Split type oil level sensor for compressor

Abstract

The utility model relates to a compressor technical field, specifically disclose a compressor is with split type oil level sensor, wherein, the lower shell cover is encapsulated in the bottom of compressor casing, and the lower shell cover is equipped with mounting hole, first subassembly sets up in the lower shell cover and is located in the compressor casing, and first subassembly includes guide piece and magnetic float, and guide piece fixed mounting is in the inner wall of lower shell cover, and is inserted in mounting hole, and the guide piece is equipped with the reserved slot hole in, and the reserved slot hole is connected with the outside of compressor casing, and second subassembly includes dry reed and lead, and second subassembly is used to from the outside of compressor casing and inserts into the reserved slot hole with first subassembly and constitutes compressor is with split type oil level sensor. Adopt split type structure, first subassembly and lower shell cover complete sealing assembly first, then the outside second subassembly and first subassembly are assembled and form oil level sensor, and it makes second subassembly and lower shell cover separate, effectively avoid the influence of high temperature to sensitive element, improve its durability and reliability.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a split-type oil level sensor for compressors. Background Technology

[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, thereby providing the necessary power support for various processes to meet the needs of different industrial fields.

[0003] To meet the design requirements of real-time oil level monitoring in compressors, a split-type oil level sensor with a magnetic float is typically installed inside the compressor. This sensor mainly consists of a sensing part and a display part. The sensing part is encapsulated and contains sensitive elements such as a glass body and a thin metal sheet. These sensitive elements can accurately detect changes in oil level and transmit signals to an external display device via magnetic coupling. However, because compressors generate a lot of heat during production, especially in the high-temperature environment generated during the welding process of the compressor casing, these sensitive elements have poor resistance and are prone to malfunction, reducing their service life. This can not only reduce the accuracy of oil level monitoring but also affect the overall reliability of the compressor to some extent, increasing maintenance costs and downtime risks.

[0004] Therefore, there is an urgent need for a split-type oil level sensor for compressors to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a split-type oil level sensor for compressors, which can effectively avoid the influence of high temperature on sensitive elements and improve their durability and reliability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a split-type oil level sensor for compressors, comprising:

[0008] The lower housing cover is encapsulated at the bottom end of the compressor housing, and the lower housing cover has mounting holes.

[0009] The first component is disposed in the lower cover and located inside the compressor housing. The first component includes a guide and a magnetic float. The magnetic float is slidably sleeved on the outer peripheral wall of the guide. The guide is fixedly installed on the inner wall of the lower cover and inserted into the mounting hole. The guide is provided with a reserved slot, which communicates with the outside of the compressor housing.

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

[0011] As a preferred technical solution for the split-type oil level sensor for the compressor mentioned above, the first component further includes a first limiting structure. The first limiting structure is disposed 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 displacement of the magnetic float along the axial direction of the guide member.

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

[0013] As a preferred technical solution for the split-type oil level sensor for the compressor, the first component further includes an elastic element, which is sleeved on the outer peripheral wall of the guide member, with one end of the elastic element abutting against the magnetic float and the other end of the elastic element abutting against the first limiting structure.

[0014] As a preferred technical solution for the split-type oil level sensor for the compressor mentioned above, the bottom end of the magnetic float is provided with a receiving groove, and one end of the elastic element is placed in the receiving groove.

[0015] As a preferred technical solution for the split-type oil level sensor for the aforementioned compressor, the elastic element is a compression spring.

[0016] As a preferred technical solution for the split-type oil level sensor for the compressor mentioned above, the first component further includes a second limiting structure, which is fixedly installed on the upper end of the guide member. The second limiting structure is used to limit the displacement of the magnetic float along the axial direction of the guide member.

[0017] As a preferred technical solution for the split-type oil level sensor for the compressor mentioned above, the second component further 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 engage with the reserved slot.

[0018] As a preferred technical solution for the split-type oil level sensor for the compressor mentioned above, the second component further includes an encapsulation layer, which wraps around the outer surface of the reed switch, and the reed switch is fixed in the reserved slot through the encapsulation layer.

[0019] As a preferred technical solution for the split-type oil level sensor for the compressor mentioned above, the second component further includes a heat shrink tubing sleeve, which is sleeved on the lead wire.

[0020] The beneficial effects of this utility model are as follows:

[0021] This utility model provides a split-type oil level sensor for compressors. The split-type oil level sensor for compressors includes: a lower cover, a first component, and a second component. The lower cover is encapsulated at the bottom of the compressor housing and has a mounting hole. The first component is disposed on the lower cover and located inside the compressor housing. The first component includes a guide and a magnetic float. The magnetic float is slidably sleeved on the outer peripheral wall of the guide. The guide is fixedly installed on the inner wall of the lower cover and inserted into the mounting hole. The guide has a reserved slot that communicates with the outside of the compressor housing. The second component includes a reed switch and a lead wire. The lead wire is connected to the bottom end of the reed switch. The second component is used to be inserted from the outside of the compressor housing into the reserved slot to form a split-type oil level sensor for compressors with the first component. This design employs a split-type structure. First, the first component is sealed and assembled with the lower housing cover. Then, the external second component is assembled with the first component to form an oil level sensor. This separates the second component from the lower housing cover, effectively avoiding the impact of high temperatures on the sensitive element, improving its durability and reliability, ensuring the accuracy of oil level monitoring, extending its service life, and further improving the overall performance and safety of the compressor. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of the lower shell cover provided by this utility model;

[0023] Figure 2 A schematic diagram of the structure of the first component and the lower shell cover provided by this utility model;

[0024] Figure 3 A schematic diagram of the structure of the first component provided by this utility model;

[0025] Figure 4 A schematic diagram of the structure of the second component provided by this utility model.

[0026] in:

[0027] 1. Lower cover; 101. Mounting hole;

[0028] 2. Guide component; 21. First limiting structure; 22. Second limiting structure;

[0029] 3. Magnetic float; 301. Receiving tank;

[0030] 4. Reserved slot; 5. Reed switch; 6. Lead wire; 7. Elastic element; 8. Third limiting structure; 9. Heat shrink tubing. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. 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.

[0033] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection or a connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 4 As shown, this embodiment provides a split-type oil level sensor for compressors. The split-type oil level sensor for compressors includes: a lower cover 1, a first component, and a second component. The lower cover 1 is encapsulated at the bottom end of the compressor housing and has a mounting hole 101. The first component is disposed on the lower cover 1 and located inside the compressor housing. The first component includes a guide 2 and a magnetic float 3. The magnetic float 3 is slidably sleeved on the outer peripheral wall of the guide 2. The guide 2 is fixedly installed on the inner wall of the lower cover 1 and inserted into the mounting hole 101. The guide 2 has a reserved slot 4 that communicates with the outside of the compressor housing. The second component includes a reed switch 5 and a lead wire 6. The lead wire 6 is connected to the bottom end of the reed switch 5. The second component is used to be inserted from the outside of the compressor housing into the reserved slot 4 to form a split-type oil level sensor for compressors with the first component. This design employs a split structure. First, the first component is sealed and assembled with the lower housing cover 1. Then, the external second component is assembled with the first component to form an oil level sensor. This separates the second component from the lower housing cover 1, effectively avoiding the impact of high temperature on the sensitive element, improving its durability and reliability, ensuring the accuracy of oil level monitoring, extending its service life, and further improving the overall performance and safety of the compressor.

[0037] 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 position of the magnetic float 3 inside the compressor, and can react in a timely manner. The lead wire 6 can transmit the action signal of the bimetallic strip (protected by a glass cover).

[0038] In this embodiment, to ensure the lower limit stroke of the magnetic float 3, the first component 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 shell cover 1. The first limiting structure 21 is used to limit the displacement of the magnetic float 3 along the axial direction of the guide member 2. Furthermore, the first limiting structure 21 can be assembled and fixed with the lower shell cover 1 by means of laser welding, silver brazing, circumferential welding, etc.

[0039] Optionally, to further improve the sealing performance, the first limiting structure 21 includes a limiting part and a sealing part connected in sequence. The limiting part protrudes from the bottom end of the guide member 2 and is fixedly connected to the inner wall of the lower cover 1. The limiting part is used to limit the displacement of the magnetic float 3 along the axial direction of the guide member 2. The sealing part is inserted into the mounting hole 101 and fits against the hole wall of the mounting hole 101. Furthermore, auxiliary sealing methods such as rubber sealing rings can be added to improve the sealing effect.

[0040] Optionally, the first component further includes an elastic element 7, which is sleeved on the outer peripheral wall of the guide 2, with one end of the elastic element 7 abutting against the magnetic float 3 and the other end abutting against the first limiting structure 21. Further, the elastic element 7 is a compression spring. With this configuration, the elastic deformation of the elastic element 7 can absorb the kinetic energy of high-frequency fluctuations in the oil surface, slowing down the instantaneous response speed of the magnetic float 3, suppressing fluctuation interference, and avoiding misjudgment of the liquid level. Simultaneously, the elastic force of the elastic element 7 can partially offset the buoyancy difference caused by changes in oil density, achieving dynamic density compensation. When the oil density decreases, the buoyancy of the magnetic float 3 decreases, and the restoring force of the elastic element 7 assists in maintaining the position of the magnetic float 3, reducing measurement deviation; conversely, when the density increases, the elastic element 7 compresses, preventing the magnetic float 3 from excessively rising.

[0041] Optionally, in order to prevent the elastic element 7 from deflecting and to ensure the stability of the direction of the elastic force, the bottom end of the magnetic float 3 is provided with a receiving groove 301, and one end of the elastic element 7 is placed in the receiving groove 301.

[0042] Optionally, to ensure the upper limit stroke of the magnetic float 3, the first component also includes a second limiting structure 22. The second limiting structure 22 is fixedly installed on the upper end of the guide member 2, and the second limiting structure 22 is used to limit the displacement of the magnetic float 3 along the axial direction of the guide member 2. Further, the second limiting structure 22 can be assembled and fixed with the guide member 2 by welding, snap ring fitting, interference fit, thread fixing, etc.

[0043] Optionally, the second component also includes a third limiting structure 8, through which the lead wire 6 passes and connects to the reed switch 5. The third limiting structure 8 is fixedly connected to the bottom end of the reed switch 5 and can engage with the pre-drilled slot 4. Further, the third limiting structure 8 is a rubber stopper.

[0044] Optionally, in order to improve the protection of the reed switch 5 and enhance its corrosion resistance, the second component also includes an encapsulation layer. The encapsulation layer is wrapped around the outer surface of the reed switch 5, and the reed switch 5 is fixed in the reserved slot 4 through the encapsulation layer. The encapsulation layer is made of resin material.

[0045] In this embodiment, the second component can be fixed in the reserved slot 4 by glue, resin potting or the like.

[0046] Optionally, in order to effectively improve the temperature adaptability of lead 6 to alternating hot and cold temperatures, the second component also includes a heat shrink tubing 9, which is fitted onto lead 6.

[0047] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

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