Compressor pump body and rolling rotor type compressor

Abstract

The invention belongs to the technical field of compressors, and discloses a compressor pump body and a rolling rotor type compressor, the compressor pump body comprises an air cylinder, blades and a piston, the air cylinder is provided with a containing cavity, and the containing cavity is provided with a blade groove and an air inlet; the blades are slidably arranged in the blade grooves in the radial direction. The piston is eccentrically and rotationally arranged in the containing cavity, one end of the blade abuts against the outer wall of the piston, the containing cavity is divided into a first cavity and a second cavity by the piston and the blade, and the first cavity is communicated with the air inlet; the air cylinder is further provided with a communicating groove, the communicating groove is communicated with the blade groove and the second cavity, a notch is formed in the end, stretching into the blade groove, of the blade, the blade is switched between the communicating state of communicating the communicating groove and the blocking state of blocking the communicating groove, when the blade stretches into the containing cavity, the communicating groove is blocked by the blade, and when the blade completely retracts into the blade groove, the notch is communicated with the communicating groove. By the adoption of the compressor pump body, the piston can rotate reversely, and the rolling rotor type compressor can achieve the power generation function.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor pump body and a rolling rotor type compressor. Background Art

[0002] The traditional gas compression energy storage system on the market must be equipped with a compressor (usually a centrifugal compressor) and an expander (usually a centripetal expander). The expander must first be compressed and stored by the compressor before it can operate to realize the power generation function. Therefore, the entire system is relatively large and complex and urgently needs to be optimized. The traditional rolling rotor compressor, on the other hand, is driven by a motor to rotate the rotor and piston counterclockwise in the accommodating chamber of the cylinder after power is turned on, and the compression function (i.e., compression energy storage) is realized by compressing the inhaled low-pressure refrigerant gas into high-pressure refrigerant gas and then discharging it. Its traditional design only considers the realization of the compression function, but if high-pressure refrigerant gas is applied to the exhaust side of the cylinder, the rotor is pushed to rotate in the opposite direction by the expansion process of the high-pressure refrigerant gas expanding into low-pressure refrigerant gas, and the rotor can drive the motor to generate electricity. In this way, the rolling rotor compressor can realize the function of compression energy storage and take into account the function of expansion power generation, thereby greatly simplifying the gas compression energy storage system.

[0003] However, due to the presence of the exhaust valve plate in the traditional design, the rotor of the rolling rotor compressor cannot achieve reverse rotation. Therefore, it is urgent to design a new compressor pump body and a rolling rotor compressor to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a compressor pump body and a rolling rotor compressor that can have both compression and expansion functions. When power is on, the rolling rotor compressor can compress the refrigerant gas normally; when power is off, the high-pressure refrigerant gas expands to enable the motor rotor to rotate in the opposite direction, thereby driving the motor to generate electricity, so that the rolling rotor compressor can realize the power generation function.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, a compressor pump body is provided, the compressor pump body comprising:

[0007] A cylinder, wherein a receiving cavity is provided in the middle of the cylinder, a blade groove is provided on the side wall of the receiving cavity along the radial direction of the cylinder, and an air inlet is also provided on the side wall of the receiving cavity;

[0008] A blade is slidably disposed in the blade groove along the radial direction of the cylinder;

[0009] A piston is eccentrically rotatably disposed in the accommodating chamber, one end of the blade extending out of the blade groove abuts against an outer wall of the piston, the piston and the blade divide the accommodating chamber into a first cavity and a second cavity, and the first cavity is communicated with the air inlet;

[0010] A connecting groove is provided on at least one end surface of the cylinder, and the connecting groove connects the blade groove and the second cavity. At least one notch is provided on the end surface of one end of the blade extending into the blade groove. The blade switches between a connecting state of connecting to the connecting groove and a blocking state of blocking the connecting groove. When the blade extends into the accommodating cavity, the blade blocks the connecting groove. When the blade is completely retracted into the blade groove, the notch is connected to the connecting groove.

[0011] As an optional technical solution, the connecting groove and the air inlet are respectively located on both sides of the blade groove.

[0012] As an optional technical solution, the communicating groove and the notch are respectively opened on the end surface of the cylinder and the blade on the same side.

[0013] As an optional technical solution, the air inlet is opened on the other end surface of the cylinder.

[0014] As an optional technical solution, a first through hole is radially opened on the outer wall of the cylinder, the first through hole is connected to the blade slot, and the central axis of the first through hole overlaps with the center line of the blade slot.

[0015] As an optional technical solution, the notch of the connecting groove connecting the blade groove is a first notch, the end of the first through hole closest to the center point of the accommodating chamber is the bottom end of the hole, the distance from the bottom end of the hole to the center point of the accommodating chamber is smaller than the distance from the first notch to the center point of the accommodating chamber, a connecting groove is provided on one side of the blade groove along the axial direction of the cylinder, the connecting groove is connected with the bottom end of the hole, and when the blade is fully retracted into the blade groove, the notch is connected with the connecting groove.

[0016] As an optional technical solution, a second through hole is axially opened at one end of the blade groove away from the accommodating cavity, the central axis of the second through hole and the central axis of the first through hole are located in the same plane, and the distance from the second through hole to the center point of the accommodating cavity is greater than the distance from the connecting groove to the center point of the accommodating cavity.

[0017] As an optional technical solution, the cylinder is provided with a positioning hole along the axial direction.

[0018] As an optional technical solution, both side walls of the port of the blade groove connected to the accommodating cavity are chamfered.

[0019] In a second aspect, a rolling rotor type compressor is provided, wherein the rolling rotor type compressor comprises the compressor pump body as described above.

[0020] The beneficial effects of the present invention are:

[0021] The compressor pump body and rolling rotor compressor provided by the present invention, when the rolling rotor compressor is powered on and running, the rolling rotor compressor performs a compression function to compress the refrigerant gas, the motor rotor drives the piston to rotate eccentrically counterclockwise in the accommodating chamber, the first cavity serves as an air intake cavity, and the second cavity serves as a compression cavity, the low-pressure refrigerant gas enters the first cavity from the air inlet, is compressed into a high-pressure refrigerant gas in the second cavity, and then is discharged from the shell of the rolling rotor compressor and enters the high-pressure gas storage device, thereby realizing its compression function; when the rolling rotor compressor is used as an expander for power generation, the second cavity serves as an expansion cavity, the first cavity serves as an exhaust cavity, the high-pressure gas storage device inputs high-pressure refrigerant gas into the compressor pump body, the high-pressure refrigerant gas enters the connecting groove from the notch of the blade, and the connecting groove is connected to the second cavity, so the high-pressure refrigerant gas can enter the second cavity from the connecting groove, the high-pressure refrigerant gas expands in the second cavity to push the piston to rotate eccentrically clockwise in the accommodating cavity, and synchronously drives the motor rotor to rotate to drive the motor to generate electricity, so that the rolling rotor compressor of the present invention can realize the power generation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described in detail below based on the accompanying drawings and embodiments;

[0023] Figure 1 A top view of a compressor pump body in a first state according to an embodiment;

[0024] Figure 2 A top view of the compressor pump body in a second state according to the embodiment;

[0025] Figure 3 A top view of the compressor pump body in a third state according to the embodiment;

[0026] Figure 4 A top view of the compressor pump body in a fourth state according to the embodiment;

[0027] Figure 5 A bottom view of a compressor pump body in a first state according to an embodiment;

[0028] Figure 6 A schematic structural diagram of a compressor pump body in a first state from another perspective according to an embodiment;

[0029] Figure 7 It is a structural schematic diagram of the cylinder described in the embodiment;

[0030] Figure 8It is a cross-sectional view of a rolling rotor type compressor described in an embodiment.

[0031] In the figure:

[0032] 100, compressor pump body; 200, motor rotor; 300, motor stator;

[0033] 1. Cylinder; 11. Accommodating cavity; 111. First cavity; 112. Second cavity; 12. Blade groove; 121. Chamfer; 13. Air inlet; 14. Connecting groove; 141. First notch; 15. First through hole; 151. Bottom end of hole; 16. Connecting groove; 17. Second through hole; 18. Positioning hole; 19. High-voltage contact portion; 110. Sealing portion;

[0034] 2. Blade; 21. Notch;

[0035] 3. Piston;

[0036] 4. Install the cylinder cover;

[0037] 5. Lower cylinder head;

[0038] 6. Middle plate;

[0039] 7. Crankshaft. DETAILED DESCRIPTION

[0040] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] In the description herein, it should be understood that the terms "upper", "lower", "left", "right", etc., and the like, are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0044] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0045] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0046] In a traditional gas compression energy storage system, taking carbon dioxide or other refrigerant gases as an example, the compressor is driven by electric energy to operate, and the compressor compresses the carbon dioxide gas to obtain carbon dioxide supercritical fluid, which is stored in a gas storage device; when power generation is required, the gas storage device releases the carbon dioxide supercritical fluid to drive the turbine to rotate to drive the generator to generate electricity. The power generation process requires the cooperation of two sets of equipment, the compressor and the turbine generator, and the equipment cost is high. Therefore, this embodiment provides a rolling rotor compressor, which can realize both the compressor function and the expander function, so that the piston 3 in the compressor pump body 100 can switch between forward rotation and reverse rotation to realize the compressed gas function and the power generation function to meet the needs of new fields such as new energy storage.

[0047] like Figures 1 to 7As shown, the present embodiment provides a compressor pump body 100, which includes a cylinder 1, a vane 2 and a piston 3. A receiving chamber 11 is provided in the middle of the cylinder 1, a vane groove 12 is provided on the side wall of the receiving chamber 11 along the radial direction of the cylinder 1, and an air inlet 13 is provided on the side wall of the receiving chamber 11; the vane 2 is provided in the vane groove 12 for sliding along the radial direction of the cylinder 1; the piston 3 is provided in the receiving chamber 11 for eccentric rotation, and one end of the vane 2 extending out of the vane groove 12 abuts against the outer wall of the piston 3, and the piston 3 and the vane 2 divide the receiving chamber 11 into a first cavity 11 1 and the second cavity 112, the first cavity 111 is connected to the air inlet 13; a connecting groove 14 is opened on at least one end surface of the cylinder 1, the connecting groove 14 is connected to the blade groove 12 and the second cavity 112, at least one notch 21 is opened on the end surface of the end of the blade 2 extending into the blade groove 12, the blade 2 switches between a connecting state of connecting to the connecting groove 14 and a blocking state of blocking the connecting groove 14, when the blade 2 extends into the accommodating cavity 11, the blade 2 blocks the connecting groove 14, when the blade 2 is completely retracted into the blade groove 12, the notch 21 is connected to the connecting groove 14.

[0048] In this embodiment, a connecting groove 14 is provided on the end surface of the cylinder 1 . In some other embodiments, connecting grooves 14 are provided on both end surfaces of the cylinder 1 .

[0049] In this embodiment, a notch 21 is formed at one end of the blade 2 extending into the blade slot 12 .

[0050] Specifically, when the rolling rotor compressor is powered on, the rolling rotor compressor performs a compression function to compress the refrigerant gas. The motor rotor 200 rotates counterclockwise to drive the crankshaft 7 and the piston 3 to rotate counterclockwise eccentrically in the accommodating chamber 11. The first cavity 111 serves as an air intake cavity, and the second cavity 112 serves as a compression cavity. The low-pressure refrigerant gas enters the first cavity 111 from the air inlet 13, is compressed into a high-pressure refrigerant gas in the second cavity 112, and then is discharged from the housing of the rolling rotor compressor and enters the high-pressure gas storage device, thereby realizing its compression function. When the rolling rotor compressor is used as an expander for power generation, the second cavity 112 serves as a compression cavity. 12 serves as an expansion chamber, and the first cavity 111 serves as an exhaust chamber. The high-pressure gas storage device inputs high-pressure refrigerant gas to the high-pressure contact portion 19 of the compressor pump body 100. The high-pressure refrigerant gas enters the connecting groove 14 from the notch 21 of the blade 2, and the connecting groove 14 is connected to the second cavity 112. Therefore, the high-pressure refrigerant gas enters the second cavity 112 from the connecting groove 14. The high-pressure refrigerant gas expands in the second cavity 112 to push the piston 3 to rotate eccentrically clockwise in the accommodating cavity 11, and synchronously drives the crankshaft 7 to rotate to drive the motor rotor 200 to generate work, thereby enabling the rolling rotor compressor of this embodiment to realize the power generation function.

[0051] Figure 1 is a top view when the piston 3 is at the 0° position; Figure 2It is a top view when the piston 3 rotates 45° counterclockwise or 315° clockwise; Figure 3 It is a top view when the piston 3 rotates 180° counterclockwise or 180° clockwise; Figure 4 It is a top view when the piston 3 rotates 315° counterclockwise or 45° clockwise.

[0052] With the blade 2 fully retracted into the blade slot 12 as the initial state, when the rolling rotor compressor is powered on, as shown in FIG. Figure 1 As shown, the piston 3 is at the 0° position, and the motor rotor 200 rotates counterclockwise to drive the crankshaft 7 and the piston 3 to start rotating counterclockwise, as shown in FIG. Figure 2 As shown, when the piston 3 rotates counterclockwise by 45°, the notch 21 of the blade 2 is just completely disconnected from the connecting groove 14, and the blade 2 blocks the connecting groove 14. The low-pressure refrigerant gas enters the first cavity 111 from the air inlet 13, is compressed into high-pressure refrigerant gas in the second cavity 112, and is stored in the gas storage device. Figure 3 As shown, when the piston 3 rotates 180° counterclockwise, the notch 21 of the blade 2 is farthest from the connecting groove 14, and the blade 2 blocks the connecting groove 14. The low-pressure refrigerant gas continues to enter the first cavity 111 from the air inlet 13, and continues to be compressed into high-pressure refrigerant gas in the second cavity 112 and then stored in the gas storage device. Figure 4 As shown, when the piston 3 rotates counterclockwise by 315°, the notch 21 of the blade 2 begins to communicate with the connecting groove 14. When the piston 3 rotates counterclockwise by 360°, the blade 2 is completely retracted into the blade groove 12, and the piston 3 completes one refrigerant gas compression operation. The relationship between the moving distance of the blade 2 and the rotation angle of the piston 3 is only one embodiment. In some other embodiments, the notch 21 of the blade 2 may just be completely disconnected from the connecting groove 14 when the piston 3 rotates counterclockwise by 25° or 35°, and the notch 21 of the blade 2 begins to communicate with the connecting groove 14 when the piston 3 rotates counterclockwise by 325° or 335°.

[0053] With the blade 2 fully retracted into the blade slot 12 as the initial state, when the rolling rotor compressor needs to be used as an expander, such as Figure 1 As shown, the piston 3 is at the 0° position, the notch 21 of the blade 2 is completely connected with the connecting groove 14, and an instantaneous external force is used, such as starting a motor, and the electronic rotor 200 rotates clockwise to give the piston 3 an initial force, so that the piston 3 starts to rotate clockwise, and the high-pressure refrigerant gas stored in the gas storage device is sucked into the second cavity 112 from the notch 21 of the blade 2 through the connecting groove 14, and the high-pressure refrigerant gas expands in the second cavity 112 to push the piston 3 to continue to rotate clockwise, as shown in FIG. Figure 4As shown, when the high-pressure refrigerant gas expands and pushes the piston 3 to rotate 45° clockwise, the notch 21 of the blade 2 is just completely disconnected from the connecting groove 14, and the blade 2 blocks the connecting groove 14, and the low-pressure refrigerant gas in the first cavity 111 is discharged to the outside from the air inlet 13, as shown in FIG. Figure 3 As shown, when the high-pressure refrigerant gas pushes the piston 3 to rotate 180° clockwise, the notch 21 of the blade 2 is farthest from the connecting groove 14, and the blade 2 blocks the connecting groove 14. The high-pressure refrigerant gas continues to expand in the second cavity 112, and the low-pressure refrigerant gas in the first cavity 111 continues to be discharged to the outside from the air inlet 13, as shown in FIG. Figure 2 As shown, when the high-pressure refrigerant gas expands and pushes the piston 3 to rotate clockwise by 315°, the notch 21 of the blade 2 begins to communicate with the connecting groove 14, and the gas storage device continues to supply high-pressure refrigerant gas from the notch 21 of the blade 2 through the connecting groove 14 into the second cavity 112. The high-pressure refrigerant gas expands in the second cavity 112, pushing the piston 3 to continue to rotate clockwise by inertia. The relationship between the moving distance of the blade 2 and the rotation angle of the piston 3 is only one embodiment. In some other embodiments, the notch 21 of the blade 2 may just be completely disconnected from the connecting groove 14 when the piston 3 rotates clockwise by 25° or 35°, and the notch 21 of the blade 2 begins to communicate with the connecting groove 14 when the piston 3 rotates clockwise by 325° or 335°.

[0054] The cylinder 1 includes a high-voltage contact portion 19 and a sealing portion 110, wherein the high-voltage contact portion 19 surrounds the outer periphery of the sealing portion 110, and the accommodating chamber 11 is opened in the middle of the sealing portion 110. In this embodiment, the connecting groove 14 is opened on the end surface of the sealing portion 110, the blade groove 12 penetrates the sealing portion 110 and extends into the high-voltage contact portion 19, the connecting groove 16 penetrates the two end surfaces of the cylinder 1 along the axial direction of the cylinder 1, is located at the connection between the sealing portion 110 and the high-voltage contact portion 19, and is connected to one side of the blade groove 12, the notch 21 of the blade 2 can simultaneously connect the connecting groove 14 and the connecting groove 16, and the high-pressure refrigerant gas passes through the connecting groove 16, the notch 21 of the blade 2, and the connecting groove 14 in sequence, and finally enters the second cavity 112.

[0055] Optionally, the connecting groove 14 and the air inlet 13 are respectively located on both sides of the blade groove 12, so as to facilitate setting the flow path of the external low-pressure refrigerant gas and the flow path of the high-pressure refrigerant gas.

[0056] Optionally, the connecting groove 14 and the notch 21 are respectively opened on the end surface of the same side of the cylinder 1 and the blade 2, which is convenient for machining. Specifically, the connecting groove 14 is opened on the first side surface of the cylinder 1, and the notch 21 is opened on the second side surface of the blade 2, and the first side surface of the cylinder 1 and the second side surface of the blade 2 are located on the same side.

[0057] Optionally, the air inlet 13 is opened on the other end surface of the cylinder 1. Specifically, the air inlet 13 is located on the back side of the sealing portion 110.

[0058] Optionally, the outer wall of the cylinder 1 is provided with a first through hole 15 along the radial direction of the cylinder 1. The first through hole 15 penetrates the high-pressure contact portion 19 along the radial direction of the cylinder 1 and extends into the sealing portion 110. The first through hole 15 is connected to the blade groove 12, and the central axis of the first through hole 15 overlaps with the central line of the blade groove 12. The first through hole 15 is used to accommodate a reset member, for example, a spring is arranged in the first through hole 15, and the spring is used to push the blade 2 toward the piston 3, so that the blade 2 always abuts against the outer wall of the piston 3. The central axis of the first through hole 15 is arranged to overlap with the central line of the blade groove 12, so as to ensure that the thrust of the reset member does not change direction.

[0059] Optionally, the notch of the connecting groove 14 connecting to the blade groove 12 is a first notch 141, the end of the first through hole 15 closest to the center point of the accommodating chamber 11 is the bottom end 151 of the hole, the distance from the bottom end 151 to the center point of the accommodating chamber 11 is smaller than the distance from the first notch 141 to the center point of the accommodating chamber 11, and a connecting groove 16 is opened on one side of the blade groove 12 along the axial direction of the cylinder 1, the connecting groove 16 is connected to the bottom end 151, and when the blade 2 is fully retracted into the blade groove 12, the notch 21 is connected to the connecting groove 16.

[0060] Optionally, a second through hole 17 is formed at one end of the blade slot 12 away from the accommodating chamber 11 along the axial direction of the cylinder 1, the central axis of the second through hole 17 and the central axis of the first through hole 15 are located in the same plane, and the distance from the second through hole 17 to the center point of the accommodating chamber 11 is greater than the distance from the connecting slot 16 to the center point of the accommodating chamber 11. High-pressure refrigerant gas can enter the connecting slot 16 from the surface of the high-pressure contact portion 19, and can also enter the first through hole 15 from the second through hole 17, and then enter the connecting slot 16 from the first through hole 15.

[0061] Optionally, the cylinder 1 is provided with a positioning hole 18 along its axial direction.

[0062] Optionally, both side walls of the port of the blade groove 12 connected to the accommodating chamber 11 are provided with chamfers 121. When the piston 3 is at the 0° position, two symmetrical cavities are formed between the piston 3 and the blade 2 and the two chamfers 121, respectively, and lubricating oil can be stored in the cavity to prevent abnormal noise caused by oil compression.

[0063] like Figure 8 As shown, the present embodiment further provides a rolling rotor type compressor, which includes the compressor pump body 100 as described above.

[0064] The rolling rotor compressor of this embodiment is a dual-rotor rolling rotor compressor. The compressor pump body 100 includes a crankshaft 7 and two cylinders 1. Each cylinder 1 is matched with blades 2 and pistons 3. The two pistons 2 are transmission-connected to the crankshaft 7. When the dual-rotor rolling rotor compressor generates electricity, the two pistons 2 drive the crankshaft 7 and the motor rotor 200 to alternately expand and do work within one rotation cycle, making the operation smoother.

[0065] The two cylinders 1 are arranged at intervals along the axial direction of the compressor pump body 100. The cylinder 1 located above is the upper cylinder, and the cylinder 1 located below is the lower cylinder. The blade 2 matching the upper cylinder is the upper blade, and the piston 3 matching the upper cylinder is the upper piston. The blade 2 matching the lower cylinder is the lower blade, and the piston 3 matching the lower cylinder is the lower piston.

[0066] Optionally, the compressor pump body 100 further includes an upper cylinder head 4, a lower cylinder head 5 and an intermediate plate 6, wherein the intermediate plate 6 is arranged between the upper cylinder and the lower cylinder, the upper cylinder head 4 is arranged at the top of the upper cylinder, and the lower cylinder head 5 is arranged at the bottom of the lower cylinder.

[0067] Optionally, the rolling rotor compressor of this embodiment also includes a motor rotor 200 and a motor stator 300, wherein the motor stator 300 surrounds the outer circumference of the motor rotor 200, one end of the crankshaft 7 is transmission-connected to the motor rotor 200, and the other end of the crankshaft 7 is transmission-connected to the piston 3 of the compressor pump body 100. When the rolling rotor compressor is powered on, the rolling rotor compressor is used to compress the refrigerant gas, and the rolling rotor compressor converts electrical energy into mechanical energy. The motor rotor 200 drives the piston 3 to compress the refrigerant gas through the crankshaft 7. When the rolling rotor compressor needs to be used as an expander, the high-pressure refrigerant gas drives the piston 3 to rotate in the opposite direction, and the piston 3 drives the motor rotor 200 through the crankshaft 7 to generate electricity, and the rolling rotor compressor converts mechanical energy into electrical energy.

[0068] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A compressor pump body, characterized in that: The compressor pump body (100) comprises: A cylinder (1), wherein a receiving chamber (11) is provided in the middle of the cylinder (1), a blade groove (12) is provided on the side wall of the receiving chamber (11) along the radial direction of the cylinder (1), and an air inlet (13) is also provided on the side wall of the receiving chamber (11); A blade (2) is slidably disposed in the blade groove (12) along the radial direction of the cylinder (1); A piston (3) is eccentrically rotatably disposed in the accommodating chamber (11); one end of the blade (2) extending out of the blade groove (12) abuts against an outer wall of the piston (3); the piston (3) and the blade (2) divide the accommodating chamber (11) into a first cavity (111) and a second cavity (112); the first cavity (111) is in communication with the air inlet (13); A connecting groove (14) is provided on at least one end surface of the cylinder (1), the connecting groove (14) connecting the blade groove (12) and the second cavity (112), at least one notch (21) is provided on the end surface of one end of the blade (2) extending into the blade groove (12), the blade (2) switches between a connecting state connecting to the connecting groove (14) and a blocking state blocking the connecting groove (14), when the blade (2) extends into the accommodating cavity (11), the blade (2) blocks the connecting groove (14), and when the blade (2) is completely retracted into the blade groove (12), the notch (21) is connected to the connecting groove (14).

2. The compressor pump body according to claim 1, characterized in that: The communicating groove (14) and the air inlet (13) are respectively located on two sides of the blade groove (12).

3. The compressor pump body according to claim 1, characterized in that: The communicating groove (14) and the notch (21) are respectively formed on the end surfaces of the cylinder (1) and the blade (2) on the same side.

4. The compressor pump body according to claim 3, characterized in that: The air inlet (13) is opened on the other end surface of the cylinder (1).

5. The compressor pump body according to claim 1, characterized in that: A first through hole (15) is radially opened on the outer wall of the cylinder (1); the first through hole (15) is connected to the blade groove (12); and the central axis of the first through hole (15) overlaps with the central line of the blade groove (12).

6. The compressor pump body according to claim 5, characterized in that: The notch of the connecting groove (14) connecting to the blade groove (12) is a first notch (141); the end of the first through hole (15) closest to the center point of the accommodating chamber (11) is a hole bottom end (151); the distance from the hole bottom end (151) to the center point of the accommodating chamber (11) is smaller than the distance from the first notch (141) to the center point of the accommodating chamber (11); a connecting groove (16) is provided on one side of the blade groove (12) along the axial direction of the cylinder (1); the connecting groove (16) is connected to the hole bottom end (151); when the blade (2) is fully retracted into the blade groove (12), the notch (21) is connected to the connecting groove (16).

7. The compressor pump body according to claim 6, characterized in that: A second through hole (17) is axially provided at one end of the blade slot (12) away from the accommodating chamber (11); the central axis of the second through hole (17) and the central axis of the first through hole (15) are located in the same plane; and the distance from the second through hole (17) to the center point of the accommodating chamber (11) is greater than the distance from the connecting slot (16) to the center point of the accommodating chamber (11).

8. The compressor pump body according to claim 1, characterized in that: The cylinder (1) is provided with a positioning hole (18) along the axial direction.

9. The compressor pump body according to claim 1, characterized in that: Both side walls of the port of the blade slot (12) communicating with the accommodating chamber (11) are provided with chamfers (121).

10. A rolling rotor compressor, characterized in that: The rolling rotor compressor comprises a compressor pump body (100) according to any one of claims 1 to 9.

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