TWI793738B - Gas stove capable of rapid constant temperature heating and rapid constant temperature heating method thereof - Google Patents

Abstract

A gas stove capable of rapid constant temperature heating and a rapid constant temperature heating method are provided. The gas stove includes a burner, a temperature sensor, a firepower adjustment unit and a control circuit. The control circuit controls the burner to perform a constant temperature heating according to the firepower adjustment unit and the temperature sensor, so that a target object reaches a target temperature. The control circuit obtains an initial firepower through the firepower adjustment unit and the temperature sensor to obtain an initial temperature, and calculates a firepower switching temperature according to the target temperature. When the temperature of the target object measured by the temperature sensor is equal to the firepower switching temperature, the control circuit controls the firepower of the burner to switch from the initial firepower to a decay firepower, so that the temperature of the target object reaches the target temperature.

Description

Gas furnace capable of rapid constant temperature heating and its rapid constant temperature heating method

The invention relates to a gas furnace, in particular to a constant temperature heating gas furnace and a constant temperature heating method.

In addition to the general heating function, the existing gas stove can also provide a constant temperature heating mode for heating to a set temperature. However, in this constant temperature heating mode, after the temperature of the heating object reaches the set temperature, the heating source is reduced, so that the temperature of the heating object can drop to the set temperature after exceeding the set temperature.

The technical problem to be solved by the present invention is to provide a rapid constant temperature heating gas furnace and a rapid constant temperature method thereof, which can effectively improve the constant temperature heating accuracy of the gas furnace.

An embodiment of the present invention provides a gas stove capable of rapid constant temperature heating, including a burner, a temperature sensor, a fire power adjustment part and a control circuit. The burner heats a target object; the temperature sensor measures the temperature of the target object; the fire power adjustment part adjusts the fire power of the burner; The adjustment part and the temperature sensor control the burner to perform a constant temperature heating, so that the target object reaches a target temperature. When the control circuit performs constant temperature heating, an initial firepower is obtained through the firepower adjustment unit and an initial temperature is obtained by the temperature sensor, and a firepower switching temperature is calculated according to the target temperature. The firepower switching temperature is greater than the initial temperature and lower than the target temperature. When the temperature sensor measures the temperature of the target object from the initial temperature to the temperature equal to the fire switching temperature, the control circuit controls the fire power of the burner to switch from the initial fire power to an attenuation fire power, so that the temperature of the target object reaches the target The temperature where the initial firepower is greater than the decay firepower.

An embodiment of the present invention provides a rapid constant temperature heating method for a gas furnace, including: obtaining a target temperature; obtaining an initial fire power through a fire power adjustment part of the gas furnace and obtaining an initial temperature by a temperature sensor, wherein the temperature sensor is used for Measuring the temperature of a target object heated by the gas furnace; calculating a fire power switching temperature according to the target temperature, wherein the fire power switching temperature is greater than the initial temperature and lower than the target temperature; and when the temperature sensor measures the temperature of the target object by When the initial temperature rises to be equal to the firepower switching temperature, the gas furnace controls the combustion firepower to switch from the initial firepower to a decaying firepower, so that the temperature of the target object reaches the target temperature, wherein the initial firepower is greater than the decaying firepower.

To sum up, in the gas furnace capable of rapid constant temperature heating and its rapid constant temperature heating method provided by the embodiment of the present invention, the actual initial firepower is used for heating in the front stage, and when the temperature reaches a switching time point, the initial firepower is switched To attenuate the firepower to slow down the temperature rise slope, so that the heating temperature will not exceed the target temperature, and then achieve the constant temperature effect of precise temperature control.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings related to the present invention. However, the provided drawings are only for reference and description, and are not intended to limit the present invention.

The implementation of the present invention is illustrated through specific specific examples below, and those skilled in the art can understand the advantages and effects of the present invention from the content provided in this specification. The present invention can be implemented or applied through other different specific embodiments, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only for simple illustration, and are not drawn according to the actual size, which is stated in advance. The following embodiments will further describe the relevant technical content of the present invention in detail, but the provided content is not intended to limit the protection scope of the present invention.

It should be understood that although terms such as "first", "second", and "third" may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or a combination of more of the associated listed items depending on the actual situation.

Embodiments of the present invention provide a gas furnace capable of rapid constant temperature heating and a rapid constant temperature heating method. The gas furnace described here is capable of constant temperature heating operation. In order to quickly and accurately reach the set target temperature, the gas furnace adopts Using the time-sharing heating method of different heat sources, first heat with the initial firepower that can be heated quickly, and then heat with the decaying firepower that can accurately control the temperature, so that the gas furnace can quickly achieve the effect of constant temperature at the target temperature.

Embodiment of the hardware architecture of the gas stove

Please refer to FIG. 1 and FIG. 2 respectively. FIG. 1 is a schematic diagram of a gas furnace capable of rapid constant temperature heating provided by an embodiment of the present invention, and FIG. 2 is a functional block diagram of a gas furnace capable of rapid constant temperature heating provided by an embodiment of the present invention. The gas stove 1 capable of rapid constant temperature heating described in this embodiment includes, but is not limited to, a control circuit 10, a fire power adjustment part 11, a setting part 12, a temperature sensor 13, a fire power switching valve 14, a burner 15 and a display part 16 . Here, the structure of the gas stove 1 is only described for the components related to the invention, but it does not mean that the gas stove 1 is limited thereto, and components can be added or deleted according to different usage requirements. In one embodiment, the gas furnace 1 can not only heat the target TA in general, but also can heat the target TA at a constant temperature according to the target temperature set by personnel.

In one embodiment, the control circuit 10 is electrically connected to the heating power adjustment unit 11 , the setting unit 12 , the temperature sensor 13 , the heating power switching valve 14 and the display unit 16 . The fire power adjustment unit 11 provides personnel operations to fire the gas furnace 1 and adjust the fire power. In one embodiment, the fire power adjustment unit 11 may include a switch sensing element 111 and a fire power adjustment element 112 . The switch sensing element 111 is used to detect the fire adjustment angle of the fire adjustment element 112 , and the control circuit 10 obtains the initial fire power F1 according to the detection result of the switch sensing element 111 . The switch sensing element 111 is, for example, an angle sensing element, and the fire power adjustment element 112 is, for example, a knob. However, it should be noted that, the embodiment of the fire power adjustment unit 11 of the present invention is not limited thereto.

The setting part 12 is operated by personnel to set the target temperature when the gas furnace 1 performs constant temperature heating. The setting part 12 can be, for example, any combination of a knob interface, a key interface or a touch display interface. The temperature sensor 13 can be used to measure the temperature of the target TA heated by the burner 15 , for example, the temperature sensor 13 is disposed at a proper position on the bottom side of the target TA. The target object TA mentioned here is, for example, a pot. When the burner 15 heats the bottom of the pot, the temperature sensor 13 can measure the temperature of the bottom of the pot and transmit the measurement result to the control circuit 10 .

The fire power switching valve 14 relatively regulates the flow rate of the gas G1 entering the burner 15 according to the initial fire power F1 input by the fire power adjustment unit 11, so that the burner 15 heats the target object TA according to the received gas G1 flow rate.

The display unit 16 can display the relevant state of the gas furnace 1 according to the control of the control circuit 10, such as displaying target temperature, the measurement result of the temperature sensor 13, or various combination changes of information such as heating time, but the present invention does not This is the limit. The display unit 16 can be various combinations of display lamps or display panels.

In one embodiment, when the gas furnace 1 starts constant temperature heating through the operation of the setting part 12, the control circuit 10 can further The firepower of the burner 15 is automatically controlled so that the temperature of the target object TA can reach the constant temperature effect of the target temperature.

Please refer to FIG. 3 . FIG. 3 is a waveform diagram of constant temperature heating provided by an embodiment of the present invention. When the gas furnace 1 performs constant temperature heating on the target object TA, the control circuit 10 can obtain the target temperature set and input by personnel through the setting part 12 , and can obtain the initial temperature of the target object TA through the temperature sensor 13 . When the gas furnace 1 starts heating, the initial firepower F1 determined by the firepower adjustment unit 11 can make the burner 15 quickly heat the target TA, and in order to prevent the temperature of the target TA from exceeding the target temperature, the control circuit 10 continues to transmit the temperature The sensor 13 measures the temperature change of the target TA, and when the temperature of the target TA is equal to the fire power switching temperature, the control circuit 10 controls the fire power of the burner 15 to switch from the initial fire power F1 to the decay fire power F2.

Further, the heating time between the initial temperature and the switching temperature of the gas furnace 1 is using the initial heating power F1, and the heating time of the gas furnace 1 between the switching temperature of the heating power and the target temperature is using the decaying heating power F2. Therefore, by heating the target object TA with different heating methods before the target temperature, the temperature of the target object TA can be quickly and accurately maintained.

It is worth noting that the initial firepower F1 described here is greater than the decaying firepower F2, that is to say, when the temperature of the target TA does not reach the firepower switching temperature, the burner 15 uses a relatively large initial firepower F1 The target object TA is rapidly heated. And when the temperature of the target object TA reaches the fire power switching temperature, the burner 15 heats the target object TA with precise temperature control with a relatively small fire power attenuated fire power F2. In addition, it is specifically stated that the fire power switching temperature is greater than the initial temperature and lower than the target temperature.

In one embodiment, the switching temperature of the fire power is preferably close to the target temperature, so as to ensure that the gas furnace 1 can provide fast and accurate constant temperature heating effect on the target object TA. A specific implementation of the fire power switching temperature will be described in detail later on possible calculation methods. In addition, the attenuated firepower F2 can be, for example, less than 10% of the initial firepower F1 or a preset fixed firepower, but it is not limited thereto.

Embodiment of the Rapid Constant Temperature Method for Gas Furnace

Please refer to Figure 4. Fig. 4 is a flowchart of rapid constant temperature heating provided by the embodiment of the present invention. The flow chart shown in FIG. 4 is illustrated by the architectures of FIG. 1 and FIG. 2 , but is not limited thereto. The process shown in Fig. 4 includes the following steps.

In step S401, the initial firepower F1 is set. When a person operates the fire power adjustment part 11 to start the firing action of the gas stove 1 , the gas stove 1 can set the initial fire power F1 relatively according to the fire power adjustment position of the fire power adjustment part 11 .

In step S403, a target temperature is set. When a person operates the setting part 12, the gas furnace 1 can obtain the target temperature according to the temperature setting result of the setting part 12, so that the subsequent gas furnace 1 can carry out constant temperature control to heat the target object TA to the target temperature.

In step S405, the heat switching temperature is calculated. After the initial firepower F1 and the target temperature are set, the gas furnace 1 can calculate the required firepower switching temperature according to these settings during the heating process, and make the firepower switching temperature between the initial temperature and the target temperature , and the fire switching temperature is close to the target temperature.

In step S407, the temperature reaches the fire power switching temperature and switches to the damping fire power F2. After the initial firepower F1 is set in step S401, the gas furnace 1 heats the target TA with the initial firepower F1, and during this heating process, the gas furnace 1 continuously measures the target through the temperature sensor 13 The temperature of the object TA changes, and until the temperature of the target object TA rises from the initial temperature to equal to the fire switching temperature, the gas furnace 1 automatically switches the originally used initial fire power F1 to the attenuated fire power F2, and subsequently uses the attenuated fire power F2 The target TA is heated, and finally the temperature of the target TA can be precisely controlled to the target temperature.

Please refer to Figure 5. Fig. 5 is a flowchart of another rapid constant temperature heating according to the embodiment of the present invention. The flow chart shown in FIG. 5 is illustrated by the architectures of FIG. 1 and FIG. 2 , but is not limited thereto. The process shown in Fig. 5 includes the following steps.

In step S501, fire is started. When the fire power adjustment element 112 in the fire power adjustment part 11 is activated by personnel to fire, the gas stove 1 can ignite the burner 15 .

In step S503, the firepower is adjusted. When the fire power adjustment element 112 is adjusted to a determined fire power position by personnel, the gas stove 1 can control the burner 15 to output corresponding heating fire power according to the fire power position.

In step S505, a target temperature is set. When the setting part 12 is operated by personnel to set and input a target temperature, the gas furnace 1 will heat the bottom of the pan to the target temperature for constant temperature control.

In step S507, the temperature sensor 13 measures the temperature of the pot bottom. When the gas stove 1 heats the bottom of the pot, the latest temperature change of the bottom of the pot is measured by the temperature sensor 13 at the same time.

In step S509, it is judged whether the temperature of the bottom of the pot reaches the switching temperature of the heating power.

In step S511, switch to damping firepower F2. When the temperature of the bottom of the pan reaches the firepower switching temperature, the heating firepower of the gas stove 1 will be switched from the initial firepower F1 to the attenuation firepower F2.

In step S513, the target temperature is reached. When the gas stove 1 is heated with the attenuated firepower F2, the temperature of the bottom of the pan will gradually increase from the firepower switching temperature to the target temperature at a slow speed.

In step S515 , the switch sensing element 111 returns the initial fire power F1 . When the firepower position of the firepower adjustment element 112 is adjusted, the switch sensing element 111 can detect a firepower adjustment angle of the firepower adjustment element 112, and return the initial firepower F1 represented by the firepower adjustment angle to the control circuit 10, Based on this, the control circuit 10 can know the initial fire power F1 after the gas furnace 1 is fired and heated.

In step S517, the temperature rise slope of the initial heating power is calculated. After the control circuit 10 obtains the initial firepower F1, it also obtains the initial temperature of the bottom of the pan from the temperature sensor 13 when the gas stove 1 is fired and heated. The control circuit 10 can calculate the temperature rise slope from the initial temperature according to the initial firepower F1, so as to obtain a temperature rise temperature of the initial firepower F1 within a unit time.

In step S519, the temperature rise slope of the damping firepower F2 is calculated. After the control circuit 10 calculates the temperature rise slope of the attenuated firepower F2, it can know a temperature rise temperature of the attenuated firepower F2 within a unit time.

In step S521, the fire power switching temperature for early switching is estimated. After the control circuit 10 obtains the temperature rise slope of the initial firepower F1, the temperature rise slope of the decay firepower F2, the initial temperature and the target temperature, the control circuit 10 can relatively calculate a suitable firepower switching temperature based on these values.

In one embodiment, the control circuit 10 obtains a temperature rise temperature of the decay firepower F2 in a unit time according to a temperature rise slope of the decay firepower F2, and subtracts the temperature rise temperature in a unit time from the target temperature to obtain Firepower switch temperature. The unit time may be, for example, 1 minute, or there may be correspondingly different unit times according to different initial firepower F1 and initial temperature, but the present invention is not limited thereto.

In one embodiment, the control circuit 10 multiplies the target temperature by a predetermined ratio to obtain the fire switching temperature, and the fire switching temperature is close to the target temperature, and the preset ratio is greater than zero and less than 1.

In one embodiment, when the control circuit 10 knows the initial temperature, the temperature rise slope of the initial firepower F1, the temperature rise slope of the decay firepower F2, and the target temperature, the control circuit 10 calculates the firepower switching temperature according to the relative calculation, That is to say, under the firepower switching temperature at this moment, when the bottom of the pan is heated by the initial firepower F1, the temperature of the bottom of the pan is changed from the initial temperature to the required time T1 of the firepower switching temperature. The total time obtained by switching the time T2 required for the temperature change to the target temperature is the shortest time.

In one embodiment, the control circuit 12 can be, for example, one or any combination of an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or a system-on-chip (SOC), and can cooperate with other related circuits. Components and associated firmware to achieve the above functional operations.

[Advantageous Effects of Embodiment]

The gas furnace capable of rapid constant temperature heating and the rapid constant temperature heating method provided by the present invention, when heating the target object with two stages of different firepower, especially the method of first heating with high firepower and then heating with low firepower, and the two stages The time point of fire power switching is between the initial temperature and the target temperature, so that the gas furnace can quickly and accurately heat up to the constant temperature of the target temperature.

The content provided above is only a preferred feasible embodiment of the present invention, and does not therefore limit the scope of the patent application of the present invention, so all equivalent technical changes made by using the description and drawings of the present invention are included in the application of the present invention within the scope of the patent.

1: Gas stove 10: Control circuit 11:Fire Adjustment Department 111: switch sensing element 112: Fire adjustment element 12: Setting Department 13: Temperature sensor 14: Fire switching valve 15: Burner 16: Display part G1: gas F1: initial firepower F2: Attenuate firepower TA: Target S401: Set the initial firepower S403: Set target temperature S405: Calculating the fire switching temperature S407: When the temperature reaches the firepower switch, the temperature is switched to attenuation firepower S501: Fire S503: Adjust firepower S505: Set target temperature S507: The temperature sensor measures the temperature of the bottom of the pot S509: The temperature of the bottom of the pot reaches the fire switching temperature S511: Switch to attenuation firepower S513: Reach the target temperature S515: The switch sensing element returns the initial firepower S517: Calculating the temperature rise slope of the initial firepower S519: Calculating the temperature rise slope of the attenuated firepower S521: Calculating the fire switching temperature for early switching

Fig. 1 is a schematic diagram of a gas furnace capable of rapid constant temperature heating provided by an embodiment of the present invention.

Fig. 2 is a functional block diagram of a gas furnace capable of rapid constant temperature heating provided by an embodiment of the present invention.

Fig. 3 is a waveform diagram of constant temperature heating provided by the embodiment of the present invention.

Fig. 4 is a flowchart of providing rapid constant temperature heating according to the embodiment of the present invention.

Fig. 5 is a flowchart of another rapid constant temperature heating according to the embodiment of the present invention.

1: Gas stove

10: Control circuit

11:Fire Adjustment Department

12: Setting Department

13: Temperature sensor

14: Fire switching valve

15: Burner

16: Display part

TA: Target

Claims (10)

A gas stove capable of rapid constant temperature heating, comprising: a burner for heating a target object; a temperature sensor for measuring the temperature of the target object; a fire power adjustment part for adjusting the fire power of the burner; and A control circuit, electrically connected to the fire power adjustment part and the temperature sensor, the control circuit controls the burner to perform constant temperature heating according to the fire power adjustment part and the temperature sensor, so that the target object reaches a target temperature ; Wherein when the control circuit executes the constant temperature heating, an initial firepower is obtained through the firepower adjustment part and an initial temperature is obtained by the temperature sensor, and a firepower switching temperature is calculated according to the target temperature, and the firepower switching temperature is greater than the starting temperature The initial temperature is less than the target temperature; wherein when the temperature sensor measures the temperature of the target object from the initial temperature to be equal to the fire switching temperature, the control circuit controls the fire of the burner from the initial The firepower is switched to an attenuated firepower so that the temperature of the target reaches the target temperature, wherein the initial firepower is greater than the attenuated firepower; wherein after the control circuit obtains the initial firepower and the initial temperature, the control circuit according to the The initial firepower calculates the temperature rise slope from the initial temperature to obtain a temperature rise temperature of the initial firepower within a unit time; wherein the control circuit calculates the temperature rise slope of the attenuation firepower to obtain A temperature rise temperature of the attenuated firepower in a unit time; wherein the control circuit calculates the firepower according to the temperature rise slope of the initial firepower, the temperature rise slope of the attenuated firepower, the initial temperature and the target temperature Toggle temperature. The gas furnace capable of rapid constant temperature heating as described in Claim 1, wherein the control circuit subtracts the temperature rise temperature of the decaying firepower within a unit time from the target temperature to obtain the firepower switching temperature. The gas furnace capable of rapid constant temperature heating as described in Claim 1, wherein the control circuit multiplies the target temperature by a preset ratio value to obtain the fire switching temperature, and the preset ratio value is greater than zero and less than 1. The gas furnace capable of rapid constant temperature heating as described in Claim 1, wherein the control circuit calculates the fire power switching temperature so that when the initial fire power heats the target, the temperature changes from the initial temperature to the fire power switching temperature The total time obtained by adding the required time plus the time required for the temperature to change from the fire power switching temperature to the target temperature when the target is heated with the attenuated fire power is the shortest time. The gas furnace capable of rapid constant temperature heating as described in claim 1 further includes a setting part and a display part, the setting part and the display part are electrically connected to the control circuit, and the control circuit obtains the target according to the setting part temperature input, and display any combination of the target temperature, the measurement result of the temperature sensor and the heating time by controlling the display part, the fire power adjustment part includes a fire power adjustment element and a switch sensing element, the switch sense The detection element detects a fire adjustment angle of the fire adjustment element, and the control circuit obtains the initial fire power according to the detection result of the switch sensing element. A rapid constant temperature heating method for a gas furnace, comprising: obtaining a target temperature; obtaining an initial fire power through a fire power adjustment part of the gas furnace and obtaining an initial temperature by a temperature sensor, wherein the temperature sensor is used to measure the The temperature of a target object heated by the gas furnace; a fire power switching temperature is calculated according to the target temperature, wherein the fire power switching temperature is greater than the initial temperature and lower than the target temperature; and when the temperature sensor measures the target object When the temperature of the gas furnace rises from the initial temperature to the switching temperature of the fire power, the gas furnace controls the combustion fire power to switch from the initial fire power to an attenuation fire power so that the temperature of the target reaches the target temperature, wherein the initial fire power Greater than the attenuation firepower; Wherein, when the gas furnace obtains the initial firepower and the initial temperature, the temperature rise slope from the initial temperature is calculated according to the initial firepower, so as to know the temperature of the initial firepower in a unit time temperature rise; wherein the gas furnace obtains a temperature rise temperature of the decaying fire power in a unit time by calculating the temperature rise slope of the decaying fire power; wherein the gas furnace obtains the temperature rise slope of the initial fire power, the The firepower switching temperature is calculated by comparing the temperature rise slope of the attenuation firepower, the initial temperature and the target temperature. The rapid constant-temperature heating method for a gas furnace as described in Claim 6, wherein the target temperature of the gas furnace is subtracted from the temperature rise temperature of the attenuation fire power within a unit time to obtain the fire power switching temperature. The rapid constant-temperature heating method for a gas furnace as described in Claim 6, wherein the gas furnace multiplies the target temperature by a preset ratio value to obtain the fire power switching temperature, and the preset ratio value is greater than zero and less than 1. The rapid constant temperature heating method of the gas furnace as described in claim 6, wherein the gas furnace calculates the fire power switching temperature so that when the initial fire power heats the target, the temperature changes from the initial temperature to the fire power switching temperature The total time obtained by adding the required time plus the time required for the temperature to change from the fire power switching temperature to the target temperature when the target is heated with the attenuated fire power is the shortest time. The rapid constant temperature heating method of the gas furnace as described in claim 6, further comprising: obtaining the input of the target temperature through a setting part of the gas furnace; displaying the target temperature and the temperature sensing through a display part of the gas furnace Any combination of the detection results of the device; wherein the gas stove detects a fire adjustment angle of a fire adjustment element through a switch sensing element, and obtains the initial fire power through the detection result of the switch element.

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