Expandable combined heating and heat preservation device and heat preservation meal package

• Main Authors: QIU KUNLIANG, ZHUANG MINGZAN, XIA GUANGXIN
• Format: Patent
• Language: Chinese; English
• Published: 03.07.2020
• Subjects: BLASTING; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HAND CARRIED BAGS; HAND OR TRAVELLING ARTICLES; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; HUMAN NECESSITIES; LIGHTING; LUGGAGE; MECHANICAL ENGINEERING; PURSES; RANGES; VENTILATING; WEAPONS

The invention discloses an expandable combined heating and heat preservation device and a heat preservation meal package. The expandable combined heating and heat preservation device is suitable for the meal package and comprises a first heat preservation piece, wherein the first heat preservation p...