CN101395379A - Method for producing compressor, and compressor - Google Patents

Abstract

A compressor where welding between a casing and an inner component or welding between a barrel casing and an end casing has sufficient strength and the welding has low strain achieved by suppressing an influence of heat by welding. A method of producing the compressor (1, 101) has a positioning process and a welding process. The compressor has the casing (10, 11, 111) and the inner component (60, 125) received in the casing. The casing has at its inner surface (11s, 111s) a first section (11a, 11w, 111w), and the inner component has a second section (60a, 61, 125b). The second section faces the first section. The first section and the second section are made to face each other in the positioning process. In the laser welding process, a laser beam is applied to at least a portion of the part where the first section and the second section are faced each other to laser-weld the casing and the inner component together.

Description

The manufacture method of compressor and compressor

Technical field

The present invention relates to the manufacture method of compressor, particularly the manufacture method of the soldered compressor of soldered compressor of shell and inner member and main part shell and end enclosure.

Background technique

In refrigerating plant etc.,, be extensive use of scroll compressor and the such compressor of rotary compressor for refrigeration agent is compressed in the past.

In these compressors, the inner member that utilizes spot welding will be configured in enclosure is fixed on the main body cover.For example, in the compressor of patent documentation 1, the outside from main body cover is engaged by spot welding in a plurality of positions for the bearing of the running shaft of axle supporting motor and main body cover.Particularly, by on main body cover, offering the hole, in this hole, use the weldering underfill material to carry out electric arc welding (TIG welding etc.), thus with bearing fixing on main body cover, and block the hole of on main body cover, offering.

Patent documentation 1: TOHKEMY 2000-104691 communique

Patent documentation 2: Japanese kokai publication hei 09-329082 communique

Patent documentation 3: Japanese kokai publication hei 07-167059 communique

Inner member about the bearing of above-mentioned scroll compressor and the cylinder of rotary compressor etc. needs to guarantee high positional accuracy in compressor.If owing to the positional accuracy that distortion that heat causes becomes the inner member that makes compressor greatly of advancing in when welding worsens, then the wearing and tearing quantitative change of inner member etc. is big, and perhaps the performance of compressor reduces.

But, in being used in recent years to CO ₂(carbon dioxide) refrigeration agent carries out comparing with the serial refrigeration agent of freon (flon) in the past in the compressor for compressing etc., and the pressure in the compressor uprises, therefore, and the tendency that exists the thickness of slab of shell to increase.For example, if the thickness of slab of shell was 3～4mm in the past, then at nearest CO ₂Under the situation of compressor, thickness of slab thickening to the 8～10mm of shell.In having the compressor of this shell, when in the past the method that adopts by electric arc welding fixing internal parts on main body cover, it is excessive to advance heat, is difficult to guarantee the positional accuracy of inner member.On the other hand, also can consider to adopt following method: directly will not require the inner member of high position precision to be welded on the main body cover, but mounting plate is welded on the main body cover, and utilize bolt that inner member is fastened on the mounting plate, but, under the situation of this method of employing, may cause the maximization of cost rising and compressor.

Summary of the invention

Problem of the present invention just is, is provided on the main body cover of compressor and welds inner member, guarantees easily simultaneously the manufacture method of compressor of the positional accuracy of inner member.

The manufacture method of the compressor of the present invention the 1st aspect has positioning process and laser bonding operation.Compressor has shell and the inner member that is accommodated in the shell.Shell has the 1st one.Inner member has the 2nd one.The 2nd one opposed with the 1st one.In positioning process, the 1st one of shell and the 2nd one of inner member are faced.In the laser bonding operation, at least a portion irradiating laser in the face of part to the 1st one and the 2nd one carries out laser bonding to shell and inner member.

In the manufacture method of this compressor, in positioning process, the 1st one of shell and the 2nd one of inner member are faced.Then, in ensuing laser bonding operation, at least a portion irradiating laser in the face of part to the 1st one and the 2nd one carries out laser bonding to shell and inner member.Like this, in the manufacture method of this compressor, use laser bonding, thereby compare, can suppress to weld the heat affecting that causes, the compressor of low distortion can be provided with the situation of using electric arc welding by welding to shell and inner member.Its result guarantees the positional accuracy of inner member easily.

The manufacture method of the compressor of the present invention the 2nd aspect forms, and in the manufacture method of the compressor aspect the 1st, in positioning process, shell and inner member is positioned greater than 0mm and the mode below 0.6mm with the 1st gap with the 2nd one.In the laser bonding operation, do not supply with the weldering underfill material, will not form under the state in hole the 1st one and carry out laser bonding with the 2nd one.

In the manufacture method of this compressor, in positioning process, the 1st the 2nd one gap with the inner member of compressor of the shell of compressor is maintained in greater than 0mm and below 0.6mm.Then, in ensuing laser bonding operation, from the 1st one end face side, be the outside of shell, to the 1st one under the state that in positioning process, is positioned and the 2nd irradiating laser with respect to the 2nd opposition side.Like this, in the manufacture method of this compressor, use laser bonding, thereby compare, can suppress to weld the heat affecting that causes, the compressor of low distortion can be provided with the situation of using electric arc welding by welding to shell and inner member.Its result guarantees the positional accuracy of inner member easily.And, be maintained in greater than 0mm and below 0.6mm by gap, thereby can guarantee the intensity of the welding of shell and inner member fully the 1st one and the 2nd one.

And then, in the manufacture method of this compressor, when the welding of shell and inner member, do not need on the 1st one, to offer the hole in advance, and do not use the weldering underfill material yet.Usually, in electric arc welding, not the such degree of depth penetration of laser bonding, so, if do not offer the hole the 1st one the position that becomes processing stand in advance, then can't weld the 1st one and the 2nd one with full intensity.And then, in electric arc welding, also need to supply with the weldering underfill material.But, in the manufacture method of this compressor, owing to use laser bonding, so, can save the formation in hole and the needed manufacture cost of interpolation of weldering underfill material.

The manufacture method of the compressor of the present invention the 3rd aspect forms, and in the manufacture method of the compressor aspect the 2nd, in positioning process, shell and inner member is positioned greater than 0mm and the mode below 0.2mm with the gap.

In the manufacture method of this compressor, in positioning process, the 1st the 2nd one gap with inner member of shell is maintained in greater than 0mm and below 0.2mm.Thus, in the manufacture method of this compressor, can improve the intensity of the welding of shell and inner member.

The manufacture method of the compressor of the present invention the 4th aspect forms, and aspect the 2nd or in the manufacture method of the compressor of the 3rd aspect, in the laser bonding operation, from observing with the direction of the 1st one and the 2nd quadrature, the fusion position is the shape of open curve.The fusion position be in the 1st one and the 2nd one by laser exposure and the position of fusion.

Describe at the fusion position under the situation of closed curve of circle etc., by the 1st one, the 2nd one and fusion position coming the regulation closed space, heated air in this closed space waits ejection near the terminal point of welded rails owing to its pressure, offer the hole at the fusion position, damage the tightness of compressor sometimes.On the other hand, in the manufacture method of the compressor aspect the 3rd, in welding process, describe the mode irradiating laser of open curve with the fusion position.Thus, in the manufacture method of this compressor, avoid the problems referred to above, can guarantee the tightness of compressor.

The manufacture method of the compressor of the present invention the 5th aspect forms, and in the manufacture method of the compressor aspect the 4th, in the laser bonding operation, from observing with the direction of the 1st one and the 2nd quadrature, the fusion position is a V-shape.

Usually, in laser bonding, little when making its processing stand than electric arc welding, the shape at preferred molten position is not depicted as a little but is depicted line or face as.But, become at the shape profiling at fusion position under the situation of straight line of above-below direction or left and right directions, weld strength is because of the fragilities that become such as vibration of left and right directions or above-below direction, under the situation of the cross that the shape profiling at fusion position becomes to make the straight line of above-below direction and left and right directions to intersect to form, the heat affecting at intersection point place is big, and near the intensity of intersection point is reduced.And, arbitrarily enlarge the fusion position and can increase manufacture cost in vain.Therefore, in the manufacture method of the compressor aspect the 5th, in the laser bonding operation, describe the mode irradiating laser of V word with the fusion position.Under the situation of V-shape, be that whirlpool shape, C word shape, U word shape are compared for example with same closed curve, can suppress welding capacity, can obtain sufficient weld strength simultaneously.Like this, in the manufacture method of this compressor, can guarantee weld strength simply.

The manufacture method of the compressor of the present invention the 6th aspect forms, and in the manufacture method of the compressor aspect the 5th, in the laser bonding operation, the summit of the V word at fusion position is the shape of band fillet.

In the manufacture method of this compressor, in the laser bonding operation, serve as the mode irradiating laser of the shape of band fillet with the summit of the V word at fusion position.Thus, in the manufacture method of this compressor, can avoid the stress at summit place of the V word at fusion position to concentrate.

The manufacture method of the compressor of the present invention the 7th aspect forms, in the manufacture method of the compressor aspect the 1st, in the laser bonding operation,, shell and inner member are carried out laser bonding along the internal surface of shell at least a portion irradiating laser in the face of part to the 1st one and the 2nd one.

Here, unlike in the past, shell and inner member were welded, but fetched the welding of carrying out both by laser beam welding by electric arc welding.

Only from the outside of shell to connect the form irradiating laser of shell, under the big situation of the thickness of slab of shell, if spended time is not guaranteed many heats that advances, then the penetration zone of shell and inner member diminishes.On the other hand, when advancing heat when excessive, be difficult to guarantee the positional accuracy of inner member owing to distortion.

In view of this, aspect the 7th in, with respect to the 1st one of the internal surface of shell with the 2nd one of the 1st inner member that contacts in the face of part, with angle direct irradiation laser along the internal surface of shell.Like this, here, directly the 1st one and the 2nd one's the part irradiating laser of facing is carried out laser welding method by adopting, thereby utilize the fewer heat that advances to increase both penetration zones, guarantee the intensity of anastomosis part from the inboard of shell.

And, directly shell and inner member are welded by laser bonding, so, do not need to clamp in the past intermediary's parts of the mounting plate that uses etc., can realize that cost reduces and the miniaturization of compressor.

In addition, under the identical situation of advancing heat, and from the outside irradiating laser of shell and make it connect the method that shell welds inner member to compare, adopt directly, can improve the intensity of anastomosis part both methods of the present invention in the face of the part irradiating laser.

The manufacture method of the compressor of the present invention the 8th aspect forms, and in the manufacture method of the compressor aspect the 7th, the 1st one thickness of shell is more than the 5mm.

Like this, under the thick situation of shell, when from the outside of shell laser being connected to weld the 1st one of inner surface of outer cover and inner member the 2nd, welding region diminishes, and perhaps, in order to ensure welding region, and inner member is applied a large amount of heat of advancing.

But, here, owing to adopt directly from the inboard of shell the method for facing the part irradiating laser to the 1st one and the 2nd one, so, can utilize and advance heat for a short time and guarantee sufficient welding region.

In addition, the thickness of slab at shell surpasses under the situation of 7mm particular significant effect of the present invention.

The manufacture method of the compressor of the present invention the 9th aspect forms, aspect the 7th or in the manufacture method of the compressor of the 8th aspect, compressor is a scroll compressor, and it has rotating machinery, the bearing that this rotating machinery has rotating machinery and the running shaft of rotating machinery carried out the axle supporting.And inner member is the bearing of rotating machinery.

Here, can guarantee the positional accuracy of core of the running shaft of rotating machinery with comparalive ease.

The manufacture method of the compressor of the present invention the 10th aspect forms, aspect the 7th or in the manufacture method of the compressor of the 8th aspect, compressor is a rotary compressor, and it has compressing mechanism, and this compressing mechanism has cylinder part and blocks the cover of the opening of cylinder part.And inner member is cylinder part or cover.

Here, the component parts that can guarantee compressing mechanism with comparalive ease is the relative positional accuracy of cylinder part or cover etc., the wear extent of each parts of the vibration of compressor and compressing mechanism can be controlled in the scope of predetermined design load.

The manufacture method of the compressor of the present invention the 11st aspect forms, and in the method aspect the 10th, inner member is by semi-molten/partly solidify cylinder part or cover that die casting is shaped.

Here, can use the forming method near net shape to come molded component by semi-molten/partly solidify die casting, the machining processes of cutting etc. seldom gets final product, and weld strength is also than FC material height.

The manufacture method of the compressor of the present invention the 12nd aspect forms, aspect the 10th or in the manufacture method of the compressor of the 11st aspect, compressor also has rotating machinery, and rotating machinery makes eccentric rotor rotated rotation in the space that is formed by cylinder part and cover.Cover comprises: the 1st cover that is positioned at the rotating machinery side of cylinder part; With across cylinder part and opposed the 2nd cover of the 1st cover.Inner member is the 2nd cover.And, in the laser bonding operation, from the opposition side of the residing side of rotating machinery to the 1st one of shell and the 2nd cover the 2nd one in the face of the part irradiating laser.

Here, there is rotating machinery in a side (being viewed as the 1st cover side from cylinder part) at the compressing mechanism with cylinder part, the 1st cover and the 2nd cover, but, carry out laser exposure from opposition side (being viewed as the 2nd cover side) from cylinder part, so rotating machinery hinders the possibility of laser bonding very little.

The manufacture method of the compressor of the present invention the 13rd aspect forms, aspect the 7th～manufacture method of the compressor of either side in the 12nd aspect in, in the laser bonding operation, with respect to the internal surface of shell with the following angular illumination laser of 30 degree.

The manufacture method of the compressor of the present invention the 14th aspect forms, aspect the 7th～manufacture method of the compressor of arbitrary mode in the 13rd aspect in, in the laser bonding operation, to the 1st one and the 2nd one in the face of part, spread all over complete cycle ground irradiating laser.

Here, owing to spread all over complete cycle and carry out laser bonding, so, even with CO ₂Make under the very high situation of internal pressure as using compressor in the Refrigerating Machinery of refrigeration agent, inner member also can come off from shell hardly.

The compressor of the present invention the 15th aspect utilizes the manufacture method of the either side in the 1st aspect～the 14th aspect to make, and carbon dioxide is compressed.

Adopting under the situation of high-pressure refrigerant as refrigeration agent of carbon dioxide etc., in existing shell, can produce bigger pressure distortion, so, need the thicker shell of wall thickness.But, as in the past, by the electric arc welding that forms through hole and use the weldering underfill material via this through hole when the thick shell of this wall thickness tightens inner member, to shell to advance heat more than the situation of existing shell, shell significantly is out of shape.But, aspect the 1st～manufacture method of either side in the 14th aspect in, inner member is fastened on the shell by the high laser beam of energy density.Therefore, even need the compressor of the used for high-pressure refrigerant of the thick shell of wall thickness, when fastening inner member, also can suppress the distortion of shell.

The manufacture method of the compressor of the present invention the 16th aspect comprises positioning process and laser bonding operation.Compressor has shell.Shell has: cylindrical main body portion shell; And airtight shape be welded on the end enclosure of the end of main part shell.In positioning process, main part shell and end enclosure are positioned.In the laser bonding operation, supply with weldering underfill material on one side, the Zhou Fangxiang along the main part shell carries out laser bonding to main part shell and end enclosure on one side.

In the manufacture method of this compressor, in positioning process, the main part shell of compressor and the end enclosure of compressor are positioned.Then, in ensuing laser bonding operation, to main part shell under the state that in positioning process, is positioned and end enclosure irradiating laser.Like this, in the manufacture method of this compressor, use laser bonding, thereby compare, can suppress to weld the heat affecting that causes, the compressor of low distortion can be provided with the situation of using electric arc welding by welding to main part shell and end enclosure.And, when the laser bonding of this main part shell and end enclosure, use the weldering underfill material, so, can guarantee thickness sufficient at the fusion position, can fully guarantee the intensity of the welding of main part shell and end enclosure.

The manufacture method of the compressor of the present invention the 17th aspect forms, and in the manufacture method of the compressor aspect the 16th, in the laser bonding operation, main part shell and end enclosure are by fillet welding.

In the manufacture method of this compressor, main part shell and end enclosure are by fillet welding.Like this, under the situation of using fillet welding, can judge the quality of welding by visual examination.

The manufacture method of the compressor of the present invention the 18th aspect forms, and in the manufacture method of the compressor aspect the 16th, in the laser bonding operation, main part shell and end enclosure are by butt welding.

In the manufacture method of this compressor, main part shell and end enclosure are by butt welding.Like this, under the situation of using butt welding, compare, can further suppress to weld the heat affecting that causes with the situation of using fillet welding.

The compressor of the present invention the 19th aspect utilizes the manufacture method of the either side in the 16th aspect～the 18th aspect to make, and carbon dioxide is compressed.

Adopting under the situation of high-pressure refrigerant as refrigeration agent of carbon dioxide etc., in existing shell, can produce bigger pressure distortion, so, need the thicker shell of wall thickness.But, when fetching thick main part shell of fastening this wall thickness and end enclosure by arc welding, to two shells to advance heat more than the situation of existing shell, shell integral body significantly is out of shape.But, aspect the 16th～manufacture method of either side in the 18th aspect in, the laser beam high by energy density comes fastening main part shell and end enclosure.Therefore, even need the compressor of the used for high-pressure refrigerant of the thick shell of wall thickness, also can suppress the distortion of shell.

In the manufacture method of the compressor aspect the present invention the 1st, use laser bonding, thereby compare, can suppress to weld the heat affecting that causes, the compressor of low distortion can be provided with the situation of using electric arc welding by welding to shell and inner member.Therefore, guarantee the positional accuracy of inner member easily.Its result guarantees the positional accuracy of inner member easily.

In the manufacture method of the compressor aspect the present invention the 2nd, use laser bonding, thereby compare, can suppress to weld the heat affecting that causes, the compressor of low distortion can be provided with the situation of using electric arc welding by welding to shell and inner member.Its result guarantees the positional accuracy of inner member easily.And, be maintained in greater than 0mm and below 0.6mm by the 1st the 2nd one gap, thereby can guarantee the intensity of the welding of shell and inner member fully with inner member with shell.In addition, when the welding of shell and inner member, do not need on the 1st one, to offer the hole in advance, and do not use the weldering underfill material yet, so, manufacture cost can be saved.

In the manufacture method of the compressor aspect the present invention the 3rd, the 1st one of shell and the 2nd one gap of inner member are maintained in greater than 0mm and below 0.2mm, thus, can improve the intensity of the welding of shell and inner member.

In the manufacture method of the compressor aspect the present invention the 4th, in welding process, describe the mode irradiating laser of open curve, thus, can guarantee the tightness of compressor with the fusion position.

In the manufacture method of the compressor aspect the present invention the 5th, in welding process, describe the mode irradiating laser of V word, thus, can guarantee weld strength simply with the fusion position.

In the manufacture method of the compressor aspect the present invention the 6th, in welding process, serve as the mode irradiating laser of the shape of band fillet, thus, can avoid the stress at place, summit of the V word at fusion position to concentrate with the summit of the V word at fusion position.

In the manufacture method of the compressor aspect the present invention the 7th, directly the 1st one and the 2nd one's the part irradiating laser of facing is carried out laser welding method by adopting from the inboard of shell, thereby utilize the fewer heat that advances to increase both penetration zones, guarantee the intensity of anastomosis part.And, owing to directly shell and inner member are welded by laser bonding, so, do not need to clamp intermediary's parts of the mounting plate that in the past used etc., can realize that cost reduces and the miniaturization of compressor.

In the manufacture method of the compressor aspect the present invention the 8th, shell is thick, still, adopts directly from the inboard of shell the method for facing the part irradiating laser to the 1st one and the 2nd one, so, can utilize and advance heat for a short time and guarantee sufficient welding region.

Aspect the present invention the 9th and in the manufacture method of the compressor of the 10th aspect, can guarantee the positional accuracy of core of the running shaft of rotating machinery with comparalive ease.

In the manufacture method of the compressor aspect the present invention the 11st, can use the forming method near net shape to come molded component by semi-molten/partly solidify die casting, the machining processes of cutting etc. seldom gets final product, and weld strength is also than FC material height.

In the manufacture method of the compressor aspect the present invention the 12nd, there is rotating machinery in a side at the compressing mechanism with cylinder part, the 1st cover and the 2nd cover, still, carries out laser exposure from opposition side, so rotating machinery hinders the possibility of laser bonding very little.

In the manufacture method of the compressor aspect the present invention the 13rd, can carry out laser bonding to the 1st one and the 2nd one with wide area.

In the manufacture method of the compressor aspect the present invention the 14th, owing to spread all over complete cycle and carry out laser bonding, so, even with CO ₂Make under the very high situation of internal pressure as using compressor in the Refrigerating Machinery of refrigeration agent, inner member also may come off from shell hardly.

In the compressor aspect the present invention the 15th, can adopt the thick shell of wall thickness that has suppressed distortion.

In the manufacture method of the compressor aspect the present invention the 16th, use laser bonding by welding to main part shell and end enclosure, thereby compare with the situation of using electric arc welding, can suppress to weld the heat affecting that causes, the compressor of low distortion can be provided.And, owing to when the laser bonding of this main part shell and end enclosure, use the weldering underfill material, so, can guarantee thickness sufficient at the fusion position, can fully guarantee the intensity of the welding of main part shell and end enclosure.

In the manufacture method of the compressor aspect the present invention the 17th, main part shell and end enclosure thus, can be judged the quality of welding by visual examination by fillet welding.

In the manufacture method of the compressor aspect the present invention the 18th, main part shell and end enclosure thus, are compared with the situation of using fillet welding by butt welding, can further suppress to weld the heat affecting that causes.

In the compressor aspect the present invention the 19th, can adopt the thick shell of wall thickness that has suppressed distortion.

Description of drawings

Fig. 1 is the longitudinal section of the high low pressure dome compressor of the 1st mode of execution.

Fig. 2 be in the longitudinal section of high low pressure dome compressor of the 1st mode of execution based near the enlarged view the fusion position of the laser bonding of main part shell and bottom main bearing.

Fig. 3 be the 1st mode of execution observe the figure of the welding face of main part shell from the irradiation directions of laser.

Fig. 4 (a) be the 1st mode of execution main part shell and upper wall portions are implemented near the fusion position before the laser bonding longitudinal section.(b) be the 1st mode of execution acceptance weldering underfill material supply and main part shell and upper wall portions are implemented near the fusion position after the laser bonding longitudinal section.(c) be not the accepting to weld the supply of underfill material of prior art and main part shell and upper wall portions are implemented near the fusion position after the laser bonding longitudinal section.

Fig. 5 (a) be the 1st mode of execution variation (H) main part shell and upper wall portions are implemented near the fusion position after the laser bonding longitudinal section.(b) be the 1st mode of execution variation (H) main part shell and upper wall portions are implemented near the fusion position after the laser bonding longitudinal section.(c) be the 1st mode of execution variation (H) main part shell and upper wall portions are implemented near the fusion position before the laser bonding longitudinal section.

Fig. 6 is the enlarged view of the anastomosis part of the bottom main bearing of the 2nd mode of execution and main body cover portion.

Fig. 7 is the longitudinal section of the swing compressor of the 3rd mode of execution.

Fig. 8 is the sectional view along the IV-IV line direction of arrow of the swing compressor of the 3rd mode of execution.

Fig. 9 is the enlarged view of the anastomosis part of the bonnet of swing compressing mechanism of the 3rd mode of execution and main body cover portion.

Symbol description

1: high low pressure dome scroll compressor (compressor); 10: shell; 11,111: main part shell (shell); 11a: welding facial (the 1st one); 11s, 111s: internal surface; 11w, 111w: soldered (the 1st one) of the internal surface of main body cover portion; 12: upper wall portions (end enclosure); 13: bottom wall portion (end enclosure); 16: drive motor (rotating machinery); 17: live axle (running shaft); 60: bottom main bearing (inner member, bearing); 60a: welding facial (the 2nd one); 61: the peripheral part of bottom main bearing (the 2nd one); 70: the fusion position; 101: rotary (swing type) compressor; 115: swing compressing mechanism (compressing mechanism); 116: drive motor (rotating machinery); 121: piston (rotor); 123: protecgulum (the 1st cover); 124: the 1 cylinder block (cylinder part); 125: bonnet (the 2nd cover); 125b: the peripheral part of bonnet (the 2nd one); 126: the 2 cylinder block (cylinder part); 127: intermediate plate (cover).

Embodiment

The 1st mode of execution

The high low pressure dome scroll compressor 1 of the 1st mode of execution of the present invention constitutes refrigerant circuit with vaporizer, condenser and expansion mechanism etc., the effect that performance is compressed the gas refrigerant in this refrigerant circuit, as shown in Figure 1, high low pressure dome scroll compressor 1 mainly is made of shell 10, scroll compression body 15, partition ring (Oldham ring) 39, drive motor 16, bottom main bearing 60, suction pipe 19 and the discharge tube 20 of lengthwise airtight dome cylindraceous.Below, be described in detail the component parts of this high low pressure dome scroll compressor 1 respectively.

The component parts of＜high low pressure dome scroll compressor in detail

(1) shell

Shell 10 has: main part shell 11 roughly cylindraceous; Be welded on the bowl-shape upper wall portions 12 of the upper end portion of main part shell 11 airtight shape; And airtight shape be welded on the bowl-shape bottom wall portion 13 of the underpart of main part shell 11.In addition, main part shell 11 is described in detail in the back with the welding method of upper wall portions 12 and bottom wall portion 13.And, in this shell 10, mainly take in: the scroll compression body 15 that gas refrigerant is compressed; And the drive motor 16 that is configured in the below of scroll compression body 15.This scroll compression body 15 is connected by live axle 17 with drive motor 16, and this live axle 17 is configured in the shell 10 along above-below direction.And its result produces clearance space 18 between scroll compression body 15 and drive motor 16.

(2) scroll compression body

As shown in Figure 1, scroll compression body 15 is mainly by constituting with the bottom: housing 23; The fixed scroll 24 of connecting airtight the top that is configured in housing 23; And with the movable scroll 26 of fixed scroll 24 engagement.Below, be described in detail the component parts of this scroll compression body 15 respectively.

A) housing

Housing 23 mainly constitutes by board 23a with from the 1st periphery wall 23b that the outer circumferential face of board erects setting.And this housing 23 is at its outer circumferential face, is pressed into along the integral body of Zhou Fangxiang and is fixed in main part shell 11.That is, main part shell 11 and housing 23 connect airtight along the airtight shape of complete cycle ground.Therefore, the inside of shell 10 is divided into the high-pressure space 28 of housing 23 belows and the low-voltage space 29 of housing 23 tops.And, in this housing 23, be formed with at the housing recess 31 of the recessed setting of upper face center with below the lower surface mediad and extend the bearing portion 32 that is provided with.And, in this bearing portion 32, be formed with the bearing hole 33 that connects along the vertical direction.Live axle 17 is embedded in this bearing hole 33 freely via bearing 34 rotations.

B) fixed scroll

Fixed scroll 24 is mainly by constituting with the bottom: end plate 24a; The clinch 24b of the swirl shape (involute shape) that extends downwards from end plate 24a; And the 2nd periphery wall 24c that surrounds clinch 24b.In end plate 24a, be formed with drain passageway 41 that is communicated with pressing chamber 40 (aftermentioned) and the expansion recess 42 that is communicated with drain passageway 41.The mode that drain passageway 41 extends with above-below direction is formed on the middle body of end plate 24a.Enlarging recess 42 is following recesses: continuous with tap hole 41, form the space of amplifying than tap hole 41, and be formed on the upper surface of end plate 24a in the mode of widening in the horizontal direction.And, on fixed scroll 24, be fixed with lid 44, to block the top of this expansion recess 42 by bolton.And, by covering lid 44 on expansion recess 42, thereby form the muffler space 45 that the running sound of scroll compression body 15 is carried out noise reduction.Thereby fixed scroll 24 and lid 44 connect airtight sealed via not shown sealing gasket.

C) movable scroll

Movable scroll 26 is mainly by constituting with the bottom: end plate 26a; The clinch 26b of the swirl shape (involute shape) that extends upward from end plate 26a; The 26c of bearing portion that extends to the below of end plate 26a; And the slot part 26d that is formed on the two end part of end plate 26a.And this movable scroll 26 is bearing on the housing 23 by embed partition ring 39 in slot part 26d.And the upper end of live axle 17 embeds among the bearing 26c of portion.Movable scroll 26 is by being assembled into by this way in the scroll compression body 15, from rather than the rotation by the rotation of live axle 17, but housing 23 in, revolve round the sun.And the clinch 26b of movable scroll 26 and the clinch 24b of fixed scroll 24 engagement are formed with pressing chamber 40 between the contacting part of two clinch 24b, 26b.And then the contacting part of two clinch 24b, 26b is followed the revolution of movable scroll 26 and is moved towards the center, so pressing chamber 40 is also followed the revolution of movable scroll 26 and moved towards the center.At this moment, the volume of pressing chamber 40 is along with shrinking towards the center.In the high low pressure dome scroll compressor 1 of the 1st mode of execution, like this gas refrigerant is compressed.

D) other

And, in this scroll compression body 15, cross over fixed scroll 24 and housing 23 and be formed with connecting path 46.This connecting path 46 forms, and makes to be communicated with at the scroll side path 47 of fixed scroll 24 upper cuts formation with at the case side path 48 that housing 23 upper cuts form.And the upper end of connecting path 46 is that the upper end of scroll side path 47 is enlarging recess 42 openings, and the lower end of connecting path 46 is that the lower end of case side path 48 is at the lower end surface of housing 23 opening.That is, the lower ending opening of this case side path 48 becomes the exhaust port 49 that the refrigeration agent that makes connecting path 46 flows out to clearance space 18.

(3) partition ring

As mentioned above, partition ring 39 is the parts that are used to prevent the spinning motion of movable scroll 26, and it is embedded in the cross recess (not shown) that forms on the housing 23.In addition, this cross recess is the groove of elliptical shape, is provided in the housing 23 on the mutual opposed position.

(4) drive motor

In the 1st mode of execution, drive motor 16 is direct current motors, and it is mainly by constituting with the bottom: the stator 51 that is fixed on the ring-type on the internal face of shell 10; And rotate the rotor 52 that is accommodated in stator 51 inboards freely in mode with micro-gap (air gap path).And this drive motor 16 is configured to, and the upper end of coil end 53 that is formed on the upside of stator 51 is positioned at the position with the roughly the same height in lower end of the bearing portion 32 of housing 23.

In stator 51, in tooth portion, be wound with copper cash, be formed with coil end 53 with the below up.And, being provided with the iron core cutting part at the outer circumferential face of stator 51, this iron core cutting part, and separates predetermined interval ground otch and is formed on a plurality of positions up to the lower end surface from the upper-end surface of stator 51 on Zhou Fangxiang.And, by this iron core cutting part, between main part shell 11 and stator 51, be formed with the motor cooling path 55 that extends along the vertical direction.

Rotor 52 is connected with movable scroll 26 drivings of scroll compression body 15 via the live axle 17 that is configured in the axle center of main part shell 11 in the mode of extending along the vertical direction.And the guide plate 58 that the refrigeration agent that will flow out from the exhaust port 49 of connecting path 46 is directed to motor cooling path 55 is provided in the clearance space 18.

(5) bottom main bearing

Bottom main bearing 60 is provided in the lower space of below of drive motor 16.This bottom main bearing 60 is fixed on the main part shell 11, and constitutes the bearing of the lower end side of live axle 17, comes supporting driving shaft 17.In addition, the welding method of main part shell 11 and bottom main bearing 60 is described in detail in the back.

(6) suction pipe

Suction pipe 19 is used for the refrigeration agent of refrigerant circuit is directed in the scroll compression body 15, and airtight shape ground embeds on the upper wall portions 12 of shell 10.Suction pipe 19 connects low-voltage space 29 at above-below direction, and inner end embeds in the fixed scroll 24.

(7) discharge tube

Discharge tube 20 is used for the refrigeration agent in the shell 10 is discharged to outside the shell 10, and airtight shape ground embeds on the main part shell 11 of shell 10.And this discharge tube 20 forms the drum that extends along the vertical direction, and has the inner end 36 on the underpart that is fixed on housing 23.In addition, the interior end opening of discharge tube 20 is that the inflow entrance of refrigeration agent is towards lower opening.

The welding method of＜main part shell and bottom main bearing 〉

In the 1st mode of execution, main part shell 11 and bottom main bearing 60 is by laser bonding and fastening.

Particularly, at first, the pattern when main part shell 11 and the relative position of bottom main bearing 60 are positioned to finish with the product of high low pressure dome scroll compressor 1 on short transverse, Zhou Fangxiang, radial direction is identical.At this moment, the relative position of main part shell 11 and the radial direction of bottom main bearing 60 as shown in Figure 2, facial 11a of the welding of main part shell 11 and the gap H1 of the welding face 60a of bottom main bearing 60 are maintained in greater than 0mm and below 0.2mm.And, on the facial 60a of the welding of bottom main bearing 60, be formed with recess 60b towards the facial 11a side opening of welding, in this recess 60b, be pressed into soldering pin 80.In addition, bottom main bearing 60 utilizes cast iron to form, and is relative therewith, and this soldering pin 80 utilizes the low carbon steel that is fit to form as welding base metal.

Then, under the state after like this main part shell 11 and bottom main bearing 60 being positioned, from the outer circumferential face side of main part shell 11 towards radial direction roughly to welding facial 11a irradiating laser LS.This laser LS welds soldering pin 80 fusions of main part shell 11 and bottom main bearing 60.In addition, do not form the hole on the facial 11a of the welding before irradiating laser LS.And the light source of laser LS (not shown) moves continuously to observe the mode of describing the V word in the facial 11a of welding from radial direction, so the fusion position 70 of fusion becomes V-shape shown in Figure 3 by the irradiation of laser LS.At this moment, near the summit 70a of the V at fusion position 70 word, the light source of laser LS (not shown) is to observe from radial direction, and the mode of the summit 70a band fillet of V word moves.In addition, in the laser bonding of main part shell 11 and bottom main bearing 60, do not use the weldering underfill material fully.In addition, the fusion position 70 of V-shape is formed on three positions on the outer circumferential face of main part shell 11.

The welding method of＜main part shell and upper wall portions and bottom wall portion 〉

In the 1st mode of execution, main part shell 11 and upper wall portions 12 and bottom wall portion 13 are by laser bonding and fastening.Below, specifying the laser welding method of main part shell 11 and upper wall portions 12, the situation of the laser bonding of main part shell 11 and bottom wall portion 13 is too.

Pattern when at first, main part shell 11 and the relative position of upper wall portions 12 are positioned to finish with the product of high low pressure dome scroll compressor 1 on short transverse, Zhou Fangxiang, radial direction is identical.At this moment, shown in Fig. 4 (a), the upper end portion 11b of main part shell 11 and the underpart 12a of upper wall portions 12 locate in overlapped mode.And the assembling performance of attention main part shell 11 and upper wall portions 12 is provided with gap H2 between upper end portion 11b and underpart 12a.And, to the most external of the radial direction among the underpart 12a of upper wall portions 12, be that the ring-type position 12b of integral body of Zhou Fangxiang of the foot of short transverse implements the C chamfering.The precision of this C chamfering is adjusted into, and the integral body that spreads all over the Zhou Fangxiang of ring-type position 12b is below the C0.1.

Then, under the state that like this main part shell 11 and upper wall portions 12 is positioned, from the outer circumferential face side of main part shell 11 towards gap H2 irradiating laser LS.This laser LS welds the upper end portion 11b of main part shell 11 and the underpart 12a fusion of upper wall portions 12.That is, main part shell 11 and upper wall portions 12 are by fillet welding.And, in the laser bonding of this main part shell 11 and upper wall portions 12, supply with the weldering underfill material.Thus, shown in Fig. 4 (b), even melt metal flows into gap H2, thickness sufficient also can be guaranteed in fusion position 90.In addition, as a reference, Fig. 4 (c) illustrates near the situation of not supplying with end 11b, the 12a of weldering underfill material when carrying out laser bonding.And the light source of laser LS (not shown) moves continuously in the mode of describing the ring-type track along the integral body of Zhou Fangxiang, so the fusion position 90 of fusion forms ring-type by the irradiation of laser LS.At this moment, utilize photographic camera to follow the tracks of on the 12b of ring-type position, to form the crest line of the chamfering of ring-type, thereby be the irradiation position that reference line is adjusted laser LS with the crest line of this chamfering.

The running action of＜high low pressure dome scroll compressor 〉

When drive motor 16 is driven, live axle 17 rotation, movable scroll 26 not from then the running of revolving round the sun.So low-pressure refrigerant gas is sucked into pressing chamber 40 by suction pipe 19 from the peripheral side of pressing chamber 40, follow the volume-variation of pressing chamber 40 and be compressed, become high-pressure gas refrigerant.Then, this high-pressure gas refrigerant is discharged to muffler space 45 by drain passageway 41 from the central part of pressing chamber 40, then, flow out to clearance space 18 by connecting path 46, scroll side path 47, case side path 48 and exhaust port 49, between the internal surface of guide plate 58 and main part shell 11 towards side flow down.And then this gas refrigerant is between the internal surface of guide plate 58 and main part shell 11 during towards following side flow, its part shunting and flowing at circumferencial direction between guide plate 58 and drive motor 16.In addition, at this moment, the lubricant oil in the entrained gas refrigeration agent is separated.On the other hand, another part of gas refrigerant after the shunting cools off in the path 55 towards following side flow at motor, reverse after flowing to the lower space of below of drive motor 16, the air gap path between stator 51 and rotor 52 or with the motor cooling path 55 of connecting path 46 opposed sides (left side among Fig. 1) in flow towards the top.Then, the gas refrigerant that comes that flows by the gas refrigerant behind the guide plate 58 with in air gap path or motor cooling path 55 collaborates at clearance space 18 places, from the inner end 36 inflow discharge tubes 20 of discharge tube 20, and is discharged to outside the shell 10.And then, be discharged to after the outer gas refrigerants of shell 10 circulate in refrigerant circuit, be inhaled into scroll compression body 15 by suction pipe 19 once more and compress.

The feature of＜high low pressure dome scroll compressor 〉

(1)

In the manufacturing process of the high low pressure dome scroll compressor 1 of the 1st mode of execution, laser bonding is used in the welding of main part shell 11 and bottom main bearing 60.Thus, compared with use the situation of electric arc welding like that in the past, the heat affecting minimizing that welding causes can suppress the distortion of shell 10.And, even thick shell such as the wall thickness of the used for high-pressure refrigerant of carbon dioxide etc. also can not can be given fastening bottom, shifting ground main bearing 60.

The present invention is under the situation of the compressor that is applied to have up and down bearing, can prevent the skew of the axle that the distortion of its shell causes, on the other hand, be applied to prevent the skew of the relative position of stator 51 and rotor 52 under the situation of compressor that a side has bearing.

(2)

In the manufacturing process of the high low pressure dome scroll compressor 1 of the 1st mode of execution, the gap H1 between the facial 60a of welding of facial 11a of the welding of main part shell 11 and bottom main bearing 60 is maintained in greater than 0mm and below 0.2mm.Thus, can fully guarantee the intensity of the laser bonding of main part shell 11 and bottom main bearing 60.

(3)

In the manufacturing process of the high low pressure dome scroll compressor 1 of the 1st mode of execution, when the welding of main part shell 11 and bottom main bearing 60, do not need on the facial 11a of the welding of main part shell 11, to offer the hole in advance.Using like that under the situation of electric arc welding in the past, and needing on the facial 11a of welding, to offer the hole in advance.Under this situation, the hole of when welding, wanting landfill temporarily to offer, so, need to adjust in detail the welding position.Therefore, in the 1st mode of execution that uses laser bonding, weld job is easier than in the past.

(4)

In the manufacturing process of the high low pressure dome scroll compressor 1 of the 1st mode of execution, when the welding of main part shell 11 and bottom main bearing 60, do not use the weldering underfill material.Thus, weld job is easy, can also reduce manufacture cost simultaneously.

(5)

In the manufacturing process of the high low pressure dome scroll compressor 1 of the 1st mode of execution, to observe from radial direction, the fusion position 70 that the fusion by main part shell 11 and bottom main bearing 60 forms is V-shape.And at this moment, the summit 70a of the V word at fusion position 70 is the shape of band fillet.Therefore, the weld job person can describe to be used to form the track of the laser LS at fusion position 70 simply, on the other hand, can form fusion position 70 strong from the opposing of the pressurization of direction up and down and that can avoid the stress of random position to concentrate.

(6)

In the 1st mode of execution, spread all over the integral body of the Zhou Fangxiang of main part shell 11 and weld, still, like this, under the situation of welding part wide ranges, whole heat affecting is excessive easily.Particularly using R410a or CO ₂Deng the compressor of high-pressure refrigerant in, require to improve the compressive strength of sealing shell, so, the tendency that exists the thickness of slab of shell to increase.If under this condition, use electric arc welding, then long for the pin of fully guaranteeing the welding part, need to reduce welding speed or carry out 2 layers, 3 layers welding, whole heat affecting further increases.

Therefore, in the manufacturing process of the high low pressure dome scroll compressor 1 of the 1st mode of execution, main part shell 11 uses laser bonding with the welding of upper wall portions 12 and bottom wall portion 13.Thus, compared with use the situation of electric arc welding like that in the past, the heat affecting minimizing that welding causes can suppress the distortion of shell 10.

(7)

In the high low pressure dome scroll compressor 1 of the 1st mode of execution, pay attention to the assembling performance of main part shell 11 and upper wall portions 12, between upper end portion 11b and underpart 12a, be provided with gap H2.Under this situation, shown in Fig. 4 (c), shone by laser LS and melt metal enters this gap H2.

Therefore, in the manufacturing process of the high low pressure dome scroll compressor 1 of the 1st mode of execution, when the laser bonding of main part shell 11 and upper wall portions 12 and bottom wall portion 13, use the weldering underfill material.Thus, even melt metal flows among the H2 of gap, thickness sufficient also can be guaranteed in fusion position 90.

(8)

In the manufacturing process of the high low pressure dome scroll compressor 1 of the 1st mode of execution, when the laser bonding of main part shell 11 and upper wall portions 12 and bottom wall portion 13, adopt fillet welding.Thus, can judge the quality of welding by visual examination.

The variation of＜the 1 mode of execution 〉

(A)

In the 1st mode of execution, adopt the high low pressure dome scroll compressor 1 of the 1st mode of execution of closed type, still, compressor can be a high pressure dome compressor, also can be low pressure dome compressor.And, also can be half airtight type or opening compressor.

(B)

In the high low pressure dome scroll compressor 1 of the 1st mode of execution, adopt scroll compression body 15, still, compressing mechanism also can be rotary compressor structure, piston type compressed mechanism, helical compression mechanism etc.And scroll compression body 15 also can be the scroll compression body of bidentate or co-rotating type (returning り イ プ altogether).

(C)

In the high low pressure dome scroll compressor 1 of the 1st mode of execution, as preventing that free-wheeling system from adopting partition ring 39, still, also can adopt conducts such as pin, ball formula joiner, crank to prevent free-wheeling system.

(D)

In the 1st mode of execution, enumerated the example of the situation of in refrigerant circuit, using high low pressure dome scroll compressor 1, but, be not limited to idle call about purposes, also can be the compressor that uses in the system of monomer or be assembled into, gas fan, pressure-increasing machine, pump etc.

(E)

Having lubricant oil in the high low pressure dome scroll compressor 1 of the 1st mode of execution, still, also can be the compressor, gas fan, pressure-increasing machine, pump etc. that do not have oil or exempt to refuel (have the no oil of oil can) type.

(F)

In the high low pressure dome scroll compressor 1 of the 1st mode of execution, the gap H1 of the facial 60a of welding of facial 11a of the welding of main part shell 11 and bottom main bearing 60 is maintained in greater than 0mm and below 0.2mm.But, as long as gap H1 is maintained in greater than 0mm and just enough below 0.6mm.This is because when gap H1 surpassed 0.6mm, the intensity of the welding of main part shell 11 and bottom main bearing 60 can sharply reduce.

(G)

In the high low pressure dome scroll compressor 1 of the 1st mode of execution, the fusion position 70 of V-shape is formed on three positions on the outer circumferential face of main part shell 11, still, also can be formed on four more than the position.And, also can only be formed on a position or be formed on two positions.In addition, being formed under the situation at a plurality of positions, on the outer circumferential face of main part shell 11, spread all over Zhou Fangxiang or short transverse or spread all over Zhou Fangxiang and short transverse formation.

(H)

In the high low pressure dome scroll compressor 1 of the 1st mode of execution, main part shell 11 and upper wall portions 12 fillet welding, but also can be butt welding.Under the situation of using butt welding, to compare with the situation of using fillet welding, sharp point is to weld the heat affecting that causes to be reduced.

Under this situation, for example shown in Fig. 5 (a) and Fig. 5 (b), main part shell 11 or upper wall portions 12 are formed the band stairstepping, can molten drop be set on main part shell 11 and prevent wall 11c, perhaps, also can molten drop be set on upper wall portions 12 and prevent wall 12c.This molten drop prevents that wall 11c, 12c from bringing into play the effect of backing plate in laser bonding, can prevent that molten drop from coming off and sneak into compressor inside.And, in this variation, also can utilize the part of inner member to replace molten drop to prevent the function of wall 11c, 12c performance.For example, also can prevent wall along on the whole opposed housing 23 of Zhou Fangxiang molten drop being set, import the new parts of ring-type in mode along the fusion position 90 of ring-type at fusion position 90 with ring-type.

And, under this situation, shown in Fig. 5 (c), also can implement C chamfering (for example C0.1 is following) to the light source side in the docking site of main part shell 11 and upper wall portions 12 by laser LS.At this moment, utilizing photographic camera to follow the tracks of to form the crest line of this chamfering of ring-type, thus, is the irradiation position that reference line is adjusted laser LS with the crest line of this chamfering.

The situation of the welding of main part shell 11 and bottom wall portion 13 too.

The 2nd mode of execution

The high low pressure dome scroll compressor of the 2nd mode of execution of the present invention has the structure identical with the high low pressure dome scroll compressor 1 of the 1st mode of execution, and still, the welding method of main part shell and bottom main bearing etc. are different.Therefore, the welding method of main part shell and bottom main bearing mainly is described herein.

In addition, the high low pressure dome scroll compressor of the 2nd mode of execution is to use CO ₂(carbon dioxide) is that prerequisite designs as the gas refrigerant of compressed object, need high resistance to pressure, so, the thickness of slab of main part shell 11, upper wall housing department 12 and diapire housing department 13 is 8～10mm, (3～4mm) compare the outer casing thickness of the compressor of using with common refrigeration agents such as R410A, quite thick.

The manufacture method of＜bottom main bearing 〉

(1) material

The raw material of bottom main bearing 60 are that the iron material is the steel billet that has added C:2.3～2.4wt%, Si:1.95～2.05wt%, Mn:0.6～0.7wt%, P:＜0.035wt%, S:＜0.04wt%, Cr:0.00～0.50wt%, Ni:0.50～1.00wt%.Here said part by weight is the ratio with respect to total amount.And so-called steel billet means iron material with mentioned component in smelting furnace after the fusion, is configured as the material before the final shaping of cylindrical shape etc. by continuous casting apparatus.In addition,, come to determine the content of C and Si as follows here: satisfy tensile strength and tensile elasticity rate than flake graphite cast iron height, and this pair of the flowability person with slide member matrix of the complicated shape that is suitable for being shaped.And, come to determine the content of Ni as follows: become the metal that is suitable for the surface crack that improves the toughness of metal structure and preventing from when to be shaped and form.

(2) the semi-molten die casting is shaped

Using above-mentioned iron material, is the semi-molten die casting forming method bottom main bearing 60 that is shaped by die casting a kind of.

In semi-molten die casting forming process, at first, make it become the semi-molten state by steel billet being carried out radio frequency heating.Then, when the steel billet with this semi-molten state injects mould, utilize die casting machine to apply predetermined pressure, steel billet is configured as the shape of expectation.Then, from mould, take out and quench, thus, the whole white ironization of this metal structure.Then, when implementing heat treatment, the metal structure of this bottom main bearing 60 changes to pearlite/ferrite matrix, the metal structure that is made of graphite granule from the white iron tissue.

(3) machining

The above-mentioned bottom main bearing 60 that is shaped by semi-molten die casting forming method is by further carrying out machining, and becomes the final shape that is assembled in the compressor 1.

＜bottom main bearing and main body cover portion are fixed 〉

The peripheral part 61 of the bottom main bearing 60 that adjoins each other and main body cover portion 11 are as shown in Figure 6 by laser bonding.Particularly, soldered 11w of the bottom of peripheral part 61 and main body cover opposed with it portion 11 be in the face of state (contact condition), should carry out laser bonding in the face of the part irradiating laser from 72 pairs of the laser irradiating parts of laser-beam welding machine (main body is not shown).Here, the internal surface 11s irradiation from the laser of laser irradiating part 72 irradiation along main body cover portion 11 particularly, is shone with about 5 °～20 ° small angle theta (with reference to the angle θ of Fig. 6) with respect to the internal surface 11s of main body cover portion 11.Therefore, soldered 11w of the peripheral part 61 of bottom main bearing 60 and main body cover portion 11 can utilize the smaller penetration zone that heat is significantly guaranteed the anastomosis part of advancing.And, except adopting laser bonding, also with along the mode of the internal surface 11s of main body cover portion 11 directly to the anastomosis part irradiating laser, so, can reduce the heat that enters bottom main bearing 60, bottom main bearing 60 produces distortion hardly, can avoid the such unfavorable condition of axle core skew of live axle 17.

In addition, in the face of state the time,, has the peripheral part 61 of insertion bottom, micro-gap ground main bearing 60 at soldered 11w of bottom that makes peripheral part 61 and main body cover opposed portion 11 with respect to main body cover portion 11 with it.Thus, the bottom of peripheral part 61 and soldered 11w face across small gap.To separate small gap be core alignment for the core that makes main body cover portion 11 and bottom main bearing 60 between like this.

The feature of＜compressor 〉

(1)

In the scroll compressor 1 of the 2nd mode of execution, unlike in the past, main body cover portion 11 and bottom main bearing 60 were welded, but fetched the joint that carries out both by laser beam welding by electric arc welding.

Only from the outside of shell 10 to connect the form irradiating laser of main body cover portion 11, it (is 8～10mm) thickness of slab here that main body cover portion 11 has 5mm above, therefore, if spended time is not guaranteed many heats that advances, the penetration zone of main body cover portion 11 and bottom main bearing 60 will diminish.On the other hand, when heat is advanced in increase, be difficult to guarantee the positional accuracy of bottom main bearing 60 owing to the distortion that on main body cover portion 11 grades, produces.

In view of this, in compressor 1, with respect to the bottom of the peripheral part 61 of soldered the 11w of the internal surface 11s of main body cover portion 11 and bottom main bearing 60 in the face of part, with angle θ direct irradiation laser along the internal surface 11s of main body cover portion 11.Like this, carry out laser welding method by adopting, thereby utilize the fewer heat that advances to increase both penetration zones, guarantee the intensity of anastomosis part from the inboard direct part irradiating laser of facing of shell 10 to soldered 11w and peripheral part 61.

In addition, under the identical situation of advancing heat, with from the outside irradiating laser of shell 10 and make it connect main body cover portion 11 and the method that bottom main bearing 60 is welded in the main body cover portion 11 is compared, adopt direct said method, can improve the intensity of anastomosis part in the face of the part irradiating laser to bottom main bearing 60 and main body cover portion 11.

(2)

Not from the outside irradiating laser of shell 10 and make it connect main body cover portion 11 to weld bottom main bearing 60, but as described in above-mentioned (1), employing is directly carried out laser bonding to the part irradiating laser of facing of soldered 11w and peripheral part 61 from the inboard of shell 10, and the effect of advancing the heat reduction that adopts this method to produce is more than the 5mm, particularly above very effective under the situation of 7mm at the thickness of slab of main body cover portion 11.As compressor 1, the thickness of slab of main body cover portion 11 is under the situation of 8～10mm, when the outside irradiating laser of shell 10 carries out laser bonding, in order fully to guarantee the penetration zone of main body cover portion 11 and bottom main bearing 60, big heat enters bottom main bearing 60, produces distortion and is difficult to guarantee the precision of a core.

The 3rd mode of execution

The schematic configuration of＜compressor 〉

Rotary (more particularly being swing type) compressor 101 of the 3rd mode of execution of the present invention as shown in Figure 7, mainly shell 110, swing compressing mechanism 115, drive motor 116, suction pipe 119a, 119b and the discharge tube 119c by airtight dome constitutes.In this swing compressor 101, gas receiver (gas-liquid separator) 190 is installed on shell 110.

In addition, compressor 101 is to use CO ₂(carbon dioxide) is that prerequisite designs as the gas refrigerant of compressed object.

(1) shell

Shell 110 has: main body cover roughly cylindraceous portion 111; Be welded on the bowl-shape upper wall housing department 112 of the upper end portion of main body cover portion 111 airtight shape; And airtight shape be welded on the bowl-shape diapire housing department 113 of the underpart of main body cover portion 111.And, in this shell 110, mainly take in: the swing compressing mechanism 115 that gas refrigerant is compressed; And the drive motor 116 that is configured in the top of swing compressing mechanism 115.This swing compressing mechanism 115 is connected by crankshaft 117 with drive motor 116, and this crankshaft 117 extends in shell 110 along the vertical direction.

In addition, this compressor 101 is CO ₂The compressor that refrigeration agent is used needs high resistance to pressure, so the thickness of slab of main body cover portion 111, upper wall housing department 112 and diapire housing department 113 is 8～10mm, (3～4mm) compare the outer casing thickness of the compressor of using with common refrigeration agents such as R410A, quite thick.

(2) swing compressing mechanism

As shown in Figure 7 and Figure 8, swing compressing mechanism 115 is mainly by constituting with the bottom: crankshaft 117; Piston 121,128; Lining 122,122; Protecgulum 123; The 1st cylinder block 124; Intermediate plate 127; The 2nd cylinder block 126; And bonnet 125.In addition, in the 3rd mode of execution, protecgulum the 123, the 1st cylinder block 124, intermediate plate the 127, the 2nd cylinder block 126 and bonnet 125 are one by a plurality of bolton.

A) cylinder block

The 1st cylinder block 124 is identical structure with the 2nd cylinder block 126, so, the 1st cylinder block 124 mainly is described, to the explanation of the 2nd cylinder block 126 omission repeating parts.

As shown in Figure 8, in the 1st cylinder block 124, be formed with cylinder-bore 124a, inlet hole 124b, discharge route 124c and blade reception hole 124d.Cylinder-bore 124a is the columned hole that connects along running shaft 101a.Inlet hole 124b runs through cylinder-bore 124a from outer circumferential face 124e.Discharge route 124c forms by a part of otch to interior all sides of the cylindrical part that forms cylinder-bore 124a.Blade reception hole 124d is the hole that is used to take in the blade part 121b of piston 121 described later, and its thickness of slab direction along the 1st cylinder block 124 connects.The part of the running shaft 101a side of blade reception hole 124d is taken in lining 122 described later, slides with lining 122.

And, in the cylinder-bore 124a of the 1st cylinder block 124, take in the eccentric axial portion 117a of crankshaft 117 and the roller sections 121a of piston 121, in blade reception hole 124d, take under the state of the blade part 121b of piston 121 and lining 122, discharge route 124c towards protecgulum 123 sides and be clipped in protecgulum 123 and intermediate plate 127 between.Its result in swing compressing mechanism 115, forms cylinder chamber between protecgulum 123 and intermediate plate 127, this cylinder chamber is divided into suction chamber 115a that is communicated with inlet hole 124b and the discharge chamber 115b that is communicated with discharge route 124c by piston 121.

The 2nd cylinder block 126 is formed with cylinder-bore, inlet hole, discharge route and blade reception hole similarly.Also take in the roller sections of the eccentric axial portion 117b and the piston 128 of crankshaft 117 in the cylinder-bore of the 2nd cylinder block 126, still, phase place staggers 180 ° with the eccentric axial portion 117a and the roller sections 121a that are accommodated among the cylinder-bore 124a of the 1st cylinder block 124.And the discharge route of the 2nd cylinder block 126 is clipped in the middle between plate 127 and the bonnet 125.Its result in swing compressing mechanism 115, also forms cylinder chamber between intermediate plate 127 and bonnet 125.

B) crankshaft

In crankshaft 117, be provided with: be configured in the eccentric axial portion 117a among the cylinder-bore 124a of the 1st cylinder block 124 in the bottom; And be configured in eccentric axial portion 117b in the cylinder-bore of the 2nd cylinder block 126.Two eccentric axial portion 117a, 117b form, and eccentric shaft each other clips the running shaft 101a of crankshaft 117 and be opposed.The top of crankshaft 117 is fixed on the rotor 152 of drive motor 116.

C) piston

The piston 121 that is configured among the cylinder-bore 124a of the 1st cylinder block 124 is identical structure with piston 128 in the cylinder-bore that is configured in the 2nd cylinder block 126.Here, be that example describes with piston 121.

As shown in Figure 8, piston 121 has roller sections 121a cylindraceous and to the outstanding blade part 121b of the radial outside of this roller sections 121a.In addition, roller sections 121a inserts among the cylinder-bore 124a of the 1st cylinder block 124 under the state on the eccentric axial portion 117a that is embedded in crankshaft 117.Thus, when crankshaft 117 rotations, roller sections 121a is that revolution motion is carried out at the center with the running shaft 101a of crankshaft 117.And blade part 121b is accommodated among the blade reception hole 124d.Thus, blade part 121b is when shaking, along its length with respect to lining 122 and the blade reception hole 124d motion of advancing and retreat.

D) lining

Lining 122 all is provided with respect to piston 121 and piston 128, still, here, describes to be set to example with respect to piston 121.

Lining 122 is roughly half-terete a pair of parts, is accommodated among the blade reception hole 124d of the 1st cylinder block 124 in the mode of the blade part 121b that clips piston 121.

E) protecgulum

Protecgulum 123 is the parts that cover the discharge route 124c side of the 1st cylinder block 124, is entrenched on the shell 110.Be formed with the 123a of bearing portion on this protecgulum 123, crankshaft 117 inserts among the 123a of this bearing portion.And, on this protecgulum 123, being formed with opening 123b, this opening 123b is used for and will flows through next refrigerant gas guiding to discharge tube 119c by the discharge route 124c that is formed on the 1st cylinder block 124.And, this opening 123b sealing or open by the expulsion valve (not shown) of the adverse current that is used to prevent refrigerant gas.

F) bonnet

Bonnet 125 be across cylinder block 124,126 and intermediate plate 127 and with protecgulum 123 opposed parts, cover the below of the 2nd cylinder block 126.Be formed with the 125a of bearing portion on this bonnet 125, crankshaft 117 inserts among the 125a of this bearing portion.And bonnet 125 has the peripheral part 125b of ring-type.The internal surface 111s of the outer circumferential face of peripheral part 125b and main body cover portion 111 is opposed, and two faces are faced.As described later, the bottom of the outer circumferential face of the peripheral part 125b of bonnet 125 and engage by laser bonding with soldered the 111w of the internal surface 111s of its opposed main body cover portion 111.

In addition, though do not illustrate, be formed with opening on this bonnet 125, this opening is used for and will flows through next refrigerant gas guiding to discharge tube 119c by the discharge route that is formed on the 2nd cylinder block 126.

G) intermediate plate

Intermediate plate 127 is configured between the 1st cylinder block 124 and the 2nd cylinder block 126, separately the cylinder chamber that forms respectively up and down.

(3) drive motor

In the 3rd mode of execution, drive motor 116 is direct current motors, and it is mainly by constituting with the bottom: the stator 151 that is fixed on the ring-type on the internal face of shell 110; And rotate the rotor 152 that is accommodated in stator 151 inboards freely in the mode that separates micro-gap (air gap path).

In stator 151, in tooth portion (not shown), be wound with copper cash, be formed with coil end 153 with the below up.And, on the outer circumferential face of stator 151, being provided with iron core cutting part (not shown), this iron core cutting part, and separates predetermined interval ground otch and is formed on a plurality of positions up to the lower end surface from the upper-end surface of stator 151 on Zhou Fangxiang.

In rotor 152, be fixed with crankshaft 117 in mode along running shaft 101a.

In addition, the copper cash that is wound on the stator 151 of drive motor 116 is connected with 3 terminal pins of wiring terminal 170, is supplied to power supply.

(4) suction pipe

Suction pipe 119a is provided with in the mode that connects shell 110, and an end is communicated with inlet hole 124b on being formed on the 1st cylinder block 124, and the other end is communicated with gas receiver 190.

Suction pipe 119b also is provided with in the mode that connects shell 110, and an end is communicated with inlet hole on being formed on the 2nd cylinder block 126, and the other end is communicated with gas receiver 190.

(5) discharge tube

Discharge tube 119c is provided with in the mode of the upper wall housing department 112 of perforation shell 110.

(6) manufacture method of slide member

In the compressor 101 of the 3rd mode of execution, the manufacture method of the bottom main bearing 60 of slide member such as piston 121,128, protecgulum 123, intermediate plate 127 and bonnet 125 and the 2nd mode of execution is same, after being shaped by die casting, implements cutting and makes.

(7) bonnet of swing compressing mechanism and main body cover portion is fixing

As shown in Figure 9, the bonnet 125 of swing compressing mechanism 115 is fixed in the main body cover portion 111 by laser bonding.Particularly, soldered the 111w of the internal surface 111s of the bottom of the outer circumferential face of the peripheral part 125b of bonnet 125 and main body cover opposed with it portion 111 is in the face of state (contact condition), should carry out laser bonding in the face of the part irradiating laser from 72 pairs of the laser irradiating parts of laser-beam welding machine (main body is not shown).Here, the internal surface 111s irradiation from the laser of laser irradiating part 72 irradiation along main body cover portion 111, particularly, with respect to the internal surface 111s of main body cover portion 111 small angle theta (with reference to the angle θ of Fig. 9) irradiating laser with about 5 °～20 °.Therefore, soldered 111w of the peripheral part 125b of bonnet 125 and main body cover portion 111 can utilize the fewer penetration zone that heat is significantly guaranteed the anastomosis part of advancing.And, except adopting laser bonding, also with along the mode of the internal surface 111s of main body cover portion 111 directly to the anastomosis part irradiating laser, so, can reduce the heat that enters bonnet 125, bonnet 125 produces distortion hardly, can avoid the axle core skew of crankshaft 117 or the wear extent of swing compressing mechanism 115 to increase such unfavorable condition.

In addition, by Fig. 7 and Fig. 9 as can be known, from the laser of the laser irradiating part 72 of laser-beam welding machine from the below of bonnet 125, be that the opposition side of drive motor 116 residing sides of bonnet 125 shines.And, as shown in Figure 7, owing to adopt following method: make the bonnet 125 that is positioned at lower side (from drive motor 116 side far away) in the swing compressing mechanism 115 extend to main body cover portion 111, carry out laser bonding from the below to bonnet 125 and main body cover portion 111, so can reduce the focal length of laser, can improve the precision of joint.

And, to soldered 111w of the peripheral part 125b of the ring-type of bonnet 125 and main body cover portion 111 in the face of part, spread all over complete cycle ground enforcement laser bonding.

The running action of＜compressor 〉

When drive motor 116 is driven, crankshaft 117 rotates around running shaft 101a, the eccentric rotation of eccentric axial portion 117a makes its outer circumferential face contact with the inner peripheral surface of the cylinder-bore 124a of the 1st cylinder block 124 to revolve round the sun while be entrenched in the roller sections 121a of the piston 121 on this eccentric axial portion 117a.And, be accompanied by roller sections 121a and in cylinder chamber, revolve round the sun, on one side blade part 121b keeps the bi-side motion of advancing and retreat by lining 122 on one side.So the suction pipe 119a of the refrigerant gas of low pressure from the inlet hole 124b that is connected the 1st cylinder block 124 sucks, be compressed and after becoming high pressure, discharge from discharge route 124c as higher pressure refrigerant gas.

Similarly, when drive motor 116 was driven, the eccentric rotation of eccentric axial portion 117b made its outer circumferential face contact with the inner peripheral surface of the cylinder-bore of the 2nd cylinder block 126 to revolve round the sun while be entrenched in the roller sections of the piston 128 on this eccentric axial portion 117b.Thus, the suction pipe 119b of the refrigerant gas of low pressure from the inlet hole that is connected the 2nd cylinder block 126 sucks, and is compressed and after becoming high pressure, discharges from discharge route as higher pressure refrigerant gas.

The feature of＜compressor 〉

(1)

In the swing type compressor 101 of the 3rd mode of execution, unlike in the past, main body cover portion 111 and swing compressing mechanism 115 were welded, but fetched the joint that carries out both by laser beam welding by electric arc welding.

Only from the outside of shell 110 to connect the form irradiating laser of main body cover portion 111, it (is 8～10mm) thickness of slab here that main body cover portion 111 has 5mm above, therefore, if spended time is not guaranteed many heats that advances, the penetration zone of main body cover portion 111 and bonnet 125 will diminish.On the other hand, when heat is advanced in increase, in main body cover portion 111, produce distortion, be difficult to guarantee the positional accuracy of bonnet 125, that is, be difficult to guarantee to swing the relative positional accuracy of compressing mechanism 115 and crankshaft 117.

In view of this, in compressor 101, with respect to the outer circumferential face of soldered the 111w of the internal surface 111s of main body cover portion 111 and the peripheral part 125b of the bonnet 125 that contacts with this soldered 111w in the face of part, along the internal surface 111s direct irradiation laser of main body cover portion 111.Like this, carry out laser welding method by adopting from the inboard direct part irradiating laser of facing of shell 110 to soldered 111w and peripheral part 125b, thereby utilize the fewer heat that advances to increase both penetration zones, guarantee the intensity of anastomosis part.

And, owing to directly main body cover portion 111 and bonnet 125 are welded by laser bonding, so, do not need to clamp intermediary's parts of the mounting plate that in the past used etc., just can realize the miniaturization of cost reduction and compressor 101.

In addition, under the identical situation of advancing heat, with from the outside irradiating laser of shell 110 and make it connect main body cover portion 111 and the method that bonnet 125 is welded in the main body cover portion 111 is compared, adopt direct said method, can improve the intensity of anastomosis part in the face of the part irradiating laser to bonnet 125 and main body cover portion 111.

(2)

Not from the outside irradiating laser of shell 110 and make it connect main body cover portion 111 to weld bonnet 125, but as described in above-mentioned (1), employing is directly carried out laser bonding to the part irradiating laser of facing of soldered 111w and peripheral part 125b from the inboard of shell 110, and the effect of advancing the heat reduction that adopts this method to produce is more than the 5mm, particularly above very effective under the situation of 7mm at the thickness of slab of main body cover portion 111.As compressor 101, the thickness of slab of main body cover portion 111 is under the situation of 8～10mm, when the outside irradiating laser of shell 110 carries out laser bonding, in order fully to guarantee the penetration zone of main body cover portion 111 and bonnet 125, big heat enters bonnet 125 and main body cover portion 111, in main body cover portion 111, produce distortion, be difficult to guarantee to swing the relative positional accuracy of compressing mechanism 115 and crankshaft 117.

(3)

In the swing type compressor 101 of the 3rd mode of execution, protecgulum the 123, the 1st cylinder block 124, bonnet 125 and piston 121 etc. are made via semi-molten die casting forming process.Therefore, can easily obtain the cylinder block of the flake graphite cast iron system that tensile strength and the hardness ratio sand casting process method by in the past makes and the tensile strength and the high cylinder block and the piston of hardness of piston.And, can pass through the semi-molten die casting, use forming method (near net shape) to come molded component near net shape, the machining processes of cutting etc. seldom gets final product, and weld strength is also than FC material height.

In addition, also can not adopt semi-molten die casting forming method, partly solidify the die casting forming method and adopt.

(4)

The swing type compressor 101 of the 3rd mode of execution is CO ₂The compressor that refrigeration agent is used, internal pressure is very high, but, to soldered 111w of the peripheral part 125b of the ring-type of bonnet 125 and main body cover portion 111 in the face of part, spread all over complete cycle ground and carry out laser bonding, so, can not produce the unfavorable condition that swing compressing mechanism 115 comes off from shell 110.

(5)

In the swing type compressor 101 of the 3rd mode of execution, the state that will become one with the rotor 152 with drive motor 116 as the bonnet 125 of one of component parts of swinging compressing mechanism 115 inserts in the main body cover portion 111, under the state that the core that takes out stator 151 and rotor 152 is assembled, carry out laser bonding.And, can suppress distortion as mentioned above like that by laser bonding, so, in compressor 101, the uniformity in the gap of stator 151 and rotor 152 improves, and, can easily guarantee to swing the relative positional accuracy of each component parts of compressing mechanism 115, therefore, the wear extent of each component parts of vibration or swing compressing mechanism 115 can be controlled in the scope of predetermined design load.

The variation of＜the 3 mode of execution 〉

(A)

The compressor 101 of the 3rd mode of execution adopts by making piston rotate in the rotary compressor that compresses in cylinder chamber, the swing type compressor of roller sections and the incorporate form of blade part, but the present invention also can be applied to the compressor that roller sections and blade part separate.

(B)

In the compressor 101 of the 3rd mode of execution, with the peripheral part 125b laser bonding of the ring-type of bonnet 125 in main body cover portion 111, but, also can constitute, it or not bonnet 125, but make the 1st cylinder block 124, intermediate plate the 127, the 2nd cylinder block 126 or protecgulum 123 extend to main body cover portion 111, these parts and main body cover portion 111 are carried out laser bonding.

(C)

The compressor 101 of the 3rd mode of execution is to form cylinder chamber between protecgulum 123 and the intermediate plate 127 and also form the compressor of the so-called two cylinder types of cylinder chamber between intermediate plate 127 and bonnet 125, but, in not having the compressor of intermediate plate (compressor of so-called single cylinder type), also can use the present invention.

Utilizability on the industry

The manufacture method of compressor of the present invention has following effect: can fully guarantee shell and in The intensity of the welding of the welding of section's parts or main part shell and end enclosure, and, can suppress The heat affecting that causes of welding can realize the manufacturing of the compressor of low distortion thus, as shell and The compressor that internal part is soldered and main part shell and the soldered compressor of end enclosure Manufacture method be useful.

Claims (19)

1. the manufacture method of a compressor, this compressor (1,101) possesses: shell (10,11,111), it has the 1st one (11a, 11w, 111w) at internal surface (11s, 111s); And inner member (60,125), the inside that it is accommodated in described shell has and described the 1st one opposed the 2nd one (60a, 61,125b), and wherein, the manufacture method of described compressor has following operation:

Positioning process is faced the 1st one of described shell and the 2nd one of described inner member; And

The laser bonding operation to described the 1st one and described the 2nd one at least a portion irradiating laser in the face of part, is carried out laser bonding to described shell and described inner member.

2. the manufacture method of compressor according to claim 1, wherein,

In described positioning process, greater than 0mm and the mode below 0.6mm described shell and described inner member are positioned with the gap of described the 2nd one (60a) with described the 1st one (11a),

In described laser bonding operation, do not supply with the weldering underfill material, will not form described the 1st laser bonding under the state in hole on described the 2nd one.

3. the manufacture method of compressor according to claim 2, wherein,

In described positioning process, greater than 0mm and the mode below 0.2mm described shell and described inner member are positioned with described gap.

4. according to the manufacture method of claim 2 or 3 described compressors, wherein,

In described laser bonding operation, from observing with the direction of described the 1st one and described the 2nd quadrature, in described the 1st one and described the 2nd one by laser exposure and the fusion position (70) of fusion is the shape of open curve.

5. the manufacture method of compressor according to claim 4, wherein,

In described laser bonding operation, from observing with described the 1st direction with described the 2nd quadrature, described fusion position is a V-shape.

6. the manufacture method of compressor according to claim 5, wherein,

In described laser bonding operation, the summit of the V word at described fusion position is the shape of band fillet.

7. the manufacture method of compressor according to claim 1, wherein,

In described laser bonding operation, along the internal surface of described shell (11,111) at least a portion irradiating laser, described shell and described inner member are carried out laser bonding in the face of part to described the 1st one (11w, 111w) and described the 2nd one (61,125b).

8. the manufacture method of compressor according to claim 7, wherein,

The 1st one thickness of described shell is more than the 5mm.

9. according to the manufacture method of claim 7 or 8 described compressors, wherein,

Described compressor is scroll compressor (1), and it possesses rotating machinery, the bearing (60) that described rotating machinery has rotating machinery (16) and the running shaft (17) of described rotating machinery is carried out the axle supporting,

Described inner member is described bearing.

10. according to the manufacture method of claim 7 or 8 described compressors, wherein,

Described compressor is rotary compressor (101), and it possesses compressing mechanism (115), and described compressing mechanism has cylinder part (124,126) and blocks the cover (123,125,127) of the opening of described cylinder part,

Described inner member is described cylinder part or described cover.

11. the manufacture method of compressor according to claim 10, wherein,

Described inner member is by semi-molten/partly solidify described cylinder part or described cover that die casting is shaped.

12. according to the manufacture method of claim 10 or 11 described compressors, wherein,

Described compressor also has rotating machinery (116), and described rotating machinery (116) makes eccentric rotor rotated (121) rotation in the space that is formed by described cylinder part and described cover,

Described cover has: the 1st cover (123) that is positioned at the described rotating machinery side of described cylinder part; With across described cylinder part and opposed the 2nd cover of described the 1st cover (125),

Described inner member is described the 2nd cover,

In described laser bonding operation, described the 1st one of described shell shone described laser with the described the 2nd one of described the 2nd cover in the face of part from the opposition side of the residing side of described rotating machinery.

13. according to the manufacture method of each the described compressor in the claim 7～12, wherein,

In described laser bonding operation, spend the following described laser of angular illumination with 30 with respect to the internal surface of described shell.

14. according to the manufacture method of each the described compressor in the claim 7～13, wherein,

In described laser bonding operation,, spread all over complete cycle ground and shine described laser described the 1st one and described the 2nd one in the face of part.

15. a compressor, described compressor utilize each the described manufacture method in the claim 1～14 to make, and carbon dioxide is compressed.

16. the manufacture method of a compressor, this compressor (1) possesses shell (10), and described shell (10) has: cylindrical main body portion shell (11); And airtight shape be welded on the end enclosure (12,13) of the end of described main part shell, wherein, the manufacture method of described compressor has following operation:

Positioning process positions described main part shell and described end enclosure; And

The laser bonding operation, supply with weldering underfill material on one side, the Zhou Fangxiang along described main part shell carries out laser bonding to described main part shell and described end enclosure on one side.

17. the manufacture method of compressor according to claim 16, wherein,

In described laser bonding operation, described main part shell and described end enclosure are by fillet welding.

18. the manufacture method of compressor according to claim 16, wherein,

In described laser bonding operation, described main part shell and described end enclosure are by butt welding.

19. a compressor, described compressor utilize each the described manufacture method in the claim 16～18 to make, and carbon dioxide is compressed.

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