TW201636280A - Microwave oven container - Google Patents

Abstract

The purpose of the present invention is to provide a microwave oven container that enables accurate vapor release at a vapor discharge portion only and prevention of vapor release at a portion other than the vapor discharge portion. The microwave oven container (10) comprises: a container body (20) having an opening (21) at the top; a flange portion (22) formed so as to extend outward from the opening (21) of the container body (20); and a heat-seal portion (23) which is formed in a rib shape on the entire perimeter of the top surface of the flange portion (22) and is heat-sealed to a film-like lid member (50) which covers the opening (21). The heat-seal portion (23) has: a first heat-seal portion (25) which allows the heat seal of the lid member (50) to be broken when the pressure of vapor generated in the container body (20) reaches a predetermined pressure, thereby discharging the vapor; and a second heat-seal portion having a greater width than that of the first heat-seal portion (25).

Description

Microwave oven

The present invention relates to an appliance for a microwave oven.

In the case of the microwave oven, for example, as disclosed in Patent Documents 1 and 2 below, a flange portion extending outward from the opening is formed, and a rib-shaped heat fusion portion is formed on the upper surface of the flange portion over the entire circumference. . The heat fusion portion is a portion that thermally fuses the film-shaped lid that closes the opening of the device. Further, a portion of the heat fusion portion is formed with a so-called vapor discharge portion for discharging steam, and the vapor discharge portion is formed of a V-shaped portion formed by a pattern that is expanded toward the outside. In the steam discharge portion configured as described above, when the steam generated in the tool reaches a specific pressure, the stress concentrates on the sharp portion inside the V-shaped portion, and the thermal fusion of the cover is broken.

However, since the width of the heat fusion of the steam discharge portion and the other heat fusion portion is equal, when the width is uniformly set to be wide, the heat fusion strength becomes strong, and the steam discharge in the steam discharge portion cannot be sufficiently performed. When the width is uniformly set to be narrow, the problem of steam discharge in the heat fusion portion other than the steam discharge portion cannot be avoided.

Further, in the steam discharge portion configured as described above, when the steam reaches a specific pressure, it is possible to reliably control the thermal fusion of the lid body to be broken, and it is also conceivable to set the heat fusion width of the heat fusion portion to a specific one. The method of numerical value, however, is inevitably limited because it has to be carried out in a narrow space.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent No. 4539266

[Patent Document 2] Japanese Patent No. 5050648

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an oven-equipped appliance that can discharge steam only accurately in a steam discharge portion and avoid steam discharge at a position other than the steam discharge portion.

Further, another object is to provide an apparatus for a microwave oven which can reliably control the thermal fusion of the lid when the steam reaches a specific pressure.

The present invention is understood by the following constitution.

(1) A first aspect of the apparatus for a microwave oven according to the present invention, characterized in that it is an appliance for a microwave oven, and includes: an apparatus body having an opening at an upper portion thereof; and a flange portion formed from the apparatus body The opening extends outward; and the heat fusion portion is formed in a rib shape over the entire circumference of the upper surface of the flange portion, and is thermally fused with the film-shaped cover that blocks the opening; the heat fusion portion has: first a heat fusion portion, wherein when the steam generated in the apparatus body reaches a specific pressure, heat fusion with the cover body is broken to discharge steam; and the second heat fusion portion is wider than the first heat fusion portion .

(2) In the above configuration (1), the first heat fusion portion may have a V-shaped portion that is expanded outward, and the flange portion may be on both sides of the first heat fusion portion and the second portion The area on the outer side of the heat fusion portion has a concave portion.

(3) A second aspect of the appliance for a microwave oven according to the present invention, characterized in that it is an appliance for a microwave oven, and includes: an apparatus body having an opening at an upper portion thereof; and a flange portion formed from the apparatus body The opening extends outward; and the heat fusion portion is formed in a rib shape over the entire circumference of the upper surface of the flange portion, and a film that blocks the opening The heat fusion portion has a steam discharge portion, and when the steam generated in the apparatus body reaches a specific pressure, the heat is merged with the cover body to break the steam to discharge the steam; The V-shaped portion that is expanded toward the outside in a plan view is inclined such that the front end of the V-shaped portion is lowered toward the opening in a side view.

(4) In the above configuration (3), the flange portion may have a concave portion on both sides of the steam discharge portion and on a region outside the heat fusion portion.

(5) In the above configuration (1) or (3), the flange portion may be formed such that an extending end thereof is inclined downward, and the heat fusion portion is formed such that an upper surface thereof is horizontal.

(6) In the configuration of the above (1) or (3), the device system may have a step along a circumferential direction and a small diameter along a side surface thereof, and the opening side may be from the step The side faces are inclined more outward than the vertical direction.

(7) A third aspect of the apparatus for a microwave oven according to the present invention, characterized in that it is an appliance for a microwave oven, and includes: an apparatus body having an opening at an upper portion thereof; and a flange portion formed from the apparatus body The opening extends outward; and the heat fusion portion is formed in a rib shape over the entire circumference of the upper surface of the flange portion, and is thermally fused with the film-shaped cover that blocks the opening; the heat fusion portion has: first a heat fusion portion that, when the steam generated in the body of the apparatus reaches a specific pressure, is melted by heat fusion with the cover body to discharge steam; and the second heat fusion portion is from the upper surface of the flange portion. The height of the initial protrusion is higher than that of the first heat fusion portion described above.

(8) In the above configuration (7), the first heat fusion portion may have a V-shaped portion that is expanded outward.

(9) The configuration of the above (7) or (8), further comprising: a gradation portion located between the first heat fusion portion and the second heat fusion portion, and the first heat fusion portion The height of the protrusion to the second heat fusion portion gradually increases.

(10) In any one of the above (7) to (9), the second hot melt may be The joint portion has the above-mentioned protruding height in the range of 1.1 times to 2.5 times the first heat fusion portion.

(11) In any one of the above (7) to (10), the first heat fusion portion may have one or more front ends, and the front end may be located outside the device body to face the flange The way the outer edge of the part is lowered is inclined.

According to the microwave oven apparatus configured as described above, it is possible to discharge the steam only accurately in the steam discharge portion, and it is possible to prevent the steam from being discharged at a position other than the steam discharge portion.

Further, when the steam reaches a specific pressure, it is possible to surely control the thermal fusion of the lid to be broken.

10‧‧‧Microwave appliances

20‧‧‧ Appliance body

21‧‧‧ openings

22‧‧‧Flange

22A‧‧‧ Wide section

23‧‧‧Hot Fusion Department

23A‧‧‧First Thermal Fusion Unit (First Embodiment)

23B‧‧‧Second heat fusion unit (first embodiment)

24‧‧‧ Cover opening

25‧‧‧Steam discharge department

27‧‧ ‧ step

28‧‧‧ Side (from the side of the step 27 to the side of the opening 21)

31‧‧‧ recess

32‧‧‧ recess

50‧‧‧ cover

231‧‧‧First Thermal Fusion Unit (2nd and 3rd Embodiments)

231A‧‧‧ cover opening

231B‧‧‧Steam Exhaust Department

232‧‧‧Second heat fusion unit (second and third embodiments)

233‧‧‧ Gradient

Fig. 1 is a perspective view showing the entire first embodiment of the microwave oven appliance of the present invention.

Fig. 2(a) is a plan view showing the device body, and Fig. 2(b) is a side view showing the device body.

Fig. 3 (a) is a cross-sectional view taken along line IIIa-IIIa of Fig. 2 (a), and (b) is a cross-sectional view showing a main portion when a plurality of dies are placed upside down.

4(a) is a perspective view showing a lid opening portion and a steam discharge portion, and (b) is a cross-sectional view taken along line IVb-IVb of (a) for explaining a horizontal plane Q with respect to a height of the steam discharge portion. Diagram of change.

Fig. 5(a) is a perspective view showing the lid opening portion and the steam discharge portion, and Fig. 5(b) is a cross-sectional view showing the line IVb-IVb of (a) for explaining the relative change in the height portion of each of the steam discharge portions. Picture.

Fig. 6 is a view showing a second embodiment of the apparatus for a microwave oven according to the present invention, wherein (a) is a perspective view showing a lid opening portion and a steam discharge portion, and (b) is a sectional view taken along line IVb-IVb in (a). .

Fig. 7 is a view showing a third embodiment of the apparatus for a microwave oven according to the present invention, wherein (a) is a perspective view showing a lid opening portion and a steam discharge portion, and (b) is a section taken along line IVb-IVb in (a). view.

Figure 8 is a cross-sectional view taken along line V-V of Figure 2(a).

Fig. 9 is a plan view showing the entire fourth embodiment of the microwave oven appliance of the present invention.

Hereinafter, a mode for carrying out the invention (hereinafter referred to as an embodiment) will be described in detail with reference to the accompanying drawings. In addition, in the description of the entire embodiment, the same elements are denoted by the same reference numerals except for a part.

(First embodiment)

Fig. 1 is a perspective view showing the entirety of an apparatus for a microwave oven of the present invention. The microwave oven appliance 10 shown in Fig. 1 is composed of an appliance body 20 and a lid body 50. Both the luminaire main body 20 and the lid body 50 are formed of a resin material.

The appliance body 20 is formed substantially in a rectangular shape having a rounded corner portion in plan view, and has an opening 21 in the upper portion. Further, the luminaire main body 20 is formed with a flange portion 22 that extends outward from the opening 21. The flange portion 22 is formed substantially in a rectangular shape in a plan view, and has a wide portion 22A having a width wider than the other portions at the corner portion.

On the upper surface side of the flange portion 22, a rib-shaped heat fusion portion 23 which is a convex portion is formed. The heat fusion portion 23 is formed over the entire circumference of the flange portion 22. In other words, the heat fusion portion 23 is formed on the upper surface of the flange portion 22 so as to surround the opening 21 of the fixture body 20 in a plan view.

The lid body 50 is formed of a film shape and a circumference of substantially the same size as the outer circumference of the flange portion 22. After the contents (not shown) are housed in the luminaire main body 20, the lid body 50 and the heat fusion portion 23 are thermally fused (sealed), thereby closing the opening 21 of the luminaire main body 20. The lid body 50 is generally a heated sealing plate having a flat pressing surface corresponding to the heat fusion portion 23 of the flange portion 22 in a state in which the lid body 50 and the flange portion 22 are overlapped. The outer cover body 50 is pressed for a fixed time, so that the heat fusion portion 23 and the inner surface of the cover 50 are fused. With. In this case, the welding strength of the portion to be melted is determined by the temperature of the sealing plate, the contact time between the lid body 50 and the heat fusion portion 23, the pressure, and the material of the lid body 50 and the heat fusion portion 23. Further, Fig. 1 shows a state in which one portion of the lid body 50 is peeled off from one corner portion of the flange portion 22 after being heated by the microwave oven.

Further, on one corner portion of the flange portion 22 which is the starting point of the peeling of the cover 50, the heat fusion portion 23 is formed in an "M"-shaped pattern, and the cover is formed in the heat fusion portion 23 by the pattern. The portion 24 and the steam discharge portion 25. In the first embodiment, the heat fusion portion 23 including the steam discharge portion 25 is referred to as a first heat fusion portion 23A, and the other heat fusion portion 23 is referred to as a second heat fusion portion 23B.

2(a) is a plan view showing the device body 20, and FIG. 2(b) is a side view showing the device body 20. Further, the illustration of the lid body 50 is omitted in FIGS. 2(a) and 2(b).

As shown in FIG. 2(a), in the "M"-shaped pattern of the heat fusion portion 23, the vapor discharge portion 25 is formed by the central "V"-shaped pattern (V-shaped portion that is expanded toward the outside). The inverted V-shaped pattern on both sides (the V-shaped portion that is flared toward the inside) forms the lid opening portion 24. In this case, the portion on the right side of the steam discharge portion 25 is shared with one portion of the unsealing portion 24 adjacent to the right side, and the portion on the left side of the steam discharge portion 25 is shared with one portion of the lid opening portion 24 adjacent to the left side.

When the lid body 50 is peeled off from the corner portion formed by the lid opening portion 24 of the flange portion 22, the stress concentrates on the sharp portion of the inverted "V"-shaped pattern of the lid opening portion 24, which makes it easy to The effect of peeling off the cover 50. Further, when heating in a microwave oven, the steam pressure generated in the apparatus body 20 is concentrated in the sharp portion stress of the "V"-shaped pattern of the steam discharge portion 25, and when the steam pressure reaches a specific pressure, the cover is used. The heat fusion of the body 50 is easy to break.

Such a steam discharge portion 25 has a pattern of a "V" shape formed by one portion of the heat fusion portion 23 as described above, and has a heat fusion width t which is narrower than the heat fusion portion 23 other than the portion. Optionally steaming by setting the steam discharge portion 25 to a narrower heat fusion width t The steam is easily discharged from the heat fusion portion 23 of the V-shape which is thermally fused and broken by the cover 50. Further, by widening the heat fusion width T of the heat fusion portion 23 other than the steam discharge portion 25, it is possible to prevent the steam from being released at a portion other than the steam discharge portion 25.

Here, one portion of the heat fusion portion 23 is formed into a "V" shape to form a heat fusion width t which is narrower than the heat fusion width T of the heat fusion portion 23 other than the portion, that is, the heat fusion width T A preferred embodiment of the case where the hot fusion width t is wider is described. It is preferable to set the heat fusion width t to a range of 0.5 to 2.0 mm, and it is preferable to set the heat fusion width T to a range of 2.0 to 5.0 mm. In this case, the ratio of the heat fusion width T to the heat fusion width t is preferably 1.5 to 4 times. According to this configuration, it is possible to reliably break the heat fusion with the lid body 50 of the steam discharge portion 25, and also to prevent the steam from being released at a position other than the steam discharge portion 25.

Fig. 3(a) is a cross-sectional view showing IIIa-IIIa of Fig. 2(a). As shown in Fig. 3 (a), the flange portion 22 of the luminaire main body 20 is formed such that its extending end is inclined downward at an angle θ (for example, 6°). Such inclination of the flange portion 22 is substantially the same throughout the entire circumference of the flange portion 22. The warpage during the forming of the fixture body 20 is formed in advance of the intended configuration. In this case, in order to ensure the reliability of thermal fusion between the heat fusion portion 23 and the lid body 50 (see FIG. 1), the upper surface thereof is formed almost horizontally. Therefore, the heat fusion portion 23 is formed such that the height t1 of the flange portion 22 with respect to the inner circumferential side is smaller than the height t2 of the flange portion 22 with respect to the outer circumferential side.

4(a) is a perspective view showing the lid opening portion 24 and the steam discharge portion 25 formed on the wide portion 22A of the flange portion 22. Fig. 4 (b) is a cross-sectional view taken along the line IVb-IVb of Fig. 4 (a), and shows a change in the height of the steam discharge portion 25 with respect to the horizontal plane Q. As shown in FIGS. 4(a) and 4(b), in a side view, the steam discharge portion 25 is inclined such that the front end of the V-shaped portion is lowered toward the opening. Here, the flange portion 22 is formed such that the extending end thereof is inclined downward at an angle θ (for example, 6°) as shown in FIG. 4(b), and the height t3 of the steam discharge portion 25 with respect to the outer horizontal plane Q is formed. It is lower than the height t4 of the horizontal plane Q with respect to the outer side.

In this case, the heat fusion portion 23 other than the steam discharge portion 25 (including the cover opening portion) The upper surface of one of 24 is the same as that shown in Fig. 3(a) and is formed horizontally. By tilting the steam discharge portion 25 so as to be lower toward the opening 21 at the front end of the V-shaped portion, the sealing strength of the opening 21 side of the steam discharge portion 25 can be weakened, and the steam can be easily released. . Therefore, when the steam reaches a specific pressure, it is possible to surely control the thermal fusion of the cover 50 to be broken.

Here, by using FIGS. 5(a) and 5(b) corresponding to FIGS. 4(a) and 4(b), the steam discharge portion 25 is inclined so as to be lowered toward the opening 21 at the inner end of the V-shaped portion. The preferred aspect of the situation is illustrated. Fig. 5 (a) is a perspective view showing the lid opening portion 24 and the steam discharge portion 25, similarly to Fig. 4 (a). Fig. 5 (b) is a cross-sectional view taken along line IVb-IVb of Fig. 5 (a), showing a relative change in the height portion of each of the steam discharge portions 25. In FIG. 5(b), the outer edge of the flared end portion (left end in the drawing) of the outer side of the vapor discharge portion 25 is secured from the flange portion 22 in consideration of the relationship between the thickness of the member to be provided as the microwave oven device. The height t7 is preferably set to 5 mm, and further preferably set to 1 to 3 mm. Preferably, the average is about 1.2 mm.

Moreover, for lowering the front end (the right end in the drawing) toward the opening 21, it is preferable to lower the height t6 of the outer edge of the right end (the outer edge of the left end of the right end in the drawing) to 40% to 90% of the height t7 of the outer edge of the left end. The height t5 of the inner edge of the right end (the right outer edge of the right end in the figure) is also 5% to 50% of the height t7 of the outer edge of the left end (average of about 30%). In this case, the height t5 is lower than the height t6. With such a configuration, the front end of the V-shaped portion of the steam discharge portion 25 is made lower than the flared end portion, and the inner edge of the front end itself is lower than the outer edge thereof, so that the opening 21 is distant from the apparatus body 20 From the end side to the proximal end side, the sealing strength of the steam discharge portion 25 can be changed from a relatively strong portion to a relatively weak portion.

Returning to Fig. 2(a), in the flange portion 22 in which the lid opening portion 24 and the steam discharge portion 25 are formed, on both sides of the steam discharge portion 25 and the heat fusion portion 23 (including a portion of the lid opening portion 24) On the inner side, two recesses 31 are formed. Further, the flange portion 22 is formed on both sides of the steam discharge portion 25 and on the outer side of the heat fusion portion 23 (including a portion of the lid opening portion 24). There are two recesses 32. The heat fusion portion 23 formed to surround the opening 21 of the apparatus body 20 is preferably formed close to the opening 21 in order to prevent the contents from entering, whereby the opposite side of the steam discharge portion 25 of each cover opening portion 24 is formed. The portion is formed in a pattern having a sharp inclination and continuous on the heat fusion portion 23, and a sufficient space can be secured between the outer side of the heat fusion portion 23 and the outer periphery of the flange portion 22 (wide portion 22A). The recess 32 is formed in the space.

As shown in FIG. 8 of the cross-sectional view of the VV line in FIG. 2(a), the concave portions 31 and 32 can set the height of the heat fusion portion 23 (the cover opening portion 24) to the bottom surfaces of the concave portions 31 and 32. Relatively high, when the lid body 50 (see FIG. 1) is sealed, the effect of preventing the lid body 50 from being attached to the flange portion 22 can be achieved. Further, although it is considered that the concave portion is formed toward the portion on the outer side of the V-shaped portion of the steam discharge portion 25, since the portion is extremely narrow, it is difficult to form, and by the alternative of forming the concave portion 32, Achieve the same effect.

Further, returning to FIG. 3(a), a step 27 having a small diameter is formed on the side surface of the luminaire main body 20 along the circumferential direction thereof. Further, the side surface 28 on the opening 21 side of the step 27 is formed to be inclined further outward in the vertical direction (indicated by the broken line P in the drawing). As shown in Fig. 3(b), the step 27 of the side surface of the apparatus body 20 has a function as a stopper, and when the plurality of appliance bodies 20 are placed upside down, the upper device body 20 is prevented from being blocked. The instrument body 20 is deeply housed in the lower portion, and the side surface 28 on the side of the opening 21 is inclined more outward in the vertical direction than the step 27, so that the upper device body 20 can be easily removed from the lower device body 20 Take out the effect.

(Second embodiment)

In the second embodiment and the third embodiment described below, the flange portion 22 is formed with a heat fusion portion 23 that protrudes upward in a convex shape on the upper surface side. A lid opening portion 231A and a steam discharge portion 231B are formed in the heat fusion portion 23, and the lid opening portion 231A and the steam discharge portion 231B are referred to as a first heat fusion portion 231, and the heat fusion portion is not included. 23 is referred to as a second heat fusion portion 232. Fig. 6(a) is a perspective view showing the lid opening portion 231A and the steam discharge portion 231B formed in the wide portion 22A of the flange portion 22. Fig. 6(b) is a cross-sectional view taken along line IVb-IVb of Fig. 6(a). As shown in FIGS. 6(a) and 6(b), the steam discharge portion 231B is inclined in such a manner that the front end of the V-shaped portion is lowered toward the opening when viewed from the side. Here, the flange portion 22 is formed such that its extended end is inclined downward at an angle θ (for example, 6°) as shown in Fig. 6(b), and the height t3 of the steam discharge portion 231B with respect to the outer horizontal plane Q is low. The height t4 of the horizontal plane Q with respect to the outer side.

In this case, the upper surface of the second heat fusion portion 232 (including a portion of the lid opening portion 231A) other than the steam discharge portion 231B is formed in a horizontal shape as shown in FIG. 3(a). By tilting the steam discharge portion 231B toward the inside of the V-shaped portion toward the opening 21, the sealing strength of the opening 21 side of the steam discharge portion 231B can be weakened, and the steam can be easily released. Therefore, when the steam reaches a specific pressure, it is possible to surely control the thermal fusion of the lid body 50 to be broken.

Here, a description will be given of a preferred embodiment in which the steam discharge portion 231B is inclined such that the front end of the V-shaped portion is lowered toward the opening 21. In FIG. 6(b), it is preferable to ensure the relationship between the thickness of the member to be provided as the microwave oven device, and the outer edge of the end portion (left end in the drawing) of the expanded side of the steam discharge portion 231B. The height t7 at which the flange portion 22 protrudes is set to 1 to 5 mm, and more preferably set to 1 to 3 mm. Preferably, the average is about 1.2 mm.

Further, for the front end (the right end in the drawing) which is lowered toward the opening 21, it is preferable that the protruding height t6 of the outer edge of the right end (the outer edge of the left side in the drawing) is lowered to 40% to 90 of the protruding height t7 of the outer edge of the left end. %, the protruding height t5 of the inner edge of the right end (the outer edge of the right end of the figure) is also reduced to 5% to 50% (average of about 30%). In this case, the protruding height t5 is formed to be lower than the protruding height t6. With this configuration, the front end of the V-shaped portion of the steam discharge portion 231B is lowered toward the flared end, and the inner edge of the front end itself is lower than the outer edge thereof, whereby the opening 21 of the apparatus body 20 is accompanied by The distal side lateral proximal side enables the vapor discharge portion 231B The seal strength changes from a relatively strong portion to a weaker portion.

In the second embodiment, the height from the upper surface of the flange portion 22 is formed such that the height in the second heat fusion portion 232 is higher than the height of the first heat fusion portion 231 as follows. . That is, as shown in FIG. 6(b), the second heat fusion portion 232 is provided so as to be higher than the height t7 at which the flange portion 22 of the V-shaped end portion is expanded from the lid opening portion 231A. The height t7' protruding from the flange portion 22 in the heat fusion portion 232 is higher. Further, the broken line L in the figure indicates an imaginary line of the height t7 of the protrusion. By forming the second heat fusion portion 232 higher than the first heat fusion portion 231, the step of sealing the lid 50 to the heat fusion portion of the flange portion 22 can be made by using a flat sealing plate. The pressure applied to the first heat fusion portion 231 is smaller than the pressure applied to the second heat fusion portion 232, and the height difference between the protrusions of the first heat fusion portion and the second heat fusion portion is appropriately set, and in particular, the pair is discharged as steam. The adjustment of the welding strength of the first heat fusion portion 231 of the portion is facilitated.

Regarding the ratio of the height of the protrusion of the first heat fusion portion and the second heat fusion portion, it is preferable to set the height of the protrusion of the second heat fusion portion to be the height of the welding strength of the lid body 50 of the steam discharge portion. The height of the protrusion of the first heat fusion portion is in the range of 1.1 times to 2.5 times. For example, when the height of the protrusion of the first heat fusion portion is 1.0 mm, it is preferable that the height of the protrusion of the second heat fusion portion is 1.5 mm.

Here, a gradient gradually changing from the height at which the first heat fusion portion 231 protrudes to the height at which the second heat fusion portion 232 protrudes is provided between the first heat fusion portion 231 and the second heat fusion portion 232. Part 233. By providing the gradation portion 233, it is possible to smooth the height change of the protrusion, and it is possible to avoid the influence of the thermal fusion of the lid body 50 and the luminaire main body 20 due to the change in the height of the protrusion.

(Third embodiment)

7(a) shows the first heat fusion portion 231 formed on the wide portion 22A of the flange portion 22, that is, the lid opening portion 231A, the steam discharge portion 231B, and the first heat fusion portion 231. 2 is a perspective view of the heat fusion portion 232. Figure 7 (b) is a cross-sectional view taken along line IVb-IVb of Figure 7 (a) Figure. As shown in FIGS. 7(a) and 7(b), the front end of the outer side of the luminaire main body 20 of the lid opening portion 231A of the first heat fusion portion 231 may be inclined toward the outer edge of the flange portion 22. In other words, the height t8 at which the flange portion 22 on the outer side of the V-shaped front end of the lid opening portion 231A protrudes is lower than the height t9 from the flange portion 22 on the inner side. With such a configuration, opening can be easily performed. Further, although both front ends of the outer side of the luminaire main body 20 of the lid opening portion 231A are inclined, any one of the front ends may be inclined or one or more front ends may be inclined.

Similarly to the second embodiment, the steam discharge portion 231B is inclined such that the front end of the V-shaped portion is lowered toward the opening in the side view. Here, the flange portion 22 is formed such that its extended end is inclined downward at an angle θ (for example, 6°) as shown in Fig. 7(b), and the height t3 of the steam discharge portion 231B with respect to the outer horizontal plane Q is low. The height t4 of the horizontal plane Q with respect to the outer side. Since the effects and the preferred aspects in this respect are the same as those in the second embodiment, the description thereof will be omitted.

In the third embodiment, the height protruding from the upper surface of the flange portion 22 is formed as follows in order to make the height in the second heat fusion portion 232 higher than the height of the first heat fusion portion 231. In other words, as shown in Fig. 7(b), the second heat fusion portion 232 is provided so as to protrude from the flange portion 22 of the inner side of the V-shaped end portion of the lid opening portion 231A. The height t10 protruding from the flange portion 22 of the second heat fusion portion 232 is higher. By forming the second heat fusion portion 232 higher than the first heat fusion portion 231, the step of sealing the lid 50 to the heat fusion portion of the flange portion 22 can be made by using a flat sealing plate. The pressure applied to the first heat fusion portion 231 is smaller than the pressure applied to the second heat fusion portion 232, and the height difference between the protrusions of the first heat fusion portion and the second heat fusion portion is appropriately set, and in particular, the pair is discharged as steam. The adjustment of the welding strength of the first heat fusion portion 231 of the portion is facilitated.

Regarding the ratio of the protruding height t9 to the protruding height t10, it is preferable to set the protruding height t10 to a range of 1.1 times to 2.5 times the protruding height t9 from the viewpoint of adjusting the welding strength of the lid body 50 of the steam discharge portion. For example, when the protruding height t9 is set to 1.0 mm, it is preferably To highlight the height t10 is 1.5mm.

Here, the height between the first heat fusion portion 231 and the second heat fusion portion 232 is gradually changed from the height t9 of the protrusion of the first heat fusion portion 231 to the height t10 of the protrusion of the second heat fusion portion 232. The gradation portion 233. By providing the gradation portion 233, it is possible to smooth the height change of the protrusion, and it is possible to avoid the influence of the failure of the fusion of the lid body 50 and the luminaire body 20 due to the change in the height of the protrusion.

(Fourth embodiment)

In the first embodiment to the third embodiment, the microwave oven device 10 is a rectangular shape in which the device body 20 is formed substantially in a circular shape in a plan view, and the flange portion 22 is formed substantially in plan view. It is rectangular and has a wide portion 22A at the corner. However, it is not limited to this. For example, it is of course possible to adopt a configuration as shown in FIG. 9, that is, the device body 20 is formed substantially in a circular shape in a plan view, and the flange portion 22 is formed substantially in a square shape in plan view and has a wide width at each corner portion. Part 22A.

(Fifth Embodiment)

In the first to fourth embodiments described above, one portion of the lid opening portion 24 is shared and continuously formed on both sides of the steam discharge portion 25. However, it is of course also possible to separate these. For example, it is a matter of course that the steam discharge portion 25 is formed in at least one of the four corner portions of the flange portion 22, and the lid opening portion 24 is formed at at least one of the other corner portions.

The present invention has been described above using the embodiments. However, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various changes or modifications can be made to the above-described embodiments. Further, it is obvious that the form in which various changes or improvements are applied is also included in the technical scope of the present invention.

10‧‧‧Microwave appliances

20‧‧‧ Appliance body

21‧‧‧ openings

22‧‧‧Flange

22A‧‧‧ Wide section

23‧‧‧Hot Fusion Department

23A‧‧‧First Thermal Fusion Unit (First Embodiment)

23B‧‧‧Second heat fusion unit (first embodiment)

24‧‧‧ Cover opening

25‧‧‧Steam discharge department

27‧‧ ‧ step

50‧‧‧ cover

Claims (13)

An apparatus for a microwave oven, comprising: an appliance body having an opening at an upper portion thereof; a flange portion formed to extend outward from the opening of the fixture body; and a heat fusion portion extending over the flange portion The surface of the surface is rib-shaped and thermally fused with the film-shaped lid that blocks the opening; the heat-fusion portion has a first heat-fusion portion that is generated by the steam generated in the apparatus body. At the time of pressure, the heat is fused with the cover body to break the steam, and the second heat fusion portion is wider than the first heat fusion portion. The apparatus for microwave oven according to claim 1, wherein the first heat fusion portion has a V-shaped portion that is expanded outward; the flange portion is on both sides of the first heat fusion portion and outside the second heat fusion portion. The area has a recess. An apparatus for a microwave oven, comprising: an appliance body having an opening at an upper portion thereof; a flange portion formed to extend outward from the opening of the fixture body; and a heat fusion portion extending over the flange portion The surface of the surface is rib-shaped and thermally fused with the film-shaped lid that blocks the opening; the heat-fusion portion has a steam discharge portion that is when the steam generated in the apparatus body reaches a certain pressure. And the heat is merged with the cover body to break the steam to discharge the steam; the steam discharge portion has a V-shaped portion that expands toward the outside in a plan view, in a side view At this time, the front end located on the inner side of the V-shaped portion is inclined toward the opening. The apparatus for microwave oven according to claim 3, wherein the flange portion has a concave portion in a region on both sides of the steam discharge portion and on an outer side of the heat fusion portion. The apparatus for microwave oven according to claim 1 or 3, wherein the flange portion is formed to be inclined downward with an extending end thereof, and the heat fusion portion is formed such that an upper surface thereof is horizontal. The apparatus for microwave oven according to claim 1 or 3, wherein the apparatus body has a stepped portion on a side surface thereof along a circumferential direction, and a side surface of the opening side is inclined outward from a vertical direction from the step . An apparatus for a microwave oven, comprising: an appliance body having an opening at an upper portion thereof; a flange portion formed to extend outward from the opening of the fixture body; and a heat fusion portion extending over the flange portion The entire surface of the surface protrudes upward and has a shape, and is thermally fused with the film-shaped lid body that blocks the opening; the heat fusion portion has a first heat fusion portion, and the steam generated in the apparatus body reaches a specific state. At the time of pressure, the heat is fused with the cover body to break the steam, and the second heat fusion portion has a height higher than the height of the first heat fusion portion from the upper surface of the flange portion. The apparatus for microwave oven according to claim 7, wherein the first heat fusion portion has a V-shaped portion that is expanded toward the outside. The microwave oven appliance of claim 7, Further, the gradation portion is located between the first heat fusion portion and the second heat fusion portion, and the height of the protrusion gradually increases from the first heat fusion portion toward the second heat fusion portion. The apparatus for microwave oven according to claim 8, further comprising a gradation portion located between the first heat fusion portion and the second heat fusion portion, and protruding from the first heat fusion portion toward the second heat fusion portion The height gradually becomes higher. The apparatus for microwave oven according to any one of claims 7 to 10, wherein the second heat fusion portion has the protrusion height in a range of 1.1 times to 2.5 times the first heat fusion portion. The apparatus for microwave oven according to any one of claims 7 to 10, wherein the first heat fusion portion has one or more front ends, and the front end is located on the outer side of the apparatus body to be lowered toward the outer edge of the flange portion. tilt. The apparatus for microwave oven according to claim 11, wherein the first heat fusion portion has one or more front ends, and the front end is located outside the apparatus body, and is inclined so as to be lower toward an outer edge of the flange portion.