Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
145 words
A drive control apparatus (45) for controlling a motor (2) which drives a compressor (3) of an air conditioner, comprising: a rectifying circuit (6, 14) for converting an AC voltage into a DC voltage; an inverter (5) including a combination of a plurality of power controlling semiconductor devices (25 to 30), and controlling said DC voltage from said rectifying circuit (6) in accordance with a drive signal supplied to said combination of said semiconductor devices (25 to 30) so as to produce an AC drive current to said motor (2); and a control circuit (7) for generating said drive signal to said inverter, said control circuit and said rectifying circuit being all or partially formed as a monolithic integrated circuit (42) having a dielectric separation structure, said monolithic integrated circuit (42) and said inverter (5) being mounted on a common substrate of a module (36).
Claim 2
Dependent Claim
56 words
A drive control apparatus (45) according to claim 1, wherein said control circuit (7) includes a microcomputer (8) for generating a control signal, a drive circuit (44) which is responsive to said control signal from said microcomputer to generate said drive signal, and a protective circuit (39) for protecting said semiconductor devices from overcurrent and/or overcurrent.
Claim 3
Dependent Claim
30 words
A drive control apparatus (45) according to claim 2, wherein said monolithic integrated circuit (42) includes said rectifying circuit (6, 14), said drive circuit (44) and said protective circuit (39).
Claim 4
Dependent Claim
33 words
A drive control apparatus (45) according to claim 2, wherein said monolithic integrated circuit (42) includes said microcomputer (8), said rectifying circuit (6, 14), said drive circuit (44) and said protective circuit (39).
Claim 5
Dependent Claim
87 words
A drive control apparatus (45) according to claim 1, further comprising a DC voltage source (43), wherein said inverter (5) is formed of a three-phase bridge type inverter circuit having a combination of power control switching devices (25 to 30), and said drive circuit controls a DC voltage from said DC voltage source (43) in accordance with said control signal so as to generate said drive signal for turning on and off said power control switching devices (25 to 30) of said three-phase bridge type inverter circuit.
Claim 6
Dependent Claim
22 words
A drive control apparatus (45) according to claim 5, wherein said DC voltage source (43) is provided separately from said module (36).
Claim 7
Dependent Claim
23 words
A drive control apparatus (45) according to claim 6, wherein other circuits than said module are mounted on a common circuit board (37).
Claim 8
Dependent Claim
52 words
A drive control apparatus (45) according to claim 7, wherein said module (36) and said common circuit board (37) are mounted in a metal case (46), and said metal case (46) and a container (3) including said compressor are connected to be in intimate contact with each other for good thermal conduction.