KR20220077408A - Portable small hot and cold fan - Google Patents

Abstract

Disclosed is a portable small-sized cold/hot air blower. In accordance with an embodiment of the present invention, a portable small-sized cold/hot air blower includes: a housing; a partition mounted on the inner surface of the housing; a cold/hot conversion element configured by joining two different types of metal, inserted into the partition, and partitioning the inner space of the housing based on the partition when inserted; a first heat dissipation unit mounted on one surface of the partition and in contact with one surface of the cold/hot conversion element; a second heat dissipation unit mounted on the other surface of the partition and in contact with the other surface of the cold/hot conversion element; and a first fan disposed inside the housing and disposed in front of the first heat dissipation unit. and a control unit that supplies power to the fan according to a user's selection and controls the polarity of the current supplied to the cold/hot conversion element. According to this embodiment, it is provided in a small size so that the user can carry it, and by changing the polarity of the current applied to the cold/hot conversion element, cold air is supplied to the user in summer according to the user's selection, and warm air is supplied to the user in winter according to the user's selection. A cooling fan is provided.

Description

Portable small cooling fan {PORTABLE SMALL HOT AND COLD FAN}

The present invention relates to a portable small cooling fan, and more particularly, to a portable small cooling fan that can selectively supply cold and hot air according to a user's selection by changing the polarity of a current applied to a cold/hot conversion element. is about

In general, a fan is mainly used when the temperature is lowered by blowing in the hot summer or when the influence of the wind is necessary. Conventionally, a home fan was used at home or in an office space, but recently, a portable fan or a small fan has been developed so that a user can use the fan while moving or boarding public transportation.

A small fan is usually used at a distance where it can come into direct contact with the face or skin when putting on makeup or working at a desk when the temperature is high.

In the case of a portable fan, it is charged using a USB terminal or power is supplied using a battery, and a handle that a user can hold is formed, or it is formed so that it can be hung around the user's neck.

However, in general, since a portable fan has only a blowing function, the cool wind in the hot summer is not supplied to the user, but the hot air is supplied as it is, feeling cool by being hit by the wind, and there is no direct cooling effect.

In addition, there is no means to replace the portable fan in winter.

Therefore, there is a need to develop a portable small cooling fan that can be carried by a user or provided in a small size while supplying cold air to the user in summer and warm air to the user in winter.

Republic of Korea Patent No. 10-1899501 (registered on September 11, 2018) “Small fan with USB connector” Republic of Korea Patent Publication No. 10-2020-0122968 (registered on Oct. 28, 2020) “Portable air purifier for cooling and heating” Republic of Korea Patent Publication No. 10-1994-0010585 (published on May 23, 1994) “Portable cold and hot air fan”

A portable small cold/hot air blower according to an embodiment of the present invention is provided in a small size so that a user can carry it, and supplies cold air to the user in summer and warm air to the user in winter. The purpose.

In addition, the portable small-sized hot and cold air blower according to an embodiment of the present invention is a portable small-sized hot and cold blower capable of selectively supplying cold and hot air according to a user's selection by changing the polarity of the current applied to the cold/hot conversion element. intended to provide

The problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

In accordance with an embodiment of the present invention, a portable small-sized cold/hot air blower includes: a housing; a partition mounted on the inner surface of the housing; a cold/hot conversion element configured by joining two different types of metal, inserted into the partition, and partitioning the inner space of the housing based on the partition when inserted; a first heat dissipation unit mounted on one surface of the partition and in contact with one surface of the cold/hot conversion element; a second heat dissipation unit mounted on the other surface of the partition and in contact with the other surface of the cold/hot conversion element; and a first fan disposed inside the housing and disposed in front of the first heat dissipation unit. and a control unit that supplies power to the fan according to a user's selection and controls the polarity of the current supplied to the cold/hot conversion element.

In addition, a through portion is formed in the center of the partition, and the cold/hot conversion element may be inserted into the through portion.

In addition, the partition is provided in the shape of a disk, and a plurality of projections are spaced apart along the edge on one side, and the projections are disposed so that some of the projections are outside the edge of the partition, and the plurality of projections are disposed on an inner surface of the housing. A groove portion corresponding to the protrusion may be formed.

In addition, the second heat dissipation unit may include a second heat dissipation plate and a plurality of second heat dissipation fins formed on a rear surface of the second heat dissipation plate, and the housing may have a plurality of inlet holes formed in a region corresponding to the second heat dissipation fin. .

In addition, the first heat sink may be provided in a smaller size than the second heat sink.

In addition, the second fan disposed inside the housing and disposed behind the second heat dissipation unit; may further include.

According to the embodiments of the present invention, there are at least the following effects.

The portable small cold/hot air blower according to an embodiment of the present invention is provided in a small size so that the user can carry it, and supplies cold air to the user in summer and warm air to the user in winter. A portable, small-sized cooling fan is provided.

In addition, by changing the polarity of the current applied to the cold/hot conversion element, it is possible to selectively supply cold air and hot air according to a user's selection.

In addition, the inside of the housing is partitioned by a partition, and regions where heat and heat are absorbed are blocked from each other, so that the thermal efficiency is excellent.

In addition, on one side of the partition provided in the shape of a disk, a plurality of protrusions are spaced apart along the edge, some of the protrusions are disposed so as to deviate from the edge of the partition, and a groove corresponding to the protrusion is formed inside the housing, so a relatively simple structure The two spaces are clearly demarcated from each other.

In addition, the cold/hot conversion element is disposed in the through-portion formed in the center of the partition to partition the inside of the housing, thereby making it possible to manufacture more compactly.

In addition, an inlet hole is formed in an area of the housing corresponding to the second heat dissipation fin of the second heat dissipation unit, so that heat dissipation efficiency is excellent.

In addition, the heat dissipation efficiency is excellent by the forced convection by the second fan.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a perspective view of a portable small cooling fan according to an embodiment of the present invention;
2 is another embodiment of a portable small cooling fan according to an embodiment of the present invention;
3 is an exploded perspective view of a portable small cold/hot air blower according to an embodiment of the present invention;
4 is an internal structural diagram of a portable small cold/hot air blower according to an embodiment of the present invention;
5 and 6 are diagrams illustrating a relationship between a housing of a portable small-sized cooling/heating fan and a second heat dissipation unit according to an embodiment of the present invention.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and a method of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Before the description, the terms described in the detailed description will be described. In the following embodiments, terms such as first, second, etc. are used for the purpose of distinguishing one component from another, not in a limiting sense. Accordingly, it goes without saying that the first component mentioned below may be the second component within the spirit of the present invention. Also, the singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as 'comprise' or 'have' mean that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and one or more other features or components It does not preclude the possibility of adding

In addition, in the drawings, the size of the components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings. In the description with reference to the accompanying drawings, the same or corresponding components are given the same reference numerals, and overlapping description thereof will be omitted.

The portable small cooling fan 1000 according to an embodiment of the present invention is provided in a small size so that the user can carry it, and by changing the polarity of the current applied to the cooling/heating conversion element 300 according to the user's selection. It relates to a cold and hot air blower that supplies cold air to a user in summer and warm air to a user in winter.

A portable small cooling fan 1000 according to an embodiment of the present invention includes a housing 100 , a partition 200 , a cooling/heating conversion element 300 , a first heat dissipation unit 400 , and a first It includes a second heat dissipation unit 500 , a first fan 600 , a second fan 700 , and a control unit.

The housing 100 is a configuration that becomes the overall frame of the portable small cooling fan 1000 according to the present embodiment, and includes a partition 200, a cooling/heating conversion element 300, a first heat dissipation unit 400, and The second heat dissipation unit 500 , the first fan 600 , the second fan 700 , and a control unit (not shown) are mounted.

In this embodiment, the housing 100 is provided in a substantially hollow cylindrical shape. Although it is assumed that the present embodiment is provided as a tabletop type, it may also be provided as a portable fan (see FIG. 2). That is, it may be used as a portable fan by reducing the length of the housing 100 and mounting a handle on one side thereof. In this embodiment, the table-top type is described as an example, but it is not excluded that it is used as a portable fan, and the shape should not be limited to the illustration of the drawings.

The partition 200 is installed inside the housing 100 to partition the inner space of the housing 100 . The internal space is partitioned by the partition 200 , and a region for supplying cold and hot air is partitioned, so that the thermal efficiency of the cold/hot air supplied by the cold/warm conversion device 300 is excellent.

The partition 200 may have a simple and accurate bidirectional sealing structure.

As a closed structure, the partition 200 is provided in the shape of a disk in which the penetrating portion 210 is formed in the central portion. The partition 200 may be made of plastic or metal. A through portion 210 is formed in the central portion of the partition 200 , and the cold/hot conversion element 300 is inserted into the through portion 210 . The internal space of the housing 100 is partitioned based on the partition 200 by inserting the cold/hot conversion element 300 into the through part 210 . The diameter of the partition 200 is provided to correspond to the inner diameter of the housing 100 . At this time, even when the diameter of the partition 200 corresponds to the inner diameter of the housing 100 , they may not be completely sealed to each other due to tolerance, and there may be a problem in that it is difficult to fix the partition 200 inside the housing 100 .

Accordingly, in the present embodiment, a plurality of protrusions 220 are disposed on one side of the partition 200 to be spaced apart from each other at regular intervals along the edge of the partition 200 . In this case, each of the protrusions 220 is disposed so that a part thereof is outside the edge of the partition 200 .

Meanwhile, a groove portion 110 corresponding to the protrusion 220 of the partition 200 is formed in one region of the inner surface of the housing 100 . The grooves 110 are formed in a number corresponding to the protrusions 220 , and have the same spacing as the spacing between the protrusions 220 .

As the protrusion 220 of the partition 200 is inserted into the groove 110 of the housing 100 , the partition 200 is firmly fixed, and the flow of air is more reliably blocked.

The cold/hot conversion element 300 is configured such that the polarity is changed by the user's selection so that cold or hot air is supplied to the user.

The cold/hot conversion element 300 is configured by bonding two different metals having the same shape to each other. When a DC current is applied to two different metals, heat is absorbed on one side and heat is generated on the other side. Specifically, when two different metals are bonded, if a DC power is applied to both ends of the two metals, the energy necessary for electrons to move through the metal with a potential difference is obtained from the metal. The Seebeck or Peltier principle is used, which emits/absorbs heat according to the flow of electrons when current flows in one direction and the flow of electrons when current flows in the other direction. When current flows, heat is generated or absorbed at the junction in proportion to the current, and when the direction of the current is changed, heat is generated and absorbed in the opposite way, and heat absorption and heat generation are selectively performed. That is, according to the polarity of the supplied power, one side is converted into a heat absorbing part/heat absorbing part, and the other side is converted into a heat absorbing part/heating part. In this embodiment, the cold/hot conversion device 300 may be a TEC device. Hot air/cold air is selectively supplied to the user through heat/endothermic conversion of the cold/warm conversion element 300 .

The first heat dissipation unit 400 and the second heat dissipation unit 500 are configured for heat dissipation of the cooling/heat conversion element 300 that selectively heats up / absorbs heat. The first heat dissipation unit 400 is mounted on one surface of the partition 200 and may be bolted. The second heat dissipation unit 500 is mounted on the other surface of the partition 200 and may also be bolted to the partition 200 . The first heat dissipation unit 400 and the second heat dissipation unit 500 contact one surface and the other surface of the cold/warm conversion element 300 , respectively. The first heat dissipation unit 400 and the second heat dissipation unit 500 are made of a metal material.

The cold/hot conversion element 300 is inserted into the through portion 210 formed in the central portion of the partition 200 so that one surface and the other surface are in contact with each other, and the thickness of the partition 200 and the thickness of the cold and hot conversion element 300 are It is formed in the same way, and there is no step difference between one surface/other surface of the partition 200 and one surface/other surface of the cold/hot conversion element 300 . Through this, the first heat dissipation unit 400 and the second heat dissipation unit 500 are in close contact with the cold/warm conversion element 300, so that the heat dissipation efficiency is excellent.

In addition, the first heat dissipation unit 400 and the second heat dissipation unit 500 are provided to be larger than the size of the cold/hot conversion element 300 so that heat and cold air can be more easily transferred to the surroundings. That is, it can be more easily delivered to the user. At this time, since the important thing is the heat dissipation performance at the exhaust side, the size of the second heat dissipation unit 500 which is a heat dissipation unit disposed at the exhaust side may be formed to be relatively larger than that of the first heat dissipation unit 400 .

On the other hand, the first heat dissipation unit 400 and the second heat dissipation unit 500 are formed with a plurality of heat dissipation fins protruding from one side. The first heat dissipation fins 410 protrude forward, and the second heat dissipation fins 510 protrude rearward.

The first fan 600 is configured to forcibly transmit heat or cool air generated by the cold/hot conversion element 300 to the user. The first fan 600 is disposed inside the housing 100 and disposed in front of the first heat dissipation unit 400 . The first fan 600 may be driven by a DC motor, and the DC motor receives power from a power supply unit. The power supply may use a 3~5V wired supply or a storage battery.

Meanwhile, the first fan 600 may be completely accommodated in the housing 100 so that the end of the first fan 600 may be inside the front end of the housing 100 . At this time, a spiral protrusion 220 may be formed on the inner surface of the front end of the housing 100 to maximize the flow of air supplied to the user.

The control unit is configured to control On/Off control, changing the cold/hot air mode, and controlling the air volume. The housing 100 may include a touch sensor. Touch information is transmitted to the user's touch sensor to the control unit, and the control unit can control On/Off control and change of cold/hot air mode from the touch information. For example, when the user touches once, it can be recognized as an On/Off command to determine whether to supply power to the power unit, and the cold/hot air mode can be changed by changing the polarity of the current according to the touch time (for example, touch for more than 3 seconds). can be changed

Meanwhile, a second fan 700 may be optionally further installed. The second fan 700 is configured to improve the effect of the second heat dissipation unit 500 . When only the first fan 600 is installed, natural heat dissipation is performed by the second heat dissipation unit 500 . However, since heat dissipation of the thermoelectric element is important, a second fan 700 may be further installed to improve the heat dissipation effect of the second heat dissipation unit 500 . The second fan 700 is disposed inside the housing 100 and disposed behind the second heat dissipation unit 500 .

At this time, a plurality of inlet holes are formed in a region corresponding to the second heat dissipation fin 510 of the housing 100 . The second fan 700 is driven by being supplied with power by the power supply unit, and is forced to flow air during rotation to cool the cold/hot conversion element 300 . The second heat dissipation fin 510 is disposed at the point where the inlet hole is formed, so that when the second fan 700 rotates, air is sucked and discharged through the inlet hole, the suction power of the second fan 700 is improved, and the heat dissipation efficiency is excellent.

The second fan 700 may be selectively driven by the controller. When used in an office space, there is no person in the rear (ie, exhaust direction) of the portable small cooling fan 1000, so it can be used freely. can be supplied. Accordingly, it is possible to selectively control the operation of the second fan 700 , which may be controlled by the control unit by transmitting the user's selection information to the control unit.

From now on, the operation of the portable small cooling fan 1000 according to an embodiment of the present invention will be described.

cold wind mode

When the user briefly touches the housing 100 once and touch information is transmitted to the control unit, the control unit supplies power to the DC motor and the cold/warm conversion device 300 through the power supply unit. One surface (front) of the cold/hot conversion element 300 is cooled, and the other surface (rear) is heated. The first fan 600 is driven to supply cool air from the front of the cold/hot conversion element 300 to the user. At this time, the inner space of the housing 100 is partitioned by the partition 200 and the cold/hot conversion element 300 , and the cold air is supplied only to the user without moving backward, so that the cold air supply efficiency is excellent.

In addition, when the user operates the second fan 700 , air is forcibly introduced through the inlet hole and exhausted to the rear, and the introduced air is exhausted through the second heat dissipation fin 510 , so that the exhaust efficiency is excellent.

warm air mode

When the user touches the housing 100 for more than 3 seconds, touch information is transmitted to the control unit, and the control unit changes the polarity of the current supplied to the cold/warm conversion element 300 . The front surface of the cold/hot conversion element 300 is heated by the change in current polarity, and the other surface is cooled. Accordingly, the first fan 600 is driven so that the heat of the front of the cold/hot conversion station is supplied to the user. At this time, the inner space of the housing 100 is partitioned by the partition 200 and the cold/hot conversion element 300 , and heat is supplied only to the user without moving backward, so that the hot air supply efficiency is excellent.

When the user briefly touches the housing 100 once and touch information is transmitted to the control unit, the control unit cuts off the power supply to the DC motor and the cold/warm conversion element 300 through the power supply unit.

Therefore, according to the present invention, it is provided in a small size so that the user can carry it, and by changing the polarity of the current applied to the cold/hot conversion element, cold air is supplied to the user in summer according to the user's selection, and warm air is supplied to the user in winter. A cooling fan is provided for supplying

The use of all examples or exemplary terminology (eg, etc.) in the present invention is merely for the purpose of describing the present invention in detail, and the scope of the present invention is not limited by the examples or exemplary terms unless limited by the claims. It is not limited. In addition, those skilled in the art can appreciate that various modifications, combinations and changes can be made according to design conditions and factors within the scope of the appended claims or equivalents thereof.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and not only the claims described below, but also all ranges equivalent to or changed from these claims are of the spirit of the present invention. would be said to belong to the category.

1000: portable small cooling fan
100: housing 110: groove
200: partition 210: penetrating part
220: projection 300: cold / hot conversion element
400: first heat dissipation unit 410: first heat dissipation bin
500: second heat dissipation unit 510: second heat dissipation fin
600: first fan 700: second fan

Claims (6)

housing;
a partition mounted on the inner surface of the housing;
a cold/hot conversion element configured by joining two different types of metal, inserted into the partition, and partitioning the inner space of the housing based on the partition when inserted;
a first heat dissipation unit mounted on one surface of the partition and in contact with one surface of the cold/hot conversion element;
a second heat dissipation unit mounted on the other surface of the partition and in contact with the other surface of the cold/hot conversion element; and
a first fan disposed inside the housing and disposed in front of the first heat dissipation unit;
a control unit supplying power to the fan according to a user's selection and controlling a polarity of a current supplied to the cold/hot conversion element;
A portable small cooling fan comprising a.
According to claim 1,
A penetrating portion is formed in the center of the partition, and the cold/hot conversion element is inserted into the through portion.
3. The method of claim 2,
The partition is provided in the shape of a disk, and a plurality of protrusions on one side are spaced apart along the edge,
the protrusion is arranged such that a portion thereof extends beyond the edge of the partition;
A portable small cooling fan having grooves corresponding to the plurality of protrusions formed in one region of the inner surface of the housing.
3. The method of claim 2,
The second heat dissipation unit includes a second heat dissipation plate and a plurality of second heat dissipation fins formed on a rear surface of the second heat dissipation plate,
The housing is a portable small-sized cooling fan having a plurality of inlet holes formed in an area corresponding to the second heat dissipation fin.
5. The method of claim 3 or 4,
The first heat sink is provided with a smaller size than the second heat sink.
6. The method of claim 5,
and a second fan disposed inside the housing and disposed behind the second heat dissipation unit.

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