Sample collector and components thereof
To provide a protective coat on a refrigerated sample collector for a corrosive environment a unitary frame includes a support unit with condenser and evaporator coils mounted to the support unit and an orifice connecting the condenser and evaporator coils. The evaporator coils, condenser coils and restrictor are powder coated after being connected, whereby an effective seal is provided for the restrictor, condenser coils and evaporator coils after they are assembled to the support. The unitary frame can be easily removed or connected as a unit to the sample collector. A peristaltic pump may be used for drawing at least one sample into the refrigerated sample collector and depositing said sample into at least one sample bottle. The peristaltic pump may include contoured tube guides to reduce movement of the peristaltic pump as a roller paddle rotates.
1. A method of fabricating a unitary structure, comprising the steps of:
assembling condenser coils, evaporator coils, a restrictor and support members on a unitary frame;
powder coating the unitary frame with the condenser coils, the evaporator coils, the restrictor and the support members on it;
mounting a compressor on the unitary frame and connecting the condenser coils and the evaporator coils to the compressor;
sealing the connections between the compressor and the evaporator coils and the condenser coils; and
mounting the uniform frame to an apparatus to provide a final closure.
2. The method of claim 1 in which the step of assembling condenser coils, evaporator coils, a restrictor and support members comprises the step of mounting one of an orifice restrictor and a capillary restrictor between the evaporator coils and the condenser coils.
3. The method of claim 2 in which the step of assembling the condenser coils, evaporator coils, restrictor and support members includes the steps of:
mounting a compressor having a special protective coat on it to the unitary frame and connecting the compressor to the evaporator and condenser coils; and
sealing the connections between the compressor and the evaporator and condenser coils with a special protective coat.