Split type oil level sensor for compressor and assembling method of split type oil level sensor

Abstract

The invention relates to the technical field of compressors, and particularly discloses a split type oil level sensor for a compressor and an assembling method thereof.A lower shell cover is packaged at the bottom end of a compressor shell, a mounting hole is formed in the lower shell cover, a first assembly is arranged on the lower shell cover and located in the compressor shell, and the first assembly comprises a guide part and a magnetic floater; the guide part is fixedly installed on the inner wall of the lower shell cover and inserted into the installation hole, a reserved groove hole is formed in the guide part and communicated with the outside of the compressor shell, the second assembly comprises a reed switch and a lead, and the second assembly is used for being inserted into the reserved groove hole from the outside of the compressor shell to form the split type oil level sensor for the compressor with the first assembly. The split type structure is adopted, after the first assembly and the lower shell cover are assembled in a sealed mode, the external second assembly and the first assembly are assembled to form the oil level sensor, the second assembly is separated from the lower shell cover, the influence of high temperature on the sensitive element is effectively avoided, and the durability and reliability of the sensitive element are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a split oil level sensor for a compressor and an assembling method thereof. Background Art

[0002] A compressor is a mechanical device used to increase gas pressure and transport gas. Its core function is to compress low-pressure gas into high-pressure gas through mechanical work, providing the necessary power support for various process flows to meet the needs of different industrial fields.

[0003] To meet the compressor's design requirements for real-time oil level monitoring, a split-type oil level sensor with a magnetic float is typically installed inside the compressor. This sensor primarily consists of a sensing portion and a display portion. The sensing portion utilizes an encapsulated design and contains sensitive components such as glass and thin metal sheets. These components are able to accurately detect oil level changes and transmit signals to an external display device via magnetic coupling. However, due to the large amount of heat generated during the compressor's production process, particularly in the high temperatures generated by the compressor casing during welding, these sensitive components have poor tolerance, which can easily lead to functional failure and shorten their service life. This can not only reduce the accuracy of oil level monitoring but also, to a certain extent, affect the overall reliability of the compressor, increasing maintenance costs and the risk of downtime.

[0004] Therefore, there is an urgent need for a split oil level sensor for a compressor and an assembly method thereof to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a split oil level sensor for a compressor and an assembly method thereof, which can effectively avoid the influence of high temperature on sensitive components and improve their durability and reliability.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a split oil level sensor for a compressor, comprising:

[0008] A lower shell cover is sealed at the bottom end of the compressor housing and is provided with a mounting hole;

[0009] a first component, the first component being disposed on the lower shell cover and located within the compressor housing, the first component comprising a guide member and a magnetic float, the magnetic float being slidably sleeved on the outer peripheral wall of the guide member, the guide member being fixedly mounted on the inner wall of the lower shell cover and inserted into the mounting hole, the guide member being provided with a reserved slot hole, the reserved slot hole being in communication with the exterior of the lower shell cover;

[0010] The second component includes a reed switch and a lead, the lead is connected to the bottom end of the reed switch, and the second component is used to be inserted into the reserved slot from the outside of the compressor housing to form a split oil level sensor for the compressor together with the first component.

[0011] As a preferred technical solution for the above-mentioned split oil level sensor for the compressor, the first component also includes a first limiting structure, which is arranged at the bottom end of the guide member and fixedly connected to the inner wall of the lower shell cover. The first limiting structure is used to limit the axial displacement of the magnetic float along the guide member.

[0012] As an optimal technical solution for the above-mentioned split oil level sensor for the compressor, the first limiting structure includes a limiting portion and a sealing portion connected in sequence, the limiting portion is protruded from the bottom end of the guide member and is fixedly connected to the inner wall of the lower shell cover, and the limiting portion is used to limit the axial displacement of the magnetic float along the guide member, and the sealing portion is inserted into the mounting hole and fits against the hole wall of the mounting hole.

[0013] As an optimal technical solution for the above-mentioned split oil level sensor for the compressor, the first component also includes an elastic member, which is sleeved on the outer peripheral wall of the guide member, and one end of the elastic member abuts against the magnetic float, and the other end of the elastic member abuts against the first limiting structure.

[0014] As an optimal technical solution for the above-mentioned split oil level sensor for the compressor, the first component also includes a second limiting structure, which is fixedly installed on the upper end of the guide member, and the second limiting structure is used to limit the axial displacement of the magnetic float along the guide member.

[0015] As an optimal technical solution for the above-mentioned split oil level sensor for the compressor, the second component also includes a third limiting structure, the lead wire passes through the third limiting structure and is connected to the reed switch, the third limiting structure is fixedly connected to the bottom end of the reed switch, and the third limiting structure can be snap-fitted with the reserved slot.

[0016] As a preferred technical solution for the above-mentioned split oil level sensor for the compressor, the second component also includes a packaging layer, which is wrapped around the outer surface of the reed switch, and the reed switch is fixed in the reserved slot through the packaging layer.

[0017] As a preferred technical solution of the above-mentioned split oil level sensor for the compressor, the second component further includes a heat shrink tube sleeve, and the heat shrink tube sleeve is sleeved on the lead wire.

[0018] On the other hand, the present invention also provides an assembly method of a split oil level sensor for a compressor, which is applicable to the split oil level sensor for a compressor in any of the above solutions, and comprises the following steps:

[0019] S01. Fixing the first component to the lower shell cover through the mounting hole, and completing the assembly of the compressor housing;

[0020] S02. Insert the second component into the reserved slot from the outside of the compressor housing, and complete the assembly of the split oil level sensor for the compressor together with the first component.

[0021] As a preferred technical solution of the assembly method of the above-mentioned split oil level sensor for the compressor, it also includes a second limiting structure and an elastic member;

[0022] In S01, the step of fixing the first component to the lower housing cover through the mounting hole includes:

[0023] T1. Fix the guide member to the lower housing cover 1 through the mounting hole;

[0024] T2, inserting the elastic member into the guide member;

[0025] T3, inserting the magnetic float into the guide member;

[0026] T4. Fix the second limiting structure to the upper end of the guide member to complete the assembly of the first component.

[0027] As a preferred technical solution of the assembly method of the above-mentioned split oil level sensor for the compressor, it also includes a second limiting structure and an elastic member;

[0028] In S01, the step of fixing the first component to the lower housing cover through the mounting hole includes:

[0029] T1. Insert the elastic member into the guide member;

[0030] T2, inserting the magnetic float into the guide member;

[0031] T3. Fix the second limiting structure to the upper end of the guide member to complete the assembly of the first component;

[0032] T4. Fix the first component to the lower shell cover through the mounting hole.

[0033] As a preferred technical solution of the assembly method of the above-mentioned split oil level sensor for the compressor, it also includes a packaging layer;

[0034] In S02, the step of inserting the second component into the reserved slot hole from outside the compressor shell includes:

[0035] G1, inserting the dry reed tube into the reserved slot hole from outside the compressor shell;

[0036] G2, wrapping the encapsulation layer on the outer surface of the dry reed tube to fix the dry reed tube in the reserved slot hole.

[0037] As a preferred technical solution of the above-mentioned assembly method of the split oil level sensor for the compressor, a third limiting structure is further included;

[0038] In S02, the step of completing the assembly of the split oil level sensor for the compressor with the first component includes:

[0039] G1, inserting the lead wire through the third limiting structure;

[0040] G2, inserting the third limiting structure into the reserved slot hole to fix the second component in the reserved slot hole to complete the assembly of the split oil level sensor for the compressor.

[0041] The present application has the following advantages:

[0042] The present application provides a split oil level sensor for a compressor and an assembly method thereof, which comprises a lower shell cover, a first component and a second component. The lower shell cover is encapsulated at the bottom end of a compressor shell and is provided with a mounting hole. The first component is arranged in the lower shell cover and located in the compressor shell. The first component comprises a guide and a magnetic float. The magnetic float is slidably arranged on the outer peripheral wall of the guide. The guide is fixedly installed on the inner wall of the lower shell cover and is inserted into the mounting hole. The guide is provided with a reserved slot hole. The reserved slot hole is connected to the outside of the compressor shell. The second component comprises a dry reed tube and a lead wire. The lead wire is connected to the bottom end of the dry reed tube. The second component is used to insert into the reserved slot hole from outside the compressor shell to form the split oil level sensor with the first component. In this way, the split structure is adopted. The first component is sealed and assembled with the lower shell cover, and then the second component outside is assembled with the first component to form the oil level sensor. The second component is separated from the lower shell cover, which effectively avoids the influence of high temperature on sensitive components, improves the durability and reliability, ensures the accuracy of oil level monitoring, prolongs the service life, and further improves the overall performance and safety of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0043] Fig. 1 The structure diagram of the lower shell cover is provided.

[0044] Fig. 2A schematic structural diagram of the first component and the lower housing cover provided by the present invention;

[0045] Fig. 3 A schematic structural diagram of the first component provided by the present invention;

[0046] Fig. 4 This is a schematic structural diagram of the second component provided by the present invention.

[0047] in:

[0048] 1. Lower housing cover; 101. Mounting hole;

[0049] 2. Guide member; 21. First limiting structure; 22. Second limiting structure;

[0050] 3. Magnetic float; 301. Accommodation tank;

[0051] 4. Reserved slot; 5. Reed switch; 6. Lead wire; 7. Elastic part; 8. Third limiting structure; 9. Heat shrink tubing. DETAILED DESCRIPTION

[0052] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but are not to be construed as limiting the present invention.

[0053] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, 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 for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0054] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection or connection; mechanical connection or electrical connection; direct connection or indirect connection 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 based on specific circumstances.

[0055] Unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. 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.

[0056] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0057] like Figs. 1 to 4 As shown, this embodiment provides a split oil level sensor for a compressor, which includes: a lower shell cover 1, a first component and a second component. The lower shell cover 1 is encapsulated at the bottom end of the compressor housing, and the lower shell cover 1 is provided with a mounting hole 101. The first component is arranged on the lower shell cover 1 and is located in the compressor housing. The first component includes a guide member 2 and a magnetic float 3. The magnetic float 3 is slidably sleeved on the outer peripheral wall of the guide member 2. The guide member 2 is fixedly mounted on the inner wall of the lower shell cover 1 and inserted into the mounting hole 101. A reserved slot 4 is provided in the guide member 2. The reserved slot 4 is connected to the outside of the compressor housing. The second component includes a reed switch 5 and a lead 6. The lead 6 is connected to the bottom end of the reed switch 5. The second component is used to be inserted into the reserved slot 4 from the outside of the compressor housing to form a split oil level sensor for the compressor with the first component. Such a setting adopts a split structural design. First, the first component and the lower shell cover 1 are sealed and assembled, and then the external second component is assembled with the first component to form an oil level sensor, which separates the second component from the lower shell cover 1, effectively avoiding the influence of high temperature on sensitive components, improving their durability and reliability, ensuring the accuracy of oil level monitoring, extending service life, and further improving the overall performance and safety of the compressor.

[0058] It should be noted that the reed switch 5 includes a bimetallic strip (protected by a glass cover), which mainly serves as a sensor for the action position of the magnetic float 3 inside the compressor and can respond in time. The lead 6 can transmit the action signal of the bimetallic strip (protected by a glass cover).

[0059] In this embodiment, to ensure the lower limit travel of the magnetic float 3, the first assembly further includes a first limiting structure 21. The first limiting structure 21 is disposed at the bottom end of the guide member 2 and fixedly connected to the inner wall of the lower housing 1. The first limiting structure 21 is used to limit the axial displacement of the magnetic float 3 along the guide member 2. Furthermore, the first limiting structure 21 can be assembled and fixed to the lower housing 1 by laser welding, silver brazing, circumferential welding, or other methods.

[0060] Optionally, to further enhance sealing performance, the first limiting structure 21 includes a limiting portion and a sealing portion connected in sequence. The limiting portion protrudes from the bottom end of the guide member 2 and is fixedly connected to the inner wall of the lower housing 1. The limiting portion is used to limit the axial displacement of the magnetic float 3 along the guide member 2. The sealing portion is inserted into the mounting hole 101 and abuts against the wall of the mounting hole 101. Furthermore, an auxiliary sealing method such as a rubber sealing ring can be added to enhance the sealing effect.

[0061] Optionally, the first component further includes an elastic member 7, which is sleeved on the outer peripheral wall of the guide member 2, and one end of the elastic member 7 abuts against the magnetic float 3, and the other end of the elastic member 7 abuts against the first limiting structure 21. Furthermore, the elastic member 7 is a compression spring. With such a configuration, the elastic deformation of the elastic member 7 can absorb the kinetic energy of high-frequency fluctuations in the oil level, slow down the instantaneous response speed of the magnetic float 3, suppress fluctuation interference, and avoid misjudgment of the liquid level. At the same time, the elastic force of the elastic member 7 can partially offset the buoyancy difference caused by changes in oil density, thereby achieving dynamic density compensation. When the oil density decreases, the buoyancy of the magnetic float 3 decreases, and the restoring force of the elastic member 7 helps maintain the position of the magnetic float 3, reducing measurement deviations. Conversely, when the density increases, the elastic member 7 is compressed to prevent the magnetic float 3 from floating excessively.

[0062] Optionally, in order to prevent the elastic member 7 from deflecting and ensure the stability of the direction of the elastic force, a receiving groove 301 is provided at the bottom end of the magnetic float 3 , and one end of the elastic member 7 is placed in the receiving groove 301 .

[0063] Optionally, to ensure the upper limit travel of the magnetic float 3, the first assembly further includes a second limit structure 22, which is fixedly mounted on the upper end of the guide member 2 and is used to limit the axial displacement of the magnetic float 3 along the guide member 2. Furthermore, the second limit structure 22 can be assembled and fixed to the guide member 2 by welding, retaining springs, interference fit, threaded fixing, or the like.

[0064] Optionally, the second component further includes a third limiting structure 8, through which the lead 6 passes and is connected to the reed switch 5. The third limiting structure 8 is fixedly connected to the bottom end of the reed switch 5, and the third limiting structure 8 can be snap-fitted with the reserved slot 4. Furthermore, the third limiting structure 8 is a rubber stopper.

[0065] Optionally, in order to improve the protection effect of the reed switch 5 and improve its corrosion resistance, the second component also includes a packaging layer, which is wrapped around the outer surface of the reed switch 5. The reed switch 5 is fixed in the reserved slot 4 through the packaging layer, and the packaging layer is made of resin material.

[0066] In this embodiment, the second component can be fixed in the reserved slot 4 by glue, resin potting, etc.

[0067] Optionally, in order to effectively improve the temperature adaptability of the lead wire 6 to alternating hot and cold temperatures, the second component further includes a heat shrink tube sleeve 9 , which is sleeved on the lead wire 6 .

[0068] This embodiment further provides an assembly method for a split oil level sensor for a compressor, which is applicable to the split oil level sensor for a compressor in the above-mentioned solution, and specifically includes the following steps:

[0069] S01. Fix the first component to the lower shell cover 1 through the mounting hole 101, and complete the assembly of the compressor housing;

[0070] S02. Insert the second component into the reserved slot 4 from the outside of the compressor housing, and complete the assembly of the split oil level sensor for the compressor with the first component.

[0071] Optionally, in S01, the step of fixing the first component to the lower housing cover 1 through the mounting hole 101 includes:

[0072] T1. Fix the guide member 2 to the lower housing cover 1 through the mounting hole 101;

[0073] T2, insert the elastic member 7 into the guide member 2;

[0074] T3, insert the magnetic float 3 into the guide member 2;

[0075] T4. Fix the second limiting structure 22 to the upper end of the guide member 2 to complete the assembly of the first component.

[0076] Optionally, in S01, the step of fixing the first component to the lower housing cover 1 through the mounting hole 101 includes:

[0077] T1. Insert the elastic member 7 into the guide member 2;

[0078] T2, insert the magnetic float 3 into the guide member 2;

[0079] T3. Fix the second limiting structure 22 to the upper end of the guide member 2 to complete the assembly of the first component;

[0080] T4. Fix the first component to the lower housing cover 1 through the mounting hole 101.

[0081] Optionally, in S02, the step of inserting the second component into the reserved slot 4 from the outside of the compressor housing includes:

[0082] G1. Insert the reed switch 5 into the reserved slot 4 from the outside of the compressor housing;

[0083] G2. Wrap the packaging layer around the outer surface of the reed switch 5 to secure the reed switch 5 in the reserved slot 4.

[0084] Optionally, in S02, the step of completing the assembly of the split oil level sensor for the compressor with the first component includes:

[0085] G1. Pass the lead wire 6 through the third limiting structure 8;

[0086] G2. Insert the third limiting structure 8 into the reserved slot 4 to fix the second component in the reserved slot 4, thereby completing the assembly of the split oil level sensor for the compressor.

[0087] 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. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. 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 split oil level sensor for a compressor, characterized in that: include: A lower shell cover (1), wherein the lower shell cover (1) is encapsulated at the bottom end of the compressor housing, and the lower shell cover (1) is provided with a mounting hole (101); A first component, the first component is arranged on the lower shell cover (1) and is located in the compressor housing, the first component includes a guide member (2) and a magnetic float (3), the magnetic float (3) is slidably sleeved on the outer peripheral wall of the guide member (2), the guide member (2) is fixedly installed on the inner wall of the lower shell cover (1) and inserted into the mounting hole (101), and a reserved slot hole (4) is provided in the guide member (2), and the reserved slot hole (4) is connected to the outside of the lower shell cover (1); The second component comprises a reed switch (5) and a lead (6), wherein the lead (6) is connected to the bottom end of the reed switch (5), and the second component is used to be inserted into the reserved slot (4) from the outside of the compressor housing to form a split oil level sensor for the compressor together with the first component.

2. The split oil level sensor for a compressor according to claim 1, characterized in that: The first component further comprises a first limiting structure (21), which is arranged at the bottom end of the guide member (2) and fixedly connected to the inner wall of the lower shell cover (1), and is used to limit the axial displacement of the magnetic float (3) along the guide member (2).

3. The split oil level sensor for a compressor according to claim 2, characterized in that: The first limiting structure (21) includes a limiting portion and a sealing portion connected in sequence, wherein the limiting portion is protruded from the bottom end of the guide member (2) and is fixedly connected to the inner wall of the lower shell cover (1), and the limiting portion is used to limit the axial displacement of the magnetic float (3) along the guide member (2), and the sealing portion is inserted into the mounting hole (101) and fits with the hole wall of the mounting hole (101).

4. The split oil level sensor for a compressor according to claim 2, characterized in that: The first component further comprises an elastic member (7), the elastic member (7) being sleeved on the outer peripheral wall of the guide member (2), one end of the elastic member (7) being in contact with the magnetic float (3), and the other end of the elastic member (7) being in contact with the first limiting structure (21).

5. The split type oil level sensor for a compressor according to claim 2, characterized in that: The first component further includes a second limiting structure (22), which is fixedly mounted on the upper end of the guide member (2), and the second limiting structure (22) is used to limit the axial displacement of the magnetic float (3) along the guide member (2).

6. The split oil level sensor for a compressor according to any one of claims 1 to 5, characterized in that: The second component also includes a third limiting structure (8), the lead wire (6) passes through the third limiting structure (8) and is connected to the reed switch (5), the third limiting structure (8) is fixedly connected to the bottom end of the reed switch (5), and the third limiting structure (8) can be snap-fitted with the reserved slot (4).

7. The split oil level sensor for a compressor according to any one of claims 1 to 5, characterized in that: The second component further comprises a packaging layer, the packaging layer being wrapped around the outer surface of the reed switch (5), and the reed switch (5) being fixed in the reserved slot (4) through the packaging layer.

8. The split oil level sensor for a compressor according to any one of claims 1 to 5, characterized in that: The second component further comprises a heat shrink tubing sleeve (9), and the heat shrink tubing sleeve (9) is sleeved on the lead wire (6).

9. A method for assembling a split oil level sensor for a compressor, characterized in that: The split oil level sensor for a compressor according to any one of claims 1 to 8 comprises the following steps: S01, fixing the first component to the lower shell cover (1) through the mounting hole (101), and completing the assembly of the compressor housing; S02. Insert the second component into the reserved slot (4) from the outside of the compressor housing, and complete the assembly of the split oil level sensor for the compressor with the first component.

10. The assembly method of a split oil level sensor for a compressor according to claim 9, characterized in that: It also includes a second limiting structure (22) and an elastic member (7); In S01, the step of fixing the first component to the lower housing cover (1) through the mounting hole (101) includes: T1. Fixing the guide member (2) to the lower housing cover (1) through the mounting hole (101); T2, inserting the elastic member (7) into the guide member (2); T3, inserting the magnetic float (3) into the guide member (2); T4. Fix the second limiting structure (22) to the upper end of the guide member (2) to complete the assembly of the first component.

11. The method for assembling a split oil level sensor for a compressor according to claim 9, wherein: It also includes a second limiting structure (22) and an elastic member (7); In S01, the step of fixing the first component to the lower housing cover (1) through the mounting hole (101) includes: T1. Insert the elastic member (7) into the guide member (2); T2, inserting the magnetic float (3) into the guide member (2); T3. Fixing the second limiting structure (22) to the upper end of the guide member (2) to complete the assembly of the first component; T4. Fix the first component to the lower shell cover (1) through the mounting hole (101).

12. The method for assembling a split oil level sensor for a compressor according to claim 9, characterized in that: Also includes an encapsulation layer; In S02, the step of inserting the second component into the reserved slot (4) from the outside of the compressor housing includes: G1. Inserting the reed switch (5) into the reserved slot (4) from the outside of the compressor housing; G2. Wrap the packaging layer around the outer surface of the reed switch (5) so that the reed switch (5) is fixed in the reserved slot (4).

13. The method for assembling a split oil level sensor for a compressor according to claim 9, wherein: Also includes a third limiting structure (8); In S02, the step of completing the assembly of the split oil level sensor for the compressor with the first component includes: G1. Passing the lead wire (6) through the third limiting structure (8); G2. Insert the third limiting structure (8) into the reserved slot (4) so ​​that the second component is fixed in the reserved slot (4), thereby completing the assembly of the split oil level sensor for the compressor.

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