WO2024260049A1 - 油分离器及空调系统 - Google Patents

油分离器及空调系统 Download PDF

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Publication number
WO2024260049A1
WO2024260049A1 PCT/CN2024/083467 CN2024083467W WO2024260049A1 WO 2024260049 A1 WO2024260049 A1 WO 2024260049A1 CN 2024083467 W CN2024083467 W CN 2024083467W WO 2024260049 A1 WO2024260049 A1 WO 2024260049A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
return pipe
oil return
filter
fixing seat
Prior art date
Application number
PCT/CN2024/083467
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English (en)
French (fr)
Inventor
王文杰
陈佳杨
潘荣旺
Original Assignee
浙江盾安人工环境股份有限公司
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Application filed by 浙江盾安人工环境股份有限公司 filed Critical 浙江盾安人工环境股份有限公司
Publication of WO2024260049A1 publication Critical patent/WO2024260049A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00

Definitions

  • the present application relates to the technical field of oil separation, and in particular to an oil separator and an air conditioning system.
  • the air conditioning compressor needs lubricating oil for lubrication during operation, but the lubricating oil will be discharged along with the refrigerant when the compressor discharges the refrigerant.
  • the presence of lubricating oil will increase the thermal resistance of the air conditioning system pipeline, reduce the heat transfer effect, and thus reduce the cooling or heating efficiency of the air conditioning system; on the other hand, if the lubricating oil is not returned to the compressor in time, the service life of the compressor will be shortened.
  • the oil separator is used to separate the lubricating oil and the refrigerant, and return the separated lubricating oil to the compressor through the oil return pipe.
  • a filter is usually installed at the entrance of the oil return pipe.
  • the existing filter is prone to deformation or damage during long-term use, which reduces the filtering area of the filter and affects the filtering effect of the filter.
  • the present application provides an oil separator, which includes a cylinder, an oil return pipe and a filter screen, wherein one end of the cylinder is provided with a mounting hole, one end of the oil return pipe is inserted into the mounting hole and connected to the cylinder through the mounting hole; one end of the filter screen is installed at the connection between the oil return pipe and the cylinder, at least part of the filter screen is located in the oil return pipe, and the filter screen is along the cylinder
  • the axial direction of the body protrudes in a direction away from the cylinder to form a filter groove, and the opening of the filter groove faces a direction close to the cylinder.
  • the oil separator further includes a fixing seat, the fixing seat is connected to the oil return pipe and inserted into one end of the cylinder, and the filter is connected to the fixing seat and installed on the oil return pipe through the fixing seat.
  • the fixing seat includes a first sleeve and a second sleeve, the first sleeve is arranged on the outer periphery of the second sleeve, the end of the filter net close to the opening of the filter tank is clamped between the first sleeve and the second sleeve, and the first sleeve and the second sleeve are interference fit.
  • one end of the first sleeve away from the filter tank opening is bent toward the axis of the cylinder and stopped at the outside of the filter screen.
  • the oil separator further includes a fixing seat, the fixing seat is connected to the oil return pipe and inserted into one end of the cylinder, and the end of the filter screen close to the opening of the filter tank is clamped between the fixing seat and the oil return pipe.
  • the filter screen includes a main body and a connecting portion which are connected to each other.
  • the main body is arranged in the oil return pipe, and one end of the main body close to the opening of the filter tank is folded outward to form the connecting portion.
  • the connecting portion is located outside the oil return pipe, and the connecting portion is clamped between the outer wall of the oil return pipe and the inner wall of the mounting hole.
  • the inner wall of the oil return pipe is provided with a first step, and the fixing seat is directly or indirectly in contact with the first step; and/or the end surface of the fixing seat close to the inside of the cylinder is flush with the end surface of the oil return pipe close to the inside of the cylinder.
  • the inner diameter of the filter screen tends to decrease.
  • the end of the cylinder away from the oil return pipe is connected to an air inlet pipe and an air outlet pipe
  • the oil separator also includes a connecting piece, and a plurality of the connecting pieces are respectively connected to the end of the air inlet pipe away from the cylinder, the end of the air outlet pipe away from the cylinder, and the end of the oil return pipe away from the cylinder;
  • the connecting piece is made of copper
  • the cylinder, the oil return pipe, the air inlet pipe, the air outlet pipe and the filter are all made of stainless steel.
  • the present application also provides an air conditioning system, which includes the oil separator described in any one of the above embodiments.
  • FIG1 is a schematic structural diagram of an oil separator according to an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of an oil separator according to an embodiment of the present application.
  • FIG. 3 is an enlarged view of point A in FIG. 2 .
  • FIG. 4 is a schematic structural diagram of an oil separator according to an embodiment of the present application.
  • FIG. 5 is an enlarged view of point B in FIG. 4 .
  • FIG. 6 is a schematic structural diagram of an oil separator according to an embodiment of the present application.
  • FIG. 7 is an enlarged view of point C in FIG. 6 .
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality” is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
  • a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or that the first feature and the second feature are indirectly in contact through an intermediate medium.
  • a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below the second feature. It may mean that the first feature is smaller than the second feature in horizontal height.
  • the air conditioning compressor needs lubricating oil for lubrication during operation, but the lubricating oil will be discharged along with the refrigerant when the compressor discharges the refrigerant.
  • the presence of lubricating oil will increase the thermal resistance of the air conditioning system pipeline, reduce the heat transfer effect, and thus reduce the cooling or heating efficiency of the air conditioning system; on the other hand, if the lubricating oil is not returned to the compressor in time, the service life of the compressor will be shortened.
  • the oil separator is used to separate the lubricating oil and the refrigerant, and return the separated lubricating oil to the compressor through the oil return pipe.
  • a filter is usually installed at the entrance of the oil return pipe.
  • the existing filter is prone to deformation or damage during long-term use, which reduces the filtering area of the filter and affects the filtering effect of the filter.
  • the present application provides an oil separator 100 .
  • the oil separator 100 is connected to the outlet of the compressor to separate the lubricating oil and the refrigerant and allow the lubricating oil to flow back to the compressor.
  • the oil separator 100 includes a barrel 10, an oil return pipe 20, and a filter 30.
  • One end of the barrel 10 is provided with a mounting hole 11.
  • One end of the oil return pipe 20 is inserted into the mounting hole 11 and connected to the barrel 10 through the mounting hole 11.
  • One end of the filter 30 is installed at the connection between the oil return pipe 20 and the barrel 10. At least part of the filter 30 is located in the oil return pipe 20.
  • the filter 30 protrudes along the axial direction of the barrel 10 in a direction away from the barrel 10 to form a filter groove 31.
  • the opening of the filter groove 31 faces the barrel 10. direction.
  • the present application can filter impurities in the lubricating oil by setting a filter 30, preventing impurities from entering the compressor through the oil return pipe 20 and reducing the service life of the compressor.
  • the opening direction of the filter tank 31 in the present application is toward the direction close to the cylinder 10, that is, the lubricating oil in the present application will first enter the filter tank 31 through the opening of the filter tank 31.
  • the filter 30 is not easy to deform under the pressure of the lubricating oil, avoiding the filter 30 being squeezed by the lubricating oil, causing the filter 30 to be easily deformed toward the inside of the filter tank 31, thereby effectively ensuring the filtering area of the filter 30 and improving the filtering effect of the filter 30.
  • the inner wall of the mounting hole 11 is provided with a second step 111, and the second step 111 can stop at one end of the return oil pipe 20 close to the cylinder 10 to facilitate the insertion and positioning of the return oil pipe 20. This is beneficial to the subsequent welding between the return oil pipe 20 and the cylinder 10, thereby improving the installation efficiency of the return oil pipe 20.
  • an end of the cylinder 10 away from the oil return pipe 20 is connected to an inlet pipe 50 and an outlet pipe 60, the inlet pipe 50 is connected to the outlet of the compressor, and the mixed refrigerant enters the cylinder 10 through the inlet pipe 50, and oil and liquid are separated inside the cylinder 10.
  • the separated lubricating oil returns to the compressor through the oil return pipe 20, and the refrigerant flows out through the outlet pipe 60 for subsequent heat exchange.
  • the oil separator 100 further includes a connector 70, and the multiple connectors 70 are respectively connected to one end of the air inlet pipe 50 away from the cylinder 10, one end of the air outlet pipe 60 away from the cylinder 10, and one end of the oil return pipe 20 away from the cylinder 10.
  • the material of the connector 70 is copper
  • the material of the cylinder 10, the oil return pipe 20, the air inlet pipe 50, the air outlet pipe 60 and the filter 30 are all stainless steel.
  • the oil separator 100 can be The oil separator 100 can be welded to the connecting pipe in the air conditioning system through the connecting piece 70, which is helpful to reduce the welding difficulty, thereby improving the installation efficiency of the oil separator 100.
  • the inner diameter of the filter screen 30 tends to decrease.
  • the end of the filter screen 30 away from the opening of the filter tank 31 shrinks toward the axial direction of the filter tank 31 and forms a semicircle.
  • the trend of the inner diameter of the filter screen 30 decreasing includes a manner in which the inner diameter of the filter screen 30 first remains unchanged and then decreases.
  • the oil separator 100 further includes a fixing seat 40, which is connected to the oil return pipe 20 and inserted into one end of the cylinder 10.
  • the end of the filter 30 close to the opening of the filter tank 31 is sandwiched between the fixing seat 40 and the oil return pipe 20.
  • the installation of the filter 30 is relatively simple, which can improve the installation efficiency of the filter 30.
  • the fixing seat 40 by providing the fixing seat 40, the installation and fixing of the filter 30 can be facilitated, and the filter 30 can be prevented from loosening during use, causing impurities to enter the oil return pipe 20 and the compressor, thereby avoiding damage to the compressor.
  • the fixing seat 40 is annular, so that the structure of the fixing seat 40 is relatively simple, which can reduce the manufacturing cost of the fixing seat 40 and improve the manufacturing efficiency.
  • the outer wall of the fixing seat 40 is interference fit with the inner wall of the oil return pipe 20 .
  • connection strength between the fixing base 40 and the oil return pipe 20 is enhanced, and the fixing base 40 is prevented from being separated from the oil return pipe 20 during use, thereby ensuring the secure installation of the filter 30.
  • the filter screen 30 can be clamped between the fixing seat 40 and the oil return pipe 20 , thereby further achieving a secure installation of the filter screen 30 .
  • a first step 21 is disposed on the inner wall of the oil return pipe 20 , and the fixing seat 40 is indirectly in contact with the first step 21 .
  • the first step 21 can stop the fixing seat 40, which is convenient for positioning the fixing seat 40 and makes the installation of the fixing seat 40 easier.
  • the filter 30 is sandwiched between the fixing seat 40 and the oil return pipe 20
  • the fixing seat 40 abuts against the first step 21
  • the first step 21 can be formed by shrinking the oil return pipe 20 toward its own axial direction. In this way, the structure of the first step 21 is simple, which can greatly reduce the difficulty of manufacturing the oil return pipe 20.
  • the end surface of the fixing seat 40 close to the inside of the cylinder 10 is arranged flush with the end surface of the oil return pipe 20 close to the inside of the cylinder 10.
  • the end surface of the fixing seat 40 close to the inside of the cylinder 10 is the end surface of the fixing seat 40 close to the air outlet pipe 60
  • the end surface of the oil return pipe 20 close to the inside of the cylinder 10 is the end surface of the oil return pipe 20 close to the air outlet pipe 60 .
  • the fixing seat 40 can be prevented from hindering the flow of oil, thereby improving the oil recovery rate.
  • the end surface of the fixing seat 40 close to the air outlet pipe 60 may also be higher or lower than the end surface of the oil return pipe 20 close to the air outlet pipe 60 , which is not limited here.
  • the fixing base 40 , the filter screen 30 and the oil return pipe 20 are made of the same material, and the fixing base 40 , the filter screen 30 and the oil return pipe 20 are welded by argon arc welding or laser welding.
  • the material of the fixing seat 40 is also stainless steel. Since stainless steel has a higher hardness, is not easy to deform, and is cheaper than the existing copper material, the material cost can be greatly reduced. And since the fixing seat 40, the filter screen 30 and the oil return pipe 20 are made of the same material, when welded by argon arc welding or laser welding, the fixing seat 40, the filter screen 30 and the oil return pipe 20 can be self-melted and connected as one, which reduces the welding difficulty of the fixing seat 40, the filter screen 30 and the oil return pipe 20, and does not need to set solder, which can save the cost of solder. In addition, welding further increases the connection strength between the fixing seat 40, the filter screen 30 and the oil return pipe 20, and improves the installation firmness of the fixing seat 40 and the filter screen 30.
  • connection strength can be enhanced by welding.
  • the filter screen 30 is connected to the fixing base 40 and is installed on the oil return pipe 20 through the fixing base 40 .
  • the filter 30 and the fixing base 40 can be assembled first, which makes the installation of the filter 30 simpler and improves the installation efficiency of the filter 30 .
  • the fixing seat 40 includes a first sleeve 41 and a second sleeve 42, the first sleeve 41 is arranged on the outer periphery of the second sleeve 42, and the outer ring of the first sleeve 41 is fixedly connected to the inner wall of the oil return pipe 20.
  • the end of the filter screen 30 close to the opening of the filter tank 31 is sandwiched between the first sleeve 41 and the second sleeve 42, and the first sleeve 41 and the second sleeve 42 are interference fit.
  • the fixing base 40 has a simple structure and can fix the filter 30 without cooperating with other structures, thereby effectively reducing the difficulty of installing the filter 30 .
  • the fixing seat 40 further includes a limiting portion 43, which is connected to the first sleeve 41 and the second sleeve 41. The end near the opening of the filter slot 31 and the end near the opening of the second sleeve 42.
  • the stopper 43 can stop the filter screen 30 to prevent the filter screen 30 from protruding from the end of the fixing seat 40 and causing damage to the filter screen 30.
  • the stopper 43 also plays a positioning role for the filter screen 30, making the installation of the filter screen 30 simpler and reducing the difficulty of assembling the filter screen 30.
  • one end of the fixing seat 40 close to the opening of the filter tank 31 is stopped at the second step 111, and one end of the fixing seat 40 away from the opening of the filter tank 31 directly abuts against the first step 21.
  • the first step 21 and the second step 111 are stopped at both ends of the fixing seat 40, thereby limiting the movement of the fixing seat 40 along its own axial direction, and the installation of the fixing seat 40 is more stable, thereby ensuring the reliability of the use of the filter screen 30.
  • the filter 30 is directly mounted on the fixing base 40 , there is no separation of the filter 30 between the fixing base 40 and the first step 21 , so the fixing base 40 can directly abut against the first step 21 .
  • the end of the fixing seat 40 close to the opening of the filter tank 31 may not only be blocked by the second step 111 or be flush with the end surface of the oil return pipe 20 close to the air outlet pipe 60 .
  • one end of the first sleeve 41 away from the opening of the filter tank 31 is bent toward the axis of the cylinder 10 and stopped at the outer side of the filter screen 30 .
  • the filter 30 can be stopped to prevent the filter 30 from being separated from the fixing seat 40 , thereby further improving the firmness of the installation of the filter 30 .
  • the filter screen 30 includes a main body 32 and a connecting portion 33 connected to each other, the main body 32 is arranged in the oil return pipe 20, and one end of the main body 32 close to the opening of the filter tank 31 is folded outward to form the connecting portion 33.
  • the connecting portion 33 is arranged outside the oil return pipe 20, and the connecting portion 33 is clamped between the outer wall of the oil return pipe 20 and the inner wall of the mounting hole 11, so that the main body 32 can be installed at the connection between the oil return pipe 20 and the cylinder 10 through the connecting portion 33.
  • connection portion 33 the connection portion 33 can be clamped between the outer wall of the oil return pipe 20 and the inner wall of the mounting hole 11 through the interference fit between the outer wall of the oil return pipe 20 and the inner wall of the mounting hole 11, thereby achieving the installation and fixation of the filter 30.
  • the setting of the fixing seat 40 is cancelled, the cost is lower, and the installation of the filter 30 is simpler, which further improves the installation efficiency of the filter 30.
  • connection portion 33 may also be directly connected to the oil return pipe 20 and the cylinder 10 by welding between the oil return pipe 20 and the cylinder 10, thereby reducing the interference operation process or further improving the installation efficiency of the filter 30 on the basis of the interference.
  • the present application also provides an air conditioning system, which includes the oil separator 100 described in any one of the above embodiments.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

一种油分离器(100)及空调系统。油分离器(100)包括筒体(10)、回油管(20)和过滤网(30)，筒体(10)的一端设有安装孔(11)，回油管(20)的一端插置于安装孔(11)并通过安装孔(11)连接于筒体(10)；过滤网(30)一端安装于回油管(20)和筒体(10)的连接处，过滤网(30)的至少部分位于回油管(20)内，且过滤网(30)沿着筒体(10)的轴向朝向远离筒体(10)的方向凸出形成过滤槽(31)，过滤槽(31)的开口朝向靠近筒体(10)的方向。

Description

油分离器及空调系统
相关申请
本申请要求2023年6月21日申请的，申请号为202321608408.8，名称为“油分离器及空调系统”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及油分离技术领域，特别是涉及一种油分离器及空调系统。
背景技术
空调压缩机运行时需要润滑油进行润滑，但由于压缩机排出制冷剂时润滑油会随制冷剂一起排出。润滑油的存在一方面会使空调系统管路的热阻增大，降低传热效果，从而降低空调系统的制冷或制热效率；另一方面如果润滑油不及时返回压缩机，会缩短压缩机使用寿命。
油分离器用于分离润滑油和制冷剂，并将分离出的润滑油通过回油管回流至压缩机。并且，为避免杂质通过回油管进入压缩机导致压缩机损坏，通常会在回油管的入口处设置过滤网。但现有过滤网在长期使用过程中，易导致过滤网发生变形或破损，降低了过滤网的过滤面积，从而影响过滤网的过滤效果。
发明内容
基于此，有必要提供一种油分离器及空调系统。
本申请提供一种油分离器，该油分离器包括筒体、回油管和过滤网，所述筒体的一端设有安装孔，所述回油管的一端插置于所述安装孔并通过所述安装孔连接于所述筒体；所述过滤网一端安装于所述回油管和所述筒体的连接处，所述过滤网的至少部分位于所述回油管内，且所述过滤网沿着所述筒 体的轴向朝向远离所述筒体的方向凸出形成过滤槽，所述过滤槽的开口朝向靠近所述筒体的方向。
在其中一个实施例中，所述油分离器还包括固定座，所述固定座连接于所述回油管插置于所述筒体的一端，所述过滤网连接于所述固定座并通过所述固定座安装于所述回油管。
在其中一个实施例中，所述固定座包括第一套筒和第二套筒，所述第一套筒设于所述第二套筒的外周，所述过滤网靠近所述过滤槽开口的一端夹设于所述第一套筒和所述第二套筒之间，且所述第一套筒和所述第二套筒过盈配合。
在其中一个实施例中，沿着所述筒体的轴向，所述第一套筒远离所述过滤槽开口的一端朝向所述筒体的轴线弯折并止挡于所述过滤网的外侧。
在其中一个实施例中，所述油分离器还包括固定座，所述固定座连接于所述回油管插置于所述筒体的一端，所述过滤网靠近所述过滤槽开口的一端夹设于所述固定座和所述回油管之间。
在其中一个实施例中，所述过滤网包括相互连接的主体部和连接部，所述主体部设于所述回油管内，所述主体部靠近所述过滤槽开口的一端向外翻折形成所述连接部，所述连接部位于所述回油管外，且所述连接部夹紧于所述回油管的外壁和所述安装孔的内壁之间。
在其中一个实施例中，所述回油管的内壁设有第一台阶，所述固定座直接或间接抵接于所述第一台阶；和/或，所述固定座靠近所述筒体内部的端面与所述回油管靠近所述筒体内部的端面齐平设置。
在其中一个实施例中，沿着所述筒体的轴向，且沿着从所述筒体至所述回油管的方向，所述过滤网的内径呈减小的趋势。
在其中一个实施例中，所述筒体远离所述回油管的一端连接有进气管和出气管，所述油分离器还包括连接件，多个所述连接件分别连接于所述进气管远离所述筒体的一端、所述出气管远离所述筒体的一端以及所述回油管远离所述筒体的一端；所述连接件的材质为铜，所述筒体、所述回油管、所述进气管、所述出气管及所述过滤网的材质均为不锈钢。
本申请还提供一种空调系统，该空调系统包括以上任意一个实施例所述的油分离器。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更好地描述和说明这里公开的那些发明的实施例和/或示例，可以参考一幅或多幅附图。用于描述附图的附加细节或示例不应当被认为是对所公开的发明、目前描述的实施例和/或示例以及目前理解的这些发明的最佳模式中的任何一者的范围的限制。
图1为本申请提供的一实施例的油分离器的结构示意图。
图2为本申请提供的一实施例的油分离器的结构示意图。
图3为图2中A处的放大图。
图4为本申请提供的一实施例的油分离器的结构示意图。
图5为图4中B处的放大图。
图6为本申请提供的一实施例的油分离器的结构示意图。
图7为图6中C处的放大图。
图中各符号表示含义如下：
100、油分离器；10、筒体；11、安装孔；111、第二台阶；20、回油管； 21、第一台阶；30、过滤网；31、过滤槽；32、主体部；33、连接部；40、固定座；41、第一套筒；42、第二套筒；43、限位部；50、进气管；60、出气管；70、连接件。
具体实施方式
为使本申请的上述目的、特征和优点能够更加明显易懂，下面结合附图对本申请的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本申请。但是本申请能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本申请内涵的情况下做类似改进，因此本申请不受下面公开的具体实施例的限制。
需要说明的是，当组件被称为“固定于”或“设置于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直接连接到另一个组件或者可能同时存在居中组件。本申请的说明书所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”、“下”可以是第一特征直接和第二特征接触，或第一特征和第二特征间接地通过中间媒介接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可以是第一特征在第二特征正上方或斜上方，或仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下 方或斜下方，或仅表示第一特征水平高度小于第二特征。
除非另有定义，本申请的说明书所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。本申请的说明书所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
空调压缩机运行时需要润滑油进行润滑，但由于压缩机排出制冷剂时润滑油会随制冷剂一起排出。润滑油的存在一方面会使空调系统管路的热阻增大，降低传热效果，从而降低空调系统的制冷或制热效率；另一方面如果润滑油不及时返回压缩机，会缩短压缩机使用寿命。
油分离器用于分离润滑油和制冷剂，并将分离出的润滑油通过回油管回流至压缩机。并且，为避免杂质通过回油管进入压缩机导致压缩机损坏，通常会在回油管的入口处设置过滤网。但现有过滤网在长期使用过程中，易导致过滤网发生变形或破损，降低了过滤网的过滤面积，从而影响过滤网的过滤效果。
请参阅图1，为解决现有过滤网易发生变形或破损的问题，本申请提供一种油分离器100，油分离器100连接于压缩机的出口处，用于分离润滑油和制冷剂，并使得润滑油回流至压缩机。
请参阅图2-图7，油分离器100包括筒体10、回油管20和过滤网30，筒体10的一端设有安装孔11，回油管20的一端插置于安装孔11并通过安装孔11连接于筒体10。过滤网30一端安装于回油管20和筒体10的连接处，过滤网30的至少部分位于回油管20内，且过滤网30沿着筒体10的轴向朝向远离筒体10的方向凸出形成过滤槽31，过滤槽31的开口朝向靠近筒体10的 方向。
本申请通过设置过滤网30，能够过滤润滑油内的杂质，防止杂质通过回油管20进入压缩机内，降低压缩机的使用寿命。并且，本申请中过滤槽31的开口方向为朝向靠近筒体10的方向，也就是说，本申请中润滑油会先通过过滤槽31的开口进入过滤槽31，受过滤网30的结构影响，过滤网30在润滑油的压力作用下不易发生变形，避免过滤网30受到润滑油的挤压导致过滤网30易产生朝向过滤槽31内部凹陷变形的情况发生，从而有效保证了过滤网30的过滤面积，提高了过滤网30的过滤效果。
具体地，安装孔11的内壁设有第二台阶111，第二台阶111能够止挡于回油管20靠近筒体10的一端，以便于对回油管20的插入定位，如此，有利于后续回油管20和筒体10间的焊接，提高了回油管20的安装效率。
进一步地，在一实施例中，筒体10远离回油管20的一端连接有进气管50和出气管60，进气管50连接于压缩机的出口，混合制冷剂通过进气管50进入筒体10内部，并在筒体10内部进行油液分离。分离后的润滑油通过回油管20回到压缩机，而制冷剂通过出气管60流出，以进行后续的热交换。
油分离器100还包括连接件70，多个连接件70分别连接于进气管50远离筒体10的一端、出气管60远离筒体10的一端以及回油管20远离筒体10的一端。并且，连接件70的材质为铜，筒体10、回油管20、进气管50、出气管60及过滤网30的材质均为不锈钢。
由于不锈钢的成本较低，组成油分离器100的多数零部件均通过不锈钢制成能够降低油分离器100的生产成本。并且，由于空调系统内的接管多为铜材质，而铜和不锈钢的焊接特性相差较大，导致油分离器100与空调系统内的接管焊接难度较大。因此，通过设置铜制的连接件70，油分离器100能 够通过连接件70与空调系统内的接管焊接，有利于降低焊接难度，从而提高了油分离器100的安装效率。
在一实施例中，沿着筒体10的轴向，且沿着从筒体10至回油管20的方向，过滤网30的内径呈减小的趋势。
也即，过滤网30的远离过滤槽31开口的一端朝向过滤槽31的轴向收缩并形成半圆形，如此，使得过滤网30与回油管20内壁存在一定的距离，避免回油管20的内壁阻碍润滑油的流动，从而变相增加了过滤网30的过滤面积，提高了过滤网30的过滤效果。
需要说明的是，过滤网30的内径呈减小的趋势包括过滤网30内径先保持不变后减小的方式。
实施例一
在本实施例中，如图2和图3所示，油分离器100还包括固定座40，固定座40连接于回油管20插置于筒体10的一端。过滤网30靠近过滤槽31开口的一端夹设于固定座40和回油管20之间。
如此，过滤网30的安装较为简单，能够提高过滤网30的安装效率。并且，通过设置固定座40，可以方便过滤网30的安装固定，防止过滤网30在使用过程中发生松动导致杂质进入回油管20和压缩机内，从而能够避免对压缩机造成损坏。并且，固定座40呈环状结构，使得固定座40的结构较为简单，能够降低固定座40的制造成本，提高制造效率。
进一步地，在一实施例中，固定座40的外壁与回油管20的内壁过盈配合。
如此，增强了固定座40和回油管20间的连接强度，避免固定座40在使用过程中与回油管20间发生脱离，从而保证了过滤网30的牢固安装。并且， 通过固定座40和回油管20的过盈配合，使得过滤网30能够夹紧于固定座40和回油管20之间，从而进一步实现了过滤网30的牢固安装。
在一实施例中，如图3所示，回油管20的内壁设有第一台阶21，固定座40间接抵接于第一台阶21。
如此，固定座40伸入回油管20内时，第一台阶21能够对固定座40起到止挡作用，便于固定座40的定位，固定座40的安装更为简单。并且，由于过滤网30夹设于固定座40和回油管20之间，固定座40抵接于第一台阶21时固定座40与第一台阶21间存在有过滤网30，因此，在本实施例中，固定座40是间接抵接于第一台阶21的。
具体地，第一台阶21可由回油管20朝向自身轴线方向缩口形成，如此，第一台阶21的结构简单，能够大幅降低回油管20的制造难度。
进一步地，在一实施例中，固定座40靠近筒体10内部的端面与回油管20靠近筒体10内部的端面齐平设置，
需要说明的是，固定座40靠近筒体10内部的端面即为固定座40靠近出气管60的端面，回油管20靠近筒体10内部的端面即为回油管20靠近出气管60的端面。
如此，能够避免固定座40对油的流动造成阻碍，提高油的回收率。并且，固定座40与回油管20间具有较大的接触面积，从而进一步增强了固定座40与回油管20的连接强度。
当然，在其他实施例中，固定座40靠近出气管60的端面也可高于或低于回油管20靠近出气管60的端面，在此不过多限定。
进一步地，在一实施例中，固定座40、过滤网30和回油管20的材质相同，且固定座40、过滤网30和回油管20之间通过氩弧焊或激光焊焊接。
也即，固定座40的材质也为不锈钢，由于不锈钢的硬度更高，不易发生变形，且价格较现有的铜制材料更低，能够大幅降低物料成本。且由于固定座40、过滤网30和回油管20的材质相同，当通过氩弧焊或激光焊焊接时，固定座40、过滤网30和回油管20间能够发生自融并连接为一体，降低了固定座40、过滤网30和回油管20的焊接难度，且无需设置焊料，能够节约焊料的成本。并且，利用焊接进一步增加了固定座40、过滤网30和回油管20间的连接强度，提高了固定座40和过滤网30的安装牢固程度。
当然，在其他实施方式中，即使固定座40、过滤网30、回油管20的材质不同，也可以通过焊接增强连接强度。
实施例二
本实施例的结构与实施例一的结构基本相同，相同之处不再赘述，不同之处在于：
在本实施例中，如图4和图5所示，过滤网30连接于固定座40并通过固定座40安装于回油管20。
如此，可先进行过滤网30与固定座40的装配，过滤网30的安装更为简单，能够提高过滤网30的安装效率。
进一步地，在一实施例中，固定座40包括第一套筒41和第二套筒42，第一套筒41设于第二套筒42的外周，且第一套筒41的外圈固定连接回油管20的内壁。过滤网30靠近过滤槽31开口的一端夹设于第一套筒41和第二套筒42之间，且第一套筒41和第二套筒42过盈配合。
如此，固定座40的结构简单，无需与其他的结构配合，便能够实现过滤网30的固定，有效降低了过滤网30的安装难度。
具体地，固定座40还包括限位部43，限位部43分别连接第一套筒41靠 近过滤槽31开口的一端和第二套筒42靠近过滤槽31开口的一端。限位部43能够止挡于过滤网30，避免过滤网30凸出固定座40的端部而造成过滤网30的损坏。且限位部43对过滤网30起到定位作用，使得过滤网30的安装更加简单，降低了过滤网30的装配难度。
进一步地，在一实施例中，固定座40靠近过滤槽31开口的一端止挡于第二台阶111，且固定座40远离过滤槽31开口的一端直接抵接于第一台阶21。如此，第一台阶21和第二台阶111分别止挡于固定座40的两端，从而限制固定座40沿自身轴向的运动，固定座40的安装更为稳定，从而保证了过滤网30的使用可靠性。
在本实施例中，由于过滤网30是直接安装于固定座40，固定座40与第一台阶21间没有过滤网30的分隔，故固定座40可直接抵接于第一台阶21。
当然，在其他实施例中，固定座40靠近过滤槽31开口的一端也可以不止挡于第二台阶111或与回油管20靠近出气管60的端面相齐平。
在一实施例中，第一套筒41远离过滤槽31开口的一端朝向筒体10轴线弯折并止挡于过滤网30的外侧。
如此，通过将第一套筒41部分折弯，能够对过滤网30起到止挡作用，以免过滤网30脱离固定座40，从而进一步提高过滤网30安装的牢固程度。
实施例三
在本实施例中，如图6和图7所示，过滤网30包括相互连接的主体部32和连接部33，主体部32设于回油管20内，主体部32靠近过滤槽31开口的一端向外翻折形成连接部33。连接部33设于回油管20外，且连接部33夹紧于回油管20的外壁和安装孔11的内壁之间，以使主体部32能够通过连接部33安装于回油管20和筒体10的连接处。
也即，主体部32通过向外180°翻折形成连接部33，并且，通过回油管20外壁和安装孔11内壁间的过盈配合，使得连接部33能够夹紧于回油管20的外壁和安装孔11的内壁之间，从而实现过滤网30的安装固定。如此，取消了固定座40的设置，成本更低，且过滤网30的安装更为简单，进一步提高了过滤网30的安装效率。
当然，在其他实施例中，连接部33也可通过回油管20和筒体10间的焊接直接连接于回油管20和筒体10，减少过盈的操作工序或在过盈的基础上，进一步提高过滤网30的安装效率。
本申请还提供一种空调系统，该空调系统包括以上任意一个实施例所述的油分离器100。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请的专利保护范围应以所附权利要求为准。

Claims (10)

  1. 一种油分离器，其特征在于，包括筒体、回油管和过滤网，所述筒体的一端设有安装孔，所述回油管的一端插置于所述安装孔并通过所述安装孔连接于所述筒体；
    所述过滤网一端安装于所述回油管和所述筒体的连接处，所述过滤网的至少部分位于所述回油管内，且所述过滤网沿着所述筒体的轴向朝向远离所述筒体的方向凸出形成过滤槽，所述过滤槽的开口朝向靠近所述筒体的方向。
  2. 根据权利要求1所述的油分离器，其中，还包括固定座，所述固定座连接于所述回油管插置于所述筒体的一端，所述过滤网连接于所述固定座并通过所述固定座安装于所述回油管。
  3. 根据权利要求2所述的油分离器，其中，所述固定座包括第一套筒和第二套筒，所述第一套筒设于所述第二套筒的外周，所述过滤网靠近所述过滤槽开口的一端夹设于所述第一套筒和所述第二套筒之间，且所述第一套筒和所述第二套筒过盈配合。
  4. 根据权利要求3所述的油分离器，其中，沿着所述筒体的轴向，所述第一套筒远离所述过滤槽开口的一端朝向所述筒体的轴线弯折并止挡于所述过滤网的外侧。
  5. 根据权利要求1所述的油分离器，其中，还包括固定座，所述固定座连接于所述回油管插置于所述筒体的一端，所述过滤网靠近所述过滤槽开口的一端夹设于所述固定座和所述回油管之间。
  6. 根据权利要求1所述的油分离器，其中，所述过滤网包括相互连接的主体部和连接部，所述主体部设于所述回油管内，所述主体部靠近所述过滤槽开口的一端向外翻折形成所述连接部，所述连接部位于所述回油管外，且所述连接部夹紧于所述回油管的外壁和所述安装孔的内壁之间。
  7. 根据权利要求2-5任一项所述的油分离器，其中，所述回油管的内壁设 有第一台阶，所述固定座直接或间接抵接于所述第一台阶；
    和/或，所述固定座靠近所述筒体内部的端面与所述回油管靠近所述筒体内部的端面齐平设置。
  8. 根据权利要求1-6任一项所述的油分离器，其中，沿着所述筒体的轴向，且沿着从所述筒体至所述回油管的方向，所述过滤网的内径呈减小的趋势。
  9. 根据权利要求1-6任一项所述的油分离器，其中，所述筒体远离所述回油管的一端连接有进气管和出气管，所述油分离器还包括连接件，多个所述连接件分别连接于所述进气管远离所述筒体的一端、所述出气管远离所述筒体的一端以及所述回油管远离所述筒体的一端；
    所述连接件的材质为铜，所述筒体、所述回油管、所述进气管、所述出气管及所述过滤网的材质均为不锈钢。
  10. 一种空调系统，其特征在于，包括如权利要求1-权利要求9中任意一项所述的油分离器。
PCT/CN2024/083467 2023-06-21 2024-03-25 油分离器及空调系统 WO2024260049A1 (zh)

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