US 11,939,250 B2
Ion removing system
Tomohiro Akita, Osaka (JP); Yasunari Maeda, Osaka (JP); and Ayane Kihara, Nara (JP)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Appl. No. 16/970,370
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Oct. 19, 2018, PCT No. PCT/JP2018/039026
§ 371(c)(1), (2) Date Aug. 16, 2020,
PCT Pub. No. WO2019/167335, PCT Pub. Date Sep. 6, 2019.
Claims priority of application No. 2018-034526 (JP), filed on Feb. 28, 2018; application No. 2018-034527 (JP), filed on Feb. 28, 2018; application No. 2018-034533 (JP), filed on Feb. 28, 2018; and application No. 2018-034538 (JP), filed on Feb. 28, 2018.
Prior Publication US 2020/0407254 A1, Dec. 31, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 5/08 (2023.01); B04C 5/12 (2006.01); C02F 1/42 (2023.01); C02F 101/10 (2006.01)
CPC C02F 5/08 (2013.01) [B04C 5/12 (2013.01); C02F 1/42 (2013.01); C02F 2101/10 (2013.01); C02F 2201/002 (2013.01); C02F 2303/22 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An ion removing system comprising:
an ion removing apparatus that comprises a hard water storage part for storing hard water and a fine bubble generator for generating and supplying fine bubbles provided by an ion removal gas, each bubble having a diameter of 100 μm or less, in a proportion of 90% or more to the hard water storage part and wherein the ion removing apparatus causes the fine bubbles to adsorb and thereby remove a plurality of metal ions in the hard water,
a primary-side flow path connected to the ion removing apparatus to supply the hard water to the ion removing apparatus,
a separating apparatus including a separating part having an inner circumferential surface and a crystal storage part, the separating part connected to the ion removing apparatus by a connection flow path disposed on an upper outer circumferential portion of the hard water storage part, the separating part for separating at least some of a plurality of crystals of a metal component deposited by crystallizing at least some of the plurality of metal ions removed from the hard water by the ion removing apparatus, wherein:
the connection flow path is connected to the separating part such that the hard water having passed through the ion removing apparatus is discharged in an eccentric arrangement relative to a central axis of the separating apparatus, and
the crystal storage part is disposed below the separating part, the crystal storage part including a discharge flow path for discharging the hard water containing the plurality of crystals of the metal component, the discharge flow path provided with an opening/closing valve capable of opening and closing the discharge flow path, and
a discharge-side backflow prevention mechanism is disposed on the discharge flow path downstream of the opening/closing valve in a discharge direction and is configured to prevent backflow by a spout space disposed at an outlet of the discharge flow path, and
a secondary-side flow path connected to the separating apparatus to take out, from the separating apparatus, treated water obtained by separating the plurality of crystals, a return flow path connected to the separating apparatus and the primary-side flow path to return a portion of the treated water to the primary-side flow path, wherein
the primary-side flow path is provided with at least a supply-side check valve.