Geely CK (2008). Manual part — 75
Geely CK (2008). Manual part - 75
297
Part IV Air Conditioner and Inside &
Outside Trim
Chapter 1 A/C System
A/C system consists of refrigerating and heating system. The Refrigeration system mainly comprises
compressor, condenser and evaporator. The refrigerant circulation absorbs the heat in the air and discharge
the vapour to lower the temperature in and dehumidify the compartment. The heating system is mainly
composed of heat exchanger and heater. It heats the compartment throught the heat exchanger by heating
the air with the heat from the cooling water in the engine. The control of air temperature, humidity and
velocity of flow in the compartment is realized by independent or joint working of heating and Refrigeration
system.
Section 1 The Structure & Working Principle of Refrigeration System
The structure of Refrigeration system is shown in Figure 1.
Figure 1 The Structure and Working Principle of Refrigeration System
1. Compressor 2. Condenser 3.Receiver/Drier
4.Pressure Relief Valve 5.Expansion Valve 6.Evaporator 7.Blower
Refrigeration system uses vapor compressing refrigeration cycle, comprising the compressor, condenser,
pressure relief valve, evaporator, blower , expansion valve, receiver/drier and pipe.
It's working principle is as shown in the Figure 1. The compressor (1) sucks in the refrigerant gas in the
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evaporator (6) via the expansion valve (5) for compression and generates high temperature and pressure
vapor which then is cooled into liquid through the condenser (2) and dried in the receiver/drier (3), then
restrict the expansion valve and enable certain amount of refrigerant liquid to be vapored into low tempera-
ture and pressure vapor in the evaporator, meanwhile, absorb large amount of heat and perform heat ex-
change with the air sucked in by the blower, then distribute the cooled air to the vehicle compartments. Cycle
the operation until the compartments gets the desired temperature.
See Table 1 for the Refrigeration system parameter.
Table 1 Refrigeration system parameter
Parameter
Control the mixture of cool and hot air
Nominal Refrigeration/W
4200
Displacement/(mL/r)
108
Model
SW-5H11
Electromagnetic Clutch Power Dissipation/W
45
SW-100/135
Maximum Airflow/(m
3
/h)
400
Airflow adjustment
4th Shift Manual
Motor Power Consumption/W
180
Dimension/mm
18×302×630
Heat Exchange/W
9400
Air Resistance/Pa
≤
156
Fan Motor Current/A
≤
8
Fan Motor RPM /(r/min)
2900±200
Dimension/mm
86×213×235
Refrigeration/W
4200
Thermal Expansion Valve
Inner Balance 1.5 ton
4PK830
630±20
Refrigerant Fill/g
Blower
Condenser
Evaporator
Drive belt
Item
Temperature adjustment method
Compressor
Lubricant /mL
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Section 2 Heating System
Heating system uses mixed temperature adjustment which controls both cold and hot air and is featured in
outstanding temperature adjustment performance. The cold and hot air can be completely mixed at each
outlet and achieve continuous temperature adjustment. The air duct arrangement on the instrument panel is
shown in Figure 2. The air flow channel system is shown in Figure 3.
I. Heating System Parameter and Structure
Heating system uses water heating structure which uses the engine coolant as the heat source, leads the the
coolant into the heating radiator installed in the vehicle compartment and has the interior or exterior air blow
across the radiator with the blower to increase its temperature. The system consists of the blower assembly,
heating control assembly and heater assembly.
Figure 2 Heating Duct Arrangement
Inside and Outside Air Switch Door
Outdoor Air
Indoor Air
Defogger
Intermidiate outlet
Heater
Blower Motor
Evaporator
Air Mix Door
Heating Radiator
Figure 3 Air Flow Channel System Illustration
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1. Heating System Parameter
Heating system radiating power, blower fan diameter, power dissipation and heater radiator dimension are
show in the table 2.
Table2
Heating System Parameter
2. Blower
Blower is located at the lower part of the goods
compartment. The door inside the blower case is con-
trolled by the servomotor. The exchange of the air in-
side and outside the door can be achieved by adjusting
the door to import the outdoor air and recirculate the
indoor air.
Blower motor uses Permenant magnet DC motor with multple blade fan. In addition, there are a set of
resistance on the blower which adjust the fan, called as adjusting resistor. Blower provides wind supply not
only to the heating radiator, but also to the evaporator in the refrigeration system.
3. A/C Control Mechanism
A/C control mechanism is located in the middle of the instrument panel. All adjustment except the A/C switch
and inside and outside circulation switch are made by rotating the control knob. The A/C control panel is
shown in Figure 4.
1
Temperature adjustment control knob: control the mix ratio of the cold and hot air by adjusting the air mix
door, use the control knob to achieve continuous temperature adjustment.
2
Outlet control knob: use 4 ranges, different types of air flow adjustment available.
3
Inside and outside circulation switch: It can toggles between the introduction of outdoor air and recirculation
of the indoor air. (press the switch for inside circulation)
4
Blower switch: when the plum blossom range is closed, the remaining four ranges are used to adjust the
air flow.
5
A/C switch: as the switch of the refrigeration system, use press-button with built-in A/C indicator.
Dissipation Power/W 4000
Air Flow/(m
3
/h)
280
Power Consumption /W 180
Fan Diameter/mm 140
Overall Radiator Dimension 159.4mm×140mm×49mm
Figure 4 A/C Control Panel
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