GB2156498A

GB2156498A - Hot water storage vessel

Info

Publication number: GB2156498A
Application number: GB08507937A
Authority: GB
Inventors: John Barrie Fidler
Original assignee: PLUMBING EQUIPMENT Ltd
Current assignee: PLUMBING EQUIPMENT Ltd
Priority date: 1984-03-28
Filing date: 1985-03-27
Publication date: 1985-10-09
Also published as: GB8408033D0; GB2156498B; GB8507937D0

Abstract

A hot water storage vessel wherein the water inlet and outlet connections are all made through the top of said vessel. Said vessel, in the form of a hot water cylinder, has its entire inner surface lined with a synthetic plastics material, said lining extending to the top of a neck of said vessel. <IMAGE>

Description

SPECIFICATION Hot water storage vessel This invention relates to hot water storage vessels, and particularly to such vessels commonly known as hot water cylinders.

According to the present invention there is provided a hot water storage vessel wherein the water inlet and outlet connections are all made through the top of said vessel.

Preferably, said vessel in the form of a hot water cylinder, will have its entire inner surface lined with a synthetic plastic material.

Said material will preferably be polyethylene.

Said vessel will have a neck at its upper extremity and the lining of the vessel will extend to the top and outer extremity of of said neck.

Said neck will be closed by a cover or flange plate through which all the water inlet and outlet connections will pass, said cover or flange plate also facilitating the location of relief valve means and an immersion heater for said vessel.

The cover will preferably carry an upwardly extending support member for supporting a potable water expansion vessel.

In order that the invention may be more readily understood, an embodiment thereof will now be described, by way of example, reference being made to the accompanying drawings, wherein: Figure 1 is a diagrammatic cross-section of a hot water storage vessel according to the invention; Figure 2 is a plan view, to a larger scale, of a part of the storage vessel of Fig. 1; and Figure 3 is an elevation of a copper flange plate and fittings assembly forming part of Fig. 1.

Referring to the drawings, a hot water storage vessel, in the form of a cylinder 1, has a neck 2 which is closed by a copper flange plate 5 and steel backing plate 6 secured to said cylinder by bolts (not shown) through the intermediary of a seal or gasket 4 composed of rubber.

The cylinder is composed of steel or a synthetic plastics material such as Nylon (R.T.M.) and more specifically CAPRON (R.T.M.).

The whole of the interior of the cylinder 1 is lined with a layer 3 of synthetic plastics material, preferably polyethylene. As will be seen, the lining 3, which is bonded to the interior of the cylinder extends over the neck 2 to the outer extremity thereof, such that there is no interruption in the lining 3 within the cylinder. The cylinder 1 has a plinth 7 to enable the cylinder to be firmly supported.

The steel backing plate 6 carries a support member 8 for supporting a potable water expansion vessel 11.

As will be seen from the drawing, all of the connections to and from the interior of the cylinder 1 are through the top of the cylinder, i.e. through the neck 2 thereof, all said connections being sealed through and carried by the copper flange plate 5 by brazing or similar means.

The cold feed inlet to the cylinder, is indicated by reference numeral 15, whilst the hot water draw off position is indicated by reference numeral 14. A primary flow coil is shown by reference numeral 13, a pressure/temperature relief valve by reference numeral 12, and an immersion heater boss by reference numeral 16, an immersion heater itself being indicated by reference numeral 1 6A.

The arrangement of these connections is best seen in Fig. 2.

The cold water feed inlet 1 5 incorporates a pressure limiting valve 1 0, a combined line strainer and non-return valve 9, and an expansion relief valve 1 7.

It will thus be seen that with all of the connections being through the top of the cylinder, due to the presence of the neck 2, there is no necessity to breach or damage the lining 3 of plastics material in order to locate said connections-as is done in conventional hot water storage vessels-and thus the material of the cylinder will not be in contact with the water, so ensuring a longer life of the cylinder without using the conventional sacrificial anode, used in many types of lined vessels.

It will be appreciated that whilst a particular embodiment of a hot water storage vessel has been described and illustrated, the invention is equally applicable to other forms of hot water storage vessels.

It will also be appreciated that the arrangement of the water and other connections may differ from that shown in the drawing.

1. A hot water storage vessel wherein the water inlet and outlet connections are all made through the top of said vessel.

2. A hot water storage vessel according to Claim 1, wherein the entire inner surface of the vessel is lined with a synthetic plastics material.

3. A hot water storage vessel according to Claim 2, wherein said synthetic plastics material is polyethylene.

4. A hot water storage vessel according to Claim 2 or Claim 3, wherein said vessel has a neck, the lining of said vessel extending to the top of said neck.

5. A hot water storage vessel according to Claim 4, wherein said neck is closed by a cover through which pass all said water inlet and outlet connections.

6. A hot water storage vessel according to Claim 5, wherein said cover also facilitates the location of relief valve means and an immersion heater for said vessel.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Hot water storage vessel This invention relates to hot water storage vessels, and particularly to such vessels commonly known as hot water cylinders. According to the present invention there is provided a hot water storage vessel wherein the water inlet and outlet connections are all made through the top of said vessel. Preferably, said vessel in the form of a hot water cylinder, will have its entire inner surface lined with a synthetic plastic material. Said material will preferably be polyethylene. Said vessel will have a neck at its upper extremity and the lining of the vessel will extend to the top and outer extremity of of said neck. Said neck will be closed by a cover or flange plate through which all the water inlet and outlet connections will pass, said cover or flange plate also facilitating the location of relief valve means and an immersion heater for said vessel. The cover will preferably carry an upwardly extending support member for supporting a potable water expansion vessel. In order that the invention may be more readily understood, an embodiment thereof will now be described, by way of example, reference being made to the accompanying drawings, wherein: Figure 1 is a diagrammatic cross-section of a hot water storage vessel according to the invention; Figure 2 is a plan view, to a larger scale, of a part of the storage vessel of Fig. 1; and Figure 3 is an elevation of a copper flange plate and fittings assembly forming part of Fig. 1. Referring to the drawings, a hot water storage vessel, in the form of a cylinder 1, has a neck 2 which is closed by a copper flange plate 5 and steel backing plate 6 secured to said cylinder by bolts (not shown) through the intermediary of a seal or gasket 4 composed of rubber. The cylinder is composed of steel or a synthetic plastics material such as Nylon (R.T.M.) and more specifically CAPRON (R.T.M.). The whole of the interior of the cylinder 1 is lined with a layer 3 of synthetic plastics material, preferably polyethylene. As will be seen, the lining 3, which is bonded to the interior of the cylinder extends over the neck 2 to the outer extremity thereof, such that there is no interruption in the lining 3 within the cylinder. The cylinder 1 has a plinth 7 to enable the cylinder to be firmly supported. The steel backing plate 6 carries a support member 8 for supporting a potable water expansion vessel 11. As will be seen from the drawing, all of the connections to and from the interior of the cylinder 1 are through the top of the cylinder, i.e. through the neck 2 thereof, all said connections being sealed through and carried by the copper flange plate 5 by brazing or similar means. The cold feed inlet to the cylinder, is indicated by reference numeral 15, whilst the hot water draw off position is indicated by reference numeral 14. A primary flow coil is shown by reference numeral 13, a pressure/temperature relief valve by reference numeral 12, and an immersion heater boss by reference numeral 16, an immersion heater itself being indicated by reference numeral 1 6A. The arrangement of these connections is best seen in Fig. 2. The cold water feed inlet 1 5 incorporates a pressure limiting valve 1 0, a combined line strainer and non-return valve 9, and an expansion relief valve 1 7. It will thus be seen that with all of the connections being through the top of the cylinder, due to the presence of the neck 2, there is no necessity to breach or damage the lining 3 of plastics material in order to locate said connections-as is done in conventional hot water storage vessels-and thus the material of the cylinder will not be in contact with the water, so ensuring a longer life of the cylinder without using the conventional sacrificial anode, used in many types of lined vessels. It will be appreciated that whilst a particular embodiment of a hot water storage vessel has been described and illustrated, the invention is equally applicable to other forms of hot water storage vessels. It will also be appreciated that the arrangement of the water and other connections may differ from that shown in the drawing. CLAIMS

7. A hot water storage vessel according to Claim 5 or Claim 6, wherein said cover is backed by a steel backing plate, said backing plate carrying an upwardly extending support member for supporting a water expansion vessel.

8. A hot water storage vessel according to any of the preceding Claims, wherein said vessel is composed of steel or a synthetic plastics material.

9. A hot water storage vessel substantially as herein described.

10. A hot water storage vessel substantially as herein described with reference to and as illustrated in the accompanying drawings.