US 11,951,437 B2
Inside air control system, refrigeration apparatus, and transport container
Makoto Ikemiya, Osaka (JP); Kouji Yamamoto, Osaka (JP); and Noritaka Kamei, Osaka (JP)
Assigned to Daikin Industries, Ltd., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Oct. 19, 2023, as Appl. No. 18/381,812.
Application 18/381,812 is a continuation of application No. PCT/JP2022/010828, filed on Mar. 11, 2022.
Claims priority of application No. 2021-070968 (JP), filed on Apr. 20, 2021.
Prior Publication US 2024/0042372 A1, Feb. 8, 2024
Int. Cl. B01D 53/047 (2006.01); A23B 7/148 (2006.01); B01D 53/26 (2006.01); B65D 81/26 (2006.01); B65D 85/50 (2006.01); B65D 85/52 (2006.01); F25D 17/04 (2006.01)
CPC B01D 53/047 (2013.01) [A23B 7/148 (2013.01); B01D 53/261 (2013.01); B65D 81/266 (2013.01); B65D 85/505 (2013.01); B65D 85/52 (2013.01); F25D 17/042 (2013.01); B01D 2253/108 (2013.01); B01D 2257/102 (2013.01); B01D 2257/80 (2013.01); B01D 2258/06 (2013.01); B01D 2259/40003 (2013.01); B01D 2259/40009 (2013.01); B01D 2259/402 (2013.01); F25D 2317/0411 (2013.01); F25D 2317/0413 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An inside air control system for performing an adjustment operation of adjusting a composition of inside air in a storage, comprising:
a first adsorption vessel and a second adsorption vessel each having an adsorbent for adsorbing nitrogen and water;
a first pump configured to supply treatment target air to the first adsorption vessel and the second adsorption vessel;
a second pump which is an oilless pump configured to suck gas from the first adsorption vessel and the second adsorption vessel and supply the gas into the storage;
a switching mechanism configured to switch a flow path of the treatment target air discharged by the first pump and a flow path of the gas sucked into the second pump; and
a controller configured to control the first pump, the second pump, and the switching mechanism,
wherein, in the adjustment operation, the controller is configured to control the switching mechanism to alternately perform a first action in which the first pump supplies the treatment target air to the first adsorption vessel and the second pump sucks the gas from the second adsorption vessel and a second action in which the first pump supplies the treatment target air to the second adsorption vessel and the second pump sucks the gas from the first adsorption vessel, and
is further configured to, when a stop condition for stopping the adjustment operation is satisfied, the controller control the switching mechanism such that the second pump sucks the gas from one of the first adsorption vessel or the second adsorption vessel, to which the first pump supplies the treatment target air, when the stop condition is satisfied, and perform stop control for stopping the second pump after having operated the second pump for a predetermined first time.