Method for eliminating water dripping sound of high-capacity evaporative humidifier

Abstract

The invention belongs to the technical field of household appliances, and discloses a method for eliminating water dripping sound of a high-capacity evaporative humidifier. When the high-capacity evaporative humidifier operates, water sprayed on a wet film cannot be completely evaporated, and the residual water flows back to a water tank through a water drainage hole of a wet film basket and drops on the liquid level of the water tank of the humidifier, so that clatter water dripping sound can be generated. According to the invention, the drain hole of the wet film basket of the humidifier is transformed into the drain pipe protruding towards the water tank of the humidifier. The drain pipe is connected with a water pipe. The water conveying pipe is made of plastic or rubber. One end of the water pipe is connected with the drain pipe, and the other end droops in the humidifier water tank. Water flowing out of the wet film basket is directly conveyed to the position below the liquid level of the humidifier water tank through the water conveying pipe. Therefore, the water dripping sound generated when the large-capacity evaporative humidifier operates is eliminated. The noise generated when the high-capacity evaporative humidifier operates in the night mode is reduced by 10.2 decibels.

Description

[0001] This invention belongs to the technical field of household appliances. It is a technical solution for eliminating the dripping sound of large-capacity evaporative humidifiers. Existing technology:

[0002] Currently, typical evaporative humidifiers have a water tank capacity of 3-6 liters. In Northeast my country, where the long winter lasts 5-6 months, indoor air humidity is only around 20%. To raise the humidity of a 100-square-meter room to around 50%, the humidifier needs to evaporate 12-16 liters of water per day. Therefore, a standard-capacity evaporative humidifier requires refilling the water tank 2-4 times a day. This is indeed somewhat inconvenient for users. To reduce this inconvenience, the water tank capacity of evaporative humidifiers needs to be increased. Thus, large-capacity (water tank capacity greater than 10 liters) evaporative humidifiers have emerged.

[0003] In the operation of a large-capacity evaporative humidifier (hereinafter referred to as a humidifier), water needs to be added to the water tank located at the bottom of the humidifier. The humidifier's water pump then delivers the water to the upper part of the humidifier. At the top of the humidifier is a device containing a wet film, which can be called a wet film basket. Above the wet film basket is a circular water tank with many small holes at the bottom. The humidifier's water pump delivers water from the tank into the circular water tank, and the water in the tank flows through the small holes at the bottom of the tank onto the wet film below. The fan of the humidifier blows air across the wet film, causing the moisture on the film to evaporate. The fan then exhausts the humidified air into the room through the humidifier's air outlet, thereby increasing the indoor air humidity.

[0004] The water sprayed onto the wet film does not evaporate completely. The remaining water flows back into the humidifier's water tank through the drain hole at the bottom of the wet film basket. As the water on the wet film continues to evaporate, the water level in the humidifier's water tank gradually decreases. The distance between the drain hole of the wet film basket and the water level in the tank also gradually increases. The water flowing from the drain hole of the humidifier's wet film basket drips onto the water level in the humidifier's water tank, creating a splashing sound. As the water level in the humidifier's water tank gradually decreases, the splashing sound also increases.

[0005] When a humidifier operates at high power, the exhaust fan can produce a noise level of up to 69 decibels. To reduce indoor noise, many users often use the humidifier's night mode. In this mode, the humidifier operates at low power, and the exhaust fan noise is relatively low. However, the dripping sound of the humidifier becomes noticeable. Using a decibel meter, this dripping sound can reach approximately 55 decibels. At night, 55 decibels of noise is enough to disrupt sleep.

[0006] The purpose of this invention is to eliminate the splashing and dripping sound produced when a humidifier is running.

[0007] The technical solution of this invention is as follows: A water supply pipe is connected to the drain hole of the wet film basket to directly transport the water flowing out of the drain hole to below the liquid level in the humidifier's water tank. To facilitate connection with the water supply pipe, the humidifier drain hole can be designed at the center of the bottom of the wet film basket, forming a circular tube protruding towards the water tank. In other words, the drain hole is transformed into a drain pipe. The outer diameter of the distal end of the drain pipe (the end connected to the water supply pipe) is slightly smaller than that of the proximal end. The inner diameter of the drain pipe is 4-8 mm, and its length is approximately 15 mm, as shown in the attached diagram. The water supply pipe uses a plastic or rubber flexible hose. Its inner diameter is slightly smaller than the outer diameter of the drain pipe. The length of the water supply pipe is 2-3 cm from the drain hole to the bottom of the humidifier's water tank (the humidifier will automatically stop when the water level in the humidifier's water tank is below 3 cm). One end of the water supply pipe is fitted over the drain pipe and secured by the elasticity of the plastic or rubber hose. The other end hangs inside the water tank.

[0008] Attached image description: Figure 1 This is a schematic diagram of the structure of the present invention, 1-wet film basket, 2-wet film, 3-drainage hole partial cross-sectional view.

[0009] The positive effects of implementing this invention are as follows: After installing the water supply pipe described in this invention at the drain hole of the humidifier's wet film basket, when the humidifier is running in night mode, the water discharged from the drain hole is directly delivered to the water level below the humidifier's water tank through the water supply pipe, thus eliminating the dripping sound. When the humidifier is running in night mode, we tested the noise levels with and without the water supply pipe installed at the drain hole. Testing method: A Delixi Electric DLX-2205 digital noise meter was used to test a Yadu SZ1000-YSS120C humidifier (its water tank capacity is 12 liters, and the drain hole is 30 cm from the bottom of the water tank). During testing, to more directly reflect the noise level of the humidifier, the noise meter was placed 10 cm above and 10 cm to the side of the humidifier's exhaust vent. During the test, the water level in the humidifier's tank was approximately 12 cm from the bottom. Because the noise meter is highly sensitive and its readings change rapidly, making accurate recording difficult, a camera was used to take a picture every 2 seconds to record the noise meter reading. This process was repeated 10 times for each of the two scenarios.

[0010] The following are the test results when the drain hole of the wet film basket was not connected to a water supply pipe: the units are decibels.

[0011] 1st time 2nd time 3rd 4th 5th 6th 7th 8th 9th 10th 57.8 55.0 63.7 52.7 50.5 52.5 55.5 61.9 53.0 51.7

[0012] The following are the noise test results after the water supply pipe was installed at the drain hole of the wet film basket: the unit is decibels.

[0013] 1st time 2nd time 3rd 4th 5th 6th 7th 8th 9th 10th 44.6 45.2 45.1 44.5 45.1 45.1 44.8 45.5 45.9 45.9

[0014] Based on the above test results, the average noise level of the humidifier in night mode without a water pipe is 55.4 decibels. With the water pipe connected to the drain hole of the humidifier's wet film basket, the average noise level is 45.2 decibels. This indicates that connecting the drain hole to the water pipe reduces the noise level in night mode by 10.2 decibels, or 18.4%, compared to when the water pipe is not connected. This demonstrates that installing a water pipe at the drain hole of the humidifier's wet film basket significantly reduces noise. Furthermore, the humidifier without a water pipe exhibits a noise level variation of 11.4 decibels in night mode, which can negatively impact sleep. In addition, by adopting the technical solution of this invention, the humidifier's water tank capacity can be increased to 20-30 liters with minimal increase in production costs, reducing the need to refill the water tank from 2-4 times per day to once every 2-3 days.

Claims

1. In the large-capacity evaporative humidifier of the present invention, a water supply pipe is connected to the drain hole of the wet film basket to directly transport the water flowing out of the drain hole of the wet film basket to below the liquid level of the humidifier water tank.

2. As described in claim 1, the large-capacity evaporative humidifier can have its drain hole designed at the center of the bottom of the wet film basket, forming a circular tube protruding towards the water tank. The drain hole is modified into a drain pipe. The outer diameter of the distal end of the drain pipe is slightly smaller than that of the proximal end. The water supply pipe uses a plastic or rubber flexible hose. Its inner diameter is slightly smaller than the outer diameter of the drain pipe. The length of the water supply pipe is 2-3 cm from the drain hole to the bottom of the humidifier's water tank. One end of the water supply pipe is fitted over the drain pipe, while the other end hangs inside the water tank.

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