Indoor unit and heating and ventilation device

Abstract

The application provides an indoor unit and a heating and ventilation device. The indoor unit comprises a main shell, a heat exchanger, an input pipe, an output pipe, a sealing assembly and a water pan. The main shell forms a heat exchange cavity. The heat exchanger comprises a heat exchange main body and a distribution header assembly. The heat exchange main body is arranged in the heat exchange cavity, and the distribution header assembly is connected to the first end of the heat exchange main body. The input pipe and the output pipe are both connected to the distribution header assembly. The sealing assembly is connected to the main shell, and the sealing assembly and the main shell form a first sealing cavity. The distribution header assembly extends from the heat exchange cavity to the first sealing cavity, and the input pipe and the output pipe are both located in the first sealing cavity. The water pan is connected to the main shell. A water guide structure is arranged on the sealing assembly and located in the first sealing cavity. The water guide structure is used for guiding the condensed water to the water pan. The indoor unit can prevent the condensed water from flowing to the space where the user is located to a certain extent.

Description

Technical Field

[0001] This application relates to the field of heating, ventilation and air conditioning (HVAC) technology, and in particular to an indoor unit and HVAC equipment using the indoor unit. Background Technology

[0002] Slim duct indoor units, with their compact structure and flexible installation methods, are widely used in various indoor spaces. During operation, a large amount of condensate will be generated on the evaporator surface and piping system. If it cannot be drained in a timely and effective manner, it will directly affect the operating efficiency and service life of the equipment.

[0003] In related technologies, an indoor unit typically includes a main casing, a sealing plate structure, a heat exchanger, and input and output pipes connected to the heat exchanger. The sealing plate structure is generally made of sheet metal and is connected to the main casing to form a sealed cavity. The input and output pipes are respectively connected to the inlet and outlet of the heat exchanger. A portion of the input and output pipes is located inside the sealed cavity, while the other portion extends to the outside of the indoor unit to connect with the outdoor unit's piping.

[0004] However, in the above-mentioned indoor unit structure, condensation easily forms on the surfaces of the input and output pipes. This condensation can easily flow along the pipe walls or sheet metal surfaces, and even drip into the user's space through equipment gaps, causing inconvenience and affecting the overall user experience. Utility Model Content

[0005] This application provides an indoor unit and HVAC equipment that can, to a certain extent, prevent condensate from flowing from the surface of the inlet and outlet pipes into the user's space, thereby improving the performance of the indoor unit.

[0006] On one hand, this application provides an indoor unit, including a main housing, a heat exchanger, an input pipe, an output pipe, a sealing assembly, and a drip tray. The main housing forms a heat exchange cavity. The heat exchanger includes a heat exchange body and a distribution manifold assembly. The heat exchange body is disposed in the heat exchange cavity, and the distribution manifold assembly is connected to a first end of the heat exchange body. Both the input pipe and the output pipe are connected to the distribution manifold assembly. The sealing assembly is connected to the main housing, and the sealing assembly and the main housing enclose a first sealing cavity. The distribution manifold assembly extends from the heat exchange cavity to the first sealing cavity, and both the input pipe and the output pipe are located within the first sealing cavity. The drip tray is connected to the main housing. The sealing assembly is provided with a water guiding structure, which is located within the first sealing cavity, and the water guiding structure is used to guide condensate to the drip tray.

[0007] As an optional implementation, the water guiding structure includes a water guiding channel; wherein the water guiding channel extends obliquely from away from the water receiving tray to near the water receiving tray, and the end of the water guiding channel near the water receiving tray is closer to the bottom wall of the water receiving tray.

[0008] As an optional implementation, the water guide channel extends obliquely along the width direction of the indoor unit; wherein the angle between the extension direction of the water guide channel and the horizontal direction is greater than or equal to 2 degrees and less than or equal to 10 degrees.

[0009] As an optional implementation, the water guiding structure also includes water guiding ribs located on both sides of the water guiding channel; wherein the water guiding ribs have a first end located close to the water guiding channel and a second end located away from the water guiding channel, and the first end is located closer to the water receiving tray than the second end.

[0010] As an optional implementation, multiple water guide ribs located on the same side of the water guide channel are arranged along the width direction of the indoor unit, and the multiple water guide ribs are evenly spaced.

[0011] As an optional implementation, the sealing assembly is also provided with a water-blocking rib, which is located between the water guiding structure and the main housing. The water guiding rib located between the water guiding groove and the water-blocking rib is connected to the water guiding rib and the water-blocking rib. The water-blocking rib extends obliquely from away from the water receiving plate to close to the water receiving plate, and the oblique angle of the water-blocking rib is consistent with the oblique angle of the water guiding groove.

[0012] As an optional implementation, the sealing assembly is also provided with a water receiving plate, which is located outside the first sealing cavity; the condensate flowing out of the water guide groove flows through the water receiving plate into the water receiving pan.

[0013] As an optional implementation, the first sealing cavity includes a first sub-cavity and a second sub-cavity, which are connected to each other; the sealing assembly includes a first seal, a second seal, and a third seal, with the second seal engaging between the first seal and the third seal; the first sub-cavity is enclosed by the first seal, the second seal, and the main housing, and the second sub-cavity is enclosed by the third seal and the main housing; wherein, a water guiding structure is disposed on the second seal.

[0014] As an optional implementation, the second seal includes a first sealing portion, a second sealing portion, and a connecting portion connected together; one end of the first sealing portion away from the second sealing portion abuts against the main housing, and one end of the second sealing portion away from the first sealing portion abuts against the main housing, and the second sealing portion is connected to the main housing; one end of the first sealing portion is engaged with the first seal, and the connecting portion is connected to the other end of the first sealing portion and engaged with the third seal; wherein, the extending direction of the second sealing portion is consistent with the extending direction of the water guide groove, and the water guide structure is disposed on the second sealing portion.

[0015] As an optional implementation, the inner side of the first sealing part is provided with a plurality of first reinforcing ribs and a plurality of second reinforcing ribs; the plurality of first reinforcing ribs are arranged at intervals in the horizontal direction, the plurality of second reinforcing ribs are arranged at intervals in the vertical direction, and the first reinforcing ribs and the second reinforcing ribs intersect.

[0016] As an optional implementation, the water guide rib includes a first sub-rib and a second sub-rib. The first sub-rib is located between the first sealing part and the water guide groove, and the second sub-rib is located between the main shell and the water guide groove; wherein, the first sub-rib is connected to the first reinforcing rib.

[0017] As an optional implementation, the bottom wall of the water receiving tray is located in a plane; the projection area of ​​the first seal on the plane falls within the bottom wall of the tray, and a portion of the projection area of ​​the second seal on the plane falls within the bottom wall of the tray.

[0018] As an optional implementation, the main housing includes a top plate assembly, a bottom plate assembly, a surrounding plate, a first side plate, and a second side plate. The top plate assembly and the bottom plate assembly are disposed opposite to each other, and the first side plate and the second side plate are disposed opposite to each other. The surrounding plate, the first side plate, and the second side plate are all connected between the top plate assembly and the bottom plate assembly. The top plate assembly, the bottom plate assembly, the surrounding plate, the first side plate, and the second side plate enclose a heat exchange cavity. The top plate assembly, the bottom plate assembly, the surrounding plate, and the first side plate are all connected to a sealing assembly, and the sealing assembly, the top plate assembly, the bottom plate assembly, the surrounding plate, and the first side plate together enclose a first sealing cavity.

[0019] On the other hand, this application provides a heating and ventilation device, including an outdoor unit and the aforementioned indoor unit.

[0020] The indoor unit and HVAC equipment provided in this application utilize a water-guiding structure located within the first sealing cavity on the sealing assembly. This effectively collects and directs the condensate generated on the surfaces of the inlet and outlet pipes to the drip tray, where it is discharged together with the condensate generated by the evaporator. This, to a certain extent, solves the problem of condensate flowing freely and dripping easily from gaps in sheet metal sealing plate structures in related technologies, and to some extent prevents water droplets from falling into the user's space and affecting the user experience.

[0021] Moreover, the water-guiding structure ensures a clear and controllable condensate drainage path, reducing the risk of corrosion to other internal components and thus improving the reliability and lifespan of the indoor unit. Furthermore, this solution achieves effective condensate drainage through structural optimization of the sealing components without altering the overall compact layout, resulting in a simple structure and low implementation cost. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1An exploded view of a first partial structure of the indoor unit provided in an embodiment of this application;

[0024] Figure 2 for Figure 1 A schematic diagram of the assembly structure shown;

[0025] Figure 3 for Figure 1 Enlarged schematic diagram of the local structure at point A;

[0026] Figure 4 for Figure 2 A schematic diagram of the first partial structure of the structure shown;

[0027] Figure 5 for Figure 2 A schematic diagram of the second partial structure shown;

[0028] Figure 6 for Figure 1 An exploded view from another perspective;

[0029] Figure 7 for Figure 6 Enlarged schematic diagram of the local structure at point B;

[0030] Figure 8 for Figure 5 A schematic diagram of the three-dimensional structure from another perspective;

[0031] Figure 9 for Figure 2 A schematic diagram of the three-dimensional structure from another perspective;

[0032] Figure 10 for Figure 9 Enlarged schematic diagram of the local structure at point C;

[0033] Figure 11 A three-dimensional structural diagram of the third seal in the indoor unit provided in an embodiment of this application;

[0034] Figure 12 for Figure 11 A schematic diagram of the three-dimensional structure from another perspective;

[0035] Figure 13 for Figure 5 Enlarged schematic diagram of the local structure at point D;

[0036] Figure 14 This is a schematic diagram of the structure of the enclosure panel in the indoor unit provided in an embodiment of this application;

[0037] Figure 15 A three-dimensional structural schematic diagram of the second seal in the indoor unit provided in an embodiment of this application;

[0038] Figure 16 for Figure 15 A structural diagram from another perspective;

[0039] Figure 17 for Figure 15 A structural diagram from another perspective;

[0040] Figure 18 for Figure 2 A schematic diagram of the third local structure shown;

[0041] Figure 19 for Figure 18 A magnified view of the local structure at point E in the middle;

[0042] Figure 20 A three-dimensional structural diagram of the sealing assembly in the indoor unit provided in an embodiment of this application;

[0043] Figure 21 for Figure 2 A schematic diagram of the fourth local structure shown in the diagram;

[0044] Figure 22 for Figure 21 A cross-sectional view along the FF direction;

[0045] Figure 23 for Figure 22 Enlarged schematic diagram of the local structure at point G;

[0046] Figure 24 for Figure 21 A three-dimensional structural diagram of the structure shown;

[0047] Figure 25 for Figure 24 Enlarged schematic diagram of the local structure at point H;

[0048] Figure 26 A three-dimensional structural diagram of the first sealing element in the indoor unit provided in the embodiment of this application, viewed from a first perspective.

[0049] Figure 27 A three-dimensional structural diagram of the first sealing element in the indoor unit provided in the embodiment of this application, viewed from a second perspective.

[0050] Figure 28 A three-dimensional structural diagram of the first sealing element in the indoor unit provided in the embodiment of this application, viewed from a third perspective.

[0051] Figure 29 A three-dimensional structural diagram of the first seal in the indoor unit provided in the embodiment of this application, viewed from a fourth perspective.

[0052] Figure 30A three-dimensional structural diagram of the first side panel in the indoor unit provided in an embodiment of this application;

[0053] Figure 31 A schematic diagram of a partial structure of the sealing assembly in the indoor unit provided in an embodiment of this application;

[0054] Figure 32 for Figure 31 Cross-sectional view along direction II;

[0055] Figure 33 for Figure 32 Enlarged schematic diagram of the local structure at point J;

[0056] Figure 34 This is a three-dimensional structural diagram of the indoor unit provided in an embodiment of this application.

[0057] Explanation of reference numerals in the attached figures:

[0058] 1. Main casing; 2. Heat exchanger; 3. Inlet pipe; 4. Outlet pipe; 5. Sealing assembly; 6. Sensor; 7. First sealing cavity; 8. Sealing plate; 9. Conduit;

[0059] 11. Heat exchange chamber; 12. Top plate assembly; 13. Bottom plate assembly; 14. Enclosure panel; 15. Air outlet; 16. First side plate; 17. Second side plate; 21. Heat exchange body; 22. Distribution manifold assembly; 23. Heat exchange tube assembly; 51. First seal; 52. Second seal; 53. Third seal; 71. First sub-cavity; 72. Second sub-cavity; 10. Second sealing cavity; 20. Electrical control box; 30. Water receiving tray; 31. Tray body; 32. Third foam; 33. Tray bottom wall; 34. Drain pipe; 40. Outer shell; 50. Fan;

[0060] 100. Indoor unit; 121. First sub-board; 122. Second sub-board; 123. First foam; 124. Second foam; 131. Heat exchange chamber base plate; 132. Electrical control base plate; 133. First extension plate; 134. Second extension plate; 141. Air inlet; 142. Enclosure body; 143. Limiting flange; 144. First connecting piece; 145. First reinforcing protrusion; 146. Second connecting piece; 147. Second reinforcing protrusion; 161. First through hole; 162. Second fixing hole; 163. Positioning hole; 164. 171. First through hole; 172. Second through hole; 221. First piping; 231. Second piping; 511. Sealing cover; 512. Water receiving plate; 513. Reinforcing plate; 521. First sealing part; 522. Second sealing part; 523. Connecting part; 524. First reinforcing rib; 525. Second reinforcing rib; 526. Water guiding structure; 527. Water-blocking rib; 528. Third buckle; 531. Box body; 532. Cover plate; 533. First buckle; 721. Opening; 401. External air inlet;

[0061] 1321. Mounting groove; 1441. First connecting hole; 1461. Third connecting hole; 2211. First arc-shaped pipe section; 2212. Bending part; 2311. Second arc-shaped pipe section; 5111. Connecting cover plate; 5112. First abutting cover plate; 5113. Second abutting cover plate; 5114. Extension connecting plate; 5115. First fixing hole; 5116. Positioning post; 5117. Notch; 5118. Snapping protrusion; 5119. Deformation notch; 5120. Stopping protrusion; 5130. Second reinforcing rib; 5140. Third reinforcing rib; 5211. Sealing main part; 5212. Sealing extension part; 5221. Fourth connecting hole; 5231. Second snapping hole; 5232. Snapping protrusion; 5241. First rib section; 5242. Second rib section ; 5261, Water guide channel; 5262, Water guide rib; 5263, First end; 5264, Second end; 5265, First sub-rib; 5266, Second sub-rib; 5281, Slot; 5311, Main body; 5312, Extension; 5313, Connecting flange; 5314, First sub-flange; 5315, Second sub-flange; 5316, First snap-fit ​​hole; 5317, Fixing base; 5318, Rotating groove; 5319, First extension sub-part; 5320, Second extension sub-part; 5330, Second connecting hole; 5331, Second reinforcing protrusion; 5332, First reinforcing rib; 5333, Second buckle; 5334, Snap-fit ​​groove; 5321, Main body; 5322, Recessed plate; 5323, Rotating shaft; 5324, Stop plate.

[0062] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0063] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0064] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0065] Please combine Figures 1 to 4 , Figure 1 This is an exploded view of a first partial structure of the indoor unit provided in an embodiment of this application. Figure 2 for Figure 1 A schematic diagram of the assembly structure shown. Figure 3 for Figure 1 A magnified view of the local structure at point A. Figure 4 for Figure 2 A schematic diagram of the first partial structure of the structure shown. As shown in the figure, this embodiment provides an indoor unit 100, including a main housing 1, a heat exchanger 2, an input pipe 3, an output pipe 4, a sealing assembly 5, and a sensor 6. The reference numerals of the indoor unit 100 are shown in the following figures.

[0066] Please continue to combine Figure 5 , Figure 5 for Figure 2 The diagram shows a second partial structure of the structure shown. Specifically, the main housing 1 forms a heat exchange cavity 11; the heat exchanger 2 includes a heat exchange body 21 and a distribution manifold assembly 22, the heat exchange body 21 is disposed in the heat exchange cavity 11, and the distribution manifold assembly 22 is connected to the first end of the heat exchange body 21; the input pipe 3 and the output pipe 4 are both connected to the distribution manifold assembly 22; the sealing assembly 5 includes a first seal 51, a second seal 52 and a third seal 53, the second seal 52 is engaged between the first seal 51 and the third seal 53, the first seal 51, the second seal 52 and the third seal 53 are all connected to the main housing 1, the sealing assembly 5 and the main housing 1 enclose a first sealing cavity 7, the distribution manifold assembly 22 extends from the heat exchange cavity 11 to the first sealing cavity 7, and the input pipe 3 and the output pipe 4 are both located in the first sealing cavity 7; the sensor 6 is installed in the main housing 1, the sensor 6 is located in the first sealing cavity 7, and the sensor 6 is used to detect the heat exchange medium in the first sealing cavity 7.

[0067] In the indoor unit 100 provided in this embodiment, the sealing assembly 5 adopts a combination of a first sealing element 51, a second sealing element 52, and a third sealing element 53. The second sealing element 52 is snap-fitted between the first sealing element 51 and the third sealing element 53. Compared with the related technology where multiple independent sheet metal components are connected by screws, the sealing assembly 5 in this embodiment reduces the number of screws used and simplifies the assembly relationship between the sealing elements. Because the snap-fit ​​connection does not require tightening the screws one by one, during assembly, it is only necessary to align and snap the second sealing element 52 with the first sealing element 51 and the third sealing element 53. Disassembly can also be achieved through a simple separation operation, thereby simplifying the assembly and disassembly process.

[0068] Secondly, the sealing assembly 5 is connected to the main housing 1 and encloses it to form the first sealing cavity 7, which houses components such as the distribution manifold assembly 22, the input pipe 3, and the output pipe 4 that are prone to heat exchange medium leakage. At the same time, the sensor 6 is located in the first sealing cavity 7 and can detect leaked heat exchange medium in a timely manner. This not only ensures effective sealing of areas where leakage may occur and prevents heat exchange medium from accumulating in enclosed spaces such as ceilings and causing safety hazards, but also allows the sensor 6 to detect leaks in a timely manner to ensure system operating efficiency and equipment life.

[0069] It should be noted that the heat exchange medium mentioned above can be a refrigerant. No specific restrictions are placed on the type of heat exchange medium.

[0070] Compared to the complex structure of multiple sheet metal pieces in related technologies, the sealing component 5 in this embodiment has a relatively small number of parts, and the assembly relationship is simpler due to the existence of snap-fit ​​connections. This makes it easier for staff to disassemble and assemble the sealing component 5 to access internal components such as the distribution manifold component 22 when maintenance is required, thereby improving the overall maintainability.

[0071] In order to more easily achieve the above-mentioned snap-fit ​​connection method, in some embodiments, the first seal 51, the second seal 52 and the third seal 53 are all plastic parts.

[0072] Understandably, plastic parts have good plasticity, making it easy to process into structural shapes that meet the requirements of snap-fit ​​connections. This allows for more precise and tighter snap-fit ​​between the first seal 51 and the second seal 52, and between the second seal 52 and the third seal 53, thereby enhancing the overall sealing performance of the sealing assembly 5 and ensuring that the first sealing cavity 7 can effectively block refrigerant leakage.

[0073] Secondly, compared to sheet metal parts used for sealing in related technologies, plastic parts are lighter, which can reduce the load of the sealing component 5 on the main housing 1, reduce the labor intensity during installation and disassembly, make it easier for workers to disassemble and assemble, further simplifying the disassembly and assembly operation. Combined with the snap-fit ​​connection design, it can better improve the overall maintainability.

[0074] In addition, plastic parts have a certain degree of elasticity and cushioning performance, which can reduce hard collisions and wear between various seals and between seals and main housing 1 during transportation or use, extend the service life of sealing components 5, and reduce the problem of seal loosening caused by vibration and other factors, ensuring stable sealing effect during long-term use, thereby continuously ensuring system operating efficiency and equipment life, and avoiding the occurrence of safety hazards.

[0075] Please continue to combine Figure 6 and Figure 7 , Figure 6 for Figure 1 An exploded view from another perspective Figure 7 for Figure 6 A magnified view of the partial structure at point B. It can be understood that in order to realize the basic function of heat exchanger 2, a pipeline for the flow of heat exchange medium should also be connected to the second end of heat exchange body 21. Specifically, heat exchanger 2 also includes heat exchange tube assembly 23, which is connected to the second end of heat exchange body 21.

[0076] Of course, there may be leakage of heat exchange medium at the location of heat exchange tube assembly 23. Based on this, the indoor unit 100 provided in this embodiment also includes a sealing plate 8 and a conduit 9. The sealing plate 8 is connected to the main housing 1, and the sealing plate 8 and the main housing 1 enclose a second sealing cavity 10. The heat exchange tube assembly 23 extends from the heat exchange cavity 11 to the second sealing cavity 10. The conduit 9 passes through the main housing 1, and the first end of the conduit 9 communicates with the first sealing cavity 7, and the second end of the conduit 9 communicates with the second sealing cavity 10.

[0077] The sealing plate 8 and the main shell 1 enclose the second sealing cavity 10, which extends the heat exchange tube assembly 23, a component that may also leak heat exchange medium, from the heat exchange cavity 11 into it. Together with the first sealing cavity 7, it seals different key parts of the heat exchanger 2, achieving zonal coverage of potential leakage points and avoiding the protection blind spots that may exist in a single sealing area. This more comprehensively prevents heat exchange medium from leaking into enclosed spaces such as the ceiling.

[0078] Secondly, the conduit 9 passes through the main housing 1 and connects the first sealing cavity 7 and the second sealing cavity 10. This design allows the independent first sealing cavity 7 and the second sealing cavity 10 to form an interconnected whole space. When a heat exchange medium leak occurs in either sealing cavity, the leaked heat exchange medium can flow between the two chambers through the conduit 9. Since the first sealing cavity 7 is equipped with a sensor 6 for detecting the heat exchange medium, even if the leak occurs in the second sealing cavity 10, the heat exchange medium can still enter the first sealing cavity 7 through the conduit 9 and be captured by the sensor 6 in time. This ensures that the leak can be detected quickly regardless of whether the leak point is located in the distribution manifold assembly 22 or the heat exchange tube assembly 23, avoiding the problem of missed detection that may occur due to the sensor 6 being installed in only a single chamber, and improving the timeliness and accuracy of leak detection.

[0079] In addition, the sealing plate 8 is connected to the main housing 1 as an independent component, and its structure is relatively simple. The setting of the conduit 9 does not require major modifications to the original sealing component 5. Therefore, while improving the protection performance, it can still maintain good ease of disassembly and assembly, ensuring that the equipment can effectively prevent safety hazards during long-term use, and is also convenient for later maintenance and repair.

[0080] Understandably, leaks of the heat exchange medium are generally more severe at pipe weld joints and where the pipe curvature radius is large. Therefore, if... Figure 3 and Figure 7 As shown, in this embodiment, the distribution manifold assembly 22 includes a plurality of first pipes 221, each of which may have a first arc-shaped pipe section 2211. This allows for sealing of any leaks in the heat exchange medium at that location.

[0081] Furthermore, at least one bend 2212 may also be formed on the first pipe 221. It is understood that the heat exchange medium is more likely to leak at the bend, therefore, this area is also sealed by the sealing assembly 5.

[0082] For the heat exchanger tube assembly 23, it may include a plurality of second pipes 231; the second pipes 231 have a second arc-shaped pipe section 2311. Therefore, a sealing plate 8 is used to seal at this location.

[0083] Please continue to combine Figure 8 , Figure 8 for Figure 5A three-dimensional structural diagram from another perspective. Regarding the structure of the main shell 1, it includes a top plate assembly 12, a bottom plate assembly 13, a surrounding plate 14, a first side plate 16, and a second side plate 17. The top plate assembly 12 and the bottom plate assembly 13 are positioned opposite each other, and the first side plate 16 and the second side plate 17 are positioned opposite each other. The surrounding plate 14, the first side plate 16, and the second side plate 17 are all connected between the top plate assembly 12 and the bottom plate assembly 13. The top plate assembly 12, the bottom plate assembly 13, the surrounding plate 14, the first side plate 16, and the second side plate 17 enclose and form a heat exchange chamber 11. An air inlet 141 is formed on the surrounding plate 14. The top plate assembly 12, the bottom plate assembly 13, the first side plate 16, and the second side plate 17 enclose and form... The air outlet 15 and the air inlet 141 are both connected to the heat exchange chamber 11. A first through hole 161 for the distribution manifold assembly 22 to pass through is formed on the first side plate 16, and a second through hole 171 for the heat exchange tube assembly 23 to pass through is formed on the second side plate 17. A first sealing member 51 is connected to the first side plate 16, and a second sealing member 52 and a third sealing member 53 are both connected to the surrounding plate 14. The sealing assembly 5, the top plate assembly 12, the bottom plate assembly 13, the surrounding plate 14 and the first side plate 16 together form a first sealing chamber 7, and the sealing plate 8, the top plate assembly 12, the bottom plate assembly 13 and the second side plate 17 together form a second sealing chamber 10.

[0084] The top plate assembly 12, bottom plate assembly 13, surrounding plate 14, first side plate 16 and second side plate 17 enclose and form a heat exchange cavity 11. The air inlet 141 on the surrounding plate 14 and the air outlet 15 formed by the top plate assembly 12, bottom plate assembly 13, first side plate 16 and second side plate 17 are both connected to the heat exchange cavity 11. This provides the necessary airflow channel for the heat exchange process of the heat exchanger 2, ensuring that the indoor unit 100 can normally realize the air conditioning function.

[0085] In some specific embodiments, the top plate assembly 12 includes a first sub-plate 121, a second sub-plate 122, a first foam 123, and a second foam 124 stacked together. The first sub-plate 121 is located on the outermost side. The bottom plate assembly 13 includes a heat exchange chamber bottom plate 131, an electrical control bottom plate 132, a first extension plate 133, and a second extension plate 134. The electrical control bottom plate 132 is connected to the side of the heat exchange chamber bottom plate 131 near the air inlet 141. The heat exchange chamber bottom plate 131 forms the bottom wall of the heat exchange chamber 11. The first extension plate 133 and the second extension plate 134 are respectively connected to the two ends of the heat exchange chamber bottom plate 131.

[0086] In order to achieve the internal electrical performance of the indoor unit 100, the indoor unit 100 provided in this embodiment also includes an electrical control box 20. In order to improve the structural compactness of the indoor unit 100, a mounting groove 1321 can be formed at the bottom of the electrical control base plate 132, and the electrical control box 20 is installed in the mounting groove 1321.

[0087] The first sealing cavity 7 is formed by sealing assembly 5, second sub-plate 122, first extension plate 133, first side plate 16 and surrounding plate 14, and the second sealing cavity 10 is formed by sealing plate 8, second sub-plate 122, second extension plate 134 and second side plate 17.

[0088] Please continue to combine Figure 9 and Figure 10 , Figure 9 for Figure 2 A schematic diagram of the three-dimensional structure from another perspective. Figure 10 for Figure 9 A magnified view of the partial structure at point C. In some optional embodiments, the first sealing cavity 7 includes a first sub-cavity 71 and a second sub-cavity 72, with the first sub-cavity 71 communicating with the second sub-cavity 72. The first sub-cavity 71 is enclosed by a first sealing element 51, a second sealing element 52, a second sub-plate 122, a first extension plate 133, a surrounding plate 14, and a first side plate 16. The second sub-cavity 72 is enclosed by a third sealing element 53 and a surrounding plate 14. The distribution manifold assembly 22 extends from the heat exchange cavity 11 to the first sub-cavity 71, and both the input pipe 3 and the output pipe 4 extend from the first sub-cavity 71 to the second sub-cavity 72. The second sub-cavity 72 has openings 721 at both ends, one opening 721 communicating with the first sub-cavity 71 and the other opening 721 communicating with the external space of the main housing 1.

[0089] Thus, since the second sub-cavity 72 is only enclosed by the third seal 53 and the surrounding plate 14, it is easier to weld the input pipe 3 to the distribution manifold assembly 22 and the output pipe 4 to the distribution manifold assembly 22.

[0090] Please continue to combine Figure 11 and Figure 12 , Figure 11 This is a three-dimensional structural diagram of the third seal in the indoor unit provided in an embodiment of this application. Figure 12 for Figure 11 A three-dimensional structural schematic diagram from another perspective. As shown in the figure, in some specific embodiments, the third sealing element 53 includes a box body 531 and a cover plate 532. The surrounding plate 14 and the second sealing element 52 are both connected to the box body 531. The first end of the cover plate 532 is rotatably connected to the box body 531, and the other end of the cover plate 532 can be engaged with the box body 531. Among them, one opening 721 is formed by the box body 531, the cover plate 532 and the surrounding plate 14, and the other opening 721 is formed by the box body 531 and the cover plate 532.

[0091] In other words, in the third sealing element 53, the cover plate 532 is rotatably connected to the box body 531, and the other end of the cover plate 532 can be separated from the box body 531. Thus, when welding the input pipe 3 and the output pipe 4, the other end of the cover plate 532 can be separated from the box body 531, and the cover plate 532 can be rotated to form an operating opening on the box body 531. The input pipe 3 and the output pipe 4 can then be welded through this operating opening. This ensures sealing while improving the manufacturing efficiency of the indoor unit 100 provided in this embodiment.

[0092] In some specific embodiments, the box body 531 includes a main body 5311, an extension 5312, and a connecting flange 5313. An opening 721 is formed at the end of the main body 5311 that is away from the second seal 52, and the cover plate 532 is rotatably connected to the main body 5311. The extension 5312 is connected to the end of the main body 5311 that is close to the second seal 52. The extension 5312, the main body 5311, the cover plate 532, and the surrounding plate 14 enclose each other to form another opening 721, and the extension 5312 is connected to the surrounding plate 14. The connecting flange 5313 is connected to a portion of the edge of the main body 5311, and the cover plate 532 can be engaged with the connecting flange 5313. The second seal 52 is engaged with the connecting flange 5313.

[0093] The cover plate 532 and the main body 5311 are rotatably connected. Compared with the fixed connection, when the staff needs to inspect the input pipe 3 and output pipe 4 inside the second sub-cavity 72, they do not need to completely disassemble the cover plate 532. They can simply rotate it open, which greatly simplifies the operation steps. At the same time, the cover plate 532 can be engaged with the connecting flange 5313, and the second seal 52 is also engaged with the connecting flange 5313. This engagement structure does not rely on additional fasteners such as screws, which reduces the number of parts and makes the fixing and opening of the cover plate 532 and the assembly and separation of the second seal 52 and the box body 531 more efficient.

[0094] More specifically, the connecting flange 5313 includes a first sub-flange 5314 and a second sub-flange 5315 that are perpendicular to each other and connected together. The first sub-flange 5314 is positioned facing the second seal 52 and is engaged with the second seal 52. The second sub-flange 5315 has a first snap-fit ​​hole 5316, and the cover plate 532 is provided with a first buckle 533, which can be engaged with the first snap-fit ​​hole 5316.

[0095] Thus, during installation, simply align the second sealing element 52 with the first sub-flanged flange 5314 and press it to engage, then align the first buckle 533 of the cover plate 532 with the first snap-fit ​​hole 5316 of the second sub-flanged flange 5315 and engage, without the need for tools; during disassembly, simply apply a reverse force to the first buckle 533 of the cover plate 532 to disengage it from the first snap-fit ​​hole 5316, and then rotate the cover plate 532 to open it, allowing inspection of the input pipe 3 and output pipe 4 inside the second sub-cavity 72. This improves connection stability while maintaining high efficiency in disassembly and assembly, further enhancing the maintainability of the equipment.

[0096] In order to improve the connection reliability between the box body 531 and the cover plate 532, two first buckles 533 can be set. The two first buckles 533 are respectively set to correspond to the two side walls of the first snap hole 5316, so as to engage with the second sub-flanged edge 5315.

[0097] Furthermore, in order to facilitate the engagement between the first buckle 533 and the first snap-fit ​​hole 5316, the cover plate 532 includes a main board portion 5321 and a recessed plate 5322 connected together. The main board portion 5321 is rotatably connected to the main body portion 5311. When the cover plate 532 is connected to the box body 531, the main board portion 5321 abuts against the second sub-flanged edge 5315, the recessed plate 5322 is recessed in the direction away from the second sub-flanged edge 5315, and the first buckle 533 is connected to the side of the recessed plate 5322 facing the second sub-flanged edge 5315.

[0098] When the cover plate 532 needs to be removed, the operator can more easily access the operating end of the first buckle 533 through the recessed area of ​​the recessed plate 5322 without worrying about interference between the hand or tool and the second sub-flanged edge 5315. At the same time, since there is a certain gap between the recessed plate 5322 and the second sub-flanged edge 5315, when the first buckle 533 is pressed to engage with the first snap-fit ​​hole 5316, it can effectively prevent the first buckle 533 from not being able to fully engage due to space constraints, ensuring the reliability of the snap-fit ​​engagement. This simplifies the disassembly and assembly steps and reduces the probability of operational errors.

[0099] In a specific embodiment of this invention, in order to achieve a rotatable connection between the cover plate 532 and the main body 5311, the main body 5311 is provided with two spaced-apart fixed seats 5317, and the fixed seats 5317 are provided with rotating grooves 5318. The main body 5321 is provided with two spaced-apart rotating shafts 5323 on its side. The two rotating shafts 5323 are provided in a one-to-one correspondence with the two fixed seats 5317, and the rotating shafts 5323 are rotatably engaged with the rotating grooves 5318 on the corresponding fixed seats 5317.

[0100] In order to limit the position of the rotating shaft 5323 along its axial direction, a stop plate 5324 with a diameter larger than that of the rotating shaft 5323 is connected to the end of the rotating shaft 5323. The stop plate 5324 abuts against the fixed seat 5317. In this way, by setting the stop plate 5324, the rotating shaft 5323 can be restricted within the corresponding rotating groove 5318.

[0101] Please continue to combine Figure 5 , Figures 11 to 14 , Figure 13 for Figure 5 A magnified view of the local structure at point D. Figure 14 This is a schematic diagram of the structure of the enclosure panel in the indoor unit provided in an embodiment of this application. In some specific embodiments, the extension portion 5312 includes a first extension sub-portion 5319 and a second extension sub-portion 5320 connected together and perpendicular to each other. The second extension sub-portion 5320 is connected between the first extension sub-portion 5319 and the first sub-flanged flange 5314, and when the cover plate 532 is connected to the box body 531, the second extension sub-portion 5320 is disposed opposite to the main board portion 5321.

[0102] Furthermore, the enclosure 14 includes an enclosure body 142, an air inlet 141 is opened on the enclosure body 142, one end of the enclosure body 142 is connected to a limiting flange 143 perpendicular to the enclosure body 142, the limiting flange 143 abuts against the inner side of the first extension sub-part 5319, the bottom end of the limiting flange 143 is connected to a first connecting piece 144, the limiting flange 143, the first connecting piece 144, the main body 5311 and the main body 5321 enclose to form an opening 721.

[0103] In some embodiments, in order to achieve the connection between the third seal 53 and the main housing 1, the first connecting piece 144 is provided with a first connecting hole 1441, and the second extension part 5320 is provided with a second connecting hole 5330. Screws and other threaded fasteners can pass through the first connecting hole 1441 and the second connecting hole 5330 in sequence to connect the second extension part 5320 and the first connecting piece 144 together, thereby achieving the connection between the third seal 53 and the main housing 1.

[0104] It is understandable that when the first connecting piece 144 has a first connecting hole 1441 and the second extension sub-part 5320 has a second connecting hole 5330, it will inevitably affect the structural strength of the first connecting piece 144 and the second extension sub-part 5320. Therefore, in order to improve the structural strength of the first connecting piece 144 and the second extension sub-part 5320, in some specific embodiments, a first reinforcing protrusion 145 is provided on the side of the first connecting piece 144 opposite to the second extension sub-part 5320, and the first connecting hole 1441 penetrates the first reinforcing protrusion 145 and the first connecting piece 144; a second reinforcing protrusion 5331 is provided on the side of the second extension sub-part 5320 opposite to the first connecting piece 144, and the second connecting hole 5330 penetrates the second extension sub-part 5320 and the second reinforcing protrusion 5331. Thus, by providing the first reinforcing protrusion 145 and the second reinforcing protrusion 5331, the structural strength of the first connecting piece 144 and the second extension sub-part 5320 can be improved, thereby improving the structural strength of the main housing 1 and the third seal 53.

[0105] like Figure 10 As shown, in order to improve the structural strength of the box body 531 and thus the structural strength of the third sealing member 53, in this embodiment, a plurality of spaced-apart first reinforcing ribs 5332 are provided on the inner wall of the body 5311. The shape of the first reinforcing ribs 5332 is adapted to the shape of the inner wall of the body 5311. In a specific embodiment, the first reinforcing ribs 5332 are U-shaped. The first reinforcing ribs 5332 can completely fit against the inner wall of the body 5311, maximizing the contact area to improve support efficiency.

[0106] Please continue to combine Figures 15 to 17 , Figure 15 This is a three-dimensional structural diagram of the second seal in the indoor unit provided in an embodiment of this application. Figure 16 for Figure 15 A structural diagram from another perspective. Figure 17 for Figure 15 A structural schematic diagram from another perspective. As shown in the figure, in some embodiments, the second sealing member 52 includes a first sealing part 521, a second sealing part 522, and a connecting part 523 connected together; the end of the first sealing part 521 away from the second sealing part 522 abuts against the second sub-plate 122, the end of the second sealing part 522 away from the first sealing part 521 abuts against the first side plate 16, and the second sealing part 522 is connected to the surrounding plate 14; one end of the first sealing part 521 is engaged with the first sealing member 51, and the connecting part 523 is connected to the other end of the first sealing part 521 and engaged with the first sub-flanged flange 5314.

[0107] The first sealing portion 521 includes a sealing main portion 5211 and a sealing extension portion 5212. The sealing extension portion 5212 is connected to the side of the sealing main portion 5211 near the second sub-plate 122, and extends towards the first side plate 16 in the direction from the sealing main portion 5211 to the second sub-plate 122. The sealing main portion 5211 is engaged with the first sealing member 51.

[0108] Please continue to combine Figure 14 , Figure 15 , Figures 17 to 19 , Figure 18 for Figure 2 A schematic diagram of the third partial structure shown. Figure 19 for Figure 18 A magnified view of the partial structure at point E. The bottom end of the main body 142 of the enclosure is also connected to a second connecting piece 146, which is parallel to the first connecting piece 144. The second connecting piece 146 has a third connecting hole 1461, and the edge of the second sealing part 522 has a fourth connecting hole 5221. The second connecting piece 146 abuts against the end of the second sealing part 522 near the top plate assembly 12. Screws and other threaded fasteners can pass through the third connecting hole 1461 and the fourth connecting hole 5221 in sequence to connect the second sealing part 52 to the enclosure 14.

[0109] Similarly, in order to improve the structural strength of the second connecting piece 146 and thus the structural strength of the surrounding plate 14, a second reinforcing protrusion 147 can be provided at the top of the second connecting piece 146, and a third connecting hole 1461 passes through the second reinforcing protrusion 147 and the second connecting piece 146.

[0110] Please continue to combine Figure 20 , Figure 20 This is a three-dimensional structural diagram of the sealing assembly in the indoor unit provided in an embodiment of this application. To achieve the engaging connection between the second seal 52 and the third seal 53, in some specific embodiments, a second buckle 5333 is provided on the first sub-flanged flange 5314, a second locking hole 5231 is provided on the connecting portion 523, a locking protrusion 5232 is provided on one side of the second locking hole 5231, and the second buckle 5333 has a locking groove 5334. The second buckle 5333 passes through the second locking hole 5231 to engage the locking protrusion 5232 and the locking groove 5334. In this way, the engaging connection between the second seal 52 and the third seal 53 can be achieved, enabling quick disassembly and quick assembly between the second seal 52 and the third seal 53.

[0111] In some specific embodiments, to improve the connection reliability between the second seal 52 and the third seal 53, multiple second snap-fits 5333, second snap-fit ​​holes 5231, and snap-fit ​​protrusions 5232 can be spaced apart along the height direction of the indoor unit 100, and the multiple second snap-fits 5333, multiple second snap-fit ​​holes 5231, and multiple snap-fit ​​protrusions 5232 are arranged in a one-to-one correspondence. This improves the connection reliability between the second seal 52 and the third seal 53, thereby enhancing the structural stability of the sealing assembly 5 and ultimately improving the sealing performance of the sealing assembly 5.

[0112] like Figure 20 As shown, the second latch 5333, the second latch hole 5231, and the latching protrusion 5232 can all be configured in pairs along the height direction of the indoor unit 100. Here, there is no specific limitation on the number of the second latch 5333, the second latch hole 5231, and the latching protrusion 5232.

[0113] It should be noted that the height direction of the aforementioned indoor unit 100 is related to... Figures 1 to 17 , Figure 20 The ZZ axes are aligned.

[0114] In some embodiments, in order to improve the structural strength of the second seal 52, a plurality of first reinforcing ribs 524 and a plurality of second reinforcing ribs 525 are provided on the inner side of the first sealing part 521; the plurality of first reinforcing ribs 524 are arranged at intervals in the horizontal direction, the plurality of second reinforcing ribs 525 are arranged at intervals in the vertical direction, and the first reinforcing ribs 524 and the second reinforcing ribs 525 intersect.

[0115] The horizontally arranged first reinforcing ribs 524 and the vertically arranged second reinforcing ribs 525 intersect to form a grid-like support system, which can evenly distribute the external force on the first sealing part 521. Whether it is the impact during equipment transportation or the stress generated by vibration during operation, the grid-like reinforcing ribs can transmit the force to multiple directions, preventing the first sealing part 521 from deforming due to excessive local stress. For example, when the first sealing part 521 abuts against the top plate assembly 12 or engages with the first sealing element 51, the reinforcing ribs can enhance the structural rigidity of the contact area, prevent the first sealing part 521 from being dented due to compression, and ensure that it can maintain a stable shape during long-term use, providing a basic guarantee for sealing fit.

[0116] In a specific embodiment of this invention, the first reinforcing rib 524 includes a first rib segment 5241 and a second rib segment 5242 connected together. The first rib segment 5241 is disposed on the sealing main portion 5211 and extends in a vertical direction. The second rib segment 5242 is disposed on the sealing extension portion 5212 and extends in an inclined direction along the sealing extension portion 5212. The second reinforcing rib 525 is disposed on the sealing main portion 5211 and extends in a horizontal direction, and the second reinforcing rib 525 intersects with the first rib segment 5241.

[0117] Please continue to combine Figures 21 to 23 , Figure 21 for Figure 2 A schematic diagram of the fourth partial structure shown. Figure 22 for Figure 21 A cross-sectional view along the FF direction. Figure 23 for Figure 22 A magnified schematic diagram of the partial structure at point G. It is understood that condensation may occur on the surface of the heat exchanger 2 during operation. Therefore, to drain this condensation, the indoor unit 100 provided in this embodiment also includes a water collection tray 30. The water collection tray 30 is connected to the heat exchange chamber bottom plate 131 and the first extension plate 133 of the base plate assembly 13. The bottom wall 33 of the water collection tray 30 is located in a plane; the projection area of ​​the first sealing member 51 on the plane falls within the bottom wall 33, and a portion of the projection area of ​​the second sealing member 52 on the plane falls within the bottom wall 33.

[0118] It is understandable that condensate generated on the surfaces of the input and output pipes in related technologies can easily flow freely along the pipe walls or sheet metal surfaces, potentially dripping into the user's space and affecting usability. Therefore, in order to avoid this phenomenon to some extent...

[0119] In some optional embodiments, a water-guiding structure 526 is provided on the second sealing part 522 to guide condensate to the drip tray 30. It should be noted that since the sealing assembly 5 is made of plastic, if condensate from the surfaces of the distribution manifold assembly 22, inlet pipe 3, and outlet pipe 4 flows onto the sealing assembly 5, it may corrode the surface of the sealing assembly 5, thereby compromising its structural integrity and potentially affecting its sealing performance. Therefore, the water-guiding structure 526 guides condensate from the surface of the sealing assembly 5 into the drip tray 30, ensuring that the sealing assembly 5 has good sealing performance.

[0120] The water receiving tray 30 includes a tray body 31, a third foam 32, and a drain pipe 34. The bottom wall 33 of the tray is formed in the tray body 31. The drain pipe 34 connects the tray body 31 and the third foam 32 and communicates with the inner cavity of the water receiving tray 30. A portion of the third foam 32 is sandwiched between the tray body 31 and the heat exchange chamber bottom plate 131, and another portion of the third foam 32 is sandwiched between the tray body 31 and the first extension plate 133.

[0121] In order to allow more condensate on the sealing assembly 5 to flow into the drip tray 30, in some optional embodiments, the second sealing portion 522 extends at an angle towards the bottom wall 33 of the tray, moving from away from the first seal 51 to closer to the first seal 51. Thus, since condensate flows downwards due to gravity, and the second sealing portion 522 is angled towards the bottom wall 33, the condensate on its surface can flow naturally towards the drip tray 30 along the inclined surface without additional guidance. Especially in the area near the first seal 51, the condensate can more precisely fall into the coverage area of ​​the bottom wall 33.

[0122] Please continue to combine Figure 24 and Figure 25 , Figure 24 for Figure 21 A three-dimensional structural diagram of the structure shown. Figure 25 for Figure 24 A magnified view of the partial structure at point H. In some specific embodiments, the water guiding structure 526 includes a water guiding groove 5261 and water guiding ribs 5262 located on both sides of the water guiding groove 5261. The water guiding groove 5261 extends obliquely from away from the first seal 51 to near the first seal 51, and the oblique angle of the water guiding groove 5261 is consistent with the oblique angle of the second sealing part 522. The water guiding rib 5262 has a first end 5263 located near the water guiding groove 5261 and a second end 5264 located away from the water guiding groove 5261. The first end 5263 is located closer to the first seal 51 than the second end 5264.

[0123] Among them, the water guide ribs 5262 are located on both sides of the water guide groove 5261, which can directly prevent the condensate in the water guide groove 5261 from overflowing to both sides due to shaking, impact and other factors, ensuring that the condensate always flows in the groove; moreover, the first end 5263 is set closer to the first seal 51, which can form a "closing" protection with the inclined end of the water guide groove 5261. In the area of ​​the water guide groove 5261 near the first seal 51, the first ends 5263 of the water guide ribs 5262 on both sides are close to each other, reducing the opening range of the condensate outflow, and further guiding the condensate to fall into the coverage area of ​​the water receiving tray 30, avoiding the diffusion of condensate due to the excessive width of the groove end.

[0124] To improve the guiding effect of the water guide channel 5261 on condensate, in some specific embodiments, the angle between the extension direction of the water guide channel 5261 and the horizontal direction is greater than or equal to 2 degrees and less than or equal to 10 degrees. When the angle is greater than or equal to 2 degrees, the water flow velocity is sufficient to carry away most impurities and maintain the cleanliness inside the water guide channel 5261; while the limitation of the angle being less than or equal to 10 degrees avoids excessive water flow due to an excessively large inclination angle, which could cause splashing at the turning point or outlet.

[0125] In some specific embodiments, the water guide rib 5262 includes a first sub-rib 5265 and a second sub-rib 5266. The first sub-rib 5265 is located between the first sealing part 521 and the water guide groove 5261, and the second sub-rib 5266 is located between the first side plate 16 and the water guide groove 5261. The first sub-rib 5265 is connected to the first reinforcing rib 524.

[0126] In other words, the first sub-rib 5265 can prevent condensate in the water guide groove 5261 from overflowing towards the first sealing part 521. Specifically, the first sealing part 521 is engaged with the first sealing member 51. If condensate seeps into the engagement gap between the two, it may affect the overall sealing performance of the sealing assembly 5. The presence of the first sub-rib 5265 can form the first barrier, ensuring that the condensate is always confined within the water guide groove 5261. On the other hand, the second sub-rib 5266 can prevent condensate from penetrating to the contact surface between the first side plate 16 and the second sealing part 522, avoiding condensate from seeping into the interior of the main housing 1 along the contact gap. In particular, it can reduce the erosion of the area around the first through hole 161 on the first side plate 16, ensuring the sealing reliability of the distribution manifold assembly 22 penetration point, and further preventing condensate overflow to a certain extent.

[0127] In a specific implementation of this embodiment, the first sub-rib 5265 and the second sub-rib 5266 can each be configured as multiple along the width direction of the indoor unit 100, and the multiple first sub-ribs 5265 are evenly spaced and the multiple second sub-ribs 5266 are evenly spaced.

[0128] In this way, compared to a single sub-rib that can only cover a local area, multiple sub-ribs can fully cover the two sides of the water guide groove 5261 along the width of the indoor unit 100. No matter where the condensate tends to overflow in the water guide groove 5261 (such as local water accumulation caused by equipment tilting or vibration), it can be blocked in time by the corresponding sub-ribs to prevent the condensate from breaking through the protection boundary.

[0129] It should be noted that the width of the aforementioned indoor unit 100 is in the same direction as... Figures 1 to 25 The YY axes are aligned.

[0130] To further prevent condensate from overflowing, in a specific embodiment of this invention, a water-blocking rib 527 is also provided on the second sealing part 522. The water-blocking rib 527 is located between the second sub-rib 5266 and the first side plate 16, and the water-blocking rib 527 is connected to the second sub-rib 5266. The water-blocking rib 527 extends obliquely from away from the first sealing member 51 to close to the first sealing member 51, and the oblique angle of the water-blocking rib 527 is consistent with the oblique angle of the water guide groove 5261.

[0131] In this way, even if condensate breaks through the second sub-rib 5266, it will be blocked again by the water-blocking rib 527, and will not be able to contact the first side plate 16 and the contact surface between the second sealing part 522 and the first side plate 16. This completely avoids the risk of condensate seeping into the interior of the main housing 1 along the contact gap. In particular, it can protect the sealing environment around the first through hole 161 on the first side plate 16, and ensure that the sealing performance of the distribution manifold assembly 22 is not corroded by condensate.

[0132] Please continue to combine Figures 26 to 29 , Figure 26 This is a three-dimensional structural diagram of the first seal in the indoor unit provided in an embodiment of this application, viewed from a first perspective. Figure 27 This is a three-dimensional structural diagram of the first seal in the indoor unit provided in an embodiment of this application, viewed from a second perspective. Figure 28 This is a three-dimensional structural diagram of the first seal in the indoor unit provided in an embodiment of this application, viewed from a third perspective. Figure 29 This is a three-dimensional structural diagram of the first sealing element in the indoor unit provided in the embodiments of this application from a fourth perspective. As shown in the figure, in some specific embodiments, the first sealing element 51 includes a sealing cover plate 511 and a water receiving plate 512. The opposite ends of the sealing cover plate 511 abut against the top plate assembly 12 and the bottom plate assembly 13, respectively. The sealing cover plate 511 is engaged with the first sealing part 521 and connected to the first side plate 16. The water receiving plate 512 is connected to the sealing cover plate 511 and is located outside the first sub-cavity 71. The condensate flowing out of the water guide groove 5261 flows through the water receiving plate 512 into the water receiving tray 30.

[0133] The water receiving plate 512 is located outside the first sub-cavity 71 and can receive the water outlet of the water guide trough 5261. It maintains a stable angle by relying on the connection with the sealing cover plate 511, ensuring that the condensate flows smoothly along the surface of the water receiving plate 512 into the water receiving tray 30, thus preventing the condensate from dripping into other parts inside the main housing 1 during the falling process.

[0134] In a specific embodiment of this invention, the sealing cover plate 511 includes a connecting cover plate 5111, a first abutting cover plate 5112, and a second abutting cover plate 5113. The sealing main part 5211 and the first side plate 16 are both connected to the connecting cover plate 5111. The water receiving plate 512 is connected to the outside of the connecting cover plate 5111. The first abutting cover plate 5112 is connected to the top of the connecting cover plate 5111, and the second abutting cover plate 5113 is connected to the bottom of the connecting cover plate 5111. The first abutting cover plate 5112 abuts against the second sub-plate 122, and the second abutting cover plate 5113 abuts against the first extension plate 133.

[0135] In some alternative embodiments, to enhance the structural strength of the first seal 51, a reinforcing plate 513 is also connected between the water receiving plate 512 and the connecting cover plate 5111. Thus, the structural strength of the first seal 51 is enhanced by the addition of the reinforcing plate 513.

[0136] Please continue to combine Figure 30 , Figure 30 This is a three-dimensional structural diagram of the first side panel in the indoor unit provided in this application embodiment. In order to realize the connection between the sealing cover plate 511 and the first side panel 16, the sealing cover plate 511 also includes an extension connecting plate 5114 disposed on both sides of the connecting cover plate 5111. The extension connecting plate 5114 is provided with a first fixing hole 5115, and the first side panel 16 is provided with a second fixing hole 162. Screws and other threaded fasteners can pass through the first fixing hole 5115 and the second fixing hole 162 in sequence to connect the first sealing member 51 to the first side panel 16 together.

[0137] It should be noted that the connection method between the sealing plate 8 and the second side plate 17 can also refer to the connection method between the first sealing member 51 and the first side plate 16. Further details will not be provided here.

[0138] Of course, in order to improve the connection efficiency between the first seal 51 and the first side plate 16, a positioning post 5116 can be provided on the extension connecting plate 5114, and a positioning hole 163 can be provided on the first side plate 16. The positioning between the first seal 51 and the first side plate 16 can be achieved through the cooperation of the positioning post 5116 and the positioning hole 163, so as to improve the assembly efficiency between the sealing assembly 5 and the main housing 1.

[0139] In order to enable the conduit 9 to connect the first sealing cavity 7 and the second sealing cavity 10, in this embodiment, the first side plate 16 is provided with a first through hole 164 for the conduit 9 to pass through, and the second side plate 17 is provided with a second through hole 172 for the conduit 9 to pass through.

[0140] Please continue to combine Figures 31 to 33 , Figure 31 This is a schematic diagram of a partial structure of the sealing assembly in the indoor unit provided in an embodiment of this application. Figure 32 for Figure 31 Sectional view along direction II, Figure 33 for Figure 32 A magnified view of the partial structure at point J. To achieve the engaging connection between the first seal 51 and the second seal 52, in some specific embodiments, a third snap 528 is provided on one side of the first sealing part 521; a notch 5117 is formed on the side of the sealing cover plate 511 near the second seal 52, and a snap protrusion 5118 is provided on the sealing cover plate 511, which is opposite to the notch 5117; wherein, the third snap 528 engages with the snap protrusion 5118 via the notch 5117.

[0141] During assembly, the third snap fastener 528 can be quickly positioned along the contour of the notch 5117 to the snap protrusion 5118, avoiding assembly difficulties caused by positional deviation and ensuring that the first sealing part 521 and the sealing cover plate 511 can be quickly aligned.

[0142] Specifically, the third buckle 528 has a slot 5281 that engages with the buckle protrusion 5118.

[0143] In some optional embodiments, to facilitate the engagement of the third snap-fit ​​528 with the snap-fit ​​protrusion 5118, the sealing main part 5211 is also provided with a deformation notch 5119 opposite to the third snap-fit ​​528. Thus, by providing the deformation notch 5119, a quick engagement connection between the third snap-fit ​​528 and the snap-fit ​​protrusion 5118 can be achieved.

[0144] Understandably, in order to achieve a reliable connection between the first seal 51 and the second seal 52, in some embodiments, multiple third snap-fits 528, notches 5117, and protrusions 5118 are spaced apart along the height direction of the indoor unit 100, and the multiple third snap-fits 528, multiple notches 5117, and multiple protrusions 5118 are arranged in a one-to-one correspondence. This improves the reliability of the connection between the first seal 51 and the second seal 52.

[0145] As shown in the figure, in a specific implementation of this embodiment, the third latch 528, notch 5117, and protrusion 5118 are all spaced three times along the height direction of the indoor unit 100; that is, the deformation notch 5119 is spaced three times along the height direction of the indoor unit 100. Of course, in other implementations, the third latch 528, deformation notch 5119, notch 5117, and protrusion 5118 can also be set to other numbers. Here, there is no specific limitation on the number of the third latch 528, deformation notch 5119, notch 5117, and protrusion 5118.

[0146] It is understandable that if the drip tray 30 shifts laterally, the condensate flowing from the drip plate 512 may drip onto the outside of the drip tray 30, potentially causing water accumulation inside the main housing 1. To mitigate this risk to some extent, in some optional embodiments, a stop protrusion 5120 is provided on the side of the connecting cover 5111 of the sealing cover 511 that faces away from the first side plate 16. The stop protrusion 5120 stops against the side wall of the drip tray 30. This ensures that the opening of the drip tray 30 is always aligned with the outlet end of the drip plate 512, allowing the condensate to flow directly into the drip tray 30 after exiting the drip plate 512, thus preventing leakage.

[0147] To enhance the structural strength of the first sealing element 51, in some specific embodiments, a second reinforcing rib 5130 is provided on the inner side of the connecting cover plate 5111, and a third reinforcing rib 5140 is provided on the outer side of the sealing cover plate 511. The arrangement of the second reinforcing rib 5130 can refer to the arrangement of the first reinforcing rib 524 and the second reinforcing rib 525 in the second sealing element 52. Further details are omitted here.

[0148] The third reinforcing rib 5140 can extend horizontally and be spaced out in multiples along the height of the indoor unit 100. The arrangement of the third reinforcing rib 5140 is not limited here.

[0149] Please continue to combine Figure 34 , Figure 34 This is a three-dimensional structural diagram of the indoor unit provided in this embodiment. The indoor unit 100 provided in this embodiment also includes an outer casing 40 and a fan 50. The fan 50, the main casing 1 and the sealing assembly 5 are all disposed inside the outer casing 40. The fan 50 is disposed at the air inlet 141 and is located outside the heat exchange chamber 11.

[0150] The outer casing 40 has an opening at the bottom to form a return air inlet, and a grille can be installed at the bottom opening. The outer casing 40 also has an external air inlet 401 that communicates with the air inlet 141.

[0151] In a specific implementation of this embodiment, two fans 50 can be provided, and of course, two air inlets 141 can also be provided at intervals.

[0152] This embodiment also provides a heating, ventilation, and air conditioning (HVAC) device, including an outdoor unit and the aforementioned indoor unit 100. The structure of the indoor unit 100 has been described in detail in the above embodiments and will not be repeated here.

[0153] The internal structure of the outdoor unit will not be described in detail here.

[0154] The HVAC equipment provided in this embodiment, by adopting the aforementioned indoor unit 100, has good maintainability and a long service life, and also performs well in use.

[0155] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An indoor unit, characterized in that, include: The main shell has a heat exchange cavity. A heat exchanger includes a heat exchange body and a distribution manifold assembly, wherein the heat exchange body is disposed in the heat exchange chamber and the distribution manifold assembly is connected to a first end of the heat exchange body; Both the input and output tubes are connected to the distribution manifold assembly; A sealing assembly is connected to the main housing, and the sealing assembly and the main housing enclose a first sealing cavity. The distribution manifold assembly extends from the heat exchange cavity to the first sealing cavity, and the input pipe and the output pipe are both located within the first sealing cavity. as well as A water receiving tray, which is connected to the main housing; The sealing assembly is provided with a water guiding structure, which is located inside the first sealing cavity and is used to guide condensate to the water receiving tray.

2. The indoor unit according to claim 1, characterized in that, The water guiding structure includes a water guiding channel; The water guide channel extends obliquely from away from the water receiving tray to close to the water receiving tray, and the end of the water guide channel closer to the water receiving tray is closer to the bottom wall of the water receiving tray.

3. The indoor unit according to claim 2, characterized in that, The water guide channel extends obliquely along the width direction of the indoor unit; The angle between the extension direction of the water guide channel and the horizontal direction is greater than or equal to 2 degrees and less than or equal to 10 degrees.

4. The indoor unit according to claim 3, characterized in that, The water guiding structure also includes water guiding ribs located on both sides of the water guiding channel; The water guide rib has a first end located near the water guide channel and a second end located away from the water guide channel, wherein the first end is located closer to the water receiving tray than the second end.

5. The indoor unit according to claim 4, characterized in that, The water guide ribs located on the same side of the water guide channel are arranged in multiple ways along the width direction of the indoor unit, and the multiple water guide ribs are evenly spaced.

6. The indoor unit according to claim 4, characterized in that, The sealing assembly is also provided with a water-blocking rib, which is located between the water guiding structure and the main housing. The water guiding rib located between the water guiding groove and the water-blocking rib is connected to the water guiding rib and the water-blocking rib. The water-blocking rib extends obliquely from away from the water receiving tray to close to the water receiving tray, and the oblique angle of the water-blocking rib is consistent with the oblique angle of the water guide channel.

7. The indoor unit according to claim 2, characterized in that, The sealing assembly is also provided with a water receiving plate, which is located outside the first sealing cavity; The condensate flowing out of the water guide channel flows through the water receiving plate into the water receiving tray.

8. The indoor unit according to any one of claims 4 to 6, characterized in that, The first sealing cavity includes a first sub-cavity and a second sub-cavity, and the first sub-cavity is in communication with the second sub-cavity; The sealing assembly includes a first seal, a second seal, and a third seal, wherein the second seal is engaged between the first seal and the third seal; The first sub-cavity is formed by the first sealing element, the second sealing element and the main housing, and the second sub-cavity is formed by the third sealing element and the main housing; The water-guiding structure is disposed on the second sealing element.

9. The indoor unit according to claim 8, characterized in that, The second seal includes a first sealing part, a second sealing part, and a connecting part connected together; The end of the first sealing part away from the second sealing part abuts against the main housing, and the end of the second sealing part away from the first sealing part abuts against the main housing, and the second sealing part is connected to the main housing; One end of the first sealing part is engaged with the first sealing element, and the connecting part is connected to the other end of the first sealing part and engaged with the third sealing element; The second sealing part extends in the same direction as the water guide groove, and the water guide structure is disposed on the second sealing part.

10. The indoor unit according to claim 9, characterized in that, The inner side of the first sealing part is provided with a plurality of first reinforcing ribs and a plurality of second reinforcing ribs; Multiple first reinforcing ribs are arranged at intervals along the horizontal direction, and multiple second reinforcing ribs are arranged at intervals along the vertical direction, with the first reinforcing ribs intersecting the second reinforcing ribs.

11. The indoor unit according to claim 10, characterized in that, The water guide rib includes a first sub-rib and a second sub-rib. The first sub-rib is located between the first sealing part and the water guide groove, and the second sub-rib is located between the main housing and the water guide groove. The first sub-rib is connected to the first reinforcing rib.

12. The indoor unit according to any one of claims 9 to 11, characterized in that, The bottom wall of the water receiving tray is located in a plane; The projection area of ​​the first seal on the plane falls within the bottom wall of the disk, and a portion of the projection area of ​​the second seal on the plane falls within the bottom wall of the disk.

13. The indoor unit according to any one of claims 1 to 7, 9 to 11, characterized in that, The main housing includes a top plate assembly, a bottom plate assembly, a surrounding plate, a first side plate, and a second side plate. The top plate assembly and the bottom plate assembly are disposed opposite to each other, and the first side plate and the second side plate are disposed opposite to each other. The enclosure, the first side plate, and the second side plate are all connected between the top plate assembly and the bottom plate assembly, and the top plate assembly, the bottom plate assembly, the enclosure, the first side plate, and the second side plate enclose the heat exchange cavity. The top plate assembly, the bottom plate assembly, the surrounding plate, and the first side plate are all connected to the sealing assembly, and the sealing assembly, the top plate assembly, the bottom plate assembly, the surrounding plate, and the first side plate together enclose and form the first sealing cavity.

14. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, It includes an outdoor unit and an indoor unit as described in any one of claims 1 to 13.

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