Pump Arrangement with Speed Control

Abstract

A pump arrangement for bodies of water or containers with water subject to biological influences has at least one water pump and a control device controlling the speed of the water pump. At least one temperature sensor measures the water temperature and provides signals of the measured water temperature. The signals are processed in the control device and the speed of the pump water is controlled by the control device based on the signals.

1 . A pump arrangement for bodies of water or containers with water subject to biological influences, the pump arrangement comprising: 
 at least one water pump;    a control device controlling a speed of the water pump;    at least one temperature sensor measuring water temperature and providing signals of the measured water temperature, wherein the signals are processed in the control device and the speed of the pump water is controlled by the control device based on the signals.    
   
   
       2 . The pump arrangement according to  claim 1 , wherein the control device comprises control electronics and a data memory with a control software.  
   
   
       3 . The pump arrangement according to  claim 1 , wherein in the data memory a temperature limit is preset, wherein the control device adjusts the water pump to operate at maximum speed when the temperature limit is reached.  
   
   
       4 . The pump arrangement according to  claim 2 , wherein in the data memory temperature limits for partial loads of the water pump are provided, wherein the control device adjusts in steps the speed of the water pump based on the temperature limits.  
   
   
       5 . The pump arrangement according to  claim 2 , wherein the control electronics control the speed of the water pump continuously.  
   
   
       6 . The pump arrangement according to  claim 2 , wherein the control electronics control the pump speed lineraly at least for some water temperature ranges based on the measured water temperature.  
   
   
       7 . The pump arrangement according to  claim 2 , wherein the control electronics control the pump speed exponentially at least for some water temperature ranges based on the measured water temperature.  
   
   
       8 . The pump arrangement according to  claim 1 , wherein the control device is integrated into the pump.  
   
   
       9 . The pump arrangement according to  claim 1 , wherein the water pump has a switch for actuating the control device, wherein the switch is accessible from the exterior of a housing of the water pump.  
   
   
       10 . The pump arrangement according to  claim 1 , wherein the at least one temperature sensor is integrated into the water pump.  
   
   
       11 . The pump arrangement according to  claim 10 , wherein the at least one temperature sensor is arranged in the interior of a housing of the water pump.  
   
   
       12 . The pump arrangement according to  claim 10 , wherein water pump has a pump motor with coils, wherein the at least one temperature sensor is arranged within the housing of the water pump at a distance as large as possible from each of the coils of the pump motor.