Heat exchange device and freeze dryer
AssigneeShenzhen Biteman Technology Co., Ltd.
InventorYing Hui Guo
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Abstract
A heat exchange device and a freeze dryer. The freeze dryer comprises a bearing device, and an evaporation device and a condensation device which are provided on the bearing device, at least one of the evaporation device and the condensation device comprising a structure of the heat exchange device. The heat exchange device is integrally molded by extrusion, and the heat exchange device is provided with at least one medium flow passage, a plurality of fins are formed on the outer periphery of the medium flow passage, and the fins being provided at intervals to form gaps allowing airflows to pass therethrough. The heat exchange device and the freeze dryer of the present disclosure can be designed to be smaller, reducing the volume, and facilitating miniaturization of products.
Claims19
A heat exchange device, comprising:
- a plurality of medium flow passages;
- a plurality of fins formed on the outer periphery of the medium flow passages, and arranged at intervals to form gaps allowing airflows to pass through, wherein all fins extend radially around a single center of the heat exchange device, each fin is located on a radial line radiating directly from the same single center of the heat exchange device, and an extending direction of each fin is a direction of radiating directly outward from the single center of the heat exchange device, wherein the single center is a geometric center of the heat exchange device;
- and
- a housing, in which the medium tube and the fins are placed;
- wherein fins extending from an outer surface of the medium flow passage at the center of the heat exchange device to the housing are arranged between any two adjacent media medium flow passages on a same circumference;
- wherein the housing is integrally molded by extrusion with all the fins;
- wherein the heat exchange device is integrally molded by extrusion to be a single piece.
A freeze dryer, comprising:
- a bearing base body comprising an upper airflow chamber located at the upper end of the bearing base body and a lower airflow chamber located at the lower end of the bearing base body;
- an evaporation device communicated with the upper airflow chamber and the lower airflow chamber, wherein the evaporation device cools and dries gas by evaporating refrigerated medium;
- a condensation device arranged between the upper end and the lower end of the bearing base body, wherein the condensation device is configured to cool the medium;
- a refrigerant compressor;
- a refrigerant filter;
- a throttling device;
- wherein the refrigerant compressor, the refrigerant filter and the throttling device are all arranged on a side area of the bearing base body;
- wherein the vaporized refrigerated medium flows through the refrigerant compressor, the condensation device the refrigerant filter and the throttling device in turn to be cooled to a low-temperature and low-pressure liquid refrigerant;
- wherein at least one of the evaporation device and the condensation device comprises a heat exchange device, which is integrally molded by extrusion to be a single piece, comprising:
- a plurality of medium flow passages;
- a plurality of fins formed on the outer periphery of the medium flow passage, and arranged at intervals to form gaps allowing airflows to pass through, wherein all fins extend radially around a single center of the heat exchange device, each fin is located on a radial line radiating directly from the same single center of the heat exchange device, and an extending direction of each fin is a direction of radiating directly outward from the single center of the heat exchange device, wherein the single center is a geometric center of the heat exchange device;
- and
- a housing, in which the medium tube and the fins are placed in;
- wherein fins extending from an outer surface of the medium flow passage at the center of the heat exchange device to the housing are arranged between any two adjacent media medium flow passages on a same circumference;
- wherein the housing is integrally molded by extrusion with all the fins.
Dependencies are inferred from the claim text.