CN212108832U - A multi-stage evaporative cooling air-conditioning unit combining plate-tube indirect and separate heat pipes - Google Patents

Abstract

The utility model discloses a multi-stage evaporative cooling air-conditioning unit with a combination of plate-tube indirect and separated heat pipes, which comprises an organic unit casing. The opposite side walls of the unit casing are respectively provided with a unit air inlet and an air supply outlet. The flow direction entering the unit shell is sequentially provided with a plate-and-tube indirect evaporative cooling unit, a direct evaporative cooling unit, and a blower; a heat pipe heat exchanger is also arranged in the unit shell, and the heat pipe heat exchanger includes the interconnected heat pipe heat exchanger evaporation section and the condensation section of the heat pipe heat exchanger. The evaporation section of the heat pipe heat exchanger is located between the plate-and-tube indirect evaporative cooling unit and the direct evaporative cooling unit. Above the condensing section from bottom to top, a water baffle a and a secondary exhaust fan are arranged in sequence, a secondary air outlet is arranged on the top wall of the unit shell, and a side wall of the unit shell corresponding to one side of the plate-and-tube indirect evaporative cooling unit is arranged There are secondary air inlets.

Description

A multi-stage evaporative cooling air-conditioning unit combining plate-tube indirect and separate heat pipes

technical field

The utility model belongs to the technical field of air-conditioning system equipment, in particular to a multi-stage evaporative cooling air-conditioning unit combined with a plate-and-tube indirect and a separate heat pipe.

Background technique

With the progress of society, people not only pay attention to the function of air conditioner design, but also consider its economy and environmental protection. Evaporative cooling air conditioner as an environmentally friendly air conditioner has more and more influence. Air conditioners are often faced with the problems of high outlet air temperature and low efficiency. Therefore, a widely applicable evaporative cooling air conditioner unit is proposed, which further saves energy and uses multi-stage evaporative cooling to reduce the outlet air temperature and improve the performance of the air conditioner unit.

Utility model content

The purpose of the utility model is to provide a multi-stage evaporative cooling air conditioning unit combining plate-tube indirect and separate heat pipes, adopting a heat-pipe heat exchanger to recover the secondary air cooling capacity for reducing the primary air temperature and further saving energy consumption.

The technical scheme adopted by the utility model is that a multi-stage evaporative cooling air-conditioning unit combined with a plate-tube indirect and a separate heat pipe comprises an organic unit casing, and the opposite side walls of the unit casing are respectively provided with a unit air inlet and an air outlet. The tuyere is provided with a plate-and-tube indirect evaporative cooling unit, a direct evaporative cooling unit, and a blower according to the flow direction of the primary air entering the unit shell; a heat pipe heat exchanger is also arranged in the unit shell, and the heat pipe heat exchanger includes interconnected heat pipes Heat exchanger evaporation section and heat pipe heat exchanger condensation section, heat pipe heat exchanger evaporation section is located between the plate and tube indirect evaporative cooling unit and direct evaporative cooling unit, heat pipe heat exchanger condensation section is located above the plate and tube indirect evaporative cooling unit , The top of the condensation section of the heat pipe heat exchanger is provided with a water baffle a and a secondary exhaust fan in order from bottom to top, and a secondary air outlet is set on the top wall of the unit shell corresponding to the secondary exhaust fan. A secondary air inlet is arranged on the side wall of the unit casing corresponding to one side of the unit.

The utility model is also characterized in that,

The air inlet and the plate-and-tube indirect evaporative cooling unit are provided with filters.

A water blocking plate b is arranged between the direct evaporative cooling unit and the blower.

The plate-and-tube indirect evaporative cooling unit includes a water distribution device a, a plate-and-tube heat exchanger and a circulating water tank a, which are arranged in sequence from top to bottom; the water distribution device a is connected to the circulating water tank a through the first water pipe, and the secondary air inlet is located at the On the side wall of the unit casing corresponding between the circulating water tank a and the plate-and-tube heat exchanger.

The first water pipe is also provided with a circulating water pump a.

The direct evaporative cooling unit includes a water distribution device b, a filler and a circulating water tank b arranged in sequence from top to bottom, and the water distribution device b is connected to the circulating water tank b through a second water pipe.

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

The beneficial effects of the present utility model are:

(1) The multi-stage evaporative cooling air-conditioning unit of the present utility model adopts a vertical finned plate and tube heat exchanger. The flow channel is wide and the flow resistance is small; the scouring effect of the circulating water in the secondary air channel makes it difficult to block; and the fins are added outside the pipe to enhance heat exchange and also play a supporting and protective role.

(2) The multi-stage evaporative cooling air-conditioning unit of the present utility model adopts a separate heat pipe heat exchanger to recover the secondary air cooling capacity, and simultaneously cools the humidity of the primary passage air to reduce its wet bulb temperature.

(3) In the multi-stage evaporative cooling air conditioning unit of the present utility model, the condensing section of the heat pipe heat exchanger adopts an inclined arrangement, which is convenient for the condensed liquid to flow into the evaporating section.

(4) The multi-stage evaporative cooling air-conditioning unit of the present invention adopts the plate tube, the heat pipe heat exchanger and the direct evaporative cooling section to perform three-stage evaporative cooling treatment on the primary air, further reducing the outlet air temperature and improving the unit efficiency.

(5) The multi-stage evaporative cooling air-conditioning unit of the present utility model can utilize dry air energy and advanced heat pipe heat exchange technology to perform wet cooling treatment on outdoor fresh air or indoor return air, and the heat pipe heat exchanger has extremely high heat exchange capacity. , heat and moisture exchange can occur even at a small temperature difference, which is why the vertical plate tube is placed before the heat pipe heat exchanger.

Description of drawings

FIG. 1 is a schematic structural diagram of a multi-stage evaporative cooling air-conditioning unit combined with a plate tube indirect and a separate heat pipe according to the present invention.

In the figure, 1. Unit air inlet, 2. Filter, 3. Secondary air outlet, 4. Secondary exhaust fan, 5. Water baffle a, 6. Condensing section of heat pipe heat exchanger, 7. Water distribution device a , 8. Plate and tube heat exchanger, 9. Evaporation section of heat pipe heat exchanger, 10. Water distribution device b, 11. Packing, 12. Water baffle b, 13. Blower, 14. Air supply port, 15. Circulating water tank b , 16. Circulating water pump b, 17. Secondary air inlet, 18. Circulating water tank a, 19. Circulating water pump a.

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 a multi-stage evaporative cooling air-conditioning unit combining plate-tube indirect and separate heat pipes, as shown in FIG. Air inlet 14, a primary air channel is formed inside the unit casing between the air inlet 1 and the air supply outlet 14, and a plate-and-tube indirect evaporative cooling unit, a direct evaporative cooling unit, and a blower 13 are arranged in sequence according to the flow direction of the primary air entering the unit casing. The unit shell is also provided with a heat pipe heat exchanger, and the heat pipe heat exchanger includes the interconnected heat pipe heat exchanger evaporation section 9 and the heat pipe heat exchanger condensation section 6, and the heat pipe heat exchanger evaporation section 9 is located in the plate-and-tube indirect evaporative cooling Between the unit and the direct evaporative cooling unit, the condensing section 6 of the heat pipe heat exchanger is located above the plate-and-tube indirect evaporative cooling unit. Above the condensing section 6 of the heat pipe heat exchanger are sequentially provided with a water blocking plate a5 and a secondary exhaust fan 4 from bottom to top , a secondary air outlet 3 is arranged on the top wall of the unit casing corresponding to the secondary exhaust fan 4, and a secondary air inlet 17 is arranged on the side wall of the unit casing corresponding to one side of the plate-and-tube indirect evaporative cooling unit to avoid The phenomenon of rushing with the primary air occurs; a secondary air channel is formed inside the unit shell between the secondary air inlet 17 and the secondary air outlet 3, and the evaporating section 9 of the heat pipe heat exchanger and the condensation section 6 of the heat pipe heat exchanger are respectively placed. No ventilation passages are used to recover cold energy and reduce the temperature of primary air. The condensing section 6 of the heat pipe heat exchanger is arranged in an inclined manner, which is convenient for the condensate to flow into the evaporation section 9 of the heat pipe heat exchanger.

The air inlet 1 and the plate-and-tube indirect evaporative cooling unit are provided with a filter 2 .

A water blocking plate b12 is provided between the direct evaporative cooling unit and the blower 13 .

The plate-and-tube indirect evaporative cooling unit includes a water distribution device a7, a plate-and-tube heat exchanger 8 and a circulating water tank a18 arranged in sequence from top to bottom; the water distribution device a7 is connected to the circulating water tank a18 through the first water pipe, and the secondary air inlet 17 is located on the side wall of the unit casing corresponding between the circulating water tank a18 and the plate-and-tube heat exchanger 8.

The first water pipe is also provided with a circulating water pump a19.

The direct evaporative cooling unit includes a water distribution device b10, a filler 11 and a circulating water tank b15 arranged in sequence from top to bottom. The water distribution device b10 is connected to the circulating water tank b15 through a second water pipe.

A circulating water pump b16 is also provided on the second water pipe.

The blower 13 is a press-in type fan, the secondary exhaust fan 4 is a suction type fan, and is a DC type fan, and the circulating water pump a19 and the circulating water pump b16 are also DC type water pumps.

The plate-and-tube heat exchanger 8 adopts a ribbed design.

The working process of the multi-stage evaporative cooling air-conditioning unit combined with the indirect plate-tube and the separated heat pipe of the utility model is as follows:

The working process of the wind system:

Primary air: Under the action of the blower 13, the outdoor air enters from the air inlet 1 of the unit, is filtered by the filter 2, goes to the plate-and-tube heat exchanger 8 for cooling, and then goes to the evaporating section 9 of the heat-pipe heat exchanger to cool down and then goes to the filler 11 for direct evaporative cooling After cooling, it is sent into the air conditioning area from the air supply port 14 through the water blocking plate b12.

Secondary air: Under the action of the secondary exhaust fan 4, the outdoor air enters from the secondary air inlet 17 on the side of the unit shell, and exchanges heat and moisture with the sprayed circulating water in the plate-and-tube heat exchanger 8. The secondary air goes to the condensing section 6 of the heat pipe heat exchanger to absorb heat and then is discharged to the outside through the secondary air outlet 3.

The working process of the water system:

Under the action of circulating water pump a19 and circulating water pump b16, circulating water tank a18 and circulating water tank b15 are uniformly sprayed with circulating water on plate and tube heat exchanger 8 and packing 11 by water distribution device a7 and water distribution device b10. Heat and moisture exchange, water evaporation absorbs the sensible heat of the air, cools the air, and then falls back to the corresponding circulating water tank a18 and circulating water tank b15, and is sent up by the corresponding circulating water pump a19 and circulating water pump b16 to complete the cycle.

Operation mode:

When it is hot in summer, the plate-and-tube heat exchanger 8, the heat-pipe heat exchanger and the direct evaporative cooling unit all operate to complete the cooling and humidification. cooling and humidification.

Claims (7)

1. A plate-tube indirect and separated heat pipe combined multistage evaporative cooling air conditioning unit is characterized by comprising a unit shell, wherein unit air inlets (1) and air outlets (14) are respectively arranged on two opposite side walls of the unit shell, and a plate-tube indirect evaporative cooling unit, a direct evaporative cooling unit and an air feeder (13) are sequentially arranged in the flow direction of primary air entering the unit shell; still be provided with heat pipe exchanger in the unit casing, heat pipe exchanger includes interconnect's heat pipe exchanger evaporation zone (9) and heat pipe exchanger condensation segment (6), heat pipe exchanger evaporation zone (9) are located between indirect evaporative cooling unit of tube sheet formula and the direct evaporative cooling unit, heat pipe exchanger condensation segment (6) are located the indirect evaporative cooling unit top of tube sheet formula, and heat pipe exchanger condensation segment (6) top is provided with breakwater a (5) and secondary exhaust fan (4) by supreme down in proper order, is provided with secondary air outlet (3) on the unit casing roof that secondary exhaust fan (4) top corresponds, is provided with secondary air intake (17) on the unit casing lateral wall that indirect evaporative cooling unit one side of tube sheet corresponds.

2. The plate-tube indirect and split heat pipe combined multistage evaporative cooling air conditioning unit as claimed in claim 1, wherein the air inlet (1) and the plate-tube indirect evaporative cooling unit are provided with a filter (2).

3. The combined indirect and split heat pipe multistage evaporative cooling air conditioning unit of claim 1, wherein a water baffle b (12) is provided between the direct evaporative cooling unit and the blower (13).

4. The plate-tube indirect and separated heat pipe combined multistage evaporative cooling air conditioning unit as claimed in claim 1, wherein the plate-tube indirect evaporative cooling unit comprises a water distribution device a (7), a plate-tube heat exchanger (8) and a circulating water tank a (18) which are sequentially arranged from top to bottom; the water distribution device a (7) is connected with the circulating water tank a (18) through a first water pipe, and the secondary air inlet (17) is positioned on the side wall of the unit shell corresponding to the space between the circulating water tank a (18) and the plate-pipe heat exchanger (8).

5. The plate-tube indirect and separated heat pipe combined multistage evaporative cooling air conditioning unit as claimed in claim 4, wherein the first water pipe is further provided with a circulating water pump a (19).

6. The plate-tube indirect and separated heat pipe combined multistage evaporative cooling air conditioning unit according to claim 1, wherein the direct evaporative cooling unit comprises a water distribution device b (10), a filler (11) and a circulating water tank b (15) which are sequentially arranged from top to bottom, and the water distribution device b (10) is connected with the circulating water tank b (15) through a second water pipe.

7. The plate-tube indirect and separated heat pipe combined multistage evaporative cooling air conditioning unit as claimed in claim 6, wherein the second water pipe is further provided with a circulating water pump b (16).

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