Wall-mounted air conditioner indoor unit

Abstract

The present invention provides a wall-mounted air conditioner indoor unit, which includes a housing and a crossflow fan. The housing defines a crossflow air duct, and the crossflow air duct has an air outlet. The crossflow fan is arranged at the inlet of the crossflow air duct, and is used to cause the regulated airflow in the crossflow air duct to blow to the outside of the housing through the air outlet. The crossflow air duct is defined by a plurality of air duct walls, and one or more air duct walls include at least one adjustment section, and each adjustment section is configured to be movable in position so as to adjust the volume of the crossflow air duct. The wall-mounted air conditioner indoor unit of the present invention can select the optimal air duct volume according to the operation mode, thereby improving the air supply efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a wall-mounted air conditioning indoor unit. Background Art

[0002] The indoor unit of a wall-mounted air conditioner often supplies air through a crossflow fan. A crossflow air duct is provided in the housing to match the crossflow fan.

[0003] In order to improve air supply efficiency, most technicians in the field of air conditioning focus on improving crossflow fans to improve the operating efficiency of fans. However, the shape and structure of crossflow ducts are relatively fixed and lack room for improvement. Summary of the invention

[0004] An object of the present invention is to provide a wall-mounted air conditioner indoor unit with improved cross-flow air duct to enhance air supply efficiency.

[0005] Another object of the present invention is to enable a wall-mounted air conditioner indoor unit to select an optimal air duct volume according to an operating mode, thereby improving air supply efficiency.

[0006] In particular, the present invention provides a wall-mounted air conditioner indoor unit, comprising:

[0007] a housing defining a cross-flow air duct having an air outlet; and

[0008] a crossflow fan, disposed at the inlet of the crossflow air duct, for causing the conditioned airflow in the crossflow air duct to blow to the outside of the housing through the air outlet; and

[0009] The cross-flow air duct is defined by a plurality of air duct walls, one or more of the air duct walls comprises at least one adjustment section, and each of the adjustment sections is configured to be movable in position so as to adjust the volume of the cross-flow air duct.

[0010] Optionally, the air duct wall with adjustable shape includes two adjusting sections, which are arranged along the airflow direction and can be rotatably changed in position respectively;

[0011] The rotating ends of the two adjusting sections are away from each other, and the free end of one adjusting section overlaps the other adjusting section, so as to adjust the volume of the crossflow air duct by rotating together in a direction approaching or moving away from the crossflow air duct.

[0012] Optionally, the plurality of air duct walls include a volute and a volute tongue extending along the crossflow air duct, and two end walls respectively located at both ends of the crossflow air duct in the length direction;

[0013] The volute comprises two adjusting sections.

[0014] Optionally, the volute further comprises an inlet section and an outlet section arranged at intervals along the airflow direction;

[0015] The rotating ends of the two regulating sections are rotatably connected to the downstream end of the inlet section and the upstream end of the outlet section respectively.

[0016] Optionally, the regulating section connected to the inlet section overlaps the inner surface of the regulating section connected to the outlet section.

[0017] Optionally, a recess is formed on the inner surface of the adjusting section connected to the outlet section to accommodate another adjusting section.

[0018] Optionally, flanges are formed at both ends of the length direction of each adjustment section to seal with the two end walls respectively.

[0019] Optionally, each of the end walls is provided with a sealing groove open to the outside of the cross-flow air duct to accommodate the flanges of the two adjustment sections.

[0020] Optionally, a vibration-damping sealing strip is provided at the free end of each adjusting section.

[0021] Optionally, the wall-mounted air conditioner indoor unit is configured such that: when operating in cooling mode, the two adjustment sections are placed parallel to each other; when operating in heating mode, the two adjustment sections are rotated from a parallel position to another position away from the cross-flow air duct to expand the volume of the cross-flow air duct.

[0022] In the wall-mounted air conditioner indoor unit of the present invention, one or more air duct walls include at least one adjustment section, and each adjustment section is configured to be movable so as to adjust the volume of the cross-flow air duct. In this way, the wall-mounted air conditioner indoor unit can adjust the volume of the cross-flow air duct to the most appropriate size according to different operation modes, so as to reduce the resistance of the air flow, reduce the wind loss, and make the air supply efficiency higher.

[0023] Furthermore, in the wall-mounted air-conditioning indoor unit of the present invention, the rotating ends of the two adjustment sections are far away from each other and the free ends are overlapped, so as to jointly adjust the volume of the cross-flow air duct by rotating in a direction close to or away from the cross-flow air duct, thereby realizing stepless adjustment of the volume, and the design is very ingenious.

[0024] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0026] Figure 1 is a schematic structural diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention;

[0027] Figure 2 It is cut along a vertical plane extending forward and backward Figure 1 A cross-sectional enlarged view of the indoor unit obtained;

[0028] Figure 3 yes Figure 2 The schematic diagram of the state of the indoor unit of the wall-mounted air conditioner shown in FIG. 1 after the volume of the cross-flow air duct is increased;

[0029] Figure 4 yes Figure 1 A schematic diagram of the structure of the skeleton part of the shell in the indoor unit of the wall-mounted air conditioner shown;

[0030] Figure 5 It is a schematic diagram of the structure of two regulating sections;

[0031] Figure 6 It is a schematic diagram of the back view of the shell skeleton. DETAILED DESCRIPTION

[0032] Reference below Figures 1 to 6 To describe the wall-mounted air-conditioning indoor unit of the present invention, the directions or positional relationships indicated by “front”, “rear”, “up”, “down”, “top”, “bottom”, “inside”, “outside”, and “lateral”, etc., are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0033] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first", "second", etc. may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0034] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", "coupled" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0035] Figure 1 is a schematic structural diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention; Figure 2 It is cut along a vertical plane extending forward and backward Figure 1 A cross-sectional enlarged view of the indoor unit obtained; Figure 3 yes Figure 2 The wall-mounted air conditioner indoor unit is shown in a schematic diagram of the state after the volume of the cross-flow duct 15 is increased; Figure 4 yes Figure 1 The schematic diagram of the structure of the skeleton part of the shell 10 in the wall-mounted air conditioner indoor unit is shown.

[0036] The embodiment of the present invention provides a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit is the indoor part of a split wall-mounted room air conditioner, and is used to regulate indoor air, such as cooling / heating, dehumidifying, introducing fresh air, etc.

[0037] like Figures 1 to 4 As shown, the wall-mounted air conditioner indoor unit may generally include a housing 10 and a cross-flow fan 40 .

[0038] The housing 10 defines a crossflow duct 15 having an air outlet 12 . The crossflow fan 40 is disposed at the inlet of the crossflow duct 15 to force the conditioned airflow in the crossflow duct 15 to blow to the outside of the housing 10 through the air outlet 12 .

[0039] Specifically, the housing 10 defines a receiving space for receiving the main body components of the wall-mounted air conditioner indoor unit. The housing 10 may include a frame for defining a cross-flow duct 15 (refer to Figure 4 , Figure 4 That is, only the skeleton is shown) and the panels wrapped around the skeleton for sealing and decoration (reference Figure 1 The cross-flow air duct 15 is defined by a plurality of air duct walls 100, 200, 300. Figures 2 to 4As shown, these air duct walls may include a volute 200 and a volute tongue 100 extending along the crossflow air duct 15, and two end walls 300 respectively located at both ends of the length direction of the crossflow air duct 15. The housing 10 and the crossflow air duct 15 are both long strips extending horizontally in the length direction, and the axis of the crossflow fan 40 is parallel to the length direction (X direction) of the housing 10. Under the action of the crossflow fan 40, the regulated airflow in the housing 10 enters the crossflow air duct 15, is guided by the crossflow air duct 15, and finally reaches the air outlet 12 to blow toward the indoor environment, completing the regulation of the indoor environment. The regulated airflow may be a cold airflow, a hot airflow, a fresh airflow, a purified airflow, and the like. The air outlet 12 may be provided with air guide components such as air guide plates and swing blades to adjust the air outlet direction of the air outlet 12.

[0040] Furthermore, an indoor heat exchanger 30 is provided inside the housing 10. The indoor heat exchanger 30 and the throttling device are connected to the compressor, the outdoor heat exchanger and other refrigeration elements arranged in the outdoor unit through pipelines to form a vapor compression refrigeration cycle system. Under the action of the crossflow fan 40, the indoor air enters the housing 10 through the air inlet 11 at the top of the housing 10, completes forced convection heat exchange with the indoor heat exchanger 30, forms cold air or hot air, and then enters the crossflow air duct 15.

[0041] Among these air duct walls, one or more air duct walls include at least one adjustment segment 220 , 230 , and each adjustment segment 220 , 230 is configured to be movable in position so as to adjust the volume of the cross-flow air duct 15 .

[0042] The inventor has found through research that the crossflow duct of the wall-mounted air conditioner indoor unit will have energy loss in the process of guiding the airflow, and the size of these losses is related to the temperature of the air supply airflow. Specifically, in the two working states of cooling and heating, the movement laws of air molecules at different temperatures are different, and the resistance encountered by air at different temperatures during the flow process is different. The flow field required for air flow is different. Therefore, the wind generated by the movement of air molecules requires a suitable crossflow duct to better exert the cooling and heating effects of the wall-mounted air conditioner indoor unit. However, the crossflow duct of the existing wall-mounted air conditioner indoor unit is fixed and cannot be adjusted.

[0043] The embodiment of the present invention makes the volume of the crossflow duct 15 adjustable. In the cooling mode, the volume of the crossflow duct 15 is reduced, and the cold accumulated in the heat exchanger 30 in a short period of time is released in a concentrated manner, avoiding excessive internal losses, and being able to more efficiently transport the low-temperature airflow to the indoor environment, shortening the cooling time. In the heating mode, the volume of the crossflow duct 15 is increased, so that the heat exchanger 30 can accumulate enough heat and fully release it, and then mix it with the room temperature air in the room, thereby improving the heating effect.

[0044] In summary, the wall-mounted air conditioner indoor unit of the embodiment of the present invention can adjust the volume of the cross-flow duct 15 to the most appropriate size according to different operating modes, so as to reduce the air flow resistance, reduce the wind loss, and increase the air supply efficiency.

[0045] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the aforementioned adjustable-shape air duct wall 200 includes two adjustment sections 220 and 230, which are arranged along the airflow direction and can be rotatably changed in position. As shown in the figure, the rotating end (the end adjacent to the rotating axis) of one adjustment section 220 is end A, and the free end (the other end opposite to the rotating end) is end B. The rotating end of the other adjustment section 230 is end D, and the free end is end C. The rotating ends A and D of the two adjustment sections 220 and 230 are far away from each other, and the free end of one adjustment section overlaps the other adjustment section. When the two adjustment sections 220 and 230 rotate together in the direction of approaching or moving away from the crossflow air duct 15, the volume of the crossflow air duct 15 can be adjusted.

[0046] Specifically, when the two adjustment sections 220 and 230 are both rotated toward the direction close to the crossflow air duct 15, the volume of the crossflow air duct 15 will become smaller. Figure 2 When both adjustment sections 220 and 230 rotate in a direction away from the crossflow air duct 15, the volume of the crossflow air duct 15 will increase. Figure 3 Of course, after the adjustment is completed, the two adjustment sections 220, 230 need to be in an overlapping state to avoid a gap for air leakage between the two. The free ends B and C of each adjustment section 220, 230 can be provided with a vibration-damping sealing strip to achieve a sealing function and a vibration-damping effect.

[0047] When the wall-mounted air conditioner indoor unit operates in cooling mode, the two adjustment sections 220 and 230 are parallel to each other. Figure 2 When the wall-mounted air conditioner indoor unit is in heating mode, the two adjustment sections 220 and 230 are rotated from a parallel position away from the crossflow duct 15 to another position to expand the volume of the crossflow duct 15, such as Figure 3 Of course, it is understandable that the cross-flow duct 15 may have more than Figure 2 and Figure 3 Two volume adjustment levels, the crossflow duct 15 can also be adjusted to Figures 2 to 3 Any position in between can be adjusted steplessly.

[0048] In the wall-mounted air-conditioning indoor unit of the embodiment of the present invention, the rotating ends of the two adjustment sections 220 and 230 are far away from each other and the free ends are overlapped, so as to jointly adjust the volume of the cross-flow air duct 15 by rotating in a direction close to or away from the cross-flow air duct 15. In this way, stepless adjustment of the volume can be achieved, and the design is very clever.

[0049] Figure 5 It is a schematic diagram of the structure of two adjustment sections 220 and 230.

[0050] like Figure 5 As shown, the two adjustment sections 220 and 230 are respectively provided with motors 225 and 235 to drive the two adjustment sections 220 and 230 to rotate. The motors 225 and 235 are electrically connected to the controller of the wall-mounted air conditioner indoor unit to be controlled by the controller so that the controller automatically adjusts the volume of the crossflow duct 15 when controlling the operation mode of the air conditioner. The motors 225 and 235 can be stepper motors.

[0051] In some embodiments of the present invention, Figures 2 to 4 As shown, the volute 200 may include the two adjustment sections 220, 230, that is, the shape of the volute 200 is adjustable, so as to adjust the volume of the cross-flow air duct 15. In other embodiments, the volute tongue 100 or the end wall 300 may include two adjustment sections. Alternatively, the volute 200, the volute tongue 100, and the two end walls 300 may all include two adjustment sections, so as to expand the adjustable range of the volume.

[0052] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the volute 200 may further include an inlet section 210 and an outlet section 240 arranged at intervals along the airflow direction. The rotating ends A and D of the two adjusting sections 220 and 230 are rotatably connected to the downstream end (i.e., the lower end) of the inlet section 210 and the upstream end (i.e., the upper end) of the outlet section 240, respectively. That is, in this embodiment, the two adjusting sections 220 and 230 only constitute a part of the volute 200, not all of it. Of course, in some alternative embodiments, the two adjusting sections 220 and 230 may also constitute the entirety of the volute 200, and this solution is also easy to understand and will not be repeated here.

[0053] Preferably, if Figure 2 and Figure 3 As shown, the regulating section 220 connected to the inlet section 210 can be overlapped on the inner surface of the regulating section 230 connected to the outlet section 240, and the inner side refers to the side of the inner wall defining the cross-flow air duct 15. This embodiment is arranged so that the airflow can flow better from the inner surface of the regulating section 220 to the inner surface of the regulating section 230. If it is not arranged in this way, if the regulating section 230 is overlapped on the inner surface of the regulating section 220, the airflow will impact the end of the regulating section 230 during the flow process, causing obstruction to the airflow.

[0054] Furthermore, in order to make the airflow transition from the inner surface of the adjustment section 220 to the inner surface of the adjustment section 230 more smoothly, as shown in FIG. Figure 2 and Figure 5As shown, a recessed portion 231 may be formed on the inner surface of the adjusting section 230 connected to the outlet section 240 to accommodate another adjusting section 220. In particular, in the cooling mode, when the two adjusting sections 220 and 230 are in an overlapping state, the inner surface of the adjusting section 220 is made coplanar with the inner surface of the non-recessed portion of the adjusting section 230 to reduce the unevenness of the surface caused by the overlap.

[0055] like Figure 5 As shown, in some embodiments, flanges 222 and 232 are formed at both ends of each adjusting section 220 and 230 in the length direction to seal with the two end walls 300. When the two adjusting sections 220 and 230 rotate in the direction away from the cross-flow air duct 15, their ends are away from the end wall 300 of the cross-flow air duct 15, and there will be gaps for air leakage. The flanges 222 and 232 are provided to avoid the above gaps and prevent the cross-flow air duct 15 from being poorly sealed.

[0056] Figure 6 It is a schematic diagram of the back view of the frame of the shell 10.

[0057] like Figure 4 and Figure 6 As shown, each end wall 300 can be provided with a sealing groove 310 open to the outside of the crossflow air duct 15 to accommodate the flanges 222, 232 of the two adjustment sections 220, 230. The groove walls on both sides of the sealing groove 310 can be sealed to block the wind, so that the sealing effect is better, and during the rotation of the adjustment sections 220, 230, the flanges 222, 232 are always in the sealing groove 310, so as to guide and restrict the movement of the adjustment sections 220, 230.

[0058] In other embodiments, the shape-adjustable air duct wall may include an adjustment section, so that the adjustment section constitutes a section of the air duct wall adjacent to the outlet, that is, the downstream end of the adjustment section constitutes the edge of the air outlet 12 .

[0059] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A wall-mounted air conditioner indoor unit, comprising: A housing, which defines a cross-flow air duct, wherein the cross-flow air duct has an air outlet; and a crossflow fan, disposed at the inlet of the crossflow air duct, for causing the conditioned airflow in the crossflow air duct to blow to the outside of the housing through the air outlet; and The cross-flow air duct is defined by a plurality of air duct walls, one or more of the air duct walls comprises at least one adjustment section, and each of the adjustment sections is configured to be movable in position so as to adjust the volume of the cross-flow air duct; The air duct wall with adjustable shape includes two adjusting sections, which are arranged along the air flow direction and can be rotatably changed in position respectively; the multiple air duct walls include a volute and a volute tongue extending along the cross-flow air duct, and the volute includes two adjusting sections; The rotating ends of the two adjusting sections are away from each other, and the free end of one adjusting section overlaps the other adjusting section, so as to adjust the volume of the cross-flow air duct by rotating together in a direction close to or away from the cross-flow air duct; The volute also includes an inlet section and an outlet section arranged at intervals along the airflow direction; The rotating ends of the two adjusting sections are rotatably connected to the downstream end of the inlet section and the upstream end of the outlet section respectively; The regulating section connected to the inlet section overlaps the inner surface of the regulating section connected to the outlet section.

2. The wall-mounted air conditioner indoor unit according to claim 1, wherein The plurality of air duct walls further include two end walls respectively located at two ends of the cross-flow air duct in the length direction.

3. The wall-mounted air conditioner indoor unit according to claim 1, wherein A recessed portion is formed on the inner surface of the adjusting section connected to the outlet section to accommodate another adjusting section.

4. The wall-mounted air conditioner indoor unit according to claim 2, wherein Both ends of each adjusting section in the length direction are respectively formed with flanges to seal with the two end walls respectively.

5. The wall-mounted air conditioner indoor unit according to claim 4, wherein Each of the end walls is provided with a sealing groove which is open toward the outside of the cross-flow air duct to accommodate the flanges of the two adjusting sections.

6. The wall-mounted air conditioner indoor unit according to claim 1, wherein A vibration-damping sealing strip is arranged at the free end of each adjusting section.

7. The wall-mounted air conditioner indoor unit according to claim 1, which is configured as follows: When operating in cooling mode, the two adjustment sections are placed parallel to each other; when operating in heating mode, the two adjustment sections are rotated from a parallel position to another position away from the cross-flow air duct to expand the volume of the cross-flow air duct.

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