Liquid heater

Abstract

The utility model belongs to the technical field of heaters, and discloses a liquid heater which comprises a shell, a vortex assembly and a heating piece, a positioning groove is formed in the shell, the shell is provided with a water flow channel, a base plate is installed on the shell, a plurality of turbulent flow columns are arranged on the base plate and form a vortex channel, and the turbulent flow columns conduct turbulent flow on cooling liquid. The vortex channel is communicated with the water flow channel, the positioning piece is arranged on the edge of the base plate, the positioning piece is clamped in the positioning groove, the limiting pressing piece is arranged on the base plate, the heating piece is installed on the shell, the heating piece abuts against the limiting pressing piece, the limiting pressing piece generates certain elastic deformation, and it is guaranteed that the vortex assembly and the end face of the shell have enough attaching force; the installation firmness of the vortex assembly in the using process is guaranteed, the design can be flexibly changed according to different boundary requirements, the design of the vortex assembly can be directly changed, the vehicle electric compressor can be better adapted to be integrated into two-in-one modularization, the universality of the heater is enhanced, and the research and development cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heater especially relates to liquid heater. BACKGROUND

[0002] With the development of new energy electric vehicle technology, higher requirements are put forward for the thermal management system of electric vehicle, and the liquid heater as the auxiliary heating equipment of the thermal management system provides heat for the passenger cabin or battery pack through heating the cooling liquid.

[0003] The existing liquid heater shell and vortex assembly are integrally cast into shape, the processing technology is complex, and the cost is higher. At the same time, the current liquid heater is gradually integrated with the vehicle electric compressor into a two-in-one modularization from single, the boundary requirements of two-in-one integration are different, so that the universality of the liquid heater boundary is limited, and the overall design of the liquid heater is changed, so that the enterprise research and development cost is higher.

[0004] Therefore, there is an urgent need for a liquid heater to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing liquid heater, can better adapt to the vehicle electric compressor and integrate into two-in-one modularization, enhance the universality of the heater, reduce the research and development cost. And, guarantee the firmness of vortex assembly installation in the use process.

[0006] In order to solve the above problems existing in the prior art, the utility model adopts the following technical scheme:

[0007] Liquid heater, comprising:

[0008] Shell, the shell is equipped with positioning slot, the shell has water flow channel;

[0009] Vortex assembly, the vortex assembly includes substrate, positioning piece, limit pressing sheet and multiple turbulence columns, the substrate is installed on the shell, multiple turbulence columns are arranged on the substrate and form vortex passage, the vortex passage is communicated with the water flow channel, the positioning piece is arranged on the edge of the substrate, and the positioning piece is clamped in the positioning slot, the limit pressing sheet is arranged on the substrate;

[0010] Heating element, the heating element is installed on the shell, and the heating element is in abutment with the limit pressing sheet.

[0011] Preferably, the limit pressing sheet includes connecting part, pressing part and bending part, the connecting part is connected to the substrate, the pressing part is in arched structure, the pressing part is connected to the connecting part and is in abutment with the heating element, the bending part is connected to the pressing part, and the bending part is pressed on the substrate.

[0012] Preferably, the liquid heater further comprises a connecting piece, the heating piece is provided with a connecting hole, the shell is provided with a mounting hole, and the connecting piece passes through the connecting hole and is connected to the mounting hole.

[0013] Preferably, the liquid heater further comprises a sealing ring, the shell is further provided with a sealing groove, the sealing ring is arranged in the sealing groove, and the sealing ring abuts against the heating piece.

[0014] Preferably, the shell is provided with a mounting groove, the vortex assembly is clamped in the mounting groove, and an inner side wall of the mounting groove is provided with the positioning groove.

[0015] Preferably, the number of the positioning pieces and the positioning grooves is multiple, multiple positioning pieces are arranged on two side edges of the base plate respectively, and multiple positioning grooves are arranged on the inner side wall of the mounting groove in a one-to-one correspondence with the multiple positioning pieces.

[0016] Preferably, the number of the limiting pressing pieces is multiple, and multiple limiting pressing pieces are arranged on the two side end faces and the middle end face of the base plate respectively.

[0017] Preferably, the base plate, the positioning pieces, the limiting pressing pieces and the spoiler column are integrally formed.

[0018] Preferably, the spoiler column comprises a main body part and a spoiler part, the spoiler part is connected to the base plate, the main body part is connected to the spoiler part, and the end part of the main body part and the spoiler part are both arranged in a rounded corner manner.

[0019] Preferably, the liquid heater further comprises a first temperature sensor and a second temperature sensor, the water flow channel comprises a water inlet flow channel and a water outlet flow channel, the first temperature sensor is arranged in the water inlet flow channel and close to the water inlet of the shell, and the second temperature sensor is arranged in the water outlet flow channel and close to the water outlet of the shell.

[0020] The liquid heater has the following advantages:

[0021] The liquid heater provided by this utility model has a positioning groove in the shell and a water flow channel. The vortex assembly includes a base plate, a positioning member, a limiting pressure plate, and multiple turbulence columns. The turbulence columns turbulent the coolant. The base plate is mounted on the shell, and the multiple turbulence columns are arranged on the base plate to form a vortex channel, which is connected to the water flow channel. The positioning member is located on the edge of the base plate and is engaged with the positioning groove. The limiting pressure plate is located on the base plate, and the heating member is mounted on the shell and abuts against the limiting pressure plate. The heating member applies positive pressure to the upper end of the limiting pressure plate, causing the limiting pressure plate to undergo a certain elastic deformation, ensuring sufficient adhesion between the vortex assembly and the end face of the shell, and ensuring the firmness of the vortex assembly during use. On the one hand, the vortex assembly facilitates the uniform distribution of coolant flow in the water flow channel, reduces the total thermal resistance of heat exchange, improves the heating efficiency of the heater, and reduces the probability of heating film ablation and the risk of liquid heater failure. On the other hand, the parts are simple to process, easy to implement and easy to assemble. This assembly and fixing method allows for flexible design changes according to different boundary requirements. The design of the eddy current assembly can be directly changed, better adapting to automotive electric compressors for integration into a two-in-one modular design. This enhances the versatility of the heater, reduces R&D costs, and helps the water channel achieve complete venting under low temperature and low flow conditions of coolant, thus expanding the stable operating range of the liquid heater. Attached Figure Description

[0022] Figure 1 An explosion diagram of a liquid heater provided in an embodiment of this utility model;

[0023] Figure 2 A first structural schematic diagram of the housing provided in an embodiment of this utility model;

[0024] Figure 3 A second structural schematic diagram of the housing provided in an embodiment of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the eddy current assembly provided in an embodiment of the present utility model;

[0026] Figure 5 A schematic diagram of the positioning groove provided in an embodiment of this utility model;

[0027] Figure 6 This is a partial schematic diagram of the eddy current assembly provided in an embodiment of the present invention.

[0028] Figure label:

[0029] 1. Housing; 11. Positioning groove; 12. Water flow channel; 121. Inlet water flow channel; 122. Outlet water flow channel; 13. Mounting hole; 14. Sealing groove; 15. Mounting groove; 16. Water inlet; 17. Water outlet;

[0030] 2, vortex assembly; 21, base plate; 22, positioning member; 23, limiting pressing sheet; 231, connecting part; 232, pressing part; 233, bending part; 24, turbulence column; 241, main body part; 242, turbulence part; 25, vortex channel;

[0031] 3, heating piece; 31, connecting hole;

[0032] 4, connecting piece;

[0033] 5, sealing ring;

[0034] 6, first temperature sensor;

[0035] 7, second temperature sensor. DETAILED DESCRIPTION

[0036] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0037] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0040] As Figures 1-6As shown, in the embodiment, the liquid heater comprises a shell 1, a vortex assembly 2 and a heating piece 3. The shell 1 is provided with a positioning groove 11, and the shell 1 has a water flow channel 12. The vortex assembly 2 comprises a base plate 21, a positioning piece 22, a limiting pressing plate 23 and a plurality of turbulence columns 24. The base plate 21 is installed on the shell 1. The plurality of turbulence columns 24 are arranged on the base plate 21 and form a vortex channel 25. The vortex channel 25 is arranged in communication with the water flow channel 12. The positioning piece 22 is arranged at the edge of the base plate 21 and is clamped in the positioning groove 11. The limiting pressing plate 23 is arranged on the base plate 21. The heating piece 3 is installed on the shell 1 and abuts against the limiting pressing plate 23. Specifically, the edge of the base plate 21 is provided with the positioning piece 22. The positioning groove 11 is formed in the top surface of the shell 1. The base plate 21 is clamped and fixed on the shell 1 by the positioning piece 22 and the positioning groove 11, so as to position the vortex assembly 2. The base plate 21 is provided with the plurality of turbulence columns 24 which are staggered and arranged to disturb the cooling liquid. The end surface of the base plate 21 is provided with the limiting pressing plate 23. In the non-assembled state, the height of the limiting pressing plate 23 is slightly higher than the end surface of the base plate 21. In the assembled state, the heating piece 3 is installed and fixed on the shell 1. The vortex assembly 2 is clamped between the heating piece 3 and the shell 1. The heating piece 3 is composed of a screen-printed insulating film layer, a heating resistance film, a conductive medium film layer and an insulating film layer on a stainless steel heating plate. The heating piece 3 applies a positive pressure to the upper end of the limiting pressing plate 23. The limiting pressing plate 23 is elastically deformed to ensure that the vortex assembly 2 and the end surface of the shell 1 have sufficient close contact force. In addition, the stability of the installation of the vortex assembly 2 during use is ensured. The shell 1 is provided with a water inlet 16 and a water outlet 17. The water flow channel 12 of the shell 1 comprises a water inlet flow channel 121, a throttling water channel and a water outlet flow channel 122. The cooling liquid enters the water inlet flow channel 121 and the throttling water channel from the water inlet 16 of the shell 1 in sequence, and then flows into the vortex channel 25 of the vortex assembly 2. The turbulence columns 24 disturb the cooling liquid. Then, the cooling liquid flows into the throttling water channel and the water outlet flow channel 122. Finally, the cooling liquid flows out from the water outlet 17. On the one hand, the vortex assembly 2 is beneficial to the uniform distribution of the flow of the cooling liquid in the water flow channel 12, reduces the total heat transfer resistance, improves the heating efficiency of the heater, reduces the ablation probability of the heating film and the risk of failure of the liquid heater. On the other hand, the part processing technology is simple, easy to realize and easy to assemble. The assembly and fixing method can be flexibly changed according to different boundary requirements. The design of the vortex assembly 2 can be directly changed to better adapt to the integration of the electric compressor for a two-in-one modularization, enhance the universality of the heater, reduce the enterprise research and development cost, and facilitate the water flow channel 12 to meet the complete exhaust requirement under the low-temperature small-flow condition of the cooling liquid, and expand the stable operation range of the liquid heater.

[0041] Further, with reference to Figures 1-6The limiting pressing sheet 23 includes a connecting portion 231, a pressing portion 232 and a bending portion 233. The connecting portion 231 is connected to the base plate 21. The pressing portion 232 has an arc structure. The pressing portion 232 is connected to the connecting portion 231 and abuts against the heating element 3. The bending portion 233 is connected to the pressing portion 232 and abuts against the base plate 21. Specifically, the limiting pressing sheet 23 has an arc structure as a whole. The connecting portion 231 of the limiting pressing sheet 23 is connected to the base plate 21. The bending portion 233 of the limiting pressing sheet 23 is not connected to the base plate 21. The upper end of the pressing portion 232 has a circular arc surface, which is beneficial to uniform force of the heating element 3 on the limiting pressing sheet 23. In the assembled state, the heating sheet applies a positive pressure to the pressing portion 232. The limiting pressing sheet 23 is elastically deformed to make the bending portion 233 abut against the base plate 21, so as to ensure that the end surface of the eddy current assembly 2 and the end surface of the shell 1 have sufficient close contact force, and the position relationship between the two is more reasonable and firm. Preferably, the number of the limiting pressing sheets 23 is multiple. The multiple limiting pressing sheets 23 are arranged on the two side end surfaces and the middle end surface of the base plate 21. In the embodiment, at least four limiting pressing sheets 23 are arranged on the two side end surfaces of the base plate 21. At least two limiting pressing sheets 23 are arranged on the middle end surface of the base plate 21. The thickness of the limiting pressing sheet 23 is consistent with the thickness of the base plate 21, which is controlled to be about 0.5 mm.

[0042] Further, with reference to Figures 1-6 The liquid heater further includes a connecting piece 4. The heating element 3 is provided with a connecting hole 31. The shell 1 is provided with a mounting hole 13. The connecting piece 4 passes through the connecting hole 31 and is connected to the mounting hole 13. Specifically, the connecting piece 4 is a bolt. The heating element 3 is fixedly assembled on the shell 1 through the connecting piece 4. The number of the connecting pieces 4 is not less than eight. The liquid heater further includes a sealing ring 5. The shell 1 is further provided with a sealing groove 14. The sealing ring 5 is arranged in the sealing groove 14 and abuts against the heating element 3. The sealing ring 5 is a rubber sealing piece. When the connecting piece 4 is tightened, the axial force of the connecting piece 4 has a pressing effect on the heating element 3. At the same time, the heating element 3 also has a pressing effect on the circular arc surface of the pressing portion 232 of the limiting pressing sheet 23 and the sealing ring 5. The sealing ring 5 is deformed by the pressing, so that the heating element 3 and the shell 1 have good sealing effect. Therefore, the shell 1, the eddy current assembly 2, the sealing piece and the heating element 3 form a liquid heater flow channel with good sealing effect.

[0043] Further, with reference to Figures 1-6The shell 1 is provided with a mounting groove 15, and the vortex assembly 2 is clamped in the mounting groove 15. The inner side wall of the mounting groove 15 is provided with a positioning groove 11. Specifically, the upper end face of the shell 1 is provided with the mounting groove 15, the size of the base plate 21 matches the size of the mounting groove 15, the inner side wall of the mounting groove 15 is provided with the positioning groove 11, and the positioning groove 11 is clamped with the positioning piece 22, so that the vortex assembly 2 is firmly installed on the shell 1, and the split design facilitates flexible design according to different boundary requirements. The design of the vortex assembly 2 can be directly changed, and the liquid heater is better adapted to the integration of the vehicle electric compressor into a two-in-one modularization, thereby enhancing the versatility of the liquid heater. Preferably, the number of positioning pieces 22 and positioning grooves 11 is multiple, the multiple positioning pieces 22 are respectively arranged on the two side edges of the base plate 21, and the multiple positioning grooves 11 are arranged on the inner side wall of the mounting groove 15 and correspond to the multiple positioning pieces 22 one by one. In this embodiment, at least two positioning grooves 11 are arranged on both sides of the shell 1 along the flow direction of the cooling liquid, and the corresponding positions of the two sides of the base plate 21 are also provided with positioning pieces 22 equal in number to the positioning grooves 11. The positioning is accurate, and the installation is more stable.

[0044] Further, with reference to Figures 1-6 , the base plate 21, the positioning piece 22, the limiting pressing sheet 23 and the turbulence column 24 are integrally formed. Specifically, the vortex assembly 2 is integrally formed by casting, stamping or the like, thereby reducing the assembly cost and being well adapted to the shell 1 of multiple liquid heaters and integrated into a two-in-one modularization of the vehicle heater, thereby being high in versatility.

[0045] Further, with reference to Figures 1-6 , the turbulence column 24 includes a main body part 241 and a turbulence part 242, the turbulence part 242 is connected to the base plate 21, and the main body part 241 is connected to the turbulence part 242. The end of the main body part 241 and the turbulence part 242 are both provided with a rounded corner. Specifically, the rounded corner design is conducive to smooth flow of the cooling liquid. Under the action of multiple turbulence columns 24, the cooling liquid in the water flow channel 12 forms strong turbulence, the continuous vortex structure strengthens the mixing of the liquid in the main flow channel, reduces the total heat resistance of heat exchange, and improves the heating efficiency of the liquid heater. Optionally, the number, size and staggered arrangement of the turbulence columns 24 can be adjusted according to actual conditions, and details are not described herein.

[0046] Further, with reference to Figures 1-6The liquid heater further comprises a first temperature sensor 6 and a second temperature sensor 7, the water flow channel 12 comprises a water inlet flow channel 121 and a water outlet flow channel 122, the first temperature sensor 6 is arranged on the water inlet flow channel 121 and close to the water inlet 16 of the shell 1, and the second temperature sensor 7 is arranged on the water outlet flow channel 122 and close to the water outlet 17 of the shell 1. Specifically, the positions of the water inlet 16 and the water outlet 17 can be adjusted according to the situation, and can be arranged on the same side, left and right, top and right, top and left and the like of the shell 1. The arrangement direction of the first temperature sensor 6 should be close to the water inlet 16 of the shell 1 as much as possible, and the first mounting hole 13 is arranged on the outer wall side of the water inlet flow channel 121 of the shell 1, and the first temperature sensor 6 is arranged in the first mounting hole 13, and the arrangement direction of the second temperature sensor 7 should be close to the water outlet 17 of the shell 1 as much as possible, and the second mounting hole 13 is arranged on the outer wall side of the water outlet flow channel 122 of the shell 1, and the second temperature sensor 7 is arranged in the second mounting hole 13, so as to accurately monitor the temperature of the cooling liquid of the water inlet 16 and the water outlet 17. The width of the water inlet flow channel 121 can be adjusted by changing the distance between the water inlet end of the vortex assembly 2 and the side of the water inlet flow channel 121 of the shell 1, and the width of the water outlet flow channel 122 can be adjusted by changing the distance between the water outlet end of the vortex assembly 2 and the side of the water outlet flow channel 122 of the shell 1, and the maximum is not more than 4mm, and in the low-temperature small-flow working condition, the cooling liquid has a large flow rate in a small flow area, which is beneficial to the complete exhaust of the liquid heater without bubble aggregation.

[0047] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be carried out without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made in the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A liquid heater characterised in that, The liquid heater comprises: a shell (1) provided with a positioning groove (11), and having a water flow channel (12); a vortex assembly (2) comprising a base plate (21), a positioning piece (22), a limiting pressing plate (23) and a plurality of turbulence columns (24), the base plate (21) being installed on the shell (1), the plurality of turbulence columns (24) being arranged on the base plate (21) and forming a vortex channel (25) in communication with the water flow channel (12), the positioning piece (22) being arranged at the edge of the base plate (21) and being clamped in the positioning groove (11), and the limiting pressing plate (23) being arranged on the base plate (21); a heating piece (3) installed on the shell (1) and abutting against the limiting pressing plate (23).

2. The liquid heater of claim 1, wherein, The limiting pressing plate (23) comprises a connecting portion (231), a pressing portion (232) and a bending portion (233), the connecting portion (231) being connected to the base plate (21), the pressing portion (232) being in an arc structure, the pressing portion (232) being connected to the connecting portion (231) and abutting against the heating piece (3), and the bending portion (233) being connected to the pressing portion (232) and being pressed against the base plate (21).

3. The liquid heater of claim 1, wherein, The liquid heater further comprises a connecting piece (4), the heating piece (3) is provided with a connecting hole (31), the shell (1) is provided with a mounting hole (13), and the connecting piece (4) passes through the connecting hole (31) and is connected to the mounting hole (13).

4. The liquid heater of claim 1, wherein, The liquid heater further comprises a sealing ring (5), the shell (1) is further provided with a sealing groove (14), the sealing ring (5) is arranged in the sealing groove (14) and abuts against the heating piece (3).

5. The liquid heater of claim 1, wherein, The shell (1) is provided with a mounting groove (15), the vortex assembly (2) is clamped in the mounting groove (15), and the inner side wall of the mounting groove (15) is provided with the positioning groove (11).

6. The liquid heater of claim 5, wherein, The number of the positioning piece (22) and the positioning groove (11) is multiple, the plurality of positioning pieces (22) are respectively arranged at the two side edges of the base plate (21), and the plurality of positioning grooves (11) are arranged at the inner side wall of the mounting groove (15) and correspond to the plurality of positioning pieces (22) one by one.

7. The liquid heater of claim 1, wherein, The number of the limiting pressing plate (23) is multiple, and the plurality of limiting pressing plates (23) are respectively arranged at the two side end faces and the middle end face of the base plate (21).

8. The liquid heater of claim 1, wherein, The base plate (21), the positioning piece (22), the limiting pressing plate (23) and the turbulence column (24) are integrally formed.

9. The liquid heater of claim 1, wherein, The spoiler column (24) comprises a main body part (241) and a spoiler part (242), the spoiler part (242) is connected to the base plate (21), the main body part (241) is connected to the spoiler part (242), and the end of the main body part (241) and the spoiler part (242) are both provided with a rounded corner.

10. The liquid heater of claim 1, wherein, The liquid heater further comprises a first temperature sensor (6) and a second temperature sensor (7), the water flow channel (12) comprises a water inlet flow channel (121) and a water outlet flow channel (122), the first temperature sensor (6) is arranged in the water inlet flow channel (121) and close to the water inlet (16) of the shell (1), and the second temperature sensor (7) is arranged in the water outlet flow channel (122) and close to the water outlet (17) of the shell (1).

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