JP5676685B2 - Electrostatic spray head - Google Patents

Description

The present invention relates to a charging spray head that sprays spray water on a cooling target space such as an open space through which a person passes to give a refreshing feeling.

  Conventionally, as cooling equipment that can be applied to open spaces and various usage spaces where people pass, spray cooling that pressurizes and supplies finely sprayed water to the spraying head and sprays finely sprayed water, and cools the space by the vaporization heat of finely sprayed water Equipment is known.

  In such a spray cooling system, when the fine spray water sprayed from the spray head evaporates in the space, the temperature of the air is lowered by taking away the latent heat of vaporization, and some fine spray water is directly on the human skin. It is assumed that a refreshing feeling is given by instantly evaporating on the skin and taking away the heat of vaporization.

JP 2006-149294 A JP 2006-177777 A JP 2005-214578 A JP 2002-538910 A JP 2002-203657 A JP 2005-028325 A JP 2006-305321 A JP 2005-187069 A

  However, in such a conventional spray cooling equipment, the molar weight of water vapor is as small as about 60% of the molar weight of air. Although the specific gravity of air apparently increases due to the buoyancy of the evaporated water vapor, it tends to dissipate upward, and when the temperature of the air decreases, the temperature increases from the surroundings. There is a problem that air flows in, and as a result, the cooling effect is not obtained so much.

An object of the present invention is to provide a charging spray head that can provide a sufficient refreshing feeling by spraying spray water.

The present invention relates to a charging spray head that charges a cooling water spray water and sprays the cooling target space .
A head body connected to a pipe for supplying cooling water;
A spray nozzle that is connected to the head body, converts the water into air particles by spraying the cooling water into an external spray space, and sprays the water;
An induction electrode portion disposed in the ejection space;
A cylindrical water-side electrode portion that is disposed inside the head body and contacts cooling water supplied to the spray nozzle;
A rubber valve member is formed on the inflow side of the spray nozzle that opens when cooling water is supplied, and closes when the cooling water supply is stopped, and is injected when cooling water is not supplied. A water leakage prevention valve for preventing water leakage from the nozzle,
With
Applying an external electric field generated by applying a charging voltage between the induction electrode part and the water-side electrode part to cooling water in the process of conversion to water particles in the jetting space to charge the jetted water particles. Characteristic charge spray head.

In addition, the present invention provides a charging spray head that charges a cooling water spray water and sprays the cooling target space .
Is connected to a pipe for supplying the cooling water, a spray nozzle for spraying is converted into water particles by ejecting cooling water to the outside of the injection space,
An induction electrode portion disposed in the ejection space;
A water-side electrode unit that is arranged using a conductive material on the side of the piping connected to the spray nozzle and contacts the cooling water supplied to the spray nozzle;
A rubber valve member with a slit that opens when cooling water is supplied, and closes when the cooling water supply is stopped, is placed inside the spray nozzle, and when the cooling water is not supplied, the injection nozzle A water leakage prevention valve for preventing water leakage from the
With
The external electric field generated by applying a charging voltage between the induction electrode unit and the water-side electrode unit, is applied to the cooling water in the conversion process in the injection space into water particles, Turkey charges the injected water particles And features.

  The induction electrode portion of the charging spray head is any one of a metal having conductivity, a resin having conductivity, or a rubber having conductivity, and a ring shape, a cylindrical shape, a vertical plate shape, a parallel plate shape, The shape is either a linear shape or a wire mesh shape.

The charging spray head applies a predetermined charging voltage to the induction electrode unit by setting the voltage of the water side electrode unit to zero volts and dropping it to the ground. A DC voltage between 0.3 kV and 20 kV is applied to the induction electrode part. The spray nozzle sprays spray water having an average particle size of 100 μm or less.

  According to the present invention, by charging the spray water from the charging spray head, the amount of adhesion to human skin is increased by the Coulomb force, and the refreshing feeling can be enhanced.

  In addition, each water particle sprayed in the space is charged, so repulsive force acts between the water particles, and the probability of colliding and growing and falling is small, so that the water particles staying in the space increase and the spray water is mixed. The apparent specific gravity of the air increases more than when it is not charged, and the cooling effect is increased by suppressing the tendency to dissipate upward.

Furthermore, by negatively charging the spray water from the charging spray head, it is possible to create a state similar to the Leonard effect that is said to occur in a so-called natural waterfall, and to increase the refreshing feeling. .

Explanatory drawing which showed embodiment of the spray cooling equipment by this invention Explanatory drawing which took out and showed the spray cooling area A of FIG. Explanatory drawing which showed embodiment of the charging spray head using a ring-shaped induction electrode part Explanatory drawing which showed other embodiment of the charging spray head using a cylindrical induction | guidance | derivation electrode part. Explanatory drawing which showed other embodiment of the charging spray head using a wire-mesh induction electrode part. Explanatory drawing which showed other embodiment of the charging spray head using a parallel plate induction electrode part. Explanatory drawing which showed other embodiment of the charging spray head using a needle-shaped induction electrode part.

FIG. 1 is an explanatory view showing an embodiment of a spray cooling facility according to the present invention. In FIG.
The spray cooling areas A and B are cooling target spaces such as an open space through which a person passes, and are charged above the spray cooling areas A and B, for example, at a height that does not hinder human traffic. A spray head 10 is installed.

  A pipe 16 is connected to the charging spray head 10 from the discharge side of a pump unit 12 installed as a cooling water supply facility via a manual valve (gate valve) 14 and a remote on-off valve 22c. It is connected to the charging spray head 10 installed in each of the spray cooling areas A and B via the remote on-off valves 22a and 22b.

  An environmental sensor 18 is installed in each of the spray cooling areas A and B, and is connected to the system control panel 20 by a signal line. The environmental sensor 18 measures the temperature, humidity, rainfall, wind speed, etc. in the spray cooling areas A and B and transmits them to the system control panel 20.

  Remote on / off valves 22a to 22d are further connected to the system control panel 20 through signal lines, and can be controlled remotely. While the spray cooling equipment is stopped, the system control panel 20 closes the remote on-off valves 22a to 22c and opens the remote control valve 22d.

  Further, when spray cooling is started, the system control panel 20 controls to close the drain-side remote control valve 22d and opens the remote control valves 22a to 22c, and simultaneously activates the pump unit 12 to cool the charged spray head 10. Supply water under pressure.

  FIG. 2 is an explanatory view showing the spray cooling area A in FIG. A charging spray head 10 is installed at a high position in the spray cooling area A. A pipe 16 from the pump unit 12 shown in FIG. 1 is connected to the charging spray head 10 via a remote on-off valve 22a.

  In addition, a voltage application unit 15 is installed on the upper part of the charging spray head 10, and as will be clarified later, a spray applied from the charging spray head 10 by applying a predetermined voltage to the charging spray head 10. The water is charged so that it can be sprayed.

  FIG. 3 shows an embodiment of the charging spray head 10 shown in FIGS. 1 and 2, and this embodiment is characterized in that a ring-shaped induction electrode portion is used.

  In FIG. 3A, the charging spray head 10 has a head main body 36 screwed and fixed to the tip of a falling pipe 34 connected to the pipe from the pump unit 16. A cylindrical water-side electrode portion 40 is incorporated inside the front end of the head main body 36 via an insulating member 41.

  As shown in FIG. 2, the ground cable 50 is drawn from the voltage application unit 15 installed at the upper portion of the water side electrode unit 40 and installed inside the head main body 36 via the fixing member 43. It is connected to the water side electrode part 40. With the connection by the ground cable 50, the water-side electrode unit 40 has an applied voltage of 0 volts and is dropped to the ground side.

  A spray nozzle 38 is provided below the water-side electrode unit 40. The spray nozzle 38 includes a nozzle rotor 38a provided inside the water-side electrode unit 40 and a nozzle head 38b provided on the tip side.

  The spray nozzle 38 receives the cooling water supplied from the pump unit 12 of FIG. 1 from the falling pipe 34, passes the nozzle body 38a and sprays the cooling water to the outside from the nozzle head 38b. Convert to fine water particles and spray. In the present embodiment, the spray water from the spray nozzle 38 is spray water having an average particle size of 100 μm or less.

  A cover 42 made of an insulating material is fixed to the spray nozzle 38 with a screw through a fixing member 43. The cover 42 is a substantially cylindrical member, and a ring-shaped induction electrode portion 44 is incorporated into the lower opening by screwing a stopper ring 46.

  As shown in FIG. 3B, the ring-shaped induction electrode portion 44 has an opening 44a through which the spray particles from the spray nozzle 38 pass at the center of the ring-shaped main body.

For ring induction electrode unit 44 disposed below the cover 42, the upper portion of the voltage applied cable 48 from the voltage application unit 15 shown in FIG. 2 is drawn out, the voltage application cable 48 made of an insulating material covering 42 is connected to the ring-shaped induction electrode portion 44 so that a voltage can be applied.

  Further, a water leakage prevention valve 45 is incorporated between the tip of the falling pipe 34 and the water side electrode portion 40. As shown in FIGS. 3C and 3D, the water leakage prevention valve 45 is a rubber valve member, and a slit 45a is formed in the center of the disk-shaped rubber member.

  When spraying the cooling water, the water leakage prevention valve 45 is bent and deformed due to the supply of pressurized cooling water, thereby opening the slit 45a and allowing the cooling water to pass. On the other hand, when spraying of cooling water is stopped, the slit 45a is closed, thereby preventing dripping of the cooling water remaining on the pipe side.

  Here, as the water-side electrode portion 40 and the ring-shaped induction electrode portion 44 used in the charging spray head 10 of the present embodiment, in addition to conductive metal, conductive resin, conductive rubber Or a combination thereof.

  When spraying the cooling water from the charging spray head 10, the voltage application unit 15 shown in FIG. 2 operates in accordance with a control signal from the system control panel 20 shown in FIG. 1, and the water-side electrode unit 40 becomes 0 volts. A predetermined DC applied voltage between 0.3 kV and 20 kV is applied to the ring-shaped induction electrode portion 44 on the ground side.

  Thus, when a voltage of, for example, several kilovolts is applied between the water-side electrode portion 40 and the ring-shaped induction electrode portion 44, an external electric field is generated between the electrodes due to this voltage application, and cooling water is supplied from the spray nozzle 38. The sprayed particles are charged through the spraying process converted into the sprayed particles, and the charged sprayed particles can be sprayed to the outside.

  Next, the monitoring operation in the embodiment of FIG. 1 will be described. When the system control panel 20 determines that the cooling start time set by a timer has been reached, for example, the remote control valve 22d on the drain side is closed and the remote control valves 22a to 22c are opened, and the pump unit 12 is started at the same time. Then, cooling water from the water source is pressurized and supplied to the pipe 16.

  In addition to the time setting by the timer, activation by the system monitoring panel 20 is performed based on measurement data such as temperature, humidity, rainfall, and wind speed from the environment sensor 18 that is manually operated by an administrator and installed in the spray cooling areas A and B. It may be automatic activation when the activation condition is obtained.

  The system control panel 20 sends an activation signal to the voltage application unit 15 provided in the charging spray head 10 shown in FIG. 2 simultaneously with the pressurization and supply of cooling water by the activation of the pump unit 20. The application unit 15 supplies a DC application voltage of, for example, several kilovolts to the charging spray head 10.

  For this reason, in the charging spray head 10 shown in FIG. 3A, the ground cable 50 is connected when the cooling water pressurized from the spray nozzle 38 is sprayed by being converted into sprayed particles. A voltage of several kilovolts is applied to the ring-shaped induction electrode portion 44 side to which the voltage application cable 48 is connected with the water side electrode portion 40 set to 0 volt, and an external electric field generated by this voltage application is sprayed from the spray nozzle 38. Then, the sprayed particles converted by the spraying can be charged and sprayed by being applied to the cooling water in the spraying process passing through the opening 44a of the ring-shaped induction electrode part 44.

  As shown in FIG. 2, the water particles sprayed from the charging spray head 10 toward the spray cooling area A are charged with water particles, and therefore the human skin that passes through the area by the Coulomb force due to charging. Highly refreshing feeling can be obtained by removing the heat of vaporization when adhering to the skin efficiently and evaporating on the skin.

  Further, in the charging spray head 10 of FIG. 3A, for example, when the water-side electrode portion 40 is set to 0 volts and a positive DC voltage is applied to the ring-shaped induction electrode portion 44, the sprayed water The particles are only charged with a negative charge. In this way, when spraying water particles charged only to a negative charge, repulsive force works between the charged water particles in the space, thereby reducing the probability that the water particles collide and grow and fall. The density of water particles staying in the space is increased, and the apparent specific gravity of the air mixed with the spray water is increased from that when not charged, and the cooling effect is increased by suppressing the tendency to dissipate upward.

  Further, by negatively charging the spray water from the charging spray head 10, it is possible to create a state similar to the Leonard effect that is said to occur in a so-called natural waterfall, and to increase the refreshing feeling. it can.

  FIG. 4 is an explanatory view showing another embodiment of a charging spray head using a cylindrical induction electrode portion. 4A, in the charging spray head 10 of this embodiment, a head main body 36 is screwed and fixed to the tip of a falling pipe 34, and a water-side electrode portion 40 is interposed inside the head main body 36 via an insulating member 41. The earth cable 50 is connected to the top from here.

  A spray nozzle 38 is disposed below the water-side electrode unit 40, and the spray nozzle 38 includes a nozzle body (rotor) 38a and a nozzle head 38b. A cylindrical cover 56 using an insulating material is attached to the outside of the lower portion of the nozzle head 38b via a fixing member 43. A cylindrical induction electrode portion 52 is disposed inside the opening of the lower end of the cover 56 by fixing the stopper ring 58 with screws.

  The cylindrical induction electrode portion 52 has a through hole 54 formed inside the cylindrical body, as shown in a plan view taken out in FIG. An applied voltage for charging is supplied to the cylindrical induction electrode portion 52 by passing through a cover 56 made of an insulating material and connecting to the voltage application cable 48.

  A water leakage prevention valve 45 is incorporated between the tip of the falling pipe 34 and the water-side electrode portion 40, and the water leakage prevention valve 45 is made of rubber as shown in FIGS. 3C and 3D. It is a valve member, and a slit 45a is formed at the center of a disk-shaped rubber member.

  Even in the charging spray head 10 using the cylindrical induction electrode portion 52, the water side electrode portion 40 is set to 0 volt when spraying water particles by spraying the cooling water pressurized from the spray nozzle 38. For example, a voltage of several kilovolts is applied to the cylindrical induction electrode portion 52, and the water particles emitted from the spray nozzle 38 pass through the space of the through hole 54 of the cylindrical induction electrode portion 52 in which an external electric field is generated. The charged water particles can be sprayed by charging in the spraying process.

  FIG. 5 is an explanatory view showing another embodiment of the charging spray head using the wire mesh induction electrode portion. In the electrification spray head 10 of FIG. 5A, the head main body 36 is screwed and fixed to the lower part of the falling pipe 34, and the water-side electrode portion 40 is disposed therein via an insulating member 41. Is connected to the ground cable 50. A cover 62 using an insulating material is attached to the lower side of the spray nozzle 38 through a fixing member 43, and a wire mesh induction electrode portion 60 is attached to an opening inside the cover 62.

  The metal mesh induction electrode portion 60 has a planar shape shown in FIG. 8B and uses a metal wire mesh having a predetermined mesh. The cover 62 is made of an insulating material, and the voltage application cable 48 is connected through the bar 62 so that a voltage can be applied to the wire mesh induction electrode portion 60.

  A water leakage prevention valve 45 is incorporated between the tip of the falling pipe 34 and the water side electrode portion 40, and the water leakage prevention valve 45 is a rubber valve as shown in FIGS. 3C and 3D. The slit 45a is formed in the center of the disk-shaped rubber member.

  Even in the embodiment of FIG. 5, when the cooling water is sprayed from the spray nozzle 38 to be converted into water particles, the water side electrode portion 40 is set to 0 volts and the direct current voltage such as several kilovolts on the wire mesh induction electrode portion 60 side. Is applied to generate an external electric field in the spray space from the spray nozzle 38, and the charged particles passing therethrough are charged when passing through the opening of the wire mesh 62 to spray the charged water particles. it can.

  FIG. 6 is an explanatory view showing an embodiment of a charging spray head using a parallel plate induction electrode section. In the charging spray head 10 of FIG. 6, a spray nozzle 68 is fixed to the lower part of the falling pipe 34 with screws. In this embodiment, the water-side electrode portion uses the falling pipe 34 itself, and therefore the ground cable 50 is directly connected to the falling pipe 34 using the connection ring 66.

  A ring holder 70 made of an insulating material is fixed to the lower portion of the spray nozzle 68 with screws. A pair of plate-like holders 72a and 72b are suspended from the ring holder 70 in a cantilevered manner. They are arranged in parallel. Parallel plate induction electrode portions 74a and 74b are fixed to the inner relative surfaces of the holders 72a and 72b. The plan view seen from the lower side of the parallel plate induction electrode portions 74a and 74b is arranged in parallel as shown in FIG. 6 (B).

  The holders 72a and 72b are made of an insulating material, and branch cables 48a and 48b obtained by branching the voltage application cable 48 at the branch portion 76 are connected to the parallel plate induction electrode portions 74a and 74b through the holders 72a and 72b, respectively. Therefore, an applied voltage of several kilovolts is applied.

A water leakage prevention valve 45 is incorporated between the upper part and the lower part of the spray nozzle 68, and the water leakage prevention valve 45 is a rubber valve member as shown in FIGS. 3C and 3D. A slit 45a is formed in the center of the plate- like rubber member.

  Even in the charging spray head 10 of FIG. 6, when the cooling water is sprayed from the spray nozzle 68 and sprayed as spray particles, the falling pipe 34 serving as the water-side electrode portion and the parallel disposed parallel to the front end side. By applying a voltage of several kilovolts between the plate induction electrode portions 74a and 74b, an external electric field is generated in the space sandwiched between the parallel plate induction electrode portions 74a and 74b, and this external electric field is injected from the spray nozzle 68. The charged water particles can be charged in the process of passing the water particles, and the charged water particles can be sprayed.

  FIG. 7 is an explanatory view showing another embodiment of the charging spray head using the needle-like induction electrode portion. In the charging spray head 10 of FIG. 7A, the spray nozzle 68 is screwed and fixed to the tip of the falling pipe 34 used as the water-side electrode portion, and the connection ring 66 is attached to the falling pipe 34. The ground cable 50 is electrically connected.

  A ring holder 80 using an insulating material is attached to the tip end side of the spray nozzle 68 via a fixing member 43. A needle-like induction electrode portion 78 is attached to the lower part of the ring holder 80. The needle-like induction electrode portion 78 is bent in an inverted L shape, and has a needle shape with its tip bent obliquely toward the opening of the spray nozzle 68. A plan view seen from below is shown in FIG. It becomes like this.

  A voltage application cable 48 is electrically connected to the needle-like induction electrode portion 78 attached to the ring holder 80.

Between the upper part and the lower part of the spray nozzle 68, a water leakage prevention valve 45 is incorporated. As shown in FIGS. 3C and 3D, the water leakage prevention valve 45 is a rubber valve member. A slit 45a is formed in the center of the rubber member.

  Even in this embodiment, when water for cooling is sprayed from the spray nozzle 68 to be converted into water particles and sprayed, the falling pipe 34 functioning as the water-side electrode portion and the needle-shaped guide disposed on the nozzle tip side By applying a DC voltage such as several kilovolts between the electrode part 78, an external electric field is generated in the space between the nozzle opening and the tip of the needle-like induction electrode part 78, and this is injected from the spray nozzle 68. The sprayed particles are charged during the spraying process for converting into water particles, and can be sprayed as charged water particles.

  As the charging spray head 10 used in this embodiment, various structures shown in the above embodiment can be applied, but the invention is not limited to this, and a charging spray head having an appropriate structure can be used.

  In the above embodiment, a case where a DC charging voltage is applied to the charging spray head is taken as an example, but an AC or pulse charging voltage may be applied.

The present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Charge spray head 12: Pump unit 14: Manual valve 15: Voltage application unit 16: Pipe 18: Environmental sensor 20: System control panels 22a to 22d: Remote open / close valve 32: Automatic valve 34: Falling pipe 36: Head body 38: Spray nozzle 38a: Nozzle body 38b: Nozzle head 40: Water-side electrode part 41: Insulating members 42, 56, 62: Cover 43: Fixing member 44: Ring-shaped induction electrode part 45: Water leakage prevention valve 45a: Slit 46, 58, 674: Stopper ring 48: Voltage application cable 50: Earth cable 52: Cylindrical induction electrode 54: Through hole 60: Wire mesh induction electrode portion 66: Connection ring 70, 80: Ring holders 72a, 72b: Holders 74a, 74b : Parallel plate induction electrode part 76: Branch part 78: Needle-like induction electrode part

Claims (6)

In a charging spray head that charges a cooling water spray water and sprays it on a cooling target space .
A head body connected to a pipe for supplying the cooling water;
A spray nozzle that is connected to the head body and that sprays the water for cooling into water particles by spraying the water into an external spray space;
An induction electrode portion disposed in the ejection space;
A cylindrical water-side electrode portion that is disposed inside the head body and contacts the cooling water supplied to the spray nozzle;
A rubber valve member formed with a slit that opens when the cooling water is supplied and closes when the cooling water supply is stopped is disposed on the inflow side of the spray nozzle, and the cooling water is supplied. A water leakage prevention valve for preventing water leakage from the spray nozzle when not done,
With
An external electric field generated by applying a charging voltage between the induction electrode part and the water-side electrode part is applied to cooling water that is in the process of conversion into water particles in the jetting space to charge the jetted water particles. A charging spray head characterized by being made.

In a charging spray head that charges a cooling water spray water and sprays it on a cooling target space .
Which is connected to cooling water in the pipe for supplying a spray nozzle for spraying is converted into water particles by ejecting the cooling water to the outside of the injection space,
An induction electrode portion disposed in the ejection space;
A water-side electrode portion that is disposed using a conductive material on the side of the pipe that connects the spray nozzle, and that contacts the cooling water supplied to the spray nozzle;
A rubber valve member formed with a slit that opens when the cooling water is supplied and closes when the cooling water supply is stopped is disposed inside the spray nozzle, so that the cooling water is not supplied. A water leakage prevention valve for preventing water leakage from the spray nozzle in case
With
An external electric field generated by applying a charging voltage between the induction electrode part and the water-side electrode part is applied to cooling water that is in the process of conversion into water particles in the jetting space to charge the jetted water particles. A charging spray head characterized by being made.

3. The charging spray head according to claim 1 or 2, wherein the induction electrode portion of the charging spray head is one of a metal having conductivity, a resin having conductivity, a rubber having conductivity, or a composite. A charging spray head characterized by having a ring shape, a cylindrical shape, a vertical flat plate shape, a parallel plate shape, a linear shape, or a wire mesh shape.
3. The charging spray head according to claim 1, wherein the voltage of the water-side electrode portion is set to zero volts and dropped to the ground, and a predetermined charging voltage from the voltage applying portion is applied to the induction electrode portion. And charging spray head.
5. The charging spray head according to claim 4, wherein a DC voltage between 0.3 kV and 20 kV is applied to the induction electrode portion.
  3. The charging spray head according to claim 1, wherein the spray nozzle sprays spray water having an average particle diameter of 100 μm or less. 4.

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