Rain and snow-proof fresh air device and air conditioning unit

Abstract

The utility model provides a kind of new air device of rain and snow prevention, including new air passage, the new air passage is sequentially provided with air inlet grille, rainwater separation device and new air filter screen from outside to inside, the air inlet grille is spaced apart with the rainwater separation device;Multiple grates are provided on the air inlet grille, the grate is obliquely arranged, the lower portion of each grate is provided with air inlet, and the air inlet is inclined upward air inlet.The utility model further provides a kind of air conditioning unit.The new air device of rain and snow prevention and air conditioning unit provided by the utility model are provided with inclined grates at air inlet grille, the air inlet of the bottom of the grate is inclined upward air inlet, the rain and snow prevention function is realized by mechanical structure rather than electric heating, energy consumption is reduced, manual intervention is reduced, equipment reliability and maintenance convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning unit technology, and in particular to a rainproof and snowproof fresh air device and air conditioning unit. Background Technology

[0002] While providing efficient transportation, rail vehicles must also consider providing a comfortable riding environment for passengers inside the carriages. They should be able to adaptively adjust the temperature and humidity inside the carriages according to changes in the environment, as well as adjust the fresh air volume inside the carriages, to avoid problems such as air pollution and decreased oxygen content inside the carriages, which would affect passenger comfort.

[0003] To address the issues of temperature, humidity, and fresh air intake inside the train, existing rail vehicles are equipped with air conditioning units. These units have fresh air vents that introduce a fixed amount of fresh air into the train and adjust the temperature and humidity inside.

[0004] The fresh air inlet connects to the air conditioning unit via a fresh air duct to introduce fresh air into the room. Existing fresh air systems in the rail industry have the following problems:

[0005] Traditional rainwater separators have a single function, only separating rainwater, and cannot cope with heavy snow in high-altitude and cold regions.

[0006] During heavy snowfall, the air vents of the generator set are easily blocked by snow accumulation, preventing fresh air from entering and affecting the air quality inside the cabin.

[0007] When the fresh air vents become blocked, the load on the air conditioning system increases, energy consumption rises, and the comfort of the cabin environment decreases.

[0008] To address the aforementioned issues, improvements have been made to the fresh air system, resulting in a device that effectively prevents rain and snow from covering the air inlets, ensuring the normal operation of the rail air conditioning system in cold regions. Currently, the traditional rain and snow-proof fresh air systems in the rail industry mainly include the following two types:

[0009] Rainwater separators are installed to separate rainwater through baffles and diversion structures, but they cannot cope with heavy snow.

[0010] Installing a separator device with electric heating function can prevent snow accumulation through electric heating, but it still has disadvantages such as high heating energy consumption, poor economic efficiency, easy aging of equipment with long-term use, and high maintenance costs.

[0011] A fresh air device that can simultaneously prevent rain and snow is provided;

[0012] Snow protection is achieved through mechanical structures rather than electric heating, reducing energy consumption;

[0013] Reduce human intervention and improve equipment reliability and ease of maintenance. Utility Model Content

[0014] To address the technical problems in the prior art, this utility model provides a rain and snow-proof fresh air device and air conditioning unit. An inclined grille is set at the air inlet grille, and an inclined upward air inlet is set at the bottom of the grille. The rain and snow protection function is achieved through mechanical structure rather than electric heating, which reduces energy consumption, reduces manual intervention, and improves equipment reliability and maintenance convenience.

[0015] To solve the above-mentioned technical problems, this utility model first provides a rain and snow-proof fresh air device, which adopts the following technical solution:

[0016] A rain and snow protection fresh air device includes a fresh air duct. The fresh air duct is provided with an air inlet grille, a rainwater separation device and a fresh air filter arranged sequentially from the outside to the inside. The air inlet grille and the rainwater separation device are arranged at intervals. The air inlet grille is provided with multiple grilles, which are inclined. Each grille has an air inlet at its lower part, and the air inlet is inclined upward to allow air to enter.

[0017] Furthermore, a slot is provided on the top wall of the fresh air duct behind the rainwater separation device, and the fresh air filter can be detachably inserted into the fresh air duct from the slot.

[0018] Furthermore, a baffle plate is provided on the top of the fresh air filter, and the width of the baffle plate is greater than the width of the slot, thus covering the slot opening.

[0019] Furthermore, the fresh air filter and the fresh air duct are fastened together by a fastening assembly.

[0020] Furthermore, fasteners are provided on both sides of the fresh air duct, and the two ends of the baffle plate are provided with plates extending from the side walls of the fresh air duct, and the plates are fastened and fixed by the fasteners.

[0021] Furthermore, the long sides of the water baffle are bent upwards on both sides, and the bending length is less than the length of the water baffle.

[0022] Furthermore, a buckle overlap space and a drainage space are provided between the board and the bend.

[0023] Furthermore, at the connection between the mounting plate and the main body of the water baffle, a groove is provided for the buckle to overlap, and a drainage space is left between the groove and the bend.

[0024] Furthermore, the air inlet of the fresh air duct is inclined, and the inclination direction of the air inlet is the same as the inclination direction of the grille.

[0025] The second objective of this invention is to provide an air conditioning unit, which adopts the following technical solution:

[0026] An air conditioning unit is equipped with a fresh air device as described above that is protected against rain and snow.

[0027] In summary, the rainproof and snowproof fresh air device and air conditioning unit provided by this utility model have the following advantages compared with the prior art:

[0028] The inclined air intake grille allows snow to slide down the grille under the influence of gravity, preventing snow accumulation in the direction of the air intake.

[0029] An air inlet is set at the bottom of the grille, so that the air inlet is hidden on the back of the grille, and the air inlet is tilted upward to effectively prevent rainwater from entering the fresh air channel from the air inlet.

[0030] Rainwater separation devices and filters further isolate the small amount of rain and snow that drifts in from the air inlet;

[0031] The air intake grille and air inlet are set at an angle, so that the wind and snow slide directly off under the action of gravity. The snow is removed by mechanical means rather than by electric heating, and the slope naturally guides the snow, reducing energy consumption.

[0032] A rainwater collector is installed to separate and collect rainwater and melted snow water that enters the snow melting device, and in conjunction with a heating device, to reduce the humidity of the fresh air.

[0033] The system includes a slot for installing the fresh air filter, allowing for direct replacement of the filter from the outside of the fresh air duct, thus improving maintenance efficiency.

[0034] A water baffle is installed at the fresh air filter, and drainage spaces are provided at both ends of the water baffle to prevent rainwater or melted snow from entering the fresh air duct through the slot.

[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0036] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0037] In the attached diagram:

[0038] Figure 1 This is a schematic diagram of the overall structure of a rain and snow-proof fresh air device according to this utility model;

[0039] Figure 2 This is a front view of a rain and snow-proof fresh air device according to this utility model;

[0040] Figure 3 yes Figure 2 Sectional view in the AA direction (and) Figure 2 (Not proportional).

[0041] In the picture:

[0042] 1. Rainwater separation device; 2. Air inlet grille; 3. Bolt; 4. Fresh air filter; 5. Air conditioning unit; 6. Fresh air duct; 7. Slot; 8. Buckle; 9. Water baffle; 10. Handle.

[0043] It should be noted that the accompanying drawings and text description are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0045] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] This utility model first provides a wind and snow protection fresh air device, including a fresh air channel 6. The fresh air channel 6 is arranged sequentially from the outside to the inside with an air inlet grille 2, a rainwater separation device 1 and a fresh air filter. The air inlet grille 2 and the rainwater separation device 1 are arranged at intervals. The air inlet grille 2 is provided with multiple grilles, which are inclined. Each grille has an air inlet at its lower part, and the air inlet is inclined upward to allow air to enter.

[0048] This utility model provides a rain and snow resistant fresh air device that can be assembled and fixed with an air conditioning unit 5 and a fresh air unit. Furthermore, it is also applicable to air conditioning units 5 used in rail vehicles. In this application, the specific structure of the rain and snow resistant fresh air device provided in this application is described using the fresh air device installed on the air conditioning unit 5 configured on a rail vehicle as an example.

[0049] like Figures 1 to 3 As shown, the rain and snow-proof fresh air device provided by this utility model includes a fresh air device, which is assembled and fixed with the housing of the air conditioning unit 5. The fresh air device includes a fresh air duct 6, and at least part of the fresh air device is exposed outside the housing in the fresh air duct 6. The rain and snow-proof related structures provided in this application are all set at this exposed section of the fresh air duct 6.

[0050] The top wall length of the fresh air duct 6 is shorter than the bottom wall length, which makes the air inlet inclined, increasing the air intake area. An air intake grille 2 is installed at the air inlet. The air intake grille 2 is fixed to the air inlet of the fresh air duct 6 by bolts 3, and a waterproof sealing gasket is installed at the bolt 3 to prevent rain and snow from entering the fresh air duct 6 along the bolt holes.

[0051] The air intake grille 2 has multiple evenly distributed and parallel grilles, each grille inclined along the main structure of the air intake grille 2. The inclination angle can be adjusted according to the actual use environment, preferably 30°-60°. The inclination direction of the grille causes its top to extend outward and its bottom to taper inward, forming a "high on the outside and low on the inside" sloping structure. This design allows rain and snow to slide down the grille surface using gravity, preventing them from accumulating at the grille.

[0052] An air inlet is formed at the lower part of each grille, specifically at the inner gap between two adjacent grilles in the same column. The air inlet is located at the bottom of the grille and allows for upward airflow at an angle, consistent with the angle of the grille. The back of the grille (the side facing the inside of the fresh air duct 6) forms an air inlet sidewall. The main structure of the air inlet grille 2 also includes a section of air wall spaced a certain distance from the back of the grille. This air wall connects to the back of the grille, allowing the air to flow upwards from the bottom of the grille, forming a Z-shaped airflow path. This design hides the air inlet below the grille, reducing the probability of rain and snow directly entering the air inlet. Furthermore, the upward-sloping airflow direction guides the airflow upwards into the fresh air duct 6, further reducing the risk of rain and snow entering with the airflow.

[0053] The tilted grille allows snowflakes to slide down its surface under gravity, making it difficult for them to accumulate. Meanwhile, the upward-sloping air inlet hidden beneath the grille reduces the probability of snowflakes entering with the airflow. Snow prevention is achieved through a purely mechanical structure, eliminating the need for electric heating and significantly reducing energy consumption.

[0054] Along the air intake direction, at intervals along the inner side of the air intake grille 2, rainwater separation devices 1 are fixed. The air intake grille 2 and the rainwater separation devices 1 are spaced apart to temporarily store small amounts of falling rain and snow, preventing them from directly impacting the rainwater separation devices 1. Drainage devices installed on the bottom wall of the fresh air duct 6 between the air intake grille 2 and the rainwater separation devices 1, and / or at the rainwater separation devices 1, discharge the snow water and water separated by the rainwater separation devices 1 temporarily stored between the air intake grille 2 and the rainwater separation devices 1 into the fresh air duct 6.

[0055] Preferred, such as Figure 3 As shown, the bottom wall of the fresh air duct 6 outside the rainwater separation device 1 is inclined downward compared with the bottom wall of the main structure of the fresh air duct 6, and a drainage device is set at the lowest point, so that the rain and snow temporarily stored between the air intake grille 2 and the rainwater separation device 1 slide down the inclined bottom wall and are eventually discharged.

[0056] A slot 7 is provided on the top wall of the fresh air duct 6 at the rear of the rainwater separation device 1. The fresh air filter 4 can be detachably inserted into the fresh air duct 6 through the slot 7, which facilitates regular replacement or cleaning of the filter. The rainwater separation device 1 can adopt the baffle-type separation structure in the prior art, which uses inertia to separate rainwater. Its specific structure is not required or limited. Existing or future rainwater separation devices 1 are all applicable to this application.

[0057] The inclined air intake grille 2 and its inclined structure can block most of the direct impact of rainwater. The small amount of rainwater carried by the air and drifting in with the airflow will be further intercepted by the rainwater separation device 1. Even if a small amount of rainwater passes through the rainwater separation device 1, the fresh air filter 4 can absorb and filter it. In addition, the water baffle 9 covers the slot 7, and with the drainage space design, it can completely prevent rainwater from seeping into the slot 7.

[0058] A baffle plate 9 is fixedly installed on the top of the fresh air filter 4. The width of the baffle plate 9 is greater than the width of the slot 7, which can completely cover the slot opening of the slot 7. Preferably, a sealing strip can be installed on the bottom surface of the baffle plate 9 to prevent rain and snow from entering the slot 7 through the gap between the baffle plate 9 and the top wall and wetting the fresh air filter 4.

[0059] The long sides of both sides of the baffle plate 9 (along its length) are bent upwards, with a preferred bending height of 5-10mm and a bending length less than or equal to the length of the baffle plate 9, to prevent the bent portion from extending beyond the sidewall of the fresh air duct 6. This bending structure strengthens the overall strength of the baffle plate 9 while further preventing water flowing along its surface from overflowing to both sides. Furthermore, the baffle plate 9 covers the slot 7, and in conjunction with the drainage space design, completely prevents rainwater from seeping into the slot 7.

[0060] A handle 10 is provided at the top center of the baffle plate 9 to facilitate the insertion and replacement of the fresh air filter.

[0061] To ensure that the fresh air filter 4 is securely installed, the fresh air filter 4 and the fresh air duct 6 are fastened together by a fastener 8 assembly. The fastener 8 assembly includes fasteners 8 symmetrically fixed on both sides of the fresh air duct 6. The fasteners 8 can be elastic fasteners 8 in the prior art, with a flip-out fastening part. The specific structure is not required or limited. Existing or future fastener 8 structures are all applicable to this application.

[0062] Both ends of the baffle plate 9 (the side perpendicular to the bend) are integrally formed with a gusset plate. The gusset plate extends horizontally out of the side wall of the fresh air duct 6, corresponding to the position of the latch 8, and its width is less than or equal to the internal space width of the latch 8.

[0063] The main structure of the ramp and the water baffle 9 is integrally formed and slightly raised to prevent the fastening part of the buckle 8 from falling off the ramp.

[0064] A gap is left between the lap board and the bent part of the baffle 9. This gap serves as both an overlap space to ensure that the buckle 8 can be fastened smoothly and a drainage space to allow water on the surface of the baffle 9 to drain downwards.

[0065] A groove is provided at the connection between the extension plate and the main structure of the baffle plate 9. The size of the groove matches the fastening part of the buckle 8, allowing the fastening part of the buckle 8 to be inserted and overlapped for fixation, further preventing the fastening part of the buckle 8 from locking and fixing with the extension plate, and preventing it from falling off. A gap is left between the groove and the bend as a drainage space. The main structure / extension plate of the baffle plate 9 at the drainage space is inclined to facilitate the smooth drainage of water on the top surface of the baffle plate 9, avoiding accumulation at the connection of the buckle 8, and further ensuring smooth drainage.

[0066] The fresh air filter 4 is inserted through the slot 7 and fixed by the buckle 8. When disassembling, simply flip the buckle 8 to pull the filter out of the slot 7. The operation is simple, requires no tools, and significantly improves maintenance efficiency.

[0067] This utility model further provides an air conditioning unit 5, which is equipped with the aforementioned rain and snow protection fresh air device. Through the fresh air duct 6 connected to the internal air duct of the air conditioning unit 5, it can effectively resist rain and snow while ensuring sufficient fresh air is introduced into the vehicle compartment, thus ensuring the stable operation of the air conditioning unit 5 under complex weather conditions.

[0068] In summary, the rainproof and snowproof fresh air device and air conditioning unit provided by this utility model have the following advantages compared with the prior art:

[0069] The inclined air intake grille allows snow to slide down the grille under the influence of gravity, preventing snow accumulation in the direction of the air intake.

[0070] An air inlet is set at the bottom of the grille, so that the air inlet is hidden on the back of the grille, and the air inlet is tilted upward to effectively prevent rainwater from entering the fresh air channel from the air inlet.

[0071] Rainwater separation devices and filters further isolate the small amount of rain and snow that drifts in from the air inlet;

[0072] The air intake grille and air inlet are set at an angle, so that the wind and snow slide directly off under the action of gravity. The snow is removed by mechanical means rather than by electric heating, and the slope naturally guides the snow, reducing energy consumption.

[0073] A rainwater collector is installed to separate and collect rainwater and melted snow water that enters the snow melting device, and in conjunction with a heating device, to reduce the humidity of the fresh air.

[0074] The system includes a slot for installing the fresh air filter, allowing for direct replacement of the filter from the outside of the fresh air duct, thus improving maintenance efficiency.

[0075] A water baffle is installed at the fresh air filter, and drainage spaces are provided at both ends of the water baffle to prevent rainwater or melted snow from entering the fresh air duct through the slot.

[0076] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A rain and snow-proof fresh air device, comprising a fresh air duct, characterized in that: The fresh air duct is provided with an air inlet grille, a rainwater separation device and a fresh air filter in sequence from the outside to the inside. The air inlet grille and the rainwater separation device are arranged at intervals. The air inlet grille is provided with multiple grilles, which are inclined. Each grille has an air inlet at its lower part, and the air inlet is inclined upward to allow air to enter.

2. The rain and snowproof fresh air device as described in claim 1, characterized in that: A slot is provided on the top wall of the fresh air duct behind the rainwater separation device, and the fresh air filter is detachably inserted into the fresh air duct from the slot.

3. A rain and snow-proof fresh air device as described in claim 2, characterized in that: The top of the fresh air filter is provided with a baffle plate, the width of which is greater than the width of the slot, thus covering the slot opening.

4. A rain and snow-proof fresh air device as described in claim 3, characterized in that: The fresh air filter and the fresh air duct are fastened together by a fastener assembly.

5. A rain and snow ventilator as described in claim 4, characterized in that: Fasteners are provided on both sides of the fresh air duct, and the two ends of the baffle plate are provided with plates extending out of the side walls of the fresh air duct, and the plates are fastened and fixed by the fasteners.

6. A rain and snow ventilator as described in claim 5, characterized in that: The long sides of the water baffle are bent upwards on both sides, and the bending length is less than the length of the water baffle.

7. A rain and snow ventilator as described in claim 6, characterized in that: The mounting plate and the bend are provided with a fastener overlap space and a drainage space.

8. A rain and snow ventilator as described in claim 7, characterized in that: At the connection between the mounting plate and the main body of the water baffle, a groove is provided for the buckle to overlap, and a drainage space is left between the groove and the bend.

9. A rain and snow-proof fresh air device as described in any one of claims 1 to 8, characterized in that: The air inlet of the fresh air duct is inclined, and the inclination direction of the air inlet is the same as that of the grille.

10. An air conditioning unit, characterized in that: The device is equipped with a rain and snow protection fresh air system as described in any one of claims 1 to 9.

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