CN1963369A

CN1963369A - Evaporative closed cooling tower

Info

Publication number: CN1963369A
Application number: CN 200510120436
Authority: CN
Inventors: 邱鹏举; 黄志贤
Original assignee: KUANGYU APPLIANCE CORP
Current assignee: KUANGYU APPLIANCE CORP
Priority date: 2005-11-10
Filing date: 2005-11-10
Publication date: 2007-05-16

Abstract

The invention discloses an evaporative closed water tower, comprising: a heat-dissipating coil unit; a water supply device; an air supply device; an inflow end shunt header pipe; and the outflow end converges the main pipe. It is mainly characterized by that the contact surface of metal conduit in the air channel of heat-radiating coil unit is covered with a porous moisture-absorbing material, and the water supply equipment is used to make water be adsorbed on the porous moisture-absorbing material in intermittent water supply mode, and the air can be quickly blown by means of air-supplying device to make normal-temp. evaporation so as to absorb the heat quantity of cooling medium (for example, water) in the metal conduit to obtain the heat-exchange effect. And because the porous moisture absorption material has the moisture absorption and moisture preservation functions, the water supply adopts a periodic mode, a traditional closed cooling water tower secondary side cooling system is not needed, and the functions of energy conservation, small volume and cost reduction are achieved.

Description

Evaporation type sealed cooling cistern

Technical field

The present invention relates to a kind of closed cooling water tower; it utilizes vaporation-type latent heat exchange principle; utilize a spot of water to be two of the energy, but particularly relate to the vaporation-type dry type cooling tower of a kind of conservation of power energy, environmental protection and reduction manufacturing cost for one of energy and a spot of electric power.

Background technology

Closed cooling water tower is uniquely in the cooling tower of all polymorphic types can provide the most a kind of heat exchanger of clean water quality, because being the water with cooling medium, its design is completely enclosed within the middle of two groups of heat exchangers, water is done heat-absorbing action in one group of heat exchanger, make exothermic effects in other one group of heat exchanger, water drives via the continuous circulation of connecting line at pump and reaches heat absorption and release action continuously.Closed cooling water tower is above-mentioned a kind of heat release heat exchanger.But various research reports have obviously shown closed cooling water tower energy savings and reduction running management expense in the utilization in refrigerating and air conditioning field, energy savings is because of permanent maintenance running efficiency of system induced attenuation not, and the running management expense has reduced for example routine management such as maintenance, scale removal, corrosion protection of refrigerant condensed device of heat absorbing side heat exchanger.

Existing closed cooling water tower design as shown in Figure 1, coat the radiator coil tube 13 that undaform or honeycomb type fin 12 and a plurality of metal catheter 131 are formed by a shell 10, action principle must have secondary side cooling system 15, the secondary side cooling water that is extracted in the tank 153 by secondary side pump 151 continuitys on average is sprayed on fin 12 tops via watering device 152, water is in the stroke that freely falling body falls, drive fan 142 rotations by air-supply arrangement 14 by fan motor 141, and generation updraft friction constantly with it in the space that shell coated, the release that produces secondary side cooling water sensible heat amount and latent heat amount.After leaving fin, water reaches the purpose of secondary side cooling water temperature, flow through again radiator coil tube 13 of secondary side cooling water after the cooling absorbs the heat of cooling waters in the metal catheters 131, through thus the section heat exchange after, cooling water produces into the temperature difference that goes out, after also heating up, the secondary side cooling water falls into tank 153, the secondary side cooling water is provided with the supply that a ball-cock assembly 154 is controlled running water because of latent heat changes the water yield of evaporate in then by tank 153 in the stroke that flows, the circulation that so goes round and begins again and reach a heat-exchange power of fixing.

The above only is the ground instance of closed cooling water tower prior art, follow-on example is arranged, roughly do not break away from above-mentioned whole device yet, perhaps improve air flow direction or fin 12 and radiator coil tube 13 separately individual air stream or fin 12 and radiator coil tube 13 staggered stacking generation temperature rank change or the like too numerous to enumerate, but secondary side cooling system 15 but is the main system of common indispensability of its design closed cooling water tower.Because indispensable secondary side cooling system 15 has promptly increased the energy resource consumption of secondary side cooling water pump 151, add need ample supply air communication and cross horsepower number of exerting oneself that the space potential of fin 12 and radiator coil tube 13 must increase fan motor 141, so product that closed cooling water tower is created in existing or improvement at present, though the system of being cooled can be provided, many effects that energy savings is arranged, but for the required power that expends of stationary heat positive energy exchange that itself can produce is bigger quite a lot of than other non-closed cooling water tower, 1 cooling ton=3900kcal/h, between the about 40～50kcal/hW of efficient, be about about 50% of other non-closed cooling water tower.

The problem that another prior art produces is, compare with non-closed cooling water tower, closed cooling water tower is because increased radiator coil tube 13 and secondary side cooling system 15 under the identical cooling ton, the design volume increases a lot of, reach about 2 times of non-closed cooling water tower volume, relative cost improves, weight increases.

Above-described two important disappearances are the greatest factor that make closed cooling water tower can't popularize on market.

Summary of the invention

The object of the present invention is to provide a kind of closed cooling water tower; it utilizes vaporation-type latent heat exchange principle; utilize a spot of water and a spot of electric power to carry out heat exchange, thereby reach the effect of the conservation of power energy, environmental protection and reduction manufacturing cost as two energy.

The object of the present invention is achieved like this, and a kind of closed cooling water tower promptly is provided, and comprising:

One shell has one or more introduction air-flows and the passage of discharging air-flow;

One radiator coil tube unit, have the first-class inlet side joint and that continues and flow out termination continued access head, provide the high temperature fluid that is cooled to enter this radiator coil tube unit, carry out heat exchange action with the be cooled temperature of fluid of reduction, wherein the evaporation conduit formed of metal catheter and porous hygroscopic material is to have air duct between main element and pipe;

One bracing frame provides radiator coil tube fixing and support;

One air-supply arrangement, drive fan by fan motor and make it to produce air stream, this air communication is crossed the air duct in the radiator coil tube unit, takes away the moisture heat of making the inner cooling medium of metal catheter that constant-temperature evaporation absorbs of hygroscopic material fast, reaches a large amount of heat exchange purposes;

First-class inlet side shunting house steward, with the high temperature cooling fluid intending being cooled (for example: water) utilize splicing sleeve to deliver in each radiator coil tube unit respectively and establish at least one pair of outer jointing;

The one outflow end house steward of confluxing utilizes splicing sleeve to be pooled to conflux house steward and establish jointing outside at least one pair of of outflow end from each radiator coil tube unit the cooling fluid after the cooling;

One water work is made up of a controller, a water solenoid valve, one or more watering device and a main feed water pipe, make hydromining with the even sprinkle of discontinuous mode intermittently in the radiator coil tube unit and be adsorbed on this hygroscopic material.

Furtherly, main points of the present invention as shown in Figures 2 and 3, in the fixed space that a shell 20 is coated, place one or more groups radiator coil tube unit 21, wherein radiator coil tube unit 21 has a plurality of evaporation conduits 210, air duct 215 is arranged between pipe, evaporation conduit 210 is by metal catheter 211 surperficial coating hygroscopic materials 212, form as thin thin material matter such as fiber cloth or adhesive-bonded fabric, this each material must have water imbibition, its surface is made up of numerous trickle aperture, after being coated on metal catheter 211 surfaces, when these countless apertures are full of hydrone, the surface of metal catheter 211 is as forming water membrane, utilize the latent heat of water evaporation to change (heat that the water vapor of each g need absorb 539 cards), (for example: heat water) conducts to metal catheter 211 the fluid that is cooled in the metal catheter 211, after absorbing by metal catheter 211 surperficial moisture films again, hydrone after will being vaporized by numerous surperficial aperture discharges, and the air-flow that the fan 232 rotation backs that the vaporize water molecule after the release is driven by the fan motor 231 of air-supply arrangement 23 immediately form is pumped to outside the shell.Cooling water is completely enclosed within the metal catheter 211, so when heat discharged, cooling water can present into going out the temperature difference with the sensible heat quantitative changeization fully.

Another design main points of the present invention are to need not the secondary side cooling system, water supply modes is periodically and discontinuous cyclicity, its water work 24 utilizes water service pressure to enter watering device 242 through a water solenoid valve 241, water solenoid valve is in 241 opening times, running water promptly evenly is sprayed on radiator coil tube 21 upper stratas automatically, metal catheter 211 surperficial hygroscopic material 212 absorption by radiator coil tube 21, after each metal catheter 211 surperficial hygroscopic material 212 adsorption moisture reaches capacity state, unnecessary running water promptly falls down by gravity own, again by the hygroscopic material 212 reception absorption on one deck metal catheter 211 surfaces down, so be repeated to the hygroscopic material 212 on the basecoat metal catheter 211, the feedwater stroke in each cycle is slightly different according to be arranged above and below what of quantity of metal catheter 211, but all be the feedwater program of in several seconds, promptly finishing, after dropping down onto basecoat, water can allow it discharge naturally or reclaim and use if having a surplus, and reclaims and uses the heat exchange procedure that also need not remake cooling.

So, important breakthrough of the present invention is that one does not have general hermetic type and non-closed cooling water tower, one current that necessarily have when running operation are constantly circulation and never manufacturing environmental issue in the fixed space of water tower with resting, as noise, vector mosquito multiply, veteran's disease etc.It two is no traditional closed cooling water tower secondary side cooling system and fin etc., so cost is low, in light weight little with volume, the volume size that is about traditional opening cooling tower can reach the function of closed cooling water tower.

Description of drawings

Fig. 1 is existing closed cooling water tower schematic diagram;

Fig. 2 is an evaporation type sealed cooling cistern schematic diagram of the present invention;

Fig. 3 is an evaporation conduit schematic appearance of the present invention;

Fig. 3 A is coated on metal catheter for the porous hygroscopic material that Fig. 3 evaporates conduit in the stringing mode of wearing

The embodiment schematic diagram;

Fig. 4 is the embodiment internal structure schematic diagram of evaporation type sealed cooling cistern of the present invention;

Fig. 4 A is the vaporation-type radiator coil tube group first embodiment schematic diagram of the present invention;

Fig. 4 B is the vaporation-type radiator coil tube group second embodiment schematic diagram of the present invention;

Fig. 5 is a water work schematic diagram of the present invention;

Schematic diagram when Fig. 6 moves for water solenoid valve ON/OFF of the present invention.

The specific embodiment

Now further understand and approval for making your juror for purpose, the feature of the present invention's creation and the effect of being reached, having, assistant elaborates with the following example and diagram.An explanation is only done in described preferred embodiment, and is non-in order to limit the present invention's creation.Except that describing in detail, but the present invention's creation also extensive use implement, and the scope of this creation do not limited, it is as the criterion with appended claim.

See also Fig. 4 and Fig. 4 A.Closed cooling water tower of the present invention is in the space that is coated by a shell 20 air-supply arrangement 23 to be set, comprise one or more airintake wind-tunnels 235 and exhaust duct 236, device drives the fan motor 231 and the fan 232 of air current flow in the air channel, a plurality of radiator coil tubes unit 21 is set in the space of this air current flow can fixes and tool supports above the bracing frame 22 of its weight one.Each radiator coil tube unit 21 respectively have a plan carry out cooling fluid (for example: water) flow to termination continued access 217 and the outflow end joint 218 that continues, again each is flow to end and outflow end continue joint with metal or nonmetallic splicing sleeve 27 be connected to be provided with in the closed cooling water tower space flow to end shunting house steward 25 and the outflow end house steward 26 of confluxing.When intending being cooled when fluid turns round in system is to enter flowing to of this closed cooling water tower by the condition of high temperature to hold shunting house steward 25, be dispensed to each radiator coil tube unit 21 by each splicing sleeve 27 again, cooling fluid carries out heat exchange action continuously with the metal surface in radiator coil tube unit 21, the sub-cooled fluid that flows out radiator coil tube unit 21 is connected to the outflow end house steward 26 of confluxing with splicing sleeve 27 again, high temperature cooling fluid upstream end is opposite driving in the wrong direction to the direct of travel of sub-cooled fluid outflow end with the flow direction of air-flow in this space.That is the wet-bulb temperature of each layer evaporation conduit in the evaporation coil unit and institute's contact flow air-flow pass is:

The fluid that is cooled flows to evaporation vessel layers contact at first is the air-flow (being about to leave the air in this cooling tower space) of high wet-bulb temperature, what final outflow evaporation vessel layers contacted is the air-flow (just introduced and propped up a fresh air) of minimum wet-bulb temperature, reaches the heat exchange optimum efficiency.

Please consult Fig. 4 B.Be radiator coil tube of the present invention unit 21 another embodiment.

Please consult Fig. 3 A again, it is that metal catheter 211 is made circular casing with porous hygroscopic material 212, utilize the pliability of hygroscopic material itself freely to be set on the metal catheter 212 and form evaporation conduit 210, wherein hygroscopic material can be the material of any tool moisture absorption such as adhesive-bonded fabric, cloth, natural fiber, synthetic fibers or inorfil and heat preservation property.

Please consult Fig. 5.The present invention is one group of water work 24 of device in the space of this closed cooling water tower for another essential implementation, its capital equipment constitutes one or more watering device 242, main feed water pipe 243, water solenoid valve 241 and reaches the feedwater controller 246 that time-delay opens and closes function, the major function of this water work 24 is periodically to provide the even sprinkle of feedwater in 21 tops, radiator coil tube unit, drenches the evaporation conduit of being finished by metal catheter 211 surperficial coating porous hygroscopic materials 212 210 by feed pressure and feedwater free-fall velocity in the several seconds.The feedwater working procedure sees also shown in Figure 6, T1 is that time, the T2 that water solenoid valve 241 is opened is the time that water solenoid valve 241 is closed, T1, T2 can be set at fixed mode according to designed cooling tower heat-exchange power and the wet-bulb temperature condition and cooled object mass-energy quantitative changeization that can introduce according to air-flow under, be set at two kinds of running statuses such as changeable mode.Wherein when the T2 time equaled 0, water solenoid valve 241 was often opened, and reached the function of continuous water feeding.

Claims

1. A closed cooling water tower, comprising:

a housing having one or more passages for introducing airflow and exhausting airflow;

A heat dissipation coil unit has an inlet joint and an outlet joint, which provide cooled high-temperature fluid to enter the heat dissipation coil unit for heat exchange to reduce the temperature of the cooled fluid, in which metal conduits and porous Evaporation ducts composed of non-hygroscopic materials are the main components and there are air passages between the ducts;

A support frame, which provides fixing and support for the cooling coil;

An air supply device, the fan motor drives the fan to generate air flow, and the air flow passes through the air channel in the heat dissipation coil unit, and quickly takes away the heat of the cooling medium inside the metal conduit absorbed by the moisture-absorbing material for evaporation at room temperature, achieving a large amount of heat purpose of exchange;

A distribution main pipe at the inlet end, which sends the high-temperature cooling fluid (for example: water) to be cooled to each cooling coil unit through connecting pipes, and at least one pair of external connection joints is provided;

A confluence main pipe at the outflow end, which collects the cooled cooling fluid from each heat dissipation coil unit to the confluence main pipe at the outflow end by using connecting pipes, and at least one pair of external connection joints is provided;

A water supply equipment, which is composed of a controller, a water solenoid valve, one or more sprinklers and a main water supply pipe, so that the water is evenly sprayed on the cooling coil unit in an intermittent and non-continuous manner and adsorbed on the moisture-absorbing material .

2. The airtight cooling water tower according to claim 1, wherein the evaporative cooling coil unit is coated with a porous moisture-absorbing material on the surface of the metal conduit to form an evaporation conduit, and the coating method is completely covered according to the cross-sectional shape of the metal heat pipe, The evaporating duct is a circuit from the inlet to the outlet, and the first circuit can be straight or bent in segments to form a segmented straight line, and the evaporating duct in a predetermined shape is the main component of the heat dissipation coil unit.

3. The closed cooling water tower according to claim 2, wherein the porous hygroscopic material is coated by directly inserting the metal conduit into a circular sleeve made of the porous hygroscopic material.

4. The airtight cooling water tower according to claim 2, wherein the evaporative cooling coil unit further comprises:

At least one fixing plate is used to fix a plurality of evaporation conduits and keep air passages between the evaporation conduits;

An inlet flow distribution device, connected to each evaporation conduit to send the cooled fluid to each evaporation conduit for heat exchange, and a pair of external connecting nozzles; and

An outlet confluence device, connected to each evaporation conduit to collect the fluid that has completed the heat exchange, and a pair of external connection nozzles are provided

5. The airtight cooling water tower according to claim 1, wherein the diversion main pipe at the inlet end and the confluence main pipe at the outlet end are respectively provided with a plurality of connecting nozzles, and are connected to the pipes according to claim 4 by using metal pipes or non-metallic pipes. The inlet and outlet connection nozzles of the heat dissipation coil unit.

6. The airtight cooling water tower according to claim 1, wherein the water supply system comprises one or more sprinklers, a water supply solenoid valve, a water supply controller and a main water supply pipe, and the water solenoid valve performs according to the instructions of the water supply controller The opening and closing action is used to control the sprinkling time when the external water supply enters the sprinkler device.

7. The airtight cooling water tower according to claim 6, wherein the water feed controller is to execute the output delay opening and delay closing instructions, and the time delay opening and delay closing time is based on entering into the airtight cooling water tower. The temperature difference between the inlet and outlet of the cooling fluid or the temperature difference between the outlet temperature and the set temperature is variable.

8. The airtight cooling water tower according to claim 6, wherein the time of delay opening and delay closing, the output command is also equipped with another fixed mode which can be freely set by humans in response to the needs of test run and maintenance, etc., when the fixed mode is running , the variable mode stops running, and there is a key for switching, and the fixed mode can be continuous water supply or periodic water supply.

9. The airtight cooling water tower according to claim 6, wherein the input feed water controller instruction, due to the intended cooling fluid that should enter the airtight cooling water tower, has a phase change in the cooling process, such as gaseous and liquid water or Other embodiments such as any chemical fluid can also be based on pressure.

10. The airtight cooling water tower according to claim 6, wherein the water supply equipment connects the pipeline from the outlet end of the water solenoid valve to the terminal sprinkling device, the sprinkling device can have a fixed shape and have multiple water outlet channels on the surface, and can also be used in Nozzles are added to the water outlet channel, and the sprinkling mode can be set according to its mechanism as a fixed sprinkling of the sprinkling mechanism or a 360-degree free rotation sprinkling method using the spraying reaction force of the water supply pressure.

11. The closed cooling water tower according to claim 1, wherein the fluid to be cooled can be water or a chemical fluid.