Water spraying mechanism for humidifying fresh air system

Abstract

The invention relates to the technical field of energy-saving heat exchange devices, and discloses a water spraying mechanism for humidifying a fresh air system, the water spraying mechanism is arranged in a heat exchange and humidification integrated section of a fresh air indoor unit, the heat exchange and humidification integrated section comprises a heat exchange pipe and a water spraying mechanism, and the heat exchange pipe communicates with a coolant conveying pipe and is used for conveying a coolant; the water spraying mechanism comprises a water tank, a make-up pump, a water spraying pump, a water spraying tank and a drainer, the heat exchange pipe is arranged on the water tank, the make-up pump is used for supplementing water into the water tank, the water spraying pump is used for supplementing water in the water tank into the water spraying tank, the drainer is used for draining condensate water and sewage in the water tank, and the water spraying tank is installed above the heat exchange pipe and used for spraying water on the heat exchange pipe. And a high-low water level detection module is also arranged in the water tank. The problems that a traditional fresh air indoor unit heat exchange humidification assembly is independently arranged, so that the size is large, installation is complex, the heat exchange efficiency is low, a humidification water tank is prone to breeding bacteria, dust is accumulated on the surface of a heat exchanger, and condensate water and a humidification water system are separated in function are solved.

Description

Technical Field

[0001] This invention relates to the field of energy-saving heat exchange device technology, specifically a water spraying mechanism for humidifying a fresh air system. Background Technology

[0002] In the field of fresh air systems, the heat exchange and humidification functions of the indoor unit are crucial for ensuring indoor air comfort. In existing technologies, traditional indoor units typically employ a structure where the heat exchanger and humidification components are arranged independently. The heat exchanger is solely responsible for heating or cooling the fresh air to meet indoor temperature regulation needs; the humidification components (such as ultrasonic humidifiers, electrode humidifiers, etc.) are installed separately in the fresh air supply path to increase the humidity of the fresh air.

[0003] However, the aforementioned independent arrangement structure has several technical drawbacks: First, separating the heat exchange and humidification components requires reserving installation space within the fresh air unit, significantly increasing the overall size of the unit and hindering miniaturization design. It also increases installation difficulty and cost. Second, in traditional dry-pipe heat exchange mode, the heat exchanger and fresh air only have a gas-solid two-phase interface, resulting in limited heat exchange area and low heat exchange efficiency, failing to fully utilize energy. Third, the water tanks of traditional humidification components are mostly static water storage structures, which are prone to bacterial growth over long periods. These bacteria can enter the room with the humidified airflow, affecting indoor air quality and harming human health. Fourth, during long-term use, dust and impurities easily accumulate on the surface of the heat exchanger. The existing structure lacks an effective self-cleaning mechanism. The accumulation of impurities will not only further reduce the heat exchange efficiency, but may also breed bacteria and affect the stability of equipment operation. Fifth, in summer cooling mode, a large amount of condensate will be generated on the surface of the heat exchanger. In the existing structure, this part of the condensate needs to be drained by a separate drainage structure, which is independent of the water replenishment system of the humidification component. It cannot realize the rational use of water resources and the function is relatively simple. Sixth, in winter heating and humidification mode, the humidification component needs to consume additional energy to achieve water evaporation and humidification, and cannot rely on the heating heat of the heat exchanger, resulting in low energy utilization.

[0004] In summary, the existing heat exchange and humidification structures of fresh air indoor units have problems such as large size, complex installation, low heat exchange efficiency, low water resource utilization, and easy bacterial growth. There is an urgent need for a technical solution that can integrate heat exchange and humidification functions, optimize structural design, improve energy utilization, and ensure air quality to overcome the shortcomings of existing technologies. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a water spraying mechanism for humidification in a fresh air system. By integrating heat exchange and humidification functions, reusing the condensate drainage structure, and expanding the gas-liquid two-phase heat exchange interface, it achieves equipment miniaturization, improved heat exchange efficiency, self-cleaning and antibacterial properties, and efficient utilization of energy and water resources. It solves the technical problems of large size, complex installation, low heat exchange efficiency, easy bacterial growth in the humidification water tank, dust accumulation on the heat exchanger surface, and functional separation of the condensate and humidification water systems caused by the independent arrangement of heat exchange and humidification components in traditional fresh air indoor units.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A water spraying mechanism for humidification in a fresh air system is installed within the heat exchange and humidification integrated section of the indoor unit. The heat exchange and humidification integrated section includes heat exchange pipes and a water spraying mechanism. The heat exchange pipes are connected to a coolant delivery pipe for delivering coolant. The water spraying mechanism includes a water tank, a water replenishment pump, a water spraying pump, a water spraying tank, and a drain. The heat exchange pipes are mounted on the water tank. The water replenishment pump is used to add water to the water tank. The water spraying pump is used to replenish the water in the water tank to the water spraying tank. The drain is used to drain condensate and wastewater from the water tank. The water spraying tank is installed above the heat exchange pipes and is used to spray water onto the heat exchange pipes, using the heat from the heat exchange pipes to evaporate the water, thereby increasing the humidity of the fresh air. The water tank is also equipped with a high and low water level detection module.

[0007] Preferably, the heat exchange tube is disposed inside a heat exchange box, which is also provided with a dynamic adjustment mechanism for the heat exchange tube. The dynamic adjustment mechanism includes an adjustment bracket and a drive mechanism. The heat exchange tube is fixed on the adjustment bracket, which is rotatably disposed inside the heat exchange box. The drive mechanism is used to control the angle of the adjustment bracket, thereby controlling the tilt angle of the heat exchange tube. When humidification is required in winter, the heat exchange tube is set to a horizontal or near-horizontal state to prolong the residence time of water on the heat exchange tube. When condensate needs to be discharged in summer, the heat exchange tube is set to a large-angle tilt state to accelerate the discharge of condensate.

[0008] Preferably, the adjusting bracket is provided with two sets of scrapers, which are respectively attached to the inner walls on both sides of the heat exchange box; the adjusting bracket is also provided with a scraper dynamic adjustment mechanism, which is used to adjust the tilt direction of the scraper according to the rotation angle of the heat exchange tube. Specifically, when the angle of inclination of the heat exchange tube is within the range of humidification efficiency adjustment, the scraper tilts downward on the side located inside the heat exchange box; when the angle of inclination of the heat exchange tube exceeds the range of humidification efficiency adjustment, the scraper tilts upward on the side located inside the heat exchange box.

[0009] Preferably, the upper surface of the scraper is provided with multiple sets of parallel guide grooves, the cross-section of the guide grooves is arc-shaped, the guide grooves run through the entire length of the scraper, and both ends extend to the edge of the scraper.

[0010] Preferably, the adjusting bracket includes an inner bracket located at the center of the heat exchange tube and outer brackets located on both sides of the heat exchange tube. The rotation axis of the adjusting bracket is fixed on the inner bracket, and an extension plate is fixedly installed on the outer bracket on the side away from the coolant delivery pipe. The driving mechanism drives the adjusting bracket to rotate by pushing the extension plate.

[0011] Preferably, the coolant delivery pipe and the end of the heat exchange pipe are connected by a series of metal corrugated pipes and a small precision rotary joint, or by directly using a flexible metal hose resistant to high temperature and high pressure.

[0012] Preferably, the heat exchange box has a bottom plate that is higher in the middle and lower on both sides. The heat exchange box also has multiple vent holes on both sides for ventilation. The bottom of the vent holes is lower than the lowest point of the bottom plate, and the bottom plate is higher than the edge of the water tank.

[0013] Preferably, the scraper dynamic adjustment mechanism includes a rotary plate fixedly installed on each scraper rotation shaft, a lifting plate slidably installed in the outer bracket, and multiple levers fixedly installed on the lifting plate. Each lever corresponds to one of the multiple rotary plates, and the bottom of the lifting plate passes through the outer bracket.

[0014] Preferably, the heat exchange box is provided with multiple heat exchange chambers arranged along the airflow direction, each heat exchange chamber is provided with a set of heat exchange tubes, each set of heat exchange tubes is fixed on a different adjusting bracket, the adjusting brackets are fixed together, and each adjusting bracket is provided with two sets of scrapers.

[0015] Preferably, the water tank is equipped with a water spray pipe, which is connected to the outlet of the water spray pump. The bottom of the water spray pipe is equipped with multiple water spray ports, which are located directly above the heat exchange tube.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides a water spraying mechanism for humidification of a fresh air system, which has the following beneficial effects: 1. The humidification spray mechanism of this fresh air system works in two ways. First, in winter, the heat exchange tubes generate heat to evaporate the water dripping from the spray tank, achieving humidification. Second, in summer, the heat exchange tubes cool, and the condensate formed on their surface collects in the water tank of the spray mechanism, which is then drained through a drainer. Thus, the water tank simultaneously replenishes humidification water and drains condensate. Third, while humidifying using the spray mechanism, the heat exchange area is larger than that of traditional dry-pipe heat exchangers at the gas-solid interface. Furthermore, continuous spraying in winter dynamically washes the surface of the heat exchange tubes, carrying away dust and impurities back to the water tank. Finally, traditional humidification water tanks are prone to bacterial growth if water remains for extended periods, while this solution circulates and refreshes the water in the tank, preventing stagnant water accumulation. Additionally, the heating effect of the heat exchange tubes in winter inhibits bacterial growth, further reducing the bacterial content in the humidification water.

[0017] 2. The water spray mechanism used for humidification in this fresh air system has several advantages. First, it significantly improves humidification efficiency in winter. During winter heating and humidification, the drive mechanism adjusts the heat exchange tubes to a horizontal position, extending the contact time between the water flow and the heat exchange tubes. Simultaneously, the humidification efficiency can be controlled by adjusting the tilt angle of the heat exchange tubes. Controlling the water supply speed of the spray pump allows for a wide range of adjustments to the humidification effect, while the tilt angle of the heat exchange tubes allows for precise adjustment of the humidification efficiency. Second, it significantly improves condensate drainage efficiency in summer. The drive mechanism adjusts the heat exchange tubes to a tilted position, causing the condensate generated on the surface of the heat exchange tubes to quickly collect at the lower end under gravity and drip into the water tank along the guide structure of the adjustment bracket. Simultaneously, the rapidly falling condensate can wash away dust adhering to the surface of the heat exchange tubes, reducing residual dirt.

[0018] 3. The water spraying mechanism for humidification in this fresh air system firstly uses a scraper. The rotation generated by the dynamic adjustment mechanism of the heat exchange tubes drives the scraper to scrape the inner wall of the heat exchange box, preventing water droplets from accumulating on the inner wall. Secondly, the scraper also acts as a guide plate, guiding the airflow to be evenly distributed inside the heat exchange box, enhancing heat exchange efficiency. Finally, the dynamic adjustment mechanism of the scraper adjusts the angle of the scraper by rotating the heat exchange tubes. In humidification mode, it can collect the water sprayed from top to bottom to the middle, concentrating the water flow on the heat exchange tubes, improving the heating efficiency of the heat exchange tubes on the water, thereby optimizing the humidification effect. At the same time, in cooling mode, it can allow the condensate dripping from top to bottom to be discharged to both sides by the scraper, thereby accelerating the condensate drainage effect.

[0019] 4. The water spraying mechanism used for humidification in this fresh air system enhances airflow turbulence and improves the fit with the inner wall by setting parallel guide grooves on the scraper. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the fresh air indoor unit with a water spraying mechanism installed in Embodiment 1 of the present invention.

[0021] Figure 2 This is a schematic diagram of the water spraying mechanism in Embodiment 1 of the present invention.

[0022] Figure 3 This is a schematic diagram of the water pump in Embodiment 1 of the present invention.

[0023] Figure 4 This is a schematic diagram of the coolant delivery pipe in Embodiment 1 of the present invention.

[0024] Figure 5 This is a schematic diagram of the water tank in Embodiment 1 of the present invention.

[0025] Figure 6 This is a schematic diagram of the water spraying mechanism in Embodiment 2 of the present invention.

[0026] Figure 7 This is an exploded view of the heat exchange box, the dynamic adjustment mechanism of the heat exchange tube, the heat exchange tube, and the scraper in Embodiment 2 of the present invention.

[0027] Figure 8 This is a schematic diagram of the heat exchange box in Embodiment 2 of the present invention.

[0028] Figure 9 This is an assembly diagram of the heat exchange tube dynamic adjustment mechanism, heat exchange tube, and scraper in Embodiment 2 of the present invention. At this time, the scraper is tilted downward on the side located inside the heat exchange box.

[0029] Figure 10 This is a schematic diagram of the internal structure of the outer support in Embodiment 2 of the present invention.

[0030] Figure 11 This is an assembly diagram of the heat exchange tube dynamic adjustment mechanism, heat exchange tube, and scraper in Embodiment 2 of the present invention. At this time, the scraper is tilted upward on the side located inside the heat exchange box.

[0031] In the diagram: 91. Air inlet section; 92. Filter section; 93. Heat exchange and humidification integrated section; 94. Air supply section; 1. Heat exchanger tubes; 2. Spraying mechanism; 21. Water tank; 22. Water supply pump; 23. Spraying pump; 24. Spraying tank; 25. Drain; 26. Humidity sensor; 27. High and low water level sensor; 241. Spraying pipe; 3. Coolant delivery pipe; 4. Heat exchange box; 41. Vent; 42. Base plate; 5. Dynamic adjustment mechanism for heat exchange tubes; 51. External support; 52. Internal support; 53. Extension plate; 6. Scraper; 7. Scraper dynamic adjustment mechanism; 71. Rotary plate; 72. Lifting plate; 73. Paddle plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0034] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] Example 1: This embodiment provides a water spraying mechanism for humidification in a fresh air system, which has the following technical features.

[0037] Please see Figure 1-5A water spraying mechanism for humidifying a fresh air system is installed in the heat exchange and humidification integrated section 93 of the fresh air indoor unit. The heat exchange and humidification integrated section 93 includes a heat exchange pipe 1 and a water spraying mechanism 2. The heat exchange pipe 1 is connected to a coolant delivery pipe 3 for delivering coolant. The water spraying mechanism 2 includes a water tank 21, a water replenishment pump 22, a water spraying pump 23, a water spraying tank 24, and a drain 25. The heat exchange pipe 1 is installed on the water tank 21. The water replenishment pump 22 is used to replenish water into the water tank 21. The water spraying pump 23 is used to replenish the water in the water tank 21 to the water spraying tank 24. The drain 25 is used to drain the condensate and sewage in the water tank 21. The water spraying tank 24 is installed above the heat exchange pipe 1 and is used to spray water on the heat exchange pipe 1. The heat of the heat exchange pipe 1 is used to evaporate the water, thereby increasing the humidity of the fresh air. A high and low water level detection module is also installed in the water tank 21.

[0038] The humidification water spray mechanism of this fresh air system works in two ways. First, in winter, the heat exchange tube 1 heats the water dripping from the water spray tank 24, evaporating it to achieve humidification. Second, in summer, the heat exchange tube 1 cools the water, and the condensate formed on its surface collects in the water tank 21 of the water spray mechanism 2, which is then drained through the drain 25. In other words, the water tank 21 simultaneously replenishes humidification water and drains condensate. Third, while humidifying using water spray, the heat exchange area is larger than that of the gas-solid two-phase interface in traditional dry pipe heat exchange. Furthermore, continuous water spraying in winter dynamically washes the surface of the heat exchange tube 1, carrying away dust and impurities with the water flow back to the water tank. Finally, traditional humidification water tanks are prone to bacterial growth if water is left to stand for a long time, while the water in the water tank 21 of this solution is circulated and refreshed, avoiding stagnant water accumulation. At the same time, the heating of the heat exchange tube 1 in winter inhibits bacterial growth, further reducing the bacterial content in the humidification water.

[0039] Furthermore, the indoor unit for fresh air is configured with an air inlet section 91, a filter section 92, a heat exchange and humidification integrated section 93, and an air supply section 94 in sequence along the fresh air flow direction.

[0040] It should be noted that the inlet and outlet of the water supply pump 22 are connected to the water supply port of the fresh air unit and the water tank 21, respectively; the inlet and outlet of the water spray pump 23 are connected to the water tank 21 and the water spray box 24; and the inlet and outlet of the drainer 25 are connected to the water tank 21 and the drain outlet of the fresh air unit.

[0041] It should be noted that the drainer 25 can be a drain pump, with the inlet and outlet of the drain pump connected to the water tank and the fresh air unit drain outlet, drawing water out of the water tank 21 through the drain pump; or, the drainer 25 can also be a drain valve, with the inlet and outlet of the drain valve connected to the water tank 21 and the fresh air unit drain outlet, wherein the water tank 21 is higher than the fresh air unit drain outlet, and when the drain valve is opened, the condensate is discharged by gravity.

[0042] It should be noted that when humidifying in winter, if the water level in the water tank 21 is lower than the preset replenishment level, the low water level detection module will detect it and the water pump 23 will replenish the water. In summer, when humidification is not required, the water tank 21 collects the condensate generated by the heat exchange tube 1. If the water level in the water tank 21 is higher than the preset drainage level, the high water level detection module will detect it and the condensate will be discharged from the drain outlet through the drainer 25.

[0043] Furthermore, a water spraying pipe 241 is installed inside the water spraying tank 24. The water spraying pipe 241 is connected to the outlet of the water spraying pump 23. Multiple water spraying ports are installed at the bottom of the water spraying pipe 241, and the water spraying ports are located directly above the heat exchange tube 1.

[0044] Furthermore, the heat exchange tube 1 is equipped with multiple fins to increase the heat exchange area of ​​the heat exchange tube 1 and also to improve the water retention time.

[0045] Furthermore, a humidity sensor 26 and a high / low water level sensor 27 are also installed inside the water tank 21.

[0046] Example 2: This embodiment provides a water spraying mechanism for humidifying a fresh air system. The difference between this embodiment and Embodiment 1 is that the heat exchange tube 1 is installed inside the heat exchange box 4, and the heat exchange box 4 is also equipped with a dynamic adjustment mechanism 5 for the heat exchange tube.

[0047] Please see Figure 6-11 The heat exchange tube 1 is installed inside the heat exchange box 4. The heat exchange box 4 is also equipped with a dynamic adjustment mechanism 5 for the heat exchange tube. The dynamic adjustment mechanism 5 includes an adjustment bracket and a drive mechanism. The heat exchange tube 1 is fixed on the adjustment bracket. The adjustment bracket is rotatably installed inside the heat exchange box 4. The drive mechanism is used to control the angle of the adjustment bracket, thereby controlling the tilt angle of the heat exchange tube 1. When humidification is needed in winter, heat exchange tube 1 is set to a horizontal or near-horizontal state to prolong the residence time of water on heat exchange tube 1. When condensate needs to be drained in summer, heat exchange tube 1 is set to a large-angle tilt state to accelerate the drainage of condensate.

[0048] The water spray mechanism used for humidification in this fresh air system has several advantages. First, it significantly improves humidification efficiency in winter. During winter heating and humidification, the drive mechanism adjusts the heat exchange tube 1 to a horizontal position, extending the contact time between the water flow and the heat exchange tube 1. Simultaneously, the humidification efficiency can be controlled by adjusting the tilt angle of the heat exchange tube 1. Controlling the water supply speed of the water spray pump 23 allows for a wide range of adjustments to the humidification effect, while the tilt angle of the heat exchange tube 1 allows for precise adjustment of the humidification efficiency. Second, it significantly improves condensate drainage efficiency in summer. The drive mechanism adjusts the heat exchange tube 1 to a tilted position, causing the condensate generated on the surface of the heat exchange tube 1 to quickly collect at the lower end under gravity and drip into the water tank along the guide structure of the adjusting bracket. Simultaneously, the rapidly falling condensate can wash away dust adhering to the surface of the heat exchange tube, reducing residual dirt.

[0049] It should be noted that the rotation angle of heat exchange tube 1 is between 0 and 6 degrees. In summer, the angle for draining condensate is 6 degrees, and in winter, the humidification speed is fastest at 0 degrees. The larger the angle, the slower the humidification speed.

[0050] Furthermore, the adjusting bracket includes an inner bracket 52 located at the center of the heat exchange tube 1 and outer brackets 51 located on both sides of the heat exchange tube 1. The rotation axis of the adjusting bracket is fixed on the inner bracket 52, and an extension plate 53 is fixedly installed on the outer bracket 51 on the side away from the coolant delivery pipe 3. The driving mechanism drives the adjusting bracket to rotate by pushing the extension plate 53.

[0051] It should be noted that the extension plate 53 is provided with a sliding groove. The drive mechanism pushes the push rod to slide through the cylinder. The end of the push rod is movably connected in the sliding groove of the extension plate 53. Since the push rod slides up and down, and the extension plate 53 rotates, there is a gap between the upper and lower limit blocks of the push rod and the extension plate 53 to facilitate the rotation of the extension plate 53.

[0052] Furthermore, a metal corrugated pipe and a small precision rotary joint are connected in series between the coolant delivery pipe 3 and the end of the heat exchange pipe 1. The fixed end of the rotary joint is connected to the coolant delivery pipe 3, and the rotating end is connected to the inlet and outlet flanges of the heat exchange pipe. The corrugated pipe is sleeved on the outside of the rotary joint, and its two ends are sealed and welded to the flanges of the coolant delivery pipe 3 and the heat exchange pipe 1, respectively. Alternatively, a high-temperature and high-pressure resistant flexible metal hose is directly used to connect the coolant delivery pipe 3 and the end of the heat exchange pipe 1. The two ends are connected to the end of the coolant delivery pipe 3 and the end of the heat exchange pipe 1 through quick connectors, respectively. The length of the hose is reserved with a redundancy according to the maximum rotation angle of the heat exchange pipe 1 to avoid stretching or twisting during rotation.

[0053] Furthermore, the heat exchange tube 1 is provided with multiple fins. It should be noted that the fins are provided with through holes at the corresponding positions on the lower surface of the heat exchange tube 1, so as to facilitate the discharge of condensate along the heat exchange tube 1.

[0054] Furthermore, the heat exchange box 4 is provided with a bottom plate 42 that is high in the middle and low on both sides. Multiple vent holes 41 for ventilation are also provided on both sides of the heat exchange box 4. The bottom of the vent holes 41 is lower than the lowest point on both sides of the bottom plate 42, and the bottom plate 42 is higher than the edge of the water tank 21.

[0055] Example 3: This embodiment provides a water spraying mechanism for humidification of a fresh air system. The difference between this embodiment and Embodiment 2 is that a scraper 6 is also provided inside the heat exchange box 4.

[0056] Please see Figure 6-11 The adjusting bracket is equipped with two sets of scrapers 6, which are respectively attached to the inner walls on both sides of the heat exchange box 4; the adjusting bracket is also equipped with a scraper dynamic adjustment mechanism 7, which is used to adjust the tilt direction of the scraper 6 according to the rotation angle of the heat exchange tube 1. Specifically, when the tilt angle of the heat exchange tube 1 is within the range of humidification efficiency adjustment, the scraper 6 tilts downward on the side located inside the heat exchange box 4; when the tilt angle of the heat exchange tube 1 exceeds the range of humidification efficiency adjustment, the scraper 6 tilts upward on the side located inside the heat exchange box 4.

[0057] The humidification spray mechanism of this fresh air system firstly uses a scraper 6, which, through the rotation generated by the dynamic adjustment mechanism 5 of the heat exchange tube, scrapes the inner wall of the heat exchange box 4 to prevent water droplets from accumulating on the inner wall. Secondly, the scraper 6 also acts as a guide plate, guiding the airflow to be evenly distributed inside the heat exchange box 4, thereby enhancing heat exchange efficiency. Finally, the scraper dynamic adjustment mechanism 7 adjusts the angle of the scraper 6 by rotating the heat exchange tube. In humidification mode, it can collect the water sprayed from top to bottom to the middle, concentrating the water flow on the heat exchange tube 1, improving the heating efficiency of the heat exchange tube 1 on the water, thus optimizing the humidification effect. At the same time, in cooling mode, it can allow the condensate dripping from top to bottom to be discharged to both sides by the scraper 6, thereby accelerating the condensate drainage effect.

[0058] It should be noted that the tilt angle of heat exchange tube 1 within the range of humidification efficiency adjustment refers to the tilt angle range of heat exchange tube 1 under winter humidification conditions, while the tilt angle of heat exchange tube 1 exceeding the range of humidification efficiency adjustment refers to the tilt angle range of heat exchange tube 1 under summer cooling conditions.

[0059] Specifically, within the humidification efficiency adjustment range, in winter humidification mode, the rotation angle of heat exchange tube 1 is less than 4 degrees; beyond the humidification efficiency adjustment range, in summer cooling mode, the rotation angle of heat exchange tube 1 is greater than 4 degrees and less than or equal to 6 degrees.

[0060] It should be noted that when the scraper 6 is tilted downward on one side inside the heat exchange box 4, it can collect the water sprayed from above into the middle, concentrate the water flow on the heat exchange tube 1, improve the heating efficiency of the heat exchange tube 1 on the water, and thus optimize the humidification effect.

[0061] It should be noted that when the scraper 6 is tilted upward on one side inside the heat exchange box 4, the distance between the inner sides of the two sets of scrapers 6 is reduced, so that the condensate dripping from above is discharged to both sides by the scraper 6, thereby accelerating the condensate discharge effect.

[0062] The scraper dynamic adjustment mechanism 7 further includes a rotary plate 71 fixedly installed on the rotating shaft of each scraper 6, a lifting plate 72 slidably installed in the outer bracket 51, and multiple levers 73 fixedly installed on the lifting plate 72. Each lever 73 corresponds to one of the multiple rotary plates 71, and the bottom of the lifting plate 72 passes through the outer bracket 51.

[0063] It should be noted that when the tilt angle of the heat exchange tube 1 is within the range of humidification efficiency adjustment, the bottom of the lifting plate 72 passes through the bottom of the outer support 51 and the bottom of the lifting plate 72 is higher than the bottom plate 42. At this time, the rotation of the heat exchange tube 1 will not cause the lifting plate 72 to slide. After the tilt angle of the heat exchange tube 1 exceeds the range of humidification efficiency adjustment, the bottom of the lifting plate 72 contacts the bottom plate 42, thereby pushing the lifting plate 72 to slide upward, thereby using the lever 73 to push the rotating plate 71 to rotate, thereby pushing the scraper 6 to rotate.

[0064] In an optional embodiment, the heat exchange box 4 is provided with a plurality of heat exchange chambers arranged along the airflow direction. Each heat exchange chamber is provided with a set of heat exchange tubes 1. Each set of heat exchange tubes 1 is fixed on different adjusting brackets. The adjusting brackets are fixed together, and each adjusting bracket is provided with two sets of scrapers 6.

[0065] It should be noted that when there are two or more heat exchange chambers in the heat exchange box 4, the scraper 6 will lose its function of draining condensate. Therefore, when there are two or more heat exchange chambers in the heat exchange box 4, the scraper 6 is set to be in a state where one side of the heat exchange box 4 is always tilted downwards, that is, the scraper dynamic adjustment mechanism 7 is removed.

[0066] Furthermore, the heat exchange tube 1 is equipped with multiple fins. It should also be noted that the size of the fins is set so as not to affect the rotation of the scraper 6, or that the scraper 6 is equipped with slots corresponding to the positions of the fins.

[0067] In an optional embodiment, the upper surface of the scraper 6 is provided with multiple sets of parallel guide grooves. The cross-section of the guide grooves is arc-shaped, and the guide grooves run through the entire length of the scraper 6, extending to the edge of the scraper 6 at both ends.

[0068] The water spray mechanism used for humidification in this fresh air system enhances airflow turbulence while improving water guiding efficiency and increasing its fit with the inner wall.

[0069] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water spraying mechanism for humidification in a fresh air system, characterized in that, The heat exchange and humidification integrated section (93) of the fresh air indoor unit is installed. The heat exchange and humidification integrated section (93) includes a heat exchange pipe (1) and a water spraying mechanism (2). The heat exchange pipe (1) is connected to the coolant delivery pipe (3) and is used to deliver coolant. The water spraying mechanism (2) includes a water tank (21), a water replenishment pump (22), a water spraying pump (23), a water spraying tank (24), and a drain (25). The heat exchange pipe (1) is installed on the water tank (21). The water replenishment pump (22) is used to pump water into the water tank. Water is added to the tank (21). The water pump (23) is used to add water from the tank (21) to the water tank (24). The drainer (25) is used to drain the condensate and sewage from the tank (21). The water tank (24) is installed above the heat exchange tube (1). The water tank (24) is used to spray water on the heat exchange tube (1) and use the heat of the heat exchange tube (1) to evaporate the water, thereby increasing the humidity of the fresh air. The tank (21) is also equipped with a high and low water level detection module.

2. The water spraying mechanism for humidification in a fresh air system according to claim 1, characterized in that, The heat exchange tube (1) is installed in the heat exchange box (4). The heat exchange box (4) is also equipped with a dynamic adjustment mechanism (5) for the heat exchange tube. The dynamic adjustment mechanism (5) for the heat exchange tube includes an adjustment bracket and a driving mechanism. The heat exchange tube (1) is fixed on the adjustment bracket. The adjustment bracket is rotatably installed in the heat exchange box (4). The driving mechanism is used to control the angle of the adjustment bracket, thereby controlling the tilt angle of the heat exchange tube (1). When humidification is needed in winter, the heat exchange tube (1) is set to a horizontal or near-horizontal state to prolong the residence time of water on the heat exchange tube (1). When condensate needs to be discharged in summer, the heat exchange tube (1) is set to a large-angle inclined state to accelerate the discharge of condensate.

3. The water spraying mechanism for humidification in a fresh air system according to claim 2, characterized in that, Two sets of scrapers (6) are provided on the adjustment bracket. The two sets of scrapers (6) are respectively attached to the inner walls on both sides of the heat exchange box (4). A scraper dynamic adjustment mechanism (7) is also provided in the adjustment bracket to adjust the tilt direction of the scraper (6) according to the rotation angle of the heat exchange tube (1). When the angle of inclination of the heat exchange tube (1) is within the range of humidification efficiency adjustment, the scraper (6) tilts downward on the side located inside the heat exchange box (4); when the angle of inclination of the heat exchange tube (1) exceeds the range of humidification efficiency adjustment, the scraper (6) tilts upward on the side located inside the heat exchange box (4).

4. The water spraying mechanism for humidification in a fresh air system according to claim 3, characterized in that, The upper surface of the scraper (6) is provided with multiple sets of parallel guide grooves. The cross-section of the guide groove is arc-shaped. The guide groove runs through the entire length of the scraper (6) and extends to the edge of the scraper (6) at both ends.

5. The water spraying mechanism for humidification in a fresh air system according to claim 2, characterized in that, The adjusting bracket includes an inner bracket (52) located at the center of the heat exchange tube (1) and an outer bracket (51) located on both sides of the heat exchange tube (1). The rotation axis of the adjusting bracket is fixed on the inner bracket (52). An extension plate (53) is fixedly installed on the outer bracket (51) on the side away from the coolant delivery pipe (3). The driving mechanism drives the adjusting bracket to rotate by pushing the extension plate (53).

6. The water spraying mechanism for humidification in a fresh air system according to claim 2, characterized in that, The coolant delivery pipe (3) and the end of the heat exchange pipe (1) are connected by a series of metal corrugated pipes and a small precision rotary joint, or by directly using a flexible metal hose resistant to high temperature and high pressure.

7. The water spraying mechanism for humidification in a fresh air system according to claim 2, characterized in that, The heat exchange box (4) is provided with a bottom plate (42) that is high in the middle and low on both sides. The heat exchange box (4) is also provided with multiple ventilation holes (41) on both sides for ventilation. The bottom of the ventilation hole (41) is lower than the lowest point of the bottom plate (42), and the bottom plate (42) is higher than the edge of the water tank (21).

8. The water spraying mechanism for humidification in a fresh air system according to claim 3, characterized in that, The scraper dynamic adjustment mechanism (7) includes a rotary plate (71) fixedly installed on the rotating shaft of each scraper (6), a lifting plate (72) slidably installed in the outer bracket (51), and multiple levers (73) fixedly installed on the lifting plate (72). Each lever (73) corresponds to one of the multiple rotary plates (71), and the bottom of the lifting plate (72) passes through the outer bracket (51).

9. A water spraying mechanism for humidification in a fresh air system according to claim 3, characterized in that, The heat exchange box (4) is provided with multiple heat exchange chambers arranged along the airflow direction. Each heat exchange chamber is provided with a set of heat exchange tubes (1). Each set of heat exchange tubes (1) is fixed on different adjustment brackets. Each adjustment bracket is fixed together and each adjustment bracket is provided with two sets of scrapers (6).

10. A water spraying mechanism for humidification in a fresh air system according to claim 1, characterized in that, The water tank (24) is equipped with a water pipe (241), which is connected to the outlet of the water pump (23). The bottom of the water pipe (241) is equipped with multiple water outlets, which are located directly above the heat exchange tube (1).

Images