Fresh air device and air conditioner

Abstract

The present invention provides a fresh air device and an air conditioner, comprising a motor, a first fan and a second fan, the motor comprising a body and a first output shaft, the first fan being mounted on the first output shaft, a connecting structure being mounted on an end of the motor away from the first output shaft, the connecting structure being connected to the second fan, the first output shaft being further connected to a clutch structure, the clutch structure being selectively capable of driving the connecting structure to operate. The first fan and the second fan are respectively located at both ends of the motor, thereby forming two fresh air inlets, increasing the fresh air intake volume, and at the same time, one motor controls the two fans through the connecting structure and the clutch structure, so that the first fan and the second fan can not only be controlled simultaneously, but also can be controlled separately, thereby increasing the fresh air intake volume while saving space, making the fresh air device more compact as a whole.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning, and in particular to a fresh air device and an air conditioner. Background Art

[0002] The fresh air system is based on the use of special equipment to send fresh air into the room on one side of the closed room, and then exhaust it to the outside from the other side by special equipment, forming a "fresh air flow field" in the room, thereby meeting the needs of indoor air purification. In order to combine the air purification function with the indoor heating or cooling function, new improved air conditioners with fresh air systems installed on air conditioners have begun to appear in the prior art. For example, the invention in the prior art is called an air conditioner with a fresh air function, which combines the fresh air system with a cabinet air conditioner, and adds a fresh air device at the bottom of the cabinet air conditioner.

[0003] The fresh air device needs to be equipped with a motor and a fan. The motor drives the fan to rotate and guide the fresh air in. In order to increase the amount of fresh air intake, two fresh air inlets are set at the lower end of the cabinet air conditioner, which requires two fans to guide the incoming air. If the two fans are controlled by one motor respectively, two motors and two fans are required, which takes up a large space; when a dual-axis motor is used to control the two fans, they cannot be controlled separately and the fresh air intake cannot be guided in a targeted manner. Summary of the invention

[0004] In view of this, the present invention aims to provide a fresh air device to solve the problem in the prior art that when two air inlets are used to guide the fresh air intake, the two fans cannot be controlled separately.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A fresh air device includes a motor, a first fan and a second fan. The motor includes a body and a first output shaft. The first fan is installed on the first output shaft. A connecting structure is installed at one end of the motor away from the first output shaft. The connecting structure is connected to the second fan. A clutch structure is also connected to the first output shaft. The clutch structure can selectively drive the connecting structure to operate. The first fan and the second fan are respectively located at the two ends of the motor, thereby forming two fresh air inlets, increasing the fresh air intake. At the same time, the two fans are controlled by one motor through the connecting structure and the clutch structure, so that the first fan and the second fan can not only be controlled simultaneously, but also can be controlled separately. While increasing the fresh air intake, space is saved, making the fresh air device more compact as a whole.

[0007] Further, the clutch structure includes a fixed disk and a clutch ring, the fixed disk is connected to the first output shaft, the clutch ring can be selectively engaged with or separated from the fixed disk, the clutch ring is connected to the connection structure, and the clutch ring can selectively drive the connection structure to operate. The fixed disk is connected to the first output shaft, and the fixed disk is driven to rotate by the first output shaft. When the clutch ring is engaged with the fixed disk, the fixed disk drives the clutch ring to operate, and the clutch ring drives the connection structure to operate; when the clutch ring is separated from the fixed disk, the clutch ring cannot drive the connection structure to operate, so that the clutch ring of the clutch structure can selectively drive the connection structure to operate, thereby realizing simultaneous or separate control of the first fan and the second fan.

[0008] Furthermore, a through hole is provided at the center of the fixed disk, and the first output shaft passes through the through hole to be connected to the first fan. The provision of the through hole facilitates the first output shaft to pass through the fixed disk and be connected to the first fan, thereby achieving simultaneous connection of the first output shaft with the fixed disk and the first fan.

[0009] Furthermore, a first engaging structure is provided at the edge of the fixed disk, and a second engaging structure is provided at the edge of the clutch ring close to one end of the fixed disk, and the second engaging structure can be selectively engaged with or separated from the first engaging structure.

[0010] Further, the fixed plate includes a chassis, a folded edge is provided at the edge of the chassis, the first engaging structure is provided on the folded edge, the first engaging structure includes a first inserting tooth and a first slot, the second engaging structure includes a second inserting tooth and a second slot, the second inserting tooth is inserted into the first slot, and the first inserting tooth is inserted into the second slot. The first inserting tooth cooperates with the first slot, and the second inserting tooth cooperates with the second slot, which has a guiding and positioning function for the engagement of the clutch ring and the fixed plate, and increases the firmness of the engagement between the two.

[0011] Furthermore, the clutch ring is set as a cylindrical structure, and internal teeth are set on the inner surface of the clutch ring, and external teeth are set on the outer surface of the connection structure, and the internal teeth and the external teeth are meshed. The cylindrical clutch ring cooperates with the connection structure and wraps the motor body inside, so as to avoid the connection structure and the clutch structure occupying a large space, save the internal space of the shell, and make the fresh air device more compact. In addition, the internal teeth and the external teeth are meshed, so that when the clutch ring rotates, the connection structure is driven to rotate, and slipping between the two is avoided.

[0012] Furthermore, the connection structure includes an outer gear ring and a sleeve, the sleeve is connected to the side of the outer gear ring away from the fixed disk, a second fan is installed on the sleeve, the outer gear ring is installed on the inner side of the clutch ring, external teeth are arranged on the outer surface of the outer gear ring, and the outer gear ring is meshed with the clutch ring.

[0013] Furthermore, an end side surface is provided at one end of the outer gear ring away from the fixed disk, the shaft sleeve is provided on the end side surface, and the shaft sleeve extends in a direction away from the fixed disk.

[0014] Furthermore, the body of the motor is configured as a cylindrical structure, the body includes a first end face, a circumferential side face and a second end face, the first output shaft extends outwardly from one side of the first end face, the first fan is disposed on one side of the first end face, and the second fan is disposed on one side of the second end face. The two fans are respectively located on both sides of the motor, so that air can enter from both sides of the fresh air device and space can be saved.

[0015] Compared with the prior art, the fresh air device of the present invention has the following advantages:

[0016] The first fan and the second fan are respectively located at the two ends of the motor, thereby forming two fresh air inlets, increasing the fresh air intake volume. At the same time, the two fans are controlled by one motor through a connecting structure and a clutch structure, so that the first fan and the second fan can not only be controlled simultaneously, but also can be controlled separately, thereby increasing the fresh air intake volume while saving space, making the fresh air device more compact as a whole.

[0017] The present invention also provides an air conditioner, comprising the fresh air device described above, wherein the air conditioner is provided with a shell and an evaporator, wherein the fresh air device and the evaporator are located inside the shell, and the fresh air device is arranged at the lower part of the evaporator.

[0018] The advantages of the air conditioner and the above-mentioned fresh air device over the prior art are the same, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the fresh air device according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the transmission process according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure when the motor according to an embodiment of the present invention is configured as a dual-axis motor;

[0022] Figure 4 This is a schematic diagram of the structure of the fixed disk according to an embodiment of the present invention;

[0023] Figure 5 It is a schematic axial view of the fixing plate according to the embodiment of the present invention from another viewing angle;

[0024] Figure 6 A front view of a fixing plate according to an embodiment of the present invention;

[0025] Figure 7This is a schematic diagram of the connection structure according to an embodiment of the present invention;

[0026] Figure 8 It is a schematic axial view of the connection structure according to an embodiment of the present invention from another viewing angle;

[0027] Fig. 9 It is a right view of the connection structure according to an embodiment of the present invention;

[0028] Fig.10 It is a schematic diagram of the clutch ring structure according to an embodiment of the present invention;

[0029] Fig.11 It is a schematic axial view of the clutch ring according to the embodiment of the present invention from another viewing angle;

[0030] Fig.12 This is a schematic diagram of the structure of the fresh air device after installation according to an embodiment of the present invention;

[0031] Fig.13 It is a schematic diagram of the structure of the air conditioner according to an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1-motor, 11-first output shaft, 12-second output shaft, 13-body, 14-first end surface, 15-circumferential side surface, 16-second end surface, 2-first fan, 3-second fan, 4-clutch structure, 41-fixed plate, 42-clutch ring, 411-chassis, 412-mounting cylinder, 413-folding edge, 414-first inserting tooth, 415-first slot, 416-second accommodating chamber, 421-second inserting tooth, 422-second slot, 423-inner teeth, 5-connecting structure, 51-outer gear ring, 511-outer teeth, 512-end side surface, 513-first accommodating chamber, 52-sleeve, 521-mounting portion, 522-connecting portion, 6-housing, 61-evaporator, 62-fresh air outlet, 63-fresh air inlet, 64-fresh air housing DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] like Figures 1 to 13 As shown, the present invention provides a fresh air device for installation at the bottom of a cabinet air conditioner, which introduces a fresh air function while ensuring that the air conditioner can operate normally.

[0036] Specifically, Figures 1 to 3 As shown, the fresh air device includes a motor 1, a first fan 2 and a second fan 3. The first fan 2 and the second fan 3 are respectively located at two ends of the motor 1, and the motor 1 controls the two fans to rotate separately or simultaneously.

[0037] The motor 1 includes a main body 13 and a first output shaft 11, a first fan 2 is installed on the first output shaft 11, a connecting structure 5 is installed at one end of the main body 13 of the motor 1 away from the first output shaft 11, and the connecting structure 5 is connected to the second fan 3, so that the first fan 2 and the second fan 3 are respectively located at two ends of the motor 1, thereby forming two fresh air inlets to increase the fresh air intake.

[0038] The first output shaft 11 is also connected to a clutch structure 4, which drives the clutch structure 4 to rotate. The clutch structure 4 can selectively drive the connection structure 5 to rotate, so that the first fan 2 and the second fan 3 can be controlled not only simultaneously but also separately.

[0039] As part of an embodiment of the present invention, the motor 1 can also be configured as a dual-axis motor, with a second output shaft 12 being provided on the end of the main body 13 opposite to the first output shaft 11, and the connecting structure 5 being sleeved on the second output shaft 12, but a gap is left between the inner surface of the connecting structure 5 and the second output shaft 12, so that the second output shaft 12 does not contact the connecting structure 5 when rotating.

[0040] This embodiment realizes separate or independent control of two fans through one motor, which is not only applicable to dual-axis motors, but also to single-axis single machines. It increases the fresh air intake while saving space, making the fresh air device more compact as a whole.

[0041] like Figure 1 As shown, further, the clutch structure 4 includes a fixed disk 41 and a clutch ring 42, the fixed disk 41 is connected to the first output shaft 11, and the fixed disk 41 is driven to rotate by the first output shaft 11, and the clutch ring 42 is connected to the connection structure 5, and the clutch ring 42 can be selectively engaged with or separated from the fixed disk 41. When the clutch ring 42 is engaged with the fixed disk 41, the fixed disk 41 drives the clutch ring 42 to operate, and the clutch ring 42 drives the connection structure 5 to operate; when the clutch ring 42 is separated from the fixed disk 41, the clutch ring 42 cannot drive the connection structure to operate, so that the clutch ring 42 of the clutch structure 4 can selectively drive the connection structure 5 to operate, thereby realizing simultaneous or separate control of the first fan 2 and the second fan 3.

[0042] Preferably, the clutch ring 42 is connected to a control unit, and the control unit controls the movement of the clutch ring 42 to achieve engagement or separation of the clutch ring 42 and the fixed plate 41 .

[0043] When it is necessary to guide the fresh air intake on one side of the first fan 2 alone, the control unit controls the clutch ring 42 and the fixed disk 41 to separate, and the first output shaft 11 drives the fixed disk 41 and the first fan 2 to rotate. Since the clutch ring 42 and the fixed disk 41 are disengaged, the clutch ring 42 does not rotate at this time, so that the connecting structure 5 and the second fan 3 remain stationary, thereby realizing the separate control of the first fan 2 and the second fan 3.

[0044] When the air intake needs to be increased and the first fan 2 and the second fan 3 guide the air intake at the same time, the control unit controls the clutch ring 42 and the fixed disk 41 to engage, and the first output shaft 11 drives the fixed disk 41 and the first fan 2 to rotate. At the same time, the fixed disk 41 drives the clutch ring 42 to rotate, the clutch ring 42 drives the connecting structure 5 to rotate, and the connecting structure 5 drives the second fan 3 to rotate, thereby realizing the simultaneous rotation of the first fan 2 and the second fan 3.

[0045] like Figures 4 to 6 and Figures 10-11 As shown, further, a first engaging structure is provided on the edge of the fixed disk 41, and a second engaging structure is provided on the edge of the clutch ring 42 near one end of the fixed disk 41. The first engaging structure and the second engaging structure are provided as mutually matching tooth slot structures, and the second engaging structure can be selectively engaged or separated with the first engaging structure. Furthermore, the first engaging structure includes a first tooth 414 and a first slot 415, and the second engaging structure includes a second tooth 421 and a second slot 422. When the clutch ring 42 and the fixed disk 41 are engaged, the second tooth 421 is inserted into the first slot 415, and the first tooth 414 is inserted into the second slot 422, so that the clutch ring 42 and the fixed disk 41 are firmly engaged.

[0046] Furthermore, the body 13 of the motor 1 is configured as a cylindrical structure, the body 13 includes a first end face 14, a circumferential side face 15 and a second end face 16, the first output shaft 11 extends outwardly from one side of the first end face 14, the first fan 2 is arranged on one side of the first end face 14, and the second fan 3 is arranged on one side of the second end face 16. Preferably, when the motor 1 is configured as a dual-axis motor, the second output shaft 12 extends outwardly from one side of the second end face 16.

[0047] The fixing plate 41 includes a circular chassis 411, which is wrapped around the first end face 14 of the motor 1. A folded edge 413 is also provided on the edge of the chassis 411, which protrudes and extends in a direction close to the second end face 16, and a first engaging structure is provided on the folded edge 413. There is also a through hole in the center of the chassis 411, and the first output shaft 11 passes through the through hole and is connected to the first fan 2. Preferably, a mounting cylinder 412 passing through the through hole is provided in the center of the chassis 411, and a second accommodating cavity 416 is formed at the center of the mounting cylinder 412. The second accommodating cavity 416 is provided as a hollow structure with openings at both ends, so as to facilitate the first output shaft 11 to pass through. The mounting cylinder 412 not only protects the first output shaft 11, but also increases the contact area between the chassis 411 and the first output shaft 11, thereby increasing the connection stability between the two.

[0048] Furthermore, the clutch ring 42 is configured as a cylindrical structure, and internal teeth 423 are provided on the inner surface of the clutch ring 42, and external teeth 511 are provided on the outer surface of the connecting structure 5. The internal teeth 423 on the inner surface of the clutch ring 42 and the external teeth 511 on the outer surface of the connecting structure 5 are meshed, so that when the clutch ring 42 rotates, the connecting structure 5 is driven to rotate, thereby avoiding slipping between the two.

[0049] like Figure 1 and Figures 7 to 9 As shown, further, the connecting structure 5 includes an outer gear ring 51 and a sleeve 52. The outer gear ring 51 is installed on the inner side of the clutch ring 42. The outer gear ring 51 is configured as a cylindrical structure. The end of the outer gear ring 51 close to the fixed disk 41 is configured as an open structure. A first accommodating chamber 513 is formed in the space enclosed by the interior of the outer gear ring 51 and the fixed disk 41. The first accommodating chamber 513 accommodates the body 13 of the motor, thereby avoiding the connecting structure 5 and the clutch structure 4 from occupying a large space, saving the internal space of the shell, and making the fresh air device more compact.

[0050] The shaft sleeve 52 is connected to the side of the outer gear ring 51 away from the fixed plate 41, and the second fan 3 is installed on the shaft sleeve 52. The outer gear ring 51 drives the second fan 3 to operate through the shaft sleeve 52. Preferably, the outer gear ring 51 and the shaft sleeve 52 can be integrally arranged to increase the connection stability between the shaft sleeve 52 and the outer gear ring 51.

[0051] The outer teeth 511 are arranged on the outer surface of the outer gear ring 51 , so that the outer gear ring 51 is meshed with the clutch ring 42 wrapped around the outer side of the outer gear ring 51 , so that the clutch ring 42 drives the outer gear ring 51 to rotate.

[0052] An end side surface 512 is provided at one end of the outer gear ring 51 away from the fixed disk 41. The end side surface 512 is parallel to the bottom plate 411 of the fixed disk 41. The end side surface 512 is wrapped around the second end surface 16 of the motor 1, so that the clutch structure 4 and the connecting structure 5 integrally wrap the body 13 of the motor 1 to save space.

[0053] Furthermore, the shaft sleeve 52 is disposed on the end side surface 512 , and the shaft sleeve 52 extends in a direction away from the fixed disk 41 . The shaft sleeve 52 may be configured as a hollow structure or a solid shaft structure.

[0054] In some embodiments, when the motor 1 is configured as a single-axis motor, the sleeve 52 can be configured as a hollow or solid structure, and the outer circumferential side of the sleeve 52 is connected to the second fan 3; when the motor 1 is configured as a dual-axis motor, the sleeve 52 is configured as a hollow structure, and the inner diameter of the sleeve 52 is larger than the outer diameter of the second output shaft 12. The interior of the sleeve 52 is used to accommodate the second output shaft 12, so that the second output shaft does not occupy a large space. The sleeve arrangement structure in this embodiment is compact and has a wide range of applications.

[0055] Furthermore, the shaft sleeve 52 includes a mounting portion 521 and a connecting portion 522, wherein the mounting portion 521 is connected to the end side surface 512, and the connecting portion 522 is connected to a side of the mounting portion 521 away from the end side surface 512, and the second fan 3 is installed on the connecting portion 522. On the one hand, the connecting structure 5 can drive the second fan 3 to rotate, and on the other hand, the second fan 3 is installed on the connecting structure 5 through the connecting portion 522, so that a certain distance is defined between the second fan 3 and the end side surface 512 by the mounting portion 521, thereby avoiding friction and collision between the second fan 3 and the end side surface 512 when the second fan 3 is running, avoiding wear between components, and improving the operating stability of the equipment.

[0056] As part of the embodiment of the present invention, a method for controlling air intake of a fresh air device is also provided, which specifically includes the following steps:

[0057] Step S100: the control unit of the fresh air device receives a fresh air intake instruction;

[0058] The fresh air command includes two situations: single-side air intake or double-side air intake. Users can select different air intake modes according to the indoor temperature and indoor air cleanliness.

[0059] Furthermore, when air is introduced from one side, the first fan 2 is operated and the air is guided by the first fan 2; when air is introduced from both sides, the second fan 2 and the second fan 3 are operated simultaneously and the two fans guide the air to be introduced from both sides simultaneously.

[0060] Step S200: the fresh air device controls the operation of the fan at the corresponding part according to the received air intake command, and starts to introduce fresh air.

[0061] Step S201: When the control unit receives a single-sided air intake instruction, it controls the motor 1 to operate. At the same time, the control unit controls the clutch ring 42 to move to the right, the clutch ring 42 and the fixed plate 41 are disengaged, the motor 1 drives the first fan 2 to operate, and the fresh air device realizes single-sided air intake.

[0062] Step S202: When the control unit receives the double-sided air intake instruction, it controls the motor 1 to operate. At the same time, the control unit controls the clutch ring 42 to move to the left, the clutch ring 42 and the fixed plate 41 engage, the motor 1 drives the first fan to operate, and drives the second fan 3 to operate at the same time, and the fresh air device realizes double-sided air intake.

[0063] Step S300: complete the introduction of fresh air and stop the operation of motor 1.

[0064] As part of the embodiments of the present invention, Figure 1 and Figures 12-13 As shown, this embodiment also provides an air conditioner, including the fresh air device described above, the air conditioner also includes an outer shell 6 and an evaporator 61 arranged inside the outer shell 6, and the fresh air device is arranged at the lower part of the evaporator 61, so that although the fresh air device and the evaporator 61 are in the same outer shell 6, it does not affect the normal cooling / heating function of the air conditioner.

[0065] In some embodiments, the fresh air device further includes a fresh air housing 64, the motor 1 and two fans of the fresh air device are installed inside the fresh air housing 64, and two fresh air filters are arranged at the positions corresponding to the first fan 2 and the second fan 3 on the fresh air housing 64, for filtering the fresh air intake introduced on both sides. Further, fresh air inlets 63 are arranged at the positions corresponding to the two fresh air filters on the housing 6 of the air conditioner, and a fresh air outlet 62 is arranged at the top of the fresh air device, and the fresh air outlet 62 is arranged at a position close to the evaporator 61, and an outlet connected to the fresh air outlet 62 is arranged on the housing 6 of the air conditioner, so that the fresh air entering through the fresh air device can be discharged through the fresh air outlet 62 and the outlet.

[0066] The advantages of the air conditioner and the above-mentioned fresh air device over the prior art are the same, which will not be repeated here.

[0067] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A fresh air device, comprising a motor (1), a first fan (2) and a second fan (3), characterized in that: The motor (1) comprises a body (13) and a first output shaft (11), a first fan (2) being mounted on the first output shaft (11), a connecting structure (5) being mounted on an end of the motor (1) away from the first output shaft (11), the connecting structure (5) being connected to the second fan (3), the first output shaft (11) being further connected to a clutch structure (4), the clutch structure (4) being able to selectively drive the connecting structure (5) to operate, The clutch structure (4) comprises a fixed disk (41) and a clutch ring (42); the fixed disk (41) is connected to the first output shaft (11); the clutch ring (42) can selectively engage with or disengage from the fixed disk (41); the clutch ring (42) is connected to the connecting structure (5); the clutch ring (42) can selectively drive the connecting structure (5) to operate; A through hole is provided at the center of the fixing plate (41), and the first output shaft (11) passes through the through hole and is connected to the first fan (2). A first engaging structure is provided on the edge of the fixed disk (41), and a second engaging structure is provided on the edge of the clutch ring (42) close to one end of the fixed disk (41), wherein the second engaging structure can be selectively engaged with or separated from the first engaging structure.

2. The fresh air device according to claim 1, characterized in that: The fixed plate (41) comprises a base plate (411), a folded edge (413) is arranged at the edge of the base plate (411), the first engaging structure is arranged on the folded edge (413), the first engaging structure comprises a first inserting tooth (414) and a first slot (415), the second engaging structure comprises a second inserting tooth (421) and a second slot (422), the second inserting tooth (421) is inserted into the first slot (415), and the first inserting tooth (414) is inserted into the second slot (422).

3. The fresh air device according to claim 1, characterized in that: The clutch ring (42) is configured as a cylindrical structure, internal teeth (423) are provided on the inner surface of the clutch ring (42), and external teeth (511) are provided on the outer surface of the connection structure (5), and the internal teeth (423) and the external teeth (511) are meshed.

4. The fresh air device according to claim 1 or 3, characterized in that: The connection structure (5) comprises an outer gear ring (51) and a shaft sleeve (52); the shaft sleeve (52) is connected to a side of the outer gear ring (51) away from the fixed disk (41); a second fan (3) is mounted on the shaft sleeve (52); the outer gear ring (51) is mounted on the inner side of the clutch ring (42); external teeth (511) are provided on the outer surface of the outer gear ring (51); and the outer gear ring (51) and the clutch ring (42) are meshed.

5. The fresh air device according to claim 4, characterized in that: An end side surface (512) is provided at one end of the outer gear ring (51) away from the fixed disk (41), the shaft sleeve (52) is provided on the end side surface (512), and the shaft sleeve (52) extends in a direction away from the fixed disk (41).

6. The fresh air device according to claim 1, characterized in that: The body (13) of the motor (1) is arranged as a cylindrical structure, the body (13) comprising a first end face (14), a circumferential side face (15) and a second end face (16), the first output shaft (11) protrudes outwardly from one side of the first end face (14), the first fan (2) is arranged on one side of the first end face (14), and the second fan (3) is arranged on one side of the second end face (16).

7. An air conditioner, characterized in that: Comprising the fresh air device according to any one of claims 1 to 6, the air conditioner is provided with a casing (6) and an evaporator (61), the fresh air device and the evaporator (61) are located inside the casing (6), and the fresh air device is arranged at the bottom of the evaporator (61).

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