RU2310141C1 - Liquid-heating heat generator - Google Patents

Abstract

FIELD: heat power engineering.

SUBSTANCE: invention can be used as heat power source in heating and hot-water supply systems. Proposed heat generator for heating of liquid consists of reservoir with supply branch pipe to fed cold water and outlet branch pipe to let out heated liquid. Heat exchanger is made in form of sealed cylindrical housing with alternating through and blind slots on inner end face surfaces and radial heat transfer ribs on outer end face surfaces. Ribs are made in form of flat plate or in form of more complex figure. Water heater is rigidly secured on shaft inside heat exchanger. Water heater is made in form of disk with similar slots and through holes arranged close to shaft which is installed on bearing support with sealing and is coupled through clutch with electric motor. Supply branch pipe is hermetically coupled with delivery branch pipe installed in center of end face surface of heat exchanger. Outlet branch pipe with throttling plate is arranged on cylindrical surface of heat exchanger. Outer surface of reservoir is coated with heat and sound isolator, and reservoir proper is mounted on vibration isolators.

EFFECT: increased efficiency, simplified design.

2 cl, 3 dwg

Description

The invention relates to heat engineering and can be used as a source of thermal energy in heating systems and hot water supply.

A device for heating a liquid is known (see application RU No. 2002113432, F24J 3/00, 11/20/03). The device comprises a stator having a cylindrical cavity, inlet channels for supplying fluid and an output channel for draining fluid, and a rotor mounted with a gap in this cavity, made in the form of disks mounted on the shaft with through and through holes located around the circumference along the periphery of its ends .

The disadvantages of this device are the complexity of the design due to the presence of several disks, low heat output.

Known mechanical heat generator, adopted as a prototype (see patent RU No. 2188366, F24J 3/00, 08/27/2002). The heat generator contains a tank, inlet and outlet pipes, a heat exchanger in the form of a perforated casing, a water heater, consisting of disks and diaphragms installed between them, a top cover with a discharge pipe, a bottom cover, a flange that passes into the shaft, tightening rods. The disks consist of drop-shaped segments separated from each other by channels, and a cavity is formed between the outer and inner parts of the segments having exits to the outside of the disk and to the channel between the segments.

The disadvantages of the prototype are low heat production due to the presence of a large number of loose surfaces between the casing and the water heater and the perforated casing, which does not allow creating high pressure in the working area; design complexity due to the presence on the disks of complex geometric surfaces for machining; the difficulty of balancing rotating parts due to the uneven distribution of the working elements of the disk on its surface and the presence of a large number of rotating parts assembled into a single set.

The proposed invention solves the problem: reducing energy consumption.

The present invention is aimed at achieving a technical result, which consists in increasing the efficiency, simplifying the design.

The specified technical result is achieved in that in a heat generator for heating a fluid containing a tank, inlet and outlet pipes, a heat exchanger and a disk-shaped water heater, the new one is that the heat exchanger is made in the form of a sealed cylindrical body, which is connected to the tank via a branch pipe and is equipped with ribs, in addition, the end surfaces of the water heater disk and the inner end surfaces of the heat exchanger body are made with alternating blind and through grooves, in the outlet a throttle washer tube and container coated termozvukoizoliruyuschim pictures.

The heat generator is made with ribs on the body in the form of flat radially arranged plates.

The execution of the heat exchanger in the form of a cylindrical housing is sealed due to the need to create and maintain in the area closer to the cylindrical surface of the housing, increased pressure arising from the action of centrifugal forces acting on the fluid pumped through the heat generator during rotation of the disk. This zone is the zone with the highest heat output, since under reduced pressure the heat release process between a rotating disk with alternating through and through holes and a stationary body with similar grooves occurs with lesser intensity.

The installation of a throttle washer in the outlet pipe is due to the same need to maintain high pressure inside the heat exchanger. At the same time, the throttle washer dampens the vortex flows of the fluid flowing from the branch pipe. The size of the orifice of the throttle washer is selected based on the diameter of the hole of the outlet pipe, which, in turn, depends on the power of the heat generator and the mass of the pumped liquid.

The execution of the end surfaces of the disk and the inner end surfaces of the heat exchanger with alternating radial through and non-through grooves is due to the fact that both are areas of increased heat transfer due to the action of friction and cavitation at high pressure, and the through grooves allow with acceleration created by the action of centrifugal forces , move the fluid to the cylindrical surface of the heat exchanger and brake it sharply, which will lead to additional heat energy.

The implementation of the heat exchanger with radial ribs or in the form of flat plates, or in another more complex form, providing a high degree of heat transfer from a fluid-heated housing, is due to the need to intensify the redistribution of the increased temperature of the fluid inside the tank.

Coating the container with thermo-sound insulating material allows you to reduce the noise level generated by the heat generator, reduce heat loss during operation of the heat generator, and thereby increase heat output.

The installation of the tank on vibration mounts provides damping of vibrational vibrations of the entire device as a whole and allows expanding the range of application of the heat generator with reduced noise due to the possibility of installing it in any specially equipped room.

Technical solutions with features distinguishing the claimed solution from the prototype are not known and do not follow explicitly from the prior art. This suggests that the claimed solution is new and has an inventive step.

The invention is illustrated by drawings:

figure 1 shows a heat generator, a General view;

figure 2 - heat transfer fins on the body of the heat exchanger;

figure 3 shows the shape of alternating through and through holes on the end surfaces of the disk and heat exchanger.

The heat generator for heating the liquid consists of a tank 1, containing an inlet pipe 2 for supplying cold water and an outlet pipe 3 for draining the heated liquid. The heat exchanger 4 is made in the form of a sealed cylindrical body with alternating through and non-through grooves 5 on the inner end surfaces and radial heat transfer ribs 6 on the outer end surfaces. The ribs are made in the form of flat plates or in another more complex form. Inside the heat exchanger, a water heater 8 in the form of a disk with similar grooves 5 and through holes 9, located in close proximity to the shaft 7, which is mounted in the bearing support 10 with a seal 11 and through the coupling 12 is connected to the electric motor 13, is connected rigidly to the electric motor 13. The inlet pipe 2 hermetically connected to the discharge pipe 14, located in the center of the end surface of the heat exchanger 4. On the cylindrical surface of the heat exchanger there is a branch pipe 15 with a throttle washer 16. The outer surface of the tank 1 covered with heat and sound insulator 17, and the tank 1 itself is mounted on vibration mounts 18.

The heat generator operates as follows.

When the disk 8 is rotated through the clutch 12 by the electric motor 13, cold liquid under pressure through the inlet pipe 2 and the discharge pipe 14 is supplied into the internal cavity of the heat exchanger 4 in the form of a sealed cylindrical body, where it partially moves between the end surfaces of the body and the water heater 8 in the form of a disk, and partially through the through holes 9, it falls into a similar gap between the opposite end surfaces of the heat exchanger 4 and the disk and then rushes to the outlet pipe 15. Here, in a collision In the opposite direction of liquid flows at high pressure, it flows through the throttle washer into the outlet pipe 15 and then into the tank 1. When the liquid passes through the placement areas of alternating through and through grooves 5, an increased release of thermal energy occurs. Part of the liquid moves with acceleration from the action of centrifugal forces through the through grooves 5 and is sharply braked with the release of thermal energy on the cylindrical surface of the heat exchanger housing 4. Through the outlet pipe 3, the liquid is distributed to the consumer of thermal energy. The radiating surface of the ribs 6 contributes to the increased heat transfer of the housing 4 and the rapid mixing of the heated and cold layers of the liquid, and the thermo-sound insulator 17 maintains the temperature of the liquid inside the tank 1, reducing heat loss, and reduces the noise level during operation of the heat generator. Vibration mounts 18 reduce the vibration level of the entire device as a whole. The seal of the shaft 7 relative to the heat exchanger 4 is carried out by the seal 11.

Claims (2)

1. A heat generator for heating a liquid, comprising a tank, inlet and outlet nozzles, a disk-shaped heat exchanger and a water heater, characterized in that the heat exchanger is made in the form of a sealed cylindrical body, which is connected to the tank by means of a branch pipe and provided with ribs, in addition, end surfaces the water heater disk and the internal end surfaces of the heat exchanger housing are made with alternating blind and through grooves, a throttle washer is installed in the outlet pipe, and the tank is covered and heat and sound insulating material. 2. The heat generator according to claim 1, characterized in that the ribs on the housing are made in the form of flat radially arranged plates.

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