CN206831742U - Indirect direct evaporating-cooling and the compound energy-saving type air conditioner unit of evaporative condenser - Google Patents

Abstract

The utility model discloses an energy-saving air-conditioning unit combined with indirect-direct evaporative cooling and evaporative condensation, comprising an organic unit casing and a wind-solar complementary power generation mechanism arranged outside the unit casing; Air inlet and air outlet; in the unit shell, there are plate tube-packing-cool mist compound indirect evaporative cooler, plate tube evaporative condensation mechanism, water baffle c and blower, plate tube-packing in sequence according to the air flow direction after entering ‑The top wall of the corresponding unit shell above the cold mist composite indirect evaporative cooler is provided with an air outlet a, and the corresponding top wall of the unit shell above the plate tube evaporative condensing mechanism is provided with an air exhaust port b; the plate tube‑ The filler-cool mist composite indirect evaporative cooler, the plate tube evaporative condensing mechanism and the blower are all connected to the wind-solar hybrid power generation mechanism. The energy-saving air-conditioning unit of the utility model solves the problems of low cooling efficiency and high energy consumption of traditional condensers.

Description

Indirect-direct evaporative cooling and evaporative condensation combined energy-saving air conditioning unit

technical field

The utility model belongs to the technical field of air-conditioning equipment, in particular to an energy-saving air-conditioning unit combined with indirect-direct evaporative cooling and evaporative condensation.

Background technique

Traditional air-cooled mechanical refrigeration has low efficiency and high energy consumption, and is prone to failure and shutdown in extreme environments. Although the cooling efficiency of the existing water-cooled mechanical refrigeration has been improved, the system structure is relatively complicated, it is not easy to maintain and the machine room occupies a large space, and the use of cooling towers will also cause many negative effects on the surrounding environment.

Evaporative condensation technology integrates evaporative cooling and mechanical refrigeration condensers, which can significantly improve the cooling efficiency of the condenser. However, the actual application of this technology is still relatively small, and the form of air-conditioning units combined with evaporative condensation technology is relatively scarce, which is difficult to meet Requirements for different working conditions. In addition, most of the existing air-conditioning units use traditional high-grade energy, and the energy consumption of the air-conditioning system is high. Under the current social background and the development of the refrigeration and air-conditioning industry, it is urgent to strengthen the use of clean and renewable energy in air-conditioning technology and equipment.

Utility model content

The purpose of this utility model is to provide an energy-saving air-conditioning unit combined with indirect-direct evaporative cooling and evaporative condensation, which solves the problems of low cooling efficiency and high energy consumption of traditional condensers, and meets the needs of different working conditions through multiple working modes.

The technical solution adopted in the utility model is that the energy-saving air-conditioning unit combined with indirect-direct evaporative cooling and evaporative condensation includes an organic unit casing and a wind-solar complementary power generation mechanism arranged outside the unit casing; There are primary air inlets and outlets, and air valves are installed in the primary air inlets; the unit shell is equipped with plate tube-filler-cooling mist composite indirect evaporative coolers and plate tube evaporative coolers in sequence according to the direction of air flow after entering. The condensing mechanism, water baffle c and blower, the top wall of the corresponding unit shell above the plate tube-filler-cooling mist composite indirect evaporative cooler is provided with an air outlet a, and the corresponding unit shell above the plate tube evaporative condensing mechanism The top wall of the body is provided with an air outlet b; the plate tube-filler-cold mist composite indirect evaporative cooler, the plate tube evaporative condensing mechanism and the blower are all connected to the wind-solar hybrid power generation mechanism.

The utility model is also characterized in that:

The energy-saving air-conditioning unit combined with indirect-direct evaporative cooling and evaporative condensation of the utility model also includes an exhaust fan a arranged in the air outlet a and an exhaust fan b arranged in the air outlet b, and the exhaust fan a and The exhaust fan b is connected with the wind-solar hybrid power generation mechanism.

The wind and solar hybrid power generation mechanism includes wind power generation devices and photovoltaic panels, and the wind power generation devices and photovoltaic panels are connected to the controller, and the controller is connected to the battery; The plate tube evaporative condensing mechanism, the blower, the exhaust fan a and the exhaust fan b are connected.

Both the exhaust fan a and the exhaust fan b are axial flow fans; the blower adopts a centrifugal fan.

Plate tube-packing-cool mist compound indirect evaporative cooler, including air heat exchange plate tube group and spray device vertically arranged behind the air heat exchange plate tube group, and between the air heat exchange plate tube group and spray device A return air area is formed between the return air area, and the side wall of the unit shell corresponding to the return air area is provided with a return air port; an air filter is provided between the air heat exchange plate tube group and the primary air inlet; A layered packing unit, a water distributor a and a water retaining plate a are provided, and a water storage tank a is arranged under the tube group of the air heat exchange plate, and two The secondary air flow channel, the side wall of the unit shell corresponding to the secondary air flow channel is provided with a secondary air inlet, the water storage tank a is connected to the water supply main pipe, the water supply main pipe is connected to the water distributor a through the first water supply branch pipe, and the water supply main pipe It is also connected with the spraying device through the second water supply branch pipe.

The air filter is a coarse-medium effect composite air filter; a coarse-medium effect composite air filter is installed in the secondary air inlet; the layered packing unit is mainly composed of packing b and packing a arranged up and down, And an air passage is formed between the packing b and the packing a.

The main water supply pipe is provided with a water pump b, and the water pump b is located in the water storage tank a as a submersible pump, and the water pump b is connected to the controller; the first water supply branch pipe is provided with a water filter b, and the second water supply branch pipes are respectively provided with regulating valves , water filter c.

The plate-tube evaporative condensing mechanism includes a plate-tube evaporative condenser and a mechanical refrigeration system connected together; Reversing valve, compressor, evaporator-condenser integrated mechanism and throttle valve form a closed loop; above the evaporative condensing plate tube, there are water distributor b and water baffle b in sequence, and below the evaporative condensing plate tube A water storage tank b is provided, and an air duct is formed between the evaporative condensation plate tube and the water storage tank b. The side wall of the unit shell corresponding to the air duct is provided with a condensing exhaust air inlet. Water distributor b is connected.

The water storage pipe is respectively provided with a water filter a and a water pump a, and the water pump a is connected with the controller.

A coarse-medium effect composite air filter is installed in the condensate exhaust air inlet.

The beneficial effects of the utility model are:

(1) The energy-saving air-conditioning unit of the present utility model organically combines plate tube-packing indirect evaporative cooling technology, cold mist direct evaporative cooling technology and plate tube evaporative condensation technology to realize a high degree of integration of evaporative cooling and mechanical refrigeration technology, further The use of evaporative cooling can significantly save energy consumption of mechanical refrigeration;

(2) The energy-saving air-conditioning unit of the present utility model organically combines the plate-tube air heat exchanger and the packing-type direct evaporative cooler, and the air heat-exchange plate tube adopts cross arrangement to enhance the degree of secondary air turbulence, while in All air heat exchange plate tubes are layered with fillers, which can prolong the contact time between the secondary air of indirect evaporative cooling and spray water, enhance the wet bulb efficiency of indirect evaporative cooling and the sensible heat load that can be borne, and reduce more The cooling load that the mechanical refrigeration cycle may bear;

(3) The energy-saving air-conditioning unit of the present utility model combines the direct evaporative cooling of the cold mist with the indirect evaporative cooling of the plate tube-packing type. Cool water, and adjust the spray volume properly through the regulating valve; direct evaporative cooling of cold mist can not only increase the contact area between air and water, enhance the heat and mass exchange capacity, but also reduce the wind resistance loss of the unit and reduce the treatment of circulating water;

(4) The energy-saving air-conditioning unit of the present utility model is driven by wind-solar complementary power generation, which can effectively increase the utilization of clean and renewable energy, and meet the needs of different working conditions through multiple working modes, and can effectively improve the performance of the air-conditioning unit.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model energy-saving air-conditioning unit.

In the figure, 1. primary air inlet, 2. air filter, 3. filler a, 4. filler b, 5. water distributor a, 6. water baffle a, 7. air outlet a, 8. row Fan a, 9. Compressor, 10. Four-way reversing valve, 11. Condensation exhaust air inlet, 12. Exhaust air b, 13. Exhaust fan b, 14. Water baffle b, 15. Water distributor b , 16. Evaporative condenser plate tube, 17. Water filter a, 18. Water pump a, 19. Wind power generation device, 20. Battery, 21. Photovoltaic panel, 22. Air heat exchange plate tube group, 23. Secondary air Air inlet, 24. water storage tank a, 25. water pump b, 26. water filter b, 27. regulating valve, 28. water filter c, 29. air return port, 30. spraying device, 31. water storage tank b , 32. Evaporator-condenser integrated mechanism, 33. Throttle valve, 34. Water baffle c, 35. Blower fan, 36. Air outlet.

detailed description

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

The energy-saving air conditioning unit combined with indirect-direct evaporative cooling and evaporative condensation of the utility model, as shown in Figure 1, includes an organic unit casing and a wind-solar complementary power generation mechanism arranged outside the unit casing; There are primary air inlet 1 and air outlet 36; the unit shell is provided with plate tube-filler-cold mist composite indirect evaporative cooler, plate tube evaporative condensing mechanism, water baffle c34 and Blower 35, an exhaust outlet a7 is provided on the top wall of the corresponding unit shell above the plate tube-filler-cooling mist composite indirect evaporative cooler, and an exhaust port a7 is provided on the corresponding top wall of the unit shell above the plate tube evaporative condensing mechanism. The tuyere b12; the plate tube-filler-cold mist composite indirect evaporative cooler, the plate tube evaporative condensation mechanism and the blower 35 are all connected to the wind-solar hybrid power generation mechanism.

The energy-saving air-conditioning unit combined with indirect-direct evaporative cooling and evaporative condensation of the utility model, as shown in Figure 1, also includes an exhaust fan a8 arranged in the air outlet a7 and an exhaust fan b13 arranged in the air outlet b12, In addition, both the exhaust fan a8 and the exhaust fan b13 are connected to the wind-solar hybrid power generation mechanism.

The wind-solar hybrid power generation mechanism, as shown in Figure 1, includes a wind power generation device 19 and a photovoltaic panel 21, and the wind power generation device 19 and the photovoltaic panel 21 are connected to the controller, and the controller is connected to the storage battery 20; -Filler-cold mist composite indirect evaporative cooler, plate tube evaporative condensing mechanism, air blower 35, exhaust fan a8 and exhaust fan b13 are connected.

Among them, the wind power generation device 19, the storage battery 20, the controller and the photovoltaic panel 21 are all arranged on the top wall of the casing of the unit; the photovoltaic panel 21 is arranged obliquely and faces the sun, which is convenient for fully absorbing sunlight. When the wind-solar hybrid power generation mechanism cannot meet the requirements, it can switch to municipal power supply.

A damper is arranged in the primary air inlet 1 .

Both the exhaust fan a8 and the exhaust fan b13 are axial fans; the blower 35 adopts a centrifugal fan.

The plate tube-filler-cold mist compound indirect evaporative cooler, as shown in Figure 1, includes an air heat exchange plate tube group 22 and a spray device 30 vertically arranged behind the air heat exchange plate tube group 22, and in the air A return air area is formed between the heat exchange plate tube group 22 and the spray device, and a return air port 29 is arranged on the side wall of the unit shell corresponding to the return air area; Air filter 2; a layered packing unit, a water distributor a5 and a water baffle a6 are sequentially arranged above the air heat exchange plate tube group 22, and a water storage tank a24 is arranged below the air heat exchange plate tube group 22, and A secondary air flow channel is formed between the air heat exchange plate tube group 22 and the water storage tank a24, and a secondary air inlet 23 is provided on the side wall of the unit casing corresponding to the secondary air flow channel; the water storage tank a24 is connected to the water supply Main pipe, the water supply main pipe is connected with the water distributor a5 through the first water supply branch pipe, and the water supply main pipe is also connected with the spraying device 30 through the second water supply branch pipe.

The air heat exchange plate tube group 22 is composed of a plurality of horizontally arranged air heat exchange plate tubes.

The air filter 2 is a coarse-medium effect composite air filter.

The secondary air inlet 23 is provided with a coarse-medium effect composite air filter.

The layered packing unit is mainly composed of packing b4 and packing a3 arranged up and down, and an air flow channel is formed between packing b4 and packing a3.

A water pump b25 is installed on the water supply main pipe, and the water pump b25 is located in the water storage tank a24 as a submersible pump, and the water pump b25 is connected to the controller; a water filter b26 is installed on the first water supply branch pipe, and a regulating valve is respectively installed on the second water supply branch pipe 27. Water filter c28.

The outer wall of the water storage tank a24 is respectively provided with a water supply port and a water discharge port, and a ball float valve is arranged in the water storage tank a24.

The plate and tube evaporative condensation mechanism, as shown in Figure 1, includes a plate and tube evaporative condenser and a mechanical refrigeration system connected together; the plate and tube evaporative condenser includes an evaporative condensing plate tube 16, an evaporative condensing plate The pipe 16 forms a closed circuit with the four-way reversing valve 10, the compressor 9, the evaporator-condenser integrated mechanism 32 and the throttle valve 33 through the pipeline in sequence; the water distributor b15 is arranged in sequence above the evaporative condenser plate pipe 16 , water baffle b14, a water storage tank b31 is arranged below the evaporative condenser plate tube 16, an air duct is formed between the evaporative condenser plate tube 16 and the water storage tank b31, and the side wall of the unit housing corresponding to the air duct is provided with The condensing exhaust air inlet 11; the water storage tank b31 is connected with the water distributor b15 through the water storage pipe.

The water storage pipe is respectively provided with a water filter a17 and a water pump a18, and the water pump a18 is connected with the controller.

A coarse-medium effect composite air filter is arranged in the condensing exhaust air inlet 11 .

The outer wall of the water storage tank b31 is respectively provided with a water supply port and a water discharge port, and a ball float valve is provided in the water storage tank b31.

The energy-saving air-conditioning unit combined with indirect-direct evaporative cooling and evaporative condensation of the utility model can realize the working mode and working process as follows:

(1) Indirect-direct evaporative cooling (IDEC) mode:

Open the plate tube-filler-cool mist composite indirect evaporative cooler and other related devices, the specific working process is as follows:

The primary air is sucked into the casing of the unit by the blower 35 from the primary air inlet 1, and the primary air is filtered by the air filter 2 to form clean primary air; the clean primary air enters the air heat exchange plate tube group 22, and the secondary The secondary air is sucked from the secondary air inlet 23 into the secondary air channel under the action of the exhaust fan a8, and is sprayed with the water film on the outer surface of each air heat exchange plate tube and the air heat exchange plate tube from bottom to top. Water droplets undergo heat and moisture exchange, indirectly cool the primary air in the air heat exchange plate tube, then pass through the filler a3 and filler b4 in turn, and exchange heat and moisture with the water sprayed by the water distributor a5 at the filler a3 and filler b4; Then filter the excess water through the water retaining plate a6; finally, under the action of the exhaust fan a8, it is discharged from the casing of the unit through the air outlet a7;

At the same time, the primary air that has been wet-cooled in the air heat exchange plate tube flows into the return air area, fully contacts with the water mist sprayed by the spray device 30, and undergoes direct evaporative cooling, and finally passes through the air outlet 36 under the action of the blower 35 And the corresponding pipes are sent to the air-conditioning area.

This mode is mainly aimed at the transitional season and hot summer cooling conditions in dry areas. Under certain conditions, it can be properly adjusted by the regulating valve 27. At this time, part of the indoor return air can also be used as the secondary air.

(2) Indirect evaporative cooling + evaporative condensation mechanical refrigeration (IEC+DX) mode, the specific working process is as follows:

The primary air is sucked into the casing of the unit by the blower 35 from the primary air inlet 1, and the primary air is filtered by the air filter 2 to form clean primary air; the clean primary air enters the air heat exchange plate tube group 22, and the secondary The secondary air is sucked from the secondary air inlet 23 into the secondary air channel under the action of the exhaust fan a8, and is sprayed with the water film on the outer surface of each air heat exchange plate tube and the air heat exchange plate tube from bottom to top. Water droplets undergo heat and moisture exchange, indirectly cool the primary air in the air heat exchange plate tube, then pass through the filler a3 and filler b4 in turn, and exchange heat and moisture with the water sprayed by the water distributor a5 at the filler a3 and filler b4; Then filter the excess water through the water retaining plate a6; finally, under the action of the exhaust fan a8, it is discharged from the casing of the unit through the air outlet a7;

At the same time, under the action of the exhaust fan b13, the condensed exhaust air is sucked into the casing of the unit through the condensed exhaust air inlet 11 and flows from bottom to top, where it meets the water sprayed by the water distributor b15 at the evaporative condensing plate tube 16 Heat and moisture exchange, take away the heat of condensation, and then filter the excess water in the air through the water baffle b14, and then discharge the unit shell through the exhaust port a12 under the action of the exhaust fan b13; and through the plate tube-filler-cooling fog The wet-cooled primary air such as the composite indirect evaporative cooler is mixed with the indoor return air entering the unit casing through the return air outlet 29, and then the evaporator-condenser integrated mechanism 32 (used as an evaporator in summer) is used to cool and dehumidify. Finally, the blower 35 is sent into the air-conditioning area through the air outlet 36 and corresponding pipelines.

This mode is mainly for cooling conditions in hot summer, and for the transitional season when mechanical refrigeration needs to be turned on, the water pump a18 can be turned off on the basis of the above-mentioned IEC+DX operation mode, and the water distributor b15 can be stopped. At this time, the plate tube The evaporative condensing mechanism adopts the form of air cooling. For the plate tube-filler-cooling mist compound indirect evaporative cooler, under certain conditions, part of the indoor return air can be used as the secondary air.

(3) Free cooling (fc) mode:

At this time, only the blower 35, the exhaust fan a8, the primary air inlet 1, the secondary air inlet 23 and other related devices are turned on, and the specific working process is as follows:

The primary air (using indoor return air) is sucked into the casing of the unit from the primary air inlet 1 of the blower 35, and the primary air is filtered by the air filter 2 to form clean primary air; the clean primary air enters the air heat exchange plate The pipe group 22 is indirectly cooled; then it is sent to the air-conditioning area by the blower 35 through the air outlet 36;

Simultaneously, the secondary air (adopting outdoor fresh air) is inhaled from the secondary air inlet 23 under the action of the exhaust fan a8, transported through the secondary air channel, and indirectly cools the primary air in the air heat exchange plate tube; finally, the exhaust fan a8 Exhaust the casing of the unit from the air outlet a7;

In addition, under certain conditions, the primary air can be properly humidified by the spray device 30 .

This mode is mainly for natural cooling conditions in winter.

(4) Heating (H) mode:

At this time, only the blower 35, exhaust fan a8, spraying device 30, all air inlets (primary air inlet 1, condensing exhaust air inlet 11 and secondary air inlet 23) and other related devices are turned on, and the original mechanical refrigeration cycle (The air-cooled type when the water pump a18 is turned off) is switched to "air source heat pump cycle" through the four-way reversing valve 10, and the specific working method is as follows:

The primary air (outdoor fresh air) is inhaled from the primary air inlet 1 under the action of the blower 35, filtered by the air filter 2, enters the air heat exchange plate tube to be preheated, and then enters the room in the unit shell through the air return port 29 The return air is mixed, then properly humidified by the spray device 30, and finally the reheat is provided by the evaporator-condenser integrated mechanism 32 (used as a condenser in winter), and sent to the air-conditioning area through the air outlet 36 under the action of the blower 35 ;

At the same time, the secondary air (using part of the indoor return air) is inhaled from the secondary air inlet 23 under the action of the exhaust fan a8 and preheats the primary air in the air heat exchange plate tube; The exhaust port a7 discharges the casing of the unit;

At this time, another part of air (using part of the indoor return air) is sucked from the condensing exhaust air inlet 11 under the action of the exhaust fan b13, and then absorbs heat through the evaporator-condenser integrated mechanism 32 (used as a condenser in winter), Finally, under the action of the exhaust fan b13, the unit casing is discharged from the exhaust port b12.

This mode is mainly aimed at heating conditions in winter. In addition, when the return air is insufficient, part of the outdoor fresh air can be used to provide heat for the evaporator-condenser integrated mechanism 32 (used as a condenser in winter).

Claims (10)

1. An energy-saving air-conditioning unit combined with indirect-direct evaporative cooling and evaporative condensation, which is characterized in that it includes an organic unit casing and a wind-solar hybrid power generation mechanism arranged outside the unit casing; There is a primary air inlet (1) and an air outlet (36). The primary air inlet (1) is provided with a damper; the casing of the unit is sequentially provided with plate tubes-fillers-cooling Fog compound indirect evaporative cooler, plate tube evaporative condensing mechanism, water baffle c (34) and blower (35), the corresponding unit shell top above the plate tube-filler-cold mist compound indirect evaporative cooler An air outlet a (7) is provided on the wall, and an air outlet b (12) is provided on the top wall of the unit shell corresponding to the plate tube evaporative condensing mechanism; the plate tube-filler-cooling fog composite The indirect evaporative cooler, the plate-tube evaporative condensing mechanism and the blower (35) are all connected with the wind-solar hybrid power generation mechanism. 2. The energy-saving air-conditioning unit according to claim 1, characterized in that it also includes an exhaust fan a (8) arranged in the air outlet a (7) and an exhaust fan a (8) arranged in the air outlet b (12). fan b (13), and the exhaust fan a (8) and the exhaust fan b (13) are both connected to the wind-solar hybrid power generation mechanism. 3. The energy-saving air-conditioning unit according to claim 1 or 2, characterized in that, the wind-solar hybrid power generation mechanism includes a wind power generation device (19) and a photovoltaic panel (21), and the wind power generation device (19) and the photovoltaic panel (21) are all connected to the controller, and the controller is connected to the storage battery (20); The controller is respectively connected with the plate tube-filler-cold mist composite indirect evaporative cooler, the plate tube evaporative condensation mechanism, the blower (35), the exhaust fan a (8) and the exhaust fan b (13). 4. The energy-saving air-conditioning unit according to claim 3, characterized in that, said exhaust fan a (8) and exhaust fan b (13) are both axial flow fans; The air blower (35) adopts a centrifugal fan. 5. The energy-saving air-conditioning unit according to claim 3, characterized in that, the plate tube-filler-cold mist composite indirect evaporative cooler includes an air heat exchange plate tube group (22) and is vertically arranged in the air The spray device (30) behind the heat exchange plate tube group (22), and a return air area is formed between the air heat exchange plate tube group (22) and the spray device (30), and the unit corresponding to the return air area An air return port (29) is arranged on the side wall of the housing; An air filter (2) is arranged between the air heat exchange plate tube group (22) and the primary air inlet (1); A layered packing unit, a water distributor a (5) and a water baffle a (6) are sequentially arranged above the air heat exchange plate tube group (22), and the air heat exchange plate tube group (22) A water storage tank a (24) is arranged below, and a secondary air flow channel is formed between the air heat exchange plate tube group (22) and the water storage tank a (24), and the secondary air flow channel corresponds to A secondary air inlet (23) is provided on the side wall of the casing of the unit, and the water storage tank a (24) is connected to the main water supply pipe, and the main water supply pipe is connected to the water distributor a (5) through the first water supply branch pipe. The main water supply pipe is also connected with the spraying device (30) through the second water supply branch pipe. 6. The energy-saving air-conditioning unit according to claim 5, wherein the air filter (2) is a coarse-medium effect composite air filter; The secondary air inlet (23) is provided with a coarse-medium effect composite air filter; The layered packing unit is mainly composed of packing b (4) and packing a (3) arranged up and down, and an air flow channel is formed between packing b (4) and packing a (3). 7. The energy-saving air-conditioning unit according to claim 5, characterized in that, the water supply main pipe is provided with a water pump b (25), and the water pump b (25) is located in the water storage tank a (24), the The water pump b (25) is connected to the controller; the first water supply branch pipe is provided with a water filter b (26), and the second water supply branch pipe is respectively provided with a regulating valve (27), a water filter c (28) . 8. The energy-saving air-conditioning unit according to claim 3, wherein the plate-tube evaporative condensing mechanism includes a plate-tube evaporative condenser and a mechanical refrigeration system connected together; The plate-tube evaporative condenser includes an evaporative condensing plate tube (16), and the evaporative condensing plate tube (16) is sequentially connected with the four-way reversing valve (10), the compressor (9), and the evaporator- The condenser integrated mechanism (32) and the throttle valve (33) form a closed loop; the top of the evaporative condenser plate tube (16) is sequentially provided with a water distributor b (15) and a water retaining plate b (14), A water storage tank b (31) is arranged below the evaporative condensing plate tube (16), and an air duct is formed between the evaporative condensing plate tube (16) and the water storage tank b (31). A condensation exhaust air inlet (11) is provided on the side wall of the casing of the unit, and the water storage tank b (31) is connected to the water distributor b (15) through a water storage pipe. 9. The energy-saving air-conditioning unit according to claim 8, characterized in that, the water storage pipe is respectively provided with a water filter a (17) and a water pump a (18), and the water pump a (18) and the controller connect. 10. The energy-saving air-conditioning unit according to claim 8, characterized in that a coarse-medium-efficiency composite air filter is arranged in the condensing exhaust air inlet (11).