JPH0373779B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a gas cooker, mainly for oven cooking, in which hot air generated by the operation of a gas burner is guided into a heating cooking chamber.

(Prior art) Conventionally, this type of cooker includes a heating cooking chamber, a combustion chamber connected to the cooking chamber, and a combustion chamber outside the cooking chamber.
It is known that the combustion chamber is equipped with a gas burner at the end thereof, and hot air generated in the combustion chamber due to the operation of the burner is guided into the cooking chamber to heat and cook the food in the chamber. There is also known a device that can supply hot water using hot air from a burner that supplies hot air into the heating cooking chamber.

(Utility Model Publication No. 3-9849) (Problem to be solved by the invention) However, in the conventional cooking chamber, even when cooking is performed, heat is taken away by the hot water supply side. Therefore, the temperature in the heating cooking chamber side tends to be insufficient, and to compensate for this, a burner with a large amount of heat must be used, which is disadvantageous in that it is uneconomical.

An object of the present invention is to provide a gas cooker free of such defects.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a heating cooking chamber, a combustion chamber connected to the cooking chamber outside the cooking chamber, and a gas burner at the end of the combustion chamber. in which hot air generated in the combustion chamber due to the operation of the burner is guided into the cooking chamber; A water heater unit comprising a heat exchanger is provided, the heat exchanger is provided in the combustion chamber, and a passage is provided for guiding hot air in the combustion chamber to the heating cooking chamber without passing through the heat exchanger. An exhaust passage is provided for exhausting the hot air in the combustion chamber to the outside through the heat exchanger, and a shutter is provided which can be switched between closing the hot air inlet side of the heat exchanger and closing the passage.

(Example) Embodiments of the present invention will be described with reference to attached drawings.

Reference numeral 1 denotes a cooking device main body, which includes a heating cooking device 3 having a door 2 that can be opened and closed at the front in the upper part of the main body 1, and a combustion chamber 5 connected to this via a passage 4 on the lower side. a gas burner 6 at the front end, so that upon operation of said burner 6, the hot air generated in said chamber 5 passes through said passage 4 to said cooking chamber 3.
The food in the chamber 3 is heated and cooked. In the drawings, numeral 7 indicates a hot air circulation fan at the rear of the cooking chamber 3, 8 an exhaust duct extending upward from the rear of the chamber 3, and 9 a cooking plate that can be moved in and out of the chamber 6. The burner 6 consists of a combustion plate 6a facing the front of the combustion chamber 5, and a mixing chamber 6b in front of the combustion plate 6a, and a gas nozzle 11 connected to the gas passage 10 and a combustion fan 1 for guiding combustion air.
2, so that the entire structure was of a forced combustion type. In the drawing, reference numeral 13 indicates an electromagnetic gas valve inserted into the gas passage 10, and the gas valve 13 includes:
A cooking switch 1 that responds to a push-button type or other operator 15 on an operation panel 14 on the front side of the main body 1.
6 to the operating power source 17, the circuit of which is, for example, as shown in Figure 3, so that when the switch 16 is closed, the valve 13 opens and the burner 6 is operated. .

By the way, when the switch 16 is closed, the circulation fan 7 and the combustion fan 12 are to be operated together, and in preparation for this, each fan motor 7 is
A and 12a are connected to the power source 17 in parallel with the valve 13 as shown in the figure.

The above is not particularly different from the conventional one, and inside the cooker main body 1 are each heating cooking member 3, 4, 5,
It is equipped with a heating cooker unit A consisting of 6 etc.
According to the present invention, a water supply passage 18 is provided in the main body 1.
and a water heater unit B consisting of a hot water outlet passage 19 and a heat exchanger 21 having an intermediate water pipe 20 connected to both passages 18 and 19, and further closing the hot air inlet side of the heat exchanger 21. A shutter 25 is provided which can be freely switched between the state and the state where the opening 4a of the passage 4 is closed.

To explain this in detail, in the case shown, the water supply passage 1
8 and the hot water outlet passage 19 extend vertically within the rear space of the main body 1, and are led out to the outside via the upper surface of the main body 1 to be connected to a water supply source and a hot water outlet (not shown), and further The inside of the combustion chamber 5 is provided with an opening 4a connected to the passage 4 in the middle part of its length, and the heat exchanger 21 behind the opening 4a, and an exhaust passage 22 is extended at the rear end to connect this to the downstream side. It was arranged to join the exhaust duct 8 at the end.

Thus, the hot air generated in the chamber 5 due to the operation of the burner 6 is transferred to the heat exchanger 21 for heating and for cooking, which is guided into the cooking chamber 3 via the passage 4 by switching the shutter 25. In other words, the burner 6 can be used as a heat source for cooking and as a heat source for boiling water.

Incidentally, the burner 6 is connected to the cooking switch 16 described above.
When the gas valve 13 is opened, the gas valve 13 is opened and becomes inoperable. In this case, the next time water is supplied through the water supply passage 18, the burner 6 should return to operation. In order to achieve this, a water boiling switch 23 consisting of a running water switch for detecting running water is provided in the water supply passage 18, and this is installed in parallel with the cooking switch 16 as shown in the third figure. During boiling, the circulation fan 7 is preferably inactive, and in order to do this automatically, a switch 16a, which opens when the cooking switch 16 is opened, is connected in series with the circuit of the fan motor 7a. Intervention was made. Furthermore, the third
In the figure, 12a indicates the motor of the combustion fan.

In the illustrated example, a water valve 2 is provided in the water supply passage 18.
4, which is configured to close when the cooking switch 16 is closed, thus preventing water from being accidentally supplied to the water supply passage 18 during cooking.

Although the switching means for the shutter 25 is not particularly shown, it is possible, for example, to connect the shutter 25 to the above-mentioned operator 15 and operate in conjunction therewith.

(Function) To explain its operation, the gas burner 6 is operated, and the second shutter 25 is placed in the combustion chamber 5.
If the position is indicated by the solid line in the figure, the hot air generated in the chamber 5 can be guided into the heating cooking chamber 3 through the passage 4 to obtain a heating operation therein, and then be passed through the water supply passage 18. When water is supplied using the burner 6
will be activated again, so at this time the shutter 25
When the position shown by the chain line is set, the hot air generated in the combustion chamber 3 is guided to the heat exchanger 21, and the hot air can be heated there. Next, if the water supply is stopped, the burner 6
becomes inactive and ready for the next operation.

(Effects of the Invention) According to the present invention, a water heater unit including a water supply passage, a hot water outlet passage, and a heat exchanger having a water pipe connected to both passages is provided in the cooking device main body, and The heat exchanger is provided in the combustion chamber, and a passage is provided for guiding hot air in the combustion chamber to the heating cooking chamber without passing through the heat exchanger,
An exhaust passage is provided for exhausting the hot air in the combustion chamber to the outside through the heat exchanger, and a shutter is provided that can be freely switched between closing the hot air inlet side of the heat exchanger and closing the passage. When cooking in the heating cooking chamber provided in the cooking device, no heat is absorbed into the heat exchanger side, and therefore, the necessary and sufficient hot air can be supplied to the heating cooking chamber side, compared to conventional examples. It is effective in eliminating the problems that occur.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an example of the device of the present invention, FIG. 2 is a cutaway side view thereof, and FIG. 3 is a control circuit diagram thereof. 1...Cooker body, 3...Heating cooking chamber, 5...
Combustion chamber, 6... Gas burner, 18... Water supply passage,
19... hot water outlet passage, 20... water pipe, 21... heat exchanger, B... water heater unit.

Claims (1)

[Claims] 1 The cooking device is equipped with a heating cooking chamber, a combustion chamber connected to the cooking chamber outside the cooking chamber, and a gas burner at the end of the combustion chamber, and the hot air generated in the combustion chamber due to the operation of the burner is used for cooking. In a water heater unit that is designed to be introduced into a room, a water heater unit is provided in the main body, which includes a water supply passage, a hot water outlet passage, and a heat exchanger having water pipes connected to both passages. an exhaust passage provided in the combustion chamber, which guides hot air in the combustion chamber to the heating cooking chamber without passing through the heat exchanger, and exhausts the hot air in the combustion chamber to the outside through the heat exchanger; established,
The gas cooker further includes a shutter that can be switched between a state in which the hot air inlet side of the heat exchanger is closed and a state in which the passage is closed.