WO2022041486A1 - 涡旋压缩机的定涡旋和涡旋压缩机 - Google Patents

涡旋压缩机的定涡旋和涡旋压缩机 Download PDF

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Publication number
WO2022041486A1
WO2022041486A1 PCT/CN2020/127428 CN2020127428W WO2022041486A1 WO 2022041486 A1 WO2022041486 A1 WO 2022041486A1 CN 2020127428 W CN2020127428 W CN 2020127428W WO 2022041486 A1 WO2022041486 A1 WO 2022041486A1
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Prior art keywords
channel
fixed scroll
cover member
intermediate fluid
branch
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PCT/CN2020/127428
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English (en)
French (fr)
Inventor
刘轩
房元灿
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艾默生环境优化技术(苏州)有限公司
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Priority claimed from CN202021793811.9U external-priority patent/CN212774750U/zh
Priority claimed from CN202010863218.5A external-priority patent/CN114087176A/zh
Application filed by 艾默生环境优化技术(苏州)有限公司 filed Critical 艾默生环境优化技术(苏州)有限公司
Publication of WO2022041486A1 publication Critical patent/WO2022041486A1/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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • 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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids

Definitions

  • the present disclosure relates to the field of compressors, and in particular, to a fixed scroll of a scroll compressor with an improved air jet enthalpy-enhancing fluid channel.
  • a portion of the intermediate pressure gas is injected into the compression chamber through an jet enthalpy (EVI) passage to be mixed with the partially compressed refrigerant for recompression , which increases the circulation volume of the refrigerant and increases the enthalpy difference of the main circulation loop, thereby greatly improving the efficiency of the compressor.
  • EVI jet enthalpy
  • the configuration of the EVI injection channel design structure of the scroll compressor in the prior art is generally to drill holes in the base plate of the fixed scroll to form the injection passage, which is described in conjunction with FIG. 5 , and is processed in the base plate 1 of the fixed scroll.
  • the two transverse holes 2 and 3 are both super-long deep holes, which are difficult to machine, and the risk of tool breakage during machining is high.
  • drills used to process deep holes usually need to be customized.
  • the jet channel of the entire EVI contains various sizes of apertures and threaded holes. The number of tools to be processed is large, the processing procedures are complex, and the processing cost is high.
  • the position that communicates with the exhaust cavity or the suction cavity needs to be closed with a plug (not shown), so that more closing points 7 (up to 5) are required.
  • the leakage risk is high, and the corresponding number of required plugs is large, resulting in an increase in the manufacturing cost of the scroll part.
  • the design of the outlet hole 6 leading to the compression chamber can only be located on the path of the transverse hole, which greatly limits the freedom of the design position of the EVI injection port.
  • the prior art CN1213744A provides an improved scroll compressor that employs a transverse economizer passage defined between the outer end face of the fixed scroll and the mating end face of the overlying cover member. Since the economizer channel is formed on the end face exposed prior to assembly, it is relatively easy to machine complex transverse channels onto the end face. The passage is machined to the end face, and the cover member and fixed scroll are secured together to close the passage, thereby simplifying the machining of the more complex economizer transverse passages.
  • the defects of the prior art are: high risk of fluid leakage in the channel, complex structure, and imprecise installation and positioning.
  • An object of the present disclosure is to provide a fixed scroll of a scroll compressor with an air injection enthalpy increasing channel that is easy to process, simple in process, and has a high degree of freedom in the design of the air injection enthalpy increasing injection port.
  • Another object of the present disclosure is to provide a fixed scroll of a scroll compressor with an air jet enthalpy increasing channel with precise installation positioning, simple structure and effective channel sealing.
  • a fixed scroll of a scroll compressor includes a base plate and a fixed scroll extending from a first end face of the base plate, and the base plate and the fixed scroll are used for In defining a series of compression chambers of the scroll compressor, fluid passages are provided in the fixed scroll, the fluid passages being adapted to deliver jet enthalpy-enhancing fluid from a jet-jet enthalpy-enhancing fluid source to the series At least one of the compression chambers, the base plate has a second end face opposite to the first end face, and the base plate is provided with a predetermined extension line extending along the second end face on the second end face an open channel, and the fixed scroll further includes a cover member extending in an extension line consistent with a predetermined extension line of the open channel and covering the open channel to define An intermediate fluid channel forming part of the fluid channel.
  • the cover member is embedded in the open channel such that the outer surface of the cover member facing away from the open channel is flush with or lower than the second end face.
  • the open channel is a stepped groove
  • the stepped groove includes a bottom groove and an installation and positioning groove
  • a stepped surface is formed between the bottom groove and the mounting and positioning groove
  • the mounting and positioning groove is matched to receive
  • the cover member is supported by the stepped surface and the bottom groove forms the intermediate fluid passage.
  • the fixed scroll further comprises a gasket arranged between the cover member and the open channel.
  • the profile of the gasket is the same as the profile of the cover member, viewed in the axial direction of the fixed scroll.
  • the cover member is provided with a plurality of fastening portions, the plurality of fastening portions are alternately arranged on the first and second opposite sides of the body of the cover member along the extension direction of the cover member. Second side.
  • the plurality of fastening parts are protrusions extending from the first side part or the second side part, respectively, and a fastening hole for the fastener to pass through is provided in the protrusion part, The distance between every two adjacent fastening holes along the extending direction of the cover member is substantially equal.
  • the open channel comprises a first branch open channel and a second branch open channel
  • the first branch open channel and the second branch open channel are respectively used to define the The first branched intermediate fluid channel and the second branched intermediate fluid channel of the intermediate fluid channel
  • the fluid channel further includes an introduction channel for introducing a jet of enthalpy increasing fluid into the intermediate fluid channel and an introduction channel for introducing the enthalpy increasing fluid into the intermediate fluid channel.
  • the jet enthalpy-enhancing fluid of the intermediate fluid passage is discharged to the discharge passage of the at least one compression chamber, and the introduction passage communicates to the intermediate at the junction of the first branch intermediate fluid passage and the second branch intermediate fluid passage A fluid channel, the discharge channel is provided at and communicated to the end of the first branch intermediate fluid channel and the end of the second branch intermediate fluid channel, respectively.
  • the length of the first branch intermediate fluid channel is approximately equal to the length of the second branch intermediate fluid channel, and/or both the first branch intermediate fluid channel and the second branch intermediate fluid channel have A substantially constant flow cross-sectional area and the flow cross-sectional area of the first branch intermediate fluid channel is substantially equal to the flow cross-sectional area of the second branch intermediate fluid channel.
  • the cross-section of the intermediate fluid channel is a regular quadrilateral or a semicircle.
  • the present disclosure also provides a scroll compressor comprising the above-mentioned fixed scroll.
  • a high-pressure space for receiving the compressed high-pressure working fluid is provided on the second end face side of the base plate of the fixed scroll, so that the outer surface of the cover member is exposed to the high-pressure space.
  • the scroll compressor further comprises a variable volume ratio valve and/or a compression mechanism discharge valve disposed at the second end face of the base plate, the open channel to avoid the variable volume
  • a variable volume ratio valve and/or a compression mechanism discharge valve disposed at the second end face of the base plate, the open channel to avoid the variable volume
  • the manner of the ratio valve and/or the exhaust port valve of the compression mechanism extends along the second end face.
  • the scroll compressor further includes a cover plate attached to the second end face of the base plate to define the high pressure space between the base plate and the cover plate.
  • the fixed scroll of the compressor of the present disclosure provides an improved jet enthalpy-enhancing fluid channel, a channel forming an EVI channel is formed on the second end face of the fixed scroll end plate, and a cover member with a consistent shape/contour extension is installed on the channel so that It is convenient to install the positioning cover member and at the same time it is beneficial to the sealing of the channel, to achieve accurate installation positioning and effective channel sealing, and at the same time, the processing is convenient, the process is simple, and the interference of other structural features on the base plate of the fixed scroll can be avoided. Any corresponding jet enthalpy-enhancing fluid injection position point improves the degree of freedom of jet enthalpy-enhancing fluid injection position design.
  • FIG. 1 is a diagram illustrating a portion of a scroll compressor including a jet enthalpy channel configuration according to an embodiment of the present disclosure
  • FIG. 2 is a cross-sectional perspective view illustrating the fixed scroll of FIG. 1 including the air jet enthalpy increasing channel configuration, wherein the open channel and the cover member on the second end face of the base plate of the fixed scroll define the air jet enthalpy increasing channel. ;
  • FIG. 3a is a cross-sectional perspective view showing the fixed scroll of FIG. 2 after the cover member is removed;
  • Figure 3b is an enlarged schematic view showing detail A of Figure 3a;
  • FIG. 4 is a perspective view illustrating a fixed scroll of a compressor according to an aspect of an embodiment of the present disclosure, wherein the open channel on the fixed scroll base plate is a two-branch open channel configuration;
  • FIG. 5 is a cross-sectional perspective view illustrating a fixed scroll of a scroll compressor of the prior art including an air jet enthalpy increasing channel configuration.
  • the compressor and the compression mechanism involved in the present disclosure are the compressor and the compression mechanism with which the jet enthalpy is applied.
  • the compressor may be a scroll compressor to which jet enthalpy enhancement is applied. It can be understood that the compressor can also be other types of compressors with jet enthalpy applied.
  • the fixed scroll 100 of the scroll compressor 10 includes a base plate 110 and a fixed scroll 120 extending from a first end surface 110a of the base plate , the base plate 110 and the fixed scroll 120 are used to define a series of compression cavities of the scroll compressor, and a fluid passage EP is provided in the fixed scroll, and the fluid passage EP is suitable for conveying the jet enthalpy increasing fluid from the jet enthalpy increasing fluid source
  • a fluid passage EP is suitable for conveying the jet enthalpy increasing fluid from the jet enthalpy increasing fluid source
  • the second end face (ie, the outer end face) 110b of the substrate 110 opposite to the first end face 110a is provided with an open type extending along the second end face 110b with a predetermined extension line
  • the channel 130, and the fixed scroll further includes a cover member 140 extending in an extension line consistent with a predetermined extension line of the open channel 130 and covering the open channel 130 to define the fluid channel EP.
  • open channel is interpreted as: the channel is opened on the second end face and is open in the direction away from the second end face when the cover member is not installed, and when the cover member is installed as After covering the channel, the channel together with the cover member defines an intermediate fluid channel.
  • Consistent with the extension line is interpreted as the cover member having the same or substantially the same profile as the open channel when viewed in the axial direction of the fixed scroll. For example, instead of covering substantially the entire second end face, the cover member may be elongated, for example, covering only the open channel or the open channel and the edge of the channel.
  • the jet enthalpy increasing fluid of the jet enthalpy increasing fluid source is delivered to the fluid passage EP of the fixed scroll of the compressor 10 through the connecting pipe 12 installed on the casing 11 of the compressor 10 , especially to the fluid passage EP of the fixed scroll of the compressor 10 In the intermediate fluid channel EP2 defined by the member and the open channel.
  • the formation of the open channel as the air jet enthalpy-enhancing fluid channel is formed on the second end face of the substrate, so that it can be realized by a simple machining method such as milling, and the corresponding machining process is also simple and easy to realize. .
  • the predetermined extension line of the open channel can be a straight line or a curved line (for example, roughly U-shaped), as long as it avoids other structural features on the base plate of the fixed vortex, any corresponding jet enthalpy-enhancing fluid jetting point can be reached, greatly The degree of freedom in the design of the injection position of the jet enthalpy-enhancing fluid has been improved. Also, since the cover member conforming to the shape/profile of the channel can avoid interference with other features provided on the second end face, convenient installation, simpler structure, minimized fluid leakage and effective sealing can be achieved.
  • the cover member 140 is embedded in the open channel 130 such that the outer surface 142 of the cover member 140 facing away from the open channel 130 is lower than the second end surface 110b. It is of course contemplated that the outer surface 142 may be flush with the second end surface 110b. This configuration can further avoid interference with other features, and further facilitate the installation and positioning of the cover member.
  • the open channel 130 is a stepped groove
  • the stepped groove includes a bottom groove 131 and a mounting and positioning groove 132
  • a stepped surface 1321 is formed between the bottom groove 131 and the mounting and positioning groove 132
  • the mounting positioning groove 132 matably receives the cover member 140 and supports the cover member 140 through the stepped surface 1321
  • the bottom groove 131 forms an intermediate fluid passage EP2 .
  • the bottom surface of the installation positioning groove 132 may form a stepped surface 1321
  • the bottom surface 1311 of the bottom groove 131 is provided with an inlet hole 1312 for the inflow of the jet enthalpy increasing fluid and an outlet hole 1313 leading to the compression chamber, the outlet holes are in the form of vertical holes and the number is two, It is conceivable that the number of outlet holes can be set to one or more than two as desired.
  • the fixed scroll 100 also includes an intermediate vertical connection channel 170 in communication with the inlet hole 1312 and a transverse fluid inflow channel 180 in communication with the source of the jet enthalpy increasing fluid.
  • the jet enthalpy-enhancing fluid of the jet-jet enthalpy-enhancing fluid source is delivered to the intermediate fluid channel EP2, and then is supplied into the corresponding compression chamber through the outlet port 1313 through the outlet channel.
  • the fixed scroll 100 further includes a gasket 150 disposed between the cover member 140 and the open channel 130 .
  • the gasket further improves sealing.
  • a gasket may also be provided between the cover member and the side wall of the installation positioning groove.
  • the outline of the gasket 150 is the same as that of the cover member 140 when viewed along the axial direction of the fixed scroll 100 .
  • the cover member 140 is provided with a plurality of fastening portions 144 (see FIG. 2 ), and the plurality of fastening portions 144 are alternately provided on the body of the cover member along the extending direction of the cover member 140 . (shown in the figures in a radial direction) opposing first and second sides.
  • the plurality of fastening portions 144 are protrusions extending from the first side portion or the second side portion, respectively, and a fastening hole for the fastener 160 to pass through is provided in the protrusion, along the length of the cover member. The distance between every two fastening holes adjacent to each other in the extending direction is approximately equal.
  • the fasteners are shown as screws and the fastening holes are threaded holes, and those skilled in the art will also appreciate that other fasteners may be used to fasten the cover member to the open channel.
  • This structure ensures effective sealing, and the screws used to fasten the cover member are distributed evenly and alternately on opposite sides in the radial direction, so that the distance between the centerlines of adjacent threaded holes is equal, which can effectively ensure the downward pressure of the cover member. It acts evenly on the gasket to facilitate sealing.
  • the open channel is provided with a corresponding groove that matably receives the protrusion.
  • the open channel 130 includes a first branch open channel 133 and a second branch open channel 134 , the first branch is open.
  • the open channel 133 and the second branched open channel 134 are respectively used to define the first branched intermediate fluid channel EP2a and the second branched intermediate fluid channel EP2b of the intermediate fluid channel EP2.
  • An introduction channel EP1 introduced into the intermediate fluid channel EP2 and a discharge channel EP3 for discharging the jet enthalpy-enhancing fluid introduced into the intermediate fluid channel EP2 to at least one compression chamber the introduction channel EP1 is in the first branch of the intermediate fluid channel EP2a and the second The junction of the branch intermediate fluid channel EP2b is communicated to the intermediate fluid channel EP2, and the discharge channel EP3 is provided at and communicated to the end of the first branch middle fluid channel EP2a and the end of the second branch middle fluid channel EP2b, respectively.
  • the intermediate vertical connection channel 170 and the lateral fluid inflow channel 180 in communication with the gas injection enthalpy-enhancing fluid source may form an introduction channel EP1, and an outlet channel in communication with the outlet hole 1313 may be formed
  • the discharge channel EP3 referring to FIG. 4 again, the first branch open channel 133 and the second branch open channel 134 extend from the inlet holes 1312 of the bottom surface 1311 of the bottom groove 131 respectively.
  • the multi-branched grooves of the open channel can realize the enthalpy increase of air injection to each compression chamber.
  • the number of branch channels is shown as two, the number of branch channels may be one or more than two according to the needs of delivering the jet of enthalpy-enhancing fluid to the compression chamber to correspond to the compression of the jet of enthalpy-enhancing fluid to be input. number of cavities.
  • the length of the first branch intermediate fluid channel EP2a is approximately equal to the length of the second branch intermediate fluid channel EP2b, and/or both the first branch intermediate fluid channel EP2a and the second branch intermediate fluid channel EP2b have a substantially constant flow through
  • the cross-sectional area and the flow cross-sectional area of the first branch intermediate fluid channel EP2a is approximately equal to the flow cross-sectional area of the second branch intermediate fluid channel EP2b. Therefore, the branch structure grooves with the same length ensure that the flow rates of the compression chambers are basically the same, which is beneficial to ensure that the compression amounts of the corresponding two compression chambers are basically the same during scroll compression, and ensures the stable operation of the compressor.
  • cross section of the intermediate fluid channel EP2 is a regular quadrilateral or a semicircle, so as to effectively reduce the resistance loss of the enthalpy-enhancing fluid along the channel and help stabilize the fluid injection flow.
  • a high-pressure space for receiving the compressed high-pressure working fluid is provided on the second end face side of the base plate 110 of the fixed scroll 100, so that the cover The outer surface 142 of the member 140 is exposed to the high pressure space.
  • the high-pressure working fluid eg, exhaust pressure
  • the scroll compressor further includes a cover plate (not shown) attached to the second end face 110b of the base plate 110 to define a high pressure space between the base plate 110 and the cover plate.
  • the scroll compressor 10 may further include a variable volume ratio valve and/or a compression mechanism exhaust port valve disposed at the second end face 110b of the base plate 110, and the open channel 130 may be opened to avoid the variable volume ratio valve and/or compression mechanism exhaust valve extending along the second end face 110b.

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

Abstract

一种涡旋压缩机(10)的定涡旋 (100)，其包括基板(110)和从基板(110)的第一端面(110a)延伸的定涡卷(120)，以用于限定涡旋压缩机(10)的一系列压缩腔，在定涡旋(100)中设置有流体通道(EP)，将来自喷气增焓流体源的喷气增焓流体输送至一系列压缩腔中的至少一个压缩腔，基板(110)具有与第一端面(110a)相反的第二端面(110b)，在第二端面(110b)上设置有沿着第二端面(110b)以预定延伸线路延伸的开放式槽道(130)，定涡旋(100)还包括盖构件(140)，盖构件(140)以与开放式槽道(130)的预定延伸线路一致的延伸线路延伸并且覆盖于开放式槽道(130)，以限定构成流体通道(EP)的一部分的中间流体通道。具有结构简单、加工方便、喷气增焓喷射口设计自由度高且安装定位精确的优点。

Description

涡旋压缩机的定涡旋和涡旋压缩机
本申请要求于2020年8月25日提交中国国家知识产权局、申请号为202010863218.5、名称为“涡旋压缩机的定涡旋和涡旋压缩机”的中国专利申请的优先权以及要求于2020年8月25日提交中国国家知识产权局、申请号为202021793811.9、名称为“涡旋压缩机的定涡旋和涡旋压缩机”的中国专利申请的优先权，这些申请的全部内容通过引用结合在本申请中。
技术领域
本公开涉及压缩机领域，具体地，涉及一种具有改进的喷气增焓流体通道的涡旋压缩机的定涡旋。
背景技术
本部分提供了与本公开有关的背景信息，但这些信息并不必然构成现有技术。
在喷气增焓压缩机中，例如在喷气增焓的涡旋压缩机中，通过经由喷气增焓(EVI)通道将一部分中间压力的气体喷射到压缩腔中以与经过部分压缩的冷媒混合再压缩，增加了冷媒的循环量，加大了主循环回路的焓差，从而大大提高了压缩机的效率。
现有技术的涡旋压缩机的EVI喷射通道设计结构的构型方式通常为在定涡旋的基板中钻孔加工以形成喷射通道，结合图5进行描述，在定涡旋的基板1中加工一系列的横孔2、3和竖孔5，横孔2、3通过竖孔5与供喷气增焓流体流入的进入孔4连通，并且，横孔2、3通过呈竖孔形式的出口孔6与相应的压缩腔连通，从而将来自出口孔4的喷气增焓流体输送到各个压缩腔中。
在上述EVI的喷射通道中，两个横孔2和3均为超长深孔，该深孔的加工比较困难，加工过程中刀具断刃的风险很高。并且，用于加工深孔的钻头通常需要定制，整个EVI的喷射通道包含各种尺寸的孔径以及螺纹孔，所需加工的刀具数量较多，加工工序复杂，加工成本较高。此外，为了加工横孔、竖孔、流出孔而形成的与排气腔或者吸气腔连通位置需要采用堵头(未示出)封闭，使得所需的封闭点7较多(多达5个，图中示出了4个)，泄漏风险较高，且相应的所需堵头的数量较多，造成涡旋部件制造成本增加。另外，由于钻孔加工的横孔通常为直线通道，而通向压缩腔的出口孔6的设计只能位于横孔的路径上，这使得EVI喷射口设计位置的自由度受到很大的限制。
现有技术CN1213744A提供了一种改进的涡旋压缩机，其采用了横向节 能器通道，该通道被限定在固定涡卷的外端面与覆盖的盖构件的配合端面之间。由于该节能器通道是形成在组装前外露的端面上，就可较容易地将复杂的横向通道机加工到该端面上。把该通道机加工到该端面上，再将盖构件和固定涡卷固定在一起用以关闭该通道，从而简化了较复杂的节能器横向通道的加工成形过程。然而，该现有技术的缺陷在于：通道流体泄漏风险高、结构复杂且安装定位不精确等。
发明内容
本部分提供本公开的总体概要，而不是对本公开的全部范围或所有特征的全面公开。
本公开的一个目的在于提供具有加工方便、工序简单、喷气增焓喷射口设计自由度高的喷气增焓通道的涡旋压缩机的定涡旋。
本公开的另一目的在于提供具有安装定位精确、结构简单和有效通道密封的喷气增焓通道的涡旋压缩机的定涡旋。
为了实现上述目的，提供了一种涡旋压缩机的定涡旋，所述定涡旋包括基板和从所述基板的第一端面延伸的定涡卷，所述基板和所述定涡卷用于限定所述涡旋压缩机的一系列压缩腔，在所述定涡旋中设置有流体通道，所述流体通道适于将来自喷气增焓流体源的喷气增焓流体输送至所述一系列压缩腔中的至少一个压缩腔，所述基板具有与所述第一端面相反的第二端面，所述基板在所述第二端面上设置有沿着所述第二端面以预定延伸线路延伸的开放式槽道，并且，所述定涡旋还包括盖构件，所述盖构件以与所述开放式槽道的预定延伸线路一致的延伸线路延伸并且覆盖于所述开放式槽道，以限定构成所述流体通道的一部分的中间流体通道。
有利地，所述盖构件嵌置在所述开放式槽道中，使得所述盖构件的背离所述开放式槽道的外表面齐平于或者低于所述第二端面。
有利地，所述开放式槽道为阶梯槽，所述阶梯槽包括底槽和安装定位槽，所述底槽与所述安装定位槽之间形成有台阶面，所述安装定位槽匹配地接纳所述盖构件并且通过所述台阶面支承所述盖构件，所述底槽形成所述中间流体通道。
有利地，所述定涡旋还包括布置在所述盖构件与所述开放式槽道之间的 密封垫。
有利地，沿所述定涡旋的轴向方向观察，所述密封垫的的轮廓与所述盖构件的轮廓相同。
有利地，所述盖构件设置有多个紧固部，所述多个紧固部沿着所述盖构件的延伸方向交替地设置在所述盖构件的本体的相对的第一侧部和第二侧部。
有利地，所述多个紧固部为分别从所述第一侧部或所述第二侧部延伸的突部，在所述突部中设置有供紧固件穿过的紧固孔，沿着所述盖构件的延伸方向相邻的每两个紧固孔之间的距离大致相等。
有利地，所述开放式槽道包括第一分支开放式槽道和第二分支开放式槽道，所述第一分支开放式槽道和所述第二分支开放式槽道分别用于限定所述中间流体通道的第一分支中间流体通道和第二分支中间流体通道，所述流体通道还包括用于将喷气增焓流体引入至所述中间流体通道的引入通道和用于将引入至所述中间流体通道的喷气增焓流体排出至所述至少一个压缩腔的排出通道，所述引入通道在所述第一分支中间流体通道与所述第二分支中间流体通道的交界处连通至所述中间流体通道，所述排出通道分别设置在并且连通至所述第一分支中间流体通道的末端和所述第二分支中间流体通道的末端。
有利地，所述第一分支中间流体通道的长度与所述第二分支中间流体通道的长度大致相等，并且/或者，所述第一分支中间流体通道和所述第二分支中间流体通道均具有大致恒定的流通横截面积并且所述第一分支中间流体通道的流通横截面积与所述第二分支中间流体通道的流通横截面积大致相等。
有利地，所述中间流体通道的横截面呈正四边形或半圆形。
本公开还提供了一种涡旋压缩机，所述涡旋压缩机包括上述的定涡旋。
有利地，在所述定涡旋的基板的第二端面侧设置有用于接纳经过压缩的高压工作流体的高压空间，使得所述盖构件的外表面暴露于所述高压空间中。
有利地，所述涡旋压缩机还包括设置在所述基板的第二端面处的可变容积比阀和/或压缩机构排气口阀，所述开放式槽道以避让所述可变容积比阀和/或所述压缩机构排气口阀的方式沿着所述第二端面延伸。
有利地，所述涡旋压缩机还包括盖板，所述盖板附接至所述基板的第二端面以在所述基板与所述盖板之间限定所述高压空间。
本公开的压缩机的定涡旋提供了改进的喷气增焓流体通道，定涡旋端板的第二端面上开设形成EVI通道的槽道，形状/轮廓延伸一致的盖构件安装在槽道上使得方便安装定位盖构件的同时有利于槽道的密封，实现准确的安装定位和有效的通道密封，同时加工方便、工序简单，还避免了定涡旋的基板上的其他结构特征的干涉，可以达到任意的相应喷气增焓流体喷射位置点，提高了喷气增焓流体喷射位置点设计的自由度。
附图说明
参照下面结合附图对本公开的示例性实施方式的详细说明，可以更加容易地理解本公开的以上和其他目的、特点和优点。在所有附图中，相同的或对应的技术特征或组成部分将采用相同或对应的附图标记来表示。在附图中：
图1为示出根据本公开的实施方式的包括喷气增焓通道构造的涡旋压缩机的一部分；
图2为示出了图1的包括喷气增焓通道构造的定涡旋的剖视立体图，其中，定涡旋的基板的第二端面上的开放式槽道和盖构件限定了喷气增焓通道；
图3a为示出了图2的去除了盖构件之后的定涡旋的剖视立体图；
图3b为示出了图3a的细节A的放大示意图；
图4为示出了根据本公开的实施方式的一个方面的压缩机的定涡旋的立体图，其中，定涡旋基板上的开放式槽道为两分支开放式槽道构造；
图5为示出了现有技术的包括喷气增焓通道构造的涡旋压缩机的定涡旋的剖视立体图。
具体实施方式
下面参照附图、借助于示例性实施方式对本公开进行详细描述。要注意的是，对本公开的以下详细描述仅仅是出于说明目的，而绝不是对本公开的限制。此外，在各个附图中采用相同的附图标记来表示相同的部件。本公开中的“内外”、“径向”、“横向”相对于压缩机的纵向轴线方向而言。
本公开所涉及的压缩机和压缩机构为应用有喷气增焓的压缩机及其压缩机构。在本公开的实施方式中，该压缩机可以是应用有喷气增焓的涡旋压缩机。可以理解的是，该压缩机也可以是应用有喷气增焓的其他类型的压缩机。
现在，将结合具体实施方式对本公开进行详细描述。
参见图1至图3b，对根据本公开的一个实施方式的涡旋压缩机10的定涡旋100进行描述，定涡旋100包括基板110和从基板的第一端面110a延伸的定涡卷120，基板110和定涡卷120用于限定涡旋压缩机的一系列压缩腔，在定涡旋中设置有流体通道EP，流体通道EP适于将来自喷气增焓流体源的喷气增焓流体输送至一系列压缩腔中的至少一个压缩腔，在基板110的与第一端面110a相反的第二端面(即，外端面)110b处设置有沿着第二端面110b以预定延伸线路延伸的开放式槽道130，并且，定涡旋还包括盖构件140，盖构件140以与开放式槽道130的预定延伸线路一致的延伸线路延伸并且覆盖于开放式槽道130，以限定构成流体通道EP的一部分的中间流体通道EP2。
其中，“开放式槽道”解释为：该槽道在第二端面上开设并且在未安装盖构件的情况下、在远离该第二端面的方向上是敞开的，而在将盖构件安装成覆盖于该槽道之后，该槽道与盖构件一起限定出中间流体通道。“与延伸线路一致”解释为：从定涡旋的轴向方向观察时盖构件与开放式槽道轮廓相同或大体相同。例如，盖构件仅覆盖在开放式槽道上或者覆盖在开放式槽道及槽道边缘上而非基本上覆盖整个第二端面，盖构件可以呈长条状。
结合图1，喷气增焓流体源的喷气增焓流体通过安装至压缩机10的壳体11上的连接管12输送到压缩机10的定涡旋的流体通道EP中，特别地输送到由盖构件和开放式槽道限定的中间流体通道EP2中。根据上述构造，形成作为喷气增焓流体通道的开放式槽道由于形成在基板的第二端面上，使得可以利用简单的机加工方式例如铣削来实现，相应的加工工艺也变得简单，易于实现。同时，在整个开放式槽道的特征中，无特殊结构的加工特征，所需加工的刀具种类少，加工工序简单，加工成本较低。开放式槽道的预定延伸线路可以是直线或曲线(例如，大致U形)，只要避开定涡旋的基板上的其他结构特征，可以达到任意的相应喷气增焓流体喷射位置点，极大地提高了喷气增焓流体喷射位置点设计的自由度。并且，由于采用与槽道形状/轮廓一致的盖构件，能够避免对设置在第二端面上的其他特征的干涉，而实现了安装方便、结构更加简单、最小化流体泄露而实现有效密封。
在该实施方式中，所述盖构件140嵌置在开放式槽道130中，使得盖构件140的背离开放式槽道130的外表面142低于第二端面110b。当然可以想到的是，外表面142可以齐平于第二端面110b。该构造可以进一步避免干涉其他特征，且进一步有利于盖构件的安装定位。
在该实施方式的一个有利方面，所述开放式槽道130为阶梯槽，阶梯槽 包括底槽131和安装定位槽132，并且在底槽131与安装定位槽132之间形成有台阶面1321，安装定位槽132匹配地接纳盖构件140并且通过台阶面1321支承盖构件140，底槽131形成中间流体通道EP2。借助于该构造，进一步有利于盖构件的安装定位和流体通道的密封。其中，安装定位槽132的底面可以形成台阶面1321，
参见图3a和图3b，在底槽131的底面1311上设置有供喷气增焓流体流入的进入孔1312和通向压缩腔的出口孔1313，该出口孔呈竖孔形式并且数目为两个，可以想到是，出口孔的数目可以根据需要设置为一个或多于两个。定涡旋100还包括与进入孔1312连通的中间竖向连接通道170和与喷气增焓流体源连通的横向流体流入通道180，中间竖向连接通道170与横向流体流入通道180连通，以将来自喷气增焓流体源的喷气增焓流体输送至中间流体通道EP2，进而通过出口孔1313经由出口通道供应至相应的压缩腔中。
参见图2，所述定涡旋100还包括布置在盖构件140与开放式槽道130之间的密封垫150。该密封垫进一步改进密封。额外地，在盖构件与安装定位槽的侧壁之间也可以设置有密封垫。其中，沿定涡旋100的轴向方向观察，密封垫150的的轮廓与盖构件140的轮廓相同。
在该实施方式的另一个方面，所述盖构件140设置有多个紧固部144(参见图2)，多个紧固部144沿着盖构件140的延伸方向交替地设置在盖构件的本体的(在图中示出为在径向方向上)相对的第一侧部和第二侧部。有利地，所多个紧固部144为分别从第一侧部或第二侧部延伸的突部，在突部中设置有供紧固件160穿过的紧固孔，沿着盖构件的延伸方向相邻的每两个紧固孔之间的距离大致相等。在附图中，紧固件示出为螺钉，紧固孔为螺纹孔，本领域的技术人员也可以想到其他的紧固件也可以用于将盖构件紧固至开放式槽道。该构造确保有效的密封，用于紧固盖构件的螺钉分布为径向内外相反两侧交替均匀分布，使得相邻螺纹孔的中心线之间的距离相等,可以有效地确保盖构件的下压力均匀作用在密封垫上而有利于密封。此外，开放式槽道上设置有匹配地接纳该突部的相应的凹槽。
根据本公开的实施方式的一个方面，参见图1、图2和图4，所述开放式槽道130包括第一分支开放式槽道133和第二分支开放式槽道134，第一分支开放式槽道133和第二分支开放式槽道134分别用于限定中间流体通道EP2的第一分支中间流体通道EP2a和第二分支中间流体通道EP2b，流体通道EP还包括用于将喷气增焓流体引入至中间流体通道EP2的引入通道EP1和用于 将引入至中间流体通道EP2的喷气增焓流体排出至至少一个压缩腔的排出通道EP3，引入通道EP1在第一分支中间流体通道EP2a与第二分支中间流体通道EP2b的交界处连通至中间流体通道EP2，排出通道EP3分别设置在并且连通至第一分支中间流体通道EP2a的末端和第二分支中间流体通道EP2b的末端。在实施方式的其他方面，结合图3a和图3b，中间竖向连接通道170和与喷气增焓流体源连通的横向流体流入通道180可以形成引入通道EP1，与出口孔1313连通的出口通道可以形成排出通道EP3，再结合图4，第一分支开放式槽道133和第二分支开放式槽道134从底槽131的底面1311的进入孔1312分别延伸。
借助于上述构造，开放式槽道的多分支槽可以实现对各个压缩腔的喷气增焓。虽然分支槽道的数目示出为两个，可以根据对压缩腔输送喷气增焓流体的需要，分支槽道的数目可以是一个或多于两个，以对应于待输入喷气增焓流体的压缩腔的数目。
有利地，第一分支中间流体通道EP2a的长度与第二分支中间流体通道EP2b的长度大致相等，并且/或者，第一分支中间流体通道EP2a和第二分支中间流体通道EP2b均具有大致恒定的流通横截面积并且第一分支中间流体通道EP2a的流通横截面积与第二分支中间流体通道EP2b的流通横截面积大致相等。因此，长度相等的分支结构槽以确保各个压缩腔的流量基本一致，有利于保证涡旋压缩时相应的两个压缩腔的压缩量基本一致，确保了压缩机工作的稳定。
进一步地，所述中间流体通道EP2的横截面呈正四边形或半圆形，从而有效降低喷气增焓流体沿通道的阻力损失而有利于稳定流体喷射流量。
根据本公开的实施方式的另一个方面，在该涡旋压缩机10，其中，在定涡旋100的基板110的第二端面侧设置有用于接纳经过压缩的高压工作流体的高压空间，使得盖构件140的外表面142暴露于高压空间中。借助于该布置，高压工作流体(例如，排气压力)作用于盖构件进而作用于密封垫抵靠安装定位槽，使得进一步加强了密封垫的密封效果，泄漏风险小。特别地，涡旋压缩机还包括盖板(未示出)，盖板附接至基板110的第二端面110b以在基板110与盖板之间限定高压空间。
此外，所述涡旋压缩机10还可以包括设置在基板110的第二端面110b处的可变容积比阀和/或压缩机构排气口阀，开放式槽道130以避让可变容积 比阀和/或压缩机构排气口阀的方式沿着第二端面110b延伸。
虽然已经参照示例性实施方式对本公开进行了描述，但是应当理解，本公开并不局限于文中详细描述和示出的具体实施方式。在不偏离本公开的权利要求书所限定的范围的情况下，本领域技术人员可以对示例性实施方式做出各种改变。

Claims (14)

  1. 一种涡旋压缩机(10)的定涡旋(100)，所述定涡旋包括基板(110)和从所述基板的第一端面(110a)延伸的定涡卷(120)，所述基板(110)和所述定涡卷(120)用于限定所述涡旋压缩机的一系列压缩腔，在所述定涡旋中设置有流体通道(EP)，所述流体通道(EP)适于将来自喷气增焓流体源的喷气增焓流体输送至所述一系列压缩腔中的至少一个压缩腔，
    其特征在于，所述基板(110)具有与所述第一端面(110a)相反的第二端面(110b)，所述基板(110)在所述第二端面(110b)上设置有沿着所述第二端面(110b)以预定延伸线路延伸的开放式槽道(130)，并且，所述定涡旋还包括盖构件(140)，所述盖构件(140)以与所述开放式槽道(130)的预定延伸线路一致的延伸线路延伸并且覆盖于所述开放式槽道(130)，以限定构成所述流体通道(EP)的一部分的中间流体通道(EP2)。
  2. 根据权利要求1所述的定涡旋(100)，其中，所述盖构件(140)嵌置在所述开放式槽道(130)中，使得所述盖构件(140)的背离所述开放式槽道(130)的外表面(142)齐平于或者低于所述第二端面(110b)。
  3. 根据权利要求1所述的定涡旋(100)，其中，所述开放式槽道(130)为阶梯槽，所述阶梯槽包括底槽(131)和安装定位槽(132)，所述底槽(131)与所述安装定位槽(132)之间形成有台阶面(1321)，所述安装定位槽(132)匹配地接纳所述盖构件(140)并且通过所述台阶面(1321)支承所述盖构件(140)，所述底槽(131)形成所述中间流体通道(EP2)。
  4. 根据权利要求1至3中任一项所述的定涡旋(100)，其中，所述定涡旋(100)还包括布置在所述盖构件(140)与所述开放式槽道(130)之间的密封垫(150)。
  5. 根据权利要求4所述的定涡旋(100)，其中，沿所述定涡旋(100)的轴向方向观察，所述密封垫(150)的轮廓与所述盖构件(140)的轮廓相同。
  6. 根据权利要求1至3中任一项所述的定涡旋(100)，其中，所述盖构件(140)设置有多个紧固部(144)，所述多个紧固部(144)沿着所述盖构件(140)的延伸方向交替地设置在所述盖构件的本体的相对的第一侧部和第二侧部。
  7. 根据权利要求6所述的定涡旋(100)，其中，所述多个紧固部(144)为分别从所述第一侧部或所述第二侧部延伸的突部，在所述突部中设置有供紧固件(160)穿过的紧固孔，沿着所述盖构件的延伸方向相邻的每两个紧固孔之间的距离大致相等。
  8. 根据权利要求1至3中任一项所述的定涡旋(100)，其中：
    所述开放式槽道(130)包括第一分支开放式槽道(133)和第二分支开放式槽道(134)，所述第一分支开放式槽道(133)和所述第二分支开放式槽道(134)分别用于限定所述中间流体通道(EP2)的第一分支中间流体通道(EP2a)和第二分支中间流体通道(EP2b)，
    所述流体通道(EP)还包括用于将喷气增焓流体引入至所述中间流体通道(EP2)的引入通道(EP1)和用于将引入至所述中间流体通道(EP2)的喷气增焓流体排出至所述至少一个压缩腔的排出通道(EP3)，
    所述引入通道(EP1)在所述第一分支中间流体通道(EP2a)与所述第二分支中间流体通道(EP2b)的交界处连通至所述中间流体通道(EP2)，所述排出通道(EP3)分别设置在并且连通至所述第一分支中间流体通道(EP2a)的末端和所述第二分支中间流体通道(EP2b)的末端。
  9. 根据权利要求8所述的定涡旋(100)，其中，所述第一分支中间流体通道(EP2a)的长度与所述第二分支中间流体通道(EP2b)的长度大致相等，并且/或者，所述第一分支中间流体通道(EP2a)和所述第二分支中间流体通道(EP2b)均具有大致恒定的流通横截面积并且所述第一分支中间流体通道(EP2a)的流通横截面积与所述第二分支中间流体通道(EP2b)的流通横截面积大致相等。
  10. 根据权利要求1至3中任一项所述的定涡旋(100)，其中，所述中间流体通道(EP2)的横截面呈正四边形或半圆形。
  11. 一种涡旋压缩机(10)，其特征在于，所述涡旋压缩机包括根据权利要求1至10中任一项所述的定涡旋(100)。
  12. 根据权利要求11所述的涡旋压缩机(10)，其中，在所述定涡旋(100)的基板(110)的第二端面侧设置有用于接纳经过压缩的高压工作流体的高压空间，使得所述盖构件(140)的外表面(142)暴露于所述高压空间中。
  13. 根据权利要求12所述的涡旋压缩机(10)，其中，所述涡旋压缩机还包括设置在所述基板(110)的第二端面(110b)处的可变容积比阀和/或压缩机构排气口阀，所述开放式槽道(130)以避让所述可变容积比阀和/或所述压缩机构排气口阀的方式沿着所述第二端面(110b)延伸。
  14. 根据权利要求12或13所述的涡旋压缩机(10)，其中，所述涡旋压缩机还包括盖板，所述盖板附接至所述基板(110)的所述第二端面(110b)以在所述基板(110)与所述盖板之间限定所述高压空间。
PCT/CN2020/127428 2020-08-25 2020-11-09 涡旋压缩机的定涡旋和涡旋压缩机 WO2022041486A1 (zh)

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