Mixed air new structure filter screen of bullet train air conditioning unit

Abstract

A mixed air new structure filter screen of a motor car air conditioning unit is used for being detachably installed in the motor car air conditioning unit and is characterized by comprising an installation frame and a filter screen assembly integrally embedded and pressed in the installation frame, and the filter screen assembly reaches the G3-level filtering efficiency; wherein the filter screen assembly comprises a front coarse-hole filter screen, a plurality of layers of vapor-liquid filter screens, a fine-hole filter screen and a rear coarse-hole filter screen which are arranged layer by layer in the filtering direction, and the front coarse-hole filter screen and the rear coarse-hole filter screen simultaneously clamp and position the vapor-liquid filter screens and the fine-hole filter screen front and back. The stainless steel mesh filter element is integrally formed, can be used for multiple times, can be integrally replaced after being cleaned, does not need a tedious filter element dismounting and mounting process, and is convenient and rapid to replace. And meanwhile, the G3 filtering efficiency required by the filter screen of the air conditioner of the motor train unit (Q / CR 811-2021) is met.

Description

Technical Field

[0001] The utility model relates to the technical field of motor vehicle air conditioning units, in particular to a new structure filter screen for mixed air of motor vehicle air conditioning units. Background Art

[0002] EMU, also known as "EMU train", is a transportation term and a type of modern train. It is composed of several powered vehicles and non-powered vehicles. The train runs in a fixed formation mode during its normal service life. EMU in the railway transportation system refers to "EMU passenger train". The train number starts with "D", referred to as "D-prefix train". Its comprehensive grade is higher than direct express trains and other conventional trains, but lower than the "high-speed EMU train" and "intercity EMU train" which were further subdivided by itself later.

[0003] The current CRH6F EMU air conditioning unit mixed air conditioning filter adopts a non-woven filter element fixed on an aluminum alloy frame. Among them, the core filter element is a non-woven fabric with G3 filtration efficiency that meets the requirements of "EMU Air Conditioning Filter" (Q / CR 811-2021). Because the material is non-woven fabric, it can be reused 3-4 times after cleaning before losing its filtering effect. And after the non-woven fabric fails, replacement requires manual disassembly and installation of the non-woven fabric, which is time-consuming and labor-intensive. Utility Model Content

[0004] The utility model aims to provide a new structure filter screen for mixed air of an EMU air conditioning unit, so as to solve the technical defects of the mixed air conditioning filter screen of the existing CRH6F EMU air conditioning unit.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A new structure filter screen for mixed air of a motor vehicle air conditioning unit, which is used for detachable installation in the motor vehicle air conditioning unit, characterized in that it comprises a mounting frame and a filter screen component integrally embedded and press-mounted in the mounting frame, and the filter screen component reaches the G3 level of filtering efficiency;

[0007] The filter assembly includes a front coarse-pore filter, several layers of gas-liquid filter, fine-pore filter, and a rear coarse-pore filter arranged layer by layer along the filtering direction. The front coarse-pore filter and the rear coarse-pore filter simultaneously clamp and position the gas-liquid filter and the fine-pore filter.

[0008] Furthermore, the number of layers of the gas-liquid filter is seven, the wire diameter of the gas-liquid filter is 0.23 mm, and when pressed, the gas-liquid filter is pressed into an arc-shaped corrugated shape.

[0009] Furthermore, the fine-pore filter is an 80-mesh stainless steel filter, the wire diameter of the fine-pore filter is 0.12 mm, and when pressed, the fine-pore filter is pressed into a triangular corrugated structure, wherein the triangular corrugation has a width of 20 mm and a height of 8 mm.

[0010] Furthermore, the front coarse-pore filter screen and the rear coarse-pore filter screen are stainless steel filter screens, and the wire diameter of the front coarse-pore filter screen and the rear coarse-pore filter screen is 1.8 mm and the hole diameter is 25 mm.

[0011] Furthermore, the installation frame is made of a 1.2 mm stainless steel plate with folded edges, and the inner circumference of the installation frame forms a U-shaped inner groove for installing the filter assembly, and the entire installation frame is fixed with rivets.

[0012] Furthermore, a group of movable handles are arranged on the upper side of the mounting frame, and a group of fixed handles are arranged on the lower side through countersunk rivets.

[0013] Furthermore, an identification sticker for identifying the filtering direction is provided on the upper side of the mounting frame.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model proposes a new structure filter for mixed air of a motor vehicle air conditioning unit, which is provided with a front coarse-pore filter, a seven-layer gas-liquid filter, an 80-mesh stainless steel filter, and a rear coarse-pore filter layer by layer along the filtering direction in the installation frame, wherein the 7 layers of the gas-liquid filter and the 80-mesh stainless steel filter are pressed into the frame by a press-fit method, and in order to ensure that the filter element is compact in the frame, the 7 layers of the gas-liquid filter and the 80-mesh stainless steel filter are pressed into a wavy structure with different curvatures. The utility model adopts a stainless steel mesh filter element, which is integrally formed and can be used multiple times. After the whole is cleaned, it can be replaced as a whole, without the need for a tedious process of disassembling and assembling the filter element, and the replacement is convenient and quick. At the same time, it meets the G3 filtration efficiency required by the "Motor Vehicle Air Conditioning Filter" (Q / CR811-2021). BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a top view of the utility model;

[0019] Figure 3 for Figure 1 AA cross-sectional diagram of ;

[0020] Figure 4 for Figure 3 The part of the picture is the big picture;

[0021] Figure 5 This is a schematic diagram of the structure of the front coarse-hole filter and the rear coarse-hole filter of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the gas-liquid filter of the utility model;

[0023] Figure 7 This is a schematic diagram of the fine-pore filter structure of the utility model.

[0024] In the figure: 1. Installation frame, 2. Movable handle, 4. Fixed handle, 5. Front coarse-pore filter, 6. Gas-liquid filter, 7. Countersunk rivet, 8. Fine-pore filter, 9. Identification sticker. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] like Figure 1-7 As shown, a new structure filter screen for mixed air of a motor vehicle air conditioning unit is used for detachable installation in the motor vehicle air conditioning unit, comprising a mounting frame 1, and a filter screen component integrally embedded and press-fitted in the mounting frame, wherein the filter screen component reaches the G3 level of filtering efficiency;

[0030] The filter assembly includes a front coarse-pore filter 5, several layers of gas-liquid filter 6, a fine-pore filter 8, and a rear coarse-pore filter arranged layer by layer along the filtering direction. The front coarse-pore filter 5 and the rear coarse-pore filter simultaneously clamp and position the gas-liquid filter 6 and the fine-pore filter 8. The number of layers of the gas-liquid filter 6 is seven, and the wire diameter of the gas-liquid filter 6 is 0.23mm. When pressed, the gas-liquid filter 6 is pressed into an arc-shaped corrugated shape. The fine-pore filter 8 is an 80-mesh stainless steel filter, and the wire diameter of the fine-pore filter 8 is 0.12mm. When pressed, the fine-pore filter 8 is pressed into a triangular corrugated structure, wherein the triangular corrugation has a width of 20mm and a height of 8mm. The front coarse-pore filter 5 and the rear coarse-pore filter are stainless steel filter screens, and the wire diameter of the front coarse-pore filter 5 and the rear coarse-pore filter is 1.8mm and the pore diameter is 25mm.

[0031] The utility model proposes a new structure filter for mixed air of a motor vehicle air conditioning unit, which is provided with a front coarse-pore filter 5, a seven-layer gas-liquid filter 6, an 80-mesh stainless steel filter, and a rear coarse-pore filter layer by layer along the filtering direction in the installation frame 1, wherein the 7-layer gas-liquid filter and the 80-mesh stainless steel filter are pressed into the frame by a press-fit method, and in order to ensure that the filter element is compact in the frame, the 7-layer gas-liquid filter and the 80-mesh stainless steel filter are pressed into a wavy structure with different curvatures. The utility model adopts a stainless steel mesh filter element, which is integrally formed and can be used multiple times. After the whole is cleaned, it can be replaced as a whole, without the need for a tedious process of disassembling and assembling the filter element, and the replacement is convenient and quick. At the same time, it meets the G3 filtration efficiency required by the "Motor Vehicle Air Conditioning Filter" (Q / CR 811-2021).

[0032] Specifically, as shown in the figure, in order to maintain a suitable match between the overall weight and structure, the mounting frame 1 is made of 1.2 mm stainless steel plate with folded edges, and the inner peripheral side of the mounting frame 1 forms a U-shaped inner groove for mounting the filter assembly, and the mounting frame 1 is fixed as a whole with rivets.

[0033] Specifically, as shown in the figure, a set of movable handles 2 are provided on the upper side of the mounting frame 1, and a set of fixed handles 4 are provided on the lower side through countersunk rivets 7. When the filter needs to be replaced or cleaned, the staff can manually hold the movable handle to remove the utility model as a whole from the motor vehicle air conditioning unit, and after the filter is cleaned as a whole, the whole is replaced without the cumbersome process of disassembling and assembling the filter element, and the replacement is convenient and quick. The fixed handle is used to facilitate the transportation of the filter.

[0034] Specifically, as shown in the figure, an identification sticker 9 for identifying the filtering direction is provided on the upper side of the installation frame 1.

[0035] The utility model greatly reduces working time and improves labor efficiency. The labor hours for replacing filters with the new structure can be shortened by 50%, saving 7440 man-hours*0.1 hours per year; greatly improving filter turnover efficiency and reducing inventory. The new structure filter only needs to be stockpiled according to the quantity consumed by one set of cars to meet demand, which neither takes up too much storage space nor consumes too much cost, greatly reducing the cost of maintenance consumables. The new structure filter saves 35.3 yuan / sheet / time compared to the prototype, which can save 9,000 yuan per set of cars per year; CRH6F EMUs can save 18,000 yuan / year / set. The maintenance cost of the mixed air filter of the air conditioner of the CRH6A platform EMU of Guangzhou Bureau Group Corporation can be saved by about 1.503 million yuan each year

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A new structure filter screen for mixed air of a motor vehicle air conditioning unit, which is used for detachable installation in the motor vehicle air conditioning unit, characterized in that: It comprises a mounting frame (1), and a filter assembly integrally embedded and press-fitted in the mounting frame, wherein the filter assembly has a G3 level of filtering efficiency; The filter assembly comprises a front coarse-pore filter (5), a plurality of layers of gas-liquid filter (6), a fine-pore filter (8), and a rear coarse-pore filter arranged layer by layer along the filtering direction, wherein the front coarse-pore filter (5) and the rear coarse-pore filter simultaneously clamp and position the gas-liquid filter (6) and the fine-pore filter (8) in the front and rear directions.

2. A new structure filter screen for mixed air of a motor vehicle air conditioning unit according to claim 1, characterized in that: The number of layers of the gas-liquid filter (6) is seven, the wire diameter of the gas-liquid filter (6) is 0.23 mm, and when in a press-fit state, the gas-liquid filter (6) is pressed into an arc-shaped corrugated shape.

3. A new structure filter screen for mixed air of a motor vehicle air conditioning unit according to claim 2, characterized in that: The fine-pore filter (8) is an 80-mesh stainless steel filter, the wire diameter of the fine-pore filter (8) is 0.12 mm, and when pressed, the fine-pore filter (8) is pressed into a triangular corrugated structure, wherein the triangular corrugation has a width of 20 mm and a height of 8 mm.

4. A new structure filter screen for mixed air of a motor vehicle air conditioning unit according to claim 3, characterized in that: The front coarse-pore filter (5) and the rear coarse-pore filter are stainless steel filter screens, and the wire diameter of the front coarse-pore filter (5) and the rear coarse-pore filter is 1.8 mm and the hole diameter is 25 mm.

5. A new structure filter screen for mixed air of a motor vehicle air conditioning unit according to claim 1, characterized in that: The installation frame (1) is made of a 1.2 mm stainless steel plate with folded edges, and the inner peripheral side of the installation frame (1) forms a U-shaped inner groove for installing the filter assembly. The installation frame (1) is fixed as a whole by rivets.

6. A new structure filter screen for mixed air of a motor vehicle air conditioning unit according to claim 5, characterized in that: A group of movable handles (2) are arranged on the upper side of the installation frame (1), and a group of fixed handles (4) are arranged on the lower side via countersunk rivets (7).

7. A new structure filter screen for mixed air of a motor vehicle air conditioning unit according to claim 6, characterized in that: An identification sticker (9) for identifying the filtering direction is arranged on the upper side of the installation frame (1).

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