Washer

Patent metadata

Field	Value
Publication number	US-2016144411-A1
Application number	US-201414899442-A
Country	US
Kind code	A1
Filing date	Aug 7, 2014
Priority date	Aug 9, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

A washer includes: a tank which stores washer fluid; a pump which pressurizes the wash fluid supplied from the tank; a main body including an electric-powered motor which is a driving source of the pump and a battery pack which is a power source of the electric-powered motor; a spray device including a nozzle; and a pressure-resistant hose which connects the main body with the spray device. A discharge pressure (A) of the washer fluid is 0.5 [MPa] or higher and 9.0 [MPa] or lower, and a pressure liquid volume ratio (A/B) which is a ratio of a discharge volume (B) of the washer fluid with respect to the discharge pressure (A) of the washer fluid is 1.8 or larger.

First claim

1 . A washer which pressurizes and discharges washer fluid,
wherein a discharge pressure (A) of the washer fluid is 0.5 [MPa] or higher and 9.0 [MPa] or lower, and a pressure liquid volume ratio (A/B) which is a ratio of a discharge volume (B) [L/min] of the washer fluid with respect to the discharge pressure (A) [MPa] of the washer fluid is 1.8 or larger.

2 . The washer according to claim 1 ,
wherein the discharge pressure (A) is 0.5 [MPa] or higher and 3.0 [MPa] or lower.

3 . The washer according to claim 1 ,
wherein the discharge pressure (A) is the maximum discharge pressure.

4 . The washer according to claim 1 ,
wherein the discharge volume (B) is 1 [L/min].

5 . The washer according to claim 1 further comprising a nozzle including:
a flow inlet into which the washer fluid is flowed;
a discharge outlet from which the washer fluid is discharged; and
a flow path through which the flow inlet and the discharge outlet are communicated to each other,
wherein a minimum value of a diameter of the flow path is 0.9 [mm] or smaller.

6 . The washer according to claim 1 , further comprising:
a main body including a tank which stores the washer fluid, a pump which pressurizes the washer fluid supplied from the tank, an electric-powered motor which is a driving source of the pump, and a secondary battery which is a power source of the electric-powered motor; a spray device including a nozzle; and a tube member which connects the main body with the spray device.

7 . The washer according to claim 6 ,
wherein the secondary battery can supply power of 140 [W] or larger to the electric-powered motor.

8 . The washer according to claim 7 ,
wherein the power supplied to the electric-powered motor by the secondary battery is power obtained when a first conversion efficiency (η1) for converting power of the secondary battery into rotating motion of the electric-powered motor is 50% to 80%.

9 . The washer according to claim 7 ,
wherein power required for driving the pump is 70 [W] or higher.

10 . The washer according to claim 9 ,
wherein the power required for driving the pump is power obtained when a second conversion efficiency (η2) for converting the rotating motion of the electric-powered motor into reciprocating motion of the pump is 50% to 80%.

11 . The washer according to claim 6 ,
wherein the secondary battery can supply power of 20 [Wh] or higher to the electric-powered motor.

12 . The washer according to claim 6 ,
wherein the pump includes single reciprocating member driven by the electric-powered motor, and the discharge pressure is pulsed by the single reciprocating member.

13 . The washer according to claim 12 ,
wherein the discharge pressure is pulsed with a variation rate of 20% or higher.

14 . The washer according to claim 6 ,
wherein the secondary battery is used for an electric-powered tool.

15 . A washer which pressurizes and discharges washer fluid, comprising:
a pump which includes a cylinder and a plunger housed in the cylinder so as to freely reciprocate and which pressurizes the washer fluid; and a crankshaft for converting rotating motion of an electric-powered motor into reciprocating motion of the plunger, wherein a counterweight which rotates together with the crankshaft is provided to the crankshaft.

16 . A washer which pressurizes and discharges washer fluid, comprising:
a pump which includes a cylinder and a plunger housed in the cylinder so as to freely reciprocate and which pressurizes the washer fluid; a conversion mechanism which converts rotating motion of an electric-powered motor into reciprocating motion of the plunger; a main body in which the pump and the conversion mechanism are housed; a spray device which is connected to the main body through a tube member; a connection port which is provided to the main body and which is connected to one end of the tube member; and a linear flow path which is provided to the main body and through which the pump and the connection port are communicated to each other, wherein the plunger and the flow path are arranged on the same plane as each other.

Assignees

• Hitachi Koki Kk

Inventors

• Horie Noriyuki
• Tadokoro Naoki

Classifications

• B08B3/026 Primary

  Cleaning by making use of hand-held spray guns; Fluid preparations therefor · CPC title

• B08B3/02 Primary

  Cleaning by the force of jets or sprays · CPC title

• B08B3/028

  Spray guns · CPC title