Compressor and refrigeration equipment with same

Abstract

The compressor comprises a motor, a crankshaft, a compression mechanism and a silencer, the motor comprises a stator and a rotor, the stator comprises a stator iron core and a winding, the stator iron core is provided with a plurality of stator grooves which are spaced in the circumferential direction of the stator iron core, the number of the stator grooves is Q, and the winding is arranged in the stator grooves; one end of the crankshaft is connected with the rotor; the compression mechanism is connected with the other end of the crankshaft; the silencer is arranged on the side, facing the motor, of the compression mechanism in a covering mode, the inner circumferential wall of the silencer is provided with a plurality of concave parts which are concave outwards in the radial direction, the concave parts are spaced in the circumferential direction of the silencer, the number of the concave parts is N, and Q / N is larger than or equal to 2 and smaller than or equal to 7.5. According to the compressor, the coupling relation between electromagnetic exciting force and noise caused by high-temperature and high-pressure refrigerant injection can be obviously reduced, and the gas compressing effect and the noise reducing effect of the compressor can be achieved at the same time.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of refrigeration equipment, in particular to a compressor and a refrigeration equipment having the same. Background Art

[0002] In the prior art, permanent magnet motors are mainly used as motors for compressors. As the power density of permanent magnet motors increases, the electromagnetic exciting force increases. This, together with the high-pressure circulating gas inside the compressor, causes the noise of the compressor to deteriorate. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a compressor, which can simultaneously meet the effects of compressing gas and reducing noise.

[0004] The utility model also provides a refrigeration device, which comprises the above-mentioned compressor.

[0005] According to an embodiment of the utility model, the compressor includes a motor, a crankshaft, a compression mechanism and a muffler, the motor includes a stator and a rotor, the stator includes a stator core and a winding, the stator core has a plurality of stator slots spaced apart along the circumferential direction of the stator core, the number of the stator slots is Q, and the winding is arranged in the stator slots; one end of the crankshaft is connected to the rotor; the compression mechanism is connected to the other end of the crankshaft; the muffler cover is arranged on the side of the compression mechanism facing the motor, the inner circumferential wall of the muffler has a recessed portion recessed in a radially outward direction, the recessed portion is a plurality of recessed portions spaced apart along the circumferential direction of the muffler, the number of the recessed portions is N, and satisfies: 2≤Q / N≤7.5.

[0006] According to the compressor of the embodiment of the utility model, by arranging the muffler cover on the side of the compression mechanism facing the motor, the high-temperature and high-pressure refrigerant compressed by the compression mechanism will enter the recessed part of the muffler, and then flow out to the motor and the outlet away from the compression mechanism, thereby effectively weakening the vibration noise generated when the high-temperature and high-pressure refrigerant is injected. The number of stator slots on the stator core and the number of recessed parts of the muffler meet 2≤Q / N≤7.5, which can significantly reduce the noise coupling relationship caused by the electromagnetic excitation force and the high-temperature and high-pressure refrigerant injection, thereby reducing the noise generated by the compressor. And the relationship between the number of stator slots and recessed parts is relatively reasonable, which can simultaneously meet the compressor's effect of compressing gas and reducing noise.

[0007] In some embodiments of the present invention, the rotor includes a rotor core and a rotor magnet, the rotor core is provided with a plurality of magnet slots, the plurality of magnet slots are arranged at intervals along the circumferential direction of the rotor core and each of the magnet slots extends in the axial direction of the rotor core, the rotor magnet is arranged in the magnet slot, the number of poles of the rotor is 2P, and satisfies: GCD(Q, 2P)=5.

[0008] In some embodiments of the present invention, the number of poles 2P of the rotor satisfies: 2P≥10.

[0009] In some embodiments of the present invention, the number Q of the stator slots satisfies: Q≥15.

[0010] In some embodiments of the present invention, the number of the silencer is one; or, the number of the silencer is multiple, and the multiple silencers are stacked.

[0011] In some embodiments of the present invention, the conductor of the winding is an enameled copper wire and / or an enameled aluminum wire; and / or, the conductor of the winding is a round wire.

[0012] In some embodiments of the present invention, the pitch T of the winding satisfies: T≥1.

[0013] In some embodiments of the present invention, in a cross section perpendicular to the axial direction of the rotor core, the magnet slot is linear, and a line connecting a midpoint of the magnet slot in the length direction and the center of the rotor core is perpendicular to the magnet slot.

[0014] In some embodiments of the present invention, in a cross section perpendicular to the axial direction of the rotor core, the magnet slot is linear, and the length direction of the magnet slot extends along the radial direction of the rotor core.

[0015] In some embodiments of the present invention, the magnet slot includes a first slot and a second slot, the first slot and the second slot are angled with each other, and the first slot and the second slot are inclined in a direction away from the axis of the rotor core.

[0016] In some embodiments of the present invention, the first slot and the second slot are spaced apart or connected in a direction close to the axis of the rotor core.

[0017] In some embodiments of the present invention, on a cross section perpendicular to the axial direction of the rotor core, the magnet slot includes a first slot, a second slot and a third slot, a line connecting a midpoint of the second slot in the length direction and the center of the rotor core is perpendicular to the second slot, the first slot and the third slot are located on the side of the second slot that is away from the axis of the rotor core, and in a direction away from the axis of the rotor core, the first slot and the third slot are inclined in a direction away from each other.

[0018] In some embodiments of the present invention, one end of the first slot close to the axis of the rotor core and one end of the third slot close to the axis of the rotor core are respectively located at two ends of the length direction of the second slot.

[0019] In some embodiments of the present invention, one end of the first slot close to the rotor core axis and one end of the third slot close to the rotor core axis are respectively located at two ends of the second slot in the length direction and are connected or spaced apart.

[0020] In some embodiments of the present invention, on a cross section perpendicular to the axial direction of the rotor core, the magnet slot includes a first slot, a second slot, a third slot and a fourth slot, the first slot and the second slot are angled to each other, the first slot and the second slot are inclined in a direction away from the axis of the rotor core toward a direction away from each other, the second slot and the third slot are angled to each other, the second slot and the third slot are inclined in a direction away from each other in a direction close to the axis of the rotor core, the third slot and the fourth slot are angled to each other, the third slot and the fourth slot are inclined in a direction away from each other in a direction away from the axis of the rotor core.

[0021] In some embodiments of the present invention, the first slot and the second slot are spaced apart or connected in a direction close to the axis of the rotor core; the second slot and the third slot are spaced apart or connected in a direction away from the axis of the rotor core; the third slot and the fourth slot are spaced apart or connected in a direction close to the axis of the rotor core.

[0022] In some embodiments of the present invention, the magnet slot penetrates the rotor core along the axial direction of the rotor core.

[0023] The refrigeration equipment according to the embodiment of the utility model includes the above-mentioned compressor.

[0024] According to the refrigeration equipment of the embodiment of the utility model, by arranging the silencer cover on the side of the compression mechanism facing the motor, the high-temperature and high-pressure refrigerant compressed by the compression mechanism will enter the recessed part of the silencer, and then flow out to the motor and the outlet away from the compression mechanism, thereby effectively weakening the vibration noise generated when the high-temperature and high-pressure refrigerant is injected. The number of stator slots on the stator core and the number of recessed parts of the silencer meet 2≤Q / N≤7.5, which can significantly reduce the noise coupling relationship caused by the electromagnetic excitation force and the high-temperature and high-pressure refrigerant injection, thereby reducing the noise generated by the compressor. And the relationship between the number of stator slots and recessed parts is relatively reasonable, which can simultaneously meet the effect of compressing gas and reducing noise of the compressor.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is a cross-sectional view of a compressor according to an embodiment of the utility model;

[0028] Figure 2 is a front view of a motor of a compressor according to Embodiment 1 of the present utility model;

[0029] Figure 3 is a front view of a motor of a compressor according to Embodiment 2 of the present utility model;

[0030] Figure 4 is a front view of a motor of a compressor according to Embodiment 3 of the present utility model;

[0031] Figure 5 is a front view of a muffler of a compressor according to an embodiment of the utility model;

[0032] Figure 6 It is a stereoscopic diagram of a muffler of a compressor according to an embodiment of the utility model.

[0033] Reference numerals:

[0034] 100. Compressor;

[0035] 1. Motor; 11. Stator; 111. Stator core; 1111. Stator slot; 112. Winding; 12. Rotor; 121. Rotor core; 1211. Magnet slot; 122. Rotor magnet;

[0036] 2. Crankshaft;

[0037] 3. Compression mechanism; 31. Eccentric block; 32. Outlet;

[0038] 4. Muffler; 41. Recessed part;

[0039] 5. Liquid storage tank; 51. Air inlet valve; 52. Air outlet valve. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The compressor 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0044] like Figure 1 As shown, the compressor 100 according to the embodiment of the utility model includes a motor 1, a crankshaft 2, a compression mechanism 3 and a muffler 4.

[0045] Specifically, Figure 1 and Figure 2As shown, the motor 1 includes a stator 11 and a rotor 12 . The stator 11 can fix the rotor 12 so that the rotor 12 maintains a stable rotation axis, reducing vibration damage to the motor 1 caused by the rotation of the rotor 12 , thereby extending the service life of the motor 1 .

[0046] like Figure 1 and Figure 2 As shown, the stator 11 includes a stator core 111 and a winding 112. The stator 11 plays an important role in power supply in the motor 1. After current is passed through the winding 112, the winding 112 generates a magnetic field. The magnetic field of the winding 112 interacts with the magnetic field of the rotor 12 to generate a torque, thereby driving the rotor 12 to rotate. The stator 11 can also realize the control function of the motor 1. By changing the magnitude and direction of the current passed through the winding 112 of the stator 11, the parameters such as the rotation speed, direction and torque of the motor 1 can be controlled, so that the motor 1 can be accurately adjusted and controlled as needed, and is widely used in various electrical appliances and mechanical equipment.

[0047] like Figure 1 and Figure 2 As shown, the stator core 111 has a plurality of stator slots 1111 spaced apart in the circumferential direction of the stator core 111, the number of the stator slots 1111 is Q, and the windings 112 are arranged in the stator slots 1111. The windings 112 can be placed in the plurality of stator slots 1111 tightly and orderly, and when the windings 112 are energized, the current flows in the windings 112 in the stator slots 1111, generating a magnetic field. This magnetic field interacts with the magnetic field on the rotor 12, thereby generating a torque, driving the motor to rotate, and helping to achieve effective conversion of electromagnetic energy.

[0048] The motor 1 generates heat during operation. If the layout of the winding 112 is unreasonable, it may cause local overheating, affecting the performance and life of the motor 1. Placing the winding 112 in a plurality of stator slots 1111 spaced apart along the circumferential direction of the stator core 111 can increase the heat dissipation area of ​​the winding 112, improve the heat dissipation efficiency of the winding 112, and ensure that the motor 1 can operate stably even in a high temperature environment.

[0049] In addition, the fixing of the winding 112 in the stator slot 1111 also helps to improve the mechanical stability of the motor 1. The close fit between the stator slot 1111 and the winding 112 can prevent the winding 112 from loosening or shifting during the operation of the motor 1, thereby ensuring the stable operation of the motor.

[0050] One end of the crankshaft 2 is connected to the rotor 12, and the compression mechanism 3 is connected to the other end of the crankshaft 2. When the motor 1 is working and the rotor 12 rotates, the rotor 12 drives the crankshaft 2 to rotate, and transmits the rotation to the compression mechanism 3 through the crankshaft 2.

[0051] For example, Figure 1As shown, the compression mechanism 3 is provided with an eccentric block 31, which is fixed on the crankshaft 2, and the position of the eccentric block 31 is offset from the center of the crankshaft 2. When the crankshaft 2 rotates, the position of the eccentric block 31 will also change. This change in position will produce different degrees of compression on the gas in the compressor 100, and the low-temperature gaseous refrigerant can be compressed into a high-temperature and high-pressure gaseous refrigerant, thereby controlling the exhaust volume and pressure of the compressor 100, providing power for the refrigeration cycle, and realizing the refrigeration cycle of compression → condensation → expansion → evaporation (heat absorption).

[0052] like Figure 1 and Figure 5 As shown, the silencer 4 is covered on the side of the compression mechanism 3 facing the motor 1, and the inner peripheral wall of the silencer 4 has a recessed portion 41 that is recessed in the radial outward direction. The high-temperature and high-pressure refrigerant compressed by the compression mechanism 3 will enter the recessed portion 41, and then flow toward the motor 1, and flow out from the outlet 32 ​​on the side away from the compression mechanism 3, thereby effectively weakening the vibration noise generated when the high-temperature and high-pressure refrigerant is injected. At the same time, the motor 1 generates a corresponding electromagnetic excitation force when working, and the electromagnetic excitation force causes the stator 11 to vibrate. The silencer 4 can eliminate part of the noise generated when the stator 11 vibrates, reducing the noise generated by the compressor 100.

[0053] like Figure 5 and Figure 6 As shown, the recessed portions 41 are multiple and spaced apart along the circumferential direction of the muffler 4, the number of the recessed portions 41 is N, and satisfies: 2≤Q / N≤7.5. It can be understood that the value of Q / N can be 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7 or 7.5. When the value of Q / N is not less than 2, the noise coupling relationship caused by the electromagnetic excitation force and the high-temperature and high-pressure refrigerant injection can be significantly reduced, thereby reducing the noise generated by the compressor 100. The value of Q / N is not greater than 7.5, which can make the quantitative relationship between the stator slots 1111 and the recessed portions 41 more reasonable, and can simultaneously meet the effect of compressing gas and reducing noise of the compressor 100.

[0054] According to the compressor 100 of the embodiment of the utility model, by setting the silencer 4 cover on the side of the compression mechanism 3 facing the motor 1, the high-temperature and high-pressure refrigerant compressed by the compression mechanism 3 will enter the recessed portion 41 of the silencer 4, and then flow out to the motor 1 and the outlet 32 ​​away from the side of the compression mechanism 3, thereby effectively weakening the vibration noise generated when the high-temperature and high-pressure refrigerant is injected. The number of stator slots 1111 on the stator core 111 and the number of recessed portions 41 of the silencer 4 meet 2≤Q / N≤7.5, which can significantly reduce the electromagnetic excitation force and the noise coupling relationship caused by the injection of high-temperature and high-pressure refrigerant, thereby reducing the noise generated by the compressor 100. And the quantitative relationship between the stator slots 1111 and the recessed portion 41 is relatively reasonable, which can simultaneously meet the effect of compressing gas and reducing noise of the compressor 100.

[0055] In this embodiment, if Figure 5 and Figure 6 As shown, the muffler 4 includes a plurality of petal-shaped structures protruding radially outward. When the compressed gas flows through the muffler 4, the petal-shaped structures of the muffler 4 can effectively reduce the gas noise.

[0056] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the rotor 12 includes a rotor core 121 and a rotor magnet 122. The rotor core 121 is usually formed by stacking silicon steel sheets. This structure can enhance the magnetic field of the motor 1 and improve the magnetic field strength, thereby enhancing the output capacity of the motor 1. In addition, the rotor core 121 can also improve the electromagnetic efficiency of the rotor 12, so that the motor 1 can work more efficiently.

[0057] like Figure 1 and Figure 2 As shown, a plurality of magnet slots 1211 are provided on the rotor core 121, and the plurality of magnet slots 1211 are arranged at intervals along the circumferential direction of the rotor core 121 and each magnet slot 1211 extends in the axial direction of the rotor core 121. The rotor magnet 122 is arranged in the magnet slot 1211 and forms a magnetic pole. Under the action of the current, the rotor magnet 122 interacts with the magnetic field in the stator core 111 and the rotor core 121 to generate a rotation torque to drive the motor 1 to work. The number of poles of the rotor 12 is 2P, that is, the number of magnetic poles of the rotor 12 is 2P, and satisfies: GCD (Q, 2P) = 5. It can be understood that the greatest common divisor of the number of stator slots 1111 and the number of poles of the rotor 12 is 5. At this time, the vibration of the stator 11 caused by the electromagnetic excitation force of the motor 1 is significantly reduced, thereby reducing the noise generated by the compressor 100.

[0058] In some embodiments of the present invention, the number of poles 2P of the rotor 12 satisfies: 2P ≥ 10. It is understandable that the number of poles 2P of the rotor 12 can be 10, 20, 30, 40, 50, 60, 70 or 80, that is, the number of magnetic poles of the rotor 12 can be 10, 20, 30, 40, 50 or 60, and there is a certain relationship between the rotation speed of the rotor 12 and the number of poles. The more poles the rotor 12 has, the lower the synchronous speed of the rotor 12. The number of poles 2P of the rotor 12 is not less than 10, which can improve the torque output capacity of the rotor 12, and can satisfy GCD (Q, 2P) = 5, reduce the vibration of the stator 11 caused by the electromagnetic excitation force of the motor 1, and thus reduce the noise generated by the compressor 100.

[0059] In this embodiment, the pole number 2P of the rotor 12 is 10, which can improve the torque output capacity of the rotor 12 and satisfy GCD(Q, 2P)=5, thereby reducing the vibration of the stator 11 caused by the electromagnetic excitation force of the motor 1, thereby reducing the noise generated by the compressor 100.

[0060] In some embodiments of the present invention, the number Q of the stator slots 1111 satisfies: Q ≥ 15. It is understandable that the number Q of the stator slots 1111 can be 15, 20, 25, 30, 35, 40, 45 or 50, etc. At this time, the winding 112 can be tightly and orderly placed in a plurality of stator slots 1111, which can increase the heat dissipation area of ​​the winding 112, improve the heat dissipation efficiency, and ensure that the motor 1 can also operate stably in a high temperature environment. At this time, GCD (Q, 2P) = 5 can be satisfied, reducing the vibration of the stator 11 caused by the electromagnetic excitation force of the motor 1, thereby reducing the noise generated by the compressor 100.

[0061] In this embodiment, the number Q of stator slots 1111 is 15, which can increase the heat dissipation area of ​​the winding 112, improve the heat dissipation efficiency, and ensure that the motor 1 can operate stably even in a high temperature environment. At this time, GCD(Q, 2P)=5 can be satisfied, reducing the vibration of the stator 11 caused by the electromagnetic excitation force of the motor 1, thereby reducing the noise generated by the compressor 100.

[0062] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, there is one muffler 4. The high-temperature and high-pressure refrigerant compressed by the compression mechanism 3 enters the recessed portion 41 of the muffler 4, then flows toward the motor 1, and flows out from the outlet 32 ​​on the side away from the compression mechanism 3, thereby effectively weakening the vibration noise generated when the high-temperature and high-pressure refrigerant is injected.

[0063] In some embodiments of the present invention, there are multiple silencers 4, and multiple silencers 4 are stacked. By stacking multiple silencers 4, a more complex acoustic path and sound absorption structure can be formed, thereby more effectively absorbing and reflecting sound waves, reducing the intensity and propagation distance of noise, thereby further improving the noise reduction effect and meeting more stringent noise control requirements.

[0064] In some embodiments of the present invention, the conductor of the winding 112 is an enameled copper wire and / or an enameled aluminum wire. The enameled copper wire has good electrical conductivity and oxidation resistance; the enameled aluminum wire has a light weight and relatively low cost. The most suitable type of conductor can be selected based on comprehensive considerations such as actual application scenarios, performance requirements, and cost budgets to ensure stable, safe, and reliable performance of the compressor 100.

[0065] In some embodiments of the present invention, the conductor of the winding 112 is a round conductor. The cross-sectional structure of the round conductor is the most stable, and the circumference is the shortest when the cross-sectional area is the same, which is conducive to saving materials. In addition, the round conductor has the characteristics of good conductivity, high strength, and good corrosion resistance. The round conductor as the winding 112 can convert electrical energy into mechanical energy or mechanical energy into electrical energy, so that the working efficiency of the compressor 100 is higher.

[0066] In some embodiments of the present invention, the pitch T of the winding 112 satisfies: T≥1. In this case, the pitch of the winding 112 can improve the efficiency of the motor 1, reduce vibration and noise, etc. The size of the pitch of the winding 112 will affect the distribution and arrangement of the coils in the stator slots 1111, thereby affecting the magnetic circuit distribution and electromagnetic performance of the motor 1. A smaller pitch of the winding 112 can improve the performance and efficiency of the motor 1, reduce the impact of high-order harmonics on the motor 1, improve the performance of the motor 1, and save some wires.

[0067] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, on a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 is linear, and a line connecting the midpoint of the length direction of the magnet slot 1211 and the center of the rotor core 121 is perpendicular to the magnet slot 1211. It can be understood that on a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 is in a "one" shape, the rotor magnet 122 is arranged in a direction parallel to the tangent direction of the rotor core 121, and the distances between the plurality of magnet slots 1211 and the center of the rotor core 121 are equal, so that the magnet slots 1211 can be easily processed.

[0068] In some embodiments of the present invention, on a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 is linear, and the length direction of the magnet slot 1211 extends along the radial direction of the rotor core 121. It can be understood that on a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 is in an "I" shape, and along the circumferential direction of the rotor core 121, the rotor magnets 122 are arranged at more positions, the number of poles is larger, and the density of the magnetic field is larger, thereby increasing the rotational torque of the rotor 12.

[0069] In some embodiments of the present invention, Figure 1 and Figure 3 As shown, on a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 includes a first slot, a second slot and a third slot, the line connecting the midpoint of the length direction of the second slot and the center of the rotor core 121 is perpendicular to the second slot, the first slot and the third slot are located on the side of the second slot away from the axis of the rotor core 121, and in the direction away from the axis of the rotor core 121, the first slot and the third slot are inclined in a direction away from each other. It can be understood that on a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 is in a "U" shape, and three rotor magnets 122 can be placed in a single magnet slot 1211, the density of the magnetic field is relatively large, and the torque of the rotor 12 can be increased.

[0070] Furthermore, if Figure 1 and Figure 3 As shown, one end of the first slot close to the axis of the rotor core 121 and one end of the third slot close to the axis of the rotor core 121 are respectively located at two ends of the length direction of the second slot. When installing the rotor magnet 122, the rotor magnet 122 in the second slot can be installed first, and then the rotor magnets 122 in the first slot and the third slot can be installed together. The installation of the rotor magnet 122 is relatively convenient, and the processing process of the magnet slot 1211 is relatively simple.

[0071] Furthermore, one end of the first slot close to the axis of the rotor core 121 and one end of the third slot close to the axis of the rotor core 121 are respectively located at two ends of the length direction of the second slot and are connected or spaced apart. Figure 1 and Figure 3As shown, one end of the first slot near the axis of the rotor core 121 and one end of the third slot near the axis of the rotor core 121 are respectively located at both ends of the length direction of the second slot and connected, which can form a continuous magnetic field, enhance the magnetic field strength, and improve the output torque and efficiency of the motor 1. Or one end of the first slot near the axis of the rotor core 121 and one end of the third slot near the axis of the rotor core 121 are respectively located at both ends of the length direction of the second slot and spaced apart, which can effectively reduce the magnetic leakage phenomenon and reduce the energy loss of the motor 1 during operation, thereby improving the efficiency and performance of the motor 1. In addition, the magnets placed at intervals can also reduce the manufacturing cost and material consumption of the motor 1.

[0072] The arrangement of the rotor magnets 122 may be selected to be connected or spaced according to the use requirements and cost budget of the compressor 100 .

[0073] In some embodiments of the present invention, on a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 includes a first slot, a second slot, a third slot and a fourth slot, the first slot and the second slot are at an angle to each other, the first slot and the second slot are inclined in a direction away from each other in a direction away from the axis of the rotor core 121, the second slot and the third slot are at an angle to each other, the second slot and the third slot are inclined in a direction away from each other in a direction close to the axis of the rotor core 121, the third slot and the fourth slot are at an angle to each other, the third slot and the fourth slot are inclined in a direction away from each other in a direction away from the axis of the rotor core 121. It can be understood that on a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 is in a "W" shape, four rotor magnets 122 can be placed in a single magnet slot 1211, the density of the magnetic field is large, and the torque of the rotor 12 can be increased.

[0074] Further, the first slot and the second slot are arranged at intervals or connected in the direction close to the axis of the rotor core 121. It can be understood that the first slot and the second slot are arranged in a connected manner in the direction close to the axis of the rotor core 121, which can form a continuous magnetic field, enhance the magnetic field strength, and improve the output torque and efficiency of the motor 1. Or the first slot and the second slot are arranged at intervals in the direction close to the axis of the rotor core 121, which can effectively reduce the magnetic leakage phenomenon and reduce the energy loss of the motor 1 during operation, thereby improving the efficiency and performance of the motor 1. In addition, the magnets placed at intervals can also reduce the manufacturing cost and material consumption of the motor 1.

[0075] The arrangement of the rotor magnets 122 may be selected to be connected or spaced according to the use requirements and cost budget of the compressor 100 .

[0076] Further, the second slot and the third slot are arranged at intervals or connected in the direction close to the axis of the rotor core 121. It can be understood that the second slot and the third slot are arranged in a direction close to the axis of the rotor core 121, which can form a continuous magnetic field, enhance the magnetic field strength, and improve the output torque and efficiency of the motor 1. Or the second slot and the third slot are arranged at intervals in the direction close to the axis of the rotor core 121, which can effectively reduce the magnetic leakage phenomenon and reduce the energy loss of the motor 1 during operation, thereby improving the efficiency and performance of the motor 1. In addition, the magnets placed at intervals can also reduce the manufacturing cost and material consumption of the motor 1.

[0077] The arrangement of the rotor magnets 122 may be selected to be connected or spaced according to the use requirements and cost budget of the compressor 100 .

[0078] Further, the third slot and the fourth slot are arranged at intervals or connected in the direction close to the axis of the rotor core 121. It can be understood that the third slot and the fourth slot are arranged in a direction close to the axis of the rotor core 121, which can form a continuous magnetic field, enhance the magnetic field strength, and improve the output torque and efficiency of the motor 1. Or the third slot and the fourth slot are arranged at intervals in the direction close to the axis of the rotor core 121, which can effectively reduce the magnetic leakage phenomenon and reduce the energy loss of the motor 1 during operation, thereby improving the efficiency and performance of the motor 1. In addition, the magnets placed at intervals can also reduce the manufacturing cost and material consumption of the motor 1.

[0079] The arrangement of the rotor magnets 122 may be selected to be connected or spaced according to the use requirements and cost budget of the compressor 100 .

[0080] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the magnet slot 1211 includes a first slot and a second slot, the first slot and the second slot are at an angle to each other, and the first slot and the second slot are inclined in a direction away from each other in a direction away from the axis of the rotor core 121. It can be understood that in a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 is in a "V" shape, two rotor magnets 122 can be placed in a single magnet slot 1211, the density of the magnetic field is relatively large, and the rotational torque of the rotor 12 can be increased; and the structure of the magnet slot 1211 is relatively simple, which is convenient for processing the magnet slot 1211.

[0081] Furthermore, the first slot and the second slot are spaced or connected in a direction close to the axis of the rotor core 121. It can be understood that Figure 1 and Figure 4As shown, the first slot and the second slot are connected in the direction close to the axis of the rotor core 121, which can form a continuous magnetic field, enhance the magnetic field strength, and improve the output torque and efficiency of the motor 1. Or the first slot and the second slot are arranged at intervals in the direction close to the axis of the rotor core 121, which can effectively reduce the magnetic leakage phenomenon and reduce the energy loss of the motor 1 during operation, thereby improving the efficiency and performance of the motor 1. In addition, the magnets placed at intervals can also reduce the manufacturing cost and material consumption of the motor 1.

[0082] The arrangement of the rotor magnets 122 may be selected to be connected or spaced according to the use requirements and cost budget of the compressor 100 .

[0083] In some embodiments of the present invention, the magnet slot 1211 penetrates the rotor core 121 along the axial direction of the rotor core 121. The magnet slot 1211 can penetrate the rotor core 121 during the processing, and the processing of the magnet slot 1211 is relatively simple; in addition, when the rotor core 121 is formed by stacking silicon steel sheets, each silicon steel sheet is provided with a magnet slot 1211, and the rotor core 121 can be formed by stacking silicon steel sheets of the same specification, and the processing of the rotor core 121 is relatively simple.

[0084] In this embodiment, the compressor 100 also includes a liquid storage tank 5, in which a gas-liquid separator is provided. The refrigerant enters the liquid storage tank 5 through an air inlet valve 51 of the liquid storage tank 5, and is separated into gaseous refrigerant and liquid refrigerant under the action of the gas-liquid separator. The gaseous refrigerant enters the compression mechanism 3 through an air outlet valve 52. The compression mechanism 3 can compress the low-temperature gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, thereby controlling the exhaust volume and pressure of the compressor 100, providing power for the refrigeration cycle, and thus realizing the refrigeration cycle of compression → condensation → expansion → evaporation (heat absorption).

[0085] The following describes a compressor 100 according to a specific embodiment of the present invention with reference to the accompanying drawings. It is worth noting that the following description is only exemplary and intended to be used to explain the present invention, and cannot be understood as limiting the present invention.

[0086] Embodiment 1

[0087] Specifically, Figure 1 and Figure 2 As shown, the compressor 100 includes a motor 1 , a crankshaft 2 , a compression mechanism 3 , a muffler 4 and a liquid storage tank 5 .

[0088] The motor 1 includes a stator 11 and a rotor 12. The stator 11 includes a stator core 111 and a winding 112. The conductor of the winding 112 is an enameled copper wire and the conductor of the winding 112 is a round conductor. The stator core 111 has a plurality of stator slots 1111 spaced apart in the circumferential direction of the stator core 111. The number of the stator slots 1111 is Q. The winding 112 is arranged in the stator slots 1111. One end of the crankshaft 2 is connected to the rotor 12, and the compression mechanism 3 is connected to the other end of the crankshaft 2. The muffler 4 cover is arranged on the side of the compression mechanism 3 facing the motor 1. The inner peripheral wall of the muffler 4 has a concave portion 41 concave toward the radial outward direction. The concave portion 41 is a plurality of concave portions 41 spaced apart in the circumferential direction of the muffler 4. The number of the concave portions 41 is N, and satisfies: 2≤Q / N≤7.5. The rotor 12 includes a rotor core 121 and a rotor magnet 122. The rotor core 121 is provided with a plurality of magnet slots 1211, which penetrate the rotor core 121 along the axial direction of the rotor core 121. The plurality of magnet slots 1211 are arranged at intervals along the circumferential direction of the rotor core 121 and each magnet slot 1211 extends in the axial direction of the rotor core 121. The rotor magnet 122 is arranged in the magnet slot 1211. The number of poles of the rotor 12 is 2P, and satisfies: GCD (Q, 2P) = 5. The number of poles 2P of the rotor 12 is 10, the number Q of the stator slots 1111 is 15, and the pitch T of the winding 112 is 1.

[0089] The number of the muffler 4 is one, and the muffler 4 includes a plurality of petal-shaped structures protruding radially outward. When the compressed gas flows through the muffler 4, the petal-shaped structure of the muffler 4 can effectively reduce the gas noise.

[0090] In a cross section perpendicular to the axial direction of the rotor core 121 , the magnet slot 1211 is linear, and a line connecting a midpoint of the length direction of the magnet slot 1211 and the center of the rotor core 121 is perpendicular to the magnet slot 1211 .

[0091] The compressor 100 also includes a liquid storage tank 5, in which a gas-liquid separator is provided. The refrigerant enters the liquid storage tank 5 through an air inlet valve 51 of the liquid storage tank 5, and is separated into gaseous refrigerant and liquid refrigerant under the action of the gas-liquid separator. The gaseous refrigerant enters the compression mechanism 3 through an air outlet valve 52. The compression mechanism 3 can compress the low-temperature gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, thereby controlling the exhaust volume and pressure of the compressor 100, providing power for the refrigeration cycle, and realizing the refrigeration cycle of compression → condensation → expansion → evaporation (heat absorption).

[0092] Embodiment 2

[0093] like Figure 1 and Figure 3As shown, the structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are marked with the same reference numerals, and the only difference is that in a cross section perpendicular to the axial direction of the rotor core 121, the magnet slot 1211 includes a first slot, a second slot and a third slot, a line connecting the midpoint of the second slot in the length direction and the center of the rotor core 121 is perpendicular to the second slot, the first slot and the third slot are located on the side of the second slot away from the axis of the rotor core 121, and in the direction away from the axis of the rotor core 121, the first slot and the third slot are inclined in a direction away from each other. One end of the first slot close to the axis of the rotor core 121 and one end of the third slot close to the axis of the rotor core 121 are respectively located at two ends of the length direction of the second slot. One end of the first slot close to the axis of the rotor core 121 and one end of the third slot close to the axis of the rotor core 121 are respectively located at two ends of the length direction of the second slot and are connected.

[0094] Embodiment 3

[0095] like Figure 1 and Figure 4 As shown, the structure of this embodiment is substantially the same as that of the first embodiment, wherein the same reference numerals are used for the same components, and the only difference is that the magnet slot 1211 includes a first slot and a second slot, the first slot and the second slot are at an angle to each other, and the first slot and the second slot are inclined in a direction away from the axis of the rotor core 121 and away from each other. The first slot and the second slot are connected in a direction close to the axis of the rotor core 121.

[0096] The refrigeration device according to the embodiment of the present invention includes the compressor 100 mentioned above.

[0097] According to the refrigeration equipment of the embodiment of the utility model, by setting the silencer 4 cover on the side of the compression mechanism 3 facing the motor 1, the high-temperature and high-pressure refrigerant compressed by the compression mechanism 3 will enter the recessed portion 41 of the silencer 4, and then flow out to the motor 1 and the outlet 32 ​​away from the side of the compression mechanism 3, so that the vibration noise generated when the high-temperature and high-pressure refrigerant is injected can be effectively weakened. The number of stator slots 1111 on the stator core 111 and the number of recessed portions 41 of the silencer 4 meet 2≤Q / N≤7.5, which can significantly reduce the electromagnetic excitation force and the noise coupling relationship caused by the injection of high-temperature and high-pressure refrigerant, thereby reducing the noise generated by the compressor 100. And the relationship between the number of stator slots 1111 and the recessed portion 41 is relatively reasonable, which can simultaneously meet the effect of compressing gas and reducing noise of the compressor 100.

[0098] The compressor 100 according to the embodiment of the present invention and other structures and operations of the refrigeration device having the same are well known to those skilled in the art and will not be described in detail here.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0100] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A compressor, characterized in that: include: A motor, the motor comprising a stator and a rotor, the stator comprising a stator core and a winding, the stator core having a plurality of stator slots spaced apart along a circumferential direction of the stator core, the number of the stator slots being Q, and the winding being arranged in the stator slots; a crankshaft, one end of which is connected to the rotor; A compression mechanism connected to the other end of the crankshaft; A muffler, wherein the muffler cover is arranged on the side of the compression mechanism facing the motor, the inner circumferential wall of the muffler has a recessed portion recessed in a radially outward direction, the recessed portions are multiple and spaced apart along the circumferential direction of the muffler, the number of the recessed portions is N, and satisfies: 2≤Q / N≤7.

5.

2. The compressor according to claim 1, characterized in that The rotor includes a rotor core and a rotor magnet. The rotor core is provided with a plurality of magnet slots. The plurality of magnet slots are arranged at intervals along the circumferential direction of the rotor core and each of the magnet slots extends in the axial direction of the rotor core. The rotor magnet is arranged in the magnet slot. The number of poles of the rotor is 2P, and satisfies: GCD(Q, 2P)=5.

3. The compressor according to claim 2, characterized in that The number of poles 2P of the rotor satisfies: 2P≥10.

4. The compressor according to claim 1, characterized in that The number Q of the stator slots satisfies: Q≥15.

5. The compressor according to claim 1, characterized in that The number of the silencer is one; Alternatively, there are multiple silencers, and the multiple silencers are stacked.

6. The compressor according to claim 1, characterized in that The conductors of the windings are enameled copper wires and / or enameled aluminum wires; And / or, the conductor of the winding is a round conductor.

7. The compressor according to claim 1, characterized in that The pitch T of the winding satisfies: T≥1.

8. The compressor according to claim 2, characterized in that In a cross section perpendicular to the axial direction of the rotor core, the magnet slot is linear, and a line connecting a midpoint in the length direction of the magnet slot and a center of the rotor core is perpendicular to the magnet slot.

9. The compressor according to claim 2, characterized in that In a cross section perpendicular to the axial direction of the rotor core, the magnet slot is linear, and the length direction of the magnet slot extends along the radial direction of the rotor core.

10. The compressor according to claim 2, characterized in that The magnet slots include a first slot and a second slot, the first slot and the second slot are angled with each other, and the first slot and the second slot are inclined in a direction away from each other in a direction away from the axis of the rotor core.

11. The compressor according to claim 10, characterized in that The first slot and the second slot are spaced apart or connected in a direction close to the axis of the rotor core.

12. The compressor according to claim 2, characterized in that On a cross section perpendicular to the axial direction of the rotor core, the magnet slot includes a first slot, a second slot and a third slot, a line connecting a midpoint of the second slot in a length direction and a center of the rotor core is perpendicular to the second slot, the first slot and the third slot are located on a side of the second slot that is away from the axis of the rotor core, and in a direction away from the axis of the rotor core, the first slot and the third slot are inclined in a direction away from each other.

13. The compressor according to claim 12, characterized in that One end of the first slot close to the axis of the rotor core and one end of the third slot close to the axis of the rotor core are respectively located at two ends of the length direction of the second slot.

14. The compressor according to claim 13, characterized in that One end of the first slot close to the axis of the rotor core and one end of the third slot close to the axis of the rotor core are respectively located at two ends of the length direction of the second slot, connected or spaced apart.

15. The compressor according to claim 2, characterized in that In a cross section perpendicular to the axial direction of the rotor core, the magnet slot includes a first slot, a second slot, a third slot and a fourth slot, the first slot and the second slot are angled with each other, the first slot and the second slot are inclined in a direction away from each other in a direction away from the axis of the rotor core, the second slot and the third slot are angled with each other, the second slot and the third slot are inclined in a direction away from each other in a direction close to the axis of the rotor core, and the third slot and the fourth slot are angled with each other, the third slot and the fourth slot are inclined in a direction away from each other in a direction away from the axis of the rotor core.

16. The compressor according to claim 15, characterized in that The first slot and the second slot are spaced apart or connected in a direction close to the axis of the rotor core; The second slot and the third slot are spaced apart or connected in a direction away from the axis of the rotor core; The third slot and the fourth slot are spaced apart or connected in a direction close to the axis of the rotor core.

17. The compressor according to claim 2, characterized in that The magnet slot penetrates the rotor core along the axial direction of the rotor core.

18. A refrigeration device, characterized in that: Comprising a compressor according to any one of claims 1-17.

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