CN204227484U - Microwave oven with hot air convection function - Google Patents
Microwave oven with hot air convection function Download PDFInfo
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- CN204227484U CN204227484U CN201420440331.2U CN201420440331U CN204227484U CN 204227484 U CN204227484 U CN 204227484U CN 201420440331 U CN201420440331 U CN 201420440331U CN 204227484 U CN204227484 U CN 204227484U
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- cavity
- hot air
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- wave oven
- air convection
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- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000012360 testing method Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 7
- 239000000523 sample Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000013021 overheating Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides a microwave oven with hot-blast convection current function. The microwave oven comprises a cavity, a door body, a first heating pipe, a cooling fan, a second heating pipe, a hot air convection fan, a furnace chamber temperature detection circuit and a peripheral electric device control circuit, wherein the first heating pipe, the cooling fan, the second heating pipe and the hot air convection fan are arranged on a top plate of the cavity, and the second heating pipe and the hot air convection fan are arranged on a rear panel of the cavity. And the side panel of the cavity is respectively provided with a furnace lamp and a vent hole. According to the technical scheme provided by the utility model, the utility model discloses can reach the required settlement temperature in the accurate furnace chamber of keeping for a long time, can avoid furnace chamber top temperature overheated again.
Description
Technical field
The utility model relates to micro-wave oven technical field, specifically a kind of micro-wave oven with hot air convection function.
Background technology
At present, hot air convection microwave oven market used mainly controls the work of heating tube and fan with electromagnetic relay.One termination control signal of electromagnetic relay, a termination heating tube, fan electromotor.When heating tube and fan need work, host computer, to control end control signal, realizes electromagnetic relay conducting, heating tube, fan work.In the fan electromotor course of work, heating tube is blown, cause air circulation flow in furnace chamber, reach hot air convection effect.But, the existing micro-wave oven with hot air convection function, have the following disadvantages: one is due to the temperature near heating tube place in furnace chamber can be caused when high-power heating pipe works relatively high, and fan turns blowing needs certain process that furnace chamber temperature just can be made even, design temperature precisely cannot be kept for a long time; Two is if the long-time cavity temperature that controls is in higher range, also cannot solve furnace chamber top temperature overheating phenomenon.
Utility model content
The purpose of this utility model is to provide a kind of micro-wave oven with hot air convection function, can solve the deficiency of existing micro-wave oven, avoids furnace chamber top temperature overheating.
The technical solution of the utility model is: a kind of micro-wave oven with hot air convection function, comprises cavity, Men Ti, the first heating tube be located on cavity top board, radiator fan, is located at the second heating tube on cavity rear board and hot air convection fan, cavity temperature testing circuit and periphery electrical devices control circuit.Described cavity side panel is respectively equipped with stove lamp and air vent.
Further, described cavity temperature testing circuit comprises metal probe, electric capacity C1, transistor Q1, resistance R1, resistance R2 and resistance R3.Described metal probe one end ground connection, another termination micro-wave oven main control chip first input end.Described electric capacity C1 one end ground connection, another termination power supply signal.Described resistance R1 mono-termination micro-wave oven main control chip first input end, another termination power supply signal.The colelctor electrode of described transistor Q1 connects micro-wave oven main control chip first input end through resistance R2, and emitter stage connects power supply voltage signal, and base stage connects micro-wave oven main control chip second input through resistance R3.
Further, described periphery electrical devices control circuit comprises the first heating tube relay, the second heating tube and hot air convection fan relay and radiator fan relay.
Further, described air vent comprises the first air vent and the second air vent, and the first described air vent is positioned at the side of stove lamp, and the second described air vent is positioned at the junction of cavity side panel and door body movable end.
From above technical scheme, first, the utility model, by starting the first air vent at cavity side panel near the position of stove lamp, makes cold wind can enter in furnace chamber by the first air vent, form the circulation of furnace chamber inner top air, thus avoid furnace chamber top temperature overheating.Secondly, the utility model by offering the second air vent at furnace chamber near the side of door switch, the blast of hot air convection fan when can utilize work, hot air convection effect in increasing furnace chamber.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model has the micro-wave oven of hot air convection function;
Fig. 2 is the circuit diagram of cavity temperature testing circuit in the utility model.
Wherein:
1, cavity, the 2, second air vent, 3, rear board, 4, top board, the 5, first air vent, 6, loophole.
Detailed description of the invention
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
As Figure 1-Figure 2, there is a micro-wave oven for hot air convection function, comprise cavity, Men Ti, the first heating tube be located on cavity top board, radiator fan, be located at the second heating tube on cavity rear board and hot air convection fan, cavity temperature testing circuit and periphery electrical devices control circuit.Described cavity side panel is respectively equipped with stove lamp and air vent.Radiator fan forms wind path between top board and furnace chamber, is dispelled the heat to top board to the heat transfer of top board by air in minimizing furnace chamber top simultaneously.
Further, as shown in Figure 2, described cavity temperature testing circuit comprises metal probe, electric capacity C1, transistor Q1, resistance R1, resistance R2 and resistance R3.Described metal probe one end ground connection, another termination micro-wave oven main control chip first input end.Described electric capacity C1 one end ground connection, another termination power supply signal.Described resistance R1 mono-termination micro-wave oven main control chip first input end, another termination power supply signal.The colelctor electrode of described transistor Q1 connects micro-wave oven main control chip first input end through resistance R2, and emitter stage connects power supply voltage signal, and base stage connects micro-wave oven main control chip second input through resistance R3.Under different micro-wave oven furnace chamber environment temperatures, the resistance of metal probe is different, so that the magnitude of voltage that whole testing circuit exports is different.Micro-wave oven main control chip is converted into digital voltage value after collecting the analog voltage of testing circuit output.Each different digital voltage value, and different furnace chamber ambient temperature level values matches.
Further, described periphery electrical devices control circuit comprises the first heating tube relay, the second heating tube and hot air convection fan relay and radiator fan relay.Three described relays are all outputs of a termination main control chip, each periphery electrical devices of another termination.Relay is all that zero crossing is connected, and zero crossing turns off type.
Further, described air vent comprises the first air vent and the second air vent, and the first described air vent is positioned at the side of stove lamp, and the second described air vent is positioned at the junction of cavity side panel and door body movable end.Loophole below first air vent, needs to shelter from light-passing board, prevents cold wind from entering.
The above embodiment is only be described preferred embodiment of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that claims of the present utility model determine.
Claims (3)
1. there is a micro-wave oven for hot air convection function, it is characterized in that: comprise cavity (1), Men Ti, the first heating tube be located on cavity top board (4), radiator fan, be located at the second heating tube on cavity rear board (3) and hot air convection fan, cavity temperature testing circuit and periphery electrical devices control circuit;
Described cavity side panel is respectively equipped with stove lamp and air vent;
Described air vent comprises the first air vent (5) and the second air vent (2), and described the first air vent (5) is positioned at the side of stove lamp, and described the second air vent (2) is positioned at the junction of cavity side panel and door body movable end.
2. a kind of micro-wave oven with hot air convection function according to claim 1, is characterized in that: described cavity temperature testing circuit comprises metal probe, electric capacity C1, transistor Q1, resistance R1, resistance R2 and resistance R3; Described metal probe one end ground connection, another termination micro-wave oven main control chip first input end; Described electric capacity C1 one end ground connection, another termination power supply signal; Described resistance R1 mono-termination micro-wave oven main control chip first input end, another termination power supply signal; The colelctor electrode of described transistor Q1 connects micro-wave oven main control chip first input end through resistance R2, and emitter stage connects power supply voltage signal, and base stage connects micro-wave oven main control chip second input through resistance R3.
3. a kind of micro-wave oven with hot air convection function according to claim 1, is characterized in that: described periphery electrical devices control circuit comprises the first heating tube relay, the second heating tube and hot air convection fan relay and radiator fan relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420440331.2U CN204227484U (en) | 2014-08-05 | 2014-08-05 | Microwave oven with hot air convection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420440331.2U CN204227484U (en) | 2014-08-05 | 2014-08-05 | Microwave oven with hot air convection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204227484U true CN204227484U (en) | 2015-03-25 |
Family
ID=52925572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420440331.2U Active CN204227484U (en) | 2014-08-05 | 2014-08-05 | Microwave oven with hot air convection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204227484U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165390A (en) * | 2014-08-05 | 2014-11-26 | 合肥荣事达三洋电器股份有限公司 | Microwave oven with hot air convection function and control method thereof |
-
2014
- 2014-08-05 CN CN201420440331.2U patent/CN204227484U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165390A (en) * | 2014-08-05 | 2014-11-26 | 合肥荣事达三洋电器股份有限公司 | Microwave oven with hot air convection function and control method thereof |
| CN104165390B (en) * | 2014-08-05 | 2016-06-22 | 惠而浦（中国）股份有限公司 | Microwave oven with hot air convection function and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WHIRLPOOL (CHINA) CO., LTD. Free format text: FORMER NAME: HEFEI RONGSHIDA SANYO ELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 230000 science and technology zone, Hefei, Anhui, No. 96 Patentee after: Whirlpool (China) Limited by Share Ltd Address before: 230000 science and technology zone, Hefei, Anhui, No. 96 Patentee before: Hefei Rongshida Sanyo Electric Co., Ltd. |