EP1898156A1

EP1898156A1 - Steam oven

Info

Publication number: EP1898156A1
Application number: EP06018716A
Authority: EP
Inventors: Ching-Hsiang Wang
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-06
Filing date: 2006-09-06
Publication date: 2008-03-12

Abstract

A steam oven includes an accommodating chamber 21 installed with a driving motor 6 for driving a fan 61 to rotate. An electric heater 62 is positioned around the fan 61, and a holding tray 5 having a water tank 52 received therein is disposed at the bottom of the oven. An electric heating tray 3 is fixed in the accommodating chamber 21, and a duct 25 is connected with the water tank 52 and with a water-feeding pipe 26 above the electric heating tray 3. The housing 2 of the oven has its inner wall provided with a position structure for positioning the plate door 9 of the oven. The driving motor 6 is started to drive the fan 61 to rotate and send hot air out to cooperate with the steam heated in the accommodating chamber 21 for steaming food, keeping moisture of the steamed food. The plate door 9 can be closed by an expansion spring 78 and an elastic engage member 92, preventing hot air from leaking.

Description

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a steam oven, particularly to one provided with a driving motor for driving a fan to rotate to convert the heat energy produced by an electric heater into hot air and send it into the accommodating chamber of the oven through the vent holes of a cover plate to cooperate with steam heated in the accommodating chamber for steaming food, able to maintain the moisture of the steamed food and keep the hot air in the accommodating chamber circulate evenly for roasting and steaming food with balance. In addition, the plate door of the steam oven of this invention can be fully closed to prevent hot air in the accommodating chamber from leaking out.

2. Description of the Prior Art

A conventional roaster oven 1, as shown in Fig. 1, is installed with electric heating tubes 10 at the bottom or at the inner side to produce heat energy for roasting food placed on a roast tray 11. Generally, food to be roasted in the roast tray 11 is placed at a fixed location; therefore, the food can hardly be roasted evenly because the extent of heat energy at each place in the interior of the roaster oven 1 is not the same. For instance, the temperature of a place near the electric heating tube 10 is comparatively high. Under the circumstances, during roasting of food, the plate door 12 of the oven 1 has to be opened frequently in order to turn over the roasted side of the food to let the food roasted evenly, thus increasing much trouble. Conventionally, food is roasted by the heat energy of the electric heating tubes 10; therefore, the roasted food will lose its moisture and become dry and hard with poor taste. To prevent food from becoming dry after roasted, the surface of food has to be sprinkled with some water before the food is placed in the oven to be roasted; nevertheless, if water sprinkled on the surface of the food is too much or uneven, the roasted portion of the food may become excessively soft and tasteless.
In addition, referring to Figs. 2 and 3, the conventional oven 1 is provided with two connecting rods 13 respectively having one end fixed on the inner wall of the oven 1 and the other end secured at the inner side of the plate door by a fastener 16. The connecting rod 13 is bored with a slide groove 14, and the oven 1 has its inner wall fixed with a position shaft 15 inserted in the slide groove 14 of the connecting rod 13. When the plate door 12 is opened, the connecting rod 13, with the position shaft 15 acting as a fulcrum, will be slidably moved outward, and when the plate door 12 is fully opened, the position shaft 15 is positioned at the inner end of the slide groove 14 of the connecting rod 13, as shown in Fig. 2. To close the plate door 12, the plate door 12 has to be forcefully pushed upward to be closed on the front side of the oven 1. Since the fulcrum of the plate door 12 is at the lower side; therefore, after the plate door 12 is closed, the upper side of the plate door 12, due to the weight of the plate door 12, will slightly be opened and unable to be fully closed, as shown in Fig. 3. Thus, during roasting of food, the hot sir in the interior of the oven 1 will escape out through the gap 17 between the oven 1 and the plate door 12, lowering roasting effect.

SUMMARY OF THE INVENTION

The objective of the invention is to offer a steam oven formed with an accommodating chamber in which hot air and steam can be kept circulating evenly, able to roast and steam food with balance and keep the moisture of the steamed food to make the food tasty. In addition, the plate door of the oven can be fully closed to prevent hot air in the accommodating chamber from leaking out.
The first feature of the present invention is an accommodating groove provided at the bottom of the housing of the oven, and the accommodating chamber bored with a draining hole communicating with the accommodating groove. The accommodating groove has its inner wall disposed with a connecting pipe connected with a water-pumping motor having the other end connected with a duct, which has the other end connected with a water feeding pipe inserted into the accommodating chamber. An electric heating tray is installed below the water-feeding pipe in the accommodating chamber and bored with a recessed hollow. The accommodating chamber has its upper side provided with an exhaust passageway connected with regulating device, and the housing has its topside bored with lot of exhaust holes. A holding tray is received in the accommodating groove of the housing and formed with receiving chambers in the interior. A water tank is positioned in one of the receiving chambers of the holding tray, having its upper side bored with an inflow hole and its rear wall bored with an outflow hole fitted therein with a sleeve for combining a connecting pipe. Thus, food roasted and steamed with hot air and steam in the accommodating chamber can keep its moisture and make tasty.
A second feature of the invention is a driving motor installed on the outer wall of the accommodating chamber. The driving motor has its rotating shaft inserted into the accommodating chamber and assembled thereon with a cooling fan. The accommodating chamber has its inner wall fixed with a fan and an electric heater, the fan assembled on the driving motor and the electric heater disposed around the outer circumference of the fan. Further, the housing has its bottom provided with an accommodating groove, and the accommodating chamber is bored with a draining hole communicating with the accommodating groove. The accommodating groove has its inner wall disposed with a connecting pipe connected with a water-pumping motor having the other end connected with a duct, which has the other end connected with a water-feeding pipe inserted into the accommodating chamber. An electric heating tray with a recessed hollow is positioned below the water-feeding pipe in the accommodating chamber. The accommodating chamber has its upper side provided with an exhaust passageway connected with a regulating device, and the housing has its topside bored with numerous exhaust holes. A holding tray is received in the accommodating groove of the housing and formed with receiving chambers in the interior, and a water tank is positioned in one of the receiving chambers of the holding tray. The water tank has its topside bored with an in inflow hole and its rear wall bored with an outflow hole fitted with a sleeve for combining a connecting pipe.
In using, start the driving motor and the electric heater to actuate the fan to operate and the electric heater to produce heat energy. Simultaneously the fan will convert the heat energy produced by the electric heater into hot air and send it to the accommodating chamber through the vent holes of a cover plate. Meanwhile, the hot air will cooperate with the steam heated in the accommodating chamber for steaming food at the same time, able to maintain the moisture of the steamed food and keep the hot air circulating evenly in the accommodating chamber for steaming food with balance.
A third feature of the invention is a fixing base secured on the inner wall of the housing. The fixing base is bored with an arc-shaped slide groove, and has its inner side fixed with a position plate and the upper side disposed with a micro-switch for controlling an illuminator in the accommodating chamber. A roller is fitted in the slide groove, and a swinging arm is pivotally positioned at one side of the fixing base and pivotally combined with the roller in the slide groove. An expansion spring has one end secured on the swinging arm and the other end hooked on the position plate of the fixing base, and the swinging arm has its upper end fixed with a push member for pressing the micro-switch. The fixing base has its outer side fixed with a connecting rod having one end pivotally combined with the roller in the slide groove and swinging arm, and the other end pivotally hooked on a position shaft on the inner wall of the plate door. Further, the fixing base has its outer edge set with a connecting plate having its outer end secured on the inner wall of the plate door. Thus, the plate door can be elastically pulled backward by the expansion spring and completely closed on the housing of the oven by mutual engagement of the elastic engage member fixed on the upper edge of the plate door and the engage groove in the upper inner wall of the housing, able to prevent hot air in the accommodating chamber from leaking out and achieve excellent effect of roasting and steaming food.

BRIEF DESCRIPTION OF DRAWINGS

This invention will be better understood by referring to the accompanying drawings, wherein:

Fig. 1 is a perspective view of a conventional roaster oven;
Fig. 2 is a side-sectional view of the conventional roaster oven having its plate door opened;
Fig. 3 is a side-sectional view of the conventional roaster oven having its plate door closed;
Fig. 4 is an exploded perspective view of the steaming device and the holding tray of a steam oven in the present invention;
Fig. 5 is an exploded perspective view of the regulating device of the steam oven in the present invention;
Fig. 6 is a perspective view of the heat circulation structure of the steam oven in the present invention;
Fig. 7 is a perspective view of the steam oven having its plate door fully closed in the present invention;
Fig. 8 is a partial magnified perspective view of the plate door being opened in the present invention;
Fig. 9 is a side cross-sectional view of the steam oven in the present invention;
Fig. 10 is a partial side-sectional view of the upper edge of the plate door of the steam oven in the present invention;
Fig. 11 is a partial side-sectional view of the upper edge of the plate door, having an elastic engage member on the upper edge pressed downward in the present invention;
Fig. 12 is a front view of the semi-circular through holes of the regulating device in a fully opened condition in the present invention;
Fig. 13 is a front view of the semi-circular through holes of the regulating device in a regulated condition in the present invention;
Fig. 14 is a partial side cross-sectional view of the plate door of the steam oven in a closed condition in the present invention; and
Fig. 15 is a partial side cross-sectional view of the plate door of the steam oven in an opened condition in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

A preferred embodiment of a steam oven in the present invention, as shown in Figs. 4-9, includes a housing 2, an electric heating tray 3, a regulating device 4, a holding tray 5, a driving motor 6, a fixing base 7, a connecting rod 8 and a plate door 9 as main components combined together.
The housing 2 is provided with an accommodating groove 20 at the bottom and formed with an accommodating chamber 21 having a draining hole 22 bored in the interior and communicating with the accommodating groove 20. The accommodating groove 20 of the housing 2 has its inner wall disposed with a connecting pipe 23 connected with a water-pumping motor 24 having the other end connected with a duct 25, which has the other end connected with a water feeding pipe 26 inserted into the accommodating chamber 21.
The electric heating tray 3 with a recessed hollow 30 is positioned below the water feeding pipe 26 in the accommodating chamber 21 and has its outer wall embedded with an electric heating tube 31.
The regulating device 4 is connected with an exhaust passageway 27 provided at the inner upper side of the accommodating chamber 21. The regulating device 4 is composed of a connecting base 40, a blocking member 41, a fixing base 42 and a steam regulating selector 43, as shown in Fig. 5. The connecting base 40 is connected with one end of the exhaust passageway 27, and the fixing base 42 is positioned at one side of the connecting base 40 and formed with a receiving chamber 420 bored with a semi-circular through hole 421 in the interior and also has its center bored with an insert hole 422. The blocking member 41 to be received in the receiving chamber 420 of the fixing base 42 is formed with a semi-circular through hole 410 and has one side fixed with an insert rod 411 to be inserted through the insert hole 422 of the fixing base 42. The steam regulating selector 43 assembled at the outer wall of the housing 1 is provided with a linking rod 430 inserted in the interior of the housing 1 and bored with a lengthwise insert hole 431 for the insert rod 411 of the blocking member 41 to be inserted therein. Further, the housing 1 of the oven has its topside bored with exhaust holes 28 and its front outer side wall disposed with a warning lamp 44, a time control selector 45, a temperature control selector 46 and a function control selector 27.
The holding tray 5 to be received in the accommodating groove 20 of the housing 2 is formed with two receiving chambers 50, 51 in the interior, having a water tank 52 positioned in the first receiving chamber 50. The water tank 52 has its upper side bored with an inflow hole 53 and its rear side bored with an outflow hole 54 fixed with a sleeve 55 for combining the connecting pipe 23 in the housing 2. A cover plate 56 to be covered on the holding tray 5 is bored with an insert hole 57 aligned to the draining hole 22 at the bottom of the housing 2 and the second receiving chamber 51 of the holding tray 5.
The driving motor 6 is installed on the outer wall of the accommodating chamber 21 of the housing 2 for driving a cooling fan 60 to rotate, as shown in Figs. 6 and 9. The driving motor 6 has its rotating shaft extending into the accommodating chamber 21 and disposed thereon with a fan 61. An electric heater 62 is installed around the fan 61 and has its outer circumference secured with plural studs 63. A cover plate 64 to be threadably assembled on the studs 63 in the accommodating chamber 21 is bored with insert holes 65 respectively matching with the studs 63 for assembling the cover plate 64 on the studs 63 by bolts 66. The cover plate 64 is further bored with lots of vent holes 67 exactly positioned in front of the fan 61 and the electric heater 62. Moreover, the accommodating chamber 21 of the housing 2 has its outer wall covered with a wrapping layer 68 and installed with a radiator 69.
The fixing base 7 is positioned upright near an the inner wall of the housing 2 and bored with an arc-shaped slide groove 70, as shown in Figs. 7 and 8. The fixing base 7 has one side provided with a position plate 71 and has its upper side disposed with a micro-switch 72 with a press-contact strip 720 and a contact projection 721 for controlling an illuminator 73 in the accommodating chamber 21. A rolling 74 is assembled in the slide groove 70 of the fixing base 7, and a swinging arm 75 has its lower end pivotally fixed on the fixing base 7 by a pivot 76 and its intermediate portion pivotally combined with the roller 74 in the slide groove 70 of the fixing base 7 and its upper side secured thereon with a push member 77. An extension spring 78 has one end hooked on the swinging arm 75 and the other end hooked on the position plate 71 of the fixing base 7.
The connecting rod 8 is positioned at the outer side of the fixing base 7, having one end pivotally combined with both the roller 74 in the slide groove 70 and the swinging arm 75 and the other end formed with a hook 80 hooked on a position shaft 90 of the plate door 9. The fixing base 7 further has its outer edge secured with a connecting plate 79 extending outward to be fixed at the inner side of the plate door 9 by a pivot 94. The plate door 9 has its upper edge provided with an elastic engage member 92 with an engage projection 93 to be engaged and positioned in an engage groove 29 in the inner wall of the front upper wall of the housing 2. Furthermore, the plate door 9 is provided with a handle 92.
In using, as shown in Figs. 4-15, firstly, pour water into the water tank 52 through the inflow hole 53 and position the cover plate 56 on the holding tray 5 and then deposit the holding tray 5 and the cover plate 56 in the accommodating groove 20 of the housing 2 and have the sleeve 55 of the water tank 52 fitted with the connecting pipe 23 in the accommodating chamber 21, letting the insert hole 57 of the cover plate 56 aligned to the draining hole 22 at the bottom of the housing 2. Next, the water in the water tank 52 is pumped by the water-pumping motor 24 and conveyed to the water feeding pipe 26 in the housing 2 to flow into the recessed hollow 30 of the electric heating tray 3. Subsequently, respectively turn the control selectors on the upper outer wall of the housing 2 to set time, temperature and function for roasting and steaming food according to practical needs, and then start the electric heater 62 in the accommodating chamber 21 for heating and make the electric heating tube 31 of the electric heating tray 3 electrically connected for heating the water in the recessed hollow 30 of the electric heating tray 3 to produce steam. Then, start the driving motor 6 to operate and actuate the fan 61 to rotate and convert the heat energy produced by the electric heater 62 into hot air to be sent into the accommodating chamber 21 through the vent holes 67 of the cover plate 64 to cooperate with the steam heated by the electric heating tray 3 for carrying out roasting and steaming of food. By so designing, the hot air in the accommodating chamber 21 can circulate evenly and quickly, able to roast and steam food with balance, prevent steamed food from becoming dry and hard and make the steamed food tasty.
In the course of food steaming, the steam in the accommodating chamber 21 has to be timely exhausted out so as to regulate the inner pressure. The steam volume exhausted can be regulated by steam regulating button 43. For example, when the steam regulating button 43 is turned and the blocking member 41 of the regulating device 4 is actuated to rotate and let its semi-circular through hole 410 aligned to the semi-circular through hole 421 of the fixing base 42, the steam volume exhausted will reach a maximum, as shown in Fig. 12. Thus, the steam regulating selector 43 can be turned to adjust the size of the common opening 49 formed by the semi-circular through hole 410 of the blocking member 41 turned to open the semi-circular through hole 421 of the fixing base 42 to a certain extent for regulating the steam volume exhausted, as shown in Fig. 13. In addition, the steam in the accommodating chamber 21 can be exhausted out of the housing 2 through the exhaust passageway 27, the through hole 410 of the blocking member 41 and through hole 421 of the fixing base 42 as well as the exhaust holes 28 at the topside of the housing 2.
Further, part of the steam in the accommodating chamber 21, after cooling, will be condensed into water to drop to the bottom of the accommodating chamber 21 and then flow into the receiving chamber 51 of the holding tray 5 through both the draining hole 22 at the bottom of the accommodating chamber 21 and the insert hole 57 of the cover plate 56. When the water tank 52 is to be filled with water or when the water gathered in the receiving chamber 51 of the holding tray 5 is to be poured out, simply draw out the holding tray 5 from the accommodating groove 20 at the bottom of the housing 2.
Furthermore, to open the plate door 9 of the oven, as shown in Fig. 11, only press down the elastic engage member 92 on the upper edge of the plate door 9 to disengage it from the engage groove 29 in the upper inner wall of the housing 2 and then hold the handle 94 to open the plate door 9. When the plate door 9, with the pivot 91 of the connecting plate 79 serving as a fulcrum, is turned open, the connecting rod 8 having one end hooked on the inner position shaft 90 of plate door 9 will be moved outward together with the plate door 9. Simultaneously, the inner end of the connecting rod 8, which is pivotally connected with the roller 74, will actuate both the roller 74 and the upper end of the swinging arm 75 to move along the slide groove 70, and meanwhile the swinging arm 75, with the pivot 76 acting as a fulcrum, will be turned outward and actuate the expansion spring 78 to be in an elastically extended state, as shown in Figs. 14 and 15. When the swinging arm 75 is turned outward, the push member 77 at the upper end of the swinging arm 75 will be moved away from the micro-switch 72, and at this time the micro-switch 72 will be off and the illuminator 73 in the accommodating chamber 21 will be turned off. When the plate door 9 is fully opened, the roller 74 of the connecting rod 8 and the swinging arm 75 will be positioned at the outer end of the slide groove 70.
To close the plate door 9, only slightly push the plate door 9 backward. The plate door 9, with the pivot 91 on the connecting plate 79 acting as a fulcrum, will be reversely turned inward and the expansion spring 78 will recover its elastic force and pull the swinging arm 75 backward. In the meantime, the swinging arm 75, with the pivot 76 serving as a fulcrum, will be turned reversely to actuate the roller 74 and the connecting rod 8 to move backward along the slide groove 70 until the plate door 9 is closed completely. At this time, the push member 77 on the upper edge of the swinging arm 75 will push against the press-contact strip 720 of the micro-switch 72 to press the contact projection 721 to turn the micro-switch 72 on and the illuminator 73 in the accommodating chamber be turned on for facilitating a user to watch the condition of food being roasted and steamed in the accommodating chamber 21. When the plate door 9 is closed, the elastic engage member 92 at the upper edge of the plate door 9 will be elastically compressed by the upper inner wall of the housing 2, and after the engage projection 93 of the elastic engage member 92 is positioned in the engage groove 29 of the housing 2, as shown in Fig. 10, the elastic engage member 92 will recover its resilience and force the engage projection 93 to be firmly engaged in the engage groove 29 to make the upper portion of the plate door 9 fully closed on the housing 2. By so designing, the plate door 9 can be pulled backward by the elastic force of the expansion spring 78 and surely closed on the housing 2 by the mutual engagement of the engage projection 93 of the elastic engage member 92 and the engage groove 29 of the housing 2, thus forming no gap between the plate door 9 and the housing 2 to prevent hot air in the accommodating chamber 21 from leaking out and achieve excellent effect of food steaming.
While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.

Claims

A steam oven comprising a housing having its bottom formed with an accommodating groove, said housing formed with an accommodating chamber in its interior, said accommodating chamber having its lower side bored with a draining hole communicating with said accommodating groove, said accommodating groove having its inner wall disposed with a connecting pipe connected with a water-pumping motor, said water-pumping motor having the other end connected with a duct, said duct having the other end connected with a water-feeding pipe inserted into the interior of said housing, an electric heating tray installed below said water-feeding pipe in said housing and provided with a recessed hollow, said housing having its upper side provided with an exhaust passageway connected with a regulating device, said housing having its topside bored with exhaust holes, a holding tray received in said accommodating groove of said housing, said holding tray formed with receiving chambers in the interior, a water tank received in one of said receiving chambers, said water tank having its upper side bored with an inflow hole and its rear wall bored with an outflow hole, said outflow hole fitted with a sleeve for assembling a connecting pipe: and
said steam oven steaming food with hot air and steam in said accommodating chamber, able to keep the moisture of steamed food.
A steam oven comprising a driving motor installed on the outer wall of its accommodating chamber, said driving motor having its rotating shaft disposed with a cooling fan, said accommodating chamber having its inner wall provided with a fan and an electric heater, said rotating shaft of said driving motor extended into said accommodating chamber, said fan assembled on said driving motor, said electric heater positioned around the outer circumference of said fan, said housing having its bottom bored with an accommodating groove, said accommodating chamber bored with a draining hole communicating with said accommodating groove, said accommodating groove having its inner wall set with a connecting pipe connected with a water-pumping motor, said water-pumping motor having the other end connected with a duct, said duct having the other end connected with a water-feeding pipe inserted into said accommodating chamber, an electric heating tray installed below said water-feeding pipe in said accommodating chamber and provided with a recessed hollow, said accommodating chamber having its upper side provided with an exhaust passageway connected with a regulating device, said housing having its topside bored with exhaust holes, a holding tray received in said accommodating groove of said housing, said holding tray formed with receiving chambers in the interior, a water tank received in one of said receiving chambers of said holding tray, said water tank having its upper side bored with an inflow hole and its rear wall bored with an outflow hole, said outflow hole fitted with a sleeve for combining a connecting pipe: and
said driving motor and said electric heater started to actuate said fan to operate, said fan rotated to convert the heat energy produced by said electric heater into hot air to be sent into said accommodating chamber through vent holes of a cover plate, said hot air cooperating with the steam produced in said accommodating chamber for roasting and steaming food, able to keep hot air circulating evenly in said accommodating chamber for roasting and steaming food with balance.
A steam oven comprising a fixing base disposed on the inner wall of its accommodating chamber, said fixing base formed with a slide groove, said fixing base having one side secured with a position plate, said fixing base having its upper edge installed with a micro-switch, said micro-switch controlling a illuminator positioned in said accommodating chamber, a roller fitted in said slide groove of said fixing base and a swinging arm pivotally fixed at one side of said fixing base, said swinging arm pivotally combined with said roller in said slide groove, an expansion spring having one end secured on said swinging arm and the other end hooked on said position plate of said fixing base, said swinging arm having its upper end fixed with a push member for pressing a micro-switch, a connecting rod fixed at the outer side of said fixing base, said connecting rod having one end pivotally assembled with both said roller in said slide groove and said swinging arm, said connecting rod having the other end pivotally hooked on a position shaft on the inner side of said plate door, a connecting plate extending outward from the outer side of said fixing base, said connecting plate having its outer end secured on the inner side of said plate door: and
said plate door able to be elastically drawn backward by said expansion spring and fully closed on said housing by the mutual engagement of an elastic engage member provided at the upper edge of said plate door and an engage groove in the upper inner wall of said housing, able to prevent hot air in said accommodating chamber from leaking out and achieve excellent effect of roasting and steaming.
The steam oven as claimed in Claim 1, wherein said regulating device is composed of a connecting base, a blocking member, a fixing base and a steam regulating selector, said connecting base connected with one end of said exhaust passageway at the upper side of said housing, said fixing base assembled at one side of said connecting base, said fixing base formed with a receiving chamber bored with a through hole in the interior, said fixing base bored with an insert hole in the center, said blocking member received in said receiving chamber of said fixing base, said blocking member bored with a through hole, said blocking member having one side fixed with an insert rod to be inserted through said insert hole of said fixing base, said steam regulating selector assembled on the outer wall of said housing, said steam regulating selector provided with a connecting rod extending in the interior of said housing, said connecting rod of said steam regulating selector bored with a lengthwise insert hole for said insert rod of said blocking member to be inserted and positioned therein.
The steam oven as claimed in Claim 2, wherein said regulating device is composed of a connecting base, a blocking member, a fixing base and a steam regulating selector, said connecting base connected with one end of said exhaust passageway at the upper side of said housing, said fixing base assembled at one side of said connecting base, said fixing base formed with a receiving chamber bored with a through hole in the interior, said fixing base bored with an insert hole in the center, said blocking member received in said receiving chamber of said fixing base, said blocking member bored with a through hole, said blocking member having one side fixed with an insert rod to be inserted through said insert hole of said fixing base, said steam regulating selector assembled on the outer wall of said housing, said steam regulating selector provided with a connecting rod extending in the interior of said housing, said connecting rod of said steam regulating selector bored with a lengthwise insert hole for said insert rod of said blocking member to be inserted and positioned therein.
The steam oven as claimed in Claim 1, wherein a cover plate is covered on said holding tray, said cover plate bored with an insert hole aligned to said draining hole at the bottom of said housing and also to one of said receiving chambers of said holding tray.
The steam oven as claimed in Claim 2, wherein a cover plate is covered on said holding tray, said cover plate bored with an insert hole aligned to said draining hole at the bottom of said housing and also to one of said receiving chambers of said holding tray.
The steam oven as claimed in Claim 1, wherein said electric heating tray has its outer wall embedded with an electric heating tube.
The steam oven as claimed in Claim 2, wherein said electric heating tray has its outer wall embedded with an electric heating tube.
The steam oven as claimed in Claim 2, wherein said accommodating chamber has its inner wall fixed with studs and said cover plate with threaded holes is threadably combined on said studs in said housing, said cover plate bored with said vent holes facing the front side of said fan.
The steam oven as claimed in Claim 3, wherein said slide groove of said fixing base is arc-shaped.
The steam oven as claimed in Claim 3, wherein said housing has the inner wall of its upper front edge bored with an engage groove, and said plate door has its upper edge disposed with an elastic engage member, said elastic engage member fixed thereon with an engage projection to be engaged and positioned in said engage groove in the upper inner wall of said housing.
The steam oven as claimed in Claim 1, wherein said housing has its upper outer wall provided with a warning lamp, a time control selector, a temperature control selector, a steam regulating selector and a function control selector.
The steam oven as claimed in Claim 2, wherein said housing has its upper outer wall provided with a warning lamp, a time control selector, a temperature control selector, a steam regulating selector and a function control selector
The steam oven as claimed in Claim 3, wherein said housing has its upper outer wall provided with a warning lamp, a time control selector, a temperature control selector, a steam regulating selector and a function control selector