Oven with a heat circulating device

An oven with a heat-circulating device includes a housing provided with a chamber for roasting and steaming; a motor fixed on a rear surface of a rear wall of the chamber; a fan; a heater; a separating plate positioned in front of the fan; a steaming device; a tray and a cover. The e annular heater and the fan fixed on an inner surface of the rear wall in front of the motor. The steaming device is composed of a connect tube, a pump motor, an outflow tube and a heating case for heating the water filled in the heating case for producing steam to be blown and circulated by the fan also blowing the hot air to circulate in a balanced condition around the chamber and a food placed to be roasted and steamed synchronously, with the food not losing all water contained.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to an oven with a heat circulating device, particularly to one provided with a motor for driving a fan to blow air wind to circulate heat generated by an electric heater through a wind hole of a separating plate and also circulating steam produced by a steaming device in the interior of a chamber formed in a housing of the oven, so that food placed in the chamber for roasting may be roasted and steamed at the same time with the water in the roasted and steamed food still keeping some water to be eaten with delicious taste.

2. Description of the Prior Art

A conventional oven1shown inFIG. 1includes a heater11in the bottom or in the interior of a housing, a roast frame10for supporting a food thereon, with a heater turned on for roasting the food. However, the roast frame10is stationary, and the heat in the oven may be not circulate in a balanced condition, with the front portion of the interior being not as hot as the rear portion of the interior chamber to cause uneven roasting to the food, which must then be turned over several times, giving rise to troublesome process for roasting job. Further, food roasted in the conventional oven may lose almost all water contained in the food after finished in roasting, becoming comparatively hard and dry, quite not tasty.

SUMMARY OF THE INVENTION

The purpose of the invention is to offer an oven with a heat circulating device, which is provided with a motor for driving a fan to blow heat generated by a heater, and a steaming device for generating steam to be blown by the same fan to circulate in the oven and also around a food placed in the oven to be roasted and steamed synchronously so that the finished food may still keep substantial water to be tasty for eating.

The feature of the oven with a heating circulating device is a motor, a fan and a heater for generating hot air wind to circulate in the chamber in the housing of the oven, and a steaming device for generating steam from the water in a center hollow of a heating case supplied by a water tank kept in a tray fitted in a tray recess of the housing and blown by the fan with the air wind so as to roast and steam the food synchronously, letting the roasted and steamed food still keep some water to be eaten with delicious taste.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

A preferred embodiment of an oven with a heat-circulating device in the present invention, as shown inFIGS. 2,3and4, includes a housing2, a motor23, a fan24, a heater25, a separating plate3, a steaming device4, a tray5, a water tank51and a cover6as main components.

The housing2is provided with a chamber20defined by an upper wall, a rear wall and a bottom wall in its interior, a door21combined with a front side, a grip210fixed on the door21, and plural buttons22fixed on a front side of an upper wall on the door21.

The fan24and the heater25are fixed on an inner surface of the rear wall of the chamber20, with the motor23fixed on an outer surface of the rear wall, and with the fan24located just in front of the motor23. The heater25is annular, surrounding the fan24, so the heat generated by the heater25can be blown by the fan24to circulate in the chamber in a balanced condition.

The buttons22are electrically connected with the motor23, the fan24and the heater25for turning on and off those components and adjusting the current to the heater25. Further, the housing2is also provided with a tray recess27formed in a bottom under the bottom wall of the chamber20, and the tray recess27has a water hole270communicating with the chamber20

The separating plate3is positioned vertically in the chamber20, fixed with a screw (N) engaging with a threaded post26horizontally fixed on the rear wall of the chamber20, provided with a threaded hole30aligned to the threaded post26, and a center hole31facing the fan24.

The steaming device4is deposited in the chamber20, composed of a connect tube41, a pump motor42, an outflow tube43, a heating case45, an exhaust passageway46and an adjuster47. The connect tube41has one end extending through a rear wall of the tray recess27and the other end connected with the pump motor42connected with the outflow tube43, which has its end formed with an outlet44located in the chamber20. The heating case45is located below the outlet44, having a center hollow450for keep water to be heated, and the exhaust passageway46is fixed in an upper portion of the chamber20along the upper wall, having one end connected with the adjuster47, which can be handled to adjust the volume of air and steam to be exhausted, having an outlet hole470at its outer end.

The tray5is placed in the tray recess27of the housing2, provided with a water chamber50, and a water tank51formed in a nearly half portion of the tray5beside the water chamber50and provided with a pouring hole510, with a short outlet pipe511fixed at an inner side and connected with the connect tube41of the steaming device4.

The cover6is closed on the tray5, having a hole60aligned to both the water hole270of the tray recess and the water chamber50of the tray5, and screwed with the tray5with a screw.

In using, referring toFIG. 4, water is firstly poured in the water tank51through the pouring hole510, and then the cover6is closed and screwed on the tray5. Then the tray5and the cover6together is placed in the tray recess27of the housing2, with the outflow tube511of the water tank51connected with the connect tube41of the steaming device4, and with the hole60of the cover6aligned to the water hole270of the bottom of the chamber20. Now a food to be roasted is to be placed in the chamber20, and the door21is to be closed up. Then a user handles the buttons20for starting the motor23and the heater25, with the needed temperature adjusted, Then the pump motor42is started to pump the water in the water tank51into the center hollow450of the heating case45via the outflow tube43, and the heating case45is turned on to heat the water in the center hollow450to convert into steam so that the steam coming out of the center hollow450is blown by the fan24driven by the motor23, circulating in a balanced condition around in the chamber20and also around the food placed therein for steaming and roasting the food at the same time. So the food can be tasty, without losing completely its water contained.

Next, if the inner pressure of the chamber20is to be adjusted lower, the adjuster47is handled properly to let the steam in the chamber20leak out through the outlet hole470via the exhaust passageway46. Further, partial steam in the chamber20may be cooled to become water drops to fall down through the water hole270and the hole60of the cover6and finally into the water chamber50of the tray5. In case that the water gathered in the water chamber50is needed to be removed, then the tray5with the cover6is drawn out of the housing2for the purpose, very simple.