An air compressor housing

Abstract

The application relates to an air compressor, in particular to an air compressor shell assembled by a pair of half shells, an acoustic baffle is arranged on the inner side wall surface of the half shell, the acoustic baffle comprises an acoustic baffle body and a plurality of acoustic strips arranged on one surface of the acoustic baffle body, the axial direction of the acoustic strips is arranged along the axial direction of the half shell, mounting grooves are formed between adjacent acoustic strips, and sound-absorbing cotton strips are filled in the mounting grooves.

Description

Technical Field

[0001] This utility model relates to air compressors, and more particularly to an air compressor housing. Background Technology

[0002] The automotive air conditioning compressor, also known as the automotive air compressor, is the heart of the automotive air conditioning refrigeration system, responsible for compressing and transporting refrigerant vapor. The compressor housing is installed outside the automotive air conditioning compressor for protection.

[0003] Air compressors generate noise during operation. Due to the smaller interior space of a car, automotive air conditioning compressors have relatively higher requirements for noise reduction compared to ordinary air conditioning compressors. Utility Model Content

[0004] This application proposes an air compressor housing with sound insulation function to improve the sound insulation effect of the housing. The specific technical solution adopted is as follows:

[0005] An air compressor housing is assembled from a pair of half-shells. A sound insulation panel is provided on the inner wall of each half-shell. The sound insulation panel includes a sound insulation panel body and a plurality of sound insulation strips disposed on one surface of the sound insulation panel body. The axial direction of the sound insulation strips is arranged along the axial direction of the half-shells. An installation groove is formed between adjacent sound insulation strips, and the installation groove is filled with sound-absorbing cotton strips.

[0006] Preferably, the width of the top of the sound insulation strip is smaller than the width of its base.

[0007] Preferably, the surface of the sound-absorbing cotton strip is wavy.

[0008] Preferably, the sound insulation panel body and the sound insulation strip are an integral structure.

[0009] Preferably, the sound insulation board is a carbonized fast-growing timber board, and a continuous dense compression layer is formed on the top and side surfaces of the sound insulation strips, as well as on the surface of the sound insulation board body located between adjacent sound insulation strips.

[0010] Preferably, the thickness of the dense compression layer is 0.2-0.5 mm, and the density of the dense compression layer is 1.1-1.2 g / cm³. 3 The material density of other parts of the sound insulation panel is 0.3-0.5 g / cm³. 3 .

[0011] Preferably, the mounting groove and the sound-absorbing cotton strip are interference fit, with an interference amount of 0.1-0.2mm.

[0012] Preferably, the surface of the sound insulation panel has a fire-retardant coating.

[0013] Preferably, the interior of the half-shell is provided with a support frame, and the half-shell and the support frame form a closed inner cavity; the two support frames of a pair of half-shells can form an installation space for the air compressor, and an elastic damping element is provided on the wall of the support frame located on one side of the installation space.

[0014] Preferably, the support frame has multiple support portions on the wall surface located on one side of the installation space, and the elastic damping element is disposed on the surface of the support portions.

[0015] An air compressor housing according to this application improves the sound insulation effect of the half-shell, specifically the mid-frequency noise, through the combination of sound insulation board and sound-absorbing cotton strips filled between adjacent sound insulation strips.

[0016] Furthermore, the specific structural design of the sound insulation strip with a trapezoidal cross-section and the sound-absorbing cotton strip with a wavy surface can further improve the sound insulation and sound absorption effects.

[0017] Furthermore, the carbonized fast-growing timber panels are lightweight, avoiding increased vehicle weight due to the sound insulation panels. The continuous, dense compression layers and fire-retardant surface coating improve the fire resistance and heat resistance of the sound insulation panels. Additionally, the interference fit between the mounting groove and the sound-absorbing strips serves as an auxiliary fixing structure, preventing the sound-absorbing strips from falling off due to vehicle movement or air compressor vibrations.

[0018] Furthermore, elastic damping components are installed on the wall surface of the support frame on one side of the installation space. These components can absorb and isolate low-frequency mechanical vibration noise from the air compressor, such as noise generated by motor operation and piston impact. This, in conjunction with the sound insulation panel, can absorb and isolate the main mid-to-low frequency noise from the air compressor. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide further explanation of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0020] Figure 1 This is a schematic diagram of a structure of an air compressor housing provided in an embodiment of this application.

[0021] Figure 2 yes Figure 1 A frontal sectional view of the overall structure.

[0022] Figure 3 yes Figure 2 Enlarged section view of point B in the middle.

[0023] Figure 4 This is another assembly diagram of the support frame and elastic damping component provided in the embodiments of this application.

[0024] Figure 5 This is a schematic diagram of the pressing process of the sound insulation board provided in the embodiments of this application.

[0025] Figure 6 yes Figure 1 A magnified view of a portion of point A in the middle.

[0026] Figure 7 yes Figure 2 A magnified view of a section at point C.

[0027] In the above attached figures: 1. Sound insulation panel; 101. Sound insulation panel body; 102. Sound insulation strip; 2. Half shell; 201. Outer edge for connection; 202. Insertion groove; 203. Side groove; 3. Sound-absorbing cotton strip; 4. Support frame; 401. Support part; 5. Inner cavity; 6. Elastic damping element; 7. Air compressor; 8. Snap-fit ​​element; 801. Fixing plate; 802. Connecting plate; 803. Pulling plate; 804. Elastic snap-fit ​​strip; 805. Snap-fit ​​strip. Detailed Implementation

[0028] The technical solutions in this application are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] Example

[0030] Reference Figures 1-7 The air compressor housing shown is a split structure, assembled from a pair of half-shells 2. The half-shells 2 can be in the shape and material of existing shells, such as cast iron or aluminum alloy shells, with heat dissipation structures on the outer facade and sealing structures at the assembly joints.

[0031] Specifically, a sound insulation panel 1 is provided on the inner wall of the half shell 2. The sound insulation panel 1 includes a sound insulation panel body 101 and multiple sound insulation strips 102 disposed on one surface of the sound insulation panel body 101. The axial direction of the sound insulation strips 102 is arranged along the axial direction of the half shell 2. An installation groove is formed between adjacent sound insulation strips 102, and the installation groove is filled with sound-absorbing cotton strips 3.

[0032] Specifically, fast-growing timber with a moisture content of 3-5% is used. An installation groove is milled into the surface of the sound insulation panel body 11, thereby forming the sound insulation strip 102. Therefore, the sound insulation panel body 101 and the sound insulation strip 102 are an integral structure. Subsequently, the sound insulation panel 1 with the sound insulation strip 102 undergoes hot-pressing carbonization treatment. This treatment process can be any of the existing technologies. For example, an upper pressure plate with a shape that complements the surface of the sound insulation board 1 is installed on a hot press. In other words, the hot-pressing surface of the upper pressure plate has convex ridges with the same cross-sectional shape as the mounting groove, and the upper pressure plate is a hot plate with a temperature of 200-210°C. The lower pressure plate is a flat plate and is a cold plate. The uncarbonized sound insulation board 1 is placed on the lower pressure plate, and the upper pressure plate with the hot-pressing temperature is lowered, with its convex ridges complementing the mounting groove, so that the upper pressure plate fits into contact with all parts of the sound insulation board 1. After contact, it continues to press down 0.5 mm and holds. At the same time, the lower pressure plate is heated to the same temperature as the upper pressure plate, and after holding the pressure for about 20-30 minutes, the carbonized sound insulation board 1 is obtained. Meanwhile, a continuous dense compression layer 103 is formed on the top and side surfaces of the sound insulation strips 102, as well as on the surface layer of the sound insulation board body 101 located between adjacent sound insulation strips 102.

[0033] Using the above method, the thickness of the dense compression layer 103 is 0.2-0.5 mm, and the density of the dense compression layer 103 is 1.1-1.2 g / cm³. 3 The density of the material in other parts of the sound insulation panel 1 is 0.3-0.5 g / cm³. 3 The sound insulation panel body 101, after carbonization treatment, has the advantage of being lightweight. The dense compression layer 103 on the surface is a physical flame-retardant layer, which can ensure the fire resistance and heat resistance of the sound insulation panel 1. In addition, the carbonized wood has good thermal stability and a high thermal conductivity, which does not affect the heat dissipation of the half-shell 2.

[0034] Of course, a fire-retardant coating can be applied to the surface of the sound insulation panel 1. The fire-retardant coating can be any of the existing technologies to further ensure the fire resistance of the sound insulation panel 1.

[0035] Furthermore, preferably, the width of the top of the sound insulation strip 102 is smaller than the width of its base. In other words, the cross-sectional shape of the sound insulation strip 102 is trapezoidal.

[0036] Next, sound-absorbing cotton strips 3 are filled into the installation groove, and the sound-absorbing cotton strips 3 are bonded and fixed to the groove wall. The sound insulation board 1 filled with sound-absorbing cotton strips 3 is placed in an environment with a temperature and humidity of 20℃ / 60%RH for equilibration treatment for 3-5 days. During this process, the moisture content of the sound insulation board 1 increases with the equilibration treatment, and the width of the sound insulation strip 102 increases slightly, thus forming an interference fit with the sound-absorbing cotton strip 3. The interference amount can reach 0.1-0.2mm, which helps to fix the sound-absorbing cotton strip 3.

[0037] Preferably, the sound-absorbing cotton strip 3 is a strip-shaped component obtained by pressing high-temperature resistant inorganic fibers, such as ceramic cotton or glass wool. In addition, the surface of the sound-absorbing cotton strip 3 is pressed into a wavy shape.

[0038] The sound insulation board 1 filled with sound-absorbing cotton strips 3 is fixed to the inner wall of the half shell 2 by means of bonding, screwing or other methods. Preferably, the sound insulation board 1 covers the entire inner wall of the half shell 2.

[0039] To ensure stable installation of the air compressor 7, a support frame 4 is provided inside the half-shell 2. The support frame 4 is screwed or welded to the half-shell 2. The half-shell 2 and the support frame 4 form a closed inner cavity 5. The two support frames 4 of a pair of half-shells 2 can form an installation space for the air compressor 7. In some embodiments, an elastic damping element 6 is bonded to the wall surface of the support frame 4 on one side of the installation space. The elastic damping element 6 can be any of the prior art, such as a rubber pad.

[0040] In other embodiments, the support frame 4 has multiple (e.g., three) support portions 401 integrally formed on the wall surface located on one side of the installation space. The support portions 401 are axially arranged protrusions along the axial direction of the support frame 4, and elastic damping elements 6 are disposed on the surface of the support portions 401. The support portions 401 abut against the outer surface of the air compressor 7 through the elastic damping elements 6, so that the air compressor 7 is fixedly installed in the housing.

[0041] During manufacturing, the sound insulation board 1 is first fixed inside the half shell 2, and the connection position of the support frame 4 is reserved. Then the support frame 4 is assembled. The support frame 4 and the inner wall of the half shell 2 are preferably achieved by welding. Finally, the half shell 2 with the assembled support frame 4 are brought together, and the pair of half shell 2 are fixed after being installed in the air compressor 7.

[0042] A pair of half-shells 2 can be assembled by welding or screwing. They can also be assembled in a detachable manner.

[0043] The half-shell 2 has a connecting outer edge 201, and a sealing ring is embedded on the mounting surface of the connecting outer edge 201 to maintain sealing. A insertion groove 202 is provided on the side surface of the connecting outer edge 201, and the snap-fit ​​member 8 can be inserted into the corresponding insertion groove 202 of a pair of half-shells 2 to fix the two together.

[0044] The snap-fit ​​component 8 is a one-piece metal component, including a fixing plate 801. The two sides of the fixing plate 801 are vertically bent to form a connecting plate 802. The front end of the connecting plate 802 extends to form a pull plate 803 with a smaller rear thickness. The inner wall of the pull plate 803 is flush with the inner wall of the connecting plate 802, but its outer wall transitions to the outer wall of the connecting plate 802 via a bevel. An annular elastic snap-fit ​​strip 804, such as an annular component made of rolled metal sheet, is welded to the outer wall of the pull plate 803. Near the end of the inner wall, a snap-fit ​​strip 805 extends to form the snap-fit ​​strip.

[0045] A side groove 203 is provided on the inner wall of the insertion groove 202, and the shape and position of the side groove 203 are matched with the snap-fit ​​strip 805.

[0046] During assembly, first align the connection of the pair of half shells 2 with the outer edge 201, and then insert the two snap-fit ​​feet of the snap-fit ​​part 8 (including the part of the connecting plate 802 and the pull plate 803) into the corresponding two insertion slots 202 to achieve snap-fit ​​assembly.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air compressor housing, assembled from a pair of half-shells (2), characterized in that, A sound insulation board (1) is provided on the inner wall of the half shell (2). The sound insulation board (1) includes a sound insulation board body (101) and multiple sound insulation strips (102) disposed on one surface of the sound insulation board body (101). The axial direction of the sound insulation strips (102) is arranged along the axial direction of the half shell (2). An installation groove is formed between adjacent sound insulation strips (102), and the installation groove is filled with sound-absorbing cotton strips (3).

2. The air compressor housing according to claim 1, characterized in that, The width of the top of the sound insulation strip (102) is smaller than the width of its base.

3. The air compressor housing according to claim 1, characterized in that, The surface of the sound-absorbing cotton strip (3) is wavy.

4. The air compressor housing according to claim 1, characterized in that, The sound insulation panel body (101) and the sound insulation strip (102) are an integral structure.

5. The air compressor housing according to claim 4, characterized in that, The sound insulation board (1) is a carbonized fast-growing timber board, and a continuous dense compression layer (103) is formed on the top and side surfaces of the sound insulation strip (102), as well as on the surface of the sound insulation board body (101) located between adjacent sound insulation strips (102).

6. The air compressor housing according to claim 5, characterized in that, The thickness of the dense compression layer (103) is 0.2-0.5 mm, and the density of the dense compression layer (103) is 1.1-1.2 g / cm³. 3 The material density of the other parts of the sound insulation board (1) is 0.3-0.5 g / cm³. 3 .

7. The air compressor housing according to claim 4 or 5, characterized in that, The mounting groove and the sound-absorbing cotton strip (3) are interference fit, with an interference amount of 0.1-0.2mm.

8. The air compressor housing according to claim 1, characterized in that, The surface of the sound insulation panel (1) has a fireproof coating.

9. The air compressor housing according to claim 1, characterized in that, The interior of the half-shell (2) is provided with a support frame (4), and the half-shell (2) and the support frame (4) form a closed inner cavity (5); the two support frames (4) of a pair of half-shells (2) can form an installation space for an air compressor, and an elastic damping element (6) is provided on the wall of the support frame (4) located on one side of the installation space.

10. The air compressor housing according to claim 9, characterized in that, The support frame (4) has multiple support parts (401) on the wall surface located on one side of the installation space, and the elastic damping element (6) is disposed on the surface of the support part (401).

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