CN207297351U

CN207297351U - Screw compressor

Info

Publication number: CN207297351U
Application number: CN201721253133.5U
Authority: CN
Inventors: 马麟; 姚文虎; 钱坤; 王彬; 王晓东
Original assignee: Danfoss Tianjin Ltd
Current assignee: Danfoss Tianjin Ltd
Priority date: 2017-09-27
Filing date: 2017-09-27
Publication date: 2018-05-01
Anticipated expiration: 2027-09-27

Abstract

The embodiment of the utility model discloses a kind of screw compressor, and screw compressor includes：Shell；Fixed scroll inside the shell is set, which includes injection inlet, the injection canal being connected with injection inlet, and the injection outlet being connected with injection canal；And injection tube assembly, the injection tube assembly are connected to the injection inlet of fixed scroll, which includes：First pipe fitting, first pipe fitting pass through the through hole in shell and have connecting hole；And the injection-tube of setting inside the shell, the end of the injection-tube are inserted into the connecting hole of first pipe fitting.The screw compressor of embodiment according to the present utility model, such as the installation of screw compressor can be facilitated.

Description

Screw compressor

Technical field

It the utility model is related to a kind of screw compressor.

Background technology

Screw compressor has the injection-tube for being used for injecting a fluid into screw compressor.

Utility model content

The purpose of the embodiment of the utility model is to provide a kind of screw compressor, thus can for example facilitate scroll compression The installation of machine.

The embodiment of the utility model provides a kind of screw compressor, and screw compressor includes：Shell；It is arranged on shell Interior fixed scroll, which includes injection inlet, the injection canal being connected with injection inlet, and connects with injection canal The injection outlet connect；And injection tube assembly, the injection tube assembly are connected to the injection inlet of fixed scroll, the injection-tube Component includes：First pipe fitting, first pipe fitting pass through the through hole in shell and have connecting hole；And it is arranged on shell Interior injection-tube, the end of the injection-tube are inserted into the connecting hole of first pipe fitting.

Embodiment according to the present utility model, first pipe fitting is L-shaped, including Part I and Part II； The Part I limits connecting hole and in shell, and one end of the Part II is connected with Part I, the other end Positioned at hull outside.

Embodiment according to the present utility model, the injection-tube include intermediate tube, be connected with the first end of intermediate tube Two pipe fittings, and the 3rd pipe fitting being connected with the second end of intermediate tube；Wherein, the remote intermediate tube of second pipe fitting End is inserted into the connecting hole of first pipe fitting.

Embodiment according to the present utility model, the 3rd pipe fitting have external screw thread, the injection inlet tool of fixed scroll There is the screw-internal thread fit of internal thread, the external screw thread of the 3rd pipe fitting and the injection inlet of fixed scroll.

Embodiment according to the present utility model, the intermediate tube of the injection-tube are copper pipes, and the second of the injection-tube Pipe fitting and the 3rd pipe fitting are couplings.

Embodiment according to the present utility model, the shell have a cylindrical shape, and the through hole in the shell is positioned at described The end of the remote fixed scroll of shell.

Embodiment according to the present utility model, the injection-tube extend along the axial direction of fixed scroll.

Embodiment according to the present utility model, the injection inlet be arranged on fixed scroll towards orbiter side On bottom surface.

Embodiment according to the present utility model, the screw compressor further include：Motor inside the shell, the electricity are set Machine has housing, and the injection-tube is between the housing and the shell.

Embodiment according to the present utility model, the fixed scroll have stage portion, which has circumferential supporting surface, With the stop surface extended radially out from the circumferential direction supporting surface, the stage portion of the end sleeve of the shell in the fixed scroll On circumferential supporting surface, and the stop surface of the stage portion of fixed scroll described in the end surfaces of the end of the shell.

The screw compressor of embodiment according to the present utility model, such as the installation of screw compressor can be facilitated.

Brief description of the drawings

Fig. 1 is that the screw compressor of embodiment according to the present utility model removes the sectional view after shell；

Fig. 2 is the part at the injection inlet on the fixed scroll of the screw compressor of embodiment according to the present utility model Amplification view；

Fig. 3 is the partial enlargement section view at the first pipe fitting of the screw compressor of embodiment according to the present utility model Figure；

Fig. 4 is the sectional view before the screw compressor installation shell of embodiment according to the present utility model；

Fig. 5 is another sectional view before the screw compressor installation shell of embodiment according to the present utility model；

Fig. 6 is the three-dimensional view of the members of the screw compressor of embodiment according to the present utility model, shows note Penetrate tube assembly；

Fig. 7 is the top view of the fixed scroll of the screw compressor of embodiment according to the present utility model, shows injection Flow path；

Fig. 8 is sectional view of the screw compressor of embodiment according to the present utility model in shell procedure is installed；

Fig. 9 is sectional view of the screw compressor of embodiment according to the present utility model after shell is installed；And

Figure 10 is the sectional view of the screw compressor of embodiment according to the present utility model.

Embodiment

The embodiment of the utility model is described below in conjunction with the accompanying drawings.

Referring to Fig. 1 to 10, the screw compressor of embodiment according to the present utility model includes：Shell 80；It is arranged on shell Fixed scroll 10 in 80, the fixed scroll 10 include injection inlet 11, the injection canal 12 being connected with injection inlet 11, and The injection being connected with injection canal 12 exports 13 (referring to Fig. 7)；And injection tube assembly 2, the injection tube assembly 2 are connected to quiet whirlpool The injection inlet 11 of capstan 10.The injection tube assembly 2 can include：First pipe fitting 21, the first pipe fitting 21 pass through shell 80 In through hole 81 and there is connecting hole 211；And the injection-tube 22 in shell 80 is arranged on, the end insertion first of injection-tube 22 In the connecting hole 211 of pipe fitting 21.For example, injection-tube 22 can extend along the axial direction of fixed scroll 10, such as wherein one End can extend to the bottom position of compressor case 80.Injection inlet 11 can be arranged on fixed scroll 10 towards dynamic vortex On the bottom surface of disk or motor side.For example, the connecting hole 211 of at least end of injection-tube 22 and the first pipe fitting 21 is along quiet whirlpool The axial direction extension of capstan 10, and the first pipe fitting 21 is inserted into the end of injection-tube 22 along the axial direction of fixed scroll 10 Connecting hole 211 in.

Referring to Fig. 1,4,5,7, screw compressor further includes orbiter 30.Fixed scroll 10 has end plate and is stretched from end plate The fixed scroll volume gone out, orbiter 30 are rolled up with dynamic vortex, and dynamic vortex volume and fixed scroll volume are cooperatively formed and be situated between for compressing The compression chamber of matter, injection outlet 13 can lead to compression chamber.The fluid being injected is by the first pipe fitting 21, into injection-tube 22, injection canal 12 is being entered by injection inlet 11, is entering compression chamber finally by injection outlet 13.Injection canal 12 can To there is two.

As shown in figure 3, the first pipe fitting 21 has the shape of L-shaped, it includes：Extend along the axial direction of fixed scroll 10 Part I 212, and with Part I 212 form L-shaped Part II 213；Part I 212 limits connecting hole 211 simultaneously And in shell 80；One end of Part II 213 is connected with Part I 212, and the other end of Part II 213 is located at housing Outside, for being connected with the pipeline outside shell 80.Part I 212 can extend along the axial direction of fixed scroll 10.

As shown in Figure 2,3, injection-tube 22 includes intermediate tube 221, the second pipe fitting being connected with the first end of intermediate tube 221 222, and the 3rd pipe fitting 223 being connected with the second end of intermediate tube 221, the end of the remote intermediate tube 221 of the second pipe fitting 222 Portion is inserted into the connecting hole 211 of the first pipe fitting 21.3rd pipe fitting 223 can have external screw thread, the injection of fixed scroll 10 Entrance 11 can have internal thread, and the external screw thread of the 3rd pipe fitting 223 and the internal thread of the injection inlet 11 of fixed scroll 10 are matched somebody with somebody Close.3rd pipe fitting 223 can have the part similar with hexagon bolt head, and the 3rd pipe fitting 223 is screwed into quiet vortex In the injection inlet 11 of disk 10.

Referring to Fig. 3, the intermediate tube 221 of injection-tube 22 can be copper pipe etc., the second pipe fitting 222 and the 3rd of injection-tube 22 Pipe fitting 223 can be formed from steel.Groove can be equipped with the outer wall of second pipe fitting 222, to be put into sealing ring 225, Huo Zhe Groove can be equipped with the inner wall of the connecting hole 211 of one pipe fitting 21, to be put into sealing ring, improves the second pipe fitting 222 and first Sealing performance between the connecting hole 211 of pipe fitting 21.

Referring to Fig. 4, embodiment according to the present utility model, shell 80 has a cylindrical shape, the through hole 81 in shell 80 In the end of the remote fixed scroll 10 of shell 80.

Referring to Fig. 4, in the state shown in fig. 4, i.e., under inversion state, when installing shell 80 from the top down, the first pipe connects First 21 Part I 212 is located in shell 80, and Part II 213 is inserted into the through hole 81 of shell 80, in installation shell 80 Meanwhile first pipe fitting 21 can be aligned with the second pipe fitting 222 of injection-tube 22, it is convenient to the first pipe fitting 21 is sleeved on On second pipe fitting 222 of injection-tube 22.It thereby facilitating installation.Further, since the end of injection-tube is under compressor End, under inversion state, injection-tube is longer, therefore installer can touch injection-tube, thus easily connects the second pipe In the connecting hole 211 of the first pipe fitting 21 of first 222 insertion, without welding.

Referring to Fig. 1, screw compressor further includes：The rack 60 being arranged in shell 80 and the motor being arranged in shell 80 40.Motor 40 has housing 50.Injection-tube 22 is between housing 50 and shell 80.Fixed scroll 10 is fixed on the rack 60, And rack 60 supports orbiter 30.The upper end of the housing 50 of motor 40 is connected with rack 60 at the same time.

As shown in fig. 6, fixed scroll 10 has a stage portion 70, which has a circumferential supporting surface 71, and from this week The stop surface 72 extended radially out to supporting surface 71, the end sleeve of shell 80 are supported in the circumferential of stage portion of fixed scroll 10 On face 71, and the stop surface 72 of the stage portion of the end surfaces fixed scroll 10 of the end of shell 80.

As shown in Figure 8,9, in an inverted manner, shell 80 is installed.The circumferential supporting surface of the stage portion 70 of fixed scroll 10 71 diametrically position the end of shell 80, and stop surface 72 in the axial direction positions the end of shell 80.

Embodiment according to the present utility model, injection tube assembly need not can weld in installation process, and be suitable for It is reverse mounted.

The compressor of embodiment according to the present utility model can be assembled in the production line.

Claims

A kind of 1. screw compressor, it is characterised in that including：

Shell；

Fixed scroll inside the shell is set, which includes injection inlet, the injection canal being connected with injection inlet, with And the injection outlet being connected with injection canal；And

Tube assembly is injected, which is connected to the injection inlet of fixed scroll, which includes：

First pipe fitting, first pipe fitting pass through the through hole in shell and have connecting hole；And

Injection-tube inside the shell is set, and the end of the injection-tube is inserted into the connecting hole of first pipe fitting.
2. screw compressor according to claim 1, it is characterised in that：

First pipe fitting is L-shaped, including Part I and Part II；The Part I limits connecting hole and position In in shell, one end of the Part II is connected with Part I, and the other end is located at hull outside.
3. screw compressor according to claim 1, it is characterised in that：

The injection-tube includes intermediate tube, the second pipe fitting being connected with the first end of intermediate tube, and the second end with intermediate tube 3rd pipe fitting of connection；Wherein, the company of first pipe fitting is inserted into the end of the remote intermediate tube of second pipe fitting Connect in hole.
4. screw compressor according to claim 3, it is characterised in that：

3rd pipe fitting has an external screw thread, and the injection inlet of fixed scroll has an internal thread, the 3rd pipe fitting it is outer The screw-internal thread fit of the injection inlet of screw thread and fixed scroll.
5. screw compressor according to claim 3, it is characterised in that：

The intermediate tube of the injection-tube is copper pipe, and the second pipe fitting of the injection-tube and the 3rd pipe fitting are that steel pipe connects Head.
6. screw compressor according to claim 1, it is characterised in that：

The shell has a cylindrical shape, and the through hole in the shell is located at the end of the remote fixed scroll of the shell.
7. screw compressor according to any one of claim 1 to 6, it is characterised in that：

The injection-tube extends along the axial direction of fixed scroll.
8. screw compressor according to any one of claim 1 to 6, it is characterised in that：

The injection inlet is arranged on the bottom surface towards orbiter side of fixed scroll.
9. screw compressor according to any one of claim 1 to 6, it is characterised in that further include：

Motor inside the shell is set, which has a housing, and the injection-tube be located at the housing and the shell it Between.
10. screw compressor according to any one of claim 1 to 6, it is characterised in that：

The fixed scroll has stage portion, which has circumferential supporting surface, and is radially outward stretched from the circumferential direction supporting surface The stop surface gone out, the end sleeve of the shell is on the circumferential supporting surface of the stage portion of the fixed scroll, and the shell End end surfaces described in fixed scroll stage portion stop surface.