Scroll compression mechanism and scroll compressor including the same

Abstract

The present application relates to a scroll compression mechanism and a scroll compressor comprising the same, the scroll compression mechanism comprising a fixed scroll and an orbiting scroll, a head section of the orbiting scroll and a head section of the fixed scroll defining a discharge chamber in a state of being about to be in fluid communication with a compression chamber but not yet in fluid communication with the compression chamber, an inwardly recessed flow guide groove being provided on an inner wall of the head section of the orbiting scroll to increase the flow rate of fluid flowing from the compression chamber into the discharge chamber when the head section of the orbiting scroll and the head section of the fixed scroll are separated, the head section of the orbiting scroll being configured to prevent the compression chamber from being in fluid communication with the discharge chamber via at least one discharge valve port by covering at least a portion of the at least one discharge valve port with a top surface of the head section of the orbiting scroll during operation. The above-mentioned scroll compression mechanism and scroll compressor can reduce power loss, improve discharge efficiency, avoid over-compression, alleviate or eliminate pressure surge during the discharge process, improve scroll strength, and have a simple structure and high cost-effectiveness.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of scroll compressors, and more particularly, to a scroll compression mechanism and a scroll compressor including the same. BACKGROUND

[0002] This section provides background information which is not necessarily prior art.

[0003] Scroll compressors can be applied, for example, in refrigeration systems, air conditioning systems, and heat pump systems. A scroll compressor includes a scroll compression mechanism (also simply referred to as a "compression mechanism") for compressing a working fluid. The compression mechanism includes a fixed scroll and an orbiting scroll. The fixed scroll and the orbiting scroll are engaged to define a series of pockets therebetween that move from a radially outer side to a radially inner side and gradually decrease in volume, including a suction pocket that sucks in fluid, a compression pocket, and a discharge pocket that communicates with a discharge port so as to discharge the compressed fluid.

[0004] Those skilled in the art have been endeavoring to reduce power loss and / or improve discharge efficiency of scroll compressors. SUMMARY

[0005] In this section, a general summary of the application is provided, but not a comprehensive disclosure of the full scope or all features of the application.

[0006] An object of the present application is to provide an improved scroll compression mechanism and scroll compressor that can reduce power loss and improve discharge efficiency.

[0007] Another object of the present application is to provide an improved scroll compression mechanism and scroll compressor that can avoid power loss due to excessive compression and simultaneously alleviate or eliminate the situation of pressure surge during the discharge process.

[0008] Another object of the present application is to provide an improved scroll compression mechanism and scroll compressor that can ensure the strength of the scroll wrap and improve the scroll wrap. The scroll compression mechanism and scroll compressor have a simple structure, are easy to implement, and have a high cost-effectiveness.

[0009] According to an aspect of the present application, there is provided a scroll compression mechanism, including:

[0010] a fixed scroll including a fixed scroll end plate and a fixed scroll wrap extending from one side of the fixed scroll end plate; and

[0011] an orbiting scroll including an orbiting scroll end plate and an orbiting scroll wrap extending from one side of the orbiting scroll end plate,

[0012] The fixed scroll is engaged with the orbiting scroll to define therebetween, in order from radially outer to radially inner, an open suction chamber, at least one closed compression chamber, and a central exhaust chamber,

[0013] The fixed scroll end plate includes an exhaust port in fluid communication with the exhaust chamber and at least one exhaust valve port in fluid communication with the compression chamber for early exhaust,

[0014] The orbiting scroll wrap includes an orbiting scroll wrap head section, the fixed scroll wrap includes a fixed scroll wrap head section, the orbiting scroll wrap head section and the fixed scroll wrap head section define the exhaust chamber in a state where the exhaust chamber is about to be in fluid communication with the compression chamber but is not yet in fluid communication with the compression chamber, an inwardly recessed flow guide groove is provided on an inner wall of the orbiting scroll wrap head section to increase the flow of fluid from the compression chamber into the exhaust chamber when the orbiting scroll wrap head section and the fixed scroll wrap head section are separated,

[0015] The orbiting scroll wrap head section is configured to prevent fluid communication between the compression chamber and the exhaust chamber via the at least one exhaust valve port by covering at least a portion of the at least one exhaust valve port with a top surface of the orbiting scroll wrap head section during operation.

[0016] Thus, the scroll compression mechanism and scroll compressor can reduce power loss and improve exhaust efficiency. Also, the scroll compression mechanism and scroll compressor can avoid power loss due to excessive compression and simultaneously alleviate or eliminate the situation of pressure surge during the exhaust process.

[0017] According to one embodiment of the present invention, at least a portion of the flow guide groove extends to the top surface of the orbiting scroll wrap head section.

[0018] According to one embodiment of the present invention, the flow guide groove is positioned at a predetermined distance from the top surface of the orbiting scroll wrap head section.

[0019] According to one embodiment of the present invention, the flow guide groove is disposed closer to the top surface of the orbiting scroll wrap head section than to the root of the orbiting scroll wrap connected to the fixed scroll end plate. Thereby, the strength of the root of the scroll wrap is improved.

[0020] According to one embodiment of the present invention, the flow guide groove is disposed to extend a predetermined distance from an initial point toward the inner end of the orbiting scroll wrap head section, the initial point being a position of the orbiting scroll wrap head section engaged with the fixed scroll wrap head section and about to start disengaging from the fixed scroll wrap head section.

[0021] According to one embodiment of the invention, the guide groove is configured to have different recess depths at different locations, and has the maximum recess depth at the starting point.

[0022] According to one embodiment of the present invention, the extension height of the guide groove in the axial direction of the vortex compression mechanism is less than or equal to 2 / 3 of the axial height of the moving vortex, so as to ensure the strength of the vortex.

[0023] According to one embodiment of the present invention, the recessed depth of the guide groove is less than or equal to 7 / 8 of the thickness of the corresponding section of the moving vortex head section, so as to ensure the strength of the vortex.

[0024] According to one embodiment of the present invention, the thickness of the portion of the moving vortex head section in which the guide groove is provided is greater than or equal to 0.5 mm.

[0025] According to one embodiment of the invention, the guide channel is configured to include at least one section, so as to improve exhaust flow efficiency while avoiding undesirable premature mixing of the compressed fluid.

[0026] According to another aspect of the present invention, a scroll compressor is provided, the scroll compressor comprising the scroll compression mechanism as described above.

[0027] In summary, the scroll compression mechanism and scroll compressor according to the present invention provide at least the following beneficial effects: the scroll compression mechanism and scroll compressor according to the present invention can reduce power loss and improve exhaust efficiency, avoid power loss caused by over-compression and simultaneously alleviate or eliminate pressure surges during exhaust, while ensuring the strength of the scroll, improving the scroll, and having a simple structure, being easy to implement, and having high cost-effectiveness. Attached Figure Description

[0028] The foregoing and other features and characteristics of the invention will become clearer from the following detailed description with reference to the accompanying drawings, which are by way of example only and are not necessarily drawn to scale. The same reference numerals are used in the drawings to indicate the same parts, in which:

[0029] Figure 1 A schematic longitudinal cross-sectional view of a scroll compressor according to a first embodiment of the present invention is shown;

[0030] Figure 2a Show Figure 1 An exploded view of the scroll compressor mechanism in the scroll compressor.

[0031] Figure 2b Show Figure 2a A three-dimensional diagram of a fixed vortex;

[0032] Figure 2c Show Figure 2a A three-dimensional diagram of the moving vortex;

[0033] Figure 2d Show Figure 2a A side view of the assembled vortex compressor mechanism and its corresponding KK cross-section.

[0034] Figure 2e A schematic diagram showing the change process of the exhaust chamber defined by the moving scroll and the fixed scroll during the exhaust of a scroll compressor;

[0035] Figure 3a A perspective view of a moving vortex in a vortex compression mechanism according to a second embodiment of the present invention is shown, showing a first side view of the moving vortex;

[0036] Figure 3b A side view showing the assembled state of the scroll compressor mechanism according to a second embodiment of the present invention and its corresponding MM cross-sectional view; and

[0037] Figure 3c A side view of the assembled state of the vortex compressor mechanism according to a second embodiment of the present invention and its corresponding LL cross-sectional view are shown. Detailed Implementation

[0038] Now we will combine the appendix Figures 1-3c The preferred embodiments of the present invention will now be described in detail. The following description is exemplary in nature and is not intended to limit the invention or its application or use.

[0039] In the exemplary embodiments described below, a vertical scroll compressor is used as an example for ease of description. However, the scroll compressor according to the invention can also be any other suitable type of scroll compressor, such as a horizontal scroll compressor.

[0040] Figures 1 to 2e A first embodiment according to the present invention is shown. Referring below... Figures 1 to 2e The first embodiment will be described in detail.

[0041] like Figure 1 As shown, the scroll compressor 100 may include a housing 10, an electric motor (including a stator 14 and a rotor 15), a drive shaft 16, a main bearing housing 18, a moving scroll 24, and a fixed scroll 22. The moving scroll 24 and the fixed scroll 22 constitute a scroll compression mechanism (hereinafter also referred to as the "compression mechanism") CM suitable for compressing a working fluid (e.g., a refrigerant), as... Figure 2a and Figure 2bAs better illustrated, the fixed scroll 22 includes a fixed scroll end plate 221, a fixed scroll 222, and an exhaust port V located at the center of the fixed scroll end plate 221; the moving scroll 24 includes a moving scroll end plate 241, a moving scroll 242, and a hub 240, wherein the fixed scroll 222 and the moving scroll 242 engage to sequentially define, from radially outer to radially inner, an open intake chamber fluidly communicating with the intake port (not shown) of the compression mechanism CM, at least one closed compression chamber for compressing the working fluid, and an open exhaust chamber E fluidly communicating with the exhaust port V (see Figure 1). Figure 2d and Figure 2e There can be two or more closed compression chambers. The pressure in the radially inner compression chamber is higher than that in the radially outer compression chamber. In this paper, for ease of description, the compression chamber adjacent to the exhaust chamber E is referred to as the high-pressure chamber H. In particular, regarding the exhaust chamber E, it should be noted that, in this paper, the exhaust chamber E refers to the chamber defined by the fixed vortex 222 and the moving vortex 242, which is formed at the critical moment when it is about to be fluidly connected to the high-pressure chamber H—that is, the current exhaust ends and the next exhaust is about to begin—but is still not fluidly connected to the high-pressure chamber H. The exhaust chamber E will be described in detail below in conjunction with "starting point A".

[0042] The electric motor includes a stator 14 and a rotor 15. The rotor 15 drives the drive shaft 16 to rotate about its axis of rotation relative to the housing 10. The fixed scroll 22 is fixed to the main bearing housing 18 and held in place, while the moving scroll 24 is driven by the electric motor via the drive shaft 16, thereby enabling it to perform translational rotation relative to the fixed scroll 22—that is, about-rotation (i.e., the axis of the moving scroll 24 revolves relative to the axis of the fixed scroll 22, but neither the moving scroll 24 nor the fixed scroll 22 rotates about their respective axes). Thus, the inlet of the compression mechanism CM draws in low-pressure fluid, compresses the fluid through a series of closed compression chambers, and then discharges high-pressure fluid into the exhaust chamber E and through the exhaust port V.

[0043] like Figure 2d As shown, during the operation of the compression mechanism CM, a pair of high-pressure chambers H are defined within the compression mechanism CM. The two high-pressure chambers H are adjacent to the radially central exhaust chamber E. At this time, the current exhaust process in the exhaust chamber E ends, and it is about to be fluidly connected to the two high-pressure chambers H for the next exhaust process. When fluid can flow from the two high-pressure chambers H into the exhaust chamber E, the fluid is discharged through the exhaust port V as the moving vortex 24 rotates. After the fluid in the high-pressure chambers H is discharged, the compression chamber radially outside the high-pressure chambers H is about to be connected to the exhaust chamber E for the next exhaust process.

[0044] The inventors of this application studied the entire flow process of fluid within a vortex compressor mechanism and discovered significant pressure variations in the fluid. For example, under certain operating conditions, the fluid is compressed to a pressure higher than the required pressure. Furthermore, pressure abrupt changes occur during the transition from one exhaust process to another. Based on these findings, the inventors of this application propose a solution that can simultaneously address the power loss caused by these pressure variations.

[0045] Under certain operating conditions of a scroll compressor, the required discharge gas pressure may be lower than the designed discharge pressure (i.e., the designed fluid pressure discharged via discharge port V). Under these conditions, if the fluid is compressed into discharge chamber E and discharged via discharge port V, overcompression of the fluid occurs. Overcompression causes the scroll compressor mechanism CM to perform unnecessary work, resulting in excessive power loss. To avoid power loss due to overcompression of the fluid by the compressor mechanism CM, the fixed scroll end plate 221 may be located near the discharge chamber E, preferably but not limited to the high-pressure chamber H (see [reference]). Figure 2d At least one exhaust valve port P in fluid communication (see Figure 2b The exhaust valve port P is preferably closed by a valve such as an electronic valve and opened under certain conditions (e.g., a predetermined pressure) to pre-discharge the fluid in the high-pressure chamber H to the exhaust port V before it enters the exhaust chamber E, thereby avoiding unnecessary further compression of the fluid. It is preferable to provide multiple exhaust valve ports P to connect the two high-pressure chambers H to the exhaust chamber respectively. For example, as... Figure 2b As shown, four exhaust valve ports P are provided on opposite radial sides of the exhaust port V. By providing exhaust valve ports P, power loss caused by over-compression can be avoided, thus reducing the power consumption of the scroll compressor 100.

[0046] In addition, such as Figure 2d and Figure 2e As shown, the moving vortex 242 includes a moving vortex head section 246, and the fixed vortex 222 includes a fixed vortex head section 226. The moving vortex head section 246 and the fixed vortex head section 226 together define the aforementioned exhaust chamber E—that is, a chamber formed at the critical moment when the current exhaust has ended and the next exhaust is about to begin, but it is not yet fluidly connected to the high-pressure chamber H, and is only fluidly connected to the exhaust port V. At this time, the moving vortex head section 246 engages with the fixed vortex head section 226 at the starting point A, and the fixed vortex head section 226 engages with the moving vortex head section 246 at point B. In other words, in this document, the moving vortex head section 246 is defined as the section from the starting point A to the end (i.e., the radially inner end), and the fixed vortex head section 226 is defined as the section from point B to the end (i.e., the radially inner end), and both define the exhaust chamber E.

[0047] Additionally, it should be noted that, for ease of description, the terminology for exhaust chamber E and high-pressure chamber H will remain unchanged before and after the transitions in different exhaust processes to avoid confusion or misunderstanding. Figure 2d , Figure 2e , Figure 3b , Figure 3c As shown in the diagram. Those skilled in the art will understand that in actual operation, the various cavities are variable and there are no fixed dividing points.

[0048] like Figure 2e This diagram illustrates the changing stages of the exhaust chamber E defined by the moving scroll head section 246 and the fixed scroll head section 226 during the exhaust process of the scroll compressor 100. It shows a second configuration of the moving scroll head section 246 with guide grooves 2460 and a first configuration without guide grooves. Note that... Figure 2e The guide channel 2460 in the figure is only schematic and its actual shape and size are not specifically depicted. Specifically, as shown in the "first stage" of the first configuration, the moving scroll head section 246 and the fixed scroll head section 226 engage with each other to define the exhaust chamber E. The "first stage" here refers to the critical stage before the start of exhaust. At this time, the moving scroll head section 246 engages with the fixed scroll head section 226 at the starting point A. Next, the "second stage" begins - that is, the start of exhaust stage. At this time, the moving scroll head section 246 begins to disengage from the fixed scroll head section 226 at the starting point A, so that fluid begins to flow from the high-pressure chamber H into the exhaust chamber E (as shown by the arrow in the figure), thus starting the exhaust. However, at this time, because the gap between the moving scroll head section 246 and the fixed scroll head section 226 is very small, the exhaust efficiency is very low and may cause a sudden increase in instantaneous pressure in the high-pressure chamber H. As mentioned above, in order to improve the exhaust efficiency of the exhaust chamber E of the compression mechanism CM and alleviate the instantaneous pressure surge in the high-pressure chamber H, a guide groove 2460 can be provided on the inner wall 2466 of the moving scroll head section 246 facing the exhaust chamber E, thereby accelerating the flow of fluid from the high-pressure chamber H into the exhaust chamber E, so as to improve the exhaust efficiency and the working efficiency of the scroll compressor 100. Figure 2e As shown in the schematic diagram of each stage in the second configuration, by setting the guide groove 2460, the gap between the moving vortex head section 246 and the fixed vortex head section 226 can be significantly increased, thereby improving exhaust efficiency.

[0049] The scroll compressor mechanism of this application addresses the technical problems of overcompression and pressure surges during fluid travel, thereby significantly reducing power loss and improving the efficiency of the scroll compressor. Typically, the placement of the exhaust valve port P limits structural improvements to the scroll (especially the moving scroll), often leading to fluid leakage between adjacent chambers or reduced scroll strength. However, the inventors of this application propose a solution combining the exhaust valve port P with scroll improvements. This optimizes the exhaust passage while eliminating premature mixing before exhaust begins due to the connection between the scroll compression chamber (especially the high-pressure chamber) and the exhaust chamber (i.e., premature mixing of compressed fluids in different chambers via the exhaust valve port P before reaching the expected pressure level), further improving the efficiency of the scroll compressor. Simultaneously, improvements to the scroll structure design reduce root stress on the scroll.

[0050] Furthermore, preferably, the guide groove 2460 is configured to extend from the aforementioned starting point A—that is, the starting point A is the position on the moving scroll head section 246 that contacts the slightly part 2260 when the fixed scroll head section 226 and the moving scroll head section 246 are about to disengage. This allows for effective acceleration of the fluid flow from the high-pressure chamber H into the exhaust chamber E during the initial exhaust stage—that is, the aforementioned second stage and the third stage—that is, the exhaust stage where the gap further widens.

[0051] It should be noted that the term "slight section 2260" in this document refers only to a section of the fixed scroll head section 226 near the end, and is not intended to specifically refer to the end. That is, the slight section 2260 that engages with point A of the moving scroll head section 246 can preferably be its terminal endpoint, or it can be a position of the section at a certain distance from the terminal endpoint. Although in the embodiments of the present invention, the part that engages with the starting point A of the moving scroll head section 246 is preferably the terminal endpoint of the fixed scroll head section 226, it should be understood that there is no particular limitation in this regard.

[0052] As mentioned above, for the scroll compressor mechanism CM and scroll compressor 100 that simultaneously have an exhaust valve port P and a guide groove 2460, since the moving scroll head section 246 includes the guide groove 2460, the axial top surface 247 of the moving scroll head section 246 becomes narrower. Therefore, during the compression operation when the moving scroll 24 and the stationary scroll 22 abut against each other, the following technical problem may exist: the top surface 247 of the moving scroll head section 246 may not be able to properly cover the exhaust valve port P at a certain moment, causing the exhaust valve port P to span across both sides of the moving scroll head section 246 and connect the fluid in the space on both sides, which may lead to a decrease in compression efficiency, which is undesirable. To solve this technical problem, the present invention improves the configuration of the flow channel 2460. Generally speaking, the flow channel 2460 according to the present invention is configured such that the top surface 247 of the moving scroll head section 246 can cover the exhaust valve port P during operation such that each exhaust valve port P does not, for example, cross over both sides of the moving scroll head section 246 and connect the fluid in the space on both sides.

[0053] The following will refer to Figure 2c and Figure 2d Let me describe the configuration of the flow channel 2460 in detail.

[0054] As in Figure 2c and Figure 2dAs shown, in this embodiment, the guide channel 2460 is preferably configured to extend to the top surface 247 of the moving vortex head section 246, and is preferably configured as a two-section channel, that is, the guide channel 2460 includes a first channel section 2461 and a second channel section 2462 spaced apart from each other, that is, there is a gap section 2463 between the first channel section 2461 and the second channel section 2462 where no material has been removed. As mentioned above, the guide channel 2460 still preferably extends from the aforementioned starting point A, that is, the first channel section 2461 extends from the starting point A, thereby better accelerating the exhaust, and more preferably, the first channel section 2461 has a relatively larger recessed depth at the starting point A—that is, the depth recessed into the moving vortex head section 246 along the normal direction of the tangent of the inner wall 2466, thereby enabling the fluid to enter the exhaust chamber E more quickly at the starting point A, that is, at the beginning of exhaust. Generally, the guide groove 2460 is preferably configured to have different recess depths at different locations, and preferably has the maximum recess depth near the starting point A. More preferably, the recess depth of the guide groove 2460 is less than or equal to 7 / 8 of the thickness of the moving scroll head section 246, that is, the thickness of the portion of the moving scroll head section 246 including the guide groove 2460—that is, the remaining portion after material removal—should be no less than 1 / 8 of its original thickness, and more preferably, the thickness of the portion of the moving scroll head section 246 including the guide groove 2460—that is, the remaining portion after material removal—is greater than or equal to 0.5 mm, thereby ensuring that this portion has the required strength.

[0055] Furthermore, preferably, the extension height of the guide groove 2460 in the axial direction of the scroll compressor mechanism CM is less than or equal to 2 / 3 of the total axial height of the moving scroll 246, to ensure the required strength. Also preferably, the guide groove 2460 is configured to be closer overall to the top surface 247 of the moving scroll head section 246 and further away from the root of the moving scroll head section 246 connected to the moving scroll end plate 241, to ensure the strength of the moving scroll head section 246.

[0056] Regarding the second groove section 2462, as follows Figure 2c and Figure 2c As shown, the second groove section 2462 preferably extends to the end of the moving scroll head section 246 to better accelerate the flow of fluid into the exhaust chamber E throughout the exhaust process. However, the invention is not limited to this; that is, the length (radian) of the guide groove 2460 extending along the profile direction of the moving scroll head section 246 can be set according to actual needs to ensure good coverage of the exhaust valve port P while achieving optimized exhaust performance and ensuring the strength of the scroll.

[0057] As for the interval section 2463, its position and size can be set according to the actual situation—for example, the position and size of the exhaust valve port P, the strength requirements of the scroll portion including the guide groove 2460, etc. The purpose is: firstly, by setting the interval section 2463, the exhaust valve port P can be better covered to improve the compression efficiency; at the same time, the interval section 2463 is conducive to further improving the strength of the scroll portion including the guide groove 2460, especially to reducing the stress concentration at the connection root between the guide groove 2460 and the rest of the scroll portion, as well as the stress concentration at the connection root between the moving scroll head section 246 and the moving scroll end plate 241.

[0058] Furthermore, based on the objective of this invention—ensuring proper coverage of the exhaust valve port P—the recess depth of the guide groove 2460 at various locations can be flexibly set according to the position and size of the exhaust valve port P, for example… Figure 2d As shown, the first groove segment 2461 and the second groove segment 2462 each have different recess depths at different positions; similarly, although the guide groove 2460 has a consistent axial height in this embodiment, the present invention is not limited thereto. Depending on, for example, the strength requirements mentioned above, the guide groove 2460 can be flexibly configured to have different axial heights at different positions. Furthermore, it is understood that the guide groove 2460 can also be multi-segmented in the axial direction, that is, it includes multiple groove segments spaced apart in the axial direction.

[0059] Furthermore, although the guide channel 2460 is configured as a two-section structure in the above embodiments, namely, including a first channel section 2461 and a second channel section 2462 spaced apart from each other, the present invention is not limited thereto. It should be understood that in some cases, the guide channel 2460 may also be configured to include more sections—for example, three sections, four sections, etc.—or be configured as a continuous single section with different recess depths at different positions, as long as it can ensure good coverage of the exhaust valve port P. Moreover, the guide channel 2460 can have any suitable shape depending on the actual situation, and there are no particular limitations on this.

[0060] Although the guide groove 2460 in the above embodiment is configured to extend to the top surface 247 of the moving scroll head section 246, it may also be configured not to extend to the top surface 247 of the moving scroll head section 246. See below for further details. Figures 3a to 3c To describe a second embodiment of the vortex compression mechanism CM according to the present invention, wherein, Figure 3a A perspective view of the moving vortex 24 in the vortex compression mechanism CM according to a second embodiment of the present invention is shown; Figure 3b A side view of the assembled state of the scroll compressor mechanism CM according to a second embodiment of the present invention and its corresponding MM cross-sectional view are shown; and Figure 3cA side view of the assembled state of the scroll compressor mechanism CM according to a second embodiment of the present invention and its corresponding LL cross-sectional view are shown. Figure 3a and Figure 3b As shown, the guide channel 2460 is configured as a continuous single channel segment, and as previously mentioned, the guide channel 2460 in this embodiment preferably extends from the starting point A. The difference is that the guide channel 2460 is configured not to extend to the top surface 247 of the moving vortex head segment 246, thus not occupying the area of ​​the top surface 247. Specifically, as... Figure 3b A cross-sectional view taken at the MM section closer to the moving vortex endplate 241 is shown, illustrating the guide channel 2460; as Figure 3c The diagram shows a cross-sectional view taken at section LL, closer to the top surface 247 of the moving vortex 242. Figure 3c As can be seen, the guide channel 2460 is not visible at the LL section, and the top surface 247 is intact and not occupied by the guide channel 2460. This ensures effective improvement in exhaust efficiency while guaranteeing proper coverage of the exhaust valve port P.

[0061] Of course, it is conceivable that the guide channel 2460 in this embodiment can also be configured as a two-section or more-section configuration similar to that in the first embodiment, the only difference being that the guide channel 2460 in this embodiment does not extend to the top surface 247 of the moving vortex head section 246.

[0062] In addition, the present invention also provides a scroll compressor 100, which includes a scroll compression mechanism CM according to the present invention. The scroll compression mechanism CM may be, for example, the scroll compression mechanism CM in the above embodiments, or may have other possible variations.

[0063] Experimental results show that by improving the guide channel as described above, the working efficiency of the scroll compressor can be effectively increased by about 0.95%, while reducing power loss by about 0.85%, and the capacity of the scroll compressor mechanism CM can be slightly increased by about 0.16%.

[0064] Although exemplary embodiments of the scroll compressor mechanism and scroll compressor according to the present invention have been described in the foregoing embodiments, the present invention is not limited thereto, and various modifications, substitutions and combinations can be made without departing from the scope of protection of the present invention.

[0065] It is evident that by combining or modifying different implementation methods and various technical features in different ways, various different implementation methods can be designed.

[0066] The scroll compressor mechanism and scroll compressor according to a preferred embodiment of the present invention have been described above with reference to specific embodiments. It is understood that the above description is merely exemplary and not restrictive, and various modifications and variations can be conceived by those skilled in the art with reference to the above description without departing from the scope of the invention. These modifications and variations are also included within the scope of protection of the present invention.

Claims

1. A scroll compressor mechanism, comprising: A fixed vortex, the fixed vortex comprising a fixed vortex end plate and a fixed vortex vortex extending from one side of the fixed vortex end plate; as well as A moving vortex, comprising a moving vortex end plate and a moving vortex scroll extending from one side of the moving vortex end plate. The fixed vortex engages with the moving vortex to define, between them, an open intake chamber, at least one closed compression chamber, and an exhaust chamber arranged sequentially from the radially outer to the radially inner side. The fixed vortex end plate includes an exhaust port fluidly connected to the exhaust chamber and at least one exhaust valve port fluidly connected to the compression chamber for early exhaust. The moving vortex includes a moving vortex head section, and the stationary vortex includes a stationary vortex head section. The moving vortex head section and the stationary vortex head section define the exhaust chamber in the following state: the exhaust chamber is in a state where it is about to be in fluid communication with the compression chamber but is not yet in fluid communication with the compression chamber. A concave guide groove is provided on the inner wall of the moving vortex head section to increase the flow rate of fluid from the compression chamber into the exhaust chamber when the moving vortex head section and the stationary vortex head section separate. The moving scroll head section is configured to prevent fluid communication between the compression chamber and the exhaust chamber via the at least one exhaust valve port during operation by covering at least a portion of the at least one exhaust valve port with the top surface of the moving scroll head section.

2. The scroll compression mechanism according to claim 1, characterized in that, At least a portion of the guide groove extends to the top surface of the moving vortex head section.

3. The vortex compression mechanism according to claim 1, characterized in that, The guide groove is positioned at a predetermined distance from the top surface of the moving vortex head section.

4. The vortex compression mechanism according to claim 3, characterized in that, The guide groove is positioned closer to the top surface of the head section of the moving vortex than the distance from the root of the moving vortex to the end plate of the moving vortex.

5. The scroll compression mechanism according to claim 1, characterized in that, The guide groove is configured to extend a predetermined distance toward the inner end of the moving scroll head section from the following starting point: the starting point is the position where the moving scroll head section engages with the fixed scroll head section and is about to begin disengaging from the fixed scroll head section.

6. The vortex compression mechanism according to claim 5, characterized in that, The guide channel is configured to have different recess depths at different locations, and has the maximum recess depth at the starting point.

7. The scroll compression mechanism according to claim 1, characterized in that, The extension height of the guide groove in the axial direction of the vortex compression mechanism is less than or equal to 2 / 3 of the axial height of the moving vortex.

8. The scroll compression mechanism according to claim 1, characterized in that, The recessed depth of the guide groove is less than or equal to 7 / 8 of the thickness of the corresponding section of the moving vortex head section.

9. The scroll compression mechanism according to claim 1, characterized in that, The thickness of the portion of the moving vortex head section with the guide groove is greater than or equal to 0.5 mm.

10. The vortex compression mechanism according to claim 2 or 3, characterized in that, The flow channel is constructed to include at least one section.

11. A scroll compressor, the scroll compressor comprising a scroll compression mechanism according to any one of claims 1-10.

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