CN210638077U

CN210638077U - High-heat-efficiency gas stove

Info

Publication number: CN210638077U
Application number: CN201921062854.7U
Authority: CN
Inventors: 吴先锋; 李桂玉
Original assignee: Xi'an Zhitong Meta Information Technology Co ltd
Current assignee: Xi'an Zhitong Meta Information Technology Co ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-05-29
Anticipated expiration: 2029-07-09
Also published as: DE202019105057U1

Abstract

The application provides a high thermal efficiency gas-cooker includes: platform, burner, elevating gear and control system. The control system comprises a controller and an infrared temperature sensor connected with the controller, and the height of the lifting device is adjusted through the height of the flame highest temperature level detected by the infrared temperature sensor, so that the heat transfer area of the cookware is always covered by the flame high-temperature area. The gas stove can detect the position of a flame high-temperature area on the combustion furnace in real time through the infrared temperature sensor, and adjust the height of the combustion furnace through the lifting device, so that the flame high-temperature area can be kept to coincide with the heat transfer position of the cooker, more heat generated by flame can be transferred to the cooker, the loss in the heat radiation process is reduced, and the heat transfer efficiency of the gas stove is improved.

Description

High-heat-efficiency gas stove

Technical Field

The application relates to the technical field of smart homes, in particular to a high-heat-efficiency gas stove.

Background

The traditional gas stove realizes heating a cooker above the combustion device by guiding gas in a municipal gas pipeline or a gas storage tank into the combustion device and burning the gas on the combustion device. The flame size generated by the gas in the combustion process can be adjusted by a flame adjusting knob on the pipeline in the gas stove. Typically, the flame on the combustion device extends from the combustion device to the bottom of the pot to transfer heat to the pot. During cooking, the operator of the gas stove can adjust the flame adjusting knob to change the flame on the combustion device according to different cooking stages and cooking types.

For the flame phenomenon itself, different regions of the flame have different temperatures. For example, a household gas cooker produces a smoother flame without a flame enhancement device, and generally the outer flame region produces a higher temperature than the inner flame region. In the conventional gas stove, the flame is converged and formed into an annular structure through a plurality of gas release pores. Thus, the flame produced by the combustion device possesses different temperature levels at different heights. As the operator adjusts the flame size, the height of the temperature level will also change, for example, when the flame is adjusted down, the height of the flame level at the highest temperature will decrease; when the flame is turned up, the height of the flame level at the highest temperature increases.

To obtain higher thermal efficiency, the gas range can be made to cover the heat transfer area of the bottom of the pot by providing a pot support part of a predetermined height, with the highest temperature flame level. However, when the operator adjusts the flame, the heat transfer area of the pot cannot be covered or cannot be completely covered due to the height change of the flame level with the highest temperature, so that the heat in the flame level with the highest temperature needs to be dissipated to the adjacent area and then transferred to the pot, thereby causing heat loss and reducing the heat transfer efficiency. In addition, for different shapes of cookware, the shapes of heat transfer areas at the bottom of the cookware are different, so that different cookware and flames are different in position, and the heat transfer efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The application provides a high heat efficiency gas-cooker to solve traditional gas-cooker after the adjustment flame size, and the problem that heat transfer efficiency is low when changing the pan.

The application provides a high thermal efficiency gas-cooker includes: platform, burner, elevating gear and control system. Wherein, the platform is provided with a combustion port for providing a combustion space. The combustion device comprises a combustion furnace arranged in the combustion port and a pot supporting frame arranged on the platform. The burning furnace in the burning port can release fuel gas and heat the pan on the pan supporting frame after being ignited. The lifting device is connected with the bottom of the combustion furnace to adjust the height of the combustion furnace. The control system comprises a controller and an infrared temperature sensor connected with the controller, and the height of the lifting device is adjusted through the height of the flame highest temperature level detected by the infrared temperature sensor, so that the heat transfer area of the cookware is always covered by the flame high-temperature area.

In order to realize the functions, the infrared temperature sensor is arranged at the side part of the pot support frame, and the detection area of the infrared temperature sensor covers the upper area of the combustion furnace so as to detect the position of the highest temperature area of the current flame level and send the detected position of the highest temperature area to the controller; the controller is connected with the lifting device to control the lifting device to act according to the detected highest temperature area position, and the height of the combustion furnace is adjusted to enable the highest temperature area to cover the heat transfer position of the cookware.

The application provides a high thermal efficiency gas-cooker can be through the position of infrared temperature sensor real-time detection fire the flame high temperature region on the burning furnace to through the height that elevating gear adjusted burning furnace, make the high temperature region of flame can maintain the heat transfer position coincidence with the pan, thereby make the heat that flame produced can be more send the pan to, reduce the loss of heat radiation in-process, improve the heat transfer efficiency of gas-cooker.

Drawings

Fig. 1 is a schematic structural view of a high thermal efficiency gas range according to the present application;

FIG. 2 is a schematic cross-sectional view of a combustion apparatus according to the present application;

FIG. 3 is a schematic top view of a gas burner according to the present application;

FIG. 4 is a schematic diagram of a control system of the present application;

FIG. 5 is a schematic diagram of a shape sensor based on a lidar according to the present application;

fig. 6 is a schematic diagram of a shape radar structure based on a pulse emitter according to the present application.

Detailed Description

Referring to fig. 1, a schematic structural diagram of a high thermal efficiency gas stove according to the present application is shown. As can be seen from fig. 1, the high thermal efficiency gas range provided by the present application includes: platform 1, burner 2, elevating gear 3 and control system 4. Wherein the platform 1 is used for mounting and fixing other components and separating the working plane of the gas stove from the internal components. In practical application, a smooth platform surface is maintained above the platform 1, and ignition and combustion parts such as a gas pipeline, a burner and the like are arranged below the platform 1. The platform 1 is provided with a combustion port 11 for providing a combustion space of gas. Illustratively, the burner ports 11 may be a circular through-hole structure opened on the platform 1.

The combustion device 2 comprises a combustion furnace 21 and a pot supporting frame 22, wherein the combustion furnace 21 is arranged in the combustion port 11 and used for combusting gas to heat the pot above. In practical application, the combustion furnace 21 is connected with the municipal gas supply pipeline through a gas pipeline so as to lead the gas in the municipal gas supply pipeline into the combustion furnace 21 to participate in combustion. The burner 21 has a porous structure so that the gas in the gas supply line can be introduced into the burner 21 and released in the porous structure of the burner 21. In addition, the combustion device 2 may further include an igniter, which may be a structure such as a discharge needle capable of generating an electric spark, to ignite the gas released from the porous structure by the igniter, thereby forming a stable flame above the combustion furnace 21.

The pot supporting frame 22 is arranged on the platform 1, and the pot can be arranged above the combustion furnace 21 through the supporting function of at least three supporting legs 23. In order to stably set the pot on the pot support frame 22, the pot support frame 22 may include a connection ring and a support leg 23, the connection ring is coaxial with the burner port 11 in practical application, and may be stably placed on the platform 1 through a planar contact portion. The supporting legs 23 are evenly arranged on the connecting ring, and support of the cookware is achieved together. The supporting legs 23 can be of a plate-shaped structure with a trapezoidal inclined edge, and the inclined edge of the supporting legs 23 contacts the bottom surface of the lateral part of the pot to fix the position of the pot. The supporting legs 23 may also be L-shaped rod-like structures, and the top of the L-shaped supporting legs 23 contacts the bottom surface of the pot to support the pot.

As shown in fig. 2, the lifting device 3 is connected to the bottom of the burner 21 to adjust the height of the burner 21. In the technical scheme provided by the application, the lifting device 3 can realize the automatic adjustment of the height of the combustion furnace 21 through a lever principle or thread transmission. In order to obtain a more stable adjustment, in some embodiments of the present application, the height of the burner 21 is adjusted by a screw drive. That is, the lifting device 3 includes a driving motor 31, a transmission mechanism 32, and a lifting cylinder 33. The elevating cylinder 33 is connected to the bottom of the combustion furnace 21, and the outer diameter of the elevating cylinder 33 needs to be smaller than or equal to the outer diameter of the combustion furnace 21 so as not to affect the flow of oxygen in the combustion port 11. The output end of the driving motor 31 is connected with the lifting cylinder 33 through the transmission mechanism 32, and the control end of the driving motor 31 is connected with the controller 41, so that the controller 41 controls the rotation of the driving motor 31 to change the height of the combustion furnace 21.

In practical applications, since the height of the combustion furnace 21 needs to be adjusted up or down under different conditions, the driving motor 31 needs to support the controller 41 to control the forward and reverse rotation thereof and to precisely control the rotation angle thereof, and therefore, in practical applications, the driving motor 31 may be a stepping motor, a servo motor, or the like. The transmission mechanism 32 can change the power output position of the driving motor 31, so as to more reasonably arrange the position of the driving motor 31 in the gas stove, and can adjust the rotating speed output by the driving motor 31, so that the rotating speed finally output to the lifting cylinder 33 meets the preset requirement.

Further, the transmission mechanism 32 is a gear set including a plurality of gears to transmit the rotation output from the driving motor 31 to the lifting drum 33; the lifting cylinder 33 comprises an inner cylinder and an outer cylinder, and the inner cylinder and the outer cylinder are in threaded transmission so as to convert the rotation output by the transmission mechanism 32 into longitudinal movement of the inner cylinder. As shown in fig. 2, the transmission mechanism 32 is a gear set composed of a plurality of gears. The illustrated transmission mechanism 32 can make the output end of the driving motor 31 and the lifting cylinder 33 be in transmission connection through four gears linked with each other, so that when the output end of the driving motor 31 and the lifting cylinder are not on the same line, power transmission can be realized, and the driving motor 31 can be conveniently and fixedly installed. It can be seen that the rotation speed output by the driving motor 31 is firstly adjusted to a set rotation speed value by the transmission mechanism 32, and is transmitted to the outer cylinder to rotate the outer cylinder. And then the rotation of the outer cylinder is converted into the movement of the inner cylinder through the screw transmission, thereby changing the height of the combustion furnace 21.

In this embodiment, the rotation speed of the driving motor 31 can be converted into the movement of the combustion furnace 21 through the screw transmission, and the movement process can realize a more flexible movement mode compared with other transmission modes. In addition, in the actual cooking process, the height difference range of the high-temperature areas corresponding to different flame sizes is small, so that the actual requirement on the speed of height adjustment is small, the moving stability of the combustion furnace 21 is emphasized, and better stability can be obtained by using thread transmission.

As shown in fig. 2 and 4, the control system 4 includes a controller 41 and an infrared temperature sensor 42 connected to the controller 41. Wherein, the infrared temperature sensor 42 is arranged at the side of the pot support frame 22, the detection area of the infrared temperature sensor 42 covers the upper area of the combustion furnace 21 to detect the highest temperature area position of the current flame level and send the detected highest temperature area position to the controller 41; the controller 41 is connected to the lifting device 3 to control the lifting device 3 to operate according to the detected highest temperature region position, and adjust the height of the combustion furnace 21 to make the highest temperature region cover the heat transfer position of the pot.

In practical applications, when different shapes of cooking pots are replaced or the gas supply pressure is applied to different situations, the distance between the heat transfer portion of the pot and the combustion furnace 21 is changed, so that the heat transfer efficiency of the gas stove is different under different conditions. For example, when the gas supply pressure is higher, the flame shape is also larger, and the heat transfer part of the pot is closer to the inner flame area of the flame, in which case the distance between the bottom of the pot and the combustion furnace 21 needs to be increased to obtain better heating effect; when the gas supply pressure is lower, the flame shape is smaller, the heat transfer part of the pot is closer to the outer flame area of the flame, or the heat transfer part can not directly contact the flame, and the distance between the bottom of the pot and the combustion furnace 21 is reduced to obtain a better heating effect.

Therefore, in the technical solution provided by the present application, the infrared temperature sensor 42 may acquire temperature image information in the current cooking state, and send the detected information to the controller 41, so that the controller 41 may determine the position of the high temperature region of the flame through a built-in software program. Specifically, the infrared temperature sensor 42 acquires an infrared image of the flame on the combustion furnace 21, the infrared temperature sensor 42 sends the detected infrared image to the controller 41, and the controller 41 determines the highest temperature point or the position of the area with relatively high temperature in the infrared image by analyzing the specific value of the pixel point in the infrared image. Since the infrared temperature sensor 42 is fixed on the support frame 22, the height of the high temperature region can be determined according to the position of the high temperature region on the image.

The present application can realize non-contact measurement of temperature using the infrared temperature sensor 42, and thus can set the distance between the temperature sensor and the combustion furnace 21 to be relatively long, thereby preventing the heat emitted during flame combustion from affecting the detection of temperature. In practical applications, the flame temperature on the combustion furnace 21 may be detected by other temperature acquisition methods, for example, a strip-shaped temperature sensor composed of a plurality of thermocouples.

In order to obtain better control effect, in some embodiments of the present application, the control system 4 further includes a shape sensor 43 connected to the controller 41, the shape sensor 43 is disposed at a side portion of the pot support frame 22 to detect pot shape data placed above the combustion furnace 21 and transmit the pot shape data to the controller 41. In this embodiment, the shape sensor 43 may be an image collector, an object detector, or the like capable of detecting the shape of the bottom of the pot. Taking an image collector as an example, in practical application, the image of the cookware can be obtained through a camera or a light sensing CCD, and the binaryzation processing is carried out on the cookware image data to obtain a clear cookware edge profile. The pot edge that passes through again confirms the distance between pot and the burning furnace 21. Further, since the infrared temperature sensor 42 may also integrate an image capturing function, in some embodiments of the present application, the image information of the pot may be directly obtained through the infrared temperature sensor 42.

In some embodiments of the present application, as shown in fig. 5, the shape sensor 43 may also be a laser radar, that is, the profile of the pot is determined by the radar scanning principle, but since the laser radar has no penetrating effect, the overall profile of the pot needs to be obtained by a plurality of laser radars, so as to avoid the influence of the inclination of the pot on the shape determination. Correspondingly, be equipped with at least three supporting legs 23 on the pan support frame 22, be equipped with laser radar on two at least in a plurality of supporting legs 23, the detection area that a plurality of laser radar formed covers whole burner port 11.

In this embodiment, if set up two laser radar on pan support frame 22, then two laser radar's scanning width and scanning distance should cover burner port 11 at least to can both detect whole pan. Illustratively, in practical applications, two laser radars are symmetrically arranged with respect to the central axis of the burner port 11 to detect the shape of the pot in two directions. It should be noted that, in order to detect the height of the bottom of the pot through the laser radar, in practical application, the scanning surface of the laser radar can be set to be perpendicular to the platform 1, and the controller only needs to analyze the height of the lowest point of the scanning result, so that the height of the bottom of the pot can be determined. Since the amount of calculation of processing the lidar detection data by the controller 41 is smaller than that of image processing, the present embodiment can significantly improve the detection efficiency of the pot shape.

In another embodiment of the present application, as shown in fig. 6, the shape sensor 43 is a pulse emitter, including an emitter 431 and a receiver 432; the cookware support frame 22 is provided with four supporting legs 23 which are symmetrically arranged relative to the central axis of the burner 11; the emitter 431 and the receiver 432 are respectively arranged on the two supporting legs 23 which are symmetrical to each other, so as to detect the height of the lowest point of the bottom of the pot. In this embodiment, the pulse signals can be relatively emitted through the side surfaces of the two symmetrical supporting legs 23, and the shape of the bottom of the pot can be determined through the detection of the pulse signals. For example, one transmitting band may be provided, on which a plurality of emitters 431 of pulse signals of a specific frequency are vertically arranged side by side, and a receiver 432 is provided on the supporting leg 23 on the other side. If the pulse frequency emitted from top to bottom is gradually increased, the height of the corresponding emitter 431 can be determined in a reverse direction by detecting the most frequent pulse signal by the receiver 432, and then the height of the bottom surface of the cooker can be determined.

In this embodiment, the pulse emitter can search the corresponding emitter 431 height to determine the height interval of the bottom surface of the pot by using the received frequency value, so that the data calculation amount of the controller 41 is smaller in this manner, and the height of the bottom surface of the pot can be detected more easily and quickly. And the manufacturing cost of the pulse emitter is lower, which is beneficial to saving the cost. In addition, because the pulse emits an electromagnetic signal, the electromagnetic signal is not influenced by temperature and brightness, and therefore the method can also avoid the influence of flame on the detection result.

Further, the control system 4 further comprises a height sensor 44 connected to the controller 41, wherein the height sensor 44 is disposed on the lifting device 3 or the combustion furnace 21 to detect the distance between the combustion furnace 21 and the bottom surface of the pot. In this embodiment, the height sensor 44 can detect the height of the combustion furnace 21 in the current state. The height sensor may thus be a sensor device capable of converting the distance into an electrical signal, such as a grating distance sensor, a linear sliding rheostat, or the like. In practice, the height sensor 44 is only required to be disposed on the combustion furnace 21 to determine the distance of the combustion furnace 21 from the set zero position and thus the height of the combustion furnace 21.

The present embodiment can facilitate the controller 41 to control the height of the combustion furnace 21 by detecting the height of the combustion furnace 21. After the height of the high temperature region of the flame is obtained, the height of the combustion furnace 21 can be obtained by the height sensor 44, so as to determine the height difference to be adjusted. And, after determining the height difference, it is also possible to judge whether the adjusted height meets the preset requirement according to the height sensor 44, and stop the height adjustment after meeting the preset requirement. For example, if the height of the flame high temperature region detected by the infrared temperature sensor 42 is 152mm, the height of the pan bottom surface is 170mm, and the height of the current combustion furnace 21 is 136mm, it is determined that the height of the combustion furnace 21 needs to be increased by 170mm and 152mm to 18mm, and therefore, the controller 41 sends an increase instruction to the driving motor 31 to increase the height of the combustion furnace 21. When the height of the burner 21 reaches 136+18 mm, 154mm, the driving motor 31 is controlled to stop rotating.

Since in practical applications, there may be a case where the flame size is changed by manual turning down or turning up by a cooking operator, in this case, as the flame is reduced, the height of the high temperature region of the flame is also reduced, and in the case where the distance between the combustion furnace 21 and the bottom surface of the pot is not changed, the heat transfer efficiency is reduced. Therefore, in order to further improve the heat transfer efficiency of the pot, in some embodiments of the present application, as shown in fig. 3, the gas range further includes an adjusting knob 5 and a gas pipeline 6; the adjusting knob 5 comprises an adjusting valve 51 arranged on the gas pipeline 6 and an angle sensor 52 connected with the adjusting valve 51; the angle sensor 52 is connected to the controller 41 to detect the rotation angle of the regulating valve 51 and transmit the detected rotation angle to the controller 41.

In practical applications, if the operator turns down the flame, the operator rotates clockwise at the adjusting valve 51 by a certain angle, and the angle of rotation can be detected by the angle sensor 52 and sent to the controller 41. The controller 41 can quickly determine the amount of change of the flame by comparing the preset stored template data according to the detected rotation angle data to increase the height of the combustion furnace 21 so that the high temperature region covers the bottom surface of the pot. The embodiment can assist the control of the regulating valve 51 on the flame size through the detection of the angle, so that on the premise of achieving the same heating effect, smaller gas flow is needed.

In some embodiments of the present application, the adjusting knob 5 further includes an adjusting motor 53 connected to the adjusting valve 51; the controller 41 is connected with a regulating motor 53 to regulate the flame size on the combustion furnace 21. In practical application, because abnormal conditions which may occur in practical application, such as the flame on the combustion furnace 21 in a small fire state, fluctuate during the height adjustment process and are easily extinguished, the flame can be temporarily adjusted to be larger by the adjusting motor 53 during the height adjustment process, and the flame can be adjusted to be smaller after the height of the combustion furnace 21 reaches a preset height, so that the influence of the height adjustment process on normal cooking can be avoided. For example, if the flame on the combustion furnace 21 is extinguished, the control valve 51 may be returned to the zero position by the control motor 53, that is, the control valve 51 may be closed to prevent the leakage of the fuel gas.

Further, a flow sensor 61 is further disposed on the gas pipeline 6, and the flow sensor 61 is connected to the controller 41 to detect gas flow data in the gas pipeline 6 and send the gas flow data to the controller 41. In the technical solution provided by the present application, the flow sensor 61 is disposed inside the gas pipeline 6, senses the gas supply pressure, flow and flow velocity in the gas pipeline 6 through a pressure gauge, a flow meter and the like, and sends the detected flow data to the controller 41, and the controller 41 can calculate the flame height on the combustion furnace 21 according to the current flow data. For example, if the gas supply pressure is reduced by 20%, the flame height can be confirmed to be reduced by 20% by pre-calibration, and the height of the combustion furnace 21 can be increased by 20% directly by the lifting device 3 without activating the infrared temperature sensor 42, thereby improving the adjustment efficiency.

It should be noted that the above situation is only used as an example for describing the scheme of the present application, and in practical applications, the influence of the air supply pressure, the air flow and the air flow speed on the flame height also has different variation rules according to different structures of the combustion furnace 21, so that in practical applications, the variation rules can be calibrated through multiple tests to obtain an optimal control scheme.

According to the technical scheme, the high-heat-efficiency gas stove can detect the position of a flame high-temperature area on the combustion furnace 21 in real time through the infrared temperature sensor 42, and adjust the height of the combustion furnace 21 through the lifting device 3, so that the flame high-temperature area can be kept to coincide with the heat transfer position of a pot, heat generated by flame can be more transferred to the pot, loss in the heat radiation process is reduced, and the heat transfer efficiency of the gas stove is improved.

Claims

1. A high heat efficiency gas range, comprising:

the platform (1) is provided with a combustion port (11);

the combustion device (2) comprises a combustion furnace (21) arranged in the combustion port (11) and a pot supporting frame (22) arranged on the platform (1);

the lifting device (3) is connected with the bottom of the combustion furnace (21) to adjust the height of the combustion furnace (21);

the control system (4) comprises a controller (41) and an infrared temperature sensor (42) connected with the controller (41);

wherein the infrared temperature sensor (42) is arranged at the side part of the pot support frame (22), the detection area of the infrared temperature sensor (42) covers the upper area of the combustion furnace (21) to detect the position of the highest temperature area of the current flame layer, and the detected position of the highest temperature area is sent to the controller (41); the controller (41) is connected with the lifting device (3) to control the lifting device (3) to act according to the position of the detected highest temperature area, and the height of the combustion furnace (21) is adjusted to enable the highest temperature area to cover the heat transfer position of the cookware.

2. A highly heat efficient gas range as recited in claim 1, characterized in that the control system (4) further comprises a shape sensor (43) connected to the controller (41), the shape sensor (43) is provided at a side of the pot support frame (22) to detect the pot shape data placed above the burner (21) and transmit the pot shape data to the controller (41).

3. A highly heat efficient gas range as recited in claim 2, characterized in that said shape sensor (43) is a lidar; be equipped with at least three supporting legs (23) on pan support frame (22), be equipped with laser radar on at least two in a plurality of supporting legs (23), the detection area that a plurality of laser radar formed covers whole burner port (11).

4. A highly heat-efficient gas range as claimed in claim 2, wherein the shape sensor (43) is a pulse emitter comprising an emitter electrode (431) and a receiver electrode (432); four supporting legs (23) which are symmetrically arranged relative to the central axis of the burner port (11) are arranged on the pot supporting frame (22); the emitting electrode (431) and the receiving electrode (432) are respectively arranged on two supporting legs (23) which are symmetrical to each other so as to detect the height of the lowest point of the bottom of the pot.

5. A highly heat-efficient gas range as claimed in claim 1, wherein said lifting means (3) comprises a driving motor (31), a transmission mechanism (32) and a lifting cylinder (33); wherein, the lifting cylinder (33) is connected with the bottom of the combustion furnace (21); the output end of the driving motor (31) is connected with the lifting cylinder (33) through the transmission mechanism (32), and the control end of the driving motor (31) is connected with the controller (41) so as to control the rotating speed of the driving motor (31) through the controller (41) and change the height of the combustion furnace (21).

6. A highly heat-efficient gas range as set forth in claim 5, wherein said transmission mechanism (32) is a gear train including a plurality of gears to transmit the rotation outputted from the driving motor (31) to the elevating cylinder (33); the lifting cylinder (33) comprises an inner cylinder and an outer cylinder, and the inner cylinder and the outer cylinder are in threaded transmission so as to convert the rotation output by the transmission mechanism (32) into longitudinal movement of the inner cylinder.

7. A highly heat efficient gas range as recited in claim 1, characterized in that the control system (4) further comprises a height sensor (44) connected to the controller (41), said height sensor (44) is provided on said lifting device (3) or said burner (21) to detect the distance between said burner (21) and the bottom surface of the pot.

8. A highly heat-efficient gas range as claimed in claim 1, characterized in that the gas range further comprises an adjusting knob (5) and a gas line (6); the adjusting knob (5) comprises an adjusting valve (51) arranged on the gas pipeline (6) and an angle sensor (52) connected with the adjusting valve (51); the angle sensor (52) is connected to the controller (41) to detect the rotation angle of the regulating valve (51) and transmit the detected rotation angle to the controller (41).

9. A highly heat-efficient gas range as recited in claim 8, characterized in that said adjusting knob (5) further comprises an adjusting motor (53) connected to said adjusting valve (51); the controller (41) is connected with the adjusting motor (53) and used for adjusting the flame size on the combustion furnace (21).

10. A highly heat-efficient gas range as claimed in claim 8, characterized in that a flow sensor (61) is further arranged on the gas pipeline (6), the flow sensor (61) is connected with the controller (41) to detect the gas flow data in the gas pipeline (6) and send the gas flow data to the controller (41).