Air conditioner indoor unit and air conditioning system

Abstract

This application discloses an indoor air conditioning unit and air conditioning system, belonging to the field of air conditioning equipment. The indoor air conditioning unit includes a casing, a fan, a heat exchanger, and a drainage mechanism. An air inlet is located at the bottom of the casing, and an air outlet is located on the side of the casing. The fan is installed inside the casing, with its air inlet side facing the air inlet and its air outlet side facing the air outlet. The heat exchanger is installed inside the casing. The drainage mechanism includes a water collection tray and a drain pipe. The water collection tray is fixed inside the casing and located near the bottom of the casing. A water collection trough is provided on the side of the water collection tray facing the heat exchanger, used to collect condensate dripping from the heat exchanger. The first end of the drain pipe extends into the water collection trough, and the second end extends outside the casing. In this way, the condensate generated by the heat exchanger is collected centrally in the water collection trough, and finally discharged through the drain pipe, effectively avoiding the problems of bacterial growth and damage to core components caused by random dripping and accumulation of condensate.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment, and in particular to an indoor air conditioning unit and an air conditioning system. Background Technology

[0002] During the operation of heat exchange equipment such as air conditioners, fresh air systems, and dehumidifiers, condensate will continuously be generated on the surface of the heat exchanger. If the condensate cannot be drained in a timely and smooth manner, it will cause water to accumulate inside the indoor unit and breed bacteria and mold. This will not only produce odors and affect indoor air quality, but may also damage core components such as the fan and circuit board inside the indoor unit, shortening the service life of the air conditioner. Summary of the Invention

[0003] This application provides an indoor air conditioning unit and air conditioning system that can drain water from the drip tray without the need for a fan. The technical solution is as follows: On the one hand, this application provides an indoor air conditioning unit, which includes a casing, a fan, a heat exchanger, and a drainage mechanism; The bottom of the housing is provided with an air inlet, and the side of the housing is provided with an air outlet; The fan is installed inside the housing, with the air inlet side of the fan facing the air inlet and the air outlet side of the fan facing the air outlet. The heat exchanger is installed inside the housing; The drainage mechanism includes a water receiving tray and a drain pipe; the water receiving tray is fixed inside the housing and is located near the bottom of the housing, and a water collection trough is provided on the side of the water receiving tray facing the heat exchanger; the first end of the drain pipe extends into the water collection trough, and the second end of the drain pipe extends outside the housing.

[0004] In this design, the casing has an air inlet at the bottom and an air outlet on the side. The fan draws indoor air into the casing through the air inlet, where it exchanges heat with the heat exchanger before being discharged through the air outlet located on the periphery of the casing. This facilitates 360° surround airflow, ensuring that the heat-exchanged air is evenly and quickly distributed to all areas of the room, avoiding discomfort caused by localized direct airflow and effectively improving cooling efficiency. Simultaneously, the aforementioned drainage mechanism, with a water collection tray near the bottom of the casing and a water collection trough for centralized collection of condensate from the heat exchanger, effectively prevents the accumulation of condensate, which could lead to bacterial growth, odors, or damage to core components such as the fan and circuit boards inside the indoor unit. In addition, the drain pipe can drain water through the siphon effect, eliminating the need for additional power components such as water pumps. It has a simple and compact structure, low energy consumption and low operating noise. It can automatically discharge the water in the collection tank to the outside of the shell by relying on the siphon effect, ensuring reliable and smooth drainage. It can achieve continuous drainage without complicated control, which greatly improves the stability and service life of the device.

[0005] In some possible implementations, the heat exchangers are distributed around the fan; at least a portion of the water receiving tray is located at the bottom of the heat exchangers and is distributed around the fan; the water collection tank is distributed around the fan.

[0006] This layout, in which heat exchangers are distributed around the fan, is compact and has a high space utilization rate. The heat exchangers are located on the air outlet side of the fan, which ensures that the airflow and the heat exchangers have full contact and heat exchange, avoiding insufficient heat exchange in some areas due to uneven airflow distribution. On the other hand, it can significantly improve the flow rate and uniformity of the airflow through the heat exchangers, so that the heat exchange area of ​​the heat exchangers can be used efficiently, thereby greatly improving the heat exchange efficiency.

[0007] At the same time, at least part of the water receiving tray is set at the bottom of the heat exchanger and is also distributed around the fan. This allows for comprehensive and thorough collection of condensate generated around the heat exchanger, effectively preventing condensate from dripping along the heat exchanger's circumference or remaining inside the shell, ensuring that condensate is fully collected and quickly discharged.

[0008] In some possible implementations, the bottom of the water collection tank is provided with a groove, and the first end of the drain pipe passes through the water collection tank and extends into the groove.

[0009] This allows condensate to collect in the groove under gravity, preventing water accumulation at the bottom of the collection tank and ensuring more thorough condensate collection. At the same time, it ensures that the first end of the drain pipe is always in the lowest water level area, making drainage smoother.

[0010] In some possible implementations, the water receiving tray includes: a water receiving tray body and a sleeve; the water receiving tray body is located at the bottom of the heat exchanger and is provided with the water collection groove; one end of the sleeve is connected to the water receiving tray body, and the other end extends to the top of the shell, and the sleeve is located at the groove position; The first end of the drain pipe passes through the sleeve and extends into the groove, while the second end of the drain pipe extends from the top of the housing to the outside of the housing.

[0011] In this way, the sleeve is distributed in the groove of the water collection tank and extends upward to the top of the shell, which can provide guidance and protection for the drain pipe, so that the drain pipe maintains a fixed direction during installation and operation, and prevents the drain pipe from shaking or shifting under the suction of the fan, ensuring that the drain pipe is always in a stable working state.

[0012] In addition, the drain pipe extends into the groove at the bottom of the water collection tank through the sleeve, which ensures that the water inlet is always at the lowest position where water accumulates. Condensate can fully accumulate in the groove and be discharged by the drain pipe in a timely manner, avoiding the formation of dead corners in the water collection tank and preventing odors, bacteria growth, or corrosion of parts due to long-term water accumulation.

[0013] In some possible implementations, the heat exchanger has a clearance groove on its periphery, and the sleeve is embedded in the clearance groove.

[0014] This creates a nested fit between the sleeve and the heat exchanger in the radial direction, effectively reducing the overall radial dimension of the indoor unit and making the structure more compact.

[0015] In some possible implementations, the top surface of the housing is the mounting surface, and the bottom of the water collection tank is inclined relative to the mounting surface; The distance between the bottom of the water collection trough on the side closer to the groove and the mounting surface is the first distance, and the distance between the bottom of the water collection trough on the side farther from the groove and the mounting surface is the second distance, wherein the first distance is greater than the second distance.

[0016] In this way, the bottom of the water collection tank is inclined relative to the mounting surface of the top surface of the shell, and the bottom of the tank is lower on the side closer to the groove and higher on the side farther away from the groove. This allows the condensate entering the water collection tank to be automatically guided and collected towards the groove under the action of gravity, avoiding the condensate from stagnating in the water collection tank or creating dead corners for water accumulation, ensuring more thorough collection of condensate and smoother drainage.

[0017] In some possible implementations, the drainage mechanism further includes a water storage box with an overflow port located between the first end of the drain pipe and the opening of the water collection tank along the axial direction of the fan. The second end of the drain pipe extends into the water storage box and is located between the bottom of the water storage box and the overflow port.

[0018] In this way, during the siphon drainage process, the drain pipe continuously discharges the condensate from the collection tank into the storage box, causing the water level in the storage box to gradually rise. Since the second end of the drain pipe is located between the bottom of the storage box and the overflow outlet, when the water level in the storage box rises to a height slightly higher than the second end of the drain pipe, the pipe opening is submerged, thus forming a stable water seal in the drainage path. This liquid seal effectively blocks the gas communication between the inside of the casing and the outside atmosphere, preventing outside air from being drawn into the casing through the drain pipe.

[0019] When the water level in the water tank rises to the overflow outlet, excess condensate can be discharged promptly through the overflow outlet. This ensures that the condensate in the water collection tank can be drained quickly.

[0020] In some possible implementations, the drainage mechanism further includes a check valve installed at the opening of the first end of the drain pipe, and the check valve is used to prevent liquid in the drain pipe from flowing back into the drip tray.

[0021] In this way, the check valve effectively prevents condensate in the drain pipe from flowing back into the water collection tank of the drip tray. When the device stops or the siphon is temporarily interrupted, the check valve can prevent the water in the pipe from flowing back, keeping the inside of the drain pipe full of liquid and preventing air from entering the drain pipe due to liquid backflow, which would disrupt the siphon condition.

[0022] In some possible implementations, the housing includes: a top plate and a bottom plate disposed opposite to each other, and an air outlet grille located between the top plate and the bottom plate; the two ends of the air outlet grille are respectively connected to the top plate and the bottom plate; The air inlets are distributed on the base plate, and the air outlets are provided on the air outlet grille.

[0023] In this way, the air outlet grille connects the top and bottom plates, ensuring the overall strength and rigidity of the casing, and also serves as a direct air outlet channel, eliminating the need for an air outlet structure, simplifying the overall assembly, and reducing costs. At the same time, the air outlet grille can also guide and reduce the airflow at the outlet, reducing airflow noise and improving user comfort.

[0024] In some possible implementations, the indoor unit of the air conditioner also includes a functional module connected to the side of the base plate away from the top plate and located on the outer periphery of the air inlet.

[0025] By placing the functional modules on the side of the base plate away from the top plate and around the air inlet, the unused space under the base plate can be fully utilized, allowing the functional modules to be integrated with the housing for a more compact structure. Furthermore, the functional modules surrounding the air inlet do not obstruct the air intake path and do not affect the airflow from the base plate into the housing, ensuring smooth air intake and sufficient air volume for the fan. At the same time, this arrangement facilitates the independent disassembly and maintenance of the functional modules.

[0026] In some possible implementations, the functional module includes at least one of a display screen, a lamp, a projector, and a speaker.

[0027] In some possible implementations, the housing is a cylindrical structure; And / or, the functional module is arranged in a circular structure around the outer periphery of the air inlet.

[0028] In this way, the cylindrical shell and the circular functional module work together to achieve 360° surround airflow, making the airflow more uniform and the indoor temperature regulation faster.

[0029] In some possible implementations, the fan includes a backward-curved impeller.

[0030] In this way, the airflow direction of the backward-curved impeller is straighter, allowing the airflow to flow into the gap between adjacent fins of the heat exchanger as much as possible after exiting the impeller. This reduces the angle between the airflow direction and the extension direction of the fins, thus reducing the impact of the airflow on the fins and minimizing fin vibration and abnormal noise. Furthermore, it reduces airflow circling and resistance losses on the fin surface, allowing more airflow to pass smoothly through the heat exchange area, improving heat exchange efficiency while further reducing overall machine operating noise.

[0031] Secondly, this application also provides an air conditioning system, which includes an outdoor unit, a connecting pipe, and an indoor unit, wherein the outdoor unit is connected to the indoor unit via the connecting pipe. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the indoor unit of the air conditioner provided in the embodiment of this application; Figure 2 This is an exploded view of the indoor unit of an air conditioner provided in an embodiment of this application; Figure 3This is a schematic diagram of the drainage mechanism provided in the embodiments of this application; Figure 4 This is a schematic diagram showing the relative positions of the drainage mechanism and the top plate provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the drain pipe provided in the embodiment of this application; Figure 6 This is a schematic cross-sectional view of the indoor unit of an air conditioner along the axial direction provided in the embodiment of this application; Figure 7 This is a radial cross-sectional schematic diagram of the indoor unit of an air conditioner provided in an embodiment of this application. Detailed Implementation

[0034] 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.

[0035] The directional terms used in the embodiments of this application, such as "up," "down," and "side," are generally based on the relative relationships shown in the figures. These directional terms are used merely to more clearly describe the relationships between structures, not to describe absolute directions. When the product is placed in different orientations, the orientation may change; for example, "up" and "down" may be interchanged.

[0036] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0037] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0038] Currently, during the operation of heat exchange equipment such as air conditioners, fresh air systems, and dehumidifiers, condensate will continuously be generated on the surface of the heat exchanger, which is usually collected and discharged by the drip tray below the heat exchanger.

[0039] To prevent condensate from accumulating and overflowing, breeding microorganisms, or corroding equipment, related technologies often use a fan to extract water from the drip tray in a timely manner.

[0040] However, using a fan for suction requires the simultaneous installation of a water pump, air duct, and electrical control drive components. This not only results in large equipment size and high energy consumption, but also in the noise and vibration generated by the fan during continuous operation, leading to significant noise levels in the entire system.

[0041] Therefore, this application provides an indoor air conditioning unit, see reference. Figures 1-3 The indoor unit of the air conditioner includes a housing 100, a fan 200, a heat exchanger 300, and a drainage mechanism 400. The housing 100 has an air inlet 111 at its bottom and an air outlet 131 on its side. The fan 200 is installed inside the housing 100, with its air inlet side facing the air inlet 111 and its air outlet side facing the air outlet 131. The heat exchanger 300 is also installed inside the housing 100. Thus, when the fan 200 operates, it drives gas from the air inlet 111 inside the housing 100, where it exchanges heat with the heat exchanger 300 before being discharged from the air outlet 131.

[0042] The top of the housing 100 can be fixed to the ceiling by means of adsorption, adhesive, hanging lugs, bolt connection holes and buckles, which allows the air conditioner indoor unit to be fixed to the ceiling by means of suspension installation, realizing the integration of the air conditioner indoor unit and the indoor ceiling and improving the aesthetics.

[0043] The bottom and top surfaces of the housing 100 are arranged opposite each other along the height direction of the housing 100, and the side surface of the housing 100 is located between the top and bottom surfaces of the housing 100 and surrounds the top and bottom surfaces of the housing 100.

[0044] For example, the air inlet 111 and the air outlet 131 are through holes opened on the housing 100. By setting the air inlet 111 at the bottom of the housing 100, the indoor unit of the air conditioner can draw air from the indoor environment into the housing 100 through the air inlet 111 at the bottom. After heat exchange by the heat exchanger 300 and drive by the fan 200, the air in the housing 100 is then discharged into the indoor environment through the air outlet 131.

[0045] For example, the impeller shaft of the fan 200 extends along the height direction of the housing 100 to throw the air in the air chamber outwards, allowing it to be discharged into the indoor environment from the air outlet 131 on the side of the housing 100. Optionally, the air outlet direction may be perpendicular to the height direction of the housing 100 to discharge the air in the air chamber horizontally; or, the air outlet direction may be inclined to the height direction of the housing 100 to discharge the air in the air chamber obliquely downwards.

[0046] The air outlets 131 can be evenly or unevenly distributed on the side of the housing 100. The cross-sectional shape of the housing 100 along the axial direction of the fan 200 can be circular, elliptical, polygonal or other shapes.

[0047] For example, assuming the air-conditioned room is in cooling mode, the cross-sectional shape of the casing 100 along the axial direction of the fan 200 is circular, and air outlets 131 are evenly distributed on the side of the casing 100. When the fan 200 is working, cool air is blown out from all directions around the entire indoor unit of the air conditioner, thus achieving 360° surround airflow. That is, the cool air can be quickly and evenly diffused to all areas of the room, avoiding the discomfort caused by localized direct airflow, while effectively improving cooling efficiency.

[0048] The drainage mechanism 400 includes a water receiving tray 410 and a drain pipe 420. The water receiving tray 410 is fixed inside the housing 100 and is located near the bottom of the housing 100. The side of the water receiving tray 410 facing the heat exchanger 300 is provided with a water collecting trough 411, which is configured to collect the condensate dripping from the heat exchanger 300. The first end 421 of the drain pipe 420 extends into the water collecting trough 411, and the second end 422 of the drain pipe 420 extends outside the housing 100.

[0049] Thus, by employing the aforementioned drainage mechanism 400, a water receiving tray 410 is installed near the bottom inside the housing 100, and a water collection tank 411 is used to collect the condensate generated by the heat exchanger 300. Finally, the condensate in the water collection tank 411 is discharged through a drain pipe. This effectively avoids the problems of bacteria growth, odor, and damage to core components such as the fan and circuit board inside the indoor unit caused by the random dripping and accumulation of condensate. In addition, the height of the first end 421 of the drain pipe 420 can be greater than the height of the second end 422. This facilitates drainage through the siphon effect of the drain pipe 420, eliminating the need for additional power components such as water pumps. The structure is simple and compact, with low energy consumption and low operating noise. It can discharge the water accumulated in the water collection tank 411 to the outside of the housing 100 through the siphon effect, ensuring reliable and smooth drainage. Continuous drainage can be achieved without complex control, significantly improving the stability and service life of the device.

[0050] In summary, the casing of this application has an air inlet at the bottom and an air outlet on the side. The fan draws indoor air into the casing through the air inlet, where it exchanges heat with the heat exchanger before being discharged through the air outlet located on the periphery of the casing. This facilitates 360° surround airflow, ensuring that the heat-exchanged air is evenly and quickly diffused throughout the room, avoiding discomfort caused by localized direct airflow and effectively improving cooling efficiency. Simultaneously, the aforementioned drainage mechanism, with a water collection tray near the bottom of the casing and a water collection trough for centralized collection of condensate from the heat exchanger, effectively prevents the condensate from dripping and accumulating, thus avoiding problems such as bacterial growth, odor, and damage to core components like the fan and circuit boards inside the indoor unit. In addition, the drain pipe can drain water through the siphon effect, eliminating the need for additional power components such as water pumps. It has a simple and compact structure, low energy consumption and low operating noise. It can automatically discharge the water in the collection tank to the outside of the shell by relying on the siphon effect, ensuring reliable and smooth drainage. It can achieve continuous drainage without complicated control, which greatly improves the stability and service life of the device.

[0051] In some embodiments, the heat exchanger 300 is distributed around the fan 200; at least a portion of the water receiving tray 410 is located at the bottom of the heat exchanger 300 and is distributed around the fan 200; and the water collection tank 411 is distributed around the fan 200.

[0052] In this way, the layout of heat exchangers 300 surrounding the fan 200 is compact and has a high space utilization rate. The heat exchangers 300 are located on the air outlet side of the fan 200, which on the one hand ensures that the airflow and the heat exchangers 300 have full contact and heat exchange, avoiding insufficient local heat exchange due to uneven airflow distribution; on the other hand, it can significantly improve the flow rate and uniformity of the airflow through the heat exchangers 300, so that the heat exchange area of ​​the heat exchangers 300 can be used efficiently, thereby greatly improving the heat exchange efficiency.

[0053] At the same time, at least part of the water receiving tray 410 is set at the bottom of the heat exchanger 300 and is also distributed around the fan 200, which can collect the condensate generated in all directions around the heat exchanger 300 without dead angles, effectively preventing the condensate from dripping along the circumference of the heat exchanger 300 or remaining in the shell 100, and ensuring that the condensate is fully collected and quickly discharged.

[0054] For example, in combination Figure 3 The water receiving tray 410 includes an annular bottom wall 4123, and an inner wall 4121 and an outer wall 4122 located on the inner and outer sides of the annular bottom wall 4123, respectively, thus forming an annular groove into which the bottom of the heat exchanger 300 extends. The inner wall 4121 surrounds the outer periphery of the bottom of the fan 200, thus preventing the fan 200 from being submerged in water.

[0055] In some embodiments, the bottom of the water collection tank 411 is provided with a groove 415, and the first end 421 of the drain pipe 420 passes through the water collection tank 411 and extends into the groove 415.

[0056] This allows condensate to collect at the groove 415 under gravity, preventing water accumulation dead zones at the bottom of the water collection tank 411 and ensuring more thorough condensate collection; at the same time, it ensures that the first end 421 of the drain pipe 420 is always in the lowest water level area, making drainage smoother.

[0057] In some embodiments, the water receiving tray 410 includes a water receiving tray body 412 and a sleeve 413; the water receiving tray body 412 is located at the bottom of the heat exchanger 300 and is provided with a water collection trough 411; one end of the sleeve 413 is connected to the water receiving tray body 412, and the other end extends to the top of the housing 100, and the sleeve 413 is located at the groove 415. The first end 421 of the drain pipe 420 passes through the sleeve 413 and extends into the groove 415, and the second end 422 of the drain pipe 420 extends from the top of the housing 100 to the outside of the housing 100.

[0058] In this way, the sleeve 413 and the water receiving tray body 412 are integrally formed, which can reduce the assembly process. The cross-section of the sleeve 413 along the axial direction of the fan 200 can be rectangular, circular, elliptical, or other irregular shapes. The sleeve 413 is connected to both the inner wall 4121 and the outer wall 4122 of the water collection tank 411. This ensures that the sleeve 413 is located outside the water receiving tank and will not obstruct the water flow channel inside the water collection tank 411.

[0059] The sleeve 413 is located in the groove 415 of the water collection tank 411 and extends upward to the top of the housing 100. It can provide guidance and protection for the drain pipe 420, so that the drain pipe 420 maintains a fixed direction during installation and operation, and prevents the drain pipe 420 from shaking or shifting under the suction of the fan 200, ensuring that the drain pipe 420 is always in a stable working state.

[0060] In addition, the drain pipe 420 extends into the groove 415 at the bottom of the water collection tank 411 via the sleeve 413, which ensures that the water inlet is always at the lowest position where water accumulates. Condensate can fully accumulate in the groove 415 and be discharged by the drain pipe 420 in a timely manner, avoiding the formation of water accumulation dead corners in the water collection tank 411 and preventing odors, bacterial growth, or corrosion of parts due to long-term water accumulation.

[0061] Combination Figure 2 The heat exchanger 300 has a relief groove 310 on its periphery, and the sleeve 413 is embedded in the relief groove 310.

[0062] This creates a nested fit between the sleeve 413 and the heat exchanger 300 in the radial direction, effectively reducing the overall radial dimension of the indoor unit of the air conditioner and making the structure more compact.

[0063] For example, the clearance groove 310 can be made to extend through the entire heat exchanger 300 along the radial direction of the heat exchanger 300, that is, the heat exchanger 300 has a C-shaped structure and the sleeve 413 is located at the opening of the C-shaped structure.

[0064] Of course, it is also possible to make the clearance groove not penetrate the heat exchanger along the radial direction of the heat exchanger, which is equivalent to the heat exchanger including an annular heat exchanger and a C-type heat exchanger, with the sleeve located at the opening of the C-type heat exchanger.

[0065] In some embodiments, combined with Figure 4 The top surface of the housing 100 is the mounting surface 125, and the bottom of the water collection tank 411 is inclined relative to the mounting surface 125. The distance between the bottom of the water collection tank 411 on the side closer to the groove 415 and the mounting surface 125 is the first distance H1, and the distance between the bottom of the water collection tank 411 on the side farther from the groove 415 and the mounting surface 125 is the second distance H2. The first distance H1 is greater than the second distance H2.

[0066] In this embodiment, the top surface of the housing 100 is set as the mounting surface 125, so that the housing 100 can be fixed to the ceiling of the room by a top suction installation method, making full use of the unused upper space of the room, without occupying the floor and wall area, and improving the space utilization rate.

[0067] Meanwhile, the top-mounted installation allows the indoor unit to be positioned at a higher level in the room. Combined with the air outlets 131 evenly distributed around the casing 100, the cool air naturally diffuses from high up to low and around, achieving 360° surround airflow from top to bottom, avoiding the discomfort caused by cold air blowing directly on the human body and improving user comfort.

[0068] The bottom of the water collection tank 411 is inclined relative to the mounting surface 125 on the top surface of the shell 100, and the bottom of the tank is lower on the side closer to the groove 415 and higher on the side farther from the groove 415. This allows the condensate entering the water collection tank 411 to automatically flow and collect towards the groove 415 under the action of gravity, avoiding the condensate from stagnating in the water collection tank 411 or creating dead corners for water accumulation, ensuring more thorough collection of condensate and smoother drainage.

[0069] For example, the inclination angle of the bottom of the groove relative to the mounting surface 125 is greater than 1 degree. This provides sufficient gravity flow slope for the condensate, ensuring that the condensate can automatically and stably collect at the groove 415, effectively avoiding problems such as slow water flow and water accumulation caused by too small an inclination angle.

[0070] Combination Figure 3The drainage mechanism 400 also includes a water storage box 430, on which an overflow port 431 is provided. Along the axial direction of the fan 200, the overflow port 431 is located between the first end 421 of the drain pipe 420 and the opening of the water collection tank 411. The second end 422 of the drain pipe 420 extends into the water storage box 430 and is located between the bottom of the water storage box 430 and the overflow port 431.

[0071] The opening and bottom of the water collection tank 411 are positioned opposite each other, and the bottom of the heat exchanger 300 extends into the water collection tank 411 from the opening.

[0072] In this way, during the siphon drainage process, the drain pipe 420 continuously discharges the condensate in the water collection tank 411 into the water storage box 430, and the water level in the water storage box 430 gradually rises. Since the second end 422 of the drain pipe 420 is located between the bottom of the water storage box 430 and the overflow port 431, when the water level in the water storage box 430 rises to a height slightly higher than the second end 422 of the drain pipe 420, the pipe opening can be submerged, thereby forming a stable water seal in the drainage path. This liquid seal can effectively block the gas communication between the inside of the shell 100 and the outside atmosphere, preventing outside air from being drawn into the shell 100 through the drain pipe 420.

[0073] When the water level in the water storage box 430 rises to the height of the overflow port 431, excess condensate can be discharged in a timely manner through the overflow port 431. This ensures that the condensate in the water collection tank 411 can be discharged quickly.

[0074] Furthermore, the overflow port 431 is located between the first end 421 of the drain pipe 420 and the bottom of the water collection tank 411, so that the water in the water collection tank 411 can be drained away in time through the overflow port 431 of the water storage box 430.

[0075] It should also be noted that, along the axial direction of the fan 200, the distance between the first end 421 of the drain pipe 420 and the mounting surface is less than the distance between the second end 422 of the drain pipe 420 and the mounting surface, which ensures the generation of the siphon effect.

[0076] Combination Figure 5 The drainage mechanism 400 also includes a check valve 440, which is installed at the opening of the first end 421 of the drain pipe 420 and is used to prevent liquid in the drain pipe 420 from flowing back into the water receiving pan 410.

[0077] In this way, the check valve 440 effectively prevents condensate in the drain pipe 420 from flowing back into the water collection tank 411 of the water receiving pan 410. When the device stops or the siphon is temporarily interrupted, the check valve 440 can prevent the water in the pipe from flowing back, so that the inside of the drain pipe 420 is always full of liquid, avoiding the entry of air into the drain pipe 420 due to liquid backflow, which would disrupt the siphon condition.

[0078] Combination Figure 2 The housing 100 includes a top plate 120 and a bottom plate 110 disposed opposite to each other, and an air outlet grille 130 located between the top plate 120 and the bottom plate 110; the two ends of the air outlet grille 130 are respectively connected to the top plate 120 and the bottom plate 110; wherein, the air inlet 111 is distributed on the bottom plate 110, and the air outlet grille 130 is provided with an air outlet 131.

[0079] In this way, the housing 100 adopts an overall structure formed by the top plate 120, the bottom plate 110 and the air outlet grille 130. By arranging the air inlet 111 on the bottom plate 110 and the air outlet 131 on the air outlet grille 130, and with the top suction installation method, a stable airflow path with downward air intake and circumferential air outlet can be formed.

[0080] The air outlet grille 130 connects the top plate 120 and the bottom plate 110, ensuring the overall strength and rigidity of the housing 100, and also serves as a direct air outlet channel, eliminating the need for the air outlet 131 structure, simplifying the overall assembly and reducing costs. At the same time, the air outlet grille 130 can also guide and reduce the airflow at the air outlet 131, reducing airflow noise and improving user comfort.

[0081] Furthermore, an installation opening is provided at the center of the base plate 110, with an air inlet grille 113 located within the installation opening and an air inlet 111 mounted on the air inlet grille 113. Similarly, the air inlet grille 113 can also streamline and reduce the airflow at the air inlet 111, thereby reducing exhaust noise and improving user comfort.

[0082] Combination Figure 4 A through hole 121 can be made on the top plate 120 at the position corresponding to the sleeve 413, so that the drain pipe 420 can extend into the ceiling or wall through the through hole 121 and then extend from the ceiling or wall to the outside, so as not to affect the appearance of the entire air conditioner indoor unit.

[0083] Combination Figure 1 and Figure 2 The indoor unit of the air conditioner also includes a functional module 500, which is connected to the side of the base plate 110 away from the top plate 120 and located on the outer periphery of the air inlet 111.

[0084] In this way, by placing the functional module 500 on the side of the base plate 110 away from the top plate 120 and on the outer periphery of the air inlet 111, the unused space below the base plate 110 can be fully utilized, allowing the functional module 500 to be integrated with the housing 100, resulting in a more compact structure. On the other hand, the functional module 500 is arranged around the air inlet 111, which will not obstruct the air intake path and will not affect the airflow from the base plate 110 into the housing 100, ensuring smooth air intake and sufficient air volume for the fan 200. At the same time, this arrangement facilitates the independent disassembly and maintenance of the functional module 500.

[0085] The functional module 500 includes at least one of a display screen, a lamp, a projector, and a speaker.

[0086] For example, functional module 500 includes a lighting fixture. By configuring functional module 500 as a lighting fixture, the indoor air conditioning unit and the lighting module are integrated into one unit, forming an integrated air conditioning and lighting unit. This achieves multiple functions in one unit, providing both indoor temperature regulation and overhead lighting, effectively reducing the number of individual indoor lighting fixtures required, saving indoor installation space, and simplifying the interior design.

[0087] In some embodiments, the housing 100 is a cylindrical structure; or the functional module 500 is arranged in a ring around the outer periphery of the air inlet 111; or the housing 100 is a cylindrical structure and the functional module 500 is arranged in a ring around the outer periphery of the air inlet 111.

[0088] In this way, the cylindrical shell 100 and the annular functional module 500 work together to achieve 360° surround airflow, making the airflow more uniform and the indoor temperature adjustment faster.

[0089] Combination Figure 6 The fan 200 includes backward-curved impellers. Multiple backward-curved impellers are evenly arranged around a rotating shaft, one end of which is connected to a motor. The motor drives the multiple backward-curved impellers to rotate simultaneously via the rotating shaft. The motor is fixed to the top plate 120 on the side near the bottom plate 110.

[0090] The backward-curved impeller has a straighter air outlet direction, allowing the airflow to flow into the gap between adjacent fins of the heat exchanger 300 as much as possible after exiting the impeller. This reduces the angle between the airflow direction and the fin extension direction, decreasing the impact of airflow on the fins and reducing fin vibration and abnormal noise. Furthermore, it reduces airflow circling and resistance losses on the fin surface, allowing more airflow to pass smoothly through the heat exchange area, improving heat exchange efficiency while further reducing overall unit operating noise.

[0091] Furthermore, in combination Figure 7The base plate 110 also features a guide ring 112, which is an annular structure. The opening of the guide ring 112 is smaller than the opening of the air inlet 111. The inner edge of the guide ring 112 folds upward, forming an arc-shaped flange. The distance between the flange and the inner wall 4121 of the air inlet end of the fan 200 is 2 mm to 30 mm. This design prevents the airflow discharged from the outlet end of the fan 200 from flowing back to the air inlet 111 due to the obstruction of the guide structure, reducing the occurrence of backflow and improving airflow efficiency. Furthermore, the flange guides the airflow at the air inlet 111, reducing airflow resistance and allowing indoor air to be drawn into the fan 200 more smoothly, thus reducing noise problems caused by poor airflow. In addition, the gap between the flange and the inner wall of the air inlet end of the fan is 2 mm to 30 mm to ensure the normal rotation of the fan 200 and avoid the problem of the fan 200 rubbing against the guide ring 112 during rotation due to the small gap between the two.

[0092] Of course, in other embodiments, the fan includes a centrifugal radial impeller.

[0093] Secondly, this application also provides an air conditioning system, which includes an outdoor unit, a connecting pipe, and an indoor unit provided in any of the above embodiments, wherein the outdoor unit is connected to the indoor unit via the connecting pipe.

[0094] This air conditioning system can be used for both residential and commercial purposes; it can be installed before or after renovation. When installed before renovation, the drain pipe (420mm) and electrical wiring are embedded in the wall to improve aesthetics.

[0095] The air conditioning system provided in this application includes the air conditioning indoor unit provided in any of the above embodiments, and therefore has the beneficial effects of the air conditioning indoor unit of any of the above embodiments, which will not be repeated here.

[0096] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0097] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0098] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. An air conditioner indoor unit characterized by comprising: It includes a housing (100), a fan (200), a heat exchanger (300), and a drainage mechanism (400). The bottom of the housing (100) is provided with an air inlet (111), and the side of the housing (100) is provided with an air outlet (131). The fan (200) is installed inside the housing (100), with the air inlet side of the fan (200) facing the air inlet (111) and the air outlet side of the fan (200) facing the air outlet (131). The heat exchanger (300) is installed inside the housing (100); The drainage mechanism (400) includes a water receiving tray (410) and a drain pipe (420); the water receiving tray (410) is fixed inside the housing (100) and distributed near the bottom of the housing (100); the water receiving tray (410) has a water collection tank (411) on the side facing the heat exchanger (300), and the water collection tank (411) is configured to receive the condensate dripping from the heat exchanger (300); the first end (421) of the drain pipe (420) extends into the water collection tank (411), and the second end (422) of the drain pipe (420) extends outside the housing (100). 2.The indoor unit of the air conditioner according to claim 1, characterized by, The heat exchanger (300) is distributed around the fan (200); at least a portion of the water receiving tray (410) is located at the bottom of the heat exchanger (300) and is distributed around the fan (200); the water collection tank (411) is distributed around the fan (200).

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The bottom of the water collection tank (411) is provided with a groove (415), and the first end (421) of the drain pipe (420) passes through the water collection tank (411) and extends into the groove (415).

4. The indoor unit of the air conditioner according to claim 3, characterized in that, The water receiving tray (410) includes: a water receiving tray body (412) and a sleeve (413); the water receiving tray body (412) is located at the bottom of the heat exchanger (300) and is provided with the water collection tank (411); one end of the sleeve (413) is connected to the water receiving tray body (412), and the other end extends to the top of the shell (100), and the sleeve (413) is located at the groove (415); The first end (421) of the drain pipe (420) passes through the sleeve (413) and extends into the groove (415), while the second end (422) of the drain pipe (420) extends from the top of the housing (100) to the outside of the housing (100).

5. The indoor unit of the air conditioner according to claim 4, characterized in that, The heat exchanger (300) is provided with a relief groove (310) on its periphery, and the sleeve (413) is embedded in the relief groove (310).

6. The indoor unit of the air conditioner according to claim 3, characterized in that, The top surface of the housing (100) is the mounting surface (125), and the bottom of the water collection tank (411) is inclined relative to the mounting surface (125). The distance between the bottom of the water collection tank (411) on the side closer to the groove (415) and the mounting surface (125) is the first distance (H1), and the distance between the bottom of the water collection tank (411) on the side away from the groove (415) and the mounting surface (125) is the second distance (H2). The first distance (H1) is greater than the second distance (H2).

7. The indoor unit of the air conditioner according to any one of claims 2-6, characterized in that, The drainage mechanism (400) also includes a water storage box (430), on which an overflow port (431) is provided. Along the axial direction of the fan (200), the overflow port (431) is located between the first end (421) of the drain pipe (420) and the opening of the water collection tank (411). The second end (422) of the drain pipe (420) extends into the water storage box (430) and is located between the bottom of the water storage box (430) and the overflow port (431).

8. The indoor unit of the air conditioner according to any one of claims 1-6, characterized in that, The drainage mechanism (400) also includes a check valve (440), which is installed at the opening of the first end (421) of the drain pipe (420) and is used to prevent liquid in the drain pipe (420) from flowing back into the water receiving tray (410).

9. The indoor unit of the air conditioner according to any one of claims 1-6, characterized in that, The housing (100) includes: a top plate (120) and a bottom plate (110) disposed opposite to each other, and an air outlet grille (130) located between the top plate (120) and the bottom plate (110); the two ends of the air outlet grille (130) are respectively connected to the top plate (120) and the bottom plate (110); The air inlet (111) is distributed on the base plate (110), and the air outlet (131) is provided on the air outlet grille (130).

10. The indoor unit of the air conditioner according to claim 9, characterized in that, The indoor unit of the air conditioner also includes a functional module (500), which is connected to the side of the base plate (110) away from the top plate (120) and located on the outer periphery of the air inlet (111).

11. The indoor unit of the air conditioner according to claim 10, characterized in that, The functional module (500) includes at least one of a display screen, a lamp, a projector, and a speaker.

12. The indoor unit of the air conditioner according to claim 10, characterized in that, The shell (100) has a cylindrical structure; And / or, the functional module (500) is arranged in a ring structure around the outer periphery of the air inlet (111).

13. The indoor unit of the air conditioner according to any one of claims 1-6 and 10-12, characterized in that, The fan (200) includes a backward-curved impeller.

14. An air conditioning system, characterized in that, The air conditioning system includes an outdoor unit, a connecting pipe, and an indoor air conditioning unit as described in any one of claims 1-13, wherein the outdoor unit is connected to the indoor air conditioning unit through the connecting pipe.

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