Support devices, compressors and refrigeration systems

Abstract

The embodiments of the present invention provide a support device, a compressor and a refrigeration system. The support device is used for a compressor, and the support device includes a support member and at least one hollow portion. The support member can be connected to the inner surface of the shell of the compressor to support the shell; at least one hollow portion penetrates the support member along the thickness direction of the support member. By providing a support member connected to the inner surface of the shell of the compressor, support can be provided for the shell from the inside of the shell, thereby forming a constraint relationship with the shell, which can suppress the vibration deformation of the shell, play a role in strengthening the rigidity of the shell, and can effectively improve the structural mode of the upper cavity of the motor, thereby reducing the high-frequency vibration transmission of the motor and reducing the high-frequency noise radiation. By providing a hollow portion that penetrates the support member, it is possible to avoid the support device from blocking the upper cavity of the motor, and ensure that the lubricating oil in the compressor passes smoothly through the hollow portion, thereby reducing the risk of oil accumulation in the upper cavity of the motor, which helps to ensure the reliable operation of the compressor.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of compressors, and in particular, to a supporting device, a compressor and a refrigeration system. Background Art

[0002] Currently, most compressors are designed to be miniaturized, low-noise and lightweight, which makes the compressor noise problem extremely prominent, especially the high-frequency noise, which manifests as a shrill screaming sound when matched with air conditioning. Summary of the invention

[0003] The embodiments of the present invention are intended to solve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of an embodiment of the present invention provides a supporting device.

[0005] A second aspect of an embodiment of the present invention provides a compressor.

[0006] A third aspect of an embodiment of the present invention provides a refrigeration system.

[0007] In view of this, according to a first aspect of an embodiment of the present invention, a support device is provided for a compressor, the support device comprising a support member and at least one hollow portion, the support member being capable of being connected to the inner surface of a shell of the compressor to support the shell; at least one hollow portion penetrating the support member along a thickness direction of the support member.

[0008] The compressor includes a housing, a pump assembly and a motor located in the housing. The motor includes a stator and a rotor. The rotor of the motor is mounted on the crankshaft of the pump assembly. The rotation of the rotor of the motor can drive the crankshaft of the pump assembly to rotate, thereby compressing the gas entering the pump assembly. The housing specifically includes an upper housing, a main housing and a lower housing that are connected to each other. The stator of the motor is connected to the main housing, and the pump assembly is connected to the side of the motor facing the lower housing. The cavity formed by the motor and the pump assembly is called the motor lower cavity, and the cavity formed by the motor and the upper housing is called the motor upper cavity, that is, the motor upper cavity is located on the side of the motor away from the pump assembly. Research has found that the frequency characteristics of the compressor noise are usually above the 4500Hz frequency band, and are all modulated waves formed by the controller carrier frequency and the motor harmonic modulation, and this type of noise is caused by the vibration transmission of the motor upper cavity.

[0009] The support device provided by the embodiment of the present invention can be placed in the upper cavity of the motor of the compressor. By providing a support member connected to the inner surface of the shell of the compressor, support can be provided for the shell from the inside of the shell, specifically, the main shell of the supporting shell corresponds to the part of the upper cavity of the motor, thereby forming a constraint relationship with the shell, which can suppress the vibration deformation of the shell, play a role in strengthening the rigidity of the shell, and effectively improve the structural mode of the upper cavity of the motor, thereby reducing the high-frequency vibration transmission of the motor and reducing the high-frequency noise radiation. The support device can also increase the natural frequency of the upper cavity of the motor, reduce the risk of stator vibration transmission and resonance of the upper cavity of the motor, and significantly reduce the high-frequency noise. Compared with the expansion muffler that can only reduce medium and low frequency noise, it can reduce high-frequency noise in a targeted manner, thereby effectively reducing the modulation noise caused by the motor and the electronic control, and achieving a significant noise reduction effect. At the same time, the support device is arranged in the upper cavity of the motor, and has no connection relationship with the crankshaft of the pump body assembly, and does not support the crankshaft. In addition, by providing a hollow portion that passes through the support member, the support device can be prevented from blocking the upper cavity of the motor, and the lubricating oil in the compressor can be ensured to pass smoothly through the hollow portion, thereby reducing the risk of oil accumulation in the upper cavity of the motor, which helps to ensure the reliable operation of the compressor. Furthermore, the support device provided by the embodiment of the present invention has a simple structure and a simple manufacturing process, which helps to reduce the production cost and can be convenient for mass production. And when the support device is applied to the compressor, it is only necessary to carry out a specific structural design of the support device to adapt to the specific structure of the compressor, without changing the housing, motor and other structures of the existing compressor, thereby reducing the cost of improving the existing product, thereby conveniently and reliably improving the noise reduction effect of the compressor using the support device.

[0010] In addition, the compressor support device provided by the above technical solution of the present invention also has the following additional technical features:

[0011] In a possible design, the support member includes a first support portion, a second support portion and at least two spokes. The second support portion is arranged around the first support portion, and the second support portion can be connected to the inner surface of the shell; at least two spokes are connected between the first support portion and the second support portion, and at least two spokes are spaced around the first support portion, and a hollow portion is formed between two adjacent spokes.

[0012] In this design, the support member specifically includes a first support portion and a second support portion distributed inside and outside, and also includes a spoke connected between the two. The second support portion can be directly connected to the shell to provide direct support. The spoke can transfer the support force borne by the second support portion to the first support portion. Since the number of spokes is at least two and they are distributed around the first support portion, force transmission can be achieved from multiple directions around the first support portion to achieve balanced force on the support member. Specifically, the spoke can be optimized according to the modal frequency of the upper cavity structure of the motor, which helps to ensure that the support member can meet the stiffness requirements of the shell, thereby reducing the high-frequency vibration transmission of the motor and reducing the high-frequency noise radiation, thereby reducing the modulation noise caused by the motor and the electronic control, and achieving a significant noise reduction effect. At the same time, by adjusting the spacing between two adjacent spokes, the size of the hollow portion can be designed as needed to ensure that the lubricating oil in the compressor passes smoothly through the hollow portion, thereby reducing the risk of oil accumulation in the upper cavity of the motor, which helps to ensure the reliable operation of the compressor. In other words, by designing the support in this way, the hollow position and size can be reasonably configured, which can not only reduce the risk of oil accumulation in the upper cavity of the motor, but also meet the support requirements for the shell, ensuring that the shell has sufficient rigidity, thereby reducing the operating noise of the compressor using the support device.

[0013] In a possible design, the first supporting portion is a first supporting ring, and the first supporting ring forms a hollow portion.

[0014] In this design, it is specifically defined that the first support portion is constructed as an annular structure, namely the first support ring. On the one hand, the outer periphery of the first support ring forms a cylindrical surface, which has a high structural strength and can reliably withstand the external force transmitted through the spokes, thereby improving the support capacity of the support member and helping to ensure the rigidity of the shell. On the other hand, the interior of the first support ring is hollowed out to form a hollow portion, thereby increasing the hollow area of ​​the bearing device, facilitating the smooth passage of the lubricating oil in the compressor through the hollow portion, thereby reducing the risk of oil accumulation in the upper cavity of the motor, and helping to ensure the reliable operation of the compressor.

[0015] In a possible design, the second supporting portion is a second supporting ring.

[0016] In this design, it is specifically defined that the second support portion is constructed as an annular structure, that is, a second support ring. Since the shell of the compressor is connected to the stator of the motor, the inner surface of the shell is usually a cylindrical surface. By setting the second support portion as a second support ring, on the one hand, it can ensure that the second support portion is reliably adapted to the shell, which helps to improve the supporting effect of the support member on the shell. On the other hand, the second support ring can be continuously distributed along its circumference, so that each spoke can be connected together, which helps to improve the structural stability of the spoke, and then ensure that the support member is reliably stressed. The combination of the above two aspects can effectively improve the supporting strength of the support member, play a role in strengthening the rigidity of the shell, and can effectively improve the structural mode of the upper cavity of the motor, thereby reducing the high-frequency vibration transmission of the motor and reducing the high-frequency noise radiation, thereby reducing the modulation noise caused by the motor and the electronic control, and achieving a significant noise reduction effect.

[0017] In a possible design, an extended center line of any spoke intersects with a central axis of the first supporting portion.

[0018] In this design, the extension direction of the spokes is specifically defined. The extension direction of the extension centerline of the spokes is recorded as the extension direction of the spokes. By making it intersect with the central axis of the first support part, the force direction of each spoke can be concentrated on the central axis of the first support part, which helps to achieve balanced force on the support member.

[0019] In one possible design, any spoke has a first end and a second end that are opposite to each other; the extended width of any spoke at the first end of the spoke is not equal to the extended width of any spoke at the second end of the spoke, and / or the thickness of any spoke at the first end of the spoke is not equal to the thickness of any spoke at the second end of the spoke.

[0020] In this design, the spoke specifically includes a first end and a second end that are separated from each other, the first end is connected to one of the first support part and the second support part, and the second end is connected to the other of the first support part and the second support part. By making the extension width and / or thickness of the spoke at the first end and the second end unequal, for example, making the extension width of the end connected to the first support part smaller than the extension width of the end connected to the second support part, the extension width and thickness of the spoke can be reasonably adjusted according to the force conditions of the spoke to improve the structural strength of the support. Specifically, the spoke can be optimized and designed according to the modal frequency of the upper cavity structure of the motor, which helps to ensure that the support can meet the stiffness requirements of the shell, thereby reducing the high-frequency vibration transmission of the motor and reducing the high-frequency noise radiation, thereby reducing the modulation noise caused by the motor and the electronic control, and achieving a significant noise reduction effect. In addition, by reasonably setting the extension width of the spoke, the size of the hollow part can also be adjusted to ensure that the lubricating oil in the compressor passes smoothly through the hollow part, thereby reducing the risk of oil accumulation in the upper cavity of the motor, which helps to ensure the reliable operation of the compressor.

[0021] In a possible design, the extension width of any spoke gradually changes from the first end of the spoke to the second end of the spoke; and / or the thickness of any spoke gradually changes from the first end of the spoke to the second end of the spoke.

[0022] In this design, it is further defined that the extension width and / or thickness of the spokes gradually changes along their extension direction (i.e., from the first end of the spokes to the second end of the spokes). This can, on the one hand, make the structure of the spokes transition smoothly, reduce the stress concentration caused by the sudden change of the spoke structure, and help improve the structural strength of the support. On the other hand, the gradually changing spoke structure is simple, the manufacturing process is simple, which helps to reduce the production cost and facilitates mass production.

[0023] In a possible design, the sum of the cross-sectional areas of at least one hollow portion accounts for a proportion greater than or equal to 0.5 of the cross-sectional area of ​​the support device.

[0024] In this design, the hollow size of the support device is limited. The sum of the cross-sectional areas of all the hollow parts is the hollow area of ​​the support device, which can reflect the size of the hollow area. The cross-sectional area of ​​the support device is the sum of the cross-sectional areas of all the hollow parts and the cross-sectional area of ​​the support member, which is approximately equal to the cross-sectional area of ​​the cavity surrounded by the shell connected to the support device, and can reflect the flow area of ​​the lubricating oil when the support device is not provided. When the cross-sectional area of ​​the support device is constant, the larger the hollow area, the more conducive it is for the lubricating oil to pass smoothly. By limiting the ratio of the hollow area to the cross-sectional area of ​​the support device to be greater than or equal to 0.5, it can be ensured that the lubricating oil in the compressor passes smoothly through the hollow part, thereby reducing the risk of oil accumulation in the upper cavity of the motor, which helps to ensure the reliable operation of the compressor. In addition, a hollow area that is too large may cause the support device to be insufficient in strength, and the situation that the stiffness requirements of the upper cavity of the motor of the compressor cannot be met. Therefore, the hollow area should not be too large. The upper limit of the above-mentioned proportion is related to the structure of the compressor to which the support device is applied, and can be designed as needed, for example, 0.75, so it is not specifically limited here.

[0025] According to a second aspect of an embodiment of the present invention, a compressor is provided, comprising a housing and a supporting device as provided by any of the above technical solutions, thereby having all the beneficial technical effects of the supporting device, which will not be repeated here.

[0026] In addition, the compressor provided by the above technical solution of the present invention also has the following additional technical features:

[0027] In a possible design, the compressor further includes a pump body assembly and a motor, the motor and the casing enclose a first cavity and a second cavity that are separated from each other, the pump body assembly is located in the first cavity, and the support device is located in the second cavity.

[0028] In this design, it is specifically defined that the compressor also includes a pump body assembly and a motor. The motor includes a stator and a rotor. The rotor of the motor is sleeved on the crankshaft of the pump body assembly. The rotation of the rotor of the motor can drive the crankshaft of the pump body assembly to rotate, thereby compressing the gas entering the pump body assembly. The housing specifically includes an upper housing, a main housing, and a lower housing that are connected to each other. The stator of the motor is connected to the main housing, and the pump body assembly is connected to the side of the motor facing the lower housing. The cavity formed by the motor and the pump body assembly is called the lower cavity of the motor, that is, the lower cavity of the motor constitutes a part of the first cavity. The cavity formed by the motor and the upper housing is called the upper cavity of the motor, that is, the second cavity, that is, the second cavity is located on the side of the motor away from the pump body assembly. As it has been found through research, the frequency characteristics of the noise of the compressor are usually above the 4500Hz frequency band, which are all modulated waves formed by the controller carrier frequency and the motor harmonic modulation, and this type of noise is caused by the vibration transmission through the upper cavity of the motor, that is, the second cavity. By arranging a support device capable of supporting the shell in the second cavity, the rigidity of the shell can be strengthened, and the structural mode of the upper cavity of the motor can be effectively improved, thereby reducing the high-frequency vibration transmission of the motor and reducing the high-frequency noise radiation, thereby reducing the modulation noise caused by the motor and the electronic control, and achieving a significant noise reduction effect. It can be understood that the support device is arranged in the second cavity, and therefore has no connection relationship with the crankshaft of the pump body assembly, and does not support the crankshaft.

[0029] In a possible design, the ratio of the distance between the supporting device and the motor to the height of the second cavity is less than or equal to 0.8 and greater than or equal to 0.05.

[0030] In this design, the area on the shell that is closer to the motor is easier to transmit the vibration of the motor. The smaller the distance between the support device and the motor, the more conducive it is to constrain the shell, thereby suppressing the vibration deformation of the shell. However, if the distance between the support device and the motor is too small, it will also cause processing difficulties and may affect the smooth passage of the lubricating oil. In addition, for second cavities of different heights, the value of the distance between the support device and the motor is different. By limiting the range of values ​​of the ratio of the distance between the support device and the motor to the height of the second cavity, on the one hand, it is possible to coordinate the contradiction between the constraint requirements on the shell and the processing difficulty and the passage requirements of the lubricating oil, reduce the processing difficulty and ensure the smooth passage of the lubricating oil while meeting the rigidity requirements of the shell; on the other hand, the value range can be adapted to compressors of different sizes, thereby expanding the scope of application of the embodiments of the present invention.

[0031] In a possible design, the supporting device is welded to the housing.

[0032] In this design, the connection method between the support device and the shell can specifically be welding. At this time, there can be a small gap between the support device and the shell, that is, the connection method is specifically a small gap matching welding method, which helps to reduce processing difficulty and improve processing efficiency.

[0033] In a possible design, the supporting device is interference fit with the housing.

[0034] In this design, an interference fit can be specifically used as the connection method between the support device and the shell, so that the support device and the shell are in full contact. On the one hand, it helps to increase the contact area between the support device and the shell. On the other hand, the support device can squeeze the shell during the interference fit, thereby improving the tightness of the fit, strengthening the constraint on the shell, and helping to fully suppress the vibration deformation of the shell.

[0035] In a possible design, the number of the supporting devices is at least two, and the at least two supporting devices are spaced apart and distributed along the height direction of the compressor.

[0036] In this design, it is specifically defined that the number of supporting devices is not limited to one, and when there are two or more, all supporting devices are spaced apart along the height direction of the compressor (substantially the same as the extension direction of the central axis of the first supporting portion of the supporting device), which not only ensures that the supporting devices do not interfere with each other, and each supporting device can form a reliable constraint relationship with the shell, but also strengthens the constraints on multiple positions of the shell, which helps to fully suppress the vibration deformation of the shell. Specifically, all supporting devices can be arranged evenly, that is, the spacing between two adjacent supporting devices can be equal, so as to simplify the structure and reduce the difficulty of processing; all supporting devices can also be arranged unevenly, that is, the spacing between two adjacent supporting devices can be unequal, so as to reasonably set the supporting devices according to the rigidity reinforcement requirements of the shell at different parts, which helps to fully strengthen the rigidity of the shell and achieve a significant noise reduction effect.

[0037] According to a third aspect of an embodiment of the present invention, a refrigeration system is provided, comprising a supporting device as provided by any of the above technical solutions or a compressor as provided by any of the above technical solutions, thereby having all the beneficial technical effects of the supporting device or the compressor, which will not be repeated here.

[0038] Additional aspects and advantages according to the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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:

[0040] Figure 1 A longitudinal cross-sectional view of a compressor without a supporting device according to an embodiment of the present invention is shown;

[0041] Figure 2 A longitudinal cross-sectional view of a compressor according to an embodiment of the present invention is shown;

[0042] Figure 3 A top view of a supporting device according to an embodiment of the present invention is shown.

[0043] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows:

[0044] 1 compressor, 100 supporting device, 110 supporting member, 112 first supporting portion, 114 second supporting portion, 116 spoke, 120 hollow portion, 200 housing, 210 upper housing, 220 main housing, 230 lower housing, 300 pump body assembly, 310 crankshaft, 400 motor, 410 stator, 420 rotor, 500 first cavity, 600 second cavity. DETAILED DESCRIPTION

[0045] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0047] Refer to the following Figures 1 to 3 The supporting device 100, the compressor 1 and the refrigeration equipment provided according to some embodiments of the present invention are described.

[0048] like Figure 2 As shown, an embodiment of the first aspect of the present invention provides a supporting device 100 for a compressor 1, such as Figure 3 As shown, the support device 100 includes a support member 110 and at least one hollow portion 120 , the support member 110 can be connected to the inner surface of the shell 200 of the compressor 1 to support the shell 200 ; at least one hollow portion 120 penetrates the support member 110 along the thickness direction of the support member 110 .

[0049] like Figure 1As shown, the compressor 1 includes a housing 200, a pump assembly 300 and a motor 400 located in the housing 200, and the motor 400 includes a stator 410 and a rotor 420. The rotor 420 of the motor 400 is sleeved on the crankshaft 310 of the pump assembly 300. The rotation of the rotor 420 of the motor 400 can drive the crankshaft 310 of the pump assembly 300 to rotate, thereby compressing the gas entering the pump assembly 300. The housing 200 specifically includes an upper housing 210, a main housing 220 and a lower housing 230 connected to each other. The stator 410 of the motor 400 is connected to the main housing 220, and the pump assembly 300 is connected to the side of the motor 400 facing the lower housing 230. The cavity formed by the motor 400 and the pump assembly 300 is called the lower cavity of the motor 400, and the cavity formed by the motor 400 and the upper housing 210 is called the upper cavity of the motor 400, that is, the upper cavity of the motor 400 is located on the side of the motor 400 away from the pump assembly 300. Research has found that the frequency characteristics of the noise of compressor 1 are usually above the 4500 Hz frequency band, which are all modulated waves formed by the controller carrier frequency and motor harmonic modulation, and this type of noise is caused by the vibration transmission of the upper cavity of motor 400.

[0050] The support device 100 provided in the embodiment of the present invention can be placed in the upper cavity of the motor 400 of the compressor 1. By providing a support member 110 connected to the inner surface of the shell 200 of the compressor 1, support can be provided for the shell 200 from the inside of the shell 200, specifically, the main shell 220 supporting the shell 200 corresponds to the part of the upper cavity of the motor 400, thereby forming a constraint relationship with the shell 200, which can suppress the vibration deformation of the shell 200, play a role in strengthening the rigidity of the shell 200, and can effectively improve the structural mode of the upper cavity of the motor 400, thereby reducing the high-frequency vibration transmission of the motor 400 and reducing the high-frequency noise radiation. The support device 100 can also increase the natural frequency of the upper cavity of the motor 400, reduce the risk of vibration transmission of the stator 410 and resonance of the upper cavity of the motor 400, and significantly reduce the high-frequency noise. Compared with the expansion muffler that can only reduce medium and low frequency noise, it can reduce high-frequency noise in a targeted manner, thereby effectively reducing the modulation noise caused by the motor 400 and the electronic control, and achieving a significant noise reduction effect. At the same time, the support device 100 is arranged in the upper cavity of the motor 400, and has no connection relationship with the crankshaft 310 of the pump body assembly 300, and does not support the crankshaft 310. In addition, by setting the hollow portion 120 that penetrates the support member 110, it is possible to avoid the support device 100 from blocking the upper cavity of the motor 400, and ensure that the lubricating oil in the compressor 1 passes smoothly through the hollow portion 120, thereby reducing the risk of oil accumulation in the upper cavity of the motor 400, and helping to ensure the reliable operation of the compressor 1. Furthermore, the support device 100 provided in the embodiment of the present invention has a simple structure and a simple process, which helps to reduce the production cost and is convenient for mass production. And when the support device 100 is applied to the compressor 1, it is only necessary to adapt the specific structure of the compressor 1 to carry out a specific structural design of the support device 100, without changing the housing 200, the motor 400 and other structures of the existing compressor 1, thereby reducing the cost of improving the existing product, thereby conveniently and reliably improving the noise reduction effect of the compressor 1 using the support device 100.

[0051] In some embodiments, Figure 3 As shown, the support member 110 includes a first support portion 112, a second support portion 114, and at least two spokes 116. The second support portion 114 is arranged around the first support portion 112, and the second support portion 114 can be connected to the inner surface of the housing 200; at least two spokes 116 are connected between the first support portion 112 and the second support portion 114, and at least two spokes 116 are spaced around the first support portion 112, and a hollow portion 120 is formed between two adjacent spokes 116.

[0052] In this embodiment, the support member 110 specifically includes a first support portion 112 and a second support portion 114 distributed inside and outside, and also includes a spoke 116 connected therebetween. The second support portion 114 can be directly connected to the housing 200 to provide direct support. The spoke 116 can transfer the support force borne by the second support portion 114 to the first support portion 112. Since the number of the spokes 116 is at least two and they are distributed around the first support portion 112, force transmission can be achieved from multiple directions around the first support portion 112, so as to achieve balanced force on the support member 110. Specifically, the spoke 116 can be optimized and designed according to the modal frequency of the upper cavity structure of the motor 400, which helps to ensure that the support member 110 can meet the stiffness requirements of the housing 200, thereby reducing the high-frequency vibration transmission of the motor 400 and reducing the high-frequency noise radiation, thereby reducing the modulation noise caused by the motor 400 and the electronic control, and achieving a significant noise reduction effect. At the same time, by adjusting the spacing between two adjacent spokes 116, the size of the hollow portion 120 can be designed as needed to ensure that the lubricating oil in the compressor 1 passes smoothly through the hollow portion 120, thereby reducing the risk of oil accumulation in the upper cavity of the motor 400, which helps to ensure the reliable operation of the compressor 1. In other words, by designing the support member 110 in this way, the hollow position and hollow size can be reasonably configured, which can reduce the risk of oil accumulation in the upper cavity of the motor 400, and meet the support requirements for the housing 200, ensuring that the housing 200 has sufficient rigidity, thereby reducing the operating noise of the compressor 1 using the support device 100.

[0053] Specifically, all the spokes 116 can be evenly distributed around the first support portion 112 to ensure uniform force. Further, the number of the spokes 116 can be configured as an even number. In this case, on the basis of uniform distribution, all the spokes 116 can be symmetrically distributed. For example, Figure 3 As shown, the four spokes 116 are evenly distributed at the top, bottom, left and right, which can further improve the uniformity and reliability of force.

[0054] In some embodiments, Figure 3 As shown, the first support portion 112 is a first support ring, and the first support ring forms a hollow portion 120 .

[0055] In this embodiment, it is specifically defined that the first support portion 112 is constructed as an annular structure, that is, the first support ring. On the one hand, the outer periphery of the first support ring forms a cylindrical surface, which has a high structural strength and can reliably withstand the external force transmitted through the spokes 116, thereby improving the support capacity of the support member 110, which helps to ensure the rigidity of the lifting shell 200. On the other hand, the interior of the first support ring is hollowed out to form a hollow portion 120, thereby increasing the hollow area of ​​the bearing device, facilitating the smooth passage of the lubricating oil in the compressor 1 through the hollow portion 120, thereby reducing the risk of oil accumulation in the upper cavity of the motor 400, and helping to ensure the reliable operation of the compressor 1.

[0056] In some other embodiments, the first support portion 112 may also be a solid structure, that is, it does not surround a hollow portion 120 .

[0057] In some embodiments, Figure 3 As shown, the second support portion 114 is a second support ring.

[0058] In this embodiment, it is specifically defined that the second support portion 114 is constructed as an annular structure, that is, a second support ring. Since the housing 200 of the compressor 1 is connected to the stator 410 of the motor 400, the inner surface of the housing 200 is generally a cylindrical surface. By setting the second support portion 114 as a second support ring, on the one hand, it can ensure that the second support portion 114 is reliably adapted to the housing 200, which helps to improve the support effect of the support member 110 on the housing 200. On the other hand, the second support ring can be continuously distributed along its circumference, so that each spoke 116 can be connected together, which helps to improve the structural stability of the spoke 116, and then ensure that the support member 110 is reliably stressed. The combination of the above two aspects can effectively improve the support strength of the support member 110, play a role in strengthening the rigidity of the housing 200, and can effectively improve the upper cavity structure mode of the motor 400, thereby reducing the high-frequency vibration transmission of the motor 400 and reducing the high-frequency noise radiation, thereby reducing the modulation noise caused by the motor 400 and the electronic control, and achieving a significant noise reduction effect.

[0059] In other embodiments, the second support portion 114 may be a discontinuous structure, such as a plurality of spaced-apart fan rings, one fan ring may be connected to one spoke 116, or may be connected to at least two spokes 116 to enhance the structural stability of the spokes 116 to a certain extent, and a hollow portion 120 may be formed between two adjacent fan rings, thereby increasing the hollow area of ​​the support device 100, so that the lubricating oil in the compressor 1 can pass smoothly through the hollow portion 120, thereby reducing the risk of oil accumulation in the upper cavity of the motor 400, and helping to ensure the reliable operation of the compressor 1.

[0060] In some embodiments, Figure 2 and Figure 3 As shown, the extended center line L1 of any spoke 116 intersects with the center axis L2 of the first support portion 112 .

[0061] In this embodiment, the extension direction of the spoke 116 is specifically defined. The extension direction of the extension center line L1 of the spoke 116 is recorded as the extension direction of the spoke 116. By making it intersect with the central axis L2 of the first support portion 112, the force direction of each spoke 116 can be concentrated on the central axis L2 of the first support portion 112, which helps to achieve balanced force on the support member 110. Further, the extension center line L1 of any spoke 116 is made perpendicular or approximately perpendicular to the central axis L2 of the first support portion 112 (that is, processing errors are allowed), so that the force direction of the spoke 116 is basically consistent with its extension direction, which can improve the structural strength of the support member 110. Accordingly, the cross-sections of the first support portion 112 and the second support portion 114 are made substantially equal along the central axis L2 of the first support portion 112 (that is, processing errors are allowed), so that the force direction of the spoke 116 is basically consistent with its extension direction. It can be understood that when the first support portion 112 and the second support portion 114 are coaxially arranged, the central axis L2 of the first support portion 112 is also the central axis of the support device 100 .

[0062] In some embodiments, any spoke 116 has a first end and a second end that are separated from each other; Figure 3 As shown, the extension width W of any spoke 116 at the first end of the spoke 116 is not equal to the extension width W of any spoke 116 at the second end of the spoke 116, and / or the thickness D of any spoke 116 at the first end of the spoke 116 is not equal to the thickness D of any spoke 116 at the second end of the spoke 116 ( Figure 2 The thickness D of the spoke 116 is shown. Figure 2 In the illustrated embodiment, the spokes 116 have a thickness D that is equal at the first end and the second end.

[0063] In this embodiment, the spoke 116 specifically includes a first end and a second end that are separated from each other, the first end is connected to one of the first support portion 112 and the second support portion 114, and the second end is connected to the other of the first support portion 112 and the second support portion 114. By making the extension width W and / or thickness D of the spoke 116 unequal at the first end and the second end, for example, making the extension width W of the end connected to the first support portion 112 smaller than the extension width W of the end connected to the second support portion 114, the extension width W and thickness D of the spoke 116 can be reasonably adjusted according to the stress conditions of the spoke 116 to improve the structural strength of the support member 110. Specifically, the spoke 116 can be optimized and designed according to the modal frequency of the upper cavity structure of the motor 400, which helps to ensure that the support member 110 can meet the stiffness requirements of the housing 200, thereby reducing the high-frequency vibration transmission of the motor 400 and reducing the high-frequency noise radiation, thereby reducing the modulation noise caused by the motor 400 and the electronic control, and achieving a significant noise reduction effect. In addition, by reasonably setting the extension width W of the spoke 116, the size of the hollow portion 120 can also be adjusted to ensure that the lubricating oil in the compressor 1 passes smoothly through the hollow portion 120, thereby reducing the risk of oil accumulation in the upper cavity of the motor 400, which helps to ensure the reliable operation of the compressor 1.

[0064] Furthermore, the extension width of any spoke 116 gradually changes from the first end of the spoke 116 to the second end of the spoke 116; and / or the thickness of any spoke 116 gradually changes from the first end of the spoke 116 to the second end of the spoke 116. That is, the extension width and / or thickness of the spoke 116 gradually changes along its extension direction (i.e., from the first end of the spoke 116 to the second end of the spoke 116). On the one hand, this can make the structure of the spoke 116 transition smoothly, reduce the stress concentration caused by the sudden change of the structure of the spoke 116, and help to improve the structural strength of the support member 110. On the other hand, the gradually changing spoke 116 has a simple structure and a simple manufacturing process, which helps to reduce the production cost and can be convenient for mass production. For example Figure 3 As shown, the extension width of the spoke 116 can be linearly increased from the end connected to the first support portion 112 to the end connected to the second support portion 114, so that the side wall structure of the spoke 116 is a plane, which can further simplify the structure of the spoke 116. For example, when the spoke 116 is a plastic injection molded part, the demolding difficulty can be reduced, which helps to reduce the production cost and facilitates the mass production of the support device 100.

[0065] In other embodiments, the extension width W and / or thickness D of the spoke 116 at the first end and the second end are equal, which can simplify the structure of the spoke 116. Furthermore, the extension width and / or thickness of the spoke 116 along its extension direction (i.e., from the first end of the spoke 116 to the second end of the spoke 116) is approximately equal everywhere (i.e., processing errors are allowed), which can further simplify its structure, simplify the manufacturing process, help reduce production costs, and facilitate mass production.

[0066] In some embodiments, the sum of the cross-sectional areas of at least one hollow portion 120 accounts for a proportion greater than or equal to 0.5 of the cross-sectional area of ​​the supporting device 100 .

[0067] In this embodiment, the hollow size of the support device 100 is limited. The sum of the cross-sectional areas of all the hollow portions 120 is the hollow area of ​​the support device 100, which can reflect the size of the hollow area. The cross-sectional area of ​​the support device 100 is the sum of the cross-sectional areas of all the hollow portions 120 and the cross-sectional area of ​​the support member 110, which is approximately equal to the cross-sectional area of ​​the cavity surrounded by the shell 200 connected to the support device 100, and can reflect the circulation area of ​​the lubricating oil when the support device 100 is not provided. When the cross-sectional area of ​​the support device 100 is constant, the larger the hollow area, the more conducive it is to the smooth passage of the lubricating oil. By limiting the ratio of the hollow area to the cross-sectional area of ​​the support device 100 to be greater than or equal to 0.5, it can be ensured that the lubricating oil in the compressor 1 passes smoothly through the hollow portion 120, thereby reducing the risk of oil accumulation in the upper cavity of the motor 400, which helps to ensure the reliable operation of the compressor 1. In addition, a hollow area that is too large may cause the support device 100 to be insufficiently strong, and may fail to meet the stiffness requirements of the upper cavity of the motor 400 of the compressor 1. Therefore, the hollow area should not be too large. The upper limit of the above-mentioned proportion is related to the structure of the compressor 1 to which the support device 100 is applied, and can be designed as needed, for example, 0.75, and is not specifically limited here.

[0068] Specifically, if Figure 3 FIG. 1 is a top view of a support device 100 according to an embodiment of the present invention. In the case where the cross section of the support structure is the same everywhere along its axial direction, Figure 3 The area of ​​the region enclosed by each of the four hollow portions 120 is equal to its cross-sectional area, the outer periphery of the second support portion 114 is the outer contour of the support device 100, and the area of ​​the circle enclosed by the outer contour of the support device 100 is equal to the cross-sectional area of ​​the support device 100. If the cross-sectional area of ​​the support structure is not the same everywhere along its axial direction, the average value of the cross-sectional area at different positions along the axial direction can be calculated.

[0069] The embodiment of the second aspect of the present invention provides a compressor 1, comprising a shell 200 and a supporting device 100 as provided in any of the above embodiments, and thus has all the beneficial technical effects of the supporting device, which will not be repeated here.

[0070] In some embodiments, the compressor 1 further includes a pump body assembly 300 and a motor 400 , the motor 400 and the housing 200 enclose a first cavity 500 and a second cavity 600 that are opposite to each other, the pump body assembly 300 is located in the first cavity 500 , and the support device 100 is located in the second cavity 600 .

[0071] In this embodiment, it is specifically defined that the compressor 1 further includes a pump assembly 300 and a motor 400, the motor 400 includes a stator 410 and a rotor 420, the rotor 420 of the motor 400 is sleeved on the crankshaft 310 of the pump assembly 300, and the rotation of the rotor 420 of the motor 400 can drive the crankshaft 310 of the pump assembly 300 to rotate, thereby compressing the gas entering the pump assembly 300. The housing 200 specifically includes an upper housing 210, a main housing 220, and a lower housing 230 connected to each other. The stator 410 of the motor 400 is connected to the main housing 220, the pump assembly 300 is connected to the side of the motor 400 facing the lower housing 230, the cavity formed by the motor 400 and the pump assembly 300 is called the lower cavity of the motor 400, that is, the lower cavity of the motor 400 constitutes a part of the first cavity 500, and the cavity formed by the motor 400 and the upper housing 210 is called the upper cavity of the motor 400, that is, the second cavity 600, that is, the second cavity 600 is located on the side of the motor 400 away from the pump assembly 300. As it has been found through research, the frequency characteristics of the noise of the compressor 1 are usually above the 4500Hz frequency band, which are all modulated waves formed by the controller carrier frequency and the motor harmonic modulation, and this type of noise is caused by the vibration transmission through the upper cavity of the motor 400, that is, the second cavity 600. By arranging a support device 100 capable of supporting the housing 200 in the second cavity 600, the rigidity of the housing 200 can be strengthened, and the upper cavity structural mode of the motor 400 can be effectively improved, thereby reducing the high-frequency vibration transmission of the motor 400 and reducing the high-frequency noise radiation, thereby reducing the modulation noise caused by the motor 400 and the electronic control, and achieving a significant noise reduction effect. It can be understood that the support device 100 is arranged in the second cavity 600, and thus has no connection relationship with the crankshaft 310 of the pump body assembly 300, and does not support the crankshaft 310.

[0072] In some embodiments, Figure 2 As shown, the ratio of the distance h between the supporting device 100 and the motor 400 to the height H of the second cavity 600 is less than or equal to 0.8 and greater than or equal to 0.05.

[0073] In this embodiment, the area on the housing 200 that is closer to the motor 400 is easier to transmit the vibration of the motor 400. The smaller the distance between the support device 100 and the motor 400, the more conducive it is to constrain the housing 200, thereby suppressing the vibration deformation of the housing 200. However, if the distance between the support device 100 and the motor 400 is too small, it will also cause processing difficulties and may affect the smooth passage of the lubricating oil. In addition, for the second cavity 600 of different heights, the value of the distance h between the support device 100 and the motor 400 is different. By limiting the range of values ​​of the ratio of the distance h between the support device 100 and the motor 400 to the height H of the second cavity 600, on the one hand, the contradiction between the constraint requirements of the housing 200 and the processing difficulty and the passage requirements of the lubricating oil can be coordinated, and the processing difficulty can be reduced while meeting the rigidity requirements of the housing 200, and the smooth passage of the lubricating oil can be guaranteed; on the other hand, the value range can be adapted to compressors 1 of different sizes, thereby expanding the scope of application of the embodiment of the present invention.

[0074] In some embodiments, the supporting device 100 is welded to the housing 200 .

[0075] In this embodiment, the connection method between the support device 100 and the shell 200 can be specifically welded. In this case, there can be a small gap between the support device 100 and the shell 200, that is, the connection method is specifically a small gap matching welding method, which helps to reduce the difficulty of processing and improve the processing efficiency. Specifically, taking the case where the support member 110 of the support device 100 includes a first support portion 112, a second support portion 114 and a spoke 116, and the second support portion 114 is a second support ring as an example, at this time, the outer surface of the second support ring is a continuous surface (that is, the surface of the second support portion 114 away from the spoke 116), and the welding point position can be set at any position of the continuous surface, which helps to reduce the gap between the support device 100 and the shell 200. A raised structure may also be provided on the surface of the second support portion 114 facing away from the spoke 116, so that the outer surface of the second support portion 114 is a discontinuous surface (i.e., the surface of the raised structure), and welding point positions may be provided on the discontinuous surface. On the one hand, reasonable welding point positions may be designed in advance, which helps to ensure that the support device 100 is reliably connected to the shell 200 and to form a reliable constraint on the shell 200. On the other hand, it eliminates the need to determine the welding point positions again during welding, which helps to reduce the difficulty of processing, reduce product failures caused by improper welding, and help to reduce the defective product rate and improve assembly efficiency.

[0076] In some embodiments, the supporting device 100 and the housing 200 are interference fit.

[0077] In this embodiment, an interference fit can be specifically adopted as the connection method between the support device 100 and the shell 200, so that the support device 100 and the shell 200 are in full contact. On the one hand, it helps to increase the contact area between the support device 100 and the shell 200. On the other hand, when the interference fit is adopted, the support device 100 can squeeze the shell 200, thereby improving the tightness of the fit, strengthening the constraint on the shell 200, and helping to fully suppress the vibration deformation of the shell 200.

[0078] In some embodiments, the number of the supporting devices 100 is at least two, and the at least two supporting devices 100 are spaced apart and distributed along the height direction of the compressor 1 .

[0079] In this embodiment, it is specifically defined that the number of the supporting devices 100 is not limited to one, and when there are two or more, all the supporting devices 100 are spaced apart along the height direction of the compressor 1 (substantially the same as the extension direction of the central axis L2 of the first supporting portion 112 of the supporting device 100), which not only ensures that the supporting devices 100 do not interfere with each other, and each supporting device 100 can form a reliable constraint relationship with the shell 200, but also strengthens the constraints on multiple positions of the shell 200, which helps to fully suppress the vibration deformation of the shell 200. Specifically, all the supporting devices 100 can be arranged evenly, that is, the spacing between two adjacent supporting devices 100 can be equal, so as to simplify the structure and reduce the difficulty of processing; all the supporting devices 100 can also be arranged unevenly, that is, the spacing between two adjacent supporting devices 100 can be unequal, so as to reasonably set the supporting devices 100 according to the rigidity reinforcement requirements of different parts of the shell 200, which helps to fully strengthen the rigidity of the shell 200 and achieve a significant noise reduction effect.

[0080] It is understandable that when the range of the ratio of the distance h between the support device 100 and the motor 400 to the height H of the upper cavity of the second cavity 600 and the motor 400 is defined, each support device 100 should meet the requirements of the range.

[0081] The embodiment of the third aspect of the present invention provides a refrigeration system, including the support device 100 provided in any of the above embodiments or the compressor 1 provided in any of the above embodiments, and thus having all the beneficial technical effects of the support device 100 or the compressor 1, which will not be described in detail here. Specifically, the refrigeration system can be a refrigerator or an air conditioner.

[0082] Furthermore, the refrigeration system may also include a condenser, a throttling device and an evaporator. Specifically, the refrigerant is compressed into a high-temperature and high-pressure gaseous refrigerant in the compressor 1, and the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 1 through the exhaust port on the shell 200 of the compressor 1, and then enters the condenser to condense and release heat, and the high-temperature and high-pressure gaseous refrigerant gradually changes into a high-pressure liquid refrigerant, and the high-pressure liquid refrigerant flows out of the condenser and then enters the throttling device for throttling, cooling and reducing pressure, and the high-pressure liquid refrigerant is converted into a low-temperature and low-pressure gas-liquid mixed state refrigerant, and then the low-temperature and low-pressure refrigerant flows out of the throttling device and enters the evaporator to absorb heat from the surrounding environment and continuously evaporate, and is converted into a low-pressure gaseous refrigerant, and the low-pressure gaseous refrigerant flows out of the evaporator and then re-enters the compressor 1 through the air inlet of the compressor 1 for compression, and the refrigeration system can operate continuously in this cycle, thereby cooling the air.

[0083] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A supporting device for a compressor, characterized in that: The supporting device comprises: a support member capable of being connected to an inner surface of a housing of the compressor to support the housing; and at least one hollow portion, wherein the at least one hollow portion penetrates the support member along a thickness direction of the support member; The support member comprises: a first support portion; a second supporting portion, the second supporting portion being disposed around the first supporting portion, the second supporting portion being capable of connecting to an inner surface of the housing; and at least two spokes, the at least two spokes are connected between the first support portion and the second support portion, the at least two spokes are spaced apart around the first support portion, a hollow portion is formed between two adjacent spokes, and lubricating oil in the compressor passes through the hollow portion; Any of the spokes has a first end and a second end that are separated from each other; The extension width of any of the spokes at the first end of the spokes is not equal to the extension width of any of the spokes at the second end of the spokes; The supporting device is arranged in the upper chamber of the motor of the compressor and is arranged separately from the crankshaft.

2. The support device according to claim 1, characterized in that: The first supporting portion is a first supporting ring, and the first supporting ring encloses the hollow portion; and / or The second supporting portion is a second supporting ring.

3. The supporting device according to claim 1, characterized in that: An extended center line of any of the spokes intersects with a central axis of the first supporting portion.

4. The supporting device according to claim 1, characterized in that: The thickness of any one of the spokes at the first end of the spoke is not equal to the thickness of any one of the spokes at the second end of the spoke.

5. The supporting device according to claim 4, characterized in that: The extension width of any of the spokes gradually changes from the first end of the spoke to the second end of the spoke; and / or The thickness of any one of the spokes gradually changes from the first end of the spoke to the second end of the spoke.

6. The supporting device according to any one of claims 1 to 5, characterized in that: The sum of the cross-sectional areas of the at least one hollow portion accounts for greater than or equal to 0.5 of the cross-sectional area of ​​the support device.

7. A compressor, characterized in that: The compressor comprises: a housing; and The supporting device according to any one of claims 1 to 6, wherein the supporting device is connected to the inner surface of the shell to support the shell.

8. The compressor according to claim 7, characterized in that The compressor also includes: Pump body assembly; A motor, wherein the motor and the shell enclose a first cavity and a second cavity which are separated from each other, the pump body assembly is located in the first cavity, and the supporting device is located in the second cavity.

9. The compressor according to claim 8, characterized in that The ratio of the distance between the supporting device and the motor to the height of the second cavity is less than or equal to 0.8 and greater than or equal to 0.

05.

10. The compressor according to any one of claims 7 to 9, characterized in that The supporting device is welded to the shell; or The supporting device is interference fit with the shell.

11. The compressor according to any one of claims 7 to 9, characterized in that The number of the supporting devices is at least two, and at least two of the supporting devices are spaced apart and distributed along the height direction of the compressor.

12. A refrigeration system, characterized in that: include: A support device as claimed in any one of claims 1 to 6; or A compressor as claimed in any one of claims 7 to 11.

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