JP4397257B2 - Stove - Google Patents

Description

The present invention is a trivet for placing an object to be heated above the heating unit is provided, relates stove to enable heating the object to be pressurized thermophysical from below.

  Such a stove is usually formed so that a heated object such as a pan, a frying pan or the like can be placed over the heating unit by providing five virtues, and the heating unit can be a burner or an electric heater. For example, the heated object is heated from below.

  In order to heat the object to be heated evenly, the center of gravity of the object to be heated should be placed on the five virtues so that the center of gravity of the object to be heated is disposed immediately above the center of the heating unit. Thus, the object to be heated may be placed in a state shifted from directly above the center of the heating unit and the stove may be used. As described above, when heating is performed while the object to be heated is shifted and placed on the virtues, the object to be heated may have uneven heating or defective heating. Specifically, in the case where a pan in which soup is boiled is the object to be heated, the heating part is kept in the state where the center of gravity of the pan is placed in a state of being removed from directly above the heating part. For example, the heat from the pot heats the handle of the pot, and if the user touches it carelessly, it becomes easy to get burned, or the uneven position of the pot is concentrated and heated, causing uneven heating and spilling In the case of heating failure such as burning, or when the bias is large, there are inconveniences such as causing the pan to fall.

  Therefore, in order to avoid such inconvenience, a temperature sensor for detecting the position of the object to be heated is provided, and the temperature of the object to be heated is detected to detect the positional deviation from the heating unit. And what has stopped the heating of a heating part based on the detection information is proposed (for example, refer to patent documents 1).

JP 2002-134260 A

  However, the temperature sensor is provided around the stove, and when the object to be heated is placed shifted in one direction, the object to be heated is close to the heating unit on the opposite side to the direction of deviation. Therefore, the portion on the opposite side to the displacement direction is mainly heated, and the portion on the displacement direction side is not heated so much. That is, when the mounting position of the object to be heated is shifted close to the temperature sensor around the stove, the object to be heated is not heated so much on the temperature sensor side, and the temperature sensor is not heated. The rise cannot be detected much. In addition, when the object to be heated is shifted in a direction away from the temperature sensor, the object to be heated is mainly heated on the temperature sensor side, and therefore, between the temperature sensor and the object to be heated. A space is formed in the space, and an air flow heated by the heating unit is easily formed in the space, and the temperature sensor cannot accurately detect the temperature of the object to be heated due to the influence of the heat of the air flow. There was a case like this.

  Accordingly, an object of the present invention is to provide a stove that can accurately detect the displacement of a heated object to be heated in view of the above situation.

The feature configuration of the stove of the present invention is as follows:
The trivet for placing an object to be heated above the heating unit is provided, the enable heating the pressurized hot material from below, a plurality of weight detection section for detecting a weight applied to the trivet from the placed article to be heated And determining means for determining a deviation of the object to be heated from the five virtues based on detection information from the weight detection unit, and the plurality of weight detection units are provided around the heating unit at an equal interval. It is in a certain point.

  That is, since the weight detection unit detects the weight applied to the five virtues at a plurality of locations, the weight detection unit detects a larger weight as it is closer to the center of gravity of the object to be heated and detects a smaller weight as the object is farther away. It will be. Then, from the balance of the detection results from each of the plurality of weight detectors, the determination means can recognize the relative position of the object to be heated with respect to the five virtues, and usually the five virtues are equally arranged around the heating unit. From this, it is possible to recognize the deviation of the heated object from the heating unit. Further, since a plurality of the weight detection units are provided, it is possible to know the direction of misalignment and the degree of misalignment with high accuracy. Moreover, since it determines by a weight, it is hard to receive the influence by the heating of a heating part compared with using a temperature sensor.

  For this reason, the user of the stove can appropriately deal with, for example, correcting the shift of the object to be heated and using the stove based on the determination result of the shift.

  Moreover, it is preferable to provide the alerting | reporting part which alert | reports the shift | offset | difference of the said to-be-heated object based on the determination result of the said determination means.

  That is, the stove user can know the determination result of the determination means via the notification unit, and can know the displacement of the object to be heated with respect to the heating unit without requiring special attention. For this reason, it is possible to deal with, for example, correct the arrangement of the object to be heated directly above the heating unit.

  Moreover, it is preferable that the said determination means determines with the said to-be-heated material having shifted | deviated when the detected weight difference of these weight detection parts exceeds a predetermined threshold value.

  That is, when a plurality of weight detection parts detect different weights, the weight detection part closer to the center of gravity of the object to be heated detects a larger weight. It can be determined that the position is shifted. In addition, since the weight difference between the one detecting the largest weight and the one detecting the smallest weight among the weight detection parts is considered to be larger, the degree of positional deviation of the heated object is considered to be larger. If it is determined that the object to be heated is displaced when the detected weight difference exceeds a predetermined threshold value, it is a sufficiently large position deviation that requires countermeasures such as correcting the position of the object to be heated. Can be accurately captured. Therefore, the stove user can accurately know only the deviation of the object to be heated that needs to be dealt with.

Embodiments of a stove according to the present invention will be described below with reference to the drawings.
The gas stove of the present invention uses a Bunsen burner 11 as shown in FIGS. Such a gas stove has an external appearance as shown in FIG. 1, has a relatively simple structure, has a wide range of thermal power control from hot to cold, and is widely used in various ways for cooking. For example, the burner head 12 of the burner 11 is exposed as the heating unit 1 on the flat top plate 3, the fuel gas is ejected from the flame port 16 of the burner head 12 to form a flame, and a cover such as a pot is formed. The heated object 4 is configured to be heatable. On the top plate 3, the virtues 5 that support the object to be heated 4 are placed.

  The burner 11 is connected to a gas supply pipe 15 through a flow rate adjusting valve 13 and a gas shut-off valve 14.

  The five virtues 5 are configured such that a plurality of leg portions 51 are erected on a circular base portion 50 and the leg portions 51 are bent toward the center side of the base portion 50. On the top plate 3, the pedestal 50 of the virtues 5 is disposed on an annular virtuosity mounting portion 31 centering on the burner head 12. The virtuosity placement part 31 is provided with a weight sensor 6 so that the weight applied to the virtues 5 can be detected.

  The weight sensor 6 can be configured, for example, by providing a piezoelectric element 61 on the five virtue placement portion 31 of the top plate 3 so as to be sandwiched between the base portion 50 of the five virtues 5. A plurality of the piezoelectric elements 61 are provided at equal intervals (for example, one below each leg 51) in an annular shape with the burner head 121 as the center, on the five virtue placement part 31.

  The output from each of the piezoelectric elements 61 is input to a determination unit 71 in the control device 7, and the determination unit 71 determines the position of the center of gravity of the object to be heated 4 from the heating unit 1 based on the magnitude of each output. Judge the deviation. When the determination means 71 determines that the position is shifted, the notification unit 72 receives the determination result and notifies the shift of the article to be heated 4.

The determination of the deviation by the determination means 71 is performed as follows, for example.
1. Of the voltage output from each piezoelectric element 61, the maximum value and the minimum value are obtained.
2. An output voltage difference between the maximum value and the minimum value is obtained.
3. If the output voltage difference is larger than the threshold voltage, it is determined that the placement position of the object to be heated is shifted.
4). The direction of the shift is determined to be a direction from the piezoelectric element 61 that gives the minimum value toward the piezoelectric element 61 that gives the maximum value.
5). The magnitude of the deviation is obtained from a conversion table showing the relationship between the output voltage difference and the deviation distance.
For example, when the voltage output shown in FIG. 3A is obtained from each piezoelectric element 61, the output voltage difference between the maximum value and the minimum value is smaller than the threshold voltage. Judge that there is no. On the other hand, when the voltage output shown in FIG. 3B is obtained, in the direction of the arrow from the one piezoelectric element 61 indicating the minimum output value to the four piezoelectric elements 61 indicating the maximum output value. It is determined that a deviation has occurred.

  As the notification unit 72, for example, an alarm device or an alarm device 72a that sounds a sound of “please correct misalignment” can be employed. In addition to this, by providing a display 72b as shown in FIG. 3 on the top plate 3 and displaying the direction and size of the shift with LEDs or the like, the stove user can take corrective measures for the shift. It is also possible to provide referenceable information about what to do. Further, as the notification unit 72, a centralized management system for reporting to the service center via the Internet may be employed. In the case of FIG. 3B described above, when a deviation is determined, a number of LEDs corresponding to the magnitude of the deviation are lit on the display 72b according to the direction of the deviation, and the alarm device 72a An alarm sound indicating that the heated object 4 is displaced is generated.

  Further, when the output voltage difference is larger than the second threshold voltage, it is assumed that the placement position of the object to be heated 4 is more greatly shifted, and the flow rate adjustment valve 13 is throttled to the heating unit 1. The heating control means 73 is provided to weaken the heating power of the gas or to close the gas shut-off valve 14 and stop the heating unit 1. In addition, in the case where a plurality of burners are provided for one heating unit 1, a burner that is operated in accordance with the positional deviation of the article to be heated 4 is selected and controlled so that uniform heating can be performed. You can also.

  In addition, since the sum total of the detected weight of the said weight detection part 6 respond | corresponds to the weight of the to-be-heated object 4, the weight change of the to-be-heated object 4 can be known by the said weight detection part 6. FIG. Then, when cooking is performed by sequentially adding ingredients to the pan, the weight of the added ingredients can be referred to, and cooking assistance can be performed. Moreover, in such a case, control which changes the heating power of the heating part 1 according to the change of the said weight can also be performed.

  As the stove, in addition to the gas stove, a solid fuel stove, an electric stove, and the like are employed. Any of these stoves are assumed to be defective in heating due to boiling, but the present invention can quickly detect and handle the occurrence of defective heating.

Further, the weight detection unit 6, instead of providing five Tokuno unit 31, for example, by providing a strain sensor to the leg portion 51 of the trivet 5, configured to sense the weight applied to the leg portion 51 For example, the type and arrangement location of the weight detection unit 6 can be variously changed.

Gas stove perspective view Vertical side view of gas stove Explanatory drawing which shows an example of deviation determination of to-be-heated material

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating part 4 Object to be heated 5 Gotoku 6 Weight detection part 71 Determination means

Claims (4)

A stove that is provided with five virtues for placing the object to be heated above the heating unit, and that allows the object to be heated to be heated from below,
A plurality of weight detectors for detecting a weight applied to the five virtues from the object to be heated; set,
A stove in which the plurality of weight detection units are provided around the heating unit in an annular shape at equal intervals . The stove of Claim 1 which provided the alerting | reporting part which alert | reports the shift | offset | difference of the said to-be-heated material based on the determination result of the said determination means . The stove according to claim 1 or 2, wherein the determination unit determines that the object to be heated is displaced when a detected weight difference between the plurality of weight detection units exceeds a predetermined threshold value . The stove according to claim 3, wherein the determination unit determines a shift direction based on a position of a weight detection unit that detects a maximum detection weight among detection weights from the plurality of weight detection units .

Images