JPH05616B2 - - 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 introduced 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.
A known type is equipped with 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 guided into the cooking chamber to heat and cook the food in the chamber. Also known is one in which hot water can be supplied using hot air from a burner that supplies hot air into the heating cooking chamber. (Utility Model Publication No. 3-9849) (Problems to be Solved by the Invention) However, in the conventional heating 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. The hot air generated in the combustion chamber due to the operation of the burner is guided into the cooking chamber by a hot air circulation fan provided in the cooking chamber,
A water heater unit including a water supply passage, a hot water outlet passage, and a heat exchanger having water pipes connected to both passages is provided in the main body, and the heat exchanger is provided in the combustion chamber, and a water heater unit is provided in the combustion chamber. A passage is provided for guiding hot air into the 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 water boiler is provided in the exhaust passage. An exhaust fan is provided which operates when the water boiler unit is boiling water.

(Function) In a gas cooker with the above configuration, by operating the hot air circulation fan and operating the gas burner, the hot air generated in the combustion chamber due to the operation of the burner can be transferred without passing through the heat exchanger. It can be guided to the heating cooking chamber and heat cooking can be performed in the heating cooking chamber,
Furthermore, by operating the exhaust fan and operating the gas burner, hot air generated in the combustion chamber due to the operation of the burner can be guided to the heat exchanger to boil water in the water heater unit.

Moreover, when cooking in the heating cooking chamber, the hot air from the combustion chamber can be guided to the cooking chamber without passing through the heat exchanger, and the heat is not taken away by the heat exchanger and flows to the cooking side. It can supply sufficient hot air.

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

Reference numeral 1 designates a cooking device main body, which includes a heating cooking chamber 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 the cooking chamber 5 through a passage 4 on the lower side thereof. 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 cooking chamber 3 is heated by a hot air circulation fan 7 installed at the rear of the cooking chamber 3.
The food in the chamber 3 is heated and cooked. Reference numeral 8 indicates an exhaust duct extending upward from the rear portion of the chamber 3, and reference numeral 9 indicates a cooking plate that can be moved in and out of the chamber 6. The burner 6 includes a combustion plate 6a facing the front of the combustion chamber 5, and a mixing chamber 6b in front of the combustion plate 6a.
This is equipped with a gas nozzle 11 connected to a gas passage 10 and a combustion fan 12 that guides combustion air, so that the entire structure is of a forced combustion type. In the drawing, reference numeral 13 indicates an electromagnetically operated 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, whose circuit is, for example, as shown in FIG. 3, so that when the switch 16 is closed, the valve 13 opens and the burner 6 is operated. did.

By the way, when the switch 16 is closed, the circulation fan 7 and the combustion fan 12 should be operated together, and in preparation for this, each fan motor 7a,
12a is 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 each heating cooking member 3, 4, 5, 6 is installed in the cooking device main body 1.
According to the present invention, in the main body 1, a water supply passage 18,
A water heater unit B is provided, which is composed of a hot water outlet passage 19 and a heat exchanger 21 having a water pipe 20 located between the two passages 18 and 19, and the heat exchanger 21 is provided in the combustion chamber 5. Furthermore, the exhaust passage 22
An exhaust fan 26 that operates when the water heater unit B heats water is provided.

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 passage 4 by the circulation fan 7, which is always activated when cooking is performed in the heating cooking chamber 3.
for heating and cooking guided into the cooking chamber 3 via;
According to the operation of the exhaust fan 26, the heat exchanger 21
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, if water is then supplied through the water supply passage 18, the burner 6 should return to operation.
In order to do this automatically, the water supply passage 18
A water boiling switch 23 consisting of a running water switch for detecting running water is installed in parallel with the above-mentioned cooking switch 16 as shown in FIG. A switch 16a that opens and closes in response to the opening and closing operations of the cooking switch 16 is interposed, and a switch 23a that opens and closes in response to the opening and closing operations of the water heater switch 23 is intervened in the circuit of the fan motor 26a of the exhaust fan 26.

In addition, in FIG. 4, 12a indicates the motor of the combustion fan.

Next, its operation will be explained.

When the cooking switch 16 is closed, the gas burner 6
is activated, the combustion fan 12 is driven, and the circulation fan 7 is also driven, and the hot air generated in the combustion chamber 5 due to the operation of the gas burner 6 is guided to the cooking chamber 3 and heated in the cooking chamber 3. Can cook. At this time, the switch 23a interposed in the circuit of the fan motor 26a of the exhaust fan 26 is open, so the exhaust fan 26 does not operate, and when cooking is performed in the heating cooking chamber 3, heat is transferred to the heat exchanger side. will not be taken away.

Also, open the cooking switch 16 and turn on the heat exchanger 21.
When the water is supplied to the water heater, the water heater switch 23 is closed, the gas burner 6 is operated, the combustion fan 12 is driven, and the exhaust fan 26 is also driven to remove the hot air generated in the combustion chamber 5 due to the operation of the gas burner 6. It is led to an exhaust passage 22 via a heat exchanger 21. Therefore, water boiler unit B can heat water.

In addition, if you stop the water flow, the water heater switch 23
is opened and water boiling in water heater unit B is completed.

In the illustrated example, a water valve 24 is provided in the water supply passage 18, and the water valve 24 is connected to the cooking switch 1 described above.
According to the closed circuit of No. 6, the valve is closed, so that water is not passed through the heat exchanger 21 during cooking.

(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 water pipes connected to both passages is provided in the main body, and the heat exchanger unit is provided in the main body. A container is provided in the combustion chamber, and a passage is provided to guide the hot air in the combustion chamber to the heating cooking chamber without passing through the heat exchanger, and the hot air in the combustion chamber is exhausted to the outside through the heat exchanger. In addition, an exhaust fan that operates when the water heater unit heats water is provided in the exhaust passage, so that by operating the hot air circulation fan and the gas burner, cooking can be completed in the heating cooking chamber. Moreover, by operating the exhaust fan and operating the gas burner, the hot air generated in the combustion chamber due to the operation of the burner can be guided to the heat exchanger to boil water in the water heater unit. Especially when cooking in the heating cooking chamber, the hot air from the combustion chamber can be guided to the heating cooking chamber without passing through the heat exchanger side, and no heat is taken up by the heat exchanger. Therefore, it is possible to supply necessary and sufficient hot air to the heating cooking chamber side, which has the effect of eliminating the problems seen in the conventional example.

[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, FIG. 3 is an enlarged view of a portion thereof, and FIG. 4 is a control circuit diagram thereof. 1...Cooker body, 3...Heating cooking chamber, 5...Combustion chamber, 6...Gas burner, 7...Hot air circulation fan, 18
...Water supply passage, 19...Hot water outlet passage, 20...Water pipe, 21
...Heat exchanger, 24...Fan that operates when boiling water, B...Water boiler unit.

Claims (1)

[Claims] 1 The cooking device main body 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, and heats the hot air generated in the combustion chamber due to the operation of the burner. A hot air circulation fan installed in the cooking chamber is used to guide hot air into the cooking device main body, and the main body includes a water supply passage, a hot water outlet passage, and a heat exchanger having a water pipe connected to both passages. A water heater unit is provided, the heat exchanger is provided in the combustion chamber, and a passage is provided in the combustion chamber to lead hot air to the heating cooking chamber without passing through the heat exchanger, and the hot air in the combustion chamber is heated. A gas cooker comprising an exhaust passage for discharging water to the outside through an exchanger, and an exhaust fan that is operated when boiling water in a water heater unit in the exhaust passage.