CN217928891U - Temperature control structure for heating body - Google Patents

Abstract

The utility model discloses a accuse temperature structure for heat-generating body, including the heat-generating body, still include: the heating body is arranged on the heat insulation plate, and a through hole is formed in the heat insulation plate; the fixed support is arranged at the bottom of the heat insulation plate; the sensing end of the thermocouple penetrates through the through hole and then abuts against the heating body; the lower end of the spring abuts against the fixed support, the upper end of the spring abuts against the thermocouple, and the thermocouple is limited at the middle position between the heat insulation plate and the fixed support through the spring; and the controller is respectively electrically connected with the heating body and the thermocouple. The heating device is simple in structure, and can effectively control the temperature of the heating body during heating operation, so that the temperature control accuracy of the product is effectively improved, and the service life of the product is prolonged.

Description

Temperature control structure for heating body

Technical Field

The utility model relates to a kitchen electricity technical field especially relates to a accuse temperature structure for heat-generating body.

Background

Three gas cooking utensils (the furnace end is two big one little) to make the cooking utensils can cook several kinds of dish formulas simultaneously, but little furnace end adopts glass coating film heat-generating body to heat work, therefore, the electrically conductive connected mode of glass coating film heat-generating body has following several problems: (1) The glass film-coating heating element has high heating efficiency, high heating speed, large temperature rise, is not beneficial to cooking, is not beneficial to accurately adjusting firepower (2), and can cause temperature rush exceeding standard, thereby influencing the service life of the glass film-coating heating element.

Disclosure of Invention

The utility model discloses aim at solving one of the problems that exist among the prior correlation technique at least to a certain extent, for this reason, the utility model provides a accuse temperature structure for heat-generating body, its simple structure, the heating work that can effective heat-generating body carries out temperature control to effectively improve the precision of product accuse temperature and prolong the life of product.

The above purpose is realized by the following technical scheme:

the utility model provides a accuse temperature structure for heat-generating body, includes the heat-generating body, still includes:

the heating body is arranged on the heat insulation plate, and a through hole is formed in the heat insulation plate;

the fixing bracket is arranged at the bottom position of the heat insulation plate;

the sensing end of the thermocouple penetrates through the through hole and then abuts against the heating body;

the lower end of the spring abuts against the fixed support, the upper end of the spring abuts against the thermocouple, and the thermocouple is limited at the middle position between the heat insulation plate and the fixed support through the spring;

and the controller is respectively electrically connected with the heating body and the thermocouple.

In some embodiments, the thermocouple fixing device further comprises a positioning plate, the positioning plate is located in a middle position between the fixing bracket and the heat insulation plate, a through hole is formed in the positioning plate, and the outer side wall of the thermocouple abuts against the inner side wall of the through hole to limit the lateral movement of the thermocouple.

In some embodiments, a groove is concavely provided on the bottom wall of the heat insulation plate, and the positioning plate is arranged in the groove.

In some embodiments, a boss is convexly arranged on the outer side wall of the thermocouple, the upper end of the boss abuts against the bottom wall of the heat insulation plate, the lower end of the boss abuts against the spring, and the vertical movement of the thermocouple is limited by the combined action of the spring and the heat insulation plate.

In some embodiments, the thermocouple is connected to an external lead at an end away from the sensing end of the thermocouple, an opening is formed in the bottom wall of the fixing bracket, and the lead passes through the opening and then extends outwards.

In some embodiments, when the cross-section of the spring is circular, the diameter of the cross-section of the upper end of the spring is smaller than the diameter of the cross-section of the lower end of the spring.

In some embodiments, the thermocouple includes an NTC resistor, a ceramic case, and a teflon hose, wherein the NTC resistor is disposed within the ceramic case, the teflon hose is wrapped outside the NTC resistor, and the NTC resistor is connected to an external wire.

In some embodiments, further comprising an attachment member through which the fixing bracket is assembled with the heat insulation panel.

In some embodiments, the thermocouple includes a first thermocouple and a second thermocouple, wherein the first thermocouple is located at a middle position of the heat-generating body, the second thermocouple is located at an edge position of the heat-generating body, and the controller is electrically connected to the first thermocouple, the second thermocouple, and the heat-generating body, respectively.

Compared with the prior art, the utility model discloses an at least including following beneficial effect:

1. the utility model is used for the accuse temperature structure of heat-generating body, its simple structure, the heating work that can effective heat-generating body carries out temperature control to effectively improve the precision of product accuse temperature and prolong the life of product.

Drawings

FIG. 1 is a schematic structural view of a temperature control structure in an embodiment of the present invention;

FIG. 2 is an exploded view of the temperature control structure in the embodiment of the present invention;

FIG. 3 is a cross-sectional view of a temperature control structure in an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a thermocouple in an embodiment of the invention;

fig. 5 is a schematic flow chart of a temperature control method in an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the scope of the technical solution claimed in the present invention.

The first embodiment is as follows:

as shown in fig. 1 to 4, the present embodiment provides a temperature control structure for a heating element, which includes a heating element 1, and further includes:

the heating body 1 is arranged on the heat insulation plate 2, and a through hole is formed in the heat insulation plate 2;

the fixed bracket 3 is arranged at the bottom of the heat insulation plate 2;

the sensing end of the thermocouple 4 penetrates through the through hole and then abuts against the heating body 1;

the lower end of the spring 5 is abutted against the fixed support 3, the upper end of the spring 5 is abutted against the thermocouple 4, and the thermocouple 4 is limited at the middle position between the heat insulation plate 2 and the fixed support 3 through the spring 5;

and the controller is respectively and electrically connected with the heating body 1 and the thermocouple 4.

In this embodiment, the heating element 1 is preferably made of a glass coated heating element 1, and certainly, other more suitable heating components can be selected according to actual requirements, the heating element 1 is disposed on the thermal insulation board 2 to prevent heat generated by heating operation of the heating element 1 from radiating to the outside of the thermal insulation board 2, a through hole is formed in the bottom wall of the thermal insulation board 2, the fixing bracket 3 is disposed on the bottom wall of the thermal insulation board 2, the fixing bracket 3 is disposed corresponding to the through hole, the lower end of the spring 5 abuts against the fixing bracket 3, the upper end of the spring 5 abuts against the thermocouple 4, the thermocouple 4 is limited at the middle position between the thermal insulation board 2 and the fixing bracket 3 by the spring 5, and the sensing end of the thermocouple 4 passes through the through hole and abuts against the heating element 1 to enable the sensing end of the thermocouple 4 to detect the temperature of the heating element 1.

Further, still include locating plate 6, locating plate 6 is located the intermediate position department of fixed bolster 3 and heat insulating board 2, has seted up via hole 61 on locating plate 6, and the lateral wall butt of thermocouple 4 is injectd in the lateral shifting of thermocouple 4 in the inside wall of via hole 61.

Preferably, a groove is concavely arranged on the bottom wall of the heat insulation plate 2, and the positioning plate 6 is arranged in the groove.

Specifically, a boss 41 is convexly arranged on the outer side wall of the thermocouple 4, the upper end of the boss 41 abuts against the bottom wall of the heat insulation plate 2, the lower end of the boss 41 abuts against the spring 5, and the vertical movement of the thermocouple 4 is limited through the combined action of the spring 5 and the heat insulation plate 2.

Preferably, the thermocouple 4 is connected to an external lead at an end away from the sensing end thereof, an opening 31 is opened on the bottom wall of the fixing bracket 3, and the lead passes through the opening 31 and then extends outward.

Further, when the cross section of the spring 5 is circular, the diameter of the cross section of the upper end of the spring 5 is smaller than that of the cross section of the lower end thereof.

In this embodiment, the middle position department of 2 diapire of heat insulating board goes up the concave groove that is equipped with, locating plate 6 sets up in the recess, of course, the border position department at 2 diapires of heat insulating board does not have the recess, so locating plate 6 is then the direct mount on heat insulating board 2, it is provided with the board of bending to bend respectively on the left and right sides of fixed bolster 3, the screw component passes the board of bending in proper order, be connected with the diapire of heat insulating board 2 behind the locating plate 6 to fix the mount on heat insulating board 2 with fixed bolster 3 and locating plate 6 in proper order.

More preferably, a boss 41 is convexly arranged on the circumferential side wall of the thermocouple 4, the upper end of the boss 41 abuts on the bottom wall of the heat insulation plate 2, the lower end of the boss abuts on the spring 5, one end of the spring 5, which is far away from the thermocouple 4, abuts on the fixing frame, the vertical movement of the thermocouple 4 is limited through the combined action of the spring 5 and the heat insulation plate 2, and meanwhile, the lateral movement of the thermocouple 4 is limited due to the fact that the outer side wall of the boss 41 abuts on the inner side wall of the through hole 61, and therefore the stability of connection between the sensing end of the thermocouple 4 and the heating body 1 is guaranteed. In addition, when the cross section of the spring 5 is circular, the diameter of the cross section of the upper end of the spring 5 is smaller than that of the cross section of the lower end of the spring, so that the upper end of the spring 5 is small, and the lower end of the spring 5 is large, i.e. the spring 5 is preferably in an inverted triangle state, the thermocouple 4 is connected with an external lead at the end far away from the induction end of the thermocouple, an opening 31 is formed in the bottom wall of the fixed support 3, and the lead sequentially passes through the inner space of the spring 5 and the opening 31 and then is connected with an external power supply or a controller.

Further, the thermocouple 4 includes an NTC resistor 42, a ceramic case 43, and a teflon hose 44, wherein the NTC resistor 42 is disposed in the ceramic case 43, the teflon hose 44 is wrapped outside the NTC resistor 42, and the NTC resistor 42 is connected to an external wire.

In this embodiment, in order to ensure the accuracy of temperature control, the sensing end of the thermocouple 4 needs to directly contact the surface of the glass heating element 1 as much as possible, and considering that the heating element 1 belongs to a conductive area, therefore, the thermocouple 4 of the ceramic shell 43 is specially adopted, when in use, the sensing end of the thermocouple 4 is tightly attached to the surface of the heating element 1, the NTC resistor 42 is made of a high temperature resistant NTC material, and the NTC resistor 42 is arranged in the ceramic shell 43 and is located at one end of the ceramic shell 43 close to the heating element 1, so that the NTC resistor 42 is close to the surface of the heating element 1, and the thermocouple 4 is further beneficial to detecting the temperature of the heating element 1. In addition, because the basal body of the glass coated heating element 1 is microcrystalline glass, the temperature resistance of the glass coated heating element can be as high as 800 ℃, and therefore, the far infrared heating film is coated on the glass coated heating element 1.

Preferably, a connection member is further included, by which the fixing bracket 3 is assembled with the insulation panel 2.

Specifically, the thermocouple 4 includes a first thermocouple and a second thermocouple, wherein the first thermocouple is located at a middle position of the heating body 1, the second thermocouple is located at an edge position of the heating body 1, and the controller is electrically connected to the first thermocouple, the second thermocouple, and the heating body 1, respectively.

In the present embodiment, the first thermocouple is located at the middle position of the heating body 1 so that the first thermocouple acquires the temperature value at the center of the heating body 1, and the second thermocouple is located at the edge position of the heating body 1, that is, the second thermocouple detects the temperature at the outer edge position of the heating body 1 so as to acquire the temperature value at the outer edge position of the heating body 1, and of course, the outer edge position of the heating body 1 is also within the range of the heating area of the heating body 1.

Example two:

as shown in fig. 5, this embodiment provides a temperature control method for a heating element, including the temperature control structure as described in any one of the embodiments, in order to achieve the effects of accurate temperature control and uniform heating, and simultaneously ensure that the temperature can be reasonably controlled by temperature flushing, by obtaining a first temperature value at the center of the heating element and a second temperature value at the outer edge position of the heating element, and then comparing the first temperature value with the second temperature value with a preset heating temperature value, and controlling the heating element according to the comparison result, the temperature control is performed according to the first temperature value or the second temperature value.

The temperature control method of the heating element in the embodiment comprises the following steps:

step S101, inputting a preset heating temperature value required by cooking.

And S102, heating the heating body according to the preset heating temperature value.

In this embodiment, the first thermocouple detects the temperature at the middle position of the heating element to obtain a third temperature value, or the second thermocouple detects the temperature at the edge position of the heating element to obtain a third temperature value; and the heating body controls the temperature according to the third temperature value until the difference value between the third temperature value and the preset heating temperature value meets a preset temperature difference range value.

Preferably, the controller controls the heating temperature of the heating element when the heating element performs heating operation, and the heating element is heated gradually in an on-off time mode when the heating element starts to heat because the heating rate of the heating element is high. For example: after 2 seconds, the temperature is cut off for 2 seconds, the temperature is gradually increased, and in addition, the thermocouple can be controlled before the critical point of the temperature of the heating element is ensured. When the temperature rises to the set temperature, the on-off time proportion of the heating element is automatically adjusted through the temperature fed back by the thermocouple to maintain the stability of the temperature.

Step S103, the first thermocouple detects the temperature of the middle position of the heating element to obtain a first temperature value, and the second thermocouple detects the temperature of the edge position of the heating element to obtain a second temperature value.

And step S104, comparing the first temperature value and the second temperature value with the preset heating temperature value respectively, and controlling the heating body to perform temperature control according to the first temperature value or the second temperature value according to the comparison result.

In this embodiment, the pot is placed on the surface of the heating element, the pot absorbs heat or smolders heat, and the heat is fed back to the controller by the signal of the thermocouple.

In this embodiment, if the first temperature value is smaller than the difference between the preset heating temperature value and the preset temperature rise value, and the second temperature value is greater than the preset heating temperature, i.e. T1 is less than (T0-50K), and T2 is greater than T0, it can be determined that the bottom of the current pot is just located on the middle heating area of the heating element, so as to generate a heat absorption condition, the heating element performs temperature control according to the second temperature value, and at the same time, the heating element is controlled to automatically adjust power;

if the first temperature value is greater than the preset heating temperature value and the second temperature value is less than the difference value between the preset heating temperature value and the preset temperature rise value, namely T1 is greater than T0 and T2 is less than (T0-50K), the fact that the bottom of the current pot covers all heating areas of the heating body can be judged, and accordingly the braising condition is generated, the heating body carries out temperature control according to the first temperature value, and meanwhile, the heating body is controlled to automatically reduce power to enable the temperature to be maintained near the preset heating temperature;

if the first temperature value is smaller than the preset heating temperature value and the second temperature value is smaller than the preset heating temperature value, namely T1< T0 and T2< T0, or if the difference between the preset heating temperature value and the preset temperature rise value is smaller than the second temperature value and the second temperature value is smaller than the preset heating temperature value and the first temperature value is greater than the preset heating temperature value, namely T1> T0 and (T0-50K) < T3< T0, the heating element performs temperature control according to the first temperature value;

if the difference value between the preset heating temperature value and the preset temperature rise value is smaller than the first temperature value, the first temperature value is smaller than the preset heating temperature value, and the second temperature value is larger than the preset heating temperature value, namely T2 is greater than T0, and (T0-50K) < T1< T0, the heating body performs temperature control according to the second temperature value;

in this embodiment, T1 is a first temperature value, T2 is a second temperature value, T0 is a preset heating temperature value, and 50K is a preset temperature rise value.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims (9)

1. The utility model provides a accuse temperature structure for heat-generating body, includes heat-generating body (1), its characterized in that still includes:

the heating body (1) is arranged on the heat insulation plate (2), and a through hole is formed in the heat insulation plate (2);

the fixing support (3) is arranged at the bottom position of the heat insulation plate (2);

the sensing end of the thermocouple (4) penetrates through the through hole and then abuts against the heating body (1);

the lower end of the spring (5) abuts against the fixed support (3), the upper end of the spring (5) abuts against the thermocouple (4), and the thermocouple (4) is limited at the middle position between the heat insulation plate (2) and the fixed support (3) through the spring (5);

and the controller is respectively and electrically connected with the heating body (1) and the thermocouple (4).

2. A temperature control structure for a heating body according to claim 1, further comprising a positioning plate (6), wherein the positioning plate (6) is located at a middle position between the fixing bracket (3) and the heat insulating plate (2), a through hole (61) is opened on the positioning plate (6), and an outer side wall of the thermocouple (4) abuts against an inner side wall of the through hole (61) to limit lateral movement of the thermocouple (4).

3. A temperature controlling structure for a heating body according to claim 2, characterized in that a recess is concavely provided on the bottom wall of the heat insulating plate (2), and the positioning plate (6) is disposed in the recess.

4. A temperature controlling structure for a heating body according to claim 1, characterized in that a boss (41) is convexly provided on an outer sidewall of the thermocouple (4), an upper end of the boss (41) abuts against a bottom wall of the heat insulating plate (2), a lower end thereof abuts against the spring (5), and a vertical movement of the thermocouple (4) is limited by a cooperation of the spring (5) and the heat insulating plate (2).

5. A temperature control structure for a heating body as claimed in claim 1, wherein the thermocouple (4) is connected with an external lead at an end far away from the sensing end, an opening (31) is formed in the bottom wall of the fixing support (3), and the lead passes through the opening (31) and then extends outwards.

6. A temperature-controlling structure for a heat-generating body according to claim 1, characterized in that when said spring (5) is circular in cross section, the diameter of the cross section of the upper end of said spring (5) is smaller than the diameter of the cross section of the lower end thereof.

7. A temperature controlling structure for a heat generating body according to claim 1, wherein said thermocouple (4) comprises an NTC resistor (42), a ceramic case (43) and a teflon hose (44), wherein said NTC resistor (42) is disposed in said ceramic case (43), said teflon hose (44) is wrapped outside said NTC resistor (42), and said NTC resistor (42) is connected to an external wire.

8. A temperature controlling structure for a heat-generating body according to claim 1, further comprising a connecting member by which said fixing support (3) is assembled with said heat insulating plate (2).

9. A temperature controlling structure for a heat generating body according to any one of claims 1 to 8, wherein said thermocouple (4) comprises a first thermocouple and a second thermocouple, wherein said first thermocouple is located at a middle position of said heat generating body (1), said second thermocouple is located at an edge position of said heat generating body (1), and said controller is electrically connected to said first thermocouple, said second thermocouple, and said heat generating body (1), respectively.

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