Window air conditioner

Abstract

The present invention discloses a window air conditioner. The window air conditioner includes a chassis, an indoor air duct housing, an indoor-side heat exchanger and a fresh air device. The indoor air duct housing is installed on the front side of the chassis, and an indoor-side air duct is formed inside the indoor air duct housing. The indoor-side heat exchanger is installed on the chassis and is disposed corresponding to the air inlet end of the indoor-side air duct. The fresh air device is installed on the chassis and is used for delivering fresh air to the room. The fresh air device includes a fresh air housing extending from the outdoor side to the indoor side. The fresh air housing is provided with a fresh air inlet communicating with the outdoor, a fresh air outlet communicating with the indoor, and a fresh air duct connecting the fresh air inlet and the fresh air outlet. The fresh air outlet is disposed adjacent to the windward surface of the indoor-side heat exchanger. The window air conditioner of the present invention enables most of the fresh air without dehumidification to be dehumidified by passing through the indoor-side heat exchanger first before being mixed with the indoor air, and then blown into the room, so that the influence of the fresh air on the indoor temperature and humidity is smaller, and thus the user's comfort is better.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and particularly to a window air conditioner. Background Art

[0002] In modern life, people have an increasing demand for fresh air. PTAC (Packaged Terminal Air Conditioner) window machines, which are the most commonly used refrigeration systems in mid - to - high - end hotels and guesthouses in the US market, also have a strong demand. However, people now not only require fresh air but also have new demands for the comfort of fresh air. In related technologies, by connecting the fresh - air duct to the indoor - side duct and using the indoor evaporator as the fresh - air evaporator for dehumidification. In this way, although one fresh - air evaporator can be saved, after the indoor fan blows the fresh air out from the indoor air outlet, it will be fully mixed with the indoor air and then enter the indoor duct for dehumidification. Therefore, the un - dehumidified fresh air will still affect the indoor air to a certain extent, thus giving users an uncomfortable experience.

[0003] The above content is only used to assist in understanding the technical solution of the invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main object of the present invention is to propose a window air conditioner, aiming to solve one or more of the above - mentioned technical problems.

[0005] To achieve the above object, the window air conditioner proposed by the present invention includes a chassis, an indoor duct housing, an indoor - side heat exchanger, and a fresh - air device;

[0006] The indoor duct housing is installed on the front side of the chassis, and an indoor - side duct is formed inside the indoor duct housing;

[0007] The indoor - side heat exchanger is installed on the chassis and is disposed corresponding to the air - inlet end of the indoor - side duct;

[0008] The fresh - air device is installed on the chassis and is used for delivering fresh air into the room. The fresh - air device includes a fresh - air housing extending from the outdoor side to the indoor side. The fresh - air housing is provided with a fresh - air inlet communicating with the outdoor, a fresh - air outlet communicating with the indoor, and a fresh - air duct connecting the fresh - air inlet and the fresh - air outlet. The fresh - air outlet is disposed adjacent to the windward surface of the indoor - side heat exchanger.

[0009] In one embodiment, part of the fresh - air housing is located between the lower end of the indoor duct housing and the chassis.

[0010] In one embodiment, the fresh - air housing located below the indoor duct housing is spaced apart from the lower end of the indoor duct housing.

[0011] In one embodiment, the window air conditioner further includes a housing installed on the chassis. The indoor air duct housing and the indoor heat exchanger are located inside the housing. An indoor air inlet is provided on the front side wall surface of the housing. The indoor heat exchanger is disposed corresponding to the indoor air inlet. The fresh air housing has an air outlet section;

[0012] The air outlet section is located outside the front side wall surface of the housing, and the fresh air outlet is provided adjacent to the indoor air inlet, or,

[0013] The indoor heat exchanger is spaced from the front side wall surface of the housing. The air outlet section is located between the indoor heat exchanger and the front side wall surface of the housing, and the fresh air outlet is communicated with the indoor air duct.

[0014] In one embodiment, the end of the air outlet section forms the fresh air outlet, and the opening of the fresh air outlet is arranged upward.

[0015] In one embodiment, the fresh air housing further has an air inlet section, an arc section and a connection section. The air inlet section, the arc section, the connection section and the air outlet section are connected in sequence. The connection section is located between the lower end of the indoor air duct housing and the chassis, and the air passing area of the connection section is smaller than that of the arc section.

[0016] In one embodiment, the lower surface of the connection section is adapted to the chassis, and the upper surface is adapted to the lower end of the indoor air duct housing.

[0017] In one embodiment, the arc section includes a connected transition area and a buffer area. The transition area is connected to the air inlet section, and the buffer area is connected to the connection section. The transition area is arranged to gradually expand from the air inlet section to the buffer area, and the buffer area is arranged to gradually contract from the transition area to the connection section.

[0018] In one embodiment, one side surface of the transition area is arranged in an inward concave arc shape, and the upper surface of the buffer area is arranged in an outward convex arc shape.

[0019] In one embodiment, the opening of the fresh air outlet is arranged facing the front of the window air conditioner.

[0020] In one embodiment, the window air conditioner further includes a compressor installed on the chassis. The fresh air device and the compressor are respectively arranged on two sides in the length direction of the chassis.

[0021] In one embodiment, the window air conditioner also includes a shell installed on the chassis, the indoor air duct shell and the indoor heat exchanger are located in the shell, the front wall of the shell is provided with an indoor air inlet, the indoor heat exchanger includes a first indoor heat exchanger and a second indoor heat exchanger arranged corresponding to the indoor air inlet, and the window air conditioner has a constant temperature dehumidification mode. In the constant temperature dehumidification mode, one of the first indoor heat exchanger and the second indoor heat exchanger is in a heating mode, and the other is in a cooling mode.

[0022] In one embodiment, the first indoor heat exchanger and the second indoor heat exchanger are stacked along the air inlet direction of the indoor air duct.

[0023] In one embodiment, the first indoor heat exchanger and the second indoor heat exchanger are arranged side by side in a direction perpendicular to the air inlet direction of the indoor air duct, so that part of the airflow entering from the indoor air inlet blows toward the first indoor heat exchanger, and the other part blows toward the second indoor heat exchanger.

[0024] In one embodiment, the window air conditioner further comprises an outdoor heat exchanger, a refrigerant circulation pipeline, a first valve and a second valve;

[0025] The refrigerant outlet of the compressor of the window air conditioner is provided with a discharge pipe, and the refrigerant inlet is provided with a suction pipe;

[0026] The discharge pipe, the outdoor heat exchanger, the first indoor heat exchanger, the second indoor heat exchanger, and the suction pipe are connected in sequence through the refrigerant circulation pipeline;

[0027] The first valve is connected in series to the refrigerant circulation pipeline between the outdoor heat exchanger and the first indoor heat exchanger, and the second valve is connected in series to the refrigerant circulation pipeline between the first indoor heat exchanger and the second indoor heat exchanger.

[0028] In one embodiment, the refrigerant circulation pipeline includes a first pipe connecting the discharge pipe and the outdoor heat exchanger, and a second pipe connecting the suction pipe and the second indoor heat exchanger. The switching device is connected in series to the first pipe and the second pipe, and the switching device has a first switching state and a second switching state.

[0029] In the first switching state, the first pipe connected to both ends of the switching device is conductive, and the second pipe connected to both ends of the switching device is conductive;

[0030] In the second switching state, the first pipe between the discharge pipe and the switching device is in communication with the second pipe between the switching device and the second indoor heat exchanger, and the first pipe between the outdoor heat exchanger and the switching device is in communication with the second pipe between the suction pipe and the switching device.

[0031] In one embodiment, the window air conditioner further includes a controller, which is electrically connected to the switching device, the first valve and the second valve;

[0032] When the window air conditioner is in the constant temperature and dehumidification mode, the controller is used to control the switching device to be in the first switching state, and is used to control the first valve to be fully opened and the second valve to be partially opened; and / or,

[0033] The window air conditioner further has a full cooling mode. When the window air conditioner is in the full cooling mode, the controller is used to control the switching device to be in the first switching state, and is used to control the first valve to be partially opened and the second valve to be fully opened; and / or,

[0034] The window air conditioner further has a full heating mode. When the window air conditioner is in the full heating mode, the controller is used to control the switching device to be in the second switching state, and is used to control the second valve to be fully opened and the first valve to be partially opened.

[0035] In the window air conditioner of the present invention, the fresh air housing extends from the outside to the inside of the room, and the fresh air outlet of the fresh air housing is adjacent to the windward surface of the indoor heat exchanger. The air flow blown out from the fresh air outlet can immediately flow through the indoor heat exchanger and be sucked into the indoor air duct, and then blown out from the indoor air outlet. Therefore, most of the fresh air that has not been dehumidified can be dehumidified by the indoor heat exchanger before being fully mixed with the indoor air flow, and then blown into the room. This greatly shortens the fresh air circulation path, reduces the wind resistance, and makes the influence of the fresh air on the indoor temperature and humidity smaller, thus improving the user's comfort. Description of the Drawings

[0036] In order 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, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0037] Figure 1 It is a schematic structural diagram of an embodiment of the window air conditioner of the present invention;

[0038] Figure 2Schematic structural diagram of another embodiment of the window air conditioner of the present invention; wherein, the housing is removed;

[0039] Figure 3 is Figure 2 Schematic structural diagram of the window air conditioner from another angle in

[0040] Figure 4 is Figure 3 Top view structural diagram of the window air conditioner in

[0041] Figure 5 Left view structural diagram of yet another embodiment of the window air conditioner of the present invention;

[0042] Figure 6 is Figure 2 Assembly structural diagram of the chassis and fresh air device of the window air conditioner in

[0043] Figure 7 is Figure 3 Assembly structural diagram of the chassis and fresh air device of the window air conditioner in

[0044] Figure 8 is Figure 6 Schematic structural diagram of the fresh air device of the window air conditioner in

[0045] Figure 9 is Figure 7 Schematic structural diagram of the fresh air device of the window air conditioner in

[0046] Figure 10 Schematic structural diagram of yet another embodiment of the window air conditioner of the present invention;

[0047] Figure 11 Schematic structural diagram of still another embodiment of the window air conditioner of the present invention.

[0048] Explanation of the reference numerals in the drawings:

[0049] Label Name Label Name Label Name 100 Chassis 413 Fresh air duct 610 Discharge pipe 200 Indoor air duct shell 414 Air outlet section 620 Suction pipe 210 Indoor side air duct 415 Air inlet section 700 Outdoor heat exchanger 300 Indoor side heat exchanger 416 Arc section 810 First valve 310 First indoor heat exchanger 416a Transition area 820 Second valve 320 Second indoor heat exchanger 416b Buffer zone 830 First pipe 400 Fresh air device 417 Connection section 840 Second pipe 410 Fresh air shell 500 Shell 900 Switching device 411 Fresh air inlet 510 Indoor air inlet 412 Fresh air outlet 600 Compressor

[0050] The realization, functional features 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

[0051] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such 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 this specific posture changes, then the directional indications will also change accordingly.

[0052] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously.

[0053] The present invention provides a window air conditioner.

[0054] In the embodiments of the present invention, as Figures 1 to 7 shown, the window air conditioner includes a chassis 100, an indoor air duct housing 200, an indoor side heat exchanger 300, and a fresh air device 400. The indoor air duct housing 200 is installed on the front side of the chassis 100, and an indoor side air duct 210 is formed inside the indoor air duct housing 200. The indoor side heat exchanger 300 is installed on the chassis 100 and is disposed corresponding to the air inlet end of the indoor side air duct 210. The fresh air device 400 is installed on the chassis 100 and is used to deliver fresh air into the room. The fresh air device 400 includes a fresh air housing 410 extending from the outdoor side to the indoor side. The fresh air housing 410 is provided with a fresh air inlet 411 communicating with the outdoor, a fresh air outlet 412 communicating with the indoor, and a fresh air duct 413 connecting the fresh air inlet 411 and the fresh air outlet 412. The fresh air outlet 412 is disposed adjacent to the windward surface of the indoor side heat exchanger 300.

[0055] In this embodiment, the chassis 100 provides installation and support for the internal structure of the window air conditioner. The indoor unit of the air conditioner further includes a housing 500. The housing 500 is installed on the chassis 100 so that the housing 500 and the chassis 100 form the outer frame of the entire window air conditioner indoor unit, and the window air conditioner is installed in the accommodation space formed by the housing 500 and the chassis 100. The shape of the housing 500 can be square, cylindrical, etc., and can be selected according to specific usage requirements, and no specific limitation is made here. Generally, for the convenience of manufacturing and shaping, the shape of the housing 500 is generally set to be square. An outdoor air duct housing is also provided in the housing 500 at the rear side of the chassis 100. An outdoor air duct is formed in the outdoor air duct housing, and an outdoor fan and an outdoor heat exchanger 700 are provided in the outdoor air duct for driving outdoor air flow into the outdoor air duct to dissipate heat for the outdoor heat exchanger 700. The rear side wall surface of the housing 500 is provided with an outdoor air inlet and a fresh air inlet, and the fresh air inlet is communicated with the fresh air inlet 411. The extending direction of the indoor air duct housing 200 is generally consistent with the length direction of the chassis 100. The indoor heat exchanger 300 can be installed in the indoor air duct housing 200 or at a position outside the indoor air duct housing 200 corresponding to the air inlet end of the indoor air duct 210, as long as the air flow blown out from the indoor air duct 210 is the air flow after being heat-exchanged by the indoor heat exchanger 300.

[0056] The housing 500 is provided with an indoor air inlet 510 and an indoor air outlet. The air inlet end of the indoor air duct 210 is communicated with the indoor air inlet 510, and the air outlet end of the indoor air duct 210 is communicated with the indoor air outlet. Both the indoor air inlet 510 and the indoor air outlet can be opened on the front side wall surface of the housing 500. Or the indoor air inlet 510 is located on the front side wall surface of the housing 500, and the indoor air outlet is located on the top surface of the housing 500. It is also possible to make the indoor air outlet located at the junction of the front side wall surface and the top surface of the housing 500. An indoor fan can also be provided in the indoor air duct 210, and the indoor fan can be a centrifugal fan, a cross-flow fan, etc. The fresh air and the indoor air flow are introduced from the indoor air inlet 510 through the indoor fan, flow through the indoor heat exchanger 300 after heat exchange, and are blown out from the indoor air outlet.

[0057] The fresh air inlet 411 and the fresh air outlet 412 can be rectangular, circular, strip-shaped, oval, or multiple micro-holes, and no specific limitation is made here. A fresh air fan can be provided in the fresh air duct 413 for guiding the air flow from the fresh air inlet 411 to the fresh air outlet 412. In some other embodiments, the fresh air inlet 411 can also be communicated with the outdoor air duct, so that the outdoor fan can be used to blow the outdoor air flow into the fresh air duct 413 and blow it out from the fresh air outlet 412. To determine whether the window air conditioner needs to turn on the dehumidification mode, it can be jointly determined by the indoor temperature sensing device and the humidity sensing device.

[0058] It can be understood that the fresh air housing 410 extends from the outdoor side to the indoor side, that is, the fresh air housing 410 extends from one side of the outdoor air duct housing to one side of the indoor air duct housing 200. In this way, the fresh air inlet 411 of the fresh air housing 410 located on the outdoor air duct housing side communicates with the outside, and the fresh air outlet 412 of the fresh air housing 410 located on the indoor air duct housing 200 side communicates with the indoor. The outdoor air flow is directly introduced into the room through the independent fresh air duct 413. It should be noted that the fresh air outlet 412 communicating with the indoor means that the air flow blown out from the fresh air outlet 412 blows directly into the room, rather than blowing into the indoor side air duct 210 and indirectly blowing into the room through the indoor side air duct 210. Since the indoor air duct housing 200 requires sufficient space, the indoor air duct housing 200 and the indoor side structure are usually adapted to the length of the chassis 100. In this way, the overall structure of the machine is made more compact. The fresh air housing 410 is installed on the chassis 100 and extends from the outdoor side to the indoor side. Then the fresh air housing 410 can be directly arranged through the indoor air duct housing 200, and a sealing structure is arranged at the connection between the fresh air housing 410 and the indoor air duct housing 200 to achieve sealing. In another embodiment, part of the fresh air housing 410 is located between the lower end of the indoor air duct housing 200 and the chassis 100. So that part of the fresh air housing 410 is located below the indoor air duct housing 200, that is, the fresh air housing 410 is introduced into the room from below the indoor air duct housing 200. In this way, the fresh air housing 410 will not interfere with the indoor side air duct 210, and there is no need to perforate and set a sealing structure on the indoor air duct housing 200, etc., which simplifies the manufacturing process and installation difficulty. At the same time, the occupied space of the fresh air housing 410 is reduced, making the overall structure of the machine more compact, and the volume of the whole machine will not be increased additionally while meeting the independent fresh air outlet.

[0059] It should be noted that the fresh air outlet 412 is arranged adjacent to the windward surface of the indoor side heat exchanger 310, and the distance between the fresh air outlet 412 and the windward surface of the indoor side heat exchanger 310 is less than or equal to 10% of the thickness of the indoor side heat exchanger 310. Then the fresh air outlet 412 can be flush with the windward surface of the indoor side heat exchanger 310, or the fresh air outlet 412 is set to protrude from the windward surface of the indoor side heat exchanger 310. That is, the end of the fresh air housing 410 is set to be flush with or protrude from the windward surface of the indoor side heat exchanger 310. In this way, the fresh air duct 413 can directly extend to the windward surface of the indoor heat exchanger, which is more conducive to the fresh air passing through the indoor side heat exchanger 310 for dehumidification. It is also possible to set the end of the fresh air housing 410 not to protrude from the windward surface of the indoor side heat exchanger 310, and only the fresh air outlet 412 needs to be adjacent to the windward surface of the indoor side heat exchanger 310. At this time, the fresh air blown out from the fresh air outlet 412 can blow into the room along the channel formed by the bottom wall of the indoor side heat exchanger 310, the chassis 100 and the housing 500.

[0060] By arranging the fresh air outlet 412 adjacent to the windward side of the indoor heat exchanger 300, when fresh air enters the fresh air duct 413 from the fresh air inlet 411 and blows out from the fresh air outlet 412, the indoor fan sucks the air flow blown out from the fresh air outlet 412 and the indoor air flow together through the indoor heat exchanger 300 for dehumidification and then into the indoor air duct 210, and the dehumidified mixed air flow is blown out from the indoor air outlet by the indoor fan. In this way, dehumidification can be achieved by using the indoor heat exchanger 300 without additionally arranging a fresh air evaporator, which greatly reduces the manufacturing cost and improves the energy efficiency. Moreover, since most of the air flow blown out from the fresh air outlet 412 can be dehumidified by passing through the indoor heat exchanger 300 before being fully mixed with the indoor air flow, the fresh air that has not been dehumidified can be prevented from entering the room and affecting the humidity and temperature of the indoor air after being mixed with the indoor air flow, thereby greatly improving the user's comfort level.

[0061] In the window air conditioner of the present invention, the fresh air housing 410 extends from the outdoor side to the indoor side, and the fresh air outlet 412 of the fresh air housing 410 is adjacent to the windward side of the indoor heat exchanger 300. The air flow blown out from the fresh air outlet 412 can immediately flow through the indoor heat exchanger 300 and be sucked into the indoor air duct 210, and then be blown out from the indoor air outlet. Thus, most of the fresh air that has not been dehumidified can be dehumidified by passing through the indoor heat exchanger 300 before being fully mixed with the indoor air flow, and then blown into the room, greatly reducing the fresh air circulation path and the mixing rate of the fresh air that has not been dehumidified with the indoor air, making the fresh air have less impact on the indoor temperature and humidity, and thus the user's comfort level is better.

[0062] In the above embodiment where a part of the fresh air housing 410 is located between the lower end of the indoor air duct housing 200 and the chassis 100, further, the fresh air housing 410 located below the indoor air duct housing 200 is spaced apart from the lower end of the indoor air duct housing 200. It should be noted that the gap between the fresh air housing 410 and the lower end of the indoor air duct housing 200 should be minimized under the condition that the gravity of the indoor air duct housing 200 will not be transmitted to the fresh air housing 410. In this way, air leakage can be avoided. Usually, the gap between the fresh air housing 410 and the lower end of the indoor air duct housing 200 is less than or equal to 5 mm. By arranging the fresh air housing 410 and the lower end of the indoor air duct housing 200 with a gap, the fresh air housing 410 will not bear force, and thus the fresh air housing 410 is not easily damaged. In other embodiments, the fresh air housing 410 can also be in contact with or connected to the indoor air duct housing 200. In this case, it is necessary to provide reinforcing ribs on the fresh air housing 410 or increase the structural strength of the fresh air housing 410, etc., so that the fresh air housing 410 can bear part of the gravity of the indoor air duct housing 200.

[0063] In one embodiment, as Figures 1 to 5As shown in the figure, the window air conditioner further includes a housing 500 mounted on the chassis 100. The indoor air duct housing 200 and the indoor heat exchanger 300 are located inside the housing 500. The front side wall surface of the housing 500 is provided with an indoor air inlet 510. The indoor heat exchanger 300 is arranged corresponding to the indoor air inlet 510. The fresh air housing 410 has an air outlet section 414. The air outlet section 414 is located outside the front side wall surface of the housing 500, and the fresh air outlet 412 is arranged adjacent to the indoor air inlet 510.

[0064] In this embodiment, the housing 500 is further provided with an indoor air outlet, which can be specifically arranged at the connection of the front side wall surface and the top surface of the housing 500, so that the indoor air outlet blows air obliquely upward. On the one hand, it can avoid the air directly blowing on the user and the ceiling. On the other hand, it can make the air flow blow farther, so that the mixing effect is better, and then the indoor temperature distribution is more uniform. It can be understood that the fresh air outlet 412 is arranged on the air outlet section 414, and can be specifically arranged at the end of the air outlet section 414. By arranging the air outlet section 414 of the fresh air housing 410 outside the housing 500, in this way, the indoor heat exchanger 300 can be directly attached to the front side wall surface of the housing 500, and then the air flow entering from the indoor air inlet 510 can directly enter the indoor heat exchanger 300, improving the heat exchange efficiency. And the air outlet section 414 is arranged outside the housing 500, which can improve the fresh air circulation rate, thus ensuring sufficient fresh air volume. The fresh air outlet 412 is arranged adjacent to the indoor air inlet 510, so that the fresh air near the indoor air inlet 510 can be quickly sucked into the housing 500 for dehumidification and then blown out from the indoor air outlet. The fresh air that has not been dehumidified will not be blown to a place far away from the window air conditioner, so it is not easy to mix with the indoor air in a place far away from the indoor unit of the window air conditioner, and thus will not greatly or hardly affect the indoor air flow.

[0065] In another embodiment, the indoor heat exchanger 300 is spaced apart from the front side wall surface of the housing 500, the air outlet section 414 is located between the indoor heat exchanger 300 and the front side wall surface of the housing 500, and the fresh air outlet 412 is communicated with the indoor air duct 210. By arranging the air outlet section 414 between the indoor heat exchanger and the front side wall surface of the housing 500, the gap between the indoor heat exchanger 300 and the front side wall surface of the housing 500 can be utilized, so that the fresh air flow blown out from the air outlet section 414 can quickly blow towards the indoor heat exchanger 300 for heat exchange. That is, the indoor air impeller can suck the indoor air and the fresh air blown out from the fresh air outlet 412 into the indoor air duct 210 together, and dehumidify through the indoor air duct 210. In this way, not only the fresh air is dehumidified, reducing the influence of the fresh air on the indoor air, but also the air flow of the whole house can only be dehumidified, thereby increasing the dehumidification efficiency. Preferably, the fresh air outlet 412 is arranged towards the windward surface of the indoor heat exchanger 300. In this way, all the un-dehumidified air flow blown out from the fresh air outlet 412 can directly blow towards the indoor heat exchanger 300 without blowing towards the room, and thus will not affect the temperature and humidity in the room.

[0066] In one embodiment, please refer to FIGS. 1 to Figure 3 、 Figure 6 and Figure 7, a fresh air outlet 412 is formed at the end of the air outlet section 414, and the opening of the fresh air outlet 412 is arranged upward. If the fresh air outlet 412 is arranged forward, the fresh air will directly blow into the room. If the fresh air outlet 412 is arranged towards the windward surface of the indoor heat exchanger 300 or the indoor air inlet 510, a large gap needs to be provided between the indoor heat exchanger 300 and the front side wall surface of the housing 500, or the structure of the air outlet section 414 needs to be relatively complex. In this way, the overall volume of the unit will increase to a certain extent. Moreover, when the fresh air outlet 412 is arranged facing the indoor heat exchanger 300 or the front side wall surface of the housing 500, the wind resistance is large and the flow rate of the fresh air circulation will be reduced. By arranging the fresh air outlet 412 upward, the gap between the indoor heat exchanger 300 and the front side wall surface of the housing 500 is fully utilized, the circulation rate of the fresh air is increased, and the fresh air blown out from the fresh air outlet 412 can quickly enter the indoor heat exchanger 300 for dehumidification. Thus, while meeting the fresh air intake, the influence of the fresh air on the indoor air flow is reduced. In other embodiments, the opening of the fresh air outlet 412 is arranged towards the front of the window air conditioner. It should be noted that after the window air conditioner is installed, the side facing the user is the front, and the side facing away from the user is the back. The fresh air housing 410 can be extended outside the housing 500 so that the fresh air outlet 412 is exposed and directly communicates with the room. Of course, the fresh air outlet 412 can also be arranged inside the housing 500 and communicate with the indoor air inlet 510 on the front side wall surface of the housing 500. By arranging the fresh air outlet 412 towards the front of the window air conditioner, the structure of the fresh air housing 410 can be simplified while meeting the dehumidification requirements.

[0067] In one embodiment, as Figures 6 to 9 shown, the fresh air housing 410 further has an air inlet section 415, an arc section 416 and a connection section 417. The air inlet section 415, the arc section 416, the connection section 417 and the air outlet section 414 are connected in sequence. The connection section 417 is located between the lower end of the indoor air duct housing 200 and the chassis 100, and the air passing area of the connection section 417 is smaller than that of the arc section 416.

[0068] In this embodiment, it can be understood that there is a relatively large installation space on the side of the housing 500 close to the outdoors. Therefore, the air inlet section 415 close to the outdoor air duct housing can be set as a section with a relatively large air passing area to ensure sufficient fresh air intake. The connecting section 417 is located between the chassis 100 and the indoor air duct housing 200. In order to minimize the impact on indoor air duct components and make the overall structure more compact, the size of the connecting section 417 should be small, that is, the air passing area of the connecting section 417 is smaller than that of the arc section 416. The arc section 416 connects the air inlet section 415 and the connecting section 417, making the air flow more smooth and reducing wind resistance and wind loss. The air outlet section 414 is arranged between the indoor heat exchanger 300 and the front side of the housing 500. The air passing area of the air outlet section 414 can be adjusted according to the gap between the indoor heat exchanger 300 and the front side of the housing 500. To ensure the air output, usually the width of the fresh air outlet 412 is kept consistent with the gap between the indoor heat exchanger 300 and the front side of the housing 500.

[0069] In one embodiment, please refer to Figures 2 to 7 , the lower surface of the connecting section 417 is adapted to the chassis 100, and the upper surface is adapted to the lower end of the indoor air duct housing 200. The fresh air housing 410 is adaptively installed on the chassis 100, and the shape of the fresh air housing 410 can be adjusted according to the shape of the chassis 100 in the width direction. For example, if the chassis 100 has a stepped structure in the width direction, the fresh air housing 410 is also designed as a stepped shape adapted to the stepped structure of the chassis 100, so that the fresh air housing 410 can be firmly attached and installed on the chassis 100. At the same time, making the upper surface of the connecting section 417 adapted to the lower end of the indoor air duct housing 200, the gap between the connecting section 417 and the chassis 100 and the indoor air duct housing 200 is very small. While maintaining the structural compactness, it can prevent air leakage, thereby improving the overall working performance of the window air conditioner. It can be understood that usually the indoor air duct housing 200 is directly installed on the chassis 100, and its bottom surface is attached to the chassis 100. Therefore, in order to adaptively install the fresh air housing 410, a reserved space can be provided at the position of the indoor air duct housing 200 corresponding to the fresh air housing 410 to form an installation space for installing the connecting section 417 of the fresh air housing 410. In addition, a boss can also be provided on the chassis 100, so that the indoor air duct housing 200 is installed on the boss, and the height of the boss is adapted to the height of the connecting section 417. Thus, the installation height of the indoor air duct housing 200 can be raised to form an installation space for installing the fresh air housing 410 between the chassis 100 and the lower end of the indoor air duct housing 200.

[0070] In one embodiment, as Figures 6 to 9As shown, the arc section 416 includes a connected transition area 416a and a buffer area 416b. The transition area 416a is connected to the air inlet section 415, and the buffer area 416b is connected to the connection section 417. The transition area 416a is gradually expanded from the air inlet section 415 to the buffer area 416b, and the buffer area 416b is gradually reduced from the transition area 416a to the connection section 417.

[0071] In this embodiment, the transition area 416a of the arc section 416 is gradually expanded from the air inlet section 415 to the buffer area 416b. When the fresh air flows from the air inlet section 415 into the arc section 416, it can pass through the transition area 416a for flow expansion, thereby effectively reducing noise. The buffer area 416b connects the transition area 416a and the connection section 417. Therefore, by setting the buffer area 416b, the air flow flowing from the transition area 416a into the connection section 417 can be buffered in the buffer area 416b, making the air flow more smooth, reducing wind resistance and wind loss, and avoiding noise caused by a sudden drop in size. Specifically, one side surface of the transition area 416a is arranged in an inward concave arc shape, and the upper surface of the buffer area 416b is arranged in an outward convex arc shape. In this way, the air flow is more smooth in the entire arc section 416, with smaller wind resistance and wind loss, and noise can be reduced.

[0072] In one embodiment, please refer to Figures 2 to 4 , the window air conditioner further includes a compressor 600 installed on the chassis 100, and the fresh air device 400 and the compressor 600 are respectively arranged on two sides in the length direction of the chassis 100. Since the compressor 600 occupies a large space and has a large weight. By arranging the fresh air device 400 and the compressor 600 on two sides in the length direction of the chassis 100, on the one hand, the layout is more reasonable, the overall arrangement is more compact, and the installation space on the chassis 100 is fully utilized. On the other hand, the weight distribution on the chassis 100 is more uniform, preventing the chassis 100 from deforming due to uneven gravity distribution, and facilitating the installation of the whole machine.

[0073] In one embodiment, as Figure 3 and Figure 5 shown, the window air conditioner further includes a housing 500 installed on the chassis 100. The indoor air duct housing 200 and the indoor side heat exchanger 300 are located inside the housing 500. The front side wall surface of the housing 500 is provided with an indoor air inlet 510. The indoor side heat exchanger 300 includes a corresponding first indoor heat exchanger 310 and a second indoor heat exchanger 320. The window air conditioner has a constant temperature and dehumidification mode. In the constant temperature and dehumidification mode, one of the first indoor heat exchanger 310 and the second indoor heat exchanger 320 is in the heating mode, and the other is in the cooling mode.

[0074] In this embodiment, by making the indoor heat exchanger 300 have a first indoor heat exchanger 310 and a second indoor heat exchanger 320, and in the constant temperature and dehumidification mode, one of the first indoor heat exchanger 310 and the second indoor heat exchanger 320 is in the heating mode and the other is in the cooling mode. The air flow passing through the indoor heat exchanger 300 can be heated and dehumidified simultaneously. The mixed air temperature after heating and dehumidification is appropriate, and there is no feeling of cold wind. After repeated circulation, not only can all the indoor air and fresh air be dehumidified again, but also the whole indoor temperature of the window air conditioner will not drop in the dehumidification mode, and the purpose of constant temperature and dehumidification for the whole house can be achieved. At the same time, when dehumidifying, the indoor heat exchanger 300 can be fully utilized, and there is no need to additionally set a fresh air condenser and a fresh air evaporator, thus greatly reducing the manufacturing cost.

[0075] In one embodiment, please refer to Figure 5 , the first indoor heat exchanger 310 and the second indoor heat exchanger 320 are stacked along the air inlet direction of the indoor air duct 210. When the first indoor heat exchanger 310 and the second indoor heat exchanger 320 are stacked along the air inlet direction of the indoor air duct 210, the indoor air or fresh air entering from the indoor air inlet 510 first passes through the first indoor heat exchanger 310 for dehumidification / heating, and then passes through the second indoor heat exchanger 320 for heating / dehumidification. The indoor fan sends the air flow after heating and dehumidification into the room from the indoor air outlet, realizing constant temperature and dehumidification for the whole house. By making the first indoor heat exchanger 310 and the second indoor heat exchanger 320 stacked along the air inlet direction, all the air flow blown out from the indoor air inlet 510 can be heated simultaneously and then dehumidified simultaneously, so that there is no need to divide the heating and dehumidification into two different air flows, reducing the mixing step and making the temperature and humidity of the air flow blown out from the indoor air outlet more uniform and comfortable.

[0076] In another embodiment, please refer to Figure 3 , the first indoor heat exchanger 310 and the second indoor heat exchanger 320 are arranged side by side in the direction perpendicular to the air inlet direction of the indoor air duct 210, so that a part of the air flow entering from the indoor air inlet 510 blows to the first indoor heat exchanger 310 and the other part blows to the second indoor heat exchanger 320.

[0077] In this embodiment, the air inlet direction of the indoor-side air duct 210 is generally the front-back direction. Then, the directions perpendicular to the air inlet direction can be the left-right and up-down directions. In this way, the first indoor heat exchanger 310 and the second indoor heat exchanger 320 can be arranged vertically or horizontally. The fresh air or indoor air entering from the indoor air inlet 510 is partially heated / dehumidified by the first indoor heat exchanger 310, and the other part is dehumidified / heated by the second indoor heat exchanger 320. Then, they are mixed in the indoor-side air duct 210 to form a dry air flow with a suitable temperature, and then the indoor fan sends the constant-temperature dry air flow into the room from the indoor air outlet, achieving constant-temperature dehumidification throughout the house. When the first indoor heat exchanger 310 and the second indoor heat exchanger 320 are arranged vertically, only one indoor heat exchanger can be set, and its upper part is divided into the first indoor heat exchanger 310, and its lower part is divided into the second indoor heat exchanger 320. By controlling the valve, one of the upper heat exchanger and the lower heat exchanger is in the heat exchange mode, and the other is in the refrigeration mode. In this way, the occupied space of the indoor-side heat exchanger 300 can be greatly reduced, making the overall structure more compact and the volume of the whole machine smaller. By arranging the first indoor heat exchanger 310 and the second indoor heat exchanger 320 vertically or horizontally, the thickness of the indoor-side heat exchanger 300 can be greatly reduced, making full use of the space in the height direction of the housing 500, thereby reducing the occupied space of the indoor-side heat exchanger 300 and reducing the volume and weight of the whole machine.

[0078] In one embodiment, as Figure 10 shown, the window air conditioner further includes an outdoor heat exchanger 700, a refrigerant circulation pipeline, a first valve 810, and a second valve 820;

[0079] A discharge pipe 610 is provided at the refrigerant outlet of the compressor 600 of the window air conditioner, and a suction pipe 620 is provided at the refrigerant inlet;

[0080] The discharge pipe 610, the outdoor heat exchanger 700, the first indoor heat exchanger 310, the second indoor heat exchanger 320, and the suction pipe 620 are sequentially connected through the refrigerant circulation pipeline;

[0081] The first valve 810 is connected in series to the refrigerant circulation pipeline between the outdoor heat exchanger 700 and the first indoor heat exchanger 310, and the second valve 820 is connected in series to the refrigerant circulation pipeline between the first indoor heat exchanger 310 and the second indoor heat exchanger 320.

[0082] In this embodiment, the compressor 600 can be a variable-frequency compressor 600 or a fixed-frequency compressor 600. By making the compressor 600 a variable-frequency compressor 600, it is possible to better implement the refrigeration and constant-temperature dehumidification dual systems, saving one compressor 600, thus making the overall structure simpler, reducing costs and power, and greatly improving energy efficiency. The first valve 810 and the second valve 820 can be solenoid valves, electronic expansion valves or throttle valves, which can control the on / off or flow rate of the pipeline where they are located. By setting the first valve 810 and the second valve 820, it is possible to control whether the refrigerant flows into the first indoor heat exchanger 310 and the second indoor heat exchanger 320, thereby controlling whether the first indoor heat exchanger 310 and the second indoor heat exchanger 320 participate in refrigeration or heating.

[0083] When the dehumidification mode needs to be turned on, the high-temperature refrigerant flowing out of the compressor 600 enters the outdoor heat exchanger 700 (condenser). Thus, the high-temperature refrigerant coming out of the outdoor heat exchanger 700 reaches the first valve 810. At this time, the first valve 810 can be fully or mostly opened to make the temperature of the outdoor heat exchanger 700 equal to or slightly lower than the temperature of the first indoor heat exchanger 310. At this time, the first indoor heat exchanger 310 serves as a condenser, playing the role of heating the air flow. Then, the sub-high-temperature refrigerant flowing out of the first indoor heat exchanger 310 reaches the second valve 820. The second valve 820 is partially opened, playing the role of capillary throttling. After throttling, the refrigerant becomes a low-temperature refrigerant and flows through the second indoor heat exchanger 320. At this time, the second indoor heat exchanger 320 serves as an evaporator, playing the role of cooling, that is, dehumidifying. The refrigerant flowing out of the second indoor heat exchanger 320 then returns to the compressor 600. In this way, after the fresh air and the indoor air are mixed, part of them is heated by the first indoor heat exchanger 310, and part of them is cooled and dehumidified by the second indoor heat exchanger 320. After mixing in the indoor-side air duct 210, a dry air flow with a suitable temperature is formed and then blown out from the indoor air outlet, so as to achieve the purpose of dehumidifying the indoor environment without blowing cold air, and the dehumidification effect is better. Of course, the first indoor heat exchanger 310 can also serve as an evaporator, and the second indoor heat exchanger 320 can serve as a condenser, and the purpose of constant-temperature dehumidification can also be achieved.

[0084] When dehumidification is not required and only the full cooling mode needs to be turned on, the high-temperature refrigerant flowing out of the compressor 600 enters the outdoor heat exchanger 700 (condenser), so that the high-temperature refrigerant coming out of the outdoor heat exchanger 700 reaches the first valve 810. At this time, a small part of the first valve 810 is opened to play a capillary flow, so that the temperature of the first indoor heat exchanger 310 is much lower than the temperature of the outdoor heat exchanger 700. At this time, the first indoor heat exchanger 310 is an evaporator, which plays a role in cooling. Then the low-temperature refrigerant flowing out of the first indoor heat exchanger 310 reaches the second valve 820. The second valve 820 is fully or mostly opened, which plays a role of full passage or re-throttling. The refrigerant passing through the second valve 820 flows through the second indoor heat exchanger 320. At this time, the second indoor heat exchanger 320 is an evaporator, which plays a role of secondary cooling. The refrigerant flowing out of the second indoor heat exchanger 320 returns to the compressor 600. In this way, the fresh air and indoor air are mixed and cooled through the first indoor heat exchanger 310, and then cooled again through the second indoor heat exchanger 320, and then blown out from the indoor air outlet after entering the indoor side air duct 210, thereby achieving the purpose of rapid indoor cooling.

[0085] In one embodiment, if Figure 11 As shown, the refrigerant circulation pipeline includes a first pipe 830 connecting the discharge pipe 610 and the outdoor heat exchanger 700, and a second pipe 840 connecting the suction pipe 620 and the second indoor heat exchanger 320; the window air conditioner also includes a switching device 900;

[0086] The switching device 900 is connected in series to the first pipe 830 and the second pipe 840, and the switching device 900 has a first switching state and a second switching state;

[0087] In the first switching state, the first pipe 830 connected to both ends of the switching device 900 is conductive, and the second pipe 840 connected to both ends of the switching device 900 is conductive;

[0088] In the second switching state, the first pipe 830 between the discharge pipe 610 and the switching device 900 is connected to the second pipe 840 between the switching device 900 and the second indoor heat exchanger 320, and the first pipe 830 between the outdoor heat exchanger 700 and the switching device 900 is connected to the second pipe 840 between the suction pipe 620 and the switching device 900.

[0089] In this embodiment, it can be understood that the window air conditioner further includes a controller, which is electrically connected to the first valve 810, the second valve 820, and the switching device 900, so as to control the switching state of the switching device 900 and the opening and closing of each valve. The switching device 900 can be a four-way valve or other switching device 900 that prevents the refrigerant from entering the outdoor heat exchanger 700 and the second indoor heat exchanger 320 simultaneously. Through the switching device 900, the functions of the air conditioner can be increased. It can be understood that the switching device 900 is connected in series on the first pipe 830 and the second pipe 840, that is, both ends of the switching device 900 are connected to the first pipe 830, and both ends are connected to the second pipe 840.

[0090] When the switching device 900 is in the first switching state, the high-temperature refrigerant flowing out of the discharge pipe 610 of the compressor 600 flows through the first pipe 830 to the outdoor heat exchanger 700, then sequentially flows into the first indoor heat exchanger 310 and the second indoor heat exchanger 320, and finally flows back to the compressor 600 through the second pipe 840 and the suction pipe 620. By controlling the opening degrees of the first valve 810 and the second valve 820, the first indoor heat exchanger 310 can be controlled to be in a refrigeration state or a heating state, so as to control the entire system to be in a constant temperature dehumidification mode or a full refrigeration system. The first valve 810 and the second valve 820 control whether the first indoor heat exchanger 310 is in a refrigeration state or a heating state, which is similar to the embodiment without a switching state described above and will not be elaborated here.

[0091] When the switching device 900 is in the second switching state, the high-temperature refrigerant flowing out of the discharge pipe 610 of the compressor 600 flows into the second indoor heat exchanger 320 through the first pipe 830 and the second pipe 840, then flows to the first indoor heat exchanger 310 and the outdoor heat exchanger 700, and finally flows back to the compressor 600 through the first pipe 830, the second pipe 840, and the suction pipe 620. By controlling the opening degrees of the first valve 810 and the second valve 820, the first indoor heat exchanger 310 can be controlled to be in a refrigeration state or a heating state, so as to control whether the entire system is in a constant temperature dehumidification mode or a full heating state.

[0092] When the full heating mode is turned on, the switching device 900 is in the second switching state. The high-temperature refrigerant flowing out of the discharge pipe 610 of the compressor 600 flows into the second indoor heat exchanger 320 through the first pipe 830 and the second pipe 840. At this time, the second indoor heat exchanger 320 functions as a condenser for heating. Thus, the high-temperature refrigerant coming out of the second indoor heat exchanger 320 reaches the second valve 820. At this time, the second valve 820 is fully opened, and the high-temperature refrigerant continues to flow out to the first indoor heat exchanger 310. The first indoor heat exchanger 310 functions to heat again. After the sub-high-temperature refrigerant reaches the first valve 810, the first valve 810 can function as a capillary throttle. After throttling, the refrigerant becomes a low-temperature refrigerant, flows through the outdoor heat exchanger 220, and then returns to the compressor 600. In this way, the purpose of rapid indoor heating can be achieved.

[0093] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept 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. A window air conditioner, characterized in that, Comprising: Chassis; Indoor air duct housing, installed on the front side of the chassis, and an indoor side air duct is formed inside the indoor air duct housing; Indoor side heat exchanger, installed on the chassis and corresponding to the air inlet end of the indoor side air duct; Fresh air device, installed on the chassis and used to convey fresh air into the room. The fresh air device includes a fresh air housing extending from the outdoor side to the indoor side. The fresh air housing is provided with a fresh air inlet communicating with the outdoor, a fresh air outlet communicating with the indoor, and a fresh air duct connecting the fresh air inlet and the fresh air outlet. The fresh air outlet is arranged adjacent to the windward surface of the indoor side heat exchanger; the fresh air outlet is directly communicated with the indoor; and Housing, installed on the chassis, the indoor air duct housing and the indoor side heat exchanger are located inside the housing, and an indoor air inlet is provided on the front side wall surface of the housing. The indoor side heat exchanger is arranged corresponding to the indoor air inlet; Part of the fresh air housing is located between the lower end of the indoor air duct housing and the chassis; the fresh air housing has an air outlet section, and the fresh air housing also has an air inlet section, an arc section and a connection section. The air inlet section, the arc section, the connection section and the air outlet section are connected in sequence. The connection section is located between the lower end of the indoor air duct housing and the chassis, and the air passing area of the connection section is smaller than that of the arc section; the arc section includes a connected transition area and a buffer area. The transition area is connected to the air inlet section, the buffer area is connected to the connection section. The transition area is arranged in a gradually expanding manner from the air inlet section to the buffer area, and the buffer area is arranged in a gradually shrinking manner from the transition area to the connection section; the air outlet section is located outside the front side wall surface of the housing, and the fresh air outlet is arranged adjacent to the indoor air inlet.

2. The window air conditioner according to claim 1, characterized in that, The fresh air housing located below the indoor air duct housing is arranged at an interval from the lower end of the indoor air duct housing; the end of the air outlet section forms the fresh air outlet, and the opening of the fresh air outlet faces upward.

3. The window air conditioner according to claim 1, characterized in that The lower surface of the connection section is adapted to the chassis, and the upper surface is adapted to the lower end of the indoor air duct housing.

4. The window air conditioner according to claim 1, wherein, One side surface of the transition area is arranged in an inward concave arc shape, and the upper surface of the buffer area is arranged in an outward convex arc shape.

5. The window air conditioner according to any one of claims 1 to 2, characterized in that The opening of the fresh air outlet faces forward of the window air conditioner.

6. The window air conditioner according to claim 1, characterized in that, The window air conditioner further includes a compressor installed on the chassis, and the fresh air device and the compressor are respectively arranged on two sides in the length direction of the chassis.

7. The window air conditioner according to claim 1, characterized in that, The window air conditioner further includes a housing installed on the chassis. The indoor air duct housing and the indoor side heat exchanger are located inside the housing. The front side wall surface of the housing is provided with an indoor air inlet. The indoor side heat exchanger includes a first indoor heat exchanger and a second indoor heat exchanger arranged corresponding to the indoor air inlet. The window air conditioner has a constant temperature and dehumidification mode. In the constant temperature and dehumidification mode, one of the first indoor heat exchanger and the second indoor heat exchanger is in the heating mode, and the other is in the cooling mode.

8. The window air conditioner according to claim 7, characterized in that, The first indoor heat exchanger and the second indoor heat exchanger are arranged in a stacked manner along the air inlet direction of the indoor side air duct.

9. The window air conditioner according to claim 7, wherein, The first indoor heat exchanger and the second indoor heat exchanger are arranged side by side in a direction perpendicular to the air inlet direction of the indoor side air duct, so that a part of the air flow entering from the indoor air inlet blows towards the first indoor heat exchanger, and the other part blows towards the second indoor heat exchanger.

10. The window air conditioner according to any one of claims 7 to 9, characterized in that The window air conditioner further includes an outdoor heat exchanger, a refrigerant circulation pipeline, a first valve and a second valve; A discharge pipe is provided at the refrigerant outlet of the compressor of the window air conditioner, and a suction pipe is provided at the refrigerant inlet; The discharge pipe, the outdoor heat exchanger, the first indoor heat exchanger, the second indoor heat exchanger, and the suction pipe are sequentially connected through the refrigerant circulation pipeline; The first valve is connected in series to the refrigerant circulation pipeline between the outdoor heat exchanger and the first indoor heat exchanger, and the second valve is connected in series to the refrigerant circulation pipeline between the first indoor heat exchanger and the second indoor heat exchanger.

11. The window air conditioner according to claim 10, wherein, The refrigerant circulation pipeline includes a first pipe connecting the discharge pipe and the outdoor heat exchanger, and a second pipe connecting the suction pipe and the second indoor heat exchanger; the window air conditioner further includes a switching device; The switching device is connected in series to the first pipe and the second pipe, and the switching device has a first switching state and a second switching state; In the first switching state, the first pipe connected to both ends of the switching device is conducted, and the second pipe connected to both ends of the switching device is conducted; In the second switching state, the first pipe between the discharge pipe and the switching device is conducted with the second pipe between the switching device and the second indoor heat exchanger, and the first pipe between the outdoor heat exchanger and the switching device is conducted with the second pipe between the suction pipe and the switching device.

12. The window air conditioner according to claim 11, wherein, The window air conditioner further has a controller, and the controller is electrically connected to the switching device, the first valve and the second valve; When the window air conditioner is in the constant temperature and dehumidification mode, the controller is used to control the switching device to be in the first switching state, and is used to control the first valve to be fully opened and the second valve to be partially opened; and / or, The window air conditioner further has a full cooling mode. When the window air conditioner is in the full cooling mode, the controller is used to control the switching device to be in the first switching state, and is used to control the first valve to be partially opened and the second valve to be fully opened; and / or, The window air conditioner further has a full heating mode. When the window air conditioner is in the full heating mode, the controller is used to control the switching device to be in the second switching state, and is used to control the second valve to be fully opened and the first valve to be partially opened.

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