GB2078354A - Low-voltage pump apparatus for a domestic shower - Google Patents

Abstract

The pump 8 is driven via a safety transformer or transformer/rectifier 9 fitted with a switch. Such apparatus increases the head of water in a domestic hot water system to a value sufficient to supply a shower. The pump and transformer/rectifier are fitted to the hot water piping 5, 6 of the hot water system, the transformer/rectifier being secured to a pipe of suitable size by means of special clamps on the rear, Figure 2 (not shown), in a position most convenient to the user. Typically the pump and trans./rect. will be fitted in the linen cupboard and switched on when a shower is required. <IMAGE>

Description

SPECIFICATION Extra low voltage pump for domestic showers This invention concerns the problem of insufficient head in the hot water system of a typical house to provide sufficient pressure at the bath taps to give a reasonable shower.

Most shower systems that wish to utilise the existing hot water system have to have modifications made to typically raise the hot water header tank by several feet into the apex of the roof.

The subject of this patent request is an inexpensive method and easy way of getting the pressure on the hot tap.

Figure 1 shows a typical domestic hot water system, the cold water feeds the header tank 1 which is usually positioned either just above or just below the ceiling level, the shower head over shower rose 2 is insufficient to give a shower.

Cold water from this tank is fed to the hot cylinder 3, hot water flows from pipe 4 to a branch one pipe goes up to the expansion pipe and the second goes to feed the hot taps 7.

This patent concerns the insertion off an extra low voltage centrifugal pump 8 in the pipe leading to the hot taps. This pump being of the centrifugal type allows free water flow through it when it is not pumping.

The use of an extra low voltage elctric pump operated from a safety transformer or transformer rectifier means that the pump can be positioned in any position safetly without the limitations prescribed for a mains operated pump.

The electric motors used for the purpose will be high speed brush motors, their high speed means that for agiven output the motor is very small so low in cost.

The safety tramsformer or transformer rectifier 9 is fitted in the linen cupboard or similar placeand is connected to a suitable mains electric supply, it is equiped with a switch. see Figure 2.

It is made such that it can be clamped to any convenient pipe of regular dimensions by means of clamps 1 Oover a pipe or fitted to a surface by means of screws.

In practice a user who desires a shower will switch on the transformer hence the pump which will provide the necessary head for the duration of the shower.

1. The unique use of an extra low voltage pump driven from a safety transformer or transformer rectifier to raise the head on a whole or part of a hot water system for the purpose of enabling the user to get an adequate shower.

2. The construction of a safety transformer or transformer rectifier so that it can be mounted as an option onto a regular pipe.

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

Claims (2)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Extra low voltage pump for domestic showers This invention concerns the problem of insufficient head in the hot water system of a typical house to provide sufficient pressure at the bath taps to give a reasonable shower. Most shower systems that wish to utilise the existing hot water system have to have modifications made to typically raise the hot water header tank by several feet into the apex of the roof. The subject of this patent request is an inexpensive method and easy way of getting the pressure on the hot tap. Figure 1 shows a typical domestic hot water system, the cold water feeds the header tank 1 which is usually positioned either just above or just below the ceiling level, the shower head over shower rose 2 is insufficient to give a shower. Cold water from this tank is fed to the hot cylinder 3, hot water flows from pipe 4 to a branch one pipe goes up to the expansion pipe and the second goes to feed the hot taps 7. This patent concerns the insertion off an extra low voltage centrifugal pump 8 in the pipe leading to the hot taps. This pump being of the centrifugal type allows free water flow through it when it is not pumping. The use of an extra low voltage elctric pump operated from a safety transformer or transformer rectifier means that the pump can be positioned in any position safetly without the limitations prescribed for a mains operated pump. The electric motors used for the purpose will be high speed brush motors, their high speed means that for agiven output the motor is very small so low in cost. The safety tramsformer or transformer rectifier 9 is fitted in the linen cupboard or similar placeand is connected to a suitable mains electric supply, it is equiped with a switch. see Figure 2. It is made such that it can be clamped to any convenient pipe of regular dimensions by means of clamps 1 Oover a pipe or fitted to a surface by means of screws. In practice a user who desires a shower will switch on the transformer hence the pump which will provide the necessary head for the duration of the shower. CLAIMS

1. The unique use of an extra low voltage pump driven from a safety transformer or transformer rectifier to raise the head on a whole or part of a hot water system for the purpose of enabling the user to get an adequate shower.

2. The construction of a safety transformer or transformer rectifier so that it can be mounted as an option onto a regular pipe.