HVAC assembly

Abstract

The utility model relates to the technical field of automobile air conditioners, in particular to an HVAC assembly which comprises an HVAC assembly body (1). The HVAC assembly (1) is connected with a drain pipe (2); a water return prevention structure is arranged between the HVAC assembly (1) and the drainage pipe (2); a water return prevention structure is installed in the drainage pipe, and then the drainage pipe is connected with the HVAC assembly; when the HVAC assembly drains water, water flows into the water drainage pipe from the water return prevention structure, and therefore water drainage operation is achieved. When the vehicle wades and floats, the pressure difference is designed according to actual calculation, the water return prevention structure provides reverse thrust in a default state, it is ensured that dirty water cannot naturally flow backwards when the whole vehicle wades and floats, and therefore the situation that the HVAC assembly is damaged due to water return or rushes into an automobile passenger compartment from an HVAC air opening, and potential safety hazards are caused to passengers in the vehicle can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air conditioners, and in particular to an HVAC assembly. Background Art

[0002] HVAC (Heating, Ventilation, and Air Conditioning) stands for heating, ventilation, and air conditioning systems. Traditional HVAC assembly designs often use ordinary rubber drain pipes for drainage. During regular water crossings, the crossing time is typically brief, and there's usually no risk of water backflowing into the cabin. However, today's amphibious vehicles typically need to float across rivers for at least 30 minutes. The water level, which passes above the engine compartment, often exceeds the height of the HVAC air outlet. If the drain pipes are not sealed, large amounts of river water can flow back into the HVAC system. Once the water level exceeds the HVAC air outlet, it can then flow into the vehicle's passenger compartment through the HVAC vents, posing a safety hazard to the vehicle's occupants.

[0003] After searching, the applicant found that the Chinese patent document with publication number 214057169U disclosed a car HVAC system assembly fastening device on August 27, 2021, including a shell and an aluminum sheet. The upper part of the outer part of the shell is connected to the cover body by bolts, and the interior of the shell is provided with sound insulation cotton and pearl cotton from left to right. A mounting block is provided on the outside of the sound insulation cotton, and a rubber pad is fixed on the top of the mounting block. Fixed rods are fixed on both sides of the outside of the shell, and a T-shaped rod is provided under the fixing rod. A spring is installed on the outside of the T-shaped rod, and a T-shaped sleeve is provided on the outside of the spring; this device also cannot solve the above technical problems.

[0004] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the existing automobile HVAC structure. Utility Model Content

[0005] The purpose of the utility model is to provide an HVAC assembly capable of preventing water from flowing back into the HVAC assembly.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an HVAC assembly, including an HVAC assembly; the HVAC assembly is connected to a drain pipe; and an anti-backflow structure is provided between the HVAC assembly and the drain pipe.

[0007] The anti-backflow structure includes a one-way valve; the one-way valve is arranged in the drain pipe.

[0008] The drainage pipe is provided with a water inlet; a mounting groove is provided in the water inlet; and the one-way valve is arranged in the mounting groove.

[0009] The one-way valve is interference-fitted with the mounting groove.

[0010] The HVAC assembly is provided with a water outlet pipe; the water outlet pipe is connected to the drain pipe.

[0011] A bulge is provided on the outer wall of the water outlet pipe; the water outlet pipe and the mounting groove are interference fit; and the bulge abuts against the inner wall of the drain pipe.

[0012] The water inlet end of the one-way valve is close to the water outlet pipe; the water outlet end of the one-way valve is communicated with the drain pipe.

[0013] The drainage pipe is a rubber pipe.

[0014] The beneficial effects of this application are:

[0015] 1. This application installs a one-way valve at the end of a drain pipe, which is then connected to the outlet pipe of the HVAC assembly. When the HVAC assembly drains water through the outlet pipe, water flows from the one-way valve into the drain pipe, thereby achieving drainage. When the vehicle wades through water, the one-way valve provides reverse thrust in its default state based on the calculated pressure difference. This ensures that dirty or sewage water does not naturally flow back when the vehicle wades through water, thereby preventing backflow of water from damaging the HVAC assembly or flowing into the vehicle's passenger compartment through the HVAC vents, posing a safety hazard to the vehicle's occupants.

[0016] 2. In the present application, a protrusion is provided on the outer wall of the water outlet pipe of the HVAC assembly; the protrusion is a triangular barb; the drain pipe is a rubber hose; the water outlet pipe and the drain pipe have an interference fit, and the protrusion can clamp the inner wall of the drain pipe; thereby, a stable connection between the water outlet pipe and the drain pipe can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a structural diagram of the HVAC assembly.

[0019] Figure 2 for Figure 1 An enlarged view of the HVAC assembly at point A is shown.

[0020] Figure 3 Schematic diagram of the water outlet pipe of this HVAC assembly.

[0021] The marks in the above figure are:

[0022] The following are marked in the figure:

[0023] 1. HVAC assembly,

[0024] 2. Drain pipe, 201. Water inlet, 202. Installation slot,

[0025] 3. One-way valve,

[0026] 4. Water outlet pipe,

[0027] 5. Bump. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate its implementation.

[0029] Figure 1 The HVAC assembly shown includes an HVAC assembly 1 ; the HVAC assembly 1 is connected to a drain pipe 2 ; and an anti-backflow structure is provided between the HVAC assembly 1 and the drain pipe 2 .

[0030] An anti-backflow structure is installed in the drain pipe 2, and then the drain pipe 2 is connected to the HVAC assembly 1; when the HVAC assembly 1 drains water, water flows from the anti-backflow structure into the drain pipe 2, thereby realizing the drainage operation; when the vehicle wades and floats in water, the anti-backflow structure provides reverse thrust in the default state according to the actual calculated design pressure difference, ensuring that dirty and sewage will not naturally flow back when the entire vehicle wades and floats in water, thereby preventing the HVAC assembly 1 from being damaged by backflow or flowing into the car passenger compartment through the HVAC air vents, posing a hidden danger to the safety of the passengers in the car.

[0031] The anti-backflow structure includes a one-way valve 3 ; the one-way valve 3 is arranged in the drain pipe 2 .

[0032] The one-way valve 3 is a small cylindrical one-way valve; the one-way valve 3 may be an SMC AK series one-way valve; the one-way valve 3 allows water to flow freely in the direction from the HVAC assembly 1 to the drain pipe 2, but blocks water flow in the opposite direction; when water flows from the inlet end to the outlet end, the one-way valve 3 opens, allowing water to flow smoothly; once the water stops flowing or reverse pressure occurs, the valve disc automatically closes to prevent water from flowing back.

[0033] The drain pipe 2 is provided with a water inlet 201 ; a mounting groove 202 is provided in the water inlet 201 ; and the one-way valve 3 is provided in the mounting groove 202 .

[0034] The water inlet 201 of the drain pipe 2 is connected to the HVAC assembly 1; the installation groove 202 is an expanded opening at the end of the drain pipe 2, and the diameter of the installation groove 202 is larger than the inner diameter of the drain pipe 2; the size of the one-way valve 3 is larger than the diameter of the installation groove 202, so that the one-way valve 3 achieves an interference fit in the installation groove 202.

[0035] The one-way valve 3 is interference-fitted with the mounting groove 202 .

[0036] The one-way valve 3 is interference-fitted in the mounting groove 202, thereby achieving a fixed connection between the one-way valve 3 and the drain pipe 2; at the same time, it can ensure that the water flowing out of the HVAC assembly 1 can pass through the one-way valve 3 and then enter the drain pipe 2 for discharge; and it can ensure that the water flow in the drain pipe 2 is completely blocked by the one-way valve 3, avoiding flowing into the HVAC assembly from the connection between the one-way valve 3 and the drain pipe 2.

[0037] The HVAC assembly 1 is provided with a water outlet pipe 4 ; the water outlet pipe 4 is connected to the drain pipe 2 .

[0038] The water outlet pipe 4 is a metal pipe and is an integral structure with the HVAC assembly 1 ; the water in the HVAC assembly 1 is discharged through the water outlet pipe 4 ; the water outlet pipe 4 is fixedly connected to the drain pipe 2 .

[0039] A protrusion 5 is provided on the outer wall of the water outlet pipe 4 ; the water outlet pipe 4 is interference fit with the mounting groove 202 ; and the protrusion 5 abuts against the inner wall of the drain pipe 2 .

[0040] The protrusion 5 is a triangular barb, and the height of the barb is controlled within an error of 1±0.2mm; the drain pipe 2 is a rubber hose; the outlet pipe 4 and the drain pipe 2 have an interference fit, and the protrusion 5 can clamp the inner wall of the drain pipe 2; thereby achieving a stable connection between the outlet pipe 4 and the drain pipe 2; the unilateral interference fit between the outlet pipe 4 and the drain pipe 2 is designed to be 0.5mm.

[0041] The water inlet end of the one-way valve 3 is close to the water outlet pipe 4 ; the water outlet end of the one-way valve 3 is connected to the drain pipe 2 .

[0042] When the HVAC assembly 1 drains water through the outlet pipe 4, the water flows from the one-way valve 3 to the drain pipe 2, thereby realizing the drainage operation; when the vehicle wades and floats, the one-way valve 3 provides reverse thrust in the default state according to the actual calculated design pressure difference, ensuring that dirty and sewage will not naturally flow back when the entire vehicle wades and floats.

[0043] The drainage pipe 2 is a rubber pipe.

[0044] The drainage pipe 2 is made of rubber material, and the material hardness is controlled within the range of 60±5HA.

[0045] The specific workflow of this utility model is as follows:

[0046] When the HVAC assembly 1 drains water through the outlet pipe 4, the water flows from the one-way valve 3 to the drain pipe 2, thereby realizing the drainage operation; when the vehicle wades and floats, the one-way valve 3 provides reverse thrust in the default state according to the actual calculated design pressure difference, ensuring that dirty and sewage will not naturally flow back when the entire vehicle wades and floats.

[0047] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. An HVAC assembly, characterized in that: The invention comprises an HVAC assembly (1); the HVAC assembly (1) is connected to a drain pipe (2); and an anti-backflow structure is provided between the HVAC assembly (1) and the drain pipe (2); The anti-backflow structure includes a one-way valve (3); the one-way valve (3) is arranged in the drain pipe (2); The drainage pipe (2) is provided with a water inlet (201); a mounting groove (202) is provided in the water inlet (201); and the one-way valve (3) is provided in the mounting groove (202).

2. The HVAC assembly according to claim 1, wherein: The one-way valve (3) is interference-fitted with the mounting groove (202).

3. The HVAC assembly according to claim 2, wherein: The HVAC assembly (1) is provided with a water outlet pipe (4); the water outlet pipe (4) is connected to the drain pipe (2).

4. The HVAC assembly according to claim 3, wherein: A protrusion (5) is provided on the outer wall of the water outlet pipe (4); the water outlet pipe (4) and the mounting groove (202) are interference-fitted; and the protrusion (5) abuts against the inner wall of the drain pipe (2).

5. The HVAC assembly according to claim 4, characterized in that: The water inlet end of the one-way valve (3) is close to the water outlet pipe (4); the water outlet end of the one-way valve (3) is in communication with the drain pipe (2).

6. An HVAC assembly according to any one of claims 1 to 5, characterized in that: The drainage pipe (2) is a rubber pipe.

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