WO2014134961A1

WO2014134961A1 - Scroll component and scroll compressor

Info

Publication number: WO2014134961A1
Application number: PCT/CN2013/090720
Authority: WO
Inventors: 孙庆丰
Original assignee: 艾默生环境优化技术(苏州)有限公司
Priority date: 2013-03-04
Filing date: 2013-12-27
Publication date: 2014-09-12

Abstract

Disclosed is a scroll component (60,50) for a scroll compressor, the scroll component comprising: an end plate (64,54); and a helical scroll blade (66,56) formed on the end plate, wherein the scroll blade comprises a near end part and a distant end part in an axial direction, and comprises an inner end part and an outer end part in a circumferential direction, and also comprises a radial inner side face (66E, 56E) and a radial outer side face (66F, 56F), and wherein a protruding part (70) which is suitable for contact with a scroll blade (56,66) of another matching scroll component (50,60) is formed on at least one of the radial inner side face and the radial outer side face. Further disclosed is a scroll compressor comprising the scroll component. This scroll component can effectively reduce the possibility that the scroll blade ruptures, thereby increasing the durability of the scroll component.

Description

WIRELESS COMPONENTS AND VORTEX COMPRESSOR CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims to be assigned to the Chinese Patent Office on March 4, 2013, with the application number 201310068431.7, the invention titled "Vortex Parts and Scroll Compressors" and in 2013 Priority of Chinese Patent Application No. 201320097796.8, entitled "Vortex Parts and Scroll Compressors", filed on March 4, the entire contents of which is hereby incorporated by reference. in. Technical field

The present invention relates to a scroll member and a scroll compressor including the scroll member. Background technique

The content of this section merely provides background information related to the present disclosure, which may not constitute prior art. Scroll compressors typically include a fixed scroll component and an orbiting scroll component. The fixed scroll member and the movable scroll member respectively include an end plate and a substantially spiral scroll blade disposed on the end plate. The scroll vanes of the fixed scroll member and the scroll vanes of the orbiting scroll member are engaged with each other to form a series of compression chambers whose volume gradually decreases from the radially outer side to the radially inner side, thereby realizing compression of the fluid. Generally, the lateral seal between the scroll vanes of the fixed scroll member and the scroll vanes of the orbiting scroll member is achieved by the centrifugal force of the orbiting scroll member. In other words, during operation of the scroll compressor, the orbiting scroll member is driven to rotate relative to the fixed scroll member (ie, the central axis of the orbiting scroll member is rotated about the central axis of the scroll member, but The scroll member itself does not rotate about its central axis, so that the scroll blades of the orbiting scroll member abut against the scroll blades of the fixed scroll member under the centrifugal force, thereby achieving a seal between the two . However, in a state where the scroll compressor is rotated at a high speed, the scroll blades of the orbiting scroll member or the fixed scroll member may be broken due to excessive centrifugal force. Therefore, there is a need for a scroll member that is more durable and a scroll compressor. Summary of the invention

According to an aspect of the invention, a scroll member for a scroll compressor is provided, comprising: an end plate; and a spiral wrap blade formed on the end plate, the wrap blade being on the shaft Included in the direction of a proximal end adjacent the end plate and a distal end remote from the end plate, the scroll blade including an inner end near the substantially central position of the end plate and adjacent in the circumferential direction An outer end portion of the outer peripheral side of the end plate, and the scroll blade includes a radially inner side surface facing a center position of the end plate and a radially outer side surface facing an outer peripheral side of the end plate, wherein At least one of the radially inner side surface and the radially outer side surface is formed with a protrusion adapted to contact the scroll blade of the mating other scroll member, the position of the protrusion portion in the axial direction It is designed such that the distal end of the scroll blade does not come into contact with the scroll blades of the other scroll member during operation of the scroll compressor. According to another aspect of the present invention, a scroll compressor including the above scroll member is provided. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Features and advantages of one or more embodiments of the present invention will be more readily understood from the following description of the accompanying drawings in which: Figure 1 is a longitudinal cross-sectional view of a conventional scroll compressor; 3 is a perspective view showing an orbiting scroll member according to an embodiment of the present invention; and FIG. 4 is a view showing an embodiment of the present invention. FIG. 5A is a partially cutaway perspective view showing a movable scroll member according to an embodiment of the present invention, and FIG. 5B is a partially enlarged view of a portion B of FIG. 5A; FIG. FIG. 7 is a schematic view showing a compression state of an orbiting scroll member and a fixed scroll member according to an embodiment of the present invention; FIG. 8 is a schematic view showing a compression process of an orbiting scroll member and a fixed scroll member according to an embodiment of the present invention; A schematic view showing an extension range of a protrusion (step portion) of an orbiting scroll member according to an embodiment; 9 is a perspective view showing a movable scroll member according to a modification of the embodiment of the present invention; FIG. 10 is a perspective view showing an orbiting scroll member according to another modification of the embodiment of the present invention; and FIG. Is a perspective view showing a fixed scroll member according to still another modification of the embodiment of the present invention. detailed description

The following description of the preferred embodiments is merely exemplary and is in no way limiting of the invention The same reference numerals are used to denote the same parts in the respective drawings, and thus the description of the same components will not be repeated.

First, the basic configuration and principle of a conventional scroll compressor 100 will be described with reference to Figs. As shown in FIGS. 1-2, a conventional scroll compressor 100 generally includes a housing 110, a top cover 112 disposed at the end of the housing 110, a bottom cover 114 disposed at the other end of the housing 110, and a top cover 112 and The partitions 116 between the housings 110 partition the internal space of the compressor into a high pressure side and a low pressure side. A high pressure side is formed between the partition 116 and the top cover 112, and a low pressure side is formed between the partition 116, the casing 110 and the bottom cover 114. An intake joint 118 for sucking a fluid is provided on the low pressure side, and an exhaust joint 119 for discharging the compressed fluid is provided on the high pressure side. A motor 120 composed of a stator 122 and a rotor 124 is disposed in the housing 110. A drive shaft 130 is provided in the rotor 124 to drive a compression mechanism composed of the fixed scroll member 150 and the movable scroll member 160. The movable scroll member 160 includes an end plate 164, a hub portion 162 formed on one side of the end plate, and a spiral blade 166 formed on the other side of the end plate. The fixed scroll member 150 includes an end plate 154, a spiral blade 156 formed on one side of the end plate, and an exhaust port 152 formed at a substantially central position of the end plate. Between the scroll vanes 156 of the fixed scroll member 150 and the scroll vanes 166 of the orbiting scroll member 160, a series of compression chambers C1, C2, and C3 whose volume gradually decreases from the radially outer side to the radially inner side are formed. Wherein, the radially outermost compression chamber C1 is at the suction pressure, and the radially innermost compression chamber C3 is at the exhaust pressure. The intermediate compression chamber C2 is between the suction pressure and the discharge pressure, and is also referred to as a medium pressure chamber. One side of the movable scroll member 160 is supported by an upper portion of the main bearing housing 140 (which constitutes a thrust member), and one end of the drive shaft 130 is supported by a main bearing 144 provided in the main bearing housing 140. One end of the drive shaft 130 is provided with an eccentric crank pin 132, and the eccentric crank pin 132 and the movement An unloading bushing 142 is disposed between the hub portions 162 of the scroll member 160. By the driving of the motor 120, the orbiting scroll member 160 will rotate normally with respect to the fixed scroll member 150 (i.e., the central axis of the orbiting scroll member 160 is rotated about the central axis of the scroll member 150, but the orbiting scroll member 160 is rotated. It does not rotate itself about its central axis) to achieve fluid compression. The above translational rotation is achieved by the cross slip ring 190 disposed between the fixed scroll member 150 and the movable scroll member 160. The fluid compressed by the fixed scroll member 150 and the orbiting scroll member 160 is discharged to the high pressure side through the exhaust port 152. In order to prevent the fluid on the high pressure side from flowing back to the low pressure side via the exhaust port 152 under certain conditions, a check valve or exhaust valve 170 is provided at the exhaust port 152. In order to achieve fluid compression, an effective seal must be provided between the fixed scroll member 150 and the orbiting scroll member 160. In one aspect, the distal end portion of the scroll blade 156 of the fixed scroll member 150 and the end plate 164 of the orbiting scroll member 160 and the distal end portion of the scroll blade 166 of the orbiting scroll member 160 and the fixed scroll member 150 An axial seal is required between the end plates 154. Typically, a back pressure chamber 158 is provided on the opposite side of the end plate 154 of the fixed scroll member 150 from the scroll vanes 156. A seal assembly 180 is disposed in the back pressure chamber 158, and the axial displacement of the seal assembly 180 is limited by the diaphragm 116. The back pressure chamber 158 is in fluid communication with the intermediate pressure chamber C2 through an axially extending through bore (not shown) formed in the end plate 154 to form a force that urges the fixed scroll member 150 toward the orbiting scroll member 160. Since one side of the orbiting scroll member 160 is supported by the upper portion of the main bearing housing 140, the fixed scroll member 150 and the orbiting scroll member 160 can be effectively pressed together by the pressure in the back pressure chamber 158. When the pressure in each compression chamber exceeds a set value, the resultant force generated by the pressure in these compression chambers will exceed the downward pressure provided in the back pressure chamber 158 to cause the fixed scroll member 150 to move upward. At this time, the fluid in the compression chamber will pass through the gap between the distal end portion of the scroll vane 156 of the fixed scroll member 150 and the end plate 164 of the orbiting scroll member 160 and the scroll vane 166 of the orbiting scroll member 160. The gap between the distal end portion and the end plate 154 of the fixed scroll member 150 leaks to the low pressure side to effect unloading, thereby providing axial flexibility to the scroll compressor. On the other hand, a radial seal is also required between the side surface of the scroll vane 156 of the fixed scroll member 150 and the side surface of the scroll vane 166 of the orbiting scroll member 160. This radial sealing between the two is typically achieved by the centrifugal force of the orbiting scroll member 160 during operation and the driving force provided by the drive shaft 130. Specifically, during operation, by the driving of the motor 120, the orbiting scroll member 160 will rotate in translation with respect to the fixed scroll member 150, so that the orbiting scroll member 160 will generate centrifugal force. On the other hand, the eccentric crank pin 132 of the drive shaft 130 also generates a drive that facilitates radial sealing of the fixed scroll member and the orbiting scroll member during rotation. Force component. The scroll vanes 166 of the orbiting scroll member 160 abut against the scroll vanes 156 of the fixed scroll member 150 by means of the above-described centrifugal force and driving force components, thereby achieving radial sealing therebetween. When incompressible substances (such as solid impurities, lubricating oil, and liquid refrigerant) enter the compression chamber and get caught between the scroll vanes 156 and the swirl vanes 166, the scroll vanes 156 and the scroll vanes 166 can be temporarily radially They are separated from each other to allow foreign matter to pass, thus preventing the scroll blades 156 or 166 from being damaged. This ability to be radially separated provides radial flexibility to the scroll compressor, increasing compressor reliability. However, in a state where the scroll compressor is rotated at a high speed, the scroll blades of the orbiting scroll member or the fixed scroll member may be broken due to excessive centrifugal force and driving force. More specifically, as shown in FIG. 2, during the actual operation of the orbiting scroll member 160, due to the interaction of temperature and gas force, etc., in the most unfavorable case, the distal end portion of the scroll blade 166 (in FIG. 2 The upper end) will interact with the joint between the end plate 154 of the fixed scroll member 160 and the scroll vane 156 to withstand the force f, at which point the proximal end of the scroll vane 166 (lower end in Fig. 2) It will withstand the bending moment M l=f*h, where h is the height of the scroll blade 166 in the axial direction. As the rotational speed of the motor 120 increases, the force f also increases, so the scroll blade 166 may break at the proximal end. 3-8 illustrate an example of a configuration in accordance with an embodiment of the present invention. In the configuration according to this embodiment, only the configuration of the scroll vanes 66 of the orbiting scroll member 60 is improved. The configuration of the fixed scroll member 50 (shown in FIG. 4) is the same as that of the fixed scroll member 150 shown in FIGS. 1-2, that is, the fixed scroll member 50 includes the end plate 54 and is formed on the end plate 54. The spiral wrap vanes 56. First, referring to a perspective view of the orbiting scroll member 60 shown in FIG. 3, the orbiting scroll member 60 according to an embodiment of the present invention includes an end plate 64 and a spiral wrap blade 66 formed on the end plate 64. The orbiting scroll member 60 may also include a hub portion 62 formed on the other side of the end plate 64 to receive the eccentric crank pin 132 and the unloading bushing 142 of the drive shaft 130. The scroll blade 66 includes a proximal end portion 66A proximate the end plate 64 and a distal end portion 66B distal from the end plate 64 in an axial direction (ie, a direction parallel to the axis of rotation of the orbiting scroll member 60). The scroll blade 66 includes an inner end portion 66C near a substantially central position of the end plate and an outer end portion 66D near the outer peripheral side of the end plate in the circumferential direction (more precisely, the extending direction of the spiral of the scroll blade 66) . The scroll blade 66 further includes a radially inner side surface 66E facing the center position of the end plate and a radially outer side surface 66F facing the outer peripheral side of the end plate. In the orbiting scroll member 60 according to the present embodiment, the radially inner side surface 66E and the radially outer side The side faces 66F are formed with protrusions 70 adapted to contact the matching scroll members 56 of the other scroll member, such as the fixed scroll member 50, the positions of the protrusions 70 in the axial direction are designed such that the scrolls The distal end portion 66B of the vane 66 does not contact the scroll vanes 56 of the fixed scroll member 50 during operation of the scroll compressor. Or, in other words, the projection 70 is spaced apart from the distal end portion 66B of the scroll vane 66 by a predetermined distance so that the projection 70 can come into contact with the scroll vane 56 of the fixed scroll member during operation of the scroll reducer . In this case, since the distance between the projection 70 and the end plate 64 is smaller than the distance between the distal end portion 66B and the end plate 64, in the case of the same centrifugal force, due to the force arm (from the contact point to the end plate) The distance is reduced, so that the bending moment at the proximal end portion 66A of the scroll blade 66 can also be reduced, thereby making it possible to reduce the possibility of the vortex blade breaking. In a preferred form, the projection 70 forms a step 80 on the radially inner side 66E and the radially outer side 66F. That is, the projections 70 are formed in the range from the proximal end portion 66A to the step portion 80 on the radially inner side surface 66E and the radially outer side surface 66F. More specifically, the thickness of the scroll blade 66 in the radial direction of the first portion 66-1 of the step portion 80 near the proximal end portion 66A side is larger than the near distal end portion 66B of the scroll blade 66 at the step portion 80. The thickness of the second portion 66-2 of the side is in the radial direction, whereby a step portion 80 is formed between the first portion 66-1 having a larger thickness and the second portion 66-2 having a smaller thickness. For example, for ease of processing and manufacturing, the longitudinal sections of the first portion 66-1 and the second portion 66-2 in a plane parallel to the axial direction are both rectangular, as shown in Figs. 5A and 5B. The thickness T of the step portion 80 in the radial direction may be designed such that the end portion 66B of the scroll blade 66 does not contact the vortex of the fixed scroll member 50 under the action of temperature and gas force during operation of the scroll compressor. Blade 56. For example, the thickness T of the step portion 80 in the radial direction may be between 0.01 mm and 0.1 mm. The seal between the second portion 66-2 of the scroll blade 66 of the orbiting scroll member 60 and the scroll blade 56 of the fixed scroll member 50 can be achieved, for example, by a lubricant therebetween, thus the two scroll blades 56 and The compression chamber between 66 can still effectively maintain a seal. In addition, referring to FIG. 8, the extending range of the step portion 80 (shown by a thick black solid line in FIG. 8) in the circumferential direction of the scroll blade 66 (the direction in which the spiral extends) may be designed as follows. For example, the step portion 80 may be designed in a portion of the scroll blade 66 that is relatively easily broken. The magnitude of the centrifugal force and the force state of the scroll blades can be considered at this time. Those skilled in the art will appreciate that the relatively large portion of the radius of curvature of the spiral of the scroll blade 66 is a relatively easily broken portion. In a preferred form, the step portion 80 can be disposed at least radially in outermost contact of the scroll vanes 66 of the driven scroll member 60 with the scroll vanes 56 of the other scroll member (i.e., the fixed scroll member 50). The point P1 extends inwardly within a range of 360 degrees in the circumferential direction. That is, the step portion 80 The extent in the circumferential direction extends from the outermost contact point P1 to the point P2. When the point O in Fig. 8 is taken as the center of the spiral of the scroll blade 66, for the design of the scroll member which is currently common, the spiral of the scroll blade 66 extends at an angle of approximately 720 degrees, then the point P1 to The angle between points P2 is greater than or equal to 360 degrees. The radial direction of the portion of the scroll blade 66 of the orbiting scroll member 60 where the step portion 80 is not formed (i.e., the portion near the center of the orbiting scroll member 60, or in other words, the portion extending inward from the point P2) The thickness may be designed to be the same as the thickness in the radial direction of the first portion 66-1. That is, the portion of the scroll blade 66 where the step portion 80 is not formed is also formed thicker, thereby making it less likely to be broken.

Figure 7 shows the relative position between the orbiting scroll member 60 and the fixed scroll member 50 during operation. In Fig. 7, the position of the fixed scroll member 50 remains unchanged, and the orbiting scroll member 60 is rotated relative to the fixed scroll member 50 as indicated by the arrow in Fig. 7. In the upper left corner view of Fig. 7, the outermost compression chamber C 1 is in an inhaled state. In the lower left corner of Fig. 7, the outermost compression chamber C1 is still in the inhalation state and is about to close. In the lower right corner of Fig. 7, the outermost compression chamber C 1 has been closed. In the figure in the upper right corner of Fig. 7, the next cycle is started and a new outermost compression chamber C1 is formed, and the outermost compression chamber C1 in the previous cycle becomes the middle of the current cycle. Compression chamber C2. As can be seen from the compression cycle shown in Fig. 7, with the above configuration, during the operation of the scroll compressor, the movable scroll member 60 is moved to any position with respect to the fixed scroll member 50, and the outermost compression is performed. In the range of the cavity C1, the scroll blades 66 of the orbiting scroll member 60 can always come into contact with the scroll blades 56 of the fixed scroll member 50 through the step portion 80 thereon.

The design of the height of the step portion 80 from the axial direction of the end plate 64 (hereinafter referred to as the height of the step portion 80) will be described below with reference to FIG. In a preferred manner, the height H of the step portion 80 may be between 40% and 60% of the height h (see Fig. 2) of the scroll vanes 66 of the orbiting scroll member 60 in the axial direction. More preferably, the height H of the step portion 80 may be approximately 50% of the height h of the scroll blade 66. As shown in FIG. 6, when the height of the step portion 80 is H = 0.5 h and when the step portion 80 of the scroll blade 66 comes into contact with the scroll blade 56 of the fixed scroll member 50 and the reaction force is F, The bending moment M2 at the proximal end portion 66A of the scroll blade 66 is F*H = 0.5 Fh. Since the forces f and F are substantially primarily related to the centrifugal force (i.e., rotational speed) of the orbiting scroll member 60, it is considered that f and F are substantially the same after excluding other interference factors. Thus, when the height H of the step portion 80 is designed to be 50% of the height h of the scroll blade 66, the bending moment M2 at the proximal end portion 66A of the scroll blade 66 is only the existing design without the step portion 80. The bending moment M1 (see Fig. 2) at the proximal end portion of the scroll blade is 50%, whereby the scroll blade 66 according to the embodiment of the present invention is less likely to be broken under the same high rotation speed condition. On the other hand, considering the overall strength of the scroll vanes 66 and the overall operating efficiency of the compressor, the height H of the step portion 80 is generally designed to be in the vortex The height of the rotor blade 66 is between 10% and 90%.

The orbiting scroll member 60 of the above configuration may be manufactured by, for example, a die casting process, or may be formed by milling, for example, by using an existing orbiting scroll member, and thus the production of the orbiting scroll member constructed in accordance with the present invention The process is still relatively simple and the manufacturing is lower. In addition, as described above, with the movable scroll member constructed according to the present invention, the bending moment at the proximal end portion of the scroll blade can be effectively reduced, thereby effectively reducing the possibility of the vortex blade rupture, thereby improving the vortex The durability of the rotating parts. On the other hand, since the gap between the second portion of the scroll blade having a small thickness of the orbiting scroll member and the scroll blade of the fixed scroll member can be effectively sealed by the lubricant, the compression efficiency of the compressor is not Will decrease.

An embodiment of the present invention has been described above, but those skilled in the art will appreciate that various modifications can be made to the above-described embodiments.

For example, in the above embodiment, the thickness of the portion of the scroll blade 66 of the orbiting scroll member 60 where the step portion is not formed (the portion near the center of the movable scroll member) is designed to have a relatively large thickness. The thickness of the first portion 66-1 in the radial direction is the same, but the thickness of the portion of the scroll blade 66 of the orbiting scroll member 60 in which the step portion is not formed may be the thickness of the second portion having a relatively small thickness. The thickness of the 66-2 in the radial direction is the same.

For example, in the above-described embodiment of the asymmetrically designed scroll member, the step portion 90 is provided at least at the radially outermost side of the scroll blade 66 of the driven scroll member 60 and the scroll blade 56 of the other scroll member 50. The contact point P1 extends inwardly in the circumferential direction by 360 degrees, but in the symmetrical design of the scroll member shown in FIG. 9, the step portion 80 may be provided at least at the scroll blade 66 of the driven scroll member 60. The outer end portion 66D extends inwardly within a range of 360 degrees in the circumferential direction. In this case, the thickness of the portion of the scroll blade 66 of the movable scroll member 60 in which the step portion is not formed may be designed to have the same thickness as the radial direction of the first portion 66-1, or It may be designed to be the same thickness as the radial direction of the second portion 66-2.

For example, in another variation, the step portion 80 may be disposed within the range from the outer end portion 66D of the scroll blade 66 of the driven scroll member 60 to the inner end portion 66C, as shown in FIG.

For example, in the above embodiment, the projection 70 formed with the step portion 80 is formed in the radial direction of the scroll blade 66, and the surface 66 is formed on the radially outer side surface 66F, but is formed on the step side surface 66F.

For example, in the above embodiment, the protrusion 70 in which the step portion 80 is formed is formed on the orbiting scroll member 60, but the protrusion portion 70 in which the step portion 80 is formed may also form a fixed scroll member. 50, as shown in Figure 11. In this case, the fixed scroll member 50 may include an end plate 54 and a spiral wrap vane 56 formed on the end plate 54. The scroll vanes 56 include a proximal end portion 56A proximate the end plate 54 and a distal end portion 56B distal from the end plate 54 in an axial direction (ie, a direction parallel to the central axis of the fixed scroll member 50). The scroll blade 56 includes an inner end portion 56C near a substantially central position of the end plate and an outer end portion 56D near the outer peripheral side of the end plate in the circumferential direction (more precisely, the extending direction of the spiral of the scroll blade 56) . The scroll blade 56 further includes a radially inner side surface 56E facing the center position of the end plate and a radially outer side surface 56F facing the outer peripheral side of the end plate. In Fig. 11, both the radially inner side surface 56E and the radially outer side surface 56F are formed with projections 70 adapted to contact the corresponding scroll member of the other scroll member, such as the orbiting scroll member 60. In particular, the projection 70 forms a step portion 80 on the radially inner side surface 56E and the radially outer side surface 56F. Parameters such as the thickness, height, and circumferential extent of the step portion 80, as well as other variations, can be determined with reference to the configuration and variations of the orbiting scroll member 60 described above.

For example, in the above embodiment, the protrusion 70 is configured in the form of a step portion 80, but the protrusion 70 may be configured in other forms, for example, the protrusion 70 may be configured to be formed on the radially inner side surface 66E of the scroll blade 66. And/or a raised portion on the radially outer side 66F. In this case, the ridge portion may be provided at least in a range extending 360 degrees inward from the radially outermost contact point of the scroll blade of the scroll member and the scroll blade of the other scroll member in the circumferential direction. . The ridge height of the ridge may be between 0.01 mm and 0.1 mm. The height of the ridge portion in the axial direction from the end plate may be between 10% and 90% of the height in the axial direction of the scroll blade of the scroll member.

The embodiments and various modifications of the present invention have been described above, and the basic concepts of the present invention are summarized as follows:

According to a first aspect of the present invention, a scroll member for a scroll compressor is provided, comprising: an end plate; and a spiral wrap blade formed on the end plate, the wrap blade The axial direction includes a proximal end portion adjacent the end plate and a distal end portion remote from the end plate, the scroll blade including an inner end portion in a circumferential direction near a substantially central position of the end plate and An outer end portion on an outer peripheral side of the end plate, and the scroll blade includes a radially inner side surface facing a center position of the end plate and a radially outer side surface facing an outer peripheral side of the end plate, wherein At least one of the radially inner side surface and the radially outer side surface may be formed with a protrusion adapted to contact a corresponding scroll blade of another scroll member, the protrusion being axially oriented The position is such that the distal end of the scroll vane does not contact the scroll vanes of the other scroll member during operation of the scroll compressor.

According to a second aspect of the present invention, the protrusion may be configured to be on the radially inner side and/or Or a step portion is formed on the radially outer side surface.

According to a third aspect of the invention, the thickness of the scroll blade of the scroll member in the radial direction of the first portion of the step portion near the proximal end portion may be larger than the vortex of the scroll member The thickness of the spiral blade in the radial direction of the second portion of the step portion near the distal end portion.

According to a fourth aspect of the invention, the step portion may be provided at least in a circumferential direction from a radially outermost contact point of the scroll blade of the scroll member and the scroll blade of the other scroll member The inside extends within a range of 360 degrees.

According to the fifth aspect of the invention, the thickness of the portion of the scroll blade of the scroll member where the step portion is not formed may be the same as the thickness of the first portion in the radial direction.

According to the sixth aspect of the invention, the thickness of the portion of the scroll blade of the scroll member where the step portion is not formed may be the same as the thickness of the second portion in the radial direction.

According to a seventh aspect of the invention, the step portion may be provided at least in a range extending 360 degrees inward from the outer end portion of the scroll blade of the scroll member in the circumferential direction.

According to the eighth aspect of the invention, the thickness of the portion of the scroll blade of the scroll member where the step portion is not formed may be the same as the thickness of the first portion in the radial direction.

According to the ninth aspect of the invention, the thickness of the portion of the scroll blade of the scroll member where the step portion is not formed may be the same as the thickness of the second portion in the radial direction.

According to a tenth aspect of the invention, the step portion may be provided in a range from an outer end portion of the scroll blade of the scroll member to the inner end portion.

According to an eleventh aspect of the present invention, the thickness of the step portion in the radial direction may be

Between 0.01mm and 0.1mm.

According to a twelfth aspect of the invention, the height of the step portion from the axial direction of the end plate may be between 10% and 90% of the height of the scroll blade in the axial direction of the scroll member .

According to a thirteenth aspect of the invention, the height of the step portion may be between 40% and 60% of the height of the scroll blade of the scroll member.

According to a fourteenth aspect of the invention, the height of the step portion may be the scroll member 50% of the height of the vortex blade.

According to a fifteenth aspect of the invention, the longitudinal section of the first portion and the second portion in a plane parallel to the axial direction may be both rectangular.

According to a sixteenth aspect of the invention, the protrusion portion may be formed on both the radially inner side surface and the radially outer side surface.

According to a seventeenth aspect of the invention, the scroll member may be a movable scroll member, and the other scroll member may be a fixed scroll member.

According to an eighteenth aspect of the invention, the scroll member is a fixed scroll member, and the other scroll member is a movable scroll member.

According to a nineteenth aspect of the invention, the scroll member may be an asymmetrically designed scroll member.

According to a twentieth aspect of the invention, the scroll member may be a vortex member of a symmetrical design. According to a twenty first aspect of the invention, the protrusion may be formed as a ridge on the radially inner side surface and/or the radially outer side surface.

According to a twenty-second aspect of the invention, the ridge portion may be disposed at least in a circumferential direction from a radially outermost contact point of the scroll blade of the scroll member and the scroll blade of the other scroll member The direction extends inward by 360 degrees.

According to a twenty-third aspect of the invention, the ridge height of the ridge portion may be between 0.01 mm and 0.1 mm.

According to a twenty-fourth aspect of the invention, the height of the ridge portion from the axial direction of the end plate may be 10% to 90% of the height of the scroll blade in the axial direction of the scroll member. between.

According to a twenty-fifth aspect of the invention, there is provided a scroll compressor comprising the above scroll member.

Although the various embodiments of the present invention have been described in detail herein, it is understood that the invention is not limited to The skilled person implements other variations and variants. All such variations and modifications are intended to fall within the scope of the invention. Moreover, all of the components described herein can be replaced by other technically equivalent components.

Claims

claims

1. A scroll component (60, 50) for a scroll compressor, including:

End plates (64, 54); and

Spiral vortex blades (66, 56) are formed on the end plates (64, 54). The vortex blades (66, 56) include those close to the end plates (64, 54) in the axial direction. ) and the distal end portion (66B, 56B) away from the end plate (64, 54). The scroll blades (66, 56) include those close to the end plate (66, 56) in the circumferential direction. The inner end (66C, 56C) at the substantially central position of the end plate (64, 54) and the outer end (66D, 56D) close to the outer peripheral side of the end plate (64, 54), and the vortex The blades (66, 56) include a radially inner side (66E, 56E) facing the center position of the end plate (64, 54) and a radial outer side (66E, 56E) facing the outer peripheral side of the end plate (64, 54). 66F, 56F), wherein another scroll component (50) adapted to match is formed on at least one of the radially inner side (66E, 56E) and the radial outer side (66F, 56F) , The protrusion (70) in contact with the scroll blades (56, 66) of 60), the position of the protrusion (70) in the axial direction is designed such that the distal end of the scroll blade (66, 56) The portions (66B, 56B) will not come into contact with the scroll blades (56, 66) of the other scroll component (50, 60) during operation of the scroll compressor.

2. The scroll component of claim 1, wherein the protrusion (70) is configured on the radially inner side (66E, 56E) and/or the radially outer side (66F, 56F) Form a step part (80).

3. The scroll component according to claim 2, wherein the scroll blades (66, 56) of the scroll component (60, 50) are located near the proximal end portion (80) of the step portion (80). 66A, 56A) The thickness of the first part (66-1, 56-1) on one side in the radial direction is greater than that of the scroll blade (66, 56) of the scroll component (60, 50) located at the step portion The thickness of the second part (66-2, 56-2) of the (80) near the distal end portion (66B, 56B) in the radial direction.

4. The scroll member according to claim 3, wherein the step portion (80) is provided at least between the scroll blade (66, 56) of the scroll member (60, 50) and the other scroll member. rotating parts (50, The radially outermost contact point (P1) of the scroll blades (56, 66) of 60) extends inward within a range of 360 degrees in the circumferential direction.

5. The scroll member according to claim 4, wherein a thickness in the radial direction of the portion of the scroll blade (66, 56) of the scroll member (60, 50) where the step portion is not formed is equal to The thickness of the first part (66-1, 56-1) in the radial direction is the same.

6. The scroll member according to claim 4, wherein a thickness in the radial direction of the portion of the scroll blade (66, 56) of the scroll member (60, 50) where the step portion is not formed is equal to The thickness of the second part (66-2, 56-2) in the radial direction is the same.

7. The scroll component according to claim 3, wherein the step portion (80) is provided at least from an outer end portion (66D) of the scroll blade (66, 56) of the scroll component (60, 50). , 56D) extending inward within a range of 360 degrees along the circumferential direction.

8. The scroll member according to claim 7, wherein a thickness in the radial direction of the portion of the scroll blade (66, 56) of the scroll member (60, 50) where the step portion is not formed is equal to The thickness of the first part (66-1, 56-1) in the radial direction is the same.

9. The scroll member according to claim 7, wherein a thickness in the radial direction of the portion of the scroll blade (66, 56) of the scroll member (60, 50) where the step portion is not formed is equal to The thickness of the second part (66-2, 56-2) in the radial direction is the same.

10. The scroll component according to claim 3, wherein the step portion (80) is provided from the outer end (66, 56) of the scroll blade (66, 56) of the scroll component (60, 50) 66D, 56D) to the inner end (66C, 56C).

11. The scroll component according to claim 3, wherein the thickness (T) of the step portion (80) in the radial direction is between 0.01 mm and 0.1 mm.

12. The scroll component according to claim 3, wherein the height (H) of the step portion (80) from the end plate (64, 54) in the axial direction is within the range of the scroll component (60, 54). 50) The height (h) of the scroll blades (66, 56) in the axial direction is between 10% and 90%.

13. The scroll component according to claim 12, wherein the height (H) of the step portion (80) is equal to the height (h) of the scroll blades (66, 56) of the scroll component (60, 50). ) between 40% and 60%.

14. The scroll component according to claim 13, wherein the height (H) of the step portion (80) is the height (h) of the scroll blades (66, 56) of the scroll component (60, 50). ) 50%.

15. The scroll member according to claim 3, wherein the first part (66-1, 56-1) and the second part (66-2, 56-2) are parallel to the axial direction. The longitudinal sections on the plane are all rectangular.

16. The scroll member according to any one of claims 1 to 15, wherein a scroll element is formed on both the radially inner side (66E, 56E) and the radially outer side (66F, 56F). The protrusion (70).

17. The scroll component of claim 16, wherein the scroll component is an orbiting scroll component (60) and the other scroll component is a fixed scroll component (50).

18. The scroll component of claim 16, wherein the scroll component is a fixed scroll component (50) and the other scroll component is an orbiting scroll component (60).

19. The scroll component according to claim 16, wherein the scroll component (60, 50) is an asymmetrically designed scroll component.

20. The scroll component according to claim 16, wherein the scroll component (60, 50) is a symmetrically designed scroll component.

21. The scroll member according to claim 1, wherein the protrusion (70) is formed on the radially inner side (66E, 56E) and/or the radial outer side (66F, 56F). The bulge.

22. The scroll member according to claim 21, wherein the ridge is provided at least at a radially outermost contact point from a scroll vane of the scroll member to a scroll vane of the other scroll member. Extending 360 degrees inward along the circumferential direction.

23. The scroll member according to claim 21, wherein the ridge height of the ridge is between

Between 0.01mm and 0.1mm.

24. The scroll component according to any one of claims 21 to 23, wherein the axial height of the ridge from the end plate is in the axial direction of the scroll blades of the scroll component. between 10% and 90% of the height.

25. A scroll compressor comprising the scroll component according to any one of claims 1-24.