A humidifying type plate air cooler

Abstract

The application discloses a humidifying type plate air cooler, which comprises a frame, a wind circulation mechanism and a water circulation mechanism.The frame serves as the skeleton of the device.The wind circulation mechanism comprises an air inlet installed on the side wall of the frame, and the air inlet is communicated with an air outlet installed on the top end of the frame.A heat exchange plate bundle is installed in the air inlet and communicated with the air outlet.The water circulation mechanism comprises a water storage tank installed on the bottom of the frame, and the water storage tank is communicated with a spraying assembly, and the outlet of the spraying assembly is correspondingly arranged on the heat exchange plate bundle.The application solves the problems of the original finned tube surface easy to scale and difficult to clean, influences the process cooling effect of the device and the service life of the device, prolongs the service life of the device, reduces the air side resistance and the energy consumption of the device, and greatly reduces the operation cost and the overall investment cost of the device.

Description

Technical Field

[0001] This invention belongs to the field of evaporative cooler technology, and particularly relates to a humidifying plate air cooler. Background Technology

[0002] Currently, the central heat exchange element of humidifying air coolers used in the market is mainly finned tubes. Due to the small gap between adjacent fins, water bridges rather than water films are easily formed between the fins when spraying water onto their surface. Furthermore, as the equipment operates, dirt easily accumulates in the area between the fins. Both water bridges and dirt reduce the heat transfer efficiency of the equipment. Because there are many fins and the gaps are small, the dirt is not easy to remove. Over time, the equipment's process performance deteriorates significantly, resulting in a short effective service life and high costs. In addition, the fins on the outer surface of the finned tube are densely distributed, and the outside of the tube is a channel for air and sprayed water. The narrow channel results in high wind resistance, which increases the power loss of the fan motor and the energy consumption of the equipment.

[0003] Therefore, there is an urgent need to design a humidifying plate air cooler to solve the above-mentioned technical problems. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention proposes a humidifying plate air cooler.

[0005] To achieve the above objectives, the present invention provides a humidifying plate air cooler, comprising:

[0006] The frame serves as the skeleton of the device;

[0007] An air circulation mechanism includes an air inlet installed on the side wall of the frame, which communicates with an air outlet installed at the top of the frame; a heat exchange plate bundle is installed inside the air inlet, which communicates with the air outlet; the heat exchange plate bundle includes a plurality of plate tubes arranged in an array, which are fixedly installed inside the air inlet; a heat exchange channel is formed between adjacent plate tubes; the inlet of each plate tube corresponds to the air inlet, and the outlet of each plate tube corresponds to the air outlet; a corrugated plate is fixedly attached to the surface of each plate tube.

[0008] A water circulation mechanism includes a water storage tank installed at the bottom of the frame, the water storage tank being connected to a spray assembly, and the outlet of the spray assembly being correspondingly arranged with respect to the heat exchange plate bundle.

[0009] Preferably, a fan is installed inside the air outlet, with the inlet of the fan facing the heat exchange plate bundle and the outlet of the fan facing the outlet of the air outlet.

[0010] Preferably, the air outlet has a square inlet and a circular outlet with a smooth transition in the middle.

[0011] Preferably, the spray assembly includes a spray pump, the inlet of which is connected to the water storage tank, and the outlet of which is connected to a spray pipe. The spray pipe is arranged around the air inlet, and a plurality of spray nozzles facing the plate tube are installed on the spray pipe, with the outlets of the spray nozzles facing the plate tube.

[0012] Preferably, the water storage tank includes a water storage chamber and a return water chamber, the inlet of the spray pump is connected to the water storage chamber, the return water chamber is connected to the air outlet; the return water chamber is connected to the inlet of the filter, and the outlet of the filter is connected to the water storage chamber.

[0013] Preferably, the air inlet is equipped with a water collector, which is connected to the return water chamber.

[0014] Preferably, the bottom of the return water chamber is inclined, and the return water port communicating with the filter inlet is located at the bottom of the return water chamber.

[0015] Preferably, an inspection door is installed on the frame, and the inspection door is arranged corresponding to the heat exchange plate bundle.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects: In use, dry, cold air is drawn into the heat exchange plate bundle through the air inlet, while water in the water storage tank is atomized and sprayed onto the heat exchange plate bundle through the spray assembly. This water exchanges heat with the dry, cold air inside the heat exchange plate bundle, cooling it down. The water then returns to the water storage tank, while the dry, cold air absorbs heat and becomes humid, hot air, which is then discharged from the air outlet. This achieves cooling of the water in the water storage tank, facilitating its use as circulating cooling water. Compared with the original finned tube bundle, the heat exchange plate bundle allows for easier adjustment of the internal space to a suitable size, significantly reducing the flow resistance of the air and sprayed water heat exchange channels. This solves the problems of easy scaling and difficulty in cleaning on the surface of finned tubes, which affects the cooling effect and service life of the equipment. Furthermore, the humidification of the heat exchange plate bundle is changed to... The spray humidification method of the spray assembly is consistent with the airflow direction. The airflow resistance on the air side is much lower than that of the original finned tube type, greatly reducing the power consumption of the fan motor and saving equipment operating costs. Existing finned tubes are prone to water bridges between fins during spraying, and the middle area is prone to scaling and difficult to clean, which reduces the heat transfer efficiency of the equipment and significantly reduces the process performance of the equipment. In this application, the finned tubes are replaced with plate tubes. Several plate tubes are arranged side by side to form a heat exchange plate bundle, and the air passes through the heat exchange plate bundle. The distance between the plate tubes can be easily adjusted to an appropriate distance to avoid the formation of contact points. This makes the plate tube surface less prone to scaling and easy to clean, while reducing the flow resistance on the air side outside the tube. The outer wall of the plate tube is fixed with a corrugated plate, which can increase the surface heat exchange area and allow the internal fluid to flow turbulently, thereby improving the heat exchange efficiency. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the humidifying plate air cooler structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the heat exchanger plate bundle structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of a finned tube in the prior art;

[0021] Figure 4 This is a schematic diagram of the water storage tank in Embodiment 2 of the present invention;

[0022] Figure 5 for Figure 4 A magnified view of part A in the image;

[0023] Figure 6 for Figure 4 A magnified view of part B in the image;

[0024] Figure 7 for Figure 4 A magnified view of part C;

[0025] In the diagram: 1. Frame; 2. Air circulation mechanism; 3. Water circulation mechanism; 11. Inspection door; 21. Air inlet; 22. Air outlet; 23. Heat exchange plate bundle; 24. Fan; 25. Water collector; 26. Plate tube; 27. Heat exchange passage; 28. Corrugated plate; 29. ​​Finned tube; 31. Water storage tank; 32. Spray pump; 33. Spray pipe; 34. Spray nozzle; 35. Water storage chamber; 36. Return water chamber; 37. 38. Filter; 39. Water flow channel; 30. Water collection hopper; 310. Floating sealing plate; 311. Positioning rod; 312. Fixing frame; 313. One-way plate; 314. Emergency water inlet; 315. Emergency filter screen; 316. Support frame; 317. Emergency ring; 318. Connecting rod; 319. Actuating cylinder; 320. Actuating spring; 321. Abutment plate; 322. Filter basket; 323. Emergency spring. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] Reference Figure 1-3 As shown, this embodiment provides a humidifying plate air cooler, including:

[0030] Frame 1, which serves as the skeleton of the device;

[0031] The air circulation mechanism 2 includes an air inlet 21 installed on the side wall of the frame 1, which is connected to an air outlet 22 installed at the top of the frame 1. A heat exchange plate bundle 23 is installed inside the air inlet 21 and is connected to the air outlet 22. The heat exchange plate bundle 23 includes a plurality of plate tubes 26 arranged in an array, which are fixedly installed inside the air inlet 21. A heat exchange channel 27 is formed between adjacent plate tubes 26. The inlet of the plate tube 26 is corresponding to the air inlet 21, and the outlet of the plate tube 26 is corresponding to the air outlet 22. A corrugated plate 28 is fixedly attached to the surface of the plate tube 26.

[0032] The water circulation mechanism 3 includes a water storage tank 31 installed at the bottom of the frame 1. The water storage tank 31 is connected to a spray assembly, and the outlet of the spray assembly is correspondingly set with the heat exchange plate bundle 23.

[0033] In operation, this invention draws in dry, cold air through the air inlet into the heat exchange plate bundle 23. Simultaneously, water from the water storage tank 31 is atomized and sprayed onto the heat exchange plate bundle 23 via a spray assembly, exchanging heat with the dry, cold air inside the heat exchange plate bundle 23 to cool it down. The water then returns to the water storage tank 31, while the dry, cold air absorbs heat and becomes humid, hot air, which is then discharged from the air outlet 22. This achieves cooling of the water in the water storage tank 31, facilitating its use as circulating cooling water. Compared to the original finned tube bundle, the heat exchange plate bundle 23 allows for easier adjustment of the internal space to a suitable size, significantly reducing the flow resistance of the heat exchange channels 27 between the air and the sprayed water. This solves the problems of easy scaling and difficult cleaning of the finned tube 29 surface, which affects the cooling effect and service life of the equipment. Furthermore, the humidification of the heat exchange plate bundle 23 is changed to spray humidification via a spray assembly. The form of the plate tube 26 is consistent with the airflow direction, and the airflow resistance on the air side is much smaller than that of the original finned tube type. The power consumption of the fan motor is greatly reduced, saving equipment operating costs. The existing finned tube 29 has problems such as water bridges easily forming between the fins during spraying, and scale easily forming in the middle area that is difficult to clean, which reduces the heat transfer efficiency of the equipment and significantly reduces the process performance of the equipment. In this application, the finned tube 29 is replaced with plate tube 26, and several plate tubes 26 are arranged side by side to form a heat exchange plate bundle 23, through which air passes. The distance between the plate tubes 26 can be easily adjusted to an appropriate distance to avoid the formation of contact points. In this way, the surface of the plate tube 26 is not easy to scale and is easy to clean, while reducing the flow resistance on the air side outside the tube. The outer wall of the plate tube 26 is fixed with a corrugated plate 28, which can increase the surface heat exchange area and allow the internal fluid to flow turbulently, thereby improving the heat exchange efficiency.

[0034] Further optimization involves installing a fan 24 inside the air outlet 22. The inlet of the fan 24 faces the heat exchange plate bundle 23, and the outlet of the fan 24 faces the outlet of the air outlet 22. The fan 24 is a direct-drive induced draft fan (refer to the YFS-1380 type fan), which has high transmission efficiency. It serves as the power source for the airflow within the air circulation mechanism 2, drawing in dry, cool air from the air inlet 21 and expelling the humid, hot air after heat exchange from the air outlet 22. Its usage and control methods are existing technologies and will not be elaborated here.

[0035] The design was further optimized so that the inlet of the air outlet 22 is square and the outlet of the air outlet 22 is round, with a smooth transition in the middle; the air outlet 22 is set as a square-round gradient, with a square inlet and a round outlet, which is more conducive to the timely discharge of the humid and hot air after absorbing heat.

[0036] Furthermore, the present invention relies on the fan 24 inside the air outlet 22 to achieve air intake, and does not set the air intake power at the inlet of the plate tube 26. At the same time, the air inlet reduces the louvered grille, reduces the wind resistance of the air intake, and reduces some energy consumption.

[0037] Furthermore, the plate tube 26 of the present invention is inserted into the frame 1, and can be directly disassembled for cleaning and maintenance.

[0038] The solution is further optimized. The spray assembly includes a spray pump 32, the inlet of which is connected to a water storage tank 31, and the outlet of which is connected to a spray pipe 33. The spray pipe 33 is arranged around the air inlet 21, and several spray nozzles 34 facing the plate tube 26 are installed on the spray pipe 33. The outlet of the spray nozzles 34 faces the plate tube 26. The spray pump 32 pumps water from the water storage tank 31 into the spray pipe 33, and then atomizes it through the spray nozzles 34 before spraying it into the inlet of the heat exchange plate bundle 23. This changes the traditional humidification to spraying at the air inlet, reducing the air resistance drop outside the pipe, thereby reducing the energy consumption of the fan 24 and achieving energy saving. The water mist contacts the corrugated plate 28 on the surface of the plate tube 26 for heat exchange, transferring heat to the dry and cold air, thereby achieving cooling. The cooled water mist flows back into the water storage tank 31, realizing the recycling of the cooling water in the water storage tank 31.

[0039] Further optimizing the design, the water storage tank 31 includes a water storage chamber 35 and a return water chamber 36. The inlet of the spray pump 32 is connected to the water storage chamber 35, and the return water chamber 36 is connected to the air outlet 22. The return water chamber 36 is connected to the inlet of the filter 37, and the outlet of the filter 37 is connected to the water storage chamber 35. The water storage tank 31 is divided into a water storage chamber 35 and a return water chamber 36. The water storage chamber 35 stores high-temperature water that has undergone cooling. The spray pump 32 atomizes the high-temperature water and sprays it onto the heat exchange plate bundle 23 for heat exchange and cooling. The cooled water enters the return water chamber 36, where the low-temperature water flows out for cooling, absorbs heat and heats up to become high-temperature water. After being filtered by the filter 37, it returns to the water storage chamber 35, realizing the circulation of cooling water.

[0040] Further optimization involves installing a water collector 25 at the air inlet 21, which is connected to the return water chamber 36. The water collector 25, made of PVC, is installed inside the air outlet 22 and effectively collects water droplets from the humid air into the return water chamber 36 below, reducing cooling water loss and minimizing the consumption of spray cooling water. The working principle of the water collector 25 is existing technology and will not be elaborated here.

[0041] Furthermore, this device uses a water mist spraying heat exchange method, which saves more water compared to the traditional method of spraying liquid water. At the same time, the surface of the plate tube 26 will not be soaked in water for a long time, and no dirt will form on the surface of the plate tube 26. This reduces the generation of dirt, improves the heat transfer efficiency, and achieves energy saving. It also reduces the corrosion of the plate tube 26 by dirt and improves its service life.

[0042] Further optimization involves tilting the bottom of the return water chamber 36, with the return water inlet connected to the filter 37 located at the bottom of the return water chamber 36. This tilted bottom and low-position placement of the return water inlet reduces residual cooling water after cooling. Simultaneously, the filter 37 filters the circulating cooling water, ensuring that the sprayed cooling water in the water storage chamber 35 remains clean during equipment operation. This helps to delay the occurrence of reduced heat transfer efficiency due to scaling on the outer surface of the plate tube 26.

[0043] Further optimization of the design involves installing an inspection door 11 on frame 1, which corresponds to the heat exchange plate bundle 23. Frame 1 is made of galvanized or aluminized zinc sheet, which is folded into various required structures using sheet metal technology. This solves the problem of profiles being prone to rusting and unsightly, while also enabling standardized production of parts. The inspection door 11 facilitates access to the equipment for cleaning and maintenance of the heat exchange plate bundle 23.

[0044] This invention changes the structure of the central heat exchange element, replacing the original finned tube bundle with an energy-saving plate bundle, and adjusts the net distance between adjacent plate tubes 26 to a suitable size. This significantly reduces the flow resistance of the air and spray water heat exchange channels 27 between the plate tubes 26, solving the problems of easy scaling and difficult cleaning on the surface of the original finned tubes 29, which affected the cooling effect and service life of the equipment. At the same time, the plate tubes 26 are changed from surface humidification to spraying, which is consistent with the air flow direction. The flow resistance on the air side is much lower than that of the original finned tube type, and the power consumption of the fan 24 motor is greatly reduced, saving equipment operating costs.

[0045] Example 2

[0046] See attached document Figure 4-7 The difference between this embodiment and embodiment one is that the water circulation mechanism 3 in this embodiment includes a return water cavity 36 located at the bottom of the frame 1, and a water storage cavity 35 located above the return water cavity 36. The water storage cavity 35 is annular, with its outer wall fixed to the frame 1, and a water flow channel 38 communicating with the return water cavity 36 is opened in the center. The top pipe of the water storage cavity 35 is inclined towards the water flow channel 38 to form a water collection bucket 39. The cooled water flow is collected in the water collection bucket 39 and then enters the return water cavity 36 through the water flow channel 38.

[0047] Several fixed frames 312 are fixedly connected inside the return water chamber 36. Positioning rods 311 are longitudinally slidably connected between the fixed frames 312. The bottom end of the positioning rods 311 extends into the return water chamber 36 and is fixedly connected to a floating sealing plate 310. The floating sealing plate 310 always floats on the water surface and is detachably connected to the water flow channel 38. When the water in the return water chamber 36 increases, the floating sealing plate 310 rises accordingly until it blocks the water flow channel 38, preventing water from entering the return water chamber 36 and preventing the return water chamber 36 from overflowing. It has an automatic sealing function. A one-way plate 313 is fixedly installed at the bottom of the fixed frame 312. The one-way plate 313 is made of a flexible material such as rubber. Its middle part is fixedly connected to the bottom of the fixed frame 312, while its sides are in a free state. When water flows from top to bottom, the water pressure deforms the one-way plate 313, which does not obstruct the water flow. When water flows from bottom to top, the water pressure presses down on the one-way plate 313, blocking the fixed frame 312 and preventing water from flowing back.

[0048] An emergency water inlet 314, coaxially aligned with the water flow channel 38, is provided at the top of the water storage chamber 35 near the water flow channel 38. The emergency water inlet 314 is annular, and an emergency filter screen 315 is fixedly installed inside it. A support frame 316 is also fixedly connected inside the emergency water inlet 314. An emergency ring 317 is fixedly connected to the end of the support frame 316 away from the emergency filter screen via several emergency springs 323. The emergency ring 317 is embedded in the emergency water inlet 314 and sealed to the emergency water inlet 314. Several connecting rods 318 are fixedly connected to the top of the emergency ring 317 towards the center. Actuating cylinders 319, corresponding to the fixed rods, are fixedly connected between the connecting rods 318. The bottom end of the actuating cylinder 319 is open and detachably connected to the top of the fixed rod. An actuating spring 320 is fixedly connected to the top of the inner cavity of the actuating cylinder 319, and a contact plate is fixedly connected to the bottom end of the actuating spring 320. The contact plate and the top of the fixed rod are detachably connected. When the return water chamber 36 is full and the fixed rod rises, the water flow channel 38 cannot drain water. In order to prevent the return water in the water collection hopper 39 from accumulating and to prevent the water flow from not circulating, the fixed rod pushes the actuating cylinder 319 through the abutment plate 321 and the actuating spring 320, and then pulls the emergency ring 317 out of the emergency water inlet 314 through the connecting rod 318, so that the water passes through the emergency water inlet 314 and is filtered by the economic filter screen and directly enters the water storage chamber 35 to realize the emergency circulation of the water flow until the water in the return water chamber is emptied, the fixed rod sinks, and the emergency spring 323 rebounds and drives the emergency ring 317 to block the emergency water inlet 314 again, so that the water flow can circulate normally again. This design can ensure the normal operation of the device when external equipment such as filters and water pumps are under maintenance or malfunction, and improve the fault tolerance of the device.

[0049] The filter 37 is equipped with a filter basket 322 for easy cleaning and maintenance.

[0050] Compared to Embodiment 1, this embodiment has a more rational cooling water circulation, more timely feedback and handling of emergencies, and an added emergency response plan, thus improving the overall fault tolerance of the device.

[0051] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0052] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A humidifying plate air cooler, characterized in that, include: The frame serves as the skeleton of the device. The air circulation mechanism includes an air inlet installed on the side wall of the frame, which is connected to an air outlet installed at the top of the frame; a heat exchange plate bundle is installed inside the air inlet, which is connected to the air outlet; the heat exchange plate bundle includes several arrayed plate tubes, which are fixedly installed inside the air inlet; a heat exchange channel is formed between adjacent plate tubes; the inlets of the plate tubes are corresponding to the air inlet, and the outlets of the plate tubes are corresponding to the air outlet; a corrugated plate is fixedly attached to the surface of the plate tubes. The water circulation mechanism includes a water storage tank installed at the bottom of the frame, the water storage tank is connected to a spray assembly, and the outlet of the spray assembly is correspondingly set with the heat exchange plate bundle. The water storage tank includes a water storage chamber and a water return chamber. The water storage chamber is located above the water return chamber, and a water flow channel communicating with the water return chamber is opened in the center of the water storage chamber. The top of the water storage chamber is inclined towards the water flow channel to form a water collection hopper. Several fixed frames are fixedly connected inside the water return chamber. Positioning rods are slidably connected between the fixed frames in the longitudinal direction. The bottom end of the positioning rods extends into the water return chamber and is fixedly connected to a floating sealing plate. The floating sealing plate floats on the water surface and is detachably connected to the water flow channel. A one-way plate is fixedly installed at the bottom of the fixed frame. The middle part of the one-way plate is fixedly connected to the bottom of the fixed frame, and the perimeter of the one-way plate is in a free state. An emergency water inlet, coaxially aligned with the water flow channel, is located at the top of the water storage chamber near the water flow channel. An emergency filter screen is fixedly installed inside the emergency water inlet. A support frame is also fixedly connected inside the emergency water inlet. An emergency ring is fixedly connected to the end of the support frame away from the emergency filter screen via several emergency springs. The emergency ring is embedded in the emergency water inlet and sealed to the emergency water inlet. Several connecting rods are fixed to the top of the emergency ring towards the center. An actuating cylinder corresponding to the positioning rod is fixed between the connecting rods. The bottom end of the actuating cylinder is open and detachably connected to the top of the positioning rod. An actuating spring is fixed to the top of the inner cavity of the actuating cylinder. An abutment plate is fixed to the bottom end of the actuating spring and detachably connected to the top of the positioning rod.

2. The humidifying plate air cooler according to claim 1, characterized in that: A fan is installed inside the air outlet, with the fan inlet facing the heat exchange plate bundle and the fan outlet facing the air outlet outlet.

3. The humidifying plate air cooler according to claim 1, characterized in that: The air outlet has a square inlet and a round outlet with a smooth transition in the middle.

4. The humidifying plate air cooler according to claim 1, characterized in that: The spray assembly includes a spray pump, the inlet of which is connected to a water storage tank, and the outlet of which is connected to a spray pipe. The spray pipe is arranged around the air inlet, and several spray nozzles facing the plate pipe are installed on the spray pipe, with the outlet of the spray nozzles facing the plate pipe.

5. The humidifying plate air cooler according to claim 4, characterized in that: The inlet of the spray pump is connected to the water storage chamber, and the return water chamber is connected to the air outlet; the return water chamber is connected to the inlet of the filter, and the outlet of the filter is connected to the water storage chamber.

6. The humidifying plate air cooler according to claim 5, characterized in that: A water collector is installed at the air inlet, and the water collector is connected to the return water chamber.

7. The humidifying plate air cooler according to claim 5, characterized in that: The bottom of the return water chamber is inclined, and the return water inlet that connects to the filter inlet is located at the bottom of the return water chamber.

8. The humidifying plate air cooler according to claim 1, characterized in that: The frame is equipped with an inspection door, which is correspondingly set with the heat exchange plate bundle.

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