Chery S11 / Chery QQ. Manual - part 71

   Chery QQ Service Manual 

 

Chapter7  Air-conditioning 

Section 1  General 

I. Major parts of the air-conditioning and refrigerant flow chart. 

 

 

 

 

 

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II. Function descriptions of each part 

1. C

ompressor

 

The compressor serves to compress the refrigerant that is evaporated as gaseous one 

in evaporator, so the compressed gaseous refrigerant is fed by force into condensator 

in which it is changed to liquid form, heat resulted from vaporization of liquid 

refrigerant can be reused. Compressor used in auto air conditioning can be classified 

as reciprocating, rotating blade and oblique disk style. This car adopts oblique disk 

style compressor that is characterized by little vibration and good

  durability

. As the 

pictures show: 

                     

 

Assembly drawing for the compressor        Inside structure of the compressor1 

                                                                         

 

 

Inside structure of the compressor 2              Inside structure of the compressor3 

 

2. Electric magnetic clutch   

In case of engine operating, when starting up air conditioning, the electric magnetic 

clutch engages, compressor runs. Otherwise, the electric magnetic clutch disengages, 

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compressor does not run. .   

It is recommended to use high power electric magnetic clutches. 

 

 

 

 

 

 

 

Diagram for the clutch fitted on the compressor 

3. Condensator 

A condensator serves to change the high temperature and high pressure refrigerant in 

gaseity to liquid one by taking away the heat of the refrigerant    in gaseity by force. 

With similar structure as radiator, the condensator is installed at the most front of the 

car so as to upgrade heat dissipation rate        and is forcedly cooled by cooling fan. 

                                                           

 

 

 

 

 

 

4. Receiver drier 

Stock solution drier has 3 following functions: 

A)A liquid reservoir is equal to a temporary buffer for liquefacient refrigerant in 

condensator, it used to provide evaporator with liquefacient refrigerant as per the need 

of cooling load.   

B)The drier serves to remove moisture and contamination in the refrigerant with the 

filter and 

desiccant sealed in itself. 

dryer

 

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5. High-low pressure protection switch 

The high-low pressure protection switch is used for control. When there is abnormal 

pressure variation occurring in circular refrigerant, the switch will cut off the circuit 

of the electric magnetic clutch and the condensator’s fan to stop the compressor. 

6. Expansion valve 

The expansion valve ejects the liquid refrigerant from a slim hole that pass through 

stock solution drier to expand it suddenly and produces low temperature and low 

pressure pulverization refrigerant. 

                                 

                   

7. Evaporator 

The cooled pulverization refrigerant makes the temperature inside car lower through 

evaporator. Meanwhile the refrigerant turns to the thermal gaseous refrigerant and is 

supplied into the compressor. As far as function is concerned, evaporator is directly 

contrary to that of condensator (when refrigerant enters evaporator it is liquid. While 

it is in gaseity when exit.) 

                                                               

 

 

 

 

 

 

 

 

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