JP3761701B2 - Cooking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooking device, and more particularly to a cooking device that bakes food with a gas burner, and can also be used for cooking and cooking.
[0002]
[Prior art]
As a cooking device for baking foods such as fish and meat, there is one having a structure shown in FIGS. 10 and 11, for example.
An operation part (10) having an ignition switch (12) and a heating power changeover switch (13) (14) is provided at the front part which is one side part of the instrument body (1), and a fire bed (15) Inside, there are juxtaposed hot plate type gas burners (20) (20) extending from the front part which is one side of the instrument body (1) to the rear part which is the other side part (front and rear direction). 20) includes a burner pipe (21) and a substantially semi-cylindrical hot plate (22) facing this from above.
[0003]
In the vicinity of the upstream end of the burner pipe (21) (the end corresponding to the one side portion of the instrument body (1)), the pilot burner (24) and the pilot fire formed on the pilot burner (24) are placed on the burner pipe (21). An ignition device (25) including a flame guide (26) and the like for guiding to the side is disposed.
A combustion monitoring sensor (31) composed of a thermocouple or a frame rod is disposed in the vicinity of the downstream end of the burner pipe (21) (the end corresponding to the other side of the instrument body (1)).
[0004]
In this case, when the ignition switch (12) of the operation part (10) provided at the front side as the one side part of the instrument body (1) is operated, a gas valve (not shown) is opened and the burner pipe is opened from the gas nozzle (250). (21) The gas is supplied into the pyroburner (24) and the pilot flame burns in the flame hole (28) near the upstream end of the burner pipe (21) by the flame guide (26). 28) Guided by the part, and transferred to the flame holes (28) and (28). Then, the flame hole (28) (28) located in the vicinity of the upstream end of the burner pipe (21) sequentially transferred to the downstream flame hole (28) (28), the flame hole (28) at the downstream end portion When a flame is formed in (28), the flame is detected by the combustion monitoring sensor (31). Thereafter, the food above is burned by the radiant heat from the hot plate (22) which is red hot by the flame of the burner pipe (21). When the gas burner (20) is combusted, the combustion state is monitored by the combustion monitoring sensor (31), and when the gas burner (20) blows off, the gas valve (not shown) is closed and the gas to the gas burner (20) is closed. Supply is stopped and a safe state is secured.
[0005]
In this case, the ignition provided at the end of the burner pipe (21) located on the one side of the appliance body (1) (the end on the front side of the appliance body (1) in FIG. 11). Since the combustion monitoring sensor (31) is provided at the end portion on the other side of the burner pipe (21) farthest from the device (25), the burner pipe (21) located on the one side side is provided. The combustion monitoring sensor (31) does not output a detection signal unless the flame formed near the end is transferred to the opposite end and the entire burner pipe (21) is not combusted. Therefore, unlike the one in which the combustion monitoring sensor (31) and the ignition device (25) are arranged near the end of the burner pipe (21) located on one side of the appliance body (1), the end There is no inconvenience that a detection signal is output from the combustion monitoring sensor (31) even though the vicinity of the end of the burner pipe (21) located on the opposite side of the part is not burning. That is, it is detected by the combustion monitoring sensor (31) that the fire has been transferred to the entire area of the burner pipe (21).
[0006]
[Problems to be solved by the invention]
However, in the conventional device, since the combustion monitoring sensor (31) is provided in the vicinity of the rear portion as the other side portion of the instrument body (1), it is difficult to repair and inspect the combustion monitoring sensor (31). was there.
The above problem will be described in further detail.
[0007]
The cooker is generally installed so that one side of the appliance body (1), for example, the back is along the wall of the kitchen, etc. In the appliance, the ignition device (25) and the combustion monitoring sensor (31) must be repaired and inspected in the installed state. Accordingly, the wall surface of the kitchen does not become a work obstacle when repairing and inspecting the ignition device disposed in the vicinity of the front part, which is one side of the appliance body (1) located on the opposite side of the back surface. On the other hand, when performing a repair inspection of the combustion monitoring sensor (31) disposed at the rear of the instrument body (1), it is necessary to work in a narrow part near the wall surface of the kitchen. It is difficult to repair and inspect the monitoring sensor (31). In particular, in a double-sided grill type cooker further equipped with an upper-fired burner facing the gas burner (20) (20) from above, repair inspection of the combustion monitoring sensor (31) in a narrow space between the upper and lower burners. Since it is necessary to perform work, such work is more difficult to perform.
[0008]
The present invention has been made in view of the above points, and is capable of reliably detecting a fire transfer to the entire gas burner (20) and easily repairing and inspecting the combustion monitoring sensor (31) and the ignition device (25). The problem is to provide a vessel.
[0009]
[Means for Solving the Problems]
  The technical means of the invention of claim 1 for solving the above-mentioned problem is as follows:
  "Equipment body (1)Front sideWhenRear sideA gas burner extending so as to connect and heating an object to be heated;
  In the gas burnerFront sideCombustion monitoring sensor (31) and ignition device (25) disposed near the end of the
  From the ignition device (25) sideRear sideA flame hole forward path consisting of a group of flame holes formed in the gas burner in an arrangement manner that sequentially fires toward the
  SaidRear sideFrom the flame hole return path consisting of a group of flame holes formed in the gas burner in such an arrangement manner that sequentially fires toward the combustion monitoring sensor (31) side,
  A flame transfer device for transferring the flame from the flame hole at the downstream end of the flame hole forward path to the flame hole at the upstream end of the flame hole return path;And
  The combustion monitoring sensor (31) Part and ignition device (twenty five) Is part of the operation part for instrument operation (62) Removable control box provided with (61) Exists insideThat's it.
[0010]
  According to the above technical means, when the ignition device (25) is operated, the flame hole portion located at the upstream end of the flame hole forward path is ignited from the ignition device (25), and the portion starts to burn.
  Then, the downstream side of this combustion part (the instrument body (1)Rear side) The flame hole groups arranged so as to move toward the fire are sequentially ignited toward the downstream side.
  When the flame hole portion at the downstream end of the flame hole forward path is in a combustion state, the flame in the flame hole portion is transferred to the flame hole portion at the upstream end of the flame hole return path via the fire transfer device.
  Then, the flame sequentially moves from the upstream side to the downstream side of the flame hole group constituting the flame hole return path, reaches the vicinity of the combustion monitoring sensor (31), and reaches the entire gas burner with the monitoring sensor (31). Is confirmed.
[0011]
  According to the above technical means, the instrument body (1)Front sideSince the combustion monitoring sensor (31) and the ignition device (25) are disposed near the end of the gas burner located atFront sideTo do fromYou can.
[0012]
  Claim 2Like the invention ofIn invention of Claim 1“The gas burner comprises a first burner pipe having a flame hole group forming the flame hole forward path, a second burner pipe having a flame hole group forming the flame hole return path, and the fire transfer device. In the case of “comprising”, the flame transferred from the ignition device (25) to the flame hole at the upstream end of the flame hole in the first burner pipe is directed to the flame hole group of the first burner pipe toward the downstream side. Fire is transferred, and then transferred from the fire transfer device to the second burner pipe.
  Then, the flame holes formed in the second burner pipe are sequentially transferred to the combustion monitoring sensor (31) side, and the combustion monitoring sensor (31) detects the combustion state of the entire burner.
[0016]
  Claim 3Like the invention of
  “The gas burner is formed of a single straight burner pipe,
  In the one burner pipe,
  A flame hole group constituting the flame hole outward path;
  Flame hole group constituting the flame hole return path;
  A group of flame holes constituting the fire transfer device connecting these,
  It is formed to line up in a U shape as a wholeAnd
  Above the burner pipe, a hot plate having an arc-shaped cross section extending in the same direction as the burner pipe and having a raised central portion in the width direction is provided, and on the lower surface of the hot plate, A partition plate that hangs down between the flame hole forward path and the flame hole return path (94) Is protruding,
  The partition plate (94) Exists in a range that does not reach the formation region of the flame hole group arranged in the U-shaped tip folding regionIn such a case, a straight burner pipe can be used,Claim 2It is necessary to use two burner pipes as in the inventionAbsent.
[0019]
【The invention's effect】
  The present invention has the following specific effects.
  Claims 1 toClaim 3According to the invention of the instrument body (1) in the gas burnerFront sideSince both the combustion monitoring sensor (31) and the ignition device (25) are provided near the end of the gas burner, the combustion monitoring sensor (31) and the ignition device (25)Front sideThe end ofRear sideCompared to the above-described conventional apparatus which is disposed apart from the end of the ignition device, it is possible to easily repair and inspect the ignition device and the combustion monitoring sensor (31).
  In addition, since the combustion monitoring sensor (31) and the ignition device (25) are provided separately at the start end and the end of the path connected in the order of the flame hole forward path → fire transfer apparatus → flame return path, the Fire transfer to the entire path can be reliably detected.
[0020]
  Since it is only necessary to provide one combustion monitoring sensor (31) and one ignition device (25) for the pair of flame hole forward and flame hole return paths, the combustion monitoring sensor ( Compared to the case where 31) and the ignition device (25) are provided separately, the required number of these combustion monitoring sensors (31) and the like can be reduced.
  or,Since a large work space for cooking work is secured, repair and inspection work such as the combustion monitoring sensor (31) can be performed from the front side, which is the operation part side of the instrument body (1), so that the work is further facilitated. .
[0021]
  In the invention of claim 3, one burner pipe can be used, and it is not necessary to use two burner pipes as in the invention of claim 2.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
  Next, an embodiment of the above invention will be described.
  As shown in FIG.1 and FIG.2, in the appliance main body (1) of the cooking device which concerns on this Embodiment, the heating chamber (16) opened and closed by a door (97), and this heating chamber (16) There are four sets of lower fire burner units (2) and (2) arranged below, and upper fire gas burners (3) and (3) arranged above the heating chamber (16). The lower-fired burner units (2) and (2), which are the gas burners described above, are provided with pull-out water pans (41) and (41) and an operation unit (62) on the front surface thereof. Control box(61) SuddenlyI'm out.
[0024]
  Details of each part will be described below.
[About heating chamber (16)]
  A heating cabinet (16) formed in the appliance body (1).) Front side ofThe opening (18) on the (operation unit (62) side) is covered with an openable and closable door (97) that pivots about the shaft support (19) at the lower end.
  Specifically, the projecting pieces (190) and (190) projecting forward from both sides of the lower end of the door (97) and the component walls of the instrument body (1) can be rotated by the support shafts (191) and (191). It is connected.
  Further, a handle (150) is provided in the vicinity of the upper end of the door (97). When the upper end of the door (97) is rotated by holding the handle (150), as shown by an imaginary line in FIG. Further, the door (97) rotates to open and close the opening (18) of the heating chamber (16).
[0025]
  In addition, a grill net (11) formed by welding metal wires in a grid pattern is horizontally disposed below the heating chamber (16) and is opposed to each other in the heating chamber (16). The grill net (11) is placed on a channel material (51) (51) long in the front-rear direction (direction from the entrance of the heating chamber (16) to the back wall) attached to a pair of horizontal walls.
[About lower burner unit (2)]
  Below the grill (11), there is an appliance body (1) Front cookingWork side and the oppositeThe rear of the pairThere are four lower fire burner units (2) and (2) extending side by side in parallel, and two sets of lower fire burner units (2) and (2) located on the left side in FIG. The left lower heating device (A) for heating the left half zone of the heating chamber (16) from below is configured by the above, and the remaining half zone in the heating chamber (16) The right lower fire device (B) for heating from below is configured in the same manner as the left lower fire device (A).
[0026]
As shown in FIGS. 1 to 3, the lower-fire burner unit (2) includes first and second burner pipes (210) and (211) which are parallel to each other, and these first and second burner pipes (210). (211) The main body of the appliance (1) The fire transfer box (29) as a fire transfer device that surrounds both ends of the rear side, and the first and second burner pipes (210) (211) The first and second heat plates (27a) and (27b) having substantially semi-cylindrical shapes that are placed facing each other from above are provided. Then, the first and second burner pipes (210) (211), which will be described later, are formed in the recessed portions on the lower surface side of the first and second hot plates (27a) (27b), that is, in the recessed grooves (20a) (20b). ) Flame holes (28) and (28) are facing each other.
[0027]
In the first and second burner pipes (210) and (211), the flame holes (28) and (28) that open toward the first and second heat plates (27a) and (27b) can be transferred to the first and second heat plates. The flame holes (28) and (28) formed in the first burner pipe (210) form the flame hole forward path described above. The row of flame holes (28) and (28) formed in the other second burner pipe (211) is the above-mentioned flame hole return path.
[0028]
  The fire transfer box (29) is formed in the shape of a rectangular parallelepiped that is long in the lateral direction (the direction connecting both sides of the instrument body (1)).Has beenThe end portions of the first and second burner pipes (210) and (211) and the first and second heat plates (27a) and (27b) are inserted from the front surface.
  Also, the flame holes (28) and (28) formed in the rear side end of the instrument body (1) of the first and second burner pipes (210) and (211) are connected to the ceiling plate (290) as shown in FIG. The inside of a fire transfer box (29) (the lower cover (292) may be omitted) as a box composed of a lower cover (292), a rear plate (298), and both lateral plates (299) (299) Is invading.
  That is, the above-mentioned fire transfer box (29) includes a ceiling plate (290) as a guide plate, a rear plate (298) bent and suspended from the entire rear edge thereof, and both horizontal plates bent and suspended from the entire side edges of the ceiling plate (290). (299) (299) and the space surrounded by the ceiling plate (290), the rear plate (298) and the horizontal plates (299) (299) of the first and second burner pipes (210) (211). It consists of a lower lid (292) covering from below.
[0029]
Further, the rear ends of the first and second heat plates (27a) and (27b) are supported by a support fitting (68) located in the fire transfer box (29) as shown in FIGS. The support fitting (68) is fixed to the second burner pipe (211) by welding, and the second burner pipe (211) is screwed to a part of the instrument body (1) together with the above-mentioned fire transfer box (29). 100). The support structure at the rear end of the first heat plate (27a) and the second heat plate (27b) has the same structure, and the support at the rear end of the second heat plate (27b) will be described as an example. As shown in FIG. 6, the lower end horizontal portion (681) of the support metal fitting (68) is welded to the flat portion (200) obtained by crushing the rear end of the second burner pipe (211). A horizontal support plate (680) for supporting the second hot plate (27b) extends from the upper end of the upright plate (682) that bends up from one end of the lower horizontal portion (681) of the support metal fitting (68). Has been. Stopper pieces (683) and (683) are bent upright on both sides of the horizontal support plate (680) so as to abut against the end of the second heat plate (27b) and prevent the rearward movement of the second heat plate (27b). At the tip of the horizontal support plate (680), a semi-disc-shaped tip upright plate (684) is bent upright, and a second heat plate (27b) is attached to the tip upstand plate (684). It is supposed to be placed.
[0030]
  In the present embodiment, the flame holes (28), (28) of the first and second burner pipes (210), (211) are blown to the lower surface of the ceiling plate (290) of the fire transfer box (29). So that the gas diffuses along the lower surface and mixes with each other, so that it is transferred from the first burner pipe (210) to the second burner pipe (211).It has become.
[0031]
Next, the support structure of the front end of the front second hot plate (27b) (the end on the cooking operation side, which is one side of the appliance body (1)) will be described.
As shown in FIG. 6, the upper surface of the second burner pipe (211) in the vicinity of the front end holds a combustion monitoring sensor (31) (which may be a frame rod) made of a thermocouple and the second heat plate (27b). A base (88) for supporting the front end is provided. The base ends of the pair of opposed horizontal pieces (881) (881) projecting from the base (88) toward the fire transfer box (29) are connected to each other by a connecting plate (882). A second hot plate (27b) is placed on the arcuate upper edge (883) of (882). The connecting plate (882) has a through hole (885) for inserting a tip of a combustion monitoring sensor (31) described later.
[0032]
A horizontal piece (886) for placing the lower edge of the second heat plate (27b) on both sides of the base (884) bent from the lower end of the connecting plate (882) to the front side of the instrument body (1) (886) protrudes horizontally, and by placing the second hot plate (27b) on the horizontal piece (886) (886), the second hot plate (27b) is attached to the second burner pipe (211). This prevents rotation in the outer circumferential direction. The front end of the second hot plate (27b) hits the rear plate (503) of the sensor support box (500), which will be described later, to prevent the front plate from moving forward, but considering the thermal expansion of the second hot plate (27b). Thus, there is a slight space between the second hot plate (27b) and the rear plate (503).
[0033]
The base (884) is welded to the second burner pipe (211). The front end of the first hot plate (27a) is also supported in the same manner as the front end of the second hot plate (27b).
Next, the mounting structure of the combustion monitoring sensor (31) will be described.
A sensor support box (500) is connected to the end of the base (884) of the base (88) on the front side of the instrument body, and the upper plate (501) of the sensor support box (500) is connected to the base (884). A sensor housing notch (504) is formed over the entire area in the longitudinal direction. Further, U-shaped notches (505) and (506) having the same width as the sensor receiving notches (504) and open upwards are bent and suspended from both longitudinal ends of the upper plate (501). (503). The combustion monitoring sensor (31) is accommodated in the sensor accommodation notches (504) and the U-shaped notches (505) and (506) following both ends thereof. A presser for fixing the combustion monitoring sensor (31) accommodated in the sensor accommodating notch (504) to the lower part of one side plate (507) bent and suspended from the side of the upper plate (505). An engagement hole (509) is formed in which one end (790) of the spring (79) is engaged. A notch (510) located above the engagement hole (509) is formed on the inner edge of the sensor accommodation notch (504) formed in the upper plate (501). The other side plate (508) facing the side plate (507) is provided with an L-shaped groove (511), and the tip of the bottom (513) portion of the L-shaped groove (511) is bent upward. Thus, a spring engaging recess (512) is formed. In order to attach the combustion monitoring sensor (31) to the sensor support box (500), the tip of the combustion monitoring sensor (31) is inserted into the through hole (885) of the connecting plate (882), and the substantially horizontal The combustion monitoring sensor (31) maintained in the posture is fitted below the sensor receiving notch (504) of the upper plate (501) of the sensor support box (500). Then, the outer peripheral groove (311) in the vicinity of the rear end of the combustion monitoring sensor (31) is fitted around the periphery of the U-shaped notch (505) of the front plate (502) of the sensor support box (500). Then, holding the U-shaped curved portion (791) at the other end of the pressing spring (79), one end (790) of the pressing spring (79) is moved from the notch (510) of the upper plate (501) to the side plate (507). Inserted into the engagement hole (509) as appropriate, the upper curved portion (794) is hung on the upper portion of the combustion monitoring sensor (31), and the lower side portion (792) is an L-shaped groove (511) formed in the side wall (508). It is slid in the order of the vertical side (519) of the base, the bottom side (513) of the lower end thereof, and the spring engaging recess (512) at the tip of the base (513) to be engaged with the spring engaging recess (512). Then, the upward curved portion (794) of the presser spring (79) enters the spring hook groove (312) formed slightly forward from the center of the combustion monitoring sensor (31), and the combustion monitoring sensor (31) is moved from above. As a result, the combustion monitoring sensor (31) is attached as shown in FIGS.
[0034]
  The gas distribution pipe extending in the lateral direction of the instrument body (1) is provided at the front end (upstream end) of the instrument body (1) in the first and second burner pipes (210) and (211). Nozzles (34) and (34) protruding from (33) are inserted, and gas from a proportional solenoid valve (36) disposed upstream of the gas distribution pipe (33) is inserted into the nozzles (34) and (34). Is to be supplied.
  The first and second burner pipes (210)(211)A pilot burner (24) connected to a pilot circuit (not shown) branching from the downstream side of the proportional solenoid valve (36) in the vicinity of the insertion side end of the nozzle (34) (34) in In addition, an ignition device (25) comprising a pilot fire guide (23) and an ignition electrode (40) (see FIG. 5) for distributing the pilot fire formed in the pilot burner (24) to the first burner pipes (210) and (210). ) Is arranged.
  In this case, a single ignition device (2) between two sets of lower burner units (2) (2) having first and second burner pipes (210) (211) and a fire transfer box (29) ( 25), and the single ignition device (25) ignites the first burner pipes (210) (210) of each lower fire burner unit (2) (2). The number of ignition devices (25) can be reduced as compared with the case where separate ignition devices (25) are provided for the units (2) and (2).
[0035]
The primary air supply holes (200) and (200) forming part and the gas distribution pipe (33) located at the upstream end of the first and second burner pipes (210) and (211) are surrounded by an air supply box (44). In addition, an air supply port (47) connected to the discharge port (49) of the fan case (46a) of the air supply fan (46) is formed in the bottom wall of the air supply box (44). The air supply box (44), the fan case (46a) and the like are accommodated in a control box (61) at the front of the instrument body (1). Further, as shown in FIG. 3, the flanges 43 and 43 bent from both side surfaces of the control box 61 are detachably attached to the instrument body 1 with screws 42 and 42. .
[0036]
Further, the vicinity of the front end of the instrument body (1) of the combustion monitoring sensor (31) is located in the air supply box (44), and the air supply box (44) is provided with screws (40 ) To the instrument body (1). In addition, the antifouling guard (103) (which prevents boiled food from adhering to the combustion monitoring sensor (31)) fixed to the top plate of the control box (61) with screws (104) is a combustion monitor. It is in a state of protruding to the upper area of the sensor (31). Therefore, when the screw (104) is loosened, the dirt prevention guard (103) is removed, and the second heat plate (27b) is removed, the tip of the combustion monitoring sensor (31) and the presser spring that presses it against the sensor support box (500) The arrangement part (79) is exposed. Further, when the control box (61) in front of the instrument body (1) is removed and the screw (40) is loosened to remove the air supply box (44), the vicinity of the rear part of the combustion monitoring sensor (31) is exposed. In this case, when the antifouling guard (103) protruding above the tip of the combustion monitoring sensor (31) is removed or when the air supply box (44) is removed, the combustion monitoring sensor (31) is exposed, and Since repair inspection can be performed, repair inspection is easier than when the combustion monitoring sensor (31) is disposed near the downstream end of the first burner pipe (210) (near the rear side of the instrument body (1)). When only one combustion monitoring sensor (31) is provided for the first burner pipe (210) and the second burner pipe (211), the combustion monitoring sensor (31) is provided for each burner pipe. Compared to the above, the required number of the combustion monitoring sensors (31) is reduced.
[About the gas burner for upper fire (3)]
A so-called ceramic burner having a combustion surface formed of a ceramic plate is employed as the upper-fire gas burner (3) (3) disposed above the heating chamber (16). And, the upper fire gas burner (3) (3) is provided in two sets in the horizontal direction in three rows in the longitudinal direction of the appliance, and each set of the upper fire gas burners (3) (3) It faces the lower fire devices (A) and (B) for the lower fire arranged below the grill net (11) from above.
[About the water tray (41)]
A handle (41a) is provided on the front surface of the water pan (41) (41) disposed below the burner unit for lower fire (2) (2) described above, and the water pan (41) (41) is configured so that it can be freely pulled out in the front-rear direction with respect to the instrument body (1).
[Operation section]
On the front face of the control box (61), there are operation parts (62) and (62) spaced apart from each other on the left and right, and one operation part (62) is located on the left side of the lower heating device (A) and above it. Corresponding to the upper fire gas burner (3) (3) (3) arranged in three rows before and after, the other operation part (62) is the right lower fire device (B) and the upper fire gas burner (3 ) (3) Corresponds to (3).
[0037]
Each operation unit (62) and (62) has six upper gas burners (3), (3), and (3) that are operated to ignite and extinguish them in units of three (left and right groups). A switch (71), a high fire switch (72) and a low fire switch (73) for setting the heating power of the upper fire gas burner (3) (3) (3), and a left lower fire device (A) or a right lower fire device There are provided a low fire operation switch (76) for operating when (B) is ignited and extinguished, and a high fire switch (77) and a low fire switch (78) for setting these fire powers.
[0038]
Also, in the vicinity of the upper fire operation switch (71) and the lower fire operation switch (76), the timer knob (81) that is rotated when performing the timer cooking for baking the food for the set time and the timer set time are displayed. A timer indicator (82) is provided. Note that the timer knob (81) and the timer indicator (82) of the left operation unit (62) are not shown in FIG.
[Control circuit]
The gas circuit to each gas burner and the like is configured as shown in FIG. 4, and the controller (84) and (84) for controlling them are electrically connected to the above-mentioned upper fire operation switch (71) and high fire switch (72). It is connected. One control device (84) controls the left side lower heating device (A) and the upper heating gas burner (3) (3) (3) above, and the other control device (84) is the other right side It controls the lower-fire device (B) and the upper-fire gas burner (3), (3) and (3) above it, and both these circuits have the same configuration. In addition, the gas circuit connected to the left-side lower-fire device (A) and the upper-side gas burner (3), (3), and (3) above the left-side lower-fire device (B) and the upper-side gas The gas circuits connected to the gas burner (3), (3) and (3) have the same circuit configuration, and these gas circuits are branched from a common main gas circuit (53). Therefore, in the following, the left side lower-fire device (A) and the corresponding upper-fire gas burner (3), (3), and (3) will be mainly described.
[0039]
As described above, the first and second burner pipes (210) and (211) of the lower fire burner unit (2) (2) constituting the left lower fire device (A) are connected to the gas distribution pipe (33). Gas is supplied, and the proportional solenoid valve (36) inserted upstream of the gas distribution pipe (33) is inserted into the first branch circuit (54) branched from the main gas circuit (53). Has been. A pilot circuit (55) for lowering fire is inserted into the pilot circuit (55) branched from the downstream of the proportional solenoid valve (36).
[0040]
Also, in the second branch circuit (58) branched from the main gas circuit (53), the three upper burner gas burners (3), (3) and (3) corresponding to the left lower burner (A) are bundled. Proportional solenoid valve (66) that supplies gas is installed, and compared to the case where proportional solenoid valves (66) (66) are separately provided for the upper-fire gas burner (3) (3) (3). Therefore, a structure that can reduce the required number of valves is employed. The pilot circuit (56) branching from the downstream side of the proportional solenoid valve (66) is inserted with a pilot valve (67) for the upper fire, and each upper fire gas burner (3) (3) from the downstream side. The three circuits branched to (3) are provided with pilot burners (39), (39) and (39) for upper fire.
[0041]
Flame detectors (38), (38), and (38) are disposed at the downstream ends of the above-mentioned gas burners (3), (3), and (3), and the flame detectors (38) (38) The output of (38) is monitored by the control device (84). Also, a combustion monitoring sensor (31) (31) disposed near the upstream end of the second burner pipes (211) (211) constituting the lower burner unit (2) (2) of the left lower fire device (A). The output of 31) is also monitored by the control device (84), and the proportional solenoid valves (66), (67), (36), (57) are controlled by the output of the control device (84). In addition, the control device (84) includes an above-described upper-fire operation switch (71) disposed in the operation unit (62) on the front surface of the instrument body (1) as shown in FIG. It is connected.
[0042]
In this way, the pilot burner (3) (3) for burning the lower fire burner unit (2) (2) and the upper fire gas burner (3) (3) (3) above the left lower fire device (A) 24) (39) and proportional solenoid valves (36) (66) are controlled individually by the control device (84), but the right side lower fire device (B) and the upper fire gas burner (3) (3) (3) (3) The control device is also controlled by another control device (84). Therefore, the left-side lower-fire device (A) and the upper-side gas burner (3) (3) (3) above and the right-side lower-fire device (B) and the upper-side gas burner (3) (3) (3) ( Since 3) can be controlled separately, combustion according to the type and amount of food can be performed.
[About the actual cooking operation]
Next, the operation of the cooking device will be described.
[0043]
After placing the food on the grill (11) in the heating chamber (16), close the door (97) and turn on the lower heat operation switch (76), the above high fire switch (77) or low fire switch (78) The proportional solenoid valve (36) for lowering fire is adjusted to the opening corresponding to the heating power selected in (5), and the pilot valve (57) for lowering fire is opened, so that the burner unit for lowering fire ( 2) Gas is supplied to the first and second burner pipes (210) (211) and the pilot burner (24) constituting (2). In addition, the air supply fan (46) rotates to supply combustion air to the primary air supply holes (200) (200) at the upstream ends of the first and second burner pipes (210) (211). Then, a mixed gas of the combustion air and the gas supplied from the proportional solenoid valve (36) is discharged from the flame holes (28) (28) of the first and second burner pipes (210) (211). Then, the ignition electrode (40) is activated and the pilot burner (24) is burned. Then, the pilot fire formed in the pilot burner (24) is distributed to the adjacent first burner pipes (210) (210) by the pilot fire guide (23) shown in FIG. A flame is formed in the pipes (210) and (210). Then, the flame moves while moving through the flame holes (28) and (28) of the first burner pipes (210) and (210) toward the downstream side (opposite side of the nozzle (34)). When the downstream end of the burner pipe (210) is reached, the flame hole (28) (28) (fire transfer located at the downstream end of the second burner pipe (211) (211) through the inside of the fire transfer box (29) Flame hole (28) formed near the upstream (nozzle (34)) end of the second burner pipe (211) (211) Then, the flames are sequentially transferred to (28), whereby a flame is formed in the entire flame holes (28) and (28) of the first and second burner pipes (210) and (211). The combustion monitoring sensor (31) (31) (disposed near the upstream (gas nozzle (34)) end of the second burner pipe (211) indicates that the lower fire burner unit (2) has combusted as a whole. Detected at 31). When the first and second burner pipes (210) (211) burn, the first and second hot plates (27a) and (27b) are heated red by the flame, and the first and second hot plates (27a) ) The food material to be heated on the grill (11) is baked by the radiant heat from (27b).
[0044]
In this case, the first burner pipe (210) and the second burner pipe (211) are separated from each other, and the gas discharged from each flame hole (28) (28) is the first and second hot plates (27a). ) Since it stays in the lower groove (20a) (20b) of (27b) and burns in the groove (20a) (20b), the second burner pipe is inserted from the middle of the first burner pipe (210). (211) It is possible to reliably prevent the fear of short-circuiting in the middle.
[0045]
Next, when the upper fire operation switch (71) is operated, the proportional solenoid valve (66) for upper fire is adjusted to open at the opening corresponding to the heating power selected by the high fire switch (72) or the low fire switch (73). At the same time, the pilot valve for the upper fire (67) is opened, and an ignition electrode (not shown) is operated to burn the pilot burners (39), (39) and (39) for the upper fire, and the gas burner for the upper fire (3 ) (3) It is ignited at (3). And the combustion state of these upper-fire gas burners (3) (3) (3) is monitored by the flame detectors (38), (38) and (38).
[0046]
When performing timer cooking to bake ingredients only for the set time, turn the timer knob (81) and set the time, then operate the upper fire operation switch (71), lower fire operation switch (76), etc. The remaining time until the timer cooking is finished is displayed on the timer indicator (82), and when the set time elapses, the proportional solenoid valves (36) (66) for lower and upper fires are closed and the cooking operation is started. Stop.
[0047]
Note that the left-side lower-fire device (A) and the corresponding upper-fire gas burner (3) (3) (3), and the right-side lower-fire device (B) and the corresponding upper-fire gas burner (3) (3) (3) (3) ) In (3), the same operation is executed by the same operation as described above.
Next, the work of repairing and inspecting the ignition device (25) such as the pilot burner (24) and the combustion monitoring sensor (31) as a flame detector will be described.
[0048]
When performing simple repairs and inspections, loosen the screws (104) that hold the antifouling guard (103) protruding above the combustion monitoring sensor (31) and loosen the antifouling guard (103) to the control box (103). 61), then remove the second hot plate (27b). Then, the tip of the combustion monitoring sensor (31) covered with the antifouling guard (103) and the second heat plate (27b), the presser spring (79) fixing the same, etc. are exposed. In this state, the presser spring (79) is loosened, the combustion monitoring sensor (31) is removed from the sensor support box (500), and a simple repair / inspection operation is performed. Further, when the antifouling guard (103) is removed, the front portion of the ignition device (25) is exposed below, thereby performing a simple repair and inspection operation of the ignition device (25).
[0049]
Next, repair and inspection work including electrical wiring and the like from the combustion monitoring sensor (31) and the ignition device (25) to a control circuit (not shown) in the control box (61) will be described.
In this case, the control box (61) is removed from the instrument body (1) by loosening the screws (42) (42). Then, the arrangement part of the ignition device (25) shown in FIG. 5 and the electrical wiring from the control circuit to the control circuit are exposed to the lower side of the air supply fan (46), so that the repair and inspection of the ignition device (25) can be performed. Yes. Next, when the air supply box (44) is removed by loosening the screw (40) as described above, the electrical wiring to the rear end of the combustion monitoring sensor (31) and the control circuit (not shown) is exposed. This makes it possible to repair and inspect the combustion monitoring sensor (31) including the electrical wiring.
[0050]
In this case, repair inspection of the combustion monitoring sensor (31) is performed by removing the antifouling guard (103) protruding above the combustion monitoring sensor (31), the control box (61) at the front of the instrument body (1), etc. Since the combustion monitoring sensor (31) is disposed in the vicinity of the rear part of the instrument body (1), it is difficult to carry out repair work due to the approach to the wall of the kitchen. Compared to the above, the combustion monitoring sensor (31) can be easily repaired and inspected. For the same reason, the repair and inspection of the ignition device (25) can be easily performed. That is, in this device, both the combustion monitoring sensor (31) and the igniter (25) can be repaired and inspected at one side of the instrument body (1) (the front part in the above embodiment). The repair and inspection work can be performed more easily than the conventional one described in 1) which is separated from the front part and the rear part. In particular, in the present embodiment, since the combustion monitoring sensor (31) and the like are provided on the front side which is the operation unit side of the instrument body (1), the repair and inspection work can be performed more easily.
[0051]
In particular, in the case where the food material to be heated is heated from above and below as in the present embodiment, if the combustion monitoring sensor (31) or the like is on the rear side of the instrument body (1), the gas burner (3) ( 3) gets in the way and makes it difficult to repair and inspect the combustion monitoring sensor (31). Therefore, in such a type, it is particularly meaningful to employ the above-described configuration in which the combustion monitoring sensor (31) is provided at the front of the instrument.
[0052]
Moreover, in the said embodiment, it is also possible to put a foodstuff in the heat-resistant container which is a to-be-heated object, and to boil this only with a fire.
[Modification]
(1) FIG. 7 shows the use of a curved U-shaped pipe (85). One of the first straight portions (850) of the U-shaped pipe (85) is connected to the first burner pipe (210 ) And the other second straight portion (851) corresponds to the second burner pipe (211). An ignition device (25) and a combustion monitoring sensor (31) are respectively provided on the non-connecting portion side that is not the connecting portion side between the first straight portion (850) and the second straight portion (851), and the first straight portion A group of flame holes (28) and (28) is provided at an upper portion of the portion (850) at an interval where the flames are transferred to each other, and this is a flame hole forward path. In addition, flame holes (28) and (28) groups are also provided at the upper part of the second straight line portion (851) at an interval where they are transferred to each other, and this is a flame hole return path.
[0053]
In addition, the connecting portion (213) that connects the ends of the first and second straight portions (850) and (851) has a fire lined up in the direction connecting the first and second straight portions (850) and (851). A transfer flame hole (28) (28) group is formed. Accordingly, in this case, the connecting portion (213) having the above-described flame holes (28) and (28) group serves as a fire transfer device. Above the U-shaped pipe (85) is provided a semi-cylindrical hot plate (87) that is curved in the same planar shape as the U-shaped pipe (85) and is convexly curved upward. It has been. The hot plate (87) may be divided into three parts so as to correspond to the first straight part (850), the second straight part (851), and the connecting part (213), respectively, from above. Further, a gap similar to that of the above-described embodiment is formed between the U-shaped pipe (85) and the hot plate (87).
[0054]
In this embodiment, the first and second burner pipes (210) (211) and the like are formed by using a U-shaped pipe (85), and the embodiment shown in FIGS. It has the same composition as.
In this device, the combustion monitoring sensor (31) and the ignition device (25) are disposed in the vicinity of both ends of the U-shaped pipe (85) which is the front side of the instrument body (1). By performing the same operation as that shown in FIG. 6, it is possible to easily repair and inspect the combustion monitoring sensor (31) and the ignition device (25). In addition, since a single U-shaped pipe is used in this case, the structure is compared with a case where two independent first and second burner pipes (210) and (211) are combined as in the embodiment described above. Can be simplified.
[0055]
The nozzle (34) is provided at the end of the first and second straight portions (850) (851) on the non-connecting side as shown in the example, but for example, the non-connected portion of the second straight portion (851) is provided. The end portion on the connecting portion side may be closed and the nozzle (34) may be provided only at the end portion on the non-connecting portion side of the first straight portion (850), or the first and second straight portions (850) ( 851) may be closed, and the nozzle (34) may be inserted into the connecting portion (213) as shown by an imaginary line.
[0056]
(2) The one shown in FIG. 8 and FIG. 9 is a flame hole (28) (28) that forms a flame hole forward path, a flame hole return path, and a fire transfer device on the outer peripheral upper surface of one linear burner pipe (91). These flame hole groups (28) and (28) are arranged in a line so that the plane view is U-shaped as a whole.
A hot plate (93) as shown in FIG. 9 is provided above the burner pipe (91), and a partition plate (94) is provided at the center in the width direction of the lower surface of the hot plate (93). It is drooping. Further, the partition plate (94) is provided with the flame holes (28) and (28) for transferring the fire side by side at the downstream end of the burner pipe (91) (formation of the flame holes (28) and (28)). The concavity of both sides of the partition plate (94) on the lower surface of the hot plate (93) opens downward, except for the formation portion of the heat transfer device). The gas discharged from the left and right flame holes (28), (28) in FIG. 9 is a groove (96) (96) (96) (96). 96). The partition plate (94) eliminates the risk of short-circuiting the gas from the flame hole in the flame hole return path due to the flame in the flame hole forward path.
[0057]
In this case as well, since the ignition device (25) and the combustion monitoring sensor (31) are both disposed on one end side of the burner pipe (91), the combustion monitoring sensor ( 31) and ignition device (25) can be repaired and inspected.
(3) In the above-described embodiment, the primary supply for combustion is forcibly supplied by the supply fan (46). However, a natural supply type that does not include the supply fan (46) is also described. good. In addition, the present invention can be applied even if a hot plate is not provided above each flame hole (28) (28) group.
[Brief description of the drawings]
FIG. 1 is a front view of a partially cutaway cooker according to an embodiment of the present invention.
2 is a cross-sectional view taken along the line II-II in FIG.
3 is a sectional view taken along line III-III in FIG.
4 is an explanatory diagram of a gas circuit and a control circuit of the cooking device of FIG. 1. FIG.
FIG. 5 is a detailed view of the vicinity of the portion where the combustion monitoring sensor (31) is disposed.
FIG. 6 is an explanatory view of a combustion monitoring sensor (31) and a mounting portion of a hot plate.
FIG. 7 is an explanatory diagram of a modified example in which the first and second burner pipes (210) (211) and the like are configured using a U-shaped pipe (85).
FIG. 8 is a diagram for explaining a case where a single linear burner pipe (91) is used.
9 is a cross-sectional view of the burner pipe (91) and the hot plate (93) above it appearing in FIG.
FIG. 10 is an explanatory diagram of a conventional example.
FIG. 11 is an explanatory diagram of a conventional example.
[Explanation of symbols]
(1) ... Appliance body
(25) ・ ・ ・ Adding equipment
(27a) ... 1st hot plate
(27b) ・ ・ ・ Second hot plate
(28) ・ ・ ・ Flame hole
(31) ... Combustion monitoring sensor
(210) ... 1st burner pipe
(211) ・ ・ ・ Second burner pipe

Claims (3)

A gas burner that extends to connect the front side and the rear side of the instrument body (1) and heats an object to be heated;
Combustion monitoring sensor (31) and ignition device (25) disposed in the vicinity of the front end of the gas burner,
A flame hole forward path composed of a flame hole group formed in the gas burner in an arrangement manner that sequentially moves from the ignition device (25) side toward the rear side ,
A flame hole return path composed of a flame hole group formed in the gas burner in an arrangement manner in which the fire is sequentially transferred from the rear side toward the combustion monitoring sensor (31) side,
A flame transfer device for transferring the flame from the flame hole at the downstream end of the flame hole forward path to the flame hole at the upstream end of the flame hole return path ;
The combustion portion of the part and the ignition device of the monitoring sensor (31) (25), cooker present inside the operating portion of the instrument operation (62) is provided a removable control box (61). The gas burner is
A first burner pipe having a flame hole group forming the flame hole outward path;
A second burner pipe comprising a flame hole group forming the flame hole return path;
The cooking device according to claim 1, comprising the fire transfer device . The gas burner is formed of a single straight burner pipe,
In the one burner pipe,
A flame hole group constituting the flame hole outward path;
Flame hole group constituting the flame hole return path;
A group of flame holes constituting the fire transfer device connecting these,
It is formed to line up in a U shape as a whole,
Above the burner pipe, a hot plate having an arc-shaped cross section extending in the same direction as the burner pipe and having a raised central portion in the width direction is provided, and on the lower surface of the hot plate, A partition plate (94) hanging down between the flame hole forward path and the flame hole return path is projected ,
The cooker according to claim 1, wherein the partition plate (94) is present in a range that does not reach a formation area of a flame hole group arranged in the U-shaped tip folding area .

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