Direct-current brushless fan coil

Abstract

The direct-current brushless fan coil comprises an outer shell, a blowing heat exchange structure is arranged in the outer shell and used for achieving blowing and heat exchange in the outer shell, and a noise reduction structure is connected to an air inlet of the outer shell; the noise reduction structure comprises a connecting frame fixedly connected to the position, close to the air inlet, of the outer surface of the outer shell, the inner side of the connecting frame is rotationally connected with a hinge shaft, the outer surface of the hinge shaft is fixedly connected with a noise reduction plate, center shafts are rotationally connected into the two sides of the connecting frame, and jacking plates are fixedly connected to the outer surfaces of the center shafts. The blowing heat exchange structure comprises a motor fixedly connected to the position, close to the air outlet, in the outer shell, the output end of the motor is fixedly connected with a shaft rod, the outer surface of the shaft rod is rotationally connected with blades, and the shaft rod is driven by the motor to rotate. The fan coil solves the problems that after an existing fan coil runs for a period of time, noise is large, large wind noise exists, the life of people in the fan coil is troubled, and the noise is particularly obvious at night.

Description

Technical Field

[0001] This utility model relates to the field of fan coil technology, and more specifically, to a DC brushless fan coil unit. Background Technology

[0002] The motor used in DC brushless fan coil units is a DC brushless motor. This motor uses electronic commutation instead of the traditional mechanical commutation method. Fan coil units are terminal products of central air conditioning and are widely used in hotels, office buildings, hospitals, commercial and residential buildings, scientific research institutions and other areas.

[0003] A DC brushless fan coil unit with authorization announcement number CN206803345U is described. This utility model uses a DC brushless fan with a wide speed range and high efficiency. Combined with detection, communication and humidification equipment, it has enhanced functionality.

[0004] In existing technologies, fan coil units generate significant noise after operating for a period of time, which can disturb the lives of people inside, especially at night. Therefore, we have made improvements and proposed a DC brushless fan coil unit. Summary of the Invention

[0005] The purpose of this utility model is to address the problem that fan coil units generate significant noise after running for a period of time, which can disturb the lives of people inside, especially at night.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] A DC brushless fan coil unit is proposed to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] A DC brushless fan coil unit includes an outer shell, an air blowing and heat exchange structure is provided inside the outer shell to realize air blowing and heat exchange inside the outer shell, and a noise reduction structure is connected to the air inlet of the outer shell.

[0010] The noise reduction structure includes a connecting frame fixedly connected to the outer surface of the outer shell near the air inlet. A hinge shaft is rotatably connected to the inner side of the connecting frame. A noise reduction plate is fixedly connected to the outer surface of the hinge shaft. A central shaft is rotatably connected to the inner sides of the connecting frame. A push plate is fixedly connected to the outer surface of the central shaft.

[0011] As a preferred technical solution of this application, the air blowing heat exchange structure includes a motor fixedly connected to the inside of the outer shell near the air outlet. A shaft is fixedly connected to the output end of the motor, and blades are rotatably connected to the outer surface of the shaft. The motor drives the shaft to rotate, and the shaft drives the blades to rotate, blowing air from the air inlet into the inside of the outer shell.

[0012] As a preferred technical solution of this application, a heat exchange coil is fixedly connected to the outer surface of the outer shell, heat exchange fins are fixedly connected to the outer surface of the heat exchange coil, an air outlet filter is fixedly connected to the air outlet of the outer shell by screws, the number of heat exchange fins is several groups and they are spaced apart, the spacing between two adjacent groups of heat exchange fins is equal, and a fixing plate is fixedly connected to the outer surface of the outer shell.

[0013] As a preferred technical solution of this application, the two ends of the hinge shaft are embedded in the inner side of the connecting frame and form a rotational connection with the connecting frame through bearings. The noise reduction plate rotates around the hinge shaft as the axis. There are two sets of hinge shafts, which are staggered vertically. Each set of hinge shafts corresponds to one set of noise reduction plates. In the non-operating state, the two sets of noise reduction plates are parallel. The noise reduction plate is a rigid frame with holes on the outside and a porous sound insulation cotton structure inside. The noise reduction plate is used for sound insulation and noise reduction.

[0014] As a preferred technical solution of this application, the central shaft and the connecting frame are connected by a torsion spring to form an elastic rotational connection, and the jacking plate is a "J" shaped structure with a hook at one end.

[0015] As a preferred technical solution of this application, the noise reduction plate is rotated by the air intake through the outer opening of the connecting frame, and the position of the noise reduction plate is reset by the torsion spring. A limit block is fixedly connected to the inner surface of the connecting frame, which limits the maximum distance of the noise reduction plate to the side away from the top plate, and the top plate pushes the noise reduction plate to maintain its own stability.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] Through the noise reduction structure, the sound insulation effect of the device can be automatically adjusted according to the airflow force of the fan coil unit during use, so that no other noise will be generated during long-term use, effectively improving the resonance noise problem during long-term use. Attached Figure Description

[0019] Figure 1 This application provides an overall structural schematic diagram of a DC brushless fan coil unit;

[0020] Figure 2 The DC brushless fan coil unit provided in this application Figure 1 A schematic diagram of the cut-out section of the structure;

[0021] Figure 3 A partial structural diagram showing the cut-out of the noise reduction structure of a DC brushless fan coil unit provided in this application;

[0022] Figure 4The DC brushless fan coil unit provided in this application Figure 3 A schematic diagram of the cut-out section of the structure.

[0023] The image shows:

[0024] 1. Outer shell; 2. Fixing plate; 3. Noise reduction structure; 31. Connecting frame; 32. Hinge shaft; 33. Noise reduction plate; 34. Central shaft; 35. Push plate; 36. Limiting block; 4. Blade; 5. Motor; 6. Heat exchange coil; 7. Air outlet filter; 8. Heat exchange fins. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments, features, and technical solutions in the embodiments of this utility model can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] like Figure 1-4 As shown, this embodiment proposes a DC brushless fan coil unit, including an outer shell 1. An air-blowing heat exchange structure is provided inside the outer shell 1 to realize air blowing and heat exchange within the outer shell 1. A noise reduction structure 3 is connected to the air inlet of the outer shell 1. The air-blowing heat exchange structure includes a motor 5 fixedly connected to the interior of the outer shell 1 near the air outlet. A shaft is fixedly connected to the output end of the motor 5, and blades 4 are rotatably connected to the outer surface of the shaft. The motor 5 drives the shaft to rotate, and the shaft drives the blades 4 to rotate, blowing air from the air inlet into the interior of the outer shell 1. A heat exchange coil 6 is fixedly connected to the outer surface of the outer shell 1, and heat exchange fins 8 are fixedly connected to the outer surface of the heat exchange coil 6. An air outlet filter 7 is fixedly connected to the air outlet of the outer shell 1 by screws. The heat exchange fins 8 are in several groups and are spaced apart, with equal spacing between adjacent groups of heat exchange fins 8. A fixing plate 2 is fixedly connected to the outer surface of the outer shell 1.

[0029] The noise reduction structure 3 includes a connecting frame 31 fixedly connected to the outer surface of the outer shell 1 near the air inlet. A hinge shaft 32 is rotatably connected to the inner side of the connecting frame 31. A noise reduction plate 33 is fixedly connected to the outer surface of the hinge shaft 32. A central shaft 34 is rotatably connected to the inner sides of the connecting frame 31. A push plate 35 is fixedly connected to the outer surface of the central shaft 34. The two ends of the hinge shaft 32 are embedded in the inner side of the connecting frame 31 and are rotatably connected to the connecting frame 31 through bearings. The noise reduction plate 33 rotates around the hinge shaft 32. There are two sets of hinge shafts 32, which are staggered vertically. Each set of two sets of hinge shafts 32 corresponds to one set of noise reduction plates 33. In the non-operating state, the two sets of noise reduction plates 33 are parallel. The noise reduction plate 33 is a rigid frame with holes on the outside and a porous sound insulation cotton structure inside. The noise reduction plate 33 is used for sound insulation and noise reduction.

[0030] The central shaft 34 and the connecting frame 31 are elastically rotatably connected by a torsion spring. The actuating plate 35 is a "J"-shaped structure with a hook at one end. The noise reduction plate 33 is rotated by the air intake through the outer opening of the connecting frame 31, and the position of the noise reduction plate 33 is reset by the torsion spring. The inner surface of the connecting frame 31 is fixedly connected to a limiting block 36, which limits the maximum distance that the noise reduction plate 33 can rotate away from the actuating plate 35. The actuating plate 35 pushes the noise reduction plate 33 to maintain its own stability.

[0031] In this embodiment, the sound insulation effect of the device can be automatically adjusted according to the wind force of the fan coil unit during use, so that no other noise will be generated during long-term use, effectively improving the resonance noise problem during long-term use.

[0032] In summary, the working principle of this utility model is as follows:

[0033] During use, when ventilation or temperature control is required, the motor 5 can be started, which drives the shaft to rotate. The shaft drives the blades 4 to rotate, and the rotation of the blades 4 blows the air into the interior of the outer shell 1 through the noise reduction structure 3. At the same time, cold or hot fluid is injected through the pipes of the heat exchange coil 6. Through the blowing of the air and the action of the heat exchange fins 8, the cold or hot airflow can be blown in from the air outlet filter 7, thereby entering the room to achieve the effect of cooling or heating.

[0034] During the aforementioned process, the rotating blades 4 can draw air in from the outside of the connecting frame 31. Under the action of the wind, the outer noise reduction plate 33 will rotate slightly inward about the hinge shaft 32, and push the pushing plate 35 to rotate about the central axis 34. The other set of noise reduction plates 33 will remain stationary under the action of the wind, and the opening between the two sets of noise reduction plates 33 will become smaller. At this time, more air will pass through the noise reduction plate 33, and the noise reduction and sound insulation through the noise reduction plate 33 can achieve better noise reduction and sound insulation effect. The rotation angle of the outer noise reduction plate 33 about the hinge shaft 32 can be adjusted according to the wind force to achieve the purpose of adjusting the sound insulation effect. This can greatly reduce the noise caused by wind erosion when the fan coil unit is used for a long time, and achieve good noise reduction and sound insulation effect.

[0035] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A DC brushless fan coil unit, comprising a housing (1), characterized in that, The outer shell (1) is provided with a blowing heat exchange structure inside, which is used to realize blowing and heat exchange inside the outer shell (1). A noise reduction structure (3) is connected to the air inlet of the outer shell (1). The noise reduction structure (3) includes a connecting frame (31) fixedly connected to the outer surface of the outer shell (1) near the air inlet. A hinge shaft (32) is rotatably connected to the inner side of the connecting frame (31). A noise reduction plate (33) is fixedly connected to the outer surface of the hinge shaft (32). A central shaft (34) is rotatably connected to the inner sides of the connecting frame (31). A push plate (35) is fixedly connected to the outer surface of the central shaft (34).

2. The DC brushless fan coil unit according to claim 1, characterized in that, The air blowing heat exchange structure includes a motor (5) fixedly connected to the inside of the outer shell (1) near the air outlet. The output end of the motor (5) is fixedly connected to a shaft, and blades (4) are rotatably connected to the outer surface of the shaft. The motor (5) drives the shaft to rotate, and the shaft drives the blades (4) to rotate, blowing air from the air inlet into the inside of the outer shell (1).

3. A DC brushless fan coil unit according to claim 2, characterized in that, A heat exchange coil (6) is fixedly connected to the outer surface of the outer shell (1), and heat exchange fins (8) are fixedly connected to the outer surface of the heat exchange coil (6). An air outlet filter (7) is fixedly connected to the air outlet of the outer shell (1) by screws. The heat exchange fins (8) are in several groups and are distributed at intervals. The spacing between two adjacent groups of heat exchange fins (8) is equal. A fixing plate (2) is fixedly connected to the outer surface of the outer shell (1).

4. A DC brushless fan coil unit according to claim 1, characterized in that, The two ends of the hinge shaft (32) are embedded in the inner side of the connecting frame (31) and are rotatably connected to the connecting frame (31) through bearings. The noise reduction plate (33) rotates around the hinge shaft (32) as the axis. There are two sets of hinge shafts (32) and they are staggered vertically. Each of the two sets of hinge shafts (32) corresponds to a set of noise reduction plates (33). In the non-operating state, the two sets of noise reduction plates (33) are parallel. The noise reduction plate (33) is a rigid frame with holes on the outside and a porous sound insulation cotton structure inside. The noise reduction plate (33) is used for sound insulation and noise reduction.

5. A DC brushless fan coil unit according to claim 4, characterized in that, The central shaft (34) and the connecting frame (31) are elastically rotatably connected by a torsion spring, and the top plate (35) is a "J" shaped structure with a hook at one end.

6. A DC brushless fan coil unit according to claim 5, characterized in that, The noise reduction plate (33) is rotated by the air intake through the outer opening of the connecting frame (31) to blow air into it. The position of the noise reduction plate (33) is reset by the torsion spring. The inner surface of the connecting frame (31) is fixedly connected to the limiting block (36). The limiting block (36) limits the maximum distance that the noise reduction plate (33) can rotate away from the top plate (35). The top plate (35) pushes the noise reduction plate (33) to maintain its own stability.

Images