An oil level sensor assembly and compressor

Abstract

The utility model belongs to compressor manufacturing technical field discloses an oil level sensor assembly and compressor. Among them, the oil level sensor assembly includes the guide piece, the guide piece outside is equipped with the float and spring, the spring is located the below of float, the upper end of spring is connected with the fixed connection of float, the lower end of spring is connected with the fixed connection of guide piece, the fluctuation of oil surface under the prior art and bubble can influence the stability of float, and then leads to the phenomenon of false alarm.

Description

Technical Field

[0001] This utility model relates to the field of compressor manufacturing technology, and in particular to an oil level sensor assembly and a compressor. Background Technology

[0002] During normal operation, the oil inside the compressor is gradually consumed. Insufficient oil can cause the compressor to seize up, requiring the entire unit to be scrapped. Currently, most components in air conditioning systems are welded, and since the compressor is located in the outdoor unit, replacing it is a complex process and presents a high level of repair difficulty.

[0003] Currently, the market requires monitoring the oil level inside the compressor, automatically triggering an alarm when the oil level reaches a critical position, and ensuring timely oil replenishment to fundamentally solve the problem of compressor oil shortage.

[0004] When the compressor is running, the motor drives the pump body to rotate. One end of the crankshaft in the pump body pumps oil into the oil surface to achieve lubrication of the entire pump body. Due to the rotation of the crankshaft, the oil surface will fluctuate. At the same time, the refrigerant gas in the compressor will also cause bubbles to form on the oil surface. The fluctuation of the oil surface and the bubbles will affect the stability of the magnetic float, causing the float to sink and act on the metal plate of the reed switch, switching the working state of the metal plate inside the reed switch, resulting in delayed alarm or false alarm. Utility Model Content

[0005] The purpose of this invention is to provide an oil level sensor assembly and compressor, which solves the problem that fluctuations and bubbles in the oil surface can affect the stability of the float, leading to delayed alarms or false alarms.

[0006] To achieve this objective, the present invention adopts the following technical solution: The present invention provides an oil level sensor assembly, including a guide member, wherein a float and a spring are sleeved on the guide member, the spring is located below the float, the upper end of the spring is fixedly connected to the float, and the lower end of the spring is fixedly connected to the guide member.

[0007] Preferably, the float and the spring are fixedly connected by a connecting structure.

[0008] Preferably, the connection structure includes a first annular groove disposed on the lower end face of the float, the upper end of the spring is inserted into the first annular groove, and the spring is engaged with the side wall of the first annular groove.

[0009] Preferably, the upper end of the spring is welded to the bottom surface of the first annular groove.

[0010] Preferably, the bottom of the guide member is provided with a tray, and the lower end of the spring is fixed on the tray.

[0011] Preferably, a second annular groove is formed on the tray, the lower end of the spring is inserted into the second annular groove, and the spring is engaged with the side wall of the second annular groove.

[0012] Preferably, the lower end of the spring is welded to the bottom surface of the second annular groove.

[0013] Preferably, the connection structure includes a sleeve ring disposed on the lower end face of the float, the sleeve ring being used to engage the upper end of the spring.

[0014] Preferably, the bottom of the guide member is circumferentially formed with a tray, and the tray is provided with a second fixing clip, which engages with the lower end of the spring.

[0015] A compressor comprising an oil level sensor assembly as described in any of the preceding claims, the oil level sensor assembly being mounted on a lower housing cover.

[0016] Beneficial effects: A spring and a float are fitted onto the guide component, with the spring positioned below the float. The upper end of the spring is fixedly connected to the float, and the lower end is fixedly connected to the guide component. This arrangement allows the oil level sensor assembly to function as a damper during operation. This reduces interference from bubbles or fluctuations in the oil surface caused by refrigerant gas, thus reducing the float's swaying amplitude. Consequently, it lowers the probability of delayed or false alarms caused by the float accidentally entering the alarm zone of the reed switch. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the oil level sensor assembly according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the spring float connection according to an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the oil level sensor assembly according to another embodiment of this utility model;

[0020] Figure 4 This is a cross-sectional view of the oil level sensor assembly according to another embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the spring float connection in another embodiment of this utility model.

[0022] In the diagram: 1. Guide component; 2. Spring; 3. Float; 4. First annular groove; 5. Tray; 6. Lower shell cover; 7. Connecting ring. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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 based on the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the 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 the 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" the 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.

[0026] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0027] In the current technology, the float moves up and down with the oil inside the compressor. The fluctuation of the oil and the bubbles generated by the refrigerant gas on the oil surface will affect the position of the float, causing the float to fluctuate up and down along the guide. This will eventually cause the float to enter the working area of ​​the reed switch, resulting in false triggering of the reed switch, which in turn will lead to untimely alarm or false alarm.

[0028] To solve the above problems, such as Figure 1As shown, this utility model provides an oil level sensor assembly, including a guide member 1. A spring 2 and a float 3 are sleeved on the outside of the guide member 1. The spring 2 is located below the float 3. The upper end of the spring 2 is fixedly connected to the float 3, and the lower end of the spring 2 is fixedly connected to the guide member 1. The guide member 1 is set on the lower cover 6 of the compressor.

[0029] A spring 2 is installed below the float 3. When the oil in the compressor fluctuates, or when air bubbles in the oil reach the bottom end face of the float 3, or when air bubbles in the oil press against the top end face of the float 3, the float 3 will swing significantly. The spring 2 connected to the float 3 can act as a damper, so that the energy of the float 3 swinging is absorbed by the extension and contraction vibration of the spring 2, thereby reducing the swing amplitude of the float 3 and reducing the probability that the float 3 will accidentally enter the working area of ​​the reed switch. In this way, the probability of the reed switch delaying the issuance of alarm signals or issuing false alarms can be reduced.

[0030] Example 1

[0031] like Figure 1 , Figure 2 As shown, an oil level sensor assembly provided in this embodiment includes a guide 1, which is fixed on the lower cover 6 of the compressor. The bottom of the guide 1 is provided with a tray 5. A spring 2 and a float 3 are sleeved on the outside of the guide 1. The spring 2 is located below the float 3. The upper end of the spring 2 is fixedly connected to the float 3, and the lower end of the spring 2 is fixedly connected to the guide 1.

[0032] In this embodiment, the upper end of spring 2 is directly abutted and fixed to the lower end face of float 3, and the lower end of spring 2 is directly abutted and fixed to the tray 5 at the bottom of guide 1. Thus, when the oil in the compressor fluctuates, spring 2 connected to float 3 can act as a damper, allowing the energy of float 3's swing to be absorbed by the extension and contraction vibration of spring 2, thereby reducing the swing amplitude of float 3 caused by oil surface fluctuations. When air bubbles in the oil reach the bottom end face of float 3, float 3 will be subjected to an upward force, causing it to move upward along guide 1. At this time, spring 2 will generate a damping force on float 3, preventing float 3 from failing to alarm for low oil level due to the additional upward force generated by air bubbles. When air bubbles in the oil press against the upper end face of float 3, float 3 will be subjected to a downward force, causing it to move downward along guide 1. At this time, spring 2 will generate a damping force on float 3, preventing float 3 from generating a false alarm due to the additional downward force generated by air bubbles. By placing a spring 2 below the float 3, the probability of the float 3 accidentally entering the working area of ​​the reed switch can be reduced, thereby reducing the probability of the reed switch delaying the issuance of an alarm signal or issuing a false alarm.

[0033] Example 2

[0034] like Figure 3 In this embodiment, a first annular groove 4 is formed on the lower end face of the float 3. The upper end of the spring 2 is inserted into the first annular groove 4 and engaged with the side wall of the first annular groove 4. By setting the first annular groove 4, the spring 2 below the float 3 can be made more stable during the up and down movement, so that the float 3 can keep moving along the axis of the reed switch and avoid radial displacement of the float 3.

[0035] Meanwhile, a tray 5 is formed at the bottom of the guide member 1, and a second annular groove can also be formed on the tray 5. The lower end of the spring 2 is inserted into the second annular groove and engaged with the side wall of the second annular groove. The second annular groove can limit the radial displacement of the lower end of the spring 2. The first annular groove 4 and the second annular groove can simultaneously limit the radial displacement of both ends of the spring 2, so that the spring 2 can retract stably along its own axis, thereby improving radial stability.

[0036] Furthermore, the upper end of spring 2 can be welded to the bottom surface of the first annular groove 4, and the lower end of spring 2 can be welded to the bottom surface of the second annular groove. In order to ensure that spring 2 can be firmly installed on the lower side of float 3 and the upper side of tray 5, the reliability of the connection between the two ends of spring 2 can be improved by welding them together.

[0037] Example 3

[0038] like Figure 4 , Figure 5 As shown, a sleeve ring 7 is provided on the lower end face of the float 3. The sleeve ring 7 is snapped onto the upper end of the spring 2, realizing a detachable connection between the float 3 and the spring 2, which facilitates subsequent disassembly and maintenance by workers. A tray 5 is formed circumferentially at the bottom of the guide member 1. A second fixing clip can also be provided on the tray 5. The second fixing clip is snapped onto the lower end of the spring 2. The connection is made through the first fixing clip and the second fixing clip. By pressing the first fixing clip and the second fixing clip, the spring 2 can be placed in the area to be clamped by the first fixing frame and the second fixing frame to fix the spring 2. If disassembly is required, the first fixing clip and the second fixing frame can be pressed open to remove the spring 2. This setting facilitates the disassembly, replacement and maintenance of the spring 2, and can reduce the difficulty of maintenance.

[0039] The top of the guide member 1 is provided with a limiting member, and the float 3 abuts against the lower side of the limiting member. The limiting member can prevent the float 3 from coming off the upper end of the guide member 1, so that the float 3 can always reciprocate along the axis of the guide member 1.

[0040] It should be noted that the spring 2 of this utility model can also be fixedly connected to the float above by other means such as snap-fit ​​or hinge, and is not limited to the connection by abutment, welding or snap-fit, as long as the fixed connection between the float and the spring can be achieved.

[0041] 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 various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments 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.

Claims

1. An oil level sensor assembly, characterized in that, Includes a guide (1), on which a float (3) and a spring (2) are fitted. The spring (2) is located below the float (3), with the upper end of the spring (2) fixedly connected to the float (3) and the lower end of the spring (2) fixedly connected to the guide (1).

2. The oil level sensor assembly according to claim 1, characterized in that, The float (3) and the spring (2) are fixedly connected by a connecting structure.

3. The oil level sensor assembly according to claim 2, characterized in that, The connection structure includes a first annular groove (4) disposed on the lower end face of the float (3), the upper end of the spring (2) is inserted into the first annular groove (4), and the spring (2) is engaged with the side wall of the first annular groove (4).

4. The oil level sensor assembly according to claim 3, characterized in that, The upper end of the spring (2) is welded to the bottom surface of the first annular groove (4).

5. The oil level sensor assembly according to claim 1, characterized in that, The bottom of the guide (1) is circumferentially provided with a tray (5), and the lower end of the spring (2) is fixed on the tray (5).

6. The oil level sensor assembly according to claim 5, characterized in that, A second annular groove is formed on the tray (5), and the lower end of the spring (2) is inserted into the second annular groove. The spring (2) is engaged with the side wall of the second annular groove.

7. The oil level sensor assembly according to claim 6, characterized in that, The lower end of the spring (2) is welded to the bottom surface of the second annular groove.

8. The oil level sensor assembly according to claim 2, characterized in that, The connection structure includes a sleeve ring (7) disposed on the lower end face of the float (3), and the sleeve ring (7) is engaged with the upper end of the spring (2).

9. The oil level sensor assembly according to claim 8, characterized in that, The bottom of the guide member (1) is circumferentially formed with a tray (5), and the tray (5) is provided with a second fixing clip, which is engaged with the lower end of the spring (2).

10. A compressor, characterized in that, The oil level sensor assembly includes any one of claims 1-9, and the oil level sensor assembly is mounted on the lower housing cover (6).

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