CN100518985C - A pipe expanding device - Google Patents
A pipe expanding device Download PDFInfo
- Publication number
- CN100518985C CN100518985C CNB2007100847484A CN200710084748A CN100518985C CN 100518985 C CN100518985 C CN 100518985C CN B2007100847484 A CNB2007100847484 A CN B2007100847484A CN 200710084748 A CN200710084748 A CN 200710084748A CN 100518985 C CN100518985 C CN 100518985C
- Authority
- CN
- China
- Prior art keywords
- expander
- head
- rod
- ring
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/14—Tube expanders with balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/02—Enlarging
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The present invention relates to pipe-expending device, especially relates to the device preventing the loosing of the pipe head and stick. The pipe expending device of the invention includes: a pipe stick, one end of which is set on the drive apparatus doing straight reciprocating motion, and the other end enters into the inner part of the tube through one end of the pipe to enlarge the tube; a pipe head, whose prolongation is located at the head of the other end and is integrated to the head as a whole body; a pipe ring, whose external diameter is larger than the internal diameter of the tube and the inside diameter is packed outside the prolongation of the head and the stick of the pipe, and is used to enlarge the tube when the other end of the pipe stick enters to the inner part of the tube; furthermore, the prolongation includes: a pipe junction which is connected to the inner part of the other end of the pipe with screw connection; a pipe ring inserting part which is formed between the pipe head and junction of the pipe stick, avoid the screw connection between the inserting part and the pipe stick and the inserting part is used to packing the pipe ring to the external surface.
Description
Technical field
The present invention relates to a kind of pipe expander, relate in particular to and prevent when carrying out the operation of conduit expander that the expander head that is connected in the expander rod from connecting the pipe expander that gets loose.
Background technology
Usually, pipe expander is for inserting external diameter makes conduit greater than the expander ring (ball) of the hard rigid material of catheter diameter internal diameter and external diameter while expanded device in needing the conduit of expander.
Fig. 1 represents existing pipe expander 1.As shown in Figure 1, pipe expander 1 comprises: expander rod 2, one end are incorporated into the drive units such as oil hydraulic cylinder (not shown) that make its advance and retreat, and the other end is used to be inserted in the conduit that needs expander; Be positioned at the expander ring 3 of expander rod 2 other ends; Expander head 4 is used for expander ring 3 is incorporated into expander rod 2.
And the expander head 4 that is used for expander ring 3 is incorporated into expander rod 2 comprises: head 4a, and its diameter phases down towards end, with the insert action of guiding expander rod 2; 4a prolongs and the extension 4b of formation from the head, is used to connect expander rod 2.The whole outer peripheral face of extension 4b forms external screw thread, and the inboard connection slot 2a that forms of the other end of expander rod 2 processes internal thread at connection slot 2a inner surface, and head 4a is formed for inserting and tightens the breakthrough part 4c of mechanism (not shown).
Thus, if put the inner peripheral surface of expander ring 3 at the outer peripheral face of extension 4b, and the extension 4b end that makes head 4a opposition side is positioned under the state of connection slot 2a side expander rod 2 ends, to tighten mechanism (not shown) and be inserted into described breakthrough part 4c rotation expander head 4, then carry out in the process of thread connection at the connection slot 2a of described extension 4b and described expander rod 2, described expander ring 3 be sandwiched between expander head 4 head 4a and expander rod 2 ends and secure bond in the other end of expander rod 2.
And, if under this state, drive described drive unit (not shown) expander rod 2 ends in conjunction with expander ring 3 are inserted in the conduit that needs expander, then by the internal diameter and the external diameter of described expander ring 3 dilating catheters, make that conduit is expanded.
But, this existing pipe expander since be enclosed within expander ring 3 on the expander head 4 extension 4b be by the clamped and secure bond of the screw thread adhesion between expander head 4 extension 4b and the expander rod 2 between expander head 4 head 4a and expander rod 2, therefore following situation takes place when carrying out the expander operation often: make also together rotation of head 4a because of friction takes place for expander ring 3 and head 4a when described expander ring 3 rotations, thereby the thread connection between extension 4b and the expander rod 2 is got loose.At this moment, in the process of carrying out the expander operation, need to carry out various loaded down with trivial details work, promptly confirm the coupled situation of expander head 4 and expander rod 2 at any time, and when the connection of expander head 4 and expander rod 2 gets loose, expander head 4 and expander rod 2 being connected etc. again by tightening mechanism (not shown) rotation head 4a, this causes being undertaken by pipe expander 1 difficulty increasing of conduit expander operation.
And to shown in Figure 4, if conduit has " U " shape crooked position as refrigerator pipes 5 grades that are used for the kind of refrigeration cycle heat exchanger, then conduit directly can be formed for guiding the helix 5a of cold-producing medium motion within it as Fig. 2.When carrying out expander by 1 pair of this refrigerator pipes 5 of described pipe expander, described expander ring 3 is because of being guided easier rotation by this helix 5a, thus because the connection of expander head 4 and expander rod 2 gets loose when making length between expander rod 2 and the head 4a elongated, there is the impaired hidden danger of refrigerator pipes 5.
That is, the heat exchanger that kind of refrigeration cycle adopted of refrigerator or air conditioner comprises: refrigerator pipes 5, this refrigerator pipes 5 are for the conduit of copper material and possess " U " shape bend, to be used to guide cold-producing medium; A plurality of heat exchange fins 6, these a plurality of heat exchange fins 6 make refrigerator pipes 5 connect combination, to increase heat exchange area.This heat exchanger inserts a plurality of heat exchange fins 6 on " U " of refrigerator pipes 5 shape bend top and carries out stacked as shown in Figure 2.
At this, be formed for inserting the through hole 6a of refrigerator pipes 5 on the heat exchange fin 6, the diameter of this through hole 6a is a bit larger tham refrigerator pipes 5 diameters before the expander, to be easy to insert refrigerator pipes 5.As shown in Figure 3, along with refrigerator pipes 5 diameters that are inserted into through hole 6a by described pipe expander 1 expansion, the internal diameter and the external diameter of refrigerator pipes 5 are expanded simultaneously, thereby heat exchange fin 6 carries out interference fit with refrigerator pipes 5.Before the expander of drive unit (not shown) control simultaneously head 4 head 4a can only enter into the U-shaped bend inner surface of refrigerator pipes 5.
But, in the process of the expander operation of carrying out this refrigerator pipes 5, because of the insert action of expander rod 2 makes when between expander ring 3 and refrigerator pipes 5 internal diameters friction taking place, expander ring 3 is easier of the helix 5a rotation that is formed on refrigerator pipes 5 internal diameters, if and along with the length that gets loose between expander rod 2 and the head 4a of expander head 4 is elongated, then as shown in Figure 4, the U-shaped bend inner surface of refrigerator pipes 5 breaks because of the pressure that is subjected to expander head 4 head 4a.
Summary of the invention
The present invention proposes in order to solve aforesaid problem, the pipe expander that its purpose is to provide a kind of connection that prevents expander head and expander rod to get loose.
To achieve these goals, comprise according to pipe expander provided by the invention: the expander rod, one end of this expander rod is arranged on the drive unit that carries out straight reciprocating motion, and the end of the other end by described conduit enters into described catheter interior, to be used for that conduit is carried out expander; The expander head has the head that is positioned at the described expander rod other end and forms as one with described head and be used to connect the extension of described expander rod; Expander ring, its external diameter be greater than the internal diameter of described conduit, and internal diameter is enclosed within the described extension outer peripheral face between described head and the expander rod, is used for when the other end of described expander rod enters into described catheter interior described conduit being carried out expander; And described extension comprises: the expander rod connection part that is connected in described expander rod other end inside with the screw thread combination; Expander ring intussusceptum, this expander ring intussusceptum are formed between described head and the described expander rod connection part, and prevent that it from described expander rod screw thread taking place and combining, to be used for overlapping the above expander ring at its outer peripheral face; Wherein, go into minister's degree greater than described expander ring length along the described expander ring set of the length direction of described expander head, described expander ring rotatably is combined in described expander ring intussusceptum outer peripheral face.
And the external diameter of described expander ring intussusceptum is less than the internal diameter of described expander ring.
And the outer peripheral face of described expander ring intussusceptum forms smooth surface.
And, described conduit comprises the heat exchanger refrigerator pipes that is used to guide cold-producing medium, this refrigerator pipes is inserted into to be had in a plurality of heat exchange fins of diameter greater than the through hole of refrigerator pipes external diameter, is connected in described heat exchange fin with interference fit when expanding its external diameter by described pipe expander.
And described conduit has " U " shape crooked position, and is formed with helix on the described catheter diameter.
Comprise according to pipe expander provided by the invention: the expander rod, an end of this expander rod is arranged on the drive unit that carries out straight reciprocating motion, and the end of the other end by described conduit enters into described catheter interior, to be used for that conduit is carried out expander; The expander head has the head that is positioned at the described expander rod other end and forms as one with described head and be used to connect the extension of described expander rod; Expander ring, its external diameter be greater than the internal diameter of described conduit, and internal diameter is enclosed within the described extension outer peripheral face between described head and the expander rod, is used for when the other end of described expander rod enters into described catheter interior described conduit being carried out expander; And, described extension comprise be inserted into the inner and expander rod connection part that connects with described expander rod of the described expander rod other end and be formed on described head and the excellent connection part of described expander between to be used for overlapping the expander ring intussusceptum of the above expander ring at its outer peripheral face, and go into minister's degree greater than described expander ring length along the described expander ring set of the length direction of described expander head, described expander ring rotatably is combined in described expander ring intussusceptum outer peripheral face.
Description of drawings
Fig. 1 is the cutaway view of the existing pipe expander structure of expression;
Fig. 2 constitutes common the kind of refrigeration cycle refrigerator pipes of heat exchanger and the cutaway view of heat exchange fin structure for expression, the state before the expression refrigerator pipes expander;
Fig. 3 carries out expander for the refrigerator pipes shown in the presentation graphs 2 by pipe expander makes heat exchange fin and refrigerator pipes carry out the cutaway view of the state of interference fit;
Fig. 4 is the cutaway view that utilizes existing pipe expander that refrigerator pipes shown in Figure 2 is carried out the action of expander, the impaired situation of expression refrigerator pipes;
The decomposing schematic representation of the pipe expander structure that Fig. 5 is provided for the foundation preferred embodiment of the present invention;
Fig. 6 is the cutaway view of expression according to the pipe expander structure that the preferred embodiment of the present invention provided;
Fig. 7 carries out the cutaway view of the action of expander to refrigerator pipes shown in Figure 2 according to the pipe expander that the preferred embodiment of the present invention provided for utilization.
Main symbol description: 5 is refrigerator pipes, the 5a helix, and 6 is heat exchange fin, 6a is a through hole, and 10 is pipe expander, and 20 is the expander rod, 21 is connection slot, 21a is an internal thread, and 30 is the expander ring, and 40 is the expander head, 41 is head, 42 is extension, and 42a is an expander rod connection part, and 42b is an expander ring intussusceptum.
The specific embodiment
Below, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in Figure 5 and Figure 6, the pipe expander 10 that provides according to present embodiment comprises: expander rod 20, and these expander rod 20 1 ends are incorporated into the drive units such as oil hydraulic cylinder (not shown) that make its advance and retreat, and the other end is used to be inserted in the conduit that needs expander; Be positioned at the expander ring 30 of expander rod 20 other ends; Expander head 40 is used for expander ring 30 is incorporated into expander rod 20.
And the expander head 40 that is used for expander ring 30 is incorporated into expander rod 20 comprises: head 41, and its diameter phases down towards end, with the insert action of guiding expander rod 20; 41 prolong and the extension 42 of formation from the head, are used to connect expander rod 20.The maximum gauge of described head 41 is also less than the catheter diameter that needs expander, thereby is easy to be inserted into catheter interior.
At this, extension 42 comprises: constitute the expander rod connection part 42a of an end of head 41 opposition side extensions 42, link with expander rod 20 to be used to be inserted into expander rod 20 inner end portion; Constitute the expander ring intussusceptum 42b of the extension 42 between described head 41 and the expander rod connection part 42a, be used for described expander ring 30 is enclosed within its outer peripheral face.Wherein, expander ring intussusceptum 42b along the length h1 of expander head 40 length directions greater than expander ring length h2, therefore finish under the state of connection at expander rod connection part 42a and expander rod 20, the expander ring 30 that is enclosed within described expander ring intussusceptum 42b outer peripheral face can rotate.
It is for when carrying out the expander operation that expander ring intussusceptum 42b adopts this structure, even being inserted into the expander ring 30 of catheter diameter rotates, also can prevent to produce frictional force between expander ring 30 and the head 41, thereby prevent to get loose because of 30 rotations of expander ring cause the connection of expander rod 20 and expander head 40.
Specifically, described expander rod connection part 42a is connected in expander rod 20 1 end inboards with the screw thread combination, expander rod connection part 42a outer peripheral face has external screw thread 42c for this reason, and the expander rod 20 1 ends inboard that connects described expander rod connection part 42a forms connection slot 21, and has internal thread 21a at connection slot 21 inner peripheral surfaces, the external diameter size h3 of described expander ring intussusceptum 42b is less than the internal diameter size h4 of expander ring 30, and the outer peripheral face of expander ring intussusceptum 42b forms smooth surface to prevent that with expander rod 20 screw thread taking place combines.As a reference, symbol 41a is for running through the breakthrough part of head 41 from both sides, and this breakthrough part 41a is used for inserting and tightens mechanism (not shown), makes expander head 40 carry out screw thread with expander rod 20 to combine to be used to rotate expander head 40.
Thus, after expander ring intussusceptum 42b outer peripheral face puts expander ring 30, described expander rod connection part 42a end is being placed under the state of described expander rod 20 connection slots 21 ends, insert in breakthrough part 41a and tighten mechanism's rotation expander head 40, then described expander rod connection part 42a is connected in the connection slot 21 of expander rod 20 with the screw thread combination.
At this moment, owing to forming, the expander ring intussusceptum 42b outer peripheral face that puts expander ring 30 do not have externally threaded smooth surface, and along the expander ring intussusceptum 42b length h1 of the length direction of expander head 40 greater than expander ring 30 length h2, therefore finish under the state of thread connection at expander rod connection part 42a and expander rod 20, the expander ring 30 that is enclosed in expander ring intussusceptum 42b outer peripheral face is in the state that can rotate freely.
Therefore, during by this pipe expander 10 dilating catheters, even be inserted into expander ring 30 rotations in the conduit, expander ring 30 and head 41 can not rub yet, thereby can prevent that expander head 40 from getting loose from expander rod 20, in the process of carrying out the operation of conduit expander, no longer need to confirm at any time the coupled situation of expander head 40 and expander rod 20 thus or connect loaded down with trivial details operations such as expander head 40 and expander rod 20 again, so be easy to more carry out the operation of conduit expander by pipe expander 10 by tightening mechanism (not shown) rotation head 41.
And the pipe expander 10 that this connection that prevents expander head 40 and expander rod 20 gets loose is effective especially when being used for kind of refrigeration cycle with the expander operation of the conduits such as refrigerator pipes 5 of heat exchanger.
The following describes by described pipe expander 10 expansion kind of refrigeration cycle makes refrigerator pipes 5 and heat exchange fin 6 carry out the process of interference fit with the refrigerator pipes 5 of heat exchanger.
For the refrigerator pipes of expanding as shown in Figure 2 by described pipe expander 10 5, driving by described drive unit (not shown) is inserted into inner expander rod 20 from refrigerator pipes 5 tops maximum enters distance and controls, make that the head 41 of described expander head 40 can only enter into the U-shaped bend inner surface of refrigerator pipes 5 before.
Therefore, if driver under this state (not shown) makes the expander rod 20 that is positioned at refrigerator pipes 5 tops be inserted into refrigerator pipes 5 inside, the external diameter of then described expander ring 30 is expanded the internal diameter of refrigerator pipes 5 and external diameter simultaneously and refrigerator pipes 5 is carried out expander, and the mutual interference fit of through hole 6a of refrigerator pipes 5 and heat exchange fin 6 makes heat exchange fin 6 be incorporated into refrigerator pipes 5 securely thus.
At this moment, form on the internal diameter of described refrigerator pipes 5 and be used for guiding the mobile smoothly helix 5a of cold-producing medium, the expander ring 30 that enters into refrigerator pipes 5 inside for refrigerator pipes 5 is carried out expander can be rotated by these helixes 5a guiding, but expander ring 30 described in the pipe expander 10 that provides according to present embodiment is not sandwiched between expander head 40 heads 41 and expander rod 20 ends and fixedly secures, but be enclosed within on the expander ring intussusceptum 42b with the state that can rotate freely, and the length h1 of expander ring intussusceptum 42b is greater than the length h2 of expander ring 30, therefore even the helix of cooled pipe 5 guides and rotates when expander rod 20 enters into refrigerator pipes 5 expander ring 30 is in expansion refrigerator pipes 5 when inner, also be separated from each other (as shown in Figure 7), make the connection that do not rub between the expander ring 30 of rotation and the head 41 and prevent expander head 40 and expander rod 20 get loose because of the influence of expander ring 30 because of expander head 40 heads 41 and expander ring 30.
And, this pipe expander 10 limit the entering apart from before making expander head 40 heads 41 can only enter into the U-shaped bend inner surface of refrigerator pipes 5 time of expander rod 20 by the described drive unit of control (not shown), owing to do not worry making the length between expander head 40 heads 41 and expander rod 20 ends elongated because of described expander head 40 gets loose, the problem of the U-shaped bend that therefore refrigerator pipes 5 can not take place when carrying out refrigerator pipes 5 expander operations or perforation impaired because of expander head 40 heads 41.
In sum, pipe expander provided by the present invention is when carrying out the operation of conduit expander, even be inserted into the expander ring rotation that is used for dilating catheter in the conduit, also, this expander ring can prevent that the expander head from getting loose because of can friction taking place with head, in the process of carrying out the operation of conduit expander, do not need to confirm at any time the coupled situation of expander head and expander rod thus or make loaded down with trivial details operations such as expander head and expander rod connect again, so be easy to carry out the operation of conduit expander more by tightening swivel head portion of mechanism.
And, the pipe expander that this connection that prevents expander head and expander rod gets loose, owing to prevented to become big phenomenon in the distance that takes place in the middle of the operation of conduit expander between expander head portion and the expander rod, therefore when kind of refrigeration cycle is carried out the expander operation with the conduits such as refrigerator pipes of heat exchanger, effective especially because of preventing the impaired problem of refrigerator pipes that expander head portion causes.
Claims (6)
1, a kind of pipe expander is characterized in that comprising: the expander rod, and an end of this expander rod is arranged on the drive unit that carries out straight reciprocating motion, and the end of the other end by conduit enters into described catheter interior, to be used for that described conduit is carried out expander; The expander head has the head that is positioned at the described expander rod other end and forms as one with described head and be used to connect the extension of described expander rod; Expander ring, its external diameter be greater than the internal diameter of described conduit, and internal diameter is enclosed within the described extension outer peripheral face between described head and the expander rod, is used for when the other end of described expander rod enters into described catheter interior described conduit being carried out expander;
And described extension comprises: the expander rod connection part that is connected in described expander rod other end inside with the screw thread combination; Expander ring intussusceptum, this expander ring intussusceptum are formed between described head and the described expander rod connection part, and prevent that it from described expander rod screw thread taking place and combining, to be used for overlapping the above expander ring at its outer peripheral face;
Wherein, go into minister's degree greater than described expander ring length along the described expander ring set of the length direction of described expander head, described expander ring rotatably is combined in described expander ring intussusceptum outer peripheral face.
2. pipe expander according to claim 1 is characterized in that the internal diameter of the external diameter of described expander ring intussusceptum less than described expander ring.
3, pipe expander according to claim 1 is characterized in that the outer peripheral face of described expander ring intussusceptum forms smooth surface.
4, pipe expander according to claim 1, it is characterized in that described conduit comprises the heat exchanger refrigerator pipes that is used to guide cold-producing medium, this refrigerator pipes is inserted into to be had in a plurality of heat exchange fins of diameter greater than the through hole of refrigerator pipes external diameter, is connected in described heat exchange fin with interference fit when expanding its external diameter by described pipe expander.
5, pipe expander according to claim 4 is characterized in that described conduit has " U " shape crooked position, and is formed with helix on the described catheter diameter.
6, a kind of pipe expander is characterized in that comprising: the expander rod, and an end of this expander rod is arranged on the drive unit that carries out straight reciprocating motion, and the end of the other end by conduit enters into described catheter interior, to be used for that described conduit is carried out expander; The expander head has the head that is positioned at the described expander rod other end and forms as one with described head and be used to connect the extension of described expander rod; Expander ring, its external diameter be greater than the internal diameter of described conduit, and internal diameter is enclosed within the described extension outer peripheral face between described head and the expander rod, is used for when the other end of described expander rod enters into described catheter interior described conduit being carried out expander;
And, described extension comprise be inserted into the inner and expander rod connection part that connects with described expander rod of the described expander rod other end and be formed on described head and the excellent connection part of described expander between to be used for overlapping the expander ring intussusceptum of the above expander ring at its outer peripheral face, and go into minister's degree greater than described expander ring length along the described expander ring set of the length direction of described expander head, described expander ring rotatably is combined in described expander ring intussusceptum outer peripheral face.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060027865A KR100715892B1 (en) | 2006-03-28 | 2006-03-28 | A pipe expanding device |
| KR1020060027865 | 2006-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101045249A CN101045249A (en) | 2007-10-03 |
| CN100518985C true CN100518985C (en) | 2009-07-29 |
Family
ID=38270079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100847484A Expired - Fee Related CN100518985C (en) | 2006-03-28 | 2007-02-28 | A pipe expanding device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100715892B1 (en) |
| CN (1) | CN100518985C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947604A (en) * | 2010-08-17 | 2011-01-19 | 湖北三环锻压设备有限公司 | Pendulum-type bidirectional expanding machine |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK200900463A (en) | 2009-04-06 | 2010-10-07 | Davidsen Michael | Pipe expansion machine |
| KR101794953B1 (en) * | 2015-09-30 | 2017-11-07 | 주식회사 위닉스 | Refrigerants pipe expanding apparatus and manufacturing method of refrigerants pipe using thereof |
| KR101879582B1 (en) * | 2015-09-30 | 2018-07-19 | 주식회사 위닉스 | Refrigerants pipe expanding apparatus and manufacturing method of refrigerants pipe using thereof |
| KR101757824B1 (en) | 2016-03-30 | 2017-07-17 | 주식회사 화승알앤에이 | Method for manufacturing double pipe heat exchanger |
| KR20240037103A (en) * | 2022-09-14 | 2024-03-21 | 삼성전자주식회사 | Apparatus and method for manufacturing heat exchanger |
| KR102715510B1 (en) | 2023-11-21 | 2024-10-11 | 지성알미늄주식회사 | Cutting expansion device for integrated capillary pipes with different inner diameters |
| CN117884884B (en) * | 2024-01-24 | 2024-08-06 | 珠海吉泰克物理科技有限公司 | Assembly equipment is arranged to combustor fire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000031980A (en) * | 1998-11-11 | 2000-06-05 | 구자홍 | Structure of bullet for expansion of tube of fin tube type heat exchanger |
-
2006
- 2006-03-28 KR KR1020060027865A patent/KR100715892B1/en not_active IP Right Cessation
-
2007
- 2007-02-28 CN CNB2007100847484A patent/CN100518985C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101947604A (en) * | 2010-08-17 | 2011-01-19 | 湖北三环锻压设备有限公司 | Pendulum-type bidirectional expanding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100715892B1 (en) | 2007-05-08 |
| CN101045249A (en) | 2007-10-03 |
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Granted publication date: 20090729 Termination date: 20190228 |