CN218084999U - Air door assembly and vehicle-mounted air conditioning system - Google Patents

Abstract

The utility model relates to an on-vehicle air conditioning technology field specifically provides an air door subassembly and on-vehicle air conditioning system, aims at solving the problem that the air purification function of current on-vehicle air conditioning system used inconveniently, economic nature is poor. Mesh for this reason, the utility model discloses an air door subassembly includes: the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with an air duct, and an internal circulation air inlet, an external circulation air inlet and an air outlet are also arranged on the shell and are communicated with the air duct; the air door is arranged in the air duct and used for closing the internal circulation air inlet or the external circulation air inlet; the photocatalyst element is arranged on the air door; and the lighting unit is arranged in the air duct and is used for irradiating and activating the photocatalyst element so as to purify the air flow in the air duct by the photocatalyst element. The utility model discloses an air door subassembly is through setting up photocatalyst element and lighting unit in the wind channel, need not regularly change, can compromise convenience and economic nature.

Description

Air door assembly and vehicle-mounted air conditioning system

Technical Field

The utility model relates to an on-vehicle air conditioning technology field specifically provides an air door subassembly and on-vehicle air conditioning system.

Background

The air pollution is increasingly severe, people have stronger and stronger demands on healthy air, and good air quality is increasingly urgent. Because the space in the automobile is narrow and closed, and parts are numerous, peculiar smell is easily generated in the automobile. Especially, the odor problem caused by the evaporator is particularly prominent.

To above-mentioned problem, current car adds the air purification function in on-vehicle air conditioning system, mainly realizes through adding modes such as establishing the high-efficient filter screen that has antibacterial coating or anion generator in the wind channel, however the mode of high-efficient filter screen needs often to carry out the change of filter screen and leads to using very inconveniently, and anion generator structure is complicated, can lead to the cost to increase by a wide margin.

Therefore, how to purify the air in the vehicle while taking convenience and economy into consideration is a problem to be solved urgently in the field.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving above-mentioned technical problem, promptly, solve current vehicle air conditioning system's air purification function and use inconvenient, the poor problem of economic nature.

Mesh for this reason, the utility model provides an air door subassembly, this air door subassembly includes: the air conditioner comprises a shell, a fan and a control device, wherein the shell is provided with an air duct, the shell is also provided with an internal circulation air inlet, an external circulation air inlet and an air outlet, and the internal circulation air inlet, the external circulation air inlet and the air outlet are all communicated with the air duct; the air door is arranged in the air duct and used for closing the internal circulation air inlet or the external circulation air inlet; the photocatalyst element is arranged on the air door; the lighting unit is arranged in the air duct and used for irradiating and activating the photocatalyst element so as to purify the air flow in the air duct.

Furthermore, the air door is rotatably arranged in the air duct, and the air door is switched between a first position for closing the internal circulation air inlet and a second position for closing the external circulation air inlet through rotation; the lighting unit is arranged on the air door, so that in the rotating process of the air door, the distance between the lighting unit and the photocatalyst element is unchanged.

Further, the damper includes: the connecting seat is rotatably connected to the shell, and the lighting unit is arranged on the connecting seat; the baffle is connected to the connecting seat and can be rotatably arranged in the air duct through the connecting seat; in the first position of the air door, the baffle covers the inner circulation air inlet; and at the second position of the air door, the baffle covers the external circulation air inlet, and the photocatalyst element is arranged on the baffle.

Further, the baffle has a first side and a second side which are oppositely arranged; the first side face is used for covering the inner circulation air inlet or the outer circulation air inlet; the second side faces the rotation axis of the air door, the photocatalyst element is arranged on the second side, and the irradiation direction of the lighting unit faces the second side of the baffle.

Further, the baffle is an arc-shaped plate, the second side face is the inner surface of the arc-shaped plate, and the lighting unit is located at the position of the symmetry axis of the arc-shaped plate.

Furthermore, the internal circulation air inlet and the air outlet are arranged oppositely, and the external circulation air inlet and the air outlet are arranged adjacently; and an outer circulation airflow circulation area is formed between the outer circulation air inlet and the air outlet at the first position of the air door, and the baffle is positioned outside the outer circulation airflow circulation area.

Furthermore, a rotating shaft is arranged on the connecting seat, the rotating shaft penetrates through the shell, and the connecting seat is pivotally connected to the shell through the rotating shaft; the rotating shaft is a hollow shaft, a wiring hole communicated with the hollow shaft is formed in the connecting seat, and a power line of the lighting unit extends to the outside of the shell through the wiring hole and the hollow shaft.

Further, the lighting unit includes: the bracket is arranged on the connecting seat; the LED lamp is arranged on the support, and the wiring position of the LED lamp is arranged in a sealing mode.

Further, the photocatalyst element includes: the nickel screen covers the air door, and titanium dioxide is coated on the nickel screen.

According to the utility model discloses a still provide an on-vehicle air conditioning system, this on-vehicle air conditioning system includes foretell air door subassembly.

Under the condition that adopts above-mentioned technical scheme, the utility model discloses an air door subassembly is through setting up photocatalyst element and lighting unit in the wind channel, when using, can shine photocatalyst element through lighting unit, and photocatalyst element receives illumination and arouses the back to purify the air. Compared with the high-efficiency filter screen and the anion generator with the antibacterial coating in the prior art, the photocatalyst element can not be consumed, so that the photocatalyst element does not need to be replaced regularly, is more convenient to use, and can save the use cost. Moreover, the photocatalyst element and the lighting unit have simpler structures and lower manufacturing cost, and can take convenience and economy into consideration.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of a damper assembly according to an embodiment of the present invention;

fig. 2 is a schematic view of the damper assembly of an embodiment of the present invention in a single position;

fig. 3 is a schematic view of the damper assembly of the present invention with the damper in two positions;

fig. 4 is a schematic structural view of a damper assembly according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an illumination unit of a damper assembly according to an embodiment of the present invention;

FIG. 6 is a partial enlarged view of the shaft portion of the damper assembly of an embodiment of the present invention;

list of reference numerals:

10. a housing; 11. an air duct; 12. an internal circulation air inlet; 13. an external circulation air inlet; 14. an air outlet; 15. an outer circulation gas flow circulation area; 20. a damper; 21. a connecting seat; 211. a rotating shaft; 212. a wiring hole; 22. a baffle plate; 221. a first side surface; 30. a photocatalyst element; 40. a lighting unit; 41. a support; 42. an LED lamp; 43. a screw; 44. a power line; 45. a wire harness; 46. and (7) a plug connector.

Detailed Description

The present invention will be further described with reference to the following examples, but the scope of the present invention is not limited to the content of the description.

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. For example: in the present embodiment, the air door assembly used in the air conditioner on board the vehicle is described as an example, but this is not restrictive, and based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts, such as: be used in the air door subassembly in this scheme of on-vehicle air conditioner on train, subway adoption, all should belong to the utility model discloses the scope of protection.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention herein.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted", "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

The air purification function is added to current car in on-vehicle air conditioning system, mainly through adding the mode realization such as establishing high-efficient filter screen or anion generator that have antibacterial coating in the wind channel, however, the high-efficient filter screen that has antibacterial coating, the filter screen is after using a period on the one hand, need clean, the effect can reduce gradually along with time lapse of on the other hand antibacterial coating, need periodic replacement, consequently, the high-efficient filter screen that has antibacterial coating is inconvenient at the use, and use cost is higher. The negative ion generator is relatively complex in structure and can increase the cost of the vehicle-mounted air conditioning system. Therefore, a solution is needed that can effectively purify the air in the vehicle and simultaneously achieve both convenience and economy.

For this purpose, the present invention provides a damper assembly including a housing 10, a damper 20, a photocatalyst element 30, and a lighting unit 40.

As shown in fig. 1, an inner circulation air inlet 12, an outer circulation air inlet 13 and an air outlet 14 are arranged on a housing 10, an air duct 11 is arranged inside the housing 10, and the inner circulation air inlet 12, the outer circulation air inlet 13 and the air outlet 14 are all communicated with the air duct 11, wherein the inner circulation air inlet 12 is communicated with an air return opening (not shown) of an automobile cab, the outer circulation air inlet 13 is communicated with the outside, the air outlet 14 is communicated with a heat exchange air duct (not shown) of a vehicle-mounted air conditioner, and the heat exchange air duct is communicated with an air conditioner air outlet (not shown) of the automobile cab.

As shown in fig. 1, the damper 20 is disposed in the air duct 11 of the housing 10, and both ends of the damper 20 are pivotally connected to the inner wall of the housing 10 by a rotating shaft 211, so that the damper 20 can rotate in the air duct 11. As shown in fig. 2 and 3, the damper 20 has a first position and a second position, and the damper 20 is switched between the first position and the second position by rotation. As shown in fig. 2, at the first position of the air door 20, the air door 20 shields the position of the internal circulation air inlet 12 and simultaneously shields the external circulation air inlet 13, so as to close the internal circulation air inlet 12, at this time, the vehicle-mounted air conditioner is in an external circulation mode, air outside the cab enters the air duct 11 through the external circulation air inlet 13 and then is sent into a heat exchange air duct (not shown in the figure) through the air outlet 14, and exchanges heat with a heat exchanger in the heat exchange air duct to form cold air or hot air, and the cold air or hot air enters the cab of the automobile through the air outlet (not shown in the figure) of the air conditioner to form external circulation; as shown in fig. 3, at the second position of the air door 20, the air door 20 is shielded at the position of the external circulation air inlet 13 and simultaneously avoids the internal circulation air inlet 12, so as to close the external circulation air inlet 13, at this time, the vehicle-mounted air conditioner belongs to an internal circulation mode, indoor return air enters the air duct 11 through the internal circulation air inlet 12 and then is sent into the heat exchange air duct through the air outlet 14, and exchanges heat with the heat exchanger to form cold air or hot air, and the air or the hot air is sent into the cab of the vehicle again through the air outlet of the air conditioner to form internal circulation.

As shown in fig. 1 and 4, the photocatalyst element 30 and the illumination unit 40 are both disposed in the air duct 11, and the photocatalyst element 30 is disposed on the damper 20; the lighting unit 40 is also disposed on the damper 20, the photocatalyst element 30 is disposed opposite to the lighting unit 40, so that light emitted from the lighting unit 40 can irradiate on the photocatalyst element 30, and the lighting unit 40 activates the photocatalyst element 30 through irradiation, so that the photocatalyst element 30 purifies the air flow in the air duct 11. The utility model discloses an air door subassembly is through setting up photocatalyst element 30 and lighting unit 40 in wind channel 11, when using, can shine photocatalyst element 30 through lighting unit 40, and photocatalyst element 30 receives illumination excitation back to purify the air. Compared with the high-efficiency filter screen and the negative ion generator with the antibacterial coating in the prior art, the photocatalyst element 30 can not be consumed, so that the photocatalyst element does not need to be replaced regularly, is more convenient to use, and can save the use cost. Moreover, the photocatalyst element 30 and the illumination unit 40 have simpler structures and lower manufacturing cost, and can achieve both convenience and economy.

The photocatalyst is a generic term for a semiconductor material having a photocatalytic function. A typical photocatalytic material is titanium dioxide, which generates a substance having a strong oxidizing property (e.g., hydroxyl radical, oxygen, etc.) under light irradiation, and is useful for decomposing organic compounds, partially inorganic compounds, bacteria, viruses, etc. The photocatalyst element 30 in this embodiment includes a nickel mesh, which is disposed on the damper 20 and coated with titanium dioxide. The titanium dioxide is irradiated by the lighting unit 40 to generate a light excitation effect. Active oxygen and hydroxyl radicals are generated through the optical excitation effect, and can efficiently decompose microorganisms such as bacteria and viruses in the air, organic matters such as formaldehyde and TVOC, and inorganic matters such as amide and sulfide, so that the air purification is realized, and the peculiar smell of the air is removed. The titanium dioxide coated on the nickel screen can not be lost in the air treatment process, pollutants can be continuously purified under the irradiation of the lighting unit 40, the replacement is not needed, and the air purifier has the advantages of lasting time and continuous effect.

It should be noted that, in the present embodiment, as shown in fig. 4, the lighting unit 40 is disposed on the damper 20, which is advantageous in that, during the rotation of the damper 20, the distance between the lighting unit 40 and the photocatalyst element 30 is not changed, so as to ensure that the photocatalyst element 30 is still located within the effective irradiation range of the lighting unit 40 after the damper 20 is moved, thereby ensuring that the illumination intensity of the lighting unit 40 is enough to activate the photocatalyst element 30 to perform air purification. However, this is not restrictive, and in some other embodiments not shown in the figures, the illumination unit 40 may be disposed on the inner wall of the housing 10, as long as the illumination unit 40 is located in the air duct 11 and can illuminate and excite the photocatalyst element 30, and the present invention is within the protection scope.

As shown in fig. 4, the damper 20 includes two connecting seats 21 and two baffles 22, the connecting seats 21 are of a fan-shaped structure, the two connecting seats 21 are oppositely disposed, and the baffles 22 are connected between the two connecting seats 21. The connecting base 21 is provided with a rotating shaft 211, and the connecting base 21 is pivotally connected to the housing 10 through the rotating shaft 211, so that when the connecting base 21 rotates, the baffle 22 can be driven to rotate in the air duct 11. As shown in fig. 2, in the first position of the damper 20, the baffle 22 covers the inner circulation intake 12; as shown in fig. 3, in the second position of the damper 20, the damper 22 covers the outer circulation intake vents 13.

As shown in fig. 2 and 3, the baffle 22 has a first side 221 and a second side (not shown in the drawings) disposed opposite to each other; the first side 221 of the baffle 22 faces the inner circulation intake vent 12 or covers the outer circulation intake vent 13, in other words, in the first position of the damper 20, the first side 221 of the baffle 22 covers the inner circulation intake vent 12, so as to close the inner circulation intake vent 12; in the second position of the damper 20, the first side 221 of the baffle 22 covers the outer circulation intake 13, thereby closing the outer circulation intake 13. The second side faces the rotational axis direction of the damper 20, a nickel mesh coated with titanium oxide is stuck on the second side of the baffle 22, and the lighting unit 40 is also disposed on the side of the second side of the baffle 22, and the irradiation direction is disposed toward the second side of the baffle 22.

The lighting unit 40 comprises a support 41 and two LED lamps 42, the support 41 is in a long strip shape, the support 41 is positioned between the two connecting seats 21, two ends of the support 41 are tightly screwed on the two connecting seats 21 through screws 43, so that the nickel net is approximately parallel to the support 41, the two LED lamps 42 are arranged on the support 41 at intervals, the titanium dioxide on the nickel net is irradiated through the LED lamps 42, the titanium dioxide is activated to generate active oxygen and hydroxyl radicals, and bacteria, viruses and other microorganisms in the air and formaldehyde, organic matters such as TVOC, ammoniated compounds such as TVOC, sulfide and other inorganic matters are subjected to efficient chemical reaction and decomposition through the active oxygen and the hydroxyl radicals, so that the substances are removed, the air is purified, and the peculiar smell of the air is finally removed.

It should be noted that, in the present embodiment, the support 41 is elongated, but this is not limiting, and in some other embodiments not disclosed in the drawings, the support 41 may also be in other shapes such as arc shape, ring shape, etc., as long as the support is connected to the connecting seat 21 and is configured to mount the LED lamp 42, which is within the protection scope of the present invention. Similarly, the number of the LED lamps 42 may be one, two or more.

It should be further noted that, the lighting unit 40 further includes a power line 44, a wiring harness 45 and a plug connector 46, the wiring harness 45 is disposed on the support 41, in order to facilitate wiring, the rotating shaft 211 is a hollow shaft, when the air door 20 is installed, the rotating shaft 211 of the connecting seat 21 is penetrated through the housing 10 and extends to the outside of the housing 10, therefore, the rotating shaft 211 adopts a hollow shaft, the inside of the hollow shaft can be used as a passage of the power line 44, a wiring hole 212 communicated with the hollow shaft is formed in the connecting seat 21, the power line 44 can enter the inside of the hollow shaft through the wiring hole 212, and penetrates out of the inside of the hollow shaft to the outside of the housing 10, so as to be connected to an external power source.

During the use of the vehicle air conditioner, condensed water may be condensed inside the case 10 or external rainwater may enter, and although the nickel mesh itself may be used in a humid and water environment, the lighting unit 40 is easily short-circuited. In order to avoid short circuit of the lighting unit 40, the wiring position of the LED lamp 42 is hermetically disposed, that is, the lamp holder of the LED lamp 42 and the wire harness 45 connector are all subjected to waterproof treatment, the lamp holder of the LED lamp 42 is filled with transparent epoxy glue for waterproofing, and the wire harness 45 connector is a waterproof plug. Therefore, even if the surrounding environment is moist, the use of the photocatalyst module is not influenced.

For convenience of manufacture and installation, the two connecting seats 21 and the baffle 22 are of an integrally formed structure. However, this is not restrictive, and in some other embodiments not shown in the drawings, the connecting seat 21 and the baffle 22 may be bonded, welded, clamped, etc., all of which are within the scope of the present invention.

The baffle 22 is an arc-shaped plate, the second side surface is the inner surface of the arc-shaped plate, and the lighting unit 40 is positioned at the position of the symmetry axis of the arc-shaped plate. By arranging the baffle 22 as an arc, the second side is arranged as the inner surface of the arc. In the footpath of arc, lighting unit 40 is equivalent to the centre of a circle position that is located the arc place circle, and lighting unit 40 equals to each some distance on the arc, and because the LED lamp 42 among lighting unit 40 is the pointolite, consequently, adopt this kind of mode of setting, not only can increase the area of nickel net, and then increase titanium dioxide's illumination area, can guarantee moreover that the illumination of each position is the same basically on the nickel net to make photocatalyst element 30's purifying effect best.

Because the outdoor air composition is complicated, the foreign matter is more, and when opening the extrinsic cycle, the foreign matter is easily glued on the nickel net, leads to partly being sheltered from by titanium dioxide, can't receive the illumination, influences the performance of photocatalyst element 30.

In order to avoid the above problems, in the present embodiment, as shown in fig. 2 and fig. 3, the internal circulation intake 12 is disposed opposite to the air outlet 14, and the external circulation intake 13 is disposed adjacent to the air outlet 14; as shown in fig. 2, in the first position of the damper 20, an external circulation airflow passage area 15 is formed between the external circulation intake 13 and the air outlet 14, and the baffle 22 is located outside the external circulation airflow passage area 15.

The internal circulation air inlet 12 is located above the external circulation air inlet 13 in fig. 2, and the air outlet 14 is located below the external circulation air inlet 13 in fig. 2. When the vehicle-mounted air conditioner works in an external circulation mode, the baffle plate 22 moves to the position above the external circulation air inlet 13 in fig. 2 to shield the internal circulation air inlet 12, at the moment, the external circulation air inlet 13 is communicated with the air outlet 14 to form an external circulation air flow circulation area 15, and air flows to the air outlet 14 from the lower part in fig. 2 after entering through the external circulation air inlet 13. Therefore, the position of the baffle 22 with the nickel screen is exactly the opposite direction of the air flow, which is equivalent to avoiding the flow area of the air flow, and the direction of the nickel screen is gradually away from the air flow direction, therefore, when the external circulation is opened, because the position of the nickel screen is outside the air flow area, even if a foreign object enters the air duct 11, the position of the nickel screen avoids the foreign object, and the foreign object directly flows to the air outlet 14 without being stuck on the nickel screen, thereby ensuring the performance of the photocatalyst element 30.

When the internal circulation opening is opened, as shown in fig. 3, the baffle 22 rotates to the right side of the internal circulation air inlet 12 in fig. 3, and the external circulation air inlet 13 is closed, so that air flow passes through the nickel net and takes away active oxygen and hydroxyl radicals generated by titanium dioxide, and thus, the air before entering the evaporator is subjected to purification treatment such as sterilization and bacteriostasis, so that clean air enters the evaporator, bacteria are prevented from breeding in a humid environment, and peculiar smells such as musty are generated.

According to the utility model discloses a still provide an on-vehicle air conditioning system, this on-vehicle air conditioning system includes foretell air door subassembly.

Whole photocatalyst module volume is less, and through pre-installing on the wind door subassembly, realizes that the less change of on-vehicle air conditioning system can match, and is little to on-vehicle air conditioning system influence, and the cost input of newly-increased photocatalyst module is less promptly. And the photocatalyst can not be consumed in the work, so the photocatalyst has the advantages of sustainable use and no need of replacement, the replacement working hours are reduced, the replacement cost is reduced, and the benefit is obvious.

The vehicle-mounted air conditioning system can effectively treat peculiar smell of the vehicle-mounted air conditioning system through the newly added photocatalyst module, and clean and fresh air in the vehicle is realized. Meanwhile, air treatment devices such as a high-efficiency filter screen, an anion generator and active carbon can be omitted, multiple effects of sterilization, disinfection, peculiar smell removal and the like can be integrated, replacement is not needed, complaints of customers on peculiar smell in the vehicle can be greatly reduced, and continuous and clean air in the vehicle, which is generally concerned by the customers, can be realized.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (10)

1. A damper assembly, comprising:

the air conditioner comprises a shell (10), wherein the shell (10) is provided with an air duct (11), the shell (10) is further provided with an internal circulation air inlet (12), an external circulation air inlet (13) and an air outlet (14), and the internal circulation air inlet (12), the external circulation air inlet (13) and the air outlet (14) are communicated with the air duct (11);

the air door (20), the said air door (20) is set up in the said wind channel (11), the said air door (20) is used for closing the said internal circulation air intake (12) or the said external circulation air intake (13);

a photocatalyst element (30), the photocatalyst element (30) being provided on the damper (20);

the lighting unit (40), the lighting unit (40) sets up in the wind channel (11), the lighting unit (40) is used for shining and activate photocatalyst element (30), so that photocatalyst element (30) purifies the air current in the wind channel (11).

2. The damper assembly of claim 1,

the air door (20) is rotatably arranged in the air duct (11), and the air door (20) is switched between a first position for closing the inner circulating air inlet (12) and a second position for closing the outer circulating air inlet (13) through rotation;

the lighting unit (40) is arranged on the air door (20), so that the distance between the lighting unit (40) and the photocatalyst element (30) is unchanged in the rotation process of the air door (20).

3. The damper assembly of claim 2, wherein the damper (20) comprises:

a connecting base (21), the connecting base (21) being rotatably connected to the housing (10), the illumination unit (40) being provided on the connecting base (21);

the baffle (22), the said baffle (22) is connected to said joint seat (21), the said baffle (22) is set up in the said wind channel (11) rotatably through the said joint seat (21);

in the first position of the air door, the baffle plate (22) covers the inner circulation air inlet (12);

in the second position of the air door, the baffle plate (22) covers the external circulation air inlet (13), and the photocatalyst element (30) is arranged on the baffle plate (22).

4. The damper assembly of claim 3,

the baffle (22) is provided with a first side surface (221) and a second side surface which are oppositely arranged;

the first side surface (221) is used for covering the inner circulation air inlet (12) or the outer circulation air inlet (13);

the second side faces the rotation axis of the damper (20), the photocatalyst element (30) is disposed on the second side, and the irradiation direction of the illumination unit (40) is disposed toward the second side of the baffle plate (22).

5. The damper assembly of claim 4,

the baffle (22) is an arc-shaped plate, the second side face is the inner surface of the arc-shaped plate, and the lighting unit (40) is located at the position of the symmetry axis of the arc-shaped plate.

6. The damper assembly of claim 3,

the inner circulating air inlet (12) and the air outlet (14) are arranged oppositely, and the outer circulating air inlet (13) and the air outlet (14) are arranged adjacently;

in the first position of the air door (20), an outer circulation airflow circulation area (15) is formed between the outer circulation air inlet (13) and the air outlet (14), and the baffle plate (22) avoids the outer circulation airflow circulation area (15).

7. The damper assembly of claim 3,

a rotating shaft (211) is arranged on the connecting seat (21), the rotating shaft (211) penetrates through the shell (10), and the connecting seat (21) is pivotally connected to the shell (10) through the rotating shaft (211);

the rotating shaft (211) is a hollow shaft, a wiring hole (212) communicated with the hollow shaft is formed in the connecting seat (21), and a power line of the lighting unit (40) extends to the outside of the shell (10) through the wiring hole (212) and the hollow shaft.

8. The damper assembly of claim 3, wherein the illumination unit (40) comprises:

a bracket (41), wherein the bracket (41) is arranged on the connecting seat (21);

the LED lamp (42) is arranged on the support (41), and the wiring position of the LED lamp (42) is arranged in a sealing mode.

9. The damper assembly of claim 1, wherein the photocatalyst element (30) comprises:

the nickel screen covers the air door (20), and titanium dioxide is coated on the nickel screen.

10. A vehicle air conditioning system comprising the damper assembly of any one of claims 1-9.

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