| 摘要 |
<p>The device has heat pumps (7-10) that are arranged for heating the process water in tub (1). A connection pipe (25) is extended from bottom (21) to waste water tank (6). The water tank is provided with an apex region (30) which is located at a height higher than top of tank and higher than bottom. The waste water tank is connected to drain (5) through a connecting pipe (26). A pump (15) is provided to convey the process water through the connection pipe (25) from the tub into the waste water tank, where apex region is provided with no vent.</p> |
