Abstract: A cold and hot compress pack includes a first sheet (110), a second sheet (120), a third sheet (130), a first weld seam (210), a second weld seam (220), a gas port (310) and at least two liquid ports (320). The first sheet (110), the second sheet (120) and the third sheet (130) are sequentially stacked one above another. The first weld seam (210) joins the first sheet (110), the second sheet (120) and the third sheet (130) at a same planimetric position. The second weld seam (220) surrounds the first sheet (110), the second sheet (120) and the third sheet (130) and joins them together at a same planimetric position. The second weld seam (220) is joined to one end of the first weld seam (210), thereby forming a first cavity (141) between the first sheet (110) and the second sheet (120) and a second cavity (142) between the second sheet (120) and the third sheet (130). The gas port (310) is arranged between any two of the liquid ports (320) so as to be spaced apart from both.

Abstract: The present invention provides a connection device, as well as a connector and heat exchange device, both having the connection device. The connection device includes a plurality of first connectors, a casing, a pressing member and a fastening assembly. The plurality of the first connectors, the pressing member and the fastening assembly are all at least partially housed in the casing, and the pressing member has a pressing portion which is exposed out of the casing. The first connectors are adapted to mate with respective second connectors. The fastening assembly is configured to switch between a ready-to-fasten configuration and a fastening configuration and thereby change connection conditions between the first and second connectors. Firstly, the connection device of the present invention is overall simple in structure and space-saving.

Abstract: A cold compress circulation device and a cold compress circulation system are disclosed. The cold compress circulation device includes a casing, a water reservoir, a cooler, an outlet pipe, a return pipe and an ice box. Both the water reservoir and the cooler are arranged in the casing, and at least part of the ice box is detachably arranged in the water reservoir. Both the outlet pipe and the return pipe are brought into fluidic communication with the water reservoir, and the cooler is arranged on the outlet pipe and/or the return pipe. In this arrangement, the detachable ice box serves as a means for accelerated cooling and can be conveniently replaced by a user. Moreover, the ice box does not lead to an increased amount of water to be circulated or release small ice piece when heated, which may lead to reduced cooling efficiency. Thus, both enhanced cooling efficiency and increased convenience of use are achieved for the user.