EP3184690B1 - Far-infrared heating clothes drying machine and controlling means for drying clothes thereof - Google Patents
Far-infrared heating clothes drying machine and controlling means for drying clothes thereof Download PDFInfo
- Publication number
- EP3184690B1 EP3184690B1 EP14900175.2A EP14900175A EP3184690B1 EP 3184690 B1 EP3184690 B1 EP 3184690B1 EP 14900175 A EP14900175 A EP 14900175A EP 3184690 B1 EP3184690 B1 EP 3184690B1
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- European Patent Office
- Prior art keywords
- far
- temperature
- clothes
- controller
- infrared
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/26—Heating arrangements, e.g. gas heating equipment
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/12—Temperature
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/32—Temperature
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/34—Humidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/52—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to electric heating means, e.g. temperature or voltage
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/64—Radiation, e.g. microwaves
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/28—Electric heating
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
Definitions
- the present disclosure relates to the field of clothes dryers, and in particular to a clothes dryer using far-infrared heating and a clothes-drying control method thereof.
- some clothes dryers or washing-drying integrated machines use a far-infrared heating technology to dry clothes.
- far-infrared heaters are arranged on or outside drying drums of the clothes dryers or the washing-drying integrated machines; the far-infrared heaters can emit far-infrared rays; the far-infrared rays have an energy characteristic of being absorbed by water but not absorbed by air; therefore, the far-infrared rays are radiated to interiors of the drying drums, are absorbed by water in heated objects, and are directly converted into a heat energy for converting the water in the heated objects into water vapor to be drained out.
- the existing clothes dryers or washing-drying integrated machines use the far-infrared heating technology; on and off of a group of far-infrared heaters are usually controlled by a relay arranged on a PCB (Printed Circuit Board); a temperature controller is mounted near each of the far-infrared heaters to prevent that the temperature of the far-infrared heater is too high; and a temperature sensor is arranged in the drying drum to control that the temperature inside the drum is not excessive.
- a PCB printed Circuit Board
- the far-infrared heaters are made of TCM (Tin Ceramic Membrane) materials; the TCM is a novel functional ceramic composite electric heating material, has characteristics of converting electric energy into the heat energy and then converting the heat energy into the far-infrared rays, can be made into low-temperature and middle-temperature high-efficiency far-infrared components, can produce rich long-wavelength far-infrared rays, is a pioneering and most advanced high-technology novel product.
- TCM Tin Ceramic Membrane
- the far-infrared heaters are used in the clothes dryers or washing-drying integrated machines for drying the clothes, since a power density of the far-infrared heaters is relatively low and large heating areas are required, single-piece power of the existing far-infrared heaters is 200-400 W generally, e.g., an ordinary 5 kg clothes dryer at least needs 3-6 far-infrared heaters; and if the existing heating control mode is used, one relay and one temperature controller need to be configured for each far-infrared heater, i.e., 3-6 groups of relays and temperature controllers are required, to result in complicated circuits and waste of cost.
- JP2010125258A discloses a far-infrared washing and drying machine and far-infrared washing and drying method.
- the reference numeral 5 designates a rotary drum in which washing is put.
- a number of far infrared heaters 7 are arranged in the periphery of the rotary drum 5. In the far infrared heaters, the radiation surfaces thereof directed toward the center line X of the rotary drum 5.
- a number of light transmitting holes 5a for transmitting far infrared rays are bored in the rotary drum 5. The washing (not shown in drawing) in the rotary drum 5 is dried more quickly than using hot air by irradiation of far infrared rays.
- US6025580A1 discloses a method of drying objects, which includes the steps of placing the objects into a pressure reduction tank, placing a metallic element having a single or plural number of sharp edge into the pressure reduction tank, subjecting the objects to controlled microwave heating and controlled far infrared heating either separately or simultaneously, detecting an electrical discharge at the sharp edge of the metallic element due to microwave energy, stopping or pausing the microwave heating when an electrical discharge is detected at the single or plural number of sharp edge of the metallic element, continuously measuring the change in reduced pressure at prescribed time intervals after the microwave heating has been stopped or paused upon detecting an electrical discharge due to microwave energy, and terminating the drying process when the measured change in reduced pressure reaches a predetermined target reduced pressure change value determined in accordance with the level of dryness selected and the type of the objects being dried.
- CN1626723A discloses a multimode all-intelligence controlled microwave and infrared clothes dryer device. It includes external shell, internal cavity, sealed cabinet door, transformer, magnetron, waveguide box, waveguide wheel and electric control circuit. Said electric control circuit includes a control circuit containing microprocessor. Besides, it also includes the components of infrared heating tube group, exhaustor, fan blower, temperature and humidity induction devices and relay group, etc. Said invention also provides the connection method of the above-mentioned all the components.
- an objective of the present disclosure is to provide a clothes dryer using far-infrared heating; and the clothes dryer only needs to be configured with one relay and one temperature controller to monitor all far-infrared heaters, thereby simplifying circuits and saving cost.
- Another objective of the present disclosure is to provide a clothes-drying control method using far-infrared heating; the method is applied to the above clothes dryer using far-infrared heating; and the control method is simple and easy to operate.
- Embodiments of the present disclosure adopt following technical solutions.
- the present disclosure provides a clothes dryer using far-infrared heating according to independent claim 1, a clothes-drying control method according to claim 8, and another clothes-drying control method according to claim 9. Further improvements and embodiments are provided in the dependent claims.
- a clothes dryer using far-infrared heating includes a clothes-drying drum, and further includes at least one far-infrared heater, a humidity sensor for detecting exhaust humidity of the clothes-drying drum, a relay and a controller having an output end connected with the relay; where all the far-infrared heaters are connected with a power supply through the relay; a first temperature sensor is mounted inside one of the far-infrared heaters; the first temperature sensor and the humidity sensor are connected with an input end of the controller; and the controller controls on and off of the relay according to a received temperature signal or humidity signal; the far-infrared heater is made of tin ceramic membrane materials.
- the clothes dryer using far-infrared heating further may include at least one second temperature sensor for detecting temperature inside the clothes-drying drum; and the second temperature sensor is connected with the input end of the controller.
- the second temperature sensor may be arranged at an air outlet of the clothes dryer.
- the humidity sensor may be arranged at the air outlet of the clothes dryer.
- a fan may be arranged at an air inlet of the clothes dryer; power of the fan is 10-20 W; and the fan is connected with the controller.
- Mounting holes may be arranged in the clothes-drying drum; and the far-infrared heaters are mounted in the mounting holes for heating interior of the clothes-drying drum.
- At least one group of hole arrays may be arranged on the clothes-drying drum; each group of the hole arrays is composed of a plurality of holes; and the far-infrared heaters are arranged outside the hole arrays, and can heat interior of the clothes-drying drum through the hole arrays.
- a clothes-drying control method using far-infrared heating applied to the clothes dryer using far-infrared heating according to a first item and includes the following steps:
- a clothes-drying control method using far-infrared heating applied to the clothes dryer using far-infrared heating according to a second item and includes the following steps:
- 1 Far-infrared heater; 2: Controller; 3: Relay; 4: Power supply; 5: First temperature sensor; 6: Humidity sensor; 7: Second temperature sensor; 8: Fan.
- the far-infrared heater provided by the present disclosure can be applied to a washing-drying integrated machine and can also be applied to a clothes dryer; and the clothes dryer is introduced below as an example.
- the clothes dryer includes a tank body and a far-infrared clothes-drying control system; the far-infrared clothes-drying control system includes a clothes-drying drum, which is rotatably arranged inside the tank body.
- Fig. 1 is a schematic structural diagram illustrating the far-infrared clothes-drying control system provided by device embodiments of the present disclosure. As shown in Fig.
- the far-infrared clothes-drying control system further includes at least one far-infrared heater 1, a humidity sensor 6 for detecting exhaust humidity of the clothes-drying drum, a relay 3 and a controller 2 having an output end connected with the relay 3; the controller 2 is connected with a power supply 4; all the infrared heaters 1 are connected with the power supply 4 through the relay 3; a first temperature sensor 5 is mounted inside one of the far-infrared heaters 1; the first temperature sensor 5 and the humidity sensor 6 are connected with an input end of the controller 2; and the controller 2 controls on and off of the relay 3 according to a received temperature signal or humidity signal.
- the first temperature sensor 5 detects temperature in the far-infrared heaters 1 and transmits the temperature to the controller 2 in the form of signal; meanwhile, the humidity sensor 6 detects humidity of gas discharged from the clothes-drying drum and transmits the humidity to the controller 2 in the form of signal.
- the controller 2 compares the received temperature in the far-infrared heaters with a preset upper limit temperature Tmax1 and a preset lower limit temperature Tmin1, controls the relay 3 to be turned off when the temperature in the far-infrared heaters is higher than the preset upper limit temperature Tmax1, and controls the relay 3 to be turned on when the temperature in the far-infrared heaters is lower than the preset lower limit temperature Tmin1; and meanwhile, the controller 2 compares the received humidity value with a preset humidity value, and controls the relay 3 to be turned off and terminates a drying process when the humidity value is less than the preset humidity value.
- the control system no longer adopts a mechanical temperature controller, but only one first temperature sensor 5 is mounted on one far-infrared heater 1 for detecting and controlling temperature.
- the first temperature sensor 5 is mounted inside the far-infrared heater 1; current of the far-infrared heaters 1 has a characteristic of increasing gradually; all the far-infrared heaters 1 are controlled by only one relay 3, rather than respectively controlled by a plurality of relays 3. In this way, the system can control all the far-infrared heaters 1 by using only one first temperature sensor 5 and one relay 3, to simplify circuits and also save cost.
- the far-infrared heaters 1 can be mounted on the clothes-drying drum or mounted between the clothes-drying drum and the tank body.
- the far-infrared heaters 1 are mounted on the clothes-drying drum, mounting holes are arranged in the clothes-drying drum; and the far-infrared heaters 1 are mounted in the mounting holes so as to heat interior of the clothes-drying drum.
- the far-infrared heaters 1 when the far-infrared heaters 1 are mounted between the clothes-drying drum and the tank body, at least one group of hole arrays is arranged on the clothes-drying drum; each group of the hole arrays is composed of a plurality of holes; and the far-infrared heaters 1 are arranged outside the hole arrays, and can heat interior of the clothes-drying drum through the hole arrays.
- a temperature sensor is further arranged in the clothes-drying drum; the temperature sensor is configured to detect the temperature in the clothes-drying drum and prevent clothes from being damaged due to excessively high temperature in the clothes-drying drum, which requires the whole machine to be equipped with a high-power fan, so as to make the temperature in the drum as even as possible, so that security problems may occur when an air speed is slightly lower, or an air duct is slightly blocked.
- the far-infrared heaters 1 are configured to heat clothes; the temperature of the far-infrared heaters 1 is locked, e.g., the temperature of a 200 membrane system is not higher than 200°C, and the far-infrared heaters are automatically powered off when the temperature exceeds 200°C; furthermore, the clothes are not heated by an air medium, but water of the clothes is directly heated by emitted far-infrared radiation; these two aspects ensure use security firstly, so the temperature sensor arranged in the clothes-drying drum in a traditional clothes-drying system is no longer so important, and temperature detection accuracy in the clothes-drying drum is no longer dependent on the air speed. However, for the clothes to be dried, if the clothes are made of chemical fibers, wools and other fabrics with high temperature requirements, the requirements for the temperature in the clothes-drying drum are also relatively high.
- At least one second temperature sensor 7 is further arranged on the clothes dryer; the second temperature sensor 7 is connected with the input end of the controller 2, for detecting the temperature in the clothes-drying drum and transmitting the temperature to the controller 2; the controller 2 compares the received temperature in the clothes-drying drum with a preset upper limit temperature Tmax2 and a preset lower limit temperature Tmin2, controls the relay 3 to be turned off when the temperature in the clothes-drying drum is higher than the preset upper limit temperature Tmax2, and controls the relay 3 to be turned on when the temperature inside the clothes-drying drum is lower than the preset lower limit temperature Tmin2.
- the second temperature sensor 7 is arranged at an air outlet of the clothes dryer.
- the number of the second temperature sensors 7 is at least one; when the number of the second temperature sensors 7 is plural, after all the second temperature sensors 7 transmit the detected temperatures in the clothes-drying drum to the controller 2; the controller 2 averages all the received temperatures in the clothes-drying drum, and then compares an average value with the preset upper limit temperature Tmax2 and the preset lower limit temperature Tmin2.
- a fan 8 is arranged at an air inlet of the clothes dryer; power of the fan 8 is 10-20 W; the fan 8 is connected with the controller 2; and the controller 2 controls rotation of the fan 8. Since the control system avoids dependence on air speed, the use of the high-power fan is avoided, and only one smaller fan is required for auxiliary dehumidification; and therefore, noise of such clothes dryer is low.
- hot and humid gas may be aggregated toward the air outlet at the top of the clothes dryer; and therefore, as a solution, the humidity sensor 6 is placed at the air outlet of the clothes dryer in order to more accurately measure the humidity.
- the controller 2 is made into a PCB integrated circuit board.
- the present disclosure also provides a clothes-drying control method using far-infrared heating; the clothes-drying control method is applied to a clothes dryer using far-infrared heating in which a first temperature sensor 5 and a humidity sensor 6 are arranged but the second temperature sensor 7 is not arranged;
- Fig. 2 is a flow chart illustrating a clothes-drying control method provided by method embodiments of the present disclosure; and as shown in Fig. 2 , the control method includes the following steps.
- the first temperature sensor 5 detects temperature in a far-infrared heater 1 and transmits the temperature to a controller 2 in the form of signal; meanwhile the humidity sensor 6 detects humidity of gas in a clothes-drying drum and transmits the humidity to the controller 2 in the form of signal;
- the preset upper limit temperature Tmax1 may be in a range of 190°C-210°C, but is not limited thereto and can be determined according to specific conditions; and the preset lower limit temperature Tmin1 may be in the range of 140°C-160°C, but is not limited thereto and can be determined according to specific conditions.
- the present disclosure also provides another clothes-drying control method using far-infrared heating; the control method is applied to a clothes dryer using far-infrared heating in which a first temperature sensor 5 and a humidity sensor 6 are arranged and a second temperature sensor 7 is arranged in the drum; and
- Fig. 3 is a flow chart illustrating a mode of a clothes-drying control method provided by method embodiments of the present disclosure; and as shown in Fig. 3 , the control method includes the following steps.
- the first temperature sensor 5 detects temperature in a far-infrared heater 1 and transmits the temperature to a controller 2 in the form of signal;
- the humidity sensor 6 detects humidity of gas in a clothes-drying drum and transmits the humidity to the controller 2 in the form of signal;
- the second temperature sensor 7 detects temperature in the clothes-drying drum and transmits the temperature to the controller 2 in the form of signal;
- the controller 2 compares the received humidity value with a preset humidity value; when the humidity value is greater than the preset humidity value, a step S24 is executed; and when the humidity value is less than or equal to the preset humidity value, it is indicated that clothes in the clothes-drying drum are dried, a step S23 is executed;
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Description
- The present disclosure relates to the field of clothes dryers, and in particular to a clothes dryer using far-infrared heating and a clothes-drying control method thereof.
- In the existing art, some clothes dryers or washing-drying integrated machines use a far-infrared heating technology to dry clothes. Specifically, far-infrared heaters are arranged on or outside drying drums of the clothes dryers or the washing-drying integrated machines; the far-infrared heaters can emit far-infrared rays; the far-infrared rays have an energy characteristic of being absorbed by water but not absorbed by air; therefore, the far-infrared rays are radiated to interiors of the drying drums, are absorbed by water in heated objects, and are directly converted into a heat energy for converting the water in the heated objects into water vapor to be drained out.
- However, the existing clothes dryers or washing-drying integrated machines use the far-infrared heating technology; on and off of a group of far-infrared heaters are usually controlled by a relay arranged on a PCB (Printed Circuit Board); a temperature controller is mounted near each of the far-infrared heaters to prevent that the temperature of the far-infrared heater is too high; and a temperature sensor is arranged in the drying drum to control that the temperature inside the drum is not excessive. As a result, if an existing far-infrared heating control mode is used, one relay and one temperature controller need to be configured for each far-infrared heater, and multiple groups of relays and temperature controllers need to be arranged in the entire clothes dryer or washing-drying integrated machine, to result in complicated circuits and waste of cost.
- The far-infrared heaters are made of TCM (Tin Ceramic Membrane) materials; the TCM is a novel functional ceramic composite electric heating material, has characteristics of converting electric energy into the heat energy and then converting the heat energy into the far-infrared rays, can be made into low-temperature and middle-temperature high-efficiency far-infrared components, can produce rich long-wavelength far-infrared rays, is a pioneering and most advanced high-technology novel product. When the far-infrared heaters are used in the clothes dryers or washing-drying integrated machines for drying the clothes, since a power density of the far-infrared heaters is relatively low and large heating areas are required, single-piece power of the existing far-infrared heaters is 200-400 W generally, e.g., an ordinary 5 kg clothes dryer at least needs 3-6 far-infrared heaters; and if the existing heating control mode is used, one relay and one temperature controller need to be configured for each far-infrared heater, i.e., 3-6 groups of relays and temperature controllers are required, to result in complicated circuits and waste of cost.
- Based on the above descriptions, there is an urgent need for a novel far-infrared clothes-drying control system, to solve problems of complicated circuits of the control system and waste of cost in the existing art.
- Relevant technology is also known from
JP2010125258A reference numeral 5 designates a rotary drum in which washing is put. A number of farinfrared heaters 7 are arranged in the periphery of therotary drum 5. In the far infrared heaters, the radiation surfaces thereof directed toward the center line X of therotary drum 5. A number of light transmitting holes 5a for transmitting far infrared rays are bored in therotary drum 5. The washing (not shown in drawing) in therotary drum 5 is dried more quickly than using hot air by irradiation of far infrared rays. -
US6025580A1 discloses a method of drying objects, which includes the steps of placing the objects into a pressure reduction tank, placing a metallic element having a single or plural number of sharp edge into the pressure reduction tank, subjecting the objects to controlled microwave heating and controlled far infrared heating either separately or simultaneously, detecting an electrical discharge at the sharp edge of the metallic element due to microwave energy, stopping or pausing the microwave heating when an electrical discharge is detected at the single or plural number of sharp edge of the metallic element, continuously measuring the change in reduced pressure at prescribed time intervals after the microwave heating has been stopped or paused upon detecting an electrical discharge due to microwave energy, and terminating the drying process when the measured change in reduced pressure reaches a predetermined target reduced pressure change value determined in accordance with the level of dryness selected and the type of the objects being dried. -
CN1626723A discloses a multimode all-intelligence controlled microwave and infrared clothes dryer device. It includes external shell, internal cavity, sealed cabinet door, transformer, magnetron, waveguide box, waveguide wheel and electric control circuit. Said electric control circuit includes a control circuit containing microprocessor. Besides, it also includes the components of infrared heating tube group, exhaustor, fan blower, temperature and humidity induction devices and relay group, etc. Said invention also provides the connection method of the above-mentioned all the components. - In view of this, an objective of the present disclosure is to provide a clothes dryer using far-infrared heating; and the clothes dryer only needs to be configured with one relay and one temperature controller to monitor all far-infrared heaters, thereby simplifying circuits and saving cost.
- Another objective of the present disclosure is to provide a clothes-drying control method using far-infrared heating; the method is applied to the above clothes dryer using far-infrared heating; and the control method is simple and easy to operate.
- Embodiments of the present disclosure adopt following technical solutions. The present disclosure provides a clothes dryer using far-infrared heating according to
independent claim 1, a clothes-drying control method according toclaim 8, and another clothes-drying control method according to claim 9. Further improvements and embodiments are provided in the dependent claims. - Also provided is a clothes dryer using far-infrared heating includes a clothes-drying drum, and further includes at least one far-infrared heater, a humidity sensor for detecting exhaust humidity of the clothes-drying drum, a relay and a controller having an output end connected with the relay; where all the far-infrared heaters are connected with a power supply through the relay; a first temperature sensor is mounted inside one of the far-infrared heaters; the first temperature sensor and the humidity sensor are connected with an input end of the controller; and the controller controls on and off of the relay according to a received temperature signal or humidity signal; the far-infrared heater is made of tin ceramic membrane materials.
- The clothes dryer using far-infrared heating further may include at least one second temperature sensor for detecting temperature inside the clothes-drying drum; and the second temperature sensor is connected with the input end of the controller.
- The second temperature sensor may be arranged at an air outlet of the clothes dryer.
- The humidity sensor may be arranged at the air outlet of the clothes dryer.
- A fan may be arranged at an air inlet of the clothes dryer; power of the fan is 10-20 W; and the fan is connected with the controller.
- Mounting holes may be arranged in the clothes-drying drum; and the far-infrared heaters are mounted in the mounting holes for heating interior of the clothes-drying drum.
- At least one group of hole arrays may be arranged on the clothes-drying drum; each group of the hole arrays is composed of a plurality of holes; and the far-infrared heaters are arranged outside the hole arrays, and can heat interior of the clothes-drying drum through the hole arrays.
- Also provided is a clothes-drying control method using far-infrared heating, applied to the clothes dryer using far-infrared heating according to a first item and includes the following steps:
- in S11, detecting, by a first temperature sensor, temperature in a far-infrared heater and transmitting the temperature to a controller in the form of signal; meanwhile detecting, by a humidity sensor, humidity of gas in a clothes-drying drum and transmitting the humidity to the controller in the form of signal;
- in S12, comparing, by the controller, the received humidity value with a preset humidity value; executing a step S14 when the humidity value is greater than the preset humidity value; and executing a step S13 when the humidity value is less than or equal to the preset humidity value;
- in S13, controlling a relay to be in an off state by the controller;
- in S14, comparing, by the controller, the received temperature in the far-infrared heater with a preset upper limit temperature Tmax1 and a preset lower limit temperature Tmin1; executing the step S13 when the temperature in the far-infrared heater is higher than the preset upper limit temperature Tmax1; and executing a step S15 when the temperature in the far-infrared heater is lower than the preset lower limit temperature Tmin1; and
- in S15, controlling the relay to be in an on state by the controller.
- Also provided is a clothes-drying control method using far-infrared heating, applied to the clothes dryer using far-infrared heating according to a second item and includes the following steps:
- in S21, detecting, by a first temperature sensor, temperature in a far-infrared heater and transmitting the temperature to a controller in the form of signal; detecting, by a humidity sensor, humidity of gas in a clothes-drying drum and transmitting the humidity to the controller in the form of signal; meanwhile detecting, by a second temperature sensor, the temperature in the clothes-drying drum and transmitting the temperature to the controller in the form of signal;
- in S22, comparing, by the controller, the received humidity value with a preset humidity value; executing a step S24 when the humidity value is greater than the preset humidity value; and executing a step S23 when the humidity value is less than or equal to the preset humidity value;
- in S23, controlling a relay to be in an off state by the controller;
- in S24, comparing, by the controller, the received temperature in the far-infrared heater with a preset upper limit temperature Tmax1 and a preset lower limit temperature Tmin1, and comparing the received temperature in the clothes-drying drum with a preset upper limit temperature Tmax2 and a preset lower limit temperature Tmin2; executing the step S23 when at least one of conditions that the temperature in the far-infrared heater is higher than the preset upper limit temperature Tmax1, and the temperature in the clothes-drying drum is higher than the preset upper limit temperature Tmax2 is satisfied; and executing a step S15 when at least one of conditions that the temperature in the far-infrared heater is lower than the preset lower limit temperature Tmin1, and the temperature in the clothes-drying drum is lower than the preset lower limit temperature Tmin2 is satisfied; and
- in S25, controlling the relay to be in an on state by the controller.
- The technical solutions proposed by embodiments of the present disclosure have beneficial effects that: all the far-infrared heaters are connected with the power supply through one relay, i.e., the on and off of all relays are controlled by one relay; one first temperature sensor is mounted inside one of the far-infrared heaters; the first temperature sensor and the humidity sensor for detecting the exhaust humidity of the clothes-drying drum are connected with the controller; the controller controls the on and off of the relay according to the received temperature signal or humidity signal; therefore, a control system described above simplifies circuits and saves cost.
- In order to more clearly illustrate the technical solutions in embodiments of the present disclosure, drawings which are required to be used in the descriptions of embodiments of the present disclosure are briefly introduced hereinafter. It is apparent that the drawings described below are only some embodiments of the present disclosure; for those ordinary skilled in the art, other drawings can also be obtained in accordance with contents and these drawings of embodiments of the present disclosure without paying creative efforts.
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Fig. 1 is a schematic structural diagram illustrating a far-infrared clothes-drying control system provided by device embodiments of the present disclosure; -
Fig. 2 is a flow chart illustrating a clothes-drying control method provided by method embodiments of the present disclosure; and -
Fig. 3 is a flow chart illustrating a mode of a clothes-drying control method provided by method embodiments of the present disclosure. - In the figures:
1: Far-infrared heater; 2: Controller; 3: Relay; 4: Power supply; 5: First temperature sensor; 6: Humidity sensor; 7: Second temperature sensor; 8: Fan. - In order to make solved technical problems, adopted technical solutions and achieved technical effects of the present disclosure clearer, the technical solutions of embodiments of the present disclosure are further described in detail in combination with the drawings below. Apparently, the described embodiments are merely some embodiments of the present disclosure, rather than all embodiments. All other embodiments obtained by those skilled in the art without paying creative efforts fall within a protection scope of the present disclosure, based on embodiments of the present disclosure.
- The far-infrared heater provided by the present disclosure can be applied to a washing-drying integrated machine and can also be applied to a clothes dryer; and the clothes dryer is introduced below as an example. The clothes dryer includes a tank body and a far-infrared clothes-drying control system; the far-infrared clothes-drying control system includes a clothes-drying drum, which is rotatably arranged inside the tank body.
Fig. 1 is a schematic structural diagram illustrating the far-infrared clothes-drying control system provided by device embodiments of the present disclosure. As shown inFig. 1 , the far-infrared clothes-drying control system further includes at least one far-infrared heater 1, ahumidity sensor 6 for detecting exhaust humidity of the clothes-drying drum, arelay 3 and acontroller 2 having an output end connected with therelay 3; thecontroller 2 is connected with apower supply 4; all theinfrared heaters 1 are connected with thepower supply 4 through therelay 3; afirst temperature sensor 5 is mounted inside one of the far-infrared heaters 1; thefirst temperature sensor 5 and thehumidity sensor 6 are connected with an input end of thecontroller 2; and thecontroller 2 controls on and off of therelay 3 according to a received temperature signal or humidity signal. - During operation, the
first temperature sensor 5 detects temperature in the far-infrared heaters 1 and transmits the temperature to thecontroller 2 in the form of signal; meanwhile, thehumidity sensor 6 detects humidity of gas discharged from the clothes-drying drum and transmits the humidity to thecontroller 2 in the form of signal. - The
controller 2 compares the received temperature in the far-infrared heaters with a preset upper limit temperature Tmax1 and a preset lower limit temperature Tmin1, controls therelay 3 to be turned off when the temperature in the far-infrared heaters is higher than the preset upper limit temperature Tmax1, and controls therelay 3 to be turned on when the temperature in the far-infrared heaters is lower than the preset lower limit temperature Tmin1; and meanwhile, thecontroller 2 compares the received humidity value with a preset humidity value, and controls therelay 3 to be turned off and terminates a drying process when the humidity value is less than the preset humidity value. - Since the far-
infrared heater 1 itself has a temperature limiting characteristic (temperatures are different according to different TCM systems, generally 200-400°C) and a high degree of consistency; the control system no longer adopts a mechanical temperature controller, but only onefirst temperature sensor 5 is mounted on one far-infrared heater 1 for detecting and controlling temperature. Specifically, thefirst temperature sensor 5 is mounted inside the far-infrared heater 1; current of the far-infrared heaters 1 has a characteristic of increasing gradually; all the far-infrared heaters 1 are controlled by only onerelay 3, rather than respectively controlled by a plurality ofrelays 3. In this way, the system can control all the far-infrared heaters 1 by using only onefirst temperature sensor 5 and onerelay 3, to simplify circuits and also save cost. - In the present embodiment, the far-
infrared heaters 1 can be mounted on the clothes-drying drum or mounted between the clothes-drying drum and the tank body. When the far-infrared heaters 1 are mounted on the clothes-drying drum, mounting holes are arranged in the clothes-drying drum; and the far-infrared heaters 1 are mounted in the mounting holes so as to heat interior of the clothes-drying drum. - In the present embodiment, as another solution, when the far-
infrared heaters 1 are mounted between the clothes-drying drum and the tank body, at least one group of hole arrays is arranged on the clothes-drying drum; each group of the hole arrays is composed of a plurality of holes; and the far-infrared heaters 1 are arranged outside the hole arrays, and can heat interior of the clothes-drying drum through the hole arrays. - Since normal operation temperature of the far-infrared heaters used in the clothes-drying system in the existing art is 600°C and may reach to 1000°C under abnormal conditions, control of the temperature is particularly important; besides the above-mentioned temperature detection and protection for the far-infrared heaters, a temperature sensor is further arranged in the clothes-drying drum; the temperature sensor is configured to detect the temperature in the clothes-drying drum and prevent clothes from being damaged due to excessively high temperature in the clothes-drying drum, which requires the whole machine to be equipped with a high-power fan, so as to make the temperature in the drum as even as possible, so that security problems may occur when an air speed is slightly lower, or an air duct is slightly blocked.
- In the control system, the far-
infrared heaters 1 are configured to heat clothes; the temperature of the far-infrared heaters 1 is locked, e.g., the temperature of a 200 membrane system is not higher than 200°C, and the far-infrared heaters are automatically powered off when the temperature exceeds 200°C; furthermore, the clothes are not heated by an air medium, but water of the clothes is directly heated by emitted far-infrared radiation; these two aspects ensure use security firstly, so the temperature sensor arranged in the clothes-drying drum in a traditional clothes-drying system is no longer so important, and temperature detection accuracy in the clothes-drying drum is no longer dependent on the air speed. However, for the clothes to be dried, if the clothes are made of chemical fibers, wools and other fabrics with high temperature requirements, the requirements for the temperature in the clothes-drying drum are also relatively high. - Therefore, in the present embodiment, as a solution, at least one
second temperature sensor 7 is further arranged on the clothes dryer; thesecond temperature sensor 7 is connected with the input end of thecontroller 2, for detecting the temperature in the clothes-drying drum and transmitting the temperature to thecontroller 2; thecontroller 2 compares the received temperature in the clothes-drying drum with a preset upper limit temperature Tmax2 and a preset lower limit temperature Tmin2, controls therelay 3 to be turned off when the temperature in the clothes-drying drum is higher than the preset upper limit temperature Tmax2, and controls therelay 3 to be turned on when the temperature inside the clothes-drying drum is lower than the preset lower limit temperature Tmin2. - In the present embodiment, as a solution, the
second temperature sensor 7 is arranged at an air outlet of the clothes dryer. - In the present embodiment, the number of the
second temperature sensors 7 is at least one; when the number of thesecond temperature sensors 7 is plural, after all thesecond temperature sensors 7 transmit the detected temperatures in the clothes-drying drum to thecontroller 2; thecontroller 2 averages all the received temperatures in the clothes-drying drum, and then compares an average value with the preset upper limit temperature Tmax2 and the preset lower limit temperature Tmin2. - In the present embodiment, as a solution, a
fan 8 is arranged at an air inlet of the clothes dryer; power of thefan 8 is 10-20 W; thefan 8 is connected with thecontroller 2; and thecontroller 2 controls rotation of thefan 8. Since the control system avoids dependence on air speed, the use of the high-power fan is avoided, and only one smaller fan is required for auxiliary dehumidification; and therefore, noise of such clothes dryer is low. - In the present embodiment, since a low-power fan is used in the control system, hot and humid gas may be aggregated toward the air outlet at the top of the clothes dryer; and therefore, as a solution, the
humidity sensor 6 is placed at the air outlet of the clothes dryer in order to more accurately measure the humidity. - In the present embodiment, as a solution, the
controller 2 is made into a PCB integrated circuit board. - The present disclosure also provides a clothes-drying control method using far-infrared heating; the clothes-drying control method is applied to a clothes dryer using far-infrared heating in which a
first temperature sensor 5 and ahumidity sensor 6 are arranged but thesecond temperature sensor 7 is not arranged;Fig. 2 is a flow chart illustrating a clothes-drying control method provided by method embodiments of the present disclosure; and as shown inFig. 2 , the control method includes the following steps. - In S11, after a drying process is started, the
first temperature sensor 5 detects temperature in a far-infrared heater 1 and transmits the temperature to acontroller 2 in the form of signal; meanwhile thehumidity sensor 6 detects humidity of gas in a clothes-drying drum and transmits the humidity to thecontroller 2 in the form of signal; - in S12, the
controller 2 compares a received humidity value with a preset humidity value; when the humidity value is less than or equal to the preset humidity value, it is indicated that clothes in the clothes-drying drum are dried, a step S13 is executed; and when the humidity value is greater than the preset humidity value, a step S14 is executed; - in S13, the
controller 2 judges whether therelay 3 is in an off state, and controls therelay 3 to be in the off state and terminates the entire drying process if therelay 3 is not in the off state; - in S14, the
controller 2 compares the received temperature in the far-infrared heater with a preset upper limit temperature Tmax1 and a preset lower limit temperature Tmin1; the step S13 is executed when the temperature in the far-infrared heater is higher than the preset upper limit temperature Tmax1; and a step S15 is executed when the temperature in the far-infrared heater is lower than the preset lower limit temperature Tmin1; and thecontroller 2 makes no response when the temperature in the far-infrared heater is lower than or equal to the preset upper limit temperature Tmax1 and higher than or equal to the preset upper limit temperature Tmax1; and - in S15, the
controller 2 judges whether therelay 3 is in an on state; and if therelay 3 is not turned on, thecontroller 2 controls therelay 3 to be turned on, and the far-infrared heater 1 re-emits infrared rays. - In the present embodiment, the preset upper limit temperature Tmax1 may be in a range of 190°C-210°C, but is not limited thereto and can be determined according to specific conditions; and the preset lower limit temperature Tmin1 may be in the range of 140°C-160°C, but is not limited thereto and can be determined according to specific conditions.
- The present disclosure also provides another clothes-drying control method using far-infrared heating; the control method is applied to a clothes dryer using far-infrared heating in which a
first temperature sensor 5 and ahumidity sensor 6 are arranged and asecond temperature sensor 7 is arranged in the drum; andFig. 3 is a flow chart illustrating a mode of a clothes-drying control method provided by method embodiments of the present disclosure; and as shown inFig. 3 , the control method includes the following steps. - In S21, after a drying process is started, the
first temperature sensor 5 detects temperature in a far-infrared heater 1 and transmits the temperature to acontroller 2 in the form of signal; thehumidity sensor 6 detects humidity of gas in a clothes-drying drum and transmits the humidity to thecontroller 2 in the form of signal; meanwhile thesecond temperature sensor 7 detects temperature in the clothes-drying drum and transmits the temperature to thecontroller 2 in the form of signal; - in S22, the
controller 2 compares the received humidity value with a preset humidity value; when the humidity value is greater than the preset humidity value, a step S24 is executed; and when the humidity value is less than or equal to the preset humidity value, it is indicated that clothes in the clothes-drying drum are dried, a step S23 is executed; - in S23, the
controller 2 judges whether therelay 3 is in an off state, and controls therelay 3 to be in the off state and terminates the entire drying process if therelay 3 is not in the off state; - in S24, the
controller 2 compares the received temperature in the far-infrared heater with a preset upper limit temperature Tmax1 and a preset lower limit temperature Tmin1, and compares the received temperature in the clothes-drying drum with a preset upper limit temperature Tmax2 and a preset lower limit temperature Tmin2; when at least one of conditions that the temperature in the far-infrared heater is higher than the preset upper limit temperature Tmax1 and the temperature in the clothes-drying drum is higher than the preset upper limit temperature Tmax2 is satisfied, it is indicated that the temperature in the clothes-drying drum and/or the temperature in the far-infrared heater 1 is too high, the step S23 is executed to prevent clothes and/or the far-infrared heater 1 from being burnt out; when at least one of conditions that the temperature in the far-infrared heater is lower than the preset lower limit temperature Tmin1 and the temperature in the clothes-drying drum is lower than the preset lower limit temperature Tmin2 is satisfied, it is indicated that the temperature in the clothes-drying drum and/or the temperature in the far-infrared heater 1 is too low, the step S25 is executed; or else, thecontroller 2 makes no response. - in S25, the
controller 2 judges whether therelay 3 is in an on state; and if therelay 3 is not in the on state, thecontroller 2 controls therelay 3 to be turned on, and the far-infrared heater 1 re-emits infrared rays to continue to heat the clothes in the clothes-drying drum.
Claims (9)
- A clothes dryer using far-infrared heating, comprising a clothes-drying drum, and further comprising far-infrared heaters (1), a humidity sensor (6) for detecting exhaust humidity of the clothes-drying drum, characterized by a relay (3) and a controller (2) having an output end connected with the relay (3); wherein all the far-infrared heaters (1) are connected with a power supply (4) through the relay (3); a first temperature sensor (5) is mounted inside one of the far-infrared heaters (1); the first temperature sensor (5) and the humidity sensor (6) are connected with an input end of the controller (2); and the controller (2) controls on and off of the relay (3) according to a received temperature signal or humidity signal; the far-infrared heaters (1) are made of tin ceramic membrane materials.
- The clothes dryer using far-infrared heating according to claim 1, further comprising at least one second temperature sensor (7) for detecting temperature inside the clothes-drying drum, wherein the second temperature sensor (7) is connected with the input end of the controller (2).
- The clothes dryer using far-infrared heating according to claim 2, wherein the second temperature sensor (7) is arranged at an air outlet of the clothes dryer.
- The clothes dryer using far-infrared heating according to claim 1, wherein the humidity sensor (6) is arranged at the air outlet of the clothes dryer.
- The clothes dryer using far-infrared heating according to claim 1, wherein a fan (8) is arranged at an air inlet of the clothes dryer; power of the fan (8) is 10-20 W; and the fan (8) is connected with the controller (2).
- The clothes dryer using far-infrared heating according to claim 1, wherein mounting holes are arranged in the clothes-drying drum; and the far-infrared heaters (1) are mounted in the mounting holes for heating interior of the clothes-drying drum.
- The clothes dryer using far-infrared heating according to claim 1, wherein at least one group of hole arrays are arranged on the clothes-drying drum; each group of the hole arrays is composed of a plurality of holes; and the far-infrared heaters (1) are arranged outside the hole arrays, and can heat interior of the clothes-drying drum through the hole arrays.
- A clothes-drying control method using far-infrared heating, characterized in that applied to the clothes dryer using far-infrared heating according to claim 1, comprising following steps:in S11, detecting, by a first temperature sensor (5), temperature in a far-infrared heater (1) and transmitting the temperature to a controller (2) in the form of signal; meanwhile detecting, by a humidity sensor (6), humidity of gas in a clothes-drying drum and transmitting the humidity to the controller (2) in the form of signal;in S12, comparing, by the controller (2), the received humidity value with a preset humidity value; executing a step S14 when the humidity value is greater than the preset humidity value; and executing a step S13 when the humidity value is less than or equal to the preset humidity value;in S13, controlling a relay (3) to be in an off state by the controller (2);in S14, comparing, by the controller (2), the received temperature in the far-infrared heater (1) with a preset upper limit temperature Tmax1 and a preset lower limit temperature Tmin1; executing the step S13 when the temperature in the far-infrared heater (1) is higher than the preset upper limit temperature Tmax1; and executing a step S15 when the temperature in the far-infrared heater (1) is lower than the preset lower limit temperature Tmin1; andin S15, controlling the relay (3) to be in an on state by the controller (2).
- A clothes-drying control method using far-infrared heating, characterized in that applied to the clothes dryer using far-infrared heating according to claim 2, comprising following steps:in S21, detecting, by a first temperature sensor (5), temperature in a far-infrared heater (1) and transmitting the temperature to a controller (2) in the form of signal; detecting, by a humidity sensor (6), humidity of gas in a clothes-drying drum and transmitting the humidity to the controller (2) in the form of signal; meanwhile detecting, by a second temperature sensor (7), the temperature in the clothes-drying drum and transmitting the temperature to the controller (2) in the form of signal;in S22, comparing, by the controller (2), the received humidity value with a preset humidity value; executing a step S24 when the humidity value is greater than the preset humidity value; and executing a step S23 when the humidity value is less than or equal to the preset humidity value;in S23, controlling a relay (3) to be in an off state by the controller (2);in S24, comparing, by the controller (2), the received temperature in the far-infrared heater (1) with a preset upper limit temperature Tmax1 and a preset lower limit temperature Tmin1, and comparing the received temperature in the clothes-drying drum with a preset upper limit temperature Tmax2 and a preset lower limit temperature Tmin2; executing the step S23 when at least one of conditions that the temperature in the far-infrared heater (1) is higher than the preset upper limit temperature Tmax1, and the temperature in the clothes-drying drum is higher than the preset upper limit temperature Tmax2 is satisfied; and executing a step S25 when at least one of conditions that the temperature in the far-infrared heater (1) is lower than the preset lower limit temperature Tmin1, and the temperature in the clothes-drying drum is lower than the preset lower limit temperature Tmin2 is satisfied; andin S25, controlling the relay (3) to be in an on state by the controller (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201410408773.3A CN105350272B (en) | 2014-08-19 | 2014-08-19 | A kind of dryer and its drying control method using Far-infrared Heating |
PCT/CN2014/091312 WO2016026227A1 (en) | 2014-08-19 | 2014-11-17 | Far-infrared heating clothes drying machine and controlling means for drying clothes thereof |
Publications (3)
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EP3184690A1 EP3184690A1 (en) | 2017-06-28 |
EP3184690A4 EP3184690A4 (en) | 2018-03-14 |
EP3184690B1 true EP3184690B1 (en) | 2019-03-27 |
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EP14900175.2A Not-in-force EP3184690B1 (en) | 2014-08-19 | 2014-11-17 | Far-infrared heating clothes drying machine and controlling means for drying clothes thereof |
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US (1) | US20170241067A1 (en) |
EP (1) | EP3184690B1 (en) |
JP (1) | JP2017525480A (en) |
KR (1) | KR20170042767A (en) |
CN (1) | CN105350272B (en) |
WO (1) | WO2016026227A1 (en) |
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CN105671917B (en) * | 2016-03-21 | 2021-07-20 | 无锡小天鹅电器有限公司 | Control method and device of clothes dryer |
CN108004733B (en) * | 2016-10-31 | 2020-04-17 | 众智光电科技股份有限公司 | Clothes dryer |
CN106841302B (en) * | 2016-12-29 | 2020-04-10 | 无锡小天鹅电器有限公司 | Clothes drying equipment and clothes drying humidity judging method and device for same |
CN107829277A (en) * | 2017-11-01 | 2018-03-23 | 广东万和新电气股份有限公司 | PTC heats dryer and its control method |
CN109355881B (en) * | 2017-12-19 | 2021-08-24 | 深圳Tcl新技术有限公司 | Open clothes airing device and automatic clothes drying method thereof |
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Also Published As
Publication number | Publication date |
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KR20170042767A (en) | 2017-04-19 |
EP3184690A4 (en) | 2018-03-14 |
CN105350272B (en) | 2019-11-05 |
CN105350272A (en) | 2016-02-24 |
US20170241067A1 (en) | 2017-08-24 |
EP3184690A1 (en) | 2017-06-28 |
JP2017525480A (en) | 2017-09-07 |
WO2016026227A1 (en) | 2016-02-25 |
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