Motor pump unit for handheld high-pressure washing machine and handheld high-pressure washing machine

Abstract

The invention discloses a handheld high-pressure washing machine. A motor pump unit comprises a micromotor and a mini pump. The motor comprises a motor shell, a motor shaft, a rotor and a stator ironcore. The rotor is mounted on the motor shaft, the stator iron core is located outside the rotor, and the rotor and the stator iron core are arranged in the motor shell. The mini pump comprises a pumpshell, a pump water inlet and a high-pressure water outlet, wherein the pump water inlet and the high-pressure water outlet are formed in the pump shell. The motor shell is provided with a sealing cavity I and an inner shell located on the inner ring of the sealing cavity I, and the stator iron core is tightly attached to the inner shell to form a heat conduction passageway. The motor shell is provided with at least one cooling passageway I, a water inlet I and a water outlet I. The water inlet I is connected with an external water source, and the water outlet I communicates with the pump water inlet. The pump shell is provided with at least one cooling passageway II, a water inlet II and a water outlet II. The water inlet II is connected with the external water source or the water outletI, and the water outlet II is connected with the pump water inlet. The motor pump unit and the handheld high-pressure washing machine have the beneficial effects that the waterproof grade of the motor and the whole machine can reach IPX7 or even higher, and the machine is safer and more reliable.

Description

technical field [0001] The invention belongs to the technical field of hand-held washing machines, and in particular relates to a motor pump unit for a hand-held high-pressure washing machine and the hand-held high-pressure washing machine. Background technique [0002] A high-pressure cleaner is a device that uses water or a mixture of detergents as the cleaning medium and uses high-pressure water to clean the surface of objects. The high-pressure cleaner can be used to clean cars, courtyards, floors, railings, doors and windows, etc. It is relatively easy to use. Efficient and convenient, its main components are a spray gun and a host, the host includes a motor, a pump and a battery or an external power cord, the spray gun and the host are connected by a water pipe, the spray gun is responsible for forming water flows of different shapes according to actual needs, and the host is responsible for transferring water from the municipal Tap water or buckets are converted into ...

AI Technical Summary

Problems solved by technology

Patent CN205570600U also discloses a low-pressure cleaning machine, not a hand-held high-pressure cleaning machine. Its working pressure cannot reach or exceed the 2.5MPa pressure required by the high-pressure cleaning machine. CN205570600U does not disclose any motor cooling and waterproof sealing solutions. What is provided is not a hand-held high-pressure washer either. From the accompanying drawings of the CN205570600U manual, it can be seen that there is a cooling air vent at the tail of the motor. A vent must be left at the corresponding position on the casing, and its waterproof level cannot meet the waterproof level requirements of a hand-held high-pressure washer. And there are defects and deficiencies such as high noise and non-waterproof

[0005] As a hand-held washing machine, the high-speed operation of the motor and pump will bring about a sharp rise in temperature, which is not only transmitted to the user through the casing, the high temperature will seriously affect the comfort of use, and affect the operating efficiency and life of the machine

At the same time, the noise generated by the open casing, motor operation and fan blade rotation also directly affects the user's operating comfort.

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