Abstract: A vortex flush toilet includes a toilet stool including a toilet bowl and a rim unit, a water tank unit, a first water discharge unit, a pipe unit, an electric switching valve, and a sensor control unit controlling switching of the electric switching valve between a blocked state and a communicated state. The rim unit is formed with first, second, and third flushing ports having decreasing sectional area, and has first, second, and third water-guiding passages respectively in fluid communication with the first, second, and third flushing ports and each having a width decreasing gradually. A bottom surface of each of the first, second, and third water-guiding passages has a height decreasing gradually and forms a respective one of first, second, and third height differences increasing gradually. An inclination angle defined between the bottom surface of each first, second, and third water-guiding passage and a horizontal line gradually increases.

Abstract: An electric valve includes a valve member switchable between a closing state to close a flow passageway of a valve body and an opening state to open the passageway. An adaptor is connected to the valve member. A motor drives rotation of a rotation shaft connected to the adaptor. A circuit board is electrically coupled to the motor and a backup battery pack. A microprocessor control unit is electrically coupled to the circuit board. The motor drives the valve member through the rotation shaft and the adaptor to switch between the opening and closing states. The microprocessor control unit controls a time delay for switching the valve member from the opening state to the closing state.

Abstract: An electric valve includes a valve member switchable between a closing state to close a flow passageway of a valve body and an opening state to open the passageway. An adaptor is connected to the valve member. A motor drives rotation of a rotation shaft connected to the adaptor. A circuit board is electrically coupled to the motor and a backup battery pack. A microprocessor control unit is electrically coupled to the circuit board. The motor drives the valve member through the rotation shaft and the adaptor to switch between the opening and closing states. The microprocessor control unit controls a time delay for switching the valve member from the opening state to the closing state.

Abstract: A tank-less automatic flush toilet includes a toilet stool, a pipe unit, an electric switching valve, a manual switching valve, and a sensor control unit. The pipe unit includes a flow-in pipe, a flow-out pipe which is upstream of a toilet bowl of the toilet stool, a first bypass pipe which is fluidly connected to the flow-in pipe, and a second bypass pipe which is fluidly connected to the flow-out pipe. The electric switching valve is connected in series between the flow-in and flow-out pipes. The manual switching valve is connected in series between the first and second bypass pipes. The sensor control unit is disposed for controlling the switch of the electric switching valve between a blocked state and a communicated state.

Abstract: A tank-less automatic flush toilet includes a toilet stool, a pipe unit, an electric switching valve, a manual switching valve, and a sensor control unit. The pipe unit includes a flow-in pipe, a flow-out pipe which is upstream of a toilet bowl of the toilet stool, a first bypass pipe which is fluidly connected to the flow-in pipe, and a second bypass pipe which is fluidly connected to the flow-out pipe. The electric switching valve is connected in series between the flow-in and flow-out pipes. The manual switching valve is connected in series between the first and second bypass pipes. The sensor control unit is disposed for controlling the switch of the electric switching valve between a blocked state and a communicated state.

Abstract: An automatic flush toilet includes a toilet stool with a toilet bowl, a water tank unit, a first discharge member, a second discharge member, a pipe unit, a flush valve, a manual actuating unit, an electric switching valve, and a sensor control unit. The electric switching valve is controlled by the sensor control unit to permit water discharged from the first discharge member to flush the toilet bowl. The flush valve is controlled by the manual actuating unit to permit water discharged from the second discharge member to flush the toilet bowl.

Abstract: An automatic flush toilet includes a toilet stool with a toilet bowl, a water tank unit, a first discharge member, a second discharge member, a pipe unit, a flush valve, a manual actuating unit, an electric switching valve, and a sensor control unit. The electric switching valve is controlled by the sensor control unit to permit water discharged from the first discharge member to flush the toilet bowl. The flush valve is controlled by the manual actuating unit to permit water discharged from the second discharge member to flush the toilet bowl.

Abstract: A composite structure of a rotary valve includes a valve body including a containing hole of the disc, and a metal valve body corresponding to the shape of the valve body and formed in the valve body and covered by the valve body, wherein the metal valve body improves the explosion-proof, pressure-proof, and acid/base-resistant strength and circularity of the valve body in the manufacturing process of the rotary valve, the circularity of the valve body is suitable for connecting with a pipe line. A stem is mounted on the disc, wherein the stem is extended upwardly and combined with a handle/gear/electric/pneumatic/hydraulic, or chain operation component, such that the disc can be opened or closed.

Abstract: A composite structure of rotary valve is provided, which includes a body including the containing hole of the disc, and a metal body according to the shape of body formed in the body and covered by the body, wherein the metal body improves the explosion-proof, pressure-proof, and acid/base-resistant strength and circularity of the valve body in the manufacturing process of the rotary valve, the circularity of the body is conducive to connect with a pipe line. A stem is mounted on the disc, wherein the stem is extended upwardly and combined with handle/gear/electric/pneumatic/hydraulic, or chain operation component, such that the disc can be opened or closed.

Abstract: A three-way valve includes a body, a chamber formed in the body, a valve positioned in the chamber and having a shaft formed to extend upward from the valve and connected with a lateral grip at an outside of the body. The grip is rotated to open and close easily the three-way valve. The valve is placed in advance in a mold in which the body is to be formed, and positioned in the chamber after the body is formed by injecting process. O-shaped rings used in conventional three-way valves are not necessary.

Abstract: A fire extinguishing assembly is used in a ventilating duct which has an inner wall, an outer wall, and an insert hole that extends in a radial direction from the outer wall to the inner wall. The fire extinguishing assembly includes a mounting seat having an inner seat wall to be mounted on the outer wall of the duct to cover the insert hole, and an outer seat wall with an inner peripheral seat. The inner peripheral seat defines a through hole that extends to the inner seat wall, and an annular insert portion that extends from the inner seat wall and that is in fluid communication with the through hole. The insert portion can be inserted fittingly into the insert hole to establish fluid communication between the ventilating duct and the through hole. An elongate fire extinguishing body has a connecting end portion, a free end portion formed with a nozzle head that can be brought to pass through the insert portion to extend inwardly of the inner wall via the insert hole.