KR101600952B1 - Counterflow cooling tower having a multiple fan - Google Patents

Abstract

The present invention relates to a counterflow tower having multiple blower fans and, more specifically, a counterflow tower having multiple blower fans comprises: multiple openings (9a, 9b) which are formed in an upper casing (2b) and have at least one shape among a rectangular shape and a circular shape; a counterflow heat exchange unit which is disposed in a heat exchange area (5a) to cool a high-temperature fluid flowing in from a cooling load unit (300) through a high-temperature fluid supply pipeline (111); a watering unit (30) which is disposed in a watering area (6a) and includes a fluid distribution main pipe (32) having a fluid inlet (31) and a fluid distribution pipe (32) branched from the fluid distribution main pipe (32) and having multiple watering nozzles (34); an eliminator (28) which is disposed at the upper portion of the watering unit (30); multiple blower fans which are provided to be attachable to and detachable from the upper casing (2b) adjacent to the openings (9a, 9b), and includes a fan cylinder unit having a fan cylinder (64) and any one among a rectangular fan deck and a cylinder flange provided at one end of the fan cylinder (64), a fan blade (61) accommodated in the fan cylinder (64), and a fan motor driving the fan blade (61); a blower fan attachment and detachment unit which mounts and separates (or opens) the blower fans; and an outside air inflow block unit which blocks the bypass inflow of outside air through the fan cylinder (64) of the blower fan of which the operation is interrupted by breakdown or load control among the blower fans and prevents a decrease in cooling efficiency.

Description

[0001] Counterflow cooling tower having multiple blowing fans [

The present invention relates to a countercurrent cooling tower, and more particularly to a countercurrent cooling tower capable of preventing bypassing of outside air through a plurality of blowing fans disposed in an upper casing (2b) covering an upper portion of a cooling space, It is possible to reduce the exhaust flow slowing region (heat exchange lowering region) of the heat exchanging portion and to flow the exhaust more uniformly, thereby improving the blowing and heat exchanging efficiency, and more economically and efficiently responding to the cooling load fluctuation It is possible to reduce the amount of white smoke and efficiently construct a plurality of blowing fans in a cooling cell structure such as a square, a rectangle and a circle, to easily secure the installation place of the cooling tower, It is possible to easily mount and separate the blowing fan, reduce the operation noise and vibration of the blowing fan, It is possible to prevent the cooling operation failure (stopping the cooling tower operation) caused by the cooling fan, to easily repair (repair) the broken fan fan while the cooling tower is in operation, to reduce the consumption power of the fan and to save water, And more particularly to a countercurrent cooling tower having multiple blowing fans that can save costs.

Generally, air conditioning equipment and refrigeration. Refrigerators or industrial heat exchangers operated in refrigerators or the like are accompanied by waste heat to be removed which is transferred from the hot fluid (or refrigerant) flowing in the cooling tower to the cooling air and discharged to the atmosphere.

The heat rejection type of the cooling tower is caused by evaporation of a part of hot fluid in a wet cooling open type heat exchanger in which hot fluid and cooling air are in direct contact with each other and heat exchange occurs Evaporative cooling to cool the hot fluid by latent heat of evaporation,

(Air) and fluid (cooling water) flowing on the outer surface of a closed heat transfer tube in a wet cooling closed-circuit type heat exchanger which performs cooling heat exchange of a high-temperature fluid (or a refrigerant) (Or condensing) a high temperature fluid (or a refrigerant) flowing through the heat pipe through the contact of the high temperature fluid (or the refrigerant) through the tube wall, the evaporated cooling of the high temperature fluid flowing through the heat transfer tube, Dry cooling to cool the high-temperature fluid with sensible heat, and hybrid cooling type heat exchanger to combine the wet cooling heat exchanger and the dry cooling heat exchanger. And wet-dry hybrid cooling to cool the hot fluid.

And the cooling action can be divided into fluid cooling which lowers the temperature of the liquid (hot fluid, cooling oil, etc.) and fluid condensation which condenses by cooling the gas (refrigerant gas, steam, etc.) .

In addition, the refrigerant air and fluid flow system includes a counter flow type in which the cooling air flows upward and a fluid flows downward, a cross flow type in which the cooling air flows horizontally and a fluid flows downward, type, and a parallel flow type in which cooling air and fluid flow in the same direction.

The ventilation system is a natural draft type that uses rising wind force due to difference in the inner and outer air density of natural wind or tower, a mechanical draft type that forced air through a blowing fan, , And an ejector draft type in which air is blown using a cooling fluid injection attractive force of an ejector.

In addition, the air blowing type is an induced draft type in which high temperature cooling air (hereinafter referred to as "exhaust") that has undergone heat exchange in the heat exchanging portion is sucked and discharged to the outside, And a forced draft type in which exhaust gas after heat exchange in the heat exchange section is discharged to the outside.

The discharge method of the exhaust includes a vertical exhaust type which vertically upwardly discharges through a fan cylinder vertical to the upper casing, a horizontal exhaust which horizontally discharges through a fan cylinder configured horizontally in the side casing (Horizontal exhaust type).

In addition, the blowing fan type can be classified into an axial type fan generally used in a suction ventilation type and a centrifugal type fan used in a press-in ventilation type.

In addition, the driving method of the blowing fan can be classified into a belt drive type, a gear reducer drive type, and a direct drive type.

The suction ventilated countercurrent cooling tower, which is the object of the present invention, It has advantages of high heat exchange efficiency, small installation area, low recirculation, low windage drift loss, water pollution due to photosynthesis of sunlight and reduction of hardening loss of PVC heat exchanger part. It is also widely used in the field of industrial cooling.

The casing (or cooling space) structure of the suction ventilated countercurrent cooling tower is generally divided into a square type and a round type, and the casing of the press-through ventilated countercurrent cooling tower (cell)} structure is generally a rectangle type.

The suction ventilated countercurrent cooling tower includes a countercurrent heat exchanger arranged in the size of the entire plane of the heat exchange area in one cooling space formed inside the side casing and the upper casing, and disposed in the upper spray water area of the countercurrent heat exchanger A typical unit cooling tower composed of a water spraying unit which sprays over the entire upper surface of the countercurrent heat exchanging unit, an eliminator which is disposed on the upper part of the water spraying unit to cover the entire upper surface of the water spraying unit, One cooling fan, one heat exchanger, one water sprayer, and one eliminator in a single cooling space.

Such a counterflow type cooling tower enlarges and combines the number of unit cooling towers to increase the cooling capacity. For example, in the case of a cooling tower of 500 CRT x 6 cells, it becomes a 3,000 CRT cooling tower in which 6 cooling towers of 500 CRT units are expanded.

In the unit cooling tower, the structure of a single air flow path and the operation thereof are provided with a single air blowing fan.

Therefore, the unit cooling tower stops operation of the cooling tower until the failure of the blowing fan is completed when the blowing fan fails.

Next, the induction draft type counterflow condeser is based on the provision of a plurality of blowing fans for the purpose of coping with the trouble of the blowing fan and downsizing the blowing amount, but it is also possible that the bypass blowing fan And the lowering of the cooling efficiency has been regarded as a usual problem.

Next, it is expected that the Internet data center (IDC), the mobile communication switching center, the computer center, the large department store, the semiconductor manufacturing facilities requiring constant temperature and humidity, The number of buildings (facilities) in which cooling loads are generated is increasing, the heat loss through the building structure is reduced due to the insulation of the building structure and the air tightness, and the amount of heat generated from the lighting and office automation equipment is increased, (Buildings) are also intermittently cooling in winter, and the cooling period is expanding from summer to mid-season. As a result, it also cools the middle season between winter and winter with low outdoor temperature Demand is increasing.

Figures 3a and 3b of U.S. Pat. No. 6,142,219 cited as a reference are specific descriptions of the eastern United States of America with similar seasonal and climatic conditions to Korea, and reference drawings made by subjoining the description in these drawings. (MODE 1) time is 70.3%, annual wet cooling operation - adiabatic saturator use (MODE 2) time is 17.7%, annual wet cooling Operation - The wet coil usage (MODE2) time is 12.0%, indicating the cooling tower operation mode for a year.

That is, 6,158 hr (8.4 months) out of the total annual time (8,760 hrs) is covered by the dry cooling operation (MODE 1).

Here, the use of the wet cooling operation-adiabatic saturator (MODE2) is considered to be the action of a wet heat exchanger filler that cools the hot water cooled down after heat exchange from the closed heat exchanger coil.

As described in reference 1, the water consumption is reduced in proportion to the dry cooling period, and the consumption power of the sprinkling pump can be reduced and the prevention of the occurrence of white smoke can be accompanied.

Reference drawing 1: Comparison of typical annual temperature profile, operating mode and water consumption

(Source: US 6,142,219 / Closed circuit heat exchange system and method with reduced water consumption)

The water and power energy reduction and white smoke reduction of the cooling tower described above can be achieved by a hybrid cooling system having a wet cooling operation and a dry cooling operation of the closed type heat exchanger It is effective against other single cooling methods (wet cooling or dry cooling).

Here, the dry operation is an operation in which the supply of the fluid to the water spraying portion is interrupted so that the wet cooling operation of the open type heat exchange portion is stopped, and only the outside air with low humidity is blown without the cooling heat exchange action and passes through the heat exchange portion When combined with a saturated humidifier that has passed through the heat transfer through a low humidity outside air and wet cooling, the humidity of the saturated humidity humidifier is reduced and the occurrence of white dust is reduced correspondingly.

In order to realize the reduction of water and power energy and reduction of white smoke, it is necessary to control (suppress) the unnecessary wet cooling period and maximize the acceptable dry cooling period and to subdivide one unit cooling tower, Accordingly, there is a need for a technical problem that allows cooling to be performed more economically and efficiently.

Hereinafter, the conventional countercurrent cooling tower and the white smoke reducing closed countercurrent cooling tower will be described below with reference to the accompanying drawings.

For the same or similar constitution as that of the present invention shown in the drawings of the prior art, the symbols and names described in the present invention are applied instead of the names and symbols for convenience of contrast, and will be described accordingly.

15 is a schematic side view of a countercurrent cooling tower having a conventional blower fan.

Hereinafter, the countercurrent cooling tower having the conventional blowing fan of Fig. 15 will be referred to as " known technology 1 ".

The known technology 1 is a typical structure of the suction blowing countercurrent cooling tower 1h and is formed in one cooling space formed inside the side casing 2a and the upper casing 2b as shown in the figure A heat exchange zone 5a, a water spray zone 6a and an exhaust zone 7a;

A feed mechanism 3 formed in one area of the side casing 2a and an opening 9b formed at the center of the upper casing 2b;

A water collecting tank (12) disposed at a lower portion of the side casing (2a) and having a cooling fluid outlet in one area;

An open type countercurrent heat exchanger (20a) disposed in the heat exchange area (5a) for cooling the high temperature fluid flowing through the high temperature fluid supply pipe;

A water spraying part 30 disposed in the water spraying area 6a formed on the upper part of the countercurrent heat exchanging part 20a and spraying cooling water to the counterflow heat exchanging part 20a;

An eliminator 28 disposed above the water spraying unit 30;

And a blowing fan (60) for discharging the heat-exchanged exhaust passing through the countercurrent heat exchanging part (20a) to the outside through the opening (9b).

The countercurrent cooling tower 1g of the prior art 1 has one countercurrent heat exchanger 20a arranged in the size of the entire plane of one heat exchange zone 5a, A water spraying unit 30 disposed on the water spraying unit 6a and sprinkling over the entire upper surface of the counterflow heat exchanging unit 20a and a water spraying unit 30 disposed on the water spraying unit 30 to cover the entire upper surface of the water spraying unit 30. [ And one blower fan 60 for discharging the exhaust gas that has passed through the counterflow heat exchanger 20a to the outside.

Hereinafter, the operation according to the configuration of the well-known technique 1 will be estimated and briefly explained.

In the countercurrent cooling tower 1h of the known technology 1, the high-temperature fluid flowing from the cooling load section through the high-temperature fluid supply conduit is sprayed to the countercurrent heat exchanging section 20a through the spraying section 30, Exchanged with the cooling air while passing through the countercurrent heat exchange unit 20a, and the cooled cooling fluid is supplied to the cooling load unit through the cooling fluid supply pipe.

On the other hand, the exhaust of the saturated moisture vaporizer after the heat exchange is discharged to the outside through the eliminator 28 and the blowing fan 60.

This process can be repeated as long as the cooling tower is operating.

The known art 1 has a single exhaust flow path through which a single blowing fan sucks and exhausts the entire amount of exhaust through the exhaust area 7a.

16 is a schematic side view of a conventional evaporative condenser having multiple blowing fans.

Hereinafter, an evaporative condenser having the conventional multiple blowing fan of FIG. 16 will be referred to as " known technology 2 ".

Unlike the above-described embodiment, in the known art 2, as shown in the drawing,

An air supply region 4, a heat exchange region 5a, a water spraying region 6a and an exhaust region 7a formed in one cooling space formed inside the side casing 2a and the upper casing 2b;

A feed mechanism 3 formed in one area of the side casing 2a and a plurality of openings 9b formed in the upper casing 2b;

An enclosed countercurrent heat exchange unit (20b) arranged in the heat exchange zone (5a) for cooling heat exchange the flowing hot fluid and having a fluid inlet (21) and a fluid outlet (24);

A water spraying unit 30 disposed in the spraying area 6a to spray the fluid introduced through the spraying pump 15 and the fluid supply pipe 16 to the counterflow heat exchanging unit 20b;

A water collecting tank 12 disposed below the hermetic heat exchanging unit 20b and having a cooling fluid outlet 13 in one area;

The exhaust gas flowing into the exhaust region 7a is exhausted to the outside while the air supply is introduced through the air supply mechanism 3 formed in the side casing 2a and the heat exchange is completed, An evaporative condenser 1i having multiple blowing fans including a plurality of blowing fans 60 is known.

The evaporative condenser 1h having the multiple blowing fans of the known art 2 includes one closed type countercurrent heat exchanger 20b arranged in the size of the entire plane of one heat exchange zone 5a, A water spraying part 30 disposed in the upper water spraying area 6a of the counterflow heat exchanging part 20b and sprinkling over the entire upper surface of the counterflow heat exchanging part 20b, And a plurality of blowing fans 60 for discharging exhaust gas that has passed through the countercurrent heat exchanging unit 20b to the outside of the evaporator 20, .

Hereinafter, the operation according to the configuration of the well-known art 2 is estimated and briefly explained.

In the evaporative condenser 1i having the multiple blowing fans of the known technology 2, the high temperature fluid flowing from the cooling load portion through the high temperature fluid supply conduit flows to the countercurrent heat exchanging portion 20b while performing the cooling heat exchange, Is supplied to the cooling load through the cooling fluid supply line.

On the other hand, the cooling water stored in the water collecting tank 12 is supplied to the water spraying unit 30 through the fluid supply pipe 16 and the water spray pump 15, and the water sprayed from the water spraying unit 30 to the counterflow heat exchanging unit 20b Exchanges heat with the supply air flowing through the supply mechanism 3, and the heat-exchanged fluid is recirculated through the water collecting tank 12, the fluid supply pipe path 16 and the water spray pump 15.

The exhaust of the saturated moisture vaporizer after the heat exchange is discharged to the outside through the eliminator 28 and the plurality of blowing fans 60.

This operating procedure can be repeated as long as the evaporative condenser is operating.

The known art 2 has a plurality of exhaust passages through which a plurality of blowing fans suck and discharge the entire amount of exhaust through the exhaust area 7a.

17 is a schematic side view of an air-cooled condenser having a conventional multi-ventilation fan.

Hereinafter, the air-cooled condenser having the multiple blowing fans of Fig. 17 will be referred to as " Known Technique 3 ".

Unlike the above-described embodiment, in the known technology 3, as shown in the drawing,

One cooling space formed inside the side casing 2a and the upper casing 2b;

A plurality of openings formed in the upper casing 2b;

A louver 11 'which is formed by opening one region of the side casing 2a and into which an air supply flows;

A dry countercurrent heat exchanger (40) for cooling heat exchange the hot fluid flowing in the cooling space;

The exhaust gas flows into the louvers 11 'formed in the side casing 2a and exhausts the exhaust gas flowing in the plurality of opening directions to the outside,

And an air cooling type condenser 1j having multiple blowing fans including a plurality of blowing fans 60 provided in the plurality of openings is known.

Hereinafter, the operation according to the configuration of the well-known art 3 is estimated and briefly explained.

In the air-cooled condenser 1i having the multi-blow fan of the known technology 3, the high-temperature fluid flowing from the cooling load portion through the high-temperature fluid supply conduit flows to the countercurrent dry heat-exchanging portion 40 to form a cooling heat- Is supplied to the cooling load through the cooling fluid supply line.

The high-temperature exhaust after heat exchange is discharged to the outside through a plurality of blowing fans 60.

This operation process can be repeated as long as the air-cooled condenser 1j is operated.

The known technology 3 has a plurality of exhaust passages through which a plurality of blowing fans suck and discharge the entire amount of exhaust through a cooling space.

However, the above-mentioned prior arts have the following problems.

The countercurrent cooling tower 1h such as the known technology 1 has a structure in which a quadrangular cooling structure is applied, and there is a disadvantage in securing the installation place compared to a cooling structure of a rectangular structure. {Rectangular cooling space When a blower fan is constructed in a cell structure, there may be a balance in the air flow in the long side and the short side.

As shown in FIG. 1, there is a problem in that a single large blower fan increases the additional height ah of the cooling tower compared to the multiple blower fan structure.

In addition, it is difficult to install and detach the blowing fan according to a single large blowing fan, and the noise and vibrations of the blowing fan greatly increase compared to the structure of the multi-blowing fan.

The open-type countercurrent heat exchanger 20a can not be combined with the dry-type cooling operation, so that water and power energy savings through the dry cooling operation can not be realized and the operation of reducing white smoke is also impossible.

In addition, since one unit cooling tower 1g can not be operated in divided units in accordance with the variation of the outside temperature and the cooling load, there is a problem that the cooling operation can not be performed in a more economical and load variable and efficient manner.

2, the distance da between the corners of the cooling cell in the circumference of the fan cylinder of the multi-blowing fan and the distance between the corners of the cooling chamber in the circumference of the single blow fan fan cylinder of the prior art 1 db, there is a limit in narrowing the interval db, so that it is difficult to reduce the suction slowing region and there may be a decrease in the heat exchange efficiency.

There is a problem that it is difficult to repair (repair) the failed blowing fan 60 during operation of the cooling tower 1h.

The cooling tower 1g can not be operated until the failure of the single blowing fan 60 is completed until the failure of the blowing fan 60 is completed and the production failure due to the operation stop of the cooling tower 1g Failure) is a serious problem.

Next, an evaporative condenser 1i having multiple blowing fans such as the known art 2 and an air-cooled condenser 1j having multiple blowing fans such as the known art 3 are connected to one or a plurality of blowing fans 60 in operation The flow resistance of the outside air flowing through the fan cylinder of the failed blowing fan 60 is significantly lower than the flow resistance of the exhaust passing through the heat exchanging portion 20b when the operation is stopped due to the failure of the blowing fan 60 The bypass ambient air having a low flow resistance is discharged to the outside through the fan cylinder of the fault blowing fan 60, the exhaust area 7 and the other blowing fan 60 in operation, while the heat exchanger The amount of exhaust (flow) of the exhaust gas (or the supply of air through the air supply mechanism 3) that has passed through the exhaust ports 20a and 20b is reduced and the heat exchange efficiency is lowered.

In addition, there is a problem that it is difficult to control the number of operations (ON) / operation stop (OFF) of a plurality of blowing fans in accordance with the load fluctuation.

In the known technologies 2 and 3, one unit condenser 1i and 1j can not be operated in divided units according to the variation of the outside air temperature and the cooling load, so that cooling can be performed more economically and efficiently There is a problem such that it can not be done.

Patent Document 1: U.S. Patent No. 5,585,047 (December 17, 1996) Patent Document 2: JP-A-2001-91102 (Apr. 26, 2001) Patent Document 3: U.S. Patent No. 8,413,461 (Apr. 19, 2013)

Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-mentioned problems of the known art,

It is an object of the present invention to provide an air conditioner capable of preventing the detouring of outside air through a plurality of blowing fans disposed in the upper casing 2b and preventing the cooling efficiency from being lowered and preventing the exhaust flow slowing region It is possible to improve the blowing efficiency and the heat exchange efficiency by more uniformly flowing the exhaust gas at the same time as the cooling operation can be performed and cooling can be performed more economically and efficiently according to the cooling load fluctuation and the white smoke can be reduced, It is possible to efficiently constitute a plurality of blowing fans in a cooling structure such as a circular shape and to secure the installation place of the cooling tower and to reduce the height of the cooling tower and to easily mount and separate the blowing fan It is possible to reduce the operation noise and vibration of the air blowing fan and to prevent the cooling operation failure (cooling tower operation stop) due to the failure of the blowing fan, A countercurrent cooling tower with multiple blowing fans that can easily repair (repair) a failed blower fan during operation of the tower, reduce the power consumption of the blower fan, save water, and save operating and maintenance costs. .

According to the present invention, the above-mentioned object can be achieved by providing a heat exchanger comprising a supply space (4), a heat exchange area (5a), a water spraying area (6a) and an exhaust area (7a) And an upper casing 2b closing the upper end of the side casing 2a.

A feed mechanism (3) formed in one area of the side casing (2a);

A plurality of openings (9a, 9b) formed in the upper casing (2b) and having either a square shape or a circular shape;

A water collecting tank (12) disposed below the side casing (2a) and having a cooling fluid outlet (13) in one region;

A countercurrent heat exchanger arranged in the heat exchange zone (5a) for cooling a high temperature fluid flowing from the cooling load unit (300) through the high temperature fluid supply pipe line (111);

A fluid distribution tube 32 disposed in the spraying area 6a and having a fluid distribution vessel 32 having a fluid inlet 31, a fluid distribution tube 32 branched from the fluid distribution vessel 32 and having a plurality of spray nozzles 34, A water spraying portion 30 which is composed of a spray nozzle 30;

An eliminator 28 disposed above the water spraying unit 30;

The fan cylinder 64 is provided in a detachable structure in the upper casing 2b adjacent to the openings 9a and 9b and has either a fan deck or a cylinder flange provided at one end of the fan cylinder 64 A plurality of blowing fans having a fan motor for driving the fan blades 61;

A blowing fan attaching / detaching unit for attaching and detaching (or opening) the blowing fan;

And an outside air inflow blocking portion for blocking bypassing of outside air through the fan cylinder 64 of the blowing fan whose operation is stopped due to failure or load control among the plurality of blowing fans, Lt; RTI ID = 0.0 > multi-air cooling < / RTI >

Here, the cooling space is a unit cooling space inside the side casing 2a and the upper casing 2b, and may be formed in a square, rectangular, circular or elliptical shape having a flat cross-sectional shape.

One side of the side casing (2a) facing the side casing (2a) and the exhaust area (7a) facing the air supply area (4) is provided with an air supply area (4) (Access door) 17 so as to be able to enter and exit the door 7a.

The air supply mechanism 3 may further include a louver 8 for smoothly guiding the air supply to the air supply region 4 and preventing the cooling water from leaking out.

Next, as shown in Fig. 3, the circular opening 9b is provided with an intake port 65 (see Fig. 3) formed at the lower end when mounting and dismounting the buried fan cylinder portion 63b, which is disposed in the exhaust region 7a, (D2) of the intake port (65) can be formed to be larger than the diameter (d1) of the intake port (65) so as to easily enter and exit the exhaust region (7a).

In order to further reinforce the self-support of the opening and the support of the blowing fan, the plurality of openings 9a and 9b are provided with an opening jaw 2c having a predetermined height around the opening, Can be formed.

Here, the opening jaw 2c is preferably formed so as to protrude to the outside of the upper casing 2b, but may be formed to protrude inward.

The diameter or width of the openings (9a, 9b) is preferably such that the size of the openings (9a, 9b) is such that the operator can enter and exit the apparatus after the blowing fan is separated as required.

Next, the cooling load unit 300 includes an air handling unit that receives cooling water (cold water produced by a refrigerator or cold produced from outside air) to cool and heat-exchange indoor air, At least one cooling device and its associated device (pump), such as a thermohygrostat, a fan coil unit, an Internet data center (IDC) cooling unit, a water cooled cooler, , A control section, a fluid duct, a control valve, etc.).

Next, the high-temperature fluid supply pipe 111 for supplying the high-temperature fluid from the cooling load unit 300 may be provided with the high-temperature fluid supply device 200.

Here, the high-temperature fluid supply device 200 is constituted by a hot water circulation pump when the fluid to be cooled flowing into the high-temperature fluid supply conduit 111 is cooling water, In the case of gas, it is composed of a compressor.

Next, a sump for collecting and discharging a cooling fluid may be further provided between the cooling fluid outlet 13 and the water collecting tank 12, and it is not shown in the drawing, The water collecting tank (12) can constitute additional components such as a replenishing water supply unit, a drainage unit, and a filtration unit.

5, the open-type countercurrent heat exchanger 20b is subjected to wet cooling and dry operation (see FIG. 5) in the heat exchange area 5a and the water spraying area 6a, a mixed cooling operation of wet cooling and dry cooling is performed on the closed type countercurrent heat exchanging unit 20b as shown in FIGS. 7 and 13, A plurality of divided heat exchange areas 5b and a sprayed area 6b are formed so as to divide the heat exchange area 5a and the sprayed area 6a into a plurality of divided heat exchange areas 5b and a sprayed area 6b, 20b and the upper surface of the elevator 28. The longitudinal partition wall 55a and the transverse partition wall 55b may be vertically partitioned from each other.

Here, divided counterflow heat exchanging units 20a and 20b are disposed in each of the plurality of divided heat exchange areas 5b, and divided water spraying units 30 may be disposed in each of the plurality of divided water spraying areas 6b. have.

It is preferable that the plurality of divided heat exchange areas 5b and the sprayed area 6b are partitioned only by the longitudinal partition wall 55a so as to be formed in a row. However, when it is necessary to further expand according to the size of the cooling tower, The longitudinal partitioning wall 55a and the transverse partitioning wall 55b may be horizontally and vertically partitioned to enlarge the number of the plurality of partitioning areas 5b, 6b and 7b.

It is preferable that the plurality of divided heat exchange areas 5b and the sprayed area 6b are provided corresponding to each of the blowing fans. However, as shown in FIGS. 6 and 14, two blowing fan groups, The divided heat exchanging area 5b and the water spraying area 6b may be partitioned into three blowing fan groups or more than one blowing fan group.

Next, the countercurrent heat exchanger includes an open type countercurrent heat exchanger 20a formed of any one of a film-type filler made of a plurality of film sheets or a filler material having a plurality of splash bars,

A fluid inlet header 22 in which a fluid inlet 21 is provided in one region and one end of the heat transfer tube 23 is connected and a fluid outlet 24 is provided in one region And a fluid outflow header (25) to which the other end of the heat transfer pipe (23) is connected, or a closed type countercurrent heat exchange unit (20b)

And a mixed-type countercurrent heat exchanger 20c in which the open-type countercurrent heat exchanger 20a and the closed countercurrent heat exchanger 20b are combined.

As shown in FIGS. 7 and 13, the open-type countercurrent heat exchanging unit 20a is connected to the bottom of the closed-type countercurrent heat exchanging unit 20b or the top of the closed countercurrent heat exchanging unit 20b, The open type countercurrent heat exchanging part 20a may be disposed between the stacked layers in the case of the closed type countercurrent heat exchanging part 20b which is stacked and arranged in plural.

Here, the open type countercurrent heat exchanging part 20a disperses the fluid (cooling water) flowing to the outer surface of the closed type countercurrent heat exchanging part 20b and cools the fluid, Thereby improving the cooling efficiency of the heat exchange portion 20b.

The heat transfer tube 23 of the closed type countercurrent heat exchanger 20b may be formed of any one selected from a circular tube, an elliptical or oval tube, and a flat tube.

The heat transfer pipe 23 may further include a plurality of heat transfer fins 46 to improve the heat transfer efficiency.

The heat transfer pipe 23 may be formed of a single serpentine heat transfer pipe or a straight pipe heat transfer pipe formed of a straight pipe portion and a curved pipe portion.

The heat transfer pipe 23 may be a copper tube, an aluminum alloy tube, a stainless steel tube, or a hot-dip galvanized steel tube.

Next, the fluid inlet 31 of the water spraying unit 30 for spraying the cooling fluid to either the closed type countercurrent heat exchange unit 20b or the mixed type countercurrent heat exchange unit 20c, A fluid supply pipe 16 for supplying a cooling fluid and a water spray pump 15 provided in the fluid supply pipe 16 may be further included.

Here, it is preferable that the fluid supply pipe passage 16 and the water spray pump 15 are individually formed in the water spraying portions 30.

The sprinkling pump 15 may be operated in a wet cooling operation, and may be stopped in a dry cooling operation or a dry operation.

Next, the fan cylinder unit includes an angular fan deck 66a, which is provided at the lower end of the fan cylinder 64 and has a bottom open, four side faces are closed, and a safety grid mounting unit 68, A fan cylinder portion 63a;

A bell mouth shaped intake port 65 provided at the lower end of the fan cylinder 64, a safety grid mounting portion 68 provided at the upper end of the fan grid cylinder 64, A flushing fan cylinder portion 63b composed of a flushing fan cylinder 67a;

An exposed fan cylinder portion 63c which is formed at the lower end of the fan cylinder 64 and forms a flange by an external angle and has a rectangular fan-shaped fan deck 66b and a safety grid mounting portion 68 provided at an upper end thereof;

An exposed fan cylinder portion 63d composed of a cylinder flange 67b provided at the lower end of the fan cylinder 64 and a safety grid mounting portion 68 provided at the upper end,

A damper housing 72c provided at an upper end of the damper housing 72c and a suction grid 65 disposed at a lower end of the fan cylinder 64. A safety grid mounting portion 68 provided at an upper end of the damper housing 72c, And an exposed fan cylinder portion 63e constituted by a cylinder-shaped flange 67c provided at the lower end of the fan cylinder portion 63e.

The blowing fan is preferably composed of the exposure type blowing fans 60a, 60c, 60d, and 60e disposed on the upper side of the upper casing 2b so as to simplify the inspection and maintenance. However, Type blowing fan 60b that is embedded in the inside of the upper casing 2b.

The fan motor includes an AC induction motor 62a for driving any one of a drive belt or a gear reducer for rotating the fan blade 61, a deceleration motor 62a An AC geared induction motor or an external rotor brushless DC motor 62b that drives the fan blade 61 directly.

Here, the diameter of the fan cylinder is 1,200 mm or more. The large-sized blowing fan is preferably a blowing fan constituting the alternating-current induction electric motor 62a or the decelerating motor 62a. In the case of a small-sized blowing fan (a small-sized blowing fan having a fan cylinder diameter of 1,200 mm or less, it is preferable that the blower fan constitutes an outer-wheel-drive brushless DC motor 62b that is easy to operate and stop, controls the operation and stop, has a lower operating vibration and noise, and is smaller in size and weight than the capacity of the same class. However, The application thereof is not necessarily limited.

 Next, the blowing fan detachable portion includes a hinge 82a fixed to the upper casing 2b, a rotation stopping portion 83 formed at one side of the hinge 82a, A plurality of opening and closing members 81 for fixing and separating the other side of the fan deck 66a, a plurality of openable and closable hinge portions 81a, 81b, and 81c, each of which includes a fixed hinge 82b and a hinge bolt 84 for connecting the hinge 82a, 83b, (Hatch type) blower fan attaching / detaching portion 80a having the blower fan 85,

A detachable blowing fan detachable portion 80b having an opening and closing member 85 for fixing and separating either one of the rectangular fan decks 66a and 66b or the cylinder flanges 67a, 67b and 67c,

It is also possible to constitute a blowing fan attaching / detaching section of another structure having a function of fixing and separating any one of the angular fan decks 66a, 66b or the cylinder flanges 67a, 67b, 67c.

Between the upper surface of the upper casing 2b and either one of the rectangular fan decks 66a and 66b or the cylinder flanges 67a and 67b and 67c, It is possible to further comprise a connecting member 10a, 10b which provides a work space for the detachable part, forms a flange on the upper and lower surfaces, and has a "C" improvement in cross section.

The opening and closing member 85 includes a fixing bolt having a screw at one end and a fixing plate at the other end and fixed to the upper casing 2b. The fixing bolt is accommodated in the fixing bolt, and the fan decks 66a and 66b, A clamp for fixing and separating one of the cylinder flanges 67a, 67b and 67c, a nut for fastening the clamp (handle nuts, wing nuts, etc.) ,

 A fixing bolt fixed to the connecting members 10a and 10b by a nut tightening and formed with a screw at both ends thereof and a fixing bolt fastened to the fixing bolt and fixed to the fan decks 66a and 66b or the cylinder flanges 67a and 67b and 67c (E.g., handle nuts, wing nuts, etc.) for fixing and separating one of the nuts,

A swing bolt having a screw at one end and a hinge part at the other end, a relative hinge part coupled to the hinge part by a roll pin and fixed to the upper casing, (Handle nuts, wing nuts, and the like) for fixing and separating any one of the angular fan decks 66a, 66b or the cylinder flanges 67a, 67b, 67c. It is preferable that the hinge opening / closing member is formed of any one of the hinge-

It is also possible to constitute the opening and closing member of another structure on which the function of fixing and separating any one of the rectangular fan decks 66a and 66b or the cylinder flanges 67a, 67b and 67c is assumed.

The hatch type blower fan 60a having the hatch type blower fan attaching / detaching portion 80a is provided with a blowing fan 60a for inspecting (or repairing) the blower fan 60a through the openings 9a and 9b. And a locking member (86) for fixing the blowing fan (60a) and releasing the fixing of the blowing fan (60a) when the blowing fan (60a) is opened when lifting one side.

Here, the intermittent member 86 includes a pedestal type intermittent member having one end connected to the hinge portion fixed to the upper casing 2b and the other end provided with a supporting portion for supporting the blowing fan 60a,

One side support rod is connected to a hinge portion fixed to the upper casing 2b and the other side support rod is connected to a hinge portion fixed to any one of the fan deck 66a and the fan cylinder 64. One side and the other side support rope (60a) is fixed by lifting one side of the blowing fan (60a) and fixed to both side supports when the blowing fan (60a) is closed. When the blowing fan (60a) is closed, both side supports It is preferable to be formed of any one of the folding type interlocking members that are folded,

It is also possible to constitute an intermittent member having another structure in which the function of fixing and releasing the fixing of the blowing fan 60a in the open state is assumed.

Next, the outside air inflow / outflow blocking portion divides the water spraying area 6a and the exhaust area 7a into a plurality of split spraying areas 6b and an exhaust area 7b corresponding to each of the plurality of blowing fans, A plurality of longitudinal partition walls 51a for blocking the bypass of the outside air through the fan cylinder 64 and vertically partitioning the bottom surface of the upper casing 2b and the upper surface of the countercurrent heat exchange unit, An outside air inflow preventing portion 50a constituted by the outside air inflow preventing portion 52a;

A plurality of divided heat exchange areas 5b, a sprinkling area 6b, and an exhaust area 7b are formed in correspondence with each of the plurality of blowing fans so that the heat exchange area 5a, the sprinkling area 6a, A plurality of longitudinal partitioning walls 51b for vertically partitioning between the bottom surface of the upper casing 2b and the bottom surface of the countercurrent heat exchange unit, An outside air inflow preventing portion 50b constituted by an orientation partition wall 52b;

The cooling fan is connected to any one of the rectangular fan decks 66a and 66b or the cylinder flanges 67a and 67b and 67c so as to operate the blower fan in conjunction with the operation of the blower fan A damper housing 72a having a damper flange 74a formed at one end thereof to block the inflow of outside air through the fan cylinder 64 when the operation is stopped (OFF) An outside air inflow preventing portion 50c comprising a plurality of damper blades 71a accommodated in the damper blade 72a and a damper portion 70a composed of a damper driver 75 for opening and closing the damper blade 71a;

And is connected to the cylinder flanges 67a and 67b and is opened when the blowing fan is turned on in conjunction with the ON and OFF of the blowing fan and is closed when the blowing fan is OFF A cylindrical damper housing 72b having damper flanges 74a and 74b formed at the upper and lower ends thereof to block the inflow of outside air through the fan cylinder 64 and a damper housing 72b accommodated in the damper housing 72b, an outer air inflow blocking portion 50d comprising a damper portion 70b composed of a vane type damper blade 71b and a damper actuator 75 for opening and closing the damper blade 71b;

A damper housing 72c formed integrally with or integrally formed with the upper end of the fan cylinder 64, a damper housing 72c accommodated in the damper housing 72c and opened at a blowing pressure when the blowing fan is operated (ON) And a damper portion 70c constituted by a plurality of gravity type damper blades 71c which are closed by gravity when the operation is stopped (OFF) to block the inward flow of outside air, But it is preferable to be made of any one,

The outside air inflow blocking portion 50a is provided with a plurality of blowing fan groups (two or more blowing fans) in correspondence with a plurality of blowing fan groups (two or more blowing fans) The divided heat exchanging region 5b and the spraying region 6b of the fan cylinder 64 can be divided to reduce the inflow of outside air through the fan cylinder 64,

And an outer inflow inflow preventing portion composed of only one of a plurality of longitudinal partitioning walls 51a or a lateral partitioning wall 51b that vertically divides the bottom surface of the upper casing 2b and the bottom surface of the countercurrent heat exchanging portion You may.

The outside air inflow blocking portion 50b is provided with the heat exchanging area 5a, the water spraying area 6a and the exhaust area 7a in such a manner that the plural blowing fan groups The sprinkling area 6b and the exhausting area 7b are divided to reduce the flow of outside air through the fan cylinder 64 in correspondence with the number of divided heat exchange areas 5b,

And an outer inflow inflow preventing portion composed of only one of a plurality of longitudinal partitioning walls 51b or a lateral partitioning wall 52b that vertically divides the bottom surface of the upper casing 2b and the bottom surface of the countercurrent heat exchanging portion You may.

It is also possible to constitute an outside air inflow preventing portion of another structure which is assumed to have a function of shutting off or reducing outside air flowing in to other blowing fans that are in operation (ON) through the fan cylinder 64 of the blowing fan in the operation stop state .

The outside air inflow blocking portion 50c and the outside air inflow blocking portion 50d may be disposed at either the upper portion or the lower portion of the fan cylinder 64. [

The vane type damper blade 71b is closed when the rotation angle of the damper blade surface is horizontal, and is open when it is vertically positioned.

Next, the operation stop (OFF) of the blowing fan is controlled by an operation stop (OFF) in accordance with the number-of-operation control of operation (ON) / operation stop (OFF) Over-load trip, short-circuit, etc.).

The number of operation control of the ON / OFF operation of the plurality of blowing fans is controlled by increasing the number of operation stoppages (OFF) of the plurality of blowing fans in operation in accordance with the control signal of the load decrease variation, (ON) of a plurality of blowing fans that are in an operation stop state (OFF) in accordance with a control signal of an increase fluctuation.

Next, the plurality of longitudinal partition walls 51a, 51b or the transverse partition walls 52a, 52b partition the plurality of divided heat exchange areas 5b, the sprayed area 6b and the exhausted area 7b In addition, it has a function as a structure for supporting the four side casings 2a transversely and vertically supporting the upper casing 2b.

Thereby reducing the number of separate support structures supporting the inside of the cooling chamber.

Next, an open type countercurrent heat exchanging portion 20a disposed in close contact with the lower portion of the outside air inflow preventing portion 50a includes a plurality of blowing fans 6a, 6b, To the water spraying area (6b) facing the operating blowing fan through the open type countercurrent heat exchanging part (20a) so as to prevent the outside air from being bypassed,

The surface of the open type countercurrent heat exchange unit 20a formed of a plurality of filler sheets can be disposed in parallel with the plurality of longitudinal partition walls 51a.

For reference, when the surface of the countercurrent heat exchanging portion 20a and the surface of the longitudinal partitioning wall 51a are disposed in an intersecting manner, the outside air may be bypassed through the upper region of the countercurrent heat exchanging portion 20a.

Next, counterflow heat exchangers 20a and 20b 20c may be formed in each of the plurality of divided heat exchange areas 5b.

The sprinkling portion 30 can be formed in each of the divided sprinkling regions 6b in each of the plurality of divided sprinkling regions 6b. And an open / close control valve 121 for controlling the supply of the fluid to switch between the cooling operation and the dry operation.

Next, either the exhaust area 7a formed between the lower side of the openings 9a and 9b and the upper side of the elevator 28, or the upper side of the openings 9a and 9b, And cooling the hot fluid flowing through the blowing fan to reduce heat and humidity to reduce the white smoke and cool the hot fluid flowing by the dry cooling,

A heat exchanger chamber 47 in which the four side surfaces are closed by the side wall and the upper side (one side) and the lower side (the other side) are opened, a heat transfer pipe 43 accommodated in the heat exchange chamber 47 and in which the high temperature fluid flows inward, A plurality of heat transfer fins 46 formed on the outer surface of the heat transfer pipe 43 and a fluid inlet 41 to which the high temperature fluid inlet pipe 112 is connected and the fluid inlet header to which one end of the heat transfer pipe 43 is connected A plurality of dry heat exchanging units 40a and 40a having a fluid outlet 44 to which the cooling high temperature fluid outlet pipe 115 is connected and a fluid outlet header 45 to which the other end of the heat transfer pipe 43 is connected, '40b, 40b').

The plurality of dry heat exchanging units 40a and 40b are a dry heat exchanging unit 40a disposed at one side and a dry heat exchanging unit 40b disposed at the other side,

The plurality of dry heat exchanging units 40a ', 40b' having different signs have the same structure or structure as the plurality of dry heat exchanging units 40a, 40b, and include a dry heat exchanging unit 40a 'disposed on the upper side, And the dry heat exchanging unit 40b 'to which the heat exchanging unit 40b' is disposed.

The heat transfer pipe 43 may be a heat transfer pipe, such as a circular tube, an elliptical or oval tube, or a flat tube.

The heat transfer pipe 43, which is formed by successively forming the straight pipe portion and the bending pipe portion, is preferably a single serpentine or double serpentine structure and may be formed in a range of 2 to 8 rows. .

The heat transfer pipe 43 may be formed of a copper tube, an aluminum alloy tube, a stainless steel tube, or a hot-dip galvanized steel tube.

It is preferable that the heat conductive fins 46 be applied to the conventional plate heat conductive fins mounted on the heat transfer tubes 43 applied to an air conditioner or a condenser by internal coating so as to prevent corrosion in a high- However, it can also be constituted by heat-conducting fins of other shapes and structures such as an aero fin made of a corrosion-resistant material which is formed in close contact with the outer surface of the heat transfer pipe.

Next, in the exhaust region 7a in which the dry heat exchanging units 40a, 40a ', 40b and 40b' are disposed, the exhaust gas is circulated to bypass the exhaust gas at the time of stopping the white smoke reduction operation to reduce the flow resistance of the exhaust gas, As means for reducing,

(Or height) between any one of the dry heat exchanging sections 40a and the other dry heat exchanging section 40b or between the upper dry heat exchanging section 40a 'and the lower dry heat exchanging section 40b' It is possible to further include the flow passage 8 rule.

The exhaust bypass flow passage 8 is closed when the white smoke reduction operation is stopped and opened when the white smoke reduction operation is stopped. The damper housing 71 And a damper driver 75 for opening and closing the damper blade 71a, as shown in FIG.

Here, the bypass exhaust damper portion 70a is provided in the exhaust bypass flow passage 8 and is closed when the white smoke reduction operation is performed, and is opened when the white smoke reduction operation is stopped Can also be configured.

The bypass ventilation damper portion 70a is provided for performing the wet cooling operation of the open type countercurrent heat exchanging portion 20a and the wet cooling operation of the closed type countercurrent heat exchanging portion 20b at the ambient temperature outside the room temperature, Or bypasses the air passing through the dry heat exchanging portions 40a, 40a ', 40b, 40b' through the exhaust regions 7a, 7b to flow outwardly, And discharge it.

During the wet cooling operation and the dry operation of the open type countercurrent heat exchange unit 20a and the wet cooling operation of the closed type countercurrent heat exchange unit 20b at the low temperature outside air temperature where the white smoke occurs, And the exhaust gas passes through the dry heat exchange units 40a, 40a ', 40b and 40b' to perform heat exchange, and the exhaust gas having a lower humidity is discharged to the outside through the exhaust regions 7a and 7b.

Here, the exhaust passing through the dry heat exchanging units 40a, 40a ', 40b and 40b' after completion of heat exchange from the countercurrent heat exchanging unit can be subjected to flow resistance to become resistance exhaust air, The bypass flow exhaust flowing into the open exhaust bypass flow passage 8, which is not generated, can be nonresistance exhaust air.

Although not shown in the drawing, in order to further enhance the white smoke reduction efficiency, the air is passed through the side casing 2b facing the exhaust region 7a above the dry heat exchanging portions 40a, 40a ', 40b, 40b' When the heat exchanging unit is provided, an air blender for improving mixing and flow distribution of the heated outside air through the low-temperature and high-humidity exhaust through the dry heat exchanging units 40a, 40a ', 40b and 40b' .

Next, the high temperature fluid inflow conduit 111 is provided to shut off the supply of the high temperature fluid supplied to either the water spraying portion 30 or the closed type countercurrent heat exchanging portion 20b during the white smoke reducing operation, An on / off control valve (121) for opening (ON) the high temperature fluid to be supplied when the white smoke reduction operation is stopped;

The cooling high-temperature fluid that is cooled through the dry heat exchanging units 40a, 40a ', 40b and 40b' is supplied to the cooling water high-temperature fluid outflow conduit 115 during the white smoke reducing operation, An on / off control valve 122 that is opened to be supplied to any one of the heat exchange units 20b and to shut off the supply of the cooling high temperature fluid when the white smoke reduction operation is stopped;

Wherein the cooling high temperature fluid flowing out of the cooling high temperature fluid outlet conduit (115) is supplied to the water collecting tank (12) or the cooling fluid A fluid bypass flow path 116 for bypass flow to any one of the supply pipe paths 117 and an open / close control valve 123 provided in the fluid bypass flow path 116 for controlling the bypass flow of the cooling fluid .

The open / close control valves 121, 122 and 123 are preferably motorized valves that are opened and closed at a time corresponding to a control signal, but they may also be manually opened and closed manually.

Next, the air conditioner 3 further includes an outside air temperature detector 125a for detecting a temperature of an incoming air supply and outputting a control signal,

One of the water collecting tank (12) or the cooling fluid supply pipe path (117) further comprises a cooling fluid temperature detector (125b) for detecting the temperature of the cooling fluid and outputting a control signal,

A cooling high temperature fluid temperature detector 125c for detecting the temperature of the cooling high temperature fluid flowing out from the dry heat exchanging sections 40a, 40a ', 40b and 40b' and outputting it as a control signal is further provided in the cooling high temperature fluid outflow conduit 115 .

Here, the temperature detectors 125a, 125b, and 125c may be provided in a plurality of measurement units in order to stabilize the control and optimize the detection.

The humidity detector may further include a humidity detector 130 for detecting the humidity of the supply air and outputting it as a control signal to any one of the measurement units adjacent to the air supply unit 3 or the air supply unit 3.

Next, though not specifically shown, a blowing fan control unit for controlling the number of times of deceleration or operation (ON) / operation stop (OFF) of the plurality of blowing fans in accordance with the temperature detection control signal of the cooling fluid and the supply air;

A water reducing sub-filter unit for switching to a wet cooling operation or a dry cooling operation (or a dry operation) in accordance with the temperature detection control signal of the cooling fluid and the supply air;

A white smoke reduction control unit for controlling the white smoke reduction operation according to the temperature and humidity detection control signals of the temperature detector 125a and the humidity detector 130;

And a control unit 150 having a cooling high temperature fluid bypass control unit for controlling the bypass flow of the cooling high temperature fluid according to the temperature detection control signal of the cooling high temperature fluid.

Although not shown in the drawing, the determination unit 150 is provided with a control value setting unit for setting a control value, a display unit for indicating a control state, a control signal input unit for inputting detection and contact signals, A control signal output unit, an alarm unit for alarming abnormal operation and failure, a remote control signal input / output unit for remotely controlling through wired and wireless communication networks, an external storage unit for storing control data to the outside, and a power supply unit for supplying control power have.

Next, the side casing 2a facing the exhaust area 7a or the divided exhaust area 7b is provided with a plurality of doors 17 (17a, 17b) for inspecting and repairing, ) May be further included.

As means for safely moving an operator between the plurality of doors 17 or carrying replacement parts and tools,

A slide rail 93 fixed to one of the upper or side edges of the upper casing 2b in the longitudinal direction and constituting a prefabricated stopper at both ends thereof and connected to the slide rail 93 to be horizontally moved A trolley having a moving roller, a separation preventing guide roller and a housing, a railing frame (101) coupled to the trolley and having an upper portion and a safety height, the railing frame (101) A cage 96 having a rectangular barrel shape constituted by a foot plate 102 which is connected to the railing frame 101 by closing the lower end of the cage 96, And a horizontal movement type gondola having a ladder 105a provided on the floor panel 96.

The lower portion of the cage 96 in the direction of the side casing 2a further includes a plurality of casters 94 for supporting the cage 96 and facilitating horizontal movement, The lower side rail 95 may include a guide wall (not shown) for providing a sliding part of the caster 94 and preventing the caster 94 from slipping off.

The gondola is preferably comprised of a motorized gondola 90a having an electric trolley 91a which is moved by a drive motor 92. It is also possible to use a moving means 98 such as a rope mounted along the slide rail 93 And a manual type gondola 90b having a manual type trolley 91b which is manually moved (moved while pulled by an operator).

Here, the electric trolley 91a may include a pendant switch 97 for operating the electric trolley 91a.

And a ladder 105b or a step for providing an operator's path between the upper surface of the upper casing 2b and the ground in order to enter and exit the plurality of doors 17.

According to the present invention, detouring of outside air through a plurality of blowing fans disposed in the upper casing (2b) can be blocked, and cooling efficiency can be prevented from lowering,

It is possible to reduce the exhaust flow slowing region (heat exchange lowering region) of the heat exchanging portion and at the same time to more evenly flow the exhaust gas to improve the blowing efficiency and the heat exchange efficiency,

The cooling can be performed in a more economical and efficient manner according to the cooling load variation,

It is possible to reduce white smoke,

It is possible to efficiently constitute a plurality of blowing fans in a cooling cell structure such as a square, a rectangle and a circle,

It is easier to secure the installation place of the cooling tower,

The height of the cooling tower can be reduced,

The ventilation fan can be easily mounted and dismounted,

The operating noise and vibration of the blowing fan can be reduced,

It is possible to prevent the cooling operation failure (cooling tower operation stop) due to the blowing fan failure,

It is possible to easily repair (repair) a broken blower fan during operation of the cooling tower,

The consumption power of the blowing fan can be reduced and the water consumption can be saved,

The operation and maintenance cost can be saved.

1 is a schematic side view of a countercurrent cooling tower having multiple blowing fans according to a first embodiment of the present invention;
FIG. 2 is a schematic plan view and a magnified view of a main part of the countercurrent cooling tower having the multiple blowing fans of FIG. 1;
Figure 3 is a schematic side view of a countercurrent cooling tower with multiple blow fans according to a second embodiment of the present invention,
Figure 4 is a schematic plan view of a countercurrent cooling tower with multiple blowing fans of Figure 3;
FIG. 5 is a schematic side view of a countercurrent cooling tower having multiple blowing fans according to a third embodiment of the present invention; FIG.
FIG. 6 is a schematic plan view of a countercurrent cooling tower with multiple blowing fans of FIG. 5;
7 is a schematic side view of a countercurrent cooling tower having a multi-blow fan according to a fourth embodiment of the present invention,
8 is a schematic side view of a countercurrent cooling tower having multiple blowing fans according to a fifth embodiment of the present invention,
Figure 9 is a schematic plan view of a countercurrent cooling tower with multiple blowing fans of Figure 8;
10 is a schematic side view of a countercurrent cooling tower having multiple blowing fans according to a sixth embodiment of the present invention,
FIG. 11 is a schematic plan view showing the dry heat exchanger and the bypass exhaust damper of FIG. 10,
Figure 12 is a schematic plan view of a countercurrent cooling tower with multiple blowing fans of Figure 10,
13 is a schematic side view of a countercurrent cooling tower having a multi-blow fan according to a seventh embodiment of the present invention,
Figure 14 is a schematic plan view of a countercurrent cooling tower with multiple blowing fans of Figure 13,
15 is a schematic side view of a countercurrent cooling tower having a conventional blower fan,
16 is a schematic side view of a conventional evaporative condenser having multiple blowing fans,
17 is a schematic side view of an air-cooled condenser having a conventional multi-ventilation fan.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather clear. The same components are denoted by the same reference numerals, and only representative embodiments will be described. In the other embodiments, only the configurations different from those of the first embodiment will be described.

FIG. 1 is a schematic side view of a countercurrent cooling tower having multiple ventilation fans according to a first embodiment of the present invention, and FIG. 2 is a schematic plan view and an enlarged view of a main part of a countercurrent cooling tower having multiple ventilation fans of FIG. 1 . As shown in these drawings, the countercurrent cooling tower 1a having the multi-ventilation fan according to the first embodiment of the present invention,

A side casing 2a for partitioning a cooling space forming an air supply region 4, a heat exchange region 5a, a water spraying region 6a and an exhaust region 7a; An upper casing 2b;

A feed mechanism (3) formed in one area of the side casing (2a) and a louver (11) provided in the feed mechanism;

A water collecting tank 12 disposed at a lower portion of the side casing 2a and having a cooling fluid outlet 13 through which a cooling fluid supply pipe 117 is connected to one region;

A plurality of openings 9a formed in the upper casing 2b in the shape of a square and an opening jaw 2c having a predetermined height circumferentially outward along the inner periphery of the opening 9a;

The water spraying area 6a and the exhausting area 7a are divided into a plurality of split water spraying areas 6b and an exhaust space 7b and the bottom surface of the upper casing 2b and the upper surface of the countercurrent heat exchanging part 20a An outside air inflow preventing portion 50a constituted by a plurality of longitudinal partitioning walls 51a and a lateral partitioning wall 52a for vertically partitioning between the longitudinal partitioning wall 51a and the lateral partitioning wall 52a;

A fluid distribution main body 32 disposed in the divided sprayed area 6b and having a fluid inlet 31 to which a hot fluid inflow conduit 111 is connected, (30) comprising a fluid distribution pipe (32) provided with a fluid passage (34);

An eliminator 28 disposed above the water spraying unit 30;

A fan cylinder 64 disposed in the upper casing 2b adjacent to the opening 9a formed on the upper side of the divided exhaust area 7b and having a rectangular shape provided on the lower end of the fan cylinder 64, A fan cylinder portion 63a having a safety grid mounting portion 68 provided at the upper end of the fan cylinder 64, a fan blade 61 accommodated in the fan cylinder 64, A plurality of blowing fans (60a) having a fan motor (62a) for driving the blades (61);

A safety grid 89 fixed to the safety grid mounting portion 68;

A hinge 82a fixed to the upper casing 2b, a rotation stopper 83 formed at one side of the hinge 82a, A plurality of opening and closing hinge portions 81 constituted by a hinge 82b fixed to one side of the fan deck 66a and a hinge bolt 84 connecting the hinge 82a and 83b, A fixing bolt which is separated from the upper casing 2b and has a screw at one end thereof and a fixing plate at the other end thereof and is fixed to the upper casing 2b; a clamp (not shown) for fixing and separating the angular fan deck 66a, A hatch type blowing fan detachable portion 80a composed of a fixed bolt type opening and closing member 85 composed of a nut for fastening the clamp (handle nuts, wing nuts, etc.) );

When the worker lifts one side of the blowing fan 60a for inspection (or repair) through the opening 9a and opens the blowing fan 60a, the blowing fan 60a is fixed and opened (Not shown) having a hinge portion (not shown) fixed to the upper casing 2b at one end thereof and a support portion (not shown) at the other end thereof for supporting the blowing fan 60a, 86);

An outside air temperature detector 125a provided in the air supply mechanism 3 for detecting a temperature of an incoming air supply and outputting a control signal;

A cooling fluid temperature detector 125b provided in the cooling fluid supply pipe 117 for detecting the temperature of the cooling fluid and outputting a control signal;

A control unit (not shown) having a blowing fan control unit for controlling the number of times of deceleration or operation (ON) / operation stop (OFF) of the plurality of blowing fans 60a in accordance with the temperature detection control signal of the cooling fluid and the air supply And a countercurrent cooling tower (1a) having multiple blowing fans.

When a fault blowing fan 60a whose operation is stopped due to a failure among the plural blowing fans 60a or a blowing fan 60a whose operation is stopped by a cooling load control is generated, (6b) from the water spraying area (6b) in which air blowing is stopped through the water spraying area (20a)

The face of the open type countercurrent heat exchanging portion 20a disposed in close contact with the lower portion of the outside air inflow preventing portion 50a is disposed in parallel with the plurality of longitudinal partition walls 51a.

1, the cooling tower constituting the blowing fan of the conventional single structure with respect to the height of the cooling tower constituting the plural (multi) blowing fans 60a has an additional height ah The height of the cooling tower is increased.

Next, the main operation according to the configuration of the first embodiment of the present invention will be described.

First, when the cooling load section 300 starts to be turned on, a plurality of blowing fans 60a are turned on in conjunction with the ON signal of the high-temperature fluid supply device 200, The hot fluid flowing through the water spraying unit 30 flows through the open type countercurrent heat exchanging unit 20a while being in contact with the supply air to perform cooling heat exchange and the cooled cooling fluid passes through the water collecting tank 12 And the cooling fluid is supplied to the cooling load unit 300 through the cooling fluid supply pipe 117. The high temperature fluid whose temperature has been raised through the cooling heat exchange from the cooling load unit 300 flows through the high temperature fluid supply pipe 111 And is recirculated to the water spraying portion (30).

On the other hand, the hot exhaust having passed through the heat exchanging part 20a and having undergone heat exchange is discharged to the outside through the divided sprayed water area 6b, the exhaust area 7b and the plurality of blowing fans 60a.

The plurality of blowing fans 60a are operated in the decelerating operation or the operation (ON) / operation stop (OFF) in accordance with the control signal obtained by comparing the temperature detection signals of the cooling fluid of the temperature detectors 125a and 125b with the set values, The number of times of operation is controlled.

Further, even when a blowing fan 60a whose operation is stopped due to a failure among the plural blowing fans 60a or a blowing fan 60a whose operation is stopped by the cooling load control is generated, The blowing fans 60a are continuously operated (0N), and the high-temperature fluid flowing through the spraying portion 30 is subjected to cooling heat exchange while flowing through the open counterflow heat exchanging portion 20a.

Even if no air flow resistance is generated in the fan cylinder 64 of the blowing fan 60a in which the operation is stopped, the spraying area 6b and the exhausting area 7b ), The surface of the open type countercurrent heat exchanging portion (20a) disposed in close contact with the lower portion of the outside air inflow preventing portion (50a) is arranged parallel to the plurality of longitudinal partition walls (51a) The outside air is blocked from flowing into the other plurality of blowing fans 60a in operation (0N) from the blowing fan 60a in the OFF state.

The above operation is repeated as long as the cooling tower 1a is operated.

Next, as a method for separating and fixing the hatch type blowing fan detachable portion 80a of the blowing fan 60a for inspection or maintenance,

First, the power switch of the blowing fan 60a is turned off, and the nuts and the clamps of the plurality of open / close members 85, which fix the other side of the fan deck 66a, are separated.

Then, the blowing fan 60a is lifted up to a predetermined opening angle so that the opening 9a is exposed, and the blowing fan 60a is fixed by the intermittent member 86 so that the blowing fan 60a is rotated and kept open.

Then, the eliminator 28 is moved outwardly to secure a working area through the opening 9a.

Next, the working plate is installed on the upper surface of the fluid distribution main body 32 and the fluid distribution pipe 33 as support parts.

And then performs inspection and repair (water spray nozzle, etc.) in the exhaust area 7b.

Then, after the work is finished, the return to the original state can be performed in the reverse order of the order for inspection and maintenance.

FIG. 3 is a schematic side view of a countercurrent cooling tower with multiple blower fans according to a second embodiment of the present invention, and FIG. 4 is a schematic plan view of a countercurrent cooling tower with multiple blower fans of FIG. As shown in these drawings, the countercurrent cooling tower 1b having the multi-ventilation fan according to the second embodiment of the present invention differs from the above embodiment in that the air supply region 4, the heat exchange region 5a, A side casing 2a for partitioning a cooling space for forming the exhaust chamber 6a and the exhaust area 7a and an upper casing 2b for closing the upper end of the side casing 2a;

A plurality of openings (9b) formed in the upper casing (2b) and having a circular shape;

The upper casing 2b is divided into a plurality of divided heat exchanging areas 5b, a water spraying area 6b and an exhausting area 7b, and the heat exchanging area 5b, the water spraying area 6a and the exhausting area 7a, An outside air inflow preventing portion 50b composed of a plurality of longitudinal partitioning walls 52a and a lateral partitioning wall 52b for vertically dividing the bottom of the counterflow heat exchanging portion 20b and the bottom of the counterflow heat exchanging portion 20b;

A heat transfer pipe 23 disposed in each of the divided heat exchange regions 5b and through which a fluid to be cooled flows and a fluid inlet 21 through which a high temperature fluid inlet pipe 111 is connected to one region, A fluid outflow header 25 to which one end of the heat transfer pipe 23 is connected is provided with a fluid inlet header 22 to which one end of the heat transfer pipe 23 is connected and a fluid outlet 24 to which a cooling fluid supply pipe 117 is connected, A plurality of closed type countercurrent heat exchange units (20b) having a plurality of openings;

A fluid distribution main body 32 disposed in each of the divided spray areas 6b and having a fluid inlet 31 to which a fluid supply pipe path 16 is connected, (30) comprising a fluid distribution pipe (32) provided with a fluid passage (34);

A water spray pump 15 provided in the fluid supply pipe passage 16 to supply the fluid to the water spraying unit 30;

An eliminator 28 disposed above the water spraying unit 30;

A bell mouth shaped intake port provided on the lower end of the fan cylinder 64 in a detachable manner in the upper casing 2b adjacent to the opening 9b formed on the upper side of the divided exhaust area 7b, A fan cylinder portion 63b which is composed of a fan motor 65, a safety grid mounting portion 68 provided at an upper end thereof, and a cylinder lantern 67a formed at the outer periphery of the safety grid mounting portion 68, A plurality of blowing fans (60b) having a fan blade (61) accommodated in the fan blade (61) and a fan motor (62b) driving the fan blade (61);

A working space is provided between the upper surface of the upper casing 2b and the cylinder flange 67 so that the blowing fan can be easily mounted and separated and a flange is formed on the upper and lower surfaces, "Improved connecting member 10a;

A fixing bolt and a nut (handle nuts, wing nuts) for mounting and dismounting (or opening) the blowing fan 60b and fastening the connecting member 10a and the cylinder flange 67a, A separate blowing fan attachment / detachment portion 80b composed of a plurality of fixed bolt type opening / closing members 85,

A side casing (2a) facing the divided exhaust area (7b) and a door (17) provided in the plurality of longitudinal partition walls (51b) and the transverse partition wall (52b);

An outside air temperature detector 125a provided in the air supply mechanism 3 for detecting a temperature of an incoming air supply and outputting a control signal;

A cooling fluid temperature detector 125b provided in the cooling fluid supply pipe 117 for detecting the temperature of the cooling fluid and outputting a control signal;

A blowing fan control unit for controlling the number of times of deceleration or operation (ON) / operation stop (OFF) of the plurality of blowing fans 60b in accordance with the temperature detection control signal of the cooling fluid and the air supply,

A water spray sub-control unit for switching to a wet cooling operation and a dry cooling operation in accordance with the temperature detection control signal of the cooling fluid and the air supply;

A control unit having a white smoke reduction control unit for operating the plurality of closed type countercurrent heat exchange units 20b by dry cooling according to the temperature and humidity detection control signals of the temperature detector 125a and the humidity detector 130, And a countercurrent cooling tower (1b) having multiple blowing fans including a cooling fan (150).

Next, the main operation according to the configuration of the second embodiment of the present invention will be described.

First, when the cooling load unit 300 is turned on, a plurality of blowing fans 60b are turned on in conjunction with an ON signal of the high-temperature fluid supply device 200, The high temperature fluid flowing through the plurality of hermetically sealed heat exchange units 20b comes into contact with the supply air and the fluid sprinkled from the water spraying unit 30 while performing the indirect cooling heat exchange, Is supplied to the cooling load unit (300) through a cooling fluid supply pipe (117), and the high temperature fluid whose temperature has been raised through cooling heat exchange from the cooling load unit (300) Circulated countercurrent heat exchange unit 20b.

The fluid to be collected in the water collecting tank 12 is subjected to cooling heat exchange while passing through the plurality of closed type countercurrent heat exchanging units 20b and the fluid is collected in the water spraying unit 30 through the water spray pump 15 and the fluid supply pipe 16, Lt; / RTI >

On the other hand, the hot exhaust which has passed through the heat exchanging part 20b and has undergone the heat exchange is discharged to the outside through the divided heat exchange area 5b, the water spraying area 6b, the exhaust area 7b and the plurality of blowing fans 60b. do.

Even when a blowing fan 60a whose operation is stopped due to a failure among the plural blowing fans 60b or a blowing fan 60a whose operation is stopped by the cooling load control is generated, The fluid flowing through the water spraying section 30 flows into the closed type countercurrent heat exchange section 20b while cooling fluid flows through the cooling water heat exchanging section 20b.

Even if the blowing resistance is not generated in the fan cylinder 64 of the blowing fan 60b whose operation is stopped, the heat exchange area 5b, the spraying area 6b And the exhausting region 7b are blocked by the air blowing fan 60b which is in the operation stop state (OFF) and the other plural blowing fans 60b in operation (ON).

Although not specifically shown in the figure, the cooling fans of the temperature detectors 125a and 125b and the temperature detection signals of the air supply are compared with the set values, and in accordance with the applied control signal, the plurality of blowing fans 60a are decelerated or operated (ON) / operation stop (OFF).

A wet cooling operation in which the sprinkler pump 15 is turned on in response to a control signal obtained by comparing the temperature detection signals of the cooling fluid and the air supply of the temperature detectors 125a and 125b with the set values, And is operated by the switching control of the dry cooling operation in which the operation is stopped (OFF).

Then, by comparing the supply temperature and the humidity detection signal of the temperature detector 125a and the humidity detector 130 with the set value, and by controlling the dry cooling operation in which the sprinkler pump 15 is turned off according to the applied control signal Performs white smoke reduction operation.

The above operation is repeated as long as the cooling tower 1b is operated.

Next, as a method for separating and fixing the blowing fan 60b for checking (or repairing) and troubleshooting,

The power switch of the blowing fan 60b is cut off and the blowing fan detachable portion 80b including the plurality of opening and closing members 85 fastened to the connecting flange 67a and the cylinder flange 67a is separated .

Then the blowing fan 60b is lifted up so that the opening 9b is exposed and moved up to the upper part of the other blowing fan 60b and then checked (or repaired) in the exhausting region 7b through the opening 9b And work or carry out the blowing fan 60b for troubleshooting.

And can be inspected and operated in the exhaust area 7b through the side casing 2a and the doors 17 provided in the longitudinal partition walls 51b and the lateral partition walls 52b.

Then, after the work is finished, the return to the original state can be performed in the reverse order of the order for inspection and maintenance.

FIG. 5 is a schematic side view of a countercurrent cooling tower having multiple ventilation fans according to a third embodiment of the present invention, and FIG. 6 is a schematic plan view of a countercurrent cooling tower having multiple ventilation fans of FIG. As shown in these drawings, the countercurrent cooling tower 1c having the multi-ventilation fan according to the third embodiment of the present invention differs from the above embodiment in that the air supply area 4, the heat exchange area 5a, A side casing 2a for partitioning a cooling space for forming the exhaust chamber 6a and the exhaust area 7a and an upper casing 2b for closing the upper end of the side casing 2a;

A plurality of openings (9a) formed in the upper casing (2b) and having a square shape;

The heat exchange zone 5a and the water spray zone 6a are divided into a plurality of divided heat exchange zones 5b and a sprinkling zone 6b so that the wet cooling operation, the wet cooling operation, A plurality of longitudinal partition walls 55a and a transverse partition wall 55b vertically partitioning between the upper surface of the eliminator 28 and the bottom surface of the countercurrent heat exchange unit 20a;

A plurality of open type countercurrent heat exchange units (20a) disposed in each of the divided heat exchange zones (5b);

A plurality of water spraying parts (30) disposed in each of the divided water spraying areas (6b) and having a fluid inlet (31) to which the hot fluid inflow conduit (111) is connected;

The high-temperature fluid inflow conduit 111 is provided with a high-temperature fluid inflow conduit 111 for shutting off the supply of fluids to each of the plurality of water spraying portions 30 according to a control signal of the load fluctuation to stop the wet cooling operation, An opening / closing control valve (121) for opening / closing;

A connecting member (10b) coupled to the upper casing (2b) adjacent to the plurality of openings (9a) and forming a flange on the upper and lower surfaces;

An exposed fan cylinder portion 63c composed of a fan cylinder 64, a fan deck 66b provided at the lower end of the fan cylinder 64 and a safety grid mounting portion 68 provided at the upper end thereof, , A plurality of blowing fans (60c) having a fan motor (62b) for driving the fan blades (61);

And is provided in each of the plurality of blowing fans 60c and is opened when the blowing fan 60c is turned on in conjunction with the ON and OFF signals of the blowing fan, (OFF) when the operation of the air blowing fan 60c is stopped (OFF), thereby blocking the inflow of the outside air,

A damper housing 72a having a damper flange 74a at one end thereof, a plurality of damper blades 71a accommodated in the damper housing 72a, and a damper driver 75 for opening and closing the damper blade 71a An outside air inflow preventing portion 50c composed of a damper portion 70a;

A plurality of detachable blowing fan detachable parts 80b which are fixed to the upper surface flange of the connecting member 10a by fixing the damper flange 74a and the fan deck 66b so as to be openable and closable;

An outside air temperature detector 125a provided in the air supply mechanism 3 for detecting a temperature of an incoming air supply and outputting a control signal;

A cooling fluid temperature detector (125b) provided in the water collecting tank (12) for discharging the cooling fluid to detect the temperature of the cooling fluid and output a control signal;

A blowing fan control unit for controlling the number of times of deceleration or operation (ON) / operation stop (OFF) of the plural blowing fans 60c in accordance with the temperature detection control signal of the cooling fluid and the supply air,

A countercurrent cooling tower 1c having multiple blowing fans including a control unit 150 having a spraying controller for switching and controlling the wet cooling operation and the dry operation according to the cooling fluid and the temperature detection control signal of the air supply is provided.

Next, the main operation according to the configuration of the third embodiment of the present invention will be described.

First, when the cooling load section is turned on, the plurality of blowing fans 60c and the outside air inflow cut-off section 50c are operated in conjunction with the ON signal of the high temperature fluid supply device, The high-temperature fluid flowing through the furnace 111 is sprayed from the spraying portion 30, passes directly through the open-type countercurrent heat exchanging portion 20a and directly contacts with the supply air to perform direct cooling heat exchange, The high-temperature fluid whose temperature has been raised through the cooling heat exchange from the cooling load portion is recycled to the plurality of water spraying portions 30 through the high-temperature fluid supply pipe path 111 through the supply pipe path 117.

On the other hand, the high-temperature exhaust that has undergone the heat exchange while passing through the heat exchanging part 20a passes through the exhausting area 7b and the plurality of blowing fans 60c through the divided heat exchange area 5b and the water spraying area 6b, .

The plurality of blowing fans 60c are operated in the decelerating operation or the operation (ON) / operation stop (OFF) in accordance with the control signal, which is obtained by comparing the temperature detection signals of the cooling fluid of the temperature detectors 125a and 125b with the set values, The number of times of operation is controlled.

In addition, whichever of the plurality of blowing fans 60c is blown out by the blowing fan 60c whose operation is stopped due to a failure or the blowing fan 60c whose operation is stopped by the cooling load control, 60c are continuously operated for cooling and the fluid that flows through the water spraying portion 30 corresponding to the ON air blowing fans 60c flows through the plurality of open countercurrent heat exchanging portions 20a Cooling heat exchange occurs.

On the other hand, in the sprinkling portion 30 of the split water spraying region 6b corresponding to the operation stop air blowing fan 60c, the opening / closing control valve 121 Is turned OFF to interrupt the fluid supply and the countercurrent heat exchange unit 20a is operated in a dry state.

The outside air inflow preventing portion 50c provided in each of the plurality of blowing fans 60c and opened in conjunction with the ON operation of the blowing fan is operated to stop the operation of the blowing fan 60c (OFF) and interrupts the inflow of outside air through the blowing fan 60c.

Although not shown in the drawings, the cooling fans of the temperature detectors 125a and 125b and the temperature detection signals of the air supply units are compared with the set values, and the plurality of blowing fans 60c are operated in the decelerating operation or the driving (ON) / operation stop (OFF).

The wet cooling operation and the open / close control valve (the ON / OFF control valve) are opened in accordance with the control signal obtained by comparing the temperature detection signals of the cooling fluid of the temperature detectors 125a and 125b with the set values, 121 are closed (OFF).

The above operation is repeated as long as the cooling tower 1c is operated.

Next, as a method for separating and fixing the blowing fan 60c for inspection (or repair) and troubleshooting,

A damper flange 74a and a fan deck 66b are fixed to the upper surface flange of the connecting member 10b by cutting off the power switch of the blowing fan 60c, Thereby separating the plurality of blower fan attaching / detaching portions 80b.

Thereafter, the blowing fan 60c to which the outside air inflow blocking portion 50c is coupled is lifted so as to expose the opening 9a and is moved to the upper portion of the other blowing fan 60c around the outside, It is also possible to perform inspection (or repair) and work in the area 7a, or to take out the blowing fan 60c for troubleshooting.

Although not shown in the drawings, it is also possible to inspect and work in the exhaust area 7a through the door 17 provided in the side casing 2a.

Then, after the work is finished, the return to the original state can be performed in the reverse order of the order for inspection and maintenance.

7 is a schematic side view of a countercurrent cooling tower having multiple blowing fans according to a fourth embodiment of the present invention. As shown in the figure, the countercurrent cooling tower 1d having the multi-ventilation fan according to the fourth embodiment of the present invention differs from the above-described embodiment in the air supply area 4, the heat exchange area 5a, A side casing 2a for partitioning a cooling space forming the exhaust area 7a and an upper casing 2b for closing the upper end of the side casing 2a;

A plurality of openings (9b) formed in the upper casing (2b) and having a circular shape;

The heat exchange zone 5a and the water spray zone 6a are divided into a plurality of divided heat exchange zones 5b and a sprinkling zone 6b so that the wet cooling operation, the wet cooling operation and the dry cooling operation can be performed simultaneously, A plurality of longitudinal partitioning walls 55a and a transverse partitioning wall 55b which vertically partition the upper surface of the eliminator 28 and the bottom surface of the countercurrent heat exchanging portion 20c;

A plurality of mixed countercurrent heat exchange units 20c disposed in each of the divided heat exchange zones 5b and combining the open type countercurrent heat exchange unit 2a and the closed type countercurrent heat exchange unit 2b;

A plurality of water spouts (30) disposed in each of the divided spray areas (6b) and having a fluid inlet (31) to which a fluid supply pipe passage (16) is connected;

A water spray pump 15 provided in the fluid supply pipe passage 16 to supply the fluid to the water spraying unit 30;

A connecting member (10a) coupled to the upper casing (2b) adjacent to the plurality of openings (9a) and forming a flange on an upper surface and a lower surface;

An exposed fan cylinder portion 63d composed of a fan cylinder 64, a cylinder flange 67b provided at the lower end of the fan cylinder 64, and a safety grid mounting portion 68 provided at the upper end thereof, , A plurality of blowing fans (60d) having a fan motor (62b) for driving the fan blades (61);

And is provided in each of the plurality of blowing fans 60d and is opened when the blowing fan 60d is operated (ON) in conjunction with the ON and OFF signals of the blowing fan, (OFF) when the operation of the air blowing fan 60d is stopped (OFF), and as a means for blocking the inflow of outside air,

A damper housing 72b having damper flanges 74a and 74b at both ends thereof, a plurality of vane type damper blades 71b accommodated in the damper housing 72b, An outside air inflow preventing portion 50d comprising a damper portion 70b constituted by a damper actuator 75;

A damper flange 74b of the damper part 70b coupled with the blowing fan 60d is fixedly secured to the upper surface flange of the connecting member 10a and a plurality of separable blowing fan attaching / A portion 80b;

An outside air temperature detector 125a provided in the air supply mechanism 3 for detecting a temperature of an incoming air supply and outputting a control signal;

A cooling fluid temperature detector 125b provided in the cooling fluid supply pipe 117 for detecting the temperature of the cooling fluid and outputting a control signal;

An outside air humidity detector 130 for detecting the humidity of outside air and outputting a control signal;

Although not shown in the drawings, a blowing fan control section for controlling the number of times of deceleration or operation (ON) / operation stop (OFF) of the plural blowing fans 60d in accordance with the temperature detection control signal of the cooling fluid and the air supply,

A water spray sub-control unit for switching to a wet cooling operation and a dry cooling operation in accordance with the temperature detection control signal of the cooling fluid and the air supply;

A control unit 150 having a white smoke reduction control unit for operating the plurality of mixed convection heat exchange units 20 by dry cooling according to the temperature and humidity detection control signals of the temperature detector 125a and the humidity detector 130, And a countercurrent cooling tower 1d having a multi-blow fan including a plurality of blowing fans.

Next, the main operation according to the configuration of the fourth embodiment of the present invention will be described.

First, when the cooling load section starts to be turned on, a plurality of blowing fans 60d and an outside air inflow preventing section 50d are operated (ON) in conjunction with an operation (ON) signal of the high temperature fluid supply device, The high temperature fluid flowing through the plurality of closed countercurrent heat exchange units 20b is in contact with the fluid to be supplied from the supply and the water spraying unit 30 while performing the indirect cooling heat exchange and the cooled cooling fluid is cooled The high temperature fluid supplied from the cooling load section to the cooling load section via the fluid supply pipe path 117 and having a high temperature through the cooling heat exchange is recirculated through the high temperature fluid supply pipe path to the plurality of hermetic countercurrent heat exchange sections 20b do.

The fluid that is cooled and exchanged while passing through the plurality of open type countercurrent heat exchange units 20a and the closed countercurrent heat exchange units 20b and the fluid collected in the water collecting tank 12 passes through the water spray pump 15 and the fluid supply pipe 16 To the water spraying portion 30 through the passage of the water.

Here, the fluid sprayed from the water spraying unit 30 is in contact with the exhaust flowing through the open type countercurrent heat exchanging unit 20a to perform direct heat exchange, while the cooled fluid is in contact with the flowing supply air, And a cooling heat exchange for cooling the high-temperature fluid flowing through the countercurrent heat exchange portion 20b.

On the other hand, the high-temperature exhaust that has undergone the heat exchange while passing through the heat exchanging portion 20c is discharged to the outside through the divided heat exchange area 5b, sprinkling area 6b, exhaust area 7a and plural blowing fans 60d. do.

The plurality of blowing fans 60c are operated in the decelerating operation or the operation (ON) / operation stop (OFF) in accordance with the control signal, which is obtained by comparing the temperature detection signals of the cooling fluid of the temperature detectors 125a and 125b with the set values, The number of times of operation is controlled.

In addition, whichever of the plurality of blowing fans 60d is blown out by the blowing fan 60d whose operation is stopped due to a failure or the blowing fan 60d whose operation is stopped by the cooling load control, 60d are continuously operated for cooling and the fluid flowing through the water spraying portion 30 corresponding to the ON air blowing fan 60d flows through the counterflow heat exchanging portion 20c to perform the cooling heat exchange .

The outside air inflow preventing portion 50d provided in each of the plurality of blowing fans 60c and opened in conjunction with the operation of the blowing fan turns on the operation of the blowing fan 60c (OFF) and interrupts the inflow of outside air through the blowing fan 60c.

A wet cooling operation in which the sprinkler pump 15 is turned on in response to a control signal obtained by comparing the temperature detection signals of the cooling fluid and the air supply of the temperature detectors 125a and 125b with the set values, The switching control operation is performed by the dry cooling operation in which the operation is stopped (OFF).

In addition, by comparing the supply air temperature and humidity detection signals of the temperature detector 125a and the humidity detector 130 with the set values, and by controlling the dry cooling operation in which the spraying pump 15 is turned off according to the applied control signal Performs white smoke reduction operation.

Next, as a method for separating and fixing the blowing fan 60d for checking (or repairing) and troubleshooting,

A plurality of blowing fan attaching / detaching portions 70a, 70b, 70c, 70c, 70m, 70m, 70m, 70m, 70m, 70m, 70m, 70m, (80b).

Thereafter, the blowing fan 60d coupled with the outside air inflow preventing portion 50d is lifted so as to expose the opening 9b and is moved to the upper portion of the other blowing fan 60d around the periphery, and is then discharged through the opening 9b, It is also possible to carry out inspection (or repair) and work in the area 7a, or take out the blowing fan 60d for troubleshooting.

Although not shown in the drawings, it is also possible to inspect and work in the exhaust area 7a through the door 17 provided in the side casing 2a.

Then, after the work is finished, the return to the original state can be performed in the reverse order of the order for inspection and maintenance.

FIG. 8 is a schematic side view of a countercurrent cooling tower having multiple ventilation fans according to a fifth embodiment of the present invention, and FIG. 9 is a schematic plan view of a countercurrent cooling tower having multiple ventilation fans of FIG. As shown in these figures, the countercurrent cooling tower 1e having the multi-blow fan according to the fifth embodiment of the present invention differs from the above-described embodiment in that the air supply region 4, the heat exchange region 5a, A side casing 2a for partitioning a cylindrical cooling space for forming the exhaust chamber 6a and the exhaust area 7a and a disc-shaped upper casing 2b for closing the upper end of the side casing 2a;

A feed mechanism (3) formed in one area of the cylindrical side casing (2a) and a louver (11) provided in the feed mechanism;

A cylindrical water collecting tank (12) disposed at a lower portion of the side casing (2a) and having a cooling fluid outlet (13) through which a cooling fluid supply pipe (117) is connected to one region;

A plurality of openings (9a) formed in the disc-shaped upper casing (2b) and having a circular shape;

An open type countercurrent heat exchange unit 20a disposed in the heat exchange zone 5a;

A water spraying part (30) arranged in the water spraying area (6a);

An eliminator 28 disposed above the water spraying unit 30;

The connecting member 10a and the outside air inflow blocking portion 50d are detachably connected to the upper casing 2b by the detachable blowing fan detachable portion 80b formed by the opening and closing member 85 adjacent to the opening 9a, And a blowing fan 60d;

An outside air temperature detector 125a provided in the air supply mechanism 3 for detecting a temperature of an incoming air supply and outputting a control signal;

A cooling fluid temperature detector 125b provided in the cooling fluid supply pipe 117 for detecting the temperature of the cooling fluid and outputting a control signal;

A control unit (not shown) having a blowing fan control unit for controlling the number of times of deceleration or operation (ON) / operation stop (OFF) of the plurality of blowing fans 60a in accordance with the temperature detection control signal of the cooling fluid and the air supply And a countercurrent cooling tower (1e) having multiple blowing fans including a cooling fan (150).

Next, a fifth embodiment of the present invention is characterized in that a cooling space composed of a cylindrical side casing 2a and a disk-shaped upper casing 2b and a plurality of blowing fans 60d The method of separating and fixing the blowing fan 60d for the main operation, inspection or maintenance according to the fifth embodiment of the present invention is the same as the above-described embodiment. .

FIG. 10 is a schematic side view of a countercurrent cooling tower having multiple blow fans according to a sixth embodiment of the present invention, FIG. 11 is a schematic plan view showing a dry heat exchanger and a bypass exhaust damper of FIG. 10, 10 is a schematic plan view of a countercurrent cooling tower having multiple blowing fans. As shown in these drawings, the countercurrent cooling tower 1f having a multi-ventilation fan according to the sixth embodiment of the present invention differs from the above-described embodiment in that the air supply region 4, the heat exchange region 5a, A side casing 2a for partitioning a cooling space for forming the exhaust chamber 6a and the exhaust area 7a and an upper casing 2b for closing the upper end of the side casing 2a;

A plurality of openings (9a) formed in the upper casing (2b) and having a square shape;

A connecting member (10b) coupled to the upper casing (2b) adjacent to the plurality of openings (9a) and forming a flange on the upper and lower surfaces;

An open type countercurrent heat exchange unit 20a disposed in the heat exchange zone 5a;

A water spraying part (30) disposed in the water spraying area (6a) and having a fluid inlet (31) to which the fluid supply pipe path (16) is connected;

And an exhaust bypass flow passage 26a is formed in the exhaust area 7a formed between the lower side of the opening 9a and the upper surface of the eliminator 28 at a predetermined width in the middle between the one side casing 2a and the other side casing 2a. (4) is closed horizontally, so that the exhaust of the saturated moisture vaporizer is heated and the humidity is reduced to reduce the white smoke, and the hot fluid which flows is cooled by the dry cooling, A heat transfer pipe 43 accommodated in the heat exchange chamber 47 and having a high temperature fluid flowing inward; a plurality of heat transfer tubes 43 formed on the outer surface of the heat transfer pipe 43; A fluid inlet header 42 to which one end of the heat transfer pipe 43 is connected and a cooling high temperature fluid outlet pipe 115 to which a high temperature fluid inflow conduit 112 is connected, A fluid outlet 44 connected to the heat transfer pipe 43, A plurality of dry heat exchange units (40a, 40b) having a fluid outflow header (45) to which the other end is connected;

A plurality of damper blades 71c which are disposed in the exhaust bypass flow passage 8 and are closed when the white smoke reduction operation is ON and are opened when the white smoke reduction operation is stopped A bypass damper portion 70c constituted by a damper housing 72c disposed and a damper driver 75 opening and closing the damper blade 71c;

A fan cylinder 64, an intake port 65 provided at the lower end of the fan cylinder 64, a damper housing 72c provided at the upper end, a safety grid mounting portion 68 provided at the upper end of the damper housing 72c, An exposed fan cylinder portion 63e formed at the lower end of the damper housing 72c and formed of a cylinder flange 67c coupled to the upper surface flange of the connecting member 10b, A plurality of blowing fans 60e having a fan blade 61 for driving the fan blades 61 and a fan motor 62b for driving the fan blades 61;

As means for blocking the influx of outside air through the blowing fan (60e) provided in each of the plurality of blowing fans (60e)

The fan is accommodated in a damper housing (72c) integrally formed at the upper end of the fan cylinder (64). When the blowing fan is operated (ON), the fan is opened by a blowing pressure to flow exhaust gas. An outer air inflow preventing portion 50e formed of a damper portion 70c composed of a plurality of gravity type damper blades 71c that block the inflow of outside air by closing the outer air inflow preventing portion 50e;

A plurality of detachable blowing fan detachable parts 80b which are fixed to the upper surface flange of the connecting member 10b so as to fix the cylinder flange 676c and are made of an opening and closing member 85;

And is provided in the high temperature fluid inflow conduit 111 to shut off the supply of the high temperature fluid supplied to the water spraying section 30 during the white smoke reduction operation and to turn on the high temperature fluid to be supplied when the white smoke reduction operation is stopped An opening / closing control valve 121;

The cooling high temperature fluid flowing through the cooling high temperature fluid outflow conduit 115 is opened so that the cooling high temperature fluid cooled through the dry heat exchanging portions 40a and 40b is supplied to the spraying portion 30 during the white smoke reducing operation, An open / close control valve (122) for shutting off the supply of the cooling high temperature fluid when the operation is stopped;

When the cooling high temperature fluid that is connected to the cooling high temperature fluid outflow conduit 115 and flows out from the cooling high temperature fluid outflow conduit 115 is satisfied with the set cooling fluid temperature, A fluid bypass flow path (116) for bypassing the cooling high temperature fluid to either the water collecting tank (12) or the cooling fluid supply pipe path (117) An opening / closing control valve (123) for controlling opening / closing;

An outside air temperature detector 125a provided in the air supply mechanism 3 for detecting a temperature of an incoming air supply and outputting a control signal;

A cooling fluid temperature detector 125b provided in the cooling fluid supply pipe 117 for detecting the temperature of the cooling fluid and outputting a control signal;

A cooling fluid temperature detector (125c) provided in the cooling high temperature fluid outlet conduit (115) for detecting the temperature of the cooling high temperature fluid and outputting a control signal;

An outside air humidity detector 130 for detecting the humidity of outside air and outputting a control signal;

Although not shown in the drawings, a blowing fan control section for controlling the number of times of deceleration or operation (ON) / operation stop (OFF) of the plural blowing fans 60d in accordance with the temperature detection control signal of the cooling fluid and the air supply,

A watertight subcontroller for switching to a wet cooling operation and a dry cooling operation according to the temperature detection control signal of the cooling fluid and the air supply,

A white smoke reduction control unit for operating the plurality of dry heat exchangers (40a, 40b) in accordance with the temperature and humidity detection control signals of the temperature detector (125a) and the humidity detector (130)

A control unit 150 having a high temperature fluid bypass flow control unit for bypassing the cooling high temperature fluid to either the water collecting tank 12 or the cooling fluid supply pipe path 117 when the cooling high temperature fluid is satisfied with the set cooling fluid temperature A countercurrent cooling tower 1f having multiple blowing fans is provided.

Here, the dry heat exchanging units 40a and 40b are provided with an upper dry heat exchanging unit 40a 'and a lower dry heat exchanging unit 40a' in order to form an exhaust bypass flow path 8 at a predetermined height, As a part 40b '.

Next, the main operation according to the configuration of the sixth embodiment of the present invention will be described.

First, when the operation of the cooling load section is started, the wet cooling operation is interlocked with the operation (ON) signal of the high temperature fluid supply device so that the plurality of blowing fans 60e are turned on and at the same time, And the high temperature fluid flowing through the high temperature fluid supply conduit 111 and the fluid inlet conduit 113 flows into the water spraying portion 30 and the open type countercurrent heat exchanging portion 20a, And the cooled cooling fluid is supplied to the cooling load through the cooling fluid supply line 117. The high temperature fluid whose temperature has been raised through the cooling heat exchange from the cooling load is supplied to the high temperature fluid supply line 111 and the fluid And is recycled to the water spraying unit (30) through the inlet pipe (113).

On the other hand, the hot exhaust which has passed through the heat exchanging part 20a and has undergone the heat exchange is discharged to the outside through the exhaust area 7a and the plurality of blowing fans 60e.

When the temperature and humidity detection signals of the temperature detector 125a and the humidity detector 130 are compared with the set values to switch to the white smoke reducing operation according to the applied white smoke reducing operation control signal, the bypass exhaust damper unit 70c is closed And the opening and closing control valve 122 constituting the high temperature fluid supply pipe path 111 for supplying the high temperature fluid to the dry heat exchanging units 40a and 40b is opened and at the same time the opening and closing control valve 121 is opened, The high temperature fluid flowing through the high temperature fluid supply conduit 111 flows from the countercurrent heat exchanging portion 20a to the blowing fan 60e while passing through the dry heat exchanging portions 40a and 40b. Temperature fluid to the heat exchanger 20a (20a) through the cooling high-temperature fluid outlet pipe (115), the fluid inlet pipe (113) and the water spraying part (30a) while reducing the heat exchange and humidity of the saturated moisture- ), And the heat exchanging part (20a) The cooling fluid, which is in direct contact with the supply air flowing through and flows through the cooling load section, is supplied to the cooling load section through the water collection tank (12) and the cooling fluid supply pipe path (117) The fluid is recycled to the dry heat exchanging part (40a, 40b) through the hot fluid supply pipe path (111).

Meanwhile, when the temperature and humidity detection signals of the temperature detector 125a and the humidity detector 130 are compared with the set values and the wet cooling operation control signal is switched to the wet cooling operation, the bypass exhaust damper unit 70c And the opening and closing control valve 122 constituting the high temperature fluid supply pipe path 111 for supplying the high temperature fluid to the dry heat exchanging units 40a and 40b is closed and the opening and closing control valve 121 Is turned on and performs a wet cooling operation in which the high temperature fluid flowing through the high temperature fluid supply pipe 111 passes through the spraying portion 30 and the heat exchanging portion 20a to perform cooling heat exchange.

In accordance with the cooling high temperature fluid bypass rotation control signal which is obtained by comparing the temperature detection signal of the temperature detector 125c with the cooling fluid temperature set value, the opening / closing control valve 123 provided in the fluid bypass flow path 116 The ON / OFF control valve 122 provided in the cooling high temperature fluid outlet line 115 is closed (OFF), and the cooling high temperature fluid is circulated to the water collecting tank 12.

On the other hand, when the temperature detection signal of the temperature detector 125c is compared with the cooling fluid temperature set value and converted into the applied cooling high temperature fluid bypass rotation shutoff control signal, an open / close control valve (not shown) provided in the fluid bypass flow path 116 123 are closed and the opening and closing control valve 122 provided in the cooling high temperature fluid outlet conduit 115 is opened so that the cooling high temperature fluid is supplied to the sprayer 30. [

The plurality of blowing fans 60e are operated in a decelerating operation or an operation (ON) / operation stop (OFF) according to a control signal applied by comparing the temperature detection signals of the cooling fluid of the temperature detectors 125a and 125b with the set values, ).

In addition, whichever of the plural blowing fans 60e, which is stopped by the failure (OFF) or the blowing fan 60e whose operation is stopped by the cooling load control, occurs, The bypass ventilation damper unit 70c is closed and the other normal blowing fans 60e are continuously operated for cooling and the blowing fans 60e are operated The fluid flowing through the water spraying unit 30 flows through the countercurrent heat exchanging unit 20a to perform cooling heat exchange.

The outside air inflow preventing portion 50e provided in each of the plurality of blowing fans 60e is opened simultaneously with the operation of the blowing fan 60e and is stopped when the operation of the blowing fan 60e is stopped And is closed at the same time to block the flow of outside air through the blowing fan 60e.

The above operation is repeated as long as the cooling tower 1f is operated.

Next, as a method for separating and fixing the blowing fan 60d for checking (or repairing) and troubleshooting,

A plurality of blowing fan attaching / detaching portions 70a and 70b, which are composed of an opening / closing member 85 which is fastened to the upper surface flange of the connecting member 10b with the cylinder flange 67c fixed thereto, (80b).

Thereafter, the blowing fan 60e coupled with the outside air inflow preventing portion 50e is lifted up to the upper portion of the other blowing fan 60e so that the opening 9a is exposed, and then the air is blown through the opening 9a, (Or repair) and work in the area 7a, or take out the blowing fan 60e for troubleshooting.

Although not shown in the drawings, it is also possible to inspect and work in the exhaust area 7a through the door 17 provided in the side casing 2a.

Then, after the work is finished, the return to the original state can be performed in the reverse order of the order for inspection and maintenance.

FIG. 13 is a schematic side view of a countercurrent cooling tower having multiple ventilation fans according to a seventh embodiment of the present invention, and FIG. 14 is a schematic plan view of a countercurrent cooling tower having multiple ventilation fans of FIG. As shown in these drawings, the countercurrent cooling tower 1g having the multi-ventilation fan according to the seventh embodiment of the present invention differs from the above-described embodiment in that the air supply region 4, the heat exchange region 5a, A side casing 2a for partitioning a cooling space for forming the exhaust chamber 6a and the exhaust area 7a and an upper casing 2b for closing the upper end of the side casing 2a;

A plurality of openings (9a) formed in the upper casing (2b) and having a square shape;

The heat exchange zone 5a and the water spray zone 6a are divided into a plurality of divided heat exchange zones 5b and a sprinkling zone 6b so that the wet cooling operation, the wet cooling operation and the dry cooling operation can be performed simultaneously, A plurality of longitudinal partitioning walls 55a and a transverse partitioning wall 55b which vertically partition the upper surface of the eliminator 28 and the bottom surface of the countercurrent heat exchanging portion 20c;

A plurality of mixed countercurrent heat exchange units 20c disposed in each of the divided heat exchange zones 5b and combining the closed type countercurrent heat exchange unit 2b and the open type countercurrent heat exchange unit 2a;

A plurality of water spouts (30) disposed in each of the divided spray areas (6b) and having a fluid inlet (31) to which a fluid supply pipe passage (16) is connected;

A water spray pump 15 provided in the fluid supply pipe passage 16 to supply the fluid to the water spraying unit 30;

A connecting member (10b) coupled to the upper casing (2b) adjacent to the plurality of openings (9a) and forming a flange on the upper and lower surfaces;

An exposed fan cylinder portion 63c composed of a fan cylinder 64, a fan deck 66b provided at the lower end of the fan cylinder 64 and a safety grid mounting portion 68 provided at the upper end thereof, , A plurality of blowing fans (60c) having a fan motor (62b) for driving the fan blades (61);

And is provided in each of the plurality of blowing fans 60c and is opened when the blowing fan 60c is turned on in conjunction with the ON and OFF signals of the blowing fan, A damper housing 72a in which a damper flange 74a is formed at one end to block the inflow of outside air when the operation of the blowing fan 60c is stopped and the damper housing 72a An outside air inflow preventing portion 50c comprising a plurality of damper blades 71a accommodated in the damper blade 71a and a damper portion 70a constituted by a damper driver 75 for opening and closing the damper blade 71a;

A plurality of detachable blowing fan detachable parts 80b which are fixed to the upper surface flange of the connecting member 10b so as to fix the damper flange 74a and the fan deck 66b to each other and which are made of an opening and closing member 85;

A plurality of doors (17) provided on the side casing (2a) facing the exhaust area (7a);

As means for safely moving an operator between the plurality of doors 17 or carrying replacement parts and tools,

A slide rail 93 fixed to the upper surface of the upper edge of the upper casing 2b in the longitudinal direction and constituting a prefabricated stopper at both ends of the slide rail 93 and connected to the slide rail 93, A driving motor 92 for driving the moving roller, an electric trolley 91a having a separation prevention guide roller and a housing, a railing frame 91a coupled to the trolley 91a, A cage 96 in the form of a rectangular barrel including a foot plate 102 which closes the lower end of the railing frame 101 and is coupled to the railing frame 101 and a cage 96 A ladder 105a provided on the cage 96 so that the operator can safely enter and exit the cage 96 and a lower portion of the cage 96 in the direction of the side casing 2a, To make moving easier A lower rail (not shown) having a guide wall (not shown) provided on the side casing (2a) facing the casters (94) for providing a sliding portion of the casters (94) An electric horizontal moving gondola (90a) having an electric motor (95);

A ladder (105b) for providing a path of an operator between the upper surface of the upper casing (2b) and the ground to enter and exit the plurality of doors (17);

An outside air temperature detector 125a provided in the air supply mechanism 3 for detecting the temperature of the incoming air supply and outputting a control signal, an outside air humidity detector 130 for detecting humidity and outputting a control signal,

A cooling fluid temperature detector 125b provided in the cooling fluid supply conduit 117 for detecting the temperature of the cooling fluid and outputting a control signal;

A blowing fan control unit for controlling the number of times of deceleration or operation (ON) / operation stop (OFF) of the plural blowing fans 60c in accordance with the temperature detection control signal of the cooling fluid and the supply air,

A water spraying sub-control unit for controlling switching between a wet cooling operation and a dry cooling operation in accordance with the temperature detection control signal of the cooling fluid and the air supply;

And a control unit for controlling the plurality of closed type countercurrent heat exchange units 20c by dry cooling according to temperature and humidity detection control signals of the temperature detector 125a and the humidity detector 130 to prevent white smoke from occurring, And a countercurrent cooling tower (1g) having multiple blowing fans including a cooling fan (150).

As shown in FIG. 14, the gondola includes a manual trolley (not shown) which is manually moved by using a moving means 98 such as a rope mounted along the slide rail 93 And a manual type gondola 90b having an inclined surface 91b.

Next, the main operation according to the configuration of the seventh embodiment of the present invention will be described.

First, when the cooling load section is turned on, the plurality of blowing fans 60c and the outside air inflow cut-off section 50c are operated in conjunction with the ON signal of the high temperature fluid supply device, The high temperature fluid flowing through the plurality of closed countercurrent heat exchanging parts 20b is in contact with the fluid to be supplied from the supply and the water spraying part 30 while performing the indirect cooling heat exchange and the cooled cooling fluid is cooled The high temperature fluid supplied from the cooling load section to the cooling load section via the fluid supply pipe path 117 and having a high temperature through the cooling heat exchange is recirculated through the high temperature fluid supply pipe path to the plurality of hermetic countercurrent heat exchange sections 20b do.

The fluid to be collected in the water collecting tank 12 is subjected to cooling heat exchange while passing through the plurality of closed type countercurrent heat exchanging units 20b and the fluid is collected in the water spraying unit 30 through the water spray pump 15 and the fluid supply pipe 16, Lt; / RTI >

Here, the fluid sprayed from the water spraying unit 30 is in contact with the exhaust flowing through the open type countercurrent heat exchanging unit 20a to perform direct heat exchange, while the cooled fluid is in contact with the flowing supply air, And indirect cooling heat exchange for cooling the high temperature fluid flowing through the countercurrent heat exchange portion 20b.

On the other hand, the high-temperature exhaust that has passed through the heat exchange unit 20c and has undergone the heat exchange is discharged to the outside through the divided heat exchange area 5b, sprinkling area 6b, exhaust area 7a and plural blowing fans 60c. do.

The plurality of blowing fans 60c are operated in the decelerating operation or the operation (ON) / operation stop (OFF) in accordance with the control signal, which is obtained by comparing the temperature detection signals of the cooling fluid of the temperature detectors 125a and 125b with the set values, The number of times of operation is controlled.

In addition, whichever of the plurality of blowing fans 60c is blown out by the blowing fan 60c whose operation is stopped due to a failure or the blowing fan 60c whose operation is stopped by the cooling load control, 60c are continuously operated for cooling and the fluid flowing through the water spraying portion 30 corresponding to the ON air blowing fans 60c flows through the counterflow heat exchanging portion 20c to perform cooling heat exchange .

The outside air inflow preventing portion 50c provided in each of the plurality of blowing fans 60c and opened in conjunction with the ON operation of the blowing fan is operated to stop the operation of the blowing fan 60c (OFF) and interrupts the inflow of outside air through the blowing fan 60c.

A wet cooling operation in which the sprinkler pump 15 is turned on in response to a control signal obtained by comparing the temperature detection signals of the cooling fluid and the air supply of the temperature detectors 125a and 125b with the set values, The switching control operation is performed by the dry cooling operation in which the operation is stopped (OFF).

Then, in accordance with a control signal obtained by comparing the supply temperature and humidity detection signals of the temperature detector 125a and the humidity detector 130 with the set value, the sprinkling pump 15 is stopped (OFF) Thereby performing reduction operation.

Next, as a method for separating and fixing the blowing fan 60c for inspection (or repair) and troubleshooting,

A damper flange 74a and a fan deck 66b are fixed to the upper surface flange of the connecting member 10b by cutting off the power switch of the blowing fan 60c, Thereby separating the plurality of blower fan attaching / detaching portions 80b.

Thereafter, the blowing fan 60c to which the outside air inflow blocking portion 50c is coupled is lifted so as to expose the opening 9a and is moved to the upper portion of the other blowing fan 60c around the outside, It is also possible to perform inspection (or repair) and work in the area 7a, or to take out the blowing fan 60c for troubleshooting.

Then, after the work is finished, the return to the original state can be performed in the reverse order of the order for inspection and maintenance.

Next, when inspecting and working in the exhaust area 7a through the door 17 provided in the side casing 2a, the operator moves on the gondola 90a or 90b and horizontally moves the door 17 To the exhaust area 7a.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the preferred embodiments.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims, And should be determined by equivalents to the scope of the claims.

In the countercurrent cooling tower with multiple blowing fans according to the present invention,

It is possible to prevent the circumferential inflow of outside air through the plurality of blowing fans disposed in the upper casing 2b and to prevent the cooling efficiency from deteriorating,

It is possible to reduce the exhaust flow slowing region (heat exchange lowering region) of the heat exchanging portion and at the same time to more evenly flow the exhaust gas to improve the blowing efficiency and the heat exchange efficiency,

The cooling can be performed in a more economical and efficient manner according to the cooling load variation,

It is possible to reduce white smoke,

It is possible to efficiently constitute a plurality of blowing fans in a cooling cell structure such as a square, a rectangle and a circle,

It is easier to secure the installation place of the cooling tower,

The height of the cooling tower can be reduced,

The ventilation fan can be easily mounted and dismounted,

The operating noise and vibration of the blowing fan can be reduced,

It is possible to prevent the cooling operation failure (cooling tower operation stop) due to the blowing fan failure,

It is possible to easily repair (repair) a broken blower fan during operation of the cooling tower,

The consumption power of the blowing fan can be reduced and the water consumption can be saved,

It is possible to save operation and maintenance cost, so it is highly likely to be used industrially.

1a, 1b, 1c, 1d, 1e, 1f, 1g: cooling tower
2a: Side casing
2b: upper casing 2c: opening jaw
3: feed mechanism 4: feed zone
5a, 5b: heat exchange area 6a, 6b: water spray area
7a, 7b: exhaust area 8: exhaust bypass flow passage
9a, 9b: openings 10a, 10b:
11, 11 ': louver 12:
13: cooling fluid outlets 14, 21, 31, 41: fluid inlet
15: Sprinkler pump 16: Fluid supply line
17: Entrance 20a, 20b, 20c: Heat exchanger
22, 42: fluid inlet header 23, 43: heat transfer pipe
24, 44: Fluid outlet 25, 45: Fluid outlet header
28: Eliminator 30: Water spray part
32: fluid distribution main body 33: fluid distribution pipe
34: spray nozzle 40a, 40a ', 40b, 40b': dry heat exchanger
46: heat transfer pin 47: heat exchange chamber
50a, 50b, 50c, 50d, 50e:
51a, 51b, 52a, 52b, 55a, 55b:
60a, 60b, 60c, 60d, 60e: blowing fan
61: fan blades 62a, 62b: fan motor
63a, 63b, 63c, 63d, and 63e:
64: fan cylinder 65: intake port
66a, 66b: Fan deck 67a, 67b, 67c:
68: safety grid mounting portions 70a, 70b, 70c, 70d:
71a, 71b, 71c: damper blades 72a, 72b: damper housing
74a, 74b: damper flange 75: damper actuator
80a, 80b: blowing fan attaching / detaching portion 81: opening / closing hinge portion
82a, 82b: Hinge 83:
84: hinge bolt 85: opening / closing member
86: Intermittent member 89: Safety grid
90a, 90b: Gondola 91a, 91b: Trolley
92: drive motor 93: slide rail
94: Casters 95: Lower rail
96: Cage 97: Pendant switch
98: Moving means 101: Railing frame
102: footstool 105a, 105b: ladder
111: high-temperature fluid inflow conduit 113: fluid inflow conduit
115: cooling high-temperature fluid outflow conduit 116: fluid bypass conduit
117: cooling fluid supply line 121, 122, 123: fluid opening / closing control valve
125a, 125b, 125c: Temperature detector 130: Humidity detector
150: control unit 200: high temperature fluid supply device
300: cooling load section

Claims (15)

A side casing 2a defining a cooling space formed of either a rectangular space or a cylindrical space and forming an air supply region 4, a heat exchange region 5a, a water spraying region 6a and an exhaust region 7a; An upper casing 2b closing the upper end of the side casing 2a;
A feed mechanism (3) formed in one area of the side casing (2a);
A plurality of openings (9a, 9b) formed in the upper casing (2b) and having either a square shape or a circular shape;
A water collecting tank (12) disposed below the side casing (2a) and having a cooling fluid outlet (13) in one region;
A countercurrent heat exchanger arranged in the heat exchange zone (5a) for cooling the high temperature fluid flowing from the cooling load unit (300) through the high temperature fluid supply duct (111);
A fluid distribution tube 32 disposed in the spraying area 6a and having a fluid distribution vessel 32 having a fluid inlet 31, a fluid distribution tube 32 branched from the fluid distribution vessel 32 and having a plurality of spray nozzles 34, A water spraying portion 30 which is composed of a spray nozzle 30;
An eliminator 28 disposed above the water spraying unit 30;
The fan cylinder 64 is provided in a detachable structure in the upper casing 2b adjacent to the openings 9a and 9b and has either a fan deck or a cylinder flange provided at one end of the fan cylinder 64 A plurality of blowing fans having a fan motor for driving the fan blades 61;
A blowing fan attaching / detaching unit for attaching and detaching (or opening) the blowing fan;
And an outside air inflow blocking portion for blocking bypassing of outside air through the fan cylinder 64 of the blowing fan whose operation is stopped due to failure or load control among the plurality of blowing fans, A countercurrent cooling tower with multiple blowing fans. The method according to claim 1,
The circular opening 9b is formed so that the diameter of the intake port 65 is controlled so that the intake port 65 formed at the lower end of the fan cylinder 64 when the blowing fan is mounted and removed is easily inserted into the exhaust area 7a (d2) of the cooling fan is larger than that of the cooling fan (d1). The method according to claim 1,
The heat exchange area 5a and the water spraying area 6a are provided with a plurality of divided heat exchange areas 5b and a water spraying area 5b as a means for reducing the water and power by performing the mixed cooling operation of wet and dry depending on the cooling load variation, Further comprising a plurality of partition walls (55a, 55b) vertically partitioning between a bottom surface of the countercurrent heat exchange unit and an upper surface of the eliminator (28)
Wherein each of the plurality of divided heat exchange areas (5b) is provided with a divided counterflow heat exchange part, and each of the plurality of divided sprayed areas (6b) is provided with divided sprayed parts (30) Countercurrent cooling tower. The method according to claim 1,
The countercurrent heat exchanging unit may include an open type countercurrent heat exchanging unit 20a formed of any one of a film-type filler made of a plurality of film sheets or a filler material having a plurality of splash bars,
A fluid inlet header 22 in which a fluid inlet 21 is provided in one region and one end of the heat transfer tube 23 is connected and a fluid outlet 24 is provided in one region And a fluid outflow header (25) to which the other end of the heat transfer pipe (23) is connected, or a closed type countercurrent heat exchange unit (20b)
And a mixed countercurrent heat exchanging part (20c) in which the open type countercurrent heat exchanging part (20a) and the closed type countercurrent heat exchanging part (20b) are combined. 5. The method of claim 4,
Between the water spraying portion 30 and the cooling fluid outlet 13 for spraying the cooling fluid to either the closed type countercurrent heat exchanging portion 20b or the mixed type countercurrent heat exchanging portion 20c, And a water spray pump (15) provided in the fluid supply pipe passage (16). The method according to claim 1,
The fan cylinder portion includes an angular fan deck 66a provided at the lower end of the fan cylinder 64 and having a bottom opened and four side faces closed and a safety grid mounting portion 68 provided at an upper end thereof. A portion 63a;
A buried fan cylinder part 63b composed of an intake port 65 provided at a lower end of the fan cylinder 64, a safety grid mounting part 68 provided at an upper end thereof, and a cylinder lantern 67a;
An exposed fan cylinder portion 63c formed of a square fan deck 66b provided at the lower end of the fan cylinder 64 to form a flange by an external angle and a safety grid mounting portion 68 provided at an upper end thereof;
An exposed fan cylinder portion 63d composed of a cylinder flange 67b provided at the lower end of the fan cylinder 64 and a safety grid mounting portion 68 provided at the upper end,
A damper housing 72c provided at an upper end of the damper housing 72c and a suction grid 65 disposed at a lower end of the fan cylinder 64. A safety grid mounting portion 68 provided at an upper end of the damper housing 72c, And an exposed fan cylinder part (63e) composed of a cylinder-shaped flange (67c) provided at the lower end of the cooling fan (63). The method according to claim 1,
The fan motor includes an AC induction motor 62a for driving any one of a drive belt or a gear reducer for rotating the fan blade 61, motor or an external rotor brushless DC motor (62b) that directly drives the fan blade (61). The multi-air cooling tower according to claim 1, The method according to claim 1,
The blowing fan detachable portion includes a hinge 82a fixed to the upper casing 2b, a rotation stopper 83 formed at one side of the hinge 82a, a hinge 82b fixed to one side of the rectangular fan deck, A plurality of opening and closing hinge parts 81 constituted by a hinge bolt 84 connecting the hinges 82a and 82b and a plurality of opening and closing members 85 for fixing and separating the other side of the fan deck, type blower fan detachable portion 80a;
And a separable blowing fan attachment / detachment portion (80b) having an opening / closing member (85) for fixing and separating any one of the rectangular fan deck or the cylinder flange. The method according to claim 1,
The outside air inflow blocking portion is configured to divide the water spraying area 6a and the exhaust area 7a into a plurality of split spraying areas 6b and an exhaust area 7b corresponding to the plurality of blowing fans, And a plurality of longitudinal partition walls 51a and lateral partition walls 52a vertically partitioning between the bottom surface of the upper casing 2b and the upper surface of the countercurrent heat exchange unit, An outside air inflow blocking portion 50a constituted by the outside air inflow portion 50a;
The heat exchange area 5a, the water spraying area 6a and the exhaust area 7a are partitioned into a plurality of divided heat exchange areas 5b, a sprinkling area 6b and an exhaust area 7b in correspondence with the plurality of blowing fans A plurality of longitudinal partitioning walls 51b for blocking bypass of outside air through the fan cylinder 64 and vertically partitioning the bottom surface of the upper casing 2b and the bottom surface of the countercurrent heat exchange unit, An outside air inflow preventing portion 50b composed of a wall 52a;
The damper flange 74a is connected to any one of the rectangular fan deck or the cylinder flange to interrupt the flow of outside air through the fan cylinder 64 in conjunction with the operation stop of the blowing fan And a damper portion 70a composed of a damper housing 72a formed therein, a plurality of damper blades 71a housed in the damper housing 72a, and a damper driver 75 opening and closing the damper blade 71a. An inflow blocking portion 50c;
A cylindrical damper (74a, 74b) connected to the cylinder flange and interlocking with the operation stop (OFF) of the blowing fan to block bypassing of outside air through the fan cylinder (64) and having damper flanges (74a, 74b) A damper portion 70b composed of a housing 72b, a vane type damper blade 71b accommodated in the damper housing 72b and a damper driver 75 for opening and closing the damper blade 71b An outside air inflow blocking portion 50d;
A damper housing 72c integrally formed at the upper end of the fan cylinder 64 and a plurality of gravity type damper blades 71c accommodated in the damper housing 72c and opened by a blowing pressure and closed by gravity And an outside air inflow preventing portion (50e) formed of a damper portion (70c) constituted by a plurality of air blowing fans. 10. The method of claim 9,
The open type countercurrent heat exchanger disposed in close contact with the lower portion of the outside air inflow blocking portion 50a is configured to perform the open countercurrent heat exchange from the water spraying area 6b facing the blowing fan, (6b) facing the air blowing fan in operation so as to prevent the outside air from being bypassed,
Characterized in that the surface of said open countercurrent heat exchange unit, which is made of a plurality of filler sheets, is arranged in parallel with said plurality of longitudinal partition walls (51a). The method according to claim 1,
In the exhaust region (7a), the exhaust of the saturating moisture evaporator, which is in contact with the fluid sprayed while passing through the countercurrent heat exchanger, is subjected to cooling heat exchange and flows into the blower fan, is heated and reduced in humidity, The hot fluid is cooled by dry cooling,
A heat exchanger chamber 47 in which the four side surfaces are closed by the side wall and the upper side (one side) and the lower side (the other side) are opened, a heat transfer pipe 43 accommodated in the heat exchange chamber 47 and in which the high temperature fluid flows inward, A plurality of heat transfer fins 46 formed on the outer surface of the heat transfer pipe 43 and a fluid inlet 41 to which the high temperature fluid inlet pipe 111 is connected and a fluid inlet header A plurality of dry heat exchanging units 40a and 40a having a fluid outlet 44 to which the cooling high temperature fluid outlet pipe 115 is connected and a fluid outlet header 45 to which the other end of the heat transfer pipe 43 is connected, 40b, 40b '). The multi-air cooling tower according to claim 1, 12. The method of claim 11,
In the exhaust zone 7a in which the dry heat exchanging units 40a, 40a ', 40b and 40b' are disposed, the exhaust flow is bypassed to reduce the flow resistance of the exhaust gas and reduce the power consumption of the blower fan,
(Or height) between any one of the dry heat exchanging sections 40a and the other dry heat exchanging section 40b or between the upper dry heat exchanging section 40a 'and the lower dry heat exchanging section 40b' Further comprising a flow passage (8)
The exhaust bypass flow passage 8 is constituted by a damper housing 72a in which a plurality of damper blades 71a are accommodated and arranged to open and close the bypass flow of the exhaust and a damper driver 75 that opens and closes the damper blade 71a Further comprising: a bypass ventilation damper portion (70d) provided on the side of the cooling fan. 12. The method of claim 11,
And is provided in the high temperature fluid inflow conduit 111 to shut off the supply of the high temperature fluid supplied to either the water spraying portion 30 or the closed counterflow heat exchanging portion 20b during the white smoke reduction operation, An open / close control valve (121) for supplying a high temperature fluid when the operation is stopped;
The cooling high-temperature fluid that is cooled through the dry heat exchanging units 40a, 40a ', 40b and 40b' is supplied to the cooling water high-temperature fluid outflow conduit 115 during the white smoke reducing operation, An on / off control valve 122 that is opened to be supplied to any one of the heat exchange units 20b and to shut off the supply of the cooling high temperature fluid when the white smoke reduction operation is stopped;
A fluid that bypasses the cooling high temperature fluid to either the collection tank 12 or the cooling fluid supply line 117 when the cooling high temperature fluid flowing out of the cooling high temperature fluid outflow conduit 115 meets the set cooling fluid temperature, Further comprising a bypass flow path (116) and an open / close control valve (123) provided in the fluid bypass flow path (116) for controlling the bypass flow opening and closing of the cooling fluid. Cooling tower. The method according to claim 1,
The side casing 2a facing the exhaust area 7a or the divided exhaust area 7b is provided with a plurality of gates 17 for inspecting and repairing by the operator into and out of the exhaust areas 7a and 7b In addition,
As means for an operator to safely move between the plurality of doors (17)
A slide rail 93 fixed to the upper side of the upper casing 2b in the longitudinal direction at one of upper and side edges thereof, a trolley connected to the slide rail 93 to move horizontally, A cage 96 consisting of a railing frame 101 which is opened and protects three sides and a scaffold 102 which closes the lower end of the railing frame 101 and a cage 96 which extends from the upper casing 2b to a cage 96, Further comprising a horizontal moving gondola having a ladder (105a) provided on the cage (96) so that the worker can safely go into and out of the cage (96). 15. The method of claim 14,
The gondola is manually moved using a motorized gondola 90a having an electric trolley 91a moving to a drive motor 92 or a moving means 98 such as a rope mounted along the slide rail 93 And a manual type gondola (90b) having a manual trolley (91b).

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