Heating control system of multi-drum washing machine

Abstract

A multi-drum washing machine comprises at least two sets of heating devices, and at least two detection units which are correspondingly connected with the heating devices. Each detection unit is used for detecting heating information of the corresponding heating device and controlling at least one other heating device to be turned on/off according to the heating information. The heating control system of the multi-drum washing machine solves the problem that it is difficult to detect heating devices in a multi-drum washing machine, thus increasing the calculation burden of a processor. The disclosure realizes real-time detection of the heating devices through simple detection circuit hardware connection on a circuit of each heating device. The circuits are detected by using connection structures of circuit hardware, thereby saving cost, improving the sensitivity of the detection circuits and prolonging the service life of the processor of the multi-drum washing machine.

1 . A heating control system of a multi-drum washing machine having at least two sets of heating devices, comprising,
 at least two detection units which are correspondingly connected with the heating devices, wherein one of the detection units is used for detecting heating information of one of the heating device, and, at least one other heating device is controlled to be turned on/off according to the heating information.   
     
     
         2 . The heating control system of the multi-drum washing machine according to  claim 1 , wherein a first detection unit, corresponding to a first heating device, in the control system detects heating information of the first heating device, and a second heating device is controlled to be turned on/off according to the heating information of the first heating device;
 wherein the first heating device and the second heating device are arranged in parallel.   
     
     
         3 . The heating control system of the multi-drum washing machine according to  claim 1 , wherein each heating device comprises at least one heating unit and a control unit corresponding to the heating unit, one end of the heating unit is connected with a first power supply, another end of the heating unit is connected with one end of the control unit, and another end of the control unit is connected with a second power supply;
 wherein the control unit is used for controlling the heating unit to be turned on/off.   
     
     
         4 . The heating control system of the multi-drum washing machine according to  claim 3 , wherein the detection unit is arranged in parallel with the control unit and is used for detecting electric potential information of at least one end of the control unit. 
     
     
         5 . The heating control system of the multi-drum washing machine according to  claim 3 , wherein the heating unit comprises one or more than one element selected from a group consisting of a heating pipe, a heating wire, a heating rod and an electromagnetic induction heating ring. 
     
     
         6 . The heating control system of the multi-drum washing machine according to  claim 3 , wherein the detection unit is a first detection circuit, and an input end of the first detection circuit is arranged between and connected with the heating unit and the control unit. 
     
     
         7 . The heating control system of the multi-drum washing machine according to  claim 6 , wherein a connecting relation of the first detection circuit is as follows: one end of a first resistor R is connected with the input end, another end of the first resistor R is connected with an output end and a capacitor C, and another end of the capacitor C is grounded. 
     
     
         8 . The heating control system of the multi-drum washing machine according to  claim 3 , wherein the detection unit is a second detection circuit, and the second detection circuit is connected in parallel with the control unit;
 wherein one end of the second detection circuit is arranged between the heating unit and the control unit, and another end of the second detection circuit is arranged between the control unit and the second power supply and,   the second detection circuit and the corresponding control unit form a closed loop.   
     
     
         9 . The heating control system of the multi-drum washing machine according to  claim 8 , wherein a connecting relation of the second detection circuit is as follows: the second detection circuit comprises a second resistor R 1  and a diode D,
 the resistor R 1  and the diode D are connected and form a closed loop with the control unit; 
 the second detection circuit further comprises an optical coupler OC, the optical coupler OC is reversely connected with the diode D, a C pole of the optical coupler OC is connected with a third resistor R 3  and an external power supply V+, and an E pole of the optical coupler OC is grounded. 
 
     
     
         10 . The heating control system of the multi-drum washing machine according to  claim 3 , wherein the control unit comprises a knife switch and/or a relay switch. 
     
     
         11 . The heating control system of the multi-drum washing machine according to  claim 2 , wherein each heating device comprises at least one heating unit and a control unit corresponding to the heating unit, one end of the heating unit is connected with a first power supply, another end of the heating unit is connected with one end of the control unit, and another end of the control unit is connected with a second power supply;
 wherein the control unit is used for controlling the heating unit to be turned on/off.   
     
     
         12 . The heating control system of the multi-drum washing machine according to  claim 5 , wherein the heating unit is a heating pipe. 
     
     
         13 . The heating control system of the multi-drum washing machine according to  claim 4 , wherein the heating unit comprises one or more than one element selected from a group consisting of a heating pipe, a heating wire, a heating rod and an electromagnetic induction heating ring. 
     
     
         14 . The heating control system of the multi-drum washing machine according to  claim 4 , wherein the detection unit is a first detection circuit, and an input end of the first detection circuit is arranged between and connected with the heating unit and the control unit. 
     
     
         15 . The heating control system of the multi-drum washing machine according to  claim 5 , wherein the detection unit is a first detection circuit, and an input end of the first detection circuit is arranged between and connected with the heating unit and the control unit. 
     
     
         16 . The heating control system of the multi-drum washing machine according to  claim 4 , wherein the detection unit is a second detection circuit, and the second detection circuit is connected in parallel with the control unit;
 wherein one end of the second detection circuit is arranged between the heating unit and the control unit, and another end of the second detection circuit is arranged between the control unit and the second power supply and,   the second detection circuit and the corresponding control unit form a closed loop.   
     
     
         17 . The heating control system of the multi-drum washing machine according to  claim 5 , wherein the detection unit is a second detection circuit, and the second detection circuit is connected in parallel with the control unit;
 wherein one end of the second detection circuit is arranged between the heating unit and the control unit, and another end of the second detection circuit is arranged between the control unit and the second power supply and,   the second detection circuit and the corresponding control unit form a closed loop.