Cooling system for cooling of at least one circulating fluid, and a machine comprising the cooling system

Abstract

The present invention concerns a cooling system for cooling of at least one circulating fluid. The cooling system comprises at least one cooling unit (20) comprising: an air inlet (22) arranged in a first side surface (35); an air outlet (23) arranged in a second side surface (36); a fan for creating an air flow through the unit from the air inlet (22) to the air outlet (23); a cooling element (30) through which at least one fluid is circulating and which is placed in the air flow through the unit (20). The invention is characterized in that the cooling unit comprises a passage (37), which extends between the air inlet (22) and the air outlet (23) through which the air flow flows and in which the flow direction of the air flow is redirected by a redirection plate (24) so that the air flow in to, and out of the cooling unit (20) are separated, and that the size of the cross section area in the air inlet (22) and along the passage (37) that extends between the air inlet (22) and the air outlet (23) as well as in the air outlet (23) is mainly constant. The invention also concerns a machine (10) comprising the cooling system according to the invention.

Description

TECHNICAL FIELD[0001]The invention relates to a cooling system for cooling of at least one circulating fluid, according to the preamble of patent claim 1.[0002]The invention furthermore relates to a machine comprising one, or a plurality, of such cooling systems according to claim 12.BACKGROUND[0003]At different types of ground and construction works, and during mining, different types of machines and vehicles are used in order to facilitate and increase the efficiency of the work. Vehicles that may be used are e.g. drill rigs, asphalting machines, excavation machines etc. In common for all these machines are that they are exposed to surrounding air comprising particles and waste material which deteriorate several of the systems and components of the machines and vehicles that are essential in order to make the machines and the vehicles work satisfactory.[0004]An important system in all these machines and vehicles is the cooling system that prevents overheating of the driving motor ...

AI Technical Summary

Benefits of technology

[0014]By separating the air flows in to, and out of, the cooling unit the performance of the cooling unit is improved since air, that is already heated, flowing out from the cooling unit is prevented from being mixed with the air that is about to flow into the cooling unit. Thereby a lower temperature of the air flowing into the unit is obtained, which means that the cooling efficiency of the unit is improved.

[0033]The invention, as stated in the claims, is intended to be used in e.g. machines appropriate for ground works, drilling or similar. These machines comprise one or a plurality of cooling systems according to any of the definitions above, whereby the air inlet, or the air inlets, is placed in connection to anyone of the sides of the machine, and the air outlet, or the air outlets, is placed on a upper surface of the machine. A cooling system installed and arranged in this way is able to supply sufficiently cooling to big machines. The orientation of the air inlet at the side surfaces of the machine, the rear surface and / or the longitudinal surfaces, also reduces the amount of pollutions and particles sucked into the cooling system, since the amount of pollutions and particles in this area normally is low since it is situated far from the place where the working tools of the machine are placed. By placing the air outlet on the upper surface of the machine the outgoing air flow will not contribute to any vortex formation close to the ground, which otherwise would lead to further particles close to the air inlet.

Problems solved by technology

However, the use of the surrounding air for cooling of the fluid of the cooling system leads to some severe consequences when air pollutants and particles are accompanying the air that is flowing into the system, and / or the machine or the vehicle where they are deposited on the cooling element etc.

These deposited particles are polluting the interior of the system and / or the machine, which considerably deteriorate the efficiency of the system, and increases the risk of breakdowns considerably.

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