TWI680234B - Scroll structure for compressor - Google Patents

Abstract

The invention relates to a scroll structure of a compressor, which comprises a fixed and orbiting scroll. The fixed scroll includes a fixed scroll base and a fixed scroll blade, and the fixed scroll base has a fluid outlet. The orbiting scroll includes an orbiting scroll base and an orbiting scroll blade. The scroll structure has at least one pre-cut portion, which defines the fixed scroll tip portion of the fixed scroll blade and the orbiting scroll tip portion of the orbiting scroll blade in contact with each other during the compressor exhaust phase. The outer surface, the outer surface of the orbiting scroll tip, the outer surface of the fixed scroll base, and the outer surface of the orbiting scroll base collectively surround the central area. The fluid outlet is located in the central area. The pre-cut portion is also located in the central region, and is located on at least one of the surfaces adjacent to the fixed scroll and the orbiting scroll.

Description

Scroll structure of compressor

The invention relates to a scroll structure of a compressor, in particular to a scroll structure having at least one pre-cut portion.

Compressor is a device that introduces working fluid into a closed space and increases the internal pressure by compressing the volume of space dispersed by the original working fluid, thereby converting mechanical energy into pressure energy. Common applications include air conditioning and refrigeration Cycle, provide industrial drive power, etc. According to the way it compresses the working fluid, it can be divided into reciprocating, rotary, spiral, scroll compressors and so on. Among them, since scroll compressors have advantages such as high efficiency, energy saving, and low noise, their applications are increasing.

The compression method of the scroll compressor is formed by staggering two scroll bodies, one of which is a fixed fixed scroll, and the other is orbiting relative to the fixed scroll. Orbiting scroll (Orbiting Scroll), by orbiting scroll to the fixed scroll, orbiting scroll, the compression chamber between the two volume changes, thereby guiding, compressing and discharging working fluid.

However, the conventional scroll compressor still needs to be improved. The reason is that during the process of compressing the working fluid, the working fluid will be gradually compressed into a high temperature and high pressure state. This phenomenon is most obvious at the outlet of the fluid with the greatest compression force, that is, the temperature rise of the working fluid is the most severe, which will cause The fixed scroll and the orbiting scroll have a significant thermal expansion phenomenon near them, which causes unexpected interference and friction between the two scrolls. As a result, such interference and friction will generate frictional noise and frictional heat to increase the internal temperature again, which not only consumes the overall operating kinetic energy, but also reduces the operating efficiency. Moreover, it also wears or damages the fixed scroll and the orbiting vortex. volume.

In view of this, the present invention provides a scroll structure of a compressor, which can solve the problems of interference, friction and the extension of the scroll of a traditional scroll compressor during operation.

The scroll structure of a compressor disclosed in the present invention includes a fixed scroll and an orbiting scroll. The fixed scroll includes a fixed scroll base and a fixed scroll blade erected on one side of the fixed scroll base, wherein the fixed scroll base has a fluid outlet. The orbiting scroll includes an orbiting scroll base and an orbiting scroll blade erected on the orbiting scroll base. The orbiting scroll can be relatively fixedly wound. The scroll structure has at least one pre-cut portion, and defines one of the fixed scroll blades and the fixed scroll tip portion and one of the orbiting scroll blades are in contact with each other during the compressor exhaust phase. The outer surface of the scroll tip portion, the outer surface of the orbiting scroll tip portion, the outer surface of the fixed scroll base, and the outer surface of the orbiting scroll base collectively surround a central region, where the fluid outlets are located at In the central area, at least one pre-cut portion is located in the central area and on at least one of adjacent surfaces of the fixed scroll and the orbiting scroll.

As the scroll structure disclosed in the present invention, at least one pre-cut portion is located at the center surrounded by the outer surface of the structure such as the fixed scroll base, the fixed scroll tip portion, the orbiting scroll base, the orbiting scroll tip portion, and the like. Area, and the pre-cut portion is located on at least one of the adjacent surfaces of the fixed scroll and the orbiting scroll, that is, the pre-cut portion is designed in an area where the internal temperature is high during the operation of the compressor, and thus helps In order to avoid the problems of interference and friction caused by the thermal expansion of the fixed scroll orbiting scroll and the orbiting scroll due to the high temperature of operation, the problems of noise and temperature rise due to friction between the fixed scroll and the orbiting scroll can be avoided. Helps maintain the low noise and high operating efficiency characteristics of the scroll structure, and helps extend the service life.

The above description of the disclosure of the present invention and the description of the following embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide a further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail in the following embodiments. The content is sufficient to enable any person skilled in the art to understand and implement the technical content of the present invention, and according to the content disclosed in this specification, the scope of patent applications and the drawings. Anyone skilled in the art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention in any way.

In addition, the embodiments of the present invention will be disclosed in the following drawings. For the sake of clear description, many practical details will be described in the following description. It should be understood, however, that these practical details are not intended to limit the invention.

In addition, for the purpose of tidy drawing, some conventional structures and components may be shown in a simple and schematic way in the drawing. In addition, some of the features in the drawings in this case may be slightly enlarged or changed in proportion or size to achieve the purpose of facilitating understanding and viewing the technical features of the present invention, but this is not intended to limit the present invention. The actual size and specifications of the product manufactured according to the content disclosed in the present invention should be adjusted according to the needs at the time of production, the characteristics of the product itself, and the content disclosed in the following of the present invention. At the same time, for easy viewing of the drawings, the reference coordinate axis is also attached to the drawings.

In addition, in the following, terms such as "end", "department", "section", "area", and "department" may be used to describe specific elements and structures or specific technical features on or between them, but these elements And structure is not limited by these terms. In the following, the term "and / or" may also be used, which means a combination comprising one or all of one or more of the listed related elements or structures. Terms such as "substantially", "substantially" and "approximately" may also be used in the following, and when used in conjunction with a range of size, concentration, temperature or other physical or chemical properties or characteristics, it is intended to cover the Deviations in the upper and / or lower limits of the range of properties or characteristics, or allowable deviations caused by manufacturing tolerances or analysis, can still achieve the desired effect.

Moreover, unless otherwise defined, all words or terms used herein, including technical and scientific words and terms, have their usual meanings, and their meanings can be understood by those familiar with this technical field. Furthermore, the above definitions of words or terms should be interpreted in this specification as having a meaning consistent with the technical field related to the present invention. Unless specifically defined, these words or terms shall not be interpreted as being too idealistic or formal.

Please refer to FIGS. 1 to 4. FIG. 1 is an exploded view of a scroll compressor and a scroll structure according to a first embodiment of the present invention. FIG. 2 is a schematic perspective view of the fixed scroll of FIG. 1. FIG. 1 is a schematic perspective view of the orbiting scroll in FIG. 1, and FIG. 4 is an assembly side sectional view of the scroll structure in the first embodiment of the present invention.

This embodiment proposes a scroll structure 1a, which is suitable for being installed in a casing (not numbered) as shown in the figure to form a compressor 9 together with it. The compressor 9 is a scroll compressor (Scroll Compressor), which can be, but is not limited to, a scroll compressor without oil or oil. However, it should be stated that the scroll structure of other subsequent embodiments of the present invention is also suitable for being installed in the aforementioned casing to form a scroll compressor, but the present invention is not installed in the aforementioned compressor in a scroll structure. 9 or other compressor housing is limited. In addition, it can be understood that the casing of the compressor 9 may contain other components and structures required to realize the driving scroll structure 1a and complete compression operation, but the present invention is not limited thereto. In addition, the scroll structure 1a or the scroll structure of other embodiments of the present invention can be adaptively adjusted according to the specifications of the compressor 9 or other compressors such as size or assembly method, and the present invention is not limited thereto. Hereinafter, the scroll structure 1a will be described first.

In this embodiment, the scroll structure 1a includes a fixed scroll 10a and an orbiting scroll 20a. The orbiting scroll 20a can be movably disposed on one side of the fixed scroll 10a so as to revolve relative to the fixed scroll 10a. For example, the orbiting scroll 20a can be rotated relative to the fixed scroll 10a in an eccentric manner.

The fixed scroll 10a includes a fixed scroll base 110a and a fixed scroll blade 120a. The fixed scroll base 110a has an inner surface 1101a and an outer surface 1102a of the fixed scroll base facing away from each other. The shape of the fixed scroll blade 120a is a spiral plate, which stands on one side of the fixed scroll base 110a. As shown in the figure, the fixed scroll blade 120a stands on the fixed scroll base of the fixed scroll base 110a. Seat inner surface 1101a.

In addition, the fixed scroll base 110a also has at least one fluid suction port 1103 and a fluid discharge port 1104. The fluid suction port 1103 is located on the fixed scroll base 110a and is closer to the outer circle of the fixed scroll blade 120a. The number of the fluid suction port 1103 can be, but is not limited to, one or more, and can be connected with a working fluid (not shown, but not limited to). It is a source of gaseous, liquid or gas-liquid mixed state with flow characteristics), so that the working fluid can be injected into the scroll structure 1a. The fluid discharge port 1104 is located on the fixed scroll base 110a closer to the center of the fixed scroll blade 120a, and is suitable for discharging the working fluid entering the scroll structure 1a.

Looking further, the fixed scroll blade 120a has a fixed scroll tip portion 121a, which refers to a portion of the fixed scroll blade 120a closer to its center (or a fluid closer to or surrounding the fixed scroll blade 120a). Part of the outlet 1104). In addition, the fixed scroll blade 120a also has a fixed scroll blade inner surface 1201a, a fixed scroll blade outer surface 1202a, and a fixed scroll blade top surface 1203a. The inner surface of the fixed scroll blade 1201a refers to the surface of the fixed scroll blade 120a facing the fluid outlet 1104, and the outer surface of the fixed scroll blade 1202a refers to the other side of the fixed scroll blade 120a facing away from the fluid outlet 1104. The top surface 1203a of the fixed scroll blade refers to the surface of the fixed scroll blade 120a that is between the fixed scroll blade inner surface 1201a and the fixed scroll blade outer surface 1202a and faces away from the fixed scroll base 110a (or Toward the surface of the orbiting scroll 20a). In other embodiments, the top surface 1203a of the fixed scroll blade 120a of the fixed scroll blade 120a may be designed to fill a groove (not shown) of the wear-resistant material, but the invention is not limited thereto.

In addition, the fixed scroll base 110a also has a fixed scroll root 111a, which is located on the inner surface 1101a of the fixed scroll base 110a of the fixed scroll base 110a, which means that the fixed scroll base 110a is close to the fixed scroll blade 120a. The portion at the center (or the portion surrounding the fluid outlet 1104 on the fixed scroll base 110a). In this embodiment or other embodiments, the fixed scroll root portion 111a of the fixed scroll base 110a refers to the fixed scroll of the fixed scroll base 110a near the center of the fixed scroll blade 120a and by the fixed scroll blade 120a. The portion surrounded by the inner surface 1201a of the rolling blade, and the fluid outlet 1104 is located in the range of the fixed scroll root portion 111a.

On the other hand, the orbiting scroll 20a includes an orbiting scroll base 210a and an orbiting scroll blade 220a. The orbiting scroll base 210a has an inner surface 2101a and an outer surface 2102a of the orbiting scroll base facing away from each other. It can be seen from FIGS. 1 to 3 that the inner surface 2101a of the orbiting scroll base 210a of the orbiting scroll base 210a and the inner surface 1101a of the fixed scroll base of the fixed scroll base 110a face each other. The shape of the orbiting scroll blade 220a is a spiral plate, which stands on one side of the orbiting scroll base 210a. As shown in the figure, the orbiting scroll blade 220a stands on the orbiting of the orbiting scroll base 210a. The inner surface 2101a of the movable scroll base is correspondingly disposed in a spiral space surrounded by the fixed scroll blade 120a. In this configuration, the inner surface of fixed scroll base 1101a of fixed scroll base 110a, the fixed scroll blade 120a, the inner surface of orbiting scroll base 2101a of orbiting scroll base 210a, and the orbiting scroll blade 220a collectively surrounds a compression chamber S (as shown in FIG. 4). In operation, the orbiting scroll 20a can orbit the fixed scroll 10a, so that the orbiting scroll blade 220a orbits the fixed scroll blade 120a to continuously change the shape of the compression chamber S, and then continuously squeeze The working fluid entering the compression chamber S from the fluid suction port 1103 is guided and pushed to the fluid discharge port 1104 and discharged.

In addition, the orbiting scroll blade 220a has an orbiting scroll tip portion 221a, which refers to a portion of the orbiting scroll blade 220a closer to the center thereof (or a portion of the orbiting scroll blade 220a closer to the fluid outlet port). 1104 or a portion closer to one end of the fixed scroll tip 121a). In addition, the orbiting scroll blade 220a also has an inner surface 2201a of the orbiting scroll blade, an outer surface 2202a of the orbiting scroll blade, and a top surface 2203a of the orbiting scroll blade. The orbiting scroll blade inner surface 2201a refers to the side surface of the orbiting scroll blade 220a facing the fluid outlet 1104, and the orbiting scroll blade outer surface 2202a refers to the orbiting scroll blade 220a facing away from the fluid outlet 1104. And the top surface 2203a of the orbiting scroll blade refers to the orbiting scroll blade 220a between the inner surface of the orbiting scroll blade 2201a and the outer surface of the orbiting scroll blade 2202a and orbiting away from the back The surface of the scroll base 210a (or the surface facing the fixed scroll 10a). In other embodiments, the top surface 2203a of the orbiting scroll blade 220a of the orbiting scroll blade 220a may be designed to fill a groove of a wear-resistant material, but the present invention is not limited thereto.

In addition, the orbiting scroll base 210a also has a orbiting scroll base 211a, which is located on the inner surface 2101a of the orbiting scroll base 210a of the orbiting scroll base 210a, which means that the orbiting scroll base 210a approaches The portion at the center of the orbiting scroll blade 220a (or the portion corresponding to the fluid outlet 1104 or the fixed scroll root portion 111a of the fixed scroll base 110a in the axial direction of the orbiting scroll base 210a).

Here, please refer to FIGS. 5 to 6, which are simulation data diagrams of the thermal expansion and deformation of the fixed scroll 10 a and the orbiting scroll 20 a according to the first embodiment of the present invention, respectively, indicating the application of the scroll structure 1 a of this embodiment. In operation, the scroll compressor 9 of the fixed scroll 10a and the orbiting scroll 20a are thermally deformed in the axial direction during the fixed scroll. As can be seen from the figure, the fixed scroll blade 120a of the fixed scroll 10a and the orbiting scroll blade 220a of the orbiting scroll 20a generate a sharp axial deformation near the interior (that is, near the center of the fluid outlet 1104). The reason is that as described above, when the orbiting scroll 20a is orbited to the exhaust phase relative to the fixed scroll 10a to discharge the working fluid from the fluid discharge port 1104, a very high pressure is generated to make the working fluid The temperature rises sharply, resulting in very significant thermal expansion of the fixed scroll blades 120a and the orbiting scroll blades 220a close to them. The exhaust phase refers to a phase in which the orbiting scroll is rotated relative to the fixed scroll to the stage where the working fluid is most strongly compressed at the fluid outlet. At this time, the tip of the orbiting scroll is Its leading edge contacts the inner surface of the fixed scroll. The tip of the fixed scroll's fixed scroll will contact the inner surface of the orbiting scroll with its leading edge, and the working fluid will be squeezed under high pressure. It is discharged from the fluid discharge port between the orbiting scroll tip portion and the fixed scroll tip portion. From this, it can be understood that the fixed scroll tip and orbiting scroll tip described in this embodiment and the other embodiments mean that the fixed scroll and orbiting scroll will produce the following during operation. Part of the aforementioned obvious thermal expansion phenomenon.

In response to this phenomenon, in this embodiment and other embodiments, at least one pre-cut portion may be designed on the scroll structure, which is located on at least one of the fixed scroll and the orbiting scroll. The pre-cut portion refers to a portion that is removed in advance on at least one of the fixed scroll and the orbiting scroll to compensate for thermal expansion and deformation caused by high temperature, and the pre-cut portion can be moved by cutting or etching. Except for a part of the fixed scroll and / or orbiting scroll, or other methods that can obtain substantially the same structure on the fixed scroll and / or orbiting scroll, the present invention is not a way of designing a pre-cut portion. Limited. In this embodiment, the scroll structure 1 a has a pre-cut portion Da1 (see FIG. 2) and a pre-cut portion Da2 (see FIG. 3), which are respectively located on the fixed scroll blade 120 a and the orbiting scroll blade 220 a. However, it should be stated that this embodiment is only one example of the position of the pre-cut portion, and the present invention is not limited thereto.

In detail, as shown in FIG. 7 (shown in a partially enlarged view of FIG. 4), the pre-cut portions Da1 and Da2 are located in a central region C1. The central area C1 refers to the fixed scroll by the fixed scroll base 110a when the fixed scroll tip portion 121a is in contact with the leading edge of the orbiting scroll tip portion 221a while the compressor is in the exhaust phase. The outer surface of the base 1102a, the outer surface of the fixed scroll blade 1202a (that is, the outer surface of the fixed scroll tip 121a) at the fixed scroll tip portion 121a, the outer surface of the orbiting scroll blade at the orbiting scroll tip portion 221a A surface surrounded by the surface 2202a (that is, the outer surface of the orbiting scroll tip portion 221a) and the outer surface 2102a of the orbiting scroll base 210a. It can be understood that the central region C1 is intended to cover a region where the internal temperature is high when the compressor is running. The aforementioned pre-cut portions Da1 and Da2 are located in the defined central region C1, and the fluid outlet 1104 is also located in the central region C1.

Looking further, the pre-cut portion Da1 is located on the top surface 1203a of the fixed scroll blade at the fixed scroll tip portion 121a of the fixed scroll blade 120a (that is, the top surface of the fixed scroll tip portion 121a), so that the fixed scroll tip The portion 121a has a stepped shape when viewed from the side.

The axial depth of the pre-cut portion Da1 on the fixed scroll tip portion 121a is related to the amount of thermal expansion and deformation in the height direction of the fixed scroll tip portion 121a after being heated. The "axial direction" and the "height direction" mentioned here refer to directions that are horizontal to the orbit of the orbiting scroll 20a. For this purpose, first obtain the coefficient of thermal expansion (CTE) of the fixed scroll 10a as αf, the fixed scroll 10a has a fixed scroll height Lf, and the internal environment of the scroll structure 1a (or referred to as the fixed scroll The temperature rise of the compression chamber S) between 10a and the orbiting scroll 20a after the scroll structure 1a has been stationary for a predetermined time is ΔT (that is, the temperature difference). In this embodiment, the axial depth of the pre-cut portion Da1 on the fixed scroll tip portion 121a is substantially proportional to Lf × αf × ΔT, that is, the axial depth of the pre-cut portion Da1 on the fixed scroll tip portion 121 a is It is determined by the amount of thermal expansion and deformation in the height direction of the fixed scroll tip portion 121a after being heated, but the present invention is not limited to the actual ratio between the axial depth of the pre-cut portion and Lf × αf × ΔT, and the ratio should be Adjust according to actual needs.

It should be added that the aforementioned material thermal expansion coefficient refers to the regularity coefficient of the change of geometric characteristics with temperature changes under the effect of thermal expansion and contraction of the material, and the thermal expansion coefficient αf of the material can be determined according to the fixed scroll 10a. The material is different, and the present invention is not limited to this; the fixed scroll height Lf refers to the fixed scroll blade top surface 1203a of the fixed scroll blade 120a and the inner surface of the fixed scroll base of the fixed scroll base 110a. The maximum axial distance of 1101a, that is, the fixed scroll blade top surface 1203a at the fixed scroll tip portion 121a with the pre-cut portion Da1 of the fixed scroll blade 120a and the fixed scroll base of the fixed scroll base 110a The axial distance of the surface 1101a; and the temperature rise ΔT generally refers to the temperature difference between the operating temperature before the compressor starts and a predetermined time after the start of operation, so the temperature rise ΔT and its predetermined time are not used. In order to limit the present invention, as long as it helps to obtain an appropriate axial depth of the precut portion, it can be adjusted according to actual conditions. In addition, the aforementioned operating temperature refers to the temperature of the internal environment (or the compression chamber S) during normal operation of the compressor, and may, but is not limited to, the temperature near the fluid outlet, but the present invention is not limited to the operating temperature.

On the other hand, from FIG. 8, FIG. 8 is a top view of the fixed scroll 10 a of FIG. 2, but in order to understand the content of this embodiment, the orbiting scroll blades 220 a of the orbiting scroll 20 a are additionally shown in FIG. 8. It is indicated by a dotted line. As shown in the figure, on the fixed scroll blade top surface 1203a, the extension of the pre-cut portion Da1 of the fixed scroll tip portion 121a extends from the leading edge (not numbered) of the fixed scroll tip portion 121a to the fixed scroll tip. A contact point at which the portion 121 a and the orbiting scroll tip portion 221 a come into contact with each other during the exhaust phase of the compressor 9. Specifically, during the exhaust phase of the compressor 9, the leading edge of the fixed scroll tip 121a contacts the inner surface 2201a of the orbiting scroll blade of the orbiting scroll tip 221a at the contact point P1 (that is, the orbiting scroll (Inner surface of tip portion 221a), orbiting the leading edge of scroll tip portion 221a to contact point P2 to contact inner surface 1201a of fixed scroll blade of fixed scroll tip portion 121a (that is, the inner surface of fixed scroll tip portion 121a) The extension of the pre-cut portion Da1 of the fixed scroll tip portion 121a extends from the leading edge of the fixed scroll tip portion 121a to the contact point P2 where the orbiting scroll tip portion 221a and the fixed scroll tip portion 121a contact each other.

Revisiting FIG. 7, another pre-cut portion Da2 is on the orbiting scroll blade top surface 2203a at the orbiting scroll blade tip portion 221a of the orbiting scroll blade 220a (that is, the orbiting scroll tip portion 221a). Top surface), so that the orbiting scroll tip portion 221a is stepped from a side perspective.

The axial depth of the pre-cut portion Da2 on the orbiting scroll tip portion 221a is related to the amount of thermal expansion deformation in the height direction after the orbiting scroll tip portion 221a is heated. Similarly, the "axial direction" and the "height direction" described herein refer to a direction that is horizontal to the orbit of the orbiting scroll 20a. For this purpose, first obtain the material thermal expansion coefficient of the orbiting scroll 20a as αo, the orbiting scroll 20a has an orbiting scroll height Lo, and the internal environment of the scroll structure 1a (or the fixed scroll 10a and the orbiting scroll 20a). The temperature rise of the compression chamber S) surrounded by the rolls 20a from the standstill of the scroll structure 1a to the predetermined time is ΔT. In this embodiment, the axial depth of the pre-cut portion Da2 on the orbiting scroll tip portion 221a is substantially proportional to Lo × αo × ΔT. That is, the axial depth of the pre-cut portion Da2 on the orbiting scroll tip portion 221a is determined by the thermal expansion deformation amount of the orbiting scroll tip portion 221a in the direction of its height after being heated, but the present invention is not based on the pre-cut The actual ratio between the axial depth of the part and Lo × αo × ΔT is limited, and the ratio should be adjusted according to actual needs.

It should be additionally explained that the aforementioned material thermal expansion coefficient αo may vary according to the material of the orbiting scroll 20a, and the present invention is not limited thereto; the orbiting scroll height Lo refers to the orbiting scroll blade 220a. The maximum axial distance between the top surface 2203a of the orbiting scroll blade and the inner surface 2101a of the orbiting scroll base 210a, that is, the orbiting scroll of the orbiting scroll blade 220a having a pre-cut portion Da2 The axial distance between the top surface 2203a of the orbiting scroll blade at the tip portion 221a and the inner surface 2101a of the orbiting scroll base 210a of the orbiting scroll base 210a; and the temperature rise ΔT and its predetermined time are the same as before As mentioned, as long as it helps to obtain an appropriate axial depth of the pre-cut portion Da2, it can be adjusted according to actual conditions, and the present invention is not limited thereto.

On the other hand, as seen from FIG. 8, on the top surface 2203a of the orbiting scroll blade, the extension of the pre-cut portion Da2 of the orbiting scroll tip portion 221a is the leading edge (not shown) of the self-orbiting scroll tip portion 221a. (No.) extends to a contact point P1 at which the fixed scroll tip portion 121a and the orbiting scroll tip portion 221a contact each other during the exhaust phase of the compressor 9.

Based on the aforementioned design of the pre-cut portion Da1 and the top surface 2203a of the orbiting scroll blade at the fixed scroll tip portion 121a and the orbiting scroll blade tip portion 221a in the central region C1, respectively, Da2, that is, in the central area C1, at least one of the adjacent surfaces of the fixed scroll 10a and the orbiting scroll 20a is designed with pre-cut portions Da1 and Da2, and the axial depths of the pre-cut portions Da1 and Da2 are respectively determined by The fixed scroll tip portion 121a and the orbiting scroll tip portion 221a are determined by the amount of thermal expansion deformation at the operating temperature (that is, substantially proportional to Lf × αf × ΔT and Lo × αo × ΔT, respectively). Therefore, the compressor 9 is at When the internal environment (that is, the compression chamber S) reaches the operating temperature after the subsequent operation, although the fixed scroll tip portion 121a of the fixed scroll blade 120a is thermally expanded and deformed due to high temperature, it has a pre-cut portion Da1 on it, so that Even after thermal expansion and deformation, it will not cause problems such as interference and friction with the orbiting scroll 20a. That is, the fixed scroll tip portion 121a of the fixed scroll blade 120a can use the pre-cut portion Da1 to compensate for its thermal expansion due to high temperature and avoid The fixed scroll blade 120a is closer to The hot fluid outlet 1104 generates a large thermal expansion and causes interference and friction with the orbiting scroll 20a. Similarly, the pre-cut portion Da2 can be used to compensate the orbiting scroll tip 220a of the orbiting scroll blade 220a. The thermal expansion due to high temperature can avoid the orbiting scroll blade 220a from generating large thermal expansion near the fluid outlet port 1104 at a higher temperature, and causing interference and friction with the fixed scroll 10a. In short, by designing the pre-cut portions Da1 and Da2 in the central region C1, it is helpful to avoid mutual interference and friction between the fixed scroll 10a and the orbiting scroll 20a near the fluid outlet 1104 due to thermal expansion. Problems, which in turn helps maintain low noise and high operating efficiency characteristics.

Next, other embodiments in which the pre-cut portion is located at different positions will be described. It is reminded that the main difference between the following embodiment and the previous embodiment lies in the position of the pre-cut portion, so similarities are not described in detail.

For example, please refer to 9-11. FIG. 9 is a partial enlarged schematic side view of a scroll structure according to a second embodiment of the present invention, FIG. 10 is a front view of the fixed scroll in FIG. 9, and FIG. 11 is a diagram Front view of 9 orbiting scroll.

As shown in the figure, the fixed scroll root portion 111b of the fixed scroll 10b and the orbiting scroll root portion 211b of the orbiting scroll 20b have pre-cut portions Db1 and Db2, respectively, but the fixed scroll tip portion 121b of the fixed scroll 10b and The orbiting scroll tip portion 221b of the orbiting scroll 20b does not have a pre-cut portion.

Similarly, the pre-cut portions Db1 and Db2 on the fixed scroll root portion 111b of the fixed scroll 10b and the orbiting scroll root portion 211b of the orbiting scroll 20b are located outside the fixed scroll base of the fixed scroll base 110b. Surface 1102b, the outer surface 1202b of the fixed scroll blade at the fixed scroll tip portion 121b (that is, the outer surface of the fixed scroll tip portion 121b), the outer surface 2202b of the orbiting scroll blade at the orbiting scroll tip portion 221b ( (Ie, the outer surface of the orbiting scroll tip 221b) and the outer surface 2102b of the orbiting scroll base 210b, which is surrounded by a central area C2, and the fluid outlet 1104 is also located The center area C2.

The axial depth of the pre-cut portion Db1 on the fixed scroll root 111b of the fixed scroll 10b is determined by the thermal expansion deformation of the orbiting scroll tip portion 221b when heated to the operating temperature (that is, substantially proportional to (Lo × αo × ΔT), as for the extension range of the fixed scroll base inner surface 1101b of the fixed scroll base 110b is substantially proportional to the fixed scroll tip portion 121b and the orbiting scroll tip portion 221b to the compressor When the respective leading edges are in contact with each other in the exhaust phase, the fixed scroll blade inner surface 1201b (that is, the inner surface of the fixed scroll tip 121b) at the fixed scroll tip portion 121b and the orbiting scroll tip portion 221b The area surrounded by the outer surface 2202b of the orbiting scroll blade (that is, the outer surface of the orbiting scroll tip portion 221b) is projected on the projection range of the inner surface 1101b of the fixed scroll base 110b of the fixed scroll base 110b. The cut portion Db1 may surround the fluid discharge port 1104.

On the other hand, the axial depth of the pre-cut portion Db2 on the orbiting scroll root 211b of the orbiting scroll 20b is determined by the amount of thermal expansion deformation of the fixed scroll tip portion 121b when heated to the operating temperature (i.e. (It is substantially proportional to Lf × αf × ΔT). As for the extension range of the orbiting scroll base inner surface 2101b of the orbiting scroll base 210b, it is substantially proportional to the fixed scroll tip 121b and the orbiting scroll tip. When the parts 221b contact each other at the respective leading edges during the compressor exhaust phase, the inner surface 2201b of the orbiting scroll blade at the orbiting scroll tip portion 221b (that is, the inner surface of the orbiting scroll tip portion 221b) and The area surrounded by the outer surface 1202b of the fixed scroll blade at the fixed scroll tip 121b (that is, the outer surface of the fixed scroll tip 121b) is projected on the inner surface of the orbiting scroll base 210b of the orbiting scroll base 210b 2101b's projection range. It can be understood that the pre-cut portion Db2 on the orbiting scroll root 211b of the orbiting scroll 20b is projected on the inner surface 1101b of the fixed scroll base 110b of the fixed scroll base 110b and the fixing of the fixed scroll 10b The pre-cut portion Db1 on the scroll root portion 111b at least partially overlaps.

Accordingly, in the central region C2, the pre-cut portions Db1 and Db2 designed on the fixed scroll root portion 111b of the fixed scroll 10b and the orbiting scroll root portion 211b of the orbiting scroll 20b, respectively, and the pre-cut portion Db1 The axial depth from Db2 is determined by the thermal expansion deformation of the orbiting scroll blade 220b and the fixed scroll blade 120b when heated to the operating temperature (that is, substantially proportional to Lo × αo × ΔT and Lf × αf × ΔT, respectively). ). Therefore, when the internal environment is heated up to the operating temperature after the compressor starts to operate, the fixed scroll tip portion 121b of the fixed scroll blade 120b is thermally expanded and deformed due to high temperature, but the orbiting scroll of the orbiting scroll 20b The root portion 211b has a pre-cut portion Db2. Therefore, even if the fixed scroll tip portion 121b expands and deforms, it will not cause interference or friction with the orbiting scroll 20b. The pre-cut portion Db2 can be used to compensate the fixed scroll of the fixed scroll blade 120b. The thermal expansion of the coil tip portion 121b due to high temperature, to avoid the large thermal expansion of the fixed scroll blade 120b near the higher temperature fluid outlet port 1104 and interference and friction with the orbiting scroll 20b; similarly, The pre-cut portion Db1 can be used to compensate the thermal expansion of the orbiting scroll tip portion 221b of the orbiting scroll blade 220b due to the high temperature, and the orbiting scroll tip portion 221b can be prevented from generating near the fluid outlet 1104 at a higher temperature. Large thermal expansion causes problems such as interference and friction with the fixed scroll 10b. In short, the positions of the pre-cut portions Db1 and Db2 in this embodiment also help to avoid the problems of mutual interference and friction between the fixed scroll 10b and the orbiting scroll 20b near the fluid outlet 1104 due to thermal expansion. Helps maintain low noise and high operating efficiency characteristics.

For another example, please refer to FIG. 12, which is a partially enlarged schematic side view of a scroll structure according to a third embodiment of the present invention. As shown in the figure, the fixed scroll tip 121c of the fixed scroll 10c, the fixed scroll root 111c of the fixed scroll 10c, the orbiting scroll tip 221c of the orbiting scroll 20c, and the orbiting scroll 20c The scroll root portion 211c has pre-cut portions Dc1, Dc2, Dc3, and Dc4, respectively.

Similarly, the pre-cut portions Dc1, Dc2, Dc3, and Dc4 are all located on the fixed scroll base outer surface 1102c of the fixed scroll base 110c, and the fixed scroll blade outer surface 1202c at the fixed scroll tip portion 121c (that is, Refers to the outer surface of the fixed scroll tip 121c), the outer surface of the orbiting scroll blade 2202c at the orbiting scroll tip 221c (that is, the outer surface of the orbiting scroll tip 221c), and the orbiting scroll base A central area C3 surrounded by the outer surface 2102c of the orbiting scroll base of the seat 210c, and the fluid outlet 1104 is also located in the central area C3. In addition, the extension ranges of the pre-cut portions Dc1, Dc2, Dc3, and Dc4 on the fixed scroll tip portion 121c, the fixed scroll root portion 111c, the orbiting scroll tip portion 221c, and the orbiting scroll root portion 211c can refer to the foregoing embodiments. The content obtained is not repeated here, and the depth of these pre-cut portions Dc1, Dc2, Dc3 and Dc4 in the axial direction, such as the pre-cut portion Dc2 on the fixed scroll root 111c and the orbiting scroll tip The total axial depth of the pre-cut portion Dc3 on the portion 221c is substantially determined by the amount of thermal expansion deformation of the orbiting scroll tip portion 221c when heated to the operating temperature (that is, substantially proportional to Lo × αo × ΔT), but the The individual axial depths of the cut portion Dc2 and the pre-cut portion Dc3 can be adjusted according to actual needs, as long as the sum of the axial depths corresponds to the aforementioned thermal expansion deformation, which are all within the scope of the present invention; and the fixed scroll tip 121c The total axial depth of the pre-cut portion Dc1 and the pre-cut portion Dc4 on the orbiting scroll root portion 211c is substantially determined by the amount of thermal expansion deformation of the fixed scroll tip portion 121c when heated to the operating temperature (that is, substantially proportional to (Lf × αf × ΔT). Similarly, the pre-cut portion Dc1 and Dc4 individual axial depth cut portion may adjust according to the actual needs, as long as the combined total axial depth of the amount of thermal expansion corresponding to the foregoing, all fall within the scope of the present invention.

It can be understood from the previously introduced embodiments that in this embodiment, when the compressor starts to operate subsequently, the pre-cut portions Dc1, Dc2, Dc3, and Dc4 can also be used to compensate the fixed scroll 10c and the orbiting scroll 20c. The amount of thermal expansion and deformation caused by the high temperature of the fixed scroll tip 121c and the orbiting scroll tip 221c near the fluid discharge port can prevent mutual interference between the fixed scroll 10c and the orbiting scroll 20c, The problem of friction helps to maintain low noise and high operating efficiency characteristics.

In other words, as long as the pre-cut portion is designed in the central area defined by the fixed scroll and the orbiting scroll, the temperature rise between the fixed scroll and the orbiting scroll can be helped or slowed down. Aspects of problems such as frictional heat and frictional noise caused by thermal deformation belong to the scope of the present invention. In the following, multiple embodiments will be used to explain, but it should be stated that the pre-cut sections mentioned in the subsequent embodiments are also located in the central area as described in the previous embodiments. Purpose, subsequent drawings will no longer show the central area.

For example, FIG. 13 is a partially enlarged schematic side view of a scroll structure according to a fourth embodiment of the present invention. In this embodiment, the fixed scroll tip 121d, the fixed scroll root 111d of the fixed scroll 10d, and the orbiting scroll tip 221d of the orbiting scroll 20d are respectively provided with pre-cut portions Dd1, Dd2, and Dd3, but The orbiting scroll root 211d of the orbiting scroll 20d has no pre-cut portion. Similarly, in this embodiment, the extension range of the pre-cut portions Dd1, Dd2, and Dd3 on the foregoing parts is the same as that described in the foregoing embodiment, and can be obtained by referring to the content of the foregoing embodiment, and details are not described herein again. On the other hand, similarly, in the axial direction, the total axial depth of the pre-cut portion Dd2 on the fixed scroll root 111d and the pre-cut portion Dd3 on the orbiting scroll tip 221d is substantially proportional to Lo × αo × ΔT, and the axial depth of the pre-cut portion Dd1 on the fixed scroll tip 121d is substantially proportional to Lf × αf × ΔT.

For another example, please refer to FIG. 14, which is a partially enlarged schematic side view of a scroll structure according to a fifth embodiment of the present invention. In this embodiment, the fixed scroll tip portion 121e of the fixed scroll 10e, the orbiting scroll tip portion 221e and the orbiting scroll root portion 211e of the orbiting scroll 20e are respectively provided with precut portions De1, De2, and De3. The fixed scroll root 111e of the fixed scroll 10e has no pre-cut portion. Similarly, in this embodiment, the extended ranges of the pre-cut portions De1, De2, and De3 on the respective parts are the same as those described in the previous embodiment, and can be obtained by referring to the rules of the previous embodiment, and are not described herein again. On the other hand, it can be understood that in the axial direction, the total axial depth of the pre-cut portion De1 on the fixed scroll tip 121e and the pre-cut portion De3 on the orbiting scroll root 211e is substantially proportional to Lf × αf × ΔT, and the axial depth of the pre-cut portion De2 on the orbiting scroll tip portion 221e is substantially proportional to Lo × αo × ΔT.

For another example, please refer to FIG. 15, which is a partially enlarged schematic side view of a scroll structure according to a sixth embodiment of the present invention. In this embodiment, the fixed scroll tip portion 121f of the fixed scroll 10f, the fixed scroll root portion 111f, and the orbiting scroll root portion 211f of the orbiting scroll 20f are respectively provided with pre-cut portions Df1, Df2, and Df3, and the The orbiting scroll tip portion 221f of the orbiting scroll 20f has no pre-cut portion. Similarly, in this embodiment, the extension range of the pre-cut portions Df1, Df2, and Df3 on each part is the same as that described in the previous embodiment, and can be obtained by referring to the rules of the previous embodiment, and will not be repeated here. On the other hand, it can be understood that in the axial direction, the total axial depth of the pre-cut portion Df1 on the fixed scroll tip 121f and the pre-cut portion Df3 on the orbiting scroll root 211f is substantially proportional to Lf × αf × ΔT, and the axial depth of the pre-cut portion Df2 on the fixed scroll root 111f is substantially proportional to Lo × αo × ΔT.

Then, for example, please refer to FIG. 16, which is a partially enlarged schematic side view of a scroll structure according to a seventh embodiment of the present invention. In this embodiment, the fixed scroll root 111g of the fixed scroll 10g, the orbiting scroll tip 221g and the orbiting scroll root 211g of the orbiting scroll 20g are respectively provided with pre-cut portions Dg1, Dg2, and Dg3, and The fixed scroll tip 121g of the fixed scroll 10g has no pre-cut portion. Similarly, in this embodiment, the extension range of the pre-cut portions Dg1, Dg2, and Dg3 on each part is the same as that described in the previous embodiment, and can be obtained by referring to the rules of the previous embodiment, and is not repeated here. On the other hand, it can be understood that in the axial direction, the total axial depth of the pre-cut portion Dg1 on the fixed scroll root 111g and the pre-cut portion Dg2 on the orbiting scroll tip 221g is substantially proportional to Lo × αo × ΔT, and the axial depth of the pre-cut portion Dg3 on the orbiting scroll root 211g is substantially proportional to Lf × αf × ΔT.

In addition, the scroll structure can also be designed with a pre-cut portion only on one of the fixed scroll or the orbiting scroll, which still helps to reduce the occurrence of thermal deformation between the fixed scroll and the orbiting scroll due to high temperature thermal deformation. Friction noise and high temperature. For example, FIG. 17 is a partially enlarged schematic side view of a scroll structure according to an eighth embodiment of the present invention. This embodiment is only at the fixed scroll tip portion 121h and the fixed scroll root portion 111f of the fixed scroll 10h, respectively. The pre-cut portions Dh1 and Dh2 are designed, and the pre-cut portions Dh1 and Dh2 can avoid interference and friction between the fixed scroll 10h near the fluid discharge port 1104 and the orbiting scroll 20h due to high temperature expansion. In other words, although only one of the fixed scroll and the orbiting scroll has a pre-cut portion, it still helps to reduce the frictional noise and high temperature caused by the high-temperature thermal deformation between the fixed scroll and the orbiting scroll. problem. However, this embodiment is only one example. In other embodiments, the pre-cut portion may be designed only in the orbiting scroll, and the present invention is not limited thereto.

For another example, in other embodiments, the pre-cut portion may be selected only in one of the orbiting scroll tip portion, the orbiting scroll root portion, the fixed scroll tip portion, and the fixed scroll root portion, which can also slow down the fixed scroll The aforementioned problems with orbiting scrolls. For example, please refer to FIG. 18, which is a partially enlarged schematic side view of a scroll structure according to a ninth embodiment of the present invention. In this embodiment, the fixed scroll 10i has a pre-cut portion Di1 only on the fixed scroll tip 121i, but it can still reduce the friction noise caused by the high-temperature thermal deformation between the fixed scroll and the orbiting scroll. Problems with high temperature.

Finally, it should be added that, although the pre-cut portion is designed on the top surface of the fixed scroll tip portion and / or the orbiting scroll tip portion, the range of the pre-cut portion covers the entire fixed scroll tip. And / or the top surface of the orbiting scroll tip, but the invention is not limited thereto. For example, please refer to FIG. 19, which is a partially enlarged schematic diagram of a fixed scroll according to a tenth embodiment of the present invention. In this embodiment, the fixed scroll 10j has a pre-cut portion Dj1 only on the fixed scroll tip portion 121j. However, unlike the previous embodiment, the pre-cut portion Dj1 does not completely cover the fixed scroll tip portion 121j. The range of the top portion is a structure in which a part of the top portion of the fixed scroll tip portion 121j remains without pre-cutting. However, it can be understood that, since the fixed scroll tip 121j of this embodiment still has a certain proportion of the pre-cut portion Dj1, it still helps to reduce the temperature between the fixed scroll and the orbiting scroll due to high temperature thermal deformation. Problems such as friction noise and high temperature.

According to the aforementioned scroll structure of the present invention, since at least one pre-cut portion is located in the central area surrounded by the outer surface of the structure such as the fixed scroll base, the fixed scroll tip portion, the orbiting scroll base, the orbiting scroll tip portion, and the like. And the pre-cut portion is located on at least one of the adjacent surfaces of the fixed scroll and the orbiting scroll, that is, the pre-cut portion is designed in a region where the internal temperature is high when the compressor is running, so it is helpful Avoiding interference and friction during thermal expansion of the fixed scroll orbiting scroll and the orbiting scroll tip due to the high operating temperature, so that the problems of noise and temperature rise due to friction between the fixed scroll and the orbiting scroll can be avoided. Fixed scrolls and orbiting scrolls cause problems of noise and temperature rise due to friction, which helps maintain the low noise and high operating efficiency characteristics of the scroll structure, and helps extend the service life.

Although the present invention is disclosed in the foregoing embodiments, it is not intended to limit the present invention. Changes and modifications made without departing from the spirit and scope of the present invention belong to the patent protection scope of the present invention. For the protection scope defined by the present invention, please refer to the attached patent application scope.

1a‧‧‧Scroll structure

9‧‧‧ scroll compressor, compressor

10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, 10i, 10j‧‧‧ fixed scroll

20a, 20b, 20c, 20d, 20e, 20f, 20g, 20h

110a, 110b, 110c‧‧‧ fixed scroll base

111a, 111b, 111c, 111d, 111e, 111f, 111g‧‧‧Fixed scroll root

120a, 120b‧‧‧ fixed scroll blade

121a, 121b, 121c, 121d, 121e, 121f, 121g, 121h, 121i, 121j‧‧‧ fixed scroll tip

210a, 210b‧‧‧ Orbiting scroll base

211a, 211b, 211c, 211d, 211e, 211f, 211g‧‧‧ Orbit the root of the scroll

220a, 220b‧‧‧orbiting scroll blades

221a, 221b, 211c, 221d, 221e, 221f, 221g‧‧‧ Orbit the tip of the scroll

1101a, 1101b‧‧‧ Fixed inner surface of scroll base

1102a, 1102b, 1102c‧‧‧‧Outer surface of fixed scroll base

1103‧‧‧Fluid suction port

1104‧‧‧fluid outlet

1201a, 1201b‧‧‧‧Inner surface of fixed scroll blade

1202a, 1202b, 1202c‧‧‧ Fixed outer surface of scroll blade

1203a‧‧‧Top surface of fixed scroll blade

2101a, 2101b‧‧‧ Orbit the inner surface of the scroll base

2102a, 2102b, 2102c‧‧‧ Orbit the outer surface of the scroll base

2201a, 2201b‧‧‧ Orbiting scroll inner surface

2202a, 2202b, 2202c‧‧‧ Orbiting the outer surface of scroll blades

2203a‧‧‧ Orbiting scroll top surface

C1, C2, C3 ‧‧‧ central area

Da1, Da2, Db1, Db2, Dc1, Dc2, Dc3, Dc4, Dd1, Dd2, Dd3, De1, De2, De3, Df1, Df2, Df3, Dg1, Dg2, Dg3, Dh1, Dh2, Di1, Dj1‧‧‧‧ Pre-cut section

αf‧‧‧ Material Thermal Expansion Coefficient of Fixed Scroll

αo‧‧‧ Coefficient of Thermal Expansion of Scroll

Lf‧‧‧ fixed scroll height

Lo‧‧‧ Orbiting scroll height

P1, P2‧‧‧ contact points

S‧‧‧ compression chamber

ΔT‧‧‧Temperature rise, temperature difference

FIG. 1 is an exploded view of a scroll compressor and a scroll structure according to a first embodiment of the present invention. FIG. 2 is a schematic perspective view of the fixed scroll of FIG. 1. FIG. 3 is a schematic perspective view of the orbiting scroll in FIG. 1. Fig. 4 is a schematic sectional side view of an assembly of a scroll structure according to a first embodiment of the present invention. FIG. 5 is a simulation data diagram of the thermal expansion deformation of the fixed scroll in the first embodiment of the present invention. FIG. 6 is a simulation data diagram of a thermal expansion deformation amount of an orbiting scroll in the first embodiment of the present invention. FIG. 7 is a partially enlarged view of FIG. 4. FIG. 8 is a front view of the fixed scroll of FIG. 2. FIG. 9 is a partially enlarged schematic side view of a scroll structure according to a second embodiment of the present invention. FIG. 10 is a front view of the fixed scroll of FIG. 9. FIG. 11 is a front view of the orbiting scroll of FIG. 9. FIG. 12 is a partially enlarged schematic side view of a scroll structure according to a third embodiment of the present invention. 13 is a partially enlarged schematic side view of a scroll structure according to a fourth embodiment of the present invention. 14 is a partially enlarged schematic side view of a scroll structure according to a fifth embodiment of the present invention. 15 is a partially enlarged schematic side view of a scroll structure according to a sixth embodiment of the present invention. FIG. 16 is a partially enlarged schematic side view of a scroll structure according to a seventh embodiment of the present invention. FIG. 17 is a partially enlarged schematic side view of a scroll structure according to an eighth embodiment of the present invention. 18 is a partial enlarged schematic side view of a scroll structure according to a ninth embodiment of the present invention. FIG. 19 is a partially enlarged schematic diagram of a fixed scroll according to a tenth embodiment of the present invention.

Claims (13)

A scroll structure of a compressor includes: a fixed scroll, including a fixed scroll base and a fixed scroll blade standing on the fixed scroll base, wherein the fixed scroll base has a fluid outlet ; An orbiting scroll, comprising an orbiting scroll base and an orbiting scroll blade erected on the orbiting scroll base, the orbiting scroll can be rotated relative to the fixed scroll; wherein the scroll The roll structure has at least one pre-cut portion, and defines a fixed scroll tip portion of the fixed scroll blade and a orbiting scroll tip portion of the orbiting scroll blade in contact with each other during the compressor exhaust phase, The outer surface of the fixed scroll tip portion, the outer surface of the orbiting scroll tip portion, the outer surface of the fixed scroll base, and the outer surface of the orbiting scroll base collectively surround a central area, wherein, The fluid outlet is located in the central area, and the at least one pre-cut portion is located in the central area and on at least one of a top surface of the fixed scroll tip portion and a top surface of the orbiting scroll tip portion; When the at least one pre-cut portion is located at the fixed scroll tip The top surface of the fixed scroll tip portion, the extension range of the at least one pre-cut portion extends from the leading edge of the fixed scroll tip portion to the fixed scroll tip portion and the orbiting scroll A contact point when the tip portions come into contact with each other during the compressor exhaust phase; and when the at least one pre-cut portion is located on the top surface of the orbiting scroll tip portion, the top surface of the orbiting scroll tip portion The extension range of the at least one pre-cut portion extends from the leading edge of the orbiting scroll tip to a point when the fixed scroll tip and the orbiting scroll tip contact each other during the compressor exhaust phase. Contact point. The scroll structure according to claim 1, wherein the material of the fixed scroll has a coefficient of thermal expansion α f, one of the fixed scrolls has a fixed scroll height of Lf, and the internal environment of the scroll structure is The temperature rise after stationary for a predetermined time is ΔT, and the axial depth of the at least one pre-cut portion on the fixed scroll tip portion is substantially proportional to Lf × α f × ΔT. The scroll structure according to claim 1, wherein a material thermal expansion coefficient of the orbiting scroll is α o, one of the orbiting scrolls has a orbiting scroll height of Lo, and an internal environment of the scroll structure is in the scroll The temperature rise of the coil structure from stationary to running for a predetermined time is ΔT, and the axial depth of the at least one pre-cut portion when the orbiting scroll tip portion is substantially proportional to Lo × α o × ΔT. The scroll structure according to claim 1, wherein the at least one pre-cut portion is located on at least one of a fixed scroll root of one of the fixed scrolls and an orbiting scroll root of one of the orbiting scrolls. The scroll structure according to claim 4, wherein the fixed scroll base has an inner surface of the fixed scroll base facing the orbiting scroll, and the at least one preliminarily formed on a root of the fixed scroll of the fixed scroll. The cut portion is located on the inner surface of the fixed scroll base, and the range of the at least one pre-cut portion on the inner surface of the fixed scroll base is substantially proportional to the leading edge of the fixed scroll tip portion and the orbiting scroll When the front edge portions come into contact with each other under the compressor exhaust stage, a region surrounded by the inner surface of the fixed scroll tip portion and the outer surface of the orbiting scroll tip portion is projected into the fixed scroll base. The projection range of the surface. The scroll structure according to claim 5, wherein a material thermal expansion coefficient of the orbiting scroll is α o, one of the orbiting scrolls has a orbiting scroll height of Lo, and an internal environment of the scroll structure is in the scroll The temperature rise of the coil structure from a standstill to a predetermined time of operation is △ T, and the axial depth of the at least one pre-cut portion on the fixed scroll root of the fixed scroll is substantially proportional to Lo × α o × △ T . The scroll structure according to claim 4, wherein the orbiting scroll base has an inner surface of the orbiting scroll base facing the fixed scroll, and the orbiting scroll is formed on the root of the orbiting scroll. At least one pre-cut portion is located on the inner surface of the orbiting scroll base, and the range of the at least one pre-cut portion on the inner surface of the orbiting scroll base is substantially proportional to the leading edge of the fixed scroll tip portion and When the front end of the orbiting scroll comes into contact with each other at the compressor exhaust stage, a region surrounded by the inner surface of the orbiting scroll tip and the outer surface of the fixed scroll tip is projected on the orbiting scroll. The projection range on the inner surface of the orbiting scroll base. The scroll structure according to claim 7, wherein the material of the fixed scroll has a coefficient of thermal expansion α f, one of the fixed scrolls has a fixed scroll height of Lf, and the internal environment of the scroll structure is The temperature rise after stationary for a predetermined time is ΔT, and the axial depth of the at least one pre-cut portion on the orbiting scroll root is substantially proportional to Lf × α f × ΔT. The scroll structure according to claim 1, wherein the number of the at least one pre-cut portion is multiple, and is respectively located on a top surface of the fixed scroll tip portion and a top surface of the orbiting scroll tip portion. The scroll structure according to claim 1, wherein the number of the at least one pre-cut portion is multiple, and are respectively located at a fixed scroll root of one of the fixed scrolls and an orbiting scroll root of one of the orbiting scrolls. The scroll structure according to claim 1, wherein the number of the at least one pre-cut portion is multiple, and are respectively located in a top surface of the fixed scroll tip portion and an orbiting scroll root portion of the orbiting scroll. One and a top surface of a tip of the orbiting scroll and a root of the fixed scroll. The scroll structure according to claim 1, wherein the number of the at least one pre-cut portion is multiple, and is located on one of a top surface of a tip of the orbiting scroll and a root of a fixed scroll of the fixed scroll. The top surface of one of the fixed scroll tips and the orbiting scroll root of one of the orbiting scrolls. The scroll structure according to claim 1, wherein the number of the at least one pre-cut portion is a plurality, which are respectively located at a fixed scroll root of one of the fixed scrolls, a top surface of one of the fixed scroll tips, and the winding A top surface of a tip of the movable scroll and a root of the orbiting scroll.