I. Overview

1. DVM system series

(3) Variable compressor

The world’s first PWM(Pulse Width Modulation) compressor controls the cooling & heating capacity automatically, depending on the load.

1) Principle of the digital compressor

①Composition

The solenoid valve is installed for the compressor´s loading / unloading between the upper part of the fixed scroll and the suction pipe.

②Mechanism

a.When the solenoid valve is turned off, the fixed scroll is closed to the orbiting scroll (Loading),

b.When the solenoid valve is turned on, the fixed scroll is separated from the orbiting scroll (Unloading),

c.This process controls the On / Off times of the valve and the rotating refrigerants in the circle, thus adjusting the capacity.

d.The cooling capacity of the outdoor unit is controlled automatically,depending on the number of operating indoor unit(s).

Running ratio of compressor(%)

< 1 Compressor >

100

90

80

70

loading

60

50

40

30

20

unloading

10

0

3000

6000

9000

12000

15000

18000

Total capacity of operating indoor unit(s)

(kcal/h)

< 2 Compressor >

Running ratio of compressor(%)

100

90

80

70

60

50

40

30

20

10

0

Digital only operating

Digital operating

Fixed compressor operating

3000

6000

9000

12000

15000

18000

Total capacity of operating indoor unit(s)

(kcal/h)

I8

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Samsung 3759 technical manual Variable compressor, Principle of the digital compressor
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