PTC heater with high temperature resistance

Abstract

The utility model discloses a kind of high-temperature-resistant PTC heaters, specifically related to the technical field of heater, including shell, the inside of the shell is provided with multiple heating bodies, the top of shell is provided with fixed frame, multiple heating bodies are evenly provided with connecting pipe between, the both ends of connecting pipe are evenly installed with extruding block inside;The both sides of heating body are provided with connecting plate, heat conduction plate is installed on the side of heat conduction plate away from heating body, and heat conduction plate is fixedly connected with connecting block at one end close to fixed frame;The both ends of connecting pipe are evenly provided with multiple deformation grooves inside, and multiple sliding holes are arranged in the center of connecting pipe;The one end of extruding block close to the center of connecting pipe is fixedly connected with connecting rod, and sleeve ring is sleeved on the outer wall of the center of connecting pipe.The utility model has the advantages of convenient installation of heating body according to different size shell, and convenient and quick installation.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, specifically to a high-temperature resistant PTC heater. Background Technology

[0002] PTC heaters, also known as PTC heating elements, consist of PTC ceramic heating elements and aluminum tubes. This type of PTC heater has the advantages of low thermal resistance and high heat exchange efficiency. It is an automatic temperature-controlled, energy-saving electric heater and is commonly used in various heating equipment.

[0003] A T-type PTC heater, disclosed in CN117295190A, comprises a T-shaped shell, a PTC element, electrode plates, and insulating paper. The T-shaped shell includes at least one metal tube with a rectangular cross-section. The metal tube includes two heat-conducting surfaces opposite the heating surface of the PTC element. The outer surface of each heat-conducting surface has an array of raised or recessed surfaces spaced apart to ensure uniform stress distribution on the heat-conducting surfaces after the pressing process, resulting in a tight fit between the heat-conducting surfaces and the heating surface of the PTC element. Compared to existing technologies, this design ensures that the PTC core can be easily inserted into the metal tube, resulting in uniform stress distribution on the heat-conducting surfaces during the pressing process. This achieves a tight fit between the heat-conducting surfaces and the heating surface of the PTC element, ensuring consistent product power output. Furthermore, it ensures the PTC core is securely fixed within the metal tube, preventing safety hazards caused by damage to the insulating paper and improving product yield.

[0004] The aforementioned existing technology has some drawbacks in its use. Due to the different shells during processing and production, different sizes of PTC elements are required, which increases the material preparation during production and processing. Moreover, because the size is fixed, it is not possible to adjust the production of heaters of different sizes in a timely manner according to usage requirements. Furthermore, the connection and combination methods in the above technology are not convenient enough, making it difficult to fix multiple PTC elements when splicing and combining them. In addition, using multiple PTC elements to fill the space on both sides of the shell will also cause redundant heat generation on the side where two PTC elements are close to each other, which is more likely to lead to product waste. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature resistant PTC heater, which solves the problems of existing heaters not being easy to adjust and install according to size during processing, and the inconvenience of assembling multiple PTC elements.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature resistant PTC heater, comprising a housing, wherein multiple heating elements are disposed inside the housing, a fixing frame is disposed on the top of the housing, and connecting pipes are disposed between the multiple heating elements, with extrusion blocks installed inside both ends of the connecting pipes;

[0007] Both sides of the heating element are provided with connecting plates. A heat-conducting plate is installed on the side of the heat-conducting plate away from the heating element. A connecting block is fixedly connected to the end of the heat-conducting plate near the fixed frame.

[0008] Multiple deformation grooves are provided inside both ends of the connecting pipe, and multiple sliding holes are opened at the center of the connecting pipe;

[0009] A connecting rod is fixedly connected to one end of the extrusion block near the center of the connecting tube, and a collar is fitted onto the outer wall of the center of the connecting tube.

[0010] Preferably, a groove is provided at the center of the fixed frame, and a fixing block is provided at both ends of the groove of the fixed frame. Heat dissipation plates are provided on both sides of the inside of the shell.

[0011] Preferably, the collar is slidably connected to the outer wall of the connecting tube, one end of the connecting rod passes through the interior of the sliding hole and is fixedly connected to the collar, and the outer wall of the extrusion block is in contact with the inner wall of the connecting tube.

[0012] Preferably, the diameter of the extrusion block is the same as the diameter of the connecting pipe, the end of the extrusion block near the connecting pipe is inclined towards the center, the outer wall of the connecting pipe is in close sliding connection with the inside of the connecting block, and the collar is located between the two connecting blocks.

[0013] Preferably, both sides of the connecting plate are bent to fit against the sidewalls of the heating element and the heat-conducting plate, respectively. Both ends of the heat-conducting plate are bent toward one side of the heating element. One edge of the heat-conducting plate is fixedly connected to the connecting block. The connecting block has a through hole corresponding to the connecting pipe inside.

[0014] Preferably, the housing is provided with a mounting plate at one end near the fixed frame, and through holes are provided at the corners of the fixed frame, with fixing bolts installed inside the through holes. The mounting plate at one end of the housing is fixedly connected to the fixed frame by the fixing bolts.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. Depending on the internal dimensions of the housing, different numbers of heating elements can be placed. Since both sides of the heating element are equipped with bent heat-conducting plates, and a connecting plate is set on the side of the heat-conducting plate away from the heating element, the connecting plates can be pressed together when the heating elements are placed, thereby deforming the heat-conducting plates and adjusting the spacing between the heating elements. This allows for convenient placement according to the internal dimensions of the housing. Furthermore, by using multiple heating elements in combination, the housing can be heated, avoiding waste caused by using too many heating elements and effectively saving costs.

[0017] 2. The two connecting plates are brought close together, which causes the two connecting blocks to press against the collar. This causes the collar to move closer together along the sliding hole, which in turn causes the collar to move the connecting rod. The connecting rod then pulls the pressing block into the connecting tube. Since the connecting tube has deformation grooves at both ends, the ends of the connecting tube tilt outward under the pressure of the pressing block, thus pressing against the connecting block and preventing it from moving in the opposite direction. This prevents the connecting block from becoming loose and facilitates installation and fixation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a side view of the present invention;

[0021] Figure 3 This is a cross-sectional view of the internal structure of the shell of this utility model;

[0022] Figure 4 This is a schematic diagram of the external connection structure of the heating element of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the connecting pipe of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Shell; 101. Heat spreader; 102. Fixing bolt; 2. Heating element; 201. Heat conduction plate; 202. Connecting plate; 203. Connecting block; 3. Fixing frame; 301. Fixing block; 4. Connecting pipe; 401. Deformation groove; 402. Sliding hole; 5. Extrusion block; 501. Connecting rod; 502. Collar. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figures 1-5 The high-temperature resistant PTC heater shown includes a housing 1, with multiple heating elements 2 disposed inside the housing 1. A fixing frame 3 is disposed on the top of the housing 1. Connecting pipes 4 are disposed between the multiple heating elements 2, and extrusion blocks 5 are installed inside both ends of the connecting pipes 4. Connecting plates 202 are disposed on both sides of the heating elements 2. A heat-conducting plate 201 is installed on the side away from the heating elements 2, and a connecting block 203 is fixedly connected to the end of the heat-conducting plate 201 near the fixing frame 3. Multiple deformation grooves 401 are disposed inside both ends of the connecting pipes 4, and multiple sliding holes 402 are opened at the center of the connecting pipes 4. A connecting rod 501 is fixedly connected to the end of the extrusion block 5 near the center of the connecting pipe 4, and a collar 502 is sleeved on the outer wall at the center of the connecting pipe 4.

[0028] When placing the heating element 2, the connecting plates 202 are pressed together, causing the heat-conducting plate 201 to deform and thus adjusting the distance between the heating elements 2. A connecting pipe 4 is installed between the two connecting blocks 203, so that the connecting pipe 203 is sleeved with the connecting block 4. This allows the two connecting plates 202 to press together when the two heating elements 2 are combined, causing the two connecting blocks 203 to press against the collar 502. This causes the collar 502 to move closer together along the sliding hole 402, pressing against the inside of the connecting block 203, thus preventing the connecting block 203 from moving in the opposite direction and preventing the connecting blocks 203 from moving away from each other. This avoids the connection of the connecting plates 202 from becoming loose, facilitating the installation and fixing of the heating element 2. At the same time, the connecting pipe 4 can also be installed between the fixing block 301 and the connecting block 203 of the heating element 2 to connect and fix the heating element 2 and the fixing frame 3, making the installation and fixing of the device more convenient and quick.

[0029] like Figure 1 , Figure 2As shown, a groove is provided in the center of the fixed frame 3, and a fixing block 301 is provided at both ends of the groove of the fixed frame 3. Heat-spreading plates 101 are provided on both sides of the interior of the shell 1. An installation plate is provided at one end of the shell 1 near the fixed frame 3. Through holes are provided at the corners of the fixed frame 3, and fixing bolts 102 are installed inside the through holes. The installation plate at one end of the shell 1 is fixedly connected to the fixed frame 3 by the fixing bolts 102. When the heating element 2 is started, heat can be effectively transferred to the heat-conducting plate 201, so that the heat can be transferred to the heat-spreading plates 101 on both sides, so that the heat is evenly distributed inside the shell 1. Since the heating element 2 has bent heat-conducting plates 201 on both sides, and a connecting plate 202 is provided on the side of the heat-conducting plate 201 away from the heating element 2, the connecting plates 202 can be pressed together when the heating element 2 is placed, so that the heat-conducting plate 201 is deformed by compression, thereby adjusting the spacing between the heating elements 2.

[0030] like Figure 3 , Figure 5 As shown, the collar 502 is slidably connected to the outer wall of the connecting tube 4. One end of the connecting rod 501 passes through the interior of the sliding hole 402 and is fixedly connected to the collar 502. The outer wall of the extrusion block 5 is in contact with the inner wall of the connecting tube 4. The diameter of the extrusion block 5 is the same as the diameter of the connecting tube 4. The end of the extrusion block 5 near the connecting tube 4 is inclined towards the center. The connecting tube 4 is installed between the two connecting blocks 203, so that the connecting tube 203 is sleeved with the connecting block 4. Thus, when the two heating bodies 2 are combined, the two connecting plates 202 are in close contact with each other, so that the two connecting blocks 203 extrude the collar 502.

[0031] like Figure 3 , Figure 4 As shown, the outer wall of the connecting pipe 4 is slidably connected to the inside of the connecting block 203. The collar 502 is located between the two connecting blocks 203. Both sides of the connecting plate 202 are bent and respectively attached to the side walls of the heating body 2 and the heat-conducting plate 201. Both ends of the heat-conducting plate 201 are bent toward one side of the heating body 2. One edge of the heat-conducting plate 201 is fixedly connected to the connecting block 203. The inside of the connecting block 203 has a through hole corresponding to the connecting pipe 4. The connecting pipe 4 is installed between the two connecting blocks 203, so that the connecting pipe 203 is sleeved with the connecting block 4. Thus, when the two heating bodies 2 are combined, the two connecting plates 202 are attached to each other and close together, so that the two connecting blocks 203 squeeze the collar 502.

[0032] In use, multiple heating elements 2 can be easily connected to corresponding control switches via cables. Activating the heating element 2 effectively transfers heat to the heat-conducting plate 201, which in turn transfers heat to the heat-spreading plates 101 on both sides, resulting in a uniform heat distribution within the housing 1. Since multiple heating elements 2 are installed inside the housing 1, different numbers of heating elements 2 can be placed according to different internal dimensions of the housing 1 during installation and use. Furthermore, because both sides of the heating element 2 are equipped with bent heat-conducting plates 201, and a connecting plate 202 is provided on the side of the heat-conducting plate 201 away from the heating element 2, the connecting plates 202 can be pressed together when placing the heating elements 2, causing the heat-conducting plate 201 to deform and adjust the spacing between the heating elements 2. This allows for convenient placement of different numbers of heating elements 2 according to the internal dimensions of the housing 1. Moreover, the combined use of multiple heating elements 2 can achieve heating of the housing 1, avoiding waste from using too many heating elements 2 and effectively saving costs.

[0033] When used in combination, a connecting pipe 4 can be easily installed between the two connecting blocks 203, allowing the connecting pipe 203 to be sleeved with the connecting block 4. This enables the two connecting plates 202 to come into close contact when the two heating elements 2 are combined, causing the two connecting blocks 203 to press against the collar 502. This causes the collar 502 to move closer together along the sliding hole 402, which in turn moves the connecting rod 501. The connecting rod 501 then pulls the pressing block 5 into the connecting pipe 4. Since both ends of the connecting pipe 4 are open... The device is equipped with a deformation groove 401, which causes the two ends of the connecting pipe 4 to tilt outward under the pressure of the extrusion block 5, thereby extruding the inside of the connecting block 203 and preventing the connecting block 203 from moving in the opposite direction. This prevents the connecting blocks 203 from moving away from each other and avoids the connection plate 202 from becoming loose, making it easier to install and fix the heating element 2. At the same time, the connecting pipe 4 can also be installed between the fixing block 301 and the connecting block 203 of the heating element 2, realizing the connection and fixation of the heating element 2 and the fixing frame 3, making the installation and fixation of the device more convenient and quick.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-temperature resistant PTC heater, comprising a housing (1), characterized in that: The shell (1) is provided with multiple heating elements (2) inside, and a fixing frame (3) is provided on the top of the shell (1). A connecting pipe (4) is provided between the multiple heating elements (2), and a pressing block (5) is installed inside both ends of the connecting pipe (4). The heating body (2) is provided with connecting plates (202) on both sides, and the heat-conducting plate (201) is installed on the side away from the heating body (2). The heat-conducting plate (201) is fixedly connected to the end of the heat-conducting plate (201) near the fixed frame (3) with a connecting block (203). Multiple deformation grooves (401) are provided inside both ends of the connecting pipe (4), and multiple sliding holes (402) are provided at the center of the connecting pipe (4). The extrusion block (5) is fixedly connected to a connecting rod (501) at one end near the center of the connecting tube (4), and a collar (502) is sleeved on the outer wall at the center of the connecting tube (4).

2. The high-temperature resistant PTC heater according to claim 1, characterized in that: The fixed frame (3) has a groove at its center, and fixed blocks (301) are provided at both ends of the groove. Heat dissipation plates (101) are provided on both sides of the shell (1).

3. The high-temperature resistant PTC heater according to claim 1, characterized in that: The collar (502) is slidably connected to the outer wall of the connecting tube (4), one end of the connecting rod (501) passes through the interior of the sliding hole (402) and is fixedly connected to the collar (502), and the outer wall of the extrusion block (5) is in contact with the inner wall of the connecting tube (4).

4. A high-temperature resistant PTC heater according to claim 1, characterized in that: The diameter of the extrusion block (5) is the same as that of the connecting pipe (4). The end of the extrusion block (5) near the connecting pipe (4) is inclined towards the center. The outer wall of the connecting pipe (4) is in close contact with the inside of the connecting block (203) and is slidably connected. The collar (502) is located between the two connecting blocks (203).

5. A high-temperature resistant PTC heater according to claim 1, characterized in that: Both sides of the connecting plate (202) are bent and attached to the sidewalls of the heating body (2) and the heat-conducting plate (201) respectively. Both ends of the heat-conducting plate (201) are bent toward one side of the heating body (2). One edge of the heat-conducting plate (201) is fixedly connected to the connecting block (203). The connecting block (203) has a through hole corresponding to the connecting pipe (4) inside.

6. A high-temperature resistant PTC heater according to claim 1, characterized in that: The housing (1) is provided with an installation plate at one end near the fixed frame (3). The corners of the fixed frame (3) are provided with through holes, and fixing bolts (102) are installed inside the through holes. The installation plate at one end of the housing (1) is fixedly connected to the fixed frame (3) by fixing bolts (102).

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