JPH07260188A - Cold storage type cold air apparatus with peliier device - Google Patents

Abstract

PURPOSE:To ensure a high efficiency air-conditioning operation by reducing the number of mounted expensive Peltier devices and keeping a higher air- conditioning capability over a long time by providing water or ice as cold storage means in a cooling container including a Peltier device. CONSTITUTION:Ice (water) 3 is subjected to heat-absorption (cooling) effect through a Peltier device in a cooling chamber 12, i.e., on the side of cooling. Then, a heat transfer fin 5a is cooled with the ice (water) 3, and in succession a heat absorption fin 5 and a cold air fin 5b are cooled and finally cold air cooled with the cold air fin 5b is blasted with a cold air fan 8 from an opening/ closing door 11 to the outside of a cooling container 7. In contrast, on the side of heat radiation outside the cooling container 7, the heat-producing Peltier device radiates heat through a heat radiation fin 6 and a heat radiation fan 9 discharges heated air. Hereby, the number of expensive Peltier devices is reduced and a higher air-conditioning capability is kept for a high efficiency air-conditioning operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerator type cold air device having a Peltier element.

[0002]

2. Description of the Related Art Heretofore, a cold air device provided with a Peltier element has been disclosed in Japanese Patent Application Laid-Open No. 1-200122 (first publication). In this device, heat absorption fins and heat dissipation fins are provided on both sides of the Peltier element for heat absorption and heat dissipation, and heat absorption fans and heat dissipation fans are arranged so as to face the fins, and a hood (duct) covers each fan. It has a flow path for cold and warm air.

Further, although the fields are different, cooling containers mainly for fluids using a Peltier element and a regenerator material are, for example,
It is disclosed in Japanese Patent Application Laid-Open No. 61-127465 (second publication).

FIG. 5 shows a partially cutaway front view of this conventional example. In the figure, the same bottomed tubular cooling cylinder 34 that concentrically covers the inner cylinder 31 is arranged outside the inner cylinder 31,
A cool storage material 35 is filled and sealed between the cylinder 31 and the cooling cylinder 34. Then, on the inner surface of the heat dissipation plate 38, the Peltier element 4
0, and a male connector 41 for supplying DC power to the Peltier element 40 is attached to the outer surface of the heat radiating plate 38.
And the cooling surface 40b is pressed against the bottom surface of the cooling cylinder 34. This cooling container includes a Peltier element 40 and a heat radiating plate 3.
8 can be removed downward and can be pre-cooled in a refrigerator by removing the heat radiating plate 38 and the like, and when carrying out, the Peltier element 40 is supplied with power from the male connector 41 to enhance the cold insulation effect.

[0005]

However, in the first publication, there is no cold storage means (heat storage means), and both the heat absorbing portion (cooling portion) and the heat radiating portion (heating portion) by the Peltier element are cut off from the outside world. However, even if cold storage (heat storage) is performed, energy loss is very large, and it is not possible to obtain desired cold air (warm air) in combination with the low cooling capacity (heating capacity) of the Peltier device. Moreover, if the number of Peltier devices is increased to improve the performance, the power consumption is increased and the device is inevitably increased in size.

Further, the cooling container of the second publication is used as a water bottle or a thermos bottle, and only the heat radiation (exhaust heat) fins are attached to the Peltier element, and the heat absorption (cooling) fins are Heat absorption (cooling) without heat pipe
Although it is suitable for cooling liquids such as juice and water, it cannot be used at all for cooling gas.

Further, a material used as a cold storage material is not disclosed. There is ethylene glycol as a commercially available regenerator, but it has low specific heat, heat capacity, and heat of fusion, so it has a low regenerator capacity. The increase device was large.

A basic object of the present invention is to perform a highly efficient cooling / heating operation by reducing the amount of expensive Peltier elements to be mounted in a regenerator type cold air apparatus using a Peltier element and maintaining a high cooling / heating capacity for a long time. To provide a device.

It is therefore an object of the present invention to provide a structure for increasing the heat transfer efficiency between the cool storage means for performing a high-level cooling operation for a long time and the cool storage means and the means for cooling the outside air. It is also intended to supply cold air quickly at the start of cooling.

It is another object of the present invention to provide a structure for storing cold energy while saving cold energy.

[0011]

According to a first aspect of the present invention, there is provided a regenerator having a Peltier element characterized by having water or ice as regenerator in a cooling container having a Peltier element. It is a cold air device (Claim 1). Ice or water is absorbed by the Peltier element with or without the heat transfer member, and the temperature of the ice or water is lowered to store cold.
By changing from water to ice, a large endothermic capacity equivalent to the heat of melting of ice is stored.

In a second aspect of the present invention, a cooling container, a Peltier element attached to the cooling container, a first heat absorbing member provided so as to absorb heat by the Peltier element, 1 a heat storage means provided so as to be absorbed by a heat absorption member, and a second heat absorption member provided so as to be absorbed by the cold storage means and to absorb heat from the outside air, and the first heat absorption member, the cold storage Means, and second
A regenerator-type cold air device having a Peltier element, characterized in that all of the heat absorbing members are housed in the cooling container (claim 2).

[0013]

A third preferable means is, in the second aspect of the present invention, a cold storage cold wind provided with a Peltier element according to the second means, characterized in that the cold storage means is water or ice. It is a device (Claim 3).

In the first or second aspect of the present invention, a fourth preferred means is to close the cold air outlet provided in the cooling container during cold storage and repeat opening or closing during cold air outlet. A regenerator-type cold air device equipped with a Peltier element according to any one of the first to third means characterized in that an opening / closing means is provided (Claim 4). Note that the opening means to be opened continuously, and the repeated opening and closing means to be opened intermittently.

A fifth preferable means is that, in the second aspect of the present invention, the second heat absorbing member is provided with a large number of rod-shaped bodies and / or plane-shaped bodies which come into direct contact with the cold storage means. It is a regenerator type cold air device provided with the Peltier device according to any one of the second to fourth means characterized by (claim 5).

In a second aspect of the present invention, a sixth preferred means is characterized in that the first and second heat absorbing members define a cold storage tank for storing the cold storage means. It is a regenerator type cold air device provided with a Peltier element according to any one of the fifth aspect (claim 6).

A seventh preferred means is, in the second aspect of the present invention, characterized in that the second heat absorbing member has a vent hole between at least one cold storage means and the outside air. A regenerator-type cold-air device including a Peltier element according to any one of the sixth aspect (claim 7). As a result, when water or ice is used as the cold storage material, a structure such that the cooling chamber or the like is not destroyed due to volume expansion accompanying the transformation of water into ice during cold storage.

An eighth preferable means is, in the second aspect of the present invention, provided with a blowing means for blowing the outside air absorbed by the second heat absorbing member to the outside of the cooling container in the cooling container. It is a regenerator-type cold air device provided with a Peltier device according to any one of the second to seventh means characterized in that (claim 8). The heat-absorbed outside air is cold air introduced into the cooling container and cooled by the second heat-absorbing member.

[0019]

The Peltier element is a thermoelectric conversion element in which heat is generated (heat dissipation) on one contact side and heat is absorbed (cooling) on the other contact side by passing an electric current. As the material, Bi ₂ Te ₃ system (P type or N type), (Bi ₂ S
b) ₂ Te ₃ (P type) and Bi ₂ (TeSe) ₃ (N type) are used. P-type and N-type semiconductors having high thermoelectric power and low electric resistance and thermal conductivity are preferable.

However, the cooling (heating) capacity of the Peltier device is one Peltier unit (100 × 100 ×
It is as small as 6 to 10 watts per 150), and a large number of expensive Peltier elements are required for use in an actual air conditioner. Therefore, the device has to be large in size, and even if it is used as a local heating and cooling device for study desks, beds, toilets, etc., by taking advantage of the quietness of the cooling and heating device that uses the Peltier element, in order to obtain the desired capacity. Needed a lot of space.

The present invention is a regenerator type cold air device equipped with a Peltier element that solves the above problems. One of them is that all the cooling parts are housed in a cooling chamber (in a cooling container) surrounded by heat insulating walls. It is characterized by

The cooling unit is heat absorption (cooling) of the Peltier element.
Surface, a heat transfer means (first heat absorption member) between the heat absorption surface of the Peltier element and the cool storage means, a cool storage means, and an outside air cooling fin that is a heat absorption means provided so as to absorb the outside air. 2 endothermic member).

Since all the cooling parts are housed in the cooling chamber in this way, a very compact structure can be provided, and an opening / closing port separating the cooling chamber from the outside can be provided, which is opened only during cooling and during cooling. By closing
Useless outside air cooling (heat absorption) during cold storage can be prevented.

Further, the cooling chamber as described above may be provided with a means for directly introducing the outside air into the cooling chamber and a means for blowing cold air, which makes the apparatus compact. For example, a fan.
Further, the means (fan or the like) may be provided outside the cooling chamber. Further, the outside air may be pressure-fed by a compression pump or the like toward the cooling chamber so as to come into contact with the fins for cooling the outside air.

Further, by providing an outside air introduction port and a cold air discharge port in the cooling chamber so that the outside air circulates in the cooling chamber and is cooled and discharged, the amount of heat absorbed per volume of outside air introduced into the cooling chamber is improved. Is preferable. Such a circulating flow can be implemented by installing one fan at the outside air inlet or the cool air outlet. Therefore, the device becomes compact.

Further, conventionally, ethylene glycol and dry ice have been used as the regenerator in the cold air or the cooler. This ethylene glycol has a small heat capacity and a low heat of fusion and does not serve as a large capacity regenerator material. Further, since dry ice sublimates from solid to gas and expands significantly in volume, it is not suitable for a closed container or a device that is used continuously, and a sturdy pressure partition wall is required for use.

Therefore, the present invention proposes to use water or ice as the cold storage material. Water (ice) has a large heat capacity, and when it transforms from ice to water, it takes a very large heat of fusion (79.7 cal / g) from the outside world, and thus exhibits a high cold storage capacity (cooling capacity). Therefore, if water is made into ice during cold storage, a high level of cold air can be continuously supplied during cooling.

As a result, the low performance of the Peltier device can be compensated for, and a high-performance cold air device can be provided without mounting a large amount of expensive Peltier devices. 200g of ice
So, about 1 Peltier unit (1 x 100 x 100 x 1
50) It is possible to store cold equivalent to 4 x 30 minutes of operation.

In order to perform the cooling operation with high efficiency and to supply the cool air immediately at the start of cooling, the cool storage material and the outside air are cooled between the heat absorbing surface of the Peltier element and the cool storing means (first heat absorbing member). The heat transfer efficiency between the fins (the second heat absorbing member) and between the fins for cooling the outside air and the outside air (the second heat absorbing member) must also be good.

For example, in a structure in which the regenerator material consisting of water or ice and the fins for cooling the outside air transfer heat via air, the air has an extremely low heat transfer coefficient as compared with water (ice), and quick heat absorption is achieved. It has a drawback that it is difficult to obtain cold air.

However, if the regenerator material and the regenerator tank (for example, defined by the first and second heat absorbing members) have the same volume (volume), the volume change at the time of transformation from water to ice (of the regenerator material) Since the cold storage tank is destroyed by the change in volume due to temperature change), the cold storage tank needs a void (air layer) of a constant volume. However, the air layer has a low heat transfer coefficient.

In that respect, a part of the fins for cooling the outside air (a large number of rod-shaped members, a sheet-like member) or a part of the fins that are in contact with the fins for cooling the outside air with or without a good heat transfer member such as aluminum. (Many rods and sheets) is a cold storage material (water or ice)
If it is in contact with, the heat transfer ability is significantly improved compared to the case where heat is transferred via air. Further, the first endothermic member and the second endothermic member may be integrally molded or brought into direct contact with each other. In both cases, the heat transfer capacity is improved. In particular, if there is the above-mentioned cooling chamber opening / closing door, it is closed during cold storage, and the heat absorption energy of the Peltier element is not released to the outside air, resulting in high energy efficiency.

When ice (water) is used as the cold storage material, there is a high possibility that the cooling chamber or the like will be destroyed due to the volume expansion accompanying the transformation of water into ice during the cold storage. It is preferable to provide ventilation holes in the fins for the cold air that define the outer wall of the tank and are in contact with the outside air and the heat storage material, and reduce the pressure change in the cold storage tank (and the cooling chamber) due to the transformation of the cold storage material. When such a vent is provided, in particular, by providing an opening / closing door for storing the entire cooling side device in the container,
If the opening / closing door is closed during cold storage (during ice making), it will not wastefully absorb the outside air.

Further, the cold storage means (water or ice) is stored in a cold storage tank in which a heat absorption (heat transfer) means (fin) made of a material (aluminum) having a high heat transfer coefficient forms an outer wall. As a result, there is no need to newly provide a cold storage tank, which leads to saving of parts and downsizing of the device, and moreover, heat transfer between the cold storage means and the heat absorption (heat transfer) means is improved.

As means for blowing the cool air cooled in the cooling chamber, in addition to the fan, a heat pipe is introduced into the cooling chamber to cool and blow the air in the heat pipe, or the air is forced into the cooling chamber. It is possible to employ a configuration in which the material is cooled (blown), cooled in the cooling chamber, and discharged to the outside.

Since the present invention is a cold air device, water or ice is used as a cold storage material, but from a different point of view, it is an ice making device equipped with a Peltier element, and is used as a cooling container, cold air fins, or cold storage tank. If an ice outlet is provided, it can be a highly efficient ice making device.

Further, since the device of the present invention does not have a large-sized device such as a compression rotary machine, it can be made extremely compact and has no noise part. Therefore, it is very suitable for a local cooling device such as a bed, a desk or a toilet. Are suitable. Further, it is also suitable as a device for performing daytime cooling by performing cold storage using inexpensive nighttime electric power.

In each of the present inventions, the cool storage material is replaced with a heat storage material, and for example, SiC or S having large specific heat and thermal conductivity is used.
As a ceramic such as i ₃ N ₄ or the like, by reversing the energization direction to the Peltier element, a heat storage type heating device is obtained.

[0039]

【Example】

<Embodiment 1> FIG. 1 is a schematic cross-sectional view showing the structure of a Peltier cool storage apparatus according to a first embodiment of the present invention, in which a cooling unit is housed in a cooling chamber 12, and ice (water) 3 is a cold storage material. Is used as. That is, an electrode layer and an insulating layer (not shown) are formed on both surfaces of the Peltier element to form the Peltier unit 1. The electrode layer is connected to a DC power supply (not shown). The Peltier unit 1 is fitted to the outer wall of a cooling container 7 made of a heat insulating material unit, and a cooling fin 6 is fitted to the outside of the cooling container 7 so as to be in close contact with the heat radiation side surface of the Peltier unit 1. ing. Further, a cooling fan 9 is provided so as to face the heat radiation fins 6.

On the other hand, the inside of the cooling container 7, that is, the cooling chamber 12
Has the following structure. Ice (water) that is in close contact with the heat absorbing side surface of the Peltier unit 1 and is a regenerator material
A good heat transfer cooling member 2 (first heat absorbing member) holding 3 is fitted in the container 7. The heat transfer fin portion 5 a, which is a part of the heat absorption fin 5, is inserted into the ice (water) 3 on the cooling member 2. And the heat transfer fin portion 5
A fin portion 5b for cold air, which is a part of the heat absorbing fin 5 (second heat absorbing member), is provided on the opposite side of a. This heat absorbing fin 5 has a vent hole 10. The space defined by the cooling member 2, the heat transfer fin portion 5a, and the heat absorption fin 5 is
It is a cold storage tank that holds ice (water) 3 and an air layer 4. A fan 8 for cold air to face the fins 5b for cold air
Is provided. The above is the structure in the cooling chamber 12.
An opening / closing door 11 made of a heat insulating material unit is provided above the cold air fan 8 to serve as a cold air outlet.

Next, the operation will be described with reference to FIG. When a current flows through the Peltier element, heat is generated (heat dissipation) on one surface and heat absorption (cooling) occurs on the other surface. In this embodiment, the outside (lower side in the figure) of the cooling container 7 provided with the Peltier unit 1 is the heat radiation side, and the inner side (upper side in the figure) of the cooling container 7 is the heat absorption (cooling) side. The current is flowing.

In the cooling chamber 12, that is, on the cooling side, the ice 3 (or the state of water) is absorbed (cooled) by the Peltier element via the cooling member 2 having a good heat transfer property. Next, the heat transfer fin portion 5a is cooled by ice (water), and then the heat absorption fin portion 5a.
The cold air fin portion 5b is cooled, and finally, the cold air fan 8 blows out the cold air cooled by the cold air fin 5b from the opening / closing door 11 to the outside of the cooling container 7. The vent holes 10 prevent the pressure rise of the air layer 4 and the destruction of the heat transfer fins 5a and the like due to volume expansion accompanying the phase transformation from water to ice, and also serve as vent holes for cold air.

On the other hand, on the heat dissipation side outside the cooling container 7,
The generated Peltier element radiates heat through the cooling fins 6, and the cooling fan 9 releases the warmed air.

In particular, when the regenerator material is water or ice as in this embodiment, a very large heat of fusion (79.7 cal / g) is taken from the outside when the ice is transformed into water, so that a high cooling capacity is obtained. Exert. That is, if the ice 3 is formed, the endothermic fins 5 and the cold air fin portions 5b are strongly cooled by the endothermic action of the heat of melting thereof, and cold air can be obtained for a long time. This makes it possible to compensate for the low capacity of the Peltier device, and even if the Peltier unit 1 is one, it is possible to obtain the same cooling capacity as that provided with a large number of Peltier units 1.

Also in the second aspect of the present invention, it is most preferable to use ice (water) as the regenerator material, but other regenerator materials such as ethylene glycol can also be used.

Further, the heat transfer fin portion 5 is placed in the ice (water) 3.
Since a is inserted and is in direct contact with the ice (water) 3, the heat transfer (heat absorption) between the two is good. The heat transfer fin portion 5a is integrated with the heat absorption fin 5 in the present embodiment, but may have a structure in which the heat transfer fin portion 5a and the heat absorption fin portion 5a are closely connected to each other as long as the heat transfer property is high. The same applies to the fin portion 5b for cold air.

Further, in the cooling chamber 12 as described above, an air blowing means, that is, a means for introducing outside air into the cooling chamber and a cool air blowing means (cool air fan 8) may be installed so that the cold air does not leak when the cold air is blown. This reduces the directivity, increases the compactness of the device, and reduces the possibility of damaging the blowing means (cold air fan 8) even when the device is moved. In addition, the cooling chamber 12
Inside, so that the cool air fin portion 5b comes into contact with and absorbs heat,
The outside air may be pressure-fed by a compression pump or the like.

<Embodiment 2> FIG. 2 is a schematic sectional view showing the structure of a Peltier cool storage apparatus according to Embodiment 2 of the present invention.
A regenerative cold wind equipped with a Peltier element, which has a relatively simple structure of the heat-absorbing fins 5 as compared with FIG. 1 and does not have the heat-transfer fins (5a in FIG. 1). It is sectional drawing of an apparatus. The description of the parts having the same configurations as those in the first embodiment will be omitted.

That is, inside the cooling container 7, the ice 3 which is in contact with the heat absorbing side surface of the Peltier unit 1 and which is a regenerator material
A cooling member 2 having a good heat conductivity holding therein is fitted in the cooling container 7. The heat-absorbing fins 5 provided with the ventilation holes 10 serve as the lid of the cooling member 2.

As described above, the Peltier cool storage device can be constructed with a relatively simple structure (structure not having fins for heat transfer) as compared with the first embodiment. Further, the cooling member 2 and the heat absorbing fins 5 are in direct contact with each other, so that the heat transfer property is high. Further, the cooling member 2 and the heat absorbing fins 5 respectively define the bottom portion, the side portion and the lid portion of the cold storage tank for the ice 3, so that it is not necessary to separately provide a cold storage tank (ice holding container).

<Embodiment 3> This embodiment is the embodiment 1 or 2.
In the opening / closing door of the cooling chamber 12, the opening / closing door 11 controls opening / closing depending on the operating state of the device.
Is a regenerator type cold air device having a Peltier element.

FIG. 3 shows a cold-storage cold-air system having a Peltier element provided with an opening / closing door 11 of a cooling chamber 12 that opens / closes according to the situation (cooling / cooling) in FIG. 1 according to the first embodiment. That is, the opening / closing door 11 is opened only when the cold air is blown, and the opening / closing door 11 is closed at other times. As a result, cold storage (ice making) is possible without the cooling chamber 12 being warmed from the outside. As a result, the power consumption during cold storage (ice making) is reduced, and the number of Peltier elements, which are inferior in capacity to compressor cooling, can be reduced. Moreover, even if water is iced for a long time with cheap electricity at night, energy loss is small.

Further, by controlling the opening and closing of the opening / closing door 11 even during cooling, a fluctuation (1 / f fluctuation etc.) is given to the cooling (cold air), and the minimum cooling capacity (power consumption, cold storage capacity, and device) is provided. The size of) can give the maximum cooling effect.

In FIG. 3, the opening / closing door 11 is opened and closed by a hinge, but an electric shutter or the like may be used. It may also be manual.

<Embodiment 4> FIG. 4 shows a regenerator type cold air blower having a Peltier element provided with a controller 18 for controlling the operation or opening / closing of a blower fan and a valve in a cooling fluid passage. The description of the parts having the same configurations as those in the first embodiment will be omitted.

A suction valve 14 for the outside air is provided on the outer wall of the cooling chamber 12 and serves as an inlet of a key-shaped air passage in the cooling chamber 12. A discharge valve 13 is provided between the flow path outlet in the cooling chamber 12, that is, between the cooling chamber 12 and the duct 16 and serves as a discharge port for cooled outside air. A blower fan 17 is provided on the duct 16 side of the discharge valve 13 to suck the outside air and blow the cool air. The duct 16 is a passage that discharges cool air from the air outlet 15 to the outside. A regenerator 3 is arranged in the cooling chamber 12 and is in close contact with the cooling member 2.

Next, the operation will be described in detail. When a current flows through the Peltier element, heat is generated (heat dissipation) on one surface and heat absorption (cooling) occurs on the other surface. In this embodiment, the outside of the cooling chamber of the Peltier unit 1 is the heat radiation side,
An electric current is applied so that the inside of the cooling chamber is on the heat absorption (cooling) side. Inside the container, that is, on the cooling side, the Peltier element cools the regenerator material 3 in the regenerator via the cooling member 2 having a good heat conductivity, and cools it.

On the other hand, during cooling, when the suction valve 14 is opened and the outside air is introduced into the cooling chamber 12 by the blower fan, the outside air passes through the inside of the cooling chamber 12 (circulation) while being cooled by the cooling member 2 and the cold storage tank 3. And the discharge valve 13 also opened
The cold air is blown out of the apparatus from the air outlet 15 after passing through the duct 16. The cooling member 2 and the cold storage tank 3 also serve as heat absorbing means for the outside air, and cool the outside air.

The suction valve 14, the discharge valve 13, the blower fan 17, and the blowout port 15 are operated by the controller 18. That is, in response to a command from the control device 18, the discharge valve 13 is opened and the blower fan 17 is operated. At the same time, the suction valve 14 is opened, and the outside air is introduced into the cooling chamber 12, the heat is absorbed (cooled) by the regenerator 3 and the cooling member 2, and the cool air is discharged from the outlet 15 through the duct 16.

The control device 18 is an ON-OFF timer, and controls so as to stop at night (at the time of sleeping) and perform operation (cooling) at the time of day (at the time of activity), for example. In addition, a manual switch, a temperature sensor, an infrared sensor, or the like may be provided to operate (cool) by sensing high temperature or human activity. In either case, cool storage / cooling can be performed efficiently.

By adopting such a structure as described above, the cooling chamber 12 and the outside world are cut off during cold storage, and the cooling chamber 12 is brought into conduction with the outside world only during cooling, thereby eliminating wasteful heat absorption (cooling) efficiently. Can perform cooling.

By the way, if the air conditioning is continuously performed, the human sense is paralyzed and the user does not feel much cool. However, according to the control device 18 of the present apparatus, during the air conditioning,
Blower fan 17, discharge valve 13, and suction valve 14 intermittently
By releasing the operation, the cooling can be performed intermittently, and a great feeling of cool breeze can be given with low power consumption. Therefore,
This leads to effective utilization of the Peltier element having a small capacity, and a large cooling effect can be obtained for a long time even with the heat capacity of the small regenerator 3.

[0063]

EFFECTS OF THE INVENTION The regenerator-type cold-air device of the present invention uses ice (water) as a regenerator to utilize a very large heat of fusion (79.7 cal / g) at the time of phase transformation from ice to water. As a result, a large amount of cold storage is possible, which compensates for the low cooling capacity of the Peltier element and enables long-term cooling.
Therefore, the required amount of expensive Peltier device can be reduced and the entire device can be downsized. In addition, since the regenerator material is water (ice), convection occurs during cooling in a water state, so that heat transfer (heat absorption) is good, and there is an advantage that water can be quickly turned into ice and large regenerator can be stored ( Applicable to claim 1).

Further, the Peltier element heat absorbing surface, the first heat absorbing member (cooling member 2), the regenerator (ice (water) 3), the second heat absorbing member (heat absorbing fin 5 (heat transfer fin 5a, cold air fin 5)
By storing all b)) in a cooling container (inside the cooling chamber 12), a compact structure is achieved, and in addition cold air does not easily escape during cold storage, and the heat absorption efficiency (cold storage, ice making efficiency) by the Peltier element can be increased. , The low cooling capacity of the Peltier element was compensated, and it became possible to perform long-term cooling. Therefore, the required amount of the expensive Peltier element can be reduced, and the entire device can be further downsized (corresponding to claim 2). In addition, if the cold storage means is water or ice, the above effect (corresponding to claim 1) is further provided (corresponding to claim 3).

Further, by providing an opening / closing door of a heat-insulating cooling chamber that separates the outside air from the cooling chamber that closes during cold storage and opens only during cooling, the Peltier element does not escape cold air during warm storage and does not touch the warmth of the outside world. The heat absorption efficiency (cold storage, ice making efficiency) can be increased, and the low cooling capacity of the Peltier device is compensated for, which enables cooling for a long time. Therefore, the required amount of expensive Peltier device can be reduced and the entire device can be downsized. Further, by controlling the opening / closing of the opening / closing door, fluctuations can be given to the cold air, and a feeling of coolness can be maintained (corresponding to claim 4).

Further, by providing the blowing means (cold air fan 8) for discharging the cooled outside air to the outside in the cooling chamber, the leakage of the cold air is reduced when the cool air is blown, the directivity is enhanced, and the apparatus is more compact. As a result, the risk of breakage of the blower when the device is moved is reduced (corresponding to claim 8).

If heat absorption (and heat transfer means, eg (heat transfer fin portion 5a)) is inserted into the cold storage material (for example, ice 3), it is in direct contact with the cold storage material. The heat transfer property (heat absorption property) between them is good, and cold air can be obtained quickly after the start of blowing cold air (corresponding to claim 5).

The first heat absorbing member (for example, the cooling member 2)
And the second heat absorbing member (for example, the heat absorbing fins 5), the regenerator 3
It is possible to reduce the number of parts and downsize the device by forming a cool storage tank that accommodates (corresponding to claim 6).

When there is a volume change due to the temperature of the cold storage material (for example, when ice (water) is used), the cold storage fin or the outer wall of the cold storage reservoir is defined and the fins for cold air contacting the outside air and the heat storage material are vented. By providing the above, it is possible to prevent destruction of the cooling chamber or the like due to volume expansion (volume change due to temperature change of the regenerator material) accompanying transformation of water into ice during regenerator storage. In addition, especially when such a vent hole is provided, by providing an opening / closing door for storing the entire cooling side device in the container, it is useless to remove the outside air if the opening / closing door is closed during cold storage (during ice making). It does not absorb heat (corresponding to claim 7).

Moreover, by integrally or coupling the cooling member 2 and the heat absorbing fins 5, the heat transfer efficiency can be improved and the heat absorption can be accelerated. Further, since the device of the present invention does not have a large-sized device such as a compression rotator, it can be made extremely small and has no noise part, so that it is very suitable for a local cooling device such as a bed, a desk or a toilet. . Further, it is also suitable as a device for performing daytime cooling by performing cold storage using inexpensive nighttime electric power.

In each of the present inventions, the cold storage material is replaced by a heat storage material, and, for example, SiC or S having a large specific heat and high thermal conductivity is used.
By using ceramics such as i ₃ N ₄ and reversing the energization direction to the Peltier element, a heating device is obtained.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a regenerator type cold air device including a Peltier device according to a first embodiment of the present invention.

FIG. 2 relates to a second embodiment of the present invention and adopts a structure of a heat absorbing fin 5 without a heat transfer fin portion (5a in FIG. 1),
It is a sectional view of a regenerator type cold air device provided with a Peltier element.

FIG. 3 is a cross-sectional view of a regenerator-type cold air device including a Peltier element having an opening / closing door of a cooling chamber that opens / closes according to an operating state of the device according to a third embodiment of the present invention.

FIG. 4 relates to a fourth embodiment of the present invention, and a regenerator type cold air device provided with a Peltier element having a control device for operating or opening / closing a blower fan and a valve provided in a cooling fluid passage. FIG.

FIG. 5 is a partially cutaway front view of a regenerator with a Peltier element of a conventional example.

[Explanation of symbols]

 1 Peltier Unit 2 Cooling Member (First Heat Absorbing Member) 3 Ice (Water), (Cool Storage Tank) 4 Air Tank 5 Heat Absorbing Fin (Second Heat Absorbing Member) 5a Heat Transfer Fin 5a Cold Air Fin 6 Heat Dissipation Fin 7 Cooling Container 8 Cold Air Fan (Blower) 9 Radiating Fan 10 Vent Hole 11 Opening / Closing Door 12 Cooling Chamber 13 Discharge Valve 14 Suction Valve 15 Outlet 16 Duct 17 Blower Fan 18 Control Device

Claims (8)

[Claims] 1. A regenerator-type cool air device having a Peltier element, wherein water or ice is included as a regenerator in a cooling container having a Peltier element. 2. A cooling container, a Peltier element attached to the cooling container, a first heat absorbing member provided to absorb heat by the Peltier element, and heat absorbed by the first heat absorbing member. And a second heat absorbing member which is provided so as to be absorbed by the cool storing unit and to absorb heat from the outside air, and the first heat absorbing member, the cool storage member, and the second heat absorbing member. All of which are housed in the cooling container, a regenerator-type cold air device having a Peltier element. 3. A regenerator-type cold air device having a Peltier element according to claim 2, wherein the regenerator is water or ice. 4. The opening / closing means for closing the cold air outlet provided in the cooling container at the time of cold storage, and for opening or closing the cold air at the time of blowing cold air is provided. A regenerator-type cold-air device equipped with the Peltier device according to 1. 5. The second heat absorbing member is provided with a large number of rod-shaped bodies and / or sheet-shaped bodies which come into direct contact with the cold storage means, according to any one of claims 2 to 4. Regenerator type cool air device equipped with Peltier element. 6. The cold storage tank for storing the cold storage means, wherein the first and second heat absorbing members define a cold storage tank.
A regenerator type cold air device comprising the Peltier device according to any one of items 1 to 5. 7. The regenerator-type cool air device with a Peltier element according to claim 2, wherein the regenerator has a vent hole between at least one regenerator and the outside air. . 8. The Peltier element according to claim 2, wherein a blowing means for blowing out the outside air absorbed by the second heat absorbing member is provided in the cooling container. A cool storage type cold air device.