Window air conditioner

Abstract

The present invention discloses a window air conditioner, which includes a housing, an indoor heat exchanger, an indoor side enclosure and a fresh air housing. The housing is configured with an indoor air inlet and an indoor air outlet; the indoor heat exchanger is installed in the housing and corresponds to the indoor air inlet; the indoor side enclosure is installed in the housing, and the indoor side enclosure is configured with an indoor side air duct that communicates the air outlet side of the indoor heat exchanger and the indoor air outlet; the fresh air housing is installed in the housing, the fresh air housing is configured with a fresh air inlet, and a first fresh air outlet and a second fresh air outlet that communicate with the fresh air inlet, the first fresh air outlet is located on the air inlet side of the indoor heat exchanger, and the second fresh air outlet communicates with the indoor side air duct. The window air conditioner of the present invention provides a new fresh air housing air outlet mode, which can improve the air outlet effect of the fresh air housing.

Description

Technical Field

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

[0002] A window air conditioner is usually installed on the window frame of a wall for cooling or heating an indoor environment. With the demand for healthy air by people, there currently appears a window air conditioner with a fresh air function. Such a window air conditioner usually adds a fresh air housing inside its casing to introduce fresh air from the outdoor environment into the indoor environment through the fresh air housing. However, the air outlet mode of this conventional fresh air housing is single, resulting in poor air outlet effect of the fresh air housing. Summary of the Invention

[0003] The main object of the present invention is to provide a window air conditioner, aiming to provide a new air outlet mode for the fresh air housing and improve the air outlet effect of the fresh air housing.

[0004] To achieve the above object, the present invention provides a window air conditioner. The window air conditioner includes a casing, an indoor heat exchanger, an indoor side panel and a fresh air housing. Among them, the casing is configured with an indoor air inlet and an indoor air outlet; the indoor heat exchanger is installed inside the casing and corresponds to the indoor air inlet; the indoor side panel is installed inside the casing, and the indoor side panel is configured with an indoor side air duct connecting the air outlet side of the indoor heat exchanger and the indoor air outlet; the fresh air housing is installed inside the casing, and the fresh air housing is configured with a fresh air inlet, and a first fresh air outlet and a second fresh air outlet communicating with the fresh air inlet. Among them, the first fresh air outlet is located on the air inlet side of the indoor heat exchanger, and the second fresh air outlet communicates with the indoor side air duct.

[0005] Optionally, the fresh air housing includes an air inlet part provided with the fresh air inlet, an air outlet part located between the indoor heat exchanger and the indoor air inlet, and a wind guiding part connecting the air inlet part and the air outlet part; among them, the first fresh air outlet is provided on the air outlet part; the second fresh air outlet is provided on the wind guiding part.

[0006] Optionally, the wind guiding part has a wind guiding wall that transitions in an arc shape from the top wall of the air inlet part downward to the top wall of the air outlet part; the second fresh air outlet is opened on the wind guiding wall of the wind guiding part.

[0007] Optionally, the wind guiding part is located at the rear side of the indoor side panel; an installation opening is provided on the rear wall panel of the indoor side panel; the second fresh air outlet of the wind guiding part extends into the interior of the indoor side panel from the installation opening and communicates with the indoor side air duct.

[0008] Optionally, the air guiding wall of the air guiding part is provided with an installation slot located above the second fresh air outlet. The installation slot is consistent with the extending direction of the upper side edge of the second fresh air outlet, and the installation slot is adapted to allow the upper side edge of the installation opening or a plug board located above the installation opening to be inserted.

[0009] Optionally, the fresh air housing further includes an air guiding part for communicating the air guiding part and the air outlet part. The air guiding part is arranged in a flat shape and passes through below the indoor heat exchanger from the air guiding part and is connected to the lower end of the air outlet part.

[0010] Optionally, the first fresh air outlet is opened towards the indoor air inlet; alternatively, the first fresh air outlet is opened towards the air inlet surface of the indoor heat exchanger; alternatively, the first fresh air outlet is opened upwards.

[0011] Optionally, the window air conditioner further includes a first air guiding member arranged at the first fresh air outlet for guiding the fresh air passing through the first fresh air outlet to blow obliquely downwards into the indoor room.

[0012] Optionally, the air outlet part has an upper wall board at its top, and the front side edge of the upper wall board forms the upper edge of the first fresh air outlet; the plate surface of the upper wall board inclines downwards from its rear side edge to its front side edge so that the upper wall board forms the first air guiding member.

[0013] Optionally, the indoor air inlet is provided with a plurality of air inlet louvers arranged at intervals in the up-down direction. The air inlet louver located at the lower end of the indoor air inlet corresponds to the first fresh air outlet, and the blade surface of this air inlet louver inclines downwards from back to front.

[0014] Optionally, the rear edge of at least one of the air inlet louvers corresponds to the front side edge of the upper wall board of the air outlet part, and the inclination angle of this air inlet louver is the same as the inclination angle of the upper wall board.

[0015] Optionally, the included angle between the plate surface of the upper wall board of the air outlet part and the horizontal plane is not less than 15° and not more than 60°.

[0016] Optionally, the fresh air housing further includes a wind blocking plate constructed on the air outlet part. The wind blocking plate is located at or near the upper side edge of the first fresh air outlet and extends along the length direction of the upper side edge of the first fresh air outlet.

[0017] Optionally, the window air conditioner further includes an air inlet filter screen arranged between the indoor heat exchanger and the indoor air inlet; the wind blocking plate is located at the rear side of the air inlet filter screen, and the front plate surface of the wind blocking plate abuts against the rear side surface of the air inlet filter screen.

[0018] Optionally, the window air conditioner further includes an air duct housing disposed within the indoor side panel to form the indoor side air duct. An air supply opening is formed in the air duct housing, and the air supply opening communicates the second fresh air outlet with the indoor side air duct.

[0019] Optionally, the window air conditioner further includes a second air guiding member disposed at the air supply opening for guiding air to the indoor blower.

[0020] Optionally, the second air guiding member is a wind guiding plate disposed at the air supply opening, and the plate surface of the wind guiding plate is inclined from its lower side edge to its upper side edge towards the indoor blower; or,

[0021] the second air guiding member is a wind guiding cylinder protruding from the inner periphery of the air supply opening, and the outlet of the wind guiding cylinder faces the indoor blower.

[0022] Optionally, the number of the wind guiding plates is multiple, and the multiple wind guiding plates are arranged at intervals in the up-down direction of the air supply opening, and the inclination directions of the plate surfaces of the multiple wind guiding plates are the same.

[0023] Optionally, the air supply opening is composed of multiple strip-shaped ventilation holes arranged vertically; the multiple wind guiding plates respectively correspond to the multiple strip-shaped ventilation holes, and the lower side edge of each wind guiding plate is connected to the lower edge of its corresponding strip-shaped ventilation hole.

[0024] Optionally, the angle formed by the plate surface of the wind guiding plate and the horizontal plane is not less than 30° and not more than 75°.

[0025] Optionally, the second air guiding member is integrally formed with the air duct housing.

[0026] Optionally, the window air conditioner further includes a first air damper constructed at the first fresh air outlet, and the first air damper is movable relative to the first fresh air outlet to open and close the first fresh air outlet; and / or,

[0027] the window air conditioner further includes a second air damper constructed at the second fresh air outlet, and the second air damper is movable relative to the second fresh air outlet to open and close the second fresh air outlet.

[0028] Optionally, the window air conditioner further includes a fresh air blower installed within the fresh air housing, and the fresh air blower is located between the fresh air inlet and the second air outlet.

[0029] Optionally, the window air conditioner further includes a filter element installed within the fresh air housing, and the filter element is located between the fresh air inlet and the fresh air blower; or, the filter element is located between the fresh air blower and the second air outlet.

[0030] In the technical solution of the present invention, a fresh air housing is installed inside the casing of a window air conditioner. The fresh air housing is configured with a fresh air inlet, a first fresh air outlet, and a second fresh air outlet that communicate with the fresh air inlet. Among them, the first fresh air outlet is located on the air inlet side of the indoor heat exchanger, and the second fresh air outlet communicates with the indoor air duct, so that the first fresh air outlet and the second fresh air outlet of the fresh air housing are used to realize the delivery of fresh air through two air outlets. This fresh air housing air outlet method can not only greatly increase the fresh air intake volume and improve the air outlet effect of the fresh air housing, but also form an upper and lower layer air flow circulation, accelerate the air flow, drive more fresh air into the room, and effectively improve the air replacement efficiency of the indoor air flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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 following drawings 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.

[0032] Figure 1 It is the front view of an embodiment of the window air conditioner of the present invention;

[0033] Figure 2 It is Figure 1 the right view of the window air conditioner in

[0034] Figure 3 It is Figure 2 the left view of the window air conditioner in

[0035] Figure 4 It is Figure 1 the top view of the window air conditioner after removing the outer shell in

[0036] Figure 5 It is Figure 4 the sectional view along the line I-I in

[0037] Figure 6 It is Figure 5 the enlarged view at A in

[0038] Figure 7 It is Figure 5 the enlarged view at B in

[0039] Figure 8 It is Figure 4 the schematic diagram of another perspective of the window air conditioner in

[0040] Figure 9 It is Figure 8 the assembly drawing of the chassis and the fresh air housing of the window air conditioner in

[0041] Figure 10 Schematic structural diagram of a fresh air housing of a window air conditioner according to an embodiment of the present invention;

[0042] Figure 11 is Figure 10 Schematic diagram of another perspective of the fresh air housing in

[0043] Figure 12 is Figure 11 Enlarged view of part C in

[0044] Figure 13 is Figure 11 Enlarged view of part D in

[0045] Figure 14 is Figure 8 Assembly drawing of the chassis, fresh air housing and air duct housing of the window air conditioner in

[0046] Figure 15 is Figure 14 Enlarged view of part E in

[0047] Figure 16 Schematic principle diagram of a window air conditioner according to an embodiment of the present invention;

[0048] Figure 17 Schematic principle diagram of another embodiment of the window air conditioner according to the present invention.

[0049] Explanation of reference numerals in the drawings:

[0050]

[0051]

[0052] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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.

[0054] 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, 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.

[0055] In addition, if the embodiments of the present invention involve descriptions such as "first" and "second", the descriptions of "first", "second", etc. are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] Figures 1 to 17 The accompanying drawings are for embodiments of the window air conditioner of the present invention. In the embodiments of the window air conditioner provided by the present invention, the window air conditioner is integrally formed with an indoor unit and an outdoor unit, and the whole window air conditioner is installed on the window frame of a building, and can realize refrigeration or heating of the indoor environment. The window air conditioner can also provide a new air outlet mode of the fresh air housing, improving the air outlet effect of the fresh air housing. The embodiments of the window air conditioner will be introduced and described below.

[0057] Please refer to Figures 1 to 3 , in an embodiment of the window air conditioner 100 of the present invention, the window air conditioner 100 includes a housing 110, an indoor side panel 160, and an indoor heat exchanger 120; wherein, the housing 110 is configured with an indoor air inlet 103 and an indoor air outlet 104; the indoor heat exchanger 120 is installed in the housing 110 and corresponds to the indoor air inlet 103; the indoor side panel 160 is installed in the housing 110, and the indoor side panel 160 is configured with an indoor side air duct 105 that communicates the air outlet side of the indoor heat exchanger 120 and the indoor air outlet 104. The window air conditioner 100 further includes a fresh air housing 200, the fresh air housing 200 is installed in the housing 110, the fresh air housing 200 is configured with a fresh air inlet 201, and a first fresh air outlet 202 and a second fresh air outlet 203 (as Figure 10 shown) that communicate with the fresh air inlet 201; wherein, the first fresh air outlet 202 is located on the air inlet side of the indoor heat exchanger 120, and the second fresh air outlet 203 communicates with the indoor side air duct 105.

[0058] For the housing 110, the housing 110 includes a chassis 111 and a casing 112 mounted on the chassis 111. The casing 112 has a front surface, a back surface, side surfaces and a top surface. The top surface can be a horizontally designed plane as a whole, or can be composed of a plane and an inclined surface connected to the front end of the plane. Here, an indoor air inlet 103 is provided on the front surface of the casing 112, and an indoor air outlet 104 is provided at the front end (i.e., the inclined surface) of the top surface of the housing 110. An outdoor air inlet is provided on the back surface of the casing 112, and an outdoor air outlet is provided on the side surface of the housing 110.

[0059] According to the state of the window air conditioner 100 when installed in a window, the housing 110 can be divided into an indoor part 102 and an outdoor part 101. When the window air conditioner 100 is installed at a window, the indoor part 102 of the housing 110 corresponds to the indoor room, and the outdoor part 101 corresponds to the outdoor environment. The window air conditioner 100 further includes an outdoor heat exchanger 130, an outdoor fan 150, an indoor fan 140 and a compressor 180. Among them, the outdoor heat exchanger 130, the outdoor fan 150 and the compressor 180 are all located in the outdoor part 101 of the housing 110. The outdoor heat exchanger 130 corresponds to the outdoor air inlet. The outdoor fan 150 is installed in the air duct enclosure 170 provided in the outdoor part 101 and is located on the air outlet side of the outdoor heat exchanger 130; the indoor heat exchanger 120 and the indoor fan 140 are located in the indoor part 102 of the housing 110.

[0060] When the window air conditioner 100 is turned on in the cooling or heating mode, the air in the indoor room is driven by the indoor fan 140 to enter the indoor part 102 from the indoor air inlet 103, then passes through the indoor heat exchanger 120 and exchanges heat. The air after heat exchange enters the indoor side air duct 105, and finally is driven by the indoor fan 140 to be blown out from the indoor air outlet 104, realizing cooling or heating of the indoor room; at the same time, the air in the outdoor environment is driven by the outdoor fan 150 to enter the outdoor part 101 from the outdoor air inlet, then passes through the outdoor heat exchanger 130 and exchanges heat. The air after heat exchange enters the outdoor side air duct, and finally is driven by the outdoor fan 150 to be blown out from the outdoor air outlet.

[0061] For the fresh air housing 200, the fresh air housing 200 can be installed on the left or right side of the housing 110. The fresh air housing 200 extends from the outdoor part 101 of the housing 110 to its indoor part 102. The fresh air inlet 201 of the fresh air housing 200 is adapted to communicate with the outdoor environment. The first fresh air outlet 202 and the second fresh air outlet 203 of the fresh air housing 200 are adapted to supply fresh air to the indoor room; among them, the first fresh air outlet 202 is located between the air inlet surface of the indoor heat exchanger 120 and the indoor air inlet 103, so that the fresh air flow blown out from the first fresh air outlet 202 can directly be blown out from the indoor air inlet 103 to the indoor room (such asFigure 5 In F 1 As shown, part of the air flow will flow back to the indoor side air duct 105 from the air inlet surface of the indoor heat exchanger 120 together with the indoor air (as Figure 5 In F 3 shown); the air flow blown out from the second fresh air outlet 203 directly enters the indoor side air duct 105, that is, the air outlet side of the indoor heat exchanger 120 (as Figure 5 In F 2 shown). A fresh air duct 204 is formed inside the fresh air housing 200, and the fresh air duct 204 connects the fresh air inlet 201, the first fresh air outlet 202, and the second fresh air outlet 203.

[0062] Please refer to Figure 5 and Figure 10 When the window air conditioner 100 is turned on in the fresh air mode, the fresh air from the outdoor environment enters the fresh air duct 204 inside the fresh air housing 200 from the fresh air inlet 201, and then splits into two fresh air flows in the fresh air duct 204. The two air flows are respectively blown out from the first fresh air outlet 202 and the second fresh air outlet 203. As can be seen from the foregoing description, the air flow blown out from the first fresh air outlet 202 flows downward to the lower layer of the indoor space; while the air flow blown out from the second fresh air outlet 203 is driven by the indoor fan 140 and flows through the indoor side air duct 105 and the indoor side air outlet to the middle and upper layers of the indoor space, so that there is fresh air in the upper, middle, and lower layers of the indoor space, improving the distribution of fresh air in the room. Furthermore, after the air flow blown out from the second fresh air outlet 203 is mixed with the heat-exchanged air flow and blown out from the indoor side air outlet, it will flow downward to the lower layer space, and then push the air flow in the lower layer space to flow toward the indoor air inlet 103, thereby forming an upper and lower air flow cycle, which can accelerate the air flow and drive more fresh air to enter the room from the fresh air housing 200, increasing the air replacement efficiency of the indoor air flow.

[0063] Among them, the first fresh air flow is blown out from the first fresh air outlet 202. This first fresh air flow can be blown out from the indoor air inlet 103 to the outside, and then flow back into the indoor heat exchanger 120 from the indoor air inlet 103, pass through the indoor heat exchanger 120 and be heat-exchanged, and then enter the indoor side air duct 105; or, this first fresh air flow can also directly enter the indoor heat exchanger 120 from the air inlet side of the indoor heat exchanger 120, and then enter the indoor side air duct 105 after being heat-exchanged by the indoor heat exchanger 120. The second fresh air flow directly enters the indoor side air duct 105 through the second fresh air outlet 203, and is mixed evenly with the air after heat exchange from the indoor heat exchanger 120 in the indoor side air duct 105, and finally blown out from the indoor air outlet 104. During this process, the second fresh air flow does not pass through the indoor heat exchanger 120.

[0064] The technical solution of the present invention is to install a fresh air housing 200 inside the housing 110 of the window air conditioner 100. The fresh air housing 200 is configured with a fresh air inlet 201, a first fresh air outlet 202 and a second fresh air outlet 203 that communicate with the fresh air inlet 201. Among them, the first fresh air outlet 202 is located on the air inlet side of the indoor heat exchanger 120, and the second fresh air outlet 203 communicates with the indoor air duct 105, so that the first fresh air outlet 202 and the second fresh air outlet 203 of the fresh air housing 200 are used to realize double-air-port fresh air delivery. This fresh air housing 200 air outlet mode can not only greatly increase the fresh air intake volume and improve the air outlet effect of the fresh air housing 200, but also form an upper and lower layer air flow cycle (see the foregoing introduction for details), accelerate the air flow, drive more fresh air into the room, and effectively improve the air replacement efficiency of the indoor air flow.

[0065] Please refer to Figures 4 to 8 In an embodiment, the fresh air housing 200 includes an air inlet part 210 provided with the fresh air inlet 201, an air outlet part 240 located between the indoor heat exchanger 120 and the indoor air inlet 103, and a wind guiding part 220 that connects the air inlet part 210 and the air outlet part 240. Among them, a fresh air inlet 201 is provided at one end of the air inlet part 210 away from the air outlet part 240; a first fresh air outlet 201 is provided in the air outlet part 240; and a second fresh air outlet 203 is provided in the wind guiding part 220.

[0066] Specifically, the fresh air housing 200 extends from the outdoor part 101 of the housing 110 to its indoor part 102. Since the length of the outdoor heat exchanger 130 is shorter and it occupies less space in the length direction of the housing 110, while the length of the indoor heat exchanger 120 is longer and it occupies more space in the length direction of the housing 110, the air inlet part 210 of the fresh air housing 200 is provided at one end of the outdoor heat exchanger 130, and the air outlet part 240 of the fresh air housing 200 penetrates forward from below the indoor heat exchanger 120, and the wind guiding part 220 of the fresh air housing 200 is located between the outdoor heat exchanger 130 and the indoor heat exchanger 120. Constructing the fresh air inlet 201 at one end of the air inlet part 210 away from the air outlet part 240 can make the fresh air inlet 201 correspond to the outdoor air inlet on the back of the housing 112, so that outdoor fresh air can directly enter the fresh air inlet 201 from the outdoor air inlet.

[0067] Please refer to Figures 5 to 9, for the shape and structure of the fresh air casing 200, there can be various shape design methods. For example, the fresh air casing 200 can be designed in a straight tube shape or a tapered shape. Here, it is considered that if the fresh air casing 200 is designed in a straight tube shape, the ventilation cross-section of the fresh air duct 204 inside the fresh air casing 200 is basically the same in the air flow direction. Then, as the air flows from the outside to the inside in the fresh air casing 200, the air pressure gradually decreases, resulting in a decrease in the fresh air speed, and further leading to a small fresh air volume.

[0068] In view of this, in this embodiment, the through-slit cross-section of the air outlet part 240 of the fresh air casing 200 is smaller than the ventilation cross-section of the air inlet part 210, so that during the process of the air flow entering from the air inlet part 210 into the air outlet part 240, the air flow is squeezed and compressed into the air outlet part 240. The fresh air inside the air outlet part 240 is squeezed, causing the air pressure to increase. The fresh air with a higher air pressure quickly flows to each fresh air outlet, enabling the fresh air to obtain a higher speed, and then quickly blowing out from each fresh air outlet, effectively increasing the fresh air volume.

[0069] Please refer to Figure 5 , Figure 10 and Figure 11 , for the convenience of the air outlet part 240 to pass through below the indoor heat exchanger 120, optionally, the fresh air casing 200 further includes an air guiding part 220 and an air guiding part 230 connecting the air outlet part 240. The air guiding part 230 is arranged in a flat shape. The air guiding part 230 passes through below the indoor heat exchanger 120 from the air guiding part 220 and is connected to the lower end of the air outlet part 240, and a first fresh air outlet 202 is formed at the upper end of the air outlet part 240.

[0070] Specifically, the air guiding part 230 and the air outlet part 240 are arranged in an L shape. The air guiding part 230 diverts a part of the air flow in the air guiding part 220 to the air outlet part 240, and then flows upward through the air outlet part 240 to be blown out from the first fresh air outlet 202.. Among them, setting the air guiding part 230 in a flat shape can make the thickness of the air guiding part 230 smaller, so that the air guiding part 230 can be embedded between the chassis 111 of the casing 110 and the bottom of the indoor heat exchanger 120. In addition, such a design can also make the air guiding part 230 narrower than the air inlet part 210, which helps to increase the air pressure in the air guiding part 230, and further can drive the air flow to blow out at an accelerated speed.

[0071] As for the orientation of the first fresh air outlet 202, there can be various design methods. For example, the first fresh air outlet 202 is opened towards the indoor air inlet 103 to directly blow fresh air to the outside of the indoor air inlet 103. For another example, the first fresh air outlet 202 is opened towards the air inlet surface of the indoor heat exchanger 120, which can also increase the fresh air volume flowing back from the indoor heat exchanger 120. For yet another example, the first fresh air outlet 202 is opened upward to blow the air flow upward to reach between the indoor heat exchanger 120 and the indoor side air inlet, and then naturally flow towards the indoor heat exchanger 120 or the indoor side air inlet.

[0072] Specifically here, the first fresh air outlet 202 is opened towards the indoor air inlet 103, and the first fresh air outlet 202 should be close to the lower end of the indoor air inlet 103 to prevent a large amount of it from being sucked into the inside of the casing 110 by the suction of the indoor air inlet 103, thereby ensuring that more air flow blown out from the first fresh air outlet 202 is blown out to the lower space of the indoor room.

[0073] Please continue to refer to Figure 5 、 Figure 10 and Figure 11 In an embodiment, considering that the cross-sectional area of the through slot of the air outlet part 240 is smaller than the ventilation cross-sectional area of the air inlet part 210, if there is a sudden change in the cross-sectional area between the air inlet part 210 and the air outlet part 240 (similar to a cliff-like decrease in the cross-sectional area from the air inlet part 210 to the air outlet part 240), a large wind resistance will be formed at the position of this sudden change in the cross-sectional area, which is not conducive to the air flow. Therefore, the air inlet part 210 can be gradually transitioned to the air outlet part 240 through the air guiding part 220, so that the ventilation cross-sectional area of the fresh air casing 200 gradually decreases from the air guiding part 220 to the air outlet part 240, thereby avoiding a sudden change in the cross-sectional area between the first air outlet part 240 of the air inlet section and the air outlet section, and further avoiding the formation of a large wind resistance at this position, so that the air flow can smoothly enter the air outlet section from the air inlet section.

[0074] In view of the fact that the air outlet part 240 is designed in a flat shape, the air guiding part 220 has a guiding wall 221 that is arc-shaped and transitions downward from the top wall of the air inlet part 210 to the top wall of the air outlet part 220, and a contraction opening is formed at the end of the air guiding part 220. The air flow blown into the air guiding part 220 from the air inlet part 210 is guided by the guiding wall 221 to flow obliquely downward to the contraction opening, and then enters the air outlet part 240 from the contraction opening and is finally blown out from the air outlet part 240. During this process, the air flow is gradually squeezed, resulting in an increase in the air flow velocity.

[0075] Based on this, by opening the second fresh air outlet 203 on the air guiding wall 221, the fresh air flow can be quickly diverted into the indoor side air duct 105, effectively increasing the fresh air volume of the second fresh air outlet 203. Of course, in other embodiments, the second fresh air outlet 203 can also be arranged on the top wall of the horizontal section 231 (in this case, a corresponding air duct needs to be opened in the water receiving tray above the horizontal section 231).

[0076] Further, the air guiding part 220 is located at the rear side of the indoor side enclosure 160; an installation opening is provided on the rear wall plate 161 of the indoor side enclosure 160; the second fresh air outlet 203 of the air guiding part 220 extends into the interior of the indoor side enclosure 160 from the installation opening and is communicated with the indoor side air duct 105.

[0077] Please refer to Figure 5 、 Figure 11 and Figure 13 Optionally, the air guiding wall 221 of the air guiding part 220 is provided with an installation slot 222 located above the second fresh air outlet 203. The installation slot 222 is consistent with the extending direction of the upper side edge of the second fresh air outlet 203, and the installation slot 222 is suitable for inserting the upper side edge of the installation opening or a plug board located above the installation opening. Specifically, the air guiding wall 221 is convexly provided with an installation rib 223, and the installation rib 223 extends along the length direction of the upper side edge of the second fresh air outlet 203, and the installation slot 222 is arranged on the installation rib 223. During assembly, the upper side edge of the installation opening side of the indoor side enclosure 160 can be inserted into the installation slot 222. In addition to fixing the fresh air shell 200, a sealing structure can also be formed to prevent the fresh air blown out from the second fresh air outlet 203 from leaking upward. Or, a plug board located above the installation opening is constructed on the rear wall plate 161 of the indoor side enclosure 160, and the plug board is inserted into the installation slot 222, and a sealing structure can also be formed.

[0078] Please refer to Figure 5 and Figure 6 Based on any of the above embodiments, when the window air conditioner 100 is in the fresh air mode, the fresh air in the outdoor environment enters the fresh air duct inside the fresh air shell 200 from the fresh air inlet 201, and then blows forward from the first fresh air outlet 202. The blown fresh air is delivered forward from the lower part of the indoor air inlet 103 to the indoor room, and the fresh air volume of the lower layer space of the indoor room can be supplemented. Then, the fresh air is mixed with the air flow in the indoor room, and then returns through the upper and middle parts of the indoor air inlet 103 and exchanges heat through the indoor heat exchanger 120. After heat exchange, it blows to the middle and upper layer space of the room from the indoor air outlet 104, thus forming a fresh air flow circulating up and down. When the fresh air passes through the indoor heat exchanger 120, not only the temperature of the fresh air can be adjusted, but also the humidity of the fresh air can be adjusted to achieve a dehumidification effect.

[0079] Based on this, in order to solve the problem that the fresh air blown out from the first fresh air outlet 202 flows back from the air inlet side of the indoor heat exchanger 120 before being blown into the indoor room, the window air conditioner 100 further includes a first air guiding member 242. The first air guiding member 242 is disposed at the first fresh air outlet 202 to guide the fresh air passing through the first fresh air outlet 202 to blow obliquely downward into the indoor room. That is to say, the fresh air blown out from the first fresh air outlet 202 has a tendency to flow obliquely downward. Therefore, the fresh air blown out from the first fresh air outlet 202 will directly flow obliquely downward from the lower end of the indoor air outlet into the indoor room, and it is not easy to flow upward to the air inlet side of the indoor heat exchanger 120. Furthermore, it is not easy to directly flow back from the indoor heat exchanger 120 to the inside of the window air conditioner, ensuring that the fresh air housing 200 can supply sufficient fresh air to the indoor room in a timely manner.

[0080] In the previous embodiment, by installing a fresh air housing 200 inside the housing 110 of the window air conditioner 100, the fresh air housing 200 is provided with a fresh air inlet 201 and a first fresh air outlet 202. The fresh air inlet 201 is communicated with the outdoor environment, and the first fresh air outlet 202 is located between the indoor heat exchanger 120 and the indoor air inlet 103. Thus, the fresh air can be directly sent forward to the indoor environment through the first fresh air outlet 202. Moreover, a first air guiding member 242 is provided at the first fresh air outlet 202. When delivering fresh air to the indoor room through the first fresh air outlet 202, the first air guiding member 242 is used to guide the fresh air to flow obliquely downward into the indoor room, thereby preventing the fresh air from flowing upward to the air inlet side of the indoor heat exchanger 120. Furthermore, it can prevent the fresh air from directly flowing back from the indoor heat exchanger to the inside of the window air conditioner, ensuring that the fresh air housing 200 can supply sufficient fresh air to the indoor room in a timely manner.

[0081] As for the shape and structure of the first air guiding member 242, there can be various design types. For example, but not limited to: the first air guiding member 242 is a wind guiding plate designed to be inclined forward from the rear, or a wind guiding flange extending obliquely downward from the upper edge of the first fresh air outlet 202, or a wind guiding cylinder extending obliquely downward from the periphery of the first fresh air outlet 202. There will be a detailed introduction later.

[0082] Please refer to Figure 5 and Figure 6 and Figure 11 and Figure 12 , further, the air outlet part 240 has an upper wall plate 242 at its top. The front side edge of the upper wall plate 242 forms the upper edge of the first fresh air outlet 202; the plate surface of the upper wall plate 242 is inclined downward from its rear side edge to its front side edge, so that the upper wall plate 242 forms the first air guiding member 242. When the fresh air flows upward along the air outlet part 240 to the top of the air outlet part 240, the fresh air will be guided by the upper wall plate 242 of the air outlet part 240 to flow obliquely downward, so as to be sent obliquely downward from the first fresh air outlet 202 to the indoor room.

[0083] Please refer to Figure 5 and Figure 6 In one embodiment, the indoor air inlet 103 is further provided with a plurality of air inlet louvers 106 arranged at intervals in the up-down direction. The air inlet louver 106 at the lower end of the indoor air inlet 103 corresponds to the first fresh air outlet 202, and the blade surface of the air inlet louver 106 inclines downward from the rear to the front.

[0084] Specifically, the blade surfaces of the plurality of air inlet louvers 106 all incline downward from the rear to the front, and a louver gap is formed between any two air inlet louvers 106 or between the air inlet louver 106 and the side edge of the indoor air inlet 103. Among them, the louver gap formed between the lowermost air inlet louver 106 and the lower side edge of the indoor air inlet 103 connects the first fresh air outlet 202 and the indoor room.

[0085] When the window air conditioner 100 operates, the air flow in the indoor room obliquely enters the interior of the window air conditioner 100 from the louver gap in the upper-middle part of the indoor air inlet 103; while the fresh air blown obliquely downward from the first fresh air outlet 202 of the fresh air housing 200 passes through the louver gap at the lowermost side of the indoor air inlet 103 and enters the indoor room. During this process, since the blade surface of the air inlet louver 106 corresponding to the first fresh air outlet 202 inclines downward from the rear to the front, the fresh air guided by the first air guiding member 242 at the first fresh air outlet 202 to be blown obliquely downward will continue to be guided by this air inlet louver 106 to flow obliquely downward, and it is not easy to diffuse during the blowing process, realizing directional blowing obliquely downward to ensure that the fresh air can be blown to the indoor room.

[0086] Please refer to Figure 5 and Figure 6 In one embodiment, the rear leaf edge of at least one of the air inlet louvers 106 corresponds to the front side edge of the upper wall plate 242 of the air outlet part 240, and the inclination angle of the air inlet louver 106 may be the same as or different from the inclination angle of the upper wall plate 242, as long as the air guiding directions of the two are the same. Optionally, the rear leaf edge of at least one of the air inlet louvers 106 corresponds to the front side edge of the upper wall plate 242 of the air outlet part 240, and the inclination angle of the air inlet louver 106 is the same as the inclination angle of the upper wall plate 242. The cooperation of the two can effectively extend the air guiding path for guiding the fresh air to be blown obliquely downward.

[0087] As for the inclination angle of the upper wall plate 242 of the air outlet part 240, there is no specific limitation here. Optionally, the included angle formed by the plate surface of the upper wall plate 242 of the air outlet part 240 and the horizontal plane is not less than 15° and not more than 60°. Figure 3Where θ represents the angle formed by the plate surface of the upper wall plate 242 of the air outlet part 240 and the horizontal plane. The θ can be, but is not limited to: 16°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc. If the θ is less than 30°, the inclination of the upper wall plate 242 is small, and the air guiding effect of the upper wall plate 242 is not obvious; if the θ is greater than 60°, the inclination of the upper wall plate 242 is large, and the upper wall plate 242 may limit the air outlet surface of the first fresh air outlet, resulting in a decrease in the fresh air output. Therefore, the included angle should be maintained between 15° and 60°.

[0088] Please also refer to Figure 5 and Figure 6 , in an embodiment, the fresh air housing 200 further includes a wind baffle 243 constructed on the air outlet part 240. The wind baffle 243 is located at or near the upper side edge of the first fresh air outlet 202 and extends along the length direction of the upper side edge of the first fresh air outlet 202 (as Figure 8 and Figure 9 shown). Optionally, the wind baffle 243 is close to the upper edge of the first fresh air outlet 202. Thus, when the fresh air blown out from the first fresh air outlet 202 has a tendency to flow back from the upper side of the first fresh air outlet 202, it will immediately be blocked by the wind baffle 243 and cannot flow back, thereby avoiding directly flowing back to the air inlet side of the indoor heat exchanger 120, and further ensuring that the fresh air blown out from the first fresh air outlet 202 can basically only be blown forward into the indoor room to supplement the fresh air in the lower layer space of the room.

[0089] In an embodiment, the window air conditioner 100 further includes an air inlet filter screen 105 disposed between the indoor heat exchanger 120 and the indoor air inlet 103; the wind baffle 243 is located at the rear side of the air inlet filter screen 105, and the front plate surface of the wind baffle 243 abuts against the rear side surface of the air inlet filter screen 105. Thus, no gap is formed between the wind baffle 243 and the air inlet filter screen 105, and the fresh air blown out from the first fresh air outlet 202 is not likely to flow back upward between the two, so that the fresh air can only pass outward through the air inlet filter screen 105 and be blown into the room, realizing a primary fresh air purification and filtration in this process. Then, when the fresh air is mixed with the indoor room air and then flows back from the upper middle part of the indoor air inlet, the fresh air will pass inward through the air inlet filter screen 105 again and enter the indoor side air duct 103, realizing another fresh air purification and filtration in this process, and improving the fresh air purification efficiency.

[0090] Please refer to Figure 5 and Figure 7 , based on any of the above embodiments, the window air conditioner 100 further includes an air duct housing 190. The air duct housing 190 is disposed inside the indoor side enclosure 160 to form the indoor side air duct 105. An air supply port 192 is opened in the air duct housing 190, and the air supply port 192 communicates the second fresh air outlet 203 with the indoor side air duct 105.

[0091] When the window air conditioner 100 is turned on in the fresh air mode, the fresh air from the outdoor environment enters the fresh air duct inside the fresh air housing 200 from the fresh air inlet 201, and then blows out from the second fresh air outlet 202. The blown fresh air passes through the air supply outlet 192 and flows into the indoor side duct 103, and then is driven by the indoor fan 140 to blow out from the indoor air outlet 104 into the indoor room.

[0092] Here, it is considered that the fresh air introduced from the air supply outlet 192 may collide with the air flow blown out from the air outlet side of the indoor heat exchanger 120, resulting in a decrease in both the indoor air circulation volume at the indoor air inlet 103 and the fresh air volume introduced from the air supply outlet 192, and further resulting in a reduction in the air volume. To avoid this situation, optionally, the window air conditioner 100 further includes a second air guiding member 193 provided at the air supply outlet 192, and the second air guiding member 193 is adapted to guide air to the indoor fan 140.

[0093] By providing the second air guiding member 193 at the air supply outlet 192, when the fresh air housing 200 conveys fresh air to the indoor side duct 103, the second air guiding member 193 is used to upwardly divert the fresh air to the air inlet side of the indoor fan 140. This flow direction is the same as the direction of the heat exchange air flow blown from the air outlet side of the indoor heat exchanger 120 to the indoor fan 140, thereby avoiding the collision between the fresh air and the heat exchange air flow entering from the indoor air inlet 103, reducing the resistance of the fresh air flow, enabling a large amount of fresh air to enter the indoor fan 140 and blow out from the indoor air outlet 104, and effectively increasing the air volume of the window air conditioner. As the indoor fan 140 rotates and operates, the indoor fan 140 drives the fresh air and the heat exchange air flow to mix, thereby obtaining a mixed air with a relatively comfortable temperature, and finally being driven by the indoor fan 140 to blow out from the indoor air outlet 104 into the indoor room.

[0094] As for the shape and structure of the second air guiding member 193, there can be various shape and structure design types. For example but not limited to: the second air guiding member 193 is a guiding plate designed in a long strip shape, or a guiding flange extending from the lower edge of the second fresh air outlet 202 or the air supply outlet 192 to the air inlet side of the indoor fan 140, or a guiding cylinder extending from the periphery of the second fresh air outlet 202 or the air supply outlet 192 to the air inlet side of the indoor fan 140. There will be a detailed introduction later.

[0095] As mentioned above, the second air guiding member 193 is provided at the air supply outlet 192, so the second air guiding member 193 can be connected and fixed to the air duct back plate 191. The second air guiding member 193 can also be integrally formed with the air duct back plate 191. Specifically, in this embodiment, the latter implementation manner is adopted.

[0096] Please refer to Figure 5 and Figure 7 、 Figure 14 andFigure 15 , in one embodiment, the air inlet surface of the indoor heat exchanger 120 corresponds to the indoor air inlet 103; the air duct housing 190 includes an air duct back plate 191 corresponding to the air outlet side of the indoor heat exchanger 120, and an air supply opening 192 is formed in the air duct back plate 191 so that the air flow blown out from the air supply opening 192 is located on the air inlet side of the indoor fan 140. And, a second air guiding member 193 is arranged at the air supply opening 192, and the second air guiding member 193 is fixedly connected to the air duct back plate 191.

[0097] Regarding the structural type of the second air guiding member 193, optionally, the second air guiding member 193 is a wind guiding plate 193 arranged in the air supply opening 192, and the plate surface of the wind guiding plate 193 is inclined from its lower side edge to its upper side edge towards the indoor fan 140. The wind guiding plate is arranged in a long strip shape and extends along the left-right direction of the air duct housing 190. The lower side edge of the wind guiding plate 193 is inclined downward and close to the second fresh air outlet 202 of the fresh air housing 200; the upper side edge of the wind guiding plate 193 is inclined upward and towards the indoor fan 140. Therefore, when the second fresh air outlet 202 blows fresh air to the air supply opening 192, the fresh air will be guided by the wind guiding plate 193 and blown towards the indoor fan 140, so that a large amount of fresh air will not be blown towards the indoor heat exchanger 120, avoiding the impact on the air intake volume of the indoor air inlet 103 due to the counterflow with the air flow passing through the indoor heat exchanger 120, ensuring that a large amount of air continuously enters from the indoor air inlet 103 for heat exchange or dehumidification, and helping to increase the air volume and improve the dehumidification effect.

[0098] Of course, in other embodiments, the second air guiding member 193 can also be a wind guiding cylinder protruding from the inner peripheral edge of the air supply opening 192, and the outlet of the wind guiding cylinder faces the indoor fan 140. Specifically, the wind guiding cylinder surrounds the peripheral edge of the air supply opening 192. When the second fresh air outlet 202 blows fresh air to the air supply opening 192, the fresh air enters the wind guiding cylinder 193, and then passes through the wind guiding cylinder and is blown from its outlet towards the indoor fan 140 (similar to the chimney guiding smoke), which can also make a large amount of fresh air not be blown towards the indoor heat exchanger 120, avoiding the impact on the air intake volume of the indoor air inlet 103 due to the counterflow with the air flow passing through the indoor heat exchanger.

[0099] Please refer to Figure 14 and Figure 15 , in this embodiment, the second air guiding member 193 is a wind guiding plate 193 arranged in the air supply opening 192. The number of the wind guiding plates 193 is multiple, and the multiple wind guiding plates 193 are arranged at intervals along the up-down direction of the air supply opening 192, and the inclination directions of the plate surfaces of the multiple wind guiding plates 193 are the same. A ventilation gap is formed between adjacent two wind guiding plates 193. The multiple wind guiding plates 193 cooperate to guide a large amount of fresh air to the air inlet side of the indoor fan 140.

[0100] Regarding the tilt angle of the air deflector 193, it can be reasonably designed according to the relative positions of the air outlet 192 and the indoor fan 140, and there is no specific limitation here. Optionally, the angle formed by the plate surface of the air deflector 193 and the horizontal plane is not less than 30° and not greater than 75°. Figure 4 In Figure 4 , θ represents the angle formed by the plate surface of the air deflector 193 and the horizontal plane. The θ can be, but is not limited to: 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, etc. If the θ is less than 30°, the tilt of the air deflector 193 is small, and the air guiding effect of the air deflector 193 is not obvious; if the θ is greater than 60°, the tilt of the air deflector 193 is large, and part of the air flow may be guided to the inner surface of the air duct back plate 191 and is not easy to enter the indoor fan 140. Therefore, the included angle should be maintained at 30° to 60°.

[0101] The air outlet 192 can be a large hollow opening; the air outlet 192 can also be composed of a plurality of strip-shaped ventilation holes 1921 arranged vertically. Specifically here, the air outlet 192 is composed of a plurality of strip-shaped ventilation holes 1921 arranged vertically; correspondingly, a plurality of air deflectors 193 respectively correspond to the plurality of strip-shaped ventilation holes 1921, and the lower side of each air deflector 193 is connected to the lower edge of its corresponding strip-shaped ventilation hole 1921.

[0102] Specifically, the connection between the lower side of each air deflector 193 and the lower edge of the strip-shaped ventilation hole 1921 is a closed connection, so that there is no air leakage gap between the lower side of the air deflector 193 and the lower edge of the strip-shaped ventilation hole 1921, so that the fresh air flow can only be blown out from the upper side of each air deflector 193. And because the air deflector 193 is tilted, the fresh air cannot flow downward or forward, and can only flow obliquely upward along the air deflector 193 to the air inlet side of the indoor fan 140, thus effectively avoiding the fresh air from colliding with the air flow passing through the indoor heat exchanger and ensuring that a large amount of air volume passes through the indoor heat exchanger.

[0103] For the convenience of manufacturing the air deflector 193, an inverted U-shaped slit can be opened on the air duct back plate 191, and then a part surrounded by the inverted U-shaped slit is folded inward to the indoor side air duct at an inclined angle to form a flange, and the flange forms the air deflector 193. Of course, in other embodiments, the end of each air deflector 193 is connected and fixed to both sides of the air outlet 192.

[0104] Please refer to Figure 5, based on any of the above embodiments, considering that the first fresh air outlet 202 and the second fresh air outlet 203 are not always necessary, optionally, the window air conditioner 100 further includes a first air damper (not shown) configured at the first fresh air outlet 202, and the first air damper is movable relative to the first fresh air outlet 202 to open and close the first fresh air outlet 202; and / or, the window air conditioner 100 further includes a second air damper (not shown) configured at the second fresh air outlet 203, and the second air damper is movable relative to the second fresh air outlet 203 to open and close the second fresh air outlet 203.

[0105] It can be understood that the user can selectively open and close the first fresh air outlet 202 through the first air damper, and selectively open and close the second fresh air outlet 203 through the second air damper. For example, the first fresh air outlet 202 can be opened and the second fresh air outlet 203 can be closed, so as to realize that only the first fresh air outlet 202 conveys fresh air, increasing the fresh air volume conveyed to the lower space; or, the first fresh air outlet 202 can be closed and the second fresh air outlet 203 can be opened, so that only the second fresh air outlet 203 conveys fresh air, increasing the fresh air volume conveyed to the middle and upper spaces.

[0106] Please refer to Figure 5 , based on any of the above embodiments, the window air conditioner 100 further includes a fresh air fan 300. The fresh air fan 300 is installed in the fresh air housing 200, and the fresh air fan 300 is located between the fresh air inlet 201 and the second fresh air outlet 203. The fresh air fan 300 is used to drive the fresh air in the outdoor environment to enter from the fresh air inlet 201, and then blow out from the first fresh air outlet 202 and / or the second fresh air outlet 203. As described above, the indoor fan 140 can not only drive the indoor air to enter the indoor side air duct 105 from the indoor air inlet 103, but also drive the outdoor fresh air to enter the indoor side air duct 105 through the second fresh air outlet 203 of the fresh air housing 200. That is to say, for the fresh air housing 200, the gas flow in the fresh air housing 200 can be driven by both the fresh air fan 300 and the indoor fan 140 at the same time, with strong driving force, so as to effectively drive more fresh air into the room.

[0107] Here, considering that when the air quality of the outdoor environment is poor, the fresh air introduced by the fresh air housing 200 may carry air pollutants such as dust, fine particles, bacteria, volatile organic compounds (such as formaldehyde), which is not conducive to human health. To solve this problem, the window air conditioner 100 further includes a filter element 400, and the filter element 400 is installed in the fresh air housing 200. When the fresh air flow passes through the filter element 400, it is filtered and purified by the filter element 400, removing the air pollutants in the fresh air flow, so that the fresh air flow is purified into clean air, protecting human health.

[0108] Regarding the specific installation position of the filter element 400 in the fresh air housing 200, the filter element 400 can be located between the fresh air inlet 201 and the fresh air fan 300, so that the fresh air flow is first purified by the filter element 400 and then passes through the fresh air fan 300, avoiding contamination of the fresh air fan 300. In addition, the filter element 400 can also be provided between the fresh air fan 300 and the second fresh air outlet 203. As for the structural type of the filter element 400, the filter element 400 can be any one or a combination of a common filter screen, a PM2.5 filter screen, a volatile organic compound gas adsorption module, etc. The number of filter elements 400 can be multiple, and the multiple filter elements are arranged along the direction of the gas flow in the fresh air housing. Since the gas flow in the fresh air housing 200 can be driven by both the fresh air fan 300 and the indoor fan 140 at the same time, and the driving force is strong, even if the number of filter elements 400 is large, it can ensure that the fresh air housing 200 can deliver sufficient fresh air volume to offset the wind blocking effect of the filter element 400.

[0109] Please refer to Figure 2 and Figure 16 Based on any of the above embodiments, the housing of the window air conditioner is provided with an indoor air inlet 103 on the front surface of its housing 112. Here, the front surface of the housing 112 should refer to the side of the window air conditioner facing the user. The indoor side heat exchanger 120 of the window air conditioner includes a first indoor heat exchanger 121 and a second indoor heat exchanger 122. 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 121 and the second indoor heat exchanger 122 is in the heating mode, and the other is in the cooling mode.

[0110] In this embodiment, by making the indoor side heat exchanger 120 have the first indoor heat exchanger 121 and the second indoor heat exchanger 122, and in the constant temperature and dehumidification mode, making one of the first indoor heat exchanger 121 and the second indoor heat exchanger 122 be in the heating mode and the other be in the cooling mode. The air flow passing through the indoor side heat exchanger 120 can be heated and dehumidified at the same time. The mixed air temperature after heating and dehumidification is appropriate, and there will be no feeling of cold wind. After repeated circulation, not only can all the indoor air and fresh air be dehumidified again, but also the overall 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 side heat exchanger 120 can be fully utilized, and there is no need to separately set a fresh air condenser and a fresh air evaporator, which greatly reduces the manufacturing cost.

[0111] Please refer to Figure 2 and Figure 16, in one embodiment, the first indoor heat exchanger 121 and the second indoor heat exchanger 122 are stacked along the air inlet direction of the indoor side air duct 210. When the first indoor heat exchanger 121 and the second indoor heat exchanger 122 are stacked along the air inlet direction of the indoor side air duct 210, the indoor air or fresh air entering from the indoor air inlet 103 first passes through the first indoor heat exchanger 121 for dehumidification / heating, and then passes through the second indoor heat exchanger 122 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 dehumidification for the whole house. By arranging the first indoor heat exchanger 121 and the second indoor heat exchanger 122 in a stacked manner along the air inlet direction, all the air flow blown out from the indoor air inlet 103 can be heated simultaneously and then dehumidified simultaneously, so that there is no need to divide 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.

[0112] Please refer to Figure 2 and Figure 17 , in another embodiment, the first indoor heat exchanger 121 and the second indoor heat exchanger 122 are arranged side by side in a direction perpendicular to the air inlet direction of the indoor side air duct 210, so that a part of the air flow entering from the indoor air inlet 103 blows towards the first indoor heat exchanger 121, and the other part blows towards the second indoor heat exchanger 122.

[0113] In this embodiment, the air inlet direction of the indoor air inlet 103 is usually the front-back direction, and the direction perpendicular to the air inlet direction of the indoor air inlet 103 can be the left-right and up-down directions. In this way, the first indoor heat exchanger 121 and the second indoor heat exchanger 122 can be arranged in an up-down or left-right layout. The fresh air or indoor air entering from the indoor air inlet 103 is partially heated / dehumidified by the first indoor heat exchanger 121, and the other part is dehumidified / heated by the second indoor heat exchanger 122, and then mixed in the indoor side air duct 210 to form a dry air flow with a suitable temperature. Then, the indoor fan sends the constant temperature dry air flow into the room from the indoor air outlet, realizing constant temperature dehumidification for the whole house. When the first indoor heat exchanger 121 and the second indoor heat exchanger 122 are arranged in an up-down layout, only one indoor heat exchanger can be set, and its upper part is divided into the first indoor heat exchanger 121, and its lower part is divided into the second indoor heat exchanger 122. By controlling the valve, one of the upper heat exchanger and the lower heat exchanger is in the heating state, and the other is in the cooling state. In this way, the occupied space of the indoor side heat exchanger 120 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 121 and the second indoor heat exchanger 122 in an up-down or left-right layout, the thickness of the indoor side heat exchanger 120 can be greatly reduced, making full use of the space in the height direction of the housing 112, thereby reducing the occupied space of the indoor side heat exchanger 120 and reducing the volume and weight of the whole machine.

[0114] Please refer toFigure 2 and Figure 17 In one embodiment, the window air conditioner further includes an outdoor heat exchanger 130, a refrigerant circulation pipeline, a first valve 510, and a second valve 520. A discharge pipe 181 is provided at the refrigerant outlet of the compressor 180 of the window air conditioner, and a suction pipe 182 is provided at the refrigerant inlet. The discharge pipe 181, the outdoor heat exchanger 130, the first indoor heat exchanger 121, the second indoor heat exchanger 122, and the suction pipe 182 are sequentially connected through the refrigerant circulation pipeline. The first valve 510 is connected in series to the refrigerant circulation pipeline between the outdoor heat exchanger 130 and the first indoor heat exchanger 121, and the second valve 520 is connected in series to the refrigerant circulation pipeline between the first indoor heat exchanger 121 and the second indoor heat exchanger 122.

[0115] In this embodiment, the compressor 180 can be a variable-frequency compressor 180 or a fixed-frequency compressor 180. By making the compressor 180 a variable-frequency compressor 180, it is possible to better implement the dual systems of refrigeration and constant-temperature dehumidification, saving one compressor 180, thereby making the overall structure simpler, reducing costs and power, and greatly improving energy efficiency. The first valve 510 and the second valve 520 can be solenoid valves, electronic expansion valves, or throttle valves, and can control the on / off or flow rate of the pipeline where they are located. By setting the first valve 510 and the second valve 520, it is possible to control whether the refrigerant flows into the first indoor heat exchanger 121 and the second indoor heat exchanger 122, thereby controlling whether the first indoor heat exchanger 121 and the second indoor heat exchanger 122 participate in refrigeration or heating.

[0116] When the dehumidification mode needs to be turned on, the high-temperature refrigerant flowing out of the compressor 180 enters the outdoor heat exchanger 130 (condenser). Thus, the high-temperature refrigerant coming out of the outdoor heat exchanger 130 reaches the first valve 510. At this time, the first valve 510 can be fully or mostly opened to make the temperature of the outdoor heat exchanger 130 equal to or slightly lower than the temperature of the first indoor heat exchanger 121. At this time, the first indoor heat exchanger 121 serves as a condenser and plays the role of heating the air flow. Then, the sub-high-temperature refrigerant flowing out of the first indoor heat exchanger 121 reaches the second valve 520. The second valve 520 is partially opened to play the role of capillary throttling. After throttling, the refrigerant becomes a low-temperature refrigerant and flows through the second indoor heat exchanger 122. At this time, the second indoor heat exchanger 122 serves as an evaporator and plays the role of cooling, that is, dehumidification. The refrigerant flowing out of the second indoor heat exchanger 122 then returns to the compressor 180. In this way, after the fresh air and the indoor air are mixed, part of them is heated by the first indoor heat exchanger 121, and part of them is cooled and dehumidified by the second indoor heat exchanger 122. After entering the indoor-side air duct 210 and being mixed, a dry air flow with a suitable temperature is formed and then blown out from the indoor air outlet, thereby achieving the purpose of dehumidifying the room without blowing cold air, and the dehumidification effect is better. Of course, the first indoor heat exchanger 121 can also serve as an evaporator, and the second indoor heat exchanger 122 can serve as a condenser, and the purpose of constant-temperature dehumidification can also be achieved.

[0117] 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 180 enters the outdoor heat exchanger 130 (condenser), so that the high-temperature refrigerant coming out of the outdoor heat exchanger 130 reaches the first valve 510. At this time, the first valve 510 is slightly opened to play the role of capillary throttling, making the temperature of the first indoor heat exchanger 121 much lower than that of the outdoor heat exchanger 130. At this time, the first indoor heat exchanger 121 serves as an evaporator to play a role in cooling. Then, the low-temperature refrigerant flowing out of the first indoor heat exchanger 121 reaches the second valve 520. The second valve 520 is fully or mostly opened to play the role of complete passage or further throttling. The refrigerant passing through the second valve 520 flows through the second indoor heat exchanger 122. At this time, the second indoor heat exchanger 122 serves as an evaporator to play a role in secondary cooling. The refrigerant flowing out of the second indoor heat exchanger 122 returns to the compressor 180 again. In this way, the fresh air and the indoor air are mixed and then cooled by the first indoor heat exchanger 121, and then cooled secondly by the second indoor heat exchanger 122, and then blown out from the indoor air outlet after entering the indoor side air duct 210, so as to achieve the purpose of quickly cooling the room.

[0118] Please refer to Figure 2 and Figure 17 In one embodiment, the refrigerant circulation pipeline includes a first pipeline 610 connecting the discharge pipe 181 and the outdoor heat exchanger 130, and a second pipeline 620 connecting the suction pipe 182 and the second indoor heat exchanger 122. The window air conditioner further includes a switching device 700. The switching device 700 is connected in series to the first pipeline 610 and the second pipeline 620. The switching device 700 has a first switching state and a second switching state. In the first switching state, the first pipeline 610 connected to both ends of the switching device 700 is conducted, and the second pipeline 620 connected to both ends of the switching device 700 is conducted. In the second switching state, the first pipeline 610 between the discharge pipe 181 and the switching device 700 is conducted with the second pipeline 620 between the switching device 700 and the second indoor heat exchanger 122, and the first pipeline 610 between the outdoor heat exchanger 130 and the switching device 700 is conducted with the second pipeline 620 between the suction pipe 182 and the switching device 700.

[0119] In this embodiment, it can be understood that the window air conditioner further includes a controller, which is electrically connected to the first valve 510, the second valve 520, and the switching device 700, so as to control the switching state of the switching device 700 and the opening and closing of each valve. The switching device 700 can be a four-way valve or other switching device 700 that prevents the refrigerant from entering the outdoor heat exchanger 130 and the second indoor heat exchanger 122 simultaneously. By means of the switching device 700, the functions of the air conditioner can be increased. It can be understood that the switching device 700 is connected in series on the first pipe 610 and the second pipe 620, that is, both ends of the switching device 700 are connected to the first pipe 610, and both ends are connected to the second pipe 620.

[0120] When the switching device 700 is in the first switching state, the high-temperature refrigerant flowing out of the discharge pipe 181 of the compressor 180 flows through the first pipe 610 to the outdoor heat exchanger 130, then sequentially flows into the first indoor heat exchanger 121 and the second indoor heat exchanger 122, and finally flows back to the compressor 180 through the second pipe 620 and the suction pipe 182. By controlling the opening degrees of the first valve 510 and the second valve 520, the first indoor heat exchanger 121 can be controlled to be in a refrigeration state or a heating state, so that the entire system can be controlled to be in a constant temperature dehumidification mode or a full refrigeration system. The control of whether the first indoor heat exchanger 121 is in a refrigeration state or a heating state by the first valve 510 and the second valve 520 is similar to the embodiment without a switching state described above, and will not be elaborated here.

[0121] When the switching device 700 is in the second switching state, the high-temperature refrigerant flowing out of the discharge pipe 181 of the compressor 180 flows into the second indoor heat exchanger 122 through the first pipe 610 and the second pipe 620, then flows to the first indoor heat exchanger 121 and the outdoor heat exchanger 130, and finally flows back to the compressor 180 through the first pipe 610, the second pipe 620, and the suction pipe 182. By controlling the opening degrees of the first valve 510 and the second valve 520, it is possible to control whether the first indoor heat exchanger 121 is 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.

[0122] When the full heating mode is turned on, the switching device 700 is in the second switching state. The high-temperature refrigerant flowing out of the discharge pipe 181 of the compressor 180 flows into the second indoor heat exchanger 122 through the first pipe 610 and the second pipe 620. At this time, the second indoor heat exchanger 122 functions as a condenser for heating. Thus, the high-temperature refrigerant coming out of the second indoor heat exchanger 122 reaches the second valve 520. At this time, the second valve 520 is fully opened, and the high-temperature refrigerant continues to flow out to the first indoor heat exchanger 121. The first indoor heat exchanger 121 functions to heat again. After the sub-high-temperature refrigerant reaches the first valve 510, the first valve 510 can function as a capillary throttle. After throttling, the refrigerant becomes a low-temperature refrigerant, flows through the outdoor heat exchanger 130, and then returns to the compressor 180. In this way, the purpose of rapid indoor heating can be achieved.

[0123] 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 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. A window air conditioner, characterized in that, the window air conditioner includes: a housing, the housing being configured with an indoor air inlet and an indoor air outlet; an indoor heat exchanger, installed within the housing and corresponding to the indoor air inlet; an indoor side panel, installed within the housing, the indoor side panel being configured with an indoor side air duct that connects the air outlet side of the indoor heat exchanger and the indoor air outlet; and a fresh air housing, installed within the housing, the fresh air housing being configured with a fresh air inlet, as well as a first fresh air outlet and a second fresh air outlet that communicate with the fresh air inlet; wherein, the first fresh air outlet is located on the air inlet side of the indoor heat exchanger, and the second fresh air outlet communicates with the indoor side air duct; the window air conditioner further includes a first air guiding member, the first air guiding member being disposed at the first fresh air outlet for guiding the fresh air passing through the first fresh air outlet to blow obliquely downward into the indoor room; the window air conditioner further includes an air duct housing, the air duct housing being disposed within the indoor side panel for forming the indoor side air duct, and an air supply port is opened on the air duct housing, the air supply port connecting the second fresh air outlet and the indoor side air duct.

2. The window air conditioner according to claim 1, characterized in that, the fresh air housing includes an air inlet portion provided with the fresh air inlet, an air outlet portion located between the indoor heat exchanger and the indoor air inlet, and a wind guiding portion that connects the air inlet portion and the air outlet portion; wherein, the first fresh air outlet is provided at the air outlet portion; the second fresh air outlet is provided at the wind guiding portion.

3. The window air conditioner according to claim 2, characterized in that, the wind guiding portion has a wind guiding wall that transitions in an arc shape downward from the top wall of the air inlet portion to the top wall of the air outlet portion; the second fresh air outlet is opened on the wind guiding wall.

4. The window air conditioner according to claim 2, characterized in that, the wind guiding portion is located at the rear side of the indoor side panel; an installation opening is opened on the rear wall panel of the indoor side panel, and the second fresh air outlet on the wind guiding portion extends into the interior of the indoor side panel from the installation opening to communicate with the indoor side air duct.

5. The window air conditioner according to claim 4, characterized in that, the wind guiding wall of the wind guiding portion is provided with an installation slot located above the second fresh air outlet, the installation slot is in the same extending direction as the upper side edge of the second fresh air outlet, and the installation slot is adapted to receive the upper side edge of the installation opening or a plug board located above the installation opening.

6. The window air conditioner according to any one of claims 2 to 5, characterized in that, the fresh air housing further includes a wind guiding portion and a wind attracting portion that connects the wind guiding portion and the air outlet portion, the wind attracting portion is arranged in a flat shape, and the wind attracting portion passes through below the indoor heat exchanger from the wind guiding portion and is connected to the lower end of the air outlet portion.

7. The window air conditioner according to any one of claims 2 to 5, characterized in that, the first fresh air outlet is opened towards the indoor air inlet; or, the first fresh air outlet is opened towards the air inlet surface of the indoor heat exchanger; or, the first fresh air outlet is opened upward.

8. The window air conditioner according to claim 2, It is characterized in that the air outlet part has an upper wall plate at its top, and the front side edge of the upper wall plate forms the upper edge of the first fresh air outlet; the plate surface of the upper wall plate slopes downward from its rear side edge to its front side edge, so that the upper wall plate forms the first air guiding member.

9. The window air conditioner according to claim 8, It is characterized in that the indoor air inlet is provided with a plurality of air inlet louvers arranged at intervals in the up and down direction, and the air inlet louver at the lower end of the indoor air inlet corresponds to the first fresh air outlet, and the blade surface of this air inlet louver slopes downward from the rear to the front.

10. The window air conditioner according to claim 9, It is characterized in that the rear edge of at least one of the air inlet louvers corresponds to the front side edge of the upper wall plate of the air outlet part, and the inclination angle of this air inlet louver is the same as the inclination angle of the upper wall plate.

11. The window air conditioner according to claim 8, It is characterized in that the included angle formed by the plate surface of the upper wall plate of the air outlet part and the horizontal plane is not less than 15° and not more than 60°.

12. The window air conditioner according to claim 8, It is characterized in that the fresh air housing further includes a wind baffle constructed on the air outlet part, the wind baffle is located at or near the upper side of the first fresh air outlet and extends along the length direction of the upper side of the first fresh air outlet.

13. The window air conditioner according to claim 12, It is characterized in that the window air conditioner further includes an air inlet filter provided between the indoor heat exchanger and the indoor air inlet; the wind baffle is located at the rear side of the air inlet filter, and the front plate surface of the wind baffle abuts against the rear side surface of the air inlet filter.

14. The window air conditioner according to claim 1, It is characterized in that the window air conditioner further includes a second air guiding member provided at the air outlet, and the second air guiding member is used for guiding air to the indoor fan.

15. The window air conditioner according to claim 14, It is characterized in that the second air guiding member is a wind guiding plate provided at the air outlet, and the plate surface of the wind guiding plate slopes from its lower side edge to its upper side edge towards the indoor fan; or the second air guiding member is a wind guiding cylinder protruding from the inner periphery of the air outlet, and the outlet of the wind guiding cylinder faces the indoor fan.

16. The window air conditioner according to claim 15, It is characterized in that the number of the wind guiding plates is multiple, and the multiple wind guiding plates are arranged at intervals in the up and down direction of the air outlet, and the inclination directions of the plate surfaces of the multiple wind guiding plates are the same.

17. The window air conditioner according to claim 16, It is characterized in that the air outlet is composed of a plurality of strip-shaped ventilation holes arranged up and down; the multiple wind guiding plates respectively correspond to the multiple strip-shaped ventilation holes, and the lower side edge of each wind guiding plate is connected to the lower edge of its corresponding strip-shaped ventilation hole.

18. The window air conditioner according to claim 15, It is characterized in that the included angle formed by the plate surface of the wind guiding plate and the horizontal plane is not less than 30° and not more than 75°.

19. The window air conditioner according to claim 14, It is characterized in that the second air guiding member is integrally formed with the air duct housing.

20. The window air conditioner according to any one of claims 1 to 5, It is characterized in that The window air conditioner further comprises a first damper constructed at the first fresh air outlet, wherein the first damper is movable relative to the first fresh air outlet to open and close the first fresh air outlet; and / or, The window air conditioner further includes a second damper constructed at the second fresh air outlet, and the second damper is movable relative to the second fresh air outlet to open and close the second fresh air outlet.

21. The window air conditioner according to any one of claims 1 to 5, It is characterized in that The window air conditioner further comprises a fresh air blower, wherein the fresh air blower is installed in the fresh air housing and is located between the fresh air inlet and the second fresh air outlet.

22. The window air conditioner according to claim 21, It is characterized in that The window air conditioner further comprises a filter element, wherein the filter element is installed in the fresh air housing, and the filter element is located between the fresh air inlet and the fresh air fan; or, the filter element is located between the fresh air fan and the second fresh air outlet.

23. The window air conditioner according to any one of claims 1 to 5, It is characterized in that The indoor heat exchanger of the window air conditioner 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 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 state, and the other is in a cooling state.

24. The window air conditioner according to claim 23, It is characterized in that The first indoor heat exchanger and the second indoor heat exchanger are stacked along the air inlet direction of the indoor air inlet; or, 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 inlet.

25. The window air conditioner according to claim 24, It is characterized in that The window air conditioner also includes an outdoor heat exchanger, a refrigerant circulation pipeline, a first valve and a second valve; 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; 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; 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.

26. The window air conditioner according to claim 25, It is characterized in that 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 also 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 conductive, and the second pipe connected to both ends of the switching device is conductive; In the second switching state, the first pipe between the discharge pipe and the switching device is communicated 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 communicated with the second pipe between the suction pipe and the switching device.

27. The window air conditioner according to claim 26, characterized in that, 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, and 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, and 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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