Automatic cleaning device for fresh air duct and subway air conditioner

Abstract

The invention provides a fresh air duct automatic cleaning device which is used for being installed in a cavity formed in the side wall of a fresh air duct of an air conditioner and comprises a machine base, a telescopic mechanism and a cleaning mechanism. The base is arranged in the cavity; the telescopic mechanism is slidably connected to the machine base in the extending direction of the fresh air duct and provided with a telescopic output end perpendicular to the fresh air duct. The cleaning mechanism is connected to the telescopic output end, and a cleaning brush is arranged on the cleaning mechanism; wherein the cavity is provided with an openable sealing door, and when the sealing door is opened, the telescopic mechanism is used for driving the cleaning mechanism to stretch out of the cavity and move along the fresh air duct, so that the cleaning brush cleans the inner wall of the fresh air duct. According to the automatic cleaning device for the fresh air duct, the interior of the fresh air duct can be cleaned regularly, and dust is prevented from being accumulated in the fresh air duct. The invention further provides a subway air conditioner adopting the fresh air duct automatic cleaning device.

Description

Technical Field

[0001] The invention belongs to the technical field of subway air conditioning equipment, and in particular relates to an automatic cleaning device for a fresh air duct and a subway air conditioner. Background Art

[0002] The refrigeration principle of subway air conditioners is achieved through a refrigeration cycle system, which mixes the return air in the subway car with the fresh air outside the subway car for cooling, and then sends it to the subway car through the air supply vents for circulation. Subway air conditioners have fresh air ducts, and the fresh air from the outside enters the subway air conditioner through the fresh air ducts.

[0003] In the prior art, when the subway has run 600,000 kilometers or has been in operation for five years, the subway will be repaired and the subway air conditioner will be disassembled and cleaned. Therefore, fresh air is passed into the fresh air duct for a long time, and dust is easily accumulated inside, affecting the air cleanliness inside the subway car. Since the subway air conditioner is large in size, it is difficult to clean the dust deep in the fresh air duct during daily maintenance and cleaning. Dust is easily accumulated in the deep fresh air duct and combines with water molecules in the return air to breed bacteria. Summary of the invention

[0004] The embodiment of the present invention provides a fresh air duct automatic cleaning device for a subway air conditioner, which is intended to automatically clean dust in the fresh air duct of the subway air conditioner.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is: in the first aspect, an automatic cleaning device for a fresh air duct is provided, which is used to be installed in a cavity opened in the side wall of the fresh air duct of an air conditioner, and comprises a base, a telescopic mechanism and a cleaning mechanism; the base is arranged in the cavity; the telescopic mechanism is slidably connected to the base along the extension direction of the fresh air duct, and has a telescopic output end perpendicular to the fresh air duct; the cleaning mechanism is connected to the telescopic output end, and a cleaning brush is provided on the cleaning mechanism; wherein, the cavity has an openable sealing door, and when the sealing door is opened, the telescopic mechanism is used to drive the cleaning mechanism to extend out of the cavity and move along the fresh air duct, so that the cleaning brush cleans the inner wall of the fresh air duct.

[0006] In combination with the first aspect, in a possible implementation, the cleaning mechanism includes a first slide, a driving assembly and a transmission rod group; the first slide is slidably connected to the base and is connected to the telescopic output end; the driving assembly is arranged on the first slide, and the driving assembly is used to drive the cleaning mechanism to move in the fresh air duct; the transmission rod group is arranged on the first slide, and the transmission rod group is connected to the output end of the driving assembly and is connected to the cleaning brush, so as to drive the cleaning brush to swing back and forth.

[0007] In combination with the first aspect, in a possible implementation, the transmission rod group includes a rotating member, a rocker, a connecting member, two connecting rods, a support rod and a mounting member; the rotating member is rotatably arranged on the first slide plate and is connected to the output end of the driving assembly; one end of the rocker is rotatably connected to the edge of the rotating member; the connecting member has three connecting arms, one ends of the three connecting arms are interconnected and form a first hinged end, and the other ends of the three connecting arms each form a second hinged end, wherein the two second hinged ends are respectively connected to the rocker and the first slide plate, and the connecting member is used to slide on the first slide plate driven by the rotating member; one end of one of the connecting rods is hinged to the other second hinged end, and one end of the other connecting rod is hinged to the first hinged end; one end of the support rod is hinged to the first slide plate, and the other end is hinged to one of the connecting rods; the mounting member has two hinge points, and the two hinge points are respectively hinged to the two connecting rods, and the cleaning brush is connected to the mounting member.

[0008] In combination with the first aspect, in a possible implementation, the driving assembly includes a rotating driving member, a first gear and a second gear; the rotating driving member is disposed on the first slide; the first gear is sleeved on the output end of the rotating driving member; the second gear is located below the first gear, and is sleeved on the rotating shaft of the rotating member, and is meshed with the first gear; wherein the rotating driving member drives the rotating member to rotate through the first gear and the second gear and drives the cleaning brush to swing back and forth through two connecting rods.

[0009] In combination with the first aspect, in a possible implementation, the automatic cleaning device for the fresh air duct also includes a rack, which is disposed on the top wall of the cavity and is meshedly connected to the first gear.

[0010] In combination with the first aspect, in a possible implementation, the first slide plate includes a base plate and a vertical pole, the base plate is provided with a slide groove perpendicular to the extension direction of the fresh air duct, the vertical pole is slidably connected to the slide groove, and the vertical pole is slidably connected to the base; the transmission rod group is arranged on the base plate, and the rotating drive component is arranged on the vertical pole.

[0011] In combination with the first aspect, in a possible implementation, the telescopic mechanism includes a second slide and a telescopic driving member, the second slide is slidably connected to the base, and the telescopic driving member is disposed on the second slide and connected to the base plate.

[0012] In combination with the first aspect, in a possible implementation, the machine base is provided with a first slide parallel to the extension direction of the fresh air duct, a second slide parallel to the first slide, and two third slides located between the first slide and the second slide, the two third slides are spaced apart and are both perpendicular to the first slide; the second slide is slidably connected to the first slide, the vertical rod is slidably connected to one of the third slides; the bottom plate is slidably connected to the other third slide; wherein, when the vertical rod and the bottom plate both slide along the third slide, the telescopic drive member pushes the second slide to make the vertical rod slide into the second slide.

[0013] In combination with the first aspect, in a possible implementation, a fourth slide and a fifth slide are further provided on the machine base, and the fourth slide and the fifth slide are both parallel to the first slide and are both connected to the third slide, and an end of the fourth slide away from the third slide is provided with a connecting port connected to the fifth slide; wherein, when the base plate slides in the fourth slide, the first gear is meshed and connected with the second gear; when the base plate enters the fifth slide through the connecting port, the first gear is separated from the second gear.

[0014] The beneficial effect of the automatic cleaning device for the fresh air duct provided by the present invention is that: compared with the prior art, the present invention drives the cleaning mechanism to extend out of the cavity through the telescopic mechanism, and the cleaning mechanism can move along the fresh air duct, and clean the inner wall of the fresh air duct through the cleaning brush. When the sealing door is opened, the cleaning brush can extend out of the cavity and enter the fresh air duct, move along the fresh air duct to clean the inner wall of the fresh air duct, and can regularly clean the inside of the fresh air duct to avoid dust accumulation inside the fresh air duct; and after the cleaning mechanism finishes cleaning the inside of the fresh air duct, the sealing door can be closed to avoid fresh air blowing into the cavity and accumulating dust.

[0015] In a second aspect, an embodiment of the present invention further provides a subway air conditioner that uses an automatic cleaning device for a fresh air duct.

[0016] The subway air conditioner provided by the present invention has the beneficial effect that, compared with the prior art, the subway air conditioner of the present invention adopts an automatic cleaning device for the fresh air duct, and can clean the dust accumulated on the inner wall of the fresh air duct through a cleaning component after fresh air is introduced into the fresh air duct for a long time. The subway air conditioner equipped with the automatic cleaning device for the fresh air duct can regularly clean the dust accumulated inside the fresh air duct, improve the air cleanliness inside the subway car, avoid the breeding of bacteria, and improve the air quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the three-dimensional structure of the fresh air duct used in the embodiment of the present invention; Figure 2 A schematic diagram of a three-dimensional structure of a fresh air duct automatic cleaning device provided by an embodiment of the present invention located in a cavity; Figure 3 A schematic diagram of a three-dimensional structure of a fresh air duct automatic cleaning device provided by an embodiment of the present invention, located deep in the fresh air duct; Figure 4 A schematic diagram of the three-dimensional structure of the fresh air duct automatic cleaning device provided by an embodiment of the present invention located at the fresh air outlet; Figure 5 A schematic diagram of the three-dimensional structure of a transmission rod group used in an embodiment of the present invention; Figure 6 It is a front view structural schematic diagram of the cleaning mechanism used in the embodiment of the present invention in a cleaning state; Figure 7 It is a front view structural schematic diagram of the cleaning mechanism used in the embodiment of the present invention in a recovery state; Figure 8 A schematic diagram of the three-dimensional structure of a subway air conditioner provided by an embodiment of the present invention; In the figure: 10, base; 11, first slide; 12, second slide; 13, third slide; 14, fourth slide; 141, connection port; 15, fifth slide; 20, telescopic mechanism; 21, second slide; 22, telescopic drive member; 30, cleaning mechanism; 31, cleaning brush; 32, first slide; 321, bottom plate; 3211, slide; 3212, slider; 322, vertical rod; 33, drive Component; 331, rotating drive member; 332, first gear; 333, second gear; 34, transmission rod group; 341, rotating member; 342, rocker; 343, connecting member; 344, connecting rod; 345, support rod; 346, mounting member; 40, rack; 50, fresh air duct; 51, cavity; 52, sealing door; 53, fresh air outlet; 60, subway air conditioner; 61, supply air outlet; 62, return air outlet. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. The terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0020] Please also read Figure 1 and Figure 2, the automatic cleaning device for the fresh air duct 50 provided by the present invention is now described. The automatic cleaning device for the fresh air duct 50 is used to be installed in a cavity 51 opened on the side wall of the fresh air duct 50 of the air conditioner, and includes a base 10, a telescopic mechanism 20 and a cleaning mechanism 30; the base 10 is arranged in the cavity 51; the telescopic mechanism 20 is slidably connected to the base 10 along the extension direction of the fresh air duct 50, and has a telescopic output end perpendicular to the fresh air duct 50; the cleaning mechanism 30 is connected to the telescopic output end, and a cleaning brush 31 is provided on the cleaning mechanism 30; wherein, the cavity 51 has an openable sealing door 52, and when the sealing door 52 is opened, the telescopic mechanism 20 is used to drive the cleaning mechanism 30 to extend out of the cavity 51 and move along the fresh air duct 50, so that the cleaning brush 31 cleans the inner wall of the fresh air duct 50.

[0021] It should be noted that the air conditioner is provided with a fresh air outlet 53 connected to the fresh air duct 50, and the cleaning brush 31 cleans the impurities on the inner wall of the fresh air duct 50 and discharges the impurities out of the air conditioner through the fresh air outlet 53. The telescopic mechanism 20 is slidably connected to the base 10, and can drive the cleaning mechanism 30 to extend out of the cavity 51 through the telescopic output end perpendicular to the fresh air duct 50, and can also drive the cleaning mechanism 30 into the cavity 51. When the sealing door 52 is opened, the telescopic mechanism 20 drives the cleaning mechanism 30 to extend out of the cavity 51, and the cleaning mechanism 30 can move along the fresh air duct 50 and clean the inner wall of the fresh air duct 50 through the cleaning brush 31; when the telescopic mechanism 20 drives the cleaning mechanism 30 to enter the cavity 51, the sealing door 52 is closed, which can prevent the fresh air from blowing into the cavity 51 and causing dust to accumulate inside the cavity 51. At the same time, the cleaning mechanism 30 entering the cavity 51 can avoid hindering the outside fresh air from entering the air conditioner, thereby improving the fresh air intake effect.

[0022] The beneficial effect of the automatic cleaning device for the fresh air duct 50 provided by the present invention is that: compared with the prior art, the present invention drives the cleaning mechanism 30 to extend out of the cavity 51 through the telescopic mechanism 20, and the cleaning mechanism 30 can move along the fresh air duct 50, and clean the inner wall of the fresh air duct 50 through the cleaning brush 31. When the sealing door 52 is opened, the cleaning brush 31 can extend out of the cavity 51 and enter the fresh air duct 50, move along the fresh air duct 50 to clean the inner wall of the fresh air duct 50, and can regularly clean the inside of the fresh air duct 50 to avoid dust accumulation inside the fresh air duct 50; and after the cleaning mechanism 30 finishes cleaning the inside of the fresh air duct 50, the sealing door 52 can be closed to avoid fresh air blowing into the cavity 51 to accumulate dust.

[0023] In one possible implementation, see Figure 3 and Figure 4The cleaning mechanism 30 includes a first slide plate 32, a driving assembly 33 and a transmission rod group 34; the first slide plate 32 is slidably connected to the base 10 and is connected to the telescopic output end; the driving assembly 33 is arranged on the first slide plate 32, and the driving assembly 33 is used to drive the cleaning mechanism 30 to move in the fresh air duct 50; the transmission rod group 34 is arranged on the first slide plate 32, and the transmission rod group 34 is connected to the output end of the driving assembly 33, and is connected to the cleaning brush 31, and is used to drive the cleaning brush 31 to swing back and forth.

[0024] It should be noted that the first slide plate 32 is slidably connected to the base 10 and is connected to the telescopic output end. The first slide plate 32 can move in a direction close to the fresh air duct 50 under the action of the telescopic output end. The driving assembly 33 provides the cleaning mechanism 30 with power to move in the fresh air duct 50, so that the cleaning mechanism 30 can drive the cleaning brush 31 to clean the impurities in the fresh air duct 50 to the outside of the air conditioner. The transmission rod group 34 is provided on the first slide plate 32, and the transmission rod group 34 can drive the cleaning brush 31 to swing in the fresh air duct 50. Under the driving action of the driving assembly 33, the transmission rod group 34 drives the cleaning brush 31 to swing during the movement in the fresh air duct 50, thereby improving the cleaning effect of the fresh air duct 50.

[0025] In one possible implementation, see Figures 5 to 7 The transmission rod group 34 includes a rotating member 341, a rocker 342, a connecting member 343, two connecting rods 344, a support rod 345 and a mounting member 346; the rotating member 341 is rotatably arranged on the first slide plate 32 and is connected to the output end of the driving assembly 33; one end of the rocker 342 is rotatably connected to the edge of the rotating member 341; the connecting member 343 has three connecting arms, one end of the three connecting arms is connected to each other and forms a first hinge end, and the other ends of the three connecting arms form a second hinge end, wherein the two second hinge ends are respectively Together with the rocker 342 and the first slide plate 32, the connecting member 343 is used to slide on the first slide plate 32 driven by the rotating member 341; one end of one of the connecting rods 344 is hinged to the other second hinged end, and one end of the other connecting rod 344 is hinged to the first hinged end; one end of the support rod 345 is hinged to the first slide plate 32, and the other end is hinged to one of the connecting rods 344; the mounting member 346 has two hinge points, and the two hinge points are respectively hinged to the two connecting rods 344, and the cleaning brush 31 is connected to the mounting member 346.

[0026] It should be noted that the connecting member 343 may be a trilobate, consisting of three connecting arms, and the ends of the three connecting arms intersect to form a first hinge end, and the other ends of the three connecting arms each form a second hinge end; two connecting rods 344 are arranged at intervals up and down, one end of the upper connecting rod 344 is hinged to one of the second hinge ends, the lower connecting rod 344 is hinged to the first hinge end, and the lower connecting rod 344 is hinged to one end of the support rod 345. The ends of the two connecting rods 344 are both hinged to the mounting member 346. The mounting member 346 may be "L"-shaped, and consists of a vertical first rod body and a second rod body, each of which has a hinge point, the length of the first rod body is greater than the length of the second rod body, the upper connecting rod 344 is hinged to the middle of the first rod body, and the lower connecting rod 344 is hinged to the end of the second rod body, and the cleaning brush 31 is mounted on the first rod body. When the cleaning mechanism 30 drives the cleaning brush 31 to extend out of the cavity 51, the driving assembly 33 provides rotational power for the rotating member 341. At this time, the rotating member 341 pushes the connecting member 343 hinged to the second slide plate 21 through the rocker 342 to swing around the hinge point. The mounting member 346 swings back and forth under the drive of the connecting member 343. The cleaning brush 31 swings back and forth inside the fresh air duct 50 under the drive of the cleaning mechanism 30, and cleans the entire fresh air duct 50.

[0027] In one possible implementation, see Figure 3 and Figure 4 The driving assembly 33 includes a rotating driving member 331, a first gear 332 and a second gear 333; the rotating driving member 331 is arranged on the first slide plate 32; the first gear 332 is sleeved on the output end of the rotating driving member 331; the second gear 333 is located below the first gear 332, and is sleeved on the rotating shaft of the rotating member 341, and meshes with the first gear 332; wherein the rotating driving member 331 drives the rotating member 341 to rotate through the first gear 332 and the second gear 333, and drives the cleaning brush 31 to swing back and forth through two connecting rods 344.

[0028] It should be noted that the rotary drive member 331 is disposed on the second slide plate 21, and is spaced apart from the transmission rod group 34 and is located above the transmission rod group 34. The first gear 332 is connected to the output end of the rotary drive member 331, and the second gear 333 is sleeved on the rotating shaft of the rotating member 341. The rotary drive member 331 provides a rotary power to the first gear 332, thereby driving the second gear 333 to rotate. The second gear 333 transmits the rotary power to the rotating member 341. The rotating member 341 drives the connecting member 343 to swing back and forth, and drives the two connecting rods 344 to perform a reciprocating telescopic motion. The two connecting rods 344 drive the mounting frame and the cleaning brush 31 provided on the mounting frame to swing back and forth.

[0029] In one possible implementation, see Figure 3 and Figure 4 The automatic cleaning device for the fresh air duct 50 also includes a rack 40 , which is disposed on the top wall of the cavity 51 and meshed with the first gear 332 .

[0030] It should be noted that when the cleaning mechanism 30 extends out of the cavity 51, the cleaning mechanism 30 moves toward the direction close to the fresh air duct 50, and makes the first gear 332 meshed with the rack 40. When the rotating driving member 331 drives the first gear 332 to rotate, the first gear 332 meshed with the rack 40 drives the transmission rod group 34 to drive the cleaning brush 31 to swing back and forth, and can also drive the walking mechanism to slide along the rack 40, thereby cleaning the entire fresh air duct 50, reducing control drive and improving resource utilization.

[0031] In one possible implementation, see Figure 3 and Figure 4 The first slide plate 32 includes a bottom plate 321 and a vertical rod 322. The bottom plate 321 is provided with a slide groove 3211 perpendicular to the extension direction of the fresh air duct 50. The vertical rod 322 is slidably connected to the slide groove 3211, and the vertical rod 322 is slidably connected to the base 10. The transmission rod group 34 is arranged on the bottom plate 321, and the rotating driving member 331 is arranged on the vertical rod 322.

[0032] It should be noted that the rotary drive member 331 is disposed on the vertical rod 322, and the vertical rod 322 slidably connected to the slide slot 3211 can change the relative position between the vertical rod 322 and the bottom plate 321 by changing its position in the slide slot 3211. When the vertical rod 322 is away from the bottom plate 321 and located on one side of the slide slot 3211, the first gear 332 is meshed and connected with the second gear 333; when the vertical rod 322 is close to the bottom plate 321 and located on the other side of the slide slot 3211, the first gear 332 is separated from the second gear 333.

[0033] In one possible implementation, see Figure 3 and Figure 4 The telescopic mechanism 20 includes a second slide and a telescopic driving member 22 . The second slide is slidably connected to the base 10 . The telescopic driving member 22 is disposed on the second slide and connected to the bottom plate 321 .

[0034] It should be noted that the telescopic driving member 22 may be a servo electric cylinder, which converts the pressure of compressed air into mechanical energy through pneumatic transmission, and can drive the bottom plate 321 to extend out of the cavity 51 .

[0035] In one possible implementation, see Figures 2 to 4The machine base 10 is provided with a first slide 11 parallel to the extension direction of the fresh air duct 50, a second slide 12 parallel to the first slide 11, and two third slides 13 located between the first slide 11 and the second slide 12, the two third slides 13 are spaced apart and are perpendicular to the first slide 11; the second slide seat is slidably connected to the first slide 11, the vertical rod 322 is slidably connected to one of the third slides 13; the bottom plate 321 is slidably connected to the other third slide 13; wherein, when the vertical rod 322 and the bottom plate 321 both slide along the third slide 13, the telescopic driving member 22 pushes the second slide seat to make the vertical rod 322 slide into the second slide 12.

[0036] It should be noted that the bottom wall of the base 10 is provided with a first slide 11, and the second slide 21 can be an "L"-shaped plate. One end of the first slide 32 is slidably fitted with the inner wall of the first slide 11, and the other end is slidably fitted with the bottom wall of the base 10; a slider 3212 is provided under the bottom plate 321, and the slider 3212 is slidably fitted with the inner wall of one of the third slides 13, and the two third slides 13 are both perpendicular to the first slide 11, and the third slide 13 is connected to the second slide 12. When the telescopic mechanism 20 drives the cleaning mechanism 30 to extend out of the cavity 51, the slider 3212 slides in one of the third slides 13, and the vertical rod 322 slides in the other third slide 13. The vertical rod 322 slides from the third slide 13 into the second slide 12, and slides along the second slide 12 driven by the cleaning mechanism 30, and drives the telescopic mechanism 20 to slide in the first slide 11.

[0037] In one possible implementation, see Figures 2 to 4 A fourth slide 14 and a fifth slide 15 are also provided on the base 10. The fourth slide 14 and the fifth slide 15 are both parallel to the first slide 11 and are both connected to the third slide 13. An end of the fourth slide 14 away from the third slide 13 is provided with a connecting port 141 connected to the fifth slide 15; wherein, when the bottom plate 321 slides in the fourth slide 14, the first gear 332 is meshed and connected with the second gear 333; when the bottom plate 321 enters the fifth slide 15 through the connecting port 141, the first gear 332 is separated from the second gear 333.

[0038] It should be noted that when the cleaning mechanism 30 extends out of the cavity 51, the cleaning mechanism 30 drives the reciprocatingly swinging cleaning brush 31 to move from the deep part of the fresh air duct 50 to the fresh air outlet 53 along the fourth slide 14, and then drives the cleaning brush 31 from the fresh air outlet 53 to the deep part of the fresh air duct 50 along the fifth slide 15 for cyclic cleaning, which can improve the cleanliness of the inner wall of the fresh air duct 50. The fourth slide 14 is located below the rack 40, and the fifth slide 15 is located between the fourth slide 14 and the second slide 12. When the cleaning mechanism 30 drives the cleaning brush 31 to move from the deep part of the fresh air duct 50 to the fresh air outlet 53, the slider 3212 is slidably connected with the fourth slide 14. When the cleaning brush 31 cleans the fresh air outlet 53, the slider 3212 enters the fifth slide 15 from the connection port 141, and drives the cleaning brush 31 to move to the deep part of the fresh air duct 50 along the fifth slide 15.

[0039] Specifically, when the cleaning brush 31 cleans the fresh air outlet 53, the telescopic driving member 22 pulls the bottom plate 321, so that the slider 3212 can enter the fifth slideway 15 from the fourth slideway 14 through the connecting port 141. The bottom plate 321 is pulled close to the telescopic mechanism 20 by the telescopic driving member 22. Since the vertical rod 322 is always in sliding contact with the second slideway 12, when the bottom plate 321 is close to the telescopic mechanism 20, a relative displacement occurs between the vertical rod 322 and the bottom plate 321, and the vertical rod 322 moves from the sliding contact to the fifth slideway 15. The groove 3211 moves from one end to the other end, and the first gear 332 is separated from the second gear 333. When the cleaning mechanism 30 drives the cleaning brush 31 to return to the deep part of the fresh air duct 50, the first gear 332 is only meshed with the rack 40, the transmission rod group 34 is separated from the rotating driving member 331, and the cleaning brush 31 remains stationary, so as to avoid the cleaning brush 31 from still swinging back and forth to clean the dust to the deep part of the fresh air duct 50 when the cleaning mechanism 30 drives the cleaning brush 31 to return. By arranging the fourth slide 14 and the fifth slide 15 on the base 10, the telescopic mechanism 20 and the cleaning mechanism 30 can be cooperated to make the cleaning brush 31 swing back and forth when cleaning the fresh air outlet 53, and remain stationary when moving to the deep part of the fresh air duct 50, so as to improve the cleaning degree of the fresh air duct 50.

[0040] Second, see Figure 8 The embodiment of the present invention further provides a subway air conditioner 60 that uses an automatic cleaning device for a fresh air duct 50 .

[0041] It should be noted that the subway air conditioner 60 not only has a fresh air duct 50 and a fresh air outlet 53, but also is provided with a fresh air outlet 53, an air supply outlet 61 and a return air outlet 62. The fresh air outlet 53 is connected to the fresh air duct 50, and the air supply outlet 61 and the return air outlet 62 are located inside the subway car. The air supply outlet 61 is connected to the fresh air outlet 53, so that the air in the car can be mixed with the fresh air from the outside, and is cooled through the condensation system inside the subway air conditioner 60, and finally enters the subway car from the air supply outlet 61.

[0042] The subway air conditioner 60 provided by the present invention has the beneficial effect that, compared with the prior art, the subway air conditioner 60 of the present invention adopts an automatic cleaning device for the fresh air duct 50, and can clean the dust accumulated on the inner wall of the fresh air duct 50 through the cleaning component after the fresh air is introduced into the fresh air duct 50 for a long time. The subway air conditioner 60 equipped with the automatic cleaning device for the fresh air duct 50 can regularly clean the dust accumulated inside the fresh air duct 50, improve the air cleanliness inside the subway car, avoid the breeding of bacteria, and improve the air quality.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The automatic cleaning device for fresh air duct is characterized by: Used to be installed in the cavity opened on the side wall of the fresh air duct of the air conditioner, including: A machine base, disposed in the cavity; A telescopic mechanism, slidably connected to the base along the extension direction of the fresh air duct, and having a telescopic output end perpendicular to the fresh air duct; A cleaning mechanism connected to the telescopic output end, wherein the cleaning mechanism is provided with a cleaning brush; Wherein, the cavity has an openable sealing door. When the sealing door is opened, the telescopic mechanism is used to drive the cleaning mechanism to extend out of the cavity and move along the fresh air duct, so that the cleaning brush cleans the inner wall of the fresh air duct.

2. The automatic cleaning device for the fresh air duct according to claim 1, characterized in that: The cleaning mechanism comprises: A first slide plate is slidably connected to the base and connected to the telescopic output end; A driving assembly, disposed on the first slide plate, the driving assembly being used to drive the cleaning mechanism to move in the fresh air duct; A transmission rod group is arranged on the first slide plate, and the transmission rod group is connected to the output end of the driving component and to the cleaning brush, and is used to drive the cleaning brush to swing back and forth.

3. The automatic cleaning device for the fresh air duct according to claim 2, characterized in that: The transmission rod assembly comprises: A rotating member, rotatably disposed on the first slide plate and connected to an output end of the driving assembly; A rocker, one end of which is rotatably connected to the edge of the rotating member; A connecting member having three connecting arms, one ends of the three connecting arms are connected to each other to form a first hinged end, and the other ends of the three connecting arms each form a second hinged end, wherein two of the second hinged ends are respectively connected to the rocker and the first slide plate, and the connecting member is used to slide on the first slide plate driven by the rotating member; Two connecting rods, one end of one of the connecting rods is hinged to the second hinged end of the other connecting rod, and one end of the other connecting rod is hinged to the first hinged end; A support rod, one end of which is hinged to the first slide plate, and the other end of which is hinged to one of the connecting rods; The mounting member has two hinge points, and the two hinge points are respectively hinged to the two connecting rods, and the cleaning brush is connected to the mounting member.

4. The automatic cleaning device for the fresh air duct according to claim 3, characterized in that: The drive assembly comprises: A rotary driving member, disposed on the first slide plate; A first gear, sleeved on the output end of the rotary drive member; A second gear is located below the first gear, sleeved on the rotating shaft of the rotating member, and meshed with the first gear; Wherein, the rotary driving member drives the rotating member to rotate through the first gear and the second gear and drives the cleaning brush to swing back and forth through the two connecting rods.

5. The automatic cleaning device for the fresh air duct according to claim 4, characterized in that: The automatic cleaning device for the fresh air duct also includes a rack, which is arranged on the top wall of the cavity and is meshed with the first gear.

6. The automatic cleaning device for the fresh air duct according to claim 4, characterized in that: The first slide plate includes a bottom plate and a vertical rod, the bottom plate is provided with a slide groove perpendicular to the extension direction of the fresh air duct, the vertical rod is slidably connected to the slide groove, and the vertical rod is slidably connected to the base; the transmission rod group is arranged on the bottom plate, and the rotating drive component is arranged on the vertical rod.

7. The automatic cleaning device for the fresh air duct according to claim 6, characterized in that: The telescopic mechanism comprises a second slide and a telescopic driving member, wherein the second slide is slidably connected to the base, and the telescopic driving member is arranged on the second slide and connected to the bottom plate.

8. The automatic cleaning device for the fresh air duct according to claim 7, characterized in that: The base is provided with a first slide parallel to the extension direction of the fresh air duct, a second slide parallel to the first slide, and two third slides located between the first slide and the second slide, the two third slides are spaced apart and are perpendicular to the first slide; the second slide is slidably connected to the first slide, the vertical rod is slidably connected to one of the third slides; the bottom plate is slidably connected to the other third slide; When the vertical rod and the bottom plate both slide along the third slide track, the telescopic driving member pushes the second slide seat to make the vertical rod slide into the second slide track.

9. The automatic cleaning device for the fresh air duct according to claim 8, characterized in that: The base is also provided with a fourth slide and a fifth slide, the fourth slide and the fifth slide are both parallel to the first slide and are both connected to the third slide, and the end of the fourth slide away from the third slide is provided with a connection port connected to the fifth slide; Wherein, when the bottom plate slides in the fourth slideway, the first gear is meshed and connected with the second gear; when the bottom plate enters the fifth slideway through the connecting port, the first gear is separated from the second gear.

10. A subway air conditioner, characterized in that: An automatic fresh air duct cleaning device as described in any one of claims 1 to 9 is used.

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