Fan assembly for fan coil and fan coil thereof

Abstract

The utility model relates to a fan assembly for a fan coil and the fan coil. The fan assembly comprises a motor, a first windshield, a volute and cross-flow fan blades. The motor is fixed with the box body of the fan coil and comprises a motor shaft, the first windproof cover covers the first through hole of the partition plate and is in sealed connection with the partition plate, the first windproof cover is provided with a second through hole, the volute is in sealed connection with the first windproof cover, and the cross-flow fan blade is located in the volute and is in transmission connection with the motor shaft. According to the fan assembly for the fan coil, the first windproof cover is arranged between the volute and the partition plate and is in sealed connection with the volute and the partition plate, on one hand, the distance of wind blown to the other side of the partition plate by the volute is adjusted, vibration caused by blowing is reduced, and noise is lowered; and on the other hand, wind blown to the other side of the partition plate by the volute is prevented from fleeing into the first wind cavity from a gap between the volute and the partition plate, and vibration and noise caused by air flow fleeing are reduced. The utility model has the advantages of little vibration, low noise and long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning equipment, in particular to a fan assembly for a fan coil unit. Background Art

[0002] The existing fan coil unit is referred to as fan coil for short, which is one of the terminal devices of the heat pump system composed of a box body, a fan assembly and a coil assembly.

[0003] The high noise level of the terminal fan coil unit will affect people's experience, so the noise level determines the market competitiveness of the product to a certain extent. The fan assembly, as the only moving part, is the biggest source of noise in the operation of the fan coil unit.

[0004] First, the vibration of the motor will bring noise, and then the vibration of other components caused by the vibration of the motor will also bring noise, such as the vibration caused by various errors between components (dimensional error, assembly error, etc.), the vibration caused by the eccentric operation of the motor shaft, the vibration caused by the imbalance of the fan blades (including mass imbalance and aerodynamic imbalance), the vibration caused by the wear of the bearing seat or bearing, etc. These vibrations will not only bring noise, but also endanger the product life and safety of use. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a fan assembly for a fan coil unit, by setting a first wind shield between the volute and the partition and sealing the connection, on the one hand, the distance between the volute and the partition is adjusted, so that the distance of the wind blown from the volute to the other side of the partition is adjusted, which can reduce the vibration and noise caused by the blowing; on the other hand, it can effectively prevent the wind blown from the volute to the other side of the partition from leaking out from the gap between the volute and the partition into the first air cavity, reducing the vibration and noise caused by the airflow leaking out. It has the advantages of less vibration, less noise and long service life.

[0006] A fan assembly for a fan coil unit, the fan coil unit comprising a housing, the housing comprising a partition and a first air cavity located on one side of the partition, the partition being provided with a first through hole, the fan assembly being located in the first air cavity, and characterized in that the fan assembly comprises a motor, a first wind shield, a volute and cross-flow blades; the motor is fixed to the housing and comprises a motor shaft, the first wind shield is provided on the first through hole and is sealed with the partition, the first wind shield is provided with a second through hole, the volute is sealed with the first wind shield, the cross-flow blades are located in the volute and are drivingly connected with the motor shaft.

[0007] The fan assembly for fan coil unit described in the utility model is provided with a first wind shield between the volute and the partition and sealedly connected. On the one hand, the distance between the volute and the partition is adjusted, so that the distance of the wind blown from the volute to the other side of the partition is adjusted, which can reduce the vibration and noise caused by the blowing; on the other hand, it can effectively prevent the wind blown from the volute to the other side of the partition from leaking out from the gap between the volute and the partition into the first air cavity, reducing the vibration and noise caused by the airflow leaking out. It has the advantages of less vibration, less noise and long service life.

[0008] Furthermore, the distance between the second through hole and the partition is 34-38 mm. When the distance between the second through hole and the partition is less than 34 mm, the wind blown out by the cross-flow fan cannot be kept uniform, and blows to the finned heat exchanger in a state of near laminar flow, which will cause the heat exchanger efficiency to be unable to be maximized; when the distance between the second through hole and the partition is greater than 38 mm, the wind resistance will increase, the air volume will be severely attenuated, and effective heat exchange cannot be achieved.

[0009] Furthermore, it also includes a suspension bearing seat and a suspension bearing, wherein the suspension bearing seat is fixed to the box body, the suspension bearing is fixed to the suspension bearing seat, and the suspension bearing is connected to the motor shaft. By adopting the suspension bearing and integrating the suspension bearing with the suspension bearing, the vibration transmitted from the motor shaft to the box body is reduced, thereby reducing the operating noise of the fan coil unit.

[0010] Furthermore, a shock-absorbing pad is included, and the motor is fixed to the box body through the shock-absorbing pad. By using the shock-absorbing pad, the vibration of the motor is absorbed, the vibration transmitted from the motor to the box body is reduced, and the operating noise of the fan coil unit is reduced.

[0011] Furthermore, it also includes a second wind shield, which is arranged on the partition and sealed to the partition, and the motor is also fixed to the second wind shield. The second wind shield is arranged between the volute and the partition, and is sealed to effectively prevent the wind blown from the volute to the other side of the partition from leaking out of the gap at the fixed point of the motor on the partition into the first wind cavity, thereby reducing the vibration and noise caused by the airflow leaking out.

[0012] Furthermore, the volute is sequentially passed through the second through hole and the first through hole, so that the wind blown out from the volute is prevented from vibrating due to interference from the partition, thereby reducing noise.

[0013] Furthermore, a sealing plate is included, the sealing plate is located in the wind shield and fixed to the partition, the sealing plate surrounds the first through hole and is arranged close to the volute. By arranging the sealing plate at the connection between the first through hole and the volute, it is possible to prevent the wind from the volute blowing to the other side of the partition from leaking out of the gap between the volute and the partition into the first air cavity, thereby reducing the vibration and noise caused by the airflow leaking out.

[0014] Furthermore, it also includes a coupling and a transmission shaft, wherein the transmission shaft is connected to the motor shaft through the coupling, and the crossflow blades are in transmission connection with the transmission shaft. By providing the coupling, the vibration of the transmission shaft is buffered and weakened, thereby reducing the vibration and noise generated when the shaft rotates.

[0015] The utility model also provides a fan coil unit comprising any of the above-mentioned fan components for a fan coil unit, wherein the box body is further provided with a second air cavity located on the other side of the partition, and the fan coil unit further comprises a coil component located in the second air cavity.

[0016] Furthermore, the coil assembly includes two coil connection parts, both of which are sealed and connected to the box body, and the fan coil unit also includes two foam connection parts, both of which are located in the second air cavity and between the partition and the coil connection part, and both of which are sealed and connected to the box body and the coil connection part. The foam connection part forms a closed air duct in the second air cavity, which, on the one hand, improves the smoothness of the air duct and avoids vibration, and on the other hand, condensation is not easy to form on the surface of the foam material, which can reduce the situation of water dripping from the fan coil unit indoors. On the one hand, the poor performance of the foam material is conducive to reducing temperature loss.

[0017] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a box structure of a fan coil unit according to an embodiment;

[0019] Figure 2 This is a schematic structural diagram of a fan assembly for a fan coil unit according to an embodiment;

[0020] Figure 3 This is a schematic diagram of the structure of a suspension bearing seat and a suspension bearing according to an embodiment;

[0021] Figure 4 A schematic diagram of a partial structure of a fan assembly for a fan coil unit according to an embodiment;

[0022] Figure 5 This is a schematic structural diagram of a fan assembly for a fan coil unit according to an embodiment;

[0023] Figure 6 A schematic cross-sectional structure diagram of a fan assembly for a fan coil unit according to an embodiment;

[0024] Figure 7 A schematic diagram of a partial structure of a fan assembly for a fan coil unit according to an embodiment;

[0025] Figure 8 This is a schematic structural diagram of a fan coil unit according to an embodiment;

[0026] Among them, the box body 1, the partition 101, the first through hole 1011, the first cavity 102, the second cavity 103, the motor bracket 2, the motor 3, the first wind shield 4, the second through hole 41, the volute 5, the crossflow fan blade 6, the suspension bearing seat 7, the suspension bearing 8, the shock absorbing pad 9, the second wind shield 10, the sealing plate 11, the coil connecting part 12, the radiator 13, and the foam connecting part 14. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0028] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0029] Based on the embodiments in the embodiments of the present application, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the embodiments of the present application.

[0030] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0031] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0032] It should be understood that the embodiments of the present application are not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the embodiments of the present application is limited only by the appended claims.

[0033] The fan assembly for a fan coil unit described in the utility model is suitable for a fan coil unit having the following structure: Figure 1The fan coil unit includes a housing 1, and the housing 1 generally refers to a structure or a combination of structures corresponding to the entire outer shell of the fan coil unit. There are several cavities in the housing 1, and the housing 1 includes a partition 101, a first air cavity located on one side of the partition 101, and a second air cavity located on the other side of the partition 101. The first cavity 102 generally refers to a cavity for accommodating a fan assembly of the fan coil unit, and the second air cavity generally refers to a cavity for accommodating a coil assembly (heat exchanger assembly) of the fan coil unit. It should be noted that the housing 1 may also have other cavities due to the structural requirements of the fan coil unit, and it is not limited to the first cavity 102 and the second cavity 103. The partition 101 is located in the housing 1, and the partition 101 is provided with a first through hole 1011. It should be noted that the number of the first through holes 1011 can be adjusted according to the number of the cross-flow blades 6 and the volute 5.

[0034] The present invention provides a fan assembly for a fan coil unit. The fan assembly is located in the first cavity 102. Figure 2 The fan assembly includes a motor bracket 2, a motor 3, a first wind shield 4, a volute 5 and a crossflow blade 6; the motor bracket 2 is fixed to the partition 101 and the top of the box body 1, the motor 3 is fixed on the motor bracket 2 and includes a motor 3 shaft, the first wind shield 4 is set on the first through hole 1011 and is sealed and connected to the partition 101, the first wind shield 4 is provided with a second through hole 41, the volute 5 is sealed and connected to the first wind shield 4, and the crossflow blade 6 is located in the volute 5 and is connected to the motor 3 shaft. The utility model is provided with a first wind shield 4 between the volute 5 and the partition 101 and is sealed. On the one hand, the distance between the volute 5 and the partition 101 is adjusted, so that the distance of the wind blown from the volute 5 to the other side of the partition 101 is adjusted, which can reduce the vibration caused by the blowing and reduce the noise; on the other hand, it can effectively prevent the wind blown from the volute 5 to the other side of the partition 101 from the gap between the volute 5 and the partition 101 to the first wind cavity, thereby reducing the vibration and noise caused by the airflow.

[0035] In a further embodiment, the distance between the second through hole 41 and the partition 101 is 34-38 mm. When the distance between the second through hole 41 and the partition 101 is less than 34 mm, the wind blown by the cross-flow fan cannot be kept uniform, and blows to the finned heat exchanger in a state of nearly laminar flow, which will cause the heat exchanger efficiency to be unable to be maximized; when the distance between the second through hole 41 and the partition 101 is greater than 38 mm, the wind resistance will increase, the air volume will be severely attenuated, and effective heat exchange cannot be achieved.

[0036] In order to reduce the vibration transmitted from the motor 3 shaft to the box 1, and thus reduce the operating noise of the fan coil unit. Figure 3The motor 3 assembly further includes a suspension bearing seat 7 and a suspension bearing 8, the suspension bearing seat 7 is fixed to the partition 101, the suspension bearing 8 is fixed to the suspension bearing seat 7, and the suspension bearing 8 is connected to the shaft of the motor 3. Further, the suspension bearing 8 and the suspension bearing seat 7 can be designed as one piece.

[0037] In order to reduce the vibration transmitted from the motor 3 to the housing 1, and thus reduce the operating noise of the fan coil unit. Figure 4 The motor 3 assembly further includes a shock absorbing pad 9, and the motor 3 is fixed to the box body 1 through the shock absorbing pad 9. The rubber shock absorbing pad 9 can effectively absorb the vibration of the motor 3. In a specific embodiment, a 17 mm rubber shock absorbing pad 9 can be used.

[0038] In order to prevent the wind from the volute 5 blowing to the other side of the partition 101 from leaking out of the gap at the fixed point of the motor 3 on the partition 101 into the first air cavity, the vibration and noise caused by the airflow leaking out are reduced. In one embodiment, please refer to Figure 5 The motor 3 assembly also includes a second wind shield 10 , which is disposed on the partition 101 and is sealed with the partition 101 , and the motor 3 is also fixed to the second wind shield 10 .

[0039] In order to prevent the wind blown out from the volute 5 from vibrating due to interference from the partition 101, thereby reducing noise. Figure 6 The volute 5 passes through the second through hole 41 and the first through hole 1011 in sequence.

[0040] In order to prevent the wind from the volute 5 blowing to the other side of the partition 101 from leaking out of the gap between the volute 5 and the partition 101 into the first air cavity, the vibration and noise caused by the airflow leaking out are reduced. Figure 7 The motor 3 assembly also includes a sealing plate 11, which is located in the wind shield and fixed to the partition 101. The sealing plate 11 surrounds the first through hole 1011 and is arranged close to the volute 5.

[0041] In order to reduce the vibration and noise generated when the shaft rotates, in one embodiment, the motor 3 assembly further includes a coupling and a transmission shaft, the transmission shaft is connected to the motor 3 shaft through the coupling, and the crossflow blades 6 are connected to the transmission shaft in a transmission manner. By providing the coupling, the vibration of the transmission shaft is buffered and weakened.

[0042] In a second aspect, the utility model further provides a fan coil unit comprising any of the above-mentioned fan assemblies for a fan coil unit, and further comprising a coil unit assembly located in the second air cavity.

[0043] In order to improve the smoothness of the air duct and avoid vibration and noise. In one embodiment, refer to Figure 8The coil assembly includes two coil connection parts 12, both of which are sealed and connected to the box body 1, and the radiator 13 is located between the two coil connection parts 12 and fixed to the two coil connection parts 12. The fan coil also includes two foam connection parts 1, both of which are located in the second air cavity and between the partition 101 and the coil connection part 12, and both of the foam connection parts 1 are sealed and connected to the box body 1 and the coil connection part 12. The foam connection part 1 forms a closed air duct in the second air cavity. On the one hand, the smoothness of the air duct is improved to avoid vibration. On the other hand, condensation is not easy to form on the surface of the foam material, which can reduce the situation of dripping of the fan coil indoors. On the one hand, the performance of the foam material is poor, which is conducive to reducing temperature loss. In one embodiment, the foam connection part 1 is made of black EPP foam.

[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A fan assembly for a fan coil unit, the fan coil unit comprising a housing, the housing comprising a partition and a first air cavity located on one side of the partition, the partition being provided with a first through hole, the fan assembly being located in the first air cavity, characterized in that: The fan assembly includes a motor, a first wind shield, a volute and a crossflow fan blade; the motor is fixed to the casing and includes a motor shaft, the first wind shield is arranged on the first through hole and is sealed and connected to the partition, the first wind shield is provided with a second through hole, the volute is sealed and connected to the first wind shield, and the crossflow fan blade is located in the volute and is drivingly connected to the motor shaft.

2. A fan assembly for a fan coil unit according to claim 1, characterized in that: The distance between the second through hole and the partition is 34-38 mm.

3. A fan assembly for a fan coil unit according to claim 1, characterized in that: It also includes a suspension bearing seat and a suspension bearing, wherein the suspension bearing seat is fixed to the box body, the suspension bearing is fixed to the suspension bearing seat, and the suspension bearing is connected to the motor shaft.

4. A fan assembly for a fan coil unit according to claim 1, characterized in that: It also includes a shock-absorbing pad, and the motor is fixed to the box body through the shock-absorbing pad.

5. A fan assembly for a fan coil unit according to claim 1, characterized in that: It also includes a second wind shield, which is disposed on the partition and sealed to the partition, and the motor is also fixed to the second wind shield.

6. A fan assembly for a fan coil unit according to claim 1, characterized in that: The volute is disposed to pass through the second through hole and the first through hole in sequence.

7. A fan assembly for a fan coil unit according to claim 1, characterized in that: It also includes a sealing plate, which is located in the wind shield and fixed to the partition. The sealing plate surrounds the first through hole and is closely attached to the volute.

8. A fan assembly for a fan coil unit according to claim 1, characterized in that: It also includes a coupling and a transmission shaft, wherein the transmission shaft is connected to the motor shaft through the coupling, and the crossflow fan blades are in transmission connection with the transmission shaft.

9. A fan coil unit comprising the fan assembly for a fan coil unit according to any one of claims 1 to 8, characterized in that: The box body is also provided with a second air cavity located on the other side of the partition, and the fan coil unit also includes a coil unit assembly located in the second air cavity.

10. A fan coil unit according to claim 9, characterized in that: The coil assembly includes two coil connecting parts, both of which are sealed and connected to the box body. The fan coil also includes two foam connecting parts, both of which are located in the second air cavity and between the partition and the coil connecting part, and both of which are sealed and connected to the box body and the coil connecting part.

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