CN105725776A - Noise-reducing and purifying electric kettle - Google Patents

Abstract

The invention discloses a noise reduction and purification electric kettle, which comprises a kettle body, a detachable kettle bottom installed on the bottom of the kettle body and a heating base; Medium, the lower surface of the porous heat-conducting medium is in complete contact with the heat-conducting surface of the pot bottom, and the upper surface communicates with the inner cavity of the pot body. When in use, the porous medium is placed in the groove at the bottom of the kettle body, the bottom plate is screwed with the lower part of the kettle body, and a sealing ring is used to seal it. The main technical features are: when heating, the material is in close contact with the heating surface at the bottom of the pot, reducing the average diameter of the boiling bubbles. At the same time, based on the good sound absorption and vibration reduction and heat conduction capabilities of porous materials, it can effectively reduce noise, strengthen heat transfer, and shorten heating time. time, reducing energy consumption while reducing noise pollution. In addition, based on the adsorption of porous materials, it can effectively absorb harmful elements in water and play a role in purifying water sources.

Description

Noise reduction and purification electric kettle

【Technical field】

The invention relates to an electric heating device, in particular to a noise reduction and purification electric kettle.

【Background technique】

At present, the known electric kettle is composed of a kettle cover, a filter screen, a kettle body, a steam temperature sensing element, a sealing ring, a chassis, a dry burn protector, a power supply base, a connecting head and the like. In a general electric kettle, the water inside it reaches the nucleate boiling stage from the isolated bubble area during the heating process. Due to a series of complex processes such as nucleation, growth, merger, and rupture of the bubbles, cavitation noise is generated, causing environmental noise pollution. Simultaneously, because the heating area between the bottom of the kettle and the water body is relatively small, it takes a long time to heat the water to boiling. Moreover, heavy metal elements such as chlorine and aluminum in the water will not only form scale and deteriorate heat transfer, but will also cause great harm to the human body.

【Content of invention】

The object of the present invention is to solve the above-mentioned problems in the prior art, and provide a noise reduction and purification electric kettle that can effectively reduce noise, enhance heat transfer, shorten heating time, purify water quality, and is economical and environmentally friendly.

In order to achieve the above object, the present invention adopts the following technical solutions to achieve:

A noise-reducing and purifying electric kettle, comprising a kettle body, a detachable kettle bottom installed at the bottom of the kettle body, and a heating base; the kettle bottom and the kettle body are sealed and connected; a porous heat-conducting medium is arranged between the kettle bottom and the kettle body, and the porous heat-conducting The lower surface of the medium is in full contact with the heat-conducting surface of the bottom of the pot, and the upper surface is connected with the inner cavity of the pot body.

The further improvement of the present invention is:

The top of the kettle body is provided with a kettle cover and a water outlet, and a filter screen is arranged at the water outlet.

The bottom of the kettle body is provided with a boss, and the outside of the boss is provided with an internal thread, and the inner side of the bottom of the kettle is provided with an external thread matched with the external thread of the boss at the bottom of the kettle body, and the thread connection is sealed by a sealing ring.

The sealing ring is connected with the porous heat-conducting medium in a clearance fit manner.

The porous heat conduction medium adopts carbon-based porous material or metal porous material.

A switch is arranged on the bottom of the kettle.

The cavity formed by the porous heat-conducting medium, the pot body and the bottom of the pot fits in an interference manner.

A dry-boiling protector is arranged in the heating base, and a temperature-sensing element is arranged in the kettle body.

Compared with the prior art, the present invention has the following beneficial effects:

In the present invention, a porous heat-conducting medium is arranged between the pot body and the pot bottom. When in use, the porous heat-conducting medium is placed in the boss at the bottom of the pot body. The pot bottom and the lower part of the pot body are screwed together. Close the lid when full of water. During the heating process, since the thermal conductivity of the smooth heating surface of the pot bottom and the porous material is much greater than that of the smooth surface of the pot bottom and water, the convective heat transfer between the heating surface and water is much smaller than the conduction heat transfer between the heating surface and the porous material. Most of the heat generated at the bottom of the pot will be transferred to the porous material first, and then conduct convective heat exchange with water, which is equivalent to increasing the heat transfer area between water and heat source, thereby shortening the heating time and achieving the purpose of energy saving and emission reduction. At the same time, when the sound wave is incident on the surface of the porous material, the vibration generated by the sound wave will cause the fluid movement in the small hole or gap, resulting in friction with the hole wall, and the friction and viscous force will convert a considerable part of the sound energy into heat energy. Sound wave attenuation and reflection sound weakening achieve the purpose of sound absorption. Using this property can have a good effect of sound absorption and noise reduction. And based on the excellent adsorption performance of porous materials, it can absorb harmful elements contained in water and play a role in purifying water quality.

The invention can significantly reduce the noise generated during the heating process of the kettle, accelerate heat transfer, shorten heating time, save energy and reduce emission, and can absorb harmful elements in water to purify water quality. In addition, the porous material is detachable for easy cleaning and replacement.

【Description of drawings】

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is a sectional view of the present invention;

Fig. 3 is a comparison chart of noise-time experimental results between the present invention and the prior art.

Among them, 1-filter screen; 2-pot lid; 3-pot body; 4-porous material; 5-sealing ring; 6-pot bottom; 7-switch; 8-heating base.

【detailed description】

The present invention is described in further detail below in conjunction with accompanying drawing:

Referring to Fig. 1, the present invention includes a pot body 3, a detachable pot bottom 6 installed at the bottom of the pot body 3, and a heating base 8; the pot body 3 and the detachable pot bottom 6 are threadedly matched; the pot body 3 and the pot bottom 6 A porous heat-conducting medium 4 and a sealing ring 5 are arranged between them, wherein the porous heat-conducting medium 4 fixed vertically and horizontally is used to reduce cavitation noise generated in nucleate boiling, enhance heat transfer, and shorten heating time. Absorbs harmful elements and purifies water; the body and bottom of the pot are removable for installation and removal of porous materials for easy cleaning and replacement. The porous heat-conducting medium 4 is made of carbon-based porous material or metal porous material. The cavity formed by the porous heat-conducting medium 4 and the pot body 3 and the detachable pot bottom 6 is fitted in an interference manner to secure the porous material longitudinally. The sealing ring 5 is a non-toxic and harmless high temperature resistant rubber sealing ring. The sealing ring 5 is placed on the threaded connection between the kettle body 3 and the detachable kettle bottom 6 to prevent internal liquid leakage and play a sealing role. The sealing ring 5 is connected with the porous heat-conducting medium 4 in a clearance fit manner. The sealing ring stretches laterally under pressure to act as a lateral fixation of the porous material.

As shown in Figure 1, the filter screen, pot lid, pot body, detachable pot bottom and heating base are matched in sequence, the switch is located on the side of the pot bottom, and the porous material and sealing ring are fixed between the groove of the pot body and the pot bottom. As shown in Figure 2, put the sealing ring and the porous material into the detachable pot bottom, and connect the pot bottom and the pot body tightly by threaded connection. Since the thickness of the porous material is slightly larger than the groove height of the pot body, the The fit secures the porous material tightly to the bottom of the pot. Pour a certain amount of water into the pot, close the lid and heat it.

As shown in FIG. 3 , the comprehensive value of sound absorption and noise reduction of the present invention reaches 5.3dB compared with the existing device, and the value of sound absorption and noise reduction at different times is different, up to 13.3dB. And compared with the prior art device, the present invention shortens the heating time by 7.9%.

The above content is only to illustrate the technical ideas of the present invention, and cannot limit the protection scope of the present invention. Any changes made on the basis of the technical solutions according to the technical ideas proposed in the present invention shall fall within the scope of the claims of the present invention. within the scope of protection.

Claims (8)

1. A noise reduction and purification electric kettle is characterized in that it comprises a kettle body (3), a detachable kettle bottom (6) installed on the bottom of the kettle body (3) and a heating base (8); the kettle bottom (6) It is sealed and connected with the pot body (3); a porous heat-conducting medium (4) is arranged between the pot bottom (6) and the pot body (3), and the lower surface of the porous heat-conducting medium (4) is completely connected to the heat-conducting surface of the pot bottom (6). Contact, the upper surface communicates with the inner cavity of the kettle body (3). 2. The noise reduction and purification electric kettle according to claim 1, characterized in that, the top of the kettle body (3) is provided with a kettle cover (2) and a water outlet, and a filter screen (1) is provided at the water outlet. 3. The noise reduction and purification electric kettle according to claim 1 or 2, characterized in that, the bottom of the body (3) is provided with a boss, the outer side of the boss is provided with an internal thread, and the bottom (6) of the kettle is provided with a boss. The side is provided with the external thread that matches the external thread of the boss at the bottom of the kettle body (3), and the thread connection is sealed by a sealing ring (5). 4. The noise-reducing and purifying electric kettle according to claim 3, characterized in that, the sealing ring (5) is connected to the porous heat-conducting medium (4) in a clearance fit manner. 5. The noise-reducing and purifying electric kettle according to claim 4, characterized in that the porous heat-conducting medium (4) is made of carbon-based porous material or metal porous material. 6. The noise reduction and purification electric kettle according to claim 1 or 2, characterized in that a switch (7) is arranged on the bottom (6) of the kettle. 7. The noise-reducing and purifying electric kettle according to claim 1 or 2, characterized in that the cavity formed by the porous heat-conducting medium (4), the kettle body (3) and the kettle bottom (6) fits in an interference manner . 8. The noise-reducing and purifying electric kettle according to claim 1 or 2, characterized in that a dry-boiling protector is arranged in the heating base (8), and a temperature-sensing element is arranged in the kettle body (3).