Mainly oil pump capacity can be effectively increased by providing one kind for this creation, and can effectively control the cold pressing expeller of press chamber temperature. The cold pressing expeller ties up to each groove squeezed at inner face equipped with an at least predetermined depth of its press chamber, and, an at least heat exchange cylinder is coated in the periphery of whole press chamber. In order to the effect of rolling to crude oil seed can be increased, so as to effectively increase the oil pump capacity of oil pump capacity entirety cold pressing expeller under the groove binding for squeezing item； And be able under this at least effect of a heat exchange cylinder, accelerate the waste heat discharge effect of press chamber, and then can effectively control press chamber temperature, the nutrient of crude oil seed is avoided to go to pot, be lost.本創作主要提供一種可以有效增加出油量，以及能夠有效掌控榨膛溫度之冷榨機。所述冷榨機係在其榨膛之各榨內面處設有至少一預定深度的溝槽，以及，在整體榨膛之外圍包覆有至少一熱交換筒。俾可在榨條之溝槽作用下，增加對原油籽之碾壓作用，使得以有效增加出油量整體冷榨機之出油量；以及，得以在該至少一熱交換筒之作用下，加速榨膛之廢熱排放效果，進而能夠有效掌控榨膛溫度，避免原油籽之養份遭破壞、流失。
