Compressor and equipment

Abstract

Provided are a compressor and equipment that uses the compressor. The compressor includes an oil release mechanism 70 having: a guide member-side discharge oil passage 71, 71A, 71B, 71C; a valve 72, 72A, 72B, 72C; an elastic member 73, 73A, 73B, 73C; and a discharge oil hole 74, 74A, 74B, 74C. When a crankshaft 30 reaches or exceeds a prescribed rotational speed, the valve 72, 72A, 72B, 72C is moved by a centrifugal force and the guide member-side discharge oil passage 71, 71A, 71B, 71C is opened to discharge lubricating oil from the discharge oil hole 74, 74A, 74B, 74C and reduce the amount of lubricating oil guided from a crankshaft oil supply hole 34 to a compression mechanism part 10. By positioning the oil release mechanism 70 radially away from the centerline of the crankshaft 30, the design freedom of the oil release mechanism 70 is increased and the oil release mechanism 70 can be configured such that centrifugal force can be readily applied thereto, thereby preventing an excessive amount of lubricating oil from being supplied to the compressor in a high revolution range.

Description

Compressors and equipment

[0001] The present invention relates to a compressor in which the amount of oil supplied to the compression mechanism increases with increasing crankshaft rotational speed, and to equipment using this compressor.

[0002] In compressors that supply lubricant from the lubrication mechanism to the compression mechanism through an oil supply passage inside the crankshaft as the crankshaft rotates, the amount of lubricant supplied increases with increasing rotational speed. Therefore, an oil release mechanism has been proposed that reduces the amount of lubricant supplied to the compression mechanism by discharging lubricating oil outside the oil supply path when a predetermined rotational speed is reached (for example, Patent Documents 1 to 3).

[0003] International Publication No. 2015 / 104863, Japanese Patent Publication No. 2001-3866, Japanese Patent Publication No. 2000-213480

[0004] However, conventional oil release mechanisms are formed inside or on the outer surface of the crankshaft, and because the radial distance from the center of rotation is small and the degree of freedom is limited, it is difficult to design and construct an oil release mechanism that practically utilizes centrifugal force.

[0005] Therefore, the present invention aims to provide a compressor and equipment using this compressor that can prevent the supply of excessive lubricating oil to the compressor at high rotational speeds by increasing the design freedom of the oil release mechanism by moving the oil release mechanism radially away from the crankshaft axis and making the oil release mechanism more susceptible to centrifugal force.

[0006] The compressor of the present invention as described in claim 1 comprises: a compression mechanism 10 forming a compression chamber 15; an electric mechanism 20 having a stator 21 and a rotor 22 disposed inside the stator 21; a crankshaft 30 that rotates by the electric mechanism 20 to operate the compression mechanism 10; an oil reservoir 4 for storing lubricating oil; a crankshaft oil supply hole 34 formed in the crankshaft 30 for guiding the lubricating oil to the compression mechanism 10; and an oil supply mechanism for supplying the lubricating oil stored in the oil reservoir 4 to the crankshaft oil supply hole 34. A compressor having 5, wherein the amount of oil supplied to the crankshaft oil supply hole 34 increases with increasing rotational speed of the crankshaft 30, wherein the crankshaft 30 has crankshaft-side discharge oil paths 35, 35A, 35B, 35C that communicate with the crankshaft oil supply hole 34, and a guide member 60 is attached to the crankshaft 30 and rotates together with the crankshaft 30, the guide member 60 is equipped with an oil release mechanism 70, and the oil release mechanism 70 is on the crankshaft side Guide member-side discharge oil passages 71, 71A, 71B, 71C that communicate with the discharge oil passages 35, 35A, 35B, 35C; valves 72, 72A, 72B, 72C that open and close the guide member-side discharge oil passages 71, 71A, 71B, 71C; elastic members 73, 73A, 73B, 73C that press the valves 72, 72A, 72B, 72C in the direction that closes the guide member-side discharge oil passages 71, 71A, 71B, 71C; and when the guide member-side discharge oil passages 71, 71A, 71B, 71C are opened by the valves 72, 72A, 72B, 72C... The device has drainage holes 74, 74A, 74B, and 74C for draining the lubricating oil from the guide member side drainage paths 71, 71A, 71B, and 71C. When the crankshaft 30 reaches a predetermined rotational speed or higher, the valves 72, 72A, 72B, and 72C move due to centrifugal force, opening the guide member side drainage paths 71, 71A, 71B, and 71C, and draining the lubricating oil from the drainage holes 74, 74A, 74B, and 74C, thereby reducing the amount of lubricating oil supplied from the crankshaft oil supply hole 34 to the compression mechanism 10.The present invention as described in claim 2 is characterized in that, in the compressor described in claim 1, the guide member 60 is a balance weight. The present invention as described in claim 3 is characterized in that, in the compressor described in claim 2, the rotor 22 is fixed to the crankshaft 30, the balance weight is placed between the compression mechanism 10 and the electric mechanism 20, one end of the discharge pipe 75 passing through the inside of the rotor 22 is connected to the discharge oil holes 74, 74A, 74B, 74C, and the other end of the discharge pipe 75 is located outside the rotor 22. The present invention as described in claim 4 is characterized in that, in the compressor described in claim 1, a crankshaft oil return hole 76 is formed inside the crankshaft 30, and the discharge oil holes 74, 74A, 74B, 74C are connected to the crankshaft oil return hole 76. The present invention as described in claim 5 is a compressor as described in claim 1, wherein the oil release mechanism 70 comprises a first oil release mechanism 70A and a second oil release mechanism 70B, characterized in that the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71B in the second oil release mechanism 70B opens. The present invention as described in claim 6 is a compressor as described in claim 5, characterized in that the distance from the rotation center of the crankshaft 30 to the valve 72A in the first oil release mechanism 70A and the valve 72B in the second oil release mechanism 70B are different. The present invention as described in claim 7 is a compressor as described in claim 5, characterized in that the mass of the valve 72A in the first oil release mechanism 70A and the mass of the valve 72B in the second oil release mechanism 70B are different. The present invention as described in claim 8 is characterized in that, in the compressor described in claim 5, the spring constants of the elastic material 73A in the first oil release mechanism 70A and the elastic material 73B in the second oil release mechanism 70B are different. The apparatus of the present invention as described in claim 9 is an apparatus using the compressor described in any one of claims 1 to 8, characterized in that the compressor, condenser 51, pressure reducing device 52, and evaporator 54 are connected in a ring shape by refrigerant piping 55.

[0007] According to the present invention, by providing a guide member on the crankshaft and equipping the guide member with an oil release mechanism, the degree of design freedom is significantly improved compared to the case where the oil release mechanism is provided inside the crankshaft, and an oil release mechanism that can easily be subjected to centrifugal force can be constructed. Furthermore, this oil release mechanism prevents the supply of excessive lubricating oil to the compressor at high rotational speeds, and when combined with a lubrication mechanism with high lubrication capacity, it is possible to ensure sufficient lubricating oil supply to the compression mechanism at low rotational speeds while preventing the supply of excessive lubricating oil to the compressor at high rotational speeds. Consequently, the operating range of the compressor can be expanded and the amount of lubricating oil discharged from the compressor along with the refrigerant can be reduced, thereby preventing a shortage of lubricating oil in the compressor. In addition, the adhesion of lubricating oil to the condenser, pressure reducing device, evaporator, and refrigerant piping connected to the compressor can be reduced, thus contributing to improved performance and reliability of refrigeration cycle equipment.

[0008] Figure 1 shows a vertical cross-sectional view of a scroll compressor according to one embodiment of the present invention. Figure 1 shows an enlarged cross-sectional view of the main part of the scroll compressor according to this embodiment. Figure 9 shows a vertical cross-sectional view of a scroll compressor according to one embodiment of the present invention. Figure 1 shows an enlarged cross-sectional view of the main part of the scroll compressor according to this embodiment. Figure 9 shows an enlarged cross-sectional view of the main part of the scroll compressor according to another embodiment of the present invention Enlarged cross-sectional view of the main part Enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment of the present invention Enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment of the present invention Enlarged cross-sectional view of the main part of a scroll compressor according to this embodiment shown in Figure 17 Enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment of the present invention rotary compressor according to yet another embodiment of the present invention Enlarged cross-sectional view of the main part of a rotary compressor according to yet another embodiment of the present invention Enlarged view of the main part of a rotary compressor according to yet another embodiment of the

[0009] The compressor according to the first embodiment of the present invention has a crankshaft-side discharge oil passage formed on the crankshaft that communicates with a crankshaft oil supply hole, a guide member attached to the crankshaft and rotating together with the crankshaft, and the guide member is equipped with an oil release mechanism, the oil release mechanism has a guide member-side discharge oil passage that communicates with the crankshaft-side discharge oil passage, a valve that opens and closes the guide member-side discharge oil passage, an elastic material that presses the valve in the direction that closes the guide member-side discharge oil passage, and an oil discharge hole that discharges lubricating oil from the guide member-side discharge oil passage when the guide member-side discharge oil passage is opened by the valve, and when the crankshaft rotates at a predetermined speed or higher, the valve moves due to centrifugal force, the guide member-side discharge oil passage opens, lubricating oil is discharged from the oil discharge hole, and the amount of lubricating oil guided to the compression mechanism from the crankshaft oil supply hole is reduced. According to this embodiment, by providing a guide member on the crankshaft and equipping the guide member with an oil release mechanism, the design flexibility is significantly improved compared to the case where the oil release mechanism is located inside the crankshaft, and centrifugal force can be applied more easily. Furthermore, this oil release mechanism prevents the supply of excessive lubricating oil to the compressor at high rotational speeds. Therefore, when combined with a lubrication mechanism with high lubrication capacity, it is possible to supply sufficient lubricating oil to the compression mechanism at low rotational speeds while preventing the supply of excessive lubricating oil to the compressor at high rotational speeds. Consequently, the operating range of the compressor can be expanded and the amount of lubricating oil discharged from the compressor along with the refrigerant can be reduced, preventing a shortage of lubricating oil in the compressor. In addition, the adhesion of lubricating oil to the condenser, pressure reducing device, evaporator, and refrigerant piping connected to the compressor can be reduced, thus contributing to improved performance and reliability of refrigeration cycle equipment.

[0010] A second embodiment of the present invention is a compressor according to the first embodiment, wherein the guide member is a balance weight. According to this embodiment, the balance weight can be equipped with an oil release mechanism.

[0011] A third embodiment of the present invention is a compressor according to the second embodiment, wherein the rotor is fixed to the crankshaft, a balance weight is placed between the compression mechanism and the electric mechanism, one end of a discharge pipe passing through the inside of the rotor is connected to a discharge oil hole, and the other end of the discharge pipe is located outside the rotor. According to this embodiment, by passing the lubricating oil discharged from the discharge oil hole through the inside of the rotor via the discharge pipe, the lubricating oil is agitated between the compression mechanism and the electric mechanism, and it is possible to prevent the agitated lubricating oil from being discharged from the compressor together with the refrigerant.

[0012] A fourth embodiment of the present invention is a compressor according to the first embodiment, wherein a crankshaft oil return hole is formed in the crankshaft and the discharge oil hole is connected to the crankshaft oil return hole. According to this embodiment, the lubricating oil discharged from the discharge oil hole is passed through the crankshaft via the crankshaft oil return hole, which agitates the lubricating oil discharged from the discharge oil hole, preventing the agitated lubricating oil from being discharged from the compressor together with the refrigerant.

[0013] A fifth embodiment of the present invention is a compressor according to the first embodiment, wherein the oil release mechanism includes a first oil release mechanism and a second oil release mechanism, the first oil release mechanism and the second oil release mechanism are in communication with the crankshaft oil supply hole, and the crankshaft rotation speed at which the guide member side discharge oil path in the first oil release mechanism opens is different from the crankshaft rotation speed at which the guide member side discharge oil path in the second oil release mechanism opens. According to this embodiment, by providing a first oil release mechanism and a second oil release mechanism that open at different rotational speeds, it is possible to suppress the amount of lubricating oil discharged from the discharge oil hole of one oil release mechanism and configure an oil release mechanism that acts in stages, thereby reducing the range of change in the amount of lubricating oil guided from the crankshaft oil supply hole to the compression mechanism and enabling a smooth change in the amount of lubricating oil.

[0014] A sixth embodiment of the present invention is a compressor according to the fifth embodiment, wherein the distance from the crankshaft rotation center to the valve in the first oil release mechanism and the valve in the second oil release mechanism are different. According to this embodiment, by making the distance from the crankshaft rotation center to each valve different, the valves can be opened at different rotational speeds.

[0015] A seventh embodiment of the present invention is a compressor according to the fifth embodiment, wherein the mass of the valve in the first oil release mechanism and the mass of the valve in the second oil release mechanism are different. According to this embodiment, by making the mass of each valve different, the valves can be opened at different rotational speeds.

[0016] An eighth embodiment of the present invention is a compressor according to the fifth embodiment, wherein the spring constants of the elastic material in the first oil release mechanism and the elastic material in the second oil release mechanism are different. According to this embodiment, by making the spring constants of each elastic material different, the valve can be opened at different rotational speeds.

[0017] The apparatus according to the ninth embodiment of the present invention is an apparatus using the compressor described in any of the first to eighth embodiments, wherein the compressor, condenser, pressure reducing device, and evaporator are connected in a ring shape by refrigerant piping. According to this embodiment, the amount of lubricating oil discharged from the compressor together with the refrigerant can be reduced, eliminating lubricating oil shortage in the compressor, and the adhesion of lubricating oil to the condenser, pressure reducing device, evaporator connected to the compressor, and the refrigerant piping connecting them can be reduced.

[0018] A compressor according to one embodiment of the present invention will be described below. However, the present invention is not limited to this embodiment. In the embodiment shown in Figures 1 to 30, a scroll compressor will be used for explanation, and in the embodiment shown in Figures 31 and 32, a rotary compressor will be used for explanation, but a reciprocating compressor or other type of compressor may also be used, and the invention can be applied to horizontally mounted compressors, such as on-board compressors and EV compressors.

[0019] Figure 1 is a longitudinal cross-sectional view of a scroll compressor according to this embodiment. Inside the sealed container 1 are a compression mechanism 10 for compressing a refrigerant, an electric mechanism 20 for driving the compression mechanism 10, and a crankshaft 30 that rotates with the electric mechanism 20 to operate the compression mechanism 10. The sealed container 1 consists of a cylindrical body 1a extending vertically, an upper lid 1c that closes the upper opening of the body 1a, and a lower lid 1b that closes the lower opening of the body 1a. The sealed container 1 is provided with a refrigerant suction pipe 2 for introducing refrigerant into the compression mechanism 10, a refrigerant discharge pipe 3 for discharging the refrigerant compressed by the compression mechanism 10 to the outside of the sealed container 1, and an injection pipe 7 for injecting refrigerant in an intermediate pressure state into the compression mechanism 10. The compression mechanism 10 has a fixed scroll 11 and an orbiting scroll 12. The orbiting scroll 12 is orbitally driven by the crankshaft 30. The electric mechanism 20 comprises a stator 21 fixed to the sealed container 1 and a rotor 22 positioned inside the stator 21. The rotor 22 is shrink-fitted and fixed to the crankshaft 30.

[0020] Below the fixed scroll 11 and the orbiting scroll 12, a main bearing 40 is provided to support the fixed scroll 11 and the orbiting scroll 12. The main bearing 40 has a bearing portion 41 that pivotally supports the main shaft 31 of the crankshaft 30, a boss housing portion 42 for the boss portion 12c which is the orbiting bearing portion of the orbiting scroll 12, a ring-shaped recess 43 for sealing, and a ring-shaped recess 45 for a rotational restraint member. The main bearing 40 is fixed to the sealed container 1 by welding or shrink fitting.

[0021] The fixed scroll 11 comprises a disc-shaped fixed scroll end plate 11a, a fixed spiral wrap 11b erected on the fixed scroll end plate 11a, and an outer peripheral wall portion 11c erected to surround the fixed spiral wrap 11b, with a discharge port 14 formed approximately in the center of the fixed scroll end plate 11a. The orbiting scroll 12 comprises a disc-shaped orbiting scroll end plate 12a, an orbiting spiral wrap 12b erected on the wrap-side end face of the orbiting scroll end plate 12a, and a cylindrical boss portion 12c forming an eccentric bearing formed on the opposite side from the wrap-side end face of the orbiting scroll end plate 12a. The fixed spiral wrap 11b of the fixed scroll 11 and the orbiting spiral wrap 12b of the orbiting scroll 12 mesh with each other, and a plurality of compression chambers 15 are formed between the fixed spiral wrap 11b and the orbiting spiral wrap 12b. The boss portion 12c, which is the bearing portion of the orbiting scroll 12, is formed approximately in the center of the orbiting scroll end plate 12a. The boss portion 12c is housed in the boss housing portion 42.

[0022] The crankshaft 30 has an eccentric shaft 32 located at the uppermost end that is inserted into the boss portion 12c of the orbiting scroll 12, a main shaft 31 positioned in the bearing portion 41 directly below it, a sub-shaft 33 located below it, a pump shaft 30a located at the lower end, and a crankshaft oil supply hole 34 formed inside that extends from the pump shaft 30a at the lower end to the eccentric shaft 32 at the uppermost end.

[0023] The fixed scroll 11 is fixed to the main bearing 40 using multiple bolts 16 at its outer peripheral wall portion 11c. On the other hand, the orbiting scroll 12 is supported by the fixed scroll 11 via a rotational restraint member 17 such as an Oldham ring. The rotational restraint member 17, which restrains the rotation of the orbiting scroll 12, is located in a ring-shaped recess 45 for rotational restraint members and is provided between the fixed scroll 11 and the main bearing 40. As a result, the orbiting scroll 12 performs orbital motion relative to the fixed scroll 11 without rotating on its own axis. The sub-shaft 33 of the crankshaft 30 is pivotally supported by a sub-bearing 18 located at the bottom of the sealed container 1.

[0024] An oil reservoir 4 for storing lubricating oil is formed at the bottom of the sealed container 1. A lubrication mechanism 5 using a positive displacement oil pump is provided near the lowest end of the crankshaft 30. The lubrication mechanism 5 is positioned so that its suction port is located within the oil reservoir 4. The lubrication mechanism 5 is driven by a pump shaft 30a provided on the crankshaft 30 in conjunction with the rotation of the crankshaft 30. The lubrication mechanism 5 can reliably draw up the lubricating oil in the oil reservoir 4 at the bottom of the sealed container 1 in a manner that is almost proportional to the increase in rotation of the crankshaft 30. Therefore, as long as there is enough lubricating oil in the oil reservoir 4 to be drawn up by the lubrication mechanism 5, stable lubrication can be provided to the compression mechanism 10 and the sliding parts between the bearings and shafts that support the crankshaft 30 in the compressor, eliminating concerns about oil depletion. The amount of oil supplied to the crankshaft oil supply hole 34 by the lubrication mechanism 5 increases with the increase in rotational speed of the crankshaft 30. The lubricating oil drawn up by the lubrication mechanism 5 is supplied through the crankshaft oil supply hole 34 formed inside the crankshaft 30 to the sliding part between the sub-shaft 33 and the sub-bearing 18, the sliding part between the main shaft 31 and the bearing part 41 of the main bearing 40, and the boss part 12c that supports the eccentric shaft 32. The lubricating oil supplied to the boss part 12c is then guided to the compression mechanism 10.

[0025] A guide member 60 is provided on the crankshaft 30. The guide member 60 is attached to the crankshaft 30 and rotates together with the crankshaft 30. The guide member 60 is equipped with an oil release mechanism 70. The guide member 60 is positioned downstream of the lubrication mechanism 5 and upstream of the compression mechanism 10. In Figure 1, the guide member 60 is provided between the sub-bearing 18 and the electric motor mechanism 20.

[0026] The refrigerant drawn in from the refrigerant intake pipe 2 is guided from the intake port 15a to the compression chamber 15. The compression chamber 15 moves from the outer periphery towards the center, reducing its volume as it moves. The refrigerant that reaches a predetermined pressure in the compression chamber 15 is discharged from the discharge port 14 located in the center of the fixed scroll 11 to the discharge chamber 6. The discharge port 14 is provided with a discharge valve (not shown). The refrigerant that reaches a predetermined pressure in the compression chamber 15 pushes open the discharge valve and is discharged into the discharge chamber 6. The refrigerant discharged into the discharge chamber 6 is led out to the upper part of the sealed container 1, passes through a refrigerant passage (not shown) formed in the compression mechanism 10, reaches the area around the electric mechanism 20, and is discharged from the refrigerant discharge pipe 3.

[0027] In this embodiment of the scroll compressor, the boss housing 42 is a high-pressure region, and the outer circumference of the orbiting scroll 12, where the rotational restraint member 17 is located, is an intermediate-pressure region separated by a sealing member (not shown). The pressures in the high-pressure and intermediate-pressure regions optimally press the orbiting scroll 12 against the fixed scroll 11 so that it can slide. The eccentric shaft 32 is inserted into the boss portion 12c, which is the bearing portion, so as to be rotatably driven while eccentric. An oil groove 38 is formed on the outer circumference of the eccentric shaft 32. The sealing ring-shaped recess 43 is formed on the thrust surface of the main bearing 40, which receives the thrust force of the orbiting scroll end plate 12a. A ring-shaped sealing member is provided in the sealing ring-shaped recess 43. The sealing member is arranged on the outer circumference of the boss housing 42. The sealed container 1 is filled with refrigerant at the same high pressure as the refrigerant discharged into the discharge chamber 6, and since the crankshaft oil supply hole 34 opens at the upper end of the eccentric shaft 32, the pressure inside the boss portion 12c becomes a high-pressure region equivalent to the pressure of the discharged refrigerant. Lubricating oil introduced into the boss portion 12c through the crankshaft oil supply hole 34 is supplied to the inner circumferential surface of the boss portion 12c and the boss housing portion 42, which are bearing portions, by oil grooves 38 formed on the outer circumferential surface of the eccentric shaft 32. Since a sealing member is provided on the outer circumferential surface of the boss housing portion 42, the boss housing portion 42 is a high-pressure region. The lubricating oil supplied to the boss housing portion 42 is guided to the orbiting scroll end plate 12a, the rotational restraining member 17, and the compression chamber 15.

[0028] In this embodiment, the compressor comprises a condenser 51, a pressure reducing device 52, a gas-liquid separator 53, and an evaporator 54, all connected in a ring shape by refrigerant piping 55. The condenser 51 condenses the refrigerant discharged from the refrigerant discharge pipe 3. The pressure reducing device 52 reduces the pressure of the refrigerant condensed in the condenser 51. The evaporator 54 evaporates the refrigerant reduced in pressure by the pressure reducing device 52. The refrigerant evaporated in the evaporator 54 is returned to the compression mechanism 10 by the refrigerant suction pipe 2. The gas-liquid separator 53 separates the refrigerant condensed in the condenser 51 and reduced in pressure by the pressure reducing device 52 into gaseous refrigerant and liquid refrigerant. The liquid refrigerant further passes through the pressure reducing device 52 and is led to the evaporator 54 as low-pressure refrigerant. Meanwhile, the gaseous refrigerant passes through the injection pipe 7 and is led to the compression chamber 15, which is in an intermediate pressure state.

[0029] Figure 2 is an enlarged cross-sectional view of the main part of the scroll compressor according to this embodiment shown in Figure 1, where Figure 2(a) is a cross-sectional view showing the guide member, and Figures 2(b) and 2(c) are longitudinal cross-sectional views showing the same guide member.

[0030] As shown in Figure 2(a), the guide member 60 is a ring-shaped component divided into two radial sections and is fixed to the crankshaft 30 by fasteners 61. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has a crankshaft-side discharge oil passage 35 that communicates with the crankshaft oil supply hole 34. The oil release mechanism 70 includes a guide member-side discharge oil passage 71 that communicates with the crankshaft-side discharge oil passage 35, a valve 72 that opens and closes the guide member-side discharge oil passage 71, an elastic material 73 that presses the valve 72 in the direction of closing the guide member-side discharge oil passage 71, and a discharge oil hole 74 that discharges lubricating oil from the guide member-side discharge oil passage 71 when the guide member-side discharge oil passage 71 is opened by the valve 72. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71.

[0031] In this embodiment, the valve 72 has a mass m １ A sphere weighing [kg] is used, and the elastic material 73 has a spring constant k １A coil spring of [N / m] is used. Further, the valve 72 made of a sphere is arranged such that the distance from the rotation center of the crankshaft 30 to the center of gravity position of the valve 72 is r １ [m]. Fig. 2(b) shows the state of the oil release mechanism 70 when the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ [s -１ less than, and Fig. 2(c) shows the state of the oil release mechanism 70 when the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ or more. As shown in Fig. 2(b), when the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ less than, the guide member side oil discharge passage 71 is blocked by the valve 72. Further, as shown in Fig. 2(c), when the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ or more, the guide member side oil discharge passage 71 is opened, and the guide member side oil discharge passage 71 communicates with the oil discharge hole 74. Thus, when the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ or more, the guide member side oil discharge passage 71 is opened by the valve 72, and lubricating oil is discharged from the oil discharge hole 74. Therefore, the amount of lubricating oil guided from the crankshaft oil supply hole 34 to the compression mechanism portion 10 decreases.

[0032] Incidentally, when the spring deflection amount of the elastic member 73 is X １ [m], and the force from the lubricating oil in the crankshaft oil supply hole 34 (such as the oil pressure by the oil supply mechanism 5 and the centrifugal force acting on the lubricating oil in the crankshaft oil supply hole 34 and the guide member side oil discharge passage 71, and the following description is omitted) is α [N], the valve 72 operates under the following conditions, and the guide member side oil discharge passage 71 is opened. m １ r １ (2πn ｃ１ )2 + α > k １ X １ When the guide member side oil discharge passage 71 is opened, a part of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74 through the crankshaft side oil discharge passage 35 and the guide member side oil discharge passage 71.

[0033] Figure 3 is an enlarged cross-sectional view of the main part of a scroll compressor according to another embodiment, where Figure 3(a) is a cross-sectional view showing a guide member, and Figures 3(b), 3(c), and 3(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 3 corresponds to Figure 2, and the scroll compressor according to the embodiment shown in Figure 3 is based on the configuration shown in Figure 1. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A and a second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71B in the second oil release mechanism 70B opens.

[0034] As shown in Figure 3(a), the guide member 60 is a ring shape divided into two radial sections and is fixed to the crankshaft 30 by fasteners 61. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35A and the guide member-side oil discharge path 71A. The second oil release mechanism 70B includes a guide member-side oil discharge path 71B that communicates with the crankshaft-side oil discharge path 35B, a valve 72B that opens and closes the guide member-side oil discharge path 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member-side oil discharge path 71B, and an oil discharge hole 74B that discharges lubricating oil from the guide member-side oil discharge path 71B when the guide member-side oil discharge path 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35B and the guide member-side oil discharge path 71B.

[0035] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r ２ It is positioned at the location [m]. Note that the distance r １ > Distance r ２ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ That is the case.

[0036] Figure 3(b) shows the crankshaft 30 rotating at a predetermined rotational speed n ｃ１ [s -１ Figure 3(c) shows the state of the oil release mechanism 70 when the value is less than n. ｃ１ The above will result in a predetermined rotational speed n ｃ２ Figure 3(d) shows the state of the oil release mechanism 70 when the value is less than n. ｃ２ This shows the state of the oil release mechanism 70 when the above conditions are met. As shown in Figure 3(b), when the crankshaft 30 is at a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side discharge oil passage 71A is closed by valve 72A, and the guide member side discharge oil passage 71B is closed by valve 72B. Also, as shown in Figure 3(c), when the crankshaft 30 is at a predetermined rotational speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A opens and communicates with the discharge oil hole 74A. However, the guide member side discharge oil passage 71B is closed by the valve 72B. Also, as shown in Figure 3(d), when the crankshaft 30 is at a predetermined rotational speed n ｃ２ In the above cases, the guide member side oil discharge path 71A opens and communicates with the oil discharge hole 74A, and the guide member side oil discharge path 71B opens and communicates with the oil discharge hole 74B.

[0037] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２If the value is less than n, the valve 72A opens the guide member side discharge oil passage 71A, and lubricating oil is discharged from the discharge oil hole 74. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ In the above case, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74. In addition, the guide member side discharge oil passage 71B is opened by valve 72B, and lubricating oil is discharged from the discharge oil hole 74B. Consequently, the amount of lubricating oil guided from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0038] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35A and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r ２ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35B and the guide member-side oil discharge path 71B.

[0039] Figure 4 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 4(a) is a cross-sectional view showing a guide member, and Figures 4(b), 4(c), and 4(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 4 corresponds to Figure 2, and the scroll compressor according to the embodiment shown in Figure 4 is based on the configuration shown in Figure 1. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A and a second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71B in the second oil release mechanism 70B opens.

[0040] As shown in Figure 4(a), the guide member 60 is a ring shape divided into two radial sections and is fixed to the crankshaft 30 by fasteners 61. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction that closes the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35A and the guide member-side oil discharge path 71A. The second oil release mechanism 70B includes a guide member-side oil discharge path 71B that communicates with the crankshaft-side oil discharge path 35B, a valve 72B that opens and closes the guide member-side oil discharge path 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member-side oil discharge path 71B, and an oil discharge hole 74B that discharges lubricating oil from the guide member-side oil discharge path 71B when the guide member-side oil discharge path 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35B and the guide member-side oil discharge path 71B.

[0041] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m ２ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １ It is positioned at the location [m]. Note that the mass m １ >Mass m ２ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ That is the case.

[0042] Figure 4(b) shows the crankshaft 30 rotating at a predetermined rotational speed n ｃ１ [s -１ Figure 4(c) shows the state of the oil release mechanism 70 when the value is less than ], and the crankshaft 30 is rotating at a predetermined rotational speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ Figure 4(d) shows the state of the oil release mechanism 70 when the value is less than n. ｃ２ This shows the state of the oil release mechanism 70 when the above conditions are met. As shown in Figure 4(b), when the crankshaft 30 is at a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side discharge oil passage 71A is closed by valve 72A, and the guide member side discharge oil passage 71B is closed by valve 72B. Also, as shown in Figure 4(c), when the crankshaft 30 is at a predetermined rotational speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member-side oil discharge path 71A opens and communicates with the oil discharge hole 74A. However, the guide member-side oil discharge path 71B is closed by the valve 72B. Also, as shown in Figure 4(d), when the crankshaft 30 is at a predetermined rotational speed n ｃ２ In the above cases, the guide member side oil discharge path 71A opens and communicates with the oil discharge hole 74A, and the guide member side oil discharge path 71B opens and communicates with the oil discharge hole 74B.

[0043] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２If the value is less than n, the valve 72A opens the guide member side discharge oil passage 71A, and lubricating oil is discharged from the discharge oil hole 74. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ In the above case, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74. In addition, the guide member side discharge oil passage 71B is opened by valve 72B, and lubricating oil is discharged from the discharge oil hole 74B. Consequently, the amount of lubricating oil guided from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0044] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. ２ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B.

[0045] Figure 5 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 5(a) is a cross-sectional view showing a guide member, and Figures 5(b), 5(c), and 5(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 5 corresponds to Figure 2, and the scroll compressor according to the embodiment shown in Figure 5 is based on the configuration shown in Figure 1. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A and a second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71B in the second oil release mechanism 70B opens.

[0046] As shown in Figure 5(a), the guide member 60 is a ring shape divided into two radial sections and is fixed to the crankshaft 30 by fasteners 61. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35A and the guide member-side oil discharge path 71A. The second oil release mechanism 70B includes a guide member-side oil discharge path 71B that communicates with the crankshaft-side oil discharge path 35B, a valve 72B that opens and closes the guide member-side oil discharge path 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member-side oil discharge path 71B, and an oil discharge hole 74B that discharges lubricating oil from the guide member-side oil discharge path 71B when the guide member-side oil discharge path 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35B and the guide member-side oil discharge path 71B.

[0047] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k ２It uses a coil spring with a spring constant of [[N / m]]. Also, the valve 72B made of a sphere is arranged such that the distance from the rotation center of the crankshaft 30 to the center of gravity position of the valve 72B is r １ [m]. Note that the spring constant k １ < the spring constant k ２ is set as such.

[0048] Fig. 5(b) shows the state of the oil release mechanism 70 when the crankshaft 30 rotates at a rotational speed n ｃ１ [s -１ < less than, Fig. 5(c) shows the state of the oil release mechanism 70 when the crankshaft 30 rotates at a rotational speed n ｃ１ or more and less than a predetermined rotational speed n ｃ２ , and Fig. 5(d) shows the state of the oil release mechanism 70 when the crankshaft 30 rotates at a rotational speed n ｃ２ or more. As shown in Fig. 5(b), when the crankshaft 30 rotates at a rotational speed n ｃ１ less than, the guide member side oil discharge path 71A is blocked by the valve 72A, and the guide member side oil discharge path 71B is blocked by the valve 72B. Also, as shown in Fig. 5(c), when the crankshaft 30 rotates at a rotational speed n ｃ１ or more and less than a predetermined rotational speed n ｃ２ , the guide member side oil discharge path 71A is open and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. However, the guide member side oil discharge path 71B is blocked by the valve 72B. Also, as shown in Fig. 5(d), when the crankshaft 30 rotates at a rotational speed n ｃ２ or more, the guide member side oil discharge path 71A is open, the guide member side oil discharge path 71A communicates with the oil discharge hole 74A, the guide member side oil discharge path 71B is open, and the guide member side oil discharge path 71B communicates with the oil discharge hole 74B.

[0049] Thus, when the crankshaft 30 rotates at a rotational speed n ｃ１ or more and less than a predetermined rotational speed n ｃ２If the value is less than n, the valve 72A opens the guide member side discharge oil passage 71A, and lubricating oil is discharged from the discharge oil hole 74. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ In the above case, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74. In addition, the guide member side discharge oil passage 71B is opened by valve 72B, and lubricating oil is discharged from the discharge oil hole 74B. Consequently, the amount of lubricating oil guided from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0050] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r １ (2πn ｃ１ ) 2 + α > k ２ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B.

[0051] Figure 6 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 6(a) is a cross-sectional view showing a guide member, and Figures 6(b), 6(c), and 6(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 6 corresponds to Figure 2, and the scroll compressor according to the embodiment shown in Figure 6 is based on the configuration shown in Figure 1. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A, a second oil release mechanism 70B, and a third oil release mechanism 70C, wherein the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71A opens in the first oil release mechanism 70A, the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71B opens in the second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71C opens in the third oil release mechanism 70C are different.

[0052] As shown in Figure 6(a), the guide member 60 is a ring shape divided into three radial sections and is fixed to the crankshaft 30 by fasteners 61. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A, 35B, and 35C that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction that closes the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35A and the guide member-side oil discharge path 71A. The second oil release mechanism 70B includes a guide member-side oil discharge path 71B that communicates with the crankshaft-side oil discharge path 35B, a valve 72B that opens and closes the guide member-side oil discharge path 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member-side oil discharge path 71B, and an oil discharge hole 74B that discharges lubricating oil from the guide member-side oil discharge path 71B when the guide member-side oil discharge path 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35B and the guide member-side oil discharge path 71B. The third oil release mechanism 70C includes a guide member side oil discharge path 71C that communicates with the crankshaft side oil discharge path 35C, a valve 72C that opens and closes the guide member side oil discharge path 71C, an elastic material 73C that presses the valve 72C in the direction that closes the guide member side oil discharge path 71C, and an oil discharge hole 74C that discharges lubricating oil from the guide member side oil discharge path 71C when the guide member side oil discharge path 71C is opened by the valve 72C. A sealing member 62 is provided around the connection between the crankshaft side oil discharge path 35C and the guide member side oil discharge path 71C.

[0053] In this embodiment, the valve 72A has a mass m １A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r ２ It is positioned at the position [m]. Also, the valve 72C has mass m １ A sphere weighing [kg] is used, and the elastic material 73C has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72C is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72C is r ３ It is positioned at the location [m]. Note that the distance r １ > Distance r ２ > Distance r ３ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ <Predetermined rotational speed n> ｃ７３ That is the case.

[0054] Figure 6(b) shows the state of the first oil release mechanism 70A. As shown in Figure 6(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 6(c) shows the state of the second oil release mechanism 70B. As shown in Figure 6(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２With the above steps, the guide member side oil discharge path 71B is opened, and the guide member side oil discharge path 71B communicates with the oil discharge hole 74B. Figure 6(d) shows the state of the third oil release mechanism 70C. As shown in Figure 6(d), the third oil release mechanism 70C is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ３ If the value is less than the predetermined rotational speed n, the guide member side discharge oil passage 71C is closed by the valve 72C, and 30 is set to a predetermined rotational speed n ｃ３ With the above steps completed, the guide member-side oil discharge path 71C opens and communicates with the oil discharge hole 74C.

[0055] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ The above will result in a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. Also, when the crankshaft 30 is at a predetermined rotational speed n ｃ３ In the above cases, the guide member side discharge oil passage 71A is opened by valve 72A, the guide member side discharge oil passage 71B is opened by valve 72B, and furthermore, the guide member side discharge oil passage 71C is opened by valve 72C. Therefore, lubricating oil is discharged from the discharge holes 74A, 74B, and 74C. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0056] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X１ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r ２ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B. Also, the amount of spring deflection of the elastic material 73C is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72C operates and the guide member side discharge oil passage 71C opens. １ r ３ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side discharge oil passage 71C opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74C through the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71C.

[0057] Figure 7 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 7(a) is a cross-sectional view showing a guide member, and Figures 7(b), 7(c), and 7(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 7 corresponds to Figure 2, and the scroll compressor according to the embodiment shown in Figure 7 is based on the configuration shown in Figure 1. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A, a second oil release mechanism 70B, and a third oil release mechanism 70C, wherein the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71B in the second oil release mechanism 70B opens, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71C in the third oil release mechanism 70C opens.

[0058] As shown in Figure 7(a), the guide member 60 is a ring shape divided into three radial sections and is fixed to the crankshaft 30 by fasteners 61. An oil supply hole 34 is formed at the rotation center of the crankshaft 30. The 30 also has crankshaft-side discharge oil passages 35A, 35B, and 35C that communicate with the oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction that closes the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35A and the guide member-side oil discharge path 71A. The second oil release mechanism 70B includes a guide member-side oil discharge path 71B that communicates with the crankshaft-side oil discharge path 35B, a valve 72B that opens and closes the guide member-side oil discharge path 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member-side oil discharge path 71B, and an oil discharge hole 74B that discharges lubricating oil from the guide member-side oil discharge path 71B when the guide member-side oil discharge path 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35B and the guide member-side oil discharge path 71B. The third oil release mechanism 70C includes a guide member side oil discharge path 71C that communicates with the crankshaft side oil discharge path 35C, a valve 72C that opens and closes the guide member side oil discharge path 71C, an elastic material 73C that presses the valve 72C in the direction that closes the guide member side oil discharge path 71C, and an oil discharge hole 74C that discharges lubricating oil from the guide member side oil discharge path 71C when the guide member side oil discharge path 71C is opened by the valve 72C. A sealing member 62 is provided around the connection between the crankshaft side oil discharge path 35C and the guide member side oil discharge path 71C.

[0059] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m ２ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １ It is positioned at the position [m]. Also, the valve 72C has mass m ３ A sphere weighing [kg] is used, and the elastic material 73C has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72C is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72C is r １ It is positioned at the location [m]. Note that the mass m １ >Mass m ２ >Mass m ３ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ <Predetermined rotational speed n> ｃ３ That is the case.

[0060] Figure 7(b) shows the state of the first oil release mechanism 70A. As shown in Figure 7(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 7(c) shows the state of the second oil release mechanism 70B. As shown in Figure 7(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２With the above steps, the guide member side oil discharge path 71B is opened, and in addition, the guide member side oil discharge path 71B communicates with the oil discharge hole 74B. Figure 7(d) shows the state of the third oil release mechanism 70C. As shown in Figure 7(d), the third oil release mechanism 70C is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71C is closed by the valve 72C, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ３ With the above steps completed, the guide member-side oil discharge path 71C opens and communicates with the oil discharge hole 74C.

[0061] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ The above will result in a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. Also, when the crankshaft 30 is at a predetermined rotational speed n ｃ３ In the above cases, the guide member side discharge oil passage 71A is opened by valve 72A, the guide member side discharge oil passage 71B is opened by valve 72B, and furthermore, the guide member side discharge oil passage 71C is opened by valve 72C. Therefore, lubricating oil is discharged from the discharge holes 74A, 74B, and 74C. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0062] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k１ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. ２ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B. Also, the amount of spring deflection of the elastic material 73C is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72C operates and the guide member side discharge oil passage 71C opens. ３ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side discharge oil passage 71C opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74C through the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71C.

[0063] Figure 8 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 8(a) is a cross-sectional view showing a guide member, and Figures 8(b), 8(c), and 8(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 8 corresponds to Figure 2, and the scroll compressor according to the embodiment shown in Figure 8 is based on the configuration shown in Figure 1. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A, a second oil release mechanism 70B, and a third oil release mechanism 70C, wherein the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71A opens in the first oil release mechanism 70A, the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71B opens in the second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71C opens in the third oil release mechanism 70C are different.

[0064] As shown in Figure 8(a), the guide member 60 is a ring shape divided into three radial sections and is fixed to the crankshaft 30 by fasteners 61. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction that closes the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35A and the guide member-side oil discharge path 71A. The second oil release mechanism 70B includes a guide member-side oil discharge path 71B that communicates with the crankshaft-side oil discharge path 35B, a valve 72B that opens and closes the guide member-side oil discharge path 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member-side oil discharge path 71B, and an oil discharge hole 74B that discharges lubricating oil from the guide member-side oil discharge path 71B when the guide member-side oil discharge path 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft-side oil discharge path 35B and the guide member-side oil discharge path 71B. The third oil release mechanism 70C includes a guide member side oil discharge path 71C that communicates with the crankshaft side oil discharge path 35C, a valve 72C that opens and closes the guide member side oil discharge path 71C, an elastic material 73C that presses the valve 72C in the direction that closes the guide member side oil discharge path 71C, and an oil discharge hole 74C that discharges lubricating oil from the guide member side oil discharge path 71C when the guide member side oil discharge path 71C is opened by the valve 72C. A sealing member 62 is provided around the connection between the crankshaft side oil discharge path 35C and the guide member side oil discharge path 71C.

[0065] In this embodiment, the valve 72A has a mass m １A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k ２ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １ It is positioned at the position [m]. Also, the valve 72C has mass m １ A sphere weighing [kg] is used, and the elastic material 73C has a spring constant k ３ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72C is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72C is r １ It is positioned at the [m] position. The spring constant k is also present. １ > Spring constant k ２ > Spring constant k ３ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ <Predetermined rotational speed n> ｃ３ That is the case.

[0066] Figure 8(b) shows the state of the first oil release mechanism 70A. As shown in Figure 8(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 8(c) shows the state of the second oil release mechanism 70B. As shown in Figure 8(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２With the above steps, the guide member side oil discharge path 71B is opened, and the guide member side oil discharge path 71B communicates with the oil discharge hole 74B. Figure 8(d) shows the state of the third oil release mechanism 70C. As shown in Figure 8(d), the third oil release mechanism 70C is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71C is closed by the valve 72C, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ３ With the above steps completed, the guide member-side oil discharge path 71C opens and communicates with the oil discharge hole 74C.

[0067] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ The above will result in a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. Also, when the crankshaft 30 is at a predetermined rotational speed n ｃ３ In the above cases, the guide member side discharge oil passage 71A is opened by valve 72A, the guide member side discharge oil passage 71B is opened by valve 72B, and furthermore, the guide member side discharge oil passage 71C is opened by valve 72C. Therefore, lubricating oil is discharged from the discharge holes 74A, 74B, and 74C. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0068] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k１ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r １ (2πn ｃ１ ) 2 + α > k ２ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B. Also, the amount of spring deflection of the elastic material 73C is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72C operates and the guide member side discharge oil passage 71C opens. １ r １ (2πn ｃ１ ) 2 + α > k ３ X １ When the guide member-side discharge oil passage 71C opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74C through the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71C.

[0069] Figure 9 is a longitudinal cross-sectional view of a scroll compressor according to yet another embodiment of the present invention. In the following description, only configurations different from those in Figure 1 will be described, and components identical to those in Figure 1 will be denoted by the same reference numerals and their descriptions will be omitted. In the scroll compressor according to this embodiment, the guide member 60 is used as a balance weight. As shown in Figure 9, the oil release mechanism 70 can be provided on this balance weight. In Figure 9, the guide member 60, which is the balance weight, is positioned between the electric motor unit 20 and the compression mechanism unit 10.

[0070] Figure 10 is an enlarged cross-sectional view of the main part of the scroll compressor according to this embodiment shown in Figure 9, where Figure 10(a) is a cross-sectional view showing the guide member, and Figures 10(b) and 10(c) are longitudinal cross-sectional views showing the same guide member.

[0071] As shown in Figure 10(a), the guide member 60 is a balance weight and is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has a crankshaft-side discharge oil passage 35 that communicates with the crankshaft oil supply hole 34. The oil release mechanism 70 has a guide member-side discharge oil passage 71 that communicates with the crankshaft-side discharge oil passage 35, a valve 72 that opens and closes the guide member-side discharge oil passage 71, an elastic material 73 that presses the valve 72 in the direction of closing the guide member-side discharge oil passage 71, and a discharge oil hole 74 that discharges lubricating oil from the guide member-side discharge oil passage 71 when the guide member-side discharge oil passage 71 is opened by the valve 72. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71.

[0072] In this embodiment, the valve 72 has a mass m １ A sphere weighing [kg] is used, and the elastic material 73 has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72 is positioned such that the distance from the rotational center of the crankshaft 30 to the center of gravity of the valve 72 is r １ It is positioned at position [m]. Figure 10(b) shows the crankshaft 30 rotating at a predetermined rotational speed n ｃ１ [s -１ Figure 10(c) shows the state of the oil release mechanism 70 when the value is less than n. ｃ１ This shows the state of the oil release mechanism 70 when the above conditions are met. As shown in Figure 10(b), when the crankshaft 30 is at a predetermined rotational speed n ｃ１ If it is less than n, the guide member side discharge oil passage 71 is closed by the valve 72. Also, as shown in Figure 10(c), when the crankshaft 30 is at a predetermined rotational speed n ｃ１In the above case, the guide member side oil discharge path 71 opens and communicates with the oil discharge hole 74. In this way, when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ When this occurs, the valve 72 opens the guide member-side oil discharge path 71, and lubricating oil is discharged from the oil discharge hole 74. Consequently, the amount of lubricating oil supplied from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases.

[0073] Furthermore, the amount of spring deflection of the elastic material 73 is X. １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72 operates and the guide member side discharge oil passage 71 opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71 opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74 through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71.

[0074] Figure 11 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 11(a) is a cross-sectional view showing a guide member, and Figures 11(b) and 11(c) are longitudinal cross-sectional views showing the same guide member. Note that Figure 11 corresponds to Figure 10, and the scroll compressor according to the embodiment shown in Figure 11 is based on the configuration shown in Figure 9. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A and a second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side oil discharge path 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side oil discharge path 71B in the second oil release mechanism 70B opens.

[0075] As shown in Figure 11(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B.

[0076] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r ２It is positioned at the location [m]. Note that the distance r １ > Distance r ２ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ That is the case.

[0077] Figure 11(b) shows the state of the first oil release mechanism 70A. As shown in Figure 11(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 11(c) shows the state of the second oil release mechanism 70B. As shown in Figure 11(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２ With the above steps completed, the guide member-side oil discharge path 71B opens and communicates with the oil discharge hole 74B.

[0078] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ In the above case, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0079] Furthermore, the amount of spring deflection of the elastic material 73A is X １[m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r ２ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B.

[0080] Figure 12 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 12(a) is a cross-sectional view showing a guide member, and Figures 12(b) and 12(c) are longitudinal cross-sectional views showing the same guide member. Note that Figure 12 corresponds to Figure 10, and the scroll compressor according to the embodiment shown in Figure 12 is based on the configuration shown in Figure 9. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A and a second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side oil discharge path 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side oil discharge path 71B in the second oil release mechanism 70B opens.

[0081] As shown in Figure 12(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B.

[0082] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m ２ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １It is positioned at the location [m]. Note that the mass m １ >Mass m ２ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ That is the case.

[0083] Figure 12(b) shows the state of the first oil release mechanism 70A. As shown in Figure 12(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 12(c) shows the state of the second oil release mechanism 70B. As shown in Figure 12(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２ With the above steps completed, the guide member-side oil discharge path 71B opens and communicates with the oil discharge hole 74B.

[0084] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ In the above case, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0085] Furthermore, the amount of spring deflection of the elastic material 73A is X １When the force from the lubricating oil in the crankshaft oil supply hole 34 is α [N], the valve 72A operates under the following conditions, and the guide member side oil discharge passage 71A becomes open. m １ r １ (2πn ｃ１ )2 + α > k １ X １ When the guide member side oil discharge passage 71A becomes open, a part of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft side oil discharge passage 35 and the guide member side oil discharge passage 71A. Also, the spring deflection amount of the elastic member 73B is X １ When the force from the lubricating oil in the crankshaft oil supply hole 34 is α [N], the valve 72B operates under the following conditions, and the guide member side oil discharge passage 71B becomes open. m ２ r １ (2πn ｃ１ )2 + α > k １ X １ When the guide member side oil discharge passage 71B becomes open, a part of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft side oil discharge passage 35 and the guide member side oil discharge passage 71B.

[0086] Fig. 13 is a further enlarged cross-sectional view of the main part of a scroll compressor according to another embodiment. Fig. 13(a) is a cross-sectional view showing the guide member, and Figs. 13(b) and 13(c) are longitudinal sectional views showing the same guide member. Note that Fig. 13 corresponds to Fig. 10, and the scroll compressor according to the embodiment shown in Fig. 13 is based on the configuration shown in Fig. 9. In the present embodiment, as the oil release mechanism 70, it has a first oil release mechanism 70A and a second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side oil discharge passage 71A in the first oil release mechanism 70A becomes open is different from the rotational speed of the crankshaft 30 at which the guide member side oil discharge passage 71B in the second oil release mechanism 70B becomes open.

[0087] As shown in Figure 13(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B.

[0088] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k ２ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １It is arranged so as to be at the position of [m]. The spring constant k １ > spring constant k ２ is set as, and the predetermined rotational speed n ｃ１ < predetermined rotational speed n ｃ２ is as follows.

[0089] Fig. 13(b) shows the state of the first oil release mechanism 70A. As shown in Fig. 13(b), when the crankshaft 30 rotates at a speed lower than the predetermined rotational speed n ｃ１ , the guide member side oil discharge passage 71A is blocked by the valve 72A. When the crankshaft 30 rotates at a speed equal to or higher than the predetermined rotational speed n ｃ１ , the guide member side oil discharge passage 71A opens and the guide member side oil discharge passage 71A communicates with the oil discharge hole 74A. Fig. 13(c) shows the state of the second oil release mechanism 70B. As shown in Fig. 13(c), when the crankshaft 30 rotates at a speed lower than the predetermined rotational speed n ｃ２ , the guide member side oil discharge passage 71B is blocked by the valve 72B. When the crankshaft 30 rotates at a speed equal to or higher than the predetermined rotational speed n ｃ２ , the guide member side oil discharge passage 71B opens and the guide member side oil discharge passage 71B communicates with the oil discharge hole 74B.

[0090] Thus, when the crankshaft 30 rotates at a speed equal to or higher than the predetermined rotational speed n ｃ１ and lower than the predetermined rotational speed n ｃ２ , the guide member side oil discharge passage 71A is opened by the valve 72A and lubricating oil is discharged from the oil discharge hole 74A. Also, when the crankshaft 30 rotates at a speed equal to or higher than the predetermined rotational speed n ｃ２ , the guide member side oil discharge passage 71A is opened by the valve 72A, and in addition, the guide member side oil discharge passage 71B is opened by the valve 72B. Therefore, the lubricating oil is discharged from the oil discharge holes 74A and 74B. Thus, the amount of lubricating oil guided from the crankshaft oil supply hole 34 to the compression mechanism portion 10 decreases stepwise.

[0091] Note that the spring deflection amount of the elastic member 73A is X １[m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r １ (2πn ｃ１ ) 2 + α > k ２ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B.

[0092] Figure 14 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 14(a) is a cross-sectional view showing a guide member, and Figures 14(b), 14(c), and 14(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 14 corresponds to Figure 10, and the scroll compressor according to the embodiment shown in Figure 14 is based on the configuration shown in Figure 9. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A, a second oil release mechanism 70B, and a third oil release mechanism 70C, wherein the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71A opens in the first oil release mechanism 70A, the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71B opens in the second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71C opens in the third oil release mechanism 70C are different.

[0093] As shown in Figure 14(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A, 35B, and 35C that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B. The third oil release mechanism 70C includes a guide member side oil discharge path 71C that communicates with the crankshaft side oil discharge path 35C, a valve 72C that opens and closes the guide member side oil discharge path 71C, an elastic material 73C that presses the valve 72C in the direction that closes the guide member side oil discharge path 71C, and an oil discharge hole 74C that discharges lubricating oil from the guide member side oil discharge path 71C when the guide member side oil discharge path 71C is opened by the valve 72C. A sealing member 62 is provided around the connection between the crankshaft side oil discharge path 35C and the guide member side oil discharge path 71C.

[0094] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r ２ It is positioned at the position [m]. Also, the valve 72C has mass m １ A sphere weighing [kg] is used, and the elastic material 73C has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72C is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72C is r ３ It is positioned at the location [m]. Note that the distance r １ > Distance r ２ > Distance r ３ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ <Predetermined rotational speed n> ｃ７３ That is the case.

[0095] Figure 14(b) shows the state of the first oil release mechanism 70A. As shown in Figure 14(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 14(c) shows the state of the second oil release mechanism 70B. As shown in Figure 14(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２With the above steps, the guide member side oil discharge path 71B is opened, and the guide member side oil discharge path 71B communicates with the oil discharge hole 74B. Figure 14(d) shows the state of the third oil release mechanism 70C. As shown in Figure 14(d), the third oil release mechanism 70C is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71C is closed by the valve 72C, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ３ With the above steps completed, the guide member-side oil discharge path 71C opens and communicates with the oil discharge hole 74C.

[0096] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ The above will result in a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. Also, when the crankshaft 30 is at a predetermined rotational speed n ｃ３ In the above cases, the guide member side discharge oil passage 71A is opened by valve 72A, the guide member side discharge oil passage 71B is opened by valve 72B, and furthermore, the guide member side discharge oil passage 71C is opened by valve 72C. Therefore, lubricating oil is discharged from the discharge holes 74A, 74B, and 74C. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0097] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k１ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r ２ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B. Also, the amount of spring deflection of the elastic material 73C is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72C operates and the guide member side discharge oil passage 71C opens. １ r ３ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side discharge oil passage 71C opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74C through the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71C.

[0098] Figure 15 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 15(a) is a cross-sectional view showing a guide member, and Figures 15(b), 15(c), and 15(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 15 corresponds to Figure 10, and the scroll compressor according to the embodiment shown in Figure 15 is based on the configuration shown in Figure 9. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A, a second oil release mechanism 70B, and a third oil release mechanism 70C, wherein the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71A opens in the first oil release mechanism 70A, the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71B opens in the second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71C opens in the third oil release mechanism 70C are different.

[0099] As shown in Figure 15(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A, 35B, and 35C that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B. The third oil release mechanism 70C includes a guide member side oil discharge path 71C that communicates with the crankshaft side oil discharge path 35C, a valve 72C that opens and closes the guide member side oil discharge path 71C, an elastic material 73C that presses the valve 72C in the direction that closes the guide member side oil discharge path 71C, and an oil discharge hole 74C that discharges lubricating oil from the guide member side oil discharge path 71C when the guide member side oil discharge path 71C is opened by the valve 72C. A sealing member 62 is provided around the connection between the crankshaft side oil discharge path 35C and the guide member side oil discharge path 71C.

[0100] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m ２ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １ It is positioned at the position [m]. Also, the valve 72C has mass m ３ A sphere weighing [kg] is used, and the elastic material 73C has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72C is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72C is r １ It is positioned at the location [m]. Note that the mass m １ >Mass m ２ >Mass m ３ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ <Predetermined rotational speed n> ｃ３ That is the case.

[0101] Figure 15(b) shows the state of the first oil release mechanism 70A. As shown in Figure 15(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 15(c) shows the state of the second oil release mechanism 70B. As shown in Figure 15(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２With the above steps, the guide member side oil discharge path 71B is opened, and the guide member side oil discharge path 71B communicates with the oil discharge hole 74B. Figure 15(d) shows the state of the third oil release mechanism 70C. As shown in Figure 15(d), the third oil release mechanism 70C is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71C is closed by the valve 72C, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ３ With the above steps completed, the guide member-side oil discharge path 71C opens and communicates with the oil discharge hole 74C.

[0102] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ The above will result in a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. Also, when the crankshaft 30 is at a predetermined rotational speed n ｃ３ In the above cases, the guide member side discharge oil passage 71A is opened by valve 72A, the guide member side discharge oil passage 71B is opened by valve 72B, and furthermore, the guide member side discharge oil passage 71C is opened by valve 72C. Therefore, lubricating oil is discharged from the discharge holes 74A, 74B, and 74C. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0103] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k１ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. ２ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B. Also, the amount of spring deflection of the elastic material 73C is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72C operates and the guide member side discharge oil passage 71C opens. ３ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side discharge oil passage 71C opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74C through the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71C.

[0104] Figure 16 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 16(a) is a cross-sectional view showing a guide member, and Figures 16(b), 16(c), and 16(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 16 corresponds to Figure 10, and the scroll compressor according to the embodiment shown in Figure 16 is based on the configuration shown in Figure 9. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A, a second oil release mechanism 70B, and a third oil release mechanism 70C, wherein the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71A opens in the first oil release mechanism 70A, the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71B opens in the second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71C opens in the third oil release mechanism 70C are different.

[0105] As shown in Figure 16(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B. The third oil release mechanism 70C includes a guide member side oil discharge path 71C that communicates with the crankshaft side oil discharge path 35C, a valve 72C that opens and closes the guide member side oil discharge path 71C, an elastic material 73C that presses the valve 72C in the direction that closes the guide member side oil discharge path 71C, and an oil discharge hole 74C that discharges lubricating oil from the guide member side oil discharge path 71C when the guide member side oil discharge path 71C is opened by the valve 72C. A sealing member 62 is provided around the connection between the crankshaft side oil discharge path 35C and the guide member side oil discharge path 71C.

[0106] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k ２ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １ It is positioned at the position [m]. Also, the valve 72C has mass m １ A sphere weighing [kg] is used, and the elastic material 73C has a spring constant k ３ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72C is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72C is r １ It is positioned at the [m] position. The spring constant k is also present. １ > Spring constant k ２ > Spring constant k ３ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ <Predetermined rotational speed n> ｃ３ That is the case.

[0107] Figure 16(b) shows the state of the first oil release mechanism 70A. As shown in Figure 16(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 16(c) shows the state of the second oil release mechanism 70B. As shown in Figure 16(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２With the above steps, the guide member side oil discharge path 71B is opened, and the guide member side oil discharge path 71B communicates with the oil discharge hole 74B. Figure 16(d) shows the state of the third oil release mechanism 70C. As shown in Figure 16(d), the third oil release mechanism 70C is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71C is closed by the valve 72C, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ３ With the above steps completed, the guide member-side oil discharge path 71C opens and communicates with the oil discharge hole 74C.

[0108] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ The above will result in a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. Also, when the crankshaft 30 is at a predetermined rotational speed n ｃ３ In the above cases, the guide member side discharge oil passage 71A is opened by valve 72A, the guide member side discharge oil passage 71B is opened by valve 72B, and furthermore, the guide member side discharge oil passage 71C is opened by valve 72C. Therefore, lubricating oil is discharged from the discharge holes 74A, 74B, and 74C. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0109] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k１ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r １ (2πn ｃ１ ) 2 + α > k ２ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B. Also, the amount of spring deflection of the elastic material 73C is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72C operates and the guide member side discharge oil passage 71C opens. １ r １ (2πn ｃ１ ) 2 + α > k ３ X １ When the guide member-side discharge oil passage 71C opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74C through the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71C.

[0110] Figure 17 is a longitudinal cross-sectional view of a scroll compressor according to yet another embodiment of the present invention. In the following description, only configurations different from those in Figure 1 will be described, and components identical to those in Figure 1 will be denoted by the same reference numerals and their descriptions will be omitted. In the scroll compressor according to this embodiment, the guide member 60 is used as a balance weight. As shown in Figure 17, this balance weight can be equipped with an oil release mechanism 70. In Figure 17, the guide member 60, which is the balance weight, is positioned between the sub-bearing 18 and the electric mechanism 20.

[0111] Figure 18 is an enlarged cross-sectional view of the main part of the scroll compressor according to this embodiment shown in Figure 17, where Figure 18(a) is a cross-sectional view showing the guide member, and Figures 18(b) and 18(c) are longitudinal cross-sectional views showing the same guide member.

[0112] As shown in Figure 18(a), the guide member 60 is a balance weight and is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has a crankshaft-side discharge oil passage 35 that communicates with the crankshaft oil supply hole 34. The oil release mechanism 70 has a guide member-side discharge oil passage 71 that communicates with the crankshaft-side discharge oil passage 35, a valve 72 that opens and closes the guide member-side discharge oil passage 71, an elastic material 73 that presses the valve 72 in the direction of closing the guide member-side discharge oil passage 71, and a discharge oil hole 74 that discharges lubricating oil from the guide member-side discharge oil passage 71 when the guide member-side discharge oil passage 71 is opened by the valve 72. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71.

[0113] In this embodiment, the valve 72 has a mass m １ A sphere weighing [kg] is used, and the elastic material 73 has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72 is positioned such that the distance from the rotational center of the crankshaft 30 to the center of gravity of the valve 72 is r １ It is positioned at position [m]. Figure 18(b) shows the crankshaft 30 rotating at a predetermined rotational speed n ｃ１ [s -１ Figure 18(c) shows the state of the oil release mechanism 70 when the value is less than n. ｃ１ This shows the state of the oil release mechanism 70 when the above conditions are met. As shown in Figure 18(b), when the crankshaft 30 is at a predetermined rotational speed n ｃ１ If it is less than n, the guide member side discharge oil passage 71 is closed by the valve 72. Also, as shown in Figure 18(c), when the crankshaft 30 is at a predetermined rotational speed n ｃ１In the above case, the guide member side oil discharge path 71 opens and communicates with the oil discharge hole 74. In this way, when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ When this occurs, the valve 72 opens the guide member-side oil discharge path 71, and lubricating oil is discharged from the oil discharge hole 74. Consequently, the amount of lubricating oil supplied from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases.

[0114] Furthermore, the amount of spring deflection of the elastic material 73 is X. １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72 operates and the guide member side discharge oil passage 71 opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71 opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74 through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71.

[0115] Figure 19 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 19(a) is a cross-sectional view showing a guide member, and Figures 19(b) and 19(c) are longitudinal cross-sectional views showing the same guide member. Note that Figure 19 corresponds to Figure 18, and the scroll compressor according to the embodiment shown in Figure 19 is based on the configuration shown in Figure 17. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A and a second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71B in the second oil release mechanism 70B opens.

[0116] As shown in Figure 19(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B.

[0117] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r ２It is positioned at the location [m]. Note that the distance r １ > Distance r ２ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ That is the case.

[0118] Figure 19(b) shows the state of the first oil release mechanism 70A. As shown in Figure 19(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 19(c) shows the state of the second oil release mechanism 70B. As shown in Figure 19(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２ With the above steps completed, the guide member-side oil discharge path 71B opens and communicates with the oil discharge hole 74B.

[0119] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ In the above case, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0120] Furthermore, the amount of spring deflection of the elastic material 73A is X １[m], assuming the force from the lubricating oil in the crankshaft oil supply hole 34 is α [N], the valve 72A operates under the following conditions, and the guide member side oil discharge passage 71A becomes open. m １ r １ (2πn ｃ１ )2 + α > k １ X １ When the guide member side oil discharge passage 71A becomes open, a part of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft side oil discharge passage 35 and the guide member side oil discharge passage 71A. Also, the spring deflection amount of the elastic member 73B is X １ [m], assuming the force from the lubricating oil in the crankshaft oil supply hole 34 is α [N], the valve 72B operates under the following conditions, and the guide member side oil discharge passage 71B becomes open. m １ r ２ (2πn ｃ１ )2 + α > k １ X １ When the guide member side oil discharge passage 71B becomes open, a part of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft side oil discharge passage 35 and the guide member side oil discharge passage 71B.

[0121] FIG. 20 is a further enlarged cross-sectional view of the main part of a scroll compressor according to another embodiment. FIG. 20(a) is a cross-sectional view showing the guide member, and FIGS. 20(b) and 20(c) are longitudinal sectional views showing the same guide member. Note that FIG. 20 corresponds to FIG. 18, and the scroll compressor according to the embodiment shown in FIG. 20 is based on the configuration shown in FIG. 17. In the present embodiment, as the oil release mechanism 70, it has a first oil release mechanism 70A and a second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side oil discharge passage 71A in the first oil release mechanism 70A becomes open is different from the rotational speed of the crankshaft 30 at which the guide member side oil discharge passage 71B in the second oil release mechanism 70B becomes open.

[0122] As shown in Figure 20(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B.

[0123] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m ２ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １It is positioned at the location [m]. Note that the mass m １ >Mass m ２ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ That is the case.

[0124] Figure 20(b) shows the state of the first oil release mechanism 70A. As shown in Figure 20(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 20(c) shows the state of the second oil release mechanism 70B. As shown in Figure 20(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２ With the above steps completed, the guide member-side oil discharge path 71B opens and communicates with the oil discharge hole 74B.

[0125] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ In the above case, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0126] Furthermore, the amount of spring deflection of the elastic material 73A is X １[m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. ２ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B.

[0127] Figure 21 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 21(a) is a cross-sectional view showing a guide member, and Figures 21(b) and 21(c) are longitudinal cross-sectional views showing the same guide member. Note that Figure 21 corresponds to Figure 18, and the scroll compressor according to the embodiment shown in Figure 21 is based on the configuration shown in Figure 17. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A and a second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side discharge oil path 71B in the second oil release mechanism 70B opens.

[0128] As shown in Figure 21(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B.

[0129] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １ A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k ２ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １It is positioned at the [m] position. The spring constant k is also present. １ > Spring constant k ２ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ That is the case.

[0130] Figure 21(b) shows the state of the first oil release mechanism 70A. As shown in Figure 21(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 21(c) shows the state of the second oil release mechanism 70B. As shown in Figure 21(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２ With the above steps completed, the guide member-side oil discharge path 71B opens and communicates with the oil discharge hole 74B.

[0131] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ In the above case, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0132] Furthermore, the amount of spring deflection of the elastic material 73A is X １[m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r １ (2πn ｃ１ ) 2 + α > k ２ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B.

[0133] Figure 22 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 22(a) is a cross-sectional view showing a guide member, and Figures 22(b), 22(c), and 22(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 22 corresponds to Figure 18, and the scroll compressor according to the embodiment shown in Figure 22 is based on the configuration shown in Figure 17. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A, a second oil release mechanism 70B, and a third oil release mechanism 70C, wherein the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71A in the first oil release mechanism 70A opens is different from the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71B in the second oil release mechanism 70B opens, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71C in the third oil release mechanism 70C opens.

[0134] As shown in Figure 22(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A, 35B, and 35C that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B. The third oil release mechanism 70C includes a guide member side oil discharge path 71C that communicates with the crankshaft side oil discharge path 35C, a valve 72C that opens and closes the guide member side oil discharge path 71C, an elastic material 73C that presses the valve 72C in the direction that closes the guide member side oil discharge path 71C, and an oil discharge hole 74C that discharges lubricating oil from the guide member side oil discharge path 71C when the guide member side oil discharge path 71C is opened by the valve 72C. A sealing member 62 is provided around the connection between the crankshaft side oil discharge path 35C and the guide member side oil discharge path 71C.

[0135] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r ２ It is positioned at the position [m]. Also, the valve 72C has mass m １ A sphere weighing [kg] is used, and the elastic material 73C has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72C is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72C is r ３ It is positioned at the location [m]. Note that the distance r １ > Distance r ２ > Distance r ３ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ <Predetermined rotational speed n> ｃ７３ That is the case.

[0136] Figure 22(b) shows the state of the first oil release mechanism 70A. As shown in Figure 22(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 22(c) shows the state of the second oil release mechanism 70B. As shown in Figure 22(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２With the above steps, the guide member side oil discharge path 71B is opened, and the guide member side oil discharge path 71B communicates with the oil discharge hole 74B. Figure 22(d) shows the state of the third oil release mechanism 70C. As shown in Figure 22(d), the third oil release mechanism 70C is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71C is closed by the valve 72C, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ３ With the above steps completed, the guide member-side oil discharge path 71C opens and communicates with the oil discharge hole 74C.

[0137] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ The above will result in a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. Also, when the crankshaft 30 is at a predetermined rotational speed n ｃ３ In the above cases, the guide member side discharge oil passage 71A is opened by valve 72A, the guide member side discharge oil passage 71B is opened by valve 72B, and furthermore, the guide member side discharge oil passage 71C is opened by valve 72C. Therefore, lubricating oil is discharged from the discharge holes 74A, 74B, and 74C. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0138] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k１ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r ２ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B. Also, the amount of spring deflection of the elastic material 73C is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72C operates and the guide member side discharge oil passage 71C opens. １ r ３ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side discharge oil passage 71C opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74C through the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71C.

[0139] Figure 23 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 23(a) is a cross-sectional view showing a guide member, and Figures 23(b), 23(c), and 23(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 23 corresponds to Figure 18, and the scroll compressor according to the embodiment shown in Figure 23 is based on the configuration shown in Figure 17. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A, a second oil release mechanism 70B, and a third oil release mechanism 70C, wherein the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71A opens in the first oil release mechanism 70A, the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71B opens in the second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71C opens in the third oil release mechanism 70C are different.

[0140] As shown in Figure 23(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A, 35B, and 35C that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B. The third oil release mechanism 70C includes a guide member side oil discharge path 71C that communicates with the crankshaft side oil discharge path 35C, a valve 72C that opens and closes the guide member side oil discharge path 71C, an elastic material 73C that presses the valve 72C in the direction that closes the guide member side oil discharge path 71C, and an oil discharge hole 74C that discharges lubricating oil from the guide member side oil discharge path 71C when the guide member side oil discharge path 71C is opened by the valve 72C. A sealing member 62 is provided around the connection between the crankshaft side oil discharge path 35C and the guide member side oil discharge path 71C.

[0141] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m ２ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １ It is positioned at the position [m]. Also, the valve 72C has mass m ３ A sphere weighing [kg] is used, and the elastic material 73C has a spring constant k １ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72C is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72C is r １ It is positioned at the location [m]. Note that the mass m １ >Mass m ２ >Mass m ３ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ <Predetermined rotational speed n> ｃ３ That is the case.

[0142] Figure 23(b) shows the state of the first oil release mechanism 70A. As shown in Figure 23(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 23(c) shows the state of the second oil release mechanism 70B. As shown in Figure 23(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２With the above steps, the guide member side oil discharge path 71B is opened, and the guide member side oil discharge path 71B communicates with the oil discharge hole 74B. Figure 23(d) shows the state of the third oil release mechanism 70C. As shown in Figure 23(d), the third oil release mechanism 70C is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71C is closed by the valve 72C, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ３ With the above steps completed, the guide member-side oil discharge path 71C opens and communicates with the oil discharge hole 74C.

[0143] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ The above will result in a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. Also, when the crankshaft 30 is at a predetermined rotational speed n ｃ３ In the above cases, the guide member side discharge oil passage 71A is opened by valve 72A, the guide member side discharge oil passage 71B is opened by valve 72B, and furthermore, the guide member side discharge oil passage 71C is opened by valve 72C. Therefore, lubricating oil is discharged from the discharge holes 74A, 74B, and 74C. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0144] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k１ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. ２ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B. Also, the amount of spring deflection of the elastic material 73C is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72C operates and the guide member side discharge oil passage 71C opens. ３ r １ (2πn ｃ１ ) 2 + α > k １ X １ When the guide member-side discharge oil passage 71C opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74C through the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71C.

[0145] Figure 24 is an enlarged cross-sectional view of the main part of a scroll compressor according to yet another embodiment, where Figure 24(a) is a cross-sectional view showing a guide member, and Figures 24(b), 24(c), and 24(d) are longitudinal cross-sectional views showing the same guide member. Note that Figure 24 corresponds to Figure 18, and the scroll compressor according to the embodiment shown in Figure 24 is based on the configuration shown in Figure 17. In this embodiment, the oil release mechanism 70 has a first oil release mechanism 70A, a second oil release mechanism 70B, and a third oil release mechanism 70C, wherein the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71A opens in the first oil release mechanism 70A, the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71B opens in the second oil release mechanism 70B, and the rotational speed of the crankshaft 30 at which the guide member side discharge oil passage 71C opens in the third oil release mechanism 70C are different.

[0146] As shown in Figure 24(a), the guide member 60 is fixed to the crankshaft 30. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has crankshaft-side discharge oil passages 35A and 35B that communicate with the crankshaft oil supply hole 34. The first oil release mechanism 70A has a guide member-side discharge oil passage 71A that communicates with the crankshaft-side discharge oil passage 35A, a valve 72A that opens and closes the guide member-side discharge oil passage 71A, an elastic material 73A that presses the valve 72A in the direction of closing the guide member-side discharge oil passage 71A, and a discharge oil hole 74A that discharges lubricating oil from the guide member-side discharge oil passage 71A when the guide member-side discharge oil passage 71A is opened by the valve 72A. A sealing member 62 is provided around the connection between the crankshaft-side discharge oil passage 35A and the guide member-side discharge oil passage 71A. The second oil release mechanism 70B includes a guide member side discharge oil passage 71B that communicates with the crankshaft side discharge oil passage 35B, a valve 72B that opens and closes the guide member side discharge oil passage 71B, an elastic material 73B that presses the valve 72B in the direction that closes the guide member side discharge oil passage 71B, and a discharge oil hole 74B that discharges lubricating oil from the guide member side discharge oil passage 71B when the guide member side discharge oil passage 71B is opened by the valve 72B. A sealing member 62 is provided around the connection between the crankshaft side discharge oil passage 35B and the guide member side discharge oil passage 71B. The third oil release mechanism 70C includes a guide member side oil discharge path 71C that communicates with the crankshaft side oil discharge path 35C, a valve 72C that opens and closes the guide member side oil discharge path 71C, an elastic material 73C that presses the valve 72C in the direction that closes the guide member side oil discharge path 71C, and an oil discharge hole 74C that discharges lubricating oil from the guide member side oil discharge path 71C when the guide member side oil discharge path 71C is opened by the valve 72C. A sealing member 62 is provided around the connection between the crankshaft side oil discharge path 35C and the guide member side oil discharge path 71C.

[0147] In this embodiment, the valve 72A has a mass m １ A sphere weighing [kg] is used, and the elastic material 73A has a spring constant k １A coil spring with a force of [N / m] is used. Furthermore, the spherical valve 72A is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72A is r １ It is positioned at the position [m]. Also, the valve 72B has a mass m １ A sphere weighing [kg] is used, and the elastic material 73B has a spring constant k ２ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72B is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72B is r １ It is positioned at the position [m]. Also, the valve 72C has mass m １ A sphere weighing [kg] is used, and the elastic material 73C has a spring constant k ３ A coil spring with a force of N / m is used. Furthermore, the spherical valve 72C is positioned such that the distance from the center of rotation of the crankshaft 30 to the center of gravity of the valve 72C is r １ It is positioned at the [m] position. The spring constant k is also present. １ > Spring constant k ２ > Spring constant k ３ Let the predetermined rotational speed n ｃ１ <Predetermined rotational speed n> ｃ２ <Predetermined rotational speed n> ｃ３ That is the case.

[0148] Figure 24(b) shows the state of the first oil release mechanism 70A. As shown in Figure 24(b), the first oil release mechanism 70A is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ１ If the value is less than n, the guide member side oil discharge path 71A is closed by the valve 72A, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ１ With the above steps, the guide member side oil discharge path 71A is opened, and the guide member side oil discharge path 71A communicates with the oil discharge hole 74A. Figure 24(c) shows the state of the second oil release mechanism 70B. As shown in Figure 24(c), the second oil release mechanism 70B is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side oil discharge path 71B is closed by the valve 72B, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ２With the above steps, the guide member side oil discharge path 71B is opened, and the guide member side oil discharge path 71B communicates with the oil discharge hole 74B. Figure 24(d) shows the state of the third oil release mechanism 70C. As shown in Figure 24(d), the third oil release mechanism 70C is activated when the crankshaft 30 reaches a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71C is closed by the valve 72C, and the crankshaft 30 rotates at a predetermined rotational speed n ｃ３ With the above steps completed, the guide member-side oil discharge path 71C opens and communicates with the oil discharge hole 74C.

[0149] In this way, the crankshaft 30 rotates at a predetermined speed n ｃ１ The above will result in a predetermined rotational speed n ｃ２ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and lubricating oil is discharged from the discharge oil hole 74A. Also, when the crankshaft 30 reaches a predetermined rotational speed n ｃ２ The above will result in a predetermined rotational speed n ｃ３ If the value is less than n, the guide member side discharge oil passage 71A is opened by valve 72A, and in addition, the guide member side discharge oil passage 71B is opened by valve 72B. Therefore, lubricating oil is discharged from the discharge oil holes 74A and 74B. Also, when the crankshaft 30 is at a predetermined rotational speed n ｃ３ In the above cases, the guide member side discharge oil passage 71A is opened by valve 72A, the guide member side discharge oil passage 71B is opened by valve 72B, and furthermore, the guide member side discharge oil passage 71C is opened by valve 72C. Therefore, lubricating oil is discharged from the discharge holes 74A, 74B, and 74C. In this way, the amount of lubricating oil introduced from the crankshaft oil supply hole 34 to the compression mechanism 10 decreases in stages.

[0150] Furthermore, the amount of spring deflection of the elastic material 73A is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, valve 72A operates and the guide member side discharge oil passage 71A opens. １ r １ (2πn ｃ１ ) 2 + α > k１ X １ When the guide member-side oil discharge path 71A opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74A through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71A. Also, the amount of spring deflection of the elastic material 73B is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72B operates and the guide member side discharge oil passage 71B opens. １ r １ (2πn ｃ１ ) 2 + α > k ２ X １ When the guide member-side oil discharge path 71B opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74B through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71B. Also, the amount of spring deflection of the elastic material 73C is X １ [m], if the force from the lubricating oil in the crankshaft oil supply hole 34 is α[N], then under the following conditions, the valve 72C operates and the guide member side discharge oil passage 71C opens. １ r １ (2πn ｃ１ ) 2 + α > k ３ X １ When the guide member-side discharge oil passage 71C opens, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74C through the crankshaft-side discharge oil passage 35 and the guide member-side discharge oil passage 71C.

[0151] Figure 25 is a longitudinal cross-sectional view of a scroll compressor according to yet another embodiment of the present invention, and Figure 26 is an enlarged view of the main part of Figure 25. In the following description, only configurations different from those in Figure 1 will be described, and the same reference numerals will be used for components identical to those in Figure 1, and their descriptions will be omitted. The scroll compressor according to this embodiment is based on the configuration of the scroll compressor shown in Figure 9, and the guide member 60, which is a balance weight, is positioned between the electric mechanism 20 and the compression mechanism 10. The scroll compressor according to this embodiment has a discharge pipe 75 that passes inside the rotor 22. One end 75x of the discharge pipe 75 is connected to the discharge oil hole 74, and the other end 75y of the discharge pipe 75 is located outside the rotor 22.

[0152] Figure 26(a) shows the crankshaft 30 rotating at a predetermined rotational speed n ｃ１ The value is less than the specified value, indicating that the guide member side discharge oil passage 71 is blocked by the valve 72. Figure 26(b) shows that the crankshaft 30 is rotating at a predetermined rotational speed n ｃ１ The above shows the state in which the guide member side discharge oil path 71 is open and communicates with the discharge oil hole 74. In this way, by passing the lubricating oil discharged from the discharge oil hole 74 through the discharge pipe 75 into the inside of the rotor 22, the lubricating oil is agitated between the compression mechanism 10 and the electric mechanism 20, and it is possible to prevent the agitated lubricating oil from being discharged from the compressor together with the refrigerant.

[0153] Figure 27 is a longitudinal cross-sectional view of a scroll compressor according to yet another embodiment of the present invention, and Figure 28 is an enlarged view of the main part of Figure 27. In the following description, only configurations different from those in Figure 1 will be described, and the same reference numerals will be used for components identical to those in Figure 1, and their descriptions will be omitted. The scroll compressor according to this embodiment is based on the configuration of the scroll compressor shown in Figure 9, and the guide member 60, which is a balance weight, is arranged between the electric mechanism 20 and the compression mechanism 10. In the scroll compressor according to this embodiment, a crankshaft oil return hole 76 is formed in the crankshaft 30, and the discharge oil hole 74 is connected to the crankshaft oil return hole 76.

[0154] Figure 28(a) shows the crankshaft 30 rotating at a predetermined rotational speed n ｃ１The value is less than the specified value, indicating that the guide member side discharge oil passage 71 is blocked by the valve 72. Figure 28(b) shows that the crankshaft 30 is rotating at a predetermined rotational speed n ｃ１ The above shows the state in which the guide member side discharge oil path 71 is open and communicates with the discharge oil hole 74. In this way, by passing the lubricating oil discharged from the discharge oil hole 74 through the crankshaft oil return hole 76 into the crankshaft 30, the lubricating oil discharged from the discharge oil hole 74 is agitated, and it is possible to prevent the agitated lubricating oil from being discharged from the compressor together with the refrigerant.

[0155] Figure 29 is a longitudinal cross-sectional view of a scroll compressor according to yet another embodiment of the present invention, and Figure 30 is an enlarged view of the main part of Figure 29. In the following description, only the configurations that differ from those in Figure 1 will be described, and the same components as in Figure 1 will be denoted by the same reference numerals and their descriptions will be omitted. The scroll compressor according to this embodiment, like the scroll compressor shown in Figure 1, has a guide member 60 provided between the sub-bearing 18 and the electric mechanism 20, but uses an oil squirt as the lubrication mechanism 5. Figure 30(a) shows the crankshaft 30 rotating at a predetermined rotational speed n ｃ１ The value is less than the specified value, indicating that the guide member side discharge oil passage 71 is blocked by the valve 72. Figure 30(b) shows that the crankshaft 30 is rotating at a predetermined rotational speed n ｃ１ The above shows the state in which the guide member side discharge oil passage 71 is open and communicates with the discharge hole 74. In this way, even when an oil splash is used as the lubrication mechanism 5, when the guide member side discharge oil passage 71 is open, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the discharge hole 74 through the crankshaft side discharge oil passage 35 and the guide member side discharge oil passage 71.

[0156] Figure 31 is a longitudinal cross-sectional view of a rotary compressor according to yet another embodiment of the present invention, and Figure 32 is an enlarged view of the main part of Figure 31. In this embodiment, the compression mechanism 10 consists of two cylinders and two pistons, but it may also consist of one cylinder and one piston. The rotary compressor according to this embodiment comprises an electric motor 20 and a compression mechanism 10 inside a sealed container 1. The electric motor 20 is positioned above the compression mechanism 10. The electric motor 20 and the compression mechanism 10 are connected by a crankshaft 30.

[0157] The sealed container 1 consists of a cylindrical body 1a extending vertically, an upper lid 1c that closes the upper opening of the body 1a, and a lower lid 1b that closes the lower opening of the body 1a. The electric mechanism 20 consists of a stator 21 fixed to the inner surface of the sealed container 1 and a rotor 22 that rotates within the stator 21. The rotary compressor according to this embodiment has a compression mechanism 10 consisting of a first compression mechanism 10A and a second compression mechanism 10B. The first compression mechanism 10A has a first cylinder 13A, a first piston 19A arranged inside the first cylinder 13A, and vanes (not shown) that partition the inside of the first cylinder 13A, and the first piston 19A revolves inside the first cylinder 13A to draw in and compress low-pressure gaseous refrigerant. Similar to the first compression mechanism 10A, the second compression mechanism 10B includes a second cylinder 13B, a second piston 19B positioned inside the second cylinder 13B, and vanes (not shown) that partition the inside of the second cylinder 13B. The second piston 19B revolves inside the second cylinder 13B, thereby drawing in and compressing low-pressure gaseous refrigerant.

[0158] A main bearing 40 is positioned on one side of the first cylinder 13A, and a middle plate 81 is positioned on the other side of the first cylinder 13A. Similarly, a middle plate 81 is positioned on one side of the second cylinder 13B, and a sub-bearing 18 is positioned on the other side of the second cylinder 13B. In other words, the middle plate 81 separates the first cylinder 13A and the second cylinder 13B. The middle plate 81 has an opening larger than the diameter of the crankshaft 30. The crankshaft 30 has a first eccentric portion 36 to which the first piston 19A is attached, and a second eccentric portion 37 to which the second piston 19B is attached. The first eccentric portion 36 and the second eccentric portion 37 are formed with a phase difference of 180 degrees.

[0159] The first compression chamber 10A is formed between the main bearing 40 and the intermediate plate 81, between the inner surface of the first cylinder 13A and the outer surface of the first piston 19A. The second compression chamber 10B is formed between the intermediate plate 81 and the sub-bearing 18, between the inner surface of the second cylinder 13B and the outer surface of the second piston 19B. The volumes of the first compression chamber 15A and the second compression chamber 15B are the same. That is, the inner diameter of the first cylinder 13A and the inner diameter of the second cylinder 13B are the same, and the outer diameter of the first piston 19A and the outer diameter of the second piston 19B are the same. Also, the inner height of the first cylinder 13A and the inner height of the second cylinder 13B are the same, and the height of the first piston 19A and the height of the second piston 19B are the same.

[0160] The compression mechanism 10 is positioned between the main bearing 40 and the sub-bearing 18, with the main bearing 40 positioned between the compression mechanism 10 and the electric mechanism 20. The main bearing 40 is provided with a valve cover 82, and the sub-bearing 18 is provided with a second valve cover 83. The gaseous refrigerant compressed by the first compression mechanism 10A is discharged into the valve cover 82 through a discharge hole (not shown) formed in the main bearing 40. The gaseous refrigerant compressed by the second compression mechanism 10B is discharged into the second valve cover 83 through a discharge hole (not shown) formed in the sub-bearing 18, and from within the second valve cover 83, it is discharged into the valve cover 82 through communication holes (not shown) formed in the sub-bearing 18, the second cylinder 13B, the intermediate plate 81, the first cylinder 13A, and the main bearing 40. The gaseous refrigerant discharged into the valve cover 82 is discharged into the sealed container 1 through a valve cover nozzle (not shown). Discharge valves (not shown) are provided in the discharge holes formed in the main bearing 40 and the discharge holes formed in the sub-bearing 18.

[0161] An oil reservoir 4 is formed at the bottom of the sealed container 1, and an oil spray mechanism 5 is provided on the sub-shaft 33 of the crankshaft 30. An axial crankshaft oil supply hole 34 is formed inside the crankshaft 30, and a passage for supplying oil to the sliding surface of the compression mechanism 10 is formed in the crankshaft oil supply hole 34. A first refrigerant suction pipe 2A and a second refrigerant suction pipe 2B for introducing gaseous refrigerant into the compression mechanism 10 are connected to the body 1a. A refrigerant discharge pipe 3 for discharging the gaseous refrigerant compressed in the compression mechanism 10 is connected to the top cover 1c. The first refrigerant suction pipe 2A is connected to the first compression chamber 15A, and the second refrigerant suction pipe 2B is connected to the second compression chamber 15B. An accumulator 84 is provided upstream of the first refrigerant suction pipe 2A and the second refrigerant suction pipe 2B. The accumulator 84 separates the refrigerant returning from the refrigeration cycle into liquid refrigerant and gaseous refrigerant. Gaseous refrigerant flows through the first refrigerant suction pipe 2A and the second refrigerant suction pipe 2B.

[0162] As the crankshaft 30 rotates, the first piston 19A and the second piston 19B revolve within the first compression chamber 15A and the second compression chamber 15B. As the crankshaft 30 rotates, lubricating oil drawn up from the oil reservoir 4 is supplied to the compression mechanism 10 through the crankshaft oil supply hole 34, lubricating the sliding surfaces of the compression mechanism 10. As the first piston 19A and the second piston 19B revolve, the gaseous refrigerant drawn into the first compression chamber 15A and the second compression chamber 15B from the first refrigerant intake pipe 2A and the second refrigerant intake pipe 2B is compressed within the first compression chamber 15A and the second compression chamber 15B, and then discharged into the sealed container 1 together with the lubricating oil.

[0163] The gaseous refrigerant discharged into the sealed container 1 passes through a refrigerant passage (not shown) provided in the rotor 22. As the gaseous refrigerant discharged into the sealed container 1 rises through the refrigerant passage, some of the oil is separated, and as the gaseous refrigerant passes through the electric mechanism 20, some of the lubricating oil is further separated in the space above the electric mechanism 20. Then, the gaseous refrigerant is discharged outside the sealed container 1 from the refrigerant discharge pipe 3.

[0164] In this embodiment, the rotary compressor has a condenser 51, a pressure reducing device 52, and an evaporator 54 connected in a ring by refrigerant piping 55. The condenser 51 condenses the refrigerant discharged from the refrigerant discharge pipe 3. The pressure reducing device 52 reduces the pressure of the refrigerant condensed in the condenser 51. The evaporator 54 evaporates the refrigerant reduced in pressure by the pressure reducing device 52. The refrigerant evaporated in the evaporator 54 is returned to the compression mechanism 10 by the refrigerant suction pipe 2.

[0165] A guide member 60 is provided on the crankshaft 30. The guide member 60 is attached to the crankshaft 30 and rotates together with the crankshaft 30. The guide member 60 is equipped with an oil release mechanism 70. The guide member 60 is positioned downstream of the oil supply mechanism 5 and upstream of the compression mechanism 10. In Figure 31, the guide member 60 is provided downstream of the sub-bearing 18. The guide member 60 in this embodiment is a ring shape divided into two radial sections, similar to the guide member 60 shown in Figure 2(a), and is fixed to the crankshaft 30 by fasteners 61. A crankshaft oil supply hole 34 is formed at the rotation center of the crankshaft 30. The crankshaft 30 also has a crankshaft-side oil discharge path 35 that communicates with the crankshaft oil supply hole 34. Note that the guide member 60 shown in Figures 3 to 8 can also be used in this embodiment.

[0166] Figure 32(a) shows the crankshaft 30 rotating at a predetermined rotational speed n ｃ１ The value is less than the specified value, indicating that the guide member side discharge oil passage 71 is blocked by the valve 72. Figure 32(b) shows that the crankshaft 30 is rotating at a predetermined rotational speed n ｃ１ The above shows the state in which the guide member-side oil discharge path 71 is open and communicates with the oil discharge hole 74. In this way, when the guide member-side oil discharge path 71 is open, a portion of the lubricating oil flowing through the crankshaft oil supply hole 34 is discharged from the oil discharge hole 74 through the crankshaft-side oil discharge path 35 and the guide member-side oil discharge path 71.

[0167] As described in each embodiment, by providing a guide member 60 on the crankshaft 30 and equipping the guide member 60 with an oil release mechanism 70, the design flexibility is significantly improved and centrifugal force can be applied more easily compared to the case where the oil release mechanism 70 is provided inside the crankshaft 30. The oil release mechanism 70 prevents the supply of excessive lubricating oil to the compressor at high rotational speeds. Therefore, when combined with a lubrication mechanism with high lubrication capacity, it is possible to supply sufficient lubricating oil to the compression mechanism at low rotational speeds while preventing the supply of excessive lubricating oil to the compressor at high rotational speeds. Consequently, the operating range of the compressor can be expanded and the amount of lubricating oil discharged from the compressor to the refrigerant can be reduced, preventing a shortage of lubricating oil in the compressor. Furthermore, the adhesion of lubricating oil to the condenser 51, pressure reducing device 52, evaporator 54, and the refrigerant piping 55 connecting them can be reduced, thus contributing to improved performance and reliability of the refrigeration cycle equipment.

[0168] Furthermore, by providing a first oil release mechanism 70A and a second oil release mechanism 70B that open at different rotational speeds, the range of variation in the amount of lubricating oil guided from the crankshaft oil supply hole 34 to the compression mechanism 10 can be reduced, enabling smooth changes in the amount of lubricating oil. By making the distances of the valve 72A in the first oil release mechanism 70A and the valve 72B in the second oil release mechanism 70B from the rotation center of the crankshaft 30 different, the valves 72A and 72B can be opened at different rotational speeds, thereby reducing the range of variation in the amount of lubricating oil guided from the crankshaft oil supply hole 34 to the compression mechanism 10. In addition, by making the masses of the valve 72A in the first oil release mechanism 70A and the valve 72B in the second oil release mechanism 70B different, the valves 72A and 72B can be opened at different rotational speeds, thereby reducing the range of variation in the amount of lubricating oil guided from the crankshaft oil supply hole 34 to the compression mechanism 10. Furthermore, by making the spring constants of the elastic material 73A in the first oil release mechanism 70A and the elastic material 73B in the second oil release mechanism 70B different, the valves 72A and 72B can be opened at different rotational speeds, thereby reducing the range of variation in the amount of lubricating oil guided from the crankshaft oil supply hole 34 to the compression mechanism 10. In addition, in the compressor according to this embodiment, the condenser 51, pressure reducing device 52, and evaporator 54 are connected in a ring shape by refrigerant piping 55, which reduces the amount of lubricating oil discharged from the compressor along with the refrigerant, eliminating lubricating oil shortage in the compressor, and also reduces the adhesion of lubricating oil to the condenser 51, pressure reducing device 52, evaporator 54 connected to the compressor, and the refrigerant piping 55 connecting them. Examples of equipment using a compressor suitable for low-speed operation include, among air conditioning systems, room air conditioners (household air conditioners) and multi-split air conditioners for buildings.

[0169] Furthermore, R32 and R410A can be used as refrigerants, as well as natural refrigerants such as R290 and CO2. ２ A refrigerant can also be used. If the refrigerant contains at least R32, it is preferable to use alkylbenzene oil as the lubricant. Furthermore, at least CO ２If the refrigerant contains CO2, it is preferable to use polyalkylene glycol oil as the lubricant. Furthermore, if the refrigerant contains at least R290, it is preferable to use polyalkylene glycol oil as the lubricant. The lubricant preferably has a kinematic viscosity of 35 mm / s or less, but for example CO2 ２ For refrigerants including R290, the kinematic viscosity may exceed 35 mm / s. Furthermore, as refrigerants, R1234yf, HFO1123, refrigerants containing R1234yf, or refrigerants containing HFO1123 can be used. For R1234yf and refrigerants containing R1234yf, alkylbenzene oil is preferred as the lubricating oil, while for HFO1123 and refrigerants containing HFO1123, ester oil or ether oil is preferred as the refrigeration oil.

[0170] The compressor of the present invention is useful for equipment such as hot water heating systems, indoor air conditioning systems, vehicle-mounted air conditioning systems, water heaters, refrigerators, display cases, chillers, or refrigeration units.

[0171] 1 Sealed container 1a Body 1b Bottom lid 1c Top lid 2 Refrigerant suction pipe 2A First refrigerant suction pipe 2B Second refrigerant suction pipe 3 Refrigerant discharge pipe 4 Oil reservoir 5 Oil supply mechanism 6 Discharge chamber 7 Injection pipe 10 Compression mechanism 10A First compression mechanism 10B Second compression mechanism 11 Fixed scroll 11a Fixed scroll end plate 11b Fixed spiral wrap 11c Outer peripheral wall 12 Orbiting scroll 12a Orbiting scroll end plate 12b Orbiting spiral wrap 12c Boss 13A First cylinder 13B Second cylinder 14 Discharge port 15 Compression chamber 15A First compression chamber 15B Second compression chamber 15a Suction port 16 Bolt 17 Rotation restraint member 18 Sub-bearing 19A First piston 19B Second piston 20 Electric mechanism 21 Stator 22 Rotor 30 Crankshaft 30a Pump shaft 31 Main shaft 32 Eccentric shaft 33 Sub-shaft 34 Crankshaft oil supply holes 35, 35A, 35B, 35C Crankshaft side oil discharge path 36 First eccentric part 37 Second eccentric part 38 Oil groove 40 Main bearing 41 Bearing part 42 Boss housing part 43 Ring-shaped recess for sealing 45 Ring-shaped recess for rotation restraint member 51 Condenser 52 Pressure reducing device 53 Gas-liquid separator 54 Evaporator 55 Refrigerant piping 60 Guide member 61 Fastener 62 Seal member 70 Oil release mechanism 70A First oil release mechanism 70B Second oil release mechanism 70C Third oil release mechanism 71, 71A, 71B, 71C Guide member side drain oil passage 72, 72A, 72B, 72C Valve 73, 73A, 73B, 73C Elastic material 74, 74A, 74B, 74C Drain oil hole 75 Drain pipe 75x one end 75y other end 76 Crankshaft oil return hole 81 Intermediate plate 82 Valve cover 83 Second valve cover 84 Accumulator

Claims

1. A compressor comprising: a compression mechanism that forms a compression chamber; an electric mechanism that includes a stator and a rotor disposed inside the stator; a crankshaft that rotates by the electric mechanism to operate the compression mechanism and an oil reservoir for storing lubricating oil; a crankshaft oil supply hole formed in the crankshaft for guiding the lubricating oil to the compression mechanism; and an oil supply mechanism for supplying the lubricating oil stored in the oil reservoir to the crankshaft oil supply hole, wherein the amount of oil supplied to the crankshaft oil supply hole increases with increasing rotational speed of the crankshaft, wherein the crankshaft has a crankshaft-side discharge oil path that communicates with the crankshaft oil supply hole, a guide member attached to the crankshaft and rotating together with the crankshaft is provided, the guide member is provided with an oil release mechanism, the oil release mechanism has a guide member-side discharge oil path that communicates with the crankshaft-side discharge oil path, and a valve for opening and closing the guide member-side discharge oil path. A compressor comprising: an elastic material that presses the valve in a direction that closes the guide member side discharge oil passage; and a discharge oil hole that discharges the lubricating oil from the guide member side discharge oil passage when the guide member side discharge oil passage is opened by the valve, wherein when the crankshaft rotates at a predetermined speed or higher, the valve moves due to centrifugal force, the guide member side discharge oil passage opens, the lubricating oil is discharged from the discharge oil hole, and the amount of lubricating oil guided to the compression mechanism from the crankshaft oil supply hole is reduced.

2. The compressor according to claim 1, characterized in that the guide member is used as a balance weight.

3. The compressor according to claim 2, characterized in that the rotor is fixed to the crankshaft, the balance weight is placed between the compression mechanism and the electric mechanism, one end of the discharge pipe passing through the inside of the rotor is connected to the discharge oil hole, and the other end of the discharge pipe is located outside the rotor.

4. The compressor according to claim 1, characterized in that a crankshaft oil return hole is formed in the crankshaft and the discharge oil hole is connected to the crankshaft oil return hole.

5. The compressor according to claim 1, wherein the oil release mechanism comprises a first oil release mechanism and a second oil release mechanism, the first oil release mechanism and the second oil release mechanism communicate with the crankshaft oil supply hole, and the rotational speed of the crankshaft at which the guide member side discharge oil path in the first oil release mechanism opens is different from the rotational speed of the crankshaft at which the guide member side discharge oil path in the second oil release mechanism opens.

6. The compressor according to claim 5, characterized in that the distance from the center of rotation of the crankshaft between the valve in the first oil release mechanism and the valve in the second oil release mechanism is different.

7. The compressor according to claim 5, characterized in that the mass of the valve in the first oil release mechanism and the mass of the valve in the second oil release mechanism are different.

8. The compressor according to claim 5, characterized in that the spring constant of the elastic material in the first oil release mechanism and the spring constant of the elastic material in the second oil release mechanism are different.

9. An apparatus using a compressor according to any one of claims 1 to 8, characterized in that the compressor, condenser, pressure reducing device, and evaporator are connected in a ring shape by refrigerant piping.

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