公开(公告)号：JPH04143487A

公开(公告)日：1992-05-18

申请号：JP26771090

申请日：1990-10-04

Applicant: MATSUSHITA REFRIGERATION

Inventor： MORITA ICHIRO ,  YOSHIMURA TAKAO ,  OGAWARA HIDEJI

IPC: F04C29/02 ,  F04C29/00

Abstract: PURPOSE:To reduce the slide loss and enhance the efficiency and reliability of a compressor by furnishing a vane moving in a vane groove reciprocatively, wherein a plurality of rhombic grooves are provided at the end faces of the vane which are confronting a main and an aux. bearing. CONSTITUTION:When a vane 19 moves toward the center of a cylinder 4. the lubricant within rhombic grooves 20-23 provided at the end face 19a on the main bearing 7 side is led to sealing parts 20a-23a. Meantime the pressure of the lubricant is boosted by the wedge effect. Also at the end face 19b on the aux. bearing 7 side of the vane 19, the pressure of the lubricant is boosted in rhombic grooves 24-27. When true vane 19 moves from the center of the cylinder 4 to the spring 10 side, the pressure of the lubricant is alike boosted by the wedge effect in the period being led to sealing parts 20b-23b, and the pressure also rises at the end face 19b on the aux. bearing 7 side. The gap deltaa between the end face 19a and main bearing 7 and the gap deltab between the other end face 19b and aux. bearing 8 shall be held so that deltaa=deltab.

公开(公告)号：JPH04143481A

公开(公告)日：1992-05-18

申请号：JP26771690

申请日：1990-10-04

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGAWARA HIDEJI ,  YOSHIMURA TAKAO ,  MORITA ICHIRO ,  KOYAMA TAKASHI

IPC: F04C18/356

Abstract: PURPOSE:To enhance the volume efficiency by providing a plurality of communicating parts leading from a concave step on the internal circumferential side of the roller end faces to another step on the internal circumferential side, furnishing a plurality of sealing parts which decrease the section area as going apart from these communicating parts, and forming grooves from these communicating part and sealing parts. CONSTITUTION:A roller 19 make revolution and a rotating round its own axis associate with rotation of a shaft 3, and thereby a spiral motion is generated. In grooves 20-27 on the end face 19a of this roller 19, those 20c, 21c, 23b-26b, 26c, 27c of the sealing parts 20b-27b, 20c-27c decrease the section area as going in the lubricant flowing direction as shown by the broken arrow, and an oil-hydraulic force is generated by the lubricant flowing in from a plurality of communicating parts 20a-27a. With the rotation component constituting the spiral motion of the roller 19, sealing parts 20b-27b, 20c decreasing the section are approx. in the circumferential direction are formed, so that an oil-hydraulic force due to wedge effect is generated in either direction of rotating round own axis. and the same magnitude of oil-hydraulic force is always generated in dispersed positions on the end faces 19a, 19b of the roller 19 so as to give well balanced condition.

公开(公告)号：JPH04116285A

公开(公告)日：1992-04-16

申请号：JP23680490

申请日：1990-09-05

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGAWARA HIDEJI ,  YOSHIMURA TAKAO ,  MORITA ICHIRO ,  KOYAMA TAKASHI

IPC: F04C18/344

Abstract: PURPOSE:To improve the volume efficiency and improve the performance index by providing an intermediate pressure system controlling the pressure in a back pressure chamber at the intermediate pressure between the low pressure and the high pressure, and setting the thickness of a vane to the thickness determined by the preset equation. CONSTITUTION:A vane 24, a back pressure chamber 25 surrounded by the back face of the vane 24 and the main bearing and auxiliary bearing of a cylinder 21, and an intermediate pressure system controlling the pressure in the back pressure chamber 25 at the intermediate pressure Pd' between the low pressure Ps and the high pressure Pd are provided, and the thickness T of the vane 24 is set to the thickness determined by the equation I. The thickness T of the vane 24 is made thicker, the pressure in the back pressure chamber 25 is decreased, the pressing force on the back face of the vane 24 is made equal to that in the past, the leakage from the end face of the vane 24 is decreased by the increased quantity of the thickness T of the vane 24, and the volume efficiency is improved. The contact load between the vane 24 and a roller 8 is equal to that in the past, the volume efficiency is improved, thus the performance index can be improved.

公开(公告)号：JPH03271592A

公开(公告)日：1991-12-03

申请号：JP7046790

申请日：1990-03-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： YOSHIMURA TAKAO ,  MORITA ICHIRO ,  OGAWARA HIDEJI

IPC: F04C27/00 ,  F04C29/00

Abstract: PURPOSE:To improve the volumetric efficiency and reduce the leakage loss, and while restrict a flow-in quantity of the lubricating oil divolved in the refrigerant at minimum by providing channels, which consists of a communicating part for communicating with the inner peripheral side of a roller and multiple closed parts, of which sectional area is reduced as it leaves from the communicating part, in end faces of the roller. CONSTITUTION:In channels 20 - 27 on an end face 19a of a roller 19, the hydraulic force is generated at parts, of which sectional area is reduced, by the lubricating oil 18 flowing from communicating parts 20a - 27a against the flowing direction of the lubricating oil 18 among closed parts 20b - 27b, 20c - 27c, 20d - 27d, 20e - 27e, 20f - 27f. For example, the hydraulic force is generated at the close parts 20e, 20f in the channel 20. Namely, the hydraulic force is generated at two closed parts in all channels 20 - 27, and generating positions of the hydraulic force are dispersed over the end face 19a. In channels on the opposite end face, the hydraulic force is generated at two closed parts of all channels similarly, and the generating positions of the hydraulic force are formed in symmetry on both the endfaces to take a balance of the hydraulic force.

公开(公告)号：JPH03217691A

公开(公告)日：1991-09-25

申请号：JP1141890

申请日：1990-01-19

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGAWARA HIDEJI ,  YOSHIMURA TAKAO ,  MORITA ICHIRO

IPC: F04C23/02

Abstract: PURPOSE:To reduce mechanical vibration by providing a balancer having its center of gravity in the antieccentric side of the eccentric shaft of a shaft, fixed to the eccentric shaft or the shaft near the eccentric shaft, and housed in the circular groove of a roller. CONSTITUTION:A roller 22 furnishes groove 22a at the inner circumference. A shaft 23 is composed of a main shaft 23, an auxiliary shaft 23b, and an eccentric shaft member 23c. To the auxiliary shaft 23b near the eccentric shaft member 23c, a balancer 24 eccentric in the reverse direction to the eccentric shaft is fixed. And the balancer 24 is housed in the circular groove 22a. The eccentric weight eccentric to the eccentric shaft member 23c can be reduced, and the center of gravity of the eccentric weight can be approached to the shaft rotating shaft. In such a way, the mechanical vibration can be reduced.

公开(公告)号：JPH03217688A

公开(公告)日：1991-09-25

申请号：JP1141790

申请日：1990-01-19

Applicant: MATSUSHITA REFRIGERATION

Inventor： MORITA ICHIRO ,  YOSHIMURA TAKAO ,  OGAWARA HIDEJI

IPC: F04C18/356

Abstract: PURPOSE:To reduce a sliding loss between a shaft and bearings, and a leaking loss between a roller and bearings, by providing members to generate a magnetic force at one side either to the inside of a main bearing and an auxiliary bearing, or to the whole outer periphery of a main shaft and an auxiliary shaft, and providing superconductive members at the other side. CONSTITUTION:A magnet 19a is installed to a main bearing 7, while a magnet 19b is installed to an auxiliary bearing 8. Both magnets are installed in the scope at least 120 deg. to 180 deg., and 300 deg. to 360 deg. in the angle in the circumferential direction in the rotating direction of a shaft 3 from a vane 6. A superconductive member 21a is installed to a main shaft 3a, while a superconductive member 21b is installed to an auxiliary shaft 3b, and both members are opposed to the magnets 19a and 19b respectively. Since a fluid lubricating condition is generated between the shaft 3 and both bearings 7 and 8 in such a way, the sliding loss between the shaft 3 and the bearings 7 and 8 can be reduced. And the leaking loss from between a roller 5 and the bearings 7 and 8 is reduced to improve the compression efficiency.

公开(公告)号：JPH02191895A

公开(公告)日：1990-07-27

申请号：JP1233989

申请日：1989-01-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGAWARA HIDEJI ,  YOSHIMURA TAKAO ,  MORITA ICHIRO

IPC: F04C18/356

Abstract: PURPOSE:To improve reliability and performance with vaporized refrigerant gas in a back pressure chamber evacuated to a low pressure side by providing a communica tion path connecting an upper part of the back pressure chamber to communicate with a suction chamber or a suction passage and a suction pipe or the like. CONSTITUTION:When a pressure in a back pressure chamber 20 is decreased from a high pressure to an intermediate pressure and/or even when refrigerant gas is generat ed in the back pressure chamber 20 by stirring action by reciprocating motion of a vane 6, the gas is removed to a low pressure side by a passage 21 provided in an upper part of the back pressure chamber 20, and the refrigerant gas in the back pres sure chamber 20 is prevented from infiltrating between the vane 6 and a vane groove 19a. Consequently, lubrication is surely performed between the vane 6 and the vane groove 19a, and reliability is improved by eliminating wearing and seizure. While by improving seal performance by lubricating oil 18, because leakage about the vane 6 between the back pressure chamber 20 and compression and suction chambers 11b and 11a is decreased, even when the refrigerant gas is evacuated by using the communi cation path 21, volumetric efficiency and be improved by decreasing altogether a leakage amount to not more than the conventional value.

公开(公告)号：JPH02191894A

公开(公告)日：1990-07-27

申请号：JP1233889

申请日：1989-01-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： MORITA ICHIRO ,  YOSHIMURA TAKAO ,  OGAWARA HIDEJI

IPC: F04C29/02 ,  F04C18/356

Abstract: PURPOSE:To contrive the improvement of efficiency with seal performance improved between a vane and a cylinder by providing an oil reservoir part and a supply oil passage opening its one end to the oil reservoir part in a compression part side surface in a groove of the cylinder and the other end to lubricating oil in a closed casing. CONSTITUTION:For supply of oil to a sliding part between a vane 7 and a cylinder 4, because the lubricating oil 18 is always accumulated in an oil reservoir part 20 and supplied through a supply oil passage 21, seal performance is improved between the vane 6 and the cylinder 4 especially in a side of a compression chamber 11b, decreasing a leakage amount between the compression chamber 11b and a back pressure chamber 13. Especially in the latter half of compression, excessive compression is generated, even when a differential pressure is increased between the back pressure chamber 13 and the compression chamber 11b as compared with when a high pressure is generated in the back pressure chamber 13, the seal performance is ensured by continually supplying the lubricating oil 18 to a clearance between the cylinder 4 and the vane 6. While the oil reservoir part 20 is provided with a suitable seal distance between the compression chamber 11b and the back pressure chamber 13, and the improvement can be contrived of reliability eliminating improper lubrication between the vane 6 and the cylinder 4.

公开(公告)号：JPH02130290A

公开(公告)日：1990-05-18

申请号：JP28618988

申请日：1988-11-11

Applicant: MATSUSHITA REFRIGERATION

Inventor： YOSHIMURA TAKAO ,  MORITA ICHIRO ,  OGAWARA HIDEJI

IPC: F04C29/02 ,  F04C18/356

Abstract: PURPOSE:To improve performance and reliability by forming a communication passage whose one edge communicates to a back pressure chamber and the other edge intermittently communicates to a compression chamber, accompanied with the eccentric revolution of a rotor. CONSTITUTION:A back pressure chamber 20 is formed on the back surface of a vane 6, and a communication passage 21 through which the first opened hole 21a communicates to the back pressure chamber 20 and the second opened hole 21b intermittently communicates to a compression chamber 11b, accompanied with the eccentric revolution of a roller 5, is formed. With such constitution, if the back pressure chamber 20 communicates to the compression chamber 11b in the compression cycle, the coolant in the back pressure chamber 20 and lubricating oil flow out, and the pressure in the back pressure chamber 20 lowers and the fresh lubricating oil is supplied into the communication division. In particular, by the communication at the bottom dead center position where the capacity of the back pressure chamber 20 and the compression chamber 11b is largest, the pressure lowers from the bottom dead center to the top dead center, and the compression torque can be reduced, and the lubricating oil in the back pressure chamber 20 can be replaced little by little, and reliability can be improved.

公开(公告)号：JPH01170786A

公开(公告)日：1989-07-05

申请号：JP33084687

申请日：1987-12-25

Applicant: MATSUSHITA REFRIGERATION

Inventor： OGAWARA HIDEJI

IPC: F04C29/02

Abstract: PURPOSE:To supply the optimum quantity of lubricating oil by providing superconductive coils disposed in the vicinity of an oil feed pipe of a pressure supply portion, a pair of electrodes corresponding to the coils and a d.c. power supply and adding alkali metallic salt in the lubricating oil. CONSTITUTION:In an oil feed mechanism 19 of a compressor, lubricating oil 24 in an oil feed pipe 20 is ionized by positive and negative electrodes 22a, 22b so that an electric current flows from the electrode 22a to the electrode 22b. On the other hand, a strong magnetic flux is generated from a superconductive coil 21a to a superconductive coil 21b. Lorentz's force is generated by the above current and magnetic flux, so that the ionized lubricating oil 24 is moved to a sub-bearing 8 and supplied to the sub-bearing 8. After that, the oil lubricates each lubricating portion and returns to the bottom portion of a closed case 1. As the flow rate of the lubricating oil 24 changes with a change of Lorentz's force, the flow rate can be controlled by controlling the electric current flowing through the superconductive coils 21a, 21b, besides it can be controlled by controlling the voltage of the electrodes 22a, 22b. Accordingly, the optimum oil supply quantity can be attained during operation under any condition of rotational frequency and pressure.