CN219200138U

CN219200138U - Novel pulsation heat pipe radiator

Info

Publication number: CN219200138U
Application number: CN202222505093.6U
Authority: CN
Inventors: 童保健
Original assignee: Huajing Micro Nano Technology Suzhou Co ltd
Current assignee: Huajing Micro Nano Technology Suzhou Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-06-16
Anticipated expiration: 2032-09-20

Abstract

The utility model discloses a pulsating heat pipe radiator. The radiator comprises a pulsating heat pipe formed by at least one microchannel parallel pipe, fins, a fan, an air duct and a metal block. The micro-channel parallel pipes are filled with working medium to form a pulsating heat pipe, the micro-channel parallel pipes are divided into an evaporation section and a condensation section according to the difference of heat absorption and heat release functional areas, the fins are positioned at the condensation section of the pulsating heat pipe, the metal block is arranged at the evaporation section of the pulsating heat pipe, an included angle which is larger than 90 degrees and smaller than 180 degrees is formed between the evaporation section and the condensation section, the fan provides power for the air flow of the fins of the condensation section, the air channel is arranged between the fan and the condensation section, a circulation channel is provided for the air passing through the fins of the condensation section, and the air channel wall also provides a fixed position for the fan in part of application.

Description

Novel pulsation heat pipe radiator

Technical Field

The utility model relates to a radiator field, in particular to novel pulsation heat pipe radiator.

Background

Pulsating heat pipes were proposed in the 90 s of the 20 th century, consisting of several straight pipes and bends, and relying on the pressure difference generated by the alternate evaporation expansion and condensation contraction of the working medium in the pipes and the pressure imbalance between adjacent pipes to provide the overall driving force. Under the condition of sufficient oscillation, the gravity has less influence on the operation of the heat pipe, but in the actual operation starting process, when the heat flux density does not reach the condition of sufficient oscillation, the gravity has larger influence on the operation of the heat pipe. And when the evaporation section and the condensation section are positioned at the same horizontal position, the heat pipe can not transfer heat effectively, so that the use of the pulsating heat pipe is limited.

Disclosure of Invention

In order to solve the problems, the utility model provides a novel pulsation heat pipe radiator.

The novel pulsating heat pipe radiator consists of at least one pulsating heat pipe formed by a micro-channel parallel pipe, fins, a fan, an air channel and a metal block, wherein the micro-channel parallel pipe is filled with working medium and is divided into an evaporation section and a condensation section, the fins are positioned on the condensation section of the pulsating heat pipe, the metal block is positioned on the evaporation section of the pulsating heat pipe, an included angle which is more than 90 degrees and less than 180 degrees is formed between the evaporation section and the condensation section, the fan provides power for the air flow of the fins of the condensation section, the air channel is positioned between the fan and the condensation section, and the air channel provides a circulation channel for the air passing through the fins of the condensation section and/or provides a fixed position for the fan.

In some embodiments, the air flow direction of the fan is parallel to the air flow direction of the fins.

In some embodiments, the fan air flow direction is at an angle greater than 0 degrees to the fin air flow direction.

In some embodiments, the air duct is provided with a fixing hole, and the fan is arranged on the fixing hole.

In some embodiments, at least one plane of the metal block is in contact with a heat source, which is capable of transferring heat from the heat source to the fins through the working medium in the parallel tubes of the micro-channels, and the fan is capable of providing power to direct air onto the fins to absorb heat and then directly discharge the heat to the environment.

In some embodiments, the angle between the evaporator section and the condenser section is 135 degrees.

Drawings

FIG. 1 is a schematic top view of a novel pulsating heat pipe;

FIG. 2 is a schematic diagram of a front view of the novel pulsating heat pipe of FIG. 1;

FIG. 3 is a schematic side view of the novel pulsating heat pipe of FIG. 1;

FIG. 4 is a schematic top view of another heat dissipation method of the novel pulsating heat pipe of FIG. 1;

fig. 5 is a schematic diagram of a front view structure of the novel pulsating heat pipe of fig. 4.

In the figure: fins 1, parallel pipes 2, fans 3, metal blocks 4 and air channels 5

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings.

Fig. 1 shows a top view structure of a novel pulsating heat pipe in this embodiment, fig. 2 shows a front view structure of the novel pulsating heat pipe in fig. 1, and fig. 3 shows a side view structure of the novel pulsating heat pipe in fig. 1. As shown in fig. 1-3, the radiator is composed of a pulsating heat pipe formed by at least one microchannel parallel tube 2, fins 1, a fan 3, an air duct 5 and a metal block 4. The micro-channel parallel tube 2 is filled with working medium, the micro-channel parallel tube 2 is divided into an evaporation section and a condensation section, the fins 1 are positioned at the condensation section of the pulsating heat pipe, and the metal block 4 is positioned at the evaporation section of the pulsating heat pipe.

When the heat pipe evaporator is placed, the pulsating heat pipe evaporator section is placed at the lowest end of the radiator, the condensing section is higher than the evaporating section, an included angle is formed between the condensing section and the evaporating section, and the included angle is larger than 90 degrees and smaller than 180 degrees. In the present embodiment, the included angle is 135 degrees.

The prior scientific technology can be utilized, the working medium is vacuumized and filled, and then the pulsating heat pipe is sealed, so that the working medium flows in the microchannel parallel pipe to form the pulsating heat pipe.

The inner cross-sectional hole of the microchannel parallel tube 2 can be rectangular, square, round, triangular, trapezoidal, polygonal and the like, and the diameter is generally between 0.3 and 3mm, preferably, the inner cross-sectional hole is square in the example, and the side length of the square is 1mm.

The working medium is generally selected from water, ethanol, acetone, ammonia, freon and the like according to the situation, and the liquid filling amount of the working medium is generally 30-80% of the internal volume of the microchannel parallel tube 2. According to compatibility, the wall of the heat pipe adopts aluminum alloy, and the internal filling working medium is R134a.

The pulsating heat pipe radiator structure in fig. 1. In the radiator, the microchannel parallel tube 2 can be arranged in a serpentine shape (a plurality of straight tubes can be also arranged according to the actual situation) which is bent for a plurality of times, a pulsating heat pipe is formed by vacuumizing and filling working medium, and a plurality of fins 1 are respectively arranged at straight condensing sections between the bends of the microchannel parallel tube to improve the heat dissipation capacity of the microchannel parallel tube.

Therefore, heat generated by the electronic device can be transferred to a pulsating heat pipe formed by the micro-channel parallel pipes 2 through the metal block 4, the heat pipe is transferred to the fins 1, the fan 3 provides power, and the air absorbs heat through the air duct 4 and the fins 1 and diffuses the heat into the air.

FIG. 4 shows a top view of another heat dissipation method of the novel pulsating heat pipe of FIG. 1; fig. 5 shows a front view of the novel pulsating heat pipe of fig. 4. As shown in fig. 4-5, since the actual application may be faced with various situations, it is possible to deal with placing the fan 3 and the air duct 5 at different positions, such as placing the air duct 5 above the condensing section, and placing the fan 3 on the air duct 5 to take port heat dissipation.

The pulsating heat pipe radiator is described above. It will be apparent to those skilled in the art that several modifications and improvements can be made without departing from the inventive concept, which falls within the scope of the present pulsating heat pipe radiator.

Claims

1. A novel pulsating heat pipe radiator is characterized in that: the radiator consists of a pulsating heat pipe, fins (1), a fan (3) and an air duct (5), wherein the pulsating heat pipe is formed by at least one micro-channel parallel pipe (2), the micro-channel parallel pipe (2) is internally filled with working medium and is divided into an evaporation section and a condensation section, the fins (1) are positioned at the condensation section of the pulsating heat pipe, the metal block (4) is positioned at the evaporation section of the pulsating heat pipe, an included angle which is larger than 90 degrees and smaller than 180 degrees is formed between the evaporation section and the condensation section, the fan (3) provides power for the air flow of the fins (1) of the condensation section, the air duct is positioned between the fan (3) and the condensation section, and the air duct provides a circulation channel for the air passing through the fins of the condensation section and/or provides a fixed position for the fan (3).

2. The novel pulsating heat pipe radiator as claimed in claim 1, wherein: the air flow direction of the fan (3) is parallel to the air flow direction of the fins (1).

3. The novel pulsating heat pipe radiator as claimed in claim 1, wherein: the air flow direction of the fan (3) and the air flowing direction of the fin (1) form an included angle which is larger than 0 degrees.

4. The novel pulsating heat pipe radiator as claimed in claim 1, wherein: the air duct (5) is provided with a fixing hole, and the fan (3) is arranged on the fixing hole.

5. A novel pulsating heat pipe radiator as claimed in any of claims 1-4, wherein: at least one plane of the metal block (4) is in contact with a heat source, heat of the heat source can be transferred to the fins (1) through working media in the microchannel parallel tubes (2), and the fan (3) can provide power to guide air to the fins (1) to absorb the heat and then directly discharge the heat to the environment.

6. The novel pulsating heat pipe radiator as claimed in claim 5, wherein: the included angle between the evaporation section and the condensation section is 135 degrees.