# US 12,595,929 B2 · Air-conditioning system

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- Number: US 12,595,929 B2
- Document ID: US12595929B2
- Status: Granted
- Kind: B2
- Application number: 18/683,223
- Filed: 2022-05-16
- Published: 2025-05-01
- Granted: 2026-04-07
- Earliest claimed: 2021-08-27
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: Keito Ito; Junya Kobayashi; Ryosuke Nagata; Masahiro Shigemori
- Web page: https://patentgrep.com/patent/US12595929B2

## CPC

- F24F 11/80: for controlling the temperature of the supplied air
- F24F 3/00: Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems (room units F24F1/00)
- F24F 7/06: with forced air circulation, e.g. by fan {positioning of a ventilator in or against a conduit}
- F24F 7/10: with air supply, or exhaust, through perforated wall, floor or ceiling (outlet members for directing or distributing air {into rooms or spaces, e.g. ceiling air-diffusers} F24F13/06)
- F24F 11/46: Improving electric energy efficiency or saving
- F24F 11/61: using timers
- F24F 11/70: Control systems characterised by their outputs; Constructional details thereof
- F24F 11/89: Arrangement or mounting of control or safety devices
- F24F 2110/10: Temperature
- F24F 2140/00: Control inputs relating to system states
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)

## Abstract

An air-conditioning system of the present disclosure includes air-conditioning unit (1) that supplies air-conditioned air to a plurality of air-conditioned spaces, unit body (2) that forms an outline of air-conditioning unit (1), air-conditioner (3) that performs temperature control of air taken into unit body (2), one or more air blowers (4) that blow, to an outside of unit body (2), air having been blown out from air-conditioner (3), and a controller that controls air-conditioner (3). Then, the controller (i) determines an air-conditioner set temperature such that an air-conditioner temperature difference, which is a temperature difference between an inlet temperature, which is a temperature of air suctioned by air-conditioner (3), and the air-conditioner set temperature set to air-conditioner (3), has a larger value than an air-conditioning stopping determination temperature difference, and (ii) causes air-conditioner (3) to perform an air-conditioning operation with the air-conditioner set temperature having been determined.

## Claims

### Claim 1

An air-conditioning system comprising:
an air-conditioning unit that supplies air-conditioned air to a plurality of spaces;
a unit body that forms an outline of the air-conditioning unit;
an air-conditioner that performs temperature control of air taken into the unit body;
one or more air blowers that blow, to an outside of the unit body, air having been blown out from the air-conditioner; and
a controller that controls the air-conditioner,
wherein the controller (i) determines an air-conditioner set temperature to cause an air-conditioner temperature difference, which is a temperature difference between an inlet temperature, which is a temperature of air suctioned by the air-conditioner, and the air-conditioner set temperature set to the air-conditioner, to have a larger value than an air-conditioning stopping determination temperature difference that defines a temperature difference at which an air-conditioning operation is stopped, and (ii) causes the air-conditioner to perform an air-conditioning operation with the air-conditioner set temperature having been determined, and
wherein the controller (i) determines an air-conditioning requirement amount for each of the plurality of spaces based on a temperature difference between a temperature of the space and an indoor set temperature set for the space, and (ii) causes the air-conditioner to stop the air-conditioning operation when all of a first condition in which the air-conditioning requirement amount having been determined becomes less than or equal to a first reference temperature in all of the spaces, a second condition in which the air-conditioning requirement amount having been determined becomes less than or equal to a second reference temperature in at least one of the spaces, and a third condition in which an air-conditioning operating time of the air-conditioner becomes greater than or equal to a predetermined time in a state where a mean value of the air-conditioning requirement amounts having been determined becomes less than or equal to a third reference temperature are satisfied.

### Claim 2 (depends on 1)

The air-conditioning system according to claim 1, wherein the controller causes the air-conditioner to start the air-conditioning operation in a case where the air-conditioning requirement amount becomes larger than a fourth reference temperature in at least one of the spaces while the air-conditioner is stopping air-conditioning operation.