CN100422667C

CN100422667C - Liquid storing device for storing refrigrant in device

Info

Publication number: CN100422667C
Application number: CNB2005100505331A
Authority: CN
Inventors: 陈枫; 吕小丹; 石峰; 张志翔
Original assignee: Zhejiang Sanhua Refrigeration Group Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2005-06-29
Filing date: 2005-06-29
Publication date: 2008-10-01
Anticipated expiration: 2025-06-29
Also published as: CN1888744A

Abstract

This invention is liquid storage inside of machine that is used for storing refrigerants. The existing liquid discharge wielding structure of liquid storage is: tubular flanging is set at underside of the machine. Inner iron pipe and outer copper pipe are wielded at the tubular flanging. It may cause defects such as cracking before wielding. This invention is to fix the said inner iron pipe on a switching seat. The switching seating is set on the said tubular flanging and wielded with the underside of machine to form step at the position of tubular flanging. The said copper pipe contacts with the said step and is wielded with the underside of machine.

Description

Body inside is used to store the reservoir of refrigerant

Technical field

The present invention relates to a kind of Welding Structure of liquid container, especially the drain pipe Welding Structure of air conditioning liquid reservoir.

Background technology

Air conditioning liquid reservoir is a part important in the air-conditioning system, as shown in Figure 1, be installed on compressor during use before; Its operation principle as shown in Figure 2, come the cold-producing medium of flash-pot to enter reservoir from upper end A (entrance point), shunt through screen cloth seat D, flow to the reservoir bottom from the body periphery, the cold-producing medium of gaseous state enters outlet upper end B (the inner), flow out through port of export C (outer end), enter compressor, liquid refrigerant then is trapped in the reservoir bottom; Mainly have following function and purposes:

1, gas-liquid separation effect can effectively separate to come the not cold-producing medium of vaporization and the refrigeration oil, impurity fully of flash-pot, guarantees that cold-producing medium enters compressor with gaseous state, guarantees that compressor does not damage because of liquid hammer;

2, lubrication protection effect can guarantee that a certain proportion of refrigeration oil flows into compressor by spill port, and the part of phase mutual friction in the compressor is lubricated, and forms one deck oil film on its surface, thereby can reduce the wearing and tearing of machine components, prolongs service life of equipment;

3, the impurity in the refrigeration system is filtered in filtration, and anti-locking system produces dirty stifled, influences system effectiveness;

4, liquid storage effect, but too much cold-producing medium in the storage system when moving in system, in system when out of service, can reflux and storage system in most of cold-producing medium and refrigeration oil;

5, sound deadening before liquid reservoir is installed on compressor, can effectively improve the eigentone of refrigerant flow direction and compressor, reduces the noise that brings thus.

Existing air conditioning liquid reservoir, as Granted publication number is the patent of invention of CN2310271Y, it comprises body, bottom at body offers liquid outlet, wherein be fixed with drain pipe, it is characterized in that described liquid outlet is provided with the tubulose flange, iron pipe and outer copper pipe in drain pipe is divided into, and their link portion welds respectively on the flange of liquid outlet.The multiselect irony body that is stamped to form when this air conditioning liquid reservoir is made in actual production, when (as on the body or on interior iron pipe) is provided with the step of conflicting for outer copper pipe at the liquid outlet place, because the plasticity of iron is relatively poor, tend to occur manufacturing deficiencies such as crackle, so that also be difficult to remedy this defective, and then influence the quality of whole air conditioning liquid reservoir by after the high quality welding; Even the tube wall of interior iron pipe is thinner usually, in order to form above-mentioned step or to match with the tubulose flange it is carried out still being difficult to avoid this generation of defects when enlarging is handled.In addition, because of structural particularity, the welding quality of above-mentioned interior iron pipe and outer copper pipe also depends on high quality welding technology, need use furnace brazing technology as the welding of internal iron pipe is fixing, and its energy energy consumption is bigger.

Summary of the invention

The technical assignment of the technical problem to be solved in the present invention and proposition is prone to shortcomings such as crackle when being the above-mentioned processing step that overcomes that existing product exists, a kind of drain pipe Welding Structure of air conditioning liquid reservoir is provided.For this reason, the present invention it take following technical scheme:

The drain pipe Welding Structure of air conditioning liquid reservoir, it is provided with axial to the inner tubulose flange that extends of body in centre, body lower end, in this tubulose flange place welding iron pipe with outside copper pipe; It is characterized in that: the bottom of iron pipe in described is fixed on the adapter, this adapter is set on the described tubulose flange again and welds with the body lower end; The bottom of iron pipe is handled through enlarging and is formed a step in described, and weld on the step of described tubulose flange insertion conflict iron pipe in this and with the body lower end upper end of described outer copper pipe.

As the further of technique scheme improved and replenish, the present invention also comprises following additional (specifically) technical characterictic:

Described body lower end has inner plane, and described adapter has the welding edge corresponding with this inner plane.Be convenient to adapter and body lower end good combination.

Described welding edge is by salient point weldering and described inner plane welding.Easy operating.

Iron pipe is by on spot welding or the furnace brazing fixed transfer seat in described.

Have the solder seam between described outer copper pipe and the tubulose flange, weld by gas brazing between the two.

Described body by last body with after following body docks again welding form, described tubulose flange is arranged on down the body lower end.

Described body is to form at irony tube two ends welding upper end cover and bottom end cover, and described tubulose flange is arranged on the bottom end cover.

Further, described interior iron pipe bottom is handled through described enlarging and is formed expansion mouth, and the upper end of described tubulose flange is provided with and the corresponding step in described interior iron pipe lower end, and the lower end conflict of described interior iron pipe is on the step of this tubulose flange upper end; The welding of the inwall of the expansion mouth outer wall of iron pipe and described adapter realizes the bottom of described interior iron pipe and fixing of described adapter in described; The tubulose flange welding of described outer copper pipe upper end and body.

Described adapter by and the expansion mouth of the inner plane of body and interior iron pipe between spot welding form.

Described adapter by and the expansion mouth of the inner plane of body and interior iron pipe between furnace brazing form.

The tubulose flange of described body is on the plane with described body bottom.

The present invention fixes interior iron pipe by adapter, can be when forming step at tubulose flange place as required internally iron pipe do enlarging and handle or only do trace and handle and unlikely cracking, the then realization of setting up by adapter of the matching relationship of iron pipe and tubulose flange in satisfying; The existence of step makes the outer copper pipe impurity such as scolder of can conflicting thereon when preventing to weld outer copper pipe enter the normal use that influences reservoir in the body; Based on the present invention's improvement structurally, for improving welding procedure, reducing the welding energy consumption provides the enforcement approach.In addition, the present invention also has following technique effect:

1, the application by adapter, can play being connected and fixed between the end cap (or cylindrical shell) of inner iron pipe and reservoir, simultaneously the bigger standing part structure of shaping difficulty of processing, shift out separately and be processed into independently part, inner iron pipe is owing to reduced the shaping difficulty, thereby inner iron pipe can adopt other material of even lower level, reaches the purpose that further reduces cost.

2, since implemented spot welding, can local heat, can improve the efficient of weld job.

3, interior ferrous pipe structure simple, can reduce manufacturing procedure, help implementing to weld in the stove.

4, the body bottom form the salient point weldering of plane, the easier enforcement adapter of this planar structure, owing to exist composition surface and the end cap (or cylindrical shell) of reservoir of this planar structure, adapter to engage, can reliably implement to weld, make it more firm.

Description of drawings

Fig. 1 is the air-conditioning system refrigeration cyclic graph.

Fig. 2 is the reservoir fundamental diagram.

Fig. 3 improves a kind of structural representation at position for the present invention.

Fig. 4 is a kind of reservoir structural representation that utilizes structure shown in Figure 3.

Fig. 5 is the another kind of reservoir structural representation that utilizes structure shown in Figure 3.

The specific embodiment

As shown in Figure 3, the axial tubulose flange 6 to the inner extension of body is set in centre, body 3 lower end, the upper end of tubulose flange 6 is provided with step 61, on this tubulose flange 6, be with an irony thin-walled adapter 2, and its welding edge 8 is welded on the inner plane 5 of body by salient point weldering, the interior iron pipe of handling through enlarging 1 is welded on the inwall of adapter 2 through 13 of the outer walls of its expansion mouth 11, thereby realizes the fixing of internal iron pipe, and has a step 7 near tubulose flange 6; Adapter 2 is placed on the tubulose flange 6 and with the body welding, thereby in making conflict on the step 61 of tubulose flange 6 upper ends in the lower end 12 of iron pipe; Insert along the tubulose flange on the top 41 of outer copper pipe, offsets with described expansion mouth step 7 and realize the fixing of external copper pipe and seal by gas brazing and body 3 welding.

Above-mentioned structure shown in Figure 3 can also be welded by furnace brazing between the inner plane 5 of adapter welding edge 8 and body and between the expansion mouth outer wall 13 of interior iron pipe and the adapter.

As shown in Figure 4, the body of this reservoir forms at irony tube 32 two ends welding upper end cover 33 and bottom end cover 31, and tubulose flange 6 is arranged on the bottom end cover; The process that forms complete product is: earlier interior iron pipe 1 is passed through spot-welded on adapter 2, by the salient point weldering adapter 2 is welded on bottom end cover 31 inboards again, afterwards upper and lower end cap is welded on the two ends of irony tube by carbon dioxide arc welding, with gas brazing outer copper pipe 4 is welded on the bottom end cover 31 at last.

As shown in Figure 5, body be by the last body 35 of irony with after following body 34 docks again welding form, tubulose flange 6 is arranged on down the body lower end; The process that forms complete product is: earlier interior iron pipe 1 is passed through spot-welded on adapter 2, by the salient point weldering adapter 2 is welded on down body 34 inboards again, weld together with upper and lower body butt joint and by carbon dioxide arc welding afterwards, with gas brazing outer copper pipe 4 is welded on down on the body 34 at last.

Claims

1. body inside is used to store the reservoir of refrigerant, and it is provided with axial to the inner tubulose flange (6) that extends of body in body (3) centre, lower end, in this tubulose flange place welding iron pipe (1) and outside copper pipe (4); It is characterized in that: the bottom of iron pipe (1) in described is fixed on the adapter (2), again this adapter (2) is set in last and body (3) the lower end welding of described tubulose flange (6); The bottom of iron pipe (1) is handled through enlarging and is formed a step (7) in described, and body (3) lower end is gone up and be welded in the upper end (41) of described outer copper pipe (4) along the step (7) that described tubulose flange (6) inserts conflict iron pipe in this.

2. body according to claim 1 inside is used to store the reservoir of refrigerant, it is characterized in that described body (3) lower end has inner plane (5), and described adapter (2) has the welding edge corresponding with this inner plane (8).

3. body according to claim 2 inside is used to store the reservoir of refrigerant, it is characterized in that described welding edge (8) is by salient point weldering and described inner plane (5) welding.

4. body according to claim 1 inside is used to store the reservoir of refrigerant, it is characterized in that described interior iron pipe (1) is fixed on the adapter (2) by spot welding or furnace brazing.

5. body according to claim 1 inside is used to store the reservoir of refrigerant, it is characterized in that having between described outer copper pipe (4) and the tubulose flange (6) the solder seam, welds by gas brazing between the two.

6. body according to claim 1 inside is used to store the reservoir of refrigerant, it is characterized in that described body by last body (35) with after following body (34) docks again welding form, described tubulose flange (6) is arranged on down body (34) lower end.

7. body according to claim 1 inside is used to store the reservoir of refrigerant, it is characterized in that described body is to form at irony cylindrical shell (32) two ends welding upper end cover (33) and bottom end cover (31), described tubulose flange (6) is arranged on the bottom end cover (31).

8. body according to claim 1 inside is used to store the reservoir of refrigerant, it is characterized in that described interior iron pipe (1) bottom forms expansion mouth (11) through described enlarging processing; The upper end of described tubulose flange (6) is provided with and the corresponding step (61) in described interior iron pipe lower end (12), conflicts on the step (61) of this tubulose flange upper end in the lower end of described interior iron pipe (1); The bottom of the described interior iron pipe of the inwall of the expansion mouth outer wall (13) of iron pipe and described adapter welding realization and described adapter is fixing in described; Tubulose flange (6) welding of described outer copper pipe upper end (41) and body.

9. body according to claim 8 inside is used to store the reservoir of refrigerant, it is characterized in that spot welding forms between the outer wall (13) of expansion mouth of the inner plane (5) of described adapter (2) and body and interior iron pipe (1).

10. body according to claim 8 inside is used to store the reservoir of refrigerant, it is characterized in that furnace brazing forms between the outer wall (13) of expansion mouth of the inner plane (5) of described adapter (2) and body and interior iron pipe (1).

11. body according to claim 1 inside is used to store the reservoir of refrigerant, the tubulose flange (6) that it is characterized in that described body is on the inner plane (5) of body bottom.