CN211259015U - Connecting pipe assembly and compressor with same - Google Patents

Abstract

The utility model is suitable for a refrigeration and heating technical field provides a connecting pipe subassembly and have its compressor, and this connecting pipe subassembly includes: a pipe body in a hollow form having a first end and a second end disposed in an axial direction of the pipe body; the first flange is formed on the peripheral edge of the first end of the pipe body, and the peripheral surface of the first flange is gradually expanded from the first end to the second end, so that when the peripheral surface of the first flange is arranged on the peripheral edge of the pipe orifice of the compressor shell, the first flange and the second flange are in annular line contact, the contact area is small, a brazing mode is not needed, the contact resistance between the first flange and the second flange is large, a resistance welding mode is easier to use, a qualified welding line can be obtained under lower power, the electric energy consumption and the use of brazing filler metal are reduced, the environmental pollution is reduced, the welding cost is reduced, and the welding quality is easier to ensure; the compressor with the connecting pipe assembly has the advantages that the welding cost between the pipe orifice and the connecting pipe assembly is lower, and the welding quality is easier to guarantee.

Description

Connecting pipe assembly and compressor with same

Technical Field

The utility model relates to a refrigeration and heating technical field, in particular to connecting pipe subassembly and have its compressor.

Background

In the field of refrigeration and heating technology, a compressor is generally used to transfer heat. The air suction port of the air cylinder in the compressor is connected with the elbow of the external liquid reservoir through the pipe orifice on the shell and the connecting pipe arranged on the pipe orifice. At present, the connection between the pipe orifice of the compressor and the connecting pipe mostly adopts a flame brazing mode, and brazing filler metal is filled between the pipe orifice of the compressor and the connecting pipe after being melted so as to obtain better welding quality. However, the method has the problems that the flame brazing production cost is high, the processing welding quality depends on the technical maturity of welding personnel seriously, and meanwhile, the traditional flame welding causes certain pollution to the environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a connecting tube subassembly aims at solving the technical problem that exists when welding between current compressor and the connecting pipe with high costs and welding quality can not effectively be guaranteed.

The utility model discloses a realize like this, a connecting pipe subassembly for with form the mouth of pipe connection on the shell of compressor, a serial communication port, include:

a pipe body in a hollow form having a first end and a second end disposed along an axial direction of the pipe body; and

a first flange formed on an outer peripheral edge of a first end of the pipe body, an outer peripheral surface of the first flange being arranged to be gradually expanded from the first end to the second end; the outer peripheral surface of the first flange is used for being connected with the periphery of the pipe orifice in a welding mode.

In one embodiment, a generatrix of the outer circumferential surface of the first flange is a straight line, an inward concave curve, or an outward convex curve.

In one embodiment, the generatrix is a straight line and the included angle between the generatrix and the radial direction of the tube body is greater than or equal to 30 °.

In one embodiment, the connecting tube assembly further includes a second flange formed on a side of the first flange facing the second end, the second flange having an outer diameter greater than or equal to a maximum outer diameter of the first flange.

In one embodiment, the pipe body comprises first and second pipe elements connected coaxially, the first end being formed on the first pipe element and the second end being formed on the second pipe element; the first flange and the first pipe fitting are integrally formed, the first pipe fitting and the first flange are made of steel, and at least the inner surface and the outer surface of the second pipe fitting are made of copper.

In one embodiment, the material of the second tube is copper; or copper layers are arranged on the inner surface and the outer surface of the second pipe fitting, and a steel layer is arranged between the two copper layers.

In one embodiment, the inner diameter of the first pipe element is larger than the outer diameter of the second pipe element, the second pipe element partially extends into the first pipe element, and one end of the second pipe element extending out of the first pipe element is in an outward expansion shape; or the outer diameter of the first pipe fitting is smaller than the inner diameter of the second pipe fitting, and the second pipe fitting is partially sleeved on the outer side of the first pipe fitting.

Another object of the present invention is to provide a compressor, which comprises a housing and the connecting pipe assembly of the above embodiments, wherein the housing is formed with a pipe opening, and the outer peripheral surface of the first flange is welded to the peripheral edge of the pipe opening.

In one embodiment, the housing is formed with an outwardly projecting boss through which the spout is formed.

In one embodiment, the compressor further includes an inner connection pipe and a cylinder disposed inside the shell, one end of the inner connection pipe extends into the pipe opening and is connected to a suction port of the cylinder, the other end of the inner connection pipe protrudes out of a second end of the connection pipe assembly, and the inner connection pipe is welded to the pipe body at the second end.

The embodiment of the utility model provides a connecting tube subassembly and compressor's beneficial effect lies in:

the first flange is arranged on the peripheral edge of the first end of the pipe body of the connecting pipe assembly, the peripheral edge of the first flange is in a gradually expanding form, when the peripheral surface of the first flange is arranged on the peripheral edge of the pipe orifice of the compressor shell, the first flange and the compressor shell are in annular line contact, the contact area is small, a brazing mode is not needed, the contact resistance between the first flange and the compressor shell is large, a resistance welding mode can be used more easily, a qualified welding line can be obtained under lower power, the electric energy consumption and the use of brazing filler metal are reduced, the environmental pollution is reduced, the welding cost is reduced, and the welding quality is ensured more easily; the compressor with the connecting pipe assembly has the advantages that the welding cost between the pipe orifice and the connecting pipe assembly is lower, and the welding quality is easier to guarantee.

Drawings

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

Fig. 1 is a schematic view illustrating a connection between a compressor and a liquid reservoir according to an embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is a schematic view illustrating a connection between a housing and a connecting pipe assembly of a compressor according to an embodiment of the present invention;

FIG. 4 is an enlarged view at B in FIG. 3;

fig. 5 is a schematic axial cross-sectional view of a connector assembly provided by an embodiment of the present invention;

FIG. 6 is a schematic axial cross-sectional view of a connector assembly according to an embodiment of the present invention with a second tubular member removed;

fig. 7 is a schematic axial cross-sectional view of a second tubular member of a junction block assembly according to an embodiment of the present invention.

The designations in the figures mean:

100-a compressor; 1-shell, 11-boss, 10-pipe orifice; 2-cylinder, 21-suction port; 3-internal connecting pipe; 4-connector pipe assembly, 40-pipe body, 401-first pipe, 4010-female step, 405-first end, 406-second end, 402-second pipe, 41-first flange, 42-second flange;

9-reservoir, 91-elbow.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention 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 for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the patent. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

In order to explain the technical solution of the present invention, the following detailed description is made with reference to the specific drawings and examples.

Referring to fig. 1, 2 and 5, the embodiment of the present invention firstly provides a connecting pipe assembly 4 for connecting with a compressor 100 having a housing 1, and specifically, referring to fig. 3 and 4, connecting with a through pipe orifice 10 formed on the housing 1 to further connect with a liquid reservoir 9. Specifically, the connecting pipe assembly 4 includes a pipe body 40 and a first flange 41, the pipe body 40 is disposed in a hollow form and has a first end 405 and a second end 406 disposed along an axial direction, please refer to fig. 5 and 6, the first flange 41 is formed on an outer peripheral edge of the first end 405 of the pipe body 40, an outer peripheral surface of the first flange 41 is disposed to be gradually expanded from the first end 405 to the second end 406, and the outer peripheral surface of the first flange 41 is used for welding connection with a peripheral edge of the pipe orifice 10.

The embodiment of the utility model provides a connecting pipe assembly 4, the neighboring of its first end 405 of pipe body 40 is equipped with first flange 41, and the periphery of first flange 41 is the form that expands gradually, install when the peripheral face of first flange 41 in the periphery of the mouth of pipe 10 with compressor 100 shell 1, be annular line contact between the two, area of contact is very little, can need not to use the mode of brazing, and, contact resistance between the two is very big, the more easily used resistance welds the mode, can obtain qualified welding seam under less power, can reduce the use of electric energy consumption and brazing filler metal, reduce environmental pollution, reduce welding cost, welding quality guarantees more easily, and then reduce the risk of inside refrigerant or the frozen oil of shell 1 leaking by mouth of pipe 10 etc., can guarantee compressor 100's normal work.

Therefore, in the present embodiment, the outer peripheral surface of the first flange 41 and the spout 10 are welded by resistance welding.

Referring to fig. 5 and 6, in an embodiment, the generatrix of the outer circumferential surface of the first flange 41 may be in the form of a straight line, an inward concave curve or an outward convex curve, and it is only necessary to ensure that the outer diameter of the first flange 41 gradually changes to form a line contact with the nozzle 10.

In an alternative embodiment, as shown in fig. 5 and 6, the generatrix of the outer circumferential surface of the first flange 41 is a straight line. This has the advantage that the first flange 41 is easier to manufacture, which reduces the production costs and increases the production efficiency.

Alternatively, to facilitate the welding operation between the first flange 41 and the nozzle 10, the included angle α between the generatrix and the radial direction of the pipe body 40 is not too small, and may be greater than or equal to 30 °, as shown in fig. 6. Further, the maximum value of the angle α between the generatrix and the radial direction of the tube body 40 may not be particularly limited.

With continued reference to fig. 5 and 6, in one embodiment, the connecting tube assembly 4 further includes a second flange 42, the second flange 42 is formed on a side of the first flange 41 facing the second end 406, an outer diameter of the second flange 42 is uniform and greater than or equal to a maximum outer diameter of the first flange 41, and optionally, an outer diameter of the second flange 42 is equal to a maximum outer diameter of the first flange 41. As such, the first flange 41 and the second flange 42 are substantially trapezoidal or similar to trapezoidal in cross section as a whole in the axial direction of the pipe body 40. This has the advantages that, firstly, the second flange 42 can reinforce the first flange 41, improve the deformation resistance thereof, and prevent the first flange 41 from deforming under the action of external force during the manufacturing and transportation processes, and secondly, the second flange 42 can disperse part of the welding heat during the welding process, thereby avoiding the first flange 41 from deforming obviously due to the overheating of welding; third, the second flange 42 is arranged here to avoid sharp corners at the edge of the first flange 41, which is more convenient for the welder to operate.

In one embodiment, the material of the first flange 41 is steel, which has the advantage that the first flange 41 is welded to the nozzle 10, and the housing 1 of the compressor 100 is usually made of steel to provide sufficient strength, so that the first pipe 401 can be welded to the nozzle 10 well, thereby ensuring the welding quality.

Referring to fig. 5 and 7, in one embodiment, the pipe body 40 includes a first pipe member 401 and a second pipe member 402 coaxially connected, a first end 405 of the pipe body 40 is formed on the first pipe member 401, a second end 406 of the pipe body 40 is formed on the second pipe member 402, the first pipe member 401 is made of steel, and at least an inner surface and an outer surface of the second pipe member 402 are made of copper. This has the advantage that the copper material of the second tube 402 ensures good brazing quality between the inner connecting tube 3 (please refer to fig. 2) and the second tube during the specific use, so that the amount of the copper material in the tube body 40 can be reduced, and the material cost can be reduced.

In one embodiment, the material of the second flange 42 is also steel, and the first flange 41, the second flange 42 and the first pipe 401 are integrally formed, as shown in fig. 6, and may be specifically integrally stamped and formed.

Optionally, the second pipe 402 is made of copper material, or the second pipe 402 includes a steel layer as a main body and two copper layers (both not shown) formed on the inner surface and the outer surface of the steel layer by electroplating; still alternatively, the second tube 402 may include at least three copper layers and at least two steel layers, forming a composite structure in an arrangement where the steel layers are located between two adjacent copper layers.

The inner diameter of the first pipe member 401 may be larger than the outer diameter of the second pipe member 402, one end of the second pipe member 402 extends into the first pipe member 401, and the other end serves as the second end 406 of the pipe body 40, as shown in fig. 5, in which case a solder ring, such as a silver solder ring, may be provided between the inner circumferential surface of the first pipe member 401 and the outer circumferential surface of the second pipe member 402; alternatively, in other embodiments, the outer diameter of the first pipe member 401 may be smaller than the inner diameter of the second pipe member 402, one end of the first pipe member 401 protrudes into the second pipe member 402, and the other end serves as the first end 405 of the pipe body 40, in which case a solder ring may be provided between the outer circumferential surface of the first pipe member 401 and the inner circumferential surface of the second pipe member 402. Then, the first pipe member 401 and the second pipe member 402 are placed in a furnace, and the solder ring is melted by the high temperature in the furnace, and the solder (the areas filled with the black solid pattern in fig. 1 to 5 all represent the solder) is filled between the first pipe member 401 and the second pipe member 402 to firmly and hermetically connect the two, as shown in fig. 5.

On the basis, for the second pipe 42 made of non-all-copper material, the thickness of the copper layer on the inner surface and the outer surface should be greater than or equal to 18 microns, so that the copper layer can sufficiently protect the steel material inside during the welding process of the first pipe 41 and the second pipe 42, and the welding effect between the two can be ensured.

The first pipe member 401 and the second pipe member 402 are in clearance fit in the radial direction, and the melted solder can flow to fill between the clearances and even overflow from the ends, as shown in fig. 5, and the solder overflows and solidifies from the end of the second pipe member 402 located inside the first pipe member 401 and overflows and solidifies from the protruding end of the second pipe member 402. In this way, a strong and sufficiently sealed welded connection between the first tube member 401 and the second tube member 402 can be achieved.

Referring to fig. 6, in the present embodiment, an inner peripheral surface of the first tube 401 starts to form an inward recessed step 4010 at an end portion away from the first flange 41, and the second tube 402 is disposed at the inward recessed step 4010, so that after the first tube 401 and the second tube 402 are welded, an inner surface of the tube body 40 can be kept substantially smooth, and the second tube 402 does not protrude excessively. Of course, the length of the female step 4010 is less than the length of the second tubular member 402 to allow the second tubular member 402 to partially protrude.

Referring to fig. 5 and 7, in one embodiment, the end of the second pipe 402 extending out of the first pipe 401, i.e. the second end 406 of the pipe body 40, is arranged in a divergent manner. This has the advantage that when the first tube 401 and the second tube 402 are welded, the flow of the solder can be limited to a certain extent, so that the solder can be kept at the outer surface of the second tube 402 and can not flow or drip to other positions.

Referring to fig. 1 to 4 in combination with fig. 5 to 7, a compressor 100 according to an embodiment of the present invention includes a housing 1 and a connecting pipe assembly 4 according to the above embodiments, wherein the housing 1 has a pipe orifice 10, and an outer peripheral surface of a first flange 41 of the connecting pipe assembly 4 is welded to a peripheral edge of the pipe orifice 10.

Therefore, to the utility model provides a compressor 100, the welding cost between its mouth of pipe 10 and the connecting pipe subassembly 4 is lower, and welding quality guarantees more easily, can reduce the risk of its inside refrigerant, refrigeration oil etc. by mouth of pipe 10 leakage, guarantees compressor 100's normal work.

Referring to fig. 3 and 4, in one embodiment, a boss 11 protruding outward is formed on the housing 1, the nozzle 10 is formed through the boss 11, and the outer circumferential surface of the first flange 41 is welded to the end periphery of the boss 11. This has the advantages that firstly, the welding operation is facilitated, secondly, the welding position is far away from the components inside the housing 1, such as the cylinder 2, so that the cylinder 2 can be prevented from being influenced by the welding heat, and thirdly, the position arrangement of the components inside the cylinder 2 and the like can be prevented from being influenced by the fact that the first flange 41 partially extends into the pipe orifice 10. In a specific application, the boss 11 may be formed by integrally stretching a part of the material of the housing 1, so that the housing 1 is still of an integral structure, which is beneficial to ensure the overall strength thereof.

Specifically, referring to fig. 1 and fig. 2, the compressor 100 further includes an inner connecting pipe 3 and a cylinder 2 disposed inside the housing 1, wherein one end of the inner connecting pipe 3 extends into the pipe opening 10 until being connected to the air suction port 21 of the cylinder 2, the other end of the inner connecting pipe 3 protrudes out of the second end 406 of the pipe body 40, and the inner connecting pipe 3 and the pipe body 40 are welded to the second end 406 of the pipe body 40, which may be flame brazing. The inner connection pipe 3 is also welded to the elbow 91 of the reservoir 9.

The inner connecting pipe 3 has an outer diameter, an inner diameter, and the like, which are set according to the size of the air inlet 21 of the cylinder 2 and the inner diameter of the connecting pipe assembly 4. For example, as shown in fig. 1 and 2, the inner connecting pipe 3 has an outer diameter and an inner diameter larger than those of the outer end of the outer casing 1, and has a tapered shape as a whole.

Specifically, the outer diameter of the bent pipe 91 is smaller than the inner diameter of the inner connecting pipe 3 at the end of the outer casing 1, the bent pipe 91 extends into the inner connecting pipe 3, and the bent pipe 91 and the inner connecting pipe 3 are welded to each other at the end of the inner connecting pipe 3 located outside the outer casing 1, and flame brazing may be specifically used. In other embodiments, other connection forms between the elbow 91 and the inner connecting pipe 3 are allowed, and this is not particularly limited.

The elbow 91 and the inner connecting pipe 3 are made of copper. Because the refrigerant such as freon and the like in the compressor 100 has corrosiveness, and the copper has better corrosion resistance, the service life of the bent pipe 91 and the inner connecting pipe 3 can be prolonged, and the leakage risk of the refrigerant, the refrigerating oil and the like in the compressor 100 can be further effectively reduced; moreover, the bent pipe 91 and the inner connecting pipe 3, and the inner connecting pipe 3 and the second pipe 42 can ensure good welding quality.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A coupling pipe assembly for coupling with a nozzle formed on a casing of a compressor, comprising:

a pipe body in a hollow form having a first end and a second end disposed along an axial direction of the pipe body; and

a first flange formed on an outer peripheral edge of a first end of the pipe body, an outer peripheral surface of the first flange being arranged to be gradually expanded from the first end to the second end; the outer peripheral surface of the first flange is used for being connected with the periphery of the pipe orifice in a welding mode.

2. The connector tube assembly of claim 1, wherein the generatrix of the outer circumferential surface of the first flange is a straight line, a concave curve, or a convex curve.

3. The connector tube assembly of claim 2, wherein the generatrix is linear and the generatrix forms an angle with the radial direction of the tube body of greater than or equal to 30 °.

4. The connecting tube assembly of claim 1, further comprising a second flange formed on a side of the first flange facing the second end, the second flange having an outer diameter greater than or equal to a maximum outer diameter of the first flange.

5. The connector tube assembly of any one of claims 1-4, wherein the tube body comprises first and second tube members connected coaxially, the first end being formed on the first tube member and the second end being formed on the second tube member; the first flange and the first pipe are integrally formed, the first pipe and the first flange are made of steel, and at least the inner surface and the outer surface of the second pipe are made of copper.

6. The connector tube assembly of claim 5, wherein the material of the second tube member is copper; or copper layers are arranged on the inner surface and the outer surface of the second pipe fitting, and a steel layer is arranged between the two copper layers.

7. The connector tube assembly of claim 5, wherein the first tube member has an inner diameter greater than an outer diameter of the second tube member, the second tube member partially extending into the first tube member, an end of the second tube member extending out of the first tube member being flared; or the outer diameter of the first pipe fitting is smaller than the inner diameter of the second pipe fitting, and the second pipe fitting is partially sleeved on the outer side of the first pipe fitting.

8. A compressor comprising a housing having a nozzle formed thereon, and the connection pipe assembly as recited in any one of claims 1 to 7, wherein an outer circumferential surface of the first flange is welded to a circumferential edge of the nozzle.

9. The compressor of claim 8, wherein the housing defines an outwardly projecting boss, and the nozzle is formed through the boss.

10. The compressor of claim 8, further comprising an inner connection pipe and a cylinder disposed inside the housing, wherein one end of the inner connection pipe extends into the opening and is connected to a suction port of the cylinder, and the other end of the inner connection pipe protrudes from a second end of the connection pipe assembly, and the inner connection pipe is welded to the pipe body at the second end.

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