Lower shell cover assembly and compressor

Abstract

The invention belongs to the technical field of compressors, and discloses a lower shell cover assembly and a compressor. The lower shell cover assembly comprises a lower shell cover, a fixing ring, an oil level sensor and a sealing piece, a mounting hole is formed in the lower shell cover, the fixing ring is fixedly inserted into the mounting hole, the oil level sensor comprises a guide piece, the guide piece is fixedly inserted into the fixing ring, and the sealing piece is arranged between the fixing ring and the guide piece and used for blocking a gap between the fixing ring and the guide piece; the compressor comprises the lower shell cover assembly and further comprises a shell, the fixing ring and the oil level sensor are both arranged in the shell, and the lower shell cover is fixedly connected with the shell. According to the lower shell cover assembly, after the fixing ring is assembled on the lower shell cover, the oil level sensor can be integrally installed on the fixing ring, the oil level sensor does not need to be disassembled, welded and assembled, the process takt of the production process is saved, the assembling steps are simplified, and the assembling efficiency of the whole compressor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a lower shell cover and a compressor. Background Art

[0002] Compressors have extremely high requirements for sealing. Therefore, to ensure long-term reliable and effective operation of the compressor, the compressor casing is generally welded. For compressors that need to monitor the oil level, an oil level sensor with a magnetic float is used. However, since the sensing part is encapsulated and made of glass or thin metal sheets, it cannot withstand the high temperatures caused by welding, which will cause functional failure. Generally, the guide, magnetic float, damper and other parts of the oil level sensor are disassembled. Because the magnetic float has a low temperature resistance, the guide made of non-magnetic stainless steel or copper is usually fixed to the lower shell cover by welding, and then the other components such as the magnetic float are assembled to avoid high-temperature heat transfer during the welding of the guide. The above process requires the oil level sensor to be disassembled, welded, and reassembled, which complicates the process rhythm of the production process, makes the assembly steps complicated, and affects the overall assembly efficiency of the compressor. Summary of the Invention

[0003] The purpose of the present invention is to provide a lower shell cover assembly that simplifies assembly steps, saves process time in the production process, and improves assembly efficiency.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A lower housing cover assembly, comprising:

[0006] A lower shell cover, wherein the lower shell cover is provided with a mounting hole;

[0007] A fixing ring, fixedly inserted into the mounting hole;

[0008] The oil level sensor comprises a guide member, wherein the guide member is fixedly plugged into the fixing ring;

[0009] A sealing member is provided between the fixing ring and the guide member and is used for sealing the gap between the fixing ring and the guide member.

[0010] Preferably, the lower end of the guide member is provided with a fixed portion and an inserting portion connected to each other, the fixed portion is supported on the upper end surface of the fixing ring, and the inserting portion is inserted into the fixing ring.

[0011] Preferably, the plug-in portion is provided with an external thread, the inner circumferential wall of the fixing ring is correspondingly provided with an internal thread, and the plug-in portion is threadedly connected to the fixing ring.

[0012] Preferably, the outer end surface of the lower shell cover, the plug-in end surface of the fixing ring and the plug-in end surface of the plug-in portion are arranged flush.

[0013] Preferably, the sealing member is provided between the upper end surface of the fixing ring and the fixing portion, and / or,

[0014] The sealing member is arranged between the inner peripheral wall of the fixing ring and the plug-in portion.

[0015] Preferably, the sealing member is configured as a sealing ring, an embedding groove is provided on the upper end surface of the fixing ring and / or the inner peripheral wall of the fixing ring, and the sealing ring is arranged in the embedding groove.

[0016] Preferably, the sealing ring is made of rubber.

[0017] Preferably, the outer periphery of the fixing ring includes a first ring portion and a second ring portion arranged in a stepped shape, the diameter of the first ring portion is larger than that of the second ring portion, the first ring portion is supported on the inner wall of the lower shell cover, and the second ring portion is inserted into the mounting hole.

[0018] Preferably, the fixing ring and the lower shell cover are welded.

[0019] The present invention also provides a lower shell cover assembly, including the above-mentioned lower shell cover assembly, which simplifies the assembly steps, saves the process cycle of the production process, and improves the overall assembly efficiency of the compressor.

[0020] A compressor comprises the lower shell cover assembly described in any one of the above items, and also comprises a main shell, wherein the lower shell cover is fixedly connected to the main shell.

[0021] Beneficial effects:

[0022] The lower housing cover assembly provided by the present invention features a retaining ring inserted into the mounting hole of the lower housing cover. The guide member of the oil level sensor is fixedly inserted into the retaining ring, and a seal seals the gap between the retaining ring and the guide member. After the retaining ring is assembled on the lower housing cover, the oil level sensor can be installed integrally onto the retaining ring. This arrangement allows the oil level sensor to be purchased as a whole, eliminating the need for disassembly, welding, and assembly operations. This reduces production time, simplifies assembly steps, and improves assembly efficiency.

[0023] The compressor provided by the present invention includes the above-mentioned lower shell cover assembly. During the assembly process, there is no need to disassemble, weld and assemble the oil level sensor, which saves the process time of the production process, simplifies the assembly steps and improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1is a structural schematic diagram of a lower housing cover assembly provided by an embodiment of the present invention;

[0025] Figure 2 is an exploded schematic diagram of a lower housing cover assembly provided by one embodiment of the present invention;

[0026] Figure 3 is an exploded schematic diagram of a lower housing cover assembly provided by another embodiment of the present invention;

[0027] Figure 4 is a structural schematic diagram of a lower housing cover assembly provided by another embodiment of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the compressor provided by the present invention.

[0029] In the picture:

[0030] 1. Lower shell cover; 11. Mounting hole;

[0031] 2. Fixed ring; 201. Embedded groove; 21. First ring portion; 22. Second ring portion;

[0032] 3. Oil level sensor; 31. Guide member; 311. Fixing portion; 312. Connecting portion; 32. Limiting member;

[0033] 4. Seals;

[0034] 5. Main shell. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0036] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0037] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0039] This embodiment provides a lower housing cover assembly. Figures 1 to 4 As shown, the lower housing cover assembly includes a lower housing cover 1, a retaining ring 2, an oil level sensor 3, and a seal 4. The lower housing cover 1 defines a mounting hole 11. The retaining ring 2 is fixedly inserted into the mounting hole 11. The oil level sensor 3 includes a guide 31, which is fixedly inserted into the retaining ring 2. The seal 4 is disposed between the retaining ring 2 and the guide 31 to seal the gap between them.

[0040] In this embodiment, a retaining ring 2 is inserted into the mounting hole 11 of the lower housing cover 1. The guide member 31 of the oil level sensor 3 is fixedly inserted into the retaining ring 2, and the gap between the retaining ring 2 and the guide member 31 is sealed by a seal 4. After the retaining ring 2 is assembled on the lower housing cover 1, the oil level sensor 3 can be installed integrally onto the retaining ring 2. This arrangement allows the oil level sensor 3 to be purchased as a whole, eliminating the need for disassembly, welding, and assembly of the oil level sensor 3. This reduces production time, simplifies assembly steps, and improves assembly efficiency.

[0041] In addition, the above-mentioned structural setting also avoids the need to place and store the parts of the oil level sensor 3 separately due to excessive disassembly of the parts. The springs and other parts in the oil level sensor 3 are relatively small in size, and the volume may fall or be squeezed and entangled, resulting in waste of resources. The structure of this embodiment can also avoid the occurrence of the above-mentioned situation.

[0042] In this embodiment, the oil level sensor further includes a sensing element, which is disposed inside the guide element. The oil level is sensed by the cooperation between the magnetic float and the sensing element.

[0043] In this embodiment, the oil level sensor further includes a limiting member 32 provided at the upper end of the guide member 31 , and the limiting member 32 is used to limit the upper end of the guide member 31 .

[0044] In this embodiment, the lower end of the guide member 31 is provided with a connected fixing portion 311 and an inserting portion 312. The fixing portion 311 is supported on the upper end surface of the fixing ring 2, and the inserting portion 312 is inserted into the fixing ring 2. Specifically, when the guide member 31 is inserted into the fixing ring 2, the fixing portion 311 and the inserting portion 312 respectively contact the upper end surface and the ring hole of the fixing ring 2. The fixing portion 311 can bear the upper weight of the oil level sensor 3, providing reliable and stable support. The inserting portion 312 is fixedly inserted into the fixing ring 2, ensuring that the installation is properly inserted.

[0045] In this embodiment, the fixing portion 311 and the plug-in portion 312 are integrally formed, which has a simple structure and is easy to process and produce.

[0046] As an optional implementation, refer to Figure 3 As shown, the plug-in portion 312 is provided with external threads, and the inner circumferential wall of the fixing ring 2 is correspondingly provided with internal threads, thereby threadedly connecting the plug-in portion 312 to the fixing ring 2. Specifically, the threaded engagement between the plug-in portion 312 and the inner circumferential wall of the fixing ring 2 allows the guide member 31 to be connected to the fixing ring 2 simply by screwing, resulting in a simple structure and easy assembly. Furthermore, the internal and external threads between the plug-in portion 312 and the fixing ring 2 also enhance the sealing between the plug-in portion 312 and the fixing ring 2.

[0047] In some other optional embodiments, a metal fixing structure may be provided between the plug-in portion 312 and the fixing ring 2 , and the two may be fixed in an interference fit manner to achieve a sealed connection between the plug-in portion 312 and the fixing ring 2 .

[0048] In this embodiment, the outer end surface of the lower housing 1, the plugging end surface of the retaining ring 2, and the plugging end surface of the plugging portion 312 are aligned flush. This arrangement allows the outer end of the lower housing 1 to present a flat structure, avoiding uneven or jagged structures. Furthermore, using the alignment of the outer end surface of the lower housing 1, the plugging end surface of the retaining ring 2, and the plugging end surface of the plugging portion 312 as a reference allows for quick insertion and positioning of the retaining ring 2 and guide member 31.

[0049] In this embodiment, the outer circumference of the retaining ring 2 includes a first ring portion 21 and a second ring portion 22 arranged in a stepped pattern. The first ring portion 21 has a larger diameter than the second ring portion 22. The first ring portion 21 is supported by the inner wall of the lower housing cover 1, while the second ring portion 22 is inserted into the mounting hole 11. Specifically, when the retaining ring 2 is inserted into the mounting hole 11, the first ring portion 21 contacts the inner wall of the lower housing cover 1 at the outer edge of the mounting hole 11. That is, the retaining ring 2 is supported on the lower housing cover 1 by the first ring portion 21, while the second ring portion 22 is inserted into the mounting hole 11, completing the assembly of the retaining ring 2.

[0050] In this embodiment, the first ring portion 21 and the second ring portion 22 are integrally formed, which has a simple structure and is easy to process and produce.

[0051] In this embodiment, the retaining ring 2 is welded to the lower housing cover 1. This connection is highly efficient, reliable, and stable. Specifically, because the retaining ring 2 is welded to the lower housing cover 1 rather than directly welding the oil level sensor 3 to the lower housing cover 1, the oil level sensor 3 can be integrally assembled to the retaining ring 2 without being removed. This reduces production time, simplifies assembly steps, and improves assembly efficiency.

[0052] In some other optional embodiments, the fixing ring 2 and the lower shell cover 1 can also be fixed by gluing, interference fit, threaded fitting, etc., all of which can achieve a stable connection between the fixing ring 2 and the lower shell cover 1 and maintain good sealing between the fixing ring 2 and the lower shell cover 1.

[0053] In this embodiment, the seal 4 is disposed between the upper end surface of the fixing ring 2 and the fixing portion 311, and / or the seal 4 is disposed between the inner peripheral wall of the fixing ring 2 and the plug-in portion 312. Figures 1 to 3 As shown, the seal 4 is arranged between the inner peripheral wall of the fixing ring 2 and the plug-in portion 312; Figure 4 As shown, the seal 4 is disposed between the upper end surface of the fixing ring 2 and the fixing portion 311. Although not shown in the figures, in some other optional embodiments, a seal 4 is disposed between the upper end surface of the fixing ring 2 and the fixing portion 311, and between the inner peripheral wall of the fixing ring 2 and the plug-in portion 312, to further ensure sealing performance.

[0054] Specifically, the sealing member 4 is configured as a sealing ring. A groove 201 is defined on the upper end surface and / or the inner circumferential wall of the retaining ring 2, and the sealing ring is positioned within the groove 201. Specifically, the sealing ring is constructed of a deformable elastic material, and the depth of the groove 201 is less than the diameter of the sealing ring. During installation, the sealing ring is partially positioned outside the groove 201. During further assembly of the guide member 31, the outer circumferential wall of the guide member 31 compresses the sealing ring, effectively sealing the gap between the retaining ring 2 and the guide member 31.

[0055] Optionally, the sealing ring is made of rubber, which has good elasticity, wear resistance and sealing properties and is suitable for sealing.

[0056] In some alternative embodiments, when the lower housing cover 1 has a thicker wall, the retaining ring 2 may be omitted, and the inner wall of the mounting hole 11 of the lower housing cover 1 may be directly provided with internal threads. The inserting portion 311 of the guide member 31 is correspondingly provided with external threads. Inserting portion 311 directly plugs into mounting hole 1 and is threadedly connected to mounting hole 11, allowing for a direct connection between the lower housing cover 1 and the oil level sensor 3 without welding. Specifically, in this embodiment, the sealing member 4 is disposed between the inserting portion 311 and the inner wall of mounting hole 11.

[0057] This embodiment also provides a compressor. Figure 5 As shown, the compressor includes the aforementioned lower cover assembly and a main housing 5. The retaining ring 2 and oil level sensor 3 are both located within the main housing 5, and the lower cover 1 is fixedly connected to the main housing 5. Applying the aforementioned lower cover assembly to the compressor achieves all the benefits of the lower cover assembly. The compressor assembly process eliminates the need for disassembly, welding, and assembly of the oil level sensor 3, saving time in the production process, simplifying assembly steps, and improving assembly efficiency.

[0058] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A lower shell cover assembly, characterized in that: include: A lower shell cover (1), wherein the lower shell cover (1) is provided with a mounting hole (11); A fixing ring (2) is fixedly inserted into the mounting hole (11); The oil level sensor (3) comprises a guide member (31), wherein the guide member (31) is fixedly plugged into the fixing ring (2); A sealing member (4) is provided between the fixing ring (2) and the guide member (31) and is used for sealing the gap between the fixing ring (2) and the guide member (31).

2. The lower housing cover assembly according to claim 1, wherein: The lower end of the guide member (31) is provided with a fixed portion (311) and an inserting portion (312) connected to each other, the fixed portion (311) is supported on the upper end surface of the fixed ring (2), and the inserting portion (312) is inserted into the fixed ring (2).

3. The lower housing cover assembly according to claim 2, wherein: The plug-in portion (312) is provided with an external thread, and the inner peripheral wall of the fixing ring (2) is correspondingly provided with an internal thread, and the plug-in portion (312) is threadedly connected to the fixing ring (2).

4. The lower housing cover assembly according to claim 2, wherein: The outer end surface of the lower shell cover (1), the plug-in end surface of the fixing ring (2), and the plug-in end surface of the plug-in portion (312) are arranged flush.

5. The lower housing cover assembly according to claim 2, wherein: The sealing member (4) is arranged between the upper end surface of the fixing ring (2) and the fixing portion (311), and / or, The sealing member (4) is arranged between the inner peripheral wall of the fixing ring (2) and the plug-in portion (312).

6. The lower housing cover assembly according to claim 5, wherein: The sealing member (4) is configured as a sealing ring, and an embedding groove (201) is provided on the upper end surface of the fixing ring (2) and / or the inner peripheral wall of the fixing ring (2), and the sealing ring is disposed in the embedding groove (201).

7. The lower housing cover assembly according to claim 6, wherein: The material of the sealing ring is set to rubber.

8. The lower housing cover assembly according to claim 1, wherein: The outer periphery of the fixing ring (2) comprises a first ring portion (21) and a second ring portion (22) arranged in a stepped manner, the first ring portion (21) having a larger diameter than the second ring portion (22), the first ring portion (21) being supported on the inner wall of the lower shell cover (1), and the second ring portion (22) being inserted into the mounting hole (11).

9. The lower housing cover assembly according to claim 1, wherein: The fixing ring (2) and the lower shell cover (1) are welded together.

10. A compressor, characterized in that: It comprises the lower shell cover assembly according to any one of claims 1 to 9, and also comprises a main shell (5), wherein the lower shell cover (1) is fixedly connected to the main shell (5).

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