Pass-type honeycomb silicon carbide electric heating device

Abstract

The invention discloses a pass-type honeycomb silicon carbide electric heating device, which relates to the field of heating elements and comprises a positive plate, honeycomb silicon carbide and a negative plate, the positive plate and the negative plate are respectively positioned at two ends of the honeycomb silicon carbide to form a clamping structure for the honeycomb silicon carbide; the honeycomb silicon carbide is used for converting electric energy into heat energy to heat fluid flowing through micropores of the honeycomb silicon carbide. According to the honeycomb silicon carbide, the honeycomb-shaped design is adopted, so that fluid can be heated in an omnibearing and three-dimensional mode when passing through the honeycomb silicon carbide, and the heating efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of heating elements, and in particular to a through-type honeycomb silicon carbide electric heating device. Background Art

[0002] Heating elements have a wide range of applications in multiple industries, especially in situations where fluids such as liquids or gases need to be heated. Silicon carbide (SiC) is widely used as a high-temperature heating material due to its excellent chemical stability, corrosion resistance, high temperature resistance and high thermal conductivity.

[0003] Existing electric heating elements are generally made into linear, U-shaped, rod-shaped, plate-shaped, etc., which are general-purpose and widely used. However, there are no electric heating components specifically used for heating fluids such as liquids and gases. General-purpose electric heating elements have the problem of low heat transfer efficiency when heating fluids. Summary of the invention

[0004] The purpose of the present application is to provide a through-type honeycomb silicon carbide electric heating device, which can improve the efficiency of fluid heating.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] The present application provides a through-type honeycomb silicon carbide electric heating device, comprising: a positive plate, a honeycomb silicon carbide and a negative plate;

[0007] The positive electrode plate and the negative electrode plate are respectively located at two ends of the honeycomb silicon carbide to form a clamping structure for the honeycomb silicon carbide;

[0008] The honeycomb silicon carbide is used to convert electrical energy into thermal energy to heat the fluid flowing through the micropores of the honeycomb silicon carbide.

[0009] Optionally, the positive electrode plate is porous or mesh-shaped stainless steel.

[0010] Optionally, the negative electrode plate is porous or mesh-shaped stainless steel.

[0011] Optionally, the micropores of the honeycomb silicon carbide are square, circular or elliptical.

[0012] Optionally, the cross-sectional area, the number of micropores and the cross-sectional area of ​​the honeycomb silicon carbide satisfy the following formula:

[0013] S1>S2;

[0014] S2=S3×N;

[0015] Among them, S1 is the cross-sectional area of ​​honeycomb silicon carbide, S2 is the flow area, S3 is the micropore cross-sectional area, and N is the number of micropores.

[0016] Optionally, the micropore depth and heating power of the honeycomb silicon carbide satisfy the following formula:

[0017]

[0018] in, To heat the heated fluid from the current temperature T0 to the target temperature T m The required heat, P is the heating power, d is the micropore depth, and v is the flow rate of the heated fluid.

[0019] Optionally, the through-type honeycomb silicon carbide electric heating device further includes: a positive electrode wire and a negative electrode wire, the positive electrode wire is connected to the positive electrode plate, and the negative electrode wire is connected to the negative electrode plate.

[0020] Optionally, the through-type honeycomb silicon carbide electric heating device further includes: a temperature sensor, and the temperature sensor is arranged on the honeycomb silicon carbide.

[0021] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0022] The present application provides a through-type honeycomb silicon carbide electric heating device, comprising: a positive plate, a honeycomb silicon carbide and a negative plate; the positive plate and the negative plate are respectively located at the two ends of the honeycomb silicon carbide to form a clamping structure for the honeycomb silicon carbide; the honeycomb silicon carbide is used to convert electrical energy into thermal energy to heat the fluid flowing through the micropores of the honeycomb silicon carbide. The honeycomb silicon carbide of the present application adopts a honeycomb design so that the fluid can be heated in all directions when passing through, thereby improving the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic structural diagram of a through-type honeycomb silicon carbide electric heating device provided in one embodiment of the present application.

[0025] Reference numerals:

[0026] 1. Positive plate; 2. Honeycomb silicon carbide; 3. Negative plate; 4. Positive wire; 5. Negative wire. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0029] like Figure 1 As shown, the embodiment of the present invention discloses a through-type honeycomb silicon carbide electric heating device, comprising: a positive plate 1, a honeycomb silicon carbide 2 and a negative plate 3; the positive plate 1 and the negative plate 3 are respectively located at the two ends of the honeycomb silicon carbide 2 to form a clamping structure for the honeycomb silicon carbide 2; the honeycomb silicon carbide 2 is used to convert electrical energy into thermal energy to heat the fluid flowing through the micropores of the honeycomb silicon carbide 2. Exemplarily, the micropores of the honeycomb silicon carbide 2 can be made into square, circular or elliptical shapes; different pore sizes, numbers, depths and heating powers can be used according to the flow rate and temperature requirements of the heated fluid, specifically:

[0030] The flow area of ​​the heated fluid is determined according to the flow rate and flow velocity of the heated fluid, and the cross-sectional area, number of micropores and cross-sectional area of ​​the honeycomb silicon carbide 2 are determined according to the flow area. The micropore depth and heating power are determined according to the flow velocity, current temperature and target temperature of the heated fluid.

[0031] Furthermore, the cross-sectional area, the number of micropores and the cross-sectional area of ​​the honeycomb silicon carbide 2 satisfy the following formula:

[0032] S1>S2;

[0033] S2=S3×N;

[0034] Among them, S1 is the cross-sectional area of ​​honeycomb silicon carbide, S2 is the flow area, S3 is the micropore cross-sectional area, and N is the number of micropores.

[0035] Furthermore, the micropore depth and heating power satisfy the following formula:

[0036]

[0037] in, To heat the heated fluid from the current temperature T0 to the target temperature T m The required heat, P is the heating power, d is the micropore depth, and v is the flow rate of the heated fluid.

[0038] This embodiment adopts a structure in which the positive plate 1 and the negative plate 3 sandwich the honeycomb silicon carbide 2. The current passes through the honeycomb silicon carbide 2, converting the electrical energy into thermal energy to heat the fluid such as liquid or gas flowing through the micropores of the honeycomb silicon carbide 2. The honeycomb design allows the fluid to be heated in all directions when passing through, improves the heating efficiency, and has a uniform temperature distribution, which is suitable for heating various fluids.

[0039] The positive plate 1 and the negative plate 3 are made of corrosion-resistant materials such as porous / mesh stainless steel, and the combined silicon carbide material has excellent corrosion resistance and can directly heat the corrosive fluid without additional anti-corrosion measures. That is, no complex heat transfer or anti-corrosion device is required, the structure is simple, and the manufacturing cost and maintenance difficulty are reduced.

[0040] This embodiment adopts a clamping structure of the positive plate 1 and the negative plate 3 to achieve effective introduction of current and efficient conversion of heat energy. The current is introduced by the positive wire 4 and the negative wire 5.

[0041] This embodiment also provides a temperature sensor. After adding the temperature sensor, the heating temperature can be monitored and adjusted in real time, thereby improving the control accuracy and safety of the system.

[0042] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A through-type honeycomb silicon carbide electric heating device, characterized in that: The through-type honeycomb silicon carbide electric heating device comprises: a positive plate, a honeycomb silicon carbide and a negative plate; The positive electrode plate and the negative electrode plate are respectively located at two ends of the honeycomb silicon carbide to form a clamping structure for the honeycomb silicon carbide; The honeycomb silicon carbide is used to convert electrical energy into thermal energy to heat the fluid flowing through the micropores of the honeycomb silicon carbide.

2. The through-type honeycomb silicon carbide electric heating device according to claim 1 is characterized in that: The positive electrode plate is porous or mesh-shaped stainless steel.

3. The through-type honeycomb silicon carbide electric heating device according to claim 1 is characterized in that: The negative electrode plate is porous or mesh-shaped stainless steel.

4. The through-type honeycomb silicon carbide electric heating device according to claim 1 is characterized in that: The micropores of the honeycomb silicon carbide are square, circular or elliptical.

5. The through-type honeycomb silicon carbide electric heating device according to claim 1 is characterized in that: The cross-sectional area, number of micropores and cross-sectional area of ​​honeycomb silicon carbide satisfy the following formula: S1>S2; S2=S3×N; Among them, S1 is the cross-sectional area of ​​honeycomb silicon carbide, S2 is the flow area, S3 is the micropore cross-sectional area, and N is the number of micropores.

6. The through-type honeycomb silicon carbide electric heating device according to claim 1, characterized in that: The micropore depth and heating power of honeycomb silicon carbide satisfy the following formula: in, To heat the heated fluid from the current temperature T0 to the target temperature T m The required heat, P is the heating power, d is the micropore depth, and v is the flow rate of the heated fluid.

7. The through-type honeycomb silicon carbide electric heating device according to claim 1 is characterized in that: The through-type honeycomb silicon carbide electric heating device further includes: a positive electrode wire and a negative electrode wire, wherein the positive electrode wire is connected to the positive electrode plate, and the negative electrode wire is connected to the negative electrode plate.

8. The through-type honeycomb silicon carbide electric heating device according to claim 1, characterized in that: The through-type honeycomb silicon carbide electric heating device further includes: a temperature sensor, which is arranged on the honeycomb silicon carbide.

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