CN107990459A - A kind of Evaporative Cooling Air-conditioning System of Arid Area rural household - Google Patents

Abstract

The invention discloses an evaporative cooling air-conditioning system for rural households in dry areas, which includes a tunnel air unit connected to an air-conditioning system casing, in which an indirect evaporative cooling unit, a direct Evaporative cooling unit and supply air unit. The evaporative cooling air-conditioning system of the present invention solves the problem in the prior art that the split-type air conditioner lowers the temperature and also reduces the indoor humidity and is not suitable for dry areas.

Description

An evaporative cooling air-conditioning system for rural households in dry areas

technical field

The invention belongs to the technical field of air-conditioning equipment, and relates to an evaporative cooling air-conditioning system for rural households in dry areas.

Background technique

At present, my country's rural economic foundation is relatively weak, especially in dry areas. It has become a wish of rural families living in dry areas to use air conditioners in hot summer. However, traditional split air conditioners are not suitable for these families. On the one hand, the initial investment and operation costs of traditional split air conditioners are expensive, and rural families in these dry areas cannot afford the high cost; Air conditioners also reduce indoor humidity while cooling down, which does not meet the requirements for proper humidification in dry areas. Therefore, air-conditioning products that can meet the needs of cooling in hot summer without reducing humidity, and that ordinary rural families in dry areas have the ability to consume are urgently needed in rural areas in dry areas in my country.

Evaporative cooling ventilation and air-conditioning technology is an energy-saving, low-carbon, environmentally friendly, economical, healthy and green air-conditioning technology. Its initial investment and operating costs are unmatched by traditional split-type air conditioners, and its initial investment and operating costs are also ordinary rural households. It is affordable, and the direct evaporative cooling technology can not only cool down, but also moderately humidify. Therefore, household evaporative cooling air conditioners have broad application prospects in rural areas in dry areas.

Contents of the invention

The purpose of the present invention is to provide an evaporative cooling air-conditioning system for rural households in dry areas, which solves the problem that the split-type air conditioners in the prior art reduce the indoor humidity while cooling down, and are not suitable for dry areas.

The technical solution adopted in the present invention is an evaporative cooling air-conditioning system for rural households in dry areas, which includes a tunnel air unit connected to an air-conditioning system housing, and the air-conditioning system housing is sequentially provided with indirect Evaporative cooling units, direct evaporative cooling units and supply air units.

The present invention is also characterized in that,

An air equalizing plate is also arranged between the indirect evaporative cooling unit and the direct evaporative cooling unit, and a water baffle is also arranged between the direct evaporative cooling unit and the air supply unit.

The tunnel air unit includes an air inlet arranged above the ground, and the air inlet is connected with a tunnel buried in the soil, and the tunnel is connected to the air-conditioning system casing through a reducing pipe a.

An air valve is arranged in the reducing pipe a.

The indirect evaporative cooling unit includes a dew point indirect evaporative cooler, a coarse-effect filter is set between the dew point indirect evaporative cooler and the air inlet side of the air-conditioning system shell, a water distributor is set above the dew point indirect evaporative cooler, and the air conditioner above the water distributor The top of the system shell is provided with a secondary air outlet, and a secondary air valve is installed at the secondary air outlet. A circulating water tank a is installed under the dew point indirect evaporative cooler. The water distributor and circulating water tank a are connected through the water supply pipe a, and the water supply A water pump a is also arranged on the pipe a.

The circulating water tank a is also connected with a water supply pipe, and the water supply pipe is provided with a valve a.

The direct evaporative cooling unit includes a circulating water tank b arranged at the bottom of the air-conditioning system casing and two vertical water spray pipes arranged symmetrically in the middle of the air-conditioning system casing. The nozzle, the water spray pipe and the circulating water tank b are connected through the water supply pipe b, and the water supply pipe b is also provided with a water pump b.

The circulating water tank b is also connected with a water supply pipe and a drain pipe, the drain pipe is provided with a valve b, the water supply pipe leads into the circulating water tank b and is provided with a float valve at one end thereof located in the circulating water tank b.

The air supply unit includes an axial flow fan arranged on the side wall of the air-conditioning system housing. There is a primary air outlet on the top of the air-conditioning system housing. The primary air outlet is connected to a variable-diameter pipe b, and a primary damper.

The evaporative cooling air-conditioning system also includes an inspection unit, the inspection unit includes a waterproof lighting lamp arranged on the top of the air-conditioning system casing above the direct evaporative cooling unit, and an inspection door arranged on the side of the air-conditioning system casing of the direct evaporative cooling unit.

The beneficial effects of the present invention are:

(1) Applying evaporative cooling technology to ordinary rural families in dry areas can not only give full play to the advantages of evaporative cooling technology, but also meet the summer cooling needs of rural families in dry areas;

(2) The combination of tunnel wind system and evaporative cooling is applied to rural areas in dry areas, which can make full use of the advantages of sparsely populated rural areas, and the tunnel wind system can replace the indirect section of the traditional two-stage evaporative cooling system, Can make full use of natural resources, and the soil can provide a relatively stable temperature to pre-cool the outdoor air;

(3) The use of dew-point indirect evaporative coolers in rural households in dry areas improves the utilization of outdoor "dry air energy" by the air-conditioning system, because dew-point indirect evaporative coolers can reduce the temperature of outdoor air to below the wet bulb temperature, Approaching the dew point temperature, which is what we call "sub-humid bulb temperature";

(4) The direct evaporative cooling unit is used in ordinary rural households in dry areas, which can not only cool the outdoor air, but also supplement the necessary humidity indoors;

(5) The air-conditioning system of the present invention is flexible to use, and different functional sections can be opened according to different seasons to meet the requirements of indoor personnel: in transitional seasons, the needs of indoor personnel for comfort can be met only by the tunnel wind system; In early summer, only turning on the direct evaporative cooling unit can meet the comfort requirements of indoor occupants; at the turn of summer and autumn, due to the high outdoor temperature, the dew point indirect evaporative cooler and the water spray pipe of the direct evaporative cooling unit work together.

Description of drawings

Fig. 1 is the structural representation of evaporative cooling air-conditioning system of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the housing in the evaporative cooling air conditioning system of the present invention.

In the figure, 1. Air inlet, 2. Soil, 3. Tunnel, 4. Reducer pipe a, 5. Air valve, 6. Coarse effect filter, 7. Dew point indirect evaporative cooler, 8. Secondary air valve, 9. Water distributor, 10. Evening plate, 11. Nozzle, 12. Waterproof lighting, 13. Inspection door, 14. Water baffle, 15. Reducer pipe b, 16. Primary air valve, 17. Axial flow Fan, 18. water supply pipe b, 19. water pump b, 20. drainage pipe, 21. valve b, 22. circulating water tank b, 23. float valve, 24 water pump a, 25. water supply pipe a, 26 circulating water tank a, 27 . Valve a, 28. Water supply pipe.

Detailed ways

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

The evaporative cooling air-conditioning system of the present invention, as shown in Figure 1, includes a tunnel air unit, the tunnel air unit is connected with the air-conditioning system casing, and the air-conditioning system casing is sequentially provided with an indirect evaporative cooling unit, a direct evaporative cooling unit, and a direct evaporative cooling unit according to the air flow direction. unit and air supply unit.

An air equalizing plate 10 is also arranged between the indirect evaporative cooling unit and the direct evaporative cooling unit, and a water baffle 14 is also arranged between the direct evaporative cooling unit and the air supply unit.

The tunnel air unit includes an air inlet 1 arranged above the ground, and the air inlet 1 is connected to a tunnel 3 embedded in the soil 2, and the tunnel 3 is connected to the air-conditioning system housing through a reducing pipe a4.

A damper 5 is arranged inside the reducing pipe a4.

As shown in Figure 2, the indirect evaporative cooling unit includes a dew-point indirect evaporative cooler 7, a coarse-effect filter 6 is arranged between the dew-point indirect evaporative cooler 7 and the air inlet side of the air-conditioning system shell, and a dew-point indirect evaporative cooler 7 is arranged above There is a water distributor 9, the top of the air-conditioning system housing above the water distributor 9 is provided with a secondary air outlet, and a secondary air valve 8 is installed at the secondary air outlet, and a circulating water tank a26 is provided under the dew point indirect evaporative cooler 7, The water distributor 9 and the circulating water tank a26 are connected through a water supply pipe a25, and a water pump a24 is also arranged on the water supply pipe a25.

The circulating water tank a26 is also connected with a water supply pipe 28, and the water supply pipe 28 is provided with a valve a27.

The direct evaporative cooling unit includes a circulating water tank b22 arranged at the bottom of the air-conditioning system casing and two vertical water spray pipes symmetrically arranged in the middle of the interior of the air-conditioning system casing. The nozzle 11, the water spray pipe and the circulating water tank b22 are connected through a water supply pipe b18, and a water pump b19 is also arranged on the water supply pipe b18.

The circulating water tank b22 is also connected with a water supply pipe 28 and a drain pipe 20, the drain pipe 20 is provided with a valve b21, and the water supply pipe 28 leads to the circulating water tank b22 and is provided with a float valve 23 at one end thereof located in the circulating water tank b22.

The air supply unit includes an axial flow fan 17 arranged on the side wall of the air-conditioning system housing. The top of the air-conditioning system housing is provided with a primary air outlet. The primary air outlet is connected to a variable-diameter pipe b15, and a primary Damper 16.

The evaporative cooling air-conditioning system also includes an inspection unit, which includes a waterproof lighting lamp 12 arranged on the top of the air-conditioning system casing above the direct evaporative cooling unit, and an inspection door 13 arranged on the side of the air-conditioning system casing of the direct evaporative cooling unit.

The working process of the evaporative cooling air-conditioning system of the present invention is as follows:

(1) Workflow of tunnel wind unit

The air with a higher outdoor temperature enters the tunnel 3 through the air inlet 1, and the air entering the tunnel 3 is precooled by the soil 2 with a lower temperature.

(2) Workflow of indirect evaporative cooling unit

The circulating water in the circulating water tank a26 supplies water to the water distributor 9 through the water pump a24 and the water supply pipe a25, and the water distributor 9 sprays downwards to the dew point indirect evaporative cooler 7, and the air pre-cooled by the tunnel air unit enters the dew point for indirect evaporation The cooler 7 performs cooling.

(3) Workflow of direct evaporative cooling unit

The circulating water in the circulating water tank b22 passes through the water pump b19 and supplies water to the nozzle 11 through the water supply pipe b18. The air cooled by the indirect evaporative cooling unit passes through the air uniform plate 10, and then exchanges heat and moisture with the water atomized by the nozzle, so that the air temperature Further decrease, humidity increases appropriately.

(4) Workflow of air supply unit

After the air cooled by the direct evaporative cooling unit passes through the water baffle 14 to block the small water droplets in the air, the air enters the air supply unit and is sent into the room by the axial flow fan 17, and the water droplets blocked by the water baffle 14 move along the The panels of the plate 14 flow down back into the circulating water tank b22.

(5) Workflow of supply and drainage unit

When the circulating water tank a26 in the indirect evaporative cooling unit needs to replenish water, open the valve a27 to replenish water through the water supply pipe 28; 23 is opened to replenish water through the water supply pipe 28, and when the circulating water tank b22 needs to discharge sewage, open the valve b21 to discharge sewage through the drain pipe 20.

(6) Maintenance unit workflow

When the equipment in the direct evaporative cooling unit breaks down and needs to be overhauled, the waterproof lighting lamp 12 is turned on, and the direct evaporative cooling unit can be overhauled by entering the direct evaporative cooling unit through the maintenance door 13.

Claims (10)

1. An evaporative cooling air-conditioning system for rural households in dry areas, characterized in that it includes a tunnel air unit connected to an air-conditioning system housing, and the air-conditioning system housing is sequentially arranged according to the direction of air flow Indirect evaporative cooling units, direct evaporative cooling units and supply air units. 2. The evaporative cooling air-conditioning system according to claim 1, characterized in that, an air equalizing plate (10) is also arranged between the indirect evaporative cooling unit and the direct evaporative cooling unit, and the direct evaporative cooling unit and the air supply Water baffles (14) are also arranged between the units. 3. The evaporative cooling air-conditioning system according to claim 1 or 2, characterized in that, the tunnel air unit includes an air inlet (1) arranged above the ground, and the air inlet (1) is connected with a The tunnel (3) in (2), the tunnel (3) is connected to the housing of the air-conditioning system through a reducing pipe a (4). 4. The evaporative cooling air-conditioning system according to claim 3, characterized in that a damper (5) is arranged in the reducing pipe a (4). 5. The evaporative cooling air-conditioning system according to claim 1 or 2, characterized in that, the indirect evaporative cooling unit comprises a dew-point indirect evaporative cooler (7), and the dew-point indirect evaporative cooler (7) is connected with the air-conditioning system shell A coarse-effect filter (6) is arranged between the air inlet side of the body, a water distributor (9) is arranged above the dew point indirect evaporative cooler (7), and a water distributor (9) is arranged above the water distributor (9). The top is provided with a secondary air outlet, a secondary air valve (8) is installed at the secondary air outlet, a circulating water tank a (26) is provided below the dew point indirect evaporative cooler (7), and the water distributor (9) is connected with the circulating water tank a (26) through the water supply pipe a (25), and the water supply pipe a (25) is also provided with a water pump a (24). 6. The evaporative cooling air-conditioning system according to claim 5, characterized in that, the circulating water tank a (26) is also connected with a water supply pipe (28), and the water supply pipe (28) is provided with a valve a (27 ). 7. The evaporative cooling air-conditioning system according to claim 1 or 2, characterized in that the direct evaporative cooling unit includes a circulating water tank b (22) arranged at the bottom of the air-conditioning system housing and symmetrically arranged in the middle of the air-conditioning system housing Two vertical water spray pipes, the water spray pipes are evenly distributed with a plurality of relative spray nozzles (11), and the water spray pipes are connected with the circulating water tank b (22) through the water supply pipe b (18), so A water pump b (19) is also provided on the water supply pipe b (18). 8. The evaporative cooling air-conditioning system according to claim 7, characterized in that, the circulating water tank b (22) is also connected with a water supply pipe (28) and a drain pipe (20), and on the drain pipe (20) A valve b (21) is provided, and the water supply pipe (28) leads into the circulating water tank b (22) and is provided with a float valve (23) at one end thereof located in the circulating water tank b (22). 9. The evaporative cooling air-conditioning system according to claim 1 or 2, characterized in that, the air supply unit comprises an axial flow fan (17) arranged on the side wall of the air-conditioning system housing, and the top of the air-conditioning system housing is opened There is a primary air outlet, and a reducing pipe b (15) is connected to the primary air outlet, and a primary air valve (16) is also arranged in the reducing pipe b (15). 10. The evaporative cooling air-conditioning system according to claim 1 or 2, characterized in that the evaporative cooling air-conditioning system further comprises an inspection unit, and the inspection unit includes a waterproof lighting set on the top of the air-conditioning system housing directly above the evaporative cooling unit Lights (12), and an access door (13) provided on the side of the air conditioning system housing of the direct evaporative cooling unit.