KR101861687B1 - blower head for fluid frictional heat boiler - Google Patents

Abstract

In order to increase the friction frequency between the fluids in the head for heating the fluid by the friction through rotation and to accelerate the turbulent flow to improve the heating speed of the fluid, the present invention is applied to a cylindrical heating space in a case equipped with fluid inlets and outlets A fluid friction heat boiler head for heating a fluid flowing in accordance with rotation of a motor, the fluid friction heat boiler head having an opening disposed at one side thereof and opposed to the inlet, wherein a receiving space is formed therein, A cylindrical body portion having a motor connection portion formed therein; And a plurality of protrusions formed on the outer circumference of the body portion in the circumferential direction and having a plurality of protrusions in the longitudinal direction of the body portion, the protrusions being partitioned by ring-shaped reservoir grooves, and the friction protrusions and the friction grooves And a frictional wing portion formed to be sequentially disposed and formed with a discharge hole communicating with the accommodation space through the rubbing projection portion.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fluid frictional heat boiler,

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

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 a need to provide a fluid frictional heat boiler head that increases the friction frequency between fluids in a head for heating fluid by rotation and promotes turbulent flow, thereby improving the heating speed of the fluid .

According to an aspect of the present invention, there is provided a friction frictional heating boiler head for heating a fluid flowing in a cylindrical heating space inside a case provided with a fluid inlet and an outlet, A cylindrical body portion having an opening disposed opposite to the inlet and having a receiving space therein and a motor connection portion connected to the motor at the other side; And a plurality of protrusions formed on the outer circumference of the body portion in the circumferential direction and having a plurality of protrusions in the longitudinal direction of the body portion, the protrusions being partitioned by ring-shaped reservoir grooves, and the friction protrusions and the friction grooves And a frictional wing portion formed to be sequentially disposed and formed with a discharge hole communicating with the accommodation space through the rubbing projection portion.

The cover includes a first impeller portion forming a first vortex so that the fluid is sucked into the accommodating space, and the motor connecting portion includes a first impeller portion, And a second impeller portion forming a second vortex of the flow opposite to the first vortex is preferably provided.

Preferably, a plurality of friction ribs are provided along the longitudinal direction on the inner circumferential surface of the body portion, and the friction ribs are spaced apart from each other in the circumferential direction of the body portion.

The rim of the discharge hole may be tapered, and a screw groove may be formed in the inner periphery of the discharge hole to induce a spiral flow of the fluid to be discharged.

The discharge hole includes an inner discharge hole connected to the accommodating space and vertically penetrating the circumferential surface of each of the friction protrusions, and a pair of inclined portions branched from both sides of the inner discharge hole and passing through the circumferential surfaces of the respective friction protrusions in an inclined manner And an auxiliary discharge hole is formed in the friction groove so as to communicate with the accommodation space, the auxiliary discharge hole passing through the friction blade.

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

First, since the fluid itself generates heat due to generation of heat during bubble decomposition due to acceleration / decompression and deceleration / pressure increase of fluid through rotation of the head disposed inside the heating space, and heat due to friction between fluid molecules, The amount of fluid that can be accommodated in the heating space is increased through the low-friction portion formed between each of the friction wings, so that a greater amount of fluid can be heated at a time, so that the heating speed of the product can be improved.

Second, the first impeller portion and the second impeller portion opposed to the inside of the body portion push the fluid from the rotation center of the accommodation space to the inner circumference side of the body portion and reduce the hydraulic pressure at the rotation center to suck the fluid into the accommodation space. A separate pump is not required and the economical efficiency of the product can be improved by simplifying the device.

Third, friction ribs formed in the inner periphery of the body portion rotated at a high speed can increase the frequency of intermolecular friction between the fluid and the frictional heating efficiency through collision with the fluid pressurized and rotated along the inner periphery of the body portion, The fluid inside and outside the head can be simultaneously heated together with the heating through the frictional wing portion and the case rib, so that the heating speed of the product can be remarkably improved.

Fourth, tapering is performed so that the rim of the discharge hole is tilted so as to promote the expansion of the fluid discharged through the discharge hole, thereby rapidly decelerating the fluid ejected from the discharge hole to the inner circumferential side of the case. Can be minimized and the durability of the product can be remarkably improved.

1 is a perspective view of a fluid frictional heat boiler head according to an embodiment of the present invention;
2 is a side view of a fluid frictional heat boiler according to one embodiment of the present invention.
3 is a cross-sectional view of a fluid frictional heat boiler according to an embodiment of the present invention.
4 is a cross-sectional view showing an AB section of Fig.
5 is an exemplary view showing an arrangement of a first impeller portion and a second impeller portion in a fluid friction heat boiler head according to an embodiment of the present invention.
6 is an exemplary view showing a fluid friction heat boiler head according to a second embodiment of the present invention.
7 is an exemplary view showing a fluid friction heat boiler head according to a third embodiment of the present invention.
8 is a cross-sectional view of a fluid friction boiler head according to a fourth embodiment of the present invention.

Hereinafter, a fluid friction boiler 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 frictional heat boiler head according to one embodiment of the present invention, FIG. 2 is a side view of a fluid frictional heat boiler head according to an embodiment of the present invention, and FIG. FIG. 4 is a cross-sectional view taken along the line AB of FIG. 2, and FIG. 5 is a cross-sectional view showing the arrangement of the first impeller and the second impeller in the fluid friction boiler head according to an embodiment of the present invention. Fig.

1 to 5, a fluid friction heat boiler blower 100 according to an embodiment of the present invention includes a case 10, a head 30, and a motor (not shown).

The fluid friction heat boiler blower 100 heats the fluid injected into the heating space c inside the case 10 through rotation of the head 30 rotating 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, have.

An outlet 13 is formed at one side of the cylindrical side portion 11 so as to pass through the inner and outer circumferential surfaces of the side portion 11 so as to discharge the heated fluid.

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 can be provided with an economic material having high strength such as 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 a cylindrical body portion 30a and a friction wing portion 30b.

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.

It is preferable that the cylindrical body portion 30a and the friction wing portion 30b are integrally formed through a rotary process. The head 30 may be made of stainless steel, reinforced plastic And may be made of steel or the like when the fluid is oil.

2 to 3, the body 30a has an opening 33 formed at one side thereof to be opposed to the inlet 14, and an accommodation space d in which the fluid is accommodated And a motor connecting portion 31 connected to the motor (not shown) is formed on the other side portion.

In detail, the body portion 30a may have a cylindrical shape with one side opened. The body portion 30a has an opening 33 having a circular cross-section at one side of the side wall portion forming the cylindrical periphery, and a motor connection portion 31 is formed at the other side of the side wall portion. Can be formed.

The motor connecting portion 31 is formed with a key groove 31a to which a rotary driving shaft 20 connected to transmit the rotational force of the motor is keyed. The motor connecting portion 31 and the rotary driving shaft 20 are integrally formed And the head 30 can be rotated by the rotation of the motor.

It is preferable that the portion 15 through which the rotary drive shaft 20 penetrates 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.

The case 10 may be provided with a bearing 17 that rotatably supports the body 30a when the body 10 is rotated with respect to the outer periphery of the side surface of the body 30a. Accordingly, vibration during rotation of the body 30a 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.

The friction wing portion 30b extends along the circumference of the body portion 30a in a circumferential direction and is provided in multiple stages along the longitudinal direction of the body portion 30a, (37).

Here, the friction wing portion 30b is formed in 11 stages as an example. However, as the number of stages of the friction wing portion 30b increases, the heating efficiency and the heating speed with respect to the power consumption can be improved.

The gap between the friction wings 30b is defined by a ring-shaped water-storing groove 37 for mixing and storing the fluid.

The ring-shaped water-storing groove portion 37 forms a step between the circumferential surface of the friction wing portion 30b and the outer circumferential surface of the body portion 30a to increase the contact area between the friction wing portion 30b and the fluid . As a result, the fluid can flow more smoothly when the head 30 rotates.

Further, the ring-shaped water-storing groove portion 37 can increase the amount of fluid that can be accommodated in the heating space c, and even if a case or head of the same size is used, a larger amount of fluid can be heated at one time, The efficiency can be improved.

Also, the ring-shaped water-storing groove portion 37 can form a velocity difference between the fluids to promote turbulent flow of the fluid accommodated in the heating space c.

The fluid in contact with the head 30 such as the fluid in contact with the circumferential surface or the front / rear surface of the friction wing 30b and the outer periphery of the body 30a (the bottom surface of the low watertight portion) , Shear stress is directly transmitted from the outer surface of the head 30 and can be rapidly flowed.

On the other hand, the fluid received in the water reservoir 37 separated from the head 30 receives a lower shear stress as it moves away from the outer surface of the head 30 and flows slowly. That is, the fluid separated from the outer surface of the head 30 flows by the viscosity with the fluid flowing by the head 30, so that it has a flow or flow rate slower than the fluid contacted with the head 30.

The turbulent flow of the fluid can be formed in the reservoir 37 as the fluid that is rapidly flowing and the fluid that slowly flows are rotated in a state of forming laminar flow.

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 37b between the frictional wings 30b forms a velocity difference between the fluids to promote the turbulent flow, the heated fluid and the unheated fluid are rapidly mixed. Therefore, the temperature difference of the fluid received in the heating space 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.

Referring to FIG. 4, each of the friction wings 30b is formed so that the friction protrusions 38 and the friction grooves 39 are sequentially disposed along the respective circumferential surfaces. That is, on the outer circumference of one frictional wing portion 30b, the frictional projection portion 38 and the frictional groove portion 39 are repeatedly formed along the circumferential direction. Here, the friction groove portion 39 may be formed in a semicircular shape.

Specifically, the friction wing 30b may be integrally formed with the body 30a and may be rotated together with the head 30 when the head 30 is rotated. At this time, the frictional force with the fluid can be increased at the circumferential surface of the friction wing portion 30b through the friction groove portion 39, and the fluid can be smoothly rotated in the rotating direction of the friction wing portion 30b have.

Since the friction protrusions 39 and the friction protrusions 38 are sequentially disposed, the fluid is compressed in a narrow space between the friction protrusions 38 and the inner circumference of the case 10, and the friction grooves 39, And the inner circumference of the case (10).

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.

Further, the amount of fluid that can be accommodated in the heating space (c) can be increased through the water receiving groove (37) formed between the respective friction wings (30b) to heat a larger amount of fluid at one time, .

Furthermore, since the water storage groove portion 37 between the friction wing portions 30b forms a velocity difference between fluids to promote the turbulent flow, the high-temperature and low-temperature fluids are rapidly mixed together with the inter-fluid friction frequency, Rapid heating is possible, the rotational speed of the head 30 and the temperature after heating the fluid can be precisely matched, and the heating quality of the product can be improved.

The frictional protrusions 38 are formed on the inner circumferential surface of the head 30 so as to prevent the frictional protrusions 38 from rotating at high speed when the head 30 rotates at a high speed. The frictional groove portion 39 may be formed to have a shallower depth than the depth of the water storage groove portion 37 because the motor may be overloaded during rotation due to excessive frictional force.

The number of the friction protrusions 38 and the number of the frictional grooves 39 are 10 in the circumferential direction of the friction wing 30b. However, when the number of the friction protrusions 38 is 12, Were optimized through experiments.

The friction wing portion 30b is formed with a discharge hole 34 penetrating the friction projection portion 38 and communicating with the accommodation space d.

That is, the discharge hole 34 connects the friction protruding portion 38 and the body portion 30a so as to connect the cylindrical accommodating space d in the body portion 30a and the heating space c outside the body portion 30a, (30a).

At this time, the discharge holes 34 may be formed in a plurality of ridges along the circumferential direction of the friction wings 30b, and may be formed in the respective friction protrusions 38.

The fluid flows into the accommodation space d through the inlet 14 and the opening 33 and flows along the discharge hole 34 through the centrifugal force in accordance with the rotation of the body 30a, (38). ≪ / RTI >

The fluid discharged to the outside of the circumferential surface of the friction protruding portion 38 is discharged together with the rotation of the friction protruding portion 38. Accordingly, the fluid is rotated in the rotational direction R of the head 30, .

At this time, the fluid discharged to the inner circumferential surface of the case 10 generates heat when it collides with the inner circumferential surface of the case 10, and is rotated along the inner circumference of the case 10 to generate frictional heat.

In addition, a turbulent flow is formed in the periphery of the case 10 due to the collision between the fluid and the inner circumferential surface of the case 10, whereby friction and collision between fluid molecules can be promoted.

The fluid that has passed through the discharge hole 34 and discharged to the outside of the body portion 30a in the accommodation space d of the body portion 30a has a narrow discharge hole (34), and can be discharged to the outside of the body (30a) in a state of having a high flow rate.

At this time, the flow velocity of the fluid deviating from the discharge hole 34 is maintained to a certain distance, but becomes slow as the fluid expands and spreads. Here, the maximum flow rate of the fluid increases with the number of revolutions per hour of the motor.

When the velocity of the fluid increases, the pressure of the fluid decreases. When the velocity of the fluid drops below the vapor pressure, cavitation occurs at the maximum flow velocity point and bubbles are formed inside the fluid. When the pressure of the fluid increases at the point where the flow velocity decreases, the bubbles are imploded and a large amount of energy is released, thereby increasing the temperature of the fluid.

Each of the discharge holes 34 may be formed to have one flow path linearly to the circumferential surface of the friction wing 30b along the tangential direction of the outer circumference of the accommodation space d, It is more preferable that the outer side is branched so that a plurality of through portions are formed on the circumferential surface of the outer tube 38 so as to have a flow path of the polygalle .

That is, each of the discharge holes 34 has an inner discharge hole 34a connected to the accommodation space d and vertically penetrating the circumferential surface of each of the friction projections 38, And a pair of inclined discharge holes 34b which are sloped with respect to the circumferential surface of each of the friction protrusions 38. As shown in FIG.

In detail, the fluid in the accommodation space (d) flows into the inner end of the inner discharge hole (34a) and is branched to the polygalle at the connection point of the inclined discharge hole (34b) and the inner discharge hole (34a) And is discharged to the peripheral surface of the friction projection portion 38 through the pair of inclined discharge holes 34b and the outer ends of the internal discharge holes 34a.

At this time, since the inclined discharge hole 34b obliquely discharges the fluid into the space between the case 10 and the head 30, the fluid ejected from the inclined discharge hole in the rotational direction side of one friction projection portion 38 Is in collision with the fluid ejected from the slant discharge hole on the opposite side of the rotation direction of the other friction protrusion.

The fluid discharged along the inclined discharge hole 34b can be rapidly decelerated forcibly during collision in a state of high energy, and the energy released through the inner wave of the bubble can be increased. Thus, the heating efficiency of the fluid can be increased.

In addition, as the fluids ejected from the respective inclined discharge holes 34b collide with each other, a turbulent flow is formed at the collision point, so that the frictional heating of the fluid can be further promoted.

At this time, the fluid discharged through the inner discharge hole 34a may impart additional rotational force to the fluid between the case 10 and the head 30. [ Accordingly, the speed at which the fluid between the case 10 and the head 30, through which the turbulent flow is discharged through the inclined discharge holes 34b, can be increased, and the heat generated upon collision with the case rib 16 It can be performed more smoothly.

At least one of the front and rear ends of the body 30a of the friction wing portion 30b may include a dummy friction wing portion 32 through which the discharge hole 34 is not formed. desirable.

The number of the dummy friction wings 32 disposed at the front end and the rear end of the body 30a may be determined according to the total number of the friction wings 30b.

In detail, the number of the dummy friction wings 32 disposed at the front end of the body 30a is set to 5% to 15% of the total number of the friction wings 30b, It is preferable that the number of the dummy friction wings 32 disposed at the rear end of the friction wings 30a is set to 25% to 35% of the total number of the friction wings 30b.

That is, when the total number of the friction wings 30b is 11, the dummy friction wings disposed at the front end portion of the body portion 30a have one, and the dummy friction wings 3 disposed at the rear end portion have three May be provided.

At this time, the dummy friction wing portion 32 prevents the body portion 30a from being excessively vibrated due to the repulsive force between the fluid ejected through the discharge hole 34 and the case 10, Thereby preventing the body portion 30a from being broken.

The dummy friction wings 32 are formed with flow through holes 32f passing through both side surfaces in the circumferential direction of the friction projections 38 and radially outwardly from the flow through holes 32f to form the friction projections 38 And a centrifugal discharge hole 32g passing through the circumferential surface of the discharge hole 32g.

At this time, the fluid on the facing surface in the rotating direction of the friction protruding portion 32 flows into the flow through hole 32f by the rotational force of the body portion, is accelerated / decompressed, and is discharged to the outside of the flow through hole 32f It 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.

The fluid flowing along the flow through hole 32f may be discharged to the inner circumferential side of the case by the centrifugal force at the point where the centrifugal discharge hole 32g 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.

At this time, the diameter of the centrifugal discharge hole 32g is preferably smaller than the diameter of the flow through hole 32f.

It is preferable that a plurality of case ribs 16 are formed on the inner circumferential surface of the case 10. The case ribs 16 are formed to extend from the front portion to the rear portion of the case 10 along the longitudinal direction of the case 10 and to be arranged in multiple stages along the circumferential direction of the case 10 .

In detail, the fluid ejected through the discharge hole 34 is ejected toward the case according to the rotation of the body portion 30a, and can be rotated in the rotation direction R of the head 30. The fluid introduced between the friction wing 30b and the inner circumference of the case 10 is rotated at a high speed by the friction protrusion 38 and the friction groove 39.

At this time, the case ribs 16 may increase the frictional force between the case 10 and the fluid, and the fluid rotating along the inner circumference of the case 10 may collide with the end surface of the case rib 16 It generates heat and generates turbulence and generates frictional heat with other fluids. Thereby, the fluid can be heated at a high speed.

Here, it is preferable that the case ribs 16 have a rectangular cross section. Of course, the case ribs 16 may be provided in a circular or semi-circular shape, but the fluid can be heated more effectively when the case ribs 16 are provided in a rectangular cross-section.

3, an opening 33 of the body 30a is formed with an inlet hole 36 communicating with the inlet 14, and a cover portion (not shown) which is integrally rotated with the body 30a 30c.

That is, the cover portion 30c partially shields the opening 33, and the fluid can be introduced into the accommodation space d through the inlet 14 and the inlet hole 36. [ Here, the inlet hole 36 is preferably disposed at the center of rotation of the cover portion 30c.

4 to 5, the cover portion 30c has a first impeller portion 40 forming a first vortex f so that the fluid is sucked into the accommodation space d. .

The first impeller 40 may be rotated together with the body 30a when the cover 30c is integrally rotated when the body 30a rotates. The first impeller portion 40 includes a hub having a through hole 41 communicating with the inlet hole 36 and a blade 42 slantingly projected along the outer periphery of the hub Do.

In detail, the blade 42 of the first impeller 40 protrudes radially outward along the outer periphery of the hub, and protrudes as a lower step toward the outer end, and the blade 42 of the first impeller 40 protrudes toward the opposite side of the rotation of the body 30a It can be formed obliquely.

At this time, the blade 42 of the first impeller 40 rotates in a clockwise direction from the rear surface of the cover portion 30c toward the inside of the accommodation space d during rotation, and a spiral first vortex f Respectively.

Of course, when the fluid for heating is filled, a first vortex (f) may be formed in the filled fluid, and if the fluid for heating is not filled, a spiral airflow may be formed in the air inside the accommodation space (d) have.

At this time, the first vortex f is directed toward the inside of the accommodation space (d) to pressurize the fluid toward the inner circumference side of the body portion (30a) to lower the pressure of the hub on the through hole (41) side, The fluid on the side of the through-hole 41 can be sucked into the through-hole 41 side.

The fluid sucked through the through hole 41 may be joined to the first vortex f and may be rotated along the inner circumference of the body 30a. At this time, the fluid that is rotated along the inner periphery of the body portion 30a can be discharged to the discharge hole 34 through the spiral flow force and the centrifugal force.

A second impeller portion 50 is formed on the front surface of the motor connection portion 31 to form a second vortex flow g opposed to the first vortex f formed on the first impeller portion 40 .

The second impeller portion 50 includes a hub coupled to the motor connection portion 31 and a blade 52 disposed obliquely with respect to the hub. The bolt 51 penetrating the hub And can be rotated in the same rotation direction of the body portion 30a by being coupled with the rotation driving shaft 20. [

The blade 52 of the second impeller portion 50 protrudes radially outward along the outer periphery of the hub and protrudes as a lower step toward the outer end of the hub, It can be formed obliquely.

In detail, the blade 52 of the second impeller 50 rotates in a counterclockwise direction from the front surface of the motor connecting portion 31 to the rear side of the cover portion 30c when the second vortex g ).

At this time, since the first vortex f and the second vortex g lower the pressure of the rotation center portion of the accommodation space d to suck the fluid into the accommodation space d, 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 40 and the second impeller portion 50 disposed opposite to the inside of the body portion 30a push the fluid from the rotation center of the accommodation space d to the inner circumferential side of the body portion 30a Since the hydraulic pressure in the rotation center is reduced and the fluid is sucked into the accommodation space (d), a separate pump for supplying the fluid is not required, so that the device can be simplified and the economical efficiency of the product can be improved.

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, a collision of two fluid flows repelling at the portion where the first vortex (f) and the second vortex (g) meet causes a large number of turbulent flows to be generated, thereby increasing the frequency of friction between 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 body portion 30a together with the centrifugal force due to the rotation of the body portion 30a.

Accordingly, even if the head 30 has the same number of revolutions per hour, the flow velocity of the fluid ejected through the ejection hole 34 is increased, and the formation of bubbles and the inner wave are promoted, so that the heating rate of the fluid can be improved .

Further, the frictional force between the inner periphery of the body portion 30a and the fluid can be increased.

A plurality of friction ribs 35 are formed along the longitudinal direction on the inner circumferential surface of the body 30a. The friction ribs 35 are spaced apart from each other in the circumferential direction of the body 30a, .

The friction ribs 35 are formed to extend to the inner circumferential front end and the inner circumferential rear end of the body 30a and the inner ends of the discharge holes 34 may be disposed between the friction ribs 35 have.

In detail, when the body 30a rotates, the fluid is rotated through friction with the inner circumferential surface of the body 30a and is urged to the inner circumference side of the body 30a through the centrifugal force, Can be discharged.

At this time, since the frictional force between the inner circumference of the body 30a and the fluid is increased through the friction rib 35, the fluid can be smoothly rotated.

Further, the friction rib portion 35 increases 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 body portion 30a, and the frictional rib portion 35 accelerates the friction heating of the fluid .

Since the friction rib portion 35 is difficult to be integrally formed when the body portion 30a is rotated, the friction rib portion 35 may be formed by welding after the body portion 30a is formed. The frictional rib 35 may be formed to have a rectangular cross-section so that frictional force with the fluid can be increased.

At this time, the friction rib portion 35 may be linearly formed along the longitudinal direction of the body portion 30a, and frictional force with the fluid may be increased when the friction rib portion 35 is formed in a serpentine shape.

As described above, since the fluid inside and outside the head can be simultaneously heated together with the heating through the friction ribs 30b and the case ribs 16, the heating speed of the product can be remarkably improved.

Hereinafter, the operation of the fluid friction stirrer 100 described above will be described in more detail.

First, the fluid is injected into an accommodation space (d) of the body portion (30a) through an inlet (14) of the case (10). At this time, it is also possible to inject the fluid by driving the pump connected to the inlet port 14. However, as the head 30 rotates, the first impeller section 40 and the second impeller section 50 form a spiral The fluid can be sucked into the accommodation space (d) without a separate pump.

The fluid introduced into the accommodation space (d) of the body part (30a) can be rotated together with the body part (30a). At this time, the friction rib portion 35 formed along the inner periphery of the body portion 30a may increase the frictional force between the body portion 30a and the fluid to rapidly rotate the fluid.

The rotated fluid can be pushed to the inner circumferential side of the body portion 30a by the centrifugal force and can be discharged to the circumferential surface side of the friction projection portion 38 along the discharge hole 34. [

At this time, the first impeller portion 40 and the second impeller portion 50 form a helical fluid flow in mutually opposite directions, thereby increasing the pressing force in the inner circumferential direction of the body portion 30a with respect to the fluid .

The fluid contained in the accommodating space of the body portion 30a is discharged through the discharge hole 34 in the state of being heated by the friction between the fluid molecules due to the collision between the friction ribs 35 and the turbulent flow in the collision, Can be ejected.

In addition, the fluid pressurized toward the inner peripheral side of the body portion 30a may be ejected to the outer peripheral side of the body portion 30a through the discharge hole 34. [ At this time, the fluid ejected through the discharge hole 34 is ejected toward the case 10 and is rotated in the rotation direction of the body portion 30a.

The fluid ejected to the case 10 through the discharge hole 34 can be heated by compression and expansion in accordance with a change in the flow rate and is rotated along the inner periphery of the case 10 and collided with the case rib 16 And can be heated by friction.

The fluid received in the space between the outer periphery of the body portion 30a and the inner periphery of the case 10 is continuously rotated and frictionally heated along the inner periphery of the case 10 through the friction wing portion 30b, Flows to the outlet 13 side of the case 10 and can be discharged to the piping for heating or hot water supply.

The fluid heated by the outer circumference of the body portion 30a and the inner circumference of the case 10 and flowing toward the outlet port 13 is mixed through the water storage groove portion 37 between the respective friction wing portions 30b, The temperature can be raised while maintaining a temperature distribution.

At this time, if the head 30 is rotated at 3500 to 3800 rpm, the fluid at room temperature flowing into the inlet 14 may be heated to 65 to 95 degrees Celsius when discharged to the outlet 13.

6 is an exemplary view showing a fluid friction boiler head according to a second embodiment of the present invention. In the second embodiment, the basic configuration except for the discharge hole and the auxiliary discharge hole 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. 6, the friction groove portion 239 may be formed with an auxiliary discharge hole 234b penetrating the friction wing portion 230b to communicate with the accommodation space d.

The outer end of the discharge hole 234a may be branched by polygalray to form a plurality of through portions on the circumferential surface of each of the friction protrusions 238.

In detail, the auxiliary discharge holes 234b may be radially formed along the friction wings 230b, and may be formed in the respective friction grooves 239. The discharge holes 234a are formed radially along the friction wings 230b and may be formed in the friction protrusions 238 so as to be alternated with the auxiliary discharge holes 234b.

At this time, the outer end of the discharge hole 234a may be branched into triangular shape in a trident shape, and a pair of flow paths branched to the both sides from the central portion may be inclined toward the auxiliary discharge hole 234b formed in each friction groove portion 239 Is preferred.

Accordingly, the fluid ejected through the auxiliary discharge hole 234b can be pressurized by the fluid ejected from the end of the discharge hole 234a, and can be decelerated and stepped up.

That is, the fluid having the inner bubbles formed through the auxiliary discharge hole 234b at a high speed / reduced pressure can be reduced / boosted by the fluid ejected by the discharge hole 234a and heated to the inner wave of the bubbles.

At this time, the fluid sprayed to the case 210 through the auxiliary discharge hole 234b moves away from the auxiliary discharge hole 234b in a natural state without external force and is decelerated and boosted, Since the pressure is forcibly rapidly increased and increased by the pressure through the fluid ejected by the fluid ejecting unit 234a, the heating amount and the heating rate through the generation and destruction of bubbles can be increased.

The fluid ejected toward the case 210 through the auxiliary ejection hole 234b and the fluid ejected obliquely toward the case 210 through the ejection hole 234a cause the fluid to be ejected from the case 210 A turbulent layer is formed on the inner circumferential side and cracking and destruction of the case 210 due to the fluid ejected toward the case 210 can be significantly reduced.

FIG. 7 is an exemplary view showing a fluid friction heat boiler head according to a third embodiment of the present invention. In the third embodiment, the basic configuration except for the shape of the discharge hole is the same as that of the above-described embodiment, so a detailed description of the same configuration will be omitted.

7, the rim 334c of the discharge hole 334 is tapered so as to be inclined toward the inner circumferential side of the case 310. The rim of the discharge hole 334, It is preferable that a screw groove 334d for guiding the flow is formed.

In detail, the fluid accommodated in the accommodation space (d) can be pressurized and discharged to the discharge hole (334) by the centrifugal force according to the rotation of the body part. At this time, the spiral screw groove 334d formed in the inner periphery of the discharge hole 334 rotates along the inner circumference of the discharge hole 334 and passes therethrough.

Here, the fluid h rotating along the inner periphery of the discharge hole 334 has a very fast flow rate as compared with the linear passage of the discharge hole 334, and the bubble formation through the hollow can be performed more smoothly have.

The fluid h spirally rotating along the inner periphery of the discharge hole 334 reduces the pressure of the central portion of the discharge hole 334 and the pressure of the fluid k passing through the center of the discharge hole 334 Acceleration and decompression can be promoted.

Then, the fluid that has passed through the discharge hole 334 is slowed by expansion. At this time, since the rim 334c of the discharge hole 334 is provided so as to be inclined and expanded, the fluid to be spirally rotated can be more smoothly expanded, and the ridge wave of the bubble through the pressure- The heating rate through generation and rupture can be improved.

In addition, the spirally discharged fluid may collide with the fluid that is rotated along the rotational direction of the friction wing portion 330b, thereby generating a large amount of turbulent flow. Thus, frictional heat generation due to friction between fluids can be promoted.

As the rim 334c of the discharge hole 334 is expanded, the discharge of the fluid discharged through the discharge hole 334 can be promoted and the deceleration of the fluid due to the expansion can be performed more quickly, 310 can be minimized by minimizing wear and damage to the case 310 due to the fluid.

8 is a cross-sectional view illustrating a fluid friction boiler head according to a fourth embodiment of the present invention. In the fourth embodiment, the basic configuration except for the arrangement of the cover portion and the bearing is the same as that of the above-described embodiment, so that detailed description of the same configuration will be omitted.

As shown in FIG. 8, the cover part 440c may be formed with a support pipe part 444 extending along the rim of the inflow hole 446 to the inside of the inflow port 414.

A stepped portion 444a is formed on the outer circumference of the support pipe portion 444 to be in contact with the bearing 417 provided in the case 410. The bearing 417 and the bearing 417 are provided at the rear of the stepped portion 444a. It is preferable that a sealing member 418 for partitioning the heating space c is provided.

The sealing member 418 seals the fluid in the heating space c so as not to flow toward the bearing 417 to prevent the lubricant of the bearing 417 from being removed, It is possible to prevent damage such as cracking.

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 frictional heat boiler blower 10,210,310: Case
13: outlet 14: inlet
16: Case rib 20: Rotary drive shaft
30: head 30a:
30b, 230b, 330b: friction wing portion 30c: cover portion
31: motor connection part 32: dummy friction wing part
34,234a, 334: Discharge hole 35: Friction rib section
36: Inflow hole 37: Reservoir groove
38, 238, 338: friction protrusions 39, 239:
40: first impeller part 50: second impeller part
234b: auxiliary discharge hole

Claims (5)

delete delete delete A fluid frictional heat boiler head for heating an inflow fluid 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,
The head
A housing space in which fluid is received is formed at one side of the housing, an opening disposed opposite to the inlet, and a key groove is formed at the other side of the housing, the housing being connected to the motor, A cylindrical body portion having a plurality of friction ribs spaced apart from each other in the circumferential direction along the longitudinal direction and projecting inwardly in multiple stages;
A plurality of protrusions are formed on the outer circumference of the body portion in the circumferential direction and are provided in multiple stages in the longitudinal direction of the body portion, the protrusions are partitioned by the ring-shaped reservoir groove portions, and the friction protrusions and the friction grooves are sequentially A friction wing portion formed to be disposed to have a discharge hole communicating with the accommodation space through the friction projection portion;
A dummy friction wing provided at a front end and a rear end of the body so that at least the discharge hole is not formed through the dummy friction wing;
Wherein the cylindrical body portion has a cover portion formed with an inflow hole communicating with the inflow port,
The cover portion is provided with a first impeller portion forming a first vortex so that the fluid is sucked into the accommodation space, and the motor connection portion has a second impeller portion forming a second vortex flow opposite to the first vortex And,
Wherein a rim of the discharge hole of the friction wing portion is tapered, and a screw groove is formed in the inner periphery of the discharge hole to induce a spiral flow of the discharged fluid,
Wherein the discharge hole includes an inner discharge hole connected to the accommodating space and vertically penetrating the circumferential surface of each of the friction protrusions, and a pair of inclined discharge holes branched from both sides of the inner discharge hole and inclinedly passing through the circumferential surfaces of the respective friction protrusions. / RTI >
Wherein the friction groove portion is formed with auxiliary discharge holes penetrating the friction blade portion to communicate with the accommodation space. delete

Images