Temperature control device for spiral heater

Abstract

The utility model relates to an electric heater, in particular to a temperature control device for a spiral heater, which comprises a temperature sensing support and a bimetallic strip which are mounted on the spiral heater, the temperature sensing support comprises a first support arranged on one side of the spiral heater and provided with a first spiral groove matched with the spiral heater, and a second support arranged on the other side of the spiral heater and provided with a second spiral groove matched with the spiral heater; the second support is arranged on the other side of the spiral heater and connected with the first support, and a second spiral groove matched with the spiral heater is further formed in the second support; the bimetallic strip is arranged on the first support or the second support. According to the temperature control device for the spiral heater, the bimetallic strip is arranged on the outer side of the heating pipe through the temperature sensing support, the temperature of the heating pipe can be accurately detected, then the temperature control precision is improved, the bimetallic strip is fixed more reliably through the temperature sensing support, the bimetallic strip is not affected by vibration, and the use reliability and stability are improved.

Description

Technical Field

[0001] This utility model relates to an electric heater, and more particularly to a temperature control device for a spiral heater. Background Technology

[0002] Existing spiral electric heaters, due to their spiral surface, make it inconvenient to fix the bimetallic strip. In existing technologies, the bimetallic strip is mounted at the end of the heating tube, such as the embedded temperature protection device disclosed in CN204538660U. In this device, the rear end of the front section of the second lead-out rod is connected to the front end of the rear section of the second lead-out rod via a thermal protection device, and the rear end of the rear section of the second lead-out rod extends from the right end of the heating tube. This method results in inaccurate temperature control because the bimetallic strip is far from the heating tube body. Furthermore, since the bimetallic strip is suspended, vibration can cause displacement or loosening, leading to poor contact or interference with surrounding components, affecting its response and control to temperature changes, and resulting in decreased stability and reliability. Utility Model Content

[0003] To address the aforementioned problem of inaccurate temperature control, this utility model provides a temperature control device for a spiral heater, the specific technical solution of which is as follows:

[0004] A temperature control device for a spiral heater includes a temperature-sensing bracket and a bimetallic strip for mounting on the spiral heater. The temperature-sensing bracket includes: a first bracket disposed on one side of the spiral heater and having a first spiral groove matching the spiral heater; a second bracket disposed on the other side of the spiral heater and connected to the first bracket, the second bracket also having a second spiral groove matching the spiral heater; and the bimetallic strip is disposed on the first bracket or the second bracket.

[0005] Preferably, the first bracket is provided with a connecting post, the connecting post is provided with a first screw hole, the first screw hole is arranged opposite to the first connecting hole on the bimetallic strip, and the bimetallic strip is installed on the connecting post by screws.

[0006] Preferably, it further includes a fuse wire, which is disposed on the second bracket.

[0007] Furthermore, the second bracket is provided with a fusible groove, and the fusible wire is disposed in the fusible groove.

[0008] Preferably, it further includes: a fixing plate, which is fixed to the second bracket by screws and abuts against the fuse wire so that the fuse wire is fixed in the fuse groove.

[0009] Preferably, the second bracket is provided with a fixing seat, which is located on one side of the fuse groove and has a second screw hole, which is arranged opposite to the second connecting hole on the fixing plate.

[0010] Preferably, the fixing base is provided with a fixing groove, the fixing groove is connected to the fuse groove, and the fixing plate is inserted into the fixing groove.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The present invention provides a temperature control device for a spiral heater. By setting a bimetallic strip on the outside of the heating tube with a temperature-sensing bracket, the device can accurately detect the temperature of the heating tube, thereby improving the accuracy of temperature control. Furthermore, the temperature-sensing bracket makes the fixation of the bimetallic strip more reliable and unaffected by vibration, thus improving the reliability and stability of use.

[0013] Safety is further enhanced by incorporating a fuse on the temperature-sensing bracket for overload protection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure to be installed on the spiral heater;

[0015] Figure 2 This is a stereoscopic view from the first perspective of this application;

[0016] Figure 3 This is a stereoscopic view from the second perspective of this application;

[0017] Figure 4 This is a three-dimensional view of the first support from the first perspective;

[0018] Figure 5 This is a stereoscopic view of the first support from a second perspective;

[0019] Figure 6 This is a stereoscopic view of the second support from the first perspective;

[0020] Figure 7 This is a stereoscopic view of the second support from a second perspective;

[0021] Figure 8 This is a schematic diagram of the spiral heater. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] like Figures 1 to 8As shown, a temperature control device for a spiral heater includes a bimetallic strip 3 and a temperature-sensing bracket. The temperature-sensing bracket is mounted on the spiral heater 7 and connected to the bimetallic strip 3, so that the bimetallic strip 3 is located on the side of the heating section of the spiral heater 7 body, which can improve the accuracy of temperature control, achieve timely response, and reduce delay. Specifically, the temperature-sensing bracket includes a first bracket 1 and a second bracket 2 connected together by screws. The first bracket 1 and the second bracket 2 are respectively provided with a first spiral groove 11 and a second spiral groove 21. The first spiral groove 11 and the second spiral groove 21 are both semi-circular grooves, forming a complete spiral groove, which matches the spiral tube 72 of the spiral heater 7 and can fit tightly against the surface of the spiral heater 7 to achieve reliable and rapid temperature conduction. The bimetallic strip 3 is fixed to the first bracket 1 by screws, and the bimetallic strip 3 can sense the temperature of the spiral heater 7 through the first bracket 1. The temperature-sensing bracket is made of metal material, such as aluminum, which can achieve efficient heat conduction and is easy to process.

[0024] Bimetallic strip 3, also known as bimetallic strip temperature control switch, is an existing commercially available mature product.

[0025] Because the bimetallic strip 3 is located on the side of the spiral heater 7 and is fixed and heat-conducted by the temperature-sensing bracket, it is closer to the heat source, the temperature sensing is more accurate, the delay is shorter, the response speed is faster, and the control effect is improved.

[0026] The spiral groove increases the contact area with the spiral heater 7, thereby ensuring reliable heat conduction, reducing the temperature difference between the two ends of the first support 1, which in turn reduces the temperature difference between the detection point of the bimetallic strip 3 and the surface of the spiral heater 7, thus improving the accuracy of temperature control.

[0027] To facilitate the installation of the bimetallic strip 3, two connecting posts 12 are symmetrically arranged on the first bracket 1. The top of each connecting post 12 has a first screw hole 13, which is aligned with the first connecting holes at both ends of the bimetallic strip 3. The bimetallic strip 3 is then mounted on the connecting post 12 using screws. The connecting post 12 also ensures that the bottom of the bimetallic strip 3 is firmly attached to the top of the first bracket 1, preventing stress on the connecting plate of the bimetallic strip 3 and improving the reliability and stability of the bimetallic strip 3 installation.

[0028] To further enhance safety and prevent current overload, the temperature control device for the spiral heater also includes a fuse 4, which is mounted on the second bracket 2. To facilitate the installation of the fuse 4, the second bracket 2 is provided with a fuse groove 23, in which the fuse 4 is inserted.

[0029] To reliably secure the fuse 4 and prevent it from falling out, the fuse 4 is pressed into the fuse groove 23 by a fixing plate 5. One end of the fixing plate 5 has a second connecting hole 52, which is fixed to the second bracket 2 by screws. The second bracket 2 has a fixing seat 24 located on one side of the fuse groove 23 and has a second screw hole 26 opposite to the second connecting hole 52. The fixing seat 24 has a fixing groove 25 communicating with the fuse groove 23. The fixing plate 5 is inserted into the fixing groove 25, which restricts the position of the fixing plate 5, preventing it from rotating and improving the reliability of the fuse 4's fixation.

[0030] The spiral heater 7 includes a heating tube 71 and a spiral tube 72 disposed outside the heating tube 71. The two ends of the spiral tube 72 are sealed and fixed to the two ends of the heating tube 71, and the two ends are respectively provided with an inlet 721 and an outlet 722. The electric heating tube 71 heats the liquid inside the spiral heating tube 71, and the bimetallic strip 3 can control the heating temperature of the liquid inside the spiral tube 72.

[0031] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. A temperature control device for a spiral heater, characterized in that, Includes a temperature-sensing bracket and a bimetallic strip (3) for mounting on a spiral heater (7), wherein the temperature-sensing bracket comprises: The first support (1) is located on one side of the spiral heater (7) and has a first spiral groove (11) that matches the spiral heater (7); The second bracket (2) is located on the other side of the spiral heater (7) and is connected to the first bracket (1). The second bracket (2) is also provided with a second spiral groove (21) that matches the spiral heater (7). The bimetallic strip (3) is disposed on the first bracket (1) or the second bracket (2).

2. The temperature control device for a spiral heater according to claim 1, characterized in that, The first bracket (1) is provided with a connecting post (12), and the connecting post (12) is provided with a first screw hole (13). The first screw hole (13) is arranged opposite to the first connecting hole on the bimetallic strip (3). The bimetallic strip (3) is installed on the connecting post (12) by screws.

3. A temperature control device for a spiral heater according to claim 1, characterized in that, Also includes: A fuse (4) is provided on the second bracket (2).

4. A temperature control device for a spiral heater according to claim 3, characterized in that, The second bracket (2) is provided with a fuse groove (23), and the fuse wire (4) is disposed in the fuse groove (23).

5. A temperature control device for a spiral heater according to claim 4, characterized in that, Also includes: A fixing plate (5) is fixed to the second bracket (2) by screws and abuts against the fuse wire (4) so ​​that the fuse wire (4) is fixed in the fuse groove (23).

6. A temperature control device for a spiral heater according to claim 5, characterized in that, The second bracket (2) is provided with a fixing seat (24), which is located on one side of the fuse groove (23) and has a second screw hole (26). The second screw hole (26) is arranged opposite to the second connecting hole (52) on the fixing plate (5).

7. A temperature control device for a spiral heater according to claim 6, characterized in that, The fixing base (24) is provided with a fixing groove (25), which is connected to the fuse groove (23), and the fixing plate (5) is inserted into the fixing groove (25).

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