Special spiral-curved refrigerant coil for a non cooling-fin condenser of an air conditioning system

Abstract

A spiral-curved refrigerant coil set of a refrigerant condenser, especially a coil set which each coil winded of a streamlined cross-sectioned metal tube used in a non cooling-fin outdoor condenser apparatus for a separating air conditioning system. The purpose of using spiral-curved refrigerant coil is to save a plurality of U-turn connectors which eliminate a plurality of welding seams for U-turn connectors to promises no leakage thereat, and therefore reduce of the labor, and manufacturing costs. More particularly avoid the gradualness of “pressure drop” which occurs while the refrigerant passing through each U-turn connector due to friction so as to increase the E.E.R value therefore.

Description

FIELD OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a refrigerant coil of a non cooling-fin condenser; especially relates to a spiral curved refrigerant coil for a condenser. [0003] 2. Description of the Related Art [0004] The conventional refrigerant coil for a condenser, no matter what it uses, the circular or ellipse-cross-sectional metal tube, water-cooled or air-cooled method, both use the same architecture. FIG. 1 illustrating a connectional refrigerant coil 70, the cooling-fins 80 are passed through by straight-tubes toward the same and parallel direction, both sides are fixed on two relative separate supporting-frames 82, then applying a plurality of U-turn connectors 74, respectively weld to two ports of adjacent straight-tubes 72, then connecting all refrigerant coil to constitute a cuboid-reciprocating refrigerant coil set 70. No doubt, the above architecture is a conventional air conditioning system. Even if non cooling-fins ev...

AI Technical Summary

Benefits of technology

[0006] Owing to accumulated working experience of the non cooling-fins evaporative condenser with streamlined-cross-sectional tube, the present invention is made in the light of providing solutions to the above-described problems. Accordingly, an object of the present invention is to omit the defect of U-turn connectors for straight-reciprocating coil, and to save a plurality of U-turn connectors so as to increase the EER value.

[0013] In order to improve the effect, the refrigerant coil set of multi-layer spiral-curved refrigerant coils comprises a plurality of odd-layer refrigerant coils and a plurality of even-layer refrigerant coils which are overlapped and intermeshed each others with a space between each refrigerant coil, therefore providing sufficient wind power blowing over the surface of each refrigerant coil, among the multi-layer winding spiral-curved refrigerant coils, wherein the inlet manifold port of gas-phase refrigerant for odd-layer refrigerant coil located on an outside of the refrigerant coils, and a liquid refrigerant collecting tube for the odd-layer refrigerant coil located at an inside opposite to the manifold tube to connect the odd lager refrigerant coils in a parallel connection. The liquid-phase refrigerant is sucked into collection the tube. The inlet manifold and the liquid refrigerant collecting tube of even-layer and refrigerant coils are located in the opposite symmetrical position to those of odd-layer refrigerant coils.

[0014] 2. As described above, a refrigerant coil supporting-frame includes a base rank which has an outer-ring and an inner-ring disposed in parallel having four beams connect two rings together into four quadrants; four outer-props of channel iron with a narrow slot separately mounted on the outer-junction where outer-ring and four beams welded together, wherein its narrow slot is toward inside; a plurality of outer-hoops weld-mounted on outer edge of four outer-props with suitable spacing; four inner-props of channel iron with narrow slot, separately mounted on the inner junction of inner-ring and four beams with the narrow slot is toward outside. The slot of inner-prop and outer-prop, which set on an opposite position to formed a slide way there between; a plurality of inner-hoops welded on inner edge of four inner-props, wherein inner-hoops and the outer-hoops set within a definite space; a plurality of arc-reinforce-strips separately weld-mounted between every two outer-hoops and every two inner-hoops to strengthen the whole supporting-frame for steadiness.

[0023] A spiral-curved refrigerant coil of a refrigerant condenser, especially relates to a non cooling-fin outdoor condenser apparatus for a separating air conditioning system which uses streamlined-cross-sectional tubes for winding spiral-curved refrigerant coil to save a plurality of U-turn connectors; to eliminate a plurality of welding work for U-turn connectors, and therefore reduce of the labor, and manufacturing costs, also thoroughly avoids a leakage of refrigerant at welding seam, and more particularly to avoid the “pressure drop” which occurs while the refrigerant passing through each U-turn connector due to friction so as to increase the E.E.R value therefore.

[0026] The present invention relates to a spiral-curved refrigerant coil of refrigerant condenser in order to eliminate a plurality of welded seams of joints for U-turn connectors, also thoroughly avoid the leakage of refrigerant thereat.

[0027] The present invention relates to a spiral-curved refrigerant coil of a refrigerant condenser; reduce of the labor, and manufacturing costs.

Problems solved by technology

As a matter of fact, a great number of U-turn connectors cause too many problems, wherein the main reason is, that the refrigerant fluid passing through each U-turn connector, the increasing friction causes the “pressure drop”; thus greatly increasing the load for refrigerant to liquefy which cause E.E.R. to fall.

Secondly, a plurality of welded joints froming U-turn connectors causes some weak points.

This kind of weak point can't find any slight defects in a test phase, but it may cause a leakage of refrigerant after a period of time for using due to either vibrates or corrodes.

Another more serious problem is that it is difficult to remove dirt of small particle sediments which accumulated between crevices of fins and the surface of refrigerant coil.

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