Change the header name in wordpress

First you have to find the below code in header.php file.

if (is_home()) {bloginfo(’name’) ;} else { wp_title(’ ‘);}

After that delete this code and paste the below one

if(is_home()) {
bloginfo(’title’);
echo ‘ | ‘;
bloginfo(’description’);
} else{
wp_title(”);
echo ‘ | ‘;
bloginfo(’name’);
}