JPH01142416A - Ultrasonic wave level detector - Google Patents
Ultrasonic wave level detectorInfo
- Publication number
- JPH01142416A JPH01142416A JP62301288A JP30128887A JPH01142416A JP H01142416 A JPH01142416 A JP H01142416A JP 62301288 A JP62301288 A JP 62301288A JP 30128887 A JP30128887 A JP 30128887A JP H01142416 A JPH01142416 A JP H01142416A
- Authority
- JP
- Japan
- Prior art keywords
- container
- ultrasonic
- ultrasonic wave
- receiver
- transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000843 powder Substances 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims description 33
- 239000008187 granular material Substances 0.000 claims description 18
- 238000010586 diagram Methods 0.000 description 7
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 241000208195 Buxaceae Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、飲料自動販売機におけるコーヒー等の粉粒体
原料容器中の残量検出などに用いる透過形の超音波レベ
ル検出装置、特に前記容器内の掃除をし易い検出装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transmission type ultrasonic level detection device used for detecting the remaining amount in a powder raw material container such as coffee in a beverage vending machine. The present invention relates to a detection device that makes it easy to clean the inside of a container.
上記した飲料自動販売機における粉粒体Ｗ、料容器中の
残量検出を行うに当っては、検出結果が粉粒体の見掛は
比重や粉粒体側々の形状等の影響を受は難いという理由
で、従来第４図に示したようなレベル検出装置が採用さ
れ℃いる。When detecting the remaining amount of powder W in the beverage vending machine described above, the detection result is not affected by the apparent appearance of the powder or the shape of the sides of the powder or granule. Because of this difficulty, a level detection device as shown in FIG. 4 has been conventionally employed.
第４図において、１はコーヒー等の粉粒体原料２な収容
する容器、３は円柱状送波器本体部４と該本体部の一端
に固定した円板状７ランジ部５とからなる超音波送波器
、６は円柱状受波器本体部７と該本体部の一端に固定し
た円板状７ランジ部８とからなる超音波受波器で、送波
器３及び受波器６は１本体部４．７が容器ｉ内に突出す
るように該本体部４．７が容器！の壁体９に設けた貫通
孔ｉｏａ、ｔａｂに貫設されて、７ランジ部５゜８で壁
体９に固定されている。この場合、送波器３及び受波器
６は、７ランジ部５．８が取り付けられていない本体部
４．７の各端面４ａｅ７ａが対向するように配置され、
端面４ａから超音波（Ｉを出射し℃この超音波１１を端
面７ａで受波するように構成され℃いる。１２は受波器
６の出力信号６ａについて所定の信号処理を行う受傷回
路。In FIG. 4, 1 is a container for storing powdered raw materials 2 such as coffee, and 3 is a superstructure consisting of a cylindrical transmitter main body 4 and a disc-shaped 7 flange 5 fixed to one end of the main body. The sonic wave transmitter 6 is an ultrasonic wave receiver consisting of a cylindrical receiver main body 7 and a disc-shaped 7 flange 8 fixed to one end of the main body. The main body 4.7 is a container so that the main body 4.7 protrudes into the container i! It is inserted through the through holes ioa and tab provided in the wall body 9, and is fixed to the wall body 9 at seven flange portions 5°8. In this case, the transmitter 3 and the receiver 6 are arranged such that the end surfaces 4ae7a of the main body 4.7 to which the 7 langes 5.8 are not attached face each other,
It is configured to emit ultrasonic waves (I) from the end face 4a and receive the ultrasonic waves 11 at the end face 7a. Reference numeral 12 denotes a damage circuit that performs predetermined signal processing on the output signal 6a of the receiver 6.
１３は送波器３と受波器６と受信回路１２とからなる超
音波レベル検出装置である。レベル検出装置１３では、
粉粒体２が超音波１１を遮る状態にあるか否かに応じて
受信回路１２が動作するようにｗ、成されているので、
該受信回路の動作によつ℃容器ｉ内の粉粒体２０レベル
が所定値に到達したかどうかを検出することができる。Reference numeral 13 denotes an ultrasonic level detection device comprising a transmitter 3, a receiver 6, and a receiving circuit 12. In the level detection device 13,
Since the receiving circuit 12 is configured to operate depending on whether or not the granular material 2 is in a state of blocking the ultrasonic waves 11,
By operating the receiving circuit, it is possible to detect whether the level of the powder 20 in the °C container i has reached a predetermined value.
換言すれば。In other words.
このレベル検出装置１３によつ″Ｃ１容器１における粉
粒体２の残量が所定値になったかどうかを知ることがで
きる。This level detection device 13 allows it to be known whether the remaining amount of powder or granular material 2 in the C1 container 1 has reached a predetermined value.
レベル検出袋ｆｆ１３は上述のように構成されているの
で、粉粒体２０レベルを検出した結果が該粉粒体の見掛
けの比重や該紛粒体個々の形状等の影響を受は難いとい
う利点があるが、一方送波器３及び受波器６の各本体部
４．７が容器１内に突出し℃いるために、粉粒体２が図
示の１４のように本体部４．７の各側面上部に付着した
り１本体ｆｆ１１４．７と容器壁体９との間の貫通孔１
０ａ、１０ｂの部分に侵入したりし易く、この結果、上
述のようにし℃貫通孔ｔｏａ、ｔｏｂ近傍に残留した粉
粒体１４が固化する現象が発生することもあつ℃、レベ
ル検出装置１３には容器ｉ内を不衛生にならないよう和
するための掃除が煩雑であるという問題点がある。Since the level detection bag ff13 is configured as described above, the advantage is that the result of detecting the 20 levels of powder and granules is not easily influenced by the apparent specific gravity of the powder or the shape of each powder or granule. On the other hand, since the main bodies 4.7 of the transmitter 3 and the receiver 6 protrude into the container 1, the powder and granular materials 2 are exposed to each body part 4.7 as shown at 14 in the figure. The through hole 1 between the main body ff114.7 and the container wall 9 may be attached to the upper side surface.
0a and 10b, and as a result, as described above, the powder 14 remaining in the vicinity of the °C through-holes toa and tob may solidify. However, there is a problem in that it is complicated to clean the inside of the container i to prevent it from becoming unsanitary.
本発明の目的は、粉粒体２が送波器３や受波器６に付着
したり容器１の凹部に侵入したりする現象が起こらない
ようにして、容器１内の掃除をやり易くするようにする
ことにある。An object of the present invention is to prevent the phenomenon of powder and granular material 2 from adhering to the transmitter 3 and receiver 6 or from entering the recesses of the container 1, thereby making it easier to clean the inside of the container 1. The purpose is to do so.
上記問題点を解決するために１本発明によれば。 According to one aspect of the present invention, the above problems are solved.
容器内の粉粒体のレベルを検出する超音波透過形のレベ
ル検出袋［において、前記レベル検出装置の超音波送波
器及び超音波受波器をＳ成する各超音波撮動子をいずれ
も前記容器の外面に当接固定し、かつ前記超音波振動子
が固定された部分の前記容器の壁体の厚さを前記超音波
送波器から前記壁体内に出射される超音波の波長の四分
の一の整数倍に設定し℃超音波レベル検出装置を構成す
るものとする。In an ultrasonic transmission type level detection bag for detecting the level of powder or granular material in a container, each ultrasonic sensor constituting an ultrasonic transmitter and an ultrasonic receiver of the level detection device is is fixed in contact with the outer surface of the container, and the thickness of the wall of the container at the portion where the ultrasonic transducer is fixed is determined by the wavelength of the ultrasonic wave emitted from the ultrasonic transmitter into the wall. The ultrasonic level detection device shall be configured by setting the temperature to an integral multiple of one-fourth of ℃.
上記のように構成すると、超音波送波器及び超音波受波
器のいずれも容器内に突出しないので。With the above configuration, neither the ultrasonic transmitter nor the ultrasonic receiver protrudes into the container.
粉粒体が超音波送波器に付着したり超音波受波器に付着
したりすることがなくなって容器内の掃除がやり易くな
る。Powder particles do not adhere to the ultrasonic transmitter or the ultrasonic receiver, making it easier to clean the inside of the container.
第１図は本発明の第１実施例の構成を説明するために要
部を縦断し℃示した図である。第１図におい℃、１５は
粉粒体２を収容する有底四角筒状の樹脂材斜製容器で、
この容器１５の底部は円錐状に形成され℃いる。１６は
その底１１６ａが容器１５を形成する壁体１５１１と一
体的に形成され。FIG. 1 is a longitudinal cross-sectional view showing the main part in order to explain the structure of the first embodiment of the present invention. In FIG. 1, reference numeral 15 indicates a bottomed rectangular cylindrical container made of resin material, which accommodates the powder and granular material 2.
The bottom of this container 15 is formed into a conical shape. The bottom 116a of the container 16 is formed integrally with the wall 1511 forming the container 15.
底＠ １６１の内面に円板状圧電振動子１７が接着固定
された有底円筒状取付座、１８は、撮動子１７の両面の
それぞれに設けた各電極にリード線１９ａ＠１９ｂ？：
介して接続されたビン状端子２０ａ、２０ｂがそれぞれ
貫設され、かつ端子２０８．２０ｔ）が貫設された状態
で取付座１６の開口端を塞ぐように設けた蓋、２１は取
付座１６の内部をＭ２Ｓを介し℃封止するように取付座
１６の開口端に充填した樹脂で、２２は取付座１６と撮
動子１７と！！１８とリード線１９３．１９ｆｉと端子
２０ａ。A bottomed cylindrical mounting seat 18 has a disk-shaped piezoelectric vibrator 17 adhesively fixed to the inner surface of the bottom @ 161, and lead wires 19a@19b? :
A lid 21 is provided to cover the open end of the mounting seat 16 with the bottle-shaped terminals 20a and 20b connected through the mounting seat 16 and the terminals 208 and 20t) inserted therethrough. The open end of the mounting seat 16 is filled with resin so as to seal the inside through M2S at ℃, and 22 is the mounting seat 16 and the camera element 17! ! 18 and lead wire 193.19fi and terminal 20a.
２０ｂと樹脂２１とからなる超音波送波器である。20b and resin 21.
この場合、取付座１６の底部ｌｅａの厚さＤは。In this case, the thickness D of the bottom lea of the mounting seat 16 is:
振動子１７が該底部１６ａ内に出射する超音波の波長な
λとした時、λ／４ｉＣ等しくなるように設定されてお
り、また底部１６ａの外面は壁１５ａの内面と面一に形
成されている。２３は撮動子１７から上記した超音波を
出射させるようにした送波器駆動回路である。When the wavelength of the ultrasonic wave emitted by the transducer 17 into the bottom 16a is λ, it is set to be equal to λ/4iC, and the outer surface of the bottom 16a is formed flush with the inner surface of the wall 15a. There is. 23 is a transmitter drive circuit configured to emit the above-mentioned ultrasonic waves from the camera element 17.
２４は、送波器２２が底部１６ａｆＩ：介し℃容器１５
内に出射する超音波２５を受波するように構成した超音
波受波器で、この受波器２４は送波器２２とｔマぼ同様
に構成されている。すなわち、２６゜２７は受波器２４
を構成するそれぞれ取付座、円板状の圧電撮動子で、２
８ａ、２８ｂはいずれも受波器２４を構成するピン状端
子である。取付座２６もその底部２６ａが容器１５の壁
体１５ａに 。24, the transmitter 22 is connected to the bottom 16afI: through the °C container 15
The ultrasonic wave receiver 24 is configured to receive the ultrasonic wave 25 emitted within the ultrasonic wave receiver 24, and the wave receiver 24 is configured in the same manner as the wave transmitter 22. In other words, 26°27 is the receiver 24
A mounting seat and a disc-shaped piezoelectric sensor constitute the 2
Both 8a and 28b are pin-shaped terminals that constitute the wave receiver 24. The bottom 26a of the mounting seat 26 is also attached to the wall 15a of the container 15.
対向する壁体１５ｂと一体的に形成され、かつ底部２６
ａの厚さもλ／４となつ℃いる。また底部２６ａの外面
は壁体１５ｂの内面と面一に形成され℃いる。２９は送
波器２２と送波器駆動回路２３と受波器２４とこの受波
器の出力信号２４ａを受信する受信回路１２とからなる
超音波レベル検出装置である。It is formed integrally with the opposing wall body 15b, and the bottom part 26
The thickness of a is also λ/4. Further, the outer surface of the bottom portion 26a is formed flush with the inner surface of the wall body 15b. Reference numeral 29 denotes an ultrasonic level detection device comprising a wave transmitter 22, a wave transmitter drive circuit 23, a wave receiver 24, and a receiving circuit 12 that receives the output signal 24a of this wave receiver.
レベル検出装置２９は上述のように構成され℃いるので
、駆動回路２３で振動子１７を励振すると、ここで超音
波が発生してこの超音波が取付座の底部１６ａを伝播し
て超音波２５とし℃容器１５内に出射する。そうし℃、
容器１５内忙超音波２５の進行を妨げるように粉粒体２
が堆積し℃いなければ、超音波２５は取付座底部２６ａ
を介して振動子２７を励振する。粉粒体２の堆積によつ
℃超音波２５の進行が遮られると振動子２７の励振は起
らない。したかっ″Ｃ，受信回路１２の動作釦よつ℃、
粉粒体２の容器１５内のレベルが所定（１ｉ’ｔｌｃ到
達したかどうかを知ることができる。Since the level detection device 29 is configured as described above, when the vibrator 17 is excited by the drive circuit 23, an ultrasonic wave is generated, and this ultrasonic wave propagates through the bottom portion 16a of the mounting seat, causing an ultrasonic wave 25. The temperature is then emitted into the container 15. So ℃,
The granular material 2 is placed inside the container 15 so as to impede the progress of the ultrasonic waves 25.
If there is no accumulation of
The vibrator 27 is excited through the oscillator 27. If the progress of the °C ultrasonic wave 25 is blocked by the accumulation of the powder 2, the vibrator 27 will not be excited. I want to press the operation button of the receiving circuit 12.
It can be known whether the level of the powder or granular material 2 in the container 15 has reached a predetermined level (1i'tlc).
レベル検出装置２９はこのように動作するので。Since the level detection device 29 operates in this way.
容器１５内の粉粒体２の残量が所定値以下和なりたこと
を検出することができるが、この場合容器１５の内面に
は突出したものが何もないので、粉粒体２０レベルの減
少の際に第３図に示したような付滑粉粒体１４が発生す
るという現象は起こらない。故に、このようなレベル検
出装置２９を採用すると、容器１５内の掃除が極め℃容
易になる。It is possible to detect that the remaining amount of the powder or granular material 2 in the container 15 has reached a predetermined value or less, but in this case, since there is nothing protruding from the inner surface of the container 15, the amount of the powder or granular material 20 level can be detected. The phenomenon of generation of lubricating powder granules 14 as shown in FIG. 3 during reduction does not occur. Therefore, if such a level detection device 29 is employed, cleaning inside the container 15 becomes extremely easy.
なお、検出装置２９においては、取付座底部Ｉ６ａ＃
２６ａの各厚さをいずれもλ／４にしたので、底ｍ１６
ａ外面の振動振幅が最大となつ″Ｃ１該底部から超音
波が容器１５内に効率よく出射される。In addition, in the detection device 29, the mounting seat bottom I6a#
Since each thickness of 26a is set to λ/4, the bottom m16
Ultrasonic waves are efficiently emitted into the container 15 from the bottom portion of the container 15 where the vibration amplitude of the outer surface is maximum.
また、底８２６ａにおい℃も、該底部内面の振動振幅が
最大となって、効率よ（振動子２７が励振されることに
なる。レベル検出装置２９は上記のよう忙構成されてい
るので、第１図におい℃は。Furthermore, when the temperature at which the bottom 826a smells increases, the vibration amplitude of the inner surface of the bottom becomes maximum, and the vibrator 27 is excited efficiently.Since the level detection device 29 is configured as described above, The temperature in Figure 1 is ℃.
検出装置２９の超音波送波器２２及び超音波受波器２４
を構成する各超音波摂動子とし℃の圧電振動子１７．２
７をいずれも容器１５の外面に当接固定し、かつ振動子
１７．２７が固定された部分の容器壁体１５ａ、１５ｂ
の各浮さを、送波器２２から壁体１５ａ内に出射されろ
超音波の波長の四分の−に設定し℃いるということがで
きる。Ultrasonic transmitter 22 and ultrasonic receiver 24 of detection device 29
Each ultrasonic perturber constitutes a piezoelectric vibrator at 17.2 °C.
7 are fixed in contact with the outer surface of the container 15, and the container walls 15a and 15b are the portions to which the vibrators 17 and 27 are fixed.
It can be said that each float is set to -4 of the wavelength of the ultrasonic wave emitted from the transmitter 22 into the wall 15a.
上述においＣは、超音波２５が粉粒体２で遮られると振
動子２７の励振が起こらないとしたが。In the above description, C assumes that when the ultrasonic wave 25 is blocked by the powder 2, the vibrator 27 is not excited.
実際忙は振動子１７から出射された超音波が底部１６ａ
、壁体１５ａ、１５ｂ等の容器１５を構成する各壁体、
底部２６ａを順次介して振動子２７に達するので、この
場合、受波器２４が出力する信号２４ａ中和雑音が現れ
る。しかしながら、レベル検出装置２９においては、超
音波２５が粉粒体２で遮られない場合、上述したように
、送波器２２から効率よく超音波２５が出射されかつこ
の超音波２５により℃効率よく振動子２７が励振される
ようになつ℃いＣ，この場合の出力信号２４ａのレベル
が極め℃高くなつ℃いるので、前記のような雑音が生じ
工もレベル検出装置２９における検出結果がこの雑音の
影響を受けることはない。In reality, the ultrasonic waves emitted from the transducer 17 are transmitted to the bottom 16a.
, each wall forming the container 15 such as walls 15a and 15b,
Since the signal reaches the vibrator 27 via the bottom portion 26a in sequence, in this case, neutralization noise appears in the signal 24a output by the receiver 24. However, in the level detection device 29, when the ultrasonic waves 25 are not blocked by the powder or granular material 2, the ultrasonic waves 25 are efficiently emitted from the transmitter 22 as described above, and the ultrasonic waves 25 efficiently When the vibrator 27 starts to be excited, the level of the output signal 24a becomes extremely high, causing noise as described above. will not be affected by.
第２図は本発明の第２実施例の構成説明図で。FIG. 2 is an explanatory diagram of the configuration of a second embodiment of the present invention.
第２図囚は第１図に対応する縦断側面図、第２図■は第
２図〜における要部のＰ矢視図である。また、第３図は
第２図における要部の説明図で、第３図んは第２図■に
おける要部のＱ矢視図、第３図ａは同図へにおける要部
のＲ矢視拡大縦断面図である。第２図及び第３図におい
℃は、説明の便宜上、８１図に示した送波器駆動回路２
３．受信回路１２のそれぞれに対応した送波器駆動回路
及び受信回路がいずれも省略され℃いろ。FIG. 2 is a vertical side view corresponding to FIG. 1, and FIG. In addition, Figure 3 is an explanatory diagram of the main parts in Figure 2, Figure 3(a) is a view of the main parts in Figure 2 (■) in the direction of the Q arrow, and Figure 3a is a view of the main parts in the same figure as seen in the R arrow. It is an enlarged longitudinal cross-sectional view. 2 and 3, for convenience of explanation, the transmitter drive circuit 2 shown in FIG.
3. Both the transmitter driving circuit and the receiving circuit corresponding to each of the receiving circuits 12 are omitted.
第２図及び第３図におい′ｃ、３０は容器１５の平面上
内面を有する壁体Ｌ５ａと一体的に形成された高さＤを
有する円柱状の取付座で、この取付座３００両端面は共
に該を併産の軸心に垂直な平面状に形成され、Ｗ８付座
３０の壁体Ｌ５ａ側端面３０ｂは壁体１５ａの内面と面
一になつ℃いる。In FIGS. 2 and 3, reference numeral 'c, 30 denotes a cylindrical mounting seat having a height D that is integrally formed with the wall L5a having a planar inner surface of the container 15, and both end surfaces of this mounting seat 300 are Both are formed into a planar shape perpendicular to the axis of the joint, and the end surface 30b of the W8 seat 30 on the side of the wall L5a is flush with the inner surface of the wall 15a.
３１はその底部３１Ｈの内面に圧電振動子１７が接層さ
れかつ開口端につげ３１ｂが設けられた有底円筒状容器
で、この容器３１の開口端は、上述した超音波送波器２
２におけると同様の構成の。Reference numeral 31 denotes a bottomed cylindrical container having a piezoelectric vibrator 17 layered on the inner surface of the bottom portion 31H and a boxwood 31b provided at the open end.
The configuration is similar to that in 2.
端子２０ａ、２０ｂが貫設された蓋１８と、樹脂２１と
で塞がれている。そうして、容器３１は。It is covered with a lid 18 through which the terminals 20a and 20b are inserted, and a resin 21. Then, the container 31.
つげａｔｂが覗り付けられた側が四角部上アーム３２・
の一端３２ａ側にｙ示したように挿入され℃。The side where the boxwood atb is peeked out is the square upper arm 32.
It is inserted into one end 32a side as shown.
該アーム３２につば３１ｂの部分で接着により固定され
ており、アーム３２の他端３２ｂは蝶番機構３３を構成
する軸棒３４に蝶着され℃いる。３５は両端にそれぞれ
軸棒３４．３６が固定された横梁状保持部材、３７は、
軸棒３４に図示の如（装置された状態で１両端で容器１
５の側壁を押圧し中間のコの字状部分でアーム３２を押
圧するよう和した弾性線材料製の押さえばね、３８は容
器３１と振動子１７と蓋１８と端子２０ａ、２０ｂと樹
脂２１とアーム３２とからなる超音波送波器である。そ
うして、この場合、アーム３２が押さえばね３７で押さ
れることによって、送波器３Ｂにおける容器底部３１ａ
の外面を、薄い円板状ゴムパツキン３９を介して、＊何
座３０の端面３０ｂに対向する平面状端面３０ａＫ押圧
するように、保持部材３５が図示し℃いない支持部材に
よつ℃支持されている。It is fixed to the arm 32 by adhesive at the brim 31b, and the other end 32b of the arm 32 is hinged to a shaft 34 constituting a hinge mechanism 33. 35 is a horizontal beam-like holding member with shaft rods 34 and 36 fixed to both ends, and 37 is
As shown in the figure, the shaft rod 34 holds the container 1 at both ends.
A presser spring 38 is made of an elastic wire material and is designed to press the side wall of 5 and press the arm 32 with the U-shaped part in the middle. This is an ultrasonic transmitter consisting of an arm 32. In this case, the arm 32 is pressed by the presser spring 37, so that the container bottom 31a in the wave transmitter 3B is
The holding member 35 is supported by a support member (not shown) so as to press the outer surface of the flat end face 30aK opposite to the end face 30b of the seat 30 through the thin disc-shaped rubber gasket 39. There is.
４０は容器１５の壁体１５ｍに対向する壁体１５ｂに設
けた。取付座３０と同じ構成の取付座、４１は、押さえ
ばね３７と同様な構成の押さえばね４２和よって、取付
座４０の容器１５外に突出した端面４０ｍに薄い円板状
ゴムパツキン４３を介し℃押圧されるようにした超音波
受波器で、超音波受波器４１は超音波送波器３８と同様
に構成され。40 was provided on the wall 15b opposite to the wall 15m of the container 15. A mounting seat 41 having the same configuration as the mounting seat 30 is pressed by a pressure spring 42 having the same structure as the pressure spring 37 through a thin disc-shaped rubber gasket 43 on the end surface 40m of the mounting seat 40 that protrudes outside the container 15. The ultrasonic receiver 41 is configured similarly to the ultrasonic transmitter 38.
受波器４１を構成する。前述のアーム３２に対応したア
ーム４４の、アーム３２の端部３２ｂに対応する端部４
４ｂが、前記端部３２ｂと同様に軸棒３６に蝶着され℃
いる。そうしＣ１この場合。A receiver 41 is configured. An end 4 of an arm 44 corresponding to the arm 32 described above, corresponding to the end 32b of the arm 32
4b is hinged to the shaft rod 36 in the same way as the end portion 32b.
There is. So C1 in this case.
軸棒３６に装着した前述の押さえばね４２によつ℃アー
ム４４が押されることによつ℃、アーム４４の端部４４
ａ側に設けた容器４５の底部４５ｍの外面がパツキン４
３に押圧されるようになっている。図示していないが、
容器４５内には、容器３１におけると同様にして圧電振
動子が設置されている。取付座４０もその高さがＤに設
定され℃いる。The end portion 44 of the arm 44 is pressed by the aforementioned presser spring 42 attached to the shaft rod 36 to
The outer surface of the bottom 45m of the container 45 provided on the a side is the packing 4.
It is now pressed to 3. Although not shown,
A piezoelectric vibrator is installed in the container 45 in the same manner as in the container 31. The height of the mounting seat 40 is also set to D.degree.
取付座４０は取付座３０に対向するように配置され℃い
る。The mounting seat 40 is arranged to face the mounting seat 30.
４６は容器１５を除く図示の各部からなる超音波レベル
検出装置である。Reference numeral 46 denotes an ultrasonic level detection device consisting of the illustrated parts except for the container 15.
レベル検出装置４６は上述のように構成され℃いるので
、前述した検出装置２９の場合と同様に粉粒体２０レベ
ル検出が行えることが明らかであるが、検出装置４６に
は、検出装置２９に比べ′ｃ１送波器３８及び受波器４
１の容器１５に対する漕脱が容易であるという利点があ
ることもまた明らかである。レベル検出装置４６に設け
たゴムパツキン３９．４３はそれぞれ容器底部３１ａと
パツキン３９と間、容器底部４５ａとパツキン４３との
間の各接触を確実ならしめて超音波伝播が効率よく行わ
れるようにするためで、この場合、パツキン３９．４３
の各厚さが非常に薄く形成され℃いるので、これらのパ
ツキンのために超音波の伝播が阻害されることはない。Since the level detection device 46 is configured as described above, it is clear that it can detect the level of the powder or granular material 20 in the same way as the detection device 29 described above. Compare 'c1 transmitter 38 and receiver 4
It is also clear that there is an advantage that one container 15 can be easily removed. The rubber gaskets 39 and 43 provided on the level detection device 46 are used to ensure contact between the container bottom 31a and the gasket 39 and between the container bottom 45a and the gasket 43, respectively, so that ultrasonic waves propagate efficiently. In this case, Patsukin 39.43
Since the thickness of each layer is very thin, the propagation of ultrasonic waves is not obstructed by these gaskets.
また、検出装置４６におい℃は、前述した容器底部３１
ａｅ ４５ａも共に非常に薄く形成されてい℃かつ取付
座３０゜４０は共に高さＤがλ／４に等しく形成されて
いるので、検出装置２９におけろと同様に、送波器３８
から超音波２５が効率よ（パツキン３９及び取付座３０
を介して容器１５内に出射され、受波器４１は超音波２
５を取付座４０．パツキン゛４３を介して効率よく受波
すること釦なる。λは超音波２５の取付座３０．４０に
おける波長である。In addition, the detection device 46 detects the temperature at the container bottom 31 as described above.
Both ae 45a are formed very thin and the mounting seats 40 are both formed with a height D equal to λ/4, so the transmitter 38
The ultrasonic wave 25 is more efficient (packet 39 and mounting seat 30)
The ultrasonic wave 2 is emitted into the container 15 through the receiver 41.
5 is the mounting seat 40. This button allows efficient reception of waves through the packing 43. λ is the wavelength of the ultrasonic wave 25 at the mounting seat 30.40.
検出装置４６におい℃も容器１５内の掃除を容易に行い
うろことは、説明するまでもなく明らかである。It is obvious that the inside of the container 15 can be easily cleaned even if the temperature of the detection device 46 is low.
上述の各実施例におい℃は取付座１６．２６゜３０．４
０の各寸法りがλ／４に設定され℃いるものとしたが、
本発明においては、Ｄはλ／４の整数倍の長さに設定さ
れ℃差し支えないものである。In each of the above examples, the temperature at the mounting seat is 16.26° and 30.4°.
It is assumed that each dimension of 0 is set to λ/4 and is ℃,
In the present invention, D is set to a length that is an integral multiple of λ/4, and can be set to a length that is an integer multiple of λ/4, and can be set to a length that is an integral number of degrees Celsius.
上述したように１本発明においては、容器内の粉粒体の
レベルを検出する超音波透過形のレベル検出装置におい
℃、前記レベル検出装置の超音波送波器及び超音波受波
器を構成する各超音波振動子をいずれも前記容器の外面
に当接固定し、かつ超音波振動子が固定された部分の前
記容器の壁体の厚さを超音波送波器から前記壁体内に出
射され全超音波の波長の四分の一整数倍に設定し℃超音
波レベル検出装置を構成した。As described above, in one aspect of the present invention, in an ultrasonic transmission type level detection device for detecting the level of powder or granular material in a container, the ultrasonic wave transmitter and the ultrasonic wave receiver of the level detection device are configured. Each ultrasonic transducer is fixed in contact with the outer surface of the container, and the thickness of the wall of the container at the portion where the ultrasonic transducer is fixed is emitted from an ultrasonic transmitter into the wall. The ultrasonic level detection device was constructed by setting the temperature to an integer multiple of a quarter of the total ultrasonic wavelength.
このため、上記のように構成すると、超音波送波器及び
超音波受波器のいずれも容器内に突出しな〜鳴、粉粒体
が超音波送波器や超音波受波器に付着することがなくな
って、この結果１本発明には容器内の掃除がやり易くな
る効果がある。Therefore, with the above configuration, neither the ultrasonic transmitter nor the ultrasonic receiver will protrude into the container, and powder particles will adhere to the ultrasonic transmitter and the ultrasonic receiver. As a result, the present invention has the effect of making it easier to clean the inside of the container.
第１図は本発明の第１実施例の構成説明図、第２図は本
発明の第２実施例の構成説明図で、第２図＾は縦断＠面
図、第２図０は第２図囚における要部のＰ矢視図である
。第３図は第２図における要部の説明図で、第３図囚は
第２図囚における要部のＱ矢視図、第３図８は第３図Ｎ
における要部のＲ矢視拡大縦断面図である。第４図は従
来の超音波レベル検出装置の構成図である。
１．１５・・・・・・容器、２・・・・・・粉粒体原料
、３．２２．３８・・・・・・超音波送波器、 ６．２
４．４１・・・・・・超音波受波器。
９、 Ｌ ５ ａ、 ｌ ５ ｂ−−−−−−壁体、
１１．２５・・−・−超音波、１３゜２９、４６・・
・・・・超音波レベル検出装置、１７．２７・・・・・
・篤 １ 閉
（Ｂ）
箋 ２ 図
（、’１）
（８〕
箋 ３１！ｌFIG. 1 is an explanatory diagram of the configuration of the first embodiment of the present invention, FIG. 2 is an explanatory diagram of the configuration of the second embodiment of the invention, FIG. It is a P arrow view of the main part in a figure. Figure 3 is an explanatory diagram of the main parts in Figure 2, Figure 3 is a Q arrow view of the main parts in Figure 2, Figure 38 is Figure 3 N
FIG. 2 is an enlarged vertical cross-sectional view of the main part in the direction of arrow R; FIG. 4 is a block diagram of a conventional ultrasonic level detection device. 1.15... Container, 2... Powder raw material, 3.22.38... Ultrasonic wave transmitter, 6.2
4.41... Ultrasonic receiver. 9, L 5 a, l 5 b ------- wall,
11.25...-Ultrasound, 13°29, 46...
...Ultrasonic level detection device, 17.27...
・Atsushi 1 Closed (B) Note 2 Diagram (,'1) (8) Note 31!l
Claims (1)
ベル検出装置において、前記レベル検出装置の超音波送
波器及び超音波受波器を構成する各超音波振動子をいず
れも前記容器の外面に当接固定し、かつ前記超音波振動
子が固定された部分の前記容器の壁体の厚さを、前記超
音波送波器から前記壁体内に出射される超音波の波長の
四分の一の整数倍に設定したことを特徴とする超音波レ
ベル検出装置。In an ultrasonic transmission type level detection device for detecting the level of powder or granular material in a container, each ultrasonic vibrator constituting an ultrasonic transmitter and an ultrasonic receiver of the level detection device is connected to the container. The thickness of the wall of the container at the portion where the ultrasonic transducer is fixed in contact with the outer surface of the container is determined to be equal to the wavelength of the ultrasonic wave emitted from the ultrasonic transmitter into the wall. An ultrasonic level detection device characterized in that the level is set to an integral multiple of 1/1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62301288A JPH01142416A (en) | 1987-11-28 | 1987-11-28 | Ultrasonic wave level detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62301288A JPH01142416A (en) | 1987-11-28 | 1987-11-28 | Ultrasonic wave level detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01142416A true JPH01142416A (en) | 1989-06-05 |
Family
ID=17895029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62301288A Pending JPH01142416A (en) | 1987-11-28 | 1987-11-28 | Ultrasonic wave level detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01142416A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007223652A (en) * | 2006-02-24 | 2007-09-06 | Chugoku Electric Power Co Inc:The | Device for detecting discharging of powder and granule, and powder and granule storing apparatus |
| WO2020246162A1 (en) * | 2019-06-03 | 2020-12-10 | 株式会社ｉｎｄｕｓｔｒｉａ | Fine material amount detection device, clamp-type holder, centrifugal separation device, and fine material removal system |
| JP2022079793A (en) * | 2020-11-10 | 2022-05-27 | 株式会社ワイエスアンドアソシエイツ | Liquid level detector |
| TWI779280B (en) * | 2019-06-03 | 2022-10-01 | 日商英達斯特股份有限公司 | System for removing fine material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57182676A (en) * | 1981-04-30 | 1982-11-10 | Agfa Gevaert Ag | Method of detecting material to be detected and its device |
| JPS625210B2 (en) * | 1982-02-05 | 1987-02-03 | Daido Steel Co Ltd |
-
1987
- 1987-11-28 JP JP62301288A patent/JPH01142416A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57182676A (en) * | 1981-04-30 | 1982-11-10 | Agfa Gevaert Ag | Method of detecting material to be detected and its device |
| JPS625210B2 (en) * | 1982-02-05 | 1987-02-03 | Daido Steel Co Ltd |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007223652A (en) * | 2006-02-24 | 2007-09-06 | Chugoku Electric Power Co Inc:The | Device for detecting discharging of powder and granule, and powder and granule storing apparatus |
| WO2020246162A1 (en) * | 2019-06-03 | 2020-12-10 | 株式会社ｉｎｄｕｓｔｒｉａ | Fine material amount detection device, clamp-type holder, centrifugal separation device, and fine material removal system |
| TWI779280B (en) * | 2019-06-03 | 2022-10-01 | 日商英達斯特股份有限公司 | System for removing fine material |
| JP2022079793A (en) * | 2020-11-10 | 2022-05-27 | 株式会社ワイエスアンドアソシエイツ | Liquid level detector |
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