CN211345646U - Dual-cooled evaporative cooling air conditioning unit combining air cooling and evaporative cooling - Google Patents

Abstract

The utility model discloses a combine two cold type evaporative cooling air conditioning unit of forced air cooling and evaporation cold, include air outlet duct and the air treatment runner that top-down formed mutual intercommunication in the unit casing, be provided with compound refrigeration runner and direct evaporative cooling runner in the air treatment runner, the below is provided with indirect evaporative cooling unit in the compound refrigeration runner, indirect evaporative cooling unit top is provided with forced air cooling and evaporative cooling mixed condenser unit and mechanical refrigeration unit, be provided with secondary air intake and primary air intake on the unit casing lateral wall that indirect evaporative cooling unit both ends correspond respectively, be provided with condensation air exit and secondary air exit b on the unit casing lateral wall that the air outlet duct both ends correspond, the air outlet duct corresponds and still is provided with the supply-air outlet on being located same unit casing lateral wall with the condensation air exit. The utility model discloses the complicated area that leads to of pipe connection of having avoided traditional distributed part reaches the inconvenient problem of complete machine transportation greatly.

Description

Dual-cooled evaporative cooling air conditioning unit combining air cooling and evaporative cooling

technical field

The utility model belongs to the technical field of air-conditioning equipment, and relates to a double-cooled evaporative cooling air-conditioning unit combining air cooling and evaporative cooling.

Background technique

Evaporative cooling air-conditioning technology is an energy-saving, environmentally friendly and sustainable air-conditioning technology, which effectively avoids the problems of high initial investment and high operating energy consumption of traditional mechanical refrigeration. Evaporative cooling air conditioners use water as the cooling medium to cool and dissipate heat through water evaporation, and use "dry air energy" to produce cold air or cold water through direct or indirect contact between air and water.

Combining evaporative cooling with traditional mechanical refrigeration can greatly extend the use time of evaporative cooling equipment, reduce the opening time of mechanical refrigeration, and greatly reduce energy consumption, especially in data centers that need to maintain constant temperature and humidity all year round. This method It can achieve low energy consumption and cooling. However, if the mechanical refrigeration section and the evaporative cooling section are directly connected, the volume of the equipment will be too large, it will be difficult to transport, and the floor space will be increased.

Utility model content

The purpose of this utility model is to provide a dual-cooling type evaporative cooling air conditioner unit combining air cooling and evaporative cooling, which adopts modular design and reasonable flow channel arrangement to avoid the floor space caused by the complicated pipeline connection of traditional distributed components. The problem of large and inconvenient transportation of the whole machine.

The technical scheme adopted by the utility model is that a double-cooled evaporative cooling air-conditioning unit combining air cooling and evaporative cooling includes a unit casing, and an air outlet channel and an air treatment flow channel that communicate with each other are formed in the unit casing from top to bottom. The side walls of the unit shell corresponding to both ends of the air outlet are respectively provided with a condensation air outlet and a secondary air outlet b. The composite refrigeration flow channel and the direct evaporative cooling flow channel are sequentially arranged in the channel from front to back. There are secondary air inlets and primary air inlets on the side walls of the unit shell corresponding to both ends of the channel. The primary air treatment channel is provided with an indirect evaporative cooling unit, and the secondary air treatment channel is arranged in sequence from front to back. There are air-cooled and evaporative cooling mixed condenser units and mechanical refrigeration units. The air-cooled and evaporative cooling mixed condenser units and mechanical refrigeration units are connected by pipes to form a circulation loop. Direct evaporative cooling channels are provided with direct evaporative cooling units, which condense and exhaust air. The outlet, the secondary air inlet and the air supply port are located on the same side wall of the unit casing, and the secondary air exhaust port b and the primary air inlet are located on the same side wall of the unit casing;

The air-cooled and evaporative-cooled mixed condenser unit includes a condensing coil, a water distributor b is arranged above the condensing coil, and a water reservoir c and a tuyere c are arranged below the condensing coil in order from top to bottom, and the water distributor b and the accumulator The pool c is connected through the circulating water pipe c, and the condensing coil and the mechanical refrigeration unit are connected through the refrigerant inlet pipe and the refrigerant outlet pipe to form a closed circulation loop;

The direct evaporative cooling unit includes a filler a. Above the filler a, a water distributor a and a water blocking plate a are arranged in order from bottom to top. A reservoir a is arranged below the filler a, and the reservoir a is connected to the water distributor through a circulating water pipe a. a. It also includes a tuyere a that is arranged between the primary air treatment flow channel and the direct evaporative cooling flow channel, and the tuyere a is correspondingly arranged at a position between the filler a and the water reservoir a.

The utility model is also characterized in that,

The indirect evaporative cooling unit includes a filter a, a water distributor c, a plate-fin indirect evaporative cooler and a water baffle b, which are arranged in sequence according to the flow direction of the secondary air. The reservoir d connected to the circulating water pipe b is also provided with a filter b at the primary air inlet.

A circulating water pump b is also arranged on the circulating water pipe b.

A condensation exhaust fan and a unit exhaust fan b are respectively arranged at the condensation air outlet and the secondary air outlet b, and a unit air supply fan is also arranged at the air supply outlet.

A circulating water pump c is also arranged on the circulating water pipe c.

The mechanical refrigeration unit includes an evaporator, the evaporator is connected with a throttle valve and a compressor, the evaporator, the throttle valve, the condensing coil and the compressor are connected in sequence to form a closed loop, and condensed water is arranged under the evaporator from top to bottom. Disc and tuyere b.

The condensate pan is connected to the water reservoir c through a condensate pipe.

A circulating water pump a is arranged on the circulating water pipe a.

The beneficial effects of the present utility model are:

(1) The utility model adopts a container-type shell to make the unit form a whole, and adopts a modular design and a reasonable flow channel arrangement scheme, which avoids the problems of complicated pipeline connection of traditional distributed components, difficult assembly and transportation of the whole machine, Reduce the construction cost and save the floor space at the same time;

(2) The indirect evaporative cooling of the utility model reduces the wet bulb temperature of the primary air, and then continues to cool the condensing coil, and then exchanges heat and mass with the spray water on the surface of the condensing coil to take away the condensation heat, which is directly supplied with the outdoor air. The condenser is cooled down, and the primary air after wet cooling such as indirect evaporative cooling has a lower wet bulb temperature, and the temperature difference between the dry and wet bulbs increases, which can take away more heat from the condenser;

(3) The utility model adopts air-cooled and evaporative-cooled double-cooled condensers, making full use of the latent heat of vaporization of water, and the evaporative cold air uses the air processed by the indirect evaporation section, and the air-cooled air with a lower wet bulb temperature is used for It is the secondary exhaust air, which makes full use of the cooling capacity of the secondary air, fully reduces the temperature of the condensing coil, and reduces the probability of scaling;

(4) The condensed water pipe of the condensed water pan at the lower end of the evaporator of the present utility model is directly connected to the water reservoir of the condenser, making full use of the cooling capacity of the condensed water, and the temperature of the condensed water is lower than the original circulating water temperature of the water reservoir. The water temperature in the reservoir is improved, and the efficiency of the evaporative cooling part of the condenser is improved;

(5) The utility model can meet the refrigeration requirements of different outdoor conditions by adjusting and opening and closing different unit modules.

Description of drawings

Fig. 1 is the external structure schematic diagram of the dual-cooling evaporative cooling air-conditioning unit of the present utility model;

Fig. 2 is the front view of the dual-cooling evaporative cooling air-conditioning unit of the present utility model;

3 is a left side view of the dual-cooling evaporative cooling air-conditioning unit of the present invention;

4 is a schematic structural diagram of a mechanical refrigeration unit in a dual-cooling evaporative cooling air-conditioning unit of the present invention;

5 is a schematic structural diagram of the direct evaporative cooling unit in the air conditioning unit of the present invention.

In the figure, 1. Unit blower, 2. Water baffle a, 3. Water distributor a, 4. Filling a, 5. Condensate pan, 6. Air outlet a, 7. Circulating water pump a, 8. Reservoir a , 9. Secondary air inlet, 10. Air outlet b, 11. Air outlet c, 12. Condensate water pipe, 13. Circulating water pump c, 14. Reservoir c, 15. Condensing coil, 16. Water distributor b, 17. Condensing exhaust fan, 18. Evaporator, 19. Plate-fin indirect evaporative cooler, 20. Filter a, 21. Water distributor c, 22. Circulating water pump b, 23. Reservoir d, 24. Primary Air inlet, 25. Filter b, 26. Water baffle b, 27. Compressor, 28. Secondary air outlet b, 29. Throttle valve, 30. Condensation outlet, 31. Air supply outlet, 32. Unit exhaust fan b, 33. Refrigerant inlet pipe, 34. Refrigerant outlet pipe, 35. Container shell, 36. Circulating water pipe b, 37. Circulating water pipe c, 38. Circulating water pipe a.

Detailed ways

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

The dual-cooling evaporative cooling air conditioning unit of the present invention combines air cooling and evaporative cooling. For the processing flow channel, the side walls of the unit housing 35 corresponding to the two ends of the air outlet are respectively provided with a condensation air outlet 30 and a secondary air outlet b28, and a side wall of the unit housing 35 corresponding to the air outlet is also provided There is an air supply port 31. As shown in Figure 2-3, the air treatment flow channel is provided with a composite cooling flow channel and a direct evaporative cooling flow channel from front to back. The composite cooling flow channel forms an interconnected primary air from bottom to top The secondary air inlet 9 and the primary air inlet 24 are respectively provided on the side walls of the unit casing 35 corresponding to both ends of the primary air treatment channel. There is an indirect evaporative cooling unit. The secondary air treatment channel is provided with an air-cooled and evaporative-cooled mixed condenser unit and a mechanical refrigeration unit in sequence from front to back. The air-cooled and evaporative-cooled mixed condenser unit and the mechanical refrigeration unit are connected by pipes. A circulation loop is formed, a direct evaporative cooling unit is arranged in the direct evaporative cooling channel, the condensation air outlet 30, the secondary air inlet 9 and the air supply outlet 31 are located on the same side wall of the unit housing 35, and the secondary air outlet b28 and the primary air inlet 24 is located on the same side wall of the unit housing 35;

The air-cooled and evaporative-cooled mixed condenser unit includes a condensing coil 15, a water distributor b16 is arranged above the condensing coil 15, and a water reservoir c14 and a tuyere c11 are sequentially arranged below the condensing coil 15 from top to bottom. The b16 and the reservoir c14 are connected through the circulating water pipe c37, and the condensing coil 15 and the mechanical refrigeration unit are connected through the refrigerant inlet pipe 33 and the refrigerant outlet pipe 34 to form a closed circulation loop;

As shown in FIG. 5 , the direct evaporative cooling unit includes a filler a4, a water distributor a3 and a water blocking plate a2 are sequentially arranged above the filler a4 from bottom to top, and a reservoir a8 is arranged below the filler a4, and the reservoir a8 passes through the circulation The water pipe a38 is connected to the water distributor a3, and also includes a tuyere a6 arranged between the primary air treatment flow channel and the direct evaporative cooling flow channel, and the tuyere a6 is correspondingly arranged between the filler a4 and the water reservoir a8.

The indirect evaporative cooling unit includes a filter a20, a water distributor c21, a plate-fin indirect evaporative cooler 19 and a water baffle b26, which are arranged in sequence according to the secondary air flow direction. The water reservoir d23 connected by the circulating water pipe b36 is also provided with a filter b25 at the air inlet 24 of the primary air.

The circulating water pipe b36 is also provided with a circulating water pump b22.

The condensing exhaust port 30 and the secondary air exhaust port b28 are also provided with a condensation exhaust fan 17 and a unit exhaust fan b32 respectively, and the air supply port 31 is also provided with a unit fan 1 .

The circulating water pipe c37 is also provided with a circulating water pump c13.

As shown in FIG. 4 , the mechanical refrigeration unit includes an evaporator 18, and the evaporator 18 is connected with a throttle valve 29 and a compressor 27. The evaporator 18, the throttle valve 29, the condensing coil 15 and the compressor 27 are connected in sequence to form a closed cycle In the circuit, a condensed water pan 5 and a tuyere b10 are sequentially arranged below the evaporator 18 from top to bottom.

The condensate pan 5 is connected to the water reservoir c14 through the condensate pipe 12 .

The tuyere a6, the tuyere c11 and the tuyere b10 are all provided with dampers.

The circulating water pipe a38 is provided with a circulating water pump a7.

The working principle of the air conditioner unit of the present invention is as follows:

(1) Winter cold season (natural cooling mode)

Turn on the unit exhaust fan b32, the unit blower 1 and the air outlet a6, and the circulating water pump b22, the circulating water pump c13 and the circulating water pump a7 are not turned on;

The suction effect of outdoor fresh air on the unit exhaust fan b32 is to enter the wet channel of the plate-fin indirect evaporative cooler 19 from the secondary air inlet 9, and the suction effect of the primary air on the condensing exhaust fan 17 enters from the primary air inlet 24. The plate-fin indirect evaporative cooler 19 is a dry channel, the primary air and outdoor fresh air are in the plate-fin indirect evaporative cooler 19, and the primary air is cooled by the heat conduction and convection of the plate-fin indirect evaporative cooler 19. The suction effect of the unit blower 1 passes through the air outlet a6 and then is sent into the room through the unit air outlet 31, and the outdoor fresh air is discharged from the secondary air outlet b28 through the unit exhaust fan b32.

(2) Summer operation in dry areas (DEC mode)

Turn on the direct evaporative cooling circulating water pump a7, the unit blower 1 and the air outlet a6; the circulating water pump b22, the circulating water pump c13 and the unit exhaust fan b32 are not turned on;

The primary air enters the dry channel of the plate-fin indirect evaporative cooler 19 from the primary air inlet 24 due to the suction effect of the unit blower 1, and passes through the tuyere a6 by the suction effect of the unit blower 1. At the same time, water is stored under the action of the circulating water pump a7. The water in the pool a8 is transported to the water distributor a3 through the circulating water pipe a38, and then sprayed on the filler a4. The primary air exchanges heat and mass with the water on the filler a4, so that the working air is humidified and cooled, and then pumped by the unit blower 1. The suction is sent into the room through the air supply port 31 of the unit.

(3) Summer operation in medium and wet areas (IDEC mode)

Turn on the circulating water pump a7, the circulating water pump b22, the unit blower 1, the unit exhaust fan b32, the air outlet a6, and the circulating water pump c13 is not turned on;

The primary air enters the dry channel of the plate-fin indirect evaporative cooler 19 from the primary air inlet 24 due to the suction effect of the unit blower 1, and the secondary air enters the plate-fin from the secondary air inlet 9 due to the suction effect of the unit exhaust fan b32. Under the action of the circulating water pump b22, the circulating water in the reservoir d23 is transported to the water distributor c21 through the circulating water pipe b36, and then sprayed to the plate of the plate-fin indirect evaporative cooler 19. On the tube, the heat and mass exchange between the secondary air and the water film on the plate tube are humidified and cooled, and then the heat and mass exchange with the primary air in the dry channel, so that the primary air is cooled by moisture, and then the exhaust fan b32 of the unit is pumped. Under the action of suction, the secondary air is discharged from the secondary air outlet 28, and the primary air enters the direct evaporative cooling unit through the air outlet a6 under the action of the unit blower 1, and the water in the reservoir a8 passes through the circulating water pipe under the action of the circulating water pump a7. a38 is transported to the water distributor a3, and then sprayed on the filler a4 to form a water film, the primary air exchanges heat and mass with the water film on the filler a4, and then is sent into the room by the unit air supply port 31 under the action of the unit blower 1.

(4) Summer operation in high humidity areas (IEC mode + DX mode)

Turn on the circulating water pump 22, the unit exhaust fan b32, the condensation exhaust fan 17, the unit supply fan 1, the air outlet b10, and the air outlet c11;

The left side of the condensing coil 15 is the evaporative cooling part, and the right side is the air cooling part;

The primary air enters the dry channel of the plate-fin indirect evaporative cooler 19 from the primary air inlet 24 due to the suction effect of the unit blower 1, and the secondary air enters the plate-fin from the secondary air inlet 9 due to the suction effect of the unit exhaust fan b32. Under the action of the circulating water pump b22, the circulating water in the reservoir d23 is transported to the water distributor c21 through the circulating water pipe b36, and then sprayed to the plate of the plate-fin indirect evaporative cooler 19. On the tube, the heat and mass exchange between the secondary air and the water film on the plate tube is humidified and cooled, and then the heat and mass exchange with the primary air in the dry channel, so that the primary air is cooled in the wet, and the secondary air is exhausted through the plate-fin type. After the indirect evaporative cooler 19 exchanges heat and mass with the shower water in the wet channel, the temperature decreases. Under the action of the unit exhaust fan b32, it enters the air-cooled part of the condensing coil 15 from the tuyere c11, and the condensing coil 15 is cooled. After pre-cooling and heat dissipation, it will be discharged from the secondary air outlet 28 by the unit exhaust fan b32; the primary air will be divided into two parts here, and one part will enter the evaporator 18 through the air outlet b10 under the action of the unit blower 1 for dehumidification and cooling. Then, it is sent into the room from the air outlet 31 of the unit, and the other part is passed into the condensing coil 15 through the air outlet c11 under the action of the condensing exhaust fan 17, and part of the working air is evaporatively cooled. The heat is discharged from the condensing exhaust port 30. In addition, at the lower part of the evaporator 18, there is a condensing water pan 5 connected to the water reservoir of the condensing coil 15. The condensing water will flow into the water tank from the condensing water pipe 12 and mix with the circulating water, reducing water temperature, improve efficiency.

Claims (8)

1. The double-cooled evaporative cooling air-conditioning unit combining air-cooling and evaporative cooling, is characterized in that, comprises a unit casing (35), and in the described unit casing (35), an air outlet that communicates with each other is formed from top to bottom. An air treatment flow channel, the side walls of the unit casing (35) corresponding to both ends of the air outlet channel are respectively provided with a condensation exhaust port (30) and a secondary air exhaust port b (28). A side wall of the corresponding unit casing (35) is also provided with an air supply port (31), and a composite refrigeration flow channel and a direct evaporative cooling flow channel are sequentially arranged in the air treatment flow channel from front to back. A primary air treatment flow channel and a secondary air treatment flow channel that communicate with each other are formed in the channel from bottom to top, and secondary air is respectively provided on the side walls of the unit housing (35) corresponding to both ends of the primary air treatment flow channel. An air inlet (9) and a primary air inlet (24), an indirect evaporative cooling unit is arranged in the primary air treatment flow channel, and a mixture of air cooling and evaporative cooling is sequentially arranged in the secondary air treatment flow channel from front to back A condenser unit and a mechanical refrigeration unit, the air-cooled and evaporative cooling mixed condenser unit and the mechanical refrigeration unit are connected by pipes to form a circulation loop, the direct evaporative cooling flow channel is provided with a direct evaporative cooling unit, and the condensation air outlet (30), the secondary air inlet (9) and the air supply port (31) are located on the same side wall of the unit casing (35), and the secondary air outlet b (28) and the primary air inlet (24) are located on the same side wall of the unit casing (35). On the same side wall of the unit casing (35); The air-cooled and evaporative-cooled mixed condenser unit includes a condensing coil (15), a water distributor b (16) is arranged above the condensing coil (15), and the bottom of the condensing coil (15) goes from top to bottom A reservoir c (14) and a tuyere c (11) are arranged in sequence at the bottom, the water distributor b (16) and the reservoir c (14) are connected by a circulating water pipe c (37), and the condensing coil ( 15) Connecting with the mechanical refrigeration unit through the refrigerant inlet pipe (33) and the refrigerant outlet pipe (34) to form a closed loop; The direct evaporative cooling unit includes a filler a(4), a water distributor a(3) and a water baffle a(2) are sequentially arranged above the filler a(4) from bottom to top, and the filler a(4) ) is provided with a reservoir a (8) below, the reservoir a (8) is connected to the water distributor a (3) through a circulating water pipe a (38), and also includes a primary air treatment channel and The tuyere a(6) between the evaporative cooling channels is directly evaporative, and the tuyere a(6) is correspondingly arranged at a position between the filler a(4) and the water reservoir a(8). 2. The dual-cooling evaporative cooling air conditioning unit according to claim 1, wherein the indirect evaporative cooling unit comprises a filter a (20), a water distributor c (21) arranged in sequence according to the flow direction of the secondary air ), a plate-fin indirect evaporative cooler (19) and a water baffle b (26), and a circulating water pipe b (36) connected to the water distributor c (21) is also provided below the water distributor c (21). ) connected to the reservoir d (23), the primary air inlet (24) is also provided with a filter b (25). 3. The dual-cooling evaporative cooling air conditioning unit according to claim 2, wherein a circulating water pump b (22) is further provided on the circulating water pipe b (36). 4. The air-conditioning unit according to claim 2, characterized in that, the condensation exhaust port (30) and the secondary air exhaust port b (28) are also provided with a condensation exhaust fan (17) and a unit exhaust fan (17) respectively. The blower b (32) is also provided with a unit blower (1) at the air supply port (31). 5 . The dual-cooling evaporative cooling air conditioning unit according to claim 1 , wherein a circulating water pump c ( 13 ) is further provided on the circulating water pipe c ( 37 ). 6 . 6. The dual-cooling evaporative cooling air conditioning unit according to claim 1 or 2, wherein the mechanical refrigeration unit comprises an evaporator (18), and the evaporator (18) is connected with a throttle valve (29) and the compressor (27), the evaporator (18), the throttle valve (29), the condensing coil (15) and the compressor (27) are sequentially connected to form a closed circulation loop, and the evaporator (18) is connected by A condensed water pan (5) and a tuyere b (10) are arranged in sequence from top to bottom. 7 . The dual-cooling evaporative cooling air conditioning unit according to claim 6 , wherein the condensate pan ( 5 ) is connected with the water reservoir c ( 14 ) through a condensate pipe ( 12 ). 8 . 8. The dual-cooling evaporative cooling air conditioning unit according to claim 1, wherein a circulating water pump a (7) is provided on the circulating water pipe a (38).

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