Indirect evaporative cooling water unit special for severe cold area

Abstract

The utility model provides a kind of indirect evaporative water chiller special for severe cold area, including evaporative water chiller box, filler, fan, water inlet pipe, three-way valve, branch water pipe, first water distributor, second water distributor, baffle and water tank;Three-way valve is set on water inlet pipe and realizes intercommunication with first water distributor and second water distributor, realizes water route intelligent switching, two groups of second water distributor are oppositely arranged, so that ice crystal that water flow is generated due to low temperature airflow is concentrated and attached on middle baffle, and natural gravity is settled in water tank, without affecting other components, by the combination of first water distributor, second water distributor and three-way electric valve, and the flexible control of fan forward and reverse, filler collapse and air inlet and water tank icing are effectively avoided;And low cost: only a small amount of components can achieve freeze-proof effect, while the running time can be extended, and the equipment downtime caused by component icing is reduced.

Description

Technical Field

[0001] This utility model relates to the field of evaporative refrigeration equipment, and in particular to an indirect evaporative chiller unit specifically designed for extremely cold regions. Background Technology

[0002] Existing indirect evaporative chiller units can generally adapt to normal environments. However, in extremely cold regions, due to the extremely low winter temperatures, the packing material, air inlets, and water tanks lack effective antifreeze measures, making them prone to freezing. This can lead to packing material collapse, and freezing of the air inlets and water tanks, affecting the normal operation of the equipment. Currently, there is no systematic solution for antifreeze measures, which include using short-term fan reversal, using a dry cooler (ethylene glycol), or using water tank heating. However, these measures have the following problems:

[0003] 1. Short-term reverse rotation of the fan: When the temperature is too low, the air inlet cannot be de-iced in time, affecting the normal operation of the equipment;

[0004] 2. Dry cooler (ethylene glycol): Requires an additional ethylene glycol system, resulting in a large initial investment and relatively high maintenance requirements;

[0005] 3. Water tank heating: When the temperature is too low, the packing will freeze and collapse, and the air inlet will freeze. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the aforementioned problems in the prior art, this utility model provides a dedicated indirect evaporative chiller unit for extremely cold regions.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0010] An indirect evaporative chiller unit specifically designed for extremely cold regions includes an evaporative chiller unit housing, packing material, fan, inlet pipe, precooling device, three-way valve, branch pipe, first water distributor, second water distributor, partition plate, and water tank.

[0011] The packing material is installed inside the evaporative chiller unit housing;

[0012] The precooling device is installed inside the evaporative chiller unit;

[0013] The first water distributor is installed inside the evaporative chiller unit and is positioned above the packing material;

[0014] The water tank is located inside the evaporative chiller unit and below the packing material;

[0015] The fan is installed on the top of the evaporative chiller unit housing;

[0016] The water inlet pipe is connected to the first water distributor, and the three-way valve is installed on the water inlet pipe;

[0017] The branch water pipe is connected to the three-way valve, and two sets of the second water distributors are installed on the branch water pipe, with the spray nozzles of the two sets of the second water distributors arranged opposite to each other.

[0018] The partition is installed inside the water tank, dividing the water tank into two water storage units, and is located between the two sets of the second water distributors.

[0019] Preferably, a drain pipe is connected to the water inlet pipe, and an electric valve is installed on the drain pipe.

[0020] Preferably, four sets of fans are arranged in a rectangular array on the top of the evaporative chiller unit housing. Each pair of adjacent sets of fans constitutes an evaporation module, and the two sets of evaporation modules are not completely corresponding to the water storage unit.

[0021] Preferably, the fans in each group of evaporation modules rotate in both forward and reverse directions simultaneously.

[0022] Preferably, the filler is PVC filler.

[0023] (III) Beneficial Effects

[0024] The beneficial effects of this utility model are as follows: By adopting the above technical solution, the three-way valve installed on the water inlet pipe enables interconnection with the first and second water distributors, realizing intelligent switching of the water circuit. The two sets of second water distributors are arranged opposite each other, so that the ice crystals generated by the low temperature airflow are concentrated on the middle partition and naturally settle into the water tank without affecting other components. Through the combination of the two sets of water distributors and the three-way electric valve, as well as the flexible control of the forward and reverse rotation of the fan, the packing collapse and the freezing of the air inlet and water tank are effectively avoided. Moreover, the cost is low, and only a few additional components are needed to achieve the antifreeze effect. At the same time, the operating time can be extended, and the equipment downtime caused by the freezing of components is reduced. Attached Figure Description

[0025] Figure 1 A schematic diagram of a special indirect evaporative chiller unit for extremely cold regions;

[0026] Figure 2 A top view schematic diagram of a special indirect evaporative chiller unit for extremely cold regions;

[0027] Figure 3 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the third embodiment of the present utility model;

[0030] Figure 6 This is a structural schematic diagram of the fourth embodiment of the present utility model.

[0031] [Explanation of Labels in the Attached Image]

[0032] 1. Evaporative chiller unit housing;

[0033] 2. Packing material;

[0034] 3. Fan;

[0035] 4. Water collector;

[0036] 5. First water distributor;

[0037] 6. Water inlet pipe;

[0038] 7. Electric valve;

[0039] 8. Drainage pipe;

[0040] 9. Three-way valve;

[0041] 10. Pre-cooling device;

[0042] 11. Partition;

[0043] 12. Water tank;

[0044] 13. Second water distributor;

[0045] 14. Branch water pipes. Detailed Implementation

[0046] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Please refer to Figures 1 to 2 The first embodiment of this utility model:

[0048] An indirect evaporative chiller unit specifically designed for extremely cold regions includes an evaporative chiller unit housing 1, packing material 2, fan 3, inlet pipe 6, three-way valve 9, branch pipe 14, first water distributor 5, second water distributor 13, precooling device, partition 11, and water tank 12.

[0049] The packing material 2 is installed inside the housing 1 of the evaporative chiller unit;

[0050] The precooling device 10 is installed inside the evaporative chiller unit housing 1;

[0051] The first water distributor 5 is installed inside the evaporative chiller unit housing 1 and is positioned above the packing material 2;

[0052] The water tank 12 is located inside the evaporative chiller unit housing 1 and below the packing material 2;

[0053] The fan 3 is installed on top of the evaporative chiller unit housing 1;

[0054] The water inlet pipe 6 is connected to the first water distributor 5, and the three-way valve 9 is installed on the water inlet pipe 6;

[0055] The branch water pipe 14 is connected to the three-way valve 9, and two sets of the second water distributors 13 are installed on the branch water pipe 14, with the spray nozzles of the two sets of the second water distributors 13 arranged opposite to each other.

[0056] The partition 11 is installed inside the water tank 12, dividing the water tank 12 into two water storage units, and is located between the two sets of the second water distributors 13;

[0057] In use, the three-way valve 9 installed on the water inlet pipe 6 enables interconnection with the first water distributor 5 and the second water distributor 13, realizing intelligent switching of the water path. The two sets of second water distributors 13 are arranged opposite to each other, so that the ice crystals generated by the low temperature airflow are concentrated on the middle partition 11 and naturally settle into the water tank 12 without affecting other components.

[0058] In this embodiment, the water inlet pipe 6 is connected to the drain pipe 8, and the drain pipe 8 is equipped with an electric valve 7. The drain pipe 8 is designed to drain the residual water in the pipeline.

[0059] In this embodiment, a water collector 4 is also included. The water collector 4 is disposed inside the evaporative chiller unit housing 1 and is located above the first water distributor 5.

[0060] In this embodiment, four sets of fans 3 are arranged in a rectangular array on the top of the evaporative chiller unit housing 1. Two adjacent sets of fans 3 form an evaporation module, and the two sets of evaporation modules are not completely corresponding to the water storage unit. The fans 3 in each set of evaporation modules rotate in both directions simultaneously.

[0061] In this embodiment, the filler 2 is a PVC filler.

[0062] refer to Figure 3 and Figure 4 The second embodiment of this utility model: high temperature mode, the three-way valve 9 adjusts the water output of the first water distributor 5, the drain electric valve 7 is closed, the normal fan 3 rotates forward, when the outdoor dry bulb temperature is below 0℃ for several consecutive hours, the fan 3 rotates in reverse for 0.5h.

[0063] refer to Figure 5 The third embodiment of this utility model: medium temperature mode (outdoor temperature ≤ -5℃), the three-way valve 9 adjusts the water output of the first water distributor 5, the electric valve 7 on the drain pipe 8 is closed, one module fan 3 rotates forward, and the adjacent module fan 3 rotates in reverse. The module of forward and reverse fan 3 is changed once a day.

[0064] refer to Figure 6 The fourth embodiment of this utility model: Low temperature mode (outdoor temperature ≤ -20℃), the three-way valve 9 adjusts the second water distributor 13 to spray water, the drain electric valve 7 opens, and the fan 3 reverses.

[0065] The working principle of this utility model is as follows:

[0066] The three-way valve 9 installed on the water inlet pipe 6 enables interconnection with the first water distributor 5 and the second water distributor 13, realizing intelligent switching of the water path. The two sets of second water distributors 13 are arranged opposite each other, so that the ice crystals generated by the low temperature airflow are concentrated on the middle partition 11 and naturally settle into the water tank 12 without affecting other components.

[0067] This application has good antifreeze performance: through the combination of two sets of water distributors and three-way electric valve 7, and the flexible control of forward and reverse rotation of fan 3, it effectively avoids the collapse of packing 2 and the freezing of air inlet and water tank 12; and the cost is low, only a few parts need to be added to achieve the antifreeze effect, while extending the running time and reducing equipment downtime caused by parts freezing.

[0068] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0069] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

[0070] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A special indirect evaporative chiller unit for extremely cold regions, characterized in that, It includes the evaporative chiller unit housing, packing, fan, inlet pipe, precooling device, three-way valve, branch pipe, first water distributor, second water distributor, partition plate, and water tank; The packing material is installed inside the evaporative chiller unit housing; The precooling device is installed inside the evaporative chiller unit; The first water distributor is installed inside the evaporative chiller unit and is positioned above the packing material; The water tank is located inside the evaporative chiller unit and below the packing material; The fan is installed on the top of the evaporative chiller unit housing; The water inlet pipe is connected to the first water distributor, and the three-way valve is installed on the water inlet pipe; The branch water pipe is connected to the three-way valve, and two sets of the second water distributors are installed on the branch water pipe, with the spray nozzles of the two sets of the second water distributors arranged opposite to each other. The partition is installed inside the water tank, dividing the water tank into two water storage units, and is located between the two sets of the second water distributors.

2. The indirect evaporative chiller unit for extremely cold regions according to claim 1, characterized in that, The inlet pipe is connected to a drain pipe, and an electric valve is installed on the drain pipe.

3. The indirect evaporative chiller unit for extremely cold regions according to claim 1, characterized in that, The fan is provided in four sets, arranged in a rectangular array on the top of the evaporative chiller unit. Each pair of adjacent fan sets constitutes an evaporation module, and the two sets of evaporation modules are not completely corresponding to the water storage unit.

4. A special indirect evaporative chiller unit for extremely cold regions according to claim 3, characterized in that, The fans in each of the evaporation modules rotate in both directions simultaneously.

5. A special indirect evaporative chiller unit for extremely cold regions according to claim 1, characterized in that, The packing material is PVC packing.

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