| 摘要 |
<p>In regulating a burning gas quantity of a gas combustion apparatus, a gas flow controller is used. The gas flow controller is constructed such that a closing member (36) within a cock (35) is rotated by using a motor (50). The closing member has a plurality of holes (38, 61) formed in the axial direction of the member and a plurality of grooves (39, 62) each corresponding to the hole and formed in the circumferential direction of the member. The cock is used for changing, opening and closing a plurality of orifice passageways (40, 63). The motor is driven in accordance with a signal from a position determining unit (53) which discriminates the position of the cock. The gas flow controller can advantageously ensure a high precision of gas flow, a high reduction ratio, and a low power consumption.</p> |
