A surface-mounted ultra-thin fan-coil

Abstract

The utility model provides a kind of surface-mounted ultra-thin fan coil, two side plates are symmetrically installed in backplate, two side plates are installed with hanging joint part at the edge of one side of back face, the upper surface of guide rail is processed with the insertion slot of the arrangement along guide rail length direction, two connecting plates are connected with two corners respectively by fastener formed by first screw and first nut, the insertion part is inserted in insertion slot, the perforation for inserting expansion bolt is opened in the side surface of lug, L-shaped plate is installed in the side surface of lug, and a plurality of positioning screws for limiting the relative position of L-shaped plate and guide rail are threadedly connected in the side surface of L-shaped plate, the utility model has the beneficial effects that: the relative position of expansion bolt hole and wall surface is adjusted without adjusting the position of surface-mounted ultra-thin fan coil.

Description

Technical Field

[0001] This utility model is an exposed ultra-thin fan coil unit, belonging to the field of fan coil units. Background Technology

[0002] Surface-mounted ultra-thin fan coil units are widely used terminal devices in indoor air conditioning systems. Their ability to be quickly assembled after unpacking, without requiring complex concealed installations, makes them a preferred solution for scenarios prioritizing space utilization and installation efficiency. Their surface-mounted design allows the main components, such as the fan, coil, and casing, to be directly exposed in the indoor space, eliminating the need for embedding in ceilings or walls, significantly shortening the installation cycle. The ultra-thin structure further reduces the vertical space occupied by the equipment, allowing for flexible adaptation to confined areas. Therefore, they are more suitable for temporary offices, small apartments, and other scenarios with high requirements for space compactness, clear demands for ease of installation, and relatively relaxed requirements for interior decoration uniformity and air conditioning performance (such as heat exchange efficiency and noise reduction).

[0003] In actual installation, using expansion bolts to fix the equipment to the wall is the most common method. This method ensures the long-term stable operation of the equipment through the mechanical anchoring force between the bolts and the wall. However, in environments with extremely limited indoor space (such as small bedrooms or compact office cubicles), the installation area for surface-mounted ultra-thin fan coil units is often strictly limited. It may only be able to fit a local area on a specific wall, or even need to avoid obstacles such as doors, windows, sockets, and furniture, making the available installation points very limited.

[0004] At this point, the pre-set expansion bolt holes on the equipment must precisely align with the effective anchoring area of ​​the wall to ensure a secure installation. However, due to the limited space and wall conditions, some wall locations corresponding to the pre-set holes may have potential hazards: the wall may have a hollow structure (such as the cavity layer of a lightweight partition wall), failing to provide sufficient gripping force; the wall substrate material may be of insufficient strength (such as excessively thick plasterboard or putty layers), unable to support the weight of the equipment; or the area may have previously been drilled or repaired, damaging the integrity of the wall structure. These situations can all lead to the expansion bolts failing to anchor effectively, resulting in bolts loosening after drilling, inability to tighten, or even the equipment tilting or falling off after installation. This not only affects the normal use of the equipment but may also pose hazards to the indoor environment and personnel safety. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an exposed ultra-thin fan coil unit to solve the problems mentioned in the background technology. This utility model adjusts the relative position of the expansion bolt holes and the wall surface without adjusting the position of the exposed ultra-thin fan coil unit.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a surface-mounted ultra-thin fan coil unit, comprising: The back panel has a "C" shaped cross-section, and an air outlet is machined on the top of the back panel; The back panel has two side panels, which are symmetrically installed inside the back panel. Each side panel has a hook-on part on one side edge of the opposite side, and the hook-on part has two vertically arranged fixing holes on one side. The guide rail is arranged laterally, and the upper surface of the guide rail is machined with insertion grooves arranged along the length of the guide rail. There are two connecting plates. The two connecting plates are respectively connected to the two corners by fasteners formed by the first screw and the first nut. The guide rail end closest to the side plate is connected and fixed to the connecting plate. The lower end of the lug is fitted with a plug-in part, which is inserted into a plug-in groove. The upper end of the lug extends to the upper side of the guide rail. One side of the lug has a through hole for inserting an expansion bolt. An L-shaped plate is installed on one side of the lug and is snapped onto the guide rail. Multiple positioning screws for limiting the relative position of the L-shaped plate and the guide rail are threaded onto one side of the L-shaped plate.

[0007] Furthermore, the guide rail is provided with multiple guide rails, and two connecting ears are symmetrically installed on the lower surface of the guide rail. One connecting ear on one guide rail is connected to a connecting ear on another guide rail by fasteners formed by multiple sets of second screws and second nuts.

[0008] Furthermore, the cross-section of the insertion slot is an inverted "T" shape, the cross-section of the insertion part is rectangular, and the insertion part and the support ear are integrally formed.

[0009] Furthermore, a protrusion is fixedly connected to the end of the lug away from the insertion part, and the protrusion and the lug are integrally formed.

[0010] Furthermore, an evaporator is installed at the upper part of the space formed by the back plate and the two side plates. The evaporator is connected to the two side plates by screws. A condensate pan is provided directly below the evaporator. A fan driven by a DC brushless motor is installed on the lower surface of the condensate pan. The air outlet of the fan extends through the condensate pan to the upper side of the condensate pan.

[0011] Furthermore, a mesh plate is provided on the side of the fan away from the back plate, and the mesh plate is connected to the two side plates and the bottom of the back plate by screws.

[0012] Furthermore, an end cap is provided on the upper side of the mesh plate, and the end cap is connected to the side plate and the back plate by screws.

[0013] Furthermore, multiple air guide plates are installed inside the air outlet, and the multiple air guide plates are arranged at equal intervals inside the air outlet.

[0014] The beneficial effects of this utility model are: The lugs slide into the guide rail's slot via their lower insertion part, allowing for free adjustment along the guide rail's length. Combined with the L-shaped plate and positioning screws, the lugs can be moved by loosening the positioning screws, and locked in place by tightening them after adjustment. This design allows the holes for the expansion bolts to flexibly avoid hollow wall layers, weak base layers, or obstacles, effectively anchoring the fan coil unit to the wall without moving the main body, thus solving the anchoring failure problem caused by traditional pre-set hole positions.

[0015] The guide rails can be spliced ​​in multiple sections using connecting lugs and fasteners, extending the overall length and further expanding the adjustment range of the lugs. Even in narrow or irregular wall areas, the number of guide rails can be increased to adapt to installation needs, improving the equipment's adaptability in complex spaces. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of an exposed ultra-thin fan coil unit according to the present invention; Figure 2 This is a perspective view of another aspect of the exposed ultra-thin fan coil unit of this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is an assembly diagram of the fan, condensate pan, evaporator and side plate in a surface-mounted ultra-thin fan coil unit according to this utility model; Figure 5 This is an exploded structural diagram of the support lugs, connecting plates, and guide rails in an exposed ultra-thin fan coil unit according to this utility model. Figure 6 This is a diagram illustrating one embodiment of the backplate of an exposed ultra-thin fan coil unit according to this utility model; Figure 7 This is a diagram illustrating one embodiment of the exposed ultra-thin fan coil unit cover plate of this utility model; Figure 8 This is a diagram illustrating one embodiment of the fan in an exposed ultra-thin fan coil unit according to this utility model; In the picture: 1. Back panel; 11. Cover plate; 12. Air guide plate; 13. Mesh plate; 2. Side panel; 21. Hanging part; 22. Fixing hole; 3. Guide rail; 31. Connecting plate; 32. Insertion slot; 33. Connecting ear; 34. L-shaped plate; 35. Positioning screw; 36. Support ear; 37. Through hole; 38. Protrusion; 39. Insertion part; 4. Evaporator; 5. Condensate pan; 51. Fan. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figure 1 , Figure 2 and Figure 4 This utility model provides a technical solution: an exposed ultra-thin fan coil unit, including a back plate 1 with a "C"-shaped cross-section. An air outlet is machined at the top of the back plate 1, and multiple equidistant air guide plates 12 are installed inside the air outlet. An inclined evaporator 4 is installed at the upper part of the space formed by the back plate 1 and two side plates 2, and the inclined evaporator 4 is connected to the two side plates 2 by screws, thereby reducing the overall thickness. A condensate pan 5 is located directly below the evaporator 4, and a fan 51 driven by a DC brushless motor is installed on the lower surface of the condensate pan 5. The air outlet of the fan 51 extends through the condensate pan 5 to the upper side of the condensate pan 5. 7-12℃ chilled water is introduced, and the air is cooled as it flows through the coil of the evaporator 4. 45-60℃ hot water is introduced into the coil, and the heated air is then sent back into the room. The fan 51 drives the indoor air to continuously pass through the coil, forming a continuous heat exchange cycle. The motor is a DC brushless motor, which has low noise and adjustable speed. A mesh plate 13 is provided on the side of the fan 51 away from the back plate 1. The mesh plate 13 is connected to the two side plates 2 and the bottom of the back plate 1 by screws. An end cover 11 is provided on the upper side of the mesh plate 13. The end cover 11 is connected to the side plates 2 and the back plate 1 by screws. The mesh plate 13 can prevent dust from entering the equipment, reduce dust accumulation in the evaporator 4 and the fan 51, and extend the service life of the components.

[0019] See Figures 1-5 There are two side plates 2, which are symmetrically installed inside the back plate 1. Each side plate 2 has a hook part 21 installed on one side edge of the opposite side. The hook part 21 has two vertically arranged fixing holes 22 on one side. There are two connecting plates 31. The two connecting plates 31 are connected to the two corners respectively by fasteners formed by the first screw and the first nut. The guide rail 3 closest to the side plate 2 is connected and fixed to the connecting plate 31. After the first screw passes through the small hole and the corresponding fixing hole 22 on the connecting plate 31, the first nut is screwed on to complete the assembly of the guide rail 3 and the side plate 2. There is no need to modify the original parts.

[0020] The guide rail 3 is arranged horizontally. The upper surface of the guide rail 3 is machined with a insertion groove 32 arranged along the length of the guide rail 3. The cross-section of the insertion groove 32 is an inverted "T" shape. The lower end of the support ear 36 is equipped with an insertion part 39. The cross-section of the insertion part 39 is rectangular. The insertion part 39 and the support ear 36 are integrally formed, so that the insertion part 39 is inserted into the insertion groove 32 to realize the insertion of the support ear 36 and the guide rail 3. The upper end of the support ear 36 extends to the upper side of the guide rail 3. One side of the support ear 36 is provided with a through hole 37 for inserting expansion bolts. An L-shaped plate 34 is installed on one side of the support ear 36. The L-shaped plate 34 is snapped onto the guide rail 3. Multiple positioning screws 35 for limiting the relative position of the L-shaped plate 34 and the guide rail 3 are threaded on one side of the L-shaped plate 34. The insertion part 39 at the lower end of the bracket 36 and the insertion groove 32 on the guide rail 3 adopt a sliding fit structure, which not only ensures that the bracket 36 can slide smoothly along the length of the guide rail 3, but also prevents the bracket 36 from longitudinally shifting or falling off during the sliding process through the shape constraint of the insertion groove 32 and the insertion part 39. This design gets rid of the limitation of the fixed position of the preset hole of the traditional fan coil unit: when there is a hollow layer, a thin base layer of gypsum board on the wall of the installation area, or when it is necessary to avoid obstacles such as door frames, sockets, and pipelines, the operator does not need to move the main body of the fan coil unit, nor does he / she need to readjust the relative position of the back plate 1, side plate 2 and the wall. He / she only needs to push the bracket 36 to make the through hole 37 for inserting expansion bolts move synchronously with the bracket 36 until the through hole 37 is aligned with the effective anchoring area of ​​the wall, such as solid walls and concrete base layers, thus avoiding the anchoring failure problem caused by the misalignment of the preset hole with the effective area of ​​the wall from the root.

[0021] After the position of the lug 36 is adjusted, the fixing structure formed by the L-shaped plate 34 and the positioning screws 35 can securely lock the lug 36. One end of the L-shaped plate 34 is fixedly connected to the side of the lug 36, and the other end is bent and snapped onto the edge of the guide rail 3, forming a lateral constraint on the lug 36. At the same time, the multiple positioning screws 35 threaded to the side of the L-shaped plate 34 can be tightened to press against the surface of the guide rail 3, and the friction force can be used to further limit the relative sliding between the L-shaped plate 34 and the guide rail 3, ultimately achieving double fixation of the position of the lug 36. The end of the lug 36 away from the insertion part 39 is connected and fixed with a protrusion 38. The protrusion 38 and the lug 36 are integrally formed. After the lug 36 is installed, the protrusion 38 abuts against the wall, thereby improving stability.

[0022] See Figures 1-3 and Figure 5The guide rails 3 are provided with multiple rails. Two connecting ears 33 are symmetrically installed on the lower surface of each guide rail 3. One connecting ear 33 on one guide rail 3 is connected to a corresponding connecting ear 33 on another guide rail 3 via fasteners formed by multiple sets of second screws and second nuts. When the length of a single guide rail 3 cannot cover a narrow wall area, or when it needs to adapt to an irregular wall installation path, multiple guide rails 3 can be arranged sequentially, so that the connecting ears 33 of adjacent guide rails 3 are fitted together. Then, fasteners formed by multiple sets of second screws and second nuts are inserted into the fitted connecting ears 33 and tightened, thus achieving a stable splicing of the guide rails 3 and allowing the overall length of the guide rails 3 to be flexibly extended according to installation requirements. This modular design not only eliminates the need for additional processing and modification of the guide rail 3, but also allows for matching the installation range of different walls by increasing or decreasing the number of guide rails 3. This, in turn, drives the bracket 36 to expand its adjustment range synchronously along the extended length of the guide rail 3, providing sufficient sliding space for the bracket 36. This ensures that the through holes 37 on the bracket 36 for inserting expansion bolts can always find an effective anchoring area on the wall, solving the problem of insufficient adjustment range of traditional fixed-length guide rails 3 in complex spaces and improving the installation adaptability of the entire fan coil unit in diverse indoor environments.

[0023] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A surface-mounted ultra-thin fan coil unit, characterized in that, include: The back panel (1) has a "C" shaped cross-section and an air outlet is machined on the top of the back panel (1); There are two side panels (2), which are symmetrically installed inside the back panel (1). Each of the two side panels (2) has a hook part (21) installed on one side edge of the opposite side. The hook part (21) has two vertically arranged fixing holes (22) on one side. The guide rail (3) is arranged laterally, and the upper surface of the guide rail (3) is machined with a plug groove (32) arranged along the length direction of the guide rail (3). There are two connecting plates (31). The two connecting plates (31) are connected to the two corners respectively by fasteners formed by the first screw and the first nut. The guide rail (3) closest to the side plate (2) is connected and fixed to the connecting plate (31). The lower end of the lug (36) is fitted with a plug (39), which is inserted into the plug groove (32). The upper end of the lug (36) extends to the upper side of the guide rail (3). One side of the lug (36) is provided with a through hole (37) for inserting expansion bolts. One side of the lug (36) is fitted with an L-shaped plate (34), which is snapped onto the guide rail (3). One side of the L-shaped plate (34) is threaded with multiple positioning screws (35) for limiting the relative position of the L-shaped plate (34) and the guide rail (3).

2. The exposed ultra-thin fan coil unit according to claim 1, characterized in that: The guide rail (3) is provided with multiple types, and two connecting ears (33) are symmetrically installed on the lower surface of the guide rail (3). One connecting ear (33) on one guide rail (3) is connected to the connecting ear (33) on the other guide rail (3) by fasteners formed by multiple sets of second screws and second nuts.

3. The exposed ultra-thin fan coil unit according to claim 1, characterized in that: The cross-section of the insertion slot (32) is an inverted "T" shape, the cross-section of the insertion part (39) is rectangular, and the insertion part (39) and the support ear (36) are integrally formed.

4. The exposed ultra-thin fan coil unit according to claim 1, characterized in that: The end of the lug (36) away from the plug (39) is connected and fixed with a protrusion (38), and the protrusion (38) and the lug (36) are integrally formed.

5. The exposed ultra-thin fan coil unit according to claim 1, characterized in that: An evaporator (4) is installed at the upper part of the space formed by the back plate (1) and the two side plates (2). The evaporator (4) is connected to the two side plates (2) by screws. A condensate pan (5) is provided directly below the evaporator (4). A fan (51) driven by a DC brushless motor is installed on the lower surface of the condensate pan (5). The air outlet of the fan (51) extends through the condensate pan (5) to the upper side of the condensate pan (5).

6. The exposed ultra-thin fan coil unit according to claim 5, characterized in that: The fan (51) has a mesh plate (13) on the side away from the back plate (1), and the mesh plate (13) is connected to the two side plates (2) and the bottom of the back plate (1) by screws.

7. The exposed ultra-thin fan coil unit according to claim 6, characterized in that: The mesh plate (13) is provided with an end cap (11) on the upper side, and the end cap (11) is connected to the side plate (2) and the back plate (1) by screws.

8. The exposed ultra-thin fan coil unit according to claim 1, characterized in that: Multiple air guide plates (12) are installed inside the air outlet, and the multiple air guide plates (12) are arranged at equal intervals inside the air outlet.

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