A one-way backflow prevention condensate water treatment device for a vehicle air conditioning system and a method of using the same

By designing a one-way anti-backflow condensate treatment device in the vehicle air conditioning system, and utilizing a combination of rubber diaphragms and floating blocks, the problem of condensate backflow is solved, enabling normal drainage of condensate and blocking of external water flow, preventing silt blockage, and ensuring a clean interior environment.

CN117301816BActive Publication Date: 2025-12-16SHANGHAI E- CO PRECISION MFG CO LTD
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Patent Information

Application Number
CN202311410904.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-28
Publication Date
2025-12-16
Estimated Expiration
2043-10-28

AI Technical Summary

Technical Problem

The condensate produced by the existing vehicle air conditioning will be discharged naturally when cooling. However, when the vehicle is driving through water, mud and sand may block the condensate drain outlet, causing the condensate to flow back into the passenger compartment.

Method used

A one-way anti-backflow condensate treatment device was designed, comprising a first sealing housing, a rubber diaphragm, a filter screen, and a floating block. The device utilizes the gravity drainage function of the rubber diaphragm and the buoyancy sealing mechanism of the floating block, combined with the filter screen to filter out silt, to prevent condensate backflow.

Benefits of technology

It achieves normal drainage of condensate and effective blocking of external water flow, prevents mud and sand particles from entering, ensures that condensate does not flow back into the cab, and keeps the interior environment clean.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a one-way backflow-preventing condensate water treatment device for a vehicle air conditioning system and a use method thereof, and relates to the technical field of vehicle air conditioning condensate water treatment. The device is used to solve the problem that, when the existing vehicle air conditioner is cooling, condensate water is generated, flows out from the air conditioner drain pipe, and is naturally discharged along with gravity and drips to the ground. However, if the vehicle is involved in water, the condensate water discharge port may be blocked by silt in the water, and the condensate water may flow back into the cab. The device comprises a first sealing element housing, a second sealing element housing is arranged below the first sealing element housing, and the first sealing element housing and the second sealing element housing are welded into an integrated whole. The device further comprises a rubber diaphragm arranged inside the second sealing element housing, a diaphragm groove is arranged at the middle position of the rubber diaphragm, a diaphragm protrusion is arranged at the middle position of the outer wall of the rubber diaphragm, and a cross block is arranged at the upper end of the diaphragm protrusion.
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Description

Technical Field

[0001] This invention relates to the field of vehicle air conditioning condensate treatment technology, specifically to a one-way anti-backflow condensate treatment device for vehicle air conditioning systems and its usage method. Background Technology

[0002] Automotive air conditioning, or simply car air conditioning, is a system used to adjust and control the temperature, humidity, air cleanliness, and airflow inside a car cabin to optimal levels. It provides a comfortable environment for passengers, reduces travel fatigue, creates favorable working conditions for the driver, and plays a crucial role in ensuring safe driving. It typically includes a cooling system, a heating system, and a ventilation system. This combined system makes full use of the limited space inside the car, has a simple structure, and is easy to operate; it is a popular modern automotive air conditioning system internationally.

[0003] Existing vehicle air conditioners produce condensate during cooling. The condensate flows out from the air conditioner drain pipe and is naturally discharged by gravity, dripping onto the ground. However, if the vehicle drives through water, the mud and sand in the water may block the condensate drain outlet, causing the condensate to flow back into the passenger compartment. To address this, we provide a one-way anti-backflow condensate treatment device for vehicle air conditioning systems and its usage method. Summary of the Invention

[0004] The purpose of this invention is to provide a one-way anti-backflow condensate treatment device for vehicle air conditioning systems and its usage method, in order to solve the problem mentioned in the background art that existing vehicle air conditioning systems produce condensate during cooling. The condensate flows out from the air conditioning drain pipe and is naturally discharged by gravity, dripping onto the ground. However, if the vehicle is in water, the mud and sand in the water may block the condensate drain outlet, causing the condensate to backflow into the driver's cabin.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a one-way anti-backflow condensate treatment device for a vehicle air conditioning system, comprising a first sealing housing, a second sealing housing installed below the first sealing housing, and the first sealing housing and the second sealing housing being welded together.

[0006] Also includes:

[0007] A rubber diaphragm is disposed inside the housing of the second sealing element. A diaphragm groove is provided at the middle position of the rubber diaphragm, and a diaphragm protrusion is provided at the middle position of the outer wall of the rubber diaphragm. A cross block is provided at the upper end of the diaphragm protrusion.

[0008] A filter screen is installed at the middle position of the first sealing housing;

[0009] A floating block is arranged inside the first sealing shell and located between the filter screen and the rubber diaphragm.

[0010] Preferably, the outer wall of the filter screen is annularly distributed with four clamping blocks which are clamped with the filter screen.

[0011] Preferably, the rear end of the filter screen is provided with a second communication hole.

[0012] Preferably, a first communication hole is arranged at the middle position inside the second sealing shell.

[0013] Preferably, an annular protrusion is arranged on the outer wall of the second sealing shell, and the second sealing shell is clamped with the first sealing shell through the annular protrusion.

[0014] Preferably, the first sealing shell and the second sealing shell are both provided with a sealing assembly end, the outer wall of the sealing assembly end is provided with a threaded assembly rod, and the sealing assembly end and the threaded assembly rod are integrally formed.

[0015] Preferably, the threaded assembly rod is provided with a plug-in end at the end away from the sealing assembly end, and the threaded assembly rod and the plug-in end are integrally formed.

[0016] Preferably, the inside of the plug-in end is provided with an end hole, and the end hole is in communication with the first communication hole and the second communication hole, respectively.

[0017] Preferably, a method for using a one-way backflow prevention condensate water treatment device for a vehicle air conditioning system comprises the following steps:

[0018] Step one: place the rubber diaphragm in the second sealing shell, insert the diaphragm protrusion into the first communication hole, and place the cross block in the first communication hole;

[0019] Step two: place the filter screen in the first sealing shell, so that the filter screen is located at the front end of the second communication hole, four annularly distributed clamping blocks are used to clamp and fix the filter screen, and the floating block is placed between the filter screen and the rubber diaphragm;

[0020] Step three: after the internal parts are installed, insert the annular protrusion of the second sealing shell into the first sealing shell, and weld the two into one by welding;

[0021] Step four: place the second sealing shell upwards and the first sealing shell downwards, connect the threaded assembly rod with the condensate drain pipe of the vehicle, and insert the plug-in end into the drain pipe.

[0022] Step five: when the air conditioner in the car refrigeration, air conditioning condensate will flow down from the top, at this time it can rely on gravity to open the rubber diaphragm, so that condensate is not disturbed normal discharge; When there is external water flow from the bottom into the reverse, then the rubber diaphragm will be dead in the top layer, prevent water into the cab; The floating block is located below the rubber diaphragm, play a supplementary role, when there is water flow into the reverse, because the floating block itself density is less than the density of water, it will quickly float, against the rubber diaphragm above, make it more closed; The filter screen is located at the bottom of the internal structure, for preventing the river water larger particles of silt particles into the device to block.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] The diaphragm in the internal device is located at the top, when the air conditioner in the car refrigeration, air conditioning condensate will flow down from the top, at this time it can rely on gravity to open the diaphragm, so that condensate is not disturbed normal discharge; When there is external water flow from the bottom into the reverse, then the diaphragm will be dead in the top layer, prevent water into the cab. The floating block is located below the diaphragm, play a supplementary role, when there is water flow into the reverse, because the floating block itself density is less than the density of water, it will quickly float, against the diaphragm above, make it more closed, filter screen is located at the bottom of the internal structure, its role is to prevent the river water larger particles of silt particles into the device to block, through the combination of the above structure, can play the effect of condensate rely on gravity normal discharge, at the same time, external water flow will not flow into the car. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the whole structure schematic diagram of the present application;

[0026] Figure 2 It is the second sealing element shell partial structure schematic diagram of the present application;

[0027] Figure 3 It is the second sealing element shell internal structure schematic diagram of the present application;

[0028] Figure 4 It is the rubber diaphragm partial structure schematic diagram of the present application;

[0029] Figure 5 It is the floating block partial structure schematic diagram of the present application;

[0030] Figure 6 It is the first sealing element shell internal structure schematic diagram of the present application;

[0031] In the figure: 1, the first sealing shell; 2, sealing assembly end; 3, threaded combination rod; 4, plug-in end; 5, end hole; 6, second sealing shell; 7, annular protrusion; 8, rubber diaphragm; 9, diaphragm groove; 10, diaphragm protrusion; 11, cross block; 12, first communication hole; 13, clamping block; 14, floating block; 15, second communication hole; 16, filter screen. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0033] Please refer to Figures 1-6 An embodiment provided by the present application is a one-way anti-backflow condensate water treatment device for a vehicle air conditioning system, comprising a first sealing shell 1, a second sealing shell 6 is installed below the first sealing shell 1, and the first sealing shell 1 and the second sealing shell 6 are welded into one body;

[0034] Further comprising:

[0035] A rubber diaphragm 8 is arranged inside the second sealing shell 6, a diaphragm groove 9 is arranged at the middle position of the rubber diaphragm 8, a diaphragm protrusion 10 is arranged at the middle position of the outer wall of the rubber diaphragm 8, and a cross block 11 is arranged at the upper end of the diaphragm protrusion 10;

[0036] A filter screen 16 is installed at the middle position of the first sealing shell 1;

[0037] A floating block 14 is arranged inside the first sealing shell 1, and the floating block 14 is located between the filter screen 16 and the rubber diaphragm 8;

[0038] When the air conditioner in the vehicle is refrigerated, the air conditioner condensate water will flow down from above, at this time, it can open the rubber diaphragm 8 by gravity, so that the condensate water is not disturbed and normally discharged; when external water flow enters from below in reverse, the rubber diaphragm 8 will be dead on the uppermost layer, preventing water from entering the cab; the floating block 14 is located below the rubber diaphragm 8 and plays an auxiliary role, when water flow enters in reverse, because the density of the floating block 14 itself is less than the density of water, it will quickly float up and push against the rubber diaphragm 8 above, so that it is more tightly closed; the filter screen 16 is located at the lowermost position of the internal structure, for preventing larger sand particles in the river water from invading and thus blocking the inside.

[0039] Please refer to Figure 6 Four clamping blocks 13 are annularly arranged on the outer wall of the filter screen 16, and the clamping blocks 13 are clamped with the filter screen 16;

[0040] The rear end of the filter screen 16 is provided with a second communication hole 15;

[0041] The clamping block 13 is used to clamp and fix the filter screen 16, improve the stability of the filter screen 16, and ensure that the filter screen 16 can block the sand and impurities in the counter-flow water at the second communication hole 15.

[0042] Please refer to Figure 3 , the first communication hole 12 is arranged at the middle position of the inside of the second sealing element shell 6;

[0043] The first communication hole 12 is used for the downward discharge of the condensed water.

[0044] Please refer to Figure 1 , Figure 2 , the annular protrusion 7 is arranged on the outer wall of the second sealing element shell 6, and the second sealing element shell 6 is clamped with the first sealing element shell 1 through the annular protrusion 7;

[0045] The annular protrusion 7 can combine the second sealing element shell 6 with the first sealing element shell 1, and facilitate the welding operation after combination.

[0046] Please refer to Figure 1 , the sealing element combination end 2 is arranged at one end of the first sealing element shell 1 and the second sealing element shell 6, the threaded combination rod 3 is arranged on the outer wall of the sealing element combination end 2, and the sealing element combination end 2 and the threaded combination rod 3 are integrally formed;

[0047] The sealing element combination end 2 is used for placing the internal parts, and the threaded combination rod 3 is used for the combination and installation effect with the water pipe or water hole at the drain port.

[0048] Please refer to Figure 1 , Figure 3 , Figure 6 , the plug-in end head 4 is arranged at the end of the threaded combination rod 3 away from the sealing element combination end 2, and the threaded combination rod 3 and the plug-in end head 4 are integrally formed;

[0049] The end head through hole 5 is arranged in the inside of the plug-in end head 4, and the end head through hole 5 is respectively communicated with the first communication hole 12 and the second communication hole 15;

[0050] The plug-in end head 4 is used for the plug-in combination effect, the condensed water at the end head through hole 5 can directly flow into the first communication hole 12, and then flow from the first communication hole 12 into the second communication hole 15, and then flow out from the end head through hole 5 at the other end.

[0051] Please refer to Figures 1-6 , a method for using the one-way anti-backflow condensed water treatment device for a vehicle air conditioning system, comprising the following steps:

[0052] Step one: place the rubber diaphragm 8 in the second sealing element shell 6, insert the diaphragm protrusion 10 into the first communication hole 12, and make the cross block 11 located in the first communication hole 12;

[0053] Step two: place the filter screen 16 in the first sealing shell 1, with the filter screen 16 at the front end of the second communication hole 15, and the four ring-distributed clamping blocks 13 used to clamp and fix the filter screen 16, and place the floating block 14 between the filter screen 16 and the rubber diaphragm 8;

[0054] Step three: after the internal parts are installed, insert the ring-shaped protrusion 7 of the second sealing shell 6 into the first sealing shell 1, and weld the two into one by welding;

[0055] Step four: place the second sealing shell 6 upwards and the first sealing shell 1 downwards, connect the threaded combination rod 3 with the condensate drain pipe of the vehicle, and insert the plug-in end 4 into the drain pipe;

[0056] Step five: when the air conditioner is cooling, the condensate water will flow down from above, at which time it can open the rubber diaphragm 8 by gravity, so that the condensate water is not disturbed and is normally discharged; when there is an external water flow flowing into from below, the rubber diaphragm 8 will be dead on the uppermost layer, preventing water from entering the cab; the floating block 14 is below the rubber diaphragm 8, playing an auxiliary role, when there is a water flow flowing into from below, the floating block 14 will quickly float up due to its density being less than that of water, and push against the rubber diaphragm 8 above, making it more tightly closed; the filter screen 16 is at the lowermost part of the internal structure, used to prevent larger particles of silt in the river from entering and thus clogging the inside.

[0057] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present examples are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

Claims

1. A method for using a one-way backflow prevention condensate water treatment device for a vehicle air conditioning system, based on a one-way backflow prevention condensate water treatment device for a vehicle air conditioning system, characterized in that: The application discloses a one-way anti-backflow condensate water treatment device for a vehicle air conditioning system. The one-way anti-backflow condensate water treatment device for the vehicle air conditioning system further comprises: A rubber diaphragm (8) is arranged in the second sealing shell (6), a diaphragm groove (9) is arranged at the middle position of the rubber diaphragm (8), a diaphragm protruding block (10) is arranged at the middle position of the outer wall of the rubber diaphragm (8), and a cross block (11) is arranged at the upper end of the diaphragm protruding block (10); A filter screen (16) is arranged at the middle position of the first sealing shell (1); A floating block (14) is arranged in the first sealing shell (1) and is located between the filter screen (16) and the rubber diaphragm (8); Four clamping blocks (13) are annularly arranged on the outer wall of the filter screen (16) and are clamped with the filter screen (16), a second communication hole (15) is arranged at the rear end of the filter screen (16), a first communication hole (12) is arranged at the middle position of the inner wall of the second sealing shell (6), and an annular protruding block (7) is arranged on the outer wall of the second sealing shell (6) and is clamped with the first sealing shell (1); One end of the first sealing shell (1) and the second sealing shell (6) is provided with a sealing assembly end (2), a threaded assembly rod (3) is arranged on the outer wall of the sealing assembly end (2) and is integrally formed with the sealing assembly end (2), an insertion end head (4) is arranged at the end, away from the sealing assembly end (2), of the threaded assembly rod (3) and is integrally formed with the threaded assembly rod (3), and a head through hole (5) is arranged in the insertion end head (4) and is in communication with the first communication hole (12) and the second communication hole (15); The steps include the following steps: Step one: the rubber diaphragm (8) is placed in the second sealing shell (6), the diaphragm protruding block (10) is partially inserted into the first communication hole (12), and the cross block (11) is located in the first communication hole (12); Step two: the filter screen (16) is placed in the first sealing shell (1), the filter screen (16) is located at the front end of the second communication hole (15), the four annularly arranged clamping blocks (13) are used to clamp and fix the filter screen (16), and the floating block (14) is placed between the filter screen (16) and the rubber diaphragm (8); Step three: after the internal parts are installed, the annular protruding block (7) of the second sealing shell (6) is inserted into the first sealing shell (1), and the two are welded into an integrated whole through welding; Step four: the second sealing shell (6) is placed upwards, the first sealing shell (1) is placed downwards, the threaded assembly rod (3) is connected with the condensate drainage pipe of the vehicle, and the insertion end head (4) is inserted into the drainage pipe. Step five: when the air conditioner refrigeration, the air conditioner condensate will flow down from the top, at this time its gravity opens the rubber diaphragm (8), so that the condensate is not disturbed normal discharge; When there is an external water flow from the bottom into the reverse, then the rubber diaphragm (8) will be dead in the top layer, prevent water into the cab; The floating block (14) is located below the rubber diaphragm (8), play a supplementary role, when there is a water flow into the reverse, due to the floating block (14) itself density is less than the density of water, it will float up quickly, against the rubber diaphragm (8) above, so that it is more closed; The filter screen (16) is located in the lowermost inside structure, for preventing the river water larger particles of sand particles into the blockage.

Citation Information

Patent Citations

  • Novel agent adding valve suitable for pollution and blocking prevention during distillation of high-chlorine formation water

    CN113685598A

  • Check valve, air conditioner dripping pipe and vehicle

    CN212377374U

  • Condensate water discharging device of air conditioner

    CN213146777U

  • Drainage pipe and vehicle

    CN219339135U

  • One-way backflow prevention condensate water treatment device for vehicle air conditioning system

    CN221090429U