HOUSEMASKⅡ(With Makita HEPA Filter Adapter)

HOUSEMASKⅡMAKITA HEPA filter adapter

It was created because the amount of dust in the room sometimes became abnormal due to air pollution caused by PM2.5 and photochemical oxidants.
In Japan，when the outside temperature is high and the amount of dust is high，the concentration may be high indoors。
In this case，air quality was improved by using the air conditioner。
I also used an air purifier
In addition，filtering the outside air reduced the amount of dust in the room，so we created an adapter that can be used with a HEPA filter.

I tried filtering the outside air easily with a HEPA filter for vacuum cleaners from makita

Makita HEPA Filter Collects 99.97%of 0.3 to 1μm dust A-68965

3D打印在adapter

A thin plastic plate that is easy to work with and has a certain degree of strength is processed according to the circular shape of the adapter(Photo)

If necessary，attach the adapter to the plastic plate and fix it with glue etc。

Select a window with aheight that is easy to install，process the plastic plate according to the window frame，and attach it to the window frame(Photo)

A few things to note

(1)It is possible to measure and confirm whether the ventilation is properly and effective。

(2)When installing easily using a window，make sure there are no gaps。

Air can pass through the filter well by sealing the gaps between the windows.

Regarding the cleanliness of the air，it is possible to judge whether the air is clean by the sensation of the wind hitting the skin，but it is easier to measure(Photo)。

Regarding the installation of the filter，I think that it is common to attach the filter to the ventilation port。

When installing on the window frame as shown in the photo，it is necessary to consider airtightness。

A window frame that is at a reachable height and that has a smaller window frame size is easier to test.

In addition，since there is also a security problem，we recommend that you install it temporarily to check the filter effect。

·If you use an air purifier at the same time，it becomes easier to check that the air has been cleaned。

·When the humidity of the outside air is high，the filter effect is that case，using the air conditioner together reduced the amount of dust in the room。

·Convenience such as ease of installation，durability，and filter performance has been improved compared to the original frame using surgical mask filters.

Added July 10，2023

In addition，this design will be an upward compatible version of the design released at the same time as HouseMask

If it is difficult to obtain a HEPA filter，it is possible to use a surgical mask non-woven fabric or a high-performance filter。

Added July 21，2023
Depending on the structure of the house，such as the height and direction to install the filter，there is an optimum location，so changing the installation position or installing multiple filters changed the ventilation situation.
Basically，if you install it in a sunny place，it seems that ventilation is good due to the temperature difference etc。

房屋面罩ⅡMAKITA HEPA filter adapter

PM2.5，由于光化學(xué)氧化劑對空氣中的污染，室內(nèi)的灰塵量有時會變成異常值，所以制作了
在日本，外部氣溫高，塵埃量多的時候室內(nèi)有高濃度的情況
在這種情況下，通過使用空調(diào)，空氣質(zhì)量得到了改善
同時使用了空氣凈化器。
另外，通過過濾外部空氣，發(fā)現(xiàn)室內(nèi)的集塵量降低，因此制作了可以使用HEPA過濾器的適配器

用makita的吸塵器用HEPA過濾器，簡單地過濾了外部空氣

獼猴桃HEPA過濾器采集99.97%0.3~1μm的粉塵A-68965

3D打印適配器

配合適配器的圓形，加工容易工作且有一定強(qiáng)度的薄塑料板之類的東西(照片)

如果需要將適配器安裝在塑料板上，用膠水等固定，使其緊密接觸

選擇高度容易安裝的窗戶，根據(jù)窗框加工塑料板，并將其安裝在窗框上(照片)

有幾件事需要注意。

1是否有正確有效的通風(fēng)，可以測量和確認(rèn)

2使用窗戶簡易安裝時，要考慮到?jīng)]有間隙

窗玻璃之間的縫隙等也密封的話，空氣會很好地通過過濾器

關(guān)于空氣的凈化，也可以通過與皮膚接觸的風(fēng)的感覺來判斷空氣是否清潔，但是測量比較簡單(照片)

關(guān)于過濾器的設(shè)置，我想通常在通風(fēng)口等處安裝過濾器是不是很普遍

像照片一樣設(shè)置在窗框上時，需要考慮氣密性

窗框是手可及的高度，窗框尺寸小的窗框更容易試著設(shè)置

另外，由于還存在防范上的問題，所以推薦為確認(rèn)濾鏡效果而暫時設(shè)置

·如果同時使用空氣凈化器，空氣的凈化變得容易確認(rèn)了

·外部空氣濕度高時過濾效果會降低。在這種情況下，如果同時使用空調(diào)，室內(nèi)的塵埃量就會降低

·與最初使用伺服掩模過濾器等的框架相比，提高了設(shè)置的容易性、耐久性、過濾器性能等便利性。

2023年7月10日補記

另外，這個設(shè)計是作為HouseMask同時公開的設(shè)計的上位互換版

在難以獲得HEPA過濾器的情況下，可以使用伺服掩模的無紡布和高性能過濾器等

2023年7月21日補記

安裝過濾器的高度、方向等根據(jù)房屋的建造有最合適的場所，所以通過改變安裝位置、安裝多個，換氣狀況發(fā)生了變化

基本上安裝在陽光好的地方的話，溫差等的話通氣會比較好