Noise control of air conditioner
First Claim
1. In an air conditioning apparatus having a condenser fan, an evaporator fan, a compressor, and at least two motors for driving the fans and the compressor, the improvement comprising means, responsive to vibration of the apparatus, for controlling a speed of each of said motors to reduce the vibration;
- wherein said controlling means performs a test to determine optimum speeds of said motors to minimize the vibration, said controlling means includinga microcomputer means operative during the test to change the speed of at least one of said motors to each of a plurality of speed values within a predetermined speed range, andat least one detector for detecting values of the vibration, said controlling means controlling said at least one of said motors, at a termination of the test, to operate at a speed value at which the vibration is minimized.
1 Assignment
0 Petitions
Accused Products
Abstract
An air conditioning apparatus having a condenser fan, an evaporator fan, a compressor, at least two motor for driving the fans and the compressor, and being responsive to vibration of the apparatus to control the speed of each motor to reduce the vibration. In its preferred embodiments, the apparatus performs a test to determine optimum speeds of the motors to minimize the vibration. The apparatus uses a microcomputer, operative during the test to change the speed of at least one of the motors to each of a plurality of different speed values within a predetermined speed range, and at least one vibration detector. The detector detects values of the vibration when the motors are operating at the different speed values. At the end of the test, the motors are controlled to operate at the speed value at which the vibration is minimized.
-
Citations
12 Claims
-
1. In an air conditioning apparatus having a condenser fan, an evaporator fan, a compressor, and at least two motors for driving the fans and the compressor, the improvement comprising means, responsive to vibration of the apparatus, for controlling a speed of each of said motors to reduce the vibration;
- wherein said controlling means performs a test to determine optimum speeds of said motors to minimize the vibration, said controlling means including
a microcomputer means operative during the test to change the speed of at least one of said motors to each of a plurality of speed values within a predetermined speed range, and at least one detector for detecting values of the vibration, said controlling means controlling said at least one of said motors, at a termination of the test, to operate at a speed value at which the vibration is minimized. - View Dependent Claims (2, 3, 4, 5, 6)
- wherein said controlling means performs a test to determine optimum speeds of said motors to minimize the vibration, said controlling means including
- 7. An air conditioning machine, comprising at least two motors for actuating a condenser fan, an evaporator fan and a compressor, and means for controlling and modulating the rotational speed of each motor to enable the respective rotational speeds of the motors to be adjusted to an optimum status which eliminates resonant vibration and reduces noise when the machine operates in its environment, said means including a microcomputer and at least a detector for detecting vibration and noise values of the machine, searching for an optimum status for all said motors wherein said machine operates with minimum vibration and noise and controlling said motors to their required rotational speeds.
Specification