JP3243588U - Electric hot water bottle that prevents dry heating and sparks - Google Patents

Abstract

[Problem] To provide an electric hot water bottle that prevents dry heating and sparks. [Solution] The present invention includes an electric hot water bottle body 1, a live wire jack electrically connected to a power supply live wire, a neutral wire jack electrically connected to a power supply neutral wire, and an indicator light. A charging unit 3 including a 3-pole jack 31 of an indicator light jack connected to the 3-pole jack, and a power supply connection unit 2 including a live wire pin 21, a neutral wire pin 22, and an indicator light pin 23 corresponding to the 3-pole jack. , an electric hot water bottle that prevents dry heating and sparks, when the end surfaces of the conductive elements in the live wire jack and the neutral wire jack are in contact with the end surfaces of the corresponding live wire pin and neutral wire pin, respectively; There is a distance of 1-10 mm between the end face of the conductive element in the indicator light jack and the end face of the indicator light pin, the conductive element is attached to the conductive pin holder 10, and the power connection unit is connected to the conductive element. It further includes an electrically connected heat generating pipe 4. [Selection diagram] Figure 1

Description

FIELD OF THE INVENTION The present invention relates to the technical field of electric hot water bottles, in particular, electric hot water bottles that prevent dry heating and sparks.

Electric hot water bottles are popular with consumers because of their long heat retention time, good heating effect and ease of use. Electric hot water bottles commonly seen today generally include an electric hot water bottle body, a heating unit, a power connecting unit and a charging unit. When connected to a power supply via the charging unit, the heating unit and power supply connection unit form a circuit with the power supply to conduct electricity, the power supply indicator light in the charging unit lights up, and the heating unit heats up the liquid in the hot water bottle. As it heats up and the heating time increases, the vapor from the liquid continuously expands and the original flat body also expands and bulges. However, in practical applications, users often think that the hot water bottle has already been charged normally when they see the indicator light on, so they stop inserting further into the jack of the charging unit. , the pin of the power connection unit will not be fully inserted into the jack, thus easily causing loose contact, resulting in hot water bottle burning due to sparks, which poses a safety hazard during use. In addition, the electric hot water bottle on the market has a poor effect of preventing empty heating, and there is also a problem that the main body of the hot water bottle is likely to burn out.

SUMMARY OF THE INVENTION The present invention aims at an electric hot water bottle that prevents dry heating and sparks, designed to solve the above technical deficiencies.

In the present invention, an electric hot water bottle body, a live line jack electrically connected to a power live line, a neutral line jack electrically connected to a power neutral line, and an indicator electrically connected to an indicator light An electric hot water bottle that prevents dry heating and sparking, including a charging unit including a three-pole jack of a light jack, and a power connection unit including a live wire pin, a neutral wire pin and an indicator light pin corresponding to the three-pole jack. wherein the end faces of the conductive elements of the live and neutral jacks are in contact with the corresponding end faces of the live and neutral pins, respectively, labeled as the end faces of the conductive elements of the indicator light jack; There is a distance of 1-10 mm between the end surface of the light pin, the conductive element is mounted on the conductive pin holder, the power connection unit further includes a heating pipe electrically connected to the conductive element, An electric hot water bottle is designed to prevent dry heating and sparking, characterized by a thermal controller and thermal protection switch installed between the conductive element and the heating pipe.

More preferably, the 3-pole jack has a conductive element, both of the conductive elements are copper tubes, and the length of the copper tubes in the live and neutral jacks is the same. , the length of the copper tube in the indicator light jack is 1-10 mm shorter than the length of the copper tube in the hot wire jack and the neutral wire jack, and the lengths of the live wire pin, the neutral wire pin and the indicator light pin are the same.

More preferably, there are conductive elements in the three-pole jack, the conductive elements are all copper tubes, and the length of the copper tubes of the live jack, neutral jack and indicator light jack are the same, the lengths of the live and neutral pins are the same, and the length of the indicator light pin is 1-10 mm shorter than the length of the live and neutral pins.

More preferably, the heating pipe is made by aluminum casting.

Preferably, the heating pipe has a U-shaped bent structure.

More preferably, the power connection unit further includes a housing, and the housing is provided with conductive pin holders for fixing a live wire pin, a neutral wire pin and an indicator light pin.

Preferably, the housing is provided with a slide cover for protecting the conductive pin holder in the conductive pin holder.

Preferably, the heat pipe is externally engaged with a protective cover consisting of an upper mesh cover and a lower mesh cover, the protective cover is of hollow design, and the protective cover is placed inside the housing of the power connection unit. be.

The technical effects of the present invention are as follows.

1. By shortening the copper tube or the indicator pin in the indicator light jack, when the live copper tube and the neutral copper tube are in contact with the live pin and the neutral pin, respectively, the indicator light copper tube and the indicator light pin are shortened. The indicator light pin remains untouched, at this point the indicator light does not light up, prompting the user to insert further, which ensures that the copper tube and the pin are mated, Since good contact can be ensured, sparks can be effectively prevented and safety in use can be enhanced.

2. When dry heating occurs, the temperature controller can quickly cut off the power supply to obtain a protective effect. The whole product has a high effect of preventing empty heating, and even if there is no water in the electric hot water bottle, if the heating pipe heats up for more than 20 seconds, the power supply will be cut off.

3. If the temperature controller fails, the thermal protection switch can jump to break the circuit and prevent dry heating.

1 is an exploded view showing the overall structure of the present invention; FIG. FIG. 2 is a schematic diagram of the structure of the heating pipe of the present invention;

The following clearly and completely describes the technical solutions in the embodiments of the present invention together with the drawings in the embodiments of the present invention, of course, the described embodiments are only part of the embodiments of the present invention. No, not all of them. All other embodiments obtained by persons skilled in the art based on the embodiments of the present invention shall fall within the protection scope of the present invention.

In the present embodiment, as shown in FIGS. 1 and 2, the structure of the electric hot water bottle main body 1 according to the present embodiment is substantially the same as that of the existing electric hot water bottle, and the closed cavity inside thereof is provided with a structure for transmitting heat. Filled with a liquid carrier, it has a heating unit inside, the heating unit mainly includes a heating pipe 4, the heating pipe 4 is installed in a sealed cavity and immersed in the liquid carrier, and the electric hot water bottle body 1 is powered by a power supply It is connected to a power supply through the connection unit 2 and the charging unit 3 and charged, thereby energizing the heating pipe 4 to generate heat and heat the liquid.

The power connection unit 2 includes a housing, and the housing includes an insulating bracket airtightly connected to the electric hot water bottle body 1. A part of the insulating bracket is exposed to the outside of the electric hot water bottle body 1, and the other part is exposed to the outside of the electric hot water bottle body 1. Enclosed in the sealed cavity of the electric hot water bottle body 1, the insulating bracket is mounted with a power connector, the power connector has three pins corresponding to the three-pole jack 31, namely live pin 21, neutral pin 22 and indicator light pins 23 . The electric hot water bottle main body 1, the heating pipe 4 and the power supply connection unit 2 are assembled as one body, but the charging unit 3 is a separate component, and generally adopts a bracket type. A jack 31 is provided, the three-pole jack 31 being electrically connected to a live jack electrically connected to the mains live wire, a neutral wire jack electrically connected to the mains neutral wire, and an indicator light, respectively. When the charging unit 3 is connected to the power supply, the heating pipe 4 and the power supply connection unit 2 form a circuit with the power supply to conduct electricity, and the power supply indicator light in the charging unit 3 lights up. do.

The conductive elements in the 3-pole jack described above employ a copper tube 311 embedded within an insulating housing. The copper tube 311 in the indicator light jack in the present invention is not of the same length as the copper tube 311 in the live and neutral jacks, in order to prevent sparking due to unreliable insertion into the jack during use. so that the length of the indicator light copper tube 311 is 1-10 mm, most preferably 3-5 mm shorter than the length of the copper tube 311 in the live and neutral jacks. The end face of the copper tube 311 in the live wire jack and the neutral wire jack are flush with each other, and the end face of the indicator light copper tube 311 is a 1-10 mm step from the end face of the copper tube 311 in the live wire jack and the neutral wire jack. There is The live wire pin 21, the neutral wire pin 22, and the indicator pin 23 on the power supply connection unit 2 have the same length, and their end surfaces are flush with each other. Thus, when the end faces of the copper tubes 311 in the live and neutral jacks come into contact with the corresponding end faces of the live and neutral pins 21 and 22 respectively, the end faces of the copper tubes 311 in the indicator light jack , and the end face of the indicator pin 23 is also spaced from 1 to 10 mm. Thus, the indicator light copper tube 311 and the indicator light pin 23 are in contact when the live copper tube 311 and the neutral copper tube 311 are brought into contact with the live pin 21 and the neutral pin 22, respectively. At this time, the indicator light is not lit, prompting the user to insert further, so that each copper tube 311 and the corresponding pin are securely fitted one by one, It can ensure good contact and effectively prevent sparks. Similarly, shortening the indicator pin 23 can also solve this technical problem. Specifically, the lengths of the copper tubes 311 of the live wire jack, the neutral wire jack and the indicator lamp jack are made the same, the end surfaces of the respective copper tubes 311 are flush with each other, and the live wire pin 21 and the neutral wire are The length of the pin 22 is the same and both end faces are flush with each other, and the length of the indicator light pin 23 is 1-10 mm (most preferably 3-5 mm), ie for each pin provided on the insulating bracket, the end face of the indicator light pin 23 is 1-10 mm lower than the end faces of the live pin 21 and the neutral pin 22 .

The bracket is further provided with a microswitch 32 electrically connected to the copper tube 311 .

In addition to the two preferred embodiments shown, other means such as changing the installation position, specifically lowering the installation position of the copper tube 311 in the indicator light jack, or changing the position of the installation pin in the housing. Also, the electric hot water bottle main body 1, the insulating bracket, the housing, etc. are not limited to those shown in the drawings, and may be designed in other forms of structure. In short, without departing from the principle of the present invention, a person skilled in the art can make various modifications or improvements to the present invention, which shall all fall within the protection scope of the present invention.

Since the heat-generating pipe 4 is made by aluminum casting, the contact area between the heat-generating pipe 4 and the liquid in the electric hot-water bottle body 1 is increased, and the temperature can be raised by heating more quickly and uniformly.

The outside of the heat generating pipe 4 is covered with a protective cover 5 consisting of an upper mesh cover and a lower mesh cover, and the edges of the upper mesh cover and the lower mesh cover are provided with a snap structure, which is snapped to provide complete protection. A cover 5 is formed.

A temperature controller mount 7 for mounting a temperature controller 8 is integrally formed on the heating pipe 4 .

The heating pipe 4 is bent into a U-shaped structure. This structure extends the length of the heat generating pipe 4 in a limited space for faster heating and the edge sets the central hot spot 6 closer to the temperature controller mount 7 .

The protective cover 5 is provided with a large number of guide holes penetrating through both surfaces. The guide hole 9 facilitates the passage of water in the electric hot water bottle main body 1 and has the role of adjusting the water temperature more uniformly.

A temperature controller mount 7 is provided near the hot spot 6 in the center of the heat generating pipe 4 .

With this structure, the temperature controller 8 is brought closer to the high temperature point 6, and in the event of dry heating, the temperature controller 8 can quickly cut off the power supply to obtain a protective effect. The entire product has a high effect of preventing empty heating, and even if there is no water in the electric hot water bottle body 1, the power supply will be cut off if the heating pipe 4 heats up for about 20 seconds more.

Either side of the hot spot 6 in the middle of the heat pipe 4 is provided with thermally conductive ribs connected to temperature controller mounts 7 . Due to the heat conducting action of the heat conductive ribs, the high temperature at the high temperature point 6 can be quickly transferred to the temperature controller 8 to avoid dry heating.

An electrical package 12 is provided outside the protective cover 5, and a conductive pin holder 10 is installed in the electrical package 12. The conductive pin holder 10 is electrically connected to the heating pipe 4. The conductive pin holder 10 includes: A temperature controller 8 and a thermal protection switch 11 are further electrically connected and the temperature controller 8 is mounted on the temperature controller mount 7 .

In addition, there are two thermal protection switches 11, which are located on the neutral wire and live wire respectively, and are similar to fuses. can be prevented.

A panel is fixed to the outside of the electrical package 12, and a slide cover for shielding and protecting the conductive pin holder 10 is rotatably connected to the panel.

Wiring terminals 13 protrude from both ends of the heating pipe 4 , and the heating pipe 4 is provided with a PVC sheath at the wiring terminals 13 .

The present invention is not limited to the most preferred embodiments described above, and one can obtain various other forms of products with the suggestions of the present invention, regardless of any changes in their shape or structure. , all the same or similar technical solutions to the present application shall fall within the protection scope of the present invention.

1: Hot water bottle body 2: Power connection unit 21: Live wire pin 22: Neutral wire pin 23: Indicator light pin 3: Charging unit 31: 3-pole jack 311: Copper tube 32: Micro switch 4: Heat generating pipe 5: Protective cover 6: hot spot 7: temperature controller mount 8: temperature controller 9: flow guide hole 10: conductive pin holder 11: thermal protection switch 12: electrical package 13: wiring terminal

Claims (8)

An electric hot water bottle body (1), live wire jacks electrically connected to power live wires, neutral wire jacks electrically connected to power supply neutral wires, and indicators electrically connected to indicator lights, respectively. A charging unit (3) including a 3-pole jack (31) of a light jack, and a live line pin (21), a neutral line pin (22) and an indicator light pin (23) corresponding to the 3-pole jack (31). and a power supply connection unit (2), wherein the end surfaces of the conductive elements in the hot wire jack and the neutral wire jack are respectively corresponding hot wire pins (21). and when in contact with the end face of the neutral pin (22), there is a distance of 1-10 mm between the end face of the conductive element in the indicator light jack and the end face of the indicator light pin (23), and the conductive element is , mounted on a conductive pin holder (10), the power connection unit (2) further includes a heating pipe (4) electrically connected to the conductive element, the conductive element and the heating pipe (4) An electric hot water bottle preventing dry heating and sparks, characterized in that a thermal controller and a thermal protection switch (11) are provided between them. The 3-pole jack (31) has a conductive element, both of the conductive elements are copper tubes (311), the length of the copper tubes (311) of the live and neutral jacks are the same, the length of the copper tube (311) in the indicator light jack is 1-10 mm shorter than the length of the copper tube (311) in the live and neutral jacks, and the live pin (21 ), neutral wire pin (22) and indicator light pin (23) have the same length. The 3-pole jack (31) has a conductive element, the conductive elements are all copper tubes (311), and the live line jack, neutral line jack and indicator light jack copper tubes ( 311) are the same length, the live pin (21) and the neutral pin (22) are the same length, the indicator light pin (23) is the same length as the live pin (21) and the length of the neutral wire pin (22) is 1-10mm shorter than the length of the dry-heating and spark-proof electric hot-water bottle according to claim 1. The electric hot water bottle preventing dry heating and sparking according to claim 1, characterized in that the heating pipe (4) is made of aluminum casting. The electric hot water bottle preventing dry heating and sparking according to claim 4, characterized in that the heating pipe (4) has a U-shaped bent structure. The power connection unit (2) further comprises a housing in which a conductive pin holder (10) for fixing a live pin (21), a neutral pin (22) and an indicator light pin (23). The electric hot water bottle preventing dry heating and sparking according to claim 1, characterized in that it is provided with: The electric hot water bottle preventing dry heating and sparking as claimed in claim 6, characterized in that the housing is provided with a slide cover for protecting the conductive pin holder (10) in the conductive pin holder (10). A protective cover (5) consisting of an upper mesh cover and a lower mesh cover is engaged with the outside of the heating pipe (4), and the protective cover (5) has a hollow design, and the protective cover (5) is: The electric hot water bottle preventing dry heating and sparking according to claim 6, characterized in that it is arranged in the housing of the power connection unit (2).