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EP-4741073-A2 - HIGH-PRESSURE CLEANING SYSTEM

EP4741073A2EP 4741073 A2EP4741073 A2EP 4741073A2EP-4741073-A2

Abstract

High pressure cleaning installation (100) comprising a high pressure pump (1) for supplying pressurized cleaning fluid to a tool (52), a thermal engine (3) driving the pump (1), a hose (5) connecting the pump (1) to the tool (52), a clutch (2) connecting the engine (3) to the pump (1). A central unit (4) manages the operation of the installation, via a remote control (6) associated with a fieldbus (101) connected to a central unit (4). The bus is connected to the motor (3), the clutch (2) and the pump (1) as well as to a remote control (6) receiving the status information (SZ) of the various components (1, 2, 3) to remotely control the operation and adjustment of the motor (3), the actuation of the clutch (2) and the adjustment of the pump (1).

Inventors

  • FROGER, RAPHAEL
  • PINTO, DAMIEN

Assignees

  • Rivard

Dates

Publication Date
20260513
Application Date
20251030

Claims (10)

  1. High-pressure cleaning installation (100), comprising a high-pressure pump (1) supplying liquid from a source (11), for example a liquid reservoir; a tool (52); and a motor (3), in particular a thermal motor, driving the pump (1), the operation of the motor having a start-up phase, followed by a normal operating phase, characterized in that a clutch (2) is provided between the motor (3) and the pump (1), the installation being controlled by a central control unit (4) which, during the start-up phase and/or when the tool (52) is not in operation, disengages the pump from the motor by means of the clutch, the pump not being in operation at that time.
  2. High-pressure cleaning installation (100) according to claim 1, characterized in that it comprises - a remote control (6) and - a fieldbus (101) connecting the central unit (4), to the motor (3), to the clutch (2), to the pump (1) and to the remote control (6), - the central unit (4) managing the operation of the motor (3), the clutch (2) and the pump (1) with control signals (SC, SCm, SCemb, SCp), corresponding to the instructions (Im, Iem, IP) of the remote control (6) receiving status information (SZm, SZemb, SZp) from the different components (1, 2, 3) to remotely control the operation and adjustment of the motor (3), the actuation of the clutch (2) and the adjustment of the pump (1).
  3. High-pressure cleaning installation (100) according to claim 2, characterized in that The fieldbus (101) is a CAN bus.
  4. High-pressure cleaning installation (100) according to claim 2 or 3, characterized in that the control unit (4) is connected to the remote control (6) by a radio link with a transceiver (43) associated with the central unit (4).
  5. Installation (100) according to any one of claims 1 to 4, characterized in that The control unit (4) receives motor status signals (SZm) to transmit them to a remote control (6) which transmits the motor control instructions (Im (A),Im(M)) and (ImR) to generate the control signals (SCm) SCm(M) SCm(A), SCm(Ri), of the engine (3) to start it, adjust the speed (Ri) or stop the engine.
  6. Installation (100) according to any one of claims 1 to 5, characterized in that The control unit (4) receives the status signals (SZemb) from the clutch (2), transmits them to the remote control (6), and in response to the instructions (Iemb) (E)), or (Iemb (D)) sent to the control unit (4), generates the control signals (SCemb(E)) or (SCemb(D) to the clutch (2) to engage or disengage the clutch (2).
  7. Installation (100) according to any one of claims 1 to 6, characterized in that The control unit (4) receives the status signals (SZp) from the pump (1) to transmit them to the remote control (6) which sends instructions (Ip(Pi)) or (Ip(db)) to the unit (4) which generates pressure control signals (SCp (Pi)) or (SCp (dbi)) to adjust the pressure (Pi) or flow (dbi) to the pump (1).
  8. Installation (100) according to any one of claims 1 to 7, characterized in that The installation includes a cleaning fluid reservoir (11) equipped with a level detector (111) to detect the fluid level and provide a status signal (SZr11 (NV11)) to transmit the level information to the remote control (6).
  9. Installation (100) according to any one of claims 1 to 8, characterized in that the installation includes a fuel tank (31) for the engine (3) which includes a level detector (NV31) to detect the level of the tank (31) and provide a status signal (SZr31) (NV31)) giving the remote control (6) the fuel level information in the tank (31).
  10. Installation (100) according to any one of claims 1 to 9, characterized in that the unit (4) receiving the status signals (SZ), analyzes them by comparing them to thresholds, individually or in combination to deduce possible malfunctions and transmits the information of this comparison to the remote control (6) or directly commands the shutdown of a faulty component (1, 2, 3) or switches to reduced operation.

Description

The present invention relates to a transportable high-pressure cleaning installation comprising: a high-pressure pump for supplying pressurized cleaning liquid to a tool (gun, cleaning head), a thermal engine driving the pump, and a hose connecting the pump to the tool. The invention relates to the field of high-pressure cleaning systems, known as "skids". Such a system is designed to perform work with a pressurized liquid such as water, for unclogging pipes or cleaning with a gun. Numerous high-pressure cleaning systems already exist, generally transported on a vehicle or integrated into a dedicated high-pressure cleaning vehicle. These systems allow for cleaning or unclogging work using pressurized water. Typical systems consist of a water or cleaning fluid source, such as a tank, supplying a unit comprising a motor and a high-pressure pump. The pump is connected via a high-pressure hose to the cleaning tool. This tool is a gun, a jetting nozzle, or similar device. The high-pressure pump is driven by the internal combustion engine through a direct transmission. Of US5381962 A high-pressure cleaning installation of this kind is known, comprising a high-pressure pump supplying, from a liquid source, a spraying tool, and a motor directly driving the pump, the operation of the motor being controlled via a relay. Of US2013/02114059 A high-pressure cleaning installation of this kind is also known, comprising a high-pressure pump supplying a spraying tool from a liquid source, and a motor directly driving the pump, the rotational speed of a cam of the pump being a function of the motor speed. These earlier-generation facilities have high fuel consumption, and we would like to limit the fuel consumption of a cleaning facility of this kind. Accordingly, in a first aspect, the invention aims at an installation as defined in claim 1, with improvements being defined in subclaims. In earlier installations, the closed-circuit circulation of the liquid heats it up and results in unnecessary fuel consumption. By planning in this way, thanks to the presence of the clutch and its control in such a way as to only drive the pump with the engine when necessary, fuel consumption is reduced. According to another aspect, independent of the first aspect, but which can be combined with it favorably, the present invention aims to simplify the operation of a high-pressure cleaning installation equipped with a thermal engine to facilitate the start-up phase, and to allow flexible management of operation according to the needs at the intervention site. According to this other aspect, the invention relates to a high-pressure cleaning installation comprising: a high-pressure pump for supplying a tool with pressurized cleaning fluid, a thermal engine driving the pump, a hose connecting the pump to the tool, this installation being characterized in that it includes a clutch connecting the motor to the pump, a central unit, a remote control and a fieldbus connecting the central unit, to the motor, to the clutch, to the pump and to the remote control, the central unit managing the operation of the motor, the clutch and the pump with control signals, corresponding to the instructions and the remote control receiving the status information of the different components to remotely control the operation and adjustment of the motor, the actuation of the clutch and the adjustment of the pump. The fieldbus combined with the various components of the installation allows for the expansion of functionalities and the possibilities for real-time control and adjustment. This installation with remote control allows for more precise and adapted adjustment of the various operating parameters such as engine speed and pump pressure and flow settings according to the needs at the intervention site. At the end of the operation, the operator commands the disengagement of the pump and the stopping of the motor, then the winding of the hose connecting the pump to the tool progressively and from the location of the operation. According to another characteristic, the fieldbus is a CAN bus, which is advantageous because the CAN bus is particularly suited to an internal combustion engine environment. According to another feature, the control unit is connected to the remote control by a radio link with a transceiver associated with the central unit, which has the advantage of flexibility of use. According to another feature, the central unit receives motor status signals to transmit them to the remote control which transmits motor control instructions to the central unit to generate motor control signals. According to another feature, the central unit receives the clutch status signals to transmit them to the remote control and in response to the instructions sent by the remote control to the central unit, the latter generates the control signals to engage or disengage the clutch. According to another feature, the central unit receives the pump's status signals to tran