Vacuum jacketed insulation structure for food grade pressure vessels and method of manufacture

By employing thermal insulation support components and vacuum maintenance components in food-grade pressure vessels, the problems of thermal bridging and vacuum decay are solved, resulting in more uniform insulation and long-term vacuum maintenance, thus improving the overall insulation performance of food-grade pressure vessels.

CN122426470APending Publication Date: 2026-07-21ZHANGJUN MECHANICAL EQUIP (TAIZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHANGJUN MECHANICAL EQUIP (TAIZHOU) CO LTD
Filing Date
2026-06-11
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing vacuum jacket structures for food-grade pressure vessels, thermal bridges are easily formed in the support structure, and the vacuum level of the vacuum jacket cavity decreases after long-term use, resulting in uneven and reduced heat preservation performance.

Method used

By employing thermal insulation support components with offset support arms and perforated designs, combined with valve island components and vacuum maintenance components, a non-linear thermal bridge path and a long-term vacuum maintenance system are formed, reducing the thermal bridge effect and extending the vacuum level.

Benefits of technology

It improves the heat insulation uniformity of food-grade pressure vessels and the long-term heat insulation effect of the vacuum jacket cavity, reduces heat transfer and vacuum decay, and enhances the compactness and heat insulation stability of the top structure.

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Abstract

The present application relates to the technical field of food-grade pressure vessels, and particularly relates to a vacuum jacket insulation structure of a food-grade pressure vessel and a manufacturing method thereof, which comprises a storage tank, an inner container, a vacuum jacket cavity, a heat insulation support assembly, a valve island assembly, a vacuum maintenance assembly and a low-radiation reflective layer. The inner container is arranged in the storage tank, and the vacuum jacket cavity is formed between the storage tank and the inner container. The heat insulation support assembly is connected to the storage tank and the inner container in a staggered and oblique manner, and is provided with a heat insulation part and a hollow hole, so as to reduce the heat bridge at the support part while maintaining the stable support of the inner container. The valve island assembly is arranged at the top of the storage tank, and forms a neck vacuum extension cavity in communication with the vacuum jacket cavity through an outer neck support cover, so as to reduce the heat bridge at the top interface area. The vacuum maintenance assembly is in communication with the vacuum jacket cavity, and continuously adsorbs water vapor and residual gas through a drying agent area and an adsorption area. Compared with the prior art, the present application can improve the uniformity of heat preservation, the vacuum maintenance capability and the long-term use stability of the pressure vessel.
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Citation Information

Patent Citations

  • A vacuum insulation tank

    CN112744471B