TH371A - Corrugated fin evaporator of an air conditioner used in cars - Google Patents

Abstract

Evaporators that use refrigerant in the cooling cycle, especially those used with air conditioners used in cars. Consists of a flat hose with a passageway for the refrigerant inside the hose And has a design to curve up and down And there are a number of corrugated fin units, each of which is inserted between the adjacent vertical sections. And fixed on such flat pipe To facilitate the transfer of heat between the refrigerant flowing in the flat duct and the air moving along the level between the vertical sections of the flat duct for the evaporator, this prevents condensation from condensing. Water droplets are caught on a flat tube surface area. And on the unit, the corrugated fins were blown into the passenger compartment inside the car. By the flat ducts that are part on the destination side of the air flow away from Each corrugated fin unit So that there is no contact space between the flat pipes. And a corrugated fin unit in order to allow condensed water to drip through a non-contact space.

Claims (4)

1. Evaporators use the refrigerant in a refrigerant cycle consisting of a pipe with a refrigerant path in the pipe. And designed to curve up and down And arranged in a set part to create a gap along the level for the air to be made Let the cool flow through And there are a number of corrugated fin units Where each is installed between the adjacent vertical sections of the flat tube in such a way that the folds of the corrugated fin unit protrude along the level and come into contact with the flattened section of the tube. Vertically, where between the aforementioned flattened tube and each folded section of the corrugated fin unit there is a contactless space of 3 to 10 mm in length extending from the end edge to the source side of Such corrugated fin unit relative to the air flow direction. 2. The evaporator uses the refrigerant specified in Clause 1. The tubes are flat and thin, the corrugated fins are coated with a first coating to prevent corrosion and a second coating for better wetting of the surface area. 3. The evaporator uses the refrigerant as described in claim 2, where the first coating consists of chromophosphate and the second coating consists of aluminum silicate. 4. The evaporator uses the refrigerant described in claim 1 or 2 or 3, with a non-contact void by making the edges of the tubes flattened, tapered, or bent towards the destination side of the flow. The air has a triangular cross-sectional area (4 claims, 3 drawings).