A rotary compressor capable of filtering refrigeration oil

Abstract

The utility model discloses a rotatory compressor can filter frozen oil, based on the only passage of compressor oil suction is through the oil suction hole of crankshaft bottom end, the utility model adds frozen oil filter screen in the lower cover, specifically speaking, in the middle section welding of compressor lower cover, arrange a piece of hollow filter screen, when actually assembling, the embedded groove of crankshaft end part inserts the embedded convex position of frozen oil filter screen center. After long -term use, the air conditioning system, the compressor cavity produces the impurity, and part of impurities will drop to the upper portion of frozen oil filter screen due to the gravity relation, and the crankshaft oil suction hole inhales the pure frozen oil after the filtration below frozen oil filter screen, avoids the risk of inhaling the impurity when the compressor works, thereby improves the stability of compressor performance, reduces the risk of compressor jam.

Description

Technical Field

[0001] This utility model relates to the field of compressor structure technology, and in particular to a rotary compressor capable of filtering refrigeration oil. Background Technology

[0002] Commercially available compressors typically have a filter 30 above the receiver 20. This filter 30 filters out impurities generated in the air conditioning system to ensure that the refrigerant entering the compression chamber is sufficiently pure. Figure 1 As shown.

[0003] However, after the compressor has been running for a long time, some impurities may fall to the bottom of the compressor oil sump, such as... Figure 2 As shown, this impurity 100 is likely to be sucked into the compressor's compression chamber along with the refrigeration oil in the oil sump, causing the compressor to seize up. Utility Model Content

[0004] The purpose of this invention is to provide a rotary compressor that can filter refrigeration oil, so as to solve the problem that after the compressor has been running for a long time, the impurities that fall off will be sucked into the compressor compression chamber along with the refrigeration oil in the oil sump, which will cause the compressor to seize up.

[0005] To solve the above-mentioned technical problems, this utility model provides a rotary compressor capable of filtering refrigeration oil, including a compressor body and a liquid receiver. A liquid receiver filter screen is provided above the liquid receiver. A refrigeration oil filter screen is also provided at the bottom of the oil sump inside the compressor body to block impurities falling during compressor operation above the refrigeration oil filter screen. The bottom end of the crankshaft inside the compressor body is installed on the refrigeration oil filter screen, and the oil suction hole of the crankshaft is connected to the space below the refrigeration oil filter screen to draw in the refrigeration oil below the refrigeration oil filter screen.

[0006] Preferably, the refrigeration oil filter is fixedly installed in the lower cover of the compressor body, dividing the oil sump into upper and lower spaces; the refrigeration oil can pass through the refrigeration oil filter into the space below the lower cover, while impurities are blocked above the refrigeration oil filter.

[0007] Preferably, the center of the refrigeration oil filter screen is provided with a fitting protrusion, which is adapted to the fitting groove at the bottom end of the crankshaft, so that the crankshaft is fitted and installed on the refrigeration oil filter screen.

[0008] Compared with the prior art, the beneficial effects of this utility model are: Since the only channel for compressor oil intake is through the oil suction hole at the bottom of the crankshaft, this invention adds a refrigerant oil filter screen inside the lower cover. Specifically, a filter screen with a hollow center is welded and arranged in the middle section of the compressor's lower cover. During actual assembly, the fitting groove at the end of the crankshaft is inserted into the fitting protrusion in the center of the refrigerant oil filter screen. After long-term use, impurities accumulate in the compressor cavity. Some of these impurities will fall to the upper part of the refrigerant oil filter screen due to gravity, while the crankshaft oil suction hole draws in pure refrigerant oil filtered below the filter screen. This avoids the risk of the compressor drawing in impurities during operation, thereby improving the stability of compressor performance and reducing the risk of compressor seizure. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of an existing rotary compressor. Figure 2 This is a schematic diagram of existing oil pool impurity deposition; Figure 3 This is a schematic diagram of the structure of a rotary compressor capable of filtering refrigeration oil provided by this utility model; Figure 4 This is a diagram showing the layout of the refrigeration oil filter screen provided by this utility model inside the lower cover.

[0010] In the diagram: 10, compressor body; 20, liquid receiver; 30, liquid receiver filter; 40, refrigeration oil filter; 50, crankshaft; 60, lower cover; 70, fitting protrusion; 100, impurities. Detailed Implementation

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0012] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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. Example

[0014] This invention provides a rotary compressor capable of filtering refrigeration oil. Please refer to [link / reference]. Figure 3 The compressor includes a compressor body 10 and a liquid receiver 20. A liquid receiver filter 30 is provided above the liquid receiver 20. A refrigerant oil filter 40 is also provided at the bottom of the oil sump inside the compressor body 10 to block impurities 100 falling during compressor operation above the refrigerant oil filter 40. The bottom end of the crankshaft 50 inside the compressor body 10 is mounted on the refrigerant oil filter 40. The oil suction hole of the crankshaft 50 is connected to the space below the refrigerant oil filter 40 to draw the refrigerant oil below the refrigerant oil filter 40.

[0015] For details, please refer to Figure 4 The refrigeration oil filter 40 is fixedly installed in the lower cover 60 of the compressor body 10, and divides the oil sump into upper and lower spaces; the refrigeration oil can pass through the refrigeration oil filter 40 into the lower space of the lower cover 60, and block the impurities 100 above the refrigeration oil filter 40.

[0016] Furthermore, the center of the refrigeration oil filter screen 40 is provided with a fitting protrusion 70, which is adapted to the fitting groove at the bottom end of the crankshaft 50, so that the crankshaft 50 is fitted and installed on the refrigeration oil filter screen 40.

[0017] Since the only channel for compressor oil suction is through the oil suction hole at the bottom of the crankshaft 50, this invention adds a refrigerant oil filter screen 40 inside the lower cover 60. Specifically, a filter screen with a hollow center is welded and arranged in the middle section of the compressor lower cover 60. During actual assembly, the fitting groove at the end of the crankshaft 50 is inserted into the fitting protrusion in the center of the refrigerant oil filter screen 40. After long-term use of the air conditioning system, impurities 100 will accumulate in the compressor cavity. Some of these impurities 100 will fall to the upper part of the refrigerant oil filter screen 40 due to gravity. The crankshaft oil suction hole draws in pure refrigerant oil filtered below the refrigerant oil filter screen 40, avoiding the risk of the compressor sucking in impurities during operation, thereby improving the stability of compressor performance and reducing the risk of compressor seizure.

[0018] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A rotary compressor capable of filtering refrigeration oil, comprising a compressor body (10) and a liquid receiver (20), characterized in that, A liquid receiver filter screen (30) is provided above the liquid receiver (20); a refrigerant oil filter screen (40) is also provided at the bottom of the oil sump inside the compressor body (10) to block impurities (100) falling during the operation of the compressor above the refrigerant oil filter screen (40); and the bottom end of the crankshaft (50) inside the compressor body (10) is installed on the refrigerant oil filter screen (40), and the oil suction hole of the crankshaft (50) is connected to the space below the refrigerant oil filter screen (40) to suck up the refrigerant oil below the refrigerant oil filter screen (40).

2. A rotary compressor capable of filtering refrigeration oil as described in claim 1, characterized in that, The refrigeration oil filter (40) is fixedly installed in the lower cover (60) of the compressor body (10) and divides the oil sump into two spaces, upper and lower. The refrigeration oil can pass through the refrigeration oil filter (40) into the space below the lower cover (60) and block impurities (100) above the refrigeration oil filter (40).

3. A rotary compressor capable of filtering refrigeration oil as described in claim 2, characterized in that, The center of the refrigeration oil filter screen (40) is provided with a fitting protrusion (70), which is adapted to the fitting groove at the bottom of the crankshaft (50) so that the crankshaft (50) is fitted and installed on the refrigeration oil filter screen (40).

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