JP6310820B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device.

  Conventionally, as a cooking device, the cooling air supplied from the exhaust fan is supplied to the exhaust duct with the shutter of the heating chamber exhaust port opened, and the cooling air and the exhaust from the heating chamber exhaust port are mixed in the exhaust duct. Then, there is one that exhausts air from an external exhaust port on the upper surface of the exhaust duct (see, for example, Japanese Patent No. 5517747 (Patent Document 1)).

Japanese Patent No. 5517747

  However, in the above cooking device, exhaust from the heating chamber exhaust port joins at the upper part of the exhaust duct, so that a sufficient dilution area cannot be secured, and exhaust gas that is not sufficiently mixed with the cooling air is exhausted from the external exhaust port. There is a problem that it ends up. When such a hot and humid exhaust with insufficient dilution is discharged from the external exhaust port, the discharged hot and humid air hits the wall surface in the vicinity of the heating cooker, resulting in a problem of high temperature and condensation. .

  Then, the subject of this invention is providing the heating cooker which can dilute reliably the exhaust_gas | exhaustion from a heating chamber with a simple structure, and can prevent that hot and humid air is discharged | emitted outside.

In order to solve the above problems, the heating cooker of the present invention is:
A body casing;
A heating chamber disposed in the main body casing;
An air outlet provided in the upper part of the main body casing;
An exhaust fan that exhausts the exhaust from the heating chamber to the outside through the air outlet;
A first air passage for guiding the air blown from the exhaust fan to the outlet without going through the heating chamber;
A second wind passage for guiding the exhaust from the heating chamber so that the exhaust from the heating chamber joins the first wind passage,
The first wind passage has a dilution area portion on the outlet side from a junction with the second wind passage,
The second wind passage is formed so as to join the first wind passage after guiding the exhaust from the heating chamber to the side opposite to the outlet .
The dilution area portion of the first wind passage is provided in a vertical direction from the joining portion of the first wind passage and the second wind passage toward the outlet port,
The second air passage is formed so as to join the lower end of the dilution area portion of the first air passage after the exhaust from the heating chamber is guided downward .

Moreover, in the heating cooker of one embodiment,
An ejector portion provided at a junction between the first wind passage and the second wind passage is provided.

Moreover, in the heating cooker of one embodiment,
An exhaust damper for opening and closing the second wind passage is provided.

Moreover, in the heating cooker of one embodiment,
A humidity sensor disposed in the second wind passage for detecting the humidity of the exhaust from the heating chamber;
And a drying air passage formed such that when the exhaust damper is closed, a part of the air blown from the exhaust fan passes through the vicinity of the humidity sensor and merges with the first air passage.

  As is clear from the above, according to the present invention, the second wind passage for guiding the exhaust from the heating chamber is connected to the first wind passage for guiding the blown air from the exhaust fan to the blower outlet at the upper portion of the main body casing. By providing a dilution area part in the vertical direction from the merged part to the outlet side, the exhaust from the heating chamber can be reliably diluted with a simple configuration, and hot and humid air is discharged to the outside. A cooking device that can be prevented can be realized.

FIG. 1 is a schematic front view of the heating cooker according to the first embodiment of the present invention when the door is closed. FIG. 2 is a schematic front view of the heating cooker when the door is opened. FIG. 3 is a schematic diagram for explaining the configuration of the main part of the cooking device. FIG. 4A is a schematic diagram for explaining a configuration of a main part including an exhaust unit of the heating cooker. FIG. 4B is a schematic diagram for explaining a configuration of a main part including an air supply unit of the heating cooker. FIG. 5 is a control block diagram of the cooking device. FIG. 6 is a perspective view of a state where a part of the main casing of the heating cooker is removed. FIG. 7 is a perspective view of the heating cooker with a part of the main casing and the exhaust unit cover removed. FIG. 8A is a view of the exhaust unit with the exhaust damper opened as seen from the back side. FIG. 8B is a view for explaining the second air passage of the exhaust unit. FIG. 8C is a view for explaining a third air passage of the exhaust unit. FIG. 8D is a view for explaining a fourth air passage of the exhaust unit. FIG. 8E is a view for explaining a fifth air passage of the exhaust unit. FIG. 8F is a view for explaining the air flow in the exhaust unit. 9 is a cross-sectional view taken along line IX-IX in FIG. 8A. FIG. 10 is a view of the exhaust unit in a state where the exhaust damper is closed as viewed from the back side. 11 is a cross-sectional view taken along line XI-XI in FIG. FIG. 12 is a side view of the main part including the exhaust unit of the heating cooker. FIG. 13 is a top view of the cooking device.

  Hereinafter, the cooking device of the present invention will be described in detail with reference to the illustrated embodiments.

[First Embodiment]
FIG. 1: shows the schematic front view at the time of door closing of the heating cooker of 1st Embodiment of this invention, FIG. 2 has shown the schematic front view at the time of the door opening of the said heating cooker.

  As shown in FIGS. 1 and 2, the heating cooker according to the first embodiment includes a rectangular parallelepiped main body casing 1, a heating chamber 2 provided in the main body casing 1, and having an opening 2a on the front side. And a door 3 for opening and closing the opening 2a of the heating chamber 2.

  An exhaust duct 5 is provided on the upper side and the rear side of the main body casing 1. A dew receptacle 6 is detachably attached to the lower part of the front surface of the main casing 1. The dew receptacle 6 is located below the door 3 and can receive water droplets from the rear surface of the door 3 (surface on the heating chamber 2 side) and the front plate 55 of the main casing 1. In addition, a water supply tank 26 described later is detachably attached to the lower part of the front surface of the main casing 1.

  The door 3 is attached to the front side of the main casing 1 so as to be rotatable about the lower side as an axis. A transparent outer glass 7 having heat resistance is provided on the front surface of the door 3 (the surface opposite to the heating chamber 2). The door 3 has a handle 8 positioned above the outer glass 7 and an operation panel 9 provided on the right side of the outer glass 7.

  The operation panel 9 has a color liquid crystal display unit 10 and a button group 11. The button group 11 includes a cancel key 12 that is pressed when heating is stopped halfway, and a start key 13 that is pressed when heating is started. The operation panel 9 is provided with an infrared light receiving unit 14 that receives infrared rays from a smartphone or the like.

  An object to be heated 15 is accommodated in the heating chamber 2. In addition, metal cooking trays 91 and 92 (shown in FIG. 3) can be taken in and out of the heating chamber 2. Upper shelf receivers 16 </ b> A and 16 </ b> B that support the cooking tray 91 are provided on the inner surfaces of the left side 2 b and the right side 2 c of the heating chamber 2. Moreover, lower shelf receivers 17A and 17B for supporting the cooking tray 92 are provided on the inner surfaces of the right side portion 2c and the left side portion 2b of the heating chamber 2 so as to be positioned below the upper shelf receivers 16A and 16B. .

  Drawing 3 is a mimetic diagram for explaining the composition of the principal part of the above-mentioned cooking-by-heating machine. In FIG. 3, the heating chamber 2 is shown as viewed from the left side. In FIG. 3, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals.

  The heating cooker includes a circulation duct 18, a circulation fan 19, an upper heater 20, an intermediate heater 21, a lower heater 22, a circulation damper 23, a tube pump 25, a water supply tank 26, and a steam generator 70. I have. Each of the upper heater 20, the middle heater 21, and the lower heater 22 is composed of, for example, a sheathed heater. The tube pump 25 is an example of a pump and may be any pump that can switch between a water supply operation and a water discharge operation depending on the driving direction.

  The upper portion 2e of the heating chamber 2 is connected to the rear portion 2d of the heating chamber 2 through an inclined portion 2f that is inclined with respect to the horizontal direction. The inclined portion 2f is provided with a plurality of suction ports 27 so as to face the circulation fan 19 (see FIG. 2). A plurality of upper air outlets 28 are provided in the upper part 2 e of the heating chamber 2. A plurality of first rear outlets 29, second rear outlets 30 and third rear outlets 31 are provided in the rear part 2d of the heating chamber 2 (see FIG. 2). In FIG. 3, only one of the plurality of suction ports 27 is shown. Further, in FIG. 3, only one each of the first rear outlet 29, the second rear outlet 30, and the third rear outlet 31 is shown.

  The circulation duct 18 communicates with the inside of the heating chamber 2 through the suction port 27, the upper outlet 28, and the first to third rear outlets 29-31. The circulation duct 18 is provided from the upper side to the rear side of the heating chamber 2 and extends so as to exhibit an inverted L shape. The width of the circulation duct 18 in the left-right direction is set to be narrower than the width of the heating chamber 2 in the left-right direction.

  The circulation fan 19 is a centrifugal fan and is driven by a circulation fan motor 56. When the circulation fan motor 56 drives the circulation fan 19, air and saturated steam (hereinafter referred to as “air”) in the heating chamber 2 are sucked into the circulation duct 18 from the plurality of suction ports 27 and circulated. Blows out radially outward of the fan 19. More specifically, on the upper side of the circulation fan 19, air or the like flows obliquely upward from the circulation fan 19 and then flows from the rear toward the front. On the other hand, below the circulation fan 19, air or the like flows obliquely downward from the circulation fan 19 and then flows downward from above. The air is an example of a heat medium.

  The upper heater 20 is disposed in the circulation duct 18 and faces the upper part 2 e of the heating chamber 2. The upper heater 20 heats air flowing to the upper outlet 28.

  The middle heater 21 is formed in an annular shape and surrounds the circulation fan 19. The middle heater 21 heats air or the like from the circulation fan 19 toward the upper heater 20 or heats air or the like from the circulation fan 19 toward the lower heater 22.

  The lower heater 22 is disposed in the circulation duct 18 and faces the rear portion 2d of the heating chamber 2. The lower heater 22 heats air flowing to the second and third rear outlets 30 and 31.

  The circulation damper 23 is rotatably provided in the circulation duct 18 and between the middle heater 21 and the lower heater 22. The circulation damper 23 is rotated by a circulation damper motor (not shown).

  Further, the steam generator 70 includes a metal steam generating container 71 having an upper opening, a lid portion 72 made of a heat resistant resin (for example, PPS (polyphenylene sulfide) resin) covering the upper opening of the steam generating container 71, and And a steam generating heater 73 formed of a sheathed heater cast into the bottom 71a of the steam generating container 71. Water from the water supply tank 26 accumulates on the bottom 71a of the steam generation container 71, and a steam generation heater 73 as an example of a heat source heats the water through the steam generation container 71. The saturated steam generated by heating by the steam generating heater 73 flows through the resin steam tube 35 and the metal steam pipe 36 and is supplied into the heating chamber 2 through the plurality of steam supply ports 37. (See FIG. 2). In FIG. 3, only one of the plurality of steam supply ports 37 is shown.

  The saturated steam in the heating chamber 2 is sent to the upper heater 20, the middle heater 21, and the lower heater 22 by the circulation fan 19, and heated by the upper heater 20, the middle heater 21, and the lower heater 22, thereby being 100 ° C. It becomes the above superheated steam.

  A water level sensor 75 comprising a pair of electrode rods 75a and 75b is attached to the lid portion 72. Based on whether or not the electrode rods 75a and 75b are in a conductive state, it is determined whether or not the water level on the bottom 71a of the steam generating container 71 has reached a predetermined water level.

  The tube pump 25 squeezes the elastically deformable water supply / drainage tube 40 made of silicon rubber or the like with a roller (not shown), and causes the water in the water supply tank 26 to flow to the steam generator 70 depending on the driving direction of the roller. Or the water in the steam generator 70 is caused to flow into the water supply tank 26. The water supply / drainage tube 40 is an example of a water supply path.

  The water supply tank 26 has a water supply tank main body 41 and a communication pipe 42. One end of the communication pipe 42 is located in the water supply tank body 41, while the other end of the communication pipe 42 is located outside the water supply tank 26. When the water supply tank 26 is accommodated in the tank cover 43, the other end of the communication pipe 42 is connected to the water supply / drainage tube 40 via the tank joint 44. That is, the inside of the water supply tank main body 41 communicates with the inside of the steam generator 70 via the communication pipe 42 and the like.

  The tube pump 25, the water supply tank 26, the water supply / drainage tube 40, the tank cover 43, and the tank joint portion 44 constitute a water supply device.

  FIG. 4A shows a schematic diagram for explaining a configuration including the exhaust unit 100 of the heating cooker. 4A also shows the heating chamber 2 as viewed from the right side, as in FIG. In FIG. 4A, 91 and 92 are cooking trays, 2e is the upper part of the heating chamber 2, 102 is a second air passage, 103 is a third air passage, and 107 is a dilution area section.

  A natural exhaust port 45 is provided at the lower end of the rear portion 2d of the heating chamber 2 (see FIG. 2). The natural exhaust port 45 communicates with the exhaust duct 5 via the fourth air passage 104 (shown in FIG. 8D) of the exhaust unit 100 (shown in FIGS. 6 and 7) and the like. When the air in the heating chamber 2 becomes excessive, the excess air naturally flows out from the natural exhaust port 45 to the fourth wind passage 104.

  Further, a plurality of forced exhaust ports 48 that are opened and closed by an exhaust damper 49 are provided in the inclined portion 2f of the heating chamber 2 (see FIG. 2). The forced exhaust port 48 communicates with the exhaust duct 5 via an exhaust unit 100 (shown in FIGS. 6 and 7).

  A humidity sensor 53 is attached to the exhaust unit 100. The humidity sensor 53 sends a signal indicating the amount of steam contained in the exhaust gas flowing through the second wind passage 102 to the control device 80 (shown in FIG. 5).

  Moreover, FIG. 4B has shown the schematic diagram for demonstrating the structure containing the air supply unit 90 of the said heating cooker. 4B also shows the heating chamber 2 as viewed from the right side, as in FIG. 4B, the same reference numerals are given to the same components as those in FIG.

  In addition, a plurality of air supply openings 50 that are opened and closed by an air supply damper 51 are provided in the inclined portion 2f of the heating chamber 2 (see FIG. 2). The plurality of air supply ports 50 and the air supply fan 54 are connected via the air supply passage 90a. Further, a cooling damper 52 is provided in the circulation fan cooling air passage 90b branched from the vicinity of the air inlet 50 of the air supply passage 90a. For example, the air supply fan 54 is a sirocco fan.

  FIG. 5 shows a control block diagram of the cooking device.

  The cooking device includes a control device 80 including a microcomputer and an input / output circuit. The control device 80 includes an upper heater 20, an intermediate heater 21, a lower heater 22, a steam generating heater 73, a circulation fan motor 56, an exhaust fan motor 57, an air supply fan motor 58, a circulation damper motor 59, An exhaust damper motor 60, an air supply damper motor 61, a cooling damper 62, an operation panel 9, a humidity sensor 53, an internal temperature sensor 76, a water level sensor 75, a tube pump 25, a magnetron 4, and the like are connected. Further, the control device 80 is based on signals from the operation panel 9, the humidity sensor 53, the internal temperature sensor 76, the water level sensor 75, etc., and the upper heater 20, the middle heater 21, the lower heater 22, the steam generating heater 73, Circulation fan motor 56, exhaust fan motor 57, supply fan motor 58, circulation damper motor 59, exhaust damper motor 60, supply damper motor 61, cooling damper 62, tube pump 25, magnetron 4, etc. To control.

  FIG. 6 is a perspective view of the heating cooker from which the upper surface plate (not shown) and the back surface plate (not shown) covering the upper surface and both side surfaces of the main casing 1 (shown in FIG. 1) are removed as viewed from the rear and obliquely upward. FIG. 7 shows a perspective view of the heating cooker shown in FIG. 6 with the exhaust unit cover 120 removed. 6 and 7, the same reference numerals are assigned to the same components as those in FIGS. 1 to 4B.

  As shown in FIGS. 6 and 7, an exhaust unit 100 is provided on the rear side and the right side (left side in FIGS. 6 and 7) of the heating chamber 2. The exhaust unit 100 includes a housing 110 including an exhaust unit cover 120 and an exhaust fan 47 disposed below the housing 110. A connection port 110 a to which the first exhaust path 46 is connected is provided below the housing 110.

  An exhaust damper motor 60 is disposed on the right side of the upper portion of the exhaust unit 100 (left side in FIGS. 6 and 7). This exhaust damper motor 60 opens and closes an exhaust damper 49 (shown in FIG. 4A) provided in the upper part of the exhaust unit 100.

  An air supply unit 90 is provided on the rear side and the left side (right side in FIG. 6) of the heating chamber 2. The air supply unit 90 is branched from the air supply fan 54 disposed on the lower side, the air supply air passage 90a extending upward from the air supply fan 54, and the air supply air passage 90a. A circulation fan cooling air passage 90b extending toward the circulation fan motor 56 located in the center of the rear upper part of the chamber 2 is provided. Specifically, the air supply unit 90 extends so as to exhibit an inverted L shape above the air supply fan 54.

  For example, in the case of microwave heating in which microwaves are supplied from the magnetron 4 (shown in FIG. 5) into the heating chamber 2, the control device 80 uses the supply damper motor 61 (shown in FIG. 5) to supply a supply damper. 51 (shown in FIG. 4B) is driven to open the supply air passage 90a, and a cooling damper 52 (shown in FIG. 4B) is driven by a cooling damper motor 62 (shown in FIG. 5) to circulate cooling fan cooling air. The passage 90b is closed. Then, by driving the supply fan 54 by the supply fan motor 58 (shown in FIG. 5), all the outside air from the supply fan 54 is supplied into the heating chamber 2 through the supply air passage 90a. The

  On the other hand, saturated steam or superheated steam is supplied to the heating chamber 2 and the heated object is heated by circulating the steam with the circulation fan 19 or the heated object is heated by circulating the air in the heating chamber 2. When the hot air to be circulated is heated, the control device 80 closes the supply air passage 90a by the supply damper 51 (shown in FIG. 4B) and opens the circulation fan cooling air passage 90b by the cooling damper 52. . Then, by driving the air supply fan 54 by the air supply fan motor 58 (shown in FIG. 5), the outside air from the air supply fan 54 circulates through the air supply air passage 90a and the circulation fan cooling air passage 90b. It is supplied toward the fan motor 56.

8A to 8F show views of the exhaust unit 100 with the exhaust damper 49 open as viewed from the back side. 8A to 8F, 60 is an exhaust damper motor, and 140 is an attachment member.
8A to 8F show a state where the exhaust unit cover 120 is removed.

  As shown in FIGS. 8A to 8F, the housing 110 of the exhaust unit 100 (the exhaust unit cover 120 is omitted in FIGS. 8A to 8F) allows a part of the air blown from the exhaust fan 47 to be transferred to the upper portion of the main body casing 1. A first air passage 101 (shown by a thick dotted line in FIG. 8A) for guiding to an outlet 5a (shown in FIGS. 1 and 4A) of the exhaust duct 5 provided in the heating chamber 2 (shown in FIGS. 6 and 7). ) The second wind passage 102 (indicated by the thick dotted line in FIG. 8B) for guiding the exhaust from the forced exhaust port 48 (shown in FIG. 4A) in the heating chamber 2 so that the exhaust from the inside joins the first wind passage 101. A third air passage 103 (shown by a thick dotted line in FIG. 8C) for supplying a part of the air blown from the exhaust fan 47 to the front side in the main body casing 1 (shown in FIG. 1), heating, The exhaust from the natural exhaust port 45 (shown in FIGS. 4A and 4B) in the chamber 2 is exhausted from the first air passage 10. When the fourth air passage 104 (shown by the thick dotted line in FIG. 8D) and the exhaust damper 49 are closed, a part of the air blown from the exhaust fan 47 passes through the vicinity of the humidity sensor 53 when the exhaust damper 49 is closed. The drying air passage 105 (shown by a thick dotted line in FIG. 8E) formed so as to merge with the first air passage 101, the confluence portion of the second air passage 102 and the first air passage 101, the fourth air passage 104, and the first air passage 104 It has an ejector portion 106 (portion surrounded by a thin dotted line) provided at the confluence portion of the one air passage 101.

  The first air passage 101 is provided in the vertical direction from the junction with the second air passage 102 toward the outlet 5 a side of the exhaust duct 5 (upward in FIG. 8A), and the heat that has flowed in from the second air passage 102. A dilution area 107 for diluting the exhaust from the forced exhaust port 48 in the chamber 2 with the air blown from the exhaust fan 47 is provided.

  Further, a humidity sensor 53 that detects the humidity of the exhaust gas from the forced exhaust port 48 (shown in FIGS. 2 and 4A) in the heating chamber 2 is disposed upstream of the second air passage 102 and downstream of the exhaust damper 49. doing.

  Further, the natural exhaust port 45 (shown in FIGS. 2 and 4A) of the heating chamber 2 is connected to the connection port 110a of the exhaust unit 100 via the first exhaust path 46. Also, one end of a cooling duct 130 (shown in FIGS. 6 and 7) disposed on the right side surface (left side in FIGS. 6 and 7) of the heating chamber 2 with the third air passage 103 of the exhaust unit 100 as the outlet 103a. Is connected.

  As shown in FIG. 8F, since the exhaust damper 49 is open, the exhaust from the forced exhaust port 48 (shown in FIGS. 2 and 4A) of the heating chamber 2 flows into the second air passage 102 of the exhaust unit 100. Then, the air is drawn into the airflow of the blown air from the exhaust fan 47 by the ejector unit 106 and merges, and then mixed with the blown air from the exhaust fan 47 in the dilution area unit 107 of the first air passage 101 and diluted. At the same time, the exhaust from the natural exhaust port 45 (shown in FIG. 4A) of the heating chamber 2 flows into the fourth air passage 104 through the first exhaust path 46 and the connection port 110a, and the exhaust fan 47 in the ejector section 106. Then, the air is drawn into the airflow of the blown air from the first air passage 101, and then mixed with the blown air of the exhaust fan 47 in the dilution area portion 107 of the first air passage 101 to be diluted.

  FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. 8A. In FIG. 9, 101a is an outlet of the first air passage 101, and 120 is an exhaust unit cover.

  As shown in FIG. 9, the exhaust damper 49 is rotated as shown by the arrow R1 by the exhaust damper motor 60 (shown in FIGS. 6 and 7), thereby causing the second wind passage 102 (shown in FIGS. 8A to 8F). ). The exhaust fan 47 sucks air from the inside of the main body casing 1 on the right side in the drawing, and supplies blown air to the first air passage 101 and the like. The exhaust fan 47 sucks in air at around 40 ° C. after cooling electrical components (not shown) in the main casing 1.

  For example, when cooking with microwaves supplied from the magnetron 4 in the heating chamber 2, the controller 80 opens the supply air passage 90a of the supply unit 90 by the supply damper 51 (shown in FIG. 4B). The second air passage 102 of the exhaust unit 100 is opened by the exhaust damper 49. Thereby, the vapor | steam which generate | occur | produces from a to-be-heated material in the heating chamber 2 by microwave heating can be discharged | emitted out of a warehouse. Specifically, by opening the exhaust damper 49 and the air supply damper 51 and driving the exhaust fan 47 and the air supply fan 54, the air in the heating chamber 2 is discharged from the forced exhaust port 48 and the natural exhaust port 45 to the exhaust unit 100. Is discharged out of the heating chamber 2.

  10 shows a view of the exhaust unit 100 in a state where the exhaust damper 49 is closed as seen from the back side, and FIG. 11 shows a cross-sectional view taken along the line XI-XI in FIG. 10 and 11, the same reference numerals are assigned to the same components as those of the exhaust unit 100 shown in FIGS. 8A to 8F. FIG. 10 shows a state where the exhaust unit cover 120 is removed.

  As shown in FIG. 10, since the exhaust damper 49 is closed, the exhaust from the forced exhaust port 48 (shown in FIG. 4A) of the heating chamber 2 does not flow into the second air passage 102. Exhaust gas from the natural exhaust port 45 (shown in FIG. 4A) of the heating chamber 2 flows into the fourth air passage 104 via the first exhaust path 46 and the connection port 110a, and is discharged from the exhaust fan 47 by the ejector unit 106. Then, the air is drawn into the airflow of the blown air and merged, and then mixed with the blown air of the exhaust fan 47 in the dilution area portion 107 of the first air passage 101 and diluted.

  Here, after a part of the air blown from the exhaust fan 47 flows in the vicinity of the humidity sensor 53 through the drying air passage 105, the air flows into the first air passage 101 through the second air passage 102 and the ejector portion 106. Join.

  For example, when saturated steam or superheated steam is supplied to the heating chamber 2 and the saturated steam (or superheated steam) in the heating chamber 2 is circulated through the circulation duct 18 by the circulation fan 19 to cook the object to be heated. Then, the control device 80 closes the supply air passage 90a of the supply unit 90 by the supply damper 51 (shown in FIG. 4B), and closes the second air passage 102 of the exhaust unit 100 by the exhaust damper 49. As a result, the saturated steam amount (or superheated steam amount) in the heating chamber 2 is kept constant, and excess saturated steam (or superheated steam) is discharged from the heating chamber 2 to the natural exhaust port 45 and the exhaust unit by the exhaust fan 47. It is discharged out of the heating chamber 2 through 100. Similarly, when air is heated in the heating chamber 2 through the circulation duct 18 to circulate hot air that heats the object to be heated and cooked, the supply air of the air supply unit 90 is supplied by the air supply damper 51. Close the passage 90a.

  FIG. 12 shows a side view of the main part including the exhaust unit 100 of the heating cooker, and FIG. 12 is a view seen from the left side of the heating cooker.

  As shown in FIG. 12, an exhaust passage is provided between the main casing 1 and the exhaust duct 5 by covering the upper outer wall surface of the back plate 200 of the main casing 1 (shown in FIGS. 1 and 2) with the exhaust duct 5. Is forming. Moreover, the exhaust unit 100 is attached to the front side of the back plate 200 to which the exhaust duct 5 is attached, along the rear part 2d and the inclined part 2f of the heating chamber 2.

  The air discharged from the outlet 101a (shown in FIG. 9) of the first air passage 101 of the exhaust unit 100 to the exhaust passage between the main casing 1 and the exhaust duct 5 is forward from the outlet 5a of the exhaust duct 5. Blow out.

  FIG. 13 shows a top view of the cooking device. As shown in FIG. 13, the blowing air from the air outlet 5a of the exhaust duct 5 attached to the back side of the main casing 1 is blown out forward by a plurality of air direction control blades 201 arranged on the left side. A plurality of wind direction control blades 202 arranged on the right side blow out obliquely to the left side toward the front. At this time, exhaust from the heating chamber 2 diluted in the exhaust unit 100 is blown out from the right side of the outlet 5 a of the exhaust duct 5.

  According to the heating cooker having the above configuration, in the exhaust unit 100, in the dilution area portion 107 provided in the first air passage 101 that guides the air blown from the exhaust fan 47 to the air outlet 5 a, The exhaust from the heating chamber 2 that has flowed in is efficiently diluted with the air blown from the exhaust fan 47. Since the dilution area portion 107 provided in the first air passage 101 of the exhaust unit 100 is provided on the outlet 5a side from the junction with the second air passage 102, high-temperature and high-humidity from the heating chamber 2 is provided. The exhaust is efficiently diluted by being mixed with the blown-out air from the exhaust fan 47 in the dilution area 107 while flowing in the first air passage 101 toward the outlet 5a.

  Here, after guiding the exhaust from the inside of the heating chamber 2 to the side opposite to the air outlet 5 a, the second air passage 102 is formed so as to join the first air passage 101, thereby limiting the inside of the main casing 1. In this space, the path length of the dilution area 107 provided in the first air passage 101 of the exhaust unit 100 can be set to an optimum length, and the exhaust from the heating chamber 2 can be reliably performed with a simple configuration. Dilution can be performed and high temperature and high humidity air can be prevented from being discharged to the outside.

  Further, in the ejector section 106 provided at the junction of the first air passage 101 and the second air passage 102 of the exhaust unit 100, the heating chamber 2 is heated by the air blown from the exhaust fan 47 flowing in the first air passage 101. Since the exhaust from the inside is drawn into the first wind passage 101 through the second wind passage 102, the exhaust can be efficiently exhausted from the heating chamber 2.

  Moreover, since the dilution area part 107 of the said 1st wind path 101 is provided in the vertical direction toward the blower outlet 5a side from the confluence | merging part with the 2nd wind path 102, it is hot and humid from the inside of the heating chamber 2. Exhaust gas is efficiently diluted by being mixed with the air blown from the exhaust fan 47 in the dilution area 107 while rising in the first air passage 101 toward the air outlet 5a by convection. Further, the second air passage 102 of the exhaust unit 100 is formed so as to join the lower end of the dilution area portion 107 of the first air passage 101 after guiding the exhaust from the inside of the heating chamber 2 downward. Therefore, in the limited space in the main body casing 1, the longitudinal dimension of the dilution area 107 of the first air passage 101 can be secured longer, and the exhaust from the heating chamber 2 can be more reliably diluted.

  Further, when cooking using microwaves supplied from the magnetron 4 into the heating chamber 2, the exhaust air from the heating chamber 2 is exhausted from the heating chamber 2 by opening the second air passage 102 by the exhaust damper 49. The air flows into the first wind passage 101 through the passage 102 and is diluted by the air blown from the exhaust fan 47. On the other hand, when heating is performed by supplying saturated steam or superheated steam into the heating chamber 2, exhaust from the heating chamber 2 flows out into the second wind passage 102 by closing the second wind passage 102 by the exhaust damper 49. Absent. Thereby, the exhaust damper 49 can be opened and closed in accordance with the cooking method or the like to control the exhaust in the warehouse.

  Further, when the exhaust damper 49 is closed and the exhaust from the inside of the heating chamber 2 is not performed, humidity is not detected by the humidity sensor 53. Therefore, when the exhaust damper 49 is closed, a part of the air blown from the exhaust fan 47 is detected. By forming the drying air passage 105 so as to join the first air passage 101 through the vicinity of the humidity sensor 53, the humidity sensor 53 can be dried by a part of the air blown from the exhaust fan 47. Accordingly, the performance of the humidity sensor 53 can be maintained, and the humidity of the exhaust from the heating chamber 2 can be accurately detected when the exhaust damper 49 is opened and exhausted next time.

  Thereby, the control apparatus 80 can perform the completion | finish determination of heating cooking correctly based on the humidity of the exhaust_gas | exhaustion from the inside of the heating chamber 2 in the heating cooking using a microwave.

[Second Embodiment]
The heating cooker of 2nd Embodiment of this invention is carrying out the structure same as the heating cooker of 1st Embodiment except an exhaust damper, and uses FIGS. 1-6.

  In the heating cooker of the first embodiment, the exhaust damper 49 (shown in FIG. 4A) is provided in the upper part of the exhaust unit 100, whereas in the heating cooker of the second embodiment, the heating chamber 2 is provided. An exhaust damper is arranged in the forced exhaust port 48 provided in the inclined portion 2 f or in the vicinity of the forced exhaust port 48.

  The heating cooker of the second embodiment has the same effect as the heating cooker of the first embodiment.

[Third Embodiment]
The heating cooker of 3rd Embodiment of this invention has the structure same as the heating cooker of 1st Embodiment except for a 2nd wind path, and uses FIGS. 1-6.

  In the cooking device of the first embodiment, the second air passage 102 of the exhaust unit 100 guides the exhaust from the heating chamber 2 downward, and then the lower end of the dilution area portion 107 of the first air passage 101. In the heating cooker according to the third embodiment, after the exhaust from the heating chamber 2 is guided upward (or sideward), the first air passage is formed. The second air passage is formed so as to join the lower end of the dilution area portion 101 of 101.

  The heating cooker of the said 3rd Embodiment has the point that the longitudinal direction dimension of the dilution area part 107 of the 1st wind path 101 is ensured longer because the 2nd wind path 102 once extended below. Except for it, it has the same effect as the heating cooker of 1st Embodiment.

  In the said 1st-3rd embodiment, although the ejector part 106 was provided in the confluence | merging part of the 1st wind path 101 and the 2nd wind path 102, you may apply this invention to the heating cooker which does not have an ejector part. .

  Moreover, although the said 1st-3rd embodiment demonstrated the heating cooker provided with the exhaust damper 49 which opens and closes the 2nd wind path 102, the heating cooker which is not provided with the exhaust damper which opens and closes a 2nd wind path The present invention may be applied to.

  Further, in the first to third embodiments, when the exhaust damper 49 is closed, a part of the air blown from the exhaust fan 47 passes through the vicinity of the humidity sensor 53 and merges with the first air passage 101. Although the heating cooker provided with the drying air passage 105 has been described, the present invention may be applied to a heating cooker not provided with the drying air passage.

  In the cooking device of the present invention, healthy cooking can be performed by using superheated steam or saturated steam in a microwave oven or the like. For example, in the cooking device of the present invention, superheated steam or saturated steam having a temperature of 100 ° C. or higher is supplied to the food surface, and the superheated steam or saturated steam attached to the food surface is condensed to give a large amount of condensation latent heat to the food. So it can efficiently transfer heat to food. Moreover, when condensed water adheres to the food surface and salt and oil are dropped together with condensed water, salt and oil in the food can be reduced. Furthermore, the heating chamber is filled with superheated steam or saturated steam and becomes in a low oxygen state, so that cooking with reduced oxidation of food is possible. Here, the low oxygen state refers to a state where the volume% of oxygen is 10% or less (for example, 0.5 to 3%) in the heating chamber.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the first to third embodiments, and various modifications can be made within the scope of the present invention.

  The present invention and the embodiment are summarized as follows.

The cooking device of this invention is
A body casing 1;
A heating chamber 2 disposed in the main casing 1;
An air outlet 5a provided in the upper part of the main body casing 1,
An exhaust fan 47 for exhausting the exhaust from the heating chamber 2 to the outside through the outlet 5a;
A first air passage 101 for guiding the air blown from the exhaust fan 47 to the air outlet 5a without going through the heating chamber 2,
A second wind passage 102 for guiding the exhaust from the heating chamber 2 so that the exhaust from the heating chamber 2 merges with the first wind passage 101;
The first air passage 101 has a dilution area 107 on the side of the outlet 5a from the junction with the second air passage 102,
The second air passage 102 is formed so as to join the first air passage 101 after guiding the exhaust from the heating chamber 2 to the opposite side to the air outlet 5a.

  According to the above configuration, in the dilution area portion 107 provided in the first air passage 101 that guides the air blown from the exhaust fan 47 to the air outlet 5a, the exhaust from the inside of the heating chamber 2 that flows in from the second air passage 102. Is diluted with the air blown from the exhaust fan 47. Since the dilution area portion 107 of the first air passage 101 is provided on the outlet 5a side from the junction with the second air passage 102, the hot and humid exhaust from the heating chamber 2 While diluting in the air outlet 101 toward the air outlet 5a, it is efficiently diluted by being mixed with the air blown from the exhaust fan 47 in the dilution area 107. Here, after guiding the exhaust from the inside of the heating chamber 2 to the side opposite to the air outlet 5 a, the second air passage 102 is formed so as to join the first air passage 101, thereby limiting the inside of the main casing 1. In this space, the path length of the dilution area 107 of the first air passage 101 can be set to an optimum length, and the exhaust from the heating chamber 2 can be reliably diluted with a simple configuration. Air can be prevented from being discharged to the outside.

Moreover, in the heating cooker of one embodiment,
An ejector portion 106 provided at a junction between the first wind passage 101 and the second wind passage 102 is provided.

  According to the above embodiment, in the ejector portion 106 provided at the junction of the first air passage 101 and the second air passage 102, the heating chamber 2 is blown by the air blown from the exhaust fan 47 flowing in the first air passage 101. The exhaust from the inside is drawn into the first air passage 101 through the second air passage 102. Thereby, it can exhaust efficiently from the inside of the heating chamber 2. FIG.

Moreover, in the heating cooker of one embodiment,
The dilution area portion 107 of the first air passage is provided in the vertical direction from the junction of the first air passage 101 and the second air passage 102 toward the outlet 5a side,
The second air passage 102 is formed to join the lower end of the dilution area portion 107 of the first air passage 101 after guiding the exhaust from the heating chamber 2 downward.

  According to the above embodiment, the dilution area portion 107 of the first air passage 101 is provided in the vertical direction from the junction with the second air passage 102 toward the outlet 5a side. The high-temperature and high-humidity exhaust gas is efficiently diluted by being mixed with the blown-out air from the exhaust fan 47 in the dilution area 107 while rising in the first air passage 101 toward the air outlet 5a by convection. . Furthermore, the second air passage 102 is formed so as to join the lower end of the dilution area 107 of the first air passage 101 after guiding the exhaust from the inside of the heating chamber 2 downward, so that the main body casing With the limited space within 1, the longitudinal dimension of the dilution area 107 of the first air passage 101 can be secured longer, and the exhaust from the heating chamber 2 can be diluted more reliably.

Moreover, in the heating cooker of one embodiment,
An exhaust damper 49 for opening and closing the second wind passage 102 is provided.

  According to the above-described embodiment, for example, when microwave heating using the magnetron 4 is performed, the exhaust from the heating chamber 2 passes through the second wind passage 102 by opening the second wind passage 102 by the exhaust damper 49. Then, the air flows into the first air passage 101 and is diluted by the air blown from the exhaust fan 47. On the other hand, when heating is performed by supplying saturated steam or superheated steam into the heating chamber 2, the second wind path 102 is closed by the exhaust damper 49, so that the saturated steam or superheated steam in the heating chamber 2 is transferred to the second wind path. 102 does not flow out. In this way, the exhaust in the warehouse can be controlled by opening and closing the exhaust damper 49 according to the cooking method.

Moreover, in the heating cooker of one embodiment,
A humidity sensor 53 that is disposed in the second air passage 102 and detects the humidity of the exhaust from the heating chamber 2;
A drying air passage 105 formed so that when the exhaust damper 49 is closed, a part of the air blown from the exhaust fan 47 merges with the first air passage 101 through the vicinity of the humidity sensor 53. Prepared.

  According to the above embodiment, when the exhaust damper 49 is closed and the exhaust from the inside of the heating chamber 2 is not performed, humidity is not detected by the humidity sensor 53. Therefore, when the exhaust damper 49 is closed, the blowout from the exhaust fan 47 is performed. By forming the drying air passage 105 so that a part of the air merges with the first air passage 101 through the vicinity of the humidity sensor 53, the humidity sensor 53 is dried by a part of the air blown from the exhaust fan 47. be able to. Accordingly, the performance of the humidity sensor 53 can be maintained, and the humidity of the exhaust from the heating chamber 2 can be accurately detected when the exhaust damper 49 is opened and exhausted next time.

DESCRIPTION OF SYMBOLS 1 ... Main body casing 2 ... Heating chamber 2a ... Opening 3 ... Door 4 ... Magnetron 5 ... Exhaust duct 5a ... Outlet 6 ... Dew receptacle 7 ... Outer glass 8 ... Handle 9 ... Operation panel 10 ... Color liquid crystal display part 11 ... Button group 12 ... Cancel key 13 ... Start key 14 ... Infrared light receiving part 15 ... Heated object 16A, 16B ... Upper shelf holder 17A, 17B ... Lower shelf holder 18 ... Circulation duct 19 ... Circulation fan 20 ... Upper heater 21 ... Middle heater 22 ... Lower heater 23 ... Circulating damper 25 ... Tube pump 26 ... Water supply tank 27 ... Suction port 28 ... Upper outlet 29 ... First rear outlet 30 ... Second rear outlet 31 ... Third rear outlet 35 ... Steam tube 36 ... Steam pipe 37 ... Steam supply port 40 ... Water supply / drain tube 41 ... Water supply tank body 42 ... Communication pipe 43 ... Tank cover 44 ... Tank joint part 45 ... However, the exhaust port 46 ... the first exhaust path 47 ... the exhaust fan 48 ... the forced exhaust port 49 ... the exhaust damper 50 ... the air supply port 51 ... the air supply damper 52 ... the cooling damper 53 ... the humidity sensor 54 ... the air supply fan 55 ... the front plate 56 ... Motor for circulation fan 57 ... Motor for exhaust fan
58 ... Motor for air supply fan
59 ... circulation damper motor 60 ... exhaust damper motor 61 ... air supply damper motor 62 ... cooling damper motor 70 ... steam generator 71 ... steam generator 71a ... bottom 72 ... lid part 73 ... steam generator heater 75 ... Water level sensor 75a, 75b ... Electrode rod 76 ... Inside temperature sensor 80 ... Control device 90 ... Air supply unit 90a ... Supply air passage 90b ... Cooling air passage for circulating fan 91, 92 ... Cooking tray 100 ... Exhaust unit 101 ... First Air passage 101a ... Exit 102 ... Second air passage 103 ... Third air passage 104 ... Fourth air passage 105 ... Dry air passage 106 ... Ejector portion 107 ... Dilution area portion 110 ... Housing 110a ... Connection port 120 ... For exhaust unit Cover 130 ... Cooling duct 140 ... Mounting member

Claims (4)

A body casing;
A heating chamber disposed in the main body casing;
An air outlet provided in the upper part of the main body casing;
An exhaust fan that exhausts the exhaust from the heating chamber to the outside through the air outlet;
A first air passage for guiding the air blown from the exhaust fan to the outlet without going through the heating chamber;
A second wind passage for guiding the exhaust from the heating chamber so that the exhaust from the heating chamber joins the first wind passage,
The first wind passage has a dilution area portion on the outlet side from a junction with the second wind passage,
The second wind passage is formed so as to join the first wind passage after guiding the exhaust from the heating chamber to the side opposite to the outlet .
The dilution area portion of the first wind passage is provided in a vertical direction from the joining portion of the first wind passage and the second wind passage toward the outlet port,
The second air passage is formed so as to join the lower end of the dilution area portion of the first air passage after the exhaust from the heating chamber is guided downward. vessel. The heating cooker according to claim 1, wherein
A cooking device comprising an ejector portion provided at a junction between the first air passage and the second air passage. The heating cooker according to claim 1 or 2 ,
A cooking device comprising an exhaust damper that opens and closes the second air passage. The cooking device according to claim 3 ,
A humidity sensor disposed in the second wind passage for detecting the humidity of the exhaust from the heating chamber;
A drying air passage formed such that when the exhaust damper is closed, a part of the air blown from the exhaust fan passes through the vicinity of the humidity sensor and merges with the first air passage. A heating cooker.

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