Automatic selfoptimising and pressure regulated control unit for pumps
First Claim
1. An automatic control unit for a pump circulating at least one of a heating agent and a cooling agent between an energy source and an energy sink through an inlet into and an outlet from the energy sink comprising a pressure sensor for detecting a pressure change of the at least one agent, a controller for determining a temperature of the at least one agent from the detected pressure change of the at least one agent, and first and second temperature sensors for sensing a temperature of the at least one agent in the inlet and in the outlet, respectively, the temperature sensors generating corresponding temperature output signals, the controller receiving the temperature output signals and using a difference between them for controlling the operation of the pump after the detected pressure change has reached a pre-established threshold.
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Abstract
The invention concerns a new control unit for pumps (3) for heat- and chill-transferring media, which records all parameters for the regulation of the pump in or close to the pump independently from the distance to the heat source (2) or cooling source.
Thus the often complex wiring between heat source (2) and heat sink (1) and/or cooling source and cooling sink is omitted. The control unit may be installed directly on the pump (3) or integrated in the pump consequently.
The controller recognizes self learning due to the evaluation of the operating conditions typical system parameters, so that the positioning of the system-dependent temperature differences for control processes is not necessary and can be omitted.
The construction of the pump (3), integrated controller (4) and sensors (7, 8, 9, 10) close-up range enables a manufacturing of completely pumps prepared for the operation including a controller in extremely compact construction.
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Citations
10 Claims
- 1. An automatic control unit for a pump circulating at least one of a heating agent and a cooling agent between an energy source and an energy sink through an inlet into and an outlet from the energy sink comprising a pressure sensor for detecting a pressure change of the at least one agent, a controller for determining a temperature of the at least one agent from the detected pressure change of the at least one agent, and first and second temperature sensors for sensing a temperature of the at least one agent in the inlet and in the outlet, respectively, the temperature sensors generating corresponding temperature output signals, the controller receiving the temperature output signals and using a difference between them for controlling the operation of the pump after the detected pressure change has reached a pre-established threshold.
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10. A control unit for heating or cooling an energy sink with energy from an energy source, the hydraulic circuit including an intake into and an outlet from the energy sink, and a pump between the energy sink and the energy source for flowing at least one of a heating agent and a cooling agent in the closed circuit between the energy sink and the energy source, a pressure sensor adapted to determine a pressure of the at least one agent in the hydraulic circuit, first and second temperature sensors for sensing the temperature of the at least one agent in the inlet and the outlet, respectively, and a controller operatively coupled with the pressure and temperature sensors for activating the pump after the pressure sensed by the pressure sensor has reached a level indicative that the at least one agent has reached a predetermined threshold temperature, the controller thereafter controlling the operation of the pump on the basis of temperature-responsive signals generated by the temperature sensors.
Specification