boiler 音标拼音: [b'ɔɪlɚ]
n . 煮器,汽锅,锅炉
煮器,汽锅,锅炉
boiler n 1 :
sealed vessel where water is converted to steam [
synonym :
{
boiler }, {
steam boiler }]
2 :
a metal pot for stewing or boiling ;
usually has a lid [
synonym :
{
kettle }, {
boiler }]
Boiler \
Boil "
er \,
n .
1 .
One who boils .
[
1913 Webster ]
2 .
A vessel in which any thing is boiled .
[
1913 Webster ]
Note :
The word boiler is a generic term covering a great variety of kettles ,
saucepans ,
clothes boilers ,
evaporators ,
coppers ,
retorts ,
etc .
[
1913 Webster ]
3 . (
Mech .)
A strong metallic vessel ,
usually of wrought iron plates riveted together ,
or a composite structure variously formed ,
in which steam is generated for driving engines ,
or for heating ,
cooking ,
or other purposes .
[
1913 Webster ]
Note :
The earliest steam boilers were usually spheres or sections of spheres ,
heated wholly from the outside .
Watt used the wagon boiler (
shaped like the top of a covered wagon )
which is still used with low pressures .
Most of the boilers in present use may be classified as plain cylinder boilers ,
flue boilers ,
sectional and tubular boilers .
[
1913 Webster ]
{
Barrel of a boiler },
the cylindrical part containing the flues .
{
Boiler plate }, {
Boiler iron },
plate or rolled iron of about a quarter to a half inch in thickness ,
used for making boilers and tanks ,
for covering ships ,
etc .
{
Cylinder boiler },
one which consists of a single iron cylinder .
{
Flue boilers }
are usually single shells containing a small number of large flues ,
through which the heat either passes from the fire or returns to the chimney ,
and sometimes containing a fire box inclosed by water .
{
Locomotive boiler },
a boiler which contains an inclosed fire box and a large number of small flues leading to the chimney .
{
Multiflue boiler }.
Same as {
Tubular boiler },
below .
{
Sectional boiler },
a boiler composed of a number of sections ,
which are usually of small capacity and similar to ,
and connected with ,
each other .
By multiplication of the sections a boiler of any desired capacity can be built up .
{
Tubular boiler },
a boiler containing tubes which form flues ,
and are surrounded by the water contained in the boiler .
See Illust . {
of Steam boiler },
under {
Steam }.
{
Tubulous boiler }.
See under {
Tubulous }.
See {
Tube },
n .,
6 ,
and 1st {
Flue }.
[
1913 Webster ]
Boiler \
Boil "
er \,
n .
A sunken reef ;
esp .,
a coral reef on which the sea breaks heavily .
[
Webster 1913 Suppl .]
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