Automobile warm air core assembly with exhaust pipe

Abstract

The automobile warm air core assembly comprises two main pieces arranged in parallel, an upper water chamber and a lower water chamber are arranged on the sides, away from each other, of the two main pieces correspondingly, and a water inlet cavity and a water outlet cavity are formed in the upper water chamber in a separated mode; an exhaust pipe, a water inlet pipe communicated with the water inlet cavity and a water outlet pipe communicated with the water outlet cavity are arranged on the upper water chamber; a plurality of first flat pipes and a plurality of second flat pipes are arranged between the two main pieces, the two ends of each first flat pipe penetrate through the two main pieces and are communicated with the water inlet cavity and the lower water chamber respectively, and the two ends of each second flat pipe penetrate through the two main pieces and are communicated with the water outlet cavity and the lower water chamber respectively; a plurality of fins connected with the first flat pipes and the second flat pipes are further arranged between the two main pieces. By means of the series connection structure of the first flat pipe and the second flat pipe, the design of the cavity-divided upper water chamber and optimization of the exhaust pipe, efficient heat exchange and stable operation are achieved, and the problems that an existing automobile warm air core assembly generally does not have an exhaust function, and the heating effect of the warm air core assembly is affected are effectively solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile air conditioner parts, in particular to an automobile heater core assembly with an exhaust pipe. BACKGROUND

[0002] The automobile heater core assembly is a core heating component of an automobile air conditioning system, and is internally provided with a circulating flow channel to realize heat exchange with air through forced circulation of engine coolant.

[0003] In the related art, a patent with the application number CN202421237358.1 proposes a novel automobile heater side plate structure and a heater core assembly. The heater side plate structure comprises an upper side plate and a lower side plate, the thicknesses of the upper side plate and the lower side plate are both less than 0.8 mm, the upper side plate and the lower side plate are respectively provided with reinforcing ribs along the length directions thereof, and the upper side plate and the lower side plate are respectively provided with fin pressing ribs distributed at equal intervals along the length directions thereof. The heater core assembly comprises the heater side plate structure as the upper and lower side plates. The technical scheme of the utility model can realize lightweight production of the heater core assembly, the overall strength and rigidity of the core body are met, the manufacturing cost is lower, and the installation is more convenient and the assembly efficiency is high.

[0004] The related art in the above has the following defects: in the actual use process of the heater core assembly, air is easily accumulated in the heater core, air resistance is formed, the existence of the air resistance seriously affects the normal circulation of the coolant in the heater core, the heating effect of the heater core assembly is poor, the temperature in the vehicle is slowly raised, and even the phenomenon of local overheating or overcooling occurs. In winter, this can cause the defrosting and demisting ability of the windshield to decrease, affect the driving vision, and exist safety hazards. UTILITY MODEL CONTENT

[0005] In order to improve the problem that the existing automobile heater core assembly generally has no exhaust function and affects the heating effect of the heater core assembly, the application provides an automobile heater core assembly with an exhaust pipe.

[0006] The automobile heater core assembly with an exhaust pipe provided by the application adopts the following technical scheme:

[0007] The automobile heater core assembly with an exhaust pipe comprises two main pieces arranged in parallel, upper and lower water chambers are arranged on the sides of the two main pieces away from each other, a water inlet cavity and a water outlet cavity are arranged in the upper water chamber, an exhaust pipe, a water inlet pipe communicating with the water inlet cavity and a water outlet pipe communicating with the water outlet cavity are arranged on the upper water chamber.

[0008] A plurality of first flat tubes and a plurality of second flat tubes are arranged between the two main plates, two ends of the first flat tubes penetrating through the two main plates and respectively communicating with the water inlet cavity and the water outlet chamber, two ends of the second flat tubes penetrating through the two main plates and respectively communicating with the water outlet cavity and the water outlet chamber.

[0009] A plurality of fins connected with the first flat tubes and the second flat tubes are further arranged between the two main plates.

[0010] Further, a cylindrical structure is connected to the free end of the exhaust pipe, a one-way exhaust valve is arranged on the cylindrical structure away from the exhaust pipe, and a gas-liquid separation membrane is arranged in the cylindrical structure between the exhaust pipe and the one-way exhaust valve.

[0011] Further, the cylindrical structure is provided with radial ribs for fixing the cylindrical structure and the exhaust pipe interface, and the other end of the outer peripheral wall is coaxially fixed with a ring-shaped bulge.

[0012] Further, the exhaust pipe interface is arranged at the highest point of the water inlet chamber, and the interface axis coincides with the vertical line of the installation inclination angle of the warm air core.

[0013] Further, the first flat tube and the second flat tube are each provided with a turbulent protrusion for enhancing the turbulent effect of the cooling liquid.

[0014] Further, the turbulent protrusion is hemispherical, and it is arranged in a staggered manner inside the first flat tube and the second flat tube, and the height of the turbulent protrusion is one-fifth to one-third of the height of the flow channel inside the first flat tube and the second flat tube.

[0015] Further, buckles are fixed to both ends of the two main plates, the buckles have sockets, and the socket directions of the buckles on the two main plates are oppositely arranged, the outer sides of the outermost first flat tubes and second flat tubes are abutted with side plates, and the side plates are inserted and arranged in the opposite buckles.

[0016] In summary, the beneficial technical effects of the present application are:

[0017] After the engine is warmed up, the high-temperature coolant enters the water inlet cavity through the water inlet pipe, and the coolant flows through the first flat tube, the water outlet cavity, the second flat tube, and the water outlet cavity in turn, and finally returns to the engine through the water outlet pipe to circulate; in this process, the air blower continuously sends air, and the warm air enters the car compartment from the air outlet; and during the circulation of the coolant, the exhaust pipe automatically discharges residual air, so that the coolant flows in the whole path. Through the series structure of the first flat tube and the second flat tube, the design of the cavity water chamber, and the optimization of the exhaust pipe, efficient heat exchange and stable operation are realized. The coolant is cooled twice in a closed loop, and the fin increases the heat transfer area to ensure rapid output of warm air in a low temperature environment, and the exhaust pipe can effectively prevent air resistance and improve system reliability. Effectively improve the existing problem that the automobile warm air core assembly generally has no exhaust function, which affects the heating effect of the warm air core assembly. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0019] Figure 2 is a schematic diagram of the overall structure of the embodiment of the present application; Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application;

[0020] Figure 3 is a schematic diagram of the overall structure of the embodiment of the present application;

[0021] Figure 4 is a schematic diagram of the overall structure of the embodiment of the present application; Figure 3 is a schematic diagram of the overall structure of the embodiment of the present application.

[0022] Reference signs: 1, main piece; 11, buckle; 2, water chamber; 21, water inlet cavity; 22, water outlet cavity; 23, exhaust pipe; 231, radial rib; 232, cylindrical structure; 233, bulge; 234, one-way exhaust valve; 24, water inlet pipe; 25, water outlet pipe; 3, water outlet cavity; 4, first flat tube; 5, second flat tube; 51, turbulent protrusion; 6, fin; 7, edge plate. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] The embodiment of the present application discloses an automobile warm air core assembly with an exhaust pipe. Referring to Figures 1 to 4The automobile heating core assembly with exhaust pipe comprises two parallel main sheets 1, upper water chamber 2 and lower water chamber 3 are arranged on the sides of the two main sheets 1 away from each other, the upper water chamber 2 is divided into water inlet cavity 21 and water outlet cavity 22, the exhaust pipe 23, the water inlet pipe 24 communicating with the water inlet cavity 21 and the water outlet pipe 25 communicating with the water outlet cavity 22 are arranged on the upper water chamber 2; a plurality of first flat tubes 4 and a plurality of second flat tubes 5 are arranged between the two main sheets 1, the two ends of the first flat tube 4 penetrate through the two main sheets 1 and communicate with the water inlet cavity 21 and the lower water chamber 3 respectively, the two ends of the second flat tube 5 penetrate through the two main sheets 1 and communicate with the water outlet cavity 22 and the lower water chamber 3 respectively; a plurality of fins 6 connected with the first flat tube 4 and the second flat tube 5 are further arranged between the two main sheets 1.

[0025] In this way, after the engine is warmed up, the high-temperature coolant enters the water inlet cavity 21 through the water inlet pipe 24, and the coolant flows through the first flat tube 4, the lower water chamber 3, the second flat tube 5 and the water outlet cavity 22 in turn from the water inlet cavity 21, and finally returns to the engine through the water outlet pipe 25 to circulate; in this process, the air blower continuously sends air, and the warm air enters the vehicle cabin from the air outlet; and during the circulation of the coolant, the exhaust pipe 23 automatically discharges the residual air, so that the coolant flows through the whole path. Through the series connection structure of the first flat tube 4 and the second flat tube 5, the design of the divided cavity upper water chamber 2 and the optimization of the exhaust pipe 23, efficient heat exchange and stable operation are realized. The coolant is cooled twice in the closed loop, the heat transfer area is increased by the fins 6, and the warm air is quickly output in a low-temperature environment, which can effectively prevent air resistance and improve the reliability of the system. The problem that the existing automobile heating core assembly generally has no exhaust function and affects the heating effect of the heating core assembly is effectively improved.

[0026] Specifically, referring to Figure 1 and Figure 2 , the free end of the exhaust pipe 23 is connected with a cylindrical structure 232, the cylindrical structure 232 is provided with a one-way exhaust valve 234 away from the end of the exhaust pipe 23, the one-way exhaust valve 234 functions to ensure that the gas is discharged in one direction and prevent external foreign matters such as dust and moisture from flowing back into the exhaust pipe 23; a gas-liquid separation membrane (not shown in the figure) is arranged between the exhaust pipe 23 and the one-way exhaust valve 234 in the cylindrical structure 232, the gas-liquid separation membrane is made of hydrophobic porous material such as PTFE membrane or labyrinth type partition plate, which allows gas to pass but intercepts liquid. Through the integration of the exhaust pipe 23, the cylindrical structure 232, the gas-liquid separation membrane and the one-way valve, intelligent management of the exhaust of the cooling system is realized, which not only improves the heat exchange performance of the heating core, but also further enhances the sealing performance and reliability of the system.

[0027] and, referring to Figure 1 and Figure 2, the interface end of the cylindrical structure 232 and the exhaust pipe 23 is provided with a radial rib 231 for fixing the interface of the cylindrical structure 232 and the exhaust pipe 23, and the other end of the outer peripheral wall is coaxially fixed with a ring-shaped bulge 233.

[0028] The radial rib 231 is made of elastic material such as plastic or spring steel, and is tightly attached to the outer wall of the exhaust pipe 23 by radial compression deformation during installation, and forms an interference fit after release. The end of the rib can be designed with a barb or sawtooth structure to further improve its connection stability; the bulge 233 of the cylindrical structure 232 is a stainless steel stamped hemispherical structure, which is sealed and connected with the automobile exhaust hose through a clamp. Through the design of the radial rib 231 and the ring-shaped bulge 233, the quick installation, accurate positioning and long-term sealing of the cylindrical structure 232 in the warm air core assembly are realized. The radial rib 231 provides elastic fixation and vibration suppression, and the ring-shaped bulge 233 ensures axial positioning and structural reinforcement, which effectively solves the problems of loose interface and poor sealing of the exhaust pipe 23, not only improves the reliability of the warm air core, but also reduces the production cost through the characteristics of modularization and tool-free installation, which is suitable for large-scale automobile manufacturing needs.

[0029] Furthermore, referring to Figure 1 and Figure 2 , the exhaust pipe 23 interface is arranged at the highest point of the upper water chamber 2, and the interface axis coincides with the vertical line of the installation inclination angle of the warm air core. The gas such as air and steam in the cooling liquid will naturally float to the highest point of the system because its density is lower than that of the liquid. By arranging the exhaust pipe 23 interface at the top of the upper water chamber 2, the gas can be maximized to collect, and the negative impact of gas bubble retention on heat exchange efficiency can be reduced; the warm air core assembly often needs to be installed at an angle due to the layout restrictions of the engine compartment. If the axis of the exhaust pipe 23 coincides with the vertical line of the inclination direction, the actual direction of the exhaust pipe 23 is perpendicular to the direction of gravity, i.e. vertical or close to vertical. The vertically or nearly vertically arranged exhaust pipe 23 can utilize gravity to accelerate gas discharge, further improving its exhaust efficiency.

[0030] Further, referring to Figure 3 and Figure 4 , the first flat tube 4 and the second flat tube 5 are both provided with turbulence protrusions 51 for enhancing the turbulence effect of the cooling liquid. Because the inner wall of the traditional smooth flat tube is easy to form laminar flow, the layered flow of the fluid leads to the thickening of the thermal boundary layer and the increase of the thermal resistance. The turbulence protrusions 51 destroy the laminar flow through geometric disturbance, forcing the cooling liquid to generate longitudinal vortex and transverse mixing, and thinning the thermal boundary layer; and the protrusion structure induces flow separation and reattachment when the fluid flows through, increasing the turbulent kinetic energy and strengthening the convective heat transfer between the cooling liquid and the inner wall of the first flat tube 4 and the second flat tube 5.

[0031] At the same time, referring to Figure 3 and Figure 4The turbulent protrusions 51 are hemispherical and staggered in the first flat tube 4 and the second flat tube 5, and the height of the turbulent protrusions 51 is one fifth to one third of the height of the flow channel in the first flat tube 4 and the second flat tube 5, which can ensure effective disturbance to the main flow area while avoiding excessive obstruction of the flow channel in the first flat tube 4 and the second flat tube 5.

[0032] The hemispherical protrusions guide the fluid to generate symmetrical separation vortices through curved surface transition, and the streamlined profile forms stable Karman vortex streets when the fluid flows through, which can achieve equivalent turbulent kinetic energy enhancement at a lower pressure drop; and the protrusion surface has a larger contact area with the cooling liquid, which cooperates with the vortex flow to thin the thermal boundary layer and further improve the local convective heat transfer coefficient; the staggered arrangement of the turbulent protrusions 51 forms a spatial periodic disturbance, which promotes the generation of multi-scale vortices in the first flat tube 4 and the second flat tube 5, and further improves the heat exchange efficiency.

[0033] In addition, referring to Figure 1 and Figure 2 , the two ends of the two main plates 1 are fixedly connected with buckles 11, the buckles 11 have sockets, and the socket directions of the buckles 11 on the two main plates 1 are oppositely arranged, the outer sides of the outermost first flat tube 4 and the second flat tube 5 are abutted with side plates 7, and the side plates 7 are insertedly arranged in the opposite two buckles 11. The socket of the buckle 11 at the end of the two main plates 1 is designed to be mirror-symmetric, forming a self-alignment guide slot, which ensures that the side plate 7 is automatically corrected in position when inserted, reducing assembly errors; the buckle 11 body adopts a cantilever beam structure, reserving an elastic deformation amount of 0.5-1mm, and generating a pre-tightening force through material springback after being inserted into the side plate 7, which takes into account convenience and stability.

[0034] The implementation principle of the automobile heating core assembly with the exhaust pipe 23 in the embodiment of the application is as follows:

[0035] After the engine is warmed up, the high-temperature cooling liquid enters the water inlet cavity 21 through the water inlet pipe 24, and the cooling liquid flows through the first flat tube 4, the water chamber 3, the second flat tube 5, and the water outlet cavity 22 in sequence from the water inlet cavity 21, and finally returns to the engine circulation through the water outlet pipe 25; in this process, the air blower continuously sends air, and the warm air enters the vehicle cabin from the air outlet; and in the cooling liquid circulation process, the exhaust pipe 23 automatically discharges residual air, so that the cooling liquid flows in the whole path. Through the series structure of the first flat tube 4 and the second flat tube 5, the design of the divided cavity water chamber 2, and the optimization of the exhaust pipe 23, high-efficiency heat exchange and stable operation are realized. The cooling liquid is cooled twice in the closed loop, and the fin 6 increases the heat transfer area, which ensures that the warm air is quickly output in a low-temperature environment, and the residual air is effectively discharged through the exhaust pipe 23 to prevent air resistance and improve the system reliability. It effectively improves the problem that the existing automobile heating core assembly generally has no exhaust function, which affects the heating effect of the heating core assembly.

[0036] Unless otherwise defined, technical terms or scientific terms used in the present application shall have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Unless otherwise defined, the terms "first", "second" or "third" and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. The terms "one", "another", "an" or "some" as well as similar referents in the context of describing the specification and claims are to be construed to be open-ended, i.e., to cover both singular and plural referents unless otherwise indicated. The terms "including", "containing" or "comprising" and the like are not intended to exclude other integers or steps, but to "include" or "comprise" other integers or steps unless otherwise indicated. The terms "connected", "coupled" or "pathway" are not restricted to direct connections, couplings or pathways but include indirect connections, couplings or pathways unless otherwise indicated. The terms "above", "below", "left", "right" and the like are only used to express relative positions such that if an absolute position of a described object is changed, the relative positions can also be changed accordingly.

[0037] The above are only preferred embodiments of the present application, not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An automotive heater core assembly with an exhaust duct, characterized by, The utility model provides a kind of cooling device, including two parallelly arranged main sheets (1), the side of two described main sheets (1) away from each other is respectively provided with upper water chamber (2) and lower water chamber (3), water inlet cavity (21) and water outlet cavity (22) are separately provided in the upper water chamber (2), exhaust pipe (23) is provided on the upper water chamber (2), water inlet pipe (24) is communicated with the water inlet cavity (21) and water outlet pipe (25) is communicated with the water outlet cavity (22); Multiple first flat tubes (4) and multiple second flat tubes (5) are arranged between two described main sheets (1), the first flat tube (4) both ends penetrate two described main sheets (1) and is respectively communicated with the water inlet cavity (21) and the lower water chamber (3), the second flat tube (5) both ends penetrate two described main sheets (1) and is respectively communicated with the water outlet cavity (22) and the lower water chamber (3); Multiple fins (6) connected with the first flat tube (4) and the second flat tube (5) are further arranged between two described main sheets (1).

2. An automotive heater core assembly with an exhaust tube as set forth in claim 1 wherein, The free end of the exhaust pipe (23) is connected with a cylindrical structure (232), the cylindrical structure (232) is provided with a one-way exhaust valve (234) away from the exhaust pipe (23) end, a gas-liquid separation membrane is arranged between the exhaust pipe (23) and the one-way exhaust valve (234) in the cylindrical structure (232).

3. An automotive heater core assembly with an exhaust tube as set forth in claim 2 wherein, The cylindrical structure (232) is provided with a radial rib (231) for fixing the interface of the cylindrical structure (232) and the exhaust pipe (23) at the interface connection end of the cylindrical structure (232) and the exhaust pipe (23), and the other end of the outer peripheral wall is coaxially fixed with a ring-shaped bulge (233).

4. The automotive heater core assembly with an exhaust tube of claim 1, wherein, The interface of the exhaust pipe (23) is arranged at the highest point of the upper water chamber (2), and the interface axis coincides with the vertical line of the installation inclination angle of the warm air core body.

5. The automotive heater core assembly with an exhaust tube of claim 1, wherein, The first flat tube (4) and the second flat tube (5) are both provided with a turbulence protrusion (51) for enhancing the turbulence effect of cooling liquid.

6. An automotive heater core assembly with an exhaust tube as defined in claim 5 wherein, The turbulence protrusion (51) is hemispherical, and it is staggered arranged inside the first flat tube (4) and the second flat tube (5), and the height of the turbulence protrusion (51) is one fifth to one third of the height of the flow passage inside the first flat tube (4) and the second flat tube (5).

7. The automotive heater core assembly with an exhaust tube of claim 1, wherein, The two ends of the two main sheets (1) are fixedly connected with buckles (11), the buckles (11) have sockets, and the socket directions of the buckles (11) on the two main sheets (1) are oppositely arranged, the outer sides of the outermost first flat tubes (4) and second flat tubes (5) are abutted with side plates (7), and the side plates (7) are insertedly arranged in the opposite buckles (11).

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