Instant heating assembly accurate in temperature control

Abstract

The utility model discloses an instant heating assembly with accurate temperature control, which comprises a heating tube assembly and a shell sleeved outside the heating tube assembly, the heating tube assembly comprises a tubular base body, and a heating element is arranged on the outer wall of the tubular base body; a side hole is formed in at least one end of the tubular base body in the radial direction of the tubular base body, a positioning ring column is fixedly arranged in the side hole and protrudes out of the tubular base body, and a temperature sensor is inserted into the positioning ring column in a sealed mode through a sealing piece. End fixing pieces are arranged at the two ends of the tubular base body, the end fixing pieces at the two ends are fixed to the shell, and through holes allowing water pipes at the ends of the heating pipe assembly to pass through are formed in the end fixing pieces; a limiting groove is formed in the position, corresponding to the temperature sensor, of the outer wall of the edge of the end fixing piece, and the positioning ring column is embedded in the limiting groove and abuts against the groove face of the limiting groove in a positioning mode. According to the utility model, the temperature measurement and control precision is high, and the water temperature detection consistency is good; the heating efficiency is high; the structure is simple, and the disassembly and assembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of instant heating type heaters, in particular to an instant heating component with precise temperature control. Background Art

[0002] Instant heaters have the advantages of high heating efficiency and long service life. They are widely used in drinking water heating fields such as water dispensers, water purifiers, tea makers and coffee machines. Instant heaters usually use thick film heaters with tubular structures to heat drinking water; Patent publication number CN217064042U discloses a simple structure quick-install membrane heating assembly, specifically including a membrane heating tube and a shell installed on the outside of the membrane heating tube, annular wire clamps are respectively provided at the positions of the wiring terminals of the membrane heating circuit, and the annular wire clamps are provided with wiring springs for connecting the power cord, and a temperature measuring element plug-in hole is provided on the side wall of the tubular base on the water inlet and outlet sides of the membrane heating tube, and the temperature measuring end of the temperature measuring element is installed in the temperature measuring element plug-in hole through a sealing ring; however, there is a problem that it is impossible to ensure that the temperature detection end of the temperature sensor is located on the axis of the water through hole, the temperature measurement and control accuracy is low, and the consistency of water temperature detection is poor; the heating efficiency is low, the structure is complex, the disassembly and assembly are inconvenient, and the installation efficiency is low. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an instant heating component with precise temperature control, so as to ensure that the temperature detection end of the temperature sensor is located on the axis of the water through hole, with high temperature measurement and control accuracy and good consistency of water temperature detection; high heating efficiency; simple structure, easy disassembly and assembly, high assembly efficiency, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a precise temperature-controlled instant heating component, comprising a heating tube component and a shell with an outer sleeve thereon, the heating tube component comprising a tubular base, and a heating element is arranged on the outer wall of the tubular base; a side hole is opened in the radial direction at least at one end of the tubular base, and a positioning ring column is fixed in the side hole, the positioning ring column protrudes from the outside of the tubular base, and a temperature sensor is sealed and plugged in the positioning ring column through a sealing member; end fixings are arranged at both ends of the tubular base, the end fixings at both ends are fixed on the shell, and the end fixings are provided with through holes for the water pipes at the ends of the heating tube component to pass through; a limiting groove is opened on the edge outer wall of the end fixing at the position corresponding to the temperature sensor, and the positioning ring column is nested in the limiting groove and positioned and abutted with its groove surface.

[0005] Furthermore, the seal is a hollow stepped shaft structure, and the shaft shoulder of the seal abuts against the top surface of the positioning ring column; the groove surface of the limiting groove is also provided with an arc-shaped positioning surface abutting against the outer wall of the seal.

[0006] Furthermore, the temperature sensor is provided with a wiring terminal, a mounting hole is provided on the wiring terminal, a connecting protrusion is provided on the end fixing piece at a position corresponding to the wiring terminal, a blind hole is provided on the connecting protrusion at a position opposite to the mounting hole, and the wiring terminal is fixedly connected to the connecting protrusion by screws penetrating the mounting hole and the blind hole.

[0007] Furthermore, a guide column is sleeved in the tubular base, and the guide column includes a hollow tube. Both ends of the hollow tube are provided with tube body limiters, and the tube body limiters are all conical bowl-shaped structures. The closed end of the tube body limiter is fixedly nested in the pipe mouth of the hollow tube, and the flared ends of the tube body limiters penetrate to the outside of the hollow tube, and the outer diameter of the flared end of the tube body limiter is adapted to the inner diameter of the tubular base; a fluid flow channel is formed between the guide column and the tubular base, and the tube body limiter is located on the circumferential side wall of the outer side of the hollow tube with water inlet and outlet holes; a diversion hole is opened at the closed end of the tube body limiter on one side.

[0008] Furthermore, a wiring element is provided on the heating tube assembly at the wiring terminal of the heating element. The wiring element includes an annular wire clamp sleeved on the wiring terminal of the heating element, and the annular wire clamp is provided with a wiring spring for connecting the power cord. The outer shell is provided with a hollow yield hole structure at the wiring spring, and the wiring spring extends outward to the outside of the outer shell.

[0009] Furthermore, water sealing heads are fixedly provided at the pipe openings at both ends of the tubular base, and the water sealing heads are provided with water holes coaxially arranged with the tubular base. The water holes are all connected to water pipes, and the water pipes respectively pass through the corresponding through holes.

[0010] Furthermore, a thermostat mounting hole is provided on the shell, and a temperature control element is fixedly provided on the shell at the position of the thermostat mounting hole.

[0011] Furthermore, the heating element is a metal-based electric heating element.

[0012] Furthermore, a plurality of mounting holes 2 are provided on the end surface of the end fixing piece, a fixing hole is provided on the end surface of the shell at a position corresponding to the mounting holes 2, and the end fixing piece is fixedly connected to the shell by screws penetrating the mounting holes 2 and the fixing holes.

[0013] Furthermore, the shell is a left-right split structure or an integrated structure.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the instant heating component with precise temperature control is positioned by the limiting groove on the end fixing part abutting against the outer wall of the positioning ring column, and the arc-shaped positioning surface of the limiting groove abutting against the outer wall of the sealing part, thereby preventing the temperature detection end of the temperature sensor from tilting, ensuring that the temperature detection end of the temperature sensor is located on the axis of the water through hole, improving the temperature detection accuracy of the instant heating component on the water inlet side or the water outlet side, and having high temperature measurement and control accuracy and good water temperature detection consistency; and the outer shell is not in direct contact with the heating tube assembly, thereby reducing heat loss and improving heating efficiency; and the instant heating component has a simple structure, is easy to disassemble and assemble, and has high assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the heating pipe assembly and the end fixing member of the utility model;

[0017] Figure 3 This is a schematic diagram of the assembly of the heating pipe assembly and the end fixing member of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the end fixing member of the utility model;

[0019] Figure 5 This is a partial enlarged view of the guide column of the utility model;

[0020] Figure 6 This is a cross-sectional view of the guide column of the utility model;

[0021] Figure 7 This is a partial cross-sectional view of the utility model at the location of the temperature sensor.

[0022] In the figure: 1. shell; 2. heating tube assembly; 21. tubular base; 22. heating element; 23. side hole; 24. positioning ring column; 25. water flow head; 251. water flow hole; 26. water pipe; 3. end fixing piece; 31. through hole; 32. limiting groove; 33. arc-shaped positioning surface; 34. connecting protrusion; 35. blind hole; 36. second mounting hole; 4. guide column; 41. hollow tube; 42. tube body limiting piece; 421. water inlet and outlet holes; 422. diverter hole; 5. sealing piece; 6. temperature sensor; 7. terminal block; 71. mounting hole one; 8. wiring element; 81. annular wire clamp; 82. wiring spring; 9. temperature control element. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0024] See also Figure 1-7 The utility model provides a technical solution: a precise temperature-controlled instant heating component, comprising a heating tube component 2 and a housing 1 sleeved thereon, the heating tube component 2 comprising a tubular base 21, a heating element 22 being arranged on the outer wall of the tubular base 21, the heating element 22 being a metal-based electric heating element; a side hole 23 is opened in the radial direction at least at one end of the tubular base 21, and a positioning ring column 24 is fixedly arranged in the side hole 23, the positioning ring column 24 protrudes from the outside of the tubular base 21, and a temperature sensor 6 is sealed and plugged in the positioning ring column 24 through a sealing member 5; the sealing member 5 is a hollow stepped shaft structure, and the shaft shoulder of the sealing member 5 abuts against the top surface of the positioning ring column 24;

[0025] Water sealing heads 25 are fixedly provided at the pipe openings at both ends of the tubular base 21, and water holes 251 coaxially arranged with the tubular base 21 are opened on the water sealing heads 25, and the water holes 251 are connected to the water pipes 26; a guide column 4 is sleeved inside the tubular base 21, and the guide column 4 includes a hollow tube 41, and both ends of the hollow tube 41 are provided with a tube body limiter 42, and the tube body limiters 42 are all conical bowl-shaped structures, and the closed end of the tube body limiter 42 is fixedly nested in the pipe opening of the hollow tube 41, and the expanded end of the tube body limiter 42 penetrates to the outside of the hollow tube 41, and the outer diameter of the expanded end of the tube body limiter 42 is adapted to the inner diameter of the tubular base 21; a fluid flow channel is formed between the guide column 4 and the tubular base 21, and a water inlet and outlet hole 421 is opened on the circumferential side wall of the tube body limiter 42 located on the outside of the hollow tube 41;

[0026] Both ends of the tubular base 21 are provided with end fixings 3, and the end fixings 3 at both ends are fixed on the shell 1, and the end fixings 3 are provided with through holes 31, and the water pipes 26 respectively pass through the through holes 31 corresponding thereto; a limiting groove 32 is provided on the edge outer wall of the end fixing 3 at the position corresponding to the temperature sensor 6, and the positioning ring column 24 is nested in the limiting groove 32 and positioned and abutted with its groove surface; the groove surface of the limiting groove 32 is also provided with an arc-shaped positioning surface 33 abutting against the outer wall of the sealing member 5; the end fixing A plurality of second mounting holes 36 are provided on the end surface of the member 3, and a fixing hole is provided on the end surface of the housing 1 at a position corresponding to the second mounting hole 36, and the end fixing member 3 is fixedly connected to the housing 1 by screws penetrating the second mounting hole 36 and the fixing hole; the housing 1 is a left-right split structure or an integral structure; in this embodiment, the housing 1 is formed by butt-jointing of half shells arranged separately; the butt-jointing sides of the half shells are respectively provided with connecting edges of a vertical outer flange structure, and the connecting edges are connected and fixed by screws or rivets to realize mutual buckling and connection of the half shells arranged separately;

[0027] The housing 1 is provided with a thermostat mounting hole, and a temperature control element 9 is fixedly provided on the housing 1 at the position of the thermostat mounting hole;

[0028] When in use: the water pipes 26 at both ends of the tubular base 21 are used for water inlet and water outlet respectively. The water supplied by the external water supply device flows through the water pipe 26 on the water inlet side and the water inlet and outlet holes 421 of the tube body limiter 42, and then flows into the fluid flow channel between the guide column 4 and the tubular base 21. The fluid in the flow channel is heated by the heating element 22. The heated fluid flows out through the water inlet and outlet holes 421 on the water outlet side and then flows out through the water pipe 26 on the water outlet side. The temperature sensor 6 is used to detect the temperature at the water hole 251 in the water seal 25. The temperature of the fluid is measured; the limiting groove 32 is abutted and positioned with the outer wall of the positioning ring column 24, and the arc-shaped positioning surface 33 of the limiting groove 32 is abutted and positioned with the outer wall of the sealing member 5, so as to prevent the temperature detection end of the temperature sensor 6 from tilting, and ensure that the temperature detection end of the temperature sensor 6 is located on the axis of the water hole 251, thereby improving the temperature detection accuracy of the instant heating component on the water inlet side or the water outlet side, and achieving high temperature measurement and control accuracy; and the outer shell 1 is not in direct contact with the heating tube assembly 2, thereby reducing heat loss and improving heating efficiency.

[0029] Furthermore, the temperature sensor 6 is provided with a wiring terminal 7, a mounting hole 71 is provided on the wiring terminal 7, a connecting protrusion 34 is provided on the end fixing member 3 at a position corresponding to the wiring terminal 7, a blind hole 35 is provided on the connecting protrusion 34 at a position opposite to the mounting hole 71, and the wiring terminal 7 is fixedly connected to the connecting protrusion 34 by screws penetrating the mounting hole 71 and the blind hole 35; the wiring terminal 7 of the temperature sensor 6 is installed on the connecting protrusion 34 of the end fixing member 3, and the wiring terminal 7 is firmly installed and convenient to connect.

[0030] Furthermore, a diverter hole 422 is provided at the closed end of the tube body limiter 42 on one side, and a portion of the externally supplied water flows through the water inlet side water pipe 26 and flows into the hollow tube 41 through the diverter hole 422, and is preheated by the heat generated by the hollow tube 41; the water entering from the water inlet side water pipe 26 continuously flows into the hollow tube 41 through the diverter hole 422, so that the preheated water in the hollow tube 41 continuously diffuses and overflows to the outside of the diverter hole 422, and the water overflowing from the hollow tube 41 to the outside of the diverter hole 422 flows into the fluid flow channel through the water inlet and outlet holes 421 on the water inlet side, and is heated by the heating element 22, thereby improving the heating efficiency; and preventing the fluid from penetrating into the interior of the hollow tube 41 to form "dead water" when both ends of the hollow tube 41 are closed, thereby affecting the heating efficiency.

[0031] Furthermore, a wiring element 8 is provided on the heating tube assembly 2 at the terminal of the heating element 22. The wiring element 8 includes an annular wire clamp 81 sleeved on the terminal of the heating element 22, and the annular wire clamp 81 is provided with a wiring spring 82 for connecting the power line. The outer shell 1 is located at the wiring spring 82 for a hollow hole structure, and the wiring spring 82 extends outward to the outside of the outer shell 1. The wiring element 8 of the heating element 22 has a simple structure, is securely installed, and is easy to disassemble and assemble, and the heating element 22 is easy to connect.

[0032] The instant heating component with precise temperature control disclosed in the present embodiment is positioned by the limiting groove 32 on the end fixing member 3 abutting against the outer wall of the positioning ring column 24, and the arc-shaped positioning surface 33 of the limiting groove 32 abutting against the outer wall of the sealing member 5, so as to prevent the temperature detection end of the temperature sensor 6 from tilting, and ensure that the temperature detection end of the temperature sensor 6 is located on the axis of the water hole 251, thereby improving the temperature detection accuracy of the instant heating component on the water inlet side or the water outlet side, and having high temperature measurement and control accuracy and good water temperature detection consistency; and the outer shell 1 is not in direct contact with the heating tube assembly 2, so as to reduce heat loss and improve heating efficiency; and the instant heating component has a simple structure, is easy to disassemble and assemble, and has high assembly efficiency.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An instant heating component with precise temperature control, comprising a heating pipe component and a housing provided on the outside thereof, characterized in that: The heating tube assembly comprises a tubular base, and a heating element is arranged on the outer wall of the tubular base; a side hole is opened in the radial direction of at least one end of the tubular base, and a positioning ring column is fixed in the side hole, the positioning ring column protrudes from the outside of the tubular base, and a temperature sensor is sealed and plugged in the positioning ring column through a sealing member; end fixing members are arranged at both ends of the tubular base, the end fixing members at both ends are fixed on the outer shell, and the end fixing members are provided with through holes for the water pipe at the end of the heating tube assembly to pass through; a limiting groove is opened on the edge outer wall of the end fixing member at the position corresponding to the temperature sensor, and the positioning ring column is nested in the limiting groove and positioned and abutted with its groove surface.

2. The instant heating component with precise temperature control according to claim 1, characterized in that: The seal is a hollow stepped shaft structure, and the shaft shoulder of the seal abuts against the top surface of the positioning ring column; the groove surface of the limiting groove is also provided with an arc-shaped positioning surface abutting against the outer wall of the seal.

3. The instant heating component with precise temperature control according to claim 1, characterized in that: The temperature sensor is provided with a wiring terminal, a mounting hole 1 is provided on the wiring terminal, a connecting protrusion is provided on the end fixing piece at a position corresponding to the wiring terminal, a blind hole is provided on the connecting protrusion at a position opposite to the mounting hole 1, and the wiring terminal is fixedly connected to the connecting protrusion by screws penetrating the mounting hole 1 and the blind hole.

4. The instant heating component with precise temperature control according to claim 1, characterized in that: A guide column is sleeved in the tubular base, and the guide column includes a hollow tube. Both ends of the hollow tube are provided with tube body limiters, and the tube body limiters are all conical bowl-shaped structures. The closed end of the tube body limiter is fixedly nested in the pipe mouth of the hollow tube, and the flared ends of the tube body limiter penetrate to the outside of the hollow tube, and the outer diameter of the flared end of the tube body limiter is adapted to the inner diameter of the tubular base; a fluid flow channel is formed between the guide column and the tubular base, and the tube body limiter is provided with water inlet and outlet holes on the circumferential side wall outside the hollow tube; a diversion hole is provided at the closed end of the tube body limiter on one side.

5. The instant heating component with precise temperature control according to claim 1, characterized in that: The heating tube assembly is provided with a wiring element at the wiring terminal of the heating element. The wiring element includes an annular wire clamp sleeved on the wiring terminal of the heating element, and the annular wire clamp is provided with a wiring spring for connecting the power line. The outer shell is provided with a hollow yielding hole structure at the wiring spring, and the wiring spring extends outward to the outside of the outer shell.

6. The instant heating component with precise temperature control according to claim 1, characterized in that: Water sealing heads are fixedly provided at the pipe openings at both ends of the tubular base, and water holes coaxially arranged with the tubular base are opened on the water sealing heads. The water holes are all connected with water pipes, and the water pipes respectively pass through the corresponding through holes.

7. The instant heating component with precise temperature control according to claim 1, characterized in that: The shell is provided with a thermostat installation hole, and a temperature control element is fixedly provided on the shell at the position of the thermostat installation hole.

8. The instant heating component with precise temperature control according to claim 1, characterized in that: The heating element is a metal-based electric heating element.

9. The instant heating component with precise temperature control according to claim 1, characterized in that: The end surface of the end fixing piece is provided with a plurality of second mounting holes, the end surface of the shell is provided with fixing holes at positions corresponding to the second mounting holes, and the end fixing piece is fixedly connected to the shell by screws penetrating the second mounting holes and the fixing holes.

10. The instant heating component with precise temperature control according to claim 1, characterized in that: The shell is a left-right split structure or an integrated structure.

Images