BACKGROUND OF THE INVENTION A cooling system is generally used for cooling at industrial facilities and air- conditioning of indoor in a variety of plant, factory, building etc., in which refrigerant circulates while doing the state change of compression, condensation and evaporation and lowers external temperature through heat exchange with outdoor air for this circulation process.

Fig. 1 is a structural view of conventional cooling tower type cooling system.

As illustrated hereupon, conventional cooling system includes a refrigerant circuit that refrigerant circulates and comprises a compressor 6, a condenser 8, an expansion valve 12, and an evaporator 14, and equips a separate cooling tower 2 that cools cooling water at air temperature.

When a circulation process of refrigerant at such conventional refrigerant circuit is reviewed, vapor refrigerant is compressed at the compressor 6, supplied to the condenser 8, then condensed to liquid refrigerant and is cooled. Liquid refrigerant is then supplied to the expansion valve 12 and expanded when passed through the expansion valve 12.

Later, when refrigerant that passes the expansion valve 12 passes the evaporator 14, it is actuated by heat exchange with surroundings.

That is, as heat that surrounding inhalation air or water possesses is passed to refrigerant from inhalation air or water, liquid refrigerant becomes at the vapor state by evaporating and inhalation air or water is cooled.

Such cooled inhalation air conducts air-conditioning on surroundings.

In the meantime, said condenser 8 condenses vapor refrigerant that gets out of the compressor 6 into liquid refrigerant and at this time much heat produce at said condenser 8.

Such produced heat is cooled by air at small size cooling system, but should be cooled by cooling water at medium size and large size cooling system, and at this time a separate cooling tower 2 is provided in order to cool cooling water that gets hot after being used.

That is, as cooling water (wl) that gets hot by conducting the cooling operation at the condenser 8 is supplied to the cooling tower 2 by the pump 4, it is cooled to cooling water (w2) of substantially the same temperature as air temperature at the cooling tower 2, then by being supplied to the condenser 8 again and conducts the cooling operation that cools the condenser 8.

Thus, in case of conventional cooling system, in order to cool vapor phase of refrigerant of high temperature, high pressure that is compressed at the condenser, there was problem that the establishment cost of the cooling system is ascending because the system should equip separately the cooling tower and a supply and receiver pipe, a pump and other apparatus for circulating cooling water to said cooling tower at the medium size and large size freezer.

Also, there was a problem that much water are wasted by supplementing circulating cooling water continuously because cooling water becomes insufficient as

cooling water evaporates at the process that lowers cooling water to air temperature at the cooling tower.

Also, there was a problem that puddle of the cooling tower is a hotbed in breeding of green algae and mold mode including legionella bacillus by being second breeding of various kinds of bacilli and generation of organic matter because foreign substance which is deposited and bacillus of air which permeates at puddle of cooling water of the cooling tower at the circulation process of cooling water to the cooling tower combine with warm water, warmed cooling water.

Furthermore, because said algae and fungi support formation of hard scale and are enabled a formation of dead space in which there is no oxygen and bacillus that can live without air creates hydrogen sulfide that cauterizes extremely metal structures of pipe etc. that is linked to the cooling tower and the cooling tower, the prior art have used a poisonous chemical substance to remove it, and, and there was a problem to stimulate corrosion of the equipment and cause extreme environmental pollution by doing chemical treatment with such poisonous chemical substance.

DETAILED DESCRIPTION OF INVENTION Hereupon, the present invention is proposed to solve all sorts of conventional problems. The purpose of the invention is to provide a cooling system that can establish simply and reduce expense by having no cooling tower.

Also, another purpose of the invention is to provide an economical cooling system that can save much water because supplementation of cooling water does not need.

Also, another purpose of the invention is to provide a environmental-friendly cooling system by sterilizing according to an electrochemical oxidation-reduction method by using no poisonous chemical substance in order to remove algae and fungi mode that

may generate in cooling water but using a transition metal material.

To accomplish said purposes, no cooling tower type cooling system capable of purifying cooling water by oxidation-reduction method according to a technical idea of the present invention is characterized by comprising a compressor for compressing to the high temperature high pressure state in which vapor refrigerant is apt to liquidize; a condenser for receiving vapor refrigerant that gets out of the compressor and making to liquid refrigerant ; a liquid receiver for receiving liquid refrigerant which condensed at the condenser and storing for a time; a first expansion valve for transferring to a first pipe liquid refrigerant that is stored at said liquid receiver and depressurizing to a evaporable state; an evaporator for circulating said vapor refrigerant to said compressor and air- conditioning while absorbing a latent heat from surroundings by receiving liquid refrigerant which is depressurized at said first expansion valve and evaporating to vapor refrigerant; a second expansion valve for transferring to a second pipe liquid refrigerant that is stored at said liquid receiver and depressurizing to a evaporable state; a cooling water of cooler for receiving liquid refrigerant that is depressurized at said second expansion valve, evaporating to vapor refrigerant and cooling cooling water to cool said condenser while circulating to said compressor; and a pump for supplying cooling water that cools said condenser to said cooling water of cooler from said condenser and circulating to said condenser cooling water that is cooled at said cooling water of cooler.

Here, it is possible that said cooling water of cooler equips at least one bent contact pipes of cooling water in which liquid refrigerant passes that is transferred from said second expansion valve and circulates to said condenser while being cooled as cooling water which is supplied to the pump from said condenser contacts an outer surface of said contact pipes of cooling water.

Also, it is possible that said cooling water of contact pipes are consisted of copper,

further comprising a plurality of zinc plates that are provided to guide the flow of cooling water while supporting said cooling water of contact pipes.

Also, said cooling water of cooler can be established by connecting a multiple pieces according to a temperature and a refrigeration ton amount to cool cooling water.

BRIEF DESCRIPTION OF THE DRAWINGS Further objects and advantages of the invention can be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which: Fig. 1 is a structural view of conventional cooling tower type cooling system.

Fig. 2 is a diagram showing a structure of no cooling tower type cooling system capable of purifying cooling water by an electrochemical oxidation-reduction method according to the present invention.

Fig. 3 is an internal structural view of cooling water of cooler that is provided at no cooling tower type cooling system capable of purifying cooling water by the electrochemical oxidation-reduction method with a transition metal material according to the present invention.

Fig. 4a is a reference view showing a hard scale of acicular shape attaching to general pipe wall prior to electrochemical oxidation-reduction processing.

Fig. 4b is a reference view showing a hard scale of a sphere shape that does not attach at a pipe wall after oxidation-reduction processing with transition metal components that are consisted of copper and zinc of a high degree of purity.

Fig. 5 is a perspective view of a plurality of cooling water of coolers of Fig. 3.

BEST MODE FOR IMPLEMENTING THE INVENTION

Below, an embodiment according to a technical idea of the invention as noted above will be described in detail with reference to the accompanying drawings.

Fig. 2 is a diagram showing a structure of no cooling tower type cooling system capable of purifying cooling water by an electrochemical oxidation-reduction method according to the present invention and Fig. 3 is an internal structural view of cooling water of cooler which is provided at no cooling tower type cooling system capable of purifying cooling water by electrochemical oxidation-reduction method with the transition metal material according to the present invention.

As shown to Fig. 2, no cooling tower type cooling system capable of purifying cooling water by oxidation-reduction method according to the present invention has a structure in which the compressor 6, the condenser 8, the liquid receiver 10, the first expansion valve 12, and the evaporator 14 are linked by series, and includes cooling water of cooler 20 that cools cooling water that cools said condenser 8 by being supplied liquid refrigerant that is stored to said liquid receiver 10 and circulates to said compressor 6.

If said each structural element is explained concretely, as said compressor 6 maintains at low temperature constantly within the evaporator 14 and compresses to the state of high temperature high pressure that vapor refrigerant is apt to liquidize, vapor refrigerant that is inhaled by the compressor 6 is compressed within the cylinder consisting of the compressor 6, thus its pressure is raised to the pressure of the condenser 8.

Also, as said condenser 8 makes vapor refrigerant that gets out of the compressor 6 to liquid refrigerant, at this time it radiates much quantity of heat.

Also, as said liquid receiver 10 stores for a time liquid refrigerant which condensed at the condenser 8, running of a freezer is done smoothly even though the amount of refrigerant changes that is consumed in the evaporator 14 by the liquid receiver

10.

Also, as said first expansion valve 12 depressurize liquid refrigerant that is stored to the liquid receiver 10 to the evaporable state, it depressurizes to the evaporable state through the throttling process at the first expansion valve 12 refrigerant that gets out of the liquid receiver 10 through the first pipe 11.

This first expansion valve 12 is a kind of throttle valve, has two functions of a decompression function and a control function of flow quantity of refrigerant, and a capillary tube is used instead of said expansion valve at small size refrigerator (household refrigerator, etc.).

Also, said cooling water of cooler 20 receives liquid refrigerant that is stored to said liquid receiver 10, cools cooling water that cools said condenser 8 and circulates to said compressor 6.

Here, between said liquid receiver 10 and said cooling water of cooler 20, the second expansion valve 13 is provided in order to depressurize liquid refrigerant that is stored to the liquid receiver 10 to the evaporable state. Liquid refrigerant that gets out of said liquid receiver 10 is transferred to said second expansion valve 13 through the second pipe 15.

Also, the pump 4 is provided that supplies cooling water that cools said condenser 8 to said cooling water of cooler 20 from said condenser 8 and circulates cooling water that is cooled at said cooling water of cooler 20 to said condenser 8.

Because the present invention uses refrigerant even at cooling water of cooler 20 as well as at the evaporator 14 thus, the invention requires the compressor, the condenser, the liquid receiver etc. of bigger capacity than the existent cooling system and more quantity of refrigerant, but it is desirable to compose the invention with the size of about 1.3 times than the existent cooling system.

In the meantime, said cooling water of cooler 20, as illustrated to Fig. 3, equips at least one bent cooling water of contact pipes 21 in which liquid refrigerant that is transferred from said second expansion valve 13 passes, and cooling water that is supplied to the pump from said condenser 8 circulates to said condenser 8 while contacting outer surface of said cooling water of the contact pipe 21 and being cooled.

This time, said cooling water of contact pipe 21 is consisted of copper and further comprises a plurality of zinc plates 23 which are established to guide the flow of cooling water while supporting said cooling water of contact pipe 21.

At said zinc plates 23, many piercing holes 24 are formed so that said cooling water of contact pipe 21 may be inserted and supported.

As copper consisting of said cooling water of contact pipe 21 and zinc consisting of a plurality of zinc plates 23 exchange the electron by ion exchange of anode and cathode in water, oxidation-reduction reaction is conducted very fast and actively, thus they do the electrochemical oxidation-reduction action.

That is, copper and zinc of a high degree of purity prevent water-soluble oxidized steel as transition metal components or prohibit corrosion, and take away bacillus, virus, algae, legionella by making an electric field and magnetic field in which bacillus etc. do not live with electrochemical oxidation-reduction process. Heavy metals achieve function of heavy metals removal in water and bacillus sterilization etc. with the tendency in which heavy metals adsorb to itself. Also, said copper and zinc control so that organic material does not attach inside or at pipe of said cooling water of cooler 20 by disturbing ion bond of organic material of underwater by oxidation-reduction action.

In the meantime, as zinc is-0.76V in standard electrode potential and copper is +0. 34V, a potential difference of 1. 1V is produced between copper and zinc. As zinc reacts more actively than copper, zincs becomes anode and copper becomes cathode at

copper and zinc of a high degree of purity, thereby oxidation-reduction reaction is done very actively, thus hazardous substances become harmlessly or adsorb to itself, and a fatal survival environment is provided to bacillus of bacterium and so on.

That is, as zinc consisting of a zinc plate, a structure within cooling water of cooler 20 in which ionization is active than iron and copper ionizes prior to iron through discharging the electron continuously, prevention of oxidized steel (rust) achieves. This time, the electron that is produced at zinc changes rust to magnetite by reacting with rust and small quantity of rust already formed are washed by pressure of cooling water.

In the meantime, metal ions (Ca, Mg, Na etc.) of inorganic matter in cooling water create scales with a temperature change according to heating and cooling. The scale is the form of acicular structure of about 7/im, but changes to a sphere structure form of about 1 zum by disturbing bonding of inorganic metal ion with oxidation-reduction reaction in cooling water of copper and zinc at cooling water of cooler 20, thus it is not attached at inner wall of cooling water of cooler 20, inner wall of pipe between cooling water of cooler 20 and inner wall of the condenser 8 or inner wall of the condenser 8.

Also, metal ions of inorganic matter are deposited to solid (CaC03, MgCO3, etc.) or generate C03 and water, which convert existent formed scales to calcium hydrogen carbonate Ca (HC03) 2 like the principle that limestone melts in natural conditions and are removed by dissolving in cooling water. This time, zinc achieves perfectly prevention and removal of scale and rust by causing continuous ionization phenomenon to constant distance and time through discharging the electron unceasingly actively than any metal.

Also, at inner wall of pipe, thin protection membrane of about 0.03mm is created and protects pipe.

Therefore, said cooling water of contact pipe 21 is consisted of copper, as cooling water circulate to contact said copper and zinc by establishing a plurality of zinc plates 23

at outside of said cooling water of contact pipe 21, by oxidation-reduction reaction of copper and zinc, it is possible to prevent or control oxidized steel and scale and make chlorine, hydrogen sulfide and heavy metals (iron, lead, mercury) etc. in cooling water to chloride or sulfide or remove through adsorbing, thus the environment is made in which bacilli can not live, thereby bacilli are died.

Said cooling water is replaced in order to discharge floating rust or scale deposits to outside after a certain time.

If such replacement of cooling water achieves at an interval of constant period for the first several months in order to wash scales at existent pipe, then replacement of cooling water does not need.

Fig. 4a is a reference view showing a hard scale of acicular shape attaching to general pipe wall prior to electrochemical oxidation-reduction processing and Fig. 4b is a reference view showing a hard scale of a sphere shape that does not attach at a pipe wall after oxidation-reduction processing with transition metal components that are consisted of copper and zinc of a high degree of purity.

It shows that to purify water with transition metal components, it is possible to control so that hard scale (h) may not attach to pipe wall.

In the meantime, Fig. 5 is a perspective view of a plurality of cooling water of coolers of Fig. 3.

Like this, it is possible to establish by connecting to a multiple pieces according to temperature and refrigeration ton amount to cool said cooling water of cooler 20 with cooling water.

By doing so, if said cooling water of cooler 20 is separated and established to a plurality of cooling water of contact pipes 21 by considering establishment space, said cooling water of cooler 20 can establish efficiently in even small space.

Operation of no cooling tower type cooling system capable of purifying cooling water with oxidation-reduction method according to the present invention constructed like this will be described in detail with reference to the accompanying drawings.

First, referring to Fig. 2, at the compressor 6 vapor refrigerant compresses in the state of high temperature high pressure that is apt to liquidize. Said compressor 6 commonly equips a compression cylinder, thus inhales and compresses vapor refrigerant at this compression cylinder.

Then, vapor refrigerant which gets out of said compressor 6 is condensed to liquid refrigerant through radiating of heat at the condenser 8 and liquid refrigerant which condensed at the condenser 8 is stored for a time to the liquid receiver 10.

Part (ml) of liquid refrigerant that is stored to said liquid receiver 10 absorbs a latent heat of surroundings and air-conditions surroundings by being supplied to the evaporator 14 over the first expansion valve 12 through the first pipe 11, is evaporated to vapor refrigerant and is supplied to compressor 6 again, thereby is circulated.

Remaining part (m2) of liquid refrigerant that is stored to said liquid receiver 10 is not supplied to said evaporator 14 and is supplied to cooling water of cooler 20 through the second pipe 15.

This time, the second expansion valve 13 is established between said liquid receiver 10 and said cooling water of cooler 20, thereby supplies to cooling water of cooler 20 by depressurizing liquid refrigerant that is stored to liquid receiver 10 to evaporable state.

In the meantime, surroundings of liquid refrigerant that is supplied to said cooling water of cooler 20 comes in contact with cooling water (wl) that gets hot by conducting cooling operation at said condenser 8, cools with cold cooling water (w2) and cooled cooling water (w2) is again circulated to the condenser 8.

Pump 4 is used in order to supply to cooling water of cooler 20 cooling water (wl) that gets hot at said condenser 8.

Here, liquid refrigerant that is supplied to said cooling water of cooler 20 evaporates while cooling said cooling water and, thereby it becomes vapor refrigerant (m3), then is supplied to compressor 6 again and is circulated again.

That is, part (ml) of liquid refrigerant (m) that is supplied to said liquid receiver 10 is supplied to the evaporator 14, thereby achieves air-conditioning by cooling surrounding air and remaining part (m2) is supplied to cooling water of cooler 20, thereby cools cooling water that cools the condenser 8.

In the meantime, like in Fig. 3, in case that said cooling water of cooler 20 equips at least one bent cooling water of contact pipes 21 in which liquid refrigerant passes and which are consisted of copper and a plurality of zinc plates 23 which are established in Drder to guide the flow of cooling water while supporting said cooling water of contact pipes 21, cooling water that is supplied to the pump from said condenser is cooled while contacting to zigzag on outer surface of said cooling water of contact pipes 21 to guidance of said zinc plates 23 and is circulated to said condenser.

This time, cooling water contacts a plurality of zinc plates 23 and copper consisting of said cooling water of contact pipes 21. Copper of cooling water of contact pipes 21 and zinc of zinc plates 23 do electrochemical oxidation/reducing action by exchanging the electron with ion exchange of anode and cathode in cooling water, thereby prevent generating of water-soluble oxidized steel or inhibit corrosion, and take away bacillus, virus, algae, legionella by making electric field and magnetic field that bacillus etc. do not live by electrochemical oxidation-reduction process. Heavy metals remove heavy metals in water and sterilize bacillus with the tendency that heavy metals adsorb to itself and disturb ion bond of inorganic material in cooling water, thereby control so that

inorganic material does not attach inside or pipe of said cooling water of cooler.

As such structure, the present invention does not need to establish a cooling tower in order to cools cooling water like the prior art and it does not needs to use poisonous chemical substance to purify cooling water, thus it can provide environment-friendly cooling system.

Also, as the invention cools cooling water even without separate cooling tower by such construction of the invention, it can establish the cooling system simply and reduce establishment cost greatly.

Although preferred embodiments of the present invention has been described, various modifications, variations and equivalents may be used for the present invention.

Manifestly, the above embodiments of the present invention may be properly modified and applied equivalently. Therefore, the above descriptions are not for limiting range of the present invention defined by means of the accompanying claims.

INDUSTRJAL AVAILABILITY As described above, since the cooling system according to the present invention can cool cooling water even without a cooling tower, it can save establishment cost of cooling system and establish the cooling system efficiently. Also, as the present invention needs not to supplement cooling water separately, it prohibits consumption of water, thereby it can construct the economical and simple cooling system, thus can save resources nationally.

Also, as the cooling system according to the present invention does not use poisonous chemical in order to remove algae, fungi and heavy metals etc. that generate in cooling water and adapts harmless transition metal material to cooling water of cooler, it can construct environment-friendly cooling system.

"Stockholm agreement"that comes into effect on May 19,2001, in which 90 nations of world signed, prohibits use of poisonous chemical substance, thus the cooling system according to the present invention can meet in a worldwide environment protection trend.