Space purification device

Patent metadata

Field	Value
Publication number	US-2025121112-A1
Application number	US-202218728511-A
Country	US
Kind code	A1
Filing date	Dec 6, 2022
Priority date	Jan 28, 2022
Publication date	Apr 17, 2025
Grant date	—

Abstract

A space purification device according to the present disclosure includes: electrolysis bath; water supply unit; electrode unit (140); first calculator (510) that calculates an increased concentration of hypochlorous acid water per unit time based on (i) a first sodium chloride concentration that is a sodium chloride concentration in the electrolysis bath after the sodium chloride concentration has changed due to an input of the electrolysis accelerator into the electrolysis bath and (ii) hypochlorous acid generation efficiency per unit time set in advance; second calculator (512) that calculates, based on a target hypochlorous acid water concentration in the electrolysis bath, a first hypochlorous acid water concentration that is a hypochlorous acid water concentration in the electrolysis bath before energization by electrode unit (140), and the increased concentration of hypochlorous acid water per unit time calculated by first calculator (510), a required energization time for achieving the target hypochlorous acid water concentration; and electrode controller (540) that performs energization in electrode unit (140) for the required energization time calculated by second calculator (512).

First claim

1 . A space purification device comprising:
an electrolysis bath that mixes an electrolysis accelerator and water; a water supply unit that supplies the water to the electrolysis bath; an electrode unit that generates hypochlorous acid water from the electrolysis accelerator and the water mixed in the electrolysis bath; a first calculator that calculates an increased concentration of hypochlorous acid water per unit time based on (i) a first sodium chloride concentration that is a sodium chloride concentration in the electrolysis bath after the sodium chloride concentration has changed due to an input of the electrolysis accelerator into the electrolysis bath and (ii) hypochlorous acid generation efficiency per unit time set in advance; a second calculator that calculates, based on a target hypochlorous acid water concentration in the electrolysis bath, a first hypochlorous acid water concentration that is a hypochlorous acid water concentration in the electrolysis bath before energization by the electrode unit, and the increased concentration of hypochlorous acid water per unit time calculated by the first calculator, a required energization time for achieving the target hypochlorous acid water concentration; and an electrode controller that performs energization in the electrode unit for the required energization time calculated by the second calculator.

2 . The space purification device according to claim 1 , further comprising a third calculator that calculates a second sodium chloride concentration that is the sodium chloride concentration in the electrolysis bath after the energization by the electrode unit based on the first sodium chloride concentration, the increased concentration of hypochlorous acid water per unit time, and the required energization time.

3 . The space purification device according to claim 2 , further comprising:
a purification bath that stores the hypochlorous acid water generated in the electrolysis bath; an electrolytic water supply unit that supplies the hypochlorous acid water from the electrolysis bath to the purification bath; and a purification unit that purifies a space using the hypochlorous acid water stored in the purification bath.

4 . The space purification device according to claim 3 , further comprising:
an electrolytic water supply controller that supplies electrolytic water to the purification bath by the electrolytic water supply unit; a fourth calculator that calculates an amount of supplied electrolytic water by the electrolytic water supply unit; and a fifth calculator that calculates a third sodium chloride concentration that is the sodium chloride concentration in the electrolysis bath after a supply of the electrolytic water by the electrolytic water supply unit based on the second sodium chloride concentration calculated by the third calculator, the amount of supplied electrolytic water calculated by the fourth calculator, and a capacity of the electrolysis bath.

5 . The space purification device according to claim 4 , further comprising a sixth calculator that calculates a second hypochlorous acid water concentration that is the hypochlorous acid water concentration in the electrolysis bath after the supply of the electrolytic water by the electrolytic water supply unit based on the target hypochlorous acid water concentration, the amount of supplied electrolytic water, and the capacity of the electrolysis bath.

6 . The space purification device according to claim 5 , further comprising a first change unit that changes the first sodium chloride concentration to the third sodium chloride concentration calculated by the fifth calculator and changes the first hypochlorous acid water concentration to the second hypochlorous acid water concentration calculated by the sixth calculator,
wherein the first calculator calculates a new increased concentration of hypochlorous acid water per unit time based on (i) a new first sodium chloride concentration changed by the first change unit and (ii) the hypochlorous acid generation efficiency per unit time set in advance, the second calculator calculates a new required energization time by the electrode unit based on the target hypochlorous acid water concentration in the electrolysis bath, a new first hypochlorous acid water concentration changed by the first change unit, and the new increased concentration of hypochlorous acid water per unit time calculated by the first calculator, and the electrode controller is configured to perform energization in the electrode unit for the new required energization time calculated by the second calculator.

7 . The space purification device according to claim 6 , wherein the space purification device is configured to repeat the change of the first sodium chloride concentration and the change of the first hypochlorous acid water concentration by the first change unit, the calculation of the new increased concentration of hypochlorous acid water per unit time by the first calculator, the calculation of the new required energization time by the second calculator, and the control of energization for the new required energization time by the electrode controller.

8 . The space purification device according to claim 2 , further comprising a purification unit that purifies a space using the hypochlorous acid water in the electrolysis bath.

9 . The space purification device according to claim 8 , further comprising:
a seventh calculator that calculates a hypochlorous acid decrease amount decreased from the electrolysis bath due to the purification by the purification unit; and an eighth calculator that calculates a third hypochlorous acid water concentration that is the hypochlorous acid water concentration in the electrolysis bath after decrease of hypochlorous acid by the purification based on the target hypochlorous acid water concentration and the hypochlorous acid decrease amount calculated by the seventh calculator.

10 . The space purification device according to claim 9 , further comprising a second change unit that changes the first sodium chloride concentration to the second sodium chloride concentration calculated by the third calculator and changes the first hypochlorous acid water concentration to the third hypochlorous acid water concentration calculated by the eighth calculator,
wherein the first calculator calculates a new increased concentration of hypochlorous acid water per unit time based on (i) a new first sodium chloride concentration changed by the second change unit and (ii) the hypochlorous acid generation efficiency per unit time set in advance, the second calculator calculates a new required energization time by the electrode unit based on the target hypochlorous acid water concentration in the electrolysis bath, a new first hypochlorous acid water concentration changed by the second change unit, and the new increased concentration of hypochlorous acid water per unit time calculated by the first calculator, and the electrode controller is configured to perform energization in the electrode unit for the new required energization time calculated by the second calculator.

11 . The space purification device according to claim 10 , wherein the space purification device is configured to repeat the change of the first sodium chloride concentration and the change of the first hypochlorous acid water concentration by the second change unit, the calculation of the new increased concentration of hypochlorous acid water per unit time by the first calculator, the calculation of the new required energization time by the second calculator, and the control of energization for the new required energization time by the electrode controller.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Oono Toshikazu
• Miyazawa Yasumi
• Okabe Shunichiro
• Matsumoto Kazuma
• Asai Fumiaki

Classifications

• C02F1/46

  by electrochemical methods · CPC title

• C02F2209/29

  Chlorine compounds · CPC title

• C02F2201/4615

  Time · CPC title

• A61L2209/11

  Apparatus for controlling air treatment · CPC title

• C02F2201/46125

  Electrical variables · CPC title