An INJ tube mounting structure and a scroll compressor

Abstract

This utility model relates to the field of scroll compressor technology, and particularly to an INJ tube mounting structure and a scroll compressor. The INJ tube mounting structure includes a silencer body mounted on the upper part of the fixed scroll plate of the scroll compressor, with a first through hole on the silencer body; an INJ tube body passing through the upper shell component of the scroll compressor, the INJ tube body passing through the first through hole; a positioning member mounted on the upper part of the fixed scroll plate, the bottom end of the INJ tube body inserted into the positioning member, the bottom end of the INJ tube body communicating with the compression chamber of the scroll compressor; and a sealing assembly disposed on the INJ tube body, the sealing assembly covering the upper part of the first through hole. This INJ tube mounting structure and scroll compressor can solve the problem of noise generated by airflow passing through the gap when the INJ tube passes through the silencer.

Description

Technical Field

[0001] This application relates to the field of scroll compressor technology, and in particular to an INJ tube mounting structure and a scroll compressor. Background Technology

[0002] To meet the demands of a wider range of applications, customers are increasingly requiring higher levels of noise reduction from scroll compressors, leading to a growing need for low-noise compressors. The main sources of compressor noise are aerodynamic noise, mechanical noise, and electromagnetic noise. Improvements to these noise levels are generally achieved by reducing noise generation and minimizing noise propagation.

[0003] In traditional scroll compressor layouts, to reduce aerodynamic noise generated by the high-pressure, rapid airflow at the exhaust, a muffler is typically added at the exhaust point to effectively reduce the propagation of airflow pulsation noise. However, some compressors use inlet gas injection to increase enthalpy for performance enhancement, thus requiring the addition of an INJ pipe (inlet gas injection enthalpy-increasing pipe) to the compressor's aerodynamic structure. Currently, to avoid noise caused by perforating the muffler, the inlet gas injection enthalpy-increasing port is generally located on the side of the stationary plate, thus avoiding interference with the muffler.

[0004] However, some scroll compressors have issues with their appearance, making it difficult to modify them. Therefore, the enthalpy-increasing inlet cannot be placed on the side of the stationary plate. Instead, the muffler must be perforated to avoid the INJ tube. This results in the high-speed pulsating gas passing through the gap between the INJ tube and the muffler hole, causing additional noise. Utility Model Content

[0005] In view of this, the purpose of this application is to provide an INJ tube mounting structure and a scroll compressor to solve the problem of noise generated by airflow through the gap when the INJ tube passes through the silencer.

[0006] According to a first aspect of this utility model, an INJ tube mounting structure is provided, wherein the INJ tube mounting structure includes: a silencer body, mounted on the upper part of the fixed scroll plate of the scroll compressor, the silencer body having a first through hole; an INJ tube body, passing through the upper shell component of the scroll compressor, the INJ tube body passing through the first through hole; a positioning member, mounted on the upper part of the fixed scroll plate, the bottom end of the INJ tube body being inserted into the positioning member, the bottom end of the INJ tube body communicating with the compression chamber of the scroll compressor; and a sealing assembly, disposed on the INJ tube body, the sealing assembly covering the upper part of the first through hole.

[0007] Preferably, the sealing assembly includes: a baffle fixed to the INJ tube body, the baffle being sleeved in the middle of the INJ tube body; and a flexible sealing gasket installed on the top of the silencing cover body, the flexible sealing gasket having a second through hole in the center, the INJ tube body passing through the second through hole, and the flexible sealing gasket being sandwiched between the baffle and the silencing cover body.

[0008] Preferably, an annular mounting groove is formed on the top of the soundproof cover body around the first through hole, and the flexible sealing gasket is installed in the annular mounting groove.

[0009] Preferably, the upper part of the fixed vortex disk is provided with a spray groove, the positioning component is partially installed in the spray groove, and the spray groove is connected to the compression chamber.

[0010] Preferably, the positioning component includes: an upper annular portion located above the top surface of the fixed vortex disk, with the bottom end of the INJ tube body inserted into the upper annular portion; and a lower annular portion installed in the spray tank, with the top of the lower annular portion connected to the bottom of the upper annular portion, and the inner diameter of the lower annular portion being smaller than the outer diameter of the INJ tube body.

[0011] Preferably, a first sealing ring is provided between the inner wall of the upper annular portion and the bottom end of the INJ tube body, and a second sealing ring is provided between the outer wall of the lower annular portion and the spray groove.

[0012] Preferably, a spring and a washer are provided inside the spray tank. The bottom end of the spring abuts against the bottom of the spray tank. The bottom of the spray tank has a connecting hole that communicates with the compression chamber. The top end of the spring abuts against the bottom surface of the washer. The diameter of the washer is larger than the inner diameter of the lower annular portion. The spring drives the washer to abut against the bottom of the lower annular portion.

[0013] Preferably, a stepped portion is formed in the spray tank. When fluid flows into the compression chamber through the INJ pipe body, the gasket abuts against the top surface of the stepped portion. The diameter of the gasket is smaller than the diameter of the top surface of the stepped portion. A flow channel communicating with the compression chamber is formed in the part of the top surface of the stepped portion that is not covered by the gasket.

[0014] Preferably, the upper shell component has a third through hole, and a sleeve extending in a vertical direction is disposed in the third through hole, with the INJ tube body passing through the sleeve.

[0015] According to a second aspect of the present invention, a scroll compressor is provided, wherein the scroll compressor includes the INJ tube mounting structure as described above.

[0016] This utility model discloses an INJ tube mounting structure and a scroll compressor. The silencer body has a first through hole, through which the INJ tube body passes. The INJ tube body is inserted into the upper shell of the scroll compressor and the first through hole. A positioning member is installed on the upper part of the fixed scroll plate, and the bottom end of the INJ tube body is inserted into the positioning member to position the INJ tube body. The bottom end of the INJ tube body is connected to the compression chamber of the scroll compressor. A sealing assembly is disposed on the INJ tube body and covers the upper part of the first through hole, thereby sealing the gap between the INJ tube body and the first through hole, preventing gas from flowing out of the first through hole and generating noise. This effectively solves the problem of noise generated by airflow through the gap when the INJ tube passes through the silencer.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the INJ tube mounting structure and scroll compressor according to this utility model.

[0020] Figure 2 This is a partial schematic diagram of the INJ pipe mounting structure according to this utility model.

[0021] Reference numerals: 1-Silencer cover body; 10-First through hole; 11-Annular mounting groove; 2-INJ pipe body; 3-Positioning component; 31-Upper annular part; 310-First sealing ring; 32-Lower annular part; 320-Second sealing ring; 4-Sealing assembly; 41-Baffle; 42-Flexible sealing gasket; 5-Fixed vortex disk; 50-Spraying groove; 501-Step part; 51-Spring; 52-Gasket; 6-Upper shell component; 61-Sleeve; 7-Compression chamber; 70-Connecting hole. Detailed Implementation

[0022] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0023] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0024] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0025] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0026] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0027] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0028] The terminology used herein is for the purpose of describing various examples only and is not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0029] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0030] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0031] like Figure 1 and Figure 2 As shown, according to a first aspect of the present invention, an INJ pipe mounting structure is provided, which includes a sound-absorbing cover body 1, an INJ pipe body 2, a positioning element 3, and a sealing assembly 4.

[0032] In the following description, reference will be made to Figure 1 and Figure 2 The specific structure of the above-mentioned components and their connection relationships in the INJ pipe mounting structure are described in detail.

[0033] like Figure 1 and Figure 2As shown, in this embodiment, the silencer body 1 can be installed on the upper part of the fixed scroll plate 5 of the scroll compressor. A first through hole 10 can be provided on the silencer body 1. The INJ tube body 2 can pass through the upper shell component 6 of the scroll compressor, and simultaneously pass through the first through hole 10 of the silencer body 1. A positioning member 3 can be installed on the upper part of the fixed scroll plate 5, and the bottom end of the INJ tube body 2 can be inserted into the positioning member 3, thereby positioning the INJ tube body 2. A compression chamber 7 can be formed in the lower part of the fixed scroll plate 5, and the bottom end of the INJ tube body 2 communicates with the compression chamber 7. A sealing assembly 4 can be provided on the INJ tube body 2, and the sealing assembly 4 covers the upper part of the first through hole 10, thereby sealing the gap between the INJ tube body 2 and the first through hole 10 to prevent gas from flowing out of the first through hole 10 and generating noise.

[0034] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the lower part of the fixed scroll plate 5 can engage with the moving scroll plate of the scroll compressor to form a compression chamber 7. The silencer and positioning element 3 can be bolted to the upper part of the fixed scroll plate 5. The positioning element 3 can be a flange, and it can be partially embedded in the upper part of the fixed scroll plate 5 to ensure accurate positioning.

[0035] Preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, the sealing assembly 4 may include a baffle 41 and a flexible sealing gasket 42. The baffle 41 can be installed on the outer wall of the INJ tube body 2. Specifically, the baffle 41 can be sleeved on the middle of the INJ tube body 2 and welded to it. The flexible sealing gasket 42 can be installed on the top of the silencer body 1. A second through hole can be formed in the center of the flexible sealing gasket 42, through which the INJ tube body 2 can pass. Preferably, the second through hole is aligned with the first through hole 10. When the INJ tube body 2 is installed in place, the flexible sealing gasket 42 can be clamped and fixed between the baffle 41 and the silencer body 1 to seal the first through hole 10.

[0036] Furthermore, preferably, such as Figure 1 and Figure 2As shown, in this embodiment, the flexible sealing gasket 42 can be formed into a ring shape. The flexible sealing gasket 42 can be made of rubber to absorb the vibration of the silencer body 1 and reduce noise generation. An annular mounting groove 11 can be formed on the top of the silencer body 1 around the outer periphery of the first through hole 10. The flexible sealing gasket 42 can be engaged in the annular mounting groove 11 to radially position the flexible sealing gasket 42. When the INJ pipe body 2 is installed in place, the baffle 41 presses the flexible sealing gasket 42, and the sealing assembly 4 covers and blocks the first through hole 10. The gas inside the silencer body 1 cannot flow out from the first through hole 10, thereby preventing high-speed pulsating airflow from passing through the first through hole 10 and generating noise. In addition, the baffle 41 and the flexible sealing gasket 42 can also provide support, thereby preventing the silencer body 1 from deforming under the impact of airflow.

[0037] Preferred, such as Figure 1 and Figure 2 As shown in the embodiment, the upper part of the fixed vortex disk 5 may be provided with a spray groove 50, and the INJ tube body 2 may be positioned directly above the spray groove 50. The positioning member 3 may be partially installed inside the spray groove 50 to guide the connection between the INJ tube body 2 and the spray groove 50. The spray groove 50 may be connected to the compression chamber 7, so that the INJ tube body 2 can be connected to the compression chamber 7 after the positioning member 3 is inserted.

[0038] Specifically, such as Figure 1 and Figure 2 As shown, in this embodiment, the positioning member 3 may include an upper annular portion 31 and a lower annular portion 32. The upper annular portion 31 may be located above the top surface of the fixed vortex disk 5 (i.e., the upper annular portion 31 is not embedded in the spray groove 50). The bottom end of the INJ tube body 2 may be inserted into the upper annular portion 31 to position the bottom end of the INJ tube body 2. The lower annular portion 32 may be installed in the spray groove 50. The lower annular portion 32 may be coaxially arranged with the upper annular portion 31, and the top of the lower annular portion 32 may be connected to the bottom of the upper annular portion 31. Preferably, the lower annular portion 32 and the upper annular portion 31 are integrally formed. The inner diameter of the lower annular portion 32 is smaller than the outer diameter of the INJ tube body 2, so that after the INJ tube body 2 is inserted into the upper annular portion 31, the bottom end of the INJ tube body 2 can abut against the top end of the lower annular portion 32, thereby achieving axial positioning of the INJ tube body 2.

[0039] Furthermore, preferably, such as Figure 1 and Figure 2As shown, in this embodiment, a first annular groove can be formed on the outer periphery of the bottom end of the INJ tube body 2. A first sealing ring 310 can be provided between the inner wall of the upper annular portion 31 and the bottom end of the INJ tube body 2. The first sealing ring 310 can be disposed within the first annular groove. A second annular groove can be formed on the outer wall of the lower annular portion 32. A second sealing ring 320 can be provided between the outer wall of the lower annular portion 32 and the spray tank 50. The second sealing ring 320 can be disposed within the second annular groove. This arrangement ensures the sealing between the INJ tube body 2, the positioning member 3, and the spray tank 50.

[0040] In addition, preferred, such as Figure 1 and Figure 2 As shown, in this embodiment, a spring 51 and a gasket 52 may also be provided inside the spray tank 50. The bottom end of the spring 51 can abut against the bottom of the spray tank 50. The bottom of the spray tank 50 may have a connecting hole 70 communicating with the compression chamber 7. The top end of the spring 51 abuts against the bottom surface of the gasket 52, so that the spring 51 can drive the gasket 52 to abut against the bottom of the lower annular portion 32. The diameter of the gasket 52 is larger than the inner diameter of the lower annular portion 32, so that the gasket 52 can block the central hole of the lower annular portion 32 to prevent the fluid in the compression chamber 7 from flowing back into the INJ tube body 2.

[0041] Furthermore, preferably, such as Figure 1 and Figure 2 As shown, in this embodiment, a stepped portion 501 may be formed within the spray groove 50. When fluid flows into the compression chamber 7 through the INJ tube body 2, the gasket 52, driven by the fluid pressure, can abut against the top surface of the stepped portion 501. The diameter of the gasket 52 is smaller than the diameter of the top surface of the stepped portion 501 to avoid the gasket 52 completely covering the top surface of the stepped portion 501. A flow channel (not shown) may be formed on the portion of the top surface of the stepped portion 501 not covered by the gasket 52. This flow channel may connect to the compression chamber 7 (the flow channel may extend vertically to directly connect to the compression chamber 7; or the flow channel may connect to the connecting hole 70 to indirectly connect to the compression chamber 7). This arrangement allows fluid in the INJ tube body 2 to flow into the compression chamber 7, while fluid in the compression chamber 7 does not flow into the INJ tube body 2.

[0042] Preferred, such as Figure 1 As shown, in this embodiment, a third through hole may be provided on the upper housing component 6 of the scroll compressor. A sleeve 61 extending vertically may be provided in the third through hole, and the sleeve 61 may be welded to the third through hole. The INJ tube body 2 may be inserted through the sleeve 61, thereby preventing solder from falling into the interior of the scroll compressor.

[0043] In addition, such as Figure 1 As shown, according to a second aspect of the present invention, a scroll compressor is provided, the scroll compressor including the INJ tube mounting structure as described above.

[0044] During use, the sleeve 61 can be welded to the upper shell component 6 first, and then the INJ tube body 2 can be inserted through the sleeve 61 (at this time, the INJ tube body 2 and the sleeve 61 are not welded). Then, the baffle 41 is welded to the INJ tube body 2 (the welding position should be confirmed with the tooling to avoid excessive or insufficient pressure on the flexible sealing gasket 42 due to welding height), and the flexible sealing gasket 42 is installed into the annular mounting groove 11. Then, the upper shell component 6 is assembled with the tube shell of the scroll compressor, and the suction pipe of the upper shell component 6 is positioned and installed with the suction hole of the fixed scroll plate 5. After installation, the upper shell component 6 is welded to the tube shell. Finally, the position of the INJ tube body 2 is adjusted so that the INJ tube body 2 passes through the first through hole 10 and is inserted into the positioning part 3, and then the INJ tube body 2 is welded to the sleeve 61 (this assembly step is blind assembly, since the upper shell component 6 has been positioned and assembled, the operator can easily complete the above blind assembly step). The INJ pipe mounting structure can seal the gap between the INJ pipe body 2 and the first through hole 10, thereby preventing gas from flowing out of the first through hole 10 and generating noise.

[0045] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The scope of protection of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this application. Such modifications, changes, 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 this application, and should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An INJ tube mounting structure, installed in a scroll compressor, characterized in that, The INJ pipe mounting structure includes: The main body of the silencer is installed on the upper part of the fixed scroll plate of the scroll compressor, and the main body of the silencer has a first through hole. The INJ tube body is inserted into the upper shell component of the scroll compressor, and the INJ tube body is inserted into the first through hole; A positioning element is installed on the upper part of the fixed scroll plate, and the bottom end of the INJ tube body is inserted into the positioning element. The bottom end of the INJ tube body is connected to the compression chamber of the scroll compressor. A sealing assembly is disposed on the body of the INJ tube, and the sealing assembly covers the upper part of the first through hole.

2. The INJ pipe mounting structure according to claim 1, characterized by The sealing assembly includes: A baffle, fixed to the INJ tube body, the baffle being sleeved on the middle part of the INJ tube body; and A flexible sealing gasket is installed on the top of the soundproof cover body. A second through hole is opened in the center of the flexible sealing gasket. The INJ tube body passes through the second through hole. The flexible sealing gasket is sandwiched between the baffle and the soundproof cover body.

3. The INJ pipe mounting structure according to claim 2, characterized by The top of the soundproof cover body has an annular mounting groove formed on the outer periphery of the first through hole, and the flexible sealing gasket is installed in the annular mounting groove.

4. The INJ pipe mounting structure according to claim 1, characterized by The upper part of the fixed vortex disk is provided with a spray groove, and the positioning component is partially installed in the spray groove, which is connected to the compression chamber.

5. The INJ pipe mounting structure according to claim 4, characterized by The positioning element includes: The upper annular portion is located above the top surface of the fixed scroll plate, and the bottom end of the INJ tube body is inserted into the upper annular portion; and The lower annular portion is installed inside the spray tank. The top of the lower annular portion is connected to the bottom of the upper annular portion. The inner diameter of the lower annular portion is smaller than the outer diameter of the INJ tube body.

6. The INJ pipe mounting structure according to claim 5, characterized in that, A first sealing ring is provided between the inner wall of the upper annular portion and the bottom end of the INJ tube body, and a second sealing ring is provided between the outer wall of the lower annular portion and the spray groove.

7. The INJ pipe mounting structure according to claim 6, characterized by A spring and a washer are provided inside the spray tank. The bottom end of the spring abuts against the bottom of the spray tank. The bottom of the spray tank has a connecting hole that connects to the compression chamber. The top end of the spring abuts against the bottom surface of the washer. The diameter of the washer is larger than the inner diameter of the lower annular portion. The spring drives the washer to abut against the bottom of the lower annular portion.

8. The INJ pipe mounting structure according to claim 7, characterized by The spray tank has a stepped section. When fluid flows into the compression chamber through the INJ pipe body, the gasket abuts against the top surface of the stepped section. The diameter of the gasket is smaller than the diameter of the top surface of the stepped section. A flow channel communicating with the compression chamber is opened on the part of the top surface of the stepped section that is not covered by the gasket.

9. The INJ pipe mounting structure according to claim 1, characterized by The upper shell component has a third through hole, and a sleeve extending vertically is provided in the third through hole, with the INJ tube body passing through the sleeve.

10. A scroll compressor characterized by, The scroll compressor includes the INJ tube mounting structure as described in any one of claims 1 to 9.

Images