JP2014092338A - Cool air fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem in which a conventional cool air fan can hardly give a refreshing sense because humidity of the air blown from an outlet port is too high.SOLUTION: A cool air fan 1 comprises: a casing 2 including an inlet port 21, a first outlet port 22, and a second outlet port 23; a blower fan 3 arranged in the casing 2; a first flow passage 5 that connects the inlet port 21 to the first outlet port 22 and guides an air flow generated by the blower fan 3 to the first outlet port 22; a second flow passage 6 that connects the inlet port 21 to the second outlet port 23 and guides an air flow generated by the blower fan 3 to the second outlet port 23; and a vaporization unit 7 (vaporization means) that is arranged in the second flow passage 6 and cools air flowing in the second flow passage 6 by the heat of vaporization of water. In addition, the cool air fan 1 is provided with a sensible heat exchanger 8 (heat exchanger) that exchanges heat between an air flow cooled by the vaporization unit 7 in the second flow passage 6 and an air flow flowing in the first flow passage 5.

Description

  The present invention relates to a cold air fan that obtains cold air using heat of vaporization of water.

  As a conventional cold air fan, there is one provided with a casing having a suction port and an air outlet, a fan, and a vaporization filter. The intake air sucked from the suction port is cooled and humidified by the heat of vaporization of water when passing through the vaporization filter. As a result, air having a temperature lower than that of the intake air is blown out from the outlet.

JP-A-61-66027

  However, since the blown air blown out from the cold air fan has a temperature lower than that of the intake air but has a high humidity, the humidity of the blown air becomes too high, for example, in a high temperature / humid summer season. There is a problem that it is difficult to obtain.

  Then, the objective of this invention is providing the cold wind fan which can blow out the air which was low-temperature rather than the air suck | inhaled from a suction inlet, and suppressed the raise of humidity.

  A cold air fan according to a first aspect of the present invention includes a casing having an inlet, a first outlet, and a second outlet, an air blower disposed in the casing, the inlet and the first outlet. The first flow path that leads the air flow generated by the air blowing means to the first air outlet, the suction port and the second air outlet are communicated, and the air flow generated by the air blowing means is A second flow path leading to the two outlets, and vaporization means disposed in the second flow path for cooling the air flowing through the second flow path by heat of vaporization of water, the vaporization of the second flow path A heat exchanger for exchanging heat between the air flow cooled by the means and the air flow flowing through the first flow path is provided.

  In this cold air fan, there is provided a heat exchanger that exchanges heat between the air flow that flows through the second flow path and is cooled by the vaporization means and the air flow that flows through the first flow path. The air flow flowing through the path flows through the second flow path, is heat-exchanged with the air flow cooled and humidified by the heat of vaporization of water, and is blown out from the first air outlet. Therefore, an air flow having a lower temperature than the air sucked from the suction port and a lower humidity than the air flow cooled by the vaporizing means can be obtained from the first air outlet. Therefore, it is possible to blow out air having a temperature lower than that of air sucked from the suction port and suppressing an increase in humidity.

  In the cold air fan concerning 2nd invention, the said 1st blower outlet is provided in the front surface of the said casing in the cold air fan concerning 1st invention, It is characterized by the above-mentioned.

  In this cold air fan, since the 1st blower outlet is provided in the front surface of the casing, it can blow out to the user side the air which was low-temperature rather than the air suck | inhaled from a suction inlet, and suppressed the raise of humidity.

  A cold air fan according to a third invention is characterized in that, in the cold air fan according to the first or second invention, the first air outlet and the suction port are provided on the same surface of the casing.

  In this cold air fan, since the first air outlet and the air inlet are provided on the same surface of the casing, when the user is located immediately in front of the first air outlet, the air blown out from the first air outlet is Immediately after hitting the user, it is sucked from the suction port, and the operation of blowing out from the first air outlet is repeated. As a result, the cooling of the air proceeds, and cooler air can be blown out from the first outlet.

  In the cold air fan concerning 4th invention, the said 2nd blower outlet is provided in the back surface of the said casing in the cold air fan concerning any one of the 1st-3rd invention, It is characterized by the above-mentioned.

  In this cold air fan, since the 2nd blower outlet is provided in the back surface of the casing, the humid air which passed the vaporization filter and the heat exchanger can be blown off to the opposite side to a user.

  In the cold air fan according to the fifth invention, in the cold air fan according to any one of the first to fourth inventions, the distribution amount of the air flow flowing through the first flow path and the air flow flowing through the second flow path is set. Distributing amount adjusting means for adjusting is provided.

  In this cold air fan, since the distribution amount of the air flow flowing through the first flow path and the air flow flowing through the second flow path can be adjusted, the temperature and humidity of the air blown from the first blowout port, or the first blowout port The amount of air blown from the air can be adjusted to a condition that allows the user to feel more refreshed.

  A cold air fan according to a sixth invention is characterized in that in the cold air fan according to any one of the first to fifth inventions, a duct for exhausting air blown out from the second air outlet is provided. To do.

  In this cold air fan, since the duct for exhausting the air blown out from the second air outlet is provided, the high-humidity air that has passed through the vaporization filter and the heat exchanger can be exhausted.

  As described above, according to the present invention, the following effects can be obtained.

  In the first invention, a heat exchanger is provided that exchanges heat between the air flow that flows through the second flow path and is cooled by the vaporization means, and the air flow that flows through the first flow path. The air flow flowing through the flow path flows through the second flow path, is heat-exchanged with the air flow cooled and humidified by the heat of vaporization of water, and blown out from the first air outlet. Therefore, an air flow having a lower temperature than the air sucked from the suction port and a lower humidity than the air flow cooled by the vaporizing means can be obtained from the first air outlet. Therefore, it is possible to blow out air having a temperature lower than that of air sucked from the suction port and suppressing an increase in humidity.

  In 2nd invention, since the 1st blower outlet is provided in the front surface of the casing, it can blow out to the user side the air which was low-temperature rather than the air suck | inhaled from a suction inlet, and suppressed the raise of humidity.

  In 3rd invention, since the 1st blower outlet and the suction inlet are provided in the same surface of a casing, when a user exists in front of a 1st blower outlet, the air which blown off from the 1st blower outlet As soon as it hits the user, it is sucked in from the suction port and blown out from the first air outlet. As a result, the cooling of the air proceeds, and cooler air can be blown out from the first outlet.

  In 4th invention, since the 2nd blower outlet is provided in the back surface of the casing, the humid air which passed the vaporization filter and the heat exchanger can be blown off to the opposite side to a user.

  In the fifth aspect of the invention, since the distribution amount of the air flow flowing through the first flow path and the air flow flowing through the second flow path can be adjusted, the temperature and humidity of the air blown from the first blowout port, or the first flow The air volume of the air blown out from the outlet can be adjusted to a condition that allows the user to feel more refreshing.

  In 6th invention, since the duct for exhausting the air which blows off from a 2nd blower outlet is provided, the humid air which passed the vaporization filter and the heat exchanger can be exhausted.

It is a perspective view of the cold air fan which concerns on 1st Embodiment of this invention, (a) is the figure seen from the front, (b) is the figure seen from back. It is a partially cutaway perspective sectional view of the cold air fan shown in FIG. It is the schematic which shows the flow of the air of the cold wind fan shown in FIG. It is the perspective view which looked at the cold air fan which concerns on 2nd Embodiment of this invention from the front. It is the schematic which shows the flow of the air of the cold wind fan which concerns on 3rd Embodiment of this invention. It is the perspective view which looked at the cold wind fan which concerns on 4th Embodiment of this invention from back.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  The cold air fan described below is usually used indoors. In general, the indoor window and the entrance are opened, and the second air outlet from which high-humidity air is blown out faces the window and the entrance.

[First Embodiment]
[Configuration of the cold air fan 1]
As shown in FIGS. 1 to 3, the cold air fan 1 according to the first embodiment of the present invention includes a casing 2, a blower fan 3 (blower unit), an air filter 4, a first flow path 5, and a second flow path 6. , A vaporization unit 7 (vaporization means), and a sensible heat exchanger 8 (heat exchanger). The blower fan 3, the air purification filter 4, the first flow path 5, the second flow path 6, the vaporization unit 7, and the sensible heat exchanger 8 are accommodated in the casing 2.

<Case 2>
As shown in FIG. 1, the casing 2 includes a circular air blowing part 11, a support part 12 that supports the air blowing part 11, and a base part 13. A suction port 21 for sucking air is formed in the left side surface 12 </ b> L of the support portion 12. Further, the casing 2 is formed with a first air outlet 22 and a second air outlet 23 for blowing out air sucked from the air inlet 21. The first air outlet 22 is formed on the front surface 2F of the casing 2 (more specifically, the front surface 11F of the air blowing unit 11), and the second air outlet 23 is the rear surface 2B of the casing 2 (more specifically, the rear surface 11B of the air blowing unit 11). Is formed. The front surface 2F of the casing 2 refers to the front surface 11F of the blower unit 11 and the front surface 12F of the support unit 12. Further, the back surface 2B of the casing 2 refers to the back surface 11B of the blower unit 11 and the back surface 12B of the support unit 12.

  Here, the user who normally uses the cold air fan 1 exists on the front surface 2F side. Therefore, in the present application, the front surface 2F is referred to as a user side, and the back surface 2B is referred to as a side opposite to the user.

<Blower fan 3>
A blower fan 3 (blower unit) is disposed between the suction port 21 and the air filter 4. A fan motor (not shown) is connected to the blower fan 3, and the blower fan 3 rotates when the fan motor is driven under the control of a control device (not shown).

<Air cleaning filter 4>
An air purification filter 4 for purifying air is disposed on the downstream side of the blower fan 3. The air sucked from the suction port 21 by the blower fan 3 first passes through the air purification filter 4. At that time, dust in the air is removed. Here, the air purification filter 4 is a HEPA (High Efficiency Particulate Air Filter) filter, and can remove fine dust.

<First channel 5 and second channel 6>
A first flow path 5 and a second flow path 6 are formed on the downstream side of the air purification filter 4. The first flow path 5 is a flow path that leads the air flow generated by the blower fan 3 to the first blower outlet 22 through communication between the suction port 21 and the first blower outlet 22. The second flow path 6 is a flow path that leads the air flow generated by the blower fan 3 to the second blower outlet 23 through communication between the suction port 21 and the second blower outlet 23. The first flow path 5 and the second flow path 6 are separated by a partition plate or the like disposed in the casing 2, and the air flow guided to the first flow path 5 and the second flow path 6 are guided. The airflows are not mixed with each other until they are blown out from the respective outlets 22 and 23.

<Vaporization unit 7>
In the second flow path 6, a vaporization unit 7 (vaporization means) that cools the air by the heat of vaporization of water is disposed. As shown in FIG. 3, the vaporization unit 7 includes a vaporization rotor 31, a water storage tank 32, and a water tray 33.

  The vaporization rotor 31 includes a vaporization filter 34 that supplies water to the air flow guided to the second flow path 6, and a watering device 35 that applies water to the vaporization filter 34 and maintains the submerged state of the vaporization filter 34. The vaporization filter 34 is formed, for example, in a disk shape from a non-woven fabric, and is attached to the inner peripheral side of the watering device 35.

  The water hose device 35 has a plurality of water hanger parts (not shown). This water hanger part is formed in a concave shape so that water can be stored inside, and by the rotation of the vaporizing rotor 31, each water hanger part rises after being sequentially submerged in the water tray 33 and is also submerged. Repeat the above operations. When the water hose part is submerged, water flows into the water hanger part, and when the water hanger part rises, the water accumulated in the water hanger part flows toward the vaporization filter 34. Thereby, water is supplied to the vaporization filter 34, and the submerged state of the vaporization filter 34 is maintained.

  As shown in FIG. 1, the water storage tank 32 is provided on the front surface 11 </ b> F of the air blowing unit 11 of the casing 2. The water storage tank 32 is detachable from the cold air fan 1, and the user can inject water into the water storage tank 32. A water inlet (not shown) is provided in the lower part of the water storage tank 32, and the water in the water tank 32 flows out into the water tray 33 through the water inlet due to a decrease in the water level in the water tray 33.

  The water tray 33 is for supplying water to the vaporizing rotor 31, and stores water. In FIG. 2, the water tray 33 is omitted.

<Sensible heat exchanger 8>
A sensible heat exchanger that exchanges sensible heat between the air flow that flows through the second flow path 6 and passes through the vaporization filter 34 and the air flow that flows through the first flow path 5 on the downstream side of the vaporization filter 34. 8 is arranged. The sensible heat exchanger 8 has a plurality of tubes 41. An air flow that has passed through the vaporization filter 34 (air flow that flows through the second flow path 6) passes through the tube 41, and an air flow that flows through the first flow path 5 passes around the tube 41. The plurality of tubes 41 are arranged radially from the center of the sensible heat exchanger 8.

[the flow of air]
Next, the flow of air in the cold air fan 1 will be described with reference to FIGS. 2 and 3. 2 and 3, the air flow sucked from the suction port 21, flows through the first flow path 5 and is blown out from the first blowout port 22 is indicated by a solid line arrow, and flows through the second flow path 6 side. The air flow blown out from the second outlet 23 is indicated by a dotted arrow.

  The air sucked from the suction port 21 by the blower fan 3 first passes through the air purification filter 4. At that time, dust in the air is removed from the air by the air filter 4.

  The air flow that has passed through the air purification filter 4 is divided into air that is guided to the first flow path 5 and air that is guided to the second flow path 6. The distribution amount of the air guided to the first flow path 5 and the air guided to the second flow path 6 is 1: 1.

  The airflow flowing through the second flow path 6 first passes through the vaporization filter 34 of the vaporization unit 7. At that time, the air flow flowing through the second flow path 6 is cooled and humidified by the heat of vaporization of water. The air flow that has passed through the vaporization filter 34 passes through the tube 41 of the sensible heat exchanger 8 and exchanges sensible heat with the air flow flowing through the first flow path 5. The air flow that has passed through the sensible heat exchanger 8 has a higher temperature and a slightly lower humidity than the air flow that has passed through the vaporization filter 34. Then, the air flow that has passed through the sensible heat exchanger 8 is blown out from the second outlet 23.

  On the other hand, the air flow flowing through the first flow path 5 passes around the tube 41 of the sensible heat exchanger 8 and exchanges sensible heat with the air flow flowing through the tube 41 (second flow path 6). Is called. The air flow that has passed through the sensible heat exchanger 8 is cooled by heat exchange with the air flow flowing through the second flow path 6, and the temperature decreases. Also, the humidity increases slightly. However, the amount of increase in humidity is sufficiently smaller than the amount of increase in humidity of the airflow that has passed through the vaporization filter 34.

[Example]
Next, an embodiment of the cold air fan 1 will be described with reference to FIG. The distribution amount of the air flow guided to the first flow path 5 and the air flow guided to the second flow path 6 was 1: 1, and the rotational speed of the blower fan 3 was 600 rpm.

  First, the temperature of the indoor air sucked from the suction port 21 was 27 ° C., and the humidity was 60%. Then, the temperature of the air flow after being guided to the second flow path 6 and passing through the vaporization filter 34 decreased to 25 ° C., and the humidity increased to 80%. Thereafter, the temperature of the air flow that has passed through the sensible heat exchanger 8 and exchanged heat with the air flow flowing through the first flow path 5 rises to 26 ° C., the humidity drops to 75%, and this high temperature and high humidity (temperature 26 ° C., humidity 75%) was blown out from the second outlet 23.

  On the other hand, of the indoor air sucked from the suction port 21, the temperature of the air flow that is guided to the first flow path 5, passes through the sensible heat exchanger 8, and exchanges heat with the air flow that flows through the second flow path 6. Decreased from 27 ° C. to 26 ° C., and the humidity increased slightly from 60% to 63%. As a result, air having a temperature lower than that of the room air sucked from the suction port 21 and having hardly increased humidity was blown out from the first air outlet 22.

  From the above, by performing heat exchange between the air flow that flows through the second flow path 6 and passes through the vaporization filter 34 and the air flow that flows through the first flow path 5, the air is sucked from the suction port 21. It can be seen that air having a low temperature and a suppressed increase in humidity can be obtained from the first air outlet 22.

[Characteristics of the cold air fan 1 of this embodiment]
The cold air fan 1 of the present embodiment has the following characteristics.

  In the cold air fan 1, the heat exchange is performed between the air flow that flows through the second flow path 6 and passes through the vaporization filter 34 of the vaporization unit 7 (vaporization means) and the air flow that flows through the first flow path 5. Since the heat exchanger 8 (heat exchanger) is provided, the air flow that flows through the first flow path 5 flows through the second flow path 6 and is cooled and humidified by the vaporization heat of water by the vaporization filter 34. The heat is exchanged with the flow and blown out from the first air outlet 22. Therefore, an air flow having a lower temperature than the air sucked from the suction port 21 and a lower humidity than the air flow that has passed through the vaporization filter 34 can be obtained from the first air outlet 22. Therefore, it is possible to blow out air having a temperature lower than that of air sucked from the suction port 21 and suppressing an increase in humidity.

  Moreover, in this cold air fan 1, since the 1st blower outlet 22 is provided in the front surface 2F of the casing 2, the air which is lower temperature than the air sucked in from the suction inlet 21, and suppressed the rise in humidity is a user side. Can be blown out.

  Moreover, in this cold air fan 1, since the 2nd blower outlet 23 is provided in the back surface 2B of the casing 2, the highly humid air which passed the vaporization filter 34 and the sensible heat exchanger 8 is blown off on the opposite side to a user. be able to.

[Second Embodiment]
Next, a cold air fan according to the second embodiment will be described. As shown in FIG. 4, the cold air fan according to the second embodiment is different from the first embodiment in that the suction port 21 is formed on the front surface 2F of the casing 2 (more specifically, the front surface 12F of the support portion 12). Different.

[Characteristics of the cold air fan of this embodiment]
The cold air fan of this embodiment has the following characteristics.

  In this cold air fan, since the first air outlet 22 and the inlet 21 are provided in the front surface 2F of the casing 2, when the user is located immediately in front of the first air outlet 22, the first air outlet 22 As soon as the blown air hits the user, the air is sucked from the suction port 21 and blown from the first blower port 22. As a result, the cooling of the air proceeds, and cooler air can be blown out from the first outlet 22.

[Third Embodiment]
Next, a cold air fan according to the third embodiment will be described. As shown in FIG. 5, the cold air fan according to the third embodiment includes distribution amount adjusting means 9 that adjusts the distribution amount of the air flow flowing through the first flow path 5 and the air flow flowing through the second flow path 6. This is different from the first embodiment. The distribution amount adjusting means 9 is disposed upstream of the sensible heat exchanger 8 in the first flow path 5.

  The distribution amount adjusting means 9 includes a fixed pin 51 that is fixed to the casing 2 and the like, and a blade 52 that is rotatably attached to the fixed pin 51. By adjusting the direction of the blades 52 with respect to the air flow, the distribution amount of the air flow flowing through the first flow path 5 and the air flow flowing through the second flow path 6 can be adjusted.

[Characteristics of the cold air fan of this embodiment]
The cold air fan of this embodiment has the following characteristics.

  In this cold air fan, since the distribution amount of the air flow flowing through the first flow path 5 and the air flow flowing through the second flow path 6 can be adjusted, for example, the first flow path 5 with respect to the air flow flowing through the second flow path 6 The ratio of the air flow flowing through the first flow path 22 is increased to increase the air volume from the first air outlet 22 or the ratio of the air flow flowing through the first flow path 5 to the air flow flowing through the second flow path 6 is decreased. The temperature of the air blown out from the first blower outlet 22 can be further reduced. Therefore, the temperature and humidity of the air blown from the first air outlet 22 or the air volume of the air blown from the first air outlet 22 can be adjusted to a condition that allows the user to feel more refreshed.

[Fourth Embodiment]
Next, a cold air fan according to the fourth embodiment will be described. As shown in FIG. 6, the cold air fan according to the fourth embodiment differs from the first embodiment in that the duct 10 is connected to the second air outlet 23.

[Characteristics of the cold air fan of this embodiment]
The cold air fan of this embodiment has the following characteristics.

  In this cold air fan, by disposing the end of the duct 10 outdoors, the high-humidity air that has passed through the vaporization filter 34 and the sensible heat exchanger 8 can be exhausted outdoors. As a result, when there is a user around the second outlet 23 from which high-humidity air is blown out, high-humidity air can be prevented from being blown toward the user.

  As mentioned above, although embodiment of this invention was described, it should be thought that the specific structure of this invention is not limited to the said embodiment. The scope of the present invention is shown not only by the description of the above-described embodiment but also by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

[Modification]
In each said embodiment, although the 1st blower outlet 22 is formed in the front surface 2F of the casing 2, and the 2nd blower outlet 23 is formed in the back surface 2B of the casing 2, each blower outlet 22,23 is the casing 2. It may be formed anywhere.

  Further, in the first embodiment, the suction port 21 is formed in the left side surface 12 </ b> L, but the suction port 21 may be formed anywhere in the casing 2.

  Moreover, in 2nd Embodiment, although the 1st blower outlet 22 and the suction inlet 21 are provided in the front surface 2F of the casing 2, if the 1st blower outlet 22 and the suction inlet 21 are provided in the same surface, The arrangement position is not limited to the front surface 2F.

  Moreover, in each said embodiment, although the air purification filter 4 is comprised with the HEPA filter, the air purification filter 4 may be a pre filter which removes comparatively big dust, and contains activated carbon etc. and formaldehyde and an odor. It may be a deodorizing filter that decomposes or adsorbs components, or may be a filter that purifies air. Moreover, the combination of these filters may be sufficient. The emptying filter 4 may not be provided.

  Moreover, although not provided in each said embodiment, you may provide the streamer discharge unit. The streamer discharge unit is an apparatus that supplies active species having high oxidative decomposition ability by streamer discharge. These active species include fast electrons, ions, hydroxyl radicals, and excited oxygen molecules, and these active species are in the air consisting of small organic molecules such as ammonia, aldehydes, nitrogen oxides, etc. Decomposes harmful and odorous components.

  Moreover, in each said embodiment, although the vaporization rotor 31 consists of the vaporization filter 34 and the watering apparatus 35, the structure of a vaporization rotor is not restricted above.

  Moreover, in each said embodiment, although the vaporization unit 7 which has the vaporization filter 34 is used as a vaporization means, a vaporization means is not restricted to this. For example, a water spraying type vaporizing means for spraying water with an ultrasonic vibrator or the like may be used.

  Moreover, in each said embodiment, although the sensible heat exchanger 8 which performs sensible heat exchange is used, a heat exchanger is not restricted to a sensible heat exchanger, A various heat exchanger can be used.

  Moreover, in the said 3rd Embodiment, although the distribution amount adjustment means 9 is provided in the 1st flow path 5, it is not specifically limited, The 2nd flow path 6 may be provided, and the 1st flow It may be provided upstream of the path 5 and the second flow path 6. In addition, the distribution amount adjusting means 9 is configured by the fixing pin 51 and the blade 52, but the configuration is not limited thereto.

  Moreover, in each said embodiment, it has the suction port 21 and the ventilation fan 3 in the upstream of the 1st flow path 5 and the 2nd flow path 6, respectively, The second channel 6 is separated. However, another fan may be provided in each of the first flow path 5 and the second flow path 6. Moreover, a suction inlet and a ventilation fan may be provided in each of the first flow path and the second flow path, and the first flow path 5 and the second flow path 6 may be completely separated from the suction opening to the blow outlet.

  By using the present invention, it is possible to blow out air having a temperature lower than that of air sucked from the suction port and suppressing an increase in humidity.

DESCRIPTION OF SYMBOLS 1 Cold air fan 2 Casing 2F Front surface 2B Rear surface 3 Blower fan (blower means)
4 Emptying filter 5 1st flow path 6 2nd flow path 7 Evaporation unit (vaporization means)
8 Sensible heat exchanger (heat exchanger)
9 Distribution amount adjusting means 10 Duct 21 Suction port 22 First outlet 23 Second outlet 34 Evaporation filter

Claims (6)

A casing having a suction port, a first air outlet, and a second air outlet;
Air blowing means disposed in the casing;
A first passage that communicates the suction port with the first air outlet and guides the air flow generated by the air blowing means to the first air outlet;
A second flow path that communicates the suction port and the second air outlet and guides the air flow generated by the air blowing means to the second air outlet;
Vaporizing means disposed in the second flow path for cooling the air flowing through the second flow path by heat of vaporization of water;
A cold air fan characterized in that a heat exchanger is provided for exchanging heat between the air flow cooled by the vaporization means of the second flow path and the air flow flowing through the first flow path.   The cold air fan according to claim 1, wherein the first air outlet is provided on a front surface of the casing.   The cold air fan according to claim 1 or 2, wherein the first air outlet and the air inlet are provided on the same surface of the casing.   The said 2nd blower outlet is provided in the back surface of the said casing, The cold wind fan of any one of Claims 1-3 characterized by the above-mentioned.   The distribution amount adjusting means for adjusting the distribution amount of the air flow flowing through the first flow path and the air flow flowing through the second flow path is provided. The cold air fan described in 1. The cold air fan according to any one of claims 1 to 5, further comprising a duct for exhausting air blown from the second air outlet.

Images