CN219346772U

CN219346772U - Improved PTC water heater

Info

Publication number: CN219346772U
Application number: CN202320863637.8U
Authority: CN
Inventors: 徐伟; 付梅燕; 冯卫
Original assignee: Shanghai Pake Thermistor Ceramics Co ltd
Current assignee: Shanghai Pake Thermistor Ceramics Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-07-14
Anticipated expiration: 2033-04-18

Abstract

The improved PTC water heater comprises a tubular shell, wherein openings are formed in two ends of the shell in the axial direction, a first cover plate is arranged at the first end of the shell, a heating device is arranged on the first cover plate, a second cover plate is arranged at the second end of the shell, a first through hole is formed in the second cover plate, and a flow dividing device is arranged on the second cover plate; the heating device comprises a plurality of heating cores, the front end of any one heating core penetrates through the outer side of the first cover plate and stretches into the shell, and the heating cores are uniformly arranged along the circumferential direction. The beneficial effects are that: the heat exchange efficiency between the heating core body and the medium is improved.

Description

Improved PTC water heater

Technical Field

The present utility model relates to the field of physics, and more particularly to a heating device, and in particular to an improved PTC water heater.

Background

The PTC water heater can heat the medium such as water, heat conducting oil and the like. In recent years, the technology of heating the PTC ceramic sheet has been rapidly developed, and many heater products made of the PTC ceramic sheet are appeared in the market. In the prior art, the basic structure of the PTC heater is that a PTC heating core is plugged into an aluminum alloy casting with a wedge-shaped deep groove, and then the aluminum alloy casting is placed into a liquid circulation chamber. However, in such a manner, the heat energy of the PTC heating core is transferred to the aluminum alloy casting, and then the aluminum alloy casting transfers the heat to the surrounding heating medium, and since most of the surface of the aluminum alloy casting except the structure where the heating core is installed is in direct contact with the air, the heat is directly emitted into the air, resulting in serious heat loss, and the heat of the PTC heater cannot be transferred to the heating medium with high efficiency.

Disclosure of Invention

The present utility model aims to provide an improved PTC water heater which solves the technical problem of loss in heat conduction of the PTC heater in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions:

the improved PTC water heater comprises a tubular shell, wherein openings are formed in two ends of the shell in the axial direction, a first cover plate is arranged at the first end of the shell, a heating device is arranged on the first cover plate, a second cover plate is arranged at the second end of the shell, a first through hole is formed in the second cover plate, and a flow dividing device is arranged on the second cover plate; the heating device comprises a plurality of heating cores, the front end of any one heating core penetrates through the outer side of the first cover plate and stretches into the shell, and the heating cores are uniformly arranged along the circumferential direction.

Further, the shunt device comprises a shunt tube, the shunt tube is arranged on the inner side of the second cover plate, the inner end of the shunt tube is closed, the outer end of the shunt tube is communicated with the first through hole, a plurality of shunt holes are formed in the tube wall and the inner end face of the shunt tube, and the shunt tube and the first through hole are coaxially arranged.

Or, the flow dividing device comprises a flow dividing plate, the flow dividing plate is arranged on the inner side of the second cover plate, a second through hole is formed in the flow dividing plate, the aperture of the second through hole is smaller than that of the first through hole, the second through hole and the first through hole are coaxially arranged, a plurality of flow dividing grooves are formed in the flow dividing plate in the circumferential direction, the inner end of any one flow dividing groove is communicated with the second through hole, and the outer end of any one flow dividing groove is communicated with the inner cavity of the shell.

Further, the shell is also provided with a water passing hole.

Further, the outer side of the first cover plate is provided with a cover shell, the cover shell is provided with a water passing hole, the first cover plate is provided with a fourth through hole, and a water passing pipe is arranged between the water passing hole and the fourth through hole.

Working principle:

the heat generated by the heating core body is transferred to the medium through an intermediary in the heat transfer mode of the traditional PTC heater, besides the certain heat loss of the medium, some heat can be emitted to the air through the surface of the medium.

Compared with the prior art, the utility model has the beneficial effects that: the heat exchange efficiency between the heating core body and the medium is improved.

Drawings

Fig. 1 is a schematic view showing the structure of an improved PTC water heater according to the present utility model.

Fig. 2 is an exploded schematic view of an improved PTC water heater of the present utility model.

Fig. 3 is a schematic medium flow diagram of an improved PTC water heater of the present utility model.

Fig. 4 is a schematic view of another water passing hole of an improved PTC water heater of the present utility model.

Fig. 5 is a schematic view of a shunt tube structure of an improved PTC water heater according to the present utility model.

Fig. 6 is a schematic view of the structure of a diverter plate of an improved PTC water heater according to the present utility model.

Detailed Description

Example 1

Referring to fig. 1, 2, 3, 4 and 5, the present utility model provides a technical solution:

an improved PTC water heater comprises a tubular shell 1, wherein two ends of the shell 1 in the axial direction are both openings, a first cover plate 2 is arranged at the first end of the shell 1, a heating device is arranged on the first cover plate 2, a second cover plate 3 is arranged at the second end of the shell 1, a first through hole is formed in the second cover plate 3, and a flow dividing device is arranged on the second cover plate 3; the heating device comprises a plurality of heating cores, the front end of any one heating core penetrates through the outer side of the first cover plate 2 and stretches into the shell 1, and the heating cores are uniformly arranged along the circumferential direction.

Further, the shunt device comprises a shunt tube 4, the shunt tube 4 is arranged on the inner side of the second cover plate 3, the inner end of the shunt tube 4 is closed, the outer end of the shunt tube 4 is communicated with the first through hole, a plurality of shunt holes 5 are formed in the tube wall and the inner end face of the shunt tube 4, and the shunt tube 4 and the first through hole are coaxially arranged.

Further, the shell 1 is also provided with a water passing hole.

Further, a cover shell 9 is arranged on the outer side of the first cover plate 2, a water passing hole is formed in the cover shell 9, a fourth through hole is formed in the first cover plate 2, and a water passing pipe is arranged between the water passing hole and the fourth through hole.

Example 2

Referring to fig. 1, 2, 3, 4 and 6, the present utility model provides a technical solution:

Further, the flow dividing device comprises a flow dividing plate 6, the flow dividing plate 6 is arranged on the inner side of the second cover plate 3, a second through hole 7 is formed in the flow dividing plate 6, the aperture of the second through hole 7 is smaller than that of the first through hole, the second through hole 7 and the first through hole are coaxially arranged, a plurality of flow dividing grooves 8 are formed in the flow dividing plate 6 along the circumferential direction, the inner end of any one flow dividing groove 8 is communicated with the second through hole 7, and the outer end of any one flow dividing groove 8 is communicated with the inner cavity of the shell 1.

Further, the shell 1 is also provided with a water passing hole.

Specifically, the first through hole is used as the water inlet, and the outside is provided with flange.

In particular, the heating core may be a cylinder or a cuboid.

Specifically, the water passing hole is arranged on the side wall of the shell 1 or at one end of the shell as a water outlet, and a connecting flange is arranged outside the water passing hole.

Specifically, the circuit connection mode of the heating core body is in the prior art, and is not described herein. The working process comprises the following steps:

example 1 is a case 1 in which a shunt tube is used for shunt, and example 2 is a case 1 in which a shunt plate is used for shunt.

As shown in fig. 3, the connecting flange outside the first through hole is communicated with the pipeline at the water inlet end, the connecting flange outside the water passing hole is communicated with the pipeline at the water outlet end, medium water enters the shell from the pipeline at the water inlet end through the first through hole, a part of water is spread outwards along the circumferential direction through the split holes on the split pipes or the split grooves on the split plates, another part of water enters the shell from the inner ends of the split pipes or the through holes in the middle of the split plates, a plurality of heating cores are inwards stretched into at the other end of the shell, a large amount of heat is generated after the medium water is electrified, the medium water takes away the heat and flows to the water passing holes when flowing through the heating cores, and the medium water leaves the shell from the water passing holes and enters the next area through the connecting flange.

The heating core is directly placed in the liquid, and heat radiation from any angle can be taken away by the liquid flowing at high speed, so that the heat efficiency is extremely high. The diversion device is added, after fluid is forced to enter the shell, the fluid flows to the periphery, so that the heat of the heating core side can be fully taken away by the liquid, and the PTC power effect is improved.

Claims

1. An improved PTC water heater comprising a tubular housing (1) open at both ends in the axial direction of said housing (1), characterized in that: the device comprises a shell (1), wherein a first cover plate (2) is arranged at the first end of the shell (1), a heating device is arranged on the first cover plate (2), a second cover plate (3) is arranged at the second end of the shell (1), a first through hole is formed in the second cover plate (3), and a flow dividing device is arranged on the second cover plate (3); the heating device comprises a plurality of heating cores, the front end of any one heating core penetrates through the outer side of the first cover plate (2) and stretches into the shell (1), and the heating cores are uniformly arranged along the circumferential direction.

2. An improved PTC water heater according to claim 1 wherein: the shunt device comprises a shunt tube (4), the shunt tube (4) is arranged on the inner side of the second cover plate (3), the inner end of the shunt tube (4) is closed, the outer end of the shunt tube (4) is communicated with the first through hole, a plurality of shunt holes (5) are formed in the tube wall and the inner end face of the shunt tube (4), and the shunt tube (4) and the first through hole are coaxially arranged.

3. An improved PTC water heater according to claim 1 wherein: the flow dividing device comprises a flow dividing plate (6), wherein the flow dividing plate (6) is arranged on the inner side of the second cover plate (3), a second through hole (7) is formed in the flow dividing plate (6), the aperture of the second through hole (7) is smaller than that of the first through hole, the second through hole (7) and the first through hole are coaxially arranged, a plurality of flow dividing grooves (8) are formed in the flow dividing plate (6) along the circumferential direction, the inner end of any one flow dividing groove (8) is communicated with the second through hole (7), and the outer end of any one flow dividing groove (8) is communicated with the inner cavity of the shell (1).

4. An improved PTC water heater according to claim 1 wherein: the shell (1) is also provided with a water passing hole.

5. An improved PTC water heater according to claim 1 wherein: the outer side of the first cover plate (2) is provided with a cover shell (9), the cover shell (9) is provided with a water passing hole, the first cover plate (2) is provided with a fourth through hole, and a water passing pipe is arranged between the water passing hole and the fourth through hole.