JP2004138366A - Heat dissipation device for vehicles - Google Patents

Abstract

An object of the present invention is to provide a heat dissipating device for a vehicle that can dissipate heat of an interior material in a vehicle that is heated by sunlight or the like when the engine is stopped.
A heat radiator for a vehicle for radiating heat from an instrument panel in a vehicle compartment, the heat pipe having one end connected to an evaporator for air conditioning in a vehicle compartment, and an instrument panel in the vehicle compartment. It extends to the vicinity of 300 and is laid.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat radiating device for a vehicle for radiating heat of a heat radiating member in a vehicle compartment, and more particularly to a heat radiating device for a vehicle for radiating heat of a vehicle interior material heated by solar radiation.
[0002]
[Prior art]
As a conventional vehicle interior air conditioner, various devices are known.For example, a refrigerant heat exchange portion and an air heat exchange portion of an evaporator are separated, and both portions are separated by a heat pipe in which a working fluid is sealed. A connected vehicle air conditioner is known (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-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 merely obtains the effect of lowering the room temperature by simply sending cool air into the vehicle interior, similarly to a normal vehicle air conditioner. When the vehicle air conditioner is not in operation, such as during parking, the heat dissipation member such as the instrument panel does not dissipate heat, so the heat dissipation member may become 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-mentioned problems and achieving the object is a heat dissipating device for a vehicle for dissipating heat of a heat dissipating member in a vehicle compartment, the heat dissipating device having one end connected to an evaporator for vehicle interior air conditioning. A vehicle heat dissipating device characterized in that a transmission member is provided extending to a position near a heat dissipating member in a vehicle interior. In particular, the heat transfer means is one or more heat pipes in which a working fluid is sealed. The portion of the heat pipe on the side of the heat dissipation member constitutes a heat pipe evaporator for evaporating the working fluid, and the portion of the heat pipe on the side of the vehicle interior air conditioning evaporator constitutes a heat pipe condensing portion for condensing the working fluid.
[0006]
【The invention's effect】
According to the present invention, the heat transfer member, one end of which is connected to the evaporator for air conditioning inside the vehicle, is provided so as to extend to the vicinity of the heat dissipating member in the vehicle interior. 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 the hot sun.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a vehicle heat radiator according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the present invention radiates heat from a heat-dissipating member, such as an interior material, which is easily heated by solar radiation. In the following embodiments, an instrument panel will be described as an example of a heat radiation required member. However, the present invention is not limited to this case, and the present invention can also be used in a case where heat is radiated from various interior materials such as an upper part of an instrument panel, a center console, an A pillar, a ceiling interior material, and a handle.
[0008]
(1st Embodiment)
The vehicle heat radiating device according to the present embodiment has a structure in which a heat pipe having one end connected to the vehicle interior air-conditioning evaporator is extended and laid to the vicinity of a heat radiation member such as an instrument panel in the vehicle interior. is there. A working fluid is sealed inside the heat pipe, and the portion of the heat pipe on the side of the heat-dissipating member constitutes a heat pipe evaporator for evaporating the working fluid, and a portion of the heat pipe on the side of the evaporator for vehicle interior air conditioning. Constitutes a heat pipe condensing section for condensing the working fluid. Hereinafter, the present embodiment will be described with reference to the drawings.
[0009]
FIG. 1 is a diagram schematically illustrating a heat dissipation device for a vehicle according to the present embodiment. The vehicle heat radiator has a plurality of heat pipes (heat transfer members) 200a to 200f (hereinafter, collectively referred to as heat pipes 200) each having one end 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 radiation member required in the vehicle interior. Note that 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 cool air into the vehicle interior and adjusting the temperature of the interior of the vehicle, but also includes a non-equipment of the air conditioner. During operation, it also functions as a radiator for radiating heat conducted from the instrument panel 300 in the vehicle cabin via the heat pipe 200 in the vehicle cabin. That is, the evaporator 100 has a role as a radiator in addition to a role as the normal evaporator 100. The evaporator 100 is installed below the back side of the instrument panel 300 like 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, and 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. Instrument panel 300 and evaporator 100 are relatively short in distance. The heat pipe 200, one end of which is connected to the evaporator 100, preferably extends to the rear surface of the instrument panel 300 at a substantially shortest distance. The connection between the heat pipe 200 and the evaporator 100 may be in various connection forms, the details of which 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 spread over the entire back surface of instrument panel 300, and evenly distribute heat in the entire area of instrument panel 300. It is configured to be able to radiate heat.
[0014]
In a portion of the heat pipe 200 extending to the vicinity of the back surface side of the instrument panel 300, the working fluid is evaporated by the instrument panel 300 heated by solar radiation or the like. As described above, the portion of the heat pipe 200 extending to the vicinity of the back surface side of the instrument panel 300 forms a heat pipe evaporator 201 for evaporating the working fluid. On the other hand, at the portion of the heat pipe 200 connected to the evaporator 100, the working fluid condenses. This is because the evaporator 100 can maintain a relatively low temperature because a large number of fins and the like are arranged and the surface area is large and heat is easily exchanged with the outside. Thus, the portion of the heat pipe 200 connected to the evaporator 100 forms a heat pipe condensing section 202 for condensing the working fluid.
[0015]
Next, the relationship between instrument panel 300 and heat pipe 200 in the present embodiment will be described. Various methods can be considered for connecting the instrument panel 300 and the heat pipe 200. Here, the two methods shown in FIGS. 2 and 3 will be described as examples.
[0016]
FIG. 2 is a diagram showing 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 a skin 310, a cushioning material 320, and a skeleton material 330 are arranged in this 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 an ABS resin (acrylonitrile-butadiene-styrene copolymer). The cushioning member 320 is made of polyurethane or the like, and has a high elasticity. The skeletal material 330 is made of, for example, a reinforced resin obtained by mixing glass fibers with polypropylene. However, the skin 310, the cushioning material 320, and the skeleton material 330 may be made of other materials. For example, skin 310 may be leather, fabric, or the like. The skin 310 or the lamination of the skin 310 and the cushioning 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 cushioning material 320. Preferably, the plurality of heat pipes 200a to 200e are arranged in parallel with each other. For example, by arranging a plurality of heat pipes 200a to 200e at a predetermined interval and filling and solidifying a polyurethane resin which is a raw material of the cushioning material 320 in that state, as shown in FIG. A structure in which the heat pipes 200a to 200e are buried can be realized.
[0019]
FIG. 3 is a diagram showing another example of the connection between the instrument panel 300 and the heat pipe 200.
[0020]
In the example of FIG. 3, there is further provided 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 cushioning material 320. For example, in the case of FIG. 3, the instrument panel 300 has a laminated structure in which a skin 310, a cushioning 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 heat pipes 200a to 200e are assembled to the high thermal conductive material 340. For example, heat pipes 200a to 200e are welded to high heat conductive material 340. The high thermal conductive material 340 is configured to enable uniform heat collection from the entire interior material such as the instrument panel 300, and prevents partial heat radiation into the vehicle interior due to uneven temperature. .
[0021]
Next, the connection relationship between the heat pipe 200 and the evaporator 100 will be described.
[0022]
FIG. 4 is a diagram illustrating an example of the connection between the heat pipe 200 and the evaporator 100 according to 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 normal evaporator 100, and thus detailed description is omitted. However, briefly described, the evaporator 100 includes a plurality of cooling pipe bands 101, And fins 102 provided between adjacent cooling pipe bands 101. Although the cooling pipe band 101 is shown as a single plate in the drawing, it is actually formed by superposing two metal plates, each of which has a concave portion on one surface, as a set and joining them in a gas-tight and liquid-tight manner. It is a plate-like tube made and has a flat flow path for flowing the 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 band 101. As a result, the heat pipe 200 and the cooling pipe band 101 come into thermal contact. Since the heat pipe 200 and the cooling pipe band 101 are independent of each other and are isolated while maintaining their airtightness, the working fluid in the heat pipe 200 and the refrigerant in the cooling pipe band 101 are separated from each other. Are not mixed.
[0025]
The vehicle heat radiator of the present embodiment described above has the following operations. When the vehicle is left under the hot sun and the instrument panel 300 is heated by the solar radiation, the heat of the instrument panel 300 is transmitted to the heat pipe 200 through the skin 310 and the cushioning material 320. In particular, by adopting a structure in which the back side (back side of the surface layer) of the skin 310 or the cushioning material 320 of the instrument panel 300 is covered with the high thermal conductive material 340 (back surface member), and the high thermal conductive material 340 is assembled to the heat pipe 200. The heat of the entire area of the instrument panel 300 is transmitted to the heat pipe 200.
[0026]
In the heat pipe 200, the working fluid rises toward the instrument panel 300 due to capillary action or the like. The working fluid evaporates in the portion of the heat pipe 200 on the instrument panel 300 side, that is, in the heat pipe evaporating section 201. Then, when the working fluid in the heat pipe 200 evaporates, the heat of the instrument panel 300 is absorbed.
[0027]
On the other hand, since the evaporator 100 is not directly exposed to sunlight and has a large surface area with many fins 102 attached thereto, the temperature is kept relatively low even when the air conditioner is not operating. Therefore, when the vaporized working fluid moves to the portion of the heat pipe 200 on the evaporator 100 side, it condenses and returns to a liquid. That is, the portion of the heat pipe 200 on the evaporator 100 side functions as a heat pipe condensing unit that condenses the working fluid. The heat generated when the working fluid is condensed is released outside using the evaporator 100 as a radiator when the air conditioner is not operating.
[0028]
By the above operation, the heat of the instrument panel 300 heated by the solar radiation is sequentially radiated to the evaporator 100 via the heat pipe 200.
[0029]
On the other hand, the above configuration has a useful effect even when the air conditioner is operating.
[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 works as a cooler and has a low temperature.
[0031]
Then, 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 provided so as to extend 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 cooled via the cooled heat pipe 200. Cooled directly. Further, when the interior material is cooled, radiant cooling occurs, so that the temperature in the vehicle compartment can be reduced.
[0032]
As described above, the above-described heat radiating device for a vehicle can exert an effect of directly cooling the interior materials such as the instrument panel 300 and the 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) The heat transfer member having one end connected to the vehicle interior air-conditioning evaporator 100 is extended so as to extend to the vicinity of the heat dissipation member in the vehicle interior, so that the engine is stopped as in a parking state under hot weather. In this case, since the heat is dissipated to the vehicle interior air-conditioning evaporator through the heat transfer member, it is possible to prevent a phenomenon in which the heat-dissipating member such as the interior member becomes hot even in a parking state under hot weather, etc. .
[0035]
(A) Since the heat transfer member having one end connected to the vehicle interior air-conditioning evaporator 100 is extended and laid to the vicinity of the heat dissipation member in the vehicle interior, the vehicle interior air-conditioning evaporator when the vehicle interior air-conditioning device is not operating. Can also be used as a radiator. That is, the heat of the heat dissipation member is transmitted to the vehicle interior air-conditioning evaporator through the heat transmission member and is radiated. Therefore, the burden on the air conditioner can be reduced and the fuel efficiency can be prevented from deteriorating, as compared with the case where the heat radiation member is cooled by the cool air from the air conditioner.
[0036]
(C) By connecting the heat transfer member to the evaporator, heat radiation can be performed when the vehicle interior air conditioner is not operating, and direct cooling of the heat radiation required member can be performed when the vehicle interior air conditioner is operating. That is, during operation of the vehicle interior air conditioner, in addition to cooling by cold air, interior materials such as the instrument panel 300 and seats can be directly cooled, and radiant cooling via the heat conduction member allows the vehicle interior to be cooled. The temperature can be lowered.
[0037]
(D) Instead of providing a dedicated heat sink separate from the vehicle interior air conditioning evaporator 100, the vehicle interior air conditioner evaporator can also be used as a radiator. Size reduction and cost reduction can be realized. In addition, the evaporator for vehicle interior air conditioning is provided with a large number of fins and the like and has a large surface area, so that heat can be efficiently radiated to the outside.
[0038]
(E) The heat radiation effect is higher than when a vehicle body outer panel that is easily heated by solar radiation is used as a radiator. In particular, the evaporator 100 for air conditioning inside the vehicle has a heat radiation area several times larger than the outer panel of the vehicle body due to the effect of the fins and the like, so that the heat radiation effect is high. Further, since the cabin air-conditioning evaporator 100 is often installed at a position relatively close to the instrument panel 300 or the like, the heat energy absorbed by the instrument panel 300 is discharged to the outside of the vehicle cabin in 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 sealed is used as the heat transfer means, effective heat transfer can be achieved by evaporation of the working fluid on the heat dissipation member side and condensation of the working fluid on the evaporator side. Further, since no power source or driving force is required for heat transfer using the heat pipe, there is no burden on a battery or the like. In addition, since the working fluid is sealed in the heat pipe, the handling is easy, and there is no possibility that the working fluid and the refrigerant in the evaporator for air conditioning in the vehicle compartment are mixed.
[0040]
(G) Since the back surface member made of a high thermal conductive material covers the entire back surface of the heat radiation required member surface, and the heat pipe is attached to this rear surface member, heat in the entire heat radiation required member can be radiated.
[0041]
(H) Since the evaporator side (heat pipe condensing part) of the heat pipe is attached so as to penetrate the cooling pipe band of the evaporator for vehicle interior air conditioning, the portion where the heat pipe penetrates during the manufacture of the evaporator for vehicle interior air conditioning. The configuration of a normal vehicle interior air conditioning evaporator can be diverted, except that the evaporator is molded.
[0042]
(Second embodiment)
The heat dissipating device for a vehicle according to the present embodiment is almost the same as the heat dissipating device for a vehicle according to the first embodiment, except that a heat dissipating plate provided along a plurality of cooling pipe bands of the evaporator for cabin air conditioning. And a heat pipe connecting base to which these heat radiating plates are connected, wherein the heat pipe condensing section is attached to the heat pipe connecting base. Hereinafter, the present embodiment will be described with reference to the drawings, but description of parts common to the first embodiment will be omitted.
[0043]
FIG. 5 is a diagram illustrating a structure of the vehicle heat radiator 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 heat dissipation device for a vehicle according to the present embodiment is the same as that of the first embodiment.
[0044]
In the vicinity of the evaporator 100, a heat pipe connection base 400 for collecting heat pipe condensing sections of the plurality of heat pipes 200 is provided. One end of each of the plurality of heat pipes 200a to 200d 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, and iron, and is preferably made of the same material as the heat pipes 200a to 200d from the viewpoint of heat conduction and joining. The heat pipes 200a to 200d and the heat pipe connection base 400 are connected by, for example, welding.
[0045]
FIG. 6 is an example of an enlarged view of the evaporator 100, and FIG. 7 is another example of an enlarged view of the evaporator 100. A plurality of heat sinks 410 are attached to the heat pipe connection base 400. The heat radiating plate 410 extending from the heat pipe connection base 400 has substantially the same shape as the cooling pipe band 101, and extends along each cooling pipe band of the evaporator 100 as shown in FIG. 6 or 7. They are 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 sink 410, the cooling tube band 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 band 101 via the fin 102. That is, in the evaporator 100, the cooling pipe band 101, the fins 102, the heat sink 410, the fins 102, and the cooling pipe band 101 are arranged in this order. In other words, the cooling tube band 101 and the heat sink 410 are overlapped with the fins 102 provided therebetween.
[0047]
FIG. 7 is a diagram showing another example of the arrangement relationship of the heat sink 410, the cooling tube band 101, and the fins 102. As shown in FIG. According to the configuration shown in FIG. 7, the heat radiating plate 410 and the cooling tube band 101 are directly laminated to form a laminate, and a plurality of adjacent laminates are connected via the fins 102. The difference from the case of FIG. 6 is that the cooling tube band 101 and the heat sink 410 are directly overlapped.
[0048]
In the examples shown in FIGS. 6 and 7, the cooling pipe band 101 and the heat radiating plate 410 are alternately arranged, and the cooling pipe band 101 and the heat radiating plate 410 have the same number. The arrangement of 410 is not limited to this case. That is, instead of arranging the heat radiating plate 410 for each cooling pipe band 101, the heat radiating plate 410 may be arranged in a plurality of cooling pipe bands 101 at a ratio of one heat radiating plate 410.
[0049]
According to the present embodiment, the heat of heat pipe 200 is transmitted to radiator plate 410, and the heat is further radiated from radiator plate 410 to fins 102 and cooling tube band 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 heat pipe 200 and is radiated to the outside via the evaporator 100. You.
[0050]
When a large number of heat pipes 200 are present, it is desirable to provide the heat pipe connection base 400 for consolidating 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 employed.
[0051]
FIG. 8 shows a schematic configuration of an end of the heat pipe on the evaporator 100 side, that is, a heat pipe condensing unit 202 when directly connected to the evaporator 100. The heat pipe condensing section 202 is formed in a plate shape having the same shape as that of the cooling tube band, and this plate shape portion is used as the heat radiating plate 410. In this case, the plate-shaped end, the cooling tube band 101 and the fin 102 are overlapped in the same manner as in the case shown in FIG. 6 or FIG.
[0052]
According to the present embodiment, the following effects are obtained in addition to the effects (A) to (G) of the first embodiment.
[0053]
(F) 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]
(G) According to a configuration in which a radiator plate having substantially the same shape as the cooling tube band is extended from the heat pipe connection base and the radiation plate is superimposed on the cooling tube band and the fin, the fin is directly connected to the fin. The heat pipe side can be brought into thermal contact, and the heat radiation effect is large. Since heat diffusion proceeds throughout the evaporator for vehicle interior air conditioning and radiates heat to the outside, the efficiency of heat radiation from the evaporator for vehicle interior air conditioning to the outside increases.
[0055]
(Third embodiment)
The heat dissipating device for a vehicle according to the present embodiment is almost the same as the heat dissipating device for a vehicle according to the first embodiment, except that the refrigerant pipe of the evaporator for vehicle interior air conditioning includes an evaporator side portion of the heat pipe, A pipe condensing part is attached. Hereinafter, the present embodiment will be described with reference to the drawings, but description of parts common to the first embodiment will be omitted.
[0056]
FIG. 9 is a diagram illustrating a structure of heat dissipation for a vehicle according to the present embodiment, and is a diagram illustrating an example of a connection between a heat pipe 200 and an evaporator. The structure on the instrument panel 300 side of the heat dissipation device for a vehicle 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, similarly to a normal evaporator. The refrigerant pipe 103 is a pipe for sending refrigerant into the refrigerant pipe band 101 and extracting refrigerant that has passed through the refrigerant pipe band 101. The refrigerant pipe 103 is also called a refrigerant condenser pipe, a refrigerant tank, or a refrigerant outlet pipe.
[0058]
A heat pipe 200 is provided along the axial direction of the refrigerant pipe 103. For example, a refrigerant pipe 103 penetrates 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 heat pipe 200 is radiated to refrigerant pipe 103 which forms a part of 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 to the heat pipe 200 and is radiated to the outside via the evaporator 100.
[0060]
Although FIG. 9 illustrates the case where the heat pipe 200 penetrates through the refrigerant pipe 103, the vehicle heat radiator of the present embodiment is not limited 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 to each other and may extend in parallel with each other.
[0061]
According to the present embodiment, the following effects are obtained in addition to the effects (A) to (G) of the first embodiment.
[0062]
According to the configuration in which the heat pipe condenser is attached to the refrigerant pipe of the vehicle interior air-conditioning evaporator, the refrigerant near the outlet, which is relatively low in temperature, and the heat pipe condenser are heated in the vehicle interior air-conditioner evaporator. Since it can be replaced, the heat radiation effect is high.
[0063]
(Fourth embodiment)
The heat dissipating device for a vehicle according to the present embodiment includes, in addition to the mechanical configuration of the first, second, or third embodiment, each part of an air conditioner, specifically, a foot door and an intake door, which will be described later. , And control means for controlling the blower fan and the like. The configurations of the evaporator 100, the heat pipe 200, and the instrument panel 300 are the same as those in any of the above-described first to third embodiments, and a detailed description thereof will be omitted.
[0064]
FIG. 10 is a block diagram showing the configuration of the vehicle heat radiator of the present embodiment. FIG. 10 does not show the mechanical configuration of the heat pipe 200 and the like.
[0065]
The vehicle heat radiating device according to the present embodiment includes a control unit 510, a storage unit 520, and a temperature sensor 530, and controls a foot door 610, an intake door 620, and a blower fan 630 of an air conditioner 600 attached to a vehicle to predetermined positions. 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 degree (position) of intake door 620, the opening degree of foot door 610, and blower fan 630, as described later. The control unit 510 may further control the opening degree of a face door and a differential door described later. Further, control unit 510 includes a timer 511. Note that control unit 510 may also be used as a normal CPU (not shown) of air conditioner 600.
[0067]
The storage unit 520 is a memory for storing various data and information, and a partial area of a memory (not shown) for the air conditioner 600 may be used as the storage unit 520.
[0068]
Temperature sensor 530 is a measuring unit that measures the temperature around instrument panel 300. Here, the “ambient temperature” includes the temperature inside the vehicle compartment and / or the temperature around the outside of the vehicle. Further, the surface temperature of the instrument panel 300 itself can 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 device 600 can be used also 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 this embodiment may be separately provided.
[0070]
FIG. 11 is a diagram showing a schematic configuration of the air conditioner 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 inlet 621 and the inside air inlet 622. In a mode in which the outside air inlet 621 is opened (outside air mode), the opening of the inside air inlet 622 is closed by the intake door 620. On the other hand, in a mode in which the inside air introduction port 622 is opened (inside air mode), the opening of the outside air introduction port 621 is closed 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 the outlets. The foot door 610 is a door for opening and closing an outlet (lower 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 on 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 a windshield (not shown) side.
[0073]
The intake door 620, the foot door 610, the face door 640, and the differential door 650 are, for example, moved to necessary positions by driving a link system by a servo motor (not shown). When the air conditioner 600 is in operation, a signal from an inside / outside air switch or an air outlet mode switch on a control panel provided in the vehicle compartment is sent to a servomotor via a CPU for controlling the air conditioner 600. The position of the door is controlled. However, in the present embodiment, when the air conditioner is not operating, 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 radiation, such as 300.
[0074]
The blower fan 630 is a fan rotated by a DC motor (not shown), and blows the air from the outside air inlet 621 or the inside air inlet 622 to a predetermined outlet when the air conditioner 600 is operating. The normal blower fan 630 is always rotated in a fixed direction, but in the present embodiment, has a function of reverse rotation so as to blow air from the outlet side to the outside air inlet 621 side. The reverse rotation operation is performed based on a signal from control unit 510.
[0075]
The heater core 660 for reheating a certain amount of cooling air during the operation of the air conditioner 600 and the air mix door 665 for adjusting the amount of air to be reheated through the heater core 660 according to the present invention. Detailed description is omitted because it is not directly related to the configuration. The evaporator 100 is the same as the evaporator 100 described in any of the first to third embodiments, and has a feature that one end of the heat pipe 200 is connected.
[0076]
The above-described vehicle heat radiator of the present embodiment has the following operations. FIG. 12 is an example of a flowchart showing a control procedure by the vehicle heat radiator of the present embodiment.
[0077]
First, it is determined whether the engine is in a stopped state and the air conditioner device 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]
If it is determined that the engine is stopped (S101: YES) and the air conditioner 600 is stopped (S102: YES), the air conditioning mode set by the user is confirmed, and the confirmed air conditioning is checked. The contents of the mode are stored in the storage unit 520 (S103). Here, the air-conditioning mode includes the contents of switching between the inside and outside air 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 cooling / heating setting (setting of the air mixing door 665). May be included.
[0079]
Next, after storing the contents of the air conditioning mode, the air conditioning mode is initialized (S104). For example, the default mode of the auto air conditioner according to the outside temperature may be set by initialization. The process of storing the contents of the air-conditioning mode before the initialization of the air-conditioning mode (S103, S104) is to enable the user to return 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), control unit 510 performs control to move foot door 610 to the closing position and to move intake door 620 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 inside / outside air is switched to the outside air mode. Specifically, it is desirable that only the foot door 610 be closed, and the face door 640 and / or the differential door 650 located at a position close to the solar heating portion be opened without being closed. Note that 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, control unit 510 performs control to rotate blower fan 630 in a direction opposite to the rotation direction during normal operation of air conditioner 600 (S107). As a result, air flows from the instrument panel outlet 641 toward the outside air inlet 621.
[0082]
Subsequently, the control unit 610 determines whether the first predetermined time t1 has elapsed since the start of the reverse rotation of the blower fan 630 (S108). The determination in step S108 can be executed, for example, by starting the timer 511 at the time 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. When it is determined that the first predetermined time t1 has elapsed since the start of the reverse rotation of the blower fan 630 (S108: YES), the reverse rotation of the blower fan 630 is stopped (S109). As a result, the blower fan 630 rotates in the reverse direction during the first predetermined time t1. For example, the first predetermined time t1 is preferably about 30 seconds to 60 seconds. If the first predetermined time t1 is too long, a load 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 and the like may be reduced.
[0083]
Next, it is determined whether or not the second predetermined time t2 has elapsed since the start of the reverse rotation of the blower fan 630 (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 stop, and comparing the value of the timer with the second predetermined time t2. If it is determined that the second predetermined time t2 has elapsed since the start of the 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 halt state of the blower fan 630 are repeated. That is, according to the above processing, control for intermittently rotating the blower fan 630 is performed.
[0084]
Note that the second predetermined time t2 can be set as appropriate. It is sufficient to supply power to a motor (not shown) for the blower fan 630 only in the reverse rotation state of the blower fan 630, so that 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 during which the blower fan 630 is rotated in the reverse direction is increased, and the heat radiation 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 the present 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 operation returns to the air-conditioning mode set by the user. Therefore, the heat release process shown in FIG. 12 prevents the originally set air conditioning mode from being changed.
[0086]
In the example illustrated in FIG. 12, the case where the blower fan 630 is intermittently reversely rotated has been described. However, unlike the present embodiment, the blower fan 630 may be constantly reversely rotated. For example, in consideration of the load on the battery, it may be configured to set whether to intermittently reverse rotation or to constantly reverse rotation.
[0087]
Instead of the temperature sensor 530, a solar radiation sensor that measures the amount of solar radiation around the instrument panel 300 can be used. Here, the “peripheral solar radiation” includes the temperature of the vehicle interior and / or the amount of solar radiation outside the vehicle. In this case, when the amount of solar radiation is equal to or more than the predetermined amount, the control to move the foot door and the intake door as described above and the control to reversely rotate the blower fan 630 are performed. Become. The specific processing content is the same as the processing shown in FIG. 12, and a detailed description will be omitted.
[0088]
According to the heat dissipation device for a vehicle of the present embodiment, the following operations and effects are exerted in addition to the effects of the first to third embodiments.
[0089]
(B) When the air conditioner is not operating, the indoor and / or outdoor temperature is measured. If the measured temperature is equal to or higher than a 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 of moving to the open position, a passage from the outlet near the heat radiation required member to the outside air inlet is formed, and the flow of air is generated, and heat is radiated from the vehicle interior air conditioning evaporator 100 to the outside. Is accelerated. Therefore, the heat gradient between the evaporator for the vehicle interior air conditioning and the heat pipe and the heat radiation required member is easily maintained, and the heat conduction from the heat radiation required member to the evaporator for the vehicle interior air conditioning is effectively continued.
[0090]
(S) In addition, since the foot door is moved to the closed position, it is possible to prevent the air from flowing back into the vehicle compartment as compared with the case where the foot door is kept at the open position when the evaporator is used as a radiator.
[0091]
(C) In particular, according to the configuration in which the control for rotating the blower fan in the reverse direction is performed, the flow of air in the passage from the outlet near the heat radiation required member to the outside air inlet is increased. As a result, the heat of the evaporator 100 is easily radiated from the outside air inlet to the outside, the temperature on the evaporator side is reduced, and the heat conduction from the heat radiation required member to the evaporator for vehicle interior air conditioning is continued more effectively. . Therefore, heat dissipation of the heat dissipation member is easily performed.
[0092]
(Fifth embodiment)
The heat dissipating device for a vehicle according to the present embodiment is almost the same as the heat dissipating device of the fourth embodiment, except that the control of the blower fan 630 is omitted, and the position of the intake door 620 and the position of the foot door 610 are controlled. It is. Note that the other points are the same as those in the fourth embodiment, and a detailed description thereof will be omitted.
[0093]
FIG. 13 is an example of a flowchart illustrating a control procedure of the vehicle heat radiator of the present embodiment.
[0094]
First, it is determined whether the engine is stopped and the air conditioner device 600 is stopped (S201, S202). After the air-conditioning mode set by the user is confirmed (S203), the air-conditioning mode is temporarily initialized (S204). Next, it is determined whether the temperature measured by the temperature sensor 530 is equal to or higher than a predetermined value (S205). The processing of steps S201 to S205 is the same as the case shown in FIG.
[0095]
Next, when it is determined that the measured temperature is equal to or higher than the predetermined value (S205: YES), control unit 510 moves foot door 610 to the closing position and moves intake door 620 to the outside air inlet opening position. Is performed (S206). At this time, unlike the case of FIG. 12, the control of the blower fan 630 is not performed.
[0096]
Next, returning to step S205, it is sequentially determined whether or not the measured temperature is equal to or higher than a 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 keeps moving to the closed position, and the intake door 620 keeps moving to the outside air inlet opening position.
[0097]
On the other hand, in the present 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 operation returns to the air-conditioning mode set by the user.
[0098]
After the process of step S206 is completed, instead of returning to the process of step S205, the process may return to the initialization process of step S204, as in the case shown in FIG.
[0099]
According to the heat dissipation device for a vehicle of the present embodiment, the effects (i) and (ii) of the fourth embodiment can be obtained. That is, a passage is formed between the blowout port provided on the instrument panel 300 which is a heat dissipation member and the outside air introduction port, and the evaporator 100 and the heat pipe 200 reaching the evaporator 100 are located in the middle of this passage. The movement of air naturally occurs in the passage thus configured, and the dissipation of heat from the indoor air conditioning evaporator to the outside is accelerated. Therefore, the heat gradient between the evaporator for the vehicle interior air conditioning and the heat pipe and the heat radiation required member is easily maintained, and the heat conduction from the heat radiation required member to the evaporator for the vehicle interior air conditioning is effectively continued.
[0100]
According to the fifth embodiment, since the blower fan 630 is not driven, the load on the battery is reduced. Therefore, when the battery capacity is high, the processing of the fourth embodiment shown in FIG. 12 can be performed, and when the battery capacity is low, the processing of the fifth embodiment shown in FIG. 13 can be performed.
[0101]
(Example)
An experiment was actually performed using the heat dissipation device for a vehicle according to 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 between the heat pipe 200 and the evaporator 100 used the connection method shown in FIG.
[0102]
In such a state, the vehicle was left under the sunny weather with an outside air temperature of 35 ° C., and the surface temperature of the instrument panel 300 was measured. As a result, the surface temperature of the instrument panel rose to about 90 ° C. in the case of a normal vehicle, whereas the surface temperature of the instrument pamel 300 stayed at 65 ° C. in the case of this embodiment. From this example, it was confirmed that the vehicle heat radiator of the present invention had an excellent heat radiating effect.
[0103]
As described above, the embodiments of the vehicle heat radiator of the present invention have been described. However, the present invention is not limited to these embodiments, and various modifications and omissions can be made by those skilled in the art within the scope of the invention. Obviously, additions are possible. For example, the present invention only needs to use the evaporator of an air conditioner (vehicle air conditioner) not only as a normal evaporator but also as a radiator. 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 view showing an outline of a heat dissipation device for a vehicle.
FIG. 2 is a cross-sectional view showing an example of a connection between an instrument panel and a heat pipe in the heat dissipation device for a vehicle according to 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 heat dissipation device for a vehicle 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.
FIG. 6 is a diagram showing an example of an arrangement relationship between a heat sink and a cooling tube band shown in FIG. 5;
FIG. 7 is a view showing another example of the arrangement relationship between the heat sink and the cooling tube band shown in FIG. 5;
FIG. 8 is a view showing a modification of the second embodiment, and is a view showing an example of a heat pipe in a case where an end of the heat pipe is directly brought into contact with a fin.
FIG. 9 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 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 radiator shown in FIG. 10;
FIG. 13 is an example of a flowchart showing a control procedure by the vehicle heat radiator of the fifth embodiment.
[Explanation of symbols]
100 ... evaporator for vehicle interior air conditioning,
101 ... cooling pipe band,
103 ... refrigerant pipe,
200 ... heat pipe,
201: heat pipe evaporator
202: heat pipe condenser
300 ... Instrument panel,
310 ... epidermis,
320: cushioning material,
330 ... frame material,
340 ... high heat conductive 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: shy air inlet,
630: blower fan,
640 ... face door,
650: Differential door.

Claims (11)

A heat dissipating device for a vehicle for dissipating heat of a heat dissipating member in a vehicle interior,
A heat dissipating device for a vehicle, wherein a heat transfer member having one end connected to an evaporator for air conditioning in a vehicle interior is provided extending to a vicinity of the heat dissipating member in the vehicle interior. The heat transfer means is one or a plurality of heat pipes in which a working fluid is sealed, and a portion of the heat pipe on the side of the heat dissipation member constitutes a heat pipe evaporator for evaporating the working fluid, and the heat pipe The heat radiating device for a vehicle according to claim 1, wherein the portion on the side of the evaporator for air conditioning of the vehicle interior forms a heat pipe condensing portion for condensing the working fluid. Further, a back surface member made of a heat conductive material covering the back surface of the heat dissipation member surface layer,
The vehicle heat radiator according to claim 2, wherein the heat pipe evaporator is assembled to the back surface member. The heat radiating device for a vehicle according to claim 2, wherein the heat pipe condensing portion is attached so as to penetrate a cooling pipe band of the evaporator for air conditioning in the vehicle interior. The said heat pipe condensing part is tabular, and the said heat pipe condensing part in the said plate shape was contacting the fin of the evaporator for vehicle interior air conditioning, The Claim 2 or 3 characterized by the above-mentioned. A heat radiating device for a vehicle according to claim 1. Furthermore, it has a heat sink provided along a plurality of cooling pipe bands of the evaporator for air conditioning in the vehicle, and a heat pipe connection base to which the heat sink is connected,
The heat radiating device for a vehicle according to claim 2, wherein the heat pipe condensing section is attached to the heat pipe connecting base. The heat radiating device for a vehicle according to claim 6, wherein the cooling pipe band and the heat radiating plate are overlapped with each other with fins provided therebetween. The heat radiating device for a vehicle according to claim 2, wherein the heat pipe condensing section is attached to a refrigerant pipe provided in the vehicle interior air-conditioning evaporator. Further, a measuring means for measuring the peripheral temperature of the heat radiation required 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 determination unit determines that the temperature is equal to or higher than the predetermined value, the control unit moves a foot door of the vehicle interior air conditioner to a closed position, and controls an outside air introduction port and an inside air introduction of the vehicle interior air conditioner. The vehicle heat radiating device according to any one of claims 1 to 8, further comprising control means for performing control to move an intake door for selectively opening and closing the opening to an open position for opening the outside air inlet. The control means controls the air-conditioning device to rotate the air-blowing fan to the inside of the cabin in the cabin air-conditioning system in a steady or intermittent manner when the judging means judges that the temperature is equal to or higher than a predetermined value. The heat dissipation device for a vehicle according to claim 9, wherein: Further, measuring means for measuring the amount of solar radiation around the heat dissipation 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 equal to or greater than a predetermined value;
When the amount of solar radiation is determined to be equal to or greater than the predetermined value by the determination means, control is performed to move a foot door of the vehicle interior air conditioner to a closed position, and the outside air inlet and the indoor air of the vehicle interior air conditioner are controlled. The heat radiating device for a vehicle according to any one of claims 1 to 8, further comprising control means for performing control for moving an intake door for selectively opening and closing the inlet to an open position of the outside air inlet.

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