JP2019002671A - Method for improving air-conditioning efficiency of outdoor machine storing air-conditioning mechanism therein - Google Patents

Abstract

To improve heat exchange for an outdoor machine of an air conditioning, to enhance air-conditioning efficiency.SOLUTION: A method comprises providing a hydrophilic coat on a cover of an outdoor machine of an air conditioner and/or a surface surrounding a place where the outdoor machine of the air conditioner is installed, to improve air-conditioning efficiency of the air conditioner, wherein the hydrophilic coat is mainly composed of methanol on a coating surface coated with emulsion paint, and comprises a component containing minute amount of water, tin oxide and silicon oxide, wherein the emulsion paint is obtained by blending hollow beads to acrylic emulsion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for increasing the cooling / heating efficiency of an outdoor unit in which an air-conditioning mechanism is housed.

  As an outdoor unit that houses an air conditioning mechanism, an outdoor unit of an air conditioner that houses an air conditioning mechanism that cools and heats by compressing and expanding a refrigerant by a compressor, a vending machine, and the like can be given.

In recent years, power saving has been demanded in all fields. The power consumption of air conditioners used for cooling in summer and heating in winter accounts for a large percentage. Increasing the air conditioning efficiency of the air conditioner and setting the room temperature higher during cooling and lower during heating will lead to power saving.

  In addition, the air conditioner itself has been improved in efficiency such as fine control using an inverter and air conditioning only in a necessary area using a sensor such as a human sensor.

  However, an air conditioner is a heat pump that circulates refrigerant between an indoor unit and an outdoor unit and repeatedly condenses and evaporates, thereby releasing indoor heat to the outside during cooling and releasing heat from the outdoor air to the room during heating. Therefore, it is possible to improve the cooling / heating efficiency by lowering the ambient temperature of the outdoor unit during cooling in summer, and conversely increasing the ambient temperature of the outdoor unit during heating in winter, leading to power saving.

On the other hand, the coating layer containing hollow beads is known to have high solar reflection and high heat reflection effects on the hollow beads, and therefore has an excellent heat insulation / heat shielding function (Japanese Patent Laid-Open No. 2010-248852). JP-A-11-90328), and the following patent document discloses that a heat shield / heat insulation layer using the same is provided on the surface of an outdoor unit or on the peripheral surface of the installation region.

JP 2009-262378 A JP 2007-307528 A Japanese Patent No. 603824 Japanese Patent No. 6050878 Japanese Patent Laying-Open No. 2015-117924

  Among them, Patent Document 5 uses a water-based paint in which hollow beads are blended with an acrylic emulsion as a heat-shielding / heat-insulating paint.

This is because by using the low water content thermal conductivity, the hollow bead blend layer is made into a water layer, so that the temperature increase in the outdoor unit can be suppressed in the summer, and the temperature in the outdoor unit is decreased in the winter. As a result, the heat shielding / insulating effect superior to that of oil-based ones is exhibited.

However, if the heat insulation / heat insulation layer formed by applying water-based paint is left in the atmosphere for a long time, the water layer blended with hollow beads will gradually be lost due to evaporation of moisture, etc., and the heat insulation / heat insulation effect will decrease. To do.

    Therefore, the present invention provides an outdoor unit cover and / or the outdoor unit installed in the present invention as a method for increasing the cooling / heating efficiency of an air conditioner outdoor unit or vending machine that is an air conditioner that houses an air conditioning mechanism inside. It is proposed to provide a heat-shielding / heat-insulating layer in which a hydrophilic coat is formed on the painted surface of a water-based paint in which hollow beads are blended with acrylic emulsion on the peripheral surface.

Further, in the present invention, a board is provided on the upper part of the outdoor unit, and a heat-insulating / heat-insulating layer in which a hydrophilic coat is formed on the painted surface of the water-based paint in which hollow beads are blended with acrylic emulsion on the upper surface of the board is provided. This is a proposal.

That is, in the present invention, a hydrophilic coat having an affinity for the painted surface of the water-based paint blended with hollow beads is formed, so that a water layer blended with hollow beads is lost even if left in the atmosphere for a long period of time. Therefore, the temperature increase in the outdoor unit can be suppressed in the summer, and the temperature decrease in the outdoor unit can be suppressed in the winter, so that energy saving of the air conditioner can be achieved.

Here, as a component of a hydrophilic coat, the component which has methanol as a main component and contains a trace amount of water, a tin oxide, and a silicon oxide can be mentioned.

In the present invention, a hydrophilic coating is applied to the painted surface of an aqueous paint in which hollow beads are blended with acrylic emulsion around the cover or installation of an air conditioner outdoor unit or vending machine that houses a cooling and heating mechanism that cools and heats by compressing and expanding refrigerant by a compressor. By providing a heat-insulating and heat-insulating layer that has been subjected to heat treatment, it is possible to continuously improve the cooling and heating efficiency of the aircraft, to suppress the temperature rise in the aircraft in the summer, and to suppress the temperature drop in the winter. It is possible to save energy of the air conditioner.

Further, in the present invention, there is a shade effect in the summer as a cocoon by providing a slat in the upper part of an outdoor unit or vending machine of an air conditioner that houses an air conditioning mechanism that cools and heats by compressing and expanding the refrigerant by a compressor, In winter, it is effective to prevent cold and prevent frost, and on the upper surface of the slats, a heat-insulating / insulating layer with a hydrophilic coat is provided on the surface of the water-based paint blended with acrylic emulsion and hollow beads. The air conditioning efficiency of the air conditioner can be improved, the temperature rise in the machine can be suppressed in the summer, and the temperature drop can be suppressed in the winter, thereby saving energy of the air conditioner.

Showing one embodiment of the present invention The figure which shows the other embodiment of this invention The figure which shows the other embodiment of this invention The figure which provided the heat-shielding and heat-insulating layer of the present invention on the upper surface of the roof plate provided in the upper part of the outdoor unit The figure which provided the heat-shielding and heat-insulating layer of the present invention on the upper surface of the slats provided at the upper part of the vending machine

  The cover of the air conditioner outdoor unit and / or the surface around which the air conditioner outdoor unit is installed has a water-based paint blended with acrylic emulsion and hollow beads on the surface of the paint. Methanol is the main component, and a small amount of water, tin oxide, silicon oxide To improve the air conditioning efficiency of air conditioners by providing a heat-shielding / heat-insulating layer with a hydrophilic coat consisting of components containing

  FIG. 1 shows an embodiment of a method for increasing the cooling / heating efficiency of an air conditioner according to the present invention. In FIG. 1, when there are a floor surface and a nearby side surface as a periphery where the air conditioner outdoor units 1 and 2 are installed, heat shielding / heat insulating layers 5 and 6 are applied and formed on the nearby side surfaces, respectively.

The heat-insulating and heat-insulating layers 5 and 6 are formed by applying a hydrophilic coat on the painted surface of a water-based paint in which hollow beads are blended with acrylic emulsion on the surrounding concrete surface or asphalt surface.

As a hydrophilic coat, its components should be 90% methanol, 4% pure water, 0.1% tin (IV) oxide, 2% silicon dioxide (trade name Super Glass: Sketch Products Co., Ltd.) Can do.

Thus, by providing the heat shielding / heat insulating layers 5 and 6 around the air conditioner outdoor units 1 and 2, the structure of the floor and side walls around the air conditioner outdoor units 1 and 2 during the cooling operation of the air conditioner in summer ( For example, concrete can be prevented from being heated by being heated by direct sunlight.

For this reason, the temperature of the outside air above the heat shield / heat insulating layers 5 and 6 can be lowered, and the temperature of the ambient air sucked from the outdoor air inlet 3 of the air conditioner outdoor units 1 and 2 can be lowered.

Moreover, at the time of air conditioning heating operation in winter, even if the floor surface (concrete or asphalt) around the air conditioner outdoor units 1 and 2 or the structure on the side wall (for example, concrete) cools, the temperature can be suppressed from decreasing.

As a result, by providing the heat-insulating / heat-insulating layers 5 and 6 around the air conditioner outdoor units 1 and 2, the temperature of the ambient air sucked from the outdoor air intake port 3 of the air conditioner outdoor units 1 and 2 can be reduced as compared with the case without this. Can be raised.

In the experiment on the size of the heat insulating / insulating layers 5 and 6, if the height of the air conditioner outdoor unit 1 is h, the air conditioning efficiency of the air conditioner is about 10% by setting the application surface with a width of 2h or more in the periphery. The result is improved.

Next, FIG. 2 shows another embodiment of the method for improving the air conditioning efficiency of the present invention. In FIG. 2, as in the case of FIG. 1, if there is a floor surface or a nearby side surface as the periphery where the air conditioner outdoor unit 1 is installed, the heat shielding / heat insulating layers 5 and 6 are applied and formed on the nearby side surface. The heat shield / heat insulation layers 7 and 8 formed in the same manner as the heat shield / heat insulation layers 5 and 6 are applied and formed over the entire surface of the cover 2.

By providing heat-insulating and heat-insulating layers 7 and 8 over the entire cover of the air conditioner outdoor unit 1, direct sunlight is applied during the cooling operation of the air conditioner in the summer to suppress an increase in the temperature of the cover of the air conditioner outdoor unit 1 and 2 It is possible to prevent the internal air, the outdoor heat exchanger, the compressor, and the like from becoming hot.

In addition, during the air conditioning heating operation in winter, the heat insulating and heat insulating layers 7 and 8 are applied and formed on the entire cover of the air conditioner outdoor units 1 and 2 so that the air conditioner outdoor units 1 and 2 are cooled by the outside air. Can prevent.

Compared to the experimental example of FIG. 1, by further providing the heat shielding / heat insulating layers 7 and 8 on the entire cover of the outdoor unit 1, the result is that the air conditioning efficiency of the air conditioner can be increased by about 20%.

Next, FIG. 3 shows another embodiment of the method for increasing the cooling / heating efficiency of the air conditioner of the present invention. In FIG. 3, heat shield / heat insulation layers 7 and 8 are applied and formed on the covers of the air conditioner outdoor units 13 to 16 installed on the roof 10 of the building 9. Further, a heat shielding / heat insulating layer 17 is applied and formed on the floor surface of the rooftop 10 around the air conditioner outdoor units 13 to 16. Further, a heat shielding / heat insulating layer 18 is applied and formed on the side wall 12 in the vicinity of the air conditioner outdoor units 13 to 16 having the entrance 11 to the rooftop 10.

The heat shield / heat insulation layers 17 and 18 are applied and formed in the same manner as the heat shield / heat insulation layer 5.6. That is, the heat shielding / heat insulating layer 17 is applied to concrete on which the air conditioner outdoor units 13 to 16 are installed, or an aqueous paint in which hollow beads are blended with acrylic emulsion is applied to an asphalt floor surface, and a hydrophilic coat (for example, , Trade name Super Glass: Sketch Product Co., Ltd.).

The heat-insulating / insulating layer 18 is formed by applying a water-based paint in which hollow beads are blended with acrylic emulsion to the adjacent side wall 12 and applying a hydrophilic coat (trade name Super Glass: Sketch Product Co., Ltd.) to the coated surface. Is done.

In summer, the ambient temperature of the outdoor unit installed on the rooftop or roof is around 70 ° C. The outdoor unit expands the refrigerant with a compressor, cools the hot air taken from the inlet, and sends it to the room. Although indoor heat is discharged to the outside, by providing the heat shielding / insulating layers 17 and 18, the solar heat is reflected to lower the temperature to around 40 ° C., and further radiant heat from direct sunlight can be suppressed. Cooling efficiency can be improved.

In winter, the outdoor unit of the air conditioner compresses the refrigerant with a compressor, warms the cold outside air taken in from the suction port, sends it into the room, and discharges the indoor cold air to the outside. By providing 18, it is possible to suppress the cool air in winter and take in warm air quickly, so that the heating efficiency can be improved.

Experimental example 1
A Study on the state of power reduction and CO2 reduction by using the heat-shielding and heat-insulating coating of the present invention for the amusement park rooftop outdoor unit
Experiment 1
Total power consumption and power consumption when heat insulation / insulation is not painted from January to December 2013 and total power consumption and power consumption when heat insulation and insulation is painted from January to December 2014 (1) H25 January to December total heat consumption without heat insulation and heat insulation painting is 533.046Kwh, power consumption is 11,620,403 yen (2) Total use of heat insulation and heat insulation paint situation from January to December 2014 Electricity is 445,878Kwh, electric power consumption is 9,720,140 yen (3) Reduced electric power is 87,168Kwh, reduction rate is 16.4%, reduction amount is 1,900,262 yen by experiment 2
The amount of CO2 reduction was 32,688Kg in the situation where heat insulation and heat insulation coating were carried out from January to December 2014 compared to the situation where heat insulation and heat insulation painting were not carried out from January to December 2013.

Experimental example 2
JRA facility rooftop outdoor unit investigation experiment 1 of power reduction status and CO2 reduction status by heat shield and heat insulation coating of the present invention 1
Total power consumption and power consumption when heat insulation / heat insulation painting is not performed from January to December 2014 and total power consumption and power consumption when heat insulation / heat insulation paint is applied from January to December 2015 (1) Total use of electricity without heat insulation and heat insulation coating from H26 January to December is 515,420Kwh, power consumption is 10,720,736 yen (2) Total use of heat insulation and heat insulation paint from January to December 2015 Electricity is 429,076Kwh, electric power consumption is 8,924,781 yen (3) The heat shielding and heat insulation coating of the present invention reduces the electric power to 86,344Kw, the reduction rate is 16.8%, and the reduction amount is 1,795,955 yen Experiment 2
The amount of CO2 reduction was 33,243 kg in the situation where heat insulation / insulation coating was carried out from January to December 2015 compared to the situation where heat insulation / insulation painting was not conducted from January to December 2014.

Experimental example 3
As the cover (energy saving cover) coated with the heat shielding / heat insulating layer according to the present invention, various forms are conceivable depending on the object to be covered, but the blind cover is particularly effective for the intake side of the outdoor unit.

That is, by installing a blind-type energy-saving cover coated with a heat-shielding / heat-insulating layer on the intake side of the outdoor unit, creating a shade and lowering the temperature of the outdoor unit body has a great effect.

Table 1 shows that it is possible to eliminate the amount of power used by installing a blind-type energy-saving cover with a heat shield and heat insulation layer on the intake side of the outdoor unit. If the energy saving cover is installed on the intake side of the outdoor unit, the power of 0.5 Kw can be suppressed, and a reduction of 20% is possible.

FIG. 4 shows an example in which a gutter 19 coated with a heat shielding / heat insulating layer 5 is provided on the upper part of the outdoor unit 1.
FIG. 5 shows an example in which a veneer 19 coated with a heat shielding / heat insulating layer 5 is provided on the upper part of the vending machine 20.

In this case, by providing a wall plate 19 on the upper part of the outdoor unit 1 to the vending machine 20, there is a shade effect as a bag in the summer, and in the winter, the cold is prevented and a frost prevention effect is obtained. By providing the heat shielding / insulating layer 5 of the present invention on the upper surface of the veneer for the vending machine 20, an energy saving effect of 20% is exhibited.

That is, according to the present invention, the air conditioning efficiency of the air conditioner is continuously improved by providing a heat-shielding / heat-insulating layer with a hydrophilic coating on the painted surface of the water-based paint in which hollow beads are blended with acrylic emulsion in an air conditioner outdoor unit or vending machine. Therefore, it can greatly contribute to 10% to 30% energy saving and CO2 and greenhouse gas reduction.

1, 2, 13-16 Air conditioner outdoor unit 3 Outdoor air inlet
4 Outdoor air outlet
5,6 Heat shield / heat insulation layer
7, 8 Heat insulation / heat insulation layer 9 Building 10 Roof 11 Roof top entrance 12 Side walls 17, 18 The heat insulation / heat insulation layer 19 is coated with a heat insulation / heat insulation layer.

Claims (8)

A cover for the outdoor unit that houses the cooling / heating mechanism inside and / or a heat-insulating / insulating layer with a hydrophilic coating formed on the surface of the water-based paint blended with hollow beads in acrylic emulsion on the surface around which the device is installed A method for increasing the cooling and heating efficiency of a device installed outside the room by storing the cooling and heating mechanism inside. The method according to claim 1, wherein the hydrophilic coat is a component mainly composed of methanol and containing a small amount of water, tin oxide, and silicon oxide. 2. The method according to claim 1, wherein the outdoor unit in which the air conditioning mechanism is housed is an outdoor unit of an air conditioner. The method according to claim 1, wherein the outdoor unit having a cooling / heating mechanism stored therein is a vending machine. A board is installed at the top of the outdoor unit that houses the cooling and heating mechanism inside, and a heat shield / heat insulation layer with a hydrophilic coat formed on the painted surface of the water-based paint blended with hollow beads in acrylic emulsion on the top of the board. A method for increasing the cooling and heating efficiency of an apparatus installed outside the room by storing the cooling and heating mechanism inside. 6. The method according to claim 5, wherein the hydrophilic coat is a component mainly composed of methanol and containing a small amount of water, tin oxide, and silicon oxide. 6. The method according to claim 5, wherein the outdoor unit in which an air conditioning mechanism is housed is an outdoor unit of an air conditioner. 6. The method according to claim 5, wherein the outdoor unit having a cooling / heating mechanism therein is a vending machine.

Images