CN109744899B - Food preparation machine that heating efficiency is high - Google Patents
Food preparation machine that heating efficiency is high Download PDFInfo
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- CN109744899B CN109744899B CN201810211684.8A CN201810211684A CN109744899B CN 109744899 B CN109744899 B CN 109744899B CN 201810211684 A CN201810211684 A CN 201810211684A CN 109744899 B CN109744899 B CN 109744899B
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Abstract
The invention provides a food processing machine with high heating efficiency, which comprises a base with a motor and a circuit board, a stirring cup connected with the base and a crushing cutter arranged in the stirring cup, wherein the stirring cup comprises a cup base matched with the upper end of the base and a cup body connected with the cup base, a heating disc is arranged at the bottom of the cup body, the heating disc comprises a heat conducting plate and an electrothermal film covered on the heat conducting plate, the electrothermal film comprises a resistance layer and an insulating layer arranged on the outer surface of the electrothermal film, the heating disc also comprises a thermal protector assembly electrically connected with the resistance layer, the thermal protector assembly comprises a thermal protector and a fixing support, the fixing support is arranged on the heat conducting plate, the thermal protector is fixed below the heating disc through the fixing support and is attached to the insulating layer, the thermal protector temperature sensing part has accurate temperature measurement, the food processing machine is ensured to execute accurate heating or boiling procedures, the safety is good, and the prepared fish soup or bone soup has good taste.
Description
Technical Field
The invention belongs to the field of food processing machines, and particularly relates to a food processing machine with a heating function.
Background
The existing food processor comprises a base with a motor and a stirring cup connected with the base, wherein a crushing cutter is arranged in the stirring cup to crush and stir materials in the cup, and the existing food processor with the heating function also comprises a heating tube or an electromagnetic heating device for heating liquid in the stirring cup for meeting the demand of making hot drinks of a user, but the heating tube usually occupies a large space, so that the whole machine occupies a large space and is inconvenient to take and place. The food processor adopting the electromagnetic heating device has the advantages of complex structure, more accessories, more production and manufacturing processes and higher cost. The heating efficiency and the heating effect on materials of the existing food processor with the heating function are also required to be improved. In addition, in a conventional food processor having a heating function, temperature measurement is delayed, and execution of a heating program is also delayed. Therefore, the temperature measurement accuracy of the heating device and the safety performance of the heating device need to be improved, and the nutrition and the taste of the heated food materials need to be improved.
Disclosure of Invention
The invention aims to provide a food processor which is accurate in temperature measurement, high in heating efficiency and safe.
In order to solve the technical problem, the invention provides a food processing machine with high heating efficiency, which comprises a machine base with a motor and a circuit board, a stirring cup connected with the machine base and a crushing cutter arranged in the stirring cup, wherein the stirring cup comprises a cup base matched with the upper end of the machine base and a cup body connected with the cup base, a heating disc is arranged at the bottom of the cup body, the heating disc comprises a heat conducting plate and an electrothermal film covered on the heat conducting plate, the electrothermal film comprises a resistance layer and an insulating layer arranged on the outer surface of the electrothermal film, the heating disc also comprises a thermal protector component electrically connected with the resistance layer, the thermal protector component comprises a thermal protector and a fixed support, the fixed support is arranged on the heat conducting plate, the thermal protector is fixed below the heating disc through the fixed support and is attached to the insulating layer, and the thermal protector comprises a temperature sensing part sensing the temperature of the resistance layer.
Furthermore, the thermal protector comprises a protective shell, the shell comprises a containing cavity with an opening at the lower end, and the temperature sensing element is located in the containing cavity and is attached to the insulating layer through the opening.
Further, the thermal protector comprises a protective shell, the shell comprises a containing cavity with an opening at the lower end, the temperature sensing element is located in the containing cavity, the outer surface of the temperature sensing element is coated with heat-conducting silicone grease, and the temperature sensing element is attached to the insulating layer through the heat-conducting silicone grease.
Furthermore, the temperature sensing piece is externally provided with an insulating sleeve, and the temperature sensing piece is attached to the insulating layer through the insulating sleeve.
Further, the shell comprises an insulating heat-resistant shell, and the fixing support and the insulating heat-resistant shell are arranged in an integrated mode or in a split mode.
Furthermore, the insulating heat-resistant shell is a ceramic shell or a plastic shell.
Furthermore, the ratio of the area of the opening to the area of the bottom surface of the shell of the thermal protector is S1, and S1 is more than or equal to 3/20 and less than or equal to 7/10.
Furthermore, the bottom of the heat-resistant insulating shell is fixedly provided with a heat conducting fin, the heat conducting fin is arranged on the periphery of the temperature sensing element, and the bonding area of the temperature sensing element and/or the heat conducting fin and the insulating layer is S2 and 20mm 2 ≤S2≤100mm 2 。
Furthermore, the number of the thermal protectors is one, and the thermal protectors are self-resetting thermal protectors or non-self-resetting thermal protectors; or the number of the thermal protectors is multiple, and the multiple thermal protectors comprise self-resetting thermal protectors and non-self-resetting thermal protectors; or the number of the thermal protectors is multiple, and the thermal protectors are all self-resetting thermal protectors or non-self-resetting thermal protectors.
Furthermore, the shell comprises a metal shell, the fixed support and the metal shell are arranged in a split mode, and the fixed support is an insulating plastic fixed support or an insulating ceramic fixed support.
The beneficial effects of the invention are:
1. the heating plate is arranged at the bottom of the cup body, the electric heating film comprises a resistance layer and an insulating layer arranged on the outer surface of the electric heating film, the insulation requirement is met, meanwhile, the temperature of the resistance layer can be quickly and accurately detected by a thermal protector assembly arranged on the electric heating film, the thermal protection action is sensitive, and the temperature measurement lag of the thermal protector caused by poor heat transfer medium is avoided. The electrothermal film layer is thin and covers occupation space on the heat conduction piece little, the heat protector passes through the fixed setting of fixed bolster on the dish that generates heat, and set up with the insulating layer laminating, the temperature sensing area that temperature sensing spare and electrothermal film correspond has been increased, and the spatial distance from the resistance layer to between the heat protector temperature sensing spare has further been dwindled, greatly reduced the calorific loss between electrothermal film and the temperature sensing spare, not only satisfy the insulation requirement, and the temperature of the direct perception resistance layer of temperature sensing spare, the temperature sensing is rapidly and accurate, food preparation machine heating or boil out procedure execution are accurate, the fish soup or the bone soup taste of making are good, nutrient composition in the thick soup releases more fully. In addition, the fixed support is fixedly arranged on the heat conducting plate, the fixed support is insulated and separated from the electric heating film, the thermal protector is not easy to damage, the thermal protector is convenient to install and fix, the assembly process of the heating plate is simplified, and the service life of the thermal protector is prolonged.
2. The thermal protector comprises a shell, the shell comprises a lower end open-ended cavity, the temperature sensing piece is located and holds the intracavity and set up through opening and insulating layer laminating, the insulating layer is the one deck film that covers at the electrothermal film surface, heat conduction efficiency is high, and temperature sensing piece and insulating layer laminating set up, also electrothermal film and temperature sensing piece are contact temperature sensing, the area of contact of temperature sensing piece and electrothermal film has not only been increased, the temperature sensing is rapider, and the temperature sensing piece passes through the insulating layer with the resistive layer insulating, it is safe and occupy small, heat loss is little, the temperature sensing is accurate.
Certainly, the temperature sensing spare surface can also set up heat conduction silicone grease, the temperature sensing spare passes through heat conduction silicone grease and insulating layer laminating setting, the temperature of resistance layer passes through the insulating layer and transmits to heat conduction silicone grease, transmit to the temperature sensing spare again by heat conduction silicone grease, because the insulating layer rete is thin, heat conduction silicone grease thermal conductivity is good, and play the guard action to the temperature sensing spare, prevent that temperature sensing spare sensitivity from reducing or warping, still play the guard action to the electric heat membrane with the setting of temperature sensing spare contact simultaneously, prevent that the temperature sensing spare from damaging electric heat membrane surface rete, thereby electric heat membrane life has been prolonged.
3. The temperature sensing piece outside can also set up insulating cover, and the temperature sensing piece passes through insulating cover and insulating layer laminating setting to the temperature of perception electric heat membrane, insulating cover not only play insulating effect, still for the protection casing of temperature sensing piece, fully keep apart the protection with temperature sensing piece and electric heat membrane, this kind of thermal protector is simpler with the fixed mode of dish that generates heat moreover, has simplified the fixed bolster structure, has reduced the cost of thermal protector subassembly.
4. The thermal protector shell comprises an insulating heat-resistant shell, specifically can be an insulating high-temperature-resistant ceramic shell or a high-temperature-resistant plastic shell, and can also ensure the insulation of the thermal protector shell and the resistance layer even if the thermal protector shell is attached to the electric heating film. When the fixed bolster and the heat-resisting shell integral type of insulation set up, because the shell is insulating to the fixed bolster also can be for insulating fixed bolster, and the equipment is simplified in the integral type setting, reduces the accessory. When the fixed bolster and the split type setting of insulating heat-resisting shell, can choose for use metal or insulating fixed bolster, the structure and the material setting of fixed bolster this moment are more various, and cost range space is more extensive, and the fixed mode of heat protector on the electric hot tray is many, is applicable to more diversified food preparation machine product, and the commonality of heat protector is stronger moreover, does benefit to food preparation machine's heater block interchangeability, more does benefit to standardized production and falls this, and the finished product qualification rate is high.
Of course, the thermal protector shell can also include metal casing, and the fixed bolster this moment need with the split type setting of metal casing, and the fixed bolster be insulating plastic or insulating ceramic fixed bolster, and the fixed bolster passes through metal casing to fix the thermal protector on the dish that generates heat to it is insulating with the heat-conducting plate to guarantee the thermal protector.
5. The area ratio of the opening to the bottom surface of the shell of the thermal protector is S1, S1 is not less than 3/20 and is not more than 7/10, the opening is an opening for accommodating the cavity at the bottom of the shell, the accommodating cavity can be arranged to effectively accommodate the temperature sensing element, the shell is not easy to deform, when S1 is less than 3/20, the attaching area of the temperature sensing element and the electrothermal film is too small, the temperature sensing is relatively lagged, and the temperature sensing is insensitive. When S1 is larger than 7/10, the size of the shell of the thermal protector is too large, which is not beneficial to miniaturization, or the thickness of the shell is too thin and the strength is insufficient under the condition that the size of the thermal protector is certain, which affects the service life of the thermal protector.
6. The heat protector shell bottom still is fixed with the conducting strip, and the conducting strip can change along with the temperature variation of electric heat membrane rapidly around the peripheral setting of temperature sensing piece to make temperature sensing piece temperature sensing more sensitive, still further increased the temperature sensing area of heat protector with the electric heat membrane simultaneously, just also make conducting strip and temperature sensing piece bigger at the projected coincident area of projection and the resistance layer at the horizontal plane of horizontal plane, heat transfer is just also rapider, and more steady efficiency is higher. When the temperature of the resistance layer changes, the information transmission of the heat change is more accurate. The bonding area of the temperature sensing element and/or the heat conducting sheet and the insulating layer is S2, 20mm 2 ≤S2≤100mm 2 The modeling of the heat protector is more diversified, and the shape of the corresponding temperature sensing element is also more diversified, so that the temperature protection requirements of different temperature ranges of the food processor are met. When S2 is less than 20mm 2 In the process, the temperature sensing area is too small, and the temperature sensing of the temperature sensing element is not accurate enough. When S2 is larger than 100mm 2 In time, the thermal protector is bulky, is not easily fixed to the heating plate, and increases the cost of the whole thermal protector assembly.
7. The number of the thermal protectors can be set to be one or more, so that multiple safety protection can be performed on the food processor. The thermal protector can be for self-resetting, and when the electrothermal film temperature reduced the default of thermal protector disconnection, thermal protector automatic re-setting made the electrothermal film switch on and continue to carry out the heating procedure that the cooking machine set for. Of course, the thermal protector may be non-self-resetting, or a combination of self-resetting and non-self-resetting thermal protectors may be used to enhance the safety control of the heating program of the food processor and the number of times the heating function of the food processor is used.
Drawings
Fig. 1 is a schematic view of a structure of a food processor according to an embodiment of the present invention.
FIG. 2 is a schematic view of a heating plate of the food processor according to an embodiment of the present invention.
Fig. 3 is an enlarged partial sectional view of fig. 2.
Fig. 4 is a partial longitudinal sectional view of fig. 2.
FIG. 5 is a schematic view of a blending cup of a food processor according to a second embodiment of the present invention.
Fig. 6 is a partial enlarged view of X in fig. 5.
FIG. 7 is a schematic view of another angle of the stirring cup of the food processor according to the second embodiment of the present invention.
Fig. 8 is a partial enlarged view of Y in fig. 7.
FIG. 9 is a schematic view of the heat-conducting plate and the electrothermal film of the food processor according to the second embodiment of the present invention.
FIG. 10 is a schematic exploded view of a stirring cup of a food processor according to a second embodiment of the present invention.
FIG. 11 is a schematic view of a connecting section of a food processor according to a second embodiment of the present invention.
Fig. 12 is a schematic view of a connection terminal of a food processor according to a second embodiment of the present invention.
Fig. 13 is a schematic view of a conduction structure of a second thermal protector according to an embodiment of the food processor of the present invention.
FIG. 14 is a schematic diagram of a second thermal protector of the food processor according to the present invention.
FIG. 15 is a schematic view of another thermal protector according to an embodiment of the food processor of the present invention.
FIG. 16 is a schematic structural view of a third thermal protector of the food processor according to the present invention.
FIG. 17 is a schematic structural view of a fourth thermal protector according to an embodiment of the food processor of the present invention.
The names of the components marked in the figures are as follows:
1. a machine base;
2. a stirring cup; 21. a cup body; 22. a cup holder; 221. a support table; 23. a heat shield; 24. a cup cover;
3. a crushing knife; 31. a crushing cutter shaft; 32. a crushing blade; 33. a coupling; 34. a bearing assembly; 341. a bearing; 342. a bearing housing; 35. a blade holder fastener; 36. a lock washer;
4. a heating plate; 41. a heat conducting plate; 411. a limiting bulge; 412. mounting holes; 413. fixing a column; 42. an electrothermal film; 421. a resistive layer; 4211. an annular heating section; 4212. a first access terminal; 4213. a second access terminal; 422. an insulating layer; 423. a thermally conductive insulating layer; 424. a connecting section; 4241. a silver wire; 43. a through hole; 44. a first seal ring; 441. a notch; 442. an annular mounting groove; 45. a second seal ring; 451. an annular groove; 46. an upper sealing surface; 47. a lower sealing surface; 48. a wiring terminal; 4811. an L-level access terminal; 4812. an N-level access terminal; 4813. an L-level wafer terminal; 4814. an N-level wafer terminal; 49. a temperature sensing probe;
5. a thermal protector; 51. a housing; 511. an upper housing; 512. a lower housing; 513. a heat conductive sheet; 52. an accommodating chamber; 521. an opening; 53. a temperature sensing member; 531. a bimetal; 532. fusing the wire; 54. heat-conducting silicone grease; 55. an insulating sleeve; 56. a first conductive end; 57. a second conductive terminal; 58. a guide post; 59. a reset lever;
6. a fixed bracket; 61. a spring arm; 62. and (6) extending the end.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples.
As shown in fig. 1 to 15, a food processor with high heating efficiency comprises a base 1 with a motor and a circuit board, a stirring cup 2 connected with the base and a crushing cutter 3 arranged in the stirring cup, wherein the stirring cup comprises a cup seat 22 matched with the upper end of the base and a cup body 21 connected with the cup seat, a cup cover 24 is covered above the cup body, the crushing cutter 3 is in transmission connection with the motor through a coupler 33, a heating disc 4 is arranged at the bottom of the cup body, the heating disc 4 comprises a heat conducting plate 41 and an electric heating film 42 covered on the heat conducting plate, a through hole 43 for the crushing cutter to pass through is arranged at the center of the heating disc, a bearing assembly 34 is arranged between the through hole and the crushing cutter 31, the electric heating film 42 comprises a resistance layer 421 and an insulation layer 422 arranged on the outer surface of the electric heating film, the heating disc 4 further comprises a thermal protector assembly electrically connected with the resistance layer 421, the thermal protector subassembly includes thermal protector 5 and fixed bolster 6, fixed bolster 6 sets up on heat-conducting plate 41, thermal protector 5 is fixed in the below of dish 4 that generates heat and is laminated with insulating layer 422 through fixed bolster 6 and set up, the thermal protector includes the perception temperature sensing piece 53 of resistance layer temperature has set up like this and has increased the temperature sensing area that temperature sensing piece 53 and electrothermal film 42 correspond, and further reduced the spatial distance from resistance layer 421 to thermal protector temperature sensing piece 53, greatly reduced the calorific loss between electrothermal film and the temperature sensing piece, not only satisfy the insulation requirement, and the temperature of the direct perception resistance layer of temperature sensing piece, the temperature sensing is rapid and accurate, food preparation machine heating or boil out procedure execution are accurate, the fish soup or bone soup taste of making are good, nutrient composition in the thick soup releases more fully. In addition, the fixing support 6 is fixedly arranged on the heat conducting plate 41, and is insulated and separated from the electrothermal film 42, the thermal protector is not easy to damage, the installation and fixation of the thermal protector are facilitated, the assembly process of the heating plate is simplified, and the service life of the thermal protector is prolonged.
The first embodiment is as follows:
as shown in fig. 1 to 4, in this embodiment, the food processing machine is a broken-wall food processor, and includes a base 1 having a motor and a circuit board, a stirring cup 2 connected to the base, and a crushing knife 3 disposed in the stirring cup, the stirring cup includes a cup seat 22 matched with the upper end of the base, and a cup body 21 connected to the cup seat, a cup cover 24 is covered above the cup body, the crushing knife 3 is connected to the motor through a coupling, a heating plate 4 is disposed at the bottom of the cup body, the heating plate 4 includes a heat conducting plate 41 and an electric heating film 42 covering the heat conducting plate, a through hole 43 for the crushing knife shaft to pass through is disposed at the center of the heating plate, a bearing assembly is disposed between the through hole and the crushing knife shaft 31, the electric heating film 42 includes a resistance layer 421 and an insulation layer 422 disposed on the outer surface of the electric heating film, the thickness of the insulation layer is T, T is not less than 0.01mm and not more than 0.02mm, in this embodiment, the thickness of the single-layer is 0.012mm, the thickness of the insulation layer is uniform, the thickness of the insulation layer is firmly attached to the resistance layer, thereby ensuring the reliable insulation of the resistance layer from the basic insulation from the outside. And the insulating layer is convenient to spray and brush, the process is simple, and the repeated steps are few. Still be equipped with heat conduction insulation layer 423 between resistance layer and the heat-conducting plate to be insulating resistance layer and heat-conducting plate, and guarantee that the heat on resistance layer can transmit the edible material to the cup in through the heat-conducting plate rapidly.
As shown in fig. 2, the heating plate 4 further includes a thermal protector assembly electrically connected to the resistance layer 421, the thermal protector assembly includes a thermal protector 5 and a fixing support 6, the fixing support 6 is disposed on the heat conducting plate 41, the thermal protector 5 is fixed below the heating plate 4 through the fixing support 6 and is attached to the insulating layer 422, and the thermal protector includes a temperature sensing element 53 for sensing the temperature of the resistance layer.
The heating plate 4 is arranged at the bottom of the cup body, as shown in fig. 3, the electric heating film 42 comprises a resistance layer 421 and an insulating layer 422 arranged on the outer surface of the electric heating film, and when the insulating requirement is met, the temperature of the resistance layer can be rapidly and accurately detected by the thermal protector assembly arranged on the electric heating film 42, the overheating protection action is sensitive, and the temperature measurement lag of the thermal protector caused by poor heat transfer medium is avoided. 42 layers of thin and cover occupation space on the heat-conducting plate of electric heat membrane little, the heat protector passes through fixed bolster 6 and fixes the setting on the dish that generates heat, and set up with the laminating of insulating layer 422, the temperature sensing area that temperature sensing piece 53 and electric heat membrane 42 correspond has been increased, and further reduced the space distance from resistance layer 421 to between the temperature sensing piece 53, greatly reduced the calorific loss between electric heat membrane and the temperature sensing piece 53, not only satisfy the insulation requirement, and the temperature of the direct perception resistance layer of temperature sensing piece 53, the temperature sensing is rapid and accurate, food preparation machine heating or boil out procedure execution accuracy, the fish soup or the bone soup taste of producing are good, nutrient composition in the thick soup releases more fully. In addition, the fixing support 6 is fixedly arranged on the heat conducting plate 41, and is insulated and separated from the electrothermal film 42, the thermal protector is not easy to damage, the installation and fixation of the thermal protector are facilitated, the assembly process of the heating plate is simplified, and the service life of the thermal protector is prolonged.
As shown in fig. 4, the thermal protector 5 includes a protective casing 51, the casing includes a containing cavity 52 with an opening at the lower end, the temperature sensing element 53 is located in the containing cavity and is attached to the insulating layer 422 through an opening 521, the insulating layer 422 is a thin film covering the outer surface of the electrothermal film, the heat conduction efficiency is high, the temperature sensing element is attached to the insulating layer, that is, the electrothermal film and the temperature sensing element are in contact type temperature sensing, which not only increases the contact area between the temperature sensing element 53 and the electrothermal film, but also enables the temperature sensing to be more rapid, and the temperature sensing element is insulated from the resistive layer through the insulating layer, so that the thermal protector is safe and small in occupied size, small in heat loss and accurate in temperature sensing.
The protection shell comprises an insulating heat-resistant shell, in this embodiment, specifically, a high-temperature-resistant plastic shell, even if the thermal protector shell 51 is attached to the electrothermal film, the insulation between the thermal protector shell and the resistance layer 421 and the insulation between the insulating heat-resistant shell and the heat-conducting plate can be ensured, so that the temperature sensing of the temperature sensing element 53 of the thermal protector is rapid and accurate, and the use is safe and reliable. Insulating heat-resisting shell includes casing 511 and casing 512 down, and the local indent of casing bottom forms down hold chamber 52, metal or insulating fixed bolster can be chooseed for use to fixed bolster 6 and the split type setting of insulating heat-resisting shell, and the structure and the material of fixed bolster set up more diversely this moment, and metal fixed bolster 6 is chooseed for use to this embodiment, and the difficult rupture of intensity is good, and is fixed more reliable to thermal protector's installation. The fixing support 6 spans the upper surface of the upper shell, two ends of the fixing support are provided with extending ends 62, and the extending ends 62 are fixedly connected with fixing columns 413 on the heat conducting plate 41 through screws. The fixed support is in a sheet shape, the elastic arm 61 is arranged in the middle of the fixed support, and the elastic arm 61 abuts against the upper surface of the upper shell 511 to assist radial locking and fixing of the thermal protector.
The ratio of the area of the opening 521 to the area of the bottom surface of the thermal protector shell is S1, S1 is more than or equal to 3/20 and less than or equal to 7/10, and in the embodiment, the area of the opening 521 is 50.24mm 2 The area of the bottom surface of the shell of the thermal protector is 288mm 2 Is thus provided withThe temperature sensing element can be better accommodated in the accommodating cavity 52, and the shell is not easy to deform. The bottom of the heat-resistant insulating shell is also fixedly provided with a metal heat-conducting fin 513, the metal heat-conducting fin 513 is embedded at the bottom of the shell and is arranged at the periphery of the temperature sensing piece 53, and the temperature sensing piece and the heat-conducting fin 513 are attached to the insulating layer in an area S2 of 20mm 2 ≤S2≤100mm 2 In this embodiment, S2 is 62mm 2 The conducting strip 513 can change rapidly along with the temperature change of the electrothermal film, so that the temperature sensing of the temperature sensing element is more sensitive, the temperature sensing area of the thermal protector and the electrothermal film 42 is further increased, the projection of the conducting strip and the temperature sensing element on the horizontal plane is larger than the superposition area of the projection of the resistance layer on the horizontal plane, the heat transfer is more rapid, and the stable efficiency is higher. When the temperature of the resistance layer changes, the information transmission of the heat change is more accurate.
It can be understood that the fixing bracket and the insulating heat-resistant shell can also be integrally arranged, so that the assembly steps are simplified, and the number of accessories is reduced.
It can be understood that the thermal protector shell can also comprise a metal shell, the fixing support needs to be arranged in a split mode with the metal shell at the moment, the fixing support is an insulating plastic or insulating ceramic fixing support, and the fixing support fixes the thermal protector on the heating plate through the metal shell, so that the thermal protector is guaranteed to be insulated from the heat conducting plate.
The heating disc can be applied to a cup body of a soybean milk machine, the cup body of the soybean milk machine is heated through the electric heating film on the heating disc, the thermal protector component on the heating disc is reliable in fixation and small in occupied space, and the temperature sensing piece of the thermal protector directly senses the temperature of the electric heating film, so that the soybean milk machine is protected from overheating, procedures such as heating and boiling of the soybean milk machine are accurate and reliable, and the soybean milk machine is safer to use.
Example two:
in the embodiment, the structure of the heating plate of the food processor is optimized and improved, so that the heating plate is higher in efficiency, and the heating plate and the base are more stably installed. Specifically, as shown in fig. 5 to 15, a supporting platform 221 for supporting the heating plate is arranged in the cup holder 22, the heating plate is clamped between the cup holder supporting platform 221 and the lower end of the cup body, the heating film is arranged at the bottom of the heat conducting plate, a heat insulation damping part is arranged between the heat conducting plate 41 and the stirring cup 2, and when the crushing knife 3 rotates at a high speed, the heating plate 4 is firmly clamped by the cup holder 22 and the cup body 21, so that resonance is not easy to occur, and the working noise of the food processor is reduced. The electric heat membrane weight that covers on the heat-conducting plate is very little, makes the whole weight of the dish that generates heat reduce, and is little to the pressure of brace table, changes the clamping, has strengthened the dish that generates heat and cup assembly wholeness, and the installation of the dish that generates heat moreover increases and need not extra locking part, does benefit to and falls the cost. The heat at the edge of the electric heating film 42 is separated from the cup body and the cup base by the heat insulation and shock absorption piece, the electric heating film occupies small space, sufficient space is reserved for the arrangement of the heat insulation and shock absorption piece, and the structure of the whole machine is more compact. As shown in fig. 5 and 6, the matching distance between the edge of the heat conducting plate 41 and the lower end of the cup body is a, a is not less than 5mm and not more than 10mm, a is 7mm in this embodiment, so as to make the area of the electric heating film 42 covering the heat conducting plate large enough, improve the heating efficiency, and make the matching surface between the heat conducting plate and the lower end of the cup body larger, the heating plate is firmly installed, the radial position deviation is not easy to occur, and the cup support platform 221 is not easily influenced by the heat radiation of the electric heating film.
The heat-insulating damping piece comprises a first sealing ring 44 arranged between the heating plate 4 and the stirring cup 2, the first sealing ring comprises an upper sealing surface 46 and a lower sealing surface 47, the upper sealing surface is abutted against the lower port of the cup body, the lower sealing surface is abutted against the upper end surface of the supporting table 221, sufficient compression amount is guaranteed to be arranged on the upper portion and the lower portion of the first sealing ring, sealing is more reliable, and the damping and noise reducing effects are better.
As shown in fig. 7 and 8, the bearing assembly 34 includes a bearing 341 and a bearing sleeve 342, the heat insulation and shock absorption member includes a second sealing ring 45 disposed between the through hole 43 and the bearing sleeve 342, an annular groove 451 is disposed on an outer side of the second sealing ring 45, and is sleeved on the through hole 43 of the heat conduction plate through the annular groove, so as to insulate and shock absorb heat from a portion of the center of the heating plate 4 close to the crushing blade 3 and the bearing assembly 34. A check washer 36 and a tool apron fastener 35 are arranged below the bearing sleeve 342, the upper sealing surface of the second sealing ring 45 is abutted against the lower end surface of the bearing sleeve 342, the lower sealing surface is abutted against the check washer 36, and triangular ribs are arranged on the upper sealing surface 46 and the lower sealing surface 47 to increase the compression amount of the second sealing ring.
As shown in fig. 9, the edge of heat-conducting plate 41 is equipped with spacing arch 411, spacing arch is provided with a plurality of and does not have the width setting just, be equipped with the recess that corresponds with spacing arch on the supporting bench 221, be equipped with on the first sealing washer 44 and dodge spacing bellied breach 441 makes first sealing washer for 4 circumference of dish that generates heat are fixed, when promoting sealed reliability, realizes preventing slow-witted installation for hot protector subassembly and the binding post that distribute on the dish that generates heat are accurate for cup 22 position, are convenient for be connected with the coupler electricity in the cup, make cup inner space distribution reasonable.
The inner side of the first sealing ring is provided with an annular mounting groove 442, and the first sealing ring is sleeved on the outer edge of the heat conducting plate 41 through the annular mounting groove on the outer side, so that the installation is convenient and the sealing ring is not easy to fall off. The annular mounting groove 442 is located between the upper sealing surface 46 and the lower sealing surface 47, and triangular ribs are arranged on the upper sealing surface 46 and the lower sealing surface 47 to increase the compression amount of the sealing ring and ensure that the upper end and the lower end of the heating plate 4 are fixed reliably.
The width of the first sealing surface 46 is not more than the wall thickness of the lower end of the cup body, the compression amount of the upper sealing surface is not more than that of the lower sealing surface, the cup seat support platform 221 has an upward supporting effect on the heating plate, and the lower end of the cup body exerts downward pressure on the heating plate, so that the weight of the heating plate and the weight of the cup body can be better borne. As shown in fig. 6, the wall thickness of the lower end of the cup body is B, B is more than or equal to 7mm and less than or equal to 10mm, and B is 8mm in the embodiment, so that the radial matching amount of the cup body 21 and the upper sealing surface is enough, the strength of the cup body is enough, and the temperature of the edge of the heat conducting plate can be resisted under the working state of the electric heating film.
As shown in fig. 7, the thermal insulation shock absorption member further comprises a thermal insulation cover 23 arranged below the heating disc, the thermal insulation cover is arranged at the bottom of the cup seat 22 and separates the heating disc 4 from the base 22, the electric heating film 42 is thin in thickness and hardly occupies space in the longitudinal direction, and the longitudinal volume of the cup seat 22 is further reduced, so that the base is guaranteed not to be thermally radiated by the electric heating film 42, the whole stirring cup is compact in structure, the working vibration of the whole stirring cup is small, and the noise is low.
The heating plate comprises a high-temperature heating area and a low-temperature heating area, the resistance layer 421 comprises a plurality of annular heating sections 4211 which are concentrically arranged, the annular heating sections 4211 can be more widely distributed on the heat conducting plate, the coverage area of the resistance layer 421 on the heat conducting plate 41 is increased, and meanwhile, the electrical connection among the annular heating sections is simpler and more reliable. The high-temperature heating area and the low-temperature heating area set up and make in the stirring cup respectively carry out asymmetric rolling with the liquid that high-temperature heating area and low-temperature heating area correspond, make liquid mix the stirring more abundant in the heating process, it is more obvious to tumble the effect, and nutrition release is more abundant, has also avoided liquid to form same direction regular motion under smashing the rotatory drive of sword high speed.
In this embodiment, the high temperature zone of heating is close to 4 outward flange circumference settings of dish that generate heat, and the low temperature zone of heating is close to 4 central circumference settings of dish that generate heat, and outlying liquid drives down the linear velocity at the high-speed rotation of smashing the sword the biggest for the liquid in the cup 21 that corresponds with 4 peripheries of dish that generates heat rolls earlier, and rolls to the center by the periphery, and the body fluid nutrition and the taste after smashing the heating are better. In this embodiment, the width of the ring-shaped heating segment 4211 near the outer edge of the heating plate is not greater than the width of the ring-shaped heating segment 4211 near the center of the heating plate, so that the cross-sectional area of the resistance layer 421 of the high-temperature heating region is smaller, the temperature difference setting of the high-temperature region and the low-temperature region is adjusted according to the width of the ring-shaped heating segment, the temperature difference can be freely adjusted according to the program requirements of different products, the adaptability is good, and the high-temperature region and the low-temperature region are reasonably arranged. Specifically, as shown in fig. 9, the width of the annular heating segment 4211 near the edge of the heating plate 4 is e, e is greater than or equal to 4.5mm and less than or equal to 6mm, e in this embodiment is 5mm, and under the rated power, the heating temperature of the high-temperature heating region is increased rapidly, and the liquid boiling effect of the cup body is more obvious.
The concentrically arranged annular heating sections 4211 are arranged from the center of the heating disc to the outer edge for 4-7 circles, 5 circles are arranged in the embodiment, the same annular heating section is arranged in an equal width mode, and the width of the 5 circles of annular heating sections from outside to inside is e, d, c, b and a in sequence. And set up 5 rings of annular heating sections and guarantee the effective heating area of resistance layer 421, make heat-conducting plate center and edge have sufficient safe insulating distance again, reserved the installation fixed position of heat-conducting plate 41 with cup stand and cup simultaneously, the dish that generates heat reasonable in design is compact, and cost and heating effect are more excellent.
As shown in fig. 12, the heat generating panel 4 includes a terminal 48 electrically connected to the resistance layer and the thermal protector. The thermal protector is fixedly arranged on the heating plate 4, monitors the temperature of the resistance layer in real time and carries out overheat protection on the electric heating film 42. The mounting positions of the wiring terminals, 48 and the thermal protector 5 on the heating plate are insulated from the resistance layer, and the resistance layer cannot be distributed, so that the positions where the wiring terminals and the thermal protector are arranged form the low-temperature heating area, and the heating plate area where the wiring terminals 48 and the thermal protector 5 are not arranged forms the high-temperature heating area, so that the high-temperature heating area and the low-temperature heating area can be flexibly arranged according to the arrangement positions of the wiring terminals 48 and the thermal protector 5.
Two adjacent annular heating segments 4211 are connected in series by a connecting segment 424, the resistivity of which is less than that of the resistive layer. The connecting section 424 is responsible for with the multistage annular section of generating heat establish ties can, and do not participate in generating heat, set up like this and can reduce the width of connecting section 424, do not occupy the distribution area of resistive layer, effectively improve the efficiency of annular section of generating heat, still make the connection between a plurality of annular section of generating heat simple reliable. Specifically, the connecting section comprises silver wires 4214, is heat-resistant and high-temperature-resistant, and the narrow-width resistance layer between the adjacent annular heating sections is short-circuited through the silver wires 4214, so that the connecting section with a small cross section only plays a role in conducting and does not play a role in heating, and the stable and reliable electric connection between the annular heating sections in the whole electric heating film is ensured.
The linkage segment is along the radial setting of heat conduction dish, and the width of linkage segment 424 is less than the width that the section was generated heat to the annular, has not only saved the space, guarantees smooth and easy and safety of electricity connection through the resistivity that reduces linkage segment 424 moreover, avoids the junction of linkage segment and the section that generates heat to generate heat simultaneously to generate heat unevenly or the high temperature, influences the stability of generating heat of whole dish that generates heat. Specifically, as shown in fig. 11, the connecting segment 424 sequentially includes a heat conducting insulating layer 423, a resistive layer 421, the silver wire 4214 and an insulating layer 422 from a position close to the heat conducting plate to a direction away from the heat conducting plate, which is equivalent to the silver wire 4214 short-circuiting the resistive layer at the position of the connecting segment, and the connecting segment is equivalent to a wire connecting a plurality of annular heating segments in series, so that the effective heating segment is fully borne by the annular heating segment of the resistive layer, the insulating of the connecting segment is safer, and the processing of the annular heating segment and the connecting segment is simpler and faster.
The effective length of the annular heating section 4211 is 800 mm-1200 mm, in the embodiment, the total effective length of the annular heating section 4211 is 896mm, so that the heating power of the food processor is matched with the distribution shape of the annular heating section, the length of the annular heating section 4211 can better ensure the corresponding area of the resistance layer and the cup body, the heating efficiency of the bottom wall of the cup body of the food processor is met, and the taste and nutrition of the prepared thick soup or beverage are better.
As shown in FIG. 9, the maximum outer diameter of the ring-shaped heating section 4211 is R, R is more than or equal to 100mm and less than or equal to 110mm, the effective heating area of the electrothermal film is S,4500mm 2 ≤S≤5500mm 2 The minimum inner diameter of the annular heating section 4211 is r, and r is more than or equal to 40mm and less than or equal to 45mm. In this embodiment, R is 104mm and R is 43mm, and correspondingly, the effective heating area S of the electrothermal film 42 is 4500mm 2 The electric heating film 42 is reasonable in area, matched with the shape of the cup body, and better matched with a program when the temperature rises in unit time, and particularly, when fish bone soup is made, nutrient substances in the bone soup are released in a temperature rise stage, and after the fish bone soup is boiled when the temperature reaches the maximum temperature, the fish bone soup is fully boiled, so that the thick soup is fine and uniform in taste.
The distance between the annular heating section at the outermost circle of the resistance layer 421 and the outer edge of the insulation layer 422 is L1, L1 is not less than 2.8mm and not more than 4mm, the minimum distance between the annular heating section at the innermost circle of the resistance layer and the insulation layer 422 at the periphery of the through hole 43 is L2, L2 is not less than 2.8mm and not more than 4mm, specifically, L1 and L2 are both 3.3mm, the insulation reliability between the resistance layer and the heat-conducting plate is ensured, and the creepage distance meets the safety regulation requirement.
The heating plate further comprises a temperature sensing probe 49, a mounting hole which is arranged to be separated from the electric heating film is formed in the heat conduction plate 41, the temperature sensing probe 49 stretches into the cup body through the mounting hole 412 to measure the temperature of the food material in the cup body, the temperature of the food material is measured in a direct mode more accurately, the electric heating film on the heating plate is a flexible film, and the distribution position of the annular heating section 4211 can be adjusted to reasonably avoid the temperature sensing probe, so that the temperature sensing probe is better in operability.
The projection of the temperature sensing element 53 in the horizontal plane and the projection of the resistance layer 421 in the horizontal plane are at least partially overlapped and attached to each other, so that the temperature of the electric heating film sensed by the temperature sensing element 53 is closest to the temperature of the resistance layer 421, and the larger the overlapped area is, the quicker the temperature of the electric heating film measured by the temperature sensing element is, the more quickly the temperature of the electric heating film is, and the more accurately the electric heating film is. The thermal load of the resistance layer is Q,25W/cm 2 ≤Q≤40W/cm 2 In this embodiment, Q is 35W/cm2, which meets the requirement of the food processor for heating or boiling the food in the cup body 21, and the temperature is easy to control, so that the operation and use of the user are safer.
In this embodiment, the number of the thermal protectors 5 is two, and the thermal protectors include a self-resetting thermal protector and a non-self-resetting thermal protector, so as to perform multiple safety protection for the food processor. When the temperature of the electric heating film is reduced to the preset value of the thermal protector 5, the self-reset thermal protector automatically resets to enable the electric heating film to be conducted to continue to execute the heating program set by the food processor. Specifically, the non-self-resetting thermal protector is a thermal protector which cannot be automatically reset and is connected in series in a circuit to enhance the safety control of a heating program of the food processor.
The self-resetting thermal protector comprises an insulating heat-resistant shell, and particularly as shown in fig. 13 and 14, the thermal protector comprises a first conducting end 56 and a second conducting end 57 which are respectively electrically connected with the resistance layer, the first conducting end 56 and the second conducting end 57 are at least partially positioned in the insulating heat-resistant shell 51, and the temperature sensing element controls the connection and disconnection of the first conducting end 56 and the second conducting end 57 according to the temperature change of the electrothermal film. Specifically, the parts of the first conducting end and the second conducting end extending out of the insulating shell are respectively electrically connected with the wiring terminals of the resistor layer, the part located in the insulating heat-resistant shell is in a conducting state under a normal state, and when the temperature of the resistor layer is higher than a preset value, the first conducting end and the second conducting end are disconnected.
Specifically, the temperature sensing element 53 of the self-resetting thermal protector comprises a bimetallic strip 531, and the bimetallic strip 531 is in contact with the electrothermal film 42 and deforms along with the temperature change of the electrothermal film. Specifically, the first conductive end 56 is a cantilever structure, an insulating guide post 58 is disposed between the first conductive end and the bimetal, and the first conductive end is linked with the bimetal 531 through the guide post. In this embodiment, the bimetal 531 is of a recoverable type, and when the temperature of the electric heating film is lower than a set value, the bimetal rebounds to conduct the circuit, so that the heating operation can be performed again.
The top of the accommodating cavity with the downward opening is provided with a through hole for the guide post 58 to pass through, the bimetallic strip is transversely arranged in the accommodating cavity 52, as shown in fig. 13, when the temperature of the electric heating film is lower than a set value, the middle part of the bimetallic strip is sunken to enable the suspended end of the first conductive end 56 to be lapped on the second conductive end 57 so as to enable the thermal protector 5 to be conducted with the resistance layer 421. As shown in fig. 14, when the temperature of the electric heating film is higher than the set value, the middle of the bimetal 531 protrudes upwards and jacks up the suspended end of the first conductive end through the guiding post 58, so that the first conductive end 56 and the second conductive end 57 are disconnected, and the food processor is protected from overheating. The accommodating cavity at the bottom of the insulating shell 51 not only provides accommodating and thermal deformation space for the bimetallic strip, but also ensures reliable linkage of the bimetallic strip and the guide post. The bimetallic strip and the electrothermal film are attached, the bimetallic strip and the resistance layer have larger overlapping area in the vertical direction, and the temperature sensing is more accurate.
The thermal protector and the wiring terminal are arranged around the through hole. Specifically, as shown in fig. 15, the resistive layer is provided with a first access end 4212 and a second access end 4213, the connection terminal includes an L-level access terminal 4811 electrically connected to the first access end and an N-level access terminal 4812 electrically connected to the second access end, the connection terminal further includes an L-level tablet terminal 4813 and an N-level tablet terminal 4814, the first access end and the L-level access terminal are connected through the L-level tablet terminal, and the second access end and the N-level access terminal are connected through the N-level tablet terminal, so as to ensure the reliability and stability of the electrical connection of the resistive layer, and simultaneously, the lead or the connection terminal of the access circuit is prevented from being affected by the high temperature of the resistive layer, so that the whole film heating circuit is safe and reliable.
In this embodiment, as shown in fig. 15, the non-self-resetting thermal protector 5 is specifically a fuse, the temperature sensing element is a fuse 532, the fuse 532 is electrically connected to the resistance layer through a wire, the fuse further includes a heat-conducting insulating housing 51, specifically a ceramic housing, disposed in contact with the electrothermal film, the fuse is disposed in the heat-conducting insulating housing, and a heat-conducting layer, specifically a heat-conducting silicone grease 54, is further disposed between the fuse and the heat-conducting insulating housing. The temperature of the electric heating film is transmitted to the fuse wire 532 through the heat-conducting insulating shell and the heat-conducting silicone grease, the fuse wire is at least partially overlapped with the resistance layer 421 in the vertical direction, so that the temperature of the resistance layer can be transmitted to the fuse wire in the shortest path and the fastest speed, the heat transmission efficiency is high, the heat loss is low, and the fuse wire 532 is fused at high temperature to perform overheat protection on the food processor. The heat conducting plate 41 is provided with a fixing column 413 insulated from the electric heating film, and in this embodiment, the fuse link is fixedly connected with the fixing column through a screw. Two thermal protectors, the wiring terminal and the temperature sensing probe are distributed around the through hole of the heat conducting plate.
It can be understood that first sealing washer includes split type last sealing member and the lower sealing member that sets up, goes up sealed face and is located the upper seal spare, and lower sealed face is located the lower sealing member, goes up the sealing member centre gripping between cup lower extreme and heat-conducting plate, and lower sealing member centre gripping is between heat-conducting plate and a supporting bench, and the sealing member only undertakes vertical ascending pressure, does not bear radial force, does not also receive the heat influence that comes from the heat-conducting plate lateral wall, and the sealing washer is difficult ageing, can also prolong the life of sealing member when guaranteeing sealed effect.
It can be understood, the surface of bimetallic strip can also set up heat conduction silicone grease, the temperature sensing piece passes through heat conduction silicone grease and insulating layer laminating setting, the temperature of resistance layer passes through the insulating layer and transmits to heat conduction silicone grease, transmit to the temperature sensing piece by heat conduction silicone grease again, because the rete of insulating layer is thin, heat conduction silicone grease thermal conductivity is good, and play the guard action to the temperature sensing piece, prevent that temperature sensing piece sensitivity from reducing or warping, still play the guard action to the electric heat membrane that sets up with the contact of temperature sensing piece simultaneously, prevent that the temperature sensing piece from damaging electric heat membrane surface rete, thereby the life of electric heat membrane has been prolonged.
It can be understood that the insulating heat-resistant shell of the self-resetting thermal protector can also be a ceramic shell, so that the heat resistance is better.
It will be appreciated that the heating plate may be provided with a self-resetting thermal protector, or may be provided with a non-self-resetting thermal protector.
It can be understood that the number of the thermal protectors is multiple, and the thermal protectors are all self-resetting thermal protectors or non-self-resetting thermal protectors.
It can be understood that the temperature sensing probe can also be directly abutted against the heat conducting plate to indirectly measure the temperature of the food material in the cup body.
It can be understood that the high-temperature heating area and the low-temperature heating area are only limited by the width change of the annular heating section of the resistance layer, and the wiring terminal and the thermal protector assembly are uniformly arranged around the through hole, so that the heating of the resistance layer is uniform in the circumferential direction, and the liquid heating area and the temperature in the cup body are more uniform.
Example three:
the present embodiment differs from the second embodiment in that the structure of the thermal protector component is different.
As shown in fig. 16, in this embodiment, the thermal protector includes two non-self-resetting thermal protectors. Specifically, the non-self-resetting thermal protector is two fuse links. The temperature sensing piece is the fuse wire, and temperature sensing piece outside is equipped with insulating cover 55, the fuse-link pass through insulating cover 55 with the insulating layer laminating sets up to perception electric heat membrane 42's temperature, insulating cover 55 not only plays insulating effect, still for the protection casing of temperature sensing piece, fully keeps apart the protection with temperature sensing piece and electric heat membrane, and this kind of thermal protector is simpler with the fixed mode of dish that generates heat moreover, has simplified fixed bolster structure, has reduced the cost of thermal protector subassembly. In this embodiment, the fuse link is fixed on the heat conducting plate through the fixing bracket 6, one end of the fixing bracket 6 includes an arc-shaped elastic arm 61, the elastic arm presses the insulating sleeve 55 downwards, the other end of the fixing bracket is provided with an extending end 62, the extending end 62 is provided with a screw hole, and a screw passes through the screw hole and is fixedly connected with a fixing column on the heat conducting plate 41, so as to fix the non-self-resetting thermal protector on the heat conducting plate.
Example four:
the present embodiment is different from the second embodiment in that the non-self-resetting thermal protector has a different structure.
In this embodiment, two thermal protectors, a self-resetting thermal protector and a non-self-resetting thermal protector are arranged on the heating plate of the food processor, and the two thermal protectors both adopt bimetallic strips as temperature sensing elements which are attached to the insulating layer on the outer surface of the electrothermal film, wherein the self-resetting thermal protector has the same structure as that of the second embodiment. Fig. 17 is a non-self-resetting thermal protector as described in this embodiment. Specifically, non-self-resetting thermal protector 5 includes protecting sheathing 51, protecting sheathing includes casing 511 and lower casing 512, and last casing 511 is the insulating casing of going up of plastic, and lower casing 512 is the casing under the metal, casing 512 cladding not only makes thermal protector intensity reliable under the metal still has the heat transfer effect moreover on the bottom surface of last casing, is equivalent to the conducting strip, and the casing sets up around the temperature sensing piece down for the temperature of the more rapid perception electric heat membrane of temperature sensing piece. The plastic upper shell 511 is provided with a containing cavity 52 at the bottom, and the temperature sensing piece 53 is a non-resettable bimetallic strip 531. The top of the accommodating cavity is provided with a through hole for a guide post 58 to pass through, the lower end of the guide post is connected with the bimetallic strip, and the upper end of the guide post is connected with the first conductive end 56.
The non-self-resetting thermal protector 5 further comprises a manual reset rod 59, a through hole is formed in the plastic upper shell, the reset rod penetrates through the through hole and protrudes out of the upper end face of the upper shell 511, and the reset rod is convenient to reset through manual operation. The reset rod 59 is a ceramic reset rod, and the guide posts 58 are ceramic guide posts. When the temperature of the electric heating film 42 exceeds the preset value, the middle part of the bimetal 531 protrudes upwards, the guide post moves upwards along with the bimetal 531 to jack up the first conductive end 56 and separate from the second conductive end 57, and the non-self-resetting thermal protector is disconnected to perform overheat protection on the food processor. The user can press down the reset rod 59, and the reset rod 59 moves downwards to make the first conductive end 56 and the second conductive end 57 conducted again, so that the non-self-resetting thermal protector is reset manually. The arrangement can provide safety guarantee for the food processor, avoids replacing accessories, is safe and reliable, and reduces the cost of replacing the heat protector. In this embodiment, the fixing bracket is a metal fixing bracket, the fixing bracket spans over the upper casing, and the metal fixing bracket does not contact with the metal lower casing 512, so as to fully ensure reliable insulation between the thermal protector and the heat conducting plate. The fixed bolster both ends have the end that stretches out, stretch out the end and pass through the fix with screw on the fixed column of heat-conducting plate.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e. all equivalent variations and modifications made by the present invention are covered by the scope of the claims of the present invention, which is not limited by the examples herein.
Claims (10)
1. The utility model provides a food preparation machine that heating efficiency is high, including the frame that has motor and circuit board, the stirring cup of being connected with the frame and set up the crushing sword in the stirring cup, the stirring cup includes the cup of being connected with frame upper end complex cup and with the cup, and the bottom of cup is equipped with the dish that generates heat, the dish that generates heat includes the heat-conducting plate and covers the electric heat membrane on the heat-conducting plate, a serial communication port, the electric heat membrane includes resistance layer and the insulating layer of setting at the electric heat membrane surface, and the dish that generates heat still includes the thermal protector subassembly of being connected with resistance layer electricity, and the thermal protector subassembly includes thermal protector and fixed bolster, and the fixed bolster setting is on the heat-conducting plate, and the thermal protector passes through the fixed bolster to fix the below of dish that generates heat to set up with the laminating of insulating layer, the thermal protector includes the perception the temperature sensing spare of resistance layer temperature, the dish that generates heat includes high temperature heating region and low temperature heating region, the high temperature heating region is close to the edge setting, the low temperature heating region is close to the center setting, the resistance layer includes annular heating region, and the width that the section that high temperature difference in temperature sets up according to the annular generates heat.
2. The food processor of claim 1, wherein the thermal protector includes a protective housing having a receiving cavity with an open lower end, the temperature sensing element being positioned in the receiving cavity and in engagement with the insulating layer through the opening.
3. The food processor of claim 1, wherein the thermal protector comprises a protective housing, the housing comprises a receiving cavity with an opening at a lower end, the temperature sensing element is located in the receiving cavity, an outer surface of the temperature sensing element is coated with heat-conductive silicone grease, and the temperature sensing element is attached to the insulating layer through the heat-conductive silicone grease.
4. The food processor of claim 1, wherein the temperature sensing element is externally provided with an insulating sleeve, and the temperature sensing element is attached to the insulating layer through the insulating sleeve.
5. The food processor of claim 2, wherein the housing comprises an insulating heat resistant housing, and the mounting bracket is integrally or separately disposed from the insulating heat resistant housing.
6. The food processor of claim 5, wherein the insulating heat resistant housing is a ceramic housing or a plastic housing.
7. A food processor as claimed in claim 2, characterized in that the ratio of the area of the opening to the area of the bottom surface of the thermal protector housing is S1, 3/20. Ltoreq.S 1. Ltoreq.7/10.
8. The food processor as claimed in claim 5, wherein a heat conducting sheet is fixedly arranged at the bottom of the heat-resistant insulating shell, the heat conducting sheet is arranged at the periphery of the temperature sensing element, and the bonding area of the temperature sensing element and/or the heat conducting sheet and the insulating layer is S2, 20mm 2 ≤S2≤100mm 2 。
9. The food processor of claim 1, wherein the number of thermal protectors is one, the thermal protectors being either self-resetting thermal protectors or non-self-resetting thermal protectors;
or the number of the thermal protectors is multiple, and the multiple thermal protectors comprise self-resetting thermal protectors and non-self-resetting thermal protectors;
or the number of the thermal protectors is multiple, and the multiple thermal protectors are all self-resetting thermal protectors or non-self-resetting thermal protectors.
10. The food processor of claim 2, wherein the housing comprises a metal housing, and the mounting bracket is disposed separately from the metal housing, and the mounting bracket is an insulating plastic mounting bracket or an insulating ceramic mounting bracket.
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| CN112043180B (en) * | 2019-12-06 | 2021-12-03 | 九阳股份有限公司 | Food processor |
| CN113133691B (en) * | 2020-01-18 | 2022-06-28 | 九阳股份有限公司 | Wall-breaking food processor and preparation method of fish soup |
| CN112137452B (en) * | 2020-05-29 | 2022-05-27 | 浙江绍兴苏泊尔生活电器有限公司 | Heating disc assembly, stirring cup assembly and food processor |
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| CN201150445Y (en) * | 2008-01-02 | 2008-11-19 | 厦门灿坤实业股份有限公司 | Fruit juice squeezer with heating function |
| CN101534581B (en) * | 2009-04-24 | 2012-04-04 | 宁波圣莱达电器股份有限公司 | Safety protection device of electrothermal film heater |
| CN203226647U (en) * | 2013-03-26 | 2013-10-09 | 九阳股份有限公司 | Rapid-soybean-milk-making machine |
| CN203327254U (en) * | 2013-07-17 | 2013-12-04 | 方文平 | Temperature-sensitive protection device for electro-thermal film heating |
| CN204049276U (en) * | 2014-07-23 | 2014-12-31 | 九阳股份有限公司 | Side heating soybean milk maker |
| CN204091759U (en) * | 2014-09-17 | 2015-01-14 | 九阳股份有限公司 | A kind of overheat protector and food processor |
| CN206100487U (en) * | 2016-10-08 | 2017-04-12 | 广东恒美电热科技股份有限公司 | Thick film heating protection device |
| CN206793882U (en) * | 2017-04-01 | 2017-12-26 | 九阳股份有限公司 | A kind of safe food processor |
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