CN209235769U - Insulating pot - Google Patents

Abstract

The utility model discloses a kind of insulating pots, including bottom of the pot wall (1), substrate (9) and heating element (4), substrate is the composite panel that thermal coefficient is not more than 60W/mk, the top surface of substrate is fixedly connected on the bottom surface of bottom of the pot wall, and heating element is installed on the bottom surface of substrate.Composite panel is multilayered material sheet structure, and at least one layer in composite panel is the low thermal conductivity plate of material (91) that thermal coefficient is not more than 60W/mk.In the insulating pot of the utility model, by adding substrate between bottom of the pot wall and heating element, the substrate is the composite panel that thermal coefficient is not more than 60W/mk, it can slow down along the thermally conductive of bottom of the pot wall thickness direction, increase the lateral heat affected zone of bottom of the pot wall simultaneously, the transverse direction for being conducive to bottom of the pot wall is heated evenly, to realize the purpose for being uniformly heated up bottom of the pot wall, reaches significant noise reduction effect.

Description

Insulating pot

Technical field

The utility model belongs to household appliance technical field, and in particular, to a kind of insulating pot.

Background technique

The bottom of the pot wall of conventional insulating pot mostly uses horizontal bottom of the pot wall, and electric hot tray is installed on the bottom surface of horizontal bottom of the pot wall, directly Horizontal bottom of the pot wall is heated, and then the liquid water in heating kettle.Wherein, the heat source of electric hot tray comes from electrothermal tube, passes through electricity Heat pipe carries out horizontal bottom of the pot wall to concentrate liquid in heating and then heating kettle.

Electrothermal tube in insulating pot conducts heat to bottom of the pot wall in a manner of thermal contact conductance, and heating surface area is small, and far from electricity The heating effect in heat pipe contact region is poor, causes local heating obvious.In this way, bottom of the pot steam bubble will be caused in insulating pot work Unevenly, local steam bubble is intensive, grows up, and then brokenly bubble, generates larger noise.

Utility model content

There is provided a kind of insulating pot for above-mentioned insufficient or defect, the utility model in the prior art, can make bottom of the pot by More evenly, the phenomenon for avoiding local steam bubble intensive achievees the effect that noise reduction to heat.

To achieve the above object, the utility model provides a kind of insulating pot, including bottom of the pot wall, substrate and heating element, The substrate is composite panel, and the top surface of the substrate is fixedly connected on the bottom surface of the bottom of the pot wall, the heating element peace Bottom surface loaded on the substrate；The composite panel is multilayered material sheet structure, at least one layer in the composite panel It is not more than the low thermal conductivity plate of material of 60W/mk for thermal coefficient, the composite panel further includes that thermal coefficient is not less than The top-level metallic plate of 100W/mk, the top-level metallic plate are welded in the bottom surface of the bottom of the pot wall, and are connected to described low thermally conductive The top surface of coefficient material plate.

Preferably, the thickness of the low thermal conductivity plate of material not less than 1mm and is not more than 5mm, preferably not less than 2mm And it is not more than 4mm.

Preferably, the thickness of the top-level metallic plate not less than 0.5mm and is not more than 1mm.

Preferably, the composite panel further includes the underlying metal plate that thermal coefficient is not less than 100W/mk, the bottom Layer metal plate is welded in the bottom surface of the low thermal conductivity plate of material, and the heating element is welded in the bottom of the underlying metal plate Face.

Preferably, the thickness of the underlying metal plate not less than 1.5mm and is not more than 2.5mm.

Preferably, the area ratio of the area of the substrate and the bottom of the pot wall is not less than 1/4 and less than 1.

Preferably, the heating element is electrothermal tube, Electric radiant Heating Film, coil panel or PTC heating sheet.

Through the above technical solutions, in the insulating pot of the utility model, by increasing between bottom of the pot wall and heating element If substrate, and the substrate is the composite panel that thermal coefficient is not more than 60W/mk, makes the heat of heating element first via low The composite panel of thermal coefficient is conducted upwards to bottom of the pot wall, then is heated through bottom of the pot wall to liquid in pot, is so increased The thickness of thermal contact area is slowed down along the thermally conductive of bottom of the pot wall thickness direction, while also increasing the lateral heat affected zone of bottom of the pot wall Domain, the transverse direction for being conducive to bottom of the pot wall are heated evenly, to realize the purpose for being uniformly heated up bottom of the pot wall, can effectively avoid bottom of the pot wall On thermal contact area the intensive phenomenon of local steam bubble, reach significant noise reduction effect.

Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:

Fig. 1 is the entirety sectional view of the insulating pot of first preferred embodiment of the utility model；

Fig. 2 is installed on the bottom view when bottom surface of bottom of the pot wall for electrothermal tube in the prior art；

It is practical in the heating region of bottom of the pot wall and comparable that Fig. 3 A to Fig. 3 B illustrates electrothermal tube in the prior art Heating region after novel improved；

Fig. 4 is the part A enlarged drawing in Fig. 1；

The structural schematic diagram of the substrate of the insulating pot of Fig. 5 the second preferred embodiment according to the present utility model；

Fig. 6 is the part B enlarged drawing in Fig. 5；

The structural schematic diagram of the substrate of the insulating pot of Fig. 7 third preferred embodiment according to the present utility model；

Fig. 8 is the C portion enlarged drawing in Fig. 7.

Description of symbols:

1 bottom of the pot wall, 7 steam pipe

2 bottle body, 9 substrate

3 pot lid, 91 low thermal conductivity plate of material

4 heating element, 92 top-level metallic plate

5 shell, 93 underlying metal plate

6 handles

Specific embodiment

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually Be for direction shown in the drawings either for it is vertical, vertically or on gravity direction for each component mutual alignment Relationship description word.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

Referring to Fig.1, the utility model provides a kind of insulating pot, bottom of the pot wall 1, bottle body 2 and pot lid including constituting kettle body 3, the bottom of bottom of the pot wall 1 is equipped with the heating element 4 for heating to liquid in pot, and the outer side wall of kettle body is equipped with shell 5, the shell It is connected with handle 6 on 5, is equipped with steam pipe 7 in kettle body, in handle 6 or between kettle body and shell 5, the bottom of kettle body is equipped with temperature Device is controlled, the intracorporal steam of pot is guided to temperature controller, passed through when temperature controller detects that vapor (steam) temperature reaches preset value by steam pipe 7 Bi-metal plate deformed is to disconnect the power supply of heating element 4, or temperature sensor is equipped in kettle body, when temperature sensor detects When temperature in pot reaches preset value, the power supply of heating element 4 is disconnected by micro-chip processor.

In the insulating pot of the prior art, referring to Fig. 2, setting is for liquid in heating kettle on the bottom surface of bottom of the pot wall 1 Heating element 4 is electrothermal tube, and in the entire heating process of insulating pot, electrothermal tube is passed the heat of itself in a manner of thermal contact conductance Be directed at bottom of the pot wall 1, the thermal contact area is in a ring and area is smaller, i.e. status heating region shown in Fig. 3 A, make 1 wall of bottom of the pot by It is hot uneven, cause occur the intensive phenomenon of local steam bubble on bottom of the pot wall 1, generates loud noise.

In view of this, it is heated more evenly to make bottom of the pot wall 1, to avoid the phenomenon that local steam bubble is intensive on bottom of the pot wall 1, reach To the effect of noise reduction, referring to Fig.1 and Fig. 4 includes bottom of the pot wall 1, substrate 9 and heating unit in the insulating pot of the utility model Part 4, the substrate 9 are the composite panel that thermal coefficient is not more than 60W/m k, and the top surface of substrate 9 is fixedly connected on bottom of the pot wall 1 Bottom surface, heating element 4 is installed on the bottom surface of substrate 9.So set, the heat of heating element 4 can be made first via low thermally conductive system Several composite panels is conducted upwards to bottom of the pot wall 1, is then heated again through bottom of the pot wall 1 to the liquid water in pot, so not The thickness of heat transfer is only thickened, i.e. heat transfer distances increase, also using the low thermal conductivity of the composite panel, to slow down edge 1 thickness direction of bottom of the pot wall it is thermally conductive, furthermore also increase the lateral heat affected zone of bottom of the pot wall 1, i.e. after being improved shown in Fig. 3 B plus Thermal region, be conducive to bottom of the pot wall 1 is laterally effectively avoided pot so that realization is uniformly heated up the purpose of bottom of the pot wall 1 by thermal balance The intensive phenomenon of the local steam bubble of thermal contact area on bottom wall 1, reaches significant noise reduction effect.

Wherein, composite panel can be various types appropriate, for example, multilayer composite sheet structure or mix blending knot Structure, as long as its thermal coefficient should be not more than 60W/mk.Specifically, referring to Fig.1 and Fig. 4, composite panel are multi-layer board Structure, at least one layer in the composite panel are the low thermal conductivity plate of material 91 that thermal coefficient is not more than 60W/mk.This Outside, which may be selected 45# steel plate, 304 stainless steel plates, 430 stainless steel plates or high manganese steel sheet etc. The thermal coefficient of type is not more than the metal plate of 60W/mk.

Specifically, the thickness of low thermal conductivity plate of material 91 should be not less than 1mm and no more than 5mm.Further, low thermally conductive The thickness of coefficient material plate 91 should be not less than 2mm and be not more than 4mm, but not limited to this.It is to be appreciated that low thermal conductivity material Plate 91 is thicker, and the heat of heating element 4 is more conducive to the transverse direction along bottom of the pot wall 1 along the thermally conductive slower of 1 thickness direction of bottom of the pot wall By thermal balance, be also more conducive to noise reduction, but production cost is consequently increased.

For convenient for making composite panel of the thermal coefficient no more than 60W/mk that can more securely be fixed on the bottom of bottom of the pot wall 1 Face, referring to Fig.1 and Fig. 4, the top layer of the composite panel are the top-level metallic plate 92 that thermal coefficient is not less than 100 W/mk, this Composite panel can be easily fixed in a welding manner the bottom surface of bottom of the pot wall 1 by sample by top-level metallic plate 92.In addition, multiple The top layer of condensation material plate is the metal plate of high thermal conductivity coefficient, and thickness direction is thermally conductive fast, is had substantially no effect on from composite panel Heat transfer of the heating element 4 of lower section for bottom of the pot wall 1.Specifically, which can be thermally conductive for copper sheet or aluminium sheet etc. Coefficient is not less than the metal plate of 100W/mk.

Wherein, the top-level metallic plate 92 of composite panel, thickness should be not less than 0.5mm and be not more than 1mm, but unlimited In this.It specifically, is the bottom surface convenient for the composite panel to be fixed on to bottom of the pot wall 1 by welding, the top-level metallic As soon as 92 need layer thin plates of plate, but the requirement of the thinner manufacturing process of its thickness is higher for plate, can cause the top The cost of layer metal plate 92 is consequently increased, in addition, material needed for its thicker production of plate is also more, then top-level metallic plate 92 production cost also can be higher.

In addition, the bottom of composite panel is the underlying metal plate 93 that thermal coefficient is not less than 100W/mk, referring to Fig.1 And Fig. 4, heating element 4 easily can be fixed in a welding manner underlying metal plate 93 by the underlying metal plate 93 in this way Bottom surface.In addition, the bottom of composite panel is the metal plate of high thermal conductivity coefficient, thickness direction is thermally conductive fast, has substantially no effect on Heat transfer of the heating element 4 from 93 lower section of underlying metal plate for bottom of the pot wall 1.Wherein, which may be selected The thermal coefficients such as copper sheet or aluminium sheet are not less than the metal plate of 100W/mk.

To sum up, which can only include low thermal conductivity plate of material 91, and be connected to low thermal conductivity material The top-level metallic plate 92 of 91 top surface of plate, and the top-level metallic plate 92 is welded in the bottom surface of bottom of the pot wall 1；It can also only include low lead Hot coefficient material plate 91, and it is connected to the underlying metal plate 93 of the bottom surface of low thermal conductivity plate of material 91, and the underlying metal plate 93 bottom surface is welded with heating element；It can also include simultaneously low thermal conductivity plate of material 91, and be connected to low thermal conductivity material The top-level metallic plate 92 (bottom surface that the top-level metallic plate 92 is welded in bottom of the pot wall 1) of 91 top surface of flitch, and be connected to low thermally conductive The underlying metal plate 93 (bottom surface that heating element is welded in the underlying metal plate 93) of the bottom surface of coefficient material plate 91.

Specifically, heating element 4 can be the electrothermal tube for being set to the lower section of bottom of the pot wall 1, be also possible to be attached to bottom of the pot The Electric radiant Heating Film (i.e. infrared electrothermal film) of wall 1 can also be the coil panel or PTC heating sheet that the lower section of bottom of the pot wall 1 is arranged in.But electricity Heat pipe is usually annular in shape, and is conducted heat in a manner of thermal contact conductance, relative to the infrared heating of discoid Electric radiant Heating Film, electrothermal tube due to The reason of the characteristics of structure of itself and heat transfer type, with greater need for the underlying metal plate 93 by high thermal conductivity coefficient with the side of welding The electrothermal tube is carried out firm fixation by formula.In addition, the temperature sensor of dry combustion method is prevented to be generally disposed at the bottom of composite panel Center, electrothermal tube are annularly installed on the lower section of composite panel, since the composite panel heat of the low thermal conductivity conducts Rate is slow, causes the temperature sensor when the situation of dry combustion method occurs in insulating pot, positioned at composite panel bottom centre cannot be fast It senses fastly and whether has reached preset dry combustion method temperature value, the temperature sensor is caused to be difficult to play the purpose for preventing dry combustion method, Therefore, set the bottom of composite panel to the underlying metal plate 93 of high thermal conductivity coefficient, be conducive to heat rapidly conduct to At the temperature sensor of the bottom centre of composite panel, so that it is better played the purpose for preventing dry combustion method, improve electricity The safety coefficient of kettle.

It, need to be in bottom to be limited convenient for passing through bolt or stud for the heating element 4 for being located at composite panel bottom surface Issuing on metal plate 93 can make bolt or stud screw in fixed mounting hole, and therefore, which should have certain Thickness, the bottom that composite panel can be firmly fixed to by screwing in the mounting hole so as to the bolt or stud.But bottom gold Belonging to plate 93 can not be blocked up, it is possible to understand that ground, the underlying metal plate 93 is thicker, and production cost is higher, such underlying metal The thickness of plate 93 is preferably not less than 1.5mm and no more than 2.5mm.

Specifically, the area of the substrate 9 of the low thermal conductivity is not answered too small, otherwise influences lateral thermal diffusion effect, but Consider from the manufacturing cost of substrate 9, the area of the substrate 9 also should not be too large, therefore in the present invention, the low thermally conductive system The area of several substrates 9 and the area ratio of bottom of the pot wall 1 are preferably greater than to be equal to 1/4 and less than 1.Further, heating element 4 It is located at substrate 9 towards in the upright projection region of bottom of the pot wall 1 towards the upright projection region of bottom of the pot wall 1, i.e. the heating element 4 In in the outer profile of substrate 9, so as to increase laterally heat transfer, expands heating region, realize heating kettle bottom wall 1 more evenly.Separately Outside, referring to Fig. 1 and Fig. 4, insulating pot further includes bottle body 2, and the bottle body 2 is identical as the wall thickness of bottom of the pot wall 1.

The utility model is specifically described below with three kinds of preferred embodiments.

In the first preferred embodiment as shown in Figure 1 and Figure 4, the wall thickness of bottom of the pot wall 1 and bottle body 2 in insulating pot It is identical, substrate 9 is added between bottom of the pot wall 1 and electrothermal tube, the area of substrate 9 and the area ratio of bottom of the pot wall 1 are 3/4, and should Substrate 9 is multilayered material sheet structure, and top-level metallic plate 92 is the aluminium sheet of 0.5mm thickness, and underlying metal plate 93 is 2.5mm thick Aluminium sheet, 304 stainless steel plates as low thermal conductivity plate of material 91 are between top-level metallic plate 92 and underlying metal plate 93 Setting, and it is with a thickness of 4mm.

In second of preferred embodiment as shown in Figure 5 and Figure 6, between the bottom of the pot wall 1 and electrothermal tube of insulating pot Substrate 9 is set, and the area of substrate 9 and the area ratio of bottom of the pot wall 1 are 1/2, and the substrate 9 is multilayered material sheet structure, top Layer metal plate 92 is the copper sheet of 1mm thickness, as low thermal conductivity plate of material 91 45# steel plate its with a thickness of 2mm, and be laminated in top The bottom surface of layer metal plate 92.

In the third preferred embodiment as shown in Figure 7 and Figure 8, between the bottom of the pot wall 1 and electrothermal tube of insulating pot Substrate 9 is set, and the area of substrate 9 and the area ratio of bottom of the pot wall 1 are 1/4, and the substrate 9 is multilayered material sheet structure, bottom Layer metal plate 93 is the copper sheet of 1.5mm thickness, and the high manganese steel sheet as low thermal conductivity plate of material 91 is between bottom of the pot wall 1 and bottom gold Belong to and being arranged between plate 93Z, and it is with a thickness of 5mm.

The insulating pot of three of the above embodiment is during liquid heats in pot, by 1 He of bottom of the pot wall The composite panel that thermal coefficient is not more than 60W/mk is added between heating element 4 (electrothermal tube), can be slowed down thick along bottom of the pot wall 1 The thermally conductive of direction is spent, while also increasing the lateral heat affected zone of bottom of the pot wall 1, is conducive to bottom of the pot wall 1 and is heated evenly, can effectively keep away Exempt from the intensive phenomenon of local steam bubble on bottom of the pot wall 1, achievees the effect that significant noise reduction.

Specific embodiment 1: Fig. 1 and insulating pot structure shown in Fig. 4 are used, i.e., in the bottom of the pot wall 1 and electrothermal tube of insulating pot Between substrate 9 is set, bottom of the pot wall 1 is 304 stainless steel plates of 0.5mm thickness, and the area ratio of the area and bottom of the pot wall 1 of substrate 9 is 3/4, and the substrate 9 is multilayered material sheet structure, top-level metallic plate 92 is the aluminium sheet of 0.5mm thickness, and underlying metal plate 93 is The aluminium sheet of 2.5mm thickness, low thermal conductivity plate of material 91 are 304 stainless steel plates.

Wherein, the heating power of electrothermal tube: 1800W, water in pot: 1.7L.

Testing procedure:

1) water of peak level, is put into pot；

2), water temperature sensor is placed in the middle of the height of water level at kettle center；

3), start timing measuring by "start" button；

4) stop timing measuring when, water temperature rises to 80 DEG C in pot；

5) sound power value≤45dB noise figure, is rejected, A weighted is carried out to test noise value, takes average acoustical power conduct Decision content.

It obtains under the thickness of different low thermal conductivity plate of material 91, noise data such as lower section table when insulating pot works 1。

Table 1: the noise data table under the thickness of different low thermal conductivity plate of material 91

Thickness/mm	Maximum acoustical power/dB	Average acoustical power/dB
			1	67.8	61.1
1.5	66.2	60.3
			2	63.7	58.9
2.5	61.3	58.1
			3	57.9	54.3
3.5	56.2	50.7
			4	52.1	49.9
4.5	50.8	49.2
			5	50.5	48.5
6	49.2	47.5

Thickness direction heat is slowed down with the increase of the thickness of the low thermal conductivity plate of material 91 in substrate 9 referring to table 1 The effect of transmitting, while making laterally to be heated more evenly, so that its maximum sound power value and average sound power value be made to be in that decline becomes Gesture, i.e. low thermal conductivity plate of material 91 in substrate 9 are thicker, are more conducive to noise reduction.If but the low thermal conductivity plate of material 91 is thick It spends greatly, then the thermal efficiency is low, and material cost is consequently increased, therefore, the thickness Ying Bu little of low thermal conductivity plate of material 91 In 1mm and no more than 5mm, preferably not less than 2mm and no more than 4mm.

Comparative example 1: insulating pot structure shown in FIG. 1 is used, wherein between the bottom of the pot wall 1 and electrothermal tube of insulating pot not The substrate 9 that thermal coefficient is not more than 60W/mk is set, and other experiment parameters are consistent in embodiment 1.

Test result: maximum sound power value when obtaining insulating pot work is 71.3dB, and average sound power value is 64.5dB.

Comprehensive Correlation embodiment 1 and comparative example 1 it is found that be set up directly on the bottom surface of bottom of the pot wall 1 compared to heating element 4, The composite panel that thermal coefficient is not more than 60W/mk is added between heating element 4 and bottom of the pot wall 1, the maximum generated Sound power value is significantly less than 71.3dB, and average sound power value is again smaller than 64.5dB, therefore, bottom of the pot wall 1 and heating in insulating pot The composite panel of low thermal conductivity, the maximum acoustical power issued when insulating pot can be made to work and average sound are set between element 4 Performance number all reduces, to be finally reached the effect of optimization noise reduction.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

It is further to note that specific technical features described in the above specific embodiments, in not lance It in the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the utility model is to each No further explanation will be given for the possible combination of kind.

In addition, any combination can also be carried out between a variety of different embodiments of the utility model, as long as it is not disobeyed The thought for carrying on the back the utility model, equally should be considered as content disclosed in the utility model.

Claims (7)

1. a kind of insulating pot, the insulating pot includes bottom of the pot wall (1), substrate (9) and heating element (4), which is characterized in that described Substrate (9) is composite panel, and the top surface of the substrate (9) is fixedly connected on the bottom surface of the bottom of the pot wall (1), the heating unit Part (4) is installed on the bottom surface of the substrate (9)；Wherein, the composite panel is multilayered material sheet structure, the composite material At least one layer in plate is the low thermal conductivity plate of material (91) that thermal coefficient is not more than 60W/mk, and the composite panel is also It is not less than the top-level metallic plate (92) of 100W/mk including thermal coefficient, the top-level metallic plate (92) is welded in the bottom of the pot The bottom surface of wall (1), and it is connected to the top surface of the low thermal conductivity plate of material (91).

2. insulating pot according to claim 1, which is characterized in that the thickness of the low thermal conductivity plate of material (91) is not small In 1mm and it is not more than 5mm.

3. insulating pot according to claim 1, which is characterized in that the thickness of the top-level metallic plate (92) is not less than 0.5mm and be not more than 1mm.

4. insulating pot according to claim 1, which is characterized in that the composite panel further includes that thermal coefficient is not less than The underlying metal plate (93) of 100W/mk, the underlying metal plate (93) are connected to the low thermal conductivity plate of material (91) Bottom surface, the heating element (4) are welded in the bottom surface of the underlying metal plate (93).

5. insulating pot according to claim 4, which is characterized in that the thickness of the underlying metal plate (93) is not less than 1.5mm and be not more than 2.5mm.

6. insulating pot according to claim 1, which is characterized in that the area of the substrate (9) and the bottom of the pot wall (1) Area ratio is not less than 1/4 and less than 1.

7. insulating pot according to claim 1, which is characterized in that the heating element (4) is electrothermal tube, Electric radiant Heating Film, line Enclose disk or PTC heating sheet.