Integrated temperature control and boil-dry prevention device for electric hot water bottles

Abstract

To provide an integrated temperature control and dry-heating prevention device for an electric hot water bottle, which has a simpler structure and reduces manufacturing costs. [Solution] A thermally conductive metal shell 6 is engaged with the center of the inside of a heating tube 5, a temperature control assembly is fixedly attached inside the thermally conductive metal shell, and a number of protrusions are provided on the side of the thermally conductive metal shell, so that the protrusions and the heating tube are in close contact with each other. Only one temperature control assembly is used to realize monitoring of water temperature and dry-burn prevention, the temperature control assembly is attached inside the thermally conductive metal shell with protrusions, and the sensing surface of the temperature control assembly faces downward, so that the sensing surface at the lower end of the thermally conductive metal shell measures the water temperature, and the protrusions come into contact with the heating tube to realize localized contact, and when dry-burning, the heating tube transfers heat through the closely-contacted protrusions, and the same temperature control assembly is used to measure the dry-burn temperature.

Description

[Technical field]

[0001] This invention relates to the technical field of electric hot water bottles, and more particularly to an integrated temperature control and dry-burn prevention device for electric hot water bottles. [Background technology]

[0002] Hot water bottles are one of the essential heating devices that people use to keep their hands and feet warm in winter. Conventional hot water bottles have the problem of being inconvenient because they require frequent replacement of hot water, and so there are now many different types of electric hot water bottles on the market. When a user wants to warm themselves up, they simply plug the power cord of the electric hot water bottle into a power outlet and let it charge and heat for a while, after which the electric hot water bottle will generate enough heat to warm them up.

[0003] Conventional electric hot water bottles generally require two temperature control assemblies inside to achieve the effects of dry-burn prevention and water temperature control, one for monitoring the temperature of the heating tube to prevent dry-burn, and the other for monitoring the water temperature inside the electric hot water bottle. Because there are many functional parts and the structure is complicated, and the metal shell that houses the dry-burn prevention temperature control assembly is fitted inside the spiral heating tube and is completely in close contact with the surroundings, if the temperature rise of the metal shell is too large, the dry-burn prevention temperature control assembly may break down due to very high temperatures. Summary of the Invention [Problem to be solved by the invention]

[0004] The object of the present invention is to provide an integrated temperature control and dry-burn prevention device for an electric hot water bottle in order to solve the above problems described in the Background of the Invention. [Means for solving the problem]

[0005] In order to achieve the above objective, the present invention provides the following technical solution: An integrated temperature control and dry-burn prevention device for an electric hot water bottle, which includes a hollow cover, a heating tube is installed inside the hollow cover, a positive post and a negative post are provided at both ends of the heating tube, respectively, and the positive post and the negative post are fixed to the inside of the hollow cover by a mounting panel, a thermally conductive metal shell is engaged with the center of the inside of the heating tube, and a temperature control assembly is fixedly installed inside the thermally conductive metal shell, a number of protrusions are provided on the side of the thermally conductive metal shell, and the protrusions and the heating tube are in close contact with each other.

[0006] Preferably, a power socket is provided at one end of the openwork cover, a power port is provided on the power socket, a conduit is provided on one side of the power socket, and the conduit extends to the inside of the openwork cover, and the wire in the conduit is connected to the temperature management assembly and the heating tube by a series circuit.

[0007] Preferably, there is an openwork structure on the openwork cover, and the openwork cover is made by assembling two independent frames symmetrically.

[0008] Preferably, the temperature management assembly includes a temperature controller and a temperature fuse, the temperature controller is attached to the bottom of the center of the inside of the thermally conductive metal shell, and the bottom of the thermally conductive metal shell faces toward the inside of the hot water bottle, and the temperature fuse is fixedly attached to the inside of one of the protrusions and is in close contact with the inner surface of the protrusion.

[0009] Preferably, the thermally conductive metal shell and the protrusion are one-piece molded integral structure, the thermally conductive metal shell is an aluminum part, and the outer surface of the protrusion is a circular arc surface. Effect of the Invention

[0010] The present invention has the following beneficial effects compared to the prior art: the present invention uses only one temperature control assembly to monitor the water temperature and prevent dry-burning; the temperature control assembly is mounted in a thermally conductive metal shell with protrusions, and the sensing surface of the temperature control assembly faces downwards, so that the sensing surface at the bottom end of the thermally conductive metal shell measures the water temperature; the protrusions contact the heating tube to achieve localized adhesion; when dry-burning, the heating tube transfers heat through the closely-contacted protrusions, and the same temperature control assembly measures the dry-burning temperature; the structure is simpler, and the manufacturing cost per hot water bottle is reduced; and compared to the conventional configuration, the contact surface is too large, which would cause the temperature of the thermally conductive metal shell to rise too quickly and prevent the hot water bottle from reaching the set temperature; and the disposable thermal fuse design can provide a protective function by cutting off the circuit when the temperature of the heating tube is too high after the temperature controller fails. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a perspective structural schematic diagram of the present invention. [Diagram 2] FIG. 2 is a front view of the present invention; [Diagram 3] FIG. 2 is a schematic diagram of the internal structure of the present invention. [Figure 4] 2 is a structural schematic diagram of the thermal management assembly of the present invention attached to the thermally conductive metal component; FIG. [Explanation of symbols]

[0012] 1 Openwork cover 2 Conduit 3 Power socket 4 Power Port 5 heating tube 6. Thermally conductive metal shell 7 Mounting Panel 8 Positive Post 9 Negative Post 10 protrusions 11 Temperature Controller 12 Thermal fuse. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the drawings of the embodiments of the present invention. It goes without saying that the described embodiments are not all the embodiments of the present invention, but only some of them. If a person skilled in the art obtains other embodiments based on the embodiments of the present invention without inventive work, they all belong to the protection scope of the present invention.

[0014] Referring to Figures 1 to 4, the present invention provides the following technical solutions. An integrated temperature control and dry-burn prevention device for an electric hot water bottle includes an openwork cover 1, in which a heating tube 5 is attached inside the openwork cover 1, a positive post 8 and a negative post 9 are provided at both ends of the heating tube 5, respectively, and the positive post 8 and the negative post 9 are fixed inside the openwork cover 1 by a mounting panel 7, a thermally conductive metal shell 6 is engaged with the center of the inside of the heating tube 5, and a temperature control assembly is fixedly attached inside the thermally conductive metal shell 6, a number of protrusions 10 are provided on the side of the thermally conductive metal shell 6, the protrusions 10 and the heating tube 5 are in close contact with each other, and the sensing surface of the temperature control assembly faces downward, so that the sensing surface at the lower end of the thermally conductive metal shell 6 measures the water temperature, and the protrusions 10 come into contact with the heating tube 5 to realize localized contact, and when dry-burning is performed, the heating tube 5 transfers heat through the closely contacted protrusions, and the same temperature control assembly is used to measure the dry-burning temperature and prevent dry-burning.

[0015] In this embodiment, preferably, a power socket 3 is provided at one end of the openwork cover 1, a power port 4 is provided on the power socket 3, a conduit 2 is provided on one side of the power socket 3, and the conduit 2 extends to the inside of the openwork cover 1, and the wire in the conduit 2 is connected to the temperature control assembly and the heating tube by a series circuit, so that power can be supplied normally.

[0016] In this embodiment, preferably, an openwork structure is provided on the openwork cover 1 to facilitate contact with water, and the openwork cover 1 is made by assembling two independent frames symmetrically, which plays the role of protection and support.

[0017] In this embodiment, the temperature control assembly includes a temperature controller 11 and a temperature fuse 12. The temperature controller 11 is attached to the bottom of the center of the inside of the thermally conductive metal shell 6, and the bottom of the thermally conductive metal shell 6 faces the inside of the hot water bottle. The temperature fuse 12 is fixedly attached to the inside of one of the protrusions 10 and is in close contact with the inner surface of the protrusion 10. The temperature fuse 12 can cut off the circuit when the temperature of the heating tube 5 is too high after the temperature controller 11 fails, thereby fulfilling a protective function.

[0018] In this embodiment, preferably, the thermally conductive metal shell 6 and the protrusion 10 are integrally molded into a one-piece structure, and the thermally conductive metal shell 6 is an aluminum part. The outer surface of the protrusion 10 is an arc surface, so that the protrusion 10 can be more closely attached to the heating tube 5 and realize heat conduction.

[0019] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is limited only by the following claims and equivalents thereto.

Claims

1. An integrated temperature control and dry-burn prevention device for an electric hot water bottle, comprising an openwork cover (1), characterized in that a heating tube (5) is attached inside the openwork cover (1), a positive post (8) and a negative post (9) are provided at both ends of the heating tube (5), respectively, and the positive post (8) and the negative post (9) are fixed inside the openwork cover (1) by a mounting panel (7), a thermally conductive metal shell (6) is engaged with the center of the inside of the heating tube (5), and a temperature control assembly is fixedly attached inside the thermally conductive metal shell (6), a plurality of protrusions (10) are provided on the side of the thermally conductive metal shell (6), and the protrusions (10) and the heating tube (5) are in close contact with each other.

2. The integrated temperature control and dry-burning prevention device for an electric hot water bottle according to claim 1, characterized in that: a power socket (3) is provided at one end of the openwork cover (1), a power port (4) is provided on the power socket (3), a conduit (2) is provided on one side of the power socket (3), and the conduit (2) extends to the inside of the openwork cover (1), and the conductor in the conduit (2) is connected to the temperature control assembly and the heating tube by a series circuit.

3. The integrated temperature control and dry-burning prevention device for an electric hot water bottle as described in claim 1, characterized in that an openwork structure is provided on the openwork cover (1), and the openwork cover (1) is made by symmetrically assembling two independent frames.

4. The integrated temperature control and dry-burning prevention device for an electric hot water bottle as described in claim 1, characterized in that the temperature control assembly includes a temperature controller (11) and a temperature fuse (12), the temperature controller (11) is attached to the bottom of the center of the inside of the thermally conductive metal shell (6) and the bottom of the thermally conductive metal shell (6) faces toward the inside of the hot water bottle, and the temperature fuse (12) is fixedly attached to the inside of one of its protrusions (10) and is in close contact with the inner surface of the protrusion (10).

5. The integrated temperature control and dry-burning prevention device for an electric hot water bottle as described in claim 1, characterized in that the thermally conductive metal shell (6) and the protrusion (10) are integrally molded into an integrated structure, the thermally conductive metal shell (6) is an aluminum part, and the outer surface of the protrusion (10) is an arcuate surface.

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