Air conditioner filtering device and railway vehicle air conditioning unit

Abstract

The utility model relates to an air conditioner filtering device and a railway vehicle air conditioning unit, the air conditioner filtering device comprises an installation frame and at least two filtering layers, the installation frame is composed of a first frame and a second frame which are connected through a hinge, and the first frame and the second frame are fixedly connected through at least one fixing buckle. The filter layers are embedded between the first frame and the second frame, at least one filter layer is a magnetic filter screen layer, and the multiple filter layers are arranged in parallel along an air flowing path. According to the utility model, various particulate matters in the compartment can be effectively filtered, the filtering effect is improved, and the environmental cleanliness of the compartment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of air conditioning equipment technology, especially to air conditioner filter device and railway vehicle air conditioning unit. BACKGROUND

[0002] The highest mass fraction of metal elements in subway system particulate matter is Fe, and the Fe element in subway particulate matter samples is derived from mechanical friction such as friction between a rail-wheel-brake system interface, a contact cable and a contact rail interface during subway operation. The surface of the metal particulate matter generated by mechanical friction is active and easy to react with oxygen in the air to form an oxide. The existence form of Fe in subway particulate matter includes Fe3O4 and Fe2O3, and the main form is Fe3O4, which is also called magnetic iron oxide. The total number of metal particulate matter generated by mechanical friction accounts for 61% to 79%.

[0003] In order to purify the cleanliness of indoor air of the subway vehicle, an air filter screen is generally installed at the return air inlet or the air supply inlet of the air conditioning unit. The air filter screen of the conventional air conditioning unit of the subway and other railway vehicles generally uses a stainless steel screen or a non-woven fabric filter cotton material to filter particulate matter in the carriage and the external environment, but the filter screen made of the conventional stainless steel screen or non-woven fabric filter cotton material has a general filtering effect on iron-containing particulate matter and cannot meet the higher requirements of people on the environment of the subway vehicle. SUMMARY

[0004] The utility model mainly solves the technical problem that a kind of air conditioner filter device can effectively filter various particulate matter in carriage, improve filtering effect, and improve the air conditioning filter device of clean degree of carriage environment, and also provide a kind of railway vehicle air conditioning unit installed with the air conditioning filter device.

[0005] To solve the above technical problems, the basic idea of the technical scheme of the utility model is as follows:

[0006] An air conditioner filter device includes a mounting frame and at least two layers of filter layers, the mounting frame is composed of a first frame and a second frame connected by a hinge, the first frame and the second frame are fixedly connected by at least one fixing buckle, and the filter layers are embedded and mounted between the first frame and the second frame, wherein at least one layer of filter layers is a magnetic filter screen layer, and multiple layers of filter layers are arranged in parallel along the air flow path.

[0007] Further, the filter layers include two layers, which are a magnetic filter screen layer and a filter cotton layer, respectively, and the magnetic filter screen layer is installed on the air inlet side of the filter cotton layer.

[0008] Further, the first frame includes a first border, and the magnetic filter screen layer is embedded and mounted in the middle of the first border.

[0009] Further, a pressing plate is installed on at least three sides of the first frame, which presses and fixes the edges of the magnetic filter screen layer on the first frame, and the pressing plate is fixedly connected with the first frame through a plurality of rivets.

[0010] Further, the second frame is composed of a second frame and a middle grid, and the filter layer is clamped and fixedly installed between the first frame and the second frame.

[0011] Further, the fixing buckle comprises a U-shaped elastic clamping plate, one side plate of the elastic clamping plate outwardly extends a connecting plate which is rotatably connected to the outer side of the first frame or the second frame, and the other side plate of the elastic clamping plate has an outwardly turned flange at the end thereof, and after the first frame and the second frame are buckled, the elastic clamping plate is clamped in the clamping groove surrounded by the two side plates of the elastic clamping plate.

[0012] Further, a spring sheet outwardly protruding is installed on the outer side of the frame of the first frame or the second frame.

[0013] Further, the magnetic filter screen layer is a stainless steel screen or an aluminum alloy screen with a magnet adsorption function.

[0014] Another technical scheme adopted by the utility model is:

[0015] An air conditioning filter device and a rail vehicle air conditioning unit are provided.

[0016] Compared with the prior art, the air conditioning filter device and the rail vehicle air conditioning unit have the following advantages:

[0017] (1) The filter device can effectively filter iron-containing particles in air due to the magnetic filter screen layer, and the filtering effect of iron-containing particles in air is greatly improved compared with traditional filter devices, and the cleanliness of the environment in the carriages of subways and other rail vehicles is greatly improved.

[0018] (2) The overall structure of the installation frame is simple and easy to operate, the middle filter layer is convenient to replace, and the installation frame is convenient to cooperate with the structural members in the air conditioning unit to realize the disassembly and assembly of the filter device.

[0019] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application but do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0021] In the drawings:

[0022] Figure 1 is a structural diagram of the air conditioner filter device of the present application;

[0023] Figure 2 is a lateral structural diagram of the air conditioner filter device of the present application;

[0024] Figure 3 is a structural diagram when the air conditioner filter device of the present application is in a half-open state;

[0025] Figure 4 is a structural diagram of the air conditioner filter device of the present application after installation.

[0026] In the drawings:

[0027] Mounting frame 1, first frame 11, first side frame 111, second frame 12, second side frame 121, grid 122, filter layer 2, magnetic filter screen layer 21, filter cotton layer 22, hinge 3, fixed buckle 4, elastic clamping plate 41, clamping groove 42, connecting plate 43, folded edge 44, pressing plate 5, rivet 6, spring sheet 7, handle 8, evaporator 9, evaporator side plate 10, insertion groove 101.

[0028] It should be noted that the drawings and the written description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be clearly and completely described below with reference to the drawings of the embodiments of the present application. The following embodiments are used to illustrate the present application but not to limit the scope of the present application.

[0030] In the description of the utility model, it needs to explain, the term "upper", "lower", "front", "back", "left", "right", "vertical", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore can not be understood as the limitation of the utility model.

[0031] In the description of the utility model, it needs to explain, unless otherwise explicitly provided and limited, the term "installation", "connection", "connect" should be broad sense, for example, can be fixed connection, can be detachable connection, or integrally connected, can be mechanical connection, can be electrical connection, can be directly connected, can be indirectly connected through intermediate medium.

[0032] As Figures 1 to 3 Indicated, the utility model provides a kind of air conditioner filter device, for being installed in the inside of air conditioning unit, can be installed at the return air inlet, fresh air inlet of air conditioning unit according to need, can also be installed on the return air path of air conditioning unit, such as being installed in the air inlet side of evaporator, and evaporator is installed side by side, the return air and fresh air in room are mixed under the action of air supply fan, first pass through the filter device filtering again flow through evaporator, heat exchange with the refrigerant in evaporator, then be sent to room.

[0033] The utility model provides air conditioner filter device, including installation frame 1 and filter layer 2, installation frame 1 is installed in the inside of air conditioning unit in detachable mode. Wherein, installation frame 1 includes first frame 11 and second frame 12, first frame 11 and second frame 12 are rotatably connected by hinge 3 between them, wherein hinge 3 is preferably provided with two, first frame 11 and second frame 12 are fixedly connected by at least one fixed buckle 4, and fixed buckle 4 is preferably provided with two. Filter layer 2 is embedded and installed between first frame 11 and second frame 12, first frame 11 and second frame 12 are fixedly connected together after buckling through two fixed buckles 4, i.e. filter layer 2 can be installed between first frame 11 and second frame 12. The structure of the installation frame 1 is simple and easy to operate as a whole, and the intermediate filter layer 2 is convenient to replace, and the installation frame 1 is also convenient to install and cooperate with the structural member inside air conditioning unit to realize the disassembly and assembly of the filter device as a whole.

[0034] In the embodiment, the filter layer 2 includes at least two layers, and at least one of the layers is a magnetic filter screen layer 21 for adsorbing iron-containing particles in the air. The multiple filter layers 2 are arranged in parallel along the air flow path. Further preferably, the filter layer 2 is provided with only two layers, i.e. the magnetic filter screen layer 21 and a filter cotton layer 22, and the magnetic filter screen layer 21 is installed on the air inlet side of the filter cotton layer 22. The filter cotton layer 22 is preferably made of non-woven fabric for filtering the remaining dust and the like in the air that does not contain iron elements. The air is filtered by the magnetic filter screen layer 21 first and then by the filter cotton layer 22.

[0035] In this way, the magnetic filter screen layer 21 is provided, so that the filter device can effectively filter the iron-containing particles in the air. Compared with the conventional filter device, the filtering effect of the iron-containing particles in the air is greatly improved, and the cleanliness of the environment in the car of the subway and the like is greatly improved. Moreover, the filter device is provided with multiple filter layers, which can filter all the iron-containing and non-iron-containing particles in the air, so that the air purification effect in the car is reliably ensured.

[0036] In the embodiment, the magnetic filter screen layer 21 is preferably made of a stainless steel mesh or an aluminum alloy mesh with a magnet adsorption function. The stainless steel mesh or the aluminum alloy mesh can be made of a punched sheet metal structure or a woven structure of stainless steel wires or aluminum alloy wires. The structure can ensure the overall structural strength of the magnetic filter screen layer 21, and does not need to be additionally provided with a supporting structure, which is beneficial to simplify the structure of the filter device, reduce the cost, and also beneficial to reduce the weight of the filter device.

[0037] In the embodiment, the magnetic filter screen layer 21 is fixedly installed on the first frame 11, and the first frame 11 is preferably made of a stainless steel frame or an aluminum alloy frame. Since the magnetic filter screen layer 21 is made of a stainless steel mesh or an aluminum alloy mesh with a certain structural strength, the first frame 11 only includes a first frame 111, and the magnetic filter screen layer 21 is embedded and installed in the middle of the first frame 111. Of course, a grid structure can be additionally installed in the middle of the first frame 11 to further enhance the overall structural strength of the filter device, but the size of the grid should be larger than that of the magnetic filter screen layer 21 to ensure the filtering effect and avoid increasing the air resistance.

[0038] In the embodiment, it is further preferred that the pressing plate 5 is installed on at least three sides of the first frame 111, i.e. on the three sides without the hinge 3, and the pressing plate 5 tightly fixes the edges of the magnetic filter screen layer 21 on the first frame 111. In order to facilitate installation, an installation edge (not shown in the figure) is outwardly extended at the edges of the opposite three sides of the magnetic filter screen layer 21, and the pressing plate 5 is fixedly connected with the first frame 111 through a plurality of rivets 6, and the installation edge of the edge of the magnetic filter screen layer 21 is fixed between the pressing plate 5 and the first frame 111. The pressing plate 5 can be a long strip-shaped stainless steel plate or an aluminum alloy plate. In this way, the fixing between the magnetic filter screen layer 21 and the first frame 11 is more firm and reliable, and the disassembly and assembly are also very convenient. When the magnetic filter screen layer 21 needs to be replaced, the pressing plate 5 and the rivets 6 only need to be disassembled from the first frame 111, so that the maintenance personnel can replace the magnetic filter screen layer 21.

[0039] In the embodiment, in order to install the filter cotton layer 22, it is preferred that the second frame 12 is composed of a second frame 121 and a middle grid 122, and the end of the grid 122 is welded on the second frame 121, and the end of the grid 122 can also be fixed on the second frame 121 through screws. The second frame 12 is also preferably a whole stainless steel frame or an aluminum alloy frame. The filter cotton layer 22 is clamped and fixedly installed between the first frame 11 and the second frame 12, specifically, the filter cotton layer 22 is clamped and installed between the magnetic filter screen layer 21 on the first frame 11 and the grid 122. The second frame 12 adopts the structure with the middle grid, which can better support and protect the filter cotton layer 22. The grid should be as large as possible in size on the premise of ensuring the structural strength, so as to ensure that the air can smoothly pass through and avoid wind resistance.

[0040] In the embodiment, it is further preferred that the fixing buckle 4 comprises a U-shaped elastic clamping plate 41, the two side plates of the elastic clamping plate 41 surround a clamping groove 42, one side plate of the elastic clamping plate 41 outwardly extends a connecting plate 43, the connecting plate 43 is rotatably connected to the outer side of the second frame 12, so that the fixing buckle 4 is switched between the clamping position and the non-clamping position, and of course the connecting plate 43 is also installed on the first frame 11. The other side plate of the elastic clamping plate 41 has an outwardly turned folding edge 44 at the end thereof, and the folding edge 44 is arranged to facilitate the maintenance personnel to move the fixing buckle 4 to rotate to one side. The width of the clamping groove 42 is equal to or slightly smaller than the total thickness of the first frame 11 and the second frame 12 after being buckled. After the filter layer 2 is replaced, the first frame 11 and the second frame 12 are buckled, the fixing buckle 4 is rotated, and the first frame 11 and the second frame 12 are clamped into the clamping groove 42 by the elasticity of the elastic clamping plate 41. When it needs to be replaced, the fixing buckle 4 is moved to rotate to one side, so that the first frame 11 and the second frame 12 are rotated and separated around the hinge 3, i.e. the magnetic filter screen layer 21 and the filter cotton layer 22 therein can be replaced.

[0041] In the embodiment, further preferably, spring sheets 7 are outwardly protruding on the outer side of the first frame 11, and more preferably, two spring sheets 7 are provided, one on each side of the first frame 11.

[0042] In the embodiment, further preferably, a downwardly recessed accommodating cavity (not shown in the figure) is provided on the outer side of the first frame 11, and the spring sheet 7 is arc-shaped, with both ends of the spring sheet 7 being fixed on the bottom of the accommodating cavity by screws, and the spring sheet 7 partially protruding on the outside of the accommodating cavity. The spring sheet 7 is used to cooperate with the structural member on which the filter device is installed in the air conditioning unit, and the filter device is firmly fixed on the structural member by the elasticity of the spring sheet 7, so as to avoid the filter device from shaking or even falling off the structural member during the operation of the vehicle. Of course, the spring sheet 7 can also be directly fixed on the outer side of the first frame 11 by screws.

[0043] As shown in Figure 4 , each of the two evaporator side plates 10 of the evaporator 9 is provided with a slot 101 formed by outwardly bending, and the two sides of the mounting frame 1 are respectively inserted into the two slots 101, and the spring sheet 7 is elastically clamped on the side wall of the slot 101, so as to firmly fix the filter device in the slot 101. Of course, the spring sheet 7 can also be installed on the outer side of the second frame 12, or spring sheets 7 are installed on the outer sides of the first frame 11 and the second frame 12.

[0044] In the embodiment, a handle 8 is further installed on the second frame 12, so as to facilitate the taking and placing of the filter device. Of course, the handle 9 can also be installed on the first frame 11.

[0045] As shown in Figure 4 , the utility model also simultaneously provides a rail vehicle air conditioning unit, and the air conditioning unit comprises a shell, an evaporating cavity and a condensing cavity are separated in the shell by a partition plate, an evaporator 9 and a blower (not shown in the figure) are installed in the evaporating cavity, an air return inlet and a fresh air inlet are arranged on the shell of the evaporating cavity, indoor return air enters the evaporating cavity through the air return inlet, outdoor fresh air enters the evaporating cavity through the fresh air inlet, the return air and the fresh air are mixed in the evaporating cavity, and then pass through the evaporator 9 to exchange heat with the refrigerant in the evaporator 9, and finally are sent into the vehicle compartment, and the above-mentioned air conditioning filter device is installed on the air inlet side of the evaporator 9. When two evaporators are installed in the air conditioning unit, the above-mentioned air conditioning filter device is installed on the air inlet side of each evaporator 9.

[0046] The two ends of the evaporator 9 are fixed on the shell of the air conditioning unit through an evaporator side plate 10 respectively, the evaporator side plate 10 is vertically installed in the shell through screws, and the two evaporator side plates 10 are respectively provided with a slot 101 formed by outwardly bending. Specifically, the side edge of the evaporator side plate 10 located at the air inlet side of the evaporator 9 extends outwardly and is sequentially bent outwardly and inwardly. The slots 101 on the two sides are symmetrically arranged, the two side edges of the mounting frame 1 of the filter device are respectively inserted into the two slots 101, and are clamped in the slots 101 through the spring sheets 7, so that the filter device is fixed.

[0047] After the above scheme is adopted, the following beneficial effects are achieved:

[0048] 1. The filter device can effectively filter the iron-containing particles in the air through the setting of the magnetic filter screen layer, greatly improves the filtering effect of the iron-containing particles in the air compared with the traditional filter device, and greatly improves the cleanliness of the environment in the carriages of the subway and other rail vehicles. Moreover, the filter device can filter all iron-containing and non-iron-containing particles in the air through the setting of the multiple filter layers, so that the air purification effect in the carriage is reliably guaranteed.

[0049] 2. The overall structure of the mounting frame in the filter device is simple and easy to operate, which facilitates the replacement of the intermediate filter layer and the cooperation of the mounting frame with the structural members inside the air conditioning unit to realize the disassembly and assembly of the filter device as a whole.

[0050] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with reference to the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and equivalent embodiments with equivalent changes can be obtained. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the scope of the present application.

Claims

1. An air conditioner filter device, characterized by: The air conditioner filter device comprises a mounting frame and at least two filter layers, the mounting frame is composed of a first frame and a second frame connected by a hinge, the first frame and the second frame are fixedly connected by at least one fixing buckle, and the filter layers are embeddedly mounted between the first frame and the second frame, wherein at least one of the filter layers is a magnetic filter screen layer, and the multiple filter layers are arranged in parallel along an air flow path.

2. The air conditioner filter device of claim 1, wherein: The filter layers comprise two layers, i.e. a magnetic filter screen layer and a filter cotton layer, and the magnetic filter screen layer is mounted on the air inlet side of the filter cotton layer.

3. The air conditioner filter arrangement of claim 2, wherein: The first frame comprises a first frame, and the magnetic filter screen layer is embeddedly mounted in the middle of the first frame.

4. The air conditioner filter arrangement of claim 3, wherein: Pressing plates are mounted on at least three sides of the first frame, the pressing plates press and fix the edges of the magnetic filter screen layer on the first frame, and the pressing plates are fixedly connected with the first frame by multiple rivets.

5. The air conditioner filter arrangement of claim 2, wherein: The second frame is composed of a second frame and a grid in the middle, and the filter cotton layer is clampedly and fixedly mounted between the first frame and the second frame.

6. The air conditioner filter arrangement of claim 1, wherein: The fixing buckle comprises a U-shaped elastic clamping plate, one side plate of the elastic clamping plate outwardly extends a connecting plate, the connecting plate is rotatably connected to the outer side of the first frame or the second frame, the other end of the other side plate of the elastic clamping plate has an outwardly turned flange, and after the first frame and the second frame are buckled, the elastic clamping plate is clamped into a clamping groove surrounded by the two side plates of the elastic clamping plate.

7. The air conditioner filter arrangement of claim 1, wherein: Spring sheets outwardly protruding from the outer side of the frame are mounted on the first frame or the second frame.

8. The air conditioner filter arrangement of any one of claims 1-7, wherein: The magnetic filter screen layer is a stainless steel screen or an aluminum alloy screen with magnetic adsorption function.

9. A rail vehicle air conditioning unit, characterized by: An air conditioner filter device as claimed in any one of claims 1-8 is mounted in an air conditioner unit.

10. The rail vehicle air conditioning pack of claim 9, wherein: An evaporator is mounted in the air conditioner unit, two ends of the evaporator are fixed to a shell by evaporator side plates, the two evaporator side plates are respectively provided with outwardly bent insertion grooves, and two side edges of the air conditioner filter device are respectively inserted into the two insertion grooves to be fixed.

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