JP3937584B2 - Cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cooking device provided with a microwave and an electric heating means.
[0002]
[Prior art]
In an oven or a microwave oven with a grill belonging to a high-frequency heating device with an electric heating device, higher value-added functions are being promoted, and higher heating power is also being promoted for electric heating device functions. Increasing the thermal power of the electric heating device while increasing the function in this way increases the number of parts and makes the structure in the equipment complicated, and raises the problem of whether to sacrifice some other function or performance. come. For example, there is a conflicting problem that high thermal power cannot be achieved if importance is given to cooling of parts. In particular, in an oven or grill range where the heating chamber is at a high temperature, oily smoke and odor are likely to be generated, and the purification device requires a large purification area and a large thermal power for operating the device. High added value and thermal power are important issues, and the selection of the overall basic design concept and concept at that time is an important factor. In order to solve this problem, a means for purifying or removing oil smoke or the like described later has been performed.
[0003]
Conventionally, as shown in FIGS. 5 and 6, this type of cooking device is provided with an exhaust air inlet 2 on the upper side wall surface of the heating chamber 1, and the exhaust air inlet 2 has an exhaust configured in a chimney or duct shape. The exhaust purifier 4, the exhaust fan 5, and the motor 6 are connected to the passage 3 and downstream thereof so as to communicate with the exhaust port 8 provided in the exterior 7, and separated from the upper wall surface of the heating chamber 1. Is done. On the other hand, heating means 9 and 10 are provided on the upper and lower outer walls of the heating chamber 1, and the microwaves irradiated from the magnetron 11 are fed through the waveguide 12 to the power supply port 13 provided on the upper inner wall of the heating chamber 1. It is the composition which is irradiated more. Reference numeral 14 denotes a food, which is mounted on a turntable 17 or a rotating net mounted on a drive shaft 16 connected to a drive motor 15 and rotates. 18 is an openable / closable door, and 19 is an operation panel of the heating device.
[0004]
In the above configuration, in order to operate the cooking device, if a predetermined setting is performed on the operation panel 19, the food 14 in the heating chamber 1 is irradiated with microwaves from the power feeding port 13, and heated from the skin and the inner surface. The upper and lower wall surfaces of the heating chamber 1 are heated to a high temperature by the electric heating means 9 and 10 and heated from the upper and lower surfaces of the food material 14, and the food material 14 is cooked by both actions. During the process, depending on the cooking conditions, steam, odor, oily smoke, etc. are generated from the food 14. These generated products are sucked by the exhaust fan 5, processed by the exhaust filter 4, and discharged to the outside of the exterior 7 through the exhaust port 8.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, the exhaust purifier 4 has no heating means and is arranged away from the wall surface of the heating chamber 1, so that the heat of the heating chamber 1 heated to a high temperature is Since heat transfer from the wall surface of the chamber 1 through the exhaust passage 3 to the exhaust purifier 4 is difficult, there has been a problem that the decomposition purification capacity of the exhaust purifier 4 composed of a catalyst cannot be expected sufficiently.
[0006]
Further, the exhaust passage 3 is configured in a chimney shape, the exhaust intake port 2 and the exhaust port 8 are open on both the heating chamber 1 side and the outside air side, and the position of the exhaust intake port 2, Since the passage 3 and the exhaust port 8 are positioned so as to be sequentially higher, if this configuration has a chimney action (natural draft action) and the heating chamber 1 is preheated to a certain cooking temperature, the heating chamber 1 The hot air inside was naturally exhausted little by little, increasing the current-carrying rate of the electric heating means 9 and 10 and resulting in a worse energy saving effect. Moreover, since the exhaust passage 3 having a high temperature is located transversely in the upper portion of the heating chamber 1 in the overall configuration as a heating cooker, many controls, small parts, etc. in a limited space. The degree of freedom related to the arrangement of the heating chamber 1 is limited, and in addition, the location of the control components and the like that are generally arranged in the upper part of the heating chamber 1 is limited, and it is difficult to secure the cooling passages. Had.
[0007]
[Means for Solving the Problems]
For the present invention to solve the above problems, a part of the side wall surface of the heating chamber is open, enter the part of the wall of the fume purifier in the opening portion, configured to also serve as the side wall surface of the heating chamber It is a thing.
[0008]
According to the above invention, when the oven is grilled and grilled, if the heating chamber is preheated to a predetermined temperature in advance, the entire heating chamber is heated to that temperature, and of course the oil smoke remover that is also used as the wall surface of the heating chamber. The side surface reaches the preheating temperature, and heat is transferred from the side surface to the catalyst body so that the catalyst body is heated to the same degree as the preheating temperature. Therefore, the catalyst body is always in a standby state in which the catalytic decomposition reaction can be performed at least with respect to the inflowing oil smoke and the like, and can effectively remove the oil smoke generated with the cooking operation. In addition, since the position of the exhaust port is lower than the position of the exhaust air intake port, the configuration of the exhaust passage has a kind of trapping action unless the exhaust fan operates, so that the natural draft action is greatly suppressed. As a result, the hot air in the heating chamber is less likely to be discharged from the exhaust port, and the energization rate of the electric heating means is suppressed, resulting in an energy saving effect and a large practical effect.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention includes a sheath fixed on a substrate, and arranged heating chamber within said exterior, a heating means disposed within said heating chamber, a waveguide for propagating the microwave in the heating chamber upper A power supply opening having an open end; and an oil smoke purifier provided between the inner wall surface of the exterior and the outer wall surface of the heating chamber . The oil smoke cleaner blocks microwaves in a part of the wall surface portion of the heating chamber. An exhaust air intake port provided with a punching hole, an exhaust air passage communicating with the exhaust air intake port, an oil smoke purification means disposed in the exhaust air air passage, a purification heating means for heating the exhaust air suction means, and an intake air exhaust means, A part of the wall surface portion of the heating chamber is configured as a part of the oil smoke purifier and is used for heating the oil smoke purification means .
[0010]
When the heating chamber is preheated to a predetermined temperature in advance, the entire heating chamber is heated to that temperature. Naturally, a part of the oil purifier, which is the wall surface of the heating chamber, reaches the preheating temperature, and heat is transferred from the part to the catalyst body so that the catalyst body is heated to the same degree as the preheating temperature. Therefore, the catalyst body is always in a standby state in which the catalytic decomposition reaction can be performed at least with respect to the incoming smoke and the like, and can effectively remove the smoke generated with the cooking operation.
[0011]
Even if the generated organic impurities such as oily smoke adhere to the exhaust air inlet, it is heated to a high temperature by the heating means so that it evaporates, disappears or falls along the heating chamber wall to the lower part of the heating chamber. There is almost no accumulation at the exhaust intake port, and there is no problem of raising the ventilation resistance of the exhaust intake fan.
[0012]
Also, an exhaust air inlet provided with a punching hole for blocking microwaves in a part of the upper wall surface of the heating chamber, an exhaust air passage for taking in hot air from the exhaust air inlet, and a heating means provided in a downstream area of the exhaust air passage In addition, an oil smoke purification means for purifying oil smoke and the like, an exhaust fan, and an exhaust port are sequentially provided, and the exhaust port is provided at a position lower than the arrangement position of the exhaust intake port.
[0013]
Then, the position of the exhaust air inlet, the position of the exhaust port is configured to be lower positional relationship, the configuration of an exhaust air passage as long as the exhaust fan is not operating, the natural draft effect because it has a kind of trap action Is greatly suppressed, and the hot air in the heating chamber is less likely to be discharged from the exhaust port, and the current-carrying rate of the electric heating means is suppressed, thus providing an energy saving effect.
[0014]
Further, a magnetron high-voltage power transformer or the like is arranged in the vicinity of the lower part of the self-cooling fan that cools the exhaust fan motor itself provided in the vicinity of the exhaust port of the oil smoke purifier.
[0015]
When the high-voltage power transformer is in operation, the temperature rises due to the heat generated by the transformer itself. Especially when the cooling is performed by the intake action of the cooling fan, the shape of the transformer is square, making it difficult for the air flow to flow smoothly. However, it is easy to generate an air retention area, and the cooling action is not sufficient. However, the rotation of the self-cooling fan of the exhaust fan causes the action of suppressing the air retention area and causes the cooling air to flow smoothly. Can be carried out effectively.
[0016]
Further, an exhaust air intake port provided with a punching hole for blocking microwaves in the upper portion of the heating chamber, and a heating means, an oil smoke purification means, and an exhaust air intake means are provided downstream of an exhaust air passage provided in communication with the exhaust air intake port. The oil smoke purifier having the above is bonded to the wall surface of the heating chamber.
[0017]
And even if it comprises the oil-smoke purifier of a structure different from a heating chamber, since it was mounted | worn so that it might join to a heating chamber wall surface, heat conduction of a heating chamber is fully performed.
[0018]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0019]
Example 1
1 is a front sectional view of a heating cooker according to a first embodiment of the present invention. FIG. 2 is a side sectional view of the main part of the cooking device, and FIG. 3 is a side view of the cooking device with the exterior thereof removed. In the figure, reference numeral 20 denotes a heating chamber for heating the food material 21. The heating chamber 20 is fixed on the substrate 22, and an exterior 23 covering the heating chamber 20 is also fixed to the base 22. Is provided. A door 26 provided with a handle 25 is provided on the front surface of the heating chamber 20 so as to be opened and closed. A ceramic rail 27 is detachably attached to the left and right wall surfaces of the heating chamber 20. A juice receiving tray 28 is provided in the lower part using the lug 27 as a guide, and a heat-resistant cooking net 29 on which food 21 is placed is detachably disposed. In the upper space of the heating chamber 20, a heating means 30 made of a seed heater or a miraclon heater or the like, and a similar heating means 31 are disposed and fixed at an intermediate portion between the juice tray 28 and the cooking net 29. The input terminal portion 32 protrudes leftward of the front surface and is fixed to the side wall surface of the heating chamber 20.
[0020]
A top plate 33 made of ceramic that transmits microwaves is attached to the top plate of the heating chamber 20 with a fixture 34. A feeding port 35 for irradiating microwaves into the heating chamber 20 is opened in the top plate portion of the heating chamber 20, and microwaves connected to a drive motor 36 are placed in the heating chamber 20 above the feeding port 35. A rotating antenna 37 that irradiates with good distribution is provided. Reference numeral 38 denotes a waveguide for supplying the microwave generated from the magnetron 39 into the rotating antenna 37 and the heating chamber 20. Reference numeral 40 denotes a cooling fan that cools the magnetron 39. Reference numeral 41 denotes a door ratchet section that opens and closes the main power supply at the door 26.
[0021]
In particular, in the configuration, the side wall surface of the heating chamber 20 is also used as a component of the oil smoke purifier 42, and the exhaust having a punching hole for blocking microwaves is provided above the side wall surface 43 of the heating chamber 20. An intake port 44 is provided, and an exhaust ventilation path 45 is formed by a rectangular case 47 so as to be connected to the exhaust intake port 44. Further, purification heating means 48 a made of miraclon heater is disposed downstream of the exhaust air passage 45 communicating with the exhaust air inlet 44, and further, the heat purification catalyst body 48 is disposed downstream of the exhaust air passage 45. An exhaust fan 50 connected to the drive motor 49 is disposed downstream of the exhaust motor 50. An exhaust port 51 is opened at the end of the exhaust air passage 45 and is mounted on a part of the exterior 23. Yes. The positional relationship between the height of the exhaust inlet 44 and the exhaust outlet 51 is configured such that the exhaust outlet 51 is lower than the exhaust inlet 44.
[0022]
A self-cooling fan 52 for cooling the drive motor 49 and the bearing portion is provided at the end of the exhaust fan 50. 53 is a heat insulating material (indicated by a chain line) covering almost the entire area of the heating chamber 20.
[0023]
Next, the operation will be described. The foodstuff 20 placed on the cooking net 29 in the heating chamber 20 is operated by operating the operation panel 24. First, the magnetron 39 transmits microwaves through the waveguide 38, the rotating antenna 37, and the feeding port 35. It is irradiated inside and heated from the skin or inside of the food material 21. In addition, the heating means 30 and 31 disposed above and below the heating chamber 20 heat the upper and lower surfaces of the food material 21 and finish the cooking with a scorching finish. Thus, as the cooking process proceeds, the temperature of the food 21 rises as a whole, and finally the moisture inside the food 21 starts to evaporate. Then, a smell peculiar to the food 21 itself is generated, and particularly when the evaporated moisture in the skin portion decreases, the skin is reduced. In the part, baking begins and oil and smoke are generated. These organic substances act to sufficiently preheat the heat purification catalyst body 48 of the oil smoke purifier 42 that has received the heat of the heating chamber 20 heated to a high temperature. In addition, the suction and heating action of the exhaust fan 49 and the purification heating means 48a, which are operated in parallel with the cooking, are sucked into the exhaust air passage 45 and further heated, and the heat of the purification heating means 48a is received and oxidized. Purified. Therefore, oily smoke and the like are almost purified and discharged from the exhaust port 51 as smokeless exhaust gas. In this way, since one surface of the oil smoke purifier 42 is also used as a component of the heating chamber 20, it is heated to the same temperature as the preheating temperature of the heating chamber 20. Since the heat purification catalyst body 48 is constantly maintained at a temperature at which at least oily smoke can be purified, the heat purification catalyst body 48 can rise quickly and further accelerate the purification action when the purification heating means 48a is energized. There are some practical effects such as reducing the energization rate of the purification heating means 48a and not reducing the heating power of the heating means 30 and 31 in the heating chamber 20. Further, a reduction in the energization rate of the purification heating means 48a is a significant energy saving effect.
[0024]
(Example 2)
FIG. 2 is a sectional side view of a main part of the heating cooker according to the second embodiment of the present invention. The difference from the first embodiment is that the height arrangement of the exhaust port 51 is arranged lower than the height position of the exhaust air intake port 44.
[0025]
Next, the operation and action will be described. Since it is configured as described above, the exhaust vent passage 45 has a kind of trapping action thermally. That is, when the heating chamber 20 is preheated to a high temperature, the hot air in the heating chamber 20 does not flow out into the chimney of the exhaust vent 45 toward the exhaust port 51 due to a draft action. The preheating temperature in 20 is stably controlled, and the energization rates of the heating means 30 and 31 and the purification heating means 48a in the heating chamber 20 become lower, and the high heating power of the heating means 30 and 31 as well as the energy saving effect. High thermal power can be maintained in spite of high addition with an oil smoke purification function without lowering the temperature.
[0026]
(Example 3)
FIG. 1 is a front sectional view of a heating cooker according to a third embodiment of the present invention. The difference from the first embodiment is that the exhaust air inlet 44 is composed of a punching plate provided with a small hole for blocking the microwave irradiated into the heating chamber 20, and is opposed to or closest to the small hole. The purification heating means 48a is disposed in the vicinity.
[0027]
Next, the operation and action will be described. Steam, oil droplets, oily smoke, high-temperature food substances, etc. that scatter from the food material 21 generated during cooking adhere to the small holes of the exhaust air inlet 44, thereby closing the small holes. Although the ventilation resistance is increased and finally the generated smoke or the like cannot be purified and removed, since the purification heating means 48a is disposed opposite or closest thereto, the adhering adhered substance is caused by the high temperature radiation of the purification heating means 48a. Since it is heated to a high temperature, it evaporates, disappears, or falls to the lower part of the heating chamber along the heating chamber wall and hardly accumulates in the exhaust air inlet 44, increasing the ventilation resistance of the exhaust fan 50. There is no such problem.
[0028]
Example 4
FIG. 3: is a principal part side view which removed the exterior of the heating cooker of the heating cooker of Example 4 of this invention. The difference from the first embodiment is that a high-voltage power transformer 54 is provided in the vicinity of the self-cooling fan 52 attached to the end of the exhaust fan 50.
[0029]
Next, the operation and action will be described. As the cooking starts, the temperature of the high-voltage power transformer 54 rises due to the heat generated by the transformer 54. In particular, when cooling is performed by the intake action of the cooling fan 40, the shape of the transformer 54 is square, so a smooth air current is generated. less likely to flow, the cooling effect of air stagnation zone likely to occur is not sufficient, the effect of suppressing the air stagnation zone by the rotation of the self-cooled fan 52 is caused of the exhaust fan 50 cooling air Sum - to flow in FIG. Therefore, the transformer 54 can be effectively cooled.
[0030]
(Example 5)
FIG. 4: is principal part sectional drawing of the oil smoke purifier of the heating cooker of the heating cooker of Example 5 of this invention. The difference from the first embodiment is that the oil smoke purifier 42 of the heating cooker is configured separately from the side wall surface 20 of the heating chamber, and this oil smoke removing unit is used as the exhaust air inlet 44 of the heating chamber 20. Correspondingly, a mounting tool such as a screw (not shown) is attached so that the oil smoke removing unit 55 is in close contact with the side wall surface of the heating chamber 20. At this time, it is effective to apply and attach an adhesive member such as a silicon material having a good heat conductivity and a heat resistance or a heat conductive seal material to the contacted portion.
[0031]
Next, the operation and action will be described. Even if the oil smoke purifier 42 is configured separately from the heating chamber 20, since it is mounted so as to be joined to the wall surface of the heating chamber, the heat conduction of the heating chamber 20 is sufficiently performed. .
[0032]
【The invention's effect】
According to the present invention as described above, the outer fixed to the substrate, and pressurized heat chamber disposed within the outer, heating means disposed in the heating chamber, the microwave in the heating chamber upper A power supply opening having an opening at the front end of the propagating waveguide; and an oil smoke purifier provided between the inner wall surface of the exterior and the outer wall surface of the heating chamber. The oil smoke purifier is a wall surface portion of the heating chamber. Exhaust air intake port provided with a punching hole for blocking microwaves in the section, an exhaust air passage communicating with the exhaust air intake port, oil smoke purification means disposed in the exhaust air passage, purification heating means for heating the air and intake air exhaust means Further, a part of the wall surface portion of the heating chamber is configured as a part of the oil smoke purifier, and is used for heating the oil smoke purification means . If the heating chamber is preheated to a predetermined temperature, Chamber whole is heated at that temperature, a portion of the oil smoke purifier which also serves as a part was the heating chamber also reaches the preheating temperature, the thermal conductivity is smoke purifier itself preheating temperature equal approximately to the oil smoke purification means from a portion To be heated. Therefore, the oil smoke purification means is always in a standby state in which the catalytic decomposition reaction can be performed at least for the incoming oil smoke and the like, and can effectively purify and remove the oil smoke generated with cooking.
[0033]
In addition, since the position of the exhaust port is lower than the position of the exhaust air intake port, the configuration of the exhaust air passage has a kind of trapping action thermally unless the exhaust fan operates, so the natural drafting action is not It is greatly suppressed, and the hot air in the heating chamber is hardly discharged from the exhaust port, and the energization rate of the electric heating means is suppressed, resulting in an energy saving effect.
[0034]
In addition, an oil smoke purifier is provided on the side wall of the heating chamber so that heating means provided opposite to the exhaust air intake or as close to the inside as possible is provided on the side wall of the heating chamber, so that organic impurities such as generated oil smoke adhere to the exhaust air intake. However, since it is heated to a high temperature by the heating means provided opposite to the exhaust intake port, it evaporates, disappears, or falls along the heating chamber wall to the lower part of the heating chamber and accumulates on the exhaust intake port. There is almost nothing, and the ventilation resistance of the exhaust intake fan is not increased.
[0035]
In addition, a magnetron high-voltage power transformer is installed near the lower part of the self-cooling fan that cools the exhaust fan motor itself provided near the exhaust port of the oil purifier. Although the temperature rises due to the heat generated by the transformer itself, when cooling by the intake action of the cooling fan, the transformer has a square shape, so it is difficult to generate a smooth air flow, and it is easy to generate an air retention area. action but is not sufficient, the cooling air effect of suppressing the air stagnation zone occurs in the rotation of the self-cooled fan exhaust fan Sum - in order to to flow's, it is possible to perform the transformer cooling effectively .
[0036]
In addition, a power supply opening that opens the tip of a waveguide that propagates microwaves from the magnetron in the upper part of the heating chamber, an exhaust air intake that is provided with a punching hole that cuts off the microwaves, and an exhaust that is provided in communication with the exhaust air intake Since the oil smoke purifier having the heating means, the oil smoke purification means, and the exhaust air intake means downstream of the air passage is joined and mounted to the other side wall surface portion of the heating chamber, the oil smoke purifier having a configuration different from that of the heating chamber. Even if it comprises, since it mounted | worn so that it might join to a heating chamber wall surface, since heat conduction of a heating chamber is fully performed, the effect more than a prior art example is anticipated.
[Brief description of the drawings]
FIG. 1 is a front cross-sectional view of a heating cooker according to a first embodiment of the present invention. FIG. 2 is a side sectional view of a main portion of the heating cooker according to the second embodiment. Fig. 4 is a partial cross-sectional view of a main part of an oil smoke remover of a heating cooker in Example 4. Fig. 5 is a cross-sectional view of a main portion of a conventional heating cooker. Cross section of the main part of the cooker [Explanation of symbols]
DESCRIPTION OF SYMBOLS 20 Heating chamber 22 Substrate 23 Exterior 30, 31 Heating means 35 Power supply port 39 Magnetron 42 Smoke purifier 44 Exhaust air inlet 45 Exhaust air passage 48 Thermal purification catalyst body 48a

Claims (4)

An exterior fixed on a substrate, a heating chamber disposed in the exterior, heating means disposed in the heating chamber, and a power supply having an opening at the top of a waveguide that propagates microwaves above the heating chamber And an oil smoke purifier provided between the inner wall surface of the exterior and the outer wall surface of the heating chamber, and the oil smoke cleaner has a punching hole for blocking microwaves in a part of the wall surface portion of the heating chamber. An exhaust air passage that communicates with the exhaust air inlet, an oil smoke purification means that is disposed in the exhaust air passage, a purification heating means that heats the exhaust air suction means, and an intake exhaust means, and a wall surface of the heating chamber A cooking device in which a part of the part is configured as a part of the oil smoke purifier and is used for heating the oil smoke purification means . An exhaust air inlet provided with a punching hole for blocking microwaves in the upper wall surface of the heating chamber, an exhaust air passage for drawing in hot air from the heating chamber from the exhaust air inlet, and a purification provided in a downstream area of the exhaust air passage The heating cooking according to claim 1, wherein a heating means, an oil smoke purification means for removing oil smoke, an exhaust fan, and an exhaust port are sequentially provided, and the exhaust port is provided at a position lower than a position where the exhaust intake port is disposed. vessel. 3. A heating cooker according to claim 1, wherein a magnetron high-voltage power transformer is disposed in the vicinity of a self-cooling fan for cooling the exhaust fan motor provided in the vicinity of the exhaust port of the oil smoke purifier. An exhaust smoke inlet provided with a punching hole for blocking microwaves at the upper part of the heating chamber, and an oil smoke purifier is attached to the outer wall surface of the heating chamber downstream of an exhaust air passage provided in communication with the exhaust air inlet. The cooking device according to any one of claims 1, 2, and 3.

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