摘要:
A vortex-flow blower device includes an impeller having a plurality of fins, a blower housing that has a vortex flow chamber for accommodating the impeller and extends from a start point on a side of a the fluid inlet port to an end point on a side of a fluid discharge port along the plurality of fins, a partitioning portion that blocks a communication between the end point and the start point in the vortex flow chamber, and a thermal fuse that is provided in the blower housing. The thermal fuse can be fused by a temperature rise so as to discharge the fluid on the side of the fluid discharge port to an outside, or communicate with the side of the fluid discharge port to the side of the fluid inlet port in the vortex flow chamber when the thermal fuse is fused.
摘要:
A rotary blade molding method, a rotary blade molding die and a rotary blade molded thereby are disclosed. A cavity (79) for molding an impeller (31) is formed between a fixed-side die plate (59) and a movable-side die plate (75). The movable-side die plate (75) has a plurality of outer through holes (81) formed in spaced relation to each other in the peripheral direction on the inner peripheral surface of the cavity (79) and extending in the direction along which the fixed-side die plate (59) and the movable-side die plate (75) move away from or toward each other. Outer ejector pins (83) are removably inserted into the outer through holes (81), respectively. By changing the length of the outer ejector pins (83), the axial position of the forward end surface of each outer ejector pin (83) with respect to the inner peripheral surface of the cavity (79) is changed, so that the thickness of a molded product is changed thereby to adjust the balance of the impeller (31) around the axis thereof. As a result, the unbalance of the rotary blade can be adjusted by an inexpensive and simple method.
摘要:
A vortex-flow blower device includes an impeller having a plurality of fins, a blower housing that has a vortex flow chamber for accommodating the impeller and extends from a start point on a side of a the fluid inlet port to an end point on a side of a fluid discharge port along the plurality of fins, a partitioning portion that blocks a communication between the end point and the start point in the vortex flow chamber, and a thermal fuse that is provided in the blower housing. The thermal fuse can be fused by a temperature rise so as to discharge the fluid on the side of the fluid discharge port to an outside, or communicate with the side of the fluid discharge port to the side of the fluid inlet port in the vortex flow chamber when the thermal fuse is fused.
摘要:
A fluid pumping system is disclosed that includes a housing in which a fluid flows. The fluid pumping system also includes a vane wheel that is rotatably supported in the housing and that has a plurality of vane portions. At least one of the vane portions is swept-forward such that an axial end of the at least one of the vane portions extends toward the direction of rotation of the vane wheel.
摘要:
In the disclosed secondary air supply system, an on-off valve (13) is driven by the discharge pressure of an air pump (12). A diaphragm chamber (44) is arranged in the neighborhood of a discharge outlet (54), and a part of the discharge air flows directly into the diaphragm chamber (44). Thus, the on-off valve (13) is positively operated even at high places with low atmospheric pressure and has a fast open/close response. As an electromagnetic actuator is not used to drive the on-off valve (13), the voltage supplied to the air pump (12) (DC motor (29)) does not drop inconveniently, and at the same time, the cost is reduced. Further, the number of the lead wires (65) is reduced.
摘要:
A pump unit (14) has an air pump and a valve device, wherein the valve device has a pressure chamber and a pressure control device, so that the air from the air pump is introduced into the pressure chamber and the pressure in the pressure chamber is controlled by the pressure control device. The pump unit has an outlet port, an opening of which is controlled by a valve body driven by a diaphragm, so that the amount of the air to be supplied through the outlet port is controlled by the pressure of the pressure chamber.
摘要:
A self-opened type valve is opened by motor torque of an electric motor. Therefore, a diaphragm is not necessary for opening the valve, and downsizing of a valve drive apparatus for opening the valve is possible. Since the valve is assembled to the motor shaft of the electric air pump via a motion-direction conversion mechanism, an opening action of the valve can start in a short time after a rotational action of the impeller of the electric air pump starts, so that control responsiveness is improved. At a rotation stop of the impeller of the electric air pump, the valve can be maintained in a fully closed condition by an urging force of the coil spring, thereby preventing exhaust gases or condensed water from entering into an inside of the electric air pump.
摘要:
A self-opened type valve is opened by motor torque of an electric motor. Therefore, a diaphragm is not necessary for opening the valve, and downsizing of a valve drive apparatus for opening the valve is possible. Since the valve is assembled to the motor shaft of the electric air pump via a motion-direction conversion mechanism, an opening action of the valve can start in a short time after a rotational action of the impeller of the electric air pump starts, so that control responsiveness is improved. At a rotation stop of the impeller of the electric air pump, the valve can be maintained in a fully closed condition by an urging force of the coil spring, thereby preventing exhaust gases or condensed water from entering into an inside of the electric air pump.
摘要:
In an air supply pump, having an electric motor and a blower driven by the electric motor, the blower has an impeller having multiple blades for compressing and pumping out the air. A value (F) obtained by a formula (F=N×S) is made to be higher than the audible frequency band to the human beings, wherein “N” means number of blades of the impeller, and “S” means a number of rotation of the impeller for each second at a normal rotational speed. (“×” is a symbol for a mathematical multiplication.) The frequency (F=N×S) of fan noises at a primary peak appears at higher frequencies out of the audible frequency band, so that the noises audible to the human beings can be reduced.
摘要:
A casing of a regenerative pump forms a generally annular fluid passage, which conducts a fluid. An impeller is rotatably received in the casing and has a plurality of blades, which are arranged one after another in a circumferential direction to provide kinetic energy to the fluid in the fluid passage upon rotation of the impeller. The regenerative pump satisfies a relationship of 0.60≦b/a≦0.76, where “a” is an axial width of each blade, and “b” is a total axial distance, which is a sum of a first axial distance between a first axial side outer edge of the blade and an opposed first axial side inner wall of the fluid passage and a second axial distance between a second axial side outer edge of the blade and an opposed second axial side inner wall of the fluid passage.
摘要翻译:再生泵的壳体形成大体上环形的流体通道,其传导流体。 叶轮可旋转地容纳在壳体中,并且具有多个沿圆周方向一个接一个地布置的叶片,以在叶轮旋转时向流体通道中的流体提供动能。 再生泵满足0.60 <= b / a <= 0.76的关系,其中“a”是每个叶片的轴向宽度,“b”是总轴距离,其为总轴向距离, 叶片的第一轴向侧边缘和流体通道的相对的第一轴向侧内壁和叶片的第二轴向侧边缘与流体通道的相对的第二轴向侧内壁之间的第二轴向距离。