Patent Abstract:
An enbloc air conditioner has a condenser unit and an evaporator unit aligned one behind the other on opposite sides of a plane transverse to the air flow path.

Full Description:
The present invention relates to an enbloc air conditioner. 
     It is well known that air conditioners are used to obtain optimal comfort conditions in working or dwelling rooms by controlling temperature and/or humidity. 
     According to a first design, conditioners are provided with two separated units, more particularly a condenser unit arranged outside and connected by refrigerant conveying tubes to an evaporator unit arranged in the room to be conditioned. 
     A drawback of the above mentioned installations is the need of providing ducts for the refrigerant conveying tubes and cables for the electric power. 
     Another drawback is that the outside arrangement of the condenser unit generally involves aesthetic problems, especially in buildings of the old town centers. 
     In order to remove such drawbacks enbloc conditioners are now available combining the condenser unit and the evaporator unit in a single structure which is generally installed in the wall inside the room to be conditioned. 
     More particularly the condenser unit is in communication with outside through inlet and outlet for outside air made in the building walls or in the window panes, while the evaporator unit is provided with intake and delivery ways for the air to be treated which is withdrawn from the room and then introduced again in the same room after the treatment. 
     To this purpose several designs are available, one of which for instance having the condenser unit and the evaporator unit arranged in the same container juxtaposed one aside the other. 
     According to other designs the condenser unit and the evaporator unit are still arranged in a single container but juxtaposed one above the other. 
     These enbloc conditioners in both above mentioned designs do not have any environmental impact to the outside excepting the air inlet and outlet of the condenser unit. 
     Said conditioners however occupy more space in the room where they are installed, just because both condenser and evaporator units are arranged inside, and such overall dimensions may not be acceptable in some situations, for example in small volume rooms such as little flats or studios. 
     Another problem of the enbloc conditioners is the arrangement in the room to be conditioned of both condenser and evaporator units with corresponding fans involving an increase of noise. In some cases such a noise may not be acceptable especially when the conditioner is to be installed for instance in bedrooms. 
     SUMMARY OF THE INVENTION 
     The present invention aims at overcoming said limitations and drawbacks. 
     More particularly an object of the invention is to provide an enbloc air conditioner having smaller size relative to equivalent enbloc conditioners of the prior art with the same output. 
     Another object of the invention is to provide a conditioner emitting lower noise relative to equivalent enbloc conditioners of the prior art. 
     The foregoing objects are attained by an enbloc air conditioner that according to the main claim comprises:
         a condenser unit crossed by an outside air flow to the room to be conditioned between at least an inlet and at least an outlet;   an evaporator unit crossed by a flow of air internal to the room to be conditioned between at least an intake and at least a delivery way,
 
and wherein said condenser unit and said evaporator unit are arranged in a single container, in said container a first part is defined wherein said evaporator unit is arranged and a second part in which said condenser unit is arranged, only said first part of said container in which said evaporator unit is arranged, projecting inside said room to be conditioned, said parts are aligned one behind the other according to an axis parallel to the direction of the inlet and the outlet of said external air flow, through said at least one inlet and one outlet of said condenser unit, said inlet and said outlet being placed in a substantially horizontal plane and said inlet and outlet comprising two holes, the perimetral external surface of said second part of said container being suited to be coupled to the surfaces of opening made in a wall of said room to be conditioned, said evaporator unit being provided with an inclined air delivery opening pointing downwards.
       

     According to the invention the container defines a first part where the evaporator unit is arranged and a second part where the condenser unit is arranged, wherein only the first part of the container where the evaporator unit is arranged is projecting inside the room while the second part where the condenser unit is arranged is built in into the wall. 
     According to the invention the container defines a first part where the evaporator unit is arranged and a second part where the condenser unit is arranged, wherein only the first part of the container where the evaporator unit is arranged is projecting inside the room while the second part where the condenser unit is arranged is built in into the wall. 
     Advantageously the enbloc conditioner of the invention when compared with equivalent conditioners of the prior art with equal output is less bulky and has a better aesthetic look for the room where it is installed relative to equivalent conditioners of the prior art. 
     Still advantageously the reduction of dimensions enhances installation of enbloc conditioners even in rooms of small size. 
     In a further advantageous way the possibility to arrange the condenser unit in the wall thickness, allows to obtain a deadening effect reducing noise in the room to be conditioned. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The foregoing objects and advantages will be better understood by the description of a preferred embodiment of the invention with reference to the accompanying sheets of drawings in which: 
         FIG. 1  is an isometric front view of the conditioner of the invention; 
         FIG. 2  is an isometric rear view of the conditioner of the invention; 
         FIG. 3  is an inner view of the conditioner of  FIG. 1 ; 
         FIG. 4  is an inner view of the conditioner of  FIG. 2 ; 
         FIG. 5  is a longitudinal section of the conditioner of the invention in the installed condition; 
         FIG. 5   a  is a cross sectional view of the conditioner of the invention in the installed condition; 
         FIG. 6  shows an installation form of the conditioner of the invention; and 
         FIGS. 7 and 8  show another installation form of the conditioner of the invention. 
     
    
    
     DESCRIPTION OF THE INVENTION 
     The air conditioner of the invention is shown in the isometric views of  FIGS. 1 to 5  where it is generally indicated with  1 . 
     One can see that the conditioner comprises a condenser unit generally indicated with  2 , crossed by a flow of outside air between an inlet  3  and an outlet  4  and an evaporator unit generally indicated with numeral  5 , crossed by a flow of air internal to the room to be conditioned between intakes  6   a ,  6   b  and a delivery way  7 . 
     More particularly the inlet  3  and outlet  4  consist of holes of big diameter, preferably not lower than 160 mm. 
     Both the condenser unit  2  and the evaporator unit  5  are of a kind known per se wherein:
         the condenser unit  2  comprises: a compressor  8  for the refrigerant, a fan  9  withdrawing external air through the inlet  3  and a condenser bank  10  crossed by the air conveyed by the fan  9  before passing through the outlet  4 ;   the evaporator unit  5  comprises: a fan  11  withdrawing internal air through the front intake  6   a  and top intake  6   b  and an evaporator bank  12  arranged upstream on the suction side of fan  11 , cooling air before it goes out through the delivery way  7  directed downwards.       

     The compressor  8 , the condenser bank  10  and the evaporator bank  12  are hydraulically connected to each other to refrigerant exchange tubes and additional means according to the prior art and moreover the compressor  8  and the fans  9  and  11  are electrically connected to the electricity mains. 
     According to the invention, both the condenser unit  2  and the evaporator unit  5  are arranged in a single container  13  in which they are aligned one behind the other according to an axis X parallel to the directions of inlet Xi and outlet Xu of the outside air flow through the condenser unit  2 . 
     More particularly in the container  13  a first part  13   a  is defined in which the evaporator unit  5  is arranged and a second part  13   b  in which the condenser unit  2  is arranged. 
     The evaporator unit  5  and the condenser unit  2  are separately housed within their respective first and second parts of the housing. Wall  20 , lying in a single plane P, perpendicular to the axis X, extends completely across the housing, as shown in  FIGS. 4 ,  5 , and  5   a.    
     On installation the second part  13   b  as shown in greater detail in  FIGS. 5 and 6 , is arranged in a proper opening made in the wall W of the room with the inlet  3  and outlet  4  facing the outside E, while the first part  13   a  of the same container  13  is facing the internal room A to be conditioned. 
     In such a way the space occupied by the conditioner inside the room A to be conditioned is limited only to the projection of the first part  13   a  to the advantage of space occupation and aesthetic look, particularly felt in rooms of small size such as for instance the rooms of small flats or studios. 
     Moreover the arrangement of the second part  13   b  comprising the entire condenser unit  2  in the thickness of the wall W, absorbs the noise of the fan  9  that consequently is not transmitted inside the room A. 
     In this way in the room A to be conditioned the same noise level is obtained, that is found when using traditional conditioners not of the enbloc type provided with a separate condenser unit arranged outside. 
     An installation form of the conditioner of the invention is shown in  FIG. 6  where one can see that the second part  13   b  of the container  13  is arranged in the top and within the thickness of the wall W while only the first part  13   a  corresponding to the evaporator unit projects inside the room A. One can see that the intake  6   a  and  6   b  are facing the front part and the ceiling of the room respectively, and the delivery way  7  is inclined facing downwards. 
     It is anyway clear that such an arrangement is only an illustrative one as the user may choose other configurations more suitable for his requirements. 
     Another installation form of the conditioner of the invention is shown in  FIG. 7  which is useful as removable application especially by night when the blinds are closed. 
     Indeed in this installation form one can see that the conditioner generally indicated with  1 , is arranged on the windowsill D of a window F where the second part  13   b  of the container  13  where the condenser unit  2  is arranged, is facing the outside E relative to the descent plane of the rolling shutter P. 
     A suitable insulation  15  is arranged at the conditioner sides to fit its size to the dimensions of the window F, while a spacer S is arranged on the windowsill D to make the conditioner flush with the window frame T, the conditioner being fixed to the windowsill D, through one or more clamps M. 
     On the basis of the foregoing description one can see that the conditioner of the invention attains all the intended objects. 
     More particularly the object is attained to provide an enbloc conditioner requiring less space inside the room where it is installed in comparison with equivalent enbloc conditioners of the prior art. 
     The further object is also attained to provide a conditioner having a lower environmental impact to the outside relative to the conditioners of the split system because the condenser unit is fully arranged inside the wall in which the conditioner is installed. 
     It is clear that the conditioner of the invention may be made of any shape and with different output power according to the requirements. 
     Possible constructional variations that should be made even neither described nor shown in the figures, when falling within the scope of the appended claims, should be considered all protected by the present invention.

Technology Classification (CPC): 5