CN102052319A - Steam compressor - Google Patents
Steam compressor Download PDFInfo
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- CN102052319A CN102052319A CN2010105349909A CN201010534990A CN102052319A CN 102052319 A CN102052319 A CN 102052319A CN 2010105349909 A CN2010105349909 A CN 2010105349909A CN 201010534990 A CN201010534990 A CN 201010534990A CN 102052319 A CN102052319 A CN 102052319A
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Abstract
The invention provides a steam compressor, wherein the atmosphere is prevented from flowing into the vaporium even when the steam pressure in the vaporium is lower than the pressure of the atmosphere while the generation efficiency of the compressed steam is restrained.The steam compressor is equipped with a first inhalation seal part, a second inhalation seal part, a non-contact first ejection seal part and a communication part.The first inhalation seal part arranged closer to the vaporium than the connection part of the atmosphere opening path in the inhalation shaft seal chamber is used for preventing the steam in the vaporium from flowing to the inhalation atmosphere opening path.The second inhalation seal part arranged between the connection part of the atmosphere opening path and the first inhalation seal part in the inhalation shaft seal chamber is used for preventing the steam from flowing to the inhalation atmosphere opening path.The non-contact first ejection seal part arranged in the ejection shaft seal chamber is used for improving the circulation resistance to the steam leaking out from the vaporium to the ejection shaft seal chamber.The sealed part of the inhalation shaft seal chamber communicates with the sealed part of the ejection shaft seal chamber by the communication part.
Description
Technical field
The present invention relates to a kind of vapour compression machine.
Background technique
Known all the time a kind of vapour compression machine, it utilizes the helical rotor of rotation in the side it to be compressed (for example, with reference to following patent documentation 1) downstream in the delivery of steam that will be drawn into vaporium.
In this patent documentation 1 disclosed vapour compression machine, in framework, be provided with vaporium and two bearing shaft envelope spaces.Two bearing shaft envelope space is separated to be disposed at the upstream side and the downstream side of vaporium on the throughput direction based on the steam of described helical rotor.In addition, on framework, be provided with suction passage in the position corresponding with the end of the upstream side of vaporium, described suction passage is used for steam is imported this vaporium.And, seal the rotor shaft that is penetrated with helical rotor in space in described each bearing shaft.
Be provided with the bearing of supporting rotor axle in the bearing shaft envelope space of upstream side.In addition, in the bearing shaft envelope space of upstream side, be positioned at the zone of vaporium one side, be provided with two lip seals (リ Star プ シ one Le) with respect to described bearing.Side among these two lip seals be with prevent steam from vaporium upstream the bearing shaft envelope space of side flow out towards being provided with, and be configured in the end of vaporium side in the bearing shaft envelope space of upstream side.In addition, the opposing party in two lip seals is configured in the position between a described bearing and a described side's the lip seal in the bearing shaft envelope space of upstream side.This opposing party's lip seal be with the flow of lubricant that prevents to be filled in bearing to the vaporium side towards being provided with.And, on framework, being provided with open stream, described open stream gets up zone and atmosphere outside spatial communication between two lip seals in the bearing shaft envelope space of upstream side.
Same with the bearing shaft envelope space of upstream side, seal the bearing that the space is provided with the supporting rotor axle in the bearing shaft in downstream side.In addition, in the bearing shaft in downstream side envelope space, be positioned at the zone of vaporium side, be provided with and be used to suppress the labyrinth that steam flows out to the bearing shaft envelope space in this downstream side from vaporium or be used to prevent that lubricating grease from flowing to the lip seal of vaporium side from bearing with respect to bearing.
But, in this vapour compression machine, suck the steam of pressure below atmospheric pressure sometimes by suction passage.In this case, the pressure of the end of the upstream side of the vaporium of connection suction passage becomes and is lower than barometric pressure.On the other hand, in the bearing shaft of upstream side envelope space, the zone between two lip seals is by open stream and be communicated with airspace, thereby pressure that should the zone becomes and equates with barometric pressure.That is, suck under the situation of subatmospheric low pressure steam the become pressure of the end that is higher than the vaporium upstream side of the pressure in the zone between two lip seals at vaporium.At this moment, because the pressure difference of the end of the zone between two lip seals in the bearing shaft of upstream side envelope space and the upstream side of vaporium, exist atmosphere and flow into to vaporium, in the compressed steam of vaporium, sneak into the misgivings of atmosphere (air) from described zone.And, though separated by a described side's lip seal between the end of the upstream side of described zone and vaporium, but this lip seal be with prevent steam from vaporium upstream the bearing shaft envelope space of side flow out towards being provided with, flow into to vaporium from the bearing shaft envelope space of upstream side so be difficult to suppress atmosphere.
Therefore, in following patent documentation 2, disclose a kind of structure of vapour compression machine,, also gone for preventing from the steam of vaporium compression, to sneak into atmosphere (air) even it sucks at vaporium under the situation of subatmospheric low pressure steam.
In the vapour compression machine of this patent documentation 2, in framework, the zone between the bearing of vaporium and rotor shaft, devices spaced apart is provided with a plurality of labyrinths in the axial direction.And, in this vapour compression machine, be provided with and supply with the road, make to be connected near the space between two labyrinths of vaporium from the pipe arrangement that is connected with the ejiction opening of vaporium.That is, in this vapour compression machine, after vaporium compression, will import the space between described two labyrinths, the pressure in this space is become than higher pressure from the part of the steam of vaporium ejection.
If this structure applications is more leaned on the zone of the position of vaporium with respect to the connection part of open stream in the bearing shaft envelope space of the upstream side of above-mentioned patent documentation 1, owing to can between the end of the upstream side of zone that imports atmosphere by open stream and vaporium, form the zone that is full of high pressure steam, therefore, even under the situation of the end of the upstream side that subatmospheric low pressure steam is drawn into vaporium by suction passage, the atmosphere that also can prevent to import the bearing shaft envelope space of upstream side flows into vaporium by open stream.
The prior art document
Patent documentation 1:JP spy opens the 2008-196312 communique
Patent documentation 2:JP spy opens the 2008-57452 communique
But, should be supplied to the steam utilization machine to be used effectively originally from the steam of vaporium after by the compression of ejiction opening ejection.But, will be used to prevent that atmosphere from flowing into vaporium from the steam of vaporium ejection, the ratio of the actual steam that can effectively utilize in the compressed steam of generation is reduced, integrate and see, cause the formation efficiency of compressed steam to descend.
Summary of the invention
The present invention proposes in order to address the above problem, its objective is provides a kind of when the formation efficiency that suppresses compressed steam descends, flows into the vapour compression machine of vaporium even also can prevent atmosphere under the subatmospheric situation of the pressure of the steam that sucks in vaporium.
To achieve these goals, vapour compression machine of the present invention has:
Framework, described framework has vaporium, sucks side shaft envelope chamber, ejection side shaft envelope chamber and atmosphere opening road, described vaporium is provided with the suction port of steam in side's side of its length direction, be provided with the ejiction opening of steam in the opposing party's side of its length direction, described suction side shaft envelope chamber is communicated with the suction side of the steam of described vaporium, described ejection side shaft envelope chamber is communicated with the ejection side of the steam of described vaporium, and described atmosphere opening road is communicated with described suction side shaft envelope chamber and airspace;
The compression rotor, described compression has the press part that is contained in described vaporium and passes described each envelope chamber and the rotor shaft that extends from this press part to both sides with rotor, by described compression is pivoted with rotor, the steam of described press part in will sucking described vaporium compresses described steam when being sent to described ejection oral-lateral;
First sealed department, the connection part that is set at the described atmosphere opening of the ratio road in the described suction side shaft envelope chamber more is partial on the position of described vaporium one side, and described first sealed department is used to suppress the interior described atmosphere opening of the steam flow road of described vaporium;
Second sealed department is set on the connection part and the position between described first sealed department on the described atmosphere opening road in the described suction side shaft envelope chamber, and described second sealed department is used to suppress the described atmosphere opening of steam flow road;
The 3rd contactless sealed department is set at described ejection side shaft envelope chamber, and described the 3rd sealed department is used to improve to seal the circulating resistance of the steam that chamber spills to this ejection side shaft from described vaporium; And
Interconnecting part, described interconnecting part makes following two regional connectivities, the zone between described first sealed department and described second sealed department in the described suction side shaft of the first envelope chamber, it two is to be positioned at the zone of an opposite side with described vaporium with respect to described the 3rd sealed department in the described ejection side shaft envelope chamber.
In this vapour compression machine, the 3rd sealed department that is provided with in ejection side shaft envelope chamber is owing to be contactless, therefore, the high pressure steam after vaporium compression only has to escape on a small quantity and is arranged in the zone of an opposite side with vaporium with respect to the 3rd sealed department in the ejection side shaft envelope chamber.And, in this vapour compression machine, following two zones are communicated with by interconnecting part, the connection part with respect to the atmosphere opening road that the first sucks in the side shaft envelope chamber is arranged at first sealed department of vaporium one side and the zone between second sealed department, it two is to be positioned at the zone of an opposite side with vaporium with respect to the 3rd sealed department in the ejection side shaft envelope chamber, therefore, the steam that escapes to respect to the high pressure of the 3rd sealed department the zone of an opposite side with vaporium from vaporium is imported into the zone between first sealed department and second sealed department that sucks in the side shaft envelope chamber by interconnecting part, and is kept by two sealed departments.The result is to be full of the steam of high pressure between the position of atmosphere opening road with respect to the suction side of the steam of connection part that sucks side shaft envelope chamber and vaporium, and to form this pressure by first sealed department of both sides and the space of second sealed department maintenance.Therefore, even vaporium sucks by suction port under the situation of steam of subatmospheric low pressure,, can prevent that also being drawn into the atmosphere that sucks side shaft envelope chamber by the atmosphere opening road flows into to vaporium owing to be retained as the space of described high pressure.But, steam after the such contactless sealed department of labyrinth that existing vapour compression machine is adopted is arranged at ejection side shaft envelope chamber, inhibition compression flows out from vaporium under the situation of ejection side shaft envelope chamber, just be difficult to utilize this contactless sealed department to stop steam to spill to ejection side shaft envelope chamber fully, have small amount of steam and spill to ejection side shaft envelope chamber from vaporium.To this, in vapour compression machine of the present invention, to spill to the steam that sprays side shaft envelope chamber from vaporium by the gap that forms by the 3rd contactless sealed department and import first sealed department of suction side shaft envelope chamber and the zone between second sealed department, and can be used for preventing sucking the atmosphere inflow of side shaft envelope chamber to vaporium by the importing of atmosphere opening road.That is, utilized originally and sealed the steam that the chamber spills in vain to the ejection side shaft, can prevent that atmosphere from flowing into to vaporium from vaporium.The result is that in this vapour compression machine, the part branch of the steam that the ejiction opening from vaporium need not be sprayed is used in and prevents that atmosphere from flowing into vaporium, the therefore minimizing of the ratio of the steam that can effectively utilize in the compressed steam that can suppress to generate.Therefore, in this vapour compression machine, in the decline of the formation efficiency that suppresses compressed steam, even can prevent also under the subatmospheric situation of vapor pressure that vaporium sucks that atmosphere from flowing into vaporium.
In above-mentioned vapour compression machine, can also on described framework, be provided with the grease chamber that is communicated with and accommodates lubricant oil with described suction side shaft envelope chamber, the connection part on the described atmosphere opening of the ratio road in described suction side shaft envelope chamber more is provided with lip seal by the position of described grease chamber, described lip seal has lip, and described lip is contacted with the outer circumferential face of described rotor shaft in the indoor posture towards described vaporium one side flow of this suction side shaft envelope with the lubricant oil that prevents to flow out from described grease chamber.
Sucking with the lubricant oil that prevents to flow out that the indoor posture towards vaporium one side flow of side shaft envelope is contacted with the outer circumferential face of rotor shaft and the lip seal of the lip that is provided with having from the grease chamber, when the pressure that causes the space that is positioned at vaporium one side of lip seal owing to the subatmospheric low pressure steam of vaporium suction pressure becomes the pressure in the space that is positioned at grease chamber's one side that is lower than lip seal, because the pressure difference in these two spaces, lip is crimped on the outer circumferential face of rotor shaft by brute force.And under this state, if compression is rotated for a long time with rotor, then the wearing and tearing of lip are violent, finally can impair the sealing effect of lip seal, and the flow of lubricant that existence is flowed out from the grease chamber is to the misgivings of vaporium one side.To this, in this structure, owing between lip seal and vaporium, form the space that the pressure that is kept by first sealed department and second sealed department is higher than atmospheric high pressure, therefore, even sucked at vaporium under the situation of steam of subatmospheric low pressure, the become pressure in the space that is positioned at grease chamber's one side that is lower than lip seal of the pressure that also can prevent the space that is positioned at vaporium one side of lip seal.Therefore, can prevent that lip is crimped onto the outer circumferential face of rotor shaft by brute force, the result is that the wearing and tearing that can suppress lip become aggravation.And, can prevent because the wearing and tearing of lip cause that the flow of lubricant that flows out from the grease chamber is to vaporium one side and be immersed in vaporium.
In above-mentioned vapour compression machine, preferred described vapour compression machine possesses the pressure regulator valve that is connected with described interconnecting part, this pressure regulator valve constitutes: when being higher than the setting pressure of atmospheric regulation, the pressure that imports to the steam in the zone between described first sealed department and described second sealed department the described suction side shaft envelope chamber from this interconnecting part can be maintained described setting pressure at the pressure of steam of the described interconnecting part of field flow orientation that is positioned at an opposite side with described vaporium with respect to described the 3rd sealed department from described ejection side shaft envelope chamber.
Being changed sometimes by the compressing section compresses and the pressure of steam that is sent to the ejection side at vaporium, perhaps is not constant pressure sometimes.At this moment, escape to the vapor pressure variation that is arranged in the zone of an opposite side the ejection side shaft envelope chamber with respect to the 3rd sealed department from vaporium with vaporium.To this, in this structure, constitute with the pressure regulator valve that interconnecting part connects: from ejection side shaft envelope chamber, be positioned at the pressure of steam of field flow orientation interconnecting part of an opposite side when being higher than the setting pressure of atmospheric regulation with vaporium with respect to the 3rd sealed department, can be maintained setting pressure with import to the pressure that sucks the steam in the zone between first sealed department and second sealed department the side shaft envelope chamber from interconnecting part, therefore, even escape in the ejection side shaft envelope chamber be arranged in an opposite side with respect to the 3rd sealed department with vaporium the vapor pressure in zone with the variation in pressure more than the described setting pressure, also the pressure stability that sucks first sealed department of side shaft envelope chamber and the zone between second sealed department can be maintained and be higher than atmospheric constant compression force (setting pressure).
In this case, preferred described interconnecting part has and is used for vent tank that the liquid that the steam that flows to described suction side shaft envelope chamber from described ejection side shaft envelope chamber contains is separated, and described pressure regulator valve is maintained described setting pressure with liquid has obtained separated steam in described vent tank pressure.
From escaping to the steam of ejection side shaft envelope chamber, vaporium for example contains sometimes because the condensation water that steam cooling generates or in order to compress with the sealing between the internal surface of the press part of rotor and vaporium or to lubricate the liquid that imports vaporium.When this liquid during, exist the action of pressure regulator valve to become unsettled misgivings with steam feed pressure modulating valve.To this, in this structure, interconnecting part has and is used for flow to the vent tank that liquid that the steam that sucks side shaft envelope chamber contains separates from ejection side shaft envelope chamber, and pressure regulator valve is maintained setting pressure with liquid has obtained separated steam in described vent tank pressure.Therefore, even the steam that escapes to ejection side shaft envelope chamber from vaporium, contain under the situation of liquid, also can prevent the fluid inflow pressure modulating valve.The result is to prevent that the action of pressure regulator valve from becoming unstable.
And then in this case, preferably on described vent tank, being connected with the road of releasing that is used for discharging liquid that this vent tank stores, this releases the road and links to each other with described suction port.
According to this structure, can make the liquid that is stored in vent tank get back to vaporium by releasing the road.Thus, the condensation water that can utilize the liquid that spills to ejection side shaft envelope chamber from vaporium again or generate because of the cooling of the steam that spills to ejection side shaft envelope chamber.The result is to suppress the decline of energy efficiency in the both vapor compression.
In possessing the structure of above-mentioned pressure regulator valve, preferably on described pressure regulator valve, be connected with residual steam and discharge the road, discharge the road to described residual steam when the pressure that this pressure regulator valve constitutes the steam in described interconnecting part surpasses described setting pressure and discharge remaining steam, described residual steam is discharged the road and is linked to each other with described suction port.
According to this structure, can make from the remaining steam of pressure regulator valve discharge and get back to vaporium by residual steam discharge road.Therefore, can utilize the steam of discharging again from pressure regulator valve.The result is to suppress the decline of energy efficiency in the both vapor compression.
In above-mentioned vapour compression machine, preferred described vapour compression machine has makes described compression with the driving source of rotor rotation and the control device of controlling described drive source drives, the link road of described interconnecting part through being provided with open and close valve is connected with the steam pipe arrangement that voltage supply power is higher than atmospheric high pressure steam circulation, and the starting that described control device is accompanied by described driving source makes described open and close valve become out state.
When starting source starts, i.e. during vapour compression machine starting, owing to also steam is not compressed at vaporium, so the pressure in the zone of the ejection side of vaporium can not uprise.Therefore, when vapour compression machine starts, exist from vaporium can not spill the situation that pressure is higher than atmospheric high compressed steam to ejection side shaft envelope chamber.To this, in this structure, link road through being provided with open and close valve connects portion on for the steam pipe arrangement that is higher than atmospheric high pressure steam circulation, and be accompanied by the starting of driving source, control device makes open and close valve become out state, and therefore can from the steam pipe arrangement pressure be higher than atmospheric high compressed steam when vapour compression machine starts imports interconnecting part by link road.Therefore, even when vapour compression machine starts, do not spill under the situation that pressure is higher than atmospheric high compressed steam to ejection side shaft envelope chamber from vaporium, also can be higher than atmospheric high compressed steam, pressure that should the zone can be remained and be higher than atmospheric high-pressure to first sealed department that sucks side shaft envelope chamber and the regional supply pressure between second sealed department.
The invention effect
As described above, according to the present invention, can when descending, the formation efficiency that suppresses compressed steam immerse vaporium even also can prevent atmosphere under the subatmospheric situation of the pressure of the steam that in vaporium, sucks.
Description of drawings
Fig. 1 is the ideograph of the formation of the summary vapour compression machine of representing first embodiment of the invention;
Fig. 2 is the ideograph of the formation of the summary vapour compression machine of representing second embodiment of the invention;
Fig. 3 is the ideograph of the formation of the summary vapour compression machine of representing third embodiment of the invention;
Fig. 4 is the ideograph of the formation of the summary vapour compression machine of representing four embodiment of the invention;
Fig. 5 is the ideograph of the formation of the summary vapour compression machine of representing fifth embodiment of the invention;
Among the figure
2-compression rotor
The 2a-press part
The 2b-rotor shaft
The 3-driving source
The 4-framework
The 10-first suction side sealed department (first sealed department)
The 12-second suction side sealed department (second sealed department)
14-the 3rd suction side sealed department (lip seal)
The 14b-lip
The 16-first ejection side seals (the 3rd sealed department)
The 22-interconnecting part
The 32-vaporium
The 33-suction port
The 34-ejiction opening
35-sucks side shaft envelope chamber
Grease chamber, 37-suction side (grease chamber)
Atmosphere opening road, 38-suction side (atmosphere opening road)
39-ejection side shaft envelope chamber
The 52-pressure regulator valve
The 53-residual steam is discharged the road
The 54-vent tank
56-releases the road
The 58-control device
The 60-link road
The 62-open and close valve
102-sprays side steam pipe arrangement (steam pipe arrangement)
Embodiment
Below with reference to the description of drawings embodiments of the present invention.
(first mode of execution)
At first, describe for the formation of the vapour compression machine of first mode of execution of the present invention with reference to figure 1.
The vapour compression machine of this first mode of execution is that the steam that the compression of utilization rotation will be located at vaporium 32 suctions of framework 4 inside on one side with rotor 2 is sent to the downstream side on one side to its device that compresses.
Specifically, the vapour compression machine of this first mode of execution possesses: compression sprays side seals 18, the 3rd ejection side seals 20 and interconnecting part 22 with rotor 2, driving source 3, framework 4, inhalation side bearings 6, the first suction side sealed department 10, the second suction side sealed department 12, the 3rd suction side sealed department 14, ejection side bearing 15, the first ejection side seals 16, second.
Compression can be rotatably set in the framework 4 with rotor 2, compresses while the water vapour in the vaporium described later 32 that is drawn in the framework 4 is sent to ejiction opening 34 sides described later.This compression has press part 2a and rotor shaft 2b with rotor 2.Though not shown, press part 2a forms helical, and be housed in the vaporium 32 described later.Rotor shaft 2b extends and passes axle envelope described later chamber 35,39 to axial both sides from press part 2a, and bearing is provided with chamber 36,40 and grease chamber 37,41.The end of rotor shaft 2b is connected in driving source 3.Driving source 3 makes compression pivot with rotor 2 by applying driving force for rotor shaft 2b.And, pivoting with rotor 2 by compression, press part 2a rotates in vaporium 32, thus, on one side the water vapour that press part 2a will suck in the vaporium 32 is sent to ejiction opening 34 1 sides described later, Yi Bian it is compressed.
Position corresponding with side's side end of the length direction of vaporium 32 in framework 4 is provided with suction port 33, and suction port 33 is used for sucking water vapour to vaporium 32.Suction port 33 is along the radially extension of framework 4, and is connected in vaporium 32 from the side.Suction port 33 is connected with the illustrated suction side of omission steam pipe arrangement.Be inhaled into vaporium 32 from the water vapour of this suction side steam pipe arrangement supply by suction port 33.
In addition, position corresponding with the end of the opposing party's side of the length direction of vaporium 32 in framework 4 is provided with ejiction opening 34, and ejiction opening 34 is used for the water vapour after the vaporium 32 ejection compressions.Ejiction opening 34 is along the radially extension of framework 4, and is connected in vaporium 32 from the side.Ejiction opening 34 is connected in not shown ejection side steam pipe arrangement.Be supplied to steam utilization machines such as heat exchanger to the water vapour of ejection side steam pipe arrangement by ejection side steam pipe arrangement by ejiction opening 34 ejections from vaporium 32.
Sucking side shaft envelope chamber 35 is configured to be communicated with the end of the suction side of the water vapour of vaporium 32.This suction side shaft envelope chamber 35 extending axially along framework 4.In sucking side shaft envelope chamber 35, be penetrated with the compression part of extending to side's side from press part 2a among the rotor shaft 2b of rotor 2.And, in sucking side shaft envelope chamber 35, utilize the space on every side of described each suction side sealed department 10,12,14 canned rotor axle 2b.
It is spaces that inhalation side bearings 6 is set that inhalation side bearings is provided with chamber 36.This inhalation side bearings be provided with chamber 36 framework 4 axially on be arranged at respect to the position that sucks side shaft envelope chamber 35 and vaporium 32 opposite sides on, and with suck side shaft and seal chamber 35 and be communicated with.
Grease chamber, suction side 37 is the spaces of accommodating the lubricant oil that is used to be supplied to inhalation side bearings 6.This grease chamber, suction side 37 is contained among the notion of grease chamber of the present invention.Grease chamber, suction side 37 framework 4 axially on be arranged at and with respect to inhalation side bearings chamber 36 be set and seal on the position of chamber 35 opposite sides with sucking side shaft, and with inhalation side bearings chamber 36 is set and is communicated with.That is, grease chamber, suction side 37 is provided with chamber 36 and sucks side shaft envelope chamber 35 and be communicated with through inhalation side bearings.
Atmosphere opening road, suction side 38 is used to make the atmosphere outside spatial communication that sucks side shaft envelope chamber 35 and framework 4.This atmosphere opening road, suction side 38 is contained among the notion on atmosphere opening of the present invention road.Atmosphere opening road, suction side 38 is to be arranged at framework 4 from the axial intermediate portion that sucks side shaft envelope chamber 35 to the mode that radial outside extends.
Ejection side shaft envelope chamber 39, ejection side bearing are provided with the ejection side that chamber 40, ejection side grease chamber 41 and ejection side atmosphere opening road 42 are configured in the water vapour of vaporium 32.Described ejection side shaft envelope chamber 39, ejection side bearing be provided with chamber 40, ejection side grease chamber 41 and ejection side atmosphere opening road 42 framework 4 axially on suck side shaft envelope chamber 35, inhalation side bearings is provided with chamber 36, grease chamber, suction side 37 and 38 balanced configurations of atmosphere opening road, suction side.That the formation on chamber 36, grease chamber, suction side 37 and atmosphere opening road, suction side 38 is set is basic identical with sucking side shaft envelope chamber 35, inhalation side bearings for the formation that ejection side shaft envelope chamber 39, ejection side bearing are provided with chamber 40, ejection side grease chamber 41 and ejection side atmosphere opening road 42.
The first suction side sealed department 10 is configured in and sucks the position of more being partial to vaporium 32 1 sides in the side shaft envelope chamber 35 than the connection part on atmosphere opening road, suction side 38.Specifically, the first suction side sealed department 10 is configured in the end that sucks vaporium 32 sides in the side shaft envelope chamber 35.The first suction side sealed department 10 is to be used to suppress water vapour in the vaporium 32 to the contactless sealed department that atmosphere opening road, suction side 38 spills, and is contained among the notion of first sealed department of the present invention.The first suction side sealed department 10 for example constitutes (thereby so-called Wei Sike Sealing is the parts that the liquid that injects the gap pressurizeed and seals by the axle rotation that is provided with screw thread) by so-called Wei Sike Sealing (Visco-seal).This Wei Sike Sealing has the illustrated internal thread part of omission that is provided with at the internal surface that forms the framework 4 that sucks side shaft envelope chamber 35, and rotor shaft 2b runs through this internal thread part.Described internal thread part has less times greater than the internal diameter of the external diameter of rotor shaft 2b, is formed with the micro-gap of intricate shape between the outer circumferential face of a plurality of worm tooths of the inner peripheral surface of internal thread part and rotor shaft 2b.This gap is owing to its intricate shape makes the circulating resistance of water vapour uprise, and therefore, the water vapour that almost suppresses in the vaporium 32 spills to sucking side shaft envelope chamber 35.
The second suction side sealed department 12 is configured in the connection part on atmosphere opening road, suction side 38 in the suction side shaft envelope chamber 35 and the position between the first suction side sealed department 10.The second suction side sealed department 12 is to be used to suppress water vapour along the contactless sealed department of rotor shaft 2b to connection part one side flow on atmosphere opening road, described suction side 38, and it is contained among the notion of second sealed department of the present invention.The second suction side sealed department 12 is for example by constituting with the same Wei Sike Sealing of the described first suction side sealed department 10.
The 3rd suction side sealed department 14 is configured in and sucks the position of more leaning on grease chamber, suction side 37 (inhalation side bearings is provided with chamber 36) in the side shaft envelope chamber 35 than the connection part on atmosphere opening road, suction side 38.The 3rd suction side sealed department 14 is sealed departments of contact-type, and it prevents to flow out from grease chamber, suction side 37 and by inhalation side bearings chamber 36 is set and flows into the lubricant oil that sucks the side shaft envelope chamber 35 and seal in the chamber 35 towards vaporium 32 1 side flow sucking side shaft.
Specifically, the 3rd suction side sealed department 14 is made of lip seal.This lip seal has main part 14a, lip 14b.Main part 14a embeds the circular part that sucks in the side shaft envelope chamber 35.Lip 14b extends to radially inner side from the inner peripheral surface of main part 14a.This lip 14b is to prevent that from grease chamber, suction side 37 by inhalation side bearings chamber 36 being set flows into the lubricant oil that sucks the side shaft envelope chamber 35 posture towards vaporium 32 1 side flow, is contacted with the outer circumferential face of rotor shaft 2b.That is, lip 14b is along with to the ora terminalis of its radially inner side and gradually towards grease chamber, suction side 37 sides, and protrudes shape and under the crooked state, the end edge portion of radially inner side is contacted with the outer circumferential face of rotor shaft 2b becoming to vaporium 32 sides.Lip 14b produces elastic force by crooked, utilizes its elastic force that the end edge portion of the radially inner side of this lip 14b is crimped onto on the outer circumferential face of rotor shaft 2b.
The first ejection side seals 16, the second ejection side seals 18 and the 3rd ejection side seals 20 are arranged at ejection side shaft envelope chamber 39, on axially (rotor shaft 2b's is axial) of framework 4, the first ejection side seals 16, the second ejection side seals 18 and the 3rd ejection side seals 20 and the first suction side sealed department 10, the second suction side sealed department 12 and 14 balanced configurations of the 3rd suction side sealed department.The formation of the described first ejection side seals 16, the second ejection side seals 18 and the 3rd ejection side seals 20 is identical with the formation of the first suction side sealed department 10, the second suction side sealed department 12 and the 3rd suction side sealed department 14.And, the first ejection side seals 16 is contactless sealed departments, it is used to improve to expose the circulating resistance to the water vapour of ejection side shaft envelope chamber 39 from vaporium 32 along rotor shaft 2b, and the first ejection side seals 16 is contained among the notion of the 3rd sealed department of the present invention.
Interconnecting part 22 be used for making suck the zone of side shaft envelope chamber 35 between the first suction side sealed department 10 and the second suction side sealed department 12, with ejection side shaft envelope chamber 39 in be positioned at the zone (in the first ejection side seals 16 and second zone that sprays between the side seals 18) of vaporium 32 opposite sides with respect to the first ejection side seals 16 and be connected.The first ejection side seals 16 and the water vapour second zone that sprays between the side seals 18 that escape to ejection side shaft envelope chamber 39 from vaporium 32 are imported into first suction side sealed department 10 of suction side shaft envelope chamber 35 and the zone between the second suction side sealed department 12 by this interconnecting part 22.
Specifically, interconnecting part 22 has suction side stream 22a, ejection effluent road 22b and access 22c.
Below, describe for the action of the vapour compression machine of this first mode of execution.
In the vapour compression machine of this first mode of execution, to suction port 33 supply water vapour, this water vapour is inhaled into vaporium 32 from suction port 33 from diagram suction side, abridged steam pipe arrangement.Apply driving force by driving source 3 and give compression, make compression rotor 2 rotations with rotor 2, thus, while press part 2a rotates the pressurized water steam in vaporium 32.At this moment, while press part 2a will be drawn into water vapour the vaporium 32 from suction port 33 is sent to ejiction opening 34 sides it is compressed.The water vapour that has compressed like this is ejected into diagram abridged ejection side steam pipe arrangement from vaporium 32 by ejiction opening 34.
Then, because the first ejection side seals 16 is contactless sealed departments, so a small amount of water vapor in the water vapour after the compression escapes to first ejection side seals 16 of ejection side shaft envelope chamber 39 and the zone between the second ejection side seals 18 from the end of the ejection side of vaporium 32.This water vapour that spills is imported into first suction side sealed department 10 of suction side shaft envelope chamber 35 and the zone between the second suction side sealed department 12 by ejection effluent road 22b, access 22c, the suction side stream 22a of interconnecting part 22.Thus, the space between the first suction side sealed department 10 and the second suction side sealed department 12 is full of the water vapour of elevated pressures, roughly keeps the vapor pressure in this space by the sealed department 10,12 of both sides.That is, the space between two sealed departments 10,12 is the pressure higher than barometric pressure.
But, sometimes also from the water vapour of suction side steam pipe arrangement to suction port 33 supply pressure below atmospheric pressure.At this moment, the pressure of the end of the suction side of vaporium 32 becomes and is lower than atmospheric pressure.At this moment, if be not formed with the space of the high pressure that keeps by the first suction side sealed department 10 and the second suction side sealed department 12 sucking side shaft envelope chamber 35, then import and suck the atmosphere (air) that side shafts seal chambers 35 and will flow into vaporium 32 by atmosphere opening road, suction side 38.
In this first mode of execution, as mentioned above, zone between the first suction side sealed department 10 and the second suction side sealed department 12 is communicated with by interconnecting part 22 with the first ejection side seals 16 and second zone that sprays between the side seals 18, thus, be full of the water vapour of high pressure between the end of atmosphere opening road, suction side 38 with respect to the suction side of the water vapour of connection part that sucks side shaft envelope chamber 35 and vaporium 32, and, form space by the first suction side sealed department 10 and the second suction side sealed department, 12 these vapor pressures of maintenance of both sides.Therefore, even vaporium 32 has sucked by suction port 33 under the situation of water vapour of pressure below atmospheric pressure, utilization is retained as the space of described high pressure, can prevent that also importing the atmosphere that sucks side shaft envelope chamber 35 by atmosphere opening road, suction side 38 flows into to vaporium 32.
In addition, in this first mode of execution, will be by the gap that forms by the contactless first ejection side seals 16 import the first suction side sealed department 10 that sucks side shaft envelope chamber 35 and the zone between the second suction side sealed department 12 from the steam that vaporium 32 spills to ejection side shaft envelope chamber 39, can be used for preventing by atmosphere opening road, suction side 38 import suck side shafts envelope chambers 35 the atmosphere inflow to vaporium 32.That is, utilized originally and sealed the steam that chamber 39 spills in vain to the ejection side shaft, can prevent that atmosphere from flowing into to vaporium 32 from vaporium 32.The result is that in this first mode of execution, the part of the steam that the ejiction opening 34 from vaporium 32 need not be sprayed is allocated in and prevents that atmosphere from flowing into vaporium 32, the therefore minimizing of the ratio of the steam that can effectively utilize in the compressed steam that can suppress to generate.Therefore, in this first mode of execution, in the decline of the formation efficiency that suppresses compressed steam, even can prevent also under the subatmospheric situation of vapor pressure that vaporium 32 sucks that atmosphere from flowing into vaporium 32.
In addition, in this first mode of execution, connection part than atmosphere opening road, suction side 38 in sucking side shaft envelope chamber 35 more is provided with the 3rd suction side sealed department 14 by on the position of grease chamber, suction side 37, the 3rd suction side sealed department 14 has lip 14b, and lip 14b is contacted with the outer circumferential face of rotor shaft 2b towards the posture of vaporium 32 1 side flow in sucking side shaft envelope chamber 35 with the lubricant oil that prevents to flow out from grease chamber, suction side 37.
In the 3rd such suction side sealed department 14, when the pressure in the space that is positioned at vaporium 32 1 sides of sealing portion 14 is lower than the pressure in the space that is positioned at grease chamber, suction side 37 1 sides of sealing portion 14, because the pressure difference in described two spaces, lip 14b is crimped on the outer circumferential face of rotor shaft 2b by brute force.Under this state, if compression is rotated for a long time with rotor 2, then the wearing and tearing of lip 14b are violent, finally can impair the sealing effect of lip 14b, have the misgivings of the flow of lubricants of 37 outflows from the grease chamber, suction side to vaporium 32 sides.To this, in this first mode of execution, be higher than atmospheric space owing between the 3rd suction side sealed department 14 and vaporium 32, form the pressure that keeps by the first suction side sealed department 10 and the second suction side sealed department 12, therefore, even sucked at vaporium 32 under the situation of water vapour of pressure below atmospheric pressure, the become pressure in the space that is positioned at grease chamber, suction side 37 1 sides that is lower than sealing portion 14 of the pressure that also can prevent the space that is positioned at vaporium 32 1 sides of the 3rd suction side sealed department 14.Therefore, can prevent that lip 14b is crimped onto the outer circumferential face of rotor shaft 2b by brute force, the result is that the wearing and tearing that can suppress lip 14b become aggravation.And, can prevent because the wearing and tearing of lip 14b cause that from the grease chamber, suction side 37 flow of lubricants that flow out are to vaporium 32 1 sides and be immersed in vaporium 32.
(second mode of execution)
Below, describe for the formation of the vapour compression machine of second mode of execution of the present invention with reference to figure 2.
The vapour compression machine of this second mode of execution possesses the pressure regulator valve 52 that is connected with interconnecting part 22.Change sometimes by press part 2a compression and the pressure that is sent to the water vapour of ejection side at vaporium 32, perhaps not constant pressure sometimes, at this moment, escape to first ejection side seals 16 of ejection side shaft envelope chamber 39 and the zone between the second ejection side seals 18 from vaporium 32, the variation in pressure of the water vapour that flows at interconnecting part 22.The pressure that pressure regulator valve 52 is arranged for the water vapour that will flow at interconnecting part 22 this moment is maintained the setting pressure that is higher than atmospheric regulation.
Specifically, pressure regulator valve 52 is connected in the access 22c of interconnecting part 22.
Pressure regulator valve 52 constitutes: under the situation more than the described setting pressure, the pressure that imports the water vapour in the first suction side sealed department 10 that sucks side shafts envelope chambers 35 and the zone between the second suction side sealed department 12 from this interconnecting part 22 can be maintained described setting pressure at the pressure of the water vapour that flows to interconnecting part 22 from the first ejection side seals 16 of ejection side shaft envelope chamber 39 and the zone between the second ejection side seals 18.Described setting pressure is by pressure regulator valve 52 decisions.Pressure regulator valve 52 is connected in residual steam and discharges road 53.When the water vapour pressure in the zone of ejection side shaft envelope chamber 39 1 sides surpassed described setting pressure for the position that is provided with this pressure regulator valve 52 in the interconnecting part 22, pressure regulator valve 52 was discharged road 53 from the trend residual steam and is discharged remaining water vapour.The pressure of the water vapour that pressure regulator valve 52 will flow at interconnecting part 22 by discharging this remaining water vapour is maintained described setting pressure.And, when the normal operation of vapour compression machine, escape to the water vapour pressure in the zone between the first ejection side seals 16 and the second ejection side seals 18 the ejection side shaft envelope chamber 39 because more than described setting pressure from vaporium 32, therefore, when running well, it is maintained described setting pressure all the time by pressure regulator valve 52 from the first suction side sealed department 10 of interconnecting part importing suction side shaft envelope chambers 35 22 and the water vapour pressure in the zone between the second suction side sealed department 12.
The structure except that above-mentioned of the vapour compression machine of this second mode of execution is identical with the vapour compression machine of first mode of execution.
As described above, in this second mode of execution, interconnecting part 22 is connected in pressure regulator valve 52, this pressure regulator valve 52 constitutes: under the situation more than the setting pressure that is being higher than atmospheric regulation from the first ejection side seals 16 of ejection side shaft envelope chamber 39 and the zone between the second ejection side seals 18 to the pressure of the water vapour that interconnecting part 22 flows, the pressure that imports the water vapour in the first suction side sealed department 10 that sucks side shafts envelope chambers 35 and the zone between the second suction side sealed department 12 from this interconnecting part 22 can be maintained described setting pressure.Therefore, even since at vaporium 32 by press part 2a compression and be sent to the pressure change etc. of the water vapour of ejection side, and make the vapor pressure escape to the zone between the first ejection side seals 16 and the second ejection side seals 18 in the ejection side shaft envelope chamber 39 with the variation in pressure more than the described setting pressure, also the pressure stability in zone that sucks 10,12 of the sealed departments of side shaft envelope chamber 35 can be maintained and be higher than atmospheric constant pressure.
The effect except that above-mentioned of this second mode of execution is identical with the effect of above-mentioned first mode of execution.
(the 3rd mode of execution)
Below, describe for the formation of the vapour compression machine of the 3rd mode of execution of the present invention with reference to figure 3.
In the vapour compression machine of the 3rd mode of execution, interconnecting part 22 has vent tank 54, vent tank 54 is used for the water that the water vapour that flows to suction side shaft envelope chamber 35 by this interconnecting part 22 from ejection side shaft envelope chamber 39 contains is separated, and pressure regulator valve 52 will maintain setting pressure by the pressure that vent tank 54 separates the water vapour of water outlet.
Specifically, for example from vaporium 32 escapes to the water vapour in the zone between the sealed department 16,18 of ejection side shaft envelope chamber 39, contain sometimes for the inner peripheral surface of the framework 4 that forms vaporium 32 and compression with sealing between the press part 2a of rotor 2 and lubricated and water importing vaporium 32.In addition, escape to the water vapour cooling in zone of 16,18 of the sealed departments of ejection side shaft envelope chamber 39 from vaporium 32, thus, produce water of condensation sometimes.Therefore, flow out to the water vapour that sprays effluent road 22b from ejection side shaft envelope chamber 39 and contain water sometimes.When the water that contains in this water vapour flows into pressure regulator valve 52, exist the action of pressure regulator valve 52 to become unsettled misgivings.Therefore, in the present embodiment, the pressure that has been separated water water vapour afterwards by vent tank 54 maintains setting pressure by pressure regulator valve 52.
In detail, in the 3rd mode of execution, vent tank 54 is arranged at the access 22c of interconnecting part 22, is connected with access 22c and pressure regulator valve 52 on the top of this vent tank 54.Be connected with in the bottom of vent tank 54 and be used for releasing road 56 what be stored in that water in this vent tank 54 discharges.Release at this and to be provided with petcock 58 on road 56.Petcock 58 remains the watertight state with the space of the holding water steam in the vent tank 54, and the water that is stored in the vent tank 54 is discharged.That is, petcock 58 is kept the space that makes water holding water steam in vent tank 54 and is connected in state between the airspace in space in the vent tank 54 by releasing road 56, simultaneously, the water in the vent tank 54 is discharged gradually.
The moisture water vapour that flows out to interconnecting part 22 from ejection side shaft envelope chamber 39 is in the top importing vent tank 54 of vent tank 54.At this moment, water is stored in the bottom in the vent tank 54, separates with water vapour.Release the flow path on road 56 etc. by suitable setting, the flow of the water that will discharge from vent tank 54 is maintained the water level that is stored in the water in the vent tank 54 and is lower than access 22c and the pressure regulator valve 52 joint bit position with respect to vent tank 54.The result is, the water vapour after the water separation is imported into the zone that sucks 10,12 of sealed departments in the side shaft envelope chamber 35 by access 22c and suction side stream 22a at vent tank 54.In addition, pressure regulator valve 52 will be maintained setting pressure with water separation and the pressure that is present in the water vapour in these vent tank 54 internal upper part spaces at vent tank 54, when the pressure of this water vapour surpasses setting pressure, discharge road 53 to residual steam and discharge remaining steam.
The formation except that above-mentioned of the vapour compression machine of the 3rd mode of execution is identical with the formation of the vapour compression machine of second mode of execution.
As described above, in the 3rd mode of execution, interconnecting part 22 has the vent tank 54 that is used for flowing to from ejection side shaft envelope chamber 39 water separation that the water vapour that sucks side shafts envelope chambers 35 contain, and pressure regulator valve 52 maintains setting pressure with the pressure that has separated the water vapour after the water in the vent tank 54.Therefore, even from vaporium 32 escapes to the water vapour of ejection side shaft envelope chamber 39, contain under the situation of water, can prevent that also water from flowing into pressure regulator valve 52.The result is to prevent that the action of pressure regulator valve 52 from becoming unstable.
The effect except that above-mentioned of the 3rd mode of execution is identical with the effect of above-mentioned first mode of execution and second mode of execution.
(the 4th mode of execution)
Below, describe for the formation of the vapour compression machine of the 4th mode of execution of the present invention with reference to figure 4.
In the vapour compression machine of the 4th mode of execution, can when driving source 3 startings, draw water vapour to interconnecting part 22 from ejection side steam pipe arrangement 102.
Specifically, the vapour compression machine of the 4th mode of execution possesses control device 59, and control device 59 is used for the driving in controlling and driving source 3 and the other machines that constitutes vapour compression machine.In addition, this vapour compression machine possesses link road 60 and open and close valve 62.
In addition, control device 59 starting that is accompanied by driving source 3 makes the open and close valve 62 of the state of closing be in out state.Specifically, on vapour compression machine, be provided with diagram abridged switch starter.When switch starter is connected, corresponding to this, the starting of control device 59 beginning driving sources 3 and make open and close valve 62 be in out state at certain hour.Pressure is higher than atmospheric water vapour and flows in the ejection side steam pipe arrangement 102, is in out state by making open and close valve 62, and the water vapour in the ejection side steam pipe arrangement 102 is supplied to vent tank 54 by link road 60 with certain hour.Thus, after vapour compression machine starts, import pressure with certain hour to the zone of 10,12 of the sealed departments that sucks side shaft envelope chamber 35 and be higher than atmospheric water vapour.
The formation except that above-mentioned of the vapour compression machine of the 4th mode of execution is identical with the formation of the vapour compression machine of the 3rd mode of execution.
When vapour compression machine starts, owing to also water vapour is not compressed at vaporium 32, so the pressure in the zone of the ejection side of vaporium 32 can not uprise.Therefore, when vapour compression machine starts, exist from vaporium 32 can not spill the situation that pressure is higher than atmospheric water vapour to ejection side shaft envelope chamber 39.To this, in the 4th mode of execution, link road 60 through being provided with open and close valve 62 connects portion 22 on ejection side steam pipe arrangement 102, and be accompanied by the starting of driving source 3, control device 59 makes open and close valve 62 become out state, therefore can from ejection side steam pipe arrangement 102 pressure be higher than atmospheric water vapour when vapour compression machine starts and import interconnecting part 22 by link road 60.Therefore, even when vapour compression machine starts, do not spill under the situation that pressure is higher than atmospheric water vapour to ejection side shaft envelope chamber 39 from vaporium 32, also can be higher than atmospheric water vapour, pressure that should the zone can be remained and be higher than atmospheric pressure to the regional supply pressure of 10,12 of the sealed departments that sucks side shaft envelope chamber 35.
The effect except that above-mentioned of the 4th mode of execution is identical with the effect of the respective embodiments described above.
(the 5th mode of execution)
Below, describe for the formation of the vapour compression machine of the 5th mode of execution of the present invention with reference to figure 5.
In the vapour compression machine of the 5th mode of execution, the road 56 of releasing that is connected in vent tank 54 links to each other with suction port 33 with the residual steam discharge road 53 that is connected in pressure regulator valve 52.
Because pressure is higher than atmospheric water vapour and is imported in the vent tank 54, the water that therefore is stored in the vent tank 54 is discharged to and releases road 56 to be higher than atmospheric pressure.Therefore, from diagram suction side, abridged steam pipe arrangement during, discharge pressure to the water that releases road 56 and become and be higher than pressure in the suction port 33 to the water vapour of the subatmospheric low pressure of suction port 33 supplies.The result is, is discharged to be inhaled into to suction port 33 easily under the action of pressure of water in this water and suction port 33 of releasing road 56 and to be imported into vaporium 32.
In addition, the setting pressure of pressure regulator valve 52 is owing to be configured to the pressure higher slightly than barometric pressure, therefore discharges the pressure of discharging the remaining water vapour on road 53 to residual steam from pressure regulator valve 52 and becomes and be higher than barometric pressure.Therefore, from suction side steam pipe arrangement under the situation of the subatmospheric low-pressure water steam of suction port 33 supply, be discharged to residual steam and discharge the pressure of the remaining water vapour on road 53 and become and be higher than pressure in the suction port 33.The result is, is discharged to residual steam and discharges and be inhaled into to suction port 33 easily under the action of pressure of remaining water vapour in this water vapour and suction port 33 on road 53 and be imported into vaporium 32.
The formation except that above-mentioned of the vapour compression machine of the 5th mode of execution is identical with the formation of the vapour compression machine of the 4th mode of execution.
In the 5th mode of execution, the road 56 of releasing that is connected in vent tank 54 links to each other with suction port 33, therefore, can make the water that is stored in vent tank 54 turn back to vaporium 32 by releasing road 56.Thus, the water of condensation that can utilize the water that spills to ejection side shaft envelope chamber 39 from vaporium 32 again or generate because of the cooling of the water vapour that spills to ejection side shaft envelope chamber 39.The result is to suppress the decline of energy efficiency in the both vapor compression.
In addition, in the 5th mode of execution, link to each other with suction port 33 owing to discharge the residual steam discharge road 53 of remaining water vapour from pressure regulator valve 52, therefore, can make from the remaining water vapour of pressure regulator valve 52 discharges and get back to vaporium 32 by residual steam discharge road 53.Therefore, can utilize the water vapour of discharging again from pressure regulator valve 52.The result is further to suppress the decline of energy efficiency in the both vapor compression.
The effect except that above-mentioned of the 5th mode of execution is identical with the effect of the respective embodiments described above.
In addition, about this disclosed mode of execution, will be understood that to have a few be exemplary, be not to be defined in this.Scope of the present invention also comprises the explanation in the non-above-mentioned mode of execution, but represent by claims so that with the meaning of claims equalization and all changes in the scope.
For example, the first suction side sealed department 10, the second suction side sealed department 12, the first ejection side seals 16 and the second ejection side seals 18 can also be the contactless sealed departments beyond the described Wei Sike Sealing.For example, described each sealed department 10,12,16,18 can also be made of known labyrinth.
In addition, each sealed department 10,12,16,18 that is made of described Wei Sike Sealing can also be the structure with external thread part that the outer circumferential face at rotor shaft 2b is provided with, to replace described internal thread part.That is, described each sealed department 10,12,16,18 can also be at a plurality of worm tooths of the outer circumferential face of external thread part and form the such structure of micro-gap that forms intricate shape between the inner peripheral surface of framework 4 of axle envelope chamber 35,39.
In addition, the 3rd suction side sealed department 14 and the 3rd ejection side seals 20 can also be made of the sealed department of the contact-type beyond the lip seal.For example, described each sealed department 14,20 can be by known mechanical sealing spare or various oil sealing, stuffing box packing formations such as (gland packing).
In addition, in the above-described 4th embodiment, can also omit vent tank 54, release road 56 and petcock 58, and link road 60 is directly connected in access 22c.
In addition, in above-mentioned the 4th, the 5th mode of execution, control device 59 can also determine whether open and close valve 62 is opened into out state according to the pressure of the steam that sucks vaporium 32 when driving source 3 starting with from the pressure of the steam of vaporium 32 ejections.That is, in this variation, be respectively equipped with pressure transducer, import testing signals to control device 59 from this each pressure transducer at suction port 33 and ejiction opening 34.When described switch starter was connected, control device 59 judged according to the testing signal of input whether the pressure of suction port 33 is lower than barometric pressure, and judges whether the pressure of ejiction opening 34 is lower than barometric pressure.Then, control device 59 is lower than at the pressure that is judged as suction port 33 under the subatmospheric situation of pressure of barometric pressure and ejiction opening 34 open and close valve 62 is opened into out state.
In this structure, only be to be lower than under the subatmospheric situation of vapor pressure of ejiction opening 34 of barometric pressure and vaporium 32, just be higher than atmospheric high pressure steam to interconnecting part 22 supplies from ejection side steam pipe arrangement 102 at the steam that sucks vaporium 32 after the vapour compression machine starting just soon.Because the preferred steam that sucks vaporium 32 when vapour compression machine start is lower than near the ejiction opening 34 of barometric pressure and vaporium 32 vapor pressure (spilling to spraying the pressure that side shaft seals the steam of chamber 39 from vaporium 32) when being lower than barometric pressure, be higher than atmospheric high pressure steam from 102 the zone supplies of ejection side steam pipe arrangement to 10,12 of the sealed departments that sucks side shaft envelope chamber 35, therefore, in this structure, only being defined in can be to this zone supply steam this time.In other words, when starting, vapour compression machine do not need from ejection side steam pipe arrangement 102 when steam is supplied in the zone of 10,12 of the sealed departments that sucks side shaft envelope chamber 35, just, therefore, can prevent that the steam that sprays in the side steam pipe arrangement 102 from consuming waste in vain not to this zone supply steam.
In addition, the steam of vapour compression machine compression can also be the steam beyond the water vapour.At this moment, flowing out to the liquid that contains the steam of interconnecting part 22 from ejection side shaft envelope chamber 39 can also be water liquid in addition.
Claims (7)
1. vapour compression machine, it has:
Framework, described framework has vaporium, sucks side shaft envelope chamber, ejection side shaft envelope chamber and atmosphere opening road, described vaporium is provided with the suction port of steam in side's side of its length direction, be provided with the ejiction opening of steam in the opposing party's side of its length direction, described suction side shaft envelope chamber is communicated with the suction side of the steam of described vaporium, described ejection side shaft envelope chamber is communicated with the ejection side of the steam of described vaporium, and described atmosphere opening road is communicated with described suction side shaft envelope chamber and airspace;
The compression rotor, described compression has the press part that is contained in described vaporium and passes described each envelope chamber and the rotor shaft that extends from this press part to both sides with rotor, by described compression is pivoted with rotor, the steam of described press part in will sucking described vaporium compresses described steam when being sent to described ejection oral-lateral;
First sealed department, the connection part that is set at the described atmosphere opening of the ratio road in the described suction side shaft envelope chamber more is partial on the position of described vaporium one side, and described first sealed department is used to suppress the interior described atmosphere opening of the steam flow road of described vaporium;
Second sealed department is set on the connection part and the position between described first sealed department on the described atmosphere opening road in the described suction side shaft envelope chamber, and described second sealed department is used to suppress the described atmosphere opening of steam flow road;
The 3rd contactless sealed department is set at described ejection side shaft envelope chamber, and described the 3rd sealed department is used to improve to seal the circulating resistance of the steam that chamber spills to this ejection side shaft from described vaporium; And
Interconnecting part, described interconnecting part makes following two regional connectivities, the zone between described first sealed department and described second sealed department in the described suction side shaft of the first envelope chamber, it two is to be positioned at the zone of an opposite side with described vaporium with respect to described the 3rd sealed department in the described ejection side shaft envelope chamber.
2. vapour compression machine as claimed in claim 1, wherein,
On described framework, be provided with the grease chamber that is communicated with and accommodates lubricant oil with described suction side shaft envelope chamber,
The connection part on the described atmosphere opening of the ratio road in described suction side shaft envelope chamber more is provided with lip seal by the position of described grease chamber, described lip seal has lip, and described lip is contacted with the outer circumferential face of described rotor shaft in the indoor posture towards described vaporium one side flow of this suction side shaft envelope with the lubricant oil that prevents to flow out from described grease chamber.
3. vapour compression machine as claimed in claim 1 or 2, wherein,
Described vapour compression machine possesses the pressure regulator valve that is connected with described interconnecting part, this pressure regulator valve constitutes: when being higher than the setting pressure of atmospheric regulation, the pressure that imports to the steam in the zone between described first sealed department and described second sealed department the described suction side shaft envelope chamber from this interconnecting part can be maintained described setting pressure at the pressure of steam of the described interconnecting part of field flow orientation that is positioned at an opposite side with described vaporium with respect to described the 3rd sealed department from described ejection side shaft envelope chamber.
4. vapour compression machine as claimed in claim 3, wherein,
Described interconnecting part has and is used for vent tank that the liquid that the steam that flows to described suction side shaft envelope chamber from described ejection side shaft envelope chamber contains is separated,
Described pressure regulator valve is maintained described setting pressure with liquid has obtained separated steam in described vent tank pressure.
5. vapour compression machine as claimed in claim 4, wherein,
Be connected with the road of releasing that is used for discharging liquid that this vent tank stores on described vent tank, this releases the road and links to each other with described suction port.
6. as each described vapour compression machine of claim 3～5, wherein,
On described pressure regulator valve, be connected with residual steam and discharge the road, discharge the road to described residual steam when the pressure that this pressure regulator valve constitutes the steam in described interconnecting part surpasses described setting pressure and discharge remaining steam,
Described residual steam is discharged the road and is linked to each other with described suction port.
7. as each described vapour compression machine of claim 1～6, wherein,
Described vapour compression machine has makes described compression with the driving source of rotor rotation and the control device of controlling described drive source drives,
The link road of described interconnecting part through being provided with open and close valve is connected with the steam pipe arrangement that voltage supply power is higher than atmospheric high pressure steam circulation,
The starting that described control device is accompanied by described driving source makes described open and close valve become out state.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-255008 | 2009-11-06 | ||
| JP2009255008A JP5138662B2 (en) | 2009-11-06 | 2009-11-06 | Steam compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102052319A true CN102052319A (en) | 2011-05-11 |
| CN102052319B CN102052319B (en) | 2013-01-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010534990 Expired - Fee Related CN102052319B (en) | 2009-11-06 | 2010-11-01 | Steam compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5138662B2 (en) |
| KR (1) | KR101220665B1 (en) |
| CN (1) | CN102052319B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927548A (en) * | 2016-06-21 | 2016-09-07 | 西安交通大学 | Water-spray screw steam compressor |
| CN109404282A (en) * | 2018-12-19 | 2019-03-01 | 苏州通润驱动设备股份有限公司 | A kind of shaft seal structure and its monitoring system of screw rod vapour compression machine |
| CN109595169A (en) * | 2019-01-14 | 2019-04-09 | 冰轮环境技术股份有限公司 | Oil free screw compressor sealing mechanism and control method |
| CN115875305A (en) * | 2023-03-03 | 2023-03-31 | 鸿陆智能科技(山东)有限公司 | Combined sealing structure of MR centrifugal steam compressor |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441814A (en) * | 2018-12-29 | 2019-03-08 | 无锡五洋赛德压缩机有限公司 | Novel screw compressor |
| CN109488598A (en) * | 2018-12-29 | 2019-03-19 | 无锡五洋赛德压缩机有限公司 | Sealing structure and balanced seal structure applied to helical-lobe compressor |
| CN114024190B (en) * | 2021-10-27 | 2024-04-30 | 深圳市杰普特光电股份有限公司 | Laser output head and laser equipment |
| JP2023182278A (en) * | 2022-06-14 | 2023-12-26 | 株式会社日立製作所 | screw compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1458332A (en) * | 1974-01-30 | 1976-12-15 | Gutehoffnungshuette Sterkrade | Compressors or pumps |
| JP2002357190A (en) * | 2001-05-30 | 2002-12-13 | Kobe Steel Ltd | Oil-cooled type screw compressor |
| JP2003097487A (en) * | 2001-09-25 | 2003-04-03 | Hitachi Ltd | Centrifugal compressor |
| JP2003518588A (en) * | 1999-12-27 | 2003-06-10 | ライボルト ヴァークウム ゲゼルシャフト ミット ベシュレンクテル ハフツング | Cooling screw type vacuum pump |
| JP2008196312A (en) * | 2007-02-08 | 2008-08-28 | Kobe Steel Ltd | Screw fluid machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2807820B2 (en) * | 1989-01-26 | 1998-10-08 | 北越工業株式会社 | Oil-free screw vacuum pump |
| SE502099C2 (en) * | 1992-12-21 | 1995-08-14 | Svenska Rotor Maskiner Ab | screw compressor with shaft seal |
| JP4638582B2 (en) * | 2000-09-08 | 2011-02-23 | 北越工業株式会社 | Shaft seal structure of oil-free screw compressor |
| JP2002221177A (en) * | 2001-01-24 | 2002-08-09 | Toyota Industries Corp | Shaft sealing structure of vacuum pump |
| JP5348924B2 (en) | 2008-04-09 | 2013-11-20 | 株式会社神戸製鋼所 | Screw fluid machine |
-
2009
- 2009-11-06 JP JP2009255008A patent/JP5138662B2/en not_active Expired - Fee Related
-
2010
- 2010-11-01 CN CN 201010534990 patent/CN102052319B/en not_active Expired - Fee Related
- 2010-11-05 KR KR1020100109490A patent/KR101220665B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1458332A (en) * | 1974-01-30 | 1976-12-15 | Gutehoffnungshuette Sterkrade | Compressors or pumps |
| JP2003518588A (en) * | 1999-12-27 | 2003-06-10 | ライボルト ヴァークウム ゲゼルシャフト ミット ベシュレンクテル ハフツング | Cooling screw type vacuum pump |
| JP2002357190A (en) * | 2001-05-30 | 2002-12-13 | Kobe Steel Ltd | Oil-cooled type screw compressor |
| JP2003097487A (en) * | 2001-09-25 | 2003-04-03 | Hitachi Ltd | Centrifugal compressor |
| JP2008196312A (en) * | 2007-02-08 | 2008-08-28 | Kobe Steel Ltd | Screw fluid machine |
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| CN105927548A (en) * | 2016-06-21 | 2016-09-07 | 西安交通大学 | Water-spray screw steam compressor |
| CN109404282A (en) * | 2018-12-19 | 2019-03-01 | 苏州通润驱动设备股份有限公司 | A kind of shaft seal structure and its monitoring system of screw rod vapour compression machine |
| CN109404282B (en) * | 2018-12-19 | 2020-09-04 | 苏州通润驱动设备股份有限公司 | Shaft seal structure of screw steam compressor and monitoring system thereof |
| CN109595169A (en) * | 2019-01-14 | 2019-04-09 | 冰轮环境技术股份有限公司 | Oil free screw compressor sealing mechanism and control method |
| CN115875305A (en) * | 2023-03-03 | 2023-03-31 | 鸿陆智能科技(山东)有限公司 | Combined sealing structure of MR centrifugal steam compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110050372A (en) | 2011-05-13 |
| JP5138662B2 (en) | 2013-02-06 |
| CN102052319B (en) | 2013-01-09 |
| JP2011099395A (en) | 2011-05-19 |
| KR101220665B1 (en) | 2013-01-09 |
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