Rotary compressor and refrigeration equipment

Abstract

The utility model discloses a rotary compressor and refrigeration equipment. The rotary compressor comprises a shell, a rotary shaft and a rotary shaft, the motor is arranged in the shell and comprises a stator and a rotor, and the rotor is sleeved with the stator; the compression component comprises at least one air cylinder, and each air cylinder is provided with an air suction port and a discharge port which are communicated with the corresponding compression cavity; the silencer is arranged on the compression component, a silencing cavity communicated with the discharge port is defined by the silencer, and the silencing cavity is provided with a discharge port; wherein the total volume of the compression cavity is Vmm < 3 >, the total cross sectional area of the air suction port is S1 mm < 2 >, the total cross sectional area of the discharge port is S2 mm < 2 >, the cross sectional area of the discharge port is S3 mm < 2 >, and the rotary compressor meets the requirement of # imgabs 0 # and # imgabs 1 # according to the rotary compressor disclosed by the embodiment of the utility model, by limiting the numerical range of # imgabs 2 # and # imgabs 3 #, on the basis of ensuring the performance of the rotary compressor, the total volume of the compression cavity is Vmm < 3 >; the working noise of the rotary compressor can be reduced, and the energy efficiency of the rotary compressor can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a rotary compressor and a refrigeration device. Background Art

[0002] In the related art, the balance block of the existing motor generally has a structure design of punching and overlapping, resulting in that the balance block cannot be designed into a streamline shape, increasing the wind resistance of the windward surface of the balance block, increasing the noise generated when the balance block cuts the high-speed air flow, and affecting the energy efficiency of the rotary compressor, and there is room for improvement. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a rotary compressor, the rotary compressor has low working noise and high energy efficiency.

[0004] The utility model also provides a refrigeration device.

[0005] The rotary compressor according to the first aspect embodiment of the utility model includes: a housing; a motor, the motor is arranged in the housing, the motor includes a stator and a rotor, the stator is sleeved outside the rotor, the stator includes a stator core, the stator core has a plurality of stator slots for placing stator windings, the number of the stator slots is Q, and the number of poles of the rotor is P; a compression component, the compression component includes at least one cylinder, and each cylinder is provided with an air inlet and an air outlet communicated with a corresponding compression chamber; a silencer, the silencer is arranged in the compression component, the silencer defines a sound absorption chamber communicated with the air outlet, and the sound absorption chamber has a discharge port; wherein, the total volume of the compression chamber is Vmm 3 , the total cross-sectional area of the air inlets is S1mm 2 , the total cross-sectional area of the air outlets is S2mm 2 , the cross-sectional area of the discharge port is S3mm 2 , the rotary compressor satisfies: 5≤GCD(Q, P)≤6, where GCD(Q, P) is the greatest common divisor of the number of stator slots and the number of poles of the rotor.

[0006] According to the rotary compressor of the embodiment of the utility model, by making S1, S2, S3 and V related, that is and and by defining and The numerical range can improve the sound attenuation effect of the muffler on the air flow and reduce the noise generated by the collision between the balance weight and the air flow on the basis of ensuring the performance of the rotary compressor, thereby reducing the operating noise of the rotary compressor and improving the energy efficiency of the rotary compressor.

[0007] According to some embodiments of the present invention, in the axial direction of the stator core, the minimum distance between the muffler and the motor is L1 mm, and the height dimension of the muffler in the axial direction is H mm, satisfying:

[0008]

[0009] According to some embodiments of the present invention, the discharge port is open in the axial direction of the stator core, and the discharge port is annular.

[0010] According to some embodiments of the present invention, the rotor includes a rotor core, and the rotor core has at least one through hole, and the through hole axially penetrates the rotor core along the axial direction of the rotor core.

[0011] In some examples, there are a plurality of the through holes, and they are arranged at intervals in the circumferential direction of the rotor core, and the total cross-sectional area of the plurality of through holes is S4 mm 2 , and the cross-sectional area of the discharge port is S3 mm 2 , and the rotary compressor satisfies:

[0012] In some examples, in the axial direction of the stator core, at least a part of the discharge port is disposed opposite to at least one of the through holes.

[0013] In some examples, in the axial direction of the rotor core, the minimum distance between the muffler and the rotor core is L2 mm, satisfying: 15 ≤ L2 ≤ 40.

[0014] According to some embodiments of the present invention, the compression component includes a cylinder and a bearing provided on one side of the cylinder, the muffler is sleeved on the bearing, and the discharge port is defined between the inner peripheral wall of the muffler and the outer peripheral wall of the bearing.

[0015] According to some embodiments of the present invention, at least one of the discharge ports is provided on one side of the muffler in the axial direction of the stator core.

[0016] The refrigeration device according to the second aspect embodiment of the present utility model includes a rotary compressor according to the first aspect embodiment of the utility model. By adopting the above-mentioned rotary compressor, the working noise of the rotary compressor can be reduced, and the energy efficiency of the rotary compressor can be improved. Therefore, the working noise of the refrigeration device can be reduced, and the energy efficiency of the refrigeration device can be improved.

[0017] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0018] The above-mentioned and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0019] Figure 1 is a schematic structural diagram of a rotary compressor according to some embodiments of the present utility model;

[0020] Figure 2 is a partial cross-sectional view of a rotary compressor according to some embodiments of the present utility model;

[0021] Figure 3 is a partial cross-sectional view of a compression component from one perspective according to some embodiments of the present utility model;

[0022] Figure 4 is a partial cross-sectional view of a compression component from another perspective according to some embodiments of the present utility model;

[0023] Figure 5 is a partial structural schematic diagram of a motor according to some embodiments of the present utility model.

[0024] Reference Signs:

[0025] Rotary compressor 1000, motor 100, compression component 200, compression chamber 201, suction port 2011, discharge port 2012, cylinder 202,

[0026] Housing 10,

[0027] Stator 20, stator core 21, stator slots 211, stator winding 22,

[0028] Rotor 30, rotor core 31, flow holes 311, permanent magnet 32,

[0029] Crankshaft 40, bearing 41, silencer 42, silencing chamber 421, discharge port 4211,

[0030] Balance weight 50. Detailed Embodiments

[0031] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0032] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for facilitating the description of 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 thus should not be construed as limiting 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, the meaning of "a plurality" is two or more.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] The following refers to Figures 1 - 5 describe a rotary compressor 1000 according to an embodiment of the present utility model.

[0035] As Figures 1 - 5 shown, a rotary compressor 1000 according to an embodiment of the present utility model includes: a housing 10, a motor 100, a compression component 200, and a muffler 42.

[0036] The motor 100 can be arranged within the housing 10. The motor 100 includes a stator 20, a rotor 30, and a crankshaft 40. The stator 20 can be sleeved on the outer periphery of the rotor 30. The crankshaft 40 can be connected to the rotor 30. The rotor 30 can include a rotor core 31 and permanent magnets 32. The permanent magnets 32 can be arranged within the rotor core 31 to generate a permanent magnetic field in the rotor 30. The stator 20 includes a stator core 21 which has a plurality of stator slots 211 for placing stator windings 22. After the stator windings 22 are powered on, the stator windings 22 can generate a rotating magnetic field in the stator 20. The rotating magnetic field of the stator 20 can drive the permanent magnetic field of the rotor 30 to rotate, thereby driving the rotor 30 to rotate relative to the stator 20 to drive the crankshaft 40 to rotate, ensuring the normal operation of the motor 100.

[0037] The compression component 200 can be arranged within the housing 10. The compression component 200 can include at least one cylinder 202. Each cylinder 202 is provided with an air inlet 2011 and an air outlet 2012 that communicate with the corresponding compression chamber 201, that is, the cylinder 202 defines a compression chamber 201. The compression component 200 can include at least one compression chamber 201. Each compression chamber 201 has an air inlet 2011 and an air outlet 2012. A piston can be installed within each compression chamber 201. The piston can be connected to the crankshaft 40. The rotation of the crankshaft 40 can drive the piston to move within the compression chamber 201, driving gas to enter the compression chamber 201 through the air inlet 2011 and driving the gas within the compression chamber 201 to be pumped out through the air outlet 2012, which is beneficial for realizing the compression of gas and the pumping out of gas, ensuring the normal operation of the rotary compressor 1000.

[0038] It can be understood that the compression component 200 can include one compression chamber 201, that is, the rotary compressor 1000 is a single-cylinder compressor, which is beneficial for reducing the cost of the rotary compressor 1000 on the basis of ensuring the performance of the rotary compressor 1000; or, the compression component 200 can include multiple compression chambers 201. For example, the compression component 200 can include two compression chambers 201, that is, the rotary compressor 1000 is a double-cylinder compressor, which is beneficial for improving the performance of the rotary compressor 1000.

[0039] The silencer 42 can be arranged on the compression component 200. The silencer 42 can be defined with a silencing cavity 421. The silencing cavity 421 can be communicated with the discharge port 2012, enabling the gas pumped out by the compression component 200 to enter the silencer 42, which is beneficial to achieving the silencing of the air flow, reducing the working noise of the rotary compressor 1000, and improving the user experience. The silencing cavity 421 can have a discharge port 4211, enabling the air flow in the silencer 42 to flow out through the discharge port 4211. On the basis of ensuring the silencing effect on the air flow, it can reduce the interference to the air flow, thereby ensuring the normal flow of the gas and the normal operation of the rotary compressor 1000.

[0040] Among them, the number of stator slots 211 is Q, the number of poles of the rotor 30 is P, GCD(Q, P) is the greatest common divisor of the number of stator slots 211 and the number of poles of the rotor 30, and GCD(Q, P) can represent the order of the minimum electromagnetic force generated by the motor 100. The vibration of the motor 100 is approximately inversely proportional to the fourth power of the order of the electromagnetic force of the motor 100. If the order of the electromagnetic force of the motor 100 is too small, the vibration of the motor 100 is too large, affecting the working stability of the motor 100 and prone to generating relatively large noise. If the order of the electromagnetic force of the motor 100 is too large, it is prone to increasing the complexity of the motor 100's electronic control, affecting the working reliability of the motor 100.

[0041] Therefore, Q, P, and GCD(Q, P) can be determined according to the actual design requirements. For example, GCD(Q, P) can be limited within the range of 5 - 6, that is, GCD(Q, P) can be 5 or 6. When GCD(Q, P) = 5, the number of poles of the rotor 30 can be 10, and the number of stator slots 211 can be 15. When GCD(Q, P) = 6, the number of poles of the rotor 30 can be 12, and the number of stator slots 211 can be 18. This is beneficial to reducing the vibration degree of the motor 100, reducing the working noise of the motor 100, improving the working stability of the motor 100, and at the same time beneficial to simplifying the electronic control of the motor 100 and improving the working reliability of the motor 100.

[0042] It can be understood that the number of phases of the stator winding 22 is m, and the number of slots occupied by each phase winding under each magnetic pole is By limiting the motor 100 can use fractional slots, which is beneficial to saving energy, improving work efficiency, reducing noise, and the fractional slots can adopt concentrated windings, which is beneficial to improving the regularity of automatic winding, increasing the utilization rate of the space in the stator slots 211, enabling the variable loss and constant loss of the motor 100 to be at a relatively average level, thereby improving the work efficiency of the motor 100 and increasing the power density of the motor 100.

[0043] The total volume of the compression chamber 201 is V mm 3 , that is, the displacement of the rotary compressor 1000 is V mm 3 , the total cross-sectional area of the suction port 2011 is S1 mm 2 , the total cross-sectional area of the discharge port 2012 is S2 mm 2 , the cross-sectional area of the discharge outlet 4211 is S3 mm 2 ; if V is too large, the total volume of the compression chamber 201 is too large, which will cause the air flow velocity in the compression chamber 201 to become low, affecting the air intake capacity and air outlet capacity of the compression chamber 201, thereby affecting the performance of the rotary compressor 1000. If V is too small, the total volume of the compression chamber 201 is too small, which will cause the air flow velocity in the compression chamber 201 to become high, and it is easy to generate relatively large noise.

[0044] If S1 is too large or S2 is too small, the difference between S1 and S2 will be too large, which is likely to increase the air flow velocity at the discharge port 2012, affecting the silencing effect of the silencer 42 on the air flow. If S1 is too small or S2 is too large, the difference between S1 and S2 will be too small, which will reduce the air flow velocity at the discharge port 2012, affecting the performance of the rotary compressor 1000.

[0045] In addition, if S2 is too large or S3 is too small, the air flow velocity at the discharge outlet 4211 will increase, which is likely to cause interference between the balance weight 50 of the motor 100 and the air flow to generate relatively large noise, and it affects the work efficiency of the rotary compressor 1000 and the energy efficiency of the rotary compressor 1000. If S2 is too small or S3 is too large, the air flow velocity at the discharge port 2012 is likely to increase, affecting the silencing effect of the silencer 42 on the air flow, and at the same time, the air flow velocity at the discharge outlet 4211 will be reduced, affecting the performance of the rotary compressor 1000.

[0046] Therefore, S1, S2, S3, V and GCD(Q, P) can be associated together, that is and and can be limited between 0.5 mm - 1.1 mm, can be any one of the point values of 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm or the range value between any two of them, and can be limited between 0.55 - 0.91, It can be any one of the point values 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, 0.91 or the range value between any two of them. On the basis of ensuring the performance of the rotary compressor 1000, the silencing effect of the silencer 42 on the air flow can be improved, and the noise generated by the collision between the balance weight 50 and the air flow can be reduced, so that the operating noise of the rotary compressor 1000 can be reduced, and the energy efficiency of the rotary compressor 1000 can be improved.

[0047] For the rotary compressor 1000 according to the embodiment of the present invention, by associating S1, S2, S3 and V, that is With And by defining With The numerical range of, on the basis of ensuring the performance of the rotary compressor 1000, the silencing effect of the silencer 42 on the air flow can be improved, and the noise generated by the collision between the balance weight 50 and the air flow can be reduced, so that the operating noise of the rotary compressor 1000 can be reduced, and the energy efficiency of the rotary compressor 1000 can be improved.

[0048] Such as Figure 2 As shown, according to some embodiments of the present invention, in the axial direction of the stator core 21 (such as Figure 2 The up and down direction shown), the minimum distance between the silencer 42 and the motor 100 is L1 mm, that is, the minimum distance between the balance weight 50 of the motor 100 and the silencer 42 is L1 mm, and the height dimension of the silencer 42 is H mm.

[0049] If L1 is too large, the flow path of the air flow becomes longer, and it is easy to lose the kinetic energy of the air flow, reducing the performance of the rotary compressor 1000. If L1 is too small, the balance weight 50 of the motor 100 is likely to interfere with the air flow, generating a large amount of noise, and reducing the work efficiency of the rotary compressor 1000 and the energy efficiency of the rotary compressor 1000; if H is too large, the volume of the silencing cavity 421 becomes larger, and it is easy to reduce the air pressure in the silencing cavity 421, reducing the flow velocity of the air flow in the silencing cavity 421, reducing the performance of the rotary compressor 1000. If H is too small, the volume of the silencing cavity 421 becomes smaller, and it is easy to increase the flow velocity of the air flow in the silencing cavity 421, reducing the silencing effect of the silencer 42 on the air flow.

[0050] Therefore, H and L1 can be associated together, that is And can be Limited between 0.8 - 3, It can be any one of the point values of 0.8, 1, 1.2, 1.4, 1.6, 1.8, 2, 2.2, 2.4, 2.6, 2.8, 3 or the range value between any two of them, which can reduce the working noise of the rotary compressor 1000, improve the energy efficiency of the rotary compressor 1000, and ensure the performance of the rotary compressor 1000 at the same time.

[0051] According to some embodiments of the present invention, the discharge port 4211 can be an annular discharge port, which is beneficial to increasing the cross-sectional area of the discharge port 4211, and the discharge port 4211 is open in the axial direction of the stator core 21 (such as Figure 2 the up and down direction shown), so that it is beneficial for the gas to directly enter the flow hole 311 after passing through the discharge port 4211, and it is beneficial to appropriately reduce the flow velocity of the air flow at the discharge port 4211, thereby reducing the probability of interference between the balance weight 50 of the motor 100 and the air flow, reducing the working noise of the rotary compressor 1000, and improving the work efficiency of the rotary compressor 1000 and the energy efficiency of the rotary compressor 1000 at the same time.

[0052] It can be understood that the annular discharge port can be a concentric circular discharge port, that is, the centers of the two edges of the annular discharge port in the radial direction of the stator core 21 (such as Figure 2 the inner and outer direction shown) are the same. For example, the annular discharge port can be a circular discharge port, the annular discharge port can be an elliptical annular discharge port; or, the annular discharge port can be a non-standard annular discharge port; or, the annular discharge port can be a non-concentric circular discharge port, that is, the centers of the two edges of the annular discharge port in the radial direction of the stator core 21 (such as Figure 2 the inner and outer direction shown) are different.

[0053] As Figure 5 shown, according to some embodiments of the present invention, the rotor 30 includes a rotor core 31, and the rotor core 31 has at least one flow hole 311, and the flow hole 311 can penetrate the rotor core 31 along the axial direction of the rotor core 31 (such as Figure 2 the up and down direction shown), which is convenient for the gas to be pumped out through the flow hole 311, can ensure the normal operation of the rotary compressor 1000, and can prevent the gas from being pumped out through the oil return channel (for example, the channel between the stator core 21 and the housing 10) due to the too small gas outlet channel (flow hole 311), thereby ensuring the oil return ability of the rotary compressor 1000 and improving the reliability of the rotary compressor 1000.

[0054] As Figure 2 and Figure 5As shown, in some examples, the number of the circulation holes 311 can be one, and based on ensuring the normal operation of the rotary compressor 1000, the cost can be reduced; or, the number of the circulation holes 311 can be multiple, and the multiple circulation holes 311 can be arranged at intervals along the circumferential direction of the rotor core 31, which can increase the flow rate of the air flow at the circulation holes 311 and ensure the performance of the rotary compressor 1000. The total cross-sectional area of the multiple circulation holes 311 is S4 mm 2 , and the cross-sectional area of the discharge port 4211 is S3 mm 2 .

[0055] If S4 is too large, the rigidity of the rotor core 31 becomes small, and it is difficult to ensure the safe operation of the motor 100. If S4 is too small, the gas is easily pumped out through the oil return passage (for example, the passage between the stator core 21 and the housing 10), reducing the reliability of the rotary compressor 1000; if S3 is too large, the flow velocity of the air flow at the discharge port 4211 will be reduced, reducing the performance of the rotary compressor 1000. If S3 is too small, the flow velocity of the air flow at the discharge port 4211 will be increased, and the balance weight 50 of the motor 100 is likely to interfere with the air flow, generating a large noise, and reducing the work efficiency of the rotary compressor 1000 and the energy efficiency of the rotary compressor 1000.

[0056] Therefore, S3 and S4 can be associated, that is and can be limited between 2.1 and 5.5, which can be any one of the point values 2.1, 2.5, 2.9, 3.3, 3.7, 4.1, 4.5, 4.9, 5.5 or the range value between any two of them. Based on ensuring the reliability of the rotary compressor 1000, the performance of the rotary compressor 1000 can be ensured, and the working noise of the rotary compressor 1000 can be reduced, and the energy efficiency of the rotary compressor 1000 can be improved.

[0057] Such as Figure 2 shown, in some examples, in the axial direction of the stator core 21 (such as Figure 2 the up and down direction shown), the discharge port 4211 is disposed opposite to at least a part of at least one circulation hole 311, so that the gas can directly enter the circulation hole 311 after passing through the discharge port 4211, which can reduce the probability of interference between the balance weight 50 of the motor 100 and the air flow, and is beneficial to reducing the working noise of the rotary compressor 1000.

[0058] Among them, the discharge port 4211 can be an annular discharge port, and the annular discharge port can be disposed opposite to at least a part of the plurality of flow holes 311; alternatively, there can be a plurality of discharge ports 4211, and the plurality of discharge ports 4211 can correspond to the plurality of flow holes 311 one by one, that is, each discharge port 4211 is disposed opposite to one flow hole 311; or, each discharge port 4211 can be disposed opposite to a part of its corresponding flow hole 311.

[0059] As Figure 2 shown, in some examples, in the axial direction of the rotor core 31 (such as Figure 2 the up and down direction shown), the minimum distance between the muffler 42 and the rotor core 31 is L2 mm. If L2 is too large, the flow path of the air flow becomes longer, which easily consumes the kinetic energy of the air flow and reduces the performance of the rotary compressor 1000. If L2 is too small, the balance weight 50 of the motor 100 is likely to interfere with the air flow, generating a large amount of noise, and reducing the work efficiency of the rotary compressor 1000 and the energy efficiency of the rotary compressor 1000. Therefore, L2 can be limited between 15 and 40. L2 can be any one of 15, 20, 25, 30, 35, 40 or the range value between any two of them, which can reduce the working noise of the rotary compressor 1000, improve the energy efficiency of the rotary compressor 1000, and ensure the performance of the rotary compressor 1000 at the same time.

[0060] As Figure 2 shown, according to some embodiments of the present invention, the compression component 200 can include a cylinder 202 and a bearing 41. The bearing 41 can be disposed on one side of the cylinder 202 (such as Figure 2 the upper side shown), and the muffler 42 can be sleeved on the outer periphery of the bearing 41. On the basis of realizing the fixation of the muffler 42, the normal rotation of the crankshaft 40 can be ensured, so that the normal operation of the rotary compressor 1000 can be ensured.

[0061] Among them, the discharge port 4211 is defined between the inner peripheral wall of the muffler 42 and the outer peripheral wall of the bearing 41, which can reduce the distance between the discharge port 4211 and the flow hole 311, enable the gas to directly enter the flow hole 311 after passing through the discharge port 4211, shorten the flow path of the air flow, and reduce the loss of the kinetic energy of the air flow, which is beneficial to ensuring the performance of the rotary compressor 1000.

[0062] As Figure 2 shown, according to some embodiments of the present invention, at least one discharge port 4211 can be disposed on one side of the muffler 42 in the axial direction of the stator core 21 (such as Figure 2 the up and down direction shown) (such as Figure 2On the upper side as shown, the distance between the discharge port 4211 and the flow hole 311 can be reduced, enabling the gas to directly enter the flow hole 311 after passing through the discharge port 4211, shortening the flow path of the air flow, reducing the kinetic energy loss of the air flow, and being beneficial to ensuring the performance of the rotary compressor 1000.

[0063] In addition, in the radial direction parallel to the stator core 21 (such as Figure 2 the inner and outer directions as shown), the number of discharge ports 4211 can be one, and the discharge port 4211 can be provided on the side wall of the muffler 42; alternatively, the number of discharge ports 4211 is multiple, and at least one discharge port 4211 can be provided on the side wall of the muffler 42, which is beneficial to realizing the diversion of the air flow, changing the flow direction of at least a part of the air flow, avoiding the balance weight 50, and thus being beneficial to reducing the probability of interference between the balance weight 50 of the motor 100 and the air flow and reducing the operating noise of the rotary compressor 1000.

[0064] According to the refrigeration device of the embodiment of the present invention, including the rotary compressor 1000, by adopting the above-mentioned rotary compressor 1000, the operating noise of the rotary compressor 1000 can be reduced, and the energy efficiency of the rotary compressor 1000 can be improved, so that the operating noise of the refrigeration device can be reduced, and the energy efficiency of the refrigeration device can be improved.

[0065] Other configurations and operations of the rotary compressor 1000 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here. In the description of the present invention, the "first feature" and "second feature" may include one or more of such features. Among them, the up-down direction, left-right direction, and front-back direction are based on the up-down direction, left-right direction, and front-back direction shown in the figure.

[0066] In the description of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "above", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature.

[0067] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0068] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A rotary compressor, characterized in that, Comprising: A housing; A motor, the motor being disposed within the housing, the motor including a stator and a rotor, the stator being sleeved outside the rotor, the stator including a stator core, the stator core having a plurality of stator slots for placing stator windings, the number of the stator slots being Q, and the number of poles of the rotor being P; A compression component, the compression component including at least one cylinder, each cylinder being provided with an air inlet and an air outlet communicating with a corresponding compression chamber; A muffler, the muffler being disposed on the compression component, the muffler defining a muffling chamber communicating with the air outlet, the muffling chamber having a discharge port; Among them, the total volume of the compression chamber is Vmm 3 , the total cross-sectional area of the suction port is S1mm 2 , the total cross-sectional area of the discharge port is S2mm 2 , the cross-sectional area of the exhaust port is S3mm 2 , the rotary compressor satisfies: 5 ≤ GCD(Q, P) ≤ 6, where GCD(Q, P) is the greatest common divisor of the number of stator slots and the number of poles of the rotor.

2. The rotary compressor according to claim 1, wherein, In the axial direction of the stator core, the minimum distance between the muffler and the motor is L1 mm, and the height dimension of the muffler in the axial direction is H mm, satisfying:

3. The rotary compressor according to claim 1, characterized in that, The discharge port is open in the axial direction of the stator core, and the discharge port is annular.

4. The rotary compressor according to claim 1, characterized in that, The rotor includes a rotor core, the rotor core having at least one through hole, the through hole axially penetrating the rotor core along the axial direction of the rotor core.

5. The rotary compressor according to claim 4, characterized in that, The flow holes are multiple and arranged at intervals along the circumferential direction of the rotor core, and the total cross-sectional area of the multiple flow holes is S4 mm 2 , the cross-sectional area of the discharge port is S3 mm 2 , the rotary compressor satisfies:

6. The rotary compressor according to claim 4, characterized in that, In the axial direction of the stator core, the discharge port is disposed opposite to at least a part of at least one of the through holes.

7. The rotary compressor according to claim 4, wherein, In the axial direction of the rotor core, the minimum distance between the muffler and the rotor core is L2 mm, satisfying: 15 ≤ L2 ≤ 40.

8. The rotary compressor according to claim 1, characterized in that, The compression component includes a cylinder and a bearing disposed on one side of the cylinder, the muffler being sleeved outside the bearing, and the discharge port being defined between the inner peripheral wall of the muffler and the outer peripheral wall of the bearing.

9. The rotary compressor according to claim 1, wherein, At least one of the discharge ports is disposed on one side of the muffler in the axial direction of the stator core.

10. A refrigeration device, characterized in that, Including a rotary compressor according to any one of claims 1-9.

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