Compressor

Abstract

The compressor comprises an air cylinder, a flange, a crankshaft and an oil passing container, the flange is installed on the air cylinder, a compression cavity is formed in the air cylinder, a shaft hole is formed in the flange, the crankshaft penetrates through the compression cavity and the shaft hole, an oil discharge outlet is formed in the crankshaft, an oil passing channel is formed in the flange, the oil passing container is provided with an oil inlet and an oil outlet, and an air suction channel is formed in the air cylinder. The oil passing container is installed in the air suction channel, the oil inlet and the oil outlet are both communicated with the outside of the air cylinder, lubricating oil discharged from the oil discharge outlet can enter the oil inlet through the oil passing channel, and the lubricating oil flowing through the oil passing container can exchange heat with a refrigerant flowing through the air suction channel. According to the motor cooling device, in the circulating process that the lubricating oil is pumped to the position above the motor by the crankshaft to cool the motor and then returns to the bottom oil pool, the low-temperature refrigerant cools the lubricating oil with the high temperature in a heat exchange mode, so that the temperature of the lubricating oil is reduced, and effective cooling of the motor can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of compressor design, and in particular relates to a compressor. Background Art

[0002] The parts of the compressor that generate the most heat during operation are the motor and the pump body. The motor has strict requirements for the operating temperature. Exceeding the operating temperature will damage the enameled wire and plastic parts, thus causing the motor to fail. Lubricating oil in the compressor has the functions of reducing the friction of moving parts, sealing the pump body, and cooling the motor and pump body. Under normal circumstances, the lubricating oil will return to the oil pool at the bottom of the shell after cooling the motor, and then continue to be pumped to the top of the motor by the crankshaft to cool the motor again to form a cycle. However, there is a lack of a link to cool the refrigeration oil in the middle, resulting in a high temperature of the refrigeration oil and an insignificant cooling effect on the motor and pump body. Summary of the invention

[0003] Therefore, the present invention provides a compressor that can solve the technical problem that the lubricating oil in the compressor returns to the oil pool at the bottom of the shell after cooling the motor, and then continues to be pumped to the top of the motor by the crankshaft to cool the motor again to form a cycle. However, due to the lack of a link in the middle to cool the refrigeration oil, the refrigeration oil temperature is high and the cooling effect on the motor is not obvious.

[0004] In order to solve the above problems, the present invention provides a compressor, including a cylinder, a flange, a crankshaft and an oil container, the flange is installed on the cylinder, a compression chamber is formed on the cylinder, an axial hole is formed on the flange, the crankshaft passes through the compression chamber and the axial hole, an oil discharge port is constructed on the crankshaft, an oil passage is constructed on the flange, the oil container has an oil inlet and an oil outlet, an air intake channel is constructed on the cylinder, the oil container is installed in the air intake channel, the oil inlet and the oil outlet are both connected to the outside of the cylinder, the lubricating oil discharged from the oil discharge port can enter the oil inlet through the oil passage, and the lubricating oil flowing through the oil container can undergo heat exchange with the refrigerant flowing through the air intake channel.

[0005] In some embodiments, the intake channel includes a main channel constructed on the cylinder, the main channel is connected to the compression chamber, the main channel is also connected to the gas-liquid separator through a main intake pipe, and a first inlet and a first outlet connected to the main channel are also constructed on the cylinder. The oil container is installed in the main channel, the oil inlet corresponds to the first inlet, and the oil outlet corresponds to the first outlet.

[0006] In some embodiments, the oil passage includes a first oil guide hole constructed in the flange and an oil guide groove constructed on the cylinder, the oil guide groove is located on the end surface of the flange facing the cylinder, the first inlet is constructed on the end surface of the cylinder facing the flange, the end surface of the cylinder facing the flange covers the oil guide groove, the oil guide groove is connected to the oil inlet, and the oil outlet is connected to the oil guide groove through the first oil guide hole.

[0007] In some embodiments, an exhaust port is configured on the cylinder, and the exhaust port is adjacent to the oil guide groove; and / or a sliding vane groove is configured on the cylinder, and the oil guide groove passes through the sliding vane groove.

[0008] In some embodiments, the intake channel includes a main channel constructed on the cylinder and a secondary channel constructed on the cylinder, the main channel and the secondary channel are both connected to the compression chamber, the main channel is also connected to the gas-liquid separator through a main intake pipe, and the secondary channel is also connected to the gas-liquid separator through a secondary intake pipe. The cylinder is also configured with a second inlet and a second outlet connected to the secondary channel, the oil container is installed in the secondary channel, the oil inlet corresponds to the second inlet, and the oil outlet corresponds to the second outlet.

[0009] In some embodiments, the cylinder has a protrusion on the side facing the flange, the secondary channel is constructed in the protrusion, the second inlet and the second outlet are both constructed on the protrusion, an avoidance notch is formed on the flange, and the protrusion is located in the avoidance notch; and / or, the secondary channel is connected to the compression chamber through the main channel.

[0010] In some embodiments, the oil passage includes a second oil guide hole constructed on the hole wall of the shaft hole, one end of the second oil guide hole is connected to the oil discharge port, the other end of the second oil guide hole is connected to an oil pipe, and the end of the oil pipe away from the second oil guide hole is connected to the oil inlet.

[0011] In some embodiments, a control valve is provided on the oil passage, and the control valve can control whether the oil passage is conductive and the size of the conductive area according to the temperature change in the compressor.

[0012] In some embodiments, the oil passage includes a first pipe section and a second pipe section, the control valve includes a shell and a valve core, the shell has a accommodating channel, the shell is configured with a first interface and a second interface communicating with the accommodating channel, the valve core is configured with a communicating channel that runs through the valve core, one end of the first pipe section is communicated with the second oil guide hole, the other end of the first pipe section is communicated with the first interface, one end of the second pipe section is communicated with the second interface, and the other end of the second pipe section is communicated with the oil inlet; the valve core is arranged in the accommodating channel, the valve core has a conducting state and a shutoff state, in the conducting state, the two ends of the communicating channel are respectively communicated with the first interface and the second interface, in the shutoff state, the communicating channel is not communicated with the first interface and the second interface, and the valve core can switch between the conducting state and the shutoff state according to the temperature change in the compressor.

[0013] In some embodiments, the shell includes an end wall and a peripheral side wall on the end wall, the end wall and the peripheral side wall enclose the accommodating channel, the valve core is slidingly sealed with the accommodating channel, there is a distance between one end of the valve core facing the end wall and the end wall, and the space between one end of the valve core facing the end wall and the end wall is filled with gas.

[0014] In some embodiments, the air intake passage has at least a partial section extending along the circumference of the cylinder; and / or a groove surrounding the axial hole is constructed on the hole wall of the axial hole, and the oil discharge port is connected to the oil passage through the groove.

[0015] In some embodiments, a flow direction of the lubricating oil when flowing through the oil transfer container is opposite to a flow direction of the refrigerant when flowing through the air intake passage.

[0016] The compressor provided by the present invention has the following beneficial effects:

[0017] An oil discharge port is constructed on the crankshaft, an oil passage is constructed on the flange, and an oil container is installed in the air intake channel of the cylinder, and the oil inlet and oil outlet of the oil container are both connected to the outside of the cylinder. When the lubricating oil after cooling the motor is discharged through the oil discharge port of the crankshaft and enters the oil inlet through the oil passage, the lubricating oil will flow in the oil container and be discharged from the oil outlet. In the process of flowing through the oil container, the lubricating oil will exchange heat with the low-temperature refrigerant flowing through the air intake channel through the oil container, thereby achieving cooling of the lubricating oil. The cooled lubricating oil is discharged to the oil pool at the bottom of the compressor through the oil outlet. That is, in the circulation process in which the lubricating oil is pumped to the top of the motor by the crankshaft to cool the motor and then returns to the bottom oil pool, the low-temperature refrigerant cools the lubricating oil with a higher temperature by heat exchange, thereby reducing the temperature of the lubricating oil, thereby achieving effective cooling of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 is a side perspective view of a compressor according to Embodiment 1 of the present invention;

[0020] Figure 2 A perspective view of a flange of a compressor according to a first embodiment of the present invention in a first visual sense;

[0021] Figure 3 A perspective view of a flange of a compressor according to Embodiment 1 of the present invention under a second visual perspective;

[0022] Figure 4 A perspective view of a cylinder of a compressor according to a first embodiment of the present invention in a first visual sense;

[0023] Figure 5 A perspective view of a cylinder of a compressor according to Embodiment 1 of the present invention under a second visual perspective;

[0024] Figure 6 It is a structural schematic diagram of an oil container of a compressor according to an embodiment of the present invention;

[0025] Figure 7 is a top perspective view of a compressor according to Embodiment 1 of the present invention;

[0026] Figure 8 is a side perspective view of a compressor according to a second embodiment of the present invention;

[0027] Fig. 9 is a perspective view of a cylinder of a compressor according to a second embodiment of the present invention;

[0028] Fig.10 is a perspective view of a flange of a compressor according to a second embodiment of the present invention;

[0029] Fig.11 A perspective view of a control valve of a compressor according to a second embodiment of the present invention;

[0030] Fig.12 A perspective view of a compressor control valve according to a second embodiment of the present invention when the control valve is not in communication with the first pipe section and the second pipe section;

[0031] Fig.13 This is a perspective view of a compressor control valve in accordance with a second embodiment of the present invention when in communication with a first pipe section and a second pipe section.

[0032] The reference numerals are as follows:

[0033] 1. Cylinder; 2. Flange; 3. Crankshaft; 4. Oil container; 5. Compression chamber; 6. Shaft hole; 7. Oil drain port; 8. Oil inlet port; 9. Oil outlet port; 10. Main channel; 11. Main suction pipe; 12. Gas-liquid separator; 13. First inlet port; 14. First outlet port; 15. First oil guide hole; 16. Oil guide groove; 17. Secondary channel; 18. Secondary suction pipe; 19. Second inlet port; 20. Second outlet port; 21. Raised portion; 22. Avoidance gap; 23. Second oil guide hole; 24. Oil pipe; 241. First pipe section; 242. Second pipe section; 25. Control valve; 251. Housing; 252. Valve core; 26. Groove; 27. Motor; 28. Socket; 29. ​​Exhaust port; 30. Sliding vane groove. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0037] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0038] See also Figures 1 to 13 As shown, according to an embodiment of the present invention, a compressor is provided, including a cylinder 1, a flange 2, a crankshaft 3 and an oil container 4, the flange 2 is installed on the cylinder 1, a compression chamber 5 is formed on the cylinder 1, an axial hole 6 is formed on the flange 2, the crankshaft 3 passes through the compression chamber 5 and the axial hole 6, an oil discharge port 7 is constructed on the crankshaft 3, an oil passage is constructed on the flange 2, the oil container 4 has an oil inlet 8 and an oil outlet 9, an air intake channel is constructed on the cylinder 1, the oil container 4 is installed in the air intake channel, the oil inlet 8 and the oil outlet 9 are both connected to the outside of the cylinder 1, the lubricating oil discharged from the oil discharge port 7 can enter the oil inlet 8 through the oil passage, and the lubricating oil flowing through the oil container 4 can undergo heat exchange with the refrigerant flowing through the air intake channel.

[0039] In this technical solution, an oil discharge port 7 is constructed on the crankshaft 3, an oil passage is constructed on the flange 2, an oil container 4 is installed in the air intake channel of the cylinder 1, and the oil inlet 8 and the oil outlet 9 of the oil container 4 are both connected to the outside of the cylinder 1. When the lubricating oil after cooling the motor is discharged through the oil discharge port 7 of the crankshaft 3 and enters the oil inlet 8 through the oil passage, the lubricating oil will flow in the oil container 4 and be discharged from the oil outlet 9, and the lubricating oil will exchange heat with the low-temperature refrigerant flowing through the air intake channel through the oil container 4 during the process of flowing through the oil container 4, so that the lubricating oil can be cooled, and the cooled lubricating oil is discharged to the oil pool at the bottom of the compressor through the oil outlet 9. That is, in the circulation process in which the lubricating oil is pumped by the crankshaft 3 to the top of the motor 27 to cool the motor 27 and then returns to the bottom oil pool, the low-temperature refrigerant cools the lubricating oil with a higher temperature by heat exchange, thereby reducing the temperature of the lubricating oil, so that the motor 27 can be effectively cooled. The oil container 4 can be made of a material with good thermal conductivity, such as a metal material.

[0040] As an embodiment 1, refer to Figures 1 to 7 As shown, the intake channel includes a main channel 10 constructed on the cylinder 1, the main channel 10 is connected to the compression chamber 5, and the main channel 10 is also connected to the gas-liquid separator 12 through the main intake pipe 11. The cylinder 1 is also constructed with a first inlet 13 and a first outlet 14 connected to the main channel 10. The oil container 4 is installed in the main channel 10, the oil inlet 8 corresponds to the first inlet 13, and the oil outlet 9 corresponds to the first outlet 14.

[0041] In this embodiment, since the amount of refrigerant sucked into the main channel 10 is large, when the oil container 4 is installed in the main channel 10, the lubricating oil flowing through the oil container 4 can be more fully heat exchanged with the refrigerant flowing through the main channel 10, thereby achieving a better cooling effect on the lubricating oil, and further achieving a better cooling effect of the lubricating oil on the motor 27. Among them, the first inlet 13 is a reserved mounting hole for the oil inlet 8. The oil inlet 8 corresponds to the first inlet 13, and the oil inlet 8 can be directly connected to the first inlet 13, or the oil inlet 8 can pass through the first inlet 13 to communicate with the outside. The first outlet 14 is a reserved mounting hole for the oil outlet 9. The oil outlet 9 corresponds to the first outlet 14, and the oil outlet 9 can be directly connected to the first outlet 14, or the oil outlet 9 can pass through the first outlet 14 to communicate with the outside.

[0042] See also Figures 2 to 7 As shown, the oil passage includes a first oil guide hole 15 constructed in the flange 2 and an oil guide groove 16 constructed on the cylinder 1, the oil guide groove 16 is located on the end surface of the flange 2 facing the cylinder 1, the first inlet 13 is constructed on the end surface of the cylinder 1 facing the flange 2, the end surface of the cylinder 1 facing the flange 2 covers the oil guide groove 16, the oil guide groove 16 is connected to the oil inlet 8, and the oil outlet 7 is connected to the oil guide groove 16 through the first oil guide hole 15.

[0043] In this technical solution, the lubricating oil discharged from the oil outlet 7 of the crankshaft 3 flows through the first oil guide hole 15, the oil guide groove 16, the oil inlet 8 in sequence into the oil container 4, and then is discharged into the bottom oil pool through the oil outlet 9 of the oil container 4. Because the oil guide groove 16 is located on the end surface of the flange 2 facing the cylinder 1, the lubricating oil contacts the end surface of the cylinder 1 facing the flange 2 during the process of flowing through the oil guide groove 16, so that the lubricating oil can cool the cylinder 1. At the same time, the end surface of the cylinder 1 facing the flange 2 covers the oil guide groove 16, so that the lubricating oil flowing through the oil guide groove 16 can enter the oil container 4 as much as possible.

[0044] See also Figure 7 As shown, an exhaust port 29 is formed on the cylinder 1 , and the exhaust port 29 is adjacent to the oil guide groove 16 .

[0045] In this embodiment, since the exhaust port 29 is to discharge high-pressure refrigerant, the surrounding area of ​​the exhaust port 29 is a high-temperature area on the cylinder 1, and when the exhaust port 29 is close to the oil guide groove 16, the lubricating oil flowing through the oil guide groove 16 can be used to specifically cool down the high-temperature area on the cylinder 1. It should be noted that the flange 2 mainly refers to the upper flange of the pump body, and an exhaust valve plate is provided at the position of the exhaust port 29 of the cylinder 1 on the flange 2. When constructing the first oil guide hole 15 and the oil guide groove 16 on the flange 2, the area where the exhaust valve plate is located should be avoided. Among them, the first oil guide hole 15 extends along the radial direction of the flange 2, and the oil guide groove 16 extends along the circumferential direction of the flange 2.

[0046] See also Figure 7 As shown, a sliding vane groove 30 is constructed on the cylinder 1, and the oil guide groove 16 is connected with the oil inlet 8 of the oil container 4 after passing through the sliding vane groove 30.

[0047] In this technical solution, because the oil guide groove 16 passes through the vane groove 30, the lubricating oil flowing through the oil guide groove 16 will also enter the vane groove 30 in an appropriate amount through the small gap between the vane and the vane groove 30, thereby lubricating and cooling the vane.

[0048] As Example 2, see Figures 8 to 13 As shown, the intake channel includes a main channel 10 constructed on the cylinder 1 and a secondary channel 17 constructed on the cylinder 1. The main channel 10 and the secondary channel 17 are both connected to the compression chamber 5. The main channel 10 is also connected to the gas-liquid separator 12 through the main intake pipe 11, and the secondary channel 17 is also connected to the gas-liquid separator 12 through the secondary intake pipe 18. The cylinder 1 is also constructed with a second inlet 19 and a second outlet 20 connected to the secondary channel 17. The oil container 4 is installed in the secondary channel 17, the oil inlet 8 corresponds to the second inlet 19, and the oil outlet 9 corresponds to the second outlet 20.

[0049] In this embodiment, when the cylinder 1 inhales, a large amount of refrigerant enters the compression chamber 5 through the main channel 10, and a small amount of refrigerant enters the compression chamber 5 through the secondary channel 17. Therefore, when the oil container 4 is installed in the secondary channel 17, the lubricating oil can be cooled without substantially affecting the air intake of the cylinder 1, but the cooling effect on the lubricating oil is slightly poor. In the first embodiment, the oil container 4 is installed in the main channel 10. Although the cooling effect on the lubricating oil is better, a large air intake resistance will be formed, thereby affecting the air intake of the cylinder 1. That is, the first embodiment has advantages and disadvantages compared with the second embodiment. Preferably, the secondary channel 17 is connected to the compression chamber 5 through the main channel 10, so that only one opening is reserved on the inner circumferential surface of the cylinder 1 so that the refrigerant flowing through the secondary channel 17 and the main channel 10 can be sucked into the compression chamber 5. The protrusion 21 is also configured with a plug hole 28 connected to the secondary channel 17, and the secondary air intake pipe 18 passes through the plug hole 28 and is connected to the secondary channel 17.

[0050] It should be noted that the second inlet 19 is a reserved installation hole for the oil inlet 8. The oil inlet 8 and the second inlet 19 correspond to each other, and the oil inlet 8 can be directly connected to the second inlet 19, or the oil inlet 8 can pass through the second inlet 19 to communicate with the outside. The second outlet 20 is a reserved installation hole for the oil outlet 9. The oil outlet 9 and the second outlet 20 correspond to each other, and the oil outlet 9 can be directly connected to the second outlet 20, or the oil outlet 9 can pass through the second outlet 20 to communicate with the outside. Of course, the second outlet 20 can also be connected to the first outlet 14, and the oil outlet 9 can eventually discharge the cooled lubricating oil to the bottom oil pool through the first outlet 14.

[0051] See also Fig. 9 and Fig.10 As shown, the cylinder 1 has a protrusion 21 on the side facing the flange 2, the secondary channel 17 is constructed in the protrusion 21, the second inlet 19 and the second outlet 20 are both constructed on the protrusion 21, and an avoidance notch 22 is formed on the flange 2, and the protrusion 21 is located in the avoidance notch 22.

[0052] In this technical solution, by providing a protrusion 21 on the cylinder 1, it is convenient to reconstruct the secondary channel 17 on the cylinder 1. When the protrusion 21 is located on the side of the cylinder 1 facing the flange 2, the lubricating oil discharged from the oil discharge port 7 can be conveniently passed through the oil passage on the flange 2 into the oil container 4. At the same time, an avoidance notch 22 should also be formed on the flange 2 to avoid the protrusion 21.

[0053] See also Figure 8 As shown, the oil passage includes a second oil guide hole 23 constructed on the hole wall of the shaft hole 6, one end of the second oil guide hole 23 is connected to the oil discharge port 7, the other end of the second oil guide hole 23 is connected to the oil pipe 24, and the end of the oil pipe 24 away from the second oil guide hole 23 is connected to the oil inlet 8.

[0054] In this embodiment, the arrangement of the raised portion 21 causes a part of the cylinder 1 to be raised relative to the position of the flange 2. At this time, it is not suitable to directly communicate with the oil container 4 through the oil passage of the flange 2. Therefore, an oil pipe 24 is added to connect the second oil guide hole 23 with the oil container 4. It can be understood that the raised portion 21 causes the position of the part of the cylinder 1 to be raised, and the positions of the oil outlet 7 and the second oil guide hole 23 are also correspondingly raised.

[0055] See also Figure 8 , Figures 11 to 13 As shown, a control valve 25 is provided on the oil passage 24, and the control valve 25 can control whether the oil passage 24 is conductive and the size of the conductive area according to the temperature change in the compressor.

[0056] In this technical solution, by arranging the control valve 25 on the oil pipe 24, the oil pipe 24 can be opened when the temperature in the compressor is high, so that the low-temperature refrigerant during the suction cools the lubricating oil with a high temperature, and the higher the temperature, the larger the conduction area of ​​the oil pipe 24 controlled by the control valve 25, and the more lubricating oil is cooled per unit time. When the temperature in the compressor is low, it indicates that the temperature of the motor 27 is not high. In order to prevent the motor 27 from cooling down, it is not necessary to cool the lubricating oil, so the control valve 25 will control the oil pipe 24 to be closed, thereby increasing the applicability of the device.

[0057] See also Figures 11 to 13 As shown, the oil pipe 24 includes a first pipe section 241 and a second pipe section 242, and the control valve 25 includes a housing 251 and a valve core 252. The housing 251 has a receiving passage, and the housing 251 is configured with a first interface and a second interface communicating with the receiving passage, and the valve core 252 is configured with a communication passage penetrating the valve core 252. One end of the first pipe section 241 is communicated with the second oil guide hole 23, the other end of the first pipe section 241 is communicated with the first interface, one end of the second pipe section 242 is communicated with the second interface, and the other end of the second pipe section 242 is communicated with the oil inlet 8. The valve core 252 is arranged in the receiving passage, and the valve core 252 has a conducting state and a cut-off state. In the conducting state, the two ends of the communication passage are respectively communicated with the first interface and the second interface, and in the cut-off state, the communication passage is not communicated with the first interface and the second interface, and the valve core 252 can switch between the conducting state and the cut-off state according to the temperature change in the compressor.

[0058] In this embodiment, when the temperature in the compressor is high, the motor 27 needs to be effectively cooled down, and the valve core 252 is in a conducting state, so that the connecting channel of the valve core 252 connects the first pipe section 241 and the second pipe section 242, and the lubricating oil discharged from the oil discharge port 7 will flow through the second oil guide hole 23, the first pipe section 241, the connecting channel, and the second pipe section 242 into the oil container 4 in sequence, so that the low-temperature refrigerant during air intake cools the lubricating oil with a higher temperature. When the temperature in the compressor is low, in order to prevent the motor 27 from being cooled down, the valve core 252 is in a cut-off state, so that the connecting channel of the valve core 252 is not connected to the first pipe section 241 and the second pipe section 242, and the lubricating oil will not enter the oil container 4, and the low-temperature refrigerant during air intake will not cool the lubricating oil.

[0059] See also Fig.11 As shown, the shell 251 includes an end wall and a peripheral side wall on the end wall, the end wall and the peripheral side wall enclose a receiving channel, the valve core 252 is slidingly sealed with the receiving channel, there is a distance between the end of the valve core 252 facing the end wall and the end wall, and the space between the end of the valve core 252 facing the end wall and the end wall is filled with gas.

[0060] In this technical solution, since the end of the valve core 252 facing the end wall and the end wall are filled with gas, and the gas is in a sealed state, as the temperature in the compressor increases, the gas expands so that the valve core 252 slides along the accommodating channel under the action of the air pressure difference. In the process of the valve core 252 sliding along the accommodating channel, the valve core 252 will gradually switch from the cut-off state to the conducting state, and as the temperature increases, the area of ​​communication between the communication channel on the valve core 252 and the first pipe section 241 and the second pipe section 242 becomes larger and larger. When the temperature in the compressor decreases, the gas contracts and the valve core 252 slides back along the accommodating channel under the action of the air pressure difference, and the valve core 252 will gradually switch from the conducting state to the cut-off state, thereby realizing that the control valve 25 can control whether the oil pipe 24 is conducting and the size of the conducting area according to the temperature change in the compressor. It should be noted that, when the compressor is applied to the air conditioner, the compressor is connected to the air conditioning system. Therefore, when the temperature in the compressor increases or decreases, the pressure in the compressor does not change much, and the gas sealed between the valve core 252 and the end wall is greatly affected by the thermal expansion and contraction of the temperature. Therefore, the valve core 252 can slide back and forth along the shell 251 under the action of the pressure difference to realize the opening and closing of the control valve 25. Among them, the gas filled between the end of the valve core 252 facing the end wall and the end wall can be a refrigerant, air, nitrogen, etc. It should also be noted that a stop structure can be set in the shell 251, and the stop structure is used to limit the sliding of the valve core 252 to prevent the valve core 252 from sliding out of the shell 251 under the action of gas expansion. At the same time, when the valve core 252 is limited at the stop structure, the communication channel of the valve core 252 is completely connected with the first pipe section 241 and the second pipe section 242, and the conduction area is the largest at this time. Preferably, the opening of the shell 251 faces downward.

[0061] See also Figure 4 and Fig. 9 As shown, at least a partial section of the intake passage extends along the circumferential direction of the cylinder 1 .

[0062] In the prior art, the intake channel usually extends along the radial direction of the cylinder 1, so the intake channel is relatively short. After the intake pipe is inserted into the intake channel, there is not much space left in the intake channel to expand the cross-sectional area to reduce the intake resistance. However, the present application designs the intake channel to have at least a partial section extending along the circumference of the cylinder 1, so that the intake channel can be longer. After the intake pipe is inserted into the intake channel, there is still more space left in the intake channel to expand the cross-sectional area, thereby reducing the intake resistance. It can be understood that when the intake channel only includes the main channel 10, the main channel 10 at least has a partial section extending along the circumference of the cylinder 1; when the intake channel includes both the main channel 10 and the secondary channel 17, both the main channel 10 and the secondary channel 17 have at least a partial section extending along the circumference of the cylinder 1.

[0063] See also Figure 3 and Fig.10 As shown, a groove 26 surrounding the shaft hole 6 is formed on the hole wall of the shaft hole 6 , and the oil discharge port 7 is connected with the oil passage through the groove 26 .

[0064] In this embodiment, since the crankshaft 3 is in a rotating state when the compressor is working, when a groove 26 surrounding the shaft hole 6 is constructed on the hole wall of the shaft hole 6, and the position of the groove 26 corresponds to the position of the oil discharge port 7, even if the crankshaft 3 rotates, the oil discharge port 7 can be ensured to be connected to the oil passage at all times. It can be understood that when the oil passage includes the first oil guide hole 15 and the oil guide groove 16, the oil discharge port 7 is connected to the first oil guide hole 15 through the groove 26; when the oil passage includes the second oil guide hole 23, the oil discharge port 7 is connected to the second oil guide hole 23 through the groove 26.

[0065] As a specific implementation, the flow direction of the lubricating oil when flowing through the oil container 4 is opposite to the flow direction of the refrigerant when flowing through the air intake passage, so that the lubricating oil and the refrigerant can perform countercurrent heat exchange, thereby improving the heat exchange efficiency.

[0066] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A compressor, characterized in that: The invention comprises a cylinder (1), a flange (2), a crankshaft (3) and an oil container (4), wherein the flange (2) is mounted on the cylinder (1), a compression chamber (5) is formed on the cylinder (1), an axial hole (6) is formed on the flange (2), the crankshaft (3) passes through the compression chamber (5) and the axial hole (6), an oil discharge port (7) is constructed on the crankshaft (3), an oil passage is constructed on the flange (2), the oil container (4) has an oil inlet (8) and an oil outlet (9), an air intake channel is constructed on the cylinder (1), the oil container (4) is mounted in the air intake channel, the oil inlet (8) and the oil outlet (9) are both connected to the outside of the cylinder (1), the lubricating oil discharged from the oil discharge port (7) can enter the oil inlet (8) through the oil passage, and the lubricating oil flowing through the oil container (4) can exchange heat with the refrigerant flowing through the air intake channel.

2. The compressor according to claim 1, characterized in that The air intake passage comprises a main passage (10) constructed on the cylinder (1), the main passage (10) being in communication with the compression chamber (5), the main passage (10) also being in communication with a gas-liquid separator (12) via a main air intake pipe (11), the cylinder (1) also being provided with a first inlet (13) and a first outlet (14) in communication with the main passage (10), the oil container (4) being installed in the main passage (10), the oil inlet (8) corresponding to the first inlet (13), and the oil outlet (9) corresponding to the first outlet (14).

3. The compressor according to claim 2, characterized in that The oil passage comprises a first oil guide hole (15) constructed in the flange (2) and an oil guide groove (16) constructed on the cylinder (1); the oil guide groove (16) is located on the end surface of the flange (2) facing the cylinder (1); the first inlet (13) is constructed on the end surface of the cylinder (1) facing the flange (2); the end surface of the cylinder (1) facing the flange (2) covers the oil guide groove (16); the oil guide groove (16) is connected to the oil inlet (8); and the oil outlet (7) is connected to the oil guide groove (16) through the first oil guide hole (15).

4. The compressor according to claim 3, characterized in that The cylinder (1) is provided with an exhaust port (29), the exhaust port (29) being adjacent to the oil guide groove (16); and / or the cylinder (1) is provided with a slide vane groove (30), the oil guide groove (16) passing through the slide vane groove (30).

5. The compressor according to claim 1, characterized in that The air intake passage comprises a main passage (10) constructed on the cylinder (1) and a secondary passage (17) constructed on the cylinder (1); the main passage (10) and the secondary passage (17) are both in communication with the compression chamber (5); the main passage (10) is also in communication with the gas-liquid separator (12) via a main air intake pipe (11); the secondary passage (17) is also in communication with the gas-liquid separator (12) via a secondary air intake pipe (18); a second inlet (19) and a second outlet (20) in communication with the secondary passage (17) are also constructed on the cylinder (1); the oil container (4) is installed in the secondary passage (17); the oil inlet (8) corresponds to the second inlet (19); and the oil outlet (9) corresponds to the second outlet (20).

6. The compressor according to claim 5, characterized in that The cylinder (1) has a protrusion (21) on a side facing the flange (2); the secondary channel (17) is constructed in the protrusion (21); the second inlet (19) and the second outlet (20) are both constructed on the protrusion (21); an avoidance notch (22) is formed on the flange (2); the protrusion (21) is located in the avoidance notch (22); and / or the secondary channel (17) is connected to the compression chamber (5) through the main channel (10).

7. The compressor according to claim 5, characterized in that The oil passage comprises a second oil guide hole (23) constructed on the hole wall of the shaft hole (6), one end of the second oil guide hole (23) is connected to the oil discharge port (7), the other end of the second oil guide hole (23) is connected to an oil passage pipe (24), and the end of the oil passage pipe (24) away from the second oil guide hole (23) is connected to the oil inlet port (8).

8. The compressor according to claim 7, characterized in that The oil passage pipe (24) is provided with a control valve (25), and the control valve (25) can control whether the oil passage pipe (24) is connected and the size of the connection area according to the temperature change in the compressor.

9. The compressor according to claim 8, characterized in that The oil passage pipe (24) comprises a first pipe section (241) and a second pipe section (242); the control valve (25) comprises a housing (251) and a valve core (252); the housing (251) has a receiving passage; the housing (251) is provided with a first interface and a second interface communicating with the receiving passage; the valve core (252) is provided with a communicating passage penetrating the valve core (252); one end of the first pipe section (241) is communicated with the second oil guide hole (23); the other end of the first pipe section (241) is communicated with the first interface; the second One end of the pipe section (242) is connected to the second interface, and the other end of the second pipe section (242) is connected to the oil inlet (8); the valve core (252) is arranged in the accommodating channel, and the valve core (252) has a conducting state and a cut-off state. In the conducting state, the two ends of the connecting channel are respectively connected to the first interface and the second interface, and in the cut-off state, the connecting channel is not connected to the first interface and the second interface. The valve core (252) can switch between the conducting state and the cut-off state according to the temperature change in the compressor.

10. The compressor according to claim 9, characterized in that The shell (251) includes an end wall and a peripheral side wall on the end wall, the end wall and the peripheral side wall enclose the accommodating channel, the valve core (252) is in sliding sealing cooperation with the accommodating channel, there is a distance between one end of the valve core (252) facing the end wall and the end wall, and the space between the one end of the valve core (252) facing the end wall and the end wall is filled with gas.

11. The compressor according to any one of claims 1 to 10, characterized in that The air intake passage has at least a partial section extending along the circumference of the cylinder (1); and / or a groove (26) surrounding the axial hole (6) is formed on the hole wall of the axial hole (6), and the oil discharge port (7) is connected to the oil passage through the groove (26).

12. The compressor according to any one of claims 1 to 10, characterized in that The flow direction of the lubricating oil when flowing through the oil container (4) is opposite to the flow direction of the refrigerant when flowing through the air intake passage.

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