KR960706055A - Evaporator - Google Patents

Abstract

The present invention relates to an evaporator for a compressor refrigeration unit, comprising an inner and an outer metal plate (5, 6) surrounding a refrigeration duct (8) of a winding shape on the wall of the evaporator. The evaporator is particularly protected from the leakage of coolant by a separate inner wall plate 7 and an optional separate outer wall plate 15. All elements of the evaporator wall, namely the inner wall plate 7, the inner metal plate 5, the outer metal plate 6 and the optional outer wall plate 15 are welded or soldered to each other.

Description

Evaporator

Since this is an open matter, no full text was included.

1 is a diagram of an evaporator of a compressor refrigeration unit, FIG. 2 is a sectional view of the evaporator wall, FIG. 3 is a plan view of the evaporator wall, and FIG. 4 is a sectional perspective view of the evaporator wall.

Claims (10)

It surrounds the refrigerating compartment of the reciprocating refrigerating unit operating with hydrocarbon as a coolant and is surrounded on the outside by a thermal insulation layer, provided between two metal plates of the evaporator wall, ie the inner and outer metal plates, with a coolant inlet and coolant outlet. An evaporator having a curved coolant duct, the two metal plates being next to and between the coolant duct portions and having a fixed metal connection in the form of a weld or solder, between the sides of the refrigerating compartment 4. A separate inner wall plate 7 is provided having a metal surface which forms the inner wall of the evaporator wall and is in contact with the inner metal plate 5, and is brazed or brazed in the surface contact area between the inner wall plate 7 and the inner metal plate 5. Evaporator characterized in that a connection surface (13) formed by welding is provided. 2. Evaporator according to claim 1, characterized in that the connecting surface (13) between the inner wall plate (7) and the inner metal plate (5) is limited to the surface portion by bands or isolated shapes distributed over the evaporator wall. Evaporator according to claim 2, characterized in that a thin separating layer (14) is provided between the inner wall plate (7) and the inner metal plate (5) between adjacent connecting surfaces (13, 13a). 4. The separating layer (14) according to claim 3, characterized in that the separating layer (14) has a serpentine-shaped path that corresponds to the serpentine-shaped path of the coolant duct (8), but the layer is wider than the coolant duct. evaporator. A separate outer wall plate (15) according to any one of the preceding claims, which forms an outer wall of the evaporator wall (2) on the side of the insulating layer and has a metal surface contact with the outer metal plate (6). And a connecting surface (17) formed by soldering or welding in the surface contact area between the outer wall plate (15) and the outer metal plate (6). 6. Evaporator according to claim 5, characterized in that the outer connecting surface (17) between the outer wall plate (15) and the outer metal plate (6) is limited to a band or isolated surface portion distributed over the evaporator wall (2). 7. Evaporator according to claim 6, characterized in that between the adjacent outer connecting surfaces (17), each thin separating outer layer (16) is provided between the outer wall plate (15) and the outer metal plate (6). 8. The evaporator of claim 7, wherein the separating outer layer (16) has a serpentine-shaped path that corresponds to the serpentine-shaped path of the coolant duct (8), each wider than the coolant duct. 9. The evaporator according to any one of claims 1 to 8, wherein the fixed metal connection between the inner metal plate and the outer metal plate is made by roll welding according to the roll joining method, and the coolant duct is formed in the unwelded zone prior to the formation of the evaporator. In an evaporator produced by expansion, the connecting surfaces 13 and 13a between the inner wall plate 7 and the inner metal plate 5 are produced at once by roll welding of the inner and outer metal plates 5 and 6. evaporator. 10. Evaporator according to claim 9, characterized in that the connecting surfaces (13, 13a) between the outer wall plate (15) and the outer metal plate (6) are produced at once by roll welding of the inner and outer metal plates (5,6). ※ Note: The disclosure is based on the initial application.