FIELD OF INVENTION

[0001] The present invention generally relates to heat exchangers and, more particularly, relates to a heat exchanger that incorporates connector assembly for effective heat transfer characteristics.

BACKGROUND AND PRIOR ART

[0002] Heat exchangers are used for efficient transfer of thermal energy, particularly transferring heat from a hot to a cold or vice versa between two or more fluids, or between a solid surface and a fluid, or between solid particulates and a fluid. The fluids may include liquids and/or gases which can be a single compound or mixtures. Typical applications involve space heating/ cooling, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries and natural gas processing.

[0003] Heat exchangers may be classified according to transfer process, construction, flow arrangement, serpentine arrangement pattern, surface compactness, number of fluids and heat transfer mechanisms or according to process functions etc.,

[0004] Conventional heat exchangers require large number of sophisticated component parts including a pair of heat exchangers and two side plates for the casing, and sufficient heat-exchanging space at both sides of the heat exchangers. In addition, there are many restrictions imposed on its installation, by which most of the heat exchanging apparatus are limited to the floor-setting type, all these leading to the increase in cost for manufacture and installation of the heat exchanging apparatus.

[0005] Further, conventional heat exchangers require reliable technical services and experienced personnel for controlling and maintenance of the same. In addition, the end-users should know the fundamentals, or be informed of the basic layout procedure, regarding implementation of different heat exchangers in order for them to be in the position to judge and use them properly.

[0006] Heat exchangers have changed greatly over the years. If an excessively large surface area is required to achieve the desired heat transfer, the use of multiple exchangers, arranged in series and/or in parallel, is preferable than the use of a single and large exchanger. Multiple small exchangers are easier to inspect and maintain than large exchangers. Moreover, in a multiple exchanger configuration, when one of the units in the arrangement is out of service, the other units continue to operate at reduced throughput.

[0007] Generally, multiple heat exchangers have two serpentine heat exchanging tubes connected in parallel, with the fluid flow inlet or outlet tube then being connected to the respective ends of the two serpentine heat exchanging tubes of the bundle. The heat exchangers comprises three parts, namely a threaded connector, an intermediate tubes, and two secondary tubes, which are pre-assembled by brazing and also connected respectively to the two serpentine heat exchanging tubes of the bundle. The connection of the two secondary tubes to the two serpentine heat exchanging tubes of the bundle is carried out either by brazing, or else by means of special swaging rings.

[0008] However, multiple exchangers or heat exchanger also encounter many challenges, including problems related to uniform cooling or heating of the surface area and complications arising due to the brazed joints for connecting the serpentine heat exchanger. U.S. Pat. No. 5,224,537 entitled, "Connecting device for connecting a serpentine heat exchanger to a fluid flow pipe" discusses about the impediment in the connection due to brazed joints.

[0009] Conversely, current trends in energy supply and use are economically, environmentally and socially unsustainable. Heat exchangers account for almost a third of final energy consumption globally and are an equally important source of CO ₂ emissions. Presently, heat exchangers are estimated to account for roughly half of global energy consumption in buildings.

[00010] Several attempts have been made to increase the efficiency of the heat exchangers by varying the design, flow rate, temperature of inlet fluid, arrangement of the heat exchanging tube pattern etc. However the level of effectiveness of heat transfer in heat exchangers is always a challenging problem. [00011] Therefore, there is a need to develop an improved heat exchanger that should not only be efficient in heat exchange but also provide substantially uniform temperature across the heat exchanger. Further, such heat exchanger should also easy to install, dismantle and maintain and also can be used in various applications/region.

OBJECTS OF THE INVENTION

[00012] An object of the present invention is to provide a heat exchanger which can improve uniform temperature across the heat exchanger.

[00013] Another object of the present invention is to provide multi-stage heat exchangers which can improve uniform temperature across the heat exchangers.

[00014] Another object of the present invention is to provide a heat exchanger which can have improved heat efficiency thereby enabling to reduce heat exchanging duration.

[00015] Yet another object of the present invention is to provide a heat exchanger which can be easy to install, dismantle and maintain the heat exchanger with minimal resources.

[00016] Still another object of the present invention is to provide a heat exchanger which can be used for various applications at various region including floor, ceiling, wall, solar panel, air conditioning duct.

[00017] Another object of the present invention is to provide a heat exchanger which includes at least a heat exchanging hollow member, at least a connecting hollow member, and one or more layer to hold the hollow member(s).

[00018] Another object of the present invention is to provide a layer which can be made of flexible and/or stabilized material.

[00019] Another object of the present invention is to provide a unique connector assembly to connect the heat exchanging hollow member with the adjacent connecting hollow member. [00020] Another object of the present invention is to provide plurality of components in the connector assembly to facilitate maintenance and ensure leak-proof connection between the hollow members.

[00021] Another object of the present invention to provide a plunger mechanism inside the connector to facilitate efficiently mixing of variable temperature fluids inside corrector and also to build desired pressure inside the connector to enable stable fluid movement inside the hollow member.

[00022] The other objects and advantages of the present invention will be apparent from the following description when read in conjunction with the accompanying drawings which are incorporated for illustration of preferred embodiments of the present invention and are not intended to limit the scope thereof.

SUMMARY OF THE INVENTION

[00023] In view of the foregoing, an embodiment herein provides a heat exchanger comprises of at least a heat exchanging hollow member for exchanging heat between fluid in heat exchanging hollow member and surrounding, at least a connecting hollow member for passing inlet and outlet fluid through the heat exchanger, at least a connector for connecting the heat exchanging hollow member to a adjacent connecting hollow member, and one or more layer provided to hold the hollow member(s). The connecting hollow member is placed in between outlet port of one connector and inlet port of another connector.

[00024] The inlet end of the heat exchanging hollow member is connected to the outlet port of one connector and outlet end of the heat exchanging hollow member is connected to the inlet port of another connector, according to an embodiment. Further, the connecting hollow member and the heat exchanging hollow member are placed inside and/or over the layer(s).

[00025] According to an embodiment, the connector comprises of a primary connecting unit and a secondary connecting unit. The primary connecting unit includes plurality of inlet ports, a chamber and plurality of internal passage. Further, the primary connecting unit can also include a plunger. The secondary connecting unit includes plurality of outlet ports, a chamber, a plunger and plurality of extension passage. The plunger is positioned inside the chamber for mixing and pressurizing the liquids passing from the connecting hollow member and heat exchanging hollow member. Further, the plunger can be either static or dynamic. Moreover, the plunger can be adjusted mechanically or thermostatically or it can be controlled by any known techniques.

[00026] According to an embodiment, the connector can be placed in between the layer of one heat exchanger and the layer of a subsequent heat exchanger. Further, the layer can be provided in the form of isolation layer and/or thermal layer. The isolation layer reduces heat dissipation between heat exchanging hollow member and the surroundings, and the thermal layer protects the hollow member from environment impact and also to improve heat dissipation between exchanging hollow member and the surroundings. The layers can either be made of stabilized or flexible materials. Further, the thermal layer is made of suitable material to have robust construction and to withstand from environment impact. In an embodiment, a heat conductive material is provided in between the thermal layer and the hollow member.

[00027] According to an embodiment, the primary connecting unit further includes pair of joining slot near connecting region. The primary connecting unit can be provided with optionally pair of connecting slot on its surface. The secondary unit further includes pair of joining slot near connecting region. The secondary connecting unit can be provided with optionally pair of connecting slot on its surface. Accordingly, the joining slots can enable to join and rigidly hold the primary connecting unit and secondary connecting unit together. Whereas the connecting slots can enable to connect the primary connecting unit and secondary connecting unit using a tool during installing the heat exchanger.

[00028] According to an embodiment, the connector can include pair of protecting element, and the protecting element can include end elements for closing the passage of the primary connecting unit and secondary unit.

[00029] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating preferred embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF DRAWINGS

[00030] The detailed description is set forth with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The use of the same reference numbers in different figures indicates similar or identical items.

[00031] Fig. 1.1 illustrates front view of heat exchanger according to an embodiment herein;

[00032] Fig 1.2 illustrates side of view of one or more layer with the hollow member, according to an embodiment herein;

[00033] Fig. 2a illustrates front view of a connector assembly in locked position according to an embodiment herein;

[00034] Fig. 2b illustrates isometric view of the connector assembly in locked position according to an embodiment herein;

[00035] Fig. 2c illustrates exploded isometric view of the connector assembly according to an embodiment herein;

[00036]Fig. 3a illustrates internal view of the connector assembly according to an embodiment herein;

[00037] Fig. 3b illustrates magnified of section B according to an embodiment herein;

[00038] Fig. 4 illustrates perspective view of protecting elements of the connector assembly according to an embodiment herein;

[00039] Fig. 5 illustrates a perspective view of first and last connectors in the heat exchangers according to an embodiment herein. DETAILED OF EMBODIMENTS

[00040] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.

[00041] As mentioned above, there is a need to develop an improved heat exchanger that should be efficient in heat exchange and improve uniform temperature across the heat exchanger, and also easy to install, dismantle and maintain, which can be used in various applications/region. The embodiments herein achieve this by providing a heat exchanger which includes plurality of heat exchanging hollow member, plurality of connecting hollow member, and one or more unique connector assembly for connecting the connecting hollow member and heat exchange hollow member, thereby providing effective heat transfer across the heat exchanger. Referring now to the drawings, and more particularly to FIGS. 1 through 5, where similar reference characters denote corresponding features consistently throughout the figures, there are shown preferred embodiments

[00042]Now referring to Fig. 1, the heat exchanger 100 includes at least a hollow member 101 arranged in a specific manner [herein referred as heat exchanging hollow member] according to an embodiment. In addition, the heat exchanger 100 includes at least a connecting hollow member 102 and one or more connector assembly 103. According to an embodiment, the hollow member 101/102 can include but not limited to tube, pipe, conduit, which can be of any shape, any material and any dimension.

[00043]In an embodiment, the heat exchanging hollow member 101 and connecting hollow member 102 are connected to each other by connector assembly 103 [also called connector] positioned at the heat exchanger. The connector assembly 103 comprises multiple inlet ports 104 and multiple outlet ports 105. The heat exchanging hollow member 101 and connecting hollow member 102 along with connector assembly 103 are attached to a stabilized or flexible layer 106.

[00044] Now referring to Fig 1.2, an isolation layer 106a and a thermal layer 106b are employed in the heat exchanger 100 to increase the effectiveness, according to an embodiment. Fig 1.2a illustrates an isolation layer made of fabric, according to an embodiment. Fig 1.2b illustrates thermal layer and isolation layer made of gypsum plate, according to an embodiment. Fig 1.2c illustrates thermal layer and isolation layer made of mat, according to an embodiment. Fig 1.2d illustrates isolation layer made of stabilized material and thermal layer made of flexible material, according to an embodiment. Fig 1.2e illustrates a pair of heat exchanging hollow member placed over the layer, according to an embodiment. The isolation layer 106a reduces heat dissipation between heat exchanging hollow member 101 and the surroundings, and the thermal layer 106b protects the hollow member from environment impact and also to improve heat dissipation between exchanging hollow member 101 and the surroundings, according to an embodiment. The thermal layer 106b is made of suitable material to have robust construction and also protect the hollow member 101 and 102 from environment impact and or friction caused by plurality of events including but not limited to furniture, tools in installation phase or even by the people walking over the heat exchanger 100 etc. In addition, the thermal layer 106b can also protect the heat exchanger 100 from the dirt and other redundant bodies entering into the heat exchanger 100.

[00045] In an additional embodiment, a layer of heat conductive material 106c can be used in between the thermal layer 106b and hollow member 101/102 to dissipate the heat efficiently between the hollow member 101/102 and the thermal layer 106b in either ways. In one example, the heat conductive material 106c may include but not limited to aluminum, copper, carbon, metalized foil etc.

[00046] In another embodiment, composite material can be used to function as a heat conductive material. In one example, various composite materials can be chosen to conduct heat including but not limited to PVC. Additionally, mix materials which are mixtures of plastic and a conductive material can also be chosen as a heat conductive material.

[00047] In yet another embodiment, a fleece fabric having thin vaporized aluminum, copper or conductive layer on one or both sides can be preferably chosen for constructing heat conductive material.

[00048] According to one embodiment, the fluid enters into the heat exchanger 100 through the inlet port 104 of the connector assembly 103 and surges into the heat exchanging hollow member 101 and connecting hollow member 102. Further, the preferred fluid may be either hot or cold depending on the comfort level or requirement of the personnel and/or other instruments functioning around the space.

[00049]In an embodiment, the hollow member 101/102 are arranged in such a way that the fluid flowing inside heat exchanging hollow member 101 exchanges the heat with the surroundings and the fluid flowing through the connecting hollow member 102 compensates for the loss of heat inside the heat exchanging hollow member 101. Accordingly, as the fluid continues to flow inside the heat exchanging hollow member

101 in a zigzag path, it continuously exchanges heat with the surroundings and thereby significantly changes the surrounding space temperature based on the fluid temperature.

[00050] Consequently, as the fluid flows through heat exchanging hollow member 101 , it gains some heat or it loses some heat depending on whether the surrounding space is to be heated or cooled, and accordingly the fluid temperature can be chosen. Further the fluid enters into connector assembly 103 which acts as a mixing chamber and pressurizes the mixed fluid. The fluid flowing through the heat exchanging hollow member 101 and connecting hollow member 102 mix together inside the connector assembly 103, wherein the inlet fluid entering through the connecting hollow member

102 compensates to the differential temperature of the fluid flowing through the heat exchanging hollow member 101, thereby maintaining substantially uniform heat transfer rate all through the length of the heat exchanger 100. [00051] Fig. 2a and Fig. 2b illustrate front and isometric views of connector assembly 103 respectively in locked position according to an embodiment. Accordingly, the connector assembly 103 comprises plurality of components including primary connecting unit 103A includes inlet ports 104 and a secondary connecting unit 103B includes plurality of outlet ports 105, two connecting units. Further, the connector assembly 103 can be constructed with a finned structured frame 107 for enabling the connector to suitably place and/or fix within the layer(s).

[00052] According to an embodiment, an outlet port 105 of last secondary connecting unit 103B can be connected to another outlet port 105 of the same secondary connecting unit, so that the outlet fluids can be returned via the connecting hollow member to the first primary connecting unit. According to this embodiment, the internal arrangement can be modified to separate the returning outlet fluid and inlet fluid.

[00053] The number of inlet 104 and outlet ports 105 can be preferably kept identical in numbers, according to an embodiment. Further, the number of inlet 104 and outlet ports 105 can also differ in number according to another embodiment. Fig.2c shows an exemplary arrangement of connector assembly 103 which can be useful for understanding the present invention, wherein the exploded view of the connecting units 103 A and 103B is illustrated. Here in this example, the number of inlet and outlet ports is limited to three. However, the number of ports can considerably vary depending on the extent of heat exchanging necessary. In addition, slots 201 A and 201B are provided on the primary connecting unit 103A to ensure proper closure and leak- free connection with the secondary connecting unit 103B.

[00054]The slots 201A and 201B can be provided on opposite ends near the connecting region of the primary connecting unit 103A, according to an embodiment. Similarly, another two slots 202A and 202B can be provided on the secondary connecting unit 103B to ensure leak-free connection between the two connecting units 103A, 103B. Additionally, threaded grooves 204A and 204B are provided on either sides of the slots 201A and 201B to bolt and tighten the slots of the primary and secondary connecting units together. According to an embodiment, pair of connecting slots 108 is provided on the primary connecting unit and secondary connecting unit. The connecting slots 108 can enable to connect the primary connecting unit 103A and secondary connecting unit 103B using a machine tool during installing the heat exchanger.

[00055] In an embodiment, internal passages 205 of the primary connecting unit 103 A can be grooved at the extreme position to facilitate bonding between these two connecting unit 103A, 103B. Extension passage 203A and 203B are provided on the secondary connecting unit 103B to bond with the internally grooved passage of the primary connecting unit 103 A.

[00056] Fig. 3a illustrates internal view of the connector assembly 103 in locked position according to an embodiment. At least an extension passage 205A/205B is provided for the flow of fluid inside the connecting units 103A and 103B. The passages can be selectively grooved to facilitate bonding between two connecting units 103A and 103B.

[00057] Further, the primary and secondary connecting units 103A and 103B are provided with chambers 301A and 301B respectively to allow mixing of fluids flowing at different temperature inside this chamber. The mixed fluid is pressurized inside the chamber 301A/301B due to its differential cross section before entering the hollow member in the subsequent heat exchanging module.

[00058]In an embodiment, the chamber 301A is constructed in such a way that the cross section reduces towards the apex facilitating the fluid to build pressure before it flows into the secondary connecting unit 103B. The fluid flowing through the heat exchanging hollow member 101 gets mixed with the inlet fluid that is flowing through the connecting hollow member 102 thereby gaining the lost heat energy.

[00059]In an embodiment, a plunger 302 is positioned inside the chamber 301B which can be in static position or can reciprocate. The position of the plunger 302 can be adjusted suitably in accordance with the desired flow rate, temperature and other operating conditions. As the plunger 302 reciprocates inside the chamber 301B it seals the entry of preferred passages allowing the fluid to selectively pass through the chosen outlet port 105. Further, the plunger 302 can be either static or dynamic. In case of dynamic plunger, an optional knob (not shown in figure) can be provided at the top end of the connector assembly 103 to adjust the position of the plunger. The adjustment can be done either manually or mechanically or thermostatically or it can be controlled by any known techniques.

[00060] In an embodiment, the connector assembly 103 is provided with O-rings 303 positioned at the conjunction of connecting units 103A and 103B as illustrated in Fig. 3a. In another embodiment, the connector assembly 103 can be provided with X-ring or any other sealing materials. The magnified view of the O-rings 303 is illustrated in Fig. 3b. Accordingly, the O-rings 303 are placed over the extension passages 203A and 203B as shown in Fig. 2c. The O-rings along with the extension passages 203A and 203B are pushed inside the grooved passage to fit the primary connecting unit 103B with the secondary connecting unit 103A thereby offering a tight, leak-free joint.

[00061] Fig. 4 illustrates perspective view protecting elements 400 of the connector assembly 103 according to an embodiment. Two slots 401 A, 401B may be provided in the protecting elements 400 that can fit into the slots 201A and 201B of primary connecting unit 103 A and similarly slots 402A, 402B may be provided in the protecting element 400 that can fit into slots 202A and 202B. The protecting element 400 can be provided with male end element 403 for closing the internal passage 205 of primary connecting unit 103 A. Further, the protecting element 400 can be provided with female end element 404 for closing the extension passages 203 of secondary connecting unit 103B. Therefore, the protecting element 400 can facilitate to close the passages end of both connecting units 103A/103B while dismantling the connector 103.

[00062] Fig. 5 illustrates perspective view of the connectors 103 provided in entry and exit of fluids in the heat exchanger(s) in accordance with an embodiment. Accordingly, the female end passage 501 of primary connecting unit can be connected to the extension passage of the first connector in the heat exchanger. And male end passage 502 of secondary connecting unit can be connected the internal passage of end connector in the heat exchanger. Accordingly, the connector assembly 103 can be constructed without the fin structure frame 107 thereby reducing the weight of the heat exchanger 100 significantly.

[00063]In an embodiment, the heat exchanger 100 can be enclosed with one or more layer of stabilized or flexible materials 106. Further, the layer 106 can have different configurations depending on the nature of application where the heat exchanger 100 is to be employed.

[00064] In one example, the configuration of the layer can be a flexible mat which can be used in spaces including but not limited to buildings, houses etc. The flexible mat can be utilized to heat and or cool the inner and outside wall or floor or ceiling etc. of the above mentioned spaces.

[00065]In another embodiment, the heat exchanger 100 can be configured to be placed in conjunction with a panel. In one example, the heat exchanger 100 can be placed behind a Photovoltaic [PV] panel to cool down the panel and keep the temperature of the PV panel at the desired temperature level, thereby enabling to improve the efficiency of PV panel output. Further, the fluid received from the heat exchanger provided below the PV panel can be used for various applications including, but not limiting to, heating the boiler and/or melting snow or deicing.

[00066] In still another embodiment, the heat exchanger 100 can be configured to be employed as wall panel or wall elements. Accordingly, the hollow member 101 and 102 can be integrated into a soft wall or drywall material like gypsum. In one example, the heat exchanger 100 of above mentioned configuration can be employed in soft wall panels, prefab elements which may include a print or a painting over the surface to increase the aesthetic looks of the surrounding space etc.

[00067] In yet another embodiment, the heat exchanger 100 can be configured to function as heat exchanging net, wherein said exchanging net may utilize materials including but not limited to natural fibres like cotton, nettles, linen, silk or other chemical fibres like glass fibre, PVC, HDPE etc. Additionally, the heat exchanging nets can have a single and/ or double layer based on the requirement. Further, these heat exchanging nets can be hung or integrated with plurality of materials which may include but not limited to plaster, concrete, gypsum, plaster of paris, stucco etc.

[00068] The heat exchanger 100 according to an embodiment can be positioned in plural settings. Examples of different settings include, but are not limited to: fioor- setting; where the heat exchanger can be placed on the floor, wall-setting; where the heat exchanger is placed on the vertical wall, and also roof setting, inclined-setting, ceiling- setting etc., Further, it can be even wrapped around a device where heat exchanging is necessary.

[00069] Further, the diameter of the hollow member 101/102 may vary according to the length requirement, availability, type of application, operating conditions, pressure, and type of setting. In addition, plurality of high and low quality materials can be used for constructing the hollow member includes but not limited to ferro and non-ferro materials, plastics, natural materials etc.

[00070] In an embodiment, the fluid employed for heat exchanging can include but not limited to liquid like water, air, oil or any refrigerant. As different fluids have different flow-resistance, they are selected based on the plural factors such as the operating conditions, ambient temperature, diameter of the hollow member, etc.

[00071] In an embodiment, the material of the hollow member may vary for each heat exchanging modules depending on the efficacy of heat transfer required and type of application. Also the hollow member 101, 102 can be preferably positioned horizontally, vertically or inclined with respect to the connector assembly 103 depending on the type of application.

[00072]In an embodiment, the size of the connectors 103 may vary for each heat exchanging modules depending on the desired rate of heat transfer.

[00073] In an embodiment, the connector assembly can be a single rigid construction without any fastening and grooved elements but may include plurality of inlet ports 104, outlet ports 105, and chambers.

[00074] The present invention mainly aims at providing a heat exchanger 100 which effectively exchanges the heat between the fluid flowing in the hollow member and the surrounding space. The heat exchanger 100 achieves the above objective by passing the fluid between pluralities of heat exchanging modules which are connected by unique connector assembly.

[00075] Still another advantage of the present invention is that the above mentioned connector assembly comprises plurality of components to facilitate leak-free connection and to increase the efficiency.

[00076] Yet another advantage of the present invention is that the connector assembly facilitates for effective mixing of fluids inside the built-in chambers thereby maintaining the desired temperature and pressure of the heat exchanging fluid.

[00077] Another advantage of the present invention is that the heat exchanger 100 continuously circulates inlet fluid flowing through connecting hollow member to compensate for the temperature difference of the fluid flowing through the heat exchanging hollow member.

[00078] Another advantage of the present invention is that the heat exchanger 100 can be employed for various applications.

[00079] Still another advantage of the present invention is that the heat exchanger 100 can be employed in different settings including floor-setting, wall-setting, ceiling- setting, inclined-setting etc.

[00080] Another advantage of the present invention is that the heat exchanger 100 can be attached to single or double or multi layered stabilized material which increases the effectiveness of heat transfer.

[00081] Still another advantage of the present invention is that the heat exchanger 100 can be configured to be used as a flexible heat exchanging net or mat which can be rolled, thereby reducing the space whenever heat exchanger is not required

[00082] Yet another advantage of the present invention is that the heat exchanger 100 can be integrated inside gypsum or soft walls to provide efficient heat transfer with the surrounding space. [00083] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.