Cylinder assembly, method of mounting a cylinder, and compressor

Abstract

The application provides a cylinder assembly, a mounting method of a cylinder and a compressor. The cylinder assembly comprises a cylinder, a vane slot and a through hole are arranged on the cylinder wall of the cylinder, the first end of the through hole communicates with the vane slot along the axial direction of the through hole, a vane is arranged in the vane slot and slides along the radial direction of the vane slot, an outwardly expanding connecting pipe is inserted into the second end of the through hole, and a spring comprises a first end and a second end, the diameter of the second end is larger than that of the first end, the first end of the spring extends to the inside of the cylinder along the radial direction of the cylinder and contacts the vane, and the second end of the spring is limited to the inner wall of the outwardly expanding connecting pipe. The application can effectively enhance the sealing performance of the spring hole for exhausting air to the outside, improve the efficiency and precision of spring pressing in the process, and is convenient to mount and reliable in structure.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment, and more specifically, to cylinder assemblies, cylinder mounting methods, and compressors. Background Technology

[0002] Most compressors used in refrigeration equipment on the market are rotary compressors, whose main components include a housing assembly, motor assembly, pump assembly, and receiver assembly. The pump assembly is the heart of the compressor, and its main components include upper and lower cylinder heads, cylinders, intermediate plate, crankshaft, vanes, dust collector, piston, and blades. Driven by the crankshaft, the piston rotates at high speed within the cylinder, forming two sealed chambers: a low-pressure chamber and a high-pressure chamber. Low-pressure, low-temperature gas enters the low-pressure chamber through the intake port. The piston's movement converts the low-pressure, low-temperature gas into high-pressure, high-temperature gas, which is then discharged from the high-pressure chamber, thus achieving gas compression. Throughout the compression process, the blades maintain close contact with the piston to ensure proper compression. A spring installed in the spring hole holds the blades in place, ensuring continuous close contact between the blades and the piston.

[0003] Currently, most cylinders prevent the spring from falling off by using an interference fit between the spring tail and the spring hole. However, for models with large housing diameters, the increased spring length also increases the spring's instability, making it prone to problems such as spring jumping, bending, or breaking. Moreover, this structure is not suitable for structures that use the spring hole for exhaust.

[0004] Therefore, the present invention provides a cylinder assembly, a cylinder mounting method, and a compressor. Summary of the Invention

[0005] In view of the problems in the prior art, the purpose of the present invention is to provide a cylinder assembly, a cylinder installation method and a compressor, which overcomes the difficulties of the prior art, can effectively enhance the sealing of the spring hole for exhaust to the outside, and can also improve the efficiency and accuracy of spring pressing in the process, and is easy to install and has a reliable structure.

[0006] Embodiments of the present invention provide a cylinder assembly, comprising:

[0007] A cylinder, wherein the cylinder wall is provided with a vane groove and a through hole, and the first end of the through hole is connected to the vane groove along the axial direction of the through hole;

[0008] A blade is disposed within the blade groove and slides radially along the blade groove;

[0009] An externally expanding connecting tube is inserted into the second end of the through hole;

[0010] A spring comprising a first end and a second end, the diameter of the second end being larger than the diameter of the first end, the first end of the spring extending radially into the cylinder and contacting the blade, and the second end of the spring being confined to the inner wall of the outwardly expanding connecting pipe.

[0011] Preferably, the second end of the through hole has a chamfer at the connection with the cylinder wall of the cylinder, and the outwardly expanding connecting pipe enters the through hole through the chamfer and is interference-fitted with the inner wall of the through hole.

[0012] Preferably, the cylinder wall of the cylinder is further provided with an outward expansion hole, the outward expansion hole is connected to the end of the through hole away from the blade groove along the radial direction of the cylinder, the diameter of the outward expansion hole is larger than the diameter of the through hole, and the outward expansion connecting pipe is inserted into the inner circumference of the outward expansion hole.

[0013] Preferably, the second end of the spring is interference-fitted with the inner wall of the outwardly expanding connecting tube.

[0014] Preferably, the expanding connecting tube includes a first end and a second end with a diameter greater than the first end, and the first end of the expanding connecting tube is inserted into the expanding hole.

[0015] Preferably, the outwardly expanding connecting tube is deformed and expanded by the interference force of the second end of the spring, and is sealed to the inner wall of the through hole.

[0016] Preferably, the expanding connecting pipe includes a first end, a diameter-changing transition portion, and a second end. The diameter of the first end of the expanding connecting pipe is smaller than the diameter of the second end of the expanding connecting pipe, and the diameter-changing transition portion is connected to the first end and the second end respectively.

[0017] Preferably, the inner wall of the first end of the outwardly expanding connecting pipe is concentric and has the same diameter as the inner wall of the through hole.

[0018] Embodiments of the present invention also provide a method for installing a cylinder, using the above-described cylinder assembly, comprising the following steps:

[0019] The externally expanding connecting pipe is pre-installed into the through hole of the cylinder;

[0020] The spring is pre-installed into the second end of the externally expanding connecting pipe, with the first end of the spring pointing towards the inner cavity of the cylinder;

[0021] The spring and the externally expanding connecting tube are simultaneously pressed into the inner cavity of the cylinder by the pressure head until the second end of the spring is in interference fit with the inner wall of the externally expanding connecting tube, and the externally expanding connecting tube is in interference fit with the inner wall of the through hole of the cylinder.

[0022] An embodiment of the present invention also provides a compressor, characterized in that it includes the cylinder assembly described above.

[0023] The cylinder assembly, cylinder installation method, and compressor of the present invention can effectively enhance the sealing of the spring hole for exhaust to the outside, while also improving the efficiency and accuracy of spring pressing in the process, and are easy to install and have a reliable structure. Attached Figure Description

[0024] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the cylinder assembly of the present invention.

[0026] Figure 2 This is a side view of the cylinder assembly of the present invention.

[0027] Figure 3 for Figure 2 Sectional view along the AA direction.

[0028] Figure Labels

[0029] 1 cylinder

[0030] 11 Blade Groove

[0031] 12 Through Holes

[0032] 13 Externally enlarged hole

[0033] 2 blades

[0034] 3 springs

[0035] 31 First End

[0036] 32 Second End

[0037] 4. External expansion connecting pipe

[0038] 41 First End

[0039] 42. Variable diameter transition section

[0040] 43 Second End Detailed Implementation

[0041] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand the other advantages and effects of this application from the content disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0042] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0043] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0044] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] To clearly illustrate this application, devices unrelated to the description are omitted, and the same or similar constituent elements throughout the specification are given the same reference numerals.

[0046] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0047] When we say that a device is "above" another device, this can mean that it is directly above the other device, or it can mean that other devices are present in between. Conversely, when we say that a device is "directly" "above" another device, there are no other devices present in between.

[0048] Although the terms first, second, etc., are used in some instances herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0049] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this application. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in the specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0050] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the content of this present application, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0051] Figure 1 This is a schematic diagram of the cylinder assembly of the present invention. Figure 2 This is a side view of the cylinder assembly of the present invention. Figure 3 for Figure 2 A sectional view along the AA direction. (e.g.) Figures 1 to 3As shown, an embodiment of the present invention provides a cylinder assembly, including: a cylinder 1, a vane 2, an external expansion connecting pipe 4, and a spring 3. The cylinder 1 has a vane groove 11 and a through hole 12 on its cylinder wall. The first end of the through hole 12 communicates axially with the vane groove 11 along the through hole 12. The second end of the through hole 12 has a chamfer (not shown) at its connection with the cylinder wall of the cylinder 1. The chamfer serves as a guide and positioning feature of the external expansion connecting pipe 4. The external expansion connecting pipe 4 enters the through hole 12 through the chamfer and is press-fitted with the inner wall of the through hole 12. The vane 2 is disposed within the vane groove 11 and slides radially along the vane groove 11. The external expansion connecting pipe 4 is inserted into the second end of the through hole 12. The spring 3 includes a first end 31 and a second end 32. The diameter of the second end 32 is larger than the diameter of the first end 31. The first end 31 of the spring 3 extends radially into the cylinder 1 and contacts the vane 2. The second end 32 of the spring 3 is confined within the inner wall of the external expansion connecting pipe 4, but is not limited thereto. In a preferred embodiment, the cylinder wall of the cylinder 1 is further provided with an outward expansion hole 13. The outward expansion hole 13 is connected radially to one end of the through hole 12 away from the blade groove 11. The diameter of the outward expansion hole 13 is larger than the diameter of the through hole 12, which is beneficial for inserting the outward expansion connecting pipe 4 into the inner circumference of the outward expansion hole 13, but is not limited thereto.

[0052] In a preferred embodiment, the second end 32 of the spring 3 is interference-fitted with the inner wall of the outwardly expanding connecting pipe 4, but this is not a limitation.

[0053] In a preferred embodiment, the expansion connecting tube 4 includes a first end 41 and a second end 43 with a diameter greater than that of the first end 41, so as to allow the first end 41 of the expansion connecting tube 4 to be inserted into the expansion hole 13, but is not limited thereto.

[0054] In a preferred embodiment, the expanding connecting pipe 4 is deformed and expanded by the interference force of the second end 32 of the spring 3, sealing with the inner wall of the through hole 12, but this is not a limitation. The present invention uses an interference fit between the expanding connecting pipe 4 and the cylinder through hole 12, and simultaneously uses an interference fit between the spring 3 and the expanding connecting pipe 4. The expanding connecting pipe 4 undergoes slight deformation under the internal interference force, which not only makes the connection between the expanding connecting pipe 4 and the cylinder through hole 12 more secure, but also makes the seal between the expanding connecting pipe 4 and the cylinder through hole 12 tighter, thus enhancing the airtightness of the cylinder.

[0055] In a preferred embodiment, the expanding connecting pipe 4 includes a first end 41, a diameter-changing transition portion 42, and a second end 43. The diameter of the first end 41 of the expanding connecting pipe 4 is smaller than the diameter of the second end 43 of the expanding connecting pipe 4. The diameter-changing transition portion 42 connects the first end 41 and the second end 43 respectively. The diameter of the diameter-changing transition portion 42 can vary uniformly from the end connected to the first end 41 to the end connected to the second end 43, but is not limited thereto.

[0056] In a preferred embodiment, the inner wall of the first end 41 of the expanding connecting pipe 4 is concentric and has the same diameter as the inner wall of the through hole 12, but this is not a limitation. In other embodiments, the inner wall of the first end 41 of the expanding connecting pipe 4 may also be concentric with the inner wall of the through hole 12, but the inner diameter of the first end 41 is larger than the inner diameter of the through hole 12.

[0057] This invention uses an interference fit between the externally expanding connecting pipe 4 and the cylinder through hole 12, as well as an interference fit between the spring 3 and the externally expanding connecting pipe 4. The externally expanding connecting pipe 4 undergoes slight deformation due to the internal interference force, which not only makes the connection between the externally expanding connecting pipe 4 and the cylinder through hole 12 more secure but also ensures a tighter seal, thus enhancing the airtightness of the cylinder. This invention features minimal structural changes, is easy to install, and effectively improves the sealing performance when the spring hole is used for exhausting air to the outside.

[0058] Embodiments of the present invention also provide a method for installing a cylinder, characterized in that it employs a cylinder assembly as described in claim 1, comprising the following steps:

[0059] S110. Pre-install the external expansion connecting pipe 4 into the through hole 12 of the cylinder 1.

[0060] S120. Pre-install spring 3 into the second end 43 of the external expansion connecting pipe 4, with the first end 31 of spring 3 pointing towards the inner cavity of the cylinder.

[0061] S130. The spring 3 and the outer expansion connecting pipe 4 are pressed into the inner cavity of the cylinder simultaneously by the pressure head until the second end 32 of the spring 3 is in interference fit with the inner wall of the outer expansion connecting pipe 4, and the outer expansion connecting pipe 4 is in interference fit with the inner wall of the through hole 12 of the cylinder.

[0062] S140. Remove the pressure head from the external expansion connection pipe 4.

[0063] This invention requires the use of a pressure head that matches the inner diameter of the external expansion connecting pipe 4 and the second end of the spring 3 for installation. During installation, the external expansion connecting pipe 4 is first pre-installed with the cylinder through hole 12. At this time, the chamfer of the through hole 12 serves as a positioning function for the external expansion connecting pipe 4, facilitating the pre-installation and pressing process of the external expansion connecting pipe 4 with the cylinder through hole 12. Then, the spring 3 is pre-installed into the external expansion connecting pipe 4, which can prevent the spring 3 from being misaligned or improperly pressed in during assembly. Finally, the pressure head is inserted, simultaneously abutting against the external expansion connecting pipe 4 and the spring 3. By controlling the stroke of the pressure head, the external expansion connecting pipe 4 and the spring 3 are pressed in at once. In this way, the inside of the external expansion connecting pipe 4 is subjected to interference force, resulting in slight deformation. This not only makes the connection between the external expansion connecting pipe 4 and the cylinder through hole 12 more secure, but also makes the seal between the external expansion connecting pipe 4 and the cylinder through hole 12 tighter, which is beneficial to enhancing the airtightness of the cylinder. Furthermore, pressing the external expansion connecting pipe 4 and the spring 3 into the through hole 12 of the cylinder simultaneously simplifies the installation process and improves installation efficiency compared to pressing the external expansion connecting pipe 4 into the through hole 12 of the cylinder and the spring 3 into the external expansion connecting pipe 4 in separate steps.

[0064] It is understood that the main process step achieving the above-mentioned technical effect is S130. Even if the order of steps S110 and S120 is reversed, the actual technical effect achieved is the same. Therefore, performing step S120 before step S110 is a simple deduction without departing from the inventive concept of this case and falls within the protection scope of this invention. The process design of this invention is convenient to install and can effectively improve the efficiency and accuracy of spring pressing.

[0065] Embodiments of the present invention also provide a compressor including the cylinder assembly described above. Since the compressor of the present invention employs the aforementioned cylinder assembly, its structural features, technology, and effects are as described above, and will not be repeated here.

[0066] In summary, the purpose of this invention is to provide a cylinder assembly, a cylinder installation method, and a compressor, which can effectively enhance the sealing of the spring hole for exhaust to the outside, while also improving the efficiency and accuracy of spring pressing in the process, and is easy to install and has a reliable structure.

[0067] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A cylinder assembly, characterized in that, include: A cylinder (1) has a blade groove (11) and a through hole (12) on its cylinder wall. The first end of the through hole (12) is connected to the blade groove (11) along the axial direction of the through hole (12). A blade (2) is disposed in the blade groove (11) and slides radially along the blade groove (11); An external expansion connecting pipe (4) is inserted into the second end of the through hole (12). The cylinder wall of the cylinder (1) is also provided with an external expansion hole (13). The external expansion hole (13) is connected to the end of the through hole (12) away from the blade groove (11) along the radial direction of the cylinder (1). The diameter of the external expansion hole (13) is larger than the diameter of the through hole (12). The external expansion connecting pipe (4) is inserted into the inner circumference of the external expansion hole (13). A spring (3) includes a first end (31) and a second end (32), the diameter of the second end (32) being larger than the diameter of the first end (31). The first end (31) of the spring (3) extends radially into the cylinder (1) and contacts the blade (2). The second end (32) of the spring (3) is confined to the inner wall of the outwardly expanding connecting pipe (4).

2. The cylinder assembly as claimed in claim 1, characterized in that, The second end of the through hole (12) has a chamfer at the connection between it and the cylinder wall of the cylinder (1). The external expansion connecting pipe (4) enters the through hole (12) through the chamfer and is interference-fitted with the inner wall of the through hole (12).

3. The cylinder assembly as claimed in claim 1, characterized in that, The second end (32) of the spring (3) is interference-fitted with the inner wall of the outward expansion connecting pipe (4).

4. The cylinder assembly as claimed in claim 1, characterized in that, The external expansion connecting pipe (4) includes a first end (41) and a second end (43) with a diameter greater than that of the first end (41). The first end (41) of the external expansion connecting pipe (4) is inserted into the external expansion hole (13).

5. The cylinder assembly as claimed in claim 4, characterized in that, The external expansion connecting pipe (4) is deformed and expanded by the interference force of the second end (32) of the spring (3), and is sealed to the inner wall of the through hole (12).

6. The cylinder assembly as claimed in claim 1, characterized in that, The external expansion connecting pipe (4) includes a first end (41), a variable diameter transition section (42) and a second end (43). The diameter of the first end (41) of the external expansion connecting pipe (4) is smaller than the diameter of the second end (43) of the external expansion connecting pipe (4). The variable diameter transition section (42) connects the first end (41) and the second end (43) respectively.

7. The cylinder assembly as claimed in claim 6, characterized in that, The inner wall of the first end (41) of the external expansion connecting pipe (4) is concentric and has the same diameter as the inner wall of the through hole (12).

8. A method for installing a cylinder, characterized in that, Using a cylinder assembly as described in claim 1, the method includes the following steps: The external expansion connecting pipe (4) is pre-installed into the through hole (12) of the cylinder (1); The spring (3) is pre-installed into the second end (43) of the external expansion connecting pipe (4), and the first end (31) of the spring (3) points to the inner cavity of the cylinder; The spring (3) and the external expansion connecting pipe (4) are pressed into the inner cavity of the cylinder by the pressure head until the second end (32) of the spring (3) is in interference fit with the inner wall of the external expansion connecting pipe (4), and the external expansion connecting pipe (4) is in interference fit with the inner wall of the through hole (12) of the cylinder.

9. A compressor, characterized in that, Includes the cylinder assembly as described in claim 1.

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