TH36068A - Equipment for heating - Google Patents

Abstract

DC60 (23/02/41) equipment for heating such as microwave ovens There will be a heating compartment with an opening, a door for closing and opening of the heating compartment, at least two safety switches. Connected to the transmission line To be able to cut off both poles of that section, respectively, which each safety switch There are a number of contacts. And perform a switch operation. In response to the opening And closing of the door, the first control circuit Connected to the page Contact of the door opening and remains connected to the common contact of the safety switch, the door switch for Detects the opening and closing of the door And the second control circuit For controlling one control circuit to provide one control circuit Detect the failure of the safety switch When the door is opened Whether the safety switch At least one failure It can be determined on the conductivity and contacts of the safety switch door opening. Equipment for heating, such as a microwave oven There will be a section that is a heating channel. Open Doors for closing and opening of the heating compartment. At least two safety switches. Connected to the transmission line To be able to cut off both poles of that part respectively Each safety switch has a number of contacts. And executes a hack-switch in response to an open And the closing of the door Control circuit one That is connected to the contact of the door opening and continues to the common contact of the safety switch Door switch for detecting the opening and closing of the door. And the second control circuit For controlling one control circuit To complete the control circuit at one Detect a failure of the safety switch. When the door is opened, either at least one safety switch has failed. Can be judged on the condition of the lead And the contact of the door opening of the safety switch

Claims (1)

1. Equipment for heating Which contains the following components Heating compartment Open Doors for closing and opening openings Heating compartment At least two safety switches connected to the transmission line. To be able to cut off both poles of that section respectively Each safety switch has a number of contacts and performs a switching operation. In response to the opening and closing of the door Switch detection path For detecting the junction condition of each safety switch contact directly. Door detection pathway For detecting door opening and closing and control path for controlling switch sensing path So that the sensing path, the switch performs the detection operation When the door trajectory detects that the door has been opened, 2. Heating device. Which contains the following components Heating compartment Open Doors for closing and opening openings Of the heating channel Safety switch number At least two of them are connected to the transmission line. To be able to cut off the power on both poles of that section respectively, each safety switch has a number of contacts and performs a switching operation. In response to the opening and closing of the door Switch detection path Which is connected to the contact of the door opening And is connected to the common contact of each safety switch when the door is opened For detecting the conductivity between the contacts of the door openings. Switch detection path For detecting door opening and closing and control path for controlling switch sensing path So that the sensing path, the switch performs the detection operation When the door sensing path detects that the door has been opened, 3. A heating device according to claim 1 or 2, which the control path controls the switch sensing path. To provide a way to detect the switch Performs the detection operation for the specified interval at the beginning. When the door is opened 4. A heating device according to claim 1 or 2, in which the switch detects at least one safety switch when the switch detects abnormal conditions. The control path indicates abnormal conditions 5. Equipment for heating according to claim 1 or 2, in which at least one safety switch detects an abnormal condition of the switch. The control path prohibits the operation of heating. 6. Heating devices according to claim 1 or 2, in which at least one safety switch detects abnormal conditions of the switch. The control path indicates abnormal conditions and prohibits the operation of heating. 7. Heating equipment according to claim 2, which when the path detects a switch. Will detect resistance Between the contacts of the door opening of the safety switch And will continue to detect the first abnormal condition Which at least one safety switch interrupts the When the detectable resistance is infinite. 8. The device for heating according to claim 7, which when the path detects the switch. Will detect the second abnormal condition When the detectable resistance Is greater than that set 9. Equipment for heating claim 7, which when the path detects the switch. Will detect the third abnormal condition When the detectable resistance Is greater than the preset 1 0. Any of the heating equipment according to claim 1 to 9 Which still contains a number of loads That were provided during transmission lines And a number of relay circuits to turn on and off each load. And which the control path opens the relay circuit respectively and controls the switch sensing path. To provide a way to detect the switch Performing a detection operation To detect interruptions in each load 1 1. The heating device according to claim 10, which still consists of an operating panel with at least one keypad to operate. And which when the pushbutton is operated in a mode different from the normal mode of that segment While the door was opened The control path opens the relay circuit accordingly and controls the switch sensing path. So that the sensing path, the switch performs the detection operation To detect interruptions in each load