Noise reduction device of fan coil

Abstract

The utility model discloses a noise reduction device of a fan coil, which comprises a sliding device and a noise reduction device, and the sliding device is arranged above the noise reduction device; the noise reduction device comprises a noise reduction box and a sound absorption sponge, the noise reduction box is used for being installed on a shell of the fan coil, a turbine on the fan coil is located in the noise reduction box, and the sound absorption sponge is arranged on the inner wall of the noise reduction box; the sliding device comprises a pulling plate and a driving mechanism, the driving mechanism is connected with a remote control end through a controller, an air inlet is formed in the noise reduction box, the pulling plate is arranged on the noise reduction box in a sliding mode and used for covering the air inlet, the pulling plate is connected with the driving mechanism, and the driving mechanism is used for controlling the pulling plate to move back and forth on the noise reduction box. The fan coil aims at solving the problem that in the prior art, when noise reduction is conducted on a fan coil, the air outlet quality of the fan coil is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of fan coil units, in particular to a noise reduction device for fan coil units. Background Art

[0002] The fan coil unit is referred to as a fan coil. It is one of the terminal devices of the air conditioning system, which consists of a small fan, a motor and a coil (air heat exchanger). When chilled water or hot water flows through the coil tube, it exchanges heat with the air outside the tube, so that the air is cooled, dehumidified or heated to adjust the indoor air parameters. It is a commonly used cooling and heating terminal device.

[0003] When the fan coil unit in the prior art is in operation, the turbine in the fan coil unit keeps running, and a lot of noise is generated after the turbine runs, and the noise affects the rest of the user.

[0004] The utility model patent with application number: CN202021390942.2 and announcement number: CN213273172U (hereinafter referred to as "prior art 1") discloses a central air-conditioning fan coil noise reduction device, comprising an air-conditioning fan body and a fan coil body, the fan coil body being installed on the right side of the air-conditioning fan body, an inner layer of an annular structure being provided in the fan coil body, an outer layer being installed outside the inner layer, a plurality of noise reduction plates being installed on the upper and lower end surfaces of the inner wall of the inner layer, and the noise reduction plates being a honeycomb structure, a first connecting flange being installed on the right end of the fan coil body, an air outlet being installed on the right side of the first connecting flange, a second connecting flange being installed on the end surface of the air outlet and close to the first connecting flange, and a silencer being installed on the side wall of the air inlet cavity in the air outlet.

[0005] The specification of prior art 1 discloses a noise reduction device for a central air-conditioning fan coil unit, which arranges a plurality of noise reduction plates on the inner layer of the fan coil unit so that the decibel value of the noise can be weakened by the rebound of the noise reduction plates. However, in actual application, the noise reduction plates will cause the wind blown out by the air-conditioning fan to be blocked by the noise reduction plates, thereby affecting the air volume of the fan coil unit. Summary of the invention

[0006] The utility model provides a noise reduction device for a fan coil unit, aiming to solve the problem in the prior art that the air quality of the fan coil unit will be affected when the noise is reduced.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A noise reduction device for a fan coil unit, comprising a sliding device and a noise reduction device, wherein the sliding device is installed above the noise reduction device;

[0009] The noise reduction device includes a noise reduction box and a sound absorbing sponge. The noise reduction box is used to be installed on the outer shell of the fan coil unit. The turbine on the fan coil unit is located inside the noise reduction box. The sound absorbing sponge is arranged on the inner wall of the noise reduction box.

[0010] The sliding device includes a pull plate and a driving mechanism. The driving mechanism is connected to the remote control end through a controller. An air inlet is provided on the noise reduction box. The pull plate is slidably arranged on the noise reduction box and is used to cover the air inlet. The pull plate is connected to the driving mechanism. The driving mechanism is used to control the pull plate to make a reciprocating motion on the noise reduction box.

[0011] Furthermore, the pull plate is slidably arranged on the noise reduction box through a sliding assembly.

[0012] Furthermore, the sliding assembly includes a sliding track arranged on the noise reduction box and a sliding groove arranged on the pull plate, the sliding groove is used to be mutually engaged with the sliding track, and the sliding groove and the sliding track are slidably matched.

[0013] Furthermore, the driving mechanism includes a motor, a rotating rod, a gear and a rack. The fixed end of the motor is installed on the noise reduction box. One end of the rotating rod is fixedly connected to the output shaft of the motor, and the other end is rotatably matched with the noise reduction box. The gear is fixedly set on the rotating rod; a mounting groove is provided on the pull plate, and a waist-shaped through groove is provided on the noise reduction box. The rack is fixedly installed inside the mounting groove, and the gear is used to pass through the waist-shaped through groove and then engage with the rack.

[0014] Furthermore, the number of the gear, the mounting groove, the waist-shaped through groove and the rack is two.

[0015] Furthermore, a bearing seat is also provided on the noise reduction box, and the rotating rod is rotationally matched with the noise reduction box through the bearing seat.

[0016] Furthermore, mounting plates are provided on both sides of the noise reduction box, the fixed end of the motor is fixedly provided on the mounting plate on one side, and the bearing seat is fixedly provided on the mounting plate on the other side.

[0017] Furthermore, a dustproof net is provided at the position of the air inlet.

[0018] Furthermore, a plurality of sound absorbing holes are arranged on the sound absorbing sponge.

[0019] Furthermore, the sound-absorbing sponge has a wavy structure.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model mainly comprises a sliding device and a noise reduction device, and the sliding device is installed above the noise reduction device; in actual use, the noise reduction box is installed on the outer shell of the fan coil unit and covers the turbine on the fan coil unit. When the turbine is started, the pull plate is pulled open to allow the air inlet to leak out, so that fresh air can enter the noise reduction box from the air inlet, and the noise emitted by the turbine will be absorbed by the sound-absorbing sponge on the inner wall of the noise reduction box, which can greatly reduce the noise; when the turbine is turned off, the pull plate can be pulled, and at this time the pull plate slides on the noise reduction box until the pull plate completely covers the air inlet, and then the pulling of the pull plate is stopped, which can prevent external dust and debris from entering the noise reduction box and adhering to the sound-absorbing sponge, resulting in poor noise reduction effect of the sound-absorbing sponge. The most important thing is to reduce the noise of the turbine at the rear of the fan coil unit, which not only reduces the noise, but also does not affect the air outlet effect of the fan coil unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a structural schematic diagram of the fan coil unit in the utility model.

[0025] Figure 3 It is a schematic diagram of the connection relationship between the sound-absorbing sponge and the noise reduction box of the utility model.

[0026] Figure 4 It is a schematic diagram of the connection relationship between the sliding device and the noise reduction box of the utility model.

[0027] Figure 5 For this utility model Figure 3 A partial enlarged view of point A in the middle.

[0028] Figure 6 For this utility model Figure 4 A partial enlarged view of point B in the middle.

[0029] In the figure, 101-noise reduction box, 102-sound absorbing sponge, 103-housing, 104-turbine, 105-air inlet, 106-sliding track, 107-sliding groove, 108-motor, 109-rotating rod, 110-gear, 111-rack, 112-installation groove, 113-waist-shaped through groove, 114-bearing seat, 115-installation plate, 116-dustproof net, 117-sound absorbing hole, 118-pull plate. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the embodiments, which are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in the field without creative work are all within the protection scope of the present invention.

[0031] Embodiment 1

[0032] See also Figure 1-Figure 6 As shown, this embodiment discloses a noise reduction device for a fan coil unit, including a sliding device and a noise reduction device, wherein the sliding device is installed above the noise reduction device;

[0033] The noise reduction device includes a noise reduction box 101 and a sound absorbing sponge 102. The noise reduction box 101 is used to be installed on a housing 103 of a fan coil unit. A turbine 104 on the fan coil unit is located inside the noise reduction box 101. The sound absorbing sponge 102 is arranged on the inner wall of the noise reduction box 101.

[0034] The sliding device includes a pull plate 118 and a driving mechanism, the driving mechanism is connected to the remote control end through a controller, the noise reduction box 101 is provided with an air inlet 105, the pull plate 118 is slidably arranged on the noise reduction box 101 and is used to cover the air inlet 105, the pull plate 118 is connected to the driving mechanism, and the driving mechanism is used to control the pull plate 118 to make a reciprocating motion on the noise reduction box 101;

[0035] The utility model mainly comprises a sliding device and a noise reduction device, wherein the sliding device is installed above the noise reduction device; in actual use, the noise reduction box 101 is installed on the housing 103 on the fan coil unit to cover the turbine 104 on the fan coil unit, and when the turbine 104 is started, the pull plate 119 is pulled open to allow the air inlet 105 to leak out, so that fresh air can enter the noise reduction box 101 from the air inlet 105, and the noise emitted by the turbine 104 will be absorbed by the sound-absorbing sponge 102 on the inner wall of the noise reduction box 101, which can greatly reduce the noise generated by the turbine 104. The noise can be reduced to the greatest extent; when the turbine 104 is turned off, the pull plate 118 can be pulled, and the pull plate 118 slides on the noise reduction box 101 until the pull plate 118 completely covers the air inlet 105 and then stops pulling the pull plate 118. This can prevent external dust and debris from entering the noise reduction box 101 and adhering to the sound-absorbing sponge 102, causing the noise reduction effect of the sound-absorbing sponge 102 to deteriorate. The most important thing is to reduce the noise of the turbine 104 at the rear of the fan coil unit, which not only reduces the noise, but also does not affect the air outlet effect of the fan coil unit.

[0036] In some embodiments, the pull plate 118 is slidably disposed on the noise reduction box 101 via a sliding assembly.

[0037] In actual use, the function of the sliding assembly is to ensure that the sliding between the pull plate 118 and the noise reduction box 101 is smoother.

[0038] In some embodiments, the sliding assembly includes a sliding rail 106 disposed on the noise reduction box 101 and a sliding groove 107 disposed on the pull plate 118 , and the sliding groove 107 is used to engage with the sliding rail 106 , and the sliding groove 107 and the sliding rail 106 are slidably matched.

[0039] In actual use, the sliding groove 107 is buckled on the sliding track 106, so that the pull plate 118 reciprocates on the noise reduction box 101. The advantage of this arrangement is that the sliding between the pull plate 118 and the noise reduction box 101 is more stable.

[0040] In some embodiments, the driving mechanism includes a motor 108, a rotating rod 109, a gear 110 and a rack 111. The fixed end of the motor 108 is installed on the noise reduction box 101. One end of the rotating rod 109 is fixedly connected to the output shaft of the motor 108, and the other end is rotatably matched with the noise reduction box 101. The gear 110 is fixedly set on the rotating rod 109; the pull plate 118 is provided with a mounting groove 112, and the noise reduction box 101 is provided with a waist-shaped through groove 113. The rack 111 is fixedly installed inside the mounting groove 112, and the gear 110 is used to pass through the waist-shaped through groove 113 and then engage with the rack 111.

[0041] During actual use, the staff drives the motor 108 to start. After the motor 108 starts, it drives the rotating rod 109 to rotate. Since the gear 110 is fixedly connected to the rotating rod 109, the motor 108 drives the gear 110 to rotate synchronously after it rotates. After the gear 110 rotates, it meshes with the rack 111. The motor 108 rotates forward or reversely to control the pull plate 118 to reciprocate on the noise reduction box 101.

[0042] It should be noted that the remote control end in this embodiment is a remote control, and in this embodiment the remote control is only an optional implementation in this embodiment. The remote control end may also be a remote control panel or a smart phone. This embodiment does not involve improvements to the structure of the remote control end. The rotation of the remote control motor 108 is a prior art and will not be described in detail here.

[0043] In some embodiments, the number of the gear 110 , the mounting slot 112 , the waist-shaped through slot 113 , and the rack 111 are all two.

[0044] In actual use, the gear 110 is located on both sides of the air inlet 105, and the positions of the mounting groove 112, the waist-shaped through groove 113 and the rack 111 correspond to the positions of the gears 110 on both sides. One gear 110 is paired with one mounting groove 112, one waist-shaped through groove 113 and one rack 111; the purpose of setting two is to make the pull plate 118 more stable during the reciprocating motion.

[0045] In some embodiments, a bearing seat 114 is further provided on the noise reduction box 101 , and the rotating rod 109 is rotatably matched with the noise reduction box 101 through the bearing seat 114 .

[0046] In actual use, the purpose of providing the bearing seat 114 is to make the rotating rod 109 rotate more smoothly, reduce the rotational friction between the rotating rod 109 and the noise reduction box 101, and extend the service life of the rotating rod 109.

[0047] In some embodiments, mounting plates 115 are provided on both sides of the noise reduction box 101, the fixed end of the motor 108 is fixedly provided on the mounting plate 115 on one side, and the bearing seat 114 is fixedly provided on the mounting plate 115 on the other side.

[0048] In actual use, the mounting plate 115 is provided to mount the motor 108 and the bearing seat 114 .

[0049] In some embodiments, a dustproof net 116 is provided at the position of the air inlet 105 , and the dustproof net 116 is provided to prevent external dust and debris from entering into the noise reduction box 101 .

[0050] In some embodiments, a plurality of sound absorbing holes 117 are disposed on the sound absorbing sponge 102 .

[0051] In actual use, the purpose of the sound-absorbing holes 117 is to further improve the noise absorption effect of the sound-absorbing sponge 102 .

[0052] Embodiment 2

[0053] See also Figure 1-Figure 6 As shown, this embodiment is further optimized on the basis of the first embodiment. In this embodiment, the sound-absorbing sponge 102 is a wave-shaped structure;

[0054] During actual use, the sound-absorbing sponge 102 with a wavy structure can also reduce a portion of the noise through the rebound of the wavy plane, which can make the noise reduction effect of the sound-absorbing sponge 102 better.

[0055] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0057] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction device for a fan coil unit, characterized in that: It includes a sliding device and a noise reduction device, wherein the sliding device is installed above the noise reduction device; The noise reduction device comprises a noise reduction box (101) and a sound absorbing sponge (102); the noise reduction box (101) is used to be installed on a housing (103) of a fan coil unit; a turbine (104) on the fan coil unit is located inside the noise reduction box (101); and the sound absorbing sponge (102) is arranged on the inner wall of the noise reduction box (101); The sliding device comprises a pull plate (118) and a driving mechanism, wherein the driving mechanism is connected to a remote control terminal via a controller, an air inlet (105) is provided on the noise reduction box (101), the pull plate (118) is slidably arranged on the noise reduction box (101) and is used to cover the air inlet (105), the pull plate (118) is connected to the driving mechanism, and the driving mechanism is used to control the pull plate (118) to perform a reciprocating motion on the noise reduction box (101).

2. A noise reduction device for a fan coil unit according to claim 1, characterized in that: The pull plate (118) is slidably arranged on the noise reduction box (101) via a sliding assembly.

3. A noise reduction device for a fan coil unit according to claim 2, characterized in that: The sliding assembly comprises a sliding track (106) arranged on the noise reduction box (101) and a sliding groove (107) arranged on the pull plate (118); the sliding groove (107) is used to be mutually engaged with the sliding track (106); the sliding groove (107) and the sliding track (106) are slidably matched.

4. A noise reduction device for a fan coil unit according to claim 1, characterized in that: The driving mechanism comprises a motor (108), a rotating rod (109), a gear (110) and a rack (111); the fixed end of the motor (108) is mounted on the noise reduction box (101); one end of the rotating rod (109) is fixedly connected to the output shaft of the motor (108), and the other end is rotationally matched with the noise reduction box (101); the gear (110) is fixedly arranged on the rotating rod (109); a mounting groove (112) is provided on the pull plate (118); a waist-shaped through groove (113) is provided on the noise reduction box (101); the rack (111) is fixedly arranged inside the mounting groove (112); and the gear (110) is used to pass through the waist-shaped through groove (113) and then mesh with the rack (111).

5. A noise reduction device for a fan coil unit according to claim 4, characterized in that: The number of the gear (110), the mounting groove (112), the waist-shaped through groove (113) and the rack (111) is two.

6. A noise reduction device for a fan coil unit according to claim 4, characterized in that: A bearing seat (114) is also provided on the noise reduction box (101), and the rotating rod (109) is rotatably matched with the noise reduction box (101) through the bearing seat (114).

7. A noise reduction device for a fan coil unit according to claim 6, characterized in that: Mounting plates (115) are provided on both sides of the noise reduction box (101), a fixed end of the motor (108) is fixedly provided on the mounting plate (115) on one side, and a bearing seat (114) is fixedly provided on the mounting plate (115) on the other side.

8. The noise reduction device for a fan coil unit according to claim 1, characterized in that: A dustproof net (116) is provided at the position of the air inlet (105).

9. A noise reduction device for a fan coil unit according to claim 1, characterized in that: A plurality of sound absorbing holes (117) are arranged on the sound absorbing sponge (102).

10. A noise reduction device for a fan coil unit according to claim 1, characterized in that: The sound-absorbing sponge (102) has a wave-like structure.

Images