SU985509A1 - Brake disk with heat pipe type cooling - Google Patents

Description

The invention relates to mechanical engineering.

- A heat pipe-type brake disc is known, containing an axis, a housing with friction end surfaces, an evaporator located in the friction zone, and a silver condenser on the peripheral part of the disc, with a capillary-porous filler attached to the walls inside the disc body - coolant Cl.

The disadvantage of this construction is that the mechanism for returning the liquid coolant from the condenser to the evaporator is ineffective, which reduces the possibility of using such a disc in heavy loaded brakes,

The invention is an increase in the thermodynamic efficiency of cooling & nk of the brake disk by intensifying the return of liquid working fluid to the evaporator. .

This goal is achieved in that the brake disc with cooling type. heat pipe. containing an axis, a housing with end surfaces, a friction bone, located inside the housing in the friction zone, an evaporator, and

on the peripheral part of the disk - a finned capacitor, to the walls of which inside the disk there is attached a capillary-porous filler, saturated with a body - coolant, equipped with two perforated flexible disk mecranes attached in outer diameter to a capacitor, and in the area of the evaporator capillary 10 the porous filler is connected to a membrane, and the accelerator of movement of the working medium is made in the form of an ultrasonic frequency generator with two acoustic concentrators,

15 placed on both sides of the disk within its axis and connected to the centers of the respective membranes.

In addition, capillary-porous

20, the fillers can be mounted with a gap with respect to each inner face surface of the disk, equal to the amplitude of ultrasonic vibrations, and the membranes are installed with the possibility of discrete contact, the filler with the inner face surfaces of the disk when exposed to ultrasonic vibrations

The drawing shows the proposed

30 brake disc, cut.

The device includes a case of a 1 torus disk, end surfaces 2 of friction and heat generation in contact with pads 3, evaporator 4, end; sensor 5, to the walls of which. attached is a capillary-porous filler b, saturated with coolant 7, circulating inside the brake disk housing 1 with a change in its state of aggregation, emitter 8 of the ultrasonic frequency generator connected to terminals 9 and acting through; acoustic hub 10 on the movable perforated disk membrane 11 ", the Emitter 8 and the acoustic concentrate 10 are placed inside the axis 12 of the housing 1 of the brake disc.

The brake disc works as follows: when the brake disc case 1 rotates under the action of centrifugal forces, the working fluid — the coolant 7 — is in liquid form in the co-sensor 5, from which the condensate of the coolant 7 moves to the evaporator 4 when the brake pads 3 are pressed the end surfaces 2 of the housing I of the brake disc during braking generate heat as a result of the friction of the brake pads; About the end surfaces of the 2 brake disc housing.

Under the influence of the generated heat, the heat transfer fluid 7 goes into another aggregative state of steam. During the phase transformation, the heat exchanger 7 from the surface 2 of the heat generation heat actively extracts the heat transported together with the vapor heat exchanger 6, ytel 7 to the condenser 5, from which heat is removed to the surrounding environment by air flow during rotation of the brake disc. Then the condensate of the coolant 7 re-enters the body of the capillary-porous filler b and the cycle of operation of the torus heat pipe is repeated. In the brake disc, in order to increase the specific heat flux to the movable disk perforated membrane 11 and to the capillary-porous filler 6 attached to it, it is acted upon by braking with ultrasonic vibrations through the acoustic concentrator 10 connected to the emitter 8 of the ultrasonic oscillator.

The rate of migration of the coolant 7 from the condenser 5 to the evaporator 4 under the influence of ultrasonic; Exaggerations increases hundreds of times. Thus, the specific heat flux from the evaporator 4 to the condenser

5 also increases hundreds of times. This is especially important for high rotational speeds of the brake disc, when centrifugal forces are very high and can exceed the capillary forces.

Thus, under the influence of ultrasonic oscillations, the migrant heat transfer from the condenser to the brake ferrum is intensified, which ultimately improves the thermodynamic cooling efficiency of the brake disc.

Claims (2)

1. Trunk disc with a type-heat pipe containing an enclosure mounted on an axis with friction end surfaces, located inside the enclosure in the friction zone, and on a peripheral evaporator. disk parts - silver capacitor to the walls of which inside the disk there is attached a capillary-porous filler, saturated with working fluid - heat carrier, and an accelerator moving the working fluid, characterized in that., in order to increase the thermodynamic cooling efficiency of the brake disc by intensifying the return of liquid working fluid to the evaporator, the brake disc is equipped two perforated flexible disk membranes attached in outer diameter to the condenser, with a capillary-porous filler in the evaporator zone connected to the membrane And moving the working fluid accelerator is in the form of ultrasonic frequency generator with two acoustic concentrators arranged on both sides of the disk inside its axis and connected to the respective centers, the membranes. 2. A brake disc in accordance with claim 1, wherein capillary-porous fillers are mounted with a gap relative to each inner face of the disc equal to the amplitude of ultrasonic vibrations, and the membranes are installed with discrete contact between the filler and the inner face surfaces. disk when exposed to ultrasonic vibrations. HcTq4HHKH information taken into account during the examination 1. USSR author's certificate No. §2-4941, cl. F 16 D 65/12, 1975 (prototype).