WO2015166905A1 - Appareil de nettoyage électrique - Google Patents

Appareil de nettoyage électrique Download PDF

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Publication number
WO2015166905A1
WO2015166905A1 PCT/JP2015/062677 JP2015062677W WO2015166905A1 WO 2015166905 A1 WO2015166905 A1 WO 2015166905A1 JP 2015062677 W JP2015062677 W JP 2015062677W WO 2015166905 A1 WO2015166905 A1 WO 2015166905A1
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WO
WIPO (PCT)
Prior art keywords
motor
pressure
washing machine
nozzle
time
Prior art date
Application number
PCT/JP2015/062677
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English (en)
Japanese (ja)
Inventor
智明 須藤
和隆 岩田
裕太 野口
Original Assignee
日立工機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日立工機株式会社 filed Critical 日立工機株式会社
Priority to JP2016516369A priority Critical patent/JP6222350B2/ja
Publication of WO2015166905A1 publication Critical patent/WO2015166905A1/fr

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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

Definitions

  • the present invention relates to an electric washing machine that ejects liquid pressurized by an electric pump.
  • a motor or an engine is used as a power source for driving a pump.
  • those using a motor as a power source are preferable from the viewpoint of quietness and the like.
  • two types of power sources can be used: a commercial AC power source and a battery (storage battery).
  • a commercial AC power supply When a commercial AC power supply is used, it can be used only in a place where power can be supplied, and it is difficult to use it outdoors. Therefore, a washing machine using a battery as a power supply is particularly preferable.
  • a trigger is provided for a nozzle that injects water, and an operator grips this nozzle and pressurizes it with a pump by operating the trigger with the tip of the nozzle facing the object to be cleaned. Water can be sprayed from the tip of the trigger to perform the cleaning operation.
  • a normal electric tool or the like operates when a motor is energized and the motor rotates during use, but power is also supplied to a control circuit (microcomputer) used for the control.
  • some electric tools are provided with two types of switches, a main power switch and a motor start switch.
  • the main power switch When the main power switch is turned on, the control circuit is powered, but the motor is not energized. In this state, the start switch is turned on, and the motor rotates. The power tool operates.
  • the automatic power-off control it is important to recognize a period in which work using the electric tool is not performed, and the automatic power-off is performed when this period is long.
  • This period is recognized as a period in which the motor start switch is continuously turned off in a state where the main power switch is turned on, or a period in which the motor is continuously turned off. Thereby, when this period exceeds predetermined time, it determines with this electric tool not being used, and an auto power-off is performed.
  • the state where the electric washing machine is used means a state where water is jetted from the nozzle.
  • an electric washing machine in order to inject pressurized water instantly from the nozzle, it is necessary to constantly increase the pressure of the water in the pump, and the water pressure in the pump (between the pump and the nozzle) Is always automatically maintained within a predetermined range of pressure. For this reason, in the electric washing machine, the operation of water injection and the on / off operation of the motor are not necessarily directly connected, and the operation of automatically turning on the pump when the water pressure decreases is automatically performed. When water is injected, the pump is automatically turned on because the water pressure drops.
  • the trigger Since on / off of water injection is controlled by a trigger attached to the nozzle, it is also possible to use the trigger as a reference instead of turning on / off the motor in order to perform auto power-off control. It's not impossible. In this case, for example, a period in which the trigger is not operated is recognized as a period in which the washing machine is not used, and auto power-off can be performed when the period becomes longer.
  • the trigger generally has only a function of mechanically operating a valve that controls water injection, and is not an electrical switch. Although it is not impossible to detect the on / off state by using an electrical switch as the trigger or connecting any electrical switch to the trigger, the nozzle to which the trigger is attached is particularly vulnerable to water.
  • the present invention has been made in view of such problems, and an object thereof is to provide an invention that solves the above problems.
  • the electric washing machine of the present invention is an electric washing machine that ejects liquid pressurized by a pump driven by a motor from a nozzle, and adjusts the pressure of the liquid between the pump and the nozzle.
  • a controller that automatically switches on and off of the motor, and stops power supply to the motor when the motor is repeatedly turned on and off a plurality of times when the liquid is not ejected from the nozzle It is comprised so that it may do.
  • the control unit turns off the motor when the on / off of the motor is repeated a plurality of times in a state where the liquid is not ejected from the nozzle, and thereafter the motor Control is performed without turning on the power.
  • the electric cleaning machine of the present invention is configured to stop power supply to the control unit when the motor is repeatedly turned on and off a plurality of times in a state where the liquid is not ejected from the nozzle.
  • the electric washing machine of the present invention is an electric washing machine that ejects liquid pressurized by a pump driven by a motor from a nozzle, and adjusts the pressure of the liquid between the pump and the nozzle.
  • a first control unit configured to automatically switch on and off of the motor, wherein a time until the pressure exceeds the set pressure value after the pressure continuously falls below a set pressure value is predetermined; The power supply to the motor is stopped when the state within the time is repeated a plurality of times within a second time longer than the first time.
  • control unit turns off the motor when the state within the first time is repeated a plurality of times within the second time, and does not turn on the motor thereafter. Control is performed.
  • the set pressure value includes a first set pressure value and a second set pressure value that is larger than the first set pressure value
  • the control unit includes the pressure When the pressure becomes equal to or lower than the first set pressure value, the motor is turned on, and when the pressure becomes equal to or higher than the second set pressure value, the motor is turned off.
  • the electric washing machine according to the present invention is configured so that the time until the pressure becomes equal to or higher than the second set pressure value after the pressure becomes equal to or lower than the first set pressure value exceeds the first time. It is characterized in that the power supply to is continued.
  • the electric washing machine of the present invention is an electric washing machine that ejects liquid pressurized by a pump driven by a motor from a nozzle, and adjusts the pressure of the liquid between the pump and the nozzle.
  • an auto power-off control unit that performs control to stop power supply to the pressure regulation control unit when the pump is turned off.
  • the pressure adjustment control unit turns on the pump when the pressure falls below a lower limit value of a certain range, and the pressure rises above an upper limit value of the range
  • the control for turning off the pump is performed, and the set pressure value is the lower limit value.
  • the electric cleaning machine of the present invention is a cleaning in which a pressure switch that functions as an electrical switch when the pressure falls below the set pressure value is connected via the nozzle and a hose and integrated with the pump. It is provided in the machine body.
  • the electric washing machine of the present invention is characterized in that a storage battery is used as a power source for the pump and the control unit.
  • the electric washing machine of the present invention is characterized in that a storage battery is used as a power source for the pump and the pressure control unit.
  • the nozzle is equipped with a trigger for mechanically controlling the ejection of the liquid.
  • the liquid is water.
  • FIG. 1 is a diagram schematically showing the overall configuration of the electric washing machine (washing machine) 1.
  • water stored in a tank 11 provided in the washing machine body 10 is pumped and pressurized by a pump 12, and is guided to a nozzle 14 through the flexible hose 13.
  • the nozzle 14 is provided with a valve 141 for opening and closing the flow of water, and the opening and closing control is mechanically controlled by a trigger 142.
  • the operator can inject the pressurized water from the tip of the nozzle 14 by pulling (turning on) the trigger 142 in a state where the pressurized water exists in the nozzle 14. Since the nozzle 14 is shaped to be easily held and carried by an operator, the operator performs a cleaning operation by turning the tip 142 toward the object to be cleaned and turning on the trigger 142. be able to.
  • the cleaning machine body 10 includes a mechanism for operating the pump 12.
  • the pump 12 is driven by a motor (brushless motor) 15. Therefore, on / off of the pump 12 is substantially equivalent to on / off of the motor 15, and water between the pump 12 and the nozzle 14 is pressurized when the motor 15 is turned on.
  • the motor 15 is driven using a control circuit 16, and a battery 17 is used as a power source.
  • a rechargeable storage battery battery
  • the battery 17 serves as a power source that directly drives the motor 15 and a power source that drives the control circuit 16.
  • the voltage of the battery 17 is converted into a power supply voltage of the control circuit 16 or the like via the power supply circuit 20 and supplied to the control circuit 16 (microcomputer 161). Power supply to the control circuit 16 by the battery 17 (power supply circuit 20) is controlled by the main power switch 18. When the main power switch 18 is turned on, the on signal is input to the power circuit 20 to activate the power circuit 20 and generate the power voltage of the control circuit 16.
  • the cleaning machine body 10 and the nozzle 14 are connected only by the hose 13, and no electrical wiring is provided between them. *
  • the power supply to the motor 15 is not directly controlled by the main power switch 18 but is automatically performed by the control circuit 16.
  • This control is performed using a pressure switch 19 that is attached to the pump 12 and detects the water pressure between the pump 12 and the nozzle 14.
  • P1 first set pressure value
  • P2 second set pressure value, P1 ⁇ P2
  • P1 first set pressure value
  • P2 second set pressure value
  • P1 second set pressure value
  • P1 second set pressure value
  • the control circuit 16 performs control to turn on the motor 15 when the water pressure becomes P1 or less and turn off the motor 15 when the water pressure becomes P2 or more.
  • P1 can be set to, for example, about 2 MPa
  • P2 is appropriately set within a larger range, for example, about 2.5 MPa. *
  • the control circuit 16 functions as a pressure regulation control unit that performs pressure regulation control.
  • FIG. 2 is a diagram showing the relationship among the control circuit 16, the battery 17, the main power switch 18 (tact switch), the power circuit 20, the pressure switch 19, and the motor 15 in the above configuration.
  • the control circuit 16 includes a microcomputer 161 and an inverter circuit 162.
  • the power of the motor 15, which is a three-phase brushless motor, is supplied from the battery 17 through the inverter circuit 162, and on / off of the motor 15 is controlled by the microcomputer 161.
  • the microcomputer 161 refers to the current water pressure and the vertical relationship between P1 and P2 by the pressure switch 19 as described above. *
  • control circuit 16 (microcomputer 161) recognizes the time from when the water pressure becomes equal to or lower than P1 to when the water pressure becomes equal to or lower than P1 when the water pressure becomes equal to or lower than P1. When this time exceeds a preset first time (T1), it is determined that the operation using the cleaning machine 1 has been performed. After that, when the motor 15 is turned off and the motor 15 is not turned on again after exceeding T1, the current from the battery 17 to the control circuit 16 is not exceeded when the preset second time T2 has elapsed. Supply is automatically turned off (auto power off). The on / off of the motor 15 is controlled using the pressure switch 19 as described above, and this control is also performed using the pressure switch 19. That is, the control circuit 16 also functions as an auto power off control unit that performs auto power off control. *
  • FIG. 3 schematically shows the temporal change of the water pressure detected by the pressure switch 19 and the on / off state of the motor 15 when the control circuit 16 performs pressure regulation control and auto power-off control.
  • P1 is set to 2.0 MPa
  • P2 is set to 2.5 MPa.
  • the period T00 in FIG. 3 is a period in which the motor 15 is turned off and the water pressure decreases from P2 to P1.
  • the motor 15 is turned on and the water pressure rises again.
  • the period during which the motor 15 is turned on (the time during which the water pressure increases from P1 to P2) is T01, which is an extremely short time (T01 ⁇ T00) with respect to T00.
  • T00 and T01 are not necessarily constant because T00 and T01 may change depending on the set values and situations of P1 and P2, but for example, T00 is about 3 minutes and T01 is 1 second or less. *
  • the water pressure in the pump 12 is greatly reduced and falls below P1, so that the motor 15 is also turned on.
  • the water pressure does not rise immediately while water is being jetted, or even when it rises, the rate of rise is slower than in the above case.
  • the water pressure is P1 or less. That is, when water has not been jetted, the water pressure quickly rose from P1 when the motor 15 was turned on, whereas when water was jetted, even when the motor 15 was turned on.
  • the water pressure does not increase from P1 at least instantaneously.
  • Tj1 if the time during which the motor 15 is turned on in this case is Tj1, Tj1 >> T01.
  • T1 is set, and if the time when the water pressure is equal to or less than the set pressure value (P1) is equal to or greater than T1, it is determined that water is ejected from the nozzle 14, and this time is less than T1. If it is, it can be determined that water is not ejected from the nozzle 14.
  • T01 is about 1 second, and the time during which the water pressure is equal to or lower than P1 within the period of T01 is even shorter than this.
  • T1 can be set to about 1 second, for example.
  • Tj when the water pressure continuously becomes equal to or less than P1 exceeds T1, it is determined that water has been jetted from the nozzle 14 (this washing machine 1 has been used), and this washing is performed during the period Tj. It can be recognized that the machine 1 is in a usage period used by an operator.
  • the second time T2 (T2 >> T00, T1) is set, and if the use period is not recognized within the period T2, it can be estimated that the washing machine 1 has not been used for a long time.
  • the control circuit 16 microcomputer 161 can turn off the supply of current to the control circuit 16 (auto power off) while the motor 15 is off.
  • the main power switch 18 may be turned on again.
  • T2 can be about 10 minutes when T00 is about 3 minutes. In this case, the washing machine 1 is automatically turned off if it is not used for 10 minutes. *
  • the pressure switch 19 and the control circuit 16 used for pressure regulation control can also be used for auto power-off control.
  • automatic power-off control can be performed together with pressure regulation control with a simple configuration.
  • the control circuit 16 can use another reference for auto power-off.
  • the control circuit 16 can perform control so that the motor 15 is not turned on again for pressure regulation control. Further, similarly to the above, the supply of power to the control unit 16 can also be turned off.
  • auto power-off control can be performed based on a reference different from that described above. For example, when the time when the water pressure is P1 or less (time when the motor 15 is turned on) is T1 or less is repeated a plurality of times within the time T2 across the time when the motor 15 is turned off. Can auto power off. When this control is performed, even if T2 is set to be longer, the power saving effect is higher because the auto power off is actually performed in a shorter time.
  • FIG. 4 is a flowchart showing an example of the operation of the automatic power off control in the washing machine 1.
  • a switch-on signal is input to the power circuit 20.
  • the power supply circuit 20 is activated, a voltage is applied to the control circuit 16 and the control circuit 16 is activated.
  • the control circuit 16 performs pressure regulation control with reference to the output from the pressure switch 19 (S2). In this pressure regulation control, as described above, control is performed so that the motor 15 is turned on when the water pressure is P1 or less, and the motor 15 is turned off when the water pressure is P2 or more.
  • S1 the pressure regulation control
  • the above control is performed regardless of the operation of the trigger 142.
  • the period of use is estimated based on the information on whether the motor 15 is rotating (S3) and whether the time when the water pressure is continuously P1 or less has exceeded T1 (S4). *
  • control circuit 16 refers only to the pressure switch 19 provided in the cleaning machine body 10 during control. For this reason, it is not necessary to provide an electrical switch on the nozzle 14 side including the trigger 142, and it is not necessary to provide an electrical wiring between the nozzle 14 and the cleaning machine body 10.
  • the pressure regulation control is performed in the range of the water pressure P1 and P2, and the lower limit value of the pressure regulation control is used as a set pressure value that serves as a reference for the determination (S3) as to whether or not it is in use.
  • P1 set as the upper limit and P2 set as the upper limit As well as P1 set as the upper limit and P2 set as the upper limit.
  • the lower limit or upper limit water pressure of the pressure regulation control and the set pressure value used as a criterion for determining whether or not the usage period is in use are equal. For example, instead of determining whether or not the motor 15 is rotating (S3), it can be determined whether or not the water pressure is in the range of P2 to P3 (P1 ⁇ P2 ⁇ P3 ⁇ P4).
  • control circuit 16 functions as a pressure regulation control unit and an auto power off control unit.
  • the pressure regulation control unit and the auto power off control unit can be provided separately.
  • the power source of the cleaning machine 1 is the battery 17 (storage battery).
  • the above operation reduces power consumption. It is clear that the above configuration is effective.
  • SYMBOLS 1 Electric washing machine (washing machine), 10 ... Washing machine main body, 11 ... Tank, 12 ... Pump, 13 ... Hose, 14 ... Nozzle, 15 ... Motor, 16 ... Control circuit (Pressure adjustment control part, auto power-off control) Part), 17 ... battery, 18 ... main power switch, 19 ... pressure switch, 20 ... power supply circuit, 141 ... valve, 142 ... trigger, 161 ... microcomputer, 162 ... inverter circuit

Landscapes

  • Cleaning By Liquid Or Steam (AREA)

Abstract

L'invention concerne un appareil de nettoyage, dans lequel, compte tenu du fait que la commande d'arrêt automatique est effectuée à l'aide d'une configuration simple, l'énergie est automatiquement fournie à un moteur par un circuit de commande. Cette commande est réalisée à l'aide d'un commutateur de pression qui détecte la pression de l'eau. Le circuit de commande effectue une commande qui provoque la mise sous tension du moteur lorsque la pression de l'eau devient égale ou inférieure à une première valeur de pression de consigne, et qui provoque la mise hors tension du moteur lorsque la pression de l'eau atteint au moins une seconde valeur de pression de consigne. En outre, lorsque la pression de l'eau est devenue égale ou inférieure à la première valeur de pression de consigne, au niveau du commutateur de pression, le circuit de commande reconnaît la quantité de temps (Tj1) jusqu'à ce ce que la pression de l'eau dépasse la seconde valeur de pression spécifiée après que la pression de l'eau est devenue égale ou inférieure à la première valeur de pression de consigne. Dans un cas où ce temps dépasse un premier temps, il est déterminé que le travail a été effectué à l'aide de l'appareil de nettoyage, et ensuite, en cas d'absence de cas dans lequel après que le moteur a été éteint le moteur a été mis en marche à nouveau après avoir passé la première fois, et dans un cas où un second temps (T2) s'est écoulé, la fourniture de courant à partir d'une batterie au circuit de commande est automatiquement mise hors tension.
PCT/JP2015/062677 2014-04-28 2015-04-27 Appareil de nettoyage électrique WO2015166905A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016516369A JP6222350B2 (ja) 2014-04-28 2015-04-27 電動洗浄機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-092875 2014-04-28
JP2014092875 2014-04-28

Publications (1)

Publication Number Publication Date
WO2015166905A1 true WO2015166905A1 (fr) 2015-11-05

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JP (1) JP6222350B2 (fr)
WO (1) WO2015166905A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108067454A (zh) * 2016-11-11 2018-05-25 苏州宝时得电动工具有限公司 压力清洗机及该压力清洗机的接口附件识别方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06320121A (ja) * 1993-03-15 1994-11-22 Mk Seiko Co Ltd スプレー式洗浄装置
JPH07259746A (ja) * 1994-03-24 1995-10-09 Hitachi Building Syst Eng & Service Co Ltd 給水設備の運転装置
JPH10205456A (ja) * 1997-01-24 1998-08-04 Hitachi Ltd 回転機械制御装置およびその制御方法
JP2009052403A (ja) * 2007-08-23 2009-03-12 Nidec Shibaura Corp ポンプ装置の制御装置及びその方法
WO2013099843A1 (fr) * 2011-12-27 2013-07-04 株式会社 荏原製作所 Dispositif d'alimentation en eau et procédé d'alimentation en eau
JP2015025427A (ja) * 2013-07-26 2015-02-05 株式会社荏原製作所 給水装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06320121A (ja) * 1993-03-15 1994-11-22 Mk Seiko Co Ltd スプレー式洗浄装置
JPH07259746A (ja) * 1994-03-24 1995-10-09 Hitachi Building Syst Eng & Service Co Ltd 給水設備の運転装置
JPH10205456A (ja) * 1997-01-24 1998-08-04 Hitachi Ltd 回転機械制御装置およびその制御方法
JP2009052403A (ja) * 2007-08-23 2009-03-12 Nidec Shibaura Corp ポンプ装置の制御装置及びその方法
WO2013099843A1 (fr) * 2011-12-27 2013-07-04 株式会社 荏原製作所 Dispositif d'alimentation en eau et procédé d'alimentation en eau
JP2015025427A (ja) * 2013-07-26 2015-02-05 株式会社荏原製作所 給水装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108067454A (zh) * 2016-11-11 2018-05-25 苏州宝时得电动工具有限公司 压力清洗机及该压力清洗机的接口附件识别方法

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