CN216161808U

CN216161808U - Liquid heater of good extension

Info

Publication number: CN216161808U
Application number: CN202121621588.4U
Authority: CN
Inventors: 黄明峰; 曾利
Original assignee: Wuhu Hantewei Electric Heating Co ltd
Current assignee: Wuhu Hantewei Electric Heating Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-04-01
Anticipated expiration: 2031-07-16

Abstract

The utility model discloses a well-expanded liquid heater, which comprises a section outer cavity, wherein a water flow channel assembly and a heating core body are embedded in a staggered manner, and the installation direction of the heating core body is mutually vertical or parallel to the expansion direction of the water flow channel assembly; the water flow channel assembly comprises a rear converging cavity, a front converging cavity and flat pipe flow channels, the rear converging cavity and the front converging cavity are fixedly connected and communicated through a plurality of rows and columns of flat pipe flow channels, and a partition plate is arranged in the front converging cavity. According to the utility model, the plurality of heating cores are embedded in the gaps among the plurality of rows and columns of flat tube runners from the direction perpendicular to or parallel to the extension direction of the flat tube runners, so that the heating effect of the liquid heater is improved, the manufacturing difficulty of the internal structure of the liquid heater is reduced, the production and assembly speed is increased, and the manufacturing cost is reduced; the water flow channel assembly is fixed on the mounting table on the inner wall of the outer cavity of the sectional material through the elastic fastener, so that the service life of the liquid heater is prolonged.

Description

Liquid heater of good extension

Technical Field

The utility model relates to the field of new energy automobiles, in particular to a liquid heater with good expansion.

Background

In the technical field of new energy vehicles, electric vehicles generally use a power battery pack as a power source, and the power battery pack is usually a lithium battery pack. In order to ensure the normal use of the electric automobile, the power battery pack needs to be heated in a low-temperature environment. Unlike fuel oil vehicle which produces heat source by means of its own fuel engine, the electric vehicle cannot provide heat source for the power battery pack and also cannot provide hot air heat source for air conditioning, defrosting and the like because it has no power device for producing heat source.

In order to realize the heating function of an electric automobile, a liquid heater is generally adopted to provide a heat source, most of the existing liquid heaters are provided with a heating body in flowing liquid, Chinese patent (CN201720179700.0) discloses a novel new energy automobile liquid heater, a combined structure with multiple layers of PTC heating cores stacked is adopted, water flow is concentrated in the middle part, air is easier to be exhausted during debugging, the flow rate of the water flow in each water pipe can be ensured to be more uniform, the two sides of the PTC heating core are respectively provided with water pipes, wedge-shaped aluminum profiles are compressed, the heat dissipation is more sufficient, but certain difficulty is brought to the manufacturing and installation of the heating unit and the water pipes, the manufacturing cost is higher, the heating unit cannot be modified according to the power of the heating body, the expansibility is insufficient, and the universality is poor.

The traditional liquid heater capable of solving the problem of expansibility of an internal heating area, and Chinese patent (CN201922293172.3) discloses a waterproof type liquid heater for an automobile with good expansibility, wherein a liquid flow cavity body prepared from sectional materials is arranged, the sectional materials can be cut into different lengths according to the power of a heating core body, so that the reduction of the mold cost is realized, the problem of insufficient expansibility is solved, the production cost is reduced, and the volume is smaller.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art and provide a liquid heater with good expansion.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a liquid heater with good expansion comprises a section outer cavity, wherein a rear sealing end cover and a front sealing end cover are sealed at two ends of the section outer cavity, a water flow channel assembly and a plurality of heating cores are arranged on the inner side of the section outer cavity, two ends of each heating core are electrically connected with a power supply, the water flow channel assembly and the heating cores are embedded in a staggered mode, and the installation direction of the heating cores is perpendicular to or parallel to the expansion direction of the water flow channel assembly;

the water flow channel assembly comprises a rear converging cavity, a front converging cavity and flat pipe runners, the rear converging cavity and the front converging cavity are fixedly connected and communicated through the flat pipe runners in multiple rows and multiple columns, the heating core bodies are embedded between the flat pipe runners in a staggered mode, two water inlet and outlet pipes are arranged at the front end of the front converging cavity, and a partition plate is arranged inside the front converging cavity.

In some embodiments, a positioning mounting plate is fixedly mounted at the top ends of the rear manifold cavity and the front manifold cavity, a controller is fixedly mounted on the top surface of the positioning mounting plate, and the output end of the controller is electrically connected with the input end of the heating core body.

In some embodiments, the inside of preceding converging cavity is separated into left cavity and right cavity through the division board, left side cavity and right cavity respectively with two business turn over water pipe through connection, flat pipe runner includes flat pipe runner in right side and the flat pipe runner in left side, the both ends of the flat pipe runner in left side converge the chamber through connection with left cavity and back respectively, the both ends of the flat pipe runner in right side converge the chamber through connection with right cavity and back respectively.

In some embodiments, the top ends of the two sides of the positioning and mounting plate are provided with positioning plate mounting positions, the two sides of the inner wall of the outer cavity of the profile are provided with mounting tables, the mounting tables are provided with fastening mounting positions, and the water channel assembly is fixedly mounted at the inner sides of the fastening mounting positions and the positioning plate mounting positions through fasteners.

In some embodiments, the fastener is an elastic material member.

Further, in some embodiments, the sum of the internal cross-sectional areas of the left flat tube flow channels ranges from 150 square millimeters to 490 square millimeters, and the sum of the internal cross-sectional areas of the right flat tube flow channels is greater than 10% to 30% of the sum of the internal cross-sectional areas of the left flat tube flow channels.

Further, in some embodiments, the width direction dimension of the left-side flat tube flow channel and the right-side flat tube flow channel is preferably greater than the total thickness dimension of the flat tube flow channels in the row number direction.

Further, in some embodiments, the number of rows of the flat tube runners ranges from 4 to 8, and the number of columns of the flat tube runners ranges from 2 to 4.

Further, in some embodiments, an elastic waterproof membrane is fixedly connected between the mounting tables, and the elastic waterproof membrane is arranged between the positioning mounting plate and the controller.

Further, in some embodiments, the width direction of the flat tube flow channel is parallel to the longest side of the rear manifold cavity and the longest side of the front manifold cavity.

Compared with the prior art, the utility model has the beneficial effects that:

1. through in the flat pipe runner clearance of multirow multiseriate, from the direction embedding a plurality of heating cores that are mutually perpendicular or parallel with flat pipe runner extending direction, make the liquid that flows in the rivers way subassembly fully contact the heating core in flat pipe runner region, improved liquid heater's heating effect, and reduced liquid heater inner structure's the preparation degree of difficulty for production assembly speed has reduced manufacturing cost.

2. The water flow channel assembly is fixed on the mounting table of the inner wall of the outer cavity of the sectional material through the elastic fastener, so that the fixing state of the water flow channel assembly in the outer cavity of the sectional material has flexibility, the structural damage of the liquid heater caused by the internal temperature difference during working is avoided, and the service life of the liquid heater is prolonged.

3. Through setting up the rivers way subassembly including back converging chamber, preceding converging chamber and flat tub of runner to and the controller of rivers way subassembly top installation, make liquid heater interior liquid flow region separate with the circular telegram structure, restricted the movement path of liquid, effectively improved the waterproof performance of internal control ware, reduced the rust-ization speed of inside metal structure.

4. The flat pipe runners in multiple rows and multiple columns and the profile outer cavity formed by cutting and processing the profile are arranged, so that the cutting length of the flat pipe runners and the profile outer cavity can be changed according to different powers of the heating core body in the manufacturing process, the expansibility on the structural length is realized, the actual production requirement is met, and the universality of the liquid heater is improved.

Drawings

FIG. 1 is an exploded view of the overall structure of the present invention;

FIG. 2 is a perspective partial cross-sectional view of the water flow passage assembly of the present invention;

FIG. 3 is a schematic diagram of the position of the external cavity internal structure of the profile of the present invention;

FIG. 4 is a schematic view of the installation of the water flow channel assembly and heating core of the present invention;

in the figure: 1. sealing the end cover at the back; 2. a profile outer cavity; 21. an installation table; 211. fastening the mounting position; 3. a water flow passage assembly; 31. a rear convergence cavity; 32. a front manifold chamber; 33. a flat pipe flow channel; 331. a right flat tube runner; 332. a left flat pipe runner; 34. a water inlet pipe and a water outlet pipe; 35. a partition plate; 36. positioning the mounting plate; 361. a positioning plate mounting position; 4. heating the core; 5. a front seal end cap; 6. a controller; 7. a fastener.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-4, an expandable liquid heater includes a profile outer cavity 2, a rear end cover 1 and a front end cover 5 are sealed at two ends of the profile outer cavity 2, a water flow channel assembly 3 and a plurality of heating cores 4 are arranged at the inner side of the profile outer cavity 2, two ends of the heating cores 4 are electrically connected with a power supply, the water flow channel assembly 3 and the heating cores 4 are embedded in a staggered manner, and the installation direction of the heating cores 4 is perpendicular to or parallel to the expansion direction of the water flow channel assembly 3;

the water flow channel assembly 3 comprises a rear confluence cavity 31, a front confluence cavity 32 and flat pipe flow channels 33, the rear confluence cavity 31 and the front confluence cavity 32 are fixedly connected and communicated through the flat pipe flow channels 33 in multiple rows and multiple columns, a plurality of heating core bodies 4 are embedded between the flat pipe flow channels 33 in a staggered mode, the front end of the front confluence cavity 32 is provided with two water inlet and outlet pipes 34, and the inside of the front confluence cavity 32 is provided with a partition plate 35.

The flat pipe runner 33 of multirow multiseriate inlays the setting mutually with the crisscross of heating core 4, make the liquid that flows in the rivers way subassembly at the regional abundant heating core of contact of flat pipe runner, the heating effect has been improved, flat pipe runner 33 expanding direction sets up with the perpendicular of heating core 4 installation direction, the production assembly of the liquid heater of being convenient for, the preparation degree of difficulty and cost have been reduced, the production efficiency is improved, the structure setting of rivers way subassembly 3, the motion route of liquid has been restricted, be favorable to improving the waterproof performance of heating effect and circular telegram structure.

As shown in fig. 2, the positioning mounting plate 36 is fixedly mounted at the top ends of the rear manifold cavity 31 and the front manifold cavity 32, the controller 6 is fixedly mounted on the top surface of the positioning mounting plate 36, and the output end of the controller 6 is electrically connected with the input end of the heating core 4. Preceding converging cavity 32's inside is separated into left cavity and right cavity through division board 35, and left cavity and right cavity are respectively with two business turn over water pipe 34 through connections, and flat tub of runner 33 includes right side flat tub of runner 331 and left side flat tub of runner 332, and the both ends of left side flat tub of runner 332 converge chamber 31 through connections with left cavity and back respectively, and the both ends of right side flat tub of runner 331 converge chamber 31 through connections with right cavity and back respectively.

Division board 35's setting, make liquid all restrict in the back chamber 31 that converges at the inside motion route of liquid heater, the inside of preceding chamber 32 and flat tub of runner 33 that converges, water flow channel subassembly 3's space utilization has effectively been improved, the volume occupied of water flow channel subassembly 3 has been reduced, converge chamber 32 left cavity before liquid flows in from the water inlet, through left side flat tub of runner 332, converge chamber 31 back follow right side flat tub of runner 331 and flow into preceding chamber 32 right cavity that converges after the process, flow from the delivery port again, the heating core 4 has been embedded between the flat tub of runner 33 of multirow multiseriate, generate heat after 4 circular telegrams through the heating core, with leading-in to flat tub of runner 33 of heat, liquid can be heated when flowing through the flat pipe.

As shown in fig. 3, positioning plate mounting positions 361 are arranged at top ends of two sides of the positioning mounting plate 36, mounting platforms 21 are arranged at two sides of the inner wall of the outer cavity 2 of the profile, fastening mounting positions 211 are arranged on the mounting platforms 21, and the water flow channel assembly 3 is fixedly mounted at inner sides of the fastening mounting positions 211 and the positioning plate mounting positions 361 through fasteners 7.

The fastening installation position 211, the positioning plate installation position 361 and the fastening piece 7 are arranged, so that the fastening piece 7 fixes the water flow channel component 3 and the outer cavity 2 of the sectional material tightly through self expansion force, the temperature difference exists between the water flow channel component 3 and the shell and between the front converging cavity and the rear converging cavity in the working process of the liquid heater, the joint of the middle flat pipe can crack due to the deformation caused by expansion with heat and contraction with cold, and the dead water flow channel component 3 and the outer cavity 2 of the sectional material cannot be fixed by adopting a rigid material fastening piece.

The fastening piece 7 is an elastic material component, the fastening piece 7 made of elastic material enters between the fastening installation position 211 and the positioning plate installation position 361 in a pressurizing and pressing mode, the water flow channel assembly and the shell are tightly fixed through expansion force of the fastening piece 7, axial movement of the water flow channel assembly 3 in the outer cavity 2 of the sectional material is limited through the sealed rear sealing end cover 1 and the sealed front sealing end cover 5, acting force on the flat pipe flow channel 33 can be reduced through elastic deformation when the sectional material expands with heat and contracts with cold, and the tensile crack of the joint of the flat pipe flow channel 33 and the confluence cavity is prevented.

The fastener 7 can have certain deformation when expend with heat and contract with cold, as long as guarantee that the connected mode of fastener 7 is non-close connection, consequently the fastener 7 can select for use elastic pin or elastic shell fragment.

When the liquid heater is manufactured, the length of the flat pipe flow channel 33 can be changed to adapt to different power levels of the heating core 4, the outer cavity of the sectional material is obtained by cutting the sectional material, the length direction of the sectional material is conveniently expanded by cutting different lengths, and the universality of the liquid heater is improved.

Example 2

A well-expanded liquid heater is improved on the basis of embodiment 1:

the sum of the internal cross-sectional areas of the left flat tube runner 332 is 150 mm to 490 mm, and the sum of the internal cross-sectional areas of the right flat tube runner 331 is greater than 10% to 30% of the sum of the internal cross-sectional areas of the left flat tube runner 332.

The range of the total internal cross-sectional area of the left flat-tube runner 332 is set to reduce the internal water resistance, and the selection of the specific total cross-sectional area depends on the sizes of different inlet pipe diameters, for example, the total internal cross-sectional area of 220 square millimeters is preferentially selected for the 20 inlet outer pipe diameter, and the total internal cross-sectional area of 450 square millimeters is preferentially selected for the 25 inlet outer pipe diameter, and the average temperature of the liquid in the right flat-tube runner 331 after being heated is higher than the average temperature of the liquid in the left flat-tube runner 332, so that the pressure and the water resistance are both increased, and the total internal cross-sectional area of the right flat-tube runner 331 is 10% to 30% larger than the total internal cross-sectional area of the left flat-tube runner 332.

The width direction size of the left flat tube runner 332 and the right flat tube runner 331 is preferably larger than the total thickness size of the flat tube runners 33 in the row number direction, which is favorable for converging and expanding.

Further, the range of the number of rows of the flat tube runners 33 is 4-8, and the range of the number of rows of the flat tube runners 33 is 2-4.

Based on the numerical range of the total area of the internal sections, the range of the row number of the flat tube runners 33 is 4-8, the range of the row number of the flat tube runners 33 is 2-4, and when the row number is larger than two, the front and rear converging cavities are required to be provided with converging cavity partition plates for separation.

Example 3

A well-expanded liquid heater is improved on the basis of embodiment 2: an elastic waterproof membrane is fixedly connected between the mounting tables 21 and arranged between the positioning mounting plate 36 and the controller 6.

Due to the arrangement of the elastic waterproof membrane, water drops generated by temperature difference after the inner work of the outer cavity 2 of the sectional material are separated from the controller, so that the controller is not contacted with water vapor, and the service life of the controller is prolonged.

Example 4

A well-expanded liquid heater is improved on the basis of embodiment 2: the width direction of the flat tube runner (33) is parallel to the longest edges of the rear confluence cavity 31 and the front confluence cavity 32.

The parallel arrangement of flat pipe runner 33 broadside and the longest limit of chamber that converges makes the area of contact maximize of heating core 4 and flat pipe runner 33, has reduced the radical of heating core 4, has effectively reduced liquid heater's use cost, has further improved heating efficiency.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A liquid heater which is easy to expand comprises a section outer cavity (2), wherein a rear sealing end cover (1) and a front sealing end cover (5) are sealed at two ends of the section outer cavity (2), a water flow channel assembly (3) and a plurality of heating cores (4) are arranged on the inner side of the section outer cavity (2), and two ends of each heating core (4) are electrically connected with a power supply;

rivers say subassembly (3) including back converging chamber (31), preceding converging chamber (32) and flat tube runner (33), converge between chamber (31) and the preceding converging chamber (32) through multirow multiseriate flat tube runner (33) fixed connection and link up, a plurality of after, heat core (4) crisscross inlay in between flat tube runner (33), the front end of preceding converging chamber (32) is provided with two business turn over water pipe (34), the inside of preceding converging chamber (32) is provided with division board (35).

2. The liquid heater of claim 1, wherein a positioning mounting plate (36) is fixedly mounted at the top ends of the rear confluence cavity (31) and the front confluence cavity (32), a controller (6) is fixedly mounted on the top surface of the positioning mounting plate (36), and the output end of the controller (6) is electrically connected with the input end of the heating core (4).

3. The liquid heater who expands well of claim 1, characterized in that, the inside of preceding converging cavity (32) is separated into left cavity and right cavity through division board (35), left cavity and right cavity respectively with two business turn over water pipe (34) through connection, flat tub of runner (33) include right side flat tub of runner (331) and left side flat tub of runner (332), the both ends of left side flat tub of runner (332) respectively with left cavity and back converging cavity (31) through connection, the both ends of right side flat tub of runner (331) respectively with right cavity and back converging cavity (31) through connection.

4. The liquid heater of claim 2, wherein the top ends of the two sides of the positioning mounting plate (36) are provided with positioning plate mounting positions (361), the two sides of the inner wall of the outer profile cavity (2) are provided with mounting platforms (21), the mounting platforms (21) are provided with fastening mounting positions (211), and the water flow channel assembly (3) is fixedly mounted on the inner sides of the fastening mounting positions (211) and the positioning plate mounting positions (361) through fasteners (7).

5. The well-extended liquid heater according to claim 4, characterized in that the fastening member (7) is an elastic material member.

6. The liquid heater of claim 3, wherein the sum of the internal cross-sectional areas of the left flat tube flow channels (332) is in the range of 150 mm to 490 mm, and the sum of the internal cross-sectional areas of the right flat tube flow channels (331) is greater than 10% to 30% of the sum of the internal cross-sectional areas of the left flat tube flow channels (332).

7. The liquid heater of claim 3, wherein the width-wise dimension of the left-hand flat tube flow channel (332) and the right-hand flat tube flow channel (331) is preferably greater than the total thickness dimension in the row direction of the flat tube flow channels (33).

8. The well-expanded liquid heater according to claim 1, characterized in that the number of rows of the flat tube flow channels (33) is in the range of 4-8, and the number of columns of the flat tube flow channels (33) is in the range of 2-4.

9. The liquid heater of claim 4, wherein an elastic waterproof membrane is fixedly connected between the mounting platforms (21), and is arranged between the positioning mounting plate (36) and the controller (6).

10. The liquid heater according to claim 1, characterized in that the width direction of the flat tube flow channel (33) is parallel to the longest sides of the rear collecting chamber (31) and the front collecting chamber (32).