Drier control
阅读：847发布：2021-09-13
专利汇可以提供Drier control专利检索，专利查询，专利分析的服务。并且This invention is directed to a control for determining the moisture content of articles. Electrodes are positioned to be bridged by samples of articles in a treatment apparatus. In at least one embodiment, a capacitor is connected in circuit with the electrodes so that the charge thereon varies with the moisture content of the material as measured by the resistance of the material between the electrodes. A trigger circuit containing an electrical breakdown device having an effectively infinite resistance in one condition, as, for example, a neon lamp, provides a signal when the material achieves a predetermined moisture content. A switch responds to the signal for operating a control.，下面是Drier control专利的具体信息内容。
1. A moisture sensing control for use with ap-paratus for drying material and operative to control said apparatus in accordance with the moisture content of said material, said moisture sensing control comprising, an electric circuit including spaced electrodes, said electrodes arranged to be bridged by said material so that the resistance between said electrodes varies as the moisture content of the material, means connected in circuit with said electrodes for applying a DC potential across the electrodes that increases as said resistance increases, a neon lamp pulser connected in circuit with said electrodes and responsive to a predetermined potential across the electrodes to pass a pulse, a relay, and means connected in circuit with said relay and responsive to the pulse to pass a control signal to the relay for operating the relay.
2. A moisture sensing control for use with apparatus for drying material and operative to control said apparatus in accordance with moisture content of said material, said moisture sensing control comprising, an electrical circuit including a source of DC voltage connected in said circuit, spaced electrodes electrically connected in circuit with said DC voltage source and having a DC potential impressed thereon, said spaced electrodes adapted to be bridged by the material being dried so that the DC potential across said electrodes is dependent upon the moisture content of said material, a capacitance in parallel circuit relationship with said electrodes so that the charge thereon increases as the moisture content of the material between said electrodes decreases, neon lamp signal generating means connected in circuit with and responsive to a predetermined function of the charge of said capacitance for producing a signal, switch means operative in response to said signal to be switched from one operational state to another, and control means connected with and operated by the change in operational state of said switch means to effect a control function.
3. In a moisture sensing control adapted for use with an apparatus in which material of varying moisture contents is treated and in which said control is operative to indicate when the material during the treatment attains a certain moisture content based upon random samples, the combination comprising, spaced-apart electrodes connected to an electrical potential and adapted to contact the material being treated and to complete a circuit therethrough, means for presenting random portions of the material into bridging contact with said electrodes in order that the electrical resistance of representative samples of the material is shunted across said electrodes, integrating circuit means including capacitance for developing a charge which is a function of the integration over a time period of the electrical resistance of the samples of the material contacting and bridging said electrodes, trigger circuit means responsive to a predetermined function of the charge on said capacitance for producing a signal when the material has developed a certain moisture content, said trigger circuit means including in circuit with said capacitanCe electrical breakdown means having a normally effectively infinite resistance operable until said capacitance developes substantially said predetermined charge for providing effective regulation of said trigger circuit means and operable after said predetermined charge is developed on said capacitance for changing to a low resistance to produce said signal, and control circuit means responsive to said signal for providing a control function.
4. The moisture sensing control of claim 3 in which said electrical breakdown means includes a neon lamp.
5. In a moisture sensing control adapted for use with an apparatus in which material of varying moisture contents is treated and in which said control is operative to indicate when the material during the treatment attains a certain moisture content based on random samples, the combination comprising, spaced-apart electrodes connected to an electrical potential and adapted to contact the material being treated and to complete a circuit therethrough, means for presenting random portions of the material into bridging contact with said electrodes in order that the electrical resistance of representative samples of the material is shunted across said electrodes, control circuit means operable for effecting a control function upon the material attaining a certain moisture content, trigger circuit means including in circuit with said electrodes electrical breakdown means having an effectively infinite resistance in one condition and operable for providing effective regulation of said control circuit means, integrating circuit means including capacitance in circuit with said electrodes for developing a potential which is a function of the integration over a time period of the electrical resistance of the samples of the material contacting and bridging said electrodes, said electrical breakdown means being responsive to a certain function of the potential across said capacitance and operable from a first condition to a second condition at said certain moisture content for actuating said control circuit means.
6. The moisture sensing control according to claim 5 in which said electrical breakdown means comprises a neon lamp.
7. In a moisture sensing control adapted for use with an apparatus in which material of varying moisture contents is treated and in which said control is operative to indicate when the material during the treatment attains a certain moisture content based on random samples, the combination comprising, spaced-apart electrodes connected to an electrical potential and adapted to contact the material being treated and to complete a circuit therethrough, means for presenting random portions of the material for bridging contact with said electrodes in order that the electrical resistance of representative samples of the material is shunted across said electrodes, control circuit means operable for effecting a control function upon the material attaining a certain moisture content, circuit means including in circuit with said electrodes electrical breakdown means having an effectively infinite resistance in one condition and operable between first and second conditions for providing effective regulation of said control circuit means, means for developing an electrical analog which is a function of the integration of the moisture contents of the random portions of the material contacting and bridging said electrodes, said electrical breakdown means being responsive to a certain value of said electrical analog for operation from said first condition to said second condition at said certain moisture content for actuating said control circuit means.
8. The moisture sensing control of claim 7 in which said electrical breakdown means includes a diode device.
9. The moisture sensing control of claim 7 in which said electrical breakdown means includes a two element neon tube.
10. In a moisture sensing control adapted for use with an apparatus in which material of varying moisture contents is operative to indicate When the material during the treatment attains a certain moisture content based on random samples, the combination comprising, spaced-apart electrodes connected to an electrical potential and adapted to contact the material being treated and to complete a circuit therethrough, means for presenting random portions of the material for bridging contact with said electrodes in order that representative samples of the material are shunted across said electrodes, control circuit means operable from a first posture to a second posture to initiate termination of operation of said apparatus upon the material attaining a certain moisture content, circuit means including in circuit with said electrodes a signal generating diode means operable between first and second conditions for providing effective regulation of said control circuit means, means for developing an electrical analog which is a function of the integration of the moisture contents of the random portions of the material contacting and shunting said electrodes, said signal generating diode means being responsive to a certain value of said electrical analog for operation from said first condition to said second condition at said certain moisture content for actuating said control circuit means to said second posture whereby initiation of termination of operation of said apparatus is effected.
11. The moisture sensing control according to claim 10 in which said signal generating diode means comprises a neon lamp.
12. A control for determining moisture content of material, comprising, an electric circuit including a voltage divider network one part of which is provided with a known resistance and the other part of which includes spaced electrodes adapted to be bridged by a material the resistance of which varies as its moisture content varies, a capacitor in circuit with the electrodes so the charge thereon is a function of the resistance between the electrodes, a two element glow lamp connected in circuit with said capacitor and responsive to a predetermined function of the charge on the capacitor to produce a signal, normally nonconducting switching means responsive to and actuated by said signal to a conducting condition, and control means connected in circuit with said switching means and operated by the current passed by the switching means.
13. The control according to claim 12 in which said two-element glow lamp is a neon lamp.
14. A moisture sensing control for use with apparatus for drying material and operative to control said apparatus in accordance with moisture content of said material, said moisture sensing control comprising, spaced electrodes adapted to be bridged by the material being dried so that the electrical potential across said electrodes is dependent upon the moisture content of said material, means connected in circuit with and operative to apply a DC potential across said electrodes, a capacitance connected in parallel with said electrodes so that the charge thereon increases as the electrical resistance of the material between said electrodes increases, glow lamp signal generating means connected in circuit with said capacitance and operative in response to a predetermined function of the charge on said capacitance to produce an electrical signal, and control means responsive to said signal to pass current of sufficient magnitude to effect a control function.
15. The moisture sensing control according to claim 14 in which said glow lamp signal generating means comprises a neon lamp.
16. A moisture sensing control for use with apparatus for drying material and operative to control said apparatus in accordance with the moisture content of said material, said moisture sensing control comprising, sensing means arranged for engagement with the material being dried to complete a sensing circuit and the potential of said sensing means being determined by current flow through said material, means connected in circuit with and operative to apply a DC voltage to said sensing means, a capacitaNce connected in circuit with said sensing means for accumulating a charge which increases as the moisture content of said material decreases, glow lamp signal generating means connected in circuit with said capacitance and operative in response to a predetermined function of the charge on said capacitance to produce a signal, control means for said apparatus, and means connected in circuit with said control means and responsive to said signal to actuate said control means to effect a control function.
17. The moisture sensing control according to claim 16 in which said glow lamp signal generating means comprises a neon lamp.
18. In a moisture sensing system adapted for use with a material drying apparatus and operative to indicate when the material during a drying operation contains a certain moisture content based on random samples, the combination comprising, spaced-apart electrodes connected to an electrical potential and adapted to contact the material being treated for completing a circuit therethrough, means for presenting random portions of the material for bridging contact with said electrodes in order that the electrical resistance of representative samples of the material is shunted across said electrodes, control means connected to said electrodes and including electrical breakdown means having first and second electrical conditions in which one of said electrical conditions presents an effectively infinite resistance, said control means further including integration means operable for integrating the moisture contents of the random portions of the material contacting and bridging said electrodes, one of said electrical breakdown means and said integration means being responsive to a function of the electrical resistance across said electrodes for actuating the other to condition said control means for initiating termination of said drying operation, and termination means responsive to said control means for initiating termination of said drying operation at said certain moisture content.
19. The moisture sensing system according to claim 18 in which said electrical breakdown means comprises a neon lamp.
20. In a moisture sensing system as defined in claim 18 wherein said integration means includes a capacitor.
21. In a moisture sensing system as defined in claim 20 wherein said electrical breakdown means includes a glow lamp having a condition of normally effectively infinite resistance in the presence of wet material at said electrodes and operable to the other electrical condition responsive to said capacitor in the presence of material having said certain moisture content for actuating said control means to initiate termination of said drying operation.
22. In a moisture sensing system as defined in claim 18 wherein said integration means includes motor driven means.
23. In an apparatus for drying fabrics operable through a cycle of operation, a drum for containing said fabrics, means for rotating said drum to tumble said fabrics, means for drying said fabrics in said drum, electrodes for contacting and completing an electrical circuit through said tumbled fabrics, said electrodes spaced apart a fixed distance adapted to receive therebetween the fabrics being dried so that the electrical resistance between said electrodes varies with the electrical resistance condition of the fabrics therebetween, means for applying electrical voltage to said electrodes, means for instituting said cycle of operation of said apparatus, means responsive to a predetermined electrical resistance condition of said fabrics contacting said electrodes for generating a control voltage, a gaseous discharge device for producing a light when said control voltage attains a predetermined value, a light responsive device positioned to be illuminated by the light produced in said gaseous discharge device, and means controlled by said light responsive device for initiating termination of the cycle of operation.
24. In an apparatus according to claim 23 further characterized iN that said gaseous discharge device is a neon lamp.
25. A moisture sensing control for use with apparatus for treating material and operative to control said apparatus in accordance with the moisture content of said material comprising, an electric circuit including spaced electrodes adapted to engage random portions of said material and further including means for applying a potential across said electrodes, said electrodes arranged 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, 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 the electrodes to operate from a first electrical condition to a second electrical condition, said electrical breakdown means having an effectively infinite resistance in one of said first and second electrical conditions, and means responsive to operation of said electrical breakdown means to said second condition for effecting a control function.
26. The moisture sensing control according to claim 25 in which said electrical breakdown means comprises a neon lamp.
27. A moisture sensing control for use with apparatus for drying material and operative to control said apparatus in accordance with moisture content of said material, said moisture sensing control comprising, spaced electrodes adapted to be bridged by the material being dried so that the electrical potential across said electrodes is dependent upon the moisture content of said material, means connected in circuit with and operative to apply a potential across said electrodes, a capacitance connected in circuit with said electrodes so that the charge thereon varies as a function of the electrical resistance of the material between said electrodes, electrical breakdown means connected in circuit with said capacitance and operative in response to a predetermined potential across said electrical breakdown means as a function of the charge on said capacitance to generate an electrical signal, said electrical breakdown means operable between first and second electrical conditions and having an effectively infinite resistance in one of said first and second electrical conditions, and control means responsive to said signal to effect a control function.
28. The moisture sensing control according to claim 27 in which said electrical breakdown means comprises a neon lamp.
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