CN201206549Y - Scroll compressor - Google Patents
Scroll compressor Download PDFInfo
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- CN201206549Y CN201206549Y CNU2007201753691U CN200720175369U CN201206549Y CN 201206549 Y CN201206549 Y CN 201206549Y CN U2007201753691 U CNU2007201753691 U CN U2007201753691U CN 200720175369 U CN200720175369 U CN 200720175369U CN 201206549 Y CN201206549 Y CN 201206549Y
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Abstract
The utility model relates to a scroll compressor, which comprises a fixed scroll (66), a movable scroll (64) and a cross-shaped slide ring (182). The movable scroll (64) is provided with two key grooves (83) respectively including two flat straight sides (83a, 83d). The first key (190) and the second key (192) of the cross-shaped slide ring (182) are respectively matched with the key grooves of the movable scroll (64). The scroll compressor is characterized in that the key groove (83) comprises at last one root cutting part (3b) which is disposed at the innermost end of the flat straight sides (83a, 83d). By adopting the key groove with the root cutting part, the scroll compressor can simultaneously ensure the enough minimum contact length between the key and the key groove to prevent the over abrasion of the keys and the key grooves.
Description
Technical field
The utility model relates to a kind of scroll compressor.
Background technique
Scroll compressor is a kind of novel positive displacement compressor that grows up the eighties in 20th century, be characterized in that efficient height, volume are little, light weight, noise is low, simple in structure and it is steady etc. to turn round, therefore be widely used in the equipment such as air-conditioning, freezing and air compression.
The compressing mechanism of scroll compressor generally comprises moving vortex and decides vortex.In order to prevent the stop vortex and to decide to produce relative rotation between the vortex, need to use anti-rotation mechanism.Anti-rotation mechanism is generally the cross slip ring that has four keys, pair of keys on the cross slip ring cooperates with a pair of keyway of deciding vortex, front and back slip in keyway during work, and the pair of keys in addition on the cross slip ring cooperates with a pair of keyway of moving vortex, horizontally slips relatively in keyway during work.By the cross slip ring, moving vortex relative movement in deciding vortex realizes the compression of air or refrigeration agent.
Traditionally, for the ease of processing, the key that cooperates with the keyway of moving vortex on the cross slip ring forms rectangle, and the keyway of moving vortex mills out by circular milling cutter, and the inner of keyway is generally semicircle.Under the situation of not considering compressor size, the square key of cross slip ring can cooperate well with the keyway of moving vortex.
Along with the needs of compressor design miniaturization increase day by day, the designer adopts the whole bag of tricks to reduce the volume of compressor.Shown in Figure 1A, in very compact compressor design, because the size restrictions of housing 301 maximum inner diameters, it is little that the maximum radius of moving vortex keyway 320 residing two lugs 330 (one of them only is shown) will be tried one's best, to guarantee the whole motion process occupation space minimum of moving vortex 300.Otherwise the moving residing lug 330 of vortex keyway may interfere with the internal surface of housing 301.
At moving vortex 300 with decide in the relative movement process of vortex, square key 310 on the cross slip ring horizontally slips in the keyway 320 of moving vortex, because the inner of keyway 320 is a semicircle 323, so square key 310 can only slide into semicircular end points 321,322 places to the right farthest.In contrast, in the process that square key 310 slides left relatively, square key 310 may skid off keyway 320, shown in Figure 1B, the upper surface 311 of square key 310 may be too short with the contact length L of keyway upper surface, thereby cause key or keyway excessive wear, even cause losing between key and the keyway desired relative movement.
The model utility content
Therefore, the purpose of this utility model provides a kind of scroll compressor, makes to have enough minimum contact lengths between the keyway of the key of guaranteeing the cross slip ring when reducing the scroll compressor size and moving vortex, thereby has avoided the excessive wear of key or keyway.
This purpose realizes by following a kind of scroll compressor, it comprises decides vortex, moving vortex and cross slip ring, described moving vortex has two keyways that comprise two flat side respectively, first key of described cross slip ring and second key cooperate with the keyway of described moving vortex respectively, described keyway comprises at least one undercut portion, and described undercut portion is positioned at the inner terminal place of the flat side of described keyway.
Preferably, described first key and second key are designed to trapezoidal key, and the base length of trapezoidal key that is in described keyway undercut portion one side is greater than the length of the top margin relative with described base of trapezoidal key.
Preferably, when trapezoidal key slided into the keyway inner terminal, the base of trapezoidal key and the contact length of keyway were more than or equal to 2/3rds of the top margin length of trapezoidal key.
Preferably, when trapezoidal key slides into the keyway inner terminal, the base of trapezoidal key be in length in the undercut portion half smaller or equal to 1/3rd of the top margin length of trapezoidal key.
Preferably, the hypotenuse angulation of the base of trapezoidal key and trapezoidal key is more than or equal to 71.5 °.
Preferably, the hypotenuse angulation of the base of trapezoidal key and trapezoidal key is 75 °.
Alternately, described keyway comprises that two undercut portions and described first key and second key are designed to square key.
Preferably, when square key slided into the keyway inner terminal, the base of square key and the contact length of keyway were more than or equal to the bond distance's of square key 1/2nd.
Preferably, described first key and being designed and sized to of second key make the length on base of the described keyway undercut of being in of described key portion one side greater than the length of the top margin relative with described base of described key.When first key or second key slided into the keyway inner terminal, the base of described key and the contact length of keyway were more than or equal to 2/3rds of the top margin length of described key.When first key or second key slide into the keyway inner terminal, the base of described key be in length in the undercut portion half smaller or equal to 1/3rd of the top margin length of described key.
Preferably, described undercut portion is with respect to the flat side laterally offset of described keyway.Described undercut portion with respect to the laterally offset amount of the flat side of described keyway smaller or equal to 12.7% of width of keyway.
Preferably, described undercut portion is with respect to the flat side depression of described keyway.Described undercut portion with respect to the amount of recess of the flat side of described keyway smaller or equal to 12.7% of width of keyway.
Preferably, the profile of described undercut portion is a circular shape.The bottom of described undercut portion with respect to the height of the flat side of described keyway smaller or equal to 12.7% of width of keyway.
Preferably, the flat side of described keyway described the straight line length of being cut by described undercut portion smaller or equal to 2/3rds of described width of keyway.
Preferably, when square key slided into the keyway inner terminal, the base of square key was in length in the keyway undercut portion smaller or equal to the bond distance's of square key 1/2nd.
Preferably, described keyway and undercut portion process by circular milling cutter.
Preferably, describedly decide vortex and comprise that one extends through the inner radial of its flange and the keyway that radially outer enters induction chamber.Because this keyway is open-minded, can make the cross slip ring with decide one of them key that vortex cooperates and inwardly skid off this keyway, thereby under the situation that does not influence cross slip ring displacement distance, can minimize the size of the lug that keyway is set, that is can make more miniaturization of scroll compressor.
Owing to adopted the keyway that has undercut portion, under the situation that reduces moving vortex diameter, guaranteed to have enough minimum contact lengths between key and the keyway simultaneously, thereby avoided the excessive wear of key or keyway.In processing during keyway, can process the undercut portion of keyway by a small amount of lateral movement of milling cutter, thereby easy to process, cost is also lower.
Description of drawings
By following description with reference to accompanying drawing, above-mentioned and further feature of the present utility model and advantage will become easier to understand, wherein:
Cooperating between the square key that Figure 1A and Figure 1B show the cross slip ring in the scroll compressor of prior art and the keyway of moving vortex;
Fig. 2 is the sectional view according to the scroll compressor of the utility model first mode of execution;
Fig. 3 is the face upwarding stereogram of deciding vortex of scroll compressor shown in Figure 2;
Fig. 4 is the stereogram of the compressing mechanism of scroll compressor shown in Figure 2;
Fig. 5 is the exploded perspective view of compressing mechanism shown in Figure 4;
Fig. 6 A, 6B, 6C are respectively planimetric map, partial enlarged drawing and the stereograms of cross slip ring of the scroll compressor of the utility model first mode of execution;
Fig. 7 is the local enlarged diagram of monolateral undercut keyway of moving vortex of the scroll compressor of the utility model first mode of execution;
Fig. 8 A-8D is moving vortex according to the first mode of execution trapezoidal key in an operation cycle and the schematic representation of the relative position relation of monolateral undercut keyway;
Fig. 9 A-9D is moving vortex according to second mode of execution square key in an operation cycle and the schematic representation of the position relation of bilateral undercut keyway;
Figure 10 shows the processing method of the monolateral undercut keyway of the utility model first mode of execution;
Figure 11 shows the processing method of the bilateral undercut keyway of the utility model second mode of execution;
Figure 12 schematically shows the size relationship of trapezoidal key and keyway and undercut;
Figure 13 schematically shows the size relationship of square key and keyway and undercut.
Embodiment
The scroll compressor of the utility model first mode of execution is at first described with reference to Fig. 2-5.
As shown in Figure 2, scroll compressor 10 comprises columnar seal casinghousing 12, compressing mechanism 14, black box 15, main bearing shell 16, keeps assembly 17, motor sub-assembly 18, refrigeration agent to discharge link 20, discharge valve assembly 21 and intakeport link 22.Seal casinghousing 12 holds compressing mechanism 14, main bearing shell 16 and motor sub-assembly 18.Housing 12 comprises the next door 26 of the end cap 24 that is positioned at its top, horizontal expansion and is positioned at the pedestal 28 of its bottom.The next door 26 of end cap 24 and horizontal expansion defines exhaust silencer 30 together.Refrigeration agent is discharged link 20 and is attached on the housing 12 at opening 32 places of end cap 24.Intakeport link 22 is attached on the housing 12 at opening 34 places.Compressing mechanism 14 drives by motor sub-assembly 18 and is supported by main bearing shell 16.Main bearing shell 16 can be connected to housing 12 at a plurality of somes place by any desired mode, for example by riveted joint.
Live axle 40 comprises eccentric crank pin 42 and the upper and lower counterweight 46,48 with plane 44.Live axle 40 is included in the clutch shaft bearing 52 of main bearing shell 16 rotatably supported first collar 50 and rotatably supported second collar 54 in second bearing 56 of lower bearing shell 58.Live axle 40 can comprise concentric pump oilhole 60 in its lower end.Pump oilhole 60 tilts with radially outward and diameter relative littler hole 62 connections with one heart, and hole 62 extends to the upper end of live axle 40.But the inside packing lubrication oil of housing 12 bottoms.Pump oilhole 60 can provide pump action with hole 62 with one heart, lubricant oil is transported to the various piece of scroll compressor 10.
With reference to Fig. 3, decide vortex 66 and comprise end plate 80, have vortex volume 82 at the lower surface of this end plate.Vortex volume 82 can mesh with the vortex volume 70 of moving vortex 64, thereby forms induction chamber 84, medial compartment 86,88,90,92 and exhaust chamber 94.Decide vortex 66 and can carry out a spot of moving axially with respect to main bearing shell 16, housing 12 and moving vortex 64.Decide vortex 66 and comprise shell 67 around vortex volume 82.
Shell 67 comprises the flange 85 that extends radially outwardly, and it defines the protuberance that extends radially outwardly and decides the axial displacement of vortex 66 with respect to main bearing shell 16 to limit.Flange 85 is positioned at the end away from end plate 80 of shell 67, and comprises a series of independent lugs that extend radially outwardly from it 87,89,91.Lug 87,89 generally extends along opposite directions, and lug 91 is along circumferentially being arranged between the lug 87,89.Comprise keyway 93,95 and recess 97 in the lug 87,89,91, recess 97 is used for anti-fastening vortex 66 with respect to main bearing shell 16 rotations.Keyway 95 radially extends through the inner radial of flange 85 and outside and enter induction chamber 84.Because this keyway 95 is open-minded, can make the quadruple linkage 196 of cross slip ring inwardly skid off this keyway when scroll compressor moves, thereby the size that the lug 89 of keyway 95 is set can be fabricated to minimum, and not influence the displacement distance of cross slip ring.
Decide vortex 66 and comprise discharge route 96 that is communicated with exhaust chamber 94 and the recess 98 that is open upwards, described recess 98 can be communicated with exhaust silencer 30 via the opening in the next door 26 100.Discharge route 96 can be with respect to the off-centring of recess 98.
Decide the surperficial annular recess 106 that includes parallel coaxial madial wall 108 and outer side wall 110 qualifications of vortex 66 thereon.Annular recess 106 can be to be decided vortex 66 axialy offset with respect to moving vortex 64 is provided.More specifically, the passage 112 extensible end plates 80 of deciding vortex 66 that pass that are in the recess 106 are communicated with medial compartment 90.Although passage shown in the figure 112 extends to medial compartment 90, it should be understood that passage 112 alternately can be communicated with in other medial compartment 86,88,92 any one.
Referring now to Fig. 4 and Fig. 5, move vortex 64 and decide vortex 66 roughly by main bearing shell 16 supports.Main bearing shell 16 comprises the main body portion 162 that radially extends, and it defines bearing thrust face 74 and has axial from it upwardly extending arm 164,166,168,170.More specifically, arm 164,166,168 and 170 can axially extend up to the midpoint at least of one of them vortex volume 70,82.Each arm 164,166,168,170 comprises the tapped hole 172,174,176,178 that extends axially in its upper surface.Additional holes 180 extends axially in the main body portion 162 near arm 164.Hole 172,174,176,178,180 provides the mounting point for each member that keeps assembly 17.
Keep assembly 17 to comprise cross slip ring 182, directed pin 184 and retaining ring 186.Cross slip ring 182 comprises ring 188 and first key 190, second key 192, triple bond 194 and quadruple linkage 196.Triple bond 194 and quadruple linkage 196 comprise first portion 198,200 and second portion 202,204 separately.Cross slip ring 182 is arranged on the main body portion 162 and is adjacent.Cross slip ring 182 can be positioned within arm 164,166,168 and 170.Moving vortex 64 can and can be close to cross slip ring 182 in abutting connection with bearing thrust surface 74 and be provided with.
Directed pin 184 may extend in the hole 180 of the recess 97 of deciding vortex 66 and main bearing shell 16.Directed pin 184 can further limit decides rotatablely moving of vortex 66.More specifically, directed pin 184 can be prevented the rotation of fastening vortex 66 with respect to main bearing shell 16.Directed pin 184 is generally cylindrical parts and is positioned at the hole 180 of main bearing shell 16 and is slidably disposed on the recess 97 of deciding vortex 66.Although directed pin 184 is depicted as individual components, directed pin 184 can be integrally formed on the main bearing shell 16.Because triple bond 194 and quadruple linkage 196 have prevented to decide vortex 66 with respect to the rotatablely moving of cross slip ring 182, so directed pin 184 has also prevented cross slip ring 182 rotatablely moving with respect to main bearing shell 16.
The axial displacement of deciding vortex 66 can be by retaining ring 186 restrictions.Retaining ring 186 comprises the body 206 of general toroidal, and it has a series of holes 208,210,212 and 214 corresponding to the hole 172,174,176,178 in the arm 164,166,168 and 170 of main bearing shell 16.Body 206 comprises first portion 216 and second portion 218.First portion 216 has the hole 208,210,212 and 214 of passing it.Second portion 218 axially stretches out towards the main body portion 162 of main bearing shell 16 from first portion 216.The external diameter of second portion 218 can be less than the external diameter of first portion 216.The external diameter of second portion 218 is slightly smaller than the arm 164,166,168 of main bearing shell 16 and the internal diameter that 170 top 217 limits.
The internal diameter of retaining ring 186 is a bit larger tham the external diameter of the end plate 80 of deciding vortex 66 and less than the external diameter of the flange 85 of deciding vortex 66.Decide vortex 66 and be supported in the main bearing shell 16, thereby flange 85 is axially disposed between the main body portion 162 of retaining ring 186 and main bearing shell 16.The second portion 218 of retaining ring 186 can stretch in the arm 164,166,168 and 170 of main bearing shell 16, and first portion 216 can be in abutting connection with the upper surface of arm 164,166,168 and 170.Second portion 218 can comprise the conical surface so that at assembly process retaining ring 186 is placed on and decides on the vortex 66.Fastening piece 222 can stretch in the hole 208,210,212 and 214 of retaining ring 186 and with the arm 164,166,168 and 170 of main bearing shell 16 in hole 172,174,176,178 thread engagement, thereby retaining ring 186 is fixed to main bearing shell 16.Therefore, the axial displacement of deciding vortex 66 is restricted to the axial clearance between flange 85 and the retaining ring 186.
The keyway 83 of the moving vortex 64 of describing first key 190 of cross slip ring 182 of the utility model first mode of execution and second key 192 now with reference to Fig. 6 A-8D in detail and being mated.
Fig. 6 A is the planimetric map of cross slip ring 182 of the scroll compressor of the utility model first mode of execution; Fig. 6 B is the enlarged view shown in the dotted line circle B of cross slip ring shown in Fig. 6 A; Fig. 6 C is the stereogram of cross slip ring shown in Fig. 6 A.As mentioned above, first key 190 of cross slip ring 182 and second key 192 cooperate with two keyways 83 of moving vortex 64 respectively, and keyway horizontally slips relatively in the course of the work.Shown in Fig. 6 B, first key 190 is configured to trapezoidal, and it comprises base 190a, hypotenuse 190b, top margin 190c and vertical side 190d.Trapezoidal two-part that are divided into by dotted line A that comprise of first key 190, i.e. rectangle part 190A and triangular portions 190B.As shown in Figure 7, the keyway 83 of moving vortex 64 comprises four parts, the first promptly straight limit 83a and the second limit 83d, roughly semicircular segmental arc 83c and the monolateral undercut 83b of portion.With reference to Figure 10, in the process with circular milling cutter M processing keyway 83, milling cutter M at first moves inward along the substantially horizontal among Figure 10 and puts in place, and then vertically carries out moving on a small quantity, thereby forms the keyway 83 that has the monolateral undercut 83b of portion in passing.The degree of depth of undercut is that the vertical movement amount of milling cutter and the concrete size relationship of first key or second key will be described in greater detail below.
In real work, the base 190a of first key 190 contacts with the first limit 83a of keyway 83, the top margin 190c of first key 190 contacts with the second limit 83d of keyway 83, the hypotenuse 190b of first key 190 is segmental arc 83c and the monolateral undercut 83b of portion towards the inside of keyway 83, and the vertical side 190d of first key 190 is towards the outside of keyway 83.
Because first key 190 and second key 192 along the longitudinal shaft symmetry of cross slip ring 182, so will be that example is described in the work cycle of scroll compressor with second key 192 below, move the keyway 83 of vortex 64 and the relative position relation between second key 192.As Fig. 8 A in the work cycle of 8D, second key 192 at first slides in keyway 83 up to the upper right corner of second key 192 with till the monolateral undercut 83b of portion of keyway 83 almost contacts along to the right direction among Fig. 8 A.Owing to be provided with the monolateral undercut 83b of portion, so compare with traditional semicircle keyway, keyway 83 can be second key 192 extra sliding distance is provided, i.e. 1/2nd L1 (seeing Fig. 8 B).Subsequently, second key 192 is along the slide relative highest distance position place that second key 192 can be advanced in arriving Fig. 8 D in keyway 83 of left direction among Fig. 8 C, in this position, the base 192a of second key 192 part skids off keyway 83, thereby the contact length of second key 192 and keyway 83 is L2 (seeing Fig. 8 D).Length L 2 comprises two-part, the contact length L4 that contact length L3 that promptly trapezoidal rectangle part 192A provides and trapezoidal triangular portions 192B provide, i.e. L2=L3+L4.
Thereby, when shortening the length of lug 79 for the diameter that reduces moving vortex 64, owing to be provided with monolateral undercut portion, the distance that horizontally slips that can guarantee first key or second key remains unchanged, owing to be provided with first key or second key of trapezoidal shape, can guarantee that first key or second key and keyway have enough minimum contact lengths, promptly, compare with traditional square key, can provide extra contact length L4 advancing to the trapezoidal key in highest distance position place.Thereby under the situation that reduces the scroll compressor size, prevented the excessive wear of key or keyway, guaranteed simultaneously can not lose desired relative movement between key and the keyway.
Describe according to the cross slip ring of the utility model second mode of execution and the cooperation of moving vortex with reference to Fig. 9 A-9D below.With second mode of execution shown in the similar Fig. 9 A-9D of Fig. 8 A-8D in, similar reference character is represented similar part, the explanation of same section no longer repeats at this.Different with first mode of execution is, in second mode of execution, the key that cooperates with moving vortex of cross slip ring is designed to rectangle, and the inner of the keyway of moving vortex is provided with two undercut portions, promptly forms two-sided undercut.Particularly, shown in Fig. 9 A, second key 192 comprises the first limit 192a ', the second limit 192b ', the 3rd limit 192c ' and the 4th limit 192d '.Shown in Fig. 9 B, keyway 83 ' comprises the first straight limit 83a ' and the second limit 83d ', roughly semicircular segmental arc 83c ' and two 83b1 of undercut portion, and 83b2 '.In passing with reference to Figure 11, in process with circular milling cutter M processing keyway 83 ', milling cutter M at first moves inward along the substantially horizontal among Figure 11 and puts in place, and then vertically D carries out up and down a small amount of moving, thereby forms the keyway 83 ' that has two 83b1 ' of undercut portion and 83b2 '.
In real work, the first limit 192a ' of second key 192 ' contacts with the second limit 83d ' with the first limit 83a ' of keyway 83 ' respectively with the 3rd limit 192c ', the second limit 192b ' of second key 192 ' is towards the inside of keyway 83 ', and the 4th limit 192d ' of second key 192 ' is towards the outside of keyway 83 '.
As Fig. 9 A in the work cycle of 9D, second key 192 ' at first slides in keyway 83 ' up to two 83b1 ' of undercut portion of two end points of the second limit 192b ' of second key 192 ' and keyway 83 ' with till 83b2 ' almost contacts along to the right direction among Fig. 9 A.Owing to be provided with bilateral undercut 83b1 ' of portion and 83b2 ', so compare with traditional semicircle keyway, keyway 83 ' can be second key 192 ' can provide extra sliding distance, i.e. 1/2nd L1.Subsequently, second key 192 ' is along the highest distance position place that second key 192 ' can be advanced in arriving Fig. 9 D of sliding in keyway 83 ' of left direction among Fig. 9 C, in this position, though the first limit 192a ' of second key 192 ' part skids off keyway 83 ', but because two 192b1 ' of undercut portion that are provided with and 192b2 ', make that the bond distance of second key 192 ' is inwardly elongated, thereby compare with the keyway of no undercut portion with traditional square key, under the constant prerequisite of the maximum outside diameter of second key 192 ', second key 192 ' is longer with the contact length of keyway 83 '.So by the size of suitable selection second key 192 ' and the size of 83b1 ' of undercut portion and 83b2 ', can keep second key 192 ' to have enough minimum contact lengths with keyway 83 ', thereby prevented the excessive wear of key or keyway, guaranteed simultaneously can not lose desired relative movement between key and the keyway.
The size relationship of the undercut portion of first key 190 and keyway 83 in the utility model first mode of execution is described referring now to signal Figure 12.As shown in figure 12, the key of first key 190 is wide to be a, and it roughly equates with the width of keyway 83.The bond distance of first key 190 (top margin length) is b, and it preferably equals the width a of first key 190.When first key 190 slided into keyway 83 inner terminals, the contact length d of the base of first key 190 and keyway 83 was preferably designed for more than or equal to 2/3rds of bond distance b.The 83b of undercut portion of keyway 83 is preferably designed for, and when first key 190 slided into keyway 83 inner terminals, the base of first key 190 was in half c of the length among the 83b of undercut portion smaller or equal to 1/3rd of bond distance b.Thereby the angle [alpha] that the hypotenuse of first key 190 and base form is preferably 75 ° more than or equal to 71.5 °.On the other hand, because the 83b of undercut portion is by circular milling cutter formation, so the elongation line of the flat side of 83b of undercut portion and keyway forms a circular arc portion.Satisfying under the condition of above-mentioned preferable case, promptly, when first key 190 slides into keyway 83 inner terminals, the base of first key 190 is in half c of the length among the 83b of undercut portion smaller or equal to 1/3rd of bond distance b, and the height that can derive described circular arc portion is preferably smaller or equal to 12.7% of width of keyway a.
The size of first key 190 ' in the utility model second mode of execution and the undercut portion of keyway 83 ' can similarly design.With reference to Figure 13, the key of first key 190 ' of rectangle is wide to be a, and the bond distance is b, with the contact length of keyway 83 ' be d.When first key 190 ' slided into keyway 83 ' inner terminal, the contact length d of the base of first key 190 ' and keyway 83 ' was preferably designed for and is not less than 1/2nd of bond distance b; The 83b1 ' of undercut portion and the 83b2 ' of keyway 83 ' are preferably designed for, and when first key 190 ' slided into keyway 83 ' inner terminal, the length that the base of first key 190 ' is among 83b1 ' of undercut portion or the 83b2 ' was not more than 1/2nd of bond distance b.On the other hand, because 83b1 ' of undercut portion and 83b2 ' are by circular milling cutter formation, so the elongation line of the flat side of 83b1 ' of undercut portion and 83b2 ' and keyway forms two circular arc portions.Satisfying under the condition of above-mentioned preferable case, promptly, when first key 190 ' slides into keyway 83 ' inner terminal, the length that the base of first key 190 ' is among 83b1 ' of undercut portion or the 83b2 ' is not more than 1/2nd of bond distance b, and the height that can derive described circular arc portion is preferably smaller or equal to 12.7% of width of keyway a.
Below in conjunction with mode of execution the utility model is had been described in detail with reference to accompanying drawing.Although in mode of execution, be described as key 190 trapezoidal, as long as but the base that in fact is in the key of monolateral undercut portion one side be longer than the top margin of key and can realize the effect similar to trapezoidal key, thereby the hypotenuse of key 190 can be designed as different shapes such as straight flange, curved side.Although in each mode of execution, the 83b of undercut portion is described as once milling out with identical milling cutter, and promptly the radius of curvature of undercut portion is identical with the radius of curvature of semicircle segmental arc.But obviously, also can adopt the milling cutter of different size or shape or the undercut portion that other processing method forms different shape, as long as undercut portion is sagging with respect to the straight line at the flat side place of keyway.
Claims (21)
1. a scroll compressor (10), comprise and decide vortex (66), moving vortex (64) and cross slip ring (182), described moving vortex (64) has two keyways (83) that comprise two flat side (83a, 83d) respectively, first key (190) of described cross slip ring (182) and second key (192) cooperate with the keyway (83) of described moving vortex (64) respectively, it is characterized in that described keyway (83) comprises at least one undercut portion (83b), described undercut portion (83b) is positioned at the inner terminal place of the flat side (83a, 83d) of described keyway (83).
2. scroll compressor as claimed in claim 1, wherein said first key (190) and second key (192) are designed to trapezoidal key, and the length on the base of described keyway (83) the undercut portion (83b) that an is in side of trapezoidal key is greater than the length of the top margin relative with described base of trapezoidal key.
3. scroll compressor as claimed in claim 2, wherein when trapezoidal key (190,192) when sliding into keyway (83) inner terminal, the contact length (d) of the base of trapezoidal key and keyway (83) is more than or equal to 2/3rds of the top margin length (b) of trapezoidal key.
4. scroll compressor as claimed in claim 2, wherein when trapezoidal key (190, when 192) sliding into keyway (83) inner terminal, half (c) that the base of trapezoidal key is in the length in the undercut portion (83b) is smaller or equal to 1/3rd of the top margin length (b) of trapezoidal key.
5. scroll compressor as claimed in claim 2, the hypotenuse angulation (α) of the base of wherein trapezoidal key (190,192) and trapezoidal key is more than or equal to 71.5 °.
6. scroll compressor as claimed in claim 2, the hypotenuse angulation (α) of the base of wherein trapezoidal key (190,192) and trapezoidal key is 75 °.
7. scroll compressor as claimed in claim 1, wherein said keyway (83) comprise that two undercut portions (83b1 ', 83b2 ') and described first key (190 ') and second key (192 ') are designed to square key.
8. scroll compressor as claimed in claim 7, wherein when square key (190 ', 192 ') when sliding into keyway (83 ') inner terminal, the contact length of the base of square key and keyway (83 ') is more than or equal to the bond distance's of square key 1/2nd.
9. scroll compressor as claimed in claim 7, wherein when square key (190 ', when 192 ') sliding into keyway (83 ') inner terminal, the base of square key is in length in keyway (83 ') the undercut portion (83b1 ', 83b2 ') smaller or equal to the bond distance's of square key 1/2nd.
10. scroll compressor as claimed in claim 1, wherein said first key (190) and being designed and sized to of second key (192) make the length on base of the described keyway of being in of described key (83) undercut portion (83b) side greater than the length of the top margin relative with described base of described key.
11. scroll compressor as claimed in claim 10, wherein when first key (190) or second key (192) slide into keyway (83) inner terminal, the contact length (d) of the base of described key and keyway (83) is more than or equal to 2/3rds of the top margin length (b) of described key.
12. scroll compressor as claimed in claim 11, wherein when first key (190) or second key (192) slide into keyway (83) inner terminal, half (c) that the base of described key is in the length in the undercut portion (83b) is smaller or equal to 1/3rd of the top margin length (b) of described key.
13. scroll compressor as claimed in claim 1, wherein said undercut portion (83b) is with respect to flat side (83a, the 83d) laterally offset of described keyway (83).
14. scroll compressor as claimed in claim 13, wherein said undercut portion (83b) with respect to the laterally offset amount of the flat side (83a, 83d) of described keyway (83) smaller or equal to 12.7% of width of keyway.
15. scroll compressor as claimed in claim 1, wherein said undercut portion (83b) is with respect to flat side (83a, the 83d) depression of described keyway (83).
16. scroll compressor as claimed in claim 15, wherein said undercut portion (83b) with respect to the amount of recess of the flat side (83a, 83d) of described keyway (83) smaller or equal to 12.7% of width of keyway.
17. scroll compressor as claimed in claim 1, the profile of wherein said undercut portion (83b) is a circular shape.
18. scroll compressor as claimed in claim 17, the bottom of wherein said undercut portion (83b) with respect to the height of the flat side (83a, 83d) of described keyway (83) smaller or equal to 12.7% of width of keyway.
19. as claim 13,15 or 17 each described scroll compressors, the flat side of wherein said keyway (83) (83a, 83d) described the straight line length of being cut by described undercut portion (83b) smaller or equal to 2/3rds of described keyway (83) width.
20. as each described scroll compressor among the claim 1-18, wherein said keyway and undercut portion process by circular milling cutter.
21. scroll compressor as claimed in claim 1 is wherein saidly decided the keyway (95) that vortex (66) comprises that the inner radial that extends through its flange (85) and radially outer enter induction chamber (84).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201753691U CN201206549Y (en) | 2007-09-11 | 2007-09-11 | Scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201753691U CN201206549Y (en) | 2007-09-11 | 2007-09-11 | Scroll compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201206549Y true CN201206549Y (en) | 2009-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201753691U Expired - Lifetime CN201206549Y (en) | 2007-09-11 | 2007-09-11 | Scroll compressor |
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| Country | Link |
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| CN (1) | CN201206549Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012142944A1 (en) | 2011-04-18 | 2012-10-26 | 艾默生环境优化技术(苏州)有限公司 | Rotary compressor and rotation mechanism |
| CN102869887A (en) * | 2011-01-26 | 2013-01-09 | 松下电器产业株式会社 | Scroll compressor |
| CN103075341A (en) * | 2011-10-26 | 2013-05-01 | 艾默生环境优化技术(苏州)有限公司 | Compressor |
| WO2013152705A1 (en) * | 2012-04-11 | 2013-10-17 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
| US9879673B2 (en) | 2012-04-11 | 2018-01-30 | Emerson Climate Technologies (Suzhou) Co., Ltd. | Scroll compressor |
| CN111441941A (en) * | 2019-01-17 | 2020-07-24 | 艾默生环境优化技术(苏州)有限公司 | Fixed scroll component, compression assembly and scroll compressor |
-
2007
- 2007-09-11 CN CNU2007201753691U patent/CN201206549Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869887A (en) * | 2011-01-26 | 2013-01-09 | 松下电器产业株式会社 | Scroll compressor |
| CN102869887B (en) * | 2011-01-26 | 2016-03-09 | 松下知识产权经营株式会社 | Scroll compressor |
| WO2012142944A1 (en) | 2011-04-18 | 2012-10-26 | 艾默生环境优化技术(苏州)有限公司 | Rotary compressor and rotation mechanism |
| US9850900B2 (en) | 2011-04-18 | 2017-12-26 | Emerson Climate Technologies (Suzhou) Co., Ltd. | Rotary compressor and rotation mechanism |
| CN103075341A (en) * | 2011-10-26 | 2013-05-01 | 艾默生环境优化技术(苏州)有限公司 | Compressor |
| CN103075341B (en) * | 2011-10-26 | 2015-10-07 | 艾默生环境优化技术(苏州)有限公司 | Compressor |
| WO2013152705A1 (en) * | 2012-04-11 | 2013-10-17 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
| US9879673B2 (en) | 2012-04-11 | 2018-01-30 | Emerson Climate Technologies (Suzhou) Co., Ltd. | Scroll compressor |
| CN111441941A (en) * | 2019-01-17 | 2020-07-24 | 艾默生环境优化技术(苏州)有限公司 | Fixed scroll component, compression assembly and scroll compressor |
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