JP2016109397A - Temperature detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temperature detection device capable of avoiding a situation where a combustion state of a cooking stove burner is deteriorated, even after a long-term use.SOLUTION: A boiling over liquid cover 123 is mounted on a holder which is formed substantially cylindrical and whose lower end side is fitted in a support pipe in a vertically movable manner. An outside surface of the boiling over liquid cover 123 has an expansion part having a shape spreading downward, and at least at one part of a path in which the boiling over liquid flows down, a groove-like shape is formed.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a temperature detection device that comes into contact with the bottom of a cooking vessel placed on the virtues of a gas stove and detects the temperature of the cooking vessel.

  2. Description of the Related Art A temperature detection device that projects from a central opening of a stove burner and detects the temperature of a cooking container that is cooked by the stove burner is widely known. This temperature detection device includes a holder with a built-in temperature sensor, a support pipe attached in such a manner that the holder can move in the vertical direction, and a coil provided between the holder and the support pipe to bias the holder upward. And a spring. In the state where the cooking container is not placed on the virtues, the holder has a state in which the upper end surface of the holder protrudes from the surface on which the cooking container is placed. For this reason, when the cooking container is placed on Gotoku, the holder is pushed down at the bottom of the cooking container, and the upper end surface of the holder comes into contact with the bottom of the cooking container. As a result, the temperature of the cooking container can be detected by the temperature sensor built in the holder.

  In addition, simmering may occur from the cooking container during cooking. If boiled juice enters the gap between the lower end of the holder and the support pipe, the holder is fixed to the support pipe, and the holder cannot move in the vertical direction. Then, even if a cooking container is placed on Gotoku, the upper end surface of the holder cannot be brought into contact with the bottom of the cooking container, and the temperature of the cooking container cannot be detected. Therefore, by attaching a conical cylindrical member that spreads downward (boiled juice cover) to the holder so as to cover the lower end portion of the holder, even if simmering occurs, the gap between the holder and the support pipe A temperature detection device has been proposed in which no boiled soup enters (Patent Document 1).

  Here, in order to prevent boiled juice from being applied to the lower end of the holder (and the supporting pipe in the vicinity thereof), it is desirable that the size (outer diameter) of the boiled juice cover is larger, but the opening of the stove burner The part serves as a supply passage for secondary air necessary for combustion. For this reason, the size of the conical simmered juice cover is such that the supply of secondary air is not hindered and the combustion state of the stove burner is not deteriorated, and the simmered juice is not applied to the lower end of the holder. Is set.

JP2013-044468A

  However, in the proposed temperature detection device, when the stove burner is used for a long time, the outer diameter of the boiled juice cover increases due to the solidified boiled juice, and the supply of secondary air There is a problem that the combustion state of the stove burner may be deteriorated by being inhibited. This is due to the following reason. First, since boiled soup has a high viscosity, when it is collected at the lower end of the boiled soup cover, it is in a state of being slightly overhanged (reserved state). Then, as a result of solidification of the boiled soup in the pooled state, the outer diameter of the boiled soup cover is slightly increased. Since this is repeated every time simmering occurs, the outer diameter of the simmering juice cover increases to the extent that the secondary air supply is hindered during long-term use. The combustion state will be worsened.

  The present invention has been made in response to the above-mentioned problems of the prior art, and an object of the present invention is to provide a temperature detection device that does not deteriorate the combustion state of the stove burner even when used for a long time.

In order to solve the above-described problems, the temperature detection device of the present invention employs the following configuration. That is,
In the temperature detection device for detecting the temperature of the cooking container placed on the virtues, the air supply passage through which the secondary air is supplied is provided in the stove burner formed through the center,
A support pipe erected in the air supply passage;
A holder that is formed in a substantially cylindrical shape and is fitted in the support pipe at the lower end side in a manner movable in the vertical direction;
A heat collecting part attached to the upper end of the holder;
A temperature sensor attached to the inside of the heat collecting unit;
A coil spring for urging the holder upward;
A boiled juice cover that is attached to the outer periphery of the holder and prevents the boiled juice from falling on the lower end of the holder by flowing down the outer surface of the boiled juice from the cooking container;
The outer surface of the boiled juice cover is characterized in that at least a part of a path through which the boiled juice flows down is formed in a groove shape.

  In such a temperature detection device of the present invention, the holder is fitted into the support pipe in such a manner that it can move in the vertical direction. A boiled soup cover for preventing the boiled soup from being applied to the lower end of the holder is attached to the outer periphery of the holder. The outer surface of the boiled soup cover is formed in a groove shape at least part of the path through which the boiled soup flows.

  In this way, the boiled soup that flows down the boiled soup cover will flow down the part formed in the groove shape on the outer surface, and after the boiled soup is reduced, the part formed in the groove shape The simmered juice starts dripping from below. As a result, the position at which the boiled juice is finally dropped at the lower end of the boiled soup cover can be limited to the position below the portion formed in the groove shape, so the position where the boiled soup solidifies is also this position. However, solidification does not occur in other portions. For this reason, even when the stove burner is used for a long period of time, the solidified boiled juice does not narrow the air supply passage except under the portion formed in the groove shape. As a result, since the supply amount of secondary air can be ensured, it is possible to avoid a situation where the combustion state of the stove burner is deteriorated.

  Moreover, in the temperature detection apparatus of this invention mentioned above, it is good also as forming a several groove-shaped part at equal intervals along the circumferential direction of a boiled juice cover.

  If it carries out like this, boiled soup can be dripped from the position of equidistant at the lower end of a boiled soup cover, and the position where boiled soup will solidify can also be produced at equal intervals. For this reason, even if solidification of the boiled juice progresses and the flow of air passing through the air supply passage is suppressed, the flow of air passing through the air supply passage is not biased. For this reason, even when the stove burner is used over a long period of time, the supply of air does not become insufficient in a part of the stove burner, and a good combustion state can be maintained.

  Moreover, in the temperature detection apparatus of this invention mentioned above, it is good also as leaving the boiled juice cover into the shape which has an extended part which spreads below, and forming at least one part of an extended part in groove shape.

  If a groove shape is provided in the extended part of the boiled juice cover in this way, the boiled juice flowing down the extended part tends to gather into the groove shape by its own weight, so even if the boiled juice decreases, the groove Boiled soup can be efficiently collected in the part formed in the shape. For this reason, it becomes possible to reliably limit the position where the boiled soup drops at the lower end of the boiled soup cover to a position below the groove shape.

It is sectional drawing which shows the structure of the gas stove 1 carrying the temperature detection apparatus 100 of a present Example. It is sectional drawing which shows the internal structure of the temperature detection part 110 of a present Example. It is explanatory drawing which shows the detailed shape of the boiled zero soup cover 123 of a present Example. In the conventional temperature detection apparatus 200, it is explanatory drawing which showed the reason that the air supply path 10a may become narrow by long-term use. In the temperature detection apparatus 100 of a present Example, it is explanatory drawing which showed the reason why the air supply path 10a does not become narrow even by long-term use. It is explanatory drawing which shows the detailed shape of the boiled zero soup cover 323 of a 1st modification. It is explanatory drawing which shows the detailed shape of the boiled zero soup cover 423 of a 2nd modification. It is explanatory drawing which showed the reason which can limit the position where boiled soup drip also drops in the boiled soup cover 423 of the 2nd modification.

  FIG. 1 is a cross-sectional view showing the structure of a gas stove 1 equipped with a temperature detection device 100 of the present embodiment. The gas stove 1 is provided by covering the top surface of the stove body (not shown) and having the burner opening 4 formed thereon, and facing the burner opening 4 to burn the fuel gas and cooking. A stove burner 10 for heating the container, Gotoku 3 in which a cooking container such as a pan is placed, a temperature detection device 100 for detecting the temperature of the cooking container in contact with the bottom of the cooking container placed on Gotoku 3 and the like ing.

  The stove burner 10 includes a burner body 11 formed in an annular shape, a mixing tube 12 extending from the burner body 11, and an annular burner head 13 placed on the upper surface of the burner body 11. ing. The burner head 13 is made of die casting such as aluminum or forging, and a plurality of grooves (flame grooves) are formed on the lower surface side of the outer peripheral portion. When the burner head 13 is placed on the burner body 11, a plurality of flame openings 13 a are formed between the plurality of flame opening grooves formed in the burner head 13 and the upper surface of the burner body 11. A burner cap 14 made of sheet metal is attached to the upper part of the burner body 11.

  When fuel gas is injected into the mixing pipe 12 from the upstream opening end 12a of the mixing pipe 12 extending from the burner body 11, a mixed gas of fuel gas and air is generated inside the mixing pipe 12, The gas is supplied to the burner body 11 and the mixed gas flows out from the flame port 13a. The combustion of the stove burner 10 can be started by igniting the mixed gas with the spark plug 15. Secondary air is required for the combustion of the mixed gas, but about half of the secondary air passes through the air supply passage 10a passing through the center of the stove burner 10 and from the gap between the burner head 13 and the burner cap 14. Supplied.

  A support pipe 130 is erected on the inner side of the air supply passage 10a, and a substantially cylindrical holder 120 is attached to an upper end of the support pipe 130 so as to be movable in the vertical direction with respect to the support pipe 130. ing. Furthermore, a temperature detection unit 110 incorporating a temperature sensor described later is attached to the upper end of the holder 120. The temperature detection device 100 of the present embodiment is formed by the holder 120, the temperature detection unit 110, the support pipe 130, and the like. As will be described in detail later, a coil spring is built in the holder 120, and when the coil spring urges the temperature detection unit 110 upward, when the cooking container is not placed on the virtues 3, the temperature detection unit The upper end of 110 protrudes from the upper surface of Gotoku 3 (the surface on which the cooking container is placed). When the cooking container is placed on Gotoku 3, the temperature detection unit 110 is pushed down at the bottom of the cooking container, and the upper end surface of the temperature detection unit 110 is pushed up by the coil spring and comes into contact with the bottom of the cooking container. For this reason, it becomes possible to detect the temperature of the bottom part of a cooking container with the temperature sensor incorporated in the temperature detection part 110. FIG.

  FIG. 2 is a cross-sectional view showing the internal structure of the temperature detecting device 100 of the present embodiment. The temperature detection device 100 includes a substantially cylindrical holder 120 formed of sheet metal, a temperature detection unit 110 attached to the upper end of the holder 120, a coil spring 121 that urges the holder 120 upward, and a support that supports the holder 120. And a pipe 130. The lower end side of the holder 120 is reduced in diameter over a predetermined length, and is attached to the support pipe 130 in a movable state. A boiled soup cover 123 is attached to the reduced diameter portion of the lower end side of the holder 120.

  The temperature detection unit 110 includes a metal heat collection unit 111 that comes into contact with the bottom of the cooking container, a temperature sensor 113 from which a lead wire 113a is drawn, and a cylindrical sensor storage unit 112 that stores the temperature sensor 113. ing. A gap between the sensor housing portion 112 and the temperature sensor 113 is filled with a heat conductive adhesive 114. Moreover, the sensor storage part 112 has the big flange part 112a, and is formed with the metal material. The temperature detecting unit 110 is attached to the holder 120 by fixing the outer peripheral portion of the heat collecting unit 111 to the flange unit 120a formed at the upper end of the holder 120 together with the flange unit 112a of the sensor storage unit 112. ing.

  A spring receiver 122 that supports the coil spring 121 is provided at a lower position inside the holder 120. The spring receiver 122 is attached to the upper end of the support pipe 130, but is movable in the vertical direction with respect to the holder 120. A coil spring 121 is housed between the temperature detection unit 110 and the spring receiver 122 inside the holder 120 in a slightly compressed state. Therefore, the holder 120 is always urged upward by the coil spring 121.

  FIG. 3 is an explanatory view showing the detailed shape of the boiled juice cover 123 attached to the temperature detection device 100 of the present embodiment. FIG. 3A shows the outer shape of the boiled juice cover 123, and FIG. 3B shows the boiled juice cover 123 taken at the position AA in FIG. 3A. The cross-sectional shape is shown. As shown in FIGS. 3 (a) and 3 (b), the boiled juice cover 123 is a substantially umbrella-shaped member formed by pressing a sheet metal, and expands downward 123a. And a hanging portion 123b in which the outside of the extended portion 123a is bent downward. And in the extension part 123a, the flow-down groove | channel 123c formed in groove shape is formed in the circumferential direction of the boiled juice cover 123 at equal intervals. In addition, as a result of the formation of a plurality of downflow grooves 123c in the extended portion 123a, a ridge portion 123d is formed between the downflow groove 123c and the downflow groove 123c. In the present embodiment, the expanded portion 123a and the drooping portion 123b of the boiled juice cover 123 correspond to the “outer surface” of the present invention.

  In the temperature detection device 100 according to the present embodiment, since the boiled juice cover 123 is formed in such a shape, even when the stove burner 10 is used over a long period of time, the combustion state is deteriorated. Can be avoided. Hereinafter, this reason will be described. As a preparation for this, the reason why the combustion state may deteriorate due to long-term use in the stove burner 10 equipped with the conventional temperature detection device will be described.

FIG. 4 is an explanatory diagram showing the reason why the combustion state may deteriorate in the conventional temperature detection device 200 when the stove burner 10 is used for a long period of time. FIG. 4A shows a state of the conventional temperature detection device 200 before use. As shown in the figure, in the conventional temperature detection device 200, a conical tube-shaped boiled juice cover 223 is attached so as to cover the lower end of the holder 120. Further, the outer diameter D ₀ of the lower end of the boiled juice cover 223 is such that the lower end of the holder 120 is not covered with the boiled juice, and the supply of secondary air to the stove burner 10 through the air supply passage 10a is hindered. Not set to a size.

  When boiling occurs during cooking, the boiling juice flows down on the boiling juice cover 223 as shown in FIG. After the boiled soup flows down, as shown in FIG. 4C, the boiled soup adhering to the surface of the boiled soup cover 223 gathers at the lower end of the boiled soup cover 223, and the boiled soup The liquid drops from the lower end of the cover 223. Since the boiled soup cover 223 is formed in a conical shape, the boiled soup is uniformly attached to the surface of the boiled soup cover 223, and the boiled soup cover 223 is boiled all over the lower circumference. As a result, the simmered juice is dripped evenly from the entire lower end.

While the boiled juice is collected at the lower end of the boiled soup cover 223, the boiled juice continues to drip in this way, but if the boiled juice that reaches the dripping does not collect, it will not drip any more. At this time, the lower end of the boiled soup cover 223 is in a state where an amount of boiled soup that does not reach dripping adheres to the entire lower end. Here, since the boiled soup has a high viscosity, the boiled soup adhering to the lower end of the boiled soup cover 223 is slightly overhanging from the lower end of the boiled soup cover 223. And boiled simmered juice is solidified in that state (a state of slightly protruding outward). Therefore, when boiled spilled juice is solidified, as shown in FIG. 4 (d), the outer diameter D ₁ of the lower end portion of the boiled spilled juice cover 223 becomes slightly larger than the outer diameter D ₀ at the time of a new.

  In the conventional temperature detection apparatus 200, this is repeated every time boiling occurs, and the outer diameter of the lower end portion of the boiling juice cover 223 gradually increases. As a result, if the stove burner 10 is used for a long period of time, the outer diameter of the lower end of the boiled juice cover 223 becomes larger than the inner diameter of the air supply passage 10a, and the air supply passage 10a is narrowed. This hinders the supply of secondary air. Finally, the combustion state of the stove burner 10 may be deteriorated.

  FIG. 5 is an explanatory diagram showing the reason why the combustion state is not deteriorated even when the stove burner 10 is used over a long period of time in the temperature detection device 100 of the present embodiment. Also in the temperature detection apparatus 100 of the present embodiment, while a large amount of boiled juice is flowing down immediately after boiling occurs, as shown in FIG. The simmered juice will flow down all over. However, when the amount of boiled soup flowing down decreases, the boiled soup avoids the peak portion 123d when flowing down the extended portion 123a (see FIG. 3A) of the boiled soup cover 123 and flows down. 123c collects and flows. As a result, as shown in FIG. 5B, the boiled juice comes down from the downflow groove 123c.

  As shown in FIG. 5 (c), even when the boiled juice is further reduced as a result of the boiled juice flowing down from the downflow groove 123 c, the boiled juice remains at the lower end of the boiled juice cover 123. To drop from the position below the downflow groove 123c. Finally, the amount of boiled soup that does not reach dripping is in a state of adhering to the lower end of the boiled soup cover 123 below the downflow groove 123c. As a result, as shown in FIG. 5 (d), the boiled juice is solidified exclusively at the position of the lower end of the boiled juice cover 123 below the downflow groove 123c.

  Thus, in the boiled soup cover 123 of the present embodiment, the position where the boiled soup finally drops at the lower end of the boiled soup cover 123 can be limited to the lower part of the downflow groove 123c. For this reason, the position where the boiled juice is solidified is also limited to the lower part of the downflow groove 123c. Therefore, even if the stove burner 10 is used for a long time, the air supply passage is formed by the boiled boiled juice in the other portions. The gap with 10a is not narrowed. In addition, since the boiled juice concentrates in the downflow groove 123c, the boiled juice dripping from below the downflow groove 123c increases, but finally, only a boiled amount of boiled juice that does not reach the dripping remains. . Therefore, solidification is not promoted with respect to the conventional boiled juice cover 223 even below the downflow groove 123c.

  Further, as described above with reference to FIG. 3, since the downflow grooves 123 c are formed at equal intervals along the circumferential direction of the boiled juice cover 123, the position where the boiled juice is solidified is also the boiled juice cover 123. It becomes the position of equal intervals of the lower end of. For this reason, even when the solidification of the boiled juice progresses at the lower end of the boiled juice cover 123 due to the use of the stove burner 10 for a long time, the passage of the secondary air is prevented. The flow of secondary air passing through 10a is not biased. For this reason, even if it becomes difficult for secondary air to pass through the air supply passage 10a due to long-term use, deterioration of the combustion state of the stove burner 10 can be avoided.

  For the above reasons, in the temperature detection device 100 of the present embodiment, even when the stove burner 10 is used for a long period of time, the boiled juice is solidified at the lower end of the boiled juice cover 123 and the air supply passage 10a ( 1) and the supply of secondary air is not hindered. For this reason, it becomes possible to avoid the situation which worsens the combustion state of the stove burner 10 also by long-term use.

  There are several variations in the above-described embodiment. In the following, these modifications will be briefly described with a focus on differences from the present embodiment.

  In the present embodiment described above, the flow down groove 123c is described as being formed in the extended portion 123a of the boiled juice cover 123. However, the location where the downflow groove 123 c is formed is not necessarily limited to the extended portion 123 a of the boiled juice cover 123. For example, in the boiled juice cover 323 of the first modified example illustrated in FIG. 6, the flow-down groove 323c is formed in a range extending from the extended portion 323a to the hanging portion 323b. Also in such a first modified example, the position where the boiled juice is finally dripped at the lower end of the boiled juice cover 323 can be limited to the lower part of the downflow groove 323c, so the position where the boiled juice is solidified. Can also be limited to the lower part of the downflow groove 323c. For this reason, even if the stove burner 10 is used over a long period of time, the gap with the air supply passage 10a is not narrowed by the solidification of the boiled juice in other portions, and the combustion state of the stove burner 10 is deteriorated. It becomes possible to avoid the situation.

  Or you may form the descent | fall groove | channel 423c not in the expansion part 423a but the drooping part 423b like the boiled juice cover 423 of the 2nd modification illustrated in FIG. Also in the second modified example, the boiled juice will flow down the downflow groove 423c while avoiding the peak portion 423d formed between the downflow groove 423c and the downflow groove 423c, and finally boiled down. The position where the juice drops can be limited. FIG. 8 shows the reason why the boiled soup cover 423 of the second modification can finally limit the position where the boiled soup drops.

  Also in the boiled soup cover 423 of the second modified example, while a large amount of boiled soup is flowing down immediately after the boiled, as shown in FIG. On top of 423, the boiled juice will flow down evenly. However, when the amount of boiled soup flowing down decreases, as shown in FIG. 8B, the boiled soup begins to flow down from the downflow groove 423c, avoiding the peak portion 423d, and further boiled down soup. As shown in FIG. 8C, the boiled juice is dripped exclusively from the downflow groove 423c. As a result, the amount of boiled soup that does not reach dripping is finally attached to the lower end of the downflow groove 423c, and boiled at that position as shown in FIG. 8 (d). The juice will solidify.

  Thus, also in the boiled juice cover 423 of the second modified example, the position where the boiled juice is solidified is limited to the lower end of the downflow groove 123c. For this reason, even if the stove burner 10 is used over a long period of time, the gap with the air supply passage 10a is not narrowed by the solidification of the boiled juice in other portions, and deterioration of the combustion state can be avoided. It becomes possible.

  As mentioned above, although the present Example and the modification were demonstrated, this invention is not limited to said Example and a modification, It is possible to implement in a various aspect in the range which does not deviate from the summary.

1 ... Gas stove, 2 ... Top plate, 3 ... Gotoku, 4 ... Opening for burner,
10 ... a stove burner, 10a ... an air supply passage, 11 ... a burner body,
12 ... Mixing tube, 13 ... Burner head, 14 ... Burner cap,
15 ... Spark plug, 100 ... Temperature detector, 110 ... Temperature detector,
111 ... Heat collecting part, 112 ... Sensor storage part, 113 ... Temperature sensor,
115 ... Adhesive, 120 ... Holder, 121 ... Coil spring,
122 ... Spring holder, 123 ... Boiled soup cover, 123a ... Expansion part,
123b ... drooping part, 123c ... descent groove, 123d ... peak part,
130 ... support pipe, 200 ... temperature detector, 223 ... boiled juice cover,
323 ... Boiled soup cover, 323c ... Downflow ditch, 423 ... Boiled soup cover,
423c ... Downflow groove, 423d ... Peak.

Claims (3)

In the temperature detection device for detecting the temperature of the cooking container placed on the virtues, the air supply passage through which the secondary air is supplied is provided in the stove burner formed through the center,
A support pipe erected in the air supply passage;
A holder that is formed in a substantially cylindrical shape and is fitted in the support pipe at the lower end side in a manner movable in the vertical direction;
A heat collecting part attached to the upper end of the holder;
A temperature sensor attached to the inside of the heat collecting unit;
A coil spring for urging the holder upward;
A boiled juice cover that is attached to the outer periphery of the holder and prevents the boiled juice from falling on the lower end of the holder by flowing down the outer surface of the boiled juice from the cooking container;
At least a part of a path along which the boiled juice flows down is formed in a groove shape on the outer surface of the boiled juice cover. The temperature detection device according to claim 1,
The temperature detecting device, wherein a plurality of groove shapes are formed at equal intervals along the circumferential direction of the boiled soup cover on the outer surface of the boiled soup cover. In the temperature detection device according to claim 1 or 2,
The boiled soup cover has an extended portion having a shape extending downward, and the groove shape is formed in at least a part of the extended portion.

Images