How does the piano need moisture protection in rainy weather?

There is a rainy season every year. How should the piano be moistureproof in rainy season? Here are several methods to prevent moisture.

Of course, first of all, you should open as few doors and windows as possible to prevent moisture from entering the room.

A, moistureproof pipe

Dampproof pipe is the most commonly used tool for piano moistureproof. Moisture-proof tube is actually an electric heating tube designed for piano. Its working principle is to increase the temperature inside the piano and minimize the intrusion of environmental moisture into the piano. At present, most piano users use Zhujiang brand moisture-proof pipes: the power is 20W, and the surface temperature of the pipes is 50 degrees Celsius (plus or minus 10%).

The advantage of this moisture-proof method is that it is very simple to use after installation (just plug it in), but the disadvantage is that it needs to be installed, and the piano user should control the use time reasonably, and because of the electric heating tube, the temperature difference between the inside of the piano and the indoor environment can not be avoided (although it is very small). In addition, there is also a moisture-proof pipe with automatic switch function on the market, which will be opened or closed according to the humidity change.

When the moisture-proof pipe is opened, a rag is placed under the piano cover to form a gap for the heated moisture to escape.

Second, the dehumidification box

Dehumidification box is a transparent plastic box filled with white powder. After opening the package for a period of time, it will absorb some water in the box. The maximum water absorption depends on the specific model, and 650ML is more common. This is a common moistureproof and dehumidifying tool for southern families. Mostly used in wardrobes, cabinets and other places, and sold in supermarkets. Price 4~6 yuan/box. If it is used on the piano, it is placed on the bottom plate inside the piano. You can put 2~3 boxes at a time, and then change them when the water is full. Generally, the service life of 3 boxes is 6~ 10 month.

The advantages of this moisture-proof method are: it does not need to be installed, and it absorbs moisture actively, instead of passive moisture-proof like a moisture-proof tube, and it will not change the temperature in the piano. Disadvantages: it must be placed stably, and it must be taken out when moving the piano. Once the moisture in the wet box flows into the piano body, it will cause "disaster" to the piano. Generally, when the box is tilted or inverted, the water inside will not flow out. ) The position of dehumidification box in upright piano should be inside the lower door panel. (Some netizens directly opened the piano cover and put the hammer on it because they didn't understand the result. As a result, when playing the piano, the hammer moved and the wet box naturally knocked over. The liquid inside is so corrosive that the strings have to be scrapped! )

On the platform piano (grand piano), this method is often used.

Third, air conditioning.

Household air conditioners have dehumidification function. With this function, the indoor humidity can be discharged to the outside, thus changing the environmental humidity of the piano.

The advantage is that it can change the humidity of the whole environment, instead of just changing the humidity inside the piano like a wet box. Disadvantages: daily use (generally 1~2 hours) will also reduce the indoor temperature. It has been reported before that air conditioning has the best dehumidification effect at around 28 degrees.