Clothes dryer using far-infrared heating and clothes-drying control method thereof

Abstract

Provided are a clothes dryer using far-infrared heating and a clothes-drying control method thereof. The 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. A control system described above simplifies a circuit, and also saves cost.

What is claimed is: 
     
         1 . A clothes dryer using far-infrared heating, comprising a clothes-drying drum, and further comprising 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; wherein 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. 
     
     
         2 . The clothes dryer using far-infrared heating according to  claim 1 , further comprising at least one second temperature sensor for detecting temperature inside the clothes-drying drum, wherein the second temperature sensor is connected with the input end of the controller. 
     
     
         3 . The clothes dryer using far-infrared heating according to  claim 2 , wherein the second temperature sensor is arranged at an air outlet of the clothes dryer. 
     
     
         4 . The clothes dryer using far-infrared heating according to  claim 1 , wherein the humidity sensor is arranged at the air outlet of the clothes dryer. 
     
     
         5 . The clothes dryer using far-infrared heating according to  claim 1 , wherein a fan is 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. 
     
     
         6 . 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 are mounted in the mounting holes for heating interior of the clothes-drying drum. 
     
     
         7 . 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 are arranged outside the hole arrays, and can heat interior of the clothes-drying drum through the hole arrays. 
     
     
         8 . A clothes-drying control method using far-infrared heating, applied to the clothes dryer using far-infrared heating according to  claim 1 , comprising following steps:
 in S 11 , 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 S 12 , comparing, by the controller, the received humidity value with a preset humidity value;   executing a step S 14  when the humidity value is greater than the preset humidity value; and   executing a step S 13  when the humidity value is less than or equal to the preset humidity value;   in S 13 , controlling a relay to be in an off state by the controller;   in S 14 , comparing, by the controller, the received temperature in the far-infrared heater with a preset upper limit temperature Tmax 1  and a preset lower limit temperature Tmin 1 ; executing the step S 13  when the temperature in the far-infrared heater is higher than the preset upper limit temperature Tmax 1 ; and executing a step S 15  when the temperature in the far-infrared heater is lower than the preset lower limit temperature Tmin 1 ; and   in S 15 , controlling the relay to be in an on state by the controller.   
     
     
         9 . A clothes-drying control method using far-infrared heating, applied to the clothes dryer using far-infrared heating according to  claim 2 , comprising following steps:
 in S 21 , 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 S 22 , comparing, by the controller, the received humidity value with a preset humidity value;   executing a step S 24  when the humidity value is greater than the preset humidity value; and   executing a step S 23  when the humidity value is less than or equal to the preset humidity value;   in S 23 , controlling a relay to be in an off state by the controller;   in S 24 , comparing, by the controller, the received temperature in the far-infrared heater with a preset upper limit temperature Tmax 1  and a preset lower limit temperature Tmin 1 , and comparing the received temperature in the clothes-drying drum with a preset upper limit temperature Tmax 2  and a preset lower limit temperature Tmin 2 ; executing the step S 23  when at least one of conditions that the temperature in the far-infrared heater is higher than the preset upper limit temperature Tmax 1 , and the temperature in the clothes-drying drum is higher than the preset upper limit temperature Tmax 2  is satisfied; and executing a step S 25  when at least one of conditions that the temperature in the far-infrared heater is lower than the preset lower limit temperature Tmin 1 , and the temperature in the clothes-drying drum is lower than the preset lower limit temperature Tmin 2  is satisfied; and   in S 25 , controlling the relay to be in an on state by the controller.