JP4380138B2 - Vehicle heat dissipation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat radiator for vehicle capable of radiating the heat of an interior material in a cabin heated by sunshine or the like in the stopping of an engine. <P>SOLUTION: This heat radiator for vehicle for radiating the heat of an instrument panel 30 or the like within the cabin comprises a heat pipe 200 having one end connected to a cabin air conditioning evaporator 110. The heat pipe 200 is extended to the vicinity of the instrument panel 30 in the cabin. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle heat radiating device for radiating heat from a heat radiating member in a vehicle compartment, and more particularly to a vehicle heat radiating device for radiating heat from an interior material of a vehicle compartment heated by solar radiation.
[0002]
[Prior art]
Various devices are known as conventional vehicle interior air conditioners. For example, a refrigerant heat exchange part and an air heat exchange part of an evaporator are separated, and both parts are separated by a heat pipe in which hydraulic fluid is enclosed. A connected vehicle air conditioner is known (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-206049 (page 3-5, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, the vehicle air conditioner described in the above publication is merely an effect of lowering the room temperature by simply sending cool air into the vehicle interior, as in the case of a normal vehicle air conditioner. Because it does not dissipate heat from heat-dissipating members such as instrument panels when the vehicle air conditioner is not in operation, such as when parking, the heat-dissipating member must be relatively hot in parking conditions under hot weather. Can not be prevented.
[0005]
[Means for Solving the Problems]
The present invention for solving the above-described problems and achieving the object is a vehicle heat dissipating device for dissipating heat from a heat dissipating member in a vehicle compartment, and one end of which is connected to an air conditioner evaporator. The vehicle heat dissipation device is characterized in that the transmission member is extended to the vicinity of the heat dissipation member in the vehicle compartment. In particular, the heat transfer means is one or more heat pipes in which a working fluid is enclosed. The part of the heat pipe that requires a heat radiating member forms a heat pipe evaporating part that evaporates the working fluid, and the part of the heat pipe on the side of the air conditioning evaporator forms a heat pipe condensing part that condenses the working fluid. The heat pipe condensing unit is attached through the cooling pipe or the refrigerant pipe of the vehicle interior air conditioning evaporator. .
[0006]
【The invention's effect】
According to the present invention, the heat transfer member, one end of which is connected to the evaporator for the vehicle interior air conditioner, extends to the vicinity of the heat radiating member in the vehicle interior, so that the vehicle interior air conditioner is not operated when the vehicle interior air conditioner is not in operation. An evaporator can be used as a radiator. Therefore, for example, it is possible to prevent the heat dissipating member from becoming relatively hot even in a parking state under hot weather.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Exemplary embodiments of a heat radiating device for a vehicle according to the present invention will be described below in detail with reference to the accompanying drawings. The present invention radiates heat from a heat radiating member such as an interior material in a vehicle cabin that is easily heated by solar radiation. In the following embodiments, an instrument panel will be described as an example of a heat radiating member. However, the present invention is not limited to this case, and the present invention can also be used when heat is radiated from various interior materials such as the upper part of the instrument panel, the center console, the A pillar, the ceiling interior material, and the handle.
[0008]
(First embodiment)
The vehicle heat dissipation device according to the present embodiment has a structure in which one end of a heat pipe connected to a vehicle interior air conditioning evaporator is extended and laid to the vicinity of a heat dissipation member such as an instrument panel in the vehicle interior. is there. A working fluid is sealed inside the heat pipe, and the heat radiating member side portion of the heat pipe constitutes a heat pipe evaporating portion for evaporating the working fluid, and the heat pipe portion on the evaporator side for vehicle interior air conditioning Forms a heat pipe condensing part for condensing the working fluid. Hereinafter, the present embodiment will be described with reference to the drawings.
[0009]
FIG. 1 is a diagram showing an outline of a vehicle heat dissipation device according to this embodiment. The vehicle heat dissipation device has a plurality of heat pipes (heat transfer members) 200a to 200f (hereinafter collectively referred to as heat pipes 200), one end of which is connected to the vehicle interior air conditioning evaporator 100. These heat pipes 200 are extended and laid on the back side of the instrument panel 300 which is a heat radiating member in the vehicle interior. The number of heat pipes 200 is not limited to the case of FIG.
[0010]
The evaporator 100 not only constitutes a part of a vehicle air conditioner (hereinafter referred to as an “air conditioner”) for sending cold air into the vehicle interior and adjusting the vehicle interior temperature, as in the case of a conventional evaporator, During operation, it also functions as a radiator for radiating heat conducted from the instrument panel 300 in the vehicle interior via the vehicle interior heat pipe 200. That is, the evaporator 100 has a role as a radiator as well as a role as a normal evaporator 100. The evaporator 100 is installed below the back side of the instrument panel 300 in the same manner as a normal evaporator.
[0011]
The heat pipe 200 is a tubular body made of a heat conductive material, and is preferably made of a metal material having high heat conductivity. For example, the heat pipe 200 is made of a metal material such as aluminum, copper, or iron. A working fluid is sealed in the heat pipe 200. As the working fluid, for example, water, ammonia, or an alcohol-based heat medium is used, but is not limited thereto.
[0012]
One end of the heat pipe 200 is directly connected to the evaporator 100 or thermally connected to the evaporator 100 via a heat pipe installation base described later. The instrument panel 300 and the evaporator 100 are relatively close to each other. The heat pipe 200 having one end connected to the evaporator 100 is preferably extended to the back side of the instrument panel 300 at a substantially shortest distance. In addition, although various connection forms can be considered for the connection between the heat pipe 200 and the evaporator 100, details thereof will be described later.
[0013]
The heat pipe 200 having one end connected to the evaporator 100 is extended and laid to the vicinity of the back side of the instrument panel 300 as shown in FIG. Preferably, as shown in FIG. 1, the plurality of heat pipes 200 a to 200 f are provided in parallel so as to reach the entire back surface of the instrument panel 300, and the heat of the entire region of the instrument panel 300 is evenly distributed. It is configured to dissipate heat.
[0014]
In the portion of the heat pipe 200 that extends to the vicinity of the back side of the instrument panel 300, the working fluid is evaporated by the instrument panel 300 that is heated by solar radiation or the like. Thus, the part extended to the back surface side vicinity of the instrument panel 300 among the heat pipes 200 makes the heat pipe evaporation part 201 which evaporates a working fluid. On the other hand, the working fluid condenses at a location connected to the evaporator 100 in the heat pipe 200. This is because the evaporator 100 has a large surface area and is easily exchanged with the outside because a large number of fins and the like are arranged, so that a relatively low temperature can be maintained. Thus, the location connected to the evaporator 100 in the heat pipe 200 forms a heat pipe condensing unit 202 that condenses the working fluid.
[0015]
Next, the relationship between the instrument panel 300 and the heat pipe 200 in the present embodiment will be described. Various methods are conceivable for connecting the instrument panel 300 and the heat pipe 200. Here, two methods shown in FIGS. 2 and 3 will be described as examples.
[0016]
FIG. 2 is a diagram illustrating an example of the connection between the instrument panel 300 and the heat pipe 200.
[0017]
In the example of FIG. 2, the instrument panel 300 has a laminated structure in which an outer skin 310, a buffer material 320, and a skeleton material 330 are arranged in this arrangement order. The skin 310 is a member located on the outermost surface of the instrument panel 300 and is made of a resin such as polyvinyl chloride or ABS resin (acrylonitrile / butadiene / styrene copolymer). The buffer material 320 is made of polyurethane or the like, and is rich in elastic force. The skeletal material 330 is made of a reinforced resin in which glass fiber is mixed with polypropylene. However, the skin 310, the buffer material 320, and the skeleton material 330 may be made of other materials. For example, the skin 310 may be leather, fabric, or the like. Note that the skin 310 or the lamination of the skin 310 and the buffer material 320 forms the surface layer of the instrument pamel 300.
[0018]
The heat pipe 200 is laid on the back side of the skin 310, for example, in the buffer material 320. Preferably, the plurality of heat pipes 200a to 200e are arranged in parallel to each other. For example, a plurality of heat pipes 200a to 200e are arranged at a predetermined interval, and in that state, by filling and solidifying a polyurethane resin as a raw material of the buffer material 320, the buffer material 320 as shown in FIG. A structure in which the heat pipes 200a to 200e are embedded can be realized.
[0019]
FIG. 3 is a diagram illustrating another example of the connection between the instrument panel 300 and the heat pipe 200.
[0020]
In the example of FIG. 3, it further includes a high thermal conductive material 340 (back surface member) that covers the back surface side of the surface layer, that is, the back surface side of the skin 310 or the buffer material 320. For example, in the case of FIG. 3, the instrument panel 300 has a laminated structure in which an outer skin 310, a buffer material 320, a high thermal conductive material 340, and a skeleton material 330 are arranged in this order. The high thermal conductive material 340 is desirably a metal material such as aluminum, copper, or an alloy thereof, but is not limited thereto. The high heat conductive material 340 is assembled with the heat pipes 200a to 200e. For example, the heat pipes 200 a to 200 e are welded to the high thermal conductive material 340. This high heat conductive material 340 is a structure for enabling uniform heat collection from the entire interior material such as the instrument panel 300, and prevents partial heat dissipation to the vehicle interior due to temperature unevenness. .
[0021]
Next, the connection relationship between the heat pipe 200 and the evaporator 100 will be described.
[0022]
FIG. 4 is a diagram showing an example of connection between the heat pipe 200 and the evaporator 100 in the present embodiment.
[0023]
The evaporator 100 shown in FIG. 4 is a so-called stacked evaporator. The basic structure of the evaporator 100 shown in FIG. 4 is the same as the structure of the ordinary evaporator 100 and will not be described in detail. However, in brief, the evaporator 100 includes a plurality of cooling pipes 101, And fins 102 provided between adjacent cooling pipe strips 101. Although the cooling tube strip 101 is shown as a single plate in the figure, in practice, two metal plates having traces of depressions on one side are superposed as a set and joined together in an airtight and liquid tight manner. It is a plate-like tube made and has a flat channel for flowing a refrigerant inside.
[0024]
Here, in the present embodiment, as shown in FIG. 4, one end of the heat pipe 200 is connected so as to penetrate the cooling pipe 101. As a result, the heat pipe 200 and the cooling pipe strip 101 are in thermal contact. The heat pipe 200 and the cooling pipe band 101 are independent from each other and are isolated while maintaining mutual airtightness. Therefore, the working fluid in the heat pipe 200 and the refrigerant in the cooling pipe band 101 are separated from each other. The structure is not mixed.
[0025]
The vehicle heat dissipation device of the present embodiment described above has the following effects. When the vehicle is left under the sun and the instrument panel 300 is heated by solar radiation, the heat of the instrument panel 300 is transmitted to the heat pipe 200 through the skin 310, the buffer material 320, and the like. In particular, by adopting a structure in which the skin 310 of the instrument panel 300 or the back surface side (the back surface side of the surface layer) of the buffer material 320 is covered with a high heat conductive material 340 (back surface member) and the heat pipe 200 is assembled to the high heat conductive material 340. The heat of the entire area of the instrument panel 300 is conducted to the heat pipe 200.
[0026]
In the heat pipe 200, the working fluid rises toward the instrument panel 300 due to a capillary phenomenon or the like. Then, the working fluid evaporates in a portion of the heat pipe 200 on the instrument panel 300 side, that is, in the heat pipe evaporation unit 201. And when the working fluid in the heat pipe 200 vaporizes, the heat of the instrument panel 300 is absorbed.
[0027]
On the other hand, the evaporator 100 is not directly exposed to sunlight, and has many fins 102 and has a large surface area, so that the temperature is kept relatively low even when the air conditioner is not in operation. Accordingly, when the vaporized working fluid moves to the portion of the heat pipe 200 on the evaporator 100 side, it is condensed and returned to the liquid. That is, a portion of the heat pipe 200 on the evaporator 100 side functions as a heat pipe condensing unit that condenses the working fluid. Heat generated when the working fluid is condensed is released to the outside by using the evaporator 100 when the air conditioner is not in operation as a radiator.
[0028]
Due to the above action, the heat of the instrument panel 300 heated by solar radiation is radiated to the evaporator 100 side sequentially through the heat pipe 200.
[0029]
On the other hand, the above configuration has a useful effect even when the air conditioner is in operation.
[0030]
Specifically, when the user returns to the vehicle and operates the air conditioner, the passenger compartment is air-cooled according to a normal refrigeration cycle. At this time, the evaporator 100 functions as a cooler and has a low temperature.
[0031]
And since the heat pipe 200 is connected to the evaporator 100, the heat pipe 200 is also cooled. Further, since the heat pipe 200 is extended to the vicinity of the interior material such as the instrument panel 300 and the seat, the interior material such as the instrument panel 300 and the seat is passed through the cooled heat pipe 200. It is cooled directly. Moreover, by cooling the interior material, radiation cooling occurs, and the temperature in the passenger compartment can be lowered.
[0032]
As described above, the above-described vehicle heat dissipation device can exhibit an effect of directly cooling the interior materials such as the instrument panel 300 and the seat seat through the heat pipe 200 from the evaporator 100 functioning as a cooler. .
[0033]
As described above, according to the present embodiment, the following effects can be obtained.
[0034]
(A) Since the heat transfer member connected at one end to the vehicle interior air conditioning evaporator 100 is extended to the vicinity of the heat radiating member in the vehicle interior, the engine is stopped as in the parking state under hot weather. However, since the heat is dissipated to the vehicle interior air conditioning evaporator side through the heat transfer member, it is possible to prevent the phenomenon that the heat radiating member such as the interior member becomes high temperature even in the parking state under the hot sun. .
[0035]
(A) Since the heat transfer member having one end connected to the vehicle interior air conditioning evaporator 100 is extended to the vicinity of the heat radiating member in the vehicle interior, the vehicle interior air conditioning evaporator when the vehicle interior air conditioner is not in operation Can also be used as a radiator. That is, the heat of the heat dissipating member is transmitted to the vehicle interior air conditioning evaporator through the heat transfer member and radiated. Therefore, the burden on the air conditioner can be reduced and fuel consumption can be prevented from deteriorating, compared to the case where the heat radiating member is cooled by the cold air from the air conditioner.
[0036]
(C) By connecting the heat transfer member to the evaporator, heat can be dissipated when the vehicle interior air conditioner is not in operation, and direct cooling of the heat dissipating member can be performed when the vehicle interior air conditioner is in operation. That is, when the vehicle interior air conditioner is in operation, in addition to cooling with cold air, the interior materials such as the instrument panel 300 and the seat seat can be directly cooled. The temperature can be lowered.
[0037]
(D) Rather than providing a dedicated heat sink separate from the vehicle interior air conditioner evaporator 100, the vehicle interior air conditioner evaporator can also be used as a heat sink, eliminating the need for a heat sink installation location. Miniaturization and cost reduction can be realized. Further, the evaporator for vehicle interior air conditioning is provided with a large number of fins and has a large surface area, so heat can be efficiently radiated to the outside.
[0038]
(E) The heat dissipation effect is high compared to the case where a car body outer plate that is easily heated by solar radiation is used as a radiator. In particular, the vehicle interior air conditioning evaporator 100 has a heat radiation area several times that of the outer plate of the vehicle body due to the effect of fins or the like, and therefore has a high heat radiation effect. Moreover, since the vehicle interior air conditioning evaporator 100 is often installed at a position relatively close to the instrument panel 300 or the like, the thermal energy absorbed by the instrument panel 300 is released to the outside of the vehicle compartment at a substantially shortest distance. It is possible to prevent heat radiation into the vehicle interior.
[0039]
(F) Since the heat pipe in which the working fluid is enclosed is used as the heat transfer means, effective heat transfer is possible by evaporation of the working fluid on the heat radiating member side and condensation of the working fluid on the evaporator side. In addition, no power source or driving force is required for heat transfer using the heat pipe, so there is no burden on the battery. Further, since the working fluid is sealed in the heat pipe, handling becomes easy, and there is no possibility that the refrigerant and the working fluid in the evaporator for the vehicle interior air conditioning are mixed.
[0040]
(G) Since the heat radiation member has a back surface member made of a highly heat-conductive material that covers the entire back surface of the surface layer, and the heat pipe is assembled to the back surface member, the heat of the entire heat radiation member can be radiated.
[0041]
(H) Since the evaporator side (heat pipe condensing part) of the heat pipe is attached through the cooling pipe of the evaporator for the vehicle interior air conditioning, the part through which the heat pipe penetrates during the manufacture of the vehicle interior air conditioning evaporator Except for the point that is molded, the configuration of a normal interior air conditioning evaporator can be diverted.
[0042]
(Second Embodiment)
The vehicle heat dissipating device according to the present embodiment is almost the same as the vehicle heat dissipating device according to the first embodiment, but the heat dissipating plate is provided along a plurality of cooling pipes of the vehicle interior air conditioning evaporator. And a heat pipe connection base to which these heat radiating plates are connected, and the heat pipe condensing part is attached to the heat vip connection base. Hereinafter, the present embodiment will be described with reference to the drawings, but description of portions common to the first embodiment will be omitted.
[0043]
FIG. 5 is a diagram illustrating a structure of the vehicle heat dissipation device according to the present embodiment, and is a diagram illustrating an example of a connection between a heat pipe and an evaporator. The structure on the instrument panel 300 side of the vehicle heat dissipation device according to the present embodiment is the same as that of the first embodiment.
[0044]
In the vicinity of the evaporator 100, there is a heat pipe connection base 400 for collecting the heat pipe condensing parts of the plurality of heat pipes 200. One end of a plurality of heat pipes 200 a to 200 d is connected to the heat pipe connection base 400. The heat pipe connection base 400 is made of a metal material such as aluminum, copper, or iron, and is preferably made of the same material as the heat pipes 200a to 200d from the viewpoint of heat conduction and bonding. For example, heat pipes 200a to 200d and heat pipe connection base 400 are connected by welding.
[0045]
FIG. 6 is an example of an enlarged view of the evaporator 100, and FIG. 7 is another example of the enlarged view of the evaporator 100. A plurality of heat sinks 410 are attached to the heat pipe connection base 400. The heat sink 410 extended from the heat pipe connection base 400 has substantially the same shape as the cooling pipe strip 101, and along each cooling pipe strip of the evaporator 100 as shown in FIG. 6 or FIG. Arranged in parallel. Preferably, the heat sink 410 is extended from the heat pipe connection base 400.
[0046]
FIG. 6 is a diagram illustrating an example of an arrangement relationship between the heat radiating plate 410, the cooling tube strip 101, and the fins 102. According to the configuration shown in FIG. 6, the heat radiating plate 410 is connected to the adjacent cooling pipe strip 101 via the fins 102. That is, in the evaporator 100, the cooling pipe strip 101, the fins 102, the heat radiation plate 410, the fins 102, and the cooling pipe strips 101 are arranged in this order. In other words, the cooling tube strip 101 and the heat radiating plate 410 are overlapped with the fins 102 provided therebetween.
[0047]
FIG. 7 is a diagram illustrating another example of the arrangement relationship of the heat radiating plate 410, the cooling tube strip 101, and the fins 102. According to the configuration shown in FIG. 7, the heat radiating plate 410 and the cooling tube strip 101 are directly laminated to form a laminate, and a plurality of adjacent laminates are connected via the fins 102. 6 differs from the case of FIG. 6 in that the cooling tube strip 101 and the heat radiating plate 410 are directly overlapped.
[0048]
In the example shown in FIGS. 6 and 7, the cooling tube strips 101 and the heat radiating plates 410 are alternately arranged, and the number of the cooling tube strips 101 and the heat radiating plates 410 is equal. The arrangement of 410 is not limited to this case. That is, instead of disposing the heat radiating plate 410 for each cooling tube strip 101, the heat radiating plate 410 may be disposed at a ratio of one heat radiating plate 410 to the plurality of cooling tube strips 101.
[0049]
According to the present embodiment, heat of heat pipe 200 is transmitted to heat radiating plate 410, and heat is further radiated from heat radiating plate 410 to fins 102 and cooling pipe strip 101. Therefore, even when the heat pipe 200 is connected to the evaporator 100 according to the configuration of the present embodiment, heat from the instrument panel 300 is sequentially transmitted to the evaporator 100 through the evaporator 100 and is radiated to the outside through the evaporator 100. The
[0050]
In addition, when there are a large number of heat pipes 200, it is desirable to provide the heat pipe connection base 400 that aggregates the plurality of heat pipes 200 from the viewpoint of facilitating attachment, but the heat pipe connection base 400 is not provided. A configuration can also be adopted.
[0051]
FIG. 8 shows a schematic configuration of the end of the heat pipe on the evaporator 100 side, that is, the heat pipe condensing unit 202 when directly connecting to the evaporator 100. The heat pipe condensing unit 202 is formed in a plate shape having the same shape as the cooling tube band, and the plate-shaped portion is used as the heat radiating plate 410. In this case, the plate-shaped end, the cooling pipe strip 101 and the fins 102 are overlapped in the same manner as shown in FIG. 6 or FIG.
[0052]
According to the present embodiment, in addition to the effects (a) to (ki) in the case of the first embodiment, the following effects can be obtained.
[0053]
According to the configuration having the heat pipe connection base, a plurality of heat pipes can be aggregated and connected to the vehicle interior air conditioning evaporator side, so that the connection to the vehicle interior air conditioning evaporator side becomes efficient. .
[0054]
(E) Further, according to the configuration in which a heat sink having substantially the same shape as the cooling tube strip is extended from the heat pipe connection base, and the radiation plate, the cooling tube strip and the fin are overlapped, The heat pipe side can be brought into thermal contact with the heat dissipation effect. Since heat diffusion proceeds throughout the entire vehicle interior air conditioning evaporator and heat is radiated to the outside, the efficiency of heat radiation from the vehicle interior air conditioning evaporator to the outside increases.
[0055]
(Third embodiment)
The vehicle heat dissipating device according to the present embodiment is almost the same as the vehicle heat dissipating device according to the first embodiment, but the evaporator pipe side portion of the heat pipe, that is, the heat pipe is connected to the refrigerant pipe of the vehicle interior air conditioning evaporator. A pipe condensing part is attached. Hereinafter, the present embodiment will be described with reference to the drawings, but description of portions common to the first embodiment will be omitted.
[0056]
FIG. 9 is a diagram showing a structure for heat dissipation for a vehicle according to the present embodiment, and is a diagram showing an example of connection between the heat pipe 200 and the evaporator. The structure on the instrument panel 300 side of the vehicle heat dissipation device according to the present embodiment is the same as that of the first embodiment.
[0057]
As shown in FIG. 9, the evaporator 100 is provided with a refrigerant pipe 103 in the same manner as a normal evaporator. The refrigerant pipe 103 is a pipe for sending the refrigerant into the refrigerant pipe 101 or taking out the refrigerant that has passed through the refrigerant pipe 101. The refrigerant pipe 103 is also referred to as a refrigerant capacitor pipe, a refrigerant tank, or a refrigerant take-out pipe.
[0058]
A heat pipe 200 is provided along the axial direction of the refrigerant pipe 103. For example, the refrigerant pipe 103 is passed through the heat pipe 200. In other words, the heat pipe 200 is provided inside the cooling pipe 103 along the cooling pipe 103.
[0059]
According to the present embodiment, the heat of the heat pipe 200 is radiated to the refrigerant pipe 103 that constitutes a part of the evaporator 100. Therefore, even when the heat pipe 200 is connected to the evaporator 100 according to the configuration of the present embodiment, heat from the instrument panel 300 is sequentially transmitted through the heat pipe 200 and is radiated to the outside through the evaporator 100.
[0060]
In addition, although FIG. 9 demonstrated the case where the heat pipe 200 had penetrated in the refrigerant | coolant pipe 103, the vehicle thermal radiation apparatus of this embodiment is not restricted to this case. For example, unlike the case shown in FIG. 9, the peripheral surface of the heat pipe 200 and the peripheral surface of the refrigerant pipe 103 may be connected and extended in parallel with each other.
[0061]
According to the present embodiment, in addition to the effects (a) to (ki) in the case of the first embodiment, the following effects can be obtained.
[0062]
(Sa) According to the configuration in which the heat pipe condensing part is attached to the refrigerant pipe of the evaporator for the vehicle interior air conditioning, the refrigerant and the heat pipe condensing part in the vicinity of the take-off port, which are relatively low in temperature in the vehicle interior air conditioning evaporator, are heated. Because it can be replaced, the heat dissipation effect is high.
[0063]
(Fourth embodiment)
In addition to the mechanical configuration of the first, second, or third embodiment, the vehicle heat dissipating device according to the present embodiment further includes each part of the air conditioner, specifically, a foot door and an intake door described later. And control means for controlling the blower fan and the like. In addition, since the structure of the evaporator 100, the heat pipe 200, and the instrument panel 300 is the same as that of the case of any one of the 1st-3rd embodiment mentioned above, detailed description is abbreviate | omitted.
[0064]
FIG. 10 is a block diagram showing the configuration of the vehicle heat dissipation device of the present embodiment. Note that FIG. 10 does not show the mechanical configuration of the heat pipe 200 or the like.
[0065]
The vehicle heat dissipation device according to the present embodiment includes a control unit 510, a storage unit 520, and a temperature sensor 530. The foot door 610, the intake door 620, and the blower fan 630 of the air conditioner 600 that are attached to the vehicle are set in a predetermined manner. It has a function of giving a control instruction for setting a state.
[0066]
The control unit 510 is a CPU and functions as a determination unit that performs various determinations and a control unit that performs various controls. Specifically, control unit 510 controls the opening (position) of intake door 620, the opening of foot door 610, and blower fan 630, as will be described later. Control unit 510 may further control the opening degree of a face door and a differential door, which will be described later. Control unit 510 includes a timer 511. Control unit 510 may also be used as a normal CPU (not shown) of air conditioner device 600.
[0067]
Storage unit 520 is a memory that stores various types of data and information, and a partial area of a memory (not shown) for air conditioner device 600 may be used as storage unit 520.
[0068]
The temperature sensor 530 is a measuring unit that measures the ambient temperature of the instrument panel 300. Here, the “ambient temperature” includes the temperature inside the vehicle interior and / or the temperature outside the vehicle. The surface temperature of the instrument panel 300 itself can also be used as the ambient temperature.
[0069]
A vehicle provided with the air conditioner 600 is usually provided with a temperature sensor group for measuring the temperature inside and / or outside the vehicle. Therefore, the temperature sensor group for the air conditioner apparatus 600 can also be used as the temperature sensor 530 of the present embodiment. However, the temperature sensor group for the vehicle air conditioner 600 and the temperature sensor 530 of the vehicle heat dissipation device in the embodiment may be provided separately.
[0070]
FIG. 11 is a diagram illustrating a schematic configuration of the air conditioner apparatus 600. The air conditioner 600 is basically the same as a normal air conditioner.
[0071]
The intake door 620 is a door for selectively opening and closing the outside air introduction port 621 and the inside air introduction port 622. In the mode in which the outside air introduction port 621 is opened (outside air mode), the opening of the inside air introduction port 622 is blocked by the intake door 620. On the other hand, in the mode in which the inside air introduction port 622 is opened (inside air mode), the opening of the outside air introduction port 621 is blocked by the intake door 620.
[0072]
The foot door 610, the face door 640, and the differential door 650 are mode switching doors for opening and closing each outlet. The foot door 610 is a door for opening and closing an air outlet (lower air outlet) 611 provided on the foot side of the occupant. The face door 640 is a door for opening and closing an instrument panel outlet 641 provided in the instrument panel 300 on the upper body side of the occupant. The differential door 650 is a door for opening and closing a DEF outlet provided at an end of the instrument panel 300 on the windshield (not shown) side.
[0073]
The intake door 620, the foot door 610, the face door 640, and the differential door 650 are moved to necessary positions by, for example, a servo motor (not shown) driving the link system. When the air conditioner 600 is in operation, signals from the inside / outside air switch and the outlet mode switch on the control panel provided in the passenger compartment are sent to the servo motor via the control CPU of the air conditioner 600. The position of the door is controlled. However, in the present embodiment, when the air conditioner is not in operation, the position of the door is determined by the control unit 610 regardless of the setting contents of the inside / outside air switch and the outlet mode switch on the control panel. It may be controlled to a state suitable for heat dissipation, such as 300.
[0074]
The blower fan 630 is a fan that is rotated by a DC motor (not shown), and blows air from the outside air inlet 621 and the inside air inlet 622 to a predetermined outlet when the air conditioner 600 is in operation. The normal blower fan 630 is always rotated in a certain direction, but in this embodiment, it has a function of rotating in reverse so as to blow air from the blowout port side to the outside air introduction port 621 side. The reverse rotation operation is executed based on a signal from control unit 510.
[0075]
Note that the heater core 660 for reheating a certain amount of cooling air during operation of the air conditioner 600 and the air mix door 665 for adjusting the amount of air reheated through the heater core 660 are described in the present invention. Detailed description is omitted because it is not directly related to the configuration. Moreover, the evaporator 100 is the same as the evaporator 100 demonstrated in either of the said 1st-3rd embodiment, and has the characteristic that the end of the heat pipe 200 is connected.
[0076]
The vehicle heat dissipating device of the present embodiment described above has the following effects. FIG. 12 is an example of a flowchart showing a control procedure by the vehicle heat dissipation device of the present embodiment.
[0077]
First, it is determined whether the engine is in a stopped state and the air conditioner 600 is in a stopped state (non-operating state) (S101, S102). In the present embodiment, a minimum amount of power is supplied to the control unit 510, the storage unit 520, the temperature sensor 530, and the like even when the engine is stopped.
[0078]
When it is determined that the engine is in a stopped state (S101: YES) and the air conditioner 600 is in a stopped state (S102: YES), the air conditioning mode set by the user is confirmed, and the confirmed air conditioning. The contents of the mode are stored in the storage unit 520 (S103). Here, the air conditioning mode includes the contents of the inside / outside air switching by the intake door 620 or the contents of the outlet setting by the foot door 610, the face door 640 and the differential door 650, and the contents of the air conditioning door setting (setting of the air mix door 665). May be included.
[0079]
Next, after the contents of the air conditioning mode are stored, the air conditioning mode is initialized (S104). For example, a default mode of an auto air conditioner that matches the outside air temperature may be set by initialization. In addition, the process (S103, S104) of storing the contents of the air conditioning mode before initializing the air conditioning mode in this way is for returning to the air conditioning mode set by the user.
[0080]
Next, it is determined whether or not the temperature measured by the temperature sensor 530 is equal to or higher than a predetermined value (S105). If it is determined that the measured temperature is equal to or higher than the predetermined value (S105: YES), the control unit 510 moves the foot door 610 to the closing position and controls the intake door 620 to move to the outside air inlet opening position. Perform (S106). In other words, the blowout from the foot position is closed as the blowout control of the air conditioner duct, and the outside air mode is set for the inside / outside air switching. Specifically, it is desirable to close only the foot door 610 and open the face door 640 and / or the differential door 650 that are close to the solar heating portion without closing. Note that electric power may be supplied to a servo motor (not shown) that moves each door only when it is determined that the measured temperature is equal to or higher than a predetermined value.
[0081]
Next, the control unit 510 performs control to rotate the blower fan 630 in the direction opposite to the rotation direction when the normal air conditioner device 600 is operated (S107). As a result, an air flow from the instrument panel outlet 641 side toward the outside air inlet 621 occurs.
[0082]
Subsequently, the control unit 610 determines whether or not the first predetermined time t1 has elapsed after starting to reversely rotate the blower fan 630 (S108). The determination in step S108 can be executed, for example, by starting the timer 511 when the blower fan 630 is rotated in the reverse direction and comparing the value of the timer 511 with the first predetermined time t1. If it is determined that the first predetermined time t1 has elapsed since the blower fan 630 started to reversely rotate (S108: YES), the reverse rotation of the blower fan 630 is stopped (S109). As a result, the blower fan 630 rotates reversely during the first predetermined time t1. For example, the first predetermined time t1 is preferably about 30 to 60 seconds. If the first predetermined time t1 is too long, a burden on a battery (not shown) may be increased. On the other hand, if the first predetermined time t1 is too short, the air cooling effect on the evaporator 100 or the like may be reduced.
[0083]
Next, it is determined whether or not the second predetermined time t2 has elapsed since the reverse rotation of the blower fan 630 has started (S110). The determination in step S110 can also be executed, for example, by restarting the timer 511 when the reverse rotation of the blower fan 630 starts to be stopped and comparing the value of this timer with the second predetermined time t2. When it is determined that the second predetermined time t2 has elapsed since the start of reverse rotation of the blower fan 630 (S110: YES), the process returns to step S104 and a series of processes is repeated. Therefore, as long as the measured temperature is equal to or higher than the predetermined value, the reverse rotation state of the blower fan 630 and the pause state of the blower fan 630 are repeated. That is, according to the above processing, control is performed to intermittently reversely rotate the blower fan 630.
[0084]
The second predetermined time t2 can be set as appropriate. Since power only needs to be supplied to the motor (not shown) for the blower fan 630 only in the reverse rotation state of the blower fan 630, power consumption is suppressed by increasing the second predetermined time t2. On the other hand, by shortening the second predetermined time t2, the ratio of the time to reversely rotate the blower fan 630 is increased, so that the heat dissipation effect is enhanced. Therefore, the length of the second predetermined time t2 can be appropriately designed according to the battery capacity and the like.
[0085]
On the other hand, in this embodiment, when the user drives the engine (S101: NO), a series of processes is immediately completed in any process. At this time, the data regarding the operating air-conditioning mode temporarily stored in the storage unit 520 is read, and the air-conditioning mode set by the user is restored. Therefore, it is possible to prevent the originally set air conditioning mode from being changed by the heat dissipation process shown in FIG.
[0086]
In the example illustrated in FIG. 12, the case where the blower fan 630 is rotated reversely intermittently has been described. However, unlike the present embodiment, the blower fan 630 can be rotated reversely constantly. For example, in consideration of a burden on the battery, it may be configured to set whether to reversely rotate reversely or constantly reversely rotate.
[0087]
Moreover, it can replace with the temperature sensor 530 and the solar radiation sensor which measures the surrounding solar radiation amount of the instrument panel 300 can also be used. Here, the “ambient solar radiation amount” includes the temperature inside the vehicle interior and / or the solar radiation amount around the outside of the vehicle. In this case, when the amount of solar radiation is a predetermined amount or more, the control for moving the foot door and the intake door is executed as described above, and the control for rotating the blower fan 630 in the reverse direction is executed. Become. The specific processing content is the same as the processing shown in FIG. 12, and detailed description thereof is omitted.
[0088]
According to the vehicle heat dissipating device of the present embodiment, in addition to the effects of the first to third embodiments, the following actions and effects are achieved.
[0089]
(F) When the air conditioner is not in operation, the indoor and / or outdoor temperature is measured. If the measured temperature is equal to or higher than the predetermined value, the foot door is moved to the closed position and the intake door is moved to the outside air inlet. According to the configuration for performing the control to move to the open position, a passage is formed from the outlet near the heat dissipating member to the outside air inlet, an air flow is generated, and heat is diffused from the vehicle interior air conditioning evaporator 100 to the outside. Is accelerated. Therefore, it becomes easy to maintain the thermal gradient between the vehicle interior air conditioning evaporator and heat pipe and the heat radiating member, and heat conduction from the heat radiating member to the vehicle interior air conditioning evaporator is effectively continued.
[0090]
(S) Further, since the foot door is moved to the closed position, air can be prevented from flowing back into the vehicle compartment as compared with the case where the foot door is left in the open position when the evaporator is used as a radiator.
[0091]
(C) Particularly, according to the configuration for performing the reverse rotation of the blower fan, the flow of air in the passage from the blowout port near the heat radiating member to the outside air introduction port is strengthened. As a result, the heat of the evaporator 100 is easily radiated from the outside air introduction port to the outside, the temperature on the evaporator side described above is lowered, and the heat conduction from the heat radiating member to the vehicle interior air conditioning evaporator is more effectively continued. . Therefore, heat dissipation of the heat radiating member is easily performed.
[0092]
(Fifth embodiment)
The vehicle heat dissipation device according to the present embodiment is almost the same as the heat dissipation device of the fourth embodiment, but omits the control of the blower fan 630 and controls the position of the intake door 620 and the position of the foot door 610. It is. Since other points are the same as in the case of the fourth embodiment, detailed description is omitted.
[0093]
FIG. 13 is an example of a flowchart showing a control procedure of the vehicle heat dissipation device of the present embodiment.
[0094]
First, it is determined whether the engine is stopped and the air conditioner 600 is stopped (S201, S202). Then, after the air conditioning mode set by the user is confirmed (S203), the air conditioning mode is once initialized (S204). Next, it is determined whether or not the temperature measured by the temperature sensor 530 is equal to or higher than a predetermined value (S205). The processing in these steps S201 to S205 is the same as that shown in FIG.
[0095]
Next, when it is determined that the measured temperature is equal to or higher than the predetermined value (S205: YES), the control unit 510 moves the foot door 610 to the closing position and moves the intake door 620 to the outside air inlet opening position. (S206). At this time, unlike the case of FIG. 12, the control of the blower fan 630 is not executed.
[0096]
Next, returning to step S205, it is sequentially determined whether or not the measured temperature is equal to or higher than the specified temperature. As a result, as long as the measured temperature is equal to or higher than the specified temperature (S205: YES), the foot door 610 is kept in the closed position, and the intake door 620 is kept in the outside air inlet opening position.
[0097]
On the other hand, in this embodiment, when the user drives the engine (S101: NO), a series of processes is immediately completed in any process. At this time, the data regarding the operating air-conditioning mode temporarily stored in the storage unit 520 is read, and the air-conditioning mode set by the user is restored.
[0098]
In addition, after the process of step S206 is complete | finished, you may return to the initialization process of step S204 similarly to the case where it shows by FIG. 11 instead of returning to the process of step S205.
[0099]
According to the vehicle heat dissipating device of the present embodiment, the effects of (4) and (6) of the fourth embodiment can be achieved. That is, a passage between the blow-out opening provided in the instrument panel 300 that is a heat-dissipating member and the outside air introduction opening is configured, and the evaporator 100 and the heat pipe 200 reaching the evaporator 100 are located in the middle of the passage. The movement of the air naturally occurs in the passage configured in this way, and the heat dissipation from the indoor air conditioning evaporator is accelerated. Therefore, it becomes easy to maintain the thermal gradient between the vehicle interior air conditioning evaporator and heat pipe and the heat radiating member, and heat conduction from the heat radiating member to the vehicle interior air conditioning evaporator is effectively continued.
[0100]
In addition, according to this 5th Embodiment, since the ventilation fan 630 is not driven, the burden on a battery is reduced. Therefore, when the battery capacity is high, the process of the fourth embodiment shown in FIG. 12 can be performed, and when the battery capacity is low, the process of the fifth embodiment shown in FIG. 13 can be performed.
[0101]
(Example)
An experiment was actually conducted using the vehicle heat dissipation device in the first embodiment shown in FIG. As the heat pipe 200, five heat pipes having a diameter of 5 mm were used. The heat pipe 200 was installed in the instrument panel 300 by the embedding method shown in FIG. Note that a 2 mm thick aluminum plate was used as the high thermal conductive material 340 in FIG. The connection method shown in FIG. 4 was used for connection between the heat pipe 200 and the evaporator 100.
[0102]
In such a state, the surface temperature of the instrument panel 300 was measured by leaving the vehicle under an outside air temperature of 35 ° C. and a sunny sunny day. As a result, the surface temperature of the instrument panel increased to about 90 ° C. in the case of a normal vehicle, whereas in the present embodiment, the surface temperature of the instrument pamel 300 remained at 65 ° C. From this example, it was confirmed that the vehicle heat dissipation device of the present invention has an excellent heat dissipation effect.
[0103]
As described above, the embodiments of the vehicle heat dissipation device of the present invention have been described. However, the present invention is not limited to these embodiments, and various modifications and omissions by those skilled in the art within the scope of the spirit of the invention. It is clear that additions are possible. For example, the present invention only needs to use an evaporator of an air conditioner (vehicle air conditioner) not only as a function as a normal evaporator but also as a radiator, and the method of connecting the heat pipe and the evaporator is as described above. Not limited to.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an outline of a vehicle heat dissipation device.
FIG. 2 is a cross-sectional view showing an example of a connection between an instrument panel and a heat pipe in the vehicle heat dissipation device of the first embodiment.
FIG. 3 is a cross-sectional view showing another example of the connection between the instrument panel and the heat pipe in the vehicle heat dissipation device of the first embodiment.
FIG. 4 is a diagram illustrating an example of a connection between a heat pipe and an evaporator in the vehicle heat dissipation device according to the first embodiment.
FIG. 5 is a diagram illustrating an example of a connection between a heat pipe and an evaporator in a vehicle heat dissipation device according to a second embodiment.
6 is a diagram showing an example of an arrangement relationship between a heat sink and a cooling pipe band shown in FIG.
FIG. 7 is a diagram showing another example of the arrangement relationship between the heat sink and the cooling pipe strip shown in FIG.
FIG. 8 is a diagram showing a modification of the second embodiment, and is a diagram showing an example of a heat pipe when an end portion of the heat pipe is brought into direct contact with a fin.
FIG. 9 is a diagram illustrating an example of connection between a heat pipe and an evaporator in a vehicle heat dissipation device according to a third embodiment.
FIG. 10 is a block diagram illustrating a configuration of a vehicle heat dissipation device according to a fourth embodiment.
11 is a cross-sectional view showing a schematic configuration of the vehicle air conditioner shown in FIG.
FIG. 12 is an example of a flowchart showing a control procedure by the vehicle heat dissipation device shown in FIG. 10;
FIG. 13 is an example of a flowchart showing a control procedure by the vehicle heat dissipation device of the fifth embodiment.
[Explanation of symbols]
100: Evaporator for air conditioning in vehicle interior,
101 ... Cooling tube,
103 ... Pipe for refrigerant,
200 ... heat pipe,
201 ... a heat pipe evaporator,
202 ... heat pipe condensing part,
300 ... Instrument panel,
310 ... epidermis,
320 ... cushioning material,
330 ... skeleton material,
340 ... high thermal conductivity material,
400 ... heat pipe connection base,
410 ... heat sink,
510... Control unit,
520 ... storage unit,
530 ... temperature sensor,
600 ... Vehicle air conditioner,
610 ... Foot door,
620 ... Intake door,
621 ... Outside air inlet,
622 ... Inside air introduction port,
630 ... Blower fan,
640 ... Face door,
650 ... Defdoor.

Claims (5)

A vehicle heat dissipating device for dissipating heat from a heat dissipating member in a vehicle compartment,
One or a plurality of heat pipes , one end of which is connected to an evaporator for air conditioning in the vehicle interior, are provided extending to the vicinity of the heat radiating member in the vehicle interior ,
The heat pipe is filled with a working fluid, the portion of the heat pipe on the side of the heat radiating member is a heat pipe evaporating part for evaporating the working fluid, and the portion of the heat pipe on the side of the vehicle interior air conditioning evaporator is A heat pipe condensing part for condensing the working fluid is formed, and the heat pipe condensing part is attached through a cooling pipe or a refrigerant pipe of the evaporator for air conditioning in the vehicle interior. apparatus. Furthermore, it has a back surface member made of a heat conductive material that covers the back surface of the heat radiating member surface layer,
The vehicle heat dissipation device according to claim 1, wherein the heat pipe evaporating unit is assembled to the back member . Furthermore, measuring means for measuring the ambient temperature of the heat radiating member ,
Determining means for determining whether or not the temperature measured by the measuring means when the vehicle air conditioner is not operating is equal to or higher than a predetermined value;
When the temperature is determined to be equal to or higher than the predetermined value by the determining means, the control unit moves the foot door of the vehicle interior air conditioner to the closed position, and introduces the outside air inlet and the inside air of the vehicle interior air conditioner. the vehicle radiator according to claim 1 or 2, characterized in Rukoto that Yusuke and control means for performing control to move the intake door to the outside air inlet open position, the selectively opening and closing the mouth. The control means performs control to reversely rotate the blower fan to the vehicle interior in the vehicle interior air conditioner in a steady or intermittent manner when the temperature is determined to be equal to or higher than a predetermined value by the determination device. The vehicle heat dissipating device according to claim 3 . Furthermore, measuring means for measuring the amount of solar radiation around the heat radiating member,
Determining means for determining whether or not the amount of solar radiation measured by the measuring means when the vehicle air conditioner is not operating is a predetermined value or more;
When the determining means determines that the amount of solar radiation is greater than or equal to the predetermined value, control is performed to move the foot door of the vehicle interior air conditioner to a closed position, and the outside air inlet and the internal air of the vehicle interior air conditioner are controlled. the vehicle radiator according to any one of claims 1 to 4, and a control means for performing control to move the intake door to the outside air inlet open position for selectively opening and closing the inlet port, the Rukoto which have a wherein .

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