Apparatus for controlling fan motor, air conditioning system and constant airflow control method of apparatus for controlling fan motor

Patent metadata

Field	Value
Publication number	US-12422160-B2
Application number	US-202218080998-A
Country	US
Kind code	B2
Filing date	Dec 14, 2022
Priority date	Jan 21, 2022
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A motor control apparatus may relate to a motor control apparatus, an air conditioning system, and a constant airflow control method of a fan motor control apparatus of an indoor unit, in which table information on an airflow command value corresponding to a reception pattern or type of a signal is prestored to determine a corresponding airflow command value from the table information according to a result of receiving the signal from a central control apparatus so as to control an operation of a fan motor.

First claim

What is claimed is:

1. A motor control apparatus to control a fan motor of an indoor unit, the motor control apparatus comprising:
a communication device configured to receive a signal from a control apparatus of the indoor unit through a plurality of communication lines, the control apparatus is separate from the motor control apparatus;
a storage configured to store control command for controlling the indoor unit as table information corresponding to a reception pattern of the signal through the plurality communication lines; and
a controller configured to determine an airflow command value to be supplied to a room in which the indoor unit is installed based on the stored table information and a result of receiving the signal, and to control operation of the fan motor based on the determined airflow command value, wherein the control apparatus is configured to calculate the airflow command value based on an operating state of the air conditioning system using the stored table information, and to determine the reception pattern corresponding to the airflow command value based on the stored table information so as to transmit the signal through the one or more communication lines according to the determined reception pattern.

2. The motor control apparatus of claim 1 , wherein a total number of the plurality of communication lines is at least five.

3. The motor control apparatus of claim 1 , wherein each of the plurality of communication lines is provided with a switching element that is switched by the control apparatus to perform communication so as to transmit the signal from the control apparatus to the communication device through the switching element.

4. The motor control apparatus of claim 3 , wherein the communication device receives the signal through a corresponding communication line when the switching elements is on, and does not receive the signal through the corresponding communication line when the switching element is off.

5. The motor control apparatus of claim 1 , wherein the reception pattern of the signal is a pattern corresponding to reception or non-reception of the signal through each of the plurality of communication lines.

6. The motor control apparatus of claim 1 , wherein the controller is configured to determine the airflow command value based on a control command value corresponding to a pattern corresponding to the reception result from the table information.

7. The motor control apparatus of claim 1 , wherein the storage is configured to store parameter information for controlling airflow of the indoor unit, wherein the controller is configured to determine control information for controlling constant airflow based on the determined airflow command value and the parameter information stored in the table information, and wherein the control information is to control operation of the fan motor so as to supply constant airflow to a room based on the determined control information.

8. An air conditioning system for performing air conditioning through a duct for a plurality of rooms, the system comprising:
the motor control apparatus of claim 1 ;
the indoor unit configured to provide airflow to the plurality of rooms through the duct;
an outdoor unit to communicate with the indoor unit; and
the control apparatus configured to control the outdoor unit and the indoor unit to control air conditioning.

9. A motor control apparatus to control a fan motor of an indoor unit, the motor control apparatus comprising:
a communication device that configured to receive a pulse width modulation (PWM) signal from a control apparatus of the indoor unit through a communication line, the control apparatus is separate from the motor control apparatus;
a storage configured to store table information, the table information including a plurality of control command values and a corresponding duty ratio of a PWM signal for each of the plurality of control command values; and
a controller configured to determine an airflow command value to be supplied to a room in which the indoor unit is installed based on the stored table information and a result of receiving the PWM signal, and to control operation of the fan motor based on the determined airflow command value, wherein the control apparatus is configured to calculate the airflow command value based on an operating state of an air conditioning system using the stored table information, and to determine the duty ratio corresponding to the airflow command value based on the stored table information so as to transmit the PWM signal through the communication line according to the determined duty ratio.

10. The motor control apparatus of claim 9 , wherein the controller is configured to determine, from the stored table information, the airflow command value based on a specific one of the control command values corresponding to the duty ratio of the PWM signal received from the communication line.

11. The motor control apparatus of claim 9 , wherein the storage is configured to store parameter information for controlling airflow of the indoor unit, wherein the controller is configured to determine control information for controlling constant airflow based on the determined airflow command value and the parameter information stored in the table information, and wherein the control information is to control operation of the fan motor so as to supply constant airflow to a room based on the determined control information.

12. An air conditioning system for performing air conditioning through a duct for a plurality of rooms, the system comprising:
the motor control apparatus of claim 9 ;
the indoor unit configured to provide airflow to the plurality of rooms through the duct;
an outdoor unit to communicate with the indoor unit;
the control apparatus configured to control the outdoor unit and the indoor unit for air conditioning.

13. An air conditioning system for performing air conditioning for a plurality of rooms through a duct, the air conditioning system, comprising:
an outdoor unit;
an indoor unit configured to provide airflow to the plurality of rooms through the duct;
a control apparatus configured to control the outdoor unit and the indoor unit to control air conditioning; and
a motor control apparatus configured to control a fan motor of the indoor unit based on a result of receiving a signal from the control apparatus through one or more communication lines, wherein the motor control apparatus comprises:
a communication device configured to receive the signal through the one or more communication lines;
a storage configured to store table information, the table information including a plurality of control command values each separately corresponding to a reception pattern of a signal and parameter information for controlling airflow of the indoor unit; and
a controller configured to receive the signal from the communication device, to determine an airflow command value based on the signal received from the communication device and based on the stored table information, and to determine control information for controlling constant airflow of the indoor unit based on the determined airflow command value and the parameter information, and to control operation of the fan motor based on the determined control information, and wherein the control apparatus is configured to calculate the airflow command value based on an operating state of the air conditioning system using the stored table information, and to determine the reception pattern corresponding to the airflow command value based on the stored table information so as to transmit the signal through the one or more communication lines accordin

Assignees

• Lg Electronics Inc

Inventors

• Kang Jeonggu
• Cho Cheolmin
• Ahn Jihyun
• Park Moonho

Classifications

• F24F11/77 Primary

  by controlling the speed of ventilators · CPC title

• F24F11/64 Primary

  using pre-stored data · CPC title

• F24F11/88

  Electrical aspects, e.g. circuits · CPC title

• F24F3/02

  characterised by the pressure or velocity of the primary air · CPC title

• H02P27/08

  with pulse width modulation · CPC title