阅读说明：本技术 一种基于Tesla阀逆向流动原理的新型乐器 (Novel musical instrument based on Tesla valve reverse flow principle ) 是由 钱锦远 冯乐耘 金晨 王昊文 林煜琛 于 2019-08-07 设计创作，主要内容包括：本发明公开了一种新型管乐器,其结构包括吹奏管、Tesla阀变音腔体和中心主管；主管上设有八个按音孔和两个校音孔,该管乐器吹奏管末端通过螺纹接头与Tesla阀变音腔体相连,Tesla阀变音腔体通过焊接与中心主管相连接。Tesla阀变音腔体具有改变内部流场的能力,在原本普通箫声的基础上产生气流声,可以有效地改变萧原本的音色。本发明提出了一种新型管乐器,结构新颖,音色独特,可进行广泛推广与应用。(The invention discloses a novel wind instrument, which structurally comprises a playing pipe, a Tesla valve variable sound cavity and a central main pipe; the main pipe is provided with eight sound pressing holes and two sound correcting holes, the tail end of the wind instrument playing pipe is connected with the Tesla valve sound changing cavity through a threaded connector, and the Tesla valve sound changing cavity is connected with the central main pipe through welding. The Tesla valve sound changing cavity has the capacity of changing an internal flow field, generates airflow sound on the basis of the original common vertical bamboo flute sound, and can effectively change the original timbre. The invention provides a novel wind instrument which is novel in structure, unique in tone and capable of being widely popularized and applied.)

1. A novel musical instrument based on the Tesla valve reverse flow principle is characterized by comprising a playing pipe (16), a Tesla valve sound-changing cavity and a central main pipe (17); the Tesla valve variable-pitch cavity body consists of a Tesla valve variable-pitch cavity body main pipe (18), a first Tesla valve variable-pitch cavity body branch pipe (3), a second Tesla valve variable-pitch cavity body branch pipe (4) and a third Tesla valve variable-pitch cavity body branch pipe (5); the Tesla valve sound-changing cavity main pipe (18) is connected with a horizontal section by an inclined section to form a zigzag shape, the tail end of the inclined section is communicated with the playing pipe (16), and the tail end of the horizontal section is communicated with the central main pipe (17); the tubular shaft of the Tesla valve variable-sound cavity main pipe (18) is taken as a center, the first Tesla valve variable-sound cavity branch pipe (3), the second Tesla valve variable-sound cavity branch pipe (4) and the third Tesla valve variable-sound cavity branch pipe (5) are arranged at equal angles along the periphery of the Tesla valve variable-sound cavity main pipe (18), and the three branch pipes are identical in structure; each branch pipe is divided into a straight pipe section and an arc pipe section along the air inlet direction, and the straight pipe section is in tangent connection with the arc pipe section; an inlet of the straight pipe section and an outlet of the arc pipe section are respectively communicated with the horizontal section of the Tesla valve variable sound cavity main pipe (18), so that airflow in the oblique section of the Tesla valve variable sound cavity main pipe (18) is divided when entering the horizontal section, and the airflow entering each branch pipe is guided and then is converged with the airflow in the horizontal section again in a countercurrent mode; the central main pipe (17) is provided with a plurality of press sound holes and a plurality of calibration sound holes.

2. A novel musical instrument based on the Tesla valve reverse flow principle as claimed in claim 1, characterized in that said central main tube (17) is provided with eight spaced sound pressing holes and two sound aligning holes along the way; among the eight sound pressing holes, a first sound pressing hole (6) is closest to a Tesla valve sound changing cavity and is positioned on the left side of a ridge line at the bottom of a central main pipe (17) in a blowing and holding state, a second sound pressing hole (7), a third sound pressing hole (8), a fourth sound pressing hole (9), a fifth sound pressing hole (10), a sixth sound pressing hole (11) and a seventh sound pressing hole (12) are all arranged along the ridge line at the top of the central main pipe (17), and an eighth sound pressing hole (13) is positioned on the right side of the ridge line at the top of the central main pipe (17) in the blowing and holding state; of the two calibrating holes, a first calibrating hole (14) and a second calibrating hole (15) are symmetrically distributed on two sides of the bottom ridge line of the central main pipe (17) in the playing and holding state.

3. A new musical instrument based on the reverse flow principle of Tesla valves as claimed in claim 1, characterized in that the angle between the inclined section and the horizontal section in the Tesla valve variable sound cavity main pipe (18) is 135 °, the straight pipe section of the first Tesla valve variable sound cavity branch pipe (3) is coaxial with the inclined section of the Tesla valve variable sound cavity main pipe (18); the included angles between the straight pipe sections of the three branch pipes and the horizontal section of the main pipe (18) of the sound changing cavity of the Tesla valve are all 45 degrees.

4. A novel musical instrument based on the Tesla valve reverse flow principle as claimed in claim 1, characterized in that the blowing mouth at the end of the blowing tube (16) is U-shaped.

5. A novel musical instrument based on the Tesla valve reverse flow principle as claimed in claim 4, wherein the U-shaped mouthpiece is draft at 30 degrees at the arc.

6. A new musical instrument based on the Tesla valve reverse flow principle as claimed in claim 1, characterized in that the blowing pipe (16) is detachably connected with the Tesla valve variable sound cavity main pipe (18) through a threaded joint (2).

7. A new musical instrument based on the reverse flow principle of the Tesla valve according to claim 1, characterised in that the main pipe of the pitch chamber of the Tesla valve (18) is connected to the main central pipe (17) by welding.

8. a novel musical instrument based on the Tesla valve reverse flow principle as claimed in claim 1, wherein the press hole and the tuning hole are both circular holes.

9. A novel musical instrument based on the Tesla valve reverse flow principle as claimed in claim 7, wherein the aperture of the circular hole is 10 mm.

10. A novel musical instrument based on the Tesla valve reverse flow principle as claimed in claim 1, characterized in that the material of the instrument is an aluminium alloy.

Technical Field

The invention relates to a novel musical instrument based on a Tesla valve reverse flow principle, in particular to a novel musical instrument with multiple tubes which jointly vibrate and produce sound and similar 'Humai' effect.

background

The vertical bamboo flute is a traditional musical instrument in China, and nowadays, many people learn a happy musical instrument. However, in the course of learning, because of the mouth-to-mouthpiece musical instrument, it cannot be used by many people due to the sanitary problem. There are many patents disclosing inventions modifying the structure: for example, CN201521018094.1 a metal vertical bamboo flute, CN201220449846.X a novel short vertical bamboo flute, CN201320302513.9 a pocket vertical bamboo flute, and CN201320302505.4 a pocket gift vertical bamboo flute, the utility model reserves the structure of the original vertical bamboo flute, and only modifies the size and the material. The solution to the hygiene problem is simply to make it easy to clean. But washing the instrument itself may affect the performance of the instrument itself.

In the novel musical instrument based on the flute modifying structure on the market, the playing difficulty of some products is reduced by modifying the structure. But lack changes to its timbre. In the invention patent CN201320746230.3, the invention discloses a double bass bend pipe flute, which comprises the following components: although the structure is improved, the music instrument is only convenient to play and does not change the tone.

Disclosure of Invention

aiming at the current situation that the traditional musical instrument is poor in sound layering during playing, a variable-tone cavity designed by a Tesla valve is introduced based on the existing flute-vertical bamboo flute musical instrument bluebook, and the variable-tone cavity not only utilizes multi-pipe vibration to produce a chord on the basis of the original and sound of the flute, but also generates a unique mute airflow sound, greatly increases the layering of the sound, and is a novel musical instrument. Aiming at the condition that the mouth-blowing musical instrument is not sanitary enough in the occasion of being used by a plurality of people, the invention uses the thread structure to disassemble and replace the blowing pipe, so as to solve the sanitary problem when the mouth-blowing musical instrument is used by a plurality of people.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

A novel musical instrument based on the Tesla valve reverse flow principle comprises a playing pipe, a Tesla valve sound-changing cavity and a central main pipe; the Tesla valve variable-pitch cavity body consists of a Tesla valve variable-pitch cavity body main pipe, a first Tesla valve variable-pitch cavity body branch pipe, a second Tesla valve variable-pitch cavity body branch pipe and a third Tesla valve variable-pitch cavity body branch pipe; the Tesla valve variable-pitch cavity main pipe is formed by connecting an inclined section and a horizontal section to form a fold line shape, the tail end of the inclined section is communicated with the playing pipe, and the tail end of the horizontal section is communicated with the central main pipe; the tubular shaft of the Tesla valve variable-sound cavity main pipe is taken as a center, the first Tesla valve variable-sound cavity branch pipe, the second Tesla valve variable-sound cavity branch pipe and the third Tesla valve variable-sound cavity branch pipe are arranged at equal angles along the periphery of the Tesla valve variable-sound cavity main pipe, and the three branch pipes are identical in structure; each branch pipe is divided into a straight pipe section and an arc pipe section along the air inlet direction, and the straight pipe section is in tangent connection with the arc pipe section; the inlet of the straight pipe section and the outlet of the arc pipe section are respectively communicated with the horizontal section of the main pipe of the Tesla valve sound-changing cavity, so that the airflow in the oblique section of the main pipe of the Tesla valve sound-changing cavity is divided when entering the horizontal section, and the airflow entering each branch pipe is guided and then is converged with the airflow in the horizontal section again in a countercurrent mode; the center main pipe is provided with a plurality of press sound holes and a plurality of calibration sound holes.

Preferably, eight sound pressing holes and two sound correcting holes are arranged on the central main pipe at intervals along the way; among the eight sound pressing holes, the first sound pressing hole is closest to the Tesla valve sound changing cavity and is positioned on the left side of the bottom ridge line of the central main pipe in the playing and holding state, the second sound pressing hole, the third sound pressing hole, the fourth sound pressing hole, the fifth sound pressing hole, the sixth sound pressing hole and the seventh sound pressing hole are all arranged along the top ridge line of the central main pipe, and the eighth sound pressing hole is positioned on the right side of the top ridge line of the central main pipe in the playing and holding state; of the two calibrating holes, the first calibrating hole and the second calibrating hole are symmetrically distributed on two sides of the bottom ridge line of the central main pipe in the playing and holding state.

Preferably, the included angle between the inclined section and the horizontal section in the Tesla valve variable sound cavity main pipe is 135 degrees, and the straight pipe section of the first Tesla valve variable sound cavity branch pipe is coaxial with the inclined section of the Tesla valve variable sound cavity main pipe; the included angles between the straight pipe sections of the three branch pipes and the horizontal section of the main pipe of the sound changing cavity of the Tesla valve are all 45 degrees.

Preferably, the blowing opening at the tail end of the blowing tube is U-shaped.

Further, the U-shaped blowing port is subjected to die drawing at the arc position by 30 degrees.

Preferably, the playing pipe is detachably connected with the main pipe of the Tesla valve sound-changing cavity through a threaded connector.

preferably, the Tesla valve sound-changing cavity main pipe and the central main pipe are connected in a welding mode.

Preferably, the sound pressing hole and the sound correcting hole are both round holes.

Further, the aperture of the round hole is 10 mm.

Preferably, the musical instrument is made of an aluminum alloy.

Compared with the prior art, the technical scheme of the invention has the following advantages:

(1) The novel musical instrument based on the Tesla valve reverse flow principle of the invention applies the Tesla valve principle to the field of musical instruments for the first time, and is mainly applied to devices such as heat exchangers and microreactors.

(2) the novel musical instrument based on the Tesla valve reverse flow principle can generate obvious airflow sound on the basis of the original common vertical bamboo flute sound, and forms a unique effect similar to wheat calling;

(3) The novel musical instrument based on the Tesla valve reverse flow principle is added with the replaceable playing pipe design of threaded connection, so that the sanitary problem of a multi-person common musical instrument is solved;

(4) The novel musical instrument based on the Tesla valve reverse flow principle can realize that the Tesla valve variable sound cavity increases edge sound, so that a player can more easily make a pleasant sound under the condition of lower air consumption, and the playing difficulty and the working strength are reduced;

(5) Compared with the common vertical bamboo flute, the novel musical instrument based on the Tesla valve reverse flow principle, which is disclosed by the invention, is more interesting and attractive in shape due to the addition of the Tesla valve variable-tone cavity.

Drawings

FIG. 1 is a semi-sectional view of a novel musical instrument based on the Tesla valve reverse flow principle according to the present invention;

FIG. 2 is a partial enlarged view of a Tesla valve variable-tone cavity;

FIG. 3 is a schematic view of two tuning holes according to the present invention;

In the figure: 1. a playing pipe; 2. a threaded joint; 3. a first Tesla valve variable-sound cavity branch pipe; 4. a second Tesla valve variable-sound cavity branch pipe; 5. a third Tesla valve variable-sound cavity branch pipe; 6. a first sound-pressing hole; 7. a second sound-pressing hole; 8. a third sound-pressing hole; 9. a fourth sound-pressing hole; 10. a fifth sound pressing hole; 11. a sixth sound-pressing hole; 12. a seventh sound-pressing hole; an eighth sound-pressing hole (13); 14. a first tone correcting hole; 15. a second calibration hole; 16. a playing pipe; 17. a central main tube; 18. tesla valve variable sound cavity main pipe.

Detailed Description

The invention will be further elucidated and described with reference to the drawings and the detailed description. The technical features of the embodiments of the present invention can be combined correspondingly without mutual conflict.

In this embodiment, the novel musical instrument based on the Tesla valve reverse flow principle shown in fig. 1 is made of aluminum alloy as a main material, and the main structure of the instrument includes three parts, namely a playing pipe 16, a Tesla valve variable sound cavity and a central main pipe 17. The structure of each portion is described in detail below.

the playing tube 16 is a tube body for the user to play, and has a main body portion with an outer diameter of 28mm and an inner diameter of 24mm, wherein the cross section of the playing mouth at the end is U-shaped. And in order to facilitate the generation of edge tones, the model is drawn for 30 degrees at the arc position of the blowing opening.

The Tesla valve variable-tone cavity is a deformation of a classical model Tesla valve, has the capacity of changing an internal flow field, generates airflow sound on the basis of the original common vertical bamboo flute sound, and can effectively change the original tone. The specific structure is as shown in fig. 2, and the device is composed of a Tesla valve variable sound cavity main pipe 18, a first Tesla valve variable sound cavity branch pipe 3, a second Tesla valve variable sound cavity branch pipe 4 and a third Tesla valve variable sound cavity branch pipe 5. The Tesla valve sound-changing cavity main pipe 18 is formed by connecting an inclined section and a horizontal section to form a zigzag shape, the tail end of the inclined section is communicated with the playing pipe 16, and the tail end of the horizontal section is communicated with the central main pipe 17. The first Tesla valve variable sound cavity branch pipe 3, the second Tesla valve variable sound cavity branch pipe 4 and the third Tesla valve variable sound cavity branch pipe 5 are arranged along the periphery of the Tesla valve variable sound cavity main pipe 18 at equal angles with the tubular shaft of the Tesla valve variable sound cavity main pipe 18 as the center. The included angle between the planes of any two branch pipes is 120 degrees. The three branch pipes have the same structure, each branch pipe is divided into a straight pipe section and an arc pipe section along the air inlet direction, and the straight pipe section is in tangent connection with the arc pipe section. The inlet of the straight pipe section and the outlet of the circular arc pipe section are respectively communicated with the horizontal section of the Tesla valve sound-changing cavity main pipe 18, so that the airflow in the oblique section of the Tesla valve sound-changing cavity main pipe 18 is divided when entering the horizontal section, the airflow entering each branch pipe is discharged from the outlet of the circular arc pipe section to be converged with the airflow in the horizontal section again in a countercurrent mode after being guided by the straight pipe section and the circular arc pipe section, and the specific countercurrent angle can be adjusted. In the embodiment, the inner diameter of the main pipe 18 of the Tesla valve sound-changing cavity is 2.2cm, and the outer diameter is 2.4 cm; the inner diameter of the three branch pipes is 1.2cm, and the outer diameter is 1.6 cm. The included angle of the inclined section and the horizontal section in the Tesla valve variable sound cavity main pipe 18 is 135 degrees, and the straight pipe section of the first Tesla valve variable sound cavity branch pipe 3 is coaxial with the inclined section of the Tesla valve variable sound cavity main pipe 18, so that a Tesla valve structure is formed. The included angles between the straight pipe sections of the three branch pipes and the horizontal section of the main pipe 18 of the Tesla valve sound changing cavity are 45 degrees, so that the purpose is to form gas sound conveniently and realize common chord of the branch pipes.

In addition, in this embodiment, the connecting position of the playing pipe 16 and the Tesla valve sound-changing cavity main pipe 18 is provided with matching threads, the playing pipe and the Tesla valve sound-changing cavity main pipe are connected by threads, the pitch diameter of the threads is 2.5cm, the number of heads is 1, the thread pitch is 2 degrees, the rotating direction is 45 degrees, the thread depth is 2cm, and the chamfer angle is 1 × 45 °. The detachable connection is designed to allow the playing tube 16 to be replaced to facilitate simultaneous use of the instrument by different users.

the Tesla valve sound-changing cavity main pipe 18 and the central main pipe 17 are connected in a welding mode. The central main pipe 17 is provided with a plurality of press sound holes and a plurality of calibration sound holes. In this embodiment, following the conventional eight-hole flute structure, eight spaced tone holes and two tone correction holes are provided on the central main pipe 17. Among the eight press the sound hole, first press sound hole 6 and be closest to the Tesla valve sound variation cavity, and be located the central person in charge 17 bottom ridge line left side under the state of gripping of playing, the second press sound hole 7, the third press sound hole 8, the fourth press sound hole 9, the fifth press sound hole 10, the sixth press sound hole 11, the seventh press sound hole 12 all follow the central person in charge 17 top ridge line setting, the eighth press sound hole 13 is located the central person in charge 17 top ridge line right side under the state of gripping of playing. Of the two calibration holes, a first calibration hole 14 and a second calibration hole 15 are symmetrically distributed on two sides of the bottom ridge line of the central main pipe 17 in the playing and holding state. The sound pressing hole and the sound correcting hole are round holes, and the aperture is 10 mm. This arrangement is for the convenience of the user's grip.

When the musical instrument is played, the technique is basically the same as that of the eight-hole vertical bamboo flute, and the sound holes corresponding to the fingers of the left hand are as follows: the left thumb corresponds to the first sound pressing hole 6; the left index finger corresponds to the second sound pressing hole 7; the middle finger of the left hand corresponds to the third sound pressing hole 8; the left-hand ring finger corresponds to the fourth tone hole 9. The sound holes corresponding to the fingers of the right hand are as follows: the index finger of the right hand corresponds to the fifth sound-pressing hole 10; the middle finger of the right hand corresponds to the sixth sound-pressing hole 11; the ring finger of the right hand corresponds to the seventh sound-pressing hole 12; the small thumb of the right hand corresponds to the eighth tonehole 13. In the actual playing process of the musical instrument, the instrument can further generate obvious airflow sound on the basis of the original common vertical bamboo flute sound to form a unique effect similar to the original music, and edge sound can be increased due to the existence of the Tesla valve variable sound cavity, so that a player can more easily make a pleasant sound under the condition of smaller air consumption.

The above-described embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, the technical scheme obtained by adopting the mode of equivalent replacement or equivalent transformation is within the protection scope of the invention.