Semiconductor heater

Abstract

The utility model discloses a semiconductor heater, which relates to the technical field of heater equipment and comprises a heater body and a protective shell. The heater body comprises a heating pipe and a plurality of PTC (Positive Temperature Coefficient) semiconductor hot sheets; the heating pipe is in a hollow barrel shape, a liquid inlet flow channel is formed in the middle of the heating pipe, and a water inlet pipe opening and a water outlet pipe opening are formed in the two ends of the heating pipe respectively. A plurality of mounting grooves are formed in the outer wall of the heating pipe in the length direction, and the PTC semiconductor heating pieces are arranged in the mounting grooves respectively; the protective shell comprises an outer shell with one open end and a shell cover arranged on the outer shell, the heater body is vertically arranged in the outer shell, and one end of the water inlet pipe opening and one end of the water outlet pipe opening penetrate through the shell cover and the outer shell respectively; the liquid flow is increased, the heat conversion efficiency is improved, heat on the heating pipe cannot be dissipated quickly, and the heating efficiency of water in the heating pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heater equipment, in particular to a semiconductor heater. Background Art

[0002] A semiconductor heater is a device that uses an electric heating element made of semiconductor material to complete heating work. Its working principle is based on the thermal effect of semiconductor material when current passes through it. It controls the temperature by utilizing the current-temperature characteristics and conducts the generated heat energy to the area that needs to be heated.

[0003] The water inlet and outlet diameters of existing semiconductor heaters are too small, and the water inlet is a split structure, which causes the heater to bear a large working pressure, a small liquid flow, a low heat conversion efficiency, and no insulation effect. During the heating process, it not only causes damage to the water heater shell, but also in winter, the heat on the copper tube will dissipate quickly, so the heating efficiency of the water in the copper tube is not high. Utility Model Content

[0004] The utility model aims to provide a semiconductor heater, which increases the liquid flow rate, improves the efficiency of heat conversion, prevents the heat on the heating tube from dissipating quickly, and improves the water heating efficiency in the heating tube.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a semiconductor heater, comprising a heater body and a protective shell; the heater body comprises a heating tube and a plurality of PTC semiconductor heat sheets; the heating tube is in a hollow cylindrical shape, a liquid inlet channel is formed in the middle of the heating tube, and a water inlet pipe port and a water outlet pipe port are respectively arranged at both ends of the heating tube; a plurality of mounting grooves are arranged on the outer wall of the heating tube along the length direction, and a plurality of the PTC semiconductor heat sheets are respectively arranged in the plurality of mounting grooves;

[0006] The protective shell includes an outer shell with an open end and a shell cover arranged on the outer shell, the heater body is vertically arranged in the outer shell, and one end of the water inlet and outlet pipes respectively penetrates the shell cover and the outer shell; a vacuum cavity is arranged inside the interlayer of the outer shell, and ceramic fiber cotton is arranged on the inner wall of the outer shell to be in contact with the outer wall of the heating tube.

[0007] In order to protect the wires, as a preferred semiconductor heater of the utility model, a wiring hole is provided inside the interlayer of the heating tube, a heat insulation sleeve is provided inside the wiring hole, and a wire electrically connected to the PTC semiconductor heating plate is provided inside the heat insulation sleeve.

[0008] In order to achieve an insulating effect, as a preferred semiconductor heater of the utility model, an insulating film is provided on the PTC semiconductor heat sheet.

[0009] In order to enhance the stability of the PTC semiconductor heat sheet, as a preferred semiconductor heater of the present invention, a heat-conducting adhesive is provided on the side of the PTC semiconductor heat sheet facing the heating tube.

[0010] In order to improve the heating efficiency, as a preferred semiconductor heater of the present invention, the heating tube is made of aluminum; the shell and the shell cover are both made of stainless steel.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model vertically arranges a water inlet and a water outlet on the heater body, so that the working pressure of the heater body is small, the liquid flow rate is increased, and the efficiency of heat conversion is improved. The PTC semiconductor heat plate is energized for heating, and the heating tube transfers heat, so that the liquid inside the heating tube is heated. The heater body is vertically arranged in the protective shell, and the vacuum cavity in the shell interlayer has a barrier effect. At the same time, the ceramic fiber wool has high-efficiency thermal insulation performance, low thermal conductivity, and small heat capacity. When the heater body is heated, it will not cause damage to the shell. In winter, the ceramic fiber wool has a thermal insulation effect, so that the heat on the heating tube will not dissipate quickly, thereby improving the water heating efficiency in the heating tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 AA structural diagram;

[0015] Figure 3 This is a schematic cross-sectional view of the PTC semiconductor heat sheet of the utility model;

[0016] Figure 4 for Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0017] In the figure: 1. Heater body; 2. Protective shell; 3. Heating tube; 4. PTC semiconductor heat plate; 5. Liquid inlet channel; 6. Water inlet pipe port; 7. Water outlet pipe port; 8. Installation groove; 9. Shell; 10. Shell cover; 11. Vacuum chamber; 12. Ceramic fiber wool; 13. Wiring hole; 14. Insulation sleeve; 15. Wire; 16. Insulation film; 17. Thermal conductive adhesive. DETAILED DESCRIPTION

[0018] See also Figures 1 to 4A semiconductor heater comprises a heater body 1 and a protective shell 2; the heater body 1 comprises a heating tube 3 and a plurality of PTC semiconductor heat sheets 4; the heating tube 3 is in a hollow cylindrical shape, a liquid inlet channel 5 is formed in the middle of the heating tube 3, and a water inlet pipe port 6 and a water outlet pipe port 7 are respectively arranged at both ends of the heating tube 3; a plurality of mounting grooves 8 are arranged on the outer wall of the heating tube 3 along the length direction, and a plurality of PTC semiconductor heat sheets 4 are respectively arranged in the plurality of mounting grooves 8;

[0019] The protective shell 2 includes an outer shell 9 with an open end and a shell cover 10 arranged on the outer shell 9. The heater body 1 is vertically arranged in the outer shell 9, and one end of the water inlet pipe 6 and the water outlet pipe 7 respectively penetrate the shell cover 10 and the outer shell 9; a vacuum cavity 11 is arranged inside the interlayer of the outer shell 9, and ceramic fiber cotton 12 that is in contact with the outer wall of the heating tube 3 is arranged on the inner wall of the outer shell 9.

[0020] In this embodiment: the water inlet pipe port 6 and the water outlet pipe port 7 on the heater body 1 are vertically arranged, so that the working pressure of the heater body 1 is relatively small, and the liquid flow rate is increased, thereby improving the efficiency of heat conversion; a plurality of PTC semiconductor heat sheets 4 are arranged in the installation groove 8, the PTC semiconductor heat sheets 4 are powered on for heating, and the heating tube 3 performs heat transfer, so that the liquid inside the heating tube 3 achieves a heating effect; the heater body 1 is vertically arranged in the protective shell 2, and the vacuum cavity 11 in the interlayer of the shell 9 has a barrier effect. At the same time, the ceramic fiber cotton 12 has high-efficiency insulation performance, low thermal conductivity, and small heat capacity. When the heater body 1 is heated, the ceramic fiber cotton 12 prevents the shell 9 from causing damage, and in winter, the ceramic fiber cotton 12 has a heat-insulating effect, so that the heat on the heating tube 3 will not dissipate quickly, thereby improving the water heating efficiency in the heating tube 3.

[0021] As a technical optimization solution of the utility model, a wiring hole 13 is provided inside the interlayer of the heating tube 3, a heat insulating sleeve 14 is provided inside the wiring hole 13, and a wire 15 electrically connected to the PTC semiconductor heat sheet 4 is provided inside the heat insulating sleeve 14.

[0022] In this embodiment, the heat insulating sleeve 14 protects the wire 15 and prevents the wire 15 from being damaged by heat.

[0023] As a technical optimization solution of the present invention, an insulating film 16 is provided on the PTC semiconductor heat sheet 4 .

[0024] In this embodiment, the insulating film 16 has a protective and insulating effect on the PTC semiconductor thermal sheet 4 .

[0025] As a technical optimization solution of the present invention, a heat-conducting adhesive 17 is provided on the side of the PTC semiconductor heat sheet 4 facing the heating tube 3 .

[0026] In this embodiment, the thermal conductive adhesive 17 not only strengthens the fixing performance of the PTC semiconductor heat sheet 4 , but also ensures the heat conduction effect between the PTC semiconductor heat sheet 4 and the heating tube 3 .

[0027] As a technical optimization solution of the present invention, the heating tube 3 is made of aluminum; the shell 9 and the shell cover 10 are both made of stainless steel.

[0028] In this embodiment: the heating tube 3 is made of aluminum, which has a high thermal conductivity and further improves the heating efficiency of water; the outer shell 9 and the shell cover 10 are both made of stainless steel, so that the protective shell 2 has excellent high-temperature strength and heat resistance, and can maintain good physical and chemical properties in a high-temperature environment.

[0029] Working principle: the water inlet pipe 6 and the water outlet pipe 7 on the heater body 1 are arranged vertically, so that the working pressure of the heater body 1 is relatively small, and the liquid flow rate is increased, thereby improving the efficiency of heat conversion. A number of PTC semiconductor heat sheets 4 are arranged in the installation groove 8. The PTC semiconductor heat sheets 4 are powered on for heating, and the heating tube 3 performs heat transfer, so that the liquid inside the heating tube 3 can achieve the heating effect; the heater body 1 is vertically arranged in the protective shell 2, and the vacuum cavity 11 in the interlayer of the shell 9 has a barrier effect. At the same time, the ceramic fiber cotton 12 has high-efficiency thermal insulation performance, low thermal conductivity, and small heat capacity. When the heater body 1 is heated, the ceramic fiber cotton 12 prevents the shell 9 from causing damage, and in winter, the ceramic fiber cotton 12 has a heat-insulating effect, so that the heat on the heating tube 3 will not dissipate quickly, thereby improving the water heating efficiency in the heating tube 3.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A semiconductor heater, characterized in that: The invention comprises a heater body (1) and a protective shell (2); the heater body (1) comprises a heating tube (3) and a plurality of PTC semiconductor heat sheets (4); the heating tube (3) is in the shape of a hollow cylinder, a liquid inlet channel (5) is formed in the middle of the heating tube (3), and a water inlet pipe opening (6) and a water outlet pipe opening (7) are respectively provided at both ends of the heating tube (3); a plurality of mounting grooves (8) are provided on the outer wall of the heating tube (3) along the length direction, and a plurality of the PTC semiconductor heat sheets (4) are respectively provided in the plurality of mounting grooves (8); The protective shell (2) comprises an outer shell (9) with an open end and a shell cover (10) arranged on the outer shell (9); the heater body (1) is vertically arranged in the outer shell (9), and one end of the water inlet pipe (6) and the water outlet pipe (7) respectively penetrate the shell cover (10) and the outer shell (9); a vacuum cavity (11) is arranged inside the interlayer of the outer shell (9), and ceramic fiber cotton (12) is arranged on the inner wall of the outer shell (9) and is in contact with the outer wall of the heating tube (3).

2. A semiconductor heater according to claim 1, characterized in that: A wiring hole (13) is provided inside the interlayer of the heating tube (3), a heat insulation sleeve (14) is provided inside the wiring hole (13), and a wire (15) electrically connected to the PTC semiconductor heat sheet (4) is provided inside the heat insulation sleeve (14).

3. A semiconductor heater according to claim 1, characterized in that: An insulating film (16) is provided on the PTC semiconductor heat sheet (4).

4. A semiconductor heater according to claim 1, characterized in that: A heat-conducting adhesive (17) is provided on the side of the PTC semiconductor heat sheet (4) facing the heating tube (3).

5. A semiconductor heater according to claim 1, characterized in that: The heating tube (3) is made of aluminum; the outer shell (9) and the shell cover (10) are both made of stainless steel.

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