| 摘要 |
<p>An air conditioner includes a pump (7) for periodically removing condensate (2) from a sump (1), the operation of the pump (7) being responsive to the condensate level in the sump (1) as sensed by a positive temperature coefficient resistor (8) located in the sump (1). The use of a positive temperature coefficient resistor has the advantage that foreign matter such as metal particles or biological growths do not impair its operation, contrary to the case with the level sensing devices conventionally used, such as float switches and electrical conductivity switches. <IMAGE></p> |
