Dryer protection device group

Abstract

The utility model discloses a kind of anti dry-burning protection device groups for controlling heating device, it includes: float mechanism and magnetic induction controller. Float mechanism is used to detect liquid level, float mechanism is provided with the magnetic drive portion that position changes with liquid level height, and the magnetic drive portion is magnet. Magnetic induction controller is used to connect with heating device, and is used to control the opening and closing of heating device, and magnetic induction controller can be triggered by magnetic drive portion to change the state controlled by it. Among them, when the liquid level detected by float mechanism changes to below predetermined position, the magnetic drive portion changes position and triggers magnetic induction controller to enter the state of closing heating device. The above-mentioned anti dry-burning protection device group uses float mechanism to cooperate with magnetic trigger controller to realize anti dry-burning protection, and good reliability, installation setting is flexible.

Description

Technical Field

[0001] This utility model relates to safety protection devices, and in particular to a dry-burn protection device assembly. Background Technology

[0002] Existing devices for heating liquids typically incorporate anti-dry-burning protection mechanisms to prevent dry burning. These devices generally employ liquid sensors, which are inserted into the liquid for detection. The liquid sensor is electrically connected to the heating element via a control circuit. When the liquid sensor detects that the liquid level is below a predetermined depth, it generates a control signal. The control circuit then uses this signal to stop the heating element, thus preventing dry burning. However, this structure is susceptible to the effects of liquid on the sensor's detection end (e.g., scale buildup), which can cause it to lose sensitivity or even malfunction, leading to detection failure. Furthermore, because liquid sensors need to output electrical signals, external wiring is required. During installation, the wiring must be carefully planned to ensure waterproofing, limiting installation flexibility. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an anti-dry-burning protection device assembly, which uses a float mechanism in conjunction with a magnetic trigger controller to achieve anti-dry-burning protection, with good reliability and flexible installation.

[0004] According to an embodiment of the present invention, an anti-dry-burning protection device assembly is used to control a heating device, comprising: a float mechanism for detecting liquid level, the float mechanism being provided with a magnetic drive part whose position changes with the liquid level, the magnetic drive part being a magnet; and a magnetic induction controller for connecting to the heating device and for controlling the opening and closing of the heating device, the magnetic induction controller being triggered by the magnetic drive part to change its controlled state; wherein, when the detected liquid level changes to below a predetermined position, the magnetic drive part changes position and triggers the magnetic induction controller to enter a state of closing the heating device.

[0005] The anti-dry-burning protection device assembly according to the embodiments of this utility model has at least the following beneficial effects: When using the above-mentioned anti-dry-burning protection device assembly, the float mechanism is set to the position where the liquid level needs to be detected, the magnetic induction controller is set to the corresponding position, and the magnetic induction controller is connected to the heating device. When the float mechanism detects that the liquid level is lower than the predetermined position, the magnetic drive unit changes position and triggers the magnetic induction controller through the magnetic field, causing the heating device to shut down, thereby realizing dry-burning protection. The above-mentioned anti-dry-burning protection device assembly uses a float mechanism combined with a magnetic trigger structure to realize anti-dry-burning protection. The float mechanism is a mechanical structure, which is not easily affected by scale and has good reliability. Since the magnetic trigger structure is a non-contact structure, the float mechanism that directly detects the water level and the magnetic induction controller that controls the heating device can be set separately. The purely mechanical float mechanism does not need to consider wiring issues, and the magnetic induction controller can also be unaffected by liquid because it can be set separately, thus providing good flexibility in installation and setting.

[0006] According to some embodiments of the present invention, the float mechanism includes a float mounting frame, a float ball, a swing rod, and a connecting rod. One end of the swing rod is hinged to the float mounting frame, the float ball is disposed at the other end of the swing rod, one end of the connecting rod is fixed to the swing rod, and the magnetic drive part is disposed at the other end of the connecting rod.

[0007] According to some embodiments of the present invention, the linkage rod is connected to a mounting cover, the periphery of the mounting cover is fixed to the linkage rod, and the mounting cover covers and fixes the magnetic drive part to the linkage rod and together with the linkage rod, closes the magnetic drive part.

[0008] According to some embodiments of the present invention, the linkage rod is provided with a top pressing boss, the mounting cover covers the top pressing boss, the top pressing boss abuts against the magnetic drive part, and a sealing ring is sleeved on the outer periphery of the top pressing boss. The sealing ring is located inside the mounting cover and abuts against the linkage rod, the mounting cover, and the magnetic drive part.

[0009] According to some embodiments of this utility model, the heating device is a burner that obtains gas through a gas valve, and the magnetic induction controller is a valve for controlling the opening and closing of a channel. The magnetic induction controller is connected to the gas channel connected to the gas valve and closes the gas valve by cutting off the gas channel.

[0010] According to some embodiments of this utility model, the gas valve is equipped with a flameout protection solenoid valve and a pilot flame gas output terminal. The gas valve is connected to a pilot flame assembly, which includes a pilot flame burner and a thermocouple. The pilot flame burner is connected to the pilot flame gas output terminal through a pilot flame gas pipeline. The thermocouple is used to detect the flame of the pilot flame burner and is electrically connected to the flameout protection solenoid valve. A magnetic induction controller is connected to the pilot flame gas pipeline and is used to control the on / off state of the pilot flame gas pipeline. The magnetic induction controller is a normally open valve. When the detected liquid level changes to a position lower than a predetermined position, the float mechanism changes position and triggers the magnetic induction controller to enter a state of cutting off the pilot flame gas pipeline.

[0011] According to some embodiments of this utility model, the magnetic induction controller includes a valve body and a valve core. The valve body is provided with an air inlet channel, an air outlet channel, and a valve cavity. The valve core is disposed in the valve cavity and has an open valve position and a closed valve position. In the open valve position, the air inlet channel and the air outlet channel are interconnected. In the closed valve position, the valve core disconnects the connection between the air inlet channel and the air outlet channel. The valve core is provided with a magnetic linkage part, which is used to drive the valve core to switch positions. The magnetic linkage part and the magnetic drive part are interconnected and cooperate with each other through a magnetic field. When the magnetic drive part changes position, it drives the magnetic linkage part to change position through the magnetic field, thereby driving the valve core to switch positions.

[0012] According to some embodiments of this utility model, the air inlet channel and the air outlet channel are interconnected through the valve cavity. The valve cavity wall is provided with a communication port for enabling the air inlet channel and the air outlet channel to communicate. The valve core is provided with a sealing plug, which is used to open and close the communication port respectively when the valve core changes the valve open position and the valve close position. The valve core includes a spindle component, which includes a mounting plate and a connecting shaft. One end of the connecting shaft is connected to the center of the mounting plate. The magnetic linkage part is fixed to the mounting plate. The sealing plug is disposed on the connecting shaft. The valve cavity wall has a communication hole. The communication port is the opening of the communication hole. The sealing plug is disposed opposite to the communication port. A connecting hole is provided at the bottom of the communication hole. The mounting plate slides in cooperation with the valve cavity along the axial direction of the connecting shaft. The other end of the connecting shaft slides in cooperation with the connecting hole along the axial direction of the connecting shaft.

[0013] According to some embodiments of the present invention, the valve body includes a main seat and a cover. The air inlet channel, the air outlet channel, and the connecting hole are disposed on the main seat. The main seat has a cavity groove. The connecting hole is opened at the bottom of the cavity groove. The cover is installed on the main seat and covers the opening of the cavity groove. The cover and the cavity groove together form the valve cavity.

[0014] According to some embodiments of the present invention, the main body is provided with a plug-in boss around the opening of the cavity groove, and the cover is provided with a mating groove adapted to the plug-in boss. The cover is plugged into the plug-in boss through the mating groove. A sealing ring is provided between the cover and the main body. The sealing ring abuts against the cover around the opening of the mating groove and the main body around the plug-in boss.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A;

[0019] Figure 3 This is a schematic diagram of the structure of the present invention where the detected liquid level is lower than a predetermined value and the magnetic induction controller is in the state of controlling the heating device to be turned off.

[0020] Figure 4 for Figure 3 Enlarged view of point B;

[0021] Figure 5 This is a schematic diagram of the float mechanism in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the burner used in an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure for controlling the burner to shut down according to an embodiment of the present invention.

[0024] Figure label:

[0025] Heating device 1;

[0026] Float mechanism 100, magnetic drive unit 110, float mounting bracket 120, float ball 130, swing rod 140, connecting rod 150, mounting cover 160, rod body 141, first nut 142, second nut 143, top pressing boss 151, U-shaped head 152, hinge shaft 153, end plate 1521, connecting plate 1522;

[0027] Magnetic induction controller 200, valve body 210, valve core 220, magnetic linkage part 230, reset elastic element 240, air inlet channel 211, air outlet channel 212, valve cavity 213, connecting port 214, connecting hole 215, connecting hole 216, main seat 217, cover 218, sealing plug 221, spindle 222, balancing elastic element 223, support plate 224, mounting plate 2221, connecting shaft 2222, insertion boss 2171, mating groove 2181;

[0028] Gas valve 300, flameout protection solenoid valve 310, permanent flame gas output terminal 320, gas input terminal 330, main gas output terminal 340;

[0029] The pilot flame assembly 400, the pilot flame burner 410, and the thermocouple 420 are included. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Reference Figures 1 to 7 A dry-burning protection device assembly for controlling a heating device 1 includes a float mechanism 100 and a magnetic induction controller 200. The float mechanism 100 detects the liquid level and is equipped with a magnetic drive unit 110, which is a magnet, and its position changes with the liquid level. The magnetic induction controller 200 is connected to the heating device 1 and controls the opening and closing of the heating device 1. The magnetic induction controller 200 can be triggered by the magnetic drive unit 110 to change its controlled state. Specifically, when the detected liquid level changes below a predetermined position, the magnetic drive unit 110 changes position and triggers the magnetic induction controller 200 to enter a state where the heating device 1 is turned off.

[0035] When using the aforementioned anti-dry-burning protection device assembly, the float mechanism 100 is set to the position where the liquid level needs to be detected, the magnetic induction controller 200 is set to the corresponding position, and the magnetic induction controller 200 is connected to the heating device 1. When the float mechanism 100 detects that the liquid level is lower than the predetermined position, the magnetic drive unit 110 changes position and triggers the magnetic induction controller 200 through the magnetic field, causing the heating device 1 to shut down, thereby achieving dry-burning protection. The aforementioned anti-dry-burning protection device assembly uses a float mechanism 100 in conjunction with a magnetic trigger structure to achieve anti-dry-burning protection. The float mechanism 100 is a mechanical structure, not easily affected by scale, and has good reliability. Since the magnetic trigger structure is a non-contact structure, the float mechanism 100, which directly detects the water level, and the magnetic induction controller 200, which controls the heating device 1, can be set up separately. The purely mechanical float mechanism 100 does not require consideration of wiring issues, and the magnetic induction controller 200, because it can be set up separately, is also unaffected by liquid, thus providing good flexibility in installation and setup.

[0036] In this embodiment, the float mechanism 100 includes a float mounting frame 120, a float 130, a swing rod 140, and a connecting rod 150. One end of the swing rod 140 is hinged to the float mounting frame 120, the float 130 is disposed at the other end of the swing rod 140, one end of the connecting rod 150 is fixed to the swing rod 140, and a magnetic drive unit 110 is disposed at the other end of the connecting rod 150. The float mechanism 100 can be mounted to a liquid container via the float mounting frame 120, and the float 130 can be immersed in the liquid to be detected. When the liquid level drops, the float 130 can drop accordingly, causing the swing rod 140 to swing. Simultaneously, the connecting rod 150 swings, causing the magnetic drive unit 110 to change position, thereby triggering the magnetic induction controller 200. The above-described float mechanism 100 has a simple structure and is easy to implement.

[0037] In this embodiment, the linkage 150 is connected to a mounting cover 160. The periphery of the mounting cover 160 is fixed to the linkage 150. The mounting cover 160 covers and fixes the magnetic drive unit 110 to the linkage 150, and together with the linkage 150, seals the magnetic drive unit 110. With this structure, the magnetic drive unit 110 is securely fixed, and the sealed structure provides good protection for the magnetic drive unit 110, preventing liquid corrosion. In this embodiment, the linkage 150 and the mounting cover 160 can be fixed with screws, or by riveting, welding, snap-fitting, etc.

[0038] In this embodiment, the linkage 150 is provided with a pressing boss 151, and the mounting cover 160 covers the pressing boss 151. The pressing boss 151 abuts against the magnetic drive part 110, and a sealing ring is sleeved on the outer periphery of the pressing boss 151. The sealing ring is located inside the mounting cover 160 and abuts against the linkage 150, the mounting cover 160, and the magnetic drive part 110. With the above structure, the installation of the magnetic drive part 110 is more stable, and the sealing performance is better.

[0039] In this embodiment, the linkage 150 is a sheet metal body. One end of the linkage 150 is bent 180 degrees to form a U-shaped head 152. The U-shaped head 152 includes opposing end plates 1521 and connecting plates 1522. The swing rod 140 includes a rod body 141 and a first nut 142 and a second nut 143 disposed on the rod body 141. The rod body 141 is provided with a stud section, which passes through the connecting plate 1522 of the U-shaped head 152. The first nut 142 and the second nut 143 are threaded to the stud section and are respectively disposed on both sides of the connecting plate 1522 of the U-shaped head 152, clamping and fixing the connecting plate 1522 of the U-shaped head 152. The second nut 143 is disposed on the side of the connecting plate 1522 near the end plate 1521. The end plate 1521 has an opening that matches the outer contour shape of the second nut 143. The second nut 143 passes through the opening of the end plate 1521. The opening is non-circular. With the above structure, the connecting rod 150 and the swing rod 140 are positioned and fixed along both the axial and circumferential directions of the swing rod 140, achieving a simple and easy-to-manufacture structure. In the embodiment, the second nut 143 is radially provided with a hinge shaft 153, which is hinged to the float mounting frame 120, thereby allowing the swing rod 140 to swing.

[0040] In this embodiment, the heating device 1 is a burner that obtains gas through a gas valve 300. The magnetic induction controller 200 is a valve used to control the opening and closing of a gas channel. The magnetic induction controller 200 is connected to the gas channel connected to the gas valve 300, and closes the gas valve 300 by cutting off the gas channel. With the above structure, the magnetic induction controller 200, specifically a valve, can control the heating device 1 by controlling the opening and closing of the gas channel. The structure is simple, and for some purely mechanical gas appliances, modification is simple and cost-effective.

[0041] It is conceivable that the heating device 1 can also be an electric heater, and the magnetic induction controller 200 can also be a structure used to control the on and off of the circuit, such as a reed switch, etc. The specific configuration can be made according to the actual situation.

[0042] In this embodiment, the gas valve 300 is equipped with a flameout protection solenoid valve 310 and a pilot flame gas output terminal 320. The gas valve 300 is connected to a pilot flame assembly 400, which includes a pilot flame burner 410 and a thermocouple 420. The pilot flame burner 410 is connected to the pilot flame gas output terminal 320 through a pilot flame gas pipeline. The thermocouple 420 is used to detect the flame of the pilot flame burner 410 and is electrically connected to the flameout protection solenoid valve 310. The magnetic induction controller 200 is connected to the pilot flame gas pipeline and is used to control the on / off state of the pilot flame gas pipeline. The magnetic induction controller 200 is a normally open valve. When the detected liquid level changes to a position lower than a predetermined position, the magnetic drive unit 110 of the float mechanism 100 changes position and triggers the magnetic induction controller 200 to enter the state of cutting off the pilot flame gas pipeline. In this embodiment, the gas valve 300 can be connected to a gas source through its gas input terminal 330 and supply gas to the heating device 1 through its main gas output terminal 340.

[0043] When the gas supply to the pilot flame burner 410 is cut off, the flame goes out, the thermocouple 420 loses voltage, the flameout protection solenoid valve 310 is de-energized, and the gas valve 300 closes, cutting off the gas supply to the heating device 1. This structure cleverly controls the pilot flame gas and utilizes the flameout protection solenoid valve 310 to cut off the gas supply. It fully utilizes the structure of the gas valve 300 itself to achieve gas control, is simple in design, and is easy to retrofit existing gas appliances. Furthermore, since the magnetic induction controller 200 controls a relatively small flow of pilot flame gas, a large size is not required.

[0044] It is conceivable that, in some embodiments, the anti-dry-burning protection device group is not limited to controlling the gas valve 300 by controlling the gas in the pilot flame. For example, it can also be directly controlled by controlling the opening and closing of the main input or main output gas passage of the gas valve 300.

[0045] In this embodiment, the magnetic induction controller 200 includes a valve body 210 and a valve core 220. The valve body 210 is provided with an air inlet channel 211, an air outlet channel 212, and a valve cavity 213. The valve core 220 is disposed in the valve cavity 213 and has an open valve position and a closed valve position. In the open valve position, the air inlet channel 211 and the air outlet channel 212 are interconnected. In the closed valve position, the valve core 220 disconnects the connection between the air inlet channel 211 and the air outlet channel 212. The valve core 220 is provided with a magnetic linkage part 230, which is used to drive the valve core 220 to switch positions. The magnetic linkage part 230 and the magnetic drive part 110 are interconnected through a magnetic field. When the magnetic drive part 110 changes position, it drives the magnetic linkage part 230 to change position through the magnetic field, thereby driving the valve core 220 to switch positions. The above structure realizes the on / off control of the magnetic induction controller 200, which is simple in structure.

[0046] In this embodiment, the intake passage 211 and the outlet passage 212 are interconnected via a valve chamber 213. The wall of the valve chamber 213 is provided with a communication port 214 for enabling the intake passage 211 and the outlet passage 212 to communicate. The valve core 220 is provided with a sealing plug 221, which is used to open and close the communication port 214 respectively when the valve core 220 changes its open and closed positions. The valve core 220 includes a spindle 222, which includes a mounting plate 2221 and a connecting shaft 2222. One end of the connecting shaft 2222 is connected to the mounting plate 2221. The mounting plate 2221 is centrally connected, and the magnetic linkage part 230 is fixed to the mounting plate 2221. A sealing plug 221 is disposed on the connecting shaft 2222. A connecting hole 215 is provided in the cavity wall of the valve chamber 213, and a connecting opening 214 is the orifice of the connecting hole 215. The sealing plug 221 is positioned opposite to the connecting opening 214. A connecting hole 216 is provided at the bottom of the connecting hole 215. The mounting plate 2221 slides along the axial direction of the connecting shaft 2222 and is in sliding engagement with the valve chamber 213. The other end of the connecting shaft 2222 slides along the axial direction of the connecting shaft 2222 and is in sliding engagement with the connecting hole 216. With this structure, the valve core 220 operates stably, and the overall structure for opening and closing channels is simple, easy to manufacture, and easy to maintain.

[0047] In one embodiment, the connecting hole 215 is the portion that directly connects the intake channel 211 and the valve chamber 213, while the exhaust channel 212 directly connects to the valve chamber 213. The opening of the connecting hole 215, i.e., the connecting port 214, can control the connection and disconnection between the intake channel 211 and the valve chamber 213, thereby controlling the connection and disconnection between the intake channel 211 and the exhaust channel 212. In other embodiments, the connecting port 214 can also be in other locations, such as a connecting port that connects the exhaust channel 212 and the valve chamber 213.

[0048] In this embodiment, a reset elastic element 240 is provided between the valve core 220 and the valve body 210. The valve core 220 tends to remain in the open position through the reset elastic element 240, thereby making the magnetic induction controller 200 a normally open valve. The reset elastic element 240 can be a spring or other elastic structure.

[0049] In this embodiment, while the magnetic induction controller 200 is a normally open valve, the magnetic drive unit 110 drives the magnetic linkage unit 230 to operate through repulsive force, thus driving the valve core 220 to the closed position. When the magnetic drive unit 110 moves away from the magnetic linkage unit 230, the valve core 220 is reset to the open position by the reset elastic member 240. It is conceivable that the magnetic drive unit 110 and the magnetic linkage unit 230 are not limited to using repulsive force for linkage; for example, they can also be linked through attractive force. When the magnetic drive unit 110 and the magnetic linkage unit 230 are linked through repulsive force, they are magnets with the same polarity on opposite sides; when the magnetic drive unit 110 and the magnetic linkage unit 230 are linked through attractive force, the magnetic linkage unit 230 can be made of a metal that can be attracted by a magnet, such as iron, cobalt, nickel, and their alloys.

[0050] In this embodiment, the sealing plug 221 is elastic and sleeved around the outer periphery of the mandrel 222. A cylindrical balancing elastic element 223 is disposed between the mandrel 222 and the sealing plug 221. The balancing elastic element 223 is sleeved around the mandrel 222 and is used to apply elastic force to the sealing plug 221. With the above structure, when the sealing plug 221 presses against and seals the connection port 214, the posture of the sealing plug 221 can be automatically adjusted by the balancing elastic element 223, so that it seals the connection port 214 more stably and accurately.

[0051] In this embodiment, a support plate 224 is provided on one side of the sealing plug 221. The support plate 224 is sleeved on the mandrel 222, and the support plate 224 and the sealing plug 221 are in contact. A balancing elastic member 223 is provided between the support plate 224 and the mandrel 222. A central groove is provided on one side of the support plate 224 and a central boss is formed on the other side. A protrusion adapted to the central groove is provided on the side of the sealing plug 221 near the support plate 224 and is inserted into the central groove. One end of the balancing elastic member 223 is sleeved on the central boss and the other end abuts against the mandrel 222. With the above structure, the support plate 224 can fit against the elastic sealing plug 221, and the balancing elastic element 223 abuts against the support plate 224. The support plate 224 can provide support for the sealing plug 221 and the balancing elastic element 223, thereby enabling them to cooperate better. Furthermore, the protruding platform and the central recessed groove make the cooperation between the balancing elastic element 223, the support plate 224, and the sealing plug 221 more stable. In this embodiment, the balancing elastic element 223 can be a spring or other elastic structure.

[0052] In this embodiment, the valve body 210 includes a main seat 217 and a cover 218. An air inlet channel 211, an air outlet channel 212, and a connecting hole 215 are disposed on the main seat 217. The main seat 217 has a cavity groove, and the connecting hole 215 is located at the bottom of the cavity groove. The cover 218 is installed on the main seat 217 and covers the opening of the cavity groove. The cover 218 and the cavity groove together form a valve cavity 213. With the above structure, during assembly, the valve core 220 can be directly inserted into the main seat 217 through the opening of the cavity groove, and then the cover 218 is installed to complete the assembly, which is convenient.

[0053] In this embodiment, the main body 217 has insertion bosses 2171 around the opening of the cavity groove, and the cover 218 has mating grooves 2181 adapted to the insertion bosses 2171. The cover 218 is inserted and mated with the insertion bosses 2171 through the mating grooves 2181. A sealing ring is provided between the cover 218 and the main body 217, and the sealing ring abuts against the periphery of the opening of the mating grooves 2181 on the cover 218 and the periphery of the insertion bosses 2171 on the main body 217. With the above structure, a stable seal can be formed between the cover 218 and the main body 217, and the fit between them is firm, ensuring accurate installation and positioning.

[0054] In the embodiments, the cover 218 and the main body 217 can be fixed by screws, or by riveting, welding, snap-fitting, etc.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A dry-burn protection device assembly for controlling a heating device (1), characterized in that, include: A float mechanism (100) is used to detect the liquid level. The float mechanism (100) is provided with a magnetic drive part (110) whose position changes with the liquid level. The magnetic drive part (110) is a magnet. A magnetic induction controller (200) is used to connect to the heating device (1) and to control the opening and closing of the heating device (1). The magnetic induction controller (200) can be triggered by the magnetic drive unit (110) to change its control state. When the detected liquid level changes to a position below a predetermined position, the magnetic drive unit (110) of the float mechanism (100) changes position and triggers the magnetic induction controller (200) to enter the state of shutting down the heating device (1).

2. The anti-dry-burning protection device assembly according to claim 1, characterized in that: The float mechanism (100) includes a float mounting frame (120), a float (130), a swing rod (140), and a connecting rod (150). One end of the swing rod (140) is hinged to the float mounting frame (120), the float (130) is disposed at the other end of the swing rod (140), one end of the connecting rod (150) is fixed to the swing rod (140), and the magnetic drive unit (110) is disposed at the other end of the connecting rod (150).

3. The anti-dry-burning protection device assembly according to claim 2, characterized in that: The linkage rod (150) is connected to a mounting cover (160). The periphery of the mounting cover (160) is fixed to the linkage rod (150). The mounting cover (160) covers and fixes the magnetic drive part (110) to the linkage rod (150) and together with the linkage rod (150) closes the magnetic drive part (110).

4. The anti-dry-burning protection device assembly according to claim 3, characterized in that: The linkage rod (150) is provided with a top pressing boss (151), and the mounting cover (160) covers the top pressing boss (151). The top pressing boss (151) abuts against the magnetic drive part (110). A sealing ring is sleeved on the outer periphery of the top pressing boss (151). The sealing ring is located inside the mounting cover (160) and abuts against the linkage rod (150), the mounting cover (160), and the magnetic drive part (110).

5. The anti-dry-burning protection device assembly according to claim 1, characterized in that: The heating device (1) is a burner that obtains gas through a gas valve (300). The magnetic induction controller (200) is a valve used to control the opening and closing of the channel. The magnetic induction controller (200) is connected to the gas channel connected to the gas valve (300) and closes the gas valve (300) by cutting off the gas channel.

6. The anti-dry-burning protection device assembly according to claim 5, characterized in that: The gas valve (300) is equipped with a flameout protection solenoid valve (310) and a pilot flame gas output terminal (320). The gas valve (300) is connected to a pilot flame assembly (400), which includes a pilot flame burner (410) and a thermocouple (420). The pilot flame burner (410) is connected to the pilot flame gas output terminal (320) via a pilot flame gas pipeline. The thermocouple (420) is used to detect the flame of the pilot flame burner (410). The thermocouple (420) is electrically connected to the flameout protection solenoid valve (310); the magnetic induction controller (200) is connected to the pilot flame gas pipeline and is used to control the on / off state of the pilot flame gas pipeline. The magnetic induction controller (200) is a normally open valve; when the detected liquid level changes to a position lower than a predetermined position, the magnetic drive unit (110) of the float mechanism (100) changes position and triggers the magnetic induction controller (200) to enter the state of cutting off the pilot flame gas pipeline.

7. The anti-dry-burning protection device assembly according to claim 5, characterized in that: The magnetic induction controller (200) includes a valve body (210) and a valve core (220). The valve body (210) is provided with an air inlet channel (211), an air outlet channel (212), and a valve cavity (213). The valve core (220) is disposed in the valve cavity (213) and has an open valve position and a closed valve position: in the open valve position, the air inlet channel (211) and the air outlet channel (212) are interconnected; in the closed valve position, the valve core (220) disconnects the air inlet channel (211) from the valve cavity (213). The air intake channel (211) and the air outlet channel (212) are connected; the valve core (220) is provided with a magnetic linkage part (230), which is used to drive the valve core (220) to switch positions. The magnetic linkage part (230) and the magnetic drive part (110) are linked and cooperated with each other through a magnetic field. When the magnetic drive part (110) changes position, it drives the magnetic linkage part (230) to change position through the magnetic field, so as to drive the valve core (220) to switch positions.

8. The anti-dry-burning protection device assembly according to claim 7, characterized in that: The air intake channel (211) and the air outlet channel (212) are interconnected through the valve chamber (213). The valve chamber (213) has a communication port (214) on its wall to allow the air intake channel (211) and the air outlet channel (212) to communicate. The valve core (220) is provided with a sealing plug (221), which is used to open and close the communication port (214) respectively when the valve core (220) changes the valve open position and the valve close position. The valve core (220) includes a spindle (222), which includes a mounting plate (2221) and a connecting shaft (2222). One end of the connecting shaft (2222) is connected to the mounting plate (213). The magnetic linkage part (230) is fixed to the mounting plate (2221) at the center of the connection. The sealing plug (221) is disposed on the connecting shaft (2222). The cavity wall of the valve cavity (213) is provided with a connecting hole (215). The connecting port (214) is the opening of the connecting hole (215). The sealing plug (221) is disposed opposite to the connecting port (214). The bottom of the connecting hole (215) is provided with a connecting hole (216). The mounting plate (2221) slides with the valve cavity (213) along the axial direction of the connecting shaft (2222). The other end of the connecting shaft (2222) slides with the connecting hole (216) along the axial direction of the connecting shaft (2222).

9. The anti-dry-burning protection device assembly according to claim 8, characterized in that: The valve body (210) includes a main seat (217) and a cover (218). The air inlet channel (211), the air outlet channel (212), and the connecting hole (215) are disposed on the main seat (217). The main seat (217) has a cavity groove. The connecting hole (215) is opened at the bottom of the cavity groove. The cover (218) is installed on the main seat (217) and covers the opening of the cavity groove. The cover (218) and the cavity groove together form the valve cavity (213).

10. The anti-dry-burning protection device assembly according to claim 9, characterized in that: The main body (217) is provided with a plug-in boss (2171) around the opening of the cavity groove, and the cover (218) is provided with a mating groove (2181) adapted to the plug-in boss (2171). The cover (218) is plugged into the plug-in boss (2171) through the mating groove (2181). A sealing ring is provided between the cover (218) and the main body (217). The sealing ring abuts against the cover (218) around the opening of the mating groove (2181) and the main body (217) around the plug-in boss (2171).

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