Single-electrode metal heating rod

Abstract

The utility model provides a single electrode metal heating rod, including trigger subassembly, external subassembly and heating subassembly, the external subassembly includes the casing, the bottom of casing is evenly opened with a plurality of water inlet, the inside of casing is provided with the floating plate, the top of floating plate is fixedly connected with the cylindrical object, and the top of the cylindrical object is fixedly connected with the water inlet. The inner side wall of the shell is fixedly connected with a partition plate, the columnar body penetrates through the partition plate, and the top of the columnar body is fixedly connected with a guide rod; through the arrangement of the floating plate, the first contact and the second contact, when the heating rod is put into liquid, the floating plate drives the cylindrical body to vertically move upwards along with the rising of the liquid level, the cylindrical body pushes the guide rod to enable the transmission rod at the top of the guide rod to generate lever motion through the fixing block, and the first contact and the second contact are in contact and closed; and when the device leaves the liquid level or the liquid level drops, the floating plate moves downwards to reset the spring, and the contact is separated and powered off under the action of the reverse lever, so that the potential safety hazard caused by forgetting to cut off the power is avoided.

Description

A single-electrode metal heating rod Technical Field

[0001] This utility model relates to a heating device, and more particularly to a single-electrode metal heating rod. Background Technology

[0002] The heating element of a water heater is installed inside the heating cup, converting electrical energy into heat energy to heat the water in the cup. The heating element typically consists of an outer sleeve made of stainless steel, nickel-iron alloy, or copper, and a heating wire inside the sleeve. In areas with poor water quality, especially in acidic regions, the heating element is constantly immersed in acidic water, making the outer sleeve susceptible to corrosion. As corrosion worsens, it can eventually perforate the sleeve, allowing water to enter and directly contact the spiral heating wire. This can cause the heating wire to short-circuit and melt, or even lead to electrical leakage, resulting in personal injury to the user.

[0003] Chinese patent publication (publication number: CN201846489U) discloses a water heater heating rod, which includes a metal tube and a heating wire. The heating wire is disposed inside the metal tube and is led out of the metal tube by a terminal and connected to an external power source. The space between the heating wire and the inner wall of the metal tube is filled with a dense insulating and heat-conducting material. This heating rod has good corrosion resistance and can prevent leakage accidents even when the heating rod is punctured, thereby effectively improving the service life and safety of the water heater heating rod. However, the heating structure of the electric heating rod is simple. When it is taken directly out of the container without being powered on, the electric heating rod will still generate heat. If it is accidentally placed on flammable materials and the power is not turned off, the electric heating rod may ignite furniture and cause a fire, resulting in double loss of family safety and property. Therefore, the electric heating rod continues to heat after being removed from the water, which poses a safety hazard. To address this, a single-electrode metal heating rod is proposed. Summary of the Invention

[0004] In view of this, the present invention provides a single-electrode metal heating rod to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0005] The technical solution of this utility model is as follows: a single-electrode metal heating rod, including a triggering component, an external component, and a heating component;

[0006] The external component includes a housing with several water inlet holes evenly distributed at the bottom. A float plate is located inside the housing. A columnar body is fixedly connected to the top of the float plate. A partition plate is fixedly connected to the inner wall of the housing. The columnar body penetrates the partition plate. A guide rod is fixedly connected to the top of the columnar body. Four support rods are fixedly connected to the top of the partition plate. A support plate is fixedly connected to the top of the four support rods. The top of the guide rod penetrates the bottom of the support plate and is slidably connected to the support plate. A spring is wound around the bottom outer side of the guide rod. Both ends of the spring are fixedly connected to the columnar body and the support plate, respectively. A transmission rod is hinged to the top of the guide rod via a hinge shaft. A fixing block is installed on the top of the support plate, and the fixing block is hinged to the transmission rod via a hinge shaft. A contact point one is installed at the end of the transmission rod away from the guide rod. A contact point two is installed on the top of the partition plate.

[0007] More preferably, a rubber ring is slidably connected to the outer wall of the columnar body, and the rubber ring is fixedly connected to the partition plate.

[0008] More preferably, a fan is installed at the bottom of the housing.

[0009] More preferably, a metal outer tube is installed on the top of the housing, and a sealing ceramic is installed on the top of the metal outer tube. An electrode and a spiral heating wire are provided inside the metal outer tube. The electrode passes through the sealing ceramic, and the spiral heating wire is wound around the outside of the electrode. The electrode is electrically connected to contact point one, and the spiral heating wire is electrically connected to contact point two.

[0010] More preferably, a temperature sensor is installed on the outer wall of the housing, and a thermometer is installed on the top of the sealing ceramic, with the thermometer electrically connected to the temperature sensor.

[0011] More preferably, an insulating base is installed at the bottom of the spiral heating wire, and an insulating filler is provided above the insulating base, the insulating filler covering the outside of the spiral heating wire.

[0012] In a further preferred embodiment, a switch is installed on the top of the sealing ceramic, the switch is hinged to a waterproof cover, and the switch is electrically connected to the electrode and the fan respectively.

[0013] The present invention has the following advantages due to the adoption of the above technical solution:

[0014] I. This utility model, through the arrangement of a float plate, contact point one, and contact point two, allows liquid to be drawn in through the water inlet at the bottom of the housing when the heating rod is placed in the liquid. The float plate rises with the liquid level, causing the columnar body to move vertically upward. The columnar body pushes the guide rod, causing the transmission rod at the top of the guide rod to generate a lever motion through the fixed block, so that contact point one and contact point two come into contact and close. At this time, the electrode and the spiral heating wire form a closed circuit. Current flows through the electrode and the spiral heating wire to generate Joule heat. When the device leaves the liquid surface or the liquid level drops, the float plate moves down to reset the spring. Through the reverse lever action, the contacts separate and the power is cut off, thus avoiding the safety hazards caused by forgetting to turn off the power.

[0015] Second, this utility model, through the setting of the fan, when contact one and contact two are closed, the fan starts, causing the liquid to flow, thereby improving the heat exchange efficiency between the metal outer tube and the liquid, and making the liquid temperature reach the appropriate temperature more quickly.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 is a top view of the present invention;

[0019] Figure 2 is a front structural view of this utility model;

[0020] Figure 3 is a bottom view of the structure of this utility model;

[0021] Figure 4 is a diagram of the internal structure of the metal outer tube of this utility model;

[0022] Figure 5 is a structural diagram of the internal structure of the shell of this utility model.

[0023] Reference numerals: 100, Trigger assembly; 101, Float plate; 102, Columnar body; 103, Guide rod; 104, Spring; 105, Rubber ring; 106, Support rod; 107, Divider plate; 108, Support plate; 109, Transmission rod; 110, Fixing block; 111, Contact one; 112, Contact two; 113, Water inlet; 200, External assembly; 201, Housing; 202, Metal outer tube; 203, Fan; 204, Sealing ceramic; 205, Waterproof cover; 206, Switch; 207, Temperature sensor; 208, Thermometer; 300, Heating assembly; 301, Electrode; 302, Spiral heating wire; 303, Insulating filler; 304, Insulating base. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0025] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] As shown in Figures 1-5, this embodiment of the present invention provides a single-electrode metal heating rod, including a triggering component 100, an external component 200, and a heating component 300;

[0027] The external component 200 includes a housing 201. A plurality of water inlet holes 113 are evenly distributed at the bottom of the housing 201. A float plate 101 is disposed inside the housing 201. A columnar body 102 is fixedly connected to the top of the float plate 101. A partition plate 107 is fixedly connected to the inner wall of the housing 201. The columnar body 102 penetrates the partition plate 107. A guide rod 103 is fixedly connected to the top of the columnar body 102. Four support rods 106 are fixedly connected to the top of the partition plate 107. A support plate 108 is fixedly connected to the top of the four support rods 106. The top of the guide rod 103 penetrates the partition plate 107. At the bottom of the support plate 108, the guide rod 103 is slidably connected to the support plate 108. A spring 104 is wound around the bottom outer side of the guide rod 103. The two ends of the spring 104 are fixedly connected to the column 102 and the support plate 108, respectively. A transmission rod 109 is hinged to the top of the guide rod 103 through a hinge shaft. A fixing block 110 is installed on the top of the support plate 108. The fixing block 110 is hinged to the transmission rod 109 through a hinge shaft. A contact point 111 is installed at the end of the transmission rod 109 away from the guide rod 103. A contact point 112 is installed on the top of the partition plate 107.

[0028] In one embodiment, a rubber ring 105 is slidably connected to the outer wall of the column 102. The rubber ring 105 is fixedly connected to the partition plate 107. By setting the rubber ring 105, a dynamic seal is formed between the rubber ring 105 and the partition plate 107, which helps to prevent liquid at the bottom of the partition plate 107 from seeping into the top of the partition plate 107.

[0029] In one embodiment, a fan 203 is installed at the bottom of the housing 201. The fan 203 drives the liquid to flow, which facilitates heat exchange between the metal outer tube 202 and the liquid.

[0030] In one embodiment, a metal outer tube 202 is installed on the top of the housing 201, and a sealing ceramic 204 is installed on the top of the metal outer tube 202. An electrode 301 and a spiral heating wire 302 are provided inside the metal outer tube 202. The electrode 301 passes through the sealing ceramic 204, and the spiral heating wire 302 is wound around the outside of the electrode 301. The electrode 301 is electrically connected to contact point 111, and the spiral heating wire 302 is electrically connected to contact point 112. Through the arrangement of the electrode 301 and the spiral heating wire 302, the current flows through the electrode 301 and then through the spiral heating wire 302 to generate Joule heat, which facilitates the heating of the liquid.

[0031] In one embodiment, a temperature sensor 207 is installed on the outer wall of the housing 201, and a temperature gauge 208 is installed on the top of the sealing ceramic 204. The temperature gauge 208 is electrically connected to the temperature sensor 207. The arrangement of the temperature gauge 208 and the temperature sensor 207 facilitates real-time monitoring of the liquid temperature through the temperature gauge 208.

[0032] In one embodiment, an insulating base 304 is installed at the bottom of the spiral heating wire 302, and an insulating filler 303 is provided above the insulating base 304. The insulating filler 303 covers the outside of the spiral heating wire 302. Both the insulating base 304 and the insulating filler 303 are made of aluminum nitride ceramic. By setting the insulating filler 303 and the insulating base 304, the spiral heating wire 302 can exchange heat with the liquid while avoiding direct contact, thus improving the safety of the device.

[0033] In one embodiment, a switch 206 is installed on the top of the sealing ceramic 204. The switch 206 is hinged to a waterproof cover 205. The switch 206 is electrically connected to the electrode 301 and the fan 203 respectively. The switch 206 facilitates the control of the opening and closing of the electrode 301 and the fan 203. In conjunction with the waterproof cover 205, liquid is prevented from entering the device through the switch 206 and causing short circuits or leakage, thus improving the safety of the device.

[0034] In operation, the device is placed in a liquid, and switch 206 is turned on. Liquid enters the housing 201 through the water inlet 113 at the bottom. The float 101, made of polystyrene foam, rises with the liquid level, causing the columnar body 102 to move vertically upwards. The columnar body 102 pushes the guide rod 103, causing it to drive one end of the transmission rod 109 upwards. With the fixed block 110, the transmission rod 109 uses the fixed block 110 as a fulcrum to generate a lever motion. The other end moves downwards synchronously, causing contact 111 to contact and close with contact 112. At this time, electrode 301 and spiral heating wire 302 form a closed circuit. Current flows through electrode 301 and spiral heating wire 302, generating Joule heat. Since the insulating base 304 and insulating filler 303 are both made of aluminum nitride ceramic, which has excellent thermal conductivity, the heat generated by spiral heating wire 302 can be transferred to the metal outer tube 202. The metal outer tube 202 then transfers the heat to the liquid, allowing the spiral heating wire 302 to pass through the insulating filler 302. 3. The metal outer tube 202 exchanges heat with the external liquid. Combined with the start of the fan 203, this drives the liquid flow, improving heat exchange efficiency. Furthermore, if the metal outer tube 202 is damaged, it prevents direct contact between the liquid and the electrode 301, further enhancing the device's safety. When the device leaves the liquid surface or the liquid level drops, the float 101 pulls the columnar body 102 downwards. The columnar body 102 drives the guide rod 103 downwards, causing the transmission rod 109 to perform a lever movement in the opposite direction, resulting in the separation of contact one 111 and contact two 112. To avoid safety hazards caused by forgetting to turn off the power, when the device is in the inverted state, the float 101, column 102 and guide rod 103 generate a downward force due to gravity, which causes the column 102 to exert downward pressure on the spring 104. At this time, the spring 104 applies a reaction force to the column 102 with the support plate 108 as the fulcrum. At this time, the column 102 cannot move downward to close the contacts 111 and 112, thus preventing the device from starting on its own in the inverted state and thus improving the safety of the device.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A single-electrode metal heating rod, comprising a triggering component (100), an external component (200), and a heating component (300), characterized in that: The external component (200) includes a housing (201), with a plurality of water inlets (113) evenly distributed at the bottom of the housing (201). A float plate (101) is provided inside the housing (201). A columnar body (102) is fixedly connected to the top of the float plate (101). A partition plate (107) is fixedly connected to the inner wall of the housing (201). The columnar body (102) penetrates the partition plate (107). A guide rod (103) is fixedly connected to the top of the columnar body (102). Four support rods (106) are fixedly connected to the top of the partition plate (107). A support plate (108) is fixedly connected to the top of the four support rods (106). The top of the guide rod (103) penetrates the partition plate (107). At the bottom of the support plate (108), the guide rod (103) is slidably connected to the support plate (108). A spring (104) is wound around the bottom outer side of the guide rod (103). The two ends of the spring (104) are fixedly connected to the column (102) and the support plate (108) respectively. A transmission rod (109) is hinged to the top of the guide rod (103) through a hinge shaft. A fixing block (110) is installed on the top of the support plate (108). The fixing block (110) is hinged to the transmission rod (109) through a hinge shaft. A contact point one (111) is installed at the end of the transmission rod (109) away from the guide rod (103). A contact point two (112) is installed on the top of the partition plate (107).

2. The single-electrode metal heating rod according to claim 1, characterized in that: A rubber ring (105) is slidably connected to the outer wall of the column (102), and the rubber ring (105) is fixedly connected to the partition plate (107).

3. A single-electrode metal heating rod according to claim 1, characterized in that: A fan (203) is installed at the bottom of the housing (201).

4. A single-electrode metal heating rod according to claim 3, characterized in that: The top of the housing (201) is fitted with a metal outer tube (202), and the top of the metal outer tube (202) is fitted with a sealing ceramic (204). Inside the metal outer tube (202) are an electrode (301) and a spiral heating wire (302). The electrode (301) passes through the sealing ceramic (204), and the spiral heating wire (302) is wound around the outside of the electrode (301). The electrode (301) is electrically connected to the first contact (111), and the spiral heating wire (302) is electrically connected to the second contact (112).

5. A single-electrode metal heating rod according to claim 4, characterized in that: A temperature sensor (207) is installed on the outer wall of the housing (201), and a thermometer (208) is installed on the top of the sealing ceramic (204). The thermometer (208) is electrically connected to the temperature sensor (207).

6. A single-electrode metal heating rod according to claim 4, characterized in that: An insulating base (304) is installed at the bottom of the spiral heating wire (302), and an insulating filler (303) is provided above the insulating base (304), which covers the outside of the spiral heating wire (302).

7. A single-electrode metal heating rod according to claim 4, characterized in that: A switch (206) is installed on the top of the sealing ceramic (204). The switch (206) is hinged to a waterproof cover (205) via a hinge. The switch (206) is electrically connected to the electrode (301) and the fan (203) respectively.

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