Control unit for central heating systems
AssigneeVadstena Pumpar AB
InventorsLars S. Johansson, Bert S. Nordqvist
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Abstract
The invention relates to a control unit comprising two bodies, one of which is located in a main fluid-distributing section, such as a hot water heating system. A shunt valve in this main section body provides for shunting the hot water, of a boiler in the main section, between different channels which are enclosed within the two bodies. The second body section is located in a group flow-distributing section, and may be used in conjunction with a circulating pump. The two bodies are connected to each other via a mechanical heat-blocking device, made of a material having a heat conductivity figure which is lower than .lambda.=1.00 kcal/m h .degree.C. This heat-blocking device also establishes a communication for fluid flow between the channels, enclosed in the two bodies.
Claims7
A fluid flow control unit for central heating systems, said unit comprising two independent bodies, shunt valve means in one of said bodies for selectively shunting fluid in a main fluid-distributing section, circulating pump means in the other body for distributing said fluid to a group fluid-distributing section, each of said independent bodies having inlet and outlet openings for connecting flow and return pipes of the respective fluid-distributing sections thereto, channel means enclosed within each of said bodies, and means for mechanically interconnecting said two independent bodies via a mechanical heat-blocking means made of a material having a heat conductivity figure which is lower than .gamma.=1.00 kcal/m h .degree.C., said interconnection of the two bodies connecting the channels of the first body to the channels of the second body.
A fluid flow control unit for central heating systems, said unit comprising two independent bodies, shunt valve means in one of said bodies for selectively shunting fluid in a main fluid-distributing section, circulating pump means in the other body for distributing said fluid to a group fluid-distributing section, each of said independent bodies having inlet and outlet openings for connecting flow and return pipes of the respective fluid-distributing sections thereto, channel means enclosed within each of said bodies, and means comprising non-return valves in a mechanical heat-blocking means for mechanically interconnecting said two independent bodies, said mechanical heat-blocking means being made of a material having a heat conductivity figure which is lower than .lambda.=1.00 kcal/m h .degree.C., said interconnection of the two bodies connecting the channels of the first body to the channels of the second body.
Fluid flow control means comprising two independent bodies, a pair of inlet means and a pair of outlet means in said two bodies being interconnected by a fluid channel between said two independent bodies, said interconnecting channel having a heat barrier means therein, said heat barrier means comprises a pair of non-metallic, non-crystalline, one-way valves positioned in said channels, means for connecting one fluid flow distributing system to said fluid flow control means via a first of said inlets and a first of said outlets, means for connecting a second fluid flow distributing system to said fluid flow control means via a second of said inlets and a second of said outlets, said heat barrier means having a heat conductivity characteristic .lambda.=1.00 kcal/m h .degree.C. or less.
Dependencies are inferred from the claim text.