Method for collecting condensate inside an apparatus, apparatus equipped with a condensate collection system and motor-pump assembly intended for a condensate collection system
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A method for collecting condensate inside an apparatus, including: providing a condensate collection system with bottom and top collection tanks; a condensate discharge pump to displace liquid from the bottom collection tank to the top collection tank; and an overflow system which displaces the liqu
A method for collecting condensate inside an apparatus, including: providing a condensate collection system with bottom and top collection tanks; a condensate discharge pump to displace liquid from the bottom collection tank to the top collection tank; and an overflow system which displaces the liquid contained in the top collection tank that exceeds an overflow level into the bottom collection tank; collecting a condensed liquid in the bottom collection tank; actuating the condensate discharge pump to displace the condensed liquid from the bottom collection tank into the top collection tank; detecting a low load condition of the condensate discharge pump, actuation of the condensate discharge pump being interrupted upon detection of the low load condition; the actuating time (T2) of the condensate discharge pump, with signalling of a full condition of the condensate collection system when this actuating time (T2) is equal or larger than a maximum time (T2lim).
대표청구항▼
1. A method for collecting the condensate inside an apparatus, said method comprising the following steps: providing a condensate collection system comprising: a bottom collection tank and a top collection tank; a condensate discharge pump intended to displace liquid from the bottom collection tank
1. A method for collecting the condensate inside an apparatus, said method comprising the following steps: providing a condensate collection system comprising: a bottom collection tank and a top collection tank; a condensate discharge pump intended to displace liquid from the bottom collection tank to the top collection tank; and an overflow system which causes displacement of the liquid that is contained in the top collection tank and that exceeds an overflow level into the bottom collection tank;collecting a condensed liquid during operation of said apparatus in the bottom collection tank;actuating said condensate discharge pump in order to displace said condensed liquid from the bottom collection tank into the top collection tank; said method comprising the further steps of: at the same time as the step of actuating said condensate discharge pump, detecting a low load condition of said condensate discharge pump, actuation of the condensate discharge pump being interrupted upon detection of said low load condition;at the same time as the step of actuating said condensate discharge pump, performing a measurement of the actuating time of the condensate discharge pump, with signalling of a full condition of the condensate collection system when this actuating time is equal or larger than a maximum time. 2. The method according to claim 1, wherein said low load condition corresponds to operation of the condensate discharge pump under no load. 3. The method according to claim 1, wherein said low load condition corresponds to operation of the condensate discharge pump in air-water conditions. 4. The method according to claim 1, wherein said step of detecting a low load condition of the condensate discharge pump is performed by a local control board which is installed on the condensate discharge pump itself. 5. The method according to claim 4, wherein said step of performing a measurement of the actuating time of the condensate discharge pump is also performed by the local control board. 6. The method according to claim 4, wherein said step of performing a measurement of the actuating time of the condensate discharge pump is carried out by a main control board of the apparatus also intended to control other electronic devices in the apparatus. 7. The method according to claim 6, wherein, in order to perform a measurement of the actuating time of the condensate discharge pump, the actuating state of the condensate discharge pump is determined by means of a two logic state current measurement. 8. The method according to claim 1, wherein said step of detecting a low load condition of the pump is a sensorless step. 9. The method according to claim 1, wherein said condensate discharge pump is actuated by a permanent-magnet synchronous electric motor, said step of actuating said condensate discharge pump comprising a step of driving said electric motor by means of phase regulation control so as to obtain in feedback a condition of minimum phase-shift between current supplying the windings of the electric motor and generated counter-electromotive force, said step of detecting a low load condition of the condensate discharge pump involving verification of the firing angle applied during phase regulation control, where said low load condition is indicated by a maximum firing angle being exceeded. 10. The method according to claim 9, wherein said electric motor is a permanent-magnet single-phase synchronous electric motor. 11. The method according to claim 1, wherein said step of actuating said condensate discharge pump is performed cyclically during operation of the apparatus. 12. The method according to claim 1, wherein said maximum actuating time is equal to or greater than the actuating time of the condensate discharge pump needed to completely empty the bottom discharge tank in the fully filled condition. 13. The method according to claim 1, wherein signalling of a full condition of the condensate collection system preferably produces halting of the apparatus. 14. The method according to claim 1, wherein said a pump is actuated by a synchronous electric motor, further comprising the step of: steady-state driving of said electric motor by means of phase-cutting control, a feedback setpoint thereof being a condition of minimum phase-shift between current supplying the windings of the electric motor and generated counter-electromotive force; said step of detecting a low load condition of the condensate discharge pump being performed according to the following steps: detecting at least two firing angles successively applied, in relation to said phase-cutting control, during two successive half-periods of a voltage supplying the electric motor;calculating at least one variation between two consecutive firing angles previously detected; comparing said variation, or the sum of said successive variations, with a threshold value, where reaching or exceeding said threshold value identifies said low load condition. 15. The method according to claim 14, wherein the steps of detecting the firing angles and calculating the corresponding variations are repeated continuously for a measurement period at the end of which the comparison between the sum of the variations calculated during the course of said measurement period and the threshold value is performed. 16. An apparatus equipped with a condensate collection system comprising: a bottom collection tank intended to collect the condensed liquid during operation of said apparatus; a top collection tank; a condensate discharge pump intended to displace liquid from the bottom collection tank to the top collection tank; and an overflow system that causes displacement of the liquid that is contained by the top collection tank and that exceeds an overflow level into the bottom collection tank;said apparatus comprising electronic control devices intended to actuate said condensate discharge pump so as to displace said condensed liquid from the bottom collection tank into the top collection tank;said electronic control devices being also intended to:detect, during actuation of the condensate discharge pump, a low load condition of said condensate discharge pump and interrupt actuation of the condensate discharge pump upon detection of said low load condition;perform, during actuation of the condensate discharge pump, a measurement of the actuating time of the condensate discharge pump and signal a full condition of the condensate collection system when this actuating time is equal or larger than a maximum time. 17. A motor-pump assembly comprising a condensate discharge pump, a permanent-magnet single-phase synchronous electric motor intended for actuation thereof, and a local control board intended to drive said electric motor, said local control board being also intended to: detect, during actuation of the condensate discharge pump, a low load condition of said condensate discharge pump and interrupt actuation of the condensate discharge pump upon detection of said low load condition;perform, during actuation of the condensate discharge pump, a measurement of the actuating time of the condensate discharge pump and signal an anomalous condition when this actuating time is equal or larger than a maximum time.
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이 특허에 인용된 특허 (1)
Morgan, Michael; Morgan, Janet S., Combination dehydrator, dry return air and condensed water generator/dispenser.
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