JP6913522B2 - Cooker - Google Patents

Description

The present invention relates to a cooking cooker, particularly a cooking cooker having a heating chamber in which a door is openably and closably attached to a front opening portion.

In a heating cooker equipped with a heating chamber that heats an object to be heated using steam or hot air, for example, the combustion exhaust (hot air) generated by burning gas is circulated in the chamber by a circulation fan to be heated. Some things are cooked.
In the case of a commercial oven or a cooker used as a grill used in a kitchen of a hotel or restaurant, the amount of hot air convected into a large heating chamber during heating increases, and as a result, the inside of the heating chamber becomes hot. Not only that, a considerable amount of heat propagates to the door that can be opened and closed at the front opening of the heating chamber. When the temperature of the door becomes high, the operator feels uncomfortable when he / she carelessly touches the hot door, and the heat from the door makes the whole kitchen hot, which causes deterioration of the working environment.

In order to lower the temperature of the door of the heating chamber, as shown in FIG. 5, the door (4) has a double structure of a front plate (41) and a back plate (42), and these front and back plates (41) ( There is a configuration in which a space portion (43) in which the opening (40) opens is provided below between 42). In this case, the surface temperature of the door (4) is reduced by taking in the external cooling air from the opening (40) into the space (43) by the circulation fan (46), and the inside of the kitchen The temperature rise is also suppressed.

Jitsukaisho 50-52551 Japanese Unexamined Patent Publication No. 2005-300053

However, in the above-mentioned conventional one, since the space portion (43) in the door (4) and the inside of the heating chamber (44) are configured to communicate with each other through the air outflow hole (45), the circulation fan ( The cooling air taken into the space (43) in the door by 46) flows into the heating chamber (44) through the air outflow hole (45), and the exhaust port (47) continuing from the heating chamber (44). Is discharged to the outside. In this way, the external cooling air enters the heating chamber (44) through the space (43) in the door (4), so that the temperature inside the heating chamber (44) drops, and the object to be heated (5) There is a problem that it affects the cookability of the door.

The present invention has been made in view of the above problems, and it is possible to reduce the temperature of the door blocking the front opening portion of the heating chamber without lowering the temperature inside the heating chamber during cooking. An object of the present invention is to provide a possible heating cooker.

The cooking cooker according to the present invention
A heating cabinet where foodstuffs and other objects to be heated are stored and heated,
A door that can open and close the front opening of the heating chamber,
It is provided with an exhaust port that communicates with the rear region of the heating chamber via an exhaust flow path and exhausts the air in the heating chamber to the outside.
An air flow path is provided above the heating chamber so that the rear opening portion communicates with or is close to the exhaust flow path.
Above the air flow path, an operation chamber in which an operation unit and an air suction port are arranged side by side is arranged on the front surface.
Behind the operation chamber, an air exhaust port for exhausting air in the operation chamber is communicated with the exhaust port.
Blower fans for sending air to the exhaust port are provided in each of the operation chamber and the rear area of the heating chamber.
The door is provided with a first cooling space between the first and second door plates located in the front and rear.
The first cooling space has a first air inlet communicating with the outside to the upstream end, and those having a first air outlet port communicating with the air flow path to the downstream end.

The above means operate as follows.
When the object to be heated stored in the heating chamber is heated by hot air, the oily smoke and odor generated from the heated object are discharged to the outside from the exhaust port at the rear of the heating chamber together with the hot air through the exhaust flow path. An air flow path is provided above the heating chamber, and this air flow path communicates with the first cooling space between the first and second door plates constituting the door, and the rear opening portion is an exhaust flow path. Due to the draft effect of the hot air flowing from the heating chamber to the exhaust port through the exhaust flow path, an air flow toward the rear opening is also generated in the air flow path. 1. External cooling air is drawn into the first cooling space from the first air inlet at the upstream end of the first cooling space between the second door plates, and the first air flow passes through the first cooling space. It flows from the outlet to the air flow path.
In this way, due to the draft effect when the hot air in the heating chamber is discharged from the exhaust port, the external cooling air flows in the first cooling space between the first and second door plates constituting the door. Since the air flow path communicating with the first cooling space via the first air outlet is separately provided above the heating chamber, the cooling air does not enter the heating chamber and is opened to the rear of the air flow path. It is discharged from the part to the outside. Therefore, the temperature of the door can be reduced without lowering the temperature inside the heating chamber with the cooling air.

The blower fan provided in the operation room promotes the flow of air from the front air suction port to the rear air exhaust port in the operation room, and the blower fan provided behind the heating chamber promotes the heating chamber. The flow of air from the inside to the exhaust port through the rear exhaust flow path is promoted. Since the rear opening of the air flow path is arranged so as to be close to or communicate with the air discharge port of the operation chamber and the exhaust flow path of the heating chamber, it is drafted by the air flow of the operation chamber and / or the heating chamber. The effect promotes the flow of air from the front open portion to the rear open portion in the air flow path. Guided by the air flow in the air flow path, the flow of cooling air from the first air inlet to the first air outlet in the first cooling space is also promoted, and the temperature of the door is lowered more reliably. Can be done.

In the heating cooker, preferably, the blower fan is set to be continuously driven for a certain period of time even after the cooking in the heating chamber is completed.
By continuously driving the blower fan even after the cooking in the heating chamber is completed, air continues to flow in the operation chamber and / or the heating chamber, and the first cooling space is also external. Cooling air will continue to flow. As a result, the temperature of the door after the completion of cooking can be cooled in a short time, and the safety is further improved.

In the heating cooker, preferably, the door is provided with a third door plate that forms a second cooling space behind the second door plate.
The upstream end of the second cooling space is a second air inlet that opens below the door together with the first air inlet of the first cooling space, and the downstream end is provided near the upper end of the second door plate. It is set to communicate with the first air outlet through the second air outlet.

In this case, the door is formed in a triple structure from the first, second, and third door plates, and the first cooling space between the first and second door plates is between the second and third door plates. The second cooling space is formed so as to be parallel to the front and rear. Both the upstream ends of the first and second cooling spaces are open below the door, and due to the draft effect, external cooling air is simultaneously taken into these first and second cooling spaces, and the first and second cooling spaces are taken in at the same time. Ascend each of the second cooling spaces. The cooling air that has risen in the second cooling space flows from the second air outlet at the downstream end into the air flow path through the first air outlet, and is exhausted from the air outlet behind the second air outlet. In this case, the first door plate located on the front side and most easily contacted by the operator is the third door plate, the second cooling space, and the second door plate that directly block the front opening portion of the high-temperature heating chamber. Furthermore, since the mode is located via the first cooling space, the heat propagation in the heating chamber to the first door plate is suppressed, and the operator does not feel uncomfortable even if the operator touches the surface of the door. .. In addition, since the kitchen does not get hot due to the heat from the door, a cool and comfortable working environment can be realized.

In the heating cooker, preferably, the first door plate is removable from the second door plate.
With long-term use, dirt such as oil adheres to the cooling space and its upstream end, but by removing the first door plate, it becomes easier to clean each door plate and the upstream opening portion. In particular, when each door plate is made of glass, removing the first door plate and cleaning it can prevent the transparency of the glass plate from decreasing due to dirt, so the inside of the heating chamber can be reliably visually recognized during heating. Can be done.

In the heating cooker of the present invention, the cooling air that reduces the temperature of the door flows in the first cooling space between the first and second door plates constituting the door, and then rises above the heating chamber with the heating chamber. Is configured to flow through a separately provided air flow path, so that cooling air does not flow into the heating chamber and the temperature inside the heating chamber does not drop carelessly. Therefore, the temperature of the door can be reduced while maintaining a predetermined temperature for cooking the object to be heated in the heating chamber.
As described above, since the temperature inside the heating chamber is not lowered, it is not necessary to separately heat the inside of the heating chamber to raise the temperature. Further, since the temperature of the door can be reduced, it is possible to prevent the inconvenience that the operator feels uncomfortable with the heat of the door even if the operator comes into contact with the door. Furthermore, since the heat from the door does not heat the entire kitchen, a cool and comfortable working environment can be realized, and there is no need to install air conditioning equipment to lower the temperature of the kitchen.
Further, since the cooling air for cooling the door is configured to flow into the first cooling space from the outside and flow to the air flow path due to the draft effect of the hot air flowing from the inside of the heating chamber to the exhaust port, the cooling air flows through the door. There is no need to provide a separate means for this.
Therefore, it is possible to provide a cooking cooker having excellent cookability, safety, and energy saving effect.

It is a front view of the cooking apparatus which concerns on embodiment of this invention. It is a schematic vertical partial sectional view of the cooking apparatus which concerns on 1st Embodiment of this invention. It is a schematic cross-sectional view which shows the front part of the operation part of the cooking apparatus which concerns on 1st Embodiment of this invention. It is a schematic vertical partial sectional view of the cooking apparatus which concerns on the 2nd Embodiment of this invention. It is explanatory drawing of the conventional cooking apparatus.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a front view of a cooking cooker according to an embodiment of the present invention. This is a convection type floor-standing commercial oven that utilizes the circulation of hot air. It is a front opening part (20) of a heating chamber (2), which will be described later, on the front of a rectangular box-shaped appliance body (100). ) Is closed so that it can be opened and closed, and an operation panel (32) having a digital display that can be ignited and extinguished with a single touch is arranged above the door (1). In addition, an exhaust port (10) is open behind the top surface of the instrument body (100).
In this embodiment, the depth direction when the instrument body (100) is viewed from the front side is referred to as the front-rear direction, the width direction is referred to as the left-right direction, and the height direction is referred to as the up-down direction.

FIG. 2 is a vertical sectional view of the commercial oven according to the first embodiment, in which the heating chamber (2) is a box body having a front opening portion (20), and is formed on both side walls (25) thereof. The support rails (29) for erection of the oven plate in a sliding manner in the front-rear direction are provided in parallel in a plurality of stages. Further behind the back wall (26), hot air from a gas burner (not shown) as a heating source is sent to a heating chamber (26a) through a blower hole (26a) provided in the back wall (26). A blower fan (24) is provided as a circulation fan for sending into 2) and convection.
The exhaust flow path (23) projects diagonally upward and backward behind the ceiling wall (27) of the heating chamber (2), and the downstream end (23a) of the exhaust flow path (23) is the appliance main body (100). It is configured to face the exhaust port (10) of.

An operation room (3) is arranged above the ceiling wall (27) via an air flow path (30).
An operation panel unit (32) is arranged on the front surface of the operation room (3), and inside the operation room (3), as shown in FIGS. 2 and 3, the back surface of the operation panel unit (32) is arranged. The operation board (36), various electrical components (37), and a pair of left and right blower fans (34) are housed. As shown in FIG. 1, a pair of air suction ports (33) are open near the left and right sides of the operation panel portion (32), and an exhaust port (10) is located at the rear end of the operation chamber (3). ) Is open.
When the blower fan (34) is driven, as shown by the arrow of the alternate long and short dash line in FIGS. Cooling air is taken into the operation chamber (3), flows through the operation chamber (3) toward the rear air exhaust port (35), and then discharges from the exhaust port (10) of the instrument body (100) to the rear outside. Will be done. As a result, the operation board (36) and other electrical components (37) in the operation room (3) are cooled by the external cooling air, and the operation room is heated during cooking in the heating chamber (2). It is possible to suppress the temperature rise in (3).

The rear opening portion (31) of the air flow path (30) provided between the heating chamber (2) and the operation chamber (3) is the exhaust flow path (23) of the heating chamber (2) described above. It is located close to each other in a manner sandwiched between the downstream end (23a) and the air exhaust port (35) of the operation room (3), and both are open so as to face the exhaust port (10). ..

As shown in FIG. 2, the door (1) to which the front opening portion (20) of the heating chamber (2) can be opened and closed is the first, second, and third door plates (11) which are overlapped in the front-rear direction. ) (12) (13), the first cooling space (21) is between the first and second door plates (11) and (12), and the second and third door plates (12). A second cooling space (22) is provided between (13) and (13), respectively.
The first, second, and third door plates (11), (12), and (13) are all transparent glass plates (11a) (12a) (13) in the window portion provided in the substantially central region of the stainless steel rectangular plate. 13a) is fitted, and the glass plates (12a) (13a) of the second and third door plates (12) (13) are changed from the glass plate (11a) of the first door plate (11). Through this, the inside of the heating chamber (2) can be confirmed.
The vicinity of the lower end of the door (1) is rotatably attached to a support shaft (14) provided on the instrument body (100) near the front opening (20), and the back surface of the door (1) is attached. A rectangular frame-shaped heat-resistant packing (15) is attached at a position of the third door plate (13) to be abutted against the peripheral edge of the front opening portion (20) of the heating chamber (2).

Further, the first door plate (11) constituting the surface of the door (1) is detachably attached to the second door plate (12) by a locking means (not shown), and the surface thereof. Both ends of the handle portion (16) long in the left-right direction are fixed near the upper end on the side. By pulling the handle (16) toward you, the door (1) can rotate 90 degrees forward with the support shaft (14) as the rotation fulcrum, as shown by the alternate long and short dash line in FIG. From the front opening (20) of 2), the oven plate on which foodstuffs etc. are placed can be taken in and out of the heating chamber (2).

The first cooling space (21) between the first door plate (11) and the second door plate (12), and the first between the second door plate (12) and the third door plate (13). 2. The first and second air inlets (21a) and (22a), which are open ends on the upstream side of the cooling space (22), are both open downward. The second cooling space (22) is configured to communicate with the first cooling space (21) via a second air outlet (22b) provided near the upper end of the second door plate (12). At the same time, the first air outlet (21b), which is an open portion on the downstream side of the first cooling space (21), is configured to communicate with the above-mentioned air flow path (30) from the front.

To cook food in this oven, hold the handle (16), open the door (1) 90 degrees forward as described above, and place the food in the heater (2). The placed oven plate is erected on the support rail (29) in the heating chamber (2), and the door (1) is closed. As a result, the front opening portion (20) of the heating chamber (2) is tightly closed by the third door plate (13) and the heat-resistant packing (15) of the door (1).
Then, when the display unit of the operation panel unit (32) is operated to start cooking, the hot air from the gas burner (not shown) is blown by the blower fan (24) from the blower hole (26a) of the back wall (26) to the heating chamber (26a). 2) Ingredients are cooked by being sent inside and convected. The combustion exhaust after heating is discharged to the outside from the downstream end (23a) of the exhaust flow path (23) through the exhaust port (10). That is, at the downstream end (23a) of the exhaust flow path (23), a flow of hot air toward the exhaust port (10) is generated as shown by the dotted arrow in FIG.

At the same time, the blower fan (34) in the operation chamber (3) operates, so that the cooling air outside the front of the operation chamber (3) is directed to the operation panel as shown by the arrow of the alternate long and short dash line in FIG. It is taken in from the air inlet (33) of the part (32), passes through the operation chamber (3), and flows to the rear air outlet (35). The cooling air flowing in the operation chamber (3) can cool the internal electrical components (37) and the like, and the air outlet (35) has a flow of cooling air toward the exhaust port (10). It will occur.

As described above, the rear opening portion (31) of the air flow path (30) provided between the heating chamber (2) and the operation chamber (3) is the exhaust flow path (23) of the heating chamber (2). ) Is sandwiched between the downstream end (23a) and the air exhaust port (35) of the operation room (3), so hot air and cooling air at the downstream end (23a) and the air exhaust port (35). Due to the draft effect of the flow of air, an air flow toward the rear opening (31) is also generated in the air flow path (30).
Since the front of the air flow path (30) communicates with the first cooling space (21) of the door (1) via the first air outlet (21b), it is inside the air flow path (30). The air flow in the first cooling space (21) and in the second cooling space (22) communicating with the first cooling space (21) via the second air outlet (22b) is also promoted by being guided by the air flow, and the first, The cooling air outside the lower part of the door (1) is drawn into the second cooling space (21) (22) from the first and second air inlets (21a) (22a).

Due to the draft effect generated at the exhaust port (10), the first and second cooling spaces (21) and (22) constituting the door (1) are cooled externally as shown by the solid arrows in FIG. Since the air is allowed to flow, the temperature of the door (1), particularly the first door plate (11) on the front surface side, can be reduced. Therefore, even if the user comes into contact with the first door plate (11), he / she does not feel uncomfortable due to the heat, and the heat from the door (1) affects the outside, which causes the entire kitchen to become hot. Can also be improved, which makes it possible to realize a cool and comfortable working environment.

Further, since the air flow path (30) through which the cooling air from the first cooling space (21) flows is provided above the heating chamber (2) and in a state of non-communication with the heating chamber (2), the door The cooling air flowing through (1) does not enter the heating chamber (2). Therefore, since the temperature inside the heating chamber (2) is not lowered, it does not affect the cookability of the ingredients, and the temperature inside the heating chamber (2) is necessary for cooking the ingredients. In order to maintain the temperature, it is not necessary to increase the amount of gas from the gas burner and separately heat the inside of the heating chamber (2) to raise the temperature.
In this way, the temperature rise of the door (1) due to the heat inside the heating chamber (2) is alleviated, and the cooling air that cools the door (1) does not enter the heating chamber (2). It is possible to provide a commercial oven that is safe, has excellent cookability, and has an energy-saving effect.

What is shown in FIG. 4 is a commercial oven according to the second embodiment of the present invention, and the configuration of the door (1) is the same as that of the above embodiment, the first, second, and third door plates. (11) (12) (13) have a triple structure, and the cooling air introduced from the first and second air inlets (21a) (22a) is used in the first and second cooling spaces (21) (22). ), And also flows from the first air outlet (21b) of the first cooling space (21) to the air flow path (30). A common exhaust flow path (38) between the air flow path (30) and the heating chamber (2) is provided behind the ceiling wall (27).

In this case, the air flow in the air flow path (30) is further promoted by the draft effect of the hot air flowing from the heating chamber (2) to the exhaust port (10) of the appliance body (100), and the door (1). ), The external cooling air is more easily drawn in from the first and second air inlets (21a) and (22a). As a result, the cooling air easily flows into the first and second cooling spaces (21) and (22), so that the temperature of the door (1) is lowered, and at the same time, the heating chamber exhausted from the exhaust port (10) is exhausted. Since the temperature of the hot air from (2) can also be reduced by the cooling air discharged from the exhaust port (10) through the air flow path (30), the temperature of the exhaust port (10) of the instrument body (100) The temperature rise above is also alleviated, and a highly safe oven can be provided.

In the second embodiment, the second air outlet (22b) is provided so as to open upward between the upper ends of the second and third door plates (12) and (13). The rear end of the upper surface of the first door plate (11) is extended to the upper side of the third door plate (13). By making the space between the extension end and the upper end of the third door plate (13) function as the first air outlet (21b), the second air outlet (22b) becomes the first air outlet (21b). ) Can be communicated with.

In each of the above embodiments, although not shown, the first door plate (11) is detachably attached to the second door plate (12), so that it can be used for a long period of time. , The glass plate (11a) of the first door plate (11), the glass plate (12a) of the second door plate (12), or the first air inlet (21a) or the second of the first cooling space (21). When dirt such as oil adheres to the second air inlet (22a) of the cooling space (22), the first door plate (11) is removed and the entire front and back surfaces of the first door plate (11) are cleaned, etc. Can be cleaned by. As a result, the transparency of the glass plates (11a) and (12a) in the first and second door plates (11) and (12) can be restored, and the first and second air inlets (21a) and (22a) can be restored. Accumulated dirt can be easily removed. Therefore, the flow of the cooling air to the first and second cooling spaces (21) and (22) can be easily restored.

In addition, the air flow in the first and second cooling spaces (21) and (22) of the door (1) leading to the air flow path (30) is from the hot air from the heating chamber (2) and from the operation room (3). Since the structure is promoted by the draft effect when the cooling air is exhausted from the exhaust port (10), it is not necessary to separately provide a fan for flowing the air in the door (1). Therefore, the number of parts can be reduced.

In addition, the blower fans (24) and (34) are driven continuously for a certain period of time even after the cooking of the ingredients in the heating chamber (2) is completed, so that the operation room (3) and the heating chamber (3) and the heating chamber (3) can be driven. Air will continue to flow toward the exhaust port (10) also in 2), and external cooling air will continue to flow in the first and second cooling spaces (21) and (22). As a result, the door (1) after the completion of cooking can be cooled in a short time, and the safety is further improved.

In addition, in order to cool the door (1), only one of the blower fans (24) and (34) may be installed. For example, if only the blower fan (24) for the heating chamber (2) is installed to promote convection and exhaust of hot air in the heating chamber (2), the heating chamber (2) goes to the exhaust port (10). Due to the draft effect of hot air, it is possible to generate an air flow toward the exhaust port (10) also in the air flow path (30). Similarly, only the blower fan (34) of the operation room (3) is installed, and the air intake port (33) goes to the exhaust port (10) through the air discharge port (35) in the operation room (3). By forcibly generating an air flow, the draft effect can generate an air flow in the air flow path (30). By creating an air flow in the air flow path (30), the cooling air can also flow in the first and second cooling spaces (21) and (22) of the door (1).

The door (1) is opened by tilting it forward with the lower end as the rotation fulcrum, but it can also be opened sideways with either the left or right side as the rotation fulcrum, or it can be slid back and forth. It may be a pull-out type.
Further, although the present invention has been adopted for a commercial oven, it can be applied to various cooking utensils such as a large grill and a household oven. As the heat source machine, an electric heater can be used in addition to the gas burner.

(1) ・ ・ ・ ・ ・ ・ ・ ・ ・ Door
(10) ・ ・ ・ ・ ・ ・ ・ ・ ・ Exhaust port
(11) (12) ・ ・ ・ ・ ・ 1st and 2nd door plates
(2) ・ ・ ・ ・ ・ ・ ・ ・ ・ Heater
(21) ・ ・ ・ ・ ・ ・ ・ ・ ・ First cooling space
(21a) ・ ・ ・ ・ ・ ・ First air inlet
(21b) ・ ・ ・ ・ ・ ・ First air outlet
(23) ・ ・ ・ ・ ・ ・ ・ ・ Exhaust flow path
(30) ・ ・ ・ ・ ・ ・ ・ ・ ・ Air flow path
(31) ・ ・ ・ ・ ・ ・ ・ ・ Rear opening

Claims (4)

A heating cabinet where foodstuffs and other objects to be heated are stored and heated,
A door that can open and close the front opening of the heating chamber,
It is provided with an exhaust port that communicates with the rear region of the heating chamber via an exhaust flow path and exhausts the air in the heating chamber to the outside.
An air flow path is provided above the heating chamber so that the rear opening portion communicates with or is close to the exhaust flow path.
Above the air flow path, an operation chamber in which an operation unit and an air suction port are arranged side by side is arranged on the front surface.
Behind the operation chamber, an air exhaust port for exhausting air in the operation chamber is communicated with the exhaust port.
Blower fans for sending air to the exhaust port are provided in each of the operation chamber and the rear area of the heating chamber.
The door is provided with a first cooling space between the first and second door plates located in the front and rear.
The first cooling space has a first air inlet that communicates with the outside at the upstream end, and has a first air outlet that communicates with the air flow path at the downstream end. .. In the cooking apparatus according to claim 1,
The blower fan is a heating cooker that is set to be continuously driven for a certain period of time even after the cooking in the heating chamber is completed. In the cooking apparatus according to claim 1 or 2.
The door is provided with a third door plate that forms a second cooling space behind the second door plate.
The upstream end of the second cooling space is a second air inlet that opens below the door together with the first air inlet of the first cooling space, and the downstream end is provided near the upper end of the second door plate. A heating cooker set to communicate with the first air outlet through the second air outlet. In the cooking apparatus according to any one of claims 1 to 3,
The first door plate is a heating cooker that can be attached to and detached from the second door plate.

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