Water heating and distribution system and system control device

Abstract

A water heating and distribution includes a water heating device for heating water, a water output device connected to the water heating device and configured to output the heated water from the water heating device, and a system control device connected to the water heating device and the water output device. The system control device is configured to allow the water heating device to receive water from a water supply when the system control device works in a first mode. The system control device is configured to disconnect the water heating device from the water supply and allow water to circulate between the water heating device and the water output device when the system control device works in a second mode.

What is claimed is: 
     
         1 . A water heating and distribution system comprising:
 a water heating device configured to heat water;   a water output device connected to the water heating device and configured to output the water from the water heating device; and   a system control device connected to the water heating device and the water output device;   wherein the system control device is configured to allow the water heating device to receive water from a water supply when the system control device works in a first mode, and the system control device is configured to disconnect the water heating device from the water supply and allow the water to circulate between the water heating device and the water output device when the system control device works in a second mode.   
     
     
         2 . The water heating and distribution system of  claim 1 , wherein the system control device comprises a pump to drive water to circulate between the water heating device and the water output device. 
     
     
         3 . The water heating and distribution system of  claim 2 , wherein the pump is turned off when the system control device works in the first mode, the pump is turned on when the system control device works in the second mode. 
     
     
         4 . The water heating and distribution system of  claim 3 , wherein the system control device further comprises a housing and a switch mounted in the housing, the pump is mounted to the switch. 
     
     
         5 . The water heating and distribution system of  claim 4 , wherein the switch comprises a first port, a second port, and a third port, when the system control device works in the first mode, the first port is connected to the water supply, the second port is connected to the water heating device, and the third port is connected to the water output device; when the system control device works in the second mode, the first port is connected to the water heating device, the second port is connected to the water output device, and the third port is closed. 
     
     
         6 . The water heating and distribution system of  claim 4 , wherein the system control device is changed between the first mode and the second mode by rotating the switch. 
     
     
         7 . The water heating and distribution system of  claim 5 , wherein the pump is located between the first port and the second port. 
     
     
         8 . The water heating and distribution system of  claim 4 , wherein the system control device comprises a control unit connected to the switch and configured to drive the switch to rotate according to instructions. 
     
     
         9 . The water heating and distribution system of  claim 8 , wherein the system control device further comprises an urgent stopping switch configured to change the second mode to the first mode, the urgent stopping switch is connected to the control unit. 
     
     
         10 . The water heating and distribution system of  claim 8 , wherein the system control device further comprises an operation unit connected to the control unit, the operation unit is configured to send the instructions to the control unit. 
     
     
         11 . The water heating and distribution system of  claim 4 , wherein the switch is substantially T-shaped. 
     
     
         12 . A system control device in a water heating and distribution system, comprising:
 a switch; and   a pump mounted to the switch;   wherein the switch is configured to allow the water heating and distribution system to receive water from a water supply when the system control device works in a first mode, and the switch is configured to disconnect the water heating and distribution system from the water supply, and the pump is configured to drive the water to circulate in the water heating and distribution system when the system control device works in a second mode.   
     
     
         13 . The system control device of  claim 12 , further comprising a housing, wherein the switch is movably mounted in the housing, the system control device is changed between the first mode and the second mode by rotating the switch. 
     
     
         14 . The system control device of  claim 12 , wherein the switch comprises a first port, a second port, and a third port, when the system control device works in the first mode, the first port is configured to connect to the water supply, the second port is configured to connect to a water heating device, and the third port is configured to connect to a water output device; when the system control device works in the second mode, the first port is configured to connect to the water heating device, the second port is configured to connect to the water output device, and the third port is configured to be closed. 
     
     
         15 . The system control device of  claim 14 , wherein the pump is located between the first port and the second port. 
     
     
         16 . The system control device of  claim 12 , further comprising a control unit connected to the switch, wherein the control unit is configured to drive the switch to rotate according to instructions. 
     
     
         17 . The system control device of  claim 16 , further comprising an urgent stopping switch connected to the control unit, wherein the urgent stopping switch is configured to change the second mode to the first mode. 
     
     
         18 . The system control device of  claim 16 , further comprising an operation unit connected to the control unit, wherein the operation unit is configured to send the instructions to the control unit. 
     
     
         19 . The system control device of  claim 12 , wherein the switch is substantially T-shaped.