CN114129068B - Oven with a baking oven - Google Patents
Oven with a baking oven Download PDFInfo
- Publication number
- CN114129068B CN114129068B CN202111659473.9A CN202111659473A CN114129068B CN 114129068 B CN114129068 B CN 114129068B CN 202111659473 A CN202111659473 A CN 202111659473A CN 114129068 B CN114129068 B CN 114129068B
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- temperature
- oven
- temperature controller
- preset
- heating module
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0629—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity with electric heating elements
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/0623—Small-size cooking ovens, i.e. defining an at least partially closed cooking cavity
- A47J37/0664—Accessories
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Electric Stoves And Ranges (AREA)
Abstract
The invention discloses an oven, which comprises a fire wire end, a change-over switch, a heating module, a temperature control module and a zero wire end which are sequentially connected in series, wherein the temperature control module comprises a first temperature controller and a second temperature controller which are mutually connected in series, and the temperature of an oven cavity is measured through the first temperature controller and is compared with a preset temperature to control the heating module to work or stop working, so that the heating module is stabilized near a target set temperature; the temperature sensor has the advantages that the temperature sensor is used for measuring the ambient temperature of the panel through the second temperature controller, and the temperature sensor is alternatively closed and opened according to the preset time proportion under the condition that the third preset temperature is reached, so that the temperature sensing delay defect caused by the fact that the distance between the temperature probe and the center of the oven cavity is kept up, the temperature of the oven cavity is far greater than the target set temperature when the heating module stops working is avoided, and the temperature control precision can be effectively improved.
Description
Technical Field
The invention relates to the field of cooking equipment, in particular to an oven.
Background
Household ovens may be used to bake a variety of food products, typically with the highest temperature of the oven being controlled between 230 ℃ and 260 ℃. The temperature control accuracy of the oven is an important indicator of the oven performance, affecting the effect of the food baking. At present, two types of temperature control of ovens exist, one is a mechanical temperature control oven using a temperature controller to control the temperature, and the other is an electronic temperature control oven adopting a chip matched with a thermistor to control the temperature. For mechanical temperature control oven, generally place the temperature probe of temperature controller inside the oven cavity, the temperature of oven cavity is responded to, and then the on-off of control heating element, but because temperature probe has the distance with the cavity core of oven, the temperature that the probe sensed has the deviation, can't realize accurate accuse temperature.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art and provide an oven which can improve the temperature control precision.
In a first aspect, an embodiment of the present invention provides an oven, including a power access module, a change-over switch, a heating module, and a temperature control module; the power supply access module comprises a live wire end and a zero wire end; the change-over switch is connected with the live wire end; the heating module is connected with the change-over switch; the temperature control module is connected in series between the heating module and the zero line end and comprises a first temperature controller and a second temperature controller which are mutually connected in series;
wherein:
the first temperature controller is used for measuring the temperature of the oven cavity, and is opened when the temperature of the oven cavity is higher than a first preset temperature, and is closed when the temperature of the oven cavity is lower than a second preset temperature; the first preset temperature is greater than the second preset temperature;
the second temperature controller is used for measuring the panel environment temperature and alternately switching on and switching off according to a preset time proportion under the condition that the panel environment temperature is larger than a third preset temperature.
The oven provided by the embodiment of the invention has at least the following beneficial effects: the oven comprises a fire wire end, a change-over switch, a heating module, a temperature control module and a zero wire end which are sequentially connected in series, wherein the temperature control module comprises a first temperature controller and a second temperature controller which are mutually connected in series, and the temperature of the oven cavity is measured through the first temperature controller and is compared with a preset temperature to control the heating module to work or stop working so that the temperature of the oven cavity is stabilized near a target set temperature; the temperature sensor has the advantages that the temperature sensor is used for measuring the ambient temperature of the panel through the second temperature controller, and the temperature sensor is alternatively closed and opened according to the preset time proportion under the condition that the third preset temperature is reached, so that the temperature sensing delay defect caused by the fact that the distance between the temperature probe and the center of the oven cavity is kept up, the temperature of the oven cavity is far greater than the target set temperature when the heating module stops working is avoided, and the temperature control precision can be effectively improved.
In the above oven, the alternately closing and opening according to a preset time ratio includes:
opening after closing the first preset time period;
and closing after opening the second preset time period.
Under the condition that the panel environment temperature is greater than the third preset temperature, the working time length and the stop working time length of the heating module are effectively controlled by using the panel environment temperature through setting the closing duration of the second temperature controller as the first preset time length and setting the opening duration of the second temperature controller as the second preset time length, namely setting the time proportion of the second temperature controller for alternately closing and opening, and controlling the operation of the heating module by using the oven cavity temperature in cooperation with the first temperature controller, so that the accuracy of oven temperature control is improved.
In the above oven, the first temperature controller is a liquid expansion temperature controller or a temperature limiter.
In the above oven, the second temperature controller is an adjustable temperature controller.
In the above oven, the heating module includes at least two heating elements connected in parallel with each other.
In the above oven, the change-over switch includes at least two switches, the live wire end is connected to first ends of all the switches, and the second ends of the switches are connected to the heating element.
In the oven, a first kick temperature controller is further arranged between the fire wire end and the change-over switch.
In the oven, a heat radiation fan is arranged between the live wire end and the zero wire end.
In the oven, a second kick temperature controller is arranged between the fire wire end and the heat radiation fan.
In the oven, a furnace lamp is arranged between the change-over switch and the zero line end.
In a second aspect, an embodiment of the present invention provides an oven, including a power access module, a change-over switch, a heating module, and a temperature control module; the power supply access module comprises a live wire end and a zero wire end; the change-over switch is connected with the live wire end; the heating module is connected with the change-over switch; the temperature control module is connected in series between the heating module and the zero line end, and comprises a liquid expansion type temperature controller for measuring the temperature of the oven cavity and an adjustable temperature controller for measuring the ambient temperature of the panel, which are connected in series.
The oven provided by the embodiment of the invention has at least the following beneficial effects: the oven comprises a fire wire end, a change-over switch, a heating module, a temperature control module and a zero wire end which are sequentially connected in series, wherein the temperature control module comprises a liquid expansion type temperature controller and an adjustable temperature controller which are mutually connected in series, and the temperature of the oven cavity is measured through the liquid expansion type temperature controller to control the heating module to work or stop working, so that the temperature of the oven cavity is stabilized near a target set temperature; the temperature of the oven cavity body is far more than the target set temperature when the heating module stops working, so that the temperature control precision can be effectively improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and do not limit the invention.
The invention is further described below with reference to the drawings and examples;
fig. 1 is a schematic circuit diagram of an oven according to an embodiment of the present invention;
fig. 2 is a schematic control diagram of alternate on/off of a second thermostat of an oven according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the description of the present invention, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
The mechanical oven of the related art controls the temperature of the oven through a liquid expansion type temperature controller, and a temperature probe of the liquid expansion type temperature controller is placed in the oven cavity to sense the temperature of the oven cavity. When the temperature sensed by the probe reaches a target value, the power supply of the heating unit is turned off, and when the sensed temperature is lower than the target value, the power supply of the heating unit is turned on. The temperature control purpose of the oven is realized through the on-off electricity of the heating unit. Another temperature control method of the mechanical oven is to control the temperature of the oven through an adjustable temperature controller, the adjustable temperature controller is arranged on an oven control panel, parameters of the adjustable temperature controller are designed by measuring temperature change data of the temperature change of the oven core and the temperature change data of the position of the adjustable temperature controller, and the temperature control effect is realized by controlling the on-off of a heating unit through the adjustable temperature controller.
Through the mode of liquid expanding temperature controller accuse temperature, because the probe of liquid expanding temperature controller has the distance with the cavity core of oven, the temperature that the probe sensed has the deviation, therefore the inside temperature deviation of liquid expanding temperature controller accuse Wen Shiqiang is great, can't realize accurate accuse temperature. Through the mode of adjustable temperature controller accuse temperature, because the environmental change that adjustable temperature controller was located is great, the temperature change of temperature controller can all be influenced to room temperature, oven surrounding environment, therefore, adjustable temperature controller accuse temperature effect is relatively poor.
The embodiment of the invention provides an oven, which can improve the temperature control precision.
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of a first aspect of the present invention provides an oven including a power access module 100, a change-over switch 200, a heating module 300, and a temperature control module 400; the power access module 100 includes a live line end L and a neutral line end N; the change-over switch 200 is connected with the live wire end L; the heating module 300 is connected with the change-over switch 200; the temperature control module 400 is connected in series between the heating module 300 and the zero line end N, and the temperature control module 400 includes a first temperature controller 410 and a second temperature controller 420 connected in series with each other;
wherein:
the first temperature controller 410 is configured to measure a temperature of the oven cavity, and is opened when the temperature of the oven cavity is greater than a first preset temperature, and is closed when the temperature of the oven cavity is less than a second preset temperature; the first preset temperature is greater than the second preset temperature;
the second temperature controller 420 is configured to measure an ambient temperature of the panel, and alternately switch on and switch off according to a preset time ratio when the ambient temperature of the panel is greater than a third preset temperature.
According to the oven provided by the embodiment of the invention, the oven comprises a live wire end L, a change-over switch 200, a heating module 300, a temperature control module 400 and a zero wire end N which are sequentially connected in series, wherein the temperature control module 400 comprises a first temperature controller 410 and a second temperature controller 420 which are mutually connected in series, and the temperature of the oven cavity is measured through the first temperature controller 410 and is compared with a preset temperature to control the heating module 300 to work or stop working so that the temperature of the oven cavity is stabilized near a target set temperature; the second temperature controller 420 is used for measuring the ambient temperature of the panel, and the temperature sensor is alternatively turned on and off according to the preset time proportion under the condition of reaching the third preset temperature, so that the temperature sensing delay defect caused by the distance between the temperature probe and the center of the oven cavity of the first temperature controller 410 is overcome, the temperature of the oven cavity is prevented from being far greater than the target set temperature when the heating module 300 stops working, and the temperature control precision can be effectively improved.
It can be appreciated that, since the first temperature controller 410 and the second temperature controller 420 are connected in series, the condition that the first temperature controller 410 is disconnected or the condition that the second temperature controller 420 is satisfied can stop the operation of the heating module 300; at the same time, the condition that the first thermostat 410 is closed and the condition that the second thermostat 420 is closed are satisfied, so that the heating module 300 can be powered on.
Specifically, in one example, the user uses the oven to bake, for example, the target temperature is set to 250 ℃, at which time the first preset temperature may be set to 250 ℃, that is, when the oven cavity temperature measured by the first temperature controller 410 is greater than 250 ℃, the first temperature controller 410 is turned off, so that the power supply to the heating module 300 is stopped, so that the heating module 300 stops working, and the oven cavity temperature gradually decreases after the heating module 300 stops working. In addition, the second preset temperature may be set to 230 ℃, that is, when the oven cavity temperature measured by the first temperature controller 410 is less than 230 ℃, the first temperature controller 410 is closed again to supply power to the heating module 300 again, so that the heating module 300 is operated again, and the oven cavity temperature will rise gradually after the heating module 300 is operated again. The heating module 300 is controlled to operate or stop operating by measuring the oven cavity temperature through the first thermostat 410 such that the oven cavity temperature is stabilized around the target set temperature. However, in the actual operation process of the oven, because the temperature probe of the first temperature controller 410 is spaced from the center of the oven cavity, there is a delay in the temperature measured by the first temperature controller 410, for example, when the measured temperature of the oven cavity is 250 ℃, the temperature of the center of the oven cavity has actually reached 270 ℃, so that the temperature inside the oven cavity is far higher than the target temperature set value of 250 ℃ when the heating module 300 stops working; for another example, when the measured oven cavity temperature is 230 ℃, the temperature in the center of the oven cavity is actually 210 ℃, such that the temperature inside the oven cavity is well below the target temperature set point 250 ℃ when the heating module 300 is re-operated.
The oven provided in this embodiment is based on the first temperature controller 410, and the second temperature controller 420 is connected in series to measure the panel ambient temperature. It should be noted that when the oven cavity temperature reaches about 250 ℃, the panel environmental temperature of the control panel of the oven is generally stabilized at about a certain temperature, for example, 60 ℃, and at this time, the third preset temperature may be set to 60 ℃, that is, when the panel environmental temperature measured by the second temperature controller 420 is greater than 60 ℃, the second temperature controller 420 is alternately turned on and off according to a preset time proportion, for example, the second temperature controller 420 is turned off again after being turned on for 30 seconds, so that the heating module 300 is alternately operated and stopped according to the preset time proportion, further, the oven cavity temperature is more maintained about 250 ℃, and the temperature of the oven cannot deviate too far, so that the temperature control accuracy of the oven is higher.
Referring to fig. 2, in the above oven, the alternately closing and opening according to a preset time ratio includes:
opening after closing the first preset time period T1;
and closing after opening the second preset time period T2.
When the panel environment temperature is greater than the third preset temperature, the operation duration and the stop operation duration of the heating module 300 are controlled by effectively utilizing the panel environment temperature and utilizing the oven cavity temperature in cooperation with the first temperature controller 410 by setting the closing duration of the second temperature controller 420 as the first preset duration TI and the opening duration of the second temperature controller 420 as the second preset duration T2, namely, setting the time proportion of alternately closing and opening the second temperature controller 420, so that the accuracy of the oven temperature control is improved.
It is understood that the first preset time period TI and the second preset time period T2 may be set to the same value, for example, both set to 30 seconds, or may be set to different values.
In the above-described oven, the first temperature controller 410 is a liquid expansion temperature controller or a temperature limiter. It will be appreciated that the first thermostat 410 may be replaced with other forms of thermostats.
In the above oven, the second temperature controller 420 is an adjustable temperature controller. It is understood that the second temperature controller 420 may be replaced by other switches capable of controlling the on/off of the time ratio.
In the above-described oven, the heating module 300 includes at least two heating elements connected in parallel with each other. For example, referring to fig. 1, the heating module 300 includes a first heating element 310 and a second heating element 320, and may even further include a third heating element 330, and a plurality of heating elements are provided to satisfy different cooking heating requirements.
The first heating element 310, the second heating element 320, and the third heating element 330 may be heating elements of a heating tube, or may be other heating elements such as a heating wire, a halogen tube, and the like.
In the oven described above, the change-over switch 200 comprises at least two switches, the live end L being connected to the first end of all the switches, the second end of the switches being connected to the heating element. Referring to fig. 1, for example, the transfer switch 200 includes a first switch 210 and a second switch 220, the live terminal L is connected to one end of the first switch 210 and one end of the second switch 220, the other end of the first switch 210 is connected to a first heating element 310, and the other end of the second switch 220 is connected to a second heating element 320; when the heating module 300 further includes the third heating element 330, the change-over switch 200 correspondingly further includes the third switch 230, the live terminal L is connected to one end of the third switch 230, and the other end of the third switch 230 is connected to the third heating element 330.
In addition, referring to fig. 1, in the above-mentioned oven, a first snap-action thermostat 500 is further provided between the live wire end L and the change-over switch 200. It should be noted that, the first snap-action thermostat 500 is normally closed, and has a high-temperature snap-off specification.
It can be appreciated that the first snap-action thermostat 500 is provided, so that the power supply to the change-over switch 200 and the heating module 300 can be stopped when the temperature is greater than the temperature protection threshold, thereby realizing the high temperature protection function of the oven.
Referring to fig. 1, in the above oven, a heat radiation fan 600 is disposed between the live wire end L and the neutral wire end N. The cooling fan 600 is arranged, and when the oven needs to be cooled, the cooling fan 600 is started, so that cooling is realized.
Referring to fig. 1, in the above-described oven, a second snap-action thermostat 700 is provided between the firing line end L and the heat radiation fan 600. It should be noted that, the second snap-action thermostat 700 is normally open and has a height Wen Bige.
It can be appreciated that, the second snap-action thermostat 700 is configured to close and conduct when the temperature is greater than the heat dissipation temperature triggering threshold, so as to supply power to the heat dissipation fan 600, so that the heat dissipation fan 600 dissipates heat from the oven.
Referring to fig. 1, in the above-described oven, a furnace lamp 800 is provided between the change-over switch 200 and the neutral wire end N. The oven lamp 800 is provided to illuminate the inside of the oven. Accordingly, the transfer switch 200 further includes a fourth switch 240, the live terminal L is connected to one end of the fourth switch 240, the other end of the fourth switch 240 is connected to one end of the burner lamp 800, and the other end of the burner lamp 800 is connected to the neutral terminal N.
In addition, referring to fig. 1, a second aspect of the embodiment of the present invention provides an oven including a power access module 100, a change-over switch 200, a heating module 300, and a temperature control module 400; the power access module 100 includes a live line end L and a neutral line end N; the change-over switch 200 is connected with the live wire end L; the heating module 300 is connected with the change-over switch 200; the temperature control module 400 is connected in series between the heating module 300 and the zero line end N, and the temperature control module 400 includes a liquid expansion type temperature controller 410 for measuring the temperature of the oven cavity and an adjustable temperature controller 420 for measuring the ambient temperature of the panel, which are connected in series with each other.
According to the oven provided by the embodiment of the invention, the oven comprises a live wire end L, a change-over switch 200, a heating module 300, a temperature control module 400 and a zero wire end N which are sequentially connected in series, wherein the temperature control module 400 comprises a liquid expansion type temperature controller 410 and an adjustable temperature controller 420 which are mutually connected in series, and the temperature of the oven cavity is measured by the liquid expansion type temperature controller 410 to control the heating module 300 to work or stop working so that the temperature of the oven cavity is stabilized near a target set temperature; the temperature controller 420 is used for measuring the ambient temperature of the panel to control the heating module 300 to work or stop working, so that the temperature sensing delay defect caused by the distance between the temperature probe and the center of the oven cavity of the liquid expansion type temperature controller 410 is overcome, the temperature of the oven cavity is prevented from being far greater than the target set temperature when the heating module 300 stops working, and the temperature control precision can be effectively improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (10)
1. An oven, comprising:
the power supply access module comprises a fire wire end and a zero wire end;
the change-over switch is connected with the live wire end;
the heating module is connected with the change-over switch;
the temperature control module is connected in series between the heating module and the zero line end and comprises a first temperature controller and a second temperature controller which are mutually connected in series;
wherein:
the first temperature controller is used for measuring the temperature of the oven cavity, and is opened when the temperature of the oven cavity is higher than a first preset temperature, and is closed when the temperature of the oven cavity is lower than a second preset temperature; the first preset temperature is greater than the second preset temperature;
the second temperature controller is used for measuring the panel environment temperature and alternately switching on and switching off according to a preset time proportion under the condition that the panel environment temperature is larger than a third preset temperature.
2. The oven of claim 1 wherein the alternating on and off of the preset proportion of time comprises:
opening after closing the first preset time period;
and closing after opening the second preset time period.
3. The oven of claim 1 wherein the first temperature controller is a liquid expansion temperature controller or a temperature limiter.
4. The oven of claim 1 wherein the second temperature controller is an adjustable temperature controller.
5. The oven of claim 1 wherein the heating module comprises at least two heating elements connected in parallel with each other.
6. The oven of claim 5 wherein said change-over switch comprises at least two switches, said live end being connected to a first end of all of said switches, a second end of said switches being connected to said heating element.
7. The oven of claim 1 wherein a first snap-action thermostat is also provided between the hot end and the change-over switch.
8. The oven of claim 1 wherein a heat dissipating fan is disposed between the hot and neutral ends.
9. The oven of claim 8 wherein a second snap-action thermostat is disposed between the hot end and the heat dissipating fan.
10. The oven of claim 1 wherein a stove light is disposed between the change-over switch and the neutral wire end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659473.9A CN114129068B (en) | 2021-12-30 | 2021-12-30 | Oven with a baking oven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659473.9A CN114129068B (en) | 2021-12-30 | 2021-12-30 | Oven with a baking oven |
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| CN114129068A CN114129068A (en) | 2022-03-04 |
| CN114129068B true CN114129068B (en) | 2023-08-22 |
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| CN110037567A (en) * | 2019-04-09 | 2019-07-23 | 中山百得厨卫有限公司 | A kind of operation control formula oven and its control method |
| CN113384160A (en) * | 2021-07-14 | 2021-09-14 | 小熊电器股份有限公司 | Power adjusting circuit, power adjusting method and electric chafing dish |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204536844U (en) * | 2015-04-27 | 2015-08-05 | 广东美的厨房电器制造有限公司 | Cooking apparatus protection circuit and cooking apparatus |
| CN205433413U (en) * | 2016-01-04 | 2016-08-10 | 广东新宝电器股份有限公司 | Electric oven temperature rise control circuit |
| CN106580118A (en) * | 2016-12-09 | 2017-04-26 | 广东美的厨房电器制造有限公司 | Oven and control method of oven |
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| CN114129068A (en) | 2022-03-04 |
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