JPH0285010A - Cooling device - Google Patents

Abstract

PURPOSE:To have effective supply of cool wind by installing a piezo element with its cold side faced up the heat radiation side down, and introducing the condense water produced on the cold side to the heat radiation side. CONSTITUTION:In a cooling/warming device suitable as a rear cooler for a car, a piezo element C is installed in a cold side duct 4, and understream this piezo element C, a cool wind duct 41 is installed on the cold side 2 situated above while a warm wind duct 42 on the heat radiation side 3 situated below. Upstream the piezo element C, on the other hand, an air quantity distributing damper 45 is furnished as a blow changeover device. The cold side duct 4 and warm side duct 83 leading to a heater H for a warming device are connected opened to a duct 80 understream a fan 82, and a damper 81 for changeover of the air from inside the car to outside and vice versa is equipped upstream fan 82. Further a damper 46 for changeover of wind path is furnished at the opening of warm side space filter 83 while another damper 85 for changing-over installed in the front part of the heater H.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cooling device that can efficiently operate a thermoelectric element to supply cold air to a vehicle interior or the like.

[Prior art]

2. Description of the Related Art Conventionally, as a vehicle-mounted air conditioning system using a thermoelectric element, one shown in FIG. 13 is known. The device consists of a heating device 8 and a cooling device 9.

The former heating device 8 includes a heater H disposed within a duct 84, and sends air from a fan 82 provided within the duct 80 to the heater H to introduce warm air into the vehicle interior.

Alternatively, the damper 85 sends air to the duct 83 and the air inside or outside the vehicle is directly introduced into the vehicle. Air inside or outside the vehicle is sucked in by operating the damper 81.

On the other hand, the latter cooling device 9 has a thermoelectric element C disposed in the duct 4, and downstream of the thermoelectric element C, a cold air duct 41 is installed to send cold air from the cooling side 2, and a cold air duct 41 is installed to send hot air from the heat radiation side 3. A hot air duct 42 is provided to send the hot air. A fan 92 is provided on the air inlet side of the thermoelectric element C, and air from inside or outside the vehicle is sucked in by operating a damper 91. The thermoelectric element C is a battery 12
．． A variable resistor 11 adjusts its output.

The thermoelectric element C is an element that utilizes the Bertier effect, in which the cooling side 2 is cooled and the heat radiation side 3 is heated by flowing current from the battery 12 in a fixed direction. Between the cooling side 2 and the heat radiation side 3, there is provided an element body 1 having the Beltier effect.

When adjusting the temperature inside the car using the air conditioning system, the heating system 8 is used for heating, and the cooling system 9 is used for cooling.In the case of the latter cooling, the cooling side 2
The cold air is blown into the vehicle by a cold air duct 41, and the warm air from the other heat radiation side 3 is blown out of the vehicle by a duct 42.

[Problem to be solved]

However, in the conventional cooling device 9.

It cannot be said that the thermoelectric element C does not necessarily exhibit a sufficient cooling effect.The present inventors have repeatedly studied ways to improve the cooling ability of the thermoelectric element, and have developed the present invention by utilizing the characteristics of the thermoelectric element. It's arrived.

In addition, the inventors of the present invention will be able to improve the interior of a car more efficiently than 5.

In particular, we have studied a cooling device that can cool the rear part of a room, and have come up with two inventions.

In view of the above-mentioned conventional problems, the present invention aims to provide a cooling device that can efficiently supply cold air.

[Means for solving problems]

The present invention includes a thermoelectric element disposed in a duct and a blower that blows air to the thermoelectric element.

A cooling device comprising, on the downstream side of the thermoelectric element, a cold air duct that sends cold air from the cooling side of the thermoelectric element, and a hot air duct that sends hot air from the heat radiation side of the thermoelectric element, The cooling device is characterized in that the thermoelectric element is arranged with the cooling side at the top and the heat radiation side at the bottom, and condensed water generated on the cooling side is introduced into the heat radiation side.

What should be noted about the present invention is that the thermoelectric element is arranged with the cooling side facing upward and the heat radiation side facing downward, and the condensed water generated on the cooling side is introduced into the heat radiation side. . This condensed water is produced when moisture in the air sent around the thermoelectric element in the duct condenses due to a drop in the dew point on the cooling side.

The introduction of the condensed water is carried out, for example, by providing a large number of condensed water introduction holes that pass through the element body of the thermoelectric element.

In addition, in order to send as much condensed water to the heat dissipation side, it is preferable to provide vertical grooves on the fins on the cooling side so that the condensed water can easily drip down (see Figure 1). In order to increase the amount of cool storage on the side, it is preferable to increase the heat mass.

Also, in the above, the cold air duct and the hot air duct.

A ventilation passage that sends the cold air or hot air to a desired location.

means an air outlet. Therefore, the cold air duct and the blower duct may have short openings as shown in FIG.

Furthermore, in the above-mentioned cooling device, an air blowing switching device may be provided on the air blowing inlet side of the thermoelectric element to distribute the amount of air blowing to the cooling side and the heat radiation side. This allows air to be intermittently blown to the cooling side of the thermoelectric element and intermittently blows cold air into the interior of the car.
A comfortable feeling of cold air can be given to the driver and the like. A damper, two fans, or the like is used as such a ventilation switching device.

Further, the above-mentioned cooling device is arranged behind the rear seats of the automobile, and the cold air duct of the cooling device is arranged toward the interior of the vehicle, while the hot air duct is arranged toward the inside of the trunk room at the rear of the automobile. You can also do that. At this time, air inside the vehicle interior or air outside the vehicle interior is introduced into the cooling side of the air conditioner, while room temperature air inside the vehicle interior is introduced into the heat radiation side through an air intake duct or the like. According to the zero-wire configuration, the hot air on the heat dissipation side is introduced with a-condensed water on the cooling side, and in a state containing moisture, it wanders into the trunk room and is then discharged to the outside of the vehicle. can be used as a rear cooler, making it possible to more efficiently cool the rear of the vehicle interior.

Further, in the case where the air conditioner is installed in the rear seat of the automobile as described above, the hot air duct is

For example, it is also possible to have a communication opening in an exhaust port provided in a rear pillar of a car, so that warm air containing moisture can be directly discharged to the outside of the car.

Further, the cooling device is installed behind the rear seat of the automobile, and the upstream or downstream side of the cooling side of the thermoelectric element is connected to an air purifier equipped with a filter, a germicidal lamp, etc. It is also possible to have a configuration in which a drainage channel for flowing the condensed water outside the vehicle compartment is connected to the heat radiation side. As a result, cooled and clean air can be introduced into the interior of the vehicle. Additionally, condensed water can be discharged outside the vehicle.

[Action and effect]

In the present invention, condensed water generated on the cooling side of the thermoelectric element is introduced downward to the heat radiation side. Therefore, the cooling effect on the cooling side of the thermoelectric element is further improved. Therefore, it is possible to provide a cooling device that can efficiently obtain cold air.

The reason why the cooling effect is improved in this way is considered to be as follows. That is, the thermoelectric element is an element that has the characteristic that heat radiation from one element cools the other element based on the Bertier effect as described above.

Therefore, the amount of cooling heat increases as the temperature difference between the cooling side and the heat radiation side decreases. Therefore, if you increase the amount of heat dissipated on the heat dissipation side, the temperature on the heat dissipation side will decrease.

Since the temperature difference between the two becomes smaller, the amount of cooling on the cooling side increases.

The present invention focuses on this point, and the condensed water condensed on the cooling side is introduced to the heat radiation side so that the condensed water flows over the surface of the fins etc. on the heat radiation side.

Then, on the heat radiation side, the introduced cold condensed water removes heat from the heat radiation side. Furthermore, this condensed water vaporizes and takes away the heat of vaporization from the heat radiation side. Therefore, the heat radiation effect on the heat radiation side is promoted.

Therefore, the cooling effect on the cooling side located on the upper side is further promoted.

Furthermore, the above-mentioned cooling device according to the present invention can be used as a so-called rear cooler by being disposed behind the rear seat of an automobile as described above, and can more efficiently cool the interior of the automobile, especially the rear of the interior. can.

〔Example〕

First Embodiment The cooling device of this embodiment will be explained with reference to FIGS. 1 to 3.

This cooling device is applied to a heating and cooling system for automobiles, and as shown in FIG. 3, a thermoelectric element C is disposed in a cooling side duct 4, and an upper cooling side 2
A cold air duct 41 is provided on the lower heat radiation side 3, and a hot air tally 42 is provided on the lower heat radiation side 3.

On the upstream side of the thermoelectric element C, an air volume distribution damper 45 as an air blow switching device is pivotally supported on a bracket 44 of the duct 4.
Arrange.

As shown in FIG. 2, the cooling side duct 4 and the heating side duct 83 communicating with the heater H for the heating device are as follows.
The fan 82 is open-connected to the duct 80 downstream. fan 8
On the upstream side of 2, there is a damper 81 for switching air between inside and outside of the car.
An air path switching damper 46 is provided at the opening of the heating side spatial filter 83, and a switching damper 85 is provided at the front of the heater H. This heating and cooling device shares a fan 82.

As shown in FIG. 1, the thermoelectric element C is arranged with the cooling side 2 at the top and the heat radiation side 3 at the bottom. The thermoelectric element C includes an element body 1 having a Beltier effect.

Cooling fins 22 on the cooling side 2 and radiation fins 32 on the radiation side 3
and has. The cooling fins 22 are bonded to the element body l via the thick heat mass 21 with an adhesive layer 15. The radiation fins 32 are connected to the adhesive layer 15 via the heat mass 31.
is bonded to the element body. Note that this latter heat mass 31 may also be made thicker depending on the case.

What should be noted here is that the heat mass 21. Element body 1. A large number of condensed water introduction holes 24 penetrating through the heat mass 31 and the like are provided. Also.

The cooling fins 22 are provided with vertical holes 221 so that condensed water can easily drip down. In addition, cooling fins 22 and heat mass 21
A horizontal hole 23 is also provided between the housing and the housing so that condensed water can easily flow therebetween.

Further, in the condensed water introduction hole 24, a waterproof material such as silicone grease is provided on the wall surface of the element body 1.

Since the main cooling air conditioner is constructed as described above, it has the ninth order of effects.

That is, first, when cooling the interior of the vehicle, the duct 83 on the heating device side is closed by the damper 46, and air from the fan 82 is sent to the thermoelectric element C. and.

The cold air cooled by the cooling fins 22 on the upper cooling side 2 of the thermoelectric element C is sent into the vehicle through the duct 41. On the other hand, on the heat radiation side 3, the air that is divided and sent by the duct 45 removes heat from the radiation fins 32 on the heat radiation side 3, and the warm air is sent to the outside of the vehicle through the duct 42. Note that, if necessary, the warm air can also be sent to a specific location inside the vehicle.

In the above-mentioned cooling device, the blown air is cooled on the surface of the cooling fins 22 on the upper cooling side 2, the dew point of the air is lowered, and the moisture in the air becomes condensed water. This condensed water hangs down through the vertical grooves 221 and the like of the cooling fins 22, falls onto the heat mass 21, and then flows through a large number of condensed water introduction holes 24.

It is introduced into the lower heat dissipation side 3 and adheres onto the heat dissipation fins 32 . This adhering cold condensed water is then removed from the heat dissipation fin 3.
Cool 2. Moreover, the condensed water is further heated and evaporated, and the heat of vaporization further cools the radiation fins 32.

Therefore, the heat radiation effect on the heat radiation side 3 is promoted, and as a result, the cooling effect on the cooling side 2 is promoted as described above. Therefore, the nine-piece air conditioner can effectively obtain cold air.

In addition, in the nine air conditioner, the air volume distribution damper 45
By adjusting the position (opening degree).

You can adjust the temperature of the cold air. That is, if the damper 45 is directed upward to decrease the air volume to the cooling side 2 and increase the air volume to the heat radiation side 3, the amount of cold air to the cooling duct 41 will decrease, but cold air with a lower temperature will be obtained. It will be done. This is because by increasing the amount of air flowing to the heat radiation side 3, the heat radiation effect of the heat radiation side 3 is further improved, and the cooling effect of the cooling side 2 is further promoted.

Furthermore, when the damper 45 is directed downward to increase the amount of air flowing to the cooling side 2, a large amount of cold air but at a slightly higher temperature is sent to the cooling duct 41.

By manipulating the opening degree of the air volume distribution damper 45 as the air blowing switching device, it is possible to adjust the temperature of the cold air and also to blow the cold air intermittently, thereby sending comfortable cold air to the driver and the like. Can be done.

When the heating device is used, the thermoelectric element C is de-energized, the air passage switching damper 46 closes the passage to the cooling duct 4, and air is blown to the heater H.

According to the two examples of cooling devices described above, the characteristics of the thermoelectric element C can be efficiently utilized to efficiently obtain cold air. Moreover, since the heat mass 21 on the cooling side 2 is made large, the cold storage effect is large.

Furthermore, an air volume distribution damper 45 as a ventilation switching device
Since we have set up, its opening degree, opening/closing cycle, etc. By setting section Ii, comfortable cold air can be sent intermittently to the driver. Furthermore, in this example, since the fan 82 is shared by the heating device and the cooling device, the cost is lower than when separate fans are used as in the past (FIG. 10).

Additionally, the installation space for the fan can be reduced.

Second Embodiment As shown in FIG. 4, the cooling system of this example has a cooling air inlet side of the thermoelectric element C in consideration of the cold air effect in the cooling system.
Two fans 411 and 421 are provided as ventilation switching devices. The thermoelectric element C has a structure similar to that shown in the first embodiment (FIG. 1).

Both fans 411 and 421 are connected to the cooling side 2. of the thermoelectric element C. The two ventilation passages, which are provided on the heat radiation side 3 so as to be operated independently to blow air, are separated by two partition walls 43.

The device of this example is configured as described above.

It has the following effects. That is, for example, during the operation of the thermoelectric element C, air is blown only to the heat radiation side 3 by the fan 421. As a result, heat is radiated from the heat radiation side 3, but cooling progresses from the negative side cooling side 2, and the amount of cool storage in the heat mass 21 increases. Therefore, when the fan 411 to the cooling side 2 is operated intermittently,
The cold heat accumulated on the cooling side 2 becomes well-chilled cold air and is intermittently sent into the vehicle interior.

Therefore, according to the two examples, it is possible to provide the driver and the like with a pleasant feeling of cool air. Further, as in the first embodiment, an efficient cooling effect of the thermoelectric element can be obtained.

Note that the fan 421 on the heat radiation side 3 may be one that blows air to the heat radiation side 3 as described above, or may be one that sucks air from the direction of the heat radiation side 3.

Third Embodiment The cooling device of this embodiment shows another example of the structure of the damper 45 as the ventilation switching device shown in the first embodiment. This will be explained with reference to FIGS. 5 and 6.

The damper 51 in this example is the bracket 4 of the duct 4.
4, and has a long hole 511 below it. A crank pin 561 of the gear 56 pivotally attached to the duct 4 is inserted into the elongated hole 511. By rotating the gear 56 from the outside of the duct 4, the damper 5
Change the opening degree of 1.

According to this example, the amount of air blown to the cooling side 2 and the heat radiation side 3 of the thermoelectric element C can be adjusted, similar to the second example.

As shown in Figure 6, 3 intermittent, gradual rises,
4th Embodiment The cooling device of this embodiment has a shape in which the damper 51 of the third embodiment has a long hole 511 protruding from both ends, as shown in FIG. This is a long hole 512. The rest is the same as the third embodiment.

According to this example, as shown in FIG. 8, it is possible to obtain cold air E that rises and falls instantaneously.

Fifth Embodiment As shown in FIG. 9, the cooling device of this embodiment is one in which the gear 56 of the damper 51 in the third embodiment is rotated in accordance with the amount of air blown.

That is, the worm gear 551 is engaged with the gear 56 via the small gear 54. The worm gear 551 is provided with one rotation [55] toward the air blowing upstream side. This results in
When the two-rotor blade 55 rotates due to an increase or decrease in the amount of air blown, the gear 56 rotates accordingly, and the damper 51 opens and closes.

Therefore, the amount of air blown to the cooling side 2 or the heat radiation side 3 of the thermoelectric element C changes depending on the increase or decrease in the amount of air blown.

If the amount of air blown is large, increase the amount of air blown to the heat radiation side 3,
Cool storage is performed on the cooling side 2, and when the amount of air blown is reduced, a large amount of air is blown to the cooling side 2.

Blows cold air into the car intermittently. The amount of air blown to the thermoelectric element C is increased or decreased by adjusting the amount of air blown from the fan 82 (FIG. 2).

Sixth Embodiment In this embodiment, as shown in FIG. 10, a cooling device having a thermoelectric element C is disposed behind the rear seat 62 of an automobile 6 and is used as a rear cooler.

That is, the cooling device is disposed to penetrate through the rear flap plate 64 of the rear seat 62. Therefore, the cooling side 2 of the thermoelectric element C of the cooling device is located above the rear plate 64, and the cold air duct 201 opens toward the interior of the room. cooling side 2
A cooling fan 411 is provided at the inlet. Note that the cooling fan 411 is.

It may also be provided at the outlet of the cooling side 2.

Further, the heat radiation side 3 of the thermoelectric element C is located below the rear plate 64, and the hot air duct 301 opens into the trunk room 65. In addition, a heat dissipation fan 4 is provided at the outlet of the heat dissipation side 3.
23 will be provided. Further, an air intake duct 63 opened into the vehicle interior is connected to the inlet side of the heat radiation side 3. In addition, the reference numeral 1 in the figure is the thermoelectric element body, and 61 is the rear glass.

Other than that, the configuration of the thermoelectric element and the like are the same as in the first embodiment.

Since the cooling device of this example has the above configuration, the thermoelectric element C is energized in the cooling device.

Cooling fan 411. When the heat radiation fan 423 is activated,
A portion of the indoor air is sucked into the cooling fan 411 and enters the cooling side 2 of the thermoelectric element C, where it becomes cold air and is discharged into the vehicle interior through the cold air duct 201. Also.

A part of the indoor air is sucked in by the heat radiation fan 423 and enters the heat radiation side 3 of the thermoelectric element C, where it absorbs heat from the heat radiation fan and also vaporizes condensed water, becoming warm air and flowing into the hot air duct 30.
1 and wandered into the trunk room 65. The warm air that entered the trunk room.

It is ejected from the vehicle.

Therefore, according to this embodiment, the same effects as in the first embodiment can be obtained, and the air conditioner can be used as a rear cooler, so that the interior of the automobile can be efficiently heated.

In particular, the rear part of the room can be cooled. In addition, warm air can be discharged outside the vehicle.

Seventh Embodiment In this embodiment, as shown in FIG. 11, a cooling device is disposed on the rear plate 64 in place of the sixth embodiment.

In addition, an exhaust duct 66 is provided at the exit of the heat radiation side 3 of the thermoelectric element C.
The exhaust duct 66 is connected to the rear pillar 67 of the automobile.
It is connected to an exhaust port 671 provided in the.

Further, a heat radiation fan 422 is provided at the outlet of the heat radiation side 3.

The rest is the same as the sixth embodiment.

According to this example, the same effects as those of the sixth example can be obtained, and hot air and condensed steam can be directly discharged to the outside of the vehicle.

Eighth Embodiment As shown in FIG. 12, the cooling device of this embodiment has a thermoelectric element C disposed inside the air purifier 7, and the cooling device is mounted on the automobile rear plate 64 as in the seventh embodiment. This is what was installed.

That is, the air purifier 7 includes, on the air inlet side, an ionizer 721 for charging fine particles in the air, and a corrugated collector 722 for collecting the charged fine particles. A honeycomb activated carbon filter 723 for removing bromine from the air is provided, and a germicidal lamp 724 is provided above it. Further, a blower fan 75 and a motor 74 for the fan are provided on the air outlet side, and a thermoelectric element (Fig. 1) C shown in the first embodiment is arranged between the air inlet side and the outlet side. It was established. These components are integrally surrounded by a box 72. Also, on the heat radiation side 3 of the thermoelectric element C.

A drain vibe 73 for flowing condensed water is provided at the bottom thereof.

The drain vibe 73 opens to the outside of the vehicle.

In addition, the code|symbol 77 is an ion generator for sending anion into a vehicle interior.

In this example, the dirty air inside the car is removed by the blower fan 75.
It is sucked in from the entrance lower 1 by the ionizer 721, and first cleaned, deodorized, and sterilized by the ionizer 721 and the like. Then, the clean air enters the cooling side 2 of the thermoelectric element C and is cooled.
The air is discharged into the vehicle by the blower fan 75. In addition, the condensed water that has fallen onto the heat radiation side 3 of the thermoelectric element C is collected by the drain vibe 73.
The suspect was forced to wander out of the vehicle.

Therefore, according to this example, clean air that is sterilized and free of dust can be sent into the vehicle interior in the form of cool air. Other effects similar to those of the sixth embodiment can be obtained.

[Brief explanation of drawings]

1 to 3 show the first embodiment, in which FIG. 1 is a perspective sectional view of the thermoelectric element, FIG. 2 is an overall view of the heating and cooling device, and FIG.
4 is a side view of the air conditioner portion, FIG. 4 is a side view of the air conditioner according to the second embodiment, FIGS. 5 and 6 are side views and cold air flow diagrams of the air conditioner according to the third embodiment, and FIGS. FIG. 8 is a side view and a cold air flow diagram of the cooling device according to the fourth embodiment, FIG. 9 is a side view of the cooling device according to the fifth embodiment, and FIG.
FIG. 11 is an explanatory diagram of the arrangement of the cooling device according to the seventh embodiment. FIG. 12 is an explanatory diagram of the arrangement of the cooling device according to the eighth embodiment;
FIG. 13 is a plan view of a conventional heating and cooling device. 1...Element body. 2...Cooling side. 21...Heat mass. 22...Cooling fin. 24...#Tank water introduction hole. 3... Heat radiation side. 32...Radiating fin. 4...Duct. 41...Cold air duct 42...Warm air duct. 45...Air volume distribution damper 6...Automobile. 62...Rear seat. 65... Trunk room. ·air purifier.・Bactericidal lamp.・Thermoelectric element. ·heater

Claims (5)

[Claims] (1) Consisting of a thermoelectric element disposed in the duct and a blower that sends air to the thermoelectric element, and downstream of the thermoelectric element, a cold air duct that sends cold air from the cooling side of the thermoelectric element, and a blower that sends air to the thermoelectric element. The cooling device is equipped with a hot air duct that sends warm air from the heat radiation side of a thermoelectric element, and the thermoelectric element is arranged with the cooling side at the top and the heat radiation side at the bottom, and the condensed water generated on the cooling side is A cooling device characterized in that it is introduced into the heat radiation side. (2) In the air conditioner according to claim 1, an air switching device such as a damper is provided on the air inlet side of the thermoelectric element to distribute the air volume to the cooling side and the heat radiation side, so that air can be intermittently blown to the cooling side. A cooling device characterized by: (3) In the cooling device according to the first claim, the cooling device is arranged behind the rear seats of the automobile, and the cold air duct of the cooling device is arranged toward the inside of the vehicle, and the hot air duct is arranged behind the rear seat of the automobile. A cooling device characterized by being arranged toward the inside of a trunk room. (4) The cooling device according to claim 3, wherein the hot air duct is opened to communicate with the outside of the vehicle body. (5) In the cooling device according to the first claim, the cooling device is disposed behind the rear seat of the automobile, and the cooling side of the thermoelectric element in the cooling device has its upstream side or downstream side filtered, sterilized, etc. Connected to an air purifier equipped with lights etc.
Furthermore, the cooling device is characterized in that a drainage channel is connected to the heat dissipation side for discharging condensed water to the outside of the vehicle.