Hydronic heating with continuous circulation

• US 6,299,071 B1
• Filed: 06/19/1999
• Issued: 10/09/2001
• Est. Priority Date: 06/19/1999
• Status: Expired due to Fees

• Current Assignee: Stadler Viega LLC (Viega Franz Viegener II GmbH & Co KG)
• Original Assignee: Stadler Viega LLC (Viega Franz Viegener II GmbH & Co KG)
• Inventors: Fiedrich, Joachim
• Primary Examiner(s): Joyce, Harold
• Assistant Examiner(s): Boles, Derek S.
• Application Number:
  US09/336,538
• Time in Patent Office: 843 Days
• Field of Search: 237/8.R, 237/63, 237/56
• US Class Current: 237/8.00R
• CPC Class Codes: F24D 19/1015 using a valve or valves
• CPC Class Codes: G05D 23/023 the sensing element being placed outside a regulating fluid flow

Abstract

In a hydronic heating system having a boiler hot supply water line and boiler return water line, a main hot supply water circulation loop from the boiler supply water line to the boiler return water line and one or more satellite stations in series along the main loop, for a satellite station: a satellite injection water connection and a satellite return water connection along the main loop; a satellite distribution station including one or more satellite heating loops; a satellite supply header and satellite return header at opposite ends of the satellite heating loops; a satellite station pump having an input and an output for pumping satellite water from the satellite return header to the satellite supply header so that satellite water flows through the satellite heating loop(s); a satellite injection water line from the satellite injection connection to the satellite pump input; a satellite return water line from the satellite pump output to the satellite return connection along the main loop; and a thermostatic temperature controller valve that modulates flow through the satellite return water line to the main loop to control satellite water temperature, the valve having a valve body that is immersed in said satellite water and a thermostatic actuator connected thereto providing a thermal path from the valve body to the actuator so that the thermal response of said actuator is determined by heat conducted thereto over said path.

Claims

1. A hydronic heating system having a boiler providing hot supply water and a reservoir of cooler return water, a boiler supply water line and a boiler return water line to said boiler reservoir, comprising,

(a) a main loop fed boiler supply water by said boiler supply line, a main water pump compelling water flow through said main loop from said boiler supply line to said boiler return water line,

(b) a satellite distribution station feeding one or more satellite station heating loops,

(c) a satellite injection water connection along said main loop and a satellite return water connection along said main loop,

(d) said satellite distribution station including a satellite heating loop supply header and satellite heating loop return header at opposite ends of said satellite loop and a satellite station pump pumping satellite water from said satellite return header to said satellite supply header,

(e) a water temperature control valve body for modulating water flow through the satellite return water line to the main loop to control satellite water temperature constant,

(f) said control valve body is immersed in said satellite water and

(g) a thermostatic actuator attached to said valve for controlling the position of said valve in response to the satellite water temperature,

(h) said control valve body has a seat, a moveable plug and a plug stem and

(i) said thermostatic actuator positions said valve in response to heat flow from said valve plug, through said stem to said actuator,

(j) whereby said valve controls heat flow from said main loop to said satellite loop.

2. A hydronic heating system as in claim 1 wherein,

(a) said satellite injection water connection along said main loop, said satellite return water connection along said main loop, said satellite station pump, said satellite injection water line from said satellite injection connection along said main loop to said satellite pump input and said satellite return water line from said satellite pump output to said satellite return connection along said main loop are provided as a modular unit that is interchangeable between satellite stations.

3. A hydronic heating system as in claim 1 wherein,

(a) an isolation valve for a satellite is provided along said main loop between said satellite injection water connection along said main loop and said satellite return water connection along said main loop.

4. A hydronic heating system as in claim 3 wherein,

(a) said isolation valve for a satellite is part of said satellite station modular unit.

5. A hydronic heating system as in claim 4 in a premises having a boiler room and other rooms that are heated by said satellite station heating loops, wherein,

(a) said boiler and main loop are located in said boiler room and said satellite heating loops have parts thereof that are in said other rooms.