JP2016048666A - Nozzle unit and destaticizing and dust removing device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a destaticizing and dust removing device that is not required to be supplied with power from the outside and can exert sufficient destaticizing function and dust removing function.SOLUTION: A destaticizing and dust removing device 1000 is not required to be power supplied from the outside, and has a power generation unit 1200 for generating power by using compressed air supplied from the outside, a discharging unit 1400 for ionizing air with corona discharge occurring by applying the generated power to an electrode (discharge needle 1430), and a nozzle unit 1300 for jetting the ionized air for destaticization and dust removal. In the destaticizing and dust removing device 1000, the compressed air supplied from the outside is divided into first compressed air which will flow through an air pipe 1020 before power generation and be supplied to the power generation unit 1200, and second compressed air which will flow through a duster air pipe 1030 and be supplied to the nozzle unit 1300 without passing through the power generation unit 1200.SELECTED DRAWING: Figure 5

Description

  In the present invention, ionized air (which may be referred to as air or compressed air) is injected from a nozzle using corona discharge generated by applying high-voltage AC power to a needle-like electrode (discharge needle). In particular, the present invention relates to a charge removal dust removal apparatus that does not require external power supply. Furthermore, it is related with the nozzle unit used suitably for various air equipment including such a static elimination dust removal apparatus especially.

  Conventionally, a gun type static eliminator provided with a high voltage generating circuit, a discharge part (including electrodes), a nozzle, an air passage, a valve for opening and closing the air passage, and a trigger for operating the valve on a gun-shaped main body Is known. Such a known gun type static eliminator uses a commercial power source as a power source, and is connected to a commercial power outlet via a cord or a high voltage cable via an AC-DC adapter or a power transformer. For this reason, it cannot be used where there is no commercial power outlet, and there is a problem that a cord or a high voltage cable obstructs the operation.

  In response to such a problem, Japanese Utility Model Publication No. 6-44098 (Patent Document 1) discloses a static elimination dust removal apparatus that can be used in a place where there is no commercial power supply and that has good operability and can be easily downsized. The static elimination dust removing apparatus disclosed in Patent Document 1 applies a high voltage generated by a high voltage generation circuit to an electrode of a discharge unit, sends air to the discharge unit through an air passage, and generates ions generated in the discharge unit. A gun-type static-eliminating and dust-removing device that injects air from a nozzle with a generator that feeds power to a high-voltage generation circuit, and air rotating fins (rotary blades and windmills) that drive the generator are rotated by the air passing through the air passage. It is characterized in that it is arranged in the air passage.

Japanese Utility Model Publication No. 6-044098

However, this static elimination dust removing device disclosed in Patent Document 1 has the following problems.
1st problem: In this static elimination dust removal apparatus, since the generator, the valve | bulb, and the nozzle were connected by the single flow path, and the air used for power generation was used as it is as the air for dust removal, The same flow of air flows through the machine and the nozzle. Despite the fact that the air flow rate suitable for power generation with a small amount of fluctuation and the rotational fins not over-rotating, the air flow rate suitable for dust removal whose flow rate varies depending on the dust removal target, and the required flow rate characteristics are different, the generator and nozzle Therefore, it is difficult to secure a necessary and sufficient flow rate for securing a stable power generation amount and / or dust removal, and to achieve a satisfactory charge removal effect and / or dust removal effect.

Second problem: In this static elimination dust removal device, when the trigger is pulled and the valve is opened, air from the air supply port is injected from the nozzle through the air passage, and at the same time, the rotating fins are caused by the pressure of the flowing air. The (rotary blade) rotates and is generated by the rotating electrical machine (generator). For this reason, in addition to the difficulty in securing a stable power generation amount as described above as a first problem, since power generation is performed for the first time after being injected from the nozzle, power generation and discharge are delayed and started to be injected from the nozzle. There is a possibility that the air is not ionized, and if the flow rate of air ejected from the nozzle is small, a sufficient power generation amount cannot be secured and the air may not be ionized. Furthermore, in order to solve this problem, it is conceivable to divide the air flow path into two systems, but in such a configuration, a switch (trigger, etc.) that provides two valves or opens and closes the two valves is provided. It is necessary to provide two of them, and new problems such as a reduction in operability of the apparatus and a decrease in the portability of the apparatus due to an increase in cost and an enlargement of the apparatus occur. The second problem is not limited to the static elimination dust removal device, but is an air device that uses two or more systems of air and is reduced in size to improve portability and operability. It is a common problem.

  Third problem: In this static elimination dust removal device, the air that rotates the rotor blades of the generator flows downward from above the static elimination dust removal device without changing the flow direction at the location where the generator is installed. Air flows toward and rotates the rotor blade connected to the rotating shaft of the generator. Moreover, in this static elimination dust removal apparatus, the figure which provided the mere axial flow type rotary blade as a rotary blade is only disclosed. In such a configuration, when high-pressure air suitable for dust removal is supplied, the peripheral speed ratio (peripheral speed / wind speed, which is the tip speed of the rotor blades) exceeds 1, and the rotational speed of the generator becomes excessively high. There is a possibility of lowering the mechanical durability. The third problem is not limited to the static elimination dust removal device, but has a mechanism for rotating the miniaturized rotating blades with high-pressure air in order to avoid an increase in the size of the entire device. It is a problem common to air equipment.

  Fourth problem: In order to solve the first problem and the second problem in the static elimination apparatus, it is conceivable to divide the air path into two systems as described above. Here, it may be difficult to ionize dust removal air having a large flow rate variation, and it may be preferable to ionize power generation air (and vice versa). However, if the power generation air is ionized, it must be merged with the dust removal air after ionization. However, depending on the dust removal target, the dust removal air has a large flow rate and the flow rate fluctuation is small, and the power generation is generally small. It can be assumed that the ionized air cannot be sufficiently combined with the dust-removing air by simply joining the working air. The fourth problem is not limited to the static elimination dust removal apparatus, but is a problem common to air devices using two or more systems of air.

And the present condition is that the elemental technology for solving such a problem is not developed. These elemental technologies are not only applied to static elimination dust removal equipment, but are widely applied to many pneumatic equipment using air pressure, including air tools (air drivers, air impact wrenches, air sanders, air grinders, air drills, etc.). The technology used.
In view of such problems, the present invention is a static elimination device that does not require external power supply, and sufficiently performs the static elimination function and the dust elimination function, and is small, low cost, and easy to operate. It aims at providing the nozzle unit used suitably for various air equipment including a dust remover.

In order to achieve the above-described object, the present invention takes the following technical means.
That is, the nozzle unit according to the present invention is a nozzle unit that combines two or more lines of compressed air having different flow velocities and ejects them, and the second nozzle ejects second compressed air that has a higher flow velocity than the first compressed air. And a first nozzle that is provided at a position upstream of the second nozzle tip and in the vicinity of the second nozzle and that ejects the first compressed air, and the second nozzle The first compressed air is sucked by the negative pressure generated by the second compressed air ejected from the first compressed air, and the first compressed air is ejected together with the second compressed air.

  A nozzle unit according to another aspect of the present invention is also a nozzle unit that joins and jets two or more systems of compressed air with different flow velocities, the first input hole into which the first compressed air flows, and the first compressed air A second input hole into which the second compressed air having a higher flow velocity flows, a first output hole from which the first compressed air is ejected, a second output hole from which the second compressed air is ejected, and the first input. A first pipe connecting the hole and the first output hole; and a second pipe connecting the second input hole and the second output hole. As the second output hole, a small-diameter nozzle hole for ejecting the second compressed air is provided at the tip of the second conduit, and the first pressure is generated by the negative pressure generated by the second compressed air ejected from the nozzle hole. A substantially cylindrical member through which one compressed air circulates is provided on the first output hole side with a gap between the inner diameter of the member and the outer diameter of the second conduit, and the member It arrange | positions so that the said nozzle hole may be exposed from the front-end | tip of this.

Preferably, the member is a cap that covers the first output hole side so as to cover the periphery of the distal end portion of the second pipe line on the distal end side thereof, and the first output hole serves as a cap of the cap. The first compressed air can flow along the inner wall and be ejected from the tip of the gap.
More preferably, the first pipe line may have a non-straight pipe shape, and the second pipe line may have a straight pipe shape.

More preferably, the cap has a hollow substantially truncated cone shape on the downstream side of the compressed air, and the second output hole has a solid substantially truncated cone shape on the downstream side of the compressed air, which is narrow. A plurality of small-diameter nozzle holes may be provided radially in the part.
More preferably, a plurality of grooves can be provided radially on the inner wall of the cap.

  The static elimination dust removal apparatus which concerns on this invention can be comprised so that the nozzle unit mentioned above may be provided.

  According to the present invention, it is a static elimination dust removing device that does not require external power supply, and exhibits various static elimination and dust elimination functions, including a static elimination function and a dust elimination function, and a small size, low cost, and excellent operability. It is possible to provide a nozzle unit that is suitably used for an air device.

It is a perspective view (the 1) of the static elimination dust removal apparatus concerning an embodiment of the invention. It is a perspective view (the 2) of the static elimination dust removal apparatus which concerns on embodiment of this invention. FIG. 3 is a three-side view (No. 1) of the charge-removing dust removing apparatus of FIGS. 1 and 2; FIG. 3 is a three-side view (No. 2) of the charge-removing dust removing apparatus of FIGS. 1 and 2. It is a functional block diagram of the static elimination dust removal apparatus of FIG. 1 and FIG. It is sectional drawing of the double valve | bulb of FIG. It is a figure for demonstrating operation | movement of the double valve | bulb of FIG. It is a side view of the electric power generation unit of FIG. FIG. 9 is a three-side view of the rotor blade of FIG. 8. It is a figure (the 1) of another rotary blade. It is a figure (the 2) of another rotary blade. It is a figure (the 3) of another rotary blade. It is sectional drawing of the nozzle unit of FIG. FIG. 14 is a partial perspective view of FIG. 13. FIG. 15 is a trihedral view of FIG. 14. It is the fragmentary sectional view and partial enlarged view of FIG. FIG. 14 is a three-side view and a sectional view of the cap of FIG. 13. FIG. 3 is a diagram (No. 1) for explaining the operation of the static elimination dust removing apparatus of FIG. 1 and FIG. 2; FIG. 3 is a diagram (No. 1) for explaining the operation of the static elimination dust removing apparatus of FIG. 1 and FIG. 2;

Hereinafter, the static elimination apparatus 1000 including the nozzle unit 1300 according to the embodiment of the present invention will be described in detail with reference to the drawings. Since the nozzle unit according to the present invention can be suitably used for various types of air equipment other than such a static elimination dust removal apparatus 1000, the static elimination dust removal apparatus is only an example of an application example.
[Overall structure of static elimination device]
First, about the whole structure of the static elimination dust removal apparatus 1000 which concerns on embodiment of this invention, the perspective view of this static elimination dust removal apparatus 1000 shown in FIG.1 and FIG.2, and the three-plane figure of this static elimination dust removal apparatus 1000 shown in FIG.3 and FIG.4. In addition, a description will be given with reference to a functional block diagram of the static elimination apparatus 1000 shown in FIG. This static elimination dust removal device 1000 is a small gun type static elimination dust removal device with good operability and portability, but the present invention is a stationary type (nozzle type and bar type) static elimination dust removal device. For example, you may have the valve unit 1100 which concerns on this Embodiment in the exterior of the static elimination dust removal apparatus 1000.

1 to 4 show a perspective view and a three-sided view of the static elimination dust removal apparatus 1000 in which the outer case covering the whole static elimination dust removal apparatus 1000 is removed in order to easily understand the internal structure. It is shown in an embodiment.
This charge removal dust removal apparatus 1000 is a charge removal dust removal apparatus that does not require external power supply. In general, the charge removal dust removal apparatus 1000 generates power using compressed air supplied from the outside, and generates power using electrodes ( The discharge unit 1400 includes a discharge unit 1400 that ionizes air using a corona discharge generated by applying to the discharge needle 1430), and a nozzle unit 1300 that ejects ionized air for discharging and dust removal. In this static elimination dust removal apparatus 1000, the compressed air supplied from the outside flows through the pre-power generation air pipe 1020 and the first compressed air supplied to the power generation unit 1200 and the duster air pipe 1030 and passes through the power generation unit 1200. The second compressed air is supplied to the nozzle unit 1300 without being divided.

  Further, what is characteristic is that the static elimination dust removing device 1000 includes a first air pipe (a pre-power generation air pipe 1020 and a post-power generation air pipe 1040) through which the first compressed air flows, and a second air through which the second compressed air flows. And the first air pipe and the second air pipe are branched at the valve unit 1100 on the upstream side of the compressed air from the power generation unit 1200 and compressed more than the power generation unit 1200. In the nozzle unit 1300 on the downstream side of the air, the first air pipe and the second air pipe are merged.

  Further, the discharge dust removal apparatus 1000 is characterized by the discharge needle 1430 of the discharge unit 1400 on the upstream side of the compressed air from the nozzle unit 1300 where the first air pipe and the second air pipe merge. One compressed air is ionized. Note that what is ionized by the discharge needle 1430 of the discharge unit 1400 is not limited to only the first compressed air, and at least one of the first compressed air and the second compressed air may be ionized.

Further, what is characteristic is that in this static elimination dust removing apparatus 1000, the fluctuation amount of the first compressed air is smaller than the fluctuation amount of the second compressed air. Further, what is characteristic is that the flow rate of the second compressed air changes according to the operation amount of the operation unit 1110 by the user. Details of these will be described later.
Hereinafter, the detailed structure (elemental technology) of the static elimination dust removing apparatus 1000 having such characteristics will be described separately for the valve unit 1100, the power generation unit 1200, the nozzle unit 1300, and the discharge unit 1400.

[Valve unit structure]
Next, regarding the structure of the valve unit 1100 of this static elimination dust removal apparatus 1000, in addition to FIGS. 1 to 5, a sectional view of the dual valve 1120 shown in FIG. 6 and the operation of the dual valve 1120 shown in FIG. Will be described with reference to the drawings. As shown in these drawings, the valve unit 1100 is generally composed of a dual valve 1120 having one input and two outputs and an operation unit 1110 for operating the dual valve 1120. Reference numeral 1110 denotes a double action trigger (an outer first trigger 1112 and an inner second trigger 1114) operated by the user.

The double valve 1120 constituting the valve unit 1100 includes one input port 1024 and two output ports (a first output port 1026 and a second output port 1028). Note that the number of output ports may be three or more as long as the following features are provided.
The dual valve 1120 includes an input line 1124 connected to the input port 1024, a first output line 1126 connected to the first output port 1026, and a second line connected to the second output port 1028. An output line 1128, a first valve body 1150 that communicates and blocks the input line 1124 and the first output line 1126 by a user's operation, and the input line 1124 and the first output line by the first valve body 1150. After the transition from the blocked state to the connected state, the input line 1124 and the second output line 1128 are communicated and blocked so that the flow rate linked to the operation amount by the user's operation flows. And a two-valve body 1160.

Further, what is characteristic is that in this double valve 1120, the second valve body 1160 has an input such that the operation amount by the user's operation and the flow rate in the second output pipe 1128 have a substantially proportional relationship. The pipe line 1124 and the second output pipe line 1128 are communicated.
Further, it is characteristic that the double valve 1120 has a first valve so that the flow rate in the first output line 1126 does not decrease when the flow rate in the second output line 1128 increases by the user's operation. It further includes a needle piston 1140 as an adjustment mechanism that increases the flow rate passing through the body 1150 and suppresses the fluctuation amount of the flow rate in the first output line 1126. Here, as an example in which a phenomenon that the flow rate in the first output pipeline 1126 decreases when the flow rate in the second output pipeline 1128 increases by the user's operation, the pipe diameter of the first output pipeline 1126 and Such a static elimination dust removing device which is a case where the pipe diameter of the input pipe line 1124 is not sufficiently large with respect to the pipe diameter of the second output pipe line 1128 and which is miniaturized in order to improve operability and portability. 1000 is a phenomenon that usually occurs.

Further, it is characteristic that a needle piston 1140 as an adjustment mechanism in the double valve 1120 is linked to the pressure fluctuation in the input pipe line 1124 and the first output pipe line 1126 via the first valve body 1150. Increase the flow rate to
Details of the valve unit 1100 having such characteristics will be described below.
The operation unit 1110 of the valve unit 1100 is configured by a double action trigger (an outer first trigger 1112 and an inner second trigger 1114). By pulling the first trigger 1112, the dual valve 1120 The first valve body 1150 makes a transition from a state where the input pipe line 1124 and the first output pipe line 1126 are blocked to a connected state. Further, by pulling the second trigger 1114 together with the first trigger 1112 (at this time, the first trigger 1112 and the second trigger 1114 overlap and integrate), the second valve body 1160 of the double valve 1120 From the state where the input line 1124 and the second output line 1128 are blocked, the state transits to a state where the flow is linked to the operation amount by the user's operation.

  Then, by returning the second trigger 1114 (at this time, the first trigger 1112 and the second trigger 1114 are overlapped and integrated, so the second trigger 1114 is returned together with the first trigger 1112). By the second valve body 1160 of the dual valve 1120, the input pipe 1124 and the second output pipe 1128 are switched from the connected state to the blocked state, and the first trigger 1112 is returned. The first valve body 1150 of the dual valve 1120 makes a transition from a state where the input pipe line 1124 and the first output pipe line 1126 are communicated to a state where it is shut off.

Next, the dual valve 1120 of the valve unit 1100 will be described.
A predetermined pressure (about 0.1 to 1.2 MPa, preferably about 0.2 to 0.6 MPa) is applied to the input port 1024 of the dual valve 1120 from the air hose 1010 connected to the air pipe connection port 1012. Compressed air is supplied. A pre-power generation air pipe 1020 is connected to the first output port 1026, and a duster air pipe 1030 is connected to the second output port 1028.

  The pipeline structure on the first compressed air side is as follows. The input pipe line 1124 connected to the input port 1024 branches to a first series pipe line 1122 on the needle piston 1140 side as an adjustment mechanism on the downstream side of the input port 1024. The input pipe line 1124 branches to the second communication pipe line 1130 on the needle piston 1140 side and the first valve body 1150 side further downstream of the input port 1024. The second communication conduit 1130 is connected to a third communication conduit 1132 that houses the tip tapered portion 1148 of the needle piston 1140, and the third communication conduit 1132 is connected to the distal end 1152 of the first valve body 1150 and the second communication conduit 1132. The double valve body 1160 is connected to a first storage pipe 1134 that stores a rear end portion 1164 of the double valve body 1160. When the first valve body 1150 is opened, compressed air flows from the first storage pipe 1134 to the first output pipe 1126, and the input pipe 1124 and the first output pipe 1126 are communicated from a blocked state. Transition to the state.

  Moreover, the pipeline structure on the second compressed air side is as follows. The input conduit 1124 connected to the input port 1024 is connected to the second storage conduit 1135 that stores the neck 1165 of the second valve body 1160 further downstream of the second communication conduit 1130. When the second valve body 1160 is opened, compressed air flows from the second storage pipe line 1135 to the second output pipe line 1128, and the input pipe line 1124 and the second output pipe line 1128 are communicated from the blocked state. Transition to the state.

  The first valve body 1150 includes a front end portion 1152 and a rear end portion 1154 connected by a neck portion 1155, and the side wall 1158 of the rear end portion 1154 and the side wall 1156 of the front end portion 1152 do not leak compressed air. The first valve body 1150 is movable in the left-right direction in FIG. 6 by sliding on the inner wall of the double valve 1120. 7A, when the first valve body 1150 moves to the right in FIG. 6, a gap is formed between the neck portion 1155 and the inner wall 1170 of the dual valve 1120, and the first valve body 1150 moves to the right. The valve body 1150 is opened.

As shown in FIG. 7A, when the first valve body 1150 is opened, the compressed air introduced into the input conduit 1124 is supplied to the second communication conduit 1130, the third communication conduit 1132 and the first communication conduit 1132. It flows through the storage line 1134 to the first output line 1126.
The second valve body 1160 includes a front end portion 1162 and a rear end portion 1164 that are connected by a neck portion 1165. A tapered side wall 1166 of the neck portion 1165 does not leak compressed air, and the inner wall of the double valve 1120 can be removed. By sliding, the second valve body 1160 is movable in the left-right direction in FIG. 7B, when the second valve body 1160 moves rightward in FIG. 6, a gap is formed between the tapered side wall 1166 of the neck portion 1165 and the tapered inner wall 1180 of the dual valve 1120. As a result, the second valve body 1160 is opened.

As shown in FIG. 7B, when the second valve body 1160 is opened, the compressed air introduced into the input conduit 1124 passes through the second storage conduit 1135 to the second output conduit 1128. Flowing.
The gap between the front end of the first valve body 1150 and the rear end of the second valve body 1160 is a distance as shown in FIG. 6 when the operation portion 1110 is not operated (that is, the first valve body 1150 is closed). The distance D is open, and this distance D is determined by pulling the first trigger 1112 in the double action trigger (the first trigger 1112 and the second trigger 1114) as the operation unit 1110. It corresponds to the distance of contact (the outer first trigger 1112 and the inner second trigger 1114 overlap and integrate). That is, by pulling the outer first trigger 1112, the first valve body 1150 of the dual valve 1120 moves to the right in FIG. 6, and the outer first trigger 1112 is moved to the inner second trigger. When abutting on 1114, the tip of the first valve body 1150 of the dual valve 1120 and the rear end of the second valve body 1160 abut (distance D = 0).

  Further, by pulling the second trigger 1114 together with the first trigger 1112, the first valve body in a state where the front end of the first valve body 1150 of the dual valve 1120 and the rear end of the second valve body 1160 are in contact with each other. 1150 pushes the second valve body 1160, the first valve body 1150 and the second valve body 1160 of the dual valve 1120 both move rightward in FIG. 6, and the first valve body 1150 remains open. When the second valve body 1160 moves rightward in FIG. 6, a gap is formed between the tapered side wall 1166 of the neck portion 1165 and the tapered inner wall 1180 of the dual valve 1120, and the second valve body 1160 is opened. become.

  In this case, the taper side wall 1166 increases as the amount of movement of the second valve body 1160 in the right direction in FIG. 6 increases due to the taper side wall 1166 of the neck 1165 and the taper inner wall 1180 of the dual valve 1120 in the second valve body 1160. And the taper inner wall 1180 become larger, the flow rate of the compressed air in the second output line 1128 flows in conjunction with the operation amount by the user's operation. The tapered side wall 1166 and the tapered inner wall 1180 are tapered so that the flow rate of the compressed air in the output line 1128 exhibits a substantially proportional relationship.

It should be noted that a flow rate that is linked to the operation amount by the user's operation only has to flow (if the amount of pulling the second trigger 1114 is large, the flow rate of compressed air in the second output line 1128 is large, and the second trigger 1114 is pulled. If the amount is small, the flow rate of the compressed air in the second output line 1128 is small), and the present invention is not limited to the one that expresses a substantially proportional relationship.
Next, when the second valve body 1160 is in an open state as shown in FIG. 7B, when the flow rate in the second output line 1128 increases, the flow rate in the first output line 1126 does not decrease. A needle piston 1140 as an adjustment mechanism that increases the flow rate passing through the first valve body 1150 and suppresses the fluctuation amount of the flow rate in the first output pipe 1126 will be described.

  This needle piston 1140 is composed of a body part 1142, a lower end part 1144 and a tip tapered part 1148, and the sliding part 1143 of the body part 1142 and the sliding part 1145 of the lower end part 1144 do not leak compressed air. It slides on the inner wall of the double valve 1120 (which functions as a cylinder for the needle piston 1140) and moves up and down in FIG.

  The needle piston 1140 is pushed up by a first spring 1136 and a second spring 1138, which will be described later, and the needle piston 1140 is moved upward and held in FIG. In this state, a gap between the tip tapered portion 1148 and the third communication conduit 1132 is opened, and when the first valve body 1150 is opened as shown in FIG. It flows to the first output line 1126.

The rear end surface of the lower end portion 1144 receives the pressure of compressed air in the first series passage 1122, and when the pressure of the compressed air in the first series passage 1122 decreases, the pushing force by the first spring 1136 and the second spring 1138 Against this, as shown in FIG. 7C, the needle piston 1140 moves downward in FIG.
The tip tapered portion 1148 of the needle piston 1140 is coupled with the structure of the third communication pipe 1132 (this is not a tapered shape), and the tip of the needle piston 1140 moves downward in FIG. The gap between the tapered portion 1148 and the third communication conduit 1132 increases, and the gap between the tip tapered portion 1148 and the third communication conduit 1132 becomes narrower as the needle piston 1140 moves upward.

As described above, the needle piston 1140 moves downward against the first spring 1136 and the second spring 1138 in response to the pressure drop of the compressed air in the first series passage 1122. In this case, a push-up force by the first spring 1136 and the second spring 1138 acts on the needle piston 1140.
The first spring 1136 generates a force that pushes up the needle piston 1140 in order to balance the force that pushes down the needle piston 1140 due to the pressure drop of the compressed air in the first series passage 1122, and the first series passage 1122. The amount of movement of the needle piston 1140 in the vertical direction with respect to the pressure fluctuation of the compressed air is adjusted.

  However, if only a force that pushes up the needle piston 1140 is generated only by the first spring 1136, the pressure of the compressed air in the first series passage 1122 recovers (rises) and pushes up the needle piston 1140. Even if the above occurs, static friction between the sliding portion 1143 of the body portion 1142 and the sliding portion 1145 of the lower end portion 1144 and the inner wall of the dual valve 1120 (the cylinder with respect to the needle piston 1140) The needle piston 1140 does not move quickly upward in FIG. That is, when the needle piston 1140 is about to move, the linear characteristic between the first spring 1136 and the amount of fluctuation of the compressed air cannot be maintained by this static friction. For this reason, the second spring 1138 always generates a weak force that pushes up the needle piston 1140 to reduce static friction and maintain the linear characteristic of the amount of fluctuation in the compressed air and the amount of vertical movement of the needle piston 1140. doing.

The present invention can express a linear characteristic between the amount of fluctuation of the compressed air in the first series passage 1122 and the amount of movement of the needle piston 1140 in the vertical direction, and increases or decreases the flow rate passing through the first valve body 1150. As long as the fluctuation amount of the flow rate in the first output pipe 1126 can be suppressed, the configuration is not limited to the above.
In the dual valve 1120 of the valve unit 1100 having such a configuration, the first valve body 1150 and the second valve body 1160 shown in FIG. 6 are closed, and the first valve body 1150 shown in FIG. State and the second valve body 1160 are closed, the first valve body 1150 and the second valve body 1160 shown in FIG. 7B are open, the first valve body 1150 and the second valve body shown in FIG. When 1160 is open, the pressure of the compressed air in the first series passage 1122 decreases, the needle piston 1140 moves down, the flow rate of compressed air passing through the needle piston 1140 and the first valve body 1150 increases, Compressed air flow in the pipe line 1122 recovers (rises) and the needle piston 1140 rises and passes through the needle piston 1140 and the first valve body 1150 State but or no longer increases, operates in four aspects of.

  The compressed air that has flowed to the first output pipe 1126 through the first valve body 1150 flows to the input port 1214 of the power generation unit 1200 via the pre-power generation air pipe 1020 connected to the first output port 1026. The compressed air flowing through the second valve body 1160 to the second output pipe 1128 passes through the duster air pipe 1030 connected to the second output port 1028 to the second input hole 1318 of the nozzle unit 1300. Flowing.

[Structure of power generation unit]
Next, regarding the structure of the power generation unit 1200 of this static elimination dust removal apparatus 1000, in addition to FIGS. 1 to 5, a side view of the power generation unit 1200 shown in FIG. 8, a three-side view of the rotary blade shown in FIG. This will be described with reference to FIG. As shown in these drawings, the power generation unit 1200 generally includes a rotor blade 1220 housed in a housing case 1210 connected to a pre-power generation air pipe 1020 and a post-power generation air pipe 1040, and a generator case. It is comprised from the generator 1290 which is the rotary electric machine accommodated in 1280. As shown in FIG.

  The power generation unit 1200 includes an input port 1214 through which compressed air flows, an output port 1218 through which compressed air flows out, a housing case 1210 through which the compressed air flows, and an input port 1214 and an output port 1218. It includes a rotary blade 1220 housed in a housing case 1210 and rotated by compressed air to form a drag type wind turbine, and a generator connected to the rotary shaft of the rotary blade 1220 and generating electrical energy. A pre-power generation air pipe 1020 is connected to the input port 1214, and a post-power generation air pipe 1040 is connected to the output port 1218.

In this housing case 1210,
(1) The compressed air flowing in from the input port 1214 side is changed in flow direction by approximately 90 degrees and flows out to the output port 1218 side.
(2) The rotation axis is configured to be perpendicular to the flow direction of the compressed air.

It should be noted that the input port 1214 side and the output port 1218 side may be blocked by the housing case 1210 (more specifically, the housing inner wall 1216 (upper side) of the housing case 1210) and the rotary blade 1220. No (reverse rotation suppression by not passing air A described later).
Further, what is characteristic is that the peripheral speed ratio (peripheral speed which is the tip speed of the rotary blade 1220 / flow velocity of compressed air) does not exceed 2 in the power generation unit 1200.

Further, what is characteristic is that a rotating blade 1220 in the power generation unit 1200 has a plurality of blades 1222 having a curved surface standing on a rotating disk 1224. The rotating disk 1224 is not limited to the one having a plane perpendicular to the rotation axis.
Further, what is characteristic is that in this power generation unit 1200, the pressure of the compressed air is 0.1 to 1.2 MPa, the flow rate is 50 to 600 liters / minute, and the radius of the rotating disk is 5 to 50 mm. In some cases, the rotational speed of the rotating shaft is 50000 rpm or less.

  Preferably, in this power generation unit 1200, when the pressure of compressed air is 0.2 to 0.6 MPa, the flow rate is 50 to 200 liters / minute, and the radius of the rotating disk is 20 to 40 mm, The rotation speed of a rotating shaft is 20000-40000 rpm. Here, as for the rotational speed of the rotating shaft, an optimal rotational speed is appropriately set within the above-described range depending on the characteristics of the adopted rotating electrical machine (generator 1290).

Details of the power generation unit 1200 having such characteristics will be described below.
The power generation unit 1200 uses the high-pressure compressed air to reduce a small rotary blade while suppressing over-rotation and not reducing the rotation efficiency. Is provided.
The air flowing in from the input port 1214 side is changed in flow direction by approximately 90 degrees and flows out to the output port 1218 side, so that the blade 1222 of the rotary blade 1220 receives the kinetic energy of the compressed air in the region 1212 of FIG. The energy is converted into the rotational energy of the rotary blade 1220.

First, a description will be given of the point of rotating the rotating blade 1220 in the power generation unit 1200 with high efficiency (without reducing the rotation efficiency) and suppressing reverse rotation.
As shown in FIG. 8, in the power generation unit 1200, when high-pressure compressed air (compressed air of relatively high pressure up to about 1.2 MPa) is introduced into the small housing case 1210 and the rotor blades 1220, the hatched lines in FIG. An unexpected turbulent flow is generated in a region 1213 in the rotary blade 1220 shown in FIG. 2, and the turbulent flow flows downstream to generate a turbulent flow T. Due to this turbulent flow T, air A indicated by arrow A and air B indicated by arrow B in the opposite direction to the original flow (main flow from the input port 1214 to the output port 1218) in the power generation unit 1200 are generated. In order to suppress the reverse rotation without reducing the rotation efficiency, the pressure of the compressed air (main flow) introduced is preferably the pressure of the air B >> the pressure of the air A. In the configuration shown in FIG. 8, 1/4 of the plurality of rotor blades 1220 is applied with a force in the reverse rotation direction, and the other 3/4 is applied with a force in the forward rotation direction. In the region where the air B is acting, the air B generated after passing through the rotary blade 1220 joins the input air (main flow) flowing in from the input port 1214, thereby further rotating in the forward rotation direction. Strengthen.

  In this way, in this power generation unit 1200, 1/4 of the rotor blades 1220 receives a pressure directly from the compressed air, and the compressed air passing through the rotor blades 1220 becomes turbulent, but the direction opposite to the mainstream Force (air A, air B) is generated, but the air B of these is used for rotation in the forward rotation direction (however, the turbulent flow rate does not exceed the input air flow rate) Over-rotation).

  Next, a description will be given of the point that the rotating blade 1220 is rotated in the power generation unit 1200 so as not to be excessively rotated (over-rotation suppression). The over-rotation suppression is to prevent the rotation speed from being limited by the mechanical characteristics of the rotating electrical machine (generator). To suppress this excessive rotation, the flow rate variation of the first air by the valve unit 1100 is small and a constant flow rate, and the peripheral speed ratio is about 1 (when it exceeds 2, it rotates at twice the flow rate or more) The drag type wind turbine having the above configuration is configured such that the rotation axis of the rotor blade 1220 is perpendicular to the flow direction of the compressed air, and the Savonius rotor blade 1260 as shown in FIG. It is manifested as a function and effect due to the structure that receives air energy.

By suppressing over-rotation in this way, the peripheral speed ratio (peripheral speed which is the tip speed of the rotary blade 1220 / flow velocity of compressed air) does not exceed 2, and the pressure of the compressed air is 0.1 to 1.2 MPa. When the flow rate is 50 to 600 liters / minute and the radius of the rotating disk is 5 to 50 mm, the rotational speed of the rotating shaft is 50000 rpm or less.
Further, the housing inner wall 1216 (upper side) of the housing case 1210 and the tip of the blade 1222 of the rotor blade 1220 block the input port 1214 side and the output port 1218 side, and the output port 1218 side to the input port 1214 side is blocked. Backflow (air A) can be suppressed, contributing to suppression of reverse rotation.

  The first air flowing into the power generation unit 1200 has a constant flow rate as described in the valve unit 1100 by increasing or decreasing the flow rate passing through the first valve body 1150 by the needle piston 1140. This is because the fluctuation amount of the flow rate in the one output pipe 1126 is suppressed. Then, a stable and constant flow rate of compressed air flows into the power generation unit 1200, and in combination with the features (1) and (2) described above, stable and constant power can be generated. .

Referring to FIG. 9, on the surface of rotating blade 1220 (on the opposite side of generator 1290), eight blades 1222 are erected on rotating disk 1224, and blade 1222 has an end on the rotating shaft side at support portion 12.
26. The blade 1222 has a curved surface shape with good energy conversion efficiency. On the back surface of the rotating blade 1220 (the generator 1290 side), a rotating shaft support portion 1230 is erected at the center of the rotating disk 1224, and the rotating shaft is supported by four ribs 1228 erected on the back surface of the rotating disk 1224. Part 1230 is supported.

  10 is a diagram of a rotor blade 1240 in which the number of blades 1222 is changed from eight to six in the rotor blade 1220 of FIG. 9, and FIG. 11 is a curved surface shape of the blade in the rotor blade 1220 of FIG. FIG. 12 is a view of a rotor blade 1250 in which the curved surface shape of the blade in the rotor blade 1220 of FIG. 9 is changed to a shape similar to the Savonius type (different from the Savonius type curved surface shape). FIG.

In FIGS. 11 and 12, (A) is a reference rotation angle of 0 degree, (B) is 45 degrees from the reference rotation angle, (C) is 90 degrees from the reference rotation angle, and (D) is 135 degrees from the reference rotation angle. It shows the rotated state.
Each of the rotating blade 1220 shown in FIG. 9, the rotating blade 1240 shown in FIG. 10, the rotating blade 1250 shown in FIG. 11, and the rotating blade 1260 shown in FIG. 12 has a rotating disk 1224 having a plane perpendicular to the rotation axis. In addition, a plurality of blades having a curved surface shape are erected, and have the features (1) and (2) described above. The rotating disk 1224 is not limited to the one having a plane perpendicular to the rotation axis.

For example, as shown in FIG. 12C, for example, when the rotating blade 1260 rises at a position of 90 degrees from the reference rotation angle and the drag of the generator 1290 starts to rise accordingly, This is preferable in that over-rotation can be suppressed by passing between the rotor blades 1260 that are Savonius-type blades.
And even if it is a case where any rotary blade is used, the peripheral speed ratio in this electric power generation unit 1200 does not exceed 2, the pressure of compressed air is 0.1-1.2 MPa, and the flow volume is 50-600 liters. / Min. And the radius of the rotating disk is 5 to 50 mm, the rotational speed of the rotating shaft is 50000 rpm or less.

[Structure of discharge unit]
Next, the structure of the discharge unit 1400 of this static elimination dust removal apparatus 1000 is demonstrated with reference to FIG. The support structure of the discharge needle 1430 of the discharge unit 1400 will be described later in the structure of the nozzle unit 1300.
The discharge unit 1400 ionizes the compressed air that has passed through the air pipe 1040 after power generation. The discharge unit 1400 includes a control board 1410 that is connected to the generator 1290 and receives the generated power, and a high-voltage power generation board that generates high-voltage power based on the power that is connected to the control board 1410 and generated by the generator 1290. 1420 and a discharge needle 1430 that is connected to a high voltage power generation substrate 1420 and generates a corona discharge when high voltage power is applied.

Since control board 1410, high-voltage power generation board 1420 and discharge needle 1430 (the structure of discharge needle 1430 itself) are known, detailed description thereof will not be repeated here.
[Nozzle unit structure]
Next, regarding the structure of the nozzle unit 1300 of this static elimination dust removing apparatus 1000, in addition to FIGS. 1 to 5, a sectional view of the nozzle unit 1300 shown in FIG. 13, a partial perspective view of the nozzle unit 1300 shown in FIG. 15 is a partial three-side view of nozzle unit 1300 shown in FIG. 15, a further partial sectional view and an enlarged view of nozzle unit 1300 shown in FIG. 16, and a three-side view and sectional view of cap 1370 shown in FIG. explain.

The nozzle unit 1300 is a nozzle unit that functionally combines two or more compressed air flows having different flow velocities and ejects them. The second compressed air has a higher flow velocity than the first compressed air (power generation side air). A second nozzle 1340 that ejects (duster-side air), a position upstream of the tip of the second nozzle 1340 and the vicinity of the second nozzle 1340 (here, the surroundings). A first nozzle that ejects one compressed air (power generation side air), and sucks the first compressed air by the negative pressure generated by the second compressed air ejected from the second nozzle 1340, It is made to eject with 2nd compressed air. Here, although the first nozzle will be described later, as shown in FIG. 13, as shown in FIG. 13, a tip portion 1313 of a gap formed by the inner wall of the member (cap 1370), the second output hole 1312, and the second pipe outer cylinder surface 1314. (The inner diameter of the cap 1370> the outer diameter of the second pipe outer cylinder surface 1314> the outer diameter of the second output hole 1312).

  More specifically, the nozzle unit 1300 includes a first input hole 1334 into which the first compressed air flows, a second input hole 1318 into which the second compressed air having a higher flow rate than the first compressed air flows, The first output hole 1322 through which one compressed air is ejected, the second output hole 1312 through which the second compressed air is ejected, and the first pipe that connects the first input hole 1334 and the first output hole 1322 It includes a tube portion 1330 and a straight tube portion 1324, and a second conduit 1316 that connects the second input hole 1318 and the second output hole 1312. Further, as the second output hole 1312, a second nozzle 1340 having a small-diameter nozzle hole for ejecting the second compressed air is provided at the distal end portion of the second conduit 1316, and the second compression ejected from the second nozzle 1340. A substantially cylindrical member (specifically, a cap 1370) through which the first compressed air circulates due to the negative pressure generated by the air includes an inner diameter of the member (cap 1370) and an outer diameter (first of the second pipe 1316). It is provided on the first output hole side with a gap (hereinafter sometimes referred to as a space) between it and the two-pipe outer cylinder surface 1314), and the nozzle hole is exposed from the tip of the member (cap 1370). Are arranged as follows.

This member is a cap that covers the first output hole side so as to cover the periphery of the distal end portion of the second pipe 1316 at its distal end side, and is a first output hole along the inner wall of the cap. Compressed air flows and is ejected from the front end 1313 of the gap.
Thus, the non-straight pipe portion 1330 that is the first pipe line has a non-straight pipe shape, and the second pipe line 1316 has a straight pipe shape.

  Further, it is characteristic that the cap 1370 has a hollow substantially truncated cone shape with a narrow downstream side of compressed air, and the second output hole 1312 has a solid substantially truncated cone shape with a narrow downstream side of the compressed air (substantially cylindrical). A second nozzle 1340 having a plurality of small-diameter nozzle holes formed radially at the tip of the second pipe 1316. Furthermore, a plurality of grooves are provided radially on the inner wall of the cap.

Details of the nozzle unit 1300 having such features will be described below.
In this nozzle unit 1300, a post-power generation air pipe 1040 is connected to the first input hole 1334, and a duster air pipe 1030 is connected to the second input hole 1318.
First, the support structure of the discharge needle 1430 of the discharge unit 1400 described above will be described with reference to FIG. The discharge needle 1430 is supported by a discharge needle support 1360. The discharge needle support 1360 is made of a ceramic cylinder (ceramic cylinder) 1364 and a metal fitting fitted near the center of the outer periphery of the cylinder 1364. And a cylindrical body (metal cylinder) 1362. The holding body 1432 of the discharge needle 1430 is fitted to the upstream side of the ceramic cylinder 1364, and the downstream side of the ceramic cylinder 1364 is such that the compressed air from the non-straight tube portion opening 1332 flows to the discharge needle 1430 side. Are inserted into the connection holes 1326.

  Next, the configuration of the nozzle unit 1300 will be described with reference to FIG. The parts constituting the nozzle unit 1300 are roughly composed of three parts except for the support part of the discharge needle 1430 described above. The rectifying plate 1310, the cap 1370, the rectifying plate 1310, and the cap 1370 are composed of three parts. The nozzle case 1390 that is integrally supported includes three parts. Hereinafter, the structure of the rectifying plate 1310 will be described with reference to FIGS. 14 to 16, and the structure of the cap 1370 will be described with reference to FIG. 17.

As shown in FIGS. 14 and 15, the rectifying plate 1310 is provided so as to penetrate the support disc 1320, the non-straight pipe portion 1330 and the straight pipe portion 1324, which are the first pipelines, and the support disc 1320. And a straight pipe-shaped second pipe 1316. The surface of the outer cylinder constituting the second pipe line 1316 is referred to as a second pipe outer cylinder surface 1314.
In FIG. 14, the flow of the 1st compressed air (power generation side) and the 2nd compressed air (duster side) in the baffle plate 1310 is shown by the arrow. The flow of the first compressed air in the current plate 1310 flows from G (1) to G (2), and the flow of the second compressed air flows from D (1) to D (2).

  More specifically, as shown in FIGS. 14 and 15, the first compressed air that enters from the first input hole 1334 of the non-straight pipe portion 1330 that is the first pipe line collides with the support disk 1320 and is non-straight. The flow direction is changed by being guided to the tube portion 1330 and discharged from the non-straight tube portion opening 1332, and is discharged from the connection hole 1326 through the straight tube portion 1324 to the first output hole 1322. The discharged first compressed air passes through a space formed by the second output hole 1312, the second pipe outer cylinder surface 1314, and the cap 1370, and a tip portion 1313 as a first nozzle provided on the downstream side thereof. Are discharged from the static eliminating dust removing device 1000. The first compressed air discharged from the non-straight tube portion opening 1332 is ionized by corona discharge generated from the discharge needle 1430 when entering the connection hole 1326. That is, the first compressed air collides with the support disc 1320 and is guided to the non-straight pipe portion 1330, the direction of the flow is changed, and the first compressed air is ionized in a state where the flow velocity is considerably reduced. Then, in order to efficiently eject the first compressed air having a reduced flow velocity from the first nozzle (tip portion 1313), the second compressed air that maintains the high-pressure and high-speed state without changing the flow direction is A negative pressure generated when jetting from the second nozzle 1340 is used.

Further, as shown in FIGS. 14 and 15, the second compressed air that has entered from the second input hole 1318 of the second pipe 1316 is provided as the second output hole 1312 without changing the flow direction. It is discharged from the second nozzle 1340.
Thus, in the rectifying plate 1310, the flow direction of the first compressed air is changed toward the first nozzle (tip portion 1313), whereas the flow direction of the second compressed air is changed. Without going to the second nozzle 1340.

The structure of the second nozzle 1340 will be described with reference to FIG. Here, FIG. 16A is an enlarged sectional view taken along the line XX in FIG. 15, and FIG. 16B is an enlarged sectional view taken along the line YY in FIG. FIG. 16 is an enlarged view of a range Z in FIG.
As shown in FIGS. 15A and 16C, the second nozzle 1340 is provided with a plurality (six in this case) of nozzle holes 1342 with a center portion 1380 as the center of point symmetry, and the nozzle holes 1342. In between, negative pressure grooves 1346 corresponding to the number of nozzle holes 1342 are provided. The negative pressure generated by the second compressed air ejected from the nozzle hole 1342 at high pressure and high speed is rectified by the negative pressure groove 1346 and ejected from the first nozzle (tip portion 1313) by the negative pressure along the negative pressure groove 1346. The first compressed air is efficiently sucked.

  The structure of the cap 1370 will be described with reference to FIG. The cap 1370 has a hollow, substantially truncated cone shape on the downstream side of the compressed air, and includes a cylinder 1374, an opening 1372 on the downstream side of the cylinder 1374, and a flange 1376 on the upstream side of the cylinder 1374. As shown in FIGS. 17B and 17C, the cap 1370 is not symmetrical in the vertical direction in a side view, but the present invention is not limited to such a shape. The cap 1370 may have a hollow substantially truncated cone shape.

  Grooves 1380 are provided radially on the inner wall of the cylindrical body 1374. As shown in FIG. 13, in the space formed by the second output hole 1312, the second pipe outer cylinder surface 1314, and the cap 1370, the nozzle hole The negative pressure generated by the second compressed air ejected from 1342 is rectified by this groove 1380 (the negative pressure is effectively induced), and the first compressed air is efficiently supplied from the first nozzle (tip portion 1313). To erupt. The groove 1380 is formed, for example, by cutting the inner wall of the cylindrical body 1374 so as to leave the convex portion 1378.

[Working operation of static elimination equipment]
FIG. 18 and FIG. 19 are diagrams for explaining the operation of the static electricity removing dust removing apparatus 1000 according to the present embodiment having the structure as described above (and FIG. 7). Reference is made to the description.
As shown in FIG. 18, the user picks up the static elimination dust removal device 1000 and points the tip (second nozzle 1340) of the static elimination dust removal device 1000 toward the static elimination dust removal object. When the outer first trigger 1112 is pulled, the dual valve 1120 shifts from the state shown in FIG. 6 to the state shown in FIG. 7A, and the first compressed air begins to flow to the power generation unit 1200.

  The rotating blade 1220 is rotated by the first compressed air flowing to the power generation unit 1200, the generator 1290 connected to the rotating shaft of the rotating blade 1220 starts to rotate, and power generation is started at time t (2). At time t (3), corona discharge starts at the discharge needle 1430. At the subsequent time t (4), the first compressed air is ejected from the first nozzle (tip portion 1313). However, at this time, since the second compressed air is not ejected from the second nozzle 1340, the suction action by the negative pressure is not exhibited. In FIG. 18, the difference in the flow rate of the first compressed air from the first nozzle (tip portion 1313) due to the presence or absence of negative pressure suction is not expressed.

  In addition, the actual times from time t (1) to t (4) are the arrival delay time of compressed air, the delay time on the electric circuit of the electric circuit (the generator 1290, the control board 1410, and the high-voltage power generation board 1420), the discharge This is due to the corona discharge delay time of the needle 1430, and is a short time of, for example, several seconds or less. Although it is such a short time, in this static elimination dust removal apparatus 1000, it is preferable that the compressed air is ionized at the time t (4) when the first compressed air is injected. However, the present invention is not limited to the charge-removing dust removing device that exhibits such an operation.

  Next, when the user pulls the inner second trigger 1114 at time t (5) (when the user pulls the inner second trigger 1114 together with the outer first trigger 1112), the dual valve 1120 is shown in FIG. The state shown in FIG. 7A is shifted to the state shown in FIG. 7B, and the second compressed air is supplied to the nozzle unit 1300 while the first compressed air flows to the power generation unit 1200 while maintaining a certain amount Q (1). Begins to flow. At a subsequent time t (6), the second compressed air is ejected from the second nozzle 1340. At this time, since the second compressed air is ejected from the second nozzle 1340, a negative pressure suction action is exhibited, and the first compressed air from the first nozzle (tip portion 1313) is efficiently ejected. ing.

  After this time t (5), until the second trigger 1114 is fully opened, the second compressed air from the second nozzle 1340 is approximately proportional to the valve opening of the second valve body 1160 of the dual valve 1120. The ejection flow rate (and the total ejection flow rate) changes. In FIG. 18, it is assumed that the user opens the second trigger 1114 at a constant ratio with respect to time in order to explain this substantially proportional relationship.

Between this time t (5) and time t (7) (when the second valve body 1160 is in the open state as shown in FIG. 7B), the ejection flow rate of the second compressed air is increased for dust removal. A case where the second valve body 1160 is suddenly opened by suddenly grasping the second trigger 1114 and indicated by a one-dot chain line in FIG. 18 will be described with reference to FIG. To do.
When the second trigger 1114 is suddenly opened at time t (12) while increasing the ejection flow rate of the second compressed air for dust removal at time t (11), the first continuous passage 1122 Compressed air pressure drops. Therefore, at time t (12), the needle piston 1140 moves downward in FIG. 6 as shown in FIG. 7C against the pushing force by the first spring 1136 and the second spring 1138. As the needle piston 1140 moves downward, the gap between the tip tapered portion 1148 and the third communication conduit 1132 increases, and the first compressed air supplied to the power generation unit 1200 through the first valve body 1150 does not decrease. To be adjusted.

  After that, when the second trigger 1114 is stopped suddenly at time t (13), the pressure of the compressed air in the first series passage 1122 is recovered at time t (14). Thus, when the pressure of the compressed air returns to the original state, the needle piston 1140 moves upward in FIG. 6, and the gap between the tip tapered portion 1148 and the third communication conduit 1132 is narrowed, and the first valve body 1150 is moved. The first compressed air supplied to the power generation unit 1200 is adjusted so as to return to the original flow rate.

Note that the context of time t (13) and time t (14) is not limited to that shown in FIG. Even in a state where the second trigger 1114 is suddenly opened, it can be assumed that the pressure of the compressed air in the first series conduit 1122 recovers.
[Function and effect]
As described above, according to the static elimination apparatus 1000 according to the present embodiment,
As a first feature, the compressed air used for power generation and the compressed air for dust removal are divided,
As a second feature, a valve unit having an adjustment mechanism as a valve unit to divide the air flow path into two systems is adopted.
A third feature is the adoption of a small power generation unit that uses high-pressure compressed air as an energy source.
As a fourth feature, a nozzle unit that joins and jets compressed air of two or more systems with different flow velocities is adopted.
Since the static elimination / dust removal device that does not require external power supply is realized, it is possible to provide a static elimination / dust removal device that exhibits the static elimination function and the dust elimination function sufficiently and that is small, low-cost, and has good operability. And the static elimination dust removal apparatus which expresses such a special effect is realizable by using the nozzle unit which concerns on this invention.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The nozzle unit according to the present invention can be suitably applied to a static elimination dust removing device that does not require external power supply, and in particular, exhibits a static elimination function and a dust elimination function, and is small, low cost, and easy to operate. It can be suitably applied to a good static elimination dust removal device.

1000 Static elimination dust removing device 1100 Valve unit 1110 Operation unit (first trigger 1112, second trigger 1114)
1120 Two-way valve 1122 First communication line 1124 Input line 1126 First output line 1128 Second output line 1130 Second communication line 1132 Third communication line 1140 Needle piston (adjustment mechanism)
1200 Power generation unit 1210 Housing case 1216 Housing inner wall 1220, 1240, 1250, 1260 Rotating blade 1224 Rotating disk 1280 Generator case 1290 Generator 1300 Nozzle unit 1310 Rectifying plate 1313 Tip (first nozzle)
1316 Straight pipe (second pipe)
1320 Supporting disc 1330 Non-straight pipe part (first pipe line)
1340 Second nozzle 1360 Discharge needle support 1370 Cap 1380 Groove 1390 Nozzle case 1400 Discharge unit 1410 Control board 1420 High voltage power generation board 1430 Discharge needle

Claims (7)

A nozzle unit that combines two or more lines of compressed air with different flow velocities and ejects them.
A second nozzle that ejects second compressed air that has a higher flow rate than the first compressed air;
A first nozzle that is provided at a position in the vicinity of the second nozzle at a position upstream of the compressed air from the tip of the second nozzle, and that ejects the first compressed air;
A nozzle unit, wherein the first compressed air is sucked by the negative pressure generated by the second compressed air ejected from the second nozzle, and the first compressed air is ejected together with the second compressed air. A nozzle unit that combines two or more lines of compressed air with different flow velocities and ejects them.
A first input hole into which the first compressed air flows,
A second input hole into which second compressed air having a flow velocity faster than that of the first compressed air flows,
A first output hole from which the first compressed air is ejected;
A second output hole from which the second compressed air is ejected;
A first pipe connecting the first input hole and the first output hole;
A second pipe connecting the second input hole and the second output hole;
As the second output hole, a small-diameter nozzle hole for ejecting the second compressed air is provided at the tip of the second conduit,
A substantially cylindrical member through which the first compressed air circulates due to the negative pressure generated by the second compressed air ejected from the nozzle hole is between the inner diameter of the member and the outer diameter of the second conduit. Provided with a gap on the first output hole side,
It is arrange | positioned so that the said nozzle hole may be exposed from the front-end | tip of the said member, The nozzle unit characterized by the above-mentioned. The member is a cap that covers the first output hole side so as to cover the periphery of the distal end portion of the second conduit on the distal end side thereof,
3. The nozzle unit according to claim 2, wherein the first compressed air flows as the first output hole along the inner wall of the cap and is ejected from a tip end portion of the gap.   The nozzle unit according to claim 2 or 3, wherein the first pipe line has a non-straight pipe shape, and the second pipe line has a straight pipe shape. The cap has a substantially hollow truncated cone shape on the downstream side of compressed air,
The plurality of small-diameter nozzle holes are radially provided at a distal end portion of a second conduit having a solid solid truncated cone shape on the downstream side of the compressed air as the second output hole. The nozzle unit according to any one of claims 2 to 4.   The nozzle unit according to claim 3, wherein a plurality of grooves are provided radially on the inner wall of the cap.   The static elimination dust removal apparatus provided with the nozzle unit in any one of Claims 1-6.