PTC heater with temperature control device

Abstract

The utility model discloses a PTC (Positive Temperature Coefficient) heater with a temperature control device, which comprises a fixed frame, PTC ceramic heating elements are arranged on the inner wall of the fixed frame, and splicing blocks are fixed on the left side and the right side of the fixed frame; a temperature controller is installed on the side face of the splicing block on the left side, a clamping groove is formed in the front end of the splicing block, a clamping block is fixed to the rear end of the splicing block, and a clamping plate and a positioning column are arranged on the side face of the splicing block. According to the PTC heater with the temperature control device, the temperature of the PTC ceramic heating element can be controlled through the temperature controller, meanwhile, when short circuit or other accidents happen to the PTC heater, the temperature of a fuse wire through which current flows is increased sharply, the fuse wire is fused, other electronic elements in the PTC heater are prevented from being damaged, the clamping block is clamped into the clamping groove, and the PTC heater is convenient to use. The two fixing frames can be spliced and fixed through the first limiting block and the second limiting block, and therefore the PTC heater can be spliced and assembled quickly and conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to PTC heater technical field, concretely is PTC heater with temperature control device. BACKGROUND

[0002] PTC heater is based on the constant temperature heating characteristic of PTC thermistor, when PTC thermistor is powered on, its self-heating temperature makes the resistance value enter the jump region, at this moment the surface temperature of PTC heater will keep constant value, because of its high safety, automatic constant temperature, energy saving and environmental protection and many aspects of advantages, in electric vehicle, household appliance (such as fan heater, bath, clothes dryer etc.), industrial equipment and many other fields have been more and more widely used, defect: the existing PTC heater can not control temperature, because temperature is too high to cause PTC heating plate burnout, in order to solve the above-mentioned defects, prior art (application number: 202220456003.6, the authorization announcement day is September 23, 2022 of Chinese patent) discloses a kind of PTC heater with temperature control device, by setting sliding rheostat, by adjusting sliding rheostat to control the change of resistance, in turn adjust the change of voltage, in turn control temperature, avoid internal temperature too high and cause PTC heating plate burnout.

[0003] Prior art is through the sliding rheostat of setting to control the temperature of PTC heater, but PTC heater lacks the function of fuse protection, so that current is too large to cause damage to the element in circuit, even cause fire risk, simultaneously, the existing PTC heater is mostly fixed by bolt splicing, lead to subsequent disassembly is relatively inconvenient, therefore we have proposed PTC heater with temperature control device can well solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing PTC heater with temperature control device to solve the problem that PTC heater lacks the function of fuse protection, so that current is too large to cause damage to the element in circuit, even cause fire risk, simultaneously, the existing PTC heater is mostly fixed by bolt splicing, lead to subsequent disassembly is relatively inconvenient.

[0005] In order to achieve the above object, the utility model provides following technical scheme: PTC heater with temperature control device, including fixed frame, PTC ceramic heating element is installed to the fixed frame inner wall, and the left and right sides of fixed frame all are fixed with spliced block, still include: the side surface of left spliced block is equipped with temperature controller, the front end of spliced block is equipped with the slot, and the rear end of spliced block is equipped with the clamping block, the side surface of spliced block is provided with clamping plate and positioning column respectively, and the outside of two positioning columns is equipped with fuse, the inside connection of spliced block has the carousel, and the inside of spliced block is provided with first limit block about the center point of carousel, and two first limit blocks are all connected through first swing plate between carousel.

[0006] Preferably, the two fixed frames are assembled together by the clamping block and the clamping groove, and the clamping block and the clamping groove are both arranged in the shape of "T".

[0007] Preferably, the clamping plate is rotatably connected to the side surface of the spliced block through a shaft, and a first torsion spring is arranged at the connection position between the shaft end of the clamping plate and the spliced block.

[0008] Preferably, the left and right sides of the clamping block are both slidably connected with second limit blocks, and the two second limit blocks are both connected with the first limit block through a second swing plate, a first limit slot is arranged on the back surface of the clamping block, and a second limit slot is symmetrically arranged in the spliced block about the center point of the clamping groove.

[0009] Preferably, the carousel is rotatably connected to the inside of the spliced block through a shaft, and the shaft end of the carousel protrudes out of the upper surface of the spliced block, the first limit block is slidably arranged in the inside of the spliced block, and the two ends of the first swing plate are both hingedly connected with the top of the carousel and the end of the first limit block.

[0010] Preferably, one end of the second limit block protrudes out of the side surface of the spliced block, the two ends of the second swing plate are both hingedly connected with the end of the second limit block and the first limit block, the first limit block is clampedly connected with the first limit slot, and the second limit block corresponds to the position of the second limit slot.

[0011] Compared with the prior art, the PTC heater with a temperature control device has the following advantages: the temperature of the PTC ceramic heating element can be controlled by the temperature controller, and when the PTC heater is short-circuited or has other accidents, the temperature of the fuse through which the current flows increases rapidly, thereby fusing the fuse and avoiding damage to other electronic components in the PTC heater. The clamping block is clamped into the clamping groove to complete the splicing of the two fixed frames, and the first limit block and the second limit block are used to fix the two fixed frames, thereby facilitating the rapid splicing and assembly of the PTC heater.

[0012] (1) by rotating the rotating disc, the two first movable plates are rotated and the two first limiting blocks are pulled to move relatively, then the clamping block on the fixed frame is clamped into the clamping groove on the other fixed frame, the rotating disc is loosened, reversely rotates under the force storage of the second torsion spring, the first limiting blocks are reset and clamped into the corresponding first limiting grooves, the clamping block is limited, so that the PTC heater is quickly spliced and assembled; further, when the first limiting blocks are reset, the second movable plate drives the two second limiting blocks to move oppositely and clamp into the corresponding second limiting grooves, the firmness of the connection of the two fixed frames is improved.

[0013] (2) when the temperature of the PTC ceramic heating element reaches the set value, the temperature controller limits the current to pass, thereby reducing the power and temperature of the PTC heater, when the temperature is lower than the set value, the temperature controller allows more current to pass, so as to increase the power and temperature of the PTC heater, and the PTC heater can maintain constant temperature output.

[0014] (3) when the PTC heater has a short circuit or other accidents, the temperature of the fuse wire through which the current flows increases sharply, thereby fusing the fuse wire, avoiding damage to other electronic elements in the PTC heater, and playing a function of fuse protection; further, when the fuse wire needs to be replaced, the two clamping plates are rotated outward to release the fixation of the fuse wire, then the fuse wire is taken off from the positioning column, and a new fuse wire is sleeved on the two positioning columns, and the two pressing plates are reset under the force storage of the first torsion spring and limit and fix the fuse wire. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of a sectional structure of the utility model;

[0016] Figure 2 It is a schematic view of a three-dimensional structure of the fixed frame of the utility model;

[0017] Figure 3 It is a schematic view of the splicing structure of the two fixed frames of the utility model;

[0018] Figure 4 It is a schematic view of the three-dimensional structure of the rotating disc, the first movable plate and the first limiting block of the utility model;

[0019] Figure 5 It is a schematic view of a side view structure of the utility model;

[0020] Figure 6 It is a schematic view of the utility model Figure 1 It is a schematic view of the enlarged structure of A in the utility model;

[0021] Figure 7 It is a schematic view of the enlarged structure of B in the utility model. Figure 1

[0022] ​In the figure: 1, fixed frame; 2, PTC ceramic heating element; 3, splicing block; 4, temperature controller; 5, first limiting groove; 6, positioning column; 7, fuse; 8, clamping plate; 9, first torsion spring; 10, first limiting block; 11, clamping block; 12, clamping groove; 13, rotating disc; 14, first movable plate; 15, second limiting block; 16, second movable plate; 17, second limiting groove; 18, second torsion spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-7 The present application provides the following technical solutions: a PTC heater with a temperature control device.

[0025] Embodiment one: in order to solve the problem that the PTC heater lacks the function of fuse protection in the prior art, which causes the elements in the circuit to be damaged when the current is too large, and even causes fire risk, and at the same time, the existing PTC heater is mostly fixed by splicing with bolts, which causes the subsequent disassembly to be relatively inconvenient, therefore the following scheme is disclosed, please refer to Figures 1-4 With Figure 6 And Figure 7As shown, including the fixed frame 1, the inner wall of the fixed frame 1 is provided with PTC ceramic heating element 2, and the left and right sides of the fixed frame 1 are fixed with splicing block 3; characterized in that, further comprising: the front end of the splicing block 3 is provided with a clamping groove 12, and the rear end of the splicing block 3 is fixed with a clamping block 11, two fixed frames 1 are assembled together through the clamping block 11 and the clamping groove 12, and the clamping block 11 and the clamping groove 12 are both provided in "T" shape, the inside of the splicing block 3 is connected with a rotating disc 13, and the inside of the splicing block 3 is symmetrically provided with a first limiting block 10 about the center point of the rotating disc 13, and the two first limiting blocks 10 are both connected with the rotating disc 13 through a first movable plate 14, the left and right sides of the inside of the clamping block 11 are both slidably connected with a second limiting block 15, and the two second limiting blocks 15 are both connected with the first limiting block 10 through a second movable plate 16, the back surface of the clamping block 11 is provided with a first limiting groove 5, the inside of the splicing block 3 is symmetrically provided with a second limiting groove 17 about the center point of the clamping groove 12, the rotating disc 13 is rotatably connected in the inside of the splicing block 3 through a shaft, and the shaft end of the rotating disc 13 extends out of the upper surface of the splicing block 3, the first limiting block 10 is slidably arranged in the inside of the splicing block 3, the two ends of the first movable plate 14 are both hingedly connected between the top of the rotating disc 13 and the end of the first limiting block 10, one end of the second limiting block 15 extends out of the side surface of the splicing block 3, and the two ends of the second movable plate 16 are both hingedly connected between the end of the second limiting block 15 and the first limiting block 10, the first limiting block 10 is clampedly connected with the first limiting groove 5, and the second limiting block 15 corresponds to the position of the second limiting groove 17.

[0026] When it is needed to assemble the PTC heater, the rotating disc 13 is rotated, so that the two first movable plates 14 are rotated and the two first limiting blocks 10 are relatively moved, then the clamping block 11 on the fixed frame 1 is clamped into the clamping groove 12 on the other fixed frame 1, and the rotating disc 13 is loosened, so that it is reversely rotated under the force storage of the second torsion spring 18, at the same time, the first limiting block 10 is reset and clamped into the corresponding first limiting groove 5, so as to limit the clamping block 11, thereby facilitating the quick assembly of the PTC heater, and at the same time, when the first limiting block 10 is reset, the two second limiting blocks 15 are oppositely moved by the second movable plate 16 and clamped into the corresponding second limiting groove 17, thereby improving the firmness of the connection of the two fixed frames 1.

[0027] Embodiment two: different from embodiment one, the fuse wire 7 arranged in this embodiment can provide the fuse protection for the PTC heater, for details, refer to Figure 1 , Figure 2 and Figure 5 As shown, the side surface of the splicing block 3 is respectively provided with a clamping plate 8 and a positioning column 6, the outer side of the two positioning columns 6 is sleeved with a fuse wire 7, the clamping plate 8 is rotatably connected on the side surface of the splicing block 3, and the shaft end of the clamping plate 8 is provided with a first torsion spring 9 at the connecting position with the splicing block 3.

[0028] When the PTC heater has a short circuit or other accidents, the temperature of the fuse wire 7 through which the current flows increases sharply, thereby fusing the fuse wire 7, avoiding damage to other electronic components in the PTC heater, and playing a function of fusing protection. Then when the fuse wire 7 needs to be replaced, the two clamping plates 8 are rotated outwardly to release the fixation of the fuse wire 7, and then the fuse wire 7 is taken off from the positioning columns 6, and a new fuse wire 7 is sleeved on the two positioning columns 6, while the two clamping plates 8 are reset under the force storage of the first torsion spring 9 and limit and fix the fuse wire 7.

[0029] Example three: Different from example two, the temperature controller 4 arranged in the example can control the temperature of the PTC heater. Specifically, referring to Figs. 1 and 2, the left side of the splicing block 3 is provided with the temperature controller 4, the PTC ceramic heating element 2 and the temperature controller 4 are electrically connected through wires, and the temperature controller 4 is used to control the temperature of the PTC ceramic heating element 2. Figure 2 Figure 5 When the temperature of the PTC ceramic heating element 2 reaches the set value, the temperature controller 4 limits the current to pass, thereby reducing the power and temperature of the PTC heater. When the temperature is lower than the set value, the temperature controller 4 allows more current to pass, so as to increase the power and temperature of the PTC heater, and the PTC heater can maintain constant temperature output.

[0030] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0031] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0032] Although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.​

Claims

1. A PTC heater with temperature control device, comprising a fixed frame (1), a PTC ceramic heating element (2) is installed on the inner wall of the fixed frame (1), and splicing blocks (3) are fixed on the left and right sides of the fixed frame (1); characterized in that, Also include: the left side of the splicing block (3) is provided with temperature controller (4), the front end of splicing block (3) is provided with clamping groove (12), and the rear end of splicing block (3) is fixed with clamping block (11), the side of splicing block (3) is respectively provided with clamping plate (8) and positioning column (6), and the outer side of two positioning columns (6) is sleeved with fuse (7), the inside of splicing block (3) is connected with rotating disc (13), and the inside of splicing block (3) is provided with first limiting block (10) about the center point of rotating disc (13), and two first limiting blocks (10) and rotating disc (13) are connected through first movable plate (14).

2. The PTC heat generator with a temperature control device according to claim 1, characterized in that: The PTC ceramic heating element (2) and the temperature controller (4) are electrically connected through wires, and the temperature controller (4) is used to control the temperature of the PTC ceramic heating element (2).

3. The PTC heat generator with a temperature control device according to claim 1, characterized in that: Two fixed frames (1) are assembled together through clamping block (11) and clamping groove (12), and clamping block (11) and clamping groove (12) are both provided in "T" shape.

4. The PTC heat generator with a temperature control device according to claim 1, characterized in that: The clamping plate (8) is rotatably connected to the side of the splicing block (3) through the shaft, and the first torsion spring (9) is installed at the connecting position of the shaft end of the clamping plate (8) and the splicing block (3).

5. The PTC heat generator with a temperature control device according to claim 1, characterized in that: The left and right sides of the clamping block (11) are both slidably connected with the second limiting block (15), and the two second limiting blocks (15) and the first limiting block (10) are connected through the second movable plate (16), the back of the clamping block (11) is provided with the first limiting slot (5), and the inside of the splicing block (3) is provided with the second limiting slot (17) about the center point of the clamping groove (12).

6. The PTC heat generator with a temperature control device according to claim 1, characterized in that: The rotating disc (13) is rotatably connected to the inside of the splicing block (3) through the shaft, and the shaft end of the rotating disc (13) extends out of the upper surface of the splicing block (3), the first limiting block (10) is slidably arranged in the inside of the splicing block (3), and the two ends of the first movable plate (14) are hingedly connected between the top of the rotating disc (13) and the end of the first limiting block (10).

7. The PTC heat generator with a temperature control device according to claim 5, characterized in that: One end of the second limiting block (15) extends out of the side of the splicing block (3), the two ends of the second movable plate (16) are hingedly connected between the end of the second limiting block (15) and the end of the first limiting block (10), the first limiting block (10) is connected with the first limiting slot (5), and the second limiting block (15) corresponds to the position of the second limiting slot (17).

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