Duct system and receiving device

Abstract

A duct system has a first duct guiding warm air downward from a warm air production source provided in an upward position and having warm air-feeding openings in the middle of the first duct, a second duct guiding cold air upward from a cold air production source provided in a downward position and having cold air-feeding openings in the middle of the second duct, and a third duct for connecting the warm air production source and the cold air production source and having recovery openings in the middle of the third duct. The duct system is a simple duct system where warm air and cold air can be independently fed and recovered through the common duct. As a consequence, a receiving device, such as a showcase, that is compact and has high heat exchange efficiency can be provided.

Description

technical field [0001] The present invention relates to a storage device such as a showcase which can refrigerate or heat commodities under different temperature conditions in supermarkets or small unmanned stores. Background technique [0002] As a showcase installed for displaying or displaying commodities in supermarkets and the like, there is known a showcase called an open showcase which forms an air curtain in front of the cabinet and can refrigerate commodities such as beverage cans. In the showcase disclosed in Japanese Patent Laying-Open No. 55-165468, cold air is sprayed downward from the front end of the shelf, and the cold air sprayed from the upper shelf is sucked in from the front end of the lower shelf, thereby Air curtains are formed in each space separated by shelves to maintain an environment suitable for refrigeration in the cabinet. [0003] When displaying or displaying a plurality of products on a showcase, it may be desirable to vary environmental con...

AI Technical Summary

Problems solved by technology

However, the problem with this method is that not only do you need double the supply pipes, but you also need double the recovery pipes

Therefore, if it is desired to supply cold air and hot air separately in order to form regions for cold storage and hot storage in the showcase, the number of ducts will be doubled at once, the volume of the showcase will become larger, and the manufacturing cost will also increase.

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