Oil-gas separation device for compressor and compressor

Abstract

The utility model belongs to refrigeration compressor technical field, specifically discloses a kind of oil-gas separation device and compressor for compressor.The utility model's oil-gas separation device for compressor is applied to compressor, realizes the efficient separation and controllable backflow of lubricating oil, and effectively improves the reliability and system efficiency of compressor work.Significantly reduced the consumption of lubricating oil inside compressor, ensure that internal oil amount is basically constant, effectively reduce the wear and tear problem of moving part due to oil shortage, prolong the service life of compressor.Lubricating oil amount that reduces into refrigeration cycle system, avoid the problem such as increased exhaust resistance, exhaust not smooth and exhaust temperature rise etc. due to lubricating oil accumulation in system pipeline, while, reduce the loss generated due to lubricating oil discharge in system pipeline.In addition, effectively reduce the valve plate, valve piece carbon deposition risk caused by heat discharge not in time inside compressor, ensure the stability and reliability of compressor operation.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration compressor technology, and relates to an oil-gas separation device for compressors and a compressor. Background Technology

[0002] Currently, in order to prevent wear on the friction pairs of moving parts, the oil pump system designed for reciprocating piston refrigeration compressors needs to lubricate the friction pairs of each moving part when the compressor is running at high speed.

[0003] During piston lubrication between the piston and the piston bore of the compressor frame, it is difficult to avoid lubricating oil entering the refrigeration cycle system as the piston rotates and is carried by the high-pressure exhaust. This not only leads to continuous consumption of lubricating oil inside the compressor, causing accelerated wear of moving parts due to insufficient oil and reducing their service life, but also increases exhaust resistance due to the accumulation of lubricating oil in the system pipelines, causing poor exhaust, increased exhaust temperature, and consequently carbon buildup on components such as the compressor's valve plate and valve disc. Simultaneously, the strong pulsation phenomenon during compressor exhaust is also one of the main sources of system vibration and noise.

[0004] Therefore, it is necessary to propose an improved oil-gas separation device and compressor that can achieve efficient separation and controllable reflux of lubricating oil, so as to improve the reliability and efficiency of compressor operation. Utility Model Content

[0005] The purpose of this invention is to propose an oil-gas separation device and compressor for compressors, so as to achieve efficient separation and controllable reflux of lubricating oil.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: An oil-gas separator for a compressor, comprising: Oil storage tanks have a hollow interior. The intake pipe has one end leading into the oil storage tank from the bottom, and the other end connecting to the compressor's exhaust port. The exhaust pipe has one end leading into the oil storage tank from the top, and the other end is used to connect to the piping of the refrigeration cycle system. The oil return pipe has one end leading into the oil storage tank from the bottom, and the other end connecting to the compressor's oil return nozzle. The compressor's oil return nozzle is connected to the inside of the compressor. The electrically controlled valve is connected to the return oil pipe. The electrically controlled valve is used to open and close the return oil pipe. The electrically controlled valve allows unidirectional flow from one end of the return oil pipe to the other. The controller is the control terminal of the electrically controlled valve, which is connected to the signal.

[0007] Preferably, the oil storage tank is configured as a sound-absorbing package inside the compressor.

[0008] Preferably, the electrically controlled valve is configured as an electrically controlled check valve.

[0009] Preferably, one end of the air inlet pipe is higher than the inner bottom of the oil storage tank.

[0010] Preferably, one end of the air inlet pipe is located between 1 / 3 and 3 / 4 of the internal height of the oil storage tank.

[0011] Preferably, the air inlet pipe is configured as a zigzag structure shaped like the Chinese character "几".

[0012] Preferably, at least part of the air inlet pipe is made of plastic.

[0013] A compressor is provided with the above-mentioned oil-gas separation device for compressors.

[0014] Compared with the prior art, the oil-gas separation device for compressors and the compressor of the present utility model have the following beneficial effects: 1. The present utility model realizes efficient separation and controllable backflow of lubricating oil, and effectively improves the working reliability and system efficiency of the compressor. By arranging the oil storage tank, the air inlet pipe, the exhaust pipe and the oil return pipe with an electrically controlled check valve, most of the lubricating oil carried by the high-pressure exhaust can be effectively separated and stored in the oil storage tank when the compressor operates at high speed; when the compressor stops operating, the controller triggers to open the electrically controlled check valve, so that the stored lubricating oil can flow back to the inside of the compressor in a controllable manner. This not only significantly reduces the consumption of lubricating oil inside the compressor, ensures that the internal oil amount is basically constant, effectively alleviates the problem of aggravated wear of moving parts caused by oil shortage, and prolongs the service life of the compressor. By effectively separating and storing the lubricating oil discharged along with the high-pressure gas, the amount of lubricating oil entering the refrigeration cycle system is reduced, problems such as increased exhaust resistance, poor exhaust and increased exhaust temperature caused by the accumulation of lubricating oil in the system pipeline are avoided, and at the same time, the loss caused by the discharge of lubricating oil in the system pipeline is reduced. In addition, the risk of carbon deposition on the valve plate and valve plates caused by untimely heat discharge inside the compressor is effectively reduced, and the stability and reliability of compressor operation are guaranteed.

[0015] 2. The present utility model effectively reduces exhaust pulsation, vibration and noise. By configuring the air inlet pipe as a zigzag structure shaped like the Chinese character "几", and / or adopting an air inlet pipe at least partially made of plastic, combined with the increased exhaust volume of the oil storage tank itself, the exhaust pulsation can be significantly reduced, thereby further lowering the vibration and operating noise of the entire system.

[0016] 3. This utility model achieves structural optimization and integration. For compressors with sufficiently large volume silencers, the oil tank can be directly set as the silencer inside the compressor, achieving functional integration and structural simplification, saving space and cost. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the structure of the oil-gas separator for the compressor in Embodiment 1 of this utility model; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the oil-gas separator for the compressor in Embodiment 2 of this utility model; Figure 4 This is a partial structural schematic diagram of the oil-gas separator for the compressor in Embodiment 2 of this utility model; in, 1. Oil storage tank; 21. Air inlet pipe; 22. Exhaust pipe; 23. Oil return pipe; 3. Electrically controlled check valve; 4. Controller; 41. Signal cable; 5. Compressor; 51. Exhaust nozzle; 52. Oil return nozzle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] Example 1 like Figure 1 , Figure 2 As shown, the oil-gas separation device for compressors in this embodiment includes an oil storage tank 1, an air inlet pipe 21, an exhaust pipe 22, an oil return pipe 23, an electrically controlled check valve 3, and a controller 4.

[0026] For compressor 5 that does not have a silencing package or has a small silencing package volume, an additional oil storage tank 1 is required. The interior of the oil storage tank 1 is a hollow cavity structure.

[0027] One end of the intake pipe 21 is introduced into the oil storage tank 1 from the lower end, and the other end of the intake pipe 21 is used to connect to the exhaust port 51 of the compressor 5. The other end of the intake pipe 21 is connected to the exhaust port 51 of the compressor 5 by resistance welding or fusion welding.

[0028] One end of the intake pipe 21 is higher than the bottom of the oil tank 1 to avoid excessive lubricating oil carried by the high-pressure exhaust of the compressor during high-speed operation, which could block the intake pipe 21 and affect the compressor's exhaust efficiency.

[0029] One end of the intake pipe 21 is located between 1 / 3 and 3 / 4 of the height inside the oil tank, which prevents excessive lubricating oil from clogging the intake pipe 21 and also prevents a large amount of lubricating oil from being discharged directly into the refrigeration cycle system pipeline through the exhaust pipe 22 with the high-pressure exhaust.

[0030] The intake pipe 21 is configured with a U-shaped bend to reduce the exhaust pulsation of the compressor 5. At least part of the intake pipe 21 is made of plastic, and the plastic part of the intake pipe 21 is connected to the metal part of the intake pipe 21 via a locating ring, which also helps to reduce the exhaust pulsation of the compressor 5.

[0031] One end of the exhaust pipe 22 is introduced into the oil storage tank 1 from the top, and the other end of the exhaust pipe 22 is used to connect to the piping of the refrigeration cycle system. Specifically, the other end of the exhaust pipe 22 is connected to the piping of the refrigeration cycle system by resistance welding or fusion welding.

[0032] One end of the oil return pipe 23 is introduced into the oil storage tank 1 from the lower end, and the other end of the oil return pipe 23 is used to connect to the oil return nozzle 52 of the compressor 5. One end of the oil return pipe 23 is flush with the bottom of the inside of the oil storage tank 1 to ensure that the lubricating oil in the oil storage tank 1 is drained as completely as possible. The other end of the oil return pipe 23 is connected to the oil return nozzle 52 of the compressor 5 by resistance welding or fusion welding, and the oil return nozzle 52 of the compressor 5 is connected to the inside of the compressor 1.

[0033] The electrically controlled check valve 3 is connected to the return oil pipe 23. The electrically controlled check valve 3 is used to open and close the return oil pipe 23. The electrically controlled check valve 3 is unidirectionally open from one end of the return oil pipe 23 to the other end.

[0034] The controller 4 is connected to the control terminal of the electrically controlled check valve 3 via signal cable 41. The controller 4 triggers the electrically controlled check valve 3 to open or close the return oil pipe 23.

[0035] A compressor is provided with the oil-gas separation device for compressor described in this embodiment.

[0036] The oil-gas separator for compressors in this embodiment is applied to compressors, and its operation process is as follows: When compressor 5 is running at high speed, the high-pressure exhaust carrying lubricating oil enters oil tank 1 through exhaust nozzle 51 and intake pipe 21, and most of the lubricating oil is stored in oil tank 1. At this time, the controller triggers the electronically controlled check valve 3 to reset, causing the electronically controlled check valve 3 to close the oil return pipe 23, thus preventing airflow disturbance during compressor 5 operation.

[0037] When the compressor 5 stops running, the controller triggers the electric check valve 3 to open the oil return pipe 23, and the lubricating oil in the oil tank 1 flows back to the compressor 5 through the oil return pipe 23.

[0038] Example 2 like Figure 3 , Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that, for the compressor 5 with a silencing package and a large silencing package volume, the oil tank 1 is set as the silencing package inside the compressor 5. The signal cable 41, which is connected to the electronically controlled one-way valve 3, is connected to the sealing terminal 42, and the sealing terminal 42 is connected to the controller 4.

[0039] The present embodiment has now been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the oil-gas separator for compressors and the compressor of this utility model. Of course, the above description is only a preferred embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made under the inventive concept of this utility model, utilizing the content of this specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model and should be protected by this utility model.

Claims

1. An oil-gas separator for a compressor, characterized in that, comprising: an oil storage tank, the interior of which is a hollow cavity; an air inlet pipe, one end of the air inlet pipe is introduced into the oil storage tank from the lower end of the oil storage tank, and the other end of the air inlet pipe is used for connecting the exhaust nozzle of a compressor; an exhaust pipe, one end of the exhaust pipe is introduced into the oil storage tank from the upper end of the oil storage tank, and the other end of the exhaust pipe is used for connecting the pipeline of a refrigeration cycle system; an oil return pipe, one end of the oil return pipe is introduced into the oil storage tank from the lower end of the oil storage tank, and the other end of the oil return pipe is used for connecting the oil return nozzle of the compressor; wherein the oil return nozzle of the compressor is in communication with the interior of the compressor; an electronically controlled valve, connected to the oil return pipe, the electronically controlled valve is used to open and close the oil return pipe, and the electronically controlled valve is in unidirectional conduction from one end of the oil return pipe to the other end; a controller, in signal connection with the control end of the electronically controlled valve.

2. The oil-gas separation device for a compressor according to claim 1, characterized in that, the oil storage tank is configured as a silencing bag inside the compressor.

3. The oil-gas separation device for a compressor according to claim 1, characterized in that, the electronically controlled valve is configured as an electronically controlled one-way valve.

4. The oil-gas separation device for a compressor according to claim 1, characterized in that, one end of the air inlet pipe is higher than the inner bottom of the oil storage tank.

5. The oil-gas separation device for a compressor according to claim 4, characterized in that, one end of the air inlet pipe is located between 1 / 3 height and 3 / 4 height inside the oil storage tank.

6. The oil-gas separation device for a compressor according to claim 1, characterized in that, the air inlet pipe is configured as a zigzag structure shaped like the Chinese character "几".

7. The oil-gas separation device for a compressor according to claim 1, characterized in that, at least part of the air inlet pipe is made of plastic.

8. A compressor, characterized in that, the compressor is provided with the oil-gas separation device for a compressor according to any one of claims 1 to 7.

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