A two-speed motor is mounted in a housing with an end cap. The end cap has a tubular structure defining an interior space, including an open first end connectable to the motor casing. The second end includes at least one planar surface and at least one air grate configured to permit airflow into and/or out of the interior space. A dual speed pump controller includes a motor controller for operating the dual speed motor. The controller includes an operating speed circuit for operating the motor in one of a first speed or a second speed, the first speed being greater than the second speed; an event circuit for operating the motor at the first speed before a predetermined event and operating the pump at the second speed after the predetermined event.

An air vent assembly for a vehicle interior component configured to provide air flow at an outlet from a ventilation system may comprise a housing providing an air flow passage, a cover, a vane assembly to adjust air flow direction at an outlet, a valve assembly to adjust air flow volume from an inlet, a shaft within the passage and an adjuster to adjust air flow direction and/or volume. The vane assembly may comprise a set of vanes to rotate at a ball joint or universal joint to adjust air flow direction. The shaft may be coupled to the valve assembly by a gear mechanism to adjust air flow volume. The assembly may comprise a light module to provide illumination at the outlet. The light source may illuminate a light-transmissive element within the cover. The vane assembly may comprise the light transmissive element.

A control method and device for an air conditioner outdoor unit, an outdoor unit and an air conditioner are provided. The outdoor unit has a compressor, a first sensor for detecting an air exhaust pressure of the compressor, and a second sensor for detecting an air return pressure of the compressor. According to the method, a target pressure value is determined; an air exhaust pressure value detected by the first sensor or an air return pressure value detected by the second sensor is periodically obtained as a first pressure value; and the frequency of the compressor is adjusted according to the first pressure value and the target pressure value.

An air-conditioning apparatus having a refrigerant circuit, in which a compressor, an outdoor heat exchanger, an expansion device, and an indoor heat exchanger are connected by a pipe and refrigerant circulates in the pipe, includes an indoor fan configured to supply an indoor air to the indoor heat exchanger, and a controller configured to control the compressor and the indoor fan. The controller is configured to run the compressor at a start of a cooling operation, start running the indoor fan at less than a set minimum wind velocity after a first set time has elapsed since the compressor started operating, run the indoor fan at the set minimum wind velocity after a second set time has elapsed since the indoor fan started operating at less than the set minimum wind velocity, and run the indoor fan at a set wind velocity after a third set time has elapsed since the indoor fan started operating at the set minimum wind velocity.

A system is provided and includes a first controller, a non-transitory computer-readable medium and a second controller. The first controller is configured to control operation of at least one compressor circuit including one or more compressors. The non-transitory computer-readable medium is configured to store instructions of a stage profiler for execution by the controller. The instructions include: determining a target system capacity profile for the at least one compressor circuit; determining system stage capacities for stages of the at least one compressor circuit; selecting some of the system stage capacities based on the target system capacity profile to provide an available system capacity profile; generating modulation information based on the available system capacity profile and a load request signal; and controlling operation of the one or more compressors based on the modulation information and according to the available system capacity profile.

An electronic expansion valve is provided including: a valve body provided with a first port and a second port, a first cavity being defined in the valve body and being in fluid communication with the first port, the valve body also being provided with a valve port between the second port and the first cavity; a drive mechanism including a rotor having a rotor screw and a stator; a valve spindle assembly at least partially disposed in the valve body and being capable of operatively cooperating with the rotor screw for reciprocating motion to adjust the degree of opening of the valve port; and a second cavity isolated and sealed off from the first cavity, wherein a balancing passage is formed in the rotor screw and the valve spindle assembly to enable the second cavity to be in fluid communication with the second port via the balancing passage.

Heat blower system includes: hair dryer that has housing, fan, and heater; and program that controls hair dryer. Program has a step of obtaining at least one outdoor environment information among an outdoor temperature, an outdoor humidity, an outdoor wind speed, a day length, and an ultraviolet ray intensity. Program further has a step of calculating at least one operational condition of an air volume or an air temperature of hair dryer, based on the obtained outdoor environment information. According to the present aspect, outdoor environment information such as the outdoor temperature, the outdoor humidity, the outdoor wind speed, the day length, and the ultraviolet ray intensity can comprehensively be obtained to adjust operational conditions of hair dryer, appropriately.

An air conditioner at least including a controller, a first fan unit, and a second fan unit arranged parallel to the first fan unit is disclosed. The controller performs a parallel operating control procedure, including a first control mode and a second control mode, to the first fan unit and the second fan unit respectively. When operating under the first control mode, the controller adjusts the rotating speed of one of the first fan unit and the second fan unit based on a first standard air volume, so the two fan units output the air volume equal to or approximate to the first standard air volume. When operating under the second control mode, the controller controls the rotating speed of both the first and second fan units according to a second standard air volume, so the two fan units output the same air volume.

There is provided a perpendicular speed reducer including an input shaft, a reduction mechanism that reduces a speed of rotation of the input shaft, an output shaft that outputs the speed-reduced rotation, and a casing that accommodates the reduction mechanism. The input shaft and the output shaft are perpendicular to each other. The casing includes a bearing hole formed on a first side surface to support the output shaft, a fin provided along a direction toward the bearing hole, and a groove portion provided along an axial direction of the output shaft on a second side surface adjacent to the first side surface.

An Ionization unit (7) for cleaning air in a room (1) with a ceiling (3) and a floor (5), comprising an ionizer (19) configured to electrically charge particles in the air; and a support unit (13) configured to enable the ionization unit (7) to be positioned at a distance of at least 50 centimeters above the floor (5) of the room (1), wherein the support unit (13) allows the ionization unit (7) to travel within the room (1) while being distanced from the floor (5).