CN211267103U - PTC electric heater - Google Patents

Abstract

The utility model provides a PTC electric heater belongs to heater technical field. The utility model discloses a PTC electrical heating includes flange, shell, the shell with flange fixed connection the shell with form the inner chamber between the flange, install PTC heating core in the inner chamber, PTC heating core with be provided with the plate electrode of two different polarities between the inner wall of shell, heating core the plate electrode and the shell tight fit. The utility model discloses an electric heater compact structure, processing convenience.

Description

PTC electric heater

Technical Field

The utility model relates to a heater technical field, concretely relates to PTC electric heater.

Background

The PTC electric heater is a product heated by the PTC heating element, has good heat conduction and heat dissipation performance, high efficiency, safety and reliability, has small thermal resistance and high heat exchange efficiency, is an automatic constant-temperature and electricity-saving electric heater, and has the great outstanding characteristic of safety performance, namely, when a fan stops due to failure, the power of the PTC electric heater can automatically and rapidly drop because the PTC electric heater cannot fully dissipate heat, and the surface temperature of the heater is maintained at about Curie temperature (generally about 250 ℃), so that the phenomenon of 'red' on the surface of an electric heating tube heater is avoided.

The PTC electric heater is widely applied to liquid heating products such as bathtubs, SPAs and the like at present, and along with the application of the PTC electric heater, people put forward higher requirements on the PTC electric heater, and the PTC electric heater is required to be smaller in size and easier to process.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the embodiment of the utility model provides a PTC electric heater, its compact structure, processing convenience.

An embodiment of the utility model provides a PTC electric heater, including flange, shell, the shell with flange fixed connection the shell with form the inner chamber between the flange, install PTC heating core in the inner chamber, PTC heating core with be provided with the plate electrode of two different polarities between the inner wall of shell, heating core the plate electrode and the shell tight fit.

Optionally, the shell is a cuboid structure with a hollow interior,

the PTC heating core is of a cuboid structure,

the two electrode plates are positioned on two opposite sides of the PTC heating core.

Optionally, the housing is a stainless steel tube.

Optionally, an insulating sleeve is filled between the electrode plate and the inner wall of the housing to insulate the housing from the electrode plate.

Optionally, one end of the inner cavity penetrates through the end face of the flange to form an opening for mounting or dismounting the PTC heating core and the electrode plate.

Optionally, a sealing block is embedded in the opening to seal the opening.

Optionally, the sealing block is a silica gel block, and the silica gel block is embedded into the opening in a compressed state.

Optionally, the housing and the flange are fixed by welding.

Optionally, the housing is made of a plastic material so that the side surfaces of the housing are deformed to the inner side and maintained under the action of external force.

Optionally, the housing includes a plurality of housings, the plurality of housings are respectively fixedly connected to the flange, and each housing and the flange form the inner cavity.

The utility model has the advantages that:

the utility model discloses a PTC electric heater, including flange, shell, the shell with flange fixed connection the shell with form the inner chamber between the flange, install PTC heating core in the inner chamber, PTC heating core with be provided with the plate electrode of two different polarities between the inner wall of shell, heating core the plate electrode and the shell tight fit. The utility model discloses a PTC electric heater compact structure, processing is convenient.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a PTC electric heater according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a perspective of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 1 from another perspective;

fig. 4 is a schematic cross-sectional view of a PTC electric heater according to an embodiment of the present invention;

fig. 5 is a schematic cross-sectional view of a PTC electric heater according to an embodiment of the present invention.

Wherein the correspondence between the reference numbers and the names of the components in fig. 1 to 5 is:

1. a flange; 2. a housing; 3. an inner cavity; 4. a PTC heating core; 5. an electrode plate; 6. and (6) sealing the block.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Fig. 1 shows the utility model relates to a structural schematic diagram of the PTC electric heater of an embodiment, fig. 2 shows the cross-sectional schematic diagram at a visual angle in fig. 1, fig. 3 shows the cross-sectional schematic diagram at another visual angle in fig. 1, refer to fig. 1 to 3, the embodiment of the utility model provides a PTC electric heater, including flange 1, shell 2, flange 1 and 2 fixed connection of shell form inner chamber 3 between flange 1 and shell 2, install PTC heating core 4 in the inner chamber 3, PTC heating core 4 and shell 2's the inner wall between be equipped with the electrode board 5 of two different polarities, PTC heating core 4, electrode board 5 and shell 2 tight fit. Wherein, PTC heating core 4 is used for producing the heat, and plate electrode 5 is used for heating core 4 for PTC and provides the power, makes PTC heating core 4 work, and shell 2 is used for heating core 4, plate electrode 5 with PTC and external environment isolated, and PTC heating core 4, plate electrode 5, shell 2 are in the same place through the tight fit fastening, the utility model discloses a PTC electric heater compact structure, processing convenience, low in manufacturing cost.

When the PTC heating device is used, particularly when liquid is heated, the PTC electric heater is placed in a container with a liquid inlet and a liquid outlet and is supported on the surface of the container through a flange 1, flowing liquid is filled in the container and is in contact with a shell 2, after the PTC heating core 4 is powered on, an electrode plate 5 supplies power to the PTC heating core 4, so that the PTC heating core 4 works to generate heat, and the shell 2 conducts the heat generated by the PTC heating core 4 to the liquid, so that heat exchange is realized, and the liquid is heated.

Optionally, the housing 2 is a hollow cuboid structure, the PTC heating core 4 is also a cuboid structure, and the size of the PTC heating core 4 is smaller than that of the housing 2, so that the PTC heating core 4 can be installed inside the housing 2, and the two electrode plates 5 with different polarities are arranged on two opposite sides of the PTC heating core 4. Alternatively, the inner cavity 3 is a hollow portion of the housing 2 and a portion defined by an end of the flange 1.

In the embodiment of the present invention, the housing 2 is further used for transferring the heat generated by the PTC heat generating core 4 to the outside to realize heat exchange, therefore, the housing 2 is preferably made of a good heat conducting material, such as metal, optionally, in an embodiment, the housing 2 is a stainless steel tube. When the utility model discloses when PTC electric heater used in fields such as bathtub, SPA, shell 2 often soaked in water, and nonrust steel pipe has excellent corrosion resistance, oxidation resistance, and the incrustation scale is not produced on the surface of rivers through nonrust steel pipe, consequently, can keep the stability of quality of water, guarantees the clean of user's water, and simultaneously, nonrust steel pipe still has good heat conductivity, can guarantee the efficiency of heat exchange.

In one embodiment, the housing 2 is made of plastic material, so that the side surface of the housing 2 can generate and maintain deformation to the inner side when being applied with external force, thereby maintaining the fastening of the PTC heat generating core 4, the electrode plate 5 and the housing 2.

Optionally, the housing 2 is a stainless steel tube made of stainless steel 304, the stainless steel 304 not only has heat conduction and corrosion resistance of the stainless steel, but also has plastic deformation characteristics, so that the PTC electric heater can be guaranteed to have good heating performance and stability of water quality, and the housing 2 can be deformed inward and kept by acting on the side surface of the housing 2 through external force, so as to press the PTC heating core 4 and the electrode plate 5, so that the PTC heating core 4, the electrode plate 5 and the housing 2 are kept fastened. Optionally, the side wall of the housing 2 is of a thin plate structure to reduce the difficulty of deformation caused by stress.

In one embodiment, the electrode plate 5 and the inner wall of the housing 2 are filled with an insulating sleeve (not shown) for insulating the electrode plate 5 from the housing 2. Optionally, before the PTC heating core 4 and the electrode plate 5 are tightly fitted with the housing 2, the insulating sleeve is filled between the electrode plate 5 and the housing 2, and after the filling is completed, the PTC heating core 4 and the electrode plate 5 are tightly fitted with the housing 2, and an external force is applied to the side surface of the housing 2 as described above, so that the side surface of the housing 2 is deformed inward and maintains the deformation, thereby pressing the PTC heating core 4, the electrode plate 5 and the insulating sleeve to tightly fit together.

In one embodiment, the housing 2 is fixed to the flange 1 by welding, and optionally, the housing 2 is a stainless steel pipe, the flange 1 is a stainless steel disk, and one end of the housing 2 is fixed to the end face of the flange 1 by welding.

In one embodiment, one end of the inner cavity 3 penetrates through the end face of the flange 1 to form an opening for mounting or dismounting the PTC heating core 4, the electrode plate 5 or the PTC heating core 4, the electrode plate 5 and the insulating sleeve.

Optionally, a sealing block 6 is embedded in the opening, and the sealing block 6 is used for sealing the opening and keeping the interior of the inner cavity 3 closed.

Optionally, the sealing block 6 is a silicone block, wherein the silicone block is embedded into the opening in a compressed state, so that the silicone block fills and sews a gap between the silicone block and the opening under the action of elastic deformation of the silicone block, thereby ensuring good sealing.

Referring to fig. 1 to 3, in the embodiment of the utility model, shell 2 includes two, two shells 2 respectively with flange 1 fixed connection, two shells 2 respectively with flange 1 between form inner chamber 3, install PTC heating core 4, plate electrode 5, insulating cover in inner chamber 3 to with PTC heating core 4, plate electrode 5, insulating cover and shell 2 tight fit, the tip of every inner chamber 3 is equipped with the opening that runs through flange 1, the opening part inlays and is equipped with sealing block 6, seal the opening through sealing block 6.

In different embodiments, as shown in fig. 4, the housing 2 includes one, the housing 2 is fixedly connected with the flange 1, an inner cavity 3 is formed between the housing 2 and the flange 1, the PTC heating core 4, the electrode plate 5 and the insulating sleeve are installed in the inner cavity 3, the PTC heating core 4, the electrode plate 5 and the insulating sleeve are tightly fitted with the housing 2, an opening penetrating through the flange 1 is arranged at an end of the inner cavity 3, a sealing block 6 is embedded in the opening, and the opening is sealed by the sealing block 6. In a different embodiment, as shown in fig. 5, the structure of the PTC electric heater is substantially the same as that of the PTC electric heater shown in fig. 1 to 3, except that three housings 2 are included, the three housings 2 are respectively and fixedly connected to a flange 1, and an inner cavity 3 is formed between each housing 2 and the flange 1, so that a PTC heating core 4, an electrode plate 5 and an insulating sleeve can be installed in each of the plurality of inner cavities 3. Of course, in other different embodiments, the flange 1 can also be connected with a larger number of shells 2, and an inner cavity 3 is formed between each shell 2 to form a heating structure, so that the heating rate of the PTC electric heater is improved.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. The utility model provides a PTC electric heater, its characterized in that, includes flange, shell, the shell with flange fixed connection the shell with form the inner chamber between the flange, install PTC heating core in the inner chamber, PTC heating core with be provided with the plate electrode of two different polarities between the inner wall of shell, heating core the plate electrode and the shell tight fit.

2. PTC electric heater according to claim 1,

the shell is of a cuboid structure with a hollow interior,

the PTC heating core is of a cuboid structure,

the two electrode plates are positioned on two opposite sides of the PTC heating core.

3. The PTC electric heater according to claim 1, wherein the housing is a stainless steel tube.

4. The PTC electric heater according to claim 1, wherein an insulating sheath is filled between the electrode plate and an inner wall of the case to insulate the case from the electrode plate.

5. The PTC electric heater according to claim 1, wherein one end of the cavity penetrates an end surface of the flange to form an opening for mounting or dismounting the PTC heat generating core and the electrode plate.

6. The PTC electric heater according to claim 5, wherein a sealing block is inserted into the opening for sealing the opening.

7. The PTC electric heater according to claim 6, wherein the sealing block is a silicone block that is inserted into the opening in a compressed state.

8. The PTC electric heater according to claim 1, wherein the housing and the flange are fixed by welding.

9. The PTC electric heater according to claim 1, wherein the housing is made of a plastic material so that the side surfaces of the housing are deformed to the inside and maintained by an external force.

10. The PTC electric heater according to any one of claims 1 to 9, wherein the housing includes a plurality of housings, the plurality of housings being fixedly connected to the flanges, respectively, each of the housings and the flanges forming the inner chamber.

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