CN211977310U - Shell subassembly under vehicle air conditioner evaporimeter - Google Patents

Abstract

The utility model discloses a casing assembly under vehicle air conditioner evaporimeter relates to vehicle air conditioner technical field. The evaporator lower shell is provided with a containing cavity with an upward opening, and the outer side of the side wall of the evaporator lower shell is provided with a water outlet; a water collecting tank communicated with the water outlet is arranged at the bottom of the accommodating cavity; the water receiving tray is of a long straight groove-shaped structure with two open ends, and the bottom of the water receiving tray is provided with a plurality of drainage holes; the upper ends of the two side groove walls of the water receiving tray are outwards turned to form a first turned edge and a second turned edge respectively, and a plurality of bulges distributed at intervals along the length direction of the first turned edge are arranged on the lower side of the first turned edge; the both sides of water catch bowl are provided with respectively and are used for supporting first turn-ups's preceding collateral branch brace and are used for supporting the turn-ups of second back collateral branch brace, and preceding collateral branch brace is provided with on the bench with protruding complex recess one by one, hold and be provided with on the inner wall in chamber with back collateral branch brace complex dog from top to bottom. The utility model overcomes the poor problem of vehicle air conditioner outlet side play drainage effect has optimized whole car design space.

Description

Shell subassembly under vehicle air conditioner evaporimeter

Technical Field

The utility model relates to an automobile air conditioner technical field specifically is a casing subassembly under vehicle air conditioner evaporimeter.

Background

The automobile air conditioner is mainly used for adjusting and controlling the temperature, the humidity, the air cleanliness and the air flow in an automobile compartment in the optimal state, providing a comfortable riding environment for passengers and reducing the travel fatigue; the ventilation device creates good working conditions for drivers and plays an important role in ensuring safe driving. With the development of the automobile industry, the air conditioning systems, namely trucks, are commonly installed on automobiles, not only cars, minibuses and buses, but also on a plurality of automobile models. Therefore, the air conditioner for vehicles and its accessories have now become one of the essential accessories for automobile manufacture.

The automobile air conditioner assembled in a truck mainly comprises a blower, a warm air core body, an evaporator core body, a corresponding outer shell body and the like. Wherein the evaporator core is typically mounted in an evaporator lower shell. During the operation of the air conditioner, a large amount of condensed water generated on the surface of the evaporator core flows into the lower evaporator shell at the lower end of the evaporator core. In order to avoid water accumulation at the lower end of the evaporator core, a common mode is to directly design a water outlet at the bottom of the lower evaporator shell at the lower end of the evaporator core and discharge corresponding condensed water in time, however, the design causes the automobile air conditioner to occupy more whole automobile space, the layout of parts of the whole automobile is limited, and further the design space around the whole automobile is reduced.

For example, chinese patent, issued publication No.: CN 203837224U, authorized announcement date: 2014.09.17, discloses a drainage structure at the bottom of the evaporator core body of an automobile air-conditioning box, which comprises an air-conditioning box shell, the bottom of the evaporator core body, a cavity and drainage holes, wherein the bottom of the evaporator core body is properly raised, so that the gap between the two sides of the bottom of the evaporator core body and the air-conditioning box shell is enlarged, and a water baffle is arranged in the enlarged cavity; the water baffle is of a ladder structure with a narrow upper part and a wide lower part and comprises a top layer, a fixed edge, a water guide edge and a gap, the water baffle is fixedly connected with the shell of the air-conditioning box through the lower end of the fixed edge, the bottom of the evaporator core body is arranged on the top layer of the water baffle, and a plurality of gaps are arranged on the water guide edge.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved by the utility model

The outlet setting on the evaporimeter casing leads to the limited problem in whole car design space in evaporimeter core body bottom in current car air conditioner, the utility model provides a casing subassembly under the car air conditioner evaporimeter through the institutional advancement to casing under the evaporimeter, adds the water collector and cooperates with it simultaneously, when having realized that the car air conditioner outlet inclines out, has guaranteed that the drainage is unobstructed, has optimized whole car design space.

Technical scheme

In order to solve the above problem, the utility model provides a technical scheme does:

a lower shell assembly of an automobile air conditioner evaporator comprises a lower shell of the evaporator, wherein the lower shell of the evaporator is provided with a containing cavity with an upward opening, and a water outlet is formed in the outer side of the side wall of the lower shell of the evaporator; a water collecting tank communicated with the water outlet is arranged at the bottom of the accommodating cavity; the water receiving tray is of a long straight groove-shaped structure with two open ends, and the bottom of the water receiving tray is provided with a plurality of drainage holes; the water receiving tray is arranged on the water collecting tank and used for enabling the lower end of the evaporator installed in the water collecting tank to be far away from the bottom of the water collecting tank.

Further, wherein: the upper ends of the two side groove walls of the water receiving tray are outwards turned to form a first turned edge and a second turned edge respectively, and a plurality of bulges distributed at intervals along the length direction of the first turned edge are arranged on the lower side of the first turned edge; the both sides of water catch bowl are provided with respectively and are used for supporting first turn-ups front side supporting bench and be used for supporting the turn-ups rear side supporting bench of second, be provided with on the front side supporting bench with protruding complex recess one by one, hold be provided with on the inner wall in chamber with rear side supporting bench complex dog from top to bottom. The installation during the water collector, earlier with second turn-ups card is gone into back collateral branch brace table with between the dog, then will protruding card is gone into in the corresponding recess, and the water collector can only break away from with the casing under the evaporimeter through upwards overturning, but because the evaporimeter card goes into behind the water collector to the water collector upwards overturn formation of water collector and stops, at this moment, only need fix the evaporimeter upper end, can realize the relative fixation between the casing under water collector and the evaporimeter.

Furthermore, a plurality of front side drainage grooves leading to the bottom of the water collecting groove are formed in the front side supporting platform; a plurality of convex edges are arranged on the outer side of the groove wall of the water receiving tray, which is positioned on the same side of the first flanging, and the convex edges vertically extend from the opening part to the bottom of the water receiving tray; every two ribs are arranged adjacently and respectively correspond to two sides of the corresponding front side drainage groove. After setting up like this, receive the support of bead can leave the space between water collector outer wall and water catch bowl lateral wall, in order to increase the drainage speed of front side drainage groove has guaranteed that the comdenstion water of casing front side drains into the water catch bowl under the evaporimeter fast.

Furthermore, the rear side supporting platforms are distributed at intervals, and a rear side drainage groove is formed between every two adjacent rear side supporting platforms; and a plurality of drainage notches are formed in the second flanging, and the drainage notches correspond to the rear side drainage grooves one to one. Thus, the condensate water on the rear side of the lower shell of the evaporator can flow through the drainage notch to flow through the rear-side drainage groove to enter the water collection groove, the unit flow of the condensate water on the lee side of the evaporator to the water collection groove is increased, and the condensate water on the rear side of the lower shell of the evaporator is guaranteed to be rapidly discharged into the water collection groove.

And furthermore, the drainage retaining ribs used for guiding the flow direction of the condensed water are arranged on the side wall of the containing cavity in the rear side drainage groove, so that the condensed water in the rear side drainage groove can be uniformly distributed.

Furthermore, a reinforcing rib is arranged between the lower side of the second flanging and the outer side of the wall of the water receiving tray groove, and the reinforcing rib and the drainage notches are distributed in a staggered mode, so that the strength of the second flanging is enough and the second flanging is not easy to deform under the condition that the drainage notches exist.

Furthermore, the drainage holes are uniformly distributed along the length direction of the water pan and are divided into a plurality of rows along the width direction of the water pan. The drainage hole that distributes like this can cover the whole lower extreme of evaporimeter to in time discharge from each position of evaporimeter the comdenstion water that flows into in the water collector, optimize drainage effect.

Furthermore, the bottom of the water pan is also provided with a supporting edge extending along the length direction of the water pan, and the supporting edge is used for supporting the lower end of the evaporator, so that a water outlet channel is reserved between the lower end of the evaporator and the bottom in the water pan.

Further, the number of the supporting edges is at least two, and the supporting edges are arranged in parallel to each other so as to provide stable support for the evaporator.

Furthermore, the number of the water outlets is two, the water outlets are arranged on the front side of the lower shell of the evaporator, and the left end and the right end of the water collecting tank are communicated with the corresponding water outlets through side runners on two sides.

Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model provides a lower shell component of an automobile air-conditioning evaporator, a water outlet is arranged on the side surface of a lower shell of the evaporator, and a water collecting groove is arranged in a containing cavity to be communicated with the water collecting groove, so that condensed water flows into the containing cavity along the evaporator and then is discharged from the water outlet along the water collecting groove; the drain pipe connected with the water outlet is directly led out from the side surface of the lower shell of the evaporator, and the drain pipe does not need to be arranged on the lower side of the lower shell of the evaporator, so that the peripheral design space of the whole vehicle is optimized; meanwhile, the water receiving disc is adopted to lift the evaporator to enable the lower end of the evaporator to be far away from the bottom of the water collecting tank, so that the problem that the lower end of the evaporator obstructs the flow of condensed water to the water outlet along the water collecting tank is avoided, smooth water drainage is guaranteed, and the technical problem of poor water discharging effect of the side of the water outlet is solved;

(2) the utility model provides a lower shell assembly of an automobile air-conditioning evaporator, a water receiving disc and a lower shell of the evaporator are matched by mutually clamped structures, the reliability of the mode is equivalent to that of screw fixation, the assembly efficiency is higher compared with the mode of screw connection and the like, and the lower shell of the evaporator and the water receiving disc can not be damaged during disassembly;

(3) the utility model provides a lower shell component of an automobile air-conditioning evaporator, which is characterized in that the structure of the water receiving disc and the lower shell of the evaporator is improved, so that condensed water generated on the windward side and the leeward side of the evaporator and on the inner wall of the shell of the evaporator can be quickly discharged into a water collecting tank after falling onto the lower shell of the evaporator, and thus, even when an air conditioner is operated under a severe working condition, a large amount of condensed water generated by the evaporator can be discharged in time, so that the phenomenon of water blowing at an air outlet of the air conditioner cannot be caused;

(4) the utility model provides a lower shell component of an automobile air-conditioning evaporator, which is characterized in that drainage blocking ribs are arranged in the rear side drainage grooves, so that condensed water in each rear side drainage groove can be uniformly distributed, and the condition of water accumulation on one side is avoided;

(5) the utility model provides a lower shell component of an automobile air-conditioning evaporator, which effectively realizes that condensed water entering a water pan quickly shunts and drains into a water collecting tank by arranging drainage holes and supporting edges in the water pan, and has good drainage performance;

(6) the utility model provides a pair of shell assembly under vehicle air conditioner evaporimeter sets up two outlets, and the displacement enlarges one time, and can paste the lateral wall and arrange and draw the car outside about vehicle air conditioner behind the vehicle air conditioner water piping connection outlet, can not influence the spare part overall arrangement of whole car, very big optimization the design space of whole car.

Drawings

FIG. 1 is a schematic structural view of a lower shell assembly of an evaporator;

FIG. 2 is a schematic structural view of a lower shell of the evaporator;

FIG. 3 is a schematic view of the structure of the lower shell of the evaporator

FIG. 4 is a schematic structural view of the water pan;

FIG. 5 is a schematic view of the bottom structure of the water pan;

FIG. 6 is a side view of the drip tray;

FIG. 7 is a schematic view of the evaporator and the drip pan;

in the drawings: 1. a water pan; 11. a first flanging; 12. second flanging; 13. a drainage hole; 14. a support edge; 15. a drainage notch; 16. a protrusion; 17. a rib; 18. reinforcing ribs;

2. an evaporator lower shell; 20. an accommodating chamber; 21. a water collection tank; 211. a side runner; 22. a water outlet; 23. a front side support table; 24. a rear side support table; 25. a groove; 26. a stopper; 27. a front side drainage groove; 28. a rear side drainage groove; 29. drainage and rib blocking;

100. an evaporator.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

Example 1

As shown in fig. 1, the lower shell assembly of the automobile air conditioner evaporator in the embodiment includes an evaporator lower shell 2 and a water pan 1; the lower evaporator shell 2 is provided with an accommodating cavity 20 with an upward opening, and the outer side of the side wall of the lower evaporator shell is provided with a water outlet 22; a water collecting groove 21 communicated with the water outlet 22 is arranged at the bottom of the accommodating cavity 20; the water pan 1 is of a long straight groove-shaped structure with two open ends, and the bottom of the water pan is provided with a plurality of drainage holes 13; the water pan 1 is disposed on the water collecting tank 21, and is used for keeping the lower end of the evaporator 100 installed therein away from the bottom of the water collecting tank 21. In actual assembly, as shown in fig. 1, the water pan 1 is first installed on the water collecting tank 21 in the evaporator lower housing 2, then the lower end of the evaporator 100 is clamped into the water pan 1 as shown in fig. 7, and the upper end of the evaporator 100 is fixed, and the evaporator 100 is in a state of being inclined to the front side after installation.

In a conventional air conditioner for a vehicle, in order to prevent water from being accumulated at a lower end of an evaporator, a water discharge port is generally directly formed at a bottom of a lower case of the evaporator at the lower end of the evaporator, and corresponding condensed water is discharged. On the whole car of car, in order to look after whole car space and spare part overall arrangement, the drain pipe export is generally not under the casing under the evaporimeter, and this just leads to the drain pipe to need to wind the drain pipe export on the whole car of car from evaporimeter casing bottom under the evaporimeter, consequently need reserve out the drain pipe space of arranging in the casing below under the evaporimeter when whole car design. The designed automobile air conditioner occupies more whole automobile space, so that the layout of parts of the whole automobile is limited, and the design space around the whole automobile is reduced.

In the lower shell assembly of the automobile air-conditioning evaporator in the embodiment, the water outlet 22 is arranged on the side surface of the lower shell 2 of the evaporator, and the water collecting tank 21 is arranged in the accommodating cavity 20 and communicated with the accommodating cavity 20, so that condensed water flows into the accommodating cavity 20 along the evaporator 100 and then is discharged from the water outlet 22 along the water collecting tank 21; the drain pipe connected with the drain port 22 is directly led out from the side surface of the lower evaporator shell 2, and the drain pipe does not need to be arranged at the lower side of the lower evaporator shell 2, so that the peripheral design space of the whole vehicle is optimized; meanwhile, the water receiving plate 1 is adopted to lift the evaporator 100 to enable the lower end of the evaporator 100 to be far away from the bottom of the water collecting tank 21, so that the problem that the lower end of the evaporator 100 obstructs condensate water to flow to the water outlet 22 along the water collecting tank 21 is avoided, smooth drainage is guaranteed, and the technical problem of poor side-outlet drainage effect of the water outlet is solved.

Specifically, as shown in fig. 1, 2 and 3, the two drain openings 22 in the present embodiment are disposed at the front side of the evaporator lower case 2, and the left and right ends of the water collecting tank 21 are respectively communicated with the corresponding drain openings 22 through the side flow passages 211 at both sides. The traditional bottom drainage type automobile air conditioner is limited by the space of the whole automobile, and generally only one water outlet can be arranged, although the water outlet is arranged below the evaporator, the condensed water falling from the evaporator can be directly discharged outside, and the unit discharge capacity is limited. Two water outlets 22 are arranged in the embodiment, the water discharge amount is doubled, and the water discharge pipe of the automobile air conditioner can be arranged along the left side wall and the right side wall of the automobile air conditioner and led out of the automobile after being connected with the water discharge ports 22, so that the layout of parts of the whole automobile is not influenced, and the design space of the whole automobile is greatly optimized.

Example 2

In the basic structure of the lower shell assembly of the automobile air conditioner evaporator in the embodiment, the basic structure is the same as that in embodiment 1, and the difference and improvement lies in that the structures of the water pan 1 and the lower shell 2 of the evaporator are improved so as to facilitate the installation and fixation of the water pan 1 and improve the assembly efficiency.

Specifically, as shown in fig. 4 and 6, the upper ends of the two side groove walls of the water pan 1 are turned outwards to form a first turned edge 11 and a second turned edge 12, respectively, and a plurality of protrusions 16 are arranged on the lower side of the first turned edge 11 at intervals along the length direction of the first turned edge 11; meanwhile, as shown in fig. 2, a front support table 23 for supporting the first turned-over edge 11 and a rear support table 24 for supporting the second turned-over edge 12 are respectively disposed on both sides of the water collection tank 21, grooves 25 matched with the protrusions 16 one by one are disposed on the front support table 23, and stoppers 26 matched with the rear support table 24 up and down are disposed on the inner wall of the accommodating cavity 20.

The conventional automobile air conditioner parts are generally fixed by adopting bolt connection, and the main reason is that the whole vibration is large in the driving process of an automobile, and collision and damage between the parts can easily occur if the parts are not fixed firmly.

And in this embodiment, adopt the mode assembly water collector 1 of mutual joint and casing 2 under the evaporimeter, the installation during water collector 1, earlier with second turn-ups 12 card is gone into back side brace table 23 with between the dog 26, then will protruding 16 card is gone into in the corresponding recess 25, and water collector 1 can only break away from through upwards upset and casing 2 under the evaporimeter, but because evaporimeter 100 card goes into behind the water collector 1 and upwards overturns the formation to water collector 1 and block to water collector 1, at this moment, only need fix the upper end of evaporimeter 100, can realize the relatively fixed between casing 2 under water collector 1 and the evaporimeter, and through verifying, this kind of mode is equivalent with the reliability of fix with screw, and compares that mode assembly efficiency such as screw connection is higher, can not cause the damage to casing 2 under the evaporimeter and water collector 1 itself when dismantling simultaneously.

Example 3

The basic structure of the lower shell assembly of the automobile air conditioner evaporator in the embodiment is the same as that of embodiment 1 or 2, and the difference and improvement lies in that the structures of the water pan 1 and the lower shell 2 of the evaporator are further improved.

Specifically, as shown in fig. 2 and 3, the front support stand 23 is provided with a plurality of front drainage grooves 27 leading to the bottom of the water collection tank 21; meanwhile, as shown in fig. 5, a plurality of ribs 17 are arranged on the outer side of the wall of the water pan 1 on the same side as the first flanging 11, and the ribs 17 vertically extend from the opening of the water pan 1 to the bottom; every two ribs 17 are adjacently arranged and respectively correspond to two sides of the corresponding front side drainage groove 27. After the arrangement, the gap can be reserved between the outer wall of the water receiving tray 1 and the side wall of the water collecting tank 21 by the support of the convex ribs 17, so that the drainage speed of the front side drainage groove 27 is increased, and the condensate water on the front side of the lower shell 2 of the evaporator is ensured to be quickly drained into the water collecting tank 21.

Meanwhile, as shown in fig. 2, the rear support platforms 24 are distributed at intervals, and a rear drainage groove 28 is formed between two adjacent rear support platforms 24; meanwhile, as shown in fig. 4, a plurality of drainage notches 15 are formed in the second turned-over edge 12, and the drainage notches 15 correspond to the rear-side drainage grooves 28 one to one. Thus, the condensed water on the rear side of the evaporator lower shell 2 can flow through the rear side drainage groove 28 through the drainage notch 15 to enter the water collection groove 21, the unit flow of the condensed water on the leeward side of the evaporator 100 flowing to the water collection groove 21 is increased, and the condensed water on the rear side of the evaporator lower shell 2 is ensured to be quickly drained into the water collection groove 21. In this embodiment, as shown in fig. 5, a reinforcing rib 18 is disposed between a lower side of the second flange 12 and an outer side of a groove wall of the water pan 1, and the reinforcing rib 18 and the drainage notch 15 are distributed in a staggered manner, so that the second flange 12 has sufficient strength and is not easy to deform when the drainage notch 15 exists.

Casing assembly under the vehicle air conditioner evaporimeter in this embodiment, it is right through the water collector 1 with casing 2's under the evaporimeter structure carries out above-mentioned improvement, has guaranteed that the comdenstion water that produces on evaporimeter 100 windward side and leeward side and the evaporimeter shells inner wall falls can discharge into water catch bowl 21 fast under the evaporimeter behind the casing 2, so, even when running air conditioner under abominable operating mode, a large amount of comdenstion water that evaporimeter 100 produced also can in time be discharged to the phenomenon that can not cause air conditioner air outlet to blow water takes place.

In addition, as shown in fig. 2, drainage ribs 29 for guiding the flow direction of the condensed water are arranged on the side walls of the accommodating cavity 20 in the rear drainage groove 28. In this embodiment, four drainage baffle ribs 29 are provided and are arranged symmetrically left and right; the two drainage blocking ribs 29 positioned on the two sides have the same structure, and are both bent from the middle part and obliquely extended from the two sides to the oblique lower parts of the two sides, so that the condensate water in the corresponding rear drainage groove 28 is divided to the two sides of the drainage blocking rib 29; the two drainage blocking ribs 29 positioned in the middle are linear structures with the upper ends attached to the side walls of the rear side supporting tables 24 and the lower ends inclined downwards and oppositely, so that condensed water in the corresponding rear side drainage grooves 28 is drained to the middle of the lower evaporator shell 2; the design can make the comdenstion water reposition of redundant personnel in each rear side drainage groove 28 even, avoids appearing the condition of unilateral ponding and appears.

Example 4

The basic structure of the lower shell component of the automobile air conditioner evaporator in the embodiment is the same as that of any one of embodiments 1 to 3, and the difference and improvement lies in that the structure of the water pan 1 is further optimized.

Specifically, as shown in fig. 4, the drainage holes 13 are uniformly distributed along the length direction of the water collector 1, and are divided into a plurality of rows along the width direction of the water collector 1. The drainage holes 13 distributed in this way can cover the entire lower end of the evaporator 100, so that condensed water flowing into the water pan 1 from each part of the evaporator 100 can be discharged in time, and the drainage effect is optimized.

In addition, as shown in fig. 4, the bottom of the water-receiving tray 1 is further provided with a supporting edge 14 extending along the length direction thereof for supporting the lower end of the evaporator 100, so that a water flow channel is reserved between the lower end of the evaporator 100 and the bottom in the water-receiving tray 1. When a certain position of water accumulation in the water pan 1 is too much and can not be discharged from the corresponding drainage hole 13, the part of water accumulation can flow to the two ends of the adjacent drainage hole 13 and the water pan 1 in time, so that the local water accumulation is avoided, and the drainage efficiency is further improved. The support ribs 14 are at least two and are arranged in parallel to each other to provide stable support for the evaporator 100.

In this embodiment, as shown in fig. 4, the drainage holes 13 are arranged in two rows and located on two sides of the bottom of the water pan 1, and meanwhile, the drainage holes 13 on two sides are arranged in a staggered manner in the length direction of the water pan 1; the number of the supporting edges 14 is two, and the two supporting edges 14 are located between the two rows of the drainage holes 13. The condensed water on the two sides of the two supporting edges 14 in the water pan 1 is discharged from the corresponding drainage holes 13 and the two ends of the water pan 1, the condensed water between the supporting edges 14 in the water pan 1 is discharged from the two ends of the water pan 1, and the drainage performance is better.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a shell subassembly under vehicle air conditioner evaporimeter which characterized in that: comprises that

The evaporator comprises an evaporator lower shell (2), wherein the evaporator lower shell (2) is provided with an accommodating cavity (20) with an upward opening, and a water outlet (22) is formed in the outer side of the side wall of the evaporator lower shell; a water collecting groove (21) communicated with the water outlet (22) is formed at the bottom of the accommodating cavity (20); and

the water receiving tray (1) is of a long straight groove-shaped structure with two open ends, and the bottom of the water receiving tray is provided with a plurality of drainage holes (13);

the water receiving tray (1) is arranged on the water collecting tank (21) and used for enabling the lower end of the evaporator (100) installed in the water receiving tray to be far away from the bottom of the water collecting tank (21).

2. A lower housing assembly of an evaporator for an air conditioner of an automobile according to claim 1, wherein: wherein the content of the first and second substances,

the upper ends of the two side groove walls of the water receiving tray (1) are outwards turned over to form a first turned edge (11) and a second turned edge (12), and a plurality of bulges (16) distributed at intervals along the length direction of the first turned edge (11) are arranged on the lower side of the first turned edge (11);

the both sides of water catch bowl (21) are provided with respectively and are used for supporting front side supporting platform (23) and the back side supporting platform (24) of second turn-ups (12) of first turn-ups (11), be provided with on front side supporting platform (23) with protruding (16) complex recess (25) one by one, hold be provided with on the inner wall in chamber (20) with complex dog (26) about back side supporting platform (24).

3. A lower housing assembly of an evaporator for an air conditioner of an automobile according to claim 2, wherein: a plurality of front side drainage grooves (27) leading to the bottom of the water collecting groove (21) are formed in the front side supporting platform (23); a plurality of convex ribs (17) are arranged on the outer side of the groove wall of the water pan (1) positioned on the same side of the first flanging (11), and the convex ribs (17) vertically extend from the opening part to the bottom of the water pan (1); every two convex ribs (17) are arranged adjacently and respectively correspond to two sides of the corresponding front side drainage groove (27).

4. A lower housing assembly of an evaporator for an air conditioner of an automobile according to claim 2, wherein: the rear side supporting platforms (24) are distributed at intervals, and a rear side drainage groove (28) is formed between every two adjacent rear side supporting platforms (24); a plurality of drainage notches (15) are formed in the second flanging (12), and the drainage notches (15) correspond to the rear side drainage grooves (28) one to one.

5. An automotive air conditioning evaporator lower housing assembly according to claim 4, wherein: and drainage baffle ribs (29) used for guiding the flow direction of condensed water are arranged on the side wall of the accommodating cavity (20) in the rear side drainage groove (28).

6. An automotive air conditioning evaporator lower housing assembly according to claim 4, wherein: and reinforcing ribs (18) are arranged between the lower side of the second flanging (12) and the outer side of the wall of the water receiving tray (1), and the reinforcing ribs (18) and the drainage notches (15) are distributed in a staggered manner.

7. The lower housing assembly of an evaporator of an air conditioner for an automobile of any one of claims 1 to 6, wherein: the drainage holes (13) are uniformly distributed along the length direction of the water pan (1) and are divided into a plurality of rows along the width direction of the water pan (1).

8. An automotive air conditioning evaporator lower housing assembly according to claim 7, wherein: the bottom of the water pan (1) is also provided with a supporting edge (14) extending along the length direction of the water pan.

9. An automotive air conditioning evaporator lower housing assembly according to claim 8, wherein: the number of the supporting edges (14) is at least two, and the supporting edges are arranged in parallel.

10. The lower housing assembly of an evaporator of an air conditioner for an automobile of any one of claims 1 to 6, wherein: the two water outlets (22) are arranged on the front side of the lower evaporator shell (2), and the left end and the right end of the water collecting tank (21) are communicated with the corresponding water outlets (22) through side flow channels (211) on two sides.

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