Compression assembly, compressor and heat pump system

Abstract

The invention discloses a compression assembly, a compressor and a heat pump system.The compression assembly comprises a cylinder body, a first connecting piece, a second connecting piece and a third connecting piece, a cavity is formed in the cylinder body, the inner wall face of the cavity is provided with 2n sub-inner wall faces which are connected with one another in the circumferential direction, and a first edge is formed between every two adjacent sub-inner wall faces; the rotor is arranged in the cavity, the outer wall surface of the rotor is provided with 2n + 1 sub outer wall surfaces which are mutually connected in the circumferential direction, a second edge is formed between every two adjacent sub outer wall surfaces, and n is an integer larger than or equal to 2; each first edge abuts against the outer wall face of the rotor, each second edge abuts against the inner wall face of the cavity, so that 2n working cavities which are distributed in the circumferential direction and are independent of one another are defined between the cylinder body and the rotor, and each working cavity is provided with an air suction port and an air exhaust port; in the rotating process of the rotor, each working cavity can be divided into an air suction cavity and a compression cavity which are independent of each other, the air suction port communicates with the air suction cavity, the exhaust port communicates with the compression cavity, and the compressor can meet the requirements of multiple cold sources or multiple heat sources at the same time.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a compression assembly, compressor, and heat pump system. Background Technology

[0002] Existing single-suction, single-row rotary compressors can only form one intake chamber and one compression chamber at any given time, thus providing only one heat or cold source. Alternatively, the compressor can be designed with two independent cylinders, the upper cylinder connected to the first intake and first exhaust ports, and the lower cylinder connected to the second intake and second exhaust ports, to achieve dual intake and dual exhaust. However, this still cannot simultaneously meet the needs of more cold or more heat sources. Summary of the Invention

[0003] The main objective of this invention is to provide a compression assembly that enables the compressor to simultaneously meet the needs of multiple cold or heat sources.

[0004] To achieve the above objectives, the present invention provides a compression component comprising:

[0005] The cylinder body has a cavity inside, and the inner wall of the cavity has 2n sub-inner wall surfaces that are interconnected in the circumferential direction, with a first edge formed between two adjacent sub-inner wall surfaces.

[0006] A rotor is disposed in the cavity. The outer wall of the rotor has 2n+1 circumferentially interconnected sub-outer wall surfaces, and a second edge is formed between two adjacent sub-outer wall surfaces, where n is an integer ≥2.

[0007] Each of the first edges abuts against the outer wall of the rotor, and each of the second edges abuts against the inner wall of the cavity, thereby defining 2n circumferentially arranged and independent working chambers between the cylinder and the rotor. Each working chamber has an intake port and an exhaust port. During the rotation of the rotor, each working chamber can be divided into an independent intake chamber and a compression chamber. The intake port communicates with the intake chamber, and the exhaust port communicates with the compression chamber.

[0008] Optionally, the inner wall profile of the cavity has an external cycloid profile that is recessed toward the outer periphery of the cylinder, and the outer wall profile of the rotor has an internal cycloid profile that is recessed toward the center of the rotor.

[0009] Optionally, the equation of the epicycloid profile in the two-dimensional plane is: The equation of the incycloid profile in the two-dimensional plane is: Where a and b are constants, a / b = 2n, and c and d are constants, c / d = 2n+1.

[0010] Optionally, the exhaust port includes a first exhaust port disposed on the inner peripheral wall of the cylinder body, the first exhaust port penetrates the outer peripheral wall of the cylinder body, the first exhaust port is connected to a first exhaust pipe, and each of the compression chambers is connected to the first exhaust pipe via the first exhaust port.

[0011] Optionally, the cylinder body has a first cover and a second cover at its two axial ends respectively; the compression assembly also includes a crankshaft passing through the first cover, the crankshaft having an eccentric portion, the eccentric portion being inserted into the slot of the rotor to drive the rotor to rotate eccentrically within the cavity.

[0012] Optionally, the cylinder body has a plurality of exhaust oblique cuts on the side facing the first cover, and the exhaust port also includes a second exhaust port provided on the first cover. The second exhaust port is provided in a one-to-one correspondence with the exhaust oblique cuts, and each of the compression chambers is connected to the second exhaust port via the exhaust oblique cuts.

[0013] Optionally, the cylinder body has a plurality of suction bevels on the side facing the second cover, the suction port is located on the second cover, the suction port and the suction bevels are arranged in a one-to-one correspondence, and each suction chamber is connected to the suction port through the suction bevel.

[0014] Optionally, it also includes an air intake cover, which is disposed on the side of the second cover away from the cylinder body. The air intake cover has multiple mutually isolated air intake chambers, each of which is connected to an air intake pipe. The air intake chamber is connected to the air intake port one-to-one.

[0015] Optionally, the second cover is fixedly provided with a fixed gear, and the rotor has an internal gear groove on the side facing the second cover, the internal gear groove meshing with the fixed gear.

[0016] Optionally, the crankshaft has a rotational angular velocity of ω1, and the rotor has a rotational angular velocity of ω2, wherein the ratio of ω1 to ω2 is 2n+1.

[0017] Optionally, it also includes valve plates, with the valve plates respectively provided on the intake port and the exhaust port.

[0018] The present invention also proposes a compressor, including a housing and a compression assembly disposed within the housing.

[0019] The present invention also proposes a heat pump system, including a compressor.

[0020] The technical solution of this invention involves making the cylinder cavity have 2n sub-inner wall surfaces, with a first edge at the connection between two adjacent sub-inner wall surfaces, and a rotor with 2n+1 sub-outer wall surfaces inside the cavity, with a second edge at the connection between adjacent sub-outer wall surfaces. During the eccentric rotation of the rotor within the cavity, at any given moment, the 2n first edges on the inner wall of the cavity simultaneously contact the sub-outer wall surfaces of the rotor, forming a working cavity between two adjacent first edges and the sub-outer wall surfaces. At any given moment, the 2n+1 second edges of the rotor simultaneously contact the sub-inner wall surfaces of the cavity. When the second edges of the rotor run within the working cavity, the volumes of the compression chamber and the suction chamber of the working cavity change synchronously. During the rotor rotation, each working cavity can achieve both suction and exhaust functions, thus enabling the compressor cylinder to achieve multiple suction and exhaust functions during operation, simultaneously meeting the needs of multiple cold or heat sources such as refrigeration, defrosting, heating, and domestic hot water. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of an embodiment of the multi-suction, multi-discharge compressor structure of the present invention;

[0023] Figure 2 This is an exploded view of an embodiment of the multi-suction, multi-discharge compressor structure of the present invention;

[0024] Figure 3 This is an exploded view of an embodiment of the compression component of the present invention;

[0025] Figure 4 This is a schematic diagram of the rotor operation in the compression assembly of the present invention;

[0026] Figure 5 This is a schematic diagram of the air intake cover in the compression assembly of the present invention;

[0027] Figure 6 This is a schematic diagram of the cylinder body in the compression assembly of the present invention;

[0028] Figure 7 This is a schematic diagram of the rotor installation in the compression assembly of the present invention.

[0029] Explanation of icon numbers:

[0030]

[0031]

[0032] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0035] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0036] Existing single-suction, single-row rotary compressors can only form one intake chamber and one compression chamber at any given time during operation, thus providing only one heat or cold source. To overcome the limitations of a single heat or cold source, the compressor can be designed with two independent cylinders: the upper cylinder is connected to the first intake and first exhaust ports; the lower cylinder is connected to the second intake and second exhaust ports. At any given moment during operation, there are simultaneously two intake and compression chambers, enabling dual intake and dual exhaust. However, the dual-suction, dual-exhaust design is not fundamentally different from the single-suction, single-exhaust design. Both use circular contours for the cylinder inner walls and rotor outer walls, resulting in low space utilization of the enclosed chambers formed after contact and mating. With a fixed inner diameter of the casing, the working chamber volume is small. Furthermore, existing designs cannot simultaneously meet the needs of more heat or cold sources.

[0037] Therefore, the present invention proposes a compression component.

[0038] Reference Figures 1 to 7 , Figure 1 This is a schematic diagram of an embodiment of the multi-suction, multi-discharge compressor structure of the present invention; Figure 2 This is an exploded view of an embodiment of the multi-suction, multi-discharge compressor structure of the present invention; Figure 3 This is an exploded view of an embodiment of the compression component of the present invention; Figure 4 This is a schematic diagram of the rotor operation in the compression assembly of the present invention; Figure 5 This is a schematic diagram of the air intake cover in the compression assembly of the present invention; Figure 6 This is a schematic diagram of the cylinder body in the compression assembly of the present invention; Figure 7 This is a schematic diagram of the rotor installation in the compression assembly of the present invention.

[0039] In this embodiment of the invention, the compression assembly 10 includes a cylinder 13 and a rotor 14; as Figure 2-7 As shown, the cylinder body 13 has a cavity, and the inner wall of the cavity has 2n interconnected sub-inner wall surfaces along the circumference. Specifically, the 2n interconnected sub-inner wall surfaces enclose and form the inner wall of the cavity. A first edge is provided between two adjacent sub-inner wall surfaces. The rotor 14 is eccentrically mounted in the cavity. The outer wall of the rotor 14 has 2n+1 interconnected sub-outer wall surfaces along the circumference. Specifically, the 2n+1 interconnected sub-outer wall surfaces are arranged around the outer periphery of the rotor 14. A second edge is formed between two adjacent sub-outer wall surfaces. Each of the first edges abuts against the outer wall surface of the rotor 14, and each of the second edges abuts against the inner wall surface of the cavity, thereby defining 2n circumferentially arranged and mutually independent working chambers between the cylinder 13 and the rotor 14. Each working chamber has an intake port 151 and an exhaust port. During the rotation of the rotor 14, each working chamber can be divided into a mutually independent intake chamber and a compression chamber. The intake port 151 is connected to the intake chamber, and the exhaust port is connected to the compression chamber, where n is an integer ≥ 2.

[0040] In this embodiment, n is 2, in conjunction with reference. Figure 4 As shown, the cavity has four interconnected inner wall surfaces, and the rotor 14 has five interconnected outer wall surfaces.

[0041] Specifically, the four interconnected sub-inner wall surfaces connect the outlines of multiple sub-inner wall surfaces of the cavity to form a clover-like shape, making the outlines of the four sub-inner wall surfaces four concave curves, and the connection points of two adjacent sub-inner wall surfaces form the first edge, forming a total of four first edges; the outlines of the five interconnected sub-outer wall surfaces of the rotor 14 are connected in sequence to form a pentagon-like shape, making the outer contour of the rotor 14 include five concave curve-shaped sub-outer wall surfaces, and the connection points of two adjacent sub-outer wall surfaces form the second edge, forming a total of five vertices.

[0042] During the operation of the compression assembly 10, at any given moment, all five second edges of the rotor 14 simultaneously contact the inner wall of the cavity, and the four first edges on the inner wall of the cavity simultaneously contact the outer wall of the rotor 14. The inner wall between two adjacent first edges within the cylinder and the outer wall of the rotor 14 form four independent working volumes, i.e., working chambers. When the two vertices of the rotor 14 and the two vertices of the cylinder are approximately in contact, such as... Figure 4 As shown, the working chamber is the largest at this time; at other times, the working chamber is divided into two closed chambers by two adjacent first edges and one second edge of the rotor 14, namely the compression chamber and the intake chamber.

[0043] Each working chamber has an air intake port 151 and an exhaust port. The air intake port 151 is connected to the air intake chamber, and the exhaust port is connected to the compression chamber.

[0044] The technical solution of this invention is achieved by having the cylinder body 13 have 2n sub-inner wall surfaces, with a first edge at the connection between two adjacent sub-inner wall surfaces, and a rotor 14 with 2n+1 sub-outer wall surfaces inside the cavity, with a second edge at the connection between adjacent sub-outer wall surfaces. During the eccentric rotation of the rotor 14 within the cavity, at any given moment, the 2n first edges on the inner wall of the cavity simultaneously contact the sub-outer wall surfaces of the rotor 14, forming a working cavity between two adjacent first edges and the sub-outer wall surfaces. At any given moment, the 2n+1 second edges of the rotor 14 simultaneously contact the sub-inner wall surfaces of the cavity. When the second edges of the rotor 14 are running within the working cavity, the volumes of the compression chamber and the suction chamber of the working cavity change synchronously. During the rotation of the rotor 14, each working cavity can achieve both suction and exhaust functions, thereby enabling the compressor cylinder to achieve multiple suction and exhaust functions during operation, simultaneously meeting the needs of multiple cold or heat sources such as refrigeration, defrosting, heating, and domestic hot water.

[0045] Furthermore, in conjunction with reference Figure 3 , Figure 4 , Figure 6 As shown, the inner wall profile of the cavity has an external cycloid profile recessed toward the outer periphery of the cylinder 13, and the outer wall profile of the rotor 14 has an internal cycloid profile recessed toward the center of the rotor 14.

[0046] In this embodiment, the inner wall of the cavity adopts an epicycloid profile design, and its profile equation in the two-dimensional (xy) plane is:

[0047]

[0048] Where a and b are constants, a / b = 2n. When a / b takes different values, the shape of the profile is different. In this embodiment, a / b = 4, at which point the profile is shaped like a four-leaf clover.

[0049] The outer wall profile of rotor 14 adopts an introcycloid profile design, and its profile equation in the two-dimensional (xy) plane is:

[0050]

[0051] Where c and d are constants, c / d = 2n + 1. When c / d takes different values, the shape of the profile is different. In this embodiment, c / d = 5, at which point the profile is a quasi-pentagonal shape.

[0052] Specifically, by making the outer wall of rotor 14 concave and the inner wall of cavity concave, the space utilization of the working cavity formed by the outer and inner walls is higher. When a / b=4 and c / d=5, under the same shell diameter, the volume enclosed between the outer wall of cavity and the inner wall of rotor 14 is twice that of a traditional rolling rotor compressor.

[0053] Optionally, the exhaust port includes a first exhaust port 133 disposed on the inner peripheral wall of the cylinder 13, the first exhaust port 133 penetrating the outer peripheral wall of the cylinder 13, the first exhaust port 133 being connected to a first exhaust pipe 19, and each of the compression chambers communicating with the first exhaust pipe 19 via the first exhaust port 133.

[0054] Specifically, the exhaust port includes a first exhaust port 133 disposed on the inner peripheral wall of the cylinder block 13, in conjunction with reference to... Figure 6 , Figure 7 As shown, the first exhaust port 133 is located in the compression chamber and extends radially through the chamber along the rotor 14. The first exhaust port 133 is connected to a first exhaust pipe 19. By connecting the first exhaust pipe 19 to the compression chamber, during the exhaust process of the compression chamber, each working chamber can exhaust through the first exhaust pipe 19, realizing the operation of one intake and one exhaust for each working chamber.

[0055] Optionally, the cylinder body 13 is provided with a first cover 11 and a second cover 15 at its two axial ends respectively; the compression assembly 10 also includes a crankshaft 12 passing through the first cover 11, the crankshaft 12 having an eccentric portion, the eccentric portion being inserted into the slot of the rotor 14, and the rotating portion passing through the first cover 11 to drive the rotor 14 to rotate eccentrically in the cavity.

[0056] Specifically, in conjunction with reference Figure 3As shown, a first cover 11 is located at the upper end of the cylinder body 13, covering the cavity. A crankshaft 12 is rotatably mounted on the first cover 11 along its thickness direction. The crankshaft 12 has an eccentric portion and a rotating portion. The eccentric portion is inserted into a slot of the rotor 14 to connect the rotor 14 and drive the rotor 14 to rotate eccentrically within the cavity. A second cover 15 is located at the lower end of the cylinder body 13, covering the cavity. Specifically, the crankshaft 12 can be connected to a drive component, which drives the crankshaft 12 to rotate. The eccentric portion connecting the crankshaft 12 and the rotor 14 is eccentrically positioned relative to the crankshaft 12, thereby driving the rotor 14 to rotate eccentrically during the rotation of the crankshaft 12.

[0057] Furthermore, the cylinder body 13 has a plurality of exhaust oblique cuts 132 on the side facing the first cover 11. The exhaust oblique cuts 132 are obliquely cut at the opening position above the cavity. The exhaust port is located at the second exhaust port 111 of the first cover 11. The second exhaust port 111 and the exhaust oblique cuts 132 are arranged in a one-to-one correspondence. Each compression chamber is connected to the second exhaust port 111 via the exhaust oblique cuts 132.

[0058] Specifically, in conjunction with reference Figure 3 As shown, the first cover 11 has a second exhaust port 111 extending approximately along its thickness direction, and the second exhaust port 111 is connected to the exhaust oblique cut 132. In this embodiment, the second exhaust port 111 of the first cover 11 is connected to the exhaust oblique cut 132, allowing the high-temperature and high-pressure refrigerant compressed in the compression chamber to be discharged into the second exhaust port 111 of the first cover 11 through the exhaust oblique cut 132, and then discharged through the second exhaust port 111. During the exhaust process of the compression chamber, exhaust can be performed not only through the first exhaust port 133, but also through the second exhaust port 111, so that a single working chamber has two exhaust positions, allowing exhaust from two different positions to meet different cooling or heating needs.

[0059] Since the second exhaust port 111 is located on the first cover 11, it is convenient to install a valve plate on the first cover 11 to control the opening of the exhaust oblique cut 132.

[0060] Furthermore, the cylinder body 13 has a plurality of suction oblique cuts 131 on the side facing the second cover 15. The suction oblique cuts 131 are obliquely cut at the opening position below the cavity. The suction port 151 is provided on the second cover 15. The suction port 151 and the suction oblique cuts 131 are arranged one-to-one. Each suction cavity is connected to the suction port 151 through the suction oblique cuts 131.

[0061] Specifically, in conjunction with reference Figure 3As shown, the second cover 15 has an air intake 151 extending approximately along its thickness direction, and the air intake 151 is connected to the air intake oblique cut 131. In this embodiment, the air intake 151 of the second cover 15 is connected to the air intake oblique cut 131. Since the air intake 151 is located on the second cover 15, it is convenient to install a valve plate on the second cover 15 to control the opening of the air intake oblique cut 131.

[0062] Furthermore, it also includes an air intake shroud 17, which covers the side of the second cover 15 away from the cylinder body 13. The air intake shroud 17 has multiple mutually isolated air intake chambers 171, each of which is connected to an air intake pipe 18. Each air intake chamber 171 is connected to the air intake port 151 in a one-to-one manner. In this embodiment, by adding an air intake shroud 17 to the second cover 15, the air intake shroud 17 has independent air intake chambers 171, which provides a larger air intake space when air is intaked into the air intake chamber, thus meeting the air intake requirements of the compression chamber.

[0063] Optionally, in conjunction with reference Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, the second cover 15 is fixedly provided with a fixed gear 16, and the rotor 14 has an internal gear groove 141 on the side facing the second cover 15. The fixed gear 16 is meshed with the internal gear groove 141, so that the rotor 14 rotates eccentrically around the fixed gear 16. Specifically, when the rotor 14 rotates eccentrically, the internal gear groove 141 of the rotor 14 meshes with the fixed gear 16. When the rotor 14 rotates eccentrically, the engagement of the internal gear groove 141 and the fixed gear 16 limits the eccentric rotation of the rotor 14.

[0064] Furthermore, the rotational angular velocity of the crankshaft 12 is ω1, and the rotational angular velocity of the rotor 14 is ω2, where the ratio of ω1 to ω2 is 2n+1. In this embodiment, n is 2, so the number of outer wall surfaces of the rotor 14 is five, and the number of inner wall surfaces of the cavity is four. When the ratio of ω1 to ω2 is 5, one rotation of the crankshaft 12 or one-fifth rotation of the rotor 14 completes one intake and exhaust cycle for one working chamber.

[0065] It also includes valve plates, which are respectively provided at the intake port 151 and the exhaust port. Specifically, valve plates are provided at the first exhaust port 133, the second exhaust port 111, and the intake port 151. By providing valve plates at each inlet and outlet position connecting the working chamber to the external environment, the inner cavity of the compression assembly 10 is not directly connected to the external environment when it is not working. Instead, the valve plates will only open under the suction and pressure of the cavity during operation, when the intake chamber draws in air and the compression chamber exhausts air, so that the cavity is connected to the external environment for intake or exhaust operations.

[0066] When the compression assembly 10 of this application is working, during the rotation of the rotor 14 one revolution, taking one of the working chambers as an example, when the crankshaft 12 rotates at 0 degrees, the working chamber is at its maximum size. At this time, the compression chamber is connected to the intake oblique cut 131, the volume of the compression chamber reaches its maximum value, the volume of the intake chamber is 0, and the intake chamber begins to intake.

[0067] When the crankshaft 12 rotates at an angle of 112 degrees, the compression chamber and the intake chamber are separated by the second edge of the rotor 14 and the inner wall of the cylinder. The compression chamber begins to compress the gas, the intake chamber volume increases and it is connected to the intake oblique cut 131, and it is in the intake state.

[0068] When the crankshaft 12 rotates to an angle of 196 degrees, the valve plate connected to the exhaust oblique cut 132 opens, the gas in the compression chamber begins to be discharged, and the intake chamber is in the process of expanding and is still in the intake state.

[0069] When the crankshaft 12 rotates at an angle of 252 degrees, the second edge of the rotor 14 is located at the exhaust oblique cut 132, which makes the compression chamber, intake chamber and exhaust oblique cut 132 connected at the same time, and the valve plate closes rapidly under the action of negative pressure.

[0070] When the crankshaft 12 rotates to 360 degrees, all the gas in the compression chamber is discharged, the volume of the intake chamber reaches its maximum value, the intake chamber becomes the compression chamber of the next working cycle and compresses the gas, while a new intake chamber is generated.

[0071] The other three working chambers work in the same way as this working chamber. The four working chambers work independently and are not connected to each other. At any time during operation, there are four chambers in a single cylinder 13 that are simultaneously in the intake state and four chambers that are simultaneously in the compression and exhaust state, realizing the four intake and four exhaust functions, thereby meeting the needs of four cold sources or heat sources at the same time.

[0072] The technical solution of this invention involves having a cylinder body 13 cavity with 2n sub-inner wall surfaces, a first edge at the junction of two adjacent sub-inner wall surfaces, and a rotor 14 with 2n+1 sub-outer wall surfaces disposed within the cavity, with a second edge at the junction of adjacent sub-outer wall surfaces. During the eccentric rotation of the rotor 14 within the cavity, at any given moment, the 2n first edges on the inner wall of the cavity simultaneously contact the sub-outer wall surfaces of the rotor 14, forming a working cavity by enclosing adjacent first edges with the sub-outer wall surfaces. At any given moment, the 2n+1 second edges of the rotor 14 simultaneously contact the sub-outer wall surfaces of the rotor 14. When the crankshaft 12 drives the rotor 14 to rotate, causing the second edge to move against the inner wall of the working chamber, the volume of the compression chamber and the suction chamber of the working chamber changes simultaneously. During the rotation of the rotor 14, in conjunction with the opening and closing of the valve plate, each working chamber can achieve both suction and exhaust. Thus, during the operation of the cylinder, the compressor can achieve multiple suction and multiple exhaust functions, and can achieve two discharge paths for a single working chamber. This can simultaneously meet the needs of multiple cold sources or multiple heat sources, such as refrigeration, defrosting, heating, and domestic hot water.

[0073] Simultaneously, by combining the outer cycloidal contour of the inner wall surface and the inner cycloidal contour of the outer wall surface, the working volume of the cylinder can be effectively increased, solving the defect of small contact volume between the existing cylinder's circular inner wall surface and the rotor's circular outer wall surface. When the number of sub-inner wall surfaces is four and the number of sub-outer wall surfaces is five, the working volume can reach twice that of a traditional rolling rotor compressor under the same shell diameter.

[0074] The present invention also proposes a compressor comprising a housing 20 and a compression assembly 10, in conjunction with reference to [reference needed]. Figure 1 , Figure 2 As shown, the specific structure of the compression assembly 10 is as described in the above embodiments. Since the compressor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The outer casing 20 is provided with an exhaust chamber, which is connected to a second exhaust pipe 21. The compression assembly 10 is disposed inside the outer casing 20, and the second exhaust port 111 of the compression assembly 10 communicates with the exhaust chamber. Specifically, the second exhaust port 111 of the compression assembly 10 communicates with the exhaust chamber. When multiple working chambers of the cylinder exhaust, exhaust gas simultaneously enters the exhaust chamber and is then discharged from the compressor via the second exhaust pipe 21 connected to the exhaust chamber.

[0075] Furthermore, the ends of the first exhaust pipe 19 and the intake pipe 18 away from the cylinder 13 are disposed in the outer casing 20. Specifically, when the ends of the first exhaust pipe 19 and the intake pipe 18 away from the cylinder 13 are disposed outside the outer casing 20, air can be drawn in from outside the outer casing 20, and during exhaust, air can be directly exhausted to the outside of the compressor.

[0076] Optionally, the outer casing 20 is open at both the top and bottom, with an upper end cover 30 installed at the upper end and a lower end cover 31 installed at the lower end.

[0077] This invention also proposes a heat pump system, including the compressor described above. The specific structure of the compressor is as described in the above embodiments. Since this heat pump system adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here. This heat pump system can be used in air conditioners, refrigerators, hot air blowers, water heaters, etc.

[0078] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A compression component, characterized in that, include: The cylinder body has a cavity inside, and the inner wall of the cavity has 2n sub-inner wall surfaces that are interconnected in the circumferential direction, with a first edge formed between two adjacent sub-inner wall surfaces. A rotor is disposed in the cavity. The outer wall of the rotor has 2n+1 circumferentially interconnected sub-outer wall surfaces, and a second edge is formed between two adjacent sub-outer wall surfaces, where n is an integer ≥2. Each of the first edges abuts against the outer wall of the rotor, and each of the second edges abuts against the inner wall of the cavity, thereby defining 2n circumferentially arranged and independent working chambers between the cylinder and the rotor. Each working chamber has an intake port and an exhaust port. During the rotation of the rotor, each working chamber can be divided into an independent intake chamber and a compression chamber. The intake port communicates with the intake chamber, and the exhaust port communicates with the compression chamber.

2. The compression component as described in claim 1, characterized in that, The inner wall profile of the cavity has an external cycloid profile that is recessed toward the outer periphery of the cylinder, and the outer wall profile of the rotor has an internal cycloid profile that is recessed toward the center of the rotor.

3. The compression component as described in claim 2, characterized in that: The equation of the epicycloid profile in the two-dimensional plane is: The equation of the incycloid profile in the two-dimensional plane is: Where a and b are constants, a / b = 2n, and c and d are constants, c / d = 2n+1.

4. The compression component as described in claim 1, characterized in that, The exhaust port includes a first exhaust port located on the inner peripheral wall of the cylinder body, the first exhaust port penetrates the outer peripheral wall of the cylinder body, the first exhaust port is connected to a first exhaust pipe, and each of the compression chambers is connected to the first exhaust pipe via the first exhaust port.

5. The compression component as described in any one of claims 1 to 4, characterized in that, The cylinder body has a first cover and a second cover at its two axial ends respectively; the compression assembly also includes a crankshaft passing through the first cover, the crankshaft having an eccentric portion, the eccentric portion being inserted into the slot of the rotor to drive the rotor to rotate eccentrically within the cavity.

6. The compression assembly as described in claim 5, characterized in that, The cylinder body has multiple exhaust oblique cuts on the side facing the first cover. The exhaust port also includes a second exhaust port on the first cover. The second exhaust port and the exhaust oblique cuts are arranged in a one-to-one correspondence. Each compression chamber is connected to the second exhaust port through the exhaust oblique cut.

7. The compression assembly as claimed in claim 5, characterized in that, The cylinder body has multiple suction bevels on the side facing the second cover. The suction port is located on the second cover. The suction port and the suction bevel are arranged in a one-to-one correspondence. Each suction chamber is connected to the suction port through the suction bevel.

8. The compression assembly as claimed in claim 7, characterized in that, It also includes an air intake cover, which is located on the side of the second cover away from the cylinder body. The air intake cover has multiple mutually isolated air intake chambers, each of which is connected to an air intake pipe. The air intake chamber is connected to the air intake port one-to-one.

9. The compression assembly as claimed in claim 5, characterized in that, The second cover is fixed with a fixed gear, and the rotor has an internal gear groove on the side facing the second cover, which meshes with the fixed gear.

10. The compression assembly as claimed in claim 5, characterized in that, The crankshaft has a rotational angular velocity of ω1, and the rotor has a rotational angular velocity of ω2, wherein the ratio of ω1 to ω2 is 2n+1.

11. The compression assembly as claimed in claim 1, characterized in that, It also includes valve plates, with the valve plates respectively provided at the air intake and the air exhaust ports.

12. A compressor, characterized in that, It includes a housing and a compression assembly as described in any one of claims 1-11, the compression assembly being disposed within the housing.

13. A heat pump system, characterized in that, Includes the compressor as described in claim 12.

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