Muffler for fan coil of central air conditioner

Abstract

The utility model relates to the technical field of fan coil silencers, and discloses a fan coil silencer of a central air conditioner, which comprises a sleeve, a lantern ring is fixedly mounted at the front end of the sleeve, a pipeline penetrates through the inner part of the lantern ring, and a silencing mechanism is arranged on one side of the pipeline; the silencing mechanism comprises an inner ring, the inner ring is fixed to one side of the lantern ring at the front end of the sleeve, a placement groove is formed between the inner ring and the lantern ring, and a first fixing ring penetrates out of the inner ring. According to the silencer based on the central air conditioner fan coil, through the design of the silencing mechanism and the connecting mechanism, the silencing effect can be achieved at the air outlet position of a pipeline, through the methods of sound wave reflection, sound wave absorption, propagation direction changing and the like, the silencing effect can be improved while gas flows out, the situation that silencing is too limited when sound absorbing materials are wrapped is avoided, and the noise reduction effect is improved. And meanwhile, during installation, the device can be suitable for different environments and conditions of installation base layers, and the overall applicability is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of fan coil silencers, specifically a central air conditioning fan coil silencer. Background Technology

[0002] Fan coil units, also known as fan coil units, are one of the terminal devices in air conditioning systems, consisting of a small fan, an electric motor, and a coil (air heat exchanger). When chilled water or hot water flows through the coil, it exchanges heat with the air outside the coil, thus cooling, dehumidifying, or heating the air to regulate indoor air parameters. They are commonly used terminal devices for cooling and heating. Because fan coil units are often used in places with high requirements for indoor environmental comfort, such as hotels, hospitals, office buildings, and residences, the rotation of the fan and the airflow in the duct will generate a certain amount of noise during operation. Noise reduction equipment is needed to create a quiet and comfortable indoor environment.

[0003] In the field of coil silencers, existing methods typically involve simply covering the outer wall of the pipe with sound-absorbing material to achieve a sound-absorbing effect. However, this method only reduces the noise level during the sound absorption process, and the gas still generates noise during flow, thus affecting the surrounding environment and its comfort. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Given that the aforementioned or existing technologies can only mitigate the effect, the gas flow still generates noise, thus affecting the surrounding environment and impacting environmental comfort.

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

[0007] A silencer for a central air conditioning fan coil unit, characterized in that it comprises:

[0008] A sleeve, wherein a collar is fixedly installed at the front end of the sleeve, and a pipe extends through the inside of the collar, and a sound-absorbing mechanism is provided on one side of the pipe;

[0009] The silencing mechanism includes an inner ring, which is fixed to one side of the sleeve front end ring, and a mounting groove is provided between the inner ring and the sleeve. A first fixing ring extends through the inside of the inner ring, and a second fixing ring extends through one end of the sleeve. Filter screens are embedded inside the first and second fixing rings.

[0010] As a further embodiment of this utility model: a first perforated plate is embedded inside the first fixing ring, and a second perforated plate is embedded on one side of the first perforated plate inside the first fixing ring, and a honeycomb sound-absorbing plate is embedded on the other side of the second perforated plate inside the first fixing ring.

[0011] As a further improvement of this utility model: the sleeve is fitted with an anti-sound muffler, and the inner wall of the sleeve is fitted with sound insulation cotton.

[0012] As a further improvement of this utility model: the sleeve has a slot on its outside, and a connecting mechanism is provided inside the slot.

[0013] As a further embodiment of this utility model: the connecting mechanism includes a through rod that extends out of the inside of the slot, and a locking block is fixedly installed at one end of the through rod located inside the slot.

[0014] As a further embodiment of this utility model: a sleeve block is sleeved on the top of the protruding rod, and an abutment plate is fixedly installed on the top of the sleeve block, and connecting plates are embedded on both sides of the outer wall of the abutment plate.

[0015] As a further improvement of this utility model: a first rubber pad is fixedly installed at the top of the contact plate, and a second rubber pad is fixedly installed at the bottom of the locking block.

[0016] As a further improvement of this utility model: a limiting plate is fixedly installed at one end of the through rod that passes through the sleeve block, and a damping spring is embedded at the top of the limiting plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model, through the design of the silencing mechanism and the connecting mechanism, can achieve a silencing effect from the air outlet of the duct. By means of sound wave reflection, sound wave absorption and changing the direction of propagation, it can improve the silencing effect while allowing the gas to flow out, avoiding the silencing effect being too limited when covering sound-absorbing materials. At the same time, it can be applied to different environments and installation base conditions during installation, improving the overall applicability. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of a central air conditioning fan coil unit silencer;

[0020] Figure 2 A schematic diagram of the filter screen structure of a central air conditioning fan coil unit silencer;

[0021] Figure 3 A schematic diagram of the second perforated plate structure of a central air conditioning fan coil unit silencer;

[0022] Figure 4 A schematic diagram of a reactive silencer structure for a central air conditioning fan coil unit silencer;

[0023] Figure 5 A schematic plan view of the sleeve cross-section of a central air conditioning fan coil unit silencer;

[0024] Figure 6 This is a schematic diagram of the damping spring structure of a central air conditioning fan coil unit silencer.

[0025] In the diagram: 1. Sleeve; 2. Collar; 3. Pipe; 4. Silencing mechanism; 401. Inner ring; 402. Installation groove; 403. First fixing ring; 404. Second fixing ring; 405. Filter screen; 406. First perforated plate; 407. Second perforated plate; 408. Honeycomb sound-absorbing plate; 409. Resistant silencer; 410. Sound insulation cotton; 5. Slot; 6. Connecting mechanism; 601. Through rod; 602. Locking block; 603. Sleeve block; 604. Contact plate; 605. Connecting plate; 606. First rubber pad; 607. Second rubber pad; 608. Limiting plate; 609. Damping spring. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0029] Example 1

[0030] Please see Figures 1 to 5 This is the first embodiment of the present utility model. This embodiment provides a central air conditioning fan coil silencer, including: a sleeve 1, a collar 2 fixedly installed at the front end of the sleeve 1, a pipe 3 passing through the inside of the collar 2, and a silencing mechanism 4 provided on one side of the pipe 3.

[0031] The silencing mechanism 4 includes an inner ring 401, which is fixed to one side of the front end collar 2 of the sleeve 1. A mounting groove 402 is provided between the inner ring 401 and the collar 2. A first fixing ring 403 extends through the inside of the inner ring 401, and a second fixing ring 404 extends through one end of the sleeve 1. A filter screen 405 is embedded inside the first fixing ring 403 and the second fixing ring 404.

[0032] Specifically, a first perforated plate 406 is embedded inside the first fixing ring 403, a second perforated plate 407 is embedded on one side of the first perforated plate 406 inside the first fixing ring 403, and a honeycomb sound-absorbing plate 408 is embedded on the other side of the second perforated plate 407 inside the first fixing ring 403.

[0033] Furthermore, through the multi-layer perforation, the aperture of the second perforated plate 407 is larger than that of the first perforated plate 406. By combining different apertures, the airflow speed and sound wave propagation path can be changed, thereby achieving a noise reduction effect. In conjunction with the honeycomb sound-absorbing plate 408, it can achieve a sound absorption effect while maintaining airflow.

[0034] Specifically, the sleeve 1 is fitted with a resistive silencer 409, and the inner wall of the sleeve 1 is fitted with sound insulation cotton 410.

[0035] Furthermore, by using the embedded reactive silencer 409, the abrupt change in the cross-section of the pipe 3 or the structure of the bypass resonant cavity can cause sound to reflect and interfere during propagation, thereby reducing noise. In conjunction with the sound insulation cotton 410, the overall coverage further improves the noise reduction effect.

[0036] In use, the collar 2 and inner ring 401 fixed on one side of the sleeve 1 form a mounting groove 402. At the same time, the inside of the collar 2 is threadedly connected to the pipe 3, which facilitates disassembly and assembly. The filter screen 405 embedded in the first fixed ring 403 and the second fixed ring 404 can filter the flowing gas. In conjunction with the first perforated plate 406 and the second perforated plate 407, it can slow down the gas flow rate and propagation path to achieve a noise reduction effect. At the same time, with the cooperation of the honeycomb sound-absorbing plate 408 and the sound insulation cotton 410, it can further absorb sound waves to achieve a noise reduction effect. Finally, with the cooperation of the reactive silencer 409, it can reflect sound to achieve a noise reduction effect.

[0037] In summary, firstly, the cooperation between the collar 2 and the inner ring 401 allows the sleeve 1 to be quickly disassembled and assembled with the pipe 3, facilitating cleaning and maintenance after disassembly. Secondly, with multiple noise reduction processes, the fan coil unit can achieve comprehensive noise reduction and silence reduction through various means such as sound wave reflection, changing the direction of propagation, and sound wave absorption, thereby controlling noise generation and avoiding affecting the comfort of the surrounding environment.

[0038] Example 2

[0039] Please see Figure 1 , Figure 4 and Figure 6 This is the second embodiment of the present invention, which provides an improved design for a central air conditioning fan coil unit silencer.

[0040] Specifically, the sleeve 1 has a slot 5 on its outside, and a connecting mechanism 6 is provided inside the slot 5.

[0041] Furthermore, the slot 5 allows the connecting mechanism 6 to adjust its position according to the rotation of the sleeve 1, avoiding excessive restrictions during use and ensuring the muffler is securely fixed.

[0042] Specifically, the connecting mechanism 6 includes a through rod 601 that extends out of the inside of the slot 5, and a locking block 602 is fixedly installed at one end of the through rod 601 located inside the slot 5.

[0043] Furthermore, the through rod 601 is slidably engaged with the slot 5 via the locking block 602, allowing it to rotate around the sleeve 1. This enables the through rod 601 to flexibly adjust its position when the sleeve 1 is spliced ​​and fixed to the pipe 3, and allows the sleeve 1 to be fixed according to the specific conditions on site after the sleeve 1 and the pipe 3 are fixed.

[0044] Specifically, a sleeve block 603 is sleeved on the top of the through rod 601, and an abutment plate 604 is fixedly installed on the top of the sleeve block 603. Connecting plates 605 are embedded on both sides of the outer wall of the abutment plate 604.

[0045] Furthermore, by forming a telescopic structure with the through rod 601 and the sleeve block 603, the position can be adjusted according to the location of the base layer to be installed on site, so that the contact plate 604 can easily contact the base layer to be installed, and is fixed by bolts through the reserved holes of the connecting plate 605. This makes it suitable for different environments and improves the comprehensiveness and flexibility of the entire setup.

[0046] Specifically, a first rubber pad 606 is fixedly installed at the top of the contact plate 604, and a second rubber pad 607 is fixedly installed at the bottom of the locking block 602.

[0047] Furthermore, the contact plate 604 and the locking block 602 are respectively bonded with a first rubber pad 606 and a second rubber pad 607, which can prevent collisions and noise during sliding and fixing.

[0048] Specifically, a limiting plate 608 is fixedly installed at one end of the through rod 601 that passes through the sleeve block 603, and a damping spring 609 is embedded at the top of the limiting plate 608.

[0049] Furthermore, the through rod 601, through the limiting plate 608, prevents the sleeve block 603 from sliding excessively and disengaging from each other, and through the damping spring 609, it can play an elastic pushing effect. If vibration or shaking occurs, the elastic contraction of the damping spring 609 plays a certain energy dissipation effect.

[0050] In use, after the sleeve 1 and pipe 3 are assembled, the rod 601 slides out through the slot 5 and the locking block 602, allowing the sleeve block 603 to drive the contact plate 604 to find a suitable installation base, such as a ceiling or wall. At the same time, it is fixed by the reserved hole and bolts of the connecting plate 605, thereby fixing the sleeve 1 and improving the stability of the connection with the pipe 3. Meanwhile, the first rubber pad 606 and the second rubber pad 607 prevent noise caused by shaking and collision. At the same time, the cooperation of the limiting plate 608 and the damping spring 609 prevents the sleeve block 603 from detaching from the rod 601, and the damping spring 609 can dissipate energy when subjected to vibration, avoiding excessive shaking or collision noise.

[0051] In summary, the damping spring 609 allows the through rod 601 and the sleeve block 603 to slide and extend while maintaining an elastic connection. It can be adjusted according to the position of the sleeve 1, thereby fixing it to the mounting base and improving the overall applicability and versatility. At the same time, when vibration or shaking occurs, the first rubber pad 606, the second rubber pad 607, and the damping spring 609 prevent them from colliding and causing noise, and also play a certain role in energy dissipation.

[0052] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0053] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0054] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A silencer for a central air conditioning fan coil unit, characterized in that: include: Sleeve (1), a collar (2) is fixedly installed at the front end of the sleeve (1), and a pipe (3) extends through the inside of the collar (2), and a sound-absorbing mechanism (4) is provided on one side of the pipe (3). The silencing mechanism (4) includes an inner ring (401), which is fixed to one side of the front end collar (2) of the sleeve (1), and a mounting groove (402) is provided between the inner ring (401) and the collar (2). A first fixing ring (403) extends through the inside of the inner ring (401), and a second fixing ring (404) extends through one end of the sleeve (1). A filter screen (405) is embedded inside the first fixing ring (403) and the second fixing ring (404).

2. The silencer for a central air conditioning fan coil unit according to claim 1, characterized in that: The first fixing ring (403) is fitted with a first perforated plate (406), and a second perforated plate (407) is fitted on one side of the first perforated plate (406) inside the first fixing ring (403), and a honeycomb sound-absorbing plate (408) is fitted on the other side of the second perforated plate (407) inside the first fixing ring (403).

3. A central air conditioning fan coil unit silencer according to claim 1, characterized in that: The sleeve (1) is fitted with a resistive silencer (409) inside, and the inner wall of the sleeve (1) is fitted with sound insulation cotton (410).

4. A central air conditioning fan coil unit silencer according to claim 1, characterized in that: The sleeve (1) has a slot (5) on its outside, and a connecting mechanism (6) is provided inside the slot (5).

5. A central air conditioning fan coil unit silencer according to claim 4, characterized in that: The connecting mechanism (6) includes a through rod (601) that extends out of the inside of the slot (5), and a locking block (602) is fixedly installed at one end of the through rod (601) located inside the slot (5).

6. A central air conditioning fan coil unit silencer according to claim 5, characterized in that: The top end of the through rod (601) is fitted with a sleeve block (603), and the top end of the sleeve block (603) is fixedly installed with an abutment plate (604). The outer walls of the abutment plate (604) are fitted with connecting plates (605) on both sides.

7. A central air conditioning fan coil unit silencer according to claim 6, characterized in that: The top of the contact plate (604) is fixedly installed with a first rubber pad (606), and the bottom of the locking block (602) is fixedly installed with a second rubber pad (607).

8. A central air conditioning fan coil unit silencer according to claim 6, characterized in that: The end of the through rod (601) that passes through the sleeve block (603) is fixedly installed with a limiting plate (608), and a damping spring (609) is embedded at the top of the limiting plate (608).

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