Central air conditioner indoor unit convenient to maintain

Abstract

The utility model discloses a central air conditioner indoor unit convenient to maintain, which comprises an indoor unit main body and a fan assembly, the indoor unit main body consists of an indoor unit shell, an air heat exchanger and a water pan, and the fan assembly consists of a connecting plate, a plurality of fan components and a plurality of wind wheel components. The connecting plate is movably connected with one side wall of the indoor unit shell through a plurality of screws, the fan assembly is composed of a fan support and a fan, lifting lugs are arranged on the two sides of the top end of the fan support, and the lifting lugs are movably connected to a top plate, extending outwards, of the indoor unit shell through screws. According to the central air conditioner indoor unit, the fan assembly can be rapidly detached from the indoor unit body in the maintenance stage, the area of the fan assembly connecting plate is designed to be maximized, the interior of the indoor unit is exposed in a large area after the fan assembly is detached, deep cleaning of the interior of the indoor unit and overhauling of all parts are facilitated, and maintenance is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of central air conditioning indoor unit technology, and in particular to a central air conditioning indoor unit that is easy to maintain. Background Technology

[0002] The indoor unit of a central air conditioning system is one of the terminal devices of an air conditioning system, consisting of a small fan, an electric motor, and coils (air heat exchangers). When chilled water (in water-based air conditioning systems) or Freon (in refrigerant systems) flows through the coils, it exchanges heat with the air outside the coils, thereby cooling, dehumidifying, or heating the air to regulate indoor air parameters. It is a commonly used terminal device for cooling and heating.

[0003] Traditional central air conditioning indoor units are typically installed on the ceiling. During maintenance, the fan and impeller need to be removed. Since the fan and impeller assemblies are bolted to the indoor unit body, and the operating space is limited, maintenance requires prolonged climbing to disassemble the fan and impeller assemblies separately, making maintenance inconvenient. Furthermore, after the fan and impeller assemblies are removed from the indoor unit body, the exposed area inside the indoor unit is small, making it difficult to clean the interior and inspect internal parts. Therefore, a central air conditioning indoor unit that is easy to maintain is needed to meet these requirements. Utility Model Content

[0004] The purpose of this utility model is to provide a central air conditioning indoor unit that is easy to maintain, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a central air conditioning indoor unit that is easy to maintain, comprising an indoor unit body and a fan assembly. The indoor unit body consists of an indoor unit casing, an air heat exchanger, and a water collection tray. The fan assembly consists of a connecting plate, several fan components, and several impeller components. The connecting plate is movably connected to one side wall of the indoor unit casing by several screws. The fan component consists of a fan bracket and a fan. Lifting lugs are provided on both sides of the top of the fan bracket. The lifting lugs are movably connected to the top plate extending outward from the indoor unit casing by screws. The fan bracket is movably connected to the connecting plate by several screws. The fan is movably connected to the fan bracket. The impeller assembly consists of an impeller shell and an impeller. The impeller is connected to the fan output shaft. One end of the impeller shell is inserted into the connecting plate and communicates with the interior of the indoor unit casing. The impeller shell is movably connected to the connecting plate by several screws and is wrapped around the outer wall of the impeller.

[0006] Preferably, the fan bracket has semi-circular grooves on both side walls, and the two ends of the fan are respectively fitted into the two semi-circular grooves. Hooks are provided on both sides of the two semi-circular grooves. Arc-shaped hoops are fastened to the two hooks of the same semi-circular groove. The two arc-shaped hoops of the same semi-circular groove are movably connected at their close ends by bolts and nuts.

[0007] Preferably, the two bolts are fitted with the same connecting band, which is arranged between the two arc-shaped clamps.

[0008] Preferably, the connecting plate has an insertion hole, a portion of the wind turbine housing is inserted into the insertion hole, the portion of the wind turbine housing that is movably connected to the end face of the connecting plate is extended, and a sealing gasket is provided at the end of the insertion hole near the extended portion of the wind turbine housing.

[0009] Preferably, the wind turbine housing consists of a first housing and a second housing, with the first housing movably connected to the connecting plate and the second housing movably connected to the first housing via a snap-fit ​​connection.

[0010] The beneficial effects of this utility model are:

[0011] This utility model utilizes a modular design for the fan assembly, allowing for quick disassembly of the fan assembly from the indoor unit during maintenance. Furthermore, the maximized area design of the fan assembly connection plate exposes a large portion of the indoor unit's interior after removal, facilitating thorough cleaning and inspection of all components, thus making maintenance more convenient. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a central air conditioning indoor unit that is easy to maintain, as proposed in this utility model.

[0013] Figure 2 This is an exploded structural diagram of a central air conditioning indoor unit that is easy to maintain, as proposed in this utility model.

[0014] Figure 3 This is a schematic diagram of the fan assembly structure of a central air conditioning indoor unit that is easy to maintain, as proposed in this utility model.

[0015] Figure 4 An exploded structural diagram illustrating the connection between the connecting plate and the fan assembly of a central air conditioning indoor unit, which is easy to maintain, according to this utility model.

[0016] Figure 5 This utility model presents an exploded structural diagram of the connection between the fan bracket and the arc-shaped hoop of a central air conditioning indoor unit, which is easy to maintain.

[0017] Figure 6This utility model presents an exploded view of the connection plate and impeller assembly of a central air conditioning indoor unit, which is easy to maintain.

[0018] Figure 7 This utility model presents a schematic diagram of the exploded connection between the connecting plate and the impeller assembly of a central air conditioning indoor unit, which is easy to maintain.

[0019] Figure 8 This is a schematic diagram of the exploded connection structure of the impeller shell of a central air conditioning indoor unit, which is easy to maintain, according to the present invention.

[0020] In the diagram: 1. Indoor unit body; 2. Fan assembly; 3. Indoor unit housing; 4. Air heat exchanger; 5. Water tray; 6. Connecting plate; 7. Fan assembly; 8. Impeller assembly; 9. Fan bracket; 10. Fan; 11. Impeller housing; 12. Impeller; 13. Semicircular groove; 14. Hook; 15. Arc-shaped clamp; 16. Bolt; 17. Nut; 18. Connecting strap; 19. Insertion hole; 20. Sealing gasket; 21. First housing; 22. Second housing; 23. Buckle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-8 A central air conditioning indoor unit that is easy to maintain includes an indoor unit body 1 and a fan assembly 2. The indoor unit body 1 consists of an indoor unit casing 3, an air heat exchanger 4, and a water collection tray 5. The fan assembly 2 consists of a connecting plate 6, several fan assemblies 7, and several impeller assemblies 8. The connecting plate 6 is movably connected to one side wall of the indoor unit casing 3 by several screws. The fan assembly 7 consists of a fan bracket 9 and a fan 10. The top two sides of the fan bracket 9 are provided with lifting lugs, which are movably connected to the top plate extending outward from the indoor unit casing 3 by screws. The bracket 9 is movably connected to the connecting plate 6 by several screws. The fan 10 is movably connected to the fan bracket 9. The impeller assembly 8 consists of an impeller housing 11 and an impeller 12. The impeller 12 is connected to the output shaft of the fan 10. One end of the impeller housing 11 is inserted into the connecting plate 6 and communicates with the interior of the indoor unit housing 3. The impeller housing 11 is movably connected to the connecting plate 6 by several screws and is wrapped around the outer wall of the impeller 12. The central air conditioning indoor unit includes, but is not limited to, duct-type indoor units (suitable for refrigerant systems) and fan coil units (suitable for water systems).

[0023] During maintenance, the power plug of the fan 10 is unplugged from a height. Tools are used to loosen the screws connecting the fan assembly 2 and the indoor unit body 1 (the screws connecting the connecting plate 6 and the indoor unit housing 3). The screws connecting the fan bracket 9 and the extended top of the indoor unit housing 3 are also loosened, separating the fan assembly 2 from the indoor unit body 1. The fan assembly 2 is then moved from a height to the ground, allowing one side wall of the indoor unit housing 3 to be hollowed out, exposing a large area of ​​the air heat exchanger 4. The impeller housing 11 is removed, exposing the impeller 12 to the outside. The connection between the fan 10 and the fan bracket 9 is disconnected, separating the fan 10. The screws connecting the fan bracket 9 and the connecting plate 6 are also removed, separating the fan bracket 9 from the connecting plate 6. The modular design facilitates the disassembly of various components, as well as subsequent individual repairs, maintenance, and deep cleaning, effectively improving maintenance efficiency and making the maintenance of the central air conditioning indoor unit more convenient and faster.

[0024] Specifically, in this embodiment, semicircular grooves 13 are provided on both side walls of the fan bracket 9. The two ends of the fan 10 are respectively fitted into the two semicircular grooves 13. Hooks 14 are provided on both sides of the two semicircular grooves 13. Arc-shaped hoops 15 are fastened to the two hooks 14 of the same semicircular groove 13. The two arc-shaped hoops 15 of the same semicircular groove 13 are movably connected at their close ends by bolts 16 and nuts 17. When the fan 10 is removed, the connection between the bolts 16 and nuts 17 is loosened, which reduces the locking effect between the two arc-shaped hoops 15. The two arc-shaped hoops 15 are removed from the corresponding hooks 14, which releases the fixing effect of the arc-shaped hoops 15 and the semicircular grooves 13 on the fan 10, thereby realizing the separation between the fan 10 and the fan bracket 9.

[0025] Specifically, in this embodiment, the same connecting band 18 is fitted on the two bolts 16, and the connecting band 18 is arranged between the two arc-shaped hoops 15 to improve the overall effect of the two locking mechanisms.

[0026] Specifically, in this embodiment, the connecting plate 6 has an insertion hole 19, and part of the wind turbine housing 11 is inserted into the insertion hole 19. The part of the wind turbine housing 11 that is movably connected to the end face of the connecting plate 6 is extended. A sealing gasket 20 is provided at one end of the insertion hole 19 near the extended part of the wind turbine housing 11, which improves the sealing performance of the connection between the wind turbine housing 11 and the connecting plate 6 after locking.

[0027] Specifically, in this embodiment, the wind turbine housing 11 is composed of a first housing 21 and a second housing 22. The first housing 21 is movably connected to the connecting plate 6, and the second housing 22 is movably connected to the first housing 21 through a snap fastener 23. The cooperation between the first housing 21 and the second housing 22 facilitates the opening and closing of the wind turbine housing 11, thereby facilitating the removal and installation of the wind turbine 12 inside the wind turbine housing 11.

[0028] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A central air conditioning indoor unit that is easy to maintain, comprising an indoor unit body (1) and a fan assembly (2), characterized in that: The indoor unit body (1) consists of an indoor unit housing (3), an air heat exchanger (4), and a water collection tray (5). The fan assembly (2) consists of a connecting plate (6), several fan components (7), and several impeller components (8). The connecting plate (6) is movably connected to one side wall of the indoor unit housing (3) by several screws. The fan component (7) consists of a fan bracket (9) and a fan (10). The top two sides of the fan bracket (9) are provided with lifting lugs, which are movably connected to the top of the indoor unit housing (3) extending outward by screws. On the plate, the fan bracket (9) is movably connected to the connecting plate (6) by a number of screws, the fan (10) is movably connected to the fan bracket (9), the impeller assembly (8) consists of an impeller shell (11) and an impeller (12), the impeller (12) is connected to the output shaft of the fan (10), one end of the impeller shell (11) is inserted into the connecting plate (6) and communicates with the interior of the indoor unit shell (3), the impeller shell (11) and the connecting plate (6) are movably connected by a number of screws and are wrapped around the outer wall of the impeller (12).

2. The easily maintainable central air conditioning indoor unit according to claim 1, characterized in that: The fan bracket (9) has semicircular grooves (13) on both side walls. The two ends of the fan (10) are respectively fitted into the two semicircular grooves (13). Hooks (14) are provided on both sides of the two semicircular grooves (13). Arc-shaped hoops (15) are fastened to the two hooks (14) of the same semicircular groove (13). The two arc-shaped hoops (15) of the same semicircular groove (13) are connected to each other by bolts (16) and nuts (17) at the ends that are close to each other.

3. A central air conditioning indoor unit that is easy to maintain according to claim 2, characterized in that: The two bolts (16) are fitted with the same connecting band (18), which is arranged between the two arc-shaped hoops (15).

4. The easily maintainable central air conditioning indoor unit according to claim 1, characterized in that: The connecting plate (6) has an insertion hole (19). Part of the wind turbine housing (11) is inserted into the insertion hole (19). The part of the wind turbine housing (11) that is movably connected to the end face of the connecting plate (6) is extended. A sealing gasket (20) is provided at one end of the insertion hole (19) near the extended part of the wind turbine housing (11).

5. A central air conditioning indoor unit that is easy to maintain according to claim 1, characterized in that: The wind turbine outer shell (11) is composed of a first shell (21) and a second shell (22). The first shell (21) is movably connected to the connecting plate (6), and the second shell (22) is movably connected to the first shell (21) by a buckle (23).

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