CN100542855C - Body Cooling Device - Google Patents

Abstract

A heat dissipation device for a car body, which uses a circuit heat pipe to transfer the heat inside the car body to a cool place at the bottom of the car for heat dissipation. The circuit heat pipe is sealed with a working fluid. The circuit heat pipe includes at least one heat absorbing unit arranged inside the car body shell An evaporating section, at least one condensing section arranged on the bottom surface of the vehicle body as a heat dissipation unit, and a heat transfer pipeline connecting the evaporating section and the condensing section. At least one of the evaporating section and the condensing section is made of two upper and lower laminated plates, and the opposite surfaces of the two upper and lower laminated plates are respectively provided with grooves connected with the heat transfer pipeline, and the two grooves cooperate to form a heat conduction groove The heat conduction groove is provided with a capillary structure, and the working fluid flows into or out of the heat conduction groove from the heat transfer pipeline. The vehicle body cooling device of the present invention adopts heat pipes to transfer heat, has simple structure, fast heat transfer speed, large heat transfer and no noise.

Description

Body Cooling Device

【Technical field】

The invention relates to a heat dissipation device, in particular to a heat dissipation device for cooling the body of an automobile.

【Background technique】

In summer, due to long-term exposure to sunlight, the temperature inside the car parked outdoors gradually increases, and the occupants often feel extremely hot when they enter the car. Therefore, most car owners passively install window insulation. Thermal film, it is hoped to use heat-insulating film to block the entry of sunlight, but this method can only be used for part of the sunlight, and some sunlight still enters the interior of the car body and increases the temperature inside the car. Most car owners immediately start the air conditioner in the car and adjust it to the maximum load. However, this method will cause greater damage to the air conditioner in the car. Method Due to the large temperature contrast in a short period of time, it may be unfavorable to people's health, and it is easy to cause colds and so on.

Later, the industry used solar energy as energy to drive the fan to circulate the air inside the car and the air outside the car. However, due to the circulation of air inside and outside the car, this method will inevitably bring the fine dust in the air outside the car into the car. The inside is not clean, and people feel very dry and uncomfortable when breathing. Chinese patent No. 93234184.5 discloses another kind of car cooling device, which is composed of solar cells and semiconductor coolers, and the solar cells are mounted on the roof; the semiconductor cooler is mounted on the car body; Composed of a fan, the hot end of the N-P semiconductor is connected with an electric insulating plate and a heat sink in turn, and the cold end is connected with an electric insulating plate and a heat dissipation pipe, and a fan is installed in the heat dissipation pipe. The cooling device can perform low-power cooling when it is parked, and uses fans and cooling pipes to transport high-temperature air to the cold end of the N-P semiconductor for heat exchange and cooling. Since the heat exchange area of this cooling device is only at the cold end area of the N-P semiconductor, it is a relatively closed place for heat exchange. Although a fan is used to promote the flow of air and heat exchange, the heat exchanged is small and the heat exchange speed is relatively small. It is slow and produces certain noise; in addition, the cooling device has many components, which not only has high cost, but also occupies a large space and is troublesome to assemble or disassemble for maintenance.

【Content of invention】

The technical problem to be solved by the present invention is to provide a car cooling device which has a simple structure and keeps the temperature inside the car exposed to the sun in an atmosphere environment suitable for human beings.

The technical problem to be solved by the present invention is achieved through the following technical solutions: the car body cooling device of the present invention uses a circuit heat pipe to transfer the internal heat of the car body to a cool place at the bottom of the car for heat dissipation. The circuit heat pipe is sealed with a working fluid. The heat pipe includes at least one evaporating section arranged inside the vehicle body shell as a heat absorbing unit, at least one condensing section arranged on the bottom surface of the vehicle body as a heat dissipation unit, and a heat transfer pipeline connecting the evaporating section and the condensing section. At least one of the evaporation section and the condensation section is made of two upper and lower laminated plates, and the opposite surfaces of the two upper and lower laminated plates are respectively provided with grooves connected with the heat transfer pipeline, and the two grooves cooperate to form a heat conduction groove The heat conduction groove is provided with a capillary structure, and the working fluid flows into or out of the heat conduction groove from the heat transfer pipeline.

Compared with the prior art, the car body cooling device of the present invention uses a loop heat pipe to transfer the temperature inside the car to a cooler place on the bottom of the car body for heat dissipation. It has a simple structure, low cost, fast heat transfer speed, large heat transfer, and no noise .

The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

【Description of drawings】

Fig. 1 is a structural schematic diagram of a car body heat dissipation device of the present invention.

2A to D are structural schematic diagrams of various formation modes of the loop heat pipes of the vehicle body cooling device of the present invention.

【Detailed ways】

Please refer to Fig. 1, the car body cooling device of the present invention connects the interior of the car with the shade of the bottom of the car through a circuit heat pipe 1, so that the heat in the car is transferred to the shade of the bottom of the car for heat dissipation.

The loop heat pipe 1 can be integrally formed with the car body shell or separately assembled on the shell, and it includes an evaporation section 2, a condensation section 3 and a heat transfer pipeline 4 connecting the evaporation section and the condensation section. The capillary structure is evacuated to a vacuum and sealed with volatile working fluids, such as freon, acetone, hexane, etc. The evaporating section 2 is arranged on the inner side of the shell along the top of the car body as a heat absorbing unit, and the condensing section 3 is arranged on the outer side of the shell on the bottom surface of the car body and is in thermal contact with shaded air as a heat dissipation unit. The heat transfer pipeline 4 Extended up and down along the car body shell.

Please refer to Figures 2A to D, there are several ways to form the loop heat pipe 1: the way shown in Figure 2A is that the heat transfer pipeline 4 is integrally formed into a long circular tube body, and a section of it is continuously bent to form a serpentine section. The snaking section road is closely connected with the heat-absorbing plate body provided with the corresponding snaking section road groove or integrally formed with the heat-absorbing plate body, thereby forming the evaporation section 2, and the opposite section of the heat transfer pipeline 4 is also continuously bent to form each A shape extending in a meandering manner in a plane or a curved surface, and the meandering section closely fits with the heat dissipation plate body provided with a groove for the corresponding meandering section, thereby forming the condensation section 3 . The mode shown in Fig. 2B is that the evaporating section 2 and the condensing section 3 are respectively made of two upper and lower stacked plates, and the opposite surfaces of the upper and lower plates are correspondingly provided with serpentine grooves or grooves of other shapes, and the grooves There is a capillary structure inside, and the evaporating section 2 and the condensing section 3 are respectively connected to the groove and there are two openings to the outside. The two openings are respectively connected to one end of a heat transfer pipeline 4 to form the plate body of the evaporating section 2 as a heat absorber. The plate body, the plate body forming the condensation section 3 is used as the heat dissipation plate body. The method shown in FIG. 2C is an alternate use of the above two methods, that is, the evaporation section 2 is formed in the manner shown in FIG. 2A above, and the condensation section 3 is formed in the manner shown in FIG. 2B above. The method shown in FIG. 2D is just opposite to that shown in FIG. 2C , that is, the evaporation section 2 is formed in the manner shown in FIG. 2B above, and the condensation section 3 is formed in the manner shown in FIG. 2A above.

When the temperature inside the car shell exposed to the sun for a long time reaches a certain value, the heat absorbing plate body of the evaporation section 2 of the loop heat pipe 1 absorbs heat from the hot air inside the car body, so that the working fluid in the evaporation section 2 is vaporized and becomes gaseous. The working medium reaches the condensing section 3 along one side of the heat transfer pipeline 4, and exchanges heat with the shady air on the bottom surface of the car body through the cooling plate body of the condensing section 3, so that the gaseous working fluid is rapidly exothermic and liquefied due to the capillary siphon force. The bottom flows back to the evaporating section 2 along the other side of the heat transfer pipeline 4, so that the heat in the car is continuously dissipated to the bottom surface of the car due to such continuous and fast backflow.

Compared with the prior art, the present invention adopts the loop heat pipe 1, which is not only simple in structure and low in cost, but also utilizes the latent heat exchange of the working fluid to transfer heat, with fast heat transfer speed, large heat transfer and no noise.

It can be understood that in the above-mentioned embodiments of the present invention, the loop heat pipe 1 adopts a liquid-absorbing wick heat pipe as the preferred mode, and the heat pipe can also adopt a pulse heat pipe, that is, the inside of the pipeline is sealed with intersecting liquid and gas, and the evaporation section The gas absorbs heat and its pressure increases to generate a power, which makes the working fluid in the heat pipe flow back, thereby taking away the heat in the car; the evaporation section 2 of the loop heat pipe 1 is arranged on the top of the car shell as a preferred way, The evaporator section 2 can also be located at other high-temperature locations in the vehicle body.

It can also be understood that the above-mentioned heat-absorbing plate body of the present invention can be provided with enhanced heat-absorbing structures, such as several fine protrusions, etc.;

Claims (9)

1. car body heat radiator, at the bottom of utilizing loop heat pipe that the car body internal heat is transferred to car dispel the heat in the frescade, be sealed with working fluid in this loop heat pipe, this loop heat pipe comprises that at least one car body shell that is arranged at is inboard and as the evaporator section of heat absorbing units, at least onely be arranged at the car body bottom surface and as the condensation segment of heat-sink unit and be communicated with the pipe line that moves of this evaporator section and condensation segment, it is characterized in that: one of them of described evaporator section and condensation segment is individual to be become by superimposed sheet system about in the of two, the opposite face of this superimposed plate body about in the of two is corresponding respectively to be provided with and the described pipe line bonded assembly groove that moves, two groove fit form the heat conduction groove, be provided with capillary structure in this heat conduction groove, this working fluid moves the pipe line inflow or flows out this heat conduction groove from this.

2. car body heat radiator as claimed in claim 1 is characterized in that: described evaporator section and condensation segment can be integrally formed with car body, also can fit together separately, and this evaporator section is arranged at the car body inside top.

3. car body heat radiator as claimed in claim 1, it is characterized in that: described evaporator section is that one section position moving pipe line continues to crawl that the shape bending is extended and combine with a corresponding heat absorption plate body that is provided with the groove that crawls or integrally formed with the plate body that absorbs heat, described condensation segment be by described about in the of two the superimposed sheet system become, the opposite face of this superimposed plate body about in the of two is corresponding to be provided with described heat conduction groove.

4. car body heat radiator as claimed in claim 1, it is characterized in that: described evaporator section be by described about in the of two the superimposed sheet system become, the opposite face of this superimposed plate body about in the of two is corresponding to be provided with described heat conduction groove, this heat conduction groove is the shape that crawls, this about in the of two superimposed plate body be communicated with this heat conduction groove and outwards be provided with two openings.

5. car body heat radiator as claimed in claim 1, it is characterized in that: described condensation segment is continue the to crawl shape bending and combine with a corresponding heat radiation plate body that is provided with the groove that crawls or integrally formed with the plate body that dispels the heat of one section position moving pipe line, described evaporator section be by described about in the of two the superimposed sheet system become, the opposite face of this superimposed plate body about in the of two is corresponding to be provided with described heat conduction groove.

6. car body heat radiator as claimed in claim 1, it is characterized in that: described condensation segment be by described about in the of two the superimposed sheet system become, the opposite face of this superimposed plate body about in the of two is corresponding to be provided with described heat conduction groove, this heat conduction groove is the shape that crawls, this about in the of two superimposed plate body be communicated with this heat conduction groove and outwards be provided with two openings.

7. car body heat radiator as claimed in claim 3 is characterized in that: the heat absorption plate body of described evaporator section is provided with reinforcement heat-absorbing structure such as several fine projectioies, and the superimposed plate body about in the of two of described condensation segment is provided with enhance heat structures such as radiating gill or projection.

8. car body heat radiator as claimed in claim 5 is characterized in that: the superimposed plate body about in the of two of described evaporator section is provided with reinforcement heat-absorbing structure such as several fine projectioies, and the heat radiation plate body of described condensation segment is provided with enhance heat structures such as radiating gill or projection.

9. car body heat radiator as claimed in claim 1 is characterized in that: described loop heat pipe can adopt wick type heat pipe or pulsed heat pipe.

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