Washing device, high-pressure washing device, and adapter

Patent metadata

Field	Value
Publication number	US-2016016207-A1
Application number	US-201314378705-A
Country	US
Kind code	A1
Filing date	Feb 14, 2013
Priority date	Feb 17, 2012
Publication date	Jan 21, 2016
Grant date	—

Abstract

A high-pressure washing device ( 1 ) includes a nozzle ( 31 ). The nozzle ( 31 ) is configured to eject a high-pressure cleaning liquid. The cleaning liquid ejected from the nozzle ( 31 ) has a pulsation pressure. A variation rate of the pulsation pressure is more than or equal to 20%.

First claim

1 . A high-pressure washing device comprising:
A motor; and a nozzle configured to eject a high-pressure cleaning liquid, wherein the cleaning liquid ejected from the nozzle has a pulsation pressure between a maximum pressure and a minimum pressure 20% to 60% smaller than the maximum pressure, and a variation rate of the pulsation pressure is more than or equal to 20%, wherein a rotating speed of the motor is controlled such that the maximum pressure and the minimum pressure are alternately generated.

2 . The high-pressure washing device according to claim 1 , wherein the maximum pressure is more than or equal to 3.0 Mpa, and the minimum pressure is less than or equal to 2.4 Mpa.

3 . The high-pressure washing device according to claim 1 , wherein a total amount of the cleaning liquid ejected from the nozzle while an ejection pressure of the cleaning liquid is more than or equal to 2.4 Mpa is more than or equal to three times as large as a total amount of the cleaning liquid while the ejection pressure is less than 2.4 Mpa.

4 . The high-pressure washing device according to claim 1 , further comprising:
a reciprocating pump configured to be driven by the motor to eject the high-pressure cleaning liquid from the nozzle, the reciprocating pump including a single reciprocating member,
wherein a drive of the reciprocating pump causes the cleaning liquid to be pulsated.

5 . The high-pressure washing device according to claim 4 , further comprising a battery configured to supply electric power to the motor, the battery being configured to output more than or equal to 200 W electric power.

6 . The high-pressure washing device according to claim 5 , wherein the battery is usable for a power tool.

7 . The high-pressure washing device according to claim 5 , wherein the battery has a weight less than or equal to 2.0 kg.

8 . A high-pressure washing device comprising:
a nozzle configured to eject a high-pressure cleaning liquid; a motor; and a drive section including a pump, wherein the pump is a reciprocating pump having one or two reciprocating members driven by the motor.

9 . The high-pressure washing device according to claim 8 , wherein the motor has an output shaft extending in a first direction and the reciprocating member defines an axis extending in a second direction, the first direction being substantially perpendicular to the second direction.

10 . The high-pressure washing device according to claim 9 , further comprising a battery configured to supply electric power to the motor,
wherein the output shaft and the axis are located on a plane, the plane defining a rectangular region having four sides, each of the output shaft and the axis comprising one of the four sides, wherein the battery is disposed at the rectangular region as viewed from a direction orthogonal to the plane.

11 . The high-pressure washing device according to claim 10 , wherein the driving section further comprises a housing for accommodating therein the motor, the reciprocating pump, and the battery, the nozzle being connected to the housing,
the high-pressure washing device further comprising a tank detachably mounted to the drive section, the tank being configured to accommodate therein the cleaning liquid.

12 . The high-pressure washing device according to claim 8 , wherein an ejection pressure of the cleaning liquid ejected from the nozzle is pulsated within a prescribed range.

13 . The high-pressure washing device according to claim 8 , wherein the reciprocating pump has one reciprocating member.

14 . The high-pressure washing device according to claim 8 , wherein the drive section further comprises a crank configured to be eccentrically driven by the motor.

15 . The high-pressure washing device according to claim 8 , wherein the cleaning liquid ejected from the nozzle has a pulsation pressure, and a variation rate of the pulsation pressure is more than or equal to 20%.

16 . The high-pressure washing device according to claim 8 , wherein the cleaning liquid ejected from the nozzle has a pulsation pressure, and a variation rate of the pulsation pressure is less than or equal to 60%.

17 . The high-pressure washing device according to claim 8 , further comprising a battery configured to supply electric power to the motor to drive the motor.

18 . The high-pressure washing device according to claim 8 , further comprising:
a housing configured to accommodate therein the motor and the pump; and a tank configured to accommodate therein the cleaning liquid, the tank being detachably accommodated in the housing.

19 . The high-pressure washing device according to claim 8 , wherein the pump is configured to increase an ejection pressure of the cleaning liquid from the nozzle more than or equal to a pressure of waterworks.

20 . The high-pressure washing device according to claim 8 , wherein the drive section further comprises a compression section configured to accumulate the cleaning liquid, the reciprocating member being configured to reciprocatingly move so as to change a volume of the compression section,
wherein the pump further includes: a casing for accommodating the reciprocating member; and a first seal member provided between the casing and an outer peripheral surface of the reciprocating member.

21 . A high-pressure washing device comprising:
a nozzle configured to eject a high-pressure cleaning liquid; a motor; and a pump configured to be reciprocatingly driven by the motor to convey the cleaning liquid to the nozzle, the pump being configured to instantaneously eject from the nozzle the cleaning liquid having a pressure more than or equal to a pressure of waterworks.

22 . The high-pressure washing device according to claim 21 , wherein the pump is configured to increase the pressure of the cleaning liquid more than or equal to 3.0 Mpa, the nozzle ejecting the increased cleaning liquid.

23 . The high-pressure washing device according to claim 21 , wherein the pump includes a plunger having a substantially cylindrical shape, the plunger having a diameter of 5 to 20 mm, a stroke of 3 to 10 mm, and a number of reciprocation of 1000 to 5000 rpm.

24 . The high-pressure washing device according to claim 21 , wherein the cleaning liquid ejected from the nozzle has a pulsation pressure, and a variation rate of the pulsation pressure is more than or equal to 20%,
wherein the pump includes a plunger configured to reciprocatingly move, wherein a total amount of the cleaning liquid while the variation rate is more than or equal to 20% is substantially three quarter of a total amount of the cleaning liquid during one reciprocating motion of the plunger.

25 . A washing device configured to eject a cleaning liquid from a nozzle, the washing device comprising:
a handle portion; a drive section configured to be driven so as to eject the cleaning liquid from the nozzle; and a tank accommodating portion configured to accommodate a tank therein; the tank accommodating portion being disposed below the handle section, wherein the drive section is disposed below the tank accommodating section; and the handle portion, the tank accommodating portion, and the drive section are arranged from top to bottom in this order.

26 . The washing device according to claim 25 , wherein the tank accommodating portion is formed with an opening through which the tank is attached thereto,

Assignees

• Hitachi Koki Kk

Inventors

• Horie Noriyuki
• Kamimura Junichi
• Satou Shinichirou
• Nishikawa Tomomasa

Classifications

• F16L25/0018

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• B08B3/026 Primary

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• B08B2203/0223

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