WO2019029264A1 - 具有补气结构的转子压缩机及压缩方法 - Google Patents

具有补气结构的转子压缩机及压缩方法 Download PDF

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Publication number
WO2019029264A1
WO2019029264A1 PCT/CN2018/091134 CN2018091134W WO2019029264A1 WO 2019029264 A1 WO2019029264 A1 WO 2019029264A1 CN 2018091134 W CN2018091134 W CN 2018091134W WO 2019029264 A1 WO2019029264 A1 WO 2019029264A1
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Prior art keywords
air supply
rotor
sliding piece
port
supply passage
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PCT/CN2018/091134
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English (en)
French (fr)
Inventor
潘俊
郑波
梁祥飞
黄柏良
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格力电器（武汉）有限公司
珠海格力电器股份有限公司
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Publication of WO2019029264A1 publication Critical patent/WO2019029264A1/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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • 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
    • F04C2250/00—Geometry
    • F04C2250/10—Geometry of the inlet or outlet

Definitions

  • the present application relates to the field of compressor technology, and in particular to a rotor compressor and a compression method having an air supply structure.
  • the use of the intermediate air-enhanced compressor can effectively improve the heat generation and energy efficiency of the low-temperature air source heat pump.
  • the mature method is to use a two-cylinder double-rotor series and set the air supply channel between the two cylinders. This method is costly, and because of the use of two rotors and cylinders, the friction loss of the cylinder is also increased accordingly.
  • a rolling rotor compressor having an additional air supply structure on a slide has also appeared in the prior art, such as the invention patent of the publication No. CN105673510A, which discloses a rolling rotor compressor which is ventilated by a sliding vane, and has the disadvantage that it is fine.
  • the inside of the thin slide increases the air supply passage and the one-way valve, which not only reduces the strength of the slide, but also because the air-filling aperture space inside the slide is limited and the flow resistance is large, and the back pressure is high when the back air pressure is high. It is difficult to achieve small pressure difference and large flow of air in a short time, which is not conducive to the improvement of compressor capacity and energy efficiency.
  • the utility model patent CN206071871U discloses a single-rotor air-enhanced compressor, and the patent also adds a gas-filling structure inside the sliding piece, which also has the above problems.
  • the present application proposes a rotor compressor having a makeup structure and a compression method.
  • the technical solution adopted in the present application is to design a rotor compressor having an air supply structure, comprising: a cylinder having a working chamber and a sliding chamber, a rotor disposed in the working chamber, and a sliding portion disposed in the sliding chamber.
  • the piece and the spring, one end of the sliding piece abuts on the outer peripheral surface of the rotor, and the spring is compressed against the other end of the sliding piece.
  • the inside of the cylinder is further provided with an air supply passage, and two ends of the air supply passage are respectively communicated with the working chamber and the sliding chamber, and the outer wall of the cylinder is provided with a gas supply port communicating with the sliding chamber.
  • the air supply passage is provided with a one-way valve, and the one-way valve allows the fluid in the air supply passage to flow to the working chamber.
  • the outer wall of the cylinder is provided with an air inlet and an air outlet communicating with the working chamber, wherein the moving direction of the sliding piece is a dividing line, and the air inlet and the air outlet are respectively located at two sides of the sliding piece, and the air supply channel is respectively It is located on the same side of the slide as the exhaust port.
  • a cross section of the cylinder is provided with a first rotation angle and a second rotation angle which are perpendicular to the axis of the rotor and pass through the rotor, the slider and the suction port.
  • the suction port is provided with two intersection points on the wall surface of the working cavity, and the intersection point of the two junction points away from the sliding piece in the direction of rotation of the rotor is the suction connection point, and the center of the sliding piece
  • the angle between the connection line of the center and the connection line of the suction connection point and the center of the circle forms a second rotation angle.
  • first rotation angle ⁇ second rotation angle When 0° ⁇ first rotation angle ⁇ second rotation angle, the sliding piece blocks the air supply port and the air supply passage. When the second rotation angle ⁇ the first rotation angle ⁇ 180°, the sliding piece is connected to the air supply port and the air supply port. aisle.
  • the first rotation angle is between 30° and 180°.
  • the sliding piece is a solid flat plate, and the sliding piece cavity is provided with a transfer section connecting the air supply port and the air supply passage.
  • the air supply port and the air supply channel are blocked, and when the sliding piece is removed from the transfer section, the air supply port and the air supply channel are turned on.
  • the air inlet may be located at a position where the sliding chamber extends linearly along the moving direction of the sliding piece, or the air supply port and the supplementary air passage are located on the same side of the sliding piece.
  • the air supply port and the air supply channel are respectively located at two sides of the sliding film cavity, and the sliding piece is provided with a through hole that can respectively abut the air supply port and the air supply channel.
  • the through hole is respectively connected with the air supply port and the air supply channel, the air supply port and the air supply channel are turned on, and when the through hole is staggered from the air supply port or the air supply channel, the sliding piece blocks the air supply port and the air supply channel.
  • the application also provides a compression method for the above rotor compressor, comprising:
  • the first rotation angle is 0°.
  • the sliding piece is located at the innermost side of the sliding cavity, and the communication between the air supply port and the air supply passage is blocked.
  • the gas in the working chamber is all from the suction port, and the rotor is made up of the sliding piece.
  • the second rotation angle ⁇ the first rotation angle ⁇ 180° at which time the slide plate is connected to the air supply port and the air supply passage, and enters from the air supply port.
  • the medium pressure gas flows through the gas supply passage to the working chamber, and the rotor compressor compresses while filling the air;
  • the pressure of the exhaust chamber where the exhaust port is located in the working chamber gradually increases.
  • the check valve is reversely closed, and the exhaust chamber is closed.
  • the high pressure gas does not flow to the supplemental passage, and the rotor continues to rotate to further compress the gas to complete a compression cycle.
  • the air supply passage is opened on the cylinder, and the size of the air supply aperture is not limited by the sliding piece, and has the advantages of small air supply resistance, high efficiency and reliability;
  • the air supply passage and the suction air inlet are respectively located on both sides of the sliding chamber, and the sliding piece is used as the switching switch, which can effectively avoid the backflow of the supplementary air to the suction chamber and increase the inhalation amount of the suction port.
  • Figure 1 is a cross-sectional view showing a compressor of an embodiment of the present application
  • Figure 2 is a schematic cross-sectional view of the compressor in the initial compression stage of the present application
  • Figure 3 is a cross-sectional view showing the compressor in the continuous air compression stage of the present application.
  • Figure 4 is a cross-sectional view showing the compressor in the cut-off gas compression stage of the present application
  • Figure 5 is a cross-sectional view of a compressor of another embodiment of the present application.
  • the present application proposes a rotor compressor having an air supply structure, including: a cylinder 1, a rotor 2, a sliding plate 3, a spring 4, and the like.
  • the inside of the cylinder 1 is provided with a working chamber 11 and sliding.
  • the cavity 12 and the rotor 2 are disposed in the working cavity 11 and are rotated in the working cavity 11 by the eccentric wheel.
  • the slider chamber 12 is in communication with the working chamber 11, and the slider 3 and the spring 4 are both disposed in the slider chamber 12.
  • the slider chamber 12 can accommodate the slider 3 to reciprocate along its straight line, and one end of the slider 3 is from the slider chamber 12
  • the working chamber 11 is abutted against the outer peripheral surface of the rotor 2, and the spring 4 is compressed and abutted between the other end of the slider 3 and the slider chamber 12.
  • the inside of the cylinder 1 is further provided with an air supply passage 13 .
  • the two ends of the air supply passage 13 are respectively communicated with the working chamber 11 and the sliding chamber 12 , and the check valve 13 is provided with a check valve 5 , and the check valve 5 is only allowed to make up
  • the fluid in the gas passage 13 flows to the working chamber 11 to prevent the high pressure gas in the working chamber 11 from flowing back to the supplemental passage 13 during the compression phase.
  • An air inlet 14 is provided on the outer wall of the cylinder 1, and the air inlet 14 is connected to the slider chamber 12.
  • the slider 3 can open or block the air inlet 14 and the air supply passage 13 when reciprocating in the slider chamber 12.
  • the air supply passage 13 is opened on the cylinder 1, and the size of the air supply aperture is not limited by the slider 3, thereby improving the air supply efficiency.
  • the outer wall of the cylinder 1 is further provided with an air inlet port 15 and an exhaust port 16 communicating with the working chamber 11, with the moving direction of the sliding plate 3 as a boundary line, and the air inlet port 15 and the air outlet port 16 are respectively located on the sliding plate 3
  • the two ends of the air supply passage 13 are respectively an inner communication end communicating with the working chamber 11 and an outer communication end communicating with the air supply port 14, the inner communication end is located on the wall surface of the working chamber 11, and the outer communication end is located in the sliding chamber
  • the inner communication end and the exhaust port 16 are located on the same side of the sliding plate 3, and under the separation action of the sliding piece 3, the backflow of the supplemental air can be effectively prevented from flowing back to the suction chamber, and the inspiratory volume of the suction chamber is increased.
  • a first rotation angle ⁇ and a second rotation angle ⁇ are formed in a cross section of the cylinder 1, the cross section being perpendicular to the axis of the rotor 2, and This cross section passes through the rotor 2, the slider 3 and the suction port 15.
  • the angle between the center line of the slider 3 and the center line and the angle between the tangent point of the rotor 2 on the working chamber 11 and the center line of the center form a first rotation.
  • Angle ⁇ The air inlet 15 is provided with two intersections on the wall surface of the working chamber 11. The intersections of the two junctions in the direction of rotation of the rotor 2 away from the slider 3 are suction connection points, and the two junctions are sucked.
  • the angle between the connection point of the gas communication point and the center of the circle and the connection line between the center of the slider 3 and the center of the circle is large, and the angle forms a second rotation angle ⁇ .
  • the slider 3 blocks the air inlet port 14 and the air supply passage 13 , and when the second rotation angle ⁇ ⁇ the first rotation angle ⁇ ⁇ 180°, the sliding piece 3 Turn on the air supply port 14 and the air supply passage 13.
  • the preferred angle of the first rotation angle ⁇ is between 30° and 180°.
  • the slider 3 and the air inlet 14 are designed in various ways.
  • the slider chamber 12 is vertically disposed above the working chamber 11, the bottom end of the slider 3 abuts against the rotor 2, and the spring 4 is compressed against the top end of the slider 3.
  • the suction port 15 is located on the left side of the slider 3, and the air supply passage 13 and the exhaust port 16 are located on the right side of the slider 3.
  • the air inlet 14 is located at a linear extension of the slider chamber 12, and the slider 3 is a solid flat plate.
  • the slider chamber 12 is provided with a transition portion connecting the air inlet 14 and the air supply passage 13. When the sliding piece 3 is located in the transfer section, the sliding piece 3 blocks between the air supply port 14 and the air supply passage 13, and cuts off the air supply port 14 and the air supply passage 13. When the sliding piece 3 is removed from the transfer section, the transfer section Hollow, gas enters the supplemental gas passage 13 from the air inlet port 14 through the vane chamber 12.
  • the on-off position of the air supply passage 13 and the sliding plate 3 can be rationally designed through the reasonable optimization of the sliding chamber 12, and the supplementary air passage 13 can select an appropriate aperture according to the demand to reduce the air supply resistance and the air supply time.
  • the air inlet 14 can also be disposed on the same side of the sliding plate 3 as the air supply passage 13 , and the air inlet 14 is located at a position where the sliding chamber 12 extends linearly along the moving direction of the sliding plate 3 or is located at the sliding plate 3 with the supplementary air passage 13 . On the same side, it can meet the needs of higher qi and medium pressure and qi time.
  • the air supply port 14 and the air supply passage 13 are respectively located at two sides of the sliding chamber 12, and the sliding plate 3 is provided with a through hole 31, and the through hole 31 can be moved along with the sliding plate 3.
  • the two ends are respectively connected to the air supply port 14 and the air supply channel 13 respectively.
  • the through hole 31 can be designed as a straight hole perpendicular to the moving direction of the sliding piece 3 or an inclined hole which is at an angle with the moving direction of the sliding piece according to actual needs.
  • the gas supply port 14 and the air supply channel 13 When moving to the air supply port 14 and the air supply channel 13 respectively, the gas supply port 14 and the air supply channel 13 are turned on, and when the through hole 31 is offset from the air supply port 14 or the air supply channel 13, the sliding plate 3 is blocked at the air supply port 14 Between the air supply passage 13, the air supply port 14 and the air supply passage 13 are cut off.
  • the through hole 31 is used to open or close the air supply port 14 and the air supply passage 13 on both sides of the slider 3, which is advantageous in that the pressure of the air supply port 14 and the internal pressure of the slider chamber 12 can be separated, and the slider 3 is subjected to The qi pressure can cancel each other on both sides.
  • the present application also proposes a compression method for the above-described rotor compressor, which will be described in detail below with reference to the accompanying drawings.
  • the operation process of the compressor can be divided into three stages.
  • the innermost side of the slider chamber 12, at this time, the slider 3 blocks the communication between the air supply port 14 and the air supply passage 13, and the gaseous refrigerant entering from the air supply port 14 cannot enter the working chamber 11 from the air supply passage 13, and the gas in the working chamber 11 All come from the suction port 15.
  • the second stage the continuous air compression stage, as shown in FIG. 3, as the rotor 2 is further rotated, the slider 3 is further slid toward the working chamber 11.
  • the slider 3 is turned on the air supply port 14 and the air supply passage 13, and the air supply port 14 comes in.
  • the intermediate pressure gas flows along the air supply passage 13 and the check valve 5 to the working chamber 11, and the compressor compresses while plenuming.
  • the third stage the cut-off gas compression stage, as shown in FIG. 4, as the rotor 2 rotates further, the pressure in the exhaust chamber where the exhaust port 16 is located in the working chamber 11 gradually increases, and when the pressure in the exhaust chamber is greater than the qi When the pressure is applied, the check valve 5 is reversely closed, and the high-pressure gas in the exhaust chamber does not flow to the supplemental gas passage 13, and then the gas in the chamber is further compressed to complete a compression cycle.

Abstract

一种具有补气结构的转子压缩机和该转子压缩机的压缩方法，压缩机包括：内部设有工作腔(11)和滑片腔(12)的气缸(1)、设于工作腔(11)内的转子(2)、设于滑片腔(12)内的滑片(3)和弹簧(4)，滑片(3)的一端抵接在转子(2)的外周面上，弹簧(4)压缩抵接于滑片(3)的另一端上。气缸(1)的内部还设有补气通道(13)，补气通道(13)的两端分别与工作腔(11)和滑片腔(12)连通，气缸(1)的外壁上设有与滑片腔(12)连通的补气口(14)，滑片(3)在滑片腔(12)内往复运动时，接通或阻断补气口(14)与补气通道(13)。该转子压缩机具有补气阻力小、效率高、可靠性好等优点。

Description

具有补气结构的转子压缩机及压缩方法
相关申请
本申请要求2017年08月07日申请的，申请号为201710667400.1，名称为“一种具有补气结构的转子压缩机及压缩方法”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
本申请涉及压缩机技术领域，尤其涉及一种具有补气结构的转子压缩机及压缩方法。
背景技术
使用中间补气增焓压缩机能够有效提高低温空气源热泵的制热量与能效，对于滚动转子压缩机而言，成熟的做法是使用双缸双转子串联，并在两个气缸中间设置补气通道，这种做法成本较高，并且由于使用了两个转子及气缸，也相应增大了气缸的摩擦损失。
单缸单转子补气技术由于结构简单、成本低廉，近年来也逐渐受到重视，贾庆磊等人在《制冷学报》上发表了一篇名为“带中间补气的滚动转子式压缩系统制热性能的实验研究”，具体研究了一种气缸壁面开设补气口的单转子补气压缩机，这种压缩机缺陷在于补气与吸气会贯通，导致压缩机效率降低。
现有技术中还出现了在滑片上增加补气结构的滚动转子压缩机，例如公开号为CN105673510A的发明专利，其公开了一种通过滑片补气的滚动转子压缩机，其缺点是在细薄滑片的内部增加补气通道及单向阀，这不仅会降低滑片的强度，同时由于滑片内部的补气孔径空间受限、流阻较大，在补气背压较高时很难在短时间内实现小压差大流量补气，不利于压缩机能力与能效的提高。再例如公开号为CN206071871U的实用新型专利，其公开了一种单转子补气增焓压缩机，该专利也是在滑片内部增加补气结构，同样存在上述问题。
因此，如何设计一种具有补气结构、补气阻力小、效率高、可靠性好的转子压缩机及压缩方法是业界亟待解决的技术问题。
发明内容
为了解决现有技术中存在的上述缺陷，本申请提出一种具有补气结构的转子压缩机及 压缩方法。
本申请采用的技术方案是，设计一种具有补气结构的转子压缩机，包括：内部设有工作腔和滑片腔的气缸、设于工作腔内的转子、设于滑片腔内的滑片和弹簧，滑片的一端抵接在转子的外周面上，弹簧压缩抵接于滑片的另一端上。气缸的内部还设有补气通道，补气通道的两端分别与工作腔和滑片腔连通，气缸的外壁上设有与滑片腔连通的补气口。滑片在滑片腔内往复运动时，接通或阻断补气口与补气通道。
优选的，补气通道内设有单向阀，单向阀允许补气通道内的流体流向工作腔。
优选的，气缸的外壁上设有与工作腔连通的吸气口和排气口，以滑片的运动方向为分界线，吸气口和排气口分别位于滑片的两侧，补气通道与排气口位于滑片的同一侧。
优选的，气缸的一横截面内设有第一旋转角和第二旋转角，该横截面垂直于转子的轴线且穿过转子、滑片及吸气口。
以转子的旋转中心为圆心，滑片的中心和圆心的连接线与转子在工作腔上的切点和圆心的连接线之间的夹角形成第一旋转角。在该横截面内，吸气口上设有两个位于工作腔的壁面上的交接点，该两个交接点中沿转子旋转方向远离滑片的交接点为吸气连通点，滑片的中心和圆心的连接线与吸气连通点和圆心的连接线之间的夹角形成第二旋转角。
当0°≤第一旋转角＜第二旋转角时，滑片阻断补气口与补气通道，当第二旋转角≤第一旋转角≤180°时，滑片接通补气口与补气通道。
优选的，滑片接通所述补气口与补气通道时，第一旋转角位于30°至180°之间。
在一实施例中，滑片为一实心平板，滑片腔内设有连通补气口与补气通道的转接段。滑片位于转接段内时，阻断补气口与补气通道，滑片从转接段移开时，接通补气口与补气通道。补气口可位于滑片腔沿滑片运动方向直线延伸的位置上，或者补气口和补气通道位于滑片的同一侧。
在另一实施例中，补气口和补气通道分别位于滑片腔的两侧，滑片内设有可分别与补气口和补气通道对接的通孔。通孔分别与补气口和补气通道对接时，接通补气口与补气通道，通孔与所述补气口或补气通道错开时，滑片阻断补气口与补气通道。
本申请还提供了一种上述转子压缩机的压缩方法，包括：
第一阶段，第一旋转角为0°，此时滑片位于滑片腔的最内侧，阻断补气口与补气通道的连通，工作腔内气体全都来自吸气口，当转子由滑片向吸气口旋转时，第一旋转角＜第二旋转角，滑片所处位置始终阻断补气口与补气通道；
第二阶段，随着转子进一步旋转，当转子刚转过吸气口时，第二旋转角＜第一旋转角＜180°，此时滑片接通补气口与补气通道，从补气口进入的中压气体经过补气通道流向 工作腔，转子压缩机一边补气一边压缩；
第三阶段，随着转子再进一步旋转，工作腔中排气口所在的排气腔压力逐渐升高，当排气腔内压力大于补气压力时，单向阀反向截止，排气腔内的高压气体不会流向补气通道，转子继续转动进一步压缩气体，完成一个压缩周期。
与现有技术相比，本申请具备以下优点：
1、补气通道开设在气缸上，补气孔径的大小不受滑片限制，具有补气阻力小、效率高及可靠性等优点；
2、补气通道和吸气口分别位于滑片腔的两侧，利用滑片充当切换开关，可有效避免补气回流至吸气腔，增加吸气口的吸气量。
附图说明
下面结合实施例和附图对本申请进行详细说明，其中：
图1是本申请中一实施例的压缩机剖视示意图；
图2是本申请中初始压缩阶段的压缩机剖视示意图；
图3是本申请中连通补气压缩阶段的压缩机剖视示意图；
图4是本申请中截止补气压缩阶段的压缩机剖视示意图；
图5是本申请中另一实施例的压缩机剖视示意图。
具体实施方式
如图1至4所示，本申请了提出一种具有补气结构的转子压缩机，包括：气缸1、转子2、滑片3及弹簧4等，气缸1的内部设有工作腔11和滑片腔12，转子2设于工作腔11内，由偏心轮的带动下在工作腔11内旋转运动。滑片腔12与工作腔11连通，滑片3和弹簧4均设置在滑片腔12内，滑片腔12可容纳滑片3沿其直线往复运动，滑片3的一端从滑片腔12伸入工作腔11抵接在转子2的外周面上，弹簧4压缩抵接在滑片3的另一端与滑片腔12之间。
气缸1的内部还设有补气通道13，补气通道13的两端分别与工作腔11和滑片腔12连通，补气通道13内设有单向阀5，单向阀5仅允许补气通道13内的流体流向工作腔11，防止压缩阶段工作腔11内的高压气体返流至补气通道13。气缸1的外壁上设有补气口14，补气口14连通至滑片腔12，滑片3在滑片腔12内往复运动时可接通或阻挡补气口14与补气通道13。补气通道13开设在气缸1上，补气孔径的大小不受滑片3限制，提高补气效率。
气缸1的外壁上还设有与工作腔11连通的吸气口15和排气口16，以滑片3的运动方向为分界线，吸气口15和排气口16分别位于滑片3的两侧，补气通道13的两端分别为与工作腔11连通的内连通端、与补气口14连通的外连通端，内连通端位于工作腔11的壁面上，外连通端位于滑片腔12的壁面上，内连通端与排气口16位于滑片3的同一侧，在滑片3的分隔作用下，可有效防止补气回流至吸气腔，增大吸气腔的吸气量。
如图1所示，转子2和滑片3的运动过程中，在气缸1的一横截面内形成第一旋转角θ和第二旋转角β，该横截面与转子2的轴线相互垂直，且该横截面穿过转子2、滑片3及吸气口15。
在该横截面内，以转子2的旋转中心为圆心，滑片3的中心和圆心的连接线与转子2在工作腔11上的切点和圆心的连接线之间的夹角形成第一旋转角θ。吸气口15上设有两个位于工作腔11的壁面上的交接点，该两个交接点中沿转子2旋转方向远离滑片3的交接点为吸气连通点，两个交接点中吸气连通点与圆心的连接线和滑片3的中心和圆心的连接线之间的夹角较大，该夹角形成第二旋转角β。当0°≤第一旋转角θ＜第二旋转角β时，滑片3阻断补气口14与补气通道13，当第二旋转角β≤第一旋转角θ≤180°时，滑片3接通补气口14与补气通道13。为了使压缩效果更好，滑片3接通补气口14与补气通道13时，第一旋转角θ的优选角度为30°至180°之间。
在实际应用中，滑片3和补气口14的设计方式有多种。
在一实施例中，如图1至4所示，滑片腔12竖直设置工作腔11的上方，滑片3的底端与转子2抵接，弹簧4压缩抵接在滑片3的顶端，吸气口15位于滑片3的左侧，补气通道13和排气口16位于滑片3的右侧。补气口14位于滑片腔12的直线延伸位置，滑片3为一实心平板，滑片腔12内设有连通补气口14与补气通道13的转接段。滑片3位于转接段内时，滑片3阻挡在补气口14与补气通道13之间，截断补气口14与补气通道13，滑片3从转接段移开时，转接段中空，气体从补气口14经过滑片腔12进入补气通道13。
补气通道13与滑片3开关通断位置可以通过对滑片腔12合理的进行优化设计，补气通道13可以根据需求在合理范围选择适当孔径，以减小补气阻力及补气时间。当然，补气口14也可以与补气通道13设置在滑片3的同一侧，补气口14位于滑片腔12沿滑片3运动方向直线延伸的位置上或与补气通道13位于滑片3的同一侧，都可以满足更高补气中压与补气时间的需求。
在另一实施例中，如图5所示，补气口14和补气通道13分别位于滑片腔12的两侧，滑片3内设有通孔31，通孔31可随滑片3移动至两端分别与补气口14和补气通道13对接，通孔31可根据实际需要设计为与滑片3运动方向垂直的直孔或与滑片运动方向呈夹 角的斜孔，当通孔31移动至分别与补气口14和补气通道13对接时，接通补气口14与补气通道13，通孔31与补气口14或补气通道13错开时，滑片3阻挡在补气口14与补气通道13之间，截断补气口14与补气通道13。利用通孔31接通或截断滑片3两侧的补气口14和补气通道13，其优势在于能将补气口14的压力和滑片腔12的内部压力分隔开，且滑片3受到的补气压力能够在两侧相互抵消。
本申请还提出了上述转子压缩机的压缩方法，下面结合附图详细说明。
压缩机的运行过程可以分为三个阶段，第一阶段：初始压缩阶段，如图2所示，转子2与滑片3相切，第一旋转角θ＝0°，此时滑片3位于滑片腔12的最内侧，此时滑片3阻断补气口14与补气通道13的连通，从补气口14进入的气态冷媒无法从补气通道13进入工作腔11，工作腔11内气体全都来自吸气口15。当转子2由滑片3向吸气口15旋转时，即第一旋转角θ＜第二旋转角β时，滑片3所处位置始终能够满足滑片腔12与补气通道13的截止需要。
第二阶段：连通补气压缩阶段，如图3所示，随着转子2进一步旋转，滑片3也进一步向工作腔11滑动。当转子2刚转过吸气口15，即第二旋转角β＜第一旋转角θ＜180°时，此时滑片3接通补气口14和补气通道13，补气口14出进来的中压气体沿着补气通道13、单向阀5流向工作腔11，压缩机一边补气一边压缩。
第三阶段：截止补气压缩阶段，如图4所示，随着转子2进一步旋转，工作腔11中排气口16所在的排气腔压力逐渐升高，当排气腔内压力大于补气压力时，单向阀5反向截止，排气腔内的高压气体不会流向补气通道13，之后腔内气体进一步压缩，完成一个压缩周期。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种具有补气结构的转子压缩机，包括：内部设有工作腔(11)和滑片腔(12)的气缸(1)、设于所述工作腔(11)内的转子(2)、设于所述滑片腔(12)内的滑片(3)和弹簧(4)，所述滑片(3)的一端抵接在所述转子(2)的外周面上，所述弹簧(4)压缩抵接于所述滑片(3)的另一端上；
    其特征在于，所述气缸(1)的内部还设有补气通道(13)，所述补气通道(13)的两端分别与所述工作腔(11)和滑片腔(12)连通，所述气缸(1)的外壁上设有与所述滑片腔(12)连通的补气口(14)；
    所述滑片(2)在所述滑片腔(12)内往复运动时，接通或阻断所述补气口(14)与补气通道(13)。
  2. 如权利要求1所述的具有补气结构的转子压缩机，其特征在于，所述补气通道(13)内设有单向阀(5)，所述单向阀(5)允许所述补气通道(13)内的流体流向所述工作腔(11)。
  3. 如权利要求1所述的转子压缩机，其特征在于，所述气缸(1)的外壁上设有与所述工作腔(11)连通的吸气口(15)和排气口(16)，以所述滑片(3)的运动方向为分界线，所述吸气口(15)和排气口(16)分别位于所述滑片(3)的两侧，所述补气通道(13)与所述排气口(16)位于所述滑片(3)的同一侧。
  4. 如权利要求3所述的具有补气结构的转子压缩机，其特征在于，所述气缸(1)的一横截面内设有第一旋转角和第二旋转角，所述横截面垂直于所述转子(2)的轴线且穿过所述转子(2)、滑片(3)及吸气口(15)；
    以所述转子(2)的旋转中心为圆心，所述滑片(3)的中心和圆心的连接线与所述转子(2)在工作腔(11)上的切点和圆心的连接线之间的夹角形成第一旋转角；
    在所述横截面内，所述吸气口(15)上设有两个位于所述工作腔(11)的壁面上的交接点，该两个交接点中沿转子(2)旋转方向远离所述滑片(3)的交接点为吸气连通点，所述滑片(3)的中心和圆心的连接线与吸气连通点和圆心的连接线之间的夹角形成第二旋转角；
    当0°≤第一旋转角＜第二旋转角时，所述滑片(3)阻断所述补气口(14)与所述补气通道(13)，当第二旋转角≤第一旋转角≤180°时，所述滑片(3)接通所述补气口(14)与所述补气通道(13)。
  5. 如权利要求4所述的具有补气结构的转子压缩机，其特征在于，所述滑片(3)接 通所述补气口(14)与所述补气通道(13)时，所述第一旋转角位于30°至180°之间。
  6. 如权利要求1至5任一项所述的具有补气结构的转子压缩机，其特征在于，所述滑片(3)为一实心平板，所述滑片腔(12)内设有连通所述补气口(14)与补气通道(13)的转接段；
    所述滑片(3)位于所述转接段内时，阻断所述补气口(14)与补气通道(13)，所述滑片(3)从所述转接段移开时，接通所述补气口(14)与补气通道(13)。
  7. 如权利要求6所述的具有补气结构的转子压缩机，其特征在于，所述补气口(14)位于所述滑片腔(12)沿滑片运动方向直线延伸的位置上。
  8. 如权利要求6所述的具有补气结构的转子压缩机，其特征在于，所述补气口(14)和补气通道(13)位于滑片(3)的同一侧。
  9. 如权利要求1至5任一项所述的具有补气结构的转子压缩机，其特征在于，所述补气口(14)和补气通道(13)分别位于所述滑片(3)的两侧，所述滑片(3)内设有可分别与所述补气口(14)和补气通道(13)对接的通孔(31)；
    所述通孔(31)分别与所述补气口(14)和补气通道(13)对接时，接通所述补气口(14)与补气通道(13)，所述通孔(31)与所述补气口(14)或补气通道(13)错开时，所述滑片(3)阻断所述补气口(14)与补气通道(13)。
  10. 一种如权利要求4至9任一项所述的具有补气结构的转子压缩机的压缩方法，其特征在于，包括：
    第一阶段，所述第一旋转角为0°，此时滑片(3)位于滑片腔(12)的最内侧，阻断所述补气口(14)与补气通道(13)的连通，所述工作腔(11)内气体全都来自吸气口(15)，当转子(2)由滑片(3)向吸气口(15)旋转时，所述第一旋转角＜第二旋转角，所述滑片(3)所处位置始终阻断所述补气口(14)与补气通道(13)；
    第二阶段，随着转子(2)进一步旋转，当转子(2)刚转过吸气口(15)时，所述第二旋转角＜第一旋转角＜180°，此时滑片(3)接通所述补气口(14)与补气通道(13)，从补气口(14)进入的中压气体经过补气通道(13)流向所述工作腔(11)，转子压缩机一边补气一边压缩；
    第三阶段，随着转子(2)再进一步旋转，所述工作腔(11)中排气口(16)所在的排气腔压力逐渐升高，当排气腔内压力大于补气压力时，所述单向阀(5)反向截止，排气腔内的高压气体不会流向补气通道(13)，转子(2)继续转动进一步压缩气体，完成一个压缩周期。
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WO2021196607A1 (zh) * 2020-03-31 2021-10-07 珠海格力电器股份有限公司 一种单级增焓转子压缩机及具有其的空调器
US11971038B2 (en) 2020-03-31 2024-04-30 Gree Electric Appliances, Inc. Of Zhuhai Single-stage enthalpy enhancing rotary compressor and air conditioner having same

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