CN210922273U

CN210922273U - Heat exchanger

Info

Publication number: CN210922273U
Application number: CN201921630087.5U
Authority: CN
Inventors: 魏文建; 马文勇; 王冠军; 肖庆; 范毅
Original assignee: Zhejiang Dunan Thermal Technology Co Ltd
Current assignee: Zhejiang Dunan Thermal Technology Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-07-03
Anticipated expiration: 2029-09-27

Abstract

The utility model provides a heat exchanger, include: the flat tubes are arranged at intervals; the first sealing cushion block is positioned at the end part of the flat pipe so as to seal a gap between two adjacent flat pipes, and is provided with a first main body part and an inserting part, wherein the inserting part is arranged on the first main body part, and the first main body part is used for being arranged between two adjacent flat pipes; the flow collecting shell is provided with an opening part, and the end parts of the inserting part and the flat pipe are inserted into the opening part so that the flow collecting shell, the flat pipe and the first sealing cushion block surround a flow collecting channel; wherein, along the extending direction of the first main body part to the inserting part, the inserting width of the inserting part is gradually increased. Through the utility model provides a technical scheme can solve the technical problem that the joint strength of the pressure manifold among the prior art and flat pipe is more weak.

Description

Heat exchanger

Technical Field

The utility model relates to a heat exchanger technical field particularly, relates to a heat exchanger.

Background

At present, the heat exchanger among the prior art generally includes circular pressure manifold and a plurality of flat pipe, is provided with a plurality of spliced eyes on the circular pressure manifold, and a plurality of flat pipes set up with a plurality of spliced eyes one-to-one, and each flat pipe is inserted and is established in corresponding spliced eye, welds afterwards.

In the welding process, the flat pipe is rigidly restrained by the inserting holes of the collecting pipes, and even if the flat pipe is subjected to the pretightening force of the clamp, the flat pipe is hardly displaced in the height direction, particularly the flat pipe close to the end parts of the collecting pipes. Because during the welding, the back can be melted to the surperficial composite bed of flat pipe, and the part solder joint that is close to the spliced eye of pressure manifold will be difficult to the seam, forms the rosin joint easily, influences the resistance to pressure of product.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a heat exchanger to solve the technical problem that the joint strength of the pressure manifold among the prior art and flat pipe is more weak.

In order to achieve the above object, the utility model provides a heat exchanger, include: the flat tubes are arranged at intervals; the first sealing cushion block is positioned at the end part of the flat pipe so as to seal a gap between two adjacent flat pipes, and is provided with a first main body part and an inserting part, wherein the inserting part is arranged on the first main body part, and the first main body part is used for being arranged between two adjacent flat pipes; the flow collecting shell is provided with an opening part, and the end parts of the inserting part and the flat pipe are inserted into the opening part so that the flow collecting shell, the flat pipe and the first sealing cushion block surround a flow collecting channel; wherein, along the extending direction of the first main body part to the inserting part, the inserting width of the inserting part is gradually increased.

Furthermore, the flat tube is provided with an inlet end and an outlet end, the inlet end and the outlet end are arranged at intervals, the inlet end and the outlet end are both positioned at the same end of the flat tube, the opening part comprises a first opening part and a second opening part, the insertion part comprises a first insertion part and a second insertion part, and the first insertion part and the second insertion part are arranged on the first main body part at intervals; the first inserting part and the inlet end are inserted in the first opening part, so that an inlet side flow collecting channel is defined by the flow collecting shell, the inlet end and the first sealing cushion block; the second inserting portion and the outlet end are inserted into the second opening portion, so that the flow collecting shell, the outlet end and the first sealing cushion block enclose an outlet side flow collecting channel.

Further, the heat exchanger still includes: the clamping structure is arranged on the first sealing cushion block, so that when the inserting part is inserted into the opening part, at least part of the flow collecting shell is clamped into the clamping structure.

Further, the joint structure includes the joint groove, and the joint groove sets up on first sealed cushion to when grafting portion inserted and establishes in the opening, make at least part of mass flow casing insert to the joint inslot.

Furthermore, the joint groove is a plurality of, and a plurality of joint groove intervals set up to make at least part of mass flow casing insert to a plurality of joint inslots.

Furthermore, the current collecting shell comprises a main shell and an inserting shell, the inserting shell is arranged on the main shell and comprises a first inserting plate and a second inserting plate, the first inserting plate and the second inserting plate are oppositely arranged at two ends of the main shell, and the first inserting plate and the second inserting plate are arranged at intervals; the clamping grooves are two and are respectively arranged on two sides of the inserting portion, so that when the inserting portion is inserted into the opening portion, the first inserting plate is inserted into one clamping groove, and the second inserting plate is inserted into the other clamping groove.

Furthermore, the mass flow casing includes main casing body and grafting casing, and the grafting casing sets up on the main casing body, along main casing body to the extending direction of grafting casing, the grafting clearance of grafting casing reduces gradually.

Furthermore, the inserting part is provided with a first side face, an arc face and a second side face, the first side face, the arc face and the second side face are sequentially connected, the first side face and the second side face are both used for being attached to the current collecting shell, and the arc face is used for enclosing the current collecting channel with the current collecting shell.

Further, the end portion of the flat pipe is provided with an arc-shaped port, and the arc-shaped port is used for being inserted into the opening portion, so that the flow collecting channel is communicated with the fluid channel in the flat pipe.

Further, the inlet end is a first arc-shaped port, and the first arc-shaped port is used for being inserted into the first opening part, so that the first opening part is communicated with the fluid channel in the flat tube through the first arc-shaped port; and/or the outlet end is a second arc-shaped port which is used for being inserted into the second opening part, so that the second opening part is communicated with the fluid channel in the flat tube through the second arc-shaped port.

Furthermore, the insertion part is trumpet-shaped.

Use the technical scheme of the utility model, through all inserting the tip with the at least part of first gasket and flat pipe and establishing in first opening, can enclose into the mass flow passageway through mass flow casing, a plurality of flat pipe and a plurality of first gasket like this, when welding, flat pipe can not receive the restraint in the direction of height. Specifically, when the heat exchanger crosses the stove welding, flat pipe can freely carry out the layer drop under the pretension effect of anchor clamps, melts the back when flat pipe surface composite bed, can make two tube sheets of flat pipe remain the laminating of pressurized throughout to guarantee that whole solder joints on the tube sheet can be welded together, improved the joint strength of mass flow casing and flat pipe, ensured the resistance to pressure of product. Simultaneously, through the grafting width that makes grafting portion crescent, be convenient for improve the grafting stability of grafting portion grafting in opening department, reduce the probability that grafting portion drops from the opening, can be convenient for further improve welding quality to improve the joint strength of pressure manifold and flat pipe better. Therefore, the technical problem that in the prior art, the connection strength of the collecting pipe and the flat pipe is weak can be solved through the technical scheme provided by the invention.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a front view of a heat exchanger provided according to an embodiment of the present invention;

FIG. 2 shows a view from A-A in FIG. 1;

fig. 3 shows a schematic partial structural view of a heat exchanger provided according to an embodiment of the present invention;

fig. 4 shows a schematic structural diagram of a flat tube of a heat exchanger provided according to an embodiment of the present invention;

fig. 5 shows another schematic structural diagram of a flat tube of a heat exchanger provided according to an embodiment of the present invention;

fig. 6 shows a front view of a flat tube of a heat exchanger provided according to an embodiment of the present invention;

FIG. 7 shows a view along B-B in FIG. 6;

fig. 8 shows a schematic structural view of a first seal cushion block provided according to an embodiment of the present invention;

fig. 9 shows another schematic structural view of a first seal spacer provided according to an embodiment of the present invention;

fig. 10 shows a schematic structural view of a second sealing pad provided according to an embodiment of the present invention; and

fig. 11 shows a schematic structural diagram of a heat exchanger provided according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. flat tubes; 11. an inlet end; 12. an outlet end; 20. a first seal cushion block; 21. a first main body portion; 22. a first insertion part; 23. a second insertion part; 30. a clamping groove; 41. a first manifold housing; 42. a second current collecting housing; 50. a connecting pipe; 60. heat exchange fins; 70. and a second seal cushion block.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 11, the utility model provides a heat exchanger, this heat exchanger include flat pipe 10, first gasket 20 and the current collection casing, and flat pipe 10 is a plurality of, and a plurality of flat pipe 10 intervals set up. First seal cushion 20 is located the tip of flat pipe 10 to seal the clearance between two adjacent flat pipes 10 through first seal cushion 20, first seal cushion 20 has first main part 21 and grafting portion, and the grafting portion sets up on first main part 21, and first main part 21 is used for setting up between two adjacent flat pipes 10. The collecting shell is provided with an opening part, and the end parts of the inserting part and the flat pipe 10 are inserted into the opening part, so that the collecting shell, the flat pipe 10 and the first sealing cushion block 20 form a collecting channel in a surrounding mode. Wherein, along the extending direction from the first main body part 21 to the inserting part, the inserting width of the inserting part is gradually increased. Specifically, grafting portion in this embodiment includes first grafting arch, arc connecting block and second grafting arch, and first grafting arch and second grafting arch set up the both ends at the arc connecting block relatively, and the arc connecting block has the arc terminal surface near the one end of mass flow casing, and first outer wall of first grafting arch and second grafting arch are all used for setting up with the laminating of mass flow casing, and the grafting width of grafting portion indicates the distance between first outer wall and the second outer wall.

Adopt the heat exchanger that this embodiment provided, through all inserting at least part with flat pipe 10's tip with first gasket 20 in first opening, can enclose into the mass flow passageway through mass flow casing, a plurality of flat pipe 10 and a plurality of first gasket 20 like this, when welding, flat pipe 10 can not receive the restraint in the direction of height. Specifically, when the heat exchanger crosses the stove welding, flat pipe 10 can freely carry out the layer drop under the pretension effect of anchor clamps, melts the back when flat pipe 10 surface composite bed, can make two tube sheets of flat pipe 10 remain the laminating of pressurized throughout to guarantee that whole solder joints on the tube sheet can be welded together, improved the joint strength of mass flow casing with flat pipe 10, ensured the resistance to pressure of product.

Simultaneously, through the grafting width that makes grafting portion crescent in this embodiment, be convenient for improve the grafting stability of grafting portion grafting in opening department, reduce the probability that grafting portion drops from the opening, can be convenient for further improve welding quality to improve the joint strength of pressure manifold and flat pipe 10 better. Specifically, adopt this grafting portion can be convenient for and the mass flow casing carries out the straining auto-lock, prevents the condition of torrent casing landing from grafting portion in the core transportation, can restrict the size grow of opening portion under the effect of thermal stress simultaneously and make the too big and condition that makes the capillary effect inefficacy of fit clearance, has further avoided appearing the unstable condition of welding, can effectively play the effect that improves and improve welding quality.

Specifically, the flat pipe 10 in this embodiment has an inlet end 11 and an outlet end 12, the inlet end 11 and the outlet end 12 are arranged at an interval, the inlet end 11 and the outlet end 12 are both located at the same end of the flat pipe 10, the opening portion includes a first opening portion and a second opening portion, the insertion portion includes a first insertion portion 22 and a second insertion portion 23, and the first insertion portion 22 and the second insertion portion 23 are arranged at an interval on the first main body portion 21. The first plug portion 22 and the inlet end 11 are inserted into the first opening portion, so that the collecting case, the inlet end 11, and the first gasket 20 enclose an inlet-side collecting passage. The second inserting portion 23 and the outlet end 12 are inserted into the second opening portion, so that the collecting case, the outlet end 12 and the first gasket 20 enclose an outlet-side collecting passage. Adopt the flat pipe 10 structure that this embodiment provided, can make overall structure overall arrangement compacter, need not all be provided with first gasket 20 at flat pipe 10's both ends simultaneously, the installation and the operation that can be convenient for the staff also can reduce manufacturing cost. Specifically, the collecting shell in this embodiment includes a first collecting shell 41 and a second collecting shell 42, the first collecting shell 41 and the second collecting shell 42 may be both C-shaped open shells, and the first sealing gasket 20 is a T-shaped block.

In order to further improve the stability of the arrangement, the heat exchanger in this embodiment further includes a clamping structure, and the clamping structure is disposed on the first seal cushion block 20, so that when the insertion portion is inserted into the opening portion, at least a portion of the current collecting housing is clamped into the clamping structure.

Specifically, the clamping structure in this embodiment includes a clamping groove 30, and the clamping groove 30 is disposed on the first sealing pad 20, so that when the insertion portion is inserted into the opening portion, at least a portion of the current collecting housing is inserted into the clamping groove 30.

Specifically, the plurality of clip grooves 30 may be provided, and the plurality of clip grooves 30 are disposed at intervals, so that at least a portion of the current collecting case is inserted into the plurality of clip grooves 30. With such an arrangement, the stability of the clamping can be further improved.

Specifically, the current collecting housing in this embodiment includes a main housing and an insertion housing, the insertion housing is disposed on the main housing, the insertion housing includes a first insertion plate and a second insertion plate, the first insertion plate and the second insertion plate are disposed at two ends of the main housing, and the first insertion plate and the second insertion plate are disposed at an interval. The two clamping grooves 30 are respectively arranged on two sides of the inserting portion, so that when the inserting portion is inserted into the opening portion, the first inserting plate is inserted into one clamping groove 30, and the second inserting plate is inserted into the other clamping groove 30. By adopting the arrangement, the clamping shell can be better clamped on the clamping part, so that the clamping stability is better improved.

In this embodiment, the collecting housing includes the main casing body and the plug housing, and the plug housing sets up on the main casing body, along the main casing body to the extending direction of plug housing, the plug clearance of plug housing reduces gradually. In this way, the situation that the plug-in housing falls off from the plug-in part can be better avoided.

Specifically, the inserting part in this embodiment has a first side surface, an arc surface, and a second side surface, the first side surface, the arc surface, and the second side surface are sequentially connected, the first side surface and the second side surface are both used for attaching to the current collecting shell, and the arc surface is used for enclosing with the current collecting shell to form a current collecting channel. With such an arrangement, the blocking effect of the plug portion on the fluid in the collecting channel can be reduced, so that the fluid in the collecting shell can flow smoothly.

In this embodiment, an arc-shaped port may be provided at an end portion of the flat tube 10, and the arc-shaped port is configured to be inserted into the opening portion, so that the collecting channel communicates with the fluid channel in the flat tube 10. By adopting the arrangement, the blocking effect of the fluid in the collecting channel of the plugging unit can be reduced, so that the fluid in the collecting shell can flow smoothly.

Specifically, the inlet end 11 is a first arc-shaped port, and the first arc-shaped port is used for being inserted into the first opening portion, so that the first opening portion is communicated with the fluid channel in the flat tube 10 through the first arc-shaped port. Or, the outlet end 12 is a second arc-shaped port, and the second arc-shaped port is used to be inserted into the second opening portion, so that the second opening portion is communicated with the fluid channel in the flat tube 10 through the second arc-shaped port. Or, the inlet end 11 is a first arc-shaped port, and the first arc-shaped port is used for being inserted into the first opening portion, so that the first opening portion is communicated with the fluid channel in the flat tube 10 through the first arc-shaped port; the outlet end 12 is a second arc-shaped port, and the second arc-shaped port is used for being inserted into the second opening portion, so that the second opening portion is communicated with the fluid channel in the flat pipe 10 through the second arc-shaped port.

In this embodiment, the inlet end 11 is a first arc-shaped port, and the first arc-shaped port is used to be inserted into the first opening portion, so that the first opening portion is communicated with the fluid channel in the flat tube 10 through the first arc-shaped port; the outlet end 12 is a second arc-shaped port, and the second arc-shaped port is used for being inserted into the second opening portion, so that the second opening portion is communicated with the fluid channel in the flat pipe 10 through the second arc-shaped port. With this arrangement, the blocking of the fluid in the first manifold channel by the first arcuate port and the blocking of the fluid in the second manifold housing 42 by the second arcuate port are better avoided.

In this embodiment, the heat exchanger further includes a second sealing gasket 70, end caps disposed at opposite ends of the collecting case to seal the collecting case by the end caps, a connecting pipe 50, and heat exchange fins 60. A second sealing gasket 70 is arranged between the end cap and the flat tube 10, in order to seal the gap between the end cap and the flat tube 10 by means of the second sealing gasket 70. The second sealing pad 70 includes a second main body, a third insertion portion and a fourth insertion portion, the third insertion portion and the fourth insertion portion are both disposed on the second main body, the third insertion portion and the fourth insertion portion are disposed at an interval, the third insertion portion protrudes from the second main body to form a first positioning step, the fourth insertion portion protrudes from the second main body to form a second positioning step, the first collecting case 41 is positioned by the first positioning step, and the second collecting case 42 is positioned by the second positioning step. Along the extending direction of the second main body part to the third plugging part, the plugging width of the third plugging part is gradually increased so as to improve the plugging stability. Along the extending direction of the second main body part to the fourth plugging part, the plugging width of the fourth plugging part is gradually increased so as to improve the plugging stability.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the connection stability of the current collecting shell and the inserting part is enhanced, the current collecting shell is prevented from falling off from the inserting part, the condition that capillary action fails due to overlarge matching gap between the current collecting shell and the inserting part in the welding process is prevented, and the welding quality is improved and improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat exchanger, comprising:

the device comprises a plurality of flat pipes (10), wherein the flat pipes (10) are arranged at intervals;

the first seal cushion block (20) is positioned at the end part of each flat pipe (10) so as to seal a gap between two adjacent flat pipes (10) through the first seal cushion block (20), the first seal cushion block (20) is provided with a first main body part (21) and an insertion part, the insertion part is arranged on the first main body part (21), and the first main body part (21) is used for being arranged between two adjacent flat pipes (10);

the flow collecting shell is provided with an opening part, and the end parts of the inserting part and the flat pipe (10) are inserted into the opening part so that the flow collecting shell, the flat pipe (10) and the first sealing cushion block (20) enclose a flow collecting channel;

the inserting width of the inserting part is gradually increased along the extending direction from the first main body part (21) to the inserting part.

2. The heat exchanger according to claim 1, wherein the flat tube (10) has an inlet end (11) and an outlet end (12), the inlet end (11) and the outlet end (12) are arranged at intervals, the inlet end (11) and the outlet end (12) are both located at the same end of the flat tube (10), the opening portion comprises a first opening portion and a second opening portion, the plug portion comprises a first plug portion (22) and a second plug portion (23), and the first plug portion (22) and the second plug portion (23) are arranged at intervals on the first main body portion (21); the first inserting part (22) and the inlet end (11) are inserted into the first opening part, so that the collecting shell, the inlet end (11) and the first sealing cushion block (20) form an inlet side collecting channel; the second inserting portion (23) and the outlet end (12) are inserted into the second opening portion, so that the flow collecting shell, the outlet end (12) and the first sealing cushion block (20) form an outlet side flow collecting channel in a surrounding mode.

3. The heat exchanger of claim 1, further comprising:

the clamping structure is arranged on the first sealing cushion block (20) so that at least part of the flow collecting shell is clamped into the clamping structure when the inserting part is inserted into the opening part.

4. The heat exchanger according to claim 3, wherein the clamping structure comprises a clamping groove (30), and the clamping groove (30) is arranged on the first sealing cushion block (20) so that at least part of the flow collecting shell is inserted into the clamping groove (30) when the inserting part is inserted into the opening part.

5. The heat exchanger of claim 4, wherein the plurality of snap-in grooves (30) are provided, and the plurality of snap-in grooves (30) are spaced apart to allow at least a portion of the manifold body to be inserted into the plurality of snap-in grooves (30).

6. The heat exchanger of claim 4, wherein the manifold housing comprises a main housing and a plug housing, the plug housing is disposed on the main housing, the plug housing comprises a first plug plate and a second plug plate, the first plug plate and the second plug plate are disposed opposite to each other at two ends of the main housing, and the first plug plate and the second plug plate are disposed at a distance; the number of the clamping grooves (30) is two, the two clamping grooves (30) are respectively arranged on two sides of the inserting portion, so that when the inserting portion is inserted into the opening portion, the first inserting plate is inserted into one clamping groove (30), and the second inserting plate is inserted into the other clamping groove (30).

7. The heat exchanger according to claim 1, wherein the collecting housing comprises a main housing and a plug housing, the plug housing being arranged on the main housing, the plug gap of the plug housing decreasing in the direction of extension of the main housing to the plug housing.

8. The heat exchanger of claim 1, wherein the insertion portion has a first side surface, an arc surface, and a second side surface, the first side surface, the arc surface, and the second side surface are sequentially connected to each other, the first side surface and the second side surface are both used for being attached to the collecting shell, and the arc surface is used for enclosing a collecting channel with the collecting shell.

9. The heat exchanger according to claim 1, characterized in that the ends of the flat tubes (10) are provided with arc-shaped ports for insertion in the opening portions to communicate the collecting channels with the fluid channels in the flat tubes (10).

10. The heat exchanger of claim 2,

the inlet end (11) is a first arc-shaped port which is used for being inserted into the first opening part, so that the first opening part is communicated with a fluid channel in the flat pipe (10) through the first arc-shaped port; and/or the presence of a gas in the gas,

the outlet end (12) is a second arc-shaped port which is used for being inserted into the second opening part, so that the second opening part is communicated with the fluid channel in the flat pipe (10) through the second arc-shaped port.

11. The heat exchanger of claim 1, wherein the spigot is flared.