CN105534300B - A kind of three layers of vacuum thermal-insulation electric heating kettle - Google Patents

Abstract

The invention relates to a three-layer full-vacuum thermal insulation electric kettle, which comprises a cover, a kettle body, a handle, a heating plate and a water tank. The cover is snap-connected with the body of the kettle, the handle is arranged on the body of the kettle, and the heating plate is arranged on the bottom of the water tank, and it is characterized in that: the body of the kettle includes an inner tank and an outer tank, and the A vacuum layer is provided between the outer tank and the inner tank; a closed air layer is formed between the inner tank and the water tank. At the same time, the vacuum layer formed between the inner tank and the outer tank wraps the closed air layer. In this way, the vacuum layer wraps the water tank as a whole, reducing heat loss. The bottom of the cover is provided with a closed cover, and an exhaust groove is arranged in the described cover, and the air inlet of the exhaust groove communicates with the exhaust hole provided on the closed cover, and the exhaust groove The air outlet of the handle communicates with the internal temperature control switch of the handle. When the water boils and the water vapor touches the temperature control switch through the exhaust groove, the temperature control switch automatically cuts off the power supply after being induced by heat.

Description

A three-layer full vacuum insulation electric kettle

technical field

The invention relates to an electric kettle, in particular to a three-layer full vacuum insulation electric kettle.

Background technique

Existing electric kettles basically all possess the function of heat preservation, and its principle is to utilize the vacuum layer to isolate the heat transfer of the water tank. However, in the current products, the vacuum layer can only surround the side wall of the water tank, but fails to wrap the bottom of the water tank as a whole. The heat can still be emitted from the bottom of the water tank, and the heat preservation time is short.

When the hot water is boiled, in order to prevent the water from drying out and wasting power resources, the electric kettle generally has an automatic power-off function. Existing electric kettles generally use electronic temperature control with high cost. This electronic temperature control has a complex structure, and the electronic components are easily damaged under the influence of steam temperature and have a short service life.

Contents of the invention

In view of this, the present invention provides a three-layer full-vacuum heat preservation electric kettle. The vacuum layer wraps the water tank as a whole to improve the heat preservation effect, and adopts a steam temperature control structure. The steam temperature control structure is simple, low in cost, and not easily damaged by steam. ,long lasting.

The technical scheme of the present invention is as follows: a three-layer full-vacuum heat preservation electric kettle includes a cover, a body, a handle, a water tank, and a heating plate; On the body of the kettle, the heating plate is arranged at the bottom of the water bladder.

The kettle body includes an inner bladder and an outer bladder. The inner liner extends into the inner cavity of the outer liner, the upper edge of the inner liner is sealed and connected with the upper edge of the outer liner, and a sealed cavity is formed between the outer liner and the inner liner, and the sealed cavity is vacuum-treated. Form a vacuum layer.

The heating plate is installed at the bottom of the water tank. The water tank includes a tank body and an annular thin wall, and the annular thin wall is connected to the edge of the tank body.

The water tank is installed inside the inner tank, and there are bosses on the inner tank to fasten the water tank. There are at least four bosses, and the diameter of the annular thin wall is larger than that of the inner tank. diameter, the annular thin wall presses against the upper edge surface of the junction of the inner and outer bladders. A through hole for a power cord is provided on the annular thin wall, and its aperture matches the diameter of the power cord. After the power cord is connected to the heating plate, it passes through the through hole to connect with the power supply, and the power cord connects the through hole Plug tightly to form a seal. Such a structure forms a closed air layer between the inner tank and the water tank.

Simultaneously, the vacuum layer formed between the inner tank and the outer tank wraps the closed air layer, and in this way, the overall wrapping of the water tank by the vacuum layer is realized.

An exhaust groove is arranged in the cover, and the exhaust groove is composed of a first exhaust groove and a second exhaust groove, which are connected and perpendicular to each other to form an L-shape.

A sealing cover is provided at the bottom of the cover, and an exhaust hole is arranged on the sealing cover, and the exhaust hole communicates with the bottom of the second exhaust groove.

A sealing column is arranged below the second exhaust groove, and the sealing column is blocked on the exhaust hole. A pressure spring is sheathed on the sealing column, so that the sealing column can be pressed against the exhaust hole. The sealing column is composed of the top of the column, the column and the end of the column. The cross-sections of the top of the cylinder and the end of the cylinder are smaller than the cross-section of the cylinder. The top end of the column protrudes into the vent hole for positioning, and the lower end surface of the column seals the vent hole. The pressure spring is arranged between the upper end surface of the cylinder and the groove wall above the second exhaust groove, and is in a compressed state, and the tension generated by it exerts a downward pressure on the sealing cylinder, The sealing column is pressed against the exhaust hole. The specific method is: one end of the pressure spring is tightly connected to the end of the column, and abuts against the upper end surface of the column, and the other end is tightly set on the on the column above the second exhaust groove, and abut on the groove wall above the second exhaust groove. The length of the pressure spring is greater than the distance from the upper end surface of the cylinder to the groove wall above the second exhaust groove, so that the pressure spring is in a compressed state, and the tension generated by the pressure spring in the compressed state A downward pressure is applied to the sealing column, so that the sealing column is pressed against the exhaust hole.

The inside of the handle is provided with a temperature control switch and an exhaust channel, one end of the exhaust channel communicates with the temperature control switch, and the other end communicates with the outlet end of the first exhaust groove.

Further, the outlet end of the first exhaust groove is provided with a sealing sleeve to prevent steam from leaking. When the present invention works, the heating plate heats the water in the water bladder, and the heat of the water is distributed to the enclosed air layer through the surface of the inner tank, and since the vacuum layer surrounds the enclosed air layer, thus Heat loss is isolated.

When the hot water boils, a large amount of water vapor is generated in the water tank, and the pressure in the water tank increases, when the pressure acting on the sealing column is greater than the pressure acting on the sealing column by the pressure spring At this time, the sealing column is pushed away by the steam, and the water vapor enters the exhaust groove through the exhaust hole. Since the exhaust groove communicates with the exhaust channel of the handle, the water vapor passes through the exhaust The air groove enters the inside of the handle and is in contact with the temperature control switch in the handle. After the temperature control switch is induced by heat, it is disconnected from the power supply, and the electric kettle stops heating.

Description of drawings

Fig. 1 is the overall sectional view of the three-layer full-vacuum thermal insulation electric kettle;

Fig. 2 is the structural representation of water bladder;

Fig. 3 is a schematic diagram of the structure of the vacuum layer composed of the inner tank and the outer tank;

Fig. 4 is the enlarged schematic diagram of place A in Fig. 1;

In the figure: 1, water tank; 2, inner tank; 3, outer tank; 4, vacuum layer; 5, handle; 6, cover; 7, pot body; 8, heating plate; 9, sealing cover; 10, column ; 11, sealing column; 12, pressure spring; 13, exhaust hole; 14, exhaust groove; 15, sealing sleeve; 16, temperature control switch; 17, exhaust passage; ; 103, through hole; 201, boss; 301, buckle; 1401, first exhaust groove; 1402, second exhaust groove.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

A three-layer full-vacuum thermal insulation electric kettle comprises a cover 6, a kettle body 7, a handle 5, a heating plate 8, and a water tank 1.

The kettle body includes an inner bladder 2 and an outer bladder 3. The inner liner 2 extends into the inner cavity of the outer liner 3, the upper edge of the inner liner 2 is sealed and connected with the upper edge of the outer liner 3, and a sealed inner cavity is formed between the outer liner 3 and the inner liner 2, and the sealed inner liner The vacuum layer 4 is formed after the cavity is vacuum-processed.

The heating plate 8 is installed at the bottom of the water bladder 1 .

As shown in Figure 2, the water tank 1 includes a tank body 101 and an annular thin wall 102, the diameter of the annular thin wall 102 is greater than the diameter of the inner tank 2, and the annular thin wall 102 is connected to the tank body 101 upper edge.

The water tank 1 is installed in the inner tank 2, and there are four bosses 201 on the inner tank 2 to clamp the water tank 1, and the annular thin wall 102 is pressed against the inner tank 2 and the outer tank 3. Bonded top surface. The through hole 103 for the power cord is set on the annular thin wall 102, and its aperture matches the diameter of the power cord. The power cord is connected to the heating plate 8. After passing through the through hole 103, the power cord will block the through hole 103 tightly. Such a structure A closed air layer is formed between the inner tank 2 and the water bladder 1 .

Simultaneously, the vacuum layer 4 between the inner tank 2 and the outer tank 3 wraps the enclosed air layer, and in this way, an integral wrapping of the water tank by the vacuum layer 4 is realized.

The bottom of the cover 6 is provided with a sealing cover 9,

The cover 6 is provided with an exhaust groove 14, which is composed of a first exhaust groove 1401 and a second exhaust groove 1402, which are connected and perpendicular to each other to form an L shape.

An exhaust hole 13 is provided on the sealing cover 9 , and the exhaust hole 13 communicates with the bottom of the second exhaust groove 1402 .

A sealing column 11 is provided below the second exhaust groove 1402 , and the sealing column 11 blocks the exhaust hole 13 of the sealing cover 9 . The sealing column 11 is covered with a pressure spring 12,

The sealing column 11 can be pressed against the exhaust hole 13 . The sealing column 11 is composed of a column top, a column, and a column end. The cross-sections of the top of the cylinder and the end of the cylinder are smaller than the cross-section of the cylinder. The top end of the column extends into the exhaust hole 13 for positioning, and the lower end surface of the column seals the exhaust hole 13 . One end of the pressure spring 12 is tightly connected to the end of the cylinder and abuts against the upper surface of the cylinder, and the other end of the pressure spring 12 is tightly connected to the column 10 arranged above the second exhaust groove 1402 and abut against the wall of the exhaust groove. The pressure spring 12 is in a compressed state, and the generated tension presses the sealing column 11 against the exhaust hole 13 . The outlet end of the first exhaust groove 1401 is provided with a sealing sleeve 15 to prevent steam leakage.

The inside of the handle 5 is provided with a temperature control switch 16 and an exhaust channel 17 , one end of the exhaust channel 17 communicates with the temperature control switch 16 , and the other end communicates with the outlet of the first exhaust groove 1401 .

When the present invention works, the heating plate 8 heats the water in the water tank 1, and the heat of the water is dissipated to the closed air layer through the surface of the inner tank 2. Since the vacuum layer 4 surrounds the closed air layer, the heat loss is isolated. .

When the hot water boils, a large amount of water vapor is produced in the water tank 1, and the pressure in the water tank 1 increases. When the pressure is high, the sealing column 11 is pushed open by the steam, and the water vapor enters the exhaust groove 14 through the exhaust hole 13, and the water vapor contacts the temperature control switch 16 on the handle through the exhaust channel 17, and the temperature control switch 16 receives heat. After induction, disconnect from the power supply, and the electric kettle stops heating.

The above description is a preferred embodiment of the present invention, and it should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also considered Be the protection scope of the present invention.

Claims (6)

1. A three-layer full vacuum insulation electric kettle, comprising a cover, a kettle body, a handle, a water bladder, a heating plate, and a chassis, the cover is snap-connected with the body of the kettle, and the handle is arranged on the body of the kettle , the heating plate is arranged at the bottom of the water bladder, characterized in that: The pot body includes an inner container and an outer container, and a vacuum layer is provided between the outer container and the inner container; A closed air layer is formed, and the water bladder is provided with a through hole communicating with the closed air layer. The diameter of the through hole matches the diameter of the power cord. After the power cord is connected to the heating plate and passes through the through hole connected to the power supply; The water tank includes a tank body and an annular thin wall, the annular thin wall is connected to the edge of the water tank body, and the through hole is arranged on the annular thin wall; the diameter of the annular thin wall is larger than that of the inner tank The diameter of the annular thin wall is pressed against the upper surface of the junction of the inner and outer bladders; At least four bosses are arranged on the inner surface of the liner. 2. A three-layer full vacuum insulated electric kettle according to claim 1, characterized in that: the bottom of the cover is provided with a sealing cover, and the cover is provided with an exhaust groove; the exhaust The air inlet of the groove communicates with the exhaust hole provided on the sealing cover, and the air outlet of the exhaust groove communicates with the handle; A temperature control switch and an exhaust channel are arranged inside the handle, one end of the exhaust channel communicates with the temperature control switch, and the other end communicates with the exhaust groove. 3. A three-layer full vacuum insulated electric kettle according to claim 2, characterized in that: the exhaust groove is composed of a first exhaust groove and a second exhaust groove, the two are connected and perpendicular to each other to form a L type; The exhaust hole communicates with the bottom of the second exhaust groove; One end of the exhaust channel inside the handle communicates with the temperature control switch, and the other end communicates with the outlet end of the first exhaust groove. 4. A three-layer full vacuum insulated electric kettle according to claim 3, characterized in that: a sealing column is arranged below the second exhaust groove, and the sealing column is blocked on the exhaust hole. 5. A three-layer full vacuum insulation electric kettle according to claim 4, characterized in that: the sealing column is composed of the top of the column, the column, and the end of the column; the cross-section of the top of the column and the end of the column Smaller than the cross-section of the column; the top of the column extends into the vent hole to play a positioning role, and the lower end surface of the column seals the vent hole. 6 . The three-layer full vacuum insulated electric kettle according to claim 4 , characterized in that: the sealing column is covered with a pressure spring, so that the sealing column can be pressed tightly on the exhaust hole. 7 .