A pump driven coolant filling device and corresponding methods are configured for adding liquid coolant to a coolant circuit for removing heat. The device and methods may be used with liquid coolant circuits on electronic components, or in other industries that utilize liquid coolant. The device includes a base having an integrated pump for circulating coolant to the cooling circuit. A disposable container of coolant may be attached to the base using a threaded connection. The device includes a handle with a switch for controlling operation of the pump in some embodiments. A coolant circuit includes quick connect couplings configured for attachment to corresponding hoses extending from the base. During use, a cooling circuit may continue operation while adding coolant to the cooling circuit using the device.

A multipurpose inflation pump is provided. The multipurpose inflation pump includes a housing provided with a device cavity and a storage cavity which is configured to place an accessory. The device cavity is provided with a first inflation unit and a second inflation unit, and an inflation pressure of the first inflation unit is lower than an inflation pressure of the second inflation unit. The multipurpose inflation pump can not only rapidly inflate and deflate an inflatable bed, an inflatable boat, etc., but also provide higher inflation pressure to inflate an automobile tire, thus combining multiple uses in a single machine and helping consumers save cost.

A system for inflating an inflatable device includes a ducted fan aspirator coupled to the inflatable device and having a fan and a fan motor configured to drive the fan to direct first air into the inflatable device. The system further includes a compressor aspirator coupled to the inflatable device and having a compressor and a compressor motor configured to drive the compressor to direct second air into the inflatable device.

A blower including a body having a length, L, as measured between front and rear ends of the blower in a direction of airflow through the blower; and a fan including a plurality of blades configured to generate airflow through the blower, wherein the blades are spaced apart from the rear end of the blower by at least 0.4 L. In an embodiment, the fan is rotatably biased by a motor spaced apart from the rear end of the blower by at least 0.5 L. In another embodiment, at least 75% of the fan is disposed within an airflow outlet tube of the blower. In yet another embodiment, the blower further comprises a handle, and wherein the fan is disposed downstream of the handle, and wherein the fan is spaced apart from the handle by at least 0.08 L, as measured in the direction of airflow.

A blower includes a motor, a plurality of fans coaxially arranged in multiple stages, a housing having an inlet opening and a discharge opening, and a battery mounting part to which a battery is removably mountable. A rotational speed of the motor is within a range of 50,000 rpm to 120,000 rpm. A diameter of each of the fans is within a range of 30 mm to 70 mm. An area of the discharge opening is within a range of not less than an area of a circle having a diameter of 2.5 mm and not more than an area of a circle having a diameter of 10 mm. A blowing force of air discharged through the discharge opening is within a range of 1 N to 3 N.

An air pump control system includes a first air pump and a second air pump for inflating or deflating an inflatable body; a switching driving device connected to the air pumps for driving the switching between two or more air passages; and an air pressure sensor for detecting an internal air pressure value of the inflatable body, and sending an internal pressure signal to a central control unit, which is connected to the air pumps, the switching driving device, and the air pressure sensor. The central control unit sends a driving signal to the switching driving device to activate the switching between the air passages, and sends an activation or deactivation signal to the air pumps according to the detected internal air pressure value and a pre-set inflating air pressure value, to activate or deactivate the air pumps. An air pump control method is also disclosed herein.

The present disclosure discloses an electric dust blower which includes a shell, a control panel, a battery module, a fan, an illumination lamp, and air outlet nozzles, where the shell includes two half shells capable of being spliced together left and right; the battery module is disposed at a lower portion of a mounting chamber; the fan is disposed at a rear portion of an air chamber and is close to an air inlet; the illumination lamp is mounted in a mounting hole and exposed out of a front end face of a main body; and the air outlet nozzles are detachably mounted at and connected to an air outlet.

A high and low-pressure integrated air pump includes a single housing including an air inlet and an air outlet. A high-pressure pump is disposed within the housing and in fluid communication with the air inlet, and uses a first outlet passage to discharge to the air outlet. A low-pressure pump is also disposed within the housing and in fluid communication with the air inlet, and uses a second outlet passage to discharge to the air outlet.

A blower with assembly performance that is improved by downsizing of a housing resulted from unitization of a blower fan and a motor is provided. In a blower including a housing configured to house the motor and the blower fan therein and to include an air intake port sucking the air flow thereinto and a tubular air exhaust port configured to exhaust out the air flow toward a front side direction, the motor and the blower fan as an assembly embedded into a motor case are housed in a main body section of a housing. A brushless DC motor is adopted as the motor, and a motor circuit board is mounted on a front side of the motor. A semiconductor switch element is mounted on the motor circuit board, and the motor is driven at 40,000 revolutions/second or more.

A neck fan includes: an inner shell, disposed near the neck; an outer shell, connected to the inner shell and disposed opposite to the inner shell and away from the neck. The outer shell and the inner shell cooperatively define a receiving space; a plurality of fan assemblies. Each fan assembly is received in the receiving space and connected to the inner shell and the outer shell. The inner shell defines a plurality of air inlets, located near and facing towards the neck. At least a part of the receiving space serves as an air duct communicating with the air inlets. Each fan assembly corresponds to the air inlets. Each fan assembly is configured to intake air from an outside of the neck fan through the air inlets and to further drive the air to flow into the air duct.