초록 ▼

A flexible shower arm assembly that allows the user to repeatably adjust the position of the shower head in three dimensions by configuring the shape of the shower arm attached between the water source, such as a shower pipe, and the water dispenser, such as a shower head. The particular position of

A flexible shower arm assembly that allows the user to repeatably adjust the position of the shower head in three dimensions by configuring the shape of the shower arm attached between the water source, such as a shower pipe, and the water dispenser, such as a shower head. The particular position of the shower head, and the direction of the shower spray, can be modified by re-configuring the shape of the shower arm. The flexible shower arm holds the desired position until modified by the user. The flexible shower arm is sealingly attached to the shower pipe by a pipe connector nut, and is sealingly and pivotally attached to the shower head by a connection structure. The flexible shower arm assembly includes an elongated flexible member defining a fluid transfer path, the flexible member having a first end and an opposite second end. The first end of the flexible member is connected in fluid communication with the shower pipe, and the second end of the flexible member is connected in fluid communication to a shower head. A sheath covers the flexible arm from the first end to the second end.

대표청구항 ▼

A flexible shower arm assembly that allows the user to repeatably adjust the position of the shower head in three dimensions by configuring the shape of the shower arm attached between the water source, such as a shower pipe, and the water dispenser, such as a shower head. The particular position of

A flexible shower arm assembly that allows the user to repeatably adjust the position of the shower head in three dimensions by configuring the shape of the shower arm attached between the water source, such as a shower pipe, and the water dispenser, such as a shower head. The particular position of the shower head, and the direction of the shower spray, can be modified by re-configuring the shape of the shower arm. The flexible shower arm holds the desired position until modified by the user. The flexible shower arm is sealingly attached to the shower pipe by a pipe connector nut, and is sealingly and pivotally attached to the shower head by a connection structure. The flexible shower arm assembly includes an elongated flexible member defining a fluid transfer path, the flexible member having a first end and an opposite second end. The first end of the flexible member is connected in fluid communication with the shower pipe, and the second end of the flexible member is connected in fluid communication to a shower head. A sheath covers the flexible arm from the first end to the second end. s include change of position of the mixing valve with respect to change in the actual mixed water temperature at the outlet. 8. A mixing valve apparatus according to claim 6 wherein the operating conditions include the temperature of the input hot water. 9. A mixing valve apparatus according to claim 2 wherein the control system determines the characterisation with respect to time. 10. A mixing valve apparatus according to claim 9 wherein the control system compensates for dead lag in pipes supplying the mixing valve inlets according to the time since the mixing valve was last used. 11. A mixing valve according to claim 2 wherein, upon start up, the control system makes use of the characterisation to move the valve to a position predicted to produce the required temperature at the water outlet. 12. A mixing valve apparatus according to claim 2 wherein, when the mixing valve is not used only for a very short period of time, the control system assumes that the conditions of the water system have not changed and jump starts a start up control loop to restore the valve to its position as previously used. 13. A mixing valve apparatus including: a mixing valve for variably mixing hot and cold water, a valve servo for moving the mixing valve; a control system for operating the valve servo so as to provide a desired mixed water temperature; and a control panel remote from the mixing valve and valve servo for providing a control signal to the control system to select the desired temperature; wherein the control system includes a maximum temperature selector by which a user may specify a maximum mixed water temperature selectable by the control panel; and wherein the control panel includes a display of selectable mixed water temperatures, the display only showing temperatures up to the selected maximum mixed water temperature and the display has a fixed predetermined extent, the scale of which is varied according to the selected maximum mixed water temperature. 14. A mixing valve apparatus according to claim 13 wherein the maximum temperature selector is provided proximate the valve and the valve servo. 15. A mixing valve apparatus according to claim 13 wherein the control panel includes a member movable between two predetermined end positions to select the mixed water temperature and wherein one of the predetermined end positions selects the selected maximum mixed water temperature and the scale of selectable mixed water temperatures between the two predetermined end positions is adjusted according to the selected maximum mixed water temperature. 16. A mixing valve apparatus including: a cold water inlet and a hot water inlet; a mixing valve for mixing water received at the cold water inlet and the hot water inlet and supplying the mixed water to a water outlet, the inlets and outlets being for connection to al external water system; a valve servo for moving the position of the valve; and a control system for operating the valve servo and thereby controlling flow from the water outlet, the control system including a temperature sensor for providing an indication of the temperature at the water outlet and a control loop for comparing the desired temperature with that provided by the temperature sensor so as to operate the valve servo; wherein the control system additionally includes a transient detector for determining from the temperature indicated by the temperature sensor transients in the properties of the water received at the cold water inlet and the hot water inlet and overriding the control loop to control the valve servo in the event of a transient. 17. A mixing valve according to claim 16 wherein, in the event of a transient the valve servo is controlled to rapidly reduce the supply of water from the hot water inlet to the water outlet to substantially zero. 18. A mixing valve apparatus according to claim 16 the transient detector continuously monitors the rate of change in temperature indicated by th