JP6523156B2 - Stove burner and stove with the same - Google Patents

Description

  The present invention has a burner body and a burner head removably mounted on the burner body from above, and radially outward from the annular peripheral portion in plan view of the burner head in an annular radial direction An annular burner having a radial injection hole for forming a flame is provided, and an infrared intensity detecting means for detecting an infrared intensity of infrared rays radiated from the object to be heated is provided below the annular burner, and the infrared intensity detecting means The present invention relates to a stove burner equipped with temperature deriving means for deriving the temperature of the object based on the detected infrared intensity, and a stove equipped with the same.

Conventionally, as a cooking stove, a contact temperature sensor such as a thermistor or a thermocouple is provided as a temperature detection means for detecting the temperature of the bottom of the pan as the object to be heated, based on the temperature detected by the contact temperature sensor It is known that the control unit for adjusting the heating power of the stove burner is provided. In the cooking stove, the control unit appropriately adjusts the heating power of the stove burner to prevent a tempura fire or the like and to improve the convenience of cooking.
However, the contact-type temperature sensor as the temperature detection means may cause contact failure, and there is a possibility that the temperature at the bottom of the pan can not be appropriately measured. In addition, since the contact type temperature sensor needs to be in contact with the bottom of the pan, it has no choice but to adopt a configuration which protrudes upward from the top plate, which impairs the aesthetic appearance of the stove.
Therefore, as described in Patent Document 1, there has been proposed a stove provided with a non-contact temperature detection device including an infrared sensor that detects the intensity of infrared light. In general, when the temperature of the bottom of the pan as the object to be heated is detected by the noncontact temperature detection device, the noncontact temperature detection device is provided vertically below the substantially central portion in plan view of the stove burner Although the configuration is often employed, in the configuration, there is a problem that the non-contact temperature detection device is likely to adhere to the spilled material from the object to be heated.
Therefore, in Patent Document 1 described above, as shown in the embodiment of FIG. 4, the non-contact temperature detection device is a stove in a plan view in order to prevent adhesion of the blowout to the non-contact temperature detection device. The stove burner has an infrared ray passing hole disposed at a position shifted from a substantially central portion in plan view of the burner and passing infrared rays from the bottom surface of the object to the non-contact temperature detection device. A configuration has been proposed.

Patent No. 4422943

In the embodiment shown in FIG. 4 of the above-mentioned Patent Document 1, it is not shown how to which the infrared ray passing hole is provided for which portion of the stove burner, and non-contact type temperature detection There was no specific disclosure as to how the device is provided for the stove burner and the infrared passage hole.
For this reason, in the embodiment shown in FIG. 4 of Patent Document 1, depending on the arrangement of the infrared ray passing hole and the non-contact type temperature detection device, the boilout from the object to be heated passing through the infrared ray passing hole is There is a possibility that the non-contact temperature detection device may reach and adhere to it, making it impossible to detect an appropriate temperature.
Moreover, in the stove burner shown in FIG. 4 of the above-mentioned Patent Document 1, it passes from the infrared ray passing hole toward the non-contacting temperature detection device in relation to many other components constituting the stove. The non-contact type temperature detection device was installed such that the inclination of the infrared rays (the angle formed by the bottom surface of the pan as the object to be heated H and the infrared rays) becomes relatively large. In such an installation mode, there is a risk that the boil-over spilled into the interior of the stove burner from the infrared passage hole may drip to the side of the non-contact temperature detection device, and sufficient contamination of the non-contact temperature detection device It was hard to say that the prevention effect was obtained. For this reason, in order to obtain a sufficient stain preventing effect, it is necessary to separate the non-contact temperature detection device from the stove burner main body, and there is a problem that it becomes difficult to miniaturize the stove burner.

  The present invention has been made in view of the above-mentioned problems, and its object is to suppress adhesion of a boil-out of the object to be heated to the infrared intensity detecting means and to appropriately detect the infrared intensity by the infrared intensity detecting means As a result, it is possible to provide a stove burner and a stove equipped with the same, which can perform temperature derivation well and realize miniaturization.

The stove burner for achieving the above purpose is
A burner body and a burner head removably mounted on the burner body from above are formed to form flames radially outward in an annular radial direction from an annular peripheral portion in plan view of the burner head An annular burner with radial injection holes is provided,
Infrared intensity detection means for detecting the infrared intensity of infrared radiation emitted from the object to be heated is provided below the radial injection holes of the annular burner,
A stove burner comprising a temperature deriving means for deriving the temperature of the object to be heated based on the infrared intensity detected by the infrared intensity detecting means, characterized in that
The infrared intensity detection means is provided on one side region which is one side region divided by a straight line passing through the ring center of the annular peripheral portion of the burner head in plan view, and the other side which is the other side region The region is provided with an infrared ray passing hole which makes infrared rays emitted from the object to be heated be directed to the infrared intensity detecting means and pass through the burner head.
The annular burner has an annular mixture passage in an annular view in plan view for introducing a mixture of fuel gas and combustion air to the radial injection holes, and the annular mixture passage is a part of the annular mixture passage. Having a recessed and recessed flow passage portion,
The infrared ray passage area passing through the infrared ray passage hole and radiated toward the infrared ray intensity detection means is formed in a space formed by the concave and concave flow passage portion being recessed. The infrared intensity detecting means and the infrared ray passing hole are provided.

According to the above-mentioned characteristic configuration, since the annular burner which has a burner head is adopted as a burner and only the infrared rays passage hole is provided in the burner head concerned, the approach of the blowout to the inside of the annular burner The path is only from the infrared ray passing hole, and the entry of the blowout into the annular burner can be sufficiently suppressed.
Furthermore, in the above annular burner, infrared intensity detection means is provided on one side region which is one side region divided by a straight line passing through the ring center of the annular peripheral portion of the burner head in plan view. Since the infrared passage hole for passing the burner head by directing the infrared ray radiated from the object to the infrared intensity detection means is adopted in the other side region which is the side region, the infrared ray passing hole and the infrared ray Compared with the configuration in which the intensity detection means is provided along the vertical direction, it is possible to suppress the blowout that has flowed into the inside of the annular burner from the infrared ray passing hole from being led to the infrared intensity detection means.
Furthermore, for example, by adopting a burner head having a bulging shape in which the top surface thereof bulges upward with the ring center at the top, the blowout from the infrared ray passing hole may enter the inside of the annular burner. In any case, the blowout moves along the inner surface of the upper surface of the burner head in a bulging shape, so most of the blowout travels downward along the other side area where the infrared ray passing hole is provided. It is possible to prevent movement to the infrared intensity detecting means provided in the one side area. As a result, it is possible to prevent the infrared intensity detection means from being soiled by the blowout, and it is possible to maintain good detection of the infrared intensity by the infrared intensity detection means.
In addition, the annular mixture gas flow path annular in plan view for introducing a mixture of fuel gas and combustion air to the radial injection holes has a recessed flow passage portion in which a portion thereof is recessed and an infrared ray passing hole The space through which the infrared ray passing through and emitted toward the infrared intensity detection means is formed by the recess and recess of the recessed channel portion (the annular mixed gas channel is expanded by the recess. Since the infrared intensity detecting means and the infrared ray passing hole are provided in a form formed in the space outside the flow path, the infrared ray directed from the infrared ray passing hole to the infrared intensity detecting means and the bottom surface of the object to be heated A state in which the angle is sufficiently reduced can be realized.
As a result, even if the infrared intensity detection means is not separated from the annular burner greatly, it is possible to preferably prevent the blowout entering from the infrared passage hole from being transmitted to the infrared intensity detection means, so a relatively compact burner for a stove realizable.

Further features of the stove burner are:
The recessed and missing flow passage portion is formed in a part in an annular circumferential direction of the annular mixture flow passage.

Since the cross-sectional area of the flow passage is smaller in the vicinity of the recessed portion of the annular mixture flow passage than the other portion of the flow passage, the flow of the mixture may be disturbed.
According to the above-mentioned characteristic configuration, since the portion to be recessed and notched is formed in a part of the annular circumferential direction of the annular mixture flow passage, the turbulence of the flow of the mixture flowing through the annular mixture passage can be annularly mixed The circumferential direction of the air flow path can be limited to a part, and the disturbance of the unnecessary mixture flow can be suppressed.

Further features of the stove burner are:
The infrared intensity detection means and the infrared passage hole are provided to face each other across the ring center of the burner head in plan view,
In the planar view, the concave and not-falling flow passage portion is a region between the infrared intensity detection means and the ring center in a passing region of infrared rays emitted toward the infrared intensity detection means through the infrared ray passing hole. It is in the point formed in the part which the area | region between and the said annular mixture flow path overlap.

According to the above-mentioned characteristic configuration, since the infrared intensity detection means and the infrared passage hole are provided in a state of facing each other across the ring center of the burner head in plan view, for example, the top surface portion is a burner head. By adopting a bulging shape that bulges upward with the ring center at the top, even if blewout may enter the inside of the annular burner from the infrared ray passing hole, the boilout will occur above the burner head. Since it moves along the inner surface of the upper surface portion in a bulging shape, most of the blowout moves downward along the other side area where the infrared ray passing hole is provided, and the infrared ray provided in one side area Transmission to the intensity detection means can be well prevented. As a result, it is possible to prevent the infrared intensity detection means from being soiled by the blowout, and it is possible to maintain good detection of the infrared intensity by the infrared intensity detection means.
Furthermore, according to the above-mentioned characteristic configuration, the infrared intensity detecting means and the infrared ray passing hole are opposed to each other across the ring center of the burner head in plan view, and the recessed passage portion is the infrared ray passing hole In the passing area of the infrared rays emitted toward the infrared intensity detecting means through the light flux, the area between the infrared intensity detecting means and the ring center and the annular mixture Under the condition that the infrared intensity detecting means and the infrared ray passing hole are provided at the same distance, and the angle between the infrared ray radiated from the object to be heated and passing through the infrared ray passing hole to reach the infrared intensity detecting means and the bottom surface of the object to be heated Compared to the case where the infrared intensity detection means and the infrared passage hole are provided without pinching the ring center of the annular peripheral portion of the burner head under the conditions set at the same angle, Concave Amounts can be reduced, it is possible to suppress the turbulence of the air-fuel mixture flow in the object to be concave channel portion.

Further features of the stove burner are:
The annular burner is a Bunsen burner provided with a mixing tube for mixing fuel gas and combustion air,
The infrared ray intensity detection means and the infrared ray passage hole pass through the infrared ray passage hole and the infrared ray passage region emitted toward the infrared ray intensity detection means overlaps the tube axis of the mixing tube in plan view. In the state, the infrared intensity detecting means and the mixing tube are provided in a state of facing each other across the ring center of the burner head.

Usually, in the Bunsen burner, in the area where the mixing tube is provided, sufficient space for installing other components can not be secured, so the design freedom for installing other components in the area is concerned. There is a problem that the degree falls.
According to the above feature configuration, the infrared ray passing region emitted through the infrared ray passing hole toward the infrared ray intensity detecting means in the plan view is an axial center of the mixing tube. Since the infrared intensity detecting means and the mixing tube are opposed to each other across the ring center of the burner head, the infrared intensity detecting means can be installed at a position sufficiently separated from the mixing tube, For example, it is possible to increase the degree of freedom in design regarding the installation direction of the light receiving portion of the infrared intensity detection means.
Further, according to the above-mentioned characteristic configuration, it is possible to preferably prevent the passing area of the infrared rays which has passed through the infrared ray passing hole from covering the mixing tube, and it is possible to sufficiently secure the amount of infrared rays reaching the infrared intensity detection means.
According to the above feature configuration, the infrared ray passing region emitted through the infrared ray passing hole toward the infrared ray intensity detecting means in the plan view is an axial center of the mixing tube. Since the infrared intensity detecting means and the mixing tube are opposed to each other across the ring center of the burner head, the infrared intensity detecting means can be installed at a position sufficiently separated from the mixing tube, For example, it is possible to increase the degree of freedom in design regarding the installation direction of the light receiving portion of the infrared intensity detection means.
Further, according to the above-mentioned characteristic configuration, since the passing area of the infrared rays which has passed through the infrared ray passing hole can be hard to cover the mixing tube, the amount of infrared rays reaching the infrared intensity detecting means can be sufficiently secured.

Further features of the stove burner are:
The infrared ray passing hole is provided in a region near the annular peripheral portion between the annular peripheral portion of the burner head and the ring center in a plan view.

  According to the above characteristic configuration, the infrared ray passing hole is provided in a region near the annular circumferential portion between the annular circumferential portion and the annular center of the burner head in plan view, and the annular circumferential portion of the burner head and the ring The infrared intensity detecting means and the infrared ray passing hole can be further separated from each other, since the infrared ray intensity detecting means and the infrared ray passing hole can be separated further from each other, and the blowout which has entered into the burner from the infrared ray passing hole is the infrared intensity detecting means Transmission to the side of the vehicle can be prevented better.

Further features of the stove burner are:
The burner head has a bulging crest portion in a bulging shape in which the ring center of the annular peripheral portion bulges upward.
The infrared ray passing hole is provided at a position eccentric to the bulging top of the burner head.

  According to the above-mentioned characteristic configuration, as the burner head, one having a bulging crest with a bulging shape in which the ring center of the annular peripheral part bulges upward is adopted, and the infrared ray passing hole is formed from the bulging crest of the burner head Since the blowout is provided at an eccentric position, for example, even if the blowout flows from the infrared passage hole, the blowout is transmitted along the straight line passing through the infrared passage hole among the straight lines connecting the bulging crest and the annular peripheral portion, The blowout can be retained in the other side area, and can be further directed away from the infrared intensity detection means provided in the one side area. This makes it possible to prevent the adhesion of the blowout to the infrared intensity detection means even better.

Further features of the stove burner are:
The burner head includes a cap portion having a top surface portion and a cylindrical cylindrical leg portion extending downward from the top surface portion,
With the burner head mounted on the burner body, the cylindrical leg of the cap is arranged as an isolation wall separating the annular mixture channel from the central cavity formed in the center of the annular burner. And
The infrared ray passing hole is provided in the top surface portion of the cap portion in a state where the central cavity and the outside of the annular burner are in communication with each other.

  According to the above-mentioned feature configuration, the blowout that may flow from the infrared ray passing hole can be configured to flow downward in the state of traveling along the separation wall forming the central cavity.

  The stove equipped with the stove burner described so far functions well as a stove that preferably achieves the effects described so far.

Whole perspective view of stove burner An exploded perspective view of the stove burner Decomposition sectional view of stove burner Assembly sectional view of stove burner Top view of stove burner Illustration of the burner for the stove in oblique view from the lower front Figure showing a stove burner on a stove Perspective view of a stove with a stove burner

A stove burner and a stove 200 equipped with the stove burner according to an embodiment of the present invention will be described based on the drawings. In the embodiment, the arrow direction of the arrow Z is the upper side, and the direction opposite to the arrow direction of the arrow Z is the lower side.
The stove 200 shown in FIGS. 7 and 8 has a top plate 50 having a planar upper surface and a heating port, and a five-to-one 51 capable of mounting the object H in a state of being separated above the heating port, and fuel A stove burner is provided which burns the mixture M of the gas G and the primary combustion air A and jets the mixture M upward from the heating port to heat the object H to be heated.
In addition, as the to-be-heated material H, the pan etc. of general materials, such as glass, iron, alumite, and stainless steel, are used suitably.

The stove burner is, as shown in FIGS. 1 to 7, a Bunsen combustion type external flame type burner, which includes a burner main body 70 and a burner head 80 mounted on the burner main body 70 in a detachable manner from above. And a main flame injection hole 81 (an example of a radial injection hole) forming the main flame K1 radially outward from the annular peripheral portion 80a in plan view of the burner head 80, and the main flame K1. And an annular burner 100 having a sleeve flame injection hole 82 (an example of a radial spray hole) for forming a sleeve flame K2 for holding flames.
The burner main body 70 of the annular burner 100 is configured to form a mixing pipe 65 for mixing the fuel gas G and the primary combustion air A inside as shown in FIGS. The mixing pipe 65 is provided with a gas nozzle 64 for spouting the fuel gas G, and the primary combustion air A flows in with the fuel gas G spouted from the gas nozzle 64, and the mixture M in the mixing pipe 65. Is formed.

The stove burner includes infrared intensity detecting means 60 for detecting the intensity of infrared rays emitted from the bottom surface of the object H to be heated and passing through the inside of the annular burner 100 as shown in FIG. 7, and the infrared intensity detecting means And temperature deriving means 61 for deriving the temperature of the object H based on the intensity of the infrared ray detected at 60. The controller 62 adjusts the opening degree of the flow rate adjusting valve 63 of the fuel gas G provided in the gas flow path connected to the gas nozzle 64 based on the temperature derived by the temperature deriving means 61, and the object H to be heated Perform automatic temperature control, and emergency stop control at excessive temperature rise. Incidentally, as shown in FIG. 7, the infrared intensity detection means 60 is provided below the top plate 50 and the annular burner 100 in the vertical direction. The lower side of the annular burner 100 also includes a region not overlapping the annular burner 100 in a plan view.
The infrared intensity detecting means 60 separately detects the infrared intensities of the infrared rays emitted from the bottom surface of the object H in two different wavelength ranges, and the temperature deriving means 61 further comprises The temperature of the object H to be heated is derived based on the ratio of the infrared light intensities in the two wavelength ranges detected by the infrared light intensity detection means 60. With this configuration, the temperature of the bottom surface of the article H can be accurately detected without depending on the emissivity of the article H. The specific configuration of the infrared intensity detection means 60 is known, so the detailed description thereof is omitted here.

Thus, although the annular burner 100 is comprised so that the infrared rays radiated | emitted from the bottom face of the to-be-heated material H may be passed through the inside, the concrete structure is demonstrated below.
As shown in FIGS. 2, 3 and 4, the annular burner 100 comprises a burner main body base 40 constituting the burner main body 70, a burner main body upper part 30 constituting the burner main body 70, and an annular notch member 20 constituting the burner head 80. And the cap portion 10 constituting the burner head 80 are provided in the order described from the lower side.
The burner main body base 40 has a first wedge-shaped portion 44 forming the lower side of the mixing tube 65 in a state along the tube axis P1 (an axis along the horizontal direction X in FIG. 2) of the mixing tube 65 A cylindrical portion 41 having an axial center along a straight line P2 (a straight line along the vertical direction Z in FIG. 2) orthogonal to the tube axial center P1 of 65 is provided, and has a central cavity S1 inside.
The side surface of the cylindrical portion 41 extends in the direction opposite to the first wedge-shaped portion 44 in a direction along the tube axis P1 of the mixing tube 65 in a plan view and the side view (the direction shown in FIGS. An eyelid portion 42 extending obliquely downward in FIG. Furthermore, an opening 42 a is provided on the side surface of the cylindrical portion 41 so as to communicate the space below the weir portion 42 with the central cavity S 1 of the cylindrical portion 41.
Incidentally, a projection 43a protruding toward the central cavity S1 is provided on the inner surface of the cylindrical portion 41 on the central cavity S1 side, and the details thereof will be described later, but the burner head 80 is a burner main body by the projection 43a. It is positioned in the circumferential direction with respect to 70.
In the vicinity of the cylindrical portion 41 of the burner body base 40, as shown in FIG. 2, an opening 45 penetrating the burner body base 40 in the vertical direction is provided outside the central cavity S1. A spark plug (not shown) is disposed in such a manner as to pass through 45.

The burner main body upper portion 30 is provided with a second wedge-shaped portion 34 forming the upper side of the mixing tube 65 in a state along the tube axis P1 of the mixing tube 65, and the mounting state of the burner head 80 on the burner main body In the state shown in FIG. 4, the outer periphery of the cylindrical portion 41 of the cylindrical portion 41 of the burner main body base 40 is surrounded at a predetermined interval, and has an annular contact portion 35 contacting the upper surface of the wedge portion 42 of the burner main body base 40 An outer portion 31 is provided.
Furthermore, it is a space formed by scraping off the inner ring of the upper portion of the annular outer portion 31 in the state of fastening the upper portion 30 of the burner body and the base portion 40 of the burner body (state shown in FIG. 4) A receiving site 32 is provided.
To add the explanation, as shown in FIG. 2, the receiving portion 32 is formed by notching the upper inner side of the annular outer portion 31 and has an annular receiving portion 32 b having an annular bottom, and the annular receiving portion 32 b It consists of a cone-shaped receiving part 32c which has a continuous shape above the receiving part 32b and extends upward in a mortar shape. The annular receiving portion 32b is formed with a cutout portion 32a which is cut out outward in the ring radial direction at a part of the ring circumferential direction.
Then, the burner head 80 is received at the receiving portion 32, and the burner head 80 is mounted on the burner body 70.
Further, a thermocouple (not shown) is provided in the opening 33 formed in the upper portion 30 of the burner main body so as to be inserted, and the control device 62 controls the annular burner 100 based on the detection result of the thermocouple. Determine if there is a misfire at

As shown in FIGS. 1 to 5, the burner head 80 has a disk-shaped cap portion 10 in plan view, and a plurality of first along a straight line extending radially outward from the center of the ring at the top thereof. It comprises an annular notch member 20 having a notch groove 21.
To add the description, the cap portion 10 has a bulging crest portion having a bulging shape in which the disk center O (corresponding to the ring center of the annular peripheral portion 80a of the burner head 80) bulges upward in plan view A top surface portion 14 having an infrared ray passing hole 12 at a position eccentric from the top portion, and a cylindrical cylindrical leg portion 13 extending downward from the top surface portion 14 are provided. To add the description, the top surface portion 14 is configured in an arc shape on the top surface in a side view.
In the mounting state where the burner head 80 is mounted on the burner main body 70 (the state shown in FIG. 4), the cap outer surface of the cylindrical leg portion 13 slides on the cylindrical inner surface of the cylindrical portion 41 of the burner main body base 40. It is positioned so that the axial center P2 of the cylindrical portion 41 and the disk center O coincide with each other.
Furthermore, the cylindrical leg portion 13 of the cap portion 10 is provided with a cutout portion 13b that cuts out a part of the cylindrical wall from the end on the burner main body 70 side toward the top surface portion 14 side. The notch portion 13 b engages with the projection 43 a provided on the inner surface of the cylindrical portion 41 in the mounted state (state shown in FIG. 4) in which the burner head 80 is mounted on the burner main body 70. 10 is positioned with respect to the burner body base 40 around the axis P2.
Further, the cylindrical leg portion 13 of the cap portion 10 is an aperture formed in the cylindrical portion 41 of the burner main body base 40 in the mounted state (state shown in FIG. 4) in which the burner head 80 is mounted on the burner main body 70. An opening 13a is provided at a position opposite to 42a.

As described above, the annular notch member 20 has a plurality of first notch grooves 21 along the straight line extending in the radial direction from the center of the ring to the outside in the upper portion thereof and has an annular shape in plan view. The first notch grooves 21 are formed at substantially equal intervals in the ring circumferential direction. However, in the installation state where the annular burner 100 is installed on the stove 200 (the state shown in FIGS. 7 and 8), in the part facing the Vitoku 51, the interval between the adjacent first notch grooves 21 is wide. doing.
The bottom of the annular notch member 20 has a bottom surface supported in contact with the annular bottom of the annular receiving portion 32b of the receiving portion 32 of the burner body base 40, and radially outward from the center of the ring in plan view A plurality of second notch grooves 22 along the extending straight line are provided. The plurality of second notch grooves 22 are formed at substantially equal intervals in the ring circumferential direction. In the embodiment, the first notch groove 21 is provided at substantially the same position in the ring circumferential direction.
The annular notch member 20 has a protrusion 24 projecting laterally on the lower side, and the protrusion 24 is fitted into a notch portion 32 a formed in the annular receiving portion 32 b of the burner main body upper portion 30. , In the circumferential direction relative to the upper portion 30 of the burner body.
Furthermore, the annular notch member 20 has a gap between the lower side surface thereof and the annular receiving portion 32b and the mortar-shaped receiving portion 32c of the receiving portion 32 in the receiving state (state shown in FIG. 4) to the receiving portion 32. It becomes the state which has
With this configuration, as shown in FIG. 4, in the mounted state where the burner head 80 is mounted on the burner main body 70 (the state shown in FIG. 4), the lower side surface of the cap portion 10 and the upper side surface of the annular notch member 20 The main flame flow passage R2 is formed in the area surrounded by the first notch groove 21 and the upper side surface of the burner body 70 (formed by the annular receiving portion 32b of the receiving portion 32 and the mortar-shaped receiving portion 32c And a lower side surface of the annular notch member 20 (a surface formed by the second notch groove 22 other than the bottom surface, and a surface opposing the annular receiving portion 32b and the bowl-shaped receiving portion 32c of the receiving portion 32) The sleeve flame channel R3 is formed in the gap surrounded by the above.
In the cross-sectional view shown in FIG. 4 with regard to the channel R3 for sleeve flame, in the cross-sectional view shown in FIG. 4, first, the annular receiving portion 32b is a bottom portion 32bb along the horizontal direction and a side portion rising substantially vertically from the bottom portion 32bb While having 32bs, the mortar-like receiving part 32c has inclined surface part 32cs which comprises an inclined surface. And the channel R3 for sleeve flames is formed between the said treatment side site | part 32bb, side part 32bs, inclined surface site | part 32cs, and the lower side of the cyclic | annular notch member 20 which opposes them.

By adopting the above configuration, as shown in FIG. 4, the outer periphery of cylindrical portion 41 of burner main body base 40 in the mounted state (the state shown in FIG. 4) where burner head 80 is mounted on burner main body 70. Annular mixed ring in plan view formed in a space surrounded by the surface, the upper side surface of the weir portion 42 of the burner main body base 40, the annular surrounding portion 31 of the burner main body upper portion 30, and the annular notch member 20 A gas flow path R1 is formed. Although not shown in the cross-sectional view of FIG. 4, in the mounted state where the burner head 80 is mounted on the burner main body 70 (the state shown in FIG. 4), the annular outer portion 31 of the burner main body upper portion 30 is It is airtightly connected with the surrounding wall 46 (shown in FIG. 2) of the burner main body base 40, and the surrounding wall 46 is also a part that forms the annular mixture flow passage R1. Further, in the configuration, in the mounting state where the burner head 80 is mounted on the burner main body 70 (the state shown in FIG. 4), the cylindrical leg portion 13 has the annular portion 41 and the cylindrical portion 41 of the burner main body base 40. Act as an isolation wall separating the central cavity S1 formed inside the
Furthermore, as shown in FIG. 4, by adopting the above configuration, a main flame flow passage R2 connecting the annular mixture gas flow passage R1 and the main flame injection hole 81 in communication, and an annular mixture flow passage R1. A sleeve flame channel R3 communicating with the sleeve flame injection hole 82 is independently connected to the annular mixture flow channel R1.
In addition, since the sleeve flame channel R3 is formed by the gap formed between the annular notch member 20 and the receiving portion 32 of the burner main body upper portion 30, the channel length can be made sufficiently long. As a result, the flow path length of the end flame flow path R3 which is the flow path length from the end R3a on the side of the annular mixed gas flow path R1 of the end flame flow path R3 to the injection port 82 for the end flame is the main flame flow. It is configured to be longer than the flow path length of the main flame flow path R2, which is the flow path length from the end R2a on the side of the annular mixed gas flow path R1 of the path R2 to the main flame injection hole 81.
Furthermore, at a specific position in the pipe circumferential direction of the annular mixture flow passage R1, between an end R3a on the side of the annular mixture flow passage R1 of the sleeve flow passage R3 and an annular mixture flow passage R1 of the main flame passage R2. With regard to the positional relationship with the side end R2a, the end R3a on the side of the annular mixture channel R1 of the end flame channel R3 is closer to the end R2a on the side of the annular mixture channel R1 of the main flame channel R2. Is also provided upstream of the annular mixture passage R1.
In the cross-sectional view shown in FIG. 4 with respect to the main flame flow passage R2, in the cross-sectional view shown in FIG. 4, the annular notch member 20 first extends in the vertical direction (direction along arrow Z) on the inner circumferential side thereof. A vertical wall portion 20a and a ring inner peripheral inclined wall 20b provided continuously with the ring inner peripheral vertical wall portion 20a on the ring inner peripheral side and extending obliquely upward on the outer side in the ring radial direction are provided. The main flame flow passage R2 is a gap surrounded by the ring inner peripheral wall portion 20a and the ring inner peripheral inclined wall 20b, the lower side surface of the burner head 80, and the outer surface of the cylindrical portion 41 of the burner main body 70. Thus, the main flame flow passage R2 is formed.
Further, in the annular burner 100 according to the embodiment, the pressure loss of the mixture M flowing through the endothermic flow passage R3 is more than the pressure loss of the mixture M flowing through the main flame flow passage R2. Also, the sleeve flow channel R3 and the main flame flow channel R2 are configured to be smaller.
Even if the thermal power is increased and the primary air amount is increased by the above configuration, the main flame K1 formed by the main flame injection holes 81 is the sleeve flame K2 formed by the main flame injection holes 82. It is possible to further suppress the influence of the change of the combustion state of
In the embodiment, the main flame injection holes 81 and the sleeve flame injection holes 82 formed in the annular peripheral portion 80a of the annular burner 100 are, as shown in FIG. It is provided in a mutually separated state at the upper annular end wall 83. In the cross-sectional view of FIG. 4, the upper end of the annular end wall 83 extends to the vicinity of a straight line connecting the lower end of the top surface 14 of the cap 10 and the upper end of the bowl-shaped receiving portion 32 c of the burner main body 30. It is extended.
As a result, the flows of the air-fuel mixture M flowing through the main flame injection holes 81 and the sleeve flame injection holes 82 can be maintained further independent of each other, and the sleeve flame K 2 is used as the main flame injection holes 81. It is possible to suppress the influence of the change of the combustion state of the main flame K1 formed.

Next, the infrared ray passing area R will be described.
By adopting the above configuration, in the mounted state where the burner head 80 is mounted on the burner main body 70 (the state shown in FIG. 4), as shown in FIG. A recessed concave flow passage portion (a portion where the flow passage cross-sectional area is reduced and a portion shown by reference numeral R1a in FIG. 4) which is concaved and recessed is partially provided in the ring circumferential direction of the annular mixture flow passage R1. With this configuration, the passage region R of the infrared radiation which passes through the infrared passage hole 12 and is emitted toward the infrared intensity detection means 60 (shown in FIG. 5 and FIG. 7) As a result, the space S2 (the area on the lower side of the weir portion 42: a space which spreads to the outside of the flow passage due to the annular mixture flow passage R1 being recessed) is formed.
That is, among the infrared rays radiated from the bottom surface of the object H, the infrared rays passing through the infrared ray passing hole 12 provided in the top surface portion 14 of the cap 10 pass through the central cavity S1, as shown in FIG. After passing through the aperture 13a of the cylindrical leg portion 13 of the cap portion 10, passing through the aperture 42a of the cylindrical portion 41 of the burner main body base 40, and passing through the space S2 which is the area under the weir portion 42 The intensity detection means 60 is reached.
In other words, as shown in FIG. 4, the infrared ray passing through the infrared ray passing hole 12 passes through the central cavity S1, passes through the opening 13a of the cylindrical leg portion 13 of the cap portion 10, and the cylindrical portion of the burner main portion 40 The infrared ray passing hole 12 and the infrared intensity detecting means 60 are provided so as to reach the infrared intensity detecting means 60 after passing through the opening 42a of 41 and passing through the space S2 which is the area below the heel portion 42 . Incidentally, when the infrared ray passing hole 12 is faced from the infrared intensity detecting means 60, as shown in FIG. 6, the annular burner 100 has a shape in which the lower portion thereof is greatly cut.
By adopting the configuration, as shown in FIG. 7, the infrared rays emitted from the object H to be heated and passing through the infrared ray passing holes 12 to reach the infrared intensity detection means 60 and the bottom surface of the object H The angle α can be set to, for example, a relatively small acute angle, and the vertical direction of the stove 200 (arrows even when the distance between the infrared intensity detection means 60 and the infrared passage hole 12 is sufficiently large The height in the direction along Z) can be made sufficiently small to achieve compactness. As a result, while making the stove 200 compact in the height direction, the distance between the infrared intensity detection means 60 and the infrared passage hole 12 is sufficiently large, and the inside of the annular burner 100 is entered from the infrared passage hole 12 It is possible to well prevent the possible boil over from being transmitted to the infrared intensity detection means 60.

As described above, in the case where the annular mixed gas flow passage R1 is provided with the recessed and missing flow passage portion R1a, the flow passage cross-sectional area of the recessed and falling flow passage portion R1a becomes smaller, and the smaller the flow passage cross-sectional area is, The flow rate of the air-fuel mixture M led to the main flame injection hole 81 and the tail flame injection hole 82 provided in the vicinity of the concave and concave flow passage portion R1a is provided away from the concave and concave flow passage portion R1a. It will be different from the flow rate of the air-fuel mixture M introduced to the hole 81 and the sleeve fire injection hole 82. From the viewpoint of maintaining a substantially uniform combustion state in the circumferential direction of the annular burner 100, the flame formed by the main flame injection holes 81 and the sleeve flame injection holes 82 is the concave flow passage portion R1a. It is preferable that the flow passage cross-sectional area does not greatly differ from the flow passage cross-sectional area of the annular mixed gas flow passage R1 other than the recessed and absent flow passage portion R1a. Therefore, in the embodiment, as shown in FIG. 5, the infrared ray passing hole 12 is annularly formed between the annular peripheral portion 80a of the burner head 80 and the ring center (the disk center O of the cap portion 10) in plan view. It is provided in the area | region near the peripheral part 80a.
Thereby, the infrared rays emitted from the object H to be heated and passing through the infrared ray passing hole 12 and reach the infrared ray intensity detecting means 60 under the condition that the infrared ray intensity detecting means 60 and the infrared ray passing hole 12 are provided at the same distance in plan view. And the bottom surface of the object to be heated H, when the infrared ray passing hole 12 is viewed in a plan view, between the annular peripheral portion 80a of the burner head 80 and the ring center (the disk center O of the cap portion 10). Since the distance from the infrared ray passing hole 12 to the annular mixed gas flow passage R1 can be made larger than in the case where it is provided in the region close to the ring center, The amount can be made small, and the disturbance of the flow of the air-fuel mixture M in the concave and concave flow passage site R1a can be suppressed.
In addition, as shown in FIG. 4, the site | part which connects the to-be-recessed recessed flow-path site | part R1a and the flow path R3 for sleeves is comprised so that the flow-path cross-sectional area of notch groove R1ak may be enlarged. Thereby, the flow rate of the air-fuel mixture M supplied to the end flame channel R3 continuing to the recessed and missing flow path portion R1a is increased, and the combustion stability is secured.

As to the positional relationship between the infrared intensity detecting means 60 and the infrared ray passing hole 12, as shown in FIG. 5, the ring center of the annular peripheral portion 80a of the burner head 80 (the disk center of the cap portion 10 The infrared intensity detection means 60 is provided in the one side region S3 which is one side region divided by the straight line L passing through O), and the object H is emitted from the object H in the other side region S4 which is the other side region. An infrared ray passing hole 12 for passing the infrared rays toward the infrared intensity detecting means 60 is provided.
The cap portion 10 according to the embodiment has a bulging shape in which the disk center O of the top surface portion 14 bulges upward, and the inner surface of the top surface portion 14 is configured substantially the same as the outer surface. By adopting the above arrangement, the blowout entering from the infrared ray passing hole 12 is transmitted along the inner surface of the top surface portion 14 having the bulging shape, so that it can be favorably suppressed to be transmitted to the infrared intensity detection means 60 side.
Furthermore, from the viewpoint of further suppressing transfer of the boil-over spilled from the infrared ray passing hole 12 to the infrared ray intensity detecting means 60, the infrared ray intensity detecting means 60 and the infrared ray passing hole 12 in plan view are shown in FIG. It is provided in the state which opposes on both sides of the ring center (disk center O of the cap part 10) of the annular peripheral part 80a of the burner head 80. As shown in FIG.

  Further, the above-mentioned concave / droplet flow passage portion R1a of the annular mixed gas flow passage R1 is an infrared intensity detecting means within the passing region R of the infrared rays emitted toward the infrared intensity detecting means 60 through the infrared ray passing hole 12 A region between the ring 60 and the ring center (the disk center O of the cap portion 10) of the ring peripheral portion 80a of the burner head 80 is formed at the overlapping portion of the ring mixture channel R1. Thereby, the infrared rays emitted from the object H to be heated and passing through the infrared ray passing hole 12 and reach the infrared ray intensity detecting means 60 under the condition that the infrared ray intensity detecting means 60 and the infrared ray passing hole 12 are provided at the same distance in plan view. The infrared intensity detecting means 60 and the infrared ray passing hole 12 are at the ring center of the annular peripheral portion 80a of the burner head 80 under the condition that the angle formed by the bottom of the object H to be heated is set to the same angle. Since the distance from the infrared ray passage hole 12 to the annular mixed gas flow passage R1 can be increased compared to the case where the disk center O) is not provided, the concaved flow passage portion R1a of the annular mixed gas flow passage R1 is recessed. The missing amount can be reduced, and the disturbance of the flow of the air-fuel mixture M in the recessed and missing flow passage portion R1a can be suppressed.

Usually, in the annular burner 100 as a Bunsen burner, in the area where the mixing tube 65 is provided, a sufficient space for installing other components can not be secured. There is a problem that the degree of freedom in design of installing
So, in the said embodiment, the infrared rays intensity detection means 60 and the infrared rays passage hole 12 pass the infrared rays passage hole 12 and the passing area of the infrared rays radiated toward the infrared intensity detection means 60 in plan view And the infrared intensity detecting means 60 and the mixing tube 65 face each other across the ring center of the annular peripheral portion 80a of the burner head 80 (the disk center O of the cap portion 10). It is prepared in the state to do. Thereby, for example, the degree of freedom in design regarding the installation direction of the light receiving part of the infrared intensity detecting means 60 can be raised.

[Another embodiment]
(1) In the above embodiment, the infrared intensity detecting means 60 and the infrared passage hole 12 sandwich the ring center (the disk center O of the cap portion 10) of the annular peripheral portion 80a of the burner head 80 in plan view. Show an example of the configuration provided in a state of facing each other.
However, in plan view, the infrared intensity detection means 60 and the infrared passage hole 12 are necessarily provided facing each other across the ring center of the annular peripheral portion 80a of the burner head 80 (disk center O of the cap portion 10). You don't have to.

(2) In the above embodiment, the infrared intensity detecting means 60 and the infrared ray passing hole 12 pass through the infrared ray passing hole 12 and the infrared ray emitted toward the infrared intensity detecting means 60 in plan view. In a state where the region overlaps the tube axis P1 of the mixing tube 65, the infrared intensity detecting means 60 and the mixing tube 65 sandwich the ring center of the annular peripheral portion 80a of the burner head 80 (disk center O of the cap portion 10) The configuration example provided in the opposite state is shown.
However, the present invention is not limited to the embodiment, and the straight line connecting the infrared intensity detection means 60 and the infrared passage hole 12 has a predetermined angle with the tube axis P1 of the mixing tube 65 in plan view. It may be a configuration.

(3) In the above embodiment, the burner head 80 has been described as an example comprising the separate cap portion 10 and the annular notch member 20 from the viewpoint of improving the cleaning performance, but the cap portion 10 and the annular notch are illustrated. You may comprise the member 20 integrally.

(4) In the above embodiment, the top surface portion 14 of the cap portion 10 has a bulging shape in which the disk center O (corresponding to the ring center of the annular peripheral portion 80a of the burner head 80) bulges upward in plan view. The example of composition which has an infrared rays passage hole 12 in the position which had a top and was eccentric from the bulging top was shown. However, the top surface portion 14 of the cap portion 10 may not bulge upward, and may have a flat plate shape whose upper surface is flat.

(5) In the above embodiment, the end R3a on the side of the annular mixture flow path R1 of the end flow path R3 is a flow path length from the end R3a to the end injection hole 82 for the end flame The flow path length is longer than the flow path length of the main flame flow path R2, which is the flow path from the end R2a on the annular gas mixture flow path R1 side of the main flame flow path R2 to the main flame injection hole 81. An example has been shown.
However, the present invention is not limited to the above configuration, and the sleeve flame having a flow length from the end R3a on the side of the annular mixed gas flow passage R1 of the sleeve flame channel R3 to the sleeve flame injection hole 82 The flow path of the main flame flow path R2, which is the flow path length from the end R2a on the annular gas mixture flow path R1 side of the main flame flow path R2 to the main flame injection hole 81 The configuration may be shorter than the path length, or may be the same length.

(6) In the annular burner 100 according to the above embodiment, the pressure loss of the air-fuel mixture M flowing through the end flame flow path R3 is the pressure loss of the air-fuel mixture M flowing through the main flame flow path R2. An example is shown in which the sleeve flame channel R3 and the main flame channel R2 are configured to be smaller than the above.
However, in order for the pressure loss of the mixture M flowing through the sleeve flame channel R3 to be equal to or higher than the pressure loss of the mixture M flowing through the main flame channel R2, The flame channel R2 may be configured.

  The configurations disclosed in the above embodiment (including the other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in the other embodiments as long as no contradiction arises. The embodiment disclosed in the present specification is an exemplification, and the embodiment of the present invention is not limited thereto, and can be appropriately modified without departing from the object of the present invention.

  The stove burner according to the present invention and the stove provided with the same suppress adhesion of the boil-off of the object to be heated to the infrared intensity detection means, and the infrared intensity detection means appropriately detects the infrared intensity to derive the temperature It can be effectively used as a stove burner and a stove equipped with the same, which can realize the miniaturization as well as can perform well.

10: cap 12: infrared ray passing hole 60: infrared intensity detecting means 61: temperature deriving means 70: burner main body 80: burner head 80a: annular peripheral portion 100: annular burner 200: stove A: air for primary combustion G: fuel gas H: object to be heated M: mixture P1: tube axial center R: passage region R1: annular mixture passage R1a: recess / deletion passage portion S2: recess / deletion space S3: one side region S4: other side region

Claims (8)

A burner body and a burner head removably mounted on the burner body from above are formed to form flames radially outward in an annular radial direction from an annular peripheral portion in plan view of the burner head An annular burner with radial injection holes is provided,
Infrared intensity detection means for detecting the infrared intensity of infrared radiation emitted from the object to be heated is provided below the radial injection holes of the annular burner,
A stove burner comprising a temperature deriving means for deriving a temperature of the object to be heated based on the infrared intensity detected by the infrared intensity detecting means,
The infrared intensity detection means is provided on one side region which is one side region divided by a straight line passing through the ring center of the annular peripheral portion of the burner head in plan view, and the other side which is the other side region The region is provided with an infrared ray passing hole which makes infrared rays emitted from the object to be heated be directed to the infrared intensity detecting means and pass through the burner head.
The annular burner has an annular mixture passage in an annular view in plan view for introducing a mixture of fuel gas and combustion air to the radial injection holes, and the annular mixture passage is a part of the annular mixture passage. Having a recessed and recessed flow passage portion,
The infrared ray passage area passing through the infrared ray passage hole and radiated toward the infrared ray intensity detection means is formed in a space formed by the concave and concave flow passage portion being recessed. A burner for a stove provided with the infrared intensity detection means and the infrared passage hole.   The burner for a stove according to claim 1, wherein the recessed and missing flow passage portion is formed in part in an annular circumferential direction of the annular mixture flow passage. The infrared intensity detection means and the infrared passage hole are provided to face each other across the ring center of the burner head in plan view,
In the planar view, the concave and not-falling flow passage portion is a region between the infrared intensity detection means and the ring center in a passing region of infrared rays emitted toward the infrared intensity detection means through the infrared ray passing hole. The burner for stoves according to claim 1 or 2 formed in the part which the field and the above-mentioned annular mixture flow path overlap. The annular burner is a Bunsen burner provided with a mixing tube for mixing fuel gas and combustion air,
The infrared ray intensity detection means and the infrared ray passage hole pass through the infrared ray passage hole and the infrared ray passage region emitted toward the infrared ray intensity detection means overlaps the tube axis of the mixing tube in plan view. The stove burner according to claim 3, wherein in the state, the infrared intensity detection means and the mixing tube are provided opposite to each other across the ring center of the burner head.   The said infrared rays passage hole is provided in the area | region near the said annular peripheral part between the said annular peripheral part of the said burner head and the said ring center in planar view, It is described in any one of Claims 1-4. Stove burner. The burner head has a bulging crest portion in a bulging shape in which the ring center of the annular peripheral portion bulges upward.
The burner for a stove according to any one of claims 1 to 5, wherein the infrared ray passing hole is provided at a position eccentric from the bulging top of the burner head. The burner head includes a cap portion having a top surface portion and a cylindrical cylindrical leg portion extending downward from the top surface portion,
With the burner head mounted on the burner body, the cylindrical leg of the cap is arranged as an isolation wall separating the annular mixture channel from the central cavity formed in the center of the annular burner. And
The stove burner according to any one of claims 1 to 6, wherein the infrared ray passing hole is provided in the top surface portion of the cap portion in a state of communicating the central cavity with the outside of the annular burner.   A stove provided with the stove burner according to any one of claims 1 to 7.

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