{"id":44372,"date":"2023-04-25T14:57:21","date_gmt":"2023-04-25T19:57:21","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/what-is-an-ultrasonic-generator\/"},"modified":"2025-01-21T07:28:39","modified_gmt":"2025-01-21T12:28:39","slug":"what-is-an-ultrasonic-generator","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/vi\/what-is-an-ultrasonic-generator\/","title":{"rendered":"Kh\u00e1m ph\u00e1 M\u00e1y ph\u00e1t si\u00eau \u00e2m: Nguy\u00ean l\u00fd v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"<p>Si\u00eau \u00e2m l\u00e0 m\u1ed9t lo\u1ea1i s\u00f3ng \u00e2m thanh c\u00f3 t\u1ea7n s\u1ed1 cao h\u01a1n m\u1ee9c nghe \u0111\u01b0\u1ee3c c\u1ee7a tai ng\u01b0\u1eddi, th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u t\u1eeb 20kHz tr\u1edf l\u00ean.  M\u00e1y ph\u00e1t si\u00eau \u00e2m, hay c\u00f2n g\u1ecdi l\u00e0 b\u1ed9 t\u1ea1o si\u00eau \u00e2m, l\u00e0 thi\u1ebft b\u1ecb ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o ra nh\u1eefng s\u00f3ng \u00e2m thanh n\u00e0y. Ch\u00fang c\u00f3 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c, t\u1eeb y t\u1ebf v\u00e0 c\u00f4ng nghi\u1ec7p cho \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y ph\u00e1t si\u00eau \u00e2m<\/h3>\n<p>M\u00e1y ph\u00e1t si\u00eau \u00e2m ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean hi\u1ec7u \u1ee9ng \u00e1p \u0111i\u1ec7n.  Hi\u1ec7u \u1ee9ng n\u00e0y cho ph\u00e9p m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u nh\u1ea5t \u0111\u1ecbnh, g\u1ecdi l\u00e0 v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n (v\u00ed d\u1ee5 nh\u01b0 th\u1ea1ch anh, g\u1ed1m \u00e1p \u0111i\u1ec7n), bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc d\u01b0\u1edbi d\u1ea1ng dao \u0111\u1ed9ng v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. Khi m\u1ed9t \u0111i\u1ec7n \u00e1p xoay chi\u1ec1u \u0111\u01b0\u1ee3c \u00e1p v\u00e0o v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, n\u00f3 s\u1ebd co gi\u00e3n v\u00e0 t\u1ea1o ra s\u00f3ng \u00e2m c\u00f3 t\u1ea7n s\u1ed1 t\u01b0\u01a1ng \u1ee9ng v\u1edbi t\u1ea7n s\u1ed1 c\u1ee7a \u0111i\u1ec7n \u00e1p.  T\u1ea7n s\u1ed1 n\u00e0y n\u1eb1m trong d\u1ea3i si\u00eau \u00e2m, do \u0111\u00f3 t\u1ea1o ra s\u00f3ng si\u00eau \u00e2m.<\/p>\n<h3>C\u00e1c lo\u1ea1i m\u00e1y ph\u00e1t si\u00eau \u00e2m<\/h3>\n<p>C\u00f3 nhi\u1ec1u lo\u1ea1i m\u00e1y ph\u00e1t si\u00eau \u00e2m kh\u00e1c nhau, \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i d\u1ef1a tr\u00ean t\u1ea7n s\u1ed1, c\u00f4ng su\u1ea5t, v\u00e0 \u1ee9ng d\u1ee5ng. M\u1ed9t s\u1ed1 lo\u1ea1i ph\u1ed5 bi\u1ebfn bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>M\u00e1y ph\u00e1t si\u00eau \u00e2m c\u00f4ng su\u1ea5t th\u1ea5p:<\/strong> Th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 l\u00e0m s\u1ea1ch, ki\u1ec3m tra v\u1eadt li\u1ec7u kh\u00f4ng ph\u00e1 h\u1ee7y, v\u00e0 ch\u1ea9n \u0111o\u00e1n y t\u1ebf.<\/li>\n<li><strong>M\u00e1y ph\u00e1t si\u00eau \u00e2m c\u00f4ng su\u1ea5t cao:<\/strong> \u0110\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p nh\u01b0 h\u00e0n nh\u1ef1a, gia c\u00f4ng si\u00eau \u00e2m, v\u00e0 x\u1eed l\u00fd ch\u1ea5t l\u1ecfng.<\/li>\n<\/ul>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Lo\u1ea1i m\u00e1y ph\u00e1t<\/th>\n<th>T\u1ea7n s\u1ed1 (kHz)<\/th>\n<th>C\u00f4ng su\u1ea5t (W)<\/th>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>C\u00f4ng su\u1ea5t th\u1ea5p<\/td>\n<td>20 &#8211; 100<\/td>\n<td>&lt; 100<\/td>\n<td>L\u00e0m s\u1ea1ch, ki\u1ec3m tra<\/td>\n<\/tr>\n<tr>\n<td>C\u00f4ng su\u1ea5t cao<\/td>\n<td>20 &#8211; 40<\/td>\n<td>&gt; 100<\/td>\n<td>H\u00e0n, gia c\u00f4ng, x\u1eed l\u00fd ch\u1ea5t l\u1ecfng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>C\u1ea5u t\u1ea1o c\u1ee7a m\u00e1y ph\u00e1t si\u00eau \u00e2m<\/h3>\n<p>M\u1ed9t m\u00e1y ph\u00e1t si\u00eau \u00e2m \u0111i\u1ec3n h\u00ecnh bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh sau:<\/p>\n<ul>\n<li><strong>B\u1ed9 dao \u0111\u1ed9ng:<\/strong> T\u1ea1o ra t\u00edn hi\u1ec7u \u0111i\u1ec7n xoay chi\u1ec1u c\u00f3 t\u1ea7n s\u1ed1 si\u00eau \u00e2m.<\/li>\n<li><strong>B\u1ed9 khu\u1ebfch \u0111\u1ea1i:<\/strong> Khu\u1ebfch \u0111\u1ea1i t\u00edn hi\u1ec7u \u0111i\u1ec7n \u0111\u1ec3 \u0111\u1ea1t c\u00f4ng su\u1ea5t mong mu\u1ed1n.<\/li>\n<li><strong>\u0110\u1ea7u d\u00f2 (transducer):<\/strong> Ch\u1ee9a v\u1eadt li\u1ec7u \u00e1p \u0111i\u1ec7n, bi\u1ebfn \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n th\u00e0nh n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc d\u01b0\u1edbi d\u1ea1ng s\u00f3ng si\u00eau \u00e2m.<\/li>\n<\/ul>\n<h3>\u1ee8ng d\u1ee5ng c\u1ee7a m\u00e1y ph\u00e1t si\u00eau \u00e2m<\/h3>\n<p>M\u00e1y ph\u00e1t si\u00eau \u00e2m c\u00f3 \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c:<\/p>\n<ul>\n<li><strong>Y t\u1ebf:<\/strong> Ch\u1ea9n \u0111o\u00e1n h\u00ecnh \u1ea3nh, \u0111i\u1ec1u tr\u1ecb ung th\u01b0, v\u1eadt l\u00fd tr\u1ecb li\u1ec7u.<\/li>\n<li><strong>C\u00f4ng nghi\u1ec7p:<\/strong> H\u00e0n nh\u1ef1a, gia c\u00f4ng kim lo\u1ea1i, l\u00e0m s\u1ea1ch b\u1ec1 m\u1eb7t.<\/li>\n<li><strong>\u0110\u1eddi s\u1ed1ng:<\/strong>  M\u00e1y t\u1ea1o \u1ea9m, \u0111u\u1ed5i c\u00f4n tr\u00f9ng.<\/li>\n<\/ul>\n<h3>L\u1ef1a ch\u1ecdn m\u00e1y ph\u00e1t si\u00eau \u00e2m<\/h3>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn m\u00e1y ph\u00e1t si\u00eau \u00e2m ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. C\u1ea7n xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 t\u1ea7n s\u1ed1, c\u00f4ng su\u1ea5t, lo\u1ea1i \u0111\u1ea7u d\u00f2 v\u00e0 k\u00edch th\u01b0\u1edbc.<\/p>\n<p>T\u00f3m l\u1ea1i, m\u00e1y ph\u00e1t si\u00eau \u00e2m l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb quan tr\u1ecdng v\u1edbi nhi\u1ec1u \u1ee9ng d\u1ee5ng \u0111a d\u1ea1ng. Hi\u1ec3u r\u00f5 nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng, c\u00e1c lo\u1ea1i v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a m\u00e1y ph\u00e1t si\u00eau \u00e2m s\u1ebd gi\u00fap l\u1ef1a ch\u1ecdn v\u00e0 s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb hi\u1ec7u qu\u1ea3 h\u01a1n. S\u1ef1 ph\u00e1t tri\u1ec3n c\u00f4ng ngh\u1ec7 li\u00ean t\u1ee5c h\u1ee9a h\u1eb9n s\u1ebd mang \u0111\u1ebfn nh\u1eefng \u1ee9ng d\u1ee5ng m\u1edbi v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n cho m\u00e1y ph\u00e1t si\u00eau \u00e2m trong t\u01b0\u01a1ng lai.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Si\u00eau \u00e2m l\u00e0 m\u1ed9t lo\u1ea1i s\u00f3ng \u00e2m thanh c\u00f3 t\u1ea7n s\u1ed1 cao h\u01a1n m\u1ee9c nghe \u0111\u01b0\u1ee3c c\u1ee7a tai ng\u01b0\u1eddi, th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u t\u1eeb 20kHz tr\u1edf l\u00ean. M\u00e1y ph\u00e1t si\u00eau \u00e2m, hay c\u00f2n g\u1ecdi l\u00e0 b\u1ed9 t\u1ea1o si\u00eau \u00e2m, l\u00e0 thi\u1ebft b\u1ecb ch\u1ecbu tr\u00e1ch nhi\u1ec7m t\u1ea1o ra nh\u1eefng s\u00f3ng \u00e2m thanh n\u00e0y. Ch\u00fang c\u00f3 \u1ee9ng d\u1ee5ng<\/p>\n","protected":false},"author":1,"featured_media":24652,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6406],"tags":[],"class_list":["post-44372","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44372","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/comments?post=44372"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/posts\/44372\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media\/24652"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/media?parent=44372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/categories?post=44372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/vi\/wp-json\/wp\/v2\/tags?post=44372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}