JPH03117821A - Gas cooking device - Google Patents

Abstract

PURPOSE:To prevent heat from being taken by a heat exchanger during a cooking operation by a method wherein a passage for guiding heated gas in a combustion chamber to a heating and cooking chamber is provided, a discharging passage for passing heated gas within the combustion chamber through a heat exchanger and discharging it is provided and a fan is arranged in the discharging passage. CONSTITUTION:A gas burner 6 is operated, a forced discharging fan 26 is stopped. Hot gas generated within a combustion chamber 5 is guided by a circulation fan 7 arranged in a heating and cooking chamber 3 into the heating and cooking chamber 3 through a passage 4 so as to operate the forced discharging fan 26. Water is supplied through a water supplying passage 18 and the burner 6 is operated, resulting in that the hot gas generated within the combustion chamber 5 is guided to a heat exchanger 5 and a hot water boiling operation can be attained. Then, if the water supplying operation is stopped, the burner 6 is not operated. In this way, the hot air generated within the combustion chamber 5 is guided by the circulation fan 7 into the cooking chamber 3 when the heating and cooking operation is carried out.

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 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 cooking chamber. Types in which hot air generated in a combustion chamber is introduced into the cooking chamber to heat food in the cooking chamber are known; Some are also known to be able to supply hot water.

(Utility Model Publication No. 3-9849) (Problems to be Solved by the Invention) However, in the conventionally known cooking chamber,
Even when cooking, heat is taken away by the hot water supply side, so the temperature in the cooking chamber becomes insufficient.
To compensate for this, a burner with a large amount of heat must be used, which is disadvantageous and uneconomical. An object of the present invention is to provide a gas cooker free from such problems.

(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, wherein the main body includes a water supply passage, a hot water outlet passage, A water heater unit comprising a heat exchanger having water pipes connected to both passages is provided, and the heat exchanger is provided within the combustion chamber,
A passage is provided in the combustion chamber to guide hot air to the cooking chamber without passing through the heat exchanger, and an exhaust passage is provided to exhaust the hot air in the combustion chamber to the outside through the heat exchanger. The exhaust passage is provided with a fan that operates when the water heater unit heats water.

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

(1) shows a cooking device main body, which is equipped with a cooking chamber (3) in the upper part of the main body (1) that has a door (2) that can be opened and closed in front, and a passage (4) in the lower side of the heating cooking chamber (3). The combustion chamber (5) is connected to this, and the front end of it is the svarna (6).
According to the operation of the burner (6), the hot air generated in the chamber (5) is passed through the passage (4) to the hot air circulation fan provided at the rear of the cooking chamber (3). In step (7), the food is guided into the cooking chamber (3) and the food in the chamber (3) is heated. (8) indicates an exhaust duct extending upward from the rear part of the chamber (3), and (9) indicates 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 it, and a gas nozzle (11) connected to the gas passage (10). The combustion air is guided (combustion fan (12)) to create a forced combustion type structure as a whole. In the drawing, (13) indicates the gas passage (10).
) shows an electromagnetically actuated gas valve interposed in the gas valve (1
3) is connected to its operating power source (17) via a cooking switch (16) that responds to a push button type or other operator (15) on the operation panel (14) on the front of the main body (1). The circuit is, for example, as shown in Figure 3, so that when the switch (1B) is closed, the valve (13) opens and the burner (6) is activated.

By the way, when the switch (16) is closed, the circulation fan (7) and the combustion fan (12) should be able to operate together, and in preparation for this, each fan motor (7a) (1
2a) is connected to the power supply (13) in parallel with the valve (13) as shown in the figure.
17).

The above is not particularly different from the conventional one, and the cooker itself (
1) Each part for heating cooking (3) (4) (5) (
According to the present invention, the main body (1) includes a water supply passage (18);
The heat exchanger (21) has a hot water outlet passage (19) and an intermediate water pipe (20) connected to both passages (18) and (19).
A water heater unit B is provided, and the heat exchanger (21) is provided in the combustion chamber (5), and the heat exchanger (21) is provided in the exhaust passage (22). A fan (26) was installed.

To explain this in detail, in the illustrated case, the water supply passage (18) and the hot water outlet passage (19) extend vertically within the rear space within the main body (1), and the upper surface of the main body (1). The inside of the combustion chamber (5) has an opening (4a) connected to the passageway (4) in the middle of its length. , the heat exchanger (21) is installed behind it, and an exhaust passage (22) is extended at the rear end thereof to join the exhaust duct (8) at its downstream end.

Thus, the hot air generated in the chamber (5) due to the operation of the burner (6) is circulated through the passage (4) by the circulation fan (7), which is always activated when cooking is performed in the cooking chamber (3).
It can be used for heating and cooking, which is guided into the cooking chamber (3) through the fan (2G), and for boiling water, which is guided to the heat exchanger (21) when the fan (2G) is operated. In other words, the burner (6) can be used as a heat source for cooking and a heat source for boiling water.

Incidentally, the burner (6) is the above-mentioned cooking sui-sochi (16).
), the gas valve (13) opens and becomes inoperative; in this case, if water is then supplied through the water supply passage (18), the burner (6) should return to operation; In order to automatically perform this, a water boiling switch (
23) is placed in parallel with the cooking sui sochi (16) as shown in the fourth figure, and furthermore, when the water is being boiled, the circulation fan (7) is automatically deactivated. In order to operate the forced exhaust fan (26) at the same time, a switch (tea) which opens when the cooking switch (16) is opened is connected to the circuit of the fan motor (7a) (12a). shows the combustion fan motor.

In the illustrated example, there is a water valve (24) in the water supply passage (18).
is provided, and the valve is configured to be closed when the above-mentioned cooking sui sochi (16) is closed, thus preventing water from being inadvertently supplied to the water supply passage ([8) during cooking. I did it like that.

(Function) To explain its operation, when the gas burner (6) is activated and the forced exhaust fan (26) is stopped, the hot air generated in the chamber (5) is transferred to the cooking chamber (3). By operating the provided circulation fan (7), water can be guided into the heating cooking chamber (3) through the passage (4) to obtain a heating operation, and then water can be supplied through the water supply passage (18). When the burner (6) is activated again, the hot air generated in the chamber (5) is led to the heat exchanger (21) to provide water boiling operation. If the water supply is then 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 water pipes connected to both passages is provided in the main body, and the water heater unit is provided in the main body. A container is provided in the combustion chamber, and a passage is provided for guiding 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, we installed a fan in the exhaust passage that operates when the water heater unit boils water, so that when cooking in the cooking chamber provided in the cooking device, heat is transferred to the heat exchanger side. Therefore, the necessary and sufficient amount of hot air can be supplied to the heating cooking chamber side, which has the effect of eliminating the problems seen in the conventional example.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one 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)...Future B that operates when boiling water...Water boiler unit permit application 3 people from Rinnai Corporation

Claims (1)

[Claims] The cooker 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,
The main body includes a water supply passage, a hot water outlet passage, and both passages. A water heater unit comprising a heat exchanger having a water pipe connected to the heating chamber is provided, the heat exchanger is provided in the combustion chamber, and hot air is supplied to the heating cooking chamber without passing through the heat exchanger. In addition to providing a guide passage, an exhaust passage is provided for exhausting hot air in the combustion chamber to the outside through the heat exchanger, and a fan that operates when boiling water in the water heater unit is further provided in the exhaust passage. A gas cooker.