CN215982873U - Heat exchanger backflow prevention pipe structure and heat exchanger - Google Patents
Heat exchanger backflow prevention pipe structure and heat exchanger Download PDFInfo
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- CN215982873U CN215982873U CN202120801482.6U CN202120801482U CN215982873U CN 215982873 U CN215982873 U CN 215982873U CN 202120801482 U CN202120801482 U CN 202120801482U CN 215982873 U CN215982873 U CN 215982873U
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Abstract
The utility model relates to a heat exchanger backflow prevention pipe structure and a heat exchanger, wherein the heat exchanger backflow prevention pipe structure comprises a first pipe and a second pipe, two ends of the first pipe are arranged in a closed mode, and the first pipe is provided with a through hole; the second pipe is provided with a medium inlet end and a closed end which are arranged oppositely, the closed end of the second pipe penetrates through the other end of the first pipe from one end of the first pipe, the second pipe is provided with an anti-backflow hole, and the anti-backflow hole is close to and located in the first pipe and is close to the closed end. When the operation of heat exchanger pause, through using the heat exchanger anti-reflux tube structure that this application provided, effectively avoid the refrigerant backward flow, prevent noise or abnormal sound appearing in the heat exchanger, be favorable to improving heat exchanger heat exchange system's stability.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to a heat exchanger backflow prevention pipe structure and a heat exchanger using the same.
Background
Heat exchangers are devices used in air conditioning systems to effect heat exchange. At present, a backflow prevention device is not arranged in a cooling system in a conventional heat exchanger, when the heat exchanger is in pause operation, refrigerant backflow occurs, abnormal sound or noise is formed in the heat exchanger due to the refrigerant backflow, and the performance of the heat exchanger is greatly influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a backflow preventing structure for a heat exchanger and a heat exchanger.
In order to achieve the purpose, the technical scheme provided by the utility model is as follows:
a heat exchanger backflow prevention pipe structure comprises a first pipe and a second pipe, wherein two ends of the first pipe are arranged in a closed mode, and a through hole is formed in the first pipe; the second pipe has relative medium entrance point and blind end that sets up, the blind end of second pipe is followed the one end of first pipe is worn to establish to the other end of first pipe, the hole of preventing flowing back has been seted up on the second pipe, the hole of preventing flowing back is located in the first pipe, and be close to the blind end sets up, prevent flowing back the hole with first pipe with the second pipe intercommunication.
It can be understood that, usually, the heat exchanger is vertically installed, and the corresponding backflow prevention pipe structure of the heat exchanger is also vertically installed, in other words, the position of the medium inlet end of the second pipe is lower than that of the closed end, the refrigerant flows in from the medium inlet end of the second pipe, and when the refrigerant is enough and the pressure is enough, the refrigerant rises to enter the backflow prevention hole and flows into the first pipe, and then flows into the heat exchanger body through the through hole for heat exchange. When the operation of heat exchanger pause, the refrigerant is because pressure is not enough and receive the influence of self gravity, and the refrigerant can't rise to backflow prevention hole department to this is internal for unable inflow heat exchanger, and this internal remaining refrigerant of heat exchanger also can't reverse flow through heat exchanger backflow prevention tubular construction simultaneously, thereby effectively avoids the refrigerant backward flow, prevents noise or abnormal sound appearing in the heat exchanger, is favorable to improving heat exchanger heat exchange system's stability.
In one embodiment, the number of the anti-backflow holes is multiple, and the anti-backflow holes are arranged on the second pipe at intervals.
It can be understood that the plurality of anti-backflow holes are arranged, so that a large amount of refrigerants can rapidly flow between the second pipe and the first pipe.
In one embodiment, the side wall of the first pipe is provided with a plurality of through holes, and the through holes are arranged along the axial direction of the first pipe.
It can be understood that the refrigerant is shunted to the heat exchange loop in the heat exchanger body from the first pipe, and heat exchange is realized.
In one embodiment, a plurality of branch pipes are arranged on the first pipe, and each branch pipe is correspondingly connected and communicated with one through hole.
In one embodiment, a flange is arranged on the through hole, and the branch pipe is connected with the flange.
It can be understood that the branch pipe can be directly assembled and connected with the flanging, is simple and convenient, ensures good sealing performance between the through hole and the branch pipe, and prevents refrigerant leakage.
In one embodiment, the branch pipe has a large diameter section and a small diameter section, and the outer diameter of the large diameter section is smaller than that of the small diameter section; one end of the large-diameter section is connected and communicated with the through hole, and the other end of the large-diameter section is connected with the small-diameter section.
It can be understood that, when installation heat exchanger anti-reflux pipe structure, insert through the path section and locate in the heat exchange interface pipe on the heat exchanger body, realize heat exchanger anti-reflux pipe structure's installation fast, simultaneously, the branch pipe is inserted and is located in the heat exchange interface pipe, reinforcing anti-reflux pipe structure and this body coupling's of heat exchanger intensity and stability prevent the heat transfer takeover crooked or rupture, effectively eliminate heat transfer takeover when heat exchanger system operation fracture buckle the hidden danger that leads to the system coolant leakage.
A heat exchanger comprises a heat exchanger body and any one of the heat exchanger backflow preventing pipe structures, wherein the heat exchanger backflow preventing pipe structures are communicated with the heat exchanger body through the through holes.
In one embodiment, the first pipe is provided with a plurality of branch pipes, the heat exchanger body is provided with a plurality of heat exchange connecting pipes, and each branch pipe is correspondingly inserted into the heat exchange connecting pipe and communicated with the heat exchanger body.
It can be understood that the branch pipe is connected with the heat exchange connecting pipe in an assembling manner, so that the anti-backflow pipe structure of the heat exchanger is quickly positioned and assembled, and the assembly efficiency is improved.
In one embodiment, the branch pipe comprises a large-diameter section and a small-diameter section, one end of the large-diameter section is connected and communicated with the through hole, and the other end of the large-diameter section is connected with the small-diameter section; the heat exchange connecting pipe is divided into a first section and a second section, the diameter of the first section is larger than that of the second section, one end of the second section is connected with the heat exchanger body, and the other end of the second section is connected with the first section; wherein the outer diameter of the large diameter section is smaller than the inner diameter of the first section, and the outer diameter of the small diameter section is smaller than the inner diameter of the second section; the small-diameter section penetrates through the second section and is partially positioned in the heat exchanger body.
The heat exchange connecting pipe comprises a first section, a second section, a third section, a fourth section and a fourth section, wherein the first section is provided with a heat exchange connecting pipe, the second section is provided with a heat exchange connecting pipe, the third section is provided with a heat exchange connecting pipe, the fourth section is provided with a heat exchange connecting pipe, and the fourth section is provided with a heat exchange connecting pipe; and the small diameter section part is positioned in the heat exchanger body, thereby effectively eliminating the hidden trouble of refrigerant leakage in the system caused by the breakage and bending of the heat exchange connecting pipe.
In one embodiment, the length of the part of the small diameter section located in the heat exchanger body is 2mm-15 mm.
It can be understood that, the path section stretches into the heat exchanger originally internally, and the refrigerant that passes through from the path section can directly circulate to the heat exchanger originally internally, and the refrigerant leaks from damaged heat transfer takeover when effectively preventing the heat transfer takeover damaged to can improve the stability of system, eliminate the hidden danger that the refrigerant leaked.
Compared with the prior art, the technical scheme has the beneficial effects that:
the utility model provides an anti-backflow structure of a heat exchanger, wherein the anti-backflow structure of the heat exchanger comprises a first pipe and a second pipe, and an anti-backflow hole is formed in the second pipe; usually, the heat exchanger is vertically installed, and the corresponding heat exchanger backflow prevention pipe structure is also vertically installed, in other words, the position of the medium inlet end of the second pipe is lower than that of the closed end, the refrigerant flows in from the medium inlet end of the second pipe, and when the refrigerant is enough and the pressure is enough, the refrigerant rises to enter the backflow prevention hole and flows into the first pipe, and then flows into the heat exchanger body through the through hole to exchange heat. When the operation of heat exchanger pause, the refrigerant is because pressure is not enough and receive the influence of self gravity, and the refrigerant can't rise to backflow prevention hole department to this is internal for unable inflow heat exchanger, and this internal remaining refrigerant of heat exchanger also can't reverse flow through heat exchanger backflow prevention tubular construction simultaneously, thereby effectively avoids the refrigerant backward flow, prevents noise or abnormal sound appearing in the heat exchanger, is favorable to improving heat exchanger heat exchange system's stability.
Further, be provided with the branch pipe on the first pipe, and the branch pipe includes big footpath section and path section, the external diameter of path section is less than the internal diameter of heat transfer takeover, when installation heat exchanger backflow prevention pipe structure, insert the heat transfer takeover of locating on the heat exchanger body through the branch pipe, realize backflow prevention pipe structure's installation fast, and simultaneously, the branch pipe is inserted and is located in the installation, strengthen backflow prevention pipe structure and this body coupling's of heat exchanger intensity and stability, prevent that the heat transfer takeover is crooked or rupture, effectively eliminate the heat transfer takeover when heat exchanger system operation and break the hidden danger that refrigerant leaked in the system that buckles and lead to.
Drawings
FIG. 1 is a schematic structural diagram of a backflow prevention structure of a heat exchanger according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a heat exchanger according to an embodiment of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2.
Description of reference numerals:
100. a heat exchanger anti-reflux tube structure; 200. a heat exchanger; 1. a first tube; 11. a through hole; 12. a branch pipe; 121. a large diameter section; 122. a small diameter section; 13. flanging; 2. a second tube; 21. an anti-backflow hole; 22. a media inlet port; 23. a closed end; 3. a heat exchanger body; 31. a heat exchange loop; 32. a heat exchange connecting pipe; 321. a first stage; 322. and a second section.
Detailed Description
The technical solutions in 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 apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Referring to fig. 1 to 3, the embodiment provides a heat exchanger backflow prevention pipe structure 100, wherein a heat exchanger 200 includes a heat exchanger body 3 and the heat exchanger backflow prevention pipe structure 100, a refrigerant flows into the heat exchanger backflow prevention pipe structure 100 and flows into the heat exchanger body 3 to exchange heat, and the refrigerant after heat exchange flows into an air conditioning system and circulates and then flows into the heat exchanger backflow prevention pipe structure 100 and the heat exchanger body 3, so as to circulate in a reciprocating manner, thereby achieving a heating or cooling function of the air conditioning system.
Specifically, referring to fig. 1, the heat exchanger backflow prevention pipe structure 100 includes a first pipe 1 and a second pipe 2, two ends of the first pipe 1 are sealed, and the first pipe 1 is provided with a through hole 11; the second pipe 2 has the medium entrance point 22 and the blind end 23 of relative setting, and the blind end 23 of second pipe 2 wears to establish to the other end of first pipe 1 from the one end of first pipe 1, has seted up anti-return hole 21 on the second pipe 2, and anti-return hole 21 is close to and is located first pipe 1 to be close to blind end 23 setting, first pipe 1 and second pipe 2 are through anti-return hole intercommunication.
When the heat exchanger 200 normally operates, the refrigerant flows into the second pipe 2 through the medium inlet end 22 of the second pipe 2, when the refrigerant is enough and the pressure is enough, the refrigerant rises to enter the backflow preventing hole 21 and flows into the first pipe 1, and the refrigerant further flows into the heat exchanger body 3 through the through hole 11 on the first pipe 1 to exchange heat. When the operation of heat exchanger 200 system pause, the refrigerant is because insufficient pressure and receive the influence of self gravity, the refrigerant can't rise to anti-reflux hole 21 department, thereby can't flow in the second pipe 2 outside and circulate to the heat exchanger body 3 in, remaining refrigerant also can't reverse flow through anti-reflux hole 21 and flow in the second pipe 2 in the heat exchanger body 3 simultaneously, thereby effectively avoid the refrigerant backward flow, prevent noise or abnormal sound from appearing in the heat exchanger 200, be favorable to improving heat exchanger 200 heat exchange system's stability.
It should be noted that the heat exchanger 200 is generally vertically installed, and the backflow preventing pipe structure 100 of the heat exchanger in this application is also vertically installed, in other words, it is ensured that the position of the medium inlet end 22 of the second pipe 2 is required to be lower than the position of the closed end 23 when the heat exchanger is installed, and the height difference between the medium inlet end 22 and the closed end 23 is sufficient to ensure that the refrigerant cannot pass through the backflow preventing hole 21 under the action of its own gravity when the air conditioning system is in a suspended operation. Certainly, the anti-backflow pipe structure 100 of the heat exchanger may also be arranged obliquely, and when the anti-backflow pipe structure is arranged obliquely, the height difference between the medium inlet end 22 and the closed end 23 needs to be sufficient, for example, when the anti-backflow pipe structure is installed obliquely, the installation angle is less than 30 degrees, so that it is ensured that the refrigerant cannot pass through the anti-backflow hole 21 under the action of self gravity when the air conditioning system is in a pause operation. Preferably, the number of the backflow-preventing holes 21 is plural, and the plural backflow-preventing holes 21 are provided at intervals on the second pipe 2, and the plural backflow-preventing holes 21 are provided, so that the refrigerant can rapidly flow through the second pipe 2 and the first pipe 1.
Referring to fig. 1-3, a plurality of through holes 11 are formed in the side wall of the first tube 1, and the through holes 11 are arranged along the axial direction of the first tube 1, so that the refrigerant is conveniently shunted from the first tube 1 to the heat exchange loop 31 in the heat exchanger body 3, thereby realizing heat exchange.
Preferably, a plurality of branch pipes 12 are arranged on the first pipe 1, each branch pipe 12 is correspondingly connected and communicated with one through hole 11, and is connected and communicated with the heat exchanger body 3 through the branch pipe 12, so that the assembly is convenient, and the problem that the refrigerant leaks from the through hole 11 due to the fact that the assembly between the through hole 11 and the heat exchanger body 3 is not tight is effectively prevented. A
Preferably, referring to fig. 1, the through hole 11 is provided with a flange 13, and the branch pipe 12 is connected with the flange 13, so that the installation difficulty of the branch pipe 12 is reduced, for example, the branch pipe 12 can be directly welded or bonded with the flange 13, and the installation method is simple and convenient, and can ensure the sealing property between the through hole 11 and the branch pipe 12.
Preferably, referring to fig. 1-3, the branch pipe 12 has a large diameter section 121 and a small diameter section 122, the large diameter section 121 having an outer diameter smaller than that of the small diameter section 122; one end of the large-diameter section 121 is connected and communicated with the through hole 11, and the other end is connected with the small-diameter section 122; the small diameter section 122 is small in diameter, so that the heat exchanger body 3 can be inserted fast, and the assembly efficiency is improved; and the minor diameter section 122 plays the effect of direction, and the minor diameter section 122 inserts fast and establishes in heat exchanger body 3, and major diameter section 121 is connected with heat exchanger body 3 thereupon, appears crooked phenomenon when preventing heat exchanger backflow preventing pipe structure 100 from assembling.
Referring to fig. 2 and 3, the embodiment provides a heat exchanger 200, where the heat exchanger 200 includes a heat exchanger body 3 and the above-mentioned heat exchanger backflow prevention pipe structure 100, and a refrigerant flows into the heat exchanger backflow prevention pipe structure 100 and flows into the heat exchanger body 3 for heat exchange. The heat exchanger body 3 has a plurality of heat exchange loops 31 for circulating a refrigerant and exchanging heat.
Further, a plurality of heat exchange connecting pipes 32 are arranged on the heat exchanger body 3, each branch pipe 12 is correspondingly inserted into the heat exchange connecting pipe 32 and is connected and communicated with the heat exchanger body 3, and the heat exchanger backflow preventing pipe structure 100 is quickly positioned and installed through the assembly connection of the branch pipes 12 corresponding to the heat exchange connecting pipes 32, so that the heat exchanger backflow preventing pipe structure 100 is effectively prevented from inclining or inclining relative to the heat exchanger body 3 during installation, and the sealing performance and stability of the air conditioning system are influenced.
Preferably, referring to fig. 1 to 3, the heat exchange adapter 32 is divided into a first section 321 and a second section 322, the diameter of the first section 321 is larger than that of the second section 322, one end of the second section 322 is connected with the heat exchanger body 3, and the other end is connected with the first section 321; the outer diameter of the large-diameter section 121 of the branch pipe 12 is smaller than the inner diameter of the first section 321, and the outer diameter of the small-diameter section 122 is smaller than the inner diameter of the second section 322, so that the small-diameter section 122 can be smoothly and quickly inserted into the heat exchange adapter 32. During assembly, the small-diameter section 122 penetrates through the second section 322 and is partially positioned in the heat exchanger body 3, the large-diameter section 121 is at least partially positioned in the first section 321, and the large-diameter section 121 is connected with the second section 322 in a matched mode, so that refrigerant leakage is prevented, and the system tightness is improved; through the cooperation of the small diameter section 122 and the second section 322, the quick positioning and installation of the heat exchanger backflow preventing pipe structure 100 are realized, and the problem that the branch pipe 12 is difficult to assemble due to the deflection of the heat exchange connecting pipe 32 or the mismatching of the diameters of the heat exchange connecting pipe 32 and the branch pipe 12 is solved. Further, the branch pipes 12 are inserted and installed in the heat exchange connection pipes 32, which is beneficial to preventing the heat exchange connection pipes 32 from being bent.
Preferably, referring to fig. 2 and 3, the length of the portion of the small diameter section 122 located in the heat exchanger body 3 is 2mm-15mm, and when the heat exchange adapter 32 is bent or damaged, because the small diameter section 122 extends into the heat exchanger body 3, the refrigerant passing through the small diameter section 122 can directly circulate into the heat exchanger body 3, thereby effectively preventing the refrigerant from leaking from the damaged heat exchange adapter 32, improving the stability of the system, and eliminating the hidden trouble of refrigerant leakage. Of course, in other embodiments, the length of the small-diameter section 122 extending into the heat exchanger body 3 is not limited to the above or shown in the drawings.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The heat exchanger backflow preventing pipe structure is characterized by comprising a first pipe and a second pipe, wherein two ends of the first pipe are arranged in a closed mode, and a through hole is formed in the first pipe;
the second pipe has relative medium entrance point and blind end that sets up, the blind end of second pipe is followed the one end of first pipe is worn to establish to the other end of first pipe, the hole of preventing flowing back has been seted up on the second pipe, the hole of preventing flowing back is located in the first pipe, and be close to the blind end sets up, prevent flowing back the hole with first pipe with the second pipe intercommunication.
2. The heat exchanger backflow prevention pipe structure according to claim 1, wherein the number of the backflow prevention holes is plural, and the plural backflow prevention holes are provided at intervals on the second pipe.
3. The heat exchanger backflow prevention pipe structure according to claim 1, wherein a plurality of through holes are formed in a side wall of the first pipe, and the through holes are arranged along an axial direction of the first pipe.
4. The heat exchanger backflow prevention structure as claimed in claim 3, wherein a plurality of branch pipes are disposed on the first pipe, and each branch pipe is connected and communicated with one of the through holes.
5. The heat exchanger backflow prevention pipe structure as claimed in claim 4, wherein a flange is provided on the through hole, and the branch pipe is connected with the flange.
6. The heat exchanger backflow prevention pipe structure according to claim 4, wherein the branch pipe has a large diameter section and a small diameter section, and an outer diameter of the large diameter section is smaller than an outer diameter of the small diameter section; one end of the large-diameter section is connected and communicated with the through hole, and the other end of the large-diameter section is connected with the small-diameter section.
7. A heat exchanger, characterized by comprising a heat exchanger body and a heat exchanger backflow prevention structure as claimed in any one of claims 1 to 6, the heat exchanger backflow prevention structure being in communication with the heat exchanger body through the through hole.
8. The heat exchanger of claim 7, wherein the second tube has a plurality of branch tubes thereon, and the heat exchanger body has a plurality of heat exchange connection tubes thereon, each of the branch tubes being inserted into the heat exchange connection tube and communicating with the heat exchanger body.
9. The heat exchanger according to claim 8, wherein the branch pipe includes a large diameter section and a small diameter section, the large diameter section being connected to and communicating with the through hole at one end and connected to the small diameter section at the other end; the heat exchange connecting pipe is divided into a first section and a second section, the diameter of the first section is larger than that of the second section, one end of the second section is connected with the heat exchanger body, and the other end of the second section is connected with the first section;
wherein the outer diameter of the large diameter section is smaller than the inner diameter of the first section, and the outer diameter of the small diameter section is smaller than the inner diameter of the second section; the small-diameter section penetrates through the second section and is partially positioned in the heat exchanger body.
10. The heat exchanger of claim 9, wherein the portion of the reduced diameter section located within the heat exchanger body has a length of 2mm to 15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120801482.6U CN215982873U (en) | 2021-04-19 | 2021-04-19 | Heat exchanger backflow prevention pipe structure and heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120801482.6U CN215982873U (en) | 2021-04-19 | 2021-04-19 | Heat exchanger backflow prevention pipe structure and heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215982873U true CN215982873U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120801482.6U Active CN215982873U (en) | 2021-04-19 | 2021-04-19 | Heat exchanger backflow prevention pipe structure and heat exchanger |
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| Country | Link |
|---|---|
| CN (1) | CN215982873U (en) |
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2021
- 2021-04-19 CN CN202120801482.6U patent/CN215982873U/en active Active
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