CN212108840U - Evaporative cooling chiller based on solution dehumidification technology - Google Patents

Abstract

The evaporative cooling chiller unit based on the solution dehumidification technology disclosed by the utility model comprises a cold water production unit and a dehumidification solution regeneration unit which are connected to each other; the cold water production unit comprises a unit shell, and a direct evaporative cooling section is arranged in the The internal structure of the unit shell on both sides of the evaporative cooling section is symmetrical and identical, including the air inlet of the unit. The air inlet of the unit is provided with a filter, a surface cooler, an indirect evaporative cooling unit of plate and tube, a dehumidification section, and a direct evaporative cooling unit according to the air flow direction. Evaporative cooling section. The evaporative cooling chiller of the utility model utilizes dry air energy and membrane-based solution dehumidification technology to pre-cool and dehumidify outdoor fresh air. The polymer membrane is separated, the dehumidifying liquid is not in direct contact with the air, and only water molecules are allowed to transmit through osmosis driven by the partial pressure difference of water vapor, which isolates the passage of germs and dehumidifying solution.

Description

Evaporative cooling chiller based on solution dehumidification technology

technical field

The utility model belongs to the technical field of air-conditioning equipment, in particular to an evaporative cooling chiller based on solution dehumidification technology.

Background technique

Evaporative cooling technology has been widely used because of its advantages of environmental protection, water saving and energy saving. It relies on the latent heat of vaporization when the cooling medium evaporates to achieve the purpose of reducing the temperature of the circulating water of the unit itself and provide high-temperature cold water for users or the end of the air conditioner.

For areas with high temperature and high humidity, outdoor air is generally used directly into the evaporative cooling chiller for heat exchange. This device is inefficient and cannot meet the requirements of the outlet water temperature.

Utility model content

The purpose of the utility model is to provide an evaporative cooling chiller based on solution dehumidification technology, which solves the problems of low refrigeration efficiency and high outlet water temperature of the existing evaporative cooling device.

The technical scheme adopted by the utility model is that an evaporative cooling chiller based on solution dehumidification technology includes a cold water production unit and a dehumidification solution regeneration unit connected to each other;

The cold water production unit includes a unit casing, a direct evaporative cooling section is arranged inside the unit casing, and a unit air outlet is arranged at the top of the direct evaporative cooling section. The unit air inlet on the side wall of the unit shell is provided with a filter, a surface cooler, a plate-and-tube indirect evaporative cooling unit, a dehumidification section, and a direct evaporative cooling section in the air inlet of the unit according to the air flow direction.

The utility model is also characterized in that,

The direct evaporative cooling section includes packing, the top of the packing is provided with a water distributor c, a water baffle b, and a fan b from bottom to top, and a water collecting tank c is provided at the bottom of the packing;

The water collecting tank c is sequentially connected to the dehumidifying solution regeneration unit and the water distributor c through the pipeline G1;

A water pump c is installed on the pipeline G1.

The plate-and-tube indirect evaporative cooling unit includes a plate-and-tube indirect evaporative cooler. The top of the plate-and-tube indirect evaporative cooler is sequentially provided with a water distributor a, a water baffle a, a fan a and an air outlet a from bottom to top. The plate-and-tube indirect evaporative cooling The bottom of the device is provided with a water collecting tank a;

The shell corresponding to the lower section of the plate-and-tube indirect evaporative cooler is also provided with an air inlet a;

The water distributor a is connected to the water collecting tank c through the pipeline G2, and the water pump a is set on the pipeline G2;

Pipe G2 is also connected to collecting tank c through pipe G1.

The dehumidification section includes a moisture-permeable membrane filler, the top of the moisture-permeable membrane filler is provided with a water distributor b, and the bottom of the moisture-permeable membrane filler is provided with a water collecting tank b;

The water collecting tank b is connected to the dehumidifying solution regeneration unit through the pipeline G4 and the pipeline G5, and returns to the water distributor b through the pipeline G3.

The cold water production unit includes a solar collector, a regenerator and a heat exchanger connected in sequence through pipes.

The regenerator includes a shell, and the corresponding two sides of the shell are respectively provided with a regenerator air inlet and a regenerator air outlet, and a filter c, a regeneration section and a fan d are sequentially arranged in the regenerator air inlet according to the air flow direction;

The regeneration section includes the regeneration section moisture permeable membrane packing, the top of the regeneration section moisture permeable membrane packing is provided with a water distributor f, and the bottom of the regeneration section moisture permeable membrane packing is provided with a water collecting tank f;

The water distributor f is connected to the cold water production unit through the pipeline G5 and the pipeline G4 in turn; the water collecting tank f returns to the cold water production unit through the pipeline G3;

A water pump b is installed on the pipeline G3.

The water pump f is set on the pipeline G5.

The beneficial effects of the present utility model are:

(1) The evaporative cooling chiller of the present utility model adopts a moisture-permeable film filler for solution dehumidification, and the dehumidification solution is evenly sprayed on the filler by a water distributor to dehumidify the air isothermally. Separated from the air to be treated, the dehumidification process avoids the risk of liquid carrying, and dehumidification can also reduce the temperature of the cold water outlet;

(2) The evaporative cooling chiller of the present utility model adopts the cold water continuous spray plate tube indirect evaporative cooler produced by the chiller instead of circulating water, which strengthens the pre-cooling effect;

(3) The evaporative cooling chiller of the present invention adopts a solar collector to regenerate the solution by using solar energy;

(4) The evaporative cooling chiller of the utility model adopts the cold water produced by the chiller to cool the regenerated concentrated solution, and then sends it to the dehumidification section to dehumidify the air.

Description of drawings

Fig. 1 is the structural representation of a kind of evaporative cooling chiller based on solution dehumidification technology of the present invention;

2 is a schematic diagram of the water supply and return water of an evaporative cooling chiller based on the solution dehumidification technology of the present invention.

In the figure, 1. air inlet of the unit, 2. filter, 3. surface cooler, 4. water distributor a, 5. indirect evaporative cooler with plate and tube, 6. air outlet a, 7. water baffle a, 8 .fan a, 9. moisture permeable film packing, 10. water distributor b, 11. packing, 12. water baffle b, 13. unit air outlet, 14. fan b, 15. water distributor c, 16. unit shell, 26. water pump a, 27. water collection tank a, 28. air inlet a, 29. water pump b, 30. water collection tank b, 31. water collection tank c, 32. water pump c, 38. solar collector, 39 . water distributor f, 40. filter c, 41. air inlet of regenerator, 42. moisture-permeable membrane packing in regeneration section, 43. water pump f, 44. water collecting tank f, 45. air outlet of regenerator, 46. fan d , 47. Regenerator, 48. Heat exchanger.

Detailed ways

The present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

The utility model is an evaporative cooling chiller based on solution dehumidification technology, as shown in FIG. 1 , comprising a cold water production unit and a dehumidification solution regeneration unit that are connected to each other;

The cold water production unit includes a unit casing 16, a direct evaporative cooling section is arranged inside the unit casing 16, a unit air outlet 13 is arranged on the top of the direct evaporative cooling section, and the unit casings 16 on both sides of the direct evaporative cooling section have symmetrical and identical internal structures. Specifically, it includes the unit air inlet 1 located on the side wall of the unit casing 16. The unit air inlet 1 is sequentially provided with a filter 2, a surface cooler 3, a plate-and-tube indirect evaporative cooling unit, a dehumidification section, and a direct evaporative cooling unit according to the air flow direction. part.

The direct evaporative cooling section includes a filler 11, the top of the filler 11 is provided with a water distributor c15, a water baffle b12, and a fan b14 from bottom to top, and a water collecting tank c31 is provided at the bottom of the filler 11;

The water collecting tank c31 is sequentially connected to the dehumidifying solution regeneration unit and the water distributor c15 through the pipeline G1;

A water pump c32 is provided on the pipeline G1.

The plate-and-tube indirect evaporative cooling unit includes a plate-and-tube indirect evaporative cooler 5. The top of the plate-and-tube indirect evaporative cooler 5 is sequentially provided with a water distributor a4, a water baffle a7, a fan a8 and an air outlet a6 from bottom to top. The bottom of the evaporative cooler 5 is provided with a water collecting tank a27;

The shell corresponding to the lower section of the plate-and-tube indirect evaporative cooler 5 is also provided with an air inlet a28;

The water distributor a4 is connected to the water collecting tank c31 through the pipeline G2, and the water pump a26 is arranged on the pipeline G2;

The pipe G2 is also connected to the collecting tank c31 through the pipe G1.

The dehumidification section includes a moisture-permeable membrane filler 9, the top of the moisture-permeable membrane filler 9 is provided with a water distributor b10, and the bottom of the moisture-permeable membrane filler 9 is provided with a water collecting tank b30;

The water collecting tank b30 is connected to the dehumidifying solution regeneration unit through the pipeline G4 and the pipeline G5, and returns to the water distributor b10 through the pipeline G3.

The cold water production unit includes a solar collector 38, a regenerator 47 and a heat exchanger 48 connected in sequence by pipes.

The regenerator 47 includes a casing, and the corresponding two sides of the casing are respectively provided with a regenerator air inlet 41 and a regenerator air outlet 45, and a filter c40, a regeneration section and a fan are sequentially arranged in the regenerator air inlet 41 according to the air flow direction. d46;

The regeneration section includes the regeneration section moisture permeable membrane packing 42, the top of the regeneration section moisture permeable membrane packing 42 is provided with a water distributor f39, and the bottom of the regeneration section moisture permeable membrane packing 42 is provided with a water collecting tank f44;

The water distributor f39 is connected to the cold water production unit through the pipeline G5 and the pipeline G4 in turn; the water collecting tank f44 is returned to the cold water production unit through the pipeline G3;

A water pump b29 is provided on the pipe G3.

A water pump f43 is installed on the pipe G5.

The working process of the evaporative cooling chiller of the utility model is as follows:

(1) Working process of the wind system

Under the action of the fan b14, the outdoor air enters from the air inlet 1 of the unit on both sides, is purified by the filter 2, and then goes to the surface cooler 3 for wet cooling, and then goes to the plate-and-tube indirect evaporative cooler 5 for wet cooling, and then sent to The dehumidification solution sprayed by the dehumidification section and the water distributor b10 exchanges water vapor through the moisture permeable membrane driven by the water vapor pressure difference. Heat and moisture exchange, take away the heat of the water, and then discharge it from the air supply port 13 of the unit to the outside through the water baffle b12.

Under the action of the fan a8, the outdoor air enters the plate and tube indirect evaporative cooler 5 from the air inlet a28 on the side of the unit, and exchanges heat and moisture with the cold water produced by the unit sprayed from the water distributor a4, taking away the air in the main channel. The heat is then discharged to the outside from the air outlet a6 through the water baffle a7.

Under the action of the fan d46, the outdoor air enters from the air inlet 41 of the regenerator, and after being processed by the filter c40, it is sent to the moisture permeable membrane filler 42 in the regeneration section, and the dilute solution sprayed from the water distributor f39 passes through the moisture permeable membrane in the water vapor. The water vapor exchange is carried out under the driving of the pressure difference, and the water in the dilute solution is taken away and then discharged to the outdoor through the air outlet 45 of the regenerator.

(2) The working process of the water system

Water supply for the unit: As shown in Figure 2, the prepared cold water is sent from the water collection tank c31 to the user or the end of the equipment under the action of the water pump c32, part of the cold water is sent to the heat exchanger 48 to cool the regenerated solution, and the other part of the cold water, The water pump a26 extracts part of the cold water for the indirect evaporative cooler 5 of the spray plate tube.

The return water of the unit: the return water of the unit first goes to the surface cooler a3 to cool the intake air, and then it is combined with the cold water from the water collecting tank a27, and then it is combined with the water returned from the heat exchanger 48 and sent to the water distribution C15, spray to direct evaporative cooling packing, and finally fall back to water collecting tank c31.

Dehumidifying solution: under the action of water pump b29, the concentrated solution regenerated by the regenerator is cooled by the heat exchange between the heat exchanger 48 and the chilled water of the unit to the dehumidification section, and is sprayed on the moisture permeable membrane filler for solution dehumidification through the water distributor b10 The water in the air is taken away and falls back to the water collection tank b30, where the dilute solution meets along the pipe, and is sent to the solar collector 38 under the action of the water pump f43, heated by the solar energy, and then sent to the regenerator 47, and sprayed through the water distributor f39 , the lost water is concentrated and then falls back to the collecting tank f44.

The evaporative cooling chiller of the utility model uses dry air energy and membrane-based solution dehumidification technology to pre-cool and dehumidify the outdoor fresh air. The polymer membrane is separated, the dehumidifying liquid is not in direct contact with the air, and only water molecules are allowed to transmit through osmosis driven by the partial pressure difference of water vapor, which isolates the passage of germs and dehumidifying solution, and has good practical value.

Claims (8)

1. The evaporative cooling chiller based on solution dehumidification technology, is characterized in that, comprises the cold water production unit and the dehumidification solution regeneration unit that are connected to each other; The cold water production unit comprises a unit casing (16), a direct evaporative cooling section is arranged inside the unit casing (16), and a unit air outlet (13) is arranged on the top of the direct evaporative cooling section, and the direct evaporative cooling section is provided with an air outlet (13). The internal structures of the unit casings (16) on both sides are symmetrical and identical, and specifically include the unit air inlets (1) located on the side walls of the unit casings (16), and filters are arranged in the unit air inlets (1) in sequence according to the air flow direction. (2), surface cooler (3), plate and tube indirect evaporative cooling unit, dehumidification section, direct evaporative cooling section. 2 . The evaporative cooling chiller based on solution dehumidification technology according to claim 1 , wherein the direct evaporative cooling section comprises a filler ( 11 ), and the top of the filler ( 11 ) is provided with water distribution from bottom to top. 3 . a water collector c (15), a water baffle b (12), a fan b (14), and a water collecting tank c (31) is arranged at the bottom of the packing (11); The water collecting tank c(31) is sequentially connected to the dehumidifying solution regeneration unit and the water distributor c(15) through the pipeline G1; A water pump c (32) is installed on the pipeline G1. 3. The evaporative cooling chiller based on solution dehumidification technology according to claim 1, wherein the plate-and-tube indirect evaporative cooling unit comprises a plate-and-tube indirect evaporative cooler (5), and the plate-and-tube indirect evaporative cooler (5) The top is provided with a water distributor a (4), a water baffle a (7), a fan a (8) and an air outlet a (6) in order from bottom to top, and the plate-tube indirect evaporative cooler (5) ) bottom is provided with water collecting tank a (27); The shell corresponding to the lower section of the plate-and-tube indirect evaporative cooler (5) is also provided with an air inlet a (28); The water distributor a(4) is connected to the water collecting tank c(31) through the pipeline G2, and the water pump a(26) is arranged on the pipeline G2; The pipeline G2 is also connected to the water collecting tank c (31) through the pipeline G1. 4. The evaporative cooling chiller based on solution dehumidification technology according to claim 1, wherein the dehumidification section comprises a moisture permeable film filler (9), and the top of the moisture permeable film filler (9) is provided with water distribution device b (10), a water collecting tank b (30) is provided at the bottom of the moisture permeable membrane filler (9); The water collecting tank b(30) is connected to the dehumidifying solution regeneration unit through the pipeline G4 and the pipeline G5, and returns to the water distributor b(10) through the pipeline G3. 5. The evaporative cooling chiller based on solution dehumidification technology according to claim 1, wherein the cold water production unit comprises a solar collector (38), a regenerator (47) and a heat exchanger connected in sequence through pipes Heater (48). 6. The evaporative cooling chiller based on solution dehumidification technology according to claim 5, characterized in that, the regenerator (47) comprises a casing, and corresponding two sides of the casing are respectively provided with regenerator air inlets ( 41) and the regenerator air outlet (45), the filter c (40), the regeneration section and the fan d (46) are sequentially arranged in the regenerator air inlet (41) according to the air flow direction. 7. The evaporative cooling chiller based on solution dehumidification technology according to claim 6, wherein the regeneration section comprises a regeneration section moisture permeable membrane filler (42), and the regeneration section moisture permeable membrane filler (42) has The top is provided with a water distributor f (39), and the bottom of the regeneration section moisture permeable membrane filler (42) is provided with a water collecting tank f (44); The water distributor f (39) is sequentially connected to the cold water production unit through the pipeline G5 and the pipeline G4; the water collecting tank f (44) is returned to the cold water production unit through the pipeline G3; A water pump b (29) is provided on the pipeline G3. 8 . The evaporative cooling chiller based on solution dehumidification technology according to claim 7 , wherein a water pump f ( 43 ) is provided on the pipeline G5 .

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