Haier air box is spherical in appearance, 9cm in diameter and 140g in weight. This ball is another masterpiece of Haier in the field of intelligent air management after Tianzun Air Conditioner. Compared with the Tianzun air conditioner, the air box is certainly a very civilian solution. Compared with other air detection products on the market, the execution and iteration speed of the air box are also quite good, and it will soon enter the open pre-sale stage.

How about the internal skill of the air box? Let's see the violent dismantling of Lei Feng.com (under 18 years old, please watch with your parents).

Step 1: The air box is quite round from all angles, and there is no way to start.

Step 2: But it has a base, which is actually a piece of soft glue.

Step 3: Uncover the four screws behind the soft glue, but you will soon find that the air box is still closed after all the screws are removed. A circle of buckles in the center perfectly sealed the shell.

Step 4: Since the whole sphere is sealed by snap, we have to use a little violence here. Use a crowbar to pry the box open along the base.

Pry the other side in the same way.

Step 5: pry off the two sides as shown in the figure, and there is a metal plate of counterweight at the bottom. All the circuits were exposed.

Step 6: Let's review the main functions of the air box, PM2.5 detection, VOC detection, temperature and humidity detection, and infrared control.

After disassembling, it can be seen that there are three interconnected circuit boards in total. In order to adapt to the spherical appearance, they have been adjusted to the current state.

The top red box is the WiFi module, which realizes the communication between the air box and the home network. The yellow frame is an infrared emission tube.

The WiFi module model is EMW3162. Above is the very important infrared transmitting module in the air box. The six direction infrared transmitting tube ensures that the electrical appliances in every corner of the room can receive the control signal of the electrical appliances.

Step 7: The middle of the vertical circuit board is hollowed out, that is, the transparent holes we see on the appearance of the air box are actually used to detect PM2.5.

back.

It can be seen that the sensor used should be Sharp's dust sensor module, and the detection principle is light scattering technology. If you continue to unscrew the module, you can see the inside of the sensor and a pair of lenses.

The part marked red is a pair of lenses. The sensor mainly detects the reflected light of particles in the air through an infrared light-emitting diode and a phototransistor behind the lens, which are arranged diagonally.

The advantage of such sensors is that their power consumption is generally low.

You can take a look at the principle of detection.

Step 8: Finally, a family photo.

At this time, the streaking air box still works normally.

Fan Jiaxin also mentioned in an interview with the author that many sets of ID design schemes had been made before and after the air box, and the final spherical scheme was finally decided by netizens, so a lot of effort had been put into the board.

The biggest purpose of the air box is to automate the air equipment (air conditioner, purifier) at a lower cost, so the infrared module is very important in this. We can also see from the intuitive hardware that the team of Air Box has made considerable efforts to balance the product threshold, ease of use and industrial design.