CN215983231U

CN215983231U - PTC warm-air drier

Info

Publication number: CN215983231U
Application number: CN202122519724.5U
Authority: CN
Inventors: 李小刚; 刘书伦; 刘洋
Original assignee: Huizhou Yingtelun Agricultural Technology Co ltd
Current assignee: Huizhou Yingtelun Agricultural Technology Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-03-08
Anticipated expiration: 2031-10-19

Abstract

The utility model discloses a PTC (positive temperature coefficient) fan heater, which comprises a fan heater main body, wherein the fan heater main body comprises a casing, a front cover plate and a rear cover plate are fixedly arranged at two ends of the casing respectively through screws, a fan is rotatably arranged in the casing, a heating mechanism is fixedly arranged in the casing and comprises a fixing frame and a plurality of groups of heating sheets, the heating sheets are fixedly arranged in the fixing frame, an air channel is inserted between two adjacent groups of heating sheets and is arranged as a circular pipeline, a drainage plate is fixedly arranged on the inner wall of the air channel, a first filter screen is arranged on the front cover plate, and a second filter screen is arranged on the rear cover plate.

Description

PTC warm-air drier

Technical Field

The utility model relates to the technical field of PTC heating elements, in particular to a PTC warm air blower.

Background

PTC is a ceramic electric heating element for short, it utilizes the blower to drive the air to flow through PTC electric heating element and force convection, regard this as the main heat exchange mode, use the corrugated fin of u-type, has improved its heat-dissipating rate, and have synthesized the advantage of the sticky and mechanical type, and fully consider PTC heating element various heat, electric phenomena while working, its binding force is strong, it is good to conduct heat, heat-dissipating performance, high in efficiency, safe and reliable; the PTC heater has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant-temperature and electricity-saving electric heater. The PTC heater has the prominent characteristic of safety performance, namely, when the fan stops due to failure, the PTC heater can automatically and rapidly reduce the power because the PTC heater cannot fully dissipate heat, and the surface temperature of the heater is maintained at about the Curie temperature (generally about 250 ℃), so that the surface of the heater such as an electric heating tube heater cannot be red.

However, the heat-generating body of the PTC air heater in the prior art has poor heat dissipation performance, low efficiency, uneven wind speed of the wind-receiving surface, unreasonable air duct design and high energy consumption, so we need to propose the PTC air heater.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a PTC (positive temperature coefficient) fan heater, which improves the heat dissipation performance and the working efficiency of a heating body, ensures that the wind speed of a wind receiving surface of the heating body is uniform, reasonably designs an air channel, reduces the energy consumption to a certain extent, saves the use cost and solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: PTC electric fan heater, including the electric fan heater main part, the electric fan heater main part includes the casing, there are front shroud and back shroud at the both ends of casing through screw fixed mounting respectively, the fan is installed in the inside rotation of casing, the inside fixed mounting of casing has the mechanism that generates heat, the mechanism that generates heat includes mount and multiunit heating plate, heating plate fixed mounting has the wind channel in the inside of mount, and it has the circular shape pipeline to peg graft between adjacent two sets of heating plate, the inner wall fixed mounting in wind channel has the drainage plate.

Preferably, the front cover plate is provided with a first filter screen, and the rear cover plate is provided with a second filter screen.

Preferably, the lateral part of each group of the heating pieces is fixedly provided with an inserting strip, the lateral part of the air duct is provided with a groove, and the inserting strip is inserted into the groove.

Preferably, the drainage plate sets up to the curved drainage plate of slope, the drainage plate is that annular array is provided with eight groups.

Preferably, the lower end of the fan heater main body is fixedly provided with a support frame through a bolt, and the support frame is a U-shaped support frame.

Preferably, the end of the support frame is provided with a through hole, the side of the fan heater main body is provided with a threaded blind hole, and the end of the bolt penetrates through the through hole and is installed inside the threaded blind hole in a threaded manner.

Preferably, the fan heater main part is fixedly provided with a fixed block, and the fixed block is provided with two groups of knob switches.

Preferably, the heating sheets are provided with five groups, each group of heating sheets is provided with six heating sheets, and gaps are reserved among the six heating sheets.

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

the utility model improves the heat dispersion and working efficiency of the heating body, makes the wind speed of the wind-receiving surface uniform, reasonably designs the wind channel and reduces the energy consumption to a certain extent, the use cost is saved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic structural diagram of the housing, the front cover plate, the rear cover plate and the fan of the present invention;

FIG. 3 is a schematic structural diagram of a heating mechanism according to the present invention;

FIG. 4 is a schematic view of the structure of the air duct and the flow guide plate of the present invention.

In the figure: 1. a fan heater main body; 2. a bolt; 3. a support frame; 4. a fixed block; 5. a knob switch; 6. a housing; 7. a front cover plate; 8. a rear cover plate; 9. a first filter screen; 10. a second filter screen; 11. a heating mechanism; 111. a fixed mount; 112. a heat generating sheet; 12. a fan; 13. an air duct; 14. a drainage plate; 15. cutting; 16. and (4) a groove.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The same reference numbers in different drawings identify the same or similar elements; it should be further understood that terms such as "first," "second," "third," "upper," "lower," "front," "back," "inner," "outer," "end," "portion," "section," "width," "thickness," "zone," and the like, as used herein, are merely used for convenience in referring to the figures and to aid in describing the utility model, and are not intended to limit the utility model.

Referring to fig. 1-4, the present invention provides a technical solution: the PTC warm air blower comprises a warm air blower main body 1, wherein a support frame 3 is fixedly mounted at the lower end of the warm air blower main body 1 through a bolt 2, the support frame 3 is a U-shaped support frame, the support frame 3 plays a role of supporting the warm air blower main body 1, a through hole is formed in the end part of the support frame 3, a threaded blind hole is formed in the side part of the warm air blower main body 1, the end part of the bolt 2 penetrates through the through hole and is installed in the threaded blind hole in a threaded manner, a fixing block 4 is fixedly mounted on the warm air blower main body 1, two groups of knob switches 5 are arranged on the fixing block 4, and the knob switches 5 can control the warm air blower main body 1 to be opened and closed;

the warm air blower main body 1 comprises a casing 6, a front cover plate 7 and a rear cover plate 8 are fixedly mounted at two ends of the casing 6 respectively through screws, the screws are arranged in four groups in an annular array, the end parts of the screws penetrate through the front cover plate (rear cover plate) and are mounted in the casing 6 in a threaded manner, a first filter screen 9 is mounted on the front cover plate 7, a second filter screen 10 is mounted on the rear cover plate 8, the effects of blocking impurities and dust in air are achieved, the impurities and the dust are prevented from entering the casing 6, and a fan 12 is rotatably mounted in the casing 6;

the inside of the casing 6 is fixedly provided with a heating mechanism 11, the fan 12 is an axial flow fan, so that the wind speed acting on the windward side of the whole heating mechanism 11 is uniform, the heating mechanism 11 comprises a fixed frame 111 and a plurality of groups of heating sheets 112, when the heating sheets 112 are heated to 300 ℃, the operation is stopped, and the self-protection effect is achieved, five groups of heating sheets 112 are arranged, six heating sheets 112 are arranged in each group, gaps are reserved among the six heating sheets 112, the gaps among the adjacent heating sheets 112 in each group are equal, the heating sheets 112 are fixedly arranged inside the fixed frame 111, an air duct 13 is inserted between the adjacent two groups of heating sheets 112, an inserting strip 15 is fixedly arranged on the side part of each group of heating sheets 112, one side of the inserting strip 15 is arc-shaped, a groove 16 is arranged on the side part of the air duct 13, the inserting strip 15 is inserted inside the groove 16, the air duct 13 is convenient to install, and the air duct 13 is a circular pipeline, the inner wall fixed mounting in wind channel 13 has drainage plate 14, and drainage plate 14 sets up to the curved drainage plate of slope, makes wind be the heliciform and flows, and drainage plate 14 is the annular array and is provided with eight groups.

When the device is used, the knob switch 5 is screwed, the fan 12 and the heating mechanism 11 are opened, the heating sheets 112 in the heating mechanism 11 generate heat and heat, air near the heating mechanism 11 is heated, the fan 12 rotates to draw outside air into the machine shell 6 to form air convection, the second filter screen 10 can block impurities such as dust outside the machine shell 6 and blow out the hot air, part of the hot air is blown out from gaps among the groups of the heating sheets 112, and part of the hot air is blown out from the air channel 13, and due to the inclined arc-shaped flow guide plates 14 arranged in the air channel 13, the flow track of wind can be changed, so that the hot air can flow through the air channel 13 at an accelerated speed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

PTC electric fan heater, including electric fan heater main part (1), its characterized in that: the electric fan heater main part (1) includes casing (6), there are front shroud (7) and back shroud (8) at the both ends of casing (6) through screw fixed mounting respectively, fan (12) are installed in the inside rotation of casing (6), the inside fixed mounting of casing (6) has heating mechanism (11), heating mechanism (11) are including mount (111) and multiunit heating plate (112), heating plate (112) fixed mounting has wind channel (13) in the inside of mount (111), pegs graft between adjacent two sets of heating plate (112), wind channel (13) set up to circular shape pipeline, the inner wall fixed mounting in wind channel (13) has drainage plate (14).
2. The PTC fan heater according to claim 1, wherein: install first filter screen (9) on front shroud (7), install second filter screen (10) on back shroud (8).
3. The PTC fan heater according to claim 1, wherein: and the side part of each group of the heating sheets (112) is fixedly provided with an inserting strip (15), the side part of the air duct (13) is provided with a groove (16), and the inserting strip (15) is inserted in the groove (16).
4. The PTC fan heater according to claim 1, wherein: the drainage plate (14) is set to be an inclined arc-shaped drainage plate, and the drainage plate (14) is provided with eight groups in an annular array mode.
5. The PTC fan heater according to claim 1, wherein: the lower extreme of electric fan heater main part (1) passes through bolt (2) fixed mounting has support frame (3), support frame (3) set up to the support frame of U-shaped.
6. The PTC fan heater according to claim 5, wherein: the fan heater is characterized in that a through hole is formed in the end portion of the support frame (3), a threaded blind hole is formed in the side portion of the fan heater main body (1), and the end portion of the bolt (2) penetrates through the through hole and is installed inside the threaded blind hole in a threaded mode.
7. The PTC fan heater according to claim 1, wherein: the fan heater is characterized in that a fixing block (4) is fixedly mounted on the fan heater main body (1), and two groups of knob switches (5) are arranged on the fixing block (4).
8. The PTC fan heater according to claim 1, wherein: the heating sheet (112) is provided with five groups, each group of heating sheets (112) is provided with six, and gaps are reserved among the six heating sheets (112).