Liquid heater with sealed radial water nozzle

Abstract

The utility model discloses a liquid heater with a sealed radial water nozzle, which comprises an upper shell and a lower shell, the bottom of the upper shell is provided with an accommodating bin, a PTC (Positive Temperature Coefficient) heating core is arranged in the accommodating bin, the top of the PTC heating core is provided with a confluence piece, the top end of the confluence piece is provided with an epoxy plate, and the top of the upper shell is provided with a sealing cover. An upper aluminum casting and a lower aluminum casting of the novel shell structure are combined to form a water channel, and direct flushing and streaming can be achieved; the heating body is arranged in the cast aluminum groove in contact with the cooling liquid, so that efficient heat exchange with the liquid is realized; the heating body and the shell are sealed through a sealing ring; the temperature controller is arranged on the shell for primary over-temperature protection, and the fuse is used for secondary over-temperature protection, so that the over-temperature risk is avoided; according to the high-low-voltage wire throwing type structure, internal and external wiring sealing of the wire harness is achieved through the sealing plug, and the sealing plug is locked through the pressing block locking screw; the top is covered with a cover, and the periphery is coated with sealant to seal the heating body.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid heaters, and more specifically, to a liquid heater with a radially sealed water nozzle. Background Art

[0002] For structural stability and integration, it is necessary to configure a metal shell electric heater with high-precision water nozzle size, small structure and high power density to achieve precise assembly and heating; the high-pressure liquid electric heater is the core component in the current thermal management system.

[0003] At present, most high-pressure liquid electric heaters are water tank type PTC heaters with plastic shells, so the assembly accuracy is low, the shell is brittle, and the volume is large, resulting in low assembly accuracy, requiring hose connection, low integration, easy aging and damage of the shell, occupying space, and low power density per unit volume and unit weight, causing waste of resources and volume.

[0004] In view of the problems in the related art, no effective solution has been proposed yet. Summary of the Utility Model

[0005] In view of the problems in the related art, the utility model provides a liquid heater with a radially sealed water nozzle to overcome the above technical problems existing in the prior related art.

[0006] Therefore, the specific technical solution adopted by the utility model is as follows:

[0007] A liquid heater with a radially sealed water nozzle includes an upper shell and a lower shell. A receiving chamber is provided at the bottom of the upper shell. A PTC heating core is provided in the receiving chamber. A current collecting member is provided at the top of the PTC heating core. An epoxy board is provided at the top end of the current collecting member. A sealing cover is provided at the top of the upper shell.

[0008] Preferably, a control circuit thermostat is provided on the left side inside the upper shell, and a PTC circuit fuse is provided on the right side inside the upper shell.

[0009] Preferably, a low-voltage connector is provided on one side of the upper shell. A rubber plug connected to the upper shell is sleeved on the low-voltage connector. A PTC circuit wire harness and a control circuit wire harness are respectively connected through the rubber plug. A sealing ring is provided between the upper shell and the lower shell.

[0010] Preferably, the PTC heating core includes a PTC heating component, a thermally conductive insulating silica gel sheet, a U-shaped fixing block and a T-shaped block. The outer surface of the PTC heating component is wrapped with the thermally conductive insulating silica gel sheet. The outer surface of the thermally conductive insulating silica gel sheet is rigidly wrapped with the U-shaped fixing block. The T-shaped block presses the U-shaped fixing block into the water channel groove of the upper shell for interference fit.

[0011] Preferably, a water channel is formed among the upper shell, the lower shell and the sealing ring. A liquid channel is provided between the upper shell and the lower shell. A water nozzle communicated with the liquid channel is provided at the bottom end of the lower shell. The PTC heating element is located in the water channel groove.

[0012] Preferably, the PTC circuit fuse is connected with the PTC circuit harness, and the control circuit thermostat is connected with the control circuit harness.

[0013] Preferably, the rubber plug is in interference fit with the upper shell. A metal pressing piece is provided on the rubber plug, and fastening screws connecting the rubber plug with the upper shell are provided on the rubber plug.

[0014] The beneficial effects of the utility model are as follows: by adopting the PTC heating component as the heating body, the new shell structure is composed of upper and lower cast aluminum parts to form a water channel, which can be directly flushed or flow around; the heating body is arranged in the cast aluminum groove in contact with the coolant to realize efficient heat exchange with the liquid; the heating body and the shell are sealed by a sealing ring; the water nozzle is radially sealed with high dimensional accuracy to ensure that the center distance of the water nozzle is 120 mm; the 4 installation angles are in the same direction as the water nozzle to realize the orientation and fixation of the water nozzle installation; a thermostat is arranged on the shell as the primary over-temperature protection, and a fuse is used as the secondary over-temperature protection to avoid the over-temperature risk; the high and low voltage trailing wire type structure is adopted, and the wiring harness realizes the internal and external wiring sealing through the sealing plug, and the sealing plug is locked tightly by the pressing block locking screw; the top cover is covered, and the heating body is sealed by applying a sealing glue around. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is an exploded view of a liquid heater with a radially sealed water nozzle according to an embodiment of the present utility model;

[0017] Figure 2 is a side view of a liquid heater with a radially sealed water nozzle according to an embodiment of the present utility model;

[0018] Figure 3 is a structural schematic diagram of a PTC heating element in a liquid heater with a radially sealed water nozzle according to an embodiment of the present utility model;

[0019] Figure 4 is a cross-sectional view of a liquid heater with a radially sealed water nozzle according to an embodiment of the present utility model;

[0020] Figure 5 It is a top view of the PTC heating core in a liquid heater with a radially water nozzle seal according to an embodiment of the present invention;

[0021] Figure 6 It is a top view of the upper housing in a liquid heater with a radially water nozzle seal according to an embodiment of the present invention;

[0022] Figure 7 It is a schematic structural diagram of the control circuit harness in a liquid heater with a radially water nozzle seal according to an embodiment of the present invention

[0023] Figure 8 It is a circuit diagram of the control circuit thermostat and the PTC circuit fuse in a liquid heater with a radially water nozzle seal according to an embodiment of the present invention.

[0024] In the figure:

[0025] 1. Upper housing; 2. Lower housing; 3. Accommodation chamber; 4. PTC heating core; 5. Busbar; 6. Epoxy board; 7. Sealing cover; 8. Control circuit thermostat; 9. PTC circuit fuse; 10. Low-voltage connector; 11. Rubber plug; 12. PTC circuit harness; 13. Control circuit harness; 14. Sealing ring; 15. PTC heating assembly; 16. Thermally conductive insulating silica gel sheet; 17. U-shaped fixing block; 18. T-shaped block; 19. Liquid channel; 20. Water nozzle; 21. Metal pressing sheet; 22. Fastening screw; 23. Water channel. Detailed implementation manners

[0026] To further illustrate each embodiment, the present invention provides accompanying drawings, which are a part of the disclosure of the present invention. They are mainly used to illustrate the embodiments and can be used to explain the operating principle of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0027] According to an embodiment of the present invention, a liquid heater with a radially water nozzle seal is provided.

[0028] Embodiment 1;

[0029] As Figure 1-8As shown in the figure, a liquid heater with a radial water nozzle seal according to an embodiment of the present utility model includes an upper housing 1 and a lower housing 2. A receiving chamber 3 is provided at the bottom of the upper housing 1. A PTC heating core 4 is provided in the receiving chamber 3. A current collecting member 5 is provided at the top of the PTC heating core 4. An epoxy board 6 is provided at the top end of the current collecting member 5. A sealing cover 7 is provided at the top of the upper housing 1.

[0030] Embodiment 2;

[0031] As Figure 1-8 shown in the figure, a control circuit thermostat 8 is provided on the left side inside the upper housing 1. A PTC circuit fuse 9 connected to the current collecting member 5 is provided on the right side inside the upper housing 1. A low-voltage connector 10 is provided on one side of the upper housing 1. A rubber plug 11 connected to the upper housing 1 is sleeved on the low-voltage connector 10. A PTC circuit wire harness 12 and a control circuit wire harness 13 are respectively connected through the rubber plug 11. A sealing ring 14 is provided between the upper housing 1 and the lower housing 2. The PTC heating core 4 includes a PTC heating component 15, a heat-conducting insulating silica gel sheet 16, a U-shaped fixing block 17, and a T-shaped block 18. The outer surface of the PTC heating component 15 is wrapped with the heat-conducting insulating silica gel sheet 16. The outer surface of the heat-conducting insulating silica gel sheet 16 is rigidly wrapped with the U-shaped fixing block 17. The T-shaped block 18 presses the U-shaped fixing block 17 into the water channel groove of the upper housing 1 for interference fit.

[0032] Embodiment 3;

[0033] As Figure 1-8 shown in the figure, a water channel 23 is formed between the upper housing 1, the lower housing 2, and the sealing ring 14. A liquid channel 19 is provided between the upper housing 1 and the lower housing 2. A water nozzle 20 communicating with the liquid channel 19 is provided at the bottom end of the lower housing 2. The PTC heating core 4 is located in the water channel groove. The PTC circuit fuse 9 is connected to the PTC circuit wire harness 12. The control circuit thermostat 8 is connected to the control circuit wire harness 13. The rubber plug 11 is in interference fit with the upper housing 1. A metal pressing piece 21 is provided on the rubber plug 11. A fastening screw 22 connected to the upper housing 1 is provided on the rubber plug 11.

[0034] In order to facilitate the understanding of the above technical solutions of the present utility model, the working principle or operation method of the present utility model in the actual process will be described in detail below.

[0035] In practical applications, the PTC heating component 15 is wrapped with a thermally conductive insulating silicone sheet 16 to achieve insulation and high thermal conductivity. The U-shaped fixing block 17 rigidly wraps the PTC heating component 15 with the thermally conductive insulating silicone sheet 16. The T-shaped block 18 presses the highly thermally conductive insulating heating package with the rigid wrap into the water channel groove of the upper housing 1 to achieve an interference fit. The four liquid channels 19 connect the two water nozzles 20, allowing for direct flow or diversion. The water nozzles 20 have a high radial arrangement accuracy, and the center distance between the water nozzles is 120 ± 0.15 mm. The PTC heating core 4 is placed in the water channel groove of the upper housing. When the liquid passes through the water channel, it quickly flows through the two side surfaces of the water channel wrapping the heating element, achieving efficient heat exchange. The control circuit thermostat 8 and the PTC circuit fuse 9 are placed on the upper housing 1 to collect the liquid temperature and provide over-temperature protection. The PTC circuit fuse 9 is connected to the high-voltage side PTC circuit wiring harness 12 to achieve immediate power-off in case of over-temperature on the high-voltage side, preventing damage to other components of the system. The control circuit thermostat 8 is connected to the control circuit wiring harness 13 to collect the liquid temperature and provide over-temperature protection. The silicone sealing plug has an interference fit with the cast aluminum bottom shell, and through the extrusion of the metal pressing piece, the sealing plug is closely attached to the cast aluminum bottom shell.

[0036] In summary, by means of the above technical solutions of the present invention, by using a PTC heating component as the heating element, the new housing structure combines upper and lower cast aluminum parts to form a water channel, allowing for direct flow or bypass flow; the heating element is arranged in the cast aluminum groove in contact with the coolant to achieve efficient heat exchange with the liquid; the heating element and the housing are sealed through a sealing ring; the water nozzles are radially sealed with high dimensional accuracy to ensure a center distance of 120 mm between the water nozzles; the four mounting angles are in the same direction as the water nozzles to achieve the orientation and fixation of the water nozzle installation; the thermostat is arranged on the housing as the primary over-temperature protection, and the fuse is used as the secondary over-temperature protection to avoid the risk of over-temperature; the high-low voltage wire-slinging structure, the wiring harness realizes the internal and external wiring sealing through the sealing plug, and the pressing block locks the screw to lock the sealing plug; the top is covered with a lid, and the periphery is coated with a sealing glue to seal the heating element.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A liquid heater with a radially sealed water nozzle, characterized in that, It includes an upper housing (1) and a lower housing (2). A receiving bin (3) is provided at the bottom of the upper housing (1). A PTC heating core (4) is provided in the receiving bin (3). A bus bar (5) is provided at the top of the PTC heating core (4). An epoxy board (6) is provided at the top end of the bus bar (5). A sealing cover (7) is provided at the top of the upper housing (1).

2. The liquid heater with a radially sealed water nozzle according to claim 1, characterized in that, A control circuit thermostat (8) is provided on the left side inside the upper housing (1). A PTC circuit fuse (9) connected to the bus bar (5) is provided on the right side inside the upper housing (1).

3. The liquid heater with a radially sealed water nozzle according to claim 2, characterized in that, A low-voltage connector (10) is provided on one side of the upper housing (1). A rubber plug (11) connected to the upper housing (1) is sleeved on the low-voltage connector (10). A PTC circuit wire harness (12) and a control circuit wire harness (13) are respectively connected through the rubber plug (11). A sealing ring (14) is provided between the upper housing (1) and the lower housing (2).

4. The liquid heater with a radially sealed water nozzle according to claim 3, characterized in that, The PTC heating core (4) includes a PTC heating component (15), a thermally conductive insulating silica gel sheet (16), a U-shaped fixing block (17), and a T-shaped block (18). The outer surface of the PTC heating component (15) is wrapped with the thermally conductive insulating silica gel sheet (16). The outer surface of the thermally conductive insulating silica gel sheet (16) is rigidly wrapped with the U-shaped fixing block (17). The T-shaped block (18) presses the U-shaped fixing block (17) into the water channel groove of the upper housing (1) for interference fit.

5. A liquid heater with a radially sealed water nozzle according to claim 4, characterized in that, A water channel (23) is formed among the upper housing (1), the lower housing (2), and the sealing ring (14). A liquid channel (19) is provided between the upper housing (1) and the lower housing (2). A water nozzle (20) communicated with the liquid channel (19) is provided at the bottom end of the lower housing (2). The PTC heating core (4) is located in the water channel groove.

6. The liquid heater with a radially sealed water nozzle according to claim 5, wherein, The PTC circuit fuse (9) is connected to the PTC circuit wire harness (12). The control circuit thermostat (8) is connected to the control circuit wire harness (13).

7. A liquid heater with a radially sealed water nozzle according to claim 6, wherein, The rubber plug (11) has an interference fit with the upper housing (1). A metal pressing piece (21) is provided on the rubber plug (11). A fastening screw (22) connected to the upper housing (1) is provided on the rubber plug (11).

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