Separator, separator system and methods of their operation

Patent metadata

Field	Value
Publication number	US-11607640-B2
Application number	US-201816643738-A
Country	US
Kind code	B2
Filing date	Sep 5, 2018
Priority date	Sep 5, 2017
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

The present disclosure provides a method of operating a separator (1,1a, 1b) for separating particles from a particle-laden airflow. The method comprises receiving, in the controller (18), a separation unit status signal from the separation unit status sensor (16a, 16b, 16c, 16d), deriving, in the controller (18), separator status data based on the separation unit status signal, communicating, via the communication device (19), the separator status data to the external unit (1a, 1b, 26), receiving, via the communication device (19), incoming control data from the external unit (1a, 1b, 26), determining, in the controller (18), based on the separator status data and based on the incoming control data, whether to initiate separating unit maintenance, and selectively initiating separating unit maintenance based on said determination. The disclosure also provides a separator for implementing the method and a system comprising two or more such separators.

First claim

The invention claimed is:

1. A separator for separating particles from a particle-laden airflow, the separator comprising:
an inlet configured to receive the particle-laden airflow;
a separation unit through which the particle laden air flow passes;
a motor configured to draw the particle-laden airflow from the inlet and through the separation unit;
a first separation unit status sensor and a second separation unit status sensor, the separation unit being disposed between the first separation unit status sensor and the second separation unit status sensor;
a controller operatively connected to the motor and to the first separation unit status sensor and the second separation unit status sensor; and
a communication device operatively connected to the controller, the communication device being configured to communicate with at least one unit external to the separator;
wherein the controller is configured to:
receive sensor data from the first separation unit status sensor and the second separation unit status sensor;
determine, based on the sensor data, first separator status data indicative of a pressure drop across or an airflow through the separation unit;
receive second separator status data indicating a pressure drop across or airflow through a second separation unit configured to selectively receive the particle-laden airflow;
determine a maintenance initiation condition for the separator based on the first separator status data and the second separator status data;
generate junction valve control data based on the sensor data; and
send, via the communication device, the junction control data to an airflow junction valve controller to control an airflow junction valve to direct the particle-laden airflow to the separator or a second separator comprising the second separation unit.

2. The separator as claimed in claim 1 , further comprising a frame configured to support the separation unit, the motor, and the controller.

3. A separator for separating particles from a particle-laden airflow, the separator comprising:
an inlet configured to receive the particle-laden airflow;
a separation unit through which the particle laden air flow passes;
a motor configured to draw the particle-laden airflow from the inlet and through the separation unit;
a first separation unit status sensor and a second separation unit status sensor, the separation unit being disposed between the first separation unit status sensor and the second separation unit status sensor;
a controller operatively connected to the motor and to the first separation unit status sensor and the second separation unit status sensor; and
a communication device operatively connected to the controller, the communication device being configured to communicate with at least one unit external to the separator;
wherein the controller is configured to:
receive a first separation unit status signal from the first separation unit status sensor;
receive a second separation unit status signal from the second separation unit status sensor;
derive separator status data based on the first separation unit status signal and the second separation unit status signal;
communicate, via the communication device, the separator status data to the external unit;
receive, via the communication device, incoming control data from the external unit;
receive second separator status data indicating a pressure drop across or airflow through a second separation unit configured to selectively receive the particle-laden airflow;
determine, based on the separator status data, the second separator status data, and the incoming control data, whether to initiate separating unit maintenance on the separator;
in response to determining whether to initiate separating unit maintenance, selectively initiate separating unit maintenance on the separator;
generate junction valve control data based on the sensor data; and
send, via the communication device, the junction control data to an airflow junction valve controller to control an airflow junction valve to direct the particle-laden airflow to the separator or a second separator comprising the second separation unit.

4. The separator as claimed in claim 3 , wherein the separator status data comprises one of:
an indication that separating unit maintenance is imminent,
an indication that separating unit maintenance is in progress, and
an indication that no separating unit maintenance is imminent.

5. The separator as claimed in claim 3 , wherein the incoming control data comprises an indication that the separator is allowed to initiate separating unit maintenance.

6. The separator as claimed in claim 3 , wherein the controller is further configured to receive motor status data;
wherein the separator status data comprises the motor status data.

7. The separator as claimed in claim 3 , wherein the incoming control data comprises motor status data for a second separator comprising the second separation unit; and
wherein the controller is further configured to control the motor based on the motor status data for the second separator.

8. A separator for separating particles from a particle-laden airflow, the separator comprising:
an inlet configured to receive the particle-laden airflow;
a separation unit through which the particle laden air flow passes;
a motor configured to draw the particle-laden airflow from the inlet and through the separation unit;
a first separation unit status sensor and a second separation unit status sensor, the separation unit being disposed between the first separation unit status sensor and the second separation unit status sensor;
a controller operatively connected to the motor and to the separation unit status sensor and the second separation unit status sensor; and
a communication device operatively connected to the controller, the communication device being configured to communicate with at least one unit external to the separator;
wherein the controller is configured to:
receive sensor data from the first separation unit status sensor and the second separation unit status sensor; and
control the motor of the separator based on the sensor data and second motor status data for a second motor of a second separator received from the second separator via the communication device;
determine, based on the sensor data, first separator status data indicative of a pressure drop across or an airflow through the separation unit;
receive second separator status data indicating a pressure drop across or airflow through a second separation unit configured to selectively receive the particle-laden airflow;
determine a maintenance initiation condition for the separator based on the first separator status data and the second separator status data;
generate junction valve control data based on the sensor data; and
send, via the communication device, the junction control data to an airflow junction valve controller to control an airflow junction valve to direct the particle-laden airflow to the separator or a second separator comprising the second separation unit.

Assignees

• Husqvarna Ab

Inventors

• Gustavsson Daniel
• Fogelberg Andreas

Classifications

• B24B55/06

  Dust extraction equipment on grinding or polishing machines (B24B31/12 takes precedence) · CPC title

• B24B55/12

  Devices for exhausting mist of oil or coolant; Devices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like · CPC title

• B24B55/102

  with rotating tools · CPC title

• B01D46/0086

  Filter condition indicators · CPC title

• B04B13/00 Primary

  Control arrangements specially designed for centrifuges; Program control of centrifuges (control arrangements for feed, charge or discharge B04B11/00) · CPC title