Air-conditioning system and air-conditioning system controller

Patent metadata

Field	Value
Publication number	US-11353233-B2
Application number	US-201816766238-A
Country	US
Kind code	B2
Filing date	Nov 15, 2018
Priority date	Nov 28, 2017
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

This air-conditioning system includes an air conditioner: a room temperature sensor; an air-conditioning room temperature sensor; and a system controller. In the system controller, a room target temperature obtainer obtains a plurality of room target temperatures. Moreover, a ventilation airflow determiner determines the ventilation airflow of each of the delivery fans on the basis of the room target temperature, the temperature in the corresponding room, and the temperature in the air-conditioning room, and a fan airflow controller controls the ventilation airflow of each of the delivery fans according to the ventilation airflow determined by the ventilation airflow determiner.

First claim

The invention claimed is:

1. An air-conditioning system, comprising:
an air conditioner which is installed in an air-conditioning room and conditions air in the air-conditioning room;
a plurality of delivery fans which are installed for a plurality of rooms in one-to-one correspondence and deliver the air in the air-conditioning room into the plurality of rooms, the plurality of rooms being independent of the air-conditioning room;
a system controller which controls the air conditioner and the plurality of delivery fans;
a room temperature sensor which obtains a temperature in each of the plurality of rooms and transmits the temperature in each of the plurality of rooms to the system controller; and
an air-conditioning room temperature sensor which obtains a temperature in the air-conditioning room and transmits the temperature in the air-conditioning room to the system controller, wherein
the system controller includes:
a room target temperature obtainer which obtains a plurality of room target temperatures set for the plurality of rooms in one-to-one correspondence;
an air-conditioning room temperature controller which controls the temperature in the air-conditioning room by causing the air-conditioning room to have a temperature lower than or equal to a lowest one of the plurality of target temperatures when the air conditioner operates in a cooling mode, and causing the air-conditioning room to have a temperature higher than or equal to a highest one of the plurality of target temperatures when the air conditioner operates in a heating mode;
a ventilation airflow determiner which determines a ventilation airflow of each of the plurality of delivery fans on the basis of a corresponding one of the plurality of room target temperatures obtained by the room target temperature obtainer, the temperature in a corresponding one of the plurality of rooms obtained by the room temperature sensor, and the temperature in the air-conditioning room controlled by the air-conditioning room temperature controller; and
a fan airflow controller which controls the ventilation airflow of each of the plurality of delivery fans according to the ventilation airflow determined by the ventilation airflow determiner,

wherein
the ventilation airflow determiner includes:
a temperature comparator which calculates a temperature difference by comparing each of the plurality of room target temperatures obtained by the room target temperature obtainer and the temperature in the air-conditioning room obtained by the air-conditioning room temperature sensor, and
the ventilation airflow determiner determines the ventilation airflow of each of the plurality of delivery fans on the basis of the temperature difference calculated by the temperature comparator.

2. The air-conditioning system according to claim 1 , wherein
the ventilation airflow determiner makes the ventilation airflow of one of the plurality of delivery fans that is installed for a room for which the temperature difference calculated by the temperature comparator is small greater than the ventilation airflow of one of the plurality of delivery fans that is installed for a room for which the temperature difference calculated by the temperature comparator is large.

3. An air-conditioning system, comprising:
an air conditioner which is installed in an air-conditioning room and conditions air in the air-conditioning room;
a plurality of delivery fans which are installed for a plurality of rooms in one-to-one correspondence and deliver the air in the air-conditioning room into the plurality of rooms, the plurality of rooms being independent of the air-conditioning room;
a system controller which controls the air conditioner and the plurality of delivery fans;
a room temperature sensor which obtains a temperature in each of the plurality of rooms and transmits the temperature in each of the plurality of rooms to the system controller; and
an air-conditioning room temperature sensor which obtains a temperature in the air-conditioning room and transmits the temperature in the air-conditioning room to the system controller, wherein
the system controller includes:
a room target temperature obtainer which obtains a plurality of room target temperatures set for the plurality of rooms in one-to-one correspondence;
an air-conditioning room temperature controller which controls the temperature in the air-conditioning room by causing the air-conditioning room to have a temperature lower than or equal to a lowest one of the plurality of target temperatures when the air conditioner operates in a cooling mode, and causing the air-conditioning room to have a temperature higher than or equal to a highest one of the plurality of target temperatures when the air conditioner operates in a heating mode;
a ventilation airflow determiner which determines a ventilation airflow of each of the plurality of delivery fans on the basis of a corresponding one of the plurality of room target temperatures obtained by the room target temperature obtainer, the temperature in a corresponding one of the plurality of rooms obtained by the room temperature sensor, and the temperature in the air-conditioning room controlled by the air-conditioning room temperature controller; and
a fan airflow controller which controls the ventilation airflow of each of the plurality of delivery fans according to the ventilation airflow determined by the ventilation airflow determiner,

wherein
the ventilation airflow determiner includes:
a temperature comparator which calculates a temperature difference by comparing each of the plurality of room target temperatures obtained by the room target temperature obtainer and the temperature in a corresponding one of the plurality of rooms obtained by the room temperature sensor; and
a temperature difference comparator which compares a temperature difference A calculated by the temperature comparator at predetermined timing A and a temperature difference B calculated by the temperature comparator at timing B at which a predetermined length of time has elapsed since the predetermined timing A, and

in response to a result of the comparison of the temperature difference comparator, the ventilation airflow determiner changes the ventilation airflow of each of the plurality of delivery fans to reduce a deviation of the temperature in a corresponding one of the plurality of rooms from a corresponding one of the plurality of room target temperatures.

4. The air-conditioning system according to claim 3 , wherein
in response to the result of the comparison of the temperature difference comparator, when the temperature difference B is smaller than the temperature difference A, the ventilation airflow determiner reduces the ventilation airflow of a corresponding one of the plurality of delivery fans.

5. The air-conditioning system according to claim 3 , wherein
in response to the result of the comparison of the temperature difference comparator, when the temperature difference B is larger than the temperature difference A, the ventilation airflow determiner further determines whether an excessive process in which the ventilation airflow of a corresponding one of the plurality of delivery fans is too large is underway,
when a result of the determination indicates that the excessive process is underway, the ventilation airflow determiner reduces the ventilation airflow of the corresponding one of the plurality of delivery fans, and
when the result of the determination indicates that the excessive process is not underway, the ventilation airflow determiner increases the ventilation airflow of the corresponding one of the plurality of delivery fans.

6. An air-conditioning system, comprising:
an air conditioner which is installed in an air-conditioning room and

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Funada Naoyuki
• Konishi Ayumi

Classifications

• F24F11/74 Primary

  for controlling air flow rate or air velocity · CPC title

• F24F11/80

  for controlling the temperature of the supplied air · CPC title

• F24F2110/10

  Temperature · CPC title

• F24F2003/003

  with primary air treatment in the central station and subsequent secondary air treatment in air treatment units located in or near the rooms · CPC title

• F24F1/0041

  characterised by exhaustion of inside air from the room (in combination with simultaneous introduction of outside air F24F1/0038) · CPC title