GB2194332A

GB2194332A - Combustible-gas fed storage system for the production of hot water for household use

Info

Publication number: GB2194332A
Application number: GB08718565A
Authority: GB
Inventors: Giovanni Pieroni; Roberto Bartolozzi
Original assignee: Nuovopignone Industrie Meccaniche e Fonderia SpA; Nuovo Pignone SpA
Current assignee: Nuovo Pignone Holding SpA; Nuovo Pignone SpA
Priority date: 1986-08-06
Filing date: 1987-08-05
Publication date: 1988-03-02
Anticipated expiration: 2007-08-05
Also published as: GB8718565D0; ES2008732A6; FR2602578B1; CA1317513C; LU86964A1; IT8621420A1; IT1198018B; IT8621420A0; DE3726167A1; FR2602578A1; BE1001161A3; NL8701841A; ATA198387A; AT399569B; GB2194332B

Description

GB2194332A 1 SPECIFICATION hence the need arises for a large delivery

head, whilst the flowrate is generally small.

Combustible-gas fed storage system for the Now then, according to the present inven- production of hot water for household use tion the forced draught is achieved by means 70 of a toroidal-chamber regenerative compres The present invention relates to a combusti- sor, which makes it possible to have a large ble-gas fed storage system for the production delivery head, with small flowrates, and the of hot water which can be advantageously combust - ion air is sucked from the outside used as a gas water heater also in the bath- through a small-diameter pipe, inside which rooms wherein the possibility does not exixt 75 another small-diameter pipe is coaxially pro of installing the hood for the flue gas exhaust. vided, through which the exhaust gases are It is known that the present trend is that of expelled, which thus pre- heat said combustion replacing the electrical power with a cheaper air, with a consequent increase in system effi energy source. This need is felt, above all, in ciency.

the field of the water heaters, wherein the 80 Then, according to a variant of the inven- economical saving attained by heating water tion, the combustion air is sucked from the by feeding the water heater with combustible same room inside which the system is in gas rather than with electrical power results stalled, rather than from the outside, and con considerable. sequently only one small diameter pipe is Unfortunately, for the purpose of accom- 85 needed, for conveying the flue gases to the plishing the above, the installation has to be outside.

provided of a gas-fed water heating boiler, The invention is now better clarified by re- which above all requires, as known, the possi- ferring to the hereto attached drawing, which bility of exhausting the flue gases. shows a preferred form of practical embodi- In the modems bathrooms, or anyway in the 90 ment of the invention, supplied to purely ex- rooms wherein the installation of a gas-fed emplifying and non-limitative purposes, in that boiler is presently foreseen, an exhaust hood technical, technological and structural variants is generally provided, and that makes it easy may be always supplied without departing, to produce hot water by using a combustible from the scope of the present invention.

gas. 95 In said drawing, the figure shows, in a par- But in most bathrooms, i.e., in those of not tial and schematic perspective view, a corn- recent buildings, an exhaust hood is not pro- bustible-gas fed storage system for the pro vided, and therefore the installation of a gasduction of hot water according to the inven fed appliance for the storage of hot water tion, installed inside a room lacking an exhaust would require the use of large-diameter pipes 100 hood.

for conveying to the outside the flue gases, Referring to the figure, with 1 a generic and, consequently, the creation of holes hood-less bathroom is shown, to whose wall through walls, which are generally main walls, 2, generally different from the main wall 3 said holes being hence not easy to be made, provided with window 4, there is fastened, by or even forbidden. 105 means of support brackets not shown in The purpose of the present invention is figure, a gas-fed water heating boiler 5, for namely to overcome the above-said heating the water contained inside the storage drawbacks and to prpvide hence a gas-fed tank 6 of the same boiler. The combustion air storage system for the production of hot is supplied to the burner 7 of the boiler by a water for household use which can be rapidly 110 toroidal-chamber regenerative compressor 8, and easily installed in any rooms, even if lack- which intakes it from the outside through the ing exhaust hood. small-diameter pipe 9 and the inner small-dia- That purpose is substantially achieved by meter pipe 10. Coaxially with the small-diarendering forced the circulation of the inflow meter pipe 9 there is then another small-dia of the combustion aiC and of the outflow of 115 meter pipe 11 which too leads to the outside the flue gases. of the room 1, and is tightly connected with But this forced draught, which makes it pos- the flue gas exhaust duct 12, said flue gases sible to use small-diameter pipes for the deliv- being hence exhausted to the outside accord ery of air and of the flue gases, with the ing to the direction of arrow 13, i.e., counter consequent need for -a -hole of small diameter 120 currently to the flow direction 14 of the com only to the provided through the wall, cannot bustion air, which is hence thereby preheated.

be accomplished by means of a normal fan, The above said duct 12 runs axially through which has generally cj small delivery head and the said storage tank 6, so that the hot flue a large flowrate, and hence characteristics dia- gases heat the water contained inside said 69 metrically opposite to the necessary ones. 125 tank 6.

In fact, in as much as a water heating appli-

Claims

ance is generally fastened onto a wall far CLAIMS away from the main wall,

provided with win- 1. A system for producing hot water, com- dow, of the bathroom, a rather long run exists prising (a) a gas-fed boiler including a water always for both the flue gases and air, and 130 storage tank and an exhaust duct for flue gas 2 GB2194332A 2 from the boiler; and (b) means for drawing combustion air into the boiler via a first pipe and for expelling flue gas from the boiler via said exhaust duct and via a second pipe, said second pipe being disposed within said first pipe.
2. A system as claimed in claim 1, modi- fied in that said first pipe is absent.
3. A system as claimed in claim 1 or 2, wherein the means for drawing combustion air into the boiler and for expelling flue gas from the boiler comprises a toroidal-chamber regen erative compressor.
4. Gas-fed storage system for the pro- duction of hot water comprising a gas-fed boiler:provided with a water storage tank through which the exhaust duct for the flue gases runs axially, characterized in that the combustion air is sucked from the outside, through a first pipe, by a toroidal-chamber re generative compressor which expels the flue gases to the outside, by forcing them inside a second pipe provided coaxially inside the said first pipe.
5. Storage system according to claim 1, characterized in that said first pipe is absent, and the combustion air is sucked from the same room inside which the system is in stalled.
6. Storage system according to one of the preceding claims, characterized in that said to roidal-chamber regenerative compressor sucks the fuel gases, as well as the combustion air, from the top of the boiler, and delivers said flue gases to the outside.
7. Gas-fed storage system for the pro- duction of hot water for household use, as substantially herein disclosed and illustrated.

Published 1988 at The Patent Office, State House, 66/71 HighHolborn, London WC 1 R 4TP. Further copies may be obtained from The Patent Office, Sales Branch, St Mary Cray, Orpington, Kent BR5 3RD.

Printed by Burgess & Son (Abingdon) Ltd. Con 1/87.