WO2024088755A1 - Dispositif de nettoyage haute pression - Google Patents

Dispositif de nettoyage haute pression Download PDF

Info

Publication number
WO2024088755A1
WO2024088755A1 PCT/EP2023/078089 EP2023078089W WO2024088755A1 WO 2024088755 A1 WO2024088755 A1 WO 2024088755A1 EP 2023078089 W EP2023078089 W EP 2023078089W WO 2024088755 A1 WO2024088755 A1 WO 2024088755A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
adapter element
cleaning device
pressure cleaning
housing
Prior art date
Application number
PCT/EP2023/078089
Other languages
German (de)
English (en)
Inventor
Achim GRIEBEL
Andreas HÄGELE
David Ruckwied
Martin EFFERL
Original Assignee
Alfred Kärcher SE & 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 Kärcher SE & Co. KG filed Critical Alfred Kärcher SE & Co. KG
Publication of WO2024088755A1 publication Critical patent/WO2024088755A1/fr

Links

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
    • B08B3/02—Cleaning by the force of jets or sprays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/51—Building or constructing in particular ways in a modular way, e.g. using several identical or complementary parts or features

Definitions

  • the invention relates to a high-pressure cleaning device with a pump for conveying a cleaning liquid, a motor for driving the pump, a fuel-operated continuous-flow heater for heating the cleaning liquid and a fan that can be driven by the motor for supplying combustion air to the continuous-flow heater, wherein the motor has a motor housing and a motor shaft protruding from the motor housing, and wherein the fan has a fan housing in which a fan wheel coupled to the motor shaft is arranged.
  • Such high-pressure cleaning devices make it possible to pressurize a cleaning liquid, preferably water, using a pump and to heat it using a fuel-operated flow heater.
  • the heated and pressurized cleaning liquid can be directed at an object to be cleaned.
  • the flow heater is usually operated using a gaseous or liquid fuel and can have a coiled tube that is heated by a burner and through which the cleaning liquid is passed. Combustion air can be supplied to the flow heater using a fan that can be driven by the motor.
  • Such high-pressure cleaning devices are known, for example, from DE 30 01 571 A1 and EP 2 488 309 B1.
  • the motor and the blower are usually matched to one another in such a way that the blower housing can be connected directly to the motor housing and the blower wheel can be connected directly to an end section of the motor shaft that protrudes from the motor housing.
  • different variants of high-pressure cleaning devices are often used, which differ, for example, in the size of the blower housing and the blower wheel or in the power, speed and type of cooling of the motors. This makes it necessary to provide a variety of blower variants, each adapted to a specific engine variant. This significantly increases manufacturing and storage costs.
  • the object of the present invention is therefore to further develop a heatable high-pressure cleaning device of the type mentioned at the outset in such a way that the manufacturing and storage costs for different variants of the high-pressure cleaning device can be reduced.
  • the high-pressure cleaning device makes it possible to significantly reduce the number of blower variants that need to be kept ready for different variants of the high-pressure cleaning device, since the blowers do not each have to be adapted to a specific motor. Rather, the blowers are adapted to the motors using a first adapter element and a second adapter element, which form the links between the blowers and the motors.
  • identically designed blowers can be connected to different motors, since the blowers are adapted to the motors using the adapter elements.
  • identically designed motors can also be connected to different blowers. The number of blower and motor variants that need to be kept ready can thus be significantly reduced, and this in turn makes it possible to reduce the manufacturing and storage costs for different variants of the high-pressure cleaning device.
  • the first adapter element is mounted on an end section of the motor shaft protruding from the motor housing, forming a rotationally fixed connection in the axial direction, in particular pressed on, and can be secured to the motor shaft in the axial direction.
  • the first adapter element can be placed in the axial direction on the end section protruding from the motor housing, creating a rotationally fixed connection between the first adapter element and the motor shaft.
  • the first adapter element can be pressed onto the end section of the motor shaft, creating a rotationally fixed connection. In order to prevent the first adapter element placed on the motor shaft from coming loose from the motor shaft, it can be secured to the motor shaft in the axial direction.
  • the axial fixing of the first adapter element to the end section of the motor shaft protruding from the motor housing can be achieved, for example, by means of a screw connection.
  • the end section of the motor shaft protruding from the motor housing has an axially parallel blind bore with an internal thread into which a fastening screw can be screwed that penetrates the first adapter element in the axial direction.
  • the end section of the motor shaft protruding from the motor housing has form-locking elements which are evenly distributed over the circumference of the end section and aligned parallel to a motor axis to form a form-locking connection with the first adapter element.
  • the form-fitting elements can, for example, be designed in the form of grooves aligned parallel to the motor axis.
  • the first adapter element can have an axially aligned through-hole and can be pressed onto the end section of the motor shaft protruding from the motor housing. When pressed onto the end section, internal grooves can form on the wall of the through-hole that are complementary to the external grooves of the motor shaft.
  • particularly simple assembly of the impeller on the first adapter element is achieved in that the impeller has a hub which can be placed on the first adapter element in the axial direction to form a rotationally fixed connection and can be secured to the first adapter element in the axial direction.
  • the impeller can be placed in a simple manner in the axial direction on a connecting section of the first adapter element to form a rotationally fixed connection between the first adapter element and the impeller, and in order to prevent the impeller from accidentally becoming detached from the first adapter element, the hub of the impeller can be secured to the first adapter element in the axial direction.
  • the hub of the impeller can be fixed to the first adapter element, for example, by means of a fastening screw.
  • both the fan wheel and the first adapter element can be secured to the end section of the motor shaft protruding from the motor housing by means of the fastening screw.
  • the hub can be hollow and have a radially inward-facing collar that rests against an end section of the first adapter element facing away from the motor shaft, and the fastening screw can pass through the collar and the first adapter element in the axial direction and be screwed into an axially aligned blind hole provided with an internal thread in the end section of the motor shaft.
  • the first adapter element has projections that are evenly distributed over its circumference and point radially outwards, which extend into complementary recesses in the hub of the impeller.
  • the second adapter element forms an adapter ring that can be placed on the motor housing and can be detachably connected to the motor housing.
  • the adapter ring can be screwed to the motor housing.
  • the blower housing preferably has a first housing part and a second housing part, wherein the two housing parts can be detachably connected to one another and wherein the first housing part can be detachably connected to the second adapter element.
  • first housing part can be screwed to the second adapter element.
  • simple assembly of the first housing part on the second adapter element is achieved in that the second adapter element has a plurality of retaining pins facing the first housing part, onto which the first housing part can be placed.
  • the first housing part has a plurality of retaining bushes, each of which can be placed on a retaining pin.
  • the retaining pins are conveniently aligned axially.
  • the retaining pins are hollow, whereby fastening screws connecting the first housing part to the second adapter element can be screwed into the retaining pins. It is advantageous if the first housing part has retaining bushes, each of which can be plugged onto a retaining pin, wherein the screw heads of the fastening screws each rest against a retaining bush with a washer in between.
  • the motor not only drives the pump and the blower but also a fuel pump, which can be used to supply the instantaneous water heater with liquid fuel, for example heating oil or diesel fuel.
  • the blower wheel is coupled to a drive shaft of the fuel pump via a driver.
  • the blower wheel which can be set in rotation by the motor, is coupled to the drive shaft of the fuel pump via a driver, so that the rotary movement of the blower wheel can be transferred to the drive shaft of the fuel pump via the driver.
  • the first adapter element preferably consists of metal, for example of a die-cast material, in particular of an aluminum die-cast material.
  • the second adapter element is preferably made of a plastic material.
  • Figure 1 a first perspective view of a high-pressure cleaning device
  • Figure 2 a second perspective view of the high-pressure cleaning device, wherein in Figure 2 a fuel tank as well as a control device and a hood of the high-pressure cleaning device are hidden to achieve a better overview;
  • Figure 3 a perspective view in the form of an exploded drawing of a blower which is connected to a motor of the high-pressure cleaning device from Figure 1 via a first adapter element and a second adapter element;
  • Figure 4 an enlarged view of detail X of Figure 3;
  • Figure 5 a side view of the high-pressure cleaning device
  • Figure 6 a partial sectional view of the high pressure cleaning device of Figure 1 taken along line 6-6 in Figure 5;
  • Figure 7 a partial sectional view of the high pressure cleaning device of Figure 1 taken along line 7-7 in Figure 5.
  • the drawing schematically shows an advantageous embodiment of a high-pressure cleaning device according to the invention, which is designated overall by the reference number 10.
  • the high-pressure cleaning device 10 comprises two wheels 12, 14 and a steering roller 16, which are rotatably mounted on a base plate 18.
  • a main direction of movement of the high-pressure cleaning device 10 is illustrated in Figure 1 by the arrow 20.
  • the base plate 18 is screwed to a tubular frame 22, which forms a front frame section 24 with respect to the main direction of movement 20.
  • the front frame section 24 is U-shaped and is aligned essentially vertically with respect to the horizontal position of use of the high-pressure cleaning device 10 shown in the drawing.
  • the front frame section 24 is followed by two longitudinal frame sections 26, 28 which are spaced apart from one another and aligned parallel to the main direction of movement 20 and which are each connected via a connecting section 30, 32 are rigidly connected to a leg 34 or 36 of a U-shaped rear frame section 38.
  • the legs 34, 36 are essentially vertically aligned and rigidly connected to one another via a web 40 aligned perpendicular to the main direction of movement 20.
  • a handle bar 42 is connected to the rear frame section 38, opposite to the main direction of movement 20, which has two bar legs 44, 46 and a bar web 48 aligned transversely to the main direction of movement 20, via which the two bar legs 44, 46 are connected to one another in one piece.
  • a bar connecting section 50 or 52 is connected to the ends of the bar legs 44, 46 facing away from the bar web 48.
  • the bar connecting sections 50, 52 are each screwed to a leg 34 or 36 of the rear frame section 38.
  • a bracket 54 is fixed to the base plate 18 between the front frame section 24 and the rear frame section 38.
  • the bracket 54 carries a structural unit 56 which has a motor 58, a pump 60 driven by the motor 58, a fan 62 also driven by the motor 58 and a fuel pump 63.
  • the motor 58 is arranged between the pump 60 and the fan 62 and is designed as an electric motor. It has a motor housing 64 in which a motor shaft 68 connected to a rotor 66 is rotatably mounted.
  • the rotor 66 is surrounded in the usual way by a stator 70.
  • the pump 60 is flanged to the motor housing 64 on the side facing away from the fan 62 and is designed as a crankshaft pump in the embodiment shown.
  • a cleaning fluid preferably water, can be pressurized using the pump 60.
  • combustion air can be supplied to a continuous flow heater 72, which is operated with liquid fuel and is arranged behind the rear frame section 38 with respect to the main direction of movement 20.
  • the fan 62 is in flow connection with the continuous flow heater 72 via an air guide hose 74.
  • a fuel tank 76 is arranged between the structural unit 56 and the front frame section 24.
  • the fuel tank 76 serves to store the liquid fuel, for example heating oil or diesel fuel, with the aid of which the continuous flow heater 72 is operated.
  • a control device 78 is arranged above the structural unit 56, which is covered by a hood 82 with the exception of a control panel 80.
  • the hood 82 has an opening 84 through which the user can access the control panel 80 of the control device 78.
  • An operating element 86 is arranged on the control panel 80, which in the illustrated embodiment is designed as a switch button. The user can switch the motor 58 on and off using the operating element 86. In addition, the operating element 86 is used to select an operating mode of the motor 58.
  • the fan 62 has a fan housing 88, which is formed by a first housing part 90 facing the motor 58 and a second housing part 92 facing away from the motor 58.
  • the two housing parts 90, 92 are each designed as a housing half-shell and can be detachably connected to one another, in particular screwed together.
  • a fan wheel 94 is arranged in the fan housing 88, which has a hollow hub 98 aligned coaxially with a motor axis 96, which is integrally connected to a support disk 100.
  • a plurality of fan blades 102 are held on the support disk 100, which are aligned parallel to the motor axis 96 and can be rotated by the motor 58 about the motor axis 96 in order to suck ambient air into the fan housing 88 via a ventilation grille 104 arranged on the second housing part 92 and to supply this air to the continuous flow heater 72 via the air guide hose 74.
  • the fan 62 is connected to the motor 58 by means of a first adapter element 106 and a second adapter element 108. This is particularly clear from Figure 3.
  • the first adapter element 106 forms a connecting link via which the motor shaft 68 is connected in a rotationally fixed manner to the hub 98 of the fan 62.
  • the motor shaft 68 has an end section in the form of a shaft stub 110 that protrudes from the motor housing 64 in the direction of the fan 62 and tapers via a radially inwardly directed step 112.
  • the step 112 is followed by form-locking elements in the form of grooves 114 aligned parallel to the motor axis 96 that are evenly distributed over the circumference of the shaft stub 110 in the direction of the fan 62.
  • the first adapter element 106 has a central opening 116 aligned coaxially with the motor axis 96 and can be pressed onto the shaft stub 110 in the axial direction to form a rotationally fixed connection between the shaft stub 110 and the first adapter element 106.
  • internal grooves 118 are formed on the wall of the central opening 116 that are complementary to the external grooves 114 of the shaft stub 110 and form a positive connection with the external grooves 114 of the shaft stub 110.
  • the step 112 of the shaft stub 110 forms a stop surface against which the first adapter element 106 rests, wherein a collar 120 of the first adapter element 106, which is aligned coaxially with the motor axis 96, surrounds in a form-fitting manner a section of the shaft stub 110 which adjoins the step 112 in the direction of the motor housing 64.
  • the first adapter element 106 has a plurality of retaining wings 122 that are evenly distributed over the circumference of the first adapter element 106 and directed radially outward.
  • the hollow hub 98 can be placed in the axial direction on the first adapter element 106, wherein the retaining wings 122 each penetrate into an inner recess 124 of the hub 98 that is designed complementarily to the retaining wings 122, so that a rotationally fixed connection is formed between the first adapter element 106 and the hub 98.
  • the recesses 124 are adjoined by an inwardly directed collar 126 of the hub 98, which comes to rest on an end section of the first adapter element 106 facing away from the collar 120.
  • a fastening screw 128 passes through the collar 126 of the hub 98 and the central opening 116 of the first adapter element 106 and penetrates into a blind hole 130 of the stub shaft 110 that is aligned coaxially with the motor axis 96.
  • the blind hole 130 has an internal thread so that the fastening screw 128 can be screwed into the blind hole 130, with a washer 132 coming to rest on the collar 126 and the free end of the first adapter element 106 so that the hub 98 and the first adapter element 106 can be fixed in the axial direction to the stub shaft 110 by means of the fastening screw 128.
  • the second adapter element 108 forms a link via which the motor housing 64 is connected to the fan housing 88.
  • the second adapter element 108 is designed in the form of an adapter ring aligned coaxially to the motor axis 96, which can be placed on an end section 136 of the motor housing 64 facing the fan 62 and screwed to the motor housing 64 by means of fastening screws 138. In the embodiment shown, two diametrically opposed fastening screws 138, 139 are used.
  • the adapter ring 134 On its side facing the fan 62, the adapter ring 134 has four retaining pins 140, 142, 144, 146 that are evenly distributed around the circumference and are of identical design.
  • the first housing part 90 of the fan housing 88 has four retaining bushes that are complementary to the retaining pins 140, 142, 144, 146, whereby in Figure 3 three retaining bushes 148, 150, 151 are shown.
  • the retaining pins 140, 142, 144, 146 are hollow.
  • the first housing part 90 can be screwed to the retaining pins 140, 142, 144, 146 using fastening screws 152, whereby the fastening screws 152 are self-tapping and can be screwed into the retaining pins 140, 142, 144, 146 with a washer 154 in between, which comes to rest on a retaining bushing that receives a retaining pin 140, 142, 144, 146.
  • the assembly 56 has, in addition to the motor 58, the pump 60 and the blower 62, the fuel pump 63, with the aid of which fuel from the fuel tank 76 can be supplied to the continuous flow heater 72.
  • the fuel pump 63 is arranged on the side of the blower housing 88 facing away from the motor 58.
  • a driver 158 is connected to the hub 98 of the blower wheel 94.
  • the hub 98 has a receptacle 160 on the side of the collar 126 facing away from the first adapter element 106, with radially inwardly directed ribs 162 which interact with the driver 158 to set a drive shaft 164 of the fuel pump 63 in rotation.
  • the two adapter elements 106, 108 allow the fan 62 to be mounted very easily on the motor 58. Different fan variants can be mounted easily on the motor 58, whereby the fans do not have to be adapted to the motor housing 64 and the motor shaft 68. Rather, such an adaptation is carried out using the two adapter elements 106, 108.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention concerne un dispositif de nettoyage haute pression (10) comprenant une pompe (60), un moteur (58), un dispositif de chauffage à écoulement (72) actionné par carburant et un ventilateur (62) pour fournir de l'air de combustion au dispositif de chauffage à écoulement, le moteur (58) ayant un carter de moteur (64) et un arbre de moteur (68), et le ventilateur (62) ayant un carter de ventilateur (88) et une turbine de ventilateur (94). Afin de développer le dispositif de nettoyage haute pression (10) de telle sorte que les coûts de production et de stockage pour différentes variantes peuvent être réduits, l'invention propose que la turbine de ventilateur (94) soit reliée de manière non rotative à l'arbre de moteur (68) au moyen d'un premier élément adaptateur (106), et que le carter de ventilateur (88) soit maintenu sur le carter de moteur (64) au moyen d'un second élément adaptateur (108).
PCT/EP2023/078089 2022-10-26 2023-10-10 Dispositif de nettoyage haute pression WO2024088755A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022128398.4A DE102022128398A1 (de) 2022-10-26 2022-10-26 Hochdruckreinigungsgerät
DE102022128398.4 2022-10-26

Publications (1)

Publication Number Publication Date
WO2024088755A1 true WO2024088755A1 (fr) 2024-05-02

Family

ID=88372497

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2023/078089 WO2024088755A1 (fr) 2022-10-26 2023-10-10 Dispositif de nettoyage haute pression

Country Status (2)

Country Link
DE (1) DE102022128398A1 (fr)
WO (1) WO2024088755A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3001571A1 (de) 1980-01-17 1981-07-23 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgeraet
EP2488309B1 (fr) 2009-10-14 2014-06-04 Alfred Kärcher GmbH & Co. KG Appareil de nettoyage haute pression
EP3163091A1 (fr) * 2015-10-29 2017-05-03 Valeo Systemes Thermiques Ensemble support moteur et installation de chauffage, de ventilation et/ou de climatisation pour véhicule automobile correspondante
EP3470683A1 (fr) * 2017-10-13 2019-04-17 Ametek, Inc. Ensemble moteur-ventilateur à propriétés de circulation et de réduction de bruit améliorées
DE102018202487A1 (de) * 2018-02-19 2019-08-22 Ziehl-Abegg Se Ventilator und Verfahren zur Montage eines Ventilators

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8707969U1 (de) 1987-06-04 1988-09-29 Siemens AG, 1000 Berlin und 8000 München Gebläserad
WO2012119643A1 (fr) 2011-03-07 2012-09-13 Alfred Kärcher Gmbh & Co. Kg Appareil de nettoyage haute pression

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3001571A1 (de) 1980-01-17 1981-07-23 Alfred Kärcher GmbH & Co, 7057 Winnenden Hochdruckreinigungsgeraet
EP2488309B1 (fr) 2009-10-14 2014-06-04 Alfred Kärcher GmbH & Co. KG Appareil de nettoyage haute pression
EP3163091A1 (fr) * 2015-10-29 2017-05-03 Valeo Systemes Thermiques Ensemble support moteur et installation de chauffage, de ventilation et/ou de climatisation pour véhicule automobile correspondante
EP3470683A1 (fr) * 2017-10-13 2019-04-17 Ametek, Inc. Ensemble moteur-ventilateur à propriétés de circulation et de réduction de bruit améliorées
DE102018202487A1 (de) * 2018-02-19 2019-08-22 Ziehl-Abegg Se Ventilator und Verfahren zur Montage eines Ventilators

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