CN216080420U

CN216080420U - PTC electric heating device

Info

Publication number: CN216080420U
Application number: CN202122365664.6U
Authority: CN
Inventors: 李龙文; 贺时贵
Original assignee: Huaian Xinxin Plastic Rubber Product Co ltd
Current assignee: Huaian Xinxin Plastic Rubber Product Co ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-03-18
Anticipated expiration: 2031-09-28

Abstract

The utility model provides a PTC electric heating device, which belongs to the technical field of heaters and comprises a barrel, a sealing cover and a PTC electric heater, wherein the sealing cover is fixed on the PTC electric heater, the PTC electric heater is arranged in the barrel and is fixed with the barrel through the sealing cover, a water inlet pipe and a water outlet pipe are correspondingly formed on the barrel, a mounting hole is formed in the side surface of the barrel close to the water outlet pipe, and a water pressure protection switch is arranged in the mounting hole.

Description

PTC electric heating device

Technical Field

The utility model relates to the technical field of heating, in particular to a PTC electric heating device.

Background

The PTC electric heating device 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 prominent characteristic of safety performance, namely, when a fan stops rotating due to failure, the PTC electric heating device can not fully dissipate heat, the power of the PTC electric heating device can automatically and rapidly drop, 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 can not be caused.

The PTC electric heating device has been widely used in liquid heating products such as bathtubs and SPAs, and with the application of the PTC electric heating device, people have made higher demands on the PTC electric heating device, so there is a need to provide a PTC electric heating device which is easy to install and has a higher safety coefficient.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to solve the defects in the background art, the utility model discloses a PTC electric heating device.

The technical scheme is as follows: the utility model provides a PTC electric heating device, includes barrel, sealed lid and PTC electric heater, sealed lid is fixed on PTC electric heater, PTC electric heater sets up inside the barrel and fixes with the barrel by sealed lid, it has inlet tube and outlet pipe to correspond the shaping on the barrel, the side surface shaping that the barrel is close to the outlet pipe has a mounting hole, just be provided with a water pressure protection switch in the mounting hole.

The utility model realizes the following beneficial effects:

the PTC electric heating device provided by the utility model can be conveniently and quickly assembled and disassembled by operators, and the water pressure protection switch is arranged in the barrel, so that dangerous conditions are avoided during use, the safety coefficient is improved, and the practicability is greatly improved compared with the conventional PTC electric heating device.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic view of the overall structure disclosed in the present invention.

Fig. 2 is a schematic plan view of the PTC electric heater disclosed in the present invention.

Fig. 3 is a schematic perspective view of the PTC electric heater according to the present invention.

Fig. 4 is a schematic view of the bottom structure of the sealing cover disclosed by the utility model.

In the figure: 10. the PTC water heater comprises a cylinder body, a sealing cover 20, a sealing cover 21, an annular groove 30, a PTC electric heater 31, a flange 32, a shell 33, an electrode plate 34, a PTC heating core 35, an inner cavity 36, an opening 40, a water inlet pipe 41, a thread structure 50, a water outlet pipe 50, a mounting hole 60, a water pressure protection switch 70, a stud I80, a stud 90, a screw 100, a stud II 110, a lug I120, a protective cover 130, a lug II 140, a stud III 150, a wiring harness abdicating groove 160 and a sealing ring 160.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Examples

Referring to fig. 1-4, a PTC electric heating device includes a barrel 10, a sealing cover 20 and a PTC electric heater 30, the sealing cover is fixed on the PTC electric heater, the PTC electric heater is disposed in the barrel and fixed with the barrel by the sealing cover, the barrel is correspondingly formed with a water inlet pipe 40 and a water outlet pipe 50, a mounting hole 60 is formed on the side surface of the barrel close to the water outlet pipe, and a water pressure protection switch 70 is disposed in the mounting hole, the PTC electric heater can be started to work normally when the water pressure in the barrel reaches a certain pressure range value, so as to prevent the barrel from being burned without liquid, and avoid causing fire.

In this embodiment, the PTC electric heater includes a flange 31 and a housing 32, the housing is fixedly connected to the flange, in the implementation process, the flange and the housing are preferably fixed by welding, an inner cavity 35 is formed between the flange and the housing, a PTC heating core 34 is installed inside the inner cavity, two electrode plates 33 with different polarities are arranged between the PTC heating core and the inner wall of the housing, and the PTC heating core, the electrode plates and the housing are tightly fitted.

In this embodiment, an insulating sleeve (not shown in the present invention) is filled between the electrode plate and the inner wall of the housing to insulate the housing from the electrode plate, before the PTC heating core electrode plate is tightly fitted with the housing, the insulating sleeve is filled between the electrode plate and the housing, after the filling, the PTC heating core, the electrode plate and the housing are tightly fitted, and an external force is applied to the side surface of the housing to deform the side surface of the housing inward and maintain the deformation, thereby pressing the PTC heating core, the electrode plate and the insulating sleeve to tightly fit them together.

In this embodiment, one end of the cavity penetrates the end face of the flange to form an opening 36 for attaching or detaching the PTC heat generating core and the electrode plate.

In this embodiment, the flange is formed with a plurality of studs 80, and when the flange is fixed with the sealing cover plate, the sealing cover is screwed with a plurality of screws 90 to be connected with the plurality of studs.

In this embodiment, the outer lane shaping of sealed lid has a plurality of earholes 110, and the outer lane cooperation shaping of barrel has a plurality of double-screw bolts 100 two, and when sealed lid was fixed with the barrel, all screwed in a plurality of earholes has screw 90 to be connected with double-screw bolt two, and this kind of mode can realize sealed lid and barrel and carry out quick dismantlement.

In this embodiment, still include the protection casing 120, the shaping has the pencil groove of stepping down 150 on the protection casing, the outer lane shaping of protection casing has two 130 of a plurality of ear holes, the outer edge cooperation shaping of sealed lid has three 140 of a plurality of double-screw bolts, when protection casing and sealed lid are fixed, all twist in two of a plurality of ear holes and have screw 90 and double-screw bolt three to be connected, this kind of mode can realize that protection casing and sealed lid carry out quick dismantlement to the related a plurality of pencil of PTC electric heater can be worn out in the groove of stepping down from the pencil and are in order to realize the circular telegram demand.

In this embodiment, barrel, sealed lid and protection casing are all made by the plastics material to barrel, sealed lid and protection casing are the integrated into one piece structure.

In this embodiment, the sealing cover is formed with an annular groove 21 on the surface thereof, and the sealing ring 160 is installed in the annular groove, when the sealing ring is used, the sealing ring made of rubber is preferably used, which is beneficial to effectively sealing the cylinder body and preventing the liquid injected into the cylinder body from overflowing, but if the sealing rings made of other materials can achieve the same function, the utility model is not limited to the sealing ring made of rubber.

In this embodiment, the outer surface of the water inlet pipe is formed with a threaded structure 41 so as to be conveniently and rapidly assembled and disassembled with the water injection pipeline, thereby improving the installation efficiency.

In the implementation process, pour into liquid into in the inlet tube to the barrel, liquid and shell contact, after the electricity was gone up, the plate electrode gave PTC heating core power supply, made PTC heating core work produce heat, the shell produced PTC heating core heat conduction to liquid in, realized thermal exchange to liquid heating, in the heating process, through water pressure protection switch to the water pressure in the barrel monitor and carry out corresponding protection, the liquid that heats at last is then accessible outlet pipe discharge.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a PTC electric heater unit, its characterized in that includes barrel, sealed lid and PTC electric heater, sealed lid is fixed on PTC electric heater, PTC electric heater sets up inside the barrel and fixes with the barrel by sealed lid, it has inlet tube and outlet pipe to correspond the shaping on the barrel, the side surface shaping that the barrel is close to the outlet pipe has a mounting hole, just be provided with a water pressure protection switch in the mounting hole.

2. A PTC electric heating device according to claim 1, wherein the PTC electric heater comprises a flange and a housing, the housing and the flange are fixedly connected, an inner cavity is formed between the flange and the housing, a PTC heating core is installed in the inner cavity, two electrode plates with different polarities are arranged between the PTC heating core and the inner wall of the housing, and the PTC heating core, the electrode plates and the housing are tightly fitted.

3. A PTC electric heating device according to claim 2, wherein an insulating sheath is filled between the electrode plate and the inner wall of the case to insulate the case from the electrode plate.

4. A PTC electric heating device according to claim 2, wherein one end of the inner cavity penetrates the end face of the flange to form an opening for attaching or detaching the PTC heat generating core and the electrode plate.

5. An electrical PTC heater according to claim 2, wherein a plurality of first studs are formed on said flange, and a plurality of screws are screwed into said sealing cover to connect said plurality of first studs when said flange is fixed to said sealing cover.

6. A PTC electric heating device according to claim 1, characterized in that the outer ring of the sealing cover is formed with a plurality of first ear holes, the outer ring of the barrel is formed with a plurality of second studs, and when the sealing cover is fixed with the barrel, the plurality of first ear holes are screwed with screws to connect with the second studs.

7. A PTC electric heating device according to claim 1, further comprising a protective cover, wherein the protective cover is formed with a wire harness relief groove, the outer ring of the protective cover is formed with a plurality of second ear holes, the outer edge of the sealing cover is formed with a plurality of third studs in a matching manner, and when the protective cover is fixed with the sealing cover, the plurality of second ear holes are screwed with screws to be connected with the third studs.

8. An electrical PTC heating device according to claim 7, wherein the canister, the sealing cap and the protective cap are made of plastic.

9. A PTC electric heating apparatus according to claim 1, wherein the sealing cover has an annular groove formed on its surface, and a sealing ring is fitted in the annular groove.

10. A PTC electrical heating apparatus according to claim 1, wherein the outer surface of the water inlet pipe is formed with a screw structure.