CN207132487U - A kind of recovery type evaporative cooling air conditioning unit using air through tunnel - Google Patents

Abstract

The utility model discloses a heat-recovery evaporative cooling air-conditioning unit utilizing tunnel wind, which includes a buried underground tunnel, air inlets and air outlets are respectively arranged at both ends of the tunnel, and a heat-recovery evaporative cooling unit is also arranged on the upper part of the tunnel; The heat recovery evaporative cooling unit includes a shell, which is divided into a first working area and a second working area from top to bottom. As a node, reverse cross-flow exhaust channels and air supply channels are formed in the first working area and the second working area. The utility model air conditioner unit makes full use of the tunnel to precool the fresh air in summer and preheats it in winter, and undertakes part of the cooling and heating load, and uses the heat recovery type evaporative cooling unit to humidify and cool the return air before exchanging heat with the fresh air to increase the energy of the return air The availability rate is high, the energy saving effect is remarkable, and the operation reliability is high, which has very good practical value.

Description

A heat recovery evaporative cooling air conditioning unit using tunnel wind

technical field

The utility model belongs to the technical field of air conditioning equipment, in particular to a heat recovery type evaporative cooling air conditioning unit utilizing tunnel wind.

Background technique

Nowadays, with the rapid urbanization in my country, the area where air-conditioning is used has increased dramatically, resulting in high energy consumption of air-conditioning systems. As the country continues to strengthen the application of renewable energy and energy conservation and emission reduction, giving priority to the use of natural cold sources, renewable energy and the application of heat recovery technology has become a priority energy-saving method.

As we all know, the year-round temperature fluctuations in the depths of the formation are small, and there is a large temperature difference between winter and summer and the ground air temperature, so tunnel ventilation is a ventilation and energy-saving measure that uses tunnels to precool fresh air in summer and preheat fresh air in winter; in dry areas The difference between the dry bulb temperature and the wet bulb temperature of the outdoor air is large, which contains rich dry air energy. It is directly introduced into the room to bear the indoor humidity load, and the direct evaporative cooling technology is used to achieve humidification and cooling. After treatment, it is introduced into the room to bear the indoor cooling load. Heat recovery technology The energy in the exhaust air can be recovered effectively, and the waste of energy is avoided.

Utility model content

The purpose of the utility model is to provide a heat recovery type evaporative cooling air-conditioning unit utilizing tunnel wind, which solves the serious energy waste problem of the existing air-conditioning units.

The technical scheme adopted by the utility model is a heat recovery type evaporative cooling air-conditioning unit utilizing tunnel wind, including a tunnel buried underground, air inlets and outlets are respectively arranged at both ends of the tunnel, and heat recovery is also arranged on the upper part of the tunnel. type evaporative cooling unit.

The utility model is also characterized in that,

The heat recovery evaporative cooling unit includes a shell, which is divided into a first working area and a second working area from top to bottom. As a node, reverse cross-flow exhaust channels and air supply channels are formed in the first working area and the second working area.

The heat recovery device is specifically a plate-fin heat recovery device.

In the air supply channel, there is a fresh air outlet on the side wall of the shell, and the fresh air filter, heat recovery device, direct evaporative cooler on the air supply side, secondary processing unit, blower fan and air supply outlet are arranged in the fresh air outlet in sequence according to the flow direction of the air The fresh air outlet and the fresh air filter are located in the first working area; the direct evaporative cooler on the air supply side, the secondary processing unit, the blower and the air supply outlet are all located in the second working area.

A fresh air valve is arranged in the fresh air port; an air supply valve is arranged in the air supply port.

The secondary processing unit is specifically any one of a surface cooler or a hot water heater.

The exhaust air channel is located at the air return port on the side wall of the shell, and the air return port is provided with an exhaust filter, a direct evaporative cooler on the return air side, a heat recovery device, an exhaust fan, and an air exhaust port in sequence according to the air flow direction; the exhaust fan and the exhaust air The air outlet is located in the second working area; the return air outlet, the exhaust air filter and the direct evaporative cooler on the return air side are all located in the first working area.

A return air valve is arranged in the air return port; an exhaust valve is arranged in the air exhaust port.

The beneficial effects of the utility model air-conditioning unit are:

a) The air conditioner unit of this utility model makes full use of the natural cold source and heat source, uses the tunnel wind to precool the outdoor fresh air in summer, and uses the tunnel wind to preheat the outdoor fresh air in winter, and then sends it into the air conditioner after being treated as the incoming air of the heat recovery type evaporative cooling air conditioner unit area, which effectively bears part of the cooling and heating loads and reduces air-conditioning energy consumption;

b) The air conditioning unit of this utility model uses the heat recovery technology rationally, and the fresh air that has been pre-cooled/preheated by the tunnel air passes through the plate-fin heat recovery device to recover the cold/heat in the exhaust air, especially when the cold is recovered in summer, The indoor exhaust air is humidified and cooled by the direct evaporative cooler, which not only increases the availability of energy in the exhaust air, but also has low investment and operating costs;

c) The air-conditioning unit of this utility model utilizes the direct evaporative cooling technology scientifically, rationally and flexibly. Exchanging heat with the fresh air, and finally recovering the energy in the exhaust air and sending it to the air-conditioning area, and the exhaust air is discharged outside;

d) The surface cooling section/heating section of the air-conditioning unit of the utility model adopts an external cooling type, and the surface cooler/heater only needs to be fed with cold water/hot water, which can not only match with different cold and heat source systems, such as conventional cold water Units, air source heat pumps, ground source heat pumps, water source heat pumps, etc., and broaden the application range, and realize energy complementarity.

Description of drawings

Fig. 1 is a structural schematic diagram of a heat recovery evaporative cooling air-conditioning unit utilizing tunnel wind according to the present invention.

In the figure, 1. Air inlet, 2. Tunnel, 3. Air outlet, 4. Fresh air valve, 5. Fresh air outlet, 6. Fresh air filter, 7. Heat recovery device, 8. Direct evaporative cooler on the air supply side, 9 .Secondary processing unit, 10. Blower fan, 11. Air supply valve, 12. Air supply outlet, 13. Return air valve, 14. Return air outlet, 15. Exhaust air filter, 16. Direct evaporative cooler on the return air side, 17 .Exhaust fan, 18. Exhaust outlet, 19. Exhaust valve, 20. Shell, 21. Air supply channel, 22. Exhaust channel, 23. First working area, 24. Second working area.

Detailed ways

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

The utility model is a heat-recovery evaporative cooling air-conditioning unit using tunnel wind, as shown in Figure 1, including a tunnel 2 buried underground, two ends of the tunnel 2 are respectively provided with an air inlet 1 and an air outlet 3, and the upper part of the tunnel 2 is also A heat recovery type evaporative cooling unit is provided.

The heat recovery evaporative cooling unit includes a housing 20, which is divided into a first working area 23 and a second working area 24 from top to bottom in turn, and a heat is provided at the junction of the first working area 23 and the second working area 24 The recoverer 7, with the heat recoverer 7 as a node, forms a reverse cross-flow exhaust passage 22 and an air supply passage 21 in the first working area 23 and the second working area 24, and the exhaust air passage 22 and the air supply passage 21 The air in the heat exchanger 7 carries out heat exchange.

The heat recovery device 7 is specifically a plate-fin heat recovery device.

In the air supply passage 21, a fresh air outlet 5 is arranged on the side wall of the housing 20, and a fresh air filter 6, a heat recovery device 7, a direct evaporative cooler 8 on the air supply side, and two Secondary processing unit 9, air blower 10 and air supply port 12; fresh air port 5 and fresh air filter 6 are located in the first working area 23; air supply side direct evaporative cooler 8, secondary processing unit 9, blower 10 and air supply port 12 are located in Second work area 24 .

A fresh air valve 4 is provided in the fresh air port 5 ; an air supply valve 11 is provided in the air supply port 12 .

The secondary processing unit 9 is specifically any one of a surface cooler or a hot water heater. In winter or when heating is required, the secondary processing unit 9 is a hot water heater. In summer or when cooling is required, the secondary processing unit 9 For the surface cooler.

The air exhaust channel 22 is located at the air return port 14 on the side wall of the housing 20, and the air return port 14 is sequentially provided with an exhaust filter 15, a direct evaporative cooler 16 on the return air side, a heat recovery device 7, an exhaust fan 17 and The exhaust outlet 18 ; the exhaust fan 17 and the exhaust outlet 18 are located in the second working area 24 ; the return air outlet 14 , the exhaust filter 15 and the direct evaporative cooler 16 on the return air side are all located in the first working area 23 .

A return air valve 13 is arranged in the air return port 14 ; an air exhaust valve 19 is arranged in the air exhaust port 18 .

The working process of the utility model air-conditioning unit:

When it is summer or the room needs to be cooled, the outdoor fresh air enters the tunnel 2 from the air inlet 1 for pre-cooling, realizing the equal humidity cooling air treatment process, and then enters the heat recovery evaporative cooling unit shell 20 through the air outlet 3 for further processing , wherein the fresh air precooled by the tunnel 2 enters the air supply channel 21 through the fresh air outlet 5, and first passes through the fresh air valve 4 and the fresh air filter 6 located in the first working area 23 along the air flow direction to filter the fresh air to ensure air quality and heat exchange efficiency, then enter the heat recovery device 7 for indirect heat exchange with the return air, realize equal wet cooling and recover the cooling capacity in the return air, and finally pass through the direct evaporative cooler 8 on the air supply side located in the second working area 24 , the surface cooler in the secondary processing unit 9, the air supply valve 11 and the air supply port 12 are sent into the room, wherein the return air carried out indirect heat exchange in the heat recovery device 7 is discharged through the exhaust fan 17 and the air exhaust port 18;

When it is winter or when heating is required, the outdoor fresh air enters the tunnel 2 from the air inlet 1 for preheating to realize the equal humidity heating air treatment process, and then enters the heat recovery evaporative cooling unit shell 20 through the air outlet 3 for further processing, wherein The fresh air pre-cooled by the tunnel 2 enters the air supply channel 21 through the fresh air outlet 5, and first passes through the fresh air valve 4 and the fresh air filter 6 located in the first working area 23 along the air flow direction to filter the fresh air to ensure air quality and replacement. thermal efficiency, and then enters the heat recovery device 7 for indirect heat exchange with the return air to realize the recovery of heat in the return air during the wet heating air treatment process, and finally the fresh air after heat recovery enters the secondary treatment in the second working area 24 The hot water heater of unit 9, the air supply valve 11 and the air supply port 12 are sent into the room. This air treatment process is powered by the blower fan 10, and the return air after the recovered heat is discharged through the air exhaust valve 19 and the air exhaust port 18. Outdoors, this air treatment process is powered by exhaust fan 17;

There is no need for cooling and heating in the transitional season, just filter the pre-cooled fresh air from Tunnel 2 and send it directly to the room.

The air-conditioning unit of the utility model makes full use of the natural cooling source, that is, the tunnel 2 pairs of fresh air are pre-cooled in summer and pre-heated in winter, to bear a part of the cooling and heating load, and use the heat recovery type evaporative cooling unit to further humidify and cool the return air before being combined with The fresh air heat exchange improves the utilization rate of the return air energy, the energy saving effect of the whole unit is remarkable, and the system operation reliability is high, which has broad application prospects.

Claims (6)

1. A heat recovery type evaporative cooling air-conditioning unit utilizing tunnel wind, characterized in that it comprises a tunnel (2) buried underground, and the two ends of the tunnel (2) are respectively provided with an air inlet (1) and an air outlet (3) , the upper part of the tunnel (2) is also provided with a heat recovery type evaporative cooling unit; The heat recovery type evaporative cooling unit includes a housing (20), and the housing (20) is divided into a first working area (23) and a second working area (24) from top to bottom, the first working area (23) and the second working area (24). A heat recovery device (7) is provided at the junction of the second working area (24), and with the heat recovery device (7) as a node, a reverse cross-flow type is formed in the first working area (23) and the second working area (24). Exhaust air channel (22) and air supply channel (21); In the air supply passage (21), a fresh air outlet (5) is arranged on the side wall of the casing (20), and a fresh air filter (6), a heat recovery filter (6) and a heat recovery unit are sequentially arranged in the fresh air outlet (5) according to the flow direction of the air. device (7), air supply side direct evaporative cooler (8), secondary processing unit (9), blower fan (10) and air supply port (12); said fresh air port (5) and fresh air filter (6) Located in the first working area (23); the direct evaporative cooler (8) on the air supply side, the secondary processing unit (9), the blower (10) and the air supply port (12) are all located in the second working area (24) . 2. A heat recovery type evaporative cooling air conditioner unit utilizing tunnel wind according to claim 1, characterized in that the heat recovery device (7) is specifically a plate-fin heat recovery device. 3. A heat recovery type evaporative cooling air conditioner unit utilizing tunnel wind according to claim 1, characterized in that, a fresh air valve (4) is arranged in the described fresh air port (5); the described air supply port ( 12) An air supply valve (11) is arranged inside. 4. A heat recovery evaporative cooling air-conditioning unit utilizing tunnel wind according to claim 1, characterized in that, the secondary processing unit (9) is specifically any one of a surface cooler or a hot water heater kind. 5. A heat-recovery evaporative cooling air-conditioning unit utilizing tunnel wind according to claim 1, characterized in that the exhaust channel (22) is located at the air return port (14) on the side wall of the casing (20) , the return air outlet (14) is provided with an exhaust filter (15), a direct evaporative cooler (16) on the return air side, a heat recovery device (7), an exhaust fan (17) and an air outlet ( 18); the exhaust fan (17) and the air outlet (18) are located in the second working area (24); the air return port (14), the air exhaust filter (15) and the air return side are directly evaporatively cooled Devices (16) are all located in the first working area (23). 6. A heat-recovery evaporative cooling air-conditioning unit utilizing tunnel wind according to claim 5, characterized in that a return air valve (13) is arranged in the air return port (14); the air exhaust port (18 ) is provided with an exhaust valve (19).