A steam treatment device

Abstract

The application relates to the technical field of water resistance experiments of internal combustion engines, and provides a steam treatment device which comprises a box structure, a plurality of air suction structures and at least one fan structure, the air suction structures are arranged in the box, and the two ends of the air suction structures form air inlet ports and air outlet ports respectively, wherein the fan structure is suitable for blowing air into the air suction structure and increasing the gas flow rate in the air suction structure, so that the air suction structure is in a negative pressure state, and steam near the air inlet ports enters the air suction structure under the action of atmospheric pressure. In the application, the fan structure is used to blow air into the air suction structure, so that the gas flow rate in the air suction structure is increased. According to Bernoulli's law, the faster the speed of gas in the flowing process, the lower the pressure. The air suction structure is in a negative pressure state, the air suction structure in the negative pressure state can suck steam near the air inlet ports, so that high-temperature water vapor near the internal combustion engine is reduced, and the high-temperature water vapor is prevented from being sucked into the internal combustion engine.

Description

Technical Field

[0001] This application relates to the field of water resistance testing technology for internal combustion locomotives, and in particular to a steam treatment device. Background Technology

[0002] The water resistance test for diesel locomotives involves connecting the engine to a water tank after startup. The water's resistance dissipates the engine's energy, simulating the locomotive's load condition and allowing for power regulation tests. During this test, the water absorbs a large amount of energy, heating up and forming high-temperature steam. This steam diffuses around the locomotive. Because locomotives use cooling fans to dissipate heat from internal equipment, the locomotive's interior is under negative pressure. This high-temperature steam is drawn into the locomotive, creating a harsh working environment for the test personnel. Furthermore, the large amount of steam drawn into the locomotive in a short time causes condensation, accelerating corrosion. Additionally, the numerous electrical components inside the locomotive mean that the steam and condensate entering the locomotive can cause short circuits and other malfunctions.

[0003] In the prior art, in order to prevent high-temperature steam from entering the vehicle body, diesel locomotives are usually kept away from the water pool. This can reduce the high-temperature water vapor around the diesel locomotive, thereby avoiding the intake of a large amount of high-temperature water vapor by the diesel locomotive in a short period of time. However, when multiple diesel locomotives are tested for water resistance at the same time, due to the limited space and cable length, it is not possible to ensure that all diesel locomotives are kept away from the high-temperature water vapor at the same time. Utility Model Content

[0004] This application provides a steam treatment device to solve the problem that a diesel locomotive inhales a large amount of water vapor in a short period of time during a water resistance test.

[0005] On one hand, this application provides a steam treatment apparatus, comprising:

[0006] A box structure, wherein an installation space is provided inside the box structure;

[0007] Several suction structures are disposed within the housing structure; each suction structure has an air inlet port and an air outlet port at both ends; the air inlet port is connected to the outside environment; and the air outlet port is connected to the installation space.

[0008] At least one fan structure is provided, the fan structure being adapted to connect to the air intake structure, the fan structure being adapted to blow air into the air intake structure, and the fan structure being adapted to increase the gas flow rate within the air intake structure so as to create a negative pressure state within the air intake structure; the steam near the air inlet port enters the air intake structure under atmospheric pressure.

[0009] This application provides a steam treatment device, wherein the air intake structure includes an intermediate air intake pipe and a first air intake pipe and a second air intake pipe disposed on both sides of the intermediate air intake pipe; the end of the first air intake pipe away from the intermediate air intake pipe forms the air inlet port, and the end of the second air intake pipe away from the intermediate air intake pipe forms the air outlet port; the fan structure is adapted to communicate with the intermediate air intake pipe and blow air towards the second air intake pipe so that the steam in the intermediate air intake pipe moves towards the air outlet port.

[0010] This application provides a steam treatment apparatus in which the cross-sectional area of ​​the first suction pipe gradually decreases along the steam flow direction, and the cross-sectional area of ​​the second suction pipe gradually increases along the steam flow direction.

[0011] This application provides a steam treatment apparatus, which further includes:

[0012] An airflow jet pipe is provided, with its two ends connected to the fan structure and the intermediate intake pipe, respectively. A portion of the airflow jet pipe is located inside the intermediate intake pipe, and the portion of the airflow jet pipe located inside the intermediate intake pipe is bent toward the direction of the second intake pipe.

[0013] This application provides a steam treatment apparatus, which further includes:

[0014] At least one first cooling structure is provided at the air outlet, and a first cooling space is formed between the inner walls of the first cooling structure; the steam blown out from the air outlet is adapted to enter the first cooling space and contact the first cooling structure, and the steam is adapted to exchange heat with the first cooling structure in the first cooling space.

[0015] This application provides a steam treatment apparatus, which further includes:

[0016] A drain hole is provided at the bottom of the first cooling structure; condensate in the first cooling space is discharged into the installation space through the drain hole.

[0017] This application provides a steam treatment apparatus, wherein the first cooling space is adapted to communicate with the installation space;

[0018] Also includes:

[0019] A second cooling structure is disposed within the housing structure; the second cooling structure is adapted to reduce the temperature within the installation space; the second cooling structure is adapted to contact and exchange heat with the steam within the installation space.

[0020] A drain pipe is provided, which is adapted to communicate with the bottom of the housing structure; the condensate in the installation space flows out through the drain pipe.

[0021] This application provides a steam treatment device, wherein the blower structure includes:

[0022] An axial flow fan, wherein the outlet end of the axial flow fan is adapted to communicate with the air intake structure;

[0023] An air intake pipe is provided, the ends of which are connected to the axial flow fan and the outside environment, respectively; the axial flow fan is adapted to drive outside air to move toward the air intake structure.

[0024] This application provides a steam treatment device, wherein the blower structure further includes:

[0025] An air intake diffuser is disposed between the air intake pipe and the axial flow fan; the cross-sectional area of ​​the air intake diffuser gradually increases along the direction of airflow from the outside; the air intake diffuser is adapted to reduce the flow velocity of the outside air.

[0026] This application provides a steam treatment device, wherein the blower structure further includes:

[0027] An air intake convergence pipe is disposed between the axial flow fan and the air intake structure; the cross-sectional area of ​​the air intake convergence pipe gradually decreases along the direction of external air flow, and the flow velocity of the external air passing through the air intake convergence pipe increases.

[0028] This application provides a steam treatment device, including a box structure, several suction structures, and at least one fan structure. The suction structures are disposed inside the box, with an inlet port and an outlet port at each end. The fan structure is adapted to blow air into the suction structure and increase the gas flow rate within the suction structure, thereby creating a negative pressure state within the suction structure. Steam near the inlet port enters the suction structure under atmospheric pressure. In this application, the fan structure blows air into the suction structure to increase the gas flow rate within the suction structure. According to Bernoulli's law, the higher the velocity of a gas during its flow, the lower the pressure. The suction structure is in a negative pressure state, which allows it to draw in steam near the inlet port, thereby reducing the amount of high-temperature water vapor near the diesel locomotive and preventing the diesel locomotive from drawing in high-temperature water vapor. Attached Figure Description

[0029] 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.

[0030] Figure 1This application provides a schematic diagram of the overall structure of a steam treatment device;

[0031] Figure 2 This application provides a schematic diagram of the air intake structure of a steam treatment device.

[0032] Figure 3 This is a schematic diagram of the first cooling structure of a steam treatment apparatus provided in this application;

[0033] Figure 4 A schematic diagram of the airflow injection pipe structure of a steam treatment device provided in this application;

[0034] Figure 5 This is a schematic diagram of the second cooling structure of a steam treatment device provided in this application.

[0035] Figure label:

[0036] 100. Box structure; 110. Installation space;

[0037] 200, Inhalation structure; 210, Inlet port; 220, Outlet port; 230, Intermediate intake pipe; 240, First intake pipe; 250, Second intake pipe;

[0038] 300. Fan structure; 310. Axial flow fan; 320. Inlet duct; 330. Inlet diffuser; 340. Inlet convergent duct;

[0039] 400. Airflow jet pipe;

[0040] 500. First cooling structure; 510. First cooling space;

[0041] 600. Drain hole;

[0042] 700. Second cooling structure;

[0043] 800. Drain pipe.

[0044] 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

[0045] 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.

[0046] First, let me explain the terms used in this application:

[0047] Diesel locomotives: Diesel locomotives are railway traction vehicles that use an internal combustion engine (usually a diesel engine) as their power source and convert thermal energy into mechanical energy through a transmission system to drive the wheels. Their core technology lies in the synergistic effect of fuel combustion, energy conversion, and power transmission, combining flexibility and adaptability, and are widely used for freight and passenger transport on non-electrified railway lines.

[0048] Water Resistance Test for Diesel Locomotives: The water resistance test for diesel locomotives is a core test conducted after manufacturing or major overhaul of electric transmission diesel locomotives. Its purpose is to verify the performance of the diesel engine-traction generator set by simulating locomotive operating conditions, adjusting power characteristics, protection systems, and key parameters to ensure safe and reliable locomotive operation. Its core principle is to use water resistance as a load, replacing the traction motor. By adjusting the area of ​​the plates immersed in water, the resistance value is changed, simulating the locomotive's operating conditions under different loads.

[0049] Bernoulli's Law states that under ideal conditions, at any cross-section of the same flow tube, the sum of the kinetic energy, potential energy, and pressure potential energy of a unit volume of fluid is a constant. Its most famous corollary is that for flow at constant height, the greater the flow velocity, the lower the pressure. The pressure often referred to in fluid mechanics actually refers to the pressure per unit area, which is the pressure in general physics.

[0050] In existing technologies, to prevent high-temperature steam from entering the vehicle body, diesel locomotives are usually kept away from the water tank. By increasing the distance between the diesel locomotive and the high-temperature water vapor, the high-temperature water vapor that diffuses to the surrounding area of ​​the diesel locomotive is reduced, thereby preventing a large amount of high-temperature water vapor from being inhaled by the diesel locomotive in a short period of time. However, when conducting water resistance tests on multiple diesel locomotives at the same time, due to space limitations and cable length limitations, it is not possible to ensure that all diesel locomotives are kept away from the high-temperature water vapor at the same time.

[0051] To address the aforementioned technical problems, this application provides a steam treatment device. In this application, the flow rate of the gas inside the suction structure 200 is increased by blowing air into the suction structure 200 through the fan structure 300. According to Bernoulli's law, the pressure is lower where the gas flows faster. The suction structure 200 is in a negative pressure state. The suction structure 200 in a negative pressure state can draw in steam near the air inlet 210, thereby reducing the high-temperature water vapor near the internal combustion engine and preventing the high-temperature water vapor from being drawn into the internal combustion engine.

[0052] like Figure 1 As shown, this embodiment provides a steam treatment device, including a housing structure 100, a plurality of suction structures 200, and at least one fan structure 300. The housing structure 100 has an installation space 110. The suction structures 200 are disposed within the housing structure 100, and each suction structure 200 has an inlet port 210 and an outlet port 220 at both ends. The inlet port 210 is adapted to communicate with the outside, and the outlet port 220 is adapted to communicate with the installation space 110. The fan structure 300 is adapted to connect to the suction structures 200 and is adapted to blow air into the suction structures 200. The fan structure 300 is adapted to increase the gas flow rate within the intake structure 200, so that the intake structure 200 is in a negative pressure state. The steam near the intake port 210 enters the intake structure 200 under atmospheric pressure. In this application, the fan structure 300 blows air into the intake structure 200 to increase the gas flow rate within the intake structure 200, so that the intake structure 200 is in a negative pressure state. The negative pressure state of the intake structure 200 can draw in the steam near the intake port 210, thereby reducing the high-temperature water vapor near the internal combustion locomotive and preventing the high-temperature water vapor from being drawn into the internal combustion locomotive.

[0053] It should be noted that, in order to further increase the air intake effect, the box structure 100 in this embodiment is set between the water pool and the internal combustion locomotive in the water resistance test of the internal combustion locomotive. In order to ensure that the absorption of high temperature water vapor is maximized in this embodiment, the distance between the water pool and the box structure 100 in the water resistance test of the internal combustion locomotive can be reduced.

[0054] like Figure 2 and Figure 3 As shown, this embodiment provides a steam treatment device, wherein the suction structure 200 includes a middle suction pipe 230 and a first suction pipe 240 and a second suction pipe 250 disposed on both sides of the middle suction pipe 230; wherein the end of the first suction pipe 240 away from the middle suction pipe 230 forms an air inlet port 210, wherein the end of the second suction pipe 250 away from the middle suction pipe 230 forms an air outlet port 220, and the fan structure 300 is adapted to communicate with the middle suction pipe 230 and blow air toward the second suction pipe 250 so that the steam in the middle suction pipe moves toward the air outlet port 220.

[0055] It should be noted that, while the fan structure 300 blows the steam in the intermediate suction pipe 230 toward the outlet port 220, it also increases the airflow velocity in the intermediate suction pipe 230, creating a negative pressure state within the intermediate suction pipe 230. This negative pressure state at the intermediate suction port allows for the adsorption of steam near the inlet port 210 of the first suction pipe 240. After the steam enters the first suction pipe 240 through the inlet port 210, due to the negative pressure state of the intermediate suction pipe 230, the steam in the first suction pipe 240 moves toward the intermediate suction pipe 230 under atmospheric pressure. Subsequently, the steam in the intermediate suction pipe 230 moves toward the second suction pipe 250 under the blowing action of the fan structure 300, and finally flows out of the outlet port 220, ensuring that all the steam is ultimately collected within the housing structure 100.

[0056] like Figure 4 As shown, this embodiment provides a steam treatment device, wherein the cross-sectional area of ​​the first suction pipe 240 gradually decreases along the steam flow direction, and the cross-sectional area of ​​the second suction pipe 250 gradually increases along the steam flow direction. By gradually decreasing the cross-sectional area of ​​the first suction pipe 240 along the steam flow direction, the steam velocity within the first suction pipe 240 increases as the cross-sectional area decreases. This increased steam velocity further enhances the negative pressure effect of the intermediate suction pipe 230. Subsequently, the steam velocity decreases as the cross-sectional area of ​​the second suction pipe 250 increases, thus reducing the velocity of the faster-flowing steam by passing it through the second suction pipe 250.

[0057] Specifically, the intermediate suction pipe 230 is a cylindrical pipe, the first suction pipe 240 is a converging section with a cone angle of approximately 21°, and the second suction pipe 250 is a diffuser section with a cone angle of approximately 8°-15°. The steam is accelerated through the first suction pipe 240, then reaches its maximum flow rate and minimum pressure in the intermediate suction pipe 230. Subsequently, the second suction pipe 250 gradually restores the flow rate and reduces energy loss. In this embodiment, the intermediate suction pipe 230, the first suction pipe 240, and the second suction pipe 250 together form a Venturi channel, which increases the steam absorption efficiency.

[0058] It should be noted that by changing the shapes of the first intake pipe 240 and the second intake pipe 250, a Venturi channel is formed inside the intake structure 200. The Venturi channel consists of an inlet section, a contraction section, a throat (minimum cross-section), and a diffuser section. The inlet section is a cylindrical pipe, the contraction section has a cone angle of approximately 21°, the throat is a short straight pipe, and the diffuser section has a cone angle of approximately 8°-15°. The fluid is accelerated through the contraction section, the flow velocity is highest and the static pressure is lowest at the throat, and the flow velocity gradually recovers and energy loss is reduced in the diffuser section.

[0059] like Figure 4As shown, this embodiment provides a steam treatment device, which also includes an airflow injection pipe 400. Both ends of the airflow injection pipe 400 are connected to a fan structure 300 and an intermediate suction pipe 230, respectively. A portion of the airflow injection pipe 400 is located within the intermediate suction pipe 230, and the airflow injection pipe 400 within the intermediate suction pipe 230 is bent towards the second suction pipe 250. The bent airflow injection pipe 400 can change the direction of the airflow blown by the fan structure 300. Specifically, the bending angle of the airflow injection pipe 400 can be adjusted according to actual needs to ensure that the airflow blown by the fan flows towards the second suction pipe 250.

[0060] It should be noted that, in order to reduce the resistance of the airflow injection pipe 400 to the steam flow process, the length of the airflow injection pipe 400 shall not exceed the radius of the cross-sectional area of ​​the intermediate suction pipe 230.

[0061] This embodiment provides a steam treatment device, which also includes at least one cooling structure. The first cooling structure 500 is correspondingly disposed at the air outlet 220. A first cooling space 510 is formed between the inner walls of the first cooling structure 500. The steam blown out from the air outlet 220 is suitable to enter the first cooling space 510 and contact the first cooling structure 500. The steam is suitable to exchange heat with the first cooling structure 500 in the first cooling space 510.

[0062] It should be noted that an opening is provided on one side of the first cooling structure 500, and the opening of the first cooling structure 500 is set to correspond with the air outlet 220. The steam blown out from the air outlet 220 enters the first cooling space 510 inside the first cooling structure 500 through the opening of the first cooling structure 500. The first cooling structure 500 is generally made of a material with high thermal conductivity, so the temperature of the first cooling structure 500 is lower than that of the high-temperature steam. By setting the first cooling structure 500, the high-temperature steam can be cooled more quickly and condensate can be formed.

[0063] This embodiment provides a steam treatment device, which also includes a drain hole 600. The drain hole 600 is located at the bottom of the first cooling structure 500, and condensate in the first cooling space 510 is discharged into the installation space 110 through the drain hole 600. It should be noted that the condensate will collect at the bottom of the first cooling structure 500 under the action of gravity. The number of drain holes 600 can be reasonably increased or decreased according to the rate of condensate formation.

[0064] Furthermore, in this embodiment, several suction structures 200 are evenly distributed in two rows within the installation space 110, wherein there are two first cooling structures 500, each of which is connected to a row of suction structures 200. Since the high-speed steam will collide with the inner wall of the first cooling structure 500 after entering the first cooling space 510, the first cooling structure 500 can also eliminate the impact of the introduced steam.

[0065] This embodiment provides a steam treatment device, wherein a first cooling space 510 is adapted to communicate with an installation space 110. Specifically, the first cooling space 510 communicates with the installation space 110 through an opening on one side of a first cooling structure 500, and the steam in the first cooling space 510 will dissipate into the installation space 110. This embodiment also includes a second cooling structure 700 and a drain pipe 800, wherein the second cooling structure 700 is disposed within the housing structure 100, and the second cooling structure 700 is adapted to reduce the temperature within the installation hole, and the second cooling structure 700 is adapted to contact and exchange heat with the steam in the installation space 110; wherein the drain pipe 800 is adapted to communicate with the bottom of the housing structure 100, and the condensate in the installation space 110 flows out through the drain pipe 800. It should be noted that a water collection tank can be provided at the end of the drain pipe 800 to further collect and reuse the condensate in the installation space 110.

[0066] like Figure 5 As shown, in this embodiment, the second cooling structure 700 includes several cold water pipes, in which ice water flows. The cold water pipes exchange heat with the installation space 110 to reduce the temperature in the installation space 110, thereby cooling the high-temperature steam that permeates the box structure 100.

[0067] It should be noted that since the housing structure 100, the first cooling structure 500 and the second cooling structure 700 need to be in contact with steam for a long time, an anti-corrosion coating can be added to their surfaces to increase the service life of the overall device.

[0068] This embodiment provides a steam treatment device, wherein the fan structure 300 includes an axial flow fan 310 and an air inlet pipe 320. The outlet end of the axial flow fan 310 is adapted to be connected to the intake structure 200, specifically through an air jet pipe 400 and an intermediate intake pipe 230. The end of the air inlet pipe 320 is connected to the axial flow fan 310 and the outside world respectively. The axial flow fan 310 is adapted to drive the outside air to move towards the intake structure 200. Specifically, the number of fan structures 300 corresponds to the number of intake structures 200. Each intake structure 200 is connected to a separate axial flow fan 310. By increasing the number of axial flow fans 310, the power of each axial flow fan 310 can be reduced, thereby reducing the size and cost of the axial flow fan 310.

[0069] Specifically, to simplify the intake pipe 320, a main air pipe and branch air pipes are provided. The intake pipe 320 is connected to the branch air pipes, and the branch air pipes are connected to the main air pipe. In this embodiment, since the intake structure 200 is divided into two rows, there are two branch air pipes. The two branch air pipes correspond to the two rows of intake pipes 320 respectively. The ends of the main air pipe are connected to the branch air pipes and the outside. Finally, the outside air is connected to the axial flow fan 310 through the main air pipe and the branch air pipes.

[0070] This embodiment provides a steam treatment device, wherein the fan structure 300 further includes an inlet diffuser 330, which is disposed between the inlet pipe 320 and the axial flow fan 310. The cross-sectional area of ​​the inlet diffuser 330 gradually increases along the direction of external air flow, and the inlet diffuser 330 is suitable for reducing the flow velocity of the external air. By reducing the flow velocity of the external air, the temperature of the external air can be indirectly reduced. The external air cooled in the intermediate suction pipe 230 can mix and exchange heat with the high-temperature steam, which can achieve the first cooling of the high-temperature steam. Subsequently, the temperature of the high-temperature steam is further reduced in the first cooling space 510, increasing the cooling effect on the high-temperature steam.

[0071] This embodiment provides a steam treatment device, wherein the fan structure 300 further includes an air inlet converging pipe 340, wherein the air inlet converging pipe 340 is disposed between the axial flow fan 310 and the air intake structure 200, the cross-sectional area of ​​the air inlet converging pipe 340 gradually decreases along the direction of external air flow, and the flow velocity of the external air through the air inlet converging pipe 340 increases.

[0072] It should be noted that by setting the intake converging pipe 340, the airflow velocity entering the intake structure 200 can be further increased.

[0073] Furthermore, the housing structure 100 includes two side plates, a front baffle, a rear baffle, an upper cover, and a lower baffle, which are connected to each other by welding or bonding to ensure a sealing line; specifically, the air intake ports 210 of several air intake structures 200 form several through holes at the front baffle, and the drain pipe 800 is adapted to pass through the lower baffle.

[0074] In use, the device is placed between the water tank for the water resistance test and the internal combustion locomotive, with the intake port 210 of the intake structure 200 facing the water tank. The axial flow fan 310 is started. After the axial flow fan 310 starts, outside air passes through the main air pipe, branch air pipe, intake pipe 320, and intake diffuser 330 to reach the intake end of the axial flow fan 310. Subsequently, outside air passes through the outlet end of the axial flow fan 310, through the intake convergence pipe 340 and the airflow jet pipe 400, and enters the intermediate intake pipe 230, moving towards the second intake pipe 250.

[0075] According to Bernoulli's principle, after the airflow is blown out from the airflow jet pipe 400, the pressure at the intermediate intake pipe 230 decreases. Therefore, the high-temperature steam escaping from the internal combustion engine during the water resistance test reaches the intake port 210 and is drawn into the first intake pipe 240 under atmospheric pressure. It then passes through the intermediate intake pipe 230 and the second intake pipe 250, and reaches the first cooling structure 500 through the exhaust port 220. The high-speed, high-temperature steam impacts the first cooling structure 500 and is cooled, turning into condensate, which is then discharged from the drain port at the bottom of the first cooling structure 500 and collected at the bottom of the housing structure 100. Some of the high-temperature steam also diffuses into the housing structure 100. The high-temperature steam diffused into the housing structure 100 comes into contact with the second cooling structure 700 and is further cooled. Finally, the condensate at the bottom of the housing is discharged through the drain pipe 800.

[0076] 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.

[0077] 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. A steam treatment device, characterized by, include: A box structure (100) is provided with an installation space (110) inside the box structure (100); A plurality of suction structures (200) are disposed within the housing structure (100); each suction structure (200) has an air inlet port (210) and an air outlet port (220) at both ends; the air inlet port (210) is connected to the outside; the air outlet port (220) is connected to the installation space (110); At least one fan structure (300) is adapted to be connected to the intake structure (200), the fan structure (300) is adapted to blow air into the intake structure (200), the fan structure (300) is adapted to increase the gas flow rate in the intake structure (200) so that the intake structure (200) is in a negative pressure state; the steam near the air inlet (210) enters the intake structure (200) under atmospheric pressure.

2. A steam treatment device according to claim 1, wherein The air intake structure (200) includes an intermediate air intake pipe (230) and a first air intake pipe (240) and a second air intake pipe (250) disposed on both sides of the intermediate air intake pipe (230); the end of the first air intake pipe (240) away from the intermediate air intake pipe (230) forms the air inlet port (210), and the end of the second air intake pipe (250) away from the intermediate air intake pipe (230) forms the air outlet port (220); the fan structure (300) is adapted to communicate with the intermediate air intake pipe (230) and blow air toward the second air intake pipe (250) so that the steam in the intermediate air intake pipe (230) moves toward the air outlet port (220).

3. A steam treatment device according to claim 2, wherein, The cross-sectional area of ​​the first suction pipe (240) gradually decreases along the steam flow direction; the cross-sectional area of ​​the second suction pipe (250) gradually increases along the steam flow direction.

4. A steam treatment device according to claim 2, wherein Also includes: An airflow jet pipe (400) is provided, with its two ends connected to the fan structure (300) and the intermediate air intake pipe (230), respectively. A portion of the airflow jet pipe (400) is located inside the intermediate air intake pipe (230), and the airflow jet pipe (400) located inside the intermediate air intake pipe (230) is bent toward the second air intake pipe (250).

5. A steam treatment device according to any one of claims 1-4, characterized in that Also includes: At least one first cooling structure (500) is disposed at the air outlet (220), and a first cooling space (510) is formed between the inner walls of the first cooling structure (500); the steam blown out from the air outlet (220) is adapted to enter the first cooling space (510) and contact the first cooling structure (500), and the steam is adapted to exchange heat with the first cooling structure (500) in the first cooling space (510).

6. A steam treatment device according to claim 5, wherein Also includes: A drain hole (600) is provided at the bottom of the first cooling structure (500); The condensate in the first cooling space (510) is discharged into the installation space (110) through the drain hole (600).

7. A steam treatment apparatus as claimed in claim 6, wherein The first cooling space (510) is adapted to communicate with the mounting space (110); Also includes: A second cooling structure (700) is disposed within the housing structure (100); the second cooling structure (700) is adapted to reduce the temperature within the installation space (110); the second cooling structure (700) is adapted to contact and exchange heat with the steam within the installation space (110); A drain pipe (800) is adapted to communicate with the bottom of the housing structure (100); the condensate in the installation space (110) flows out through the drain pipe (800).

8. A steam treatment apparatus as claimed in any one of claims 1 to 4, wherein The fan structure (300) includes: An axial flow fan (310) is provided, wherein the outlet end of the axial flow fan (310) is adapted to communicate with the air intake structure (200); An air intake pipe (320) is provided, the ends of which are connected to the axial flow fan (310) and the outside world respectively; the axial flow fan (310) is adapted to drive outside air toward the air intake structure (200).

9. A steam treatment device according to claim 8, wherein, The fan structure (300) also includes: An air inlet diffuser (330) is disposed between the air inlet pipe (320) and the axial flow fan (310); the cross-sectional area of ​​the air inlet diffuser (330) gradually increases along the direction of airflow from the outside; the air inlet diffuser (330) is adapted to reduce the velocity of the outside air.

10. A steam treatment device according to claim 8, wherein The fan structure (300) also includes: An air intake convergence pipe (340) is disposed between the axial flow fan (310) and the air intake structure (200); the cross-sectional area of ​​the air intake convergence pipe (340) gradually decreases along the direction of external air flow, and the flow velocity of the external air passing through the air intake convergence pipe (340) increases.

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