WO2018171150A1 - 油分桶、螺杆压缩机及空调机组 - Google Patents

油分桶、螺杆压缩机及空调机组 Download PDF

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WO2018171150A1
WO2018171150A1 PCT/CN2017/103144 CN2017103144W WO2018171150A1 WO 2018171150 A1 WO2018171150 A1 WO 2018171150A1 CN 2017103144 W CN2017103144 W CN 2017103144W WO 2018171150 A1 WO2018171150 A1 WO 2018171150A1
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oil
barrel
chamber
screw compressor
oil drum
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PCT/CN2017/103144
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English (en)
French (fr)
Inventor
许云功
李日华
张天翼
张宝鸽
张贺龙
袁皓
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珠海格力电器股份有限公司
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Publication of WO2018171150A1 publication Critical patent/WO2018171150A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation

Definitions

  • the invention relates to the field of air conditioning equipment, in particular to an oil drum, a screw compressor and an air conditioning unit.
  • the built-in oil and gas separation of the screw compressor adopts the separation structure of the oil filter.
  • the structure we use is shown in Figure 1.
  • the compressor is vented to the sealed chamber 3' formed by the oil filter 1' and the oil drum, and then discharged through the oil filter 1'.
  • the efficiency of oil and gas separation is related to the following factors.
  • the flow rate through the oil filter 1' usually the lower the flow rate, the higher the oil efficiency;
  • the second is the stroke of the air flow, the longer the stroke, the better the effect of oil and gas separation due to gravity;
  • the third is the impact with the inner wall of the air passage The larger the inner wall area of the airflow contact, the more the impact, the better the oil and gas separation effect.
  • the scheme adopted by the compressor has the following disadvantages: First, the sealing cavity is small, the effect of gravity separation and internal wall impact separation is not good; after the analysis of the flow field, it is found that the airflow tends to pass through the oil filter 1'. Concentration at the inner wall of the circumference of the oil drum, concentration will cause a large flow rate of this part of the air flow, and the consequence of the large flow rate is that the effect of the oil filter 1' is poor.
  • the present invention aims to provide an oil drum, a screw compressor and an air conditioning unit capable of improving the separation effect of oil and gas.
  • the present invention provides an oil sub-barrel comprising: a tub having a receiving chamber; an oil sub-assembly, the oil sub-assembly is disposed in the receiving chamber, and partitioning the receiving chamber into the first chamber and the second chamber, first The volume of the chamber is less than or equal to the volume of the second chamber, the oil subassembly includes an oil screen and a return barrel, the opening of the recirculation barrel facing the second chamber.
  • the oil barrel further includes an exhaust port corresponding to the first chamber disposed on the barrel wall of the tub and communicating with the first chamber.
  • the exhaust port is disposed on a side away from the recirculation tub.
  • the oil drum further includes an injection pipe disposed in the second chamber, and the injection port of the injection pipe faces the opening of the return bucket.
  • the area of the opening of the reflow bucket is 2 to 4 times the area of the injection port of the injection pipe.
  • the return bucket is fixedly disposed on the inner wall of the barrel, the oil filter screen is sleeved outside the return bucket, and covers the cross section of the barrel, and the oil filter screen is provided with a through hole.
  • the first chamber is located on a side of the barrel near the bottom.
  • a screw compressor including an oil sub-tank which is the above-described oil sub-bucket.
  • the barrel of the oil barrel is fixedly connected to the casing of the screw compressor, and the injection tube of the oil barrel is connected to the air outlet of the screw compressor.
  • an air conditioning unit that includes the screw compressor unit described above.
  • the oil filter screen and the return barrel are arranged in the barrel body, and the flow direction is changed by the reflux barrel to reduce the concentration of the air flow, and at the same time, the air flow and the wall surface impact oil and gravity oil are increased.
  • the effect is to comprehensively improve the oil efficiency of the compressor.
  • FIG. 1 is a schematic structural view of a prior art oil drum
  • Figure 2 is a schematic perspective view of a screw compressor according to the present invention.
  • Figure 3 is a cross-sectional structural view of a screw compressor according to the present invention.
  • Figure 4 is a perspective view showing the structure of a barrel and a return barrel of a screw compressor according to the present invention
  • Figure 5 is a front elevational view showing the structure of the barrel and the return barrel of the screw compressor according to the present invention.
  • Figure 6 is a perspective cross-sectional structural view of a barrel and a return barrel of a screw compressor according to the present invention.
  • the oil sub-tank includes a tub 10 and an oil sub-assembly, the tub 10 has a receiving chamber; the oil sub-assembly is disposed in the receiving chamber, and partitions the receiving chamber into the first chamber 11 and
  • the second chamber 12 has a volume of the first chamber 11 that is less than or equal to the volume of the second chamber 12, and the oil component includes an oil screen 21 and a return barrel 22, and the opening 221 of the return barrel 22 faces the second chamber 12.
  • the opening 221 of the reflux barrel 22 faces the second chamber 12, so that the air flow can be reduced in the second chamber 12, sufficiently with the inner wall of the barrel 10 and the second
  • the objects in the chamber 12 are in contact with each other to improve the efficiency of oil and gas separation, solve the problem of low oil efficiency in the prior art, and avoid concentration of airflow in the barrel wall.
  • the return bucket 22 is fixedly disposed on the inner wall of the tub body 10.
  • the oil filter screen 21 is sleeved outside the return bucket 22 and covers the cross section of the tub body 10.
  • the oil filter screen 21 is provided with Through hole.
  • the first chamber 11 is located on the side of the tub 10 near the bottom.
  • the oil sub-barrel further includes an exhaust port 31 disposed on the barrel wall of the tub 10 corresponding to the first chamber 11 and communicating with the first chamber 11.
  • the arrangement of the exhaust port 31 corresponding to the first chamber 11 ensures that the air flow must pass through the oil screen 21 before the oil barrel is discharged, thereby ensuring the oil separation effect.
  • the exhaust port 31 may also be disposed at the bottom of the tub 10 or the like.
  • the exhaust port 31 is disposed on a side away from the return tub 22 in the cross-sectional direction of the tub 10. This allows the gas to flow longer and the separation better.
  • the barrel 10 has a circular cross-sectional shape, the exhaust port 31 is located at one end of the circular diameter, and the recirculation barrel 22 is disposed at the other end of the circular diameter, but the exhaust port 31 and the return bucket 22 is not in the same cross section.
  • the oil drum further includes an injection pipe 40 disposed in the second chamber 12, and the injection port 41 of the injection pipe 40 faces the opening 221 of the return bucket 22.
  • the injection pipe 40 is used to introduce the airflow ejected by the compressor into the recirculation barrel 22, and the injection port 41 of the injection pipe 40 faces the recirculation barrel 22, so that the airflow can enter the recirculation barrel 22 accurately, and is directly injected into the reflow bucket 22 (in this case).
  • the reflux drum 22 is a bottom of a cylindrical shape.
  • the area of the opening 221 of the reflow tub 22 is determined according to the area of the ejection port 41.
  • the area of the opening 221 of the reflow tub 22 is 2 to 4 times the area of the ejection opening 41 of the ejection tube 40. If the area is too large, it will occupy the area of the oil filter 21 and affect the efficiency of the oil. If it is too small, a large pressure loss will be generated there to affect the energy efficiency.
  • a screw compressor including an oil sub-tank which is the above-described oil sub-bucket.
  • the barrel 10 of the oil barrel is fixedly coupled to the housing of the screw compressor, and the injection tube 40 of the oil barrel is connected to the air outlet of the screw compressor.
  • an air conditioning unit that includes the screw compressor unit described above.
  • the distribution of the airflow in the space (the second chamber 12) will be relatively uniform, and the airflow will not be concentrated in the near wall of the oil drum (the flow rate is large when the airflow is concentrated, and the efficiency of the oil filter is low when the flow velocity is large), thus The oil efficiency at the oil filter 21 is improved.
  • the flow of the airflow turns a curve, and thus the stroke of the airflow is longer, which enhances the separation effect of oil and gas generated by gravity. Therefore, the oil efficiency of the compressor can be effectively improved.
  • the oil drum, screw compressor and air conditioning unit according to the present invention have the following technical effects:
  • the large space (second chamber) on the right side of the oil barrel is fully utilized, and the airflow through the oil filter is evenly distributed to reduce the concentration of the airflow, and at the same time, the effect of the airflow and the wall against the oil and gravity oil is increased. To comprehensively improve the oil efficiency of the compressor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

一种油分桶，包括：桶体（10），桶体（10）具有容纳腔；油分组件，油分组件设置在容纳腔内，并将容纳腔分隔为第一腔室（11）和第二腔室（12），第一腔室（11）的容积小于或等于第二腔室（12）的容积，油分组件包括油分滤网（21）和回流桶（22），回流桶（22）的开口（221）朝向第二腔室（12）。还公开了具有该油分桶的螺杆压缩机以及空调机组。该油分桶可提高压缩机的油分效率。

Description

油分桶、螺杆压缩机及空调机组 技术领域
本发明涉及空气调节设备领域，具体而言，涉及一种油分桶、螺杆压缩机及空调机组。
背景技术
目前螺杆压缩机内置油气分离采用的是油分滤网的分离结构。通常，我们采用的结构如下图1。压缩机排气到油分滤网1’与油分桶形成的密封腔3’，然后经过油分滤网1’进行排出。油气分离效率的高低，跟以下几个因素有关。一是经过油分滤网1’的流速，通常流速越低，油分效率越高；二是气流的行程，行程越长，因重力产生油气分离的效果就越好；三是跟气流通道内壁的撞击，气流接触的内壁面积越大，撞击越多，油气分离效果越好。当前，压缩机采用的方案有以下缺点，一是密封腔小，重力分离和内壁撞击分离的效果并不好；另外进行流场的分析后，发现气流在经过油分滤网1’时，往往会在油分桶的圆周内壁处集中，集中会导致这部分气流的流速很大，流速大的后果就是油分滤网1’的效果差。
发明内容
本发明旨在提供一种能够提高油气分离效果的油分桶、螺杆压缩机及空调机组。
本发明提供了一种油分桶，其包括：桶体，桶体具有容纳腔；油分组件，油分组件设置在容纳腔内，并将容纳腔分隔为第一腔室和第二腔室，第一腔室的容积小于或等于第二腔室的容积，油分组件包括油分滤网和回流桶，回流桶的开口朝向第二腔室。
油分桶还包括排气口，排气口对应于第一腔室设置在桶体的桶壁上，且与第一腔室连通。
进一步地，沿桶体的横截面方向，排气口设置在远离回流桶的一侧。
进一步地，油分桶还包括喷射管，喷射管设置在第二腔室内，且喷射管的喷射口朝向回流桶的开口。
进一步地，回流桶的开口的面积是喷射管的喷射口的面积的2倍到4倍。
进一步地，回流桶固定设置在桶体的内壁上，油分滤网套设在回流桶外，且覆盖桶体的横截面，油分滤网上设置有通孔。
进一步地，第一腔室位于桶体靠近底部的一侧。
根据本发明的另一方面，提供一种螺杆压缩机，螺杆压缩机包括油分桶，油分桶为上述的油分桶。
进一步地，油分桶的桶体固定连接在螺杆压缩机的壳体上，且油分桶的喷射管与螺杆压缩机的出气口连接。
根据本发明的另一方面，提供一种空调机组，其包括上述的螺杆压缩机组。
根据本发明的油分桶、螺杆压缩机及空调机组，通过在桶体内设置油分滤网和回流桶，利用回流桶改变气流方向，减少气流的集中，同时加大了气流跟壁面撞击油分和重力油分的效果，以综合性提高压缩机的油分效率。
附图说明
构成本申请的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是现有技术中的油分桶的结构示意图；
图2根据本发明的螺杆压缩机的立体结构示意图；
图3是根据本发明的螺杆压缩机的剖视结构示意图；
图4是根据本发明的螺杆压缩机的桶体与回流桶的立体结构示意图；
图5是根据本发明的螺杆压缩机的桶体与回流桶的主视结构示意图；
图6是根据本发明的螺杆压缩机的桶体与回流桶的立体剖视结构示意图。
附图标记说明：
10、桶体；11、第一腔室；12、第二腔室；21、油分滤网；22、回流桶；221、开口；31、排气口；40、喷射管；41、喷射口。
具体实施方式
下面将参考附图并结合实施例来详细说明本发明。
如图2所示，根据本发明的实施例，油分桶包括桶体10和油分组件，桶体10具有容纳腔；油分组件设置在容纳腔内，并将容纳腔分隔为第一腔室11和第二腔室12，第一腔室11的容积小于或等于第二腔室12的容积，油分组件包括油分滤网21和回流桶22，回流桶22的开口221朝向第二腔室12。
通过在油分桶的桶体10内设置回流桶22，回流桶22的开口221朝向第二腔室12，使得气流能够在第二腔室12中减少集中，充分与桶体10的内壁以及第二腔室12内的物体接触碰撞，提高油气分离效率，解决现有技术中油分效率不高的问题，避免气流在桶壁的集中。
如图2和图6所示，回流桶22固定设置在桶体10的内壁上，油分滤网21套设在回流桶22外，且覆盖桶体10的横截面，油分滤网21上设置有通孔。
在本实施例中，第一腔室11位于桶体10靠近底部的一侧。
优选地，油分桶还包括排气口31，排气口31对应于第一腔室11设置在桶体10的桶壁上，且与第一腔室11连通。将排气口31对应于第一腔室11设置能够确保在排出油分桶之前气流必须经过油分滤网21，从而保证油分效果。当然，在其他实施例中，排气口31也可以设置在桶体10的桶底等位置。
优选地，沿桶体10的横截面方向，排气口31设置在远离回流桶22的一侧。这样可以使气体流过的行程更长，分离效果更好。在本实施例中，桶体10的横截面形状为圆形，排气口31位于圆形的直径的一端，回流桶22设置在圆形的直径的另一端，但排气口31与回流桶22不处于同一横截面上。
优选地，油分桶还包括喷射管40，喷射管40设置在第二腔室12内，且喷射管40的喷射口41朝向回流桶22的开口221。喷射管40用于将压缩机喷出的气流引入回流桶22中，喷射管40的喷射口41朝向回流桶22，使气流能够准确地进入回流桶22内，直接喷射到回流桶22(在本实施例中，回流桶22为圆筒形)的底部。
回流桶22的开口221的面积根据喷射口41的面积确定，优选地，回流桶22的开口221的面积是喷射管40的喷射口41的面积的2倍到4倍。 该面积如果太大，会占用油分滤网21的面积，影响油分效率效果；如果太小，在该处会产生较大的压力损失影响能效。
根据本发明的另一方面，提供一种螺杆压缩机，螺杆压缩机包括油分桶，油分桶为上述的油分桶。通过将油分桶的排气口31的位置设置在桶体10的桶壁上，增加使排气流转向的回流桶22，充分利用油分桶右部的大空间(第二腔室12)来混合均匀气流，减少气流集中，并同时增加气流与壁面撞击的机会和流动的行程，以提高重力油分效果，以提高压缩机的油分效率。
如图2和图3所示，油分桶的桶体10固定连接在螺杆压缩机的壳体上，且油分桶的喷射管40与螺杆压缩机的出气口连接。
根据本发明的另一方面，提供一种空调机组，其包括上述的螺杆压缩机组。
当压缩机压缩后的气流喷射到回流桶22时，由于回流桶22的尾端密封，气流将直接从回流桶22的开口221流出，气流流出后，气流的速度方向已经改变。气流直接撞击在油分桶的第二腔室12的各种零件上，进行撞击分离。由于该空间比较复杂，撞击面积较大，因而在进行撞击油气分离时，油分效果会比在油分滤网21左边空间(第一腔室11)撞击分离效率高。此时的压缩机气流在油分滤网21的右边空间(第二腔室12)流动，由于该空间比较大，并且没有像左边空间(第一腔室11)的内壁那样，对气流有引导作用，所以气流在该空间(第二腔室12)的分布会比较均匀，不会出现气流在油分桶近壁面集中情况(气流集中则流速大，流速大则油分滤网的效率低)，因而在油分滤网21处的油分效率会得到提高。整个气流的流动过程上看，气流从回流桶22的开口221到排气口31的过程中，气流流动转了个弯，因而气流的行程更长了，这加强了由重力产生的油气分离效果，因此能够有效提高压缩机的油分效率的。
根据本发明的油分桶、螺杆压缩机以及空调机组具有如下技术效果：
通过油分桶结构的调整，充分利用油分桶右部的大空间(第二腔室)，均匀通过油分滤网的气流，减少气流的集中，同时加大了气流跟壁面撞击油分和重力油分的效果，以综合性提高压缩机的油分效率。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精 神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种油分桶，其特征在于，包括：
    桶体(10)，所述桶体(10)具有容纳腔；
    油分组件，所述油分组件设置在所述容纳腔内，并将所述容纳腔分隔为第一腔室(11)和第二腔室(12)，所述第一腔室(11)的容积小于或等于所述第二腔室(12)的容积，所述油分组件包括油分滤网(21)和回流桶(22)，所述回流桶(22)的开口(221)朝向所述第二腔室(12)。
  2. 根据权利要求1所述的油分桶，其特征在于，所述油分桶还包括排气口(31)，所述排气口(31)对应于所述第一腔室(11)设置在所述桶体(10)的桶壁上，且与所述第一腔室(11)连通。
  3. 根据权利要求2所述的油分桶，其特征在于，沿所述桶体(10)的横截面方向，所述排气口(31)设置在远离所述回流桶(22)的一侧。
  4. 根据权利要求1所述的油分桶，其特征在于，所述油分桶还包括喷射管(40)，所述喷射管(40)设置在所述第二腔室(12)内，且所述喷射管(40)的喷射口(41)朝向所述回流桶(22)的开口(221)。
  5. 根据权利要求4所述的油分桶，其特征在于，所述回流桶(22)的开口(221)的面积是所述喷射管(40)的喷射口(41)的面积的2倍到4倍。
  6. 根据权利要求1所述的油分桶，其特征在于，所述回流桶(22)固定设置在所述桶体(10)的内壁上，所述油分滤网(21)套设在所述回流桶(22)外，且覆盖所述桶体(10)的横截面，所述油分滤网(21)上设置有通孔。
  7. 根据权利要求1所述的油分桶，其特征在于，所述第一腔室(11)位于所述桶体(10)靠近底部的一侧。
  8. 一种螺杆压缩机，其特征在于，所述螺杆压缩机包括油分桶，所述油分桶为权利要求1至7中任一项所述的油分桶。
  9. 根据权利要求8所述的螺杆压缩机，其特征在于，所述油分桶的桶体(10)固定连接在所述螺杆压缩机的壳体上，且所述油分桶的喷射管(40)与所述螺杆压缩机的出气口连接。
  10. 一种空调机组，其特征在于，包括权利要求8或9所述的螺杆 压缩机组。
PCT/CN2017/103144 2017-03-23 2017-09-25 油分桶、螺杆压缩机及空调机组 WO2018171150A1 (zh)

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