Abstract:
A floor-mounted domestic appliance includes an A.C. power connector that supplies the appliance with electric energy, an appliance outlet that corresponds to the A.C. power connector, wherein the appliance outlet comprises a terminal block for establishing an electrically conducting connection to a power supply lead.

Description:
BACKGROUND OF THE INVENTION  
       [0001]    The invention relates to a floor-mounted domestic appliance having at least one A.C. power connector for supplying it with electric energy from a domestic power supply network. 
         [0002]    Floor-mounted domestic appliances are employed for performing domestic tasks such as, for example, cooking, baking, washing, and cleaning, and need electric energy to operate. For being supplied with electric energy, floor-mounted domestic appliances of the kind have an electric power connector that allows an electric connection to be established to a domestic power supply network for supplying electric loads with electric energy. 
         [0003]    The floor-mounted domestic appliances can therein be large appliances or, as the case may be, floor-mounted domestic appliances such as, for example, refrigerators, electric ranges, clothes driers, or water-containing floor-mounted domestic appliances such as washing machines or dishwashers. 
         [0004]    Particularly, in the case of floor-mounted domestic appliances or, as the case may be, large appliances, instead of having an A.C. power connector plugged into a socket it may be necessary, owing to national regulations, to provide a fixed installation for which permanent wiring is required that is provided, for example, in a junction box of a domestic power supply network for supplying electric loads with electric energy. A floor-mounted domestic appliance of the type intended for a fixed installation accordingly does not have a corresponding A.C. power supply plug but, instead, a terminal block that is located on the front side of a floor-mounted domestic appliance, for example in the region of the base recess where it will be in an easily visible location. During initial power-on or, as the case may be, installation, that means having to duct the individual wires of a power supply lead to the A.C. power connector located in the region of the base recess and securing them there, which action requires a corresponding body posture. 
       SUMMARY OF THE INVENTION  
       [0005]    It is hence an object of the invention to develop floor-mounted domestic appliances in such a way that initial power-on or, as the case may be, installation will be simplified. 
         [0006]    The invention proceeds from a floor-mounted domestic appliance having at least one A.C. power connector for supplying it with electric energy from a domestic power supply network. 
         [0007]    An object of the invention is achieved by means of an appliance outlet, corresponding with the A.C. power connector, that has a terminal block for establishing an electrically conducting connection to a power supply lead. What is achieved thereby in a surprisingly simple manner is that for establishing contact it will not be necessary to duct individual wires in the power supply lead to the region of the base recess, which action requires a corresponding body posture. The invention will thus simplify connecting a floor-mounted domestic appliance of such type to the A.C. power supply as well initially powering it on. 
         [0008]    The A.C. power connector can be a multi-phase appliance connector plug, for instance a three-phase appliance connector plug as used, for example, for electric ranges. It is, though, preferably provided for the A.C. power connector to be embodied as an appliance connector plug, for example as a single-phase appliance connector socket, having three projecting A.C. power connector contacts, embodied as contact blades, for the phase, neutral conductor, and protective conductor. Four or, as the case may be, five freestanding contact blades can be provided in the case of a three-phase A.C. power connector. The contact blades are therein arranged centrally in a socket and are completely enclosed by openings in the appliance connector plug, as is known from, for instance, plugs for non-heating and also heating appliances. 
         [0009]    The floor-mounted domestic appliance, in particular the large appliance or, as the case may be, floor-mounted domestic appliance, preferably has a base recess into which a door by means of which a treatment space can be opened moves, in the case of a dishwasher, for example, for opening same. It is therein preferably provided for the A.C. power connector to be located in the region of the base recess, particularly in a region that will be visible on power-on so that a fitter can readily check the connection to the A.C. power supply. The A.C. power connector is therein located especially on the front side, meaning in a region that is accessible and visible to an operator. The A.C. power connector can alternatively also be located on the rear side. 
         [0010]    It is preferably provided for the A.C. power connector and appliance outlet to be mutually detachably joined so that the connection can be readily released for installation or repair purposes. For that purpose it is preferably provided for a latch connection to be provided that secures the connection between the A.C. power connector and appliance outlet. The latch connection is preferably embodied as being able to be latched into position and/or released without the aid of tools. 
         [0011]    It is further preferably provided for the A.C. power connector to have at least two freestanding contact blades and for the appliance outlet to have a corresponding number of receptacles for the contact blades of the A.C. power connector. Three contact blades for the phase, neutral conductor and protective conductor are provided in the case of a single-phase connector. Four or, as the case may be, five freestanding contact blades can be provided in the case of a three-phase A.C. power connector. 
         [0012]    The A.C. power connector is therein preferably embodied for supplying electric energy for electric voltage levels of domestic supply networks for supplying electric energy. The supply voltages can be A.C. voltages of 240 V or, as the case may be, 230 V or 127 V or, as the case may be, 110 V exhibiting the variations of, for example, 5% or 10% that are customary in supply networks. 
         [0013]    It is further preferably provided for the A.C. power connector to have data transmission contacts for extra-low electric voltages. The data transmission contacts will thus carry a voltage that is non-hazardous for fitters so that a recessed arrangement of voltage-carrying contacts will not be required here. 
         [0014]    The floor-mounted domestic appliance preferably has a controller that is designed for controlling operating sequences and is connected in an electrically conducting manner to the data transmission contacts. The data transmission contacts will thus also allow e.g. program data for controlling operating cycles to be transmitted to the controller of the floor-mounted domestic appliance during production of a floor-mounted domestic appliance, which is to say preprogramming of the controller. Alongside unidirectional data transmission, the data transmission contacts can, though, also allow bidirectional data transmission that will then, for example, allow service personnel to connect to the inventive A.C. power connector a diagnostic device by means of which both control signals or interrogations of a floor-mounted domestic appliance can be transmitted via the data transmission contacts and data relating to error messages or functional interrogations can be transmitted to the diagnostic device via the data transmission contacts. 
         [0015]    The data transmission contacts can be located—embodied as, for example, contact pins—in the center of the A.C. power connector. It is, though, preferably provided for the data transmission contacts to be located on the interior side of the A.C. power connector. That arrangement will make it possible to dispense with socket-side recesses into which the data transmission contacts embodied as contact pins are inserted when a connection is made to a domestic supply network. 
         [0016]    It is further preferably provided for the data transmission contacts to extend into an opening on the A.C. power connector. It is therein preferably provided for the controller, in particular a printed circuit board thereof, to extend at least in sections into the opening. That will allow a particularly compact structural design with no additional leads. For that purpose it is preferably provided for the printed circuit board of the controller to form, at least in sections, an interior side of the A.C. power connector. A section of the printed circuit board will thus seal the opening in the A.C. power connector. A particularly compact structural design will be possible if the data transmission contacts are located on the printed circuit board of the controller. The data transmission contacts form a section of the A.C. power connector&#39;s inner wall that comes into contact with a corresponding outer surface of a matching appliance outlet and in that way establishes a reliable connection that cannot become detached in an undesired manner even as a result of vibrations and oscillations occurring while the floor-mounted domestic appliance is operating. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS  
         [0017]    The invention is explained below with the reference to a drawing, in which: 
           [0018]      FIG. 1  is a perspective representation of an inventive floor-mounted domestic appliance, 
           [0019]      FIG. 2  is a schematic of an A.C. power connector for a floor-mounted domestic appliance, 
           [0020]      FIG. 3  shows a power supply lead having an appliance outlet and a terminal block. 
       
    
    
     DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS  
       [0021]    What is shown is a dishwasher  2  having a door  16  that can be opened in order to expose a treatment space (not shown) into which articles to be washed, meaning crockery in need of cleaning, can be placed. On being opened, the door swivels by a lower section into a free space formed by a base recess  8 . 
         [0022]    Located in the region of the base recess  8  is the A.C. power connector  4  for supplying the floor-mounted domestic appliance with electric energy. It is therein located on the front side of the floor-mounted domestic appliance  2 , meaning on the side easily accessible to an operator. In its installed condition the floor-mounted domestic appliance  2  is therein arranged with its rear side against a wall and laterally flanked by furniture and other appliances. 
         [0023]    For executing cleaning programs the floor-mounted domestic appliance  2  has a controller that in turn has, for example, microprocessors and memories (not shown) and is electrically connected to a multiplicity of actuators such as, for example, pumps or detergent-dosing devices as well as a heating means of the floor-mounted domestic appliance  2  to be able to selectively control a desired program cycle. The controller  14  further has an A.C. adapter (not shown) for converting the supply voltage to an internal voltage value. 
         [0024]    The A.C. power connector  4  has three freestanding contact blades  10  that are respectively assigned the phase, neutral conductor and protective conductor and by means of which connection is possible to an A.C. power supply for supplying the floor-mounted domestic appliance  2  with electric energy from a domestic power supply network. The A.C. power connector  4  further has data transmission contacts  6  located on an interior side  12  of the A.C. power connector  4 . The data transmission contacts  6  are therein not freestanding but integrated in the interior side so that an appliance outlet can be inserted into the A.C. power connector  4  and that will not be impeded by the data transmission contacts  6 . In that way it is possible to connect the floor-mounted domestic appliance  2  in a known manner to a domestic supply network for supplying electric energy by means of an A.C. power connector. The transmission contacts themselves will in that case have no function. 
         [0025]    For using the data transmission contacts  6  a specially adapted appliance outlet (not shown) can be provided that has contacts corresponding with the data transmission contacts  6  and thus enables contacting by means of a female A.C. power connector  4 . The appliance outlet  4  can therein have blindly embodied recesses for the contact blades  10  so that only the data transmission contacts  6  will be contacted. The appliance outlet can alternatively also have recessed A.C. power connector contacts for the contact blades  10  so that both the data transmission contacts  6  and the contact blades  10  of the A.C. power connector for supplying electric energy will be contacted and hence both the floor-mounted domestic appliance  2  will be supplied with electric energy and a data transmission will be possible via the data transmission contacts  6 . That will allow programs for controlling the floor-mounted domestic appliance  2  to be loaded into the controller  14  via the data transmission contacts  6  for example while a floor-mounted domestic appliance  2  is being produced. The data transmission contacts  6  will further allow a function check to be performed on the floor-mounted domestic appliance  2  while it is being produced. Finally, the data transmission contacts  6  can, in the event of a fault instance, be used also for connecting a diagnostic device to the controller  14  in an electrically conducting manner and thus for performing a diagnosis relating to the fault instance. It is furthermore possible to use the data transmission contacts  6  for establishing a connection to a communication network such as, for example, the internet by means of a modem and thereby, in the event of a fault instance, enable a remote diagnosis to be performed and/or data relating to, for example, changed or new program cycles to be transmitted to the floor-mounted domestic appliance  2 . 
         [0026]    It can further be provided for the data transmission contacts  6  to be able to be covered and sealed by means of a suitable, e.g. plastic, cover (not shown) during production after program data has been loaded. The data transmission contacts  6  will thereby be protected while the floor-mounted domestic appliance  2  is being delivered and operated and it will not be possible for conductance bridges that could cause a fault in the controller  14  to form owing to, for example, humidity. The cover (not shown) can easily be removed by service personnel if necessary. 
         [0027]    An appliance outlet socket  18  that has recesses for accommodating the contact blades  10  and is embodied to correspond with the A.C. power connector is provided for enabling the floor-mounted domestic appliance  2  to be connected to a domestic supply network without using a plug. The appliance outlet further has a terminal block  20  which in the present exemplary embodiment has three terminals for the phase, neutral conductor and protective conductor. The terminal block  20  therein has screw connections or other clamping connections to be able to establish an electrically conducting connection to the individual conductors of a power supply lead  22 . A strain relief means (not shown) can furthermore be provided in order to avoid unnecessary mechanical loading of the connection. 
         [0028]    The appliance outlet socket  18  having the terminal block  20  facilitates in particular installation during initial power-on that involves establishing a permanent connection to a domestic power supply network for supplying electric energy, because the appliance outlet socket  18  having the terminal block  20  will make it possible firstly to connect the power supply lead  22  to the terminal block  20  and, on completion of the work, to insert the appliance outlet into the A.C. power connector  4 . It will hence not be necessary to duct individual wires in the power supply lead  22  to the region of the base recess  8  for establishing a contact, which action requires a corresponding body posture. The invention will therefore simplify connecting a floor-mounted domestic appliance  2  of such type to the A.C. power supply and initially powering it on.