Accurate temperature control type heating element

Abstract

The utility model relates to the field of heating elements, in particular to an accurate temperature control type heating element. The utility model discloses a precise temperature control type heating element, which comprises a base plate and a heating element, wherein the base plate is at least provided with a disc-shaped end surface; the heating pipe is formed into a metal pipe piece, and at least one part of the heating pipe is connected with the disc-shaped end face of the base plate in an abutting mode; and the temperature controller is provided with a temperature detection part and a fusing part, the fusing part of the temperature controller is connected with the heating pipe so as to detect the surface temperature of the heating pipe, and the temperature detection part of the temperature controller is connected with the floor so as to detect the temperature of the chassis. According to the heating element, the mounting structure of the temperature controller is adjusted, the temperature detection part of the temperature controller in a traditional heating element is connected with the heating pipe, and the temperature detection of the temperature controller is higher than the temperature of an actually heated medium, so that the temperature detection part of the adjusted temperature controller can well detect the temperature of the base plate; and the temperature control precision on the heating element is more accurate.

Description

Technical Field

[0001] The utility model relates to the field of heating elements, in particular to a precise temperature-controlled heating element. Background Art

[0002] Heating elements are electronic components that convert electrical energy directly into heat energy. Specifically, when current flows through a material, electrons or other charge carriers collide with the ions or atoms of the conductor, generating friction at the atomic scale, which manifests as heat.

[0003] In practical applications, heating elements are used in conjunction with thermostats, which are automatic control elements. When the working environment temperature changes, the thermostat will produce physical deformation inside the switch, which will produce certain special effects and trigger the on or off action. This device is widely used in various scenarios that require precise temperature control, such as home appliances, motors, refrigeration or heating, and many other products.

[0004] In response to the above-mentioned related technologies, the inventors found that in the existing heating elements, since heat needs to be transferred to the heating medium through the metal tube, in order to prevent unnecessary damage to the metal tube during the heating process, each heating element has its own temperature control device. At present, the temperature control device is installed on the metal tube through a fixed plate or is set in a hollow manner with the controller separated from the metal tube. As a result, the temperature detected is not the actual detected heating medium temperature, which is prone to inaccurate temperature measurement and is greatly affected by factors such as the external environment. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a precise temperature-controlled heating element.

[0006] The present application provides a precise temperature control type heating element adopts the following technical solution:

[0007] A precise temperature-controlled heating element, characterized by comprising:

[0008] A chassis, wherein the chassis has at least one disc-shaped end surface;

[0009] A heating tube, the heating tube is formed as a metal tube-shaped part and at least a portion of the heating tube is abutted and connected with the disc-shaped end surface of the bottom plate;

[0010] Thermostat, the thermostat is provided with a temperature detection part and a fuse part, the fuse part of the thermostat is connected to the heating tube to detect the surface temperature of the heating tube, and the temperature detection part of the thermostat is connected to the floor to detect the chassis temperature.

[0011] Through the above technical solution, the present application adjusts the installation structure of the thermostat. Since the temperature detection part of the thermostat in the traditional heating element is connected to the heating tube, its temperature detection is higher than the actual temperature of the heated medium. Therefore, the temperature detection part of the thermostat adjusted in the present application can better detect the temperature of the chassis, making the temperature control accuracy on the heating element more accurate.

[0012] Preferably, a mounting cavity is provided in the chassis, and the mounting cavity is formed as an annular groove recessed inwardly along the thickness direction of the chassis.

[0013] Preferably, at least a portion of the heating tube is embedded in the annular groove and disposed in the annular groove, and both ends of the heating tube are disposed at a relative interval in a direction away from the chassis.

[0014] Through the above technical solution, the present application adopts the installation cavity and the heating tube to be embedded in each other. The structure is stable and has high consistency, so that the bonding performance between the heating tube and the chassis is more excellent.

[0015] Preferably, the upper surface of the heating tube and the upper surface of the chassis are located on the same horizontal plane.

[0016] Preferably, both ends of the heating tube are electrically connected to the temperature controller via electrical connectors.

[0017] Preferably, it also includes a fixing plate, which is arranged between the thermostat and the heating tube, the fixing plate is formed as a plate-shaped member and at least a portion of the bottom surface of the fixing plate is fixedly connected to the heating tube, another portion of the bottom surface of the fixing plate is fixedly connected to the chassis, and the upper surface of the fixing plate is fixedly connected to the thermostat.

[0018] Through the above technical solution, the present application fixes the temperature controller, the moving disk and the heating tube together through a fixing plate to form a stable structure, thereby improving the structural stability of the overall heating element.

[0019] Preferably, the fixing plate is a metal part.

[0020] Preferably, it also includes a grounding plate, wherein at least one grounding plate is provided and is formed as a right-angle metal plate-shaped part, one end of the grounding plate is fixedly connected to the surface of the chassis, and the other end of the grounding plate is arranged along the thickness direction away from the chassis.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The present application adjusts the installation structure of the thermostat. Since the temperature detection part of the thermostat in the traditional heating element is connected to the heating tube, its temperature detection is higher than the actual temperature of the heated medium. Therefore, the temperature detection part of the thermostat adjusted in the present application can better detect the temperature of the chassis, making the temperature control accuracy on the heating element more accurate.

[0023] 2. The present application uses a fixing plate to fix the temperature controller, the moving disk and the heating tube to form a stable structure, thereby improving the structural stability of the overall heating element. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the precise temperature control heating element of the embodiment of the present application.

[0025] Figure 2 It is a bottom bottom view of the fixed plate in the precise temperature control type heating element of the embodiment of the present application;

[0026] Explanation of the reference numerals: 1. chassis; 2. heating tube; 21. electrical connector; 3. thermostat; 31. fixing plate; 4. grounding plate. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-2 This application is described in further detail.

[0028] Embodiment 1 of the present application discloses a precise temperature control type heating element, including a chassis 1, wherein one side of the chassis 1 is a disc-shaped structure, and the other side is provided with four mounting and fixing brackets, each of which is provided with an "I"-shaped through groove. A receiving cavity is provided in the disc end of the chassis 1, and the receiving cavity is an annular groove structure that is recessed inward along the thickness direction of the chassis 1. A heating tube 2 is embedded in the annular groove structure, and the upper surface of the heating tube 2 after embedding is located at the same horizontal plane as the disc end face of the steel plate. The outer wall surface of the heating tube 2 is fixedly connected to the inner wall surface of the annular groove by aluminum welding, and the heating tube 2 is made of a metal aluminum tube. The ends of the heating tube 2 are arranged in a position away from the chassis 1, and the ends of each heating tube 2 are connected with steel wires by butt welding. The two steel wires are consistent with the shape of the heating tube 2 with an annular structure to form a semicircle.

[0029] A thermostat 3 is provided above the chassis 1 and the heating tube 2. The two ends of the lower bottom surface of the thermostat 3 are a temperature detection part and a fuse part respectively. A fixing plate 31 is provided below the thermostat 3 and between the chassis 1 and the heating tube 2. The lower surface of the fixing plate 31 spans the accommodating cavity of the chassis 1, so that a part of the lower surface of the fixing plate 31 is abutted against the heating tube 2, and the other part of the lower surface is abutted against the chassis 1. The upper surface of one end of the fixing plate 31 abutting against the heating tube 2 is abutted against the fuse part of the thermostat 3, and the upper surface of one end of the fixing plate 31 abutting against the chassis 1 is abutted against the temperature detection part of the thermostat 3. The upper surface of the fixing plate 31 is used to fix the thermostat 3 by bolts and nuts, and the lower surface of the fixing plate 31 is fixedly connected to the chassis 1 and the heating tube 2 by aluminum welding.

[0030] The temperature detection part of the thermostat 3 after the structural adjustment can better detect the temperature of the chassis 1, so that the temperature control accuracy of the heating element is more accurate.

[0031] The other ends of the two steel wires are respectively connected to the two ends of the thermostat 3 by welding, so that the heating tube 2 and the thermostat 3 are connected.

[0032] Two grounding plates 4 are also welded on the upper surface of the chassis 1. Each grounding plate 4 is a right-angle metal plate. One end of each grounding plate 4 is fixedly connected to the surface of the chassis 1, and the other end of the grounding plate 4 is vertically arranged along the thickness direction away from the chassis 1.

[0033] It should be noted that the connection methods used between the heating tube 2 and the temperature controller 3 in the present application include but are not limited to wire connection and steel wire connection.

[0034] The working principle of the precise temperature control heating element of this application is:

[0035] The precise temperature control heating element of the present application is set in the heating device, powered on and the current is transmitted to the heating tube 2 through the thermostat for heating. When the temperature detection part at the bottom of the thermostat detects the temperature of the chassis 1 after contacting the moral heating medium through the temperature transmitted by the fixing plate 31, when the temperature reaches the set temperature, the thermostat 3 controls the power supply to cut off the power, and the heating tube 2 no longer generates heat after being powered off. At this time, the temperature of the heating medium gradually drops to the reset temperature of the thermostat 3. After the thermostat 3 detects the temperature, the power is turned on again and the heating tube 2 works normally for heating treatment. The above steps are repeated to complete the precise temperature control during the heating process of the heating element.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A precise temperature-controlled heating element, characterized in that: include: A chassis (1), the chassis (1) being provided with at least one disc-shaped end surface; A heating tube (2), the heating tube (2) being formed as a metal tube-shaped part and at least a portion of which is abutted and connected to the disc-shaped end surface of the bottom plate (1); A thermostat (3), the thermostat (3) being provided with a temperature detection portion and a fuse portion, the fuse portion of the thermostat (3) being connected to the heating tube (2) to detect the surface temperature of the heating tube (2), and the temperature detection portion of the thermostat (3) being connected to the chassis (1) to detect the temperature of the chassis (1).

2. A precise temperature-controlled heating element according to claim 1, characterized in that: A mounting cavity is provided in the chassis (1), and the mounting cavity is formed as an annular groove that is recessed inwardly along the thickness direction of the chassis (1).

3. A precise temperature-controlled heating element according to claim 2, characterized in that: At least a portion of the heating tube (2) is embedded in the annular groove and arranged in the annular groove, and both ends of the heating tube (2) are arranged at a relative distance from the bottom plate (1).

4. A precise temperature-controlled heating element according to claim 3, characterized in that: The upper surface of the heating tube (2) and the upper surface of the bottom plate (1) are located on the same horizontal plane.

5. A precise temperature-controlled heating element according to claim 2, characterized in that: Both ends of the heating tube (2) are electrically connected to the temperature controller (3) via electrical connectors (21).

6. The precise temperature-controlled heating element according to claim 1, characterized in that: It also includes a fixing plate (31), which is arranged between the temperature controller (3) and the heating tube (2), the fixing plate (31) is formed as a plate-shaped member, and at least a portion of the bottom surface of the fixing plate (31) is fixedly connected to the heating tube (2), another portion of the bottom surface of the fixing plate (31) is fixedly connected to the chassis (1), and the upper surface of the fixing plate (31) is fixedly connected to the temperature controller (3).

7. A precise temperature-controlled heating element according to claim 6, characterized in that: The fixing plate (31) is a metal part.

8. The precise temperature-controlled heating element according to claim 1, characterized in that: It also comprises a grounding plate (4), wherein at least one grounding plate (4) is provided and is formed as a right-angled metal plate-shaped part, one end of the grounding plate (4) is fixedly connected to the surface of the chassis (1), and the other end of the grounding plate (4) is arranged along a thickness direction away from the chassis (1).

Images