CN202614071U

CN202614071U - Heat exchanger

Info

Publication number: CN202614071U
Application number: CN 201220112741
Authority: CN
Inventors: 葛方根
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2012-03-22
Filing date: 2012-03-22
Publication date: 2012-12-19
Anticipated expiration: 2022-03-22

Abstract

The utility model discloses a heat exchanger. The heat exchanger comprises a collecting pipe and a heat exchanging pipe arranged on the collecting pipe, an end cap is arranged on the end portion of the collecting pipe, and a location mechanism capable of preventing the end cap from rotating is arranged between the end cap and the collecting pipe. By arranging the location mechanism between the end cap and the collecting pipe, in the process of installing the end cap, the location mechanism can be used to pre-locate an installation position of the end cap; and in the process of placing the heat exchanger into a furnace to for brazing, the end cap can not deflect relatively even being affected by high-temperature and gravity with the help of the location mechanism, consequently installation accuracy of refrigerating fluid pipes is improved, production uniformity of heat exchangers is improved and heat exchanging performance of products is improved.

Description

A kind of heat exchanger

Technical field

The utility model relates to a kind of heat exchanger, especially a kind of heat exchanger that is used for family, market or air conditioning for automobiles.

Background technology

With reference to Fig. 1; Existing heat exchanger comprises header 01 and heat exchanger tube 02, and the end of header 01 utilizes end cap 03 to seal; The cold-producing medium that feeds is dispensed in each heat exchanger tube 02 by header 01; The coolant conduits 04 that is used to feed cold-producing medium utilizes end cap 03 to fix usually, promptly on end cap 03, through hole is set, and coolant conduits gets into header 01 through through hole.Refrigerant outlet flows to and the heat exchange property of the position heat exchanging device in header influences very big; Therefore the fixed position of coolant conduits just seems very important, and in the prior art, end cap just contacted along week before welding with header; When putting into furnace brazing; Owing to receive high temperature and gravity effect, relatively rotate easily between end cap and the header, the through hole on the end cap departs from former design attitude; Cause the installation site and the former design attitude of coolant conduits to take place to depart from, influence the heat exchange effect.

Summary of the invention

The utility model problem to be solved just provides a kind of heat exchanger, and end cap and the header Shi Buhui that cooperatively interacts produces deflection, thereby improves the installation accuracy of coolant conduits, improves the heat exchange property of product.

For solving the problems of the technologies described above; The utility model adopts following technical scheme: a kind of heat exchanger; Comprise header and be installed in the heat exchanger tube on the said header, said header end is provided with end cap, is provided with the location structure that prevents that end cap from rotating between said end cap and the said header.

Further, said location structure comprises projection that is located at said end cap edge and the draw-in groove that is located at said header pipe end, and said projection embeds in the said draw-in groove.

Further, said location structure comprises draw-in groove that is located at said end cap edge and the projection that is located at said header pipe end, and said projection embeds in the said draw-in groove.

Further, said location structure comprise first groove that is located at said end cap edge, be located at second groove of said header pipe end and be installed on said first groove and said second groove in buckle.

Further, the two ends of said buckle are provided with limited block.

Further, said limited block axially or circumferentially is provided with along said header.

Further, said location structure comprises first locating hole that is located at said end cap edge, is located at second locating hole of said header pipe end and is installed on the alignment pin between said first locating hole and second locating hole.

Further, said end cap comprises the end cap body and is located at the ring-type weld part on the said end cap body that said location structure is located between said ring-type weld part and the said header.

Further, said end cap is provided with the through hole that connects coolant conduits.

The beneficial effect of the utility model: between end cap and header, location structure is set, when end cap is installed, through the installation site pre-determined bit of location structure to end cap; Heat exchanger is put into the furnace brazing process, under the effect of location structure, even end cap receives high temperature and gravity effect; Relative deflection can not take place; Thereby improved the installation accuracy of coolant conduits, improved the uniformity that heat exchanger is produced, improved the product heat exchange property; In addition,, also can guarantee the efficient weld area between end cap and the header, improve the welding quality at heat exchanger end cap position through the installation site pre-determined bit of location structure to end cap.

Description of drawings

Below in conjunction with accompanying drawing the utility model is done further explanation:

Fig. 1 is the structural representation of existing heat exchanger;

Fig. 2 is the structural representation of the utility model embodiment one;

Fig. 3 is the structural representation of end cap among the embodiment one;

Fig. 4 is the structural representation of header among the embodiment one;

Fig. 5 is the structural representation of the utility model embodiment two;

Fig. 6 is the assembling sketch map of embodiment two;

Fig. 7 is another preferred structure of buckle among the embodiment two;

Fig. 8 is the structural representation of the utility model embodiment three;

Fig. 9 is the assembling sketch map of embodiment three;

Figure 10 is another preferred structure of embodiment three.

The specific embodiment

With reference to Fig. 2, a kind of heat exchanger comprises header 1 and is installed in the heat exchanger tube 2 on the header 1; Header 1 end is provided with end cap 4, and end cap 4 is provided with the through hole 42 that connects coolant conduits 3, and coolant conduits 3 inserts in the header 1 through through hole 42; Have refrigerant outlet on the coolant conduits 3, the heat exchange property influence of the refrigerant outlet flow direction and the position heat exchanging device in header 1 is very big, if through hole 42 departs from former design attitude; Will cause the installation site and the former design attitude of coolant conduits 3 to take place to depart from, just make refrigerant outlet flow to and change, reduce heat exchanger performance; The utility model is provided with the location structure that prevents that end cap 4 from rotating between end cap 4 and header 1, through the installation site pre-determined bit of location structure to end cap 4, heat exchanger is put into the furnace brazing process; Under the effect of location structure; Even end cap 4 receives high temperature and gravity effect, relative deflection can not take place yet, thereby improve the installation accuracy of coolant conduits 3.

Explain the characteristics of the utility model below in conjunction with concrete embodiment:

With reference to Fig. 2-4; Embodiment one; Location structure comprises projection 41 that is located at end cap 4 edges and the draw-in groove 11 that is located at header 1 pipe end, and projection 41 sizes match with draw-in groove 11 sizes, during assembling end cap 4; Projection 41 snaps in the draw-in groove 11, utilizes the blocking of 11 pairs of projections 41 of draw-in groove to reach the purpose that prevents that end cap 4 from circumferentially rotating.Projection 41 can be cuboid or cylinder; Generally speaking, end cap 4 edges are provided with 41, two projection 41 symmetric arrangement and one-body molded with end cap 4 of two projections; Draw-in groove 11 can be the breach on the header 1 pipe end inwall, also can connect the notch of header 1 tube wall.Assemble effect preferably for arriving, the width K of projection 41 and the D outer diameter of header 1 are answered As soon as possible Promising Policy: 0.02≤K/D≤0.25, and the degree of depth t of projection 41 is the material thickness of end cap 4.The effect equivalents, projection 41 can be arranged on the header 1 pipe end inwall, and draw-in groove 11 is arranged on end cap 4 edges, all the other structures are identical with such scheme.

With reference to Fig. 5-7; Embodiment two: location structure comprise end cap 4 edges first groove 44, header 1 pipe end second groove 12 and be installed on first groove 44 and second groove 12 in buckle 5, utilize relatively rotating to reach and prevent the circumferentially purposes of rotations of end cap 4 between buckle 5 restrictions first grooves 44 and second groove 12.With embodiment one; Buckle 5 sizes should match with groove size; Between do not have the gap; Assemble effect preferably for arriving, the width K and header 1 D outer diameter of first groove 44 and second groove 12 are answered As soon as possible Promising Policy: 0.02≤K/D≤0.25, and the material thickness of the degree of depth t of first groove 44 and second groove 12>=buckle 5.Difference and embodiment one: because buckle 5 is separate parts; Put into the furnace brazing process at heat exchanger; Also may produce the skew or come off, be provided with limited block 51 at the two ends of buckle 5, after buckle 5 snaps in first groove 44 and second groove 12 for this reason; Utilize limited block 51 and header 1 tube wall, limited block 51 to be fastened, prevent buckle 5 skews or come off with end cap 4 edges.With reference to Fig. 6, limited block 51 can axially be provided with along header 1, is the vertical bar shape, with reference to Fig. 7, or circumferentially is provided with along header 1, is the arc strip.

With reference to Fig. 8-10; Embodiment three: location structure comprise end cap 4 edges first locating hole 45, header 1 pipe end second locating hole 13 and be installed on first locating hole 45 and second locating hole 13 between alignment pin 6, principle is with reference to embodiment two: utilize relatively rotating to reach and prevent the circumferentially purposes of rotations of end cap 4 between alignment pin 6 restrictions first locating holes 45 and second locating hole 13.What be different from embodiment two is: present embodiment utilizes the hole to replace groove, utilizes alignment pin 6 to replace buckle 5, and alignment pin 6 can insert from second locating hole 13 of header 1 sidewall, also can insert from first locating hole 45 at end cap 4 edges; First locating hole 45 and second locating hole 13 can adopt circular hole, elliptical aperture or square hole etc., and alignment pin 6 shapes are made corresponding change.In addition, first locating hole 45 can be the identical hole of shape size with second locating hole 13, and first locating hole 45 as shown in Figure 9 is the identical circular hole in aperture with second locating hole 13, and alignment pin 6 at this moment is a straight pin; First locating hole 45 can also be the identical hole that varies in size of shape with second locating hole 13; Shown in figure 10; First locating hole 45 and second locating hole 13 are circular hole; But the aperture is different, and the sectional area S1 of first locating hole 45 is less than the sectional area S3 of second locating hole 13, and at this moment alignment pin 6 is the straight pins that have ladder; First locating hole 45 can also be the different holes that vary in size of shape with second locating hole 13, and other fit form details no longer one by one.With the circular hole is example, assembles effect preferably for arriving, and the sectional area S1 of first locating hole 45 and the sectional area S2 of header 1 answer As soon as possible Promising Policy: 0.0005≤S1/S2≤0.3.

In the foregoing description, end cap 4 has comprised end cap body 40 and ring-type welding body 41, and ring-type welding body 43 extends axially along header 1; Can increase the bonding area between end cap 4 and the header 1, thereby improve the weld strength of end cap 4, the location structure of the foregoing description is arranged between ring-type welding body 43 and the header 1; But those skilled in the art should know end cap includes but not limited to this a kind of structure; According to welding requirements, the edge of end cap 4 can design structures such as flange, flanging, further increases bonding area; Location structure is made adaptations and is got final product, and is not described further.

Through the foregoing description, the purpose of the utility model is by in full force and effect having reached.But the embodiment of the utility model includes but not limited to the content described in the accompanying drawing and the top specific embodiment, does not anyly depart from the function of the utility model and the modification of structural principle all will be included in the scope of claims.

Claims

1. a heat exchanger comprises header and is installed in the heat exchanger tube on the said header, and said header end is provided with end cap, it is characterized in that: be provided with the location structure that prevents that end cap from rotating between said end cap and the said header.

2. a kind of heat exchanger as claimed in claim 1 is characterized in that: said location structure comprises projection that is located at said end cap edge and the draw-in groove that is located at said header pipe end, and said projection embeds in the said draw-in groove.

3. a kind of heat exchanger as claimed in claim 1 is characterized in that: said location structure comprises draw-in groove that is located at said end cap edge and the projection that is located at said header pipe end, and said projection embeds in the said draw-in groove.

4. a kind of heat exchanger as claimed in claim 1 is characterized in that: said location structure comprise first groove that is located at said end cap edge, be located at second groove of said header pipe end and be installed on said first groove and said second groove in buckle.

5. a kind of heat exchanger as claimed in claim 4 is characterized in that: the two ends of said buckle are provided with limited block.

6. a kind of heat exchanger as claimed in claim 5 is characterized in that: said limited block axially or circumferentially is provided with along said header.

7. a kind of heat exchanger as claimed in claim 1 is characterized in that: said location structure comprises first locating hole that is located at said end cap edge, is located at second locating hole of said header pipe end and is installed on the alignment pin between said first locating hole and second locating hole.

8. a kind of heat exchanger as claimed in claim 1 is characterized in that: said end cap comprises the end cap body and is located at the ring-type weld part on the said end cap body that said location structure is located between said ring-type weld part and the said header.

9. a kind of heat exchanger as claimed in claim 1 is characterized in that: said end cap is provided with the through hole that connects coolant conduits.