Patent ID: 7126335

Claim:
A nuclear magnetic resonance measuring apparatus comprising: an NMR probe head equipped with an NMR receiver coil and an irradiation coil; a preamplifier, arranged in said probe head, for amplifying an NMR signal received by said NMR receiver coil; a coil cooling heat exchanger, arranged in said NMR probe head, for exchanging heat between said NMR receiver coil/irradiation coil and a coolant; a preamplifier heat exchanger, arranged inside said NMR probe head, for exchanging heat between said preamplifier and the coolant; a cooling device including a compressor for cooling and compressing the coolant; a first transfer tube for transferring the coolant from said cooling device to said coil cooling heat exchanger in said NMR probe head; a second transfer tube for transferring the coolant from said coil cooling heat exchanger in said NMR probe head to said cooling device; a third transfer tube for transferring the coolant from said cooling device to said preamplifier heat exchanger in said NMR probe head; and a fourth transfer tube for transferring the coolant from said coil cooling heat exchanger in said NMR probe head to said cooling device via said first transfer tube, coil cooling heat exchanger, and second transfer tube.