CN205261805U - Evaporation formula condensing equipment based on separated heat pipe precooling - Google Patents

Abstract

The utility model discloses an evaporation formula condensing equipment based on separated heat pipe precooling, including the device casing, the lower part of a device casing lateral wall is provided with the air intake, is provided with the air exit on the roof of device casing, be provided with core cooling unit in the device casing, core cooling unit's top is provided with the breakwater, is provided with the exhaust fan between breakwater and the air exit. The utility model discloses an evaporation formula condensing equipment unites the unit with separated heat pipe heat exchanger and water distribution - refrigerant coil pipe and combines together, and the respective advantage of make full use of has strengthened the heat transfer effect for whole device has high efficiency and energy -conserving advantage.

Description

Evaporative condensation device based on separate heat pipe precooling

technical field

The utility model belongs to the technical field of air-conditioning equipment, in particular to an evaporative condensation device based on separate heat pipe precooling.

Background technique

The evaporative condenser is a highly efficient heat exchanger by spraying circulating water on its surface and using forced exhaust to promote the evaporation of surface water and take away the heat of condensation of the refrigerant. Because evaporative condenser has many advantages such as saving water and electricity, it is widely used.

The condensing section and the evaporating section of the separated heat pipe heat exchanger adopt a separate structure, and the condensing section and the evaporating section are connected by a steam conduit for steam and a condensate conduit for condensate. Using the evaporating section of the separated heat pipe to precool the inlet air of the evaporative condenser can effectively improve the heat exchange effect of the evaporative condenser, making the evaporative condenser more energy-saving and environmentally friendly.

Utility model content

The purpose of the utility model is to provide an evaporative condensing device based on separate heat pipe precooling, which solves the problem that the heat exchange efficiency of the existing evaporative condenser decreases when the outdoor air temperature is high.

The technical scheme adopted by the utility model is that the evaporative condensation device based on the separated heat pipe precooling includes a device casing, the lower part of the side wall of the device casing is provided with an air inlet, and the top wall of the device casing is provided with Air exhaust port; a core refrigeration unit is arranged in the device housing, a water baffle is arranged above the core refrigeration unit, and an exhaust fan is arranged between the water baffle and the air outlet.

The utility model is also characterized in that:

Air volume control valves are arranged in the air inlet and the air outlet.

A filter screen is arranged in the air inlet.

The core refrigeration unit includes a water distribution-refrigerant coil joint unit and a separate heat pipe heat exchanger; a water collection tank is installed under the water distribution-refrigerant coil joint unit and the separate heat pipe heat exchanger, and the water collection tank passes water supply The tubes are connected to the combined water distribution-refrigerant coil unit.

The separated heat pipe heat exchanger includes tube bundles in the evaporating section and tube bundles in the condensing section. The tube bundles in the evaporating section are connected to the tube bundles in the condensing section through steam conduits, and the tube bundles in the condensing section are connected to the tube bundles in the evaporating section through condensate conduits to form a closed loop; It is located between the water distribution-refrigerant coil unit and the water collection tank, and is set near the air inlet; the condensing section tube bundle is located between the water distribution-refrigerant coil unit and the water baffle, and the two ends of the condensing section tube bundle are The baffle is connected to the side wall of the device shell on the same side, and the tube bundle of the condensation section is connected with a non-condensable gas separation tube.

The combined water distribution-refrigerant coil unit is composed of a water distributor and a refrigerant coil set up and down.

The water distributor is composed of a water distribution pipe and a plurality of nozzles evenly arranged on the water distribution pipe and spraying towards the refrigerant coil. The water distribution pipe is connected with the water supply pipe, and a circulating water pump is arranged on the water supply pipe.

The coil inlet of the refrigerant coil is connected to the refrigerant inlet through a water inlet pipe, and the coil outlet of the refrigerant coil is connected to the refrigerant outlet through a water outlet pipe.

An exhaust valve is arranged on the non-condensable gas separation pipe.

The beneficial effects of the utility model are:

1. The evaporative condensing device of the present utility model adopts a separated heat pipe heat exchanger inside, and the condensing section and the evaporating section of the separated heat pipe heat exchanger adopt a separate structure; the tube bundle of the evaporating section can realize evaporation and heat absorption, and is used for The outdoor air is pre-cooled, while the tube bundle in the condensation section can condense and release heat, and finally the heat is taken away by the air.

2. The evaporative condensing device of the utility model uses the tube bundle of the evaporation section of the separated heat pipe heat exchanger to pre-cool the outdoor air, reduces the dry bulb temperature of the outdoor air, and strengthens the heat and moisture exchange between the air and the separated heat pipe heat exchanger , improving the heat transfer efficiency.

3. The evaporative condensing device of the present invention is provided with two baffles in the air exhaust direction to ensure that all the exhaust air passes through the tube bundle of the condensing section, and the condensing heat of the separated heat pipe heat exchanger is taken away to ensure the safety of the separated heat pipe heat exchanger. normal work.

Description of drawings

Fig. 1 is a structural schematic diagram of the evaporative condensation device of the present invention.

In the figure, 1. Air inlet, 2. Evaporator pipe bundle, 3. Refrigerant coil, 4. Nozzle, 5. Steam pipe, 6. Condensation pipe bundle, 7. Water collection tank, 8. Condensate pipe, 9. Circulation Water pump, 10. Baffle, 11. Exhaust valve, 12. Water baffle, 13. Exhaust fan, 14. Air outlet, 15. Refrigerant inlet, 16. Refrigerant outlet, 17. Water supply pipe, 18. No Condensed gas separation pipe, 19. Water distribution pipe.

detailed description

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

The utility model is based on an evaporative condensing device for pre-cooling with separate heat pipes. Its structure is shown in Figure 1. It includes a device shell. An air exhaust port 14 is provided; a core refrigeration unit is provided in the device housing, a water baffle 12 is provided above the core refrigeration unit, and an exhaust fan 13 is provided between the water baffle 12 and the air exhaust port 14 .

Both the air inlet 1 and the air outlet 14 are provided with an air volume control valve; the air inlet 1 is also provided with a filter screen.

The core refrigeration unit includes a water distribution-refrigerant coil joint unit and a separate heat pipe heat exchanger; a water collection tank 7 and a water collection tank 7 are arranged below the water distribution-refrigerant coil joint unit and the separate heat pipe heat exchanger It is connected with the water distribution-refrigerant coil combined unit through the water supply pipe 17.

The separated heat pipe heat exchanger includes tube bundles 2 in the evaporating section and tube bundles 6 in the condensing section. The tube bundle 2 in the evaporating section is connected to the tube bundle 6 in the condensing section through a steam conduit 5 , and the tube bundle 6 in the condensing section is connected to the tube bundle 2 in the evaporating section through a condensate conduit 8 . A closed circuit is formed; the tube bundle 2 of the evaporating section is located between the water distribution-refrigerant coil unit and the water collection tank 7, and is set near the air inlet 1; the condensing section tube bundle 6 is located between the water distribution-refrigerant coil unit and the damper Between the water plates 12 , both ends of the tube bundle 6 in the condensation section are connected to the side wall of the device housing on the same side through the baffle plate 10 , and the tube bundle 6 in the condensation section is also connected to a non-condensable gas separation pipe 18 .

The water distribution-refrigerant coil joint unit is composed of a water distributor and a refrigerant coil 3 arranged up and down.

The water distributor is composed of a water distribution pipe 19 and a plurality of nozzles 4 uniformly arranged on the water distribution pipe 19 and spraying toward the refrigerant coil 3 .

The coil inlet of the refrigerant coil 3 is connected to the refrigerant inlet 15 through a water inlet pipe, and the coil outlet of the refrigerant coil 3 is connected to the refrigerant outlet 16 through a water outlet pipe.

The utility model is based on an evaporative condensing device for pre-cooling with separate heat pipes, and its working process is as follows:

(1) The working process of the air system is as follows:

The outdoor air enters the device shell through the air inlet 1, first evaporates and absorbs heat through the tube bundle 2 of the evaporating section, and reduces the dry bulb temperature of the air, and then sprays water on the refrigerant coil 3 from the nozzle 4 on the water distribution pipe to form a water film ;

The cooled air exchanges heat and moisture with the water film on the outer surface of the refrigerant coil 3 again to form cold air, which is used to cool the refrigerant vapor in the refrigerant coil 3 and take away the condensation heat of the refrigerant. Then, it is blocked by two baffles 10 to ensure that all the air passes through the tube bundle 6 of the condensation section and takes away the condensation heat of the separated heat pipe heat exchanger;

Finally, the air continues to flow upwards, and after filtering excess water through the water retaining plate 12, it is discharged to the outside through the air outlet 14 under the action of the exhaust fan 13.

(2) The working process of the circulating water system is as follows:

The circulating water in the water collection tank 7 is pressurized and lifted by the circulating water pump 9, and is transported to the water distribution pipe 19 through the water supply pipe 17, and the water is sprayed onto the surface of the refrigerant coil 3 by a plurality of nozzles 4 uniformly arranged on the water distribution pipe 19, and the The outdoor air flowing from bottom to top performs heat and moisture exchange, and the outdoor air takes away the condensation heat of the refrigerant, and the unevaporated water droplets finally fall back into the water collection tank 7, and the cycle is like this.

(3) The working process of the separated heat pipe heat exchanger is as follows:

The tube bundle 2 of the evaporating section in the separated heat pipe heat exchanger is under the action of the outdoor air, and the liquid in the wool core evaporates and vaporizes due to heating, cooling the outdoor air, and the steam flows through the steam conduit 5 to the tube bundle 6 of the condensing section, and the steam flows in the tube bundle 6 of the condensing section The heat released inside condenses into a liquid, and the liquid flows back to the tube bundle 2 of the evaporation section along the condensate conduit 8, and so on.

A non-condensable gas separation pipe 18 is connected to the tube bundle 6 in the condensing section, and an exhaust valve 11 is installed on the non-condensable gas separation pipe 18, which can remove the non-condensable gas at any time.

The evaporative condensing device of the utility model combines the separated heat pipe heat exchanger with the water distribution-refrigerant coil combined unit, makes full use of their respective advantages, enhances the heat exchange effect, and makes the whole device have the advantages of high efficiency and energy saving .

Claims (7)

1. the evaporating type condensing device based on separate heat pipe precooling, is characterized in that, includes device case, and the bottom of described device case one sidewall is provided with air inlet (1), is provided with exhaust outlet (14) on the roof of described device case;

In described device case, be provided with core coolant unit, the top of described core coolant unit is provided with water fender (12), between described water fender (12) and exhaust outlet (14), is provided with exhaust blower (13);

Described core coolant unit, includes water distribution-cold-producing medium coil pipe associated units and separate type heat pipe exchanger; The below of described water distribution-cold-producing medium coil pipe associated units and separate type heat pipe exchanger is provided with header tank (7), and described header tank (7) is connected with water distribution-cold-producing medium coil pipe associated units by feed pipe (17);

Described separate type heat pipe exchanger, include evaporator section tube bank (2) and the section of condensing tube bank (6), described evaporator section tube bank (2) is connected with the section of condensing tube bank (6) by steam lead (5), the described section of condensing tube bank (6) is connected with evaporator section tube bank (2) by condensation water conduit (8), forms a closed-loop path;

Described evaporator section tube bank (2) is positioned between water distribution-cold-producing medium coil pipe associated units and header tank (7), and locates to arrange near air inlet (1);

The described section of condensing tube bank (6) is positioned between water distribution-cold-producing medium coil pipe associated units and water fender (12), the two ends of the described section of condensing tube bank (6) are all connected with the device case sidewall of homonymy by baffle plate (10), described in the section of condensing restrain (6) and be connected with incondensable gas separator tube (18).

2. evaporating type condensing device according to claim 1, is characterized in that, in described air inlet (1) and exhaust outlet (14), is provided with volume control damper.

3. evaporating type condensing device according to claim 1 and 2, is characterized in that, described air inlet is provided with screen pack in (1).

4. evaporating type condensing device according to claim 1, is characterized in that, described water distribution-cold-producing medium coil pipe associated units is made up of the water-locator and the cold-producing medium coil pipe (3) that go to upper and lower setting.

5. evaporating type condensing device according to claim 4, it is characterized in that, described water-locator is made up of water distributor (19) and multiple water distributor (19) nozzle (4) upper, that spray towards cold-producing medium coil pipe (3) that is evenly arranged at, described water distributor (19) is connected with feed pipe (17), is provided with water circulating pump (9) on described feed pipe (17).

6. evaporating type condensing device according to claim 4, it is characterized in that, the coil pipe entrance of described cold-producing medium coil pipe (3) is connected with refrigerant inlet (15) by water inlet pipe, and the coil pipe outlet of described cold-producing medium coil pipe (3) is connected with refrigerant outlet (16) by outlet pipe.

7. evaporating type condensing device according to claim 1, is characterized in that, is provided with air bleeding valve (11) on described incondensable gas separator tube (18).