专利名称：Apparatus for control of differential
pressure in a heating and cooling system
发明人：Anders Engelbrektsson申请号：US10502689申请日：20030107
公开号：US20050163638A1公开日：20050728
专利附图：
摘要：The invention relates to an apparatus () for controlling the pressure differencein a heating or cooling system, which comprises a heating or a cooling source () and a feedduct () as well as a return duct (), connected to the source, and consumption devices ()
disposed between the ducts, which emit or receive heat, at least one valve or the like (andand respectively) being used to control the flow through such a loop, and a pressuredifference regulator () being used to keep the pressure difference between the feedduct and the return duct constant. According to the invention, the pressure differenceregulator () is optionally mounted in one of the ducts (or ) and is provided with signalingterminals (and and and respectively) connected to the inlet () and the outlet (),respectively, as well as to the low pressure regulating side () and the high pressureregulating side (), respectively. At least one valve or the like (and respectively), mountedin the other duct (and respectively) in relation to the duct (and respectively) of thepressure difference regulator, is provided with signaling terminals (and respectively),connected to its inlet (and respectively) and outlet (and respectively). The pressuredifference regulator is controlled via optional signaling ducts (and and and and andrespectively) between the terminals.
申请人：Anders Engelbrektsson
地址：Herrljunga SE
国籍：SE
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