KR20170101523A

KR20170101523A - multi-stage head for fluid friction boiler

Info

Publication number: KR20170101523A
Application number: KR1020160024142A
Authority: KR
Inventors: 오영한
Original assignee: 오영한
Priority date: 2016-02-29
Filing date: 2016-02-29
Publication date: 2017-09-06
Also published as: KR101860864B1

Abstract

The present invention relates to a head for heating a fluid with a friction through rotation, in which a fluid is heated by a fluid to increase the frequency of friction between fluids and to promote turbulent flow, A plurality of openings formed in one side portion of the fluid friction boiler for opposing the inflow port, a receiving space formed in the inside of the fluid friction boiler multi-step head, A cylindrical outer end body portion having a motor connection portion connected to the cylindrical outer end body portion; A cylindrical inner end body portion disposed inside the accommodation space and integrally rotated by being coupled to the outer end body portion; And a plurality of protrusions protruding in the circumferential direction on the outer circumference of each of the body portions, Wherein the friction protrusions and the frictional grooves are disposed in order along the respective circumferential surfaces of the protrusions and the discharge holes penetrating the friction protrusions are formed, The present invention provides a fluid friction boiler multi-stage head comprising:

Description

Multi-stage head for fluid friction boiler

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid friction boiler multi-stage head, and more particularly, to a multi-stage fluid friction boiler multi-stage head for a fluid friction boiler multi-stage head which increases the friction frequency between fluids in a head for heating a fluid with friction through rotation, To a multi-stage head.

Generally, a heating device that heats fluids such as water, steam, or thermal oil for hot water supply or heating uses a chemical fuel or electricity to heat the fluid and to use the heated fluid directly or through a heated fluid to a constant temperature It is a device to heat indoor.

Here, the heating apparatus using chemical fuel has a problem that a large amount of pollutant is discharged during the combustion process of the chemical fuel, and the thermal efficiency is lower than that of the consumed chemical fuel.

A heating device using electric energy has a heating device that uses electric resistance and a heating device that generates heat through the flow of fluid. In this case, electric heaters using electric resistance have a problem that there is always a risk of electric leakage or fire depending on the properties of fluids, and it takes a long time to heat a large amount of fluids because the fluid can be heated only near the heating wire there was.

Recently, a frictional heating method in which a fluid is flowed through electric energy and a fluid is directly heated by a fluid flow is used. At this time, it is important to increase the flow rate and turbulent flow of the fluid in order to accelerate the heating of the fluid through friction, cavitation, etc. of the fluid.

Meanwhile, in the conventional frictional heating apparatus, a cylindrical case and a cylindrical head rotated inside the case are disposed, and the fluid is rubbed between the head and the case through rotation of the head to generate heat.

However, when the space is too wide, the amount of friction of the fluid is insufficient and the heating is not properly performed. When the space is too narrow There is a problem that the amount of fluid to be heated is small and it takes a long time to heat a large amount of fluid.

Thus, although a plurality of wings are formed on the outer periphery of the head to increase the friction area with the fluid, it has not provided enough turbulence flow and fluid friction and flow velocity to raise a large amount of fluids.

Korean Patent Publication No. 10-2011-0027157

In order to solve the above problems, there is provided a multistage fluid friction boiler multi-stage head in which, in a head for heating a fluid by friction through rotation, a friction frequency between fluids is increased and a turbulent flow is promoted, We will do it.

In order to solve the above problems, the present invention provides a multi-stage fluid friction boiler multi-stage head for heating the fluid introduced as it is connected to a motor in a cylindrical heating space inside a case provided with an inlet and an outlet for the fluid, A cylindrical outer end body portion having an accommodation space formed therein and having a motor connection portion connected to the motor at the other side thereof; A cylindrical inner end body portion disposed inside the accommodation space and integrally rotated by being coupled to the outer end body portion; And a plurality of protrusions protruding in the circumferential direction on the outer circumference of each of the body portions, Wherein the friction protrusions and the frictional grooves are disposed in order along the respective circumferential surfaces of the protrusions and the discharge holes penetrating the friction protrusions are formed, The present invention provides a fluid friction boiler multi-stage head comprising:

The fluid friction boiler multi-stage head for heating the fluid introduced as the fluid is connected to the motor in a cylindrical heating space in a case provided with an inlet and an outlet for the fluid, and has an opening disposed at one side thereof and opposed to the inlet A cylindrical outer end body portion having a receiving space formed therein and having a motor connecting portion connected to the motor at the other side thereof; A cylindrical inner end body portion disposed inside the accommodation space, the outer end body portion being supported to be slidly rotated around the outer periphery thereof; And a plurality of protrusions protruding in the circumferential direction on the outer circumference of each of the body portions, Wherein the friction protrusions and the frictional grooves are arranged in order along the respective circumferential surfaces of the protrusions and the discharge holes penetrating the friction protrusions are formed, The present invention provides a fluid friction boiler multi-stage head comprising:

The multi-stage fluid friction boiler multi-stage head is connected to the motor in the cylindrical heating space inside the case and rotates as it rotates. The multi-stage fluid friction boiler multi-stage head includes an opening formed at one side thereof, a receiving space formed therein, A cylindrical outer end body portion having an outer end motor connection portion connected to the outer end motor shaft to be rotated; A cylindrical inner end body portion disposed inside the accommodation space and having an inner end motor connecting portion connected to an inner end motor shaft rotatable in the other direction at one side portion; And a plurality of protrusions protruding in the circumferential direction on the outer circumference of each of the body portions, Wherein the friction protrusions and the frictional grooves are arranged in order along the respective circumferential surfaces of the protrusions and the discharge holes penetrating the friction protrusions are formed, The present invention provides a fluid friction boiler multi-stage head comprising:

At this time, a plurality of friction ribs are provided along the longitudinal direction on the inner circumferential surface of each of the body portions, and each of the friction ribs is spaced apart from each other in the circumferential direction of the body portions.

Preferably, the friction protrusions include high-end protrusions and low-end protrusions arranged alternately along the circumferential direction with their height adjusted.

Through the above solution, the fluid friction boiler multi-stage head according to the present invention provides the following effects.

First, since the inner end body portion is provided in the inner receiving space of the outer end body portion in a multi-stage manner, the heating region through the bubble formation and the inner wave is expanded through the discharge holes arranged in the respective body portions, However, since the inner wall of the body part / case collides with the inner wall of the case in a multistage manner, the momentum of the fluid molecules remarkably increases, so that the friction heating between the fluid and the friction is promoted, so that the heating speed of the product can be improved.

Secondly, since the friction ribs are provided on the inner circumference of the inner end body portion and the outer end body portion, the multi-step friction heat is generated in the inner circumference of each of the body portions so that the heating speed of the product can be remarkably improved. The range of application of the product can be increased.

Since the high protrusions and the low-level protrusions are provided with different stepped portions, the spacing between the discharge holes and the case of each protrusion is adjusted so that the fluid flows at a high speed, And the fluid are intermittently generated at a predetermined time interval, thereby minimizing the wear and damage of the case and improving the durability of the product.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a fluid friction boiler according to an embodiment of the present invention in which one side of an outer end head is cut away. FIG.
2 is a cross-sectional view of a fluid friction boiler according to one embodiment of the present invention.
3 is a cross-sectional view showing an AB section of Fig.
4 is a cross-sectional view of a fluid friction boiler according to another embodiment of the present invention.
5 is a cross-sectional view of a fluid friction boiler according to another embodiment of the present invention.
6 is a cross-sectional view of the CD section of FIG. 5;

Hereinafter, a fluid friction boiler multi-stage head according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a fluid friction boiler according to an embodiment of the present invention in which one side of an outer end head is cut away, FIG. 2 is a cross-sectional view showing a fluid friction boiler according to an embodiment of the present invention, 2 is a sectional view showing an AB section.

1 to 3, a fluid friction stirrer 100 according to an embodiment of the present invention includes a case 10, a head 30, and a motor (not shown).

Here, the fluid friction boiler 100 is a device for heating fluid injected into the case 10 through a head 30 rotated at a high speed.

In detail, the case 10 may have a cylindrical shape, a cylindrical heating space c may be formed therein, and a case cover 12 may be coupled to the front surface of the case 10, .

An outlet 13 is formed through the inner and outer peripheries of the side surface portion 13 so as to discharge the heated fluid to one side of the cylindrical side surface portion 11.

Here, the case 10 is preferably made of a material such as metal or reinforced plastic that can withstand high-speed rotation. At this time, the fluid may be water, brine, water vapor, thermal oil, or the like, and various kinds of media may be used in a liquid or gaseous state.

When the fluid to be heated is water, brine, water vapor or the like, the material of the case 10 may be made of a material having high strength such as stainless steel or reinforced plastic and resistant to corrosion, In case of oil, it may be made of steel.

In addition, the case 10 is preferably sealed so that fluid supplied to the inside of the case 10 is not leaked. The inlet 14 may be connected to a pump or a fluid storage tank for supplying fluid, and the outlet 13 ) Can be connected to piping for heating or hot water supply.

The rotation driving shaft 20 coupled with the motor is passed through the case 10 to be connected to the heating space c, And may be connected to the arranged head 30 by a key coupling or the like, and may transmit a rotational force for rotating the head 30.

The head 30 is disposed in the cylindrical heating space c in the case 10 and heats the fluid introduced through the inlet 14 during rotation. Here, the head 30 includes an outer end body portion 40 and an inner end body portion 50.

At this time, it is preferable that the rotation center line of the head 30 and the rotation center line of the rotation drive shaft 20 are aligned with the center line of the heating space c. Friction wings (40b, 50b) project along the circumferential direction on the outer circumference of each of the body portions (40, 50) and can be projected in multiple stages along the longitudinal direction.

It is preferable that the outer end frustum portion 40b and the outer end frustum portion 40b protruding from the outer periphery of the outer end portion body 40 are integrally formed through a rotation process, 50 and the inner end frictional wing portion 50b protruding from the outer periphery of the inner end body portion 50 are also integrally formed.

The head 30 may be formed of stainless steel, reinforced plastic, or the like when the fluid is water, brine, water vapor, or the like, and may be made of steel or the like when the fluid is oil.

Referring to FIG. 2, the outer end body portion 40 is formed with an opening 43 disposed at one side thereof so as to face the inlet 14, a receiving space d formed therein, A motor connection portion 41 connected to the motor (not shown) is formed.

Specifically, the outer end body portion 40 may be provided in a cylindrical shape with one side thereof being opened. An opening 43 having a circular cross section is formed at one side of the side wall portion forming the cylindrical periphery, and a motor connection portion 41 may be formed.

The motor connection part 41 is formed with a key groove 41a to which a rotary drive shaft 20 connected to transmit the rotational force of the motor is key-engaged. The motor connection part 41 and the rotary drive shaft 20 are integrally formed And the head 30 can be rotated by the rotation of the motor.

It is preferable that the portion through which the rotary drive shaft 20 passes through the case 10 is sealed so that fluid does not leak. It is preferable that such a seal does not interfere with the rotation of the rotary drive shaft 20.

For this purpose, it is preferable that a bearing through which the case 10 is passed is provided with a bearing which is in contact with the outer periphery of the rotary drive shaft 20 and a sealing member for preventing leakage of the fluid in the heating space c.

Here, the sealing member is preferably arranged to partition the heating space (c) and the bearing so as to prevent the lubricant of the bearing from being removed by the fluid when the fluid is water, brine or steam, and to prevent the bearing from breaking.

A cover portion 40c having an inlet hole 46 communicating with the inlet port 14 is coupled to the opening 43 of the outer end body portion 40. The outer periphery of the cover portion 40c The case 10 is provided with a bearing 17 for rotatably supporting the outer periphery of the outer end body portion 40 when the head 30 rotates is provided at a position facing the outer periphery of the side end portion of the outer end side body portion 40, May be provided.

Accordingly, vibration during rotation of the outer stage body portion 40 can be minimized, and damage to the rotary drive shaft 20 due to vibration can be prevented.

In this case, when the fluid is oil, a general bearing may be used. In the case where the fluid is water, seawater, steam, or the like, a ceramic bearing is preferably used.

Of course, the bearing 17 is formed with a support tube portion at the rim of the inlet hole 46 of the cover portion 40c so as not to be in contact with the fluid inside the heating space c, (14). At this time, a sealing member is interposed in the rear portion of the bearing 17 to seal the fluid in the heating space (c) so as not to flow to the bearing (17) side.

Meanwhile, the inner end body portion 50 is disposed inside the accommodation space d, and is coupled to the outer end body portion 40 so as to be integrally rotated. The inner end body portion 50 may be formed in a cylindrical shape having open front and rear surfaces and a rear end portion 52 may be formed on the front surface of the motor connection portion 41 of the outer end body portion 40 Can be combined.

The rear end frame 52 and the motor connection portion 41 of the inner end body portion 50 may be connected by a key coupling or the like and the inner end body portion 50 may be connected to the outer end body portion 40, As shown in Fig.

The cover 40c may be coupled to the opening 43 so as to be integrally rotated with the outer end body 40. [ That is, the cover portion 40c may partly cover the opening 43, and the inlet hole 46 may be disposed at the center of rotation of the cover portion 40c.

At this time, the front edge 51 of the inner end body portion 50 may be coupled to the rear surface of the cover portion 40c. Accordingly, the front end portion and the rear end portion of the inner end body portion 50 are coupled to the outer end body portion 40 so as to be integrally rotated, and the front and rear end portions are supported by the outer end body portion 40 Thereby minimizing vibration during rotation.

The fluid may be introduced into the inner space e of the inner end body portion 50 through the inlet 14 and the inlet hole 46.

On the other hand, friction wings 40b and 50b are formed on the outer circumference of the body portions 40 and 50 along the circumferential direction. The friction wings 40b and 50b are formed on the outer surfaces of the body portions 40 and 50, And the protruding portions are partitioned by the ring-shaped water-storing grooves 47,

At this time, the outer short end stop groove portion 47 is disposed between the outer end frictional wing portions 40b and the inner end end stop groove portion 57 may be disposed between the inner end frictional wing portions 50b.

Each of the water storage grooves 47 and 57 forms a step between the circumferential surface of each of the friction wings 40b and 50b and the outer circumferential surface of each of the body portions 40 and 50, , 50b and the fluid can be increased.

Further, the respective reservoir depressions 47 and 57 can increase the amount of fluid that can be accommodated in the heating space (c), and even if a case or a head of the same size is used, a larger amount of fluid can be heated at one time The heating rate of the fluid can be improved.

Further, each of the water storage grooves 47 and 57 forms a velocity difference between the fluids, thereby promoting the turbulent flow of the fluid contained in the heating space. The fluid in contact with the head 30 such as the fluid contacted with each of the friction blades 40b and 50b and the outer periphery of each of the body portions 40 and 50 Shear stress is directly transmitted from the outer surface, and it can flow quickly.

On the other hand, the fluid remote from the head (30) is transferred from the outer surface of the head (30) to the head (30) with a low shear stress. As the fluid that is rapidly flowing and the fluid that slowly flows are rotated in the state of forming laminar flow, a turbulent flow of fluid can be formed within the water storage grooves 47, 57.

As a result, the frequency of friction between the fluid molecules is increased, friction between the fluid and the head / case can be promoted, and the fluid temperature can be quickly raised by the smooth friction heating.

The term " friction heating " refers to heat generated from friction or impact between fluid molecules, heat due to bubble formation and rupture due to acceleration / decompression and deceleration / pressure increase of fluid, collision between fluid and head / case, And the like.

Since the reservoir grooves 47 and 57 between the frictional wings 40b and 50b form a velocity difference between the fluids to promote the turbulent flow, the heated fluid and the unheated fluid can be rapidly mixed, (c) Since the temperature deviation in each part of the fluid accommodated therein is reduced, the temperature of the fluid discharged through the outlet after heating can be accurately adjusted according to the number of revolutions of the head, so that the heating quality of the product can be improved.

Furthermore, it is possible to minimize the vibration of the head during rotation of the head, which may be caused by the temperature variation of the fluid in the heating space, and to quickly mix the heated high temperature fluid and the unheated low temperature fluid, Thereby minimizing the possibility of heat loss of the high temperature fluid and reducing the energy loss in the convection / conduction of the fluid due to temperature variations, thereby improving the heating efficiency of the product.

The friction wings (40b, 50b) are formed so that the friction protrusions (48, 58) and the friction grooves (49, 59) are sequentially arranged along the circumferential surface. That is, the friction protrusions 48 and 58 and the friction grooves 49 and 59 are repeatedly formed on the outer circumference of one of the friction wings 40b and 50b along the circumferential direction. The friction grooves 49 and 59 are semicircular .

Here, the number of the friction protrusions 48 and 58 may be 10 or more, and preferably 12 or more for rapid heating of the fluid. The friction wings 40b and 50b protruding from the body portions 40 and 50 may be provided with different numbers of friction protrusions 48 and 58, respectively.

For example, the outer end frictional wing portion 40b may be provided with twelve friction protruding portions 48, and the inner end frictional wing portion 50b may be provided with ten friction protruding portions 58. [

The frictional wing portions 40b and 50b may increase frictional force with the fluid through the frictional groove portions 49 and 59 and the fluid may flow through the friction wing portions 40b and 50b in the rotational direction R As shown in Fig.

Since the friction protrusions 48 and 58 and the friction grooves 49 and 59 are sequentially disposed, the fluid is compressed in a narrow space on the circumferential surface side of the friction protrusions 48 and 58, and the friction grooves 49 and 59 The fluid can be expanded in a wide space on the circumferential surface side.

By repeating such compression and expansion of the fluid, the momentum of the fluid molecule is increased, and the frequency of friction between the fluid molecules is increased, so that the self-heating of the fluid can be promoted.

As described above, the fluid in the heating space (c) is not indirectly heated by the combustion of the chemical fuel or the resistance heating of the heating wire, but is heated indirectly by heat of the bubbles decomposed due to acceleration / decompression and deceleration / And self-heating due to heat generated by friction between the fluid molecules, thereby providing a high heating efficiency.

The friction wings 40b and 50b are formed with discharge holes 44 and 54 passing through the friction protrusions 48 and 58, respectively. The outer end discharge hole 44 formed in the outer end frictional wing portion 40b can communicate the inside and the outside of the outer end body portion 40. The inner end frictional wing portion 50b The inner end discharge hole 54 can communicate the inside and outside of the inside end body portion 50.

At this time, it is preferable that a plurality of the discharge holes 44 and 54 are radially formed along the respective friction protrusions 48 and 58.

Specifically, the fluid flows into the inner space e of the inner-end body portion 50 via the inlet 14 and the inlet hole 46, and the inner space e And the fluid may be discharged to the inner circumferential surface side of the outer end body portion 40 through the inner end discharge hole 54 through centrifugal force.

The fluid discharged to the inner circumferential surface of the outer end body portion 40 is discharged together with the rotation of the inner end friction wing portion 50b so that the fluid is rotated in the rotation direction R of the head 30, And can be discharged to the inner peripheral surface side of the portion (40).

At this time, the fluid collides with the inner circumferential surface of the outer end body portion 40 to generate heat, is rotated along the inner circumference of the outer end body portion 40, passes through the outer end discharge hole 44, 10).

The fluid discharged to the inner circumferential side of the case 10 may also be rotated along the inner circumference of the case 10 because the fluid is discharged along with the rotation of the outer end frictional wing 40b.

At this time, the fluid passing through each of the discharge holes 44 and 54 is compressed and introduced into the narrow discharge holes 44 and 54 by a centrifugal force in a wide space, and flows outwardly of the discharge holes 44 and 54 Can be discharged. Here, the maximum flow rate of the fluid increases with the number of revolutions per hour of the motor, and as the fluid velocity increases, the fluid pressure decreases.

When the flow velocity drops below the vapor pressure, cavitation occurs at the maximum flow velocity point, bubbles are formed in the fluid, and when the fluid pressure reaches a point at which the flow velocity decreases, bubbles are imploded and a large amount of energy is released. Can be increased.

The fluid that has passed through the inner end discharge hole 54 collides with the inner periphery of the outer end body portion 50 and the fluid that has passed through the outer end discharge hole 44 flows into the inner periphery And the molecular motion inside the fluid is increased. As a result of the turbulent flow induced by the collision, the friction between the fluid molecules is promoted and the friction heating of the fluid can be promoted.

As such, the fluid passes through the inner end discharge hole 54 and the outer end discharge hole 44 and is discharged through the formation of the bubble and the inner wave, and is discharged through the collision with the outer end body portion 40 and the case 10 And the heating speed of the product can be remarkably improved since the multi-step heating process is performed until the fluid introduced into the inlet 14 flows to the outside of the head 30. [

That is, the region heated by the bubble formation and the inner wave expands to the region between the inner end discharge hole and the outer end body portion and between the outer end discharge hole and the case, so that the fluid can be heated at a very high speed.

In addition, since the fluid discharged from each discharge hole collides with the outer end body portion and collides with the inner circumference of the case in multiple steps, the momentum of the fluid molecules remarkably increases, thereby friction heating between the fluids accelerates friction heating. The heating rate can be improved.

The outer end of the inner end discharge hole 54 and the outer end discharge hole 44 may be branched by polygalrays and the shape of each discharge hole may be different from that of adjacent discharge holes.

Of course, it is also possible that the shape of the inner end discharge hole and the shape of the outer end discharge hole are different from each other. Accordingly, when the fluid discharged along each of the discharge holes is ejected from the outer end body portion to the inner periphery of the case, it can have a high molecular momentum through interaction with the fluid ejected from the adjacent ejection holes.

In addition, when a fluid having a high molecular momentum collides with an outer end body portion or a case, and when a fluid collides with each other, a high energy is ejected, so that the frictional heating of the fluid can be performed more smoothly.

A plurality of friction ribs 45 and 55 are provided along the longitudinal direction on the inner circumferential surface of each of the body portions 40 and 50. The friction ribs 45 and 55 are formed on the inner circumferential surfaces of the body portions 40 and 50, 50 in the circumferential direction.

An inner end frictional rib portion 55 may be formed on the inner circumference of the inner end body portion 50 and an outer end frictional rib portion 45 may be formed on the inner circumference of the outer end body portion 40. [ have.

At this time, the fluid is rotated through friction with the inner circumferential surfaces of the respective body portions 40 and 50, and is pressed to the inner circumferential side of the body portions 40 and 50 through the centrifugal force, Can be discharged.

The frictional force between the inner circumference of each of the body portions 40 and 50 and the fluid is increased through the friction ribs 45 and 55, so that the fluid can be smoothly rotated.

In addition, the friction ribs 45 and 55 increase the frequency of friction between the fluid molecules through the turbulent flow generated in the collision with the fluid being pressed and rotated along the inner periphery of the respective body portions 40 and 50, Friction heating can be promoted.

Since each of the friction ribs 45 and 55 is difficult to be integrally formed during the rotation of the body portions 40 and 50, the body portions 40 and 50 may be formed by welding or the like. At this time, the friction ribs 45 and 55 may have a rectangular cross-section, and may be linearly formed along the longitudinal direction of the body portions 40 and 50. Of course, the frictional force with the fluid can be further increased when it is provided in a meandering shape.

As the head rotates, frictional heating occurs between the inner side frictional rib portion 55 and the fluid at the inner periphery of the inner end body portion 50, and the outer end frictional rib portions 45 and 45 at the inner periphery of the outer end body portion 40, Frictional heating between fluids can be achieved.

Since the fluid flowing into the inlet 14 flows to the outside of the head 30 and is subjected to a multistage heating process from the inner circumference of the case 10 to the friction rib heating with the case rib 16, The heating rate can be remarkably improved.

Thus, even if water vapor or vapor having a very low viscosity is used for the fluid to be heated, frictional heating of the fluid can be smoothly performed, and the application range of the product can be increased by diversification of the fluid to be heated.

Further, since the heating range can be extended to the temperature at which the fluid is phase-changed by the multistage heat generation, the product can be utilized in a wide variety of applications.

At least one of the front and rear ends of the body portions may include a dummy frictional wing portion 42 having no through hole formed therein.

At this time, the dummy friction wing 42 prevents the head 30 from being excessively vibrated due to the repulsive force between the fluid ejected through the ejection hole and the case 10, and vibrates the head 30 ) Is prevented from breaking.

The dummy friction wing portion may include a flow through hole passing through both side surfaces in the circumferential direction of the rubbing projection portion and a centrifugal discharge hole branched radially outward from the flow through hole and passing through the circumferential surface of the rubbing projection portion .

At this time, the fluid on the facing surface in the rotational direction of the friction protruding portion flows into the flow through hole by the rotational force of the body portion, is accelerated / decompressed, is discharged to the outside of the flow through hole, and can be decelerated / boosted.

Accordingly, the bubbling process is progressed in accordance with bubble formation and deceleration / pressure increase due to acceleration / decompression of the fluid, and the fluid can be heated.

Further, the fluid flowing along the flow through hole may be discharged to the inner circumferential side of the case by the centrifugal force at the point where the centrifugal discharge hole is branched. The fluid discharged to the inner circumferential side of the case flows along the rotational direction of the body portion and can generate heat energy.

In this case, the diameter of the centrifugal discharge hole is preferably smaller than the diameter of the flow through hole.

It is preferable that the arrangement of the dummy friction wings of the inner end body portion 50 is different from the arrangement of the dummy friction wings 42 of the outer end body portion 40.

For example, one of the dummy friction wings may be disposed at the front portion and three dummy friction wings may be disposed at the rear portion of the outer end body portion 40. In the inner end body portion 40, Three in the rear portion, and one in the rear portion.

That is, some of the friction wings having the discharge holes formed in the inner end body portion 50 may be arranged to face the dummy friction wings of the outer end body portion 40. At this time, the fluid having passed through the discharge hole arranged to face the dummy friction wing portion of the outer end body portion (40) in the inner end body portion (50) passes through the inner side of the dummy friction wing portion of the outer end body portion So that a longitudinal flow can be formed between the outer end body portion 40 and the inner end body portion 50.

Accordingly, the fluid discharged to the outside of the inner end body portion 40 flows smoothly along the respective discharge holes without being stagnated between the outer end body portion 40 and the inner end body portion 50 .

The friction protrusions 48 and 58 preferably include high-end protrusions 48a and 58a and low-end protrusions 48b and 58b, which are arranged alternately along the circumferential direction with their height adjusted. That is, the friction wings 40b and 50b are repeatedly formed in the order of the high-end protrusions 48a and 58a, the friction grooves 49 and 59, the lower end protrusions 48b and 58b, and the friction grooves 49 and 59 .

The high end projections 48a and 58a project from the outer periphery of each of the body portions 40 and 50 at a high step and the lower end projections 48b and 58b project from the outer periphery of each of the body portions 40 and 50, Lt; / RTI >

The fluid passing through the discharge hole of the high-end projection 48a flows at a high speed to a position close to the inner periphery of the case 10 because the flow rate of the fluid passing through the discharge hole is decreased as the distance from the end of the discharge hole is reduced The fluid which has collided with the case 10 and has passed through the discharge hole of the lower end projection 48b can be decelerated at a position farther from the inner periphery of the case 10. [

As a result, the collision between the inner circumference of the case 10 and the fluid ejected from the discharge hole can be generated intermittently at a constant time interval, so that the wear of the case 10 due to the continuous collision with the fluid The damage and fracture phenomenon can be minimized and the durability of the product can be improved.

Since the fluid that rotates along the outer periphery of the friction wing portions 40b and 50b passes through the interval where the fluid is changed in three stages by the high end projections 48a and 58a and the bottom end projections 48b and 58b, The flow rate changes through expansion and contraction are diversified, the turbulent flow of the fluid is further promoted, and the friction frequency and collision frequency between fluid molecules can be increased.

The discharge holes 44 and 54 formed in the high-end projections 48a and 58a and the low-end projections 48b and 58b may be linearly extended from the rotation center in a radial direction, The discharge holes 44 and 54 are provided for improving the heating efficiency of the bubbles through the deceleration through the deceleration, promoting the turbulent flow through interaction between the discharged fluids, promoting frictional heat through collision of the discharged fluid and the high- It is preferable that the outer end of the electrode be formed so as to be branched by polygalrays.

The rim 44a of each of the discharge holes 44 may be tapered so as to be gradually inclined toward the outer circumferential side so as to rapidly decelerate the fluid through promotion of expansion of the fluid to minimize wear damage of the case 10. [

A screw groove 44b may be formed in the inner periphery of each of the discharge holes 44 so that the discharged fluid is guided and discharged in a spiral flow. Accordingly, the flow velocity of the fluid passing through the discharge hole 44 can be further increased, and bubble formation and rupture through cavitation can be performed more smoothly.

On the other hand, a first impeller portion 60 is formed on the rear surface of the cover portion 30c to form a first vortex f so that the fluid is sucked into the inner space e of the inner end body portion 50 . The first impeller portion 60 may have a diameter smaller than a front edge of the inner end body portion 50.

The first impeller portion 60 may be rotated together with the outer end body portion 40 as the cover portion 40c is integrally rotated when the outer end body portion 40 rotates. The first impeller portion 60 includes a hub having a through hole 61 communicating with the inlet hole 46 and a blade 62 slantingly projected along the outer periphery of the hub Do.

In detail, the blade 62 of the first impeller portion 60 protrudes radially outward along the outer periphery of the hub, and protrudes at a lower step toward the outer end, and is inclined toward the direction opposite to the rotation of the head 30 .

At this time, the blade 62 of the first impeller 60 rotates clockwise from the rear surface of the cover portion 40c toward the inner space e of the inner bottom body portion 50 during rotation, 1 vortex (f).

Of course, when the fluid for heating is filled, the first vortex f may be formed in the filled fluid. If the fluid for heating is not filled, the air in the inner space e of the inner end body portion 50 A spiral airflow can be formed.

At this time, the first vortex f is directed toward the rear side of the inner end body portion 50 and pressurizes the fluid toward the inner peripheral side of the inner end body portion 50 to lower the pressure on the side of the through hole 61 of the hub , The fluid on the side of the inlet 14 can be sucked into the side of the through-hole 61 by the lowered pressure.

The fluid sucked by the first vortex (f) may be joined to the spiral flow and rotated along the inner periphery of the inner end body portion (50). At this time, the fluid, which is rotated along the inner periphery of the inner end body portion 50, flows along the inner end discharge hole 54 with the pressing force of the spiral flow and the centrifugal force through the rotation of the inner end body portion 50, And may be discharged to the inside of the outer end body portion 40.

At this time, the fluid discharged to the inner circumferential side of the outer tier body portion 40 is heated when it collides with the inner circumferential surface of the outer tier body portion 40, and is rotated along the inner circumference of the outer tier body portion 40, .

The fluid that is rotated along the inner periphery of the outer end body portion 40 may be discharged to the inner circumferential side of the case 10 along the outer end discharge hole 44 by centrifugal force. At this time, the fluid discharged to the inner circumferential side of the case 10 collides with the inner circumferential surface of the case 10, generates heat, and is rotated along the inner circumference of the case 10 to generate frictional heat.

A second impeller portion 70 is formed on the front surface of the motor connection portion 41 to form a second vortex g flowing in a direction opposite to the first vortex f formed on the first impeller portion 60 .

The second impeller portion 70 includes a hub coupled to the motor connection portion 41 and a blade 72 disposed obliquely with respect to the hub. The bolt 71 passes through the hub, And may be coupled with the rotary drive shaft 20 and rotated in the same rotation direction R of the outer end body portion 40.

The blade (72) of the second impeller portion (70) protrudes radially outward along the outer periphery of the hub, and protrudes as a lower step toward the outer end, and is inclined toward the direction opposite to the rotation of the head .

In detail, the blade 72 of the second impeller portion 70 rotates in a counterclockwise direction from the front surface of the motor connecting portion 41 to the rear side of the cover portion 40c when the second vortex g ).

At this time, the first vortex f and the second vortex g lower the pressure at the center of rotation of the inner space e to suck the fluid into the inner space e, No pump is required, and rotation of the head 30 and suction of the fluid can be made at a time.

The first impeller portion 60 and the second impeller portion 70 disposed opposite to the inner side of the head 30 can move the fluid from the rotation center of the inner space e to the inner circumferential side of the inner end body portion 50 The hydraulic pressure in the center of rotation is reduced, and the fluid is sucked into the inner space (e). Therefore, a separate pump for supplying the fluid is not required, which simplifies the device and improves the economics of the product.

In addition, the first vortex (f) and the second vortex (g) form a helical flow repulsive in directions opposite to each other and collide with each other, and generate friction frictional heat during impact. At the same time, the collision of two fluid flows repelling at the portion where the first vortex (f) and the second vortex (g) meet confronts a large number of turbulent flows, thereby increasing the frequency of friction between the fluid molecules, Can be promoted.

Furthermore, the first vortex (f) and the second vortex (g) can pressurize the fluid to the inner circumferential side of the inner-end body portion (50) together with the centrifugal force resulting from the rotation of the head (30).

Accordingly, even if the head 30 has the same number of revolutions per hour, the flow velocity of the fluid ejected through the ejection holes 44 and 54 can be increased, and the formation of bubbles and the inner wave are promoted, Can be significantly increased.

4 is a cross-sectional view of a fluid friction boiler according to another embodiment of the present invention. In this embodiment, the basic configuration except for that the inner-end body portion is rotatably supported inside the outer-end body portion is the same as that of the above-described embodiment, so a detailed description of the same configuration will be omitted.

As shown in FIG. 4, the outer circumference of the inner end body portion 250 is slidably supported inside the outer end body portion 260.

The outer circumferences of the front and rear end frames 251 and 252 of the inner end body portion 250 are supported by the bearings 262 and 263 provided in the cover portion 260c and the motor connection portion 261 of the outer end body portion 260 As shown in FIG.

When the fluid to be heated is a fluid such as a heating medium oil or a vapor, the bearings 262 and 263 may use a general bearing. In the case of a fluid such as water, brine or water vapor, a ceramic bearing or bimetallic bearing is preferably used .

Since the ceramic bearing, the bimetallic bearing, and the like can be used without any separate lubricant, it is possible to efficiently support the body portions 250 and 260, which are rotated at a high speed, even if it is difficult to apply a lubricant using a fluid such as water or steam. .

Of course, a circular groove may be formed in the cover portion 260c and the motor connection portion 261 of the outer end body portion 260 and the front end portion 251 and the rear end portion 252 of the inner end body portion 250 may be formed in a circular groove. Through the groove-projection coupling in which the groove is inserted into the groove Without a separate bearing It is also possible that the inner end body portion 250 is sliced when the outer end body portion 260 is rotated.

Here, the term 'slice rotation' means that the inner end body portion 250 is not constrained by the outer end body portion 260 and is not integrally rotated, but the outer end body portion 260, when bearing coupling or groove- So that it rotates slowly in the same rotational direction as the outer-end body portion 260 due to the frictional force with the outer-end body portion 260. [

Accordingly, the inner end body portion 250 and the outer end body portion 260, which are housed between the outer periphery of the inner end body portion 250 and the inner periphery of the outer end body portion 260, The friction stir welding can be performed at a higher speed.

FIG. 5 is a cross-sectional view of a fluid friction boiler according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along line C-D of FIG. In this embodiment, the basic configuration except for the inner-end body portion is provided so as to rotate in a direction different from the outer-end body portion is the same as that of the above-described embodiment, so a detailed description of the same configuration will be omitted.

5 to 6, the fluid friction boiler multi-stage head includes an outer end body portion 360 and an inner end body portion 350. As shown in FIGS.

The outer end body portion 360 is formed with an opening at one side thereof and has a receiving space d formed therein. The outer end motor portion 330 is connected to the outer end motor shaft 330, which is unidirectionally rotated to the other end portion. (361) are formed.

The inner end body portion 350 is formed in the receiving space d and has an inner end motor connecting portion 351 connected to the inner end motor shaft 321 rotated in the other direction on one side.

A pair of motors M1 and M2 rotatable in different directions may be provided on one side and the other side of the case 310 and the motor M1 disposed on one side of the case 310 may be provided in the other direction R3 and the inner end motor shaft 321 may be connected to the inner end motor connecting portion 351 of the inner end body portion 350. [

The motor M2 disposed on the other side of the case 310 has an outer stage motor shaft 330 rotated in one direction R2 and the outer stage motor shaft 330 is coupled to the outer stage body 260, End motor connecting portion 261 of the motor.

Accordingly, the inner end body portion 350 and the outer end body portion 360 can be rotated in different directions.

Here, the inner end body portion 350 and the inner end motor shaft 321 may be connected by a flange connection pipe 320.

In detail, the flange connection pipe 320 is hollowed and has one end protruding in the radial direction so as to be flange-coupled with the inner end motor shaft 321, Lt; RTI ID = 0.0 > 251 < / RTI >

A hollow connection hole communicating with the inner hollow is formed at one side of the flange connection pipe 320 and a fluid chamber 323 provided at the end of the fluid inlet pipe 322 is disposed outside the hollow connection hole. At this time, the fluid injected through the fluid inlet pipe 322 may be filled in the fluid chamber 323, and the fluid may be introduced into the hollow through the hollow connection hole of the flange connection pipe 320, But may be injected into the internal space e of the body portion 350.

Meanwhile, the friction protrusions protruding from the outer circumference of the outer end body 360 may have a height different from that of the adjacent friction protrusions. The friction protrusions protruding from the outer circumference of the inner end body part 350 may be formed to have different heights. However, when the body parts 350, 360 are rotated in different directions, the body parts 350, So as not to generate excessive pressure or vibration.

Here, the number of the friction protrusions projecting on the outer circumference of the outer end body portion 360 and the number of the friction protrusions protruding from the outer circumference of the inner end body portion 350 may be twelve or more, respectively. Can be heated quickly.

Support end step portions 350a and 350b protruding radially outward to support the inner circumference of the outer end body portion 360 may be formed on the outer periphery of the front end portion and the rear end portion of the inner end body portion 350 .

The inner circumference of the front end portion of the outer end body portion 360 is supported by the front end support portion 350a of the inner end body portion 350, The jaw portion 350b is supported at the inner periphery of the rear end of the outer end body portion 360 to minimize the vibration of the body portions 350 and 360 far from the motor connection portions 351 and 361 during rotation of the respective body portions 350 and 360 .

At this time, friction supporting means such as a bearing or a friction reducing coating may be provided on the outer surfaces of the support stepped portions 350a and 350b. Of course, even if there is no separate friction reducing means, An oil film may be formed between the outer surface of the outer side body and the inner circumference of the outer side body portion to serve as a friction reducing means.

The supporting end stop 350a may be provided to support the outer end body 360, but may be stepped to minimize the contact area. A bearing groove may be formed on a front surface of the motor connection portion 361 of the outer end body portion 360. A rear portion of the inner end body portion 350 may be inserted into the bearing groove, A bearing protrusion for supporting a front surface of the motor connection portion of the inner casing body 360 and a rear surface of the inner casing body 350 to be spaced apart from each other may be formed.

Accordingly, the body portions 350 and 360 can be supported by the other body portion in order to reduce vibrations during rotation of the body portions 350 and 360 in a state where the contact area between the outer body portion 360 and the inner body portion 350 is minimized.

The fluid flowing in the space between the outer periphery of the inner end body portion 350 and the inner periphery of the outer end body portion 360 is in contact with the inner periphery of the outer end body portion 360, A fluid that is rotated in one direction along the inner rim body R2 and a fluid that is in contact with the outer rim of the inner rim body 350 and is rotated in the other direction R3 along the rotating direction of the inner rim body 350 .

At this time, the fluids rotating in different directions collide with each other to generate a high frictional heat with strong repulsive force, and a turbulent flow compressed at a high pressure can be formed between the fluid rotating in one direction and the fluid rotating in the other direction.

Accordingly, the molecules in the fluid can be vibrated rapidly with high kinetic energy, and the heating rate of the product can be remarkably improved by maximizing the heat generated by the collision and friction between the fluid molecules.

Meanwhile, a first impeller portion 370 may be provided on a rear surface of the inner end motor connecting portion 351 of the inner end body portion 350 to form a first vortex f for guiding the fluid to the rear side. A second impeller portion 380 for forming a second vortex g having a flow opposite to the first vortex f is formed on a front surface of the outer end motor connecting portion 361 of the outer end body portion 360, May be provided.

Here, the blade 372 of the first impeller portion 370 protrudes radially outward along the outer periphery of the hub having the through hole 371 formed therein, and protrudes as a lower step toward the outer end, And may be inclined toward the direction opposite to the rotation of the motor shaft 321.

At this time, the first impeller portion 370 is rotated in the other direction (R3) together with the inner end body portion 350 and is directed from the inner end motor connecting portion 351 toward the second impeller portion 270 side, Thereby forming a first vortex (f) rotating.

The blade 382 of the second impeller portion 380 protrudes radially outward along the outer periphery of the hub and protrudes to a lower step toward the outer end, As shown in Fig.

At this time, the second impeller portion 380 is rotated in one direction (R2) together with the outer end body portion 360 and is directed from the outer end motor connecting portion 361 toward the first impeller portion 370 side, The second vortex g is rotated.

That is, the first impeller portion 370 is rotated together with the inner end body portion 350, and the second impeller portion 380 is rotated together with the outer end body portion 360, Can be formed.

Accordingly, the first vortex (f) and the second vortex (g) collide with each other with a strong repulsive force, causing frictional heat of fluid at the time of collision, and a large number of turbulent flows are generated to increase the friction frequency between fluid molecules Friction heating of the fluid can be promoted.

The first vortex f and the second vortex g push the fluid from the center of rotation of the inner space e of the inner end body portion 350 to the inner circumferential side of the inner end body portion 350, The fluid pressure in the central portion can be reduced and the side of the through hole 371 of the hub can be depressurized and the fluid flowing into the flange connection pipe 320 can be sucked into the inner space e.

Accordingly, a separate pump for supplying fluid is not required, which makes it possible to improve the economics of the product by simplifying the device.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

100, 200, 300: Fluid friction boiler 10, 310: Case
13: outlet 14: inlet
16: Case rib 20: Rotary drive shaft
30: head 40, 260, 360: outer end body portion
50, 250, 350: Inner end body portion 40b, 50b: Friction wing
40c: cover part 41: motor connection part
42: dummy friction wings 44, 54: discharge hole
45, 55: Friction rib portion 47, 57:
48, 58: friction protrusions 49, 59:
48a, 58a: high-end protrusions 48b, 58b:
60, 370: first impeller portion 70, 380: second impeller portion

Claims

A fluid friction boiler multistage head for heating a fluid introduced as the fluid is connected to a motor in a cylindrical heating space inside a case having an inlet and an outlet,
A cylindrical outer end body portion having a housing space formed therein and having a motor connection portion connected to the motor at the other side thereof;
A cylindrical inner end body portion disposed inside the accommodation space and integrally rotated by being coupled to the outer end body portion; And
And a plurality of protrusions protruding in the circumferential direction on the outer circumference of each of the body portions, Wherein the friction protrusions and the frictional grooves are disposed in order along the respective circumferential surfaces of the protrusions and the discharge holes penetrating the friction protrusions are formed, A fluid friction boiler multi - stage head comprising:

A fluid friction boiler multistage head for heating a fluid introduced as the fluid is connected to a motor in a cylindrical heating space inside a case having an inlet and an outlet,
A cylindrical outer end body portion having a housing space formed therein and having a motor connection portion connected to the motor at the other side thereof;
A cylindrical inner end body portion disposed inside the accommodation space, the outer end body portion being supported to be slidly rotated around the outer periphery thereof; And
And a plurality of protrusions protruding in the circumferential direction on the outer circumference of each of the body portions, Wherein the friction protrusions and the frictional grooves are arranged in order along the respective circumferential surfaces of the protrusions and the discharge holes penetrating the friction protrusions are formed, A fluid friction boiler multi - stage head comprising:

A fluid friction boiler multi-stage head for heating an inflow fluid as it is connected to a motor and rotated in a cylindrical heating space inside a case,
A cylindrical outer end body portion having an opening formed at one side thereof and having a receiving space therein and an outer end motor connecting portion connected to an outer end motor shaft which is unidirectionally rotated at the other end portion;
A cylindrical inner end body portion disposed inside the accommodation space and having an inner end motor connecting portion connected to an inner end motor shaft rotatable in the other direction at one side portion; And
And a plurality of protrusions protruding in the circumferential direction on the outer circumference of each of the body portions, Wherein the friction protrusions and the frictional grooves are arranged in order along the respective circumferential surfaces of the protrusions and the discharge holes penetrating the friction protrusions are formed, A fluid friction boiler multi - stage head comprising:

4. The method according to any one of claims 1 to 3,
Wherein a plurality of friction ribs are provided along the longitudinal direction on the inner circumferential surface of each of the body portions, and each of the friction ribs is spaced apart from each other in the circumferential direction of the body portions.

4. The method according to any one of claims 1 to 3,
Wherein the friction protrusions include high-end protrusions and low-end protrusions that are alternately arranged along the circumferential direction with their height adjusted.