Drainage device for evaporator of automobile air conditioner

Abstract

The utility model relates to the technical field of automobile air conditioners, in particular to an automobile air conditioner evaporator drainage device which comprises a drainage pipe, a rotary connector, a drainage port and a filter screen assembly, the filter screen assembly comprises a filter screen, two installation protrusions, two insertion columns and two elastic insertion rods, the filter screen is placed at a port of the drainage port, the insertion columns are inserted into insertion holes, and the installation protrusions are inserted into the insertion holes. In the inserting process of the inserting column, the second inclined face exerts force on the first inclined face, so that the elastic inserting rod slides on the side face of the mounting protrusion, when the end of the inserting column is inserted into the bottom of the inserting hole, the end of the elastic inserting rod is inserted into the fixing hole under the action of restoring force, and therefore mounting of the filter screen is completed. The filtering effect on dust in external air is improved, and the external dust is further prevented from entering the drainage device from the bottom of the drainage opening.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning technology, and in particular to an automotive air conditioning evaporator drainage device. Background Technology

[0002] The existing automotive air conditioning evaporator condensate drainage structure has a large gap in the drain outlet, allowing dust and mud from outside the vehicle to easily enter the drainage pipe through the drain outlet, clogging the drainage device and preventing condensate from draining properly, which then seeps out from inside the vehicle.

[0003] To address the above issues, patent document CN212673559U discloses a condensate drainage structure for automotive air conditioning evaporators. This technical solution features a screw-in interface that allows for easy disassembly of the drain outlet by twisting the interface. It is simple to operate and has a flat drain outlet with small gaps, effectively preventing dust and dirt from entering the drainage device from the bottom of the drain outlet and causing blockages, thus preventing condensate from being discharged normally outside the vehicle.

[0004] However, the existing automotive air conditioning evaporator drainage devices do not have a filter screen at the drain outlet. They only use a flat structure to prevent external dust from entering the drainage device from the bottom of the drain outlet, which is not ideal for filtering external dust. Utility Model Content

[0005] The purpose of this utility model is to provide a drainage device for automotive air conditioning evaporators, which solves the problem that existing automotive air conditioning evaporator drainage devices do not have a filter screen at the drain outlet and only use a flat structure to prevent external dust from entering the interior of the drainage device from the bottom of the drain outlet, resulting in an unsatisfactory filtration effect for external dust.

[0006] To achieve the above objectives, this utility model provides a drain device for an automotive air conditioning evaporator, including a drain pipe, a screw connector, a drain outlet, and a filter assembly. One end of the drain pipe is connected to the water collection chamber of the evaporator chip, and the other end of the drain pipe is provided with the screw connector. The drain outlet is provided at the end of the screw connector away from the drain pipe, and the end of the drain outlet away from the screw connector has a flat structure.

[0007] The filter assembly includes a filter screen, two mounting protrusions, two posts, and two elastic rods. The mounting protrusions are located on both sides of the drain outlet away from the screw connector. The posts are located on both sides of the filter screen. Each mounting protrusion has a insertion hole, and the post is adapted to the insertion hole. Each mounting protrusion has an elastic rod on its side, with the insertion end of the elastic rod slidably connected to the side wall of the mounting protrusion. Each post has a fixing hole on its side, and the insertion end of the elastic rod is adapted to the fixing hole. Each elastic rod has a first inclined surface at its insertion end, and each post has a second inclined surface at its bottom, the second inclined surface corresponding to the first inclined surface.

[0008] Each of the elastic inserts includes a fixed rod, a mounting block, and a spring. The fixed rod is slidably connected to the side of the mounting protrusion. The mounting block is provided at one end of the fixed rod located outside the mounting protrusion. The spring is provided between the mounting block and the outer side wall of the mounting protrusion. The spring is located outside the fixed rod.

[0009] Each of the elastic inserts further includes a pull ring, and each mounting block has the pull ring on the side away from the corresponding fixed rod.

[0010] The filter screen includes a screen body and a mounting frame. The screen body is disposed inside the mounting frame. Mounting blocks are disposed on both sides of the mounting frame, and the insertion posts are disposed on the mounting blocks.

[0011] Each of the filter screens includes an embedded ring, and the embedded ring is provided on the side of the mounting frame facing the drain outlet, and the embedded ring is fitted to the inner sidewall of the drain outlet.

[0012] This utility model discloses a drainage device for an automotive air conditioning evaporator. The filter screen is placed at the drain outlet, allowing the insert to be inserted into the socket. During insertion, the second inclined surface applies force to the first inclined surface, causing the elastic rod to slide on the side of the mounting protrusion. When the end of the insert reaches the bottom of the socket, the end of the elastic rod, under the action of restoring force, is inserted into the fixing hole, thus completing the installation of the filter screen. By installing the filter screen at the end of the drain outlet, the filtration effect on dust in the outside air is improved, further preventing external dust from entering the drainage device from the bottom of the drain outlet. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the structure of the automotive air conditioning evaporator drainage device provided by this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the drain outlet provided by this utility model.

[0016] Figure 3 This utility model provides Figure 2 Enlarged view of the local structure at point A.

[0017] Figure 4 This is a schematic diagram of the disassembled structure of the elastic insert and the mounting protrusion provided by this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the filter screen provided by this utility model.

[0019] 101-Drain pipe, 102-Swivel joint, 103-Drain outlet, 104-Mounting protrusion, 105-Insertion post, 106-Fixing rod, 107-Mounting block, 108-Spring component, 109-Pull ring, 110-Network body, 111-Mounting frame, 112-Embedded ring, 113-Insertion hole, 114-Fixing hole, 115-First inclined surface, 116-Second inclined surface. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] Please see Figures 1 to 5 ,in Figure 1 This is a structural diagram of the automotive air conditioning evaporator drainage device. Figure 2 This is a structural diagram of the drain outlet. Figure 3 yes Figure 2 Enlarged view of the local structure at point A. Figure 4 This is a schematic diagram showing the disassembled structure of the flexible insert and the mounting protrusion. Figure 5 This is a schematic diagram of the filter screen.

[0022] This utility model provides a drainage device for an automotive air conditioning evaporator, comprising a drain pipe 101, a screw connector 102, a drain outlet 103, and a filter assembly. The filter assembly includes a filter screen, two mounting protrusions 104, two inserts 105, and two elastic inserts. Each elastic insert includes a fixing rod 106, a mounting block 107, a spring 108, and a pull ring 109. The filter screen includes a mesh body 110, a mounting frame 111, and an embedded ring 112. This solution addresses the problem in existing automotive air conditioning evaporator drainage devices where the drain outlet 103 lacks a filter screen and relies solely on a flat structure to prevent external dust from entering the drainage device from the bottom of the drain outlet 103, resulting in insufficient filtration of external dust. Therefore, this solution can be applied to the structure of automotive air conditioning evaporator drainage devices.

[0023] In this specific embodiment, one end of the drain pipe 101 is connected to the water collection chamber of the evaporator chip, and the other end of the drain pipe 101 is provided with the screw connector 102. The end of the screw connector 102 away from the drain pipe 101 is provided with the drain outlet 103. The end of the drain outlet 103 away from the screw connector 102 is flat. Because the end of the drain outlet 103 is flat, the gap is small, which effectively prevents dust and dirt from entering the drain pipe 101 from the bottom of the drain outlet 103, causing blockage and preventing condensate from being discharged normally outside the vehicle.

[0024] The drain outlet 103 has mounting protrusions 104 on both sides of the end away from the screw connector 102. The filter screen has insertion posts 105 on both sides. Each mounting protrusion 104 has an insertion hole 113, which is adapted to the insertion hole 113. Each mounting protrusion 104 has a flexible insertion rod on its side, with the insertion end of the flexible insertion rod slidably connected to the side wall of the mounting protrusion 104. Each insertion post 105 has a fixing hole 114 on its side, with the insertion end of the flexible insertion rod adapted to the fixing hole 114. Each insertion end of the flexible insertion rod has a first inclined surface 115, and each insertion post 105 has a second inclined surface 116 at its bottom. Corresponding to the first inclined surface 115, the filter screen is placed at the port of the drain outlet 103, so that the insert 105 is inserted into the socket 113. During the insertion of the insert 105, the second inclined surface 116 applies force to the first inclined surface 115, causing the elastic rod to slide on the side of the mounting protrusion 104. When the end of the insert 105 is inserted to the bottom of the socket 113, the end of the elastic rod is inserted into the fixing hole 114 under the action of the restoring force, thereby completing the installation of the filter screen. By installing the filter screen at the end of the drain outlet 103, the filtration effect of dust in the outside air is improved, and it is further prevented that outside dust enters the interior of the drainage device from the bottom of the drain outlet 103.

[0025] Secondly, the fixing rod 106 is slidably connected to the side of the mounting protrusion 104. The fixing rod 106 is provided with the mounting block 107 at one end outside the mounting protrusion 104. The spring member 108 is provided between the mounting block 107 and the outer side wall of the mounting protrusion 104. The spring member 108 is provided outside the fixing rod 106. With the provision of the spring member 108, the end of the fixing rod 106 can be inserted into the fixing hole 114 under the action of the restoring force of the spring member 108, thereby completing the fixing of the insertion post 105.

[0026] Meanwhile, each mounting block 107 is provided with a pull ring 109 on the side away from the corresponding fixing rod 106. The pull ring 109 makes it more convenient to insert or remove the elastic rod.

[0027] In addition, the installation frame 111 is provided with the mesh body 110 inside, and the installation frame 111 is provided with installation blocks on both sides, and the installation blocks are provided with the insertion post 105. The installation frame 111 facilitates the installation of the filter screen.

[0028] Furthermore, the mounting frame 111 is provided with an embedding ring 112 on the side facing the drain outlet 103. The embedding ring 112 fits against the inner sidewall of the drain outlet 103. The embedding ring 112 makes the filter screen more securely installed at the port of the drain outlet 103.

[0029] When using the automotive air conditioning evaporator drainage device of this utility model, the end of the drain outlet 103 is flat and has a small gap, effectively preventing dust and dirt from entering the drain pipe 101 from the bottom of the drain outlet 103, causing blockage and preventing condensate from being discharged normally outside the vehicle. Furthermore, the filter screen is placed at the port of the drain outlet 103, allowing the insert 105 to be inserted into the insertion hole 113. During insertion, the second inclined surface 116 applies force to the first inclined surface 115, causing the elastic rod to slide on the side of the mounting protrusion 104. When the end of the insert 105 is inserted to the bottom of the insertion hole 113, the end of the elastic rod, under the action of restoring force, is inserted into the fixing hole 114, thus completing the installation of the filter screen. By installing the filter screen at the end of the drain outlet 103, the filtration effect of dust in the outside air is improved, further preventing external dust from entering the interior of the drainage device from the bottom of the drain outlet 103.

[0030] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A drain device for an automotive air conditioning evaporator, comprising a drain pipe, a screw connector, and a drain outlet, wherein one end of the drain pipe is connected to the water collection chamber of the evaporator chip, the other end of the drain pipe is provided with the screw connector, and the drain outlet is provided at the end of the screw connector away from the drain pipe, the end of the drain outlet away from the screw connector having a flat structure, characterized in that, It also includes filter components; The filter assembly includes a filter screen, two mounting protrusions, two posts, and two elastic rods. The mounting protrusions are located on both sides of the drain outlet away from the screw connector. The posts are located on both sides of the filter screen. Each mounting protrusion has a insertion hole, and the post is adapted to the insertion hole. Each mounting protrusion has an elastic rod on its side, and the insertion end of the elastic rod is slidably connected to the side wall of the mounting protrusion. Each post has a fixing hole on its side, and the insertion end of the elastic rod is adapted to the fixing hole. Each elastic rod has a first inclined surface at its insertion end, and each post has a second inclined surface at its bottom, the second inclined surface corresponding to the first inclined surface.

2. The automotive air conditioning evaporator drainage device as described in claim 1, characterized in that, Each of the resilient inserts includes a fixed rod, a mounting block, and a spring member. The fixed rod is slidably connected to the side of the mounting protrusion. The mounting block is provided at one end of the fixed rod located outside the mounting protrusion. The spring member is provided between the mounting block and the outer side wall of the mounting protrusion, and the spring member is located outside the fixed rod.

3. The automotive air conditioning evaporator drainage device as described in claim 2, characterized in that, Each of the resilient inserts further includes a pull ring, and the pull ring is provided on the side of each mounting block away from the corresponding fixed rod.

4. The automotive air conditioning evaporator drainage device as described in claim 3, characterized in that, The filter screen includes a screen body and a mounting frame. The screen body is disposed inside the mounting frame. Mounting blocks are disposed on both sides of the mounting frame, and the insertion posts are disposed on the mounting blocks.

5. The automotive air conditioning evaporator drainage device as described in claim 4, characterized in that, Each of the filter screens includes an insert ring, which is provided on the side of the mounting frame facing the drain outlet and is fitted against the inner sidewall of the drain outlet.

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