WO2004042286A1

WO2004042286A1 - Natural wind air-conditioning system

Info

Publication number: WO2004042286A1
Application number: PCT/KR2003/001647
Authority: WO
Inventors: Young-Youl Yun
Original assignee: Young-Youl Yun
Priority date: 2002-11-08
Filing date: 2003-08-14
Publication date: 2004-05-21
Also published as: AU2003258838A1

Abstract

A natural wind air-conditioning system is provided to produce nearly natural wind by amplifying the turbulence degree of the air flows and making natural convections with irregular and soft wind, thereby enhancing the pleasant sensitivity of the user. The natural wind air-conditioning system includes a case (10) one-sidedly with an air vent (20), an air blower (70) placed within the case distant to the air vent to generate wind, and a heat exchanger placed within the case close to the air blower to exchange heat. Means (30) for dissipating pressure waves is placed external to the case and positioned close to the air vent, or placed internal to the case and positioned between the heat exchanger (28) and the air vent to scatter and dissipate the pressure waves of the wind blown from the air blower and passed the heat exchanger and make the cycles thereof irregular. A suction port (80) is spaced apart from the air vent by a predetermined distance while facing the air vent. A suction duct (90) communicates the suction port with the inside of the case to guide the air input through the suction port to the inside of the case.

Description

NATURAL WIND AIR-CONDITIONING SYSTEM

BACKGROUND OF THE INVENTION

(a) Field of the Invention The present invention relates to a natural wind air-conditioning system where the wind from rotary control fans interferes with the wind from the blower to scatter the pressure waves thereof. The suction port is placed opposite to the air vent to make pressure differences, which result in two different forces of pushing and pulling. The indoor air current forms natural convections due to those different forces.

(b) Description of the Related Art

Generally, natural wind develops as a result of pressure differences

between two regions, and is blown in an unpredictably irregular manner.

The artificial wind from an electric fan or an air-conditioner with the rotation of wings is generated by forcefully intercepting and pushing the air,

and blown intermittently. Accordingly, the blowing of the artificial wind is

made more regular than that of the natural wind. With the artificial wind

blowing, compression and rarefaction air particle states are repeated

mechanically and regularly due to the rotation of the rotators, and pressure

waves are generated.

The rarefaction refers to the state where the air particles are spread

apart with low air pressure, while the compression refers to the state where

the air particles are compressed together with high air pressure. These states are continuously repeated with the artificial wind.

When the artificial wind is intermittently and continuously generated from the electric fan or air conditioner by forcefully intercepting and moving the air, uniform pressure differences as well as mechanical continuity and regularity are made, and expressed by the pressure waves

When the human body is long exposed to the artificial wind, a headache or a skin pricking or stinging is made, and the face is swollen.

This is due to the mechanical stress where the compressions and the rarefactions of the artificial wind and the mechanically repeated pressure waves continuously impinge upon the body or skin at a regular frequency.

By contrast, the natural wind little involves such a trouble to the human body or skin in that it is blown unpredictably irregular due to the two forces of pushing and pulling made in the presence of pressure differences. The natural wind does not make cumulative effects of pressure stress to the human body. That is, even when the human body is long exposed to the natural wind, it is not pricked or swollen, but bears soft and tender feelings or sensations.

Recently, in order to make the artificial wind approximate to the natural wind, it has been proposed that the frequency of the pressure waves is varied by changing the rotation speeds of the air blower fans or by colliding the artificial wind against the wall or ceiling to reduce the bad or harmful effects of the pressure waves.

However, in case the rotation speeds of the blower fans are changed, only the cycle of the pressure waves becomes longer and the frequency

variation thereof is made slightly further, but those pressure waves are made

still cyclically.

Furthermore, in case the artificial wind collides against the wall or

ceiling, the pressure waves are scattered while reducing the damages due

thereto, but the strength of the wind becomes largely weakened.

When the wind of the air-conditioner is directed toward the ceiling,

the temperature of the region over the accommodation of persons is first

varied, and the temperature of the region below the personal

accommodation is varied thereafter. Consequently, the energy efficiency is deteriorated in that the air-conditioning time period becomes elongated, and the energy consumption due to the thermal loss is increased.

As shown in Fig. 1 , two fans 2 were angled to each other by a

predetermined degree (θ) before the user 1 such that the winds from the

respective fans 2 collide with each other. Even though the user had stayed long before the fans 2 while being exposed to the winds therefrom, he little

experienced the sensations of skin pricking or headache. Extensive

researches have been made to improve the situation, and it turns out that in

case the winds running in different directions impinge upon (or are mixed

with) each other, the turbulence degree thereof is amplified while scattering

or dissipating the pressure waves. In this way, the artificial wind becomes

to be in a state similar to that of the natural wind, and the possible stress

thereof to the human body is decreased while creating tender feelings or sensations, and elevating the pleasant sensitivity of the human body to the

wind.

The above-like investigation results are disclosed in Korean Patent

No. 379992 (Natural wind electric fan) and Korean Patent No. 360775

(Natural wind air-conditioner).

Considering that the human body less suffers stress with the

unpredictably irregular collisions of the natural wind than with the definite and

continuous collisions of the artificial wind, the 379992 Patent discloses a structure where the rotational axes of two or more rotators are at a

predetermined angle with each other, and the rotation speeds thereof are varied cyclically. The winds from the rotators impinge upon each other, thereby becoming irregular and increased in their turbulence degree. Then, the winds temporarily or partially collide with the human body in an unpredictably irregular manner while being varied in the strength as like with

the natural wind. In this way, the artificial wind becomes to be in a state similar to that of the natural wind, and the possible stress thereof to the

human body is decreased while creating tender feelings or sensations, and

elevating the pleasant sensitivity of the human body to the wind.

The 360775 Patent discloses a structure where the basic structure of

the 379992 Patent is applied to an air conditioner. In order to improve or

remove the troubles of the user such as the sensations of headache,

muscular pain or skin pricking, the wind blown from the blower and passed

the heat exchanger cyclically impinges upon the wind from the control fan (the indoor air current) at a predetermined angle so that the turbulence

degree thereof is amplified, and the blown wind becomes irregular and soft.

The air-conditioned wind is controlled to be varied in its texture, temperature

and volumes such that the user can select the desired functions or

conditions. In this way, the pleasant sensitivity of the user to the air-

conditioned wind is elevated. The pressure wave is scattered to make the

artificial wind come closer to the natural wind, and the user is prevented from

feeling headache or skin pricking even when long exposed to the artificial

wind. However, with the above-described techniques, as the wind is simply

blown from the rotator or the air conditioner to the indoor side, it becomes possible to generate nearly natural wind by scattering the pressure waves, but problems are still made in that the wind strength is weakened, or the wind does not reach the distant region due to the resistance of the indoor air, thereby not making convections over the entire indoor area in rapid and

fluent manners.

The natural wind forms convections in such a way that the air

continuously flows from one region to the other region due to the two

different forces of pushing and pulling generated by the difference between

the high pressure region and the low pressure region. However, with the

conventional techniques where the wind is forcefully blown from one side to

the other side, a natural convection is not made due to the resistance of the

indoor air pressure and the air particles. Referentially speaking, the weight of the 1m³ air at 0^°C under the pressure of 1kg/cπ is 1.251kg. The wind

blown through the air conditioner proceeds while overcoming the resistance

due to the air weight. Therefore, as it comes further distant from the air

vent, the strength of the wind becomes reduced, and the convections cannot

be made over the entire indoor area.

In particular, as the air conditioner has an air outlet placed at the top

and an air inlet placed at the bottom, the circulating range of the convection

is short, and the wind is not well transmitted to the desired place.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a natural wind air-

conditioning system where the air inlet is placed distant from the air outlet to make pressure differences, and the indoor air current form natural convections due to two different forces of pushing and pulling, induced by the pressure differences. It is another object of the present invention to provide a natural wind

air-conditioning system where with room air conditioners such as a

household air conditioner and a vehicle air conditioner with simplified

functions of temperature controlling, turbulence amplifying, and air flow

speed and rate controlling, the troubles of the user such as headache,

muscular pain and skin pain are significantly improved by making the air

current rapid and soft due to the pressure differences while enhancing the

thermal distribution capacity, thereby enhancing the pleasant sensitivity of

the user. It is still another object of the present invention to provide a natural

wind air-conditioning system where the nearly natural wind is effectively fed

to the distant place by forming natural conventions, and the energy efficiency

is heightened by directly the air-conditioned wind to the accommodation of

persons through controlling the mixture ratio of the wind blown from the

blower and passed the heat exchanger and the control wind from the control

fans.

These and other objects may be achieved by a natural wind air-

conditioning system with the following features. The natural wind air-conditioning system includes a case one-sidedly

with an air vent, an air blower placed within the case distant to the air vent to generate wind, and a heat exchanger placed within the case close to the air blower to exchange heat. Means for dissipating pressure waves is placed external to the case and positioned close to the air vent, or placed internal to

the case and positioned between the heat exchanger and the air vent to scatter and dissipate the pressure waves of the wind blown from the air

blower and passed the heat exchanger and make the cycles thereof irregular.

A suction port is spaced apart from the air vent by a predetermined distance

while facing the air vent. A suction duct communicates the suction port with

the inside of the case to guide the air input through the suction port to the

inside of the case.

The pressure wave dissipation means is formed with one or more

control fans placed external to the case and positioned close to the air vent, or placed internal to the case between the heat exchanger and the air vent

such that they are each at a predetermined angle with the air flowing

direction of the air vent.

It may be difficult to obtain the installation space for the control fans,

or a problem may be made to the apparent shape of the air conditioner due

to the installation of the control fans. Furthermore, an air resistance may be

made to the wind blowing due to the installation of the control fans. In these

cases, the control fans may be installed at the inside and/or the outside of

the case in a separate manner. For instance, the control fans are operated between the heat exchanger and the air vent or around the air vent using ducts or hoses such that the wind therefrom interferes with the cooled or warmed wind while being at an angle with the latter.

The air fed through the suction duct may cyclically interfere with the wind blown from the air blower and passed the heat exchanger while being

at a predetermined angle with the latter.

The control fan has a function of dissipating the pressure waves by

generating the control wind using the indoor air such that the control wind interferes with the wind passed the heat exchanger to thereby produce

irregular and soft wind, and a function of controlling the temperature of the

wind by varying the mixture ratio of the wind element passed the heat

exchanger to the control wind element based on the indoor air.

The suction port is provided with a suction fan to forcefully inhale the

indoor air, and the suction fan has a motor and a blade rotatably connected to the motor.

With the natural wind air-conditioning system, the operation of a

compressor or a heater may be varied depending upon the mode of high,

middle, low, or low natural.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete appreciation of the invention, and many of the

attendant advantages thereof, will be readily apparent as the same becomes

better understood by reference to the following detailed description when

considered in conjunction with the accompanying drawings in which like

reference symbols indicate the same or the similar components, wherein:

Fig. 1 is a plan view of electric fans angled to each other by a predetermined degree;

Fig. 2 is a perspective view of a natural wind air-conditioning system according to a first embodiment of the present invention;

Fig. 3 is a side elevation view of the natural wind air-conditioning system shown in Fig. 2;

Fig. 4 is a plan view of control fans for the natural wind air-

conditioning system shown in Fig. 2, illustrating the installation state thereof;

Fig. 5 is a side view of control fans for the natural wind air-

Fig. 6 is a partially amplified sectional view of an air suction blower

for the natural wind air-conditioning system shown in Fig. 2, illustrating the

installation state thereof; Fig. 7 is a plan view of suction ports for the natural wind air-

Fig. 8 is a side elevation view of a natural wind air-conditioning

system according to a second embodiment of the present invention;

Fig. 9 is a side elevation view of a natural wind air-conditioning

system according to a third embodiment of the present invention;

Fig. 10 is a cross sectional view of the natural wind air-conditioning

system taken along the K-K line of Fig. 9;

Fig. 11 is a rear perspective view of the natural wind air-conditioning

system shown in Fig. 9;

Fig. 12 is a side elevation view of a natural wind air-conditioning

system according to a fourth embodiment of the present invention;

Fig. 13 is a side elevation view of a natural wind air-conditioning system according to a fifth embodiment of the present invention; Fig. 14 is a perspective view of a turbulence generator for the natural

wind air-conditioning system shown in Fig. 13;

Fig. 15 is a partially amplified sectional view of a turbulence

generator for the natural wind air-conditioning system shown in Fig. 13;

Fig. 16 is a cross sectional view of the turbulence generator for the

natural wind air-conditioning system taken along the H-H line of Fig. 15;

Fig. 17 is a cross sectional view of the turbulence generator for the

natural wind air-conditioning system taken along the G-G line of Fig. 16;

Fig. 18 is a side elevation view of a natural wind air-conditioning system according to a sixth embodiment of the present invention;

Fig. 19 is a side elevation view of a natural wind air-conditioning

system according to a seventh embodiment of the present invention;

Fig. 20 is a side elevation view of a natural wind air-conditioning

system according to an eighth embodiment of the present invention;

Fig. 21 is a side elevation view of a natural wind air-conditioning

system according to a ninth embodiment of the present invention;

Fig. 22 is a side elevation view of a natural wind air-conditioning

system according to a tenth embodiment of the present invention; Fig. 23 is a cross sectional view of the natural wind air-conditioning

system taken along the J-J line of Fig. 22;

Fig. 24 is a side elevation view of a natural wind air-conditioning system according to an eleventh embodiment of the present invention;

Fig. 25 is a side elevation view of a natural wind air-conditioning system according to a twelfth embodiment of the present invention;

Fig. 26 is a plan elevation view of a suction port for the natural wind

air-conditioning system shown in Fig. 25, illustrating the shape thereof;

Fig. 27 is a side elevation view of a suction port for the natural wind

air-conditioning system shown in Fig. 25, illustrating the shape thereof;

Fig. 28 is a perspective view of a natural wind air-conditioning

system according to a thirteenth embodiment of the present invention,

illustrating the state thereof applied to a car;

Fig. 29 is a side view of the natural wind air-conditioning system shown in Fig. 28;

Fig. 30 is a side elevation view of a turbulence generator for the

natural wind air-conditioning system shown in Fig. 28; and

Fig. 31 is a side elevation view of a natural wind air-conditioning

system according to a fifteenth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Preferred embodiments of this invention will be explained with

reference to the accompanying drawings.

Figs. 2 to 7 illustrate a natural wind air-conditioning system according to a first embodiment of the present invention. As shown in Figs. 2 to 7, the

system includes a case 10 with an air vent 20, an air blower 70 mounted within the case 10 and positioned distant to the air vent 20 to generate wind, and a heat exchanger 28 mounted within the case 10 and positioned close to the air blower 70 to exchange heat. Means for dissipating pressure waves

is provided external to the case 10, and positioned close to the air vent 20.

The pressure wave dissipation means scatters the pressure waves of the

wind blown from the air blower 70 and passed the heat exchanger 28 to

make the wind cycles irregular. A suction port 80 is spaced apart from the

air vent 20 by a predetermined distance while facing the latter. A suction

duct 90 communicates the suction port 80 with the case 10 to guide the air

input through the suction port 80 to the case 10.

The air blower 70 is formed with a motor 71 installed at the case 10,

and a plurality of blades 74 connected to a shaft 72 of the motor 71. The blades 74 may be operated in various ways of propeller, impeller,

sirocco fan, and others.

A grill 22 is installed at the air vent 20 to control the wind directions.

An air inlet 18 is formed at the front bottom of the case 10 to intake

the indoor air, and a filter 19 is provided at the air inlet 18 to filter alien

materials.

As shown in Figs. 2 to 5, the pressure wave dissipation means is

formed with one or more control fans 30, which are installed external to the

case 10 and positioned close to the air vent 20. Each control fan 30 has a

plurality of blades 34, and a rotation shaft 32 angled to the direction of the air vent 20 by a predetermined degree.

The directions of the motor 31 and the rotation shaft 32 may be varied, and the wind from the control fan 30 may be blown in various

directions. In the drawings including Fig. 3 and Figs. 8-23, the arrow indicates

the wind direction.

The number of the blades 34 is two or more. For example, the

control fan 30 may be propeller-typed with three or four blades.

Furthermore, the control fan 30 may be centrifugal-typed, or other-

typed.

The control fan 30 may utilize the air passed the heat exchanger 28,

the indoor air around the control fan 30, and the indoor air input through the

suction duct 90. In this embodiment, the control fan 30 uses the indoor air. The control fan 30 may use the different-routed air elements one by

one, or a mixture of those two or more air elements. Furthermore, the

amount of the air elements may be determined, or varied arbitrarily.

It may be difficult to obtain the installation space for the control fans

30, or a problem may be made to the apparent shape of the air conditioner

due to the installation of the control fans 30. Furthermore, an air resistance

may be made to the wind blowing due to the installation of the control fans

30. In these cases, the control fans 30 may be installed at the inside and/or

the outside of the case 10 in a separate manner. For instance, the control fans 30 are operated between the heat exchanger 28 and the air vent 20 or around the air vent 20 using ducts or hoses such that the wind therefrom interferes with the cooled or warmed wind while being at an angle with the

latter.

The control fans 30 using the ducts or hoses are provided with nozzles, which may be fixed or displaced.

In case the rotation shafts 32 of the control fans 30 are at a

predetermined angle with the air flow direction of the air vent 20, the

pressure wave of the wind from the control fans 30 interferes with the

pressure wave of the wind (warmed or cooled wind) blown through the air

vent 20 so that the compression and rarefaction states of the wind cyclically

repeated are scattered. Consequently, the pressure waves become

dissipated or weakened. This means that the repeated compression and

rarefaction states of the wind or the mechanical regularities thereof are dispelled, and the turbulence degree of the wind is amplified, thereby forming

irregular and soft wind flows.

The control fans 30 are operated 3-10 minutes later from the

operation of the air blower 70, or in accordance with the input information.

The control fans 30 are sequentially and repeatedly shifted from the low

speed to the high speed, or from the high speed to the low speed.

That is, each control fan 30 is structured such that the rotation speed

thereof is automatically shifted from the step 1 to the step 2, or to the step 3.

When needed, the rotation speed may be controlled manually.

Furthermore, the control fan 30 is structured such that the rotation speed thereof can be selected using a rotary switch or a remote control

switch.

The rotation shafts 32 of the control fans 30 are angled to each other by a predetermined degree, and possibly, to the air flow direction of the air

vent 20.

For example, the rotation shafts 32 of the control fans 30 are at an

angle of 0-180° with each other. The angle between the rotation shafts 32

may be determined or varied.

The rotation shafts 32 of the control fans 30 may be at a

predetermined angle with each other from the point of plan view as shown in

Fig. 4, and from the point of side view as shown in Fig. 5. That is, as shown

in Fig. 4, the plane angle between the rotation shafts 32 is established to be

α, and as shown in Fig. 5, the side angle between the rotation shafts 32 to be P-

It is preferable that the plane angle is in the range of 0°<α<180°, and

the side angle in the range of 0°<β< 90°.

When the plane angle and the side angle are both 0°, the blades (34)

of the two control fans 30 are linearly placed toward the same direction (the

rotation shafts 32 of the fans 30 proceed parallel to each other). In case the

plane angle is 90°, the blades 34 and the rotation shafts 32 are placed

perpendicular to each other. In case the side angle is 90°, the blade 34 of

the one control fan 30 is directed toward the front side, while the blade 34 of the other control fan 34 is directed toward the top or the bottom. In case the

plane angle and the side angle are 180°, the blades 34 of the two control

fans 30 are directed toward each other, or opposite to each other.

The plane angle and the side angle may be determined simultaneously, or separately. It is also possible that such angles are varied regularly or irregularly using a mechanical or electronic controller, or

controlled arbitrarily by the user.

When the two control fans 30 are mounted at the inside and/or the

outside of the case 10 such that the rotation shafts 32 thereof are angled to

each other by a predetermined degree, the pressure wave of the wind from

the one control fan 30 interferes with the pressure wave of the wind from the

other control fan 30. Consequently, the compression and rarefaction states

of the wind cyclically repeated are scattered, thereby weakening the

pressure waves thereof while amplifying the turbulence degree. Furthermore, the wind from the control fans 30 also interferes with the wind

blown through the air vent 20 and passed the heat exchanger 28 so that the

mechanical regularities (the compression and rarefaction states) of the

resulting wind are dispelled while weakening the pressure waves thereof,

thereby producing irregular and soft wind flows.

The plane angle α and the side angle β are preferably established

such that the pressure waves interfere with each other at a predetermined

location to make the wind blowing in the desired directions.

It is advantageous in the factors of pressure wave interference, wind direction and wind flow efficiency that the plane angle should be established

to be in the range of 5-120°.

Furthermore, it is advantageous in the factors of the wind direction and the wind flow efficiency that the side angle should be established to be

in the range of 5-60°.

The angle between the wind passed the heat exchanger 28 and the

wind from the control fans 30 is preferably in the range of 0-90°, more

preferably in the range of 5-60°.

The specific internal mechanism, the rotation power supply, the

protective wire, and the housing of the control fan 30 can be derived from the

structure of a usual fan or air blower, and detailed explanations thereof will

be omitted.

Furthermore, the control fans 30 is structured using a mechanical or

electronic controller such that the locations and angles thereof for making the interference can be determined or varied.

The respective control fans 30 are rotated at different speeds, and

the locations and angles thereof may be varied. That is, the control fans 30

are cyclically varied in their locations and speeds, and make a predetermined

phase difference from each other.

For example, when the user turns on the power switch with the

above structure, one of the two control fans 30 is slowly rotated, and the

other control fan 30 is kept to be at a standstill. When the rotation speed of

the first control fan 30 reaches 60% of the normal rotation numbers, the

second control fan 30 begins slowly rotated.

When the second control fan 30 is rotated, the pressure wave of the wind from the first control fan 30 interferes with the pressure wave of the wind from the second control fan 30. Consequently, the pressure waves of the wind from the two control fans 30 are scattered so that the cyclic

compression and rarefaction states become irregular. The irregular-stated control wind again interferes with the wind run through the heat exchanger

28 so that the turbulence degree of the resulting wind is amplified to thereby

produce irregular and soft wind flows.

It is possible to make a natural wind mode where the temperature

and volumes of the wind are controlled unpredictably in the following way.

That is, the motor 71 of the air blower 70 and the motors 31 of the control

fans 30 are controlled by a mechanical or electronic controller such that the

rotation numbers thereof are varied, and the wind from the air blower 70 and the wind from the control fans 30 collide with each other in a cyclic manner. The processed wind suffers texture variation, temperature variation and volume variation, and becomes turbulent to thereby produce irregular and soft wind flows.

The natural wind mode may be initially or periodically operated by the automatic or manual establishment of the user, or automatically operated when the room temperature agrees to the predetermined temperature.

The process of making the natural wind is illustrated in Table 1.

Table 1

In Table 1 , the operation time of each cycle is determined to be 5-60 seconds, or made irregularly per cycles. Ten or more cycles (for instance, 10-100 cycles) may be operated as one unit, or the user may arbitrarily determine or program the number of cycles for each unit.

The natural wind mode refers to the state where like the natural wind, the temperature, the shape and the strength of the wind are not regular, and restful and comfortable wind is repeated in a cyclic manner such that it is difficult or impossible to predict the temperature or volume thereof.

Furthermore, it is possible that the two control fans 30 are rotated for

a predetermined period of time with the normal numbers of rotation, but after

the predetermined time period is lapsed, the rotation speed of the first

control fan 30 becomes slowly reduced and halted, and the rotation speed of

the second control fan 30 then becomes slowly reduced and halted, while

the first control fan 30 begins rotated.

The control wind is irregularly varied in its compression and

rarefaction state because the pressure wave thereof is scattered through

repeating the above process. The control wind is blown toward the wind run through the air vent 20. Consequently, the wind from the control fans 30 interferes with the wind from the air vent 20 so that the turbulence degree of the wind is amplified to thereby produce irregular and soft wind flows, very

similar to the natural wind. The variation of the rotation speed of the control fan 30 may be

made using a timer, or an electronic part (such as a central processing unit,

and a semiconductor chip).

The user may manually vary the rotation speed of the control fan 30

using a rotary switch.

As shown in Fig. 6, the suction port 80 is provided with a suction fan

82. The suction fan 82 has a motor 81 , and a blade 84 connected to the

motor 81. The suction fan 82 forcefully inhales the indoor air while being

rotated. The suction fan 82 is internally fitted to the suction port 80 by a

support 85.

A filter 88 is preferably installed at the suction port 80 to filter alien

materials from the inhaled air.

The blade 84 is made in a type of propeller, impeller, or sirocco fan.

The end of the suction duct 90 placed opposite to the suction port 80

is preferably connected to the front side of the heat exchanger 28 as the

inhaled air is converted to cooled or warmed air while passing the heat

exchanger 28.

Fig. 8 illustrates the structure of a natural wind air-conditioning system according to a second embodiment of the present invention. As shown in Fig. 8, the air inlet structure may be dispensed at the front of the case 10, or an air inlet 18 may be structured to partially make the air inlet operation while being controlled in its switching operation. That is, as the

indoor air is inhaled through the suction port 80 communicated with the suction duct 90 and heat-exchanged, it becomes possible to make the

desired air circulation without installing a separate air inlet structure to the

case 10.

The wind run through the air vent 20 and the control wind run

through the control fans 30 collide with each other while forming a

predetermined angle γ.

In case the air inlet 18 is not installed to the case 10, the duct or

hose end connected to the control fans 30 may be fitted to case 10, or the air inlet or suction structural components may be used in a combinatorial

manner.

With the above-structured natural wind air-conditioning system

according to the first embodiment of the present invention, the wind dispelled

or scattered in its pressure wave by the control wind from the control fans 30

runs through the air vent 20, and moves along the indoor area. The wind is

then inhaled through the suction port 80. Accordingly, a natural convection

is made over the entire indoor area.

When the location of the suction port 80 is made at the wall opposite

to the air vent 20 to the bottom, the air flow run through the air vent 20 moves along the indoor area, and enters the suction port 80. Consequently, the convection is made over the entire indoor area, and the air-conditioning effect is maximized.

With the conventional air-conditioning system, as the air flow run

through the air vent 20 is again introduced into the air inlet 18 positioned directly below the air vent 20, the convection is not made over the entire

indoor area, but made only locally.

Furthermore, with the natural wind air-conditioning system according

to the first embodiment of the present invention, as with the natural wind

generated by the movement of air due to the difference between the high

pressure region and the low pressure region, the movement of air is made

due to the pressure difference between the air vent 20 through which the air

is blown at a predetermined pressure and the suction port 80 placed distant to the air vent 20 to inhale the indoor air by a predetermined pressure.

Consequently, an air current is formed due to the atmospheric pressure

difference as with the natural wind bearing two forces of pushing and pulling

to produce nearly natural wind flows.

The suction port 80 may be installed at the left and right sides of the

case wall opposite to the air vent 20 by branching the suction duct 90, or at

the left and right case walls around the air vent 20.

Furthermore, as shown in Fig. 7, plural numbers of suction ports 80 may be provided using two or more suction ducts 90. The suction duct 90

may be formed with a metallic tube or pipe, or a plastic tube or hose.

In case the plurality of suction ports 80 are provided at various locations, the air flow from the air vent 20 is forked in various directions, and

the air-conditioning is uniformly made over the entire indoor area.

In order to effectively treat the air from the air vent 20 with the plurality of suction ports 80 positioned at various, places, the respective

suction ports 80 are separately controlled in the air flow thereof, or switched.

That is, the rotation speed of the motor 83 may be controlled, or a switch

valve may be provided to control the air flow through the respective suction

ports 80.

A remote controller may be provided to control the operation of the

suction motor 83 or to switch the control valve while giving the user a

convenience in handling the suction ports 80.

Recently, as apartments, buildings, offices, school rooms, restaurants, factories, churches or department stores are designed to involve

a space for installing the air conditioner, the suction ports 80 and the suction

ducts 90 may be preliminarily laid at the proper wall place during the building

process. The natural wind air-conditioning system according to the present

invention is well adapted for this purpose.

The installation height of the suction port 80 is preferably in the

range of 30-90 cm from the bottom because at that height, a natural

convection is formed around the accommodation of persons.

Furthermore, when the switching of the suction port 80 and the

operation of the suction fan 82 are selectively controlled by the user, it is possible to control the wind blown through the air vent 20 in the desired directions, thereby making the efficient and optimal air conditioning. That is,

in case any suction port 80 inhales the indoor air, the wind run through the air vent 20 is naturally directed toward that suction port 80, and convection is made in that direction. In this way, the indoor air stream can be formed in

the desired direction, and the air conditioning can be localized to the

necessary space, thereby decreasing the energy consumption and

increasing efficiency in the air conditioning.

Figs. 9-10 illustrate a natural wind air-conditioning system according

to a third embodiment of the present invention. As shown in Figs. 9-10, the

control wind generated from the control fans 30 is introduced into the case

10 through tubes 36, and spray nozzles 94 are fitted to the case 10 at a

predetermined angle therewith such that the control wind collides with the wind from the blower 70 by a predetermined angle.

With the structure according to the third embodiment, the control fan

30 is mounted within a box case 38, and an inlet 39 for inhaling the indoor air

and plural numbers of tubes 36 for guiding the control wind into the case 10

are connected to the case 38,

The structural components according to the third embodiment are

the same as those related to the first and the second embodiments except

for the above-mentioned components, and hence, detailed explanations thereof will be omitted.

The plane angle and the side angle formed by the spray directions of the two or more spray nozzles 94 branched from the one control fan 30 at a

predetermined degree involve the same meaning as those angles α and β

formed by the rotation axes 32 of the two control fans 30 according to the first embodiment of the present invention.

Furthermore, as shown in Fig. 11 , it is also possible to place the control fan 30 external to the case 10, to direct the control tubes 36 from the

control fan 30 toward the case 10, and to install the spray nozzles 94

connected to the control tubes 36 at the case 10. In this case, the structural

components are the same as those related to the third embodiment except

for the aforementioned structural components.

As shown in Fig. 12, the pressure wave dissipation means has a

plurality of blades 34. The pressure wave dissipation means may be

formed with one or more control fans 30 installed within the case 10 between the heat exchanger 28 and the air vent 20 such that they are at a

predetermined angle with the flowing direction of the wind (warmed or cooled

air flow) blown from the blower 70 and passed the heat exchanger 28.

In order to make the explanatory convenience, it is illustrated in Fig.

12 that the control fan 30 is protruded from the inner surface of the case 10.

However, in such a case, the control fan 30 is liable to be a blockage to the

flowing of the wind from the blower 70, and cause noise occurrence.

Therefore, it is preferable that the control fan 30 is not prominent from the

inner surface of the case 10. In case the control fan 30 is structured in the above-described way, the pressure wave of the wind blown from the blower 70 and passed the heat

exchanger 28 is scattered by the control wind generated by the control fan 30, and the resulting wind is blown through the air vent 20.

With the above structure, as the control fan 30 is placed within the case 10, it apparently gives gracious feelings.

As shown in Figs. 13-16, the pressure wave dissipation means is

formed with a helical-shaped structure such that the wind (warmed or cooled

air flow) blown from the blower 70 and passed the heat exchanger 28 is

partially whirled to make turbulences. The pressure wave dissipation

means is possibly formed with a turbulence generator 50 installed within the

case 10 between the heat exchanger 28 and the air vent 20.

The turbulence generator 50 makes the blown wind be whirled or

irregular, and amplifies the turbulence degree of the wind, thereby resulting in irregular and soft wind flows.

As shown in Figs. 14-16, the turbulence generator 50 has a first ring-

shaped outer frame 56 fitted to the case 10 by a plurality of supports 57, and

a first ring-shaped inner frame 55 placed at the center of the first outer-frame

56. A second ring-shaped outer-frame 58 is spaced apart from the first

outer-frame 56 by a predetermined distance, and fitted to the case 10 by a

plurality of supports 57. A central shaft 54 has a one-sided end placed at

the center of the second outer-frame 58, and an opposite-sided end inserted

into the first inner-frame 55. A plurality of spokes are radially formed at a predetermined angle to interconnect the first outer-frame 56 and the first inner-frame 55 as well as to interconnect the second outer-frame 58 and the free end of the central shaft 54. Plate-shaped blades 52 interconnect the

spokes 53 sided with the first outer-frame 56 and the spokes 53 sided with the second outer-frame 58 in pairs. The blade 52 is not standing at the vertical plane, but fitted to the

spokes 53 rotated by a predetermined angle such that it seems to bear a

helical shape when viewed from the lateral side.

The plurality of supports 57 for fitting the first outer-frame 56 and the

second outer-frame 58 to the inner surface of the case 10 are stably fixed at

the rectangular inner sides of the case 10 side by side.

The supports 57, the first outer-frame 56, the second outer-frame 58,

the spokes 53, the central shaft 54 and the first inner-frame 55 are preferably

formed with a shape of not blocking the wind (warmed or cooled air flow) blown from the blower 70 and passed the heat exchanger 28, and with a

possibly thin thickness.

As shown in Figs. 14 and 15, the turbulence generator 50 is

preferably structured such that a motor 51 capable of making the clockwise

or anticlockwise rotation is installed at the first inner-frame 55, and as the

central shaft 54 is rotated, the helical angle of the blade 52 can be controlled.

With the controlled helical angle of the blade 52, as shown in Fig. 17,

a rotation frame 59 incorporating the spokes 53 is installed within the second

outer-frame 58 such that it can slide therein. In operation, when the motor 51 is rotated, the central shaft 54 is

rotated, and the lower-sided spokes 53 bodily combined with the central shaft 54 are rotated together to thereby turn only the lower-sided ends of the blades 52. As the first inner-frame 55 and the first outer-frame 56 are kept to be in a standstill, the upper-sided spokes 53 are also in a still state to thereby fix the upper-sided ends of the blades 52.

On the contrary, the upper-sided spokes 53 may be rotated, while

the lower-sided spokes 53 are kept to be in a standstill.

Accordingly, the helical angle of the blade 52 can be controlled by

varying the rotation of the motor 51 , and more particularly, by controlling the

clockwise or anticlockwise rotation of the motor 51 using a remote controller

or a control panel from the outside. In this way, it becomes possible to

control the turbulence degree of the wind.

Although not shown in the drawings, the turbulence generator 50 may be further provided with an external cylindrical container surrounding the

first outer-frame 56 and the second outer-frame 58. With the installation of

the external container, the turbulent wind is not leaked through the lateral

sides of the blades 52, thereby facilitating the generation of turbulences.

Furthermore, it is also possible that the turbulence generator 50 is

formed with a plurality of guidance holes for guiding the wind flows while

being at a predetermined angle with each other. In this case, helical groove

or protrusions may be formed at the guidance holes.

The turbulence generator 50 is dispensed with, while the heat exchanger 28 conducts the function of the turbulence generator 50. For this

purpose, a helical-shaped unit is fixedly or movably installed at the outlet side of the heat exchanger 28.

With the above-structured turbulence generator 50, the wind (warmed or cooled air flow) blown from the blower 70 and passed the heat exchanger 28 is whirled, and the turbulence degree thereof is amplified so

that the pressure waves of the wind interfere with each other, and are

scattered. The cyclically repeated compression and rarefaction states of

the wind are dispelled, and as a result, turbulent air flows, similar to the

natural wind state, are run through the air vent 20.

As shown in Fig. 18, the pressure wave dissipation means may be

structured such that the control fan 30 is placed external to the case 10, and

the turbulence generator 50 is placed internal to the case 10.

With the above-like arrangement of the control fan 30 and the turbulence generator 50, the wind blown from the blower 70 becomes turbulent while passing the turbulence generator 50, and the pressure wave thereof is scattered by colliding with the control wind from the control fan 30, thereby producing nearly natural wind. As shown in Fig. 19, the pressure wave dissipation means may be structured such that the control fan 30 is installed within the case 10, the turbulence generator 50 is installed within the case 10 between the control fan 30 and the air vent 20, or at the air vent 20.

With the above arrangement of the control fan 30 and the turbulence generator 50, the pressure wave of the wind blown from the blower 70 is scattered by the control wind from the control fan 30, and re-scattered while passing the turbulence generator 50, thereby producing turbulent air flow nearly close to the natural wind.

Although it is explained that the turbulence generator 50 is placed between the control fan 30 and the air vent 20, the present invention is not limited to that structure. As shown in Fig. 20, it is possible that the turbulence generator 50 is placed next to the heat exchanger 28, and the control fan 30 is installed within the case 10 between the turbulence generator 50 and the air vent 20. As shown in Fig. 21 , the pressure wave dissipation means may be formed with an impact guide unit 60 having one or more guidance holes 62, which is provided within the case 10 between the air vent 20 and the heat exchanger 28. A part of the wind blown from the blower 70 and passed the heat exchanger 28 passes through the guidance holes 62 to function as a

control wind, and is at a predetermined angle with the remaining wind part.

The control wind part passed through the guidance holes 62 collides

with the wind part not passed the guidance holes 62 to thereby scatter the

pressure waves. Accordingly, the cyclically repeated compensation and

rarefaction states of the wind are scattered to thereby produce nearly natural

wind. The resulting wind is blown through the air vent 20.

The pressure wave dissipation means may be formed by selecting

one or more of the structures illustrated in Figs. 2 and 3 and Figs. 8-21 , and

combining them.

For instance, one or more control fans 30 are installed between the

heat exchanger 28 and the turbulence generator 50, and other one or more control fans are installed around the air vent 20.

In case the control fan 30 is placed between the heat exchanger 28 and the turbulence generator 50, the suction duct 90 is branch-lined such

that the indoor air input through the suction port 80 is partially fed to the

control fan 30.

The air fed through the suction duct 90 or the air around the control

fan 30 may be used as the input air for the control fan 30. Optionally, the

air fed through the suction duct 90 and the air around the control fan 30 may

be mixed in a controlled manner to be used as the input air for the control

fan 30.

The indoor air input through the suction duct 90 is partially fed to the control fan 30, and the remainder is fed to the blower 70 and/or the heat

exchanger 28. The air volume to be fed is determined definitively or

controlled artificially.

In case the indoor air input through the suction duct 90 is fed to the

blower 70, as shown in Figs. 3 and 8, it is possible to make the feeding to the

inlet side of the blower 70, and as shown in Fig. 12, to make the feeding to

the outlet side of the blower 70, that is, toward the heat exchanger 28.

As shown in Figs. 22 and 23, the pressure wave dissipation unit may

be structured such that the air input through the suction duct 90 is run

through a spray nozzle 94 angularly placed within the case 10, and partially collides with the wind blown from the blower 70 and passed the heat

exchanger 28 while being at a predetermined angle with the latter.

The air input through the suction duct 90 is partially guided to the spray nozzle 94 via a branch tube 92. The branch tube 92 may be formed

with a pipe, a hose, or a duct.

When a part of the wind input through the suction duct 90 collides

with the air-conditioned wind, the pressure waves of the wind are scattered,

thereby producing soft wind flows.

The spray angle (the installation angle) of the spray nozzle 94 is at 5-

60° with the direction of the air-conditioned wind.

A valve 98 is installed at the branch tube 92 to control or switch the

air flow.

Figs. 24 and 25 exemplify the structure where the air input through the suction duct 90 is partially fed to the control fan 30 via the branch tube 21.

With the control fan 30 installed around the air vent 20, the rear or

lateral side of the case 10 may be opened to allow the passage of the

external air while controlling the opening degree.

The indoor air input through the suction duct 90 is partially fed to the

area between the blower 70 and the heat exchanger 28 or between the heat

exchanger 28 and the air vent 20, or around the air vent 20. The feeding

location may be controlled using a valve.

With the above structure, the temperature of the blown air can be

controlled by varying the air flows from the blower 70 and the respective control fans 30. In case the temperature of the air-conditioned wind is lower than the predetermined temperature, the air flow from the blower 70 is reduced while partially or wholly increasing the air flow from the control fans 30 such that the warm air is more contained in the room. In case the

temperature of the air-conditioned wind is higher than the pre-determined temperature, the air flow from the blower 70 is increased while partially or

wholly decreasing the air from the control fans 30 such that the cooled air is much more contained in the room than the warm indoor air. When the

radiator is concerned, the controlling is made contrariwise.

It is possible to make a natural wind mode where the processed wind

approximates to the natural wind by controlling the air flows from the blower

70 and the respective control fans 30 while varying the temperature and

volumes of the wind with a mechanical or electronic controller. Fig. 26 exemplifies the structure where the air vent 20 is directed

toward the front side B as well as toward both lateral sides A.

When the air vent 20 is directed toward three different sides, it

becomes possible to spread the cooled or warmed wind over the entire

indoor area.

When the air vent 20 is formed at both lateral sides A, it is preferable

to install a grill 22 front thereto such that it can be switched when needed.

As shown in Fig. 27, the air vent 20 may be longitudinally extended up and down. Alternatively, it is possible to differentiate the directions of

the grill 22 while dividing the area of the air vent 20 into two or three parts such that the wind is flown out from the air vent 20 to those different directions. When needed, it is possible to switch the lower-sided (D) and

(E) grills 22.

As shown in Figs. 27 and 31 , it is possible to install a partition 38 around the air vent 20 such that the air flow from the heat exchanger 28 to

the air vent 20 can be partitioned by two parts.

Furthermore, two or more partitions 38 may be provided while

partitioning the air flow into three or more parts.

When the partition 38 is installed in the above way, it becomes

possible to partly divide and control the wind run through the air vent 20.

That is, the temperature and volumes of the wind passed the upper-sided (C)

grill 22 may be differentiated from those of the wind passed the lower-sided

(D) and (E) grills 22. For instance, as shown in Fig. 31 , the heat exchangers 28 and the

blowers 70 are installed each in a separate manner, and the operations

thereof are differently controlled using a controller to thereby differentiate the

temperature and volumes of the wind to be blown out. The numbers of the

partitioned-installed heat exchangers 28 and blowers 70 reach 2-8.

The heat exchangers 28 and the blowers 70 may be numerically the

same (for instance, two heat exchangers and two blowers), or different (for

instance, one heat exchanger and two blowers, or two heat exchangers and

one blower). The partition 38 is rotatably hinged at its end sided with the air vent

20 such that the partitioning of the wind to be blown out is varied by a predetermined ratio when needed.

The above structure enables one air conditioning system to produce two or more wind flows differentiated in the volume, speed and temperature

thereof. That is, with the above structure, it is possible to control the directions of the wind differently depending upon the temperature and

strengths of thereof, and to produce wind flows of different temperatures and

strengths depending upon the locations and tastes of the user.

When two or more blowers 70 are provided, the central shafts of the

respective blowers 70 are at a predetermined plane angle as well as at a

predetermined side angle with each other. Consequently, the wind flows

intervene with each other such that the texture variation and the turbulence

thereof are made effectively. The central shafts of the two or more blowers 70 are rotatably

structured such that the plane and side angles thereof can be varied. The

plane and side angles of the two or more blowers 70 to each other are

preferably determined or varied in the range of 5-60°.

The two or more blowers 70 may be operated with the same rotation

speed, or different rotation speeds. It is possible to structure the

respective blowers 70 such that the rotation speed thereof can be varied with

different cycles.

In case two or more blowers 70 are installed such that the resulting wind flows interfere with each other, only the blowers 70 may be used to

dissipate the pressure waves without providing the pressure wave dissipation means in a separate manner. In such a case, as the blowers 70 conduct the function of the control fan 30, the control fan 30 may be omitted.

Figs. 28 and 29 illustrate examples where the natural wind air- conditioning system according to the present invention is applied to a car.

In this case, as shown in Fig. 30, the turbulence generator 50 is preferably

installed at an air duct 97 positioned close to the air vent 20 to facilitate the

generation of turbulences.

As shown in Figs. 28 and 29, when the suction ports 80 are installed

at the center of the rear seat as well as at the left and right sides of the rear

seat, natural convections are made within the internal area of the car.

Particularly as the internal area of the car is much narrower than that of the

house, the air flow between the air vent 20 and the suction port 80 can be directly made while distinctively exerting the convection effect.

Although not illustrated in the drawings, the suction ports 80 may be

installed at the area between the driver seat and the assistant seat, and at

both , lateral sides of the rear seat. When the suction port 80 is also

provided at the trunk while forming a small through-hole between the trunk

and the rear seat, the natural convection can be made up to the inside of the

trunk.

Accordingly, the shortage with the usual cars where the cooled or

warmed wind blown from the front dash board does not reach the rear seat

in a sufficient manner with increased air-conditioning time and decreased air- conditioning efficiency can be overcome by employing the inventive natural wind air conditioning system where natural wind-like soft air flows are quickly

made based on the pressure differences.

When the natural wind air-conditioning system is applied to the car

air conditioner, it may be called the "natural type" as the improvement of the

instrument type, which is more economic and excellent than the dual type.

The natural type involves improved indoor temperature distribution, simplified

indoor temperature controlling, excellent indoor temperature elevation and

drop, and soft and rapid air current flowing.

Furthermore, with the usual cars, the air vent 20 misses the user

because he may be inconvenient under the direct influence of the wind

blown through the air vent for a long time. As the inventive structure

enables the temperature and volumes of the wind from the respective air vents 20 to be controlled in a separate manner, it becomes possible to differentiate the locations and sizes of the air vent 20 as well as the shapes thereof in various ways.

In order to obtain the installation space for the control fans 30 and to compensate for the air resistance to the wind blowing, it is possible that the control fans 30 may be installed separately while communicating with the space between the heat exchanger 28 and the air vent 20 or the space around the air vent 20 using a duct or a hose such that the wind from the control fans 30 cyclically interfere with the wind from the blower 70 while being at a predetermined angle with the latter (See Fig. 28).

The natural air-conditioning system according to the present invention may involve various combinations of units for improving the properties and functions of the air-conditioned wind such as antibiosis, fragrance, humidification, atmospheric discharge, and ionization. That is, in order to improve the pleasant sensitivity of the user to the air-conditioned wind, various additional elements or units may be introduced.

For instance, if the water generated from the heat exchanger (the evaporator) during the making of cooled wind is vaporized by a humidifier and discharged together with the cooled wind, the indoor air can be prevented from being dried. In this case, the water vaporized by the humidifier is preferably sterilized, and purified.

Practically, it is difficult to treat the water generated from the evaporator during the making of cooled air, particularly with the indoor installation type. This difficulty can be effectively overcome by installing a

humidifier.

Furthermore, the pleasant sensitivity of the user can be improved by

additionally installing an electric discharger for collecting and discharging the

electrostatics made at the air particles during the air inhaling and the wind

blowing.

In addition, when an interest is made with respect to the detailed

structure of the blown wind and air flows based on the advanced science,

various techniques of wholly improving the pleasant sensitivity of the user can be developed.

As described above, with the inventive natural wind air conditioning system, the pressure waves of the control wind generated from one or more

control fans and the air-conditioned wind blown through an air vent are compensated for each other or weakened due to the interference thereof. The resulting wind becomes turbulent, and amplified in the turbulence

degree, thereby producing nearly natural soft wind. In case the user

exposes to the soft wind (cooled or warmed air flows), he always has cool,

warm and soft sensations or feelings, and does not suffer skin friction or

pains, or face swelling.

Furthermore, as it is possible to install the control fans at the inside

or the outside of the case, various designs for the air-conditioning system

may be made while varying the outlines thereof.

The wind elements passed through the helical-shaped structure of the turbulence generator impinge upon each other, and become turbulent to

thereby produce nearly natural wind.

With the inventive natural wind air-conditioning system, the nearly

natural wind enables the flowing of the wind to be directed toward the

relevant person, and the energy efficiency is enhanced. The air-

conditioning time is shortened, and the energy consumption is reduced.

Furthermore, an optimal energy consumption reduction can be made by

operating only the required suction ports for the air conditioning while closing

the unneeded suction ports.

Furthermore, with the inventive natural wind air-conditioning system, the indoor air current is forcefully circulated by placing the suction port opposite to the air vent, and convections are made over the entire indoor area due to the atmospheric pressure differences, as with the natural wind. In this way, the air conditioning is uniformly made every nook and corner,

and even with the small amount of wind flow, the air conditioning is made up to the distant place. Accordingly, the air-conditioning efficiency is

increased by 15% or more.

With the inventive natural wind air-conditioning system, as it is

possible to control the mixture ratio of the wind generated from the control

fans using the indoor air to the cooled or warmed wind passed the heat

exchanger, the headache or rejection sensation of the user due to the great

difference between the temperature of the cooled or warmed wind and the

body temperature of the user can be significantly reduced. The temperature of the cooled or warmed wind can be easily controlled by

varying the mixture (or collision) ratio of the wind passed the heat exchanger

and the control wind generated from the control fans using the indoor air.

In this way, soft indoor air current can be rapidly formed due to the

atmospheric pressure differences, and a revolutionary improvement in the

heat distribution capacity can be made while reducing the energy

consumption.

With the inventive natural wind air-conditioning system, as the

temperature and volumes of the blown wind is easily controlled by varying

the mixture (collision) ratio of the cooled or warmed wind to the control wind, the wind blown through the air vent can be directly led to the accommodation of the users while reducing the energy consumption made over the lighting or

the top level.

Accordingly, with the structure according to the present invention, in

order to reduce or nearly remove the mechanical stress of the artificial wind,

the turbulence amplification of the wind to be blown is made by the collision

between the cooled or warmed wind and the control wind, or by the turbulence generator. The motor of the blower and the motor of the control

fan are centrally controlled by a mechanical or electronic controller to vary

the rotation numbers of the respective motors. The wind elements from

the blower and the control fans cyclically collide with each other while making

the texture variation, the temperature variation and the volume variation with

respect to the wind to be blown. The resulting wind becomes turbulent to thereby produce irregular and soft wind. In this way, it is possible to make a natural wind mode where it is difficult to predict the temperature and volumes of the wind. When the room temperature agrees to the predetermined temperature, the natural wind mode is automatically operated. Optionally, the user may manually operate the natural wind mode.

While the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that various modifications and substitutions can be made thereto without departing from the spirit and scope of the present invention as set forth in the appended claims.

Claims

WHAT IS CLAIMED IS:

1. A natural wind air-conditioning system comprising:

a case one-sidedly with an air vent;

an air blower placed within the case distant to the air vent to

generate wind;

a heat exchanger placed within the case close to the air blower to

exchange heat;

means for dissipating pressure waves placed external to the case and positioned close to the air vent, or placed internal to the case and

positioned between the heat exchanger and the air vent to scatter and

dissipate the pressure waves of the wind blown from the air blower and passed the heat exchanger and make the cycles thereof irregular;

a suction port spaced apart from the air vent by a predetermined distance while facing the air vent; and

a suction duct communicating the suction port with the inside of the

case to guide the air input through the suction port to the inside of the case.

2. The natural wind air-conditioning system of claim 1 wherein

the pressure wave dissipation means is formed with one or more control fans

placed external to the case and positioned close to the air vent such that the

rotational axes thereof each are at a predetermined angle with the air flowing

direction of the air vent.

3. The natural wind air-conditioning system of claim 1 wherein

the pressure wave dissipation means is formed with one or more control fans placed internal to the case between the heat exchanger and the air vent

such that the control fans each are at a predetermined angle with the

direction of the wind blown from the blower and passed the heat exchanger.

4. The natural wind air-conditioning system of claim 2 or 3

wherein together with the control fans separately placed external or internal

to the case, one or more spray nozzles are installed between the heat

exchanger and the air vent such that the nozzles each are at a predetermined angle with the direction of the wind blown from the blower and

passed the heat exchanger, and the outlet of each control fan communicates

with the corresponding spray nozzle through a duct or a hose.

5. The natural wind air-conditioning system of claim 4 wherein the spray air flows from the respective spray nozzles or the spray angles thereof are different from each other.

6. The natural wind air-conditioning system of claim 2 or 3 wherein the rotational axes of the control fans are at a plane angle α,

0°<α<180°, with each other from the plan view, and at a side angle β,

0°<β<90°, with each other from the side view.

7. The natural wind air-conditioning system of claim 2 or 3

wherein the respective control fans are rotated at different speeds, and the

speed of each control fan is variable.

8. The natural wind air-conditioning system of claim 2 or 3

wherein the air input through the suction duct, the air around the control fans,

or the mixture thereof in a predetermined mixing ratio is applied to the control fans.

9. The natural wind air-conditioning system of any one of

claims 1 to 3 wherein the pressure wave dissipation means comprises a

turbulence generator placed within the case between the heat exchanger

and the air vent or at the air vent with a helical-shaped structure for whirling

and colliding the wind elements blown from the blower and passed the heat

exchanger to make turbulences.

10. The natural wind air-conditioning system of claim 9 wherein

the turbulence generator comprises: a first ring-shaped outer frame fitted to the case by a plurality of supports; a first ring-shaped inner frame placed at the center of the first outer-frame; a second ring-shaped outer-frame spaced apart from the first outer-frame by a predetermined distance, and fitted to the

case by a plurality of supports; a central shaft with a one-sided end placed at the center of the second outer-frame, and an opposite-sided end inserted

into the first inner-frame; a plurality of spokes radially formed at a

predetermined angle to interconnect the first outer-frame and the first inner-

frame as well as to interconnect the second outer-frame and the free end of

the central shaft; and plate-shaped blades interconnecting the spokes sided with the first outer-frame and the spokes sided with the second outer-frame

in pairs.

11. The natural wind air-conditioning system of claim 10 wherein

the turbulence generator further comprises: a motor capable of making

clockwise or anticlockwise rotation installed at the first inner-frame and connected to the central shaft; and a rotation frame incorporating the spokes

and slide-movably installed within the second outer-frame.

12. The natural wind air-conditioning system of any one of

claims 1 to 3 wherein the pressure wave dissipation means comprises an

impact guide unit with one or more guidance holes provided within the case

between the air vent and the heat exchanger to guide the wind blown from

the blower and passed the heat exchanger such that a part of the wind

passes through the guidance holes to function as a control wind, and is at a

predetermined angle with the remaining wind part.

13. The natural wind air-conditioning system of claim 1 wherein

the suction port is provided with a suction fan to inhale the indoor air, and the suction fan has a motor and a blade rotatably connected to the motor.

14. The natural wind air-conditioning system of claim 1 or 13 wherein the suction port is provided with a filter for filtering alien materials from the inhaled air.

15. The natural wind air-conditioning system of claim 1 wherein

the end of the suction duct placed opposite to the suction port is

communicated with the front of the heat exchanger such that the inhaled air

passes the heat exchanger.

16. The natural wind air-conditioning system of claim 1 or 15

wherein the end of the suction duct placed opposite to the suction port is

branched into two portions where the one portion is communicated with the

front of the heat exchanger such that a part of the inhaled air passes the heat exchanger, and the other portion is communicated with the area

between the heat exchanger and the air vent or around the air vent.

17. The natural wind air-conditioning system of claim 1 wherein

the pressure wave dissipation means comprises a spray nozzle installed

such that the air fed through the suction duct is partially or wholly sprayed

while being at a predetermined angle with the direction of the wind passed the heat exchanger.

18. The natural wind air-conditioning system of claim 1 wherein the air vent is directed toward the front side as well as both the lateral sides

while enabling parts of the air vent directed toward the two lateral sides to be switched.

19. The natural wind air-conditioning system of claim 1 or 18

wherein the air vent is extended up and down and partitioned into two or three parts each with a grill, and the respective grills are controlled such that the wind flows passed therethrough proceed in different directions while enabling the lower-sided one or two grills to be switched.

20. The natural wind air-conditioning system of claim 1 wherein

one or more of the motors for the air blower and control fans are controlled by a controller such that the rotation speeds thereof are varied.

21. The natural wind air-conditioning system of claim 1 wherein

one or more partitions are provided between the air vent and the heat

exchanger such that the air flow therethrough is partitioned into two or more

parts.

22. The natural wind air-conditioning system of claim 1 or 21 wherein the air blower has one or more blow parts, and the central axes of the blow parts are at a predetermined plane angle as well as at a predetermined side angle with each other such that the wind flows from the respective blow parts interfere with each other to make the texture variation and turbulences of the wind effectively.

23. The natural wind air-conditioning system of claim 22 wherein the plane angle and the side angle between the central axes of the blow parts are determined in a variable manner, and the rotation speeds of the respective blow parts are the same or different from each other.