Fog dissipation cooler

Abstract

The utility model belongs to the technical field of energy conservation and emission reduction, and particularly discloses a fog dispersal cooler which comprises a water collecting tank, a primary air inlet grille, a wet area heat exchange coil pipe, a spraying system, a secondary air inlet window, a condensation water collecting area, a dry area heat exchange coil pipe, a fan system, a dry and wet area communicating pipe, a spraying pipe and a spraying pump. The water collecting tank is fixed to the bottom of the cooler body, the water collecting tank, the wet area heat exchange coil pipe, the spraying system, the condensation water collecting area, the dry area heat exchange coil pipe and the fan system are sequentially arranged from bottom to top, and the condensation water collecting area comprises a hot and wet air condensation module, a dry and wet air mixing area and an efficient water collector. The wet area heat exchange coil pipe and the dry area heat exchange coil pipe are communicated through a dry and wet area communicating pipe, the spraying pump is arranged on the side edge of the water collecting tank, and a water outlet of the spraying pump is connected with the spraying system through a spraying pipe; the dry area heat exchange coil pipe is arranged on the upper portion, the wet area heat exchange coil pipe is arranged on the lower portion, and primary inlet air firstly passes through the wet area heat exchange coil pipe and finally leaves from the dry area heat exchange coil pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of energy saving and emission reduction, in particular to a demisting cooler. Background Art

[0002] As a heat dissipation device for discharging waste heat, coolers are widely used in various fields such as petrochemical, thermal power, metallurgy, medicine, construction, HVAC, air conditioning, etc. They are mainly divided into two types: wet-operating evaporative coolers (or cooling towers) and dry-operating air coolers.

[0003] Cooling towers have high heat exchange efficiency, small footprint and low power consumption, but high water consumption; air coolers have no water loss, but low efficiency, large footprint and high power consumption. Combining the advantages of both, wet-dry dual-purpose coolers came into being. They can operate wet in harsh working conditions or dry at lower temperatures, which not only improves efficiency but also saves water.

[0004] However, the traditional dry-wet dual-purpose cooler still has many shortcomings: if the air entering the fin tube is hot and humid air, scaling and clogging will be serious, energy consumption will be high, and the heat exchange efficiency will decay very quickly; if the air entering the fin tube is fresh air, there is no effective measure to reduce evaporation loss, and the evaporation water consumption under wet conditions is large; the white smoke plume is serious; the function is single, and it is impossible to achieve water-saving and fog-eliminating multi-conditions and multi-functions in one. Utility Model Content

[0005] The purpose of the utility model is to provide a demisting cooler to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a demisting cooler, comprising a water collecting tank, a primary air inlet grille, a wet area heat exchange coil, a spray system, a secondary air inlet window, a condensation water collecting area, a dry area heat exchange coil, a fan system, a dry-wet area connecting pipe, a spray pipe, and a spray pump; the water collecting tank is fixed at the bottom of the cooler body, the water collecting tank, the wet area heat exchange coil, the spray system, the condensation water collecting area, the dry area heat exchange coil, and the fan system are arranged in sequence from bottom to top, the condensation water collecting area includes a hot and humid air condensation module, a dry-wet air mixing area and a high-efficiency water collector, the wet area heat exchange coil and the dry area heat exchange coil are connected by a dry-wet area connecting pipe, the spray pump is arranged on the side of the water collecting tank, the water suction port of the spray pump is connected to the water outlet of the water collecting tank, and the discharge port of the spray pump is connected to the spray system through the spray pipe.

[0007] The dry area heat exchange coil is on the top, and the wet area heat exchange coil is on the bottom. The incoming air first passes through the wet area heat exchange coil and finally leaves the dry area heat exchange coil.

[0008] Preferably, the dry-wet air mixing zone is located below the high-efficiency water collecting zone, the hot and wet air condensation module is arranged below the dry and wet air mixing zone, and the secondary air inlet window is arranged on the side of the hot and wet air condensation module, and its function is to condense and save water. The secondary air inlet window can choose an electric blind to facilitate the adjustment of the air intake volume and change the cooling effect and water-saving effect.

[0009] Preferably, the dry zone heat exchange coils are finned tubes, and the wet zone heat exchange coils are plain tubes.

[0010] Preferably, a liquid outlet of the heat exchange coil in the wet area and a liquid inlet of the heat exchange coil in the dry area are provided on the side of the cooler body.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model passes the hot and humid air from the wet area heat exchange coil through condensation and dehumidification, and then enters the dry area heat exchange coil for heating, the temperature and humidity are reduced, so that the dry area heat exchange coil is not easy to scale and clog; the water collected in the condensation and water collection area falls back into the spray system for reuse, reducing evaporation and floating water loss; after the dehumidification process of the condensation and water collection area and the heating process of the dry area heat exchange coil, the relative humidity and moisture content of the exhaust air are further reduced, reducing the formation of white smoke and plume. Thus, the equipment and system operation efficiency are improved, the cost is saved, the recycling rate of water resources is improved, and unnecessary waste is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the front structure of the utility model.

[0014] In the figure: 1. water collection tank; 2. primary air inlet grille; 3. wet area heat exchange coil; 301. liquid outlet; 4. spray system; 5. secondary air inlet window; 6. hot and humid air condensation module; 7. dry and wet air mixing area; 8. high-efficiency water collector; 9. dry area heat exchange coil; 901. liquid inlet; 10. fan system; 11. dry and wet area connecting pipe; 12. spray pipe; 13. spray pump. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1 The utility model provides a technical solution: a demisting cooler, comprising a water collecting tank 1, a primary air inlet grille 2, a wet area heat exchange coil 3, a spray system 4, a secondary air inlet window 5, a condensation water collecting area, a dry area heat exchange coil 9, a fan system 10, a dry-wet area connecting pipe 11, a spray pipe 12, and a spray pump 13; the water collecting tank 1 is fixed at the bottom of the cooler body, the water collecting tank 1, the wet area heat exchange coil 3, the spray system 4, the condensation water collecting area, the dry area heat exchange coil 9, and the fan system 10 are arranged in sequence from bottom to top, the condensation water collecting area comprises a hot and humid air condensation module 6, a dry-wet air mixing area 7 and a high-efficiency water collector 8, the wet area heat exchange coil 3 and the dry area heat exchange coil 9 are connected through the dry-wet area connecting pipe 11, the spray pump 13 is arranged on the side of the water collecting tank 1, the water suction port of the spray pump 13 is connected to the water outlet of the water collecting tank 1, and the discharge port of the spray pump 13 is connected to the spray system 4 through the spray pipe 12.

[0019] Furthermore, the dry area heat exchange coil 9 is on the top, and the wet area heat exchange coil 3 is on the bottom. The primary incoming air first passes through the wet area heat exchange coil 3 and finally leaves the dry area heat exchange coil 9.

[0020] Furthermore, the dry-wet air mixing zone 7 is located below the high-efficiency water collecting zone, the hot and wet air condensation module 6 is arranged below the dry-wet air mixing zone 7, and the secondary air inlet window 5 is arranged on the side of the hot and wet air condensation module 6, and its function is to condense and save water. The secondary air inlet window 5 can use electric shutters to facilitate the adjustment of the air intake volume and change the cooling effect and water-saving effect.

[0021] Furthermore, the dry zone heat exchange coil 9 adopts finned tubes, and the wet zone heat exchange coil 3 adopts plain tubes.

[0022] Furthermore, a liquid outlet 301 of the wet zone heat exchange coil 3 and a liquid inlet 901 of the dry zone heat exchange coil 9 are provided on the side of the cooler body.

[0023] Working principle:

[0024] The cooler achieves cooling, water saving and mist elimination under different environmental conditions to the maximum extent through the processes of secondary cooling, secondary air intake and secondary water collection.

[0025] Secondary cooling: the dry area heat exchange coil 9 and the wet area heat exchange coil 3 form two sets of cooling modules connected in series to achieve secondary cooling of the cooling medium in the coil;

[0026] Secondary air intake: the fresh air from the primary air intake grille 2 is used to cool the cooling medium in the wet area heat exchange coil 3, while the fresh air from the adjustable secondary air intake window 5 is used to cool the hot and humid air heated by the wet area heat exchange coil 3, thereby achieving cooling and dehumidification of the hot and humid air;

[0027] Secondary water collection - The hot and humid air is cooled and dehumidified for the first time in the hot and humid air condensation module 6, and then the second water collection is completed in the high-efficiency water collector 8. The two water collection processes minimize evaporation and floating water losses, and the collected spray water falls back to the spray system 4 for recycling. The air that has undergone secondary water collection has a lower temperature and humidity, which greatly reduces the corrosion of the dry area heat exchange coil 9, reduces scaling, increases the service life of the fin tube, and also improves the heat exchange efficiency. The air passing through the dry area heat exchange coil 9 is further heated, and the relative humidity is further reduced, which more effectively avoids the formation of white smoke plume.

[0028] Among them, the primary cooling is completed in the wet zone heat exchange coil 3, and its cold source comes from the primary air intake, and the secondary cooling is completed in the dry zone heat exchange coil 9, and its cold source comes from the mixed air of the two air intakes. When the environmental conditions are relatively bad, the wet condition is operated, and the wet zone heat exchange coil 3 is sprayed with water, and the primary cooling is dominant; when the temperature is low in winter, the dry condition is operated, there is no water spraying, and the secondary cooling is dominant. By adjusting the adjustable secondary air intake window 5, the ratio of the primary and secondary air intakes can be adjusted, thereby adjusting the cooling condensation effect.

[0029] Air intake adjustment strategy: Under wet conditions, increase the secondary air intake as much as possible while meeting the cooling requirements to enhance the condensation effect and reduce evaporation losses; under dry conditions, the primary goal is to improve the cooling effect. Since the dry area heat exchange is dominant under dry conditions, and the wind resistance from the primary air intake to the dry area heat exchange coil 9 is greater than that of the secondary air intake, increasing the proportion of secondary air intake is more beneficial to heat exchange.

[0030] When the environmental conditions are bad, the wet working condition is adopted. The primary fresh air enters the cooler through the primary air inlet grille 2, and heat and moisture exchange is carried out at the wet zone heat exchange coil 3, cooling the fluid in the tube, increasing the temperature, and increasing the relative humidity and moisture content; the hot and humid air with high temperature and high humidity enters the hot and humid air condensation module 6, and performs inter-wall sensible heat exchange with the secondary fresh air with low temperature and low humidity from the adjustable secondary air inlet window 5, the temperature is reduced, the relative humidity remains unchanged or increases, the moisture content is reduced, and the condensed water is recovered to the spray system 4; the two air streams are fully mixed in the dry and wet air mixing area 7, the air temperature is further reduced, the relative humidity remains unchanged or increases, and the moisture content remains unchanged; then enter the dry zone heat exchange coil 9 to absorb heat, the air temperature rises again, the relative humidity begins to decrease, and the moisture content remains unchanged; finally, the high-temperature unsaturated humid air is discharged through the fan system 10. Due to the reduction in relative humidity, it is not easy to produce white smoke when exhausting.

[0031] It is worth noting that the entire device is controlled by a main control button. Since the device matched with the control button is a common device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A demisting cooler, characterized in that: The cooler comprises a water collecting tank (1), a primary air inlet grille (2), a wet zone heat exchange coil (3), a spray system (4), a secondary air inlet window (5), a condensation water collection zone, a dry zone heat exchange coil (9), a fan system (10), a dry and wet zone connecting pipe (11), a spray pipe (12), and a spray pump (13); the water collecting tank (1) is fixed at the bottom of the cooler body, and the water collecting tank (1), the wet zone heat exchange coil (3), the spray system (4), the condensation water collection zone, the dry zone heat exchange coil (9), and the fan system (10) are arranged in sequence from bottom to top. The condensation and water collection area comprises a hot and humid air condensation module (6), a dry and wet air mixing area (7) and a high-efficiency water collector (8); the secondary air inlet window (5) is arranged on the side of the hot and humid air condensation module (6); the wet area heat exchange coil (3) and the dry area heat exchange coil (9) are connected via a dry and wet area connecting pipe (11); the spray pump (13) is arranged on the side of the water collection tank (1); the water suction port of the spray pump (13) is connected to the water outlet of the water collection tank (1); and the water discharge port of the spray pump (13) is connected to the spray system (4) via a spray pipe (12).

2. A demisting cooler according to claim 1, characterized in that: The dry-wet air mixing area (7) is located below the high-efficiency water collection area, and the hot and wet air condensation module (6) is arranged below the dry-wet air mixing area (7).

3. The demisting cooler according to claim 1, characterized in that: The dry zone heat exchange coil (9) adopts finned tubes, and the wet zone heat exchange coil (3) adopts plain tubes.

4. The demisting cooler according to claim 1, characterized in that: The side of the cooler body is provided with a liquid outlet (301) of the wet zone heat exchange coil (3) and a liquid inlet (901) of the dry zone heat exchange coil (9).

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