A hybrid thermostat valve for a machine includes an inlet port, a first outlet port and a second outlet port. A sealing member located between the inlet port and the first outlet port includes holes providing a first channel of fluid communication between the inlet port and the first outlet port. A valve element located between the inlet port and the first outlet port selectively allows fluid communication between the inlet port and the first outlet port through the first channel. A bypass valve element located between the inlet port and the second outlet port selectively allows fluid communication between the inlet port and the second outlet port. Further, an actuator selectively controls position of the sealing member to provide a second channel of fluid communication between the inlet port and the first outlet port based on a current work cycle segment being performed by the machine.

The cooling water temperature control device includes a thermo valve 2 that opens a main flow passage R1 when the temperature of a sensed region R1a in the main flow passage R1 reaches or exceeds an operating temperature set in advance, a sub-valve 3 that opens and closes a sub-flow passage R2 bypassing the thermo valve 2, and a control unit 6 that opens the sub-valve 3 when the temperature of the cooling water on an upstream side of the thermo valve 2 is a predetermined temperature. One end on the upstream side of the sub-flow passage R2 is connected to the sensed region R1a in the main flow passage R1 or to a downstream side of the sensed region R1a, and the operating temperature of the thermo valve 2 is set to be equal to or lower than the predetermined temperature.

An air flow controller for an air cleaner and an air cleaner are provided. The air flow controller may include a fan, and a housing, the fan being provided in the housing and the housing being movable from an initial horizontal position in which the air flow controller directs air flow in a vertical direction to an inclined position in which the air flow controller directs air flow in a diagonal direction.

A pneumatic control converter, preferably acting as a pneumatic thermostat, includes a pneumatic section, and electronic section and a piezo electric linkage section. A piezo electric rotary motor drives a rotary cam, with a cam follower linked via a W-shaped flexure linkage to bias the ball nozzle which controls the pneumatic control output pressure. The input to the piezo electric rotary motor is an electrical signal dependent upon electronically sensed pressure relative to the programmed set point. The pneumatic control converter consumes little electrical energy and is preferably battery powered, and the pneumatic control output pressure can be maintained even in the absence of electric power.

A thermostatic mixing valve for mixing cold water and hot water and for setting a mixed water temperature, having an electric motor that is controllable by a control unit and acts via a gear stage on a valve body, which is stroke-adjustable over a setting range and with which the mixing ratio between hot and cold water can be varied depending on a target mixed water temperature, presettable on the user side, and having a sensor element for detecting at least one set position in the setting range of the thermostatic mixing valve. The gear stage has a linearly adjustable linear displacement element, arranged rotationally fixed and provided between the electric motor and the valve body, and the sensor element works together with the linear displacement element to detect the set position.

A thermostatic actuator for a radiator valve includes a thermostat mechanism configured to passively open the valve when an environmental temperature is less than a set point and to close the valve when the temperature is greater than the set point. A set point adjustment mechanism draws power from a power supply to selectively drive unitary movement of the thermostat mechanism to adjust the set point. Multiple actuators are used in a zoned radiant heating system in which a controller is operatively connected to the set point adjustment mechanism of each actuator to selectively transmit a control signal to actuate the set point adjustment mechanism to drive unitary movement of the respective thermostat mechanism to adjust the respective set point.

Disclosed is a thermostatic, electric storage, water heater for a water supply terminal, which mainly consists of a water storage tank (2), a heating pipe (3), a three-way water valve (16), an electrical control three-way water valve (11), a thermostatic water valve (9) for mixing hot and cold water, and a controller (13), wherein a horizontal end of the three-way water valve (16) is connected to a water inlet pipe of a hot water source, and a lower end thereof is connected to a second water inlet (17) of the electrical control three-way water valve (11). A fifth water inlet (4) on a lower end of the electrical control three-way water valve (11) is connected to a tap-water pipe, and a horizontal end thereof is connected to a third water inlet (12) of the thermostatic water valve (9) for mixing hot and cold water. Temperature signals and water flow signals from the heating pipe (3), the three-way water valve (16) and a water flow sensor (14) provided inside the thermostatic water valve (9) for mixing hot and cold water are transmitted to the controller (13). The electric water heater can quickly obtain continuous and stable constant-temperature hot water.

A hybrid thermostat valve for a machine includes an inlet port, a first outlet port and a second outlet port. A sealing member located between the inlet port and the first outlet port includes holes providing a first channel of fluid communication between the inlet port and the first outlet port. A valve element located between the inlet port and the first outlet port selectively allows fluid communication between the inlet port and the first outlet port through the first channel. A bypass valve element located between the inlet port and the second outlet port selectively allows fluid communication between the inlet port and the second outlet port. Further, an actuator selectively controls position of the sealing member to provide a second channel of fluid communication between the inlet port and the first outlet port based on a current work cycle segment being performed by the machine.

An electronic thermostat control system may include a control duty determination portion outputting PWM duty signal for controlling the coolant temperature according to a coolant temperature, a rising rate of the coolant temperature, an engine speed, a load and a vehicle speed, a driving portion applying a time condition to the PWM duty signal output by the control duty determination portion for controlling outputting interval, and a fault diagnosis portion diagnosing operations of the electronic thermostat by analyzing the signals output by the driving portion and changes of the coolant temperature.

An air flow controller for an air cleaner and an air cleaner are provided. The air flow controller may include a fan, and a housing, the fan being provided in the housing and the housing being movable from an initial horizontal position in which the air flow controller directs air flow in a vertical direction to an inclined position in which the air flow controller directs air flow in a diagonal direction.