CN214787998U

CN214787998U - Compressor

Info

Publication number: CN214787998U
Application number: CN202120053805.8U
Authority: CN
Inventors: 叶世佳; 梁圣明; 郭永; 王小峰
Original assignee: Guangdong Meizhi Precision Manufacturing Co Ltd
Current assignee: Guangdong Meizhi Precision Manufacturing Co Ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-11-19
Anticipated expiration: 2031-01-08

Abstract

The application provides a compressor, including the pump body and casing, the pump body is arranged in the casing, the weld zone has on the pump body, the casing with the weld zone adopts the laser to weld the welding and links to each other. The assembling method of the compressor comprises the following steps: assembling a pump body; placing the assembled pump body in a housing; and aligning the position of the outer side of the shell corresponding to the welding area on the pump body by using a laser welder, and welding and connecting the welding area and the shell. According to the compressor, the shell and a welding area on the pump body are welded and connected through laser welding, so that the pump body is welded in the shell; the deformation of the pump body during welding can be reduced, leakage of the pump body caused by welding is avoided, a welding hole does not need to be formed in the shell, and the attractive appearance of the compressor is guaranteed.

Description

Compressor

Technical Field

The application belongs to the technical field of compression equipment and refrigeration, and particularly relates to a compressor.

Background

The compressor generally includes a housing, a pump body, and the like, wherein the pump body is installed in the housing and is welded to the housing. The pump body and the casing of the current compressor are generally welded by MAG (Metal Active Gas Arc Welding). However, after MAG welding, the pump body deforms a large amount, resulting in leakage of the pump body.

Disclosure of Invention

An object of the embodiment of this application is to provide a compressor to solve the pump body and the casing welded connection of the compressor that exist among the prior art, can lead to the big problem of pump body deflection.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the compressor comprises a pump body and a shell, wherein the pump body is arranged in the shell, a welding area is arranged on the pump body, and the shell is connected with the welding area through laser welding.

In an alternative embodiment, the gap between the housing and the weld area is less than or equal to 0.5 mm.

In an alternative embodiment, the length of the weld of the welding zone to the shell is in the range of 10-50 mm.

In an alternative embodiment, the length of the weld is in the range of 20-30 mm.

In an alternative embodiment, the number of welds of the welding zone to the shell is in the range of 3-6.

In an alternative embodiment, a plurality of said welds are at the same location axially of said housing.

In an alternative embodiment, the welding seam of the welding area and the shell is in an included angle range of 0-30 degrees with the radial direction of the shell; or the included angle between the welding seam of the welding area and the shell and the radial direction of the shell ranges from 80 degrees to 100 degrees.

In an alternative embodiment, the weld is angled at 0 ° or 90 ° to the radial direction of the housing.

In an alternative embodiment, the width of the weld where the weld zone is welded to the housing is in the range of 2-5 mm.

In an alternative embodiment, the weld width is in the range of 3-4 mm.

In an alternative embodiment, the material of the soldering region is different from the material of the housing.

In an alternative embodiment, the pump body comprises a cylinder, a rotor arranged in the cylinder, a crankshaft driving the rotor to rotate, a main bearing covered at one end of the cylinder and an auxiliary bearing covered at the other end of the cylinder; one or more of the peripheral side surface of the cylinder, the peripheral side surface of the main bearing, and the peripheral side surface of the auxiliary bearing constitute the weld zone.

In an alternative embodiment, the thickness of the weld zone is greater than or equal to 2 mm.

In an alternative embodiment, the welding zone and the shell are welded to form a welding seam with a locus in a shape of 8, arc, ring, saw tooth or straight line.

The beneficial effect of the compressor that this application embodiment provided lies in: compared with the prior art, the compressor has the advantages that the shell and the welding area on the pump body are welded and connected through laser welding, so that the pump body is welded in the shell; the deformation of the pump body during welding can be reduced, leakage of the pump body caused by welding is avoided, a welding hole does not need to be formed in the shell, and the attractive appearance of the compressor is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic cross-sectional view of a partial structure of a compressor according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the compressor of FIG. 1 with the pump body welded to the shell;

fig. 3 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to a second embodiment of the present application;

fig. 4 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to a third embodiment of the present application;

fig. 5 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to a fourth embodiment of the present application;

fig. 6 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to a fifth embodiment of the present application;

fig. 7 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to a sixth embodiment of the present application;

fig. 8 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to a seventh embodiment of the present application;

fig. 9 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to an eighth embodiment of the present application;

fig. 10 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to a ninth embodiment of the present application;

fig. 11 is a schematic structural view of a compressor according to a tenth embodiment of the present application, in which a pump body is welded in a shell;

fig. 12 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to an eleventh embodiment of the present application;

fig. 13 is a schematic structural view illustrating a pump body welded in a shell in a compressor according to a twelfth embodiment of the present application;

FIG. 14 is a flow chart of a method of assembling a compressor provided in an embodiment of the present application;

fig. 15 is a schematic diagram illustrating a travel swing track of a laser welder during welding according to an embodiment of the present application;

fig. 16 is a schematic diagram of a travel swing track of another laser welder during welding according to an embodiment of the present application.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-a compressor;

11-a housing;

20-a pump body; 201-welding zone; 202-a weld; 21-cylinder; 22-a main bearing; 23-an auxiliary bearing; 24-a rotor; 25-crankshaft.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and 2, a compressor 100 provided herein will now be described. The compressor 100 includes a pump body 20 and a housing 11, the pump body 20 is disposed in the housing 11, and the pump body 20 is protected by the housing 11. Pump body 20 has a weld area 201 for mating and welding with housing 11 to fixedly attach housing 11 to pump body 20 to support pump body 20. The shell 11 is connected with a welding area 201 on the pump body 20 by laser welding so as to realize the welding fixation of the pump body 20 and the shell 11; the deformation is small by using laser welding, so that the pump body 20 can have small deformation amount during welding, and the leakage of the pump body 20 caused by welding deformation of the pump body 20 is avoided; in addition, since the pump body 20 and the housing 11 are fixed by laser welding, it is not necessary to form a welding hole in the housing 11 or a welding hole in the pump body 20, and even if the housing 11 and the pump body 20 are manufactured, deformation of the housing 11 and the pump body 20 can be reduced, and a good appearance of the compressor 100 can be ensured.

Compared with the prior art, the compressor 100 provided by the application has the advantages that the shell 11 is connected with the welding area 201 on the pump body 20 in a welding mode through laser welding, so that the pump body 20 is welded in the shell 11; the deformation of the pump body 20 during welding can be reduced, leakage of the pump body 20 caused by welding can be avoided, a welding hole does not need to be formed in the shell 11, and the attractive appearance of the compressor 100 is guaranteed.

In one embodiment, referring to fig. 1 and 2, the gap between the housing 11 and the welding area 201 on the pump body 20 is less than or equal to 0.5mm, for example, the gap between the housing 11 and the welding area 201 on the pump body 20 may be 0mm, 0.05mm, 0.1mm, 0.15mm, 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, etc., so that heat can more easily penetrate through the housing 11 to reach the welding area 201 on the pump body 20 during laser welding, so as to weld the welding area 201 with the housing 11, and reduce the deformation of the welding area 201 on the housing 11 and the pump body 20.

In one embodiment, the space between the housing 11 and the welding area 201 on the pump body 20 is less than or equal to 0.2mm, and if the gap between the housing 11 and the welding area 201 on the pump body 20 can be 0mm, 0.02mm, 0.05mm, 0.07mm, 0.1mm, 0.12mm, 0.15mm, 0.17mm, 0.2mm, etc., not only can the high mounting precision of the pump body 20 and the housing 11 be ensured, but also laser welding is facilitated, and deformation during welding is reduced.

In one embodiment, the thickness of the welding area 201 of the pump body 20 is greater than or equal to 2mm, so as to ensure that the deformation of the pump body 20 is small when the welding area 201 is welded to the housing 11 by laser.

In one embodiment, the material of the welding area 201 on the pump body 20 is different from the material of the housing 11, so that the cost can be reduced and the manufacturing process can be facilitated. Of course, only the material of the welding portion 201 of the pump body 20 may be made different from the material of the case 11, or the material of the entire pump body 20 may be made different from the material of the case 11. Of course, the material of the welding area 201 on the pump body 20 may also be the same as the material of the housing 11, so as to better connect the welding area 201 on the pump body 20 with the housing 11 by welding.

In one embodiment, the weld area 201 of the pump body 20 is cast iron and the housing 11 is mild steel for ease of machining and cost reduction. Of course, the pump body 20 may be made of other materials. The housing 11 may be made of other materials.

In one embodiment, the pump body 20 includes a cylinder 21, a rotor 24, a crankshaft 25, a main bearing 22, and a sub bearing 23; the main bearing 22 and the sub bearing 23 are installed at both ends of the cylinder 21, respectively, i.e., the main bearing 22 covers one end of the cylinder 21 and the sub bearing 23 covers the other end of the cylinder 21, to seal the cylinder 21 against leakage. A rotor 24 is installed in the cylinder 21, and the rotor 24 is connected to a crankshaft 25 to rotate the rotor 24 in the cylinder 21 by the crankshaft 25 to compress gas. In the present embodiment, the circumferential side surface 211 of the cylinder 21 forms a welding zone 201, so that the circumferential side surface 211 of the cylinder 21 is welded to the housing 11 when the pump body 20 is laser-welded to the housing 11.

When the welding area 201 of the pump body 20 is laser welded to the housing 11, a welding trace, that is, a weld 202 formed during welding, is formed.

In one embodiment, the length of the welding seam 202 formed by welding the welding area 201 and the housing 11 is in a range of 10-50mm, for example, the length of the welding seam 202 formed by welding the welding area 201 and the housing 11 may be 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, etc., so as to ensure that the welding area 201 and the housing 11 are firmly welded and connected, reduce deformation of the pump body 20, and improve welding speed. When the length of the weld 202 formed by welding the welding area 201 and the housing 11 is less than 10mm, it is difficult to weld firmly, and when the weld needs to be welded more firmly, more welds 202 need to be welded, which increases the deformation of the pump body 20. When the length of the welding seam 202 formed by welding the welding area 201 and the housing 11 is greater than 50mm, the welding seam 202 is too long, the time for one laser welding is increased, and the deformation of the welding area 201 is increased.

In one embodiment, the length of the weld 202 formed by welding the welding region 201 and the housing 11 is in a range of 20-30mm, for example, the length of the weld 202 formed by welding the welding region 201 and the housing 11 may be 20mm, 22mm, 25mm, 27mm, 30mm, etc., so that good and firm welding fixation of the welding region 201 and the housing 11 on the pump body 20 can be ensured, and small deformation of the pump body 20 can be ensured.

In one embodiment, the number of the welding seams 202 formed by welding the welding area 201 and the housing 11 ranges from 3 to 6, for example, the welding seams 202 formed by welding the welding area 201 and the housing 11 may be 3, 4, 5 or 6, so as to ensure that the welding area 201 and the housing 11 are well and firmly welded on the pump body 20, and to ensure that the deformation of the pump body 20 is small. When the number of the welds 202 formed by welding the welding areas 201 to the housing 11 is less than 3, it is difficult to perform firm welding, and when it is necessary to perform more firm welding, it is necessary to make the welds 202 longer, which increases the deformation of the pump body 20. When the number of the welding seams 202 formed by welding the welding area 201 and the case 11 is more than 6, the number of the welding seams 202 is excessive, the number of times and the time of the laser welding are increased, and the deformation of the welding area 201 is increased.

In one embodiment, the number of the welding seams 202 formed by welding the welding area 201 and the housing 11 is 3, so as to ensure the welding firmness, reduce the number of welding times and reduce the deformation of the pump body 20 during welding.

In one embodiment, the width of the weld 202 formed by welding the welding region 201 and the housing 11 is in a range of 2-5mm, for example, the width of the weld 202 formed by welding the welding region 201 and the housing 11 may be 2mm, 2.2mm, 2.5mm, 2.7mm, 3mm, 3.2mm, 3.5mm, 3.7mm, 4mm, 4.2mm, 4.5mm, 4.7mm, 5mm, etc., so as to ensure that the welding region 201 and the housing 11 are firmly welded together, reduce deformation of the pump body 20, and increase welding speed. When the width of the weld 202 formed by welding the welding area 201 and the housing 11 is less than 2mm, it is difficult to weld firmly, and when the weld needs to be welded more firmly, more welds 202 need to be welded, which increases the deformation of the pump body 20. When the width of the welding seam 202 formed by welding the welding area 201 and the housing 11 is greater than 5mm, the welding seam 202 is too wide, the time for one laser welding is increased, and the deformation of the welding area 201 is increased.

In one embodiment, the width of the weld 202 is 3-4mm, for example, the width of the weld 202 formed by welding the welding region 201 and the housing 11 may be 3mm, 3.2mm, 3.5mm, 3.7mm, 4mm, etc., so as to ensure that the welding region 201 and the housing 11 on the pump body 20 are welded well and firmly, and the deformation of the pump body 20 is small.

In one embodiment, the plurality of welding seams 202 formed by welding the welding area 201 and the shell 11 are located at the same position in the axial direction of the shell 11, that is, the plurality of welding seams 202 formed by welding the welding area 201 and the shell 11 are located on the same radial surface of the shell 11, so that the design and the laser welding are facilitated, and the good appearance of the shell 11 can be ensured. Of course, the plurality of welds 202 formed by welding the weld zone 201 to the housing 11 may be located at different positions in the axial direction of the housing 11, and the weld zone 201 of the pump body 20 may be welded to the housing 11.

In one embodiment, the welding area 201 is welded to the housing 11 to form a weld 202 in a straight line for easy design and fabrication.

In one embodiment, the included angle between the welding seam 202 formed by welding the welding area 201 and the housing 11 and the radial direction of the housing 11 is 0 °, that is, the welding seam 202 is arranged along the radial direction of the housing 11, so as to facilitate laser welding, reduce welding time, and reduce deformation of the pump body 20 during laser welding.

In one embodiment, referring to fig. 3, an included angle between a welding seam 202 formed by welding the welding area 201 and the housing 11 and the radial direction of the housing 11 is 90 °, that is, the welding seam 202 is disposed along the axial direction of the housing 11, so as to facilitate laser welding, reduce welding time, and reduce deformation of the pump body 20 during laser welding.

In one embodiment, referring to fig. 4, a welding seam 202 formed by welding the welding area 201 and the shell 11 is radially inclined from the shell 11 to ensure that the welding area 201 and the shell 11 are more firmly welded and fixed.

In one embodiment, the welding seam 202 formed by welding the welding area 201 and the shell 11 has an angle in a range of 0 ° to 30 ° with respect to the radial direction of the shell 11, for example, the angle between the welding seam 202 and the shell 11 may be 0 °, 10 °, 15 °, 20 °, 25 °, 30 °, and so on, i.e., the welding seam 202 tends to extend along the radial direction of the shell 11, so as to ensure that the welding area 201 and the shell 11 are welded and fixed more firmly.

In one embodiment, the welding seam 202 formed by welding the welding region 201 and the shell 11 has an angle in a range of 80 ° to 100 ° with respect to the radial direction of the shell 11, for example, the angle between the welding seam 202 and the shell 11 may be 80 °, 85 °, 90 °, 95 °, 100 °, and so on, that the welding seam 202 is more inclined to extend along the axial direction of the shell 11, so as to ensure that the welding region 201 and the shell 11 are more firmly welded and fixed.

In one embodiment, referring to fig. 5, the welding seam 202 formed by welding the welding area 201 and the housing 11 is curved to ensure that the welding area 201 and the housing 11 are more firmly welded and fixed.

In one embodiment, referring to fig. 6, the peripheral side 221 of the main bearing 22 forms a welding zone 201, i.e., when the pump body 20 is welded to the housing 11, the peripheral side 221 of the main bearing 22 is actually welded to the housing 11.

In one embodiment, referring to fig. 7, the circumferential side 231 of the auxiliary bearing 23 forms a weld zone 201, i.e., when the pump body 20 is welded to the housing 11, the circumferential side 231 of the auxiliary bearing 23 is actually welded to the housing 11.

In one embodiment, referring to fig. 8, the circumferential side 221 of the main bearing 22 and the circumferential side 231 of the auxiliary bearing 23 are both adjacent to the housing 11, such that the circumferential side 221 of the main bearing 22 and the circumferential side 231 of the auxiliary bearing 23 can both form a welding zone 201, and when the pump body 20 is welded to the housing 11, the circumferential side 221 of the main bearing 22 and the circumferential side 231 of the auxiliary bearing 23 can both be welded to the housing 11.

In one embodiment, referring to fig. 9, the circumferential side 221 of the main bearing 22 and the circumferential side 231 of the auxiliary bearing 23 are both adjacent to the housing 11, such that the circumferential side 221 of the main bearing 22 and the circumferential side 231 of the auxiliary bearing 23 can both form a welding zone 201, and the circumferential side 221 of the main bearing 22 and the housing 11 can be welded together when the pump body 20 and the housing 11 are welded together.

In one embodiment, referring to fig. 10, the circumferential side 221 of the main bearing 22 and the circumferential side 231 of the auxiliary bearing 23 are both adjacent to the housing 11, such that the circumferential side 221 of the main bearing 22 and the circumferential side 231 of the auxiliary bearing 23 can both form a welding zone 201, and the circumferential side 231 of the auxiliary bearing 23 can be welded to the housing 11 when the pump body 20 is welded to the housing 11.

In one embodiment, referring to fig. 11, the circumferential side 221 of the main bearing 22 and the circumferential side 211 of the cylinder 21 are both adjacent to the housing 11, so that the circumferential side 221 of the main bearing 22 and the circumferential side 211 of the cylinder 21 can both form a welding zone 201, and when the pump body 20 is welded to the housing 11, the circumferential side 221 of the main bearing 22 and the circumferential side 211 of the cylinder 21 can both be welded to the housing 11. Of course, when the pump body 20 and the housing 11 are welded, only the circumferential side surface 221 of the main bearing 22 or the circumferential side surface 211 of the cylinder 21 may be welded to the housing 11.

In one embodiment, referring to fig. 12, the circumferential side 231 of the auxiliary bearing 23 and the circumferential side 211 of the cylinder 21 are both adjacent to the housing 11, such that the circumferential side 231 of the auxiliary bearing 23 and the circumferential side 211 of the cylinder 21 can both form a weld zone 201, and both the circumferential side 231 of the auxiliary bearing 23 and the circumferential side 211 of the cylinder 21 can be welded to the housing 11 when the pump body 20 is welded to the housing 11. Of course, when the pump body 20 is welded to the housing 11, only the circumferential side surface 231 of the sub bearing 23 or the circumferential side surface 211 of the cylinder 21 may be welded to the housing 11.

In one embodiment, referring to fig. 13, the circumferential side 211 of the cylinder 21, the circumferential side 221 of the main bearing 22, and the circumferential side 231 of the sub bearing 23 are all adjacent to the housing 11, such that the circumferential side 211 of the cylinder 21, the circumferential side 221 of the main bearing 22, and the circumferential side 231 of the sub bearing 23 can each form a weld zone 201, and when the pump body 20 is welded to the housing 11, the circumferential side 211 of the cylinder 21, the circumferential side 221 of the main bearing 22, and the circumferential side 231 of the sub bearing 23 can all be welded to the housing 11. Of course, when the pump body 20 is welded to the housing 11, any one or two of the circumferential side surface 211 of the cylinder 21, the circumferential side surface 221 of the main bearing 22, and the circumferential side surface 231 of the sub bearing 23 may be welded to the housing 11.

In one embodiment, compressor 100 further includes an accumulator connected to pump body 20 by tubing. The accumulator is provided so that the refrigerant in the accumulator can flow into the cylinder 21 of the pump body 20 and be compressed.

In one embodiment, referring to fig. 15, the welding area 201 is circular and the welding seam 202 is formed by welding the housing 11, so that the swing path of the laser welder during welding is circular, which is convenient to control and ensures that the pump body 20 is well welded to the housing 11.

In one embodiment, referring to fig. 16, the welding zone 201 is welded to the housing 11 to form a welding seam 202 having a figure 8 shape, so that the laser welder can easily control the welding seam by welding the welding seam with the housing 11 and ensure that the pump body 20 is well welded to the housing 11. Of course, the welding area 201 and the welding seam 202 formed by welding the housing 11 have an arc-shaped track. Of course, the welding area 201 and the welding seam 202 formed by welding the housing 11 have other tracks, such as zigzag, linear, etc.

Referring to fig. 14, an assembly method of the compressor 100 is also disclosed in the embodiments of the present application. The assembly method of the compressor 100 can be used to assemble the compressor 100 as described in any of the above embodiments. Referring to fig. 2, the assembling method of the compressor 100 includes the following steps:

s1: assembling the pump body 20;

s2: placing the assembled pump body 20 in the housing 11;

s3: the weld zone 201 is welded to the housing 11 using a laser welder aligned with the outside of the housing 11 at a position corresponding to the weld zone 201 on the pump body 20.

In step S1, the pump body 20 is assembled so as to mount the pump body 20 in the housing 11, which enhances the assembly effect and also facilitates mounting the pump body 20 in the housing 11. The laser welder is aligned to the position, corresponding to the welding area 201, on the outer side of the housing 11, the heat of the laser penetrates through the housing 11 to reach the welding area 201 during welding, so that the welding area 201 is connected with the housing 11 in a welding mode, and in this mode, the pump body 20 can be ensured to be connected with the housing 11 in a welding mode without arranging welding holes on the housing 11 and the pump body 20 and adding welding wires.

The assembling method of the compressor 100 provided by the application has the beneficial effects that: compared with the prior art, the shell 11 is welded and connected with the welding area 201 on the pump body 20 from the outer side of the shell 11 through the laser welder, so that the pump body 20 is welded in the shell 11; the deformation of the pump body 20 during welding can be reduced, leakage of the pump body 20 caused by welding can be avoided, a welding hole does not need to be formed in the shell 11, and the attractive appearance of the compressor 100 is guaranteed.

In one embodiment, the laser welder includes a single mode laser and a laser welding head coupled to the single mode laser to direct energy generated by the single mode laser toward the region of the weld zone 201 for precision welding. And use single mode laser, the facula diameter of welded is littleer, and is littleer to pump body 20's influence, and then reduces or avoids pump body 20 to warp. Of course, the laser welding device may be configured by a multimode laser and a laser welding head.

In one embodiment, the laser welding head is a swing type welding head to flexibly control the pointing position of the laser beam and improve the welding accuracy. Of course, the laser welding head can also be a galvanometer type welding head so as to be convenient to control and improve the installation precision.

In one embodiment, referring to fig. 15, the laser welder has a circular arc-shaped welding track for easy control and good welding connection between the pump body 20 and the housing 11; and the welding zone 201 and the shell 11 are welded to form a welding seam 202 with a circular track.

In one embodiment, referring to fig. 16, the trajectory of the laser welding device during welding is 8-shaped to ensure good welding connection between the pump body 20 and the housing 11, and to make the trajectory of the welding seam 202 formed by welding the welding area 201 and the housing 11 form 8-shaped. Of course, the trajectory of the travel swing of the laser welder during welding may also be an arc, corresponding to the trajectory of the weld 202 formed by welding the welding area 201 and the housing 11. Of course, the trajectory of the travel and swing of the laser welder during welding may have other shapes, such as a zigzag shape, a zigzag shape corresponding to the trajectory of the weld 202 formed by welding the welding area 201 to the housing 11, a straight shape corresponding to the trajectory of the weld 202 formed by welding the welding area 201 to the housing 11, and the like.

According to the compressor 100 and the assembling method of the compressor 100, the shell 11 and the welding area 201 of the pump body 20 are connected in a welding mode through laser welding, so that the welding deformation of the pump body 20 can be reduced, and leakage caused by welding deformation of the pump body 20 is avoided.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A compressor comprising a pump body and a casing, the pump body being disposed in the casing, characterized in that: the pump body is provided with a welding area, and the shell is welded and connected with the welding area by laser welding; the gap between the housing and the weld zone is less than or equal to 0.5 mm.

2. The compressor as set forth in claim 1, wherein: the length of a welding seam formed by welding the welding area and the shell ranges from 10mm to 50 mm.

3. A compressor as set forth in claim 2, wherein: the length range of the welding seam is 20-30 mm.

4. A compressor according to any one of claims 1 to 3, wherein: the number of welding seams formed by welding the welding areas and the shell ranges from 3 to 6.

5. The compressor of claim 4, wherein: the welding seams are arranged at the same position in the axial direction of the shell.

6. A compressor according to any one of claims 1 to 3, wherein: the included angle between the welding seam formed by welding the welding area and the shell and the radial direction of the shell ranges from 0 degree to 30 degrees; or the included angle between the welding seam formed by welding the welding area and the shell and the radial direction of the shell ranges from 80 degrees to 100 degrees.

7. The compressor as set forth in claim 6, wherein: the included angle between the welding seam and the radial direction of the shell is 0 degree or 90 degrees.

8. A compressor according to any one of claims 1 to 3, wherein: the width of a welding seam formed by welding the welding area and the shell ranges from 2mm to 5 mm.

9. The compressor as set forth in claim 8, wherein: the width range of the welding seam is 3-4 mm.

10. A compressor according to any one of claims 1 to 3, wherein: the material of the welding area is different from that of the shell.

11. A compressor according to any one of claims 1 to 3, wherein: the pump body comprises an air cylinder, a rotor arranged in the air cylinder, a crankshaft driving the rotor to rotate, a main bearing covered at one end of the air cylinder and an auxiliary bearing covered at the other end of the air cylinder; one or more of the peripheral side surface of the cylinder, the peripheral side surface of the main bearing, and the peripheral side surface of the auxiliary bearing constitute the weld zone.

12. A compressor according to any one of claims 1 to 3, wherein: the thickness of the welding area is greater than or equal to 2 mm.

13. A compressor according to any one of claims 1 to 3, wherein: the welding area and the shell are welded to form a welding seam, and the track of the welding seam is in a shape of 8, an arc, a circular ring, a sawtooth or a straight line.