Clothes drier having moisture sensing control
阅读：359发布：2021-09-06
专利汇可以提供Clothes drier having moisture sensing control专利检索，专利查询，专利分析的服务。并且A control for a drying apparatus uses an electrical breakdown device, for example, a neon bulb, to generate a signal that actuates a relay when the articles sensed by electrodes attain a predetermined moisture content as determined by their electrical resistance. A timer motor is energized upon actuation of the relay to control the drying apparatus in one embodiment.，下面是Clothes drier having moisture sensing control专利的具体信息内容。
1. In a drying machine operable through a cycle including a drying operation, a moisture sensing control operable for controlling said drying machine in accordance with the moisture content of the material dried therein comprising, means including spaced electrodes adapted to engage random portions of said material and further including means for applying a potential across said electrodes, said electrodes ranged to be bridged by said material so that the potential between said electrodes varies as a function of the moisture content of the material bridging the electrodes, circuit means including electrical breakdown means connected in circuit with said electrodes and responsive to a predetermined potential across said electrical breakdown means which is a function of the potential across said electrodes to operate from a first electrical condition to a second electrical condition, and means including an inductive coil in series with said electrical breakdown means for controlling termination of the drying operation.
2. In a drying machine operable through a cycle having a drying operation and a termination operation, the combination of a chamber for articles to be dried, heating means for drying said articles in said chamber during said drying operation, electrodes for contacting and completing an electrical circuit through said articles, said electrodes being spaced apart and adapted to receive therebetween said articles being dried so that the electrical resistance between said electrodes varies with the electrical resistance condition of the articles thErebetween, motive means in association with said chamber for causing relative movements and random contact between said electrodes and said articles to obtain representative sampling of the electrical resistance condition of the articles, means including electrical charging circuit means and discharging circuit means communicating with said charging circuit means for discharge of said charging circuit means, said discharging circuit means including electrical breakdown means having a normally effectively infinite resistance and through which a predetermined charge is discharged, said charging circuit means providing a time delay in the accumulation of said predetermined charge which is a function of the electrical resistance between said electrodes, and means including an inductive coil in series with said electrical breakdown means for controlling termination of the drying operation and initiation of the termination operation.
3. In a drying machine operable through a cycle having a drying operation and a termination operation and having manually operable means to initiate said drying operation, the combination of a chamber for articles to be dried, heating means for drying said articles in said chamber during said drying operation, electrodes for contacting and completing an electrical circuit through said articles, said electrodes being spaced apart and adapted to receive therebetween said articles being dried so that the electrical resistance between said electrodes varies with the electrical resistance condition of the articles therebetween, motive means in association with said chamber for causing relative movements and random contact between said electrodes and said articles to obtain representative sampling of the electrical resistance condition of the articles, means including electrical charging circuit means and discharging circuit means communicating with said charging circuit means for discharge of said charging circuit means, said discharging circuit means including electrical breakdown means having a normally effectively infinite resistance and through which a predetermined charge is discharged, said charging circuit means providing a time delay in the accumulation of said predetermined charge which is a function of the electrical resistance between said electrodes, and means including an inductive coil in series with said electrical breakdown means for controlling said manually operable means to effect termination of the drying operation and initiation of the termination operation.
4. In a drying machine as defined in claim 3 and further including means operable after said charge is discharged through said electrical discharging circuit means for effecting a termination operation to reduce the temperature within said chamber and to terminate said cycle.
5. In a drying machine as defined in claim 3 wherein said last named means includes a switch member operated by said inductive coil and further includes means for terminating said drying operation and wherein said switch member is operable for actuating said means for terminating the drying operation upon discharge of said predetermined charge through said electrical discharging circuit means.
6. In a drying machine as defined in claim 5 wherein said switch member is in the form of a reed switch and said means for terminating the drying operation includes a solenoid energizable for a short period of time.
7. In a drying machine operable through a cycle including one of a plurality of selectable drying operations and a termination operation, the combination of a chamber for articles to be dried, means manually operable from a first condition to a second condition for selecting and initiating one of said drying operations, heating means for drying said articles in said chamber during said drying operation, electrodes for contacting and completing an electrical circuit through said articles, said electrodes being spaced apart a fixed distance and adapted to receive therebetween said articles being dried So that the electrical resistance between said electrodes varies with the electrical resistance condition of the articles therebetween, motive means in association with said chamber for causing relative movement and random contact between said electrodes and said articles to obtain representative sampling of the electrical resistance condition of the articles, means including an electrical charging circuit means and discharging circuit means communicating with said charging circuit means for discharge of said charging circuit means, said discharging circuit means including electrical breakdown means having a normally effectively infinite resistance and through which a predetermined charge is discharged, said charging circuit means providing a time delay in the accumulation of said predetermined charge which is a function of the electrical resistance between said electrodes, and control means for actuating said manually operable means to said first condition for ending the selected drying operation and initiating the termination operation when said predetermined charge is discharged through said electrical discharge circuit means, said control means including a relay coil in series circuit with said electrical breakdown means.
8. In a drying machine operable through a cycle including one of a plurality of selectable drying operations and a termination operation as defined in claim 7 and further including means responsive to a predetermined temperature within said chamber for ending said termination operation to thereby terminate said cycle.
9. In a drying machine operable through a cycle including one of a plurality of selectable drying operations and a termination operation as defined in claim 7 wherein said control means further includes a reed switch responsive to energization of said relay coil.
10. In a drying machine operable through a cycle including one of a plurality of selectable drying operations and a termination operation as defined in claim 7 wherein said control means includes solenoid means mechanically linked to said manually operable means and energizable for mechanically actuating said manually operable means to said first condition when said predetermined charge is discharged through said electrical discharging circuit means.
11. In a drying machine operable through a cycle including one of a plurality of selectable drying operations and a termination operation as defined in claim 10 wherein said control means further includes reed switch means responsive to energization of said relay coil for energizing said solenoid means for a short period of time of sufficient duration to actuate said manually operable means to said first condition.
12. A clothes drier having a moisture sensing control for controlling said clothes drier in accordance with the moisture content of the material in the clothes being dried, the combination comprising, drum means for tumbling the clothes as they are dried, heating means for drying the clothes in said drum means, spaced electrodes arranged in said drum means to be bridged by said clothes as they are tumbled so that the resistance between said electrodes varies as the moisture content of the clothes bridging said electrodes, means connected in circuit with said electrodes for applying a DC potential across the electrodes that increases as said resistance of the material increases, a neon bulb breakdown device connected in circuit with said electrodes and responsive to a predetermined potential across the electrodes to produce a signal, solenoid means connected in circuit with said neon bulb breakdown device and responsive to said signal for operation from a first condition to a second condition, and switch means operated by said solenoid means to perform a control function in said clothes drier.
13. The clothes drier of claim 12 which further includes timer means for controlling said clothes drier, said timer means controlled by said switch means.
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