466 results about "Float switch" patented technology

Advanced submerged membrane systems are provided. Said submerged membrane systems have multiple membrane modules comprising of strips of flat sheet membrane, bundles of self-support hollow fiber membranes braided together for reinforcement, tubular membranes, and braid supported hollow fiber membranes. Said submerged membrane systems have alternating relay, or two-way floating switch or computer to control filtration and back flush / pulse cleaning. Said submerged membrane systems have an oscillating motor, and aerator which can generate liquid vortex (whirlpool) flow around membrane to keep membrane from fouling. The present invention provides advanced submerge membrane systems at very low cost for drinking water production, wastewater treatment and membrane bioreactors for biotech, pharmaceutical and other industries.

A sump pump control system for monitoring and driving AC pumps that are supplied by directly either by AC utility power, or converted DC battery power. AC power is continuously monitored and the control automatically switches to DC battery supply in the case of power failure. DC battery power is converted to AC power. The control is equipped with unique pump switching circuitry allowing the pumps to be configured in parallel or staggered positions. Both pumps automatically alternate to prevent damage to pumps from humidity and corrosion that can result from remaining idle. Each pump has its own float switch to control operation. A third float switch controls both pumps in case of failure of either pump or float switch. Multiple visual and audio signals are included, displaying present power and pump conditions as well as alerting to any pump malfunction. The control utilizes two 12 volt deep cycle lead acid batteries that are being monitored for voltage level and continuously trickle charged to maintain maximum capacity. Batteries can be paralleled to obtain longer pump running time when AC power fails. The control system also allows for use of a single pump in the absence of a second pump.

A single pump control unit can be coupled to first and second float switches and a pump for purposes of removing fluid from a region such as a sump. A supplemental set of contacts can be provided to couple an alarm indicating signal to a remote alarm. An alarm state can also be transmitted wirelessly.

A sump pump control system for monitoring and driving AC pumps that are supplied by directly either by AC utility power, or converted DC battery power. AC power is continuously monitored and the control automatically switches to DC battery supply in the case of power failure. DC battery power is converted to AC power. The control is equipped with unique pump switching circuitry allowing the pumps to be configured in parallel or staggered positions. Both pumps automatically alternate to prevent damage to pumps from humidity and corrosion that can result from remaining idle. Each pump has its own float switch to control operation. A third float switch controls both pumps in case of failure of either pump or float switch. Multiple visual and audio signals are included, displaying present power and pump conditions as well as alerting to any pump malfunction. The control utilizes two 12 volt deep cycle lead acid batteries that are being monitored for voltage level and continuously trickle charged to maintain maximum capacity. Batteries can be paralleled to obtain longer pump running time when AC power fails. The control system also allows for use of a single pump in the absence of a second pump.

The invention discloses an electric pressure cooker which comprises a cooker body provided with a cooking cavity, a cooker lid arranged on the cooker body to seal the cooking cavity and a lid opening prompter. The lid opening prompter comprises a prompting device arranged on the cooker body or the cooker lid and a float switch connected with the prompting device and communicated with the cooking cavity, and when pressure in the cooking cavity is lower than a preset value, the float switch is connected or disconnected to enable the prompting device to give out prompts. According to the electric pressure cooker, the states of the float switch correspond to pressure in the cooking cavity; when the pressure in the cooking cavity reaches a mounting value which enables lid opening operation to be carried out, the float switch is used for controlling the prompting device to enable the prompting device to give out a lid opening prompt; after the prompting device gives out the lid opening prompt, a user can carry out lid opening operation according to the prompt, and the electric pressure cooker is more convenient and safer to use.

A single pump control unit can be coupled to first and second float switches and a pump for purposes of removing fluid from a region such as a sump. A supplemental set of contacts can be provided to couple an alarm indicating signal to a remote alarm. An alarm state can also be transmitted wirelessly.

The washing machine flood prevention system provides an interruptible power supply to a washing machine. In the event of potential flooding by the washing machine, power to the washing machine is interrupted and an alarm is delivered to the user. The washing machine flood prevention system includes a control box housing a control circuit. The control circuit includes at least one alarm and a power outlet adapted for receiving the electrical plug of the washing machine. A water level sensor, such as a float switch, is in communication with the control circuit. A ground fault circuit interrupter is in electrical communication with the control circuit. The ground fault circuit interrupter provides interruptible electrical power to the control circuit and the washing machine. The electrical power is interrupted if a control signal is generated by the water level sensor responsive to a flood.

This invention provides a system and method for printing continuous web and feeding ink to printing pens (or cartridges) that employs an array of interleaved ink-jet pens that are arranged to receive bulk ink through a manifold. The manifold and pens are mounted on a fixed array suspended over the web feed path. The manifold includes a plurality of self-sealing quick-disconnect couplings that each serve a discrete ink-jet pen. The pens lay down ink in a registered manner across the full width of the web. The pens are organized into two parallel, multi-pen arrays that are each diagonally oriented with respect to the feed direction. The feed path allows for duplex printing with a second web-side's array located on a lower level of the device, generally beneath the first-side's array. Duplex printing is facilitated due to its inherent length of the feed path. The printed part of the web is free of contact over predetermined lengths that ensure sufficient time for the drying of ink. Each pen is interconnected with a connection to a respective manifold that maintains a vacuum so as to prevent seepage of ink from the pen nozzles. The vacuum is maintained by a draw pump, while ink is continuously provided to the manifold via a float switch in a pressure regulator. The regulator is fed by a bulk ink supply using a feed pump. A check-valve standpipe on each manifold assists in removing any trapped air from the system, thus assisting in maintaining the vacuum.

A bath apparatus for bathing a body part, such as feet, includes a bath chamber for containing fluid and receiving the user's feet therein. The bath apparatus includes a heater for heating the bath chamber fluid, and a fluid pump for directing streams of water into the bath chamber to massage the user's feet. A float switch is provided so that the heater and the fluid pump only operate if there is an adequate amount of fluid in the bath chamber. The bath apparatus also includes a selection device disposed within the bath chamber, that is configured to be actuated by the user's feet when they are submerged within the bath chamber fluid. This provides a higher water pressure only after the feet are disposed within the bath chamber, thereby reducing the likelihood that water will be expelled from the bath chamber.

A magnetically actuated float switch for turning on and off an electrical load device which includes a mounting member, a moveable bracket member which is attached to the mounting member and which is moveable between a first bracket position and a second bracket position by an external force. The moveable bracket member further has a first magnetic end and a second magnetic end which define a space therebetween. The first magnetic end and second magnetic end are oriented in a repelling arrangement. Insertion of a magnet in the space between the magnetic ends of the bracket results in the moveable bracket being moved from the first position to the second position. The moveable bracket member is operatively arranged to change the state of a switch between a first and second state. The switch is in turn operably arranged to change the state of an electrical load device between an on state and an off state.

A system for sampling air in a controlled environment that includes air sampling devices at different locations within the controlled environment. A controller is provided at a location outside of the controlled environment and in separate air flow communication with the air sampling devices via separate first vacuum tubes, the controller having a manifold configured to separately control a rate of air flow from the air sampling devices to the controller via each of the separate first vacuum tubes and to selectively direct the air flow from each of the separate first vacuum tubes to one or more second vacuum tubes. An alarm is automatically activated at a location inside the controlled environment by one or more of the flow switches when the rate of air flow measured at one or more of the flow switches deviates from a desired value by a predetermined amount.

The invention relates to a stratification oil production logging instrument of a low-yield liquid oil well, mainly solving the problem that the existing logging instruments can not overcome degassinginfluence, causing bigger deviation of a measurement result. The invention is characterized in that a circuit barrel (1) is connected with a working barrel (2), a lower end-reducing current collectorcenter cylinder (3), an inner barrel (7), a support bar (4), a current collector drive device (5), a turbine flowmeter (6), a current collecting umbrella (9), a float switch (15), a booster spring (16), an oil-water interface detection array electrode (17) and a gas phase distributary channel (8), wherein the working barrel (2) is provided with an oil-water phase current collecting outlet (12) anda gas phase current collecting outlet (13), and the current collector center cylinder (3) is provided with a gas phase separating inlet (14) and an oil-water phase current collecting inlet (18). Thestratification oil production logging instrument of the low-yield liquid oil well can automatically control gas phase separation, thereby eliminating gas phase influence and reducing the deviation ofthe measurement result.

This invention provides a system and method for printing continuous web and feeding ink to printing pens (or cartridges) that employs an array of interleaved ink-jet pens that are arranged to receive bulk ink through a manifold. The manifold and pens are mounted on a fixed array suspended over the web feed path. The manifold includes a plurality of self-sealing quick-disconnect couplings that each serve a discrete ink-jet pen. The pens lay down ink in a registered manner across the full width of the web. The pens are organized into two parallel, multi-pen arrays that are each diagonally oriented with respect to the feed direction. The feed path allows for duplex printing with a second web-side's array located on a lower level of the device, generally beneath the first-side's array. Duplex printing is facilitated due to its inherent length of the feed path. The printed part of the web is free of contact over predetermined lengths that ensure sufficient time for the drying of ink. Each pen is interconnected with a connection to a respective manifold that maintains a vacuum so as to prevent seepage of ink from the pen nozzles. The vacuum is maintained by a draw pump, while ink is continuously provided to the manifold via a float switch in a pressure regulator. The regulator is fed by a bulk ink supply using a feed pump. A check-valve standpipe on each manifold assists in removing any trapped air from the system, thus assisting in maintaining the vacuum.

The invention provides a condensate water discharging method. According to the deformation amount of an elastic assembly during refrigerating running of an air conditioner, the liquid level height ofcondensate water in a water receiving disk is calculated; and according to the size comparison result of the liquid level height and a preset liquid level, a water discharging pump is controlled to run or alarming prompt of a fault of the water discharging pump is output. The invention further provides the air conditioner and a storage medium. According to the condensate water discharging method,due to the deformation amount of the elastic assembly fixing the water receiving disk, the liquid level height of the condensate water in the water receiving disk is calculated, and therefore the water discharging pump is controlled to run or the alarming prompt is output, the situation that when a water level float switch of an existing water discharging pump is stuck by foreign matter, the waterdischarging function cannot be achieved, and consequently overflowing of the condensate water and internal unit water leaking are caused is avoided, and the running reliability of the air conditioneris improved.

A reverse osmosis negative-ion water dispenser comprising a PP filter element, a granular active carbon filter element and a compressed active carbon filter element inside a housing; a low pressure switch, booster pump, an inlet solenoid valve, a RO filter bottle, a RO membrane and two water outlets for concentrated water and pure water respectively are also provided, wherein the water outlet for concentrated water is connected with a flush solenoid valve and a waste water proportioner assembly, the water outlet for pure water is connected with a storage tank through a high pressure switch and a float switch; the storage tank is provided with a high-low level three-line water level switch and connected to a combined hot and cold exchange tank. A negative-ion generating device comprising a solenoid valve, a fast heating equipment and a negative-ion filter device is provided to generate negative-ion.

A system and method for sampling air in a controlled environment that includes two or more air sampling devices at different locations within the controlled environment. A controller is provided at a location outside of the controlled environment and in separate air flow communication with each of the two or more air sampling devices via separate first vacuum tubes, the controller having a manifold configured to separately control a rate of air flow from the two or more air sampling devices to the controller via each of the separate first vacuum tubes and to selectively direct the air flow from each of the separate first vacuum tubes to one or more second vacuum tubes. A vacuum source is provided at a location outside the controlled environment and in air flow communication with the controller via the one or more second vacuum tubes, the vacuum source providing suction and being controlled by the controller to generate the air flow through each of the first vacuum tubes. And, a flow switch for each of the two or more air sampling devices is provided at a location between a corresponding air sampling device and the vacuum source, each of the flow switches being configured to separately measure and control the rate of air flow through a corresponding first vacuum tube. An alarm is automatically activated at a location inside the controlled environment by one or more of the flow switches when the rate of air flow measured at one or more of the flow switches deviates from a desired value by a predetermined amount.

A float switch of a humidifier at least includes a main body, a water tank and a float switch. The main body has a base located at a bottom and provided with a water tank groove and a water basin having a projected portion formed at a bottom. The water tank possesses a water outlet with plural ribs to engage with a float, a circumferential wall used to combine with a protective hood of the float switch, and a space formed between the water outlet and the circumferential wall for containing the float. The float switch is set between the water tank and the water basin, used to automatically fill water in the water basin by means of the float. When the water tank is separated from the main body, a compressing end of a pressing plate is to push up the float enabling a water stopper to seal the water outlet to prevent water form leaking outside.

A one-piece liquid-level float switch housing and drain line assembly for use with a collection tray or pan to collect condensate and shut off the source of condensate production when it exceeds a pre-established threshold level. The assembly is configured for rapid connection through a pre-formed drain line opening in the perimeter wall of a condensate collection tray / pan to place the deployable float body within its housing in a level orientation relative to the tray / pan without additional leveling adjustment. The housing has an open bottom and vertically-extending slots providing fluid inlet, debris blocking, and air venting functions for enhanced float body operation. The condensate pan / tray used with the assembly has a nesting configuration that includes a perimeter wall with varying combinations of gussets, curved ribs, angled corner configurations, and support shelves, and a central bottom surface with raised patterns, all of which strengthen the tray / pad during installation and use.

A tank level monitoring system with wireless transmission capability. The monitoring system includes a wireless tank monitor for level sensing and connected to one or more float level switches. The system regularly measures the level of fluid in a tank, but may change the measurement rate based upon the float switch. This system actively monitors conditions of a tank and alerts a user when conditions exceed a predetermined parameter.

A float assembly light indicator for use in detecting water levels within a container, such as a Christmas tree stand, includes a float housing having multiple float switches therein and are operably connected to a remotely locatable water level light indicator.

The invention discloses a collector capable of automatically controlling gas separation for measuring a production profile of an oil well. The main working parts of the collector comprise an oil-water collecting channel (2), a gas separation outlet (3), a gas separation channel (4), a collecting umbrella (5), a gas separation inlet (6), a float switch (7), a booster spring (8) and an oil-water phase collecting inlet (9); the collector structurally comprises a gas-phase separation cavity, the gas separation channel, the float switch for controlling the gas-phase separation, and an oil-water collecting channel. By separating the gas phase under the controllable conditions with the invention, the simple two-phase flow substitutes for the complex tri-phase flow, therefore, the measurement results are more accurate.

The invention discloses a liquid filling machine and belongs to the field of filling equipment. The liquid filling machine comprises a liquid inlet pipe and a filling machine liquid storage pot, wherein the liquid inlet pipe passes through the upper end of a stander and is directly connected with the upper end of the filling machine liquid storage pot; and a filling machine liquid storage pot floating switch and a plurality of groups of air cylinders are arranged in the filling machine liquid storage pot. In the liquid filling machine, one air cylinder controls one filling head; an equal height counting mode of the inner liquid level of the liquid storage pot is not required; a constant liquid level cup type stable liquid level is adopted, so one filling head needs only one air cylinder, and the counting and filling precision is high; the filling machine is easy to process and the number of output points of an industrial control computer is small, so the cost can be reduced by over 1 / 2; the liquid filling machine is durable, the liquid level is easy to control, and the reliability is enhanced; backflow control is not needed, so the power is saved; the liquid filling machine is easy in maintenance, good in sealing property and safe; liquid is hard to volatilize during filling; the filling precision is enhanced and the filling speed is high; and the liquid filling machine can be widely applied to rotary gas-free liquid filling machines, discharging gas-free liquid filling machines and the like.

The invention discloses an automatic supply system for high-rise building construction and fire-fighting water, which is characterized in that: the water inlet device includes a water storage tank, an electromagnetic valve, a water level float switch and a float valve; The water inlet pipe of the water tank is connected; the water storage tank is installed at the water inlet end of the high-pressure water pump, and the water level of the water storage tank is adjusted according to the water consumption; since the water level float switch is floating in the water storage tank, it can realize automatic water supply of the water storage tank with the solenoid valve; the high pressure of the water supply device The water pump supplies water to the outlet pipe and pressurizes it so that the water pressure in the outlet pipe reaches the set pressure, then uses the check device and the pressure maintaining device to keep the water pressure in the outlet pipe at a high pressure; Start the water supply and pressurize until the water pressure in the pipe reaches the set value, and the water pump will stop automatically. The water pump of the invention automatically starts to work according to needs, which not only reduces the consumption of electric energy, but also can effectively protect the equipment.

A float switch made from plastic and impervious to corrosion, with improvements over the prior art including a more responsive operation resulting from use of a wide float switch body and a closely fitting housing that allow rapid shut-off of condensate production after collection of only a very small amount of fluid, a small housing dimension for easy installation in the small areas used for air conditioning system air handlers, a removable bottom cap for easy debris removal as well as float switch body adjustment for changing conditions, a housing design that allows operation without air vent holes in the housing, and anti-rotation features that stabilize the level orientation of the float switch body needed for proper operation after installation. By its quick and reliable response, the switch promotes use and longevity of energy efficient air conditioners without concern for the increased condensate produced, protecting the environment and energy resources.

An ice-making water tank 30, which has a main body 50, is disposed generally below ice-making plates 28. A deep portion 51 of smaller cross-section is formed in the main body 50. The discharge inlet 56 of an overflow pipe 55 is disposed in the central portion of the water surface in the main body 50, and the height of the discharge outlet is set at the upper limit H of the level of the ice-making water. A float switch 57, which sets the lower limit of the water level, is disposed in the central portion of the water surface in the deep portion. Thus, water levels which are almost equal to the prescribed upper limit H and lower limit L can be set even if the ice-making water tank is mounted at an inclined angle.

A method of operating an ice making machine efficiently provides clean ice blocks. A special water-discharge operation which is performed when an ice storage switch (TS) provided at an ice storage chamber (16) storing ice blocks (M) separated in a deicing operation detects that the ice storage chamber (16) is full of ice discharges the ice-making water from the ice-making water tank (20) via water discharge means (44) by releasing a water discharge valve (DV) provided at the water discharge means (44). Then, the special water-discharge operation is terminated by closing the water discharge valve (DV) when a preset duration time (T) passes after a float switch (FS) provided at the ice-making water tank (20) detects an ice-making completion water level (LWL) of the ice-making water in the ice-making water tank (20) after discharge of the ice-making water to outside is started.

A high-side semiconductor switch control circuit for switching a positive supply voltage is provided, having a circuit to provide a drive voltage for the high-side semiconductor switch, a driver circuit for driving the high-side semiconductor switch based on the control circuit, wherein both the circuit for providing the drive voltage as well as the driver circuit operate in relation to a floating switching point, an input circuit portion that receives a control signal related to ground, and a level shift circuit portion that is connected between the input circuit portion and the driver circuit portion and set up so as to transform the control signal related to ground into a floating voltage level for the driver circuit portion.