A passenger car air conditioner evaporator drainage structure

Abstract

This utility model discloses a drainage structure for a bus air conditioner evaporator, relating to the field of evaporator technology. The utility model includes a central pipe with two external ports. The first external port of the central pipe is connected to an installation connector for connection to the lower housing. The second external port of the central pipe is connected to a filter unit for intercepting impurities in the water passing through the central pipe. The filter unit has a drain interface. The first external port is installed at a higher horizontal height than the second external port. This utility model, by incorporating a filter drainage structure, filters impurities from condensate, reducing the risk of impurities clogging the hose and minimizing the occurrence of hose blockage. Furthermore, maintenance only requires working on the filter unit, simplifying maintenance compared to disassembling and cleaning the hose.

Description

Technical Field

[0001] This utility model relates to the field of evaporator technology, specifically to a drainage structure for a bus air conditioning evaporator. Background Technology

[0002] The evaporator of a bus air conditioner is a heat exchanger. High-pressure liquid refrigerant enters the evaporator through an expansion valve. Due to the atomizing effect of the expansion valve, the liquid refrigerant becomes a mist. The misty refrigerant then transforms into a gaseous state under low pressure. During this transformation, heat is absorbed, so the evaporator is cool at this time. When air passes through, it becomes cool air, achieving the purpose of cooling.

[0003] The condensate produced by the evaporator during the refrigeration process needs to be drained to prevent moisture accumulation. The entire drainage system is mainly divided into two parts: an internal drainage structure inside the evaporator shell and an external drainage structure outside the evaporator shell. The internal drainage structure mainly consists of a water collection pan and a drain trough, which is used to collect the condensate in one place and then discharge it into the external drainage structure. From there, it is discharged into the vehicle's drain pipe and finally to the outside.

[0004] However, the current external drainage structure can only serve as a connection. In actual use, it relies solely on the hose to complete the drainage function. Since impurities in the condensate will remain in the hose during the flow process, there is a risk of the hose becoming blocked. The current external drainage structure is too simple to deal with this situation, and maintenance can only be carried out after the blockage occurs. In view of this situation, this utility model proposes a drainage structure for the evaporator of a bus air conditioner. Utility Model Content

[0005] The purpose of this utility model is to provide a drainage structure for a bus air conditioner evaporator in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A bus air conditioner evaporator drainage structure includes an intermediate pipe with two external ports. The first external port of the intermediate pipe is connected to an installation connector for connection to a lower housing. The second external port of the intermediate pipe is connected to a filter unit for intercepting impurities in the water passing through the intermediate pipe. The filter unit is connected to a drainage interface. The first external port is installed at a higher horizontal height than the second external port.

[0008] Furthermore, the intermediate tube includes a connecting tube that is inclined after installation, a first external port of the connecting tube is connected to a first mounting tube, and a second external port of the connecting tube is connected to a second mounting tube.

[0009] Furthermore, the mounting joint includes a positioning tube, one end of which is equipped with a first connector, and an outer sleeve is fitted onto the first mounting tube, the outer sleeve being threadedly connected to the first connector.

[0010] Furthermore, the other end of the positioning tube is provided with a second connector.

[0011] Furthermore, one end of the outer sleeve is provided with a collar, which is sleeved on the first mounting tube and the two fit together. The end of the first mounting tube is provided with a limit ring.

[0012] Furthermore, a rubber sealing ring is embedded inside the collar.

[0013] Furthermore, the filter unit includes an outer tube that is threadedly connected to the second mounting pipe, and a plug is threadedly connected to the end of the outer tube, on which a filter cylinder is mounted.

[0014] Furthermore, the drain interface is connected to the outer pipe, and a protruding ring is constructed on the drain interface.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention uses a filter drainage structure to filter impurities in condensate, reducing the risk of impurities clogging the hose and minimizing the occurrence of hose blockage. Furthermore, maintenance only requires cleaning the filter unit, which reduces the difficulty of maintenance compared to disassembling and cleaning the hose. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a utility model Figure 1 Top view;

[0019] Figure 3 This is a utility model Figure 2 A cross-sectional view along the AA direction;

[0020] Figure 4 This is a utility model Figure 3 Enlarged view of the structure at point B in the middle;

[0021] Figure 5 This is a utility model Figure 3 Enlarged view of the structure at point C;

[0022] Reference numerals: 1. Intermediate pipe; 101. Connecting pipe; 102. First mounting pipe; 103. Second mounting pipe; 2. Mounting joint; 201. Positioning pipe; 202. Second joint; 203. First joint; 3. Filter unit; 301. Outer pipe; 302. Plug; 303. Filter cylinder; 304. Piston ring; 4. Drainage interface; 5. Limiting ring; 6. Collar; 7. Outer sleeve; 8. Rubber sealing ring; 9. Protruding ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0024] like Figures 1-5 As shown in the figure, an embodiment of the present invention provides a bus air conditioner evaporator drainage structure, including an intermediate pipe 1. The intermediate pipe 1 includes two external ports. The first external port of the intermediate pipe 1 is connected to an installation connector 2, which is used to connect to the lower housing. The second external port of the intermediate pipe 1 is connected to a filter unit 3, which is used to intercept impurities in the water passing through the intermediate pipe 1. The filter unit 3 is connected to a drainage interface 4. The horizontal installation height of the first external port is higher than that of the second external port.

[0025] The lower shell mentioned above is part of the evaporator shell. Structures such as the water collection tray are located in the lower shell. The collected condensate enters the intermediate pipe 1 through the installation joint 2. The intermediate pipe 1 itself has a height difference, which improves the flow of condensate. After passing through the intermediate pipe 1, the condensate enters the filter unit 3, where the filter unit 3 further intercepts impurities in the condensate. The treated condensate is discharged through the drain port 4, where a flexible hose is connected. One end of the flexible hose is inserted into the bus drainage channel, and the flexible hose completes the transportation of condensate.

[0026] This utility model uses a filter drainage structure to filter impurities in condensate, reducing the risk of impurities clogging the hose and minimizing the occurrence of hose blockage. Moreover, maintenance only requires the filter unit 3, which is much easier than disassembling the hose for cleaning.

[0027] like Figure 1As shown, in order to facilitate the flow of condensate and reduce the bending area of ​​the hose, in some embodiments, the intermediate pipe 1 includes a connecting pipe 101 that is inclined after installation. The first external port of the connecting pipe 101 is connected to a first mounting pipe 102, and the second external port of the connecting pipe 101 is connected to a second mounting pipe 103. The evaporator drain outlet itself has a certain height on the evaporator mounting surface. After the existing hose is installed, there is a bend. With the cooperation of the connecting pipe 101, the installation height of the second mounting pipe 103 is reduced, and the height difference is conducive to the flow of condensate. When the hose is connected to the drain interface 4, the bending area of ​​the hose itself is reduced, which is conducive to the flow of condensate.

[0028] like Figure 4 As shown, in some embodiments, the mounting connector 2 includes a positioning tube 201. One end of the positioning tube 201 is equipped with a first connector 203. An outer sleeve 7 is fitted onto the first mounting tube 102 and is threadedly connected to the first connector 203. The other end of the positioning tube 201 is equipped with a second connector 202. The second connector 202 is used to connect directly to the lower housing by a threaded connection. The design of adding the mounting connector 2 is to facilitate assembly. The mounting connector 2 serves as an intermediate component, facilitating the installation, disassembly, and maintenance of the intermediate tube 1.

[0029] like Figure 4 As shown, in some embodiments, one end of the outer sleeve 7 is constructed with a collar 6, which is sleeved on the first mounting tube 102 and the two fit together. The end of the first mounting tube 102 is constructed with a limiting ring 5, and the collar 6 is embedded with a rubber sealing ring 8. Considering that the structure of the intermediate tube 1 is not conducive to rotation in the narrow space on the top of the bus, the outer sleeve 7 is used to connect with the mounting joint 2. When docking, the outer sleeve 7 is moved on the first mounting tube 102, and the limiting ring 5 and the collar 6 cooperate to prevent the outer sleeve from separating from the first mounting tube 102. By continuously rotating the outer sleeve 7, the outer sleeve 7 can be threaded onto the first joint 203. At this time, the limiting ring 5 presses against the rubber sealing ring 8 to improve sealing and increase friction.

[0030] like Figure 5 As shown, in some embodiments, the filter unit 3 includes an outer tube 301 threadedly connected to the second mounting tube 103. A plug 302 is threadedly connected to the end of the outer tube 301. A filter cylinder 303 is mounted on the plug 302. A piston ring 304 is mounted on the end of the filter cylinder 303. The piston ring 304 fits tightly with the outer tube 301 to improve sealing. Condensate enters the clean area formed by the inner side of the outer tube 301 and the outer side of the filter cylinder 303 through the filter cylinder 303, and then is discharged through the drain port 4. When cleaning and maintenance are required, the plug 302 is removed, thereby moving the filter cylinder 303 out of the outer tube 301. The cleaning work is simple and easy to maintain.

[0031] like Figure 1 As shown, in some embodiments, the drain port 4 is connected to the outer pipe 301, and the drain port 4 is provided with a protruding ring 9. The protruding ring 9 is designed to improve the stability and sealing of the hose after it is fitted onto the drain connector.

[0032] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drainage structure for a bus air conditioner evaporator, characterized in that, The system includes an intermediate pipe (1), which has two external ports. The first external port of the intermediate pipe (1) is connected to an installation connector (2), which is used to connect to the lower housing. The second external port of the intermediate pipe (1) is connected to a filter unit (3), which is used to intercept impurities in the water passing through the intermediate pipe (1). The filter unit (3) is connected to a drain interface (4). The horizontal installation height of the first external port is higher than that of the second external port.

2. The bus air conditioner evaporator drainage structure according to claim 1, characterized in that, The intermediate tube (1) includes a connecting tube (101) that is inclined after installation. The first external port of the connecting tube (101) is connected to a first mounting tube (102), and the second external port of the connecting tube (101) is connected to a second mounting tube (103).

3. The bus air conditioner evaporator drainage structure according to claim 2, characterized in that, The mounting connector (2) includes a positioning tube (201), one end of which is equipped with a first connector (203). An outer sleeve (7) is fitted on the first mounting tube (102), and the outer sleeve (7) is threadedly connected to the first connector (203).

4. The bus air conditioner evaporator drainage structure according to claim 3, characterized in that, The other end of the positioning tube (201) is provided with a second connector (202).

5. The bus air conditioner evaporator drainage structure according to claim 3, characterized in that, The outer sleeve (7) has a collar (6) at one end, which is fitted onto the first mounting tube (102) and the two fit together. The end of the first mounting tube (102) has a limit ring (5).

6. The bus air conditioner evaporator drainage structure according to claim 5, characterized in that, The collar (6) is fitted with a rubber sealing ring (8).

7. The bus air conditioner evaporator drainage structure according to claim 2, characterized in that, The filter unit (3) includes an outer tube (301) that is threadedly connected to the second mounting tube (103), and a plug (302) is threadedly connected to the end of the outer tube (301), and a filter cylinder (303) is installed on the plug (302).

8. The bus air conditioner evaporator drainage structure according to claim 7, characterized in that, The drain port (4) is connected to the outer pipe (301), and a protruding ring (9) is constructed on the drain port (4).

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