EP2488309B1 - Appareil de nettoyage haute pression - Google Patents

Appareil de nettoyage haute pression Download PDF

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Publication number
EP2488309B1
EP2488309B1 EP09737398.9A EP09737398A EP2488309B1 EP 2488309 B1 EP2488309 B1 EP 2488309B1 EP 09737398 A EP09737398 A EP 09737398A EP 2488309 B1 EP2488309 B1 EP 2488309B1
Authority
EP
European Patent Office
Prior art keywords
pressure cleaning
cleaning appliance
shell
fan
appliance according
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP09737398.9A
Other languages
German (de)
English (en)
Other versions
EP2488309A1 (fr
Inventor
Werner Schwab
Peter Pfaff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP2488309A1 publication Critical patent/EP2488309A1/fr
Application granted granted Critical
Publication of EP2488309B1 publication Critical patent/EP2488309B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • 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
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor
    • 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
    • B08B2203/007—Heating the liquid
    • 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
    • B08B2203/0211—Case coverings
    • 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
    • B08B2203/0235—Cooling the motor pump

Definitions

  • the invention relates to a high-pressure cleaning device, comprising a heatable heat exchanger for heating a deliverable from the high-pressure cleaning fluid, a motor with a drive shaft defining a drive shaft, a pump unit to increase the fluid pressure, an impeller for generating a combustion air flow and a fuel pump to promote a fuel for the heat exchanger wherein the pump unit, the impeller and the fuel pump are arranged along the drive axis and driven by the drive shaft and form together with the motor a unit.
  • Such a high-pressure cleaner is in the DE 36 17 556 A1 described. It has a complicated construction, in which the unit mounted vibrating and wobbling with vertical drive axle standing on a wall of a complex designed housing for the impeller and the fuel pump is held on a chassis of the high-pressure cleaner. The arranged above the wall part of the assembly of motor and pump unit is freely accessible in the interior formed under a hood of the high-pressure cleaner.
  • the EP 0 890 394 A2 which is considered to be the closest prior art for the purposes of claim 1, describes a high pressure cleaning apparatus comprising a heatable heat exchanger and a motor pump unit, the motor pump unit comprising an electric motor, a high pressure pump, and optionally a ventilating fan for providing a cooling air flow to the motor pump unit.
  • the motor pump unit is received in a semicircular in cross section, cup-shaped depression of the upper part of a chassis of the high-pressure cleaner.
  • a cross-sectionally also semicircular hood covers the motor pump unit and encloses it together with the recess on all sides.
  • a high-pressure cleaning device which has a horizontally mounted heat exchanger with a horizontally oriented axis.
  • a motor pump unit is arranged with an electric motor and a high-pressure pump drivable by this, wherein the electric motor also drives a fan for providing a combustion air flow and a fuel pump for conveying a fuel.
  • Object of the present invention is to develop a high-pressure cleaning device of the type mentioned so that while achieving a more compact design for the high-pressure cleaner a simplified assembly of the unit on the high-pressure cleaner is possible.
  • the half-shell housing for mounting the assembly on the high-pressure cleaner otherwise required fasteners for mounting individual components of the assembly can be at least partially saved. This saving leads on the one hand to a reduced space requirement and thereby favors a more compact design of the high-pressure cleaning device. On the other hand, less effort is required to mount the unit on the high-pressure cleaner. In addition to saving on fasteners, the simplified assembly achieved thereby serves to reduce the manufacturing cost of the high pressure cleaner. In addition, the maintenance of the high-pressure cleaner is simplified.
  • the assembly is at least partially included. This is for example possible because it is used approximately in the first half-shell and is then at least partially covered by the second half-shell.
  • protrusions may be arranged on the assembly, which cooperate with corresponding recesses on the half-shell housing for fixing the assembly relative to the half-shell housing.
  • the projections may be pins formed on the motor, which correspond with blind-hole-like recesses on the half-shell housing.
  • the structural unit can be frictionally held on the half-shell housing.
  • the structural unit is at least partially accommodated in the high-pressure cleaning device according to the invention in the receiving space and thus at least partially covered by the first and / or second half-shell.
  • the possibility is given to protect the recorded in the receiving part of the unit from external influences and to escape the immediate access of a user.
  • the pump unit is at least partially disposed outside of the half-shell housing. In this way, access to the pump unit is facilitated. This is advantageous, for example, during maintenance of the high-pressure cleaning device, for example when maintenance work is to be carried out on a supply line for pressurized liquid and / or on a discharge line for pressurized liquid which is held on the pumping unit.
  • the high-pressure cleaning device is arranged along the drive axis and driven by the drive shaft fan wheel for generating a cooling the motor cooling air flow as part of Assembly includes.
  • the fan is part of the assembly and driven by the drive shaft, so that a separate drive for the fan can be avoided. This allows a still compact design of the high-pressure cleaner.
  • Effective cooling of the engine can be achieved; if the fan is designed as held on the drive shaft axial fan and the engine, relative to the drive axis, axially upstream. In this case, it is preferably directly upstream of the engine.
  • the fan and the motor are at least partially arranged in the receiving space. In this way, the fan and the motor are protected by the half-shell housing at least partially against external influences and immediate access by a user. At the same time, a cooling of the motor can be ensured even with a compact design of the half-shell housing by the fan in the drive chamber generates a cooling air flow.
  • the half-shell housing in the region of the fan and the motor designed a flow channel and if in the half-shell housing the fan, relative to the drive axis, axially upstream at least one inlet for air sucked by the fan and axially downstream at least one outlet opening for the cooling air flow is formed ,
  • a particularly effective cooling of the engine can be achieved, in which the fan wheel sucks in cooling air through the at least one inlet opening and blows through the flow channel past the engine.
  • the cooling air can escape from the half-shell housing.
  • the first and / or the second Half shell serve in this embodiment as air guide elements of the flow channel, in which case they may be shaped in particular so that the half shell housing an outer contour of the engine is modeled. In this way, it can be effectively flows around the cooling air flow and cooled.
  • At least partially atmospheric cooling air is sucked through the at least one inlet opening and that the at least one outlet opening passing cooling air can be at least partially discharged into the atmosphere.
  • the pump unit can in particular with its arranged outside of the half-shell housing part in a half-space be arranged, which is bounded by one of the half-shells, which projects in the region of the pump unit, based on the drive axis, axially beyond the other half-shell.
  • the pump unit in the axial direction, based on the drive axle, forms a first end of the assembly.
  • the pump unit is arranged in the axial direction, based on the drive axis, on the side facing away from the above-mentioned fan side of the motor. This allows not only to cool the engine by means of the cooling air flow, but also the pump unit.
  • the motor and the pump unit form a unit which engages axially through an opening formed in the half-shell housing between the first half shell and the second half shell, relative to the drive axle.
  • the pump may for example be flanged to the engine and is arranged in this embodiment, at least partially outside the receiving space.
  • the impeller is arranged in the receiving space.
  • the half-shell housing sections together with the impeller form a fan for combustion air.
  • a separate housing for the impeller can be avoided in this way. This allows over the achievement of a compact design addition, a saving of components and thus allows a more cost-effective production of the high-pressure cleaning device.
  • an air duct for the combustion air can be achieved with the half-shell housing.
  • blower of blower wheel and half-shell housing formed in this way, an effective combustion air flow can be provided if in the half shell housing the impeller, relative to the drive axis, axially upstream at least one inlet for air sucked by the impeller and / or if in the half shell housing at least one outlet opening for the combustion air flow is formed.
  • At least partially atmospheric air can be sucked from the impeller through the inlet opening, so that the heat exchanger is not supplied exclusively by the exhaust air of the engine heated air.
  • the half-shell housing forms a connecting element for a combustion air duct, which opens into the receiving space via the outlet opening.
  • the connecting element is designed, for example, in the form of a connecting piece, which can be detachably connected to the combustion air channel, in particular without tools. This facilitates the installation and maintenance of the high-pressure cleaner.
  • the impeller is formed as held on the drive shaft radial fan and arranged in the axial direction, relative to the drive axis, on the side facing away from the motor of the motor associated impeller.
  • the blower wheel can effectively provide a combustion air flow. Because the impeller is axially upstream of the impeller and the engine, in this embodiment it can be ensured that the combustion air does not comprise exclusively air heated by waste heat from the engine. This has proven in practice to be cheaper for the operation of the heat exchanger.
  • the half-shell housing in the air sucked by the fan through several formed in the half-shell housing in the circumferential direction of the drive axis through openings can.
  • the impeller axially upstream fan impeller effectively a combustion air flow can be provided.
  • the half-shell housing for example, form a first housing portion, which forms a fan together with the impeller.
  • the half-shell housing can form a second housing section, which forms a flow channel at least partially surrounding the fan wheel and the motor.
  • the two housing sections are connected to one another in the region of the intermediate space between the fan wheel and the fan wheel, and air drawn in by the fan wheel can enter the receiving chamber via the inlet openings.
  • the half-shell housing forms in this way, so to speak, two axially juxtaposed housing sections for the blower and for the motor and the fan - in the form of the flow channel - from.
  • Each housing section is formed in each case half of one of the half-shells.
  • an intermediate wall oriented transversely to the drive axis divides the receiving space, with respect to the drive axis, axially into a first spatial region in which the combustion air flow can be generated, and into a second spatial region in which a cooling air flow cooling the engine can be generated.
  • the intermediate wall separates the receiving space in functional terms.
  • the combustion air flow is generated by means of the fan wheel.
  • the second space area is, for example by means of of the fan wheel that generates cooling airflow. In this way, both the engine can be effectively cooled and the heat exchanger combustion air can be provided.
  • the intermediate wall is preferably arranged on or in the aforementioned intermediate space.
  • the intermediate wall is formed by the impeller.
  • This is, for example, a radial fan with a transverse to the drive axis oriented disc, on the outer circumference parallel to the drive axis aligned fan blades are held.
  • the fuel pump is arranged outside of the half-shell housing, because this facilitates the maintenance of the high-pressure cleaning device. Outside of the half-shell housing, the fuel pump during maintenance in a simplified manner achievable, so that fuel lines from the fuel pump user-friendly separated and / or can be connected to this.
  • the fuel pump is arranged in a half-space, which is bounded by one of the half-shells, which projects in the region of the fuel pump, relative to the drive axis, axially beyond the other half-shell.
  • the fuel pump in the axial direction forms a second end of the assembly.
  • the fuel pump can also be held on the impeller and thereby rotatably coupled to the drive shaft.
  • the half-shell housing preferably has a holding element oriented transversely to the drive axis, on which the fuel pump is held in the axial and / or radial direction with respect to the drive axle.
  • the holding element serves to fix the fuel pump and thus also the assembly relative to the half-shell housing, for example by positive locking.
  • the half-shell housing is barrel-shaped with an at least partially channel-shaped first half-shell and / or second half-shell configured. It has been found that in a barrel-shaped configuration of the half-shell housing a particularly compact design can be achieved.
  • the impeller, the fan and the motor can be arranged at least partially to save space, so to speak, the "axis" of the half-shell housing is aligned coaxially with the drive axis.
  • the half-shell housing may be arranged on the high-pressure cleaner so that its "axis" is aligned horizontally, vertically or otherwise.
  • the first half shell and / or the second half shell is made in one piece and / or made of a plastic material.
  • the high-pressure cleaner becomes simple in construction, and the manufacturing cost can be reduced. It is particularly advantageous when the first half shell and the second half shell are made in one piece and when the first half shell and the second half shell are made of a plastic material.
  • the high-pressure cleaning device preferably comprises a chassis that configures the first half shell and / or the second half shell.
  • the chassis can in particular be made in one piece and advantageously made of a plastic material.
  • FIG. 1 A preferred embodiment of a high-pressure cleaning device according to the invention is in FIG. 1 shown in perspective and there occupied by the reference numeral 10. It has a front 12, a back 13, a left side 14, a right side 15, an upper side 16 and a lower side 17.
  • the high-pressure cleaner 10 includes a in the FIGS. 3 to 7 illustrated lower part 18 with a chassis 20, on the near the back 13 on the left side 14 and the right side 15 two rotatable about a common axis of rotation 22 wheels 23 and 24 are held. Near the front 12, the high pressure cleaning device 10 on the bottom 17 on several support elements, of which only one support leg 25 can be seen. About these support elements and the wheels 23 and 24, the high-pressure cleaner 10 can stand on a footprint 26.
  • the housing 30 comprises a hood 32 in the region of the front side 12 and the front side 12 facing portions of the left side 14 and the right side 15. Further, the housing 30 comprises a Housing wall 34 in the region of the back 13 and the rear side 13 facing portions of the left side 14 and the right side 15th
  • the high-pressure cleaner 10 can be tilted about the support points of the wheels 23 and 24 on the footprint 26 and moved like a sack truck on the footprint 26.
  • a hose drum 38 held on the upper side 16 serves to receive a high-pressure hose, not shown in the drawing, which can be connected to the outlet of the heat exchanger 28.
  • the high-pressure cleaning device 10 has an in FIG. 2 in an exploded view assembly 40 shown on.
  • the assembly 40 comprises a motor 42 with a drive shaft 46 defining a drive axle 44, a pump unit 48, a fan wheel 50, an impeller 52 and a fuel pump 54.
  • the motor 42 is designed as an electric motor and the pump unit 48 designed as an axial piston pump is connected to it flanged so that the motor 42 and the pump unit 48 form a common unit 56.
  • the pump unit 48 forms in the axial direction, based on the drive shaft 44, a first end of the assembly 40.
  • the pump unit 48 To form an axial piston pump, the pump unit 48, a pump head 57, a pump block 58 and a swash plate assembly 59, so that the pump unit 48 in a known manner is driven by the drive shaft 46.
  • the drawing shows a supply line 60 for pressurized liquid and a connection element 61 on the pump head 57 for a discharge line, not shown, to supply the heat exchanger 28 pressurized liquid.
  • the fan wheel 50 is held on the drive unit 46 on the side facing away from the pump unit 48 of the motor 42 immediately upstream of the motor 42, so that it can be driven by the drive shaft 46. It is designed as Axialllibraryerrad.
  • the impeller 50 in the direction of the drive shaft 44 is preceded by the impeller 52, which is designed as a radial fan. It has the shape of a Cupfes and comprises a transverse to the drive shaft 44 oriented support disk 62. At this are held in the circumferential direction of the drive shaft 44 parallel to this extending fan blades 64. The impeller 52 is also held on the drive shaft 46 and driven by this.
  • the fuel pump 54 rotatably coupled by means of a coupling member 66, so that the fuel pump 54 is driven by the drive shaft 46.
  • the fuel pump 54 based on the drive shaft 44, in the axial direction, a second end of the assembly 40.
  • a first fuel line not shown in the drawing
  • the chassis 20 the manufacturing technology is simple and inexpensive integrally made of a plastic material comprises for receiving the assembly 40 an elongated and transverse to a central longitudinal axis 68 of the high-pressure cleaner 10 oriented receptacle 70. This extends in the transverse direction of the high-pressure cleaner 10 approximately between the chassis 20th In the longitudinal direction of the high-pressure cleaning device 10, the receptacle 70 is arranged approximately in the region of its center between the front side 12 and the rear side 13 (FIG. FIGS. 3 to 7 ).
  • a bottom wall 74 delimiting the receptacle 70 on its front side 12 and on its side facing the rear side 13 extends horizontally in sections, whereas it is recessed in the direction of the underside 17 approximately in the region of the center of the high-pressure cleaning device 10, with respect to its longitudinal direction.
  • the bottom wall 74 extends horizontally.
  • the bottom wall 74 extends in a, relative to the width of the high-pressure cleaner 10, narrow wall portion 78 near the edge 72 horizontally.
  • the wall portion 78 is also provided with a plurality of openings 80.
  • the bottom wall 74 extends in the direction of the bottom 18 arcuate. In this way, the chassis 20 forms a groove 82 in the transverse direction of the high-pressure cleaning device 10.
  • a second channel section 90 adjoins the wall section 78. It is deeper and in the longitudinal direction of the high-pressure cleaner 10 wider than the first channel portion 84, and it comprises a wall portion 92 as part of the bottom wall 74, which forms a larger "arc" as the wall portion 86. In the transverse direction of the high-pressure cleaner 10, it is narrow such that it extends from the edge 72 approximately up to one fifth of the distance of the edge 71 from the wall portion 78.
  • a third gutter section 94 forms a narrow transition region between the first gutter section 84 and the second gutter section 90. It is less wide and less deep than the gutter sections 84 and 90 and comprises a lattice-like wall section 96 as part of the bottom wall 74 with a plurality of openings 98 ,
  • the channel 82 is half-round in the region of the three channel sections 84, 90 and 94.
  • the chassis 20 between the wall sections 76 and 78 forms a channel-shaped first half shell 100 of a half-shell housing 102 of the high-pressure cleaner 10.
  • a second half-shell 104 of the half-shell housing 102, which cooperates with the first half-shell 100, will be discussed below.
  • the assembly 40 can be used for mounting the high-pressure cleaning device 10 be, as this particular from the Figures 3 and 7 becomes clear.
  • the structural unit 40 can be inserted into the first half-shell 100 in such a way that the drive axle 44 is aligned with a horizontal orientation parallel to the rotational axis 22 and perpendicular to the central longitudinal axis 68.
  • projections 105 and 106 held in the form of molded pins. They can engage in associated semi-circular recesses 107 and 108, which are formed on the first channel section 84 in the region of the central longitudinal axis 68.
  • Another support on the chassis 20 learns the assembly 40 characterized in that a holding element 112 of the half-shell 100 between the wall portion 78 and the second channel portion 90 engages positively in a gap-shaped receptacle 114 on the fuel pump 54. This causes an axial and radial fixation of the fuel pump 54 and thus also of the assembly 40 relative to the first half shell 100, based on the "proper" orientation of the drive shaft 44th
  • the assembly 40 is inserted into the first half-shell 100, it takes their in FIG. 7 shown location.
  • the motor 42 and the fan 50 are each arranged halfway in the first channel section 84, and the fan 52 is disposed halfway in the second channel section 90.
  • the pump unit 48 is disposed in a space above the wall portion 76, and the fuel pump 54 is disposed in a space above the wall portion 78.
  • the already mentioned second half-shell 104 of the half-shell housing 102 is inexpensive and manufacturing technology simply formed from one-piece plastic molded part. It is essentially configured in the form of an upside-down channel and forms a cover 118 in order to partially cover the assembly 40 inserted into the first half-shell 100 ( Figures 3 . 4 and 6 ).
  • the second half-shell 104 is designed to be complementary to the first half-shell 100, wherein the cover 118 comprises an arch-shaped and substantially semicircular top wall 120:
  • the lid 118 has a first lid portion 122, which is designed to be complementary to the first groove portion 84.
  • the first cover section 122 With a wall section 124 of the ceiling wall 120, the first cover section 122 is able to cover the assembly 40 in the axial direction from the fan wheel 50 approximately to the middle of the motor 42. This means that approximately half of the motor 42 facing the pump unit 48 is not covered by the first cover section 122. In this way, the unit 56 passes through the motor 42 and the pump unit 48 in the axial direction of the drive shaft 44, an opening of the half-shell housing 102, which is designed to be open on its left side 14 facing the front end.
  • the cover 118 also has a second cover section 126, which is designed to be complementary to the second channel section 90 and comprises a wall section 128 as part of the ceiling wall 120.
  • the wall portion 128 is capable of spreading over the impeller 52.
  • the second cover section 126 facing the front side 12, forms a connection element 130 with an outlet opening 132 for combustion air conveyed by the impeller 52.
  • a combustion air duct can be connected in order to supply combustion air to the heat exchanger 28.
  • the second cover portion 126 has a transverse to the drive shaft 44 oriented wall 134 with a plurality of openings 136.
  • the wall 134 can also engage in the gap-shaped receptacle 114 on the fuel pump 54 and so the assembly 40 together fix with the retaining element 112.
  • the support plate 62 of the impeller 52 closes the space formed by the second channel portion 90 and the second cover portion 126 for the impeller 52 in the axial direction to the above the third channel portion 94 formed space area.
  • the first lid portion 122 is connected to the second lid portion 126 via a plurality of webs 138 which, relative to the drive axis 44, extend radially and which are parallel thereto.
  • the webs 138 are arranged in this way above the third channel section 94. A separate portion of the ceiling wall 122 is not present in this area. Between the webs 138 a plurality of inlet openings 140 are formed for sucked by the fan 50 air.
  • the lid 118 still forms two semicircular recesses, which cooperate with the already mentioned recesses 107 and 108 for fixing the projections 105 and 106 and thus the assembly 40 on the half-shell housing 102.
  • the fastening of the second half-shell 104 and the first half-shell 100 takes place here solely by four fastening elements in the form of screws 142, which pass through the first cover section 122 and are anchored to the chassis 20 ( FIG. 3 ).
  • the use of the half-shell housing 102 with the two half-shells 100 and 104 allows a compact construction of the high-pressure cleaner 10 and facilitates the assembly of the assembly 40 on the high-pressure cleaner 10 and its maintenance.
  • the pump unit 48 and the fuel pump 54 are not in the receiving space 144 formed between the half-shells 100 and 104 (in FIG. 7 as half space recognizable), but they are arranged outside of the half-shell housing 102. Since maintenance of the high-pressure cleaner 10 occasionally requires work on the pump unit 48 and / or on the fuel pump 54, the pump unit 48 and the fuel pump 54 can be reached by a user in this manner.
  • the half-shell housing 102 provides effective protection for the impeller 52, the fan 50 and the fan wheel 50 facing half of the motor 42 from external influences and immediate access by a user. There is little or no need for maintenance at these components of the assembly 40, so that opening of the half-shell housing 102 is only very rarely required.
  • the high-pressure cleaning device 10 it has been found to be beneficial that are formed by the above-described embodiment of the half-shell housing 102 so to speak, two axially spaced housing sections, namely a fan housing 146 for the impeller 52 and a flow channel 148 for the fan 50 and the motor 42nd ( FIG. 6 ).
  • the blower housing 146 is essentially limited by the wall sections 92 and 126, the wall 134, the connecting element 130 and the support disk 62 of the blower 52.
  • Combustion air for the heat exchanger 28 can be sucked from the interior of the high-pressure cleaner 10 under the hood 32 and through the openings 80 of the wall portion 78 through from the atmosphere. This ensures that the heat exchanger 28 at least partially fresh air is supplied from the atmosphere, which has proven in practice to be favorable for its operation.
  • air drawn in by the impeller 52 may pass through the apertures 136 of the wall 134 or flow past the retainer 112, and the combustion air flow may exit the fan housing 146 via the exit aperture 132, as previously noted.
  • the carrier disk 62 forms a certain seal of the fan housing 146 in the axial direction, relative to the drive axle 44.
  • the half shell housing 102 comprises the third channel section 94 and the corresponding section of the cover 118, so that a gap 150 is formed between the fan wheel 52 and the fan wheel 50 .
  • sucked cooling air can enter the half-shell housing 102 on the one hand through the openings 98 of the wall portion 96 from the atmosphere and on the other from the interior of the high-pressure cleaner 10 below the hood 32 through the inlet openings 140 between the webs 138. Also in this case ensures that the sucked air from the fan 50 fresh air is supplied from the atmosphere. It has been found that effectively a cooling air flow for the motor 42 can be provided, so that overheating of the same can be avoided.
  • the contour of the half-shell housing 102 is modeled on the outer contour of the fan wheel 50 and the motor 42, so that the half-shell housing 102 forms the already mentioned flow channel 148 for the cooling air flow that can be generated by the fan wheel 50 in this area . Because the half-shell housing 102 is open on its front side facing the left side 14, the cooling air can escape from the half-shell housing 102. Through the openings 88 of the wall portion 86 ensures that at least a portion of the cooling air escapes into the atmosphere. As a result, a heat accumulation in the flow channel 148 and in the interior of the high-pressure cleaning device 10 under the hood 32 can be effectively avoided.

Claims (18)

  1. Appareil de nettoyage haute-pression (10) comprenant un échangeur de chaleur (28), qui peut être chauffé et est destiné à échauffer un liquide pouvant être délivré par l'appareil de nettoyage haute-pression (10), un moteur (42) avec un arbre d'entraînement (46) définissant un axe d'entraînement (44), un groupe de pompe (48) pour augmenter la pression de liquide, une roue de soufflante (52) destinée à produire un écoulement d'air de combustion, ainsi qu'une pompe de combustible (54) pour le refoulement d'un combustible destiné à l'échangeur de chaleur (28),
    appareil dans lequel le groupe de pompe (48), la roue de soufflante (52) et la pompe de combustible (54) sont agencés le long de l'axe d'entraînement (44) et peuvent être entraînés par l'arbre d'entraînement (46), et forment, en commun avec le moteur (42), une unité de construction (40),
    l'appareil de nettoyage haute pression (10) comprenant un carter à demi-coques (102) avec une première demi-coque (100) et une deuxième demi-coque (104), qui définissent entre elles un logement de réception (144) dans lequel est logée, au moins en partie, l'unité de construction (40),
    et le groupe de pompe (48) étant agencé au moins en partie à l'extérieur du carter à demi-coques (102).
  2. Appareil de nettoyage haute-pression selon la revendication 1, caractérisé en ce que l'appareil de nettoyage haute pression (10) comprend, en tant que partie intégrante de l'unité de construction (40), une roue de ventilateur (50) agencée le long de l'axe d'entraînement (44) et pouvant être entraînée par l'arbre d'entraînement (46), en vue de produire un écoulement d'air de refroidissement, qui refroidit le moteur (42).
  3. Appareil de nettoyage haute-pression selon la revendication 2, caractérisé en ce que la roue de ventilateur (50) est réalisée en tant que roue de ventilateur axial (50) maintenue sur l'arbre d'entraînement (46), et est agencée axialement en amont du moteur (42) en se référant à l'axe d'entraînement (44).
  4. Appareil de nettoyage haute-pression selon la revendication 2 ou la revendication 3, caractérisé en ce que la roue de ventilateur (50) et le moteur (42) sont agencés, au moins en partie, dans le logement de réception (144).
  5. Appareil de nettoyage haute-pression selon la revendication 4, caractérisé en ce que le carter à demi-coques (102) forme dans la zone de la roue de ventilateur (50) et du moteur (42), un canal d'écoulement (148), et en ce que dans le carter à demi-coques (102) sont formées, en se référant à l'axe d'entraînement (44), axialement en amont de la roue de ventilateur (50), au moins une ouverture d'entrée (98, 140) pour de l'air aspiré par la roue de ventilateur (50), et axialement en aval, au moins une ouverture de sortie pour l'écoulement d'air de refroidissement.
  6. Appareil de nettoyage haute-pression selon l'une des revendications précédentes, caractérisé en ce que le groupe de pompe (48) forme, dans la direction axiale, en se référant à l'axe d'entraînement (44), une première extrémité de l'unité de construction (40).
  7. Appareil de nettoyage haute-pression selon l'une des revendications précédentes, caractérisé en ce que la roue de soufflante (52) est agencée dans le logement de réception (144).
  8. Appareil de nettoyage haute-pression selon la revendication 7, caractérisé en ce que dans le carter à demi-coques (102) est formée, axialement en amont de la roue de soufflante (52) en se référant à l'axe d'entraînement (44), au moins une ouverture d'entrée (136) pour de l'air aspiré par la roue de soufflante (52), et/ou en ce que dans le carter à demi-coques (102) est formée au moins une ouverture de sortie (132) pour l'écoulement d'air de combustion.
  9. Appareil de nettoyage haute-pression selon la revendication 8, caractérisé en ce que le carter à demi-coques (102) forme un élément de raccordement (130) pour un canal d'air de combustion, qui débouche dans le logement de réception (144) par l'intermédiaire de l'ouverture de sortie (132).
  10. Appareil de nettoyage haute-pression selon l'une des revendications précédentes, caractérisé en ce que la roue de soufflante (52) est réalisée en tant que roue de ventilateur radial (52) maintenue sur l'arbre d'entraînement (46), et est agencée, dans la direction axiale, en se référant à l'axe d'entraînement (44), sur le côté éloigné du moteur (42) d'une roue de ventilateur (50) associée au moteur (42).
  11. Appareil de nettoyage haute-pression selon la revendication 10, caractérisé en ce qu'entre la roue de soufflante (52) et la roue de ventilateur (50), dans la direction axiale, en se référant à l'axe d'entraînement (44), est formé un espace intermédiaire (150), qui est délimité par le carter à demi-coques (102) dans la direction périphérique de l'axe d'entraînement (44), et dans lequel peut pénétrer de l'air aspiré par la roue de ventilateur (50), à travers plusieurs ouvertures d'entrée (98, 140) formées dans le carter à demi-coques (102) dans la direction périphérique de l'axe d'entraînement (44).
  12. Appareil de nettoyage haute-pression selon l'une des revendications précédentes, caractérisé en ce qu'une paroi intermédiaire (62) orientée transversalement à l'axe d'entraînement (44), subdivise axialement le logement de réception (144), en se référant à l'axe d'entraînement (44), en une première zone de logement dans laquelle peut être produit l'écoulement d'air de combustion, et en une deuxième zone de logement dans laquelle peut être produit un écoulement d'air de refroidissement, qui refroidit le moteur (42).
  13. Appareil de nettoyage haute-pression selon la revendication 12, caractérisé en ce que la paroi intermédiaire (62) est formée par la roue de soufflante (52).
  14. Appareil de nettoyage haute-pression selon l'une des revendications précédentes, caractérisé en ce que la pompe de combustible (54) est agencée à l'extérieur du carter à demi-coques (102).
  15. Appareil de nettoyage haute-pression selon l'une des revendications précédentes, caractérisé en ce que la pompe de combustible (54) forme, dans la direction axiale, en se référant à l'axe d'entraînement (44), une deuxième extrémité de l'unité de construction (40).
  16. Appareil de nettoyage haute-pression selon l'une des revendications précédentes, caractérisé en ce que le carter à demi-coques (102) présente un élément de support (112) orienté transversalement à l'axe d'entraînement (44), et sur lequel est maintenue dans une direction axiale et/ou radiale en se référant à l'axe d'entraînement (44), la pompe de combustible (54).
  17. Appareil de nettoyage haute-pression selon l'une des revendications précédentes, caractérisé en ce que le carter à demi-coques (102) est d'une configuration en forme de tonneau et comporte une première demi-coque (100) et/ou une deuxième demi-coque (104) au moins partiellement en forme de goulotte.
  18. Appareil de nettoyage haute-pression selon l'une des revendications précédentes, caractérisé en ce que l'appareil de nettoyage haute pression (10) comprend un châssis (20), qui forme la première demi-coque (100) et/ou la deuxième demi-coque (104).
EP09737398.9A 2009-10-14 2009-10-14 Appareil de nettoyage haute pression Active EP2488309B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/063434 WO2011044937A1 (fr) 2009-10-14 2009-10-14 Appareil de nettoyage haute pression

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EP2488309A1 EP2488309A1 (fr) 2012-08-22
EP2488309B1 true EP2488309B1 (fr) 2014-06-04

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US (1) US9283596B2 (fr)
EP (1) EP2488309B1 (fr)
CN (1) CN102574164B (fr)
DK (1) DK2488309T3 (fr)
WO (1) WO2011044937A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024088755A1 (fr) 2022-10-26 2024-05-02 Alfred Kärcher SE & Co. KG Dispositif de nettoyage haute pression

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DK2771134T3 (en) * 2011-10-28 2016-06-06 Kaercher Gmbh & Co Kg Alfred Pressure Washer
DE102015117079A1 (de) * 2015-10-07 2017-04-13 Alfred Kärcher Gmbh & Co. Kg Luftgekühltes Hochdruckreinigungsgerät
DE102018101805B4 (de) * 2018-01-26 2019-09-26 Josef Kränzle GmbH & Co. KG Reinigungseinheit

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US3477688A (en) 1966-10-31 1969-11-11 Foster Mfg Co Inc Fluid line coupling
DE3617556A1 (de) 1986-05-24 1987-12-03 Friedrich Epple Gmbh & Co Hoch Hochdruck-reinigungsgeraet
EP0376843B1 (fr) * 1988-12-29 1994-06-08 Toto Ltd. Bain tourbillonnant muni de moyens de réglage des injecteurs d'eau chaude
US5100346A (en) 1991-03-15 1992-03-31 Cardell Corporation Micropin connector system
DE9303648U1 (fr) * 1993-03-12 1993-06-24 Friedrich Epple Gmbh & Co Hochdruckreinigungsgeraete Und Spezialreinigungsmaschinen Kg, 6942 Moerlenbach, De
DE4445521C1 (de) 1994-12-20 1995-12-07 Kaercher Gmbh & Co Alfred Pumpe für ein Hochdruckreinigungsgerät
DE19607882C1 (de) 1996-03-01 1997-02-27 Kaercher Gmbh & Co Alfred Hochdruckreinigungsgerät
DE19729509A1 (de) 1997-07-10 1999-01-14 Kaercher Gmbh & Co Alfred Hochdruckreinigungsgerät
US6695235B2 (en) 2001-10-19 2004-02-24 Coleman Powermate, Inc. Foldable power washer
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2024088755A1 (fr) 2022-10-26 2024-05-02 Alfred Kärcher SE & Co. KG Dispositif de nettoyage haute pression
DE102022128398A1 (de) 2022-10-26 2024-05-02 Alfred Kärcher SE & Co. KG Hochdruckreinigungsgerät

Also Published As

Publication number Publication date
DK2488309T3 (da) 2014-07-14
CN102574164A (zh) 2012-07-11
US9283596B2 (en) 2016-03-15
WO2011044937A1 (fr) 2011-04-21
US20130074884A1 (en) 2013-03-28
CN102574164B (zh) 2015-03-18
EP2488309A1 (fr) 2012-08-22

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