CN107013456B - Sliding vane of rotary vane compressor and rotary vane compressor - Google Patents

Sliding vane of rotary vane compressor and rotary vane compressor Download PDF

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Publication number
CN107013456B
CN107013456B CN201710317669.7A CN201710317669A CN107013456B CN 107013456 B CN107013456 B CN 107013456B CN 201710317669 A CN201710317669 A CN 201710317669A CN 107013456 B CN107013456 B CN 107013456B
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China
Prior art keywords
oil
groove
flange
pressure
main shaft
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CN201710317669.7A
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CN107013456A (en
Inventor
吴飞
万鹏凯
罗发游
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00Rotary-piston machines or pumps
    • F04C2/30Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3446Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
    • F04C2/3447Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface the vanes having the form of rollers, slippers or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet

Abstract

The invention provides a sliding sheet of a rotary vane compressor and the rotary vane compressor, wherein the sliding sheet comprises a first side surface (71) and a second side surface (72), the first side surface (71) and the second side surface (72) are arranged oppositely, a side oil groove (73) capable of containing high-pressure oil is formed in the second side surface (72), and the side oil groove (73) is formed from the second side surface (72) in a direction towards the first side surface (71) and does not penetrate through the first side surface (71). According to the invention, high-pressure oil can be supplemented through the side oil groove, so that pressure perpendicular to the sliding sheet is formed on the second side of the sliding sheet, and the biasing force generated by the pressure of the high-pressure cavity and the low-pressure cavity on the two sides of the front end of the sliding sheet is balanced or reduced, so that the moment is balanced as much as possible, and the sliding sheet is prevented from being in line contact with the sliding sheet groove opening due to the biasing force to generate abnormal abrasion and form surface contact, the service life of the sliding sheet is prolonged to a certain extent, and the friction power consumption of the sliding sheet is reduced.

Description

Sliding vane of rotary vane compressor and rotary vane compressor
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to a sliding vane of a rotary vane compressor and the rotary vane compressor.
Background
Present traditional rotary vane compressor has 3 above gleitbretters usually, because the gleitbretter can receive along with the main shaft rotation in-process by gleitbretter back pressure and the high low-pressure chamber differential pressure effect in gleitbretter both sides, lead to the gleitbretter great biasing force (the directional low pressure side of direction) to appear in rotation process, make the friction by-product of this position produce great consumption, be unfavorable for the promotion of compressor performance, and also unreasonable to the atress of gleitbretter, especially when great or the operating mode is heavier to the eccentric quantity, can produce the gleitbretter wearing and tearing inefficacy even, thereby lead to the compressor unusual.
The sliding vane of the rotary vane compressor and the rotary vane compressor are researched and designed because the rotary vane compressor in the prior art has the technical problems of sliding vane abrasion and even failure caused by overlarge biasing force borne by the sliding vane.
Disclosure of Invention
Therefore, the present invention is directed to overcome the defect of the prior art that the vane-type compressor has a large biasing force applied to the vane, and to provide a vane of the vane-type compressor and the vane-type compressor.
The invention provides a sliding vane of a rotary vane compressor, which comprises: the oil tank comprises a first side surface and a second side surface, wherein the first side surface and the second side surface are arranged in a reverse manner, a side oil groove capable of containing high-pressure oil is formed in the second side surface, and the side oil groove is formed in the direction from the second side surface to the first side surface and does not penetrate through the first side surface.
Preferably, the slide sheet includes a head portion and a tail portion which are opposite to each other, and the side oil groove is opened on the second side surface and is close to the tail portion and away from the head portion.
Preferably, the side oil groove is a rectangular oil groove, the rectangular oil groove with the minimum interval between the tails is a first preset distance, and the minimum interval between the heads is a second preset distance, and the second preset distance > the first preset distance.
Preferably, the sliding sheet comprises an upper end surface and a lower end surface which are arranged in a back-to-back manner, and a first oil groove channel is further arranged on the second side surface, one end of the first oil groove channel is communicated to the side surface oil groove, and the other end of the first oil groove channel extends to the lower end surface.
Preferably, a second oil groove channel with one end communicated to the side oil groove and the other end extending to the upper end face is further arranged on the second side face.
The present invention also provides a rotary vane compressor, comprising:
A main shaft; a cylinder; an upper flange; a lower flange;
A cylinder cavity formed between the main shaft and the cylinder;
The sliding sheet groove is formed in the main shaft;
The sliding piece is accommodated in the sliding piece groove, the first side face is located on the upstream side of the rotation direction of the spindle, and the second side face is located on the downstream side of the rotation direction.
Preferably, when the slide comprises a head portion and a tail portion, the head portion is located in the cylinder chamber and the tail portion is located in the slide groove.
Preferably, when the sliding piece includes an upper end surface and a lower end surface, the lower end surface is located in the lower portion of the sliding piece in the axial direction of the spindle, and the upper end surface is located in the upper portion of the sliding piece in the axial direction of the spindle.
Preferably, the lower end surface is connected to the lower flange, and the lower flange is further provided with a first oil groove which can be communicated with the first oil groove channel to supply oil to the first oil groove channel.
Preferably, the lower flange further comprises a first accommodating hole through which the main shaft can pass, and a first flange back pressure groove is further arranged on the periphery of the first accommodating hole and can be communicated with the first oil groove through the slide sheet groove.
Preferably, a main shaft oil hole extending along the axial direction of the main shaft is formed in the main shaft, and a first radial oil hole having one end communicated with the main shaft oil hole and the other end communicated with the first flange back pressure groove is further formed in the main shaft along the radial direction at a position corresponding to the lower flange.
Preferably, the upper end surface is connected to the upper flange, and a second oil groove capable of communicating with the second oil groove channel to supply oil to the second oil groove channel is further provided on the upper flange.
Preferably, the upper flange further comprises a second accommodating hole through which the main shaft can pass, and a second flange back pressure groove is further arranged on the periphery of the second accommodating hole and can be communicated with the second oil groove through the slide sheet groove.
Preferably, when the spindle oil hole is included, a second radial oil hole is further radially opened at a position on the spindle corresponding to the upper flange, wherein one end of the second radial oil hole is communicated with the spindle oil hole, and the other end of the second radial oil hole is communicated with the second flange back pressure groove.
Preferably, an oil chamber is included in which oil pressure is equal to discharge pressure of the compressor, and the high-pressure oil is from the oil chamber.
The sliding vane of the rotary vane compressor and the rotary vane compressor provided by the invention have the following beneficial effects:
1. According to the sliding vane of the rotary vane compressor and the rotary vane compressor, the side oil grooves which are arranged towards the first side surface but do not penetrate through the first side surface are formed in the second side surface of the first side surface and the second side surface, which are arranged oppositely, of the sliding vane, high-pressure oil is contained in the side oil grooves, and high-pressure oil can be supplemented through the side oil grooves, so that pressure perpendicular to the sliding vane can be formed on the second side surface of the sliding vane, and therefore the bias force generated by the front end of the sliding vane due to the pressure of high-pressure and low-pressure cavities on two sides is balanced or reduced, the moment is balanced as far as possible, the sliding vane is prevented from being in line contact with the sliding vane groove opening due to the bias force to generate abnormal abrasion, surface contact is formed, the service life of the sliding vane is prolonged to a certain extent;
2. According to the sliding vane of the rotary vane compressor and the rotary vane compressor, the side oil groove is arranged at the position close to the tail part and far away from the head part, the tail part is usually positioned in the sliding vane groove of the compressor, the head part is positioned in the cylinder cavity, and the position generated by pressure difference is positioned at the head part, so that the side oil groove is arranged at the position close to the tail part and can interact with the pressure of the head part as far as possible to the greatest extent, moment balance is generated at the contact position of the sliding vane and the front end of the sliding vane groove, the excessive friction loss caused by the prior contact of the tip is prevented, and the service life of the sliding vane is prolonged to the greatest extent;
3. According to the sliding vane of the rotary vane compressor and the rotary vane compressor, the first oil groove channel and/or the second oil groove channel communicated with the side oil groove are/is formed on the lower end surface and/or the upper end surface, oil can be supplied to the side oil groove through the first oil groove channel and/or the second oil groove channel, the preferred oil supply mode is realized, high-pressure oil can be supplied, high-pressure oil pressure is generated, and conditions are provided for reducing and preventing bias force and friction loss;
4. According to the sliding vane of the rotary vane compressor and the rotary vane compressor, the first oil groove and/or the second oil groove are/is arranged on the lower flange and/or the upper flange, and oil can be supplied to the first oil groove channel and/or the second oil groove channel on the lower end surface and/or the upper end surface of the sliding vane along the axial direction through the first oil groove and/or the second oil groove, so that the preferred oil supply mode is realized, the supply of high-pressure oil can be realized, the action of high-pressure oil pressure can be generated, and conditions are provided for reducing and preventing bias force and friction loss;
5. The sliding vane of the rotary vane compressor and the rotary vane compressor of the invention have the structural form that the lower flange and/or the upper flange are/is provided with the first and/or the second flange back pressure groove, and the first and/or the second flange back pressure groove is/are respectively communicated to the first and/or the second oil groove through the sliding vane groove, so that oil can be finally communicated to the first and/or the second oil groove through the sliding vane groove by the first and/or the second flange back pressure groove, the oil is conveyed and supplied to the side oil groove of the sliding vane from the lower and/or the upper flange, and the preferable oil supply mode is also provided, the supply of high-pressure oil can be realized, the action of high-pressure oil pressure can be generated, and the conditions are provided for reducing and preventing biasing force and friction loss;
6. The sliding vane of the rotary vane compressor and the rotary vane compressor of the invention can transport and supply high-pressure oil in the main shaft oil hole to the first and/or second flange back pressure groove on the lower flange and/or the upper flange through the first and/or second radial oil hole by the way of arranging the main shaft oil hole on the main shaft and arranging the first and/or second radial oil hole on the main shaft, thereby completing the transportation and supply of the oil from the main shaft to the lower and/or upper flange and further to the side oil groove of the sliding vane.
Drawings
Fig. 1 is a schematic perspective view of a vane-type compressor according to an embodiment 1 of the present invention;
Fig. 2 is a schematic perspective view of embodiment 2 of a vane of the vane-type compressor according to the present invention;
Fig. 3 is a schematic perspective view of the main shaft, cylinder and upper and lower flange portions of the vane rotary compressor of the present invention;
FIG. 4 is a schematic top view of the rotary vane compressor of the present invention with the upper flange removed;
Fig. 5 is a perspective view illustrating a main shaft part of the vane rotary compressor according to the present invention;
Fig. 6 is a perspective view of a lower flange portion of the rotary vane compressor of the present invention;
Fig. 7 is a perspective view of an upper flange portion of the vane rotary compressor of the present invention;
Fig. 8 is a force vector analysis diagram of a vane portion of the vane rotary compressor according to the present invention.
The reference numbers in the figures denote:
1-main shaft, 11-main shaft oil hole, 12-first radial oil hole, 13-second radial oil hole, 2-cylinder, 3-upper flange, 31-second oil groove, 32-second accommodating hole, 33-second flange back pressure groove, 4-lower flange, 41-first oil groove, 42-first accommodating hole, 43-first flange back pressure groove, 5-cylinder cavity, 51-high pressure cavity, 52-low pressure cavity, 6-slide sheet groove, 7-slide sheet, 71-first side surface, 72-second side surface, 73-side oil groove, 74-head, 75-tail, 76-lower end surface, 77-first oil groove channel, 78-upper end surface, 79-second oil groove channel.
Detailed Description
Example 1
As shown in fig. 1, the present invention provides a vane 7 of a rotary vane compressor, which includes: the oil tank comprises a first side surface 71 and a second side surface 72, wherein the first side surface 71 and the second side surface 72 are arranged oppositely, a side surface oil groove 73 capable of containing high-pressure oil is formed in the second side surface 72, and the side surface oil groove 73 is formed from the second side surface 72 in a direction towards the first side surface 71 and does not penetrate through the first side surface 71.
The side oil grooves which are not communicated with the first side face are formed in the second side face of the sliding piece in the first side face and the second side face, which are arranged oppositely, of the sliding piece, high-pressure oil is contained in the side oil grooves, high-pressure oil can be supplemented through the side oil grooves, and therefore pressure perpendicular to the sliding piece can be formed on the second side face of the sliding piece, biasing force generated by the pressure of the high-pressure and low-pressure cavities on the two sides of the front end of the sliding piece is balanced or reduced, torque is balanced as far as possible, abnormal abrasion caused by the fact that the sliding piece is in line contact with a sliding piece groove opening due to the biasing force is avoided, surface contact is formed, the service life of the sliding piece is prolonged to a certain extent, and friction power consumption of the sliding.
Preferably, the sliding piece 7 includes a head portion 74 and a tail portion 75 which are opposite to each other, and the side oil groove 73 is opened on the second side 72 and is close to the tail portion 75 and is far from the head portion 74. The side oil grooves are arranged at the positions close to the tail part and far away from the head part, the tail part is usually positioned in a sliding sheet groove of the compressor, the head part is positioned in a cylinder cavity, and the position generated by pressure difference is positioned at the head part, so that the side oil grooves are arranged at the position close to the tail part and can interact with the pressure of the head part to the greatest extent, moment balance is generated at the contact position of the sliding sheet and the front end of the sliding sheet groove, the phenomenon that the friction loss is overlarge due to the fact that the tip end is contacted first is prevented, and the service life of the sliding sheet is prolonged to.
Preferably, the side oil groove 73 is a rectangular oil groove, the minimum distance between the side oil groove and the tail portion 75 is a first preset distance, the minimum distance between the side oil groove and the head portion 74 is a second preset distance, and the second preset distance > the first preset distance. The rectangular oil groove can be effectively close to the tail part of the sliding vane as far as possible and relatively far away from the head part of the sliding vane by setting the second preset distance to be larger than the first preset distance, so that the moment generated by pressure difference is balanced, the biasing force is reduced, and the friction loss is reduced.
Preferably, the sliding vane includes an upper end surface 75 and a lower end surface 76 which are opposite to each other, and a first oil groove channel 77 is further disposed on the second side surface 72, and one end of the first oil groove channel is communicated to the side oil groove 73, and the other end of the first oil groove channel extends to the lower end surface 76. The first oil groove channel communicated with the side oil groove is formed in the lower end face of the sliding piece, oil can be supplied to the side oil groove through the first oil groove channel, the sliding piece is an optimal oil supply mode, high-pressure oil can be supplied, high-pressure oil can be generated, and conditions are provided for reducing and preventing offset force and friction loss.
Example 2
As shown in fig. 2, this embodiment is a further improvement made on the basis of embodiment 1, and belongs to a means added on the basis of the technical solution of embodiment 1, and preferably, a second oil groove channel 79 is further provided on the second side surface 72, one end of which is communicated to the side oil groove 73, and the other end of which extends to the upper end surface 78. Set up the second oil groove passageway that is linked together with the side oil groove through the up end at the gleitbretter, can realize the oil feed to the side oil groove through this second oil groove passageway, combine first oil groove can carry out the fuel feeding to the side oil groove simultaneously through two oil grooves, also can carry out the fuel feeding to the side oil groove alone through first or second oil groove, be an optimal fuel feeding mode, can realize the supply of high-pressure oil and produce the effect of high pressure oil pressure, provide the condition for reducing and preventing biasing power and frictional loss.
Example 3
As shown in fig. 3 to 7, the present invention also provides a rotary vane compressor, which includes: a main shaft 1; a cylinder 2; an upper flange 3; a lower flange 4; a cylinder chamber 5 formed between the main shaft 1 and the cylinder 2; a slide groove 6 provided in the main shaft 1 (preferably, 3 or more slide grooves);
The spindle further comprises the sliding piece 7 (one sliding piece 7 is correspondingly arranged in each sliding piece groove 6) which is accommodated in each sliding piece groove 6, the first side face 71 is located on the upstream side of the rotation direction of the spindle 1, and the second side face 72 is located on the downstream side of the rotation direction (as shown in fig. 8, the spindle rotates clockwise, the upstream side of the rotation direction is the left side of the sliding piece 7, and the downstream side of the rotation direction is the right side of the sliding piece 7). That is, the vane 7 further includes a first side surface 71 located on the upstream side of rotation and a second side surface 72 located on the downstream side of rotation along the rotation direction of the spindle 1, and the second side surface 72 is provided with a side surface oil groove 73 capable of containing high pressure oil.
Since the first side surface at the upstream side of the main shaft rotation direction corresponds to a low pressure cavity or a suction cavity in the cylinder cavity, the second side surface at the downstream side of the main shaft rotation direction corresponds to a high pressure cavity or a discharge cavity in the cylinder cavity, and the pressure difference in the cylinder cavity is directed from the high pressure cavity to the low pressure cavity, it can be seen from fig. 4 that the left upper end of the slide sheet at the upper end is in line contact with the slide sheet groove at the position where the stress is the largest along the main shaft axis direction, and the stress concentration is very easy to generate, so as to balance the bias force here, by opening a side surface oil groove towards the first side surface on the first side surface of the slide sheet at the upstream side of the main shaft rotation direction and on the second side surface at the downstream side, and accommodating high pressure oil in the side surface oil groove, high pressure oil can be supplemented through the side surface oil groove, so that the pressure perpendicular to the slide sheet can be formed on the second side surface of the slide sheet, the force of bias generated by the front end of the sliding piece due to the pressure of the high-pressure cavity and the low-pressure cavity on the two sides is balanced or reduced, so that the moment is balanced as much as possible, the sliding piece is prevented from being in line contact with the sliding piece notch due to the bias force to generate abnormal abrasion, surface contact is formed, the service life of the sliding piece is prolonged to a certain extent, and meanwhile, the friction power consumption is reduced.
The side oil grooves 73 are opened from the second side surface 72 in a direction toward the first side surface 71, and do not penetrate the first side surface 71. This is to ensure that the high-pressure oil is stored in the side oil groove without leaking to the first side (pressure leakage) and without exerting any pressure.
As shown in fig. 4, preferably, when the slide 7 includes a head portion 74 and a tail portion 75, the head portion 74 is located in the cylinder chamber 5, and the tail portion 75 is located in the slide groove 6. Can guarantee like this through head and cylinder inner wall contact and separate into the cylinder chamber and inhale air, exhaust and compression chamber (preferably contact all the time and prevent gas pressure leakage), set up through the afterbody and can prevent effectively that the gleitbretter from deviating from and leading to the unable normal operating of compressor from the gleitbretter groove in the gleitbretter groove. Further preferably, the slide 7 includes a head portion 74 always located in the cylinder chamber 5, and a tail portion 75 always located in the slide groove 6 (so as to ensure smooth movement of the slide), and the side oil groove 73 is opened on the second side 72 and is close to the tail portion 75 and far from the head portion 74.
Preferably, when the sliding piece 7 includes an upper end surface 78 and a lower end surface 76, the lower end surface 76 is located at a lower portion of the sliding piece 7 in the axial direction of the spindle (preferably, the lower end surface is perpendicular to the axis of the spindle), and the upper end surface 78 is located at an upper portion of the sliding piece 7 in the axial direction of the spindle (preferably, the upper end surface is also perpendicular to the axis of the spindle). This is the specific location and configuration of the upper and lower end faces of the slider of the present invention.
Example 4
As shown in fig. 6, this embodiment is a further improvement on embodiment 3, and preferably, the lower end face 76 is connected to the lower flange 4, and a first oil groove 41 (preferably an arc-shaped oil groove) capable of communicating with the first oil groove channel 77 to supply oil to the first oil groove channel 77 is further provided on the lower flange 4. The first arc-shaped oil groove is formed in the upper end face of the lower flange, is only a section of arc groove section and does not form an annular structure; the first arcuate oil groove is in communication with the vane groove when the main shaft is rotated to the respective positions shown in fig. 4 and 6.
Through the structural style that sets up first oil groove on the flange down, can carry out the fuel feeding to the first oil groove passageway of gleitbretter lower extreme face along axial direction through this first oil groove, be an optimal fuel feeding mode, can realize the supply of high-pressure oil and produce the effect of high-pressure oil pressure, provide the condition for reducing and preventing biasing power and frictional loss.
Preferably, the lower flange 4 further includes a first receiving hole 42 capable of receiving the main shaft 1 therethrough, and a first flange back pressure groove 43 is further disposed on an outer periphery of the first receiving hole 42, and the first flange back pressure groove 43 is capable of communicating with the first oil groove 41 through the vane groove 6. The lower flange is provided with the first flange back pressure groove, the first flange back pressure groove is communicated to the first oil groove through the sliding sheet groove, oil can be finally communicated to the first oil groove through the first flange back pressure groove, and oil is conveyed and supplied to the side oil grooves of the sliding sheet from the lower flange and/or the upper flange.
Preferably, a main shaft oil hole 11 extending along the axial direction of the main shaft is formed in the main shaft 1, and a first radial oil hole 12 having one end communicating with the main shaft oil hole 11 and the other end communicating with the first flange back pressure groove 43 is further formed in the main shaft 11 at a position corresponding to the lower flange 4 along the radial direction. The main shaft is provided with the main shaft oil hole and the main shaft is provided with the first radial oil hole, so that high-pressure oil in the main shaft oil hole can be conveyed and supplied to the first flange back pressure groove on the lower flange through the first radial oil hole, and the oil is conveyed and supplied to the lower flange from the main shaft and further conveyed to the side oil groove of the sliding sheet.
Example 5
As shown in fig. 7, this embodiment is a further improvement or alternative mode made on the basis of embodiment 4, and preferably, the upper end surface 78 is connected to the upper flange 3, and a second oil groove 31 (preferably, an arc-shaped oil groove) capable of communicating with the second oil groove channel 79 to supply oil to the second oil groove channel 79 is further provided on the upper flange 3.
The second arc-shaped oil groove is formed in the lower end face of the upper flange, is only a section of arc groove section and does not form an annular structure; the second arcuate oil groove communicates with the vane groove when the main shaft is rotated to the respective positions shown in fig. 4 and 7.
Through the structural style that sets up the second oil groove on last flange, can carry out the fuel feeding to the second oil groove passageway of slide upper end face along axial direction through this second oil groove, be an optimal fuel feeding mode, can realize the supply of high-pressure oil and produce the effect of high-pressure oil pressure, provide the condition for reducing and preventing biasing power and frictional loss.
Preferably, the upper flange 3 further includes a second receiving hole 32 capable of receiving the main shaft 1 therethrough, and a second flange back pressure groove 33 is further provided at a periphery (i.e., an outer periphery) of the second receiving hole 32, and the second flange back pressure groove 33 is capable of communicating with the second oil groove 31 through the vane groove 6. Through the structural style that sets up second flange backpressure groove on last flange to make second flange backpressure groove communicate to the second oil groove through the sliding vane groove respectively, can communicate oil to the second oil groove through this second flange backpressure groove via the sliding vane groove finally in, accomplish from the side oil groove of last flange transportation supply to the sliding vane with oil, also be an optimal fuel feeding mode, can realize the supply of high-pressure oil and produce the effect of high-pressure oil pressure, provide the condition for reducing and preventing biasing power and frictional loss.
Preferably, when the main shaft oil hole 11 is included, a second radial oil hole 13 having one end communicating with the main shaft oil hole 11 and the other end communicating with the second flange back pressure groove 33 is further opened in the radial direction at a position corresponding to the upper flange 3 on the main shaft 1. The mode that the first radial oil hole is formed in the main shaft is adopted, high-pressure oil in the main shaft oil hole can be conveyed and supplied to the second flange back pressure groove on the upper flange through the second radial oil hole, so that the oil is conveyed and supplied to the upper flange from the main shaft and further conveyed to the side oil groove of the sliding sheet.
Preferably, an oil chamber is included, the oil pressure in the oil chamber is equal to the discharge pressure of the compressor, and the high-pressure oil comes from the oil chamber, namely the oil is high-pressure oil in the compressor. Through the mode, high-pressure oil in an oil chamber in the compressor shell can be utilized to convey the high-pressure oil to the position of the slip sheet in the air cylinder, so that the generation of the bias force of the slip sheet is effectively prevented, the bias force is reduced, the friction loss of the slip sheet is reduced, and the service life of the slip sheet or even the service life of the compressor is prolonged.
The invention solves the following technical problems
1. Providing a sliding sheet stress structure optimization mode;
2. The condition that the biasing force received by the slip sheet in the operation process of the slip sheet is overlarge is improved, so that the slip sheet is in surface contact with the notch of the slip sheet through line contact, the friction power consumption between the slip sheet and the slip sheet groove is reduced to a certain extent, the stress condition of the slip sheet is also improved, and the reliability of the slip sheet is improved.
Has the advantages that:
The invention provides an optimized structure for improving the stress of the side surface of a sliding vane, solves the problem of service life reduction caused by overlarge offset of the two side surfaces of the sliding vane, and reduces the power consumption between the sliding vane and a sliding vane groove, thereby improving the energy efficiency and the operation reliability of a sliding vane type compressor.
The invention is characterized in that a rectangular oil groove with a certain area is arranged at a specific position of the tail part of the side surface (high pressure side) of the sliding sheet, and an oil inlet channel is arranged; and an annular oil guide groove (the arrangement position needs to be set according to the working condition of the compressor) is arranged in the specific angle range of the end surface of the flange.
When the compressor pump body rotates to a specific angle (the sliding sheet is close to the position where the pressure difference force on the two sides is the largest), an oil inlet channel at the tail part of the sliding sheet can be communicated with an oil guide groove which is formed in the corresponding position of the flange in advance, so that high-pressure oil in the oil guide groove of the flange flows into an oil groove on the side face of the sliding sheet groove through the oil inlet channel, the force perpendicular to the sliding sheet can be formed at the tail part of the high-pressure side of the sliding sheet, the offset force generated due to the existence of high-low pressure cavities on the two sides at the front end of the sliding sheet is balanced, the sliding sheet is prevented from being in line contact with the sliding sheet groove opening due to offset to generate abnormal abrasion, the.
The tail part of the high-pressure side of the slip sheet is provided with a rectangular groove with a certain area and depth, and the lower end of the groove is provided with an oil inlet channel, as shown in figure 1; meanwhile, aiming at the rotation characteristic of the sliding vane machine, an annular flange back pressure groove for providing high-pressure lubricating oil for a main shaft sliding vane groove and an arc-shaped oil groove with a certain angle formed in the corresponding position are formed in the end face of the lower flange, as shown in fig. 6; an axial main shaft oil hole is formed at the lower end of the main shaft, and main shaft radial oil holes are formed at two sides of the central part of the main shaft, so that lubricating oil can enter the main shaft from the main shaft oil hole and flow out to the lower flange back pressure groove through the main shaft radial oil hole to provide back pressure for a sliding sheet in a main shaft sliding sheet groove, and the main shaft sliding sheet groove is particularly shown in fig. 3;
The matching of the sliding sheet and the lower flange mainly comprises the following two structures: the gleitbretter rotates and moves along with the main shaft in the gleitbretter groove, when the gleitbretter rotated specific angle (this angle need be formulated according to operating condition), the gleitbretter head because the effect of the differential pressure power and the head friction force in gleitbretter both sides face high-pressure chamber and low-pressure chamber for the biasing to the low pressure side direction can appear in the gleitbretter head. Meanwhile, due to the existence of the structure, the oil inlet channel at the lower part of the sliding piece is communicated with the arc-shaped oil groove at the end face of the lower flange, so that the frozen oil of the arc-shaped oil groove enters the rectangular oil groove at the side face of the sliding piece, the pressure of the frozen oil at the position is close to the exhaust pressure (high pressure), the other side of the frozen oil is medium-low pressure generated due to the existence of a gap, and the sliding piece at the angle generates pressure which is perpendicular to the sliding piece and points to the low pressure side at the tail part, so that the moment of the head and the tail of the sliding piece is balanced, a specific vector diagram can be seen in figure 8, a point p is a point with the maximum stress, namely a point with which the sliding piece rotates, F1 is the pressure difference between a high-pressure cavity and a low-pressure cavity in a cylinder cavity, M1 is the moment formed by the pressure difference, F2 is the high-pressure generated by the side oil groove improved by, the point o is the center of the rotating shaft and the arrow is the rotating direction, so that the sliding sheet is close to the sliding sheet groove, and abnormal abrasion between the sliding sheet and the tip of the sliding sheet groove due to offset is avoided, as shown in fig. 4.
And the high-pressure oil of the lower flange arc-shaped oil groove comes from the main shaft and is communicated with the flange arc-shaped groove through the main shaft sliding sheet groove when the main shaft rotates to a specific angle (the angle is the same as the specific angle), so that the high-pressure oil of the flange back-pressure groove enters the arc-shaped oil groove through the main shaft sliding sheet groove, and then the high-pressure oil is provided for the rectangular oil groove on the side surface of the sliding sheet. As shown in particular in fig. 6.
Because the most big offset force distance that receives of a section position gleitbretter head of gleitbretter extension length is the biggest, needs the afterbody to balance, this problem can not appear because the problem of extension length and operating mode in all the other positions basically, so set up of lower flange oil groove has only one section radian, after the gleitbretter rotated this section angle, lower part oil feed passageway and lower flange terminal surface disconnection to make the atress of gleitbretter return to normal.
Main oil circuit: the main shaft oil hole, the main shaft radial hole, the lower flange back pressure groove, the main shaft sliding sheet groove, the lower flange arc groove, the oil groove channel (sliding sheet side surface) and the sliding sheet side oil groove, and the whole oil circuit can be checked by an explosion diagram in figure 3.
The flange back pressure groove and the arc-shaped oil groove can be opened at the opposite position of the end surface of the upper flange simultaneously, and the sliding sheet can provide the oil pressure simultaneously! The sliding sheet abnormal abrasion problem of the sliding sheet machine can be solved more efficiently. See in particular fig. 2 and 7.
The shape of the oil groove on the side surface of the sliding sheet is not necessarily rectangular, and can also be formulated according to the actual stress condition;
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (14)

1. A sliding vane of a rotary vane compressor is characterized in that: the method comprises the following steps:
The oil tank comprises a first side surface (71) and a second side surface (72), wherein the first side surface (71) and the second side surface (72) are arranged oppositely, a side surface oil groove (73) capable of containing high-pressure oil is formed in the second side surface (72), the side surface oil groove (73) is formed from the second side surface (72) in a direction towards the first side surface (71) and does not penetrate through the first side surface (71);
The sliding sheet comprises an upper end face (78) and a lower end face (76) which are arranged in an opposite mode, a first oil groove channel (77) is further arranged on the second side face (72), one end of the first oil groove channel is communicated to the side oil groove (73), the other end of the first oil groove channel extends to the lower end face (76), and the lower end face is connected with a lower flange (4) of the rotary vane compressor.
2. The slider of claim 1, characterized in that: the slide sheet (7) comprises a head portion (74) and a tail portion (75) which are arranged oppositely, and the side oil groove (73) is formed in the second side face (72), is close to the tail portion (75) and is far away from the head portion (74).
3. The slider of claim 2, characterized in that: the side oil groove (73) is a rectangular oil groove, the minimum distance between the rectangular oil groove and the tail part (75) is a first preset distance, the minimum distance between the rectangular oil groove and the head part (74) is a second preset distance, and the second preset distance is larger than the first preset distance.
4. The slider of claim 1, characterized in that: and a second oil groove channel (79) with one end communicated to the side oil groove (73) and the other end extending to the upper end surface (78) is also arranged on the second side surface (72).
5. A rotary vane compressor characterized in that: the method comprises the following steps:
A main shaft (1); a cylinder (2); an upper flange (3); a lower flange (4);
A cylinder chamber (5) formed between the main shaft (1) and the cylinder (2);
A slide groove (6) which is provided on the main shaft (1);
Further comprising a slide (7) according to any of claims 1 to 4, said slide (7) being accommodated in said slide slot (6), said first side (71) being located upstream in a direction of rotation of said spindle (1) and said second side (72) being located downstream in said direction of rotation.
6. The rotary vane compressor as claimed in claim 5, wherein: when the slide (7) comprises a head portion (74) and a tail portion (75), the head portion (74) is located in the cylinder cavity (5) and the tail portion (75) is located in the slide groove (6).
7. Rotary vane compressor according to one of claims 5 to 6, characterized in that: when gleitbretter (7) include up end (78) and lower terminal surface (76), terminal surface (76) are located down the main shaft axis direction the lower part of gleitbretter (7), up end (78) are located the main shaft axis direction the upper portion of gleitbretter (7).
8. The rotary vane compressor as claimed in claim 7, wherein: the lower end face (76) is connected with the lower flange (4), and a first oil groove (41) which can be communicated with the first oil groove channel (77) to supply oil to the first oil groove channel (77) is further arranged on the lower flange (4).
9. The rotary vane compressor as claimed in claim 8, wherein: the lower flange (4) further comprises a first accommodating hole (42) which can accommodate the main shaft (1) to penetrate through, a first flange back pressure groove (43) is further formed in the periphery of the first accommodating hole (42), and the first flange back pressure groove (43) can be communicated with the first oil groove (41) through the sliding sheet groove (6).
10. The rotary vane compressor as claimed in claim 9, wherein: the main shaft (1) is internally provided with a main shaft oil hole (11) extending along the axial direction of the main shaft, and the main shaft (1) is further provided with a first radial oil hole (12) at a position corresponding to the lower flange (4) along the radial direction, wherein one end of the first radial oil hole is communicated with the main shaft oil hole (11), and the other end of the first radial oil hole is communicated with the first flange back pressure groove (43).
11. Rotary vane compressor according to one of claims 8 to 10, characterized in that: when a second oil groove channel (79) with one end communicated to the side oil groove (73) and the other end extending to the upper end surface (78) is further arranged on the second side surface (72):
The upper end face (78) is connected with the upper flange (3), and a second oil groove (31) which can be communicated with the second oil groove channel (79) to supply oil to the second oil groove channel (79) is further arranged on the upper flange (3).
12. The rotary vane compressor as claimed in claim 11, wherein: go up flange (3) still including holding second accommodation hole (32) that main shaft (1) passed from, and be in the periphery of second accommodation hole (32) still is provided with second flange back pressure groove (33), second flange back pressure groove (33) can pass through slide groove (6) with second oil groove (31) are linked together.
13. The rotary vane compressor as claimed in claim 12, wherein: when the spindle oil hole (11) is included, a second radial oil hole (13) is further formed in the position, corresponding to the upper flange (3), of the spindle (1) along the radial direction, wherein one end of the second radial oil hole is communicated with the spindle oil hole (11), and the other end of the second radial oil hole is communicated with the second flange back pressure groove (33).
14. Rotary vane compressor according to one of claims 5 to 6, characterized in that: the compressor comprises an oil chamber, wherein the oil pressure in the oil chamber is equal to the exhaust pressure of the compressor, and the high-pressure oil comes from the oil chamber.
CN201710317669.7A 2017-05-08 2017-05-08 Sliding vane of rotary vane compressor and rotary vane compressor Active CN107013456B (en)

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CN110966194B (en) * 2019-10-16 2020-11-24 珠海格力电器股份有限公司 Compressor and sliding vane compressor backpressure control structure
CN111794966A (en) * 2020-06-29 2020-10-20 珠海格力电器股份有限公司 Pump body subassembly, compressor and air conditioner
CN112324660A (en) * 2020-10-09 2021-02-05 珠海格力电器股份有限公司 Pump body subassembly, compressor and air conditioner

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JPH07189924A (en) * 1993-12-28 1995-07-28 Hitachi Ltd Rotary compressor
JP2004052675A (en) * 2002-07-19 2004-02-19 Seiko Instruments Inc Gas compressor
CN202510363U (en) * 2012-03-30 2012-10-31 大连易斯达汽车转向系统制造有限公司 Blade of power steering pump
CN206845459U (en) * 2017-05-08 2018-01-05 珠海格力节能环保制冷技术研究中心有限公司 The slide plate and rotary blade type compressor of a kind of rotary blade type compressor

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Publication number Priority date Publication date Assignee Title
CN1094135A (en) * 1993-01-06 1994-10-26 三星电子株式会社 The unit for discharging of compressed gas of rotary compressor
JPH07189924A (en) * 1993-12-28 1995-07-28 Hitachi Ltd Rotary compressor
JP2004052675A (en) * 2002-07-19 2004-02-19 Seiko Instruments Inc Gas compressor
CN202510363U (en) * 2012-03-30 2012-10-31 大连易斯达汽车转向系统制造有限公司 Blade of power steering pump
CN206845459U (en) * 2017-05-08 2018-01-05 珠海格力节能环保制冷技术研究中心有限公司 The slide plate and rotary blade type compressor of a kind of rotary blade type compressor

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