A water chiller and a method of using the same

Abstract

The application relates to the heat dissipation field of cooling units and discloses a water chiller, which comprises a body and a cooling water tower, the cooling water tower comprises a frame body, a heat dissipation mechanism is installed on the frame body, the heat dissipation mechanism comprises a wind guide ring shell in the shape of an annular shell arranged vertically and a sleeve shell coaxially arranged in the wind guide ring shell, the upper and lower ends of the sleeve shell are open, the upper opening is communicated with the wind guide ring shell through an arc pipe, a filter core is further installed on the frame body and located outside the wind guide ring shell, the filter core is communicated with the wind guide ring shell through an air inlet nozzle, a water receiving ring is coaxially arranged at the upper opening of the sleeve shell, an installation hole coaxial with the sleeve shell is arranged on the upper surface of the arc pipe, an upper spray pipe in the shape of a ring pipe is coaxially arranged in the installation hole, a plurality of spray holes are arranged in the circumferential direction at the bottom of the upper spray pipe, water sprayed through the spray holes is in the shape of a water curtain and can fall into the water receiving ring, and the upper spray pipe is communicated with a water pipe.

Description

Technical Field

[0001] This invention relates to the field of water chillers, specifically to the field of heat dissipation in cooling units, and particularly to a water chiller and its method of use. Background Technology

[0002] A chiller unit is a highly efficient and energy-saving refrigeration equipment, divided into air-cooled and water-cooled types. Water-cooled chillers use water as the cooling medium for the condenser. The heat exchange tool in a water-cooled chiller is primarily a cooling tower. In existing technology, the hot water in the chiller unit is pumped into the upper part of the cooling tower and sprayed downwards through nozzles. Under gravity, the water flows downwards. Air is drawn in from the lower part of the tower by a blower and flows upwards, cooling the hot water. The cooled water then flows out from the bottom of the tower and returns to its source. There are some shortcomings in water chiller units: for example, when hot water is sprayed downwards through nozzles, if the water droplets are large, the outer surface will come into contact with the wind and cool down through heat exchange, but the heat inside the water will be difficult to dissipate in a short time, resulting in poor heat dissipation. If the water droplets are small, the heat dissipation effect is better, but they are easily blown away by the wind, resulting in greater water loss. Therefore, this invention proposes a water chiller unit that balances improving heat dissipation effect with avoiding additional water loss. Summary of the Invention

[0003] To address the problems mentioned in the background above, the present invention provides a chiller unit and its usage method.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows.

[0005] A chiller unit includes a main body and a cooling tower. A water pipe is provided between the condenser outlet of the main body and the inlet of the cooling tower. A water pipe is provided at the outlet of the cooling tower. A water pump is provided at the end of the water pipe. The water pump is connected to the inlet of the condenser through a water pipe.

[0006] The cooling tower includes a frame, on which a heat dissipation mechanism is installed. The heat dissipation mechanism includes an air guide ring shell and an outer shell. The air guide ring shell is a vertically arranged annular shell shape. The outer shell is located inside the air guide ring shell. The upper and lower ends of the outer shell are open, and the upper opening is connected to the air guide ring shell through an arc tube. A filter element is also installed on the frame, located outside the air guide ring shell. The filter element is connected to the air guide ring shell through an air inlet.

[0007] A water receiving ring is coaxially installed at the upper opening of the outer shell. The upper surface of the arc tube has a mounting hole coaxial with the outer shell. An upper spray pipe in the shape of a ring tube is coaxially installed in the mounting hole. Several spray holes are arranged in an array along the circumference at the bottom of the upper spray pipe. The water sprayed through the spray holes forms a water curtain shape and the water curtain can fall into the water receiving ring. The upper spray pipe is connected to the water pipe.

[0008] Furthermore, the water receiving ring has an open upper end and a closed lower end, with several bottom holes arranged in an array along the circumference of the closed end. An external water guide pipe extends from the lower opening of the bottom hole and is inclined towards the axis of the water receiving ring. The bottoms of the several external water guide pipes are connected by a connecting ring pipe. Below the connecting ring pipe are two bottom ring pipes, one bottom ring pipe and one bottom ring pipe. The first bottom ring pipe is connected to the connecting ring pipe, the first bottom ring pipe is connected to the inlet end of the second water pump installed on the frame, and the second bottom ring pipe is connected to the outlet end of the second water pump.

[0009] Furthermore, the heat dissipation mechanism also includes an inner water guide pipe located coaxially inside the water receiving ring. The inner water guide pipe is a hollow frustum shape, and several fins are arranged in an array along the circumferential direction on the inner wall of the inner water guide pipe. The inner water guide pipe is connected to the bottom ring pipe.

[0010] Furthermore, the diameter of the horizontal cross-section of the inner water pipe decreases first and then increases from bottom to top.

[0011] Furthermore, the upper end of the inner water guide pipe is open and coaxially disposed on the inner ring surface of the upper spray pipe, while the lower end of the inner water guide pipe is closed and coaxially disposed on the inner ring surface of the connecting ring pipe.

[0012] Furthermore, an upper ring pipe is coaxially installed at the upper opening of the inner water guide pipe;

[0013] The heat dissipation mechanism also includes a nozzle coaxially located inside the inner water guide pipe. The nozzle is connected to the upper ring pipe through a pipe assembly. A fan housing extends coaxially downward from the lower closed end of the inner water guide pipe, and a fan is installed inside the fan housing.

[0014] Furthermore, the heat dissipation mechanism also includes a water outlet pipe and a water box. The water outlet pipe includes an annular segment that is shaped like a ring and coaxially located outside the air guide ring shell. There are two annular segments, namely an outer annular segment and an inner annular segment. The bottoms of the two annular segments are connected. The upper end of the outer annular segment is open. The upper end of the inner annular segment extends inward to form a cylindrical segment. A connecting hole is provided on the lower end face of the cylindrical segment. The lower opening of the connecting hole is connected to the upper end of the upper annular pipe. Two fins are provided inside the cylindrical segment.

[0015] The water box is located below the water outlet pipe. The connection point of the two annular sections of the water outlet pipe extends downwards to form a connecting pipe. The bottom of the connecting pipe extends into the water box and is located below the water surface inside the water box. The third water pipe is connected to the bottom of the water box.

[0016] Furthermore, the upper surface of the water outlet pipe is provided with fins three and fan one, and fan one and the blower are connected by a connecting shaft to achieve power connection.

[0017] Furthermore, a cleaning mechanism for periodically cleaning the filter cartridge is installed on the frame.

[0018] A method for using a water chiller unit:

[0019] Step 1: Hot water from the condenser flows sequentially through water pipe 1, main ring pipe, and branch pipe into the upper spray pipe, and then flows out through the spray holes. When it flows out, the hot water forms a thin water curtain and flows into the water receiving ring. At the same time, the airflow generated by the fan passes through the area between two adjacent water curtains to dissipate heat from the water curtain.

[0020] Step 2: The water in the water ring flows into the bottom ring pipe through the outer water pipe. At the same time, the airflow passes through the area between two adjacent outer water pipes to dissipate heat from the water in the outer water pipe.

[0021] Step 3: Water pump 2 runs, drawing water from bottom ring pipe 1 through bottom ring pipe 2 into the inner water guide pipe. At the same time, airflow flows in the inner water guide pipe to dissipate heat from the water in the inner water guide pipe.

[0022] Step 4: Water in the inner water pipe flows into the nozzle through the upper ring pipe and pipe assembly, and is sprayed out in the form of water mist through the nozzle. At the same time, the airflow velocity increases at the bend of the inner water pipe, impacting the water mist, thereby breaking up the water mist and mixing it evenly in the airflow. The water mist flows with the airflow, and the airflow dissipates heat from the water mist.

[0023] Step 5: Airflow and water mist enter the outlet pipe. The airflow passes through the cylindrical section, inner annular section and outer annular section of the outlet pipe in sequence and is discharged outward. The water mist adheres to fin 2 and accumulates at the bottom of the annular section. It then flows into the water box through the connecting pipe. After that, the water in the water box is drawn back into the condenser by water pump 1.

[0024] Compared with the prior art, the beneficial effects of this invention are as follows:

[0025] 1. In this scheme, the water medium is cooled by air in sequence when it is in the shape of a water curtain, in the outer water pipe, in the inner water pipe, and in the state of water mist. During this process, on the one hand, the water curtain is relatively thin and has a large contact area with the air, resulting in better heat dissipation. On the other hand, the water curtain, the outer water pipe, and the inner water pipe are all arranged at an angle, resulting in a longer flow trajectory of the water medium and better heat dissipation. When it comes into contact with the air in the state of water mist, the heat dissipation effect is even better. In short, the heat dissipation effect of this scheme is better.

[0026] 2. In the water-medium heat dissipation process described in 1, the air passes through the water curtain from the outside. Therefore, when the chiller unit's power is relatively low, the temperature of the hot water produced by the condenser is relatively low, and the cooling tower's fan also operates at a relatively low power, generating relatively weak airflow and relatively low resistance to the water curtain, allowing the water curtain to fall accurately into the receiving ring. When the chiller unit's power is relatively high, the temperature of the hot water produced by the condenser is relatively high, and the cooling tower's fan also operates at a relatively high power, generating relatively strong airflow and relatively low resistance to the water curtain. A larger fan ensures the water curtain falls accurately into the receiving ring, preventing additional loss of the water medium. Conversely, without fan resistance, a higher chiller unit operating power results in faster water circulation in the condenser, leading to a greater initial velocity of the water curtain ejected from the nozzles. This further distances the water curtain's landing point on the receiving ring's horizontal plane from the ring's axis, increasing the risk of the water curtain overflowing the ring and causing additional water medium loss. In short, this solution improves heat dissipation while preventing additional water medium loss.

[0027] 3. In this design, the diameter of the horizontal cross-section of the inner water pipe decreases and then increases from bottom to top. The advantage of this is that, based on Bernoulli's principle, the airflow velocity is faster at the transition point between the increasing and decreasing velocity. Since the nozzle is located above and close to the transition point, the water mist sprayed from the nozzle is subjected to a great airflow impact at the first moment. The impact can break up the larger water droplets in the water mist, ensuring that all water mist can flow with the airflow and avoiding additional water mist loss. In addition, the impact on the water mist at the transition point can also make the water mist spread evenly in the airflow, improving the heat dissipation effect of the airflow on the water mist. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the present invention;

[0029] Figure 2 This is a schematic diagram of a cooling tower;

[0030] Figure 3 This is a cross-sectional view of the heat dissipation mechanism;

[0031] Figure 4 Partial cross-section of the heat dissipation mechanism Figure 1 ;

[0032] Figure 5 Partial cross-section of the heat dissipation mechanism Figure 2 ;

[0033] Figure 6 Partial cross-section of the heat dissipation mechanism Figure 3 ;

[0034] Figure 7 This is a partial schematic diagram of the upper spray nozzle;

[0035] Figure 8 This is a cross-sectional view of the water inlet ring and the external water guide pipe;

[0036] Figure 9 This is a cross-sectional view of the internal water guide pipe and the nozzle;

[0037] Figure 10 This is a cross-sectional view of the water outlet pipe and water box;

[0038] Figure 11 This is a cross-sectional view of the water outlet pipe;

[0039] Figure 12 This is a schematic diagram of the cleaning mechanism;

[0040] Figure 13 This is a partial schematic diagram of the cleaning mechanism.

[0041] The labels in the attached diagram are:

[0042] 100. Main body; 101. Water pipe one; 102. Water pump one; 103. Water pipe two; 104. Water pipe three; 200. Cooling tower; 300. Frame; 400. Heat dissipation mechanism; 401. Main ring pipe; 402. Branch pipe; 403. Air guide ring shell; 404. Filter element; 405. Outer shell; 406. Fan; 407. Upper spray pipe; 4071. Spray hole; 408. Water receiving ring; 4081. Bottom hole; 409. Outer water guide pipe; 4091. Connecting ring pipe; 4092. Bottom ring pipe one; 4093. Bottom ring pipe two; 410. Inner water guide pipe; 41 01. Fin 1; 411. Water Pump 2; 412. Upper Ring Pipe; 413. Nozzle; 414. Pipe Assembly; 415. Water Outlet Pipe; 416. Fin 2; 417. Connecting Pipe; 418. Water Box; 419. Fin 3; 420. Fan 1; 421. Connecting Shaft; 500. Cleaning Mechanism; 501. Fixed Shaft; 502. Motor; 503. Bracket; 504. Bevel Gear Set; 505. Drive Shaft; 506. Cleaning Frame; 507. Cleaning Components; 508. Fan 2; 509. Crank-Slider Structure; 510. Power Transmission Components; 600. Water Supply Pipe. Detailed Implementation

[0043] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0044] Reference Figures 1-3A chiller unit includes a main body 100 and a cooling tower 200. The cooling tower 200 is used to dissipate heat and cool the hot water in the condenser of the main body 100. Further, a water pipe 101 is provided between the outlet of the condenser and the inlet of the cooling tower 200. The hot water in the condenser flows into the cooling tower 200 through the water pipe 101. The outlet of the cooling tower 200 is connected to a water pump 102 through a water pipe 104. The water pump 102 is connected to the inlet of the condenser through a water pipe 103. After the hot water is cooled down in the cooling tower 200, it becomes cold water, which is then sent back to the condenser by the water pump 102.

[0045] Reference Figure 2 The cooling tower 200 includes a frame 300, on which a heat dissipation mechanism 400 and a cleaning mechanism 500 are installed. The heat dissipation mechanism 400 is used to dissipate heat and cool the hot water in the condenser, and the cleaning mechanism 500 is used to periodically clean the air inlet of the heat dissipation mechanism 400 to prevent dust from blocking the air inlet, affecting air flow, and thus affecting the heat dissipation and cooling results.

[0046] Example 1

[0047] Reference Figure 3 and Figure 4 The heat dissipation mechanism 400 includes an air guide ring shell 403 and an outer shell 405. The air guide ring shell 403 is a vertically arranged annular shell shape. The outer shell 405 is located inside the air guide ring shell 403. The upper and lower ends of the outer shell 405 are open, and the upper opening is connected to the air guide ring shell 403 through an arc tube.

[0048] The frame 300 is also equipped with a filter element 404 located outside the air guide ring shell 403. The filter element 404 uses existing filtration technology to filter the air, but it is in the shape of a ring, which will not be described in detail. The filter element 404 and the air guide ring shell 403 are connected through an air inlet.

[0049] Reference Figures 4-9 A water receiving ring 408 is coaxially installed at the upper opening of the outer casing 405. The upper end of the water receiving ring 408 is open and the lower end is closed. Several bottom holes 4081 are arranged in an array along the circumferential direction at the closed end. An outer water guide pipe 409 extends from the lower opening of the bottom hole 4081. The outer water guide pipe 409 is inclined towards the axis of the water receiving ring 408. The bottoms of the several outer water guide pipes 409 are connected by a connecting ring pipe 4091. A bottom ring pipe 1 4092 and a bottom ring pipe 2 4093 are arranged below the connecting ring pipe 4091. The bottom ring pipe 1 4092 is connected to the connecting ring pipe 4091. The bottom ring pipe 1 4092 is connected to the inlet end of the water pump 2 411. The bottom ring pipe 2 4093 is connected to the outlet end of the water pump 2 411.

[0050] The upper surface of the arc tube is provided with mounting holes, which are coaxial with the outer casing 405.

[0051] An annular upper spray pipe 407 is coaxially mounted in the mounting hole. The bottom of the upper spray pipe 407 is beveled, and the distance between the bottom of the upper spray pipe 407 and the axis increases from bottom to top. Several spray holes 4071 are arranged in a circular array along the bottom of the upper spray pipe 407. The orifice width of the spray holes 4071 is small, so the water sprayed through the spray holes 4071 forms a thin water curtain, which falls into the water receiving ring 408. Furthermore, on the frame 300... A main ring pipe 401 is installed, which is connected to water pipe 101. The main ring pipe 401 is connected to the upper spray pipe 407 through a branch pipe 402. The hot water from the condenser of the main body 100 can flow into the upper spray pipe 407 in sequence through water pipe 101, main ring pipe 401, and branch pipe 402, and then flow out through the spray hole 4071. When flowing out, the hot water flows into the water receiving ring 408 in the shape of a thin water curtain, and then flows into the bottom ring pipe 4092 along the outer water guide pipe 409.

[0052] The heat dissipation mechanism 400 also includes an inner water guide pipe 410 coaxially located inside the water receiving ring 408. The inner water guide pipe 410 is a hollow frustum shape, and the diameter of its horizontal cross-section decreases and then increases from bottom to top. Furthermore, the upper end of the inner water guide pipe 410 is open and coaxially disposed on the inner ring surface of the upper spray pipe 407. An upper ring pipe 412 is coaxially installed at the upper opening of the inner water guide pipe 410. The lower end of the inner water guide pipe 410 is closed and coaxially disposed on the inner ring surface of the connecting ring pipe 4091. Several fins 4101 are arranged in an array along the circumferential direction on the inner wall of the inner water guide pipe 410. The inner water guide pipe 410 is connected to the bottom ring pipe 4093.

[0053] The heat dissipation mechanism 400 also includes a nozzle 413 coaxially located in the inner water guide pipe 410. The nozzle 413 is connected to the upper ring pipe 412 through a pipe assembly 414, which consists of several pipes and will not be described in detail. Water in the bottom ring pipe 4092 is pumped into the bottom ring pipe 4093 by the water pump 411, and flows into the nozzle 413 in sequence through the inner water guide pipe 410, the upper ring pipe 412, and the pipe assembly 414. The water is then sprayed out through the nozzle 413. The nozzle 413 uses existing atomizing nozzle technology, so the sprayed part is water mist.

[0054] Reference Figure 4 and Figure 5The lower closed end of the inner water guide pipe 410 extends coaxially downward to form a fan housing, which houses a fan 406. The airflow generated by the fan 406 flows from bottom to top. Therefore, when the fan 406 is running, the outside air is filtered by the filter element 404 and then passes through the air inlet, air guide ring shell 403, and arc pipe into the outer shell 405. During this process, the airflow formed by the air flow passes through the area between two adjacent water curtains, and then through the area between two adjacent outer water guide pipes 409 before entering the outer shell 405 to dissipate heat from the water curtains and outer water guide pipes 409. Afterward, the airflow enters the inner water guide pipe 410 and flows upward, and the water mist sprayed by the nozzle 413 flows along with the airflow.

[0055] Reference Figure 3 , Figure 10 and Figure 11 The heat dissipation mechanism 400 also includes a water outlet pipe 415 and a water box 418. The water outlet pipe 415 includes an annular segment that is shaped like a ring and coaxially located around the air guide ring shell 403. There are two annular segments, namely an outer annular segment and an inner annular segment. The bottoms of the two annular segments are connected. The upper end of the outer annular segment is open. The upper end of the inner annular segment extends inward to a cylindrical segment. The lower end face of the cylindrical segment has a connecting hole. The lower opening of the connecting hole is connected to the upper end of the upper annular pipe 412. Fins 416 are provided inside the cylindrical segment. The water mist sprayed by the nozzle 413 flows with the airflow and eventually flows into the water outlet pipe 415. Then, the water mist adheres to the fins 416 and accumulates, gathering at the bottom of the annular segment. Further, refer to Figure 3 , Figure 4 and Figure 11 The upper surface of the water outlet pipe 415 is provided with fin three 419 and fan one 420. Fan one 420 is connected to the fan 406 via connecting shaft 421. When the fan 406 is running, fan one 420 rotates synchronously to dissipate heat from fin three 419, that is, to dissipate heat from the water outlet pipe 415, so that fin two 416 is in a low temperature state, which allows water mist to remain on fin two 416.

[0056] Water box 418 is located below water outlet pipe 415. A connecting pipe 417 extends downward from the connection point of the two annular sections of water outlet pipe 415. The bottom of connecting pipe 417 extends into water box 418 and is located below the water surface in water box 418. Water pipe 3 104 is connected to the bottom of water box 418.

[0057] Preferred, refer to Figure 3After prolonged use, water loss in the condenser is inevitable. Therefore, a water supply pipe 600 extends from the main ring pipe 401 and is equipped with a valve. When excessive water loss in the condenser affects the operation of the chiller unit, the valve can be opened to inject new water into the cooling tower 200 through the water supply pipe 600. The new water will flow into the condenser through the cooling tower 200 to achieve the purpose of water replenishment.

[0058] Working principle of Example 1:

[0059] Hot water from the condenser of the main body 100 flows sequentially through water pipe 101, main ring pipe 401, and branch pipe 402 into the upper spray pipe 407, and flows out through the spray hole 4071. When it flows out, the hot water flows into the water receiving ring 408 in the shape of a thin water curtain, and then flows into the bottom ring pipe 1 4092 along the outer guide pipe 409. Then, the water in the bottom ring pipe 1 4092 is pumped into the bottom ring pipe 2 4093 by water pump 2 411, and flows sequentially through the inner guide pipe 410, upper ring pipe 412, and pipe group 414 into the nozzle 413, and is sprayed out through the nozzle 413 in the form of water mist.

[0060] Meanwhile, the fan 406 operates, and the outside air, after being filtered by the filter element 404, enters the outer casing 405 through the air inlet, air guide ring shell 403, and arc tube in sequence. During this process, the airflow formed by the air flow passes through the area between two adjacent water curtains, and then through the area between two adjacent external water guide pipes 409 before entering the outer casing 405 to dissipate heat from the water curtains and external water guide pipes 409. Afterward, the airflow enters the inner water guide pipe 410 and flows upward. The water mist sprayed by the nozzle 413 flows along with the airflow. The airflow is discharged outward through the cylindrical section, inner annular section, and outer annular section of the outlet pipe 415, while the water mist adheres to the second fin 416. After accumulation, it gathers at the bottom of the annular section and flows into the water box 418 through the connecting pipe 417. Then, the water in the water box 418 is drawn back into the condenser by the water pump 102.

[0061] In the above process:

[0062] 1. The water medium is cooled by air in sequence in the shape of a water curtain, in the outer water pipe 409, in the inner water pipe 410, and in the state of water mist. In this process, on the one hand, the water curtain is relatively thin and has a large contact area with the air, resulting in better heat dissipation. The water curtain, the outer water pipe 409, and the inner water pipe 410 are all arranged at an angle, resulting in a longer flow trajectory of the water medium and better heat dissipation. The heat dissipation effect is even better when the water medium comes into contact with the air in the state of water mist. On the other hand, the water curtain, the outer water pipe 409, and the inner water pipe 410 are layered and distributed in a three-dimensional manner, which reduces the footprint.

[0063] 2. In the water medium heat dissipation process described in 1, the air passes through the water curtain from the outside. Therefore, when the power of the chiller unit is relatively small, the temperature of the hot water produced by the condenser is relatively low, and the fan 406 of the cooling tower 200 also operates at a relatively small power, generating relatively small air force and relatively small resistance to the water curtain. The water curtain can fall accurately into the water receiving ring 408. When the power of the chiller unit is relatively large, the temperature of the hot water produced by the condenser is relatively high, and the fan 406 of the cooling tower 200 also operates at a relatively large power, generating relatively large air force and relatively large resistance to the water curtain. The water curtain can still fall accurately into the water receiving ring 408, thus avoiding additional loss of the water medium.

[0064] It is important to note that the higher the operating power of the chiller unit, the faster the water circulation speed in the condenser. The initial velocity of the water curtain ejected through the nozzle 4071 is also greater. The further the water curtain lands on the horizontal plane of the water receiving ring 408 from the centerline of the ring 408, the more likely it is to overflow the ring 408, failing to return to the condenser and causing additional water loss. Conversely, in this solution, the higher the operating power of the chiller unit, the higher the operating power of the fan 406. This results in stronger airflow and greater resistance to the water curtain, ensuring it falls into the water receiving ring 408 and preventing additional water loss. Therefore, this solution balances heat dissipation for the water medium with preventing additional water loss.

[0065] 3. In this design, the diameter of the horizontal cross-section of the inner water pipe 410 decreases and then increases from bottom to top. The advantage of this is that, based on Bernoulli's principle, the airflow velocity is faster at the transition point between the increasing and decreasing velocity. Since the nozzle 413 is located above and close to the transition point, the water mist sprayed by the nozzle 413 is subjected to a great airflow impact at the first moment. The impact can break up the larger water droplets in the water mist, ensuring that all water mist can flow with the airflow and avoiding additional losses. It should be noted that the nozzle 413 uses existing atomizing nozzle technology to spray the water medium in the form of water mist. During the spraying process, the diameter of the water droplets in the water mist is different. Smaller diameter water droplets can flow with the airflow, but a small number of larger water droplets cannot flow with the airflow due to their greater gravity. Instead, they fall downwards and cannot return to the condenser, which will generate additional losses.

[0066] In addition, the impact of the turning point on the water mist can also make the water mist spread evenly in the airflow, improving the heat dissipation effect of the airflow on the water mist.

[0067] Example 2

[0068] In Example 1, after prolonged use, the outer surface of the filter element 404 in the cooling tower 200 will inevitably become covered with dust, affecting air intake and thus the heat dissipation effect. Therefore, referring to... Figure 2 A cleaning mechanism 500 is installed on the frame 300 to clean dust from the outer surface of the filter element 404.

[0069] Reference Figure 12 and Figure 13 The cleaning mechanism 500 includes a fixed shaft 501 coaxial with the filter element 404. The fixed shaft 501 can be set at the bottom of the water box 418 or installed on the frame 300. The outer circular surface of the fixed shaft 501 is rotatably mounted with a bracket 503, and the rotating shaft formed at the rotatable mounting point is driven to rotate by a motor 502 set on the frame 300.

[0070] A horizontally arranged drive shaft 505 is mounted on the bracket 503. A bevel gear set 504 is provided between the drive shaft 505 and the fixed shaft 501. When the motor 502 drives the bracket 503 to rotate, the drive shaft 505 rotates together with the bracket 503 around the axis of the fixed shaft 501. At the same time, with the cooperation of the bevel gear set 504, the drive shaft 505 will also rotate around its own axis.

[0071] A cleaning frame 506 is slidably mounted on the bracket 503 along the vertical direction. The cleaning frame 506 includes a horizontal tube. A curved tube is provided at the highest point of the outer circle of the horizontal tube, with the upper opening of the curved tube facing the outer circle of the filter element 404. A cleaning component 507 is provided at the upper opening of the curved tube. Further, the cleaning component 507 includes a cleaning disc. A cleaning column is provided on the end face of the cleaning disc. The cleaning column includes several cleaning brushes arranged in an array on the cleaning disc. The array direction of the cleaning brushes in the same group of cleaning columns is arranged at an angle to the outer circle of the cleaning disc. Several cleaning brushes are arranged in an array along the circumference of the cleaning disc. The cleaning brushes are in contact with the outer circle of the filter element 404. When the cleaning disc rotates, the dust of the filter element 404 is cleaned by the cleaning brushes. Based on the array distribution of the cleaning brushes in the same group of cleaning columns, the dust that is cleaned can be drawn away and not spread outward, but spread towards the axis of the cleaning disc.

[0072] A fan 2 508 is installed at the inlet of the horizontal pipe. When the cleaning disc rotates, the fan 2 508 also rotates, which will pull away the dust that has been swept down and keep it away from the filter element 404.

[0073] The drive shaft 505, the second fan 508, and the cleaning component 507 are connected by a power transmission component 510. The power generated by the rotation of the drive shaft 505 is divided into two streams by the power transmission component 510. One stream is transmitted to the second fan 508, and the other stream is transmitted to the cleaning component 507.

[0074] A crank-slider structure 509 is provided between the sweeping frame 506 and the drive shaft 505. Specifically, a crank is provided at the end of the drive shaft 505, and a connecting rod is hinged between the crank and the sweeping frame 506, with the hinge axis parallel to the drive shaft 505. When the drive shaft 505 rotates, it drives the sweeping component 507 and the fan 508 to rotate, causing a sweeping action. During this action, the crank-slider structure 509 drives the sweeping frame 506 to move up and down reciprocally. In this way, the sweeping component 507 can rotate and move up and down reciprocally at the same time, while simultaneously moving around the filter. The rotation of the axis of filter core 404, in conjunction with fan 508, can clean the dust on the outer surface of filter core 404. Preferably, a speed-increasing structure, such as a speed-increasing gearbox or speed-increasing gear set, is provided between drive shaft 505 and crank. The purpose is to increase the up-and-down reciprocating frequency of cleaning component 507 and improve the cleaning effect. If the up-and-down reciprocating frequency of cleaning component 507 is slow, the movement trajectory of cleaning component 507 will be wavy, and a large area of ​​dead corners on the outer surface of filter core 404 will easily remain uncleaned.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A water chiller unit, comprising a main body (100) and a cooling tower (200), characterized in that, A water pipe (101) is provided between the condenser outlet of the main body (100) and the inlet of the cooling tower (200). A water pipe (104) is provided at the outlet of the cooling tower (200). A water pump (102) is provided at the end of the water pipe (104). The water pump (102) is connected to the inlet of the condenser through a water pipe (103). The cooling tower (200) includes a frame (300), on which a heat dissipation mechanism (400) is installed. The heat dissipation mechanism (400) includes an air guide ring shell (403) and an outer shell (405). The air guide ring shell (403) is a vertically arranged annular shell shape. The outer shell (405) is located inside the air guide ring shell (403). The upper and lower ends of the outer shell (405) are open, and the upper opening is connected to the air guide ring shell (403) through an arc tube. A filter element (404) located outside the air guide ring shell (403) is also installed on the frame (300). The filter element (404) is connected to the air guide ring shell (403) through an air inlet. A water receiving ring (408) is coaxially installed at the upper opening of the outer shell (405). The upper surface of the arc tube is provided with a mounting hole coaxial with the outer shell (405). An upper spray pipe (407) in the shape of a ring tube is coaxially installed in the mounting hole. Several spray holes (4071) are arranged in a circular array at the bottom of the upper spray pipe (407). The water sprayed through the spray holes (4071) is in the shape of a water curtain and the water curtain can fall into the water receiving ring (408). The upper spray pipe (407) is connected to the water pipe (101). The upper end of the water receiving ring (408) is open and the lower end is closed. Several bottom holes (4081) are arranged in an array along the circumferential direction at the closed end. An external water guide pipe (409) extends from the lower opening of the bottom hole (4081). The external water guide pipe (409) is inclined towards the axis of the water receiving ring (408). The bottoms of several external water guide pipes (409) are connected by a connecting ring pipe (4091). Bottom ring pipe one (4092) and bottom ring pipe two (4093) are arranged below the connecting ring pipe (4091). Bottom ring pipe one (4092) is connected to the connecting ring pipe (4091). Bottom ring pipe one (4092) is connected to the inlet end of water pump two (411) set on the frame (300). Bottom ring pipe two (4093) is connected to the outlet end of water pump two (411). The heat dissipation mechanism (400) also includes an inner water guide pipe (410) located coaxially inside the water receiving ring (408), and the inner water guide pipe (410) is connected to the bottom ring pipe (4093); The upper end of the inner water guide pipe (410) is open and coaxially disposed on the inner ring surface of the upper spray pipe (407), and the lower end of the inner water guide pipe (410) is closed and coaxially disposed on the inner ring surface of the connecting ring pipe (4091). An upper ring pipe (412) is coaxially installed at the upper opening of the inner water guide pipe (410). The heat dissipation mechanism (400) also includes a nozzle (413) coaxially located in the inner water guide pipe (410). The nozzle (413) is connected to the upper ring pipe (412) through a pipe assembly (414). The lower closed end of the inner water guide pipe (410) extends coaxially downward with a fan housing, and a fan (406) is installed inside the fan housing.

2. A chiller unit according to claim 1, characterized in that, The inner water guide pipe (410) is a hollow frustum shape, and the inner wall of the inner water guide pipe (410) is arranged with several fins (4101) in an array along the circumferential direction.

3. A chiller unit according to claim 1, characterized in that, The diameter of the horizontal cross-section of the inner water pipe (410) decreases and then increases from bottom to top.

4. A chiller unit according to claim 1, characterized in that, The heat dissipation mechanism (400) also includes a water outlet pipe (415) and a water box (418). The water outlet pipe (415) includes an annular segment that is in the shape of a ring pipe and coaxially located around the air guide ring shell (403). There are two annular segments, namely an outer annular segment and an inner annular segment. The bottoms of the two annular segments are connected. The upper end of the outer annular segment is open. The upper end of the inner annular segment extends inward to form a cylindrical segment. A connecting hole is opened on the lower end face of the cylindrical segment. The lower opening of the connecting hole is connected to the upper end of the upper annular pipe (412). A second fin (416) is provided inside the cylindrical segment. The water box (418) is located below the water outlet pipe (415). The connection point of the two annular sections of the water outlet pipe (415) extends downward to the connecting pipe (417). The bottom of the connecting pipe (417) extends into the water box (418) and is located below the water surface in the water box (418). The third water pipe (104) is connected to the bottom of the water box (418).

5. A chiller unit according to claim 4, characterized in that, The upper surface of the water outlet pipe (415) is provided with fin three (419) and fan one (420), and fan one (420) and blower (406) are connected by a connecting shaft (421).

6. A chiller unit according to claim 1, characterized in that, A cleaning mechanism (500) for periodically cleaning the filter element (404) is installed on the frame (300).

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