CN2709680Y - Vortex compressor - Google Patents
Vortex compressor Download PDFInfo
- Publication number
- CN2709680Y CN2709680Y CN 200420001403 CN200420001403U CN2709680Y CN 2709680 Y CN2709680 Y CN 2709680Y CN 200420001403 CN200420001403 CN 200420001403 CN 200420001403 U CN200420001403 U CN 200420001403U CN 2709680 Y CN2709680 Y CN 2709680Y
- Authority
- CN
- China
- Prior art keywords
- end plate
- scroll
- layer
- mentioned
- vortex circle
- 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.)
- Expired - Lifetime
Links
Landscapes
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model relates to a scroll compressor, particularly a scroll compressor which prevents a swirl disk from generating interference caused by too high exhaust temperature. Even if the exhaust temperature of the compressor is too high, the poor lubrication can not be caused according to the scroll compressor of the utility model, and the compressor can also continuously run. A concave part 21e is formed on the central part of the back side positioned on one side of a main member 21d of an end plate 21a of a fixed swirl disk 21, and the side of the main member of the end plate of the fixed swirl disk is opposite to a swirl ring 21b. An auxiliary member 21f is inlaid in the concave part 21e. The main member 21d is made of cast iron. The auxiliary member 21f is composed of copper or aluminum. A linear expansion coefficient of the back side at the central part of the end plate 21a is larger that of the front side of the swirl ring 21b. Therefore, when the exhaust temperature becomes high, the central part of the end plate 21a swells to the back side. Accordingly, the clearance between the end plate 21a and the swirl ring 22b can be ensured. The scroll compressor of the utility model is suitable for compressing refrigerants, etc.
Description
Technical field
The utility model relates to scroll compressor, particularly, is related to and prevents the scroll compressor that causes the interference of scroll to take measures owing to excessive discharge temperature.
Background technique
In the past, using scroll compressor as the compressor that comes compression refrigerant gas with freeze cycle always.This scroll compressor has fixed scroll and rotation scroll in casing.These two kinds of scroll have end plate respectively and protrude the Vorticose vortex circle that is arranged on this end plate.Fixed scroll is fixed on the casing, and the rotation scroll is connected on the eccentric part of live axle, can revolve round the sun.The vortex circle of this rotation scroll does not carry out rotation under the state that the vortex circle with fixed scroll meshes, only revolve round the sun.Like this, formed pressing chamber just can dwindle continuously between two scroll, with the gas in the compression pressing chamber.
, in above-mentioned scroll compressor, for example,, recognized that the temperature of the fluid of discharging from pressing chamber can excessively raise as disclosing in the patent documentation 1 (No. 3084105 patent gazette).That is, for example, under the expansion valve closing state of cryogen circuit, compressor is found time under the situations such as running, the temperature of the refrigerant of discharge will raise unusually.This be because, under the also still very high situation of the pressure of the exhaust side of compressor, just the pressure of suction side is lowered, compare the cause that increases unusually when making compression ratio with usual running.
And, when the temperature anomaly of the refrigerant of discharging raises, the just thermal expansion of vortex circle of scroll, it is excessive that the surface pressure between its top end and the end plate just becomes, and vortex circle and end plate just may wear and tear or damage.In addition, the frictional heat that produces owing to the slide relative between the vortex circle has increased, and is superimposed with the rising of delivery temperature, and oily temperature just rises, and impels the lubricant oil of refrigerating machine to become bad, may become the reason of insufficient lubrication.
In order to solve this problem that produces owing to unusual intensification, in the scroll compressor that in above-mentioned patent documentation 1, is disclosed, the hyperthermia induced cryogen of discharging by means of making leaks in the low-pressure section that is provided with drive motor, this drive motor is heated up, thereby stop compressor operation.
Specifically, in this compressor,, in this low-pressure section, drive motor is set the inner low-pressure section that has been full of the low-pressure refrigerant that sucks that forms of casing.On the other hand, the bifurcated passage that is communicated with low-pressure section is connected on the exhaust passage of the flow of refrigerant of discharging from pressing chamber.On the attachment portion of the bifurcated passage on this exhaust passage, be provided with the valve of dual metal type.When the excessive temperature of the refrigerant of discharging rose, this dual metal type valve was just opened.Like this, when the excessive temperature of the refrigerant of discharging rose, the dual metal type valve was just worked, and the hyperthermia induced cryogen guiding low-pressure section with discharging rises the temperature of drive motor.Then, the temperature that the temperature transducer that the protection motor is used detects drive motor has risen, and compressor is shut down, thereby avoided compressor to remain in operation under the very high state of delivery temperature.
, the compressor in the past that is disclosed in above-mentioned communique is because its structure is when delivery temperature excessively rises, drive motor is stopped operating, for example, when finding time to turn round, drive motor has just stopped at once, so existing finds time to turn round needs to finish the problem of long time.In addition, because compressor starts repeatedly and stops, may damaging the reliability of compressor.
Summary of the invention
Therefore, the utility model because above this some and put forward, its objective is provides a kind of like this scroll compressor, the improvement of this scroll compressor by scroll is scheduled to, even delivery temperature is under the state of bringing up to a certain degree, can not cause insufficient lubrication yet, still can remain in operation.
For achieving the above object, in the utility model, at least the middle body of end plate 21a, the 22a of a scroll 21,22 is made two-layerly, and in two-layer and that one deck vortex circle 21b, the opposite side of 22b this are made and relatively are easy to thermal expansion.
Specifically, the prerequisite of first model utility is a kind of scroll compressor, it has the Vorticose vortex circle 21b of front one side that is vertically set on end plate 21a, 22a respectively, a pair of scroll 21,22 of 22b, vortex circle 21b, the 22b of each scroll 21,22 intermesh, and have formed pressing chamber 37.And, at the end plate 21a of at least one scroll of above-mentioned scroll 21,22, the middle body of 22a, form the first layer that is positioned at front one side that vortex circle 21b, 22b vertically are set, and be positioned at the not vertical second layer that the back side one side of vortex circle 21b, 22b is set; The linear expansion coeffcient of the material of the above-mentioned second layer is bigger than the linear expansion coeffcient of above-mentioned first layer material.
In addition, second model utility is in first model utility, the end plate 21a, the 22a that have formed the first layer and the second layer have following parts: be made of one with vortex circle 21b, 22b, constitute above-mentioned first layer, and the mouth of recess 21e is towards the master unit 21d that opens with the back side of this vortex circle 21b, 22b opposition side; And make planar, and accomplish to embed among the above-mentioned recess 21e outer peripheral surface and above-mentioned master unit 21d and combine closely, constitute the secondary parts 21f of the above-mentioned second layer.
In addition, the 3rd model utility is in first model utility, and the end plate 21a, the 22a that have formed the first layer and the second layer have following parts: be made of one with vortex circle 21b, 22b, constitute the master unit 21d of above-mentioned first layer; And make planar, and be bonded on on the above-mentioned master unit 21d and back side vortex circle 21b, the opposite side of 22b, constitute the secondary parts 21f of the above-mentioned second layer.
That is, in first model utility, when Driven Compressor 10, the vortex circle 21b of each scroll 21,22,22b intermeshes and the pressing chamber 37 that forms is shrinking compressed fluid in central mobile.Therefore, the middle body of end plate 21a, 22a just is exposed to and is compressed under the fluid that becomes high temperature.Therefore, in the driving process of compressor 10, the middle body of end plate 21a, 22a just is in the condition of high temperature.And, for example, to close under the situations such as the running of finding time that expansion valve turns round, the temperature the when temperature of the middle body of end plate 21a, 22a will turn round than usual is higher.
At the end plate 21a of at least one scroll of two scroll 21,22, the middle body of 22a, be positioned at the material of the second layer of the back side one side that does not have vertically disposed vortex circle 21b, 22b, its linear expansion coeffcient is bigger than the linear expansion coeffcient of the material of the first layer that is positioned at vertical front one side that is provided with vortex circle 21b, 22b.Therefore, be exposed to the end plate 21a under the high temperature fluid, the middle body of 22a, with the second layer of vortex circle 21b, the opposite side of 22b, than the easy thermal expansion of first layer of vortex circle 21b, 22b one side.Like this, because the difference of two-layer thermal expansion, the distortion of protuberance just takes place in the middle body of end plate 21a, 22a towards a side opposite with vortex circle 21b, 22b.That is, the middle body of end plate 21a, 22a plays a part with bimetal same.Therefore, on the middle body of end plate 21a, 22a, the interval between two end plates 21a, the 22a has enlarged.
In addition, in second model utility, constitute the master unit 21d of the first layer of end plate 21a, 22a, its front and vortex circle 21b, 22b are made of one, on the other hand, with the back side of this vortex circle 21b, the opposite side of 22b on the recess 21e of opening is arranged.On the recess 21e of this master unit 21d, embed the secondary parts 21f of the second layer that constitutes end plate 21a, 22a.The linear expansion coeffcient of the material of this secondary parts 21f is bigger than the linear expansion coeffcient of the material of master unit 21d.Therefore,, be provided with this side of the back side of secondary parts 21f, be easy to thermal expansion than front one side that is provided with master unit 21d at the middle body of end plate 21a, 22a.In addition, the external peripheral surface of secondary parts 21f embeds among the recess 21e, and 21d contacts closely with master unit.Therefore, during secondary parts 21f thermal expansion under being exposed to high-temperature gas, the inward flange of recess 21e will be come by secondary parts 21f expansion.As a result, the middle body of end plate 21a, 22a just can be out of shape, and bloats towards a side opposite with vortex circle 21b, 22b.That is, at the middle body of end plate 21a, 22a, master unit 21d and secondary parts 21f have play a part with bimetal same.As a result, the interval between end plate 21a, the 22a of two scroll 21,22 has really enlarged.
In addition, in the 3rd model utility, vortex circle 21b, 22b are made of one with it in the front of the master unit 21d of the first layer that constitutes end plate 21a, 22a.In addition, the secondary parts 21f that constitutes the second layer of end plate 21a, 22a is combined on master unit 21d and back side vortex circle 21b, the opposite side of 22b.The linear expansion coeffcient of the material of this secondary parts 21f is bigger than the linear expansion coeffcient of the material of master unit 21d.Therefore, be provided with the back side one side of secondary parts 21f, will be easy to thermal expansion than front one side that is provided with the master unit 21d that is positioned at vortex circle 21b, 22b one side at the middle body of end plate 21a, 22a.Like this, be exposed to high-temperature gas following time at the middle body of end plate 21a, 22a, because secondary parts 21f is easier to expand than master unit 21d, so, because the difference of both thermal expansions, the middle body of end plate 21a, 22a just can be out of shape, and bloats towards a side opposite with vortex circle 21b, 22b.That is, at the middle body of end plate 21a, 22a, master unit 21d and secondary parts 21f become one, and have play a part with bimetal same.As a result, the interval between end plate 21a, the 22a of two scroll 21,22 has really enlarged.
As mentioned above, according to the utility model, can obtain following effect.
In first model utility, on the middle body of end plate 21a, the 22a of at least one scroll, the linear expansion coeffcient of the material of the second layer is bigger than the linear expansion coeffcient of the material of first layer.Therefore, be exposed to the end plate 21a under the high-temperature gas, the middle body of 22a just is out of shape, bloat towards a side opposite with vortex circle 21b, 22b.As a result, though also thermal expansion of vortex circle 21b, 22b but still can be guaranteed gap between end plate 21a, 22a and vortex circle 21b, the 22b, thereby can prevent that the surface pressure between the top end of end plate 21a, 22a and vortex circle 21b, 22b from increasing.Like this,, also can reduce the wearing and tearing of end plate 21a, 22a and vortex circle 21b, 22b, prevent its damage even under the very high state of the delivery temperature of compressor 10.Therefore, according to the utility model, even be under the very high operating condition of delivery temperature at compressor 10, compressor 10 still can remain in operation.Like this, just can find time at short notice to turn round.
In addition, because supplying lubricating oil between slip surface stably, so can prevent insufficient lubrication.The heat owing to can reduce friction whereby raises so can suppress the temperature of end plate 21a, 22a.As a result, just can prevent that the former thereby lubricant oil that causes becomes bad because of burn etc.
In addition, needn't consider the thermal expansion of vortex circle 21b, 22b under situation such as find time to turn round, and adjust the gap between end plate 21a, 22a and vortex circle 21b, the 22b very greatly in advance.That is, can transfer end plate 21a, the 22a in usual when running and the gap between vortex circle 21b, the 22b very for a short time.Therefore,, the leakage rate of the fluid that leaks the gap between end plate 21a, 22a and vortex circle 21b, 22b can be reduced, the efficient of compressor 10 can be improved according to the utility model.
In second model utility, secondary parts 21f is embedded among the recess 21e that the back side of the master unit 21d of at least one end plate 21a, 22a forms, and both tight crimping.This secondary parts 21f is easy to thermal expansion than master unit 21d.Therefore, according to the utility model, the middle body of end plate 21a, 22a can play a part with bimetal same.Like this, the middle body of end plate 21a, 22a positively is out of shape, bloats to a side opposite with vortex circle 21b, 22b.
In the 3rd model utility, secondary parts 21f combines with the back side of the master unit 21d of at least one end plate 21a, 22a.This secondary parts 21f is easy to thermal expansion than master unit 21d.Therefore, according to the utility model, make the middle body of end plate 21a, 22a can play a part with bimetal same.Like this, the middle body of end plate 21a, 22a positively is out of shape, bloats to a side opposite with vortex circle 21b, 22b.
Description of drawings
Fig. 1 is the integrally-built sectional view of the utility model first embodiment's scroll compressor;
Fig. 2 is the stereogram of compressing mechanism of the utility model first embodiment's scroll compressor;
Fig. 3 is the schematic partial sectional view of the utility model second embodiment's scroll compressor.
Embodiment
Below, describe embodiment of the present utility model in detail with reference to accompanying drawing.
-the first embodiment-
First embodiment's scroll compressor is the compressor of compression refrigerant gas, and connection is not represented in the drawings, carried out on the cryogen circuit of refrigerant gas circuit freeze cycle work.
As shown in Figure 1, this scroll compressor 10 has the casing 11 that is made of the vaulted type pressurized container that seals.In the inside of this casing 11, held the compressing mechanism 15 of compression refrigerant gas and driven the drive motor 16 of this compressing mechanism 15.This drive motor 16 is arranged in the below of compressing mechanism 15, and is connected with this compressing mechanism 15 by live axle 17.
Above-mentioned compressor structure 15 has fixed scroll 21 and rotation scroll 22.Two scroll 21,22 have end plate 21a, 22a respectively and are vertically set on Vorticose vortex circle 21b, 22b on this end plate 21a, the 22a.Vortex circle 21b, the 22b of above-mentioned each scroll 21,22 are designed to intermeshing state.
The end plate 21a of fixed scroll 21, in a side of the rotation scroll 22 of its excircle end, promptly downside has formed the tubular of protruding that the end is arranged.The excircle end of fixed scroll 21 is mounted and fixed on the internal surface of casing 11.The vortex circle 21b of fixed scroll 21 makes the following protrusion that faces down from end plate 21a.In addition, the head portion at vortex circle 21b is provided with apex seal 21c.
On the underpart of the excircle end of the end plate 21a of fixed scroll 21, flat framework 24 has been installed in airtight mode.This framework 24 is fixed on the casing 11, and connects with fixed scroll 21.Like this, just between fixed scroll 21 and framework 24, formed inner space 26.Middle body at framework 24 is provided with opening, and on the edge of this opening, formed towards downside, protrude tubular protuberance 28.On framework 24, the above-mentioned rotation scroll 22 that is arranged in the above-mentioned inner space 26 is housed.In addition, at the upper surface of framework 24, be provided be used for to and the end plate 22a of rotation scroll 22 between the oil groove 29 of supplying lubricating oil.
On the lower surface of the end plate 22a that rotates scroll 22, formed the bearing part 30 that protrudes the tubular that is provided with.The inside that this bearing part 30 inserts the protuberance 28 of said frame 24, the position of the head portion of this bearing part 30 is on the intermediate portion in raised part 28.Raised part 28 live axle 17 by sliding supported condition, and it can freely be rotated.The head portion of live axle 17 (upper end portion) inserts in the bearing part 30, and is arranged in the bearing part 30 by sliding bearing 31, can freely rotate.
Above-mentioned drive motor 16 has stator 33 that is fixed on the casing 11 and the inside that is arranged on this stator 33, the rotor 34 that can freely rotate.Above-mentioned live axle 17 intercalations are on this rotor 34, and like this, when supply electric power, live axle 17 just can rotate.
The head portion of live axle 17 is eccentric with respect to shaft axis.Like this, when live axle 17 rotations, rotation scroll 22 is just rotated on framework 24.In addition, rotation scroll 22 also is bearing on the framework 24 by the Euclidean annulus of not representing among the figure, makes it not carry out rotation.
The vortex circle 22b of rotation scroll 22 is arranged to protruding upward.On the head portion of this vortex circle 22b, be provided with end sealing pad 22c.And, at the top end of vortex circle 21b, the 22b of two scroll 21,22 and respectively between the end face on end plate 22a, the 21a of another scroll 22,21, in the middle of forming across the slip surface of oil film.In addition, between vortex circle 21b, the 22b of two scroll 21,22, be separated to form pressing chamber 37.When rotation scroll 22 when revolving round the sun, this pressing chamber 37 just one side from the excircle part of above-mentioned inner space 26 to central mobile, one side is dwindled.The excircle of this inner space 26 has partly constituted the low-pressure section of casing 11 inside.
Refrigerant in the cryogen circuit is imported the sucking pipe 41 in the excircle part of above-mentioned inner space 26 and the refrigerant in the casing 11 is derived the outlet pipe 42 of casing 11 outsides, respectively with airtight combinations of states on said machine casing 11.On the middle body of the end plate 21a of fixed scroll 21, formed the exhaust port 43 that the middle body of inner space 26 is communicated with the upper space of fixed scroll 21.Exhaust port 43 is to be used for being discharged to the hole of going in the casing 11 at pressing chamber 37 through the refrigerant gas of overcompression.
In fixed scroll 21 and framework 24, formed the coolant channel 44 that the lower space of the refrigerant of upper space importing framework 24 downsides is gone.The inner of above-mentioned outlet pipe 42 is at this lower space split shed.That is, the structure of the scroll compressor 10 among first embodiment is structures that casing 11 inside become the high-pressure section that has been full of the refrigerant gas of discharging, the compressor 10 of promptly so-called high pressure vaulted type.
Oil sump 46 has been formed on the bottom in casing 11, is provided with the oil feed pump 47 that the lubricant oil in the oil sump 46 is aspirated up by means of the rotation of this live axle 17 in the underpart of above-mentioned live axle 17.In live axle 17, formed the oil supply gallery (not shown) of the lubricant oil circulation that allows come up with oil feed pump 47 suction.Flow through the lubricant oil of this oil supply gallery, its part is supplied to bearing part 30, and on the other hand, remaining lubricant oil is supplied to inner space 26 by above-mentioned oil groove 29.
As shown in Figure 2, the end plate 21a of said fixing scroll 21 has the master unit 21d of the main body that becomes this end plate 21a, and the secondary parts 21f that is positioned at the middle body of this master unit 21d.Above-mentioned master unit 21d promptly in its lower section, has formed the vortex circle 21b that becomes one with it in its front, on the other hand, at its back side, promptly on an opposite side with vortex circle 21b, has formed the recess 21e of opening.This recess 21e digs down one section and the circular pit that forms to the back side of master unit 21d.The degree of depth of this recess 21e is roughly half of thickness of master unit 21d middle body.The degree of depth of recess 21e and internal diameter are that temperature and the amount of deformation of master unit 21d when having considered running determines afterwards.
Above-mentioned secondary parts 21f makes planar, and embeds among the above-mentioned recess 21e.That is, this secondary parts 21f is positioned at the back side one side of the master unit 21d on the middle body of end plate 21a.Because secondary parts 21f makes with thin plate, so when receiving high heat, the increase of diametric(al) length is bigger than thickness direction.The outer peripheral surface of secondary parts 21f embeds among the recess 21e, closely is crimped on the inner peripheral surface and bottom surface of recess 21e.Therefore, secondary parts 21f is in and can be applied to state on the master unit 21d to the power that produces owing to thermal expansion.And the upper surface of the upper surface of secondary parts 21f and master unit 21d is on same.
Secondary parts 21f, for example, available copper or aluminium are made, and on the other hand, end plate 21a then is for example, cylinder iron to make.Their linear expansion coeffcient, for example, copper is 23.6 * 10
-6K
-1, aluminium is 16.5 * 10
-6K
-1, grey cast iron is 9.2～11.8 * 10
-6K
-1That is, the material of secondary parts 21f is compared with the material of master unit 21d, and linear expansion coeffcient is much bigger.In other words,, do not establish the elongation that is accompanied by thermal expansion of the back side one side of vortex circle 21b at the middle body of end plate 21a, bigger than front one side that is provided with vortex circle 21b.And the middle body of this master unit 21d has constituted so-called first layer in the utility model, and secondary parts 21f has constituted the so-called second layer in the utility model.Above-mentioned exhaust port 43 is made the middle body of leap master unit 21d and the middle body of secondary parts 21f.
In first embodiment's scroll compressor 10, vortex circle 21b, the 22b of two scroll 21,22 rotate scroll 22 relative and fixed scroll 21 rotations under intermeshing state.By means of this rotation, the refrigerant gas in the cryogen circuit internally the excircle in space 26 partly suck in the pressing chamber 37.Then and since pressing chamber 37 one side internally the excircle part in space 26 move to middle body, one side is dwindled, so the refrigerant gas in the pressing chamber 37 just are compressed and heat up thereupon.So the end plate 21a of fixed scroll 21 just is exposed under the hyperthermia induced refrigerant gas of middle body.At this moment, for example, if when finding time to turn round, the refrigerant pressure of exhaust side is still very high, and the pressure of the refrigerant of the suction side in the suction pressing chamber 37 descends gradually, compares during with usual running, it is very big that compression ratio becomes, and it is very high that the temperature of exhaust becomes.
At the middle body that is exposed to the end plate 21a under this hyperthermia induced refrigerant gas, the secondary parts 21f of the back side one side is than the easier thermal expansion of master unit 21d of front one side.And when secondary parts 21f thermal expansion, the inward flange of the recess 21e on master unit 21d can be owing to secondary parts 21f expands.Therefore, the middle body of end plate 21a just is out of shape, and bloats towards the direction opposite with vortex circle 21b.That is, at the middle body of end plate 21a, 22a, master unit 21d and secondary parts 21f play a part with bimetal same.As a result, the interval between two end plates 21a, the 22a of middle body has enlarged, and the gap of the head portion of end plate 21a, 22a and vortex circle 21b, 22b has also enlarged.
Therefore, even vortex circle 21b, 22b thermal expansion because the refrigerant gas after being exposed to intensification is following, but still can guarantee the gap between the head portion of end plate 21a, 22a and vortex circle 21b, 22b, prevent the increase of surface pressure between the top end of end plate 21a, 22a and vortex circle 21b, 22b.Like this, even compressor 10 is under the very high state of delivery temperature, also can reduce the wearing and tearing of end plate 21a, 22a and vortex circle 21b, 22b, and prevent its damage.Therefore, according to first embodiment,, the running of compressor 10 is continued even compressor 10 is in the very high operating condition of delivery temperature.
In addition, because supplying lubricating oil between slip surface stably, so can prevent insufficient lubrication.And, because the heat of therefore can also reducing friction, so can suppress the intensification of end plate 21a, 22a.As a result, prevented that the change of the lubricant oil that causes because of reasons such as burns is bad.
In addition, needn't consider the thermal expansion of vortex circle 21b, 22b under situation such as find time to turn round, and adjust the gap between end plate 21a, 22a and vortex circle 21b, the 22b very greatly in advance.In other words, can transfer end plate 21a, the 22a in usual when running and the gap between vortex circle 21b, the 22b very for a short time.Also having, is with very big metal of linear expansion coeffcient because end plate 21a has only the back side one side, compares with the very big metal situation of the linear expansion coeffcient of aluminium and so on all over fixed scroll 21, and the thermal expansion of scroll 21a is reduced.As a result, when usual running, reduced, can improve the efficient of compressor 10 from the leakage rate of the refrigerant gas of the clearance leakage between end plate 21a, 22a and vortex circle 21b, the 22b.
In addition, in first embodiment, be secondary parts 21f is embedded among the recess 21e of master unit 21d and to constitute, make the middle body of end plate 21a can play the effect same with bimetal.Therefore, can make the middle body of end plate 21a positively deform, bloat towards a side opposite with vortex circle 21b, 22b.
-the second embodiment-
Fig. 3 represents second embodiment of the present utility model.In addition, in a second embodiment, the structural element identical with first embodiment is marked with identical label, and omits its detailed description.
In a second embodiment, different with first embodiment, fixed scroll 21 is the master unit 21d that secondary parts 21f is bonded in end plate 21a is gone up and to constitute.That is, in a second embodiment, on master unit 21d, be not provided for embedding the recess 21e of secondary parts 21f.
Secondary parts 21f makes discoideus.And, the upper surface of the lower surface of secondary parts 21f and master unit 21d middle body, promptly with the surface adhesion of the opposite side of vortex circle 21b, and, even thermal expansion, master unit 21d and secondary parts 21f still bond together, and relative displacement does not take place in both.That is, master unit 21d and secondary parts 21f are in the synergistic state of the power of thermal expansion.In addition, secondary parts 21f for example, makes with copper or aluminium, and on the other hand, master unit 21d then cylinder iron makes.That is, the linear expansion coeffcient of the material of secondary parts 21f is bigger than the linear expansion coeffcient of master unit 21d material.And this master unit 21d constitutes the first layer in the utility model, and secondary parts 21f constitutes the second layer in the utility model.
In a second embodiment, on the middle body of the end plate 21a that is exposed to the hyperthermia induced refrigerant gas, the secondary parts 21f that is positioned at the back side one side is than the easier thermal expansion of master unit 21d that is positioned at front one side.Therefore, because secondary parts 21f is bigger than master unit 21d swell increment, so by this thermal expansion difference, the middle body of end plate 21a just is out of shape, and bloats towards a side opposite with vortex circle 21b.That is, at the middle body of end plate 21a, 22a, master unit 21d and secondary parts 21f become one, and play a part with bimetal same.The result, even vortex circle 21b, 22b are because the refrigerant gas after being exposed to intensification has produced thermal expansion down, but owing to the interval between middle body two end plates 21a, 22a has enlarged, so the gap between the head portion of end plate 21a, 22a and vortex circle 21b, 22b has also enlarged.
As for other structure, effect and effect, all identical with above-mentioned first embodiment.
-other embodiment-
In above-mentioned second embodiment, secondary parts 21f only with the master unit 21d of end plate 21a on middle body bonding, but, also can make into secondary parts 21f is bonded on the entire upper surface of master unit 21d.In addition, the structure of the secondary parts 21f that also is not limited only to bond for example, also can be carried out soldering.Main is, the structure on every back side that secondary parts 21f is combined in master unit 21d can.
In addition, in above-mentioned various embodiments, its structure is to form two-layer structure on the end plate 21a of fixed scroll 21, but, also can make on the end plate 22a of rotation scroll 22, to form the structure of the first layer and the second layer into.In addition, also can on two scroll 21,22, all form two-layer structure.
In addition, in the various embodiments described above, be not limited only to end plate 21a is designed to the differentiated structure of linear expansion coeffcient of master unit 21d and secondary parts 21f.Main is, end plate 21a will be equipped with the different different kinds of metals of two-layer linear expansion coeffcient, and to be easy to thermal expansion than one deck of vortex circle 21b one side just passable with one deck of the opposite side of vortex circle 21b.
In addition, in above-mentioned first embodiment, also can be in the recess 21e that secondary parts 21f is embedded master unit 21d in, secondary parts 21f is bonded on the master unit 21d.Like this, secondary parts 21f just can be out of shape with master unit 21d.
Claims (3)
1. scroll compressor, it has a pair of scroll (21,22) of the Vorticose vortex circle (21b, 22b) of front one side that is vertically set on end plate (21a, 22a) respectively, the vortex circle (21b, 22b) of each scroll (21,22) intermeshes, and has formed pressing chamber (37); It is characterized in that,
Middle body at the end plate (21a, 22a) of at least one scroll of above-mentioned scroll (21,22), form the first layer that is positioned at front one side that vortex circle (21b, 22b) vertically is set, and be positioned at the not vertical second layer that the back side one side of vortex circle (21b, 22b) is set;
The linear expansion coeffcient of the material of the above-mentioned second layer is bigger than the linear expansion coeffcient of above-mentioned first layer material.
2. scroll compressor as claimed in claim 1 is characterized in that,
The end plate (21a, 22a) that has formed the first layer and the second layer has following parts:
(21b, 22b) is made of one with the vortex circle, constitutes above-mentioned first layer, and the mouth of recess (21e) is towards the master unit of opening with the back side of this vortex circle (21b, 22b) opposition side (21d); And
Make planar, and accomplish to embed in the above-mentioned recess (21e) outer peripheral surface and above-mentioned master unit (21d) and combine closely, constitute the secondary parts (21f) of the above-mentioned second layer.
3. scroll compressor as claimed in claim 1 is characterized in that,
The end plate (21a, 22a) that has formed the first layer and the second layer has following parts:
(21b, 22b) is made of one with the vortex circle, constitutes the master unit (21d) of above-mentioned first layer; And
Make planar, and be bonded on on the above-mentioned master unit (21d) and the back side opposite side of vortex circle (21b, 22b), constitute the secondary parts (21f) of the above-mentioned second layer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP010911/2003 | 2003-01-20 | ||
| JP2003010911A JP4265223B2 (en) | 2003-01-20 | 2003-01-20 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2709680Y true CN2709680Y (en) | 2005-07-13 |
Family
ID=32899975
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100393098A Expired - Fee Related CN1297748C (en) | 2003-01-20 | 2004-01-19 | Vortex compressor |
| CN 200420001403 Expired - Lifetime CN2709680Y (en) | 2003-01-20 | 2004-01-20 | Vortex compressor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100393098A Expired - Fee Related CN1297748C (en) | 2003-01-20 | 2004-01-19 | Vortex compressor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4265223B2 (en) |
| CN (2) | CN1297748C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297748C (en) * | 2003-01-20 | 2007-01-31 | 大金工业株式会社 | Vortex compressor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3109359B2 (en) * | 1993-12-24 | 2000-11-13 | 松下電器産業株式会社 | Hermetic scroll compressor and method for assembling the same |
| JPH11236887A (en) * | 1998-02-23 | 1999-08-31 | Mitsubishi Heavy Ind Ltd | Scroll type fluid machinery and manufacture thereof |
| EP1293675A4 (en) * | 2000-06-22 | 2004-04-14 | Mitsubishi Heavy Ind Ltd | Scroll compressor |
| JP2002054584A (en) * | 2000-08-11 | 2002-02-20 | Fujitsu General Ltd | Scroll type compressor |
| JP2002155875A (en) * | 2000-11-22 | 2002-05-31 | Matsushita Electric Ind Co Ltd | Scroll compressor |
| JP2002213375A (en) * | 2001-01-19 | 2002-07-31 | Fujitsu General Ltd | Scroll compressor |
| JP4265223B2 (en) * | 2003-01-20 | 2009-05-20 | ダイキン工業株式会社 | Scroll compressor |
-
2003
- 2003-01-20 JP JP2003010911A patent/JP4265223B2/en not_active Expired - Fee Related
-
2004
- 2004-01-19 CN CNB2004100393098A patent/CN1297748C/en not_active Expired - Fee Related
- 2004-01-20 CN CN 200420001403 patent/CN2709680Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297748C (en) * | 2003-01-20 | 2007-01-31 | 大金工业株式会社 | Vortex compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1297748C (en) | 2007-01-31 |
| JP2004225548A (en) | 2004-08-12 |
| CN1517555A (en) | 2004-08-04 |
| JP4265223B2 (en) | 2009-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9903370B2 (en) | Scroll compressor with reduced upsetting moment | |
| CN1090718C (en) | Worm Comressor with small separation force between fixed and circular screw pieces | |
| AU2003227511B2 (en) | Rotary compressor | |
| EP2169230A2 (en) | Cylinder and rotary compressor having the same | |
| CN2714848Y (en) | Scroll compressor | |
| CN2709680Y (en) | Vortex compressor | |
| JP2004225644A (en) | Scroll compressor | |
| JP4470636B2 (en) | Scroll type fluid machine | |
| JP2008121481A (en) | Scroll fluid machine | |
| CN1354326A (en) | Vortex compressor | |
| JP3996827B2 (en) | Hermetic compressor | |
| CN2769556Y (en) | Vortex compressor | |
| JP2017155718A (en) | Fluid machine | |
| CN105156330A (en) | Oil-return device for scroll compressor and scroll compressor | |
| CN2709679Y (en) | Vortex compressor | |
| JP4501628B2 (en) | Manufacturing method of scroll compressor | |
| JPWO2020261410A1 (en) | Scroll compressor | |
| WO2023221677A1 (en) | Compression assembly, fixed scroll, and scroll compressor | |
| CN217206883U (en) | Water vapor screw compressor suitable for medium-high pressure working condition | |
| CN215213839U (en) | Pump body structure for improving sealing performance of refrigeration compressor | |
| JP7398642B2 (en) | Compressor with injection mechanism | |
| JP2005163745A (en) | Scroll compressor | |
| JP2005171952A (en) | Scroll compressor | |
| JP2008232048A (en) | Scroll compressor | |
| CN113482919A (en) | Scroll compressor's seal structure, scroll compressor and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040120 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |