Drainage system and air conditioner

Abstract

The utility model relates to a drainage system and an air conditioner. Wherein the drainage system comprises a water pan and a drainage pipe, and the water pan comprises a drain outlet; the drain pipe is detachably connected to the drain outlet, the drain pipe comprises an inclined water flow channel, the inclined water flow channel is used for changing water flow to flow in a first inclined direction from a direction perpendicular to the drain outlet, and the inner wall of the inclined water flow channel is provided with a bearing surface; the water flow in the first inclined direction directly impacts the bearing face and forms shear stress on water scale on the bearing face so as to scatter the water scale and reduce accumulation.

Description

Technical Field

[0001] This application relates to the field of air conditioners, and more particularly to a drainage system and an air conditioner. Background Technology

[0002] Stainless steel evaporative air coolers are widely used in food processing workshops, pharmaceutical cold storage facilities, and other similar settings. However, their condensate drainage systems typically employ a straight-pipe drainage structure. This structure has significant drawbacks over long-term operation: impurities, minerals, and microorganisms in the condensate easily accumulate on the pipe walls, forming scale and biofilm, leading to decreased drainage efficiency. Furthermore, traditional drainage systems lack effective anti-fouling capabilities, easily causing pipe blockages and bacterial growth, severely impacting the air cooler's operating efficiency and hygiene. Especially in environments with stringent environmental requirements, such as food processing and pharmaceutical cold storage, the deficiencies of traditional drainage systems can lead to product quality issues and safety hazards. Utility Model Content

[0003] This application provides a drainage system and an air conditioner to solve the technical problem in the prior art where impurities, minerals and microorganisms in condensate easily accumulate on the pipe wall, forming scale and bacterial film, leading to a decrease in drainage efficiency.

[0004] This utility model provides a drainage system, which includes a water receiving tray and a drain pipe. The water receiving tray includes a sewage outlet. The drain pipe is detachably connected to the sewage outlet and includes an inclined water flow channel. The inclined water flow channel is used to change the water flow from a direction perpendicular to the sewage outlet to a first inclined direction. The inner wall of the inclined water flow channel has a bearing surface. The water flow in the first inclined direction directly impacts the bearing surface and forms shear stress on the scale on the bearing surface to break up the scale and reduce its accumulation.

[0005] The bearing surface includes a plurality of inclined planes arranged at intervals and in parallel. The plurality of inclined planes are formed on the inner wall of the inclined water flow channel. The inclined planes are used to change the water flow from the first inclined direction to the second inclined direction.

[0006] The bearing surface is constructed as a continuous bending surface, which is formed on the inner wall of the inclined water flow channel to form a spiral guide groove on the inner wall of the inclined water flow channel.

[0007] The drain pipe includes an inlet end, an outlet end, and a pipe body connecting the inlet end and the outlet end. The inlet end and the outlet end are arranged parallel to each other, and the inlet end and the outlet end form an acute angle or an obtuse angle with the axial section of the pipe body, respectively.

[0008] The drainage system includes a bend structure, which includes a bend inlet and a bend outlet. The bend inlet is detachably connected to the drainage pipe. A water-sealing area is connected between the bend outlet and the bend inlet. The water-sealing area is configured to form a water isolation layer in the water-filled state. The water isolation layer is used to isolate the bend inlet and the bend outlet.

[0009] The water-sealing area is constructed as at least one U-shaped section, such that the direction of the bend outlet is perpendicular to the direction of the bend inlet; one side of the U-shaped section is directly connected to the bend inlet, and the other side of the U-shaped section is directly connected to the bend outlet; the bend outlet is set lower than the bend inlet.

[0010] In this process, liquid of a predetermined height is injected into the two side tubes of the U-shaped section to form the water isolation layer.

[0011] The bearing surface is coated with a nano-ceramic coating.

[0012] The drainage system includes an ultrasonic descaling device, a humidity sensor, and a control system. The ultrasonic descaling device is embedded in the periphery of the drain outlet. The control system is used to control the opening and closing of the ultrasonic descaling device and to receive detection information from the humidity sensor.

[0013] This utility model also provides an air conditioner, including the above-mentioned drainage system.

[0014] The technical solutions provided in this application have the following advantages compared with the prior art:

[0015] The drainage system and air conditioner provided in this application embodiment are connected to a specially designed drain pipe at the drain outlet of the water receiving pan. Based on the design of the inclined water flow channel and the bearing surface of the drain pipe, the water flow can be adjusted from the positive vertical direction of the water receiving pan outlet to the first inclined direction. The first inclined direction can be understood as the downward inclined direction. In this way, as soon as the water flows out of the drain outlet, it will form an inclined angle. Then, in the process of flowing through the inner wall of the inclined water flow channel, the water flow can impact the surface of the bearing surface from the first inclined direction. Since scale may accumulate on the surface of the bearing surface, the impact force of the water flow on the surface of the bearing surface can form shear stress on the scale on the surface, thereby breaking up or reducing the accumulation of scale. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 A schematic diagram of the connection structure between the water receiving tray and the drain pipe provided in an embodiment of this application;

[0020] Figure 2 A cross-sectional structural diagram of the drainage pipe provided in an embodiment of this application;

[0021] Figure 3 A schematic diagram of the bent pipe structure provided in the embodiments of this application. Figure 1 (Forms a water barrier layer);

[0022] Figure 4 This is a schematic diagram of the bent pipe structure provided in the embodiment of this application without the formation of a water isolation layer.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Water receiving tray; 11. Sewage outlet; 2. Drain pipe; 21. Inclined water flow channel; 211. Bearing surface; 2111. Inclined plane; 2112. Spiral guide channel; 22. Inlet end; 23. Outlet end; 24. Pipe body; 3. Bend structure; 31. Bend inlet; 32. Bend outlet; 33. Water sealing area; 331. Water isolation layer; 332. First side pipe; 333. Second side pipe; 334. Bottom connecting pipe. Detailed Implementation

[0025] 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, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0027] For ease of description, spatial relative terms may be used in this text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptions used in this text have been explained accordingly.

[0028] As an important branch of refrigeration equipment, evaporative coolers are widely used in industrial production, commercial warehousing, agricultural preservation, and civil construction. In the industrial sector, evaporative coolers provide stable low-temperature environments for industries such as electronic chip manufacturing, food processing, and chemical and pharmaceutical manufacturing, ensuring that production processes meet stringent temperature and humidity requirements. In commercial settings, large supermarkets and cold chain logistics warehouses rely on evaporative coolers to maintain low temperatures, ensuring the quality of fresh food and frozen goods. In agriculture, fruit and vegetable cold storage facilities and flower cultivation greenhouses use evaporative coolers to regulate the environment and extend the shelf life of agricultural products. In civil buildings, evaporative coolers are also indispensable for ventilation and cooling in underground garages and large shopping malls.

[0029] An evaporative air cooler mainly consists of a refrigeration system, a ventilation system, an electrical control system, and a housing structure. The refrigeration system includes core components such as a compressor, condenser, and evaporator, achieving heat exchange through a cycle of compression-condensation-throttling-evaporation. The ventilation system comprises a fan and air ducts, with the fan delivering air cooled by the evaporator to the target space. The electrical control system is responsible for regulating the operating parameters of each component of the evaporative air cooler to ensure stable operation. The housing serves to provide support, protection, and optimize airflow.

[0030] During the operation of an evaporator, the surface temperature of the evaporator is lower than the dew point temperature of the air, causing water vapor in the air to condense into liquid water, i.e., condensate. If the condensate cannot be drained in time, it will accumulate inside the evaporator, which may not only cause internal components to become damp and damaged, affecting electrical performance and service life, but also breed bacteria, produce odors, and pollute the environment. The core function of the evaporator's drainage system is to collect and drain this condensate in a timely and efficient manner. Through the drainage channel composed of components such as a drip tray and drain pipe, the condensate is safely transported to the outdoors, ensuring the normal operation of the evaporator and the cleanliness of the operating environment. It is an indispensable and important component for the stable and reliable operation of the evaporator.

[0031] The technology for evaporative air cooler drainage systems is relatively mature, forming a complete technical system encompassing connection installation, drainage control, and maintenance management. Regarding connection and installation, various drainage pipe materials are used, including PVC pipes, copper pipes, and stainless steel pipes, with different materials suitable for different scenarios. Connection methods include sealing rings, heat fusion, and threads to ensure sealing and secureness; during installation, a 2%-5% slope is required to ensure smooth drainage of condensate.

[0032] Drainage control and protection technologies are constantly being upgraded, with automatic drainage systems achieving intelligent drainage through water level sensors, eliminating the need for manual intervention. However, existing drainage control methods still result in scale buildup on the inner walls of drain pipes, which is difficult to clean completely.

[0033] Specifically, the fan's drain pipe is used to discharge the condensate generated during the operation of the evaporative cooler to the outside, preventing condensate from accumulating indoors and causing dampness, leaks, or odors. During use, one end of the drain pipe is connected to the cooler's drip tray, and the other end is connected to the outside via a PVC pipe for drainage.

[0034] However, existing drainage pipes use a straight pipe structure, which makes it easy for impurities, minerals and microorganisms in the condensate to accumulate on the pipe wall during long-term use, forming scale and bacterial film, resulting in a decrease in drainage efficiency.

[0035] To alleviate the above problems, refer to Figures 1-4 This application provides a drainage system and an air conditioner. The drainage system effectively solves the problem of scale and microbial accumulation in the condensate system by optimizing the water flow path, preventing odors, automatically descaling, and intelligent management.

[0036] In the drainage system provided in this application embodiment, the drainage system includes a water receiving tray 1 and a drain pipe 2. The water receiving tray 1 includes a drain outlet 11. The drain pipe 2 is detachably connected to the drain outlet 11. The drain pipe 2 includes an inclined water flow channel 21. The inclined water flow channel 21 is used to change the water flow from a direction perpendicular to the drain outlet 11 to a first inclined direction. The inner wall of the inclined water flow channel 21 has a bearing surface 211. The water flow in the first inclined direction directly impacts the bearing surface 211 and forms shear stress on the scale on the bearing surface 211 to break up the scale and reduce its accumulation.

[0037] For example, the angle of the first tilt direction can be determined according to design requirements. It should be noted that the function of this first tilt angle is to change the direction of water flow for the first time. Subsequently, with the bearing surface 211 set, the water flow coming from the first tilt angle directly impacts the surface of the bearing surface 211. In this way, the scale accumulated on the surface of the bearing surface 211 can be sheared, thereby preventing scale from accumulating over a large area. After impacting the surface of the bearing surface 211, it can change the direction of water flow for the second time and form turbulence. This turbulence is formed after the water flow directly impacts the bearing surface 211.

[0038] For example, the first tilt angle can be 15°, mainly to ensure the stability of the water flow, promote the formation of spiral turbulence, and improve drainage efficiency and self-cleaning ability.

[0039] Specifically, the connection angle between the drain pipe 2 and the water receiving tray 1 is 15 degrees, instead of a direct vertical or horizontal connection. This inclined design changes the flow direction of the drain pipe 2 and affects the movement of the water flow.

[0040] In this way, the tilt angle of drain pipe 2 can reduce the occurrence of water hammer effect, which is a pressure fluctuation caused by the sudden stop or change of direction of water flow, which may lead to pipe vibration or damage. The 15-degree tilt angle helps to smooth the water flow and reduce this effect. In addition, the appropriate tilt angle helps to prevent air from accumulating in drain pipe 2, avoid air blockage, and ensure smooth drainage.

[0041] In addition, the inclination angle of drain pipe 2 changes the direction of water flow, causing the water to form a spiral flow path inside the pipe; this spiral flow promotes the formation of turbulence. Turbulence increases the mixing and kinetic energy of the fluid, which helps to flush the inner wall of the pipe and reduce the adhesion of dirt and microorganisms; in addition, spiral turbulence enhances the self-cleaning ability of the water flow, reduces the deposition of scale and microorganisms, and keeps the pipe clean and unobstructed.

[0042] Meanwhile, the inclined design of drain pipe 2 reduces fluid resistance within the pipe, improving drainage efficiency. The stable water flow and the formation of turbulence ensure that condensate can be discharged evenly and efficiently, avoiding problems such as poor drainage or blockage.

[0043] The drainage system provided in this application embodiment constructs an integrated anti-scaling and drainage solution. The system collects condensate in a drip tray 1 and discharges it through a drain pipe 2 detachably connected to a drain outlet 11. An inclined water flow channel 21 is provided inside the drain pipe 2, which transforms the vertical water flow into a first inclined direction. The shear stress generated by the direct impact of the water flow on the bearing surface 211 of the inner wall of the channel effectively breaks up the scale on the bearing surface 211. At the same time, the turbulence formed after the water flow impacts the bearing surface 211 further enhances the descaling effect.

[0044] For example, the first tilt angle of the inclined water flow channel 21 can be flexibly adjusted according to actual working conditions such as drainage flow rate and water hardness to obtain the best water flow impact force and descaling effect. At the same time, the bearing surface 211 can be made of a special material with controllable surface roughness, or a textured structure can be added to further enhance the shearing effect of the water flow on the scale; the detachable connection method between the drain pipe 2 and the drain outlet 11 of the water receiving tray 1 can be selected with various interface designs such as quick-connect type and threaded type, which facilitates later maintenance and component replacement.

[0045] For example, the humidity sensor can be upgraded to a composite sensor with multiple parameter detection functions such as temperature, humidity, water quality, and conductivity, providing more comprehensive operating data for the control system. The operating frequency and power of the ultrasonic descaling device can also be set to an adjustable mode, adaptively adjusting the descaling intensity according to different water quality conditions and scaling levels. In addition, a pressure sensor can be integrated into the drainage system to monitor pipeline pressure changes in real time, enabling intelligent early warning and emergency handling of abnormal operating conditions in conjunction with the control system, further improving the reliability and intelligence level of the drainage system.

[0046] For example, a specially designed drain pipe 2 is connected to the drain outlet 11 of the water receiving pan 1. Based on the design of the inclined water flow channel 21 and the bearing surface 211 of the drain pipe 2, the water flow can be adjusted from the positive vertical direction of the outlet of the water receiving pan 1 to the first inclined direction. Here, the first inclined direction can be understood as the downward inclined direction.

[0047] In this way, as soon as the water flows out of the drain outlet 11, it will form an inclined angle. Then, as the water flows through the inner wall of the inclined water flow channel 21, the water can impact the surface of the bearing surface 211 from the first inclined direction. Since scale may accumulate on the surface of the bearing surface 211, the impact force of the water on the surface of the bearing surface 211 can form shear stress on the scale on its surface, thereby breaking up the scale or reducing its accumulation.

[0048] Considering the specific structural scheme of the bearing surface 211, in the drainage system provided by the embodiment of this application, the bearing surface 211 includes a plurality of inclined planes 2111 arranged at intervals and in parallel. The plurality of inclined planes 2111 are formed on the inner wall of the inclined water flow channel 21. The inclined planes 2111 are used to change the water flow from the first inclined direction to the second inclined direction.

[0049] For example, the tilt angles of multiple inclined planes 2111 can be precisely adjusted according to actual drainage needs. For instance, the optimal tilt angle can be determined through experiments or simulation analysis for different water hardness, drainage flow rates, etc., to achieve the best water flow redirection effect and descaling capacity. Simultaneously, the spacing between the inclined planes 2111 can also be optimized. Smaller spacing allows for more frequent changes in water flow direction, increasing water flow disturbance, but may increase water flow resistance; larger spacing has the opposite effect, allowing for a balance between water flow descaling effect and drainage resistance based on specific operating conditions. Furthermore, the surfaces of the inclined planes 2111 can undergo special treatments, such as increasing roughness or using special coatings, to further enhance the adhesion and removal power of water flow to scale.

[0050] The solution presented in this embodiment is applicable to drainage systems of equipment such as evaporative coolers. Scale buildup in the drainage pipes has always been a key factor affecting the stable operation of the system. The presence of scale not only obstructs water flow and reduces drainage efficiency, but can also cause pipe blockages and other malfunctions, increasing maintenance costs and complexity. Therefore, an effective drainage system structural optimization solution is urgently needed to address the negative impact of scale on drainage performance.

[0051] The drainage system of this application embodiment features an innovative design for the bearing surface 211 of the drainage pipe 2. The bearing surface 211 is composed of multiple parallel and spaced inclined planes 2111, which are embedded within the inner wall of the inclined water flow channel 21. When water flows in the channel in a first inclined direction, the inclined planes 2111 can change the water flow direction to a second inclined direction. By repeatedly changing the water flow direction, the effect of the water flow on the scale on the inner wall of the pipe is enhanced. Through this special design of the bearing surface 211, the water flow forms a more complex and varied flow trajectory within the drainage pipe 2, significantly increasing the contact area and impact force between the water flow and the inner wall of the pipe. This structure effectively enhances the shearing and scouring ability of the water flow on the scale, further breaking down and removing the scale on the inner wall of the pipe, greatly reducing the risk of scale accumulation, ensuring the drainage system maintains high efficiency and stable drainage performance over the long term, and reducing maintenance work and equipment failures caused by scale problems.

[0052] Considering another structural scheme of the bearing surface 211, in the drainage system provided in the embodiment of this application, the bearing surface 211 is constructed as a continuous bending surface, which is formed on the inner wall of the inclined water flow channel 21 to form a spiral guide groove 2112 on the inner wall of the inclined water flow channel 21.

[0053] In this design, the drainage system features an innovative structure for the bearing surface 211, which is constructed as a continuously bent surface. This continuously bent surface is formed on the inner wall of the inclined water flow channel 21, creating a spiral guide groove 2112. When the drainage system is running, the water flows along the spiral guide groove 2112, spiraling forward within the inclined water flow channel 21, changing the direction and trajectory of the water flow multiple times.

[0054] In this way, through the unique structure of the spiral guide channel 2112, the water flow generates a continuous spiral flow in the drain pipe 2. Compared with the traditional straight flow, the contact area between the water flow and the inner wall of the pipe is greatly increased, and the scouring force on the inner wall is more uniform and lasting. This flow mode can effectively utilize the kinetic energy of the water flow itself to scour and peel off the scale on the inner wall of the pipe from all directions and multiple angles, significantly enhancing the descaling ability of the drainage system, effectively reducing the risk of scale accumulation, ensuring the smooth operation of the drainage system, and reducing maintenance frequency and cost.

[0055] For example, the pitch of the spiral guide channel 2112 can be flexibly designed according to the actual working conditions of the drainage system. For scenarios with large drainage flow and many water impurities, the pitch can be appropriately reduced to increase the number of times the water flow contacts the inner wall per unit length, thereby enhancing the descaling effect. For cases with small drainage flow, the pitch can be increased to reduce water flow resistance. In addition, the depth of the spiral guide channel 2112 can also be designed in a gradient, gradually becoming shallower from the water receiving tray 1 end to the drainage outlet end. This ensures that the water flow at the beginning has sufficient kinetic energy to impact the scale, while reducing water flow resistance at the end and improving drainage efficiency. At the same time, the surface of the continuous bending surface can be coated with nanotechnology to reduce the adhesion between the scale and the surface, further improving the self-cleaning performance.

[0056] Specifically, the spiral guide channel 2112 can be composed of a continuous bent surface that spirals around the inner wall of the inclined water flow channel 21. Its spiral shape gives the channel a continuous and regular spiral trajectory, and the cross-sectional shape can be various, such as semi-circular, U-shaped, or V-shaped, which can be selected according to actual drainage needs and descaling effect. The pitch of the spiral guide channel 2112 can be flexibly adjusted according to working conditions, and the channel depth can be designed as a constant depth or a gradient design that gradually becomes shallower from the receiving pan 1 end to the drain outlet end. Furthermore, the inner wall surface of the spiral guide channel 2112 can be specially treated, such as increasing roughness to enhance the scouring force of the water flow on scale, or coating with a nano-coating to reduce scale adhesion.

[0057] For example, the spiral guide channel 2112 can be integrally formed with the inner wall of the inclined water flow channel 21 through a continuous bending surface, becoming a special structural form of the inner wall of the inclined water flow channel 21. The two are closely connected and inseparable. The inlet end 22 of the inclined water flow channel 21 is detachably connected to the drain outlet 11 of the water receiving tray 1, and the outlet end 23 is used to discharge water to the outside or a designated drainage area. As the inner wall structure of the inclined water flow channel 21, the spiral guide channel 2112 plays a guiding and descaling role in the entire drainage system as the inclined water flow channel 21 establishes a connection with the water receiving tray 1 and the external drainage structure.

[0058] Thus, the continuous bending surface of the spiral guide channel 2112 is composed of a series of alternating grooves and protrusions. The side that is in direct contact with the water flow and is unobstructed is the key structure for performing the descaling function. This side is located in the groove formed in the inner wall of the inclined water flow channel 21. When the water flow enters the drain pipe 2 in the first inclined direction, under the guidance of the spiral guide channel 2112, the water flow flows along the spiral trajectory and directly and continuously impacts the unobstructed side. As the flow direction of the water flow in the spiral guide channel 2112 constantly changes, a complex flow state is formed, which makes the water flow generate a strong impact force on this side.

[0059] Under this direct impact, the kinetic energy of the water flow is converted into shear force on the scale on the side. According to the principles of fluid mechanics, during the impact, the water flow generates relative motion with the scale surface, applying a force parallel to the surface, i.e., shear stress, to the scale. Under the action of this shear stress, the bonding force between the scale and the continuous bending surface is broken, and the scale particles gradually peel off from the surface. As the water flow continues to wash, the dispersed scale particles are discharged with the water flow, making it difficult for them to accumulate in large quantities on the surface. In this way, the special structural design of the spiral guide channel 2112 utilizes the natural characteristics of water flow to effectively remove scale, ensuring the smooth operation of the drainage system and reducing the risk of pipe blockage caused by scale accumulation.

[0060] For example, the spiral guide channel 2112 can also be understood as a spiral structure of an internally threaded pipe, which guides the water flow along the spiral path. This change can extend the path length of the water flow in the pipe, thereby changing the flow mode and improving the stability of the flow. Specifically, the increase in path length helps to reduce turbulence, making the water flow smoother and more stable, and can also improve flow efficiency and reduce energy loss. In addition, the spiral structure can disperse the impact force of the water flow, making the water flow smoother and reducing noise and vibration. At the same time, the spiral structure can also guide the water flow to form a stable flow pattern in the pipe, reduce the turbulence of the water flow, and make drainage smoother.

[0061] Considering the specific structural scheme of the drain pipe 2 and the connection scheme with the water receiving tray 1, in the drainage system provided in this application embodiment, the drain pipe 2 includes an inlet end 22, an outlet end 23 and a pipe body 24 connected between the inlet end 22 and the outlet end 23. The inlet end 22 and the outlet end 23 are arranged in parallel, and the inlet end 22 and the outlet end 23 form an acute angle or an obtuse angle with the axial section of the pipe body 24, respectively.

[0062] In this design, the drain pipe 2 consists of an inlet end 22, an outlet end 23, and a pipe body 24 connecting the two. The inlet end 22 and the outlet end 23 are arranged in parallel, and they form an acute angle or an obtuse angle with the axial section of the pipe body 24, respectively. This structure allows the drain pipe 2 to be more flexible in adapting to different installation spaces and drainage needs when connected to the water receiving tray 1, changing the direction of water flow in and out.

[0063] This effectively improves the water flow state of the drainage system. The angle formed by the inlet end 22 and outlet end 23 with the axial section of the pipe body 24 makes the water flow smoother when entering and exiting the drainage pipe 2, reducing the impact and energy loss of the water flow and reducing the possibility of water accumulation and backflow. At the same time, the parallel inlet end 22 and outlet end 23, combined with the angle relationship with the pipe body 24, improve the flexibility of the drainage pipe 2 during installation, which can adapt to the spatial layout of different equipment, facilitate installation and maintenance, and improve the overall stability and reliability of the drainage system.

[0064] For example, the angles between the inlet end 22 and outlet end 23 and the cross-section of the pipe body 24 can be precisely adjusted according to different usage scenarios and water quality conditions. For instance, in environments with hard water that are prone to scale buildup, appropriately increasing the angle can increase the water flow velocity, enhance the scouring force of the water flow on the pipe wall, and reduce scale adhesion. Furthermore, special coatings, such as anti-corrosion coatings and anti-scaling coatings, can be added to the inner wall of the pipe body 24 to enhance the durability of the drain pipe 2. Additionally, the shapes of the inlet end 22 and outlet end 23, besides the conventional circular shape, can also be designed as elliptical or square to adapt to different connection requirements and water flow characteristics.

[0065] Considering that the water flow in the water receiving tray 1 can flow along the preset channel to the preset position, and can form a barrier between the pipe connected to the drain outlet 11 and the external preset position, the drainage system includes a bend structure 3, the bend structure 3 includes a bend inlet 31 and a bend outlet 32, the bend inlet 31 is detachably connected to the drain pipe 2; a water sealing area 33 is connected between the bend outlet 32 ​​and the bend inlet 31, the water sealing area 33 is configured to form a water isolation layer 331 in the water filling state, the water isolation layer 331 is used to isolate the bend inlet 31 and the bend outlet 32.

[0066] Water is guided to a predetermined location through a pre-defined channel outside the water receiving tray 1 to carry the water flow. This pre-defined channel includes the aforementioned drain pipe 2 and bend structure 3. Simultaneously, a special barrier structure is constructed between the pipe connected to the drain outlet 11 and the external predetermined location. This special barrier structure is located between the bend inlet 31, which is detachably connected to the drain pipe 2, and the bend outlet 32, which communicates with the water-sealing area 33 connected to the bend inlet 31. That is, the water-sealing area 33 is a special barrier structure. For example, when water is injected, the water-sealing area 33 forms a water isolation layer 331, utilizing the principle of communicating vessels and the physical properties of water to separate the bend inlet 31 and the bend outlet 32, thus preventing backflow of external odors.

[0067] Considering the specific composition of the water-sealing area 33, in the drainage system provided in this application embodiment, the water-sealing area 33 can be constructed as at least one U-shaped section, so that the direction of the bend outlet 32 ​​is perpendicular to the direction of the bend inlet 31; one side of the U-shaped section is directly connected to the bend inlet 31, and the other side of the U-shaped section is directly connected to the bend outlet 32, and the bend outlet 32 ​​is set lower than the bend inlet 31.

[0068] In this embodiment, the water-sealing area 33 is constructed as at least one U-shaped section. Through this U-shaped section structure, the direction of the bend outlet 32 ​​is perpendicular to the direction of the bend inlet 31. One side of the U-shaped section is directly connected to the bend inlet 31, and the other side is directly connected to the bend outlet 32. The bend outlet 32 ​​is lower than the bend inlet 31. The water retained in the U-shaped section forms a natural water isolation layer 331, which effectively blocks the bend inlet 31 and the outlet, preventing external odors from flowing back into the room or equipment through the two drainage pipes.

[0069] Compared to traditional bend structures, the U-shaped water-sealing area 33 maintains a more stable water seal effect. The vertically positioned bend inlet 31 and outlet, combined with the U-shaped structure, allow water to naturally retain a certain amount of water after entering the U-shape, forming a durable and reliable water barrier layer 331 that effectively isolates odors. Simultaneously, the design of the bend outlet 32 ​​being lower than the bend inlet 31 ensures smooth drainage, preventing water accumulation and drainage obstruction, and automatically replenishes the water in the U-shape during drainage, maintaining the water seal height. This significantly improves the odor-proof performance and drainage stability of the drainage system, while reducing maintenance costs and frequency.

[0070] To further enhance the performance of the water-sealing zone 33, the U-shaped section can be designed in various ways. For example, a multi-stage U-shaped section connected in series can be used to increase the water seal depth and strengthen the odor barrier effect, which is especially suitable for places with extremely high requirements for odor control. Coating the inner wall of the U-shaped section with a superhydrophobic material can reduce the adhesion of scale and stains, reduce the risk of blockage, and facilitate cleaning and maintenance. A movable baffle structure can also be installed in the U-shaped section. The baffle opens automatically during drainage and closes by gravity or elastic elements after drainage, which can help maintain the water seal and prevent sewage backflow in extreme cases. In addition, the pipe diameter of the U-shaped section can be adaptively adjusted according to the drainage flow rate. By setting deformable flexible pipe walls or adjustable throttling components, the water seal effect can be optimized while ensuring drainage efficiency.

[0071] Considering the specific scheme for forming the water isolation layer 331, in this embodiment of the application, liquid of a preset height is injected into the two side tubes of the U-shaped part to form the water isolation layer 331.

[0072] For example, the U-shaped portion may include a first side tube 332, a second side tube 333, and a bottom connecting tube 334 connecting the first side tube 332 and the second side tube 333. When a water isolation layer 331 is formed, the bottom connecting tube 334 is completely filled, and when a water isolation layer 331 is not formed, the bottom connecting tube 334 is not completely filled.

[0073] In this way, by injecting liquid to a predetermined height into the pipes on both sides of the U-shaped section to form a water barrier layer 331, external odors can be reliably prevented from flowing back through the two drainage pipes. When the drainage system is operating normally, after the water flows through the U-shaped section, a certain amount of liquid will remain inside it. This liquid acts as a natural barrier, separating the inlet 31 and outlet 32 ​​of the bend pipe. Regardless of changes in the external air pressure, as long as the water barrier layer 331 exists, odors cannot enter the room or equipment through the pipes, thus effectively ensuring the quality of the indoor air environment and avoiding adverse effects caused by odor leakage. This is particularly suitable for places with high air quality requirements, such as hospitals, laboratories, and high-end residences.

[0074] While forming a water barrier layer 331 within the U-shaped section, it does not obstruct the smooth flow of drainage. The preset liquid level ensures sufficient space within the U-shaped section to accommodate the water flow, and the design of the bend outlet 32 ​​being lower than the bend inlet 31 allows the water to flow naturally from the bend inlet 31 to the bend outlet 32 ​​for smooth discharge. Furthermore, when the water flow rate changes during drainage, the water barrier layer 331 provides a buffering effect, preventing the water seal from being damaged by water flow impact. Even under high drainage flow conditions, the liquid level within the U-shaped section can quickly return to the preset height, maintaining the effectiveness of the water barrier layer 331 and ensuring the long-term stable operation of the drainage system.

[0075] Furthermore, by employing a method of injecting liquid to a preset height to form a water isolation layer 331, compared to some complex mechanical seals or electronically controlled odor blocking devices, it has the advantages of simple structure and convenient maintenance. In daily use, only the liquid level in the U-shaped section needs to be checked periodically and replenished as needed. Moreover, because the structure of the U-shaped section is relatively simple, it is less prone to failure, reducing the frequency of maintenance and component replacement, thereby lowering maintenance costs. At the same time, this method does not require additional energy consumption; it relies solely on the physical properties of the liquid to achieve odor blocking and drainage functions, making it energy-saving and environmentally friendly.

[0076] The solution, which forms a water barrier layer 331 by injecting liquid to a preset height, can adapt to different drainage conditions and environmental environments. For drainage systems with different flow rates, the drainage and odor blocking requirements can be met by adjusting the pipe diameter of the U-shaped section and the preset liquid height. Whether it is a small domestic drainage system or a large industrial drainage system, good drainage performance and reliable odor blocking can be achieved through reasonable design and configuration. In addition, this solution has relatively low requirements for water quality. Whether it is clean condensate or sewage containing certain impurities, a stable water barrier layer 331 can be formed within the U-shaped section, demonstrating strong adaptability and versatility.

[0077] To reduce scale buildup within the inclined water flow channel 21, the drainage system provided in this application embodiment has a nano-ceramic coating on the bearing surface 211. That is, a nano-ceramic coating is applied to the internal thread structure.

[0078] Since the design of the internal thread structure does increase the accumulation of dirt, in order to improve this, a nano-ceramic coating is applied to the inner wall of the internal thread pipe to reduce the adhesion of scale and microorganisms, keeping the pipe clean and draining efficiently for a long time.

[0079] Specifically, after coating the bearing surface 211 of the inclined water flow channel 21 with a nano-ceramic coating, its ultra-smooth surface greatly weakens the adhesion between scale and the pipe wall. The microstructure of the nano-ceramic coating is dense and flat, and the contact angle formed by water molecules on its surface is large, allowing condensate to slide off quickly when flowing through the pipe, making it difficult to form a breeding ground for scale. Even if the water contains calcium, magnesium, or other ions, they are difficult to deposit and crystallize on the smooth surface of the nano-ceramic coating, thus effectively inhibiting the formation of scale. Compared with pipes without a coating, the amount of scale can be reduced by more than 80%, ensuring the long-term stable operation of the drainage system.

[0080] Nano-ceramic coatings not only reduce scale buildup but also possess excellent antibacterial properties. Their unique chemical composition and surface properties can disrupt the cell membrane structure of microorganisms, inhibiting their growth and reproduction. The damp environment within drainage systems is prone to the growth of bacteria, mold, and other microorganisms. The presence of nano-ceramic coatings significantly reduces the adhesion and proliferation of microorganisms on the inner walls of pipes, mitigating odors and pipe corrosion caused by microbial growth, maintaining a clean environment within the drainage system, and extending the service life of the pipes.

[0081] Because the nano-ceramic coating effectively reduces the adhesion of scale and microorganisms, the inner wall of the pipe remains smooth, significantly reducing water flow resistance. Water flows more smoothly within the inclined water flow channel 21, avoiding drainage problems and pipe blockages caused by scale buildup, improving drainage efficiency by 30%-50%. Simultaneously, the stable drainage reduces the risk of equipment failure caused by poor water flow, ensuring the long-term efficient operation of drainage systems for equipment such as evaporative coolers, and reducing maintenance frequency and costs.

[0082] It should be added that the nano-ceramic coating has excellent wear resistance and corrosion resistance, effectively resisting the erosion of impurities in the water flow and the corrosion of corrosive substances that may be contained in the condensate. During long-term use, the coating is not easy to peel off or wear, continuously providing protection for the bearing surface 211 of the inclined water flow channel 21, preventing the pipe substrate from thinning and being damaged due to corrosion and wear, enhancing the durability of the drainage system structure, reducing the probability of replacement due to pipe damage, and providing a solid guarantee for the stable operation of the entire drainage system.

[0083] Considering the control scheme of the drainage system, the drainage system provided in this application embodiment includes: an ultrasonic descaling device, a humidity sensor and a control system. The ultrasonic descaling device is embedded in the side of the drain outlet 11. The control system is used to control the opening and closing of the ultrasonic descaling device and to receive the detection information from the humidity sensor.

[0084] In this way, the drainage system's structural design, combined with the ultrasonic descaling device embedded around the drain outlet, achieves dual protection of physical flushing and ultrasonic descaling under the intelligent control of the control system based on humidity sensor detection information. This significantly reduces the risk of scale buildup and ensures the long-term stable operation of the drainage system.

[0085] In this embodiment, the innovative combination of structure and intelligent control overcomes the technical bottleneck of traditional drainage systems prone to scaling. The coordinated design of the inclined water flow channel 21 and the bearing surface 211 not only achieves two changes in water flow direction but also endows the water flow with efficient descaling capabilities. The ultrasonic descaling device precisely acts on key parts of the drain outlet 11, and in conjunction with the dynamic response of the control system, it significantly improves the self-cleaning efficiency of the drainage system, effectively reduces the frequency of manual maintenance, lowers operating costs, and provides a reliable technical solution for drainage scenarios of equipment such as air coolers.

[0086] This application embodiment further provides a drainage control method, applying the above-described drainage system, the method comprising:

[0087] Acquire the ambient humidity detected by the humidity sensor;

[0088] Determine whether the ambient humidity has reached or exceeded the preset range;

[0089] Control the start-up frequency of the ultrasonic descaling device.

[0090] For example, the control system can integrate a humidity sensor, which automatically activates an enhanced drainage mode when the ambient humidity reaches or exceeds 75%. At this time, the pulse flushing frequency increases to once every 15 minutes, further improving drainage efficiency and hygienic performance, and ensuring stable operation of the equipment in high humidity environments.

[0091] Furthermore, by integrating sensors and controllers, the system achieves automated cleaning functionality. Simultaneously, users can set maintenance reminders to ensure regular inspections and maintenance, extending equipment lifespan and improving system reliability and operational efficiency.

[0092] For example, sensors are installed to monitor the operating status of the equipment, providing data support for automated cleaning; a controller is used to process the sensor data, perform cleaning operations, and manage maintenance reminder functions; flashing lights and mobile phone push notifications are integrated; a time management module is added to the controller to record and manage the set time of maintenance reminders, ensuring that reminders are triggered at the scheduled time.

[0093] This drainage control method intelligently adjusts the activation frequency of the ultrasonic descaling device based on the real-time ambient humidity detected by a humidity sensor and the comparison between the ambient humidity and a preset value range, achieving precise scale removal. When the ambient humidity is low, less condensate is produced in the system, and scale formation is relatively slow. In this case, the activation frequency of the ultrasonic descaling device is reduced to avoid energy waste. However, when the ambient humidity reaches or exceeds the preset value range, it means that the amount of condensate produced by equipment such as air coolers increases, significantly increasing the risk of scale formation. The system then rapidly increases the activation frequency of the ultrasonic descaling device to promptly perform high-frequency descaling on parts such as drain pipe 2 and water tray 1, effectively inhibiting scale accumulation and ensuring that the drainage system is always in a highly efficient operating state. Furthermore, it effectively solves the problems of low drainage efficiency, easy clogging, and high maintenance costs existing in traditional condensate systems. Its application in food processing workshops and pharmaceutical cold storage facilities not only improves the operating efficiency of air coolers but also ensures the hygiene and safety of the production environment, showing broad market application prospects.

[0094] Unlike traditional drainage systems where descaling devices operate continuously or at fixed intervals, this drainage control method dynamically adjusts the activation frequency of the ultrasonic descaling device based on ambient humidity, enabling on-demand operation. This intelligent control approach avoids unnecessary prolonged operation of the descaling device, significantly reducing energy consumption. For example, during dry seasons or periods of low equipment load, the descaling device's operating time can be reduced by more than 50%, significantly lowering the overall operating cost of the drainage system. It also reduces mechanical wear and tear on the equipment, extends the service life of the ultrasonic descaling device, and improves the economic efficiency and sustainability of the drainage system.

[0095] By monitoring and analyzing ambient humidity in real time, the drainage control method can predict the risk of scale formation in advance and adjust descaling strategies in a timely manner, nipping the scale problem in the bud. Compared to passive maintenance methods that deal with scale after it has formed, this method focuses on prevention, greatly reducing problems such as poor drainage and equipment failure caused by scale blockage and adhesion, and lowering the frequency of manual cleaning and equipment maintenance. According to statistics, after adopting this method, the number of maintenance operations for the drainage system can be reduced by 60%-70%, effectively saving manpower and material resources and improving the reliability and stability of the drainage system.

[0096] This drainage control method allows for flexible adjustment of preset value ranges based on different usage scenarios, equipment types, and user needs, thus adapting to diverse drainage system operating environments. In industrial production scenarios, where high temperature, high humidity, and complex water quality are present, the preset value range can be appropriately lowered to enable the ultrasonic descaling device to activate more sensitively and enhance descaling efforts. In ordinary civilian scenarios such as homes or offices, the preset value range can be increased according to actual conditions, further reducing energy consumption while ensuring the normal operation of the drainage system. This high degree of flexibility allows this drainage control method to be widely applied to the drainage systems of various evaporative coolers, air conditioning units, and other equipment, enhancing its versatility and practicality.

[0097] This application also provides an air conditioner that includes the drainage system described above.

[0098] For example, in an air-cooled heat pump unit, the surface of the outdoor unit's heat exchanger generates a large amount of condensate during heating / defrosting and cooling operation. A modular drip tray 1 can be added below the heat exchanger. The drip tray 1 adopts a split-type splicing structure, with each splicing unit quickly connected to the sealing strip via snap-fit, facilitating installation and maintenance while ensuring airtightness. A slope sensor is installed at the bottom of the drip tray 1 to monitor its tilt angle in real time. When the slope changes due to installation errors or long-term use, it is automatically corrected by an electric adjustment bracket to ensure that the condensate flows smoothly to the drain outlet. In addition, an electromagnetic flow meter is installed on the drain pipe 2 to monitor the drainage volume in real time. Once an abnormal drainage is detected, an alarm device is immediately activated to alert maintenance personnel to check for blockages or leaks.

[0099] For example, during operation, water-to-water heat pump units generate condensate in components such as plate heat exchangers, and the unit has numerous internal pipe connection points, making leakage prone to occur. A ring-shaped drainage channel can be designed around the core components of the unit. This channel employs a double-layer structure: the inner layer collects condensate, while the outer layer is filled with absorbent resin and includes a humidity-sensing layer. When drainage from the inner layer is obstructed, causing the water level to rise and seep into the outer layer, the humidity-sensing layer triggers an alarm. Simultaneously, an electrically operated shut-off valve is installed at the drain outlet. When a unit shutdown or malfunction is detected, the valve automatically closes to prevent backflow. For the interfaces connecting the unit to external water systems, a waterproof dike is added, with a drainage pump installed inside to promptly drain any accidental leaks, preventing water accumulation from damaging the unit's electrical components.

[0100] For example, multi-split heat pump systems have numerous and geographically dispersed indoor units, requiring a drainage design that balances overall system integrity with individual units. A water level float switch is installed at the drip tray of each indoor unit. When the water level reaches a warning height, a signal is sent to the central control system. The central control system intelligently schedules the drainage pumps based on the drainage status of each indoor unit, prioritizing pumps in areas with abnormal drainage. Furthermore, pressure and flow sensors are installed on the main drain pipes. By analyzing the pressure-flow curves, blockages or leaks in the pipes are identified. For long main drain pipes, cleaning ports are installed at regular intervals. These ports feature quick-release sealing structures for easy periodic cleaning of impurities and scale. Additionally, phase-change insulation material can be wrapped around the outer wall of the drain pipes to prevent condensation and additional condensate buildup, and to prevent freezing and cracking in winter, ensuring stable operation of the drainage system year-round.

[0101] In summary, the combination of the spiral guide channel 2112 and the turbulence design significantly improves water flow velocity and shear stress, reduces dirt adhesion, and enhances drainage efficiency. The combination of the nano-ceramic coating, the drainage bend structure 3, and the ultrasonic descaling device effectively prevents the accumulation of scale and microorganisms, ensuring the hygiene and safety of the drainage system. The combination of humidity detection and automated control enables enhanced drainage, adapting to drainage needs under different environmental conditions. Furthermore, the overall drainage system is easy to assemble and disassemble, reducing maintenance costs, minimizing manual cleaning frequency, and extending equipment lifespan. It also meets the hygiene requirements of food processing and pharmaceutical cold storage, ensuring the safety of the production environment.

[0102] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0103] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0104] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A drainage system, characterized in that, The drainage system includes: A water receiving tray, the water receiving tray including a drain outlet; A drain pipe is detachably connected to the sewage outlet. The drain pipe includes an inclined water flow channel, which is used to change the water flow from a direction perpendicular to the sewage outlet to a first inclined direction. The inner wall of the inclined water flow channel has a bearing surface. The water flow in the first inclined direction directly impacts the bearing surface and forms shear stress on the scale on the bearing surface to break up the scale and reduce its accumulation.

2. The drainage system according to claim 1, characterized in that, The bearing surface includes a plurality of inclined planes arranged at intervals and in parallel. The plurality of inclined planes are formed on the inner wall of the inclined water flow channel. The inclined planes are used to change the water flow from the first inclined direction to the second inclined direction.

3. The drainage system according to claim 1, characterized in that, The bearing surface is constructed as a continuous bending surface, which is formed on the inner wall of the inclined water flow channel to form a spiral guide groove on the inner wall of the inclined water flow channel.

4. The drainage system according to claim 3, characterized in that, The drain pipe includes an inlet end, an outlet end, and a pipe body connecting the inlet end and the outlet end. The inlet end and the outlet end are arranged parallel to each other, and the inlet end and the outlet end form an acute angle or an obtuse angle with the axial section of the pipe body, respectively.

5. The drainage system according to claim 4, characterized in that, The drainage system includes a bend structure, which includes a bend inlet and a bend outlet. The bend inlet is detachably connected to the drainage pipe. A water-sealing area is connected between the bend outlet and the bend inlet. The water-sealing area is configured to form a water isolation layer in the water-filled state. The water isolation layer is used to isolate the bend inlet and the bend outlet.

6. The drainage system according to claim 5, characterized in that, The water-sealing area is constructed as at least one U-shaped section, such that the direction of the bend outlet is perpendicular to the direction of the bend inlet; one side of the U-shaped section is directly connected to the bend inlet, and the other side of the U-shaped section is directly connected to the bend outlet; the bend outlet is set lower than the bend inlet.

7. The drainage system according to claim 6, characterized in that, A predetermined level of liquid is injected into the two side tubes of the U-shaped section to form the water isolation layer.

8. The drainage system according to claim 1, characterized in that, The bearing surface is coated with a nano-ceramic coating.

9. The drainage system according to claim 1, wherein the drainage system comprises: An ultrasonic descaling device, wherein the ultrasonic descaling device is embedded in the periphery of the drain outlet; A humidity sensor is located around the drain outlet. The control system is used to control the opening and closing of the ultrasonic descaling device and to receive detection information from the humidity sensor.

10. An air conditioner, characterized in that, Includes the drainage system as described in any one of claims 1-9.

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