Air conditioner

Abstract

The air conditioner comprises a shell, a heat exchanger and a centrifugal fan, the shell is provided with a side air inlet, a bottom air inlet and an air outlet, the side air inlet and the air outlet are formed in different side faces of the shell respectively, and the bottom air inlet is formed in the bottom side of the shell; the heat exchanger is arranged in the shell and divides an inner cavity of the shell into a lower cavity and an upper cavity which are oppositely arranged in the vertical direction, the side air inlet and the bottom air inlet are both communicated with the lower cavity, and the air outlet is communicated with the upper cavity; the centrifugal fan is arranged in the lower cavity and comprises a plurality of wind wheels, and the centrifugal fan is used for driving gas in the lower cavity to flow through the heat exchanger and the upper cavity and be exhausted through the air outlet. According to the air conditioner, the centrifugal fan is arranged close to the air inlet, and the heat exchanger is arranged close to the air outlet, so that the internal heat loss is low, the overall effective energy utilization rate is high, energy is saved, and the air inlet amount and the air inlet efficiency are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to an air conditioner. Background Technology

[0002] Air conditioning is a control device used to regulate indoor environmental parameters such as temperature and humidity. In recent years, as people's requirements for living comfort have increased, the popularity of air conditioning has also increased. However, existing air conditioners still have problems such as insufficient air intake, large internal heat loss, low overall effective energy utilization, and easy backflow of air from the outlet into the inlet. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, this utility model proposes an air conditioner in which the centrifugal fan is located near the air inlet and the heat exchanger is located near the air outlet, resulting in low internal heat loss and high overall effective energy utilization, thus achieving energy saving. Secondly, because multiple air inlets are provided and the centrifugal fan includes multiple impellers, the centrifugal fan has a stronger conveying capacity, fully ensuring the air intake volume and efficiency.

[0005] The air conditioner according to this embodiment of the utility model includes:

[0006] The housing has a side air inlet, a bottom air inlet, and an air outlet. The side air inlets and air outlets are respectively located on different sides of the housing, and the bottom air inlet is located on the bottom side of the housing.

[0007] A heat exchanger is disposed inside the housing and divides the inner cavity of the housing into a lower cavity and an upper cavity arranged opposite each other in the vertical direction. The side air inlet and the bottom air inlet are both connected to the lower cavity, and the air outlet is connected to the upper cavity.

[0008] A centrifugal fan is provided in the lower chamber and includes multiple impellers. The centrifugal fan is used to drive the gas in the lower chamber to flow through the heat exchanger and the upper chamber and be discharged through the air outlet.

[0009] In some embodiments, the housing includes:

[0010] The housing has a front panel and two side panels, the two side panels are arranged opposite each other along the length of the housing, each side panel is provided with a side air inlet, the front panel is located between the two side panels, and the air outlet is located on the front panel;

[0011] A base plate is provided on the bottom side of the two side plates and the panel, and the bottom air inlet is provided on the base plate.

[0012] In some embodiments, the side air inlet is an annular air inlet.

[0013] In some embodiments, the centrifugal fan includes a motor, the motor and the annular air outlet are arranged coaxially, and the inner diameter of the annular air outlet is not less than the outer diameter of the motor;

[0014] And / or, the side plate is provided with a plurality of through holes penetrating the side plate, and the plurality of through holes are arranged in a ring to form the annular air vent.

[0015] In some embodiments, the housing includes a back plate arranged opposite to the panel, the heat exchanger is arranged obliquely downward along the direction from the back plate to the panel, the air outlet is disposed on the panel and located above the heat exchanger, and one side of the heat exchanger is connected to the panel and the other side of the heat exchanger is connected to the back plate.

[0016] In some embodiments, the heat exchanger includes a heat exchanger body and two side plates. One side of the heat exchanger body is connected to the panel, and the other side of the heat exchanger body is connected to the back plate. The heat exchanger body is located between the two side plates, and the two side plates are respectively disposed between the heat exchanger and the two side plates.

[0017] And / or, including a water tray integrated into the panel and extending along the length of the housing, the back plate having a support member, one side of the heat exchanger overlapping the support member, and the other side of the heat exchanger overlapping the water tray.

[0018] In some embodiments, an air guide plate is included, which is rotatably mounted at the air outlet, and the air conditioner includes a heating mode and a cooling mode;

[0019] In the heating mode, the air guide plate is arranged at an angle downwards to make the airflow at the air outlet flow downwards at an angle; in the cooling mode, the air guide plate is arranged at an angle upwards to make the airflow at the air outlet flow upwards at an angle.

[0020] In some embodiments, the centrifugal fan further includes:

[0021] Multiple volutes are provided in the lower cavity and connected to the side air inlet and the bottom air inlet. The outlet of each volute is arranged facing the heat exchanger. The multiple volutes are spaced apart along the length of the shell, and each volute has an inlet on both sides of the length direction. Multiple impellers are rotatably assembled in the multiple volutes.

[0022] The motor is located in the lower cavity, and its drive shaft is connected to multiple wind turbines and is used to drive the multiple wind turbines to rotate. The motor is located between two adjacent volutes.

[0023] In some embodiments, the housing includes a support frame and a cover, the housing including a front panel and a back panel arranged opposite to each other, the support frame being integrated into the back panel, the cover being detachably mounted to the support frame, and the motor being assembled within the space enclosed by the support frame and the cover;

[0024] And / or, including a bearing housing integrated into the back plate of the housing, the bearing housing being used to mount a bearing rotatably assembled with the drive shaft of the motor.

[0025] In some embodiments, a plurality of filters are included, and both the side air inlet and the bottom air inlet are provided with the filters.

[0026] Beneficial effects: In this embodiment of the air conditioner, the centrifugal fan is positioned near the air inlet, and the heat exchanger is positioned near the air outlet, resulting in low internal heat loss and high overall effective energy utilization, thus achieving energy saving. Secondly, because multiple air inlets are provided, and the centrifugal fan includes multiple impellers, it has a stronger conveying capacity, fully ensuring the air volume and efficiency. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of an air conditioner according to an embodiment of the present utility model.

[0028] Figure 2 This is a schematic diagram of the cross-section of the air conditioner in the direction perpendicular to the left and right of this utility model embodiment.

[0029] Figure 3 This is an exploded schematic diagram of an air conditioner according to an embodiment of this utility model.

[0030] Figure 4 This is a schematic diagram of the front side of the air conditioner according to an embodiment of the present utility model.

[0031] Figure 5 This is a schematic diagram of the air conditioner in cooling mode and heating mode according to an embodiment of the present invention.

[0032] Figure label:

[0033] 1-Housing; 11-Front panel; 111-Air outlet; 12-Side panel; 121-Side air inlet; 13-Bottom panel; 131-Bottom air inlet; 14-Lower cavity; 15-Upper cavity; 16-Back panel; 161-Supporting component;

[0034] 2-Heat exchanger; 21-Heat exchanger body; 22-Side plate;

[0035] 3-Centrifugal fan; 31-Impeller; 32-Voltage casing; 33-Motor;

[0036] 4-Air guide plate; 5-Water receiving tray; 6-Support frame; 7-Pressure cap; 8-Filter screen; 9-Bearing frame. Detailed Implementation

[0037] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] The air conditioner of this utility model embodiment includes a housing 1, a heat exchanger 2, and a centrifugal fan 3.

[0039] The housing 1 has a side air inlet 121, a bottom air inlet 131, and an air outlet 111. The side air inlet 121 and the air outlet 111 are respectively located on different sides of the housing 1, and the bottom air inlet 131 is located on the bottom side of the housing 1. For example, Figure 1 As shown, the housing 1 can be roughly rectangular, and the length direction of the housing 1 can be left and right. The side air inlet 121 can be located on the left or right side of the housing 1, the air outlet 111 can be located on the front side of the housing 1, and the bottom air inlet 131 is located on the bottom side of the housing 1.

[0040] The heat exchanger 2 is located inside the shell 1 and divides the inner cavity of the shell 1 into a lower cavity 14 and an upper cavity 15 arranged opposite each other in the vertical direction. The side air inlet 121 and the bottom air inlet 131 are both connected to the lower cavity 14, and the air outlet 111 is connected to the upper cavity 15.

[0041] For example, such as Figure 2 As shown, heat exchanger 2 can be a plate structure. Specifically, heat exchanger 2 can be an evaporator or a condenser. When it is an evaporator, heat exchanger 2 can cool the airflow to meet the needs of indoor cooling. When it is a condenser, heat exchanger 2 can heat the airflow to meet the needs of indoor heating.

[0042] The heat exchanger 2 can be installed inside the shell 1 and can be arranged at an angle from front bottom to rear top. The outer periphery of the heat exchanger 2 can be sealed to the corresponding inner wall of the shell 1, thereby preventing airflow from flowing through the gap between the heat exchanger 2 and the inner wall of the shell 1, which is beneficial to improving the heat exchange effect.

[0043] It should be noted that the heat exchanger 2 can divide the shell 1 into two relatively independent chambers, namely the lower chamber 14 and the upper chamber 15. The lower chamber 14 is located below the heat exchanger 2, and the upper chamber 15 is located above the heat exchanger 2. The aforementioned side air inlet 121 and bottom air inlet 131 can both communicate with the lower chamber 14, while the aforementioned air outlet 111 can communicate with the upper chamber 15.

[0044] Centrifugal fan 3 is located in the lower chamber 14 and includes multiple impellers 31. Centrifugal fan 3 is used to drive the gas in the lower chamber 14 through the heat exchanger 2 and the upper chamber 15 and discharge it through the air outlet 111.

[0045] For example, such as Figure 2 As shown in Figure 3, the centrifugal fan 3 can be located below the heat exchanger 2. The centrifugal fan 3 can include three impellers 31, each of which can be a double-suction centrifugal impeller 31. In some other embodiments, the centrifugal fan 3 can also include two, four, five, or other numbers of impellers 31.

[0046] When the centrifugal fan 3 is running, the three impellers 31 can rotate synchronously, allowing external airflow to flow directly into the volute 32 of the centrifugal fan 3 through the side air inlet 121 and the bottom air inlet 131. Then, the airflow will be discharged from the outlet of the centrifugal fan 3 and discharged into the lower chamber 14. Since the discharged airflow has a certain flow velocity, the airflow will flow directly through the heat exchanger 2 and exchange heat with the heat exchanger 2, thereby achieving heating or cooling of the airflow. The airflow after heat exchange will enter the upper chamber 15 and can finally be discharged through the air outlet 111 connected to the upper chamber 15.

[0047] In this embodiment of the air conditioner, the centrifugal fan 3 is arranged below the heat exchanger 2, and the centrifugal fan 3 is located near the air inlet, while the heat exchanger 2 is located near the air outlet 111. This allows the centrifugal fan 3 to directly draw in air from outside the air conditioner, thereby ensuring the air intake volume of the centrifugal fan 3.

[0048] On the other hand, the airflow that exchanges heat with the heat exchanger 2 can be directly discharged through the air outlet 111, avoiding the situation in the prior art where the airflow for heat exchange needs to flow through components such as fans. This avoids the situation where the airflow for heat exchange is prone to heat loss when flowing through other components, thereby reducing the loss of internal heat and improving the overall effective energy utilization.

[0049] Secondly, since the side air inlet 121 and the bottom air inlet 131 are located on different surfaces of the air conditioner and the air outlet 111, the air inlet direction and the air outlet direction are not in the same plane, thereby avoiding the situation where the outlet airflow is easily drawn back by the air inlet, and improving the overall temperature regulation effect of the air conditioner.

[0050] In addition, the centrifugal fan 3 has a greater static pressure capacity than conventional cross-flow fans, and can blow the airflow further at the same air volume, thereby enhancing the settling cooling effect of the airflow discharged through the air outlet 111. When heating, the hot airflow can also reach the ground better and form a warm foot wind effect, improving the user experience.

[0051] Furthermore, since it is equipped with multiple air inlets and the centrifugal fan 3 includes multiple impellers 31, the centrifugal fan 3 can also have a stronger conveying capacity, fully ensuring the air intake volume and air intake efficiency.

[0052] In some embodiments, the housing 1 includes a front panel 11, two side panels 12, and a bottom plate 13. The two side panels 12 are arranged opposite each other in the length direction of the housing 1, and each side panel 12 is provided with a side air inlet 121. The front panel 11 is located between the two side panels 12, and an air outlet 111 is located on the front panel 11. The bottom plate 13 is located on the bottom side of the two side panels 12 and the front panel 11, and a bottom air inlet 131 is located on the bottom plate 13.

[0053] For example, such as Figure 3 As shown, panel 11 can be the front shell wall portion of housing 1, and side panel 12 can be the left or right shell wall portion of housing 1. Housing 1 includes two side panels 12, which can be arranged opposite each other in the left-right direction. Each side panel 12 can be provided with a side air inlet 121, which can be located in the middle area of ​​the bottom of each side panel 12. Air outlet 111 can be a square opening, which can be located on the top of panel 11 and can extend in the left-right direction.

[0054] like Figure 3 As shown, the bottom plate 13 can be the bottom side shell wall of the housing 1. The bottom plate 13 can be arranged horizontally. The bottom air inlet 131 can be set on the bottom plate 13, and the bottom air inlet 131 can be a square opening, so that the housing 1 can also achieve bottom side air intake, which is conducive to increasing the air intake volume of the air conditioner, and thus further enhancing the circulation efficiency of indoor airflow.

[0055] In some embodiments, the side air inlet 121 is an annular air inlet. For example, as... Figure 3 As shown, the side air inlet 121 can be annular, so that the shape of the side air inlet 121 can match the inlet of the centrifugal fan 3, which can reduce the overall size of the side air inlet 121 while ensuring the air volume.

[0056] In some embodiments, the centrifugal fan 3 includes a motor 33, the motor 33 and an annular air outlet are coaxially arranged, and the inner diameter of the annular air outlet is not less than the outer diameter of the motor 33. For example, as Figure 5As shown, the inner diameter of the annular air vent can be R2, and the outer diameter of the motor 33 can be R1. R2 can be larger than R1, so that the inner side plate 12 of the annular air vent can completely cover the motor 33, preventing the motor 33 from being exposed, ensuring the appearance, and also playing a protective role.

[0057] In some embodiments, the side plate 12 is provided with a plurality of through holes penetrating the side plate 12, and the plurality of through holes are arranged in a ring to form an annular air vent. For example, as Figure 1 As shown, multiple through holes can be divided into multiple through hole groups, and each through hole group can include multiple through holes spaced apart along the radial direction of the annular air vent, for example, Figure 1 Each through-hole group can include three through holes, and multiple through-hole groups can be arranged at equal intervals along the circumference of the annular air vent.

[0058] This satisfies the requirement for arranging the annular air vents and also allows the inner side plate 12 of the annular air vent to be connected to the outer side plate 12 of the annular air vent, ensuring the integrity and wholeness of the side plate 12.

[0059] In some embodiments, the housing 1 includes a back plate 16 arranged opposite to the panel 11, the heat exchanger 2 is arranged obliquely downward along the direction from the back plate 16 to the panel 11, the air outlet 111 is provided on the panel 11 and located above the heat exchanger 2, and one side of the heat exchanger 2 is connected to the panel 11, and the other side of the heat exchanger 2 is connected to the back plate 16.

[0060] For example, such as Figure 2 As shown, the panel 11 and the back plate 16 can be arranged opposite each other in the front-rear direction. The panel 11 can be located on the front side of the housing 1, and the back plate 16 can be located on the rear side of the housing 1. The heat exchanger 2 can be arranged inclined in a direction from front-low to rear-up. The front side of the heat exchanger 2 can be connected and fixed to the panel 11, and the rear side of the heat exchanger 2 can be connected and fixed to the back plate 16.

[0061] Since the air conditioner's fan is a centrifugal fan 3, the airflow discharged from the outlet of the centrifugal fan 3 will flow tangentially. The heat exchanger 2 adopts the above-mentioned tilt angle design, which allows the heat exchanger 2 to be roughly perpendicular to the airflow flowing out of the centrifugal fan 3, thereby helping to ensure the heat exchange effect and improve the heat exchange efficiency.

[0062] In some embodiments, such as Figure 3 As shown, the heat exchanger 2 includes a heat exchanger body 21 and two side plates 22. The heat exchanger body 21 can be an evaporator or a condenser with heat exchange function, while the side plates 22 can be sheet metal or other structural components.

[0063] One side of the heat exchanger body 21 is connected to the panel 11, and the other side of the heat exchanger body 21 is connected to the back plate 16. The heat exchanger body 21 is located between the two side plates 12, and the two side plates 22 are respectively located between the heat exchanger 2 and the two side plates 12.

[0064] The heat exchanger body 21 can be generally a rectangular plate structure. The front edge of the heat exchanger body 21 can be connected and fixed to the panel 11, and the rear edge of the heat exchanger body 21 can be connected and fixed to the back plate 16, thereby ensuring the connection and sealing of the front and rear sides of the heat exchanger body 21 and preventing the airflow from flowing through the gaps on the front and rear sides of the heat exchanger body 21.

[0065] The heat exchanger body 21 has side plates 22 at both ends along its length and between the corresponding side plates 12. For example, as Figure 3 As shown, there can be two side plates 22, both of which can be corner plate-shaped structures. One side plate 22 can be connected between the left side of the heat exchanger body 21 and the left side plate 12, and the other side plate 22 can be connected between the right side of the heat exchanger body 21 and the right side plate 12.

[0066] The side plate 22 facilitates the installation and fixing of the heat exchanger body 21, improving the ease of installation. On the other hand, the side plate 22 can also seal the gap between the heat exchanger body 21 and the corresponding side plate 12, preventing the airflow from flowing directly into the upper cavity 15 without passing through the heat exchanger body 21, thus ensuring the heat exchange effect.

[0067] In some embodiments, the air conditioner includes a water tray 5, which is integrated into the panel 11 and extends along the length of the housing 1. The back panel 16 is provided with a support member 161, one side of the heat exchanger 2 overlaps with the support member 161, and the other side of the heat exchanger 2 overlaps with the water tray 5.

[0068] For example, such as Figure 2 As shown, the water receiving tray 5 can be a V-shaped plate, integrally formed on the rear side of the panel 11, and can extend along the left and right directions. The support member 161 can be a strip structure, integrally formed on the front side of the back plate 16, and extends along the left and right directions. During assembly, the front side of the heat exchanger body 21 can be overlapped and fixed above the water receiving tray 5, and the rear side of the heat exchanger body 21 can be overlapped and fixed above the support member 161.

[0069] This ensures the sealing of the front and rear sides of the heat exchanger body 21, preventing air leakage and facilitating its installation and fixation. Furthermore, it allows condensate from the heat exchanger body 21 to flow directly to the water collection pan 5, simplifying condensate collection.

[0070] In some embodiments, such as Figures 2 to 5 As shown, the air conditioner includes an air guide plate 4, which is rotatably mounted at the air outlet 111. The air conditioner includes a heating mode and a cooling mode. In the heating mode, the air guide plate 4 is arranged at an angle downward so that the airflow at the air outlet 111 flows at an angle downward. In the cooling mode, the air guide plate 4 is arranged at an angle upward so that the airflow at the air outlet 111 flows at an angle upward.

[0071] Specifically, such as Figure 5 As shown in Figure (a), the air guide plate 4 can be swung and adjusted to an upward tilt position, at which point the cooling mode is switched. The airflow discharged through the air outlet 111 will also flow upward at an angle, so that the airflow entering the room will run along the ceiling wall of the room. During the operation, the airflow will mix with the indoor air and eventually form a roughly uniform layer of cold air on the ceiling of the room. Then the cold air layer will slowly descend, so that the room will be cooled evenly from top to bottom.

[0072] like Figure 5 As shown in Figure (b), the air guide plate 4 can also be swung and adjusted to a downward tilt position. At this time, the heating mode is switched, and the airflow discharged through the air outlet 111 will flow downward at an angle, so that the hot airflow can blow directly to the ground and form a warm foot breeze, thus improving the heating effect.

[0073] In some embodiments, the centrifugal fan 3 further includes a plurality of volutes 32 and a motor 33. The plurality of volutes 32 are all disposed in the lower cavity 14 and are connected to the side air inlet 121 and the bottom air inlet 131. The outlet of each volute 32 is arranged facing the heat exchanger 2. The plurality of volutes 32 are spaced apart along the length direction of the housing 1. Each volute 32 has an inlet on both sides of the length direction. A plurality of impellers 31 are rotatably mounted in the plurality of volutes 32. The motor 33 is disposed in the lower cavity 14. The drive shaft of the motor 33 is connected to the plurality of impellers 31 and is used to drive the plurality of impellers 31 to rotate. The motor 33 is located between two adjacent volutes 32.

[0074] For example, such as Figure 3 As shown, each volute 32 can be a whistle-shaped structure, that is, each volute 32 can include a cylindrical part and a straight pipe part. The cylindrical part extends axially in the left and right direction, and the straight pipe part is connected to the cylindrical part and extends generally in the direction from front to top to back to bottom. The bottom end of the straight pipe part can be connected to the cylindrical part, and the top end of the straight pipe part can be set towards the air outlet 111.

[0075] Three impellers 31 can be provided, each rotatably mounted within the cylindrical portion of one of the three volutes 32. The drive shaft of the motor 33 can extend in the left-right direction and pass through the cylindrical portion of the three volutes 32, and the three impellers 31 can be fixed to the drive shaft. It should be noted that the left and right sides of the cylindrical portion of each volute 32 are open and each has an inlet. The inlet can be a circular opening, which facilitates bottom air intake and fully meets the usage requirements of air intake through the side air inlet 121 and the bottom air inlet 131.

[0076] like Figure 3 As shown, the motor 33 can be located between two volutes 32. For example, the motor 33 can be positioned towards the right side of the housing 1. Two volutes 32 and two impellers 31 can be arranged on the left side of the motor 33, while only one volute 32 and one impeller 31 can be arranged on the right side of the motor 33. The drive shaft of the motor 33 can pass through the corresponding volute 32 and can be rotatably assembled with the side plate 12 of the housing 1 through bearings, thereby meeting the usage requirements of driving airflow.

[0077] In some embodiments, the air conditioner includes a support frame 6 and a cover 7. The housing 1 includes a front panel 11 and a back panel 16 arranged opposite to each other. The support frame 6 is integrated into the back panel 16. The cover 7 is detachably mounted on the support frame 6. The motor 33 is assembled within the space enclosed by the support frame 6 and the cover 7.

[0078] For example, such as Figure 3 As shown, the support frame 6 can be fixed to the front side of the back plate 16. The support frame 6 can be generally a semi-cylindrical structure, and the cover 7 can also be a semi-cylindrical structure. The cover 7 can be fixed to the front side of the support frame 6 with fasteners. The motor 33 can be fixed within the space enclosed by the support frame 6 and the cover 7. This facilitates the installation and fixing of the motor 33 and also provides protection for the motor 33.

[0079] In some embodiments, the air conditioner includes a bearing bracket 9, such as Figure 3 As shown, the bearing bracket 9 is integrated into the back plate 16 of the housing 1. Specifically, it can be located on the front side of the back plate 16 and on the left side of the support frame 6. The bearing bracket 9 is used to mount the bearing that is rotatably assembled with the drive shaft of the motor 33. This satisfies the usage requirements for mounting the bearing.

[0080] In some embodiments, the air conditioner includes a plurality of filters 8, with filters 8 provided on both the side air inlet 121 and the bottom air inlet 131. For example, as Figure 3 As shown, there can be three filters 8, which can be respectively installed at the two side air inlets 121 and the bottom air inlet 131, thereby achieving gas filtration and ensuring the quality of air supply.

[0081] The air conditioner of this utility model embodiment is applied to an air conditioning system, which may further include an outdoor unit, corresponding connecting pipes, etc. The air conditioning system of this utility model embodiment, such as... Figure 4 and Figure 5 As shown, this air conditioner has its air inlet located at the bottom and side panel, while the air outlet is located at the top. It uses a centrifugal fan for air delivery. Compared with traditional air conditioners, this design has advantages such as high air pressure, large air delivery angle, long air delivery distance, and large air volume. At the same time, the top air outlet design also has the advantages of avoiding cold air blowing directly on people and making the cooling more natural.

[0082] Secondly, under the action of the centrifugal fan, the airflow can enter the casing from the bottom and sides. After flowing through the evaporator, it can flow along the air duct and finally flow upward at a certain angle from the air outlet. This solves the problem of cold air sinking rapidly in cooling mode, allowing the cold air to flow evenly and slowly over a larger area. On the other hand, it can also significantly increase the air volume and air delivery distance, enabling the airflow to evenly cover the entire room, improving the air delivery effect, ensuring the uniformity of temperature throughout the room, and thus guaranteeing the overall user comfort.

[0083] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. An air conditioner characterized by comprising: The air conditioner comprises: a shell provided with a side air inlet, a bottom air inlet and an air outlet, the side air inlet and the air outlet are respectively arranged on different sides of the shell, and the bottom air inlet is arranged on the bottom side of the shell; a heat exchanger arranged in the shell and separating an inner cavity of the shell into a lower cavity and an upper cavity arranged opposite in the up-down direction, the side air inlet and the bottom air inlet are communicated with the lower cavity, the air outlet is communicated with the upper cavity; a centrifugal fan arranged in the lower cavity and comprising a plurality of impellers, and the centrifugal fan is used to drive the gas in the lower cavity to flow through the heat exchanger and the upper cavity and be discharged through the air outlet.

2. The air conditioner of claim 1, wherein The shell comprises: a panel and two side plates arranged opposite in the length direction of the shell, each side plate is provided with the side air inlet, the panel is arranged between the two side plates, and the air outlet is arranged on the panel; a bottom plate arranged on the bottom side of the two side plates and the panel, and the bottom air inlet is arranged on the bottom plate.

3. The air conditioner of claim 2, wherein The side air inlet is a ring-shaped air inlet.

4. The air conditioner of claim 3, wherein The centrifugal fan comprises a motor, the motor and the ring-shaped air inlet are coaxially arranged, and the inner diameter size of the ring-shaped air inlet is not less than the outer diameter size of the motor; and / or, the side plate is provided with a plurality of through holes penetrating through the side plate, and the plurality of through holes are arranged in a ring shape and form the ring-shaped air inlet.

5. The air conditioner of claim 2, wherein The shell comprises a back plate arranged opposite to the panel, the heat exchanger is arranged obliquely downward along the direction from the back plate to the panel, the air outlet is arranged on the panel and above the heat exchanger, one side of the heat exchanger is connected with the panel, and the other side of the heat exchanger is connected with the back plate.

6. The air conditioner of claim 5, wherein The heat exchanger comprises a heat exchanger body and two side plates, one side of the heat exchanger body is connected with the panel, the other side of the heat exchanger body is connected with the back plate, the heat exchanger body is located between the two side plates, and the two side plates are respectively arranged between the heat exchanger and the two side plates; and / or, comprising a water pan integrated with the panel and extending along the length direction of the shell, the back plate is provided with a support, one side of the heat exchanger is lapped on the support, and the other side of the heat exchanger is lapped on the water pan.

7. The air conditioner of claim 1, wherein The air conditioner comprises a guide vane, the guide vane is rotationally assembled at the air outlet, and the air conditioner comprises a heating mode and a cooling mode; in the heating mode, the guide vane is arranged obliquely downward to make the gas flow of the air outlet flow obliquely downward, and in the cooling mode, the guide vane is arranged obliquely upward to make the gas flow of the air outlet flow obliquely upward.

8. The air conditioner of claim 1, wherein The centrifugal fan further comprises: a plurality of volutes, each volute is arranged in the lower cavity and connected with the side air inlet and the bottom air inlet, the outlet of each volute is arranged towards the heat exchanger, the plurality of volutes are arranged spaced apart along the length direction of the shell, each volute is provided with an inlet on both sides of the length direction, and the plurality of impellers are respectively rotationally assembled in the plurality of volutes. A motor is arranged in the lower cavity, a driving shaft of the motor is connected with the plurality of wind wheels and is used to drive the plurality of wind wheels to rotate, and the motor is located between two adjacent volutes.

9. The air conditioner of claim 8, wherein The shell comprises oppositely arranged front and back plates, the support frame is integrated with the back plate, the gland is detachably mounted on the support frame, and the motor is assembled in a space surrounded by the support frame and the gland. The bearing frame is integrated with the back plate of the shell, and the bearing frame is used to mount a bearing assembled with the driving shaft of the motor.

10. The air conditioner according to any one of claims 1 to 9, wherein The side air inlet and the bottom air inlet are each provided with a filter screen.

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