Patent Publication Number: US-11035584-B1

Title: Efficent air conditioning system

Description:
BACKGROUND 
     1. Field of the Invention 
     The present invention relates generally to an air conditioning system for the removal of heat to control the climate in a building or other enclosed space. 
     2. Description of Related Art 
     Air conditioning systems are well known in the art and are effective means to move heat from an indoor, enclosed space to the outside. For example,  FIG. 1  depicts a conventional air conditioning system  101  having a compressor  103 , condenser  105  and evaporator  107  arranged in a cycle using a fluid such as refrigerant that passes through each to move heat from one space (where the evaporator is located) to another (where the condenser is located). 
     One of the problems commonly associated with system  101  is its limited efficiency. For example, on hot days, higher temperature and enthalpy of the refrigerant exiting the condenser limits the ability of the evaporator to absorb heat during the next portion of the cycle. 
     Accordingly, although great strides have been made in the area of air conditioning systems, many shortcomings remain in the quest to improve efficiency. 
    
    
     
       DESCRIPTION OF THE DRAWINGS 
       The novel features believed characteristic of the embodiments of the present application are set forth in the appended claims. However, the embodiments themselves, as well as a preferred mode of use, and further objectives and advantages thereof, will best be understood by reference to the following detailed description when read in conjunction with the accompanying drawings, wherein: 
         FIG. 1  is a diagram of a common air conditioning system; 
         FIG. 2  is a diagram of an efficient air conditioning system in accordance with a preferred embodiment of the present application; and 
         FIG. 3  is a flowchart of the preferred method of use of the system of  FIG. 2 . 
     
    
    
     While the system and method of use of the present application is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and are herein described in detail. It should be understood, however, that the description herein of specific embodiments is not intended to limit the invention to the particular embodiment disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present application as defined by the appended claims. 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Illustrative embodiments of the system and method of use of the present application are provided below. It will of course be appreciated that in the development of any actual embodiment, numerous implementation-specific decisions will be made to achieve the developer&#39;s specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure. 
     The system and method of use in accordance with the present application overcomes one or more of the above-discussed problems commonly associated with conventional air conditioning systems. Specifically, the invention of the present application sub-cools the liquid refrigerant (without requiring another compressor) before it enters the evaporator to reduce the temperature and enthalpy and leave more ability to absorb heat from the enclosed area through the evaporator. This and other unique features of the system and method of use are discussed below and illustrated in the accompanying drawings. 
     The system and method of use will be understood, both as to its structure and operation, from the accompanying drawings, taken in conjunction with the accompanying description. Several embodiments of the system are presented herein. It should be understood that various components, parts, and features of the different embodiments may be combined together and/or interchanged with one another, all of which are within the scope of the present application, even though not all variations and particular embodiments are shown in the drawings. It should also be understood that the mixing and matching of features, elements, and/or functions between various embodiments is expressly contemplated herein so that one of ordinary skill in the art would appreciate from this disclosure that the features, elements, and/or functions of one embodiment may be incorporated into another embodiment as appropriate, unless described otherwise. 
     The preferred embodiment herein described is not intended to be exhaustive or to limit the invention to the precise form disclosed. It is chosen and described to explain the principles of the invention and its application and practical use to enable others skilled in the art to follow its teachings. 
     Referring now to the drawings wherein like reference characters identify corresponding or similar elements throughout the several views,  FIG. 2  depicts a diagram of an efficient air conditioning system in accordance with a preferred embodiment of the present application. It will be appreciated that system  201  overcomes one or more of the above-listed problems commonly associated with conventional air conditioning systems. 
     In the contemplated embodiment, system  201  includes a compressor  203 , condenser  205 , receiver  207 , a first heat exchanger  209 , a second heat exchanger  211  and an evaporator  213  all in fluid communication via tubes  215  and a fluid e.g. refrigerant. 
     In use, the fluid exiting the condenser  205  is collected in the receiver  207  so that a full column of liquid (of the fluid) enters the first heat exchanger  209 . The first heat exchanger  209  uses fluid from the evaporator  213  mixed with fluid from the second heat exchanger  211  to absorb heat from the fluid from the receiver  207 . The second heat exchanger  211  uses fluid from the first heat exchanger  209  to transfer heat to the fluid exiting therefrom after passing through a thermostatic expansion valve  217   a . The fluid exiting the second heat exchanger  211  supplies a thermostatic expansion valve  217   a  and also the thermostatic expansion valve  217   b , which in turn, supplies the evaporator  213 . 
     A unique feature believed characteristic of the present application is that receiver  207  enables the first heat exchanger  209  to continuously function without interruptions in the fluid flow. 
     Another unique feature is the use of the first heat exchangers  209  and second heat exchanger  211  and additional thermostatic expansion valves  217  arranged to provide sub-cooled fluid (in liquid state) to the entry of the thermostatic expansion valve  217   b.    
     Referring now to  FIG. 3  the preferred method of use of the system  101  is depicted. Method  301  includes assembling an air conditioning system with multiple heat exchangers  303 , allowing the system to operate  305 , allowing the system to create a sub-cooled fluid during the cycle  307  and taking advantage of the efficiencies created by the sub-cooled fluid acting in the system  309 . 
     The particular embodiments disclosed above are illustrative only, as the embodiments may be modified and practiced in different but equivalent manners apparent to those skilled in the art having the benefit of the teachings herein. It is therefore evident that the particular embodiments disclosed above may be altered or modified, and all such variations are considered within the scope and spirit of the application. Accordingly, the protection sought herein is as set forth in the description. Although the present embodiments are shown above, they are not limited to just these embodiments, but are amenable to various changes and modifications without departing from the spirit thereof.