CN211625340U

CN211625340U - Gas stove

Info

Publication number: CN211625340U
Application number: CN201922181847.5U
Authority: CN
Inventors: 史井雄; 严力峰; 郑军妹; 钟健
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-10-02
Anticipated expiration: 2029-12-06

Abstract

The utility model relates to a gas stove, including inlaying the combustor of establishing on the panel to and the control circuit board of setting in the panel below, its characterized in that: still include transparent and infrared receiver, the position of going out a fire corresponding to the combustor sets up the through-hole on the panel, and transparent sets up in the through-hole, infrared receiver sets up the below of transparent and is connected with control circuit board electricity. The gas stove utilizes the infrared receiver to obtain the infrared radiation signal of the flame generated by the burner, so as to judge whether the flame exists or not, and simultaneously, the size of the flame can be judged according to the intensity of the received infrared radiation signal. In the process, the infrared receiver does not need to be in contact with flame, so that the service life of the infrared receiver is long. And the infrared receiver obtains the infrared radiation of the flame fast, and the fire detection is real-time quick. In addition, the infrared flame detection precision is high, and even if the flame is away from the flame, misjudgment cannot be caused. Meanwhile, the infrared probe used as the infrared receiver has low cost.

Description

Gas stove

Technical Field

The utility model relates to a gas stove.

Background

The gas stove is usually provided with a device for detecting flame to ensure the use safety of the gas stove, and the flame detection in the working process of the stove is mostly realized by adopting an ion induction or thermocouple detection mode at present. When the flame detection is carried out by adopting a thermocouple detection mode, the flame detection reaction time is slow due to the characteristics of the thermocouple. The flame detection by the ion induction method is easily affected by the temperature and humidity in the environment, and the fire detection fails. Meanwhile, the two fire detection modes need to be in direct contact with fire, and fire detection failure is easily caused under the condition that flame is away from flame or wind blows. The thermocouple fire detection mode and the flame ion induction mode both need to enable an induction part to be in contact with fire, and due to the high temperature of the fire, fire sensing parts are easy to burn out, or aging is easy to affect functions after the time elapses. The existing thermocouple and the ion inductor have high cost and are troublesome to install, and meanwhile, firepower can be judged only in a fireless mode during working, and firepower detection cannot be carried out.

For example, chinese patent application publication No. CN108571725A (application No. 201810077355.9) discloses a kitchen range burner, in which a flame detection sensor for detecting oil contamination of combustion flame outside a specific flame hole is disposed in a manner of facing the specific flame hole, and the flame detection sensor is in direct contact with flame to detect flame. The flame detection sensor of this structure has the aforementioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a gas stove capable of rapidly acquiring flame and firepower without contacting with flame is provided to the prior art.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a gas-cooker, includes to inlay the combustor of establishing on the panel to and set up the control circuit board in the panel below, its characterized in that: still include transparent and infrared receiver, the position of being on the panel and setting up the through-hole corresponding to the play fire of combustor, transparent is corresponding to the through-hole setting, infrared receiver sets up the below of transparent and is connected with control circuit board electricity.

In order to conveniently detect the placement condition of a pot on the cooker, an infrared emitter is further arranged below the transparent part and electrically connected with the control circuit board, and an infrared receiver and the infrared emitter are integrally arranged to form an infrared sensor.

In order to facilitate installation and arrangement, the infrared sensor is fixedly connected to the control circuit board.

Preferably, the infrared sensor is arranged in the fixing piece, an installation cavity with an upward opening is formed in the fixing piece, and the infrared receiver and the infrared transmitter are correspondingly arranged in the installation cavity.

In order to enhance the intensity of the transmitted infrared signal, a light-gathering cup is arranged on the periphery of the infrared sensor.

Preferably, a supporting plate is arranged below the panel, and a connecting plate fixedly connected with the panel extends upwards from the supporting plate.

In order to conveniently display the detection result and facilitate the user to check, a display screen electrically connected with the control circuit board is further embedded in the panel.

Compared with the prior art, the utility model has the advantages of: the gas stove utilizes the infrared receiver to obtain the infrared radiation signal of the flame generated by the burner, so as to judge whether the flame exists or not, and simultaneously, the size of the flame can be judged according to the intensity of the received infrared radiation signal. In the process, the infrared receiver does not need to be in contact with flame, so that the service life of the infrared receiver is long. And the infrared receiver obtains the infrared radiation of the flame fast, and the fire detection is real-time quick. In addition, the infrared flame detection precision is high, and even if the flame is away from the flame, misjudgment cannot be caused. Meanwhile, the cost of the infrared probe used as the infrared receiver is as low as a few gross money.

Drawings

Fig. 1 is a perspective view of a gas range in an embodiment of the present invention.

Fig. 2 is a sectional view of a gas stove in the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 and 2, the gas range in this embodiment is installed on a panel 1, and specifically includes a burner 2 embedded in the panel 1, a control circuit board 3 disposed below the panel 1 corresponding to the burner 2, a transparent member 4, an infrared receiver, an infrared transmitter, a fixing member 6, a light-gathering cup 7, a support plate 8, and a display screen 9.

The burner 2 is embedded on the panel 1, the combustion chamber of the burner 2 is positioned above the panel 1, and other parts of the burner 2 are positioned below the panel 1. The position of going out fire of combustor 2 sets up the through-hole on the panel 1, if combustor 2 includes inner ring fire hole and outer loop fire hole, then set up the through-hole in the panel 1 outer position along directly below corresponding to inner ring fire hole and outer loop fire hole, transparent 4 corresponds to the through-hole setting, this transparent 4 can be installed in each through-hole through the mode of tight fit, if combustor's periphery has the extension board of fixing on the panel, this transparent 4 also can set up in the extension board, the extension board is corresponding to transparent 4's mounted position from top to bottom penetrating setting can. The transparent member 4 in this embodiment is a lens.

The support plate 8 is disposed below the panel 1 corresponding to the installation area of the burner 2, the support plate 8 is horizontally disposed, and the support plate 8 is upwardly extended to be provided with a connection plate 81 fixedly connected with the panel 1, so that the support plate 8 is installed on the panel 1 by fixing the connection plate 81 on the lower surface of the panel 1.

The control circuit board 3 is mounted on the support plate 8 and positioned below the burner 2, so that the distance between the control circuit board 3 and the burner 2 can be shortened and the wiring length can be reduced.

The infrared receiver and the infrared transmitter are integrally arranged into an infrared sensor 5, if the infrared sensor 5 with a transmitting head and a receiving head in the prior art can be used, the infrared sensor 5 is fixedly arranged on the control circuit board 3 through the fixing part 6, and the infrared receiver and the infrared transmitter in the infrared sensor 5 are electrically connected with the control circuit board 3. Further, an infrared sensor 5 is located right below the transparent member 4 so as to receive an infrared radiation signal or emit an infrared signal through the transparent member 4. The position that corresponds to infrared sensor 5 in the mounting 6 is provided with the installation cavity 61 of opening upwards, and infrared sensor 5 sets up in installation cavity 61 to infrared sensor 5's periphery is provided with spotlight cup 7, and spotlight cup 7 also is located the installation cavity 61 that corresponds, and this spotlight cup 7 expands the setting gradually outward from bottom to top, can be used to reinforcing infrared signal.

The display screen 9 is embedded on the panel 1 and electrically connected with the control circuit board 3, and the control circuit board 3 can judge whether the gas stove has fire or not and the fire power according to the signal transmitted by the infrared receiver, and further display the judgment result on the display screen 9.

The high temperature radiation generated by combustion of gas is mainly within 5um, but the infrared radiation distance is shortened due to absorption of carbon dioxide and water vapor in air. And the infrared radiation generated by the flame is 0.7-1 um, so that the penetration rate of the infrared radiation in smoke and water vapor and in glass and lenses is high, and the infrared radiation is easy to detect. Therefore, the infrared receiver can select the infrared receiver capable of receiving the wavelength of 0.7-1 um. Meanwhile, materials such as a cooker for cooking and heating and the combustor 2 are heated in the cooking process, and the radiated infrared wavelength is concentrated above 2um, so that the infrared receiver does not interfere with the detection of flame. The infrared emitter with the infrared band of 0.7 um-1 um is selected for emission. The infrared receiver receives flame infrared radiation and converts the flame infrared radiation into a current signal, and the current signal is converted into a voltage signal through a circuit on the control circuit board 3 and is converted into an AD value within a range of 0-255 through an A/D converter. The control circuit board 3 can control the infrared emitter to emit infrared rays.

After the stove is ignited, the AD value M of the infrared receiver is checked every 1 second, if M is larger than or equal to 240, no fire is indicated, and if M is smaller than 240, fire is indicated. Meanwhile, under the condition that the AD value M is not changed, the control circuit board 3 controls the infrared light emitting tubes to emit infrared light, a new infrared AD value N is obtained, and through comparing the N value with the M value, when the M-N value is larger than or equal to a certain threshold value, a pot is judged to be available, otherwise, no pot is judged to be available.

When the burner 2 includes the inner ring fire hole and the outer ring fire hole, two infrared sensors 5 are correspondingly provided, and for convenience of the following description, the two infrared sensors 5 are recorded as a first infrared sensor 5 and a second infrared sensor 5. The first infrared sensor 5 is used to detect the condition of the outer ring fire and the second infrared sensor 5 is used to detect the condition of the inner ring fire.

Specifically, in the case of a fire, if it is detected that the AD value of the first infrared sensor 5 or the second infrared sensor 5 is 240 or more, it indicates that there is no fire. And when the AD values of the first infrared sensor 5 and the second infrared sensor 5 are less than 240 at the same time, the combustion of the internal fire and the external fire of the cooker is indicated. When the AD value of the first infrared sensor 5 is more than or equal to 240, and the AD value of the second infrared sensor 5 is less than 240, the cooker only burns by inner ring fire. In case of fire, the AD values of the two infrared sensors 5 are detected to be 210 or more and 240 or less, indicating a small fire. In case of fire, the AD values of the two infrared sensors 5 are detected to be more than 170 and less than or equal to 210, which indicates the fire. In case of fire, the AD values of the two infrared sensors 5 are detected to be 170 less, indicating a fire.

The control circuit board 3 can judge whether the fire holes of the inner ring and the outer ring are blocked or abnormal in combustion by combining the received fire data of the fire adjusting knob and the fire detection results of the first infrared sensor 5 and the second infrared sensor 5. If the firepower adjusting knob controls the inner ring to have fire, but the second infrared sensor 5 for detecting the flame of the inner ring detects that the AD value is more than or equal to 240, the inner ring fire is extinguished or part of fire holes are blocked; for example, the second infrared sensor 5 controls the fire of the inner and outer rings, but the AD value of the first infrared sensor 5 for detecting the flame of the outer ring is 240 or more, which indicates that the outer ring is either extinguished or a part of the fire hole is blocked. Therefore, the combustion fault can be effectively detected by judging, and fire can be turned off or a user can be reminded to process through the control circuit board 3.

When the existence or nonexistence of the cooker and the firepower are detected, the infrared light emitting tube can be controlled to emit infrared, the AD value N of the infrared receiving tube is detected, and if M-N is more than or equal to 20, the cooker can be judged to be possibly placed on the gas cooker; and then closing the infrared transmitting tube, detecting the AD value F of the infrared receiving tube, if the absolute value of M-F is less than or equal to 10, judging that a pot exists, and if the absolute value of M-F is greater than 10, judging that the firepower is adjusted. If M-N is less than 20, it is judged that no pot is placed on the gas stove, and when the fire of the gas stove is detected and no pot is placed on the gas stove for 2 minutes, the control circuit board 3 controls to close the gas valve, so that the use safety of the gas stove is ensured.

Claims

1. The utility model provides a gas-cooker, includes to inlay combustor (2) of establishing on panel (1) to and set up in control circuit board (3) of panel (1) below, its characterized in that: still include transparency (4) and infrared receiver, the position of going out a fire corresponding to combustor (2) on panel (1) sets up the through-hole, and transparency (4) set up corresponding to the through-hole, infrared receiver sets up the below of transparency (4) and is connected with control circuit board (3) electricity.

2. The gas range of claim 1, wherein: the transparent part (4) is characterized in that an infrared transmitter is further arranged below the transparent part, the infrared transmitter is electrically connected with the control circuit board (3), and the infrared receiver and the infrared transmitter are integrally arranged to form an infrared sensor (5).

3. The gas range of claim 2, wherein: the infrared sensor (5) is fixedly connected to the control circuit board (3).

4. The gas range of claim 2, wherein: still include mounting (6), infrared sensor (5) set up in mounting (6), and be provided with open-ended installation cavity (61) upwards in mounting (6), infrared sensor (5) set up in installation cavity (61).

5. Gas range according to any of claims 2 to 4, characterized in that: and a light-gathering cup (7) is arranged on the periphery of the infrared sensor (5).

6. Gas range according to any of claims 1 to 4, characterized in that: the panel is characterized in that a supporting plate (8) is arranged below the panel (1), and a connecting plate (81) fixedly connected with the panel (1) extends upwards from the supporting plate (8).

7. Gas range according to any of claims 1 to 4, characterized in that: and a display screen (9) electrically connected with the control circuit board (3) is also embedded in the panel (1).