JPWO2020145245A1 - Cooker - Google Patents

Abstract

Provided is a cooking device capable of cooling the upper part of a window more efficiently. A heating chamber having an opening, a door provided in the opening, a window provided in the door, an air flow path having an air outlet through which air flows inside and the air blows out to the window. The air outlet is arranged on the upper side of the window portion.

Description

The present invention relates to a cooking device. This application claims priority based on Japanese Patent Application No. 2019-3230 filed in Japan on January 11, 2019, the contents of which are incorporated herein by reference.

For example, Patent Document 1 discloses a high-frequency heating cooking apparatus provided with a cooling means for cooling a transparent window. The high-frequency cooking apparatus is provided with a duct that guides the air flow generated by the cooling fan to the air layer of the transparent window, and is configured to allow air to flow from the lower part to the upper part of the transparent window.

Japanese Unexamined Patent Publication No. 2005-273933

However, in the above-mentioned cooking device (high frequency cooking device), it is difficult to efficiently cool the upper part of the window part, which becomes particularly hot, because air flows from the lower part to the upper part of the window part (transparent window). Met.

In view of the above problems, one aspect of the present invention is, as an example, to provide a cooking device capable of more efficiently cooling the upper part of a window portion.

In the cooking cooker according to one aspect of the present invention, air flows through a heating chamber having an opening, a door provided in the opening, a window provided in the door, and the air flows through the window. An air flow path having an air outlet having an air outlet is provided, and the air outlet is arranged on the upper side of the window portion.

It is a schematic front view at the time of closing the door of the cooking apparatus which concerns on Embodiment 1 of this invention. It is a schematic front view when the door of the cooking apparatus shown in FIG. 1 is opened. It is a front perspective view of the door of the cooking apparatus shown in FIG. It is a front view of the door of the cooking apparatus shown in FIG. It is a right side view of the door of the cooking apparatus shown in FIG. It is a top view of the door of the cooking apparatus shown in FIG. FIG. 3 is a schematic rear perspective view of the door showing the flow of air flowing inside the door of the cooking cooker shown in FIG. 1. FIG. 4 is a cross-sectional view taken along the line VIII-VIII of the door of the cooking cooker shown in FIG. FIG. 4 is a cross-sectional view taken along the line IX-IX of the door of the cooking cooker shown in FIG. FIG. 6 is a cross-sectional view taken along the line XX of the door of the cooking cooker shown in FIG. FIG. 6 is a cross-sectional view taken along the line XI-XI of the door of the cooking cooker shown in FIG. It is a partially enlarged perspective view of the air outlet provided in the air flow path of the door of the heating cooker shown in FIG. 1 as seen from the rear. It is a schematic rear perspective view of the door which shows the flow of the air which circulates inside the door of the cooking apparatus which concerns on Embodiment 2 of this invention. FIG. 3 is a partially enlarged perspective view of an air outlet provided in an air flow path of a door of a cooking cooker according to a third embodiment of the present invention as viewed from the rear. It is a partially enlarged perspective view of the air outlet provided in the air flow path of the door of the cooking apparatus which concerns on Embodiment 4 of this invention as seen from the rear.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present specification and the drawings, the same or equivalent elements may be designated by the same reference numerals to omit duplicate explanations, and elements not directly related to the present invention may be omitted from the illustration. Furthermore, the forms of the components shown in such embodiments are merely examples, and the present invention is not limited to these forms.

(First Embodiment)
The door 102 of the cooker 100 and the cooker 100 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 6. FIG. 1 is a schematic front view of the cooking device 100 according to the first embodiment of the present invention when the door 102 is closed. FIG. 2 is a schematic front view of the cooking device 100 shown in FIG. 1 when the door 102 is opened. In the following description, in the cooking cooker 100, the surface on which the door 102 is provided is referred to as a front surface or a front surface, and the surface of the cooking cooker 100 facing the front surface is referred to as a rear surface or a back surface. Further, the right side of the cooking cooker 100 means the right side when the cooking cooker 100 is viewed from the front, and the left side of the cooking cooker 100 means the left side when the cooking cooker 100 is viewed from the front. do.

The heating cooker 100 includes a heating cabinet 101 having an opening 101a on the front surface, and a door 102 provided in the opening 101a. The heating chamber 101 has at least a heating means such as a heater, and heats the object to be heated F (for example, food) housed therein. In addition to the heating means such as a heater, the heating chamber 101 may have a heating means such as a magnetron that outputs a high frequency. Further, the heating chamber 101 may be provided with a steam generating means for heating the supplied water to generate steam, or may generate steam in the heating chamber 101 to cook the object F to be heated. ..

The door 102 of the cooking device 100 will be described with reference to FIGS. 3 to 6. FIG. 3 is a front perspective view of the door 102 of the cooking device 100 shown in FIG. FIG. 4 is a front view of the door 102 of the cooking device 100 shown in FIG. FIG. 5 is a right side view of the door 102 of the cooking device 100 shown in FIG. FIG. 6 is a top view of the door 102 of the cooking device 100 shown in FIG.

The door 102 is openably and closably attached to the front surface of the heating chamber 101. The door 102 has a shape that allows the opening 101a of the heating chamber 101 to be opened and closed, and is attached so as to be rotatable up and down with the lower portion (the side on the lower end side) of the heating chamber 101 as a fulcrum. The door 102 includes an operation unit 103 for operating the heating cooker 100, a window unit 104 for visually recognizing the inside of the heating chamber 101, and a handle 105 for the user to open and close the door 102. The window portion 104 is made of, for example, a transparent material so that the inside of the heating chamber 101 can be visually recognized.

The operation unit 103 is arranged vertically on the right end side of the front surface of the door 102, specifically, on the right side of the window unit 104. The operation unit 103 includes a substrate 103a (see FIG. 8) arranged inside the door 102, and a liquid crystal display unit 103b, a button 103c, and a dial 103d provided on the substrate 103a.

The window portion 104 is formed from the center of the front surface of the door 102, more specifically, the opening 104a formed from the side to the left side of the operation portion 103, and the heat-resistant glass 104b provided so as to cover at least the opening 104a. It is composed. The heat-resistant glass 104b is fixed to the front surface of the door 102 from the front side via the glass stopper 105b. More specifically, the glass stopper 105b is arranged on the left and right sides of the upper part of the front surface of the door 102 and is fixed to the door 102, and the heat-resistant glass 104b has an upper edge portion of the front surface of the door 102 and the glass stopper 105b. It is held by sandwiching it between them.

The handle 105 is provided on the outside of the door 102 and is for rotating with the lower portion of the door 102 as a fulcrum. The handle 105 is formed in a substantially U shape and is provided on the left and right sides of the upper front surface of the door 102. The handle 105 is fixed to the door 102 via the glass stopper 105b. More specifically, the connecting portions 105a located at each end of the handle 105 are connected to each end of the glass stopper 105b. The space between the handle 105 and the glass stopper 105b is formed as a space in which a user can insert a finger.

The air flow path 200 provided inside the door 102 will be described with reference to FIGS. 7 to 12. FIG. 7 is a schematic rear perspective view of the door showing the flow of air flowing inside the door 102. FIG. 8 is a cross-sectional view taken along the line VIII-VIII of the door 102 shown in FIG. FIG. 9 is a cross-sectional view taken along the line IX-IX of the door 102 shown in FIG. FIG. 10 is a cross-sectional view taken along the line XX of the door 102 shown in FIG. FIG. 11 is a cross-sectional view taken along the line XI-XI of the door 102 shown in FIG. FIG. 12 is a partially enlarged perspective view of the outlet 200f provided in the air flow path 200 as viewed from the rear.

As shown in FIG. 7, the door 102 is provided with an air flow path 200 through which external air (hereinafter, also referred to as air) flows. As an example, the air flow path 200 includes a first flow path 200a formed on the back side of the operation unit 103 and a second flow path 200b formed on the back side of the handle 105 and through which air flows from the first flow path 200a. Consists of including. The first flow path 200a is formed vertically on the back side of the operation portion 103, that is, on the side (right side) of the window portion 104 (opening 104a). In other words, the first flow path 200a is provided along the operation unit 103. More specifically, as will be described later, for example, the back surface side of the substrate 103a of the operation unit 103 constitutes a part of the first flow path 200a. As a result, air flows through the first flow path 200a, so that the operation unit 103 can be cooled. The second flow path 200b is formed on the back side of the handle 105. More specifically, as will be described later, for example, it is formed on the back surface side of the glass stopper 105b to which the handle 105 is attached. The second flow path 200b is formed above the window portion 104 (opening portion 104a) over the left and right sides. In other words, the second flow path 200b is provided along the handle 105. As a result, air flows through the second flow path 200b, so that the handle 105 can be cooled via the glass stopper 105b.

Hereinafter, the internal structure of the door 102 will be specifically described with reference to FIGS. 8 to 11.

As shown in FIGS. 8 and 9, the door 102 mainly includes a frame 102a constituting the outer shell (front surface) and a door panel 102f mainly constituting the outer shell (rear surface). An operation unit 103, heat-resistant glass 104b, a handle 105, a glass stopper 105b, and the like are attached to the frame 102a.

As shown in FIG. 8, the first flow path 200a is formed by arranging the flow path plate 201 on the back surface side of the substrate 103a of the operation unit 103. The operation unit 103 is an opening formed in the frame 102a by laminating and assembling a plurality of parts (for example, a substrate 103a, a liquid crystal display unit 103b, a button 103c, a dial 103d, a flow path plate 201, a substrate cover 203, etc.). It is attached by fitting it from the back side. The flow path plate 201 is arranged on the back side of the substrate 103a, and the space between the substrate 103a and the flow path plate 201 is the first flow path 200a. In this way, since air flows through the first flow path 200a on the back surface side of the substrate 103a, the substrate 103a can be cooled. Further, a substrate cover 203 to which a blower fan 202 is attached is arranged in the first flow path 200a. The board cover 203 functions as a partition plate that divides the first flow path 200a in the front-rear direction on the downstream side of the blower fan 202. The first flow path 200a is divided into a first branch flow path 200c through which air flows on the back side of the substrate 103a and a second branch flow path 200d that guides air toward the second flow path 200b by the substrate cover 203. Will be done.

An air supply port 201a (see FIG. 11) communicating with the outside is formed in the lower part of the flow path plate 201 (upstream side from the blower fan 202), and the upper part of the flow path plate 201 (downstream side from the blower fan 202). Is formed with a communication port 201b (see FIG. 8) that communicates with the second flow path 200b. That is, the air is taken into the first flow path 200a through the air supply port 201a by the blower fan 202. Then, the air flowing in the second branch flow path 200d in the first flow path 200a flows into the second flow path 200b through the communication port 201b.

An exhaust port 203a (see FIG. 11) that communicates with the outside is formed on the upper portion of the board cover 203 (downstream from the blower fan 202). That is, the air flowing in the first branch flow path 200c in the first flow path 200a is discharged to the outside through the exhaust port 203a.

As shown in FIG. 8, a part of the blower fan 202 on the outlet 202a side is arranged so as to overlap the liquid crystal display unit 103b. That is, the blower fan 202 is arranged on the upstream side of the liquid crystal display unit 103b of the first flow path 200a. Therefore, in the operation unit 103, at least the back side of the liquid crystal display unit 103b is configured so that the air blown out from the air outlet 202a of the blower fan 202 passes through.

In the above configuration, the air flow path 200 (first flow path 200a) is provided along at least the liquid crystal display unit 103b of the operation unit 103, so that the operation unit 103, particularly the liquid crystal display unit 103b, is blown by the fan 202. It can be efficiently cooled by the air blown from. Further, the first flow path 200a is divided into front and rear on the downstream side of the blower fan 202, and the air flowing into the second branch flow path 200d is guided to the second flow path 200b so that the second flow path 200b is guided. Air can flow through the road 200b. The amount of air flowing in the first branch flow path 200c is smaller than the amount of air flowing in the second branch flow path 200d. The first flow path 200a may be configured to supply air to at least the back side of the liquid crystal display unit 103b of the operation unit 103, and is not limited to the above.

As shown in FIG. 8, the second flow path 200b is provided on the back side of the glass stopper 105b. More specifically, it is formed between the frame 102a and the reinforcing frame 106 for reinforcing the frame 102a on the back side of the mounting surface of the glass stopper 105b.

A boss portion 102b for fixing the handle 105 (glass stopper 105b) is formed on the frame 102a. A plurality of boss portions 102b are provided so as to project from the frame 102a to the back surface side, and are formed side by side along the mounting surface (upper front surface) of the frame 102a to which the glass stopper 105b is mounted. The boss portion 102b is provided so that a part of the frame 102a projects in the thickness direction of the frame 102a. The glass stopper 105b projects to the back surface side, and a plurality of protrusions 105c that are fitted to each boss portion 102b are formed. A fastening hole (not shown), which is a screw insertion hole, is formed in the protrusion 105c.

In the above configuration, the handle 105 is fastened to the fastening hole of the protrusion 105c by a screw 107 from the back side (back side) after fitting the protrusion 105c of the glass stopper 105b to the boss portion 102b. A reinforcing frame 106 for reinforcing the frame 102a is provided between the screw 107 and the boss portion 102b. The reinforcing frame 106 is made of a sheet metal formed by bending one plate-shaped member a plurality of times. For the purpose of increasing the rigidity, the reinforcing frame 106 abuts on the tip portions of the reinforcing ribs 102c, the reinforcing ribs 102d, and the reinforcing ribs 102e formed so as to project from the frame 102a to the back surface side in addition to the back surface of the boss portion 102b. It is fixed to 102a.

The reinforcing rib 102c protrudes from the frame 102a toward the back surface above the handle 105 and is formed over the left and right sides. The reinforcing rib 102d protrudes from the frame 102a located at the height of the substantially upper end of the handle 105 toward the back surface side, and is formed over the left and right sides. The reinforcing rib 102e protrudes from the frame 102a located at the height of the substantially lower end of the handle 105 toward the back surface side, and is formed over the left and right sides.

In the above configuration, the second flow path 200b is surrounded by a space surrounded by the frame 102a and the reinforcing frame 106, that is, the upper front surface of the frame 102a, the reinforcing ribs 102d, the reinforcing frame 106, and the reinforcing ribs 102e. It is composed of the space that is used. The boss portion 102b is provided so as to cross the second flow path 200b in the front-rear direction.

As shown in FIG. 7, a first flow path 200a is formed below the right end (upstream end: the left end in FIG. 7) of the second flow path 200b, and is connected via a communication port 201b. There is. An exhaust port 200e is formed at the left end (downstream end: right end in FIG. 7) of the second flow path 200b. The air flowing from the first flow path 200a to the second flow path 200b is discharged to the outside through the exhaust port 200e. As a result, the air that has passed through the back side of the operation unit 103 flows through the second flow path 200b, so that the glass stopper 105b in contact with the door 102 (frame 102a) can be cooled. Further, the handle 105 can be cooled via the glass stopper 105b.

The air flow path 200 is composed of a first flow path 200a and a second flow path 200b, but is limited to this as long as it is provided at a position that does not overlap with the window portion 104 when viewed from the front-rear direction. Not done. Further, the first flow path 200a and the second flow path 200b may be configured by, for example, a duct or the like.

As shown in FIGS. 7, 9, 11 and 12, the air flow path 200 has an outlet 200f that blows air flowing inside to the window portion 104. The outlet 200f is arranged on the upper side of the window portion 104. The upper side of the window portion 104 refers to the upper side of the window portion 104 in the vertical direction with respect to the center. The outlet 200f is formed, for example, in the second flow path 200b provided above the window portion 104. More specifically, the outlet 200f is provided on the road wall forming the second flow path 200b (in the present embodiment, the reinforcing rib 102e constituting the bottom of the second flow path 200b). Blow-out to the window portion 104 means, for example, that air is blown out into the space sandwiched between the window portion 104 and the door panel 102f.

As shown in FIG. 12, the outlet 200f is composed of, for example, a notch formed in the reinforcing rib 102e. As an example, the notch is formed so that the width in the left-right direction is 60 mm and the length in the depth (front-back direction) is 4 mm. The outlet 200f is provided substantially in the center of the opening 101a of the heating chamber 101. Specifically, it is provided so as to overlap substantially the center of the opening 101a of the heating chamber 101 in the left-right direction when viewed from the adjacent direction (front-back direction) between the heating chamber 101 and the door 102. As a result, the air blown out from the outlet 200f can be blown out in the vicinity of the center of the upper portion where the temperature is particularly high in the window portion 104. Therefore, the upper part of the window portion 104 can be efficiently cooled. Further, since the blown air is heated near the center of the upper part of the window portion 104 which has become hot, it is difficult to cool the portion other than the upper part of the window portion 104. Therefore, for example, the heating chamber 101 for heating food or the like is less likely to be cooled by the air, and deterioration of the heating performance of the heating chamber 101 can be suppressed.

Further, when the heating chamber 101 is provided with the steam generating means, steam may leak from the heating chamber 101 into the door 102 and dew condensation may occur on the window portion 104. In this case, the occurrence of dew condensation can be suppressed by blowing air from the outlet 200f to the window portion 104. Further, for example, even if dew condensation occurs, evaporation can be promoted and the water droplets can be removed by stirring the air in the vicinity of the water droplets adhering to the window portion 104 by the wind blown from the outlet 200f.

As shown in FIG. 12, the outlet 200f is provided below the boss portion 102b provided near the center of the door 102 in the second flow path 200b. Specifically, the outlet 200f is formed so that the boss portion 102b is located above the central portion. The contour (outer shape) seen from the adjacent direction (front or back) of the boss portion 102b is formed in a substantially elliptical shape. The boss portion 102b is formed so that the long axis coincides in the left-right direction and the short axis coincides in the vertical direction.

In the above configuration, when the air flowing through the second flow path 200b reaches the boss portion 102b located above the outlet 200f, a part of the air flows along the contour (curved surface) of the boss portion 102b. A part of the air flowing along the contour of the boss portion 102b, that is, the air flowing along the lower part of the contour is oriented so as to flow diagonally downward. As a result, a part of the air flowing through the second flow path 200b can be guided to the outlet 200f. That is, the boss portion 102b is provided as a guide portion that guides a part of the air flowing through the second flow path 200b to the outlet 200f.

The outlet 200f is formed so that the boss portion 102b is located above the center thereof, but the present invention is not limited to this, and it is sufficient that the air flowing along the contour of the boss portion 102b can be guided to the outlet 200f. It suffices if it is arranged in the vicinity of the boss portion 102b. Further, the outlet 200f is not limited to the notch, and may be, for example, a hole formed in the air flow path 200 or the like.

As shown in FIG. 11, a return inlet 200g for returning the air blown to the window portion 104 to the second flow path 200b is formed on the downstream side of the outlet 200f in the air flow path 200 (second flow path 200b). Will be done. The return inlet 200g is formed on the road wall forming the second flow path (in the present embodiment, the reinforcing rib 102e forming the bottom of the second flow path 200b).

The return inlet 200 g is composed of, for example, a notch formed in the reinforcing rib 102e. As an example, the notch is formed so that the width in the left-right direction is 60 mm and the length in the depth (front-back direction) is 4 mm. The return inlet 200g is provided on the reinforcing rib 102e on the downstream side of the outlet 200f. Specifically, it is provided on the reinforcing rib 102e between the boss portion 102b and the boss portion 102b located on the downstream side of the second flow path 200b.

As a result, even if air flows through the outlet 200f, it is possible to prevent the pressure in the space of the window portion 104 from increasing. Therefore, it is possible to realize a smooth inflow of air from the second flow path 200b to the window portion 104 through the outlet 200f. Therefore, it is possible to cool the vicinity of the upper center where the temperature of the window portion 104 becomes particularly high. Further, by providing the return inlet 200g, an air flow is created from the outlet 200f along the return inlet 200g, that is, along the upper part of the window portion 104. Therefore, for example, the window portion 104 can be cooled more efficiently than in the case where the return inlet 200 g is not provided.

A part of the air flow path 200 may be composed of, for example, a duct connecting the outlet 200f and the return inlet 200g. Then, by allowing air to flow through the duct, the air flow path 200 may be configured to cool the upper portion of the window portion 104. Further, the outlet 200f is not limited to the notch, and may be, for example, a hole formed in the air flow path 200 or the like. Further, although a return inlet 200g for returning the air flowing into the window portion 104 through the outlet 200f to the second flow path 200b is provided, only the outlet 200f is formed in the second flow path 200b, and the return inlet 200g is provided. It does not have to be formed.

(Second embodiment)
With reference to FIG. 13, the outlet 200f having a configuration different from that of the first embodiment will be described. FIG. 13 is a schematic rear perspective view of the door 102 showing the flow of air flowing inside the door 102 of the cooking device 100 according to the second embodiment of the present invention.

The air outlet 200f is arranged on the upper side of the window portion 104, and is provided as an example on the upper side side of the window portion 104 (in the present embodiment, the first flow path 200a). More specifically, the outlet 200f is provided on the road wall forming the downstream side of the first flow path 200a. Further, a return inlet 200g is formed in the second flow path 200b, and the air blown out to the window portion 104 is configured to return to the second flow path 200b.

As described above, the outlet 200f is not limited to the second flow path 200b, and may be arranged on the upper side of the window portion 104. As a result, the air blown out from the outlet 200f is blown out in the vicinity of the center of the upper portion where the temperature is particularly high in the window portion 104, so that the upper portion of the window portion 104 can be efficiently cooled.

(Third embodiment)
With reference to FIG. 14, a guide unit having a configuration different from that of the first embodiment and the second embodiment will be described. FIG. 14 is a partially enlarged perspective view of the outlet 200f provided in the second flow path 200b of the cooking cooker 100 according to the third embodiment of the present invention as viewed from the rear.

The air outlet 200f is provided in the reinforcing rib 102e between the boss portion 102b and the boss portion 102b located near the center of the door 102 in the second flow path 200b. The guide portion is composed of a baffle plate 300. The air conditioning plate 300 is composed of a single plate-shaped member formed in a substantially rectangular shape. The air conditioning plate 300 is provided so as to incline from the downstream end of the air outlet 200f toward the front and upper sides.

As a result, a part of the air flowing into the second flow path 200b can be guided to the outlet 200f along the air conditioning plate 300. Therefore, air can be blown out in the vicinity of the center of the upper portion where the temperature becomes particularly high in the window portion 104.

(Fourth Embodiment)
With reference to FIG. 15, a guide unit having a configuration different from that of the first embodiment to the third embodiment will be described. FIG. 15 is a partially enlarged perspective view of the outlet 200f provided in the second flow path 200b of the cooking cooker 100 according to the fourth embodiment of the present invention as viewed from the rear.

The air outlet 200f is provided in the reinforcing rib 102e between the boss portion 102b and the boss portion 102b located near the center of the door 102 in the second flow path 200b. The guide portion includes a duct 400 connected to the outlet 200f. The duct 400 is formed so as to extend upstream from the outlet 200f along the reinforcing rib 102e constituting the bottom of the second flow path 200b, and is provided so as to cover the outlet 200f. The inflow port of the duct 400 is configured to face the upstream side in the second flow path 200b.

As a result, a part of the air flowing into the duct 400 from the second flow path 200b can be guided to the outlet 200f. Therefore, air can be blown out in the vicinity of the center of the upper portion where the temperature becomes particularly high in the window portion 104. Further, by forming the duct 400 so as to cover the outlet 200f, it is possible to prevent dust from entering the window portion 104 through the outlet 200f.

The present invention is not limited to the above embodiment, and various modifications are possible. For example, it can be replaced with a configuration that is substantially the same as the configuration shown in the above embodiment, a configuration that exhibits the same action and effect, or a configuration that can achieve the same purpose.

Claims (8)

A heating cabinet with an opening,
The door provided in the opening and
The window provided on the door and
An air flow path having an air outlet through which air flows through the interior and the air blows out to the window portion is provided.
The air outlet is a cooking device arranged on the upper side of the window portion. The cooking device according to claim 1, wherein the outlet is provided substantially in the center of the opening. The cooking device according to claim 1 or 2, wherein the air flow path is provided above the window portion. Equipped with a handle that opens and closes the door
The cooking device according to any one of claims 1 to 3, wherein the air flow path is provided along the handle. The cooker according to claim 4, wherein the air flow path is provided with a guide portion for guiding a part of the air to the outlet. The cooking device according to claim 5, wherein the guide portion includes a boss portion for fixing the handle. The one according to any one of claims 1 to 6, wherein the air flow path has a return inlet for returning the air blown to the window portion to the air flow path on the downstream side of the outlet. Heating cooker. It has an operation unit to operate the cooking cooker, and has an operation unit.
The heating cooker according to any one of claims 1 to 7, wherein the air flow path is provided along at least the liquid crystal display unit in the operation unit.

Images