Indoor unit, air conditioner and air conditioning control method thereof

Abstract

The present invention discloses an indoor unit, comprising a casing, a fan and a heat exchanger arranged in the casing, wherein the heat exchanger is located at the rear side of the fan and its two ends extend toward the top and the bottom of the fan respectively. Compared with the prior art, the present invention arranges the heat exchanger at the rear side of the fan and its two ends extend toward the top and the bottom of the fan respectively, so that the space in the casing located in front of the fan is idle, which is convenient for reasonably arranging the upper air outlet and the lower air outlet. Therefore, the path for the wind discharged by the fan to reach the upper air outlet and the lower air outlet is relatively short, and the arrangement is more reasonable.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning structures, and in particular to an indoor unit, an air conditioner and an air conditioning control method. Background Art

[0002] In the prior art, the air outlet of the wall mounted unit is generally arranged at the lower front side of the wall mounted unit, and the air outlet direction of the wall mounted unit is adjusted by flipping the air guide plate up and down; but in fact, since the overall air outlet duct of the traditional wall mounted unit is downward, even when it is necessary to guide the cold air upward, using the air guide plate to guide the wind direction upward often tends to reduce the wind force, causing the wind force to weaken, and the effect of upward diffusion is not good. Therefore, there are certain differences in the uniformity of the overall room temperature, and there are certain limitations on the remote end or air supply distance.

[0003] In order to solve the above problems, a patent application document with application number CN202110345025.5 discloses an indoor unit, including a main frame, the main frame including an upper air outlet and a lower air outlet, and a movable panel can be movably provided on the front side of the main frame. When the indoor unit is in working state, along the line of sight from the movable panel to the lower air outlet, the movable panel completely blocks the lower air outlet.

[0004] However, the heat exchanger in the above-mentioned indoor unit is placed in the main frame and the heat exchanger is located above the fan and extends to the front side of the fan, resulting in the air guide duct of the upper air outlet extending from the bottom side of the main frame to the upper front side thereof. The air guide duct of the upper air outlet is relatively long and its layout is not very reasonable. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an indoor unit to solve the problem in the prior art that the air duct of the upper air outlet is relatively long and its layout is not very reasonable due to the arrangement of the heat exchanger.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an indoor unit, comprising a casing, a fan and a heat exchanger arranged in the casing, wherein the heat exchanger is located at the rear side of the fan and its two ends extend toward the top and bottom of the fan respectively.

[0007] To achieve the above object, the present invention also adopts the following technical solution: an air conditioner, including the above indoor unit.

[0008] The present invention also adopts the following technical solution: an air conditioning control method, comprising the following steps:

[0009] Select an operating mode of the air conditioner, the air conditioner being one of the above-mentioned air conditioners, the operating mode including a warm-foot heating mode, and the operation of the warm-foot heating mode is as follows:

[0010] When the air conditioner is in heating mode, close the upper air outlet and open the lower air outlet;

[0011] Switch the air duct switching member to make the lower air duct completely open and the connection between the upper air duct and the lower air duct sealed;

[0012] At the same time, the air guide plate at the lower air outlet rotates counterclockwise until the angle between the extension line of its end and the ground is 55-97 degrees.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The indoor unit arranges the heat exchanger at the rear side of the fan and its two ends extend to the top and bottom of the fan respectively, so that the space in the casing in front of the fan is idle, which is convenient for the reasonable arrangement of the upper and lower air outlets. The path of the air discharged by the fan to the upper and lower air outlets is relatively short, and the arrangement is more reasonable.

[0015] 2. This air conditioner has the advantages of the above-mentioned indoor unit.

[0016] 3. The air conditioning control method designs a foot-warming heating mode on the air conditioner of the present invention to meet the user's demand for foot-warming heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a state when the upper air outlet is turned on according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a state when the lower air outlet is turned on according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of a state of an embodiment of the present invention in a bath-type cooling mode;

[0020] Figure 4 It is a schematic diagram of the state of an embodiment of the present invention in a foot-warming heating mode;

[0021] Figure 5 It is a schematic diagram of the state of an embodiment of the present invention in an enveloping air supply mode;

[0022] Figure 6 It is a schematic diagram of the state of an embodiment of the present invention in an enveloping heating mode;

[0023] Figure 7 FIG. 1 is a schematic diagram of a state of an embodiment of the present invention in an enveloping cooling mode.

[0024] The figure marks in the drawings of the specification include: casing 1, cross-flow fan 2, heat exchanger 3, lower air outlet 4, upper air outlet 5, air inlet 6, air guide plate 7, lower air duct 8, upper air duct 9, accommodating space 10, air duct switching structure 11, gear 111, and movable shielding member 112. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below through specific embodiments:

[0026] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides an indoor unit, including a casing 1 and a fan and a heat exchanger 3 arranged in the casing 1. The heat exchanger 3 is located at the rear side of the fan and its two ends extend to the top and bottom of the fan respectively.

[0027] In this embodiment:

[0028] The heat exchanger 3 is arc-shaped, so it is reasonably arranged on the rear side of the fan and extends to the top and bottom of the fan, so that the space in the casing 1 located in front of the fan is idle, which facilitates the reasonable arrangement of the upper air outlet 5 and the lower air outlet 4. The path for the wind discharged by the fan to reach the upper air outlet 5 and the lower air outlet 4 is relatively short, and the arrangement is more reasonable.

[0029] The fan is specifically a cross-flow fan 2 .

[0030] like Figure 1 and Figure 2 As shown, according to another embodiment of the present invention, in the indoor unit, a lower air outlet 4 is provided at the bottom front side of the casing 1, and an upper air outlet 5 is provided at the upper front side of the casing 1.

[0031] Here: the position design of the lower air outlet 4 is convenient for the air to be discharged from the lower side of the indoor unit, and the position design of the upper air outlet 5 is convenient for the air to be discharged from the upper side of the indoor unit. It can not only meet the demand of blowing hot air downward during heating, but also meet the demand of long-distance delivery when sending air upward during cooling. It will not cause the problem of wind loss and weakening, which is conducive to uniform temperature distribution in the whole room.

[0032] The housing 1 has an air inlet 6 at the top. The indoor air enters the housing 1 through the air inlet 6 and is first heat exchanged in the heat exchanger 3 , then passes through the cross-flow fan 2 and is discharged from the lower air outlet 4 and / or the upper air outlet 5 .

[0033] Based on the above scheme:

[0034] The lower air outlet 4 and the upper air outlet 5 are both provided with air guide plates 7, and the lower air outlet 4 and the upper air outlet 5 are connected.

[0035] An air duct switching member for controlling the connection state between the air port and the upper air outlet 5 is provided.

[0036] In this embodiment, the design of the air guide plate 7 can guide the wind discharged from the lower air outlet 4 or the upper air outlet 5 to the position required by the user; at the same time, the lower air outlet 4 or the upper air outlet 5 can also be sealed.

[0037] Specifically:

[0038] When the indoor unit is in heating mode, the air duct switching component can be driven to cover the upper air outlet 5, and the cross-flow fan 2 is only connected to the lower air outlet 4. The air after heat exchange in the heat exchanger 3 flows out to the lower air outlet 4, and the hot air is blown downward and then slowly rises in the room to promote uniform room temperature.

[0039] When the indoor unit is in cooling mode, the air duct switching component can be driven to cover the lower air outlet 4, and the cross-flow fan 2 is only connected to the upper air outlet 5. The air after heat exchange in the heat exchanger 3 flows out to the upper air outlet 5, and the cold air is blown upward and then slowly descends in the room to promote uniform room temperature.

[0040] Furthermore, the casing 1 is connected to the lower air outlet 4 through the lower air duct 8, and is connected to the upper air outlet 5 through the upper air duct 9, and the upper air duct 9 is connected to the lower air duct 8; the air duct switching component is arranged at the connection between the upper air duct 9 and the lower air duct 8 to control the connection between the upper air duct 9 and the lower air duct 8 and / or the sealing state of the lower air duct 8 according to the working mode selection.

[0041] By utilizing the space in the casing 1 in front of the cross-flow fan 2, the air outlet duct of the traditional wall mounted unit is divided into an upper air duct 9 and a lower air duct 8. When the upper air duct 9 is utilized to achieve upward air outlet, the air duct is more unobstructed and the loss of air outlet wind speed is less. When the wall mounted unit discharges air upward in cooling mode, the airflow can diffuse farther, which is more conducive to the mixing and uniformity of the room temperature field.

[0042] Specifically:

[0043] When the indoor unit is in heating mode, the duct switching member can be driven to shield the connection between the upper duct 9 and the lower duct 8, and the upper air outlet 5 is sealed by the corresponding air guide plate 7. At this time, the cross-flow fan 2 is only connected to the lower air outlet 4 through the lower air duct 8, and the air after heat exchange in the heat exchanger 3 flows out to the lower air outlet 4, and the hot air is blown downward and then slowly rises in the room to promote room temperature uniformity (such as Figure 2 ).

[0044] When the indoor unit is in cooling mode, the duct switching element can be driven to cover the air inlet 6 of the lower duct 8, and the lower air outlet 4 is covered; at this time, the cross-flow fan 2 is connected to the upper air outlet 5 only through the upper air duct 9, and the air after heat exchange in the heat exchanger 3 flows out to the upper air outlet 5, and the cold air is blown upward and then slowly drops in the room to promote the uniformity of the room temperature (such as Figure 1 ).

[0045] In order to reasonably install and layout the air duct switching component, a panel located below the upper air outlet 5 on the front side of the casing 1 and a side wall of the upper air duct 9 and a side wall of the lower air duct 8 are used to form a receiving space 10 for accommodating the air duct switching component.

[0046] Specifically, the accommodating space 10 is formed by the wall surface a of the upper air duct 9, the wall surface b of the lower air duct 8 and the panel. The wall surface a of the upper air duct 9 is a smooth arc with an opening upward, which is used to guide the air derived from the cross-flow fan 2 upward and forward to be blown out from the upper air outlet 5; the wall surface b of the lower air duct 8 is a smooth arc with an opening downward, which is used to guide the air derived from the cross-flow fan 2 downward and forward to be blown out from the lower air outlet 4.

[0047] In the present solution, the accommodating space 10 is specifically in a triangular shape, and a display device can be arranged in the accommodating space 10, so as to reasonably layout the display device; generally, the hanging display device is generally arranged on the back side of the panel. In the present solution, the heat exchanger 3 is designed on the back side of the panel, which will make the display device less affected by the temperature of the heat exchanger 3, and the display device will be more reliable in use.

[0048] At the same time, the panel and the heat exchanger 3 are no longer adjacent to each other, which also avoids the problem that when the temperature of the heat exchanger 3 changes, the panel is deformed and its appearance is affected.

[0049] like Figure 1 and Figure 2 As shown, according to another embodiment of the present invention, an indoor unit, wherein the air duct switching component includes two air duct switching structures 11, and the two air duct switching structures 11 correspond one-to-one with the connecting point between the upper air duct 9 and the lower air duct 8 and the air inlet 6 of the lower air duct 8.

[0050] Here, the two air duct switching structures 11 seal or conduct the connection between the upper air duct 9 and the lower air duct 8 and the air inlet 6 of the lower air duct 8 according to the needs. Specifically, each of the air duct switching structures 11 includes a driver, a gear 111 and a movable shielding member 112;

[0051] Wherein, the driver is arranged in the accommodation space 10;

[0052] The gear 111 is connected to the driver;

[0053] A rack structure meshing with the gear 111 is formed on one side of the movable shielding member 112 . One end of the movable shielding member 112 is arranged toward a movable opening formed on the accommodating space 10 . The movable opening is connected to the connection point between the upper air duct 9 and the lower air duct 8 .

[0054] In this embodiment:

[0055] The driver is a motor, which drives the gear 111 to rotate, and the movable shielding member 112 is moved by the cooperation of the gear 111 and the rack structure. The movable shielding member 112 then slides into the accommodating space 10 from the movable opening to intercept the connection between the upper air duct 9 and the lower air duct 8 or the air inlet 6 of the lower air duct 8 to disconnect the connection between the upper air duct 9 and the lower air duct 8 or to disconnect the conduction of the lower air duct 8; the motor drives the gear 111 to rotate in the opposite direction, and the movable shielding member 112 is moved in the opposite direction by the cooperation of the gear 111 and the rack structure. The movable shielding member 112 then moves into the accommodating space 10 through the movable opening to be stored, to connect the connection between the upper air duct 9 and the lower air duct 8 or to conduct the conduction of the lower air duct 8.

[0056] According to the arrangement of the upper air duct 9 and the lower air duct 8 , the movable shielding members 112 in the two air duct switching structures 11 are arranged in a staggered manner to control the conduction states of the upper air duct 9 and the lower air duct 8 respectively.

[0057] The movable shielding member 112 is specifically an arc-shaped block structure, and the side surface of the movable shielding member 112 away from the rack structure is smooth.

[0058] According to another embodiment of the present invention, an air conditioner includes the indoor unit in any one of the above embodiments and has the advantages of the above indoor units.

[0059] According to another embodiment of the present invention, the air conditioner control method comprises the following steps:

[0060] Select the operating mode of the air conditioner, which includes a foot-warming heating mode, a bathing cooling mode, an enveloping air supply mode, an enveloping heating mode and an enveloping cooling mode, so that the air conditioner has different working modes, so that users can make reasonable adjustments according to their own needs.

[0061] like Figure 4 As shown, the specific operation of the foot-warming heating mode is as follows:

[0062] When the air conditioner is in heating mode, close the upper air outlet 5 and open the lower air outlet 4;

[0063] Switch the air duct switching member to make the lower air duct 8 fully connected and the connection between the upper air duct 9 and the lower air duct 8 sealed;

[0064] At the same time, the air guide plate 7 at the lower air outlet 4 rotates counterclockwise until the angle between the extension line of its end and the ground is 55-97 degrees; the specific angle can be 55 degrees, 60 degrees, 75 degrees, 84 degrees or 97 degrees, etc.

[0065] like Figure 3 As shown, the operation of the bathing cooling mode is as follows:

[0066] When the air conditioner is in cooling mode, the lower air outlet 4 is closed and the upper air outlet 5 is opened;

[0067] Switch the air duct switching member to seal the lower air duct 8 and fully open the connection between the upper air duct 9 and the lower air duct 8;

[0068] At the same time, the air guide plate 7 at the upper air outlet rotates clockwise until the angle between the extension line of its end and the ground is 15-65 degrees, and the specific angle can be 15 degrees, 20 degrees, 35 degrees, 50 degrees or 65 degrees.

[0069] like Figure 5 As shown, the operation of the enveloping air supply mode is as follows:

[0070] When the air conditioner is in working state, open the upper air outlet 5 and the lower air outlet 4;

[0071] Switch the air duct switching member to make the lower air duct 8 and the connection between the upper air duct 9 and the lower air duct 8 fully conductive;

[0072] At the same time, the air guide plate 7 at the upper air outlet rotates clockwise until the angle between the extension line of its end and the ground is 20-50 degrees, and the specific angle can be 20 degrees, 30 degrees, 40 degrees, 45 degrees or 50 degrees, etc.; and the air guide plate 7 at the lower air outlet 4 rotates counterclockwise until the angle between the extension line of its end and the ground is 90-140 degrees, and the specific angle can be 90 degrees, 100 degrees, 116 degrees, 130 degrees or 140 degrees, etc.

[0073] like Figure 6 As shown, the operation of the enveloping heating mode is as follows:

[0074] When the air conditioner is in heating mode, open the upper air outlet 5 and the lower air outlet 4;

[0075] The air duct switching member is switched to make the lower air duct 8 fully connected, and the connection between the upper air duct 9 and the lower air duct 8 is not fully connected; at this time, the opening degree of the connection between the upper air duct 9 and the lower air duct 8 can be 50%, that is, the corresponding movable shielding member 112 shields half of the connection between the upper air duct 9 and the lower air duct 8;

[0076] At the same time, the air guide plate 7 at the upper air outlet rotates clockwise until the angle between the extension line of its end and the ground is 105-180 degrees, and the specific angle can be 105 degrees, 120 degrees, 150 degrees, 165 degrees or 180 degrees, etc.; and the air guide plate 7 at the lower air outlet 4 rotates counterclockwise until the angle between the extension line of its end and the ground is 60-100 degrees, and the specific angle can be 60 degrees, 75 degrees, 80 degrees, 90 degrees or 100 degrees, etc.

[0077] like Figure 7 As shown, the operation of the wraparound cooling mode is as follows:

[0078] When the air conditioner is in cooling mode, open the upper air outlet 5 and the lower air outlet 4;

[0079] The air duct switching member is switched to make the lower air duct 8 fully connected, and the connection between the upper air duct 9 and the lower air duct 8 is not fully connected; at this time, the opening degree of the connection between the upper air duct 9 and the lower air duct 8 can be 50%, that is, the corresponding movable shielding member 112 shields half of the connection between the upper air duct 9 and the lower air duct 8;

[0080] At the same time, the air guide plate 7 at the upper air outlet rotates clockwise until the angle between the extension line of its end and the ground is 110-180 degrees, and the specific angle can be 110 degrees, 125 degrees, 145 degrees, 170 degrees or 180 degrees, etc.; and the air guide plate 7 at the lower air outlet 4 rotates counterclockwise until the angle between the extension line of its end and the ground is 15-50 degrees, and the specific angle can be 15 degrees, 20 degrees, 35 degrees, 45 degrees or 50 degrees, etc.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An air conditioner, comprising an indoor unit, wherein the indoor unit comprises a casing, a fan and a heat exchanger arranged in the casing, wherein: The heat exchanger is located at the rear side of the fan and its two ends extend toward the top and bottom of the fan respectively; The bottom front side of the housing is provided with a lower air outlet, and the upper front side of the housing is provided with an upper air outlet; The lower air outlet and the upper air outlet are both provided with air guide plates, and the lower air outlet is connected with the upper air outlet, and an air duct switching member for controlling the connection state of the lower air outlet and the upper air outlet is provided between the lower air outlet and the upper air outlet; The casing is connected to the lower air outlet through the lower air duct, the casing is connected to the upper air outlet through the upper air duct, and the upper air duct is connected to the lower air duct; the air duct switching element is arranged at the connection between the upper air duct and the lower air duct to control the connection between the upper air duct and the lower air duct and / or the sealing state of the lower air duct according to the working mode selection; The air conditioner has an enveloping heating mode, and the operation of the enveloping heating mode is as follows: When the air conditioner is in heating mode, open the upper and lower air outlets; Switch the air duct switching component to make the lower air duct fully open, and the opening of the connection between the upper air duct and the lower air duct is 50%; At the same time, the air guide plate at the upper air outlet rotates clockwise until the angle between the extension line of its end and the ground is 105-180 degrees, and the air guide plate at the lower air outlet rotates counterclockwise until the angle between the extension line of its end and the ground is 60-100 degrees.

2. An air conditioner according to claim 1, characterized in that: The panel located below the upper air outlet on the front side of the casing and the side wall of the upper air duct and the side wall of the lower air duct are surrounded to form an accommodating space for accommodating the air duct switching component.

3. An air conditioner according to claim 2, characterized in that: The accommodating space is in a triangular shape.

4. An air conditioner according to claim 2 or 3, characterized in that: The air duct switching component includes two air duct switching structures, and the two air duct switching structures are matched with the connecting part between the upper air duct and the lower air duct and the air inlet of the lower air duct in a one-to-one manner.

5. An air conditioner according to claim 4, characterized in that: Each air duct switching structure includes: A driver, wherein the driver is arranged in the accommodation space; A gear connected to a driver; A movable shielding member, wherein a rack structure meshing with the gear is formed on one side of the movable shielding member, and one end of the movable shielding member is arranged toward a movable opening formed on the accommodating space, and the movable opening is connected to a connecting point between the upper air duct and the lower air duct.

6. The air conditioner according to claim 1, characterized in that: An air inlet is provided on the top of the casing.

7. An air conditioning control method, characterized in that: The steps include: An operating mode of the air conditioner is selected, wherein the air conditioner is an air conditioner according to claim 1, and the operating mode includes a warm-foot heating mode. The operation of the warm-foot heating mode is as follows: When the air conditioner is in heating mode, close the upper air outlet and open the lower air outlet; Switch the air duct switching member to make the lower air duct completely open and the connection between the upper air duct and the lower air duct sealed; At the same time, the air guide plate at the lower air outlet rotates counterclockwise until the angle between the extension line of its end and the ground is 55-97 degrees.

8. An air conditioning control method according to claim 7, characterized in that: The operation mode also includes a bathing cooling mode, and the operation of the bathing cooling mode is as follows: When the air conditioner is in cooling mode, close the lower air outlet and open the upper air outlet; Switch the air duct switching member to seal the lower air duct and fully open the connection between the upper air duct and the lower air duct; At the same time, the air guide plate at the upper air outlet rotates clockwise until the angle between the extension line of its end and the ground is 15-65 degrees.

9. The air conditioning control method according to claim 7, characterized in that: The operation mode also includes an enveloping air supply mode, and the operation of the enveloping air supply mode is as follows: When the air conditioner is in working state, open the upper air outlet and the lower air outlet; Switch the air duct switching member to make the lower air duct and the connection between the upper air duct and the lower air duct fully conductive; At the same time, the air guide plate at the upper air outlet rotates clockwise until the angle between the extension line of its end and the ground is 20-50 degrees, and the air guide plate at the lower air outlet rotates counterclockwise until the angle between the extension line of its end and the ground is 90-140 degrees.

10. The air conditioning control method according to claim 7, characterized in that: The operation mode also includes an enveloping cooling mode, and the operation of the enveloping cooling mode is as follows: When the air conditioner is in cooling mode, open the upper and lower air outlets; The air duct switching element is switched to make the lower air duct fully connected, and the connection between the upper air duct and the lower air duct is not fully connected; At the same time, the air guide plate at the upper air outlet rotates clockwise until the angle between the extension line of its end and the ground is 110-180 degrees, and the air guide plate at the lower air outlet rotates counterclockwise until the angle between the extension line of its end and the ground is 15-50 degrees.

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