An evaporative cooler

Abstract

The application relates to the field of electronic-grade polysilicon production, and provides an evaporation cooling machine, which comprises a main body, a condenser pipe, a water spraying structure and a flow guide structure, wherein the water spraying structure sprays water towards the condenser pipe in a way of evaporation cooling, water drops falling from the condenser pipe are received by the flow guide structure, the flow guide structure guides the water drops towards the middle of the bottom surface of the main body, and the water drops finally drop on the middle of the bottom surface of the main body. Since the splashing range of the water drops is limited, the dropping position of the water drops is changed, the splashing of the water drops to the air window is reduced, the problem that the air window is iced in winter is effectively prevented, and the problem of blocking the air window caused by icing is solved.

Description

Technical Field

[0001] This application relates to the field of electronic-grade polysilicon production, and more particularly to an evaporation cooler. Background Technology

[0002] Electronic-grade polysilicon is a high-purity silicon material used in the manufacture of semiconductor devices and solar cells. Its production process requires extremely high purity and precise control to meet the stringent requirements of the electronics industry. The cold hydrogenation process is a key step in polysilicon production, where the reaction typically occurs in a fluidized bed reactor, producing a mixture of chlorosilanes such as trichlorosilane, silicon tetrachloride, and dichlorosilane as process gases.

[0003] The process gas is separated into chlorosilanes by cooling with a condensing medium. Since the cooling medium contains Freon, an evaporative cooler is needed to cool the Freon. The evaporative cooler is equipped with a water spray system and condenser tubes containing the condensing medium. The water spray system sprays water onto the condenser tubes, and the evaporation of the water absorbs heat, thus cooling the condensing medium. To enhance the cooling effect of the evaporation, air vents are installed around the evaporative cooler.

[0004] However, after the water drips from the condenser, it will splash around and onto the windshield. In winter, the water droplets on the windshield will freeze and block the windshield, thus affecting the heat exchange effect. Utility Model Content

[0005] This application provides an evaporative cooler to solve the problem that water droplets on the windshield freeze and clog the windshield in winter.

[0006] On one hand, this application provides an evaporative cooler, comprising:

[0007] The main body has an installation space inside; ventilation windows are provided on the periphery of the main body.

[0008] A condenser tube is disposed within the installation space; a condensing medium is allowed to flow through the condenser tube.

[0009] A water spray structure is disposed within the installation space; the water spray structure is adapted to spray water toward the condenser pipe.

[0010] A flow guiding structure is provided within the installation space; the flow guiding structure is positioned between the air vent and the condenser pipe; the flow guiding structure is adapted to receive water droplets falling from the condenser pipe and guide the water droplets toward the center of the bottom surface of the main body.

[0011] This application provides an evaporative cooler, wherein the flow guiding structure includes:

[0012] A guide plate, adapted to be connected to the main body; the guide plate is adapted to receive water droplets falling from the condenser tube; the guide plate is provided with a central hole; the central hole corresponds to the middle of the bottom surface of the main body.

[0013] This application provides an evaporative cooler, wherein the side of the guide plate facing the condenser tube forms a receiving surface; the receiving surface is a conical surface.

[0014] This application provides an evaporative cooler, wherein the condenser tube includes a plurality of cooling tubes connected in parallel.

[0015] This application provides an evaporative cooler, which further includes:

[0016] A collection box is disposed within the installation space; the collection box is adapted to receive and collect the water droplets guided by the flow guiding structure.

[0017] This application provides an evaporative cooler, which further includes:

[0018] A circulation structure is provided, which is adapted to be connected to the collection tank and the water spray structure; the circulation structure drives the water in the collection tank to move toward the water spray structure.

[0019] This application provides an evaporative cooler, wherein the water spray structure includes:

[0020] A water spray body is disposed at the top of the installation space; the interior of the water spray body is adapted to store water.

[0021] Several nozzles; the nozzles are disposed at the bottom of the water spray body and communicate with the water spray body; the nozzles are adapted to spray water toward the condenser pipe.

[0022] This application provides an evaporative cooler, wherein a plurality of the nozzles are evenly spaced at the bottom of the water spray body.

[0023] This application provides an evaporative cooler, which further includes:

[0024] A fan structure is provided on one side of the main body; the fan structure has an air outlet adapted to communicate with the installation space of the main body; the fan is adapted to blow air toward the condenser tube to increase the air velocity on the surface of the condenser tube.

[0025] This application provides an evaporative cooler, which further includes:

[0026] Water injection pipe, which is adapted to communicate with the collection tank; water is added to the collection tank through the water injection pipe.

[0027] This application provides an evaporative cooler, including a main body, a condenser tube, a water spray structure, and a flow guiding structure. The water spray structure sprays water towards the condenser tube to cool it down through evaporation. Subsequently, water droplets falling from the condenser tube are caught by the flow guiding structure, which guides the water droplets towards the center of the bottom surface of the main body. The water droplets eventually fall onto the center of the bottom surface of the main body. Since the splash range of the water droplets is limited, by changing the droplet's landing position, the splashing of water droplets onto the windshield is reduced, thereby effectively preventing the windshield from freezing in winter and solving the problem of windshield blockage caused by icing. Attached Figure Description

[0028] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0029] Figure 1 This application provides an overall structural schematic diagram of an evaporative cooler.

[0030] Figure label:

[0031] 100. Main body; 110. Installation space; 120. Ventilation window;

[0032] 200. Condenser; 210. Cooling pipe;

[0033] 300. Water spray structure; 310. Water spray body; 320. Spray head; 321. Spray nozzle;

[0034] 400. Flow guiding structure; 410. Flow guide plate; 411. Center hole; 412. Receiving surface;

[0035] 500, Collection Box;

[0036] 600. Loop structure;

[0037] 700. Fan structure;

[0038] 800, Water Injection Pipe.

[0039] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0040] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0041] First, let me explain the terms used in this application:

[0042] Freon: mainly refers to CFCs and HCFCs refrigerants, which is a general term for a class of artificially synthesized halogenated hydrocarbon refrigerants. They were once widely used in refrigeration, air conditioning, foaming agents and other fields.

[0043] Electronic-grade polysilicon is a high-purity silicon material used in the manufacture of semiconductor devices and solar cells. Its production process requires extremely high purity and precise control to meet the stringent requirements of the electronics industry. The first step in producing electronic-grade polysilicon is to extract high-purity silicon from natural silicon materials. Subsequently, metallurgical-grade silicon is reacted with hydrogen chloride to produce trichlorosilane (SiHCl3). Trichlorosilane undergoes multiple distillations in a distillation column to remove impurities. The high-purity trichlorosilane is then decomposed at high temperatures, typically around 1100°C, and polycrystalline silicon is deposited onto silicon ingots using chemical vapor deposition. After cooling, the polycrystalline silicon ingots are cut into ingots or wafers suitable for further processing. These wafers will be used to manufacture semiconductor devices or solar cells.

[0044] The polycrystalline silicon cold hydrogenation process mainly involves a hydrogenation reaction in a fluidized bed hydrogenation reactor at 565-590℃ / 2.5-2.9 MPa, driven by hydrogen and silicon tetrachloride, with copper chloride as a catalyst. This reaction produces a mixture of chlorosilanes, including trichlorosilane, silicon tetrachloride, and dichlorosilane. The resulting chlorosilane and hydrogen mixture exiting the reactor contains high-boiling-point chlorosilanes, metal chlorides, and trace amounts of fine silicon powder.

[0045] In existing technology, evaporative coolers are equipped with a water spraying device and condenser tubes containing condensing medium. The water spraying device sprays water onto the condenser tubes, and the evaporation of water absorbs heat to cool the condensing medium. To enhance the cooling effect of evaporation, air vents are installed around the evaporative cooler. However, water dripping from the condenser tubes splashes outwards and onto the air vents. In winter, the water droplets on the air vents freeze and block the vents, thus affecting the heat exchange efficiency.

[0046] To address the aforementioned issues, this application provides an evaporative cooler comprising a main body 100, a condenser tube 200, a water spray structure 300, and a flow guiding structure 400. The water spray structure 300 sprays water toward the condenser tube 200, cooling it through evaporation. Subsequently, water droplets falling from the condenser tube 200 are caught by the flow guiding structure 400, which guides the droplets toward the center of the bottom surface of the main body 100. The droplets eventually fall onto the center of the bottom surface of the main body 100. Since the splash range of the water droplets is limited, by changing the droplet's landing position, the amount of water droplets splashing onto the air vent 120 is reduced, thereby effectively preventing the air vent 120 from icing in winter and solving the problem of the air vent 120 being blocked due to icing.

[0047] like Figure 1 As shown, this embodiment provides an evaporative cooler, including a main body 100, a condenser tube 200, a water spray structure 300, and a flow guiding structure 400. The main body 100 has an installation space 110 inside, and air vents 120 are provided around the main body 100. The condenser tube 200 is disposed in the installation space 110 and is used for the flow of condensing medium. The water spray structure 300 is disposed in the installation space 110 and is adapted to spray water toward the condenser tube 200. The flow guiding structure 400 is disposed in the installation space 110 and is located between the air vents 120 and the condenser tube 200. The flow guiding structure 400 is adapted to receive water droplets falling from the condenser tube 200 and guide the water droplets toward the center of the bottom surface of the main body 100.

[0048] The guide structure 400 receives water droplets falling from the condenser tube 200 and guides them toward the center of the bottom surface of the main body 100. The water droplets eventually fall onto the center of the bottom surface of the main body 100. Since the splash range of the water droplets is limited, by changing the droplet's landing position, the splashing of water droplets onto the windshield 120 is reduced, thereby effectively preventing the windshield 120 from freezing in winter and solving the problem of windshield 120 being blocked due to freezing.

[0049] It should be noted that the splash range of the water droplet after it lands is circular. By controlling the landing point of the water droplet to coincide with the center of the bottom surface of the main body 100, the windshield 120 can be kept away from the splash range of the water droplet after it lands to the greatest extent.

[0050] Furthermore, in the evaporative cooler provided in this embodiment, the flow guiding structure 400 includes a flow guiding plate 410, which is adapted to be connected to the main body 100; the flow guiding plate 410 is adapted to receive water droplets falling from the condenser tube 200; the flow guiding plate 410 is provided with a central hole 411; the central hole 411 corresponds to the middle of the bottom surface of the main body 100.

[0051] When water droplets on the condenser tube 200 fall onto the guide plate 410, the water droplets cannot pass through the guide plate 410, so the water droplets gather on the guide plate 410 and eventually pass through the central hole 411 before dripping onto the bottom of the main body 100. By setting the guide plate 410, the flow path of the water droplets can be precisely controlled.

[0052] It should be noted that the shape of the guide plate 410 can be square or circular. In this embodiment, the shape of the guide plate 410 needs to correspond to the shape of the main body 100, and the projection of the guide plate 410 on the bottom surface needs to be the same as the shape of the bottom surface of the main body 100.

[0053] The guide plate 410 can be connected to the inner wall of the main body 100 by bonding or welding. It is necessary to ensure the airtightness between the guide plate 410 and the main body 100 to prevent water droplets on the condenser pipe 200 from flowing out from the gap between the guide plate 410 and the main body 100. If water droplets flow out from the gap between the guide plate 410 and the main body 100, the water droplets will flow along the inner wall of the main body 100 to the vent 120, causing the vent 120 to freeze and become blocked.

[0054] Furthermore, the side of the guide plate 410 facing the condenser tube 200 forms a receiving surface 412; the receiving surface 412 is a conical surface.

[0055] The receiving surface 412 is designed as a conical surface, which can take advantage of the flow characteristics of water droplets to make the water droplets automatically converge towards the central hole 411 under the action of gravity; and in winter, it can prevent water droplets from remaining on the guide plate 410, which would cause ice to form on the guide plate 410.

[0056] It should be noted that, in order to further reduce water droplet residue on the receiving surface 412, a hydrophobic coating, such as a plastic film, can be applied to the receiving surface 412.

[0057] Furthermore, in the evaporative cooler provided in this embodiment, the condenser tube 200 includes a plurality of cooling tubes 210, which are connected in parallel.

[0058] By connecting several cooling pipes 210 in parallel, the flow rate can be doubled compared to connecting several cooling pipes 210 individually. The parallel connection can also reduce system resistance, and the remaining pipes can continue to operate when a single pipe fails, thus improving system stability.

[0059] It should be noted that the material of the cooling pipe 210 needs to be a material with high thermal conductivity, such as copper or stainless steel.

[0060] Furthermore, the evaporative cooler provided in this embodiment also includes a collection box 500, which receives and collects water droplets guided by the flow guiding structure 400.

[0061] By setting up a collection box 500, dripping water can be collected, achieving resource recycling. In this solution, the collection box 500 is a box structure with an opening at the top. After collecting water for a period of time, when the collection box 500 is almost full, it can be replaced manually.

[0062] In one possible implementation, the evaporative cooler further includes a circulation structure 600 adapted to be connected to a collection tank 500 and a water spray structure 300, the circulation structure 600 driving water in the collection tank 500 to move toward the water spray structure 300.

[0063] Furthermore, the circulation structure 600 can be a circulating water pump, which converts electrical energy into the mechanical energy of a motor, thereby driving the water in the collection tank 500 to flow toward the spray structure 300. By setting the circulation structure 600, the water recovered in the collection tank 500 can be directly reused.

[0064] By setting up a circulation structure 600, the need for manual water replenishment of the spray structure 300 is eliminated, making the overall structure more automated.

[0065] It should be noted that the circulation structure 600 is connected to the collection tank 500 and the spray structure 300 respectively through water pipes. During the start-up process of the circulation structure 600, the motor inside the circulation structure 600 works, drives the impeller to rotate, accelerates and pressurizes the water, thereby driving the water in the collection tank 500 to move towards the spray structure 300.

[0066] Furthermore, the water spray structure 300 includes a water spray body 310 and several nozzles 320. The water spray body 100 is disposed at the top of the installation space 110, and the interior of the water spray body 100 is suitable for storing water. The nozzles 320 are disposed at the bottom of the water spray body 100 and communicate with the water spray body 100. The nozzles 320 are suitable for spraying water toward the condenser pipe 200.

[0067] In one possible implementation, the water spray body 100 can also be set on the side wall of the installation space 110, so that the water spray structure 300 can spray water toward the condenser pipe 200.

[0068] For example, the water spray body 100 is a box structure, and the nozzle 320 is an anti-clogging nozzle 320. The anti-clogging nozzle 320 has a large channel design with a channel diameter greater than 3mm, and a swirl vane is set inside it to achieve a self-cleaning effect.

[0069] To further ensure the anti-clogging effect, a booster pump can be installed to increase the pressure of the nozzle 320, thereby achieving the anti-clogging effect.

[0070] Specifically, several nozzles 320 are evenly spaced at the bottom of the water spray body 100.

[0071] By evenly setting the nozzles 320, water can be sprayed evenly on the surface of the condenser tube 200, ensuring that water droplets form a water film on the surface of the condenser tube 200, thereby increasing the cooling effect on the condenser tube 200.

[0072] In one possible implementation, the evaporative cooler further includes a fan structure 700 disposed on one side of the main body 100. The fan structure 700 has an air outlet adapted to communicate with the installation space 110 of the main body 100. The fan is adapted to blow air toward the condenser tube 200 to increase the air velocity on the surface of the condenser tube 200.

[0073] By blowing air onto the condenser tube 200 through the fan structure 700, the evaporation rate of the water film on the surface of the condenser tube 200 can be accelerated, thereby increasing the cooling rate of the condenser tube 200.

[0074] Specifically, the fan structure 700 is located on the top of the main body 100. The fan structure 700 includes a motor and blades. The airflow is driven to move toward the condenser pipe 200 by the motor driving the blades to rotate.

[0075] It should be noted that a certain amount of water is pre-stored in the water spray body 100. The water is evenly sprayed onto the surface of the condenser tube 200 through several nozzles 320. The water will leave a film on the surface of the condenser tube 200. At the same time, the fan structure 700 blows air onto the surface of the condenser tube 200, thereby accelerating the evaporation of the water film on the surface of the condenser tube 200 and speeding up the cooling process.

[0076] Meanwhile, water vapor inside the main body 100 is connected to the outside air through the vent 120, providing conditions for the evaporation of the water film; subsequently, water on the surface of the condenser tube 200 drips down in droplets and is caught by the guide structure 400 and guided toward the center of the bottom surface of the main body 100. The guided water droplets then enter the collection box 500, and the water in the collection box 500 is further sent back to the spray structure 300 by the circulation structure 600, thereby achieving recycling.

[0077] In one possible implementation, the evaporative cooler includes a water injection pipe 800 connected to a collection tank 500, through which water is supplied to the collection tank 500.

[0078] It should be noted that since the condenser tube 200 is cooled by evaporation carrying heat, the water in the entire equipment is in a state of continuous reduction. By manually observing the water level in the collection tank 500, water is added to the collection tank 500 in a timely manner through the water injection pipe 800, thereby ensuring the normal operation of the equipment.

[0079] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0080] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An evaporative cooler, characterized in that, include: The main body (100) has an installation space (110) inside; ventilation windows (120) are provided on the periphery of the main body (100). A condenser tube (200) is disposed within the installation space (110); the condenser tube (200) is used for the flow of condensing medium. A water spray structure (300) is disposed within the installation space (110); the water spray structure (300) is adapted to spray water toward the condenser pipe (200); A flow guiding structure (400) is disposed within the installation space (110); the flow guiding structure (400) is disposed between the air vent (120) and the condenser tube (200); the flow guiding structure (400) is adapted to receive water droplets falling from the condenser tube (200) and guide the water droplets toward the center of the bottom surface of the main body (100).

2. The evaporative cooler according to claim 1, characterized in that, The flow guiding structure (400) includes: A guide plate (410) is adapted to be connected to the main body (100); the guide plate (410) is adapted to receive the water droplets falling from the condenser tube (200); the guide plate (410) is provided with a central hole (411); the central hole (411) corresponds to the middle part of the bottom surface of the main body (100).

3. The evaporative cooler according to claim 2, characterized in that, The side of the guide plate (410) facing the condenser tube (200) forms a receiving surface (412); the receiving surface (412) is a conical surface.

4. The evaporative cooler according to claim 1, characterized in that, The condenser tube (200) includes a plurality of cooling tubes (210), which are connected in parallel.

5. The evaporative cooler according to any one of claims 1-4, characterized in that, Also includes: A collection box (500) is disposed within the installation space (110); The collection box (500) is adapted to receive and collect the water droplets guided by the flow guiding structure (400).

6. The evaporative cooler according to claim 5, characterized in that... Also includes: A circulation structure (600) adapted to be connected to the collection tank (500) and the spray structure (300); the circulation structure (600) drives the water in the collection tank (500) to move toward the spray structure (300).

7. The evaporative cooler according to any one of claims 1-4, characterized in that, The water spray structure (300) includes: A water spray body (310) is disposed on top of the installation space (110); the interior of the water spray body (310) is adapted to store water. A plurality of nozzles (320); the nozzles (320) are disposed at the bottom of the water spray body (310) and communicate with the water spray body (310); the nozzles (320) are adapted to spray water toward the condenser pipe (200).

8. The evaporative cooler according to claim 7, characterized in that, Several nozzles (320) are evenly spaced at the bottom of the water spray body (310).

9. The evaporative cooler according to any one of claims 1-4, characterized in that, Also includes: A fan structure (700) is provided on one side of the main body (100); The fan structure (700) has an air outlet adapted to communicate with the mounting space (110) of the main body (100); the fan is adapted to blow air toward the condenser tube (200) to increase the air velocity on the surface of the condenser tube (200).

10. The evaporative cooler according to claim 5, characterized in that, Also includes: Water injection pipe (800), the water injection pipe (800) being adapted to communicate with the collection tank (500); Water is supplied to the collection tank (500) through the water inlet pipe (800).

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