Fresh air device, air conditioner indoor unit and air conditioner

Abstract

The present invention discloses a fresh air device, an air conditioner indoor unit and an air conditioner, wherein the fresh air device comprises an air duct shell and a turbocharged fan; the air duct shell is provided with an air flow channel and a fresh air inlet, an indoor air inlet and an air outlet connected to the air flow channel; the turbocharged fan is installed on the air duct shell, the air inlet end of the turbocharged fan is connected to the fresh air inlet and the indoor air inlet, the air outlet end of the turbocharged fan is connected to the air outlet, and the turbocharged fan is used to drive the outdoor air flow to enter the air flow channel from the fresh air inlet and blow out through the air outlet, and drive the indoor air flow to enter the air flow channel from the indoor air inlet and blow out through the fresh air inlet. The fresh air device of the present invention has a simple structure and occupies a small space. It only needs to open a perforation on the wall, which can save labor costs and reduce the degree of damage to the wall.

Description

Technical Field

[0001] The invention relates to the field of air conditioning, and in particular to a fresh air device, an air conditioner indoor unit and an air conditioner. Background Art

[0002] The existing air conditioning fresh air function is generally driven by a centrifugal fan. If both fresh air and exhaust functions are required, a double-pipe structure with one suction and one exhaust is required. The double-pipe structure is complicated to install and easily damages the wall where the user installs it. It also has a complex structure and occupies a large space overall.

[0003] The above contents are only used to assist in understanding the technical solution of the invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The main purpose of the present invention is to provide a fresh air device, aiming to provide a fresh air device with a simple structure, small space occupation, and capable of realizing fresh air and exhaust air functions.

[0005] To achieve the above-mentioned purpose, the fresh air device proposed by the present invention includes an air duct shell and a turbocharger fan:

[0006] The air duct shell is provided with an air flow channel and a fresh air inlet, an indoor air inlet and an air outlet connected to the air flow channel;

[0007] A turbocharged fan is installed on the air duct shell, the air inlet end of the turbocharged fan is connected to the fresh air inlet and the indoor air inlet, the air outlet end of the turbocharged fan is connected to the air outlet, and the turbocharged fan is used to drive the outdoor air flow from the fresh air inlet into the air flow channel and blow it out through the air outlet, and drive the indoor air flow from the indoor air inlet into the air flow channel and blow it out through the fresh air inlet.

[0008] In one embodiment, the turbocharged fan includes a volute, which is provided with an air flow inlet and an air flow outlet, the air duct shell includes an outlet duct and an inlet duct that are connected to each other, the inlet end of the outlet duct is connected to the air flow outlet, the inlet duct is connected to the air flow inlet and the outlet end of the outlet duct, the outlet duct is provided with the air outlet, and the inlet duct is provided with the fresh air inlet and the indoor air inlet.

[0009] In one embodiment, the air outlet duct is arranged around the outer circumference of the volute, and the air inlet duct is provided with the indoor air inlet corresponding to the air flow inlet.

[0010] In one embodiment, the air inlet duct extends along the axis of the turbocharger fan.

[0011] In one embodiment, at least two air outlets arranged at intervals are provided between the air inlet end and the air outlet end of the air outlet duct.

[0012] In one embodiment, the fresh air device also includes an air outlet switch door, a first air inlet switch door and a second air inlet switch door. The air outlet switch door can be movably installed on the air outlet to open and close the air outlet. The first air inlet switch door can be movably installed on the indoor air inlet to open and close the indoor air inlet. The second air inlet switch door can be movably installed on the air inlet duct, and on the air inlet flow path of the air inlet duct, the indoor air inlet is located downstream of the fresh air inlet. The second air inlet switch door is located between the connecting point between the air outlet duct and the air inlet duct and the indoor air inlet, so as to block and conduct the fresh air inlet and the air flow inlet.

[0013] In one embodiment, the air outlet includes a first air outlet, which is opened on a side of the air outlet duct adjacent to the air flow outlet, and the air outlet switch door includes a first air outlet switch door, which is movably installed on the first air outlet for opening and closing the first air outlet, and when the first air outlet switch door opens the first air outlet, it is used to separate the airflow in the air outlet duct so that part of the airflow blown out of the air flow outlet is blown out by the first air outlet, and part of it flows to the side of the air outlet duct away from the air flow outlet.

[0014] In one embodiment, the air outlet also includes a second air outlet, which is opened on a side of the air outlet duct away from the air flow outlet, and the air outlet switch door also includes a second air outlet switch door, which is movably installed on the second air outlet for opening and closing the second air outlet, and when the second air outlet switch door opens the second air outlet, it is used to block the outlet airflow in the air outlet duct downstream of the second air outlet in the air outlet direction.

[0015] In one embodiment, the turbocharged fan is a turbocharged centrifugal fan, which includes a turbine and a fairing arranged on the outer periphery of the turbine, one end of the fairing forms an air inlet end of the turbocharged centrifugal fan, and the surrounding side of the fairing forms an air outlet end of the turbocharged centrifugal fan.

[0016] In one embodiment, the turbine includes a hub and a plurality of blades arranged on the outer periphery of the hub, the plurality of blades are arranged at intervals along the circumference of the hub, and the inner diameter of the hub is gradually increased from the side close to the air inlet end of the air guide cover to the side away from the air inlet end of the air guide cover.

[0017] In one embodiment, a gas outlet is provided on the outer peripheral wall of the air deflector, and the gas outlet extends in a spiral shape around the axis of the air deflector from an air inlet end away from the air deflector to an air inlet end close to the air deflector.

[0018] The present invention further provides an air conditioner indoor unit, comprising a fresh air device, wherein the fresh air device comprises an air duct housing and a turbocharger fan:

[0019] The air duct shell is provided with an air flow channel and a fresh air inlet, an indoor air inlet and an air outlet connected to the air flow channel;

[0020] A turbocharged fan is installed on the air duct shell, the air inlet end of the turbocharged fan is connected to the fresh air inlet and the indoor air inlet, the air outlet end of the turbocharged fan is connected to the air outlet, and the turbocharged fan is used to drive the outdoor air flow from the fresh air inlet into the air flow channel and blow it out through the air outlet, and drive the indoor air flow from the indoor air inlet into the air flow channel and blow it out through the fresh air inlet.

[0021] In one embodiment, the air conditioner indoor unit includes a main unit and a sub-unit, the main unit includes an indoor heat exchange module, the fresh air device is installed on the main unit, the sub-unit can be detachably connected to the main unit, and when the sub-unit is separated from the main unit, the sub-unit can work independently.

[0022] In one embodiment, the main unit is formed with a accommodating cavity and a fresh air outlet connected to the accommodating cavity, the sub-unit can be detachably installed in the accommodating cavity, the fresh air device is installed in the accommodating cavity, and the air outlet of the fresh air device is connected to the fresh air outlet.

[0023] In one embodiment, the air conditioner indoor unit also includes an installation structure, which is installed in the accommodating cavity and divides the accommodating cavity into a first installation cavity and a second installation cavity. The fresh air device is installed in the installation structure and is located in the first installation cavity. The sub-unit can be detachably installed in the second installation cavity.

[0024] The present invention further provides an air conditioner, comprising an air conditioner outdoor unit and an air conditioner indoor unit connected by a refrigerant pipe, wherein the air conditioner indoor unit comprises a fresh air device, and the fresh air device comprises an air duct housing and a turbocharger fan:

[0025] The air duct shell is provided with an air flow channel and a fresh air inlet, an indoor air inlet and an air outlet connected to the air flow channel;

[0026] A turbocharged fan is installed on the air duct shell, the air inlet end of the turbocharged fan is connected to the fresh air inlet and the indoor air inlet, the air outlet end of the turbocharged fan is connected to the air outlet, and the turbocharged fan is used to drive the outdoor air flow from the fresh air inlet into the air flow channel and blow it out through the air outlet, and drive the indoor air flow from the indoor air inlet into the air flow channel and blow it out through the fresh air inlet.

[0027] The fresh air device of the present invention adopts a turbocharged fan, and an air flow channel and a fresh air inlet, an indoor air inlet and an air outlet connected to the air flow channel are arranged on the air duct shell, and the turbocharged fan is installed on the air duct shell, the air inlet end of the turbocharged fan is connected to the fresh air inlet and the indoor air inlet, and the air outlet end of the turbocharged fan is connected to the air outlet, so that the turbocharged fan is used to drive the outdoor air flow from the fresh air inlet into the air flow channel and blow out through the air outlet, and drive the indoor air flow from the indoor air inlet into the air flow channel and blow out through the fresh air inlet. In this way, the fresh air device adopts a turbocharged fan, and its air flow inlet area is small and the suction force is greater, which can meet the characteristics of pipeline air outlet and small area air inlet, so that the overall space occupied by the fresh air device is smaller. By setting up a fresh air inlet connected to the outdoors and a turbocharger fan, the fresh air device can have both fresh air and exhaust functions. It has a simple structure and occupies a small space. Only a hole needs to be opened on the wall, which can save labor costs and reduce the degree of damage to the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0029] Figure 1 This is a structural schematic diagram of an embodiment of a fresh air device of the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure of the fresh air device from another angle;

[0031] Figure 3 for Figure 1 A schematic diagram of the front view of the structure of the medium fresh air device;

[0032] Figure 4 for Figure 3 A schematic cross-sectional view of the structure along the middle line AA, wherein the fresh air device is in the fresh air mode;

[0033] Figure 5 for Figure 3 A schematic cross-sectional view of another embodiment along the middle line AA, wherein the fresh air device is in exhaust mode;

[0034] Figure 6 for Figure 3 A schematic cross-sectional view of the structure along the middle line BB, wherein the fresh air device is in the fresh air mode;

[0035] Figure 7 for Figure 3 A schematic cross-sectional view of another embodiment along the middle line BB, wherein the fresh air device is in exhaust mode;

[0036] Figure 8 It is a structural schematic diagram of an embodiment of a turbocharged fan of a fresh air device of the present invention;

[0037] Fig. 9 for Figure 8 A schematic diagram of the structure of the turbocharged fan from another angle;

[0038] Fig.10 for Figure 8 A schematic diagram of a partially exploded structure of a turbocharger fan;

[0039] Fig.11 It is a structural schematic diagram of an embodiment of an air conditioner indoor unit of the present invention;

[0040] Fig.12 for Fig.11 A schematic diagram of the structure of the indoor unit of the air conditioner in another state;

[0041] Fig.13 for Fig.11 A schematic diagram of the structure of an indoor unit of an air conditioner, wherein the slave unit is separated from the main unit;

[0042] Fig.14 for Fig.11 Schematic diagram of the partially exploded structure of the air conditioner indoor unit.

[0043] Description of Figure Numbers:

[0044]

[0045] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] It should be noted that if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B.

[0047] The present invention proposes a fresh air device, which can be used alone or installed in an air conditioner, a purifier, an air machine and other equipment. The air conditioner can be a split air conditioner, such as a floor-standing air conditioner, a wall-mounted air conditioner, or an integrated air conditioner, such as a window air conditioner, a mobile air conditioner, etc. The fresh air device can introduce outdoor fresh air into the room, and can also discharge indoor polluted air to the outside. The specific structure of the fresh air device is described in detail below.

[0048] In the embodiment of the present invention, Figures 1 to 7 As shown, the fresh air device 100 includes an air duct housing 110 and a turbocharged fan 120; the air duct housing 110 is provided with an air flow channel 111 and a fresh air inlet 112, an indoor air inlet 113 and an air outlet 114 connected to the air flow channel 111. The turbocharged fan 120 is installed on the air duct housing 110, the air inlet end of the turbocharged fan 120 is connected to the fresh air inlet 112 and the indoor air inlet 113, and the air outlet end of the turbocharged fan 120 is connected to the air outlet 114. The turbocharged fan 120 is used to drive the outdoor air flow from the fresh air inlet 112 into the air flow channel 111 and blow it out through the air outlet 114, and drive the indoor air flow from the indoor air inlet 113 into the air flow channel 111 and blow it out through the fresh air inlet 112.

[0049] In this embodiment, the shape of the air duct shell 110 can be selected and designed according to actual use requirements. For example, the air duct shell 110 can be in a long strip, annular, tubular or combined shape, etc., which is not specifically limited here. The turbocharged fan 120 can be installed entirely outside the air duct shell 110, or entirely inside the air duct shell 110, or partially inside the air duct shell 110 and partially outside the air duct shell 110. The air duct shell 110 and the turbocharged fan 120 can be connected by means of snap-on, splicing, welding, etc. The air inlet end of the turbocharged fan 120 is connected with the fresh air inlet 112 and the indoor air inlet 113. The air inlet end of the turbocharged fan 120 can be arranged in the air duct shell 110 to realize the communication between the air inlet end of the turbocharged fan 120 and the fresh air inlet 112 and the indoor air inlet 113 through the air flow channel 111. Of course, the air inlet of the turbocharged fan 120 can also be connected to the fresh air inlet 112 and the indoor air inlet 113 by other means, such as duct connection. The air outlet of the turbocharged fan 120 is connected to the air outlet 114, which can be achieved by arranging the air outlet of the turbocharged fan 120 in the air duct shell 110, or docking the air outlet of the turbocharged fan 120 with the air duct shell 110, so as to achieve the air outlet of the turbocharged fan 120 and the air outlet 114 through the air flow channel 111. Of course, the air outlet of the turbocharged fan 120 can also be connected to the air outlet 114 by other means, such as duct connection.

[0050] It should be noted that the turbocharged fan 120 means that the air in the volute 121 is squeezed by the rotation of the turbine 122, so that the airflow flows out after being pressurized, so that the turbine 122 can compress more air into the fan. The fresh air device 100 adopts a turbocharged fan 120, and its airflow inlet 1211 has a small area and a greater suction force, which can meet the characteristics of duct air outlet and small area air intake, so that the overall space occupied by the fresh air device 100 is smaller. The turbocharged fan 120 can be a turbocharged centrifugal fan, a turbocharged diagonal flow fan, and of course, it can also be other types of fans.

[0051] The fresh air inlet 112 is connected to the outside, and the indoor air inlet 113 and the air outlet 114 are connected to the inside. The shapes of the fresh air inlet 112, the indoor air inlet 113, and the air outlet 114 can be selected and designed according to actual use requirements, for example, they can be circular, elliptical, rectangular, etc. The switching of the fresh air mode and the exhaust mode of the fresh air device 100 can be achieved by setting a switch door at the fresh air inlet 112, the indoor air inlet 113, and the air outlet 114. When the fresh air device 100 is in the fresh air mode, the fresh air inlet 112 and the air outlet 114 are opened, the indoor air inlet 113 is closed, and the turbocharger fan 120 drives the outdoor air flow from the fresh air inlet 112 into the air flow channel 111 and blown out through the air outlet 114. When the fresh air device 100 is in the exhaust mode, the indoor air inlet 113 and the fresh air inlet 112 are opened, the air outlet 114 is closed, and the turbocharger fan 120 drives the indoor air flow from the indoor air inlet 113 into the air flow channel 111 and blows out through the fresh air inlet 112.

[0052] Of course, the turbocharged fan 120 can also be installed on the air duct housing 110 in an integrally movable manner, and the turbocharged fan 120 can be switched to correspond to the fresh air inlet 112 or the indoor air inlet 113 to realize switching between the fresh air mode and the exhaust mode of the fresh air device 100. For example, when the fresh air device 100 is in the fresh air mode, the turbocharged fan 120 is switched to connect the air inlet 112 with the fresh air inlet 112 and connect the air outlet 114 with the air outlet 114, so that the turbocharged fan 120 drives the outdoor air flow from the fresh air inlet 112 into the air flow channel 111 and blows out through the air outlet 114. When the fresh air device 100 is in the exhaust mode, by switching the turbocharger fan 120 so that the air inlet end is connected to the indoor air inlet 113 and the air outlet end is connected to the fresh air inlet 112, the turbocharger fan 120 drives the indoor polluted air to enter the air flow channel 111 through the indoor air inlet 113 and blow it out through the fresh air inlet 112.

[0053] The fresh air device 100 of the present invention adopts a turbocharged fan 120, and an air flow channel 111 and a fresh air inlet 112, an indoor air inlet 113 and an air outlet 114 connected to the air flow channel 111 are set on the air duct shell 110, and the turbocharged fan 120 is installed on the air duct shell 110, the air inlet end of the turbocharged fan 120 is connected to the fresh air inlet 112 and the indoor air inlet 113, and the air outlet end of the turbocharged fan 120 is connected to the air outlet 114, so that the turbocharged fan 120 is used to drive the outdoor air flow to enter the air flow channel 111 from the fresh air inlet 112 and blow it out through the air outlet 114, and drive the indoor air flow to enter the air flow channel 111 from the indoor air inlet 113 and blow it out through the fresh air inlet 112. In this way, the fresh air device 100 adopts a turbocharged fan 120, whose air inlet 1211 has a small area and a greater suction force, which can meet the characteristics of duct air outlet and small area air intake, so that the overall space occupied by the fresh air device 100 is smaller. By providing a fresh air inlet 112 connected to the outside and a turbocharged fan 120, the fresh air device 100 can have the functions of introducing fresh air and exhausting indoor dirty air at the same time. It has a simple structure and occupies a small space. Only one hole needs to be opened on the wall, which can save labor costs and reduce the degree of damage to the wall.

[0054] For more details, please refer to Figures 8 to 10 The turbocharged fan 120 includes a volute 121, which is provided with an air flow inlet 1211 and an air flow outlet 1212. The air duct shell 110 includes an air outlet duct 115 and an air inlet duct 116 which are connected to each other. The air inlet end of the air outlet duct 115 is connected to the air flow outlet 1212. The air inlet duct 116 is connected to the air flow inlet 1211 and the air outlet end of the air outlet duct 115. The air outlet duct 115 is provided with an air outlet 114. The air inlet duct 116 is provided with a fresh air inlet 112 and an indoor air inlet 113.

[0055] In this embodiment, the volute 121 can be specifically formed by splicing an upper volute and a lower volute. The air inlet duct 116 is connected to the air inlet 1211 and the air outlet end of the air outlet duct 115, and the air inlet end of the air outlet duct 115 is connected to the air outlet 1212. When the fresh air device 100 is in the fresh air mode, the turbocharger fan 120 drives the outdoor fresh air to enter the air inlet duct 116 from the fresh air inlet 112, and then flows into the volute 121 from the air inlet 1211, and flows into the air outlet duct 115 through the air outlet 1212, and then blown out from the air outlet 114 on the air outlet duct 115. When the fresh air device 100 is in the exhaust mode, the turbocharger fan 120 drives the indoor air flow to flow through the indoor air inlet 113 and the air flow inlet 1211, and then flows into the volute 121, and flows out to the air outlet duct 115 through the air outlet 1212, and then flows into the air inlet duct 116, and is discharged to the outside through the fresh air inlet 112. Only one air outlet 114 can be set on the air outlet duct 115, or two or more air outlets 114 can be set. The air outlet duct 115 and the air inlet duct 116 can be integrally formed or separately formed. The shape and arrangement position of the air outlet duct 115 and the air inlet duct 116 can be selected and designed according to actual needs.

[0056] Furthermore, if Figures 1 to 5 As shown, the air outlet duct 115 is arranged around the outer periphery of the volute 121, and the air inlet duct 116 is provided with an indoor air inlet 113 corresponding to the air flow inlet 1211. By making the air outlet duct 115 arranged around the outer periphery of the volute 121, on the one hand, the structure of the entire fresh air device 100 is made more compact, and on the other hand, the air outlet duct 115 is equivalent to extending the air outlet channel of the volute 121, thereby making the air flow from the air flow outlet 1212 of the volute 121 to flow into the air outlet duct 115 more smoothly and with less wind resistance. By making the air inlet duct 116 and the indoor air inlet 113 corresponding to the air flow inlet 1211 of the volute 121, when the fresh air device 100 is in the exhaust mode, the turbocharger fan 120 can directly drive the indoor air flow from the indoor air inlet 113 to the air flow inlet 1211 of the volute 121, thereby reducing wind resistance, making the mode switching of the fresh air device 100 more stable and reliable.

[0057] In combination with the above embodiment in which the air duct housing 110 includes an air outlet duct 115 and an air inlet duct 116 connected to each other, further, please refer to Figure 1 , Figure 2 , Figure 6 and Figure 7The air inlet duct 116 extends along the axis of the turbocharged fan 120. By extending the air inlet duct 116 along the axis of the turbocharged fan 120, the air inlet duct 116 is in a vertical tube shape, and combined with the structure of the horizontal arrangement of the air outlet duct 115 and the volute 121, the horizontal occupied space is reduced and the vertical space is fully utilized, so that the overall structure of the fresh air device 100 is compact and the occupied space is small.

[0058] In one embodiment, if Figures 1 to 5 As shown, at least two air outlets 114 are provided between the air inlet end and the air outlet end of the air outlet duct 115. In the embodiment in which two air outlets 114 are provided on the air outlet duct 115, specifically, the two air outlets 114 can be symmetrically provided along the axis of the turbocharger fan 120. By providing at least two air outlets 114 on the air outlet duct 115, the air volume of the fresh air device 100 in the fresh air mode can be increased, and multi-directional air outlet can be achieved, thereby increasing the air outlet range and the air outlet angle.

[0059] In one embodiment, please refer to Figure 6 and Figure 7 The fresh air device 100 also includes an air outlet switch door, a first air inlet switch door 140 and a second air inlet switch door 150. The air outlet switch door can be movably installed on the air outlet 114 to open and close the air outlet 114. The first air inlet switch door 140 can be movably installed on the indoor air inlet 113 to open and close the indoor air inlet 113. The second air inlet switch door 150 can be movably installed on the air inlet duct 116, and on the air inlet flow path of the air inlet duct 116, the indoor air inlet 113 is located downstream of the fresh air inlet 112. The second air inlet switch door 150 is located between the connecting point between the air outlet duct 115 and the air inlet duct 116 and the indoor air inlet 113, so as to block and conduct the fresh air inlet 112 and the air flow inlet 1211.

[0060] In this embodiment, the air outlet switch door can be movably mounted on the air outlet 114, and can be specifically mounted on the air outlet duct 115. The air outlet switch door can be rotatably mounted on the air outlet 114, or can be slidably mounted on the air outlet 114, as long as it can realize the state of switching between opening the air outlet 114 and closing the air outlet 114. The first air inlet switch door 140 can be movably mounted on the indoor air inlet 113, and can be specifically mounted on the air inlet duct 116. The first air inlet switch door 140 can be rotatably mounted at the indoor air inlet, or can be slidably mounted at the indoor air inlet, as long as it can realize the state of switching between opening the indoor air inlet and closing the indoor air inlet. The second air inlet switch door 150 can be rotatably mounted in the air inlet duct 116, or can be slidably mounted in the air inlet duct 116, as long as it can realize the state of switching between opening the fresh air inlet 112 and closing the fresh air inlet 112. The second air inlet switch door 150 is located between the connection point between the air outlet duct 115 and the air inlet duct 116 and the indoor air inlet 113 to block and connect the fresh air inlet 112 and the air flow inlet 1211. That is, when the second air inlet switch door 150 is closed, it only blocks the air flow of the fresh air inlet 112 from flowing to the air flow inlet 1211 of the volute 121, but does not block the air flow of the air outlet duct 115 from flowing to the fresh air inlet 112.

[0061] Thus, when the fresh air device 100 is in the fresh air mode, the second air inlet switch door 150 and the air outlet switch door are opened, the first air inlet switch door 140 is closed, and the turbocharged fan 120 drives the outdoor air flow from the fresh air inlet 112 into the air inlet duct 116, and flows into the volute 121 of the turbocharged fan 120, and then flows into the air outlet duct 115, and is blown out to the room through the air outlet 114 on the air outlet duct 115. When the fresh air device 100 is in the exhaust mode, the second air inlet switch door 150 and the air outlet switch door are closed, the first air inlet switch door 140 is opened, and the turbocharged fan 120 is used to drive the indoor air flow from the indoor air inlet into the volute 121, flow into the air outlet duct 115, and then flow to the air inlet duct 116, and blow out through the fresh air outlet 220 to exhaust the indoor polluted air.

[0062] By setting the air outlet switch door to selectively open or close the air outlet 114, setting the first air inlet switch door 140 to selectively open or close the indoor air inlet, and setting the second air inlet switch door 150 to selectively open or close the fresh air inlet 112, and by setting the position of the second air inlet switch door 150, the switching of the fresh air mode and the exhaust mode of the fresh air device 100 can be achieved only by controlling the opening or closing of the corresponding switch door. Compared with the structure of switching the fresh air mode and the exhaust mode by switching the position of the turbocharged fan 120, its control method and control structure are simpler, the overall space occupied is small, the required components are few, and the operating noise is small, which is easy to implement.

[0063] Furthermore, if Figure 4 and Figure 5 As shown, the air outlet 114 includes a first air outlet 1141, which is opened on a side of the air outlet duct 115 adjacent to the air flow outlet 1212, and the air outlet switch door includes a first air outlet switch door 131, which is movably installed on the first air outlet 1141 for opening and closing the first air outlet 1141, and when the first air outlet switch door 131 opens the first air outlet 1141, it is used to separate the airflow in the air outlet duct 115, so that part of the airflow blown out of the air flow outlet 1212 is blown out by the first air outlet 1141, and part of it flows to the side of the air outlet duct 115 away from the air flow outlet 1212.

[0064] In this embodiment, the first air outlet switch door 131 can be specifically rotated to switch the state of opening and closing the first air outlet 1141. By making the first air outlet 1141 open on the side of the air outlet 1212 of the air outlet duct 115 adjacent to the volute 121, and when the first air outlet switch door 131 opens the first air outlet 1141, it is used to separate the air flow in the air outlet duct 115. When the fresh air device 100 is in the fresh air mode, part of the air flow blown out of the air outlet 1212 of the volute 121 is blown out from the first air outlet 1141, and part of it flows to the side of the air outlet duct 115 away from the air outlet 1212, and then can flow to the second air outlet 1142, so as to realize multiple air outlets 114 and multiple air outlet directions on the air outlet duct 115, and make the air volume of each air outlet 114 more uniform. It is understandable that in other embodiments, the first air outlet switch door 131 may not separate the air flow in the air outlet duct 115, so that most of the air flow blown out of the air outlet 1212 of the volute 121 is blown out from the first air outlet 1141, and a small part flows to the side of the air outlet duct 115 away from the air outlet 1212 and is blown out from other air outlets 114.

[0065] Based on the above embodiments, please refer to Figure 4 and Figure 5 The air outlet 114 also includes a second air outlet 1142, which is opened on a side of the air outlet duct 115 away from the air flow outlet 1212, and the air outlet switch door also includes a second air outlet switch door 132, which is movably installed on the second air outlet 1142 to open and close the second air outlet 1142, and when the second air outlet switch door 132 opens the second air outlet 1142, it is used to block the outlet airflow in the air outlet duct 115 downstream of the second air outlet 1142 in the air outlet direction.

[0066] In this embodiment, the second air outlet switch door 132 can be specifically rotated to switch the state of opening and closing the second air outlet 1142. The second air outlet 1142 is opened on the side of the air outlet duct 115 away from the air flow outlet 1212, and when the second air outlet switch door 132 opens the second air outlet 1142, the air outlet airflow is blocked in the air outlet duct 115 downstream of the second air outlet 1142 in the air outlet direction. When the fresh air device 100 is in the fresh air mode, the air flow blown out from the air outlet 1212 of the volute 121 is split through the first air outlet switch door 131, with part of it flowing out from the first air outlet 1141 and part of it flowing to the side of the air outlet duct 115 away from the air outlet 1212. Since the second air outlet switch door 132 blocks the outlet air flow in the air outlet duct 115 downstream of the second air outlet 1142 in the air outlet direction, the air flow flowing to the side of the air outlet duct 115 away from the air outlet 1212 can be completely blown out from the second air outlet 1142 without entering the air inlet duct 116.

[0067] By providing the first air outlet 1141 and the second air outlet 1142, the air volume of the entire fresh air device 100 can be increased, and the fresh air supply range and air supply angle can be increased. When the first air outlet switch door 131 opens the first air outlet 1141, the airflow in the air outlet duct 115 is separated, so that part of the airflow blown out of the air outlet 1212 is blown out from the first air outlet 1141, and part of it flows to the side of the air outlet duct 115 away from the air outlet 1212, and when the second air outlet switch door 132 opens the second air outlet 1142, the airflow of the air outlet is blocked in the air outlet duct 115 located downstream of the second air outlet 1142 in the air outlet direction, so that the airflow of the first air outlet 1141 and the second air outlet 1142 can be ensured to be uniform, and the airflow in the air outlet duct 115 in the fresh air mode can be prevented from flowing back into the air inlet duct 116, thereby ensuring the air outlet stability in the fresh air mode.

[0068] In one embodiment, if Figures 8 to 10 As shown, the turbocharged fan 120 is a turbocharged centrifugal fan, which includes a turbine 122 and a guide cover 123 arranged on the outer periphery of the turbine 122, one end of the guide cover 123 forms an air inlet end of the turbocharged centrifugal fan, and the surrounding side of the guide cover 123 forms an air outlet end of the turbocharged centrifugal fan.

[0069] In this embodiment, the turbine 122 of the turbocharged fan 120 is a supercharged centrifugal fan, which has low noise and stable operation. Compared with other fans, the air inlet 1211 can be set smaller under the same air output, which is conducive to reducing the volume of the entire fresh air device 100. The turbocharged centrifugal fan also includes a motor, which is connected to the turbine 122 to drive the turbine 122 to rotate. The air guide 123 is arranged on the outer periphery of the turbine 122. When the turbine 122 rotates, the airflow of the vortex supercharged centrifugal fan is introduced into the air guide 123 from one end of the air guide 123, and the airflow is squeezed between the blades 1222 of the turbine 122, and between the turbine 122 and the air guide 123, so that the airflow flows out from the peripheral side of the air guide 123, and finally flows out from the airflow outlet 1212 of the volute 121.

[0070] For details, please refer to Fig.10 The turbine 122 includes a hub 1221 and a plurality of blades 1222 disposed on the outer periphery of the hub 1221. The plurality of blades 1222 are arranged at intervals along the circumference of the hub 1221. The inner diameter of the hub 1221 is gradually increased from the air inlet end side close to the air guide cover 123 to the air inlet end side away from the air guide cover 123. The inner diameter of the hub 1221 is gradually increased from the air inlet end side close to the air guide cover 123 to the air inlet end side away from the air guide cover 123, which can achieve effective supercharging, thereby increasing the air intake of the entire turbocharged fan 120. Specifically, the plurality of blades 1222 are all three-dimensional twisted blades 1222. Compared with the centrifugal blades 1222 of equal cross-section, the turbocharged fan 120 has a larger air volume and less noise.

[0071] Furthermore, if Fig.10 As shown, the outer peripheral wall of the air deflector 123 is provided with a gas outlet 1231, and the gas outlet 1231 spirally extends around the axis of the air deflector 123 from the air inlet end away from the air deflector 123 to the air inlet end close to the air deflector 123. In this way, the airflow after being pressurized by the blades 1222 between the turbine 122 and the air deflector 123, after flowing out from the gas outlet 1231 of the air deflector 123, is spirally supercharged again, thereby improving the supercharging effect, and the air intake of the entire turbocharged fan 120 can be effectively increased. In other words, compared with other fans, the entire turbocharged fan 120 can have a smaller air intake area while achieving the same air output, thereby reducing the occupied space of the entire fresh air device 100.

[0072] The present invention also provides an air conditioner indoor unit, please refer to Fig.11 and Fig.12The air conditioner indoor unit includes a fresh air device 100. The specific structure of the fresh air device 100 refers to the above embodiment. Since the air conditioner indoor unit adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. The air conditioner indoor unit can be a wall-mounted air conditioner indoor unit, a floor-standing air conditioner indoor unit, etc. The following is an exemplary description taking a floor-standing air conditioner indoor unit as an example.

[0073] In one embodiment, if Figure 12 to Figure 14 As shown, the air conditioner indoor unit includes a main unit 200 and a sub-unit 300. The main unit 200 includes an indoor heat exchange module. The fresh air device 100 is installed on the main unit 200. The sub-unit 300 can be detachably connected to the main unit 200, and when the sub-unit 300 is separated from the main unit 200, the sub-unit 300 can work independently.

[0074] In this embodiment, the overall shape of the host 200 and the sub-machine 300 can be cylindrical, elliptical, square or other shapes, and the shapes of the host 200 and the sub-machine 300 can be the same or different. The specific selection and design can be made according to the actual use requirements, and no limitation is made here. The host 200 extends as a whole in the up and down direction, and the host 200 and the sub-machine 300 can be set with equal cross-section or variable cross-section in the up and down direction. The indoor heat exchange module has a heat exchange air duct. The indoor heat exchange module is used to exchange heat for the air flow flowing through the heat exchange air duct to achieve cooling or heating. The indoor heat exchange module can have only cooling function, or it can have cooling and heating functions at the same time. It can be understood that the host 200 also includes a heat exchange air inlet and a heat exchange air outlet connected to the heat exchange air duct. The heat exchange duct is provided with a heat exchange component, which includes a heat exchanger and a heat exchange fan. The heat exchange fan drives the airflow from the heat exchange air inlet into the heat exchange duct, and blows it out from the heat exchange air outlet after heat exchange in the heat exchanger, thereby achieving indoor cooling or heating. Among them, the indoor heat exchange module also includes refrigerant pipes, compressors and other structures. Its specific structure can refer to the existing technology of the floor-standing air conditioner indoor unit, which will not be repeated here.

[0075] The sub-machine 300 can be detachably connected to the main machine 200, and the sub-machine 300 can be connected to the inside of the main machine 200, such as setting a receiving chamber 210 inside the main machine 200, so that the sub-machine 300 is installed in the receiving chamber 210, and the receiving chamber 210 can be located at the upper part, the middle part or the lower part of the main machine 200. The sub-machine 300 can also be connected to the outside of the main machine 200, such as splicing at the bottom, the top, the peripheral side, etc. of the main machine 200. The connection between the sub-machine 300 and the main machine 200 can be a structural connection, for example, connected by a snap connection, a magnetic connection, a plug-in connection, etc. It can be understood that the sub-machine 300 can be separated from the main machine 200 by manual disassembly by the user, and the sub-machine 300 can also be controlled by the control device to actively separate from the main machine 200 without manual operation by the user. When the sub-machine 300 is separated from the main machine 200, the sub-machine 300 can be autonomously circulated and moved indoors to meet the needs of the entire indoor air treatment and make the air supply uniform throughout the space. The user can also manually move the slave 300 to the desired position in the room or move the slave 300 autonomously to a certain position, such as an area where many people gather, so as to meet the fixed-point air supply in a certain area, realize long-distance, fixed-point, and directional air supply, and improve the air treatment effect. Compared with moving the entire floor-standing air conditioner indoor unit, the movement of the slave 300 is more flexible and convenient, so as to meet the different usage needs of users. And the slave 300 can relay the air flow blown out of the heat exchange outlet of the host 200, so that the air supply distance is farther and the air supply range is wider.

[0076] The air conditioner indoor unit of the present invention enables the sub-unit 300 to be detachably connected to the main unit 200, and enables the sub-unit 300 to work independently from the main unit 200. While ensuring rapid heat exchange in the entire room, the sub-unit 300 can be separated from the main unit 200 to realize mobile air supply throughout the house, etc., and the air supply demand of a certain area or the entire area in the room can be flexibly adjusted through the sub-unit 300, so that the entire floor-standing air conditioner indoor unit is highly flexible and can meet the different air supply needs of users. And the sub-unit 300 can relay the heat exchange airflow blown out by the main unit 200, so as to achieve long-distance and multi-directional air supply. At the same time, while enabling the floor-standing air conditioner indoor unit to deliver air in multiple directions, long distances, and throughout the house, the sub-unit 300 is connected to the main unit 200, so as to realize the storage integration of multiple machines, save room space, and improve space utilization.

[0077] In one embodiment, please refer to Fig.12 and Fig.13 The main unit 200 is formed with a accommodating chamber 210 and a fresh air outlet 220 connected to the accommodating chamber 210 , the sub-unit 300 can be detachably installed in the accommodating chamber 210 , the fresh air device 100 is installed in the accommodating chamber 210 , and the air outlet 114 of the fresh air device 100 is connected to the fresh air outlet 220 .

[0078] In this embodiment, the accommodating chamber 210 can be located at the upper part, middle part or lower part of the main unit 200, and the accommodating chamber 210 can be located below or above the heat exchange air duct. Of course, in a certain specific model, the accommodating chamber 210 and the heat exchange air duct can also be arranged side by side in the horizontal direction. Generally, the shape of the accommodating chamber 210 is adapted to the shape of the sub-machine 300, that is, when not in operation, the sub-machine 300 is completely accommodated in the accommodating chamber 210. Of course, it is also possible to make part of the sub-machine 300 located in the accommodating chamber 210 and part of it located outside the accommodating chamber 210, that is, part of it is exposed to the main unit 200. The accommodating chamber 210 can be formed by partially hollowing out the main unit 200. The accommodating chamber 210 can also be formed by enclosing the support arm on the main unit 200. By at least partially arranging the sub-machine 300 in the accommodating chamber 210 of the main unit 200, it is easier to maintain the overall consistency of the two after connection than splicing the sub-machine 300 as a whole with the main unit 200, thereby improving the user experience.

[0079] The sub-machine 300 can be detachably installed in the accommodating cavity 210, and the sub-machine 300 can be directly placed in the accommodating cavity 210 and separated from the accommodating cavity 210 by rolling, sliding, etc. The sub-machine 300 can also be installed in the accommodating cavity 210 by limiting the position of the limiting structure, such as being connected to the accommodating cavity 210 by means of a snap connection, a magnetic connection, etc. There are many ways in which the sub-machine 300 is installed in the accommodating cavity 210 and detached from the accommodating cavity 210, which are not listed here one by one. The sub-machine 300 can be manually moved out of the accommodating cavity 210 by the user, thereby making the sub-machine 300 detached from the main machine 200. The sub-machine 300 can also be controlled to move out of the main machine 200 autonomously. In this case, the accommodating cavity 210 needs to be set at the bottom of the main machine 200 so that the sub-machine 300 can move out of the accommodating cavity 210 autonomously. By installing the fresh air device 100 in the accommodating chamber 210, the space in the accommodating chamber 210 is fully utilized, so that the fresh air device 100 does not need to occupy the space in the heat exchange air duct, thereby making the overall layout more reasonable. Of course, the host 200 is also provided with an air outlet connected to the accommodating chamber 210, and the fresh air inlet 112 of the fresh air device 100 is connected to the outside through an air duct, and the air duct passes through the air outlet of the host 200 to extend to the outside. The fresh air outlet 114 can be set on the front side of the host 200, or on the left and right sides of the host 200, and the position, number and shape of the fresh air outlet 220 can be selected according to actual needs. In the fresh air mode, the fresh air device 100 introduces the outdoor airflow into the fresh air device 100 from the fresh air inlet 112, and blows it into the room from the fresh air outlet 220 to achieve the introduction of fresh air into the room.

[0080] Furthermore, if Fig.14As shown, the air conditioner indoor unit also includes an installation structure 400, which is installed in the accommodating cavity 210 and divides the accommodating cavity 210 into a first installation cavity 211 and a second installation cavity 212. The fresh air device 100 is installed in the installation structure 400 and is located in the first installation cavity 211. The sub-unit 300 can be detachably installed in the second installation cavity 212.

[0081] In this embodiment, the mounting structure 400 can be detachably mounted in the accommodating chamber 210 by means of snap connection, plug connection, screw connection, magnetic connection, etc. The accommodating chamber 210 is divided into a first mounting chamber 211 and a second mounting chamber 212 by the mounting structure 400. On the one hand, the mounting chamber of the sub-machine 300 and the mounting chamber of the fresh air device 100 are separated to achieve the positioning installation of the two and avoid mutual influence. On the other hand, after the sub-machine 300 is moved out of the second mounting chamber 212, the overall consistency of the first mounting chamber 211 can be ensured. The fresh air device 100 can be mounted on the mounting structure 400 by means of snap connection, direct placement, etc. Specifically, the mounting structure 400 includes a fresh air panel and a mounting frame connected to each other, the fresh air panel extends in the up-down direction, the mounting frame is mounted on the upper end of the fresh air panel, the turbocharged fan 120 is mounted in the mounting frame, and the fresh air panel is mounted in the accommodating chamber 210 to divide the accommodating chamber 210 into two in the horizontal direction. In the embodiment where the fresh air device 100 includes an air inlet duct 116 and an air outlet duct 115, the fresh air panel divides the accommodating chamber 210 into two front and rear chambers, the air inlet duct 116 is located in the rear chamber, the air outlet duct 115 is located in the installation frame, and the sub-unit 300 can be installed separately in the front chamber. In this way, the fresh air panel and the installation frame can completely cover the fresh air device 100, and when the sub-unit 300 is separated from the accommodating chamber 210, the overall consistency of the accommodating chamber 210 can be maintained, thereby making the appearance more complete and beautiful. In some embodiments, a switch door can be set to open or close the opening of the accommodating chamber 210.

[0082] The present invention also proposes an air conditioner, which includes an air conditioner outdoor unit and an air conditioner indoor unit connected by a refrigerant pipe. The specific structure of the fresh air device 100 refers to the above-mentioned embodiment. Since this air conditioner adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0083] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A fresh air device, characterized in that: include: An air duct shell, wherein the air duct shell is provided with an air flow channel and a fresh air inlet, an indoor air inlet and an air outlet connected to the air flow channel; as well as A turbocharged fan is installed on the air duct housing, the air inlet end of the turbocharged fan is connected to the fresh air inlet and the indoor air inlet, the air outlet end of the turbocharged fan is connected to the air outlet, the turbocharged fan is used to drive outdoor airflow from the fresh air inlet into the airflow channel and blow it out through the air outlet, and drive indoor airflow from the indoor air inlet into the airflow channel and blow it out through the fresh air inlet; The turbocharged fan comprises a volute, an air flow outlet is provided on the volute, the air duct housing comprises an air outlet duct, an air inlet end of the air outlet duct is connected to the air flow outlet, and at least two air outlets are provided between the air inlet end and the air outlet end of the air outlet duct. The fresh air device also includes an air outlet switch door, the air outlet includes a first air outlet and a second air outlet, the first air outlet is opened on a side of the air outlet duct adjacent to the air flow outlet, and the second air outlet is opened on a side of the air outlet duct away from the air flow outlet, the air outlet switch door includes a second air outlet switch door, the second air outlet switch door is rotatably installed on the second air outlet for opening and closing the second air outlet, and when the second air outlet switch door opens the second air outlet, it is used to block the outlet airflow in the air outlet duct located downstream of the second air outlet in the air outlet direction.

2. The fresh air device according to claim 1, characterized in that: The volute is also provided with an air flow inlet, and the air duct shell also includes an air inlet duct connected to the air outlet duct, the air inlet duct is connected to the air flow inlet and the air outlet end of the air outlet duct, and the air inlet duct is provided with the fresh air inlet and the indoor air inlet.

3. The fresh air device according to claim 2, characterized in that: The air outlet duct is arranged around the outer circumference of the volute, and the air inlet duct is provided with the indoor air inlet corresponding to the air flow inlet.

4. The fresh air device according to claim 3, characterized in that: The air inlet duct extends along the axis of the turbocharger fan.

5. The fresh air device according to claim 3, characterized in that: The fresh air device also includes a first air inlet switch door and a second air inlet switch door. The first air inlet switch door can be movably installed on the indoor air inlet to open and close the indoor air inlet. The second air inlet switch door can be movably installed on the air inlet duct, and on the air inlet flow path of the air inlet duct, the indoor air inlet is located downstream of the fresh air inlet. The second air inlet switch door is located between the connecting point between the air outlet duct and the air inlet duct and the indoor air inlet to block and conduct the fresh air inlet and the air flow inlet.

6. The fresh air device according to claim 5, characterized in that: The air outlet switch door also includes a first air outlet switch door, which can be movably installed on the first air outlet for opening and closing the first air outlet, and when the first air outlet switch door opens the first air outlet, it is used to separate the airflow in the air outlet duct so that part of the airflow blown out of the air outlet is blown out from the first air outlet, and part of it flows to the side of the air outlet duct away from the air outlet.

7. The fresh air device according to any one of claims 1 to 6, characterized in that: The turbocharged fan is a turbocharged centrifugal fan, which includes a turbine and a guide cover arranged on the outer periphery of the turbine, one end of the guide cover forms the air inlet end of the turbocharged centrifugal fan, and the surrounding side of the guide cover forms the air outlet end of the turbocharged centrifugal fan.

8. The fresh air device according to claim 7, characterized in that: The turbine includes a hub and a plurality of blades arranged on the outer periphery of the hub. The plurality of blades are arranged at intervals along the circumference of the hub. The inner diameter of the hub is gradually increased from the side close to the air inlet end of the air deflector to the side away from the air inlet end of the air deflector.

9. The fresh air device according to claim 8, characterized in that: The outer peripheral wall of the air deflector is provided with a gas outlet, and the gas outlet extends in a spiral shape around the axis of the air deflector from the air inlet end away from the air deflector to the air inlet end close to the air deflector.

10. An air conditioner indoor unit, characterized in that: It comprises the fresh air device as described in any one of claims 1 to 9.

11. The air conditioner indoor unit according to claim 10, characterized in that: The air conditioner indoor unit includes a main unit and a sub-unit, the main unit includes an indoor heat exchange module, the fresh air device is installed on the main unit, the sub-unit can be detachably connected to the main unit, and when the sub-unit is separated from the main unit, the sub-unit can work independently.

12. The air conditioner indoor unit according to claim 11, characterized in that: The main unit is formed with a accommodating cavity and a fresh air outlet communicated with the accommodating cavity, the sub-unit is detachably installed in the accommodating cavity, the fresh air device is installed in the accommodating cavity, and the air outlet of the fresh air device is communicated with the fresh air outlet.

13. The air conditioner indoor unit according to claim 12, characterized in that: The air conditioner indoor unit also includes an installation structure, which is installed in the accommodating cavity and divides the accommodating cavity into a first installation cavity and a second installation cavity. The fresh air device is installed in the installation structure and is located in the first installation cavity. The sub-unit can be detachably installed in the second installation cavity.

14. An air conditioner, characterized in that: It comprises an air-conditioning outdoor unit and an air-conditioning indoor unit as described in any one of claims 10 to 13.

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