Compressors, refrigeration systems and refrigeration equipment

Abstract

The present invention proposes a compressor, a refrigeration system and a refrigeration device, wherein the compressor comprises: a shell, the shell comprises a first section, a middle section and a second section, the middle section is provided with a first through hole and a second through hole; a stator structure, installed in the shell, located in the middle section; a rotor structure, rotatably penetrated in the stator structure; a first bearing structure, installed in the first section; a second bearing structure, installed in the second section, and the rotor is installed in the first bearing structure and the second bearing structure; a first compression structure, the interior of the first compression structure is connected to the interior of the middle section through the first bearing structure; a second compression structure, the interior of the second compression structure is connected to the interior of the middle section through the second bearing structure. The stator structure and the rotor structure are cooled by the refrigerant entering through the first through hole, while the first bearing structure is cooled by the refrigerant entering through the first compression structure, and the second bearing structure is cooled by the refrigerant entering through the second compression structure.

Description

Technical Field

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

[0002] At present, during the operation of centrifugal refrigeration compressors, the motor, as the main power input component, generates a large amount of heat. If it cannot be effectively cooled, the stator winding will overheat or even burn, and the rotor will also be damaged due to overheating. At the same time, excessive elongation of the rotor due to overheating will also cause damage to other components such as bearings. Summary of the invention

[0003] The present invention aims to solve or improve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of the present invention provides a compressor.

[0005] A second aspect of the present invention provides a refrigeration system.

[0006] A third aspect of the present invention provides a refrigeration device.

[0007] In view of this, according to a first aspect of the present invention, a compressor is proposed, comprising: a shell, the shell comprising a first section, a middle section and a second section from one end to the other end, the middle section being provided with a first through hole and a second through hole, the first through hole and the second through hole both being connected to the inside and the outside of the shell; a stator structure, installed in the shell and located in the middle section; a rotor structure, rotatably penetrated in the stator structure; a first bearing structure, installed in the first section; a second bearing structure, installed in the second section, and the rotor is installed in the first bearing structure and the second bearing structure; a first compression structure, arranged at one end of the first section away from the middle section, the interior of the first compression structure being connected to the interior of the middle section through the first bearing structure; a second compression structure, arranged at one end of the second section away from the middle section, the interior of the second compression structure being connected to the interior of the middle section through the second bearing structure.

[0008] The compressor proposed in the present invention includes a shell, a stator structure, a rotor structure, a first bearing structure, a second bearing structure, a first compression structure and a second compression structure, wherein the stator structure, the first bearing structure and the second bearing structure are arranged in the shell, specifically, along the axial direction of the shell, one end of the right shell to the other end is divided into three parts, namely, a first section, a middle section and a second section, the middle section is located between the first section and the second section, wherein the stator structure is located in the middle section, the first bearing structure is located in the first section, and the second bearing structure is located in the second section, and then the rotor structure is installed on the first bearing structure and the second bearing structure, and cooperates with the stator structure, and is respectively installed on the first compression structure and the second compression structure at both ends of the shell, that is, the first compression structure is installed in the first section, and the second compression structure is installed in the second section.

[0009] The first compression structure is connected to the interior of the shell, and when the first compression structure compresses the refrigerant, it leaks into the shell, specifically, into the interior of the first section, and the first section is provided with a first bearing structure, so the refrigerant entering the shell from the first compression structure can cool the first bearing structure. In addition, since the first bearing structure can connect the first compression structure and the internal space of the middle section, the refrigerant entering the first section can enter the middle section through the first bearing structure, thereby improving the cooling effect on the first bearing structure.

[0010] Similarly, the second compression structure is connected to the inside of the shell, and when the second compression structure compresses the refrigerant, it will leak into the inside of the shell, specifically, into the inside of the second section, and the second section is provided with a second bearing structure, so the refrigerant entering the shell from the second compression structure can cool the second bearing structure. In addition, since the second bearing structure can connect the second compression structure and the internal space of the middle section, the refrigerant entering the second section can enter the middle section through the second bearing structure, thereby improving the cooling effect of the second bearing structure.

[0011] In addition, a first through hole and a second through hole are provided on the middle section. The first through hole can connect the inside and the outside of the shell, and the second through hole can also connect the inside and the outside of the shell. Therefore, the first through hole can be used as an inlet for the refrigerant, and the second through hole can be used as an outlet for the refrigerant. Then, the refrigerant can be introduced through the first through hole to cool the stator structure and the rotor structure.

[0012] Furthermore, the refrigerant entering the middle section through the right first compression structure and the second compression structure is also discharged through the second through hole.

[0013] As mentioned above, in the compressor provided by the present invention, the stator structure and the rotor structure are cooled by the refrigerant entering the first through hole, the first bearing structure is cooled by the refrigerant entering the first compression structure, and the second bearing structure is cooled by the refrigerant entering the second compression structure. Therefore, the three-stage separate cooling method can provide a better refrigeration effect, and each individual refrigeration part does not require an excessively large refrigerant flow rate, thereby reducing the impact of the refrigerant on the stator structure, the rotor structure, the first bearing structure and the second bearing structure, thereby ensuring the stability of the compressor operation. In addition, there are only two connecting structures, the first through hole and the second through hole, in the middle section, and the structure is simple and easy to produce.

[0014] In addition, the compressor in the above technical solution provided by the present invention may also have the following additional technical features:

[0015] On the basis of the above technical solution, further, the stator structure includes: a main body, the main body includes a third through hole and a fourth through hole connected to each other, the third through hole is arranged along the axial direction of the main body, the rotor structure is passed through the third through hole, and the fourth through hole is arranged along the radial direction of the main body.

[0016] In this technical solution, the stator structure includes a main body and a third through hole and a fourth through hole arranged on the main body, the third through hole is arranged along the axial direction of the main body, and the fourth through hole is arranged along the radial direction of the main body, wherein the third through hole and the fourth through hole are connected, and then when the refrigerant is transported into the shell through the first through hole, a part of the refrigerant will enter the third through hole through the fourth through hole, thereby directly cooling the interior of the stator structure and the rotor structure, thereby improving the cooling effect on the stator structure and the rotor structure.

[0017] On the basis of any of the above technical solutions, further, the number of the fourth through holes is one or more. When the number of the fourth through holes is multiple, the multiple fourth through holes are evenly distributed in the main body.

[0018] In this technical solution, the number of through holes can be one or more, and the number of fourth through holes can be set according to the volume of the stator or actual needs, so as to achieve a better cooling effect. Moreover, when the number of fourth through holes is multiple, the multiple fourth through holes are evenly distributed in the main body, so as to achieve a uniform cooling effect and avoid local excessive temperature.

[0019] On the basis of any of the above technical solutions, further, along the axial direction of the main body, the fourth through hole is located in the middle position of the main body.

[0020] In this technical solution, the fourth through hole is located in the middle position of the main body along the axial direction of the main body, so that the purpose of uniform cooling can be achieved on both sides of the rotor structure along the axial direction, and the stroke of the refrigerant on both sides is within a reasonable range, thereby avoiding the situation where the temperature on one side of the rotor structure is too high and improving the refrigeration effect.

[0021] On the basis of any of the above technical solutions, further, a guide groove is provided on the inner wall of the middle section.

[0022] In this technical solution, a guide groove is provided inside the middle section so that the refrigerant can move along the corresponding path, thereby achieving a better cooling effect.

[0023] On the basis of any of the above technical solutions, further, the number of second through holes is two, and the guide groove includes: a first guide structure, which is spirally arranged in the middle section and connected to the first through hole; a second guide structure, which is spirally arranged in the middle section and connected to the first through hole.

[0024] In this technical solution, the guide groove includes a first guide structure and a second guide structure. The two guide structures are respectively formed in a spiral shape on both sides of the first through hole, thereby realizing the cooling of the stator structure from the middle position to both sides. Moreover, since it is a spiral structure, the outer side of the entire stator structure can be in contact with the refrigerant, and the contact time between the refrigerant and the stator structure is extended, thereby better taking away the heat of the stator structure and achieving a better cooling effect.

[0025] On the basis of any of the above technical solutions, it further includes: at least one first retaining rib and at least one second retaining rib, the first retaining rib is connected to one side wall of the guide groove, the second retaining rib is connected to the other side wall of the guide groove, and along the circumference of the shell, the first retaining rib and the second retaining rib are alternately arranged in the guide groove in sequence.

[0026] In this technical solution, a first rib and a second rib are provided in the guide groove, and one of the ribs is connected to one side wall of the guide groove, and the other is connected to the other side wall of the guide groove. The two ribs are staggered to form a curved flow space, thereby extending the flow path of the refrigerant, increasing the contact time between the refrigerant and the stator structure, thereby better taking away the heat of the stator structure and achieving a better cooling effect.

[0027] On the basis of any of the above technical solutions, further, the guide groove is an annular structure, surrounding the inner wall of the middle section.

[0028] In this technical solution, the guide groove surrounds the inner wall of the middle section, so that the surrounding side of the entire stator structure can be cooled by the refrigerant, thereby improving the cooling effect.

[0029] On the basis of any of the above technical solutions, further, along the axial direction of the shell, the first through hole is located in the middle of the middle section and is connected to the guide groove, and the number of the second through holes is two, which are respectively arranged on both sides of the middle section and are connected to the guide groove.

[0030] In this technical solution, along the axial direction of the main body, the first through hole is located in the middle position of the middle section, so that the purpose of uniform cooling can be achieved on both sides of the stator structure along the axial direction, and the stroke of the refrigerant on both sides is within a reasonable range, thereby avoiding the situation where the temperature on one side of the rotor structure is too high, thereby improving the refrigeration effect. The second through holes arranged on both sides of the first through hole can quickly discharge the refrigerant after cooling the compressor to ensure the circulation effect of the refrigerant and improve the cooling effect of the compressor.

[0031] On the basis of any of the above technical solutions, further, the compressor is a horizontal compressor, and connecting openings are provided on both side walls of the guide groove, and the guide openings are lower than one-third of the outer diameter of the guide groove; the connecting openings are higher than two-thirds of the outer diameter of the guide groove.

[0032] In this technical solution, the compressor is a horizontal compressor, the guide port is lower than one-third of the outer diameter of the guide groove, so that the refrigerant enters from the bottom, and the connecting port is higher than two-thirds of the outer diameter of the guide groove, so that the refrigerant is discharged from the top. The design of entering from the lower end and being discharged from the upper end allows the refrigerant to flow in the guide groove for a longer time to overcome gravity, and can also reduce the possibility of the refrigerant being interrupted when flowing in the shell, thereby improving the cooling effect.

[0033] On the basis of any of the above technical solutions, further, on the basis of any of the above technical solutions, further, the first compression structure includes: a first compression chamber and a first channel, the first channel connecting the first compression chamber and the interior of the shell; the second compression structure includes: a second compression chamber and a second channel, the second channel connecting the second compression chamber and the interior of the shell.

[0034] In this embodiment, the first compression structure includes a first compression chamber and a first channel. The refrigerant can be compressed in the first compression chamber and can leak into the interior of the shell through the first channel. Therefore, when the refrigerant is compressed, the refrigerant can leak into the shell through the first channel, thereby achieving cooling of the first bearing structure.

[0035] The second compression structure includes a second compression chamber and a second channel. The refrigerant can be compressed in the second compression chamber and can leak into the shell through the second channel. When the refrigerant is compressed, the refrigerant can leak into the shell through the second channel, thereby cooling the second bearing structure.

[0036] On the basis of any of the above technical solutions, further, the first bearing structure is an electromagnetic bearing structure, and the second bearing structure is an electromagnetic bearing structure.

[0037] In this technical solution, the first bearing structure and the second bearing structure are electromagnetic bearing structures, which have low friction and fast rotation speed. In addition, the gaps in the electromagnetic bearing structure can allow refrigerant to flow through, thereby improving the cooling effect on the first bearing structure and the second bearing structure.

[0038] On the basis of any of the above technical solutions, it further includes: a connecting pipe connecting the first compression structure and the second compression structure.

[0039] In this technical solution, the first compression structure and the second compression structure are connected through a connecting pipe, thereby achieving two-stage compression and improving the compression effect of the compressor.

[0040] According to a second aspect of the present invention, the present invention proposes a refrigeration system, comprising: a compressor provided by any one of the above technical solutions.

[0041] The refrigeration system proposed in the present invention includes a compressor provided by any one of the above technical solutions, and therefore has all the beneficial effects of the compressor provided by any one of the above technical solutions, which will not be stated one by one here.

[0042] On the basis of the above technical solution, it further includes: an evaporator connected to the first compression structure and the second through hole of the compressor; and a condenser connected to the first through hole and the second compression structure.

[0043] In this technical solution, the refrigeration equipment also includes an evaporator and a condenser. The gaseous refrigerant discharged from the evaporator is compressed by the first compression structure and the second compression structure, and leaks into the shell to cool the compressor, and finally the refrigerant discharged from the second compression structure enters the condenser.

[0044] The liquid refrigerant discharged from the condenser enters the shell through the first through hole, and after cooling the compressor, it becomes a gaseous refrigerant and enters the evaporator.

[0045] Furthermore, in the refrigeration system, the compressor is cooled while the refrigeration system is exchanging heat.

[0046] According to a third aspect of the present invention, the present invention proposes a refrigeration device, comprising: a compressor as proposed in any one of the above technical solutions; or a refrigeration system as proposed in any one of the above technical solutions.

[0047] The refrigeration equipment proposed in the present invention includes a compressor provided by any one of the above technical solutions or a refrigeration system provided by any one of the above technical solutions. Therefore, it has all the beneficial effects of the compressor provided by any one of the above technical solutions or the refrigeration system provided by any one of the above technical solutions, which are no longer stated one by one here.

[0048] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] 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:

[0050] Figure 1 A schematic structural diagram of a compressor provided by an embodiment of the present invention is shown;

[0051] Figure 2 A schematic structural diagram of another compressor provided by an embodiment of the present invention is shown;

[0052] Figure 3 A cross-sectional view of a compressor provided by one embodiment of the present invention is shown;

[0053] Figure 4 A cross-sectional view of a compressor provided by one embodiment of the present invention is shown;

[0054] Figure 5 A cross-sectional view showing another compressor provided by one embodiment of the present invention;

[0055] Figure 6 A cross-sectional view showing yet another compressor provided by one embodiment of the present invention.

[0056] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the component names is as follows:

[0057] 100 compressor, 110 housing, 112 first section, 114 middle section, 1142 first through hole, 1144 second through hole, 116 second section, 118 guide groove, 1182 first guide structure, 1184 second guide structure, 1186 first retaining rib, 1188 second retaining rib, 1190 first communication port, 1192 second communication port, 120 stator structure, 124 third through hole, 126 fourth through hole, 130 rotor structure, 140 first bearing structure, 150 The second bearing structure, 160 the first compression structure, 162 the first mounting part, 1622 the first mounting plate, 1624 the first sleeve, 164 the first impeller, 166 the first compression body, 1662 the first compression chamber, 168 the first channel, 170 the second compression structure, 172 the second mounting part, 1722 the second mounting plate, 1724 the second sleeve, 174 the second impeller, 176 the second compression body, 1762 the second compression chamber, 178 the second channel, 180 the connecting pipe. DETAILED DESCRIPTION

[0058] 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.

[0059] 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.

[0060] Refer to the following Figures 1 to 6 The compressor 100 provided according to some embodiments of the present invention is described.

[0061] Embodiment 1:

[0062] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention proposes a compressor 100 , including a housing 110 , a stator structure 120 , a rotor structure 130 , a first bearing structure 140 , a second bearing structure 150 , a first compression structure 160 and a second compression structure 170 .

[0063] The rotor structure 130 and the stator structure 120 are adapted to each other. When the stator structure 120 is energized, a magnetic field is generated, thereby driving the rotor structure 130 to rotate. In addition, the stator structure 120 is installed inside, and the rotor structure 130 is installed inside the shell 110 through the first bearing structure 140 and the second bearing structure 150. The first compression structure 160 is arranged at one end of the shell 110, and the second compression structure 170 is arranged at the other end of the shell 110.

[0064] Specifically, along the axial direction of the shell 110, the shell 110 includes a first section 112, a middle section 114 and a second section 116, the middle section 114 is located between the first section 112 and the second section 116, the stator is installed in the middle section 114, the first bearing structure 140 is installed in the first section 112, the first compression structure 160 is connected to the first section 112, the second bearing structure 150 is installed in the second section 116, and the second compression structure 170 is connected to the second section 116.

[0065] Furthermore, a first through hole 1142 and then a second through hole 1144 are provided on the middle section 114. The first through hole 1142 can connect the inside and the outside of the shell 110, and the second through hole 1144 can connect the inside and the outside of the shell 110. Then, refrigerant can be input into the shell 110 through the first through hole 1142 and then discharged from the second through hole 1144, thereby realizing the circulation of the refrigerant and achieving continuous cooling of the stator structure 120 and the rotor structure 130.

[0066] Furthermore, the first compression structure 160 is connected to the first section 112, so that when the first compression structure 160 performs the refrigerant compression operation, a part of the refrigerant will leak into the first section 112 to cool the first bearing structure 140, and a first flow channel is provided on the first bearing structure 140 along the axial direction of the first bearing structure 140, so that the refrigerant entering the first section 112 will pass through the first flow channel, thereby cooling the first bearing structure 140, and finally discharged from the first flow channel into the middle section 114, and then discharged from the second through hole 1144.

[0067] The second compression structure 170 is connected to the second section 116, so that when the second compression structure 170 performs the refrigerant compression operation, a part of the refrigerant will leak into the second section 116 to cool the second bearing structure 150, and a second flow channel is provided on the second bearing structure 150 along the axial direction of the second bearing structure 150, so that the refrigerant entering the second section 116 will pass through the second flow channel, thereby cooling the second bearing structure 150, and finally discharged into the middle section 114 through the second flow channel, and then discharged from the second through hole 1144.

[0068] The compressor 100 proposed by the present invention includes a housing 110, a stator structure 120, a rotor structure 130, a first bearing structure 140, a second bearing structure 150, a first compression structure 160 and a second compression structure 170, wherein the stator structure 120, the first bearing structure 140 and the second bearing structure 150 are arranged in the housing 110. Specifically, along the axial direction of the housing 110, the right housing 110 is divided into three parts from one end to the other end, namely, a first section 112, a middle section 114 and a second section 116. The middle section 114 is located in the first section 112. and the second section 116, wherein the stator structure 120 is located in the middle section 114, the first bearing structure 140 is located in the first section 112, and the second bearing structure 150 is located in the second section 116, and then the rotor structure 130 is installed on the first bearing structure 140 and the second bearing structure 150, and cooperates with the stator structure 120, and the first compression structure 160 and the second compression structure 170 are respectively installed at both ends of the shell 110, that is, the first compression structure 160 is installed in the first section 112, and the second compression structure 170 is installed in the second section 116.

[0069] The first compression structure 160 is connected to the interior of the shell 110, and when the first compression structure 160 compresses the refrigerant, it will leak into the interior of the shell 110, specifically, into the interior of the first section 112, and the first bearing structure 140 is provided in the first section 112, so the refrigerant entering the shell 110 from the first compression structure 160 can cool the first bearing structure 140. In addition, since the first bearing structure 140 can connect the first compression structure 160 and the internal space of the middle section 114, the refrigerant entering the first section 112 can enter the middle section 114 through the first bearing structure 140, thereby improving the cooling effect on the first bearing structure 140.

[0070] Similarly, the second compression structure 170 is connected to the inside of the shell 110, and when the second compression structure 170 compresses the refrigerant, it will leak into the inside of the shell 110, specifically, into the inside of the second section 116, and the second bearing structure 150 is provided in the second section 116, so the refrigerant entering the shell 110 from the second compression structure 170 can cool the second bearing structure 150. In addition, since the second bearing structure 150 can connect the second compression structure 170 and the internal space of the middle section 114, the refrigerant entering the second section 116 can enter the middle section 114 through the second bearing structure 150, thereby improving the cooling effect of the second bearing structure 150.

[0071] In addition, a first through hole 1142 and a second through hole 1144 are provided on the middle section 114. The first through hole 1142 can connect the inside and the outside of the shell 110, and the second through hole 1144 can also connect the inside and the outside of the shell 110. Therefore, the first through hole 1142 can be used as an inlet for the refrigerant, and the second through hole 1144 can be used as an outlet for the refrigerant. Then, the refrigerant can be introduced through the first through hole 1142 to cool the stator structure 120 and the rotor structure 130.

[0072] Furthermore, the refrigerant entering the middle section 114 through the right first compression structure 160 and the second compression structure 170 is also discharged through the second through hole 1144 .

[0073] As mentioned above, in the compressor 100 provided by the present invention, the stator structure 120 and the rotor structure 130 are cooled by the refrigerant entering through the first through hole 1142, and the first bearing structure 140 is cooled by the refrigerant entering through the first compression structure 160, and the second bearing structure 150 is cooled by the refrigerant entering through the second compression structure 170. Therefore, the three-stage separate cooling method can provide a better refrigeration effect, and each individual refrigeration part does not require an excessively large refrigerant flow rate, thereby reducing the impact of the refrigerant on the stator structure 120, the rotor structure 130, the first bearing structure 140 and the second bearing structure 150, thereby ensuring the stability of the operation of the compressor 100. In addition, there are only two connecting structures, the first through hole 1142 and the second through hole 1144, in the middle section 114, and its structure is simple and easy to produce.

[0074] Specifically, the stator structure 120 includes a stator core and a winding, and a magnetic field is generated when the winding is energized, thereby driving the rotor structure 130 to rotate. The rotor structure 130 includes a rotor core and a magnetic part. The magnetic part is driven by the magnetic field generated by the winding, thereby driving the rotor structure 130 to rotate.

[0075] Embodiment 2:

[0076] like Figure 1 , Figure 2 and Figure 3 As shown, on the basis of Embodiment 1, further, the stator structure 120 includes a main body, and a third through hole 124 arranged on the main body.

[0077] In this embodiment, the third through hole 124 penetrates the main body along the axial direction of the main body to facilitate the installation and cooperation of the rotor structure 130 and the stator structure 120, that is, the rotor structure 130 is rotatably arranged in the third through hole 124, and an air gap is formed between the stator structure 120 and the rotor structure 130.

[0078] Furthermore, the main body is provided with a fourth through hole 126 arranged along the radial direction of the main body. The fourth through hole 126 is connected to the third through hole 124 and forms an opening on the circumferential side of the main body.

[0079] In this embodiment, when the refrigerant is transported into the shell 110 through the first through hole 1142, the refrigerant can flow in the shell 110, and a fourth through hole 126 is provided on the main body of the stator structure 120. The refrigerant entering the shell 110 through the first through hole 1142 first contacts the outer peripheral side of the stator structure 120, and the fourth through hole 126 has an opening on the outer peripheral side, so that the refrigerant can flow into the third through hole 124 through the fourth through hole 126, and flow to the air gap between the stator structure 120 and the rotor structure 130, and then the refrigerant can connect with the interior of the stator structure 120 and the inner peripheral side of the stator structure 120, and the outer peripheral side of the rotor, thereby taking away the temperature of the inner peripheral side of the stator structure 120 and the rotor structure 130, achieving a better cooling effect on the stator structure 120, and achieving a better cooling effect on the rotor structure 130.

[0080] When the refrigerant passes through the fourth through hole 126 , it can take away the heat on the stator structure 120 inside the fourth through hole 126 , thereby reducing the temperature of the stator structure 120 .

[0081] Embodiment 3:

[0082] like Figure 3 As shown, based on Embodiment 2, further, the number of the fourth through hole 126 on the stator structure 120 can be one.

[0083] In this embodiment, a fourth through hole 126 is disposed on the stator structure 120 .

[0084] The number of the fourth through holes 126 on the stator structure 120 may be multiple, and the multiple fourth through holes 126 are evenly distributed in the main body of the stator structure 120 .

[0085] Specifically, two fourth through holes 126 are provided on the stator structure 120, and then the two fourth through holes 126 are relatively provided on the stator structure 120, and the angle formed between the two fourth through holes 126 is approximately 180 degrees, or three fourth through holes 126 are provided on the stator structure 120, and the angle between two adjacent fourth through holes 126 among the three fourth through holes 126 is approximately 120 degrees, or four fourth through holes 126 are provided on the stator structure 120, and the angle between two adjacent fourth through holes 126 among the four fourth through holes 126 is approximately 90 degrees. Of course, the number of the fourth through holes 126 on the stator structure 120 can also be set to 5, 6, 7 or 8 as needed.

[0086] Furthermore, the plurality of fourth through holes 126 can be used to simultaneously introduce refrigerant into the air gap at different positions, thereby simultaneously cooling multiple positions of the rotor structure 130 , thereby improving the cooling effect on the stator structure 120 and the rotor structure 130 .

[0087] Specifically, the number of through holes can be one or more, and the number of fourth through holes 126 can be set according to the volume of the stator or actual needs, so as to achieve a better cooling effect. Moreover, when the number of fourth through holes 126 is multiple, the multiple fourth through holes 126 are evenly distributed in the main body, so as to achieve a uniform cooling effect and avoid local excessive temperature.

[0088] Embodiment 4:

[0089] like Figure 1 and Figure 2 As shown, based on Example 2 or Example 3, further, based on the axial direction of the stator structure 120, the fourth through hole 126 is arranged in the middle of the main body of the stator structure 120. That is, the fourth through hole 126 is arranged at a position about half of the axial height of the main body of the stator structure 120.

[0090] In this embodiment, along the axial height of the main body, the fourth through hole 126 is located at a position about half the height of the main body, and thus the distance between the fourth through hole 126 and one end of the main body is approximately or the same as the distance between the fourth through hole 126 and the other end of the main body, so that the stator structure 120 and the rotor structure 130 on both sides of the fourth through hole 126 can have the same cooling effect, so that the cooling effect of the entire stator structure 120 and the rotor structure 130 is more uniform, avoiding local excessive temperature, and also making the paths from the fourth through hole to both sides of the stator structure 120 and the rotor structure 130 in a moderate range, so that the end of the stator structure 120 and the rotor structure 130 can be better cooled, thereby improving the cooling effect.

[0091] Embodiment 5:

[0092] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, on the basis of any one of Examples 1 to 4, further, the inner wall of the shell 110 is provided with a guide groove 118, which is located in the middle section 114, and the first through hole 1142 and the second through hole 1144 are both connected to the guide groove 118. Specifically, the stator structure 120 and the shell 110 are connected to form the guide groove 118, and the side wall of the guide groove 118 is provided with a connecting port connected to other spaces in the shell 110.

[0093] In this embodiment, the inner wall of the middle section 114 and the stator structure 120 form a guide groove 118, and the refrigerant entering the shell 110 through the first through hole 1142 moves along the flow provided by the guide groove 118, thereby constraining the movement of the refrigerant. In this way, the guide groove 118 can be designed rationally to achieve a better cooling effect.

[0094] Embodiment 6:

[0095] like Figure 1 , Figure 2 and Figure 4 As shown, on the basis of Example 5, further, two second through holes 1144 are provided on the shell 110, and the guide groove 118 includes a first guide structure 1182 and a second guide structure 1184. Along the axial direction of the shell 110, a first communication port 1190 is provided on the side of the first guide structure 1182 away from the first through hole 1142, and a second communication port 1192 is provided on the side of the second guide structure 1184 away from the first through hole 1142. The first guide structure 1182 is spirally provided on the inner wall of the middle section 114, and the second guide structure 1184 is spirally provided on the inner wall of the middle section 114. The structure 1184 is spirally arranged on the inner wall of the middle section 114, wherein the first flow guiding structure 1182 and the second flow guiding structure 1184 converge at the first through hole 1142, that is, the first flow guiding structure 1182 and the second flow guiding structure 1184 are respectively located on both sides of the first through hole 1142, and the first flow guiding structure 1182 is also provided with a first communication port 1190, which is connected to one second through hole 1144, and the second flow guiding structure 1184 is also provided with a second communication port 1192, which is connected to another second through hole 1144. Specifically, the first through hole 1142 is located in the middle of the middle section 114, and the first flow guiding structure 1182 and the second flow guiding structure 1184 are located on both sides of the first through hole 1142.

[0096] In this embodiment, the guide groove 118 includes a first guide structure 1182 and a second guide structure 1184. The two guide structures are respectively formed in a spiral shape on both sides of the first through hole 1142, thereby realizing the cooling of the stator structure 120 from the middle position to both sides. Moreover, since it is a spiral structure, the outer side of the entire stator structure 120 can be in contact with the refrigerant, and the contact time between the refrigerant and the stator structure 120 is extended, thereby better taking away the heat of the stator structure 120 and achieving a better cooling effect. Finally, the refrigerant in the first guide structure 1182 and the second guide structure 1184 can pass through different connecting ports and then flow out of the interior of the shell 110 through different second through holes 1144.

[0097] Specifically, such a flow-guiding structure can shorten the refrigerant's travel distance, thereby avoiding the refrigerant's absorption of a certain amount of heat in the second half of the flow, which results in a lower heat dissipation effect at the end, thereby making the overall heat dissipation effect more uniform.

[0098] Furthermore, the helical shape of the first flow guiding structure 1182 may be a single helix or a plurality of helices. The helical shape of the second flow guiding structure 1184 may be a single helix or a plurality of helices.

[0099] Embodiment 7:

[0100] like Figure 1 , Figure 2 and Figure 5 As shown, on the basis of Example 5, further, a first retaining rib 1186 and a second retaining rib 1188 are provided in the guide groove 118, and the two are staggeredly provided on the guide groove 118. In addition, along the axial direction of the housing 110, the first through hole 1142 is located in the middle of the guide groove 118. Specifically, two second through holes 1144 are provided on the housing 110. Along the axial direction of the housing 110, a first communication port 1190 is provided on the side of the guide groove 118 away from the first through hole 1142, and a second communication port 1192 is provided on the side of the guide groove 118 away from the first through hole 1142. Specifically, a plurality of first retaining ribs 1186 and second retaining ribs 1188 may be provided between the first through hole 1142 and the communication port.

[0101] Specifically, the guide groove 118 surrounds the entire middle section 114, and the guide groove 118 is formed with a bottom wall, a first side wall and a second side wall. The number of the first retaining ribs 1186 can be one or more, and the number of the second retaining ribs 1188 can be one or more, and multiple ones are taken as an example for description here.

[0102] A plurality of first barrier ribs 1186 are arranged on the first side wall, and the first barrier ribs 1186 are spaced apart from the second side wall. A plurality of second barrier ribs 1188 are arranged on the second side wall, and the second barrier ribs 1188 are spaced apart from the first side wall. In addition, a second barrier rib 1188 is arranged between adjacent first barrier ribs 1186, and a first barrier rib 1186 is arranged between adjacent second barrier ribs 1188, thereby forming a bendable flow channel structure.

[0103] In this embodiment, a first retaining rib 1186 and a second retaining rib 1188 are provided in the guide groove 118, and one of the retaining ribs is connected to one side wall of the guide groove 118, and the other is connected to the other side wall of the guide groove 118. The two are staggered to form a curved flow space, thereby extending the flow path of the refrigerant, increasing the contact time between the refrigerant and the stator structure 120, thereby better taking away the heat of the stator structure 120 and achieving a better cooling effect. Finally, the refrigerant in different guide grooves 118 can flow out of the interior of the shell 110 through the second through hole 1144.

[0104] Specifically, the length of the first retaining rib 1186 and the second retaining rib 1188 can be less than or equal to one tenth of the width of the guide groove 118 and greater than or equal to one half of the width of the guide groove 118 along the axial direction of the shell 110 .

[0105] Embodiment 8:

[0106] like Figure 1 , Figure 2 and Figure 6 As shown, on the basis of Example 5, further, the guide groove 118 is an annular structure, which is arranged on the inner wall of the middle section 114. In addition, along the axial direction of the housing 110, the first through hole 1142 is located in the middle of the guide groove 118. Specifically, two second through holes 1144 are arranged on the housing 110. Along the axial direction of the housing 110, a first communication port 1190 is arranged on the side of the guide groove 118 away from the first through hole 1142, and a second communication port 1192 is arranged on the side of the guide groove 118 away from the first through hole 1142.

[0107] In this embodiment, the guide groove 118 surrounds the inner wall of the middle section 114, so that the entire circumference of the stator structure 120 can be cooled by the refrigerant, thereby improving the cooling effect.

[0108] Embodiment 9:

[0109] like Figure 1 and Figure 2 As shown, on the basis of any one of Examples 1 to 8, further, the first through hole 1142 has one, which is arranged in the middle position of the middle section 114, that is, based on the axial direction of the shell 110, the first through hole 1142 is located at a position approximately half the height of the middle section 114, and is connected to the guide groove 118. The second through holes 1144 have two, and the two second through holes 1144 are respectively arranged on both sides of the first through hole 1142, thereby realizing two-way discharge of refrigerant.

[0110] In this embodiment, along the axial direction of the main body, the first through hole 1142 is located in the middle position of the middle section 114, so that the stator structure 120 can be evenly cooled on both sides along the axial direction, and the travel of the refrigerant on both sides is within a reasonable range, thereby avoiding the situation where the temperature on one side of the rotor structure 130 is too high, thereby improving the refrigeration effect. The second through holes 1144 arranged on both sides of the first through hole 1142 can quickly discharge the refrigerant after cooling the compressor 100, so as to ensure the circulation effect of the refrigerant and improve the cooling effect of the compressor 100.

[0111] Embodiment 10:

[0112] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, on the basis of any one of Examples 1 to 9, further, a first connecting port 1190 is provided on the first side wall of the guide groove 118, and a second connecting port 1192 is provided on the second side wall, and along the radial direction of the shell 110, the distance between the guide port connected to the first through hole 1142 and the guide groove 118, and the first connecting port 1190 is greater than or equal to one third of the outer diameter of the guide groove 118, and less than or equal to the outer diameter of the outer diameter of the guide groove 118.

[0113] Along the radial direction of the shell 110, the distance between the guide port where the first through hole 1142 communicates with the guide groove 118 and the second connecting port 1192 is greater than or equal to one third of the outer diameter of the guide groove 118, and less than or equal to the outer diameter of the outer diameter of the guide groove 118.

[0114] In this embodiment, along the radial direction of the shell 110, the distance between the guide port connected to the first through hole 1142 and the guide groove 118, and the first connecting port 1190 is greater than or equal to one-third of the outer diameter of the guide groove 118, thereby ensuring that the refrigerant entering the shell 110 through the guide port is discharged from the first connecting port 1190 after flowing a sufficiently long distance, thereby improving the cooling effect.

[0115] Along the radial direction of the shell 110, the distance between the guide port connected to the first through hole 1142 and the guide groove 118, and the second connecting port 1192 is greater than or equal to one-third of the outer diameter of the guide groove 118, thereby ensuring that the refrigerant entering the shell 110 through the guide port is discharged from the second connecting port 1192 after flowing a sufficiently long distance, thereby improving the cooling effect.

[0116] Furthermore, the first communication port 1190 faces the first section 112, and the second communication port 1192 faces the second section 116. The refrigerant discharged from the guide groove 118 through the first communication port 1190 can participate in cooling the end of the stator structure 120 and the end of the first bearing structure 140, and the refrigerant discharged from the guide groove 118 through the second communication port 1192 can participate in cooling the end of the stator structure 120 and the end of the second bearing structure 150.

[0117] Embodiment 11:

[0118] like Figure 1 and Figure 2 As shown, based on Example 10, further, the compressor 100 is a horizontal compressor 100, the guide port is lower than one-third of the outer diameter of the guide groove 118; the first connecting port 1190 is higher than two-thirds of the outer diameter of the guide groove 118, and the second connecting port 1192 is higher than two-thirds of the outer diameter of the guide groove 118.

[0119] In this embodiment, the compressor 100 is a horizontal compressor 100, and the guide port is lower than one-third of the outer diameter of the guide groove 118, so that the refrigerant enters from the bottom, and the first connecting port 1190 is higher than two-thirds of the outer diameter of the guide groove 118, so that the refrigerant is discharged from the top. The design of entering from the lower end and being discharged from the upper end allows the refrigerant to flow for a longer time in the shell 110 to overcome gravity, and can also reduce the possibility of the refrigerant being interrupted during flow in the shell 110, thereby improving the cooling effect.

[0120] The compressor 100 is a horizontal compressor 100, and the guide port is lower than one-third of the outer diameter of the guide groove 118, so that the refrigerant enters from the bottom, and the second connecting port 1192 is higher than two-thirds of the outer diameter of the guide groove 118, so that the refrigerant is discharged from the top. The design of entering from the lower end and being discharged from the upper end, in order to overcome gravity, the refrigerant will flow for a longer time in the shell 110, and it can also reduce the possibility of the refrigerant being interrupted during flow in the shell 110, thereby improving the cooling effect.

[0121] Embodiment 12:

[0122] like Figure 1 and Figure 2 As shown, on the basis of any one of Embodiments 1 to 11, further, the first compression structure 160 includes: a first mounting portion 162, which is disposed at one end of the housing 110; a first impeller 164, which is rotatable relative to the first mounting portion 162, and the first impeller 164 and one end of the rotor structure 130 are connected through the first mounting portion 162, and a first channel 168 is provided between the first impeller 164 and / or the rotor structure 130 and the first mounting portion 162; a first compression body 166, which is mounted on the first mounting portion 162 and / or the housing 110, and the first compression body 166 is provided with A first compression chamber 1662 is provided; the second compression structure 170 includes: a second mounting portion 172, which is disposed at the other end of the shell 110; a second impeller 174, which is rotatable relative to the second mounting portion 172, and the second impeller 174 and the other end of the rotor structure 130 are connected through the second mounting portion 172, and a second channel 178 is provided between the second impeller 174 and / or the rotor structure 130 and the second mounting portion 172; a second compression body 176, which is mounted on the second mounting portion 172 and / or the shell 110, and a second compression chamber 1762 is provided in the second compression body 176.

[0123] In this embodiment, the first compression structure 160 includes a first mounting portion 162, a first impeller 164, and a first compression body 166, wherein the first mounting portion 162 is connected to the shell 110, the first compression body 166 has a first compression chamber 1662, the first impeller 164 can compress the refrigerant in the first compression chamber 1662, and a first channel 168 is provided between the first mounting portion 162 and the first impeller 164 and / or the rotor structure 130, so that when the refrigerant is compressed, the refrigerant can leak from the first channel 168 into the first section 112, thereby cooling the first bearing structure 140.

[0124] The second compression structure 170 includes a second mounting portion 172, a second impeller 174, and a second compression body 176, wherein the second mounting portion 172 is connected to the shell 110, the second compression body 176 has a second compression chamber 1762, the second impeller 174 can compress the refrigerant in the second compression chamber 1762, and a second channel 178 is provided between the second mounting portion 172 and the second impeller 174 and / or the rotor structure 130, so that when compressing the refrigerant, the refrigerant can leak from the second channel 178 into the second section 116, thereby cooling the second bearing structure 150.

[0125] Embodiment 13:

[0126] like Figure 1 and Figure 2 As shown, on the basis of Example 12, further, the first mounting portion 162 includes: a first mounting plate 1622, connected to the housing 110; a first sleeve 1624, mounted on the first mounting plate 1622, and a first channel 168 is provided between the first impeller 164 and / or the rotor structure 130 and the first sleeve 1624; the second mounting portion 172 includes: a second mounting plate 1722, connected to the housing 110; a second sleeve 1724, mounted on the second mounting plate 1722, and a second channel 178 is provided between the second impeller 174 and / or the rotor structure 130 and the second sleeve 1724.

[0127] In this embodiment, the first mounting portion 162 includes a first mounting plate 1622 and a first sleeve 1624, and a first channel 168 is formed between the first impeller 164 and / or the rotor structure 130 and the first sleeve 1624, so that when the refrigerant is compressed, the refrigerant can leak into the first section 112 through the first channel 168, thereby cooling the first bearing structure 140, and the first sleeve 1624 can increase the service life of the first mounting portion 162 and reduce the wear of the first impeller 164 during rotation.

[0128] The second mounting portion 172 includes a second mounting plate 1722 and a second sleeve 1724. A second channel 178 is formed between the second impeller 174 and / or the rotor structure 130 and the second sleeve 1724. When the refrigerant is compressed, the refrigerant can leak into the second section 116 through the second channel 178, thereby cooling the second bearing structure 150. In addition, the second sleeve 1724 can increase the service life of the second mounting portion 172 and reduce the wear of the second impeller 174 during rotation.

[0129] Specifically, the first sleeve 1624 is a first sealing sleeve, and the second sleeve 1724 is a second sealing sleeve.

[0130] Embodiment 14:

[0131] like Figure 1 and Figure 2 As shown, on the basis of any one of Examples 1 to 13, further, the first bearing structure 140 and the second bearing structure 150 are both electromagnetic bearing structures.

[0132] In this embodiment, the first bearing structure 140 and the second bearing structure 150 are electromagnetic bearing structures. The electromagnetic bearing structure uses magnetic force to keep the inner ring in a suspended state, thereby reducing friction and increasing the rotation speed. In addition, the gaps in the electromagnetic bearing structure can allow refrigerant to flow through, thereby improving the cooling effect on the first bearing structure 140 and the second bearing structure 150.

[0133] Embodiment 15:

[0134] like Figure 2 As shown, on the basis of any one of Embodiments 1 to 14, a connecting pipe 180 is further connected between the first compression and the second compression structure 170. Specifically, the first compression chamber 1662 is connected to the connecting pipe 180, and then the refrigerant compressed for the first time by the first impeller 164 enters the first compression chamber 1662, flows into the second impeller 174 of the second compression structure 170, and then is further compressed in the second compression chamber 1762 after being pressurized by the second impeller 174, thereby forming a secondary compression. Specifically, the refrigerant in the second compression structure 170 can be discharged into the condenser.

[0135] In this embodiment, the first compression structure 160 and the second compression structure 170 are connected via the connecting pipe 180 , thereby realizing two-stage compression and improving the compression effect of the compressor 100 .

[0136] Specifically, Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The arrow direction indicates the flow direction of the refrigerant.

[0137] like Figure 2 As shown, the evaporator exhausts air to the first compression structure 160, the first compression structure 160 compresses the refrigerant, and part of the refrigerant enters the shell 110 to cool the first bearing structure 140. After passing through the first bearing structure 140, this part of the refrigerant enters the middle section 114 and can be discharged from the second through hole 1144. Another part of the refrigerant in the first compression structure 160 is discharged to the second compression structure 170 through the connecting pipe, and still part of the refrigerant enters the shell 110 and cools the second bearing structure 150. After passing through the first bearing structure 140, this part of the refrigerant enters the middle section 114 and can be discharged from the second through hole 1144. Another part of the refrigerant in the second compression structure 170 is discharged into the condenser. Specifically, the refrigerant entering the shell 110 from the first compression structure 160 and the second compression structure 170 is a gaseous refrigerant.

[0138] The refrigerant in the condenser enters the shell 110 through the first through hole 1142, and can cool the stator structure 120 through the guide groove 118. At the same time, a part of the refrigerant can enter the air gap through the fourth through hole 126 to cool the inner side of the stator structure 120 and the outer side of the rotor structure 130, while another part of the refrigerant located in the guide groove 118 is discharged from the guide groove 118 through the first connecting port 1190 and the second connecting port 1192, and can cool the first bearing structure 140 and the second bearing structure 150. In addition, the refrigerant in the shell 110 is finally discharged into the evaporator through the second through hole 1144.

[0139] like Figure 3 As shown, a portion of the refrigerant entering the guide groove 118 flows around the guide groove 118 , and another portion enters the air gap through the fourth through hole 126 .

[0140] like Figure 4 As shown, the refrigerant entering the guide groove 118 through the first through hole 1142 passes through the first guide structure 1182 and the second guide structure 1184 respectively, and then exits the guide groove 118 through the first communication port 1190 and the second communication port 1192 .

[0141] like Figure 5 As shown, the refrigerant entering the guide groove 118 through the first through hole 1142 is deflected by passing through the first blocking rib 1186 and the second blocking rib 1188 respectively, and then discharged from the guide groove 118 through the first connecting port 1190 and the second connecting port 1192.

[0142] like Figure 5 As shown, the refrigerant entering the guide groove 118 through the first through hole 1142 passes through the guide groove 118 respectively, and then exits the guide groove 118 through the first communication port 1190 and the second communication port 1192 .

[0143] Embodiment 16:

[0144] The compressor 100 provided by the present invention includes a three-way refrigerant circuit for cooling the stator structure 120 , the rotor structure 130 , the first bearing structure 140 and the second bearing structure 150 respectively.

[0145] Cooling of the stator structure 120: An annular guide groove 118 is formed between the outer side of the stator structure 120 and the inner side of the shell 110. After the refrigerant enters the annular guide groove 118, the stator structure 120 is cooled through the annular guide groove 118, and flows out from the connecting port from both sides to cool the windings on the stator structure 120 and the ends of the first bearing structure 140 and the second bearing structure 150.

[0146] Cooling of the rotor structure 130: The stator structure 120 is provided with a fourth through hole 126. After the refrigerant enters the fourth through hole 126, it cools the surface of the rotor structure 130. According to the actual heat generation, 0, 1 or more fourth through holes 126 can be provided.

[0147] Cooling of the first bearing structure 140: The refrigerant gas in the main circuit of the compressor 100 enters the interior of the casing 110 from the rear side of the first impeller 164 through the seal at the rear end of the first impeller 164, passes through the first bearing structure 140 and cools it. At the same time, part of the refrigerant in the guide groove 118 that cools the stator structure 120 will also participate in the cooling of the first bearing structure 140.

[0148] Cooling of the second bearing structure 150: The refrigerant gas in the main circuit of the compressor 100 enters the interior of the casing 110 from the rear side of the second impeller 174 through the seal at the rear end of the second impeller 174, passes through the second bearing structure 150 and cools it. At the same time, part of the refrigerant in the guide groove 118 that cools the stator structure 120 will also participate in the cooling of the second bearing structure 150.

[0149] Specifically, the compressor 100 is a horizontal compressor 100, and a connecting port is arranged on each side of the guide groove 118, and the position of the connecting port is higher than 2 / 3 of the diameter of the annular flow channel.

[0150] The guide groove 118 has three arrangements: spiral, baffled and straight.

[0151] The stator structure 120 is provided with a fourth through hole 126 for cooling the rotor structure 130 . The fourth through hole 126 is located lower than the connecting port. Depending on the heat generated by the rotor structure 130 , there may be 0, 1 or more fourth through holes 126 .

[0152] A first impeller 164 and a second impeller 174 are respectively provided on both sides of the compressor 100. The first impeller 164 is sealed at the rear end to enter the housing 110 to cool the first bearing structure 140, and the second impeller 174 is sealed at the rear end to enter the housing 110 to cool the second bearing structure 150.

[0153] Embodiment 17:

[0154] The present invention provides a refrigeration system, comprising: a compressor 100 provided in any of the above embodiments.

[0155] The refrigeration system proposed in the present invention includes the compressor 100 provided in any of the above embodiments, and therefore has all the beneficial effects of the compressor 100 provided in any of the above embodiments, which will not be described one by one here.

[0156] Embodiment 18:

[0157] On the basis of Example 17, it further includes: an evaporator and a condenser, the evaporator is connected to the first compression structure 160 of the compressor 100, and is also connected to the second through hole 1144 of the compressor 100; the condenser is connected to the first through hole 1142 of the compressor 100, and is also connected to the second compression structure 170 of the compressor 100.

[0158] In this embodiment, the refrigeration equipment also includes an evaporator and a condenser. The gaseous refrigerant discharged from the evaporator is compressed by the first compression structure 160 and the second compression structure 170, and leaks into the shell 110 to cool the compressor 100, and finally the refrigerant discharged from the second compression structure 170 enters the condenser.

[0159] The liquid refrigerant discharged from the condenser enters the housing 110 through the first through hole 1142, and after cooling the compressor 100, it becomes a gaseous refrigerant and enters the evaporator.

[0160] Furthermore, in the refrigeration system, the compressor 100 is cooled while the refrigeration system is exchanging heat.

[0161] Embodiment 19:

[0162] The present invention provides a refrigeration device, comprising: a compressor 100 provided in any one of the above embodiments; or a refrigeration system provided in any one of the above embodiments.

[0163] The refrigeration equipment provided by the present invention includes the compressor 100 provided in any of the above embodiments or the refrigeration system provided in any of the above embodiments. Therefore, it has all the beneficial effects of the compressor 100 provided in any of the above embodiments or the refrigeration system provided in any of the above embodiments, which are no longer stated one by one here.

[0164] Specifically, the refrigeration equipment may be equipment such as a refrigerator or an air conditioner.

[0165] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0166] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front” and “back” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0167] 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.

[0168] The above description is only a preferred embodiment of the present invention and is 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 compressor, characterized in that: include: A shell, the shell comprising a first section, a middle section and a second section from one end to the other end, the middle section being provided with a first through hole and a second through hole, the first through hole and the second through hole both being connected to the inside and the outside of the shell, and the refrigerant being introduced through the first through hole; a stator structure, installed in the housing and located in the middle section; A rotor structure, rotatably disposed on the stator structure; a first bearing structure installed in the first section; a second bearing structure mounted in the second section, and the rotor structure mounted on the first bearing structure and the second bearing structure; A first compression structure is provided at one end of the first section away from the middle section, the interior of the first compression structure being connected to the interior of the middle section through the first bearing structure; A second compression structure is provided at one end of the second section away from the middle section, the interior of the second compression structure being connected to the interior of the middle section via a second bearing structure; The inner wall of the middle section is provided with a guide groove; The guide groove comprises: A first flow guiding structure is spirally disposed in the middle section and is connected to the first through hole. The first flow guiding structure is provided with a first communication port, and the refrigerant discharged from the flow guiding groove through the first communication port can cool the end of the first bearing structure; A second flow guiding structure is spirally disposed in the middle section and communicated with the first through hole. The second flow guiding structure is provided with a second communication port. The refrigerant discharged from the flow guiding groove through the second communication port can cool the end of the second bearing structure. The stator structure comprises: A main body, the main body comprising a third through hole and a fourth through hole connected to each other, the third through hole being arranged along the axial direction of the main body, the rotor structure passing through the third through hole, the fourth through hole being arranged along the radial direction of the main body, and an air gap being formed between the stator structure and the rotor structure; Along the axial direction of the shell, the first through hole is located in the middle of the middle section and is connected to the guide groove, and the number of the second through holes is two, which are respectively arranged at two sides of the middle section and are connected to the guide groove; The height of the guide port through which the first through hole communicates with the guide groove is lower than the height of the first connecting port; and / or The height of the guide port where the first through hole communicates with the guide groove is lower than the height of the second communication port.

2. The compressor according to claim 1, characterized in that The number of the fourth through holes is one or more. When the number of the fourth through holes is plural, the plurality of fourth through holes are evenly distributed in the main body.

3. The compressor according to claim 1, characterized in that Along the axial direction of the main body, the fourth through hole is located in the middle of the main body.

4. The compressor according to any one of claims 1 to 3, characterized in that The guide groove is an annular structure and surrounds the inner wall of the middle section.

5. The compressor according to any one of claims 1 to 3, characterized in that The compressor is a horizontal compressor, The guide port is lower than one third of the outer diameter of the guide groove; The first communication opening and the second communication opening are both higher than two-thirds of the outer diameter of the guide groove.

6. The compressor according to any one of claims 1 to 3, characterized in that The first compression structure comprises: a first compression chamber and a first passage, wherein the first passage communicates with the first compression chamber and the interior of the housing; The second compression structure comprises: A second compression chamber and a second passage, wherein the second passage communicates the second compression chamber and the interior of the shell.

7. The compressor according to any one of claims 1 to 3, characterized in that The first bearing structure is an electromagnetic bearing structure, and the second bearing structure is an electromagnetic bearing structure.

8. The compressor according to any one of claims 1 to 3, characterized in that Also includes: A connecting pipe connects the first compression structure and the second compression structure.

9. A refrigeration system, characterized in that: include: A compressor as claimed in any one of claims 1 to 8.

10. The refrigeration system according to claim 9, characterized in that: Also includes: an evaporator connected to the first compression structure of the compressor and the second through hole of the compressor; A condenser is connected to the first through hole of the compressor and the second compression structure of the compressor.

11. A refrigeration device, characterized in that: include: A compressor as claimed in any one of claims 1 to 8; or A refrigeration system as claimed in claim 9 or 10.

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