Air conditioner fresh air wind and sand prevention device and air conditioning unit

Abstract

The utility model relates to an air conditioner fresh air wind and sand prevention device and an air conditioning unit, the wind and sand prevention device is independently installed at a fresh air opening of an air conditioning unit shell and comprises an air inlet bin and a filter bin which are communicated with each other, a fresh air inlet is formed in an outer shell of the air inlet bin, and the air inlet bin and the filter bin are communicated through a communication opening. A first filtering part is installed in the filtering bin, and an outlet of the filtering bin is connected with a fresh air opening. The utility model can effectively prevent or reduce dust from entering the air conditioning unit and ensure the air quality in a guest room.

Description

Technical Field

[0001] The utility model relates to the field of vehicle air conditioning system technology, in particular to an air conditioner fresh air sand-proof device and an air conditioner unit. Background Art

[0002] In the prior art, for the air conditioner unit installed on a rail vehicle, its sand-proof structure mainly relies on the rain separator arranged at the fresh air inlet and the installed filter screen to prevent the entry of sand particles and rain. The disadvantage is that when operating in areas with large sandstorms, the sand-proof effect is poor, it cannot prevent the entry of fine dust, the filter screen is frequently clogged, and moreover, the unfiltered dust is likely to enter the main air duct after entering the fresh air inlet, and then enter the passenger compartment, affecting the air quality in the passenger compartment. In addition, due to the blockage of the filter screen, the fresh air volume entering the passenger compartment is reduced, which not only affects the air quality in the passenger compartment but also increases the negative pressure in the passenger compartment. Summary of the Utility Model

[0003] The main technical problem to be solved by the utility model is to provide an air conditioner fresh air sand-proof device that can effectively prevent or reduce the entry of dust into the interior of the air conditioner unit and ensure the air quality in the passenger compartment. At the same time, an air conditioner unit equipped with the air conditioner fresh air sand-proof device is provided.

[0004] To solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0005] An air conditioner fresh air sand-proof device is independently installed at the fresh air inlet of the air conditioner unit housing, including an air inlet chamber and a filter chamber that are interconnected. A fresh air inlet is provided on the outer shell of the air inlet chamber. The air inlet chamber and the filter chamber are connected through a communication port. A first filter part is installed in the filter chamber, and the outlet of the filter chamber is connected to the fresh air inlet.

[0006] Further, the first filter part is composed of multiple rows of first diversion baffles arranged in sequence along the fresh air flow path. The open directions of adjacent two rows of first diversion baffles are opposite, and they are staggered in the direction perpendicular to the flow path, forming a curved flow path between the first diversion baffles.

[0007] Further, the first diversion baffle is of a V-shaped structure.

[0008] Further, the air inlet chamber has two fresh air inlets, which are respectively arranged on both sides of the communication port.

[0009] Further, the air inlet chamber has a first section and a second section. The cross-section of the first section converges from the fresh air inlet towards the connection with the second section, and the communication port is arranged on the side of the second section.

[0010] Further, the filtering bin is installed on one side of the air conditioner unit housing, the air inlet bin is installed on the other side of the filtering bin, and the outlet of the filtering bin is located at one end of the filtering bin close to the fresh air inlet, and is communicated with the fresh air inlet through a connecting channel.

[0011] Further, a second filtering part is arranged in the air inlet bin.

[0012] Further, the second filtering part includes a plurality of second diversion baffles intermittently arranged along the fresh air flow route on the side plates on both sides of the air inlet bin. The second diversion baffles on both sides are staggered in the flow route direction and have an overlapping part in the projection on the cross section perpendicular to the fresh air flow route, forming a curved flow route.

[0013] Further, the second diversion baffle is composed of a horizontal section and a bent section, and the bent section is bent from the end of the horizontal section towards the air inlet direction.

[0014] Another basic concept of the technical solution adopted by the present utility model is:

[0015] An air conditioner unit includes a housing, a fresh air inlet is arranged on the housing, and the above-mentioned air conditioner fresh air anti-sand device is installed at the fresh air inlet of the housing.

[0016] In summary, an air conditioner fresh air anti-sand device and an air conditioner unit provided by the present utility model have the following advantages compared with the prior art:

[0017] (1) By independently installing an anti-sand device outside the air conditioner unit, the present utility model effectively separates dust and rainwater before the fresh air enters the interior of the air conditioner unit, enabling the air conditioner unit to still ensure the separation effect of dust and rainwater in a sandy and windy environment, preventing dust and rainwater from entering the interior of the air conditioner unit and then into the passenger compartment along with the fresh air, ensuring the air quality in the passenger compartment, and greatly improving the riding experience of operating vehicles in a sandy and windy environment.

[0018] (2) Through the setting of the air inlet bin and the filtering bin, the present utility model extends the length of the flow route of the fresh air from the fresh air inlet to the fresh air inlet of the air conditioner unit, improves the natural sedimentation ability of the fresh air during the flow process, and further improves the fresh air filtering effect.

[0019] The following further describes in detail the specific implementation manners of the present utility model with reference to the drawings. Description of the Drawings

[0020] The accompanying drawings, as a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] In the accompanying drawings:

[0022] Figure 1 is a schematic structural diagram of the air conditioner unit of the present utility model;

[0023] Figure 2 is a schematic structural diagram of the first filtering part of the present utility model.

[0024] In the figure:

[0025] Air conditioner unit 1, fresh air inlet 2, evaporation chamber 3, condensation chamber 4, air inlet chamber 5, first section 51, second section 52, filtering chamber 6, fresh air inlet 7, communication port 8, first filtering part 9, first diversion baffle 91, connection channel 10, second diversion baffle 11, horizontal section 111, bending section 112, rainwater separator 12, fresh air filter screen 13, partition 14.

[0026] It should be noted that the accompanying drawings and the text description are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Embodiment 1:

[0031] As Figure 1 shown, the present utility model provides an air conditioner fresh air sand and wind protection device, which is independently installed at the fresh air inlet 2 of the housing of the air conditioner unit 1. The fresh air needs to be filtered by the air conditioner fresh air sand and wind protection device before entering the interior of the air conditioner unit 1 through the fresh air inlet 2 and mixing with the return air.

[0032] In this embodiment, the air conditioner fresh air sand and wind protection device includes an air inlet chamber 5 and a filter chamber 6 that are interconnected. A fresh air inlet 7 is provided on the outer shell of the air inlet chamber 5. The air inlet chamber 5 and the filter chamber 6 are connected through a communication port 8. The outlet of the filter chamber 6 is connected to the fresh air inlet 2, and a first filter part 9 is installed in the filter chamber 6. The fresh air enters the air inlet chamber 5 from the fresh air inlet 7, then enters the filter chamber 6 through the communication port 8, and after being filtered by the first filter part 9, enters the interior of the air conditioner unit 1 through the fresh air inlet 2.

[0033] In this way, it can effectively separate dust and rainwater from the fresh air before it enters the interior of the air conditioner unit 1. Through the settings of the air inlet chamber 5, the filter chamber 6, and the communication port 8, all fresh air can be guided to enter the interior of the air conditioner unit 1 after being filtered by the first filter part 9, so that the air conditioner unit can still ensure the separation effect of dust and rainwater in a harsh sandstorm environment, prevent dust and rainwater from entering the interior of the air conditioner unit along with the fresh air and then entering the passenger compartment, ensure the air quality in the passenger compartment, and greatly improve the riding experience of operating vehicles in a harsh sandstorm environment. At the same time, it can also extend the flow path length of the fresh air from the fresh air inlet 7 to the fresh air inlet 2 of the air conditioner unit. On the basis of the filtration of the first filter part 9, it also improves the natural sedimentation ability of the fresh air during the flow process, which is beneficial to further improving the fresh air filtration effect.

[0034] In this embodiment, both the air inlet chamber 5 and the filter chamber 6 are hollow box-shaped structures, which are spliced by metal plates. The longitudinal cross-sectional shape of the air inlet chamber 5 and the filter chamber 6 is preferably square, and of course, other shapes such as circular can also be used. The air inlet chamber 5 and the filter chamber 6 are separated by an intermediate partition 14, and the communication port 8 is opened on the partition 14.

[0035] In this embodiment, for better overall appearance, an outer shell (not shown in the figure) can be further installed outside the air inlet chamber 5 and the filter chamber 6. The air inlet chamber 5 and the filter chamber 6 are placed inside the outer shell, and the wall plates of the air inlet chamber 5 and the filter chamber 6 are fixed inside the outer shell by screws or direct welding. The outer shell is then fixed to the side plate of the air conditioner unit 1 housing by bolts or direct welding.

[0036] In this embodiment, a rain separator 12 and a fresh air filter 13 are provided at the fresh air inlet 7 to preliminarily filter, separate and discharge the fresh air mixed with dust and rain outdoors, ensuring that most of the dust and rain are blocked outside the fresh air inlet 7. Further preferably, both the rain separator 12 and the fresh air filter 13 are installed at the fresh air inlet 7 in a detachable manner for convenient daily cleaning and maintenance. Even more preferably, a frame (not marked in the figure) is provided at the fresh air inlet 7, and the rain separator 12 and the fresh air filter 13 are installed on the frame in a pull-out structure.

[0037] As Figure 1 and Figure 2 shown, in this embodiment, preferably, the first filtering part 9 is composed of multiple rows of first diversion baffles 91 arranged in sequence along the fresh air flow path. The open directions of two adjacent rows of first diversion baffles 91 are opposite, and they are staggered in the direction perpendicular to the flow path (i.e., Figure 2 the horizontal direction in

[0038] ), forming a curved flow path between the first diversion baffles 91. In this embodiment, the first filtering part 9 includes four rows of first diversion baffles 91 arranged front and back.

[0039] Even more preferably, the first diversion baffle 91 adopts a V-shaped structure, and the first diversion baffle 91 can be directly welded to the housing of the filter chamber 6. In this way, when the dust and rain in the fresh air pass through the curved flow path, vortices can be formed between the windward surfaces of the first diversion baffles 91, changing the speed of the dust-containing air flow, which is beneficial to consuming the particle kinetic energy, thus promoting particle sedimentation and filtration, greatly improving the filtration efficiency, and ensuring the cleanliness of the fresh air entering the fresh air inlet 2.

[0040] In this embodiment, preferably, the air inlet chamber 5 has two fresh air inlets 7, and the two fresh air inlets 7 are respectively arranged on both sides of the communication port 8 on the partition plate 14 to ensure the fresh air intake.

[0041] In this embodiment, it is further preferred that the air inlet chamber 5 has a first section 51 and a second section 52. The cross-section of the first section 51 converges from the fresh air inlet 7 towards the connection with the second section 52, and the communication port 8 is arranged on the side of the second section 52. Further, the cross-section of the first section 51 is a right trapezoid, and the outer side plate is an inclined plate. In this way, after the fresh air enters the air inlet chamber 5, due to the reduction of the cross-sectional area of the air inlet chamber 5, the flow rate of the fresh air is increased.

[0042] In this embodiment, it is further preferred that a second filtering part is also arranged in the air inlet chamber 5. The second filtering part includes a plurality of second diversion baffles 11 intermittently arranged along the fresh air flow path on the side plates on the left and right sides of the air inlet chamber 5. The second diversion baffles 11 on both sides are staggered in the flow path direction (i.e., the vertical direction in the figure), and the projections on the cross-section perpendicular to the fresh air flow path have an overlapping part, forming a curved flow path between the second diversion baffles 11. The second diversion baffles 11 can be fixed to the side plates of the air inlet chamber 5 by screws or directly welded to the side plates. In this embodiment, it is preferred that for each fresh air inlet 7, three second diversion baffles 11 are arranged in the corresponding air inlet chamber 5, that is, a total of six second diversion baffles 11 are arranged in the air inlet chamber 5.

[0043] By arranging a plurality of second diversion baffles 11 on the fresh air flow path of the air inlet chamber 5, the dust and rainwater in the fresh air can also form vortices between the second diversion baffles 11 when passing through the curved flow path, changing the speed of the dust-containing air flow, which is beneficial to consuming the particle kinetic energy so as to promote particle sedimentation and filtration, and further improving the filtration efficiency of the fresh air.

[0044] In this embodiment, it is further preferred that the second diversion baffle 11 is composed of a horizontal section 111 and a bent section 112. The bent section 112 is bent from the end of the horizontal section 111 towards the air inlet direction, where the horizontal direction is the direction perpendicular to the fresh air flow path. In this way, after the fresh air enters the air inlet chamber 5, under the action of the bent section 112 of the second diversion baffle 11, a turbulent flow is further formed in the air inlet chamber 5, so that the separation effect of the dust and rainwater mixed in the fresh air by natural sedimentation is further improved.

[0045] A collection container and a sand discharge port can also be arranged at the bottom of the air inlet chamber 5 to collect and discharge the dust and rainwater separated by natural sedimentation in the air inlet chamber 5.

[0046] In this embodiment, the filtering chamber 6 is installed on one side of the housing of the air conditioner unit 1, the air inlet chamber 5 is arranged on one side of the filtering chamber 6, the outlet of the filtering chamber 6 is located at one end of the filtering chamber 6 close to the fresh air inlet 2, and the outlet of the filtering chamber 6 is communicated with the fresh air inlet 2 on the air conditioner unit 1 through a connection channel 10. In this way, the structure of the entire air conditioner unit 1 can be made more compact without occupying too much space.

[0047] As Figure 1 shown, the arrow direction in the figure is the flow route of fresh air. For the fresh air anti-wind and sand device of this air conditioner, outdoor fresh air first enters the air inlet chamber 5 through two fresh air inlets 7. When passing through the two fresh air inlets 7, it is preliminarily filtered by the rain separator 12 and the fresh air filter screen 13 installed at the fresh air inlets 7. At this time, a large amount of sand and rainwater are blocked outside the fresh air inlets 7, and a small amount of sand and rainwater entering the air inlet chamber 5 flow along with the fresh air towards the middle communication port 8. During the flowing process, under the action of multiple second diversion baffles 11 in the second filtering part, the sand and rainwater further settle, realizing the second-stage filtering. The fresh air containing a small amount of sand and rainwater then enters the filtering chamber 6 through the communication port 8. The fresh air is filtered by the first filtering part 9 in the filtering chamber 6, further filtering and separating the sand and rainwater entering together with the fresh air, realizing the third-stage filtering. Finally, the fresh air passing through the three-stage filtering enters the interior of the air conditioner unit 1 through the connection channel 10 and the fresh air outlet 2.

[0048] The fresh air anti-wind and sand device provided by the present utility model has the following advantages:

[0049] (1) By independently installing the anti-wind and sand device outside the air conditioner unit, the device enables effective separation of sand and rainwater before the fresh air enters the interior of the air conditioner unit, ensuring the separation effect of sand and rainwater even in a harsh environment with wind and sand. It effectively prevents sand and rainwater from entering the interior of the air conditioner unit along with the fresh air and then entering the passenger compartment, guaranteeing the air quality in the passenger compartment and greatly improving the riding experience of operating vehicles in a harsh environment with wind and sand.

[0050] (2) Through the settings of the air inlet chamber 5 and the filtering chamber 6, the device extends the flow route length of the fresh air from the fresh air inlet 7 to the fresh air outlet 2 of the air conditioner unit, enhancing the natural settlement effect of the fresh air during the flowing process and further improving the fresh air filtering effect.

[0051] (3) By installing the first filtering part in the filtering chamber 6, setting the second filtering part in the air inlet chamber 5, and installing the rain separator 12 and the fresh air filter screen 13 at the fresh air inlets 7, the device conducts three-stage filtering on the fresh air before it enters the interior of the air conditioner unit 1, ensuring the filtering effect of sand and rainwater in the fresh air.

[0052] (4) This device is particularly suitable for the air conditioner units of rail vehicles operating in a relatively harsh environment with wind and sand, which can ensure the riding comfort.

[0053] Embodiment 2:

[0054] In this embodiment, an air-conditioning unit is provided, which includes a housing. Inside the housing, an evaporation chamber 3 and a condensation chamber 4 are separated by a partition. An evaporator, an evaporation fan, etc. are installed in the evaporation chamber 3, and a compressor, a condenser, a condensation fan, etc. are installed in the condensation chamber 4. A fresh air inlet 2 is provided on the housing of the evaporation chamber 3. An air-conditioning fresh air sand-proof device as described in the first embodiment is installed at the fresh air inlet 2 of the housing. The filtered fresh air enters the evaporation chamber 3 of the air-conditioning unit 1 through the fresh air inlet 2, mixes with the return air entering from the return air inlet, then flows through the evaporator, exchanges heat with the refrigerant in the evaporator, and finally the heated air is sent to the passenger compartment through the air supply outlet to adjust the temperature and humidity of the environment in the passenger compartment.

[0055] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above to form equivalent embodiments of equivalent changes. The implementation schemes in the above embodiments can be further combined or replaced. However, as long as the content does not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention.

Claims

1. An air conditioning fresh air sand protection device, characterized in that: It is independently installed at the fresh air outlet of the air-conditioning unit shell, including an air inlet compartment and a filter compartment that are connected to each other. A fresh air inlet is arranged on the outer shell of the air inlet compartment. The air inlet compartment and the filter compartment are connected through a connecting port. A first filter part is installed in the filter compartment, and the outlet of the filter compartment is connected to the fresh air outlet.

2. The air conditioning fresh air sand-proof device according to claim 1, characterized in that: The first filter section is composed of multiple rows of first guide baffles arranged in sequence along the fresh air flow path. The opening directions of the first guide baffles in two adjacent rows are opposite and are staggered in a direction perpendicular to the flow path, forming a curved flow route between the first guide baffles.

3. The air conditioning fresh air sand-proof device according to claim 2, characterized in that: The first guide baffle is a V-shaped structure.

4. The air conditioning fresh air sand-proof device according to claim 1, characterized in that: The air inlet bin has two fresh air inlets, which are arranged on both sides of the connecting port.

5. The air conditioning fresh air sand-proof device according to claim 1, characterized in that: The air inlet bin has a first section and a second section. The cross section of the first section converges from the fresh air inlet to the connection with the second section. The connecting port is arranged on the side of the second section.

6. The air conditioning fresh air sand-proof device according to claim 1, characterized in that: The filter bin is installed on one side of the air conditioning unit shell, and the air inlet bin is installed on the other side of the filter bin. The outlet of the filter bin is located at one end of the filter bin close to the fresh air outlet and is connected to the fresh air outlet through a connecting channel.

7. The air conditioning fresh air sand protection device according to any one of claims 1 to 6, characterized in that: A second filter portion is arranged in the air inlet bin.

8. The air conditioning fresh air sand-proof device according to claim 7, characterized in that: The second filter part includes a plurality of second guide baffles intermittently arranged along the fresh air flow path on the side plates on both sides of the air inlet bin. The second guide baffles on both sides are staggered in the direction of the flow path and have overlapping projections on the cross section perpendicular to the fresh air flow path, forming a curved flow path.

9. The air conditioning fresh air sand-proof device according to claim 8, characterized in that: The second air guide baffle is composed of a horizontal section and a bent section, and the bent section is formed by bending the end of the horizontal section toward the air inlet direction.

10. An air conditioning unit, comprising a housing, on which a fresh air inlet is arranged, characterized in that: An air conditioning fresh air sand protection device as described in any one of claims 1 to 9 is installed at the fresh air inlet of the shell.

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