Classifications

• • 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
  • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
  • E03B5/00—Use of pumping plants or installations; Layouts thereof
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
  • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B23/00—Pumping installations or systems
  • F04B23/02—Pumping installations or systems having reservoirs
  • F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
  • F04B23/028—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir the pump being mounted on top of the reservoir
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D13/00—Pumping installations or systems
  • F04D13/16—Pumping installations or systems with storage reservoirs
• • 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
  • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

• the invention relates to a pumping device with a drive motor and a fluid pump coupled thereto, which has a pump housing with at least one suction-side inlet channel and a pressure-side outlet channel, and with a pressure vessel which is communicatively connected to the outlet channel of the fluid pump.
• Such pumping devices which are also referred to as domestic water machines, are known from the prior art. They serve to convey a fluid, in particular drinking or service water from a source or from a storage vessel into a water supply network, which may be provided, for example, to supply a building and / or a garden.
• the pumping device has a drive motor, which can be designed, in particular, as a mains-operated electric motor and has a fluid pump coupled thereto.
• the fluid pump is typically embodied as a single-stage or multistage self-priming centrifugal pump and comprises a pump wheel accommodated in a pump housing, which can be driven by the drive motor.
• Attached to the pump housing are a suction-side inlet channel and a pressure-side outlet channel, which allow an inflow of fluid to the pump wheel and an outflow of the fluid pressurized by the pump wheel, for example into the water line network.
• a pressure vessel communicatively communicating with the pressurized fluid.
• the pressure vessel is provided in order to avoid frequent recurring switching on and off of the drive motor due to the pressure loss occurring in the event of leaks in the water supply network.
• the pressure vessel which is designed as an accumulator, provides a limited, by means of the fluid pump under pressure law- Fluid volume available that ensures a substantially constant water pressure at least when flowing small amounts of fluid into the water network.
• flexible lines for hydraulic or electrical coupling and to compensate for mechanical position tolerances are provided between the fluid pump and the pressure tank.
• the object underlying the invention is to provide a pumping device which ensures a simplified production and a more reliable function.
• a pump device of the type mentioned in which at least two functional modules are provided, in which the drive motor with the fluid pump on the one hand and the pressure vessel on the other hand are integrated, wherein the functional modules are arranged spatially compact to each other and interconnected. Between the drive motor with the fluid pump and the pressure vessel respectively defined interfaces for a fluid-carrying connection are provided, which can be without additional, especially flexible adapter parts, as used in known pumping devices to compensate for tolerances, and thus the desired spatially compact arrangement of Ensure functional assemblies to each other.
• fluid line sections of a fluid line extending between the at least two functional assemblies are connected to one another by at least one fluid-tight plug connection.
• plug connections which ensure a fluid-tight connection between a plug-in receptacle and a pipe section formed for insertion into the plug-in receptacle already at the conclusion of the plug-in operation
• an advantageous assembly of the functional modules can be achieved.
• the Plug-in receptacle and the correspondingly executed pipe section of the functional assemblies to be joined which in particular can each be integrally formed on the functional modules, are plugged together in the final assembly of the pump device and form the fluid-tight connection during plugging operation.
• This can be achieved, in particular, by providing corresponding sealing surfaces and sealing means, such as sealing rings, on the plug-in receptacle and the pipe section, which engage in operative connection during the plugging process.
• the function modules are assigned a plug-in receptacle and / or a pipe section for a coaxial, in particular releasable plug connection in the direction of a central longitudinal axis of a limited by the plug receptacle and the pipe section volume portion.
• This can be a space-economical and reliable sealing arrangement of the sealing means, in particular circularly circulating around the limited by the plug-in receptacle and the pipe section volume section, can be realized.
• the pipe section and the plug-in receptacle can have a circular, non-round or polygonal cross section in a cross-sectional plane arranged orthogonally to the central longitudinal axis of the volume section.
• plugging operation between plug-in areas of the pipe section and the plug-in receptacle takes place at least substantially in that direction in which the fluid can flow through the plug-in area.
• the plug-in receptacle and the plug-in area of the pipe section are provided for a detachable plug connection. This facilitates, for example, in case of repair, the replacement of individual functional modules, so that the pump device can be repaired inexpensively in case of damage.
• the plug connection is assigned at least one securing device for a mechanical locking.
• the mechanical coupling of the plug-in receptacle with the pipe section can be effected in particular by a U-shaped securing clip, which is pushed orthogonal to the central longitudinal axis of the plug-in receptacle and the pipe section limited volume portion in the mating region and causes a positive fit.
• a reliable mechanical coupling can be ensured, which is preferably produced without tools and / or solvable.
• the fluid line comprises at least one dimensionally stable pipeline as the fluid conduit section.
• dimensionally stable pipelines By using dimensionally stable pipelines, a compact design of the pumping device can be achieved, since dimensionally stable, preformed pipelines enable a greater deflection of fluid streams in a smaller space compared to flexible hoses, which must not fall below a minimum radius of curvature.
• An assembly of the pipes is simplified because dimensionally stable pipelines are cheaper to use than the known from the prior art pliable hose sections, especially with regard to the exercise of assembly forces on the plug-in areas.
• dimensionally stable pipelines also makes it possible to automate the final assembly of the pumping device, since the pipeline or the functional module provided with the pipeline can be gripped, for example, by an industrial robot, and the position of the plug-in area (s) can be Stable design is fixed, so that an automated insertion process can take place.
• dimensionally stable pipelines of the pipe section and / or the plug-in receptacle which are necessary for a simple to be effected, dense and possibly releasable plug-in connection, directly, in particular integrally formed. It is not necessary to press in hose sockets or to create a mating area of a different kind. This ensures a higher reliability of the connections between pipeline, pipe section and plug-in receptacle.
• at least substantially all functional modules are interconnected hydraulically communicating with each other with dimensionally stable pipes, which may be designed in particular as plastic parts.
• a further functional module comprises a pressure switch which is assigned to the pressure-side drainage channel.
• the pressure switch is provided for a pressure-dependent switching on and off of the drive motor and allows at a pressure drop in the water network, the activation of the drive motor to promote fluid into the water network and thus ensure a substantially constant fluid pressure in the water network.
• a pressure loss in the water supply network can be caused for example by removing water at a tapping point such as a tap.
• the drive motor is activated by the pressure switch and the fluid pump again promotes fluid in the water supply network and the pressure accumulator.
• a rigid pressure line is provided on the outlet channel, which is suitable for a communicating connection. tion of the drainage channel with the pressure switch and / or a pressure gauge is designed. A separate, designed as a rigid pressure line pipe allows individual adjustment of different pressure switch and / or pressure gauge to the pumping device. Thus, the pumping device can be easily adapted to different applications.
• the drainage channel and the pressure switch corresponding plug receptacles and / or pipe sections are provided, so that an automated assembly can be provided.
• At least one check valve is arranged in the inlet channel, which is designed for blocking a fluid pressure that can be applied by the fluid pump.
• the non-return valve prevents the fluid pressure built up by the fluid pump from dropping due to an outflow of fluid into the inlet channel.
• the check valve is in particular provided with a prestressed return spring and designed such that it opens the inlet channel by the negative pressure arising in the pump housing at start-up of the fluid pump and allows subsequent flow of fluid from the source or the storage vessel.
• the integration of the check valve in the inlet channel can be compared to externally attached check valves a compact, reliable fluid-tight and flow-favorable arrangement of the check valve guaranteed.
• the check valve is associated with an actuating device which is provided for a pressure-independent control of the check valve.
• the actuating device is provided to facilitate the priming process of the fluid pump, which would otherwise be hindered by the typically closed check valve upon reinstallation of the pumping device, particularly in the case of an unfilled fluid pump.
• the actuator allows manual or automatic opening of the rear impact valve by an associated control lever or an automatic control device. With the pressure-independent control of the check valve, the flow resistance for the fluid is reduced, so that a self-priming process of the fluid pump can take place.
• the actuating device is rotatably arranged in the inlet channel about a pivot axis arranged orthogonal to the central longitudinal axis of the inlet channel. This can be achieved by means of a pivoting movement of the actuator, an advantageous control of the check valve in the direction of the central longitudinal axis of the inlet channel. In addition, with such an arrangement of the actuating device only a small influence on the flow resistance for the fluid in the region of the check valve is taken.
• a filter assembly is provided as a further functional assembly, which has a particularly sleeve-shaped filter device in the inlet channel.
• the filter device prevents damage to the fluid pump by particles contained in the fluid, such as grains of sand.
• the integration of the filter device in the inlet channel allows a particularly compact design and ensures a particularly favorable and low-loss flow through the filter device.
• the filter device is designed for a fluid flow flowing radially inwards and that a cup-shaped collecting container is assigned to an end region of the filter device.
• the inlet channel is assigned at least one end plug, which is provided for a closure of an access to the check valve and / or the filter device.
• This facilitates maintenance of the filter device and / or of the check valve since only the end plug is removed from the inlet channel. must be removed, which in particular can be done without tools. Subsequently, the filter device and / or the check valve are accessible for maintenance or can be removed from the inlet channel to make maintenance.
• the check valve and the filter device are each assigned an end plug, so that, for example, the check valve in the vertical direction can be taken down from the inlet channel, while the filter device can be removed in a vertical upward direction.
• the drive motor and the pressure switch are assigned correspondingly executed multiple plug-in devices for a detachable electrical connection.
• the multiple plug-in devices allow creation of all electrical connections between the drive motor and the pressure switch with a plug-in operation, so that a coupling or decoupling of the pressure switch from the drive motor can be performed without expensive wiring work.
• a flexible membrane is fixed to the pressure vessel by means of a flange portion which has a plug-in device with a fluid channel for a communicating connection between the drainage channel and a compensating space enclosed by the membrane.
• the flange portion thus ensures the attachment of the membrane to the pressure vessel as well as the communicating connection with the drainage channel of the fluid pump.
• a fluid channel provided which opens into the enclosed by the membrane compensation space.
• the plug-in device allows a montage-friendly plug connection of the flange portion with the correspondingly executed drainage channel.
• the flange portion is integrally formed on the flow channel and in particular designed as a plastic injection molded part.
• At least two drainage channels are provided on the pump housing, of which at least one is designed in the manner of a siphon and / or has a vent valve disposed above the fluid pump.
• the vent valve allows for commissioning the fluid pump a simplified Warbef filling, in which the trapped in the fluid pump air must be displaced by the fluid in order to achieve a sufficient pumping action.
• the pumping device is already connected to the water supply network during commissioning, so that the air contained in the fluid pump can not easily flow into the environment. The above the fluid pump and opened vent valve allows escape of trapped air when filled with the fluid.
• the functional assembly comprising the pressure vessel has a frame which surrounds the pressure vessel, which has at least one footprint and which is provided with at least one mounting surface for connection to the functional subassembly comprising the fluid pump.
• the frame With the frame, the typically designed as a substantially cylindrical hollow body pressure vessel can be provided in a simple manner with the necessary for a secure state of the pumping device footing and with the mounting surface for safe and reproducible attachment of the fluid pump.
• the frame surrounds the pressure vessel in particular positive fit and can be screwed to screw socket of the pressure vessel. Due to the footprint or several feet a secure position of the pressure vessel is ensured on the ground.
• the mounting surface allows a simple and accurate position mounting of the fluid pump to the pressure vessel, which can also be ensured that the plug receptacles and the associated pipe sections of the functional assemblies, in particular the flow channel and the flange portion are aligned and can be easily connected to sealing connectors.
• the drive motor is mounted on a bearing plate, which is at least partially designed as a pump housing.
• a bearing plate which is at least partially designed as a pump housing.
• the fluid pump can therefore be realized with low positional tolerances, so that a particularly advantageous efficiency of the fluid pump can be achieved.
• the bearing plate is provided with a receptacle for the drive motor, which in particular allows a positive connection between a reference geometry of the drive motor, such as a cylindrical flange, and the bearing plate.
• the mounted on the shaft of the drive motor impeller is thus also aligned concentrically with the realized in the bearing plate part of the pump housing.
• Other housing parts may also be provided with reference geometries that can engage in corresponding reference geometries of the bearing plate and / or the pump housing and thus can also be arranged with low position tolerances.
• a mounting surface for attachment to the frame of the pressure vessel is provided on the bearing plate, which is designed in particular for a reproducible alignment of the bearing plate relative to the pressure vessel, preferably with at least one positioning pin. This ensures a precise positioning relative to the frame of the pressure vessel on the part of the bearing plate.
• the drive motor and / or the fluid pump are at least substantially surrounded by an air guide housing, which is designed such that a contact of moving or hot components of the drive motor is excluded.
• the air guide housing in cooperation with a radial fan provided on the drive motor, enables the generation of a defined cooling air flow at least on the outer surface of the drive motor. For an advantageous cooling effect is ensured, which has a positive effect on a lifetime of the drive motor.
• the design of the air duct housing ensures that a contact hot, moving or possibly live components can be excluded, so that the entire pump device can be operated safely.
• the necessary openings for the air guide in the air duct housing are either made so small that used according to the test instructions for a device test test finger can not penetrate and / or are provided with a labyrinth-like course that a deeper penetration of the test finger or other objects to hot, moving or live components can be excluded.
• the pump housing and / or the frame and / or the bearing plate and / or the air guide housing and / or the flange portion and / or the pressure line and / or the pipes is designed as a plastic injection molded part.
• the functional components of the pumping device can be manufactured in an advantageous manner precisely at low cost in series.
• the use of plastic injection molded parts also brings advantages in the weight of the pumping device and in corrosion resistance.
• an advantageous thermal and electrical shielding of the functional assemblies of the pump direction can be achieved, so that it is possible to dispense with additional insulation or insulation measures.
• FIG. 1 is a perspective view of a constructed of several functional assemblies pumping device
• FIG. 2 is a plan view of a sectional view of the pumping device of FIG. 1,
• 3 is a perspective view of the function module pressure tank
• 4 is a perspective view of the bearing plate and the pump housing of the fluid pump and housing shells
• FIG. 6 is a perspective exploded view of the pump housing with filter device and check valve
• Fig. 8 in perspective view of the bearing plate with pressure line.
• the pumping device 1 shown in FIGS. 1 and 2 is constructed from a plurality of functional modules, which are adapted to one another in such a way that a spatially compact, assembly-oriented and functionally correct arrangement can be achieved and, if appropriate, an at least partially automated final assembly of the functional modules can take place.
• the pumping device 1 has, as functional assemblies, a subassembly comprising a drive motor 2 with a fluid pump 3, a subassembly comprising a pressure switch 6, and a subassembly enclosing a pressure vessel 7.
• the functional modules can be mechanically and additionally hydraulically and / or electrically coupled to each other by suitable connectors, wherein the connectors between the functional modules are designed for easy final assembly and reliable connection of the functional modules. Further functional modules, which are subassemblies, will be discussed in more detail below.
• fluid-tight connectors 8, 9 for a hydraulic coupling realized as a fluid line between a pump housing Housing 42 and a pressure line 13, between the pressure line 13 and the pressure switch 6, between the pump housing 42 and a corner tube 61 and between the corner tube 61 and a flange portion 23 is shown.
• FIG. 2 and FIG. 5 the design of the electrical multiple plug connection 21, 60 can be seen.
• Figs. 2, 3 and 8 the design of the mechanical connector between the mounting surfaces 29 of the upper frame part 26 and the end plate 30 shows.
• a plug-in receptacle 8 and a correspondingly embodied pipeline section 9 are provided for a fluid-tight plug connection between function modules to be interconnected.
• the pipe section 9 is embraced in the inserted state, as shown in FIG. 2, of the plug receptacle 8 and has on an outer circumference a circular circumferential sealing groove 56 into which an O-ring 38 can be inserted. Thereby, a sealing effect between the pipe section 9, the O-ring 38 and an inner surface of the plug-in receptacle 8 is ensured.
• the production of the connector takes place in the direction of the central longitudinal axis 10 of each of the pipe section 9 and the socket 8 limited volume portion.
• plug-in directions are indicated by arrows in FIG. 7 by way of example.
• a likewise circumferential securing groove 55 is provided on the pipe section immediately behind the circumferential sealing groove 56 into which a U-shaped securing clip 57 can be inserted.
• the securing clip 57 can be inserted orthogonally to the plugging direction into a slot 58 of the plug-in receptacle 8 and brings about a positive connection between the plug-in receptacle 8 and the pipe section 9.
• the plug-in receptacles 8 and the pipe sections 9 formed on the functional assemblies eliminate the need for additional work such as the compression of hose sleeves to high-pressure hoses, so that the plug-in connection is considerably more cost-effective in terms of operational reliability, in particular with regard to leaks, than other types of connection between the functional assemblies.
• the provided between the drive motor 2 and the pressure switch 6 electrical multiple connector is shown in detail in Figs. 2 and 5.
• the multiple plug-in device is designed as a four-pole electrical connection between a multiple socket 21 of the pressure switch 6 and a multiple plug 60 of the drive motor 2 and allows the transmission of electrical currents and voltages from the pressure switch 6 to the drive motor. 2
• the drive motor 2 shown in more detail in FIG. 2 is an electric motor of known design with a motor shaft 33 which is mounted with ball bearings 39 and at each end a fan 35 and a pump 36 are mounted.
• the impeller 36 has a substantially disc-shaped outer contour and is provided with guide vanes 41, which are provided for a radially outwardly directed delivery of the fluid during a rotational movement of the impeller 36.
• the impeller 36 is received in a pump chamber 43 formed by a bearing plate 30 and a pump housing 42 and thus allows the delivery of a fluid from an inlet channel 5 to a drain channel. 4
• the end shield 30 shown in more detail in FIGS. 4 and 8 is provided in addition to its function as a limitation of the pump chamber 43 as a receptacle for a mounting flange 44 of the drive motor 2 and has For this purpose, a substantially cylindrically shaped recess 63 into which the mounting flange 44 of the drive motor 2 can be inserted concentrically.
• an advantageous orientation of the drive motor 2 and of the pump wheel 36 attached thereto can be achieved with respect to the pump space 43 which is at least partially bounded by the bearing flange 30.
• the pump housing 42 has frontally a mounting collar, which is adapted to a provided on the bearing plate 30, circumferential mounting flange 62 and thus allows exact positioning of the pump housing 42 relative to the impeller 36.
• a mounting surface is provided, which is designed corresponding to a provided on the frame top 26 mounting surface 29 and positioning 31 has a reproducible mounting on guide sleeves 53 of the upper frame part 26 are formed.
• a locking of the bearing flange 30 on the mounting surface 29 is preferably carried out by screw, not shown.
• an opening for the passage of the pressure line 13 is provided which connects the flow channel 4 communicating with the pressure switch 6 hydraulically.
• the pressure line 13 is in each case provided at the end with a plug-in receptacle 8 and a pipe section 9 and additionally has a branch for connecting a pressure gauge 14.
• the pressure line 13 is mounted on the bearing flange 30 so below the drive motor that pressure switch 6 can also be mounted in a sheltered position under the drive motor 2 and is not damaged in harsh operation of the pumping device 1.
• a plurality of fluid channels 45 are provided, which are coordinated with each other such that during operation of the impeller 36, a fluid flow caused by the Venturi principle can, so that with the only single-stage running fluid pump sufficient for most applications of the pumping device 1 pressure level can be reached.
• the inlet channel 5 is provided, which is equipped in the form of a subassembly with a filter device 17 and with a check valve 15.
• the filter device 17 has a filter system 47 supported by a support structure 46, which can be flowed through in the radial direction from outside to inside to form a central longitudinal axis of the filter device 17. Dirt particles in the fluid, which are retained on the filter net 47, can sink down into the catch tank and are thus removed from the flow path of the fluid. The fluid freed of dirt particles can then flow off at a front-side lower end of the support structure 46 through a bore in the direction of the check valve 15.
• the check valve 15 is associated with an actuating device 16 which is arranged orthogonal to the central longitudinal axis of the filter device 17 pivotally and which has a switching cam 48 which has no mechanical contact with the check valve 15 in a rest position, as shown in FIG.
• pivoted by 90 ° operating position of the switching cam 48 acts on an end portion of the check valve 15 such that the check valve 15 is brought from the rest position shown in FIG. 2 in an open position. This can be at a reinstallation of the pumping device 1, a suction of fluid through the inlet channel 5 are facilitated because the closing force of the check valve 15 does not have to be overcome.
• a filter cover 19 and a valve cover 20 are each provided at the end, which close the inlet channel 5 and are removable without tools to allow a user access, for example, for maintenance or cleaning purposes, the filter device 17 and the check valve 15.
• a screwable vent valve 25 is mounted, which facilitates filling of the already connected to a water supply network pumping device 1, since the fluid displaced from the pump chamber 43 air can escape and the pump chamber 43 thus filled when starting the FIu- idpumpe 3 with fluid is and can provide an advantageous pumping power.
• the pressure vessel 7 is designed substantially as a cylindrical pressure vessel and has a circular opening on the front side through which a membrane 22 made of elastic material can be introduced into the volume section surrounded by the pressure vessel ,
• the membrane 22 is fixed to the outside of the pressure vessel 7 via the flange section 23, which is shown in more detail in FIGS. 3 and 7, wherein the flange section 23 is provided with a fluid channel 49 which serves for a communicating connection with a drainage channel 4 attached to the pumping space 43 is provided.
• the end of the flange portion 23 is closed with a drain plug 50, which allows emptying of the pump chamber 43 for performing maintenance and repair work.
• the membrane 22 defined by the flange portion 23 encloses a compensation space 24 which serves as a reservoir for pressurized fluid during operation of the pumping device 1.
• the pressure vessel 7 is, as shown in more detail in FIGS. 1 and 3, positively surrounded by a frame consisting of a frame upper part 26 and a frame lower part 27, each bolted to screw socket 51, as shown in FIG is.
• feet 28 are integrally formed on the frame lower part 27, which enable a secure position of the pumping device 1 on an at least substantially level substrate and which are provided with screw holes for a stationary attachment of the pumping device 1. At the feet 28, as shown in Fig.
• damping elements 52 are attached, which can be made of an elastic material such as rubber or rubber, and are provided for a vibration isolation of the pumping device 1 from the ground.
• damping elements 52 are attached, which can be made of an elastic material such as rubber or rubber, and are provided for a vibration isolation of the pumping device 1 from the ground.
• the frame upper part further comprises a carrying handle 72 for convenient transport of the pumping device 1.
• the air guide housing 32 is constructed of a plurality of components which are interconnected via latching connections.
• the drive motor 2 is essentially enclosed by a sleeve-shaped engine cover 64, which is provided with a ventilation grille 65 at the end and which is shown in greater detail in FIG.
• the motor cover 64 is provided with latching hooks 66 which are provided for engagement with housing shells 67, 68 according to FIG. 4 in order to ensure a positive connection.
• the fan 35 has the task of, during the operation of the drive motor 2 to move air over the surface of the engine housing 71 shown in detail in Fig. 5 and enclosed by the engine cover 64 and thus to effect heat removal from the motor housing 71 of the drive motor 2.
• the housing shells 67, 68 of the air guide housing 32 shown in greater detail in FIG. 4 are designed essentially mirror-inverted and have ventilation slots 69 for a discharge of cooling air of the drive motor 2 and mounting webs 70 for a positive reception on the pump housing 42.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Public Health (AREA)
• Water Supply & Treatment (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Seal Device For Vehicle (AREA)
• Eye Examination Apparatus (AREA)
• Fluid-Driven Valves (AREA)

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ID=36950459

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Citations (6)

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• 2005
  • 2005-07-26 DE DE102005036136A patent/DE102005036136A1/de not_active Withdrawn
• 2006
  • 2006-07-19 EP EP06762694.5A patent/EP1913257B1/de active Active
  • 2006-07-19 PL PL10000378T patent/PL2211057T3/pl unknown
  • 2006-07-19 DE DE202006015688U patent/DE202006015688U1/de not_active Expired - Lifetime
  • 2006-07-19 AT AT10000378T patent/ATE540223T1/de active
  • 2006-07-19 WO PCT/EP2006/007096 patent/WO2007012420A1/de active Application Filing
  • 2006-07-19 EP EP10000378.9A patent/EP2211057B2/de active Active
  • 2006-07-19 HU HUE06762694A patent/HUE051671T2/hu unknown

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