JP2008164230A - Cold air generating unit and cold air generating device using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cold air generating device capable of supplying the cold air into a building by a simple device with small electric power without using a cooling apparatus, a refrigerating machine or the like. <P>SOLUTION: The plurality of cold air generating units 2 respectively constituted by setting a fine mesh-like net member 21 in adjacent to an outer face of an unit body 20 having a hollow cross-section, are arranged in parallel with each other along a wall surface or a roof surface, ducts 7, 8 connected to an upper end side and a lower end side are respectively guided to an indoor side to circulate the indoor air, a water supply portion 3 is formed at an upper portion of the cold air generating units 2, a water receiving portion 4 is disposed at a lower portion of the cold air generating units 2, the water supplied to the water supply portion 3 is supplied to surfaces of the net members 21 of the cold air generating units 2 or between the unit body 20 and the net members 21, and evaporation of the water is promoted during a time when the water flows down along the net members 21, thus the cold air generating units 2 can be cooled, and the air cooled by heat exchange with the circulated air is supplied into the room. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cold air generating unit that can blow cold air into a building with a small amount of electric power using a simple device without using a cooling device, a refrigerator, and the like, and a cold air generating device using the same.

  Conventionally, as a cold air generator for indoor use in the summer, cooling equipment using a refrigeration cycle consisting of a compressor, a condenser, an expansion valve, and a heat exchanger has been exclusively used. Several indoor cool air generators have been proposed.

  For example, in Patent Document 1 below, a cooling unit is provided in a building, and cold air is formed by exchanging sensible heat between the cold water produced by the cold water generator and the air taken into the cooling unit. A cold air ventilator has been proposed that circulates near the lower part and discharges it to the outside, and also provides a ventilator inside the building to form arousal air and circulates near the upper part of the building to discharge it to the outside. .

  Further, in Patent Document 2 below, a heat storage agent is stored in a heat storage chamber, and when storing heat, the lower suction port and the upper outlet are closed and the inside air is circulated so that the heat storage agent is cooled by a cooling device or heated by a heating device. On the other hand, at the time of cooling and heating, in the regenerative air conditioner that opens the suction port and the blowout port, sucks indoor air into the warehouse, exchanges heat with the heat storage agent, and blows it into the room, the heat storage agent is placed in the heat storage chamber. A heat storage chamber to be stored, a bypass passage having one end facing the suction port from a lower portion of the heat storage chamber, and the other end facing the blowout port and an upper opening of the heat storage chamber, and the heat storage chamber closer to the upper portion in the heat storage chamber An air hole communicating with the bypass passage, and an internal air circulation of the air inside the cabinet and a suction of outside air installed in the bypass passage between the portion of the air hole and the portion of the upper opening of the heat storage chamber, and A blower for blowing out, Serial bypass the heat storage type air conditioner provided with the air mix damper and flow area and flow area of the air hole opening and closing control such contradictory each have been proposed.

Furthermore, in Patent Document 3 below, a tower body that vertically penetrates the roof of the building and has an air passage extending in the up-down direction inside, an air intake provided in the upper part of the tower body, A water tank provided in the lower part of the tower body, an air outlet provided in a side surface of the tower body in the building, and a shower-like water in the water tank from the upper part of the air passage downward in the air passage There has been proposed a cold air device including water jetting means for jetting water.
JP 2004-324992 A JP 7-260215 A JP-A-8-219486

  However, in the case of the invention described in Patent Document 1, although it is possible to reduce the electric power compared to the conventional one, it is necessary to construct a cooling tower outside the building for the cooling water generator, and the apparatus configuration becomes large. There are problems such as. Further, the invention described in Patent Document 2 uses a time zone with low power consumption to cool or heat the heat storage material in the heat storage, and uses the heat stored in the heat storage material as a cooling heat source or a heating heat source. However, there is a limit to the degree of power saving.

  In addition, the invention described in Patent Document 3 is such that air is cooled by the heat of vaporization of the sprayed water droplets and is blown into the room as cold air, and considerable power saving can be expected. There is a problem that it is not practical because it is necessary to provide a tower through the roof of the building.

  Therefore, the main problem of the present invention is to provide a cold air generating unit that can blow cold air into a building with a small amount of power with a simple device without using a cooling device, a refrigerator, etc., and a cold air generating device using the same. There is to do.

  In order to solve the above-mentioned problem, a cold wind generating unit is provided as a first aspect of the present invention, characterized in that a fine mesh net-like member is stretched close to the outer surface of the unit body having a hollow cross section. The

  According to the first aspect of the present invention, a unit structure for generating cold air is provided in which a net-like member having a fine mesh is stretched close to the outer surface of a unit main body having a hollow cross section such as a cylindrical shape or a rectangular tube shape. The cold air generating unit is arranged in parallel with one or more along the wall surface or the roof surface, and the ducts connected to the upper end side and the lower end side are respectively led to the indoor side so that indoor air can be circulated. In the exposed part of the cold wind generating unit, a water supply unit is provided at the upper part of the cold wind generating unit, a water receiving unit is provided at the lower part of the cold wind generating unit, and the water supplied to the water supply unit is generated by the cold wind. Water is supplied between the surface of the net-like member of the unit or between the unit main body and the net-like member, and the cooling air generating unit is cooled by encouraging evaporation while flowing down through the net-like member. The air cooled by the heat exchange can be supplied into the room. At the same time, the heat from the air around the building is removed by the heat of vaporization and the atmospheric temperature is lowered, so that the outer wall temperature of the building can be reduced.

  On the other hand, in this cold wind generating unit, water is retained by surface tension between the mesh opening of the net-like member and the net-like member and the outer surface of the unit body, so the supplied water is formed in a uniform water film shape In addition to being able to prevent scattering due to wind and the like. In addition, water is held between the mesh opening of the net-like member and the net-like member and the outer surface of the unit main body, and the time required for the water to flow to the water receiving portion due to resistance to flowing water by the net-like member. Therefore, the water-saving effect and the evaporation efficiency are excellent.

  According to a second aspect of the present invention, there is provided the cold air generating unit according to the first aspect, wherein the outer surface of the unit body corresponding to the stretched surface of the net-like member is an uneven surface.

  In the invention of the second aspect, the outer surface of the unit body corresponding to the stretched surface of the net-like member is an uneven surface, and the flow of water can be controlled by the uneven surface, The heat exchange efficiency can be improved by increasing the contact area.

  According to a third aspect of the present invention, there is provided the cold air generating unit according to any one of the first and second aspects, wherein a large number of heat exchange fins are provided on the inner surface of the hollow portion of the unit body.

  According to the third aspect of the present invention, a large number of heat exchange fins are provided on the inner surface of the hollow portion of the unit main body, and the heat exchange rate with the circulating air is improved.

  According to a fourth aspect of the present invention, there is provided the cold air generating unit according to any one of the first to third aspects, wherein a separation width between the net-like member and the outer surface of the unit main body is 1 to 4 mm.

  The invention according to claim 4 is such that a separation width between the net-like member and the outer surface of the unit main body is 1 to 4 mm, and the net-like member is stretched by the gap so that the water sprayed is unitized. Rather than flowing down the outer surface of the main body directly, water is held by surface tension between the mesh opening of the net-like member or between the net-like member and the outer surface of the unit main body, and the flow resistance by the net-like member is large. It begins to flow at a slow speed.

  According to a fifth aspect of the present invention, there is provided the cold air generating unit according to any one of the first to fourth aspects, wherein the mesh of the net-like member has an opening size of 0.5 to 1.0 mm square.

  In the invention according to the fifth aspect, the mesh of the net-like member has an opening size of 0.5 to 1.0 mm square, and the sprayed water is easily held in the mesh opening due to surface tension.

  As this invention which concerns on Claim 6, while arranging the unit for the cold wind generation | occurrence | production in any one of the said Claims 1-5 in parallel along the wall surface or the roof surface, the duct connected to the upper end side and the lower end side. Each of them is configured to be able to circulate indoor air guided to the indoor side, and at the outdoor exposed portion of the cold air generating unit, a water supply unit is provided above the cold air generating unit and water is received at the lower part of the cold air generating unit. A portion is provided, and water supplied to the water supply portion is supplied between the surface of the net-like member of the cold air generating unit or between the unit body and the net-like member, and promotes evaporation while flowing down the net-like member. Thus, there is provided a cold air generating apparatus characterized in that the cold air generating unit is cooled and air cooled by heat exchange with circulating air is supplied into the room.

  As described above in detail, according to the present invention, it is possible to blow cool air into a building with a simple device with low power without using a cooling device, a refrigerator, or the like.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 is a view of an outdoor side of a cold air generator 1 according to the present invention, FIG. 2 is a view taken along the line II-II in FIG. 1, FIG. 3 is a view taken along the line III-III in FIG. IV-IV line enlarged view, FIG. 5 is the principal part enlarged view.

  As shown in FIG. 1 to FIG. 3, the cold air generating apparatus 1 includes cold air generating units 2, 2, and so on, in which a fine mesh net-like member 21 is stretched close to the outer surface of the unit body 20. In a state where they are separated from each other by a predetermined distance, they are arranged in parallel in a vertical orientation along the wall surface, and the ducts 7 and 8 connected to the upper end side and the lower end side are respectively led to the indoor side, and the middle of the duct flow path A blower (not shown) is arranged in the room so that the room air can be circulated. On the other hand, in the outdoor exposed portion of the cold air generation unit 2, 2 ..., above the cold air generation unit 2, 2 ... While providing the water supply part 3, the water receiving part 4 is provided in the lower part of the said cold wind generation unit 2,2, ..., The surface of the net-like member 21 of the cold wind generation unit 2,2, ... is supplied to the said water supply part 3 Or unit body 20 and net Water can be supplied to the member 21 and promoted to evaporate while flowing down through the net-like member 21, thereby cooling the unit for generating cold air and supplying air cooled by heat exchange with the circulating air to the room It is what.

  Hereinafter, the structure of the cold air generating unit 2 and the cold air generating device 1 will be described in detail.

[Structure of cold air generating unit 2]
As shown in detail in FIG. 5, the cold air generating unit 2 has a structure in which a fine mesh net-like member 21 is stretched close to the outer surface of a unit body 20 having a cylindrical hollow cross section. is there. The unit body 20 can be made of resin, steel, or the like, but is preferably made of aluminum or aluminum alloy having high thermal conductivity, and is preferably manufactured by extrusion molding. In addition, if a titanium oxide film is formed on the surface, the hydrophilicity is improved and the diffusibility of water is increased to promote evaporation, and the antibacterial properties of titanium oxide prevent the generation of mold and make it difficult for dirt to adhere. It becomes. The unit body 20 and the net-like member 21 may be colored, pictured or patterned in consideration of design.

  In the present embodiment, an example of the cylindrical unit main body 20 has been shown. However, as shown in FIG. 9, a rectangular tube-shaped hollow cross section is provided, and a net-like member 21 is stretched on the front surface and the back surface, respectively. A structure may be used, or as shown in FIG. 10, two isosceles triangular cross-sections may be used, and a net-like member 21 may be stretched on each of the two oblique sides. In the case of this isosceles triangular cross section, the heat receiving surface (the non-stretched surface of the net-like member 21) is small and the cooling surface on which the net-like member 21 is stretched can be ensured in comparison with the above-mentioned square tube cross section. To become better. In addition to these, as shown in FIG. 11, a cool air generating unit 22 configured to form an intermediate cross section by combining a flat unit main body 23 </ b> A and an arcuate exterior plate 23 </ b> B may be used.

  In the unit main body 20, the outer surface of the unit main body 20 corresponding to the stretched surface of the net-like member 21, the surface side in the illustrated example is an uneven surface, and in the illustrated example, convex portions having a triangular cross section at a predetermined interval in the width direction. It is set as the uneven surface which formed 20a, 20a .... By making the outer surface an uneven surface, it becomes possible to control the flowing water such as separation of the flowing water channel, and to improve the heat exchange efficiency by increasing the contact area with the flowing water.

  Further, it is desirable to provide a large number of heat exchange fins 20b, 20b. The heat exchange fins 20b improve the efficiency of heat exchange with the circulating air, and can effectively cool the air.

  The net-like member 21 is desirably stretched in a state where the separation width S from the outer surface of the unit body 20 is 1 to 4 mm, preferably 2 to 3 mm. When the separation width S is less than 1 mm, it becomes difficult to hold water between the net-like member 21 and the outer surface of the unit main body 20, and the amount of flowing water held on the unit surface is reduced, resulting in a reduction in evaporation efficiency. When the separation width S exceeds 4 mm, the sprinkled water flows only on the outer surface of the unit main body 20 and flows down at a high speed, and is likely to be scattered and scattered from the outer surface of the unit main body 20 by wind or the like. It is not preferable.

  As the net-like member 21, a metal net such as stainless steel, a net made of synthetic resin, or the like can be suitably used. It is desirable to use a mesh having an opening size of 0.5 to 1.0 mm square. When the mesh size is less than 0.5 mm, the appearance after construction appears to be a plate surface, and the water retention amount at the mesh opening is reduced, resulting in a reduction in evaporation efficiency. Further, when the mesh size exceeds 1.0 mm, water is likely to be scattered, and the surface tension is cut to reduce the water retention amount at the mesh opening.

  As shown in FIG. 5, the net-like member 21 has a groove 20 c formed in the outer surface side of the unit main body 20 along the longitudinal direction of the member, and a bead 24 is inserted into the net-like member 21. What is necessary is just to support the edge part.

[Cold air generator 1]
In order to configure the cold air generating device 1 using the cold air generating unit 2, the cold air generating units 2, 2... Are separated from the building wall surface H by a predetermined distance as shown in FIGS. In the state and along the wall surface H, a large number of them are arranged in parallel, and the ducts 7 and 8 connected to the upper end side and the lower end side are respectively led to the indoor side, and a blower (not shown) is provided in the middle of the duct flow path. It arrange | positions and it is set as the structure which can circulate indoor air. In the example shown in the figure, the upward flow circulation channel is directed from the lower side to the upper side.

  In the outdoor exposed portion of the cold air generating unit 2, a water supply unit 3 is provided above the cold air generating units 2, 2... And a water receiving unit 4 is disposed below the cold air generating units 2, 2. Try to provide it.

  As shown in detail in FIG. 7, the water supply unit 3 is an annular hollow member that externally fits the cold air generating unit 2 in which two hollow portions 3 a and 3 b are connected vertically. The hollow portions 3a and 3b communicate with each other by a flow rate adjusting orifice hole 3c formed in the partition wall, and a horizontal overflow slit 3d is formed in the rear side wall portion of the upper side hollow portion 3b. The diverting slit 3d is arranged so as to face the cold air generating unit 2 side. A water supply pipe 5 (tip hose part) is connected to the lower side hollow part 3a. When water is supplied, the lower side hollow part 3a passes through the orifice hole 3c for flow rate adjustment and reaches the upper side hollow part 3b. The water overflowing the overflow slit 3d is sprinkled into the cold wind generating unit 2.

  The water receiving section 4 is a member in which an annular receiving section 4a for fitting the cold air generating unit 2 is formed. A water distribution pipe 6 is connected to the receiving part 4a, and water dripped from the cold wind generating unit 2 is drained to the outside. In addition, it is desirable to provide a storage tank (not shown) separately so that the water in the drain pipe 6 is stored and the circulation pipe is supplied to the cold wind generating unit 2 through the water supply pipe 5.

  And while supplying water to the water supply section 3 and supplying water between the surface of the net-like member 21 of the cold wind generating unit 2 or between the unit main body 20 and the net-like member 21, the water flows down the net-like member 21. The cooling air generating unit 2 is cooled by promoting evaporation, and the air is cooled by heat exchange with the air circulating through the cylindrical space of the cold air generating unit 2 and then supplied into the room.

  In the cold wind generating unit 2, the water uniformly supplied from the water supply unit 3 to the cold wind generating units 2, 2... Is supplied to the mesh opening of the net member 21 and the net member 21 and the outer surface of the unit body 2. Since a water film is uniformly formed on the surface of the net-like member 21 while being held by surface tension during the period of time, and the flowing water resistance by the mesh is large, it flows down at a low flowing speed. Higher evaporation efficiency is maintained by increasing the time required to flow down. Further, since the water on the surface of the net-like member 21 is held at a mesh opening or a gap between the net-like member 21 and the unit main body 20 with a high surface tension, it is difficult to scatter even when receiving wind.

  Moreover, although various methods can be considered as an example of water supply control, for example, the control method shown in FIG.

  The water supply control shown in FIG. 12 enables a continuous water supply system and a variable water supply system under water temperature monitoring. A water temperature gauge 30 is disposed inside the water receiving section 4, an electromagnetic flow control valve 32 is disposed on one water supply line, manual on-off valves 31a and 31b are disposed on both sides thereof, and a bypass bypassing the outside thereof A path 33 is provided, and a manual opening / closing valve 31c is provided in the middle thereof. In the case of the continuous water supply method, the manual on-off valves 31a and 31b are closed, and the manual on-off valve 31c of the bypass passage 33 is opened to supply water. In the case of the variable water supply system, the water receiving unit is used to grasp the surface temperature of the unit body 20 with the manual opening / closing valves 31a and 31b opened and the manual opening / closing valve 31c of the bypass passage 33 closed. The temperature of the water that has finished flowing down the cooling unit 2 is measured by the water temperature meter 30 disposed in 4, and this temperature measurement value is input to the controller 33. Based on the measured water temperature, the controller 33 qualitatively determines that the evaporation efficiency is high when the water temperature is high, sets the electromagnetic flow control valve 32 to a high opening degree, and when the water temperature is low. It is determined that the evaporation efficiency is poor, and the electromagnetic flow control valve 32 is set to 0 or a low opening.

[Other examples]
(1) In the above embodiment, the cooling structure 1 is installed for the wall surface of the building, but it can be similarly applied to the roof surface of the building.

It is an outdoor side figure of the cold wind generator 1 which concerns on this invention based on this invention. 2 is a cross-sectional view taken along the line II-II in FIG. 3 is a view (longitudinal sectional view) taken along the line III-III in FIG. FIG. 4 is an enlarged view taken along line IV-IV in FIG. FIG. 5 is an enlarged view of the main part. It is a side view of the unit 2 for generating cold air. 3 is an enlarged vertical sectional view of a water supply unit 3. FIG. 3 is an enlarged vertical sectional view of a water receiving unit 4. FIG. It is a cross-sectional view showing another example of the cold air generating unit 2. It is a cross-sectional view showing another example of the cold air generating unit 2. It is a cross-sectional view showing another example of the cold air generating unit 2. It is a system block diagram which shows the example of water supply control.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Cold wind generator 2 ... Cold wind generation unit, 3 ... Water supply part, 4 ... Water receiving part, 5 ... Water supply pipe, 6 ... Water distribution pipe, 20 ... Unit main body, 20a ... Convex part, 20b ... For heat exchange Fin, 21 ... Net-like member, H ... Wall surface

Claims (6)

  A unit for generating cold air, characterized in that a fine mesh net-like member is stretched close to the outer surface of the unit body having a hollow cross section.   The cold wind generating unit according to claim 1, wherein the outer surface of the unit body corresponding to the stretched surface of the net-like member is an uneven surface.   The unit for generating cold air according to claim 1, wherein a large number of fins for heat exchange are provided on the inner surface of the hollow portion of the unit main body.   The unit for generating cold air according to any one of claims 1 to 3, wherein a separation width between the net-like member and the outer surface of the unit main body is 1 to 4 mm.   The cold air generating unit according to any one of claims 1 to 4, wherein the mesh of the net-like member has an opening size of 0.5 to 1.0 mm square.   While arranging one or more units for generating cold air according to any one of claims 1 to 5 along a wall surface or a roof surface, ducts connected to the upper end side and the lower end side are respectively led to the indoor side to transmit the indoor air. Provide a water supply unit at the upper part of the cold wind generation unit and a water receiving unit at the lower part of the cold wind generation unit at the outdoor exposed portion of the cold wind generation unit, and supply to the water supply unit. Water is supplied between the surface of the net-like member of the cold wind generating unit or between the unit main body and the net-like member, and cooling of the cold wind generating unit is promoted by evaporating while flowing down the net-like member. A cold air generator characterized in that air cooled by heat exchange with circulating air is supplied into the room.

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