Compact, leakless, and power-efficient packaged terminal air conditioner (PTAC) with an evaporating element for the meltwater

A packaged terminal air conditioner (PTAC) system (300), comprising:

• a sleeve (106) embodying an indoor portion (102), and an outdoor portion (104), the outdoor portion (104) embodying outdoor components is separated from the indoor portion (102) embodying indoor components by an intermediate wall (105), wherein the sleeve (106) is provided with a backplate (203) connecting a plurality of sidewalls (106a-106d) of the sleeve (106) and wherein the backplate (203) comprises a cut-out section (204) for mounting an outdoor fan (205) thereon such that the outdoor fan 205 is laid outside an external wall along the transverse direction T, and an opening (206) for outdoor air to enter within the outdoor portion (104);
• an ERV or HRV unit accommodated in a space located within the sleeve (106) of the PTAC system (300) to decrease the work done by a compressor (114) of the outdoor portion (104) and/or decrease the overall power consumption by the PTAC system (300) and meet the air conditioning requirements of a living space and keep the living space appropriately cooled or heated;
• an air sealing frame (400) having a plurality of lips (402a-402d) extending a predetermined length and covering plurality of sidewalls (106a-106d) of the sleeve (106), the air sealing frame (400) is configurable within the sleeve (106) of the PTAC system (100) to cover infiltration gaps between interior walls of the sleeve (106) and the intermediate wall (105) separating indoor and outdoor portions (102,104) or the infiltration gaps between exterior of the sleeve (106) and the cut-out section on the external wall (200) where the sleeve (106) is mounted;
• wherein, the air sealing frame (400) facilitates mounting of various indoor components within the sleeve (106 up to a predefined depth of the sleeve (106), thereby reducing the effective protruding length of the indoor portion (102) within the interior of the living space;
• wherein, the lips (402a-402d) of the air sealing frame (400) further include a sealing gasket (402q) at their back for effective sealing of the infiltration gaps;
• and wherein, the ERV or HRV unit comprises two inlets and two exhaust ports, one of the exhaust ports (207) being positioned to redirect the exhausted air through a curvy route/channel (208) located within the outdoor portion (104) and toward an outdoor heat exchanger (112) of the outdoor portion (104) for increased power efficiency and reducing the work done by the compressor (114).