Air conditioner connecting pipe with good noise reduction effect

Abstract

The utility model discloses an air conditioner connecting pipe with a good noise reduction effect, which relates to the technical field of air conditioner connecting pipes and comprises an inner pipe and an outer pipe. The outer tube is arranged on the outer side of the inner tube in a sleeving manner, and a tubular melamine foam layer is arranged between the inner tube and the outer tube; according to the connecting pipe for the air conditioner, the double-layer pipe structure of the inner pipe and the outer pipe is arranged, the melamine foam layer is arranged between the inner pipe and the outer pipe, melamine foam has excellent sound absorption performance, internal noise can be effectively prevented from being spread out of the pipe, and the noise reduction effect of the connecting pipe for the air conditioner is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner connecting pipes, in particular to a connecting pipe for an air conditioner with good noise reduction effect. Background Art

[0002] The air conditioner connecting pipe is an important component for connecting the indoor unit and the outdoor unit in the air conditioner system. It is usually made of a copper pipe with good thermal conductivity and ductility. The main function of the connecting pipe is to transmit the refrigerant and transfer the heat generated by the indoor unit for refrigeration or heating to the outdoor unit for exchange.

[0003] A muffler can be connected in series on the air conditioner connecting pipe to reduce noise transmission and the noise of transporting the refrigerant. However, the traditional muffler is relatively large in size. Arranging it outside the machine affects the appearance, and arranging it inside the machine will occupy a certain amount of internal space. In the prior art, the utility model patent of a sound-absorbing connecting pipe and an air conditioner with the application number of CN201920519627.6 sets a sound-absorbing and noise-reducing structure in the air conditioner connecting pipe to achieve the noise reduction effect. However, its noise reduction structure mainly acts on the noise generated by the internal transport medium, and has limited effect on eliminating the noise directly transmitted from the pipe to the outside. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above problems in the prior art and provide a connecting pipe for an air conditioner with good noise reduction effect.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A connecting pipe for an air conditioner with good noise reduction effect, comprising an inner pipe and an outer pipe; the outer pipe is sleeved outside the inner pipe, and a tubular melamine foam layer is provided between the inner pipe and the outer pipe.

[0007] Further, a plurality of sound-absorbing rings are provided in the inner pipe, and the sound-absorbing rings are distributed along the axial direction of the inner pipe.

[0008] Further, the sound-absorbing ring is conical, and the inner ring of the sound-absorbing ring is closer to the upstream of the medium transported by the inner pipe than the outer ring.

[0009] Further, a plurality of sound-absorbing partitions with uniformly distributed through holes are provided in the inner pipe, and the sound-absorbing partitions are distributed along the axial direction of the inner pipe.

[0010] Further, the length of the inner pipe is longer than that of the outer pipe, and both ends of the inner pipe extend out of both ends of the outer pipe; nuts are sleeved outside both ends of the inner pipe, and annular protrusions for limiting the nuts are provided at the port of both ends of the inner pipe.

[0011] Further, both ends of the inner pipe have connecting parts, and the inner diameter of the connecting parts is smaller than the inner diameter of the inner pipe between the two ends of the connecting parts.

[0012] Furthermore, both ends of the outer tube are provided with necking portions, and the inner circumferential side of the necking portion is connected to the outer side of the inner tube.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The connecting pipe for an air conditioner of the present utility model is provided with a double-layer pipe structure of an inner tube and an outer tube. A melamine foam layer is arranged between the inner tube and the outer tube. The melamine foam has excellent sound absorption performance. In combination with the double-layer pipe structure inside and outside, it can effectively block the internal noise from spreading to the outside of the pipe, improving the noise reduction effect of the air conditioner connecting pipe; the melamine foam also has good heat insulation performance and heat and humidity resistance stability, and is suitable for the air conditioner connecting pipe;

[0015] A plurality of sound-absorbing rings and a plurality of sound-absorbing partitions with through holes are arranged on the inner side of the inner tube of the present utility model to achieve resistance sound absorption and microporous sound absorption, reducing the noise of the conveying medium; thus realizing the combination inside and outside to improve the noise reduction effect of the connecting pipe for an air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional structure diagram of the present utility model.

[0017] Figure 2 is a schematic diagram of the exploded state of the present utility model.

[0018] Figure 3 is a schematic external structure diagram of the present utility model.

[0019] Figure 4 is a schematic structure diagram of the sound-absorbing ring of the present utility model.

[0020] Figure 5 is a schematic structure diagram of the sound-absorbing partition of the present utility model.

[0021] In the figure: 1, inner tube; 2, outer tube; 3, melamine foam layer; 4, sound-absorbing ring; 5, sound-absorbing partition; 6, nut; 7, annular protrusion; 101, connecting portion; 201, necking portion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0023] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" that may appear should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the term "provided with" that may appear should be understood in a broad sense. For example, the object of "provided with" may be a part of the body, or it may be arranged separately from the body and connected to the body, and this connection may be a detachable connection or a non-detachable connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] The following further describes the present utility model in detail with reference to embodiments.

[0026] Specific embodiments of the connecting pipe for an air conditioner with good noise reduction effect provided by the present utility model:

[0027] Please refer to Figures 1-5 , a connecting pipe for an air conditioner with good noise reduction effect, including an inner pipe 1 and an outer pipe 2; the outer pipe 2 is sleeved outside the inner pipe 1, the length of the inner pipe 1 is longer than that of the outer pipe 2, and both ends of the inner pipe 1 extend out of both ends of the outer pipe 2; both ends of the inner pipe 1 have connecting portions 101, and the inner diameter of the connecting portions 101 is smaller than the inner diameter of the inner pipe 1 between the connecting portions 101 at both ends of the inner pipe 1, that is, the inner diameter of the middle part of the inner pipe 1 is larger than the inner diameter of the connecting portions 101.

[0028] In this embodiment, the connecting portions 101 with a smaller inner diameter of the inner pipe 1 protrude outside the end of the outer pipe 2, and the middle part with a larger inner diameter of the inner pipe 1 is located inside the outer pipe 2. Nuts 6 are sleeved outside the connecting portions 101 at both ends of the inner pipe 1. The inner side of the nut 6 is conical, the small end of the nut 6 slides axially along the outside of the connecting portion 101 of the inner pipe 1, the large end of the nut 6 is provided with an internal thread, and the nut 6 is used to connect with the pipeline of the indoor unit or the outdoor unit of the air conditioner. Annular protrusions 7 for limiting the nut 6 are provided at the end ports of the connecting portions 101 of the inner pipe 1, and the annular protrusions 7 limit the small end of the nut 6 to prevent the nut 6 from detaching from the outside of the inner pipe 1.

[0029] A tubular melamine foam layer 3 is provided between the inner tube 1 and the outer tube 2; both ends of the outer tube 2 are provided with necked-down portions 201, and the inner ring side of the necked-down portion 201 is connected to the outer side of the inner tube 1. In this embodiment, the inner tube 1 is a copper tube, the outer tube 2 is a PVC tube, and the inner ring side of the necked-down portion 201 of the outer tube 2 is connected to the inner tube 1 by bonding. In some other embodiments, instead of using the bonding method, a hoop can be used to hoop both ends of the outer tube 2 on the outer side of the inner tube 1. In some other embodiments, the outer tube 2 can be made of other anti-corrosion pipe materials.

[0030] In some embodiments, the melamine foam layer 3 is connected to both the inner tube 1 and the outer tube 2 by bonding, improving the connection stability.

[0031] The melamine foam layer 3 has excellent sound absorption performance, which can effectively block the internal noise from spreading to the outside of the tube, improving the noise reduction effect of the air-conditioning connecting pipe; the melamine foam layer 3 also has good heat insulation and moisture and heat stability, and is suitable for the connecting pipe for air-conditioning that requires heat preservation.

[0032] A plurality of sound-absorbing partitions 5 with uniformly distributed through-holes are provided inside the inner tube 1, and the sound-absorbing partitions 5 are distributed along the axial direction of the inner tube 1; the sound-absorbing partitions 5 with through-holes do not affect the conveyance of the medium. In this embodiment, three sound-absorbing partitions 5 are provided, which are respectively located at both ends and the middle of the inner tube 1.

[0033] A plurality of sound-absorbing rings 4 are provided inside the inner tube 1, and the sound-absorbing rings 4 are distributed along the axial direction of the inner tube 1; the sound-absorbing rings 4 are conical, the inner ring of the sound-absorbing ring 4 is closer to the upstream of the medium conveyance of the inner tube 1 than the outer ring, and the inner diameter of the sound-absorbing ring 4 is the same as the inner diameter of the connection part 101 of the inner tube 1, and the medium conveyance efficiency will not be reduced. Two groups of sound-absorbing rings 4 are provided, with four in each group, and the two groups of sound-absorbing rings 4 are respectively located on both sides of the middle sound-absorbing partition 5; the four sound-absorbing rings 4 in each group are arranged at equal intervals.

[0034] Both the sound-absorbing ring 4 and the sound-absorbing partition 5 with uniformly distributed through-holes can reduce the noise generated by the conveyed medium. Cooperating with the melamine foam layer 3, internal and external combined sound absorption and noise reduction are achieved, enabling the air-conditioning connecting pipe to have a better noise reduction effect.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions recorded in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A connecting pipe for an air conditioner with good noise reduction effect, characterized in that: It comprises an inner tube (1) and an outer tube (2); the outer tube (2) is sleeved on the outer side of the inner tube (1), and a tubular melamine foam layer (3) is provided between the inner tube (1) and the outer tube (2).

2. The connecting pipe for air conditioner with good noise reduction effect according to claim 1, characterized in that: A plurality of silencer rings (4) are arranged in the inner tube (1), and the silencer rings (4) are distributed axially along the inner tube (1).

3. The connecting pipe for air conditioner with good noise reduction effect according to claim 2, characterized in that: The silencer ring (4) is conical, and the inner ring of the silencer ring (4) is closer to the upstream of the medium conveyed by the inner tube (1) than the outer ring.

4. The connecting pipe for air conditioner with good noise reduction effect according to claim 1, characterized in that: A plurality of sound-absorbing baffles (5) with evenly distributed through holes are arranged in the inner tube (1), and the sound-absorbing baffles (5) are distributed along the axial direction of the inner tube (1).

5. The connecting pipe for air conditioner with good noise reduction effect according to claim 1, characterized in that: The length of the inner tube (1) is longer than that of the outer tube (2), and the two ends of the inner tube (1) extend out of the two ends of the outer tube (2) respectively; nuts (6) are sleeved on the outer sides of the ends of the inner tube (1), and an annular protrusion (7) for limiting the position of the nut (6) is provided at the end ports of the inner tube (1).

6. The connecting pipe for air conditioner with good noise reduction effect according to claim 1 or 5, characterized in that: Both ends of the inner tube (1) have connecting parts (101), and the inner diameter of the connecting parts (101) is smaller than the inner diameter of the inner tube (1) between the connecting parts (101) at both ends.

7. The connecting pipe for air conditioner with good noise reduction effect according to claim 1, characterized in that: Both ends of the outer tube (2) are provided with a necked portion (201), and the inner ring side of the necked portion (201) is connected to the outer side of the inner tube (1).

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