CN219200139U - Heat pipe and heat exchanger - Google Patents

Abstract

The application relates to the technical field of heat exchange, and discloses a heat pipe, which comprises: a tube shell surrounding a flow chamber; the liquid drainage pipe is arranged at the bottom of the flow cavity and is parallel to the pipe shell; the rib is arranged at the outer side of the pipe wall of the liquid drainage pipe; wherein, a plurality of fins are arranged at intervals, and through holes are formed on the pipe wall of the liquid discharge pipe between the adjacent fins, so that the heat transfer working medium of the flow cavity flows through the fins, flows into the through holes along the fins, and is collected in the liquid discharge pipe to flow out. The heat exchange area is increased through the ribs, and the liquid film of the heat transfer working medium in the flow cavity is extended to reduce the thickness of the liquid film, so that the heat exchange efficiency is effectively enhanced; the heat transfer working medium flows downwards along the fins and flows through the through holes, flows into the liquid drainage guide pipes positioned at the bottom of the flow cavity to be collected, and flows out through the liquid drainage guide pipes, so that the heat transfer working medium can be prevented from accumulating at the bottom of the flow cavity; the whole heat pipe not only can enhance the heat exchange efficiency, but also can accelerate the liquid discharge speed. The application also discloses a heat exchanger.

Description

Heat pipe and heat exchanger

Technical Field

The application relates to the technical field of heat exchange, for example, to a heat pipe and a heat exchanger.

Background

At present, the heat pipe is widely applied in the fields of energy conservation, heat recovery and the like due to the high-efficiency heat conduction capability. The separated heat pipe further utilizes the fact that the evaporation end and the condensation end of the heat pipe heat exchanger are arranged separately, so that two relatively independent parts are formed at the two ends, and long-distance heat transfer is achieved.

However, the existence of the ripple angle in the condensation tube of the traditional condensation end leads to a lower discharge speed of the condensed liquid, and in addition, the heat transfer working medium which is condensed along with condensation in the condensation tube is accumulated, so that the heat exchange thermal resistance of the condensation end is increased, and the heat exchange efficiency is reduced.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a heat pipe and a heat exchanger, which are used for accelerating the liquid discharge speed of a heat transfer working medium and enhancing the heat exchange efficiency.

In some embodiments, the heat pipe comprises:

a tube shell surrounding a flow chamber;

the liquid drainage pipe is arranged at the bottom of the flow cavity and is parallel to the pipe shell;

the rib is arranged at the outer side of the pipe wall of the liquid drainage pipe;

the heat transfer working medium flows through the fins, flows into the through holes along the fins, and is collected in the liquid discharge pipe to flow out.

In some embodiments, the rib is disposed perpendicular to the drainage conduit.

In some embodiments, the top edges of the fins are configured to extend outwardly to form a protrusion for reducing the liquid film thickness of the heat transfer medium flowing through the fins to increase the heat dissipation rate.

In some embodiments, the protrusions are arc-shaped, so that the heat transfer working medium in the flow cavity flows downwards into the liquid drainage pipe along the protrusions under the action of gravity.

In some embodiments, a portion of the edge of the fin extends outwardly to the exterior of the shell to increase the heat dissipation area of the heat pipe.

In some embodiments, the cartridge and the drain conduit are disposed horizontally.

In some embodiments, the heat exchanger comprises: the first pipeline, the second pipeline and the heat pipe provided in the previous embodiment are sequentially communicated;

the first pipeline is communicated with the flow cavity of the pipe shell, the second pipeline is communicated with the liquid drainage pipe, the heat transfer working medium flows in from the first pipeline, sequentially flows through the flow cavity and the liquid drainage pipe, and flows out from the second pipeline.

In some embodiments, the heat exchanger further comprises:

the liquid separator is arranged on the second pipeline and is used for separating the gas and the liquid of the heat transfer working medium flowing out of the liquid drainage pipe;

and the gas pipeline is communicated with the liquid separator and the heat pipe and used for enabling the heat transfer working medium which is in a gaseous state after the liquid separator is subjected to gas-liquid separation to flow into the heat pipe for heat dissipation and condensation.

In some embodiments, the heat exchanger further comprises:

the pumping device is arranged on the second pipeline and is positioned at the outlet side of the liquid separator and used for conveying the heat transfer working medium which is in a liquid state after being separated from the liquid in the liquid separator.

In some embodiments, the heat exchanger further comprises:

and the valve component is arranged at the joint of the gas pipeline and the heat pipe and is used for preventing gaseous heat transfer working medium in the heat pipe from flowing into the gas pipeline.

The heat pipe and the heat exchanger provided by the embodiment of the disclosure can realize the following technical effects:

the heat transfer working medium flows into the flow cavity of the tube shell and flows through the ribs, the heat exchange area is increased through the ribs, and the liquid film of the heat transfer working medium in the flow cavity is expanded to reduce the thickness of the liquid film, so that the heat exchange efficiency is effectively enhanced; the heat transfer working medium flows downwards along the fins and flows through the through holes, flows into the liquid drainage guide pipe arranged at the bottom of the flow cavity to be collected and flows out through the liquid drainage guide pipe, so that the heat transfer working medium can be prevented from being accumulated at the bottom of the flow cavity, the flow is slow, the heat exchange efficiency of the whole heat pipe can be enhanced, and the liquid drainage speed can be accelerated.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic diagram of a frame structure of the heat exchanger provided by an embodiment of the present disclosure;

FIG. 2 is a schematic view of a frame structure of another view of the heat exchanger provided by an embodiment of the present disclosure;

FIG. 3 is a schematic view of a partial structure of the first conduit and the heat pipe provided by an embodiment of the present disclosure;

fig. 4 is a schematic view of a partial structure of the first pipe and the heat pipe from another perspective according to an embodiment of the present disclosure.

Reference numerals:

10: a tube shell; 101: a flow chamber; 20: a drainage conduit; 30: a rib; 301: a protrusion; 40: a first pipeline; 50: a second pipeline; 60: a knockout; 70: a gas line; 80: a pumping device; 901: a control valve; 902: a check valve; 100: and (5) evaporating the end.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

As shown in connection with fig. 1-4, embodiments of the present disclosure provide a heat pipe including a pipe shell 10, a drain line, and a fin 30. The heat pipe formed by the pipe shell 10, the liquid discharge pipeline and the ribs 30 can reduce the accumulation of heat transfer working media in the heat pipe, reduce the thickness of a liquid film in the pipe, accelerate the liquid discharge speed of the heat transfer working media and enhance the heat exchange efficiency.

The tube shell 10 is used for limiting a flow cavity 101 for circulating heat transfer working media; the liquid drainage pipe 20 is arranged at the bottom of the flow cavity 101 and is parallel to the pipe shell 10; the heat transfer working medium is preferentially deposited at the bottom in the flow cavity 101, and the heat transfer working medium deposited at the bottom of the flow cavity 101 can be discharged out of the heat pipe by arranging the liquid discharge conduit 20 at the bottom of the flow cavity 101, so that the problem of accumulation of the heat transfer working medium of the heat pipe is solved.

A rib 30 provided on the outside of the wall of the drainage duct 20; the rib 30 is located in the flow cavity 101 of the pipe shell 10, when the heat transfer working medium in the flow cavity 101 flows, the heat transfer area can be increased through the rib 30 when the heat transfer working medium flows through the rib 30, the liquid film of the heat transfer working medium in the flow cavity 101 is expanded, the thickness of the liquid film is reduced, and therefore the heat transfer efficiency is enhanced.

Wherein, a plurality of ribs 30 are arranged at intervals, and through holes are formed on the pipe walls of the liquid discharge pipes 20 between the adjacent ribs 30, so that the heat transfer working medium of the flow cavity 101 flows through the ribs 30, flows into the through holes along the ribs 30, and is collected in the liquid discharge pipes 20 to flow out.

By adopting the heat pipe provided by the embodiment of the disclosure, the heat transfer working medium flows into the flow cavity 101 of the pipe shell 10 and flows through the ribs 30, the heat exchange area is increased by the ribs 30, and the liquid film of the heat transfer working medium in the flow cavity 101 is expanded to reduce the thickness of the liquid film, so that the heat exchange efficiency is effectively enhanced; the heat transfer working medium flows downwards along the fins 30 and flows into the liquid drainage guide pipe 20 at the bottom of the flow cavity 101 to be collected and flows out through the liquid drainage guide pipe 20, so that the heat transfer working medium can be prevented from accumulating at the bottom of the flow cavity 101, the flow is slow, the heat exchange efficiency of the whole heat pipe can be enhanced, and the liquid drainage speed of the heat transfer working medium can be accelerated.

In this embodiment, the heat transfer working medium flowing into the heat pipe is gaseous heat transfer working medium, and the heat transfer working medium is condensed and cooled in the heat pipe to be changed into liquid heat transfer working medium, wherein the heat transfer working medium flowing out of the heat pipe not only has the liquid heat transfer working medium, but also has the heat transfer working medium mixed with gas and liquid. Through the heat pipe of this embodiment, improve the heat exchange efficiency of heat pipe to reduce the duty cycle of the heat transfer working medium that is gas-liquid mixture, thereby improve the result of use of heat exchanger.

The plurality of ribs 30 are uniformly spaced. The distance may be determined according to practical situations, and is not limited herein.

Alternatively, the fin 30 has a plate-like structure, the plate surface of the fin 30 is perpendicular to the axis of the tube housing 10, and the top of the fin 30 is spaced from the top of the flow chamber 101 by a certain distance, so that the heat transfer medium circulates. Thus, part of the heat transfer medium entering from the inlet side of the tube housing 10 continues to flow forward from the top of the flow chamber 101, and the part of the heat transfer medium flows downward under the action of gravity while flowing. In the process of downward flowing, when flowing through the ribs 30 corresponding to the area where the heat transfer working medium is located, the liquid film in the heat transfer working medium is attached to the surface of the ribs 30, so that the heat exchange area is enlarged through the ribs 30, and the liquid film of the heat transfer working medium is expanded, so that the thickness of the liquid film is reduced, the condensation speed is increased, and the heat exchange efficiency is enhanced.

The ribs 30 are disposed on the outer side of the wall of the drain conduit 20, and the wall of the drain conduit 20 between adjacent ribs 30 is configured with through openings, so that the heat transfer medium flowing downward along the ribs 30 can flow into the drain conduit 20 through the corresponding through openings to be collected.

Optionally, the radial length of the through-opening is less than or equal to the spacing between adjacent ribs 30 along the axial direction of the drainage conduit 20. In the case where the radial length of the through-hole is smaller than the interval between the adjacent ribs 30, the structural strength of the drain conduit 20 can be ensured. In the case where the radial length of the through-hole is equal to the distance between the adjacent ribs 30, the heat transfer medium flowing downward along the ribs 30 can be made to flow into the drain pipe 20 through the through-hole as soon as possible.

Alternatively, the drain conduit 20 has a pipe diameter smaller than the inner diameter of the cartridge 10, and the bottom of the drain conduit 20 abuts against the bottom of the cartridge 10.

Alternatively, the rib 30 may be provided at the top of the drain conduit 20 and may extend circumferentially downwardly. That is, the rib 30 is provided at least semi-circumferentially on the wall of the drain pipe 20.

Optionally, the length of the through-opening in the circumferential direction is less than or equal to the length of the rib 30 provided on the drain conduit 20 in the circumferential direction.

Alternatively, the rib 30 is disposed perpendicular to the drain conduit 20.

The ribs 30 are arranged vertically to the liquid discharge conduit 20, so that the heat transfer working medium flowing through the upper part in the flow cavity 101 can directly flow downwards into the through openings between the adjacent ribs 30 under the action of gravity; in addition, the heat transfer working medium flowing through the rib 30 flows downwards along the rib 30, so that the heat exchange area of the heat transfer working medium is enlarged, the liquid film of the heat transfer working medium is extended, and the thickness of the liquid film is reduced; thus, the heat exchange efficiency of the heat transfer working medium can be enhanced, and the flow speed of the heat transfer working medium can be ensured.

In practice, the ribs 30 may be disposed slightly inclined and inclined from bottom to top along the axis of the cartridge 10. In this way, the heat transfer medium flowing in the tube shell 10 can be guided by the ribs 30, so that the flow resistance of the heat transfer medium is reduced.

Optionally, the top edges of the fins 30 are configured to extend outwardly to form a protrusion 301 for reducing the liquid film thickness of the heat transfer medium flowing through the fins 30 to increase the heat dissipation rate.

The protrusion 301 formed by the outward extending structure of the top edge of the rib 30 can reduce the flow resistance caused by the heat transfer working medium flowing above the flow cavity 101 on one hand; on the other hand, the heat transfer medium flowing above the flow cavity 101 can flow through the protrusion 301, so that the heat transfer medium flowing through the protrusion 301 flows downwards along the protrusion 301, and the thickness of the liquid film attached to the protrusion 301 and the rib 30 is reduced under the action of surface tension, so that the heat dissipation and condensation speeds of the heat transfer medium are increased.

Alternatively, protrusions 301 have a smaller cross-sectional area from bottom to top.

Alternatively, the symmetrical parting line of protrusion 301 is disposed collinear with the symmetrical parting line of rib 30. This contributes to the symmetry of the overall structure of the rib 30, thus ensuring the stability of the rib 30 with respect to the whole of the drainage duct 20 after it has been provided in the drainage duct 20.

Alternatively, the cross-section of protrusion 301 may be tapered. In this way, the heat transfer medium flowing over the fins 30 flows downward from the top of the protrusions 301, thus not affecting the flow of the heat transfer medium located above in the flow chamber 101, but also draining part of the heat transfer medium.

Optionally, the protrusion 301 has an arc structure, so that the heat transfer medium in the flow chamber 101 flows down into the drain conduit 20 under the gravity action along the protrusion 301.

The protrusions 301 are of arc structures, so that not only can the fins 30 be better drained, but also the surface tension of the protrusions 301 is smoother, and the thickness of a liquid film attached to the surfaces of the protrusions 301 is reduced and uniform. The heat transfer medium flowing over the rib 30 is partially blocked by the protrusion 301, flows downward along the protrusion 301, and enters the liquid discharge conduit 20 through the through-hole. The arc-shaped bulge 301 is smoother in the process of conducting heat transfer working medium.

Optionally, a portion of the edge of the fin 30 extends outwardly to the exterior of the envelope 10 to increase the heat dissipation area of the heat pipe.

The "partial edge of the rib 30" is understood herein to mean the edge of the rib 30 other than the top edge.

The part of the edge of the fin 30 extends outwards to the outside of the tube shell 10, so that the heat transfer working medium in the tube shell 10 exchanges heat with the fin 30, heat is transferred to the fin 30 outside the tube shell 10 through the fin 30 outside the tube shell 10, and the part of the fin 30 outside the tube shell 10 exchanges heat directly with an external cooling medium, so that the heat dissipation area is increased, the heat dissipation efficiency is effectively improved, and the condensation effect of the heat transfer working medium in the heat tube is further improved.

Alternatively, the ribs 30 are of unitary construction with a portion of the edges of the ribs 30 extending outwardly to the exterior of the cartridge 10. The rib 30 is connected with the tube shell 10 in a plug-in manner. Illustratively, the walls of the cartridge 10 are configured with an opening, and the top of the fin 30 is first inserted into the cartridge 10 until it is in place. Part of the ribs 30 is now exposed outside the envelope 10. After the insertion, the connection between the fin 30 and the tube shell 10 is sealed to prevent the heat transfer medium in the tube shell 10 from leaking. Optionally, after the fin 30 and the tube shell 10 are inserted, a welding mode can be adopted to realize stable connection of the fin 30 and the tube shell 10, and stability and firmness of the heat pipe in the use process are sequentially ensured.

Optionally, the cartridge 10 and drain conduit 20 are disposed horizontally.

The tube shell 10 and the drain conduit 20 are horizontally arranged, so that under the action of gravity, the heat transfer medium accumulated at the bottom of the flow cavity 101 of the tube shell 10 can be discharged through the drain conduit 20, and local accumulation of the heat transfer medium in the bottom of the flow cavity 101 is avoided.

In addition, the tube shell 10 and the liquid discharge conduit 20 are horizontally arranged, so that the heat transfer medium accumulated at the bottom of the flow cavity 101 of the tube shell 10 is as uniform as possible, and the uniformity of the flow velocity of the heat transfer medium flowing out of the liquid discharge conduit 20 is ensured.

In addition, the tube shell 10 and the liquid drainage conduit 20 are horizontally arranged, so that the problem that the heat exchange efficiency is reduced due to too short flow time of the heat transfer working medium in the heat pipe caused by too high flow speed of the heat transfer working medium in the flow cavity 101 and the liquid drainage conduit 20 against gravity to do work in the flow process or under the action of gravity.

The drain conduit 20 has no corrugation angle therein and has a faster drain rate than the cartridge 10 having the corrugation angle. Therefore, the liquid is discharged through the liquid discharge pipe 20, and not only can the accumulation of the heat transfer medium be reduced, but also the flow rate of the heat transfer medium can be accelerated.

As shown in conjunction with fig. 1-4, embodiments of the present disclosure provide a heat exchanger comprising: the first pipeline 40, the second pipeline 50 and the heat pipe provided by the embodiment above, the first pipeline 40, the heat pipe and the second pipeline 50 are communicated in sequence; wherein, the first pipeline 40 is communicated with the flow cavity 101 of the pipe shell 10, the second pipeline 50 is communicated with the liquid discharge conduit 20, the heat transfer working medium flows in from the first pipeline 40, sequentially flows through the flow cavity 101 and the liquid discharge conduit 20, and flows out from the second pipeline 50.

The heat pipe comprises a pipe shell 10, a liquid discharge pipeline and a fin 30. The tube shell 10 is used for limiting a flow cavity 101 for circulating heat transfer working media; the liquid drainage pipe 20 is arranged at the bottom of the flow cavity 101 and is parallel to the pipe shell 10; a rib 30 provided on the outside of the wall of the drainage duct 20; wherein, a plurality of ribs 30 are arranged at intervals, and through holes are formed on the pipe walls of the liquid discharge pipes 20 between the adjacent ribs 30, so that the heat transfer working medium of the flow cavity 101 flows through the ribs 30, flows into the through holes along the ribs 30, and is collected in the liquid discharge pipes 20 to flow out.

The gaseous heat transfer medium in the first pipeline 40 flows into the heat pipe to perform heat dissipation and temperature reduction so as to condense the heat transfer medium into a liquid state, and the liquid heat transfer medium flows into the second pipeline 50 and flows into the evaporation end 100 through the second pipeline 50. The gaseous heat transfer medium in the first pipeline 40 is the heat transfer medium flowing out from the evaporation end 100.

The first pipeline 40 is communicated with the flow cavity 101 of the pipe shell 10, and the second pipeline 50 is communicated with the liquid discharge conduit 20, so that the heat transfer working medium flows out of the liquid discharge conduit 20, the outflow of the condensed heat transfer working medium positioned at the bottom of the flow cavity 101 in the pipe shell 10 is ensured, the problem of accumulation of the condensed heat transfer working medium is solved, the fluidity of the heat transfer working medium is improved, and the energy efficiency of the heat exchanger is further improved.

In addition, the drain conduit 20 is located at the bottom of the flow chamber 101 of the cartridge 10. The principle of the upward movement of the gas and the downward movement of the liquid is such that the heat transfer medium in the flow chamber 101 is intended to flow out of the drain conduit 20 and must flow down the drain conduit 20 in order to flow out. In this way, the content of the liquid heat transfer medium flowing out of the liquid discharge conduit 20, that is, the content of the liquid heat transfer medium flowing into the evaporation end 100 is increased, thereby improving the heat exchange effect of the heat exchanger.

By adopting the heat exchanger provided by the embodiment of the disclosure, the heat pipe is used as the condensation end of the heat exchanger, the heat transfer working medium flows into the flow cavity 101 of the pipe shell 10 and flows through the ribs 30, the heat exchange area is increased through the ribs 30, and the liquid film of the heat transfer working medium in the flow cavity 101 is expanded to reduce the thickness of the liquid film, so that the heat exchange efficiency is effectively enhanced; the heat transfer working medium flows downwards along the fins 30 and flows into the liquid drainage guide pipe 20 at the bottom of the flow cavity 101 to be collected and flows out through the liquid drainage guide pipe 20, so that the heat transfer working medium can be prevented from accumulating at the bottom of the flow cavity 101, the flow is slow, the heat exchange efficiency of the whole heat pipe can be enhanced, and the liquid drainage speed of the heat transfer working medium can be accelerated. In addition, the content of the liquid heat transfer medium flowing out of the liquid discharge conduit 20, i.e., the content of the liquid heat transfer medium flowing into the evaporation end 100 is also increased, thereby improving the heat exchange effect of the heat exchanger.

Optionally, the heat exchanger further comprises: a liquid separator 60, disposed in the second pipeline 50, for separating the heat transfer medium flowing out from the liquid discharge conduit 20 from gas and liquid; the gas pipeline 70 is communicated with the liquid separator 60 and the heat pipe, and is used for enabling the heat transfer working medium which is in a gaseous state after the liquid separator 60 is separated to flow into the heat pipe for heat dissipation and condensation.

The heat transfer medium flowing out of the liquid discharge conduit 20 not only contains a liquid heat transfer medium but also contains a heat transfer medium in a gas-liquid mixed state. By providing the liquid separator 60 in the second pipeline 50, the heat transfer medium in the gas-liquid mixed state in the second pipeline 50 can be separated into gas and liquid. The liquid heat transfer medium in the heat transfer medium after the gas-liquid separation continues to be conveyed along the second pipeline 50 until reaching the evaporation end 100. Gaseous heat transfer working medium in the heat transfer working medium after gas-liquid separation enters the gas pipeline 70 and is conveyed to the heat pipe through the gas pipeline 70, heat dissipation and condensation are carried out again, and the content of liquid heat transfer working medium conveyed to the evaporation end 100 is improved.

The gas pipeline 70 is arranged at the inlet side of the heat pipe, so that gaseous heat transfer working medium entering the heat pipe from the gas pipeline 70 is sufficiently cooled and condensed.

Optionally, the heat exchanger further comprises: the pumping device 80 is disposed on the second pipeline 50 and located at the outlet side of the knockout 60, and is used for conveying the heat transfer medium in liquid state after the gas-liquid separation of the knockout 60.

The pumping device 80 arranged in the second pipeline 50 can convey the liquid heat transfer working medium in the second pipeline 50 to the evaporation end 100, overcomes the gravity of the liquid heat transfer working medium in the conveying process, and can also accelerate the conveying speed.

The pumping device 80 is located at the outlet side of the knockout 60, so that the heat transfer working medium delivered by the pumping device 80 is a liquid heat transfer working medium, and the gaseous heat transfer working medium is prevented from being delivered to the evaporation end 100.

Optionally, the heat exchanger further comprises: the valve component is arranged at the joint of the gas pipeline 70 and the heat pipe and is used for preventing the gaseous heat transfer working medium in the heat pipe from flowing into the gas pipeline 70.

The valve assembly can not only control the on-off of the gas pipeline 70, but also prevent the gaseous heat transfer working medium in the heat pipe from flowing into the gas pipeline 70 or avoid the backflow of the heat transfer working medium which is about to flow into the heat pipe.

Optionally, the valve assembly includes a control valve 901 and a check valve 902. A control valve 901 and a check valve 902 are provided to the gas line 70 for installation. And the control valve 901 and the check valve 902 are disposed close to the heat pipe.

In addition, the check valve 902 is provided on the heat pipe side, i.e., closer to the heat pipe than the control valve 901, in order to prevent the gaseous heat transfer medium in the heat pipe from flowing into the gas line 70 or to prevent the heat transfer medium that is about to flow into the heat pipe from flowing back.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A heat pipe, comprising:

a tube shell surrounding a flow chamber;

the liquid drainage pipe is arranged at the bottom of the flow cavity and is parallel to the pipe shell;

the rib is arranged at the outer side of the pipe wall of the liquid drainage pipe;

the heat transfer working medium flows through the fins, flows into the through holes along the fins, and is collected in the liquid discharge pipe to flow out.

2. A heat pipe according to claim 1 wherein,

the ribs are arranged perpendicular to the liquid drainage pipe.

3. A heat pipe according to claim 1 wherein,

the top edge of the rib extends outwards to form a bulge for reducing the thickness of a liquid film of the heat transfer working medium flowing through the rib so as to accelerate the heat dissipation speed.

4. A heat pipe according to claim 3 wherein,

the bulges are of arc-shaped structures, so that the heat transfer working medium in the flow cavity flows downwards into the liquid drainage pipe along the bulges under the action of gravity.

5. A heat pipe according to claim 1 wherein,

and part of the edges of the ribs extend outwards to the outside of the tube shell so as to increase the heat dissipation area of the heat tube.

6. A heat pipe according to any one of claims 1 to 5 wherein,

the tube shell and the liquid drainage conduit are horizontally arranged.

7. A heat exchanger comprising a first conduit, a second conduit, and a heat pipe according to any one of claims 1 to 6, the first conduit, the heat pipe, and the second conduit being in communication in sequence;

the first pipeline is communicated with the flow cavity of the pipe shell, the second pipeline is communicated with the liquid drainage pipe, the heat transfer working medium flows in from the first pipeline, sequentially flows through the flow cavity and the liquid drainage pipe, and flows out from the second pipeline.

8. The heat exchanger of claim 7, further comprising:

the liquid separator is arranged on the second pipeline and is used for separating the gas and the liquid of the heat transfer working medium flowing out of the liquid drainage pipe;

and the gas pipeline is communicated with the liquid separator and the heat pipe and used for enabling the heat transfer working medium which is in a gaseous state after the liquid separator is subjected to gas-liquid separation to flow into the heat pipe for heat dissipation and condensation.

9. The heat exchanger of claim 8, further comprising:

the pumping device is arranged on the second pipeline and is positioned at the outlet side of the liquid separator and used for conveying the heat transfer working medium which is in a liquid state after being separated from the liquid in the liquid separator.

10. The heat exchanger of claim 8, further comprising:

and the valve component is arranged at the joint of the gas pipeline and the heat pipe and is used for preventing gaseous heat transfer working medium in the heat pipe from flowing into the gas pipeline.

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