CN110360598B - Heating cooker - Google Patents
Heating cooker Download PDFInfo
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- CN110360598B CN110360598B CN201910271036.6A CN201910271036A CN110360598B CN 110360598 B CN110360598 B CN 110360598B CN 201910271036 A CN201910271036 A CN 201910271036A CN 110360598 B CN110360598 B CN 110360598B
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- power supply
- heating unit
- gas
- insulation
- insulating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C1/00—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified
- F24C1/02—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified adapted for the use of two or more kinds of fuel or energy supply
- F24C1/04—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified adapted for the use of two or more kinds of fuel or energy supply simultaneously
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Stoves And Ranges (AREA)
- Induction Heating Cooking Devices (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- General Preparation And Processing Of Foods (AREA)
- Cookers (AREA)
Abstract
The invention provides a heating cooker. A heating cooker is provided with: a power supply mechanism connected to a commercial power supply; a gas heating unit that operates using the electric power supplied from the electric power supply mechanism; and an insulating mechanism. The gas heating unit has: a gas heating unit that burns gas to heat the gas; a gas heating control unit that controls heating by the gas heating unit; and a contactable portion that is exposed in a user-contactable state in the vicinity of the gas heating portion, and that includes at least one of an ignition portion that ignites the gas and a flame detection portion that detects a combustion flame of the gas. The insulating mechanism is a mechanism capable of exhibiting insulating performance between the power supply mechanism and the contactable portion. Accordingly, in the heating cooker using the commercial power supply as the power supply source, even if the user touches the contactable portion of the gas heating unit, electric shock can be prevented.
Description
Technical Field
The technology disclosed in this specification relates to a heating cooker.
Background
Patent document 1 discloses a heating cooker having a gas heating unit (gas heating unit). The gas heating unit has: a gas heating unit that burns gas to heat the gas; a gas heating control unit that controls heating by the gas heating unit; and a contact portion exposed in the vicinity of the gas heating portion in a state in which the contact portion can be contacted by a user. The contactable portion includes: an ignition unit that ignites gas; and a flame detection unit that detects a combustion flame of the gas. The heating cooker also has a battery (for example, a primary battery, i.e., a dry battery) as a power supply source. The gas heating unit operates using power supplied from a battery.
[ Prior art documents ]
[ patent document ]
Patent document 1: japanese patent application laid-open No. Hei 11-311409
Disclosure of Invention
[ technical problem to be solved by the invention ]
In such a heating cooker, it is conceivable to use a commercial power supply as a power supply source instead of a battery. In this case, a power supply mechanism connected to a commercial power supply is mounted in the heating cooker instead of the battery. The gas heating unit is operated using the electric power supplied from the electric power supply mechanism.
However, the voltage of the commercial power supply is generally higher than the voltage of a battery such as a dry battery. Therefore, in the heating cooker using the commercial power supply as the power supply source, the possibility of electric shock increases when the user touches the contactable portion of the gas heating unit by mistake, as compared with the case where the battery is the power supply source. In the case of a heating cooker using a commercial power supply as a power supply source, it is required to take measures to prevent an electric shock even if a user touches a contactable portion of a gas heating unit.
In the present specification, a technology is provided that can prevent an electric shock even if a user touches a contactable portion of a gas heating unit in a heating cooker that uses a commercial power supply as a power supply source.
[ technical means for solving problems ]
The heating cooker disclosed in the present specification includes: a power supply mechanism connected to a commercial power supply; a gas heating unit that operates using the electric power supplied from the electric power supply mechanism; and an insulating mechanism. The gas heating unit has: a gas heating unit that burns gas to heat the gas; a gas heating control unit that controls heating by the gas heating unit; and a contactable portion that is exposed in a user-contactable state in the vicinity of the gas heating portion, and that includes at least one of an ignition portion that ignites the gas and a flame detection portion that detects a combustion flame of the gas. The insulating mechanism is a mechanism capable of exhibiting insulating performance between the power supply mechanism and the contactable portion.
According to the above configuration, the heating cooker includes the insulating mechanism capable of exhibiting the insulating performance between the power supply mechanism and the contactable portion. By providing the insulating means, the electric shock of the user is not likely to occur even if the user touches the contactable portion of the gas heating unit. Therefore, according to the above configuration, in the heating cooker using the commercial power supply as the power supply source, even if the user touches the contactable portion of the gas heating unit, the electric shock can be prevented.
The insulating mechanism may be a mechanism capable of exhibiting an insulating performance equal to or greater than an insulating performance corresponding to double insulation between the power supply mechanism and the contactable portion.
Here, "double insulation" may mean insulation composed of both base insulation and additional insulation (refer to JIS standard). The insulating properties of the double insulation are higher than those of the basic insulation. The term "base insulation" may mean insulation (refer to JIS standard) applied to a charging unit (i.e., a portion connected to an electrical system) for base protection against electric shock. The term "additional insulation" may mean an independent insulation added to the base insulation to protect against electric shock when the base insulation is broken (refer to JIS standard).
With this configuration, the insulating mechanism can exhibit an insulating performance equal to or higher than an insulating performance corresponding to double insulation between the power supply mechanism and the contactable portion. Therefore, as compared with the case where an insulation mechanism that exhibits insulation performance corresponding to only 1 piece of base insulation is installed between the power supply mechanism and the contactable portion, high insulation performance can be exhibited. Therefore, according to the above configuration, it is possible to more suitably prevent a situation in which the user gets an electric shock.
The insulation means may also comprise at least 2 separate insulation structures corresponding to double insulation.
Here, the at least 2 independent insulation structures corresponding to the double insulation may be at least 2 basic insulation structures, or may be a combination of at least 1 basic insulation structure and at least 1 additional insulation structure. For example, the 1-piece base insulation structure includes a structure in which a power conversion unit (so-called transformer) that does not directly connect the primary-side and secondary-side wirings is provided. With this configuration, the insulating mechanism can preferably exhibit an insulating performance equal to or higher than the insulating performance of the double insulation.
The insulation means may comprise at least 1 reinforcing insulation structure.
Here, the term "reinforced insulation" may mean a single insulation (refer to JIS standard) applied to a charging portion, which has a protection (action) equivalent to that of double insulation against an electric shock. For example, the reinforced insulation structure includes the following structures: the power conversion unit (so-called transformer) is provided so as not to directly connect the primary-side and secondary-side wirings, and the primary-side and secondary-side wirings are separated by a predetermined distance or more at any position. With this configuration, the insulating mechanism can preferably exhibit an insulating performance equal to or higher than the insulating performance of the double insulation.
The above-described heating cooker may further include an electric heating unit that operates using the electric power supplied from the electric power supply mechanism. The electric heating unit may also have: an electric heating unit that converts electricity into heat to heat; and an electric heating control unit that controls heating by the electric heating unit.
Here, the "electric heating unit" includes various heating units capable of heating a heating object by converting electricity into heat, such as an electric heater (e.g., a heater that converts electricity into joule heat, such as a sheath heater), an IH heater (i.e., a heater that inductively heats the heating object (such as a pot) using magnetic force generated by electricity), and the like.
According to this configuration, in the case where the heating cooker includes both the electric heating unit and the gas heating unit that use the commercial power supply as the power supply source, even if the user touches the contactable portion of the gas heating unit, electric shock can be prevented.
The following structure may be adopted: the 1 st unit of the gas heating unit and the electric heating unit is electrically connected to the power supply mechanism, and the 2 nd unit of the gas heating unit and the electric heating unit, which is different from the 1 st unit, is electrically connected to the 1 st unit.
According to this configuration, even when the 2 nd unit fails to operate (for example, when the 2 nd unit fails), the 1 st unit electrically connected to the power supply mechanism can be continuously operated, and therefore, it is possible to prevent a situation in which cooking using the heating cooker is completely disabled during the period in which the 2 nd unit fails to operate.
The gas heating unit and the electric heating unit may be electrically connected to the power supply mechanism, respectively.
According to this configuration, even in a case where one of the gas heating means and the electric heating means is not operated (for example, in a case where a failure occurs in the heating means), the other heating means electrically connected to the electric power supply means can be continuously operated, and therefore, it is possible to prevent a situation where cooking using the heating cooker is not performed at all while the one heating means is not operated.
Drawings
Fig. 1 is a schematic diagram showing a structure of a heating cooker 2 according to embodiment 1.
Fig. 2 is a schematic diagram showing a structure of a heating cooker 102 according to embodiment 2.
Fig. 3 is a schematic diagram showing a structure of a heating cooker 202 according to embodiment 3.
[ instruction of reference ]
2: a heating cooker; 4: a power supply mechanism; 6: an electrical heating unit; 8: a gas heating unit; 10: an electric heating section; 12: an electric heating control section; 20: a gas heating section; 22: a gas heating control unit; 24: a contactable portion; 26: an ignition section; 28: a flame detection unit; 30. 40, 50: a base insulating structure; 60. 70, 80: reinforcing the insulating structure; 102: a heating cooker; 130. 140, 150: a base insulating structure; 160. 170, 180: reinforcing the insulation structure; 202: a heating cooker; 230. 240, 250: a base insulating structure; 260. 270, 280: reinforcing the insulating structure; 300. 400: and an insulating structure.
Detailed Description
(embodiment 1)
The heating cooker 2 of the present embodiment shown in fig. 1 is a heating cooker that operates using a commercial power supply (not shown) as a power supply source. The heating cooker 2 is a hybrid heating cooker capable of performing both electric heating for converting electricity into heat and gas heating for heating by burning gas. As shown in fig. 1, the heating cooker 2 has a power supply mechanism 4, an electric heating unit 6, and a gas heating unit 8. In the present embodiment, the electric heating unit 6 is electrically connected to the power supply mechanism 4, and the gas heating unit 8 is electrically connected to the electric heating unit 6. That is, in other words, the power supply mechanism 4, the electric heating unit 6, and the gas heating unit 8 may be connected in series in this order.
The power supply means 4 is connected to a commercial power supply and supplies power from the commercial power supply to each unit of the heating cooker 2. The power supply mechanism 4 is, for example, a power plug.
The electric heating unit 6 is a heating unit that operates using electric power supplied from the electric power supply mechanism 4. As described above, the electric heating unit 6 is electrically connected to the power supply mechanism 4. The electric heating unit 6 has an electric heating portion 10 and an electric heating control portion 12.
The electric heating unit 10 is a heating unit for heating a placed heating object (for example, a pot) by converting electricity into heat. In the present embodiment, the electric heating unit 10 is a so-called IH heater that inductively heats a heating object (a pot or the like) using magnetic force generated by electricity. In another example, the electric heating unit 10 may be another heater capable of converting electricity into heat, such as an electric heater (e.g., a sheath heater) that converts electricity into joule heat. As shown in fig. 1, the electric heating unit 10 is directly connected to the power supply mechanism 4. The electric heating unit 10 incorporates a converter for converting a high-voltage AC power supply (in this case, a commercial power supply (for example, AC 200V)) into a dc power supply usable by the electric heating unit 10. The electric heating unit 10 heats the object using the dc power converted by the built-in converter.
The electric heating control unit 12 is a control unit that controls heating by the electric heating unit 10. As shown in fig. 1, the electric heating control unit 12 is operated by receiving power supply from a power supply system electrically connected to the power supply mechanism 4 via the base insulation structure 30. The base insulating structure 30 will be described in detail later.
The gas heating unit 8 is also a heating unit that operates using electric power supplied from the electric power supply mechanism 4. As described above, the gas heating unit 8 is electrically connected to the electric heating unit 6. That is, the gas heating unit 8 receives the supply of electric power from the electric power supply mechanism 4 via the electric heating unit 6. The gas heating unit 8 has a gas heating unit 20, a gas heating control unit 22, and a contactable unit 24.
The gas heating unit 20 is a heating unit for heating a heating target (for example, a pot) placed thereon by burning gas. Although not shown, the gas heating unit 20 includes a gas supply line for supplying gas, a burner for burning the supplied gas, and the like. The gas heating control unit 22 is a control unit that controls heating by the gas heating unit 20. The accessible portion 24 is a portion exposed near the gas heating portion 20 in a state accessible to a user. The contactable portion 24 includes: an ignition unit 26 for igniting the gas; and a flame detection unit 28 for detecting a combustion flame of the gas. As shown in fig. 1, the gas heating unit 20, the gas heating control unit 22, and the contact portion 24 also operate by receiving power supply from a power supply system electrically connected to the power supply mechanism 4.
The electric heating control unit 12 and the gas heating control unit 22 each have a communication circuit with an optical coupler. The electric heating control unit 12 and the gas heating control unit 22 perform signal transmission by causing the light emitting diode on the transmitting side to emit light and causing the phototransistor on the receiving side to be turned on. In this way, the electric heating control unit 12 and the gas heating control unit 22 can communicate with each other in an electrically insulated state.
As shown in fig. 1, the heating cooker 2 of the present embodiment is provided with base insulating structures 30, 40, 50 at positions P1, P2, P3 in the power supply system of the heating cooker 2, respectively. That is, in the heating cooker 2 of the present embodiment, the insulating mechanism configured between the power supply mechanism 4 connected to the commercial power supply and the contactable portion 24 can exhibit an insulating performance exceeding the insulating performance corresponding to the double insulation, in other words, the insulating mechanism configured between the power supply mechanism 4 and the contactable portion 24 can exhibit an insulating performance exceeding the insulating performance corresponding to the double insulation; the contactable portion 24 is exposed to the outside to allow a user to contact it.
Here, "double insulation" may mean insulation composed of both base insulation and additional insulation (see JIS standard). The insulating properties of the double insulation are higher than those of the basic insulation. The term "base insulation" means insulation (refer to JIS standard) applied to a charging unit (i.e., a portion connected to an electrical system) for basic protection against an electric shock. The term "additional insulation" means independent insulation added to the base insulation to protect against electric shock when the base insulation is broken (refer to JIS standard). The insulating base structures 30, 40, and 50 are configured to provide, for example, a power conversion unit (so-called transformer) that does not directly connect the primary-side and secondary-side wirings. In other examples, the base insulating structures 30, 40, and 50 may be structures in which the primary-side and secondary-side wirings are separated by a predetermined distance or more at any position (so-called isolated insulating structures).
In the example of fig. 1, the position P1 at which the base insulating structure 30 is provided is a position between the upstream end portion on the side of the power supply mechanism 4 and the electric heating control unit 12 that uses electric power in the power supply system in the electric heating unit 6. Therefore, the base insulating structure 30 is a step-down transformer for converting a commercial power supply (for example, AC 200V) that is a high-voltage AC power supply into a low-voltage DC power supply (for example, DC 12V) that can be used by the electric heating control unit 12, for example. Here, the term "transformer" may mean a device including a transformation unit that transforms (steps down) an ac power supply, a rectifier that rectifies the transformed ac power supply and converts the rectified ac power supply into a dc power supply, and a smoothing capacitor that smoothes the dc power supply. The same applies to various "transformers" mentioned below in this specification.
The position P2 where the base insulating structure 40 is provided is an inter-cell power supply portion that electrically connects the electric heating unit 6 and the gas heating unit 8. Therefore, the base insulating structure 40 is, for example, an insulating transformer in which step-up and step-down are not performed between the primary side and the secondary side. The insulation transformer also includes the above-described transformer section, rectifier and smoothing capacitor. However, the insulation transformer further includes a converter for converting a dc power supply into an ac power supply on its primary side. Accordingly, the insulation transformer performs conversion from the dc power supply to the ac power supply in the conversion unit, transformation (but not boosting and stepping down) of the ac power supply in the transformation unit, rectification in the rectifier and conversion to the dc power supply, and smoothing of the dc power supply by the smoothing capacitor. The same applies to the insulation transformer mentioned in the present specification below.
The position P3 at which the insulating base structure 50 is provided is a position between the upstream end portion on the gas heating unit 8 side and each of the components using electric power (i.e., the gas heating unit 20, the gas heating control unit 22, and the contactable portion 24) in the electric power supply system in the gas heating unit 8. For example, the base insulating structure 50 is an insulating transformer in which voltage increase and decrease are not performed between the primary side and the secondary side.
The structure of the heating cooker 2 of the present embodiment has been described above. As described above, in the heating cooker 2 of the present embodiment, a total of 3 insulating base structures 30, 40, and 50 are provided between the power supply mechanism 4 and the contactable portion 24. That is, in the heating cooker 2 of the present embodiment, an insulating mechanism capable of exhibiting an insulating performance exceeding an insulating performance corresponding to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24. Since the insulating mechanism is provided, according to the present embodiment, in the heating cooker 2 using the commercial power supply as the power supply source, even if the user touches the contactable portion 24 of the gas heating unit 8, electric shock can be prevented. In particular, in the present embodiment, since the insulating mechanism capable of exhibiting the insulating performance exceeding the insulating performance corresponding to the double insulation is configured between the power supply mechanism 4 and the contactable portion 24, it is possible to exhibit the higher insulating performance as compared with the case where the insulating mechanism capable of exhibiting the insulating performance corresponding to only one base insulating structure is provided between the power supply mechanism 4 and the contactable portion 24. That is, the user can be more appropriately prevented from getting an electric shock.
The heating cooker 2 of the present embodiment is a cooker using a commercial power supply as a power supply source, and may be a hybrid cooker having both the electric heating unit 6 and the gas heating unit 8. The user can perform both electric heating and gas heating using the heating cooker 2. Further, even if the user touches the contactable portion 24 of the gas heating unit 8, the possibility of electric shock can be sufficiently suppressed. The user can safely perform electric heating and gas heating using the heating cooker 2.
In the heating cooker 2 of the present embodiment, the electric heating means 6 is electrically connected to the power supply means 4, and the gas heating means 8 is electrically connected to the electric heating means 6. That is, the power supply mechanism 4, the electric heating unit 6, and the gas heating unit 8 are connected in series in this order. Therefore, even if a situation occurs in which the gas heating unit 8 cannot be operated due to a failure or the like occurring in the gas heating unit 8, the electric heating unit 6 electrically connected to the power supply mechanism 4 can be continuously operated. Therefore, it is possible to prevent a situation in which cooking using the heating cooker 2 is completely disabled while the gas heating unit 8 is disabled.
(various modifications of embodiment 1)
Various modifications of the heating cooker 2 of the present embodiment will be described. In the present embodiment, the heating cooker 2 is not limited to the above-described contents and arrangement positions, and may be any contents and arrangement positions as long as an insulating mechanism capable of exhibiting an insulating performance equal to or higher than an insulating performance corresponding to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24. Next, specific modifications will be described.
(modification 1 of embodiment 1)
Any of the base insulating structures 30, 40, 50 provided at the positions P1, P2, P3 in the power supply system of the heating cooker 2, respectively, may be omitted. For example, the base insulating structure 30 provided at the position P1 may be omitted. In this case, the insulating mechanism capable of exhibiting the insulating performance corresponding to the double insulation is constructed between the power supply mechanism 4 and the contactable portion 24 by the base insulating structure 40 at the position P2 and the base insulating structure 50 at the position P3.
(modification 2 of embodiment 1)
In addition, 1 reinforcing insulation structure 60 (see fig. 1) may be provided at position P1 instead of the base insulation structures 30, 40, 50 provided at positions P1, P2, P3 of the heating cooker 2, respectively. Here, "reinforced insulation" means a single insulation (refer to JIS standard) applied to a charging portion, which has a protection (action) equivalent to double insulation against an electric shock. For example, the reinforced insulation structure includes the following structures: a power conversion unit (so-called transformer) is provided in which the primary-side and secondary-side wiring lines are not directly connected to each other, and the primary-side and secondary-side wiring lines are separated from each other by a predetermined distance or more at any position. In the case of this modification, by providing the reinforcing insulation structure 60 at the position P1, an insulation mechanism capable of exhibiting insulation performance equivalent to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 3 of embodiment 1)
In addition, instead of providing the reinforcing insulation structure 60 at the position P1, a reinforcing insulation structure 70 may be provided at the position P2 (see fig. 1). Also, instead of providing the reinforcing insulation structure 60 at the position P1, the reinforcing insulation structure 80 may be provided at the position P3 (refer to fig. 1). In the case of this modification as well, by providing the reinforcing insulation structure 70 (or 80), an insulation mechanism capable of exhibiting insulation performance equivalent to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 4 of embodiment 1)
In addition, any 2 or more of the reinforced insulation structure 60 at the position P1, the reinforced insulation structure 70 at the position P2, and the reinforced insulation structure 80 at the position P3 may be provided. In this case, by providing 2 or more of the reinforcing insulation structures 60, 70, and 80, an insulation mechanism capable of exhibiting insulation performance exceeding the insulation performance corresponding to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 5 of embodiment 1)
Further, any one of the reinforcing insulation structure 60 at the position P1, the reinforcing insulation structure 70 at the position P2, and the reinforcing insulation structure 80 at the position P3 may be provided, and the base insulation structure may be provided at another position. For example, in the case where the reinforcing insulation structure 60 is provided at the position P1, the base insulation structure 40 may be provided at the position P2. In this case, an insulating mechanism capable of exhibiting an insulating performance exceeding the insulating performance corresponding to double insulation is also constructed between the power supply mechanism 4 and the contactable portion 24.
(embodiment 2)
A heating cooker 102 according to embodiment 2 shown in fig. 2 will be mainly described with respect to differences from embodiment 1. The heating cooker 102 of the present embodiment also includes a power supply mechanism 4, an electric heating unit 6, and a gas heating unit 8, as in embodiment 1. The electric power supply mechanism 4, the electric heating unit 6, and the gas heating unit 8 all have the same configuration as in embodiment 1. However, the present embodiment is different from embodiment 1 in that the gas heating unit 8 is electrically connected to the power supply mechanism 4, and the electric heating unit 6 is electrically connected to the gas heating unit 8. That is, in the present embodiment, the electric power supply mechanism 4, the gas heating unit 8, and the electric heating unit 6 are connected in series in this order. In fig. 2, elements having the same configurations as those of heating cooker 2 (see fig. 1) of embodiment 1 are denoted by the same reference numerals as in fig. 1. In this embodiment, detailed description of elements having the same configuration as that of the heating cooker 2 (see fig. 1) of embodiment 1 will be omitted.
As shown in fig. 2, in the heating cooker 102 of the present embodiment, the insulating base structures 130, 140, and 150 are also provided at positions P11, P12, and P13, respectively, where the positions P11, P12, and P13 are between the power supply mechanism 4 connected to the commercial power supply and the contactable portion 24 of the gas heating unit 8 exposed to the outside and contactable by the user. That is, in the heating cooker 102 of the present embodiment, an insulating mechanism capable of exhibiting an insulating performance exceeding an insulating performance corresponding to double insulation is also constructed between the power supply mechanism 4 and the contactable portion 24, wherein the power supply mechanism 4 is connected to a commercial power supply, and the contactable portion 24 is exposed to the outside and is contactable by a user.
In the example of fig. 2, the position P11 at which the base insulating structure 130 is provided is a power supply portion that electrically connects the power supply mechanism 4 and the gas heating unit 8. Therefore, for example, the insulating base structure 130 is a step-down transformer for converting a commercial power supply (for example, AC 200V) which is a high-voltage AC power supply into a DC power supply (for example, DC 12V) having a relatively low voltage which can be used by the gas heating unit 20, the gas heating control unit 22, and the contact portion 24.
The position P12 at which the base insulating structure 140 is provided is a position between the upstream end portion on the side of the power supply mechanism 4 and each of the components using the electric power (i.e., the gas heating unit 20, the gas heating control unit 22, and the contactable portion 24) in the power supply system in the gas heating unit 8. For example, the base insulation structure 140 may be the step-down transformer described above, or may be an insulation transformer in which step-up and step-down are not performed between the primary side and the secondary side.
The position P13 where the base insulating structure 150 is provided is a position between the position P12 and the contactable portion 24 in the electric power supply system in the gas heating unit 8. For example, the base insulating structure 150 may also be the insulating transformer described above.
In the example of fig. 2, an insulating structure 300 is provided at a position P50, where the position P50 is a position between the upstream end portion on the gas heating unit 8 side and the electric heating portion 10 in the electric power supply system in the electric heating unit 6. The insulation structure 300 of the present embodiment is a step-up transformer for stepping up a low-voltage direct-current power supply (for example, DC 12V) supplied from the gas heating unit 8 to a high-voltage alternating-current power supply (for example, AC 200V) usable by the electric heating portion 10. The step-up transformer used as the insulating structure 300 has a converter for converting a dc power supply into an ac power supply and a transformer for transforming (boosting) the ac power supply on its primary side, but does not have a rectifier and a smoothing capacitor. Therefore, a high-voltage AC power supply (e.g., AC 200V) is supplied from the insulating structure (step-up transformer) 300 to the electric heating portion 10. As described above, the electric heating unit 10 incorporates a converter for converting a high-voltage AC power supply (in this case, a commercial power supply (for example, AC 200V)) into a dc power supply usable by the electric heating unit 10. The electric heating unit 10 heats the object using the dc power converted by the built-in converter.
The structure of the heating cooker 102 of the present embodiment is explained above. As described above, in the heating cooker 102 of the present embodiment, 3 base insulating structures 130, 140, and 150 in total are also provided between the power supply mechanism 4 and the contactable portion 24. That is, in the heating cooker 102 of the present embodiment, an insulating mechanism capable of exhibiting an insulating performance exceeding an insulating performance corresponding to double insulation is also constructed between the power supply mechanism 4 and the contactable portion 24. Therefore, in the present embodiment, even if the user touches the contactable portion 24 of the gas heating unit 8, electric shock can be prevented.
In the heating cooker 102 of the present embodiment, the power supply mechanism 4, the gas heating unit 8, and the electric heating unit 6 are connected in series in this order. Therefore, even if a situation occurs in which the electric heating unit 6 cannot be operated due to a failure or the like occurring in the electric heating unit 6, the gas heating unit 8 electrically connected to the power supply mechanism 4 can be continuously operated. Therefore, it is possible to prevent a situation in which cooking using the heating cooker 102 is completely disabled while the electric heating unit 6 is disabled.
(various modifications of embodiment 2)
Various modifications of the heating cooker 102 of the present embodiment will be described. In the present embodiment, the heating cooker 102 is not limited to the above-described contents and arrangement positions, and may be any contents and arrangement positions, as long as an insulating mechanism capable of exhibiting an insulating performance equal to or higher than an insulating performance corresponding to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24. Next, specific modifications will be described.
(modification 1 of embodiment 2)
Any of the base insulating structures 130, 140, and 150 provided at the positions P11, P12, and P13 in the power supply system of the heating cooker 102 may be omitted. For example, the base insulating structure 130 provided at the position P11 may be omitted. In this case, the insulating mechanism capable of exhibiting the insulating performance corresponding to the double insulation is constructed between the power supply mechanism 4 and the contactable portion 24 by the base insulating structure 140 at the position P12 and the base insulating structure 150 at the position P13.
(modification 2 of embodiment 2)
Further, a reinforcing insulation structure 160 may be provided at position P11 (see fig. 2) instead of base insulation structures 130, 140, and 150 provided at positions P11, P12, and P13 of heating cooker 102, respectively. By providing the reinforced insulation structure 160 at the position P11, an insulation mechanism capable of exhibiting insulation performance equivalent to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 3 of embodiment 2)
In addition, instead of providing the reinforcing insulation structure 160 at the position P11, a reinforcing insulation structure 170 may be provided at the position P12 (refer to fig. 2). Also, instead of providing the reinforcing insulation structure 160 at the position P11, a reinforcing insulation structure 180 may be provided at the position P13 (refer to fig. 2). In the case of this modification as well, by providing the reinforcing insulation structure 170 (or 180), an insulation mechanism capable of exhibiting insulation performance equivalent to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 4 of embodiment 2)
In addition, any 2 or more of the reinforced insulation structure 160 at the position P11, the reinforced insulation structure 170 at the position P12, and the reinforced insulation structure 180 at the position P13 may be provided. In this case, by providing 2 or more of the reinforcing insulation structures 160, 170, and 180, an insulation mechanism capable of exhibiting insulation performance exceeding the insulation performance corresponding to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 5 of embodiment 2)
Further, any one of the reinforcing insulation structure 160 at the position P11, the reinforcing insulation structure 170 at the position P12, and the reinforcing insulation structure 180 at the position P13 may be provided, and the base insulation structure may be provided at the other positions among the positions P11 to P13. For example, in the case where the reinforcing insulation structure 160 is provided at the position P11, the base insulation structure 140 may be provided at the position P12. In this case, an insulating mechanism capable of exhibiting an insulating performance exceeding the insulating performance corresponding to double insulation is also constructed between the power supply mechanism 4 and the contactable portion 24.
(embodiment 3)
A heating cooker 202 according to embodiment 3 shown in fig. 3 will be mainly described with respect to differences from embodiment 1. The heating cooker 202 of the present embodiment also includes a power supply mechanism 4, an electric heating unit 6, and a gas heating unit 8, as in embodiment 1. The electric power supply mechanism 4, the electric heating unit 6, and the gas heating unit 8 each have the same configuration as in embodiment 1. However, the present embodiment is different from embodiment 1 in that the electric heating unit 6 and the gas heating unit 8 are electrically connected to the power supply mechanism 4, respectively. That is, in the present embodiment, the electric heating unit 6 and the gas heating unit 8 are connected in parallel to each other to the power supply mechanism 4. In fig. 3, elements having the same configurations as those of heating cooker 2 (see fig. 1) of embodiment 1 are also denoted by the same reference numerals as in fig. 1. In this embodiment, detailed description of elements having the same configuration as that of the heating cooker 2 (see fig. 1) of embodiment 1 will be omitted.
As shown in fig. 3, in the heating cooker 202 of the present embodiment, the base insulating structures 230, 240, and 250 are provided at positions P21, P22, and P23, respectively, between the power supply mechanism 4 connected to the commercial power supply and the contactable portion 24 of the gas heating unit 8 exposed to the outside and contactable by the user. That is, in the heating cooker 202 of the present embodiment, an insulating mechanism capable of exhibiting an insulating performance exceeding an insulating performance corresponding to double insulation is also constructed between the power supply mechanism 4 and the contactable portion 24, wherein the power supply mechanism 4 is connected to a commercial power supply; the contactable portion 24 is exposed to the outside to allow a user to contact it.
In the example of fig. 3, a position P21 at which the base insulating structure 230 is provided is a power supply portion that electrically connects the power supply mechanism 4 and the gas heating unit 8. Thus, for example, the base insulating structure 230 is a step-down transformer.
The position P22 at which the base insulating structure 240 is provided is a position between the upstream end portion on the side of the power supply mechanism 4 and each of the components using the electric power (i.e., the gas heating unit 20, the gas heating control unit 22, and the contactable portion 24) in the power supply system in the gas heating unit 8. For example, the base insulating structure 240 may be a step-down transformer or an insulation transformer.
The position P23 where the base insulating structure 250 is provided is a position between the position P22 and the contactable portion 24 in the electric power supply system in the gas heating unit 8. For example, the base insulation structure 250 may also be an insulation transformer.
In the example of fig. 3, the insulating structure 400 is also provided at a position P60, where the position P60 is a position between the electric heating control unit 12 and the upstream end portion on the electric power supply mechanism 4 side in the electric power supply system in the electric heating unit 6. The insulating structure 400 of the present embodiment is an insulating structure for the electric heating unit 6, and may be any of a base insulating structure and a reinforcing insulating structure. In addition, as shown in fig. 3, in the present embodiment, the electric heating unit 10 is directly connected to the power supply mechanism 4.
The structure of the heating cooker 202 of the present embodiment has been described above. As described above, in the heating cooker 202 of the present embodiment, 3 base insulating structures 230, 240, and 250 in total are provided between the power supply mechanism 4 and the contactable portion 24. That is, in the heating cooker 202 of the present embodiment, an insulating mechanism capable of exhibiting an insulating performance exceeding an insulating performance corresponding to double insulation is also constructed between the power supply mechanism 4 and the contactable portion 24. Therefore, in the present embodiment, even if the user touches the contactable portion 24 of the gas heating unit 8, electric shock can be prevented.
In the heating cooker 202 of the present embodiment, the electric heating unit 6 and the gas heating unit 8 are electrically connected to the power supply mechanism 4, respectively. That is, the electric heating unit 6 and the gas heating unit 8 are connected in parallel to each other to the power supply mechanism 4. Therefore, even if a failure or the like occurs in one of the electric heating unit 6 and the gas heating unit 8 and the other heating unit cannot operate, the other heating unit electrically connected to the electric power supply mechanism 4 can be continuously operated. Therefore, it is possible to prevent a situation in which cooking using the heating cooker 202 is completely disabled while one of the heating units is disabled.
(various modifications of embodiment 3)
Various modifications of the cooking device 202 of the present embodiment will be described. In the present embodiment, the heating cooker 202 is not limited to the above-described contents and arrangement positions, and may be any contents and arrangement positions as long as an insulating mechanism capable of exhibiting an insulating performance equal to or higher than an insulating performance corresponding to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24. Next, specific modifications will be described.
(modification 1 of embodiment 3)
Any of the base insulating structures 230, 240, and 250 provided at positions P21, P22, and P23 in the power supply system of the heating cooker 202 may be omitted. For example, the base insulating structure 230 provided at the position P21 may be omitted. In this case, the insulating mechanism capable of exhibiting the insulating performance corresponding to the double insulation is constructed between the power supply mechanism 4 and the contactable portion 24 by the base insulating structure 240 at the position P22 and the base insulating structure 250 at the position P23.
(modification 2 of embodiment 3)
Further, a reinforcing insulating structure 260 may be provided at position P21 instead of base insulating structures 230, 240, and 250 provided at positions P21, P22, and P23 of heating cooker 202 (see fig. 3). By providing the reinforcing insulation structure 260 at the position P21, an insulation mechanism capable of exhibiting insulation performance equivalent to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 3 of embodiment 3)
In addition, instead of providing the reinforcing insulation structure 260 at the position P21, a reinforcing insulation structure 270 may be provided at the position P22 (see fig. 3). Also, instead of providing the reinforcing insulation structure 260 at the position P21, a reinforcing insulation structure 280 may be provided at the position P23 (refer to fig. 3). In the case of this modification as well, by providing the reinforcing insulation structure 270 (or 280), an insulation mechanism capable of exhibiting insulation performance equivalent to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 4 of embodiment 3)
In addition, any 2 or more of the reinforcing insulation structure 260 at the position P21, the reinforcing insulation structure 270 at the position P22, and the reinforcing insulation structure 280 at the position P23 may be provided. In this case, by providing 2 or more of the reinforcing insulation structures 260, 270, and 280, an insulation mechanism capable of exhibiting insulation performance exceeding the insulation performance corresponding to double insulation is constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 5 of embodiment 3)
Further, any one of the reinforcing insulation structure 260 at the position P21, the reinforcing insulation structure 270 at the position P22, and the reinforcing insulation structure 280 at the position P23 may be provided, and the foundation insulation structure may be provided at another position among the positions P21 to P23. For example, in the case where the reinforcing insulation structure 260 is provided at the position P21, the base insulation structure 240 may be provided at the position P22. In this case, an insulating mechanism capable of exhibiting an insulating performance exceeding the insulating performance corresponding to double insulation is also constructed between the power supply mechanism 4 and the contactable portion 24.
The embodiments have been described in detail, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes to the specific examples described above.
(modification 1) in each of the above-described embodiments, an insulating structure is provided at any one of positions P1 to P3, P11 to P13, and P21 to P23 between the power supply mechanism 4 and the contactable portion 24, and an insulating mechanism exhibiting insulating performance equal to or higher than that of double insulation is constructed between the power supply mechanism 4 and the contactable portion 24 as a whole. However, the present invention is not limited to this, and any insulating structure may be provided at any position between the power supply mechanism 4 and the contactable portion 24 regardless of the positions P1 to P3, P11 to P13, and P21 to P23, as long as an insulating mechanism that exhibits insulating performance equal to or higher than double insulation is provided between the power supply mechanism 4 and the contactable portion 24.
(modification 2) in each of the above embodiments, each of the heating cookers 2, 102, 202 has the power supply mechanism 4, the electric heating unit 6, and the gas heating unit 8. However, the present invention is not limited to this, and the electric heating unit may be omitted from the heating cooker. In this case, the heating cooker may be configured such that the power supply mechanism 4 and the gas heating unit 8 are electrically connected. In this case, an insulating mechanism that exhibits an insulating performance equal to or greater than the insulating performance corresponding to double insulation may be configured between the power supply mechanism 4 and the contactable portion 24.
(modification 3) in each of the above embodiments, the exposed contactable portion 24 includes the ignition portion 26 and the flame detection portion 28. However, the present invention is not limited to this, and the exposed contactable portion 24 may have only one of the ignition portion 26 and the flame detection portion 28.
(modification 4) in each of the above-described embodiments, an insulation structure combining the base insulation structure and the additional insulation structure may be provided instead of the reinforcing insulation structures 60, 70, 80, 160, 170, 180, 260, 270, 280. In this case, an insulating mechanism that exhibits an insulating performance equal to or greater than the insulating performance corresponding to double insulation is also constructed between the power supply mechanism 4 and the contactable portion 24.
(modification 5) in each of the above-described embodiments, instead of constructing an insulating mechanism that can exhibit insulating performance equal to or greater than that of double insulation between the power supply mechanism 4 and the contactable portion 24, an insulating mechanism that can exhibit insulating performance equal to one-double insulation (i.e., only one base insulating structure) may be constructed between the power supply mechanism 4 and the contactable portion 24. In general, the insulating mechanism may be a mechanism capable of exhibiting insulating performance between the power supply mechanism and the contactable portion.
The technical elements described in the present specification or drawings are used alone or in various combinations to achieve technical utility, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in the present specification or the drawings can achieve a plurality of objects at the same time, and achieving one of the objects has technical utility itself.
Claims (6)
1. A heating cooker is characterized in that,
comprising: a power supply mechanism connected to a commercial power supply; a gas heating unit that operates using the electric power supplied from the electric power supply mechanism; and an insulating mechanism, wherein the insulating mechanism is provided with a plurality of insulating layers,
the gas heating unit has:
a gas heating unit that burns gas to heat the gas;
a gas heating control unit that controls heating by the gas heating unit;
a contactable portion exposed in a user-contactable state in the vicinity of the gas heating portion, and including at least one of an ignition portion for igniting the gas and a flame detection portion for detecting a combustion flame of the gas,
the insulating mechanism is a mechanism capable of exhibiting an insulating performance equal to or greater than an insulating performance corresponding to double insulation between the power supply mechanism and the contactable portion.
2. The heating cooker according to claim 1,
the insulation means comprises at least 2 separate insulation structures corresponding to a double insulation.
3. The heating cooker according to claim 1,
the insulation mechanism comprises at least 1 reinforcing insulation structure.
4. The heating cooker according to any one of claims 1 to 3,
and an electric heating unit that operates using the electric power supplied from the electric power supply mechanism,
the electric heating unit has:
an electric heating unit that converts electricity into heat to heat; and
and an electric heating control unit that controls heating by the electric heating unit.
5. The heating cooker according to claim 4,
the 1 st unit of the gas heating unit and the electric heating unit is electrically connected with the electric power supply mechanism,
a 2 nd unit different from the 1 st unit among the gas heating unit and the electric heating unit is electrically connected to the 1 st unit.
6. The heating cooker according to claim 4,
the gas heating unit and the electric heating unit are respectively electrically connected with the electric power supply mechanism.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-075700 | 2018-04-10 | ||
| JP2018075700A JP7068903B2 (en) | 2018-04-10 | 2018-04-10 | Cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110360598A CN110360598A (en) | 2019-10-22 |
| CN110360598B true CN110360598B (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910271036.6A Active CN110360598B (en) | 2018-04-10 | 2019-04-04 | Heating cooker |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7068903B2 (en) |
| KR (1) | KR102635256B1 (en) |
| CN (1) | CN110360598B (en) |
| TW (1) | TWI784153B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202259012U (en) * | 2011-09-15 | 2012-05-30 | 江苏常恒集团自动控制器有限公司 | Dual-insulating liquid expansion type temperature controller |
| CN202496158U (en) * | 2011-12-31 | 2012-10-17 | 海尔集团公司 | Household appliance metal casing leakage-proof device |
| CN104487772A (en) * | 2012-05-25 | 2015-04-01 | 埃尔特克有限公司 | Control device for gas taps |
| CN206257704U (en) * | 2016-10-31 | 2017-06-16 | 华帝股份有限公司 | Bending-resistant split ignition needle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS54121434A (en) * | 1978-03-13 | 1979-09-20 | Sanyo Electric Co Ltd | Hybrid gas oven |
| JP3140998B2 (en) | 1998-04-28 | 2001-03-05 | 株式会社ハーマン | Gas cookware |
| JP3575545B2 (en) * | 2001-09-26 | 2004-10-13 | 横河電機株式会社 | Insulated power supply |
| JP3861759B2 (en) * | 2002-07-11 | 2006-12-20 | 松下電器産業株式会社 | Induction heating cooker |
| US20070204858A1 (en) * | 2006-02-22 | 2007-09-06 | The Brinkmann Corporation | Gas cooking appliance and control system |
| JP4575332B2 (en) * | 2006-06-28 | 2010-11-04 | リンナイ株式会社 | Gas stove |
| CN202613513U (en) * | 2012-05-30 | 2012-12-19 | 天津大学 | Novel efficient gas cooking appliance integrating heat pipe, heat insulation bushing with temperature difference generating sheets |
-
2018
- 2018-04-10 JP JP2018075700A patent/JP7068903B2/en active Active
-
2019
- 2019-04-01 KR KR1020190037818A patent/KR102635256B1/en active IP Right Grant
- 2019-04-03 TW TW108111846A patent/TWI784153B/en active
- 2019-04-04 CN CN201910271036.6A patent/CN110360598B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202259012U (en) * | 2011-09-15 | 2012-05-30 | 江苏常恒集团自动控制器有限公司 | Dual-insulating liquid expansion type temperature controller |
| CN202496158U (en) * | 2011-12-31 | 2012-10-17 | 海尔集团公司 | Household appliance metal casing leakage-proof device |
| CN104487772A (en) * | 2012-05-25 | 2015-04-01 | 埃尔特克有限公司 | Control device for gas taps |
| CN206257704U (en) * | 2016-10-31 | 2017-06-16 | 华帝股份有限公司 | Bending-resistant split ignition needle |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI784153B (en) | 2022-11-21 |
| KR102635256B1 (en) | 2024-02-08 |
| CN110360598A (en) | 2019-10-22 |
| JP7068903B2 (en) | 2022-05-17 |
| TW201945667A (en) | 2019-12-01 |
| JP2019186045A (en) | 2019-10-24 |
| KR20190118512A (en) | 2019-10-18 |
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