JP5526428B2 - Shock wave processing equipment - Google Patents

Description

  The present invention relates to a shock wave processing apparatus that processes a workpiece by applying a shock wave to the workpiece such as food such as fruits, vegetables, and cereals.

  Conventionally, there is a method using shock waves as a processing method for foods (foodstuffs) such as fruits, vegetables and cereals (see, for example, Patent Document 1). Specifically, the shock wave is a wave of pressure change transmitted at a speed exceeding the speed of sound, and when the shock wave acts on the food, the food shrinks, and then the reaction causes the food to expand at once. Due to the contraction and expansion due to the force of the shock wave, the cell walls of the food are destroyed, and the food is softened or powdered. According to the food processing method using such a shock wave, the processing time is shortened, so that the nutritional value of the food is not impaired due to the heat generated by the processing and can be easily processed. It becomes.

  As one of means for generating a shock wave used for processing food in this way, there is a method using explosion. According to the method using explosion, a sufficient strength for processing food can be easily obtained with respect to the shock wave acting on the food. However, the method of using an explosion to generate a shock wave lacks versatility and is difficult to apply to the processing of food for cooking at home.

  Thus, as a means for generating a shock wave, there is a method of using electric energy such as an electric pulse (for example, see Patent Document 2). According to such a method, versatility can be improved for the processing of food using shock waves, and the possibility of introduction into a general household is also increased. However, even in a method using electric energy, in order to generate a shock wave having sufficient strength for processing food, a shock wave is generated due to a large capacity of a necessary capacitor. However, the current situation is that it is difficult to introduce it into a general household.

Table 2006/098453 Special table 2004-518434 gazette

  The present invention has been made in view of the problems as described above, and the problem to be solved can generate a shock wave having sufficient strength for processing foods and the like even with relatively small energy, An object of the present invention is to provide a shock wave machining apparatus capable of improving versatility.

The shock wave machining apparatus of the present invention is a shock wave machining apparatus for machining a workpiece by applying a shock wave to the workpiece, forming a cavity filled with a transmission medium for propagating the shock wave, and at least the above-mentioned A transmission container portion made of a high acoustic impedance material having a higher acoustic impedance than the transmission medium is provided, and the transmission container portion is filled with the transmission medium and forms a shock wave generation space for generating a shock wave. A shock wave generation chamber is formed adjacent to each other, and the cavity and the shock wave generation space are formed in a state of being partitioned from each other via a wall portion made of a metal that is the high acoustic impedance material . The transfer container portion generates a shock wave from the outside of the cavity into the cavity in a state where the workpiece is accommodated in the cavity. By receiving an impact, in which the action of shock waves to the workpiece through the transmission container unit and the transfer medium from said wall portion.

  In the shock wave processing apparatus of the present invention, the shock wave generating chamber includes at least a pair of electrodes disposed as opposed to each other at a predetermined interval as means for generating a shock wave, A shock wave is generated by discharging.

  Further, in the shock wave processing apparatus of the present invention, the shock wave generating chamber includes a striking device that applies a mechanical shock force to the transmission container part as means for generating a shock wave, and the shock wave is generated by the striking device. Is generated.

  In the shock wave processing apparatus of the present invention, the shock wave generating chamber includes an explosive as a means for generating the shock wave, and generates the shock wave by exploding the explosive.

  In the shock wave machining apparatus of the present invention, the transmission medium filled in the cavity is a liquid, and includes bubble generating means for generating bubbles in the liquid.

  According to the present invention, it is possible to generate a shock wave having sufficient strength for processing foods and the like even with relatively small energy, and to improve versatility.

The figure which shows the structure of the shock wave processing apparatus which concerns on 1st embodiment of this invention. The figure which shows the modification of the shock wave processing apparatus which concerns on 1st embodiment of this invention. The figure which shows the modification of the shock wave processing apparatus which concerns on 1st embodiment of this invention. The figure which shows the structure of the shock wave processing apparatus which concerns on 2nd embodiment of this invention. The figure which shows the structure of the shock wave processing apparatus which concerns on 3rd embodiment of this invention. The figure which shows the structure of the shock wave processing apparatus which concerns on 4th embodiment of this invention. The figure which shows the structure of the shock wave processing apparatus which concerns on 5th embodiment of this invention. The figure which shows the structure of the shock wave processing apparatus which concerns on 6th embodiment of this invention. The figure which shows the structure of the shock wave processing apparatus which concerns on 7th embodiment of this invention.

  The present invention, in a configuration for processing a workpiece by applying a shock wave to a workpiece such as food, to the workpiece by devising the configuration of the container portion that accommodates the workpiece during processing Therefore, it is intended to make the shock wave act efficiently. Embodiments of the present invention will be described below.

  A first embodiment of the present invention will be described. As shown in FIG. 1, a shock wave machining apparatus 1 according to this embodiment processes a workpiece 2 by applying a shock wave to the workpiece 2. In FIG. 1, an apple is shown as the workpiece 2.

  The shock wave machining apparatus 1 includes a container 3 that forms a cavity 4 that accommodates a workpiece 2. The cavity 4 that is the internal space of the container 3 is formed as a sealed space. The cavity 4 is filled with a transmission medium 5 that propagates shock waves. The transmission medium 5 is a medium that can transmit shock waves, that is, a medium that transmits pressure change waves.

  Therefore, the transmission medium 5 is not particularly limited as long as it can transmit a shock wave, a liquid such as water or salt water, an elastic body such as rubber, a solid such as a gel-like object, a gas such as the atmosphere, Alternatively, a mixture of these is used. However, the transmission medium 5 is preferably liquid or solid from the viewpoint of shock wave transmission, and water is preferably used because of its low cost and easy availability.

  The container 3 is made of a high acoustic impedance material. Here, the high acoustic impedance material is a material having an acoustic impedance higher than that of at least the transmission medium 5 filled in the cavity 4. As a material constituting the container 3, for example, any metal such as aluminum (Al), copper (Cu), copper alloy, iron (Fe), iron alloy, nickel (Ni), tungsten (W), tungsten alloy, etc. A material having a relatively large acoustic impedance relative to a resin material such as water or plastic is used.

In general, the acoustic impedance is extremely small in a gas such as air, and tends to increase in the order of liquid, resin, and metal. Specifically, the acoustic impedance is, for example, air: about 4.1 × 10 ² , water: about 1.5 × 10 ⁶ , acrylic resin: about 3.2 × 10 ⁶ , aluminum: about 17 × 10 ⁶ , Copper: about 45 × 10 ⁶ (unit is Pa · s / m ³ ). The velocity of the elastic wave or shock wave propagating in the metal is, for example, 5000 m / sec for copper and 4500 m / sec or more for aluminum.

As the material constituting the container 3, a material having an acoustic impedance in the range of 1.5 × 10 ^{6 to} 110 × 10 ⁶ Pa · s / m ³ is used. Preferably, the acoustic impedance of the material constituting the container 3 is in the range of 10 × 10 ⁶ to 50 × 10 ⁶ Pa · s / m ³ . Therefore, as a material constituting the container 3, aluminum having an acoustic impedance of about 17 × 10 ⁶ Pa · s / m ³ is used from the viewpoints of obtaining good workability and relatively low cost. Preferably used.

  In the present embodiment, the container 3 and the cavity 4 have a substantially rectangular shape (for example, a columnar shape or a rectangular parallelepiped shape) in a cross-sectional view as shown in FIG. The container 3 has a base 3a having an opening on one side (upper side in FIG. 1) and a lid 3b that closes the opening of the base 3a. The opening on the upper side of the base portion 3 a that is blocked by the lid portion 3 b is used as an opening portion for taking the workpiece 2 into and out of the cavity 4. However, the shapes of the container 3 and the cavity 4 are not particularly limited.

  As described above, in the shock wave processing apparatus 1 of the present embodiment, the container 3 forms the cavity 4 filled with the transmission medium 5 that propagates the shock wave, and has high acoustic impedance that is at least higher than that of the transmission medium 5. It functions as a transmission container portion made of an impedance material.

  The shock wave machining apparatus 1 receives the impact for generating a shock wave in the cavity 4 from the outside of the cavity 4 in a state where the workpiece 2 is accommodated in the cavity 4. A shock wave is applied to the workpiece 2 via the medium 5.

  The workpiece 2 accommodated in the cavity 4 is put in a predetermined position in the cavity 4 by a support member (not shown) in a state where the workpiece 2 is put in a transparent film-like protective material such as a vinyl bag or a polyethylene bag. Set. Moreover, it is preferable that the inside of the protective material in which the workpiece 2 is put is depressurized to a vacuum state from the viewpoint of enhancing the shock wave transmission effect on the workpiece 2 and the protection effect of the workpiece 2.

  As shown in FIG. 1, in the shock wave machining apparatus 1 of the present embodiment, a shock wave generating chamber 6 is formed adjacent to a container 3. The shock wave generation chamber 6 is a room for filling the transmission medium 7 and generating a shock wave. A shock wave generated in the shock wave generating chamber 6 propagates through the container 3 and the transmission medium 5 in the container 3 and acts on the workpiece 2.

  The shock wave generation chamber 6 forms a shock wave generation space 9 that is a space for generating a shock wave by a housing 8 made of resin. The shock wave generation space 9 is filled with the transmission medium 7. As the transmission medium 7, water is preferably used similarly to the transmission medium 5 filled in the cavity 4, but liquid, solid, gas, or a mixture thereof can be used. Further, the transmission medium 5 filled in the cavity 4 and the transmission medium 7 filled in the shock wave generation space 9 may be the same or different.

  The shock wave generation space 9 is formed in the cavity 4 of the container 3 via a wall part (hereinafter referred to as “lower wall part”) 3c on the side (lower side in FIG. 1) where the shock wave generation chamber 6 is adjacent to the container 3. It forms so that it may adjoin. In other words, the cavity 4 and the shock wave generation space 9 are formed in a state of being partitioned from each other via the lower wall portion 3c.

  Therefore, the housing 8 constituting the shock wave generation chamber 6 is formed so that one side (the upper side in FIG. 1) is opened, and the side to be opened faces the lower side wall 3 c with respect to the container 3. That is, the shock wave generation space 9 is formed as a sealed space by the opening formed on one side of the housing 8 being closed by the lower wall 3c of the container 3. The shapes of the housing 8 and the shock wave generating space 9 are not particularly limited.

  The shock wave machining apparatus 1 according to the present embodiment includes a pair of electrodes 10 disposed as opposed to each other at a predetermined interval as means for generating a shock wave. The electrode 10 is a rod-shaped electrode and is made of a material having excellent conductivity, such as brass or copper. About the shape of the electrode 10, it is preferable that the front end side (side which opposes the other electrode 10) has a conical shape.

  The pair of electrodes 10 are provided in a state of projecting into the shock wave generating space 9 and supported by the housing 8 by penetrating through the side walls facing each other in the housing 8 in the horizontal direction (left-right direction in FIG. 1). The pair of electrodes 10 is insulated from the container 3 by being supported by the resin housing 8 and is provided in a state where a predetermined interval is provided between the tips (the tips do not contact each other). . The distance provided between the pair of electrodes 10 is appropriately set to a dimension that maximizes the energy of the shock wave acting on the workpiece 2 depending on the type of the transmission medium 7 filled in the shock wave generation chamber 6 and the like. The

  The pair of electrodes 10 is connected to a power supply unit 11 for generating a discharge between the electrodes 10 via a conducting wire or the like. The power supply unit 11 generates a single or continuous pulse discharge between the pair of electrodes 10. The power supply unit 11 is configured to be able to adjust the number and size of pulse discharges generated between the pair of electrodes 10. As described above, in the shock wave generation chamber 6, the pair of electrodes 10 and the power supply unit 11 connected thereto constitute a pulse generation device.

  As the power supply unit 11, for example, a configuration including a capacitor 11a that stores electrical energy, a power supply 11b that supplies power to the capacitor 11a, and a controller 11c that controls power supplied from the power supply 11b to the capacitor 11a is used. It is done. However, the configuration of the power supply unit 11 is not particularly limited.

  Further, with respect to the arrangement of the electrode 10, a modification of the present embodiment is shown in FIGS. FIG. 2 shows an arrangement example in which both of the pair of electrodes 10 are provided in a state in which a side wall portion on one side (right side in FIG. 2) constituting the housing 8 is penetrated in a direction substantially perpendicular to the side wall portion. Has been. FIG. 3 shows an arrangement example in which both of the pair of electrodes 10 are provided in a state in which the lower wall (side in FIG. 3) constituting the housing 8 is penetrated in a direction substantially perpendicular to the wall. Has been.

  Thus, the pair of electrodes 10 may be arranged in parallel. Therefore, the “opposing state” of the pair of electrodes 10 includes a state in which they are arranged in series (substantially on the same straight line), that is, a state in which the tips of each other face each other (see FIG. 1), in parallel. Are arranged, that is, opposed to each other in a parallel (or substantially parallel) posture (see FIGS. 2 and 3).

  Further, the number of electrodes 10 provided in the shock wave generation chamber 6 is not limited, and three or more electrodes 10 may be provided in the shock wave generation chamber 6. In other words, at least a pair of the electrodes 10 may be provided.

  As described above, in this embodiment, the shock wave generation chamber 6 includes at least a pair of electrodes 10 disposed in a state of being opposed to each other with a predetermined interval as means for generating a shock wave. A shock wave is generated by discharging in the transmission medium 7 by the above.

  The shock wave machining apparatus 1 of the present embodiment having the above-described configuration processes the workpiece 2 by the following action. When processing the workpiece 2, a single or continuous pulse discharge is generated between the pair of electrodes 10 by electricity supplied from the power supply unit 11.

  The impact force caused by the electric pulse generated between the pair of electrodes 10 is transmitted to the container 3 as a shock wave via the transmission medium 7 in the shock wave generation space 9. As described above, the shock wave is transmitted from the shock wave generating chamber 6 side to the container 3, whereby an elastic wave is generated in the container 3 (within the material constituting the container 3). That is, as described above, the shock wave transmitted to the container 3 made of the high acoustic impedance material propagates through the container 3 as an elastic wave.

  The elastic wave generated in the container 3 propagates to the transmission medium 5 in the cavity 4 while propagating through the container 3. The elastic wave from the container 3 that has propagated to the transmission medium 5 becomes a single or a plurality of continuous shock waves and acts on the workpiece 2 via the transmission medium 5. That is, the elastic wave generated in the container 3 becomes a shock wave by being incident on the transmission medium 5, propagates through the transmission medium 5, and acts on the workpiece 2.

  Thus, the shock wave generated by the pair of electrodes 10 in the shock wave generation space 9 of the shock wave generation chamber 6 propagates through the container 3 surrounding the workpiece 2, so that the workpiece 2 can be viewed from multiple directions. It acts via the transmission medium 5.

  Specifically, the shock wave acting on the workpiece 2 by the pulse discharge generated between the pair of electrodes 10 is mainly generated in the cavity 4 from the shock wave generation space 9 through the lower side wall portion 3 c of the container 3. A component incident on the transmission medium 5 (see FIG. 1, arrow A1) and a component incident on the cavity 4 from the side wall side of the container 3 (transmission medium 5) (see the arrow A1 in FIG. 1) In the same figure, see arrow A2). The shock wave acting on the workpiece 2 includes a shock wave obtained by propagating a shock wave (elastic wave) from the transmission medium 7 in the shock wave generation space 9 to the container 3 through the housing 8, and in the cavity 4. A shock wave or the like reflected by the wall surface that forms the cavity 4 by passing through the workpiece 2 is also included.

  When the shock wave acts on the work piece 2 in this way, the work piece 2 contracts due to the action of the pressure change, and then the work piece 2 expands at a stretch by the reaction. Due to the contraction and expansion due to the action of the shock wave, the cell wall or the like of the workpiece 2 is broken, and the workpiece 2 is softened or pulverized.

  For example, when the workpiece 2 is an apple, the apple processed by the shock wave processing device 1 is in a softened state by breaking the cell wall or the like while maintaining the original shape. An apple that has been softened by the action of a shock wave is in a state in which it can easily drink its internal juice, for example, by inserting a straw. Therefore, according to the apple softened by the action of the shock wave by the shock wave processing apparatus 1, the compression efficiency is improved in comparison with the apple having the original hardness, and the time, energy consumption and waste amount required for the compression are reduced. Can be made.

  Further, in the shock wave machining apparatus 1, when the transmission medium 5 filled in the cavity 4 is a liquid such as water, bubbles 12 such as microbubbles can be generated in the transmission medium 5. For this reason, the shock wave machining apparatus 1 includes a bubble generating device 14 as a bubble generating means for generating bubbles 12 in the transmission medium 5 (in the liquid).

  As the bubble generation device 14, a device having a known configuration can be used as long as it can generate minute bubbles 12 such as microbubbles and nanobubbles. In the present embodiment, the bubble generating device 14 is disposed in the cavity 4.

  The bubble generator 14 is, for example, a swirling flow type microbubble generator that generates microbubbles by generating a swirling flow. In this case, in the bubble generating device 14, a gas such as carbon dioxide or oxygen supplied from the gas supply path 14a and, for example, a pressurized liquid supplied by pressurizing the transmission medium 5 in the cavity 4 are swirled. To generate bubbles 12. The bubble generating device 14 may be configured to supply the bubbles 12 into the transmission medium 5 via a supply path that is disposed outside the cavity 4 and communicates with the cavity 4.

  In this way, by generating the bubbles 12 in the transmission medium 5 by the bubble generating device 14, the impact generated when the bubbles 12 are crushed, that is, the impact force acting on the workpiece 2 by the impact pressure action of the bubbles 12 is increased. Can do. When processing the workpiece 2, bubbles may be generated in the transmission medium 7 in the shock wave generation chamber 6.

  In the shock wave processing apparatus 1 of the present embodiment, one or a plurality of elastic waves generated in the container 3, that is, in the high acoustic impedance material by the shock from the shock wave generating chamber 6, have an acoustic impedance higher than that of the material constituting the container 3. By entering the low transmission medium 5, a single shock or a plurality of continuous shock waves are generated in the transmission medium 5. That is, the elastic wave generated in the high acoustic impedance material (in the container 3) enters a material having a relatively low acoustic impedance (transmission medium 5) to become a shock wave and propagates in the material having a relatively low acoustic impedance. . Thus, the shock wave generated by the elastic wave in the container 3 entering the transmission medium 5 propagates through the transmission medium 5 and acts on the workpiece 2 to perform the desired processing.

  In the shock wave processing apparatus 1, shock waves are received from various directions including the shock wave reflected in the cavity 4 through the container 3 surrounding the workpiece 2 with respect to the workpiece 2 in the container 3. Therefore, a shock wave can be effectively applied to the workpiece 2. That is, the energy for generating a shock wave can be efficiently applied to the workpiece 2 as a shock wave. This eliminates the need for a large-capacity capacitor or the like in order to generate a shock wave that acts on the workpiece 2, and makes it possible to realize a very small device configuration. As described above, according to the shock wave processing apparatus 1 of the present embodiment, a shock wave having a strength sufficient for processing the workpiece 2 such as food can be generated even with relatively small energy, thereby improving versatility. You can plan.

  Further, in the shock wave machining apparatus 1 of the present embodiment, the number of shock waves applied to the workpiece 2 is adjusted by adjusting the number of pulse discharges generated between the pair of electrodes 10 in the shock wave generation chamber 6 and the magnitude of power. And the magnitude of the shock wave can be adjusted. Thereby, it becomes possible to perform the target process according to the kind, size, etc. of the workpiece 2.

  Further, in the shock wave machining apparatus 1 of the present embodiment, the shock wave generating chamber 6 includes a pair of electrodes 10 disposed as opposed to each other at a predetermined interval as means for generating a shock wave. A shock wave is generated by discharging in the transmission medium 7 by the pair of electrodes 10. That is, the shock wave machining apparatus 1 of the present embodiment uses an impact force generated by a single or continuous electric pulse as an impact for generating a shock wave in the cavity 4. The electrical impact force may be obtained by generating plasma.

  Thus, by adopting a configuration that uses electrical energy to generate a shock wave, versatility can be further improved, and the possibility of introducing the shock wave processing apparatus 1 into a general home can be increased. it can. The configuration for generating a shock wave that acts on the workpiece 2 is not limited to this embodiment.

  A second embodiment of the present invention will be described. The shock wave machining apparatus according to this embodiment is different from the first embodiment in that a mechanical shock force is used to generate a shock wave. For this reason, in this embodiment, about the part which is common in 1st embodiment, it abbreviate | omits description using the same code | symbol.

  As shown in FIG. 4, the shock wave machining device 21 of the present embodiment includes a striking device 22 that generates a single or continuous mechanical shock force in the shock wave generating chamber 6 as a configuration for generating a shock wave. . The striking device 22 has a hammer member 23 that applies a mechanical impact force to the container 3.

  The hammer member 23 is movably provided in the shock wave generating space 9 (in the transmission medium 7) so as to be urged and moved so that the container 3 can be hit from the side of the lower wall 3c (see arrow B). . Specifically, the hammer member 23 has a striking portion 23a on the side to be struck against the container 3 (upper side in FIG. 4). That is, the hammer member 23 moves close to the container 3 while being urged, so that the hitting portion 23a comes into contact with the lower wall portion 3c, and the hitting is given to the container 3, and mechanically. An impact force acts.

  Thus, an elastic wave is generated in the container 3 (within the material constituting the container 3) by the mechanical impact force acting on the container 3 by the impact device 22. As in the case of the first embodiment, the elastic wave generated in the container 3 becomes a shock wave by being incident on the transmission medium 5, propagates through the transmission medium 5, and acts on the workpiece 2. The elastic wave generated in the container 3 propagates through the container 3 surrounding the workpiece 2 and acts on the workpiece 2 from multiple directions via the transmission medium 5.

  As described above, in the shock wave machining apparatus 21 according to the present embodiment, as the shock for causing the container 3 to generate a shock wave in the cavity 4 from the outside of the cavity 4 in a state where the workpiece 2 is accommodated in the cavity 4. By receiving a mechanical impact force, a shock wave acts on the workpiece 2 via the container 3 and the transmission medium 5. That is, the shock wave machining apparatus 21 of the present embodiment uses a single or continuous mechanical impact force as an impact for generating a shock wave in the cavity 4.

  Further, in the shock wave processing device 21 of the present embodiment, the number of shock waves applied to the workpiece 2 and the magnitude of the shock wave are adjusted by adjusting the number of times of hitting and the magnitude of force applied to the container 3 by the hitting device 22. Can be adjusted. Thereby, it becomes possible to perform the target process according to the kind, size, etc. of the workpiece 2.

  Thus, in this embodiment, the shock wave generating chamber 6 includes the striking device 22 that applies a mechanical shock force to the container 3 as a means for generating a shock wave, and the striking device 22 generates a shock wave. Let

  As with the first embodiment, the shock wave processing apparatus 21 according to the present embodiment can generate a shock wave having sufficient strength for processing the workpiece 2 such as food with relatively small energy. Improvements can be made. Further, according to the shock wave machining apparatus 21 of the present embodiment, an external device such as a power supply unit is not required in comparison with a configuration that generates a shock wave using electric energy as in the first embodiment, for example. Therefore, it is possible to easily simplify the device configuration.

  The mechanical impact force on the container 3 may be manually applied by using a hammering instrument such as a hammer. Moreover, the location where the mechanical impact force is applied to the container 3 may be a plurality of locations. In addition, in order to obtain a mechanical impact force on the container 3, a configuration using metal ball driving or the like may be employed.

  Further, in a configuration that uses a mechanical impact force to generate a shock wave, the shock wave generation chamber 6 is not necessarily provided. Such a configuration is shown in FIG. 5 as a third embodiment of the present invention. That is, as shown in FIG. 5, the shock wave processing device 31 of this embodiment is applied to the container 3 in the same manner as the second embodiment by the striking device 22 provided outside the cavity 4 (of the container 3). Apply mechanical impact force.

  According to the shock wave machining apparatus 31 of the present embodiment, a simpler apparatus configuration can be realized. In addition, when a mechanical impact force is applied to the container 3, the degree of freedom with respect to the position at which the container 3 is hit is improved.

  A fourth embodiment of the present invention will be described. The shock wave processing apparatus according to the present embodiment is different from the first embodiment in that an impact force caused by an explosion is used to generate a shock wave. For this reason, in this embodiment, about the part which is common in 1st embodiment, it abbreviate | omits description using the same code | symbol.

  As shown in FIG. 6, the shock wave processing apparatus 41 of the present embodiment includes an explosive 42 such as explosive that generates an impact force due to an explosion in the shock wave generating chamber 6 as a structure for generating a shock wave. That is, in the shock wave processing device 41, the explosive 42 is a source of shock waves that act on the workpiece 2.

  The explosive 42 is set at a predetermined position by a support member (not shown) in the shock wave generation space 9 (in the transmission medium 7). The explosive 42 is configured to be detonated by an electric detonator, for example. When the explosive 42 explodes, an impact force due to the explosion acts on the container 3.

  As the explosive 42, those having an appropriate shape and size such as a spherical shape, a rod shape, and a plate shape are used. Moreover, although only one explosive 42 is shown in FIG. 6, a plurality of explosives 42 may be used depending on the size of the cavity 4 or the like. Further, when a plurality of explosives 42 are used, a continuous impact force can be applied to the container 3 by detonating each explosive 42 with different timing.

  The impact force caused by the explosion generated by the explosive 42 is transmitted to the container 3 as a shock wave via the transmission medium 7 in the shock wave generation space 9. As described above, the shock wave is transmitted from the shock wave generating chamber 6 side to the container 3, whereby an elastic wave is generated in the container 3 (within the material constituting the container 3). As in the case of the first embodiment, the elastic wave generated in the container 3 becomes a shock wave by being incident on the transmission medium 5, propagates through the transmission medium 5, and acts on the workpiece 2. The elastic wave generated in the container 3 propagates through the container 3 surrounding the workpiece 2 and acts on the workpiece 2 from multiple directions via the transmission medium 5.

  As described above, in the shock wave machining apparatus 41 according to the present embodiment, as the shock for causing the container 3 to generate a shock wave in the cavity 4 from the outside of the cavity 4 in a state where the workpiece 2 is accommodated in the cavity 4. By receiving an impact force due to the explosion, a shock wave acts on the workpiece 2 via the container 3 and the transmission medium 5. That is, the shock wave processing apparatus 41 of the present embodiment uses an impact force generated by a single or continuous explosion as an impact for generating a shock wave in the cavity 4.

  Further, in the shock wave processing apparatus 41 of the present embodiment, the number of shock waves applied to the workpiece 2 and the magnitude of the shock wave can be adjusted by adjusting the number of explosions by the explosive 42 and the size of the scale. . Thereby, it becomes possible to perform the target process according to the kind, size, etc. of the workpiece 2.

  Thus, in this embodiment, the shock wave generation chamber 6 includes the explosive 42 as a means for generating a shock wave, and the explosive 42 is exploded to generate a shock wave.

  As with the first embodiment, the shock wave processing apparatus 41 according to the present embodiment can generate a shock wave having a strength sufficient for processing the workpiece 2 such as food with a relatively small energy. Improvements can be made. Further, according to the shock wave machining apparatus 41 of the present embodiment, it is easy to obtain the intensity of the shock wave by explosion, and therefore machining in a relatively short time is possible.

  A fifth embodiment of the present invention will be described. As shown in FIG. 7, in the shock wave machining apparatus 51 according to the present embodiment, a diaphragm 13 is interposed between the container 53 that accommodates the workpiece 2 and the shock wave generating chamber 6, and a cavity 54 is formed by the diaphragm 13. And the shock wave generation space 59 are partitioned. In addition, in this embodiment, about the part which is common in 1st embodiment, description is abbreviate | omitted using the same code | symbol.

  The container 53 has an opening on the side where the shock wave generating chamber 6 is adjacent (lower side in FIG. 7). A cavity 54 is formed by closing the opening of the container 53 with the diaphragm 13. The shock wave generating space 59 is formed so as to be adjacent to the cavity 54 through the diaphragm 13 with respect to the container 53. That is, the cavity 54 and the shock wave generating space 59 are formed in a state of being partitioned from each other via the diaphragm 13, and the transmission medium 5 in the cavity 54 is isolated from the transmission medium 7 in the shock wave generating space 59 by the diaphragm 13. Is done.

  Therefore, the housing 8 constituting the shock wave generating chamber 6 is provided such that the opening side faces the diaphragm 13. In other words, the shock wave generating space 59 is formed as a sealed space when the opening formed on one side of the housing 8 is closed by the diaphragm 13. In this manner, the diaphragm 13 is sandwiched between the opening end surface (lower side in FIG. 7) of the container 53 and the opening end surface (upper side in FIG. 7) of the housing 8 constituting the shock wave generating chamber 6. Therefore, it is interposed between the container 53 and the shock wave generating chamber 6.

  The diaphragm 13 is made of a high acoustic impedance material like the container 53. The material constituting the diaphragm 13 and the material constituting the container 53 may be the same or different.

  Similar to the first embodiment, the shock wave machining apparatus 51 of the present embodiment includes a pair of electrodes 10 as means for generating a shock wave. In the shock wave machining apparatus 51, the impact force due to the electric pulse generated between the pair of electrodes 10 is transmitted from the diaphragm 13 to the container 53 as a shock wave via the transmission medium 7 in the shock wave generation space 59. In this manner, the shock wave is transmitted from the shock wave generating chamber 6 side to the diaphragm 13 and the container 53, whereby elastic waves are generated in the diaphragm 13 and the container 53 (in the material constituting the container 53). That is, as described above, the shock wave transmitted to the diaphragm 13 and the container 53 made of the high acoustic impedance material propagates through the diaphragm 13 and the container 53 as an elastic wave.

  The elastic waves generated in the diaphragm 13 and the container 53 propagate to the transmission medium 5 in the cavity 54 while propagating through the diaphragm 13 and the container 53. The elastic wave from the diaphragm 13 and the container 53 propagated to the transmission medium 5 becomes a single or a plurality of continuous shock waves and acts on the workpiece 2 via the transmission medium 5. That is, the elastic wave generated in the diaphragm 13 and the container 53 becomes a shock wave when entering the transmission medium 5, propagates through the transmission medium 5, and acts on the workpiece 2.

  Thus, the shock wave generated by the pair of electrodes 10 in the shock wave generating space 59 of the shock wave generating chamber 6 propagates through the diaphragm 13 and the container 53 surrounding the workpiece 2, thereby causing the workpiece 2 to move. It acts via the transmission medium 5 from multiple directions.

  Specifically, the shock wave acting on the workpiece 2 by the pulse discharge generated between the pair of electrodes 10 is mainly generated in the cavity 54 (transmission medium 5) from the shock wave generating space 59 through the diaphragm 13. Component (see arrow C1 in FIG. 7) and a component that propagates from the diaphragm 13 through the container 53 and enters the cavity 54 (transmission medium 5) from the side wall of the container 53 (see arrow C2 in the figure). And are included. The shock wave acting on the workpiece 2 includes a shock wave obtained by propagating a shock wave (elastic wave) from the transmission medium 7 in the shock wave generation space 59 to the diaphragm 13 and the container 53 through the housing 8 and a cavity. The shock wave etc. which were reflected in the wall surface which forms the cavity 54 by passing the to-be-processed object 2 in 54, etc. are also contained.

  As with the first embodiment, the shock wave processing apparatus 51 of the present embodiment can generate a shock wave having a sufficient strength for processing the workpiece 2 such as food, even with relatively small energy. Improvements can be made.

  A sixth embodiment of the present invention will be described. In comparison with the first embodiment, the shock wave machining apparatus according to the present embodiment mainly has a low acoustic separation between a cavity in which the workpiece 2 is accommodated and a space for generating a shock wave that acts on the workpiece 2. The difference is that a diaphragm of impedance material is provided.

  As shown in FIG. 8, the shock wave machining apparatus 61 of the present embodiment includes a container 63 that accommodates the workpiece 2 and forms a cavity 64 that is filled with the transmission medium 65, as in the first embodiment. The container 63 is made of a high acoustic impedance material. The container 63 includes a base portion 63a configured in a cylindrical shape, and a lid portion 63b that closes an opening on one side (the upper side in FIG. 8) of the base portion 63a.

  As shown in FIG. 8, the shock wave processing device 61 is used in a posture in which the cylindrical axis direction of the cylindrical base portion 63 a constituting the container 63 is the vertical direction (the vertical direction in FIG. 8). Therefore, the upper and lower sides of the base 63a constituting the container 63 are opened, and the upper opening is closed by the lid 63b as described above. And the diaphragm 80 is provided so that the opening part of the lower side of the base 63a may be plugged up. That is, the diaphragm 80 forms the bottom surface portion of the container 63.

  As described above, in the shock wave processing device 61, the cavity 64 is hermetically sealed because the space formed by the inner peripheral surface 63c of the base portion 63a constituting the container 63 is closed from above and below by the lid portion 63b and the diaphragm 80. It is formed as a space. The transmission medium 65 is filled in the cavity 64 as the sealed space. That is, in the shock wave processing device 61 of the present embodiment, the container 63 is formed of the high acoustic impedance material having the acoustic impedance higher than that of the transmission medium 65 while forming the cavity 64 filled with the transmission medium 65 for propagating the shock wave. It functions as a configured transmission container.

  In addition, the opening on the upper side of the base portion 63 a that is blocked by the lid portion 63 b is used as an opening portion for taking the workpiece 2 into and out of the cavity 64. Similar to the first embodiment, the workpiece 2 is set at a predetermined position in the cavity 64 by a support member (not shown).

  The diaphragm 80 includes a support portion 80a that is a support portion for the base portion 63a that constitutes the container 63, and a membrane portion 80b that forms the bottom surface portion of the container 63, and is configured in a substantially bottomed cylindrical shape as a whole. The support portion 80 a is a portion that is formed in a cylindrical shape along the inner peripheral surface 63 c of the container 63. That is, the diaphragm 80 is supported with respect to the container 63 by being fixed in a state where the support portion 80 a is in contact with the inner peripheral surface 63 c of the container 63.

  And the diaphragm 80 is fixed with respect to the base 63a so that the part of the film part 80b may be located in the opening edge part of the lower side of the base 63a. In addition, the structure which does not have the support part 80a may be sufficient as the diaphragm 80. FIG. In such a configuration, the diaphragm 80 is formed as a film-like member, and is attached to the lower end surface of the base 63a from the outside (lower side) of the lower opening of the base 63a, for example. A film portion is formed in the opening. In other words, the diaphragm 80 may be any film that can form a film-like portion covering the opening in the lower opening of the base 63a.

  The diaphragm 80 is made of a low acoustic impedance material. Here, the low acoustic impedance material is a material having an acoustic impedance lower than that of the high acoustic impedance material as described above. As a material constituting the diaphragm 80, for example, a material having a relatively small acoustic impedance with respect to a metal material such as a chemical fiber such as rubber, cotton, hemp, nylon, a silicon material, or a polymer material is used.

As the material constituting the diaphragm 80, a material having an acoustic impedance in the range of 0.1 × 10 ⁶ to 40 × 10 ⁶ Pa · s / m ³ is used. Preferably, the acoustic impedance of the material constituting the diaphragm 80 is in the range of 0.5 × 10 ^{6 to} 20 × 10 ⁶ Pa · s / m ³ . Accordingly, the material constituting the diaphragm 80 has an acoustic impedance of about 1.5 × 10 ⁶ Pa · s / m ³ from the viewpoints of obtaining good workability and relatively low cost. A polymer material is preferably used.

  The shock wave processing device 61 receives the impact for generating a shock wave in the cavity 64 from the lower side of the cavity 64 in a state where the workpiece 2 is accommodated in the cavity 64, whereby the diaphragm 80 and the container 63. , And a shock wave is applied to the workpiece 2 via the transmission medium 65.

  As shown in FIG. 8, in the shock wave processing device 61 of this embodiment, a shock wave generating chamber 66 is formed adjacent to the container 63. The shock wave generating chamber 66 is a chamber for generating a shock wave while being filled with the transmission medium 67. A shock wave generated in the shock wave generation chamber 66 propagates through the container 63 and the transmission medium 65 in the container 63 and acts on the workpiece 2.

  Similarly to the first embodiment, the shock wave generation chamber 66 forms a shock wave generation space 69 that is a space for generating a shock wave by a housing 68 made of resin as a material, and in the shock wave generation space 69, A transmission medium 67 is filled.

  The shock wave generation space 69 is formed so as to be adjacent to the cavity 64 of the container 63 via a diaphragm 80 provided on the side where the shock wave generation chamber 66 is adjacent to the container 63 (lower side in FIG. 8). That is, the cavity 64 and the shock wave generation space 69 are formed in a state of being partitioned from each other via the diaphragm 80, and the transmission medium 65 in the cavity 64 is isolated from the transmission medium 67 in the shock wave generation space 69 by the diaphragm 80. Is done.

  Therefore, the housing 68 constituting the shock wave generation chamber 66 is formed so that one side (the upper side in FIG. 8) is opened, and the side to be opened faces the diaphragm 80 with respect to the container 63. In other words, the shock wave generating space 69 is a sealed space because the opening formed on one side of the housing 68 is closed by the diaphragm 80 provided on the lower side of the container 63 and the lower end surface of the base portion 63a. Formed as. The shapes of the housing 68 and the shock wave generating space 69 are not particularly limited.

  Thus, in the shock wave processing apparatus 61 of the present embodiment, the cavity 64 and the shock wave generating chamber 66 are separated via the diaphragm 80 that is a film-like member made of a low acoustic impedance material. Further, in the shock wave processing device 61, a cylindrical casing 62 in which a container 63 and a housing 68 that forms a shock wave generation chamber 66 formed on the lower side of the container 63 are made of a metal material, a resin material, or the like. It is provided in a state of being housed inside.

  Similar to the first embodiment, the shock wave processing apparatus 61 of the present embodiment includes a pair of electrodes 70 as means for generating a shock wave. The pair of electrodes 70 are provided in a state of projecting into the shock wave generating space 69 and being supported by the casing 62 and the housing 68 by passing through the casing 62 and the housing 68 in the horizontal direction (left-right direction in FIG. 8).

  The pair of electrodes 70 is provided in a state of being insulated from the container 63 by being supported by a resin housing 68. Therefore, when the casing 62 is made of a conductive material such as a metal, an insulating member is interposed between the electrode 70 and the casing 62, so that the electrode 70 is connected to the container 63. Insulated.

  In the shock wave processing device 61, the impact force due to the electric pulse generated between the pair of electrodes 70 is transmitted to the diaphragm 80 and the container 63 as a shock wave via the transmission medium 67 in the shock wave generation space 69. Thus, the shock wave generated by the pair of electrodes 70 in the shock wave generating space 69 propagates through the diaphragm 80 and the container 63 surrounding the workpiece 2, thereby transmitting the transmission medium from multiple directions to the workpiece 2. Acts through 5.

  Specifically, a part of the shock wave generated by the pulse discharge generated between the pair of electrodes 70 in the shock wave generating chamber 66 propagates into the cavity 64 (in the transmission medium 65) through the diaphragm 80 (arrow D1). reference). Here, since the diaphragm 80 is made of a low acoustic impedance material, the shock wave propagating through the diaphragm 80 into the cavity 64 (inside the transmission medium 65) has a small attenuation and is smaller than the workpiece 2. Works effectively.

  On the other hand, a part of the shock wave generated by the pulse discharge generated between the pair of electrodes 70 in the shock wave generation chamber 66 is transmitted through the transmission medium 67 or through the transmission medium 67 and the housing 68 to the container 63 (base 63a). Is incident on. The shock wave incident on the container 63 propagates through the container 63 as an elastic wave, and enters the transmission medium 65 in the cavity 64 to act on the workpiece 2 as a single or continuous plurality of shock waves (arrows). D2).

  The shock wave (arrow D2) passing through the container 63 acts on the workpiece 2 through a longer distance than the shock wave (arrow D1) passing through the diaphragm 80. On the other hand, since the shock wave (arrow D2) passing through the container 63 propagates through the container 63 composed of the high acoustic impedance material, the shock wave propagates through the diaphragm 80 and the transmission medium 65 composed of the low acoustic impedance material. The propagation speed is fast. Therefore, the shock wave (arrow D2) passing through the container 63 is combined with the shock wave (arrow D1) passing through the diaphragm 80 and acts on the workpiece 2.

  That is, in the shock wave processing device 61 of the present embodiment, the difference in timing at which the shock wave acts on the workpiece 2 based on the propagation distance of the shock wave is alleviated by the diaphragm 80 made of the low acoustic impedance material. Thereby, the shock wave generated in the shock wave generating chamber 66 effectively acts on the workpiece 2 in the cavity 64 isolated from the shock wave generating space 69 by the diaphragm 80. The shock wave acting on the workpiece 2 includes a shock wave reflected by a wall surface that forms the cavity 64 by passing through the workpiece 2 in the cavity 64 and the like.

  As described above, according to the shock wave machining apparatus 61 of the present embodiment, in addition to obtaining the effects of the above-described embodiments, the diaphragm 80 made of a low acoustic impedance material can be used for the workpiece 2. About the shock wave which acts via a different path | route, the difference of the timing which acts based on the difference of propagation distance can be relieve | moderated, and a shock wave can be made to act on the workpiece 2 effectively. Further, the shock wave acting on the workpiece 2 via the diaphragm 80 can be reduced in attenuation by the diaphragm 80 made of a low acoustic impedance material. A shock wave can be applied to.

  A seventh embodiment of the present invention will be described. As shown in FIG. 9, the shock wave machining apparatus 91 according to the present embodiment works the workpiece 92 by applying a shock wave to the workpiece 92. In FIG. 9, a plurality of jatropha seeds are shown as the workpiece 92. Oil refined from jatropha seeds is used as a material for vegetable biodiesel fuel.

  The shock wave machining apparatus 91 includes a container portion 93 that forms a cavity 94 that accommodates the workpiece 92. A cavity 94 that is an internal space of the container portion 93 is formed as a sealed space. The cavity 94 is filled with water 95 as a transmission medium for propagating shock waves.

  The container part 93 is configured in a substantially cylindrical shape as a whole, and is provided such that the cylinder axis direction is the vertical direction (the vertical direction in FIG. 9). The container part 93 includes a stainless steel case (hereinafter referred to as “upper case”) 93a, an aluminum pipe member 93b, and a stainless steel lid 93c, and is entirely composed of a high acoustic impedance material. .

  In the container part 93, the upper case 93a is comprised by the cylinder shape, and the cylindrical pipe member 93b is provided in the state inserted in the upper case 93a by the inner peripheral side of this upper case 93a. That is, the container part 93 has a two-layer structure including an upper case 93a constituting the outer peripheral part and a pipe member 93b constituting the inner peripheral part. As the pipe member 93b, one having a thickness (wall thickness) of at least about 20 mm is suitably used from the viewpoint of reflecting shock waves. The upper opening in the cylindrical part constituted by the upper case 93a and the pipe member 93b is closed by the lid 93c.

  Therefore, in the shock wave machining apparatus 91, a cavity 94 is formed by the inner peripheral surface of the pipe member 93b and the lower surface of the lid 93c, and the cavity 94 is filled with water 95 as a transmission medium as described above. As described above, in the shock wave processing apparatus 91 of the present embodiment, the container portion 93 forms the cavity 94 filled with the water 95 as the transmission medium for propagating the shock wave, and has a higher acoustic impedance than the water 95. It functions as a transmission container portion made of an acoustic impedance material.

  The shock wave machining apparatus 91 receives the impact for generating a shock wave in the cavity 94 from the outside of the cavity 94 in a state where the workpiece 92 is accommodated in the cavity 94, whereby the container part 93 A shock wave is applied to the workpiece 92 via the water 95.

  The workpiece 92 accommodated in the cavity 94 is placed in a predetermined position in the cavity 94 by a support member (not shown) in a state where the workpiece 92 is placed in a transparent film-like protective material 92a such as a vinyl bag or a polyethylene bag. Set to Here, the workpiece 92 is taken in and out of the cavity 94 from the upper case 93a closed by the lid 93c and the upper opening of the pipe member 93b.

  In the container portion 93, the pipe member 93 b is provided so as to be removable from the upper case 93 a, and the workpiece 92 is inserted into the upper case 93 a by supporting the workpiece 92. May be adopted. Further, it is preferable that the inside of the protective material 92 a in which the workpiece 92 is put is decompressed to a vacuum state from the viewpoint of enhancing the shock wave transmission action on the workpiece 92 and the protection action of the workpiece 92.

  As shown in FIG. 9, in the shock wave machining apparatus 91 of this embodiment, a shock wave generating chamber 96 is formed adjacent to the container part 93. The shock wave generating chamber 96 is a room for generating a shock wave while being filled with water 95 as a transmission medium. A shock wave generated in the shock wave generation chamber 96 propagates through the water 95 and the container portion 93 and acts on the workpiece 92.

  The shock wave generation chamber 96 includes a housing 98 made of resin, and a stainless steel case (hereinafter referred to as “lower case”) 98 a that covers substantially the entire outside of the housing 98. The housing 98 forms a shock wave generation space 99 that is a space for generating a shock wave.

  The shock wave generating space 99 forms an integral (continuous) space with the cavity 94 formed in the pipe member 93 b in the container portion 93. Therefore, the housing 98 is formed so that one side (the upper side in FIG. 9) is open, and the side to be opened faces the cavity 94.

  The pipe member 93b forming the cavity 94 is provided in a state of being fitted to a recess 98b formed in the opening end portion of the housing 98 from above with respect to the housing 98. In a state in which the pipe member 93 b is fitted in the recess 98 b of the housing 98, the inner periphery that is substantially continuous by the inner peripheral surface of the pipe member 93 b that forms the cavity 94 and the inner peripheral surface of the housing 98 that forms the shock wave generating space 99. A surface portion is formed. Thus, water 95 is filled in an integral space formed by the cavity 94 and the shock wave generation space 99.

  The lower case 98a allows fitting of the pipe member 93b to the recess 98b and covers substantially the entire housing 98 from the outside. A part of the upper part of the lower case 98a is sandwiched between the upper case 93a and the housing 98 constituting the container portion 93. That is, the upper case 93a is provided above the portion of the lower case 98a that covers the upper side of the housing 98.

  The shock wave machining apparatus 91 according to the present embodiment includes a pair of brass electrodes 100 disposed as opposed to each other with a predetermined interval as means for generating a shock wave. Each of the pair of brass electrodes 100 has a substantially conical shape, and is arranged in a state where the apex sides thereof face each other. As in the first embodiment, a power supply unit having a capacitor or the like is connected to the pair of brass electrodes 100 via a conductive wire 101.

  The pair of brass electrodes 100 are supported by the tip portions of the conducting wires 101 that penetrate the side walls facing each other in the housing 98 and the lower case 98a in the horizontal direction (left-right direction in FIG. 9), so In a state of facing each other. The pair of brass electrodes 100 are provided in a state of being insulated from the container portion 93 by supporting the conductive wire 101 by a resin housing 98. Therefore, the conducting wire 101 penetrating the stainless lower case 98a is insulated from the lower case 98a by interposing an insulating member between the lower case 98a and the like.

  The pair of brass electrodes 100 are provided in the shock wave generating space 99 in a state where a predetermined interval is provided between the tips (the tips do not contact each other). An interval provided between the pair of brass electrodes 100 is appropriately set, for example, to a dimension that maximizes the energy of the shock wave acting on the workpiece 92, corresponding to the water 95 filled in the shock wave generation chamber 96. The

  Thus, in this embodiment, the shock wave generation chamber 96 includes a pair of brass electrodes 100 arranged as opposed to each other with a predetermined interval as means for generating a shock wave, and a pair of brass electrodes A shock wave is generated by discharging in water 95 with 100. The number of brass electrodes 100 provided in the shock wave generation chamber 96 is not limited, and three or more brass electrodes 100 may be provided in the shock wave generation chamber 96.

  Further, in the shock wave machining apparatus 91, the configuration including the container portion 93 and the shock wave generation chamber 96 described above is accommodated in a casing 102 made of metal, resin, or the like. Therefore, the conducting wire 101 connected to the pair of brass electrodes 100 extends out of the casing 102 and is connected to a power supply unit (not shown).

  The shock wave machining apparatus 91 of the present embodiment having the above-described configuration processes the workpiece 92 by the following operation. When the workpiece 92 is processed, a single or continuous pulse discharge is generated between the pair of brass electrodes 100 by electricity supplied from the power supply unit.

  The impact force caused by the electric pulse generated between the pair of brass electrodes 100 acts on the workpiece 92 as a shock wave via the water 95 in the shock wave generation space 99. In addition to the shock wave acting directly between the pair of brass electrodes 100 via the water 95, a shock wave acting on the work piece 92 also acts on the work piece 92 and a portion constituting the shock wave generating chamber 96. .

  Specifically, a shock wave acting on the workpiece 92 due to a pulse discharge generated between the pair of brass electrodes 100 is generated in the pipe member 93b (within the material constituting the pipe member 93b) from within the shock wave generating space 99. A shock wave that propagates as an elastic wave and then acts through the water 95 in the cavity 94 is included. Similarly, the shock wave acting on the workpiece 92 is shock wave acting from the shock wave generating space 99 through the housing 98, the lower case 98a, the upper case 93a, the lid 93c, etc., and the workpiece in the cavity 94. A shock wave or the like reflected by a wall surface that passes through 92 and forms the cavity 94 is also included.

  When the shock wave acts on the workpiece 92 in this way, the workpiece 92 contracts due to the action of the pressure change, and subsequently, the workpiece 92 expands at a stretch by the reaction. Due to the contraction and expansion due to the action of the shock wave, the cell wall and the like of the workpiece 92 are destroyed, and the workpiece 92 is softened or powdered.

  For example, when the workpiece 92 is Jatropha seeds, the Jatropha seeds processed by the shock wave processing device 91 are in a softened state because the cell walls and the like are broken while maintaining the original shape. According to the seed of Jatropha softened by the action of the shock wave by the shock wave processing device 91, as described above, when refining the oil used as the material of the plant biodiesel fuel, it is compared with the seed of Jatropha having the original hardness Squeezing efficiency is improved, and the time, energy consumption and waste amount required for squeezing can be reduced.

  As described above, in the shock wave machining apparatus 91, the workpiece 94 in the container portion 93 is passed through the member constituting the container portion 93 and the shock wave generation chamber 96 surrounding the workpiece 92, thereby the cavity 94. Since the shock wave acts from various directions including the shock wave reflected inside, the shock wave can be effectively acted on the workpiece 92. That is, the energy for generating a shock wave can be efficiently applied to the workpiece 92 as a shock wave. As described above, the shock wave machining apparatus 91 according to the present embodiment can generate a shock wave with sufficient strength for machining the workpiece 92 even with relatively small energy, and can improve versatility. .

  In the shock wave machining apparatus 91 of the present embodiment, the workpiece 92 is adjusted by adjusting the number and size of pulse discharges generated between the pair of brass electrodes 100 in the shock wave generation chamber 96 as in the first embodiment. It is possible to adjust the number of shock wave loads and the magnitude of the shock wave to be applied.

  Further, in the shock wave machining apparatus 91 of the present embodiment, an integral space is formed by the cavity 94 and the shock wave generating space 99. However, the cavity 94 and the shock wave generating space 99 have a high acoustic impedance as described above, for example. The structure partitioned off by the diaphragm comprised with material or a low acoustic impedance material may be employ | adopted.

  Moreover, about the constituent material of each member which comprises the container part 93, if it is a high acoustic impedance material, it will not specifically limit. Therefore, for example, the upper case 93a made of stainless steel may be made of aluminum or the like, and the pipe member 93b made of stainless steel may be made of stainless steel (SUS) or the like, and the lid made of stainless steel 93c may be made of aluminum or the like. Further, in the shock wave machining apparatus 91 of the present embodiment, the magnitude of the shock wave that acts on the workpiece 92 is adjusted by adjusting the constituent material and thickness of the pipe member 93b that accommodates the workpiece 92. be able to.

  The present invention relates to a device for processing food by shock waves for the purpose of softening, milling, etc., a device for sterilization by shock waves, a device for disassembling various machines such as electronic equipment and household appliances, and other processing devices using shock waves It can be used in general.

  Further, according to the shock wave processing apparatus according to the present invention, for example, the yam is made into a state of being thickened, the core portion of the pineapple which is usually hard and cannot be eaten is softened, and the hamburger dough is mixed. It is possible to carry out the cooking process and to soak the pickled liquid in the vegetables by instantaneous processing, and various possibilities for preparation of food and food processing industry are expected.

  In addition, according to the shock wave processing apparatus according to the present invention, for example, when obtaining rice flour by pulverizing rice with a shock wave, the taste and flavor are impaired by frictional heat generated by grinding or hitting the rice. Moreover, since the bacteria adhering to the rice can be almost killed by the sterilization action by the shock wave, it is possible to obtain rice flour having good quality and good storage stability. For this reason, the shock wave processing apparatus according to the present invention can be suitably used for milling rice flour instead of wheat flour with a low self-sufficiency rate in Japan, and can contribute to an improvement in food self-sufficiency rate. The milling industry has great applicability.

DESCRIPTION OF SYMBOLS 1 Shock wave processing apparatus 2 Work piece 3 Container (transmission container part)
4 Cavity 5 Transmission Medium 6 Shock Wave Generation Chamber 7 Transmission Medium 10 Electrode 14 Bubble Generation Device (Bubble Generation Means)
22 impact device 42 explosive 80 diaphragm 91 shock wave processing device 92 work piece 93 container part (transmission container part)
94 Cavity 95 Water 96 Shock wave generation chamber 100 Brass electrode

Claims (5)

A shock wave machining apparatus for machining a workpiece by applying a shock wave to the workpiece,
Forming a cavity filled with a transmission medium for propagating a shock wave, and including a transmission container portion made of a high acoustic impedance material having an acoustic impedance higher than that of the transmission medium;
In the transmission container portion, a shock wave generation chamber is formed adjacent to the shock absorber for filling the transmission medium and forming a shock wave generation space for generating a shock wave.
The cavity and the shock wave generating space are formed in a state of being partitioned from each other through a wall portion made of a metal that is the high acoustic impedance material,
In a state where the workpiece is accommodated in the cavity, the transmission container part receives an impact for generating a shock wave in the cavity from the outside of the cavity, so that the transmission container part and the transmission are transmitted from the wall part. A shock wave machining apparatus that causes a shock wave to act on a workpiece through a medium. The shock wave generation chamber includes at least a pair of electrodes arranged in a state of being opposed to each other at a predetermined interval as means for generating a shock wave, and generates a shock wave by performing discharge with the electrodes.
The shock wave machining apparatus according to claim 1 , wherein The shock wave generating chamber includes a striking device that applies a mechanical shock force to the transmission container as a means for generating a shock wave, and generates a shock wave by the striking device.
The shock wave machining apparatus according to claim 1 , wherein The shock wave generation chamber includes an explosive as a means for generating a shock wave, and generates a shock wave by exploding the explosive.
The shock wave machining apparatus according to claim 1 , wherein Wherein the said transmission medium to be filled into the cavity is a liquid, the shock wave processing apparatus according to any one of claims 1-4, characterized in that it comprises a bubble generating means for generating a bubble in the liquid body.

Images