KR20160115587A - High Pressure Washing Machine Having Water Leakage Detecting Function - Google Patents

High Pressure Washing Machine Having Water Leakage Detecting Function Download PDF

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Publication number
KR20160115587A
KR20160115587A KR1020150043561A KR20150043561A KR20160115587A KR 20160115587 A KR20160115587 A KR 20160115587A KR 1020150043561 A KR1020150043561 A KR 1020150043561A KR 20150043561 A KR20150043561 A KR 20150043561A KR 20160115587 A KR20160115587 A KR 20160115587A
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KR
South Korea
Prior art keywords
pressure
water
pump
pipe
pressure switch
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Application number
KR1020150043561A
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Korean (ko)
Inventor
정유철
권오철
김영덕
Original Assignee
주식회사 이피코
김영덕
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Application filed by 주식회사 이피코, 김영덕 filed Critical 주식회사 이피코
Priority to KR1020150043561A priority Critical patent/KR20160115587A/en
Publication of KR20160115587A publication Critical patent/KR20160115587A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays

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  • Cleaning By Liquid Or Steam (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Provided is a high pressure washing machine including a leak detection function, which comprises: a pressure pump (110) discharging water, flowing into a pump chamber (113) through a water inlet (111), through a water supply hole (112) by pressurizing the water at predetermined pressure; a water transfer pipe (120) connected to the water supply hole (112) to transfer the water, discharged at fixed pressure, to the rear end; a water discharge pipe (130) connected to a side of the water transfer pipe (120) to receive the water, and including a wash gun (131) installed at an end part to spray the water depending on opening operation; a first pressure switch (140) placed on one side of the pump chamber (113) to be turned on when pressure in the pump chamber (113) reaches set pressure depending on the opening of the wash gun (131); a second pressure switch (150) placed on the other side of the water transfer pipe (120) to be turned on when pressure in the water transfer pipe (120) is lower than the set pressure; and a control part (160) operating the pressure pump (110) for a set time when receiving a turn-on signal of the second pressure switch (150), maintaining the operation of the pressure pump (110) when receiving the turn-on signal of the first pressure switch (140) in the middle of the operation of the pressure pump (110), and urgently stopping the pressure pump (110) regardless of the turn-on signal of the second pressure switch (150) by determining the detection of leakage when the number of times of operation of the pressure pump (110) reaches a set number within the set time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high pressure washing machine having a leakage detection function,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a high-pressure cleaner having a leakage detection function, and more particularly, Pressure washing machine.

In general, a high pressure washer is a cleaning device that supplies water used for cleaning using a pressure pump at a high pressure. In recent years, a pressure switch is installed on an internal pipe to automatically drive the pressure pump when the pressure inside the pipe decreases, The pressure pump was automatically stopped so that the appropriate high-pressure water was continuously supplied.

However, when a leak is generated on the supply line of the pressure pump or the water, the pressure pump is automatically driven while the internal pressure is decreased. When the pressure is increased by driving the pressure pump, the pressure pump is stopped The pressure pump is continuously driven to cause damage to the motor due to the overload, and power consumption is increased due to unnecessary operation of the pressure pump regardless of the cleaning operation.

Open Utility Model No. 20-2010-0010662 (Oct. 29, 2010), high pressure washer

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an apparatus and a method for automatically controlling a pressure pump according to an on / off operation signal of a pressure switch, And a leakage detection function capable of preventing the pressure pump from being damaged or consuming unnecessary power by detecting the leakage when the leaked water is generated and by emergency stopping the repetitive driving of the pressure pump.

According to an aspect of the present invention, there is provided a pressure pump comprising: a pressure pump (110) for driving a pump and pressurizing water introduced into a pump chamber (113) through a water inlet (111) at a predetermined pressure and discharging the water to a water supply port (112); A water delivery pipe (120) connected to the water supply port (112) and transferring water discharged at a high pressure to a rear end; A water discharge pipe 130 connected to one side of the water supply pipe 120 and supplied with water and having a wash gun 131 for spraying water according to an opening operation; A first pressure switch 140 disposed on one side of the pump chamber 113 and operated when the pressure inside the pump chamber 113 reaches a set pressure as the wash gun 131 opens; A second pressure switch (150) disposed on the other side of the water conveying pipe (120) and operated when the pressure inside the water conveying pipe (120) is lower than the set pressure; And when the ON operation signal of the second pressure switch (150) is received, the pressure pump (110) is driven during the set time, and when the ON operation signal of the first pressure switch (140) When the number of times of driving of the pressure pump 110 reaches the predetermined number of times within the set time, it is determined that the leakage of the water is detected, so that the second pressure switch 150 does not interfere with the ON operation signal of the second pressure switch 150 And a control unit (160) for stopping the pressure pump (110) in an emergency.

When the pressure inside the water conveying pipe 120 increases with respect to the bypass set pressure, the bypass pipe 120 is connected to the recovery port 116 of the pump chamber 113, A bypass valve 170 for recovering a predetermined flow rate through the pipe 171; And a water discharge pipe (181) disposed at a rear end position of the bypass valve (170) on the water conveyance pipe (120) so that when a pressure inside the water conveyance pipe (120) reaches an emergency pressure, And a safety valve 180 for discharging the high-pressure washer to the high-pressure washer.

According to another aspect of the present invention, the second pressure switch 150 has an initial state of the contact B, and is disposed between the bypass valve 170 and the bypass pipe 171 on the water conveying pipe 120 The control unit 160 drives the pressure pump 110 when the ON operation signal of the second pressure switch 150 is received and the OFF operation signal is received When the number of times of driving and stopping of the pressure pump 110 reaches the predetermined number of times within the set time, the controller 100 determines that the leakage of the water is detected, and thus, regardless of the ON operation signal of the second pressure switch 150 A high pressure washer equipped with a leak detection function is provided, characterized in that the pressure pump (110) is stopped in an emergency.

As described above, according to the present invention,

First, by using the ON / OFF operation signals of the first pressure switch 140 disposed in the pressure pump 110 and the second pressure switch 150 disposed in the water supply pipe 120 to which the high-pressure water is transferred, When the number of times of driving of the pressure pump 110 reaches the preset number of times within a set time, the pump 110 is automatically stopped by the pump, It is possible to prevent damage to the battery 110 and to prevent unnecessary power from being lost regardless of the cleaning operation.

In addition, since the supply of water is cut off due to the emergency stop of the pressure pump 110, the leakage water can be limited to the leaked portion, thereby preventing consumption of water due to leakage.

Secondly, when the pressure inside the water conveying pipe 120 increases with respect to the bypass setting pressure on the water conveying pipe 120, a certain flow rate is recovered through the bypass pipe 171 connected to the recovery port 116 of the pump chamber 113 It is possible to prevent the pressure switches 140 and 150 from malfunctioning or irregular discharge of the water through the wash gun 131 due to the application of a higher pressure than necessary on the water supply line .

Thirdly, when the pressure inside the water pipe 120 reaches the emergency pressure at the rear end position of the bypass valve 170 on the water pipe 120, a certain flow rate is discharged to the outside through the emergency discharge pipe 181 connected to one side It is possible to prevent the pressure switches 140 and 150 and various components from being damaged or leaking to each of the fastening portions while an excessively high pressure is applied to the water supply line.

Fourth, the second pressure switch 150 has an initial state of contact B and is disposed between the bypass valve 170 and the bypass pipe 171 on the water supply pipe 120 to change the pressure inside the water supply pipe 120 The controller 160 drives the pressure pump 110 when the ON operation signal of the second pressure switch 150 is received and stops the operation of the pressure pump 110 when the OFF operation signal is received, It is possible to more clearly distinguish between the situation where the water leakage occurs and the situation in which the wash gun 131 is opened and the water is supplied from the water conveyance pipe 120, thereby increasing the accuracy of the automatic control.

1 and 2 are a perspective view and a front view showing the entire configuration of a high-pressure washer having a leak detection function according to a preferred embodiment of the present invention,
FIG. 3 is a front view showing a main configuration of a high-pressure washer having a leak detection function according to a preferred embodiment of the present invention. FIG.
4 is a circuit diagram showing a functional configuration of a high-pressure washer having a leakage detection function according to a preferred embodiment of the present invention.
FIG. 5 and FIG. 6 are side cross-sectional views showing the configurations of the second pressure switch and the second pressure switch according to the preferred embodiment of the present invention,
7 and 8 are front views showing a configuration in which a second pressure switch according to a preferred embodiment of the present invention is installed on a bypass valve.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The high pressure washer 100 provided with the leak detection function according to the preferred embodiment of the present invention includes a first pressure switch 140 disposed in the pressure pump 110 and a second pressure switch 140 disposed in the water supply pipe 120 to which high- The pressure pump 110 is automatically pumped and controlled by using the on / off operation signals of the second pressure switch 150. When the number of times of driving the pressure pump 110 reaches the preset number of times within the set time, The pressure pump 110 can be prevented from being damaged due to the repetition of the driving operation and the unnecessary power and water can be prevented from being wasted regardless of the cleaning operation, A first pressure switch 140, a second pressure switch 150, and a control unit 160, as shown in FIGS. 1 to 3, .

1, the high pressure washer 100 according to the preferred embodiment of the present invention is installed on a base frame 201 on which a moving wheel 204 is mounted, And a handle 202 is attached to a rear end of the base frame 201 at a predetermined height to facilitate user's convenience.

The pressure pump 110 includes a pump chamber 113 having a water inlet 111 and a water supply port 112 and a pump chamber 113 for driving the pump, And a driving motor 114 that pressurizes the water introduced into the pump chamber 113 to a predetermined pressure.

The water inflow inlet 111 is connected to a water tub (not shown) disposed on the base frame 201 or connected to a remote water source (not shown) spaced apart from the high pressure washer 100, The pressure pump 110 can supply necessary water. In addition, a pressure gauge plate 115 is disposed in the pump chamber 113 so that an operator can visually check the pressure gauge plate 115 to confirm whether the pressure gauge plate 115 is operating at an appropriate pressure.

In addition, a plurality of pistons are disposed in the pump chamber 113 according to the type of the pressure pump 110, or an impeller is disposed, and the piston or the impeller rotates by the rotational force of the driving motor 114 to generate a discharge pressure .

Accordingly, the water inlet 111 communicates with the low-pressure region inside the pump chamber 113 to supply water to the inside, and the water supply port 112 communicates with the high-pressure region where the pressure is increased by the pump drive, Pressure water to the delivery pipe (120).

The water supply pipe 120 is a pipe through which the high-pressure water discharged from the pressure pump 110 is transferred. The second pressure switch 150, the water discharge pipe 130, the bypass valve 170, 180) are installed.

The water discharge pipe 130 is connected to one side of the water supply pipe 120 and is supplied with water. At the end of the water discharge pipe 130, a wash gun 131, Wash Gun) is installed.

1, the wash gun 131 is provided with a handle 132 which is used to open or close an internal pipeline by an operator's operation. When the handle 132 is operated, The high-pressure water is discharged through the nozzle 133 at the end portion.

The first pressure switch 140 is a pressure switch for detecting an open state in which water is sprayed from the wash gun 131. The pressure switch 140 is disposed at one side of the pump chamber 113, And operates when the pressure inside the chamber 113 reaches the set pressure.

In the case of the pump chamber 113, when the wash gun 131 is opened and water flow toward the water conveyance pipe 120 and the water discharge pipe 130 is generated, the internal pressure of the pump chamber 113 increases. Is set to a set pressure corresponding to a pressure magnitude that increases with the occurrence of the water flow, and senses the open state of the wash gun 131. In addition, the first pressure switch 140 is installed in a state in which the first pressure switch 140 is turned off in the initial state of the contact a, that is, the non-sensing state, and is turned on in the sensing state.

Therefore, when the wash gun 131 is opened and the water is discharged through the nozzle 133, the water in the pump chamber 113 flows into the pump chamber 113, And the pressure is increased. When the wash gun 131 is changed from the opened state to the closed state, the state returns to the off-state in the initial state. 4, the ON or OFF operation signal generated according to the operation state is transmitted to the controller 160 through a separate signal line and is used as basic data for automatic drive control of the pressure pump 110 do.

5, the first pressure switch 140 includes a body 141 formed to communicate with the inside of the pump chamber 113 and having an inlet 142 opened at a lower end thereof, 141 which are moved forward and backward by the inflow pressure of the water introduced through the inlet 142 by the resiliently compressed resilient spring 144, And a sensing member 146 for generating a sensing signal while the operation button 147 is pressed by the backward operation of the operating body 143. [

The first pressure switch 140 is set to the initial state of the a contact as shown in the lower right circuit diagram. When the pressure of the incoming water presses the elastic spring 144 and retracts the operating body 143, The operation button 147 of the operation button 146 is operated to transmit the ON operation signal to the control unit 160 and the pressure of the water introduced into the inside of the washing gun 131 is closed by the elastic spring 144 The operated button 147 is returned to its original position and is turned off to transmit an OFF operation signal to the control unit 160. [

The second pressure switch 150 is a pressure switch for detecting the internal pressure of the water supply pipe 120 to which water is supplied and is disposed on the other side of the water supply pipe 120 to adjust the internal pressure of the water supply pipe 120 When the pressure is lower than the pressure, it is turned on.

If the wash gun 131 is opened or a water leakage occurs on the water supply line in a state where the first pressure switch 140 and the second pressure switch 150 are both in the off state, The second pressure switch 150 senses the pressure decrease state of the inside of the water conveyance pipe 120 due to the opening of the wash gun 131 or the occurrence of water leakage. Also, the second pressure switch 150 is installed in an initial state of the b contact, that is, in a non-sensing state, and in an off state in a sensing state.

6, a body portion 151 communicating with one side of the water supply pipe 120 of the second pressure switch 150 and having a lower end opened with an inlet 152, (152) that is actuated to move back and forth toward the inlet (152) by elastic compression spring (154) within the body (151) and is moved forward and backward by the inflow pressure of the water flowing through the inlet And a sensing unit 156 that generates a sensing signal while the operation button 157 is pressed by the backward movement of the operating body 153.

The second pressure switch 150 is set to the initial state of the b contact as shown in the circuit diagram at the lower right end of the second pressure switch 150 so that the pressure of the incoming water keeps the on- When the operation button 157 of the sensing element 156 is pressed, the control unit 160 transmits the off operation signal to the control unit 160. When the pressure of the water introduced into the sensing unit 156 is lower than the pressure of the elastic spring 154 When the push button 157 is returned to its home position while the push button 153 is moved forward,

Here, the second pressure switch 150 is set to the initial state of the b contact, and automatically transmits an ON operation signal to the controller 160 at the beginning of the operation when power is applied to the high pressure washer 100. Accordingly, The pump 110 is operated to provide a basic pressure for using the high pressure washer 100 while being automatically driven.

The control unit 160 is a microcomputer for centrally controlling the high pressure washer 100 according to the preferred embodiment of the present invention. When the on operation signal of the second pressure switch 150 is received, When the ON operation signal of the first pressure switch 140 is received during driving of the pressure pump 110, the driving of the pressure pump 110 is maintained. During the set time (for example, 5 minutes) When the number of times of driving of the second pressure switch 110 reaches the preset number of times (for example, 15 times), it is determined that the water leakage is detected and the emergency stop of the pressure pump 110 is performed irrespective of the ON operation signal of the second pressure switch 150 .

The first pressure switch 140 disposed in the pressure pump 110 and the second pressure switch 140 disposed in the water supply pipe 120 to which the high pressure water is transferred through the structure and function of the high pressure washer 100 as described above, When the number of times of driving of the pressure pump 110 reaches the preset number of times within the set time, it is determined that the water leakage is detected, and the second It is possible to prevent the pressure pump 110 from being damaged due to the repetition of the operation by making the pressure pump 110 emergency stop regardless of the operation signal of the pressure switch 150 and to prevent unnecessary power and water from being wasted regardless of the cleaning operation Can be prevented.

The high pressure washer 100 according to the preferred embodiment of the present invention may further include a bypass valve 170 and a safety valve 180.

The bypass valve 170 is a valve for controlling the pressure of the water in the water pipe 120 so that the water is delivered to the water pipe 120 at a constant pressure. The bypass valve 170 is disposed on the water pipe 120, When the internal pressure increases, a certain flow rate is recovered through the bypass pipe 171 connected to the recovery port 116 of the pump chamber 113. It is possible to prevent the pressure switches 140 and 150 from malfunctioning or irregular discharge of water through the wash gun 131 due to application of unnecessarily high pressure on the water supply line through the configuration of the bypass valve 170 .

The safety valve 180 is disposed at a rear end position of the bypass valve 170 on the water supply pipe 120 to prevent damage to the device due to excessive pressure generated in the water supply pipe 120 When the pressure inside the water pipe (120) reaches the emergency pressure, a certain flow rate is discharged through the emergency discharge pipe (181) connected to one side. Excessive high pressure is applied to the water supply line through the configuration of the safety valve 180 to prevent the pressure switches 140 and 150 and various components from being damaged or leakage from occurring at the fastening portion.

7 and 8, a second pressure switch 150 according to a preferred embodiment of the present invention is installed between the bypass valve 170 and the bypass pipe 171 on the water supply pipe 120, The control unit 160 drives the pressure pump 110 when the ON operation signal of the second pressure switch 150 is received and when the OFF operation signal is received When the number of times of driving and stopping of the pressure pump 110 reaches the preset number of times within the set time, the control unit determines that the leakage of water is detected, (110) to stop in an emergency. Therefore, it is possible to more clearly distinguish the situation where the water leakage occurs and the situation where the wash gun 131 is opened and the water is supplied from the water conveyance pipe 120, thereby increasing the accuracy of the automatic control.

1 and 4, the high pressure washer 100 according to the preferred embodiment of the present invention is driven and controlled in accordance with a control signal of the controller 160, It is preferable that the display unit 192 is provided.

Especially, it is preferable that the emergency stop situation according to the leakage detection is displayed as an outside, so that the operator can recognize it early and appropriate measures can be taken. Although the display unit 192 is a lamp that displays the blinking state and the lighting color in different colors, the present invention is not limited thereto. The lamp may be a liquid crystal display, And output the pre-stored sound data according to various states.

1, the display unit 192 is mounted on a control module 190 installed at a predetermined height on the base frame 201 so that the operator can more easily identify the display contents, The control unit 190 is provided with an operation unit 191 for operating various settings and operation states of the high pressure washer 100 so as to be able to check the setting and operation status while viewing the display unit 192.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be clear to those who have knowledge.

100 ... High pressure washer 110 ... Pressure pump
120 ... water pipe 130 ... water discharge pipe
140 ... First pressure switch 150 ... Second pressure switch
160 ... control unit 170 ... bypass valve
180 ... Safety valve

Claims (3)

A pressure pump 110 driving the pump and pressurizing the water introduced into the pump chamber 113 through the water inlet 111 at a predetermined pressure and discharging the water to the water supply port 112;
A water delivery pipe (120) connected to the water supply port (112) and transferring water discharged at a high pressure to a rear end;
A water discharge pipe 130 connected to one side of the water supply pipe 120 and supplied with water and having a wash gun 131 for spraying water according to an opening operation;
A first pressure switch 140 disposed on one side of the pump chamber 113 and operated when the pressure inside the pump chamber 113 reaches a set pressure as the wash gun 131 opens;
A second pressure switch (150) disposed on the other side of the water conveying pipe (120) and operated when the pressure inside the water conveying pipe (120) is lower than the set pressure; And
When the ON operation signal of the second pressure switch 150 is received and the ON operation signal of the first pressure switch 140 is received during driving of the pressure pump 110 during the set time, When the number of times of driving of the pressure pump 110 reaches the predetermined number of times within the set time while the driving of the pressure pump 110 is maintained, And a controller (160) for stopping the pump (110) in an emergency.
The method according to claim 1,
When the pressure inside the water conveying pipe 120 increases with respect to the bypass setting pressure, the water flowing through the bypass pipe 171 connected to the recovery port 116 of the pump chamber 113, A bypass valve 170 for recovering the refrigerant; And
When the pressure inside the water pipe 120 reaches the emergency pressure, the water pipe 120 is disposed at the rear end position of the bypass pipe 170 on the water pipe 120, and when the pressure inside the water pipe 120 reaches the emergency pressure, And a safety valve (180) for discharging the high-pressure washer.
3. The method of claim 2,
The second pressure switch 150 has an initial state of the contact B and is disposed between the bypass valve 170 and the bypass pipe 171 on the water supply pipe 120, Sensing the pressure change,
The control unit 160 drives the pressure pump 110 when the ON operation signal of the second pressure switch 150 is received and stops driving the pressure pump 110 when the OFF operation signal is received, When the number of times of driving and stopping of the pump 110 reaches a predetermined number of times, it is determined that the water leakage is detected and the emergency stop of the pressure pump 110 is performed irrespective of the ON operation signal of the second pressure switch 150 High pressure washer with function.
KR1020150043561A 2015-03-27 2015-03-27 High Pressure Washing Machine Having Water Leakage Detecting Function KR20160115587A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102038868B1 (en) * 2019-07-09 2019-10-31 이성관 Water-jet blasting system
KR102038869B1 (en) * 2019-07-09 2019-10-31 이성관 Water-jet blasting system
KR20190138976A (en) * 2018-06-07 2019-12-17 김영덕 High Pressure Washing Machine Having Water Leakage Detecting Function

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100010662U (en) 2009-04-21 2010-10-29 디에이치엠(주) High pressure cleaning device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100010662U (en) 2009-04-21 2010-10-29 디에이치엠(주) High pressure cleaning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190138976A (en) * 2018-06-07 2019-12-17 김영덕 High Pressure Washing Machine Having Water Leakage Detecting Function
KR102038868B1 (en) * 2019-07-09 2019-10-31 이성관 Water-jet blasting system
KR102038869B1 (en) * 2019-07-09 2019-10-31 이성관 Water-jet blasting system

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