KR101430107B1 - A system for cooling of spray fog having prevention of falls of water by residual pressure of the nozzle - Google Patents

Abstract

According to a spray cooling system for preventing water from falling due to residual pressure of a nozzle provided in the present invention, the system can reduce the pressure of an entire tube way through a depressurization conduit when processing residual pressure and allow to perform residual depressurization through a check valve at below 20 bar when a time delays by constructing the check valve which is only operated (ON) at over 20 bar in a spray nozzle installed in a pipe. In addition, according to the present invention, the system can prevent discomfort of pedestrians and damage to displayed goods by preventing water drops from being formed or fallen on a nozzle end of the spray nozzle during processing depressurization when the spraying is stopped.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a spray cooling system having a function of preventing the water from dropping due to a residual pressure of a nozzle. BACKGROUND OF THE INVENTION < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray cooling system having a water fall prevention function by residual pressure of a nozzle, and more particularly, A spray cooling system having a water fall prevention function by a residual pressure of a nozzle which allows the residual pressure to be subtracted when the check valve is closed with the spray nozzle at a pressure below 20 bar, will be.

In general, the heat island has a significantly higher temperature in the center of the city than in the surrounding area due to population increase, increase of various artificial facilities, increase of concrete covering, increase of automobile traffic, emission of artificial heat, It refers to the phenomenon that appears. In other words, the densely populated urban areas generally have a higher temperature than other regions, and it is known that the urban climate has a distinct phenomenon different from the surrounding area. In 1927, Austrian meteorologist W. Schmidt, After examining the temperature distribution, it is confirmed that the temperature goes up toward the city center.

In urban areas, changes in surface heating due to increase in buildings, pavement roads, artificial heat due to fuel consumption, increase in emission of pollutants, greenhouse effect caused by air pollutants covering the city, high-rise buildings in the city center, And the fact that it is difficult to make the heat island phenomenon. The surface covered with buildings, roads, and concrete absorbs and stores more solar heat than earth, including moisture, and acts as a reflector that reflects solar energy.

In recent years, as a countermeasure for the heat island phenomenon, a cooling system has been employed in which a spray nozzle is installed on a pillar near a pavilion or a facility, and the surrounding air temperature is lowered by spraying from the spray nozzle.

FIG. 1 is a view showing a configuration of a conventional spray cooling system, and FIG. 2 is a view showing a configuration of another example of a conventional spray cooling system. The conventional spray cooling system shown in Figs. 1 and 2 comprises a pipe 11, a pump 13, a sensor 14, a control device 15, and a pressurized pipe 16 provided with a plurality of nozzles 12 . In the conventional spray cooling system, as shown in FIG. 1, a nozzle 12 may be installed in a pipe 11 at a long distance (100 m or more), or a pipe 11 may be used in which a spray pipe is branched as shown in FIG. In the conventional spray cooling system, the residual pressure is treated by using the discharge pipe 16 for removing the pressure accumulated in the piping 11 of the pipeline during the spray stop. In this case, the pressurization pipe 16 is provided as a separate branch line at the pump discharge port so that the spraying of the nozzle 12 can be stopped by lowering the pressure of the entire channel by opening the channel at the time of stopping spraying. However, in the case of the spray cooling system, as shown in FIGS. 1 and 2, since the length of the pipe 11 is long or branched, there is a time difference in the residual pressure in the nozzle 12, There is a problem that the probability of occurrence of collapse or falling is high. Such water fall can be a problem that can cause discomfort or damage to the product because it falls on the passing pedestrian or the displayed goods. On the other hand, Japanese Patent Laid-Open No. 2008-275304 discloses a three-dimensional area cooling system for relieving heat island phenomenon as a prior patent. These prior patents have proposed a method of controlling the stop and spray direction of spray according to the wind speed and the wind direction.

The present invention has been proposed in order to solve the above-mentioned problems of the previously proposed methods. By constituting a check valve which is operated only at 20 bar or more on the spray nozzle installed in the piping, The pressure of the entire pipeline is lowered through the pressure piping, and when the pressure is lower than 20 bar where the time delay occurs, the residual pressure can be subtracted while blocking the spray nozzle of the injection nozzle through the check valve And an object of the present invention is to provide a spray cooling system having a water fall prevention function by the residual pressure of the nozzle.

Further, it is an object of the present invention to prevent a drop of water from being formed or dropped on a nozzle end of a spray nozzle during a pressure dropping process at the stop of spraying through a check valve integrally formed with the spray nozzle, It is another object of the present invention to provide a spray cooling system having a water fall prevention function by the residual pressure of the nozzle.

According to an aspect of the present invention, there is provided a spray cooling system having a water fall prevention function of residual pressure of a nozzle,

A spray cooling system having a water fall prevention function by residual pressure of a nozzle,

Which is installed on a ceiling or a side wall of a building in which an open space through which a person passes is installed at a height not obstructive to passage of a person and has a check valve which is operated only at a certain atomizing pressure or more, Nozzle;

A water supply unit for supplying water for spraying to a pipe provided with the plurality of injection nozzles;

A spraying pressure portion provided between the water supply portion and the piping to provide a spraying pressure for water spraying;

A sensor unit for sensing a temperature and a humidity of outdoor outside the pipe; And

Wherein the control unit controls the operation for generating the spray pressure of the spray pressure unit based on the temperature and the humidity sensed through the sensor unit and the water supplied through the pipe with the specific spray pressure of the spray pressure unit turns on the check valve, And a control unit for controlling the nozzle unit so that the nozzle unit is sprayed in the form of mist particles through the injection nozzle to lower the temperature of the outside air in a state in which the nozzle unit is opened.

Preferably, the piping includes:

It can be composed of high-pressure piping made of nylon or stainless steel.

Preferably, the injection nozzle is a nozzle,

People passing through the open space can spray water fog having an average particle diameter of 20 to 30 microns, which does not get wet and can lower the temperature through the heat of vaporization without causing inconvenience.

Preferably, the check valve comprises:

It can be assumed that a specific spraying pressure of 20 bar is set so that the spraying operation of the spraying nozzle can be turned on.

More preferably, the check valve comprises:

It is possible to operate at on when the spray pressure provided by the spray pressure unit is higher than 20 bar and to operate off when the spray pressure is lower than 20 bar.

More preferably,

A pump having a motor capable of generating a spray pressure of water supplied to the pipe under the control of the control unit; And

And a depressurization line provided at a discharge port of the pump as a separate branch line for reducing the spray pressure provided to the pipeline when the water spray is stopped.

Even more preferably,

The spray pressure generated in the spray pressure portion is controlled to be in the range of 40 bar to 85 bar while the spray pressure of the lower limit temperature is set to 40 bar and the spray pressure is increased by 3 bar for every 1 degree increase from the lower limit temperature of 25 degrees At a maximum temperature of 40 ° C, the spray pressure is controlled to 85 bar,

When the water spray is stopped, the spray pressure is rapidly lowered to 20 bar through the discharge pipe of the spray pressure portion, and when the pressure drop is 20 bar or less, the check valve closes the nozzle and the residual pressure is reduced So that a phenomenon that water droplets are formed or dropped on the end of the injection nozzle can be prevented.

According to the spray cooling system having the water drop prevention function by the residual pressure of the nozzle proposed in the present invention, by constituting the check valve which is operated only at 20 bar or more on the spray nozzle provided in the pipe, In case of stopping the residual pressure in the pipeline when stopping, reduce the pressure of the entire pipeline through the depressurization line. When the time delay occurs, if the pressure is less than 20 bar, the pressure of the injection nozzle is blocked through the check valve. .

Further, according to the present invention, it is possible to prevent the droplet from being formed or dropped on the nozzle end of the injection nozzle during the pressure dropping process at the stop of spraying through the check valve integrally formed with the injection nozzle, So that damage can be prevented.

1 is a view showing a configuration of a conventional spray cooling system;
2 is a view showing a configuration of another example of a conventional spray cooling system;
3 is a view showing a configuration of a functional block of a spray cooling system having a water fall prevention function of residual pressure of a nozzle according to an embodiment of the present invention.
4 is a view showing an installation structure of a spray cooling system having a water fall prevention function by residual pressure of a nozzle according to an embodiment of the present invention.
5 is a view showing a detailed configuration of a spray nozzle installed in a piping in a spray cooling system having a water fall prevention function of residual pressure of a nozzle according to an embodiment of the present invention.
6 is a view showing an example of an installation configuration of a spray cooling system having a water fall prevention function by residual pressure of a nozzle according to an embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, in order that those skilled in the art can easily carry out the present invention. In the following detailed description of the preferred embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In the drawings, like reference numerals are used throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it may be referred to as 'indirectly connected' not only with 'directly connected' . Also, to "include" an element means that it may include other elements, rather than excluding other elements, unless specifically stated otherwise.

FIG. 3 is a view showing a configuration of a functional block of a spray cooling system having a water fall prevention function of residual pressure of a nozzle according to an embodiment of the present invention. FIG. FIG. 1 is a view showing an installation configuration of a spray cooling system having a water fall prevention function by the water spraying system. 3 and 4, a spray cooling system having a water fall prevention function of residual pressure of a nozzle according to an embodiment of the present invention includes a spray nozzle 110, a water supply unit 120, A controller unit 130, a sensor unit 140, and a controller unit 150.

The injection nozzle 110 is installed on a ceiling of a building or a side wall of a building provided with an open space through which a person passes and is installed in a pipe 101 which is installed at a height not to interfere with the passage of a person, And the check valve 111 is provided. The injection nozzles 110 are installed in a plurality of pipes 101 composed of high-pressure pipes made of nylon or stainless steel. In addition, the injection nozzle 110 can spray water fog having an average particle diameter of 20 to 30 microns, which can lower the temperature through the heat of evaporation without causing wetting of persons passing through the open space and inconvenience. Here, it is assumed that the check valve 111 of the injection nozzle 110 is set to 20 bar as a specific spraying pressure at which spraying of the spraying nozzle 110 can be turned on. That is, the check valve 111 operates on when the spray pressure provided by the spray pressure unit 130 is 20 bar or more, and can be operated off when the spray pressure is 20 bar or less. have. The reason why the operation of the check valve 111 is turned on only at 20 bar or more is that the spray pipe of the pipe 101 is divided into several parts or the time when the residual pressure is released from the nozzle of a long distance There is a high probability that water droplets will form on the nozzle end of the injection nozzle 110 or fall off. Normally, the residual pressure supplied to the pipe 101 falls rapidly from 80 bar to 20 bar through the pressurizing pipe 132, which will be described later, but falls below 20 bar. The check valve 111 of the injection nozzle 110 is operated only when the operation of the check valve 111 installed on the injection nozzle 110 is operated at 20 bar or more and the residual pressure becomes 20 bar or less, It is possible to prevent water fall.

The water supply unit 120 is a structure for supplying water for spraying to the pipe 101 provided with a plurality of injection nozzles 110. The water supply unit 120 may include a water tank for supplying tap water or a water tank for storing a predetermined amount of water. In the present invention, it is preferable to connect to a water supply for supplying tap water so that continuous spraying is performed and there is no restriction on the installation place.

The spray pressure portion 130 is provided between the water supply portion 120 and the pipe 101 and is a structure for providing a spray pressure for spraying water. The spray pressure unit 130 includes a pump 131 having a motor capable of generating a spray pressure of water supplied to the pipe 101 under the control of the control unit 150, And a depressurization line 132 installed at the branch line of the pipeline 101 for lowering the spray pressure provided to the pipeline 101 at the time of stopping the operation of the water spray. The spray pressure unit 130 is driven to generate a spray pressure by the rotational speed of the pump 131 determined by the rpm of the motor under the drive control of the controller unit 150, The spraying pressure can be adjusted by varying the number of rotations of the sprayer 131. That is, the spraying amount of the spraying nozzle 110 can be increased or decreased according to the spraying pressure generated in the spraying pressure portion 130, which allows the spraying amount corresponding to the high temperature and the low temperature to be used as desired.

The sensor unit 140 is a structure for sensing the outdoor temperature and humidity in which the pipe 101 is installed. The sensor unit 140 may include a temperature sensor for temperature measurement and a humidity sensor for humidity sensing. At this time, the pressure sensor 130 may further include a pressure sensor for sensing the spray pressure generated by the spray pressure unit 130.

The control unit 150 controls driving for generating a spraying pressure of the spraying pressure unit 130 based on the temperature and humidity sensed through the sensor unit 140 and controls the spraying pressure of the spraying pressure unit 130 The water supplied through the pipe 101 turns on the check valve 111 so that the nozzle is sprayed in the form of mist particles through the spray nozzle 110 in a state in which the atomizer is opened to lower the temperature of the outside air Driving control. The control unit 150 drives and controls the spray pressure generated by the spray pressure unit 130 in the range of 40 to 85 bar while setting the spray pressure of the lower limit temperature of 25 degrees to 40 bar, The spray pressure is increased up to 3 bar and the spray pressure can be controlled up to 85 bar at a maximum temperature of 40 degrees. In addition, when the water spray is stopped, the control unit 150 rapidly lowers the spraying pressure to 20 bar through the depressurizing line 132 of the spraying pressure unit 130, and when the pressure drops below 20 bar It is possible to prevent the phenomenon that droplets are formed or dropped on the end of the injection nozzle 110 by reducing the residual pressure in the state where the check valve 111 blocks the nozzle spray nozzle. When the humidity sensed by the sensor unit 140 exceeds 90% of the upper limit humidity of 90%, the control unit 150 stops the spraying operation of the spraying nozzle 110, So as to lower the pressure of the pipe 101 to the pipe.

FIG. 5 is a view showing a detailed configuration of an injection nozzle installed in a pipe in a spray cooling system having a water fall prevention function of residual pressure of a nozzle according to an embodiment of the present invention. FIG. 1 is a view showing an example of the installation structure of a spray cooling system having a water fall prevention function by residual pressure of a nozzle according to the present invention. 5 shows a configuration in which a plurality of injection nozzles 110 are provided in the pipe 101 and a check valve 111 is provided in the injection nozzle 110 through an enlarged view. That is, the check valve 111 of the injection nozzle 110 operates on the basis of the spraying pressure of 20 bar so as to prevent water droplets from falling or falling on the injection nozzle 110. FIG. 6 shows an example installed in a traditional market. When water droplets fall on a product displayed for sale in front of a shop, there is a fear of damaging the product. Therefore, water can be prevented from being dropped by effectively draining residual pressure when the spray is stopped.

The present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics of the invention.

110: injection nozzle 111: check valve
120: water supply part 130: spray pressure part
131: Pump 132:
140: sensor unit 150: control unit

Claims (7)

A spray cooling system having a water fall prevention function by residual pressure of a nozzle,
A check valve 111 installed on a pipe 101 installed at a ceiling or one side wall of a building in which an open space through which a person passes is installed so as not to interfere with passage of a person, A plurality of injection nozzles 110 having a plurality of nozzles 110;
A water supply unit 120 for supplying water for spraying to the pipe 101 provided with the plurality of injection nozzles 110;
A spraying pressure part 130 installed between the water supplying part 120 and the pipe 101 for providing a spraying pressure for water spraying;
A sensor unit 140 for sensing the outdoor temperature and humidity at which the pipe 101 is installed; And
And controls the driving for generating the spraying pressure of the spraying pressure unit 130 based on the temperature and the humidity sensed through the sensor unit 140. The spraying pressure of the spraying pressure unit 130 ) Is operated to turn on the check valve 111 so that the nozzle is sprayed in the form of mist particles through the spray nozzle 110 in a state in which the atomizer is opened to lower the temperature of the outside air And a control unit 150,
The check valve (111)
When the atomizing pressure provided by the atomizing pressure unit 130 is higher than 20 bar, it operates on and when the atomizing pressure is lower than 20 bar, the atomizing unit operates at an off-
The spraying pressure unit 130 is configured to apply a high-
A pump 131 having a motor capable of generating a spray pressure of water supplied to the pipe 101 under the control of the control unit 150; (132) for lowering the spray pressure provided to the pipe (101) when the operation of the water spray is stopped,
The control unit 150,
The spray pressure generated in the spray pressure unit 130 is controlled to be in the range of 40 bar to 85 bar while the spray pressure at the lower limit temperature of 25 degrees is set at 40 bar and the spray pressure is increased to 3 bar The spray pressure is controlled to be 85 bar at a maximum temperature of 40 degrees and the spray pressure is rapidly lowered to 20 bar through the depressurization line 132 of the spray pressure unit 130 when water spray is stopped, The residual pressure is reduced in a state in which the check valve 111 blocks the nozzle nozzle, so that the droplet is prevented from being formed or dropped on the end of the injection nozzle 110 Wherein the nozzle has a function of preventing water from falling due to a residual pressure of the nozzle.
The apparatus according to claim 1, wherein the pipe (101)
Wherein the nozzle is made of a high-pressure pipe made of nylon or stainless steel.
The ink jet recording apparatus according to claim 1, wherein the injection nozzle (110)
Characterized in that the people who pass through the open space are sprayed with a water fog having an average particle diameter of 20 to 30 microns which does not get wet and does not inconvenience but can lower the temperature through the heat of evaporation. Spray cooling system having function.
4. The apparatus according to any one of claims 1 to 3, wherein the check valve (111)
Wherein a spray pressure of 20 bar is set as a specific spray pressure capable of turning on spraying of the spray nozzle (110).
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