Compressor with housing fitting

Abstract

A compressor includes a housing, a compression mechanism, and a fitting. The housing includes an opening and defines a chamber. The compression mechanism is disposed within the chamber of the housing. The fitting is attached to the housing at the opening. Working fluid flowing through the fitting flows to the compression mechanism. The opening is partially defined by a first edge and a second edge. The first edge includes a first planar surface, and the second edge includes a second planar surface facing the first planar surface. A first portion of the fitting extends at least partially into the opening, and a second portion of the fitting abuts against the first and second edges.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to U.S. Patent Application No. 16 / 941,060, filed July 28, 2020. The entire disclosure of the above application is incorporated herein by reference. Technical Field

[0003] This disclosure relates to compressors with housing components. Background Technology

[0004] This section provides background information relating to this disclosure and is not necessarily prior art.

[0005] For example, a climate control system, such as a heat pump system, refrigeration system, or air conditioning system, may include a fluid loop having an outdoor heat exchanger, an indoor heat exchanger, an expansion device disposed between the indoor and outdoor heat exchangers, and one or more compressors that circulate a working fluid (e.g., refrigerant or carbon dioxide) between the indoor and outdoor heat exchangers. The goal is to achieve efficient and reliable operation of the one or more compressors to ensure that the climate control system equipped with one or more compressors can provide cooling and / or heating effects effectively and efficiently on demand. Summary of the Invention

[0006] This section provides a general overview of the disclosure and is not a complete disclosure of the full scope or all features of the disclosure.

[0007] In one embodiment, this disclosure provides a compressor including a housing, a compression mechanism, and an accessory (e.g., an intake accessory, a discharge accessory, or a fluid injection accessory). The housing includes an opening and defines a chamber. The compression mechanism is disposed within the chamber of the housing. The accessory is attached to the housing at the opening. Working fluid flowing through the accessory flows to the compression chamber of the compression mechanism. The opening is partially defined by a first edge and a second edge. The first edge includes a first planar surface, and the second edge includes a second planar surface facing the first planar surface. A first portion of the accessory extends at least partially into the opening, and a second portion of the accessory abuts against the first and second edges.

[0008] In some configurations of the compressor described in the above paragraphs, the opening is non-circular.

[0009] In some configurations of the compressor described in any one or more of the preceding paragraphs, the opening has opposing arcuate surfaces. The outer diameter surface of the fitting abuts against at least one of the opposing arcuate surfaces.

[0010] In some configurations of the compressor in any one or more of the paragraphs above, the opposing curved surfaces and the first and second edges define a circular shape.

[0011] In some configurations of the compressor described in any one or more of the paragraphs above, the fitting is a suction fitting. The working fluid flowing through the suction fitting flows to the compression chamber of the compression mechanism.

[0012] In some configurations of the compressor in any one or more of the paragraphs above, the first part of the fitting is the first part of the axial end surface of the fitting, and the second part of the fitting is the second part of the axial end surface of the fitting.

[0013] In some configurations of the compressor in any one or more of the paragraphs above, the opening has opposing arcuate surfaces. The opposing arcuate surfaces extend, and the first and second edges define a circular shape.

[0014] In some configurations of the compressor in any one or more of the above paragraphs, the opening has opposing curved surfaces. Each of the first edge and the second edge is positioned between opposing curved surfaces.

[0015] In some configurations of the compressor in any one or more of the paragraphs above, the first edge and the second edge prevent the outer diameter surface of the fitting from contacting the first planar surface and the second planar surface.

[0016] In some configurations of the compressor in any one or more of the paragraphs above, the first edge and the second edge prevent the fittings from extending into the chamber of the housing.

[0017] In some configurations of the compressor in any one or more of the above paragraphs, the second part of the fitting abuts against the first and second edges at a position outside the opening.

[0018] In some configurations of the compressor in any one or more of the paragraphs above, the length of each of the opposing arcuate surfaces is greater than the length of each of the first planar surface and the second planar surface.

[0019] In another embodiment, this disclosure provides a compressor including a housing, a compression mechanism, and an accessory (e.g., an intake accessory, an exhaust accessory, or a fluid injection accessory). The housing includes an opening and defines a chamber. The compression mechanism is disposed within the chamber of the housing. The accessory is attached to the housing at the opening and is at least partially disposed outside the housing. Working fluid flows between the accessory and the compression chamber of the compression mechanism. The opening is partially defined by a first edge having a first planar surface, a second edge having a second planar surface, and an arcuate surface disposed between the first and second planar surfaces. The first and second edges prevent the accessory from contacting the first and second planar surfaces and allow the accessory to contact the arcuate surface.

[0020] In some configurations of the compressor described above, the opening has another arcuate surface opposite to the arcuate surface. The outer diameter surface of the fitting abuts against at least one of the opposing arcuate surfaces.

[0021] In some configurations of the compressor in any one or more of the paragraphs above, a first part of the fitting extends at least partially into the opening, and a second part of the fitting abuts against the first and second edges at a position outside the opening.

[0022] In some configurations of the compressor described in any one or more of the preceding paragraphs, the fitting includes a first axial end portion having a first thickness and a second axial end portion having a second thickness. The first thickness is greater than the second thickness. The first axial end portion includes a first portion that extends at least partially into the opening and a second portion that contacts a first edge and a second edge.

[0023] In some configurations of the compressor described in any one or more of the preceding paragraphs, a first axial end has a first outer diameter surface, and a second axial end has a second outer diameter surface. The first diameter of the first outer diameter surface is larger than the second diameter of the second outer diameter surface.

[0024] In some configurations of the compressor described in any one or more of the preceding paragraphs, the fitting has a transition portion located between a first axial end and a second axial end and having a third outer diameter surface. The third diameter of the third outer diameter surface is smaller than the first diameter and the second diameter.

[0025] In some configurations of the compressor described in any one or more of the preceding paragraphs, the fittings are made of steel and have a first axial end and a second axial end. The second axial end has a copper-plated coating. The first axial end is attached to the housing.

[0026] In some configurations of the compressor in any one or more of the paragraphs above, the length of each of the opposing arcuate surfaces is greater than the length of each of the first planar surface and the second planar surface.

[0027] In another embodiment, this disclosure provides a compressor including a housing, a compression mechanism, and fittings (e.g., an intake fitting, a discharge fitting, or a fluid injection fitting). The housing includes an opening and defines a chamber. The compression mechanism is disposed within the chamber of the housing. The fittings include opposing first and second axial ends. The first axial end is attached to the housing at the opening and has a first outer diameter surface and a first inner diameter surface. The second axial end is disposed outside the housing and has a second outer diameter surface and a second inner diameter surface. A first diameter of the first outer diameter surface is larger than a second diameter of the second outer diameter surface. A third diameter of the first inner diameter surface is larger than a second diameter of the second outer diameter surface and a fourth diameter of the second inner diameter surface. The first axial end has a first thickness, and the second axial end has a second thickness. The first thickness is greater than the second thickness.

[0028] In some configurations of the compressor described above, the opening includes a first edge and a second edge opposite to the first edge. A first portion of the first axial end extends at least partially into the opening, and a second portion of the first axial end abuts against the first and second edges.

[0029] Other application areas will become apparent from the descriptions provided herein. The descriptions and specific examples in this overview are intended for illustrative purposes only and are not intended to limit the scope of this disclosure. Attached Figure Description

[0030] The accompanying drawings described herein are for illustrative purposes only, and not for all possible implementations, and are not intended to limit the scope of this disclosure.

[0031] Figure 1 This is a cross-sectional view of a compressor with an intake fitting based on the principles of this disclosure;

[0032] Figure 2 yes Figure 1 A perspective view of the compressor housing, wherein the suction fitting is attached to the housing;

[0033] Figure 3 yes Figure 1 A perspective view of the compressor housing, in which the suction fittings are disassembled from the housing;

[0034] Figure 4 It is along Figure 2 The cross-sectional view of the compressor housing taken by line 4-4;

[0035] Figure 5 This is a partial cross-sectional view of the compressor housing, with the suction fitting disassembled from the housing;

[0036] Figure 6 This is a partial cross-sectional view of the compressor housing, in which the suction fitting is attached to the housing;

[0037] Figure 7 It is along Figure 2 The cross-sectional view of the compressor housing taken by line 7-7;

[0038] Figure 8 This is a partial perspective view of the compressor housing, in which the suction fitting is attached to the housing; and

[0039] Figure 9 This is another partial perspective view of the compressor housing, in which the suction fitting is attached to the housing.

[0040] In each figure of the accompanying drawings, the corresponding reference numerals indicate the corresponding parts. Detailed Implementation

[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings.

[0042] These exemplary embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those skilled in the art. Numerous specific details, such as examples of particular components, apparatuses, and methods, are set forth to provide a thorough understanding of embodiments of this disclosure. It will be apparent to those skilled in the art that specific details are not required, that exemplary embodiments may be implemented in many different forms, and none should be construed as limiting the scope of this disclosure. In some exemplary embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.

[0043] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. As used herein, the singular forms “a,” “an,” and “the” may also be intended to include the plural forms unless the context clearly indicates otherwise. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the particular order discussed or illustrated, unless specifically indicated as such. It should also be understood that additional or alternative steps may be employed.

[0044] When an element or layer is referred to as “on another element or layer,” “joined to,” “connected to,” or “linked to” another element or layer, the element or layer may be directly on, joined to, connected to, or linked to the other element or layer, or there may be intermediate elements or layers present. In contrast, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” or “directly linked to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements (e.g., “between” vs. “directly between,” “adjacent” vs. “directly adjacent,” etc.) should be interpreted in the same manner. As used herein, the term “and / or” includes any and all combinations of one or more of the associated enumerations.

[0045] Although the terms first, second, third, etc., may be used herein to describe various elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as “first,” “second,” and other numerical terms used herein do not imply order or sequence. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed below may be referred to as a second element, component, region, layer, or segment.

[0046] For ease of description, spatial relative terms such as “inside,” “outside,” “below,” “under,” “below,” “above,” “above,” etc., are used herein to describe the relationship between one element or feature as illustrated in the accompanying drawings and another element or feature (or other elements or features). Spatial relative terms may be intended to cover different orientations of the device in use or operation other than those depicted in the accompanying drawings. For example, if the device in the accompanying drawings is flipped, an element described as “below” or “under” other elements or features will be oriented “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations) and the spatial relative descriptors used herein may be interpreted accordingly.

[0047] like Figure 1 As shown, a compressor 10 is provided, and the compressor 10 may include a hermetically sealed housing assembly 12, a first bearing housing assembly 14 and a second bearing housing assembly 16, a motor assembly 18, a compression mechanism 20, a discharge port or fitting 24, and a suction port or fitting 28.

[0048] like Figure 1 As shown, housing assembly 12 can form a compressor housing and may include a cylindrical housing 32, an end cap 34 at the upper end of the cylindrical housing 32, a laterally extending partition 36, and a base 38 at the lower end of the cylindrical housing 32. The housing 32 and base 38 can cooperate to define an intake pressure chamber 39. The end cap 34 and partition 36 can define an exhaust pressure chamber 40. The partition 36 can separate the exhaust pressure chamber 40 from the intake pressure chamber 39. An exhaust pressure passage 43 can extend through the partition 36 to provide communication between the compression mechanism 20 and the exhaust pressure chamber 40.

[0049] The first bearing housing assembly 14 may be disposed within the suction pressure chamber 39 and may be fixed relative to the housing 32. The first bearing housing assembly 14 may include a first main bearing housing 48 and a first bearing 49. The first main bearing housing 48 may house the first bearing 49 therein. The first main bearing housing 48 may be fixedly engaged with the housing 32 and may axially support the compression mechanism 20.

[0050] like Figure 1 As shown, the motor assembly 18 can be disposed within the intake pressure chamber 39 and can include a stator 60 and a rotor 62. The stator 60 can be press-fitted into the housing 32. The rotor 62 can be press-fitted onto the drive shaft 64 and can transmit rotational power to the drive shaft 64. The drive shaft 64 can be rotatably supported by a first bearing housing assembly 14 and a second bearing housing assembly 16. The drive shaft 64 may include an eccentric crank pin 66 having a crank pin flat portion.

[0051] Compression mechanism 20 may be disposed within intake pressure chamber 39 and may include a moving scroll 70 and a stationary scroll 72. The first scroll member or moving scroll 70 may include an end plate 74 and a helical scroll 76 extending from the end plate 74. A cylindrical hub 80 may project downward from the end plate 74 and may include a first bearing 49 and an unloading bushing 82 disposed therein. A crank pin flat portion may drively engage with a flat surface in a portion of the bore to provide a radially adapted drive arrangement. A cross-ring coupling 84 may engage with the moving scroll 70 and the bearing housing 48 to prevent relative rotation between them.

[0052] like Figure 1As shown, the second scroll member or stationary scroll 72 may include an end plate 86 and a helical scroll 88 projecting downward from the end plate 86. The helical scroll 88 may engage the helical scroll 76 of the moving scroll 70 in an engaging manner, thereby creating a series of moving fluid cavities. The fluid cavities defined by the helical scrolls 76, 88 may decrease in volume as they move from a radially outer position (at suction pressure) to a radially intermediate position (at intermediate pressure) and finally to a radially inner position (at discharge pressure) throughout the compression cycle of the compression mechanism 20.

[0053] like Figures 1 to 9 As shown, the suction fitting 28 may be a single, integral component. The suction fitting 28 supplies working fluid under suction pressure from the suction fitting 28 to the suction port 89 of the fixed vortex 72, allowing the working fluid to be directed into the radially outermost fluid chamber and subsequently compressed by the compression mechanism 20. The suction fitting 28 may be axially misaligned with the suction port 89 of the fixed vortex 72. For example, the suction fitting 28 may be positioned vertically below the suction port 89. The suction fitting 28 may be generally cylindrical and may be made of, for example, a metallic material (e.g., steel). The suction fitting 28 may be attached to the housing 32 at an opening 90 and may also extend at least partially into the opening 90.

[0054] like Figure 3 As shown, the opening 90 may be non-circular in shape and may be defined by a first edge 92, a second edge 94, a first arcuate surface 96, and a second arcuate surface 98. Figure 4 and Figure 7 As shown, the first edge 92 and the second edge 94 prevent the inhalation fitting 28 from extending into the inhalation pressure chamber 39. That is, the inhalation fitting 28 contacts each edge 92, 94 at a location outside the opening 90, thereby preventing the inhalation fitting 28 from extending into the inhalation pressure chamber 39. The first edge 92 may have a first planar surface 100, and the second edge 94 may be opposite the first edge 92 and have a second planar surface 102. The second planar surface 102 may face the first planar surface 100. It should also be understood that the outer surface 99 near the first edge 92 and the second edge 94 prevents the inhalation fitting 28 from contacting the first planar surface 100 and the second planar surface 102.

[0055] The first arcuate surface 96 and the second arcuate surface 98 are opposite to each other and can mate with the first edge 92 and the second edge 94 to define a circular shape. Each of the first arcuate surface 96 and the second arcuate surface 98 is located between the first edge 92 and the second edge 94. Figures 3 to 5 as well as Figure 7 ).like Figure 4As shown, when the suction fitting 28 is received in the opening 90, the suction fitting 28 abuts (i.e., contacts) the first arcuate surface 96 and the second arcuate surface 98. In this way, movement of the suction fitting 28 in the axial direction (up or down relative to the housing 32) or the tangential direction (from one side to the other relative to the housing 32) is prevented. The length of each of the first arcuate surface 96 and the second arcuate surface 98 is greater than the length of each of the first planar surface 100 and the second planar surface 102.

[0056] The inhalation fitting 28 may include a housing attachment section 106, a pipe attachment section 108, and a transition section 110. The thickness of the housing attachment section 106 may be greater than the thickness of the pipe attachment section 108 and the thickness of the transition section 110. The housing attachment section 106 has a first outer diameter surface 112 and a first inner diameter surface 114. Figure 4 and Figure 6 As shown, the axial end 115 of the housing attachment segment 106 is joined (i.e. welded) to the housing 32 such that the first outer diameter surface 112 contacts the first arcuate surface 96 and the second arcuate surface 98, and the axial end surface 116 (located outside the opening 90) contacts the first edge 94 and the second edge 96. In other words, a portion of the axial end 115 of the housing attachment segment 106 extends at least partially into the opening 90, such that only a portion of the axial end surface 116 contacts the outer surface 99 of the edges 92, 94, and only a portion of the first outer diameter surface 112 contacts the first arcuate surface 96 and the second arcuate surface 98. The edges 92, 94 prevent the housing attachment segment 106 from extending through the opening 90 and into the suction pressure chamber 39.

[0057] The pipe attachment section 108 may be copper-plated and may be attached to an external pipe (not shown) via, for example, brazing, allowing fluid flowing through the external pipe to flow (via the suction fitting 28, the suction pressure chamber 39, and the suction port 89) to the compression chamber. The pipe attachment section 108 has a second outer diameter surface 118 and a second inner diameter surface 120. (As...) Figure 4 As shown, the diameter D1 of the second outer diameter surface 118 is smaller than the diameter D2 of the first outer diameter surface 112. The diameter D3 of the second inner diameter surface 120 is smaller than the diameter D4 of the first inner diameter surface 114.

[0058] The transition section 110 is located between the shell attachment section 106 and the pipe attachment section 108, and has a third outer diameter surface 122 and a third inner diameter surface 124. The diameter D5 of the third outer diameter surface 122 is smaller than the diameter D2 of the first outer diameter surface 112 and the diameter D1 of the second outer diameter surface 118. The diameter D6 of the third inner diameter surface 124 is smaller than the diameter D4 of the first inner diameter surface 114 and the diameter D3 of the second inner diameter surface 120.

[0059] One advantage of the compressor 10 of this disclosure is that the suction fitting 28, with its varying thicknesses, facilitates attachment to both the housing 32 and an external conduit (not shown). Specifically, the thickness of the housing attachment section 106 facilitates welding the suction fitting 28 to the housing 32, and the thickness of the conduit attachment section 108 facilitates brazing the suction fitting 28 to the external conduit. In other words, it is advantageous for the housing attachment section 106 of the suction fitting 28 to have a greater thickness to facilitate welding the suction fitting 28 to the housing 32, and for the conduit attachment section 108 of the suction fitting 28 to have a smaller thickness to facilitate brazing the suction fitting 28 to the external conduit. Another advantage of the compressor 10 of this disclosure is that the opening 90 of the housing 32 is at least partially defined by a first edge 92 and a second edge 94, as well as arcuate surfaces 96, 98, which facilitates the positioning of the suction fitting 28 relative to the housing 32 and facilitates the attachment (i.e., welding) of the suction fitting 28 to the housing 32.

[0060] It should be understood that other accessories of the compressor 10 may be attached to corresponding openings in the housing assembly 12 having similar or identical features or characteristics to the opening 90 to which the suction accessory 28 is attached. For example, the discharge accessory 24 and / or the fluid injection accessory (accessory that provides working fluid directly to the intermediate position of the compression chamber) may be attached to the housing assembly 12 at corresponding openings that are partially defined by opposing edges similar or identical to edges 92, 94 and / or opposing arcuate surfaces similar or identical to arcuate surfaces 96, 98. In other words, the discharge accessory 24 and / or the fluid injection accessory may have similar or identical features to the suction accessory 28 described above and shown in the figures, and the discharge accessory 24 and / or the fluid injection accessory may be attached to the housing assembly 12 at corresponding openings similar or identical to opening 90.

[0061] The foregoing description of embodiments has been provided for purposes of illustration and description. This description is not intended to be exhaustive or limiting of this disclosure. Elements or features of a particular embodiment are generally not limited to that particular embodiment, but rather, even if not specifically shown or described, elements or features of a particular embodiment are interchangeable where applicable and can be used in selected embodiments. Elements or features of a particular embodiment may also vary in many ways. These variations are not considered to depart from this disclosure, and all such modifications are intended to be included within the scope of this disclosure.

Claims

1. A compressor, the compressor comprising: A housing, the housing including an opening and defining a chamber; A compression mechanism, wherein the compression mechanism is disposed within the chamber of the housing; as well as The accessory is attached to the housing at an opening, and the working fluid flowing through the accessory flows to the compression mechanism. The opening is partially defined by a first edge and a second edge, the first edge including a first planar surface and the second edge including a second planar surface facing the first planar surface, a first portion of the fitting extending at least partially into the opening, and a second portion of the fitting abutting against the first edge and the second edge. The second portion of the fitting abuts against the first and second edges at a location outside the opening to prevent the outer diameter surface of the fitting from contacting the first and second planar surfaces. Wherein, the first part of the accessory is a first part of the axial end surface of the accessory, and the second part of the accessory is a second part of the axial end surface of the accessory.

2. The compressor according to claim 1, wherein, The opening is non-circular in shape.

3. The compressor according to claim 1, wherein, The opening has opposing arcuate surfaces, and wherein the outer diameter surface of the fitting abuts against at least one of the opposing arcuate surfaces.

4. The compressor according to claim 1, wherein, The accessory is an inhalation accessory, and the working fluid flowing through the inhalation accessory flows to the compression mechanism.

5. The compressor according to claim 1, wherein, The opening has opposing arcuate surfaces, and each of the first edge and the second edge is disposed between the opposing arcuate surfaces.

6. A compressor, said compressor comprising: A housing, the housing including an opening and defining a chamber; A compression mechanism, wherein the compression mechanism is disposed within the chamber of the housing; as well as An accessory, which is attached to the housing at an opening and is at least partially disposed outside the housing, wherein working fluid flows between the accessory and the compression mechanism. The opening is partially defined by a first edge having a first planar surface, a second edge having a second planar surface, and an arcuate surface disposed between the first planar surface and the second planar surface. Wherein, the second planar surface faces the first planar surface, and wherein the first edge and the second edge prevent the accessory from contacting the first planar surface and the second planar surface, and allow the accessory to contact the arcuate surface. The first portion of the fitting extends at least partially into the opening, and the second portion of the fitting abuts against the first and second edges at a location outside the opening. Wherein, the first part of the accessory is a first part of the axial end surface of the accessory, and the second part of the accessory is a second part of the axial end surface of the accessory.

7. The compressor according to claim 6, wherein, The accessory includes a first axial end having a first thickness and a second axial end having a second thickness, the first thickness being greater than the second thickness, and wherein the first axial end includes a first portion extending at least partially into the opening and a second portion contacting the first edge and the second edge.

8. The compressor according to claim 7, wherein, The first axial end has a first outer diameter surface, and the second axial end has a second outer diameter surface, wherein the first diameter of the first outer diameter surface is greater than the second diameter of the second outer diameter surface.

9. The compressor according to claim 8, wherein, The accessory has a transition portion located between the first axial end and the second axial end and having a third outer diameter surface, wherein the third diameter of the third outer diameter surface is smaller than the first diameter and the second diameter.

10. The compressor according to claim 9, wherein, The opening has another arcuate surface opposite to the arcuate surface, and wherein the outer diameter surface of the fitting abuts against at least one of the opposing arcuate surfaces.

11. The compressor according to claim 10, wherein, The fitting is made of steel, and wherein the first axial end is attached to the housing and the second axial end has a copper-plated coating.

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