JPS63318460A - Portable heating and cooling device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a portable heating and cooling device that controls the temperature inside a case by utilizing heat absorption and heat generation phenomena such as the Peltier effect.

(Prior art) As a conventional portable heating/cooling device, for example,
Those described in Japanese Utility Model Publication No. 34472, Japanese Utility Model Publication No. 52-41570, Japanese Utility Model Publication No. 57-53358, etc. are known.

This conventional portable heating/cooling device has a case consisting of a main body in which objects to be heated and cooled are stored, and a lid provided at the bottom of the case. Equipment such as a heat exchanger and heat dissipation fan was attached, and an inner box made of a heat conductive material such as aluminum was provided inside the main body, and the heat was radiated and absorbed by the heat exchanger. (Problems to be Solved by the Invention) However, in such conventional portable heating and cooling devices, devices such as heat exchangers and heat dissipation fans are installed at the bottom of the main body of the case. In order to ensure a predetermined heat exchange efficiency without interfering with air circulation in the case, there was a restriction that other objects could not be placed around the case.

That is, especially when transporting a plurality of heating and cooling devices, it was not possible to place them on bamboo grass, which was inconvenient.

In addition, because the temperature inside the case was controlled by heating and cooling the inner box installed inside the main body of the case, even among the cold objects stored inside the case, there was no direct contact with the inner box. There was a problem in that the two parts were separated into two parts: one part was in contact with the other part, and another part was not in contact with the other part, resulting in a large temperature difference between the two parts.

(Means for Solving the Problems) The present invention has been made for the purpose of solving the above-mentioned problems, and in order to achieve this purpose, in the present invention, heat exchange is performed inside and outside the case. a heat exchanger, a control circuit that controls the operation of the heat exchanger, a heat conduction plate that is disposed inside the case and that radiates and absorbs heat by the heat exchanger, and air that circulates the air inside the case. A circulation fan is attached to the lid of the case, which is composed of a main body and a lid on the upper part of the main body.

(Function) Therefore, in the portable heating and cooling device of the present invention, first, when the control circuit performs heating control, the heat exchanger absorbs heat from the outside and radiates heat to the heat conduction plate. The board is gradually heated. By heating the heat conduction plate attached to the case, the air in the upper part of the case is warmed,
The warm air is stirred by an air circulation fan to evenly warm the inside of the case.

Next, when the control circuit performs cooling control, the heat exchanger absorbs heat from the heat conduction plate and radiates heat to the outside, cooling the air in the upper part of the case, and the cool air is stirred by the air circulation fan. The inside of the case will be cooled evenly.

In this way, the temperature of the air inside the case is controlled while being circulated by the air circulation fan, and since the heat conduction plate is attached to the lid of the case, it is possible to The cold object can be stored in the case so that it does not come into direct contact with the heat conduction plate, and the object to be heated and cooled can be heated and cooled uniformly as a whole.

In addition, since the control circuit, heat exchanger, heat conduction plate, and air circulation fan are all installed in the case lid, the main body
There are no restrictions on shape or material, and
Since heat exchange takes place at the top, other items can be placed nearby or placed side by side.

(Example) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the configuration of the embodiment shown in the drawings will be explained.

As shown in the drawings, the portable heating and cooling device of this embodiment mainly consists of a case 10. Mecha cover 20. Heat exchanger 30, heat radiation fan 40. Control device 50. Electrical wiring 60, heat conductive plate 70.
It is composed of an air circulation fan 80.

The case 10 is made of a heat insulating material such as urethane, and includes a main body 11 in which a heated or cold object a is housed, and a lid 12 provided on top of the main body 11. Furthermore, these main bodies 11
and the lid body 12 fit into each other at their peripheral edges and form a ball.

In addition, the mechanical cover 20 described below. Heat exchanger 30, heat radiation fan 40. Control device 50. Electrical wiring 60, heat conductive plate 70. All of the air circulation fans 80 are attached to the lid 12 of the case 10.

The mechanical cover 30 is provided on the upper surface of the lid I2 of the case 10, and houses the heat exchanger 30, the heat radiation fan 40, the control device 50, and the electrical wiring 60.

The heat exchanger 30 includes a Peltier element 31 based on the Peltier effect.
and fins 32 to exchange heat between the inside and outside of the case 10.
The fins 32 are fitted into the insertion holes 121 of the fins 32, and the fins 32 are disposed above the Peltier element 31 and outside the lid body 12.

The heat dissipation fan 40 is disposed above the fins 32.

The control device 50 includes a calculation device (not shown) that compares and calculates the control temperature inside the case 10 sensed by the temperature sensor 51 and a predetermined set temperature that has been input in advance, and a calculation device (not shown) that compares and calculates the control temperature inside the case 10 sensed by the temperature sensor 51 and a predetermined set temperature that is input in advance. ON/0FFi of exchanger 30
A control circuit (not shown) that performs the operation and also moves the electrodes of the Peltier element 31 is incorporated. Note that due to the electrode migration of the Peltier element 31, the heat exchanger 30
A switching operation between heating operation or cooling operation is performed.

In addition to the main power source, the electrical wiring 60 is also provided with a main switch for turning on and off all devices such as the control device.

As a power source, rechargeable batteries, dry batteries, solar cells, household electricity, car batteries, etc. can be used.

The heat conduction plate 70 is made of aluminum or the like, is placed close to the heat exchanger 30, is stretched over the inner surface of the lid 12, and is used to radiate or absorb heat by the heat exchanger 3o. A partition plate 71 is provided below the heat conduction plate 70 with a predetermined gap therebetween, and a duct 72 is formed between the heat conduction plate 7o and the partition plate 71. .

The air circulation fan 80 is disposed in the middle of the duct 72, and stirs the warm or cold air inside the duct 72 that has been heated or cooled by the heat conduction plate 7o to keep the temperature inside the case 1o uniform. It is.

Next, the operation of the embodiment will be explained.

The operation of the portable heating and cooling device of this embodiment will be explained.

First, when the temperature sensor 51 detects that the controlled temperature inside the case IO is lower than the set temperature, the control device 5
o performs heating control on the heat exchanger 3o. Through this heating control, the heat exchanger 3o performs an operation of absorbing heat from the outside and dissipating heat into the inside of the case 10, and the heat conductive plate 7o is gradually heated. By heating the heat conduction plate 70, the air in the duct 72 formed at the upper part of the inside of the case 10 is warmed, and the warm air is stirred from the duct 72 to the entire inside of the case 10 by the air circulation fan 80, and the warm air is stirred throughout the inside of the case 10. The interior will be heated evenly. This heating operation continues until the temperature inside the case 10 reaches the set temperature.

Next, when the temperature sensor 51 detects that the controlled temperature inside the case IO is higher than the set temperature, the control device 5
0 performs cooling control on the heat exchanger 30. Through this cooling control, the heat exchanger 30 operates to absorb heat from inside the case 10 and radiate heat to the outside, and the heat conductive plate 70 is gradually cooled. Then, the air inside the duct 72 is cooled, and the cool air is passed through the duct 7 by the air circulation fan 80.
2 into the case 10, and the inside of the case 1o is uniformly cooled.

Further, when the temperature sensor 51 detects that the controlled temperature inside the case 10 is approximately equal to the set temperature, the control device 50 performs an OFF operation to stop the operation of the heat exchanger 30.

° Heating/cooling action of heat exchanger 30 and air circulation fan 8
When the air stirring action of the case 10 stops, there is no heat conductive material layer on the inner wall of the main body 11 of the case 10, and the forced convection of air also stops. Heat dissipation into the case 10 is reduced, and the inside of the case 10 is maintained at a predetermined temperature even when the power is turned off.

Note that after the operation of the heat exchanger 30 is stopped.

When the temperature sensor 51 detects that the controlled temperature inside the case 10 is higher or lower than the set temperature, the control device 50 turns on the heat exchanger 30 again and starts operating the heat exchanger 30, as described above. Then, either heating control or cooling control is performed.

Therefore, the portable heating and cooling device of this embodiment can always maintain the temperature inside the case 10 at a predetermined temperature (constant temperature) regardless of the outside temperature.

Furthermore, since air is circulated through the duct 72, fine adjustment of the temperature within 0.5°C is possible.

Moreover, these heat exchangers 30. Heat dissipation fan 40° control device 50. Electrical wiring 60. Heat conduction plate 70. air circulation fan 8
0 are all attached to the lid 12 side, and nothing is attached to the main body 11, so the shape, material, etc. of the 1 main body 11 are not restricted by these. That is, case 1
By using a material with excellent chemical resistance as the material for the body 11 of the 0, it is possible to store specimens, etc. as shown in the drawing, and the range of use can be expanded compared to conventional methods. It can also be shaped into a suitable container shape. Furthermore, the same lid body 12 can be used in various bodies 1 having different shapes.
1 can also be applied.

In addition, since heat exchange is performed at the top, other items can be placed nearby or placed side by side, making it especially convenient for transportation.

In addition to circulating the air inside the case 10 with an air circulation fan 80 to make it uniform, a heat conduction plate 70 is stretched over the lid 12 to directly heat the cold object a. Since it can be stored inside the case 10 so as not to come into contact with the conductive plate 70, the object to be heated and cooled a can be heated and cooled uniformly as a whole. Further, the main body 11 of the case 10 is easy to clean, and sanitary control is easy.

In particular, during cooling, the cold air flows from top to bottom, increasing the cooling effect. In addition, air agitation, as shown in the figure,
It is effective to allow the water to flow downward along the inner wall surface of the main body 11. This is because when a large number of objects to be heated and cooled, such as test tubes, are lined up, the air reaches the bottom of the tube along the inner wall surface.
It is effective for heating and cooling to rise between the heated and cold objects a and reach the air circulation fan 80.On the other hand, simply blowing down from above toward the heated and cold objects a causes the air to flow to both sides. This is because it spreads out and is difficult to reach the bottom of the main body 11.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are design changes within the scope of the gist of the present invention, they are included in the present invention. It will be done.

For example, in the example, an example was shown in which the input is input to the control device to maintain the inside of the case at a predetermined set temperature, but if necessary, the temperature can be adjusted in three steps, for example, 20°C, 15°C, and 95°C. It may be possible to do so.

Further, in the embodiment, warm or cold air heated or cooled by the heat conductive plate is circulated inside the case through the duct, but the duct does not necessarily need to be provided.

In the example, the temperature was adjusted by heating and cooling with a heat exchanger, but it goes without saying that if the heat loss from the case is balanced, the heat exchanger only needs to perform either cooling or heating. .

(Effects of the Invention) As explained above, in the portable heating/cooling device of the present invention, other items can be placed around the case, and the heating/cooling devices can be placed side by side. Particularly, the advantage is that it is convenient during transportation.

In addition, in addition to circulating the air inside the case with an air circulation fan to make it uniform, it is possible to store the heated and cold objects inside the case so that they do not come into direct contact with the heat conduction plate. This provides the effect that the object to be heated and cooled can be heated and cooled uniformly as a whole.

Furthermore, by using a material with excellent chemical resistance as the material for the case body, the scope of use can be expanded compared to the conventional case.

[Brief explanation of drawings]

The drawing is a longitudinal sectional view showing a portable heating and cooling device according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 10... Case 11... Main body 12... Lid body 30... Heat exchanger 40... Radiation fan 50... Control device (control circuit) 70... Heat conductive plate 80... air circulation fan

Claims (1)

[Claims] 1) A heat exchanger that exchanges heat inside and outside the case, a control circuit that controls the operation of the heat exchanger, and a control circuit that is disposed inside the case and that dissipates and absorbs heat by the heat exchanger. and an air circulation fan that circulates air inside the case are attached to the lid of the case that is composed of a main body and a lid on the upper part of the case. Portable heating and cooling device. 2) A partition plate is provided below the heat conduction plate at a predetermined interval, and a gap is provided between both ends of the partition plate and the inner wall surface of the main body of the case to separate the heat conduction plate and the partition. 2. The portable heating/cooling device according to claim 1, wherein a duct is formed between the heating and cooling device and the plate. 3) The portable heating/cooling device according to claim 1, wherein the inner wall of the main body of the case is made of a non-thermal conductive and chemical resistant material.