{"id":3788,"date":"2016-04-17T19:56:55","date_gmt":"2016-04-17T19:56:55","guid":{"rendered":"http:\/\/PRINCIP-FUNKCE-HX-BOJLERU"},"modified":"2021-02-17T13:46:32","modified_gmt":"2021-02-17T12:46:32","slug":"princip-funkce-hx-bojleru","status":"publish","type":"post","link":"https:\/\/www.alohapatek.cz\/index.php\/2016\/04\/17\/princip-funkce-hx-bojleru\/","title":{"rendered":"PRINCIP FUNKCE HX BOJLERU:"},"content":{"rendered":"\n

PRINCIP FUNKCE HX BOJLERU:<\/p>\n\n\n\n

Tak a te\u010f je\u0161t\u011b jednou k HX bojleru. Je to takov\u00e1 ta ITALSK\u00c1 klasika. <\/p>\n\n\n\n

HX BOJLER.<\/p>\n\n\n\n

 I kdy\u017e u\u017e  ub\u011bhlo p\u0159es p\u016fl stolet\u00ed, technologie a podstata, na nich\u017e espresso k\u00e1vovary pracuj\u00ed se syst\u00e9mem HX a hlavou E61, z\u016fstaly skoro nezm\u011bn\u011bny.<\/p>\n\n\n\n

 <\/p>\n\n\n\n

Ne\u017e Ernesto Valente a jeho t\u00fdm ve spole\u010dnosti Faema p\u0159i\u0161li s revolu\u010dn\u00edm projektem k\u00e1vovaru E61, trh ovl\u00e1daly v\u00fdlu\u010dn\u011b p\u0159\u00edstroje s p\u00e1kovou technologi\u00ed, tzv. piston lever. Pr\u00e1v\u011b rok 1961 je tak zpravidla pokl\u00e1d\u00e1n za hlavn\u00ed miln\u00edk v evoluci k\u00e1vovar\u016f. Revolu\u010dn\u00ed technologie zalo\u017een\u00e1 na rota\u010dn\u00ed elektrick\u00e9 pump\u011b, bojleru s v\u00fdm\u011bn\u00edkem tepla (tzv. HX \u2013 Heat Exchanger) a extr\u00e9mn\u011b t\u011b\u017ekou mosaznou hlavou s atypick\u00fdm tvarem p\u0159etrvala ve skoro nezm\u011bn\u011bn\u00e9 podob\u011b dodnes. Cel\u00fd syst\u00e9m m\u00e1 za \u00fakol jedin\u00e9: Nep\u0159etr\u017eit\u011b z\u00e1sobovat hlavu k\u00e1vovaru dostate\u010dn\u00fdm mno\u017e- stv\u00edm vody o konzistentn\u00ed teplot\u011b kolem 94 \u00b0C pod fin\u00e1ln\u00edm tlakem 9 bar\u016f a z\u00e1rove\u0148 se starat o nezbytn\u00fd p\u0159\u00edsun p\u00e1ry a vody pro p\u011bn\u011bn\u00ed ml\u00e9ka. I kdy\u017e tento prim\u00e1rn\u00ed po\u017eadavek nezn\u00ed v\u016fbec komplikovan\u011b, zat\u00edm se ho \u017e\u00e1dn\u00e9 spole\u010dnosti nepoda\u0159ilo stoprocentn\u011b splnit.<\/p>\n\n\n\n

V\u011bt\u0161ina profesion\u00e1ln\u00edch k\u00e1vovar\u016f je zalo\u017eena na tzv. v\u00fdm\u011bn\u00edku tepla a technologii hlavy E61. Toto \u0159e\u0161en\u00ed je zdaleka nejjednodu\u0161\u0161\u00ed, nejlevn\u011bj\u0161\u00ed a zaru\u010duje ve v\u00fdsledku velmi stabiln\u00ed teplotu vody. Jak ji\u017e bylo \u0159e\u010deno, tento geni\u00e1ln\u011b jednoduch\u00fd syst\u00e9m z\u016fstal zachov\u00e1n u HX k\u00e1vovar\u016f po cel\u00fdch 60 let! Cel\u00fdch 6 kg v\u00e1\u017e\u00edc\u00ed mosazn\u00e1 hlava E61 je specifick\u00e1 p\u0159edev\u0161\u00edm sv\u00fdm um\u00edst\u011bn\u00edm, kter\u00e9 je nezvykle daleko od t\u011bla. To by norm\u00e1ln\u011b znamenalo velkou ztr\u00e1tu teploty v d\u016fsledku dlouh\u00e9 vzd\u00e1lenosti, kterou voda uraz\u00ed z bojleru ke k\u00e1v\u011b. Ov\u0161em pr\u00e1v\u011b hustota a hmotnost, kterou se mosaz vyzna\u010duje, dok\u00e1\u017eou udr\u017eet teplotu vody v optim\u00e1ln\u00edch mez\u00edch. Ta je nav\u00edc pos\u00edlena cel\u00fdm HX syst\u00e9mem, jen\u017e je zjednodu\u0161en\u011b \u0159e\u010deno zalo\u017een na p\u0159irozen\u00e9 cirkulaci vody a proud\u011bn\u00ed tepla mezi teplej\u0161\u00edm a studen\u011bj\u0161\u00edm prost\u0159ed\u00edm.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Cel\u00fd proces za\u010d\u00edn\u00e1 u rota\u010dn\u00ed pumpy, kter\u00e1 automaticky nas\u00e1v\u00e1 vodu z venkovn\u00edho p\u0159\u00edvodu Studen\u00e1 voda d\u00e1le do v\u00fdm\u011bn\u00edku tepla (podlouhl\u00fd v\u00e1lec z m\u011bdi), jen\u017e je um\u00edst\u011bn v samotn\u00e9m bojleru. Velikost a materi\u00e1l bojleru z\u00e1visej\u00ed p\u0159edev\u0161\u00edm na typu espresso k\u00e1vovaru, ale v\u011bt\u0161inou se pro evropsk\u00fd trh vyr\u00e1b\u00ed z m\u011bdi (v USA je v\u0161ak jej\u00ed pou\u017e\u00edv\u00e1n\u00ed omezeno), m\u00e1 u komer\u010dn\u00edch p\u0159\u00edstroj\u016f topn\u00e9 t\u011bleso o v\u00fdkonu cca 3 500 W a velikost 12 l. Spr\u00e1vn\u011b nastaven\u00e1 teplota\/tlak bojleru je kl\u00ed\u010dem ke kvalitn\u00edmu \u0161\u00e1lku k\u00e1vy. P\u0159i norm\u00e1ln\u00edm provozu je bojler ze \u00be pln\u00fd vrouc\u00ed vody o teplot\u011b 120 \u00b0C (+\/- 2 \u00b0C) a tlaku 0,8\u20131,2 baru. Aby byl zaru\u010dena p\u0159esn\u00e1 teplota je m\u00edsto termostatu vy\u017eit tzv. presostat kter\u00fd naprosto p\u0159esn\u011b sn\u00edm\u00e1 tlak v HX bojleru.<\/p>\n\n\n\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

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