Window Air Conditioner

Abstract

The present invention discloses a window air conditioner, which comprises a shell, an indoor air duct assembly and a fresh air valve. The shell is provided with an indoor air outlet. The indoor air duct assembly is installed in the shell, and the indoor air duct assembly is provided with an indoor air duct connected to the indoor air outlet, and a fresh air outlet connecting the indoor air duct and the outdoor environment. The fresh air valve comprises a valve and a valve stem, the valve is flipped and installed at the fresh air outlet, the valve stem is inserted into the shell and connected to the valve, and the movement of the valve stem can drive the valve to flip and open or close the fresh air outlet. The window air conditioner of the present invention can realize the fresh air exchange function, improve the indoor environmental quality, and enhance the user's comfort experience.

Description

Technical Field

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

[0002] At present, most window air conditioners on the market do not have indoor air ducts connected to the outdoor environment, so this conventional air conditioner cannot achieve the function of fresh air exchange. When this conventional air conditioner is working, the air circulates between the indoor air duct and the indoor environment for heat exchange. Over time, the content of dust, bacteria or harmful gases in the air of the indoor environment gradually increases, causing the indoor environment quality to gradually decline, which is very likely to affect the user's comfort experience. Summary of the invention

[0003] The main purpose of the present invention is to provide a window air conditioner, which aims to achieve a fresh air exchange function, improve the indoor environmental quality, and enhance the user's comfort experience.

[0004] To achieve the above-mentioned object, the present invention proposes a window air conditioner, which comprises a housing, an indoor air duct assembly and a fresh air valve. The housing is provided with an indoor air outlet. The indoor air duct assembly is installed in the housing, and the indoor air duct assembly is provided with an indoor air duct connected to the indoor air outlet, and a fresh air outlet connecting the indoor air duct and the outdoor environment. The fresh air valve comprises a valve and a valve stem, the valve is flipped and installed at the fresh air outlet, the valve stem is inserted into the housing and connected to the valve, and the movement of the valve stem can drive the valve to flip and open or close the fresh air outlet.

[0005] In one embodiment, the valve stem is inserted into the shell in a front-to-back direction, and when the valve stem moves in the front-to-back direction, the valve flips to open or close the fresh air inlet.

[0006] In one embodiment, the valve includes a main valve plate and a side valve plate, the main valve plate and the side valve plate are arranged at an angle, a rotating shaft for flipping the valve is provided at the connection between the main valve plate and the side valve plate, and one end of the side valve plate away from the rotating shaft is pivotally connected to the rear end of the valve stem.

[0007] In one embodiment, a notch is formed at one end of the side valve plate away from the rotating shaft, a pivot shaft is formed at the opening position of the notch, a pivot hole is formed at the rear end of the valve stem, and the pivot hole is pivotally connected to the pivot shaft.

[0008] In one embodiment, the pivot hole is elongated and extends toward the valve, and an opening for inserting the pivot shaft is formed at one end of the pivot hole close to the valve. The opening is bent laterally and is gradually tapered from the outer side of the pivot hole to the inner side.

[0009] In one embodiment, the main valve plate and the side valve plate are integrally formed.

[0010] In one embodiment, the fresh air valve further comprises a guide sleeve fixedly mounted on the indoor air duct assembly, the guide sleeve being sleeved on the valve stem, and the valve stem being slidable in a front-rear direction relative to the guide sleeve.

[0011] In one embodiment, the valve stem is provided with a plurality of positioning slots spaced apart in the front-rear direction, and the guide sleeve is provided with positioning teeth, and the positioning teeth can be selectively clamped and fixed with any one of the positioning slots.

[0012] In one embodiment, when the positioning tooth moves from one of the positioning slots to another adjacent positioning slot, the valve flips over an angle of no more than 45°.

[0013] In one embodiment, when the positioning tooth moves from one of the positioning slots to another adjacent positioning slot, the valve flips over an angle of at least 10° and not more than 30°.

[0014] In one embodiment, a stopper protrudes from the rear of the push-pull arm, and the guide sleeve is provided with a stopper step, and the stopper step is located at the front side of the stopper protrusion so as to abut against the stopper protrusion.

[0015] In one embodiment, the fresh air valve further includes a valve sleeve, the valve sleeve is installed at the fresh air inlet, and the valve is flippably installed in the valve sleeve.

[0016] In one embodiment, a rear cover of the fresh air outlet is provided with a waterproof cover, and a lower end of the waterproof cover has a fresh air outlet connected to the fresh air outlet.

[0017] In one embodiment, the shell further includes a front panel, the front panel is provided with an air outlet grille opposite to the indoor air outlet, and the front end of the valve stem passes outward from a grille gap of the air outlet grille.

[0018] In one embodiment, a hand-held portion is provided at the outer end of the valve stem; or, the valve stem is connected to a motor to be driven to move by the motor.

[0019] In one embodiment, the window air conditioner includes a centrifugal wind wheel, an axial flow wind wheel, an indoor heat exchanger, an outdoor heat exchanger, and an outdoor air duct assembly installed in a shell; wherein the indoor heat exchanger and the centrifugal wind wheel are located in the indoor air duct; the outdoor air duct assembly is provided with an outdoor air duct, and the outdoor heat exchanger and the axial flow wind wheel are located in the outdoor air duct.

[0020] In one embodiment, the shell includes a chassis, and a shell cover and a front panel installed on the chassis, the shell cover is located at the rear side of the front panel and is spliced ​​with the front panel, and the centrifugal wind wheel, axial flow wind wheel, indoor heat exchanger, outdoor heat exchanger, and outdoor air duct assembly are installed on the chassis.

[0021] The technical solution of the present invention is to form a fresh air outlet connecting the indoor air duct and the outdoor environment on the indoor air duct assembly, and insert the fresh air valve into the shell, so as to use the movement of the valve stem of the fresh air valve to drive the valve to flip, and open or close the fresh air outlet. When the fresh air valve opens the fresh air outlet, the air from the outdoor environment enters the indoor environment through the fresh air outlet, thereby realizing the fresh air exchange function, improving the indoor environmental quality, and enhancing the user's comfort experience. In addition, the switching principle of the fresh air valve is actually to convert the linear motion of the valve stem into the flipping motion (i.e., rotational motion) of the valve, so by controlling the displacement of the valve stem, the flipping angle of the valve can be adjusted accordingly, that is, the size of the opening of the fresh air outlet and the angle of the fresh air intake can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a partial structural schematic diagram of an embodiment of a window type air conditioner of the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the internal structure of a window air conditioner;

[0025] Figure 3 for Figure 1 A schematic diagram of the structure of the indoor air duct assembly of the window air conditioner;

[0026] Figure 4 for Figure 3 Rear view of the air duct assembly in the middle chamber;

[0027] Figure 5 Figure 4 Sectional view along line II;

[0028] Figure 6 for Figure 1 Schematic diagram of the structure of the fresh air valve of the middle window air conditioner;

[0029] Figure 7 for Figure 6 Top view of the Zhongxin air valve;

[0030] Figure 8 for Figure 7 A schematic diagram of one of the structural types of the valve;

[0031] Fig. 9 for Figure 7 Schematic diagram of the second structural type of the valve;

[0032] Figure 10-A for Figure 1 Schematic diagram of the valve in the closed state;

[0033] Figure 10-B for Figure 1 Schematic diagram of the middle valve opening to the first gear position;

[0034] Figure 10-C for Figure 1 Schematic diagram of the middle valve opening to the second gear position;

[0035] Figure 10-D for Figure 1 Schematic diagram of the middle valve opening to the third gear position.

[0036] Description of Figure Numbers:

[0037] Label name Label name 100 case 602 gap 110 Chassis 603 Pivot Axis 120 Shell 620 Valve stem 200 compressor 621 Positioning slot 300a Centrifugal wind wheel 621a First positioning slot 300b Axial flow fan 621b Second positioning slot 400a Indoor heat exchanger 621c The third positioning slot 400b Outdoor heat exchanger 621d Fourth positioning slot 500a Indoor air duct components 622 Stop bump 500b Outdoor air duct components 623 Pivot hole 501 Outdoor air duct 624 Open 502 Indoor air duct 630 Valve sleeve 503 New outlet 640 Guide sleeve 600 Fresh air valve 641 Positioning tooth 610 valve 642 Stop step 611 Main valve plate 700 Waterproof cover 612 Side valve plate 710 Opening 601 Shaft

[0038] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] The present invention discloses a window air conditioner, which can realize the function of fresh air exchange, improve the indoor environment quality, and enhance the user's comfort experience. Figure 1 to 1 0, the solid arrows indicate the spatial structures such as holes, slots, or cavities, and the dotted arrows indicate the indoor wind paths.

[0043] See also Figure 1 , Figure 2 and Figure 6 In one embodiment of the window air conditioner of the present invention, the window air conditioner comprises a housing 100, an indoor air duct assembly 500a and a fresh air valve 600. The housing 100 is provided with an indoor air outlet; the indoor air duct assembly 500a is installed in the housing 100, the indoor air duct assembly 500a is formed with an indoor air duct 502 connected with the indoor air outlet, and a fresh air outlet 503 connecting the indoor air duct 502 with the outdoor environment, and the fresh air outlet 503 has a fresh air outlet 503; the fresh air valve 600 comprises a valve 610 and a valve stem 620, the valve 610 can be flipped and installed on the fresh air outlet 503, the valve stem 620 is inserted in the housing 100 and connected to the valve 610, and the movement of the valve stem 620 can drive the valve 610 to flip and open or close the fresh air outlet 503.

[0044] Specifically, the housing 100 includes a chassis 110, a shell 120 mounted on the chassis 110, and a front panel (not shown). The housing 100 is also formed with an indoor air inlet, an indoor air outlet, an outdoor air inlet, and an outdoor air outlet. Among them, an indoor air duct assembly 500a is installed at the front of the chassis 110, and the indoor air duct assembly 500a forms an indoor air duct 502, and the indoor air duct 502 connects the indoor air inlet and the indoor air outlet. An outdoor air duct assembly 500b is installed at the rear of the chassis 110, and the outdoor air duct assembly 500b forms an outdoor air duct 501, and the outdoor air duct 501 connects the outdoor air inlet and the outdoor air outlet. The front panel is installed at the front end of the chassis 110, and the front panel is provided with an air inlet grille opposite to the indoor air inlet, and an air outlet grille opposite to the indoor air outlet. The housing 120 is located at the rear side of the front panel and is spliced ​​with the front panel to cover the indoor air duct assembly 500a and the outdoor air duct assembly 500b.

[0045] The window air conditioner further comprises a compressor 200, a centrifugal wind wheel 300a, an axial flow wind wheel 300b, an indoor heat exchanger 400a and an outdoor heat exchanger 400b installed on the chassis 110. The indoor heat exchanger 400a and the centrifugal wind wheel 300a are located in the indoor air duct 502. The compressor 200, the outdoor heat exchanger 400b and the axial flow wind wheel 300b are located in the outdoor air duct 501. When the window air conditioner is working, the air of the outdoor environment enters the outdoor air duct 501 from the outdoor air inlet driven by the axial flow wind wheel 300b. After the outdoor air exchanges heat with the outdoor heat exchanger 400b in the outdoor air duct 501, the heat-exchanged air is blown back to the outdoor environment from the outdoor air outlet. Driven by the centrifugal wind wheel 300a, the air of the indoor environment enters the indoor air duct 502 from the indoor air inlet. This part of the indoor air exchanges heat with the indoor heat exchanger 400a in the indoor air duct 502. The air after heat exchange is blown into the room from the indoor air outlet to achieve cooling or heating.

[0046] A fresh air vent 503 is provided on the indoor air duct assembly 500a, and the fresh air vent 503 connects the indoor air duct 502 with the outdoor environment. The fresh air vent 503 can be opened or closed by using the fresh air valve 600. For example, when it is necessary to introduce fresh air into the indoor environment, the valve stem 620 of the fresh air valve 600 is pushed (or pulled), and the valve stem 620 moves to drive the valve 610 to flip, and the valve 610 flips to open the fresh air vent 503, so that the air of the outdoor environment enters the indoor air duct 502 through the fresh air vent 503, and this part of the outdoor air is mixed with the indoor air in the indoor air duct 502, and finally the indoor environment is discharged from the indoor side, thereby realizing the fresh air exchange function. When it is not necessary to introduce fresh air into the indoor environment, the valve stem 620 can be moved in the opposite direction to close the fresh air vent 503, and the fresh air vent 503 is closed, so that no fresh air passes through the fresh air vent 503.

[0047] The technical solution of the present invention is to form a fresh air outlet 503 connecting the indoor air duct 502 and the outdoor environment on the indoor air duct assembly 500a, and insert the fresh air valve 600 into the housing 100, so as to use the movement of the valve stem 620 of the fresh air valve 600 to drive the valve 610 to flip and open or close the fresh air outlet 503. When the fresh air valve 600 opens the fresh air outlet 503, the air from the outdoor environment enters the indoor environment through the fresh air outlet 503, thereby realizing the fresh air exchange function, improving the indoor environmental quality, and enhancing the user's comfort experience. In addition, the switching principle of the fresh air valve 600 is actually to convert the linear motion of the valve stem 620 into the flipping motion (i.e., rotational motion) of the valve 610. By controlling the displacement of the valve stem 620, the flipping angle of the valve 610 can be adjusted accordingly, that is, the size of the opening of the fresh air outlet 503 and the angle of the fresh air intake can be adjusted.

[0048] See also Figure 2 As for the fresh air inlet 503, the formation method of the fresh air inlet 503 on the indoor air duct assembly 500a is not specifically limited. The fresh air inlet 503 can be a gap reserved between the air duct enclosures of the indoor air duct assembly 500a, or a through hole penetrating the indoor air duct assembly 500a. In this embodiment, the fresh air inlet 503 is a through hole penetrating the indoor air duct assembly 500a.

[0049] See also Figures 3 to 5 , since the fresh air outlet 503 is relatively close to the outdoor environment, in order to prevent water droplets in the outdoor environment from falling into the indoor air duct 502 from the fresh air outlet 503, a waterproof cover 700 can be provided at the rear side of the fresh air outlet 503, and an opening 710 communicating with the fresh air outlet 503 is formed at the lower end of the waterproof cover 700. Outdoor air enters the fresh air outlet 503 from the opening 710 at the lower end of the waterproof cover 700, and then enters the indoor air duct 502 through the fresh air outlet 503. Water droplets in the outdoor environment fall on the waterproof cover 700, and are discharged downward along the waterproof cover 700, and are difficult to enter the fresh air outlet 503.

[0050] See 2 and Figure 6 For the fresh air valve 600, the structural design of the fresh air valve 600 can have multiple structural types. In this embodiment, the fresh air valve 600 also includes a valve sleeve 630, which is installed at the fresh air outlet 503, and the rotating shaft 601 of the valve 610 is rotatably connected to the valve sleeve 630. The valve 610 can be a bent structure (such as Figure 8 ) or flat plate structures (such as Fig. 9 ), which is specifically a curved structure. Considering that if the valve 610 is a flat plate structure, the force arm of the valve 610 is small, the angle of the valve 610 flipping is difficult to reach 90°.

[0051] See also Figure 2 , Figure 7 and Figure 8 In the present embodiment, in order to increase the flipping angle of the valve 610, the valve 610 includes a main valve plate 611 and a side valve plate 612. The main valve plate 611 and the side valve plate 612 are arranged at an angle. A rotating shaft 601 for flipping the valve 610 is provided at the connection between the main valve plate 611 and the side valve plate 612. The end of the side valve plate 612 away from the rotating shaft 601 is pivotally connected to the rear end of the valve stem 620.

[0052] Specifically, the main valve plate 611 and the side valve plate 612 are arranged at an angle, that is, the main valve plate 611 and the side valve plate 612 are roughly arranged in an L-shape or a V-shape. For the convenience of manufacturing, the main valve plate 611 and the side valve plate 612 are integrally formed. An angle is formed between the main valve plate 611 and the side valve plate 612, and the angle is specifically an obtuse angle. The specific size is not limited and can be formulated accordingly according to the actual application. The valve 610 has an open state for opening the fresh air outlet 503 and a closed state for closing the fresh air outlet 503. When the valve 610 is in the closed state, the side valve plate 612 extends forwardly relative to the main valve plate 611, that is, the angle is open forward. This design can make the valve have a larger force arm. When the valve stem 620 is pushed backward, the angle of the main valve plate 611 of the valve 610 flipped forward can reach 90°, and the fresh air outlet 503 can be opened to the maximum at this time.

[0053] Based on the above embodiment, a notch 602 is provided at one end of the side valve plate 612 away from the rotating shaft 601, a pivot shaft 603 is provided at the opening 710 of the notch 602, and a pivot hole 623 is provided at the rear end of the valve stem 620, and the pivot hole 623 is pivotally connected to the pivot shaft 603. It should be noted that the pivot hole 623 can be a round hole or a strip-shaped long hole. If the pivot hole 623 is a round hole, then during the turning movement of the valve 610, the valve stem 620 will be driven to approach the valve 610, and at this time, a space for the valve stem 620 to deviate needs to be reserved in the housing 100. If the pivot hole 623 is a strip-shaped long hole, then during the turning movement of the valve 610, the pivot shaft 603 of the valve 610 can move in the strip-shaped long hole, and will not drive the valve stem 620 to approach the valve 610, so that the valve stem 620 keeps moving forward and backward upward.

[0054] In this embodiment, the pivot hole 623 is a strip-shaped long hole. The pivot hole 623 is long and extends toward the valve 610, and an opening 624 for inserting the pivot shaft 603 is formed at one end of the pivot hole 623 close to the valve 610. The opening 624 is bent sideways to prevent the pivot shaft 603 from accidentally falling out. In addition, the opening 624 is arranged in a tapered shape from the outside of the pivot hole 623 to the inside thereof. In other words, the outer periphery of the opening 624 is relatively wide, so that it is convenient to guide the pivot shaft 603 from the outside to the inside of the pivot hole 623; while the inner periphery of the opening 624 is relatively narrow, and when the pivot shaft 603 is fully inserted into the pivot hole 623, the inner periphery of the opening 624 can prevent the pivot shaft 603 from accidentally falling out, thereby improving the stability of the assembly of the pivot shaft 603 and the pivot hole 623.

[0055] See also Figure 2 and Figure 7 , with respect to the moving direction of the valve stem 620 of the fresh air valve 600, the valve stem 620 can move in the front-to-back direction or the left-to-right direction. In this embodiment, the valve stem 620 is inserted into the housing 100 in the front-to-back direction. When the valve stem 620 moves in the front-to-back direction, the valve 610 flips to open or close the fresh air port 503. The valve stem 620 can be manually pulled by the user; or, the valve stem 620 can be connected to a motor to be driven to move by the motor.

[0056] Specifically, the front end of the valve stem 620 is penetrated by the front panel, and the valve stem 620 is manually pulled by the user. When using the fresh air valve 600, the user can push the valve stem 620 backward, and the valve 610 flips forward to open the fresh air inlet 503; in this process, the displacement of the valve stem 620 moving backward can be adjusted to adjust the size of the fresh air inlet 503 opened by the valve 610 accordingly. Conversely, the user pulls the valve stem 620 forward, and the valve 610 flips backward to close the fresh air inlet 503. In order to facilitate the user to pull the valve stem 620 by hand, preferably, the outer end of the valve stem 620 is provided with a hand-held portion, and the hand-held portion can be a handle or a wristband.

[0057] Since the front panel of the shell 100 is provided with an air outlet grille opposite to the indoor air outlet, the front end of the valve stem 620 can pass outward from the grille gap of the air outlet grille, so there is no need to provide an additional gap structure for the valve stem 620 to pass through.

[0058] Of course, in other embodiments, the valve stem 620 may be inserted into the housing 100 in the left-right direction, so that the user can push and pull the valve stem 620 in the left-right direction to flip the valve 610 to open or close the fresh air port 503. It should be noted that the aforementioned "front-to-back direction" and "left-to-right direction" are not strictly limited to the front-to-back linear movement or the left-to-right linear movement, and may actually be slightly deviated.

[0059] Please continue reading Figure 2 and Figure 7 Based on any of the above embodiments, in order to ensure that the valve stem 620 can smoothly move in the front-to-back direction, optionally, the fresh air valve 600 further includes a guide sleeve 640 fixedly mounted on the indoor air duct assembly 500a, the guide sleeve 640 is sleeved on the valve stem 620, and the valve stem 620 can slide in the front-to-back direction relative to the guide sleeve 640. Specifically, the guide sleeve 640 is fixed on the indoor air duct assembly 500a, and the valve stem 620 is slidably mounted on the guide sleeve 640 in the front-to-back direction, so that the valve stem 620 can slide in the front-to-back direction relative to the guide sleeve 640. During the movement of the valve stem 620, the guide sleeve 640 plays a role in orienting the valve stem 620, preventing the valve stem 620 from deviating from the accurate moving direction.

[0060] See also Figure 2 and Figure 7 Here, it is considered that the amount of fresh air required for the indoor environment is different in different situations. For example, the amount of fresh air required may be different due to factors such as the size of the room space and the cleanliness of the air quality in the room. In view of this, in order to achieve adjustable fresh air volume to meet the demand for fresh air volume in different situations, in this embodiment, the valve stem 620 is provided with a plurality of positioning slots 621 arranged at intervals in the front-to-back direction, and the guide sleeve 640 is provided with positioning teeth 641, and the positioning teeth 641 can be selectively clamped and fixed with any one of the positioning slots 621.

[0061] Specifically, the plurality of positioning slots 621 are equivalent to a plurality of different gears corresponding to the flip angle of the valve 610 (eg Figure 10-A to Figure 10-D). For example, when the valve stem 620 is pushed backward, when the positioning tooth 641 engages with the positioning slot 621 at the rear side, the valve 610 flips to a smaller angle (i.e., the valve 610 is in a small gear position), and the fresh air outlet 503 is partially blocked by the valve 610. The fresh air outlet 503 is smaller, and the amount of fresh air that can pass through is smaller. The valve stem 620 is pushed backward continuously until the positioning tooth 641 engages with the positioning slot 621 at the front side, and the valve 610 is close to fully opening the fresh air outlet 503 (i.e., the valve 610 is in a large gear position). At this time, the fresh air outlet 503 is larger, and the amount of fresh air that can pass through is larger.

[0062] In the above embodiment, when the positioning tooth 641 moves from one of the positioning slots 621 to another adjacent positioning slot 621, the angle at which the valve 610 is flipped (hereinafter referred to as the flip angle) corresponds to the size of the gear change. Theoretically, the flip angle can be greater than 0° but not more than 90°. However, in order to achieve fine-tuning of the size of the fresh air outlet 503, preferably, the flip angle does not exceed 45°. Obviously, the flip angle should not be too small, otherwise the adjustment amount will be too weak. Therefore, in this embodiment, the flip angle is at least 10° and not more than 30°. For example, the flip angle is 10°, 15°, 20°, 30°, etc.

[0063] Here, the valve stem 620 is provided with four positioning slots 621 as an example: the four positioning slots 621 are, from back to front, a first positioning slot 621a, a second positioning slot 621b, a third positioning slot 621c, and a fourth positioning slot 621d.

[0064] See also Figure 10-A When the positioning tooth 641 is located in the first positioning groove 621a, the valve 610 is in a closed state.

[0065] See also Figure 10-B When the positioning tooth 641 moves from the first positioning slot 621a to the second positioning slot 621b, the flip angle is 30°. At this time, the valve 610 reaches the first gear position, and the angle between the valve 610 and the air outlet surface of the fresh air outlet 503 is 30°.

[0066] See also Figure 10-C When the positioning tooth 641 moves from the second positioning slot 621b to the third positioning slot 621c, the flip angle of the valve 610 is 30°. At this time, the valve 610 reaches the second gear position, and the angle between the valve 610 and the air outlet surface of the fresh air outlet 503 is 60°.

[0067] See also Figure 10-DWhen the positioning tooth 641 moves from the third positioning slot 621c to the fourth positioning slot 621d, the flip angle of the valve 610 is 30°. At this time, the valve 610 reaches the third gear position, and the angle between the valve 610 and the air outlet surface of the fresh air outlet 503 is 90°, and the fresh air outlet 503 is opened to the maximum.

[0068] See also Figure 10-A to Figure 10-B It is also considered that in the process of closing the fresh air valve 600, the fresh air valve 600 may be excessively pulled out of the window air conditioner, causing damage to the fresh air valve 600. In this embodiment, to avoid this situation, the valve stem 620 is provided with a stopper protrusion 622, and the guide sleeve 640 is provided with a stopper step 642 located in front of the stopper protrusion 622, and the stopper step 642 is used to abut against the stopper protrusion 622.

[0069] Specifically, the stopper protrusion 622 is located at the rear side of the positioning slot 621, and correspondingly, the stopper step 642 is located at the rear side of the positioning tooth 641. When the valve stem 620 is pulled forward until the positioning tooth 641 engages with the positioning slot 621 at the rear side, the stopper step 642 and the stopper protrusion 622 are correspondingly abutted, thereby preventing the valve stem 620 from moving forward further, thereby limiting the fresh air valve 600 from being excessively pulled out of the window air conditioner.

[0070] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A window air conditioner, characterized in that: The window air conditioner comprises: A housing, wherein the housing is provided with an indoor air outlet; An indoor air duct assembly is installed in the housing, and the indoor air duct assembly is provided with an indoor air duct connected to the indoor air outlet, and a fresh air outlet connecting the indoor air duct and the outdoor environment; Fresh air valve, the fresh air valve comprises a valve and a valve stem, the valve is flip-mounted at the fresh air outlet, the valve stem is inserted into the housing and connected to the valve, the movement of the valve stem can drive the valve to flip and open or close the fresh air outlet, the valve comprises a main valve plate and a side valve plate, the main valve plate and the side valve plate are arranged at an angle, a rotating shaft for the valve to flip is provided at the connection between the main valve plate and the side valve plate, and one end of the side valve plate away from the rotating shaft is pivotally connected to the rear end of the valve stem; The shell also includes a front panel, and the front panel is provided with an air outlet grille opposite to the indoor air outlet, and the front end of the valve stem passes outward from the grille gap of the air outlet grille.

2. The window air conditioner according to claim 1, characterized in that: The valve stem is inserted into the shell in the front-rear direction. When the valve stem moves in the front-rear direction, the valve flips to open or close the fresh air inlet.

3. The window air conditioner according to claim 2, characterized in that: A notch is provided at one end of the side valve plate away from the rotating shaft, a pivot shaft is provided at the opening position of the notch, a pivot hole is provided at the rear end of the valve stem, and the pivot hole is pivotally connected to the pivot shaft.

4. The window air conditioner according to claim 3, characterized in that: The pivot hole is in the shape of a long strip extending toward the valve, and an opening for inserting the pivot shaft is formed at one end of the pivot hole close to the valve. The opening is bent laterally and is gradually narrowed from the outer side of the pivot hole to the inner side thereof.

5. The window air conditioner according to claim 2, characterized in that: The main valve plate and the side valve plate are integrally formed.

6. The window air conditioner according to claim 2, characterized in that: The fresh air valve also includes a guide sleeve fixedly mounted on the indoor air duct assembly, the guide sleeve is sleeved on the valve stem, and the valve stem is slidable in a front-rear direction relative to the guide sleeve.

7. The window air conditioner according to claim 6, characterized in that: The valve stem is provided with a plurality of positioning slots spaced apart in the front-rear direction, and the guide sleeve is provided with positioning teeth, which can be selectively clamped and fixed with any one of the positioning slots.

8. The window air conditioner according to claim 7, characterized in that: When the positioning tooth moves from one of the positioning slots to another adjacent positioning slot, the valve is flipped over an angle of no more than 45°.

9. The window air conditioner according to claim 8, characterized in that: When the positioning tooth moves from one of the positioning slots to another adjacent positioning slot, the valve flips over an angle of at least 10° and not more than 30°.

10. The window air conditioner according to claim 6, wherein: A stopper protrusion is convexly arranged on the rear part of the valve stem, and a stopper step is arranged on the guide sleeve. The stopper step is located on the front side of the stopper protrusion so as to abut against the stopper protrusion.

11. The window air conditioner according to any one of claims 1 to 10, characterized in that: The fresh air valve also includes a valve sleeve, which is installed at the fresh air outlet, and the valve can be flipped and installed in the valve sleeve.

12. The window air conditioner according to any one of claims 1 to 10, characterized in that: The rear cover of the fresh air outlet is provided with a waterproof cover, and the lower end of the waterproof cover has a fresh air outlet connected with the fresh air outlet.

13. The window air conditioner according to any one of claims 1 to 10, characterized in that: The outer end of the valve stem is provided with a hand-held portion; or, the valve stem is connected to a motor to be driven to move by the motor.

14. The window air conditioner according to any one of claims 1 to 10, characterized in that: The window air conditioner includes a centrifugal wind wheel, an axial flow wind wheel, an indoor heat exchanger, an outdoor heat exchanger, and an outdoor air duct assembly installed in a shell; wherein the indoor heat exchanger and the centrifugal wind wheel are located in the indoor air duct; the outdoor air duct assembly is provided with an outdoor air duct, and the outdoor heat exchanger and the axial flow wind wheel are located in the outdoor air duct.

15. The window air conditioner according to claim 14, wherein: The shell includes a chassis, and a shell cover and a front panel installed on the chassis. The shell cover is located at the rear side of the front panel and spliced ​​with the front panel. The centrifugal wind wheel, axial flow wind wheel, indoor heat exchanger, outdoor heat exchanger, and outdoor air duct assembly are installed on the chassis.

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