CN204610280U - Scroll compressor having a plurality of scroll members - Google Patents
Scroll compressor having a plurality of scroll members Download PDFInfo
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- CN204610280U CN204610280U CN201520076138.XU CN201520076138U CN204610280U CN 204610280 U CN204610280 U CN 204610280U CN 201520076138 U CN201520076138 U CN 201520076138U CN 204610280 U CN204610280 U CN 204610280U
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- boss
- recess
- sealing component
- scroll element
- scroll
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Abstract
A scroll compressor, comprising: a housing; a compression mechanism including a fixed scroll member and a movable scroll member; a partition plate disposed in the housing and adjacent to the non-orbiting scroll member, a first boss being provided on a lower surface of the partition plate; a first seal member having a first extension configured to abut a lower end face of the first boss of the partition and a second extension configured to abut an annular wall of the first recess of the non-orbiting scroll member to separate a first pressure region from a second pressure region within the casing; a first resilient member disposed in the first recess to maintain the first sealing member pressed against the first boss, the non-orbiting scroll member being transitionable between a non-unloaded state and an unloaded state, the first boss being maintained pressed against the first sealing member such that the first sealing member is not squeezed out or ejected by pressure in the pressure region when the non-orbiting scroll member is in the non-unloaded state, the first boss being maintained pressed against the first sealing member and having a lower end surface at least in the first recess when the non-orbiting scroll member is in the unloaded state.
Description
Technical field
The utility model relates to a kind of scroll compressor.
Background technique
The content of this part provide only the background information relevant to the disclosure, and it may not form prior art.
Because scroll compressor has ability to work extremely efficiently, thus scroll compressor is used as the compressor in refrigeration system and HVAC system more prevalently.Normally, scroll compressor comprises and determines dynamic scroll element that scroll element is engaged with each other to form a series of compression chamber.Dynamic scroll element makes the size of compression chamber reduce gradually relative to the rotation determining scroll element and causes the fluid be assigned in each chamber to be compressed.
In a series of compression chambers of scroll compressor, there is the low-pressure cavity being in pressure of inspiration(Pi) of outermost radial outside, the hyperbaric chamber being in exhaust pressure of radial inner side, cavity pressure be between pressure of inspiration(Pi) and exhaust pressure and press chamber.The side of the end plate determining scroll element is provided with recess, and this recess coordinates the chamber being formed and roughly close with dividing plate, this chamber is communicated with middle pressure chamber fluid thus is formed as determining the back pressure cavity that scroll element provides back pressure.Like this, the top of determining scroll element can be in three kinds of different pressure spans, namely, (namely the periphery of determining scroll element is in suction pressure region, low voltage side region), the back pressure cavity of the determining scroll element exhaust ports that is in medium voltage side region and determines scroll element is in exhaust pressure region (that is, region, high pressure side).
Scroll compressor operationally, refrigeration agent in it sucks from low voltage side region, after overcompression, warp discharges region, high pressure side by relief opening, and this medium voltage side region provides back pressure to be pressed against determining scroll element towards dynamic scroll element in the process of refrigerant compression, but, leak if existed between these three different pressure spans, then can cause the problems such as compressor performance reduction, delivery temperature rising.For this reason, between these three pressure spans, have employed sealing configuration, to reduce or to eliminate the leakage between these three pressure spans.The sealing configuration being used for isolating and sealing these three pressure spans has floating seal coil structures peace top ring structure usually.Floating seal coil structures realizes sealing by the seal ring fixing by two pieces of sheet metals, and flat-top seal coil structures is by being realized sealing by spring-supported seal ring.
But, still there is the demand for aspects such as the manufacture cost of the sealability improving sealing configuration, reduction scroll compressor or the assembling difficulty of reduction scroll compressor.
Model utility content
An object of the present utility model is to provide one can to make in compressor the significantly improved scroll compressor of sealability between different pressures region.
Another object of the present utility model is to provide the scroll compressor of the larger upper punch distance of a kind of adaptation.
Another object of the present utility model is to provide the scroll compressor that a kind of manufacture cost is lower, assembling difficulty reduces.
One or more objects to achieve these goals, according to an aspect of the utility model mode of execution, provide a kind of scroll compressor, it comprises: housing, be arranged on the compressing mechanism in described housing, described compressing mechanism is suitable for compression working fluid and comprises determining scroll element and dynamic scroll element, dividing plate, described dividing plate to be arranged in described housing and contiguous describedly to determine scroll element, and the lower surface of described dividing plate is provided with the first boss, first sealing component, first extension part of described first sealing component is configured to lower end surface against described first boss of described dividing plate and the second extension part of described first sealing component is configured to against described annular wall of determining the first recess of scroll element to realize sealing, thus is separated in first pressure span with different pressures in described housing and the second pressure span, and first resilient member, described first resilient member is arranged in described first recess, so that described first sealing component is kept being pressed against on described first boss, wherein, describedly determine scroll element and can change between non-offloaded state and unloaded state, when described determine scroll element be in described non-offloaded state time, described first boss keeps being pressed against described first sealing component and described first sealing component can not be extruded by the pressure in the larger pressure span of pressure in described first pressure span and described second pressure span or eject, when described determine scroll element be in described unloaded state time, described first boss keeps being pressed against described first sealing component and the described lower end surface of described first boss is at least in described first recess.
By this layout of scroll compressor, make to need the gap being undertaken sealing by sealing component to be converted to radial clearance by the axial clearance of prior art, and the setting of this radial clearance is no longer subject to impact and the restriction of determining the distance POP that scroll element axially moves up when providing axial elasticity.Like this, can the thickness of sealing component be set as thin as far as possible thus better sealing effect is provided, in addition, this sealing configuration can also be arranged on to be had in the larger scroll compressor of distance POP, thus guarantees that the scroll compressor that distance POP is larger can obtain better sealing effect.
In addition, in the manufacture with this scroll compressor in present embodiment and assembling process, affect relative less with the size ring (tolerance ring) limiting this radial clearance, this contributes to the thickness reducing sealing component further, thus lift-off seal performance better.In addition, this also suitably can reduce accuracy of manufacturing and the assembly precision of scroll compressor while ensureing sealability, thus can reduce the manufacture cost of whole scroll compressor and reduce assembling difficulty.In addition, in the scroll compressor with this sealing configuration, not easily eject in the process that sealing component assembles at compressor, thus can effectively prevent sealing component from ejecting in assembly process.
According to the another aspect of the utility model mode of execution, the lower surface of described dividing plate is also provided with the second boss, and, described scroll compressor also comprises: the second sealing component, first extension part of described second sealing component is configured to lower end surface against described second boss of described dividing plate and the second extension part of described second sealing component is configured to against described annular wall of determining the second recess of scroll element to realize sealing, thus the 3rd pressure span in described second pressure span and described housing is separated, pressure in wherein said 3rd pressure span is different from the pressure in described first pressure span and described second pressure span, and second resilient member, described second resilient member is arranged in described second recess, so that described second sealing component is kept being pressed against on described second boss, wherein, when described determine scroll element be in described non-offloaded state time, described second boss keeps being pressed against described second sealing component and described second sealing component can not be extruded by the pressure in the larger pressure span of pressure in described second pressure span and described 3rd pressure span or eject, when described determine scroll element be in described unloaded state time, described second boss keeps being pressed against described second sealing component and the described lower end surface of described second boss is at least in described second recess.
According to the another aspect of the utility model mode of execution, described first boss and described second boss are positioned at the radially inner side of another one mode with one is arranged, or described first sealing component and described second sealing component are positioned at the radially inner side of another one mode with one is arranged.
According to the another aspect of the utility model mode of execution, when described determine scroll element be in described non-offloaded state time, the described lower end surface of described first boss to be in described first recess or substantially flush with the upper-end surface of the described annular wall of described first recess.
According to the another aspect of the utility model mode of execution, when described determine scroll element be in described non-offloaded state time, the described lower end surface of described first boss is in the axial direction than the roughly half of the upper-end surface thickness of high described first sealing component at the most of the described annular wall of described first recess.
According to the another aspect of the utility model mode of execution, the described lower end surface of described second boss and the described lower end surface of described first boss are roughly in same level and/or the upper-end surface of the described annular wall of the upper-end surface of the described annular wall of described second recess and described first recess is roughly in same level.
According to the another aspect of the utility model mode of execution, the radial inner peripheral surface of the outer radial periphery face of described first boss and the described annular wall of described first recess is almost parallel.
According to the another aspect of the utility model mode of execution, the described outer radial periphery face in axial direction downward convergent of described first boss, and the described outer radial periphery face of described first boss relative to described first boss described lower end surface residing for plane form the first angle, described first angle is equal to or less than 90 °.
According to the another aspect of the utility model mode of execution, the radial distance between the outer radial periphery face of described first boss and the radial inner peripheral surface of described first recess is less than or equal to the thickness of described first sealing component.
According to the another aspect of the utility model mode of execution, the outer radial periphery face of described second boss is roughly parallel to the outer radial periphery face of described first boss, further, the radial inner peripheral surface of the described annular wall of described second recess is roughly parallel to the radial inner peripheral surface of the described annular wall of described first recess.
According to the another aspect of the utility model mode of execution, the radial distance between the outer radial periphery face of described second boss and the radial inner peripheral surface of described second recess is less than or equal to the thickness of described second sealing component.
According to the another aspect of the utility model mode of execution, the upper-end surface of the described annular wall of described first recess is designed to make determine describedly when scroll element is in described unloaded state to determine scroll element and do not contact with described dividing plate when described apart from the distance of the lower surface facing with the described upper-end surface of the described annular wall of described first recess of described dividing plate in the axial direction.
According to the another aspect of the utility model mode of execution, the upper-end surface of the described annular wall of described second recess is designed to make determine describedly when scroll element is in described unloaded state to determine scroll element and do not contact with described dividing plate when described apart from the distance of the lower surface facing with the described upper-end surface of the described annular wall of described second recess of described dividing plate in the axial direction.
According to the another aspect of the utility model mode of execution, described first extension part of described first sealing component and described second extension part are integrally formed and described first sealing component has the cross section of roughly L shape and/or described first extension part of described second sealing component and described second extension part is integrally formed and described second sealing component has the cross section of roughly L shape.
According to the another aspect of the utility model mode of execution, described first pressure span is corresponding to the low voltage side region be communicated with suction pressure and described second pressure span corresponds to the medium voltage side region be communicated with described dynamic scroll element and the described compression chamber determined in a series of compression chambers formed between scroll element, or, described first pressure span is corresponding to the region, high pressure side be communicated with exhaust pressure and described second pressure span corresponds to the medium voltage side region be communicated with described dynamic scroll element and the described compression chamber determined in a series of compression chambers formed between scroll element.
Accompanying drawing explanation
By the description referring to accompanying drawing, the feature and advantage of one or several mode of execution of the present utility model will become easier to understand.Accompanying drawing as described herein is only be not intended to limit scope of the present utility model by any way for purpose of explanation, and accompanying drawing is not drawn in proportion, and some features may be exaggerated or reduce to show the details of particular elements.In the accompanying drawings:
Fig. 1 is the longitudinal section of conventional scroll compressor;
Fig. 2 is the partial enlarged view of the sealing configuration of the scroll compressor of the routine shown in Fig. 1;
Fig. 3 is the explanatory view of the size relationship relevant to the axial seal gap of sealing configuration shown in Fig. 2;
Fig. 4 is the partial sectional view of the sealing configuration of the scroll compressor of the first mode of execution of the present utility model;
Fig. 5 is the explanatory view of the size relationship relevant to the radial seal gap of sealing configuration shown in Fig. 4;
Fig. 6 A to Fig. 6 B shows sealing configuration in Fig. 4 determining partial sectional view when scroll element is in non-offloaded state and unloaded state respectively;
Fig. 7 is the partial sectional view of the sealing configuration of the scroll compressor of the second mode of execution of the present utility model;
Fig. 8 is the enlarged partial sectional view of the sealing configuration in Fig. 7.
Embodiment
Be only exemplary to the description of each mode of execution of the utility model below, and be never the restriction to the utility model and application or usage.Adopt identical reference character to represent identical parts in various figures, therefore the structure of same parts is by no longer repeated description.
First total structure and the running principle of conventional scroll compressor are described with reference to Fig. 1.As shown in Figure 1, scroll compressor 100 (hereinafter sometimes also can be called compressor) generally comprises housing 110.Housing 110 can comprise general cylindrical shape body 111, be arranged on the top cover 112 of body 111 one end and be arranged on the bottom 114 of body 111 the other end.Compressor 100 comprises the compressing mechanism be arranged in housing 110, this compressing mechanism compression working fluid and comprise and determine scroll element 150 and dynamic scroll element 160.Compressor 100 also comprises dividing plate 116, dividing plate 116 to be arranged in housing 110 and contiguously to determine scroll element 150, such as, dividing plate 116 to be arranged between top cover 112 and body 111 (in FIG for extending along approximate horizontal direction) the inner space of compressor to be separated into region, high pressure side and low voltage side region (the two is also referred to as the first pressure span or the 3rd pressure span).Being provided with the air input joint 118 for sucking fluid (also referred to as working fluid), such as gaseous refrigerant in low voltage side region, being provided with the exhaust joint 119 for the fluid after discharging compression in region, high pressure side.The motor 120 be made up of stator 122 and rotor 124 is provided with in housing 110.Be provided with live axle 130 in rotor 124 to drive dynamic scroll element 160, thus compress the working fluid determined between scroll element 150 and dynamic scroll element 160.Dynamic scroll element 160 comprises end plate 164, is formed in the hub portion 162 of end plate 164 side and is formed in the spiral helicine blade 166 of end plate 164 opposite side.Determine scroll element 150 to comprise end plate 154, be formed in the spiral helicine blade 156 of end plate 154 side and be formed in the recess 158 of end plate 154 opposite side.Relief opening 152 is formed in the substantial middle position of end plate 154.Space around relief opening 152 also forms region, high pressure side.Compression chamber from radial outside to radially inner side C1, C2 and C3 of determining to be formed between the helical blade 156 of scroll element 150 and the helical blade 166 of dynamic scroll element 160 a series of volume and reducing gradually from.Wherein, the compression chamber C1 of outermost radial outside is the low-pressure cavity being in pressure of inspiration(Pi), and the compression chamber C3 of radial inner side is the hyperbaric chamber being in exhaust pressure.Middle compression chamber C2 is between pressure of inspiration(Pi) and exhaust pressure, thus is also referred to as middle pressure chamber.Thus, three kinds of different pressure chambers are defined in the inside of compressing mechanism: low-pressure cavity, middle pressure chamber and hyperbaric chamber.
The side of dynamic scroll element 160 is supported by the top (i.e. supporting portion) of main bearing seat 140, and one end of live axle 130 is supported by the main bearing 144 be arranged in main bearing seat 140.Described one end of live axle 130 is provided with eccentric crank pin 132, is provided with and unloads lining 142 between eccentric crank pin 132 and the hub portion 162 of dynamic scroll element 160.By the driving of motor 120, dynamic scroll element 160 will relative to determining scroll element 150 translation rotation (namely, the central axis of dynamic scroll element 160 rotates around the central axis determining scroll element 150, but dynamic scroll element 160 itself can not rotate around the central axis of self) to realize the compression of fluid.Above-mentioned translation rotation is that the cross slip-ring 180 by determining to arrange between scroll element 150 and dynamic scroll element 160 realizes.Fluid after determining scroll element 150 and dynamic scroll element 160 compression is discharged to region, high pressure side by relief opening 152.In order to prevent the fluid in region, high pressure side to be back to low voltage side region via relief opening 152 under specific circumstances, one-way valve or outlet valve (not shown) can be set at relief opening 152 place.
In order to realize the compression of fluid, determining between the top (distal portion also referred to as determining scroll element) of the helical blade 156 of scroll element 150 and the end plate 164 of dynamic scroll element 160 and needing axial seal between the top (distal portion also referred to as dynamic scroll element) of the helical blade 166 of dynamic scroll element 160 and the end plate 154 determining scroll element 150.In addition, dividing plate 116 and determine also to need between scroll element 150 to seal.For this reason, usually sealing configuration S is set in the recess determining scroll element 150.
Present composition graphs 2 describes the sealing configuration S of existing compressor in detail, and sealing configuration S is arranged on dividing plate 116 and determines between scroll element 150.Sealing configuration S comprises outer seal member S1, outer spring S2, interior sealing component S3 and inner spring S4.When sealing configuration S is arranged in scroll compressor 100, determining to define between the top of scroll element 150 and the bottom of dividing plate 116 three different pressure spans: low voltage side region LA, medium voltage side region MA and region, high pressure side HA.Wherein, low voltage side region LA is formed by the space formed between the housing 110 below dividing plate 116 and compressing mechanism, form region, high pressure side HA by the space of determining to be formed between the exhaust port being communicated to exhaust joint 119 at scroll element 150 top and dividing plate 116, and form medium voltage side region MA by the space formed between the recess 158 on the top of determining scroll element 150 and the bottom of dividing plate 116.It will be appreciated by persons skilled in the art that and provide an object of medium voltage side region MA to be to provide back pressure to determining scroll element 150.Because the side of dynamic scroll element 160 is supported by the supporting portion of main bearing seat 140, so utilize the pressure in the MA of medium voltage side region effectively can will determine scroll element 150 and dynamic scroll element 160 forces together, this state can be called the non-offloaded state of determining scroll element 150.When the pressure in each compression chamber exceedes setting value, the pressure in these compression chambers produces will exceed the downforce provided in the MA of medium voltage side region thus make to determine scroll element 150 with joint efforts moves upward.Now, fluid in compression chamber by the clearance leakage between the top of the helical blade 166 of the gap between the top of helical blade 156 by determining scroll element 150 and the end plate 164 of dynamic scroll element 160 and dynamic scroll element 160 and the end plate 154 determining scroll element 150 to low voltage side region to realize unloading, thus providing axial elasticity (also referred to as POP OFF) for scroll compressor, this state is also referred to as the unloaded state determining scroll element 150.
For sealing configuration S, the axial displacement of outer seal member S1 and interior sealing component S3 is subject to the restriction of dividing plate 116.Axial certain upper punch distance (also referred to as POP OFF distance) that moved up of scroll element 150 is determined in the process that this axial elasticity is provided, hereinafter referred to as distance POP, therefore, when compressor 100 normally runs (, when determining scroll element 150 and being in non-offloaded state), need to leave with the top of determining scroll element 150 the certain interval C being at least more than or equal to this distance POP at the dividing plate 116 of compressor 100, to prevent from determining in the process providing this axial elasticity when scroll element 150 axially moves up and end plate 116 interferes, in other words, if clearance C reserved between dividing plate 116 and the top of determining scroll element 150 is less than above-mentioned distance POP, then in the process that this axial elasticity is provided (namely, when determining scroll element 150 and being in unloaded state) determine some parts that the normal operation collided with dividing plate 116 and then affect compressor 100 is even damaged compressor 100 by scroll element 150.In the running of compressor 100, this preset clearance C is sealed by outer seal member S1 and interior sealing component S3.
Size relationship relevant to preset clearance C (axial seal gap) in compressor is described in detail with reference to Fig. 3, in the manufacture and assembling process of compressor 100, there is following foozle: the foozle that the upper-end surface of determining the top of scroll element 150 exists in the fabrication process apart from the distance of determining between scroll element 150 lower end surface, the axial height of namely determining scroll element 150, it is in figure 3 by Tor
1represent; The error existed in the fabrication process with the distance between the lower end surface coordinated with the thrust surfaces of main bearing seat 140 of determine upper-end surface distance that scroll element 150 lower end surface coordinates and moving scroll element 160 of dynamic scroll element 160, it is in figure 3 by Tor
2represent; The foozle that distance, the i.e. axial height of body 111 bottom the upper-end surface contacted with the dividing plate 116 distance body 111 of body 111 exist in the fabrication process, it is in figure 3 by Tor
3represent; The error that distance between the end face that the lower surface contacted with sealing component of dividing plate 116 contacts with body 111 apart from dividing plate 116 exists in the fabrication process, it is in figure 3 by Tor
4represent.
In addition, in the assembling and running of compressor 100, dividing plate 116 can produce size error because of welding deformation in the process being assembled into housing 110, and it is in figure 3 by Tor
5represent, and dividing plate also can deform because of the pressure change produced in compressor 100 running thus produce size error, and it is in figure 3 by Tor
6represent, these all can cause the distance of determining between the top of scroll element 150 and dividing plate 116 to change.
Size error, the i.e. Tor of the above-mentioned distortion generation of the error that the multiple parts in compressor 100 exist in the fabrication process and dividing plate 116
1~ Tor
6make must consider these size errors when setting preset clearance C, these size errors are Tor
1~ Tor
6the tolerance range sum of composition.In addition, this preset clearance C also at least must be more than or equal to distance POP.
Therefore, in order to ensure sealing component, preset clearance C is sealed completely, the minimum thickness T of sealing component
minthe maximal clearance C of preset clearance C must be greater than
max, otherwise, be easy to be extruded or eject under the pressure effect of sealing component in middle pressure chamber MA or hyperbaric chamber HA.In addition, the minimum clearance C of preset clearance C
minthe ultimate range POP of distance POP must be greater than
max, otherwise in the process providing axial elasticity, determine scroll element 150 will collide with dividing plate 116.Wherein, the maximal clearance C of preset clearance C
maxequal the minimum clearance C of preset clearance C
minadd Tor
1~ Tor
6the summation of the tolerance range sum formation of composition.That is, when designing sealing component, the minimum thickness T of sealing component must be made
minbe greater than ultimate range POP
maxadd Tor
1~ Tor
6the summation of the tolerance range sum formation of composition.
But, determine when providing axial elasticity distance POP that scroll element 150 axially moves up larger, such as, when the compressor of particular type needs larger POP distance, due to the minimum thickness T of sealing component
minwith ultimate range POP
maxand Tor
1~ Tor
6relation between the tolerance range of composition, the thickness of sealing component can be caused excessive, the thickness of sealing component is excessive, can affect sealability, such as, sealing component thickness is excessive, needs great pressing force the edge of sealing component be pressed against dividing plate and determine on scroll element, and the pressure in medium voltage side region is not when reaching this pressing force, pressure even in region, high pressure side can cause the edge of sealing component can not be close proximity to dividing plate and determine scroll element when also not reaching this pressing force, this so compressed fluid can be caused from the ovfl of sealing component thus affect sealability.Therefore, above-mentioned distance POP is greatly received for the design of suitable thickness sealing component and by Tor
1~ Tor
6the restriction of the tolerance range of composition.
For the scroll compressor of a certain type, distance POP normally fixes, and therefore, if wish that the thickness of sealing component is as far as possible thinner, then must reduce by Tor
1~ Tor
6the impact that the tolerance range formed causes, in other words, the each error forming tolerance range must be reduced, namely, must improve the accuracy of manufacturing of parts and the assembly precisions of these parts such as determining scroll element, dividing plate and housing, and this also has higher requirement and challenges to the manufacture cost of scroll compressor and assembling thereof.
Describe the sealing configuration S100 of the scroll compressor of the first mode of execution of the present utility model referring now to Fig. 4 to Fig. 6 B, and compare the sealing configuration S100 of the first mode of execution and the sealing configuration S of prior art with reference to Fig. 5.
Fig. 4 shows the partial sectional view of the sealing configuration of the scroll compressor of the first mode of execution of the present utility model, Fig. 5 shows the explanatory view of the size relationship relevant to the radial seal gap of sealing configuration shown in Fig. 4, and Fig. 6 A to Fig. 6 B shows sealing configuration in Fig. 4 determining partial sectional view when scroll element is in non-offloaded state and unloaded state respectively.
With reference to Fig. 4, the sealing configuration S100 of scroll compressor comprises the first sealing component S110, this first sealing component S110 can be such as exterior seal ring S110 in the present embodiment, the first extension part S111 of exterior seal ring S110 is configured to lower end surface against the first boss 1161 on the lower surface of dividing plate 116 to realize sealing, the second extension part S112 of exterior seal ring S110 is configured to the annular wall 157 against the first recess 158 determining scroll element 150, in the present embodiment such as can against the circumferential inner surface of annular wall 157 to realize sealing, thus first pressure span with different pressures in scroll compressor and the second pressure span are separated.In the present embodiment, the first pressure span and the second pressure span such as can be respectively but be not limited to low voltage side region LA and medium voltage side region MA.Sealing configuration S100 also comprises the first resilient member S120, and the first resilient member S120 is arranged in the first recess 158, to be kept being pressed against on the first boss 1161 by the first sealing component S110.Determine scroll element 150 to change in non-offloaded state and unloaded state, when determining scroll element 150 and being in non-offloaded state, first boss 1161 keeps being pressed against the first sealing component S110 and the first sealing component S110 can not be extruded by the pressure in the second pressure span MA or eject, as shown in Fig. 4 and Fig. 6 A.When determining scroll element 150 and being in unloaded state, the first boss 1161 keeps being pressed against the first sealing component S110 and the lower end surface of the first boss 1161 is at least in the first recess 158, as shown in Figure 6B.Wherein, scroll element 150 is determined when unloaded state relative to the distance POP that in axial direction moved up in non-offloaded state, as shown in Figure 6B.It is to be noted, although the lower surface determining the upper-end surface of the annular wall 157 of scroll element 150 and the described upper-end surface in the face of annular wall 157 of end plate 116 is in fig. 6b spaced apart, as long as this distance can not contact this lower surface of end plate 116 close to the upper-end surface of zero annular wall 157.
In the first embodiment, by this layout of sealing configuration S100, make to need the gap being undertaken sealing by sealing component to be converted to radial clearance Cr by the axial clearance C of prior art, as shown in Figure 5, need this radial clearance Cr of carrying out sealing be the first boss 1161 outer radial periphery face and determine scroll element 150 the first recess 158 radial inner peripheral surface between radial clearance.And the setting of this radial clearance Cr is no longer subject to impact and the restriction of determining the distance POP that scroll element 150 axially moves up when providing axial elasticity, this is because can by regulating the height of the first boss to eliminate impact and the restriction of distance POP, and the height of the first boss affect and limit the thickness of sealing component.Like this, can the thickness of sealing component be set as thin as far as possible thus better sealing effect is provided, in addition, this sealing configuration can also be arranged on to be had in the larger scroll compressor of distance POP, thus guarantees that the scroll compressor that distance POP is larger can obtain better sealing effect.
In the manufacture of scroll compressor with this sealing configuration S100 and assembling process, need to consider following manufacture and assembly error: the foozle Tor of distance, the i.e. radius of dividing plate 116 at the center of the outer radial periphery identity distance dividing plate 116 of dividing plate 116
1r; Determine the distance of center relative to the center of dividing plate 116 of scroll element 150, i.e. assembly error Tor therebetween
2r; The inner radial surface distance of determining the annular wall 157 of the first recess 158 of scroll element 150 determines the foozle Tor of distance, the i.e. radius of the inner radial surface of the first recess 158 at the center of scroll element 150
3r; The foozle Tor of the distance between the outer radial periphery face of the outer radial periphery identity distance dividing plate 116 of the first boss 1161, i.e. the outer radial periphery face of the first boss 1161
4r, as shown in Figure 5.
That is, in the manufacture of scroll compressor with this sealing configuration S100 and assembling process, only need to consider by Tor
1r~ Tor
4rthe tolerance range of composition, and above-mentioned of the prior art there is the scroll compressor of sealing configuration S manufacture and assembling process in need to consider by Tor
1~ Tor
6the tolerance range of composition.Visible, affect relative less with the size ring (tolerance ring) limiting this radial clearance Cr, this contributes to the thickness reducing sealing component further, thus lift-off seal performance better.In addition, this also suitably can reduce accuracy of manufacturing and the assembly precision of scroll compressor while ensureing sealability, thus can reduce the manufacture cost of whole scroll compressor and reduce assembling difficulty.In addition, in the scroll compressor with this sealing configuration S100, not easily eject in the process that sealing component assembles at compressor, thus can effectively prevent sealing component from ejecting in assembly process.
Preferably, the sealing configuration S100 of scroll compressor can also comprise the second sealing component S130, this second sealing component S130 can be such as inner seal ring S130 in the present embodiment, the first extension part S131 of inner seal ring S130 is configured to lower end surface against the second boss 1162 on the lower surface of dividing plate 116 to realize sealing, the second extension part S132 of inner seal ring S130 is configured to the annular wall 159 against determining scroll element 150, in the present embodiment such as can against the circumferential inner surface of annular wall 159 to realize sealing, thus the second pressure span in scroll compressor and the 3rd pressure span are separated, in this embodiment, 3rd pressure span such as can be but be not limited to region, high pressure side HA.Sealing configuration S100 also comprises the second resilient member S140, and the second resilient member S140 is arranged on and determines in the second recess 152 of scroll element 150, to be kept being pressed against on the second boss 1162 by the second sealing component S130.When determining scroll element 150 and being in non-offloaded state, second boss 1162 keeps being pressed against the second sealing component S130 and the second sealing component S130 can not be extruded by the pressure in the 3rd pressure span or eject, when determining scroll element 150 and being in unloaded state, the second boss 1162 keeps being pressed against the second sealing component S130 and the lower end surface of the second boss 1162 is at least in the second recess 152.
In addition, this second recess 152 can be above-mentioned relief opening, but also can be the recess being different from above-mentioned relief opening.
In the present embodiment, the above-mentioned layout of sealing configuration 200 can obtain the advantage identical with the above-mentioned advantage of sealing configuration 100 equally, is therefore not described in detail here.
In addition, can by sealing configuration 100 and a kind of sealing configuration of the prior art, the sealing configuration S (sealing axial clearance) described is such as combined, or, can by sealing configuration 200 and a kind of sealing configuration of the prior art, the sealing configuration S described is such as combined, namely, sealing configuration 100 or sealing configuration 200 are used for seal region, high pressure side HA and medium voltage side region MA, and the sealing configuration S be combined is used for centering pressure side region MA and low voltage side region LA seal, or, sealing configuration 100 or sealing configuration 200 are used for seal low voltage side region LA and medium voltage side region MA, and the sealing configuration S be combined is used for centering pressure side region MA and region, high pressure side HA seal.These schemes present embodiment and prior art are combined are same can obtain the advantage being used alone sealing configuration 100 or sealing configuration 200 and can realizing.But, the above-mentioned layout of sealing configuration 200 is combined with the above-mentioned layout of sealing configuration 100 and can obtains more excellent effect, that is, the optimum sealing effect between region, high pressure side HA, medium voltage side region MA and low voltage side region LA three can be obtained simultaneously, reduce the manufacture cost of compressor to a greater extent and compressor is more easily assembled.
When determining scroll element 150 and being in non-offloaded state, the lower end surface of the first boss 1161 to be in the first recess 158 or substantially flush with the upper-end surface of the annular wall 157 of the first recess 158, and the lower end surface of the second boss 1261 to be in the second recess 258 or substantially flush with the upper-end surface of the annular wall 159 of the second recess 258.
Alternatively, when determining scroll element 150 and being in non-offloaded state, the lower end surface of the first boss 1161 is in the axial direction than the roughly half of the upper-end surface thickness of high first sealing component S110 at the most of the annular wall 157 of the first recess 158, and the lower end surface of the second boss 1261 is in the axial direction than the roughly half of the upper-end surface thickness of high second sealing component S130 at the most of the annular wall 159 of the second recess 258.
The lower end surface of the first boss 1161 and the lower end surface of the second boss 1162 are roughly in same level, and as shown in Figure 4, but the lower end surface of the lower end surface of the first boss 1161 and the second boss 1162 also can be on the horizontal plane of different heights respectively.Or the upper-end surface of the upper-end surface of the annular wall 157 of the first recess 158 and the annular wall 159 of the second recess 152 also can roughly be in same level, as shown in Figure 4.Alternatively, the lower end surface of the first boss 1161 and the lower end surface of the second boss 1162 are roughly in same level and the upper-end surface of the annular wall 159 of the upper-end surface of the annular wall 159 of the first recess 158 and the second recess 152 and are also roughly in same level.
The upper-end surface of the annular wall 157 of the first recess 158 is designed to make to determine scroll element 150 when determining scroll element 150 and being in unloaded state apart from the distance of the lower surface facing with the upper-end surface of the annular wall 157 of the first recess 158 of dividing plate 116 in the axial direction and does not contact with dividing plate 116.
The upper-end surface of the annular wall 159 of the second recess 152 is designed to make to determine scroll element 150 when determining scroll element 150 and being in unloaded state apart from the distance of the lower surface facing with the upper-end surface of the annular wall 159 of the second recess 152 of dividing plate 116 in the axial direction and does not contact with dividing plate 116.
By this layout, can make to determine scroll element 150 when determining scroll element 150 and being in unloaded state and do not collide with dividing plate 116 or interfere, thus the parts of protection scroll compressor are not damaged.
In addition, the first extension part S111 of the first sealing component S110 and the second extension part S112 is integrally formed and the first sealing component S110 has the cross section of roughly L shape, can be formed and be greater than 90 ° but the angle being less than 180 ° between the first extension part S111 and the second extension part S112.The outer radial periphery face of the first boss 1161 of dividing plate 116 and determine scroll element 150 the first recess 158 annular wall 157 radial inner peripheral surface between radial distance be less than or equal to the thickness of the first sealing component S110, as schematically shown in the diagram.
In addition, the first extension part S131 of the second sealing component S130 and the second extension part S132 is integrally formed and the second sealing component S130 has the cross section of roughly L shape, can be formed and be greater than 90 ° but the angle being less than 180 ° between the first extension part S131 and the second extension part S132.The outer radial periphery face of the second boss 1261 of dividing plate 116 and determine scroll element 150 the second recess 258 annular wall 159 radial inner peripheral surface between radial distance be less than or equal to the thickness of the second sealing component S130.
In addition, the first resilient member S120 can be helical spring, and helical spring S120 provides axial compression load to the first sealing component S110.Second resilient member S140 also can be helical spring, and helical spring S140 provides axial compression load to the second sealing component S130.But the first resilient member S120 and the second resilient member S140 is not limited to helical spring, as long as the first sealing component S110 or the second sealing component S130 can keep being pressed against on the first boss 1161 or the second boss 1261 by it.
The sealing configuration S200 of the scroll compressor of the second mode of execution of the present utility model is described referring now to Fig. 7 and Fig. 8.Fig. 7 is the partial sectional view of the sealing configuration of the scroll compressor of the second mode of execution of the present utility model, and Fig. 8 is the enlarged partial sectional view of the sealing configuration in Fig. 7.
The difference of the second mode of execution and the first mode of execution is the boss configuration of dividing plate and determines the configuration of recess of scroll element, thus in this second embodiment, these differences will be described emphatically, and omit the description to these parts identical with parts in the first mode of execution.
In the sealing configuration S200 of the scroll compressor of the second mode of execution, the outer radial periphery face of the first boss 2161 of dividing plate 216 and the radial inner peripheral surface, such as almost parallel with the radial inner peripheral surface of the annular wall 257 of the first recess 258 of the first recess 258 determining scroll element, as shown in Figure 7.
Preferably, the outer radial periphery face in axial direction downward convergent of the first boss 2161, and the outer radial periphery face of the first boss 2161 relative to the first boss 2161 lower end surface residing for plane form the first angle [alpha], the first angle [alpha] is equal to or less than 90 °, as shown in Figure 8.When the first angle [alpha] equals 90 °, the first boss 2161 and the first recess 258 become the first boss 1161 and the first recess 158 in the first mode of execution.
The outer radial periphery face of the first boss 2161 of dividing plate 216 and determine the radial inner peripheral surface of the first recess 258 of scroll element, thickness that the radial distance such as and between the radial inner peripheral surface of the annular wall 257 of the first recess 258 is less than or equal to the first sealing component S110.
Similarly, the outer radial periphery face of second boss 2161 of the sealing configuration S200 of scroll compressor and the radial inner peripheral surface, such as almost parallel with the radial inner peripheral surface of the annular wall 259 of the second recess 252 of the second recess 252 determining scroll element, as shown in Figure 7.
Preferably, the outer radial periphery face in axial direction downward convergent of the second boss 2162, and the outer radial periphery face of the second boss 2162 relative to the second boss 2162 lower end surface residing for plane form the second angle, the second angle is equal to or less than 90 °, as shown in Figure 7.When the second angle equals 90 °, the second boss 2162 and the second recess 252 become the second boss 1162 and the second recess 152 in the first mode of execution.
The outer radial periphery face of the second boss 2162 of dividing plate 216 and determine the radial inner peripheral surface of the second recess 252 of scroll element, thickness that the radial distance such as and between the radial inner peripheral surface of the annular wall 259 of the first recess 252 is less than or equal to the second sealing component S130.
Although describe numerous embodiments of the present utility model above with reference to Fig. 1-8, it should be appreciated by those skilled in the art that and can make further modification and/or improvement to aspects more of the present utility model.
Although described various mode of execution of the present utility model in detail at this, but should be appreciated that the utility model is not limited to the embodiment described in detail and illustrate here, other modification and variant can be realized when not departing from essence of the present utility model and scope by those skilled in the art.All these modification and variant all fall in scope of the present utility model.And all components described here can be replaced by component equivalent in other technologies.
Claims (15)
1. a scroll compressor (100), is characterized in that, described scroll compressor (100) comprising:
Housing (110);
Be arranged on the compressing mechanism (150,160) in described housing (110), described compressing mechanism (150,160) is suitable for compression working fluid and comprises determining scroll element (150) and dynamic scroll element (160);
Dividing plate (116; 216), described dividing plate (116; 216) to be arranged in described housing (110) and contiguous describedly to determine scroll element (150), at described dividing plate (116; 216) lower surface is provided with the first boss (1161; 2161);
First sealing component (S110), first extension part (S111) of described first sealing component (S110) is configured to against described dividing plate (116; 216) described first boss (1161; 2161) lower end surface and second extension part (S112) of described first sealing component (S110) is configured to against described the first recess (158 determining scroll element (150); 258) annular wall (157; 257) to realize sealing, thus first pressure span with different pressures in described housing (110) and the second pressure span are separated; And
First resilient member (S120), described first resilient member (S120) is arranged on described first recess (158; 258) in, so that the maintenance of described first sealing component (S110), is pressed against described first boss (1161; 2161) on,
Wherein, describedly determine scroll element (150) and can change between non-offloaded state and unloaded state, when described determine scroll element (150) be in described non-offloaded state time, described first boss (1161; 2161) keeping being pressed against described first sealing component (S110) makes described first sealing component (S110) can not be extruded by the pressure in the larger pressure span of pressure in described first pressure span and described second pressure span or eject, when described determine scroll element (150) be in described unloaded state time, described first boss (1161; 2161) keep being pressed against described first sealing component (S110) and described first boss (1161; 2161) described lower end surface is at least in described first recess (158; 258) in.
2. scroll compressor according to claim 1 (100), wherein, at described dividing plate (116; 216) lower surface is also provided with the second boss (1162; , and described scroll compressor (100) also comprises 2162):
Second sealing component (S130), first extension part (S131) of described second sealing component (S130) is configured to against described dividing plate (116; 216) described second boss (1162; 2162) lower end surface and second extension part (S132) of described second sealing component (S130) is configured to against described the second recess (152 determining scroll element (150); 252) annular wall (159; 259) to realize sealing, thus the 3rd pressure span in described second pressure span and described housing (110) is separated, the pressure in wherein said 3rd pressure span is different from the pressure in described first pressure span and described second pressure span; And
Second resilient member (S140), described second resilient member (S140) is arranged on described second recess (152; 252) in, so that the maintenance of described second sealing component (S130), is pressed against described second boss (1162; 2162) on,
Wherein, when described determine scroll element (150) be in described non-offloaded state time, described second boss (1162; 2162) keeping being pressed against described second sealing component (S130) makes described second sealing component (S130) can not be extruded by the pressure in the larger pressure span of pressure in described second pressure span and described 3rd pressure span or eject, when described determine scroll element (150) be in described unloaded state time, described second boss (1162; 2162) keep being pressed against described second sealing component (S130) and described second boss (1162; 2162) described lower end surface is at least in described second recess (152; 252) in.
3. scroll compressor according to claim 2 (100), wherein, described first boss (1161; 2161) and described second boss (1162; 2162) mode being positioned at the radially inner side of another one with one is arranged, or described first sealing component (S110) and described second sealing component (S130) are positioned at the radially inner side of another one mode with one is arranged.
4. scroll compressor according to claim 1 (100), wherein, when described determine scroll element (150) be in described non-offloaded state time, described first boss (1161; 2161) described lower end surface is in described first recess (158; 258) in or with described first recess (158; 258) described annular wall (157; 257) upper-end surface is substantially flush.
5. scroll compressor according to claim 1 (100), wherein, when described determine scroll element (150) be in described non-offloaded state time, described first boss (1161; 2161) described lower end surface is in the axial direction than described first recess (158; 258) described annular wall (157; 257) the roughly half of the upper-end surface thickness of high described first sealing component (S110) at the most.
6. scroll compressor according to claim 2 (100), wherein, described second boss (1162; 2162) described lower end surface and described first boss (1161; 2161) described lower end surface is roughly in same level and/or described second recess (152; 252) described annular wall (159; 259) upper-end surface and described first recess (158; 258) described annular wall (157; 257) upper-end surface is roughly in same level.
7. scroll compressor according to claim 1 (100), wherein, described first boss (1161; 2161) outer radial periphery face and described first recess (158; 258) described annular wall (157; 257) radial inner peripheral surface is almost parallel.
8. scroll compressor according to claim 7 (100), wherein, described first boss (1161; 2161) described outer radial periphery face is downward convergent in axial direction, and described first boss (1161; 2161) described outer radial periphery face is relative to described first boss (1161; 2161) the plane residing for described lower end surface forms the first angle (α), and described first angle (α) is equal to or less than 90 °.
9. the scroll compressor (100) according to any one in claim 1 to 8, wherein, described first boss (1161; 2161) outer radial periphery face and described first recess (158; 258) radial distance between radial inner peripheral surface is less than or equal to the thickness of described first sealing component (S110).
10. the scroll compressor (100) according to any one in claim 2,3,6, wherein, described second boss (1162; 2162) outer radial periphery face is roughly parallel to described first boss (1161; 2161) outer radial periphery face, and, described second recess (152; 252) described annular wall (159; 259) radial inner peripheral surface is roughly parallel to described first recess (158; 258) described annular wall (157; 257) radial inner peripheral surface.
11. scroll compressors (100) according to any one in claim 2,3,6, wherein, described second boss (1162; 2162) outer radial periphery face and described second recess (152; 252) radial distance between radial inner peripheral surface is less than or equal to the thickness of described second sealing component (S130).
12. scroll compressors (100) according to any one in claim 1 to 8, wherein, described first recess (158; 258) described annular wall (157; 257) upper-end surface is in the axial direction apart from described dividing plate (116; 216) with described first recess (158; 258) described annular wall (157; 257) distance of the lower surface that described upper-end surface is facing is designed to make determine describedly when scroll element (150) is in described unloaded state to determine scroll element (150) and described dividing plate (116 when described; 216) do not contact.
13. scroll compressors (100) according to any one in claim 2,3,6, wherein, described second recess (152; 252) described annular wall (159; 259) upper-end surface is in the axial direction apart from described dividing plate (116; 216) with described second recess (152; 252) described annular wall (159; 259) distance of the lower surface that described upper-end surface is facing is designed to make determine describedly when scroll element (150) is in described unloaded state to determine scroll element (150) and described dividing plate (116 when described; 216) do not contact.
14. scroll compressors (100) according to any one in claim 2,3,6, wherein, described first extension part (S111) of described first sealing component (S110) and described second extension part (S112) are integrally formed and described first sealing component (S110) has the cross section of roughly L shape and/or described first extension part (S131) of described second sealing component (S130) and described second extension part (S132) is integrally formed and described second sealing component (S130) has the cross section of roughly L shape.
15. scroll compressors (100) according to any one in claim 1 to 8, wherein, described first pressure span is corresponding to the low voltage side region be communicated with suction pressure and described second pressure span corresponds to the medium voltage side region be communicated with described dynamic scroll element (140) and the described compression chamber determined in a series of compression chambers formed between scroll element (150), or, described first pressure span is corresponding to the region, high pressure side be communicated with exhaust pressure and described second pressure span corresponds to the medium voltage side region be communicated with described dynamic scroll element (140) and the described compression chamber determined in a series of compression chambers formed between scroll element (150).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520076138.XU CN204610280U (en) | 2015-02-03 | 2015-02-03 | Scroll compressor having a plurality of scroll members |
| PCT/CN2016/073067 WO2016124120A1 (en) | 2015-02-03 | 2016-02-01 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520076138.XU CN204610280U (en) | 2015-02-03 | 2015-02-03 | Scroll compressor having a plurality of scroll members |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204610280U true CN204610280U (en) | 2015-09-02 |
Family
ID=53962849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520076138.XU Withdrawn - After Issue CN204610280U (en) | 2015-02-03 | 2015-02-03 | Scroll compressor having a plurality of scroll members |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204610280U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016124120A1 (en) * | 2015-02-03 | 2016-08-11 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
| CN105986996A (en) * | 2015-02-03 | 2016-10-05 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
| CN112128099A (en) * | 2019-06-25 | 2020-12-25 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
-
2015
- 2015-02-03 CN CN201520076138.XU patent/CN204610280U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016124120A1 (en) * | 2015-02-03 | 2016-08-11 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
| CN105986996A (en) * | 2015-02-03 | 2016-10-05 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
| CN112128099A (en) * | 2019-06-25 | 2020-12-25 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor having a plurality of scroll members |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Hongshan Inventor after: Ge Dawei Inventor before: Li Hongshan |
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| COR | Change of bibliographic data | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150902 Effective date of abandoning: 20181009 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150902 Effective date of abandoning: 20181009 |