JP2021041028A - Electric hot-water bag having ptc heating pad - Google Patents

Abstract

To provide an electric hot-water bag having an improved PTC heating pad.SOLUTION: An electric hot-water bag includes a main body and an attachment base 2. A PTC heating pad 1 is fixed to the attachment base 2, the attachment base 2 and the main body are joined to each other in a sealing manner, the PTC heating pad 1 is connected to the attachment base 2, and the PTC heating pad 1 is located in the main body. The main body has further higher sealing performance, and hardly causes leakage. When heating, further equal heat generation becomes possible by the PTC heating pad 1, and occurrence of malfunctions such as water leakage and breakage of the electric hot-water bag caused by a pressure rise in the main body resulting from the unequal heating of the electric hot-water bag due to generation of minute air bubbles can be remarkably avoided, thus achieving further higher safety.SELECTED DRAWING: Figure 1

Description

The present invention relates to the field of household electric appliances, and specifically to an electric hot water bottle provided with a PTC heating pad.

An electric hot water heater including a heating assembly and a switch assembly in the Chinese Practical New Plan of Application No. 201320574077.0, wherein the heating assembly includes a tubular electric heating member, a temperature control device, and a fuse, and the temperature. The control device includes a temperature control base cover, a temperature controller, and a temperature control base. The temperature controller is provided in the temperature control base, and the tubular electric heating member is provided through a hole in the temperature control base cover. An electric hot water heater that is electrically connected to a temperature controller and a fuse is disclosed. The electric hot water bottle heating element described in this utility model can prevent the risk of empty heating and explosion due to too high temperature, has a simple structure, is properly arranged, and is safe to use. Has the advantage of being high.

However, when heated by a tubular electric heating member, the heating temperature is too high, and there is a significant safety risk. The PTC heating pad has the advantages of low thermal resistance and high heat exchange efficiency, and is a power-saving automatic constant temperature electric heater. Its safety is a salient feature. The most notable advantage is that in any application there is no safety risk such as burns, fires due to "redness" on the surface of the heater such as tubular electric heating members.

An object of the present invention is to provide an electric hot water bottle provided with a PTC heating pad in order to eliminate defects in the prior art.

The technical solutions used in the present invention are as follows.

An electric hot water bottle with a PTC heating pad, including a main body and a mounting base, the mounting base and the main body are hermetically joined, the PTC heating pad is connected to the mounting base, and the PTC heating pad is located inside the main body. It is characterized by that.

As a further optimization of the technical solution, the body is injection molded directly onto the mounting base.

As a further optimization of the technical solution, the PTC heating pad is placed in a nested mounting holder, which is symmetrical in structure and has uniform holes2. It is formed by fitting the mounting holder sheets together, the holes are formed by being partitioned by the partition ribs, and the partition ribs are locked to the surface of the PTC heating pad.

As a further optimization of the above technical solution, the holes uniformly provided in the above-mentioned holder sheet are rectangular.

As a further optimization of the above technical solution, a plurality of annular locking slots are provided on the outer periphery of the mounting base, and a plurality of annular recesses corresponding to the plurality of annular locking slots are provided inside the injection-molded main body end. Provided.

As a further optimization of the above technical solution, the main body of the present invention is made of silica gel.

As a further optimization of the above technical solution, the main body includes an inner layer main body and an outer layer main body, and the outer layer main body is provided on the outermost layer of the main body and is made of a flexible material, and is formed on the inner layer main body. The inner layer main body is provided in the innermost layer of the main body and is made of a flexible watertight material, which is brought into close contact with the human body to be touched, and stores the liquid medium by sealing the inner layer main body. Cavity is formed.

As a further optimization of the technical solution, the mounting base further includes an indicator light connected in parallel with the PTC heating pad.

Compared with the prior art, the main body of the present invention and the mounting base are hermetically joined, the PTC heating pad is connected to the mounting base, the PTC heating pad is located in the main body, and leakage is less likely to occur. When heating is performed, uniform heat generation is realized by the PTC heating pad, a small amount of air bubbles are generated, the occurrence of defects is largely avoided, and the safety is higher.

It is the schematic which shows the three-dimensional structure of the mounting base which concerns on this invention. It is the schematic which shows the three-dimensional structure of one Example of the main body which concerns on this invention. It is the schematic which shows the structure of another Example of the main body which concerns on this invention. It is the schematic which shows the three-dimensional structure of the mounting holder which concerns on this invention. It is the schematic which shows the structure of another Example of the electric hot water bottle which concerns on this invention.

Hereinafter, the present invention will be further described with reference to the drawings and embodiments for carrying out the invention.

Example 1
As shown in FIG. 1-4, the electric hot water bottle of the present invention includes a main body 11 and a mounting base 2 located at an end of the main body 11, and a PTC heating pad 1 is fixed to the mounting base 2.

The PTC heating pad 1 is arranged in a nesting holder 20, and the above-mentioned mounting holder 20 is fitted with two mounting holder sheets having a symmetrical structure and having uniform square holes. The square hole is formed by partitioning with a partition rib, and the partition rib is locked to the surface of the PTC heating pad 1. The uniformly provided square holes make the heat generation more uniform and generate a small amount of air bubbles. Of course, the holes may have other shapes such as a circle, a triangle, etc., and may be uniformly distributed. The PTC heating pad 1 is designed to automatically turn off at a maximum temperature of 200 ° C.

In the above technical solution, the main body 11 is made of silica gel. Silica gel has moderate flexibility and constant plasticity, but its shape is relatively fixed and the expansion space is extremely limited, so PTC that generates a small amount of air bubbles in the conventional tubular heating member. Improved to heating pad 1. Silica gel is prized because it has moderate flexibility, is comfortable to the touch, lowers the ambient temperature, gives a comfortable feeling to the touch, and increases the motivation to touch without stopping. ..

In the above technical solution, as shown in FIGS. 2 or 3, a long pattern that intersects with each other is formed on the surface of the main body 11 and may be freely pressed.

The assembly process of the electric hot water bottle of the present invention is as follows. First, the mounting base 2 is manufactured, and then the PTC heating pad 1 is mounted on the mounting base 2. Subsequently, the main body 11 is directly injection-molded on the mounting base 2. After molding, the mounting base 2 and the main body 11 cannot be removed, the sealing property is high, and water leakage can be avoided.

In the present invention, a plurality of annular locking slots are provided on the outer periphery of the mounting base 2, and as shown in FIG. 3, a plurality of annular concave grooves corresponding to the injection-molded main body 11 ends are provided inside. , Improves sealing performance. Further, the circuit board, the electric outlet, and the water injection pipe are attached to the circuit board mounting board, and the circuit board is locked in the mounting base 2 via the locking block.

Example 2
As shown in FIG. 5, the electric hot water bottle of the present invention includes a main body 11, a PTC heating pad 1, and a mounting base 2. The inside of the main body is filled with a liquid medium for transferring heat. The total area of the liquid medium expanded or vaporized at a given temperature corresponds to the normal volume of the liquid medium at room temperature. The PTC heating pad 1 is provided in the sealing cavity and is immersed in a liquid medium. The mounting base 2 is hermetically joined to the main body, a part of the mounting base 2 is exposed to the outside of the main body, the rest is sealed in the sealing cavity of the main body, and the PTC heating pad 1 is connected to the mounting base 2. ..

Specifically, the main body 11 includes an outer layer main body and an inner layer main body. The outer layer main body is provided on the outermost layer of the main body, is made of a flexible material, is in close contact with the inner layer main body, and is provided for the human body to touch. The inner layer body is provided in the innermost layer of the body and is made of a flexible watertight material. By sealing the inner layer body, a cavity for storing the liquid medium is formed.

Since the requirements for the outer layer material and the inner layer material of the main body are different, the main body 11 uses a two-layer structure design. By sealing the liquid medium inside the main body with the inner layer main body, it is ensured that the liquid medium in use does not leak.

Specifically, the mounting base 2 includes a mounting jacket, a temperature control unit, and an outlet. The mounting jacket includes an external arrangement portion and an internal arrangement portion, and is hermetically joined to the main body. The external arrangement portion of the mounting jacket is exposed to the outside of the main body, and the internal arrangement portion of the mounting jacket is sealed in the sealing cavity of the main body. The temperature control unit is provided in the internal arrangement portion of the mounting jacket and is connected in parallel to the PTC heating pad 1. The temperature control unit is used to control the opening and closing of the circuit by the internal temperature of the electric hot water bottle. The outlet is attached to the external arrangement portion of the mounting jacket and is exposed to the outside of the main body. The outlet, the temperature control unit, and the PTC heating pad 1 are electrically connected to form a complete circuit.

By applying an electric current to the PTC heating pad 1 through an outlet, the PTC heating pad 1 can be heated to heat the liquid medium, so that the user does not need to heat or replace the liquid medium and operates the pad. Easy and highly practical. Further, since the temperature control unit can control the opening and closing of the circuit by the temperature of the liquid medium, when the liquid medium is heated to a specific temperature, the circuit is automatically shut off, the heating is terminated, and the liquid medium is heated. It is possible to prevent overheating and the safety is extremely high.

As an improvement, the mounting base 2 further includes an indicator light 8. The indicator light 8 is attached to the external arrangement portion of the attachment jacket and is exposed to the outside of the main body. The indicator light 8 is connected in parallel to the PTC heating pad 1. The indicator light 8 allows the user to clearly understand the operating state of the electric hot water bottle.

As an improvement, the liquid medium is water. The PTC heating pad 1 is designed to automatically turn off the power at a maximum temperature of 200 ° C.

The preferred embodiments of the present invention will be described in detail above. It should be understood that one of ordinary skill in the art can make multiple modifications and variants based on the concept of the present invention without spending creative effort. Therefore, it goes without saying that any of the technical solutions obtained by those skilled in the art through logical analysis, reasoning or finite experiment based on the prior art based on the idea of the present invention is included in the scope of protection of the present invention. is there.

1 PTC heating pad, 11 main body, 20 mounting holder, 201 partition rib, 202 holes, 8 indicator light

Claims (8)

An electric hot water bottle with a PTC heating pad
The main body (11) and the mounting base (2) are included, the mounting base (2) and the main body (11) are hermetically joined, and a PTC heating pad (1) is connected to the mounting base (2) to heat the PTC. The electric hot water bottle, characterized in that the pad (1) is located inside the main body (11). The electric hot water bottle according to claim 1, wherein the main body (11) is directly injection-molded on the mounting base (2). The PTC heating pad (1) is arranged in a nested mounting holder (20), and the above-mentioned mounting holder (20) has two sheets having a symmetrical structure and uniform holes (202). It is formed by fitting the mounting holder sheet, the hole (202) is formed by being partitioned by the partition rib (201), and the partition rib is locked to the surface of the PTC heating pad (1). The electric hot water bottle according to claim 2. The electric hot water bottle according to claim 3, wherein the holes (202) uniformly provided in the above-mentioned holder sheet are rectangular. A claim characterized in that a plurality of annular locking slots are provided on the outer periphery of the mounting base (2), and a plurality of annular concave grooves corresponding to the plurality of annular locking slots are provided inside the end portion of the injection-molded main body (11). Item 2. The electric hot water bottle according to item 2. The electric hot water bottle according to claim 5, wherein the main body (11) is made of silica gel. The main body (11) includes an inner layer main body and an outer layer main body, and the outer layer main body is provided on the outermost layer of the main body, is made of a flexible material, is in close contact with the inner layer main body, and is provided for the human body to touch. The inner layer main body is provided in the innermost layer of the main body, is made of a flexible watertight material, and is characterized in that a cavity for storing a liquid medium is formed by sealing the inner layer main body. The electric hot water bottle according to claim 1. The electric hot water bottle according to claim 1, wherein the mounting base (2) further includes an indicator lamp (8) connected in parallel with the PTC heating pad (1).

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