CN210861838U - Connecting pipe structure and air conditioner - Google Patents
Connecting pipe structure and air conditioner Download PDFInfo
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- CN210861838U CN210861838U CN201921517874.9U CN201921517874U CN210861838U CN 210861838 U CN210861838 U CN 210861838U CN 201921517874 U CN201921517874 U CN 201921517874U CN 210861838 U CN210861838 U CN 210861838U
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Abstract
The utility model provides a connecting pipe structure and an air conditioner, wherein the connecting pipe structure is a necking structure at one end, and a necking structure at the other end is a first-expanding and second-contracting structure, so that when the liquid outlet pipe of a condenser cannot be necking the liquid outlet pipe with the same diameter as the condenser to be matched with a capillary under the technical condition, the matching is realized by selecting a middle pipe diameter pipeline, one end of the middle pipeline is firstly flared to the diameter of the condenser, and then the necking is matched with the condenser; the other end is directly matched with the capillary by spinning and necking. The liquid outlet pipe reduces the pipe diameter promptly, through expanding earlier afterwards shrink mode and condenser cooperation, solves the unable throat of big pipe diameter pipe simultaneously to with the capillary cooperation problem.
Description
Technical Field
The utility model relates to an air conditioner connecting pipe, concretely relates to condenser connecting pipe structure and air conditioner.
Background
Aiming at air-conditioning products, in order to generate the functions of throttling, pressure reduction and the like, a throttling device is arranged between a condenser and a compressor, the throttling device generally comprises a liquid outlet pipe, a capillary pipe and other pipelines, and in order to ensure the air tightness, interfaces between the pipelines are all connected in a welding and sealing mode. Aiming at the pipeline that the condenser connects the liquid outlet pipe and then connects the capillary, the liquid outlet pipe cannot be contracted to be matched with the capillary by the conventional normal equipment, and the design and the processing are difficult.
Aiming at the problem, air conditioner manufacturers generally increase a capillary tube connecting tube between a liquid outlet tube and a capillary tube, but the method increases materials, increases redundant expansion and contraction processes and the like, increases a welding spot, improves the possibility of leakage and blockage of an air conditioning system, and has an unsatisfactory actual effect.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one problem, the utility model provides a pair of connecting pipe structure and air conditioner.
The utility model provides a pair of connecting pipe structure, including first pipe portion, second pipe portion, first pipe portion passes through the bent pipe portion and is connected with second pipe portion, first pipe portion has first end, second pipe portion has the second tip, first pipe portion is connected with the drain pipe of condenser through first end is direct, second pipe portion passes through the second tip and directly is connected with the capillary, wherein, first pipe portion, second pipe portion and bent pipe portion are the integrated into one piece structure. Therefore, the liquid outlet pipe and the corresponding capillary tube connecting pipe are integrally formed by changing the diameter and the processing mode of the copper pipe, so that the effects are improved, the quality is improved and the cost is reduced. One material and one welding point are reduced, the efficiency is improved, and the quality risk is reduced.
Furthermore, the first end portion sequentially comprises a first extending portion, a first gradually expanding portion, a first protruding portion and a first gradually reducing portion along the flowing direction of the working medium in the connecting pipe structure.
Furthermore, the second end portion sequentially comprises a second reducing portion and a second extending portion along the flowing direction of the working medium in the connecting pipe structure.
Furthermore, the outer pipe diameter of the first protruding part is consistent with the inner pipe diameter of the liquid outlet pipe, and the outer pipe diameter of the first protruding part is consistent with the inner pipe diameter of a bell mouth of the liquid outlet pipe. Thereby, when first tip and condenser drain pipe horn mouth are connected, first portion of stretching out inserts inside the condenser drain pipe, too little sufficient cooperation of first gradual expansion portion and first protruding portion and drain pipe horn mouth, wherein, first gradual expansion portion does benefit to stretching into and the wedge chucking of first protruding portion, first gradual expansion portion forms welding space with drain pipe horn mouth edge, thereby do benefit to first gradual expansion portion and drain pipe horn mouth edge welding on the one hand, on the other hand avoids welding to hinder and first pipe portion pipe wall, thereby welding operation convenience has been guaranteed, when welding the gas tightness, the damage of welding thermal stress to first pipe portion pipe wall has been avoided, pipe fitting safety and pleasing to the eye have been ensured.
Further, the inner pipe diameter of the second tapered part is consistent with the outer pipe diameter of the capillary.
Further, first pipe portion, second pipe portion and bent pipe portion have unanimous pipe diameter D, just pipe diameter D satisfies the following formula:
wherein, deltanIs the wall thickness, delta, of said second end portion after neckingn-1Is the wall thickness of the second end portion before necking, DInner partIs a second protrusion inner diameter of the second end portion.
Further, the pipe diameter D also satisfies the following formula:
where ζ is the limiting flare ratio, DExpanding deviceA first lobe tube diameter being the first end.
Further, the wall thickness delta of the second end portion after neckingnNot more than 1.05mm, and the limiting flare rate ζ is not more than 30％。
Preferably, the wall thickness δ before necking said second end portionn_1Greater than 0.5mm and less than 0.9mm, the second extension inner diameter DInner partGreater than 2.4mm and less than 2.8mm, the first lobe tube diameter DExpanding deviceGreater than 9.4mm and less than 9.6 mm. Therefore, the problems of serious burning, partial cracking, pipe orifice deformation and the like during pipeline welding can be avoided, the yield of products is greatly improved, and the quality of the products is guaranteed.
The utility model also provides an air conditioner, including condenser and capillary, the condenser is connected with the capillary through above-mentioned connecting tube structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural view of a connecting tube structure 100 according to the present invention;
fig. 2 is a schematic view of a first end portion 111 of a connecting tube structure 100 according to the present invention from a partial view a;
fig. 3 is a schematic structural view of a capillary tube 200 according to the present invention;
fig. 4 is a schematic structural view of a part of the liquid outlet pipe 520 of the condenser 500 of the present invention.
Description of reference numerals:
100-connecting tube structure, 110-first tube part, 111-first end part, 112-first extension part, 113-first gradually-expanding part, 114-first projection part, 115-first gradually-reducing part, 120-second tube part, 121-second end part, 122-second extension part, 123-second gradually-reducing part, 130-bent tube part, 200-capillary tube, 201-capillary tube interface, 202-capillary tube extension part, 203-capillary tube projection part, 204-capillary tube part, 500-condenser, 510-heat exchange sheet, 520-liquid outlet tube, 521-liquid outlet tube bell mouth.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 1, the utility model provides a pair of connecting pipe structure 100, connecting pipe structure 100 one end and the terminal drain pipe horn mouth 521 lug connection of drain pipe 520 of condenser 500, the capillary interface 201 lug connection of the connecting pipe structure 100 other end and capillary 200, working medium are left from condenser 500, flow through connecting pipe structure 100, flow in capillary 200. Connecting pipe structure 100 has integrated into one piece's first pipe portion 110, bent pipe portion 130 and second pipe portion 120 along the working medium flow direction in proper order, wherein, first pipe portion 110 tip has first end 111, first end 111 has integrated into one piece's first portion of stretching out 112 along the working medium flow direction in proper order, first gradually-expanding portion 113, first protruding portion 114 and first convergent 115, the tip of second pipe portion 120 has second end 121, second end 121 has integrated into one piece's second convergent 123 and second extension 122 along the working medium flow direction in proper order, the tip of first portion of stretching out 112 and second extension 122 has the mouth of pipe that supplies the working medium to flow in and flow out.
Wherein, first end 111 is as shown in fig. 2, drain pipe 520 structure is as shown in fig. 4, during assembly connection, inside first extension 112 of first end 111 inserted drain pipe 520 through drain pipe bell mouth 521, first flaring portion 113 offseted with the necking down of drain pipe bell mouth 521 to can wedge-shaped locking, first protruding portion 114 inserts in drain pipe bell mouth 521, forms the interference fit with the drain pipe bell mouth 521 inner wall under the help of first flaring portion 113. After the first end portion 111 is inserted into the liquid outlet pipe 520, a welding space is formed between the first tapering portion 115 and the edge of the liquid outlet pipe bell-mouth 521, the welding space enables a welding seam area between the connecting pipe structure 100 and the end of the liquid outlet pipe 520 to be lifted away from the outer pipe wall of the first pipe portion 110, a certain welding operation space is provided, damage of welding thermal stress to the outer pipe wall of the first pipe portion 110 is avoided, the welding space formed by the first tapering portion 115 and the edge of the liquid outlet pipe bell-mouth 521 is triangular, deep welding of welding rods is facilitated, accordingly, improvement of welding quality is facilitated, airtightness and yield are ensured, the formed welding seam is flat and unobtrusive in appearance, and the product yield is high and attractive.
As shown in fig. 3, the capillary 200 connected to the other end of the connecting tube structure 100 includes a capillary interface 201, a capillary extension 202, a capillary projection 203, and a capillary tube portion 204. When the capillary 200 is connected to the connecting tube structure 100, the capillary protruding portion 202 is inserted into the second protruding portion 122, the capillary protruding portion 203 abuts against the end of the second protruding portion 122, and the abutting portion of the capillary protruding portion 203 and the end of the second protruding portion 122 is welded and fixed, so that the connection between the capillary 200 and the liquid outlet tube 520 is completed.
Specifically, an embodiment of the utility model is, drain pipe 520 pipe diameter is phi 9.52, and the capillary 200 pipe diameter is phi 2.6, considers that current normal equipment can't cooperate phi 9.52 phi 0.7's drain pipe 500 throat to interior phi 2.6 and capillary 200, and in order to save the capillary takeover of a phi 6 0.6 pipe diameter that increases between drain pipe 520 and capillary 200, sets up the pipeline that connecting pipe structure 100 pipe diameter is D to drain pipe 520 and capillary 200 lug connection.
First pipe portion, second pipe portion and bent pipe portion have unanimous pipe diameter D, just pipe diameter D satisfies the following formula:
wherein, deltanIs the wall thickness, delta, of said second end portion after neckingn-1Is the wall thickness of the second end portion before necking, DInner partIs a second protrusion inner diameter of the second end portion.
Further, the pipe diameter D also satisfies the following formula:
where ζ is the limiting flare ratio, DExpanding deviceA first lobe tube diameter being the first end.
Further, the wall thickness delta of the second end portion after neckingnNot more than 1.05mm, and the ultimate flare rate ζ is not more than 30%.
Preferably, the wall thickness δ before necking said second end portionn-hGreater than 0.5mm and less than 0.9mm, the second extension inner diameter DInner partGreater than 2.4mm and less than 2.8mm, the first lobe tube diameter DExpanding deviceGreater than 9.4mm and less than 9.6 mm. Therefore, the problems of serious burning, partial cracking, pipe orifice deformation and the like during pipeline welding can be avoided, the yield of products is greatly improved, and the quality of the products is guaranteed.
Specifically, the material of the connecting tube structure 100 of the present invention is red copper, the breaking elongation of red copper is 42% -55%, the requirement of the flaring rate below 10mm is less than or equal to 40%, and the requirement of the flaring rate above 10mm is less than or equal to 30%; to facilitate capillary welding, the wall thickness of the pipe to be welded generally requires a wall thickness δn≤1.05mm；
For the second extension 122, the second extension 122 has an inner diameter of 2.6 mm; considering the pipeline strength, the wall thickness of the liquid outlet pipe is 0.7mm, the direct rotary shrinkage inner diameter of the large-diameter pipeline is 2.6mm,
the pipe diameter below 10mm is obtained by considering the actual expansion and contraction mouth measurement, and when the free expansion and contraction mouth without a mandrel is adopted, the ratio of the front wall thickness to the rear wall thickness of the expansion and contraction mouth is in the following relation:
wherein: deltan-h＝0.7mm，DnThe diameter of the second extension 122 pipe, Dn＝2.6+2δn
D is less than or equal to 8.76mm,
for the first end 111, the first protrusion 114 has an outer diameter of 9.52mm, the first protrusion 114 has a length of 21mm, and the first extension 112 has an outer diameter of 8.9 mm; because the cold processing of long flaring is carried out and secondary necking is required, the adjacent tight flaring rates are taken, the first limit flaring rate zeta is less than or equal to 30 percent, and the flaring rate is defined according to
Then
Then
D≥7.32mm
Therefore, copper pipes with a pipe diameter D of more than 7.32mm and less than 8.76mm are preferably selected.
Pipe diameter selection specific examples are compared as follows.
Therefore, in consideration of reducing welding spots, the diameter phi 9.52 x 0.7 is directly reduced to the inner diameter of 2.6mm, the current thermal shrinkage process is adopted, the wall thickness after the reduction is 1.05-1.35 mm, serious burning marks exist, part of the capillary tube cracks during welding, and the capillary tube is difficult to control and easy to burn through because the wall thickness of the capillary tube phi 2.6 is only 0.65mm and the wall thickness difference is too large.
Furthermore, considering the reduction of the pipe diameter, the pipe diameter of phi 7 x 0.6mm is selected for manufacturing according to the current general pipe diameter of the air conditioner, and the result shows that the inner diameter of the necking is 2.6mm without problems, but the outer diameter of the flaring is 9.52mm, the outer diameter of the re-necking is 8.9mm, and the pipe orifice is deformed, cracked, bulged and cracked when the pipe diameter of phi 7mm is expanded to a length of 21mm, and the pipe orifice is basically distorted and deformed when the pipe orifice is 8.9mm outside the re-necking.
Verifying that the connecting pipe structure 100 with phi 7.94mm and 0.7mm, the inner diameter of the second extension part 122 of the connecting pipe structure with D being 7.94mm is 2.6mm, adopting a thermal shrinkage process, and the necking wall thickness is 0.90-0.95 mm, so that the requirement of welding with a capillary pipe with 2.6mm is met, and no problem exists in actual welding; the connecting pipe structure 100 with phi 7.94 x 0.7mm has no problem in expanding the outer diameter by 9.52mm, and then the connecting pipe structure is contracted by 8.9mm in outer diameter, so that a slight bulge exists, and the finished product inspection has no problem after the oil injection quantity and the clamping distance are adjusted.
Thus, the alignment results for each example are as follows:
thus, preferably, the diameter phi 9.52 x 0.7 pipe outlet pipe is changed to the diameter phi 7.94 x 0.7 connecting pipe structure 100; one end of the connecting pipe structure 100 with phi 7.94 is expanded to phi 9.52 and then is contracted to phi 8.9; the other end is directly reduced to inner phi 2.6 by adopting a spinning reducing mode, thereby realizing the integrated molding of the pipeline.
Therefore, the problems of serious burning, partial cracking, pipe orifice deformation and the like during pipeline welding can be avoided, the yield of products is greatly improved, and the quality of the products is guaranteed.
The utility model also provides an air conditioner, including condenser and capillary, the condenser is connected with the capillary through above-mentioned connecting tube structure.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. The utility model provides a connecting pipe structure (100), includes first pipe portion (110), second pipe portion (120), first pipe portion (110) is connected with second pipe portion (120) through bent pipe portion (130), first pipe portion (110) have first end (111), second pipe portion (120) have second end (121), characterized in that, first pipe portion (110) are directly connected with drain pipe (520) of condenser (500) through first end (111), second pipe portion (120) are directly connected with capillary (200) through second end (121), wherein, first pipe portion (110), second pipe portion (120) and bent pipe portion (130) are the integrated into one piece structure.
2. Connection tube structure (100) according to claim 1, wherein the first end portion (111) comprises, in sequence along the direction of flow of the working medium in the connection tube structure, a first protrusion (112), a first diverging portion (113), a first protrusion (114) and a first converging portion (115).
3. Connection tube structure (100) according to claim 1, characterised in that the second end portion (121) comprises in sequence, in the direction of flow of the working medium inside the connection tube structure, a second tapered portion (123) and a second protruding portion (122).
4. The connecting tube structure (100) of claim 2, wherein an outer diameter of the first protrusion (112) is substantially equal to an inner diameter of the outlet tube (520), and an outer diameter of the first protrusion (114) is substantially equal to an inner diameter of an outlet tube bell (521) of the outlet tube (520).
5. Connecting tube structure (100) according to claim 3, characterized in that the second taper (123) has an inner diameter which coincides with the outer diameter of the capillary tube (200).
6. A connecting tube structure (100) according to any of claims 1-5, wherein the first tube part (110), the second tube part (120) and the bent tube part (130) have a uniform tube diameter D satisfying the following formula:
wherein, deltanIs the wall thickness, delta, of the second end (121) after neckingn-1Is the wall thickness of the second end part (121) before necking down, DInner partIs the inner diameter of the second protrusion (122) of the second end portion (121).
7. A connecting tube structure (100) according to claim 6, wherein said tube diameter D further satisfies the following formula:
where ζ is the limiting flare ratio, DExpanding deviceA first protrusion (114) being a tube diameter of the first end (111).
8. Connection tube structure (100) according to claim 7, characterized in that the wall thickness δ after necking of the second end portion (121) isnNot more than 1.05mm, and the ultimate flare rate ζ is not more than 30%.
9. Connection tube structure (100) according to claim 8, characterized in that the wall thickness δ before necking down of the second end portion (121) isn_1Greater than 0.5mm and less than 0.9mm, the second extension (122) inner diameter DInner partGreater than 2.4mm and less than 2.8mm, the first projection (114) having a tube diameter DExpanding deviceGreater than 9.4mm and less than 9.6 mm.
10. An air conditioner comprising a condenser (500) and a capillary tube (200), wherein the condenser (500) is connected to the capillary tube (200) through a connecting tube structure (100) according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921517874.9U CN210861838U (en) | 2019-09-11 | 2019-09-11 | Connecting pipe structure and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921517874.9U CN210861838U (en) | 2019-09-11 | 2019-09-11 | Connecting pipe structure and air conditioner |
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| CN210861838U true CN210861838U (en) | 2020-06-26 |
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| CN201921517874.9U Active CN210861838U (en) | 2019-09-11 | 2019-09-11 | Connecting pipe structure and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513923A (en) * | 2019-09-11 | 2019-11-29 | 宁波奥克斯电气股份有限公司 | A kind of connecting pipe structure and air conditioner |
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- 2019-09-11 CN CN201921517874.9U patent/CN210861838U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513923A (en) * | 2019-09-11 | 2019-11-29 | 宁波奥克斯电气股份有限公司 | A kind of connecting pipe structure and air conditioner |
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