An indoor unit and air conditioner

Abstract

This utility model provides an indoor unit and an air conditioner. The indoor unit includes a casing and an axial flow fan disposed within the casing. The casing has an upper air outlet and a lower air outlet. The upper air outlet is located on one axial side of the axial flow fan, and the lower air outlet is located on the other axial side of the axial flow fan. The axial flow fan is a reversible axial flow fan, and the indoor unit has an upper air outlet state and a lower air outlet state. In the upper air outlet state, the axial flow fan rotates forward to drive airflow into the lower air outlet and out through the upper air outlet. In the lower air outlet state, the axial flow fan rotates in reverse to drive airflow into the upper air outlet and out through the lower air outlet. This utility model solves the defect of existing axial flow indoor units that can only blow air downwards, allowing the indoor unit to be controlled to blow air upwards in cooling mode, so that the airflow blows upwards, avoiding the problem of cold air blowing directly on people and improving the comfort of cooling.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, specifically relating to an indoor unit and an air conditioner. Background Technology

[0002] Currently, wall-mounted units of household air conditioners typically use cross-flow fan blades as the air delivery component. However, cross-flow fan blades have a short air delivery distance and cannot achieve long-distance air delivery. Axial fans, as a common type of fan, have the characteristics of large air volume and low air pressure. Therefore, a small number of indoor wall-mounted units in the existing technology already use axial fans, which can be used as a reference for indoor wall-mounted unit design.

[0003] Traditional axial flow indoor units can only discharge air downwards. Because axial flow fans have a large air volume, cold air often blows directly on the air. Although the direct blowing of cold air can be avoided by using air guides and sweeping blades, the effect is limited and there are certain limitations. Therefore, this problem needs to be solved. Utility Model Content

[0004] Therefore, this utility model provides an indoor unit and an air conditioner that can solve the technical problem in the prior art where axial flow indoor units can only blow air downwards, resulting in frequent direct cold air blowing and affecting user comfort.

[0005] To solve the above problems, this utility model provides an indoor unit, which includes a housing and an axial flow fan disposed in the housing. The housing has an upper air outlet and a lower air outlet. The upper air outlet is located on one axial side of the axial flow fan, and the lower air outlet is located on the other axial side of the axial flow fan.

[0006] The axial flow fan is a reversible axial flow fan, and the indoor unit has an upward air outlet state and a downward air outlet state; wherein, in the upward air outlet state, the axial flow fan rotates forward to drive airflow to enter from the downward air outlet and exit from the upward air outlet; in the downward air outlet state, the axial flow fan rotates in reverse to drive airflow to enter from the upward air outlet and exit from the downward air outlet.

[0007] In some embodiments, the upwind outlet includes a first upwind outlet and a second upwind outlet, the downwind outlet includes a first downwind outlet and a second downwind outlet, and the axial flow fan includes a first axial flow fan and a second axial flow fan.

[0008] The first axial flow fan and the second axial flow fan are arranged at intervals. The first upper air outlet is located on one axial side of the first axial flow fan, and the first lower air outlet is located on the other axial side of the first axial flow fan. The second upper air outlet is located on one axial side of the second axial flow fan, and the second lower air outlet is located on the other axial side of the second axial flow fan.

[0009] Both the first axial flow fan and the second axial flow fan can be turned on or off independently.

[0010] In some embodiments, the indoor unit further includes a heat exchanger having a first heat exchange section, a second heat exchange section and a third heat exchange section connected in sequence. The first heat exchange section is located between the first upper air outlet and the first axial flow fan. The second heat exchange section separates the first axial flow fan and the second axial flow fan. The third heat exchange section is located between the second lower air outlet and the second axial flow fan.

[0011] In some embodiments, one end of the heat exchanger is bent to form the first heat exchange section, the other end of the heat exchanger is bent to form the third heat exchange section, and the portion of the heat exchanger between the first heat exchange section and the third heat exchange section forms the second heat exchange section.

[0012] The first heat exchange section, the second heat exchange section, and the third heat exchange section form a Z-shaped structure.

[0013] In some embodiments, the first upwind opening is provided with an openable first upper air guide plate, the second upwind opening is provided with an openable second upper air guide plate, the first downwind opening is provided with an openable first lower air guide plate, and the second downwind opening is provided with an openable second lower air guide plate.

[0014] In some embodiments, the indoor unit further includes a first filter, a second filter, a third filter, and a fourth filter;

[0015] The first filter is movable to the first upwind vent or to be moved away from the first upwind vent; the second filter is movable to the first downwind vent or to be moved away from the first downwind vent; the third filter is movable to the second upwind vent or to be moved away from the first upwind vent; and the fourth filter is movable to the second downwind vent or to be moved away from the second downwind vent.

[0016] In some embodiments, the housing is provided with a filter storage box; wherein,

[0017] The housing is also provided with a first track, which is used to guide the movement of the first filter screen to the first air vent or to the filter screen storage box so that the first filter screen is moved away from the first air vent.

[0018] And / or, the housing is further provided with a second track, the second track being used to guide the movement of the second filter screen to guide the second filter screen to the first downwind vent, or to guide the second filter screen into the filter screen storage box, so that the second filter screen is moved away from the first downwind vent;

[0019] And / or, the housing is further provided with a third track, which is used to guide the movement of the third filter screen to the second upper air vent, or to the filter screen storage box, so that the third filter screen is moved away from the second upper air vent;

[0020] And / or, the housing is further provided with a fourth track, which is used to guide the movement of the fourth filter screen to the second downdraft or to the filter storage box so that the fourth filter screen is moved away from the second downdraft.

[0021] In some embodiments, when the first upper air inlet is provided with an openable and closable first upper air guide plate, and the second upper air inlet is provided with an openable and closable second upper air guide plate, the first lower air inlet is provided with an openable and closable first lower air guide plate, and the second lower air inlet is provided with an openable and closable second lower air guide plate,

[0022] The indoor unit has a first upward air outlet state. In the first upward air outlet state, both the first axial fan and the second axial fan rotate forward. The first filter moves away from the first upward air outlet, the second filter moves to the first downward air outlet, the third filter moves away from the second upward air outlet, the fourth filter moves to the second downward air outlet, and the first upper air guide plate, the second upper air guide plate, the first lower air guide plate, and the second lower air guide plate are all open.

[0023] And / or, the indoor unit has a second upward air outlet state, in which the first axial fan rotates forward, the second axial fan is turned off, the first filter is moved away from the first upward air outlet, the second filter is moved to the first downward air outlet, the first upper air guide plate and the first lower air guide plate are both opened, and the second upper air guide plate and the second lower air guide plate are both closed.

[0024] And / or, the indoor unit has a third upward air outlet state, in which the first axial fan is closed, the second axial fan is turned on, the third filter is moved away from the second upward air outlet, the fourth filter is moved to the second downward air outlet, the first upper air guide plate and the first lower air guide plate are both closed, and the second upper air guide plate and the second lower air guide plate are both open;

[0025] And / or, the indoor unit has a first downward air outlet state, in which the first axial fan and the second axial fan are both reversed, the first filter is moved to the first upper air outlet, the second filter is moved away from the first lower air outlet, the third filter is moved to the second upper air outlet, the fourth filter is moved away from the second lower air outlet, and the first upper air guide plate, the second upper air guide plate, the first lower air guide plate and the second lower air guide plate are all opened;

[0026] And / or, the indoor unit has a second downward air outlet state, in which the first axial fan reverses, the second axial fan is turned off, the first filter moves to the first upper air outlet, the second filter moves away from the first lower air outlet, the first upper air guide plate and the first lower air guide plate are both opened, and the second upper air guide plate and the second lower air guide plate are both closed.

[0027] And / or, the indoor unit has a third downward air outlet state, in which the first axial fan is closed, the second axial fan is reversed, the third filter is moved to the second upward air outlet, the fourth filter is moved away from the second downward air outlet, the first upper air guide plate and the first lower air guide plate are both closed, and the second upper air guide plate and the second lower air guide plate are both open.

[0028] In some embodiments, the indoor unit further includes an indoor sensing module for sensing the location of people inside the room;

[0029] And / or, the rotational speed of the axial flow fan is adjustable.

[0030] This utility model also provides an air conditioner, which includes the indoor unit described in any one of the above-mentioned methods.

[0031] The indoor unit and air conditioner provided by this utility model have the following beneficial effects:

[0032] 1. This utility model uses a reversible axial flow fan, which allows the air conditioner to blow air both upwards and downwards, solving the defect that existing axial flow indoor units can only blow downwards. In the cooling mode, the indoor unit can be controlled to blow upwards, so that the airflow blows upwards, avoiding the problem of cold air blowing directly on people and improving the comfort of cooling.

[0033] 2. Since both the first axial flow fan and the second axial flow fan can be turned on or off independently, the first axial flow fan can control the air supply of the first upper air outlet and the first lower air outlet in the left zone, and the second axial flow fan can control the air supply of the second upper air outlet and the second lower air outlet in the right zone. Thus, the first axial flow fan and the second axial flow fan can work together to achieve air supply in the left and right zones of the air conditioner. Attached Figure Description

[0034] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0035] Figure 1 This is a side sectional view of the indoor unit of this utility model;

[0036] Figure 2 This is a front sectional view of the indoor unit of this utility model;

[0037] Figure 3a This is a schematic diagram of the indoor unit of this utility model in the first upper air outlet state;

[0038] Figure 3b This is a schematic diagram of the indoor unit of this utility model in the second upper air outlet state;

[0039] Figure 3c This is a schematic diagram of the indoor unit of this utility model in the third air outlet state;

[0040] Figure 4a This is a schematic diagram of the indoor unit of this utility model in the first downward air outlet state;

[0041] Figure 4b This is a schematic diagram of the indoor unit of this utility model in the second downward air outlet state;

[0042] Figure 4c This is a schematic diagram of the indoor unit of this utility model in the third downward air outlet state.

[0043] The attached figures are labeled as follows:

[0044] 1. Casing; 3. Heat exchanger; 5. Axial flow fan; 9. Gear; 10. Filter storage box; 11. First upper air guide plate; 12. Second upper air guide plate; 21. First filter screen; 22. Third filter screen; 31. First heat exchange section; 32. Second heat exchange section; 33. Third heat exchange section; 51. First axial flow fan; 52. Second axial flow fan; 81. Second filter screen; 82. Fourth filter screen; 91. First lower air guide plate; 92. Second lower air guide plate; 101. Upper air outlet; 102. Lower air outlet; 121. First sensing module; 122. Second right sensing module; 501. Axial flow fan blade; 502. Guide ring; 503. Motor; 504. Motor bracket; 101a. First upper air outlet; 101b. Second upper air outlet; 102a. First lower air outlet; 102b. Second lower air outlet. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0046] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0047] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0048] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0049] See also Figure 1As shown, according to an embodiment of the present invention, an indoor unit is provided, which includes a housing 1 and an axial flow fan 5 disposed within the housing 1. The housing 1 has an upper air outlet 101 and a lower air outlet 102. The upper air outlet 101 is located on one axial side of the axial flow fan 5, and the lower air outlet 102 is located on the other axial side of the axial flow fan 5. The axial flow fan 5 is a reversible axial flow fan. The indoor unit has an upper air outlet state and a lower air outlet state. In the upper air outlet state, the axial flow fan 5 rotates forward to drive airflow into the lower air outlet 102 and out through the upper air outlet 101. In the lower air outlet state, the axial flow fan 5 rotates in reverse to drive airflow into the upper air outlet 101 and out through the lower air outlet 102.

[0050] In the example above, by using a reversible axial flow fan, the air conditioner can blow air both upwards and downwards, which solves the defect that the existing axial flow indoor unit can only blow downwards. In the cooling mode, the indoor unit can be controlled to blow upwards so that the airflow blows upwards, avoiding the problem of cold air blowing directly on people and improving the comfort of the cooling air.

[0051] It should be noted that the indoor unit can use the top air outlet when cooling and the bottom air outlet when heating.

[0052] In some implementations, such as Figure 1 As shown, the aforementioned axial flow fan 5 includes an axial flow fan blade 501 and a motor 503 for driving the axial flow fan blade 501 to rotate. The axial flow fan blade 501 is a reversible axial flow fan blade, and the motor 503 is a motor that can rotate forward and reverse. This reversible motor, in conjunction with the reversible axial flow fan blade, enables the axial flow fan 5 to discharge air upwards when rotating forward and downwards when rotating backwards. The axial flow fan 5 also has a guide ring 502, which guides the airflow discharged from the axial flow fan 5. The axial flow fan 5 further includes a motor bracket 504, on which the motor 503 is mounted.

[0053] In some implementations, such as Figure 2 As shown, the aforementioned upper air vent 101 may include a first upper air vent 101a and a second upper air vent 101b, and the aforementioned lower air vent 102 includes a first lower air vent 102a and a second lower air vent 102b. The aforementioned axial flow fan 5 includes a first axial flow fan 51 and a second axial flow fan 52. The first axial flow fan 51 and the second axial flow fan 52 are arranged at intervals. The first upper air vent 101a is located on one axial side of the first axial flow fan 51, and the first lower air vent 102a is located on the other axial side of the first axial flow fan 51. The second upper air vent 101b is located on one axial side of the second axial flow fan 52, and the second lower air vent 102b is located on the other axial side of the second axial flow fan 52. Both the first axial flow fan 51 and the second axial flow fan 52 can be turned on or off independently.

[0054] In the example above, the first upper air vent 101a and the first lower air vent 102a can both be located on the left side of the indoor unit, and the second upper air vent 101b and the second lower air vent 102b can both be located on the right side of the indoor unit. Since both the first axial fan 51 and the second axial fan 52 can be turned on or off independently, the first axial fan 51 can control the air supply of the first upper air vent 101a and the first lower air vent 102a in the left zone, and the second axial fan 52 can control the air supply of the second upper air vent 101b and the second lower air vent 102b in the right zone. Thus, the first axial fan 51 and the second axial fan 52 can work together to achieve left and right zone air supply in the air conditioner. Specifically, when a person is on the left side of the indoor unit, only the left zone air supply can be turned on; similarly, when a person is on the right side of the indoor unit, only the right zone air supply can be turned on, thereby reducing the energy consumption of the air conditioner.

[0055] In some implementations, such as Figure 2 As shown, the aforementioned indoor unit may further include a heat exchanger 3, which has a first heat exchange section 31, a second heat exchange section 32, and a third heat exchange section 33 connected in sequence. The first heat exchange section 31 is located between the first upper air outlet 101a and the first axial flow fan 51, the second heat exchange section 32 separates the first axial flow fan 51 and the second axial flow fan 52, and the third heat exchange section 33 is located between the second lower air outlet 102b and the second axial flow fan 52.

[0056] In the above example, the first heat exchange section 31, the second heat exchange section 32 and the third heat exchange section 33 can not only meet the heat exchange requirements of both the first axial flow fan 51 and the second axial flow fan 52, but also increase the heat exchange area and improve the heat exchange efficiency.

[0057] In some implementations, such as Figure 2 As shown, one end of the aforementioned heat exchanger 3 is bent to form the aforementioned first heat exchange section 31, and the other end of the heat exchanger 3 is bent to form the aforementioned third heat exchange section 33. The portion of the heat exchanger 3 between the first heat exchange section 31 and the third heat exchange section 33 forms the aforementioned second heat exchange section 32. The first heat exchange section 31, the second heat exchange section 32, and the third heat exchange section 33 form a Z-shaped structure.

[0058] In the above example, the first heat exchange section 31, the second heat exchange section 32 and the third heat exchange section 33 are formed by bending a single heat exchanger 3, which is beneficial to the processing of the first heat exchange section 31, the second heat exchange section 32 and the third heat exchange section 33.

[0059] In some implementations, such as Figure 2As shown, the first upwind opening 101a is provided with an openable and closable first upper air guide plate 11, the second upwind opening 101b is provided with an openable and closable second upper air guide plate 12, the first downwind opening 102a is provided with an openable and closable first lower air guide plate 91, and the second downwind opening 102b is provided with an openable and closable second lower air guide plate 92.

[0060] In the example above, by installing air guide vanes at each air outlet, it is beneficial for the indoor unit to deliver air when it is discharging air up and down.

[0061] In some implementations, such as Figure 2 As shown, the aforementioned indoor unit also includes a first filter 21, a second filter 81, a third filter 22, and a fourth filter 82. The first filter 21 is movable to or away from the first up-vent 101a. The second filter 81 is movable to or away from the first down-vent 102a. The third filter 22 is movable to or away from the second up-vent 101b. The fourth filter 82 is movable to or away from the second down-vent 102b.

[0062] In the above example, when the corresponding air vent is receiving air, the filter can be moved to the air vent to filter the incoming air; when the corresponding air vent is venting air, the filter can be moved away from the air vent to reduce airflow resistance.

[0063] In some embodiments, the aforementioned housing 1 may be provided with a filter storage box 10 for storing and protecting the filter. The housing 1 may also be provided with a first track. This first track guides the movement of the first filter 21, directing it to the first upper air vent 101a or into the filter storage box 10, so that the first filter 21 can be moved away from the first upper air vent 101a.

[0064] In the above example, by setting a first track to guide the movement of the first filter 21, the movement accuracy of the first filter 21 can be improved.

[0065] In some embodiments, a second track may also be provided on the aforementioned housing 1. The second track is used to guide the movement of the second filter 81, so as to guide the second filter 81 to the first downdraft 102a, or to guide the second filter 81 into the filter storage box 10, so that the second filter 81 is removed from the first downdraft 102a.

[0066] In the example above, by setting a second track to guide the movement of the second filter 81, the movement accuracy of the second filter 81 can be improved.

[0067] In some embodiments, a third track may also be provided on the aforementioned housing 1. The third track is used to guide the movement of the third filter 22, so as to guide the third filter 22 to the second upper air vent 101b, or to guide the third filter 22 into the filter storage box 10, so that the third filter 22 is removed from the second upper air vent 101b.

[0068] In the example above, by setting a third track to guide the movement of the third filter 22, the movement accuracy of the third filter 22 can be improved.

[0069] In some embodiments, a fourth track may also be provided on the aforementioned housing 1. The fourth track is used to guide the movement of the fourth filter 82, so as to guide the fourth filter 82 to the second downdraft 102b, or to guide the fourth filter 82 into the filter storage box 10, so that the fourth filter 82 is removed from the second downdraft 102b.

[0070] In the example above, by setting a fourth track to guide the movement of the fourth filter 82, the movement accuracy of the fourth filter 82 can be improved.

[0071] It should be noted that each of the aforementioned filters can be driven by a motor in conjunction with gear 9 and rack and pinion structure. The specific drive structure of each filter is existing technology and will not be described in detail here.

[0072] In some embodiments, when a first closable upper air guide plate 11 is provided at the first upper air outlet 101a, and a closable second upper air guide plate 12 is provided at the second upper air outlet 101b, a closable first lower air guide plate 91 is provided at the first lower air outlet 102a, and a closable second lower air guide plate 92 is provided at the second lower air outlet 102b, the indoor unit has a first upper air outlet state, such as... Figure 3a As shown, in the first upward air outlet state, both the first axial flow fan 51 and the second axial flow fan 52 are rotating forward. The first filter screen 21 is moved away from the first upward air outlet 101a, the second filter screen 81 is moved to the first downward air outlet 102a, the third filter screen 22 is moved away from the second upward air outlet 101b, the fourth filter screen 82 is moved to the second downward air outlet 102b, and the first upper air guide plate 11, the second upper air guide plate 12, the first lower air guide plate 91 and the second lower air guide plate 92 are all opened.

[0073] In the above example, the first upward air outlet state of the indoor unit is the simultaneous upward air outlet state of both left and right sides. At this time, the first filter screen 21 and the third filter screen 22 are both moved away to reduce the air supply resistance. At the same time, the second filter screen 81 and the fourth filter screen 82 are both moved to the corresponding air outlets to filter the incoming air. At this time, the first axial flow fan 51 and the second axial flow fan 52 are both rotating forward, which can realize upward air outlet in both the left and right zones of the indoor unit. This can be applied to the cooling conditions where there are people on both the left and right sides of the indoor unit.

[0074] In some implementations, the indoor unit has a second upward air outlet state, such as... Figure 3b As shown, in the second upward air outlet state, the first axial flow fan 51 rotates forward, the second axial flow fan 52 is closed, the first filter screen 21 is moved away from the first upward air outlet 101a, the second filter screen 81 moves to the first downward air outlet 102a, the first upper air guide plate 11 and the first lower air guide plate 91 are both opened, and the second upper air guide plate 12 and the second lower air guide plate 92 are both closed.

[0075] In the example above, the second upward air outlet state of the indoor unit is the left zone independent upward air outlet state. At this time, only the first axial flow fan 51 rotates forward, which can realize the left zone independent upward air outlet. This can be applied to the cooling condition where people are concentrated on the left side of the indoor unit.

[0076] In some implementations, the indoor unit has a third upward air outlet state, such as... Figure 3c As shown, in the third upward air outlet state, the first axial flow fan 51 is closed, the second axial flow fan 52 is turned on, the third filter screen 22 is moved away from the second upward air outlet 101b, the fourth filter screen 82 moves to the second downward air outlet 102b, the first upper air guide plate 11 and the first lower air guide plate 91 are both closed, and the second upper air guide plate 12 and the second lower air guide plate 92 are both open.

[0077] In the example above, the third upward air outlet state of the indoor unit is the right zone independent upward air outlet state. At this time, only the second axial flow fan 52 rotates forward, which can realize the right zone independent upward air outlet. This can be applied to the cooling condition where people are concentrated on the right side of the indoor unit.

[0078] In some implementations, the indoor unit has a first downward air outlet state, such as... Figure 4a As shown, in the first downward air outlet state, the first axial flow fan 51 and the second axial flow fan 52 both reverse, the first filter screen 21 moves to the first upper air outlet 101a, the second filter screen 81 moves away from the first lower air outlet 102a, the third filter screen 22 moves to the second upper air outlet 101b, the fourth filter screen 82 moves away from the second lower air outlet 102b, and the first upper air guide plate 11, the second upper air guide plate 12, the first lower air guide plate 91 and the second lower air guide plate 92 all open.

[0079] In the example above, the first downward air outlet state of the indoor unit is the simultaneous downward air outlet state on both the left and right sides. At this time, the first axial flow fan 51 and the second axial flow fan 52 are both reversed, which can realize downward air outlet in both the left and right zones of the indoor unit. This can be applied to heating conditions where there are people on both the left and right sides of the indoor unit.

[0080] In some implementations, the indoor unit has a second downward air outlet state, such as... Figure 4b As shown, in the second downward air outlet state, the first axial flow fan 51 reverses, the second axial flow fan 52 is turned off, the first filter screen 21 moves to the first upper air outlet 101a, the second filter screen 81 moves away from the first lower air outlet 102a, the first upper air guide plate 11 and the first lower air guide plate 91 are both opened, and the second upper air guide plate 12 and the second lower air guide plate 92 are both closed.

[0081] In the example above, the second downward air outlet state of the indoor unit is the left zone independent downward air outlet state. At this time, only the first axial flow fan 51 reverses, which can realize the left zone independent downward air outlet. This can be applied to the heating condition where people are concentrated on the left side of the indoor unit.

[0082] In some implementations, the indoor unit has a third downward air outlet state, such as... Figure 4c As shown, in the third downward air outlet state, the first axial flow fan 51 is closed, the second axial flow fan 52 is reversed, the third filter screen 22 moves to the second upper air outlet 101b, the fourth filter screen 82 is moved away from the second lower air outlet 102b, the first upper air guide plate 11 and the first lower air guide plate 91 are both closed, and the second upper air guide plate 12 and the second lower air guide plate 92 are both open.

[0083] In the example above, the third downward air outlet state of the indoor unit is the right zone independent downward air outlet state. At this time, only the second axial flow fan 52 reverses, which can realize the right zone independent downward air outlet. This can be applied to the heating condition where people are concentrated on the right side of the indoor unit.

[0084] In some embodiments, the aforementioned indoor unit may further include an indoor sensing module for sensing the position of people in the room, so as to facilitate the control of the left and right zone air supply of the indoor unit.

[0085] The indoor sensing module can be an infrared sensor or other types of sensors. It uses thermal imaging to determine the location of people's activities and then controls the left and right zonal air supply through the motherboard program.

[0086] In some implementations, such as Figure 2As shown, there are two indoor sensing modules, namely a first sensing module 121 and a second sensing module. Both the first sensing module 121 and the second sensing module are used to sense the positions of people in different areas of the indoor unit. Specifically, the first sensing module 121 can be a left sensing module to sense the position of people on the left side of the indoor unit. The second sensing module can be a right sensing module to sense the position of people on the right side of the indoor unit.

[0087] In some embodiments, the speed of the aforementioned axial flow fan 5 is adjustable to facilitate high-speed, medium-speed, or low-speed airflow according to different operating conditions.

[0088] In some implementations, the aforementioned indoor unit can be a wall-mounted unit.

[0089] In some embodiments, the present invention also provides an air conditioner that may include the indoor unit of any of the above-mentioned components.

[0090] For ease of understanding, the overall structure of this utility model will be described below, and its working principle will be explained.

[0091] like Figures 1-2 The diagram shows a right-side sectional view and a front sectional view of the indoor unit of this utility model, revealing the arrangement of the internal components. Both the upper and lower air outlets have corresponding filters. The indoor unit has two axial flow fans 5, each with an axial flow fan blade 501, a guide ring 502, and a motor 503. The motors 503 of both axial flow fans 5 can be fixed to motor brackets 504. The aforementioned heat exchanger 3 is Z-shaped, comprising a first heat exchange section 31, a second heat exchange section 32, and a third heat exchange section 33 connected sequentially. The first heat exchange section 31 is perpendicular to the axis of the first axial flow fan 51 and is located above it. The third heat exchange section 33 is perpendicular to the axis of the second axial flow fan 52 and is located below it. The axes of the first axial flow fan 51 and the second axial flow fan 52 are parallel.

[0092] like Figure 1 As shown, the indoor unit of this utility model is divided into left and right sections. The left section is composed of the first axial flow fan 51, the first filter 21, the first upper air guide plate 11, the second filter 81, and the first lower air guide plate 91. The right section is composed of the second axial flow fan 52, the third filter 22, the second upper air guide plate 12, the fourth filter 82, and the second lower air guide plate 92.

[0093] The aforementioned first upper air guide plate 11 and second upper air guide plate 12 can each be two or more, for example, three each. If only the first upper air guide plate 11 and second upper air guide plate 12 are single, the upper air guide plate will be too long and hit the ceiling.

[0094] The number of both the aforementioned first lower air guide plate 91 and the second lower air guide plate 92 can be more than two, for example, both can be two.

[0095] The speeds of both the first axial flow fan 51 and the second axial flow fan 52 are adjustable.

[0096] from Figures 3a-3c as well as Figures 4a-4c You can see the airflow status of the air conditioner under different operating conditions.

[0097] Refrigeration conditions

[0098] The fan speed (high or medium / low) is determined based on the indoor temperature difference within the cooling temperature range. When the indoor temperature difference exceeds the first set temperature difference, the indoor unit is controlled to operate in the first top-discharge mode, with both upper and lower air guides open. The first axial fan 51 and the second axial fan 52 both rotate forward, and the axial fan blade 501 reaches its maximum speed. Air is drawn in from the lower air outlet 102, passes through the lower filter, enters the air conditioner's internal channel, and is blown out from the upper air outlet 101. The airflow is guided by the upper air guide, preventing direct airflow. Simultaneously, the sweeping blades at the air outlets adjust their angle (not shown in this text) according to the target person's location to avoid direct airflow onto the body. The left and right air outlets can be adjusted separately according to different air delivery targets. Specifically, by using infrared or other sensing modules to obtain the person's exact location, a program can be added to the main board to direct the sweeping blades away from the person, thus achieving left and right zoned air delivery. This allows the indoor unit to operate in the second or third top-discharge mode, improving indoor air circulation efficiency.

[0099] When the indoor temperature difference is less than the second set temperature difference, the fan speed is controlled at medium / low speed. The indoor sensor module (which can be an infrared sensor or another method) determines the location of the target person based on this speed. The specific location of the person is determined through thermal imaging, and the mainboard program controls the movement of the air-sweeping blades to open the nearest air supply zone and close the other air supply zone. If the left air supply zone is opened, both the first upper air guide plate 11 and the first lower air guide plate 91 on the left side open, and the first axial fan 51 rotates clockwise. If the right air supply zone is opened, both the upper left air guide plate and the lower left air guide plate open, and the first axial fan blade 501 rotates clockwise. The air-sweeping blades of each zone adjust the air supply angle according to the air supply target. To save energy, there is no zoned air supply function at medium and low speeds.

[0100] Heating mode

[0101] The fan speed is adjusted to high or medium / low based on the heating temperature difference range. When the indoor temperature difference is greater than the first set temperature difference, the indoor unit is controlled to be in the first lower air outlet state. The first axial fan 51 and the second axial fan 52 both reverse, and the upper and lower air guides are driven to the open state. The airflow enters the internal channel of the air conditioner after passing through the first filter 21 and the third filter 22 at the top. At the same time, under the guidance of the lower air guide, the effect of warm air reaching the ground can be achieved. When the indoor temperature difference is less than the second set temperature difference, the fan speed is controlled to medium / low. Similar to the cooling mode, the location of the target person is determined by the sensing module, and the air guide of the closer air supply zone is opened, while the air supply zone on the other side is closed. The axial fan blades 501 of the air supply zone are also opened, so that the indoor unit is in the second or third lower air outlet state.

[0102] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0103] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An indoor unit, characterized by: Includes a housing (1) and an axial flow fan (5) disposed within the housing (1). The housing (1) has an upper air inlet (101) and a lower air inlet (102). The upper air inlet (101) is located on one axial side of the axial flow fan (5), and the lower air inlet (102) is located on the other axial side of the axial flow fan (5). The axial flow fan (5) is a reversible axial flow fan, and the indoor unit has an upper air outlet state and a lower air outlet state; wherein, in the upper air outlet state, the axial flow fan (5) rotates forward to drive airflow to enter from the lower air outlet (102) and exit from the upper air outlet (101); in the lower air outlet state, the axial flow fan (5) rotates in reverse to drive airflow to enter from the upper air outlet (101) and exit from the lower air outlet (102).

2. The indoor unit of claim 1, characterized in that: The upwind outlet (101) includes a first upwind outlet (101a) and a second upwind outlet (101b), the downwind outlet (102) includes a first downwind outlet (102a) and a second downwind outlet (102b), and the axial flow fan (5) includes a first axial flow fan (51) and a second axial flow fan (52). The first axial flow fan (51) and the second axial flow fan (52) are arranged at intervals. The first upper air outlet (101a) is located on one side of the axial direction of the first axial flow fan (51), and the first lower air outlet (102a) is located on the other side of the axial direction of the first axial flow fan (51). The second upper air outlet (101b) is located on one side of the axial direction of the second axial flow fan (52), and the second lower air outlet (102b) is located on the other side of the axial direction of the second axial flow fan (52). Both the first axial flow fan (51) and the second axial flow fan (52) can be turned on or off independently.

3. The indoor unit of claim 2, characterized in that: It also includes a heat exchanger (3), which has a first heat exchange section (31), a second heat exchange section (32) and a third heat exchange section (33) connected in sequence. The first heat exchange section (31) is located between the first upper air outlet (101a) and the first axial flow fan (51). The second heat exchange section (32) separates the first axial flow fan (51) and the second axial flow fan (52). The third heat exchange section (33) is located between the second lower air outlet (102b) and the second axial flow fan (52).

4. The indoor unit according to claim 3, characterized in that: One end of the heat exchanger (3) is bent to form the first heat exchange section (31), and the other end of the heat exchanger (3) is bent to form the third heat exchange section (33). The portion of the heat exchanger (3) between the first heat exchange section (31) and the third heat exchange section (33) forms the second heat exchange section (32). The first heat exchange section (31), the second heat exchange section (32), and the third heat exchange section (33) form a Z-shaped structure.

5. The indoor unit according to any one of claims 2-4, characterized in that: The first upper air inlet (101a) is provided with an openable and closable first upper air guide plate (11), the second upper air inlet (101b) is provided with an openable and closable second upper air guide plate (12), the first lower air inlet (102a) is provided with an openable and closable first lower air guide plate (91), and the second lower air inlet (102b) is provided with an openable and closable second lower air guide plate (92).

6. The indoor unit according to any one of claims 2-4, characterized by: It also includes a first filter (21), a second filter (81), a third filter (22), and a fourth filter (82); The first filter (21) is movable to the first upwind vent (101a) or to be moved away from the first upwind vent (101a); the second filter (81) is movable to the first downwind vent (102a) or to be moved away from the first downwind vent (102a); the third filter (22) is movable to the second upwind vent (101b) or to be moved away from the first upwind vent (101a); and the fourth filter (82) is movable to the second downwind vent (102b) or to be moved away from the second downwind vent (102b).

7. The indoor unit of claim 6, characterized in that: The housing (1) is provided with a filter storage box (10); wherein, The housing (1) is also provided with a first track, which is used to guide the movement of the first filter (21) to the first air inlet (101a) or to the filter storage box (10) so that the first filter (21) can be moved away from the first air inlet (101a). And / or, the housing (1) is further provided with a second track, which is used to guide the movement of the second filter (81) to the first downwind port (102a), or to the filter storage box (10) so that the second filter (81) can be moved away from the first downwind port (102a); And / or, the housing (1) is further provided with a third track, which is used to guide the movement of the third filter (22) to guide the third filter (22) to the second air inlet (101b), or to guide the third filter (22) into the filter storage box (10), so that the third filter (22) is moved away from the second air inlet (101b); And / or, the housing (1) is further provided with a fourth track, which is used to guide the movement of the fourth filter (82) to the second downdraft (102b) or to the filter storage box (10) so that the fourth filter (82) is moved away from the second downdraft (102b).

8. The indoor unit according to claim 6, characterized in that: When the first upper air inlet (101a) is provided with an openable and closable first upper air guide plate (11), and the second upper air inlet (101b) is provided with an openable and closable second upper air guide plate (12), the first lower air inlet (102a) is provided with an openable and closable first lower air guide plate (91), and the second lower air inlet (102b) is provided with an openable and closable second lower air guide plate (92), The indoor unit has a first upward air outlet state. In the first upward air outlet state, the first axial fan (51) and the second axial fan (52) both rotate forward. The first filter (21) moves away from the first upward air outlet (101a), the second filter (81) moves to the first downward air outlet (102a), the third filter (22) moves away from the second upward air outlet (101b), the fourth filter (82) moves to the second downward air outlet (102b), and the first upper air guide plate (11), the second upper air guide plate (12), the first lower air guide plate (91), and the second lower air guide plate (92) are all open. And / or, the indoor unit has a second upward air outlet state, in which the first axial fan (51) rotates forward, the second axial fan (52) is closed, the first filter (21) is moved away from the first upward air outlet (101a), the second filter (81) moves to the first downward air outlet (102a), the first upper air guide plate (11) and the first lower air guide plate (91) are both open, and the second upper air guide plate (12) and the second lower air guide plate (92) are both closed; And / or, the indoor unit has a third upward air outlet state, in which the first axial fan (51) is closed, the second axial fan (52) is open, the third filter (22) is moved away from the second upward air outlet (101b), the fourth filter (82) is moved to the second downward air outlet (102b), the first upper air guide plate (11) and the first lower air guide plate (91) are both closed, and the second upper air guide plate (12) and the second lower air guide plate (92) are both open; And / or, the indoor unit has a first downward air outlet state, in which the first axial fan (51) and the second axial fan (52) are reversed, the first filter (21) moves to the first upper air outlet (101a), the second filter (81) moves away from the first lower air outlet (102a), the third filter (22) moves to the second upper air outlet (101b), the fourth filter (82) moves away from the second lower air outlet (102b), and the first upper air guide plate (11), the second upper air guide plate (12), the first lower air guide plate (91) and the second lower air guide plate (92) are all opened; And / or, the indoor unit has a second downward air outlet state, in which the first axial fan (51) reverses, the second axial fan (52) is closed, the first filter (21) moves to the first upper air outlet (101a), the second filter (81) moves away from the first lower air outlet (102a), the first upper air guide plate (11) and the first lower air guide plate (91) are both opened, and the second upper air guide plate (12) and the second lower air guide plate (92) are both closed; And / or, the indoor unit has a third downward air outlet state, in which the first axial fan (51) is closed, the second axial fan (52) is reversed, the third filter (22) is moved to the second upper air outlet (101b), the fourth filter (82) is moved away from the second lower air outlet (102b), the first upper air guide plate (11) and the first lower air guide plate (91) are both closed, and the second upper air guide plate (12) and the second lower air guide plate (92) are both open.

9. The indoor unit of any one of claims 1-4, 7-8, wherein: The indoor unit also includes an indoor sensing module, which is used to sense the location of people in the room. And / or, the rotational speed of the axial flow fan (5) is adjustable.

10. An air conditioner characterized by comprising: The indoor unit includes any one of claims 1-9.

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