Air conditioning unit sound absorbing cotton installation device and railway vehicle air conditioning unit

Abstract

The utility model relates to a kind of sound-absorbing cotton mounting device of air conditioning unit and railway vehicle air conditioning unit, sound-absorbing cotton is pasted on the shell of air conditioning unit, the sound-absorbing cotton is also fixed on shell by several heat preservation nails, the heat preservation nail is composed of panel and nail rod, pressure plate is installed on the panel, the pressure plate is fixedly connected with shell by the nail rod and utilizes pressure plate to press the panel tightly fixed on shell, the nail tip part of the heat preservation nail passes through sound-absorbing cotton and is fixed by nail cap.The utility model sound-absorbing cotton is fixed by back glue and heat preservation nail with shell, provides the function of secondary protection to sound-absorbing cotton, can ensure the stability and reliability of sound-absorbing cotton installation, guarantee the noise reduction effect of air conditioning unit, simultaneously, since heat preservation nail and shell do not need to be fixed by fastener or by the mode of welding additionally, the fixed installation and replacement of heat preservation nail can be facilitated, improve installation and replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning unit installation technology, and in particular to an air conditioning unit sound-absorbing cotton installation device and a rail vehicle air conditioning unit. Background Technology

[0002] Rail vehicles are generally equipped with integrated unit-type air conditioning units. These units are divided into indoor and outdoor chambers by a central partition. Components such as the evaporator and blower are installed in the indoor chamber, while the compressor, condenser, and condenser fan are installed in the outdoor chamber. To reduce noise and improve passenger comfort, a layer of sound-absorbing cotton is usually attached to the inner wall of the unit's casing. This cotton typically has adhesive backing. However, the cotton's fixation relies heavily on the adhesive. Over time, the adhesive may fail, causing the cotton to detach or shift, thus affecting the air conditioning's noise reduction effect. Summary of the Invention

[0003] The main technical problem solved by this utility model is to provide an air conditioning unit sound-absorbing cotton installation device that can provide secondary protection for sound-absorbing cotton, effectively prevent the sound-absorbing cotton from falling off and shifting, and ensure the noise reduction effect of the air conditioning unit. At the same time, it also provides a rail vehicle air conditioning unit using the air conditioning unit sound-absorbing cotton installation device.

[0004] To solve the aforementioned technical problem, the basic concept of the technical solution adopted by this utility model is as follows:

[0005] An air conditioning unit sound-absorbing cotton installation device is disclosed. The sound-absorbing cotton is pasted onto the housing of the air conditioning unit. The sound-absorbing cotton is also fixed to the housing by a number of insulation nails. Each insulation nail consists of a panel and a nail rod. A pressure plate is installed on the panel. The pressure plate passes through the nail rod and is fixedly connected to the housing. The pressure plate is used to press and fix the panel to the housing. The tip of the insulation nail passes through the sound-absorbing cotton and is fixed by the nail head.

[0006] Furthermore, the pressure plate is riveted and fixed to the housing.

[0007] Furthermore, the pressure plate has a central through hole through which the nail rod passes. The diameter of the central through hole is smaller than the diameter of the panel. A rivet is provided on each side of the central through hole to fix it to the housing. The mounting point of the rivet is located on the outer side of the panel.

[0008] Furthermore, the nail head is a disc shape with an arc-shaped top and a diameter of 10-40mm. It has a central inner hole at the center of the disc, the diameter of which is slightly smaller than the diameter of the nail shank. Multiple installation slots are arranged radially around the central inner hole.

[0009] Furthermore, the multiple insulation nails are arranged at equal intervals along the horizontal and vertical directions on the shell.

[0010] Furthermore, an anti-reverse structure is provided on the nail rod.

[0011] Furthermore, the anti-reverse structure consists of multiple umbrella-shaped barbs disposed on the nail rod, the multiple barbs being arranged sequentially along the length direction of the nail rod, and the barbs and the nail rod being integrally made of the same metal material.

[0012] Furthermore, a recessed receiving cavity is provided on one side of the pressure plate. The shape and size of the receiving cavity match the panel of the insulation nail, and the panel is embedded in the receiving cavity during installation.

[0013] The basic concept of another technical solution adopted in this utility model is:

[0014] An air conditioning unit for rail vehicles includes a housing, with a layer of sound-absorbing cotton fixed to the inner surface of the housing. The sound-absorbing cotton is fixed to the housing by the mounting device described above.

[0015] In summary, the sound-absorbing cotton installation device for air conditioning units and the air conditioning unit for rail vehicles provided by this utility model have the following advantages compared with the prior art:

[0016] (1) In addition to being fixed to the shell by adhesive backing, the sound-absorbing cotton of this utility model is also fixed to the shell by several heat-insulating nails, which provides secondary protection for the sound-absorbing cotton, ensuring the stability and reliability of the sound-absorbing cotton installation, effectively preventing the sound-absorbing cotton from falling off and shifting during long-term use, and ensuring the noise reduction effect of the air conditioning unit of the rail vehicle.

[0017] (2) The insulation nails in this utility model are fixed to the shell by pressing with a pressure plate, thus providing insulation.

[0018] No additional fasteners or welding are needed to fix the nails to the shell. This not only facilitates the fixing, installation, and replacement of the insulation nails, improving installation and replacement efficiency, but also ensures the fixing effect of the insulation nails, ensuring that the insulation nails will not move after installation and guaranteeing the sound absorption effect of the sound-absorbing cotton.

[0019] (3) In this utility model, the insulation nail does not need to be fixedly connected to the shell, but is fixed only by a pressure plate, so that the installation device can be applied to shells of different materials and has strong versatility.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] In the attached diagram:

[0023] Figure 1 This is an exploded view of the structure of Embodiment 1 of the installation device of this utility model;

[0024] Figure 2 This is a structural assembly drawing of Embodiment 1 of the installation device of this utility model.

[0025] In the picture:

[0026] 1. Sound-absorbing cotton, 2. Shell, 3. Insulation nail, 31. Panel, 32. Nail rod, 33. Nail tip, 4. Nail head, 41. Central inner hole, 42. Mounting seam, 5. Pressure plate, 51. Central through hole, 52. Mounting hole, 6. Rivet.

[0027] It should be noted that the accompanying drawings and text description are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Example 1:

[0032] like Figure 1 and Figure 2 As shown, this utility model provides a sound-absorbing cotton installation device for air conditioning units, applicable to air conditioning units in rail vehicles. The air conditioning unit includes a housing, within which an indoor cavity and an outdoor cavity are separated by a partition. A layer of sound-absorbing cotton is installed on the inner surface of the housing to reduce the noise generated during operation of the air conditioning unit, thereby improving passenger comfort. This sound-absorbing cotton installation device is used to fix the sound-absorbing cotton 1 to the inner surface of the air conditioning unit housing 2.

[0033] The air conditioning unit sound-absorbing cotton installation device provided in this embodiment includes a sound-absorbing cotton 1 with adhesive backing, which is fixed to the inner surface of the air conditioning unit housing 2 by adhesive bonding. The sound-absorbing cotton 1 is also simultaneously fixed to the housing 2 by several thermal insulation nails 3. In this way, the sound-absorbing cotton 1 is both adhesively bonded to the housing 2 and securely connected to the housing 2 by several thermal insulation nails 3, providing a secondary protection function for the sound-absorbing cotton 1. This ensures the stability and reliability of the sound-absorbing cotton, effectively preventing it from falling off or shifting during long-term use, and guaranteeing the noise reduction effect of the rail vehicle air conditioning unit.

[0034] In this embodiment, preferably, multiple insulation nails 3 are arranged at equal intervals in the horizontal and vertical directions on the shell 2, with a spacing between 300-400mm. This ensures the number of fixed connection points between the sound-absorbing cotton 1 and the shell 2, guarantees a firm connection between the sound-absorbing cotton 1 and the shell 2, and ensures the sound absorption effect.

[0035] In this embodiment, the thermal insulation nail 3 consists of a panel 31 and a nail rod 32. During installation, the panel 31 is attached to the inner surface of the shell 2. A pressure plate 5 is installed above the panel 31. The pressure plate 5 passes through the nail rod 32 and is fixedly connected to the shell 2. The panel 31 is placed between the pressure plate 5 and the shell 2. The pressure plate 5 is used to fix the panel 31 to the shell 2 by pressing. The nail tip 33 of the thermal insulation nail 3 passes through the sound-absorbing cotton 1. One end of the thermal insulation nail 3 that passes through the sound-absorbing cotton 1 is then fixed with a nail head 4, thereby fixing the sound-absorbing cotton 1 between the nail head 4 and the pressure plate 5.

[0036] In this embodiment, the insulation nail 3 is fixed to the shell 2 by pressing with the pressure plate 5. The insulation nail 3 and the shell 2 do not need to be fixed by additional fasteners or welding. This not only facilitates the fixing, installation and replacement of the insulation nail 3 and improves the installation and replacement efficiency, but also ensures the fixing effect of the insulation nail 3 and ensures that the insulation nail 3 will not move after installation, thus ensuring the sound absorption effect of the sound-absorbing cotton.

[0037] Meanwhile, since the insulation nail 3 does not need to be fixedly connected to the shell 2, the installation device can be applied to shells of different materials. That is, for shells 2 of different materials in different projects, such as those where the insulation nail 3 cannot be installed by welding or riveting, the sound-absorbing cotton 1 can be installed using this device, which is highly versatile.

[0038] In this embodiment, it is further preferred that the pressure plate 5 is fixed to the housing 2 by riveting, so as to facilitate the installation of the pressure plate 5 and ensure that the installation is firm.

[0039] In this embodiment, more preferably, the pressure plate 5 is a rectangular flat plate structure, preferably made of stainless steel, with a central through hole 51 through which the nail rod 32 passes. The diameter of the central through hole 51 is smaller than the diameter of the panel 31. Thus, after the nail rod 32 passes through the central through hole 51, the pressure plate 5 can be pressed tightly against the top of the panel 31. A mounting hole 52 is provided on each side of the central through hole 51, and a rivet 6 is installed at each mounting hole 52 to fix it to the housing 2. The mounting point of the rivet 6 is located on the outer side of the panel 31.

[0040] In this embodiment, the nail head 4 is a disc shape with an arc-shaped apex, which helps to reduce the impact on the wind field after installation. The diameter of the disc of the nail head 4 is 10-40mm, more preferably 20-40mm, and has a central inner hole 41 at the center of the disc. The diameter of the central inner hole 41 is slightly smaller than the diameter of the nail rod 32. The nail rod 32 and the nail head 4 are fixed by an interference fit. Furthermore, multiple installation slots 42 are arranged radially around the central inner hole 41. In this embodiment, four installation slots 42 are provided. During installation, the central inner hole 41 of the nail head 4 is inserted along the tip 33 of the insulation nail 4. Since the diameter of the central inner hole 41 is slightly smaller than the diameter of the nail rod 32, the nail head 4 will deform at the installation slots 42 during insertion under the action of the four installation slots 42. This not only facilitates the insertion of the nail head 4 into the insulation nail 3, but also, after insertion, can tightly lock the nail head 4 onto the nail rod 42 of the insulation nail 4, ensuring that the nail head 4 will not fall off even when the vehicle vibrates during use.

[0041] In this embodiment, the installation process of the sound-absorbing cotton 1 is as follows:

[0042] 1. Mark the installation positions of the insulation nails 3 on the inner surface of the shell 2 by scribing, and pre-install two rivets 6 for each marked point.

[0043] 2. At each marked point, place an insulation nail 3 and pass a pressure plate 5 through the nail rod 32.

[0044] 3. Insert the two mounting holes 52 on the pressure plate 5 into the two rivet cores, install the rivets with the rivet installation tool, and fix the pressure plate 5 to the housing 2 together. At this time, the pressure plate 5 presses the panel 31 of the insulation nail 3 onto the housing 2.

[0045] 4. Lay the sound-absorbing cotton 1 with adhesive backing flat on the surface of the housing 2 and stick it to the inner surface of the air conditioner housing 2 with adhesive backing. At the same time, several heat-insulating nails 3 pierce the sound-absorbing cotton 1, and the other end protrudes from the other side of the sound-absorbing cotton 1.

[0046] 5. Install nail caps 4 on the part of the insulation nail 3 that protrudes from the sound-absorbing cotton 1.

[0047] The above technical solution has the following beneficial effects:

[0048] In this installation device, in addition to being fixed to the housing 2 by adhesive backing, the sound-absorbing cotton 1 is also fixed to the housing 2 by several thermal insulation nails 3, which provides secondary protection for the sound-absorbing cotton 1, ensuring the stability and reliability of the installation of the sound-absorbing cotton 1. This can effectively prevent the sound-absorbing cotton 1 from falling off and shifting during long-term use, and ensure the noise reduction effect of the rail vehicle air conditioning unit.

[0049] In this installation device, the insulation nail 3 is fixed to the shell 2 by pressing with the pressure plate 5. The insulation nail 3 and the shell 2 do not need to be fixed by additional fasteners or welding. This not only facilitates the fixing, installation and replacement of the insulation nail 3 and improves the efficiency of installation and replacement, but also ensures the fixing effect of the insulation nail 3 and ensures that the insulation nail 3 will not move after installation, thereby ensuring the sound absorption effect of the sound-absorbing cotton 2.

[0050] In addition, since the insulation nail 3 does not need to be fixedly connected to the shell 2, but is only fixed by the pressure plate 5, the installation device can be used for shells of different materials, and can be used for various track air conditioning systems, making it highly versatile.

[0051] Example 2:

[0052] The difference from Embodiment 1 is that, in order to enable the pressure plate 5 to better press the panel 31, a recessed receiving cavity (not shown in the figure) is further provided on one side of the pressure plate 5 (the side facing the housing 2 during installation). The depth of the receiving cavity is less than the thickness of the pressure plate 5. The shape and size of the receiving cavity match the panel 31 of the insulation nail 3. The diameter of the receiving cavity is greater than the diameter of the central through hole 51. The central through hole 51 is located in the center of the receiving cavity.

[0053] During installation, the panel 31 is precisely embedded in the receiving cavity of the pressure plate 5, and the nail rod 32 passes through the central through hole 51 of the pressure plate 5. In this way, the surface of the pressure plate 5 can be completely fitted with the surface of the housing 2, which helps to improve the stability and reliability of the fixation between the pressure plate 5 and the housing 2.

[0054] Example 3:

[0055] The difference from Embodiments 1 and 2 is that, in this embodiment, in order to further enhance the connection between the insulation nail 3 and the sound-absorbing cotton 1, a backstop structure (not shown in the figure) is provided on the nail rod 32. The backstop structure consists of multiple barbs on the nail rod 32. The barbs are umbrella-shaped, with the central axis of the umbrella shape coinciding with the central axis of the nail rod 32. The tips of the barbs face the nail tip 33 of the insulation nail 3. The multiple barbs are arranged sequentially along the length of the nail rod 32. For example, two barbs can be provided on the nail rod 32. The barbs and the nail rod 32 are made of the same metal material in one piece, which helps to reduce production costs.

[0056] After the insulation nail 3 is inserted into the sound-absorbing cotton 1, the two barbs can effectively hook the sound-absorbing cotton 1, which helps to further enhance the connection between the insulation nail 3 and the sound-absorbing cotton 1 and prevent the sound-absorbing cotton 1 from falling off and shifting during vehicle operation.

[0057] Example 4:

[0058] In this embodiment, a rail vehicle air conditioning unit is provided, including a housing 2. An indoor cavity and an outdoor cavity (not shown in the figure) are separated within the housing 2 by a partition. Components such as an evaporator and a blower are installed in the indoor cavity, while a compressor, a condenser, and a condenser fan are installed in the outdoor cavity. A layer of sound-absorbing cotton 1 is fixed to the inner surface of the housing 2, and the sound-absorbing cotton 1 is fixed to the housing 2 by the sound-absorbing cotton mounting device provided in the above embodiment.

[0059] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An air conditioning unit sound absorbing cotton mounting device, the sound absorbing cotton is pasted on the shell of the air conditioning unit, characterized in that: The sound-absorbing cotton is also fixed to the shell by a number of heat-insulating nails. Each heat-insulating nail consists of a panel and a nail rod. A pressure plate is installed on the panel. The pressure plate passes through the nail rod and is fixedly connected to the shell. The pressure plate is used to press and fix the panel to the shell. The tip of the heat-insulating nail passes through the sound-absorbing cotton and is fixed by the nail head.

2. The air conditioning unit acoustical cotton mounting device of claim 1, wherein: The pressure plate is riveted and fixed to the housing.

3. The air conditioning unit acoustical cotton mounting device of claim 2, wherein: The pressure plate has a central through hole through which the nail rod passes. The diameter of the central through hole is smaller than the diameter of the panel. A rivet is provided on each side of the central through hole to fix it to the housing. The mounting point of the rivet is located on the outside of the panel.

4. The air conditioning unit acoustical cotton mounting device of claim 1, wherein: The nail head is a disc with an arc-shaped top and a diameter of 10-40mm. It has a central inner hole at the center of the disc, the diameter of which is slightly smaller than the diameter of the nail shank. Multiple installation slots are arranged radially around the central inner hole.

5. The air conditioning unit acoustical cotton mounting device of claim 1, wherein: Multiple insulation nails are arranged at equal intervals along the horizontal and vertical directions on the shell.

6. The air conditioning unit acoustical cotton mounting device of claim 1, wherein: An anti-reverse structure is provided on the nail rod.

7. The air conditioning unit sound-absorbing cotton installation device according to claim 6, characterized in that: The anti-reverse structure consists of multiple umbrella-shaped barbs on the nail rod, which are arranged sequentially along the length of the nail rod. The barbs and the nail rod are integrally made of the same metal material.

8. The air conditioning unit sound-absorbing cotton installation device according to any one of claims 1-7, characterized in that: A recessed receiving cavity is provided on one side of the pressure plate. The shape and size of the receiving cavity match the panel of the insulation nail. During installation, the panel is embedded in the receiving cavity.

9. An air conditioning unit for rail vehicles, characterized in that: The device includes a housing, and a layer of sound-absorbing cotton is fixed to the inner surface of the housing. The sound-absorbing cotton is fixed to the housing by the mounting device as described in any one of claims 1-8.

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