Burner and hob

Abstract

The present application relates to the field of kitchen utensils, and discloses a burner and a cooking utensil, the burner comprising: a burner head, a nozzle pipe connected to the burner head, and a temperature sensing probe; the temperature sensing probe is vertically movably inserted into the burner head; the burner further comprises a linkage mechanism and a baffle, the baffle is arranged at an air inlet of the nozzle pipe and is used for shielding the air inlet, and the linkage mechanism is connected to the temperature sensing probe and the baffle respectively, so that the temperature sensing probe drives the baffle to shield the air inlet when moving downward and drives the baffle to open the air inlet when moving upward. The linkage mechanism of the burner drives the baffle to move with the temperature sensing probe, when the utensil is moved away, the baffle at the air inlet opens the air inlet, the flame of the burner assumes an open state, the heating of the temperature sensing probe by high-temperature flue gas is reduced, and the temperature sensing probe is prevented from being overheated by high-temperature flue gas due to the folding of the flame, thereby avoiding misjudgment of the temperature sensing probe.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of kitchen utensils, in particular to a burner and a gas stove. BACKGROUND

[0002] At present, in order to prevent dry burning of gas stoves, a dry burning prevention temperature sensor is generally provided to prevent dry burning from occurring and reduce safety hazards. In the process of cooking food using a burner, the dry burning prevention temperature sensor directly contacts the bottom of a pot. When the temperature of the bottom of the pot reaches a preset dry burning prevention temperature, the dry burning prevention temperature sensor sends a signal to cut off the gas source of the burner and extinguish the burner, thereby preventing the phenomenon of dry burning from occurring.

[0003] In the existing dry burning prevention products, there are some misjudgments of pot overflow. Specifically, when a user moves the pot (such as washing the pot), the inner ring flame converges inward because the bottom of the pot is not pressed against the flame, and the high-temperature flue gas gathers and wraps the temperature sensor, causing the temperature sensor to rapidly rise in temperature and turn off the flame, which causes inconvenience to the user. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defect of inaccurate detection of the dry burning prevention temperature sensor in the prior art burner, and to provide a burner and a gas stove.

[0005] The present application solves the above technical problems by the following technical solutions:

[0006] A burner comprises a burner head, an ejector pipe connected to the burner head, and a temperature sensor;

[0007] The temperature sensor is vertically movably inserted into the burner head;

[0008] The burner further comprises a linkage mechanism and a baffle, the baffle is arranged at an air inlet of the ejector pipe and used for shielding the air inlet, and the linkage mechanism is connected to the temperature sensor and the baffle respectively, so that the temperature sensor drives the baffle to shield the air inlet when moving downward and drives the baffle to open the air inlet when moving upward.

[0009] In the present application, the linkage mechanism of the burner drives the baffle to move with the temperature sensor. When a pot is placed on the burner, the pot is pressed downward, the temperature sensor moves downward, and thus drives the baffle at the air inlet of the ejector pipe to shield the air inlet. When the pot is moved away, the temperature sensor moves upward, and thus drives the baffle at the air inlet of the ejector pipe to open the air inlet. With the increase of the air inlet amount, the flame of the burner presents an open state, which reduces the heating of the temperature sensor by the high-temperature flue gas and avoids the excessive heating of the temperature sensor by the high-temperature flue gas due to the convergence of the flame, thereby avoiding the misjudgment of the temperature sensor and causing the burner to unexpectedly turn off when the dry burning condition is not reached, which causes inconvenience to the user.

[0010] Preferably, the center of the burner head is provided with a vertical center passage, and the temperature sensing probe is vertically movably inserted into the center passage.

[0011] In this scheme, the temperature sensing probe is arranged through the center passage arranged in the center of the burner head.

[0012] Preferably, the linkage mechanism comprises a fixing ring and a connecting part.

[0013] The fixing ring is sleeved on the temperature sensing probe, one end of the connecting part is connected to the fixing ring, and the other end of the connecting part is connected to the baffle.

[0014] In this scheme, the linkage mechanism can better play the linkage role.

[0015] Preferably, the connecting part comprises a vertical rod and an extension rod.

[0016] The vertical rod is partially arranged in the center passage in a vertically extending posture, the top end of the vertical rod is connected to the fixing ring, the bottom end of the vertical rod is exposed from below the center passage and connected to one end of the extension rod, and the other end of the extension rod is connected to the baffle.

[0017] In this scheme, the connecting part realizes the linkage function through fewer parts.

[0018] Preferably, the fixing ring comprises a parallel extension part and a vertical extension part, the vertical extension part is connected to the inner peripheral edge of the parallel extension part, the vertical extension part is sleeved and fixed on the temperature sensing probe, and the top end of the vertical rod is connected to the lower surface of the parallel extension part.

[0019] In this scheme, the fixing ring is provided with a parallel extension part, which facilitates the connection of the vertical rod.

[0020] Preferably, the fixing ring is sleeved on the lower end of the temperature sensing probe.

[0021] In this scheme, the fixing ring is sleeved on the lower end of the temperature sensing probe, which shortens the extension length of the linkage mechanism and avoids interference with the temperature sensing element.

[0022] Preferably, the temperature sensing probe comprises a cylindrical shell, a temperature sensing element arranged at the upper end of the shell, a support rod connected to the lower side of the temperature sensing element, and a spring sleeved on the support rod.

[0023] The burner further comprises a mounting seat arranged in the center passage.

[0024] The temperature sensing probe is installed on the mounting base, the lower end of the shell is sleeved on the upper end of the mounting base, and the supporting rod is vertically movably inserted into the mounting base and abuts against the temperature sensing element and the upper end of the mounting base.

[0025] Preferably, the extension rod is connected to the upper end of the baffle, and the baffle does not block the air inlet or partially blocks the air inlet when the temperature sensing probe is not moved downward.

[0026] In this scheme, the baffle does not block the air inlet or partially blocks the air inlet when the temperature sensing probe is not moved downward, so that the air inlet is conveniently blocked when the baffle is moved downward, so that the air inlet amount is reduced, and the opening degree of the air inlet is increased when the baffle is moved upward, so that the air inlet amount is increased.

[0027] Preferably, the burner further comprises a micro switch arranged below the central passage, and the linkage mechanism further comprises a triggering rod connected to the lower end of the vertical rod and used for pressing the micro switch.

[0028] In this scheme, the micro switch is pressed by the triggering rod, so that the device or equipment for adjusting the fire is controlled by the micro switch when the pot is placed and the temperature sensing probe is moved downward.

[0029] A stove comprising the burner as described above.

[0030] The positive progress effect of the present application is that the linkage mechanism of the burner drives the baffle to move with the temperature sensing probe, when the pot is placed on the burner, the temperature sensing probe is moved downward due to the downward pressure of the pot, so that the baffle at the air inlet of the ejector pipe blocks the air inlet, when the pot is removed, the temperature sensing probe is moved upward, so that the baffle at the air inlet of the ejector pipe opens the air inlet, and as the air inlet amount increases, the flame of the burner presents an open state, the heating of the high-temperature flue gas on the temperature sensing probe is reduced, the excessive heating of the temperature sensing probe caused by the folding of the flame is avoided, and the temperature sensing probe is misjudged, so that the dry burning condition is determined as dry burning, which causes the burner to be unexpectedly extinguished, and the user is inconvenient. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a perspective structural schematic view of a stove according to an embodiment of the present application.

[0032] Figure 2 It is a perspective structural schematic view of a burner according to an embodiment of the present application.

[0033] Figure 3 It is another perspective structural schematic view of a burner according to an embodiment of the present application.

[0034] Figure 4A schematic view of a longitudinal sectional structure of a burner according to an embodiment of the present application.

[0035] Figure 5 A schematic view of an enlarged structure of a part A of Figure 4

[0036] Figure 6 A schematic view of an enlarged structure of a part B of Figure 4

[0037] BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Stove 100

[0039] Burner 110

[0040] Burner head 111

[0041] Central passage 113

[0042] Ejector pipe 120

[0043] Air inlet 121

[0044] Temperature sensing probe 130

[0045] Outer shell 131

[0046] Temperature sensing element 132

[0047] Supporting rod 133

[0048] Spring 134

[0049] Linkage mechanism 140

[0050] Fixed ring 141

[0051] Parallel extension 1411

[0052] Vertical extension 1412

[0053] Vertical rod 1421

[0054] Extension rod 1422

[0055] Baffle 143

[0056] Mounting seat 150

[0057] Touch rod 160

[0058] Micro switch 170 DETAILED DESCRIPTION

[0059] The present application will be further described by way of example with reference to the accompanying drawings wherein:

[0060] As Figure 1 ​​As shown, the present embodiment provides a stove 100. The stove 100 is a gas device for heating a pot using natural gas or coal gas, etc., which includes two burners 110 (only one of which is shown). Alternatively, the stove 100 can also include only one burner 110 or more than three burners 110.

[0061] As shown, the burner 110 includes a burner head 111, an eductor pipe 120 connected to the burner head 111, and a temperature sensing probe 130. Figures 2-6

[0062] The temperature sensing probe 130 is vertically movably inserted into the burner head 111.

[0063] The burner 110 further includes a linkage mechanism 140 and a baffle 143, the baffle 143 being arranged at an air inlet 121 of the eductor pipe 120 and used for shielding the air inlet 121, and the linkage mechanism 140 being connected to the temperature sensing probe 130 and the baffle 143 respectively, so that the temperature sensing probe 130 drives the baffle 143 to shield the air inlet 121 when moving downward and drives the baffle 143 to open the air inlet 121 when moving upward.

[0064] The linkage mechanism 140 of the burner 110 drives the baffle 143 to move with the temperature sensing probe 130, when a pot is placed on the burner 110, due to the downward pressure of the pot, the temperature sensing probe 130 moves downward, thereby driving the baffle 143 at the air inlet 121 of the eductor pipe 120 to shield the air inlet 121, when the pot is removed, the temperature sensing probe 130 moves upward, thereby driving the baffle 143 at the air inlet 121 of the eductor pipe 120 to open the air inlet 121, as the air inlet increases, the flame of the burner 110 presents an open state, reducing the heating of the temperature sensing probe 130 by high-temperature flue gas, avoiding the excessive heating of the temperature sensing probe 130 by high-temperature flue gas due to the folding of the flame, which leads to the temperature sensing probe 130 misjudging, thereby determining dry burning when the dry burning condition is not reached, leading to the unexpected extinguishing of the burner 110, causing inconvenience to the user.

[0065] As shown, the center of the burner head 111 is provided with a vertically penetrating central passage 113, and the temperature sensing probe 130 is vertically movably inserted into the central passage 113. Figure 4

[0066] In the present embodiment, the linkage mechanism 140 includes a fixed ring 141 and a connecting portion, the fixed ring 141 being sleeved on the temperature sensing probe 130, one end of the connecting portion being connected to the fixed ring 141, and the other end of the connecting portion being connected to the baffle 143.

[0067] ​​Alternatively, the linkage mechanism 140 can also adopt other forms, for example, only a connecting portion is provided, one end of the connecting portion is directly fixed to the shell 131 (to be described in detail below) of the temperature sensing probe 130, or other forms of components are adopted instead of the fixing ring 141.

[0068] Preferably, the connecting portion includes a vertical rod 1421 and an extension rod 1422; the vertical rod 1421 is partially arranged in the central passage 113 in a vertically extending posture, the top end of the vertical rod 1421 is connected to the fixing ring 141, the bottom end of the vertical rod 1421 is exposed from below the central passage 113 and connected to one end of the extension rod 1422, the other end of the extension rod 1422 is connected to the baffle 143. The connecting portion realizes the linkage function through fewer components.

[0069] In the present embodiment, the connecting portion is formed in a substantially "L" shape, but the present application is not limited thereto, and the connecting portion can be arranged in other forms as needed to avoid other components on the burner 110. Since there are no components on the burner 110 of the present embodiment that need to be deliberately avoided, the connecting portion can be formed in a substantially "L" shape, and the vertical rod 1421 and the extension rod 1422 of the connecting portion are both linear, but the present application is not limited thereto, and those skilled in the art can redesign the shape of the connecting portion as needed so that it does not interfere with other components in other burners 110.

[0070] The fixing ring 141 includes a parallel extension portion 1411 and a vertical extension portion 1412, the vertical extension portion 1412 is connected to the inner peripheral edge of the parallel extension portion 1411, the vertical extension portion 1412 is sleeved and fixed to the temperature sensing probe 130, and the top end of the vertical rod 1421 is connected to the lower surface of the parallel extension portion 1411. The fixing ring 141 is provided with the parallel extension portion 1411 to facilitate the connection of the vertical rod 1421.

[0071] It should be understood that those skilled in the art can select other forms of components as needed to replace the fixing ring 141 to connect the temperature sensing probe 130 and the connecting portion.

[0072] The fixing ring 141 is sleeved on the lower end of the temperature sensing probe 130. The fixing ring 141 is sleeved on the lower end of the temperature sensing probe 130, which shortens the extension length of the linkage mechanism 140 and also avoids interference with the temperature sensing element 132.

[0073] As Figure 5As shown, the temperature sensing probe 130 comprises a cylindrical outer shell 131, a temperature sensing element 132 arranged at the upper end of the outer shell 131, a support rod 133 connected to the lower end of the temperature sensing element 132, and a spring 134 sleeved on the support rod 133; the burner 110 further comprises a mounting seat 150 arranged in the central passage 113; the temperature sensing probe 130 is mounted on the mounting seat 150, the lower end of the outer shell 131 is sleeved on the upper end of the mounting seat 150 (the mounting seat 150 and the outer shell 131 are not fixed to each other), the support rod 133 is vertically movably inserted into the mounting seat 150, and the spring 134 abuts between the temperature sensing element 132 and the upper end of the mounting seat 150.

[0074] The support rod 133 is a hollow structure, and wires are arranged inside the support rod 133, so as to electrically connect the temperature sensing element 132 and a control element of the burner 110; the control element determines whether the burner 110 is in a dry burning state according to the input of the temperature sensing element 132, so as to control the burner 110 to be extinguished. The wires inside the support rod 133 and the connection with the control element are not shown in the figure.

[0075] The extension rod 1422 is connected to the upper end of the baffle 143, and when the temperature sensing probe 130 does not move downward, the baffle 143 does not block or partially blocks the air inlet 121.

[0076] When the temperature sensing probe 130 does not move downward, the baffle 143 does not block or partially blocks the air inlet 121, so that when the baffle 143 moves downward, the air inlet 121 is conveniently blocked, so that the air inlet amount is reduced, and when the baffle 143 moves upward, the opening degree of the air inlet 121 is increased, and the air inlet amount is increased.

[0077] Alternatively, the extension rod 1422 can also be connected to the lower end of the baffle 143, so that the baffle 143 blocks the air inlet 121 from below.

[0078] As shown, Figure 3 The baffle 143 blocks one side of the air inlet 121. Alternatively, the baffle 143 can also block the other side of the air inlet 121 or the center of the air inlet 121. In the embodiment, the baffle 143 is a square plate. Alternatively, the baffle 143 can also be a special-shaped plate or an adaptive shape according to the opening shape of the air inlet 121. The baffle 143 can be arranged between the damper blade and the ejector pipe 120, or can be arranged on the opposite side of the ejector pipe 120 relative to the damper blade.

[0079] It should be understood that, since the air inlet 121 of the injection pipe 120 is arranged to be maximally shielded by the baffle 143 when the baffle 143 is lowered, the opening degree of the air inlet 121 just meets the requirement of the burner 110 in normal use, and the arrangement of the baffle 143 does not affect the air inlet of the burner 110 in normal use, which can be achieved by increasing the total area of the air inlet 121 or adjusting the rotation angle of the damper blade relative to the air inlet 121.

[0080] When the pot is placed on the burner 110, the temperature sensing element 132 contacts the bottom of the pot, and the entire temperature sensing probe 130 is pressed downward, and specifically, the shell 131 of the temperature sensing probe 130 is lowered, the spring 134 is compressed, the shell 131 is lowered to drive the fixed ring 141 to be lowered, thereby driving the connecting portion to be lowered as a whole, and the connecting portion drives the baffle 143 to be lowered, thereby shielding the air inlet 121. When the pot is removed from the burner 110, the temperature sensing probe 130 is raised as a whole under the action of the spring 134, the shell 131 is raised to drive the fixed ring 141 to be raised, thereby driving the connecting portion to be raised as a whole, and the connecting portion drives the baffle 143 to be raised, thereby opening the air inlet 121 and increasing the air inlet. With the increase of the air inlet, the flame of the burner 110 presents an open state, reducing the heating of the high-temperature flue gas on the temperature sensing probe 130, avoiding the excessive heating of the temperature sensing probe 130 due to the folding of the flame, and avoiding the misjudgment of the temperature sensing probe 130, so that the dry burning condition is reached, and the burner 110 is unexpectedly extinguished, causing inconvenience to the user.

[0081] In the prior art, the temperature sensing probe 130 is generally arranged in the central passage 113 at the center of the burner head 111, and therefore, the linkage mechanism 140 is also arranged in the central passage 113 according to the arrangement of the temperature sensing probe 130. However, alternatively, when the temperature sensing probe 130 is not arranged at the center of the burner head 111, the person skilled in the art can also select the arrangement form of the linkage mechanism 140 according to the need to adapt to the arrangement form of the temperature sensing probe 130.

[0082] As shown in Figure 6 The burner 110 further comprises a micro switch 170 arranged below the central passage 113, and the linkage mechanism 140 further comprises a touch rod 160 connected to the lower end of the vertical rod 1421 and used to press the micro switch 170.

[0083] By arranging the touch rod 160 to press the micro switch 170, the device or equipment for adjusting the flame can be controlled by the micro switch 170 when the pot is placed and the temperature sensing probe 130 is lowered.

[0084] The device or apparatus for adjusting the fire here can be an adjusting valve between the cock valve and the burner 110 in the stove 100, etc.

[0085] In order to verify the effect of the present application, the inventor conducted an experiment, as shown in the following table:

[0086]

[0087]

[0088]

[0089] In summary, when the inlet opening 121 of the ejector pipe 120 is large (see the air door is opened to the maximum), the air inlet amount is large, the flame shape is expanded and short, the temperature probe 130 located in the center of the furnace head 111 is slow to rise, and it is not easy to cause dry burning misjudgment. When the inlet opening 121 of the ejector pipe 120 is small (see the air door is closed small), the air inlet amount is reduced, the flame is relatively contracted and long, the temperature probe 130 located in the center of the furnace head 111 is fast to rise, and it is easy to cause dry burning misjudgment.

[0090] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship of the device or element in the normal use, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation at any time, and therefore cannot be understood as a limitation on the present application in this respect.

[0091] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications all fall within the protection scope of the present application.

Claims

1. A burner, characterized by It comprises: a burner head, an ejector pipe connected to the burner head, and a temperature sensing probe; the temperature sensing probe is vertically movably inserted into the burner head; the burner further comprises a linkage mechanism and a baffle, the baffle is arranged at an air inlet of the ejector pipe and used to shield the air inlet, the linkage mechanism is connected to the temperature sensing probe and the baffle respectively, so that the temperature sensing probe drives the baffle to shield the air inlet when moving downward and drives the baffle to open the air inlet when moving upward.

2. The burner of claim 1, wherein a central passage vertically penetrating through the center of the burner head, the temperature sensing probe is vertically movably inserted into the central passage.

3. The burner of claim 2, wherein the linkage mechanism comprises a fixing ring and a connecting part; the fixing ring is sleeved on the temperature sensing probe, one end of the connecting part is connected to the fixing ring, and the other end of the connecting part is connected to the baffle.

4. The burner of claim 3, wherein the connecting part comprises a vertical rod and an extension rod; the vertical rod is partially arranged in the central passage in a vertically extending posture, the top end of the vertical rod is connected to the fixing ring, the bottom end of the vertical rod is exposed from below the central passage and connected to one end of the extension rod, and the other end of the extension rod is connected to the baffle.

5. The burner of claim 4, wherein the fixing ring comprises a parallel extension part and a vertical extension part, the vertical extension part is connected to the inner peripheral edge of the parallel extension part, the vertical extension part is sleeved and fixed on the temperature sensing probe, and the top end of the vertical rod is connected to the lower surface of the parallel extension part.

6. The burner of claim 3, wherein the fixing ring is sleeved on the lower end of the temperature sensing probe.

7. The burner of claim 6, wherein the temperature sensing probe comprises a cylindrical shell, a temperature sensing element arranged at the upper end of the shell, a support rod connected to the lower side of the temperature sensing element, and a spring sleeved on the support rod; the burner further comprises a mounting seat arranged in the central passage; the temperature sensing probe is mounted on the mounting seat, the lower end of the shell is sleeved on the upper end of the mounting seat, the support rod is vertically movably inserted into the mounting seat, and the spring abuts between the temperature sensing element and the upper end of the mounting seat.

8. The burner of claim 4, wherein the extension rod is connected to the upper end of the baffle, when the temperature sensing probe does not move downward, the baffle does not shield the air inlet or partially shields the air inlet.

9. The burner of claim 4, wherein the burner further comprises a micro switch arranged below the central passage, and the linkage mechanism further comprises a touch rod connected to the lower end of the vertical rod and used to press the micro switch.

10. A hob, characterized in that It comprises the burner as claimed in any one of claims 1-9.

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