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CN-122015091-A - Fire cover structure and kitchen range using same

CN122015091ACN 122015091 ACN122015091 ACN 122015091ACN-122015091-A

Abstract

The invention relates to a fire cover structure and a stove using the fire cover structure, which comprises an inner ring fire cover with a fire protection hole, a thermocouple arranged beside the inner ring fire cover and opposite to the fire protection hole, and a fire protection block provided with the fire protection hole, wherein an installation gap matched with the fire protection block in size and used for embedding the fire protection block is arranged on the ring wall of the inner ring fire cover, and the fire protection block can move back and forth along the radial direction of the inner ring fire cover relative to the installation gap so as to change the interval between the air outlet end of the fire protection hole and the thermocouple. Compared with the prior art, the temperature of the thermocouple can be changed, the adjustment of the electromotive force of the thermocouple is realized, so that different cooking scenes (different firepower, different pot-sitting state and the like) can be dealt with, the electromotive force of the thermocouple is always kept in a proper range, and the accidental flameout caused by the too low electromotive force or the influence of the too high electromotive force on the service life of the thermocouple is avoided.

Inventors

  • Xia ruili
  • SHI LISHA

Assignees

  • 宁波方太厨具有限公司

Dates

Publication Date
20260512
Application Date
20260108

Claims (10)

  1. 1. The utility model provides a fire lid structure, includes inner ring fire lid (1) and setting up in this inner ring fire lid (1) side and with the thermocouple (3) that the fire hole (20) is relative, its characterized in that still including seted up fire protection piece (2) of fire protection hole (20), and be equipped with on the rampart of inner ring fire lid (1) with this fire protection piece (2) size assorted and supply fire protection piece (2) to inlay dress installation breach (11), and this fire protection piece (2) can for installation breach (11) follow inner ring fire lid (1) radial round trip movement to change the interval between fire protection hole (20) air outlet end and thermocouple (3).
  2. 2. A fire cover structure as claimed in claim 1, wherein said fire protection hole (20) includes at least two fire protection holes (20) having different apertures, and said fire protection block (2) is rotatably installed in said installation notch (11) and is capable of causing the different fire protection holes (20) to oppose the upper ends of said thermocouples (3) by rotation.
  3. 3. A fire cover structure as claimed in claim 2, wherein each of said fire-protecting holes (20) includes a main fire-protecting hole (21) and an auxiliary fire-protecting hole (22) having a smaller diameter than the main fire-protecting hole (21), and the corresponding main fire-protecting hole (21) is opposed to the upper end of the thermocouple (3) and the auxiliary fire-protecting hole (22) is located below the main fire-protecting hole (21) in a state where any one of the fire-protecting holes (20) is opposed to the upper end of the thermocouple (3).
  4. 4. A fire cover structure as claimed in claim 3, wherein the number of auxiliary fire-protecting holes (22) corresponding to each main fire-protecting hole (21) is two, and the auxiliary fire-protecting holes (22) are respectively positioned at two sides of the main fire-protecting holes (21), and the pore canal of each auxiliary fire-protecting hole (22) is inclined from inside to outside towards the corresponding main fire-protecting hole (21) relative to the annular wall of the inner annular fire cover (1).
  5. 5. A fire cover structure as claimed in claim 4, wherein the number of said fire-protecting holes (20) is three, wherein the main fire-protecting holes (21) of each fire-protecting hole (20) are arranged in a regular triangle array, and the auxiliary fire-protecting holes (22) are also arranged in a regular triangle array, and each auxiliary fire-protecting hole (22) is located between two adjacent main fire-protecting holes (21), respectively, and said fire-protecting block (2) is capable of rotating circumferentially about the center line of the array in which each main fire-protecting hole (21) of the fire-protecting hole (20) is arranged.
  6. 6. A fire cover structure as claimed in claim 5, characterized in that the fire protection block (2) is cylindrical in shape and is arranged along the radial direction of the annular wall of the inner annular fire cover (1), each main fire protection hole (21) extends along the axis of the fire protection block (2) and is arranged with the axis of the fire protection block (2) as the center, correspondingly, the installation notch (11) is a circular duct formed on the annular wall of the inner annular fire cover (1), and the fire protection block (2) can rotate relative to the installation notch (11) with the axis thereof as the center and can move back and forth relative to the installation notch (11) along the length direction thereof.
  7. 7. A fire cover structure as claimed in claim 6, characterized in that the outer peripheral surface of the fire protection block (2) is provided with external threads (23), and the wall of the mounting notch (11) is provided with internal threads (111) which can form threaded connection with the external threads (23), and the fire cover structure further comprises a driving mechanism (8) for driving the fire protection block (2) to rotate.
  8. 8. A fire cover structure as claimed in claim 7, wherein the drive mechanism (8) comprises a drive motor (81), a first transmission gear and a second transmission gear meshed with the first transmission gear, wherein an output shaft (811) of the drive motor (81) extends vertically and a horizontally extending mounting rod (82) is fixed to the rear end of the fire protection block (2), the first transmission gear being mounted on the output shaft (811) and the second transmission gear being mounted on the mounting rod (82).
  9. 9. The fire cover structure according to claim 7 or 8, wherein positioning ball groups (24) corresponding to the fire protection holes (20) one by one are arranged on the outer peripheral surface of the fire protection block (2) at intervals along the circumferential direction, telescopic positioning balls (241) are arranged on the positioning ball groups (24) along the axial direction at intervals respectively, the number of the positioning balls (241) in the positioning ball groups (24) is at least equal to the number of the fire protection holes (20) and corresponds to the fire protection holes (20) one by one, positioning grooves (112) for the positioning balls (241) to be clamped in are concavely arranged on the inner peripheral surface of the installation notch (11), In the initial state, one of the positioning balls (241) is clamped in the positioning groove (112), the rest of the positioning balls (241) are propped against the inner peripheral surface of the installation notch (11) to retract, the positioning balls (241) move out of the positioning groove (112) and prop against the inner peripheral surface of the installation notch (11) to retract when the fire protection block (2) moves under the driving of the driving mechanism (8), and the corresponding positioning balls (241) are clamped in the corresponding positioning grooves (112) until the fire protection block (2) moves to the position where the needed main fire protection hole (21) is opposite to the upper end of the thermocouple (3).
  10. 10. A stove characterized in that a fire cover structure as claimed in any one of claims 1 to 9 is applied.

Description

Fire cover structure and kitchen range using same Technical Field The invention relates to the field of stoves, in particular to a fire cover structure and a stove using the fire cover structure. Background The kitchen thermocouple protector is one kitchen safety protector comprising thermocouple and solenoid valve and has gas passage controlled by sensing flame state. The working principle of the electromagnetic valve is that the thermoelectric couple is heated to generate thermoelectric force to drive the electromagnetic valve to maintain a gas passage when flame is ignited, the thermoelectric force disappears after the flame is extinguished, and the electromagnetic valve resets to cut off a gas source. For example, chinese utility model patent No. CN202511067410.2 (publication No. CN120740079 a), chinese utility model patent No. ZL 202421944837.7 (grant notice No. CN 222895158U), and the like. However, the values of thermocouple electromotive forces vary greatly from fire to fire, from pot-sitting state to pot-sitting state, from gas pressure to even from ambient environment. The thermocouple head has low electromotive force, poor anti-interference capability and easy occurrence of accidental flameout, and the thermocouple head has high electromotive force and high temperature and is easy to burn the head, so that the service life of the thermocouple is reduced. In order to solve the above problems, electromotive forces in different states are generally tested in a product design stage, and the electromotive forces are maintained in a relatively suitable range in a typical cooking state through design optimization. In addition, in an actual cooking scene, the factors of the electromotive force influenced are complicated and complicated because the eating cooking habits, regional air source conditions, kitchen air flow environments and the like of different users are greatly different. Under different scenes, the flame state at the fire protection hole is different, and the position of the thermocouple head part in the fire protection flame is also different (for example, the thermocouple head part is sometimes positioned at the inner flame part of the fire protection flame and sometimes positioned at the outer flame part), so that the fluctuation range of the electromotive force is larger. Disclosure of Invention The first technical problem to be solved by the invention is to provide a fire cover structure with adjustable thermocouple electromotive force and good adjusting effect aiming at the prior art. The second technical problem to be solved by the invention is to provide a stove applying the fire cover structure aiming at the prior art. The fire cover structure comprises an inner ring fire cover with a fire protection hole and a thermocouple arranged beside the inner ring fire cover and opposite to the fire protection hole, and is characterized by further comprising a fire protection block provided with the fire protection hole, wherein an installation gap matched with the fire protection block in size and used for embedding the fire protection block is arranged on the annular wall of the inner ring fire cover, and the fire protection block can move back and forth along the radial direction of the inner ring fire cover relative to the installation gap so as to change the interval between the air outlet end of the fire protection hole and the thermocouple. Further, the fire protection hole at least comprises two fire protection holes with different apertures, and the fire protection block is rotatably arranged in the installation notch, and the different fire protection holes can be opposite to the upper end of the thermocouple through rotation. Different fire protection holes are opposite to the upper end of the thermocouple through rotation of the fire protection block, so that the temperature of the thermocouple is changed (the larger the fire protection hole is, the larger the airflow is, the higher the combustion temperature is, and conversely, the smaller the fire protection hole is, the smaller the airflow is, the lower the combustion temperature is, and the like), and the temperature of the thermocouple can be better adjusted according to different cooking scenes by combining with movement of the fire protection block, so that the electromotive force of the thermocouple is better adjusted. Further, each of the fire protection holes includes a main fire protection hole and an auxiliary fire protection hole with a smaller aperture than the main fire protection hole, and in a state that any one fire protection hole is opposite to the upper end of the thermocouple, the corresponding main fire protection hole is opposite to the upper end of the thermocouple, and the auxiliary fire protection hole is located below the main fire protection hole. Through setting up the great main fire protection hole in aperture and making this main fire protection hole and thermocouple's upper end relative to guaran