Energy-saving cooling tower of air conditioning system and using method of energy-saving cooling tower

Abstract

The invention discloses an energy-saving cooling tower of an air conditioning system and a using method of the energy-saving cooling tower. The energy-saving cooling tower comprises a shell, and an air outlet is formed in the top of the shell; two baffles are installed in the shell and divide the interior of the shell into an air mixing chamber and two air inlet chambers, the air mixing chamber and the two air inlet chambers are communicated with the air outlet, and an air cooler, a sprayer, a heat exchanger and filler are sequentially arranged in each air inlet chamber from top to bottom. A first air inlet is formed in the top of the shell, a second air inlet is formed in the lower portion of the side face of the shell, and a cover plate is detachably installed at the second air inlet. A first air outlet is formed in the upper portion of the baffle, a second air outlet is formed in the lower portion of the baffle, and automatic louver boards are installed at the first air outlet and the second air outlet. By arranging the two air inlets and the two air outlets and adopting different opening and closing combinations of the air inlets and the air outlets, different air flowing paths in the cooling tower are realized, so that the cooling requirements in different seasons are met, and the energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning systems, and in particular to an energy-saving cooling tower of an air conditioning system and a use method thereof. Background Art

[0002] The cooling tower of the air conditioning system is a device that lowers the temperature of the high-temperature condensing agent generated by the air conditioning system through heat exchange with air or cooling water so that the condensing agent can be recycled.

[0003] In order to adapt to the changes in different seasons, a cooling tower structure combining air cooling and spraying has appeared on the market. In winter, the spraying can be turned off and air cooling can be used alone for cooling. However, the existing spraying tower cannot effectively cool down in extremely hot weather in summer, and a refrigerator needs to be installed for auxiliary cooling, which increases energy consumption. In the transitional seasons of spring and autumn, air cooling alone cannot meet the cooling needs, and spraying is still needed for assistance, resulting in a waste of water resources.

[0004] Based on the above technical problems, the present application proposes an energy-saving cooling tower for an air-conditioning system and a method for using the same. Summary of the invention

[0005] The object of the present invention is to provide an energy-saving cooling tower for an air-conditioning system and a method for using the same to solve the technical problems mentioned in the background technology. The object of the present invention is achieved through the following technical solutions: An energy-saving cooling tower for an air-conditioning system comprises a shell, wherein an exhaust port is provided on the top of the shell, and a fan is installed at the exhaust port; a mesh plate is installed at the bottom of the shell, and a water pool is arranged below the mesh plate; two baffles are arranged between the inner top surface of the shell and the upper surface of the mesh plate, and the two baffles are respectively arranged on both sides of the exhaust port to divide the interior of the shell into a mixed air chamber connected to the exhaust port and two air inlet chambers located on both sides of the mixed air chamber, wherein an air cooler, a sprayer, a heat exchanger and a filler are arranged in the air inlet chamber from top to bottom in sequence; a first air inlet is provided on the top of the shell, and a second air inlet is provided on the lower part of the side surface of the shell, the first air inlet and the second air inlet are both connected to the air inlet chamber, and a cover plate is detachably installed at the second air inlet; a first air outlet is provided on the upper part of the baffle, and the first air outlet is located between the air cooler and the sprayer, a second air outlet is provided on the lower part of the baffle, and the second air outlet is located at the filler, and automatic shutters are installed at the first air outlet and the second air outlet.

[0006] Furthermore, the air cooler comprises an air cooler water inlet pipe, an air cooler water outlet pipe and finned tubes, and a plurality of finned tubes are connected between the air cooler water inlet pipe and the air cooler water outlet pipe.

[0007] Furthermore, the heat exchanger comprises a heat exchanger water inlet pipe, a heat exchanger water outlet pipe and a serpentine pipe, a plurality of serpentine pipes are connected between the heat exchanger water inlet pipe and the heat exchanger water outlet pipe, and the serpentine pipes are filled with loose porous heat-conducting material.

[0008] Furthermore, the air cooler water inlet pipe is connected to the air conditioning system condenser water outlet pipe, the heat exchanger water outlet pipe is connected to the air conditioning system condenser return pipe, a three-way valve is installed between the air cooler water outlet pipe and the heat exchanger water inlet pipe, the remaining interface of the three-way valve is connected to the air conditioning system condenser return pipe through a three-way joint, and an electromagnetic valve is connected between the three-way joint and the heat exchanger water outlet pipe.

[0009] Furthermore, the ratio of the total length of the finned tube to the serpentine tube is 1.5-2:1.

[0010] Furthermore, a coil is arranged in the water pool, and the coil is connected to a chilled water channel of a chiller of the air-conditioning system.

[0011] Furthermore, an automatic louver is installed at the first air inlet, a wind hood is installed at the first air inlet, and grilles are installed at the opening of the wind hood and the second air inlet respectively.

[0012] Furthermore, the automatic louver at the first air outlet opens upward, and the automatic louver at the second air outlet opens downward.

[0013] Furthermore, a water collector is installed on the top of the air mixing chamber.

[0014] A method for using an energy-saving cooling tower using any of the above air conditioning systems: In summer: the first air inlet, the second air inlet, the first air outlet, and the second air outlet are all open. Under the action of the fan, part of the air enters from the first air inlet, passes through the air cooler, and enters the air mixing chamber from the first air outlet; the sprayer sprays the heat exchanger, and the sprayed water falls into the pool through the filler; part of the air enters from the second air inlet, passes through the filler, and enters the air mixing chamber from the second air outlet, and is mixed with the hot air discharged from the first air outlet and discharged from the exhaust port; In spring and autumn: the sprinkler does not work, the first air inlet and the second air outlet are open, the second air inlet and the first air outlet are closed, and under the action of the fan, air enters from the first air inlet, passes through the air cooler and the heat exchanger, enters the air mixing chamber from the second air outlet, and is discharged from the exhaust port; In winter: the sprinkler does not work, the first air inlet and the first air outlet are open, the second air inlet and the second air outlet are closed, and under the action of the fan, air enters from the first air inlet, passes through the air cooler, enters the mixing chamber from the first air outlet, and is discharged from the exhaust port.

[0015] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages: 1. By setting two air inlets and two air outlets and adopting different opening and closing combinations of air inlets and air outlets, different air flow paths in the cooling tower can be realized, thereby adapting to the cooling needs of different seasons and saving energy consumption; 2. Using the chilled water from the air-conditioning system chiller to cool the cooling water in the pool can ensure the cooling effect of the cooling tower in high temperatures in summer. There is no need to install a separate refrigerator, saving installation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the waterway in the embodiment of the present application; Figure 3 This is a schematic diagram of the air cooler structure of the embodiment of the present application; Figure 4 This is a schematic diagram of the structure of the sprayer in the embodiment of the present application; Figure 5 This is a schematic diagram of the heat exchanger structure of an embodiment of the present application.

[0018] Markings in the attached figure: 1. Shell; 11. Exhaust port; 12. Mesh plate; 13. Water pool; 14. Baffle; 141. First air outlet; 142. Second air outlet; 15. First air inlet; 16. Wind hood; 17. Second air inlet; 18. Coil; 2. Fan; 3. Air cooler; 31. Air cooler water inlet pipe; 32. Air cooler water outlet pipe; 33. Fin tube; 4. Sprinkler; 41. Spray main pipe; 42. Spray branch pipe; 43. Sprinkler; 5. Heat exchanger; 51. Heat exchanger water inlet pipe; 52. Heat exchanger water outlet pipe; 53. Serpentine pipe; 54. Support plate; 6. Filling; 7. Grille; 8. Automatic louver; 9. Water collector. DETAILED DESCRIPTION

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings and specific implementation methods of the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] like Figure 1 An energy-saving cooling tower of an air conditioning system shown in the figure comprises a shell 1, which is a cubic structure made of stainless steel welded, with an exhaust port 11 on the top of the shell 1, and a fan 2 is installed at the exhaust port 11. A mesh plate 12 is horizontally installed at the bottom of the shell 11 through a bracket, and a distance is left between the mesh plate 12 and the bottom of the shell 1 to form a water pool 13 at the bottom of the shell 1.

[0021] like Figure 1 As shown, two baffles 14 made of stainless steel are vertically installed inside the shell 1, and the two baffles 14 are symmetrically installed on both sides of the exhaust port 11. The upper end surface of the baffle 14 is connected to the inner top surface of the shell 1, the lower end surface of the baffle 14 is connected to the upper surface of the mesh plate 12, and the two side end surfaces of the baffle 14 are respectively connected to the inner side wall of the shell 1, dividing the inside of the shell 1 into a mixed air chamber connected to the exhaust port 11 and two air inlet chambers located on both sides of the mixed air chamber, and the air cooler 3, the sprayer 4, the heat exchanger 5 and the filler 6 are installed in the two air inlet chambers from top to bottom.

[0022] like Figure 1 As shown, two first air inlets 15 are provided at the top of the shell 1, and the two first air inlets 15 are symmetrically installed on both sides of the exhaust port 11, and the first air inlet 15 is located directly above the air cooler 3. A semicircular wind hood 16 is installed at the first air inlet 15, and a grille 7 is installed at the opening of the wind hood 16 to prevent debris from being sucked into the shell 1. Two second air inlets 17 are provided at the lower part of the side of the shell 1, and the two second air inlets 17 are connected to the two air inlet chambers respectively. The second air inlet 17 is located at the filler 6, and a grille 7 is also installed at the second air inlet 17 to prevent debris from being sucked into the shell 1. A cover plate (not shown) is also detachably installed at the second air inlet 17 by bolts to block the second air inlet 17.

[0023] like Figure 1 As shown, a first air outlet 141 is provided at the upper portion of the baffle 14, and the first air outlet 141 is located between the air cooler 3 and the sprayer 4. A second air outlet 142 is provided at the lower portion of the baffle 14, and the second air outlet 142 is located at the filler 6. Automatic louvers 8 are installed at the first air inlet 15, the first air outlet 141, and the second air outlet 142. The automatic louvers 8 are louvers controlled by a cylinder or a motor, and can realize the opening and closing of the first air inlet 15, the first air outlet 141, and the second air outlet 142, and can realize the adjustment of wind direction and air volume by adjusting the angle. The structure and principle of the automatic louvers 8 are both existing technologies, and will not be repeated here.

[0024] The automatic shutter 8 at the first air outlet 141 opens upwards so that the dry hot air flowing out of the first air outlet 141 flows to the lower part of the air mixing chamber, and the automatic shutter 8 at the second air outlet 142 opens downwards so that the moist hot air flowing out of the second air outlet 142 flows to the upper part of the air mixing chamber, so as to achieve full mixing of the dry hot air and the moist hot air, reduce the humidity of the exhaust air, and avoid the formation of white mist. A water collector 9 is installed on the top of the air mixing chamber, and the water collector 9 is preferably a foam metal plate, which is used to intercept and recover the water mist in the exhaust air to save water resources.

[0025] like Figure 2 , Figure 4 As shown, the sprayer 4 includes a spray main pipe 41, a spray branch pipe 42 and a spray head 43. A plurality of spray branches 42 are symmetrically installed on both sides of the spray main pipe 41, and a plurality of spray heads 43 are evenly installed on the lower side of the spray branch pipe 42. The spray main pipe 41 is connected to the water pool 13 through a water pump. The water pump is started to pump water in the water pool 13 to the sprayer 4, and then flows back to the water pool 13 after passing through the heat exchanger 5 and the filler 6. Preferably, a coil 18 is installed in the water pool 13, and the coil 18 is connected to a chilled water line of the chiller of the air conditioning system. When the temperature is high in summer, the valve of the chilled water line is opened to cool the water in the water pool 13.

[0026] like Figure 3 As shown, the air cooler 3 includes an air cooler water inlet pipe 31 , an air cooler water outlet pipe 32 and finned tubes 33 , and a plurality of finned tubes 33 are connected in parallel between the air cooler water inlet pipe 31 and the air cooler water outlet pipe 32 .

[0027] like Figure 5 As shown, the heat exchanger 5 includes a heat exchanger water inlet pipe 51, a heat exchanger water outlet pipe 52 and a serpentine pipe 53. A plurality of serpentine pipes 53 are connected in parallel between the heat exchanger water inlet pipe 51 and the heat exchanger water outlet pipe 52, and two adjacent layers of serpentine pipes 53 are arranged in a staggered manner. Three groups of support plates 54 are also fixed on the serpentine pipes 53, and the bottom edge of the support plate 54 is placed on the angle steel to prevent the serpentine pipes 53 from being deformed. Preferably, the serpentine pipes 53 are filled with loose porous heat-conducting materials, such as steel wool balls, to ensure the contact between water and the serpentine pipes 53 and improve the heat exchange efficiency.

[0028] like Figure 2 As shown, the air cooler water inlet pipe 31 is connected to the air conditioning system condenser water outlet pipe, the heat exchanger water outlet pipe 52 is connected to the air conditioning system condenser return pipe, a three-way valve is installed between the air cooler water outlet pipe 32 and the heat exchanger water inlet pipe 51, the remaining interface of the three-way valve is connected to the air conditioning system condenser return pipe through a three-way joint, and a solenoid valve is connected between the three-way joint and the heat exchanger water outlet pipe 52.

[0029] In spring, summer and autumn, the three-way valve is adjusted to connect the air cooler outlet pipe 32 with the heat exchanger inlet pipe 52, and the solenoid valve is opened to allow the condensed water to flow back to the condenser of the air conditioning system through the air cooler 3 and the heat exchanger 5 in sequence. In winter, the three-way valve is adjusted to connect the air cooler outlet pipe 32 directly with the air conditioning system condenser return pipe, and the solenoid valve is closed to allow the condensed water to only pass through the air cooler 3. Among them, the ratio of the total length of the finned tube 33 to the serpentine tube 53 is 1.5-2:1, that is, the total length of the finned tube 33 is 1.5-2 times the total length of the serpentine tube 53, so as to ensure the cooling effect of using the air cooler 3 alone. Example

[0030] A method for using an energy-saving cooling tower of an air conditioning system in embodiment 1, such as Figure 1 , Figure 2 As shown: In summer time: Adjust the three-way valve to connect the air cooler outlet pipe 32 with the heat exchanger inlet pipe 52, and open the solenoid valve to allow the condensed water to flow back to the condenser of the air conditioning system through the air cooler 3 and the heat exchanger 5 in sequence. At this time, the first air inlet 15, the second air inlet 17, the first air outlet 141, and the second air outlet 142 are all in an open state. Under the action of the fan 2, part of the air enters the air inlet chamber from the first air inlet 15, passes through the air cooler 3, and then enters the mixing chamber from the first air outlet 141 downward. At the same time, turn on the sprayer 4 to spray the heat exchanger 5, and the sprayed water falls into the pool through the filler 6. Part of the air enters from the second air inlet 17, and the sprayed water is cooled by the filler 6, and then enters the mixing chamber from the second air outlet 142, and is mixed with the hot air discharged from the first air outlet 141 and discharged from the exhaust port 11. When the outdoor temperature exceeds the set threshold, a chilled water line of the air-conditioning system chiller is connected, and the spray water is cooled through the coil 18 to ensure the normal operation of the chiller.

[0031] In spring and autumn: The three-way valve is adjusted to connect the air cooler outlet pipe 32 with the heat exchanger inlet pipe 52, and the solenoid valve is opened to allow the condensed water to flow back to the condenser of the air conditioning system through the air cooler 3 and the heat exchanger 5 in sequence, and the sprayer 4 does not work. The first air inlet 15 and the second air outlet 142 are in an open state, while the second air inlet 17 and the first air outlet 141 are in a closed state. Under the action of the fan 2, the air enters the air inlet chamber from the first air inlet 15, passes through the air cooler 3 and the heat exchanger 5, enters the mixing chamber from the second air outlet 142, and is discharged from the exhaust port 11, so that the air can exchange heat with the air cooler 3 and the heat exchanger 5, prolonging the heat exchange time and improving the heat exchange effect.

[0032] In winter: Due to the low ambient temperature, the three-way valve is adjusted to make the air cooler outlet pipe 32 directly connected to the air conditioning system condenser return pipe, and the solenoid valve is closed so that the condensed water only passes through the air cooler 3, and the sprayer 4 does not work. The first air inlet 15 and the first air outlet 141 are in an open state, and the second air inlet 17 and the second air outlet 142 are in a closed state. Under the action of the fan 2, air enters from the first air inlet 15, passes through the air cooler 3, enters the mixing chamber from the first air outlet 141, and is discharged from the exhaust port 11. This shortens the heat exchange time of the condensed water in the cooling tower and prevents the low temperature from affecting the normal operation of the chiller.

[0033] In addition, when the machine is shut down at night in winter, the first air inlet 15, the first air outlet 141 and the second air outlet 142 can be closed by the automatic shutter 8 to prevent the condensed water from freezing due to the low temperature at night.

[0034] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages: 1. By setting two air inlets and two air outlets and adopting different opening and closing combinations of air inlets and air outlets, different air flow paths in the cooling tower can be realized, thereby adapting to the cooling needs of different seasons and saving energy consumption; 2. Using the chilled water from the air-conditioning system chiller to cool the cooling water in the pool can ensure the cooling effect of the cooling tower in high temperatures in summer. There is no need to install a separate refrigerator, saving installation costs.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy-saving cooling tower for an air conditioning system, characterized in that: The invention comprises a shell, wherein an exhaust port is provided on the top of the shell, and a fan is installed at the exhaust port; a mesh plate is installed at the bottom of the shell, and a water pool is arranged below the mesh plate; two baffles are arranged between the inner top surface of the shell and the upper surface of the mesh plate, and the two baffles are respectively installed on both sides of the exhaust port to divide the interior of the shell into an air mixing chamber connected to the exhaust port and two air inlet chambers located on both sides of the air mixing chamber, and an air cooler, a sprayer, a heat exchanger and a filler are arranged in the air inlet chamber in order from top to bottom; A first air inlet is provided at the top of the shell, a second air inlet is provided at the lower part of the side of the shell, the first air inlet and the second air inlet are both connected to the air inlet chamber, and a cover plate is detachably installed at the second air inlet; a first air outlet is provided at the upper part of the baffle, the first air outlet is located between the air cooler and the sprayer, a second air outlet is provided at the lower part of the baffle, the second air outlet is located at the filler, and automatic louvers are installed at the first air outlet and the second air outlet.

2. The energy-saving cooling tower of an air conditioning system according to claim 1, characterized in that: The air cooler comprises an air cooler water inlet pipe, an air cooler water outlet pipe and finned tubes, and a plurality of the finned tubes are connected between the air cooler water inlet pipe and the air cooler water outlet pipe.

3. The energy-saving cooling tower of an air conditioning system according to claim 2, characterized in that: The heat exchanger comprises a heat exchanger water inlet pipe, a heat exchanger water outlet pipe and a serpentine pipe, a plurality of the serpentine pipes are connected between the heat exchanger water inlet pipe and the heat exchanger water outlet pipe, and the space between the serpentine pipes is filled with loose porous heat-conducting material.

4. The energy-saving cooling tower of an air conditioning system according to claim 3, characterized in that: The air cooler water inlet pipe is connected to the air conditioning system condenser water outlet pipe, the heat exchanger water outlet pipe is connected to the air conditioning system condenser return pipe, a three-way valve is installed between the air cooler water outlet pipe and the heat exchanger water inlet pipe, the remaining interface of the three-way valve is connected to the air conditioning system condenser return pipe through a three-way joint, and a solenoid valve is connected between the three-way joint and the heat exchanger water outlet pipe.

5. The energy-saving cooling tower of an air conditioning system according to claim 3, characterized in that: The ratio of the total length of the finned tube to the total length of the serpentine tube is 1.5-2:

1.

6. The energy-saving cooling tower of an air conditioning system according to claim 1, characterized in that: A coil is arranged in the water pool, and the coil is connected to a chilled water channel of a chiller of an air-conditioning system.

7. The energy-saving cooling tower of an air conditioning system according to claim 1, characterized in that: The automatic shutter is installed at the first air inlet, a wind cover is installed at the first air inlet, and grilles are installed at the opening of the wind cover and the second air inlet respectively.

8. The energy-saving cooling tower of an air conditioning system according to claim 1, characterized in that: The automatic louver at the first air outlet opens upward, and the automatic louver at the second air outlet opens downward.

9. The energy-saving cooling tower of an air conditioning system according to claim 1, characterized in that: A water collector is installed on the top of the air mixing chamber.

10. A method for using an energy-saving cooling tower of an air conditioning system according to any one of claims 1 to 9, characterized in that: In summer: the first air inlet, the second air inlet, the first air outlet, and the second air outlet are all open. Under the action of the fan, part of the air enters from the first air inlet, passes through the air cooler, and enters the air mixing chamber from the first air outlet; the sprayer sprays the heat exchanger, and the sprayed water falls into the pool through the filler; part of the air enters from the second air inlet, passes through the filler, and enters the air mixing chamber from the second air outlet, and is mixed with the hot air discharged from the first air outlet and discharged from the exhaust port; In spring and autumn: the sprinkler does not work, the first air inlet and the second air outlet are open, the second air inlet and the first air outlet are closed, and under the action of the fan, air enters from the first air inlet, passes through the air cooler and the heat exchanger, enters the air mixing chamber from the second air outlet, and is discharged from the exhaust port; In winter: the sprinkler does not work, the first air inlet and the first air outlet are open, the second air inlet and the second air outlet are closed, and under the action of the fan, air enters from the first air inlet, passes through the air cooler, enters the mixing chamber from the first air outlet, and is discharged from the exhaust port.

Images