Safe and efficient PTC heater

Abstract

The utility model discloses a safe and efficient PTC heater which comprises an installation frame, a cover plate is arranged above the installation frame, a ventilation net is arranged at the upper end of the cover plate, a heater body is arranged in the installation frame, installation blocks are arranged on the side walls of the two sides of the heater body, the two installation blocks are arranged in an L shape, and the installation blocks are arranged on the installation frame. The two ends of the two mounting blocks are each provided with two symmetrically-arranged mounting holes, the lower end of the mounting frame is provided with two symmetrically-arranged grooves, the two grooves are each internally provided with a fixing mechanism used for fixing the corresponding mounting block, and the lower end of the mounting frame is provided with a blowing mechanism used for blowing hot air. According to the utility model, the power motor drives the fan to rotate, so that the fan blows hot air provided by the heater body, the hot air is quickly contacted with an object to be heated through the ventilation net at the upper end of the cover plate, and the heating efficiency of the heater body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PTC heaters, in particular to a safe and efficient PTC heater. Background Art

[0002] The PTC heater has a constant temperature heating characteristic. The principle is that after the PTC heater is powered on, the temperature rises by self-heating, causing the resistance value to increase and enter the transition zone. The surface temperature of the PTC heater will remain constant. This temperature is only related to the Curie temperature of the PTC heater and the applied voltage, and has little to do with the ambient temperature. Even in abnormal working conditions, due to the regulation of the PTC element itself, the input power can be reduced to a very low level, and no unexpected situation will occur.

[0003] PTC heaters in the prior art generally do not have a device for quickly transmitting heat. They simply transfer the hot air itself to heat the object. They are unable to quickly transport heat and have low heating efficiency. In addition, existing heaters are generally fixed by bolts, and heaters of different sizes cannot be fixed. When fixed, they are generally fixed by multiple bolts, which makes installation and disassembly more cumbersome and reduces the adaptability of the device. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art. By making a power motor drive a fan to rotate, the fan blows the hot air provided by the heater body, so that the hot air quickly contacts the object to be heated through the air permeable net on the upper end of the cover plate, thereby improving the heating efficiency of the heater body, and thus a safe and efficient PTC heater is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A safe and efficient PTC heater comprises a mounting frame, a cover plate is arranged above the mounting frame, a breathable net is arranged on the upper end of the cover plate, a heater body is arranged in the mounting frame, mounting blocks are arranged on the side walls on both sides of the heater body, two mounting blocks are arranged in an L-shape, two mounting holes are arranged at both ends of the two mounting blocks, two symmetrically arranged grooves are arranged at the lower end of the mounting frame, fixing mechanisms for fixing the mounting blocks are arranged in the two grooves, and a blowing mechanism for blowing hot air is arranged at the lower end of the mounting frame.

[0007] Preferably, the fixing mechanism comprises a moving block slidably connected in the groove, both ends of the moving block are penetrated by telescopic frames slidably connected, and the upper ends of the two telescopic frames are provided with clamping columns, and the clamping columns cooperate with the mounting holes.

[0008] Preferably, the blowing mechanism comprises an installation box arranged at the lower end of the installation frame, a through slot is formed between the installation box and the lower end of the installation frame, a power motor is provided at the bottom of the installation box, and a fan is provided at the end of the output shaft of the power motor.

[0009] Preferably, a double-headed screw is rotatably connected through the two moving blocks, the threads at both ends of the double-headed screw have opposite rotation directions, and the two telescopic frames on the same side are respectively arranged at both ends of the double-headed screw and are threadedly connected thereto.

[0010] Preferably, movable bolts are rotatably connected between the two grooves and the side walls of the installation frame, and one end of the two movable bolts located in the grooves is rotatably connected to the side walls of the two movable blocks respectively.

[0011] Preferably, ventilation holes are provided on both sides of the installation box, and dustproof nets are provided in the two ventilation holes.

[0012] Beneficial effects of the utility model:

[0013] 1. By driving the fan to rotate with the power motor, the fan blows the hot air provided by the heater body, so that the hot air quickly contacts the object to be heated through the air-permeable net on the upper end of the cover plate, thereby improving the heating efficiency of the heater body.

[0014] 2. By moving the two telescopic frames, the clamping columns at the upper ends of the multiple telescopic frames correspond to the multiple mounting holes, and then the multiple mounting holes are set on the multiple clamping columns, and then the two moving bolts respectively drive the two moving blocks to move, so that the two moving blocks drive the multiple clamping columns to move, and the multiple clamping columns are respectively in contact with the ends of the multiple mounting holes, thereby realizing the rapid installation of heater bodies of different sizes, improving the installation efficiency and improving the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic top view of the overall structure of the utility model;

[0017] Figure 3 It is a schematic cross-sectional view of the overall structure of the utility model.

[0018] In the figure: 1 mounting frame, 2 cover plate, 3 air permeable net, 4 mounting box, 5 air permeable hole, 6 dustproof net, 7 through slot, 8 groove, 9 heater body, 10 mounting block, 11 mounting hole, 12 clamping column, 13 moving bolt, 14 double-headed screw, 15 fan, 16 moving block, 17 telescopic frame, 18 power motor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] Reference Figure 1-3 A safe and efficient PTC heater comprises a mounting frame 1, a cover plate 2 is arranged above the mounting frame 1, a breathable net 3 is arranged at the upper end of the cover plate 2, a heater body 9 is arranged in the mounting frame 1, mounting blocks 10 are arranged on both sides of the side walls of the heater body 9, the two mounting blocks 10 are both L-shaped, two symmetrical mounting holes 11 are arranged at both ends of the two mounting blocks 10, the lower end of the mounting frame 1 is provided with two symmetrical grooves 8, the two grooves 8 are provided with a fixing mechanism for fixing the mounting blocks 10, the fixing mechanism comprises a moving block 16 slidably connected in the groove 8, both ends of the moving block 16 are penetrated by a telescopic frame 17 slidably connected, and the upper ends of the two telescopic frames 17 are provided with a clamping column 12, and the clamping column 12 cooperates with the mounting hole 11.

[0022] A blowing mechanism for blowing hot air is provided at the lower end of the installation frame 1, and the blowing mechanism includes an installation box 4 arranged at the lower end of the installation frame 1, and a through groove 7 is opened between the installation box 4 and the lower end of the installation frame 1. A power motor 18 is provided at the bottom of the installation box 4, and a fan 15 is provided at the end of the output shaft of the power motor 18. The power motor 18 drives the fan 15 to rotate, so that the fan 15 blows the hot air provided by the heater body 9, so that the hot air can quickly contact the object to be heated through the air permeable net 3 at the upper end of the cover plate 2, thereby improving the heating efficiency of the heater body 9.

[0023] A double-headed screw 14 is rotatably connected between the two moving blocks 16 , and the threads at both ends of the double-headed screw 14 are rotated in opposite directions. Two telescopic frames 17 on the same side are respectively arranged at both ends of the double-headed screw 14 and are threadedly connected thereto.

[0024] There are movable bolts 13 running through and rotatably connected between the two grooves 8 and the side walls of the installation frame 1. One end of the two movable bolts 13 located in the grooves 8 is rotatably connected to the side walls of the two movable blocks 16 respectively. By moving the two telescopic frames 17, the clamping columns 12 at the upper ends of the multiple telescopic frames 17 correspond to the multiple mounting holes 11, and then the multiple mounting holes 11 are sleeved on the multiple clamping columns 12, and then the two movable bolts 13 respectively drive the two movable blocks 16 to move, so that the two movable blocks 16 drive the multiple clamping columns 12 to move, and the multiple clamping columns 12 are respectively in contact with the ends of the multiple mounting holes 11, thereby realizing rapid installation of heater bodies 9 of different sizes, improving installation efficiency, and improving the adaptability of the device.

[0025] Air holes 5 are provided on both sides of the installation box 4 , and dustproof nets 6 are provided in the two air holes 5 .

[0026] When the utility model is used, through the arrangement of the through slot 7 at the lower end of the mounting frame 1 and the mounting box 4, by starting the power motor 18 in the mounting box 4, the power motor 18 drives the fan 15 to rotate, so that the fan 15 blows the hot air provided by the heater body 9, so that the hot air quickly contacts the object to be heated through the air permeable net 3 at the upper end of the cover plate 2, thereby improving the heating efficiency of the heater body 9;

[0027] When installing the heater body 9, the mounting blocks 10 on both sides of the heater body 9 are placed above the two grooves 8 respectively, and the two double-headed screws 14 are rotated. The threads at both ends of the double-headed screws 14 rotate in opposite directions, and the two telescopic frames 17 are threadedly connected to the double-headed screws 14 to move the two telescopic frames 17, so that the clamping columns 12 at the upper ends of the multiple telescopic frames 17 correspond to the multiple mounting holes 11, and then the multiple mounting holes 11 are sleeved on the multiple clamping columns 12, and then the two moving bolts 13 are rotated respectively, so that the two moving bolts 13 respectively drive the two moving blocks 16 to move, so that the two moving blocks 16 drive the multiple clamping columns 12 to move, so that the multiple clamping columns 12 are respectively in contact with the ends of the multiple mounting holes 11, thereby realizing the rapid installation of heater bodies 9 of different sizes, improving the installation efficiency, and improving the adaptability of the device.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A safe and efficient PTC heater, comprising a mounting frame (1), characterized in that: A cover plate (2) is provided above the installation frame (1), and a breathable net (3) is provided at the upper end of the cover plate (2). A heater body (9) is provided inside the installation frame (1), and mounting blocks (10) are provided on both side walls of the heater body (9). The two mounting blocks (10) are both L-shaped, and two symmetrically arranged mounting holes (11) are provided at both ends of the two mounting blocks (10). Two symmetrically arranged grooves (8) are provided at the lower end of the installation frame (1), and fixing mechanisms for fixing the mounting blocks (10) are provided in the two grooves (8). A blowing mechanism for blowing hot air is provided at the lower end of the installation frame (1).

2. A safe and efficient PTC heater according to claim 1, characterized in that: The fixing mechanism comprises a moving block (16) slidably connected in the groove (8), and telescopic frames (17) are slidably connected through both ends of the moving block (16). The upper ends of the two telescopic frames (17) are provided with clamping columns (12), and the clamping columns (12) are matched with the mounting holes (11).

3. A safe and efficient PTC heater according to claim 2, characterized in that: The blowing mechanism comprises an installation box (4) arranged at the lower end of the installation frame (1), a through slot (7) is provided between the installation box (4) and the lower end of the installation frame (1), a power motor (18) is provided at the bottom of the installation box (4), and a fan (15) is provided at the end of the output shaft of the power motor (18).

4. A safe and efficient PTC heater according to claim 3, characterized in that: A double-headed screw (14) is rotatably connected through the two moving blocks (16), the threads at both ends of the double-headed screw (14) are in opposite directions, and the two telescopic frames (17) on the same side are respectively arranged at both ends of the double-headed screw (14) and are threadedly connected thereto.

5. A safe and efficient PTC heater according to claim 4, characterized in that: A movable bolt (13) is rotatably connected between the two grooves (8) and the side walls of the installation frame (1). One end of the two movable bolts (13) located in the grooves (8) is rotatably connected to the side walls of the two movable blocks (16).

6. A safe and efficient PTC heater according to claim 5, characterized in that: Both sides of the installation box (4) are provided with ventilation holes (5), and dustproof nets (6) are provided in the two ventilation holes (5).

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