Is there any truth to new over the range Whirlpool microwaves not having a magnetron cooling fan? If so how does this work? How does the magnetron and MOT not overheat?
Fanless Whirlpool Microwave
- Thread starter Chetlaham
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stupid whirlpool
This is the stupidest thing Whirlpool has ever done! This is so stupid! What the heck are these stupid idiots thinking?
This is the stupidest thing Whirlpool has ever done! This is so stupid! What the heck are these stupid idiots thinking?
Its scary to be honest. Way back when magnetrons had a blower strapped to them despite being under driven. How things have changed. I also can't imagine how stinky the cavity would get not being force vented.
So happy my Sharp has a strong fan, near 100% cavity routing and a dedicated exhaust baffle.
So happy my Sharp has a strong fan, near 100% cavity routing and a dedicated exhaust baffle.
air circulation
So how can you expect air circulation to heat the food in a stupid design like that? Get real Whirlpool. Get real! What does combo52 have to say about this?
So how can you expect air circulation to heat the food in a stupid design like that? Get real Whirlpool. Get real! What does combo52 have to say about this?
Over the range microwave ovens
Without a separate cooling fan for the magnetron.
Yes, whirlpool and several other manufacturers have made inexpensive over the range microwaves where they use the exhaust fan blower to also pull air over the magnetron, so the blower is run whenever the Microwave oven is used for heating, the saves construction cost.
U2 surely need a life, this is not the stupidest thing whirlpool has ever done, lol
John
Without a separate cooling fan for the magnetron.
Yes, whirlpool and several other manufacturers have made inexpensive over the range microwaves where they use the exhaust fan blower to also pull air over the magnetron, so the blower is run whenever the Microwave oven is used for heating, the saves construction cost.
U2 surely need a life, this is not the stupidest thing whirlpool has ever done, lol
John
I hope to the cooking cavity is at least vented in some way. I'd hate to have the noisy exhaust fan come on every time I want to reheat something especially before bedtime.
construction costs
That's code for built cheap by the Chinese so we can scam the public. That's it! And this means eliminating the venting fan in the cooking cavity too!
That's code for built cheap by the Chinese so we can scam the public. That's it! And this means eliminating the venting fan in the cooking cavity too!
I wish companies would disclose their internal assets and finances so we know exactly whats necessary and exactly whats driving up their profits just like the government does.
whirlpool superiority
There goes the claim of whirlpool superiority. This proves combo52 wrong. Such arrogance!
There goes the claim of whirlpool superiority. This proves combo52 wrong. Such arrogance!
Whirlpool may have gotten the power-clean right in terms of cleaning, the top filter dryer right in terms of low cost and fast drying, and an easily repairable long lasting top loader, but beyond that Whirlpool is very much over rated. If it were not for Kenmore they never would have gotten so big.
Economy over the range whirlpool microwave oven
I can’t believe you too get sucked into things that you know. Nothing about nothing has changed the microwave oven still vents the air outside or recirculates it depending on how it’s installed. It’s still ventilates the oven cavity and it still cools the magnetron tube.
The only thing that’s different is it now only has one fan motor that uses less energy and it cost less to build and is more reliable, having only one fan motor to make noise or fail.
You guys really oughta research things and try to know what you’re talking about when you put things in print, it’s now here for everyone for all time. It’s no wonder that you two are the most blocked people on AW.
John
I can’t believe you too get sucked into things that you know. Nothing about nothing has changed the microwave oven still vents the air outside or recirculates it depending on how it’s installed. It’s still ventilates the oven cavity and it still cools the magnetron tube.
The only thing that’s different is it now only has one fan motor that uses less energy and it cost less to build and is more reliable, having only one fan motor to make noise or fail.
You guys really oughta research things and try to know what you’re talking about when you put things in print, it’s now here for everyone for all time. It’s no wonder that you two are the most blocked people on AW.
John
to combo52
Seriously? So you're saying that due to what you're saying, our experiences don't matter? That's basically what you're telling us. Even a person with common sense can tell you that having no fan in a microwave is stupid.
How do you expect the magnetron to cool down efficiently or the food to get warm evenly?
Seriously? So you're saying that due to what you're saying, our experiences don't matter? That's basically what you're telling us. Even a person with common sense can tell you that having no fan in a microwave is stupid.
How do you expect the magnetron to cool down efficiently or the food to get warm evenly?
Reply number 11
Hi Jerome First of all my name is John not combo 52. That’s not the way to address someone I don’t call you GE laundry forever.
Do you own one of these Whirlpool microwaves with a single fan motor? I have worked on an installed a number of them. I have not seen any problem with them. You’re talking about something you don’t even own or have worked on apparently.
John
Hi Jerome First of all my name is John not combo 52. That’s not the way to address someone I don’t call you GE laundry forever.
Do you own one of these Whirlpool microwaves with a single fan motor? I have worked on an installed a number of them. I have not seen any problem with them. You’re talking about something you don’t even own or have worked on apparently.
John
Will you guys STOP this stupid fighting, people will buy whatever they want and you can try to say who is stupider. It doesnt matter to anyone but you. I still have a 1977 Whirlpool Mark Series microwave that still works fine,but at max 750 watts, it was much faster in 1977 it seemed, but not now.
I would imagine two large blower wheels going even at low speed makes more noise than a single 4 bladed fan. So no, its not quieter. Or more reliable having one motor run more often.
Off topic: names and nicknames
Combo52 / John (and all the others) it is true that your name is John, but not all the members here know that.
Calling you by your nickname just makes it easier for the reader to follow the discussion, it is not out of disrespect.
Personally, I hate it when someone is addressed by their name rather than their nickname because I do not understand who is talking to whom
Combo52 / John (and all the others) it is true that your name is John, but not all the members here know that.
Calling you by your nickname just makes it easier for the reader to follow the discussion, it is not out of disrespect.
Personally, I hate it when someone is addressed by their name rather than their nickname because I do not understand who is talking to whom
Reply number 15
Hi, thanks for your thoughts, I use combo 52 as my handle on this website ( maybe I should just use John) but I always sign off every post with my name.
A good friend of mine named Jeff here in the Washington area that has over 200 restored major appliances always calls me combo when he sees me. It’s cute but I really don’t like that name I wouldn’t name a child that, loll
You can call me what you like but I preferred being called by my first name thanks everyone.
John
Hi, thanks for your thoughts, I use combo 52 as my handle on this website ( maybe I should just use John) but I always sign off every post with my name.
A good friend of mine named Jeff here in the Washington area that has over 200 restored major appliances always calls me combo when he sees me. It’s cute but I really don’t like that name I wouldn’t name a child that, loll
You can call me what you like but I preferred being called by my first name thanks everyone.
John
reactor
Well-known member
question
One cannot fault Whirlpool for attempting to save manufacturing costs. I can see a couple of potential issues in the design, however. First, let me clarify what I am reading to make sure I am comprehending it correctly.
Whirlpool is diverting some of the airflow, of the OTR microwave's exhaust fan to cool the magnetron, in lieu of a dedicated cooling fan. When the microwave is in operation, the exhaust fan is always in operation as well.
A couple of questions for those who have researched these models of microwaves. Does the exhaust fan operate at a reduced speed, if only being used for magnetron cooling?
And, is there a secondary filter (after the primary mesh grease filter) for the diverted air going to the magnetron?
I can see a few potential negative consequences of this arrangement.
A.). If one is using the exhaust fan, while cooking. Then hot, moisture laden air is being used to cool the magnetron. The air may have some grease content as well. While the typical aluminum mesh filters are good at catching grease content, they are not perfect. Micro droplets of grease, may plate out in the cooling fins of the magnetron over time. This would also attract dirt from the air.
A secondary filter would help keep the magnetron clean, but would be difficult for the consumer to access, and we all know the odds of the average consumer who would clean this regularly, even if it were easily accessible, are not overly high. There is some potentiality of reduced microwave life due to being cooled with greasy, hot and moisture/steam laden air. Even when the microwave is not in operation as the same time one is using the cooktop, the exhaust fan will still be pouring air over the magnetron.
B.) This scenario is for those who have the exhaust, on Whirlpool's OTR microwave set up to discharge outdoors. Any time the microwave is in operation, indoor air will be vented/dumped outside. This is neither economically, nor environmentally conscious.
Let's say the exhaust fan, when being used for magnetron cooling only, does not operate at reduced speed. Let's say the exhaust fan operates in the range of 200 to 400 cfm (cubic feet per minute). Let's say someone put in a frozen ("tv") dinner in the microwave and cooks it for five minutes.
During that cooking time (using an average 300 cfm figure), then 1500 cubic feet of heated or cooled indoor air has been dumped outside. Let's say the consumer has a small 10 x 10 foot kitchen, with an eight foot ceiling. That gives their kitchen 800 cubic feet of volume of air. Cooking one frozen dinner has exhausted almost two entire volumes of room air to the outdoors. Air that the consumer may have had to pay to heat or cool.
I would assume Whirlpool gave that consideration and operates the exhaust at a reduced delivery rate when used only for magnetron cooling. Even so, it still adds to the cost of cooking that frozen dinner, when you have to recool or reheat the replacement air that was brought into the house to compensate for that which the microwave removed.
For those like me, who live by their microwave (as in for three meals a day, lol) and have it exhausted outdoors, a lot of energy will be utilized to compensate for the indoor air being lost to the outside, everytime the microwave is turned on.
One cannot fault Whirlpool for attempting to save manufacturing costs. I can see a couple of potential issues in the design, however. First, let me clarify what I am reading to make sure I am comprehending it correctly.
Whirlpool is diverting some of the airflow, of the OTR microwave's exhaust fan to cool the magnetron, in lieu of a dedicated cooling fan. When the microwave is in operation, the exhaust fan is always in operation as well.
A couple of questions for those who have researched these models of microwaves. Does the exhaust fan operate at a reduced speed, if only being used for magnetron cooling?
And, is there a secondary filter (after the primary mesh grease filter) for the diverted air going to the magnetron?
I can see a few potential negative consequences of this arrangement.
A.). If one is using the exhaust fan, while cooking. Then hot, moisture laden air is being used to cool the magnetron. The air may have some grease content as well. While the typical aluminum mesh filters are good at catching grease content, they are not perfect. Micro droplets of grease, may plate out in the cooling fins of the magnetron over time. This would also attract dirt from the air.
A secondary filter would help keep the magnetron clean, but would be difficult for the consumer to access, and we all know the odds of the average consumer who would clean this regularly, even if it were easily accessible, are not overly high. There is some potentiality of reduced microwave life due to being cooled with greasy, hot and moisture/steam laden air. Even when the microwave is not in operation as the same time one is using the cooktop, the exhaust fan will still be pouring air over the magnetron.
B.) This scenario is for those who have the exhaust, on Whirlpool's OTR microwave set up to discharge outdoors. Any time the microwave is in operation, indoor air will be vented/dumped outside. This is neither economically, nor environmentally conscious.
Let's say the exhaust fan, when being used for magnetron cooling only, does not operate at reduced speed. Let's say the exhaust fan operates in the range of 200 to 400 cfm (cubic feet per minute). Let's say someone put in a frozen ("tv") dinner in the microwave and cooks it for five minutes.
During that cooking time (using an average 300 cfm figure), then 1500 cubic feet of heated or cooled indoor air has been dumped outside. Let's say the consumer has a small 10 x 10 foot kitchen, with an eight foot ceiling. That gives their kitchen 800 cubic feet of volume of air. Cooking one frozen dinner has exhausted almost two entire volumes of room air to the outdoors. Air that the consumer may have had to pay to heat or cool.
I would assume Whirlpool gave that consideration and operates the exhaust at a reduced delivery rate when used only for magnetron cooling. Even so, it still adds to the cost of cooking that frozen dinner, when you have to recool or reheat the replacement air that was brought into the house to compensate for that which the microwave removed.
For those like me, who live by their microwave (as in for three meals a day, lol) and have it exhausted outdoors, a lot of energy will be utilized to compensate for the indoor air being lost to the outside, everytime the microwave is turned on.
Back to the topic - these are NOT fanless microwave ovens. They are microwave ovens that use the rangehood fan to cool the magnetron. Just one fan doing two tasks, they are not "Fanless."
I have never used one of these microwave ovens nor even seen one, but it is a simple enough concept to understand. The rangehood fan creates an air flow, some of that air is diverted to cool the magnetron if the microwave oven is on.
Over the range microwave ovens with integrated rangehood aren't a thing here in Australia, I've never seen one here and I don't like the look of them. But I don't waste time calling them 'stupid."
If you don't like them, don't buy one.
edit: I wrote this post at about the same time as reactor wrote the post above - hence the duplicated information.
I have never used one of these microwave ovens nor even seen one, but it is a simple enough concept to understand. The rangehood fan creates an air flow, some of that air is diverted to cool the magnetron if the microwave oven is on.
Over the range microwave ovens with integrated rangehood aren't a thing here in Australia, I've never seen one here and I don't like the look of them. But I don't waste time calling them 'stupid."
If you don't like them, don't buy one.
edit: I wrote this post at about the same time as reactor wrote the post above - hence the duplicated information.
