JPH04251113A - Portable heater - Google Patents

Abstract

PURPOSE:To carry out easily a change in the mode of installation of groups of heating sources of different types by connecting to a controller a change-over switch that is capable of selecting a combination of standard temperatures corresponding to the mode of installation of the housing of the portable heaters for the groups of heating sources. CONSTITUTION:Portable gas heaters 2, 3 that are a plurality of heating sources are connected respectively to temperature sensors 4, 5 and a controller 6. And one 2 of the portable gas heaters is provided with a burner 22 of a large diameter, and the other portable gas heaters 3 is provided with a burner 32 of a medium size diameter. In this case a change-over switch 8 which is put to the ON side when it reverses the positions of the burner 22 of a large diameter and the burner 32 of a medium size diameter is provided on the substrate on which the electronic parts of the controller 6 are wired. And, in the case in which, for instance, the installation pattern of a group of burners is reversed, the change-over switch 8 is only turned ON and the group of standard temperatures of the temperature sensors 4 on the left side is used for the burner 32 of a medium size diameter, and the group of standard temperatures of the temperature sensor 5 on the right side is used for the burner 22 of a large diameter.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stove with a temperature sensor.

0002

2. Description of the Related Art Generally, gas stoves are equipped with burners of various types in the stove housing so that the user can select a burner suitable for cooking or a burner that is easy to use from among these burners. Furthermore, a technique is known in which the temperature of the outer bottom of a cooking container is detected, and when the detected temperature reaches a reference temperature, the burner is extinguished to prevent the food from burning.

0003

[Problems to be Solved by the Invention] Therefore, the present inventors prototyped a gas stove in which each burner of the stove was provided with a temperature sensor, but the following problems were discovered.

(a) When a large-diameter burner and a small-diameter burner with different burner sizes are arranged, the temperature sensor arranged on the small-diameter burner is more affected by the radiant heat of the flame than the one on the large-diameter burner. It was easy for the burner to go out prematurely, causing the cooking to end halfway.

(a) When a large power burner and a small power burner of the same size but different heating capacities are arranged, the temperature sensor installed on the large power burner is more sensitive to the radiant heat of the flame than the one on the small power burner. It was easily affected and the burner extinguished prematurely.

(c) In a burner with an inner flame port and a burner without an inner flame port, the temperature sensor installed in the burner with an inner flame port is more sensitive to the flame in the inner flame port. The burner extinguished the fire early due to the influence of the fire.

(d) In addition to the above, various combinations of burners have been made, but different types of burners have different effects of flame on the sensor, resulting in the burner extinguishing early or being delayed. It was.

[0008] For this reason, the above-mentioned problems have been solved by setting the reference temperature according to the type of burner so that the controller can appropriately control the heating source, but the following new problems have arisen.

[0009] On stoves of the same series that differ only in the installation pattern of burner groups in the stove housing, for example, a stove with a large diameter burner on the left and a small diameter burner on the right, and a stove with a small diameter burner on the left and a large diameter burner on the right. When manufacturing burner stoves, it is necessary to prepare controllers with matching reference temperature combinations for each installation pattern, which is disadvantageous in terms of cost and production management.

[0010] If it is necessary to change the burner installation pattern due to product stock availability or user requests, the controller may be replaced or all temperature control wiring connected to the controller may be changed. There must be.

[0011] An object of the present invention is to provide a stove in which the installation style of a plurality of different types of heating sources can be easily changed.

[Means to solve the problem]

[0012] In order to solve the above problems, the present invention is arranged in a stove housing and in contact with a plurality of heating sources of different types and the outer bottom of a cooking container arranged above the heating sources. Multiple temperature sensors are installed to detect the temperature of the cooking container, and the signals from each temperature sensor are input, and the detected temperature is checked against a predetermined reference temperature for each heating source to ensure that the detected temperature remains constant. For stoves that have a controller that operates each heating source to keep it within the range or stops heating each heating source, the standard temperature that corresponds to the installation style of the heating source group in the stove housing. A configuration is adopted in which a changeover switch that allows selection of combinations is electrically connected to the controller.

[0013]

[Operation and Effects of the Invention] By operating a changeover switch electrically connected to the controller, a combination of reference temperatures can be set to match the arrangement of the heating source group in the stove housing, so multiple heating sources of different types can be set. It is easy to change the installation style.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

The gas stove A employing the configuration of the present invention has a gas stove 2 which is a heating source disposed in a housing 1.
, 3, its temperature sensors 4 and 5, and the gas burner 2,
3, and a grill 7.

As shown in FIG. 2, the housing 1 has a box shape, and has a grill exhaust section 71 and a burner arrangement section 11 on the top surface.
, 12 are provided, and on the front are a grill opening/closing door 72, on/off buttons 20, 30, 70, and aperture levers 21, 31, 71.
, an operation panel 60 are provided.

The gas stove 2 has a large diameter burner 22 arranged in the burner arrangement part 11, and the large diameter burner 2
2 includes an electromagnetic safety valve 23 and a main valve 2 as shown in FIG.
4. Gas g is supplied through a gas circuit including an orifice 25, a throttle 26, and a switching solenoid valve 27 for temperature maintenance.

The gas stove 3 has a relatively small medium-diameter burner 32 arranged in the burner arrangement part 12, and the medium-diameter burner 32 includes an electromagnetic safety valve 33, a main valve 34, an orifice 35, a throttle 36, a temperature Gas g is supplied through a gas circuit having the same configuration as the gas stove 2 and including a switching solenoid valve 37 for holding.

The temperature sensor 4 has a built-in thermistor 44, and is connected by a spring (not shown) so that the detection part is in close contact with the outer bottom 43 of the pot 42 containing the food 41 placed on the trivet 28. Center hole 221 of diameter burner 22
The force is applied from below to above. Note that this temperature sensor 4 is electrically connected to a thermistor input circuit 61 of the controller 6.

The temperature sensor 5 has the same structure as the temperature sensor 4, and has a built-in thermistor 54, and a detection portion is in close contact with the outer bottom 53 of the pot 52 containing the food 51 placed on the trivet 38. As such, the center hole 321 of the medium-diameter burner 32 is urged upward from below by a spring (not shown). Note that this temperature sensor 5 is electrically connected to a thermistor input circuit 61 of the controller 6.

As shown in FIG. 3, the controller 6 includes a thermistor input circuit 61, a microcomputer 62, an SV drive circuit 63, an M
It includes a V drive circuit 64 and a switch input circuit 65. Further, a changeover switch 8 that is turned on when the positions of the large-diameter burner 22 and the medium-diameter burner 32 are reversed is provided on the board on which the electronic components of the controller 6 are wired.

This controller 6 can be switched to each mode (boiling mode, frying mode, high temperature mode) by operating a button on the operation panel 60, and in this mode, the gas stoves 2 and 3 can be switched.
control.

The simmering mode is used for stews, simmered dishes, and dishes that mainly use water. In this mode, the food to be cooked 41 is heated to a temperature of 130°C (130°C for the medium-diameter burner 32).
40°C) for 10 seconds continuously, the microcomputer 62 closes the electromagnetic safety valve 23 and automatically extinguishes the large diameter burner 22 to prevent the food 41 from burning. A control signal is sent to the drive circuit 63.

[0024] The frying mode is used for cooking that mainly uses oil, such as tempura and fried foods. In this mode, the safe temperature before smoking is 220°C (24°C for medium diameter burner 32).
0° C.), the microcomputer 62 sends a control signal to the SV drive circuit 63 to close the electromagnetic safety valve 23 and automatically extinguish the large diameter burner 22 to prevent smoke generation.

[0025] The high temperature mode is used for dishes that require high temperatures, such as roasted dishes and grilled dishes. In this mode, 2
The MV drive circuit 64 turns on and off the switching solenoid valve 27 to control the temperature so as to maintain the temperature at 70°C (270°C for the medium-diameter burner 32), and also maintains the temperature at 290°C (290°C for the medium-diameter burner 32).
0°C), the SV drive circuit 63 immediately closes the electromagnetic safety valve 23 and automatically extinguishes the large diameter burner 22.
The microcomputer 62 sends control signals to the drive circuits 64 and 63.

The microcomputer 62 recognizes the contact state of the selector switch 8 through the input circuit 65, and in the off state, the SV
When sending control signals to the drive circuit 63 and MV drive circuit 64, the set values of the reference temperature group used as an index are as described above, but when the ON state is recognized, the set values of the reference temperature group used as an index are replaced. SV drive circuit 63, MV drive circuit 64
Sends control signals to.

Gas table A has the following effects.

(A) When reversing the installation pattern of the burner groups, simply turn on the changeover switch 8 to change the reference temperature group of the thermistor 44 on the left side in the figure to that for the medium-diameter burner, and change the thermistor 54 on the right side in the figure to the reference temperature group for the medium-diameter burner. Since the standard temperature group for large-diameter burners can be used for large-diameter burners, gas stove manufacturers can produce two types of products by preparing only one type of controller 6 board, which reduces costs and production management. It is advantageous.

(i) After the user purchases gas stove A,
If you change the location or move, the large-diameter burner side becomes the wall of the kitchen, causing the wall to overheat and becoming inconvenient to use. Therefore, change the gas burner on the left to the medium-diameter burner and the gas burner on the right to the large-diameter burner. If a service person wants to make a change, he or she can complete the change by simply swapping the left and right gas burners and turning on the changeover switch 8.

Next, a second embodiment of the present invention will be explained based on FIG. 3.

In this embodiment, the changeover switch 8 is provided on the side of the burner arrangement section 12, and when the protrusion 221 formed at the lower end of the large diameter burner 22 presses the spring 81 of the changeover switch 8, the reference temperature group of the thermistors 44 and 54 is set. is set to switch.

In this embodiment, the switching of the reference temperature group is completed at the same time as the arrangement of the gas burners is changed, so that the effort required for switching is further reduced, and furthermore, it is possible to prevent forgetting to switch.

The present invention includes the following embodiments in addition to the above embodiments.

a. When the plurality of heating sources of different types are burners, the type includes not only the burner size but also the heating capacity of the burner, the presence or absence of an inner flame port, etc., or a combination thereof.

b. In addition to gas-based heating sources,
It may also be something that generates heat using electricity.

c. If there are three or more gas stoves with different specific heating capacities and each equipped with a temperature sensor, the board-mounted changeover switch 8 may be a rotary type or a multiple DIP switch.

[Brief explanation of the drawing]

FIG. 1 is a structural explanatory diagram of a gas table according to a first embodiment of the present invention.

FIG. 2 is an overall view of the gas stove.

FIG. 3 is an explanatory diagram of the controller of the gas table.

FIG. 4 is an explanatory diagram of main parts of a gas table according to a second embodiment of the present invention.

[Explanation of symbols]

1 Stove housing 2, 3 Gas stove (heating source) 4, 5 Temperature sensor 6 Controller 8 Selector switch 42, 52 Pot (cooking container) 43, 53 Outer bottom A Gas stove (stove)

Claims (1)

[Claims] Claim 1: A plurality of heating sources of different types, which are arranged in a stove housing, and which are arranged in contact with the outer bottom of a cooking container arranged above the heating sources to control the temperature of the cooking container. The multiple temperature sensors to be detected and the signals from each temperature sensor are input, and the detected temperature is compared with a predetermined reference temperature for each heating source, and each heating source is adjusted so that the detected temperature is within a certain range. In a stove that has a controller that operates the heating source and stops the heating of each heating source, the changeover switch that can select the combination of reference temperatures corresponding to the installation style of the heating source group in the stove housing is installed as described above. A stove characterized by being electrically connected to a controller.