| 摘要 |
<p>PURPOSE:To aim at effectively cooling a water supply device and at lowering noise by providing a fan in a pump chamber, by providing a ventilation duct communicated to the outside, and by lining a sound absorbing material having a heat-insulative effect in the pump chamber. CONSTITUTION:A low noise type water supply device has a pump chamber A in which two pumps 1a, 1b are disposed, and a control chamber B in which a control device 2 is disposed, the pump chamber A and the control chamber B being isolated from each other. The control chamber B is formed therein with an intake port 21 for introducing the outside air, and the pump chamber A is formed therein with a ventilating duct 23 for discharging air in the pump chamber A to the outside. When a fan 26 is driven, the air in the pump chamber A is compulsorily discharged to the outside. A sound absorbing material 28 having heat-insulating effect is lined in the pump chamber A. Thus, it is possible to aim at effectively cooling the water supply device, and at surely lowering noise.</p> |
