发明名称 |
Evaporative roof cooling system |
摘要 |
A control device for evaporative roof cooling systems in which a lack of moisture on a sample surface actuates a valve to spray water onto a roof. The lack of moisture opens the circuit between two spaced electrodes located on the sample surface, causing a control relay to activate a water spray system by supplying a voltage to one or more solenoid water valves.
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申请公布号 |
US4064706(A) |
申请公布日期 |
1977.12.27 |
申请号 |
US19770774031 |
申请日期 |
1977.03.03 |
申请人 |
STEPHENS, JR., RAYMOND E. |
发明人 |
STEPHENS, JR., RAYMOND E. |
分类号 |
F24F5/00;F25D7/00;(IPC1-7):F25D17/02 |
主分类号 |
F24F5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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