KR20000028812A - Microwave oven - Google Patents

Abstract

PURPOSE: A microwave oven is provided to prevent the inflow of dust or pollutant to the inner part of a device. CONSTITUTION: A microwave oven(1) has an intake hole(21) and vent holes(2,22) formed on the front upper part and covered with a cover(7). The cover has a partition(71) to prevent the mixing of the air sucked via the intake hole with the air vented via the vent holes. The intake hole formed on the bottom of the microwave oven is operated to suck the air into body(4) via the intake hole. The air is vented out of the microwave oven via the vent hole(2) and a fan installed in a middle frame(11) is operated to suck the air into an intake chamber(52) via the intake hole. The air is vented out of the microwave oven by passing through a heating chamber inside a door(3), a ventilation chamber(32) and the vent hole(22).

Description

Heat Cooker {MICROWAVE OVEN}

The present invention relates to a heating cooking apparatus such as a microwave oven, and more particularly, to a heating cooking apparatus configured to suck air into the apparatus and discharge the air to the outside.

In the conventional heat cooking apparatus, since the to-be-heated material, such as food, is heat-cooked, the inside of the apparatus may become high temperature compared with room temperature. Therefore, some conventional heating cooking apparatuses have an inlet port and an exhaust port, and have a mechanism for sucking external air into the apparatus for cooling in the apparatus, and a mechanism for discharging air from the inside of the apparatus to the outside.

However, in the conventional heating cooking apparatus as described above, the intake port and the exhaust port are open even when air intake or exhaust is not performed. Therefore, in the conventional heating cooking apparatus, there is a problem that dust or contaminants enter the inside of the apparatus through an inlet and an exhaust port even when air is not sucked or discharged.

The present invention has been devised in view of the above circumstances, and an object thereof is to provide a heating cooking apparatus in which dust or contaminants do not easily enter the apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the microwave oven of 1st Embodiment of this invention.

FIG. 2 is a view showing a state where it is attached to the cabinet of the microwave oven shown in FIG.

3 is a view showing a state in which the door of the microwave oven shown in FIG. 1 is opened;

4 is a cross-sectional view taken along the line IV-IV of FIG. 1;

5 is a perspective view of the microwave oven illustrated in FIG. 1.

6 is a perspective view of the microwave oven illustrated in FIG. 1.

7 is an enlarged view of the upper right side of the microwave oven shown in FIG.

8 is a plan view in a state where the outer portion of the microwave oven body shown in FIG. 1 is omitted.

9 is an enlarged view of the vicinity of the partition plate of the microwave oven shown in FIG. 1;

10 is an enlarged view of the vicinity of a connection member of the microwave oven shown in FIG. 1;

FIG. 11 is a control block diagram of the microwave oven shown in FIG. 1. FIG.

FIG. 12 shows a control panel of the microwave oven shown in FIG. 1; FIG.

FIG. 13 is a view for explaining a blowing direction of a hood fan of the microwave oven illustrated in FIG. 1. FIG.

14 is a view for explaining the blowing direction of the hood fan of the microwave oven shown in FIG.

FIG. 15 is a view for explaining a blowing direction of a hood fan of the microwave oven shown in FIG. 1; FIG.

16 is a flowchart of a cover opening and closing process of the microwave oven shown in FIG. 1;

17 is a flowchart of a modification of the cover opening and closing process shown in FIG. 16;

* Description of the symbols for the main parts of the drawings *

1: microwave oven 2, 22: exhaust port

7: cover 8: hood fan

21: inlet port 30: heating chamber

33: magnetron 34: fan

51: control panel 53: key input unit

71: partition plate 75: connection member

100: control unit

The heating cooking apparatus according to the present invention according to claim 1 is a heating cooking apparatus having an inlet for sucking air into the heating cooking apparatus and an exhaust port for discharging air to the outside of the heating cooking apparatus. And an openable cover covering the exhaust port.

According to the invention as set forth in claim 1, the intake and exhaust ports can be covered by a cover when the heating cooking apparatus does not perform the intake and exhaust of the air.

Therefore, since it is possible to reduce the chance of dust or contaminants entering the heating cooker, it is possible to provide a heating cooker that does not easily enter dust or contaminants.

The heating cooking apparatus according to the present invention according to claim 2, in addition to the heating cooking apparatus configuration according to the invention according to claim 1, the cover is the heating cooking apparatus through the intake port when the cover is opened. And a partition member for preventing mixing of air sucked into the air and air discharged to the outside of the heating cooking apparatus through the exhaust port.

According to the invention of claim 2, in addition to the action according to the invention of claim 1, when the cover is opened, it is possible to prevent mixing of the air sucked in and the air discharged from the heating cooking apparatus.

Therefore, in addition to the effect according to the invention as set forth in claim 1, when the air intake and discharge for cooling in the apparatus is performed in the heating cooking apparatus, the suction of the discharged warm air is avoided, and the cooling efficiency can be improved.

The heating cooking apparatus according to the present invention according to claim 3, in addition to the heating cooking apparatus configuration according to the invention according to claim 1 or 2, further comprises a device for sucking air in the intake port and exhausting air through the exhaust port. And a fan interlock control means for controlling an opening and closing state of the cover according to a fan and an operation state of the fan.

According to the invention as set forth in claim 3, in addition to the action according to the invention as set forth in claim 1 or 2, the cover is automatically opened and closed in accordance with the operation status of the fan by the operation of the fan linkage control means.

Therefore, in addition to the effect according to the invention according to claim 1 or 2, the use of the heating cooking device is convenient because the opening and closing state of the cover in the heating cooking device is automatically switched appropriately.

The heating cooking apparatus which concerns on this invention of Claim 4, The heating means which heats a to-be-heated thing in addition to the structure of the heating cooking apparatus which concerns on any one of Claims 1-3, and operation | movement of the said heating means. According to the situation characterized in that it further comprises a heating interlocking control means for controlling the opening and closing state of the cover.

According to the invention as claimed in claim 4, in addition to the action according to the invention as claimed in any one of claims 1 to 3, the cover is automatically opened and closed in accordance with the operation of the heating means by the operation of the heating interlock control means.

Therefore, in addition to the effect according to the invention according to any one of claims 1 to 3, the use of the heating cooking device is convenient because the opening and closing state of the cover in the heating cooking device is automatically switched appropriately.

Embodiment of the invention

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail with reference to drawings. In addition, although the following embodiment shows the microwave oven of the type attached to high places, such as a kitchen cabinet, as an example of a heating cooking apparatus, this invention is not limited to this, The movable microwave oven etc. which are not a type installed in a predetermined place are not limited to this. Any heating cooker configured to suck air into the device and discharge the air to the outside may be applied.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the microwave oven of 1st Embodiment of this invention. The external appearance of the microwave oven is shown in FIG. The microwave oven 1 has a front plate 5 and a door 3 on the front of the main body 4. An upper portion of the front plate 5 is provided with an intake port and an exhaust port (inlet port 21 and exhaust ports 2 and 22 described later, omitted in FIG. 1), and a cover 7 is provided to cover the inlet port and the exhaust port. In addition, the front panel 5 is provided with a control panel 51 for the user to input the operation contents of the microwave oven 1. The microwave 1 is attached, for example, just above the stove 83 in the kitchen cabinet 82 as shown in FIG.

3 is a diagram illustrating a state in which the door 3 of the microwave oven 1 of FIG. 1 is opened. In the microwave oven 1, a heating chamber 30 is provided inside the main body 4 and inside the door 3 to store a heated object.

4 is a cross-sectional view taken along the line IV-IV of FIG. 1. 5 is a perspective view of the microwave oven 1 of FIG. 1, in which the outer portion of the main body 4 is omitted in order to describe the internal structure of the microwave oven 1 in detail.

4 and 5, the microwave oven 1 includes an intermediate frame 11 and an aeration passage 12 outside the intermediate frame 11 in the main body 4. In addition, the intermediate frame 11 includes a heating chamber 30, a machine chamber 31 for storing electronic parts (such as the magnetron 33, described later) for heating control, and the air discharged from the heating chamber 30. It is comprised so that the exhaust chamber 32 which may be conveyed may be enclosed. An inlet 40 is formed on the lower surface of the main body 4, which is a wall surface of the air passage 12. Then, two hood fans 8 are provided on the intermediate frame 11. Moreover, the inlet port 21 and the exhaust ports 2 and 22 which are covered by the cover 7 are formed in the upper part of the front plate 5. 10 is a main body guide which guides the air conveyed from the hood fan 8 only to the exhaust port 2. As shown in FIG.

When the hood fan 8 is operated in the microwave oven 1, the cover 7 is in the open state shown in FIG. 5 from the closed state shown in FIG. 1, as shown by the arrows in FIGS. 4 and 5. Similarly, air is sucked into the air passage 12 from the intake port 40, and the air is discharged from the exhaust port 2 to the outside of the microwave oven 1 through the hood fan 8. Moreover, by providing the cover 7 in the front surface of the exhaust port 2, air can be exhausted from the exhaust port 2 to the upper side. As a result, the cover 7 can control the direction in which the air discharged from the exhaust port 2 (and the exhaust port 22) flows. In this way, in the microwave 1, the microwave 1 can be used as a ventilation fan when cooking is performed in the gas stove 83 by sucking air from the intake port 40 and discharging it from the exhaust port.

In addition, the cover 7 is provided with a partition plate 71 and a handle 72. The partition plate 71 is provided to prevent the air discharged from the exhaust port 2 from being sucked directly into the microwave oven 1 from the intake port 21, and the handle 72 manually opens and closes the cover 7. Installed to switch to The handle 72 is provided so as to automatically open or close the cover 7 or to clean the intake port 21 and the exhaust ports 2 and 22 without operating the hood fan 8 or the fan 34. If the member breaks down, the cover 7 can be opened and closed manually. In this embodiment, the partition member which prevents mixing of the air sucked into the heating cooking apparatus through the inlet port and the air discharged to the outside of the heating cooking apparatus through the exhaust port when the cover is opened by the partition plate 71 is provided. Consists of. In addition, although the partition member of this embodiment is a plate body like the partition plate 71, if it has a function which prevents air mixing, a shape is not limited to this.

On the other hand, 52 in FIG. 5 is an intake chamber through which the air sucked in the intake port 21 is conveyed, and is connected with the machine room 32. And the microwave oven 1 is equipped with the fan (fan 34 mentioned later) different from the hood fan 8, and can let air flow in an aspect different from the air flow shown in FIG. 4 and FIG. have. Hereinafter, the air flow in the said other aspect of the microwave oven 1 is demonstrated with reference to FIG.

FIG. 6 is a perspective view in which the outer portion of the main body 4 of the microwave oven 1 as in FIG. 5 is omitted. 6, the air flow in the other aspect mentioned above is shown by the arrow. In addition, in FIG. 6, in order to demonstrate the internal structure of the machine room 31, the intermediate frame 11 is shown broken partly.

The microwave oven 1 includes a magnetron 33 for heating a heated object in the heating chamber 30 and a fan 34 for cooling parts such as the magnetron 33 in the machine chamber 31. And when the fan 34 is operated in the microwave oven 1, the cover 7 is in the open state shown in FIG. 5 from the closed state shown in FIG. 1, and as indicated by the arrows shown in FIG. 6. Air is sucked into the heating chamber 30 through the intake chamber 52 and the machine chamber 31 from the intake port 21, and the air is discharged from the exhaust port 22 to the outside of the microwave oven 1 through the exhaust chamber 32. do.

As described above, in the microwave oven 1, air flows through the hood fan 8 and the fan 34 in different aspects. In the microwave oven 1, when any one of the hood fan 8 or the fan 34 is operated as described later, the cover 7 is automatically opened as shown in Figs. When the operation of the hood fan 8 and the fan 34 stops, the cover 7 is closed as shown in FIG. In addition, in the microwave oven 1, when the heating cooking by the magnetron 33 is performed, the fan 34 automatically operates. In addition, the hood fan 8 can be operated by performing a predetermined key operation on the control panel 51. As a result, the hood fan 8 and the fan 34 operate independently in the microwave oven 1.

Next, the structure of the cover 7 is demonstrated with reference to FIGS. 7-10. 7 is an enlarged view of the upper right side of the microwave oven 1, FIG. 8 is a plan view in the state where the outer part of the microwave oven 1 main body 4 is omitted, and FIG. 9 is a partition plate of the microwave oven 1 71 is an enlarged view of the vicinity.

First, referring to FIGS. 7 to 9, an arc-shaped window 76 is formed on the partition plate 71. In addition, the microwave oven 1 includes an arm 73 in the vicinity of the partition plate 71, and is a stepping motor at a position corresponding to the back side of the intake port 21 while being an upper portion of the wall surface constituting the intake chamber 52. 74). One end of the arm 73 is connected to the stepping motor 74, and the other end is connected to the partition plate 71 via the connecting member 75 and the window 76.

The stepping motor 74 is provided at a place corresponding to the back side of the inlet port 21 in order to suppress the temperature rise of the stepping motor 74. That is, since the intake port 21 in the microwave oven 1 is a place where external air is sucked in, it is thought that temperature is lower than the other places of the microwave oven 1 in which the temperature rises to some extent by heating cooking. Therefore, it is better to install the stepping motor 74 at a location corresponding to the back side of the inlet port 21 than at the location corresponding to the back side of the exhaust port 2 or the exhaust port 22 to increase the temperature of the stepping motor 74. Can be suppressed.

In the microwave oven 1, when the hood fan 8 or the fan 34 is operated, the stepping motor 74 is operated so that the arm 73 is counterclockwise in FIG. 9 centering on the connection portion with the stepping motor 74. The cover 7 is opened. At this time, in order to explain the mechanism of the state change of the cover 7 in detail, the enlarged view at the time of seeing the connection member 75 vicinity of the microwave oven 1 from the front is shown.

The connecting member 75 is attached to the arm 73. Moreover, the connection member 75 is equipped with the 1st groove | channel 77 and the 2nd groove | channel 78 at the upper end, and is provided with the lower groove 79 at the lower end. The first groove 77 and the lower groove 79 have a larger width than the thickness of the partition plate 71, and the second groove has a width the same as the thickness of the partition plate 71. When the hood fan 8 and the fan 34 do not operate, the connecting member 75 fits the partition plate 71 into the first groove 77 and the lower groove 79 as shown in FIG. The second groove 78 is in a state where the partition plate 71 is not fitted.

When the hood fan 8 or the fan 34 is operated to operate the stepping motor 74, the arm 73 first moves upwards, and accordingly the connecting member 75 also moves upwards. As a result, the partition plate 71 is fitted into the second groove 78 and the partition plate 71 is displaced in accordance with the operation of the arm 73. Subsequently, when the stepping motor 74 is operated again, the arm 73 rotates counterclockwise in FIG. 9 around the connection portion with the stepping motor 74, whereby the partition plate 71 also stepping motor 74. The cover 7 is opened by rotating in a counterclockwise direction about the portion overlapping with the center. In addition, when the cover 7 returns to the closed state, the partition plate 71 is fitted into the second groove 78, and the arm 73 centers on the connection portion with the stepping motor 74 by the stepping motor 74. To rotate clockwise in FIG. 9.

On the other hand, since the partition plate 71 is not fitted in the second groove 78 in the state where the hood fan 8 and the fan 34 do not operate, the partition plate 71 is not rotated even if the arm 73 is not rotated. It can be rotated clockwise or counterclockwise in FIG. Thereby, the opening / closing state of the cover 7 can also be switched manually. In addition, when the opening / closing state of the cover 7 is manually switched, the partition plate 71 corresponds to the first groove 77 and the lower groove 79 of the connecting member 75 stopped in the window 76. Will be converted.

As described above, in the microwave oven 1, the cover 7 can automatically switch the open / closed state according to the operating conditions of the hood fan 8 and the fan 34. Hereinafter, the switching of the open / closed state of the cover 7 will be described.

11 is a control block diagram for the microwave oven 1. The microwave oven 1 includes a control unit 100 that controls the overall operation of the microwave oven 1 including a microcomputer.

The control unit 100 is connected to the key input unit 53, the display unit 54, the magnetron 33, the fan 34, the stepping motor 74, and the hood fan 8. In addition, the key input unit 53 is for inputting information by a user or the like, and is composed of various keys on the control panel 51 as shown in FIG. The display unit 54 is composed of, for example, liquid crystal, and is installed on the control panel 51 as shown in FIG. 12 to display the operation status of the microwave oven 1, an input menu, and the like. The control part 100 controls the display part 54, the magnetron 33, the fan 34, the stepping motor 74, and the hood fan 8 according to the information input from the key input part.

Next, the control contents for switching the open / closed state of the cover 7 by the control unit 100 will be described in detail.

Further, in the microwave oven 1, the blowing direction of the hood fan 8 can be changed by changing the installation direction of the hood fan 8, and the switching of the open / closed state of the cover 7 is the blowing direction of the hood fan 8. The aspect depends on. So, first, the blowing direction change of the hood fan 8 will be described before explaining the control contents.

13 to 15 are views for explaining the blowing direction of the hood fan 8 of the microwave oven 1, and the positional relationship between the blowing direction of the hood fan 8 (when arrows in each drawing) and the cover 7 is shown. It is a figure which shows typically. FIG. 13 is a diagram illustrating a case where the blowing direction of the hood fan 8 is directed toward the front of the microwave oven 1 as described above. 14 is a figure which shows the case where the said blowing direction is toward the rear of the microwave oven 1, and FIG. 15 is a figure which shows the case which faces the upper side of the microwave oven 1. As shown in FIG.

The microwave oven 1 is configured such that the blowing direction of the hood fan 8 can be any one of three types shown in FIGS. 13 to 15. Although not shown, openings for discharging air to the outside of the main body 4 are formed in portions corresponding to the air vents of the hood fan 8 on the upper and rear surfaces of the main body 4.

When the blowing direction of the hood fan 8 faces the front of the microwave oven 1 as shown in FIG. 13, opening and closing of the cover 7 is linked to the blowing operation of the hood fan 8 as described above. Needs to be. When the blowing direction of the hood fan 8 is directed toward the front side of the microwave oven 1 as shown in FIG. 14 or 15 on one side thereof, opening and closing of the cover 7 is performed by blowing the hood fan 8. There is no need to link to an action. And the microwave oven 1 is equipped with the fan switch 61 which can detect whether the blowing direction of the hood fan 8 is front or other than the front. In addition, detection of whether a blowing direction is front or other than a front is specifically detected as follows. The fan button 61 is provided with a switch button 62. Moreover, the switch button 62 is provided so that it may be pressed when the hood fan 8 is installed so that the blowing direction may be front, and it is provided so that it may not be pressed when the hood fan 8 is installed so that the blowing direction may be other than the front. . Therefore, the detection is possible.

Next, the processing contents of the cover opening / closing process for switching the opening / closing state of the cover 7 of the control section 100 will be described. 16 is a flowchart of the cover opening and closing process.

First, in S1, it is determined whether or not the fan switch 61 is ON, that is, whether or not the hood fan 8 is installed as shown in FIG. 13 and the switch button 62 is pressed. If it is determined that the fan switch 61 is turned on (YES in S1), the flow advances to S2 to determine whether the hood fan 8 is in operation.

If the hood fan 8 is judged to be in operation (YES in S2), the process proceeds to S3 and returns to S1 with the cover 7 open. On the other hand, if it is determined that the hood fan 8 is not in operation (NO in S2), it proceeds to S4 and determines whether the magnetron 33 is in operation, that is, whether the fan 34 is in operation. If the magnetron 33 is determined to be in operation (YES in S4), the cover 7 is opened in S3, and if it is determined that the magnetron 33 is not in operation (NO in S4), the cover in S5. Return to S1 with (7) in the closed state.

On the other hand, if it is determined in S1 that the fan switch 61 is not turned on (NO in S1), the flow proceeds directly to S4.

According to the above process, when the hood fan 8 is provided as shown in FIG. 13, when the hood fan 8 or the fan 34 is in operation, the cover 7 is opened and the hood fan is opened. If the 8 and the fan 34 are not in operation, the cover 7 is in the closed state. In addition, when the hood fan 8 is provided as shown in FIG. 14 or FIG. 15, when the fan 34 is in operation, the cover 7 is in the open state, and the fan 34 is in operation. Otherwise, the cover 7 is closed.

In this embodiment described above, the control part 100 controls the opening / closing state of the cover 7 according to the operating conditions of the hood fan 8 and the fan 34 in S2-S5 process. In this regard, the fan interlocking control means for controlling the opening and closing state of the cover in accordance with the operating condition of the fan by the controller 100 is configured. In addition, the S2 to S5 processing is performed in the microwave oven 1, so that the fan of the heating cooker is the same as that of the hood fan 8 of the heating means of the heating cooker (which is composed of the magnetron 33 in the present embodiment). The cover can be appropriately opened and closed even when operated in accordance with the heating operation or in the case where the fan 34 is operated independently of the heating operation of the heating means.

Moreover, in this embodiment demonstrated above, the control part 100 controls the opening / closing state of the cover 7 according to the operation | movement state of the magnetron 33 in S3-S5 process. In this regard, the heating interlocking control means for controlling the opening and closing state of the cover in accordance with the operation state of the heating means by the controller 100 is configured. In addition, when the S3 to S5 processing is performed in the microwave oven 1, the heating cooking apparatus is equipped with a fan operated in accordance with the heating operation of the heating means of the heating cooking apparatus, such as the fan 34, or Even when the fan is not provided, the cover can be opened and closed appropriately, and cooling of the inside of the apparatus is enabled.

In addition, in this embodiment mentioned above, when it is determined in S4 that the magnetron 33 is not in operation, the cover 7 is in a closed state in S5. Therefore, when the operation of the magnetron 33 is stopped, the cover 7 is in a closed state. However, this embodiment is not limited to this. That is, "depending on the operation state of a heating means" includes the case where the cover 7 is closed, for example, after a predetermined time has elapsed after the operation of the heating means is completed.

Next, the modification of this embodiment is demonstrated. In this modification, the operator or the user inputs the blowing direction in the key input unit 53 without installing the fan switch 61 to detect whether or not the blowing direction of the hood fan 8 is forward in the controller 100. Let's do it. In this case, as an example of the input mode of the key input unit 53, a predetermined menu (for example, the option key 53a) is pressed to display a predetermined menu for input of the blowing direction of the hood fan 8 on the display unit 53. And operating a predetermined key there.

Next, the processing contents of the cover opening / closing process for switching the opening / closing state of the cover 7 of the control section 100 in the present modification will be described. 17 is a flowchart of the cover opening and closing process.

First, in S11, it is determined whether or not the blowing direction of the hood fan 8 is input (set) in the front direction (front exhaust) in the key input unit 053. If it is determined that it is set to the front exhaust (YES in S11), the flow advances to S12 to determine whether the hood fan 8 is in operation.

If the hood fan 8 is judged to be in operation (YES in S12), the process proceeds to S13 and returns to S11 with the cover 7 open. On the other hand, if it is determined that the hood fan 8 is not in operation (NO in S12), the flow advances to S14 to determine whether the magnetron 33 is in operation. If the magnetron 33 is determined to be in operation (YES in S14), the cover 7 is opened in S13, and if it is determined that the magnetron 33 is not in operation (NO in S14), the cover in S15. Return to S11 with (7) in the closed state. If it is determined that the forward exhaust is not set in S11 (NO in S11), the flow proceeds directly to S14.

In the present modification described above, the fan switch 61 can be omitted by providing the key input unit 53 with a function of inputting the blowing direction of the hood fan 8.

The embodiments disclosed herein are to be considered in all respects only as illustrative and not restrictive. The scope of the present invention is defined by the claims rather than the above description and includes all changes within the meaning and range equivalent to the claims.

According to the present invention, there is provided a heating cooking apparatus in which dust or contaminants do not easily enter the apparatus.

Claims (5)

A heating cooker having an inlet for sucking air into the heating cooker and an exhaust port for discharging air to the outside of the heating cooker, And an openable and coverable cover covering the intake port and the exhaust port. The method of claim 1, The cover is provided with a partition member for preventing mixing of the air sucked into the heating cooking apparatus through the inlet port and the air discharged out of the heating cooker through the exhaust port when the cover is opened. Heating cooker. The method according to claim 1 or 2, A fan for sucking air in the inlet and exhausting air through the exhaust port; And a fan linkage control means for controlling the opening and closing state of the cover according to the operating condition of the fan. The method according to claim 1 or 2, Heating means for heating the heated object; And a heating interlocking control means for controlling the opening and closing state of the cover according to the operating condition of the heating means. The method of claim 3, wherein Heating means for heating the heated object; And a heating interlocking control means for controlling the opening and closing state of the cover according to the operating condition of the heating means.