Gas compressor and engine

Abstract

The invention relates to the technical field of aviation, and discloses a gas compressor and an engine, and the gas compressor comprises a casing, a rotor blade and an adjusting unit. By arranging the adjusting unit, the adjusting unit can control switching between the communicating state and the non-communicating state between the first cavity and the second cavity in the casing, that is, when the rotating speed of the gas compressor is the medium-low rotating speed, the adjusting unit controls the second cavity to be in the first state, and the adjusting unit controls the second cavity to be in the non-communicating state; and the air flow blocked between the blade tip part and the inner wall of the casing flows into the second cavity, so that the surge phenomenon of the air compressor is avoided, and the technical effect of improving the working performance of the air compressor is achieved. When the rotating speed of the gas compressor is high, the adjusting unit controls the second cavity to be in the second state, the second cavity is closed, and the situation that friction between gas flows is increased due to existence of the second cavity can be avoided, so that energy loss in the gas compressor is reduced, and heat insulation efficiency of the gas compressor is prevented from being reduced; and therefore, the technical effect of reducing the oil consumption of the engine and the oil consumption of the engine is achieved.

Description

Technical Field

[0001] The present invention relates to the field of aviation technology, and in particular to a compressor and an engine. Background Art

[0002] As one of the core components of the engine, the performance of the compressor can directly affect the performance of the aircraft engine. The existing compressor with medium and low speed (the compressor speed is not higher than 80% of the preset speed) is prone to surge, that is, the low-frequency and high-amplitude airflow oscillation along the compressor axis, which is prone to blockage and stall inside the compressor, and even damage to other components in the compressor, resulting in the compressor not being able to work normally.

[0003] Casing treatment is a term in aviation science and technology published in 2003. As a compressor stabilization technology with simple structure and high reliability, it has been widely used in various compressor engineering applications. The existing casing treatment method is to set vent holes or grooves in the casing to evacuate and inject air from the airflow at the position where blockage and stall are likely to occur in the casing, thereby achieving the effect of improving the gas flow capacity at the blockage position and delaying the occurrence of stall at the stall position, so that the stable working margin of the compressor is improved. At the same time, the vent holes and grooves have little effect on the insulation efficiency of medium and low speed compressors (the speed of the compressor is not higher than 80% of the preset speed). When the compressor is running at a high speed (the speed of the compressor is higher than 80% of the preset speed), the compressor has a higher surge margin and is not prone to surge. However, due to the rapid inflow and outflow of air in the vent holes and grooves, friction between gases generates heat, which increases energy loss and causes a decrease in the insulation efficiency of the high-speed compressor, which leads to an increase in the fuel consumption rate of the compressor. In addition, the high-speed compressor itself has a high fuel consumption rate, which greatly increases the energy loss of the compressor. Summary of the invention

[0004] In view of this, the present invention provides a compressor and an engine to solve the problem that although the existing casing treatment can solve the surge problem of medium and low speed compressors, when the compressor is at a high speed, the casing treatment is likely to reduce the insulation efficiency of the compressor, resulting in an increase in the fuel consumption rate of the compressor.

[0005] In a first aspect, the present invention provides a compressor, comprising:

[0006] A casing, comprising a first cavity, a second cavity being provided inside the casing, the second cavity being connected to the first cavity, the second cavity having a first state of being connected to the first cavity and a second state of being not connected to the first cavity;

[0007] a rotor blade, rotatably connected in the first cavity, the rotor blade comprising a blade tip, the blade tip being spaced apart from the second cavity;

[0008] An adjustment unit is arranged inside the casing, between the second cavity and the blade tip, and is used for changing the first state and the second state of the second cavity.

[0009] Beneficial effect: By setting the adjustment unit, the adjustment unit can control the on-off between the first cavity and the second cavity, that is, when the speed of the compressor is medium or low, the adjustment unit controls the second cavity to be in the first state, so that the airflow blocked between the tip of the blade and the inner wall of the casing flows into the second cavity, avoiding the compressor from surging, thereby achieving the technical effect of improving the working performance and safety of the compressor. When the speed of the compressor is high, the adjustment unit controls the second cavity to be in the second state, closes the second cavity, and can avoid the existence of the second cavity to increase the friction between the airflow, thereby reducing the energy loss in the compressor, so as to increase the insulation efficiency of the compressor, and then achieve the technical effect of reducing the fuel consumption rate and fuel consumption of the engine. Based on this, the transition between the first state and the second state of the second cavity can be adjusted according to the speed of the compressor, thereby achieving the technical effect of improving the working performance of the compressor.

[0010] In an optional embodiment, the second cavity is arranged in an annular shape;

[0011] The adjustment unit comprises:

[0012] a fixed structure, annularly arranged on one side of the second cavity close to the first cavity, and along the circumferential direction of the fixed structure, the fixed structure is provided with a first communicating groove and a first shielding structure, the position of the first communicating groove corresponds to the position of the blade tip, and the first communicating groove is connected with the first cavity;

[0013] The movable structure is disposed in the second cavity and has a third state in which the first communicating groove is connected to the second cavity, and a fourth state in which the first communicating groove is not connected to the second cavity.

[0014] Beneficial effect: The first connecting groove and the first shielding structure can divide the connecting part of the second cavity and the first cavity into multiple sections, so that the second cavity is connected to the first cavity through the first connecting groove, and the second cavity is disconnected from the first cavity through the first shielding structure. Based on this, the first connecting groove and the second cavity are in a third state of connection, and the first connecting groove and the second cavity are in a fourth state of non-connection can be switched through the movable structure, so as to achieve the technical effect of the convenience of switching the first state and the second state according to the speed of the compressor.

[0015] In an optional embodiment, a plurality of first connecting grooves are arranged at intervals along the circumferential direction of the casing.

[0016] Beneficial effect: By setting up multiple first connecting grooves, the connecting points between the first connecting grooves and the second cavity can be increased, and the channels for the airflow to enter the second cavity can be increased, so as to avoid the occurrence of surging phenomenon when the compressor is in medium and low speed states, thereby achieving the technical effect of improving the working performance of the compressor.

[0017] In an optional implementation, the activity structure includes:

[0018] The adjusting structure is annularly arranged in the second cavity and is located on a side of the fixing structure away from the first cavity. Along the circumferential direction of the adjusting structure, the fixing structure includes a second shielding structure and a second connecting groove, and the size of the second shielding structure is not less than the size of the first connecting groove;

[0019] A driving structure is disposed in the second cavity, and the driving structure is connected to the adjusting structure, and is used to drive the adjusting structure to rotate, so that the second connecting groove has the third state in which it is connected to the first connecting groove, and the second shielding structure has the fourth state in which it is arranged relative to the second connecting groove.

[0020] Beneficial effect: The drive structure drives the adjustment structure to rotate around the axis direction of the casing. When the drive structure drives the adjustment structure to rotate to the third state in which the second connecting groove is connected to the first connecting groove, the first cavity is in the first state in which it is connected to the second cavity. When the drive structure drives the adjustment structure to rotate to the fourth state in which the second shielding structure and the second connecting groove are arranged relative to each other, the second shielding structure closes the first connecting groove, and the first cavity and the second cavity are in the second state in which they are not connected. Based on this, automatic adjustment between the first state and the second state of the second cavity can be achieved without manually driving the adjustment structure, thereby achieving the technical effect of improving the ease of adjustment of the first state and the second state. At the same time, by ensuring that the size of the second shielding structure is not less than the size of the first connecting groove, it is ensured that the second shielding structure can completely shield the first connecting groove, thereby ensuring the stability of the second state in which the first cavity and the second cavity are not connected.

[0021] In an optional implementation, the driving structure includes:

[0022] A driving element is disposed in the casing;

[0023] A first rotating element, one side of which is connected to the driving element;

[0024] The second rotating element is disposed on a side of the second shielding structure away from the first cavity, and the second rotating element is connected to the other side of the first rotating element.

[0025] Beneficial effect: The driving element drives the reciprocating rotation of the second rotating element through the first rotating element, and further drives the reciprocating rotation of the adjusting structure, so that the second shielding structure of the adjusting structure is arranged relative to the first connecting groove or the second connecting groove is in a connecting state with the first connecting groove.

[0026] In an optional embodiment, the driving element is a motor, the first rotating element is a gear, the second rotating element is a gear tooth, and the gear is meshed with the gear tooth.

[0027] Beneficial effect: Through the meshing between the gear and the gear teeth, the first rotating element drives the second rotating element to rotate, and further drives the rotation of the adjustment structure to realize the conversion between the third state and the fourth state. Based on this, through the reciprocating rotation between the gear and the gear teeth, the rotation angle of the driving element does not exceed 5° to realize the conversion between the first state and the second state, so as to achieve the technical effect of improving the simplicity of the conversion between the first state and the second state.

[0028] In an optional embodiment, the size of the second connecting groove is not less than the size of the first connecting groove;

[0029] And / or, the second cavity includes a first accommodating space, a second accommodating space and a third accommodating space, the first accommodating space is provided with a fixed structure, the second accommodating space is provided with a movable structure, the third accommodating space is provided on a side of the second accommodating space away from the first accommodating space, and a cross section is made along a direction perpendicular to the axis of the casing, and along a direction located on the cross section and parallel to the axis of the casing, the size of the second accommodating space is larger than the size of the first accommodating space, and larger than the size of the third accommodating space.

[0030] Beneficial effect: By limiting the size relationship between the first connecting groove and the second connecting groove, the boundary position of the second connecting groove along the axial direction and the circumferential direction coincides with the boundary position of the first connecting groove. Based on this, it can be ensured that the second cavity is in the maximum connection state with the first cavity through the first connecting groove, increasing the flow area of ​​the airflow in the casing, so as to achieve the technical effect of improving the flow efficiency of the airflow;

[0031] And / or, the position of the adjustment structure in the radial direction can be limited by the first accommodation space and the third accommodation space, and the position of the adjustment structure can be limited without other fixed structures, thereby achieving the technical effect of improving the simplicity of the compressor structure. At the same time, it can avoid the change of the position of the movable structure and affect the stability of the compressor movement, thereby achieving the technical effect of improving the stability of the compressor operation.

[0032] In an optional embodiment, the length direction of the first connecting groove is perpendicular to the chord length direction of the rotor blade;

[0033] And / or, the length direction of the first connecting groove and the radial direction of the casing form an angle with each other;

[0034] And / or, the groove depth of the first connecting groove is in the range of 1 mm-5 mm.

[0035] In an optional embodiment, the angle between the length direction of the first connecting groove and the radial direction perpendicular to the casing axis is in the range of 20° to 40°.

[0036] Beneficial effect: When the first cavity and the second cavity are in a non-connected state, the structure of the first connecting groove will not affect the insulation efficiency of the high-speed rotating compressor, thereby ensuring that the compressor can be applied to various rotation speeds.

[0037] In a second aspect, the present invention further provides an engine, comprising:

[0038] The compressor described above.

[0039] Beneficial effect: Since the engine includes a compressor, it has the same effect as the compressor, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 is a partial cross-sectional view of a casing in a compressor in this embodiment;

[0042] Figure 2 for Figure 1 A partial enlarged schematic diagram of part A;

[0043] Figure 3 It is a partial structural schematic diagram of the fixed structure in this embodiment;

[0044] Figure 4 It is a partial structural schematic diagram of the adjustment unit in this embodiment;

[0045] Figure 5 is a schematic structural diagram of the driving element and the first rotating element in this embodiment;

[0046] Figure 6Schematic diagram of the positions of the first connecting groove and the blade tip in this embodiment.

[0047] Description of reference numerals:

[0048] 1. Casing; 101. first cavity; 102. second cavity;

[0049] 2. Rotor blades;

[0050] 3. Adjustment unit;

[0051] 301, first communicating groove;

[0052] 302, movable structure; 3021, adjustment structure; 30211, second connecting groove; 30212, second shielding structure;

[0053] 3022, driving structure; 30221, driving element; 30222, first rotating element; 30223, second rotating element;

[0054] 303. A first shielding structure. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0056] Combine the following Figures 1 to 6 , describing an embodiment of the present invention.

[0057] According to an embodiment of the present invention, on the one hand, there is provided a compressor, comprising:

[0058] The casing 1 comprises a first cavity 101, a second cavity 102 is arranged inside the casing 1, the second cavity 102 is connected to the first cavity 101, and the second cavity 102 has a first state of being connected to the first cavity 101 and a second state of being not connected to the first cavity 101;

[0059] The rotor blade 2 is rotatably connected in the first cavity 101, and the rotor blade 2 includes a blade tip portion, and the blade tip portion is spaced apart from the second cavity 102;

[0060] The adjustment unit 3 is disposed inside the casing 1 and between the second cavity 102 and the blade tip, and is used for changing the second cavity 102 between the first state and the second state.

[0061] In the compressor of this embodiment, by setting the adjustment unit 3, the adjustment unit 3 can control the on-off between the first cavity 101 and the second cavity 102, that is, when the speed of the compressor is medium or low, the adjustment unit 3 controls the second cavity 102 to be in the first state, so that the airflow blocked between the blade tip and the inner wall of the casing 1 flows into the second cavity 102, avoiding the compressor from surging, thereby achieving the technical effect of improving the working performance of the compressor. When the speed of the compressor is high, the adjustment unit 3 controls the second cavity 102 to be in the second state, closes the second cavity 102, and can avoid the existence of the second cavity 102 to increase the friction between the airflow inside the compressor, thereby reducing the energy loss in the compressor, so as to avoid the decrease in the insulation efficiency of the compressor, and then achieve the technical effect of reducing the fuel consumption rate of the compressor and the fuel consumption of the engine. Based on this, the transition between the first state and the second state of the second cavity 102 can be adjusted according to the speed of the compressor, thereby achieving the technical effect of improving the working performance of the compressor.

[0062] The rotor blades 2 are rotatably connected to the first cavity 101 via a rotating shaft disposed in the casing 1 .

[0063] In addition, combined Figure 4 As shown, in this embodiment, the second cavity 102 is arranged in a ring shape;

[0064] The adjustment unit 3 comprises:

[0065] The fixed structure is annularly arranged on one side of the second cavity 102 close to the first cavity 101. Along the circumferential direction of the fixed structure, the fixed structure is provided with a first connecting groove 301 and a first shielding structure 303. The position of the first connecting groove 301 corresponds to the position of the blade tip, and the first connecting groove 301 is connected to the first cavity 101.

[0066] The movable structure 302 is movably connected in the second cavity 102 and has a third state in which the first connecting groove 301 is connected with the second cavity 102 and a fourth state in which the first connecting groove 301 is disconnected from the second cavity 102 .

[0067] By setting a fixed structure, the first connecting groove 301 and the first shielding structure 303 of the fixed structure can divide the connecting part of the second cavity 102 and the first cavity 101 into multiple sections, so that the second cavity 102 is connected to the first cavity 101 through the first connecting groove 301, and the second cavity 102 is disconnected from the first cavity 101 through the first shielding structure 303. Based on this, the first connecting groove 301 and the second cavity 102 are in a third state of connection, and the first connecting groove 301 and the second cavity 102 are in a fourth state of non-connection can be realized through the movable structure 302, so as to achieve the technical effect of the convenience of switching the first state and the second state according to the rotation speed of the compressor. Further, along the circumferential direction of the casing 1, a plurality of first connecting grooves 301 are provided. Based on this, the connection points between the first connecting groove 301 and the second cavity 102 can be increased, and the number of channels for airflow to enter the second cavity 102 can be increased to avoid the compressor from surging when it is in a medium and low speed state, thereby achieving the technical effect of improving the working performance of the compressor. Among them, the number of the first connecting grooves 301 can be specifically within the range of 100-160, and they are evenly arranged on the fixed structure along the circumferential direction of the casing 1.

[0068] Of course, in other embodiments, the number of the first connecting grooves 301 can be adjusted according to different designs of the compressor. Specifically, the number of the first connecting grooves 301 can be in the range of 1-100, or more than 160, all within the scope of the present application.

[0069] Of course, in other embodiments, a fixed structure may not be provided, but one end of the movable structure 302 may be fixed in the casing 1, and the other end of the movable structure 302 may reciprocate linearly relative to the casing 1 along the axial direction. When the movable structure 302 moves to block the second cavity 102, the second cavity 102 is in the second state. When the movable structure 302 moves away from the second cavity 102, the second cavity 102 is in the first state. The conversion between the first state and the second state can also be achieved.

[0070] In addition, combined Figure 4 As shown, the activity structure 302 includes:

[0071] The adjusting structure 3021 is annularly disposed in the second cavity 102, and is located on a side of the fixed structure away from the first cavity 101. Along the circumferential direction of the adjusting structure 3021, the fixed structure includes a second shielding structure 30212 and a second connecting groove 30211. The size of the second shielding structure 30212 is equal to the size of the first connecting groove 301.

[0072] The driving structure 3022 is disposed in the second cavity 102. The driving structure 3022 is connected to the adjusting structure 3021 and is used to drive the adjusting structure 3021 to rotate so that the second connecting groove 30211 has a third state in which it is connected to the first connecting groove 301, and the second shielding structure 30212 is in a fourth state in which it is relatively arranged with the second connecting groove 30211.

[0073] Specifically, the drive structure 3022 drives the adjustment structure 3021 to rotate around the axis direction of the rotating shaft. When the drive structure 3022 drives the adjustment structure 3021 to rotate to the third state in which the second connecting groove 30211 is connected to the first connecting groove 301, the first cavity 101 is in the first state of connection with the second cavity 102. When the drive structure 3022 drives the adjustment structure 3021 to rotate to the fourth state in which the second shielding structure 30212 is relatively arranged with the second connecting groove 30211, the second shielding structure 30212 forms a closure on the first connecting groove 301, and the first cavity 101 and the second cavity 102 are in the second state of non-connection. Based on this, the automatic adjustment between the first state and the second state of the second cavity 102 can be achieved without manual driving of the adjustment structure 3021, thereby achieving the technical effect of improving the simplicity of adjustment of the first state and the second state.

[0074] Furthermore, by making the size of the second shielding structure 30212 equal to the size of the first connecting groove 301 , it is ensured that the second shielding structure 30212 can completely shield the first connecting groove 301 , thereby ensuring the stability of the second non-connected state between the first cavity 101 and the second cavity 102 .

[0075] In this embodiment, the size of the second connecting groove 30211 is equal to the size of the first connecting groove 301, so that the second connecting groove 30211 is along the axis direction of the rotating shaft (i.e. Figure 3 The boundary positions in the X direction (as shown) and the circumferential direction coincide with the boundary positions of the first connecting groove 301. Based on this, it can be ensured that the second cavity 102 is in a maximum connection state with the first cavity 101 through the first connecting groove 301, and the flow area of ​​the airflow in the casing 1 is increased, so as to achieve the technical effect of improving the flow efficiency of the airflow.

[0076] Of course, in other embodiments, the size of the second shielding structure 30212 may also be larger than the size of the first connecting groove 301 , and the size of the second connecting groove 30211 may be larger than the size of the first connecting groove 301 .

[0077] As a convertible implementation, the activity structure 302 may also include:

[0078] The driving structure 3022 is disposed in the casing 1. Specifically, the driving structure 3022 may be a hydraulic cylinder;

[0079] The adjusting structure 3021 is a cylindrical structure, which is connected to the driving structure 3022 . The driving structure 3022 moves along the axis of the rotating shaft, so that the adjusting structure 3021 can transform the first state and the second state of the second cavity 102 .

[0080] Specifically, the shape of the adjustment structure 3021 is the same as the shape of the opening of the second cavity 102. The position of the opening of the second cavity 102 is Figure 2 The bottom end shown is the side of the second cavity 102 close to the first cavity 101 and the position where the second cavity 102 is connected with the first cavity 101. When the driving structure 3022 drives the adjusting structure 3021 to move in the direction close to the second cavity 102 along the axis of the rotating shaft, the adjusting structure 3021 can close the second cavity 102, so that the second cavity 102 and the first cavity 101 are in a second state of non-communication. When the driving structure 3022 drives the adjusting structure 3021 to move away from the second cavity 102 along the axis of the rotating shaft, the adjusting structure 3021 can open the second cavity 102, so that the second cavity 102 and the first cavity 101 are in a first state of communication.

[0081] In addition, in this embodiment, the driving structure 3022 includes:

[0082] The driving element 30221 is arranged in the casing 1;

[0083] A first rotating element 30222 , one side of which is connected to the driving element 30221 ;

[0084] The second rotating element 30223 is disposed on one side of the second shielding structure 30212 away from the first cavity 101 , and the second rotating element 30223 is connected to the other side of the first rotating element 30222 .

[0085] Based on this, the driving element 30221 drives the reciprocating rotation of the second rotating element 30223 through the first rotating element 30222, and further drives the reciprocating rotation of the adjusting structure 3021, so that the second shielding structure 30212 of the adjusting structure 3021 is arranged relative to the first connecting groove 301 or the second connecting groove 30211 is in a connecting state with the first connecting groove 301.

[0086] Specifically, the driving element 30221 is a motor, the first rotating element 30222 is a gear, and the second rotating element 30223 is a gear. Through the meshing between the gear and the gear, the first rotating element 30222 drives the second rotating element 30223 to rotate, and further drives the adjustment structure 3021 to rotate, so as to achieve the conversion between the third state and the fourth state. Based on this, through the reciprocating rotation between the gear and the gear, the rotation angle of the driving element 30221 does not exceed 5° to achieve the conversion between the first state and the second state, so as to achieve the technical effect of improving the simplicity of the conversion between the first state and the second state.

[0087] Of course, in other embodiments, according to different structures of the compressor, the first rotating element 30222 may be a first pulley, the second rotating element 30223 may be a second pulley, and the first pulley is connected to the second pulley through a belt. The second pulley is sleeved on a side of the adjustment structure 3021 away from the first cavity 101, and the second pulley is arranged at a position where the adjustment structure 3021 is not provided with the second connecting groove 30211. Figure 2 The horizontal dimension shown is smaller than the adjustment structure 3021 along Figure 2 The horizontal dimension shown is to avoid the position of the second pulley from blocking the second connecting groove 30211 and affecting the flow speed of the airflow.

[0088] In addition, combined Figure 1 As shown, in this embodiment, the second cavity 102 includes a first accommodating space, a second accommodating space and a third accommodating space;

[0089] Among them, a fixed structure is provided in the first accommodating space, a movable structure 302 is provided in the second accommodating space, and the third accommodating space is provided on a side of the second accommodating space away from the first accommodating space. A cross section is made along a direction perpendicular to the axis of the casing 1, and along a direction located on the cross section and parallel to the axis of the casing 1, the size of the second accommodating space is larger than the size of the first accommodating space, and larger than the size of the third accommodating space.

[0090] Based on this, the first accommodation space and the third accommodation space can adjust the structure 3021 along the Figure 2 The position of the adjustment structure 3021 can be limited by the vertical direction shown in the figure, and no other fixed structure is required to limit the position of the adjustment structure 3021, thereby achieving the technical effect of improving the simplicity of the compressor structure. At the same time, it can prevent the position of the movable structure 302 from changing and affecting the stability of the compressor movement, thereby achieving the technical effect of improving the stability of the compressor operation.

[0091] In this embodiment, combined with Figure 6 As shown, the length direction of the first connecting groove 301 is perpendicular to the chord length direction of the rotor blade 2, and the first connecting groove 301 is along Figure 3The leftmost side in the horizontal direction shown in FIG. 1 is beyond the leading edge of the rotor blade 2, and the first connecting groove 301 is along Figure 3 The rightmost side in the horizontal direction shown does not exceed the trailing edge of the rotor blade 2. The leading edge of the blade is the edge of the blade that the airflow first contacts, and the trailing edge of the blade is arranged opposite to the leading edge of the blade.

[0092] The length direction of the first connecting groove 301 forms an angle with the radial direction of the casing 1, that is, Figure 3 As shown, the length direction of the first connecting groove 301 forms an angle with the R axis. The angle is in the range of 20° to 40°, the groove depth of the first connecting groove 301 is in the range of 1mm-5mm, and the groove depth of the second connecting groove 30211 is 0.5-1 times the groove depth of the first connecting groove 301.

[0093] Based on this, when the first cavity 101 and the second cavity 102 are in a non-connected state, the setting of the first connecting groove 301 will not affect the insulation efficiency of the high-speed rotating compressor, so as to ensure that the compressor can be applied to various rotation speeds.

[0094] According to an embodiment of the present invention, on the other hand, there is also provided an engine, comprising the compressor of this embodiment. The engine has the same effect as the compressor, which will not be described in detail here.

[0095] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A compressor, characterized in that: include: A casing (1) comprises a first cavity (101), a second cavity (102) is provided inside the casing (1), the second cavity (102) is connected to the first cavity (101), and the second cavity (102) has a first state of being connected to the first cavity (101) and a second state of being not connected to the first cavity (101); a rotor blade (2) rotatably connected in the first cavity (101), the rotor blade (2) comprising a blade tip portion, the blade tip portion being spaced apart from the second cavity (102); An adjustment unit (3) is arranged inside the casing (1), between the second cavity (102) and the blade tip, and is used to transform the second cavity (102) between the first state and the second state.

2. The compressor according to claim 1, characterized in that: The second cavity (102) is arranged in an annular shape; The adjustment unit (3) comprises: a fixed structure, arranged in an annular shape on one side of the second cavity (102) close to the first cavity (101); along the circumferential direction of the fixed structure, the fixed structure is provided with a first connecting groove (301) and a first shielding structure (303); the position of the first connecting groove (301) corresponds to the position of the blade tip; the first connecting groove (301) is connected to the first cavity (101); The movable structure (302) is arranged in the second cavity (102) and has a third state in which the first connecting groove (301) is connected to the second cavity (102), and a fourth state in which the first connecting groove (301) is not connected to the second cavity (102).

3. The compressor according to claim 2, characterized in that: A plurality of first connecting grooves (301) are arranged at intervals along the circumferential direction of the casing (1).

4. The compressor according to claim 3, characterized in that: The activity structure (302) includes: The adjusting structure (3021) is annularly arranged in the second cavity (102), located on a side of the fixed structure away from the first cavity (101); along the circumferential direction of the adjusting structure (3021), the fixed structure comprises a second shielding structure (30212) and a second connecting groove (30211); the size of the second shielding structure (30212) is not smaller than the size of the first connecting groove (301); A driving structure (3022) is disposed in the second cavity (102), and the driving structure (3022) is connected to the adjusting structure (3021) and is used to drive the adjusting structure (3021) to rotate, so that the second connecting groove (30211) has the third state of being connected to the first connecting groove (301), and the second shielding structure (30212) is in the fourth state of being arranged relative to the second connecting groove (30211).

5. The compressor according to claim 4, characterized in that: The driving structure (3022) comprises: A driving element (30221) is disposed in the casing (1); A first rotating element (30222), one side of which is connected to the driving element (30221); The second rotating element (30223) is arranged on a side of the second shielding structure (30212) away from the first cavity (101), and the second rotating element (30223) is connected to the other side of the first rotating element (30222).

6. The compressor according to claim 5, characterized in that: The driving element (30221) is a motor, the first rotating element (30222) is a gear, the second rotating element (30223) is a gear tooth, and the gear is meshed with the gear tooth.

7. The compressor according to claim 6, characterized in that: The size of the second connecting groove (30211) is not smaller than the size of the first connecting groove (301); And / or, the second cavity (102) comprises a first accommodating space, a second accommodating space and a third accommodating space, the first accommodating space is provided with a fixed structure, the second accommodating space is provided with a movable structure (302), the third accommodating space is provided on a side of the second accommodating space away from the first accommodating space, and a cross section is made along a direction perpendicular to the axis of the casing (1), and along a direction located on the cross section and parallel to the axis of the casing (1), the size of the second accommodating space is larger than the size of the first accommodating space, and larger than the size of the third accommodating space.

8. The compressor according to any one of claims 2 to 6, characterized in that: The length direction of the first connecting groove (301) is perpendicular to the chord length direction of the rotor blade (2); And / or, the length direction of the first connecting groove (301) and the radial direction of the casing (1) form an angle with each other; And / or, the groove depth of the first connecting groove (301) is in the range of 1 mm-5 mm.

9. The compressor according to claim 8, characterized in that: The angle between the length direction of the first connecting groove (301) and the radial direction perpendicular to the axis of the casing (1) is within the range of 20° to 40°.

10. An engine, characterized in that: include: The compressor according to any one of claims 1 to 9.

Images