AIR CONDITIONING SYSTEM


  1. CONSTRUCTION


    1. An ESB20 type compressor with motor assembly that is driven by a motor is used. The basic construction and operation of this compressor are the same as an ordinary scroll compressor, except that it is driven by an electric motor.

    2. The compressor with motor assembly consists of a spirally wound fixed scroll and rotating scroll that from a pair, a brushless motor, an oil separator, a motor shaft and air conditioning inverter.

    3. An air conditioning inverter is integrated with the compressor with motor assembly. This inverter operates the compressor on HV battery voltage. As a result, the air conditioning system is actuated without depending on the operation of the engine, thus realizing a comfortable air conditioning system and low fuel consumption.

    4. The fixed scroll is integrated with the housing. Because the rotation of the shaft causes the rotating scroll to revolve while maintaining the same posture, the volume of the space that is partitioned by both scrolls varies to perform the suction, compression and the discharge of the refrigerant gas. Locating the suction port directly above the scrolls enables direct suction, thus realizing improved suction efficiency. Containing a built-in oil separator, the compressor is able to separate the compressor oil that is intermixed with the refrigerant and circulates in the refrigerant cycle, thus realizing a reduction in the oil circulation rate.

    5. Low-moisture permeation hoses are used for the suction and discharge hoses of the compressor in order to minimize the entry of moisture into the refrigerant cycle.

      A01RGTLC01
      *1 Rotating Scroll *2 Fixed Scroll
      *3 Oil Separator *4 Discharge Port
      *5 Brushless Motor *6 Motor Shaft
      *7 Air Conditioning Inverter *8 Discharge Hose Port
      *9 Suction Hose Port - -

      CAUTION:

      In order to ensure the proper insulation of the internal high-voltage portion of the compressor with motor assembly and the compressor housing, this model has adopted a compressor oil (ND11) with a high level of insulation performance. Therefore, never use a compressor oil other than ND11 type compressor oil or its equivalent.

  2. OPERATION


    1. The compressor with motor assembly performs suction, compression and discharge of refrigerant gas as described in the table below.

      Stroke Operation
      Suction As the capacity of the compression chamber, which is created between the rotating scroll and the fixed scroll, increases in accordance with the revolution of the rotating scroll, refrigerant gas is drawn in from the intake port.
      Compression From the state at which the suction process has been completed, as the revolution of the rotating scroll advances further, the capacity of the compression chamber decreases gradually. Consequently, the refrigerant gas that has been drawn in becomes compressed gradually and is sent to the center of the fixed scroll. The compression of the refrigerant gas is completed when the rotating scroll completes approximately 2 revolutions.
      Discharge When the compression of the refrigerant gas is completed and the refrigerant pressure becomes high, the refrigerant gas discharges through the discharge port located in the center of the fixed scroll by pushing the discharge valve.
      A01RGP4E05