A volute assembly, air conditioner and control method

Abstract

This invention provides a volute assembly, an air conditioner, and a control method. The volute assembly includes a volute. The volute has a circumferential sidewall facing the side of a cross-flow fan blade. A first air outlet and a second air outlet are provided on the circumferential sidewall. Along the circumferential direction of the circumferential sidewall, a first wall surface is formed between one side of the first air outlet and the second air outlet, and a second wall surface is formed between the other sides. The first wall surface faces one side of the cross-flow fan blade, forming a first air duct between them. The second wall surface faces the other side of the cross-flow fan blade, forming a second air duct between them. Both the first and second air ducts can be opened or closed. The air conditioner of this invention has both an upward air outlet mode and a downward air outlet mode, allowing users to select the appropriate air outlet mode according to actual conditions to achieve a cooling / heating effect where cold air does not blow directly on the user and hot air warms the body, thereby improving the comfort of the air conditioner's airflow.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to a volute assembly, an air conditioner, and a control method. Background Technology

[0002] Currently, users have different requirements for airflow in cooling and heating modes. For cooling in warmer environments: In dynamic environments, the head, back, chest, and calves are more sensitive to cold stimulation. Therefore, when the air conditioner is turned on, using cool air to provide localized cooling stimulation to these areas makes users feel more comfortable. In a steady-state environment, direct cold air blowing on the user causes discomfort and can lead to mental distraction and reduced work focus. Prolonged exposure to direct cold air can easily induce various illnesses; therefore, users do not want cold air blowing directly on their bodies. For heating in cooler environments: In dynamic environments, the head, thighs, calves, and hands are more sensitive to heat stimulation. Using warm air to provide localized heat stimulation to these areas makes users feel more comfortable. In a steady-state environment, because hot air rises, there is a clear temperature stratification in the room, with most heat accumulating in the upper part of the room, leaving the user's feet, which need warmth most, unwarmed.

[0003] In summary, traditional air conditioners have a relatively simple airflow pattern, maintaining the same airflow direction whether cooling or heating. The only change is adjusting the airflow direction by adjusting the sweeping or guide vanes. However, due to the natural properties of air, hot air is less dense and tends to rise, while cold air is denser and tends to sink. Therefore, existing air conditioners consistently present comfort issues during operation, such as "hot head, cold feet" when heating and "cold air blowing on you" when cooling. Summary of the Invention

[0004] Therefore, the present invention provides a volute assembly, an air conditioner, and a control method, the main technical problem to be solved being: how to improve the airflow comfort of the air conditioner.

[0005] To address the aforementioned problems, the present invention provides a volute assembly comprising a volute for accommodating a cross-flow fan blade; the volute having a circumferential sidewall opposite to the side of the cross-flow fan blade, the circumferential sidewall having a first air inlet and a second air inlet; in the circumferential direction along the circumferential sidewall, the circumferential sidewall forms a first wall surface between one side of the first air inlet and the second air inlet, and a second wall surface between the other sides of the two; the first wall surface is opposite to one side of the cross-flow fan blade, and forms a first air duct between the two; the second wall surface is opposite to the other side of the cross-flow fan blade, and forms a second air duct between the two;

[0006] Both the first and second air ducts can be opened or closed, so that when the first air duct is open and the second air duct is closed, the cross-flow fan blades can drive the airflow to enter from the first air outlet and exit from the second air outlet; and when the first air duct is closed and the second air duct is open, the cross-flow fan blades can drive the airflow to enter from the second air outlet and exit from the first air outlet.

[0007] In some embodiments, the volute assembly further includes a first damper, through which the first air duct is opened or closed.

[0008] In some embodiments, the first damper is rotatably disposed on the first wall side of the volute, and the first damper opens or closes the first air duct by rotation;

[0009] And / or, when the first damper closes the first air duct, the first damper is used to engage with the cross-flow fan blades with a clearance.

[0010] In some embodiments, the volute assembly further includes a second damper, through which the second air duct is opened or closed.

[0011] In some embodiments, the second damper is rotatably disposed on the second wall side of the volute, and the second damper opens or closes the second air duct by rotation;

[0012] And / or, when the second damper closes the second air duct, the second damper is used to engage with the cross-flow fan blades with a clearance.

[0013] The present invention also provides an air conditioner comprising the volute assembly described in any one of the above-described embodiments.

[0014] In some implementations, the volute assembly is in a first state when the first air duct is open and the second air duct is closed; and in a second state when the first air duct is closed and the second air duct is open.

[0015] The cross-flow fan blades rotate in the same direction in both the first and second states.

[0016] In some embodiments, the air conditioner includes a housing, the volute assembly is disposed within the housing, and the first air vent is located above the second air vent;

[0017] The casing is provided with an upper air vent and a lower air vent. The upper air vent is connected to the first air vent, and the lower air vent is connected to the second air vent. The upper air vent is provided with an openable and closable first air guide plate, and the lower air vent is provided with an openable and closable second air guide plate.

[0018] In some embodiments, the lower side of the second wall surface has a volute tongue, the volute tongue is opposite to the first wall surface and an air duct is formed between the two, the air duct having the second air outlet;

[0019] The downwind vent includes a first sub-vent and a second sub-vent. The second sub-vent is close to the first wall surface relative to the first sub-vent. The second air guide plate includes a second a air guide plate and a second b air guide plate. The second air guide plate opens and closes the first sub-vent through the second a air guide plate and the second sub-vent through the second b air guide plate. When closed, the second b air guide plate can contact the lower side of the first wall surface to guide the air outlet of the duct to the first sub-vent.

[0020] In some embodiments, the control method includes a cooling top-discharge mode control method for an air conditioner, wherein in the cooling top-discharge mode, the first air duct is closed, the second air duct is open, and the cross-flow fan blades drive airflow to enter from the second air outlet and exit from the first air outlet; the cooling top-discharge mode control method includes: determining the indoor temperature T. 内 -Set temperature T 设 If the airflow is greater than the first preset value T1, then control the first air guide plate, the second a air guide plate, and the second b air guide plate to open at the first preset maximum airflow state, and control the air conditioner to run for a first preset time under the current state of the first air guide plate, the second a air guide plate, and the second b air guide plate, and then determine the indoor temperature T again. 内 -Set temperature T 设 Is it greater than the first preset value T1? If not, control the second a air guide plate and the second b air guide plate to open with the first preset maximum air volume, and control the first air guide plate to open with the first preset angle, which is less than the angle when the first air guide plate is opened with the first preset maximum air volume.

[0021] And / or, the control method includes a cooling down-air outlet mode control method for an air conditioner, wherein in the cooling down-air outlet mode, the first air duct is open, the second air duct is closed, and the cross-flow fan blades drive airflow to enter from the first air outlet and exit from the second air outlet; the cooling down-air outlet mode control method includes: controlling the first air guide plate and the second a air guide plate to open at a second preset maximum airflow state, and controlling the second b air guide plate to close;

[0022] And / or, the control method includes an intelligent cooling mode control method for an air conditioner, wherein in the intelligent cooling mode, the first air duct is closed, the second air duct is open, and the cross-flow fan blades drive airflow to enter from the second air vent and exit from the first air vent; the intelligent cooling mode control method includes: determining the indoor temperature T. 内 -Set temperature T设 If the airflow is greater than the first preset value T1, then control the first air guide plate, the second a air guide plate, and the second b air guide plate to all open at the first preset maximum airflow state, and control the air conditioner to run for a second preset time under the current state of the first air guide plate, the second a air guide plate, and the second b air guide plate to determine the indoor temperature T again. 内 -Set temperature T 设 Is it greater than the first preset value T1? If not, then control both the second a-direction air deflector and the second b-direction air deflector to open at the first preset maximum airflow, and control the first air deflector to open at the first preset angle, which is less than the angle when the first air deflector is opened at the preset maximum airflow. If not, and the indoor temperature T 内 -Set temperature T 设 If the temperature is ≤ the second preset value T2, the speed of the cross-flow fan blades is reduced by one level, and the compressor frequency of the air conditioner is reduced by the first preset value n. The air conditioner is then controlled to run at the current cross-flow fan blade speed and compressor frequency for a third preset time before the indoor temperature T is determined again. 内 -Set temperature T 设 Is the temperature greater than the first preset value T1? If not, and the second preset value T2 < indoor temperature T 内 -Set temperature T 设 If the first preset value T1 is not met, the air conditioner is controlled to operate under the current state of the first air guide plate, the second a air guide plate, and the second b air guide plate. The indoor temperature T is then determined again after a fourth preset time. 内 -Set temperature T 设 Is it greater than the first preset value T1?

[0023] And / or, the control method includes a heating top-outlet airflow mode control method for an air conditioner, wherein in the heating top-outlet airflow mode, the first air duct is closed, the second air duct is open, and the cross-flow fan blades drive airflow to enter from the second air outlet and exit from the first air outlet; the heating top-outlet airflow mode control method includes: determining the set temperature T 设 -Indoor temperature T 内 If the first preset value T1' is true, then control the first air guide plate, the second a air guide plate, and the second b air guide plate to all open at the first preset maximum airflow state, and control the air conditioner to run for the first preset time under the current state of the first air guide plate, the second a air guide plate, and the second b air guide plate to re-determine the set temperature T. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'? If not, control the second a air guide plate and the second b air guide plate to open with the first preset maximum air volume, and control the first air guide plate to open with the first preset angle, which is less than the angle when the first air guide plate is opened with the preset maximum air volume.

[0024] And / or, the control method includes a heating-down air outlet mode control method for an air conditioner, wherein in the heating-down air outlet mode, the first air duct is open, the second air duct is closed, and the cross-flow fan blades drive airflow to enter from the first air outlet and exit from the second air outlet; the heating-down air outlet mode control method includes: controlling the first air guide plate and the second a air guide plate to open at a second preset maximum airflow state, and controlling the second b air guide plate to close;

[0025] And / or, the control method includes an intelligent heating mode control method for an air conditioner, wherein in the intelligent heating mode, the first air duct is open, the second air duct is closed, and the cross-flow fan blades drive airflow to enter from the first air outlet and exit from the second air outlet; the intelligent heating mode control method includes: controlling the second b-shaped air guide plate to remain closed; and determining the set temperature T. 设 -Indoor temperature T 内 If the set temperature T is greater than the first preset value T1', then control both the first air guide plate and the second air guide plate a to open at the second preset maximum airflow. Also, control the air conditioner to run for the second preset time while the first air guide plate, the second air guide plate a, and the second air guide plate b are in their current states, and then re-evaluate the set temperature T. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'? If not, control the first air guide plate to open at the preset maximum airflow state, and control the second air guide plate to open at the second preset angle, which is less than the angle when the second air guide plate is opened at the preset maximum airflow state; if not, and set the temperature T 设 -Indoor temperature T 内 If the set temperature T is ≤ the second preset value T2', the speed of the cross-flow fan blades is reduced by one level, and the compressor frequency of the air conditioner is reduced by the second preset value n'. The air conditioner is then controlled to run at the current cross-flow fan blade speed and compressor frequency for a third preset time to re-determine the set temperature T. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'? If not, and the second preset value T2' is less than the set temperature T? 设 -Indoor temperature T 内 ≤First a preset value T1', and also control the air conditioner to run under the current state of the first air guide plate, the second a air guide plate and the second b air guide plate for a fourth a preset time to judge the set temperature T again. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'?

[0026] The volute assembly, air conditioner, and control method provided by this invention have the following beneficial effects:

[0027] 1. Compared with the single downward air outlet mode in the prior art, the air conditioner of the present invention has both upward and downward air outlet modes, so users can select the appropriate air outlet mode according to the actual situation to achieve the cooling and heating effect of cold air not blowing on people and hot air warming the whole body, thereby improving the comfort of the air outlet of the air conditioner.

[0028] 2. The control method of the present invention can achieve the cooling and heating effect of cold air not blowing on people and hot air warming the whole body, thereby improving the air supply comfort of the air conditioner. Attached Figure Description

[0029] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the air guide vanes of the air conditioner of the present invention when they are closed;

[0031] Figure 2 This is a schematic diagram of the air conditioner of the present invention when the air is being discharged from the top.

[0032] Figure 3 This is a schematic diagram of the air conditioner of the present invention when the air is discharging downwards;

[0033] Figure 4 This is a control flowchart of the cooling mode of the air conditioner of the present invention;

[0034] Figure 5 This is a control flowchart of the heating mode of the air conditioner of the present invention.

[0035] The attached figures are labeled as follows:

[0036] 1. Volute; 2. Cross-flow fan blade; 3. Housing; 4. First air guide plate; 5. Second air guide plate; 6. First air damper; 7. Second air damper; 11. First wall surface; 12. Second wall surface; 51. Second a air guide plate; 52. Second b air guide plate; 101. First air outlet; 102. Second air outlet; 111. First air duct; 120. Air duct; 121. Second air duct; 122. Volute tongue; 301. Upper air outlet; 302. Lower air outlet; 302a. First sub-air outlet; 302b. Second sub-air outlet. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, 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 invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention 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 invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0039] 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.

[0040] 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 should not be construed as limiting the scope of protection of this invention.

[0041] See also Figure 1-3As shown, according to an embodiment of the present invention, a volute assembly is provided, comprising a volute 1 for accommodating a cross-flow fan blade 2. The volute 1 has a circumferential sidewall facing the side of the cross-flow fan blade 2. A first air inlet 101 and a second air inlet 102 are provided on the circumferential sidewall. In the circumferential direction along the circumferential sidewall, a first wall surface 11 is formed between one side of the first air inlet 101 and the second air inlet 102, and a second wall surface 12 is formed between the other side of the first air inlet 101 and the second air inlet 102. The first wall surface 11 faces one side of the cross-flow fan blade 2 and forms a first air duct 111 between them. The second wall surface 12 faces the other side of the cross-flow fan blade 2 and forms a second air duct 121 between them.

[0042] The first air duct 111 and the second air duct 121 can be opened or closed, so that when the first air duct 111 is open and the second air duct 121 is closed, the cross-flow fan 2 can drive the airflow to enter from the first air outlet 101 and exit from the second air outlet 102; and when the first air duct 111 is closed and the second air duct 121 is open, the cross-flow fan 2 can drive the airflow to enter from the second air outlet 102 and exit from the first air outlet 101.

[0043] It should be noted that the aforementioned cross-flow fan blade 2 can also be referred to as a cross-flow fan wheel in some situations.

[0044] In a specific application example, such as Figure 1-3 As shown, the first air vent 101 can be an upper air vent, and the second air vent 102 is a lower air vent. When the volute assembly is applied to an air conditioner, the air conditioner casing 3 can be provided with an upper air vent 301 and a lower air vent 302. The upper air vent 301 is connected to the first air vent 101, and the lower air vent 302 is connected to the second air vent 102. Thus, when the first air duct 111 is open and the second air duct 121 is closed, and the cross-flow fan 2 drives the airflow to enter through the first air vent 101 and exit through the second air vent 102, the first air vent 101 receives air through the upper air vent 301, and the second air vent 102 exits air through the lower air vent 302, at which point the air conditioner is in a downward air outlet mode. When the first air duct 111 is closed and the second air duct 121 is open, and the cross-flow fan blade 2 drives the airflow to enter from the second air outlet 102 and exit from the first air outlet 101, the first air outlet 101 exits through the upper air outlet 301, and the second air outlet 102 enters through the lower air outlet 302, the air conditioner is in the upper air outlet mode.

[0045] Compared to the single downward air outlet mode in the prior art, the air conditioner of the present invention has both upward and downward air outlet modes, so users can choose the appropriate air outlet mode according to the actual situation to achieve the cooling and heating effect of cold air not blowing on people and hot air warming the whole body, thereby improving the comfort of the air outlet of the air conditioner.

[0046] To achieve the effect of opening or closing the aforementioned first air duct 111, in some embodiments, such as Figure 1-3 As shown, the aforementioned volute assembly may further include a first damper 6, through which the first air duct 111 is opened or closed. In a specific application example, the first damper 6 is rotatably disposed on the first wall 11 side of the volute 1, and the first damper 6 opens or closes the first air duct 111 by rotation.

[0047] In some implementations, such as Figure 1-3 As shown, the aforementioned first damper 6 has a first a-end and a second a-end, which are rotatably mounted on the first wall surface 11 side of the volute 1 via the first a-end. When the first damper 6 rotates via the first a-end, the second a-end moves closer to or further away from the cross-flow fan 2. Specifically, when the first damper 6 opens the first air duct 111, the second a-end moves away from the cross-flow fan 2; when the first damper 6 closes the first air duct 111, the second a-end moves closer to the cross-flow fan 2. In a specific application example, the first a-end is the lower end of the first damper 6, and the second a-end is the upper end of the first damper 6. The first a-end has a first rotation shaft, through which it rotates. When the first damper 6 opens the first air duct 111, the second a-end of the first damper 6 rotates to its upper limit position, abutting against the first wall surface 11, at which point the position of the first rotation shaft is its initial position. When the first damper 6 closes the first air duct 111, the first rotating shaft rotates counterclockwise by a preset angle, such as 18 degrees, so that the second a end rotates to a position close to the lower limit of the cross-flow fan blade 2.

[0048] In some embodiments, when the first damper 6 closes the first air duct 111, the first damper 6 is used to engage with the cross-flow fan blade 2 with a clearance so as not to affect the normal rotation of the cross-flow fan blade 2.

[0049] To achieve the effect of opening or closing the aforementioned second air duct 121, in some embodiments, such as Figure 1-3 As shown, the aforementioned volute assembly also includes a second damper 7, through which the second air duct 121 is opened or closed. In a specific application example, the second damper 7 is rotatably disposed on the second wall 12 side of the volute 1, and the second damper 7 opens or closes the second air duct 121 by rotation.

[0050] In some embodiments, when the second damper 7 closes the second air duct 121, the second damper 7 is used to engage with the cross-flow fan blade 2 with a clearance so as not to affect the normal rotation of the cross-flow fan blade 2.

[0051] In some implementations, such as Figure 1-3As shown, the aforementioned second damper 7 has a first b-end and a second b-end, which are rotatably disposed on the second wall surface 12 side of the volute 1 via the first b-end. When the second damper 7 rotates via the first b-end, the second b-end moves relatively closer to or further away from the cross-flow fan 2. Specifically, when the second damper 7 opens the second air duct 121, the second b-end moves away from the cross-flow fan 2; when the second damper 7 closes the second air duct 121, the second b-end moves closer to the cross-flow fan 2. In a specific application example, the first b-end is the upper end of the second damper 7, and the second b-end is the lower end of the second damper 7. The first b-end has a second rotation shaft, through which the first b-end rotates. When the second damper 7 opens the second air duct 121, the second b-end of the second damper 7 rotates to the lower limit position abutting against the second wall surface 12, at which point the position of the second rotation shaft is the initial position. When the second damper 7 closes the second air duct 121, the second rotating shaft rotates counterclockwise by a preset angle, such as 18 degrees, so that the second b end rotates to the upper limit position close to the cross-flow fan blade 2.

[0052] The present invention also provides an air conditioner that may include the volute assembly described above. Because the air conditioner uses the aforementioned volute assembly, it simultaneously possesses both an upward airflow mode and a downward airflow mode, allowing users to select the appropriate airflow mode according to their actual needs. This achieves a cooling or heating effect where cold air does not blow directly on the user and hot air warms the entire body, thereby improving the comfort of the air conditioner's airflow.

[0053] In some embodiments, the volute assembly is in a first state when the first air duct 111 is open and the second air duct 121 is closed; and in a second state when the first air duct 111 is closed and the second air duct 121 is open. The cross-flow fan blade 2 rotates in the same direction in both the first and second states, for example, clockwise.

[0054] In the example above, the rotation direction of the cross-flow fan blade 2 remains consistent, making it easy to control.

[0055] In some implementations, such as Figure 1-3 As shown, the aforementioned air conditioner includes a housing 3, and the aforementioned volute assembly is disposed within the housing 3, with the first air vent 101 located above the second air vent 102. The housing 3 has an upper air vent 301 and a lower air vent 302, the upper air vent 301 communicating with the first air vent 101, and the lower air vent 302 communicating with the second air vent 102. The upper air vent 301 has an openable and closable first air guide plate 4, and the lower air vent 302 has an openable and closable second air guide plate 5.

[0056] In the above example, when the cross-flow fan 2 drives the airflow to enter through the first air vent 101 and exit through the second air vent 102, the first air vent 101 receives air through the upper air vent 301 of the air conditioner, and the second air vent 102 exits air through the lower air vent 302 of the air conditioner. At this time, the air conditioner is in the lower air outlet mode. When the cross-flow fan 2 drives the airflow to enter through the second air vent 102 and exit through the first air vent 101, the first air vent 101 exits air through the upper air vent 301 of the air conditioner, and the second air vent 102 receives air through the lower air vent 302 of the air conditioner. At this time, the air conditioner is in the upper air outlet mode.

[0057] In some embodiments, there may be two or more upwind vents 301, and the number of the first air guide plates 4 is equal to the number of upwind vents 301 and corresponds one-to-one. Each upwind vent 301 opens and closes through a corresponding first air guide plate 4.

[0058] In some implementations, such as Figure 1-3 As shown, the lower side of the aforementioned second wall surface 12 has a volute tongue 122, which is opposite to the first wall surface 11, and an air duct 120 is formed between them. The air duct 120 has the aforementioned second air outlet 102. The aforementioned lower air outlet 302 includes a first sub-air outlet 302a and a second sub-air outlet 302b, and the second sub-air outlet 302b is closer to the first wall surface 11 than the first sub-air outlet 302a. The second air guide plate 5 includes a second a air guide plate 51 and a second b air guide plate 52. The second air guide plate 5 opens and closes the first sub-air outlet 302a through the second a air guide plate 51, and opens and closes the second sub-air outlet 302b through the second b air guide plate 52. Wherein, when closed, the second b air guide plate 52 can contact the lower side of the first wall surface 11 to guide the air outlet of the air duct 120 to the first sub-air outlet 302a.

[0059] In the above example, when the second b air guide plate 52 is closed, it can be regarded as a supplement to the profile of the first wall surface 11 in the volute 1, which can maintain the stability of the downward air outlet and prevent surge phenomenon.

[0060] In some implementations, such as Figure 4-5 As shown, the present invention also provides a control method for any of the above-mentioned air conditioners.

[0061] The control method includes a cooling top-discharge mode control method for an air conditioner. In the cooling top-discharge mode, the first air duct 111 is closed, the second air duct 121 is open, and the cross-flow fan 2 drives the airflow to enter from the second air outlet 102 and exit from the first air outlet 101. The cooling top-discharge mode control method includes: determining the indoor temperature T. 内 -Set temperature T 设If the airflow is greater than the first preset value T1, then control the first air guide plate 4, the second a air guide plate 51, and the second b air guide plate 52 to all open at the first preset maximum airflow. Also, control the air conditioner to run for a first preset time under the current conditions of the first air guide plate 4, the second a air guide plate 51, and the second b air guide plate 52, and then re-determine the indoor temperature T. 内 -Set temperature T 设 Is it greater than the first preset value T1? If not, control the second a air guide plate 51 and the second b air guide plate 52 to open with the first preset maximum air volume, and control the first air guide plate 4 to open with the first preset angle, which is less than the angle when the first air guide plate 4 is opened with the preset maximum air volume.

[0062] In the example above, if the indoor temperature T 内 -Set temperature T 设 If the indoor temperature T is greater than the first preset value T1, it indicates that the indoor temperature T 内 If the temperature is too high, the first air guide plate 4, the second a air guide plate 51, and the second b air guide plate 52 will all be opened at the first preset maximum airflow setting, which will help to quickly cool the room. If the indoor temperature T 内 -Set temperature T 设 If the value is less than or equal to the first preset value T1, it indicates that the indoor temperature T 内 If the demand can be met, the opening angle of the first air guide plate 4 is reduced to decrease the amount of cold air and improve indoor comfort.

[0063] In a specific application example, the aforementioned first air guide plate 4, second a air guide plate 51, and second b air guide plate 52 all open within the range of 0 to 90°. The opening angle of the first air guide plate 4 under the first preset maximum airflow condition is 45°. The opening angle of the second a air guide plate 51 and the second b air guide plate 52 under the first preset maximum airflow condition is 90°. The aforementioned first preset time can be 5 minutes.

[0064] The control method includes a cooling-down air outlet mode control method for an air conditioner. In this cooling-down air outlet mode, the first air duct 111 is open, the second air duct 121 is closed, and the cross-flow fan 2 drives the airflow to enter from the first air outlet 101 and exit from the second air outlet 102. The cooling-down air outlet mode control method includes controlling the first air guide plate 4 and the second a air guide plate 51 to open at a second preset maximum airflow state, and controlling the second b air guide plate 52 to close.

[0065] In the example above, when the air conditioner is in cooling air outlet mode, surge can be prevented by controlling the closure of the second b air guide plate 52.

[0066] The control method includes an intelligent cooling mode control method for an air conditioner. In the intelligent cooling mode, the first air duct 111 is closed, the second air duct 121 is open, and the cross-flow fan 2 drives the airflow to enter from the second air outlet 102 and exit from the first air outlet 101. The intelligent cooling mode control method includes: determining the indoor temperature T. 内 -Set temperature T 设 If the airflow is greater than the first preset value T1, then control the first air guide plate 4, the second a air guide plate 51, and the second b air guide plate 52 to all open at the first preset maximum airflow. Also, control the air conditioner to run for a second preset time while the first air guide plate 4, the second a air guide plate 51, and the second b air guide plate 52 are in their current states, and then re-determine the indoor temperature T. 内 -Set temperature T 设 Is it greater than the first preset value T1? If not, then control the second a air guide plate 51 and the second b air guide plate 52 to open at the first preset maximum air volume, and control the first air guide plate 4 to open at the first preset angle, which is less than the angle when the first air guide plate 4 is opened at the preset maximum air volume; if not, and the indoor temperature T 内 -Set temperature T 设 If the temperature is ≤ the second preset value T2, the speed of the cross-flow fan blade 2 is reduced by one level, and the compressor frequency of the air conditioner is reduced by the first preset value n. The air conditioner is then controlled to run at the current speed of the cross-flow fan blade 2 and the compressor frequency for a third preset time to determine the indoor temperature T again. 内 -Set temperature T 设 Is the temperature greater than the first preset value T1? If not, and the second preset value T2 < indoor temperature T 内 -Set temperature T 设 If the value is less than or equal to the first preset value T1, the air conditioner is controlled to operate under the current state of the first air guide plate 4, the second a air guide plate 51, and the second b air guide plate 52 (at this time, the second a air guide plate 51 and the second b air guide plate 52 are both open at the first preset maximum air volume, and the first air guide plate 4 is open at the first preset angle) for a fourth preset time to determine the indoor temperature T again. 内 -Set temperature T 设 Is it greater than the first preset value T1?

[0067] In the example above, if the indoor temperature T 内 -Set temperature T 设 If the temperature is ≤ the second preset value T2, it means that the indoor temperature is too low. At this time, by reducing the speed of the cross-flow fan blade 2 and the frequency of the compressor, it is beneficial to reduce the amount of cold air and allow the indoor temperature to rise appropriately, so as to improve the comfort of the room.

[0068] In a specific application example, the second preset time can be 5 minutes. The third preset time can be 30 minutes. The fourth preset time can be 30 minutes.

[0069] The control method includes a heating top-outlet airflow mode control method for an air conditioner. In this mode, the first air duct 111 is closed, the second air duct 121 is open, and the cross-flow fan 2 drives airflow to enter through the second air outlet 102 and exit through the first air outlet 101. The heating top-outlet airflow mode control method includes: determining the set temperature T. 设 -Indoor temperature T 内 If the first preset value T1' is met, then the first air guide plate 4, the second air guide plate 51, and the second air guide plate 52 are all controlled to open at the first preset maximum airflow. The air conditioner is then controlled to run for the first preset time under the current conditions of the first air guide plate 4, the second air guide plate 51, and the second air guide plate 52, and the set temperature T is determined again. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'? If not, control the second a guide plate 51 and the second b guide plate 52 to open with the first preset maximum air volume, and control the first guide plate 4 to open with the first preset angle, which is less than the angle when the first guide plate 4 is opened with the preset maximum air volume.

[0070] In the example above, the temperature T is set. 设 -Indoor temperature T 内 If the first preset value T1' is set, it indicates that the indoor temperature is too low. In this case, opening the first air guide plate 4, the second air guide plate 51, and the second air guide plate 52 at the first preset maximum airflow will help to quickly raise the indoor temperature. If the set temperature T 设 -Indoor temperature T 内 If the value is less than or equal to the first preset value T1', it indicates that the indoor temperature T 内 If the demand can be met, the opening angle of the first air guide plate 4 is reduced to decrease the amount of hot air and improve indoor comfort.

[0071] It should be noted that: the first preset time 'a' mentioned above can be 5 minutes. The first preset value T1 mentioned above can be equal to the first preset value 'a' T1'. The first preset value T1 can be 1 to 2℃.

[0072] The control method includes a heating-down air outlet mode control method for an air conditioner. In the heating-down air outlet mode, the first air duct 111 is open, the second air duct 121 is closed, and the cross-flow fan 2 drives the airflow to enter from the first air outlet 101 and exit from the second air outlet 102. The heating-down air outlet mode control method includes controlling the first air guide plate 4 and the second a air guide plate 51 to open at a second preset maximum airflow state, and controlling the second b air guide plate 52 to close.

[0073] In the example above, when the air conditioner is in heating mode, the surge phenomenon can be prevented by controlling the closure of the second b air guide plate 52.

[0074] In a specific application example, both the first air guide plate 4 and the second air guide plate 5 open within the range of 0 to 90 degrees. The opening angle of the first air guide plate 4 is 90 degrees under the second preset maximum airflow condition. The opening angle of the second air guide plate 51 is also 90 degrees under the second preset maximum airflow condition. The aforementioned first preset time can be 5 minutes.

[0075] The control method includes an intelligent heating mode control method for an air conditioner. In the intelligent heating mode, the first air duct 111 is open, the second air duct 121 is closed, and the cross-flow fan 2 drives the airflow to enter from the first air outlet 101 and exit from the second air outlet 102. The intelligent heating mode control method includes: controlling the second b-shaped air guide plate 52 to remain closed; and determining the set temperature T. 设 -Indoor temperature T 内 If the set temperature T is greater than the first preset value T1', then control the first air guide plate 4 and the second air guide plate 51 to open at the second preset maximum air volume, and control the air conditioner to run for the second preset time under the current state of the first air guide plate 4, the second air guide plate 51, and the second air guide plate 52, and then re-determine the set temperature T. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'? If not, control the first air guide plate 4 to open at the preset maximum airflow state, and control the second air guide plate 51 to open at the second preset angle, which is less than the angle when the second air guide plate 51 is opened at the preset maximum airflow state; if not, and set the temperature T 设 -Indoor temperature T 内 If the second preset value T2' is not met, the speed of the cross-flow fan blade 2 is reduced by one level, and the compressor frequency of the air conditioner is reduced by the second preset value n'. The air conditioner is then controlled to run at the current speed of the cross-flow fan blade 2 and the compressor frequency for a third preset time to determine the set temperature T again. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'? If not, and the second preset value T2' is less than the set temperature T? 设 -Indoor temperature T 内 ≤First a preset value T1', and also control the air conditioner to run for a fourth a preset time under the current state of the first air guide plate 4, the second a air guide plate 51 and the second b air guide plate 52, and then judge the set temperature T again. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'?

[0076] In the example above, if the temperature T is set... 设 -Indoor temperature T内 If the value is less than or equal to the second preset value T2', it indicates that the indoor temperature is too high. In this case, reducing the speed of the cross-flow fan blade 2 and the compressor frequency will help reduce the amount of hot air and appropriately lower the indoor temperature to improve indoor comfort.

[0077] In a specific application example, the second preset time (a) mentioned above can be 5 minutes. The third preset time (a) can be 30 minutes. The fourth preset time (a) can be 30 minutes. The aforementioned second preset value T2 can be equal to the second preset value (a) T2'. The second preset value T2 can be 0 to 1℃.

[0078] The control methods described above can achieve a cooling and heating effect where cold air doesn't blow directly on people and hot air warms the whole body, thus improving the comfort of the air conditioner.

[0079] It should be noted that when there are two or more upwind vents 301, the number of first air guide plates 4 is equal to and corresponds one-to-one with the number of upwind vents 301. When each upwind vent 301 is opened and closed through its corresponding first air guide plate 4, the opening and closing states of each first air guide plate 4 are the same. When all first air guide plates 4 are open, the opening angle of each first air guide plate 4 is consistent, which has the advantage of convenient control.

[0080] In a specific application example, the aforementioned cooling top-discharge mode is the default cooling air outlet mode, the aforementioned cooling bottom-discharge mode is a user-selectable cooling air outlet mode, and the aforementioned intelligent cooling mode is an energy-saving cooling mode. Similarly, the aforementioned heating bottom-discharge mode is the default heating air outlet mode, the aforementioned heating top-discharge mode is a user-selectable heating air outlet mode, and the aforementioned intelligent heating mode is an energy-saving cooling mode.

[0081] 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.

[0082] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. 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 the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A volute assembly, characterized in that: The system includes a volute (1) for accommodating a cross-flow fan blade (2); the volute (1) has a circumferential sidewall facing the side of the cross-flow fan blade (2), the circumferential sidewall having a first air inlet (101) and a second air inlet (102); in the circumferential direction along the circumferential sidewall, the circumferential sidewall forms a first wall surface (11) between one side of the first air inlet (101) and the second air inlet (102), and a second wall surface (12) between the other side of the two; the first wall surface (11) faces one side of the cross-flow fan blade (2), and forms a first air duct (111) between the two; the second wall surface (12) faces the other side of the cross-flow fan blade (2), and forms a second air duct (121) between the two; Both the first air duct (111) and the second air duct (121) can be opened or closed, so that when the first air duct (111) is open and the second air duct (121) is closed, the cross-flow fan (2) can drive the airflow to enter from the first air outlet (101) and exit from the second air outlet (102); and when the first air duct (111) is closed and the second air duct (121) is open, the cross-flow fan (2) can drive the airflow to enter from the second air outlet (102) and exit from the first air outlet (101).

2. The volute assembly according to claim 1, characterized in that: It also includes a first damper (6), through which the first air duct (111) is opened or closed.

3. The volute assembly according to claim 2, characterized in that: The first damper (6) is rotatably disposed on the first wall (11) side of the volute (1), and the first damper (6) opens or closes the first air duct (111) by rotating; And / or, when the first damper (6) closes the first air duct (111), the first damper (6) is used to engage with the cross-flow fan blade (2) with clearance.

4. The volute assembly according to any one of claims 1-3, characterized in that: It also includes a second damper (7), through which the second air duct (121) is opened or closed.

5. The volute assembly according to claim 4, characterized in that: The second damper (7) is rotatably disposed on the second wall (12) side of the volute (1), and the second damper (7) opens or closes the second air duct (121) by rotation; And / or, when the second damper (7) closes the second air duct (121), the second damper (7) is used to engage with the cross-flow fan blade (2) with clearance.

6. An air conditioner, characterized in that: The volute assembly includes any one of claims 1-5.

7. The air conditioner according to claim 6, characterized in that: When the first air duct (111) is open and the second air duct (121) is closed, the volute assembly is in a first state; when the first air duct (111) is closed and the second air duct (121) is open, the volute assembly is in a second state. The cross-flow fan blade (2) rotates in the same direction in both the first and second states.

8. The air conditioner according to claim 6 or 7, characterized in that: Includes a housing (3), the volute assembly is disposed inside the housing (3), and the first air vent (101) is located above the second air vent (102); The housing (3) is provided with an upper air vent (301) and a lower air vent (302). The upper air vent (301) is connected to the first air vent (101), and the lower air vent (302) is connected to the second air vent (102). The upper air vent (301) is provided with an openable and closable first air guide plate (4), and the lower air vent (302) is provided with an openable and closable second air guide plate (5).

9. The air conditioner according to claim 8, characterized in that: The lower side of the second wall surface (12) has a volute tongue (122), which is opposite to the first wall surface (11) and forms an air duct (120) between them, which has the second air outlet (102). The downdraft (302) includes a first sub-vent (302a) and a second sub-vent (302b). The second sub-vent (302b) is closer to the first wall surface (11) than the first sub-vent (302a). The second air guide plate (5) includes a second a air guide plate (51) and a second b air guide plate (52). The second air guide plate (5) opens and closes the first sub-vent (302a) through the second a air guide plate (51) and opens and closes the second sub-vent (302b) through the second b air guide plate (52). When closed, the second b air guide plate (52) can contact the lower side of the first wall surface (11) to guide the air outlet of the air duct (120) to the first sub-vent (302a).

10. A control method for the air conditioner as described in claim 9, characterized in that: The control method includes a cooling top air outlet mode control method for an air conditioner. In the cooling top air outlet mode, the first air duct (111) is closed, the second air duct (121) is open, and the cross-flow fan (2) drives the airflow to enter from the second air outlet (102) and exit from the first air outlet (101). The cooling top-outlet air mode control method includes: determining the indoor temperature T. 内 -Set temperature T 设 If the airflow is greater than the first preset value T1, then control the first air guide plate (4), the second a air guide plate (51), and the second b air guide plate (52) to open at the first preset maximum airflow state, and control the air conditioner to run for a first preset time under the current state of the first air guide plate (4), the second a air guide plate (51), and the second b air guide plate (52) to judge the indoor temperature T again. 内 -Set temperature T 设 Is it greater than the first preset value T1? If not, control the second a guide plate (51) and the second b guide plate (52) to open with the first preset maximum air volume, and control the first guide plate (4) to open with the first preset angle. The first preset angle is less than the angle when the first guide plate (4) is opened with the first preset maximum air volume. And / or, the control method includes a cooling-down air outlet mode control method for an air conditioner, wherein in the cooling-down air outlet mode, the first air duct (111) is open, the second air duct (121) is closed, and the cross-flow fan (2) drives the airflow to enter from the first air outlet (101) and exit from the second air outlet (102); the cooling-down air outlet mode control method includes: controlling the first air guide plate (4) and the second a air guide plate (51) to open at a second preset maximum air volume state, and controlling the second b air guide plate (52) to close; And / or, the control method includes an intelligent cooling mode control method for an air conditioner, wherein in the intelligent cooling mode, the first air duct (111) is closed, the second air duct (121) is open, and the cross-flow fan (2) drives airflow to enter from the second air outlet (102) and exit from the first air outlet (101); the intelligent cooling mode control method includes: determining the indoor temperature T 内 -Set temperature T 设 If the airflow is greater than the first preset value T1, then control the first air guide plate (4), the second a air guide plate (51), and the second b air guide plate (52) to open at the first preset maximum airflow state, and control the air conditioner to run for a second preset time under the current state of the first air guide plate (4), the second a air guide plate (51), and the second b air guide plate (52) to judge the indoor temperature T again. 内 -Set temperature T 设 Is it greater than the first preset value T1? If not, then control the second a air guide plate (51) and the second b air guide plate (52) to open at the first preset maximum air volume, and control the first air guide plate (4) to open at the first preset angle, which is less than the angle when the first air guide plate (4) is opened at the preset maximum air volume; if not, and the indoor temperature T 内 -Set temperature T 设 If the value is less than or equal to the second preset value T2, the speed of the cross-flow fan blade (2) is reduced by one level, and the compressor frequency of the air conditioner is reduced by the first preset value n. The air conditioner is then controlled to run at the current speed of the cross-flow fan blade (2) and the compressor frequency for a third preset time to determine the indoor temperature T again. 内 -Set temperature T 设 Is the temperature greater than the first preset value T1? If not, and the second preset value T2 < indoor temperature T 内 -Set temperature T 设 If the first preset value T1 is not met, the air conditioner is controlled to run under the current state of the first air guide plate (4), the second a air guide plate (51), and the second b air guide plate (52) for a fourth preset time to determine the indoor temperature T again. 内 -Set temperature T 设 Is it greater than the first preset value T1? And / or, the control method includes a heating top-outlet airflow mode control method for an air conditioner, wherein in the heating top-outlet airflow mode, the first air duct (111) is closed, the second air duct (121) is open, and the cross-flow fan (2) drives airflow to enter from the second air outlet (102) and exit from the first air outlet (101); the heating top-outlet airflow mode control method includes: determining the set temperature T 设 -Indoor temperature T 内 If the first preset value T1' is true, then control the first air guide plate (4), the second air guide plate (51), and the second air guide plate (52) to open at the first preset maximum airflow state, and control the air conditioner to run for the first preset time under the current state of the first air guide plate (4), the second air guide plate (51), and the second air guide plate (52) to re-determine the set temperature T. 设 -Indoor temperature T 内 Is it greater than the first a preset value T1'? If not, control the second a guide plate (51) and the second b guide plate (52) to open in the first preset maximum air volume state, and control the first guide plate (4) to open in the first preset angle, which is less than the angle when the first guide plate (4) is opened in the preset maximum air volume state. And / or, the control method includes a heating-down air outlet mode control method for an air conditioner, wherein in the heating-down air outlet mode, the first air duct (111) is open, the second air duct (121) is closed, and the cross-flow fan (2) drives the airflow to enter from the first air outlet (101) and exit from the second air outlet (102); the heating-down air outlet mode control method includes: controlling the first air guide plate (4) and the second a air guide plate (51) to open at a second preset maximum air volume state, and controlling the second b air guide plate (52) to close; And / or, the control method includes an intelligent heating mode control method for an air conditioner, wherein in the intelligent heating mode, the first air duct (111) is open, the second air duct (121) is closed, and the cross-flow fan (2) drives airflow to enter from the first air outlet (101) and exit from the second air outlet (102); the intelligent heating mode control method includes: controlling the second b-guide plate (52) to remain closed; and determining the set temperature T. 设 -Indoor temperature T 内 If the set temperature T is greater than the first preset value T1', then control the first air guide plate (4) and the second air guide plate (51) to open at the second preset maximum air volume, and control the air conditioner to run for the second preset time under the current state of the first air guide plate (4), the second air guide plate (51) and the second air guide plate (52) to judge the set temperature T again. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'? If not, control the first air guide plate (4) to open at the preset maximum air volume, and control the second air guide plate (51) to open at the second preset angle, which is less than the angle when the second air guide plate (51) is opened at the preset maximum air volume. If not, and set the temperature T 设 -Indoor temperature T 内 If the second preset value T2' is ≤, the speed of the cross-flow fan (2) is reduced by one level, and the compressor frequency of the air conditioner is reduced by the second preset value n'. The air conditioner is then controlled to run at the current speed of the cross-flow fan (2) and compressor frequency for a third preset time to determine the set temperature T again. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'? If not, and the second preset value T2' is less than the set temperature T? 设 -Indoor temperature T 内 ≤ First a preset value T1', and also control the air conditioner to run under the current state of the first air guide plate (4), the second a air guide plate (51) and the second b air guide plate (52) for a fourth a preset time to judge the set temperature T again. 设 -Indoor temperature T 内 Is it greater than the first preset value T1'?

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