DE3235173A1 - COOLANT SUPPLY - Google Patents

Description

DipL-Ing. LUDWIG MUNK ~ £ ~ " « ^ augsburg 9/6/82

Prinzregentenstrasse 1 L **

PATENT ADVERTISER phone (0821) 519622

at the European Patent Office reins. Representative ^{Telex: 53 37 6l} (VerteÜers for PA Munk)

[p] Parking garage Scfaaezlerstrasse

Dipl.-Ing. Ludwig Munk Prinzregentenstrasse 1, 8900 Augsburg Bank details:

Deutsche Bank Augsburg (BLZ 72070001) Account No. 4156790

German Patent Office "Dresdner Bank Augsburg (BLZ72080101)

Zweibrückenstrasse 12 Komo no. 107001000

Post office Munich account no. 488 20-808

8000 Munich 2.

EKl-Wd

VKE: 106321

Applicant: HITSm MACHIEBRr SAIiES (u.E.) LTD

Coolant supply equipment

The invention relates to a KüMmittelversorgungseinrichtung for a ship engine, in particular an outboard engine, with water cooling.

In the known arrangements of this type, the cooling water is received below the waterline of the ship, circulated in the su cooling engine and then drained. Outboard motors are often found at proportionate small ships, such as lifeboats or ferry boats, which are designed as inflatables are. Such boats can be used, for example, to bring a work team between a regular

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ship and a drilling rig. During the transport from the parent ship to the drilling rig, that becomes Boat with the work crew already in it lowered to the side of the main ship and once the boat is in the water, the associated outboard motor is started. It can however, experience has shown that starting the outboard motor does not last for such a short time can be accomplished to prevent the dinghy from drifting off his. ' Bracket due to the To prevent swell and the army current, what for the work crew in the boat can represent a great danger to life and limb.

However, since the known outboard engines are dependent on the water for cooling, in which the boat floats, it could cause ^serious damage to the engine if the engine is already would run as long as the boat is still outside the water, since in such a case, due to lack of cooling severe overheating is to be feared.

Proceeding from this, it is therefore the object of the present invention while avoiding the disadvantages to create a coolant supply device of the type mentioned at the beginning of the known arrangements, which allows the engine to be started and operated before the ship in question on which this engine is picked up, is launched into the water.

According to the invention, this object is achieved in a coolant supply device of the generic type.

ΒΑΠ

solved by that it can be reversed by means of a switching valve that the ship's engine can be fed Coolant optionally from an on-board coolant source on or off the ship is recordable.

These measures ensure that the ship's engine can be reliably cooled at all times, and regardless of whether the associated ship has already been launched or not. It is therefore it is advantageously possible to lower the engine of a parent ship into the water To start the boat before it is lowered so that the boat can be started immediately as soon as it comes into contact with water is maneuverable, which has a positive effect on the safety that can be achieved.

An advantageous embodiment of the higher-level hatreds can consist in the switching valve a valve housing with a first inflow connection associated with the on-board coolant source and a second inflow port associated with the offshore coolant source as well as having an outflow connection jointly assigned to the two inflow connections, via which the ship's engine can be acted upon with coolant, and that a valve member is provided in the valve housing is, by means of which one of the inflow connections can be shut off and at the same time the respective others can be released, the first inflow connection associated with the on-board coolant source '30 can be released when the other, second inflow connection is dry and this one and the first one can be released

BATH ORIGINAL

can be shut off if it is filled with water from the area of the assigned ship can be supplied. These measures result in a simple and clear Structure and high operational reliability of the switchover valve according to the invention.

In a further expedient development of the superordinate measures, one can form the valve member Valve housing bore accommodating the sliding piston, into which the inflow connections and in the area open between these the outflow connection, be designed as a through hole, the one hand lockable by means of a screw which acts on the sliding piston and supports it and on the other hand a formed by a covenant, has the sliding piston assigned seat, which the first, the on-board coolant source associated, the spring opposite inflow connection limited. This ensures that the valve member due to the pending fluid pressure in the area of the on-board coolant source associated inflow connection can be actuated against the spring force as soon as the on-board coolant source is activated. For this purpose, the spring force is simply to be dimensioned in such a way that it depends on the Liquid pressure resulting force can be overcome. These measures thus result in more advantageous Way a certain self-control of the switching valve such that the normally open second inflow connection when activating the on-board Coolant source is automatically closed and vice versa.

Further advantageous refinements and expedient

BATH ORIGINAL

Further developments of the superordinate measures result from the following description of an exemplary embodiment based on the drawing in conjunction with the remaining subclaims.

In the drawing show:

Figure 1 is a rear view of an outboard motor with inflatable boats having a coolant supply device according to the invention in schematic representation and

Figure 2 shows a schematic representation of the invention Switching valve in section.

Figure 1 shows an inflatable dinghy 1 with an outboard motor 2, which is provided with water cooling should be. In the area of the coolant circuit, a water pump (not shown) to move the cooling water flowing through the cooling chambers of the outboard motor 2 may be provided. Upstream from this one A switching valve 3 is arranged in the pump, as can be seen in detail from FIG. The switching valve 3 has a first inflow connection 4- for supply of the coolant circuit with cooling water from an on-board coolant source and a second inflow connection 5 2 to supply the coolant circuit with water taken in from outside the boat. The two inflow connections 4 and 5 are shared with one another. Outflow connection 6 connected through which the cooling water in the cooling circuit of the outboard motor 2 is fed in. The inflow connections A- and 5 ^ ηά the outflow connection 6 are inserted into associated bores in the housing of the switching valve 3 Sleeves formed to which the continuing lines,

about 2 ¹ orm of hose lines can be connected. The inflow connection A is connected by means of a line 7 to an on-board water or fresh water supply, whereby water that can be taken from it can be fed to the switching valve 3 via a one-way quick coupling 8 provided at the end of the line 7. The one-way quick coupling ensures that water from the line 7 cannot hit back into the water or fresh water supply that can be coupled with it. Another line connects a seawater receiving nozzle 10, which is arranged below the waterline of the boat 1, with the second inflow connection 5 of the switching valve 3, which is provided for receiving seawater Water with a minimum pressure of 103.4-3 χ ΙΟ · ⁷ Nm (15 psi) is supplied.

The switching valve 3 is, as can best be seen from the figure, with one here as a sliding piston formed valve member 11, by means of which either the inflow connection 4 · or the inflow connection 5 is open and connected to the outflow connection 6, the other inflow connection locked, is. The sliding piston forming the valve member 11 is moved by means of a spring 12 held in a normal position in which the first inflow connection 4 is shut off, so that at with the engine running and the boat in the water via line 9 and inflow connection 5 to the Switching valve 3 and its outflow connection 6 is fed to the engine. If, however, the engine

should be started before the boat is lowered into the water, the quick coupling 8 actuated, whereby the line 7 with water or. Irish water and thus pressurized, the one here on the one closing the inflow connection A- The end face of the sliding piston forming the valve member 11 acts. For this purpose, the valve member is 11 forming sliding piston assigned a through hole of the valve housing, on the one hand can be closed by means of a screw supporting the spring 12 and, on the other hand, by a collar, has here simply formed by the end face of the sleeve assigned to the inflow connection 4, which limits the first inflow connection 4, which lies opposite the spring 12. The first inflow connection 4 is thus arranged coaxially to the through hole receiving the valve member. The second inflow connection 5 um! the outflow connection 6, which is also shown in this through hole open out, are arranged transversely to this, in such a way that the outflow connection is located between the two inflow connections 4 and 5 so that that in one or the other end position of the sliding piston forming the valve member 11 a reliable one There is a flow path from the respectively open inflow connection 4 or 5 to the outflow connection 6. Of the The distance between the seat and the outflow connection 6 therefore corresponds approximately to the length of the piston. The same is true for the clear width in the area of the confluence of the inflow connection 5i that when the spring is compressed is bridged by the piston 11 without the outflow connection 6 is significantly impaired.

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The one with activated quick coupling 8 in the line 7 pending liquid pressure causes the valve member 11 forming displacement piston against the force of the spring 12 is lifted from the associated seat and pushed back, the Inflow connection 5 blocked and the flow path from inflow connection 4 to outflow connection 6 released so that the water that can be taken up by means of the line 7 is now in the direction of the outflow connection 6 to be led. In this way it is ensured that the motor 2 is cooled and therefore already in operation can be taken while the boat is first being lowered into the water. With the help of line 7 uncL the Quick coupling 8 can advantageously be a connection to the cooling circuit of the parent ship or mother ship, that floats in the water and can therefore reliably absorb seawater. One of his own Tank is therefore not required at all.

As soon as the boat is lowered and even floats in the water, the one-way quick coupling 8 is released again, whereby the sliding piston forming the valve member 11 can be pushed back under the action of the compressed spring 12 into its starting position, in which it has its front face on the assigned seat rests and thereby blocks the inflow connection 4. At the same time, the flow path between the inflow connection 5 and ¹¹ ^ outflow connection 6 is released again, so that seawater that can be taken up via the suction nozzle 10 is now fed into the cooling circuit. This ensures practically uninterrupted cooling of the motor 2. The sliding piston forming the valve member 11 is provided with a relief bore 13 connecting its end faces. Through this

it is ensured that the sliding piston can be moved comparatively quickly.

The measures according to the invention can easily can also be used retrospectively in ship engines that are already in operation, such as outboard engines to be brought. For this purpose, only the normally already existing one is exclusively to interrupt the Eühlwasserleitung fed with seawater by installing the switching valve according to the invention and to provide an on-board water supply. It would of course also be conceivable to use the previous one Replace the seawater intake device with a different one.

From the foregoing it can be seen that the present invention is primarily used for rescue vehicles and especially those entering the water from the side of a ship, dock, or wharf be drained, can be used with particular advantage.

Claims (12)

Expectations Coolant supply device for a ship's engine (2), in particular an outboard engine, with water cooling, characterized in that it can be reversed by means of a switching valve (3) so that the coolant that can be fed to the ship's engine (2) is optionally from a coolant source provided on board or from outside of the ship (1) can be received. 2. Coolant supply device according to claim 1, 10 characterized in that the switching valve (3) has a valve housing with a first 2uströmanschluss (A-) assigned to the coolant source provided on board, a second coolant source located outside the ship (1) sugeord-15 Grant allowance (5) as well as one of the two -Z- jointly assigned to the inflow connections (4 or 5) Has outflow connection (6) via which the ship's engine (2) can be acted upon with coolant is, and that a valve member (11) is provided in the valve housing, by means of which one of the inflow connections (4 · or 5) can be shut off and the other one at the same time can be released, the first inflow connection associated with the on-board coolant source (4-) can be released when the other inflow connection (5) is dry and this can be released and the first inflow connection (4-) can be shut off when it is supplied with water from the area around the ship (1) can be supplied. 3. coolant supply device according to claim 2, characterized in that the valve member (11) when the coolant flow fed from the on-board coolant source is interrupted automatically into a position or is iialtbar in this position in which the second, the water intake from outside the ship (1 ) associated inflow connection (5) is open. 4 ·. Coolant supply device according to Claim 3 or 3 *, characterized in that the valve member (11) can be held in a normal position shutting off the first inflow connection (4-) assigned to the on-board coolant source by means of a peder (12) acting on it. 5. coolant supply device according to one of claims 2 to 4-, characterized in that ßAD 4- the valve member (11) designed as a sliding piston is, which is preferably with a high speed enabling Through hole (13) is provided. 6. Coolant supply device according to claim 5 » characterized in that the sliding piston forming the valve member (11) is received in a bore in the valve housing into which the inflow connections (4 or 5) and in the area between them the outflow connection (6) open. 7- coolant supply device according to claim 6, characterized in that the bore receiving the sliding piston forming the valve member (11) is designed as a through bore which can be closed on the one hand by means of a screw supporting the spring (12) and on the other hand a collar formed by a collar Has sliding piston assigned seat surface which delimits the first inflow connection (4), which is assigned to the on-board coolant source and is located opposite the spring (12). 8. Coolant supply device according to one of the preceding claims 4 to 7> characterized in that the spring force acting on the valve member (11) forming the displacement piston is less than the force counteracting this, from the coolant applied to the first inflow connection (4) when it is applied is. '·' _ ' .Iähimmittelversorgungseinrichtung with a coolant pump, characterized in that the coolant pump "is arranged downstream of the switchover valve (3). 10. Coolant supply device according to one of the preceding claims, characterized in that the inflow connections (4- "or 5) of the switching valve (5) can be connected to the on-board coolant source or to an intake port (10) through coolant lines (7) or 9) are arranged with its inlet cross-section below the waterline of the associated ship's engine (2) receiving ship (1). 11. Coolant supply device according to one of the preceding claims, characterized in that the coolant line (7) assigned to the on-board coolant source has a coupling device (8) sum connection to a coolant source in the region downstream of the switching valve (3). 12. Coolant supply device according to claim for the engine of a boat belonging to a mother ship, characterized in that the coolant line (7) assigned to the onboard coolant source can be connected to the cooling water supply of the mother ship by means of the coupling device (8), which is preferably designed as a one-way quick coupling.