JP5606706B2 - Cooling device for outdoor unit - Google Patents

Description

  The present invention relates to an outdoor unit cooling device that cools an outdoor unit of an air conditioner.

  As a cooling device for this type of outdoor unit, a water sprinkler is provided in the outdoor unit of the air conditioner, and water is sprayed from the water sprinkler to the heat exchanger of the outdoor unit to cool the heat exchanger. There has been proposed one that reduces power consumption by reducing the power consumption (see Patent Document 1).

JP-A-5-223364

  However, in this outdoor unit cooling apparatus, since water is directly applied to the heat exchanger of the outdoor unit for cooling, there is a problem that cooling efficiency is poor and a large amount of water is used.

  In view of the above-described problems, an object of the present invention is to efficiently cool a heat exchanger of an outdoor unit of an air conditioner while suppressing the amount of water used as much as possible.

Therefore, according to a first aspect of the present invention, there is provided an outdoor unit cooling apparatus for cooling an outdoor unit of an air conditioner, wherein a spray nozzle for spraying water from a water storage tank is on the air suction side of the outdoor unit, and the spray direction is air. It arrange | positions so that it may cross substantially orthogonally to the suction direction, and arrange | positions so that it may spray in the inside of the cylinder installed substantially in parallel with the said outdoor unit, and the said cylinder has several blowing opening toward the said outdoor unit. A purification device is provided for purifying while circulating the rainwater in the water storage tank, supplying rainwater purified by ozone to the spray nozzle, and the mist of water sprayed from the spray nozzle is inside the cylinder It flows into the outdoor unit together with the sucked air through the blow-out opening while vaporizing into the outdoor unit .

A second invention is characterized in that, in the first invention, the spray nozzle comprises a two-fluid spray nozzle to which spray water and pressurized air are supplied.

According to a third invention, in the second invention, the pressurized air contains ozone.

According to 1st invention, the mist-like water sprayed from the spray nozzle flows into the inside of the cylindrical body installed substantially parallel to the outdoor unit, and is sucked in through the plurality of outlets while being vaporized here. Since it flows into the outdoor unit together, the heat exchanger inside the outdoor unit is efficiently cooled by the intake air whose temperature has been lowered by the latent heat of vaporization of water, and the amount of water used can be reduced. Moreover, since rainwater purified with ozone is used as the water sprayed from the spray nozzle, the outdoor unit can be economically and hygienically cooled without using tap water as much as possible.

According to the second aspect of the invention, the mist-like water sprayed from the spray nozzle can be ejected vigorously with the pressurized air, the spray direction can be prevented from being influenced by the wind, and can be reliably directed to the outdoor unit. .

According to the third aspect of the invention, since the pressurized air contains ozone, the rain water sprayed from the spray nozzle is purified with a smaller amount of ozone than the method of purifying the rain water in the water storage tank with the water purification device. can do.

FIG. 2 is a schematic configuration explanatory diagram of an outdoor unit cooling device applied to the description of the embodiment of the present invention. It is a front view of an outdoor unit. It is a back view of an outdoor unit. It is a cross-sectional top view, such as an outdoor unit for showing the spray direction of the spray nozzle of a reference example . It is a cross-sectional plan view of an outdoor unit or the like for showing the spraying direction of a pair of spray nozzles of a reference example. FIG. 6 is a cross-sectional plan view of an outdoor unit or the like for indicating the spraying direction of another spray nozzle in the reference example. It is explanatory drawing which shows the spraying direction of FIG. 6 from a side surface. FIG. 6 is a cross-sectional plan view of an outdoor unit or the like for indicating the spraying direction of another spray nozzle in the reference example. It is explanatory drawing which shows the spraying direction of FIG. 8 from a side surface. It is a cross-sectional plan view of an outdoor unit or the like for showing the spraying direction of another spray nozzle according to the embodiment of the present invention. It is explanatory drawing which shows the spraying direction of FIG. 10 from a side surface. It is a schematic structure explanatory view showing other examples of the outdoor unit cooling device applied to the description of the embodiment of the present invention.

  BEST MODE FOR CARRYING OUT THE INVENTION Best Mode for Carrying Out the Invention The present invention relates to an outdoor unit cooling device that cools an outdoor unit of an air conditioner such as a low temperature showcase installed in a store or an air conditioner for air conditioning in a store. A form is demonstrated referring FIG. 1 thru | or FIG.

  In FIG. 1, reference numeral 1 denotes a water storage tank, which collects rainwater from a rain gutter 2 installed in a building and stores the water through a communication pipe 3 and tap water through a water pipe 4 and a solenoid valve 5 as a water supply device. Can be supplied. The water storage tank 1 is made of black polyethylene resin, and has a three-layer structure that blocks light from entering. Thereby, algae can be prevented from being generated by photosynthesis.

  Reference numeral 11 denotes a water purification device, which purifies rainwater taken out from the water storage tank 1 through the take-out pipe 12 and returns the purified water to the water storage tank 1 through the return pipe 13. An annular circulation path is formed in parallel with the tank 1. In the water purification device 11, a circulation pump 16, a filter 17, and an injector (such as a microbubble generator) 18 are sequentially arranged in a water flow path. Then, by driving the circulation pump 16, ozone (gas) generated in an ozonizer (ozone generator) 19 that constitutes an ozone generator together with the injector 18 is introduced into the circulation path via the injector 18.

The filter 17 is made of granular activated carbon and ion exchange resin, and has an adsorption and filtration function. For rainwater, various oxides such as sulfur oxide (SOX) and nitrogen oxide (NOX) in the air, etc. , Chlorides (NaCl, CaCl ₂ , MgCl ₂ ), minerals (Ca, Mg), etc. are dissolved, but this filter 17 removes them, and ozone introduced into the circulation path is stored in the water storage tank 1. It kills Legionella bacteria in rainwater etc. (sterilization) and suppresses it from breeding.

  Reference numeral 22 denotes a two-fluid spray nozzle as a sprayer for cooling a heat exchanger, which will be described later, in the outdoor unit 23 of the air conditioner, and is supplied from the water storage tank 1 through a discharge pipe 21 by a discharge water pump 24. Water and air pressurized by the air blower 20 are mixed and sprayed in a mist form. As described above, in the present embodiment, by using the two-fluid spray nozzle 22, the outdoor unit is surely blown out by the pressurized air and the spray direction is not affected by the wind. 23, that is, the air suction port 31 on the back surface of the outdoor unit 23.

  In addition, since the one-fluid spray nozzle is easily affected by wind, there is a case where the suction air (cold air) whose temperature has been lowered due to the latent heat of vaporization of water cannot be surely directed to the air suction port 31 on the rear surface of the outdoor unit 23. Although it occurs, it is understood that there is no problem even if the outdoor unit 23 is installed where it is not affected by the wind.

  Further, a drain pipe 27 to which a drain valve 26 is attached is connected to the bottom of the water storage tank 1 so that the water storage tank 1 can be drained by opening the drain valve 26, and at the top of the water storage tank 1. The overflow pipe 28 is connected, and when a large amount of rainwater is stored in the water storage tank 1, rainwater or the like is discharged from the overflow pipe 28 to the drainage groove 29.

  The water storage tank 1 is provided with two upper and lower water level sensors 7A and 7B for detecting the water level. The water level sensor 7A is for replenishing tap water by opening and closing the solenoid valve 5 during drought when it does not rain, and maintaining the water level of the water storage tank 1 at the L2 level or higher. The water level sensor 7B is for any reason. This is to prevent the water pump 24 from operating when the water level of 1 drops below L1, and to prevent the water pump 24 from running idle. The circulation pump 16 is provided with a pressure switch PS1.

  The pressure switch PS1 is for detecting clogging of the filter 17, and when the filter 17 is clogged and the pressure of the circulation pump 16 rises, a filter cleaning LED (not shown) is turned on to clean the filter 17. It is a thing to encourage.

  As shown in FIGS. 2 to 4, the outdoor unit 23 of the air conditioner has a substantially rectangular parallelepiped shape, and has an air outlet 30 on the front and an air inlet 31 on the back and right side. In addition, an L-type heat exchanger 32, a propeller type blower fan 33, and a compressor 34 for compressing the refrigerant are provided inside the outdoor unit 23. And in the longitudinal direction part of the heat exchanger 32 which opposes the said ventilation fan 33, the heat exchange fin is arrange | positioned in parallel so that the outdoor air suck | inhaled from the air suction inlet 31 may pass easily. Yes. Therefore, the outdoor air sucked from the air suction port 31 by the operation of the blower fan 33 passes through the heat exchanger 32, where heat is exchanged with the refrigerant flowing through the heat exchanger 32, and then outward from the air blowing port 30. Discharged.

As shown in FIG. 4 of the reference example , the outdoor unit 23 is provided with an air suction port 31 whose rear surface is installed substantially parallel to the building wall 35, that is, the outdoor unit 23 includes the building wall 35 and the air suction port 31. In many cases, the wall 35 of the building and the back surface thereof having the air suction port 31 are arranged substantially in parallel with a space between them. The spray nozzle 22 is arranged on the back side of the outdoor unit 23 on the air suction port 31 side so that the spray direction is substantially orthogonal to the air suction direction. In addition, since the spraying direction is arranged so as to be substantially orthogonal to the air suction direction, it may be either the left-right direction of the outdoor unit 23 as viewed from the front, or may be sprayed from the upper direction to the lower direction. A plurality of the spray nozzles 22 may be arranged vertically in parallel.

  In the outdoor unit cooling device described above, the circulation pump 16 of the water purification device 11 is driven, and the ozone generated by the ozonizer 19 is introduced into the circulation path via the injector 18 while the rain water in the water storage tank 1 is purified. It can be purified by circulating it through the take-out pipe 12 and the return pipe 13 in the apparatus 11. The purified water in the water storage tank 1 is supplied to the spray nozzle 22 by the operation of the water pump 24, and is pressurized by the air blower 20 to be supplied with air. By spraying, the amount of water used is less than when the outdoor unit is directly cooled with water, and heat exchange in the heat exchanger 32 is performed efficiently, the condensation pressure is reduced, and the power consumption is reduced. It is like that.

  That is, since the spray nozzle 22 of the sprayer 20 is arranged on the air suction port 31 side on the back of the outdoor unit 23 so that the spray direction is substantially orthogonal to the air suction direction, the mist sprayed from the spray nozzle 22 Water collides with the air sucked into the outdoor unit 23 at an angle of approximately 90 degrees (within a range of 80 degrees to 110 degrees, preferably 85 degrees to 95 degrees), and sucks the air while being vaporized. The heat exchanger 32 inside the outdoor unit 23 is efficiently cooled by the suction air (cold air) whose temperature has been lowered by the latent heat of vaporization of water, and compared to simply sprinkling water. The amount of rainwater used is also small.

As shown in FIG. 5 of the reference example , a pair of spray nozzles 22 and 22 are arranged on the air suction port 31 side on the back of the outdoor unit 23 and so as to face each other (opposite). The mist-like water sprayed from 22 collided with each other and vaporized while flowing into the outdoor unit 23 together with the sucked air, thereby lowering the temperature of the heat exchanger 32 inside the outdoor unit 23 due to the latent heat of vaporization of water. The intake air can be cooled more efficiently, and the amount of rainwater used can be reduced compared to simply sprinkling water.

Further , as shown in FIGS. 6 and 7 of the reference example , the spray nozzle 22 is sprayed on the air suction port 31 side on the rear surface of the outdoor unit 23 and on the wall 35 installed substantially parallel to the rear surface of the outdoor unit 31. By arranging in such a manner, the mist-like water sprayed from the spray nozzle 22 hits the wall 35 installed almost in parallel with the back surface of the outdoor unit 23 and vaporizes while flowing into the outdoor unit 23 together with the sucked air. The heat exchanger 32 inside the outdoor unit 23 is efficiently cooled by the sucked air whose temperature has been lowered by the latent heat of vaporization of water, and the amount of rainwater and the like used can be reduced as compared to simply spraying water.

Further , as shown in FIGS. 8 and 9 of the reference example , the spray nozzle 22 is installed on the air suction port 31 side of the back surface of the outdoor unit 23 and along the wall 35 substantially in parallel with the back surface of the outdoor unit 23. By arranging so as to spray on the mat 36 with good water absorption, the mist-like water sprayed from the spray nozzle 22 is absorbed by the mat 36 with good water absorption installed substantially parallel to the back surface of the outdoor unit 23. Since the gas flows into the outdoor unit 23 together with the sucked air while being vaporized, the heat exchanger 32 inside the outdoor unit 23 is efficiently cooled by the sucked air whose temperature has been lowered by the latent heat of vaporization of water, and simply sprays water. The amount of rainwater used is less than that.

  Further, as shown in FIGS. 10 and 11, the spray nozzle 22 is sprayed on the air suction port 31 side on the back surface of the outdoor unit 23 and inside the cylindrical body 37 installed substantially parallel to the back surface of the outdoor unit 23. Deploy. In this case, the spray nozzle 22 may be disposed away from the cylindrical body 37, or the spray nozzle 22 may be inserted and disposed in the cylindrical body 37.

  The cylindrical body 37 is open on the spray nozzle 22 side, but the opposite side is closed, and a plurality of outlet openings 38 are provided on the peripheral side surface toward the air suction port 31 on the rear surface of the outdoor unit 23. The mist-like water sprayed from the spray nozzle 22 flows into the cylindrical body 37 installed substantially parallel to the rear surface of the outdoor unit 23, and is vaporized here together with the sucked air through the plurality of outlet openings 38. Since it flows into the outdoor unit 23 over a wide range, the heat exchanger 32 inside the outdoor unit 23 is efficiently cooled by the suction air whose temperature has been lowered due to the latent heat of vaporization of water, and compared with simply spraying water, rainwater The amount of use etc. is also small.

  In the above-described embodiment, the rainwater in the water storage tank 1 is circulated to the water purification device 11 and purified with ozone, and the purified rainwater or the like in the water storage tank 1 is sprayed from the spray nozzle 22. Although there is an advantage that the outdoor unit 23 can be cooled economically and hygienically without using it as much as possible, as shown in FIG. 12, instead of using the water purification device 11, the air pressurized by the air blower 20 In addition, ozone may be included in an ozonizer (ozone generator) 40 to purify rainwater.

  In this case, it is possible to purify the rainwater sprayed from the spray nozzle 22 with a smaller amount of ozone when ozone is included in the pressurized air than the method of purifying the rainwater in the water storage tank 1 with the water purification device 11. The ozonizer (ozone generator) 40 may be small.

  Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description. It includes modifications or variations.

1 Water storage tank 11 Water purification device 19 Ozonizer (ozone generator)
20 sprayer 22 spray nozzle 23 outdoor unit 31 air suction port 32 heat exchanger 35 wall 36 mat 37 cylinder 38 outlet 40 ozonizer (ozone generator)

Claims (3)

In an outdoor unit cooling apparatus for cooling an outdoor unit of an air conditioner, a spray nozzle for spraying water from a water storage tank is disposed on the air suction side of the outdoor unit, and the spray direction is substantially orthogonal to the air suction direction. And is arranged so as to spray inside a cylindrical body installed substantially parallel to the outdoor unit, and the cylindrical body is provided with a plurality of outlet openings toward the outdoor unit, A purification device for purifying while circulating rainwater is provided, and rainwater purified by ozone is supplied to the spray nozzle. A cooling device for an outdoor unit that flows into the outdoor unit together with the sucked air through an opening . The cooling device for an outdoor unit according to claim 1 , wherein the spray nozzle is configured by a two-fluid spray nozzle to which spray water and pressurized air are supplied. The cooling device for an outdoor unit according to claim 2 , wherein ozone is included in the pressurized air.

Images