Compression mechanism and compressor having the same

Abstract

The present invention provides a compression mechanism and a compressor having the same. The compression mechanism includes a base; blades, wherein the blades are multiple, the multiple blades are connected to the base, a compression channel is formed between adjacent blades, and the width of the cross section of the compression channel is gradually reduced inwardly along the radial direction of the base; wherein the multiple blades are extended inwardly along the radial direction of the base, and an exhaust channel is formed between the ends of the multiple blades near the geometric center of the base, and the compression channel is connected to the exhaust channel. Such an arrangement can avoid the problem of refrigerant leakage caused by the large number of moving pairs, which makes the moving parts prone to wear when compressing the refrigerant using multiple moving pairs such as rollers and eccentric crankshafts in the prior art. The technical solution of the present application provides a new refrigerant compression mechanism, which has a simple structure and high reliability in operation.

Description

Technical Field

[0001] The present invention relates to the technical field of compressor equipment, and in particular to a compression mechanism and a compressor having the same. Background Art

[0002] Rotary compressors and scroll compressors are widely used as air conditioning compression mechanisms because of their simple structure, small size, excellent performance, high stability, and few reciprocating parts. However, there are many friction pairs inside the compressor, such as vanes and vane grooves, rollers, upper and lower flange end covers, rollers and upper and lower flange end covers, crankshafts and rollers, upper and lower flange end covers, etc. for rotary compressors, and between moving and static scrolls, moving scrolls and cross slip rings, upper bracket support surfaces, crankshafts, etc. for scroll compressors. Many friction pairs are very likely to cause friction and wear between mating end faces and gap leakage, which has become an important factor affecting the performance and reliability of the compressor. In addition, the rollers of rotary compressors and the moving scrolls of scroll compressors need to perform eccentric motion. In addition to adding additional motion pairs, they also put forward higher requirements on the machining accuracy and difficulty of the crankshaft, increase process consumption, and increase costs. Summary of the invention

[0003] The main purpose of the present invention is to provide a compression mechanism and a compressor having the same, so as to solve the problems of friction wear of the crankshaft end face caused by more friction pairs of the pump body and complex processing of the eccentric part of the crankshaft in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a compression mechanism is provided, comprising: a base; a plurality of blades, wherein the blades are connected to the base, a compression channel is formed between adjacent blades, and the width of the cross section of the compression channel is gradually reduced inwardly along the radial direction of the base; wherein the plurality of blades are extended inwardly along the radial direction of the base, an exhaust channel is formed between the ends of the plurality of blades near the geometric center of the base, and the compression channel is connected to the exhaust channel.

[0005] Furthermore, the profiles of the plurality of blades inwardly directed in the radial direction are logarithmic spirals, which are obtained by the following formula: r = r g e θtanα , where r is the coordinate of the point on the logarithmic spiral line along the radial direction of the substrate; θ is the coordinate of the point on the logarithmic spiral line along the circumferential direction of the substrate; r g is the radius of the root of the logarithmic spiral; α is the spiral angle of the logarithmic spiral; e is a natural constant.

[0006] Furthermore, the plurality of blades are integrally arranged with the base.

[0007] Furthermore, the surface between adjacent blades of the base body forms the bottom surface of the compression channel, and the bottom surface is arranged in the form of an arc surface, a horizontal surface or an inclined surface.

[0008] Furthermore, the compression mechanism also includes: an end cover, which is arranged opposite to the multiple blades, and the end cover is arranged opposite to the base, a compression channel is surrounded by the end cover, the blades and the base, and an exhaust hole is opened on the end cover, and the exhaust hole is connected to the exhaust channel.

[0009] Furthermore, the compression mechanism also includes: an exhaust valve, the exhaust valve is connected to the end cover, the exhaust valve has a sealing position when the exhaust hole is sealed, and the exhaust valve has an opening position when the exhaust hole is opened.

[0010] Furthermore, a sealing groove is provided on the surface of each blade facing the end cover, and a sealing strip is provided in the sealing groove.

[0011] Furthermore, the number of blades is N, where 3≤N≤20.

[0012] Furthermore, there are multiple substrates, each of which is provided with multiple blades, the multiple substrates are arranged along the vertical direction, and the exhaust passages formed on the substrates are arranged in a connected manner.

[0013] Furthermore, the blades on adjacent substrates are arranged in a one-to-one correspondence, or the blades on adjacent substrates are arranged in a staggered manner.

[0014] Furthermore, the cross section of the base is circular, the compression mechanism further comprises a driving part, an output shaft of the driving part is connected to the base, and the base and the output shaft are coaxially arranged.

[0015] According to another aspect of the present invention, a compressor is provided, comprising a compression mechanism, wherein the compression mechanism is the above-mentioned compression mechanism.

[0016] Furthermore, the compressor includes: a shell; a support frame, the support frame is arranged in the shell, and the end cover of the compression mechanism is connected to the support frame to form a accommodating chamber for accommodating the base and the blades; a driving part, the driving part is arranged in the shell, the output shaft of the driving part passes through the support frame and is connected to the base, and the driving part can drive the base to perform circular motion.

[0017] Furthermore, the compressor also includes: a sealing cover, a part of which is in contact with the top of the end cover, the sealing cover is circumferentially connected to the inner wall of the shell, an exhaust cavity is formed between the side of the sealing cover away from the end cover and the shell, and a connecting channel connecting the exhaust cavity and the exhaust hole is opened on the sealing cover.

[0018] Furthermore, the driving part includes a motor, the output shaft includes a crankshaft, a main bearing is sleeved on the first end of the crankshaft, the outer circumference of the main bearing is connected to the support frame, and a secondary bearing is sleeved on the second end of the crankshaft, and the secondary bearing is arranged on the support member in the shell.

[0019] Furthermore, the support frame is located above the motor stator, and a side of the support member away from the motor stator and the bottom of the housing are arranged to form an oil pool.

[0020] By applying the technical solution of the present invention, a plurality of blades are arranged on the base, and compression channels are formed between the blades. When the base rotates at high speed, the refrigerant is sucked into the compression channel, and after being compressed in the compression channel, it is discharged out of the compression mechanism through the exhaust channel. This arrangement can avoid the problem of refrigerant leakage caused by the large number of moving pairs, which makes the moving parts prone to wear when compressing the refrigerant using multiple moving pairs such as rollers and eccentric crankshafts in the prior art. The technical solution of the present application provides a new refrigerant compression mechanism, which has a simple structure and high reliability in operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic cross-sectional view of a compressor according to an embodiment of the present invention is shown;

[0023] Figure 2 A schematic structural diagram of a first embodiment of a base body and a blade according to the present invention is shown;

[0024] Figure 3 A structural schematic diagram showing an embodiment of the flow direction of the refrigerant in the compression channel according to the present invention;

[0025] Figure 4 A schematic structural diagram of a second embodiment of a base body and a blade according to the present invention is shown;

[0026] Figure 5 A schematic structural diagram of a third embodiment of a base body and a blade according to the present invention is shown;

[0027] Figure 6 A schematic structural diagram of a fourth embodiment of a base body and a blade according to the present invention is shown;

[0028] Figure 7 A schematic structural diagram of a fifth embodiment of a base body and blades according to the present invention is shown.

[0029] The above drawings include the following reference numerals:

[0030] 1. Compression mechanism; 2. Motor; 3. Housing; 11. Crankshaft; 13. Compression channel; 14. End cover; 15. Exhaust valve; 16. Sealing cover; 17. Fixing pin; 18. Support frame; 19. Main bearing; 20. Auxiliary bearing;

[0031] 123. sealing strip; 124. blade; 125. base body;

[0032] 121. Air inlet; 122. Exhaust passage. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0037] Combination Figures 1 to 7 As shown, according to an embodiment of the present invention, a compression mechanism is provided.

[0038] like Figure 1 and Figure 2As shown, the compression mechanism includes a base 125 and blades 124. There are multiple blades 124, and the multiple blades 124 are connected to the base 125. A compression channel 13 is formed between adjacent blades 124. The width of the cross section of the compression channel 13 is gradually reduced inwardly along the radial direction of the base 125. Among them, the multiple blades 124 are extended inwardly along the radial direction of the base 125, and an exhaust channel 122 is formed between the ends of the multiple blades 124 near the geometric center of the base 125, and the compression channel 13 is connected to the exhaust channel 122.

[0039] In this embodiment, a plurality of blades are provided on the base, and compression channels are formed between the blades. When the base rotates at high speed, the refrigerant is sucked into the compression channel, and after being compressed in the compression channel, it is discharged out of the compression mechanism through the exhaust channel. This arrangement can avoid the problem of refrigerant leakage caused by the wear of moving parts due to the large number of moving pairs when the refrigerant is compressed by using multiple moving pairs such as rollers and eccentric crankshafts in the prior art. The technical solution of the present application provides a new refrigerant compression mechanism with a simple structure and high reliability in operation. It effectively solves the problem of crankshaft end face friction and wear caused by the large number of pump body friction pairs in the prior art, which causes pump body leakage, and the problem of complex processing of the eccentric part of the crankshaft in the prior art.

[0040] The radially inward profiles of the plurality of blades 124 are logarithmic spirals, which are obtained by the following formula: r = r g e θtanα , where r is the coordinate of the point on the logarithmic spiral line along the radial direction of the substrate 125, θ is the coordinate of the point on the logarithmic spiral line along the circumferential direction of the substrate 125, and r g is the radius of the root of the logarithmic spiral, that is, the radius of the profile of the blade close to the surface of the base, α is the helix angle of the logarithmic spiral, and e is a natural constant. This arrangement enables the compression channel formed between adjacent blades to play a better compression role, effectively improving the compression performance of the compression channel.

[0041] Preferably, in order to improve the connection reliability between the blades and the base, the plurality of blades 124 and the base 125 may be integrally formed.

[0042] The surface between adjacent blades 124 of the base 125 forms the bottom surface of the compression channel 13, and the bottom surface is arranged in an arc surface, a horizontal surface or an inclined surface. Figure 4 As shown, the bottom surface of the compression channel 13 is a curved surface structure. Figure 5 As shown, the bottom surface of the compression channel 13 is an inclined surface structure. Such an arrangement can improve the compression performance of the compression channel.

[0043] like Figure 1As shown, the compression mechanism also includes an end cover 14 and an exhaust valve 15. The end cover 14 is arranged opposite to the plurality of blades 124, and the end cover 14 is arranged opposite to the base 125. The end cover 14, the blades 124, and the base 125 are surrounded by a compression channel 13, and an exhaust hole is opened on the end cover 14, and the exhaust hole is connected to the exhaust channel 122. The exhaust valve is connected to the end cover 14, and the exhaust valve has a sealing position when the exhaust hole is sealed, and the exhaust valve has an open position when the exhaust hole is opened. This arrangement allows the exhaust valve to be opened when the refrigerant in the exhaust channel 122 is stored to a certain pressure value, and then discharged from the compression mechanism through the exhaust hole.

[0044] like Figure 2 As shown, a sealing groove is provided on the surface of each blade 124 facing the end cover 14, and a sealing strip 123 is provided in the sealing groove. This arrangement can improve the sealing between the blade 124 and the end cover 14, and effectively prevent the problem of refrigerant leakage.

[0045] Preferably, the number of blades 124 is N, wherein 3≤N≤20. Such an arrangement can effectively improve the compression performance of the compression mechanism.

[0046] According to another embodiment of the present application, there are multiple substrates 125, each of which is provided with multiple blades 124, and the multiple substrates 125 are arranged in a vertical direction, and the exhaust passages 122 formed on each substrate 125 are arranged in a connected manner. Figure 6 and Figure 7 As shown, there are two bases 125, each of which is provided with a plurality of blades 124, and a compression channel 13 is formed between the blades 124 on each base 125. The two bases 125 can be formed in one piece, or can be provided in a split structure, and the two bases are provided in a synchronously rotating manner. Such an arrangement effectively increases the displacement of the compression mechanism and improves the practicality of the compression mechanism. In this embodiment, the blades 124 on adjacent bases 125 are arranged one-to-one, that is, the blades in the upper and lower positions correspond. Alternatively, the blades 124 on adjacent bases 125 are arranged in a staggered manner, that is, one blade on the base below can correspond to two blades on the upper base.

[0047] The cross section of the base 125 is circular, and the compression mechanism further comprises a driving part, the output shaft of the driving part is connected to the base 125, and the base 125 and the output shaft are coaxially arranged. Such an arrangement can reduce the difficulty of processing the base and the driving part, and improve the reliability of the compression mechanism.

[0048] The compression mechanism in the above embodiment can also be used in the technical field of compressor equipment, that is, according to another aspect of the present invention, a compressor is provided. The compressor comprises a compression mechanism 1. The compression mechanism 1 is the compression mechanism in the above embodiment.

[0049] Specifically, Figure 1 As shown, the compressor includes a housing 3, a support frame 18 and a driving unit. The support frame 18 is arranged in the housing 3, and the end cover 14 of the compression mechanism 1 is connected to the support frame 18 to form a receiving chamber for accommodating the base 125 and the blades 124. The driving unit is arranged in the housing 3, and the output shaft of the driving unit passes through the support frame 18 and is connected to the base 125, and the driving unit can drive the base 125 to make a circular motion. This arrangement makes the structure of the compressor simple, with only one friction pair, reducing the problem of refrigerant leakage caused by wear of the compression mechanism.

[0050] In order to further improve the stability of the compressor, the compressor further includes a sealing cover 16. A portion of the sealing cover 16 abuts against the top of the end cover 14. The sealing cover 16 is circumferentially connected to the inner wall of the housing 3, and an exhaust cavity is formed between the side of the sealing cover 16 away from the end cover 14 and the housing 3. A communication channel connecting the exhaust cavity and the exhaust hole is provided on the sealing cover 16. The end cover 14 is connected to the support frame 18 by setting a fixing pin 17.

[0051] The driving part includes a motor 2, and the output shaft includes a crankshaft 11. A main bearing 19 is sleeved on the first end of the crankshaft 11. The outer peripheral surface of the main bearing 19 is connected to the support frame 18. A secondary bearing 20 is sleeved on the second end of the crankshaft 11. The secondary bearing 20 is arranged on the support member in the housing 3. This arrangement can effectively reduce the friction damage between the crankshaft and the housing and the support frame 18, and improve the service life of the crankshaft. Figure 1 As shown, in this embodiment, the support frame 18 is located above the motor stator, and the side of the support member away from the motor stator and the bottom of the housing 3 are surrounded by an oil pool. Such a setting can effectively improve the installation stability of the crankshaft, wherein the support member can be a support plate. Among them, an air inlet can be set above the support plate, and the refrigerant enters the compressor housing through the air inlet, and then enters the compression channel for compression through the rotation suction of the base and the blades, and then is discharged from the housing through the exhaust pipe to complete a compression cycle.

[0052] Specifically, in order to improve the end face friction wear and leakage caused by the large number of friction pairs of the pump body and the processing problems of the eccentric parts of the crankshaft in the existing compressor, the present application proposes a compression mechanism of a new structure, the working chamber of which is only composed of a non-eccentrically installed base, blades and end covers, and multiple blades form a uniformly distributed spiral channel compression chamber structure on the base. The pumping effect generated by the high-speed rotating blades is used to suck the refrigerant into the compression channel, and the kinetic energy is continuously converted into pressure energy. After reaching a certain pressure, the exhaust valve installed on the outside of the end cover is opened, and the high-pressure refrigerant is discharged from the exhaust port. The compression mechanism simplifies the original pump body structure, reduces the number of matching friction pairs, and is conducive to improving the operating stability and reliability of the compressor. The base does not need to be eccentrically installed, reducing the number of moving matching pairs, and reducing the processing difficulty and process cost of the crankshaft. In the present application, the crankshaft has no eccentric part, which effectively reduces the processing difficulty and process cost of the crankshaft, and at the same time allows the crankshaft to run at high speed.

[0053] The compressor of the present application includes a compression mechanism, a motor and lubricating oil located at the bottom of the shell, the working chamber of the compression mechanism is composed of only a non-eccentrically installed base, blades and end covers, the motor drives the crankshaft and then drives the blades to rotate at high speed, the spiral cavity formed by the blades and the end covers, that is, the compression channel, generates a pumping effect during the rotation process, sucking the refrigerant into the compression channel and continuing to flow along the compression channel, the compression channel cross-section is gradually reduced, the kinetic energy of the refrigerant is continuously converted into pressure energy, and accumulated in the exhaust channel of the roller core, and the air inlet continuously sucks the refrigerant for compression, when the pressure in the exhaust channel reaches a certain value, the exhaust valve installed on the outside of the end cover is opened, and the high-pressure refrigerant is discharged from the exhaust port, completing a compression cycle.

[0054] The compressor structure of the present application simplifies the pump structure of the existing compressor, reduces the pump parts, and is conducive to improving the stability and reliability of the compressor operation. The compression mechanism reduces the number of matching friction pairs, thereby reducing the friction and wear between the end faces and improving the efficiency of the compressor. The rotating part base does not need to be installed eccentrically, reducing the motion matching between the crankshaft and the base. The crankshaft has no eccentric part, which reduces the machining difficulty and process cost of the crankshaft and reduces the difficulty of assembly. The crankshaft without an eccentric part allows high-speed operation driven by a motor, which improves the compression performance of the compressor.

[0055] Specifically, in another embodiment of the present application, the compressor includes a compression mechanism 1, a motor 2 and lubricating oil located at the bottom of the shell 3, the compression mechanism 1 includes a base, a compression channel 13 distributed on the base, an end cover 14, a crankshaft 11 driving the base to rotate, a main bearing 19 and a secondary bearing 20 supporting the crankshaft, an exhaust valve 15 located at the center of the end cover, and a bracket 18. The base is provided with blades 124, the compression channel 13 surrounded by adjacent blades 124, the blade end surface is provided with a sealing strip 123, and the exhaust channel 122 is formed at the geometric center of the base. The blade 124 structure on the end surface of the base is evenly distributed around the central axis of the base. The blade 124 and the base 125 are an integral structure. The boundary curve of the blade 124, that is, the blade profile, conforms to the logarithmic spiral distribution, and the logarithmic spiral is recorded as: r = r g e θtanα .

[0056] When the bottom surface of the compression channel is an inclined plane or a curved surface, along the direction of the compression channel 13, that is, from the outer diameter to the inner diameter, the thickness of the base 125 gradually increases. Accordingly, the cross section of the compression channel 13 gradually decreases.

[0057] The end face of the blade 124 matches the end cover 14, and the blade 124, the end cover 14 and the base 125 constitute a compression chamber. A sealing groove is provided on the end face of the blade 124, and a sealing strip 123 is installed in the sealing groove. The exhaust channel 122 is a columnar structure, and the exhaust channel 122 is connected to the root of the compression chamber. The base and the crankshaft 11 are non-eccentrically installed.

[0058] When the compressor is working, the working chamber of the compression mechanism is composed of only a non-eccentrically installed base, blades and end cover 14. The motor 2 drives the crankshaft 11 and then drives the blades to rotate at high speed. The pumping action generated by the base and blades during the rotation draws the refrigerant into the compression channel 13 and continues to flow along the compression channel 13. The cross-section of the compression channel 13 gradually decreases, continuously converting the kinetic energy of the refrigerant into pressure energy and accumulating it in the exhaust channel 122, while the air inlet 121 continuously draws in the refrigerant for compression. When the pressure in the exhaust channel 122 reaches a certain value, the exhaust valve 15 installed on the outside of the end cover 14 is opened, and the high-pressure refrigerant is discharged from the exhaust port, completing a compression cycle.

[0059] The compressor structure of the present application simplifies the pump structure of the existing compressor, reduces the pump body parts, improves the stability and reliability of the compressor operation, and reduces the number of matching friction pairs, thereby reducing the friction and wear between the end faces and improving the efficiency of the compressor. In addition, the moving roller does not need to be installed eccentrically, reducing the moving matching pairs between the crankshaft and the roller, and the crankshaft has no eccentric part, which reduces the machining difficulty and process cost of the crankshaft, reduces the difficulty of assembly, and allows high-speed operation driven by the motor.

[0060] In another embodiment of the present application, Figure 5 As shown, the joining surface between the blade 124 and the base 125 is an inclined plane.

[0061] like Figure 6 and Figure 7 As shown, the compression mechanism adopts a two-layer or multi-layer blade structure. The multi-layer blade structure adopts a superimposed distribution along the axial direction. Among them, A is the way in which the refrigerant enters the compression channel, B is the direction in which the refrigerant is discharged from the exhaust channel, and F is the direction of blade rotation.

[0062] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0063] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0064] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compression mechanism, characterized in that: include: Base body (125); Blades (124), the blades (124) being multiple, the multiple blades (124) being connected to the base (125), a compression channel (13) being formed between adjacent blades (124), the width of the cross section of the compression channel (13) being gradually reduced inwardly along the radial direction of the base (125); The plurality of blades (124) are arranged to extend inwardly along the radial direction of the base (125), an exhaust channel (122) is formed between the ends of the plurality of blades (124) near the geometric center of the base (125), and the compression channel (13) is connected to the exhaust channel (122); There are a plurality of bases (125), each of which is provided with a plurality of blades (124). The plurality of bases (125) are arranged in a vertical direction, and the exhaust passages (122) formed on each of the bases (125) are arranged in a connected manner.

2. The compression mechanism according to claim 1, characterized in that: The profiles of the plurality of blades (124) directed inwardly in the radial direction are logarithmic spirals, and the logarithmic spirals are obtained by the following formula: r＝r g e θtanα ， Wherein, r is the coordinate of the point on the logarithmic spiral line along the radial direction of the substrate (125); θ is the coordinate of a point on the logarithmic spiral line along the circumferential direction of the substrate (125); r g is the radius of the root of the logarithmic spiral; α is the helix angle of the logarithmic spiral; e is a natural constant.

3. The compression mechanism according to claim 1, characterized in that: The plurality of blades (124) are integrally arranged with the base (125).

4. The compression mechanism according to claim 1, characterized in that: The surface between the adjacent blades (124) of the base (125) forms the bottom surface of the compression channel (13), and the bottom surface is arranged in the form of an arc surface, a horizontal surface or an inclined surface.

5. The compression mechanism according to any one of claims 1 to 4, characterized in that: The compression mechanism also includes: An end cover (14), wherein the end cover (14) is arranged opposite to the plurality of blades (124), the end cover (14) is arranged opposite to the base (125), the compression passage (13) is surrounded by the end cover (14), the blades (124) and the base (125), and an exhaust hole is provided on the end cover (14), and the exhaust hole is connected to the exhaust passage (122).

6. The compression mechanism according to claim 5, characterized in that: The compression mechanism also includes: An exhaust valve is connected to the end cover (14), the exhaust valve having a sealing position for sealing the exhaust hole and an opening position for opening the exhaust hole.

7. The compression mechanism according to claim 6, characterized in that: A sealing groove is provided on the surface of each blade (124) facing the end cover (14), and a sealing strip (123) is provided in the sealing groove.

8. The compression mechanism according to claim 1, characterized in that: The number of the blades (124) is N, wherein 3≤N≤20.

9. The compression mechanism according to claim 1, characterized in that: The blades (124) on adjacent substrates (125) are arranged in a one-to-one correspondence, or the blades (124) on adjacent substrates (125) are arranged in a staggered manner.

10. The compression mechanism according to claim 1, characterized in that: The cross section of the base (125) is circular, and the compression mechanism further comprises a driving part, an output shaft of the driving part is connected to the base (125), and the base (125) and the output shaft are coaxially arranged.

11. A compressor, comprising a compression mechanism (1), characterized in that: The compression mechanism (1) is the compression mechanism according to any one of claims 1 to 10.

12. The compressor according to claim 11, characterized in that The compressor comprises: Housing (3); a support frame (18), the support frame (18) being arranged in the housing (3), the end cover (14) of the compression mechanism (1) being connected to the support frame (18) to form a receiving chamber for receiving the base (125) and the blade (124); A driving unit is arranged in the housing (3); an output shaft of the driving unit passes through the support frame (18) and is connected to the base (125); and the driving unit can drive the base (125) to perform circular motion.

13. The compressor according to claim 12, characterized in that The compressor also includes: A sealing cover (16), a portion of which is in contact with the top of the end cover (14), the sealing cover (16) is circumferentially connected to the inner wall of the shell (3), an exhaust cavity is formed between the side of the sealing cover (16) away from the end cover (14) and the shell (3), and a connecting channel connecting the exhaust cavity and the exhaust hole is provided on the sealing cover (16).

14. The compressor according to claim 12, characterized in that The driving part comprises a motor (2), the output shaft comprises a crankshaft (11), a main bearing (19) is sleeved on the first end of the crankshaft (11), the outer peripheral surface of the main bearing (19) is connected to the support frame (18), and a secondary bearing (20) is sleeved on the second end of the crankshaft (11), and the secondary bearing (20) is arranged on a support member in the housing (3).

15. The compressor according to claim 14, characterized in that The support frame (18) is located above the motor stator, and a side of the support member away from the motor stator and the bottom of the housing (3) are arranged to form an oil pool.

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