TH27405B - Spiral compressor - Google Patents

Abstract

DC60 (27/05/46) The lubrication path (50) leading to the pressing contact surfaces of the stationary and orbital volute compressors (21, 22) acts as a channel through the pressure inlet. The level is also high when the difference between the pressure The high and low pressure levels are very high, in other words, when the pressure inlet is blocked. High In conditions where the high-low pressure difference is small, refrigeration lubricant is delivered to the pressed contact surface via a low pressure clearance (S1) inside the condensing housing. The pressure applied to the orbiting volute compressors (22) is closer to the stationary volute presses (21), and the structure for preventing degradation is simple, so it not only reduces Not only cost, but also prevent the occurrence of malfunctions The lubrication path (50) leading to the pressed contact surfaces of the stationary and orbital volute compressors (21, 22) also serves as a high pressure inlet channel. Pressure The high and low pressure levels are very high, in other words, when the pressure inlet is blocked. High In conditions where the high-low pressure difference is small, refrigerant lubricant is delivered to the pressed contact surface via a low pressure clearance (S1) inside the housing for It controls the pressure applied to the orbiting volute compressors (22) close to the stationary volute compressors (21), and the structure for preventing degradation is simple, so not only This reduces not only costs but also prevents misoperation.

Claims (3)

1. The spiral compressor is assembled with a housing. (10) contained by a compression mechanism (20) consisting of a bottom compression unit Stationary and orbital shells (21, 22) with coiled plates Each Involute Each contact surface is pressed in an axial direction and the drive mechanism (30) is connected via the drive shaft (34) to the spiral compression unit that As mentioned above, the aforementioned volute compressors include: a contact surface lubrication path (50) formed in an orbital volute unit (22). Such as to make contact with such a pressed contact surface from the main lubrication path (36) formed in the aforementioned drive shaft (34), where the pressed contact surface lubrication path (50 These include: the first channel (50a) which contacts the aforementioned contact surface from the inside of the orbiting clamshell unit (22), the second channel (50a) which contacts the The pressed contact surface passes through the low pressure clearance (s1) of the aforementioned case (10), and the lubrication control mechanism (60) which opens the said channel one (50a) and closes the channel. The second way (50b) is when the difference between the high pressure and the low pressure inside the housing (10) is greater than the pre-set value. Front And which closes the first (50a) channel and opens the second (50b) when the aforementioned high-low pressure difference is equal to or less than the aforementioned preset value. 2. The volute compressor of claim 1, where: the aforementioned pressurized contact surface lubrication route (50) is composed of the main pass-through channel (51), which has been formed inside the unit. Such orbiting (22) spiral compresses in such an open state. Exit to the side of the aforementioned primary lubrication path (32) and onto the side of the aforementioned low pressure clearance (S1), the first secondary intersection channel (52) which is in contact with the aforementioned pressed contact surface Of such spiral compressors (21, 22) from the aforementioned primary passageway (51) and the second secondary intersection channel (53), which is in contact with such low pressure space (S1) from The aforementioned main passageway (51), the aforementioned lubrication control mechanism (60), consists of a valve assembly (61), which is supplied. It is prepared so that it moves within the channel through the aforementioned main body (51), and the aforementioned tongue piece (61) moves to the first position. When the pressure difference is high - low. Greater than the aforementioned preset This caused the first (52) to be opened and the second (53) of the second (53) intersection had been closed. And such a moving tongue (61) piece To the second position When the aforementioned high-low pressure difference is equal to or less than that predetermined value, the first secondary junction (52) channel is closed. And the secondary intersection at the said (53) has been opened. 3. The spiral compressor of claim 2, where: the aforementioned lubrication control mechanism (60) consists of a time-acting (62) path for the constant action on such valve parts (61). Go to that second position within the channel. The main passageway (51), and the constant force of the constant course of action (62) is defined in The manner in which the said tongue piece (61) is maintained at the said position. When the difference The above high-low pressure is equal to or less than that preset value. And which allows the said piece of tongue (61) to move to that first position When the aforementioned high-low pressure difference is greater than the Such predetermined