Oil filter for refrigeration compressors

Abstract

This utility model discloses an oil filter for a refrigeration compressor, including an oil filter and a monitoring mechanism. The monitoring mechanism is located at the bottom of the oil filter and includes a bottom tube, a mounting ring, a spring, a piston, a through hole, a flange tube, a flange cover, and a float-type oil level sensor. The bottom tube is vertically welded to the center of the bottom of the oil filter. As impurities accumulate and clog the surface of the filter element, the oil supply pressure inside the oil filter gradually increases. When the internal pressure of the oil filter reaches a certain level, the lubricating oil entering the oil filter will push the piston down, causing the spring to be further compressed, opening the bottom tube and allowing lubricating oil to enter. At this time, the monitoring end of the float-type oil level sensor floats under the action of the lubricating oil and outputs a switch signal to the equipment operation control terminal, facilitating timely cleaning and replacement of the filter element, ensuring the quality of lubricating oil filtration, and preventing the oil filter from being under high pressure for a long time.

Description

Technical Field

[0001] This utility model relates to the field of compressor component technology, and in particular to an oil filter for a refrigeration compressor. Background Technology

[0002] A refrigeration compressor is a mechanical device used to compress and transport gaseous refrigerant. It is the core and heart of a refrigeration system. The capacity and characteristics of the compressor determine the capacity and characteristics of the refrigeration system. It is also an essential and important component of refrigeration equipment and systems. An oil filter is an oil filtration component that is installed in conjunction with a refrigeration compressor. It can effectively filter the lubricating oil during the circulation process.

[0003] Existing oil filters for refrigeration compressors have the following drawbacks: During use and maintenance, common oil filters for refrigeration compressors require regular cleaning and replacement of the internal filter element. However, in actual use, the replacement interval is generally judged based on the operator's experience. The actual degree of clogging of the internal filter element is greatly affected by factors such as equipment usage time, equipment wear, and oil quality. Therefore, manual judgment is not accurate enough. Especially when the machine is severely worn or the oil quality is poor, the filter element's service life will be shortened. If it is not replaced in time, it can easily affect the operating quality and normal operation of the refrigeration compressor. Therefore, we propose an oil filter for refrigeration compressors. Utility Model Content

[0004] The main purpose of this utility model is to provide an oil filter for refrigeration compressors. By setting a monitoring mechanism at the bottom of the oil filter, the degree of blockage of the filter element inside the oil filter can be monitored, which facilitates timely replacement and maintenance after the filter element is blocked, and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An oil filter for a refrigeration compressor includes an oil filter and a monitoring mechanism. The monitoring mechanism is located at the bottom of the oil filter and includes a bottom tube, a mounting ring, a spring, a piston, a through hole, a flange tube, a flange cover, and a float-type oil level sensor. The bottom tube is vertically welded to the center of the bottom of the oil filter. The piston is movably connected to the top of the mounting ring via a spring, and the piston surface is in contact with the position where the inner diameter of the bottom tube changes. The mounting ring is entirely placed inside the bottom tube, and a through hole is vertically opened inside it. A flange tube is welded to the side of the bottom tube, and a flange cover is detachably connected to the end of the flange tube via bolts. A float-type oil level sensor is installed on the side of the flange cover facing the inside of the flange tube.

[0006] Furthermore, an oil inlet pipe is horizontally welded to the top side of the oil filter, and an oil outlet pipe is vertically installed at the center of the top of the oil filter. The lubricating oil to be treated is input into the oil filter through the oil inlet pipe, and the lubricating oil after filtration is discharged through the oil outlet pipe and enters the compressor.

[0007] Furthermore, a bracket is welded to the bottom of the oil filter, and a filter element is installed between the top of the bracket and the top cover of the oil filter; the bracket inside the oil filter supports the filter element structure, and the filter element filters the lubricating oil entering the oil filter.

[0008] Furthermore, the bottom of the bottom tube is screwed to an end cap, and a rubber ring is fitted at the connection between the outer periphery of the end cap and the bottom tube. A top rod is vertically welded to the top of the end cap, and a top ring is integrally formed on the top of the top rod and fits to the bottom of the mounting ring. After the end cap is tightened in place, the rubber ring is located at the connection, which can ensure the sealing of the connection. At the same time, the top ring is installed on the top of the end cap through the top rod. The length of the top rod structure is customized according to the specifications of the internal filter element of the oil filter and the equipment usage, so that after the end cap is installed in place, the top ring restricts the position of the mounting ring, and the spring is in a preset compression state.

[0009] Furthermore, the monitoring end of the float-type oil level sensor penetrates through the inside of the flange pipe and extends into the inside of the bottom pipe. A communication line connected to an external signal receiving device is installed on the end of the flange cover away from the float-type oil level sensor. When the float-type oil level sensor detects that oil has entered the bottom pipe, it will transmit the signal to the equipment operation control terminal through the communication line to provide a prompt.

[0010] Compared with the prior art, this utility model has the following advantages: The oil filter is installed on the side of the refrigeration compressor, with the inlet pipe connected to the oil supply line and the outlet pipe connected to the compressor's oil supply line. The filter element inside the oil filter is fixed by a bracket for filtering the lubricating oil. An end cap is screwed into the top of the bottom tube. The length of the push rod structure is customized according to the specifications of the filter element inside the oil filter and the equipment usage, ensuring that after the end cap is installed, the top ring is positioned precisely in the middle of the bottom tube, restricting the installation ring position. Simultaneously, the spring is in a preset compressed state. At this time, the piston surface conforms to the changing position of the inner diameter of the bottom tube, blocking the top of the bottom tube. During the lubricating oil filtration process, this prevents oil from leaking out. When the oil filter is in normal use, as impurities accumulate and clog the surface of the filter element, the internal oil supply pressure will gradually increase. When the internal pressure of the oil filter reaches a certain level, the lubricating oil entering the oil filter will push the piston down, causing the spring to be further compressed. The bottom tube will open, and the lubricating oil will enter the bottom tube and pass through the through hole. At this time, the monitoring end of the float-type oil level sensor floats under the action of the lubricating oil, driving the magnetic reed switch inside the sensor and outputting a switch signal to the equipment operation control terminal. This facilitates timely cleaning and replacement of the filter element, ensuring the quality of lubricating oil filtration and preventing the oil filter from being in a high-pressure state for a long time. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of an oil filter for a refrigeration compressor according to the present invention.

[0012] Figure 2 This is a schematic diagram of the internal bottom structure of an oil filter for a refrigeration compressor according to the present invention.

[0013] Figure 3 This is a schematic diagram of the monitoring mechanism of an oil filter for a refrigeration compressor according to the present invention.

[0014] Figure 4 This is a schematic diagram of the internal filter element structure of an oil filter for a refrigeration compressor according to the present invention.

[0015] In the diagram: 1. Oil filter; 101. Inlet pipe; 102. Outlet pipe; 103. Bracket; 104. Filter element; 2. Monitoring mechanism; 201. Bottom pipe; 202. End cap; 203. Rubber ring; 204. Top rod; 205. Top ring; 206. Mounting ring; 207. Spring; 208. Piston; 209. Through hole; 210. Flange pipe; 211. Flange cover; 212. Float-type oil level sensor; 213. Communication line. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figure 1-4 As shown, an oil filter for a refrigeration compressor includes an oil filter 1 and a monitoring mechanism 2. The monitoring mechanism 2 is located at the bottom of the oil filter 1. The monitoring mechanism 2 includes a bottom tube 201, a mounting ring 206, a spring 207, a piston 208, a through hole 209, a flange tube 210, a flange cover 211, and a float-type oil level sensor 212. The bottom tube 201 is vertically welded to the center of the bottom of the oil filter 1. The piston 208 is movably connected to the top of the mounting ring 206 via the spring 207, and the surface of the piston 208 is in contact with the position where the inner diameter of the bottom tube 201 changes. The mounting ring 206 is entirely placed inside the bottom tube 201, and a through hole 209 is vertically opened inside it. The flange tube 210 is welded to the side of the bottom tube 201, and the flange cover 211 is detachably connected to the end of the flange tube 210 via bolts. The float-type oil level sensor 212 is installed on the side of the flange cover 211 facing the inside of the flange tube 210.

[0018] The oil filter 1 has an oil inlet pipe 101 horizontally welded to the top side, an oil outlet pipe 102 vertically arranged at the center of the top, and a bracket 103 welded to the bottom inside the oil filter 1. A filter element 104 is installed between the top of the bracket 103 and the top cover of the oil filter 1. The lubricating oil to be treated is input into the oil filter 1 through the oil inlet pipe 101. After filtration, the lubricating oil is discharged through the oil outlet pipe 102 and enters the compressor. The bracket 103 inside the oil filter 1 supports the structure of the filter element 104, and the filter element 104 filters the lubricating oil entering the oil filter 1.

[0019] The bottom of the bottom pipe 201 is screwed to an end cap 202, and a rubber ring 203 is fitted between the outer periphery of the end cap 202 and the bottom pipe 201. A top rod 204 is vertically welded to the top of the end cap 202, and a top ring 205 is integrally formed on the top of the top rod 204 and fits to the bottom of the mounting ring 206. The monitoring end of the float-type oil level sensor 212 penetrates through the inside of the flange pipe 210 and extends into the inside of the bottom pipe 201. A communication line 213 for connecting to an external signal receiving device is installed on the surface of the flange cover 211 away from the float-type oil level sensor 212. After 02 is tightened in place, the rubber ring 203 is located at the connection point, which can ensure the sealing of the connection point. At the same time, the top of the end cover 202 is equipped with a top ring 205 through the top rod 204. The structural length of the top rod 204 is customized according to the specifications of the internal filter element 104 of the oil filter 1 and the equipment usage. After the end cover 202 is installed in place, the top ring 205 restricts the position of the installation ring 206. Meanwhile, the spring 207 is in a preset compression state. When the float-type oil level sensor 212 detects that oil has entered the bottom pipe 201, it will transmit the signal to the equipment operation control terminal through the communication line 213 to provide a prompt.

[0020] It should be noted that this utility model is an oil filter for a refrigeration compressor. In use, the oil filter 1 is installed on the side of the refrigeration compressor. The oil inlet pipe 101 is connected to the oil supply line, and the oil outlet pipe 102 is connected to the compressor oil supply line. The filter element 104 is fixed inside the oil filter 1 by the bracket 103 to filter the lubricating oil. The end cap 202 is screwed into the top of the bottom pipe 201. The length of the push rod 204 is customized according to the specifications of the filter element 104 inside the oil filter 1 and the equipment usage, so that after the end cap 202 is installed, the top ring 205 is exactly in the middle of the bottom pipe 201, restricting the position of the installation ring 206. At the same time, the spring 207 is in a preset compressed state. At this time, the surface of the piston 208 is in contact with the changing position of the inner diameter of the bottom pipe 201, blocking the top position of the bottom pipe 201. During the lubricating oil filtration process, oil is prevented from entering. Oil filter 1 is used normally. During the use of oil filter 1, as impurities accumulate and clog the surface of filter element 104, the oil supply pressure inside oil filter 1 will gradually increase. When the internal pressure of oil filter 1 reaches a certain level, the lubricating oil entering oil filter 1 will squeeze piston 208 downward, causing spring 207 to be further compressed. The bottom tube 201 will open, and lubricating oil will enter the bottom tube 201 and pass through through hole 209. At this time, the monitoring end of float-type oil level sensor 212 floats under the action of lubricating oil, driving the magnetic reed switch inside the sensor and outputting a switch signal to the equipment operation control terminal, which facilitates timely cleaning and replacement of filter element 104, ensuring the quality of lubricating oil filtration and preventing oil filter 1 from being in a high-pressure state for a long time.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil filter for refrigeration compressors, comprising an oil filter (1), characterized in that, It also includes a monitoring mechanism (2), which is provided at the bottom of the oil filter (1). The monitoring mechanism (2) includes a bottom pipe (201), a mounting ring (206), a spring (207), a piston (208), a through hole (209), a flange pipe (210), a flange cover (211), and a float-type oil level sensor (212). The bottom pipe (201) is vertically welded to the center of the bottom of the oil filter (1). The top of the mounting ring (206) is movably connected to a movable piston via the spring (207). The piston (208) is attached to the inner diameter of the bottom tube (201) at the position where the inner diameter changes. The mounting ring (206) is placed inside the bottom tube (201) and has a through hole (209) in the vertical direction inside. The bottom tube (201) is welded to the side of the flange tube (210) and the flange tube (210) is detachably connected to the end of the flange tube (210) by bolts. A float-type oil level sensor (212) is installed on the side of the flange cover (211) facing the inside of the flange tube (210).

2. An oil filter for refrigerant compressors according to claim 1, characterized in that: The oil filter (1) has an oil inlet pipe (101) welded horizontally at the top side, and an oil outlet pipe (102) is provided vertically at the center of the top of the oil filter (1).

3. The oil filter for refrigerant compressor according to claim 1, characterized in that: The oil filter (1) has a bracket (103) welded to the bottom inside, and a filter element (104) is installed between the top of the bracket (103) and the top cover of the oil filter (1).

4. The oil filter for a refrigerant compressor according to claim 1, characterized in that: The bottom tube (201) is screwed to the end cap (202), and a rubber ring (203) is sleeved at the connection between the outer periphery of the end cap (202) and the bottom tube (201). The top of the end cap (202) is vertically welded to the top of the top rod (204), and the top of the top rod (204) is integrally formed with a top ring (205) that fits to the bottom of the mounting ring (206).

5. The oil filter for a refrigerant compressor according to claim 1, characterized in that: The monitoring end of the float-type oil level sensor (212) penetrates the inside of the flange pipe (210) and extends into the inside of the bottom pipe (201). A communication line (213) for connecting to an external signal receiving device is installed on the surface of the flange cover (211) away from the float-type oil level sensor (212).

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