air conditioner indoor unit

Abstract

This invention belongs to the field of air conditioning technology, specifically providing an indoor air conditioning unit. The indoor air conditioning unit includes a casing with an air inlet and an air outlet, and at least one vertical air guide vane assembly disposed at the air outlet. The vertical air guide vane assembly includes a pair of main air guide vanes and a secondary air guide vane. The secondary air guide vane is disposed at the front between the pair of main air guide vanes. The main air guide vanes and the secondary air guide vane are configured to swing left and right in a controlled manner, thereby enabling the indoor air conditioning unit to have multiple air supply modes. The indoor air conditioning unit of this invention can achieve more air supply modes by means of the vertical air guide vane assembly, enriching the air supply modes of the indoor air conditioning unit.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air conditioners, and particularly provides an air conditioner indoor unit. BACKGROUND

[0002] The existing air conditioner indoor unit is generally provided with a horizontal air deflector and a vertical air deflector, so as to guide the blowing direction of the air conditioner air in the up-down direction through the horizontal air deflector and in the left-right direction through the vertical air deflector.

[0003] The air supply mode of the existing air conditioner indoor unit is relatively single, and only up-down and left-right swing can be realized, which is difficult to meet the increasing demand of users. SUMMARY

[0004] An object of the application is to provide a new air conditioner indoor unit to enrich the air supply mode of the air conditioner indoor unit.

[0005] A further object of the application is to realize the natural wind air supply mode of the air conditioner indoor unit.

[0006] To achieve the above object, the air conditioner indoor unit provided by the application comprises:

[0007] A shell having an air inlet and an air outlet;

[0008] At least one vertical air deflector group is arranged at the air outlet, the vertical air deflector group comprises a pair of main air deflectors and a sub air deflector, the sub air deflector is arranged at the front part between the pair of main air deflectors, and the main air deflectors and the sub air deflector are configured to be controlled to swing left and right, so that the air conditioner indoor unit has multiple air supply modes.

[0009] Optionally, the cross section of the main air deflector is elliptical, the ratio of the major axis to the minor axis of the elliptical shape is greater than 5; and / or, the cross section of the sub air deflector is elliptical, the ratio of the major axis to the minor axis of the elliptical shape is greater than 3.

[0010] Optionally, the multiple air supply modes include a natural wind air supply mode, and the air conditioner indoor unit is configured to control the main air deflectors to swing left and right at a first preset frequency and control the sub air deflector to swing left and right at a second preset frequency when operating in the natural wind air supply mode; wherein, the two opposite main air deflectors are parallel to each other.

[0011] Optionally, the second preset frequency is greater than the first preset frequency.

[0012] Optionally, the swing amplitude of the sub air deflector decreases with the increase of the included angle between the main air deflector and the front-rear direction of the air conditioner indoor unit.

[0013] Optionally, the swing range β of the auxiliary air deflector is determined by the following formula:

[0014]

[0015] wherein β0 is the maximum swing range of the auxiliary air deflector, k is a correction coefficient, D is the maximum vertical distance between the two main air deflectors, L is the length of the auxiliary air deflector, and a is the included angle between the main air deflector and the front-rear direction of the air conditioner indoor unit.

[0016] Optionally, the multiple air supply modes include a wide-range air supply mode, and the air conditioner indoor unit is configured to, when operating in the wide-range air supply mode, control the main air deflectors in each of the vertical air deflector groups to swing outward to a first position to form a reverse eight-shaped structure, and control the auxiliary air deflector to be parallel to the front-rear direction of the air conditioner indoor unit.

[0017] Optionally, the multiple air supply modes include a long-distance air supply mode, and the air conditioner indoor unit is configured to, when operating in the long-distance air supply mode, control the main air deflectors in each of the vertical air deflector groups to swing inward to a second position to form an eight-shaped structure, and control the auxiliary air deflector to be parallel to the front-rear direction of the air conditioner indoor unit.

[0018] Optionally, the multiple air supply modes include a parallel air supply mode, and the air conditioner indoor unit is configured to, when operating in the parallel air supply mode, control the main air deflectors and the auxiliary air deflector to be parallel to the front-rear direction of the air conditioner indoor unit.

[0019] Optionally, the air conditioner indoor unit further comprises a first step motor for driving the main air deflectors to rotate and a second step motor for driving the auxiliary air deflector to rotate.

[0020] Based on the foregoing description, those skilled in the art can understand that, in the foregoing technical solutions of the present application, by providing at least one vertical air deflector group at the air outlet, and making the vertical air deflector group include a pair of main air deflectors and an auxiliary air deflector, the auxiliary air deflector is arranged at the front between the pair of main air deflectors, and the main air deflectors and the auxiliary air deflector are configured to be controlled to swing left and right, so that the air conditioner indoor unit can realize more air supply modes by means of the vertical air deflector group, thereby enriching the air supply modes of the air conditioner indoor unit.

[0021] Further, by setting the cross sections of the main air deflectors and the auxiliary air deflector to be elliptical, the air resistance of the main air deflectors and the auxiliary air deflector is reduced.

[0022] Further, when operating in the natural air supply mode, by controlling the main air deflectors to swing left and right at a first preset frequency and controlling the auxiliary air deflector to swing left and right at a second preset frequency, the air conditioner indoor unit can simulate natural air supply.

[0023] Further, by making the relative two main guide vanes parallel to each other, making the second preset frequency greater than the first preset frequency, the sub-guide vane is quickly rotated between the relative two main guide vanes, thereby disturbing the airflow blown from the relative two main guide vanes, making the airflow blown from the relative two main guide vanes fast and slow, large and small, realizing the simulation of natural wind, and improving the comfort of the user.

[0024] Further, the swing amplitude β of the sub-guide vane is determined by the above formula, so that the swing amplitude of the sub-guide vane can be reduced as the angle between the main guide vane and the front and rear direction of the air conditioner indoor unit increases, avoiding collision between the sub-guide vane and the main guide vanes on both sides.

[0025] Other benefits of the present application will be described in detail in the following with reference to the accompanying drawings, so that those skilled in the art can more clearly understand the improvement purposes, features and advantages of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the present application, the following will describe some embodiments of the present application with reference to the accompanying drawings. Those skilled in the art should understand that the same components or parts indicated by the same reference numerals in different drawings are the same or similar; the drawings of the present application are not necessarily drawn to scale with each other.

[0027] In the drawings:

[0028] Figure 1 is a first axial view of an air conditioner indoor unit according to the purpose of the present application;

[0029] Figure 2 is Figure 1 is a second axial view of an air conditioner indoor unit;

[0030] Figure 3 is a horizontal cross-sectional view of a vertical guide vane group in some embodiments of the present application;

[0031] Figure 4 is Figure 3 is a position schematic view of the vertical guide vane group in a parallel air supply mode;

[0032] Figure 5 is Figure 3 is a position schematic view of the vertical guide vane group in a wide area air supply mode;

[0033] Figure 6 is Figure 3 is a position schematic view of the vertical guide vane group in a long distance air supply mode;

[0034] Figure 7 isFigure 3 FIG. 8 is a schematic view of a first position of the vertical air deflector group in a natural wind air supply mode;

[0035] Figure 8 is Figure 3 FIG. 9 is a schematic view of a second position of the vertical air deflector group in a natural wind air supply mode;

[0036] Figure 9 is Figure 3 FIG. 10 is a schematic view of a third position of the vertical air deflector group in a natural wind air supply mode. DETAILED DESCRIPTION

[0037] It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present application, rather than all the embodiments of the present application, and are intended to explain the technical principles of the present application, and not to limit the protection scope of the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor shall fall within the protection scope of the present application.

[0038] It should be noted that in the description of the present application, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] Further, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] Furthermore, it should be noted that in the description of this invention, the terms "coldness" and "heat" are two descriptions of the same physical state. That is, the higher the "coldness" of a target object (e.g., evaporator, air, condenser, etc.), the lower its "heat," and vice versa. A target object absorbs "coldness" while releasing "heat," and releases "coldness" while absorbing "heat." A target object retains "coldness" or "heat" to maintain its current temperature. "Refrigeration" and "heat absorption" are two descriptions of the same physical phenomenon; that is, a target object (e.g., an evaporator) absorbs heat while refrigerating.

[0041] In this invention, the indoor unit of the air conditioner can be a wall-mounted air conditioner, a floor-standing air conditioner, or any other feasible form. To facilitate understanding by those skilled in the art, the indoor unit of the air conditioner of this invention will be described in detail below with reference to the accompanying drawings and using a wall-mounted air conditioner as an example.

[0042] like Figures 1 to 3 As shown, in some embodiments of the present invention, the indoor unit of the air conditioner includes a casing 100, a horizontal air guide plate 200, and at least one vertical air guide plate assembly 300. The casing 100 has an air inlet 101 and an air outlet 102. The horizontal air guide plate 200 is disposed at the air outlet 102 to guide the air blown out of the indoor unit in the vertical direction. At least one vertical air guide plate assembly 300 is also disposed at the air outlet 102 to guide the air blown out of the indoor unit in the horizontal direction.

[0043] The number of vertical wind guide vane assemblies 300 is not limited to Figure 3 The five shown can be any number of possible quantities, such as one, three, four, etc.

[0044] For ease of description and to enable those skilled in the art to quickly understand the technical solution of this invention, the following description focuses only on technical features that are strongly related (directly or indirectly related) to the technical problem and / or concept to be solved by this invention. Technical features that are less related to the technical problem and / or concept to be solved by this invention will not be described in detail. Since these less related technical features are common knowledge in the field, the omission of such features will not result in insufficient disclosure of this invention. For example, an air conditioner indoor unit also includes components such as a heat exchanger and a fan.

[0045] like Figure 3As shown, in some embodiments of the present invention, the vertical air guide vane assembly 300 includes a pair of main air guide vanes 310 and a secondary air guide vane 320, the secondary air guide vane 320 being disposed at the front between the pair of main air guide vanes 310. The main air guide vanes 310 and the secondary air guide vane 320 are configured to swing left and right in a controlled manner to enable the indoor unit of the air conditioner to have multiple air supply modes. The multiple air supply modes include at least one of parallel air supply mode, long-distance air supply mode, wide-area air supply mode, and natural air supply mode.

[0046] from Figure 3 As can be seen, the cross-sections of the main air guide plate 310 and the secondary air guide plate 320 are both elliptical to reduce the wind resistance of the main air guide plate 310 and the secondary air guide plate 320.

[0047] Furthermore, the ratio of the major axis to the minor axis of the ellipse of the cross-section of the main air vane 310 is greater than 5, so that the main air vane 310 has sufficient length and thickness. This ratio can be any feasible value such as 6, 7, 8, 11, etc.

[0048] Accordingly, the ratio of the major axis to the minor axis of the ellipse of the cross-section of the secondary air guide plate 320 is greater than 3, so that the secondary air guide plate 320 has sufficient length and thickness. This ratio can be any feasible value such as 4, 5, 7, 9, etc.

[0049] from Figure 3 It can also be seen that the length of the main air guide plate 310 is greater than the length of the secondary air guide plate 320. Preferably, the length of the main air guide plate 310 is more than twice the length of the secondary air guide plate 320.

[0050] like Figure 4 As shown, in some embodiments of the present invention, the indoor unit of the air conditioner further includes a first stepper motor 410 for driving the main air guide plate 310 to rotate and a second stepper motor 420 for driving the auxiliary air guide plate 320 to rotate.

[0051] like Figure 4 As shown, driven by the first stepper motor 410 and the second stepper motor 420, the main air guide plate 310 and the secondary air guide plate 320 can rotate to a position parallel to the front and rear direction of the air conditioner indoor unit, so that the air conditioner indoor unit can operate in the long-distance air supply mode.

[0052] like Figure 3 and Figure 4 As shown, when the indoor unit of the air conditioner is running in the long-distance air supply mode, the cold air blown out from the indoor unit is blown out between the two adjacent main air panels 310 and blown towards the front of the indoor unit.

[0053] like Figure 5As shown, driven by the first stepper motor 410 and the second stepper motor 420, the main air guide plate 310 in each vertical air guide plate group 300 swings outward to the first position to form an inverted V-shaped structure; and the secondary air guide plate 320 is parallel to the front and rear direction of the air conditioner indoor unit so that the air conditioner indoor unit can operate in the wide-area air supply mode.

[0054] from Figure 5 It can also be seen that the front ends of the two adjacent vertical air guide vane assemblies 300 abut against each other, so that the cold air blown out from the indoor unit of the air conditioner does not flow through, or flows very little through, the gap between the two vertical air guide vane assemblies 300.

[0055] Continue reading Figure 5 When the indoor unit of the air conditioner is running in the wide-area air supply mode, the cold air blown out from the indoor unit is blown out from the inverted V-shaped structure formed by the two main air vanes 310 and expands outward in the left and right directions to increase the coverage area of ​​the air conditioner in the left and right directions, thereby realizing the wide-area air supply of the indoor unit.

[0056] like Figure 6 As shown, driven by the first stepper motor 410 and the second stepper motor 420, the main air guide plate 310 in each vertical air guide plate group 300 swings inward to the second position to form a figure-eight structure; the auxiliary air guide plate 320 is controlled to be parallel to the front and rear direction of the air conditioner indoor unit so that the air conditioner indoor unit can operate in the long-distance air supply mode.

[0057] from Figure 6 It can also be seen that the rear ends of the two adjacent vertical air guide vane assemblies 300 abut against each other, so that the cold air blown out from the indoor unit of the air conditioner does not flow through, or flows very little through, the gap between the two vertical air guide vane assemblies 300.

[0058] Continue reading Figure 6 When the indoor unit of the air conditioner is running in the long-distance air supply mode, the cold air blown out from the indoor unit is blown out from the figure-eight structure formed by the two main air vanes 310 and converges inward in the left and right directions, thereby increasing the air velocity and making the air blown out from the indoor unit have a higher velocity and a longer blowing distance, thus realizing the long-distance air supply of the indoor unit.

[0059] at the same time, Figure 6 The two main air guide vanes 310 and the secondary air guide vane 320 between them form a Tesla valve structure, which promotes the airflow velocity inside and increases the jet distance of the airflow.

[0060] like Figures 7 to 9As shown, when the indoor unit of the air conditioner is running in natural wind mode, the main air guide vane 310 swings left and right at a first preset frequency, and the secondary air guide vane 320 swings left and right at a second preset frequency. During this process, the two opposing main air guide vanes 310 remain parallel to each other.

[0061] Optionally, all vertical guide vane assemblies 300 can swing in the same direction, that is, all vertical guide vane assemblies 300 swing to the left and then to the right at the same time, and so on.

[0062] Alternatively, the two adjacent vertical air guide vane assemblies 300 may swing in opposite directions, i.e., one swings to the left while the other swings to the right, so that the air blown out from the indoor unit of the air conditioner flows through the secondary air guide vane 320 as much as possible.

[0063] Furthermore, in some embodiments of the present invention, the second preset frequency is greater than the first preset frequency, so that the secondary air guide plate 320 rotates rapidly between the two opposing main air guide plates 310, thereby disturbing the airflow blown out between the two opposing main air guide plates 310, so that the airflow blown out between the two opposing main air guide plates 310 has different speeds and sizes, thus simulating natural wind and improving user comfort.

[0064] The second preset frequency can be any feasible value larger than the first preset frequency. For example, the second preset frequency can be any feasible value such as 0.5 times, 1 time, 2 times, or 3 times larger than the first preset frequency.

[0065] from Figures 7 to 9 It can be seen from this that the swing amplitude β of the auxiliary guide vane 320 is... Figures 7 to 9 The double-headed arrow in the image decreases as the angle α between the main air deflector 310 and the front-rear direction of the indoor unit increases.

[0066] Optionally, the oscillation amplitude β of the secondary guide vane 320 is determined by the following formula:

[0067]

[0068] Wherein, β0 is the maximum swing amplitude set by the secondary air guide plate 320, k is the correction coefficient, D is the maximum vertical distance between the two opposing primary air guide plates 310, L is the length of the secondary air guide plate 320, and α is the angle between the primary air guide plate 310 and the front-to-back direction of the air conditioner indoor unit.

[0069] In this invention, β0 can be a pre-set value or a value obtained through measurement. When β0 is obtained through measurement, the two main air deflectors 310 are first moved to... Figure 8The position shown, and then swing the sub-guide vane 320 left and right, stop when the sub-guide vane 320 swings to be about to contact the main guide vane 310. Measure the angle of the sub-guide vane 320 swinging left and right, the sum of the angles is β0.

[0070] In the present application, k can be obtained by comparing the swing amplitude of the sub-guide vane 320 at different positions of the main guide vane 310, or can be obtained by establishing a model. In an experiment made by the inventor of the present application, k is 1.2.

[0071] As shown in Figure 8 , when the vertical distance D between the opposite two main guide vanes 310 is the largest, the opposite two main guide vanes 310 are both parallel to the front-back direction of the air conditioner indoor unit.

[0072] In addition, the skilled person in the art can also determine the swing angle β of the sub-guide vane 320 corresponding to each angle α of the main guide vane 310 through multiple experiments as needed, and then store the mapping table of α-β into the air conditioner. So as to determine the swing angle β of the sub-guide vane 320 by detecting the angle α of the main guide vane 310 rotating.

[0073] In the present application, the air conditioner indoor unit is configured to, after receiving the instruction of the parallel air supply mode, control the first stepper motor 410 and the second stepper motor 420 to move the main guide vane 310 and the sub-guide vane 320 to Figure 3 and Figure 4 the position shown. At this time, the first stepper motor 410 and the second stepper motor 420 are at the initialization position.

[0074] The air conditioner indoor unit is also configured to, after receiving the instruction of the wide-range air supply mode, control the first stepper motor 410 and the second stepper motor 420 to first move the main guide vane 310 and the sub-guide vane 320 to Figure 3 and Figure 4 the position shown, so that the first stepper motor 410 and the second stepper motor 420 are initialized; and then move the main guide vane 310 and the sub-guide vane 320 to Figure 5 the position shown.

[0075] The air conditioner indoor unit is also configured to, after receiving the instruction of the long-distance air supply mode, control the first stepper motor 410 and the second stepper motor 420 to first move the main guide vane 310 and the sub-guide vane 320 to Figure 3 and Figure 4 the position shown, so that the first stepper motor 410 and the second stepper motor 420 are initialized; and then move the main guide vane 310 and the sub-guide vane 320 to Figure 6 the position shown.

[0076] The air conditioner indoor unit is further configured to, after receiving the instruction of the natural wind mode, control the first stepper motor 410 and the second stepper motor 420 to move the main guide vane 310 and the auxiliary guide vane 320 to the positions shown in FIG. 4A and FIG. 4B, so as to initialize the first stepper motor 410 and the second stepper motor 420; then control the main guide vane 310 to swing left and right at a first preset frequency, and control the auxiliary guide vane 320 to swing left and right at a second preset frequency, so as to make the main guide vane 310 and the auxiliary guide vane 320 reciprocate between the positions shown in FIG. 4A and FIG. 4B. Figure 3 and Figure 4 positions shown in FIG. 4A and FIG. 4B, so as to initialize the first stepper motor 410 and the second stepper motor 420; then control the main guide vane 310 to swing left and right at a first preset frequency, and control the auxiliary guide vane 320 to swing left and right at a second preset frequency, so as to make the main guide vane 310 and the auxiliary guide vane 320 reciprocate between the positions shown in FIG. 4A and FIG. 4B. Figures 7 to 9

[0077] Based on the foregoing description, those skilled in the art can understand that, by arranging at least one vertical guide vane set 300 at the air outlet 102, and making the vertical guide vane set 300 include a pair of main guide vanes 310 and an auxiliary guide vane 320, arranging the auxiliary guide vane 320 in front of the pair of main guide vanes 310, and configuring the main guide vanes 310 and the auxiliary guide vane 320 to swing left and right under control, the air conditioner indoor unit can realize more air supply modes by means of the vertical guide vane set 300, and the air supply modes of the air conditioner indoor unit are enriched.

[0078] So far, the technical solutions of the present application have been described in combination with the foregoing embodiments, but those skilled in the art can easily understand that the protection scope of the present application is not limited to these specific embodiments. Those skilled in the art can split and combine the technical solutions in the above-mentioned embodiments, or make equivalent changes or replacements to related technical features, without deviating from the technical principles of the present application. Any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present application will fall within the protection scope of the present application.​

Claims

1. An air conditioner indoor unit, comprising: a casing having an air inlet and an air outlet; at least one vertical air deflector group provided at the air outlet, the vertical air deflector group comprising a pair of main air deflectors and a sub air deflector, the sub air deflector being provided at a front portion between the pair of main air deflectors, the main air deflectors and the sub air deflector being configured to swing left and right under control to make the air conditioner indoor unit have multiple air supply modes; wherein a swing amplitude β of the sub air deflector is determined by the following formula: wherein β0 is a maximum swing amplitude set for the sub air deflector, k is a correction coefficient, D is a maximum vertical distance between the two opposite main air deflectors, L is a length of the sub air deflector, and a is an included angle between the main air deflectors and a front-rear direction of the air conditioner indoor unit.

2. The air conditioner indoor unit according to claim 1, wherein a cross section of the main air deflector is elliptical, a ratio of a major axis to a minor axis of the elliptical shape is greater than 5; and / or a cross section of the sub air deflector is elliptical, a ratio of a major axis to a minor axis of the elliptical shape is greater than 3.

3. The air conditioner indoor unit according to claim 1 or 2, wherein the multiple air supply modes include a natural wind air supply mode, the air conditioner indoor unit is configured to control the main air deflectors to swing left and right at a first preset frequency and control the sub air deflector to swing left and right at a second preset frequency when operating in the natural wind air supply mode; wherein the two opposite main air deflectors are parallel to each other.

4. The air conditioner indoor unit according to claim 3, wherein the second preset frequency is greater than the first preset frequency.

5. The air conditioner indoor unit according to claim 3, wherein the swing amplitude of the sub air deflector decreases as the included angle between the main air deflectors and the front-rear direction of the air conditioner indoor unit increases.

6. The air conditioner indoor unit according to claim 1 or 2, wherein the multiple air supply modes include a wide area wind air supply mode, the air conditioner indoor unit is configured to control the main air deflectors in each of the vertical air deflector groups to swing outward to a first position to form an inverted figure-eight structure and control the sub air deflector to be parallel to the front-rear direction of the air conditioner indoor unit when operating in the wide area wind air supply mode.

7. The air conditioner indoor unit according to claim 1 or 2, wherein the multiple air supply modes include a long distance air supply mode, the air conditioner indoor unit is configured to control the main air deflectors in each of the vertical air deflector groups to swing inward to a second position to form a figure-eight structure and control the sub air deflector to be parallel to the front-rear direction of the air conditioner indoor unit when operating in the long distance air supply mode.

8. The air conditioner indoor unit according to claim 1 or 2, wherein the multiple air supply modes include a parallel air supply mode, the air conditioner indoor unit is configured to control the main air deflectors and the sub air deflector to be parallel to the front-rear direction of the air conditioner indoor unit when operating in the parallel air supply mode.

9. The air conditioner indoor unit according to claim 1 or 2, wherein the air conditioner indoor unit further comprises a first step motor for driving the main air deflectors to rotate and a second step motor for driving the sub air deflector to rotate.

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