JPS5956621A - Heating cooker - Google Patents

Abstract

PURPOSE:To dissolve the influence of a heat flow for a temperature sensor and improve the response ability of a temperature control by a method wherein a heat shielding cylinder is detachably attached on a sensor supporting column in freely movable up and down manner, when a vessel being heated is fixedly put on the heat shielding cylinder, an air vent opening is formed between the heat shielding and cylinder said vessel. CONSTITUTION:A temperature sensor 4 is arranged at the center of a burner 3, and a sensor supporting column 10 is inserted into a sensor receptacle 12 which is detachably attached to a burner supporter 11. A heat shielding cylinder 5 is fitted on the sensor supporting column 10 in freely movable up and down manner, said supporting column is held upward by the elastic supporting with a supporting column spring 13, and regulated the range of up and down moving thereof with a catch 14 and a removing stopper 15. The heat shielding cylinder 5 is provided with an opening 16 at a bottom part, a secondary air supply opening 17 at a lower part and an air vent opening 18 at an upper part. The air vent opening 18 is formed narrower within the extent that a sensor head 19 does not receive the radiant heat from a flame 32 of the burner 3 at the heating of the vessel 29 to be heated by the burner 3, and said opening 18 is arranged at the upper part. The secondary air supply opening 17 is made larger than the air vent opening 18 due to the necessity of the secondary air for the inner side 32b of the flame 32.

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Application The present invention provides a cooking heater such as a gas stove or an electric stove with a 1411 device on the temperature side, and the temperature side device includes a temperature sensor for detecting the temperature of the outer bottom surface of the heating container. and an electric circuit,
The present invention relates to the configuration of a heat shield cylinder surrounding the temperature sensor in order to improve the thermal responsiveness of the temperature sensor.

Conventional structure and its problems In a cooking heater, the temperature of the food to be heated in the heating container rises to - as cooking progresses, and the temperature at the bottom of the container rises in correlation with this, which is detected. There are already gas or electric rice cookers, deep fryers, etc. that are equipped with a means to control germs during heating.

Similarly, if gas or electric stoves are equipped with a temperature side panel 1 to automatically adjust the heating, it would be convenient and useful as it would require frequent handling, but the responsiveness of temperature control is not good and it is difficult to put it to practical use. is the current situation.

Gas and electric rice cookers and deep fryers are specialized appliances designed for specific purposes, and the heating containers are also fixed.

Therefore, the heat flow path between the inside of the container and the heat-sensitive part is simple, there are few disturbance factors, and the temperatures of the two are relatively well correlated. However, if we take a gas stove as an example, the thickness, shape, and material ratio of the heating container vary when used, and the content of cooking also varies, such as warming, boiling, simmering, frying, and stir-frying. A complex temperature program is created by the combination of heating, extinguishing, 1 high heat and 9 low heat.
In addition to the heat flow between i+ and 7 and iiA degrees, the heat flow from disturbance factors affects the response of the temperature side id'll. The biggest disturbance factors are the radiant heat transfer and convection heat transfer of the gas flame that affect the temperature sensor.
61Cleanness -1 It is radiant heat transfer from a gas burner. This disturbance factor try: 71. The same applies to the case of 'l'j+f radiation and hot air flow from the heater of the stove.

According to the characteristics of the invention, the present invention provides a heat shield cylinder surrounding the temperature sensor,
The purpose is to keep the gap between the heat shield cylinder and the heating container constant at all times to stabilize the influence of heat flow on the temperature sensor and to stabilize disturbance factors.

Structure of the Invention Therefore, specifically, an air flow amount ['1 part] is provided in the L portion of the heat shield tube so that the temperature sensor and the heat shield tube are cooled with air. In addition, in order to supply sufficient primary air to the gas burner, a secondary air supply volume of "1 part" should be provided at the bottom of the heat shield cylinder at a position 1 part above the burner, and the area ratio with the ventilation volume part should be 2. The next air supply amount LJ is made larger. Furthermore, the heat shield cylinder is configured to move freely below the support column of the temperature sensor, and is configured to prevent heat conduction from the burner by preventing contact between the burner and the heat shield cylinder. More-1
Due to its various configurations, automatic r! It is possible to adjust the M degree.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Fig. 1 u20 gasco/port 1 left core r+ part 2
A temperature sensor 4 and a heat shield cylinder 5 are provided in the center of the burner 3, and
is the trivet, 7 is the plate, 8 is the left burner cock knob, and 9 is the left burner cock knob.
is the temperature control scale.

Figure 2 is a sectional view of the left side/bottom part 2 of the stove 1, showing the relationship among the burner 3, temperature sensor 4, heat shield tube 5, and trivet 6. The temperature sensor 4 is located at the medium heat of the burner 3, and the sensor support 1Q, which is a part of the temperature sensor 4, is mounted on the burner receiver 11, which is a 1-1 type sensor receiver 12 with square holes at the top and bottom. 1-1 in the column 10.
iiJ The heat shield cylinder 6 inserted freely is elastically supported by the L sword by the supports 11 and 13, and its range of movement is restricted by the sealing metal 14 and the cutouts 11-15. In addition, the heat shield cylinder 5 has a barley 3L between the bottom part 1]
1 to secondary air supply amount I] part 17 and 1-2 part to ventilation amount 1
31 airflow with 0S++1S - 1 part 18&;
l: A portion of the heat shield cylinder 5 is located so that the radiant heat of the flame 32 does not reach the sensor head 19.

+7N+' is applied to the sensor head 19, the sensor head 19, the sensor head 19, which brings the sensor nod 19 into elastic contact with the detected object. 1”F of sensor head 19
' There is a guide tube 22 that regulates the movement of the kite, and the head claw 2 of the no head 19 is inserted into the vertical hole 23 of the kite tube 22.
4 is bent and pushed in. Further, both the sensor head 19 and the guide tube 22 are spot welded to the sensor column 10. 25 is a thermistor, and there is a wire connected to the sensor/throat 19. Reference numeral 26 denotes a heat insulating surface where the thermistor lead wire 27 and the No. 7 nollie lead wire 28 are connected. In addition, the heat shield cylinder 5 and sensor head 19 described in 1. Spring, 9 cylinders 21' + guide cylinder 22. Sensor post 1
Each month'i:1 of 0 is made of stainless steel 3 in consideration of heat conduction and rust prevention.Furthermore, a sensor lead wire 28 is connected to an electric circuit, but is not shown.

When there is no object to be heated, the temperature sensor 4 always has its seven-hole nozzle 19 protruding from the heat shield tube 6 by the dimension A. Further, the heat shield cylinder 5 projects from the upper surface of the trivet 6 by a BτJ-direction.

FIG. 3 is a partial front view of the heating container 29 placed on the left side/mouth 2 during cooking, and the sensor head 1 is placed on the heating container 29.
9 are pressed together and pushed down together with the heat shield cylinder 6 to the height of the trivet 6.

The above is the configuration of the embodiment of the present invention. Next, we will discuss the effect.

As shown in Fig. 2, the sensor head 19 and the heat shield cylinder 6 protrude upward from the trivet 6, so when the heating container 29 is placed on the trivet 6 as shown in Fig. 3, it becomes the heating container first. the law of nature(
Bottom center 30 (tJ, SE/SU~\) Since it is in close contact with I 19, compress the head spring 20, which has weaker elasticity than the pillar splinog 13, and compress the A dimension. Contact with one end 31 of heat cylinder 5 and push heat shield cylinder 5 1
~l also compresses the support spring 13 (7, μ
(The C heating section 5 descends the sensor column 10 and the final heat shield cylinder 6
is B, "Method 1: θ [1] heating container 29 shown in Figure 3.
is listed on j1 virtue 6.

Next, if you separately ignite the burner 3 and set it to the temperature adjustment scale 9 suitable for heating, the flame 32 will be heated to the heating container 2.
Heat 9 directly. The primary air outside 32a of the flame 32 also enters through the gap 33 between the receiver 7 and the burner 3;
The secondary air inside 32b of 2 is supplied from the secondary air supply amount 11 part 17 through the bottom part 11 part 16 of the heat shield cylinders,
It acts as a stand to keep the flame burning stably. On the other hand, in the humidity sensor 4, the sensor throat 19id, the outer bottom center 3 of the heating container 29
The head side wall 19 & of the hinge head 19, the guide π 122, the sensor column 10, etc. d, there is a heat shield tube 5 to prevent flame radiation, and the thermistor 25 + 7) response is to be cooled by air. The function is to make the temperature more approximate to the temperature at the center of the outer bottom surface. When the total heat shield cylinder 6 is located at a lower position than the trivet 6, the trivet has an inclination K, so the gap between it and the center 30 of the outer bottom surface of the heating container 29 becomes small depending on the size, and the heat of the flame described above becomes smaller. Convection enters through the gap inconsistently, and when the gap is wide, the response temperature of the thermistor 25 is higher than when it is narrow because the heat convection of the flame enters easily.

Therefore, the response temperature of the thermistor 25 varies depending on the type, size, bottom shape, etc. of the heating container 29. If the gap is set to zero, the heating container 29 will not be heated only outside the diameter of the heat shield cylinder 5, and the center 30 of the outer bottom surface will be lower than the outer bottom surface 30a of the outer periphery, which will contribute to uneven temperature of the food and prevent long-term heating. If this continues, the radiant heat from the heat shield cylinder 6 will accumulate in the throat 19 of the sensor, and the temperature of the thermistor 26 will gradually increase, and the response temperature will also decrease to 1.
．． There are disadvantages that come with it.

Therefore, the outer bottom 1ffr center 30 of the heat shield cylinder 6 and the heating container 29 is
The ventilation volume L1 part 18 that creates an air flow while cooling the temperature sensor 4 by keeping the gap between the temperature sensor 4 and the temperature sensor 4 constant is necessary, and its f to Z darkness is 10 parts of the steam cylinder 6. 1, and the amount of secondary air supplied from each space of the inner side 32b secondary air to the flame 32 j<II 17
There is a gap between each section that makes the force of the air flow larger than the 1-11 part 18.

The tenth opening 1. -11'+1 (18 must be narrow enough that the nodule 19 does not receive the 1ljl, j shot from the flame 32 to the sensor, or 1 to lγ).

Z combustion 9: 1F: Burner 3 inside becomes high temperature, so heat scolding cylinder 6
-11 Even on the river surface, the gap should be wide enough so that it does not come in contact with the burner 3, and the height of the heat shield cylinder 6 should be set to 1 (1), 1 (1), JC. In terms of other characteristics, the heat shield cylinder 6, each part of the A-generation cell/receiver 4, and the receptacle 1o have low thermal conductivity and are made of stealth metal in consideration of rust prevention. (7) The wall thickness is also thin depending on the function.

The effects of the invention are as follows: ``Heating control having a temperature sensor with a heat shield tube of the present invention''! T! According to gK, a heat shield tube that prevents radiant heat from flames and heaters is placed on the sensor column, which is cooled by cold convection air, to avoid conduction heat from high-temperature parts such as burners and heaters. Since the I-seat heating cylinder has a ventilation opening in the main part, air flows to the sensor while cooling it, and it does not receive flame radiant heat, so the response temperature of the thermistor is the same as that of the outside bottom of the heating container. It has the effect of approximating fire temperature.

Furthermore, in the case of I, U, and ffl, the heat shield cylinder has a secondary air supply amount of I'' part to the gas burner, which has the effect of stabilizing the flame, and is large in consideration of the balance with the ventilation amount of 1'' part. The ratio is as follows. Historically, the heat shield tube is higher than the trivet and the temperature sensor protrudes higher than the heat shield tube, so even if the bottom is slightly recessed in the UIL heat capacity 2, the top surface of the heat shield tube is always in contact with the temperature sensor. , therefore, the ventilation amount 1-. Satisfied with the work of part 1,
The temperature sensor is also in close contact with the bottom of the heating container () to improve temperature response. This has the effect of absorbing not only the size of the heating container but also the size of the device manufacturing.

Each of the following effects is achieved by making the automatic temperature control type of the gas stove or the electric tip of the Zuhik 0'' possible, resulting in a safety, energy-saving, and convenient electric cane.

[Brief explanation of the drawing]

Fig. 1 17J An example of non-invention Mq A TV' 77 The state of Kozu Abe Tsukuda] r (Fig. 1. tube, 6
・・Trivet (capacity 2g, 1 part), 10 stools, Senza support,
17.Air supply unit, 18...1 mountain air opening]-1 part. Name of representative: Kasoku-17 Satoshi Nakao 53 1 person Figure 1

Claims (2)

[Claims] (1) The heat shield tube is freely movable in several cases on the temperature sensor support, and when the heating container is placed on the container mounting section, the heat shield tube and the heating container are connected to each other. A heating cooker configured such that a certain ventilation opening is formed between them. (2) The upper part of the heat shield cylinder is provided with a convex part, four parts, or a small hole, etc. as a ventilation opening, and the lower part of the heat shield cylinder is provided with a separate air supply volume I part, so that the ventilation opening and the 2. The heating cooker according to claim 1, wherein the ventilation opening is configured to have a small opening degree with respect to a supply amount of 1 part.