CN101813091A - Closed rotary compressor - Google Patents
Closed rotary compressor Download PDFInfo
- Publication number
- CN101813091A CN101813091A CN201010121485A CN201010121485A CN101813091A CN 101813091 A CN101813091 A CN 101813091A CN 201010121485 A CN201010121485 A CN 201010121485A CN 201010121485 A CN201010121485 A CN 201010121485A CN 101813091 A CN101813091 A CN 101813091A
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- China
- Prior art keywords
- compressing member
- seal container
- rotor
- rotary compressor
- stator
- 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.)
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Classifications
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- 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
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- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
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- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
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- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/008—Hermetic pumps
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- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- 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
- F04C18/356—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 outer member
- F04C18/3562—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 outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation
- F04C18/3564—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 outer member the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
Abstract
The invention provides a kind of closed rotary compressor, can promote that the oil in the seal container separates and the oily discharge to the compressor outside of minimizing.This closed rotary compressor has: tap hole (28), and it is located at the relative position of end face with rotor (7), will be discharged in the seal container (2) from first and second compressed refrigerant that rotates compressing member (10,20); Refrigerant flow path, it will be from the compressed refrigerant of this tap hole (28) discharge, compare the space (A) of the end face of rotor (7) to coil-end (37E) encirclement of the outstanding stator (5) of rotary compressor structure portion (3) side (rotation compressing member side) via utilization, by the inter-air space between rotor (7) and the stator (5), to rotary compressor structure portion (3) side (the rotation compressing member side) guiding of electric element (4), the outlet of the rotary compressor structure portion side of this refrigerant flow path (rotation compressing member side) is relative with the internal face of seal container.
Description
Technical field
The present invention relates to a kind of closed rotary compressor that in seal container, has electric element and rotation compressing member.Particularly, relate to following closed rotary compressor, the rotation compressing member is taken in bottom in seal container, above this rotation compressing member, take in electric element, electric element constitutes has stator and rotor, and this rotor is to enable to utilize the magnetic field that is produced by this stator on the mode interpolation of rotating and the running shaft that is fixed in the bent axle that is also used as the rotary driving compressing member.
Background technique
In the past, this closed rotary compressor constituted and had rotation compressing member that is accommodated in the bottom in the seal container and the electric element that is accommodated in its top.Electric element constitutes has stator and rotor, this stator is installed in the form of a ring along the inner peripheral surface of the upper space of seal container, and this rotor is to enable to utilize the magnetic field that is produced by this stator on the mode interpolation of rotating and the running shaft that is fixed in the bent axle that is also used as the rotary driving compressing member.
The rotation compressing member constitutes and has: cylinder body, with the eccentric part that is formed at running shaft chimeric and in cylinder body, carry out the roller of eccentric rotation, with the cylinder body butt and will be divided into the blade of low pressure chamber side and hyperbaric chamber side in the cylinder body.In addition, the oil that accumulates the slide part that is useful on lubricated this rotation compressing member and running shaft etc. at the seal container inner bottom part.
And, when the stator winding electrifying of the stator of electric element is produced rotating magnetic field, utilize this magnetic field, be located at inboard rotor rotation.Utilize this rotation, the roller chimeric with the eccentric part of running shaft carries out the off-centre rotation in cylinder body.Thus, low pressure refrigerant is sucked into the low pressure chamber side in the cylinder body, utilizes the action of roller and blade to be compressed.The refrigerant gas that is compressed in cylinder body and becomes High Temperature High Pressure is discharged in the exhaust silencer via exhaust port from the hyperbaric chamber side.Be discharged to the refrigerant gas in the exhaust silencer, in this exhaust silencer and seal container, be communicated with and the electric element of points upwards and the tap hole that is provided with is discharged in the seal container.At this moment, supplying to the oil of rotation in the compressing member becomes vaporific and is blended in the refrigerant gas, and this oil and refrigerant gas are discharged in the seal container in the lump.
Be discharged to the interior refrigerant gas of seal container by being formed at the refrigerant passage in the electric element, the discharge tube of being located at the electric element upside certainly is discharged to outside (for example with reference to patent documentation 1).
Patent documentation 1:(Japan) spy opens flat 9-151885 communique
Yet, in this existing closed rotary compressor, can not carry out separating of refrigerant gas and oil in seal container fully, it is many to be discharged to outside oil mass from discharge tube, because of oil to the outflow of external circuit exist performance reduce, to the problem of the fuel feeding deficiency of slide part.
Summary of the invention
The present invention makes for the problem that solves above-mentioned prior art, and its purpose is to provide a kind of closed rotary compressor, can promote that the oil in the seal container separates and the oily discharge to the compressor outside of minimizing.
Closed rotary compressor of the present invention, the rotation compressing member is taken in bottom in seal container, above this rotation compressing member, take in electric element, this electric element constitutes has stator and rotor, this rotor is to enable to utilize by the magnetic field of this stator generation mode interpolation of rotating and the running shaft that is fixed in the bent axle that is also used as the rotary driving compressing member, this closed rotary compressor is characterised in that, have: tap hole, it is located at the position relative with the end face of rotor, and the compressed refrigerant of the compressing member of spinning in the future is discharged in the seal container; Refrigerant flow path, it will be from the compressed refrigerant of this tap hole discharge, compare the space of the end face of rotor to the coil-end encirclement of the side-prominent stator of rotation compressing member via utilization, by the inter-air space between rotor and the stator, opposite with the rotation compressing member one side directed to electric element; Wherein, the internal face of the outlet of a side opposite with the rotation compressing member of this refrigerant flow path and seal container is relative.
The closed rotary compressor of second aspect invention, on the basis of above-mentioned first aspect invention, it is characterized in that the opening of a side of the discharge tube that the compressed refrigerant in the seal container is guided points to the inboard that constitutes the refrigerant flow path of ring-type in seal container outside seal container.
The closed rotary compressor of third aspect invention, on the basis of above-mentioned second aspect invention, it is characterized in that distance internal face, on the running shaft direction from rotor and the end face opposite side of rotation compressing member to seal container is more than the 25mm.
According to the present invention, the rotation compressing member is taken in bottom in seal container, above this rotation compressing member, take in electric element, this electric element constitutes has stator and rotor, this rotor is to enable to utilize by the magnetic field of this stator generation mode interpolation of rotating and the running shaft that is fixed in the bent axle that is also used as the rotary driving compressing member, this closed rotary compressor is characterised in that, have: tap hole, it is located at the position relative with the end face of rotor, and the compressed refrigerant of the compressing member of spinning in the future is discharged in the seal container; Refrigerant flow path, it will be from the compressed refrigerant of this tap hole discharge, compare the space of the end face of rotor to the coil-end encirclement of the side-prominent stator of rotation compressing member via utilization, by the inter-air space between rotor and the stator, opposite with the rotation compressing member one side directed to electric element, therefore, can make the compressed refrigerant of discharging and the end face of rotor rotated collide and it is stirred from tap hole.Thus, can promote the oil in the space that surrounds by the coil-end of stator to separate.
In addition,, in the process of the inter-air space by stator and rotor, stirred by the wall of stator and rotor rotated through the compressed refrigerant in the space that surrounded by the coil-end of said stator, therefore, further separating oil.
And, because the outlet of a side opposite with the rotation compressing member of this refrigerant flow path is relative with the internal face of seal container, therefore, run into the internal face of seal container by refrigerant flow path and the refrigeration agent that arrives electric element with the opposite side of rotation compressing member, and after electric element and the spatial diffusion opposite side of rotation compressing member, be discharged to outside the seal container.Like this, the diffusion of utilization in the space of a side opposite of electric element, further separating oil with the rotation compressing member.Thus, can carry out oil effectively and separate, and reduce the oil of outside mechanism, discharging significantly.
The closed rotary compressor of second aspect invention is on the basis of foregoing invention, the opening of one side of the discharge tube that the compressed refrigerant in the seal container is guided outside seal container, sensing constitutes the inboard of the refrigerant flow path of ring-type in seal container, therefore, the compressed refrigerant that can suppress to arrive through refrigerant flow path a side opposite with the rotation compressing member of electric element directly arrives discharge tube.Thus, can improve oil and separate performance.
The closed rotary compressor of third aspect invention, on the basis of above-mentioned second aspect invention, distance internal face, on the running shaft direction from rotor and the end face opposite side of rotation compressing member to seal container is more than the 25mm, thus, can fully guarantee electric element with the opposite side of rotation compressing member in oil separation space, and can further improve oil and separate performance.
Description of drawings
Fig. 1 is the vertical profile side view that simple expression is suitable for the closed rotary compressor of one embodiment of the present invention;
Fig. 2 is the plan view of exhaust silencer of tap hole with closed rotary compressor of Fig. 1;
Fig. 3 is the plan view of exhaust silencer with other tap hole;
Fig. 4 is the plan view of exhaust silencer with other tap hole;
Fig. 5 is the plan view of exhaust silencer with other tap hole;
Fig. 6 is the plan view with exhaust silencer of existing tap hole.
Description of reference numerals
1 rotary compressor (closed rotary compressor), 2 seal containers
2A vessel 2B end cap 3 rotary compressor structure portions
4 electric elements, 5 stators, 7 rotors, 8 running shafts
9 refrigerant discharge leaders, 10 first rotation compressing members, 12,22 cylinder bodies
13,23 eccentric parts, 14,24 rollers, 15,25 support units
16,26 suck path 17,27 exhaust silencer 17A, 27A lid
19,29 drain passageways, 20 second rotation compressing members
28 (28a, 28b, 28c) tap hole, 30 intermediate section dividing plates
35 terminals, 36 stator cores, 37 stator coil 37E coil-end
38 rotor cores, 39 cannelures (oil return path)
40,41 refrigeration agent ingress pipes, 50 oil pumps, 62 holes, 65 accumulators
Embodiment
Below, describe the mode of execution of closed rotary compressor of the present invention in detail based on accompanying drawing.Fig. 1 is simple expression has the internal high pressure type rotary compressor 1 of first and second rotation compressing member as an embodiment who is suitable for a closed rotary compressor of the present invention vertical profile side view.
The rotary compressor 1 of present embodiment is following twin-tub closed rotary compressor, promptly take in rotary compressor structure portion 3, take in electric element 4 above it with first and second rotation compressing member 10,20 in the bottom of the inner space of the vertical cylindric seal container 2 that constitutes by steel plate.
Seal container 2 constitutes to have: the vessel 2A that takes in electric element 4 and first and second rotation compressing member 10,20 (rotary compressor structure portion 3); Roughly bowl-shape end cap (lid) 2B with the sealing of the upper opening of this vessel 2A; Base part 2C with the sealing of the lower openings of vessel 2A.End face at this end cap 2B is formed with not shown circular mounting hole, and terminal (omission distribution) 35 is installed in this mounting hole, and this terminal 35 is used to feed electrical power to the electric element 4 of the top that is positioned at seal container 2.And, refrigerant discharge leader 9 described later is installed at the central part of this end cap 2B.
Portion is accumulated as oil in the space of the bottom in this seal container 2, at this, accumulates the oil of the slide part that is useful on lubricated first and second rotation compressing member 10,20 and running shaft 8 etc.In addition, the exterior bottom at base part 2C is provided with installation pedestal 70.
Rotary compressor structure portion 3 constitute have the first rotation compressing member 10, the second rotation compressing member 20 and by the intermediate section dividing plate 30 of two rotation compressing members, 10,20 clampings.The rotary compressor structure portion 3 of present embodiment is provided with the first rotation compressing member 10 across intermediate section dividing plate 30 at downside, is provided with the second rotation compressing member 20 at upside.The first rotation compressing member 10 and the second rotation compressing member 20 constitute to have: be disposed at the cylinder body 12,22 of intermediate section dividing plate about in the of 30; The phase differences that in cylinder body 12,22, have 180 degree, and the roller 14,24 that each cylinder body 12,22 in respectively carry out eccentric rotation chimeric with the eccentric part 13,23 of being located at running shaft 8; With each roller 14,24 butt and each cylinder body 12,22 is divided into the not shown blade of low pressure chamber side and hyperbaric chamber side respectively; With the opening surface sealing of the opening surface of cylinder body 12 downsides and cylinder body 22 upsides and be also used as the lower support parts 15 and the upper support parts 25 as support unit of the bearing of running shaft 8.
On last lower cylinder body 12,22, be formed with the suction path 16,26 that the pressing chamber with each cylinder body 12,22 inside is communicated with respectively.In addition, be respectively equipped with exhaust silencer (マ Off ラ) 17,27 in a side (downside) opposite of lower support parts 15 and electric element 4 sides (upside) of upper support parts 25 with electric element 4.
The exhaust silencer 17 that is positioned at lower support parts 15 downsides covers the bottom surface of lower support parts 15 by roughly bowl-shape lower cover 17A and forms, and this lower cover 17A has the hole that the lower bearing 15A that makes running shaft 8 and lower support parts 15 connects at the center.Be connected via drain passageway 19 in this exhaust silencer 17 and the cylinder body 12, the switching of expulsion valve 19V of opening of exhaust silencer 17 sides of this drain passageway 19 is located in utilization, can exhaust silencer 17 in and in the cylinder body 12 (the hyperbaric chamber side in the cylinder body 12) be communicated with.
In addition, the exhaust silencer 27 that is positioned at upper support parts 25 upsides covers the end face of upper support parts 25 by roughly bowl-shape loam cake 27A and forms, and this loam cake 27A has the hole that the upper bearing 25A that makes running shaft 8 and upper support parts 25 connects at the center.In addition, be connected via drain passageway 29 in this exhaust silencer 27 and the cylinder body 22, the switching of expulsion valve 29V of opening of exhaust silencer 27 sides of this drain passageway 29 is located in utilization, can exhaust silencer 27 in and in the cylinder body 22 (the hyperbaric chamber side in the cylinder body 22) be communicated with.
Above-mentioned exhaust silencer 17 and exhaust silencer 27 utilize the not shown communication path connection that connects lower support parts 15, lower cylinder body 12, intermediate section dividing plate 30, upper cylinder body 22 and upper support parts 25 along axis direction (above-below direction).
As shown in Figure 2, on the loam cake 27A of formation exhaust silencer 27, be formed with a plurality of tap holes 28 that are used for to be discharged to from the compressed refrigerant of each rotation compressing member 10,20 in the seal container 2.Tap hole 28 is the circular ports that connect loam cake 27A along axis direction (above-below direction), any tap hole 28 all is arranged on as upper/lower positions, promptly is located near the of running shaft 8 that loam cake 27A center is provided with and relative with the end face (lower end surface) of the rotor 7 of electric element 4.That is, each tap hole 28 forms in the mode of the end face (lower end surface) of sensing rotor 7.
The flow direction of the refrigerant gas in the exhaust silencer 27 of present embodiment shown in Figure 2 be counterclockwise, and aperture, quantity and the configuration of consideration tap hole 28 make the pulsation that can effectively absorb (reduction) refrigerant gas in exhaust silencer 27.The tap hole 28 of present embodiment shown in Figure 2 by internal diameter be 10mm tap hole 28a, with running shaft 8 be center and this tap hole 28a roughly symmetrically the internal diameter of configuration be that tap hole 28b, the internal diameter of 8mm is that three tap hole 28c of 6mm constitute.In addition, relatively be provided with the not shown valve that is used to discharge with tap hole 28b.In addition, reference character 49 shown in Figure 2 is for being formed at the groove of loam cake 27A.
In addition, reference character 75 shown in Figure 1 is for constituting the fixing bolt of one with upper support parts 25, upper cylinder body 22, intermediate section dividing plate 30, lower cylinder body 12 and lower support parts 15.
On the other hand, aforementioned electric element 4 constitutes and has: the inner peripheral surface along the upper space of seal container 2 welds fixing stator 5 in the form of a ring, to enable utilizing the magnetic field that is produced by this stator 5 and rotor 7 of the mode interpolation of rotating.
In addition, upper and lower end face in rotor 7 (rotor core 38), be provided with the balace weight 42,43 that is used to adjust weight balancing, this balace weight 42,43 is used to suppress the vibration that is produced by the off-centre rotation of running shaft 8 and make spin stabilizationization, and the off-centre rotation of this running shaft 8 produces because of the eccentric part 13,23 of aforementioned first and second rotation compressing member 10,20, the deviation of weight of roller 14,24.Be provided with the check plate 45 of balace weight above the balace weight 42 at this.In addition, the above-mentioned parts ( balace weight 42,43 and check plate 45) that are disposed at these rotor core 38 end faces utilize rivet 47 to be fixed in rotor core 38.
And, the distance D on running shaft 8 directions from the end face of the side opposite of rotor 7 to the internal face of seal container 2 with rotary compressor structure portion 3, in the present embodiment promptly, check plate 45 end faces of being located at rotor 7 upper-end surfaces certainly to the distance D of the internal face of the end cap 2B of the seal container 2 corresponding with its top is made as more than the 25mm.
In addition, on electric element 4, be formed with refrigerant flow path, the side opposite that the compressed refrigerant that this refrigerant flow path is used for being discharged to rotary compressor structure portion 3 in the seal container 2 and the space A between the electric element 4 from aforementioned tap hole 28 (being tap hole 28a, 28b and 28c) is directed to electric element 4 with rotary compressor structure portion 3.This refrigerant flow path is made of the inter-air space S2 between space S 1, rotor 7 and the stator 5, and wherein, space S 1 is by surrounding from the end coil of rotor 7 end faces (lower end surface) to the outstanding described stator 5 of rotary compressor structure portion 3 sides (downside).
Promptly, rotary compressor structure portion 3 in tap hole 28 is discharged to seal container 2 and the refrigeration agent of the space A between the electric element 4, through by the space S 1 of surrounding to the end coil of the outstanding stator 5 of rotary compressor structure portion 3 sides (downside) from the end face of rotor 7, by the inter-air space S2 of the ring-type between rotor 7 and the stator 5, be discharged to the internal face of seal container 2 and the space between the electric element (being the space of a side opposite of the electric element 4 in the seal container 2) B with rotary compressor structure portion 3 from its upper end open (being the outlet of refrigerant flow path).The outlet (being the upper end open of inter-air space S2) of a side opposite with rotary compressor structure portion 3 of this refrigerant flow path is relative with the internal face of seal container 2.
On the other hand, in the side of the vessel 2A of seal container 2, be welded with sleeve 60,61 respectively in the position corresponding with the suction path 16,26 of each cylinder body 12,22.This sleeve adjacency about in the of 60,61.
In addition, in sleeve 60, insert and be connected with the refrigeration agent ingress pipe 40 that is used for refrigerant gas is imported to lower cylinder body 12, an end of this refrigeration agent ingress pipe 40 is communicated with the suction path 16 of lower cylinder body 12.The upper opening of the other end of refrigeration agent ingress pipe 40 in accumulator (ア キ ユ system レ one タ) 65.
In sleeve 61, insert and be connected with the refrigeration agent ingress pipe 41 that is used for refrigerant gas is imported to upper cylinder body 22, an end of this refrigeration agent ingress pipe 41 is communicated with the suction path 26 of upper cylinder body 22.The other end of refrigeration agent ingress pipe 41 is with described refrigeration agent ingress pipe 40 upper opening in accumulator 65 similarly.
Above-mentioned accumulator 65 is the jars that suck the gas-liquid separation of refrigeration agent, is installed on the upper side of the vessel 2A of seal container 2 via carriage 67.In addition, refrigeration agent ingress pipe 40 and refrigeration agent ingress pipe 41 insert accumulator 65 from the bottom, and the opening of the other end lays respectively at the top in this accumulator 65.In addition, an end of refrigerant piping 68 inserts the upper end portion in the accumulator 65.
On the other hand, on the end cap 2B of seal container 2, be that approximate centre portion is formed with circular hole 62 in the position corresponding with running shaft 8.In this hole 62, insert and be connected with aforementioned refrigerant discharge leader 9, the upper opening of an end in seal container 2 of this refrigerant discharge leader 9.The opening of one end of this refrigerant discharge leader 9 points to the inboard of aforementioned ring-type refrigerant flow path (being the inter-air space S2 between stator 5 and the rotor 7).
Utilize the action of the rotary compressor 1 of above structure explanation present embodiment.When via terminal 35 and not shown distribution during to stator coil 37 energisings of electric element 4, electric element 4 startings and make rotor 7 rotations.Utilize this rotation, be embedded in the roller 14,24 of the eccentric part 13,23 that is wholely set with running shaft 8, in each cylinder body 12,22, carry out the off-centre rotation.
Thus, the spin refrigerant piping 68 of rotatable compressor 1 of low pressure refrigerant flows in the accumulators 65.Low pressure refrigerant in the inflow accumulator 65 only has refrigerant gas to enter in each refrigeration agent ingress pipe 40,41 of this accumulator 65 inner openings after this carries out gas-liquid separation.Enter the low pressure refrigerant gas of refrigeration agent ingress pipe 40, be sucked into the first low pressure chamber side of rotating the cylinder body 12 of compressing member 10 through sucking path 16.
The refrigerant gas that is sucked into the low pressure chamber side of cylinder body 40 utilizes the action of roller 14 and not shown blade to be compressed, and becomes the refrigerant gas of High Temperature High Pressure, and side is discharged in the exhaust silencer 17 by drain passageway 16 from the hyperbaric chamber of cylinder body 12.The refrigerant gas that is discharged in the exhaust silencer 17 is discharged in the exhaust silencer 27 through not shown communication path, and is converged by the second rotation compressing member, 20 refrigerant compressed gases.
On the other hand, the low pressure refrigerant gas that enters refrigeration agent ingress pipe 41 is sucked into the low pressure chamber side of the upper cylinder body 22 of the second rotation compressing member 20 through sucking path 26.The refrigerant gas that is sucked into the low pressure chamber side of upper cylinder body 22 utilizes the action of roller 24 and not shown blade to be compressed, become the refrigerant gas of High Temperature High Pressure, be discharged in the exhaust silencer 27 by drain passageway 29 from the hyperbaric chamber of upper cylinder body 22 side, with from above-mentioned first the rotation compressing member 12 refrigerant gas converge.
Then, the refrigerant gas utilization after converging connects the tap hole 28 that forms at loam cake 27A and is discharged to rotary compressor structure portion 3 in the seal container 2 and the space A between the electric element 4.At this moment, the oil that supplies to the slide part etc. of rotary compressor structure portion 3 becomes vaporific and sneaks in the refrigerant gas, and oil is also discharged from each tap hole 28 with refrigerant gas.In addition, arrow shown in Figure 1 is represented the flow direction of the oil in compressed refrigerant is discharged to seal container 2.
At this, because tap hole 28 is arranged at the relative position, lower end surface with the rotor core 38 of rotor 7, therefore, compressed refrigerant from tap hole 28 discharges, run into the lower end surface of the rotor core 38 of the rotor 7 that is rotated, and stirred and diffuse to the space S 1 of being surrounded by the coil-end 37E of the stator coil 37 of stator 5.
At this, use Fig. 6 explanation to be located at the existing tap hole 128 of loam cake 27A.In Fig. 6, reference character 128a is that internal diameter is the tap hole of 10mm, and 128b is that internal diameter is the tap hole of 8mm, and 128c is that internal diameter is the tap hole of 6mm, and these tap holes are all considered the pulsation assimilation effect of the refrigerant gas in the exhaust silencer 27 and disposed.As shown in Figure 6, existing tap hole 128 all is located at as upper/lower positions, promptly near the outer periphery of leaving from the center of loam cake 27A and relative with the inter-air space S2 between the stator 5 with the rotor 7 of electric element 4.That is, the compressed refrigerant in tap hole 128 is expelled to seal container 2 flows directly into to each tap hole 128 rotor 7 pointed and the inter-air space S2 between the stator 5.
In addition, except that this inter-air space S2, be formed for to opposite with rotary compressor structure portion 3 one of electric element 4 side directed other refrigerant flow path, for example, the refrigerant passage that formation connects rotor 7 and the space A between rotary compressor structure portion 3 and the electric element 4 is communicated with the internal face and the space B between the electric element 4 of seal container 2 along axis direction (above-below direction), this refrigerant passage be will import from the compressed refrigerant that tap hole is discharged, this refrigerant passage and air gap space S 2 perhaps imported.
Like this, in existing structure, the compressed refrigerant of discharging from tap hole nearly all can not carry out oil separation at the space A between rotary compressor structure portion 3 and the electric element 4, is used for to opposite with rotary compressor structure portion 3 one of electric element 4 side directed refrigerant flow path but flow directly into.
Relative therewith, as described herein, by end face (lower end surface) tap hole 28 is set relatively, can makes compressed refrigerant in tap hole 28 is expelled to seal container 2 meet the lower end surface of the rotor core 38 of this tap hole 28 rotor 7 pointed with the rotor core 38 of rotor 7.Thus, can oil be separated in rotary compressor structure portion 3 in the seal container 2 and the space A between the electric element 4.Particularly, by making the lower end surface of running into the rotor core 38 of the rotor 7 that is rotated from the compressed refrigerant of tap hole 28, thus, can utilize the rotation of rotor core 38, stir refrigeration agent and make it diffuse to the whole space S 1 of being surrounded widely by the coil-end 37E of the stator coil 37 of stator 5.Thus, the oil in the space S 1 that can promote to be surrounded by the coil-end 37E of stator 5 separates.
After this, the refrigeration agent of this space S 1 of process is by the inter-air space S2 between stator 5 and the rotor 7.Because this inter-air space S2 is the small gap that is formed between stator 5 and the rotor 7, and, be positioned at rotor 7 rotations of this small inboard, gap, therefore, be subjected to the influence of rotor rotated 7 by the refrigeration agent of space S 2, flow as follows, in this space S 2, rise when the sense of rotation of the son 7 that promptly rotates is rotated.Thus, oil is further separated from refrigeration agent.
By the inter-air space S2 between stator 5 and the rotor 7 go forward side by side a step carry out oil content from after refrigeration agent, the space B of the outlet of this space S 2 side opposite that be expelled to electric element 4 certainly with rotary compressor structure portion 3.At this moment, because the internal face of this outlet and seal container 2 relatively is provided with, therefore, the internal face of the refrigeration agent of this outlet discharge and seal container 2 collides and spreads in space B certainly.Like this, the diffusion in the space B of a side opposite with rotary compressor structure portion 3 of utilizing electric element 4 can make oil further separate.
Particularly, be used for to be diffused into an end opening of this refrigerant discharge leader 9 that the compressed refrigerants in the space B in the seal container 2 guide outside seal container 2, sensing constitutes the inboard of the refrigerant flow path (being aforesaid inter-air space S2) of ring-type in seal container 2, the compressed refrigerant of a side opposite with rotary compressor structure portion 3 that therefore, can suppress to arrive electric element 4 via refrigerant flow path directly arrives refrigerant discharge leader 9.Thus, can improve oil and separate performance.
And, as previously mentioned, the distance D of the internal face of the end cap 2B from the end face of the check plate 45 of being located at rotor 7 upper-end surfaces to the seal container 2 corresponding with its top forms more than the 25mm, therefore, the oil separation space of the side opposite with rotary compressor structure portion 3 that can fully guarantee electric element 4 can further improve oil and separate performance.
After this, the refrigeration agent that is diffused into space B enters refrigerant discharge leader 9 from pointing to the inboard opening of refrigerant flow path (inter-air space S2), and is discharged to outside the seal container 2.
On the other hand,, flow down in the aforementioned cannelure 39 between vessel 2A that is formed at seal container 2 and stator 4 from the oil that refrigeration agent separates in this space B, the oil that turns back to seal container 2 inner bottom parts accumulates portion.
As above-mentioned detailed argumentation,, can be in this seal container 2 separate with compressed refrigerant being discharged to oil seal container 2 in the lump effectively, thereby can significantly reduce from the oil of refrigeration agent discharge tube 9 to rotary compressor 1 outside discharge according to the present invention.Thus, also can supply with oil to the slide part of rotary compressor 1 swimmingly, thereby can guarantee the performance of rotary compressor 1, and can seek to improve reliability.
And, be discharged to the oil mass of rotary compressor 1 outside by minimizing, also can suppress following unfavorable condition, promptly bring harmful effect to external circuit because of this oil.
In addition, in the present invention, tap hole is arranged on the position relative with the end face of rotor and gets final product, consideration can absorb the pulsation of the refrigerant gas in (reduction) exhaust silencer 27 effectively and be provided with, and is not limited to diameter, quantity and the configuration etc. of embodiment's shown in Figure 2 tap hole 28.For example, as shown in Figure 3, six tap hole 28c that both can be 6mm with internal diameter are the configuration of center approximate equality ground with running shaft 8, also can be as shown in Figure 4, and be that four the tap hole 28b of 8mm and a tap hole 28c that internal diameter is 6mm are arranged near the running shaft 8 with internal diameter.In addition, as shown in Figure 5, also can be only be that the tap hole 28a of 10mm and tap hole 28b that internal diameter is 8mm constitute by internal diameter, it is roughly symmetry of center and this tap hole 28a that this tap hole 28b is configured to running shaft 8.
In addition, though illustrated in the present embodiment the present invention is applicable to the twin-tub closed rotary compressor, be not limited to this, even if for example be applicable to single cylinder closed rotary compressor or multistage compression type compressor, the present invention also is effective.
Claims (3)
1. closed rotary compressor, the rotation compressing member is taken in bottom in seal container, above this rotation compressing member, take in electric element, this electric element constitutes has stator and rotor, this rotor is the mode interpolation of rotating and be fixed in the running shaft that is also used as the bent axle that drives described rotation compressing member to enable to utilize the magnetic field that is produced by this stator, this closed rotary compressor is characterised in that to have:
Tap hole, it is located at the position relative with the end face of described rotor, and will be discharged in the described seal container from the compressed refrigerant of described rotation compressing member;
Refrigerant flow path, it will be from the compressed refrigerant of this tap hole discharge, compare the space of the end face of described rotor to the coil-end encirclement of the side-prominent described stator of described rotation compressing member via utilization, by the inter-air space between described rotor and the described stator, opposite with the rotation compressing member one side directed to described electric element;
The outlet of a side opposite with the rotation compressing member of this refrigerant flow path is relative with the internal face of described seal container.
2. closed rotary compressor as claimed in claim 1, it is characterized in that, the opening of one side of the discharge tube that the compressed refrigerant in the described seal container is guided outside seal container points to the inboard that constitutes the described refrigerant flow path of ring-type in described seal container.
3. closed rotary compressor as claimed in claim 2 is characterized in that, distance internal face, on described running shaft direction from described rotor and the end face opposite side of rotation compressing member to described seal container is more than the 25mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP037815/09 | 2009-02-20 | ||
| JP2009037815A JP2010190182A (en) | 2009-02-20 | 2009-02-20 | Sealed type rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101813091A true CN101813091A (en) | 2010-08-25 |
Family
ID=42045429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010121485A Pending CN101813091A (en) | 2009-02-20 | 2010-02-11 | Closed rotary compressor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20100215524A1 (en) |
| EP (1) | EP2221483A2 (en) |
| JP (1) | JP2010190182A (en) |
| KR (1) | KR101164322B1 (en) |
| CN (1) | CN101813091A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915375A (en) * | 2019-04-17 | 2019-06-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Pump assembly and compressor |
| CN114423948A (en) * | 2019-10-03 | 2022-04-29 | 三菱电机株式会社 | Hermetic refrigerant compressor |
| CN116670396A (en) * | 2021-03-16 | 2023-08-29 | 大金工业株式会社 | Compression device and refrigeration device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103782038B (en) * | 2012-07-09 | 2016-08-17 | 松下知识产权经营株式会社 | Rotary compressor |
| WO2018168044A1 (en) * | 2017-03-15 | 2018-09-20 | 東芝キヤリア株式会社 | Rotary compressor and refrigeration cycle device |
| CN112761950B (en) * | 2019-11-01 | 2024-03-08 | 上海海立电器有限公司 | Compressor |
| KR102409626B1 (en) * | 2020-08-19 | 2022-06-16 | 엘지전자 주식회사 | Scroll compressor |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR101164322B1 (en) | 2012-07-09 |
| KR20100095359A (en) | 2010-08-30 |
| EP2221483A2 (en) | 2010-08-25 |
| JP2010190182A (en) | 2010-09-02 |
| US20100215524A1 (en) | 2010-08-26 |
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Application publication date: 20100825 |