CN211346483U - Heat exchanger - Google Patents

Abstract

The utility model relates to a heat exchanger includes first body and second body at least to and connect the elbow between first body end and second body head end, the elbow is connected with first body, second body reducing, and the elbow head end inserts the first weld zone of the terminal port formation elbow of first body and first body, and the elbow end inserts the second weld zone of second body head end port formation elbow and second body. The heat exchanger can save 3-4% of elbow manufacturing materials; simultaneously the utility model discloses in use many rings to weld the ring and replace jagged single ring to weld the ring, can less solder use, improve welding quality simultaneously, reduce rosin joint, weld hourglass scheduling problem.

Description

Heat exchanger

Technical Field

The utility model relates to a heat transfer technical field especially physically relates to a heat exchanger.

Background

According to statistics, the copper pipe for the air conditioner accounts for about 28% of the annual output of copper pipes in China, and copper is a scarce resource. With the development of air conditioners towards energy conservation and material conservation, the reduction of copper material usage of the air conditioners is an important subject in the air conditioner industry. The air-conditioning heat exchanger is generally formed by matching a U-shaped pipe and a U-shaped elbow with the same pipe diameter. In the prior art, a U-shaped elbow adopts a single-ring welding ring, the welding ring has a gap, a welding seam has a pit after automatic welding, the hidden danger of insufficient weld penetration exists, and system leakage is easily caused.

Disclosure of Invention

In view of this, the utility model relates to a heat exchanger includes first body and second body at least to and connect the elbow between first body end and second body head end, the elbow is connected with first body, second body reducing, and the elbow head end inserts the first weld zone of the terminal port formation elbow of first body and first body, and the elbow end inserts the second weld zone of second body head end port formation elbow and second body. The heat exchanger can save 3% -4% of elbow manufacturing materials while ensuring the normal work of the heat exchanger, simultaneously improve the welding quality, reduce the problems of insufficient solder, solder leakage and the like, reduce the use of solder and save the cost.

The utility model provides a heat exchanger processing technology for be connected between heat exchanger elbow and the body, its characterized in that: the inner and outer diameters of the elbow and the inner and outer diameters of the corresponding end of the pipe body connecting end are reduced and are smaller than the outer diameter of the main body section of the pipe body, and reducing connection and welding between the elbow of the heat exchanger and the pipe body are realized. Compared with the prior processing technology, the elbow processing material can be saved by 3-4% under the condition of ensuring the heat exchange performance to be unchanged.

The utility model provides a heat exchanger processing technology selects elbow that main part diameter ratio body main part diameter is little to be connected and the welding with the body reducing together, guarantees the leakproofness of body and elbow.

Further optionally, the weld is an arc trajectory weld. The length of a welding ring path is reduced, welding flux is saved, and welding cost is reduced.

Further optionally, the arc-shaped track welding is multi-circle spiral welding, and because the multi-circle welding rings are thin, the melting speed is high, and no notch exists, the welding quality can be improved, and the problems of insufficient solder, solder leakage and the like are reduced.

Further optionally, the heat exchanger elbow and the pipe body are both copper pipes, so that the heat exchanger is guaranteed to have good heat conduction performance.

The utility model provides a heat exchanger includes first body and second body at least to and connect the elbow between first body end and second body head end, wherein, the elbow is connected with first body, second body reducing, just the elbow head end inserts the terminal port of first body and forms the first weld zone of elbow and first body, the elbow end inserts second body head end port and forms the second weld zone of elbow and second body.

Further optionally, the outer diameter of the elbow main body is smaller than the outer diameter of the first pipe main body and the outer diameter of the second pipe main body respectively; the outer diameter of the head end of the elbow is smaller than the inner diameter of the end port of the first pipe body, and the outer diameter of the tail end of the elbow is smaller than the inner diameter of the end port of the head end of the second pipe body.

Further optionally, the weld formed by the head end of the elbow and the end port of the first pipe body in the first weld area and the weld formed by the tail end of the elbow and the end port of the second pipe body in the second weld area are arc-shaped track welds.

Further optionally, the arc track weld is a multi-turn spiral weld.

Further optionally, a flared cup is formed at each of the end port of the first pipe body and the end port of the second pipe body, and the welding end connecting section is a contact portion between a lower portion of the elbow welding ring and the cup portion of the first pipe body or the second pipe body. When the outer diameter of the elbow is reduced, the outer diameter of the flaring cup mouth of the pipe body is synchronously reduced, the risk of cracking of the cup mouth is reduced, and the welding leakage rate of the elbow is reduced.

Further optionally, the elbow is an isodiametric tube. The reduction of the inner diameter and the outer diameter of the elbow refers to the simultaneous reduction of the inner diameter and the outer diameter of the elbow as a whole, and the elbow with the reduced inner diameter and outer diameter is still the equal-diameter pipe at the moment.

Further optionally, the elbow is a copper pipe. And the good heat exchange performance of the heat exchanger is ensured.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.

FIG. 1 is a schematic structural view of a heat exchanger using a multi-turn spiral weld ring reducing structure;

FIG. 2 is a schematic view of a multi-turn spiral welded end connection segment;

FIG. 3 is a schematic top view of a multi-turn spiral welded weld ring;

FIG. 4 is a schematic view of a weld structure on a multi-turn spiral weld ring structure.

1-a first tube; 11-the end of the first tube; 12-a first tubular body; 2-a second tube; 21-the head end of the second pipe body; 22-a second tubular body; 3-bending the pipe; 31-head end of elbow; 32-elbow ends; 33-elbow body; 40-a first welding zone; 41-a second welding zone; 42-welding ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two, but does not exclude the presence of at least one.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

The utility model relates to a heat exchanger includes first body and second body at least to and connect the elbow between first body end and second body head end, the elbow is connected with first body, second body reducing, and the elbow head end inserts the first weld zone of the terminal port formation elbow of first body and first body, and the elbow end inserts the second weld zone of second body head end port formation elbow and second body. The welding quality is improved and the cost is reduced while the heat exchange function is ensured. The invention is elucidated below with reference to specific example embodiments.

Example 1

Referring to fig. 1-4, this embodiment provides a heat exchanger, the connection between the elbow 3 and the pipe body is processed by selecting the elbow 3 with a smaller diameter than the main diameter of the pipe body, and then connecting and welding the elbow 3 and the pipe body in different diameters.

The heat exchanger at least comprises a first pipe body 1, a second pipe body 2 and an elbow 3 connected between the tail end 11 of the first pipe body and the head end 21 of the second pipe body, wherein a heat exchange medium in the heat exchanger flows in from the head ends of the pipe bodies and/or the elbow and flows out from the tail ends of the pipe bodies and/or the elbow; the elbow 3 is connected with the first pipe body 1 and the second pipe body 2 in a reducing way, the head end 31 of the elbow is inserted into the end 11 of the first pipe body to form the elbow 3 and the first welding area 40 of the first pipe body 1, and the tail end 32 of the elbow is inserted into the end 21 of the second pipe body to form the elbow 3 and the second welding area 41 of the second pipe body 2. The heat exchange medium in the heat exchanger flows in from the head end of the first pipe body, flows to the tail end 11 of the first pipe body through the first pipe body 12, enters the head end 31 of the elbow, flows to the tail end 32 of the elbow through the elbow body 33, further enters the head end 21 of the second pipe body, flows through the second pipe body 22, and flows out from the tail end of the second pipe body.

Preferably, the elbow main body 33 has an outer diameter smaller than the outer diameter of the first pipe main body 12 and the outer diameter of the second pipe main body 22, respectively; the outer diameter of the head end 31 of the elbow is smaller than the inner diameter of the end 11 of the first pipe body, and the outer diameter of the tail end 32 of the elbow is smaller than the inner diameter of the end 21 of the second pipe body. The good heat-conducting property of the heat exchanger is ensured, and the copper material of the elbow can be saved by 3-4% after the inner diameter and the outer diameter of the elbow are reduced.

Preferably, the weld formed by the elbow head end 31 and the first pipe body end 11 port at the first weld zone 40 and the weld formed by the elbow end 32 and the second pipe body head end 21 port at the second weld zone 41 are arc track welds. Preferably, the arc track weld is a multi-turn spiral weld. Specifically, during soldering, the solder is spirally distributed on the outer surface of the head end 31 of the elbow in the first soldering area 40 in a plurality of turns, and is inserted into the tail end 11 of the first pipe body; the solder is spirally distributed on the outer surface of the elbow end 32 in the second welding area 41 in a plurality of turns, and is inserted into the second pipe body head end 21, the elbow 3 or the pipe body is heated to melt the solder, and finally the elbow 3 and the pipe body are integrated into a tightly connected body. Through many circles of spiral welding, reduced the length of welding the ring route, practiced thrift the solder, reduce welding cost, simultaneously because many circles weld the ring 43 thinner, the melting rate is fast, and does not have the breach, can improve welding quality, reduces rosin joint, welds hourglass scheduling problem. After the matched process parameters are improved, the diameter of the solder wire is reduced by 20 to 25 percent; the total cost reduction can reach more than 1800 ten thousand yuan per year.

Preferably, the end 11 of the first pipe and the end 21 of the second pipe form a flared cup, and the welding end connecting section is a contact part of the lower part of the elbow welding ring 43 and the cup part of the first pipe 1 or the second pipe 2. When the outer diameter of the elbow is reduced, the outer diameter of the flaring cup mouth of the pipe body is synchronously reduced, the risk of cracking of the cup mouth is reduced, and the welding leakage rate of the elbow is reduced.

Preferably, the elbow 3 is an equal diameter pipe. The reduction of the inner and outer diameters of the elbow 3 means that the inner and outer diameters of the elbow main body 33, the head end 31 and the tail end 32 are reduced at the same time, that is, the elbow 3 with the reduced inner and outer diameters is still a pipe with equal diameter, which reduces the consumption of copper materials and saves welding flux. Preferably, the elbow 3 is a copper pipe, so that good heat exchange performance of the heat exchanger is ensured.

The utility model provides an above-mentioned heat exchanger embodiment includes first body and second body at least to and connect the elbow between first body end and second body head end, the elbow is connected with first body, second body reducing, and the elbow head end inserts the first weld zone of the terminal port formation elbow of first body and first body, and the elbow end inserts the second weld zone of the terminal port formation elbow of second body and second body. The utility model discloses not only guaranteed the working property of heat exchanger, can also improve welding quality, saved the consumption of copper product and solder, reduceed the cost.

Example 2

For the reducing connection and welding of the elbow and the pipe body, the above embodiment can be replaced, and the inner diameter and the outer diameter of the elbow and the inner diameter and the outer diameter of the corresponding end of the pipe body connecting end can be synchronously reduced by adopting a stretching mode, so that the inner diameter and the outer diameter of the elbow and the inner diameter and the outer diameter of the corresponding end of the pipe body connecting end are in reducing connection (the elbow and the pipe body are integrally) and welded together to realize the reducing connection and welding between the elbow.

To sum up, the utility model relates to a heat exchanger includes first body and second body at least to and connect the elbow between first body end and second body head end, the elbow is connected with first body, second body reducing, and the elbow head end inserts the first weld zone of the terminal port formation elbow of first body and first body, and the elbow end inserts the second weld zone of second body head end port formation elbow and second body. This heat exchanger can guarantee the normal working property of heat exchanger, can also avoid easily resulting in the problem of system leakage because of the welding seam depth of fusion is not enough, simultaneously, reduces the consumption to copper product and solder, practices thrift the cost.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (7)

1. A heat exchanger, at least comprising a first pipe body (1) and a second pipe body (2) and an elbow (3) connected between the end of the first pipe body (11) and the head end of the second pipe body (21), characterized in that: the elbow (3) is connected with the first pipe body (1) and the second pipe body (2) in a reducing mode, the head end (31) of the elbow is inserted into the end (11) of the first pipe body to form a first welding area (40) of the elbow (3) and the first pipe body (1), and the tail end (32) of the elbow is inserted into the end (21) of the second pipe body to form a second welding area (41) of the elbow (3) and the second pipe body (2).

2. The heat exchanger of claim 1, wherein: the elbow (3) further comprises an elbow main body (33) connecting the elbow head end (31) and the elbow tail end (32), and the outer diameter of the elbow main body (33) is respectively smaller than the outer diameter of the first pipe body (12) and the outer diameter of the second pipe body (22); the outer diameter of the head end (31) of the elbow is smaller than the inner diameter of the end opening of the first pipe body (11), and the outer diameter of the tail end (32) of the elbow is smaller than the inner diameter of the end opening of the head end (21) of the second pipe body.

3. The heat exchanger of claim 2, wherein: the welding formed by the elbow head end (31) and the end opening of the first pipe body end (11) in the first welding area (40) and the welding formed by the elbow tail end (32) and the end opening of the second pipe body head end (21) in the second welding area (41) are arc-shaped track welding.

4. The heat exchanger of claim 3, wherein: the arc track welding is multi-turn spiral welding.

5. The heat exchanger of claim 4, wherein: the end opening of the tail end (11) of the first pipe body and the end opening of the head end (21) of the second pipe body form a flaring cup mouth respectively, and the welding end connecting section is a contact part of the lower part of a welding ring (42) of the elbow (3) and the cup mouth part of the first pipe body (1) or the second pipe body (2).

6. The heat exchanger of any one of claims 1 to 5, wherein: the elbow (3) is an equal-diameter pipe.

7. The heat exchanger of any one of claims 1 to 5, wherein: the elbow (3) is a copper pipe.

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