Valeo Thermo H 160, Руководство по ремонту

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303
Thermo H plus 3 Description of assemblies and components
3.2 Heat exchanger
In the heat exchanger (1, Fig. 303 ) the water flowing
through is heated directly by heating cartridges (7) arran-
ged in a ring shape.
The water is also heated via the inner wall (15) of the heat
exchanger when the diesel burner head is in operation.
The hot exhaust gases resulting from the combustion are
conducted on the inner wall via lamellas (5) and thus give
off heat to them.
The cylindrically welded construction has a water inlet (3)
and a water outlet (11). The heater is integrated into the
cooling water circuit via these two connection ports.
In the water inlet is the control thermostat (12) for the
electrical part of the heater installed.
The temperature limiter (13) for the electrical part and the
control thermostat (14) for the control of the diesel burner
head are located in the wall of the heat exchanger. The
plate at the front has receiving openings with threads for
the heating cartridges. At the rear, the Diesel burner head
is fixed.
3.2.1 Combustion chamber
The combustion chamber (8, Fig. 303 ) is located inside
the heat exchanger. In it the combustion of the diesel-air
mixture produced by the diesel burner head takes place.
After exiting the combustion chamber, the hot exhaust
gases are deflected and passed through fins (5) which are
located on the inner wall of the water-conducting part of
the heat exchanger.
3.2.2 Heating cartridges
At the end of the rod-shaped, water-proof heating
cartridges (7, Fig. 303 ) there is an external thread with a
hexagon for screwing in and the electrical cables are led
out.
Fig. 303 Heat exchanger
1 Heat exchanger outer wall
2 Bleed screw
3 Water inlet
4 Device attachment
5 Lamellae
6 Exhaust gas outlet
7 Heating cartridge (6x)
8 Combustion chamber
9 water-carrying area
10 Blind plugs (3x)
11 Water outlet
12 Control thermostat (HV control
head)
13 Temperature limiter (HV control
head)
14 Control thermostat (Diesel
burner head)
15 Heat exchanger inner wall
1
2
3
5
4
6
7
8
9
10
7
11
12
13
14
15