DE453146C - Cooler - Google Patents

Description

The invention relates to such, in particular intended for motor vehicles Cooler, in which in a common frame radiating elements for the cooling water and the lubricating oil are housed next to each other. Compared to coolers Similarly, the novelty of the invention is that the radiating element for the oil with upper and lower collectors is equipped, which is arranged by the side of this radiation element for the collector Radiating elements arranged for the cooling water intermediate walls are formed, and that the lower collector of the Radiant element for the oil in two compartments for the inflow and outflow of the oil is divided by means of a partition, in which a spring-loaded Valve is used through which the two departments are directly connected can be. This training results in an advantageous with a simple design and inexpensive and reliable mode of operation and overall arrangement of the various radiating elements that makes good use of the available space. Here is also by attaching the spring valve in the septum of the two lower collecting compartments while avoiding special nozzles and external lines, the safety required that in the event of overpressure in the radiating element for the oil, which for example in the cold season can be caused by stagnation or thickening of the oil in the cooling pipes, the inflow section of the lower collector is connected directly to the drainage compartment 'of the same and thereby avoid malfunctions and damage in the radiating element will. The subdivision of the lower collector for the oil can be done in this way that the two tube groups of the associated Strahlüngselementes thus formed are next to each other, so swept through in the same way by the cooling air will. However, the subdivision is expediently made in such a way that the two thereby formed pipe groups lie one behind the other and the oil to be cooled from the rear Group circulates in the front group. This creates a more economical cooling effect achieved, as the oil as a result circulates in countercurrent to the air flow and in the cooling tubes of the rear and the front group causes a uniform temperature drop.

The subject of the invention is on the drawing based on the latter Arrangement illustrated in one embodiment.

Fig. Ι is a front view of the entire cooler;

Figure 2 is a vertical cross-section taken along line 2-2 of Figure 1; . '

Fig. 3 is a horizontal cross-section along line 3-3 of Fig. 1, and

Fig. 4 is a cross-section through the lower part of the radiating element for the oil on a larger scale.

In the common frame 1 there are three

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Cooling or radiating ^{elements 2, 2 1} and 3 housed in such a way that the radiating element 3 serving to cool the oil is located in the middle and the two radiating ^{elements 2, 2 1} for cooling the water are located on both sides of the cooling element 3. According to known designs, the "water coolers 2, 2 ^1" consist of beehive-like elements which are provided with a water inflow collector 4 at the top and a water outflow collector 5 at the bottom.

The flattened tube bundles 8, 8 ^{1 of} the central radiating element 3 open on the one hand into an upper collector 7 and on the other hand into a lower collector 6, 6 ¹ , which are formed in the water inflow and water outflow collectors 4 and 5 by partition walls 11 provided for the lateral radiating elements. The upper collector 7 of the central radiation element forms a single compartment. The lower collector, however, is divided by a partition 10 into two departments 6 and 6 ¹ , of which the department 6 is connected to the oil inflow and the Abas division 6 ^{1 is connected} to the oil outflow. In this way, the oil is forced to flow through the central radiating element 3 in two tube groups 8 and 8 ^1.

As can be seen in particular from Figs. 2 and 4, the subdivision of the lower collector by the partition wall 10 is made so that the two tube groups 8 and 8 ^{1 formed} in this way lie one behind the other in the direction of the cooling air flowing through and the oil from the rear Rohxgruppe 8 into the front pipe group 8 ¹ revolves.

In the partition 10 a throughflow opening is provided which is kept closed by a valve 9 under the action of a spring. The valve 9 is set in such a way that, under normal operating conditions ^{, it closes the compartment 6 from the compartment 6 1} , but if there is a pressure increase of a certain size in the chamber 6, in the direction of the arrow Fig. 4 opens automatically and creates a direct connection between the two departments 6 and 6 ¹ .

The operation of the cooler is as follows: The collector 4 receives the water heated by the engine and forwards it to the collector 5 through the beehive-like elements 2, 2 ¹ , where it undergoes the required cooling before it is returned to the engine.

The chamber 6 acting as an inflow collector receives the lubricating oil, which rises into the tube bundles 8 ^{opening into the chamber 7, in order then to flow down through the tube bundle 8 1} and collect in the chamber 6 ¹ acting as an outflow collector.

This inevitable path, which the lubricating oil has to cover, brings about an economic exploitation of the cooling capacity of the air, since the tube bundles 8 ^{1 are} flushed with the half-cooled oil flowing down from the fresh air, while the already lukewarm air acts on the rear tube bundle 8, so that the temperature drop between the bundles and the air acting on them is practically almost constant.

Occurs in the event of a stagnation of the oil, such. B. in winter due to the thickening of the same, an impermissible overpressure that is greater than the tension of the spring of the valve 9, this opens automatically and connects the chamber 6 directly to the chamber 6 ¹ , whereby the oil immediately flows back to the engine without getting into the tube bundle. In this case, cooling is not necessary, as the oil only accumulates at a low temperature, meaning that cooling is superfluous.

Claims (2)

Patent claims: i. Radiator with radiating elements arranged next to one another in a common frame, for cooling water and lubricating oil, in particular for motor vehicles, characterized in that the radiating element (3) for the oil is equipped with upper (7) and lower collectors (6, 6 ¹ ), which through Partition walls (11) are formed in the collectors of the lateral radiation ^{elements (2, 2 1} ) for the cooling water, and that the lower collector of the radiation ^{element for the oil in two compartments (6 and 6 1} ) for the inflow and outflow of the oil means a partition (10) is subdivided into which a spring-action valve (9) is inserted in such a way that the oil flows through when the pressure increases, bypassing the cooling elements. 2. Cooler according to claim 1, characterized in that the radiation element (3) for the oil by the subdivision of the lower collector (6, 6 ¹ ) is divided into two consecutive tube groups (8 and 8 ¹ ), in which the oil from the rear group (8) in the front group (8 ¹ ) revolves. 1 sheet of drawings. BERLTO. PRINTED IN DEK EICHSDRUCKEREI.