Liquid level sensor and compressor using the same
A liquid level sensor and compressor technology, applied in the field of compressors, can solve the problems of difficult replacement of magnetic sensors, large installation space requirements, high viscosity, etc., achieve good welding strength and sealing effect, low installation space requirements, and liquid level The effect of detecting accurate
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Example Embodiment
[0045] Example one:
[0046] The compressor housing 8 is provided with an oil storage cavity 14 for frozen lubricating oil, such as figure 1 As shown, the compressor casing 8 is provided with an opening, a liquid level sensor is installed at the opening, and the liquid level sensor detects the level change of the frozen lubricating oil in the oil storage cavity 14.
[0047] In this embodiment, the liquid level sensor includes a housing 4, a filter screen 1, a floating ball 2, and a sensor 5.
[0048] The housing 4 of the liquid level sensor has an opening, and the opening of the housing 4 is in sealed connection with the opening of the compressor housing 8. In this embodiment, the housing 4 protrudes outward relative to the compressor housing 8, and the liquid level sensor does not occupy the internal space of the compressor, which is especially suitable for small semi-hermetic and hermetic compressors.
[0049] The casing 4 can be connected to the opening of the compressor casing 8 b...
Example Embodiment
[0068] Embodiment two:
[0069] Reference figure 2 The difference between this embodiment and the first embodiment is that a permanent magnet 3 is provided on the floating ball 2, and the permanent magnet 3 is embedded in the middle position below the floating ball 2. The mass of the permanent magnet 3 makes the center of gravity of the floating ball 2 offset, thereby Stable at the bottom, the sensor 5 is installed on the outer wall surface of the lower part of the housing 4.
Example Embodiment
[0070] Embodiment three:
[0071] Reference image 3 The difference between this embodiment and the first embodiment is that the liquid level sensor further includes a hollow guide tube 11 extending from the housing 4 of the liquid level sensor to the detection cavity 13. At least one end of the guide tube 11 is provided with an opening. Through the opening, the hollow inner space of the guide tube 11 communicates with the external environment, but is isolated from the detection chamber 13. The guide tube 11 may also penetrate through the housing 4 or not through the housing 4. In this embodiment, both ends of the guide tube 11 are sealed and fixedly connected with the housing 4, and one end is provided with an opening. The guide tube 11 may be a hollow tube provided separately, or a hollow tube extending from the housing 4, and the other end may be connected to the housing 4 or not. The guide tube 11 may be a circular hollow tube, a square hollow tube, etc., which is not limite...
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