Heating assembly

Abstract

The invention relates to the technical field of electric heating tubes, in particular to a heating assembly which comprises an electric heating tube assembly, the electric heating tube assembly is provided with a fluid inlet and a fluid outlet, the electric heating tube assembly comprises an electric heating tube, and the electric heating tube is provided with a fluid channel communicated with the fluid inlet and the fluid outlet. The electric heating tube assembly comprises a first insulating layer and a second insulating layer which are located on the outer wall of the electric heating tube, the second insulating layer covers one part of the first insulating layer, and the other part of the first insulating layer and the second insulating layer are staggered. The device is provided with the first insulating layer and the second insulating layer, double insulation is adopted, the second-class electric appliance standard is met, and safety and reliability are improved; and meanwhile, the second insulating layer covers one part of the first insulating layer, so that the visual effect of two-layer insulation is achieved, and visible double insulation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of electric heating tubes, in particular to the automotive field, and more particularly to a heating component. Background Art

[0002] Liquid electric heating components are closely related to users. For users, "visible" safety is the key to ease of use. The safety of liquid heating components in the prior art needs to be improved and cannot intuitively reflect good insulation. Summary of the invention

[0003] The purpose of the present invention is to solve the background problem and to provide a heating component.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A heating assembly comprises an electric heating pipe assembly, wherein the electric heating pipe assembly has a fluid inlet and a fluid outlet, the electric heating pipe assembly comprises an electric heating pipe, the electric heating pipe has a fluid channel connecting the fluid inlet and the fluid outlet, the electric heating pipe assembly comprises a first insulating layer and a second insulating layer located on an outer wall of the electric heating pipe, the second insulating layer covers a portion of the first insulating layer, and another portion of the first insulating layer is offset from the second insulating layer.

[0006] Two ends of the first insulating layer extend beyond the range covered by the second insulating layer.

[0007] The electric heating pipe assembly includes a protective layer, and the protective layer covers a portion of the second insulating layer.

[0008] The electric heating tube assembly has an inner core, which is located inside the electric heating tube. There is a liquid flow gap between the inner core and the electric heating tube. One end of the liquid flow gap is connected to a fluid inlet and the other end is connected to a fluid outlet. The deformability of the inner core is greater than that of the electric heating tube.

[0009] The inner core comprises an inner tube and two plugs, and the two plugs seal two ends of the inner tube respectively.

[0010] The electric heating tube assembly comprises two end covers, which are respectively located at two ends of the electric heating tube. The end covers have flow holes communicating with the liquid flow gap, and the plug is limitedly assembled with the corresponding end covers.

[0011] The end of the end cover close to the electric heating tube has a first step portion, the first step portion includes a first step surface and a first circumferential surface, the end surface of the electric heating tube abuts against the first step surface, and the inner wall of the end of the electric heating tube abuts against the first circumferential surface;

[0012] Alternatively, at least one of the plugs includes a sealing portion and a supporting portion located on one side of the sealing portion, the supporting portion having a flow gap, the sealing portion seals the end of the inner tube, the supporting portion abuts against the end cover, and the flow hole is connected to the liquid flow gap through the flow gap.

[0013] The inner core includes an inner tube and two plugs, the two plugs respectively seal the two ends of the inner tube, the electric heating tube is made of metal, the inner tube is made of plastic or rubber, or the electric heating tube and the inner tube are both made of metal, and the thickness of the electric heating tube is greater than the thickness of the inner tube.

[0014] The electric heating tube assembly comprises a spoiler, the spoiler is located in the liquid flow gap, and two ends of the spoiler are respectively assembled with the two plugs.

[0015] The heating assembly also includes an outer shell, which includes two half shells and two fixing plates. The butt surfaces of the two half shells are arranged along the axial direction of the electric heating tube. The electric heating tube assembly is at least partially located between the two half shells. The two fixing plates are respectively located at both ends of the half shells. The fixing plates connect the two half shells, and the fixing plates and the half shells are fixed by locking members. The fixing plates have through holes. The electric heating tube assembly includes two end covers, which are respectively located at both ends of the electric heating tube. The end of the end cover away from the electric heating tube has a second step portion, and the peripheral side of the second step portion is limited by the wall of the through hole. The side of the end cover away from the electric heating tube at least partially abuts against the inner side of the fixing plate.

[0016] and / or one of the half shells has a buckle portion, and the other half shell has a snap-fit ​​portion cooperating with the buckle portion;

[0017] and / or the half shell is made of insulating plastic and the fixing plate is made of a metal plate;

[0018] And / or the half shell has a plurality of mounting seats that can be assembled with external equipment.

[0019] A heating component proposed in the present invention has the beneficial effects of: the device has a first insulating layer and a second insulating layer, adopting at least double insulation, meeting the Class II electrical appliance standards, and increasing safety and reliability; at the same time, the second insulating layer covers a portion of the first insulating layer, achieving a visual effect of two layers of insulation, and visible double insulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of a half-cut three-dimensional structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 1 ;

[0024] Figure 5 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 2

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the electric heating tube of the present invention.

[0026] In the figure: shell 1, half shell 2, fluid inlet 3, fluid outlet 4, metal electrode 5, thermostat 6, fixing plate 7, plug 8, sealing part 9, supporting part 10, flow gap 11, inner core 12, inner tube 13, spoiler 14, liquid flow gap 15, electric heating pipe 16, flow hole 17, electric heating pipe assembly 18, end cover 19, first step part 20, through hole 21, second step part 22, buckle part 23. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figure 1-Figure 6 A heating component includes an electric heating pipe assembly 18, the electric heating pipe assembly 18 has a fluid inlet port 3 and a fluid outlet port 4, the electric heating pipe assembly 18 includes an electric heating pipe 16, the electric heating pipe 16 has a fluid channel 161 connecting the fluid inlet port 3 and the fluid outlet port 4, the electric heating pipe assembly 18 includes a first insulating layer 162 and a second insulating layer 163 located on the outer wall of the electric heating pipe 16, the second insulating layer 163 covers a portion of the first insulating layer 162, and another portion of the first insulating layer 162 is offset from the second insulating layer 163.

[0029] When the device is working, the fluid enters the fluid channel 161 through the fluid inlet 3, is heated by the electric heating tube 16 when passing through the fluid channel 161, and the heated fluid is discharged through the fluid outlet 4. The device is provided with a first insulating layer 162 and a second insulating layer 163, and adopts double insulation to meet the Class II electrical appliance standards and increase safety and reliability; at the same time, the second insulating layer covers a part of the first insulating layer, achieving a visual effect of two layers of insulation, and visible double insulation.

[0030] refer to Figure 6 The two ends of the first insulating layer 162 extend beyond the range covered by the second insulating layer 163 , and the double-layer insulation at both ends of the electric heating tube can achieve a visualization effect, ensuring complete visualization of the double-layer insulation effect.

[0031] The electric heating pipe assembly 18 includes a protective layer 164, and the protective layer 164 covers a portion of the second insulating layer 163. The protective layer 164 is a protective insulating layer and also has insulating properties, further improving the safety and reliability.

[0032] The electric heating tube assembly 18 has an inner core 12, which is located inside the electric heating tube 16, and a liquid flow gap 15 is formed between the inner core 12 and the electric heating tube 16. ， 本装置 The fluid channel 161 includes a liquid flow gap 15. When there is no inner core, it is defined as the fluid channel 161. When an inner core is provided, a liquid flow gap is defined between the inner core and the electric heating tube. One end of the liquid flow gap 15 is connected to the fluid inlet 3, and the other end is connected to the fluid outlet 4. The deformability of the inner core 12 is greater than that of the electric heating tube 16.

[0033] When the pressure in the liquid flow gap 15 is too high, for example, the water pressure is too high or ice forms inside the electric heating tube, causing expansion, the inner core is more deformable than the electric heating tube, making it easier to deform under force than the electric heating tube, thereby releasing pressure and protecting the electric heating tube.

[0034] The inner core 12 includes an inner tube 13 and two plugs 8, and the two plugs 8 seal the two ends of the inner tube 13 respectively. The inner core 12 of the device is a closed structure to prevent the inner core from connecting to the fluid; if the inner core connects to the fluid, the anti-freezing effect will be lost, because there is fluid inside the inner core, and the fluid expands outward when frozen, which offsets the inward pressure generated by the freezing of the fluid in the flow gap, so that the force generated when the fluid in the flow gap freezes expands outward, and the electric heating tube is easily damaged. In addition, the inner core adopts a hollow tube method to increase the deformable space of the inner tube 13 and increase the ability to release pressure.

[0035] refer to Figure 2 , Figure 3 The electric heating tube assembly 18 includes two end caps 19, which are respectively located at the two ends of the electric heating tube 16. The end caps 19 have flow holes 17 connected to the flow gap 15. The plug 8 is limitedly assembled with its corresponding end caps 19. The two ends of the electric heating tube 16 are blocked by the end caps 19, and the plug 8 is limited by the end caps 19, so that the connection between the inner core and the electric heating tube 16 is more stable to prevent the inner core from shaking.

[0036] For further reference, Figure 2 , Figure 3 The end of the end cover 19 close to the electric heating tube 16 has a first step portion 20, and the first step portion 20 includes a first step surface 201 and a first circumferential surface 202. The end surface of the electric heating tube 16 abuts against the first step surface 201, and the inner wall of the end of the electric heating tube 16 abuts against the first circumferential surface 202; the first step portion 20 is used to limit the radial and axial positions of the electric heating tube 16.

[0037] Alternatively, at least one plug 8 includes a plugging portion 9, a support portion 10 located on one side of the plugging portion 9, the support portion 10 having a flow slot 11, the plugging portion 9 seals the end of the inner tube 13, the support portion 10 abuts against the end cover 19, and the flow hole 17 is connected to the liquid flow gap 15 through the flow slot 11. The plug 8 can be integrally formed with a silicone member, the plugging portion 9 of the plug 8 seals the end of the inner tube 13, and the support portion 10 of the plug 8 abuts against the end cover 19, so that the inner core and the end cover 19 are limitedly matched.

[0038] As an embodiment, the inner core 12 includes an inner tube 13 and two plugs 8, the two plugs 8 seal the two ends of the inner tube 13 respectively, the electric heating tube is made of metal, the inner tube is made of plastic or rubber, or both the electric heating tube and the inner tube are made of metal, and the thickness of the electric heating tube is greater than the thickness of the inner tube. For example, when it is cold, if there is water inside the flow gap 15, it may freeze, causing the pressure inside the tube matrix to increase. The inner tube 13 and the tube matrix of the device are both made of metal, and the wall thickness of the inner tube 13 is less than the wall thickness of the tube matrix. The pressure generated when freezing causes the inner tube 13 with a thinner wall thickness to deform, such as elastic deformation, to avoid damaging the tube matrix.

[0039] As an embodiment, the electric heating tube 16 includes a tube substrate, a first insulating layer attached to the surface of the tube substrate, a second insulating layer, a protective layer, a nano-electric heating film attached to the surface of the protective layer, and at least two electrode layers. The multiple electrode layers are distributed at intervals and at least partially in contact with the nano-electric heating film. Metal electrodes 5 are installed on the electrode layers. Nano-electric heating film is used for heating, and the heating efficiency is high and the structure is simple.

[0040] The electric heating pipe assembly 18 includes a spoiler 14, which is located in the liquid flow gap 15, and the two ends of the spoiler 14 are respectively assembled with two plugs 8. The positional relationship between the spoiler 14 and the inner core is fixed to form an installation assembly, which can prevent the spoiler from sliding and facilitate installation and disassembly. As an implementation method, the spoiler 14 can be a spring.

[0041] refer to Figure 1 The heating component also includes a shell 1, which includes two half shells 2 and two fixing plates 7. The butt joint surfaces of the two half shells 2 are arranged along the axial direction of the electric heating tube 16. The electric heating tube assembly 18 is at least partially located between the two half shells 2. The two fixing plates 7 are respectively located at both ends of the half shells 2. The fixing plates 7 connect the two half shells 2, and the fixing plates 7 and the half shells 2 are fixed by locking members. The electric heating tube assembly 18 is wrapped by the two half shells 2, and the two half shells 2 are fixed together by the fixing plates 7. The shell assembly is simple and convenient. As an embodiment,

[0042] The fixing plate 7 has a through hole 21, and the electric heating tube assembly 18 includes two end covers 19, which are respectively located at both ends of the electric heating tube 16. The end of the end cover 19 away from the electric heating tube 16 has a second step portion 22, and the circumference of the second step portion 22 is limited by the wall of the through hole 21. The side of the end cover 19 away from the electric heating tube 16 at least partially abuts against the inner side surface of the fixing plate 7; the end cover 19 is limited axially and radially by the through hole 21 of the fixing plate 7 and the fixing plate 7 itself, so that the electric heating tube assembly 18 is limited between the two fixing plates 7.

[0043] And / or one half shell 2 has a buckle portion 23, and the other half shell 2 has a snap-fit ​​portion that cooperates with the buckle portion, and the two half shells are buckled together by buckling;

[0044] and / or the half shell 2 is made of insulating plastic and the fixing plate 7 is made of a metal plate, the insulating plastic plays a better role in insulation protection and the metal plate plays a more stable supporting role;

[0045] And / or the half shell 2 has a plurality of mounting seats that can be assembled with external equipment, so as to facilitate fixing the outer shell on the external equipment.

[0046] The heating component also includes a thermostat 6 and a shell 1. The electric heating tube assembly 18 is at least partially located inside the shell 1. The thermostat 6 is fixed to the shell 1, and the temperature sensing part of the thermostat 6 is arranged close to the electric heating tube 16. The thermostat 6 includes a self-resetting thermostat and a mechanical reset thermostat. The two thermostats are used to better provide over-temperature protection.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technical solution, conception, and design obtained by equivalent replacement or modification of the technical solution and inventive concept of the present invention by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A heating component, characterized in that: The invention comprises an electric heating pipe assembly (18), wherein the electric heating pipe assembly (18) has a fluid inlet (3) and a fluid outlet (4), wherein the electric heating pipe assembly (18) comprises an electric heating pipe (16), wherein the electric heating pipe (16) has a fluid channel (161) communicating with the fluid inlet (3) and the fluid outlet (4), and wherein the electric heating pipe assembly (18) comprises a first insulating layer (162) and a second insulating layer (163) located on the outer wall of the electric heating pipe (16), wherein the second insulating layer (163) covers a portion of the first insulating layer (162), and another portion of the first insulating layer (162) is offset from the second insulating layer (163).

2. A heating assembly according to claim 1, characterized in that: The heating component is used for a vehicle-mounted container, the vehicle-mounted container is electrically connected to an in-vehicle power interface, and both ends of the first insulating layer (162) extend beyond the range covered by the second insulating layer (163).

3. A heating assembly according to claim 1 or 2, characterized in that: The electric heating pipe assembly (18) comprises a protective layer (164), wherein the protective layer (164) covers a portion of the second insulating layer (163).

4. A heating assembly according to claim 1, characterized in that: The electric heating tube assembly (18) comprises an inner core (12), the inner core (12) being located inside the electric heating tube (16), a liquid flow gap (15) being provided between the inner core (12) and the electric heating tube (16), one end of the liquid flow gap (15) being connected to a fluid inlet (3) and the other end being connected to a fluid outlet (4), and the inner core (12) having a greater deformability than the electric heating tube (16).

5. A heating assembly according to claim 4, characterized in that: The inner core (12) comprises an inner tube (13) and two plugs (8), and the two plugs (8) respectively seal the two ends of the inner tube (13).

6. A heating assembly according to claim 4 or 5, characterized in that: The electric heating tube assembly (18) comprises two end covers (19), the two end covers (19) are respectively located at the two ends of the electric heating tube (16), the end covers (19) have flow holes (17) connected to the liquid flow gap (15), and the plug (8) is limitedly assembled with its corresponding end cover (19).

7. A heating assembly according to claim 6, characterized in that: The end of the end cover (19) close to the electric heating tube (16) has a first step portion (20), the first step portion (20) comprises a first step surface (201) and a first circumferential surface (202), the end surface of the electric heating tube (16) abuts against the first step surface (201), and the inner wall of the end of the electric heating tube (16) abuts against the first circumferential surface (202); Alternatively, at least one of the plugs (8) comprises a sealing portion (9) and a supporting portion (10) located on one side of the sealing portion (9), wherein the supporting portion (10) has a flow gap (11), the sealing portion (9) seals the end of the inner tube (13), the supporting portion (10) abuts against the end cover (19), and the flow hole (17) is connected to the liquid flow gap (15) through the flow gap (11).

8. A heating assembly according to claim 4, characterized in that: The inner core (12) comprises an inner tube (13) and two plugs (8), wherein the two plugs (8) respectively seal two ends of the inner tube (13); the electric heating tube is made of metal, and the inner tube is made of plastic or rubber, or both the electric heating tube and the inner tube are made of metal, and the thickness of the electric heating tube is greater than the thickness of the inner tube.

9. A heating assembly according to claim 5, characterized in that: The electric heating tube assembly (18) comprises a spoiler (14), the spoiler (14) is located in the liquid flow gap (15), and the two ends of the spoiler (14) are respectively assembled with the two plugs (8) in a limiting manner.

10. A heating assembly according to any one of claims 1-5, 7-9, characterized in that: The heating component also includes an outer shell (1), the outer shell (1) includes two half shells (2) and two fixing plates (7), the butt joint surfaces of the two half shells (2) are arranged along the axial direction of the electric heating tube (16), the electric heating tube assembly (18) is at least partially located between the two half shells (2), the two fixing plates (7) are respectively located at two ends of the half shells (2), the fixing plates (7) connect the two half shells (2), and the fixing plates (7) and the half shells (2) are fixed by locking members; the fixing plates (7) have a through hole (21), the electric heating tube assembly (18) includes two end covers (19), the two end covers (19) are respectively located at two ends of the electric heating tube (16), one end of the end cover (19) away from the electric heating tube (16) has a second step portion (22), the peripheral side of the second step portion (22) is limited by the wall of the through hole (21), and one side of the end cover (19) away from the electric heating tube (16) at least partially abuts against the inner side of the fixing plate (7); and / or one of the half shells (2) has a buckle portion (23), and the other half shell (2) has a snap-fit ​​portion that cooperates with the buckle portion; and / or the half shell (2) is made of insulating plastic, and the fixing plate (7) is a metal plate; And / or the half shell (2) has a plurality of mounting seats that can be assembled with external equipment.

Images