Water pump device for electric appliances

Abstract

A water pump device for electric appliances includes a water container, a piston cylinder, and an AC synchronous motor. The piston cylinder includes a piston. The AC synchronous motor drives the piston to reciprocate. The water container supplies water through reciprocation of the piston driven by the AC synchronous motor. The water in the water container enters the piston cylinder for pressurization. The pressurized water enters a heating member of a steam generator to output high temperature and high pressure steam. The water pump device further includes a steam adjustment knob between the clockwise check valve and the piston cylinder. The steam adjustment knob can be turned to drive a cam which is used to change the movement route of the piston, so that the volume of the pressurized water can be adjusted for desired high temperature and high pressure steam.

Description

BACKGROUND OF THE INVENTION[0001](a) Field of the Invention[0002]The present invention relates to a water pump device for electric appliances, and more particularly to one having an AC synchronous motor adapted for domestic or industrial electric appliances, such as a portable steam cleaner, a steam mop, a steam mop cooperated with a vacuum cleaner, or the like.[0003](b) Description of the Prior Art[0004]Domestic or industrial electric appliances, such as a portable steam cleaner, a steam mop, a steam mop cooperated with a vacuum cleaner or the like, adopts the following three ways to pour water into a heating member of a steam generator.[0005]The first way is that the inputted alternating current is rectified through a transformer and the voltage is lowered and stabilized by other electronic components on the circuit board, so that the required voltage and current are inputted to a DC motor for driving a pair of deceleration gears to drive a piston cylinder. Thus, the water in the ...

AI Technical Summary

Benefits of technology

[0010]Thereby, the water pump device drives the AC synchronous motor by alternating current. The water container supplies water by means of reciprocation of the piston which is driven by the AC synchronous motor. The water in the water container passes the inlet pipe and enters the piston cylinder for pressurization. The pressurized water passes the outlet pipe and enters the heating member of the steam generator to output high temperature and high pressure steam. The present invention is different from the prior at. There is no need for electronic components which convert alternating current into direct current, nor deceleration gear boxes. No limescale is remained to cause an obstruction. The AC synchronous motor can be got easily on the market, which is a safe and stable motor. The AC synchronous motor has an appropriate rotation speed for generating enough torsion to direct drive the piston to reciprocate. The AC synchronous motor can be turned clockwise or counterclockwise, so the rotation direction can be changed as desired. When the steam has counter pressure, the AC synchronous motor will change its rotation direction immediately and the link rod of the piston cylinder will be turned in a reverse direction to keep running. This prevents the motor from being jammed because the instantaneous torsion is not enough and avoids any accidents because the current is greatly increased to cause high temperature.

Problems solved by technology

The drawback of this pump device is that the alternating current of the power supply must be transformed into direct current.

This increases the cost and difficulty for assembly, and is not compact.

In this way, it must use complicated and expensive electronic components and circuit to change the voltage of the DC motor so as to change the rotation speed of the DC motor for adjustment of the temperature and volume of the outputted steam.

The electromagnetic pump is expensive and large in size.

The limescale is easy to block the inlet and outlet of the electromagnetic pump, which may result in malfunction of the steam electronic appliance.

In this way, it must use complicated and expensive electronic components and circuit to change the voltage of the electromagnetic pump so as to change the reciprocation speed of the pillar piston in the electromagnetic pump for adjustment of the temperature and volume of the outputted steam.

This way cannot output high temperature and high pressure steam.

There is no pump in the system, so it cannot adjust the temperature and volume of the outputted steam.

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