PURPOSE: To extent the life of a bearing, by cooling or heating it by a cooling unit utilizing Pertier effect, and holding a temperature of a conductive liquid at a set temperature without being influenced by the variation of an ambient temperature.
CONSTITUTION: A radiator plate contacting with one side of a cooling uit 15 having a Pertier effect is made to correspond to a cooling fan 20. On the other hand, a heat transmitting body 18 is fitted so as to contact with a conductive liquid circulating in an outside ball 2, through a metallic heat transmitting capacitor 17. By a temperature control device A constituted in this way, a temperature of the conductive liquid is detected by a temperature detecting sensor 10, and in case when a liquid temperature is shifted from a set temperature, the conductive liquid is always held at a set temperature by operating the cooling unit 15.
MINOHARA KIYOMI
TAMAOKA MASUMI
