CN210089065U - Heat pipe type fresh air ventilator with composite evaporative cooling and spraying technology - Google Patents

Abstract

The utility model discloses a heat pipe type fresh air ventilator combining evaporative cooling and spraying technologies, which comprises a shell, wherein the shell comprises a return air channel and an air supply channel which are distributed in a cross shape; the air supply channel comprises an air inlet and an air supply outlet which are arranged on two corresponding sides of the shell, and a first filter, a heat exchanger, a heat exchange core and an air feeder are sequentially arranged in the air inlet according to the air flowing direction; the air return channel comprises an air return port and an air outlet which are arranged on two corresponding sides of the shell, and a second filter, a direct evaporative cooling unit, a heat exchange core, a dripping type water distribution device, a heat exchanger and an exhaust fan are sequentially arranged in the air return port according to the air return flowing direction. The utility model discloses heat pipe formula fresh air ventilator combines together evaporative cooling, heat pipe exchanger and fresh air ventilator, makes it have ventilation, and the cooling in summer, three kinds of functions of heat recovery in winter reach energy-conserving effect, have fine practical value.

Description

Heat pipe type fresh air ventilator with combined evaporative cooling and spray technology

technical field

The utility model belongs to the technical field of air-conditioning equipment, in particular to a heat pipe type fresh air ventilator with combined evaporative cooling and spray technology.

Background technique

Harmful substances released from construction, decoration, furniture and office equipment are an important cause of indoor pollution. Coupled with poor indoor ventilation, harmful gases cannot be released and replaced, and they accumulate continuously, and their concentrations continue to increase, resulting in deterioration of indoor air quality. This results in a drop in work efficiency. Therefore, people pay more and more attention to the fresh air system, and the fresh air ventilator has also been widely used, but the traditional fresh air ventilator can only control the ventilation flow according to the needs of the room, discharge the indoor dirty air, and at the same time exhaust the outdoor air. Fresh air is input into the room, although it can solve the problem of indoor ventilation, but it cannot control the indoor temperature.

Utility model content

The purpose of the utility model is to provide a heat pipe type fresh air ventilator with combined evaporative cooling and spray technology, which solves the problem that the existing fresh air ventilator can only ventilate air and cannot adjust the indoor temperature.

The technical scheme adopted by the utility model is that a heat pipe type fresh air ventilator with combined evaporative cooling and spray technology comprises a casing, and the casing includes return air passages and air supply passages distributed in a cross shape;

The air supply channel includes air inlets and air supply openings on the two sides of the casing, and the air inlets are sequentially provided with a first filter, a heat exchanger, a heat exchange core and a blower according to the air flow direction;

The return air channel includes return air openings and air exhaust openings on both sides of the shell, and the return air openings are sequentially provided with a second filter, a direct evaporative cooling unit, a heat exchange core, a drip-type water distribution device, and a second filter according to the return air flow direction. heat exchangers and exhaust fans;

The direct evaporative cooling unit includes filler, the top of the filler is provided with a water distributor that sprays downward, and the bottom of the filler is provided with a circulating water tank, and the water distributor and the circulating water tank are connected by a water distribution pipe;

The heat exchanger includes a shell, and a number of heat pipes are arranged in the vertical direction inside the shell; a partition plate is also arranged in the shell, and the partition plate divides the heat pipes into the hot end of the heat pipe and the cold end of the heat pipe from top to bottom;

The cold end of the heat pipe is located in the air supply channel; the hot end of the heat pipe is located in the return air channel.

The utility model is also characterized in that,

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

The drip-type water distribution device includes a water pipe, and a plurality of nozzles for spraying toward the heat exchanger are evenly distributed on the water pipe.

A plurality of through holes are evenly distributed on the shell side wall corresponding to the hot end of the heat pipe, and a dropper is connected to any through hole near the top of the shell.

The through holes are located on the side close to the drip-type water distribution device.

Each heat pipe includes a heat pipe shell, and a liquid absorbing core is attached to the inner wall of the heat pipe shell.

The bottom of each heat pipe is sealed with an end cap.

The beneficial effects of the present utility model are:

(1) The heat pipe type fresh air ventilator of the present utility model combines the fresh air ventilator with the heat pipe heat exchanger and the evaporative cooling unit. The indoor exhaust air is cooled, and then the fresh air is subjected to second-level wet cooling through the heat exchange core. In winter, the direct evaporative cooling unit is closed, and the indoor exhaust air is used to preheat the outdoor fresh air. Three functions of recycling;

(2) The circulating water pump in the heat pipe type fresh air ventilator of the present utility model continuously supplies spray circulating water for the filler of the direct evaporative cooling unit, so that the filler can not only realize the equal-humidity cooling treatment of the indoor return air, but also filter the return air. dust, to protect the heat exchange core and heat pipe heat exchanger from dust;

(3) The hot end of the heat exchanger in the heat pipe type fresh air ventilator of the present utility model adopts a drip type water distribution device. The outer shell of the hot end of the heat pipe of the heat pipe heat exchanger is provided with a plurality of through holes, and the upper part of the through hole is provided with a drip type water distribution device. It can make the water droplets flowing from the drip tube flow evenly and disperse through the through holes, and evenly arrange it on the surface of the heat exchanger at the hot end of the heat pipe, which improves the evaporative cooling efficiency and saves water at the same time. Compared with the type heat pipe heat exchanger, the efficiency is greatly improved;

(4) The heat exchanger in the heat pipe type fresh air ventilator of the present utility model adopts a horizontal liquid-absorbing core structure. In the heat pipe shell, a liquid-absorbing core is arranged through the evaporation section and the condensation section, so that the working fluid depends on the capillary force. The function completes the cycle in the evaporation section and the condensation section, saving energy.

Description of drawings

Fig. 1 is the structural representation of the heat pipe type fresh air ventilator of the composite evaporative cooling and spraying technology of the present utility model;

Fig. 2 is the structural representation of the heat exchanger in the heat pipe type fresh air ventilator of the present invention;

3 is a cross-sectional view of the heat pipe in the heat pipe type fresh air ventilator of the present invention.

In the figure, 1. The first filter, 2. The cold end of the heat pipe, 3. The heat exchange core, 4. The circulating water pump, 5. The packing, 6. The second filter, 7. The blower, 8. The water pipe, 9. The heat pipe Hot end, 10. Exhaust fan, 11. Dropper, 12. Separator, 13. Through hole, 14. Shell, 15. Heat pipe shell, 16. Suction core, 17. End cap, 18. Shell, 19 .Air inlet, 20. Air supply port, 21. Heat exchanger, 22. Air return port, 23. Air outlet, 24. Water distributor, 25. Circulating water tank, 26. Water distribution pipe, 27. Nozzle, 28. Heat pipe.

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 heat pipe type fresh air ventilator with combined evaporative cooling and spray technology, as shown in FIG. 1 , comprising a casing 18, and the casing 18 includes return air passages and air supply passages distributed in a cross shape;

The air supply channel includes an air inlet 19 and an air supply port 20 on both sides of the casing 18. The air inlet 19 is provided with a first filter 1, a heat exchanger 21, a heat exchange core 3 and a blower 7 in sequence according to the air flow direction;

The return air passage includes return air openings 22 and air exhaust openings 23 on both sides of the casing 18 . The return air opening 22 is provided with a second filter 6 , a direct evaporative cooling unit, a heat exchange core 3 , and a drip outlet 22 in sequence according to the flow direction of the return air. A shower type water distribution device, a heat exchanger 21 and an exhaust fan 10 are provided.

The first filter 1 and the second filter 6 can filter dust in the air, and protect the hot and cold ends of the heat pipe 28 and the heat exchange core 3 from dust, so as to improve the heat exchange efficiency.

The blower 7 is to send the outdoor fresh air through the first filter 1, the cold end 2 of the heat pipe, and the heat exchange core 3, and the cooled air is sent into the room; the exhaust fan 10 is to pass the indoor air through the second filter 6, direct evaporative cooling The unit, the heat exchange core 3, the drip water distribution device, and the hot end 9 of the heat pipe pre-cool the outdoor fresh air, and the air that absorbs the heat of the hot end of the heat pipe is discharged to the outside.

The direct evaporative cooling unit includes a filler 5 . The top of the filler 5 is provided with a downward spraying water distributor 24 , and the bottom of the filler 5 is provided with a circulating water tank 25 . The water distributor 24 and the circulating water tank 25 are connected by a water distribution pipe 26 . The water distribution pipe 26 is provided with a circulating water pump 4 .

The direct evaporative cooling unit adopts the circulating water pump 4, which can continuously supply spray water to the filler 5 of the direct evaporative cooling unit, so as to realize the effect of constant enthalpy humidification and cooling.

The drip-type water distribution device includes a water pipe 8, and a plurality of nozzles 27 spraying toward the heat exchanger 21 are evenly distributed on the water pipe 8, and the water pipe 8 is connected to the tap water pipe.

The heat pipe 28 is a heat transfer element with high thermal conductivity. It realizes heat transfer through its internal heat transfer working medium and continuous cyclic phase change in a high vacuum closed shell. It has high thermal conductivity and good isothermal performance. The heat transfer area on both sides of the hot and cold can be changed arbitrarily, the heat transfer can be long-distance, and the temperature can be controlled. The heat pipe heat exchanger does not require external power to promote fluid circulation, which is safer and more reliable than conventional heat exchangers, and can operate continuously for a long time. The structure and location of the cold and hot sections are arranged flexibly. The heat pipe heat exchanger has high heat transfer efficiency and compact structure. The flow resistance is small and the energy saving effect is remarkable.

The heat exchanger 21 adopts a horizontal liquid absorbing core heat pipe heat exchanger. As shown in FIG. 2 , the heat exchanger 21 includes a casing 14, and a number of heat pipes 28 are arranged in the vertical direction in the casing 14; The partition 12, the partition 12 divides the numerous heat pipes 28 from top to bottom into the heat pipe hot end 9 and the heat pipe cold end 2;

The cold end 2 of the heat pipe is located in the air supply channel; the hot end 9 of the heat pipe is located in the return air channel.

A plurality of through holes 13 are evenly distributed on the side wall of the shell 14 corresponding to the heat pipe hot end 9, and a drip tube 11 is also connected to any through hole 13 near the top of the shell 14, and the drip tube 11 is connected with the tap water pipe. The through holes 13 are all located on the side close to the drip-type water distribution device.

The above structure plays the role of equalizing the flow, which can disperse the water droplets into fine water droplets with different particle sizes, and evenly arrange them on the surface of the heat pipe 28 at the hot end 9 of the heat pipe, so as to prevent the droplets from concentrating into a water flow, and at the same time increase the convective heat and mass transfer effect. . For the evaporative cooling process, water is distributed evenly at the hot end of the heat pipe 28, water consumption is saved, and it has a significant positive effect on enhancing the cooling efficiency and improving the system economy.

As shown in FIG. 3 , each heat pipe 28 includes a heat pipe shell 15 , and a liquid absorbing wick 16 is attached to the inner wall of the heat pipe shell 15 . The bottom of each heat pipe 28 is sealed by the end cap 17 .

The end of each heat pipe that absorbs heat from the heat flow is the evaporation section. The working fluid absorbs latent heat through the liquid wick 16, evaporates and vaporizes, flows to one end of the cold fluid, that is, the condensation section, exothermic liquefaction, and flows back to the evaporation section by capillary force, which is automatically completed. cycle. The evaporating section and the condensing section of the heat exchanger 21 can exchange functions according to the changes of different seasons in summer and winter, so as to meet the requirements of cold recovery in summer and heat recovery in winter.

The working process of the heat pipe type fresh air ventilator of the utility model is as follows:

The outdoor fresh air passes through the first filter 1 to filter the dust, and then passes through the cold end 2 of the heat pipe for the first-stage cooling treatment, and then passes through the heat exchange core 3 to exchange heat with the indoor return air that has been processed by the direct evaporative cooling unit for the second stage. stage cooling treatment, and then send the treated air into the room through the blower 7.

After the dust is filtered by the second filter 6, the indoor return air undergoes isoenthalpy cooling treatment in the direct evaporative cooling unit, and the heat exchange core exchanges heat with the fresh air. The water distribution device exchanges heat and mass with the hot end 9 of the heat pipe, absorbs the heat of the hot end of the heat pipe, and finally the exhaust fan discharges the air that has absorbed the heat to the outside.

The cold end 2 of the heat pipe and the hot end 9 of the heat pipe have opposite functions when running in winter and running in summer, so as to achieve the purpose of preheating the outdoor fresh air and achieving the purpose of heat recovery.

The heat pipe type fresh air ventilator of the utility model combines the evaporative cooling technology, the heat pipe heat exchanger and the fresh air ventilator, which can not only strengthen the indoor ventilation, but also utilize the energy of the indoor return air, pre-cool the outdoor fresh air, reduce Fresh air load, meet indoor comfort requirements with low energy consumption, energy saving and environmental protection.

Claims (7)

1. The heat pipe type fresh air ventilator of composite evaporative cooling and spraying technology is characterized in that, comprises shell (18), and the shell (18) comprises return air passages and air supply passages distributed in a cross shape; The air supply channel comprises air inlets (19) and air supply ports (20) on the two sides corresponding to the casing (18), and the air inlets (19) are sequentially provided with a first filter (1), a heat exchanger according to the air flow direction device (21), heat exchange core (3) and blower (7); The air return channel comprises air return ports (22) and air exhaust ports (23) on corresponding two sides of the casing (18), and the air return ports (22) are sequentially provided with second filters (6), a direct evaporative cooling unit, a heat exchange core (3), a drip-type water distribution device, a heat exchanger (21) and an exhaust fan (10); The direct evaporative cooling unit comprises a filler (5), the top of the filler (5) is provided with a water distributor (24) that sprays downwards, the bottom of the filler (5) is provided with a circulating water tank (25), and the water distributor (24) is connected with the circulating water tank (25) through the water distribution pipe (26); The heat exchanger (21) includes a casing (14), and a plurality of heat pipes (28) are arranged in the inner casing (14) in a vertical direction; ) divides the numerous heat pipes (28) into a heat pipe hot end (9) and a heat pipe cold end (2) from top to bottom; The cold end (2) of the heat pipe is located in the air supply channel; the hot end (9) of the heat pipe is located in the return air channel. 2 . The heat pipe type fresh air ventilator according to claim 1 , wherein a circulating water pump ( 4 ) is arranged on the water distribution pipe ( 26 ). 3 . 3. The heat pipe type fresh air ventilator according to claim 1, characterized in that the drip-type water distribution device comprises a water pipe (8), and the water pipe (8) is evenly distributed with a number of facing heat exchangers (21) Spray nozzle (27). 4. The heat-pipe type fresh air ventilator according to claim 1, characterized in that, a plurality of through holes (13) are evenly distributed on the side wall of the casing (14) corresponding to the hot end of the heat pipe (9), close to the casing (14) A dropper (11) is also connected to any through hole (13) at the top. 5 . The heat pipe type fresh air ventilator according to claim 4 , wherein the through holes ( 13 ) are all located on the side close to the drip-type water distribution device. 6 . 6. The heat pipe type fresh air ventilator according to claim 1, wherein each of the heat pipes (28) comprises a heat pipe shell (15), and the inner wall of the heat pipe shell (15) is attached with a liquid absorbing core ( 16). 7 . The heat pipe type fresh air ventilator according to claim 1 , wherein the bottom of each heat pipe ( 28 ) is sealed by an end cover ( 17 ). 8 .

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