Just slightly bigger than the average coffee grinder, the "Quiet Morning" TM grinder silencer works like this:
Open the clear case, plug your unit into the outlet provided inside.
Close the airtight door and push the button which activates the silent air pump evacuating the air out of the unit.
Push the grind button that turns the unit on. If you've got the kind you need to push down, push the large button at the top that in turn pushes down on your coffee grinder.
Inspired by bs0u0155s Coffee Crusher which I liked, so I tried to dumb it down a bit.-- doctorremulac3, Feb 08 2022 Inspired by Coffee_20Crusher [doctorremulac3, Feb 08 2022] Couple of guys playing with different designs. https://www.youtube...watch?v=m9XAW8cloiQNone that are particularly good. Just boxes. [doctorremulac3, Feb 08 2022] Vacuum Blender Vacuum_20Blender [bs0u0155, Feb 09 2022] Universal Declaration of Human Rights https://www.un.org/....org/files/udhr.pdf [Voice, Feb 09 2022] The supports will transmit the sound to the outside of the case.
How loud is the vacuum pump?-- pocmloc, Feb 08 2022 Coffee Grinder Amplifier: contact microphones on the casing feed a powerful pre-amp and power amplifier, which drives a massive array of speakers including a fan woofer. Now the entire neighbourhood can hear you grind your coffee.
Low-tech coffee grinder amplifier: The grinder is bolted to the centre of a 8x4 sheet of plywood which is supported at the edges.-- pocmloc, Feb 08 2022 Yea, it would need to be carefully designed. the feet would be well insulated from the body and the vacuum pump woud be encased in a solid air tight container. But it would be in the envelope too so even if it made a slight buzz it would quickly fade out.
Hey, that would tell you it's ready!
Wonder if you could take your contact mic and amplifier and do a phase cancellation thing?-- doctorremulac3, Feb 08 2022 By the way, goes without saying that having a coffee grinder with this included from the factory might have a market.-- doctorremulac3, Feb 08 2022 Okay, now I have to look into actually doing this.
Occurred to me that after you silently grind your coffee, you put it into a special container with a one way air valve, put it in, hit the vacuum button and now you're just stored your fresh ground coffee in a vacuum.
THAT might be the thing that pushes this over the finish line from weird idea to something that people actually buy.
Sharper Image here I come.-- doctorremulac3, Feb 08 2022 //silent air pump//
huh? Well I suppose if you enclose the vacuum pump in a vacuum, the vacuum pump will be silent.-- Voice, Feb 08 2022 //silent air pump//
Well, mainly it would be insulated. Vacuum pumps are a lot easier to keep quiet than a grinder.-- doctorremulac3, Feb 08 2022 Maybe we can do a range of products with my vacuum blender? <link>
//I'm surprised they couldn't come up with something better?//
They've invented the cupboard. They did a bad job of it too, one of the first priorities would be sealing, which they haven't bothered with. If there are air gaps, then the air inside is connected to the outside. Seal the doors with foam or something, and you improve things a lot. Then, the sound has to vibrate the enclosure, which then has to vibrate the air outside, energy being lost as heat in the conversion.
//stored your fresh ground coffee in a vacuum.//
I suppose this means there's no oxygen to worry about, but won't this induce the coffee to off-gas it's volatiles? Do coffee people like the volatiles?-- bs0u0155, Feb 09 2022 Wait, bs0u0155, was your Vacuum Blender idea exactly the same a mine? Either you've figured out a way to go back in time or you've already suggested this, no?-- doctorremulac3, Feb 09 2022 // your Vacuum Blender idea exactly the same a mine?//
No, mine was a blender, yours is a coffee grinder. I can see shared marketing opportunities, however.-- bs0u0155, Feb 09 2022 Mine has the vacuum container thing I guess. Go in halves? I won’t get stuff made in China anymore though. Human rights over profits eh? Looking into South Korea which I totally support. Maybe India.-- doctorremulac3, Feb 09 2022 //Human rights over profits eh?//
That's got to have good karma connotations. However, using the same logic, you have to wonder what people did to deserve having their human rights abused.
Having just read the declaration of human rights on the UN website, I wonder how they came to be held in high regard? As a document, it's self-referential, sexist and redundant by #4. They should really bring in a good writer to tighten it up. It reads like it was bashed out over dinner by a group with mixed linguistic skills.-- bs0u0155, Feb 09 2022 //It reads like it was bashed out over dinner by a group with mixed linguistic skills.//
lol-- Voice, Feb 09 2022 Not saying it isn't, (yet) but how is it sexist? I see //without distinction of any kind, such as... sex// and //No one....//(shall be subjected to x) and //All are equal/// That's as egalitarian as you can get.
Oh, I do see://Motherhood and childhood are entitled to special care and assistance// which is gynocentric and excludes the rights of fathers. But I would argue this is merely an artifact of our collective inborn and instinctive gynocentrism, which is a result of most non-gynocentric people failing to have children who lived and non-gynocentric societies failing to pass on their memes.-- Voice, Feb 09 2022 //Not saying it isn't, (yet) but how is it sexist?//
"Brotherhood" stood out to me, and I'm not exactly the sensitive type, particularly since the word is brought up when it's not necessary.
I rewrote the first few as an example in a new idea. I haven't even finished carefully reading them yet, but I reckon we could trim at least 4.-- bs0u0155, Feb 09 2022 random, halfbakery