Pipe humidifying device suitable for pressurized building and pressurized building humidifying system

Abstract

The application discloses a pipeline humidifying device suitable for a pressurized building and a pressurized building humidifying system. One end of the pipeline humidifying device is connected with a pressurizing device through a pipeline, and the other end is communicated with the pressurized building through a pipeline. The pipeline humidifying device comprises a pipe body, a wet membrane and a water injection part. The pipe body is provided with a structure for butt joint with the pipeline at both ends. The wet membrane is suspendedly installed in the middle of the pipe body. The wet membrane is developed into a cylindrical shape, and the center line of the wet membrane is coincident with the center line of the pipe body. The water injection part is installed on the pipe body, and is connected with an external water source. The water injection part is used for guiding water to the wet membrane by control, and can avoid water backflow caused by pressure relief of the pipe body and air pressure in the pipe body. Capillary tissues capable of diffusing water are distributed on the wet membrane. When air flows through the pipe body, the water on the wet membrane can be evaporated, so that the air introduced into the pressurized building is humidified. The pipeline humidifying device can on-line humidify fresh air of the pressurized building, does not occupy internal space of the pressurized building, has high humidifying efficiency, low maintenance cost and does not consume extra energy.

Description

Technical Field

[0001] This invention relates to building humidification, specifically to a pipe humidification device and a humidification system for pressurized buildings. Background Technology

[0002] A comfortable indoor living environment requires suitable air humidity inside the building. However, pressurized buildings have low internal humidity for the following reasons: 1) Geographical reasons: Pressurized buildings are used in high-altitude areas, which are generally located in cold and frigid climate zones. These climate zones are characterized by low relative humidity, especially in winter; 2) Technical reasons: The indoor air of pressurized buildings comes from the outside. In winter, the indoor air is heated by heating facilities, and the indoor relative humidity will further decrease after the air temperature is increased.

[0003] To improve the comfort of pressurized buildings, it is necessary to increase the humidity inside the pressurized buildings. Existing humidification systems for pressurized buildings are no different from those for ordinary buildings, and can be basically divided into several types: high-pressure spray humidification, steam humidification, wet film humidification, permeable film humidification, and ultrasonic humidification. Each type of humidification system is connected in series with the fresh air system.

[0004] The humidification systems currently used in pressurized buildings have the following disadvantages: 1) High energy consumption: Existing humidification systems all require additional energy input, such as heating water to turn it into steam, or pressurizing water to create mist through impact and ultrasound, all of which consume a lot of energy; 2) Large size: The unit area cost of pressurized buildings is much higher than that of ordinary buildings, requiring intensive use of space. Traditional humidification systems are not airtight and cannot withstand large pressure differences, so the device needs to be installed in the pressurized space, reducing the space utilization rate of pressurized buildings; 3) Difficult maintenance: Existing humidification systems suffer from mold growth inside the device due to dampness, requiring regular maintenance, and the large size of the device makes maintenance difficult; 4) Limited performance: Existing humidification systems only have humidification function. Summary of the Invention

[0005] One objective of this invention is to provide a duct humidification device suitable for pressurized buildings. This duct humidification device can humidify the pressurized fresh air leading to the pressurized building online without occupying the internal space of the pressurized building. It has high humidification efficiency, low maintenance cost, and does not consume additional energy. Another objective of this invention is to provide a pressurized building humidification system that includes the above-mentioned duct humidification device. In addition to having the performance of the above-mentioned duct humidification device, it can also reduce air conditioning energy consumption and heating energy consumption.

[0006] The technical solution adopted in this invention is: A duct humidification device suitable for pressurized buildings is disclosed. One end of the duct humidification device can be connected to the pressurization equipment via a pipe, and the other end can be connected to the pressurization building via a pipe. The duct humidification device includes a pipe body, a wet film, and a water injection section. Both ends of the pipe body are provided with structures for connecting to the pipe. The wet film is suspended in the middle of the pipe body, unfolded into a cylindrical shape, and its center line coincides with the center line of the pipe body. The water injection section is installed on the pipe body and is connected to an external water source. It is used to guide water to the wet film through control and can avoid water backflow caused by depressurization of the pipe body and air pressure inside the pipe body. The wet film is distributed with capillary tissue that can diffuse moisture. When the airflow passes through the pipe body, it can evaporate the moisture on the wet film, thereby humidifying the air introduced into the pressurization building.

[0007] Preferably, the pipeline humidification device further includes an annular component for unfolding and suspending the wet film, wherein the wet film is wound and fixed on multiple annular components to form a cylindrical shape with openings at the front and back, and the annular components are connected to the inner wall of the pipe.

[0008] Preferably, the wet film is connected to two annular members at each of its two ends, and the two annular members pull the wet film apart to prevent it from sagging to the inner wall of the tube; or, the wet film is connected to two annular members at each of its two ends, and the wet film is connected to at least one annular member along the line, and each annular member spreads the wet film apart to prevent it from sagging to the inner wall of the tube.

[0009] Preferably, the wet membrane is configured as a cylindrical shape with large ends and a small middle by all the annular parts, so that the airflow can be accelerated when passing through the wet membrane.

[0010] Preferably, the annular component is a fixed ring with a non-adjustable size, or the annular component is a hoop with an adjustable size; the annular component is fixed to the inner wall of the pipe by short rods along the line.

[0011] Preferably, the water injection section includes a water injection pipe, which is sealed and installed on the pipe body with its upper end for connecting to an external water source and its lower end attached to the top of the wet film in the direction of gravity. The water injection pipe is provided with a shut-off valve for controlling the on / off state and a one-way valve for preventing pressure relief and water backflow. The shut-off valve is located downstream of the one-way valve, and the one-way valve allows water in the water injection pipe to flow only from the one-way valve to the shut-off valve.

[0012] Preferably, the lower end of the water injection pipe is located at the front of the wet film; or, the lower end of the water injection pipe is provided with multiple branches, each branch being distributed along the top of the wet film in the direction of gravity.

[0013] Preferably, the bottom of the pipe body is provided with a sunken water collection tank, and the bottom of the water collection tank is provided with a drain pipe for draining the accumulated water; the drain pipe is made of transparent section to observe the internal water accumulation, or the drain pipe is equipped with a water level gauge to observe the internal water accumulation; the drain pipe is provided with two valves, one at the top and one at the bottom.

[0014] Preferably, the duct humidification device further includes a baffle for blocking airflow from passing over the outside of the wet film; the baffle is installed at the inlet end of the pipe and is located in the annulus between the pipe and the wet film; the baffle is continuously arranged in a ring shape, or the baffle is arranged at intervals along the pipe.

[0015] A pressurized building humidification system includes a pressurization device, a pressurized fresh air duct, and a water supply device. The pressurization device is used to provide pressurized fresh air to the pressurized building through the pressurized fresh air duct, and the pressurized fresh air duct is equipped with the aforementioned humidification device. The water supply device includes a water supply pipeline, the upstream of which is connected to an external water source, the middle of which consists of a parallel heating section and a non-heating section, and the downstream of which is connected to a water injection unit through a flow regulating device. The heating section can use solar energy to heat the water passing through it. The heating section and the non-heating section are switched on by a switching device to be put into use. The heating section is connected to the water supply point of the pressurized building.

[0016] The beneficial effects of this invention are: For the duct humidification device: During operation, pressurized fresh air enters the duct body from the upwind section. Simultaneously, the water injection unit introduces external water into the wet film. The water on the wet film diffuses under its own gravity, capillary action of the capillary tissue on the wet film, and the wind-driven action of the pressurized fresh air inside the duct, thereby increasing the area of ​​the wet film wetted by moisture. This increases the contact area between moisture and air inside the duct, accelerating the evaporation of moisture. The evaporated water vapor directly mixes into the pressurized fresh air and enters the downwind section with it, ultimately reaching the pressurized building. This achieves online humidification of the pressurized fresh air leading to the pressurized building. All components are located outside the pressurized building and do not occupy internal space. The pressurized fresh air exiting the pressurization equipment is characterized by high temperature and high wind speed. According to Dalton's law of evaporation, high temperature and high wind speed can significantly increase moisture evaporation (Dalton's law of evaporation formula is W=C(Ee) / p). In the formula: W is the rate of water evaporation; E is the saturated vapor pressure of water at a constant temperature, with a larger value for E as the temperature increases; e is the actual partial pressure of water vapor in the air; C is a proportionality coefficient related to wind speed, with a larger value for C as the wind speed increases. Therefore, water on the wet film can rapidly diffuse and accelerate evaporation under the combined effects of gravity, capillary action, and wind-driven action, and can be further accelerated by the high temperature and high speed characteristics of pressurized fresh air. Thus, it effectively utilizes the characteristics of pressurized buildings, resulting in high humidification efficiency. This duct humidification device uses the pipe body as the main body and installation foundation. The installation and removal methods are the same as other pipe sections. While other types of humidification systems require additional components for installation, this duct humidification device only requires the installation of the pipe body, and the loading and unloading methods are similar. It is convenient; moreover, when humidification is not needed, the introduction of external water can be stopped, and the residual moisture on the wet film will be quickly dried by the high-temperature and high-speed pressurized fresh air. Afterwards, the high-temperature and high-speed pressurized fresh air will keep the temperature inside the pipe continuously high, so there is no need for anti-mold treatment, resulting in low maintenance costs; in addition, this duct humidification device uses the steam from the evaporation of liquid water to humidify the air. The energy for the evaporation of liquid water comes entirely from the high-temperature and high-speed pressurized fresh air passing through the pipe, utilizing the characteristics of the pressurized building itself, without consuming additional energy to achieve humidification; furthermore, the structure of this duct humidification device is simple, not only low in cost, but also the direction of the wet film inside the pipe is the same as the airflow direction, the internal components of the pipe have a limited reduction in the flow area of ​​the pressurized fresh air, and the wind resistance is low.

[0017] The wet film is designed as a cylinder that is large at both ends and small in the middle, which can accelerate the airflow when it passes through the wet film, thereby enhancing the evaporation efficiency of the water on the wet film.

[0018] In the water injection section, the shut-off valve can immediately stop water injection and prevent pressure leakage when it is closed. When the shut-off valve is open, the external water source injects water onto the wet film through the check valve and the shut-off valve. Because of the use of the check valve, water backflow caused by high pressure in the pipe body can be avoided. Furthermore, when the shut-off valve is opened to inject water, a water head will quickly form to create a water seal, which can also prevent pressure leakage.

[0019] When the wet film is short, the lower end of the water injection pipe can be placed only at the front of the wet film to ensure the degree of water diffusion. When the wet film is long, the branches of the lower end of the water injection pipe can be distributed along the top of the wet film in the direction of gravity to allow water to diffuse along the wet film as much as possible, avoid water concentration, and ensure that there is water along the wet film and that evaporation can be achieved.

[0020] When too much water is added or the pressurized fresh air is insufficient, water will fall into the bottom of the pipe. At this time, the pressurized fresh air will cause the water to spread along the pipe, which is not conducive to rust prevention and humidity control. Therefore, a water collection tank is used to collect the water and a drain pipe is used to drain it. When internal water is observed, first open the upper valve to let the water fall onto the lower valve, then close the upper valve and then open the lower valve. In this way, the water can be drained without depressurization.

[0021] When pressurized fresh air passes through the outside of the wet membrane, it will cause the wet membrane to contract inward, which may cause the water injection part to lose contact with the wet membrane. It may also cause the water to be blown away by the strong wind before it has fully diffused. Therefore, it is necessary to allow all or most of the pressurized fresh air to pass through the inside of the wet membrane. Thus, a baffle is used in the annulus between the pipe and the wet membrane.

[0022] For the humidification system: During summer humidification, the switching device activates the non-heating section, allowing unheated water to enter the injection section. The low-temperature water (significantly lower than the temperature of the pressurized fresh air) undergoes both heating and evaporation processes within the pipes, absorbing heat energy from the air. This reduces the temperature of the pressurized fresh air entering the pressurized building, thus lowering air conditioning energy consumption. During winter humidification, the switching device activates the heating section, allowing heated water to enter the injection section. The high-temperature water (higher than the temperature of the pressurized fresh air) further heats the pressurized fresh air within the pipes, increasing the temperature of the pressurized fresh air entering the pressurized building and reducing heating energy consumption. Using solar energy to heat the water source does not increase the energy consumption for heating the water. Furthermore, during humidification, the flow rate of external water entering the injection section can be controlled to regulate humidity. When not humidifying, solar energy can be used to heat the water supply in the pressurized building. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the pipe humidification device suitable for pressurized buildings in Embodiment 1 of the present invention. Figure 1 .

[0025] Figure 2 This is a perspective view of the pipe humidification device suitable for pressurized buildings in Embodiment 1 of the present invention. Figure 2 .

[0026] Figure 3 This is a cross-sectional view of a pipe humidification device applicable to pressurized buildings in Embodiment 1 of the present invention.

[0027] Figure 4 This is a cross-sectional view of the pipe humidification device applicable to pressurized buildings in Embodiment 2 of the present invention.

[0028] Figure 5 This is a cross-sectional view of the pipe humidification device applicable to pressurized buildings in Embodiment 3 of the present invention.

[0029] Figure 6 This is a cross-sectional view of the pipe humidification device applicable to pressurized buildings in Embodiment 4 of the present invention.

[0030] Figure 7 This is a cross-sectional view of the pipe humidification device applicable to pressurized buildings in Embodiment 5 of the present invention.

[0031] Figure 8 This is a front view of the duct humidification device applicable to pressurized buildings in Embodiment 6 of the present invention.

[0032] Figure 9 This is a schematic diagram of the pressurized building humidification system in Embodiment 7 of the present invention.

[0033] Figure 10 This is a schematic diagram of the pressurized building humidification system in Embodiment 8 of the present invention.

[0034] In the diagram: 1-pipe body; 2-wet film; 3-water injection section; 4-pipe interface; 5-ring component; 6-short rod; 7-water injection pipe; 8-one-way valve; 9-stop valve; 10-water collection tank; 11-drain pipe; 12-valve; 13-branch; 14-baffle; 15-switching component; 16-flow regulating component. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this application, it should be noted that the terms "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0039] Furthermore, terms such as "horizontal setting" and "horizontal placement" do not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] The features and performance of this application will be further described in detail below with reference to the embodiments.

[0042] Example 1 This embodiment discloses a piped humidification device suitable for pressurized buildings. One end of the piped humidification device can be connected to the pressurization equipment via a pipe, and the other end can be connected to the pressurized building via a pipe. Figures 1 to 3 As shown, the pipeline humidification device includes a pipe body 1, a wet film 2, and a water injection section 3; wherein: both ends of the pipe body 1 are provided with structures for connecting to pipelines, that is, both ends of the pipe body 1 are provided with pipeline interfaces 4, see Figures 1 to 3 The wet membrane 2 is suspended in the middle of the tube 1, unfolded into a cylindrical shape with its centerline coinciding with the centerline of the tube 1, as shown in the figure. Figures 1 to 3 The water injection section 3 is installed on the pipe body 1 and is connected to an external water source. It is used to guide water to the wet membrane 2 through control and can prevent water backflow caused by depressurization of the pipe body 1 and air pressure inside the pipe body 1. See Figures 1 to 3The wet membrane 2 has capillary tissues that can diffuse moisture. When the airflow passes through the tube 1, it can evaporate the moisture on the wet membrane 2, thereby humidifying the air introduced into the pressurized building.

[0043] During work: The humidification device is installed as a humidification section on the pressurized fresh air duct. The pressurized fresh air enters the duct body 1 from the upwind section. At the same time, the water injection section 3 introduces external water into the wet membrane 2. The water on the wet membrane 2 diffuses under its own gravity, the capillary action of the capillary tissue on the wet membrane 2, and the wind drive of the pressurized fresh air in the duct body 1, thereby increasing the area of ​​the wet membrane wetted by water, and thus increasing the contact area between water and air in the duct body 1. This accelerates the evaporation of water in the duct body 1. The evaporated water vapor is directly mixed into the pressurized fresh air and enters the downwind section with the pressurized fresh air, and finally flows into the pressurized building, realizing online humidification of the pressurized fresh air leading to the pressurized building.

[0044] The pressurized fresh air from the pressurization equipment is characterized by high temperature and high wind speed. According to Dalton's law of evaporation, high temperature and high wind speed can significantly increase the evaporation of water (Dalton's law of evaporation formula is W=C(Ee) / p, where: W is the rate of evaporation of water surface; E is the saturated vapor pressure of water at a constant temperature, and the higher the temperature, the larger the value of E; e is the actual water vapor partial pressure of air; C is a proportionality coefficient related to wind speed, and the higher the wind speed, the larger the value of C). Therefore, the water on the wet film 2 can rapidly diffuse under the action of gravity, capillary action, and wind drive to accelerate evaporation, and can also be further accelerated by the high temperature and high speed characteristics of the pressurized fresh air. Therefore, the characteristics of pressurized buildings are effectively utilized, resulting in high humidification efficiency.

[0045] In this embodiment, preferably: Figures 1 to 3 As shown, the pipeline humidification device also includes an annular component 5 for unfolding the wet film 2 and suspending the wet film 2 in mid-air. The wet film 2 is wrapped and fixed on multiple annular components 5 to form a cylindrical shape with openings at the front and back. The annular components 5 are connected to the inner wall of the pipe body 1. Furthermore, in this embodiment: the wet membrane 2 is initially sheet-like. The front and rear ends of the wet membrane 2 are connected to the annular member 5, and after unfolding by the annular member 5, it forms a complete cylindrical shape or a cylindrical shape with a mating gap. When the design, processing, and installation meet the standards, the wet membrane 2 can form a complete cylindrical shape. However, if there are errors, a mating gap may exist in the cylindrical shape. A small mating gap will not affect the humidification function or the humidification efficiency. The wet membrane 2 and the annular member 5 can be fixed by structural adhesive, using adhesive suitable for fixing the flexible wet membrane 2. The annular member 5 can be a fixed ring with a fixed size or an adjustable clamp. When the design and processing of the wet membrane 2 and the annular member 5 meet the standards, even using a fixed ring can ensure the fit between the wet membrane 2 and the annular member 5. When there are errors, the clamp can adjust its own size, thus adapting well to the size of the wet membrane 2. Figures 1 to 3As shown, the annular component 5 is supported and fixed to the inner wall of the pipe body 1 by short rods 6 along the line. The number of short rods 6 on the annular component 5 is preferably 2 to 8. Too few short rods 6 will result in unreliable connections, while too many will affect the passage of pressurized fresh air. The short rods 6 are preferably evenly distributed to avoid affecting the distribution of pressurized fresh air. Figures 1 to 3 As shown, the wet membrane 2 is connected to two annular pieces 5 at both ends. The two annular pieces 5 pull the wet membrane 2 apart to prevent it from sagging to the inner wall of the tube body 1.

[0046] In this embodiment, the pipe interface 4 can connect to conventional pipe sections that do not have humidification function and other humidification sections. The pipe interface 4 can adopt one of the following: threaded connection, clamp connection, flange connection, and compression fitting connection.

[0047] In this embodiment, the front end of the wet membrane 2 is 1-5 cm inside the front end of the tube body 1, the rear end of the wet membrane 2 is 1-5 cm inside the rear end of the tube body 1, the diameter of the tubular shape of the wet membrane 2 is 0.3-0.8 times the diameter of the tube body 1, and the contact position between the lower end of the water injection part 3 and the top of the wet membrane 2 is 1-3 cm away from the front end of the wet membrane 2.

[0048] In this embodiment, the water injection section 3 and the pipe body 1 are sealed by welding.

[0049] This duct humidification device uses pipe body 1 as the main body and installation foundation. Installation and removal are the same as other pipe sections. While other types of humidification systems require additional components, this duct humidification device only requires pipe body 1, and is easy to install and remove. Furthermore, all components are located outside the pressurization building, not occupying internal space. When humidification is not needed, external water can be stopped, and residual moisture on the wet film 2 will be quickly dried by high-temperature, high-speed pressurized fresh air. The high-temperature, high-speed pressurized fresh air then maintains a consistently high temperature inside pipe body 1, eliminating the need for anti-mold treatment and reducing maintenance costs. This duct humidification device utilizes the vapor from liquid water evaporation to humidify the air. The energy for liquid water evaporation comes entirely from the high-temperature, high-speed pressurized fresh air passing through pipe body 1, leveraging the characteristics of the pressurization building itself without consuming additional energy. Moreover, the duct humidification device has a simple structure, resulting in low cost. The direction of the wet film 2 inside pipe body 1 is the same as the airflow direction, and the internal components of pipe body 1 have a limited reduction in the flow area of ​​the pressurized fresh air, resulting in low wind resistance.

[0050] Example 2 This embodiment discloses a second type of pipe humidification device suitable for pressurized buildings: such as Figure 4As shown, the wet membrane 2 is connected to two annular members 5 at each end, and the wet membrane 2 is connected to at least one annular member 5 along its length. Each annular member 5 unfolds the wet membrane 2 to prevent it from sagging to the inner wall of the tube body 1. The annular members 5 at both ends of the wet membrane 2 are necessary because they can maintain the shape of the front and rear ends of the wet membrane 2 and prevent them from affecting the passage of fresh air. When the axial length of the wet membrane 2 is relatively short, the wet membrane 2 can be kept suspended by the pull of the annular members 5 at both ends. However, when the axial length of the wet membrane 2 is relatively long or has a variable diameter structure, additional annular members 5 are required.

[0051] This embodiment specifically discloses a water injection section 3: In this embodiment, as shown... Figure 4 As shown, the water injection section 3 includes a water injection pipe 7, which is sealed and installed on the pipe body 1. The upper end of the water injection pipe 7 is used to connect to an external water source, and the lower end is attached to the top of the wet membrane 2 in the direction of gravity. The water injection pipe 7 is equipped with a shut-off valve 9 for controlling the on / off state and a one-way valve 8 for preventing pressure leakage and water backflow. The shut-off valve 9 is downstream of the one-way valve 8, and the one-way valve 8 ensures that water in the water injection pipe 7 can only flow from the one-way valve 8 to the shut-off valve 9. When the shut-off valve 9 is closed, water injection can be stopped immediately and pressure leakage can be prevented. When the shut-off valve 9 is open, the external water source injects water onto the wet membrane 2 through the one-way valve 8 and the shut-off valve 9. Due to the use of the one-way valve 8, water backflow caused by high pressure in the pipe body 1 can be avoided. Furthermore, when the shut-off valve 9 is opened for water injection, a water head is quickly formed to create a water seal, which also prevents pressure leakage.

[0052] In this embodiment: as Figure 4 As shown, the lower end of the water injection pipe 7 is located at the front of the wet film 2. When the wet film 2 is short, the lower end of the water injection pipe 7 can be located only at the front of the wet film 2 to ensure the degree of water diffusion. Example 3 This embodiment discloses a third type of pipe humidification device suitable for pressurized buildings: such as Figure 5 As shown, the wet film 2 is cylindrical with all annular components 5 arranged in a shape that is larger at both ends and smaller in the middle, so that the airflow can be accelerated when passing through the wet film 2. The cylindrical shape of the wet film 2, which is larger at both ends and smaller in the middle, can accelerate the airflow when passing through the wet film 2, thereby enhancing the evaporation efficiency of water on the wet film 2.

[0053] Example 4 This embodiment discloses a fourth type of pipe humidification device suitable for pressurized buildings: such as Figure 6As shown, the bottom of the pipe body 1 is equipped with a sunken water collection tank 10, and the bottom of the water collection tank 10 is equipped with a drain pipe 11 for draining accumulated water. The drain pipe 11 has a transparent section to observe the internal water accumulation, or the drain pipe 11 is equipped with a water level gauge to observe the internal water accumulation. The drain pipe 11 is equipped with two valves 12, one above and one below. When too much water is added or the pressurized fresh air is insufficient, water will fall into the bottom of the pipe body 1. At this time, the pressurized fresh air will carry the accumulated water to spread along the pipe, which is not conducive to rust prevention and humidity control. Therefore, the water collection tank 10 is used to collect the accumulated water and the drain pipe 11 is used to drain it. When internal water accumulation is observed, the upper valve 12 is opened first to let the accumulated water fall onto the lower valve 12, then the upper valve 12 is closed, and then the lower valve 12 is opened again. In this way, the water can be drained without depressurization.

[0054] Example 5 This embodiment discloses a fifth type of pipe humidification device suitable for pressurized buildings: such as Figure 7 As shown, the lower end of the water injection pipe 7 has multiple branches 13, and each branch 13 is distributed along the top line of the wet film 2 in the direction of gravity. When the wet film 2 is long, distributing the branches 13 at the lower end of the water injection pipe 7 along the top line of the wet film 2 in the direction of gravity allows water to diffuse along the wet film 2 as much as possible, avoids water concentration, and ensures that there is water along the wet film 2 and that evaporation can be achieved.

[0055] Example 6 This embodiment discloses a sixth type of pipe humidification device suitable for pressurized buildings: such as Figure 8 As shown, the duct humidification device also includes a baffle 14 for blocking airflow from passing through the outside of the wet membrane 2; the baffle 14 is installed at the inlet end of the pipe body 1 and is located in the annular space between the pipe body 1 and the wet membrane 2; the baffle 14 is continuously arranged in a ring shape, or the baffle 14 is arranged at intervals along the pipe body 1. When the pressurized fresh air passes through the outside of the wet membrane 2, it will cause the wet membrane 2 to have an inward contraction force, which may cause the water injection part 3 to lose contact with the wet membrane 2, and may also cause the water to be blown away by the strong wind before it has fully diffused. Therefore, it is necessary to allow all or most of the pressurized fresh air to pass through the inside of the wet membrane 2, hence the baffle 14 is placed in the annular space between the pipe body 1 and the wet membrane 2.

[0056] Example 7 This embodiment discloses a pressurized building humidification system: such as Figure 9 As shown, it includes a pressurization device, a pressurized fresh air duct, and a water supply device. The pressurization device is used to provide pressurized fresh air to the pressurized building through the pressurized fresh air duct, and the pressurized fresh air duct is equipped with the aforementioned duct humidification device. The water supply device includes a water supply pipeline, the upstream of which is connected to an external water source, the middle of which consists of a parallel heating section and a non-heating section, and the downstream of which is connected to the water injection unit through a flow regulating device 16. The heating section can use solar energy to heat the water passing through it. The heating section and the non-heating section are switched on by a switching device 15 to be put into use. The heating section is connected to the water supply point of the pressurized building.

[0057] During summer humidification: Switch 15 puts the non-heating section into use, and the water source enters the water injection section without being heated. The low-temperature water (the water source temperature is significantly lower than the temperature of the pressurized fresh air) undergoes two processes in the pipe body 1: heating and evaporation. Both processes absorb heat energy from the air, thus reducing the temperature of the pressurized fresh air delivered into the pressurized building, thereby reducing air conditioning energy consumption.

[0058] When humidifying in winter: Switching component 15 puts the heating section into use. After the water source is heated, it enters the water injection section 3. The high-temperature water (the temperature of the water source after heating is higher than the temperature of the pressurized fresh air) further heats the pressurized fresh air in the pipe body 1, which can increase the temperature of the pressurized fresh air sent into the pressurized building, thereby reducing the heating energy consumption. Using solar energy to heat the water source will not increase the energy consumption for heating the water.

[0059] When humidifying, the flow rate of external water entering the water injection unit 3 can be controlled by the flow regulator 16, thereby controlling the humidity; when not humidifying, solar energy can be used to heat the pressurized building water.

[0060] In this embodiment, the flow regulating component 16 can be a flow valve, the switching component 15 can be a three-way valve, and the heating section can be heated by a solar water heater.

[0061] In this embodiment, a single humidification section is installed on the pressurized fresh air duct. The front end of the humidification section is connected to the air outlet of the pressurization equipment via an upwind duct section, the length of which is preferably 0.1-0.5m. The higher the temperature and velocity of the pressurized fresh air entering the humidification section, the higher the humidification efficiency. However, the temperature and velocity of the pressurized fresh air gradually decrease after it exits the air outlet of the pressurization equipment. Therefore, the humidification section needs to be as close as possible to the air outlet of the pressurization equipment. However, if it is too close to the air outlet, the gas impact will affect the service life of the wet membrane 2. Therefore, the distance between the humidification section and the air outlet of the pressurization equipment is adjusted by controlling the length of the upwind duct section. When the length of the upwind duct section is 0.1-0.5m, the humidification effect and the service life of the wet membrane 2 are both at their best, and the humidification requirements can be met even with a single humidification section.

[0062] Example 8 This embodiment discloses a second type of pressurized building humidification system: such as Figure 10 As shown, two humidification sections are installed in series on the pressurized fresh air duct. Of course, the humidification sections can also be distributed throughout the pressurized fresh air duct.

[0063] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A duct humidification device suitable for pressurized buildings, characterized in that: One end of the duct humidification device can be connected to the pressurization equipment via a pipe, and the other end can be connected to the pressurization building via a pipe. The duct humidification device includes a pipe body, a wet film, and a water injection section. Both ends of the pipe body are provided with structures for connecting to the pipe. The wet film is suspended in the middle of the pipe body, unfolded into a cylindrical shape, and its center line coincides with the center line of the pipe body. The water injection section is installed on the pipe body and is connected to an external water source. It is used to guide water to the wet film through control and can avoid water backflow caused by depressurization of the pipe body and air pressure inside the pipe body. The wet film is distributed with capillary tissue that can diffuse moisture. When the airflow passes through the pipe body, it can evaporate the moisture on the wet film, thereby humidifying the air introduced into the pressurization building. The pipeline humidification device also includes an annular component for unfolding and suspending the wet film. The wet film is wrapped and fixed on multiple annular components to form a cylindrical shape with openings at the front and back. The annular components are connected to the inner wall of the pipe. The wet membrane is connected to two annular members at each end, and the two annular members pull the wet membrane apart to prevent it from sagging to the inner wall of the tube; or, the wet membrane is connected to two annular members at each end, and the wet membrane is connected to at least one annular member along the axial line in the middle, and each annular member spreads the wet membrane apart to prevent it from sagging to the inner wall of the tube. The wet membrane is designed with all annular components in a cylindrical shape that is large at both ends and small in the middle, so that the airflow can be accelerated when it passes through the wet membrane; The duct humidification device also includes a baffle for blocking airflow from passing over the outside of the wet film; the baffle is installed at the inlet end of the pipe and is located in the annular space between the pipe and the wet film; the baffle is continuously arranged in a ring shape, or the baffle is arranged at intervals along the pipe.

2. The pipe humidification device suitable for pressurized buildings as described in claim 1, characterized in that: The annular component is a fixed ring with a non-adjustable size, or the annular component is a hoop with an adjustable size; the annular component is supported and fixed to the inner wall of the tube by short rods along the circumferential line.

3. The pipe humidification device suitable for pressurized buildings as described in claim 1, characterized in that: The water injection section includes a water injection pipe, which is sealed and installed on the pipe body. The upper end of the water injection pipe is used to connect to an external water source, and the lower end is attached to the top of the wet film in the direction of gravity. The water injection pipe is equipped with a shut-off valve for controlling the on-off state and a one-way valve for preventing pressure relief and water backflow. The shut-off valve is located downstream of the one-way valve. The one-way valve allows water in the water injection pipe to flow only from the one-way valve to the shut-off valve.

4. The duct humidification device suitable for pressurized buildings as described in claim 3, characterized in that: The lower end of the water injection pipe is located at the front of the wet film; or, the lower end of the water injection pipe has multiple branches, each branch being distributed along the top of the wet film in the direction of gravity.

5. The duct humidification device suitable for pressurized buildings as described in claim 1, 3, or 4, characterized in that: The bottom of the pipe is equipped with a sunken water collection tank, and the bottom of the water collection tank is equipped with a drain pipe for draining the accumulated water; the drain pipe has a transparent section to observe the water inside, or the drain pipe is equipped with a water level gauge to observe the water inside; the drain pipe is equipped with two valves, one at the top and one at the bottom.

6. A pressurized building humidification system, characterized in that: It includes a pressurization device, a pressurized fresh air duct, and a water supply device; the pressurization device is used to provide pressurized fresh air to the pressurized building through the pressurized fresh air duct, and the pressurized fresh air duct is provided with a duct humidification device suitable for pressurized buildings as described in any one of claims 1 to 5; The water supply device includes a water supply pipeline. The upstream of the water supply pipeline is connected to an external water source, the middle section consists of a heating section and a non-heating section connected in parallel, and the downstream section is connected to the water injection unit through a flow regulating device. The heating section can use solar energy to heat the water passing through it. The heating section and the non-heating section can be switched to be put into use by a switching device. The heating section is connected to the building water supply point for boosting.

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