CN201760682U

CN201760682U - Soldering buffer type binding rod of heat exchanger

Info

Publication number: CN201760682U
Application number: CN2010202448560U
Authority: CN
Inventors: 何金汉
Original assignee: ZHEJIANG JINCHEN SANPU HEAT EXCHANGER CO Ltd
Current assignee: ZHEJIANG JINCHEN SANPU HEAT EXCHANGER CO Ltd
Priority date: 2010-06-29
Filing date: 2010-06-29
Publication date: 2011-03-16
Anticipated expiration: 2020-06-29

Abstract

The utility model discloses a buffer type binding rod which is used for binding and fixing constituent parts of a heat exchanger in a soldering process. The binding rod forms a long strip shape and comprises a binding plate with an outer bottom surface in contact with an edge plate of the heat exchanger, wherein a buffer device is arranged on the binding plate, and a force rod is arranged on the buffer device; and after being bound and fixed, the buffer device is positioned at the outer side of an edge fin, the edge fin connected with an outer flat pipe and the edge plate is correspondingly positioned at the position of a middle fin. In the utility model, outward expansion deformation generated by a core body of the heat exchanger by heating is absorbed by the buffer device, which ensures that the relative displacement between the edge fin and the edge plate is small, thereby the lodging probability of the edge fin is greatly reduced; and the quality of a product is stable, and the yield and the production efficiency of the heat exchanger product can be greatly improved so that the manufacturing cost is reduced.

Description

The soldering buffer-type of heat exchanger is tied up bar

Technical field

The utility model relates to heat exchanger processing equipment, particularly relates to a kind ofly being used to tie up the buffer-type of fixing its building block tying up bar in the heat exchanger brazing process.

Background technology

Heat exchanger claims heat exchanger again, and its purposes is more extensive, for example can be used as condenser, evaporimeter or be used as heat pump etc.Parallel-flow heat exchanger is a kind of compact needle recuperator, comprise a pair of header that is parallel to each other and is separated from each other, the flat tube that some two ends are communicated with and are parallel to each other with the inner chamber of two headers respectively, be arranged on the fin between the adjacent flat tube, and two side plates of fixedlying connected with outside flat tube by fin, the fin that wherein connects outside flat tube and side plate is called the limit wing, and header is provided with some holes that are used to connect flat tube, and the whole heat exchanger in assembling back is flat platy structure.During work, cold-producing medium flows along design direction between header along flat tube, when flowing, carries out heat exchange with the air of blowing over fin.

The manufacturing process of parallel-flow heat exchanger comprises to be inserted the flat tube two ends respectively in the hole of collective's pipe, fin is placed between the adjacent flat tube then, then place and tie up bar in two side plate outsides, it is fixing to use strapping (as steel wire or steel band) or anchor clamps that heat exchanger assembly is tied up along short transverse again, sends into special-purpose soldering oven at last and carries out disposable welding fabrication.

A kind of bar of typically tying up is that cross section is the stock that is the plane around three-back-shaped in the prior art, also has at cross section to be welding or fixing several ears on the three-back-shaped stock outerplanar, and also having cross section in addition is the stock of D font.During use, tie up bar for two and abut against respectively outside the side plate of heat exchanger, tighten up fixing by one or more strapping then by its side.In above-mentioned brazing process, falling wing is the bad main performance (comprise falling the limit wing and fall middle wing) of brazing quality, falls wing and can reduce the number of fins that participates in heat exchange, causes heat exchange property to descend.The one of the main reasons of falling wing is in brazing process, heat exchanger core body is heated and can produces outside dilatancy power F1, and can producing reaction force F2, parts such as strapping, anchor clamps prevent that heat exchanger core body outwards is out of shape, when F2＞F1, fin anti-performance of collapsing under hot conditions reduces, very easily lodging is out of shape, the part is loosening etc., finally under unbalanced external force effect, protrude the core body plane, thereby produce the wing phenomenon, especially under the not high situation of fin crudy, this phenomenon is more obvious.

The most serious to fall limit wing phenomenon again in the middle of this, this is because structurally, the side plate two ends of heat exchanger are not fixed with header, only rely on tying up of strapping to fix between welding front wing and side plate, in soldering oven owing to expand with heat and contract with cold, have bigger relative displacement between limit wing and side plate, make the easier lodging of limit wing, and because strapping (irony) and side plate, the material difference of limit wing (aluminium matter), thermal coefficient of expansion is also different, the coefficient of expansion of aluminium is greater than the coefficient of expansion of iron, the strapping of irony and tie up the power of tying up that bar applies and become big forms stress at limit wing and side plate place and concentrates, and causes limit wing lodging easily, limit wing after the lodging can come off under the gravity effect, promptly falls the limit wing.

Fin is the main heat exchange element of heat exchanger, whether qualified the quality of its welding quality be testing product important indicator, in a single day in welding process, fall limit wing phenomenon, then this heat exchanger reparation of must doing over again, that have even can directly scrap, therefore product percent of pass is fallen the wing phenomenon influences greatlyyer, makes that heat exchanger production efficiency is difficult to improve, and has increased manufacturing cost greatly.

Therefore how avoiding heat exchanger to fall limit wing phenomenon in brazing process, thereby guarantee the heat exchanger product quality, improve heat exchanger production efficiency, reduce manufacturing cost, is the technical problem that those skilled in the art need solution at present badly.

Summary of the invention

The utility model mainly is to solve above-mentioned existing in prior technology technical problem, provides a kind of soldering buffer-type of heat exchanger to tie up bar.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of soldering buffer-type of heat exchanger is tied up bar, be strip, the described bar of tying up comprises outer bottom and the contacted plate of tying up of heat exchanger side plate, tie up and be provided with buffer unit above the plate, be provided with powerful bar above the buffer unit.

As preferably, the described plate of tying up is the U-shaped section bar, and buffer unit is arranged in its cavity; Perhaps described powerful bar is the U-shaped section bar, and buffer unit is arranged in its cavity.

As preferably, the described plate of tying up is made by the aluminium material material, and the plate of tying up that material is identical closely contacts with side plate, thermal deformation unanimity when soldering, and it is very little to form stress at limit wing and side plate place.

As preferably, described powerful bar has the inner chamber of hollow, can farthest save material under the prerequisite that guarantees appearance and size like this, alleviates the weight of tying up bar, for use provides condition more easily.

As preferably, be provided with ribs in the inner chamber of described powerful bar, because elongated structure is in stressed, easy deformation when being heated, and being set, ribs can increase its structural strength, when preventing to use because of stressed, the deformed damaged of being heated, make and tie up the outer bottom of tying up plate in the bar and can accurately contact with the side plate of heat exchanger all the time, help to improve welding quality.

As preferably, the curved transition in the upper surface of described powerful bar, like this strapping (as steel wire or steel band) by powerful bar with heat exchanger assembly when short transverse is tied up fixedly, strapping can be fitted in the arc-shaped upper ends face of powerful bar closely, can tie up more firmly, tie up the back and be difficult for slow pine.

As preferably, described buffer unit is an elastic buffering mechanism, buffer unit can be made of rubber-plastic elastomer, can constitute by the fin of heat exchanger, also can be made of the some springs that are distributed on the base plate, the some springs that constitute buffer unit can also directly be distributed on the inner bottom surface of tying up plate or powerful bar of U-shaped section bar.

Be provided with buffer unit in the cavity of tying up plate or powerful bar of the utility model U-shaped section bar, respectively place one in the heat exchanger two side plates outside during use and tie up bar, the outer bottom of tying up plate is contacted with side plate, use strapping (as steel wire or steel band) to tie up heat exchanger assembly fixing along short transverse again by powerful bar.Buffer unit is in the outside of limit wing like this, and the limit wing that connects outside flat tube and side plate correspondingly has been in the position of middle wing, heat exchanger core body is heated and produces outside dilatancy and be cushioned device and sponge, between limit wing and side plate relative displacement very little, greatly reduce the possibility of limit wing lodging; The plate of tying up that is similarly aluminium material besides closely contacts with side plate, and thermal deformation unanimity when soldering is very little at limit wing and side plate place formation stress, has also further reduced the possibility of limit wing lodging.

The utility model utilizes buffer unit absorption heat exchanger core body to be heated and produces outside dilatancy, can fundamentally avoid in brazing process, falling limit wing phenomenon because of temperature distortion, constant product quality, and can significantly improve the product percent of pass and the production efficiency of heat exchanger, and then reduce manufacturing cost.The utlity model has characteristics such as simple in structure, reasonable in design.

Description of drawings

Fig. 1 is a kind of structural representation of the present utility model;

Fig. 2 is an another kind of structural representation of the present utility model;

Fig. 3 is the third structural representation of the present utility model;

Fig. 4 is a kind of end face structure schematic diagram that is provided with ribs in the powerful bar inner chamber of the utility model;

Fig. 5 is the another kind of end face structure schematic diagram that is provided with ribs in the powerful bar inner chamber of the utility model;

Fig. 6 is a kind of structural representation of the utility model buffer unit;

Fig. 7 is the another kind of structural representation of the utility model buffer unit.

The specific embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: referring to Fig. 1, the utility model is strip, comprises the contacted plate 1 of tying up of outer bottom and heat exchanger side plate, tie up plate 1 and be the U-shaped section bar, its cavity is darker, is provided with buffer unit 3 in the cavity, and powerful bar 2 Lower Halves above the buffer unit 3 also are arranged in the cavity.Referring to Fig. 2, the utility model is strip, comprises tying up plate 1, tie up plate 1 and be the U-shaped section bar, its cavity is more shallow, and buffer unit 3 first halves in the cavity are above the cavity of U-shaped section bar 1, powerful bar 2 integral body above the buffer unit 3 be arranged on U-shaped section bar 1 above.Referring to Fig. 3, the utility model is strip, comprise and tie up plate 1, tie up and be provided with buffer unit 3 above the plate 1, be provided with powerful bar 2 above the buffer unit 3, powerful bar 2 is the U-shaped section bar, and its cavity is more shallow, buffer unit 3 first halves in the cavity are above the cavity of powerful bar 2, tie up plate 1 integral body be arranged on the powerful bar 2 of U-shaped section bar below.

Wherein powerful bar 2 has the inner chamber of hollow, can farthest save material under the prerequisite that guarantees appearance and size like this, alleviates the weight of tying up bar, for use provides condition more easily.Referring to Fig. 4 and Fig. 5, be provided with ribs 5 in the inner chamber of powerful bar 2, ribs 5 can be shaft-like up and down between the side of powerful bar 2 that be supported on, and also can be X-shaped and be supported on up and down between the side of powerful bar 2.Because elongated structure is in stressed, easy deformation when being heated, and being set, ribs can increase its structural strength, because of stressed, the deformed damaged of being heated, the outer bottom of tying up U-shaped section bar in the bar can accurately be contacted all the time with the side plate of heat exchanger when preventing to use, help to improve welding quality.The upper surface 4 curved transition of powerful bar, like this strapping (as steel wire or steel band) by powerful bar with heat exchanger assembly when short transverse is tied up fixedly, strapping can be fitted in the arc-shaped upper ends face of powerful bar closely, can tie up more firmly, and ties up the difficult slow pine in back.

Referring to Fig. 6 and Fig. 7, buffer unit is an elastic buffering mechanism, can constitute by rubber-plastic elastomer, also can constitute by the fin 6 of heat exchanger, perhaps be made of the some springs 7 that are distributed on the base plate 8, the some springs 7 that wherein constitute buffer unit also can directly be distributed on the inner bottom surface of tying up plate 1 or powerful bar 2 of U-shaped section bar.Buffer unit mainly is to be used for absorbing heat exchanger core body to be heated and to produce outside dilatancy, makes that relative displacement is very little between limit wing and side plate, greatly reduces the possibility of limit wing lodging,

At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to the foregoing description, and many distortion can also be arranged.Every foundation technical spirit of the present utility model all should be thought to belong to protection domain of the present utility model to any simple modification, equivalent variations and modification that above embodiment did.

Claims

1. the soldering buffer-type of a heat exchanger is tied up bar, be strip, it is characterized in that the described bar of tying up comprises outer bottom and the contacted plate (1) of tying up of heat exchanger side plate, tie up and be provided with buffer unit (3) above the plate (1), be provided with powerful bar (2) above the buffer unit (3).

2. tie up bar according to the soldering buffer-type of the described heat exchanger of claim 1, it is characterized in that the described plate (1) of tying up is the U-shaped section bar, buffer unit (3) is arranged in its cavity; Perhaps described powerful bar (2) is the U-shaped section bar, and buffer unit (3) is arranged in its cavity.

3. tie up bar according to the soldering buffer-type of claim 1 or 2 described heat exchangers, it is characterized in that the described plate (1) of tying up made by the aluminium material material.

4. tie up bar according to the soldering buffer-type of claim 1 or 2 described heat exchangers, it is characterized in that the inner chamber that described powerful bar (2) has hollow.

5. tie up bar according to the soldering buffer-type of the described heat exchanger of claim 4, it is characterized in that being provided with ribs (5) in the inner chamber of described powerful bar (2).

6. tie up bar according to the soldering buffer-type of claim 1 or 2 described heat exchangers, it is characterized in that the curved transition in upper surface (4) of described powerful bar (2).

7. tie up bar according to the soldering buffer-type of claim 1 or 2 described heat exchangers, it is characterized in that described buffer unit (3) is an elastic buffering mechanism.

8. tie up bar according to the soldering buffer-type of the described heat exchanger of claim 7, it is characterized in that described buffer unit (3) is made of rubber-plastic elastomer or constitute or constitute by the some springs (7) that are distributed on the base plate (8) by the fin (6) of heat exchanger.

9. the soldering buffer-type of described heat exchanger is tied up bar according to Claim 8, it is characterized in that some springs (7) of described formation buffer unit (3) directly are distributed on the inner bottom surface of tying up plate (1) or powerful bar (2) of U-shaped section bar.