CN219015095U

CN219015095U - PTC radiator with graphene coating and warm air blower

Info

Publication number: CN219015095U
Application number: CN202221261559.6U
Authority: CN
Inventors: 张志强; 李树谦; 吴金花
Original assignee: Ningbo Baogong Electrical Appliance Co ltd
Current assignee: Ningbo Baogong Electrical Appliance Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2023-05-12
Anticipated expiration: 2032-05-24

Abstract

The utility model discloses a PTC radiator (10) with graphene coating and a warm air blower, wherein the PTC radiator comprises: the metal substrate (11), the PTC heating element (12), the inner radiating fins (13) and the outer radiating fins (14) are annular, and a graphene coating is formed on the surface of the metal substrate; the PTC heating element (12) is annular, the PTC heating element (12) is arranged on the metal substrate, the inner radiating fins (13) are arranged along the inner circumference of the annular metal substrate (11), and the outer radiating fins (14) are arranged along the outer circumference of the annular metal substrate (11). Through arranging the circular PTC radiator with the graphene coating, the heating element is matched with the size of a common air duct in the market, so that the flowing dead zone is reduced; and the heat transfer efficiency of the PTC heating element is enhanced by arranging the inner and outer radiating fins of the high-emissivity graphene coating.

Description

PTC radiator with graphene coating and warm air blower

Technical Field

The utility model relates to the technical field of warm air blowers, in particular to a PTC radiator with a graphene coating and a warm air blower comprising the PTC radiator.

Background

The warm air blower is mainly used for household heating or industrial heating, is mainly used for cultivation heating, building site heating, workshop heating, road and bridge drying, construction site heating and the like in the industrial field, and has extremely wide application range. The conventional electric fan heater based on the resistance heating element in the market has larger improvement space in the aspects of heat efficiency, temperature rising speed and the like. In addition, although PTC (positive temperature coefficient) heating elements have been recently reported to be applied to the field of warm air heaters, it is considered that the heat radiation material of PTC heating elements is mostly aluminum, and the emissivity thereof is not high, which affects the heat radiation effect. In addition, most of the PTC heat dissipation elements commonly found on the market are rectangular structures, which are installed in the cylindrical air duct of the fan heater to easily cause a dead zone of flow and thus create additional resistance.

Accordingly, new techniques and apparatus are needed to at least partially address the problems with the prior art described above.

Disclosure of Invention

Aiming at the problems, the utility model provides a novel PTC heating element and a warm air blower based on the heating element, so that PTC heat dissipation efficiency and heat performance of the warm air blower are better improved.

According to an aspect of the present utility model, there is provided a PTC radiator having a graphene plating layer, including: a metal substrate (11), a PTC heating element (12), an inner heat radiating fin (13), and an outer heat radiating fin (14);

wherein the metal substrate (11) is annular, and a graphene coating is formed on the surface of the metal substrate; the PTC heating element (12) is annular, the PTC heating element (12) is arranged on the metal substrate, the inner radiating fins (13) are arranged along the inner circumference of the annular metal substrate (11), and the outer radiating fins (14) are arranged along the outer circumference of the annular metal substrate (11).

Preferably, graphene plating layers are formed on surfaces of the inner heat radiating fins (13) and the outer heat radiating fins (14).

Preferably, the metal base plate (11), the inner radiating fins (13) and the outer radiating fins (14) are made of aluminum, copper or aluminum alloy materials.

Preferably, an annular cavity is provided inside the metal base plate (11), in which the PTC heating element (12) is arranged.

Preferably, the inner radiating fins (13) and the outer radiating fins (14) are of a flat square structure.

According to another aspect of the utility model, a warm air blower is provided, comprising a PTC radiator, an air duct (20) and a fan (30), wherein the PTC radiator (10) is arranged on one side of the interior of the air duct (20), and the fan (30) is arranged on the other side of the interior of the air duct (20) to supply air for the PTC radiator (10).

Preferably, an air interlayer (21) is formed on the pipeline wall of the air duct (20).

Preferably, the fan heater further comprises a power terminal (40) and a wind speed regulator (50) which are arranged on the outer wall of the air duct (20), the power terminal (40) is electrically connected with the PTC radiator (10), and the wind speed regulator (50) is electrically connected with the fan (30).

Preferably, the warm air blower further comprises a handle (60) arranged on the upper side of the outer wall of the air duct (20) and a support (70) arranged on the bottom side of the outer wall.

Preferably, the PTC radiator (10), the air duct (20) and the fan (30) have a circular structure.

Compared with the prior art, the utility model has the beneficial effects that:

(1) Different from square PTC heat dissipation elements used in the existing PTC warm air blower in the market, the utility model adopts the circular PTC heat dissipation elements which are matched with the shape and the size of the cylindrical air duct, thereby obviously reducing the dead zone of air flow and being beneficial to the uniform heat dissipation of the warm air blower;

(2) By depositing the nano graphene coating with high emissivity on the surfaces of the inner radiating fins, the outer radiating fins and the metal substrate, the radiation heat transfer is obviously enhanced, and the thermal performance of the PTC radiating element is improved;

(3) Compared with the traditional square PTC heating element which is applied more on the market, the utility model provides the PTC heat dissipation element with the nano graphene coating, which is applicable to the cylindrical air duct.

The above, as well as additional objectives, advantages, and features of the present utility model will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present utility model when read in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. The objects and features of the present utility model will become more apparent in view of the following description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic diagram of a warm-air drier according to an embodiment of the utility model; and

fig. 2 is a schematic top and side view of a PTC heatsink with graphene plating according to an embodiment of the present utility model;

in the figure: 10-a PTC radiator with graphene coating, 11-a metal substrate, 12-a PTC heating element, 13-an inner radiating fin and 14-an outer radiating fin; 20-air duct, 21-air interlayer, 30-fan, 40-power terminal, 50-wind speed regulator, 60-handle, 70-support.

Detailed Description

The following detailed description of the utility model is, therefore, not to be taken in a limiting sense, and is set forth in the appended drawings.

Referring to fig. 2, the PTC heatsink with graphene plating of the present embodiment may include a metal base plate 11, a PTC heating element 12, inner heat-dissipating fins 13, and outer heat-dissipating fins 14.

The metal substrate is circular, and can be made of aluminum, copper or aluminum alloy materials, for example. And a graphene plating layer may be formed on the surface of the metal substrate to enhance heat conduction and heat dissipation properties thereof.

The PTC heating element 12 is ring-shaped and is provided on the metal substrate 11. As shown, the circular PTC heating element 12 may be fixed to the metal substrate by adhesion. An annular cavity, such as an annular cavity, may also be formed in the metal substrate, and the PTC heating elements 12 may be fixedly disposed in the cavity, thereby enhancing stability and thermal conductivity.

Inner heat radiating fins 13 and outer heat radiating fins 14 are formed on the inner circumference and the outer circumference of the annular metal base plate, respectively. As shown, the inner heat radiating fins 13 and the outer heat radiating fins 14 may have a flat square structure, and the inner heat radiating fins 13 are connected in a grid shape along the inner circumference; the outer heat radiating fins 14 may be uniformly disposed on the outer circumference so that the heat sink is circular in shape as a whole. The inner and outer

heat radiating fins

13 and 14 may be made of aluminum, copper, or an aluminum alloy material, and graphene plating layers may be formed on surfaces of the inner and outer heat radiating fins 13 and 14, thereby enhancing thermal conductivity.

Referring to fig. 1, an embodiment of a fan heater including a PTC radiator having a graphene coating may include an air duct 20, an air interlayer 21 provided at an inner side of the air duct 20, a power terminal 40 and a wind speed regulator 50 provided at one side of an outer upper portion of the air duct 20, and a handle 60 provided at the other side of the outer upper portion of the air duct 20; a PTC radiator 10 with a graphene coating is arranged on one side of the inside of the air duct 20, and a fan 30 is arranged on the other side of the inside of the air duct 20 to supply air for the radiator; the arrangement of the radiator and the fan in the air duct 20 has no special requirement, and only needs to be fixed in the pipeline for normal operation; wherein the power terminal 40 is electrically connected to the PTC radiator 10, and the wind speed regulator 50 is electrically connected to the fan 30. In addition, a support 70 may be provided at the outer bottom side of the air duct 20.

The working principle of the utility model is as follows: before the fan heater is used, the fan heater power terminal 40 is connected first, the air interlayer 21 is arranged in the fan heater air duct to insulate heat, the power terminal 40 and the air speed regulator 50 are reduced from being heated frequently, and the service life is prolonged. The PTC radiator 10 having the graphene coating inside the warm air blower is heated by controlling the power terminal 40, and simultaneously, the related parameters of the wind speed regulator 50 are set such that the fan 30 introduces air into the air duct 20 and discharges the air after being heated by the PTC radiator 10 having the graphene coating. A handle 60 arranged on one side of the upper part of the outer side of the fan heater air duct 20 provides convenience for moving and transporting the fan heater.

Since the PTC radiator 10 having the graphene coating is connected to the power terminal 40, when the power terminal 40 is connected to an external power source, the annular PTC heating element 12 included in the PTC radiator 10 having the graphene coating starts to heat, and then transfers heat to the metal substrate 11 and the inner and outer heat dissipation fins 13 and 14; in addition, the surfaces of the metal substrate 11 and the inner and outer radiating fins are provided with graphene coatings with high emissivity, so that the heat transfer efficiency of the original metal structure can be improved. In addition, the PTC radiator 10 with the graphene coating is of a circular structure and is matched with the structure and the size of a cylindrical fan heater air channel, so that the flowing dead zone is reduced, and the reinforced heat exchange is realized.

The foregoing has outlined some of the more detailed description of the embodiments of the present utility model, wherein specific examples are provided to illustrate the principles and embodiments of the present utility model, and wherein the above description of the embodiments is only for the purpose of facilitating the understanding of the principles of the embodiments of the present utility model; while various changes in the specific embodiments and applications may be made by those skilled in the art in light of the present teachings, this description is not to be construed as limiting the utility model.

Claims

1. A PTC heatsink with graphene plating, comprising:

a metal substrate (11), a PTC heating element (12), an inner heat radiating fin (13), and an outer heat radiating fin (14);

2. PTC radiator with graphene coating according to claim 1, characterized in that the inner radiating fins (13) and the outer radiating fins (14) have graphene coating formed on their surface.

3. PTC radiator with graphene coating according to claim 1, characterized in that the metal base plate (11), the inner heat-dissipating fins (13) and the outer heat-dissipating fins (14) are made of aluminium, copper or aluminium alloy material.

4. PTC radiator with graphene coating according to claim 1, characterized in that the metal substrate (11) is internally provided with an annular cavity in which the PTC heating element (12) is arranged.

5. PTC radiator with graphene coating according to claim 1, characterized in that the inner radiating fins (13) and the outer radiating fins (14) are of flat square structure.

6. A fan heater comprising a PTC heat sink according to any of claims 1-5, wherein: further comprises: the air conditioner comprises an air duct (20) and a fan (30), wherein the PTC radiator (10) is arranged on one side of the inside of the air duct (20), and the fan (30) is arranged on the other side of the inside of the air duct (20) and supplies air for the PTC radiator (10).

7. A fan heater according to claim 6, characterized in that an air interlayer (21) is formed on the duct wall of the air duct (20).

8. The warm-air drier according to claim 6, further comprising a power terminal (40) provided on an outer wall of the air duct (20), the power terminal (40) being electrically connected to the PTC radiator (10), and a wind speed regulator (50) being electrically connected to the fan (30).

9. A fan heater according to claim 6, further comprising a handle (60) provided on the upper side of the outer wall of the air duct (20) and a support (70) on the bottom side of the outer wall.

10. A fan heater according to claim 6, wherein the PTC radiator (10), the air duct (20) and the fan (30) each have a circular structure.