GB2546071A

GB2546071A - Hot-water heating system

Info

Publication number: GB2546071A
Application number: GB1600140.6A
Authority: GB
Inventors: Hughes Glyn
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-05
Filing date: 2016-01-05
Publication date: 2017-07-12
Anticipated expiration: 2036-01-05
Also published as: GB2546071B; GB201600140D0

Abstract

A hot water tank heating system combines a boiler with an open vented circulating system. A pressurised boiler 1 which heats a water-filled chamber 8 by way of a heat exchanger 6. The top of the chamber is extended upwards to form an open cistern 11. The chamber is connected to a circuit of space heat emitters 14 with a circulating pump 20 activated by a temperature sensors 19. The water chamber is also connected to a solid fuel boiler 17, with a temperature sensor 21 and a pump 22. When the solid fuel boiler is alight, the rise in temperature activates the pump, forcing heated water into the chamber, providing another source of heat to the water chamber.

Description

TITLE: Hot-Water Heating System INVENTOR:

Glyn Hughes, Denver House, Main Street, Winster, Derbyshire DE4 2DH, a citizen of the United Kingdom. BACKGROUND:

Heating of rooms by hot water radiators supplied by a central 'boiler' is used in many countries, especially in Northern Europe. If it is desired to operate a wood-burning boiler in conjunction with a gas or oil boiler to supply heat to a common circuit of'radiators' a problem arises in that it is common practice for the circuit and its gas or oil boiler to be sealed from the outside air and to operate at above atmospheric pressure, whereas a solid-fuel boiler, such as a wood-burning boiler, may be at risk of actually boiling and so must operate open to the atmosphere (to allow the release of steam).

The present invention reveals novel form of hot-water heating system whereby this problem can easily be overcome and a renewable-fuel boiler can be incorporated into, and supplement, a heating system where a sealed-system boiler is the principal source of heat.

PRIOR ART GB2113364A Hot Water Installation John Baker. CA2911300 Heating Installation Hans-Goran Goransson RO130526 Fluid Heating System Marinescu Florin et.al. US2015338129 Water Heating Apparatus Matsuzawa Koj i DISCLOSURE:

The present invention is now described with reference to the accompanying schematic diagram of a hot-water heating system.

Item (1) is a 'combination ('combi') boiler', typically fired by oil or gas, consisting of single casing containing burners, control devices, and including a system whereby at (2) fresh mains water is delivered in and heated to supply (3) hot water out to taps and, separately a body of permanently-circulated water in a sealed system is heated and (4) pump delivers that water out through a pipe (5) to a heat exchanger (6) from where it is returned to the boiler by a second pipe (7) for re-heating. (8) is a water chamber a part of the upper surface (9) of which is extended as a pipe (10) opening out as an open water cistern (11). The chamber (8) is provided with a number of opening ports (12) disposed in groups at upper and at lower parts of the chamber. From a high-level ports a pipe (13) is connected as a flow pipe to a circuit of (14) heat emitters such as radiators from which the water returns by a (15) pipe to the chamber (8). Another high port is connected to the flow pipe (16) from a solid fuel boiler (17) and a low port to a return pipe (18) to the solid fuel boiler.

The operation of the invention is that when the combi boiler operates to send heated water for space heating by its internal pump (4) instead of passing directly to heat emitters, as would be usual, the water instead passes through pipe (5) and through heat exchanger (6) thereby indirectly heating the water in chamber (8) without mixing with it. In the chamber (8) hotter water will naturally rise to the upper part, and cooler water sink to the lower part. The increased temperature near the top of the chamber (8) activates a sensor (19) which in turn activates a pump (20) circulating heated water to the space heat emitters (14). If the solid fuel boiler (17) is alight its temperature is sensed by the sensor (21) activating the circulating pump (22) to circulate heated water from the solid fuel boiler to the chamber (8) and from there, if hot enough, to the space heating emitters (14).

By this means a sealed-circuit boiler is able, through the heat exchanger, to heat an open-vented circulating system. A solid-fuel boiler can be connected to that circuit and the chamber (8) act as a 'neutral point manifold' so that hotter and cooler waters are separated, and, being open to the atmosphere prevent pressure from one port impinging on another port. Should boiling occur, steam is released along the pipe (10) and through the cistern water (11) to be safely vented to the atmosphere.

Claims

CLAIMS:

1. A hot-water heating system consists of a water boiler from which a circulating pump delivers heated water out through a pipe to a heat exchanger and from which heat exchanger it is returned to the boiler by a second pipe forming an enclosed system, and which heat exchanger is immersed in the separate body of water contained by a heat-exchange chamber which chamber is so constructed that a part of its upper surface is extended, as a pipe, upward and opening into a water cistern which is open to the atmosphere, and which heat-exchange chamber has ports located at its upper and at its lower part, a pipe extending from one upper port as a flow pipe to a circuit of heat emitters from which the hot water returns by a pipe to a port in the lower part of the heat-exchange chamber, which heat-emitter circuit is provided with a circulating pump which is activated in response to a rise in the temperature of the upper part of the heat-exchanger chamber, a pipe extends from one upper port as a flow pipe to a solid fuel boiler from which the hot water returns by a pipe to port in the lower part of the heat-exchange chamber, which solid fuel boiler circuit is provided with a circulating pump which is activated in response to a rise in the temperature of the solid fuel boiler.

2. A hot-water heating system as described here, where circuits additional to the single heat-emitter circuit and single solid-fuel boiler circuit are connected to the heat-exchange chamber.

3. A hot-water heating system substantially as described herein with reference to the drawings.