Abstract:
The invention relates to an assembly for a machine for preparing beverages by infusion of a liquid, that includes a holder ( 10 ), a boiler ( 20 ) for heating the liquid for producing beverages, assembling element ( 21   a,   21   b,    25 ) provided so as to selectively allow the connection and removable disconnection of the boiler on the holder ( 10 ), a first fluid communication element connected to the boiler ( 20 ) and a second fluid communication element connected to a fluid inlet circuit and/or a fluid outlet circuit, the first and second fluid communication element being adapted to interact in order to provide fluid communication between the boiler and a fluid inlet circuit and/or fluid outlet circuit, characterised in that it is adapted so that the connection and the disconnection between the boiler ( 20 ) and the holder ( 10 ) respectively enables and disables the interaction between the first and second fluid communication element.

Description:
FIELD OF THE INVENTION 
       [0001]    This invention concerns a device for making beverages by the infusion of a hot liquid such as hot water. 
         [0002]    The invention will apply especially to coffee machines used to make coffee from ground coffee contained, for example but not exclusively, in individual packages also called doses and capsules. The invention applies more especially in the field of Espresso-type coffee machines. It may also be used to make other beverages such as tea. 
       BACKGROUND OF THE INVENTION 
       [0003]    A device for producing beverages by infusion generally consists of a water circuit passing through a boiler to bring the water to the temperature required for its infusion (for example around 100° C.), a pump to extract the material to be infused under pressure and an infusion chamber inside which the matter to be infused is placed and through which circulates the hot water under pressure. 
         [0004]    A conventional boiler consists of an assembly incorporating a heating resistance and hot water circuit. This type of boiler needs to be connected to an electrical circuit and a water circuit. 
         [0005]    During machine operating cycles, lime scale accumulates in the water circuit. These deposits reduce irremediably the performances of the machine until it stops operating altogether. It is already known that water circuits can be de-scaled using appropriate alkaline products, but unfortunately the general public has discretion as to whether or not to use these harmful products which are difficult and dangerous to handle and require abundant rinsing, without the products discharged by this rinsing operation being controlled properly. 
         [0006]    Therefore the boiler has to be regularly dismantled and cleaned or replaced by a clean boiler. These repair and maintenance operations require that the user sends the machine to a specialist. This means that the user is unable to use the machine and this causes inconvenience coupled with a considerable loss of earnings in the case of machines that are used professionally. 
         [0007]    In fact, assembly and disassembly current machines are difficult and tiresome. This results in long periods when the machine cannot be used due to repair or maintenance work. These assembly and disassembly operations also lead to considerable fabrication and maintenance costs. 
       SUMMARY OF THE INVENTION 
       [0008]    This invention limits the shortcomings of known boilers and in particular makes it easier for them to be maintained and repaired by specialist professionals thereby guaranteeing their service life, or by the users themselves. 
         [0009]    To achieve this goal, this invention concerns an assembly for machines used to make beverages by infusing a liquid comprising a support, a boiler for heating the liquid used to make the beverages, assembly means arranged to allow selective uniting and removable disuniting of the boiler and the support, first fluid communication means joined to the boiler and second fluid communication means joined to an incoming fluid circuit and/or an outgoing fluid circuit, the first and second means of fluid communication being arranged to co-act in order to ensure that the fluid passes between the boiler and the fluid incoming circuit and/or fluid outgoing circuit, the assembly being arranged so that uniting and disuniting of the boiler and the support allow and remove respectively the co-action between the first and second means of fluid communication. 
         [0010]    Therefore, the boiler is united to the machine support and connected simultaneously to the water circuits using common steps. Similarly, disuniting the boiler from the support and removal of the fluid communication means between the boiler and the water circuits occurs simultaneously and results from common steps. 
         [0011]    Therefore, this invention simplifies significantly assembly and disassembly of the boiler compared to existing machines. 
         [0012]    This allows the user to carry out the boiler assembly and disassembly operations himself. As a result, it is no longer necessary to send all the machine to a specialist when maintenance is required, only the boiler needs to be sent. The user is then able to use a replacement boiler that he can assemble on the machine himself after disassembly the first boiler that needs maintenance work. 
         [0013]    Machine inoperability will therefore be limited to assembly and disassembly steps performed by the user himself. 
         [0014]    Moreover, savings are to be made on the costs of maintenance work and transport of the boiler since these costs are mainly limited to the boiler and not to all the machine. 
         [0015]    Moreover, the invention saves considerable time and production and maintenance costs. 
         [0016]    Moreover, the system according to the invention will present at least one of the following optional features:
       it is arranged so that the co-action between the first and the second means of fluid communication is obtained by a tight fit of the first fluid communication means to the second fluid communication means,   it is arranged so that the said uniting of the boiler and the support is obtained by a first translational movement of the boiler relative to the support, followed by a second rotational movement relative to the support,   it is arranged so that the second rotational movement takes place in an appreciably vertical axis,   it is arranged so that the second rotational movement takes place in the horizontal axis,   the support includes a chassis and a shaft fitted to rotate relative to the chassis and arranged so as to be united in a removable manner to the boiler,   the second means of fluid communication are carried by the shaft, and the shaft accommodates part of the incoming and/or outgoing water circuit,   the support is arranged so as to prevent any removal of communication between the first and the second means of communication when the boiler and the support are united,   it includes first and second means of electrical connection joining respectively the boiler to an electrical power supply and able of co-acting one with the other in order to supply the boiler with electricity, and insofar as the uniting or disuniting of the boiler and the support allows and removes respectively co-action between the first and second means of electrical connection,   the shaft is equipped with a translational stop arranged to ensure the boiler is positioned properly relative to the shaft and that the stop bears the second means of communication.       
 
         [0026]    Moreover, the invention concerns a boiler for use on a machine making beverages by infusing a liquid and comprising:
       assembly means arranged to allow removable uniting of the boiler and a support fixed to the machine,   first means of fluid communication arranged so that there is fluid communication between the boiler and an incoming fluid and/or outgoing fluid circuits on the machine,   arranged so that its uniting and its disuniting on the machine allows and removes the said fluid communication.       
 
         [0030]    It also concerns a machine for making beverages according to any one of the previous claims. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0031]    The drawings attached are given by way of examples and are not exhaustive. They show only examples of embodiments of the invention and will allow the invention to be easily understood. 
           [0032]      FIG. 1  is a view in perspective of a first example of an embodiment of the invention, on which the boiler and the support are not united one to the other, 
           [0033]      FIG. 2  is a view in perspective of the boiler in the embodiment shown on  FIG. 1 , 
           [0034]      FIGS. 3 ,  4  and  5  are perspective views of the invention&#39;s embodiment shown in  FIG. 1  during the first phase of boiler and support uniting, 
           [0035]      FIGS. 6 and 7  are perspective views respectively from above and below the assembly according to the example in  FIG. 1 , the boiler and the support being united one to the other, 
           [0036]      FIG. 8  is a perspective view of a second embodiment of the invention, the boiler and the support being united one to the other, 
           [0037]      FIGS. 9 to 12  are perspective views of the embodiment shown on  FIG. 8  during the different phases of boiler assembly in the support. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0038]    By reference to  FIGS. 1 to 7 , a series of beverage preparations is according to the first embodiment have been shown. 
         [0039]    The assembly consists of a boiler  20  and support  10 . 
         [0040]    Boiler  20  has a body comprising an underside  25 , a top  28  and sides  27 . Underside  25  is appreciably flat and horizontal and acts as bottom  15  for boiler  20 . Top  28  is appreciably parallel to underside  25 . Sides  27  extend from underside  25  to top  28 , so as to give the body an appreciably parallelepiped shape the angles of which formed by adjoining sides  27  are rounded. The body thus defines an internal volume forming a heating chamber. 
         [0041]    Boiler  20  also has heating means joined to the body and able to enter into contact with a liquid such as water in the heating chamber. 
         [0042]    Boiler  20  is also equipped with the first means of communication. These first means of communication include male connectors  21   a ,  21   b  co-acting respectively with female connectors  11   a ,  11   b  on support  10 . As will be detailed below, a male connector  21   a  is designed to ensure that the fluid flows between the chamber and a circuit feeding the water into the chamber, the other male connector  21   b  being designed to ensure that the fluid flows between the chamber and an outlet circuit evacuating the water outside the chamber. 
         [0043]    Male connectors  21   a ,  21   b  are arranged on side walls  18  so that each one forms a protuberance extending tangentially from side walls  18  relative to a vertical axis passing through the middle of the underside and top. Hereafter, this axis is called the axis of boiler  20 . 
         [0044]    Boiler  20  also has a handle  23  fitted on its top  28  to help the operator grip boiler  20 . 
         [0045]    Support  10  itself constitutes a frame of the machine and can be added on to the latter. 
         [0046]    Support  10  has side walls  18  that give the former a generally cylindrical shape defining an axis of support  10 . 
         [0047]    Support  10  is also equipped with a bottom  15  and cover  17  both extending in the horizontal planes at the respectively lower and upper end planes of side walls  18 . 
         [0048]    As a result, support  10  forms an inner volume that constitutes a housing. 
         [0049]    Cover  17  has an opening  12  the dimensions of which allow boiler  20  to be inserted vertically into support  10 . Moreover, these dimensions allow boiler  20  to be guided during this translation relative to support  10 . 
         [0050]    Moreover, the relative dimensions between boiler  20  and support  10  are such that all the boiler  20  apart from one part at least of handle  23  can be accommodated in the housing. 
         [0051]    The assembly has means for rotationally guiding boiler  20  relative to support  10 . These guiding means include a male component  24  on boiler  20  and a female component  14  corresponding to the male component  24  on support  10 . Male component  24  on underside  25  of boiler  20  forms a roughly circular protuberance centred on the axis of boiler  20 . Female component  14  forms a circular void in bottom  15  of support  10  centred on the axis of support  10 . 
         [0052]    When boiler  20  is inserted in support  10 , the male and female components come into contact one with the other and the axes of boiler  20  and support  10  coincide in order to form a common axis. In this position, male component  24  and female component  14  co-act in order to rotationally guide boiler  20  in this common axis relative to support  10 . 
         [0053]    This results in rotational movement taking place around an axis that is appreciably parallel to the direction around which translation takes place. 
         [0054]    Side walls  18  of support  10  have two discontinuities each one forming a recess  13  extending inwards from the outer perimeter of the cylinder. These recess  13  each form a protuberance inside the housing. These two recess  13  are appreciably symmetrical one relative to the other in the axis of support  10 . 
         [0055]    Each one of these protuberances forms a stop for boiler  20  rotation in the common axis. 
         [0056]    In the example shown, recess  13  has two appreciably flat and vertical surfaces extending from bottom  15  up to cover  17 . These two surfaces are adjoining and extend inwards to form an approximate right angle inside the housing. A first surface of recess  13  consisting of a stop resisting rotation of the boiler  20  in the so-called disengaging direction relative to support  10  when boiler  20  is inserted in the housing. 
         [0057]    A second surface of recess  13  is fitted with second means of communication each one forming communication between the outside and the is inside of the housing. These second means of communication are able to co-act with an incoming and outgoing water circuit and with first boiler  20  means of communication. 
         [0058]    To this end, the part of the second means of communication positioned opposite the outside of the housing is arranged so as to form a leaktight connection with the water pipes. 
         [0059]    Moreover, the part of the means of communication arranged opposite the inside of the housing forms a female connector  11   a ,  11   b  that corresponds to a male connector  21   a ,  21   b  and is able to act with the latter to former a leaktight and mechanically stable connection between boiler  20  and support  10 . 
         [0060]    The assembly is arranged so that when boiler  20  is turned relative to support  10  in the so-called engaging direction, male connectors  21   a ,  21   b  are respectively arranged opposite female connectors  11   a ,  11   b  and are able to co-act with the latter in order to create fluid flow between the heating chamber and the incoming and outgoing circuits connected to the second means of communication. 
         [0061]    In order to ensure that there is leaktight co-action between the first and second means of communication, a preferred arrangement will be for female connectors  11   a ,  11   b  to form a bore and male connectors  21   a ,  21   b  to form a hollow cylinder able to penetrate female connectors  11   a ,  11   b . Moreover, each male connector  21   a ,  21   b  may be equipped with a throat  22  to accommodate an o-ring. 
         [0062]    Boiler  20  is arranged so as to turn in the engaging direction relative to support  10  until reaching the engaged position in which at least one side  27  being stopped against one of the second walls forming recess  13  or against female connectors  11   a ,  11   b . As a result, the engaging position may be formed by a stop in female component  14  which the end of corresponding male connector  21   a ,  21   b  is designed to come into contact with. 
         [0063]    This engaging position is obtained by a tight fit of the first means of communication to the second means of communication. 
         [0064]    In this position, underside  25  of boiler  20  rests flat on bottom  15  of support  10  and cover  17  prevents any vertical removal of boiler  20  out of support  10 . 
         [0065]    Underside  25  of boiler  20  and the first means of communication co-act respectively with bottom  15  of support  10  and the second means of communication in order to ensure that boiler  20  is installed and united to support  10 . In this embodiment, underside  25  of boiler  20 , the first means of communication, and bottom  15  of support  10  and the second means of communication form means of assembly arranged so as to allow either the uniting or disuniting of boiler  20  and support  10 . In this way, the means of communication contribute to uniting boiler  20  and support  10 . 
         [0066]    This engaging position ensures that boiler  20  is held on support  10  in a particularly stable and reliable manner. It also ensures that fluid communication between boiler  20  and the incoming and outgoing water circuits connected to the latter remain particularly stable. 
         [0067]    This stability is obtained particularly easily. In fact, the following steps are sufficient to assemble boiler  20 :
       underside  25  of boiler  20  is positioned at the level of the opening,   boiler  20  is inserted through opening  12  in the axis of support  10 ,   boiler  20  is rotated on this axis in the engaging direction until the first and second means of communication co-act and are tight fit one in the other.       
 
         [0071]    Moreover, the disassembly of the boiler  20  relative to support  10  is performed by the following easy and sufficient steps:
       boiler  20  is rotated on the access of support  10  in the disengaging direction until top  28  of boiler  20  is positioned opposite the opening.   boiler  20  is withdrawn vertically through the opening in the axis of support  10 .       
 
         [0074]    Assembly and disassembly of boiler  20  and support  10  can be carried out in this way by the user himself without recourse to a specialist. 
         [0075]    The assembly is also equipped with the first electrical connection means  26  on boiler  20  and second electrical connection means  16  on support  10 . 
         [0076]    The first connection means  26  include a first and second contactor arranged so as to be respectively in contact with the first and second contactor on the second electrical connection  16  when boiler  20  is in the engaged position. 
         [0077]    As an advantageous measure, second means of electrical connection  16  are positioned on bottom  15  of support  10  and the first means of connection are positioned on the underside  25  of boiler  20 . 
         [0078]    First means of connection  26  are electrically connected to the heating element of boiler  20 . The second means of connection  16  are electrically connected to an electrical supply circuit. Therefore, boiler  20  is supplied with electricity in the engaged position. 
         [0079]    As a consequence, the invention is able to ensure the mechanical stability, fluid communication and electrical connection of boiler  20  in a particularly simple manner. This assembly is removable and achieved particularly easily and quickly without the need for a tool and associated assembly means such as nuts and bolts. Boiler  20  can therefore be interchanged and this makes it possible to limit machine downtime. This assembly according to the invention will advantageously lead to lower machine production and maintenance costs. 
         [0080]    In a variant of this embodiment, the rotational guiding means may consist of a male component  24  on support  10  and a female component  14  on boiler  20 . 
         [0081]    In a variant of the embodiment described above, a valve may be used to close the opening. 
         [0082]    In a variant of the embodiment described above, two male connectors  21   a ,  21   b  are installed on a same side  27  of boiler  20 . Measures may also be taken so that support  10  only has one recess  13  on which are installed the two female connectors  11   a ,  11   b.    
         [0083]    In a variant of the embodiment described above, two male connectors  21   a ,  21   b  are arranged on underside  25  of boiler  20 . Measures may also be taken for female connectors  11   a ,  11   b  to be positioned at the level of opening  12  to and placed opposite male connectors  21   a ,  21   b  respectively when the boiler is positioned at the level of opening  12 . The assembly includes assembly means ensuring firm and tight contact between male connectors  21   a ,  21   b  and female connectors  11   a ,  11   b . These assembly means may be formed by the male and female connectors themselves. They may also be formed by a specific engaging device consisting of retractable or flexible triggers on the support and inserting in a removable manner into an engagement stop formed by boiler  20  in order to maintain the latter in position relative to support  10 . This engagement stop may be formed by an aperture or a specific protuberance, or by one of sides  25 ,  27 ,  28  of boiler  20 . In such an embodiment, boiler  20  and support  10  are arranged so that they can be assembled together using the following steps:
       lower face  25  of boiler  20  is arranged opposite opening  12  made in support  10 ,   boiler  20  is inserted by a translational movement through opening  12  until the engaging means have united boiler  20  to support  10  and made a firm contact between male connectors  21   a ,  21   b  and corresponding female connectors  11   a ,  11   b.          
 
         [0086]    The advantage of this variant is that it makes assembly and the disassembly particularly easy. 
         [0087]    Locking means may also be provided to selectively prevent and allow disengagement of boiler  20  and support  10 . These locking means are preferably arranged at opening  12  so that they may close or open. These locking means may take the form of a removable flap valve or catch fitted to rotate or translate on support  10 . 
         [0088]    The invention is not limited to the variants of this first embodiment described above as illustrative examples, but also extends to boilers in which the axis of support  10  and the axis of boiler  20  are not vertical when boiler  20  is united to support  10 . Indeed, these axes may be oblique or horizontal. 
         [0089]    The translational movement always takes place in the axis of support  10 . The rotational movement takes place around an axis that is appreciably parallel to the direction of translation. 
         [0090]    A second embodiment will now be described by reference to  FIGS. 8 to 12 . 
         [0091]    Boiler  120 , apart from the arrangement of the first fluid communication means and the first electrical communication means, has appreciably the same characteristics as boiler  120  described in the first example of the embodiment of this invention. Thus, boiler  120  has an underside, a top  128  and sides  127  forming a heating chamber. Top  128  of boiler  120  has a handle  123  designed to assist the user to grip boiler  120 . 
         [0092]    The first means of communication are arranged on underside  125 . They form male connectors  121   a ,  121   b , each one forming a protuberance and defining a hollow cylinder extending from underside  125  in a normal line direction to the latter. 
         [0093]    Two male connectors  121   a ,  121   b  constitute the ingoing and outgoing respectively of water in boiler  120 . Advantageously, they are arranged to be considerably apart one from the other. 
         [0094]    Support  110  has a shaft  131  and a chassis  130  arranged so as to act as a bearing for shaft  131  fitted to rotate on chassis  130  according to a horizontal axis designated hereafter as the rotational axis. Shaft  131  is hollow and forms an aperture extending over all its length. 
         [0095]    Shaft  131  has two fluid communication means defining female connectors  111   a ,  111   b . Each female connector  111   a ,  111   b  forms a hollow cylinder extending from shaft  131  in a direction radial to the latter. 
         [0096]    Two pipes housed partly in the aperture in shaft  131  respectively ensure that the fluid flows between first female connector  111   a  and an incoming water circuit, and second female connector  111   b  and a water outgoing circuit. 
         [0097]    The first and second means of communication are arranged so that male connectors  121   a ,  121   b  are able to penetrate female connectors  111   a ,  111   b  by inserting shaft  131  into boiler  120 . This co-acting of the first and second means of communication provides fluid communication between boiler  120  and the machine incoming and outgoing water circuits. 
         [0098]    The assembly is arranged so that the uniting of boiler  120  and support  110  takes place by the translation of boiler  120  relative to shaft  131  in a direction radial to the latter. This ensures that rotational movement takes place around an axis that is appreciably perpendicular to the direction of translational movement. Advantageously, this translation takes place in an inclined direction of between 30 and 60° relative to the vertical. 
         [0099]    A stop  132  in translation on shaft  131  that is intended to come into contact with underside  125  in order to stop translation of boiler  120  relative to shaft  131  may be provided on the latter. When stop  132  comes into contact with underside  125 , boiler  120  is in a so-called engaged position. 
         [0100]    In this engaged position, boiler  120  is able to freely rotate around the rotational axis on a given angular part. 
         [0101]    Chassis  130  is equipped with a rotational stop arranged so as to stop the rotation of boiler  120  when this is positioned appreciably vertically above shaft  131 . 
         [0102]    In this position, boiler  120  is assembled on the support. 
         [0103]    Chassis  130  has two flanges that are appreciably flat and vertical, extending the bearings, and spreading each one in a plane that is appreciably perpendicular to the axis of rotation. Chassis  130  also has a flat and vertical side wall extending from one flange to the other. It also has a cover  117  on its upper end adjoining the side wall and extending horizontally from one flange to the other. 
         [0104]    Cover  117  has a notch  133  designed to receive handle  123  of boiler  120  when in the assembled position. 
         [0105]    The rotational stop consists of notch  133  which handle  123  comes into contact with on rotation of boiler  120 . 
         [0106]    According to one embodiment, the rotation stop consists of the side wall of chassis  130  which side  127  of boiler  120  comes into contact with on rotation of the latter. 
         [0107]    The respective dimensions of support  110  and boiler  120  are chosen so that in the assembled position, boiler  117  acts as translational stop preventing any withdrawal or disengagement of male connectors  121   a ,  121   b  from female connectors  111   a ,  111   b . The movement of boiler  120  relative to shaft  131  is stopped by top  128  coming into contact with cover  117 . 
         [0108]    Therefore, even if the pressure of the water circulating between boiler  120  and the incoming and outgoing circuits applies substantial force tending to break the engagement of boiler  120  on shaft  131 , any risk of a disengagement between these two latter components is overcome by the arrangement of cover  117 . 
         [0109]    This embodiment provides considerable mechanical stability and excellent tightness of the fluid connection. Moreover, it permits particularly simple and fast assembly and disassembly of boiler  120  relative to support  110 . 
         [0110]    The assembly includes the two first means of electrical connection  126  positioned on underside  125  and second means of electrical connection  116  positioned on translational stop  132  so that it comes into contact with the first means of connection  126  when boiler  120  is engaged on shaft  131 . The second means of connection  116  are electrically connected to an electrical supply circuit by wires or electrical tracks housed in the aperture of shaft  131 . 
         [0111]    In a variant embodiment, first means of connection  126  can be arranged on top  128  of boiler  120  and second means of connection  116  are arranged on cover  117  of support  110 . In this variant, boiler  120  and the feed are electrically connected electrically when boiler  120  is in the assembled position. 
         [0112]    In a variant embodiment, the second means of connection  116  may be arranged on the side wall of support  110  and the first means of connection  126  are on side  127  arranged opposite the side wall when boiler  120  is in the assembled position. 
         [0113]    The assembly of boiler  120  on support  110  takes place through the following steps:
       boiler  120  is inclined at an angle of between 20 and 70° relative to a horizontal that coincides appreciably with the rotational axis of shaft  131  so that each male connector is arranged opposite a female connector,   boiler  120  is translated relative to support  110  so that there is co-action between the first and second means of communication,   boiler  120  is applied on chassis  130  by turning it towards the latter around the axis of rotation until boiler  120  being stopped by against the rotational stop.       
 
         [0117]    Thus, this example of the embodiment ensures the uniting of boiler  120  to on the support, creates fluid communication between boiler  120  and the water incoming and outgoing circuits and the electrical connection of boiler  120  to a power supply using simple, quick steps that require no tools or assembly accessories. 
         [0118]    Boiler  120  and the first means of communication  126  co-act respectively with the side wall of support  110  and the second means of communication  116  in order to ensure the positioning and fixing of boiler  120  on support  110 . In this embodiment, boiler  120 , first means of communication  126 , the side wall of support  110  and second means of communication  116  form assembly means arranged so as to allow selective uniting and disuniting of boiler  120  on support  110 . Thus, the means of communication contribute to uniting boiler  120  and support  110 . 
         [0119]    In a variant of this second embodiment, the electrical wires and the water pipes are installed in one or several grooves made in shaft  131 . 
         [0120]    The invention is not limited to the variants of this second embodiment described above as examples illustrating the invention and extends notably to boilers in which the rotational axis is not horizontal but is sloping or vertical. 
         [0121]    The translational movement always takes place in a direction that is appreciably radial to the rotational axis. Thus, the rotational movement takes place around an axis that is appreciably perpendicular to the direction of the translational movement. 
         [0122]    In a variant, support  110  may include appropriate locking means allowing selective locking and unlocking of boiler  120  on support  110  in the assembled position. These locking means may include in particular a pin acting as the rotational stop for boiler  120 . 
         [0123]    Advantageously, the assembly is arranged so that the angular movement of boiler  120  required for the assembly or disassembly of the latter and support  110  is between 30 and 60°. 
         [0124]    The present invention is not limited to the embodiment described above but extends to all embodiments conforming to this spirit. 
       REFERENCES 
     1 st  Embodiment 
       [0000]    
       
           10 . Support 
           11   a . Female connector 
           11   b . Female connector 
           12 . Opening 
           13 . Recess 
           14 . Female component 
           15 . Bottom 
           16 . Second means of electrical connection 
           17 . Cover 
           18 . Side wall 
           20 . Boiler 
           21   a . Male connector 
           21   b . Male connector 
           22 . Throat 
           23 . Handle 
           24 . Male component 
           25 . Underside 
           26 . First means of connection 
           27 . Side 
           28 . Top 
       
     
       2 nd  Embodiment 
       [0000]    
       
           110 . Support 
           111   a . Female connector 
           111   a . Female connector 
           112 . Opening 
           113 . Recess 
           115 . Bottom 
           116 . Second means of electrical connection 
           117 . Cover 
           118 . Side wall 
           119 . Flange 
           120 . Boiler 
           121   a . Male connector 
           121   a . Male connector 
           122 . Throat 
           123 . Handle 
           125 . Underside 
           126 . First means of connection 
           127 . Side 
           128 . Top 
           130 . Chassis 
           131 . Shaft 
           132 . Stop in translation 
           133 . Notch