CN107110158A - Gas compressor - Google Patents

Gas compressor Download PDF

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Publication number
CN107110158A
CN107110158A CN201580070926.0A CN201580070926A CN107110158A CN 107110158 A CN107110158 A CN 107110158A CN 201580070926 A CN201580070926 A CN 201580070926A CN 107110158 A CN107110158 A CN 107110158A
Authority
CN
China
Prior art keywords
supply unit
blade
back pressure
rotation
pressure space
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201580070926.0A
Other languages
Chinese (zh)
Other versions
CN107110158B (en
Inventor
津田昌宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Corp
Original Assignee
Calsonic Kansei Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2014260492A external-priority patent/JP5878971B1/en
Priority claimed from JP2014260491A external-priority patent/JP5878970B1/en
Priority claimed from JP2014260500A external-priority patent/JP5831619B1/en
Application filed by Calsonic Kansei Corp filed Critical Calsonic Kansei Corp
Publication of CN107110158A publication Critical patent/CN107110158A/en
Application granted granted Critical
Publication of CN107110158B publication Critical patent/CN107110158B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/348—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the vanes positively engaging, with circumferential play, an outer rotatable member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0854—Vane tracking; control therefor by fluid means
    • F01C21/0863—Vane tracking; control therefor by fluid means the fluid being the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

Terminate and be communicated in the 1st supply unit (69a) with the back pressure space (77) of the blade groove (75) of the connection of intermediate pressure feed trough (67) and supply high pressure from the 1st supply unit (69a), until reaching maximal pressure by the refrigerant pressure of the discharge chambe (33a, 33b, 33c) of blade (25) separation of the blade groove (75).At the time point for having terminated the 1st supply unit (69a) that high voltage supply groove (69) is communicated in the back pressure space (77) of the connection of intermediate pressure feed trough (67), leading back pressure space (77) termination adjacent with the downstream on the direction of rotation X in the back pressure space (77) and the connection of the 1st supply unit (69a).

Description

Gas compressor
Technical field
The present invention relates to the gas compressor of so-called blade rotary.
Background technology
As Patent Document 1, conventional motion has various gas compressors.
Figure 16 represents to be configured at the compression body of the inside of the gas compressor associated with patent document 1.
The compression body has cylinder body 100 and is configured at a pair of lateral bodys 101 of the left and right of cylinder body 100.In cylinder body 100 and a pair Lateral body 101 has been internally formed cylinder chamber 105.Suction inlet 110 and two ejiction openings 108 are provided with cylinder body 100.
Rotor 102 is rotatably configured in cylinder chamber 105.Rotor 102 it is spaced apart be formed with multiple blade grooves 106.Blade 103 is configured at each blade groove 106 in the way of the outer peripheral face relative to rotor 102 is protruded/submerged freely.In blade The backrest surface side of ratio blade 103 of groove 106 is formed in part with back pressure space 107 (107A, 107B, 107C).Back pressure space 107 exists The two sides opening of rotor 102.
In the wall by the side of cylinder chamber 105 of each lateral body 101, intermediate pressure is formed with the rotational trajectory in back pressure space 107 Feed trough 113 and high voltage supply groove 114.Intermediate pressure is supplied to intermediate pressure feed trough 113, the intermediate pressure is the refrigerant than suction The pressure that pressure is high and pressure of refrigerant than ejection is low.High pressure is supplied to high voltage supply groove 114, the high pressure is and spray The equal pressure of the pressure of the refrigerant gone out.
In cylinder chamber 105, discharge chambe 105a, 105b, 105c are formed with surrounding by two blades 103.Rotated in rotor 102 When, discharge chambe 105a, 105b, 105c carry out inhalation process, compression section and spray process, and it is a series of to repeat this Process.
In inhalation process, discharge chambe 105a, 105b, 105c volume become larger, and suck and freeze from suction inlet 110 Agent.In compression section, discharge chambe 105a, 105b, 105c volume are tapered into, compression refrigerant.In process is sprayed, when When discharge chambe 105a, 105b, 105c volume are tapered into and refrigerant presses to the regulation pressure above, make open and close valve 109 dozens Open and spray refrigerant from ejiction opening 108.
In such a series of process, discharge chambe 105a, 105b, 105c refrigerant pressure is by each blade 103 Each blade 103 is pressed on the direction (hereinafter referred to as " storage direction ") stored to blade groove 106, but is acting on back pressure space In the presence of 107 back pressure, the top of each blade 103 is slided in the inwall of cylinder chamber 105, so as to make discharge chambe 105a, 105b, 105c reliably compression refrigerant.
Here, the initial stage of upwarded pressure in storage side less inhalation process, compression section, will be from intermediate pressure supply The intermediate pressure of groove 113 makes it play a role as back pressure.In addition, the pressure in the storage direction towards blade 103 is larger Later stage of compression section, spray in process, it is played a role as back pressure the high pressure from high voltage supply groove 114.Picture So, by making the back pressure for acting on blade 103 accordingly be changed with the pressure in the storage direction towards blade 103, so that Strongly reduce the resistance to sliding of blade 103 and seek low fuel consumption.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2013-194549 publications
The content of the invention
Problems to be solved by the invention
Figure 17 is to represent discharge chambe 105a pressure P105a, discharge chambe 105b pressure P105b and back pressure space 107A Pressure P107A, change corresponding with the anglec of rotation of rotor chart.As shown in Figure 17, it is 180 degree in angle When, terminate to connect with high voltage supply groove 114 with the back pressure space 107A of the connection of intermediate pressure feed trough 113.
In the example shown in Figure 16, in back pressure space 107B from the state that is connected with intermediate pressure feed trough 113 to height During the state transformation for pressing feed trough 114 to connect, the back pressure space 107A in leading rotation downstream connects with high voltage supply groove 114 It is logical.Therefore, when chase after from rotation upstream back pressure space 107B complete to connected with high voltage supply groove 114 state transformation when, Two back pressure space 107A, 107B are simultaneously as the state connected with high voltage supply groove 114.
Because the pressure P107B for the back pressure space 107B for rotating upstream is intermediate pressure, therefore, as shown in Figure 17 P, via Back pressure space 107A of the high voltage supply groove 114 with rotating the rotation downstream that the back pressure space 107B of upstream is connected pressure P107A Pressure that can be temporarily than being supplied to high voltage supply groove 114 is low.Later stage of compression section, the discharge chambe 105a for spraying process, The pressure of 105b, 105c refrigerant acts on the blade 103 in rotation downstream on the storage direction of blade 103, therefore, deposits Blade 103 is set temporarily to be accommodated in blade groove 106 so as to cause the possibility that vibration is produced.
The present invention be in view of the situation and make, it is an object of the present invention to for example, can prevent due to compression work Later stage of sequence, spray process blade back pressure space temporary decompression caused by blade vibration generation, also, It is able to maintain that the performance as gas compressor.
The solution used to solve the problem
In order to reach above-mentioned purpose, gas compressor of the invention possesses：
The cylinder body of tubular, it is internal with the cylinder chamber for being capable of compression refrigerant；
Lateral body, it is installed on the sidepiece of the cylinder body, seals the opening of the cylinder chamber of the sidepiece；
Rotor, it rotates in the cylinder chamber, and the rotor has multiple blade grooves in a rotational direction spaced apartly, should With the inner peripheral surface of the cylinder chamber relative outer peripheral face opening of multiple blade grooves in the rotor；
Multiple blades, the plurality of blade is accommodated in each blade groove and protrudes/submerge relative to the outer peripheral face respectively, The plurality of blade is slidingly contacted at the inner peripheral surface of the cylinder chamber, and will be separated between the outer peripheral face of the inner peripheral surface and the rotor Multiple discharge chambes；
Intermediate pressure supply unit, it is formed at least one of described lateral body, its be communicated in collecting will from inhalation process to The back pressure space of the bottom land of the blade groove for the blade that the discharge chambe of compression section separates, and will be than suction work certainly Sequence is supplied to the back pressure space to the big intermediate pressure of the refrigerant pressure of the discharge chambe of compression section；And
High voltage supply portion, it is formed at least one of described lateral body, terminated in the back pressure space with it is described in Between pressure supply unit connection after, the high voltage supply portion be communicated in house by from compression section to ejection process the discharge chambe The back pressure space of the blade groove of the blade separated, and by than from compression section to the compression for spraying process The refrigerant pressure of room and the big high voltage supply of the intermediate pressure to the back pressure space,
The high voltage supply portion is divided into multiple supply units independent of each other on the direction of rotation,
The 2nd supply unit positioned at second from the most upstream side of the direction of rotation is formed as shape：In a leaf In a period of the back pressure space of film trap is communicated in the 2nd supply unit, the 2nd supply unit will not be communicated in the rotation simultaneously Turn the back pressure space of upstream side other blade grooves adjacent with the blade groove in direction, and the high voltage supply portion Be formed as while the back pressure space of one blade groove of connection and the upstream side in the direction of rotation and the blade groove The scope in the back pressure space of other adjacent blade grooves.
Brief description of the drawings
Fig. 1 is the integrally-built section view of the gas compressor for the rotating vanes for representing the 1st embodiment of the present invention Figure.
Fig. 2 is the sectional view of the I-I lines of Fig. 1 gas compressor.
Fig. 3 is the sectional view of the II-II lines of Fig. 1 gas compressor.
Fig. 4 is the explanation figure for enlargedly representing the major part of the compression body shown in Fig. 3.
Fig. 5 be represent by the 1st supply unit and the 2nd supply unit of Fig. 3 high voltage supply groove with the back pressure space of blade groove not The explanation figure of the imaginary example for the situation about configuring with being spaced apart that can be connected with any one of the 1st supply unit and the 2nd supply unit.
Fig. 6 be the discharge chambe for representing Fig. 5 pressure and blade groove blade back pressure space pressure and rotor rotation The chart of the corresponding change of gyration.
Fig. 7 be the high voltage supply groove for representing Fig. 3 the 1st supply unit and the 2nd supply unit and blade groove back pressure space it Between connection sectional area explanation figure.
Fig. 8 be the discharge chambe for representing Fig. 3 pressure and blade groove blade back pressure space pressure and rotor rotation The chart of the corresponding change of gyration.
Fig. 9 is the gas compressor, relative with Fig. 2 sectional view of the rotating vanes of the 2nd embodiment of the present invention The sectional view at position answered.
Figure 10 is the gas compressor, relative with Fig. 3 sectional view of the rotating vanes of the 2nd embodiment of the present invention The sectional view at position answered.
Figure 11 is the explanation figure for enlargedly representing the major part of the compression body shown in Figure 10.
Figure 12 is represented in the compression body shown in Figure 10, and the protrusion stroke relative to blade groove of blade is with more than certain Ratio reduction region and the 1st supply unit and the 2nd supply unit between interval between position relationship explanation figure.
Figure 13 be the discharge chambe for representing Figure 12 pressure and blade groove blade back pressure space pressure and rotor The chart of the corresponding change of the anglec of rotation.
Figure 14 is represented in the compression body shown in Figure 10, and the protrusion stroke relative to blade groove of blade is with more than certain Ratio reduction region in during having blade sliding contact, the interval of the region and the 1st supply unit and the 2nd supply unit Between position relationship explanation figure.
Figure 15 be the discharge chambe for representing Figure 10 pressure and blade groove blade back pressure space pressure and rotor The chart of the corresponding change of the anglec of rotation.
Figure 16 is the explanation figure of the inside for the compression body for representing conventional gas compressor.
Figure 17 be the discharge chambe for representing Figure 16 pressure and blade groove blade back pressure space pressure and rotor The chart of the corresponding change of the anglec of rotation.
Embodiment
[the 1st embodiment]
1~Fig. 8 of reference picture illustrates the 1st embodiment of the present invention.
As shown in figure 1, the gas compressor 1 of present embodiment has：Substantially cylindric housing 2, be contained in housing 2 Compression unit 3, to compression unit 3 transmit the motor part 4 of driving force and be fixed on housing 2 and for controlling the driving of motor part 4 Inverter 5.
Rear shell of the housing 2 including being formed with the bottomed tube that the protecgulum 7 and opening of suction inlet (not shown) are blocked by protecgulum 7 9。
Compression unit 3 is fixed with the inwall 13 of rear shell 9.In compression unit 3, in side shape in the way of dividing in housing 2 Into there is suction chamber 11, discharge chamber 15 is formed with opposite side.Also, ejiction opening (not shown) is formed with the periphery of rear shell 9, should Ejiction opening connects discharge chamber 15 with kind of refrigeration cycle.In addition, the oily reservoir of the oil in reserve O formed below in discharge chamber 15 17, the oily O are used for the lubricity for keeping compression unit 3.
Compression unit 3 has：The compression body 19 of cylinder chamber 33 is formed, the oil eliminator 21 of compression body 19 is fixed on, rotates freely Rotor 23 that ground is contained in cylinder chamber 33, the blade 25 (reference picture 3) for protruding/submerging relative to rotor 23 and separate cylinder chamber 33 with And the drive shaft 27 of driving force is integratedly fixed and transmitted with rotor 23.
Compression body 19 includes：Cylinder body 29, a pair of lateral bodys 31 and be formed at cylinder body 29 inner circumferential cylinder chamber 33.
As shown in figure 3, cylinder body 29 has the cylinder chamber 33 of the oval shape internally deformed.Pressed from both sides by using a pair of lateral bodys 31 The two ends of cylinder body 29 are held, so as to block the opening of the cylinder chamber 33.
As shown in Figure 3, Figure 4, rotor 23 is configured in the way of its 1 location contacts is in the inwall of cylinder chamber 33, will be from cylinder chamber The position that 33 center (center of gravity) is deviateed is configured as pivot, and rotor 23 is with the outer peripheral face opening in rotor 23 The back pressure space 77 of blade groove 75 and rear side positioned at blade 25.
Rotation of the multiple blades 25 that cylinder chamber 33 is protruded/submerged relative to multiple blade grooves 75 of rotor 23 along rotor 23 Direction X is separated into multiple.Thus, multiple compressions are formed between the inner peripheral surface 33d of cylinder chamber 33 and the outer peripheral face 23a of rotor 23 Room 33a, 33b, 33c.
Moreover, cylinder body 29 has：Inlet hole 39, refrigerant is sucked into cylinder chamber 33 by it；Squit hole 35, it will be in cylinder chamber Refrigerant after being compressed in 33 sprays；Open and close valve 37, it is used to be opened and closed squit hole 35；And the oily feed path 41 in cylinder side, its with The oily feed path connection of lateral body 31.
As shown in figure 1, a pair of lateral bodys 31 include front side body 31a and rear side body 31b, oily separation is fixed with rear side body 31b Device 21.
Front side body 31a has：Anterior end surface 43, it is abutted with cylinder body 29；Inlet hole (not shown), it connects with inlet hole 39 It is logical, and suck refrigerant from suction chamber 11；Front side bearing 47, it rotatably supports drive shaft 27；And front side oil is supplied To path 49, it is connected with the oily feed path 41 in cylinder side.
Pressure feed groove is provided with anterior end surface 43, pressure feed groove has：Intermediate pressure feed trough 51, it is to back pressure space 77 supplies are higher than the pressure of the refrigerant of suction and pressure (intermediate pressure) of the low centre of pressure of refrigerant than ejection；With And high voltage supply groove 53, it is located at the position relative with the high voltage supply groove 69 of rear side body 31b sides.
Moreover, being formed with the front side endless groove 55 of ring-type, front side endless groove 55 and front side oil supply road in front side bearing 47 One side in footpath 49 is communicatively set.In addition, the another side of front side oil feed path 49 is connected with the oily feed path 41 in cylinder side.
As shown in Fig. 2 rear side body 31b has：Back end surface 57, it is abutted with cylinder body 29；Oily supply hole 59, it will storage Oily O in the lower section of discharge chamber 15 is sucked；Rear side bearing 63, it rotatably supports drive shaft 27；And rear side oil is supplied Path 59b is given, it is connected with the oily feed path 41 in cylinder side.
Back end surface 57 has：Squit hole 61, it is used to spray the refrigerant after compressing in cylinder chamber 33；Intermediate pressure is supplied Groove 67 (equivalent to the intermediate pressure supply unit in claim) is given, it supplies the pressure of the refrigerant than suction to back pressure space 77 The oil for the intermediate pressure that (suction pressure) is high and pressure (spray and press) of refrigerant than spraying is low；And high voltage supply groove 69 is (quite High voltage supply portion in claim), it supplies the pressure (spray and press) of the refrigerant as ejection to back pressure space 77 The oil of high pressure.
High voltage supply groove 69 is divided into the 1st supply unit 69a independent of each other (quite on the direction of rotation X of rotor 23 Supply unit in upstream side) and the 2nd supply unit 69b (equivalent to the supply unit in downstream).
Moreover, being open respectively in the 1st supply unit 69a and the 2nd supply unit 69b has high voltage supply path 71a, 71b, each height A pressure supply passageway 71a, 71b side is communicated in rear side endless groove 73, another side be respectively communicated with the 1st supply unit 69a with And the 2nd supply unit 69b.
In addition, the front side body 31a high voltage supply groove 53 relative with high voltage supply groove 69 is also divided into and the 1st supply unit Two same 69a and the 2nd supply unit 69b supply units (not shown).
For being formed in the back pressure space 77 (reference picture 3, Fig. 4) of rotor 23, by rotating rotor 23, before compression Half fragment position, back pressure space 77 is connected with intermediate pressure feed trough 51,67, in the later half fragment position of compression, back pressure space 77 and height Feed trough 53,69 is pressed to connect.
In the state shown in fig. 4, the discharge chambe of compression section will be moved to from inhalation process by the rotation of rotor 23 33b and the discharge chambe 33b on the direction of rotation X of rotor 23 downstream are simultaneously moved to the pressure for spraying process from compression section The connection of the back pressure space 77B terminations and intermediate pressure feed trough 67 of the blade groove 75 for the blade 25B that contracting room 33a separates.Also, the back of the body Pressure space 77B is connected with the 1st supply unit 69a of the upstream side on the direction of rotation X of rotor 23 since then.
In this condition, the leading blade 25A in the downstream of the blade 25B on the direction of rotation X of rotor 23 blade The connection that the back pressure space 77A of groove 75 has terminated with the 1st supply unit 69a, the with the downstream on the X of direction of rotation the 2nd Supply unit 69b is connected.
Then, the 1st supply unit 69a is formed as shape：On the direction of rotation X of rotor 23, leading blade 25A's Back pressure space 77A will not be supplied with the back pressure space 77B chased after from the ensuing blade 25B in blade 25A while being communicated in the 1st Portion 69a.That is, the 1st supply unit 69a is formed as：On the direction of rotation X of rotor 23, the angle model of the 1st supply unit 69a extension Enclose smaller than the difference of the back pressure space 77A angles being located at and back pressure space the 77B angle being located at.That is, rotor 23 The distance between back pressure space 77A and back pressure space 77B on the X of direction of rotation are set to the width than the 1st supply unit 69a It is wide.
Similarly, the 2nd supply unit 69b is formed as shape：On the direction of rotation X of rotor 23, leading blade 25A Back pressure space 77A and chase after will not be while be communicated in the 2nd confession from the back pressure space 77B of the ensuing blade 25B in blade 25A Give portion 69b.That is, the 2nd supply unit 69b is formed as：On the direction of rotation X of rotor 23, the angle of the 2nd supply unit 69b extension Scope is smaller than the difference of the back pressure space 77A angles being located at and back pressure space the 77B angle being located at.That is, rotor 23 Direction of rotation X on back pressure space 77A and the distance between back pressure space 77B be set to width than the 2nd supply unit 69b It is wide.
As described above, according to the difference of the back pressure space 77A angles being located at and back pressure space the 77B angle being located at, Produce the angle extended relative to the limitation of the 1st supply unit 69a angular ranges extended and relative to the 2nd supply unit 69b Spend the limitation of scope.
Similarly, according to the difference of the back pressure space 77B angles being located at and back pressure space the 77C angle being located at, produce The angle model extended relative to the limitation of the 1st supply unit 69a angular ranges extended and relative to the 2nd supply unit 69b The limitation enclosed.
Similarly, according to the difference of the back pressure space 77C angles being located at and back pressure space the 77A angle being located at, produce The angle model extended relative to the limitation of the 1st supply unit 69a angular ranges extended and relative to the 2nd supply unit 69b The limitation enclosed.
Like this, according to the angle that back pressure space 77 is located on the direction of rotation X of rotor 23, to determine the 1st supply Portion 69a and the 2nd supply unit 69b shape.
In addition, the distance between supply unit 69a of intermediate pressure feed trough 67 and the 1st on the direction of rotation X of rotor 23 and The distance between 2nd supply unit 69b and intermediate pressure feed trough 67 are set to the back pressure space on the direction of rotation X than rotor 23 77 width is wide.
As shown in figure 1, oil supply hole 59 and rear side oil feed path 59a is communicatively formed, from the oily feed path 59a of rear side Branch it is formed with the oily feed path 59b of rear side.Rear side oil feed path 59b is communicated in the oily feed path 41 in cylinder side.
The rear side endless groove 73 of ring-type is formed with rear side bearing 63, rear side endless groove 73 connects with rear side communication path 65 It is logical.One side of rear side communication path 65 is connected with rear side endless groove 73, and another side is open in high voltage supply groove 69.
Oil eliminator 21 is fixed on rear side body 31b, and the refrigerant after being compressed in cylinder chamber 33 flows into oil eliminator 21, oil Refrigerant is set to be separated with oil O from device 21.
Rotor 23 is fixed in the side of drive shaft 27, and drive shaft 27 is supported by each lateral body 31a, 31b bearing 47,63 To rotate freely.Moreover, the opposite side in drive shaft 27 is fixed with motor part 4.
Motor part 4 has：Stator 79, it is fixed on the inwall 13 of rear shell 9；And motor rotor 81, it is rotatably The inner circumferential side of stator 79 is configured at, is rotated in the presence of magnetic force.By rotating motor rotor 81 in the presence of magnetic force, from And transmit rotary driving force to compression unit 3.
Here, to the 1st supply unit 69a and the 2nd supply unit 69b of the high voltage supply groove 69 on the direction of rotation X of rotor 23 Between interval illustrate.
In the present embodiment, as shown in Figure 3, Figure 4, the 1st supply unit 69a and the 2nd on the direction of rotation X of rotor 23 is supplied The narrow width in the back pressure space 77 being set to the distance between portion 69b on the direction of rotation X than rotor 23.
Here, as shown in figure 5, the 1st supply unit 69a and the 2nd of the high voltage supply groove 69 on the direction of rotation X of rotor 23 is supplied It is assumed to the interval between portion 69b wider than the width in back pressure space 77.Fig. 5 is to represent to supply the 1st of Fig. 3 high voltage supply groove the Between will not being connected to portion and the 2nd supply unit with any one of the 1st supply unit and the 2nd supply unit with the back pressure space of blade groove Every the explanation figure of the imaginary example of situation about discretely configuring.
Fig. 6 is the pressure for representing discharge chambe 33a pressure P33a, discharge chambe 33b pressure P33b and back pressure space 77B The chart of the change corresponding with the anglec of rotation of rotor.As shown in Figure 6, when angle is 180 degree, finish and centre The back pressure space 77B of the connection of feed trough 67 is pressed to be communicated in high voltage supply groove 69.In the present embodiment, high voltage supply groove 69 by 1st supply unit 69a and the 2nd supply unit 69b is constituted, along with the rotation along the direction of rotation X rotors 23 rotated, back pressure space 77B is communicated in the 2nd supply unit 69b after the 1st supply unit 69a is communicated in.
Due between the 1st supply unit 69a and the 2nd supply unit 69b of the high voltage supply groove 69 on the direction of rotation X of rotor 23 Interval it is wider than back pressure space 77B width, therefore, in back pressure space, 77B connection target is changed into from the 1st supply unit 69a During the 2nd supply unit 69b, produce any one of back pressure space 77B and the 1st supply unit 69a and the 2nd supply unit 69b and do not connect State.
Now, because discharge chambe 33a, 33b for being separated by blade 25B from the later stage of compression section enter ejection process, Therefore, it is contained in the blade 25B for the blade groove 75 that back pressure space 77B is located between the 1st supply unit 69a and the 2nd supply unit 69b certainly Power of the inner peripheral surface 33d of cylinder chamber 33 by the direction submerged to blade groove 75.That is, it is located at the 1st supply unit in back pressure space 77B When between 69a and the 2nd supply unit 69b, back pressure space 77B volume is in the situation of reduction.
But, due to any one of back pressure space 77B and the 1st supply unit 69a and the 2nd supply unit 69b under the position Do not connect, therefore, the high pressure corresponding with the amount of the volume of back pressure space 77B reduction can not keep out of the way except back pressure space Any one beyond 77B.Therefore, turn in back pressure space 77B connection target from the 1st supply unit 69a to the 2nd supply unit 69b In stage in the way of change, as shown in Fig. 6 P1, the pressure in back pressure space 77 temporarily rises.That is, due to producing back pressure space The all disconnected state of any one of 77B and the 1st supply unit 69a and the 2nd supply unit 69b, therefore, as shown in Fig. 6 P1, the back of the body The pressure in pressure space 77 temporarily rises.
When the pressure for producing such back pressure space 77B rises, from the inner peripheral surface 33d of cylinder chamber 33 by blade groove 75 The blade 25B of the power in the direction submerged is intended to protrude from blade groove 75 in the presence of the back pressure space 77B of rising pressure.This If sample, pressing force that there is blade 25B, inner peripheral surface 33d relative to cylinder chamber 33 excessively increases, blade 25B and cylinder chamber 33 Inner peripheral surface 33d between resistance to sliding increase possibility.
Same phenomenon also can be in any one of blade 25A, blade 25C and the 1st supply unit 69a and the 2nd supply unit 69b Produced under all disconnected state.
Here, in the gas compressor 1 of present embodiment, as shown in fig. 7, back pressure space 77 connection target from 1 supply unit 69a to the 2nd supply unit 69b change when, by the connection sectional area S1 between the supply unit 69a of back pressure space 77 and the 1st and Sectional area obtained by connection sectional area S3 totals between the supply unit 69b of back pressure space 77 and the 2nd is ensured more than necessarily.
Specifically, when being communicated in the 1st supply unit 69a, the 2nd supply unit 69b in back pressure space 77, back pressure space can be made 77 high pressure is kept out of the way to lower portion, i.e. the oily O of high pressure high voltage supply is supplied to the 1st supply unit 69a, the 2nd supply unit 69b Path 71a, 71b, the rear side communication path 65 for being connected to high voltage supply path 71a, 71b, rear side endless groove 73, rear side oil supply Path 59a and oily supply hole 59.
In order to ensure keeping out of the way path with the equal high pressure above in above-mentioned path, in the gas compressor 1 of present embodiment, On the direction of rotation X of rotor 23, make that there is interval as following between the 1st supply unit 69a and the 2nd supply unit 69b, between being somebody's turn to do Every causing adding up to for above-mentioned connection sectional area S1, S3, from high voltage supply path 71a, 71b to oily supply hole 59, high pressure Oily O relative to the 1st supply unit 69a, the minimum path sectional area of the 2nd supply unit 69b feed path more than.
Then, the action to the gas compressor 1 of present embodiment is illustrated.
First, under the control of the inverter 5 shown in Fig. 1, coil stream from electric current to the stator 79 for being wound in motor part 4 It is dynamic.By making electric current to coil flowing so as to produce magnetic force, the motor rotor 81 configured in the inner circumferential of stator 79 rotates.
Rotated by motor rotor 81, side is fixed with the drive shaft 27 of motor rotor 81 and rotated at one end, so as to be fixed on The rotor 23 of the another side of drive shaft 27 also rotates.
Along with the rotation of rotor 23, refrigerant flows into suction chamber 11, and refrigerant is from suction chamber 11 via front side body 31a's Inlet hole (not shown) is sucked (inhalation process) to cylinder chamber 33.For the refrigerant sucked to cylinder chamber 33, multiple blades 25 are utilized Discharge chambe 33a, 33b, 33c are formed in cylinder chamber 33, rotates to compress the system in discharge chambe 33a, 33b, 33c by rotor 23 Cryogen (compression section).
The refrigerant compressed in cylinder chamber 33 pushes open and close valve 37 open and sprays (ejection process), then blowing from squit hole 35 Portal and 61 sprayed via oil eliminator 21 to discharge chamber 15.In addition, the refrigerant sprayed from squit hole 61 is by 21 points of oil eliminator From into refrigerant and oil O, refrigerant sprays from ejiction opening (not shown) to kind of refrigeration cycle (not shown), and oily O is stored in discharge chamber 15 lower section.
The oil for being stored in the lower section of discharge chamber 15 passes through the oily feed path 59a of rear side from rear side body 31b oily supply hole 59 Supplied by side bearing 63 backward.
It is throttled by the oil for the high pressure that side bearing 63 is supplied backward between drive shaft 27, so that the system as than suction Pressure (suction pressure) height of cryogen and the low intermediate pressure of the pressure (spraying pressure) of refrigerant than ejection, the oily O as intermediate pressure Supplied by the gap between drive shaft 27 and rear side body 31b and to intermediate pressure feed trough 67.
As shown in figure 3, for the oily O of the intermediate pressure supplied to intermediate pressure feed trough 67, in the suction work certainly of refrigerant Sequence supplies intermediate pressure in the range of compression section to back pressure space 77, causes blade to the back side supply intermediate pressure of blade 25 25 protrude from blade groove 75.
Moreover, being opened by the oily O for the high pressure that side bearing 63 is supplied backward via the comfortable back end surface 57 of rear side communication path 65 High voltage supply path 71a, 71b of mouth is supplied to the 1st supply unit 69a of high voltage supply groove 69 and the 2nd supply unit 69b.
As shown in figure 3, for by the oily O of the high pressure to the 1st supply unit 69a and the 2nd supply unit 69b supplies, in refrigeration Agent from compression section to spray process in the range of, to back pressure space 77 supply high pressure, to blade 25 the back side supply high pressure So that blade 25 is protruded from blade groove 75.Moreover, the 1st supply unit 69a and the 2nd supply unit 69b via back pressure space 77 with before High voltage supply groove 53, corresponding each supply unit (not shown) of lateral body 31a sides is connected, also from each confession of high voltage supply groove 53 To portion high pressure is supplied to back pressure space 77.
Moreover, the oily O of high pressure flows into the oily feed path 59a of rear side from oil supply hole 59, divide from the oily feed path 59a of rear side Branch is by the oily feed path 59b of rear side, via the oily feed path 41 in cylinder side from the oily feed path 49 in front side by side bearing 47 forward Supply.
The oily O for being fed into the high pressure of front side bearing 47 is throttled between drive shaft 27, so that turn into intermediate pressure, into Supplied for the oily O of intermediate pressure by the gap between drive shaft 27 and front side body 31a and to intermediate pressure feed trough 51.
The oily O for the high pressure come from front side body 31a and rear side body the 31b supply of high voltage supply groove 53,69 is in rotor 23 Rotate later half fragment position to be supplied to the back pressure space 77 of rotor 23, application makes the back pressure that blade 25 is protruded from blade groove 75.
Using the gas compressor 1 of present embodiment, terminate and the blade groove 75 of the connection of intermediate pressure feed trough 67 Back pressure space 77 is connected with the 1st supply unit 69a of high voltage supply groove 69, and high pressure is supplied from the 1st supply unit 69a.
Afterwards, for the back pressure space 77, in the back of the body of the ensuing blade groove 75 of the upstream side on the X of direction of rotation Pressure space 77 is communicated in termination and the 1st supply unit 69a connection before the 1st supply unit 69a, independent relative to the 1st supply unit 69a The 2nd supply unit 69b in downstream being located on the X of direction of rotation can connect with the back pressure space, again relative to back pressure sky Between supply high pressure.
Therefore, terminating and the back pressure space 77 of the connection of intermediate pressure feed trough 67 is communicated in the of high voltage supply groove 69 On 1 supply unit 69a time point, the leading back pressure space adjacent with the downstream on the direction of rotation X in the back pressure space 77 77 will not connect with the 1st supply unit 69a simultaneously.
Figure 4 illustrates following situation, for back pressure space 77A, in the following of the upstream side positioned at direction of rotation X The back pressure space 77B of blade groove 75 be communicated in termination and the 1st supply unit 69a connection before the 1st supply unit 69a, relative to The 2nd supply unit 69b in the downstream being located on the X of direction of rotation of the 1st supply unit 69a independences can be connected with back pressure space 77A, Again high pressure is supplied relative to back pressure space 77A.
Therefore, in back pressure space, 77B was communicated on the 1st supply unit 69a time point of high voltage supply groove 69, with the back pressure The adjacent leading back pressure space 77A in downstream on space 77B direction of rotation X will not connect with the 1st supply unit 69a simultaneously It is logical.For same relation, not only between back pressure space 77A and back pressure space 77B, in back pressure space 77B and back pressure space Also set up between 77C, between back pressure space 77C and back pressure space 77A.
By making to be communicated in the 1st supply unit 69a when two back pressure spaces 77 are different, leading back pressure space 77 can be prevented Pressure because chase after from ensuing back pressure space 77 the intermediate pressure risen to before high pressure and temporarily from high drops. Thereby, it is possible to the back pressure space 77 of the blade 25 of the early stage that prevents compression section temporary decompression cause blade 25 relative to The generation for such vibration that the inner peripheral surface 33d of cylinder chamber 33 is contacted/left repeatedly.
In addition, for back pressure space 77, in the back pressure of the ensuing blade groove 75 of the upstream side on the X of direction of rotation Space 77 is communicated in termination and the 2nd supply unit 69b connection before the 2nd supply unit 69b.Therefore, terminating and high voltage supply The back pressure space 77 of 1st supply unit 69a of groove 69 connection is communicated in the 2nd supply unit 69b of high voltage supply groove 69 time point On, the leading back pressure space 77 adjacent with the downstream on the direction of rotation X in the back pressure space 77 will not be supplied with the 2nd simultaneously Portion 69b is connected.
Fig. 8 is the pressure for representing discharge chambe 33a pressure P33a, discharge chambe 33b pressure P33b and back pressure space 77B The chart of the change corresponding with the anglec of rotation of rotor.As shown in Figure 8, when angle is 180 degree, finish and centre The back pressure space 77B of the connection of feed trough 67 is pressed to be communicated in high voltage supply groove 69.In the present embodiment, high voltage supply groove 69 by 1st supply unit 69a and the 2nd supply unit 69b is constituted, along with the rotation along the direction of rotation X rotors 23 rotated, back pressure space 77B is communicated in the 2nd supply unit 69b after the 1st supply unit 69a is communicated in.
As shown in the P in Figure 17 chart, following phenomenon is produced：The pressure in leading back pressure space 107 is due to chasing after From ensuing back pressure space 107 from intermediate pressure rise to the way of high pressure in pressure and temporarily from high drops. But, by making to connect with the 2nd supply unit 69b when two back pressure spaces 77 are different, it can prevent as illustrated in the graph of figure 8 Above-mentioned phenomenon.Thereby, it is possible to prevent the later stage of compression section, the temporary of back pressure space 77 for the blade 25 for spraying process from subtracting Pressure causes blade 25 relative to the generation of the inner peripheral surface 33d of the cylinder chamber 33 such vibrations for contacting/leaving repeatedly.
Also, using the gas compressor 1 of present embodiment, by the connection target in back pressure space 77 from the 1st supply unit 69a Connection sectional area between when changing to the 2nd supply unit 69b, the supply unit 69a of back pressure space 77 and the 1st, the 2nd supply unit 69b S1, S3 total are set to the oily O of the high pressure minimum path relative to the 1st supply unit 69a, the 2nd supply unit 69b feed path It is more than sectional area.
Stage in the way that the connection target in back pressure space 77 changes from from the 1st supply unit 69a to the 2nd supply unit 69b, the back of the body Space 77 is pressed with least one of sectional area more than minimum path sectional area and the 1st supply unit 69a and the 2nd supply unit 69b Connection, thus, it is possible to ensure that the high pressure in back pressure space 77 keeps out of the way target.
Therefore, it is possible to utilize said structure, following phenomenon is prevented as illustrated in the graph of figure 8：P1 in Fig. 6 chart Shown such phenomenon, i.e. when the connection target in back pressure space 77 changes from the 1st supply unit 69a to the 2nd supply unit 69b, because The pressure in the back pressure space 77 caused by the sectional area for the keeping out of the way path deficiency of the high pressure in back pressure space 77 temporarily rises Phenomenon,.
Thereby, it is possible to prevent due to back pressure space 77 temporary pressure rise cause blade 25 relative to cylinder chamber 33 Inner peripheral surface 33d pressing force excessively increase, prevent resistance to sliding between the two from increasing.Therefore, it is possible to prevent compression section Later stage, the temporary supercharging in back pressure space 77 that sprays process cause the inner peripheral surface 33d relative to cylinder chamber 33 of blade 25 Resistance to sliding increase and needed for the rotation of rotor 23 power increase, be able to maintain that the performance as gas compressor 1.
Additionally it may be desirable to which the 2nd supply unit 69b in high voltage supply groove 69 will not be on the direction of rotation X of rotor 23 together When be communicated in the range of two adjacent back pressure spaces 77, the 2nd supply unit 69b is set to as much as possible on the X of direction of rotation The shape of large-size.By doing so it is possible, with can making due to the connection with the 1st supply unit 69a from intermediate pressure towards high pressure The earlier stage of compression section of the increased back pressure space 77 of pressure from discharge chambe 33a, 33b, 33c is set just to be communicated in the 2nd supply Portion 69b, afterwards, makes the pressure stability in back pressure space 77 in high pressure.
Thereby, it is possible to make discharge chambe 33a, 33b, 33c ejection process start in earlier stage, squit hole 35 can be made Open and close valve 37 makes the high-pressure refrigerant in discharge chambe 33a, 33b, 33c efficiently fully spray in earlier stage valve opening, can Seek to improve refrigerant compression power.
In the present embodiment, high voltage supply groove 69 is divided into two the 1st supplies independent of each other on the X of direction of rotation Portion 69a and the 2nd supply unit 69b.But, high voltage supply groove 69 is divided into the supply unit of more than 3 on the X of direction of rotation Situation can also be applicable the present invention.In this case, back pressure space 77 on the X of direction of rotation across two adjacent supply units When mobile, the connection sectional area between the supply unit of supply unit, downstream for upstream side and back pressure space 77 can also be fitted With the relation of the present invention.
[the 2nd embodiment]
Then, 9~Figure 15 of reference picture illustrates the 2nd embodiment of the present invention.
Fig. 9, Figure 10 represent the construction of the gas compressor of the rotating vanes of the 2nd embodiment.2nd embodiment has The rear side body 31b2 different from the rear side body 31b of the 1st embodiment.Structure and the 1st embodiment phase beyond rear side body 31b2 Together.For with the 1st embodiment identical constituting parts, mark identical reference and omit the description in the accompanying drawings, only say Bright different structure.
In the present embodiment, on the direction of rotation X of rotor 23, the 1st supply unit 69a and the 2nd supply unit 69b it Between provided with blade groove 75 back pressure space more than 77 size interval 69c.That is, supplied located at the 1st supply unit 69a and the 2nd The width that interval 69c between portion 69b is set to the back pressure space 77 than blade groove 75 is wide.
In the state shown in Figure 11, the discharge chambe of compression section will be moved to from inhalation process by the rotation of rotor 23 33b and the discharge chambe 33b on the direction of rotation X of rotor 23 downstream are simultaneously moved to the pressure for spraying process from compression section The back pressure space 77B of blade groove 75 for the blade 25B that contracting room 33a separates is connected with the 1st supply unit 69a of high voltage supply groove 69.
In this condition, the leading blade 25A in the downstream of the blade 25B on the direction of rotation X of rotor 23 blade The connection that the back pressure space 77A of groove 75 has terminated with the 2nd supply unit 69b, starts with being located in direction of rotation X downstream Between pressure supply unit 67 connect.
Here, to the 1st supply unit 69a and the 2nd supply unit 69b of the high voltage supply groove 69 on the direction of rotation X of rotor 23 Between interval 69c position illustrate.After the state shown in Figure 11, when rotor 23 rotates towards direction of rotation X, Back pressure space 77B terminates its connection with the 1st supply unit 69a, and back pressure space 77B located at the 1st supply unit 69a and the 2nd with supplying Interval 69c connections between portion 69b.Now produce appointing in back pressure space 77B and the 1st supply unit 69a and the 2nd supply unit 69b The disconnected state of one.
In this condition, if along with the rotation to direction of rotation X of rotor 23, blade 25B is relative to blade groove 75 Prominent stroke is reduced, then back pressure space 77B volume is reduced.Now, due to back pressure space 77B and the 1st supply unit 69a and the 2nd Any one of supply unit 69b is not connected, therefore, it is impossible to make the high pressure corresponding with the amount of volume reduction to the 1st supply unit 69a, the 2nd supply unit 69b keep out of the way.
Herein it is assumed that such situation, interval 69c configurations are in following location：In blade 25B and the inner peripheral surface of cylinder chamber 33 During region sliding contact shown in the scope of 33d Figure 12 (A), i.e. blade 25B and the direction rotation side along with rotor 23 To X rotation, blade the 25B prominent stroke relative to blade groove 75 with the region sliding contact of the ratio reduction more than certain When, the position that back pressure space 77B is connected.
Figure 12 is to represent the blade 25B protrusion stroke relative to blade groove 75 with the region of certain ratio reduction above The explanation figure of position relationship between the 69c of interval.
In this case, in back pressure space 77B from the state of being blocked the 1st supply unit 69a and the 2nd supply unit 69b, the back of the body Press space 77B volume to be reduced with the ratio corresponding with the slip of blade 25B protrusion stroke, as shown in Figure 13 P1 that Sample, back pressure space 77B pressure temporarily rises.
When the pressure for producing such back pressure space 77B rises, from the inner peripheral surface 33d of cylinder chamber 33 by blade groove 75 The blade 25B of the power in the direction submerged is intended to protrude from blade groove 75 in the presence of the pressure of back pressure space 77B rising.So If, the pressing force that there is the blade 25B inner peripheral surface 33d relative to cylinder chamber 33 excessively increases, blade 25B and cylinder chamber 33 it is interior The possibility of resistance to sliding increase between side face 33d.
Here, configuration space 69c as follows：By direction rotation inner peripheral surface 33d, along with rotor 23 of cylinder chamber 33 Turning the slip of the protrusion stroke relative to blade groove 75 of the blade 25 of direction X rotation turns into lower than above-mentioned certain ratio Defined threshold value below slip region as prominent stroke the less region of slip, in the gas of present embodiment In gas compressor 1, at the less region of slip that blade 25 is slidingly contacted at the protrusion stroke, back pressure space 77 and interval 69c is connected.
Specifically, in the present embodiment, as shown in figure 14, the inner peripheral surface 33d of cylinder chamber 33 is formed as following 4 regions It is continuous successively on the direction of rotation X of rotor 23,
(a) the protrusion stroke from blade groove 75 with the blade 25 of the inner peripheral surface 33d sliding contacts of cylinder chamber 33 is along with turning Son 23 the rotation towards direction of rotation X and increased region,
(b) the protrusion stroke from blade groove 75 with the blade 25 of the inner peripheral surface 33d sliding contacts of cylinder chamber 33 is along with turning Son 23 the rotation towards direction of rotation X and reduction region,
(c) the protrusion stroke from blade groove 75 with the blade 25 of the inner peripheral surface 33d sliding contacts of cylinder chamber 33 is along with turning The rotation towards direction of rotation X of son 23 and reduce and the region of its slip ratio (b) the small region of slip,
(d) the protrusion stroke from blade groove 75 with the blade 25 of the inner peripheral surface 33d sliding contacts of cylinder chamber 33 is along with turning The rotation towards direction of rotation X of son 23 and reduce and the region of its slip ratio (c) slip is big and the region than (b) The small region of slip.
Here, interval 69c is configured in following location：The direction rotation along with rotor 23 is slidingly contacted in blade 25 During the region of the slip of the protrusion stroke of the blade 25 of direction X rotation minimum (c), the position that back pressure space 77 is connected Put.
Next, the action to the gas compressor 1 of present embodiment is illustrated.
In the present embodiment, it is communicated in high pressure with the back pressure space 77 of the connection of intermediate pressure feed trough 67 and supplies having terminated It is adjacent with the downstream on the direction of rotation X in the back pressure space 77 leading to the 1st supply unit 69a of groove 69 time point Back pressure space 77 will not be connected with the 1st supply unit 69a simultaneously.
Therefore, terminating and the back pressure space 77 of the connection of intermediate pressure feed trough 67 is communicated in the of high voltage supply groove 69 1 supply unit 69a time point, the leading back pressure space 77 adjacent with the downstream on the direction of rotation X in the back pressure space 77 It will not be connected simultaneously with the 1st supply unit 69a.
By making to be communicated in the 1st supply unit 69a when two back pressure spaces 77 are different, leading back pressure space 77 can be prevented Pressure because chase after from ensuing back pressure space 77 the intermediate pressure risen to before high pressure and temporarily from high drops. Thereby, it is possible to the back pressure space 77 of the blade 25 of the early stage that prevents compression section temporary decompression cause blade 25 relative to The generation for such vibration that the inner peripheral surface 33d of cylinder chamber 33 is contacted/left repeatedly.
Moreover, back pressure space 77 is in the back pressure space 77 of the ensuing blade groove 75 of the upstream side positioned at direction of rotation X It is communicated in termination and the 2nd supply unit 69b connection before the 2nd supply unit 69b.Therefore, terminating and high voltage supply groove 69 The back pressure space 77 of 1st supply unit 69a connection is communicated in the 2nd supply unit 69b of high voltage supply groove 69 time point, with the back of the body The adjacent leading back pressure space 77 in the downstream on the direction of rotation X in space 77 is pressed not connect simultaneously with the 2nd supply unit 69b It is logical.
Therefore, as shown in Figure 15 chart, later stage, the back pressure sky of the blade 25 of ejection process of compression section can be prevented Between 77 temporary decompression cause blade 25 relative to such vibration that the inner peripheral surface 33d of cylinder chamber 33 is contacted/left repeatedly Generation.
Also, using the gas compressor 1 of present embodiment, the supplies of the 1st supply unit 69a and the 2nd are set as follows The position of interval 69c between portion 69b, i.e. between the supply unit 69a and the 2nd supply unit 69b of back pressure space 77 and the 1st When 69c is connected, the blade 25 for the blade groove 75 for being contained in the back pressure space 77 is set to be slidingly contacted at the direction of adjoint rotor 23 The region of the slip of the protrusion stroke of the blade 25 of direction of rotation X rotation minimum (c).
Therefore, when the interval 69c between back pressure space 77 and the 1st supply unit 69a and the 2nd supply unit 69b is connected, blade 25 protrusion stroke is hardly reduced as the part that Figure 15 round frame is surrounded, and the volume in back pressure space 77 also hardly subtracts It is few.Therefore, as shown in Figure 15, the temporary of back pressure space 77 is not produced when back pressure space 77 is connected with interval 69c Pressure increase.
Therefore, as shown in the P1 in Figure 13 chart, the connection target in back pressure space 77 is the 1st supply unit 69a And during the 2nd interval 69c between supply unit 69b, the high pressure in back pressure space 77 can be prevented as shown in Figure 15 chart Keep out of the way path disappear, the phenomenon that temporarily rises of the pressure in back pressure space 77.
Thereby, it is possible to prevent due to back pressure space 77 temporary pressure rise cause blade 25 relative to cylinder chamber 33 Inner peripheral surface 33d pressing force excessively increase and between the two resistance to sliding increase.Thus, it is possible to prevent after compression section Phase, the temporary supercharging in the back pressure space 77 for spraying process cause the inner peripheral surface 33d relative to cylinder chamber 33 of blade 25 cunning Dynamic resistance increases and the power increase needed for the rotation of rotor 23, is able to maintain that the performance as gas compressor 1.
Additionally it may be desirable to which the rotation in rotor 23 will not be communicated in simultaneously in the 2nd supply unit 69b of high voltage supply groove 69 Turn in the range of two back pressure spaces 77 adjacent on the X of direction, be as much as possible set to the 2nd supply unit 69b on the X of direction of rotation The shape of large-size.By doing so it is possible, with can making due to the connection with the 1st supply unit 69a from intermediate pressure towards high pressure The earlier stage of compression section of the increased back pressure space 77 of pressure from discharge chambe 33a, 33b, 33c is set just to be communicated in the 2nd supply Portion 69b, afterwards, makes the pressure stability in back pressure space 77 in high pressure.
Thereby, it is possible to make discharge chambe 33a, 33b, 33c ejection process start in earlier stage, squit hole 35 can be made Open and close valve 37 makes the high-pressure refrigerant in discharge chambe 33a, 33b, 33c efficiently fully spray in earlier stage valve opening, can Seek to improve refrigerant compression power.
In addition, in the present embodiment, the interval 69c between the 1st supply unit 69a and the 2nd supply unit 69b is set The width for being set to back pressure space 77 than blade groove 75 is wide but it is also possible to be interval 69c is on the direction of rotation X of rotor 23 The size smaller than the size in back pressure space 77.In this case, back pressure space 77 connection target from high voltage supply portion 69 When 1st supply unit 69a changes to the 2nd supply unit 69b, and it is the phase in back pressure space 77 in back pressure space 77 when 69c is spaced The amount overlapping with interval 69c is reduced for each supply unit 69a, 69b connection sectional area.
Because connection sectional area is reduced, therefore, when the rotation along with rotor 23, blade 25 is empty to the back pressure of blade groove 75 Between 77 sides submerge, when the volume in back pressure space 77 is reduced, make high pressure in back pressure space 77 to the 1st supply unit 69a, the 2nd supply The efficiency that portion 69b keeps out of the way accordingly declines with the amount of the volume of reduction.Like this, there is following possibility：In compression work Later stage of sequence, spray in process, the pressure in back pressure space 77 temporarily rises, and blade 25 presses the inner peripheral surface 33d of cylinder chamber 33 Power excessively increase, resistance to sliding between the inner peripheral surface 33d of blade 25 and cylinder chamber 33 increase.
But, will interval 69c configuration in such position, i.e. blade 25 be slidingly contacted at along with rotor 23 to During the region of the slip of the protrusion stroke of the blade 25 of direction of rotation X rotation minimum (c), back pressure space 77 and interval The position of 69c connections.Therefore, it is possible to prevent the efficiency of keeping out of the way of the high pressure in back pressure space 77 from declining and the pressure in back pressure space 77 Temporarily rise.Therefore, it is possible to prevent the later stage of compression section, the temporary supercharging in the back pressure space 77 for spraying process from leading Cause blade 25 the resistance to sliding increase of the inner peripheral surface 33d relative to cylinder chamber 33 and needed for the rotation of rotor 23 power increase, It is able to maintain that the performance as gas compressor 1.
In addition, in the present embodiment, on the basis of the slip relative to the protrusion stroke of blade groove 75 of blade 25 To determine the region of the inner peripheral surface 33d of the cylinder chamber 33 of 25 sliding contacts of blade when back pressure space 77 is connected with interval 69c. During decision, with the temporary increased permissible range of the pressure for back pressure space 77 accordingly, to determine blade 25 Relative to the higher limit of the permissible range of the slip of the protrusion stroke of blade groove 75.
Also, using the higher limit of decision as defined threshold value, to determine the inner peripheral surface 33d, blade 25 of cylinder chamber 33 The slip of prominent stroke is the region as below the threshold value.Configuration space 69c, is slided in blade 25 as follows During the dynamic inner peripheral surface 33d for being contacted with the cylinder chamber 33 determined like this region, back pressure space 77 is connected with interval 69c.
By carrying out such decision, the interval between the supply unit 69a and the 2nd supply unit 69b of back pressure space 77 and the 1st , can be by the temporary supercharging control in the back pressure space 77 caused by the reduction of the protrusion stroke of blade 25 during 69c is connected System is in permissible range.Therefore, it is possible to prevent compression section later stage, spray process back pressure space 77 temporary supercharging Cause the resistance to sliding increase of the inner peripheral surface 33d relative to cylinder chamber 33 of blade 25 and the power needed for the rotation of rotor 23 increases Greatly, it is able to maintain that the performance as gas compressor 1.
In the present embodiment, high voltage supply groove 69 is divided into two the 1st supplies independent of each other on the X of direction of rotation Portion 69a and the 2nd supply unit 69b.But, high voltage supply groove 69 is divided into the supply unit of more than 3 on the X of direction of rotation Situation can also be applicable the present invention.In this case, in the interval and cylinder chamber of two supply units adjacent on the X of direction of rotation Relative position between side face can be applicable the relation of the present invention.
[other embodiment]
In above-mentioned multiple embodiments, the 2nd supply unit 69b of high voltage supply groove 69 is set as in the rotation side of rotor 23 Two adjacent back pressure spaces 77 will not simultaneously be communicated in the 2nd supply unit 69b size on to X.For example, it is also possible to be, On the X of direction of rotation, the 2nd supply unit 69b has the space of the size bigger than the 1st supply unit 69a size.By doing so it is possible, energy Enough make from intermediate pressure towards high pressure to make by the connection with the 1st supply unit 69a the increased back pressure space 77 of pressure from compression The earlier stage of room 33a, 33b, 33c compression section is just communicated in the 2nd supply unit 69b, afterwards, can be by back pressure space 77 Pressure stability is in high pressure.
Thereby, it is possible to make discharge chambe 33a, 33b, 33c ejection process start in earlier stage, squit hole 35 can be made Open and close valve 37 makes the high-pressure refrigerant in discharge chambe 33a, 33b, 33c efficiently fully spray in earlier stage valve opening, can Seek to improve refrigerant compression power.
Moreover, in above-mentioned multiple embodiments, in order to prevent the back pressure space 77 of blade 25 and the blade of upstream side 25 back pressure space 77 is communicated in identical supply unit, to high voltage supply groove 69 is divided into the 1st supply unit on the X of direction of rotation The situation of 69a and the 2nd supply unit 69b the two supply units is illustrated.But, for high voltage supply groove 69 in rotation The situation of the supply unit of more than 3 is divided on the X of direction, also can be widely using the present invention.
In this case, height is pressed to from centre in the supply unit of more than 3 and in back pressure space 77 pressure The supply unit for pressing the back pressure space 77 of the state in the way risen to connect, as long as being formed as two adjacent on the X of direction of rotation Back pressure space 77 will not be communicated in the shape of the supply unit simultaneously, just also result in and above-mentioned multiple embodiment identicals Effect.
That is, spinning direction X most upstream side rise positioned at second supply unit at least turn into be formed as on the X of direction of rotation Two adjacent back pressure spaces 77 will not be communicated in the object of the shape of the supply unit simultaneously.Moreover, for from the side of most upstream The 3rd later supply unit of supply unit, it is empty with back pressure when during the pressure in back pressure space 77 presses to the way that high pressure rises from centre Between 77 connection in the case of, also as be formed as two back pressure spaces 77 adjacent on the X of direction of rotation will not be while being communicated in The object of the shape of the supply unit.
Embodiments of the present invention above are only the simple illustration in order to be readily appreciated that the present invention and record, this hair It is bright to be not limited to the embodiment.The technical scope of the present invention is not limited to the specific technology thing disclosed in above-mentioned embodiment , the technical scope of the application can be also contained in from easily derived various modifications disclosed above, change, substitute technology It is interior.
The application advocate based on Japanese Patent filed in 24 days December in 2014 be willing to 2014-260491 priority, 2014-260492 priority is willing to, based on December 24th, 2014 based on Japanese Patent filed in 24 days December in 2014 The Japanese Patent of application is willing to 2014-260500 priority, the full content of above-mentioned application by referring to and be incorporated into this Specification.
Industrial applicability
According to the present invention, the back pressure space and high voltage supply portion terminated with the blade groove of the connection of intermediate pressure supply unit 1st supply unit is connected, and high pressure is supplied to from the 1st supply unit, the discharge chambe separated until the blade by being incorporated in the blade groove Refrigerant pressure reach maximal pressure.Afterwards, the back pressure of the ensuing blade groove of side is swum in the back pressure space in a rotational direction Space is communicated in termination and the connection of the 1st supply unit before the 1st supply unit, and is communicated in following with the 1st supply unit independence The 2nd supply unit, high pressure is supplied to again.
Therefore, in the 1st supply that high voltage supply portion is communicated in the back pressure space of the connection of intermediate pressure supply unit of having terminated The time point in portion, the leading back pressure space adjacent with the downstream on the direction of rotation in the back pressure space will not be simultaneously with the 1st Supply unit is connected.Therefore, it is possible to prevent the pressure in leading back pressure space because chase after from ensuing back pressure space intermediate pressure And temporarily from high drops, shaking for the blade caused by the temporary decompression in the back pressure space of blade can be prevented Dynamic generation.
Description of reference numerals
1 gas compressor；2 housings；3 compression units；4 motor parts；5 inverters；7 protecgulums；Shell after 9；11 suction chambers；In 13 Wall；15th, 108 discharge chamber；19 compression bodies；21 oil eliminators；23rd, 102 rotor；23a outer peripheral faces；25(25A、25B、25C)、103 Blade；27 drive shafts；29th, 100 cylinder body；31st, 101 lateral body；31a front side bodies；Body on rear side of 31b；33rd, 105 cylinder chamber；33a、33b、 33c, 105a, 105b, 105c discharge chambe；33d inner peripheral surfaces；35 squit holes；37th, 109 open and close valve；39 inlet holes；41 cylinder sides oil is supplied To path；43 anterior end surfaces；47 front side bearings；The oily feed path in 49 front sides；51st, 113 intermediate pressure feed trough；53rd, 114 high pressures are supplied To groove；55 front side endless grooves；57 back end surfaces；59 oily supply holes；Oily feed path on rear side of 59a；Oily feed path on rear side of 59b； 61 squit holes；63 rear side bearings；65 rear side access；67 intermediate pressure feed troughs (intermediate pressure supply unit)；69 high voltage supply grooves are (high Press supply unit)；The supply units of 69a the 1st (supply unit of upstream side)；The supply units of 69b the 2nd (supply unit in downstream)；69c intervals； 71a, 71b high voltage supply path；73 rear side endless grooves；75th, 106 blade groove；77 (77A, 77B, 77C), 107 back pressure spaces；79 Stator；81 motor rotors；110 suction inlets；O oil；X direction of rotation.

Claims (5)

1. a kind of gas compressor (1), it is characterised in that
The gas compressor (1) has：
The cylinder body (29) of tubular, it is internal with the cylinder chamber (33) for being capable of compression refrigerant；
Lateral body (31a, 31b), it is installed on the sidepiece of the cylinder body (29), seals the opening of the cylinder chamber (33) of the sidepiece；
Rotor (23), it rotates in the cylinder chamber (33), and the rotor has multiple leaves spaced apartly on direction of rotation (X) Film trap (75), the plurality of blade groove (75) is in the relative with the inner peripheral surface (33d) of the cylinder chamber (33) outer of the rotor (23) Side face (23a) is open；
Multiple blades (25), the plurality of blade is accommodated in each blade groove (75) and relative to the outer peripheral face (23a) respectively Protrude/submerge, the plurality of blade is slidingly contacted at the inner peripheral surface (33d) of the cylinder chamber (33), and by the inner peripheral surface (33d) and institute Multiple discharge chambes (33a, 33b, 33c) are separated between the outer peripheral face (23a) for stating rotor (23)；
Intermediate pressure supply unit (67), it is formed at least one of described lateral body (31a, 31b), and it is communicated in collecting by self-priming Enter the blade groove (75) for the blade (25) that process separates to the discharge chambe (33a, 33b, 33c) of compression section The back pressure space (77) of bottom land, and by than the refrigeration of the discharge chambe (33a, 33b, 33c) from inhalation process to compression section The big intermediate pressure of agent pressure is supplied to the back pressure space (77)；And
High voltage supply portion (69), it is formed at least one of described lateral body (31a, 31b), in the back pressure space (77) eventually Tie after the connection with the intermediate pressure supply unit (67), the high voltage supply portion is communicated in collecting will be from compression section to ejection The back pressure space of the blade groove (75) for the blade (25) that the discharge chambe (33a, 33b, 33c) of process separates (77), and by than from compression section to the refrigerant pressure of the discharge chambe (33a, 33b, 33c) that sprays process and described The big high voltage supply of intermediate pressure to the back pressure space (77),
The high voltage supply portion (69) be divided on the direction of rotation (X) multiple supply units independent of each other (69a, 69b),
The 2nd supply unit (69b) for being located at second at least from the most upstream side of the direction of rotation (X) is formed as in a blade The back pressure space (77) of groove (75) be communicated in the 2nd supply unit during, the 2nd supply unit will not be while being communicated in institute State the back pressure space (77) of upstream side other blade grooves (75) adjacent with the blade groove (75) of direction of rotation (X) Shape, and the high voltage supply portion (69) be formed as and meanwhile connect a blade groove (75) the back pressure space (77) and in the back of the body of the upstream side of the direction of rotation (X) other blade grooves (75) adjacent with the blade groove (75) Press the scope of space (77).
2. gas compressor (1) according to claim 1, it is characterised in that
The supply unit (69a) of adjacent upstream side and the supply unit (69b) in downstream are in the rotation on the direction of rotation (X) Turn that there is interval on direction (X), the interval causes：In the back pressure space (77) while supply unit with the upstream side When (69a) is connected with the supply unit (69b) in the downstream, the company between the back pressure space and each supply unit (69a, 69b) The minimum for adding up to the high voltage supply path (71a, 71b) for supplying high pressure to each supply unit (69a, 69b) respectively of logical sectional area It is more than passage sections product.
3. gas compressor (1) according to claim 1 or 2, it is characterised in that
The supply unit (69a) of upstream side and the supply unit (69b) in downstream are (69c) spaced apart on the direction of rotation (X) Ground is configured,
Interval (69c) configuration exists：In the reduction of the protrusion stroke relative to the blade groove (75) of the blade (25) Rate is the rotational position of the rotor (23) below defined threshold value, the interval (69c) and the back pressure space (77) The position of connection.
4. gas compressor (1) according to claim 3, it is characterised in that
The inner peripheral surface (33d) of the cylinder chamber (33) is formed as being continuously formed successively on the direction of rotation (X)：
(a) it is slidingly contacted at the protrusion stroke companion from the blade groove (75) of the blade (25) of the inner peripheral surface (33d) With the rotation of the direction direction of rotation (X) of the rotor (23) increased region (33e)；
(b) it is slidingly contacted at the protrusion stroke companion from the blade groove (75) of the blade (25) of the inner peripheral surface (33d) The region (33f) of reduction with the rotation of the direction direction of rotation (X) of the rotor (23)；
(c) it is slidingly contacted at the protrusion stroke companion from the blade groove (75) of the blade (25) of the inner peripheral surface (33d) Reduce with the rotation of the direction direction of rotation (X) of the rotor (23) and its slip ratio described in (b) region The small region of slip (33g)；And,
(d) it is slidingly contacted at the protrusion stroke companion from the blade groove (75) of the blade (25) of the inner peripheral surface (33d) Reduce with the rotation of the direction direction of rotation (X) of the rotor (23) and its slip ratio described in (c) region Slip is big and the small region (33f) of the slip in the region of (b) than described in,
Interval (69c) configuration exists：The area of (c) of the inner peripheral surface (33d) is slidingly contacted in the blade (25) During domain (33g), the back pressure space (77) of the blade groove (75) of the interval (69c) with housing the blade (25) connects Position.
5. the gas compressor (1) according to any one of Claims 1 to 4, it is characterised in that
2nd supply unit (69b) has than the rotation positioned at the 2nd supply unit (69b) on the direction of rotation (X) Turn the space of the big size of size of the 1st supply unit (69a) of the upstream side in direction (X).
CN201580070926.0A 2014-12-24 2015-12-16 gas compressor Expired - Fee Related CN107110158B (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2014260492A JP5878971B1 (en) 2014-12-24 2014-12-24 Gas compressor
JP2014-260492 2014-12-24
JP2014-260500 2014-12-24
JP2014260491A JP5878970B1 (en) 2014-12-24 2014-12-24 Gas compressor
JP2014-260491 2014-12-24
JP2014260500A JP5831619B1 (en) 2014-12-24 2014-12-24 Gas compressor
PCT/JP2015/085193 WO2016104274A1 (en) 2014-12-24 2015-12-16 Gas compressor

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CN107110158A true CN107110158A (en) 2017-08-29
CN107110158B CN107110158B (en) 2019-01-22

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US (1) US20170350391A1 (en)
EP (1) EP3239530A4 (en)
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WO (1) WO2016104274A1 (en)

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CN111997898A (en) * 2020-09-10 2020-11-27 常州康普瑞汽车空调有限公司 Backpressure optimization structure and method for rotary vane compressor

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EP3239530A4 (en) 2018-01-10
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WO2016104274A1 (en) 2016-06-30
US20170350391A1 (en) 2017-12-07

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