Convection heater

Abstract

The utility model relates to a convection type warmer, including casing and heating body, the casing includes the heating body groove for containing the heating body and is used for the full mixing of hot air and is stacked ring wing convection air duct, this convection air duct sets up at the top of heating body groove and communicates with it, the wallboard of convection air duct both sides has respectively a plurality of outward along the airflow direction namely longitudinal stacking arc convex strip, the top of convection air duct sets the air outlet, the bottom of heating body groove sets the air inlet, the casing is aluminium alloy. The structure of stacked ring wing convection air duct makes hot and cold air mix fully, realizes high -efficient heat transfer through longitudinal heat conduction and transverse radiation double channel, realizes fast and even heating, realizes shell body heating even, the air outlet is not hot, and the comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of heating technology, and in particular to a heating device that raises indoor temperature by heating air and utilizing the natural convection circulation of air. Background Technology

[0002] The working principle of a convection heating device is as follows: When an electric heating element is energized, heat is generated. Cold air enters from the bottom, is heated, becomes lighter, and rises. Hot air is expelled from the top, and cold air continuously replenishes the heating element, creating a circulation that gradually warms the entire room. Traditional baseboard heaters often use iron casings, which have poor thermal conductivity, are prone to rust, have low thermal efficiency, and uneven heat distribution. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to propose a convection heater that optimizes airflow distribution and enhances heat exchange, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: A convection heater is provided, comprising a housing and a heating element. The housing includes a heating element slot for accommodating the heating element and a stacked annular convection duct for fully mixing hot air. The convection duct is disposed above and communicates with the heating element slot. The wall panels on both sides of the convection duct each have a plurality of outwardly stacked arc-shaped protrusions along the airflow direction, i.e., longitudinally. An air outlet is provided above the convection duct, and an air inlet is provided below the heating element slot. The housing is made of aluminum alloy.

[0005] Furthermore: It also includes a top cover above the convection duct and a bottom plate below the heating element slot. The top cover, bottom plate, wall panels of the convection duct, and side panels of the heating element slot are all made of aluminum profiles. The top cover and the wall panels of the convection duct, the wall panels of the convection duct and the side panels of the heating element slot, and the side panels and bottom plate of the heating element slot are all connected by transverse ribs and grooves. The wall panels on both sides of the convection duct and the side panels on both sides of the heating element slot combine to form the side walls of the convection heater.

[0006] The wall panels on both sides of the convection duct each consist of two pieces, upper and lower, connected by transverse ribs and grooves. One piece has three longitudinally stacked arc-shaped protrusions, and the other piece has two longitudinally stacked arc-shaped protrusions.

[0007] The wall panels on both sides of the convection duct consist of three parts: upper, middle, and lower. Adjacent parts are connected by transverse ribs and grooves. Two of the parts have three longitudinally stacked arc-shaped protrusions, and the other part has two longitudinally stacked arc-shaped protrusions.

[0008] It also includes left and right support members for the convection duct and heater end plate. After the left and right support members are fixed at the left and right ends of the convection duct, the heater end plate covers the left and right ends of the convection duct and the heating element slot together.

[0009] The left and right support members and the heater end plate are all made of aluminum profiles.

[0010] The air inlet is located on the base plate, the air outlet is located on the top cover, and the top cover is embedded with a humidifying container.

[0011] The heating element includes a stainless steel heating tube and a plurality of aluminum alloy fins connected in series on the heating tube, and the surface of the aluminum alloy fins is coated with a graphene heat-dissipating coating.

[0012] The heating element slot has a heating element support at one end and a circuit board support at the other end. The heating element is arranged horizontally, with one end fixed to the heating element support and the other end fixed to the circuit board support.

[0013] A support is provided between the heating element and the base plate below the heating element slot.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The layered ring-shaped convection air duct structure allows for thorough mixing of hot and cold air. Through the dual channels of longitudinal heat conduction and lateral radiation, efficient heat transfer is achieved, resulting in rapid and uniform heating. This ensures uniform heating throughout the outer shell, prevents the air outlet from becoming hot, and enhances comfort.

[0015] The aluminum alloy heat-dissipating shell and aluminum alloy fins enable infrared radiation heating within a 1-meter radius of the heater. The aluminum alloy fins are coated with a graphene heat-dissipating coating, reducing power load and extending service life.

[0016] The heater is suitable for environments with temperatures around 0°C, high humidity, no centralized heating, and where air conditioner outdoor units are prone to frost buildup. Attached Figure Description

[0017] Figure 1 This is an exploded view of an embodiment of the convection heater of this utility model; Figure 2 This is a longitudinal sectional view of an embodiment of the convection heater of this utility model, showing the connection structure of the outer shell side plate; Figure 3 This is another exploded view of an embodiment of the convection heater of this utility model, showing the connection structure of the end plate; Figure 4 This is a schematic diagram of the cross-sectional structure with airflow direction in the working state of an embodiment of the convection heater of this utility model; Figure 5This is a schematic diagram of the longitudinal cross-sectional structure with airflow direction in the working state of an embodiment of the convection heater of this utility model. Figure 6 This is a front view of an embodiment of the convection heater of this utility model. Detailed Implementation

[0018] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] The convection heater of this utility model, such as Figures 1 to 6 As shown, its overall structure adopts an all-aluminum alloy heat-equalizing shell with uniform surface temperature and a thermal conductivity of 237W / m·K. It includes components such as heating element slot 100, aluminum heating element 200, stacked ring wing convection air duct 300, top cover 401, bottom plate 402, left and right support parts 501, end plate 502 and shell bracket 900.

[0020] The heating element slot 100 is located at the bottom of the heater and is composed of an aluminum alloy side plate 101. A series of aluminum heating elements 200 are arranged horizontally inside the slot. The heating element 200 includes a stainless steel long-life heating tube 201, on which multiple aluminum alloy fins 202 are connected in series. The surface of the fins is coated with a graphene heat-dissipating coating to enhance heat conduction efficiency and heat dissipation performance.

[0021] The heating element slot 100 has a heating element support 600 at one end and a circuit board support 700 at the other end. The heating element 200 is arranged horizontally, with one end fixed to the heating element support 600 and the other end fixed to the circuit board support 700. A support member 403 is provided between the heating element 200 and the base plate 402 to ensure structural stability. The power board 701, the control circuit board 702, and the control panel 703 are mounted on the circuit board support 700.

[0022] The stacked annular wing convection duct 300 is located above and communicates with the heating element slot 101, and is composed of aluminum profile wall panels 301 on both the left and right sides. Each wall panel 301 has multiple (e.g., 5 to 8) outward-facing arc-shaped protrusions 302. These protrusions are stacked layer by layer along the airflow direction (axial direction) to form an annular wing structure, which is used to guide and disturb the airflow and enhance the mixing effect of hot and cold air. In this embodiment, the arc-shaped protrusions are specifically circular arc protrusions.

[0023] The top cover 401 covers the upper end of the convection duct 300, and a humidification container 800 is embedded in the top cover. The bottom plate 402 seals the lower end of the heating element slot 101. Both the top cover 401 and the bottom plate 402 are made of aluminum profiles. Figure 2As shown, the top cover 401 is connected to the convection duct wall panel 301, the convection duct wall panel 301 is connected to the heating element slot side panel, and the heating element slot side panel is connected to the bottom plate 402 by transverse ribs R and grooves G, enabling rapid assembly and stable support. The left and right support members 501 are fixed to both ends of the convection duct 300, and the end plates 502 further cover the left and right ends of the entire heater, forming a complete outer shell.

[0024] like Figures 1 to 3 As shown, in this embodiment, the wall panels 301 on both sides of the convection duct are composed of three parts: upper, middle, and lower. Adjacent parts are connected by transverse ribs R and grooves G. Two of the parts have three longitudinally stacked arc-shaped protrusions 302, and the other part has two longitudinally stacked arc-shaped protrusions 302. These protrusions are stacked layer by layer along the airflow direction (axial direction), forming a unique "ring-wing" shape. In other embodiments, the wall panels on both sides of the convection duct may each include two parts: upper and lower, connected by transverse ribs and grooves. One part has three longitudinally stacked arc-shaped protrusions, and the other part has two longitudinally stacked arc-shaped protrusions.

[0025] This utility model is divided into two functional areas: a lower heating zone and an upper mixing and equalization zone. The air inlet of the heater is located on the base plate 402, and the air outlet is located on the top cover 401. During operation, cold air enters the heating element slot 101 from the bottom air inlet, is heated by the aluminum heating element 200, and then rises into the stacked annular wing convection duct 300. Figure 4 and Figure 5 As shown, during operation, cold air enters the heating element slot 101 from the air inlet at the bottom of the heater under natural convection. After flowing through the high-temperature aluminum heating element 200, it is rapidly heated into hot air. The hot air rises due to its decreased density and naturally flows into the upper layered annular wing convection duct 300. Inside the duct, the airflow is repeatedly blocked, divided, and guided by the annular structure, forming strong turbulence and achieving multiple mixing processes of hot and cold air (e.g., 5-8 times). Finally, a uniform and gentle warm air is delivered from the top air outlet, providing rapid, even, and comfortable heating.

[0026] In addition, the heater has mounting hooks on the back, supporting wall mounting, making it suitable for various scenarios such as residential and office spaces. The rated power of the whole unit can reach 3000W, making it particularly suitable for environments with low temperature and high humidity and without centralized heating.

[0027] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and these modifications and substitutions should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A convection heater, comprising a shell and a heating element, characterized in that: The housing includes a heating element slot for accommodating the heating element and a stacked annular wing convection duct for mixing hot air. The convection duct is located above and communicates with the heating element slot. The wall panels on both sides of the convection duct each have a plurality of arc-shaped protrusions stacked longitudinally along the airflow direction. An air outlet is provided above the convection duct, and an air inlet is provided below the heating element slot. The housing is made of aluminum alloy.

2. The convection heater according to claim 1, characterized in that: It also includes a top cover above the convection duct and a bottom plate below the heating element slot. The top cover, bottom plate, wall panels of the convection duct, and side panels of the heating element slot are all made of aluminum profiles. The top cover and the wall panels of the convection duct, the wall panels of the convection duct and the side panels of the heating element slot, and the side panels and bottom plate of the heating element slot are all connected by transverse ribs and grooves. The wall panels on both sides of the convection duct and the side panels on both sides of the heating element slot combine to form the side walls of the convection heater.

3. The convection heater according to claim 1 or 2, characterized in that: The wall panels on both sides of the convection duct each consist of two pieces, upper and lower, connected by transverse ribs and grooves. One piece has three longitudinally stacked arc-shaped protrusions, and the other piece has two longitudinally stacked arc-shaped protrusions.

4. The convection heater according to claim 1 or 2, characterized in that: The wall panels on both sides of the convection duct consist of three parts: upper, middle, and lower. Adjacent parts are connected by transverse ribs and grooves. Two of the parts have three longitudinally stacked arc-shaped protrusions, and the other part has two longitudinally stacked arc-shaped protrusions.

5. The convection heater according to claim 2, characterized in that: It also includes left and right support members for the convection duct and heater end plate. After the left and right support members are fixed at the left and right ends of the convection duct, the heater end plate covers the left and right ends of the convection duct and the heating element slot together.

6. The convection heater according to claim 5, characterized in that: The left and right support members and the heater end plate are all made of aluminum profiles.

7. The convection heater according to claim 2, characterized in that: The air inlet is located on the base plate, the air outlet is located on the top cover, and the top cover is embedded with a humidifying container.

8. The convection heater according to claim 1, characterized in that: The heating element includes a stainless steel heating tube and a plurality of aluminum alloy fins connected in series on the heating tube, and the surface of the aluminum alloy fins is coated with a graphene heat-dissipating coating.

9. The convection heater according to claim 8, characterized in that: The heating element slot has a heating element support at one end and a circuit board support at the other end. The heating element is arranged horizontally, with one end fixed to the heating element support and the other end fixed to the circuit board support.

10. The convection heater according to claim 8, characterized in that: A support is provided between the heating element and the base plate below the heating element slot.

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