Air conditioner

Abstract

The present invention discloses an air conditioner, comprising: a main unit, a receiving bin is provided at the lower part of the main unit; a sub-unit, movably arranged in the receiving bin; and a fresh air device, arranged in the receiving bin, the fresh air device has a main housing and a blower arranged in the main housing, the main housing is formed with a fresh air inlet and a fresh air outlet, the fresh air inlet is used for communicating with a fresh air pipe, the fresh air outlet is used for communicating with the room interior, the blower has an air inlet and an air outlet, the air inlet of the blower is arranged facing the fresh air inlet, and the air outlet of the blower is communicated with the fresh air outlet. By arranging the air inlet of the blower facing the fresh air inlet, the fresh air input from the fresh air inlet directly flows towards the blower, thereby reducing the air resistance at the air inlet of the blower and increasing the air volume of the blower.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, and particularly to an air conditioner. Background Art

[0002] In existing air conditioners, in order to improve indoor air quality, some air conditioners are provided with a fresh air device. Since there is usually a height difference between the outdoor fresh air duct and the air inlet of the fresh air device, when the fresh air device intakes air, the fresh air enters from the side of the fresh air inlet, and the intake direction of the fresh air flow is perpendicular to the axial direction of the air inlet of the fresh air device. When the air flow enters the air inlet of the fan, it will generate a turning, resulting in the formation of eddy currents at the air inlet of the fan, increasing the wind resistance, and further reducing the flow rate of the fresh air device. Summary of the Invention

[0003] The main object of the present invention is to propose an air conditioner, aiming to improve the problem of small air volume of the existing fresh air device.

[0004] To achieve the above object, the air conditioner proposed by the present invention includes:

[0005] A main unit, a receiving chamber is provided at the lower part of the main unit;

[0006] A sub-unit, movably arranged in the receiving chamber; and

[0007] A fresh air device, arranged in the receiving chamber, the fresh air device has a main housing and a fan arranged in the main housing, the main housing is formed with a fresh air inlet and a fresh air outlet, the fresh air inlet is used to communicate with the fresh air duct, the fresh air outlet is used to communicate with the room, the fan has an air inlet and an air outlet, the air inlet of the fan is arranged towards the fresh air inlet, and the air outlet of the fan communicates with the fresh air outlet.

[0008] Optionally, the main unit has a back plate, the fresh air inlet communicates with the outside of the back plate, and the air inlet of the fan is arranged towards the back plate.

[0009] Optionally, the fan is a centrifugal fan, and the axial direction of the fan is perpendicular to the height direction of the main unit.

[0010] Optionally, the fresh air device is located above the sub-unit.

[0011] Optionally, the air conditioner further includes:

[0012] A diversion pipe, detachably arranged outside the main unit, the upper end of the diversion pipe is connected to the fresh air inlet, and the lower end of the diversion pipe is used to communicate with the fresh air duct.

[0013] Optionally, the fresh air device further includes:

[0014] The purification module is disposed inside the main housing and at the air inlet of the blower.

[0015] Optionally, a first air damper is provided at the fresh air inlet, and an internal circulation inlet communicating with the air inlet of the blower and the outside of the main body is formed in the main housing, and a second air damper is provided at the internal circulation inlet;

[0016] The fresh air device has an internal circulation mode. In the internal circulation mode, the first air damper is closed and the second air damper is opened.

[0017] Optionally, the purification module has a windward surface facing the fresh air inlet, and a first chamber is formed between the windward surface of the purification module and the inner wall of the main housing, and the fresh air inlet and the internal circulation inlet communicate with the first chamber respectively.

[0018] Optionally, the main housing forms a first opening communicating with the air inlet of the blower and the fresh air inlet, a second opening communicating with the air outlet of the blower and the fresh air inlet, and an exhaust inlet communicating with the air inlet of the blower and the outside of the main body. A first air damper is provided at the first opening, a third air damper is provided at the exhaust inlet, and a fourth air damper for switching between the fresh air outlet and the second opening is provided on the main housing;

[0019] The fresh air device has an exhaust mode. In the exhaust mode, the third air damper is opened, the first air damper is closed, the fourth air damper opens the second opening and closes the fresh air outlet.

[0020] Optionally, the purification module has a leeward surface facing the air inlet of the blower, and a second chamber is formed between the leeward surface of the purification module and the air inlet of the blower, and the exhaust inlet communicates with the second chamber.

[0021] Optionally, the purification module has a windward surface facing the fresh air inlet, and a first chamber is formed between the windward surface of the purification module and the inner wall of the main housing, and the first opening communicates with the fresh air inlet and the first chamber;

[0022] The main housing forms an internal circulation inlet communicating with the first chamber and the outside of the main body, and a second air damper is provided at the internal circulation inlet; the fresh air device has an internal circulation mode. In the internal circulation mode, the first air damper and the third air damper are closed, the second air damper is opened, the fourth air damper opens the fresh air outlet and closes the second opening.

[0023] The technical solution of the present invention makes the fresh air input from the fresh air inlet directly flow to the blower by facing the air inlet of the blower towards the fresh air inlet, thereby reducing the wind resistance at the air inlet of the blower and increasing the air volume of the blower. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0025] Figure 1 It is a schematic structural diagram of an embodiment on the air inlet side of the air conditioner of the present invention;

[0026] Figure 2 It is a schematic structural diagram of an embodiment on the leeward side of the air conditioner of the present invention;

[0027] Figure 3 It is a schematic structural diagram of an embodiment in the open state of the side door of the air conditioner of the present invention;

[0028] Figure 4 It is a schematic structural diagram of an embodiment in the separated state of the slave unit and the master unit of the present invention;

[0029] Figure 5 It is a schematic structural diagram of an embodiment in the open state of the accommodation bin of the present invention;

[0030] Figure 6 It is a schematic structural diagram of an embodiment in the state where the fresh air device is located in the accommodation bin of the present invention;

[0031] Figure 7 It is a schematic structural diagram of an embodiment in the state where the air conditioner of the present invention is provided with a diversion pipe;

[0032] Figure 8 It is a schematic structural diagram of an embodiment of the fresh air device of the present invention;

[0033] Figure 9 It is a schematic structural diagram of an embodiment on the air inlet side of the fresh air device of the present invention;

[0034] Figure 10 It is a schematic structural diagram of an embodiment on the air outlet side of the fresh air device of the present invention;

[0035] Figure 11 It is a schematic structural diagram of an embodiment of the purification module of the present invention;

[0036] Figure 12 For Figure 10 exploded view;

[0037] Figure 13 It is a schematic structural diagram of an embodiment in the fresh air mode of the present invention;

[0038] Figure 14Structural schematic diagram of an embodiment in the internal circulation mode of the present invention;

[0039] Figure 15 Structural schematic diagram of an embodiment in the exhaust mode of the present invention.

[0040] Explanation of the reference numerals in the drawings:

[0041]

[0042]

[0043] The realization, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0047] The present invention provides an air conditioner, and the air conditioner can be a floor-standing air conditioner.

[0048] Please refer to Figure 1 、 Figure 2 and Figure 3 In an embodiment, the air conditioner includes:

[0049] The main unit 10, with a receiving bin 17 provided at the lower part of the main unit 10; the main unit 10 forms the mother machine of the air conditioner, and the receiving bin 17 is arranged near the lower part of the main unit 10. Inside the main unit 10, a wind wheel for driving the airflow to flow and a heat exchanger for heat exchange can be arranged. The wind wheel can be a cross-flow wind wheel, an axial-flow wind wheel, an inclined-flow wind wheel, a centrifugal wind wheel, etc. The heat exchanger can be an evaporator, a heater, or a combination of an evaporator and a heater. The main unit 10 can also be provided with an outdoor unit of the air conditioner, and the outdoor unit of the air conditioner is connected to the main unit 10 through a heat exchange pipe. A main air outlet 11 can also be arranged on the main unit 10. The airflow enters the main unit 10 under the action of the wind wheel, and after heat exchange by the heat exchanger, it is output from the main air outlet 11 to realize the output of the heat exchange airflow.

[0050] A fresh air device 30 is arranged in the receiving bin 17. The fresh air inlet 311 and the fresh air outlet 39 of the fresh air device 30 are respectively communicated with the outside of the main unit 10; the fresh air device 30 is arranged inside the main unit 10. The fresh air inlet 311 is used to communicate with a fresh air pipe 50, and the fresh air outlet 39 is used to input fresh air into the room. An external fresh air inlet 13 corresponding to the fresh air inlet 311 and an external air outlet 14 corresponding to the fresh air outlet 39 can be arranged on the main unit 10. The fresh air pipe 50 can be fixedly connected to the external fresh air inlet 13 to realize the input of fresh air.

[0051] A sub-unit 20 is movably arranged in the receiving bin 17. The main unit 10 is used to provide a receiving space for the sub-unit 20, so that the sub-unit 20 can form an integral structure with the main unit 10, or can be removed from the main unit 10 to operate synchronously with the main unit 10, or the sub-unit 20 can operate independently at a position with a certain distance from the main unit 10. Inside the sub-unit 20, a wind wheel for driving the airflow to flow and a heat exchanger for heat exchange can be arranged. The wind wheel can be a cross-flow wind wheel, an axial-flow wind wheel, an inclined-flow wind wheel, a centrifugal wind wheel, etc. The heat exchanger can be an evaporator, a heater, or a combination of an evaporator and a heater.

[0052] Please refer to Figure 4 、 Figure 5 and Figure 6 , since the fresh air pipe 50 is usually arranged on the side of the air conditioner, in order to reduce the wind resistance generated when fresh air enters the fresh air device 30 from the fresh air pipe 50. When installing the fresh air device 30, the axis of the wind wheel 361 of the fresh air device 30 can be perpendicular to the height direction of the main unit 10, that is, the air inlet of the wind wheel 361 of the fresh air device 30 faces the side of the main unit 10, so that the fresh air inlet 311 can correspond to the position of the external fresh air inlet 13 on the main unit 10 and reduce the wind resistance generated when the airflow enters the fresh air device 30.

[0053] Please refer to Figure 7, the outdoor fresh air inlet 13 on the host 10 is used to connect the outdoor fresh air duct 50. When the positions of the fresh air duct 50 and the outdoor fresh air inlet 13 do not correspond, optionally, the air conditioner further includes a diversion duct 40. The diversion duct 40 is detachably arranged outside the host 10. The diversion duct 40 can be used to connect the fresh air duct 50. The diversion duct 40 is formed with a fresh air passage 41 and a first port 42 and a second port 43 communicating with the fresh air passage 41. The fresh air passage 41 is used to form a space for fresh air to flow. The first port 42 communicates with the fresh air inlet 311, and the second port 43 can communicate with the fresh air duct 50.

[0054] After the diversion duct 40 is installed on the host 10, it can be in a fixed state with the host 10, or the diversion duct 40 can be rotatably arranged with the outdoor fresh air inlet 13 as the center to adjust the angle and position of the diversion duct 40 according to the position of the fresh air duct 50, so as to facilitate the adaptation of the diversion duct 40 to the fresh air duct 50.

[0055] One end of the diversion duct 40 close to the outdoor fresh air inlet 13 can be bent to form an arc-shaped diversion surface on the inner surface of the fresh air passage 41 at the end close to the outdoor fresh air inlet 13, so as to divert the fresh air in the fresh air passage 41 towards the fresh air inlet 311, avoid generating eddy currents at the position close to the outdoor fresh air inlet 13, reduce the air inlet resistance, and increase the air inlet volume and air inlet speed.

[0056] Taking the example that the fresh air duct 50 is arranged close to the bottom of the host 10, the upper end of the diversion duct 40 forms the first port 42, and the lower end of the diversion duct 40 forms the second port 43. The first port 42 and the second port 43 respectively communicate with the fresh air passage 41. The diversion duct 40 is used to form a passage for guiding fresh air from bottom to top, so that the outdoor fresh air inlet 13 of the host 10 can be adapted to the fresh air duct 50. Since the fresh air duct 50 is arranged outside the host 10 and does not occupy the internal space of the accommodation bin 17, a larger accommodation space can be provided for the slave unit 20, and thus the volume of the slave unit 20 can be increased according to needs.

[0057] Since the outdoor fresh air duct 50 is usually arranged close to the bottom of the host 10, the diversion duct 40 can be used to form a passage connecting the fresh air inlet 311 and the fresh air duct 50, and it is not necessary to modify the internal passage of the host 10 to adapt to the position of the fresh air duct 50. When the fresh air device 30 cooperates with the fresh air duct 50, it is not necessary to change the internal structure of the accommodation bin 17, which helps to improve the applicability of the air conditioner.

[0058] Please refer to Figure 8 and Figure 9, the fresh air device 30 includes a main housing 31 and a blower 36 disposed within the main housing 31. The main housing 31 is formed with a fresh air inlet 311 and a fresh air outlet 39. The main housing 31 serves as the outer shell of the fresh air device 30, and a cavity is formed inside the main housing 31. The blower 36 is disposed within the cavity. The fresh air inlet 311 and the fresh air outlet 39 are respectively in communication with the cavity. When the diversion pipe 40 is provided, the first port 42 of the diversion pipe 40 penetrates through the outer fresh air outlet 13 and is in communication with the fresh air outlet 39, so as to change the assembly position of the fresh air device 30 and the outdoor fresh air pipe 50, and to enable the installation position of the fresh air device 30 to have more selectable positions without changing the internal structure of the main unit 10.

[0059] Please refer to Figure 11 and Figure 12 , the blower 36 has an air inlet and an air outlet. The air inlet of the blower 36 is arranged facing the fresh air inlet 311, and the air outlet of the blower 36 is in communication with the fresh air outlet 39. The air flow enters the main housing 31 from the fresh air inlet 311 and flows towards the air inlet of the blower 36. The air flow is output through the air outlet of the blower 36 and is output to the room from the fresh air outlet 39.

[0060] Please refer to Figure 13 , the fresh air inlet 311 is used to connect to the fresh air pipe 50. When the blower 36 operates, a negative pressure state is formed at the fresh air inlet 311, and outdoor fresh air enters the main housing 31 from the fresh air pipe 50 and is output from the fresh air outlet 39.

[0061] Please refer to Figure 11 and Figure 13, the fresh air inlet 311 faces the air inlet of the blower 36. The plane where the fresh air inlet 311 is located can be parallel to the plane where the air inlet of the blower 36 is located, so that the airflow input from the inlet of the fresh air machine 36 can directly enter the air inlet of the blower 36. By reducing the turning of the fresh air before entering the blower 36, the air resistance at the air inlet of the blower 36 is reduced, thereby increasing the air intake. The blower 36 forms an axial air intake and circumferential air outlet structure. The fresh air outlet 39 can be arranged at the circumferential position of the blower 36 to reduce the air outlet resistance. By reducing the air resistance at the air inlet of the blower 36, the intake noise can be effectively reduced. Since the fresh air inlet 311 directly faces the air inlet of the blower 36 and is outside the circumference of the blower 36, there is no need to reserve space and channels for connecting the fresh air pipe 50, and thus there is no need to reserve space for installing the fresh air pipe 50 in the accommodation chamber 17, enabling a relatively large space for accommodating the sub-machine 20 to be formed in the accommodation chamber 17. When the sub-machine 20 is placed in the accommodation chamber, the requirements for the installation position and installation angle of the sub-machine 20 can be relatively reduced, thereby improving the adaptability between the sub-machine 20 and the main machine 10. The internal shape of the accommodation chamber 17 can be adapted to the outer shape of the sub-machine 20, so that when the sub-machine 20 is located in the accommodation chamber 17, unnecessary misalignment and displacement are not likely to occur, thereby avoiding vibration noise generated by the vibration of the sub-machine 20 caused by the operation of the main machine 10 or the fresh air device 30.

[0062] Optionally, the main machine 10 has a back panel 12. The back panel 12 can be the front side of the main machine 10. The fresh air inlet 311 of the fresh air device 30 communicates with the outside of the back panel 12. The outside air inlet can be arranged on the back panel 12. The air inlet of the blower 36 of the fresh air device 30 faces the back panel 12. The plane where the fresh air inlet 311 of the fresh air device 30 is located can be parallel to the plane where the back panel 12 is located. The external fresh air pipe 50 can be directly connected to the outside fresh air outlet 13 on the back panel 12. When the main machine 10 has the back panel 12, the outside fresh air outlet 13 on the main machine 10 is arranged on the back panel 12, and the plane where the air inlet of the blower 36 is located is parallel to the plane where the back panel 12 is located. Taking the blower 36 of the fresh air device 30 as a centrifugal blower 36 as an example, the axis of the blower 36 is perpendicular to the plane where the back panel 12 is located, so that the air inlet of the blower 36 is parallel to the plane where the back panel 12 is located, thereby reducing the air resistance at the air inlet.

[0063] In one embodiment, the fresh air device 30 is located above the slave unit 20 and is disposed near the top of the accommodation bin 17 to prevent the fresh air device 30 from affecting the movement of the slave unit 20. The fresh air inlet 311 of the fresh air device 30 faces the back plate 12 of the main unit 10, so that the fresh air inlet 311 can be directly connected to the fresh air pipe 50 without occupying the internal space of the accommodation bin 17, thereby increasing the space for placing the slave unit 20. When the flow guide pipe 40 is provided, the flow guide pipe 40 can adapt the fresh air inlet 311 and the fresh air pipe 50 to each other from the outside to realize fresh air input without changing the internal space layout of the accommodation bin 17. Since the existing fresh air pipes are usually arranged near the bottom end of the air conditioner, the existing fresh air device 30 is usually installed at the bottom end of the air conditioner to be adapted to the fresh air pipe. If the fresh air device 30 is arranged at the bottom of the main unit 10, it will occupy the bottom space of the accommodation bin 17, resulting in a reduction in the volume of the slave unit 20. When the slave unit 20 is removed from the accommodation bin 17, the fresh air device 30 is usually fixed on the inner wall of the main unit 10, which further increases the distance between the slave unit 20 and the horizontal plane. The formed height difference will affect the outward movement of the slave unit 20, and thus it is impossible to automatically remove the slave unit 20 from the accommodation bin 17. Or, a structure for lifting and moving the slave unit 20 needs to be additionally provided on the main unit 10 or the slave unit 20, making the structure of the air conditioner complex.

[0064] Since the fresh air device 30 is arranged in the accommodation bin 17 and above the slave unit 20, when the slave unit 20 is removed from the accommodation bin 17, the fresh air device 30 does not block the slave unit 20, facilitating the movement of the slave unit 20. Since the fresh air inlet 311 of the fresh air device 30 faces the air inlet of the blower 36, the fresh air inlet 311 can be directly arranged on the back plate 12 of the main unit 10 without reserving the space required at the fresh air inlet 311 in the accommodation bin 17 below the main housing 31, which can simplify the internal space layout of the accommodation bin 17. When the flow guide pipe 40 is provided, the fresh air inlet 311 and the fresh air pipe 50 can be adapted through the flow guide pipe 40, and thus the position of the fresh air pipe 50 does not need to be changed to realize fresh air input. The fresh air outlet 39 can be directly located on the back plate 12, and the external air outlet 14 is arranged in the middle of the main unit 10 to realize middle air outlet. Since the fresh air device 30 itself is located near the middle of the main unit 10, the length of the fresh air outlet channel can be shortened, which helps to simplify the fresh air outlet structure and improve the air outlet efficiency. By using the middle air outlet method, the air outlet height can be increased, so that the range of action when the fresh air blows out of the main unit 10 is larger, which further helps to enhance the space where the fresh air acts.

[0065] Please refer to Figure 4, in one embodiment, an opening is formed on the host 10 for the slave unit 20 to move out of the accommodation bin 17. The size and shape of the opening are adapted to the outer shape of the slave unit 20. A side door for opening or closing the opening is formed on the host 10. The opening can be provided on the side plate opposite to the back plate 12. The lower end of the opening can be provided at the bottom of the host 10 to reduce the resistance when the slave unit 20 moves out of the accommodation bin 17. When the slave unit 20 needs to operate independently, the side door can be opened and the slave unit 20 can be moved out so that the slave unit 20 can perform refrigeration or heating at a position with a certain distance from the host 10, thereby increasing the effective space of the air conditioner. The slave unit 20 can operate simultaneously with the host 10 to achieve rapid indoor refrigeration or heating.

[0066] Please refer to Figure 11 , the fresh air device 30 is used to draw outdoor fresh air into the room. Optionally, the fresh air device 30 further includes a purification module 34. The purification module 34 is provided in the main housing 31. Since the purification module 34 is generally arranged on the negative pressure side of the fan 36 to improve the purification efficiency, the purification module 34 is provided at the air inlet of the fan 36. The fresh air device 30 has a fresh air mode. In the fresh air mode, when the fan 36 operates, outdoor fresh air enters the main housing 31 from the fresh air inlet 311, and after being purified by the purification module 34, it enters the air inlet of the fan 36 and is output from the air outlet of the fan 36 to the fresh air outlet 39 and then output to the room through the fresh air outlet 39. The purification module 34 can be a filter screen, or other purification devices, or a combination of multiple purification devices.

[0067] The purification module 34 has a windward surface facing the fresh air inlet 311 and a leeward surface facing the air inlet of the blower 36. Outdoor fresh air penetrates the purification module 34 from the windward surface to the leeward surface and enters the air inlet of the blower 36. A gap may be provided between the windward surface of the purification module 34 and the inner wall of the main housing 31, and the gap forms a first chamber 32. The fresh air input from the fresh air inlet 311 enters the first chamber 32 and is delivered to the second chamber 33 after being purified by the purification module 34. Since the effective cross-sectional area of the air flow at the fresh air inlet 311 is usually smaller than the area of the windward surface of the purification module 34, the first chamber 32 can be used to accommodate the air flow, so that the air flow is in a gradually expanding state in the first chamber 32 before entering the purification module 34 from the air inlet of the fresh air blower 36. This helps to reduce the wind resistance when the air flow enters the purification module 34 and can reduce the air flow noise. The windward surface of the purification module 34 may be parallel to the plane where the fresh air inlet 311 is located, so that the air flow does not generate a sharp turn when entering the first chamber 32, thereby reducing the wind resistance. Further, through the gradually expanding air flow channel formed by the first chamber 32, the air flow can have a smaller wind resistance before entering the purification module 34. By forming a gradually expanding channel, eddy currents are not easily generated in the first chamber 32, and the air flow noise is further reduced. Through the gradually expanding first chamber 32, the air flow can fully contact the windward surface of the purification module 34, so as to make full use of the surface of the purification module 34, increase the area for purifying the air flow, and improve the utilization rate of the purification module 34. When the air flow passes through the purification module 34 and reaches the second chamber 33, since the cross-sectional area of the air inlet of the blower 36 is usually small, the air flow channel from the second chamber 33 to the air inlet of the blower 36 is in a gradually shrinking setting, so that the air flow can quickly enter the air inlet of the blower 36, thereby increasing the air inlet speed of the blower 36 and helping to increase the air intake of the blower 36.

[0068] When manufacturing the fresh air device 30, a heat exchanger 37 may be provided in the main housing 31 of the fresh air device 30. The heat exchanger 37 may be provided on the air inlet side of the blower 36, close to the fresh air inlet 311, or may be provided on the air outlet side, close to the fresh air outlet 39. Optionally, in one embodiment, the heat exchanger 37 is provided in the second chamber 33, and the heat exchanger 37 is located between the leeward surface of the purification module 34 and the air inlet of the blower 36, so as to make full use of the internal space of the second chamber 33 and avoid the heat exchanger 37 from being contaminated. The heat exchanger 37 may be a heater or other functional components capable of heat exchange.

[0069] Please refer to Figure 12, the blower 36 is a centrifugal blower. The blower 36 has a volute component 362, inside which there is an impeller 361. The volute component 362 is formed with an air inlet and an air outlet of the blower 36. The volute component 362 may also be provided with a motor fixing cover 363. A motor 38 for driving the impeller 361 to rotate is provided on the main housing 31 or the volute component 362, and the impeller 361 is driven to rotate by the motor 38.

[0070] Please refer to Figure 11 and Figure 12 , when manufacturing the main housing 31, a slot 35 may be provided on the main housing 31. The purification module 34 is inserted into the main housing 31 through the slot 35 to realize the replacement and maintenance of the purification module 34. When it is necessary to disassemble or maintain the purification module 34, the purification module 34 can be pulled outwards along the slot 35 in the direction of the arrow as shown in Figure 11 . A bracket 341 may be provided on the outer side of the purification module 34 to fix the purification module 34. When installing the purification module 34, when the bracket 341 is fixed on the slot 35, the purification module 34 is fixed on the main housing 31. The opening of the slot 35 may face the bottom of the host 10 to facilitate making a moving space for the purification module 34, and at the same time, the purification module 34 can be arranged in a direction parallel to the back plate 12. The bracket 341 may be a grid-like frame structure for supporting the purification module 34 or a box-like structure.

[0071] Please refer to Figure 14 , in an embodiment, the fresh air device 30 has an internal circulation mode. In the internal circulation mode, the blower 36 sucks indoor air into the main housing 31, and after being purified by the purification module 34, it is output from the fresh air outlet 39. The purification module 34 has a leeward surface facing the air inlet of the blower 36 and a windward surface facing the fresh air inlet 311. The main housing 31 is provided with a first air damper 312 for opening or closing the fresh air inlet 311 to close the fresh air inlet 311 when fresh air input is not required. The main housing 31 is also formed with an internal circulation inlet 313 communicating the windward surface of the purification module 34 and the outside of the main housing 31. The internal circulation inlet 313 can be used to communicate with the outside of the host, that is, communicate with the indoor. A second air damper 314 for opening or closing the internal circulation inlet 313 is provided on the main housing 31. In the internal circulation mode, the first air damper 312 closes the fresh air inlet 311 so that outdoor fresh air cannot enter the main housing 31, and the second air damper 314 opens the internal circulation inlet 313. In the internal circulation mode, indoor air can be purified by the fresh air device and then input into the room to realize the circulating purification of indoor air.

[0072] The fresh air inlet 311 is used to connect to the outdoor fresh air duct 50. The fresh air inlet 311 can be provided with a first opening 319 for connecting to the windward surface of the purification module 34, that is, the fresh air inlet 311 has a first opening 319 connecting to the first chamber 32, so that fresh air enters the first chamber 32 through the first opening 319. The first air damper 312 is used to open or close the first opening 319. When the fresh air device 30 is in the internal circulation mode, the first air damper 312 closes the first opening 319, so that when the fan 36 operates, outdoor fresh air cannot enter the first chamber 32 through the first opening 319. The second air damper 314 opens, so that indoor air enters the first chamber 32, is purified by the purification module 34, and then is output from the fresh air outlet 39 to achieve indoor air purification.

[0073] When the fresh air device 30 is in the fresh air mode, the first air damper 312 opens, and the second air damper 314 closes the internal circulation inlet 313, so that outdoor fresh air can enter the first chamber 32 through the fresh air inlet 311 and the first opening 319, and after being purified by the purification module 34, it is input into the room. The fresh air outlet 39 can be used for fresh air output and internal circulation air flow output, and has both fresh air and circulation purification functions.

[0074] Please refer to Figure 15 In an embodiment, the fresh air device 30 further has an exhaust mode. The purification module 34 has a leeward surface facing the air inlet of the fan 36 and a windward surface facing the fresh air inlet 311. The main housing 31 is provided with a first opening 319 connecting the fresh air inlet 311 and the windward surface of the purification module 34 and a first air damper 312 for opening or closing the first opening 319. An exhaust inlet 315 connecting the air outlet side of the purification module 34 and the outside of the main housing 31 and a third air damper 316 for opening or closing the exhaust inlet 315 are formed on the main housing 31. The main housing 31 is provided with a second opening 317 connecting the fresh air outlet 39 and the fresh air inlet 311 and a fourth air damper 318 for switching between the second opening 317 and the fresh air outlet 39; the windward surface of the purification module 34 can form the first chamber 32 between the inner surface of the main housing 31, and the leeward surface of the purification module 34 can form the second chamber 33 between the plane where the air inlet of the fan 36 is located. The first opening 319 connects the first chamber 32 and the fresh air inlet 311. The air flow output from the air outlet of the fan 36 can be output through the air inlet and outlet, or can be conveyed to the fresh air inlet 311 through the second opening 317. Since the fresh air inlet 311 is connected to the outside, the fresh air inlet 311 can be used to discharge indoor air to the outside.

[0075] The fresh air device 30 has an exhaust mode. In the exhaust mode, it is used to discharge indoor air to the outside. The third air damper 316 opens the exhaust inlet 315, so that indoor air enters the second chamber 33 through the exhaust inlet 315. The first air damper 312 closes the first opening 319. The fresh air inlet 311 is used to discharge air to the outside. The fourth air damper 318 opens the second opening 317 and closes the fresh air outlet 39, so that the air flow output from the air outlet of the fan 36 flows through the second opening 317 to the fresh air inlet 311 and is output to the outside through the fresh air inlet 311.

[0076] When the fresh air device 30 has both a fresh air mode and an exhaust mode, when the fresh air device 30 is in the fresh air mode, the third air damper 316 closes the exhaust inlet 315, the first air damper 312 opens the first opening 319, the fourth air damper 318 closes the second opening 317, and opens the fresh air outlet 39, so that outdoor air sequentially passes through the fresh air inlet 311 and the first opening 319 to enter the first chamber 32, and after being purified by the purification module 34, it is output to the fresh air outlet 39 through the air outlet of the fan 36. The fresh air device 30 can be used to input fresh air into the room or to discharge polluted indoor air to the outside.

[0077] The fresh air device 30 can also have three operating modes: fresh air mode, exhaust mode, and internal circulation mode. On the basis of the above exhaust mode, the fresh air device 30 can also have the internal circulation mode at the same time. In the internal circulation mode, the first air damper 312 opens the first opening 319, the fourth air damper 318 closes the exhaust inlet 315, the second air damper 314 opens the internal circulation inlet 313, the fourth air damper 318 closes the second opening 317, and opens the fresh air outlet 39. When the fan 36 is running, the air flow enters the first chamber 32 from the internal circulation inlet 313, is purified by the purification module 34, then enters the second chamber 33, and reaches the air outlet of the fan 36 from the air inlet of the fan 36, and is output to the room from the fresh air outlet 39 to realize indoor air circulation.

[0078] The driving methods of the first air damper 312, the second air damper 314, the third air damper 316, and the fourth air damper 318 can be rotation or sliding. An electric motor 38 can be provided on the main housing 31, and the electric motor 38 is electrically connected to the electric control component of the air conditioner to realize the driving control of each air damper.

[0079] When the fresh air device 30 has an internal circulation mode, an internal circulation air outlet corresponding to the internal circulation inlet 313 and an external exhaust air outlet 16 corresponding to the exhaust inlet 315 can be provided on the main unit 10. Please refer to Figure 2and Figure 5 , the external air outlet 14, the external circulation air outlet 15, and the external exhaust air outlet 16 can also be arranged on the back plate 12. The accommodation bin 17 is arranged near the bottom of the main machine 10 so that the sub-machine 20 can be conveniently removed from the accommodation bin 17. When manufacturing the sub-machine 20, rollers can be arranged on the sub-machine 20 to facilitate the movement of the sub-machine 20. Grilles corresponding to the positions of the external fresh air inlet 13, the external air outlet 14, the external circulation air outlet 15, the external exhaust air outlet 16, and the main air outlet 11 can be arranged on the main machine 10 to prevent foreign objects from entering the main machine 10.

[0080] The above are only alternative embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. An air conditioner, characterized in that, Comprising: A main unit, with a receiving bin provided at the lower part of the main unit; A sub-unit, movably arranged in the receiving bin; And A fresh air device, arranged in the receiving bin. The fresh air device has a main housing and a blower arranged in the main housing. The main housing is formed with a fresh air inlet and a fresh air outlet. The fresh air inlet is used to connect to a fresh air pipe, and the fresh air outlet is used to connect to the interior. The blower has an air inlet and an air outlet. The air inlet of the blower is arranged facing the fresh air inlet, and the air outlet of the blower is connected to the fresh air outlet; The fresh air device is located above the sub-unit; The air conditioner further comprises: A diversion pipe, detachably arranged on the outside of the main unit. The diversion pipe is formed with a fresh air passage and a first port and a second port communicating with the fresh air passage. The first port is connected to the fresh air inlet, and the second port is connected to the fresh air pipe; The main unit is provided with an external fresh air inlet corresponding to the fresh air inlet. The fresh air pipe is fixedly connected to the external fresh air inlet. One end of the diversion pipe close to the external fresh air inlet is bent to form an arc-shaped diversion surface on the inner surface of the fresh air passage at the end close to the external fresh air inlet.

2. The air conditioner according to claim 1, characterized in that, The main unit has a back panel. The fresh air inlet communicates with the outside of the back panel, and the air inlet of the blower is arranged facing the back panel.

3. The air conditioner according to claim 1, characterized in that, The blower is a centrifugal blower, and the axis of the blower is perpendicular to the height direction of the main unit.

4. The air conditioner according to any one of claims 1 to 3, characterized in that, The fresh air device further comprises: A purification module, arranged in the main housing and at the air inlet of the blower.

5. The air conditioner according to claim 4, characterized in that, A first air damper is provided at the fresh air inlet. The main housing is further formed with an internal circulation inlet communicating with the air inlet of the blower and the outside of the main unit. A second air damper is provided at the internal circulation inlet; The fresh air device has an internal circulation mode. In the internal circulation mode, the first air damper is closed and the second air damper is opened.

6. The air conditioner according to claim 5, wherein, The purification module has a windward surface facing the fresh air inlet. A first chamber is formed between the windward surface of the purification module and the inner wall of the main housing. The fresh air inlet and the internal circulation inlet respectively communicate with the first chamber.

7. The air conditioner according to claim 4, characterized in that, The main housing is formed with a first opening communicating the air inlet of the blower and the fresh air inlet, a second opening communicating the air outlet of the blower and the fresh air inlet, and an exhaust inlet communicating the air inlet of the blower and the outside of the main unit. A first air damper is provided at the first opening, a third air damper is provided at the exhaust inlet, and the main housing is provided with a fourth air damper for switching between the fresh air outlet and the second opening; The fresh air device has an exhaust mode. In the exhaust mode, the third air damper is opened, the first air damper is closed, the fourth air damper opens the second opening and closes the fresh air outlet.

8. The air conditioner according to claim 7, characterized in that, The purification module has a leeward surface facing the air inlet of the blower. A second chamber is formed between the leeward surface of the purification module and the air inlet of the blower. The exhaust inlet communicates with the second chamber.

9. The air conditioner according to claim 8, characterized in that The purification module has a windward surface facing the fresh air inlet. A first chamber is formed between the windward surface of the purification module and the inner wall of the main housing. The first opening communicates the fresh air inlet and the first chamber; The main housing is formed with an internal circulation inlet communicating the first chamber and the outside of the main unit, and a second air damper is provided at the internal circulation inlet; the fresh air device has an internal circulation mode, in which the first air damper and the third air damper are closed, the second air damper is opened, the fourth air damper opens the fresh air outlet, and closes the second opening.

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