Vertical air conditioner indoor unit

Abstract

The utility model relates to a vertical air conditioner indoor unit, which belongs to the technical field of air conditioners and comprises a shell, a first air duct, a first fan, a second air duct and a second fan, and the first air duct is communicated with a first indoor air inlet and an indoor air outlet; the first fan is arranged in the first air duct, the first air inlet communicates with the first indoor air inlet, and the first air outlet communicates with the indoor air outlet; the indoor heat exchanger is arranged in the shell and close to the second indoor air inlet. The second air channel communicates with the first air channel and the second indoor air inlet. The second fan is arranged in the machine shell, the second air inlet communicates with the second indoor air inlet, the second air outlet communicates with the first air channel, heat exchange airflow in the second air channel flows into the first air channel to be mixed with indoor airflow in the first air channel, the mixed airflow is output through the indoor air outlet, and the problem that the air outlet temperature is not suitable is effectively solved. And moreover, the refrigeration and heating capacity cannot be attenuated, and the comfortable experience of a user is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to a vertical air conditioner indoor unit. Background Art

[0002] Air conditioners are an electrical product widely used in people's lives. Air conditioners play an important role in regulating indoor temperature and can provide users with a healthy and comfortable indoor environment.

[0003] The indoor unit of the vertical air conditioner includes a shell, an indoor heat exchanger, and a fan. The shell is provided with an air inlet and an air outlet. The indoor heat exchanger and the fan are arranged inside the shell. The heat exchanger can exchange heat with the air in the shell, and the heat exchange airflow is output to the room from the air outlet.

[0004] The traditional vertical air conditioner indoor unit has low air outlet temperature when cooling and high air outlet temperature when heating. When the air blows on the user, it will cause discomfort and lead to air conditioning disease in the long run. To solve this problem, some existing technologies adopt measures such as no wind feeling and direct blowing prevention, and some adopt measures such as frequency limiting. Although they have a certain effect, they will lead to a decrease in cooling and heating capacity, which is not conducive to the rapid arrival of the set temperature, or cause indoor temperature fluctuations and increased temperature gradients. Utility Model Content

[0005] The utility model solves one of the technical problems in the related art at least to a certain extent.

[0006] To this end, the present application aims to provide a vertical air-conditioning indoor unit, which introduces indoor natural wind through the first air duct, and mixes the natural wind with the air-conditioning heat exchange air in the second air duct, effectively improving the problem of uncomfortable air outlet temperature without causing a decrease in cooling and heating capacity, thereby greatly improving the user's comfort experience.

[0007] In order to achieve the above object, the utility model provides a vertical air conditioner indoor unit, comprising:

[0008] A shell, wherein the top and bottom ends of the shell are two opposite ends in the length direction of the shell, and the shell is provided with a first indoor air inlet, an indoor air outlet, and a second indoor air inlet;

[0009] A first air duct, the first air duct is arranged in the housing, and the first air duct is connected with the first indoor air inlet and the indoor air outlet;

[0010] A first fan, the first fan is arranged in the first air duct, the first fan has a first air inlet and a first air outlet, the first air inlet is connected to the first indoor air inlet, and the first air outlet is connected to the indoor air outlet;

[0011] an indoor heat exchanger, the indoor heat exchanger being arranged in the housing and close to the second indoor air inlet, the indoor heat exchanger being used for performing heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow;

[0012] a second air duct, the second air duct being arranged in the shell and spaced apart from the first air duct along the length direction of the shell, the second air duct being located on a side of the indoor heat exchanger away from the second indoor air inlet, the second air duct being connected to the first air duct and the second indoor air inlet;

[0013] The second fan is arranged in the shell, the second fan has a second air outlet and a second air inlet, the second air inlet is connected to the second indoor air inlet, the second air outlet is connected to the first air duct, the heat exchange airflow in the second air duct flows into the first air duct and mixes with the indoor airflow in the first air duct, and the mixed airflow is output through the indoor air outlet.

[0014] In the technical solution, natural wind is introduced into the first air duct, and the natural wind and the air exchange air of the air conditioner are mixed, which will not reduce the compressor frequency and the air volume, and the cooling and heating capacity of the air conditioner will not be attenuated. It effectively improves the problem of uncomfortable air outlet temperature and will not cause the attenuation of cooling and heating capacity, greatly improving the user's comfort experience.

[0015] In addition, the present application also provides a vertical air-conditioning indoor unit, characterized in that it includes:

[0016] A shell, wherein the top and bottom ends of the shell are two opposite ends in the length direction of the shell, and the shell is provided with a first indoor air inlet, an indoor air outlet, and a second indoor air inlet;

[0017] an indoor heat exchanger, the indoor heat exchanger being arranged in the housing and close to the first indoor air inlet, the indoor heat exchanger being used for performing heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow;

[0018] A first air duct, the first air duct is arranged in the housing, the first air duct is located on a side of the indoor heat exchanger away from the first indoor air inlet, and the first air duct is connected to the first indoor air inlet and the indoor air outlet;

[0019] A first fan, the first fan is arranged in the first air duct, the first fan has a first air inlet and a first air outlet, the first air inlet is connected to the first indoor air inlet, and the first air outlet is connected to the indoor air outlet;

[0020] a second air duct, the second air duct being arranged in the housing and spaced apart from the first air duct along the length direction of the housing, the second air duct being connected to the first air duct and the second indoor air inlet;

[0021] The second fan is arranged in the shell, the second fan has a second air outlet and a second air inlet, the second air inlet is connected to the second indoor air inlet, the second air outlet is connected to the first air duct, the heat exchange airflow in the second air duct flows into the first air duct and mixes with the indoor airflow in the first air duct, and the mixed airflow is output through the indoor air outlet.

[0022] In the technical solution, the second air duct introduces indoor air, and the indoor natural wind and the air conditioning heat exchange air are mixed, which will not reduce the compressor frequency or the air outlet volume, and the air conditioning cooling and heating capacity will not be attenuated. It effectively improves the problem of uncomfortable air outlet temperature and will not cause the attenuation of cooling and heating capacity, greatly improving the user's comfort experience.

[0023] Some embodiments of the present application further include an air mixing shell, wherein the air mixing shell is arranged in the first air duct, the first fan is arranged in the air mixing shell, the air mixing shell has an air mixing outlet, and the air mixing outlet is connected to the indoor air outlet.

[0024] In some embodiments of the present application, a connecting port is provided on a side of the air mixing shell facing the second air duct, and the connecting port is connected to the second air outlet.

[0025] In some embodiments of the present application, the first fan includes a first casing, a first fan blade and a first driving member, the first air outlet and the first air inlet are opened in the first casing, the first fan blade and the first driving member are arranged in the first casing, and the first driving member drives the first fan blade to rotate.

[0026] In some embodiments of the present application, the first fan includes a second casing, a second fan blade and a second driving member, the second air outlet and the second air inlet are opened in the second casing, the second fan blade and the second driving member are arranged in the second casing, and the second driving member drives the second fan blade to rotate.

[0027] Some embodiments of the present application further include a wind shield, which is arranged on a side of the second fan close to the second indoor air inlet, and is used to prevent airflow from entering a side of the second fan away from the second indoor air inlet.

[0028] In some embodiments of the present application, a mounting portion is provided between the first air duct and the second air duct, the mounting portion is connected to the wind shield portion and is located on a side of the wind shield portion facing the second air inlet, and the indoor heat exchanger is installed on the mounting portion.

[0029] In some embodiments of the present application, an air outlet grille is provided in the indoor air outlet, and the air guiding direction of the air outlet grille is the same as the opening direction of the indoor air outlet.

[0030] In some embodiments of the present application, a fresh air fan is further provided in the second air duct, a fresh air outlet is provided on the shell, and the fresh air fan is used to input outdoor fresh air into the room through the fresh air outlet.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of the overall structure of a vertical air-conditioning indoor unit according to an embodiment of the present application;

[0033] Figure 2 It is a front view of the overall structure of a vertical air conditioner indoor unit according to an embodiment of the present application;

[0034] Figure 3 It is a schematic diagram of the partial structure of the air mixing shell of the vertical air conditioner indoor unit according to the implementation mode of the present application;

[0035] Figure 4 It is a front view of the partial structure of the second fan of the vertical air conditioner indoor unit according to the embodiment of the present application;

[0036] Figure 5 According to the embodiment of the present application, the vertical air conditioner indoor unit Figure 4 Structural cross-section view in the AA direction;

[0037] Figure 6 It is a partial structural schematic diagram of an indoor heat exchanger of a vertical air-conditioning indoor unit according to an embodiment of the present application;

[0038] Figure 7 It is a side view of the local structure of the air mixing shell of the vertical air conditioner indoor unit according to the embodiment of the present application;

[0039] Figure 8 is a cross-sectional view of the overall structure of a vertical air-conditioning indoor unit according to an embodiment of the present application;

[0040] Fig. 9 It is a partial cross-sectional side view of the overall structure of a vertical air-conditioning indoor unit according to an embodiment of the present application;

[0041] Fig.10 It is a schematic diagram of the partial structure of the first air duct of the vertical air conditioner indoor unit according to the embodiment of the present application;

[0042] Fig.11It is a schematic diagram of the partial structure of the second air duct of the vertical air-conditioning indoor unit according to the implementation mode of the present application.

[0043] In the above figures: 100, shell; 101, first indoor air inlet; 102, indoor air outlet; 103, second indoor air inlet; 200, first air duct; 300, first fan; 301, first air inlet; 302, first air outlet; 303, first casing; 304, first fan blade; 400, indoor heat exchanger; 500, second air duct; 600, second fan; 601, second air outlet; 602, second air inlet; 603, second casing; 604, second fan blade; 700, mixed air shell; 701, mixed air outlet; 702, connecting port; 800, wind shield; 900, mounting portion; 110, air outlet grille; 120, fresh air fan; 130, fresh air outlet. DETAILED DESCRIPTION

[0044] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "on" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] In the present utility model, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0048] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0049] In the present application, the vertical air conditioner indoor unit performs a refrigeration cycle of the air conditioner indoor unit by using a compressor, a condenser, an expansion valve and an indoor heat exchanger. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0050] The compressor compresses the refrigerant gas at low temperature and low pressure and discharges the refrigerant gas at high temperature and high pressure. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into liquid phase, and the heat is released to the surrounding environment through the condensation process. The expansion valve expands the liquid phase refrigerant at high temperature and high pressure condensed in the condenser into a low pressure liquid phase refrigerant.

[0051] The indoor heat exchanger evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low temperature and low pressure state to the compressor. The indoor heat exchanger can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled.

[0052] In the whole cycle, the air conditioner indoor unit can adjust the temperature of the indoor space. The outdoor unit of the air conditioner indoor unit refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger, the indoor unit of the air conditioner indoor unit includes the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0053] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an indoor heat exchanger. When the indoor heat exchanger functions as a condenser, the air conditioner indoor unit functions as a heater in a heating mode, and when the indoor heat exchanger functions as an indoor heat exchanger, the air conditioner indoor unit functions as a cooler in a cooling mode.

[0054] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0055] As attached Figures 1 to 5 As shown, in an illustrative embodiment of the vertical air-conditioning indoor unit of the utility model, the vertical air-conditioning indoor unit includes a shell 100, the top end and the bottom end of the shell 100 are two opposite ends in the length direction of the shell 100, and the shell 100 is provided with a first indoor air inlet 101, an indoor air outlet 102 and a second indoor air inlet 102.

[0056] The vertical air conditioner indoor unit includes a first air duct 200 . The first air duct 200 is disposed in the housing 100 . The first air duct 200 communicates with a first indoor air inlet 101 and an indoor air outlet 102 .

[0057] The vertical air conditioner indoor unit includes a first fan 300 , which is disposed in the first air duct 200 . The first fan 300 has a first air inlet 301 and a first air outlet 302 . The first air inlet 301 is connected to the first indoor air inlet 101 , and the first air outlet 302 is connected to the indoor air outlet 102 .

[0058] The vertical air conditioner indoor unit includes an indoor heat exchanger 400, which is arranged in the housing 100 and close to the second indoor air inlet 102. The indoor heat exchanger 400 is used to perform heat exchange on the air passing through it to form a heat exchange airflow. The length direction of the indoor heat exchanger 400 is the same as the length direction of the housing 100. The indoor heat exchanger 400 is detachably connected to the housing 100.

[0059] The vertical air conditioner indoor unit includes a second air duct 500, which is arranged in the shell 100 and is spaced apart from the first air duct 200 along the length direction of the shell 100. The second air duct 500 is located on the side of the indoor heat exchanger 400 away from the second indoor air inlet 102. The second air duct 500 connects the first air duct 200 and the second indoor air inlet 102.

[0060] The vertical air conditioner indoor unit includes a second fan 600, which is arranged in the second air duct 500. The second fan 600 has a second air outlet 601 and a second air inlet 602. The second air inlet 602 is connected to the second indoor air inlet 102, and the second air outlet 601 is connected to the first air duct 200. The heat exchange airflow in the second air duct 500 flows into the first air duct 200 and mixes with the indoor airflow in the first air duct 200. The mixed airflow is output through the indoor air outlet 102.

[0061] The indoor air entering from the first indoor air inlet 101 enters the first air duct 200 under the action of the first fan 300, and the indoor air entering from the second indoor air inlet 102 is heat exchanged through the indoor heat exchanger 400 to form a heat exchange airflow. The heat exchange airflow enters the first air duct 200 under the action of the second fan 600 and mixes with the indoor air in the first air duct 200. The mixed gas is output through the indoor air outlet 102.

[0062] In the prior art, the compressor frequency is reduced, thereby increasing the outlet air temperature during cooling, changing the temperature difference between the outlet air and the ambient temperature, and improving the discomfort caused by the overcooled air blowing on the body. However, this solution actually reduces the capacity of the air conditioner because it reduces the compressor frequency, which is not conducive to the rapid heating of the environment.

[0063] There are also ways to eliminate the feeling of wind, prevent direct blowing, reduce wind speed, etc., by reducing the outlet airflow and passively mixing it with the airflow in the original environment, so as to increase the outlet air temperature during cooling, change the temperature difference between the outlet air and the ambient temperature, and improve the discomfort when the super-cooled wind blows on the body. However, because the outlet airflow is reduced, the capacity of the air conditioner is actually reduced, which is not conducive to the rapid heating of the environment.

[0064] Through the above technical solution, the first air duct 200 introduces natural wind, and the natural wind and the air conditioning heat exchange air are mixed, which will not reduce the compressor frequency and the air outlet air volume, and the air conditioning cooling and heating capacity will not be attenuated. The problem of uncomfortable air outlet temperature is effectively improved, and it will not cause the attenuation of cooling and heating capacity, which greatly improves the user's comfort experience and makes the wind feel uniform and comfortable.

[0065] The first air duct 200 can merge with the heat exchange airflow in the second air duct 500 without a narrow and long air mixing duct, and the non-heat exchange air volume for mixing is larger, and the air mixing effect is better. When the air conditioner is cooling, the outlet air temperature of the second air duct 500 can be significantly increased to avoid the low outlet air temperature during cooling, which blows on the user and creates an uncomfortable experience.

[0066] When the first fan 300 and the second fan 600 work simultaneously, the air discharged by the first fan 300 and the air discharged by the second fan 600 are mixed in the first air duct 200, that is, the first fan 300 and the second fan 600 discharge air through a common air outlet.

[0067] The second fan 600 sends air in the direction of the first fan 300 and enters the first air duct 200. The first air duct 200 provides a certain buffer for the air output of the second fan 600. The air outputs of the first fan 300 and the second fan 600 are mixed in the first air duct 200 and then sent out, making the air output feel comfortable.

[0068] In some embodiments, the shell 100 is vertically arranged, the first indoor air inlet 101 and the second indoor air inlet 102 are opened on the rear side of the shell 100, and the first indoor air inlet 101 is arranged on the upper side of the second indoor air inlet 102.

[0069] After passing through the second indoor air inlet 102, the air is heated or cooled by the indoor heat exchanger 400 and then transported to the first air duct 200 by the second fan 600 and mixed with the indoor air in the first air duct 200. The mixed gas is discharged through the indoor air outlet 102 to change the indoor temperature.

[0070] As attached Figures 6 to 8 As shown, in some embodiments, the vertical air conditioner indoor unit may include an air mixing housing 700, the air mixing housing 700 is disposed in the housing 100, the first fan 300 is disposed in the air mixing housing 700, and the air mixing housing 700 has an air mixing outlet 701, and the air mixing outlet 701 is connected to the indoor air outlet 102. The air mixing outlet 701 is opened on the side of the air mixing housing 700 facing the indoor air outlet 102, and the air mixing outlet 701 is close to the indoor air outlet 102, so that the airflow in the air mixing outlet 701 can pass through the indoor air outlet 102 quickly.

[0071] In some embodiments, a connection port 702 is provided on one side of the air mixing housing 700 facing the second air duct 500 , and the connection port 702 is connected to the second air outlet 601 . The connection port 702 is disposed opposite to the second air outlet 601 .

[0072] As attached Figures 9 and 10 As shown, in some embodiments, the first fan 300 includes a first housing 303, and a first air outlet 302 and a first air inlet 301 are opened in the housing of the first fan 300. The first air outlet 302 is arranged toward the indoor air outlet 102, and the first air inlet 301 is arranged toward the first indoor air inlet 101, so that the wind at the first indoor air inlet 101 can be driven well.

[0073] The first housing 303 is cylindrical, the first air outlet 302 is a circular opening, the first air inlet 301 is a circular opening, and the first air inlet 301 and the first air outlet 302 are coaxially arranged.

[0074] The first fan 300 includes a first fan blade 304 . The first fan blade 304 is disposed in the first housing 303 .

[0075] The first fan 300 includes a first driving member, which includes but is not limited to an electric motor and a motor. The first driving member is disposed in the first housing 303 , and the first driving member drives the first fan blade 304 to rotate.

[0076] In some embodiments, the air mixing housing 700 and the first housing 303 are an integrally formed structure, which is easy to process, thereby reducing the processing cost and difficulty.

[0077] As attached Fig.11 As shown, in some embodiments, the first air outlet 302 is disposed in the air mixing shell 700 , and the first air inlet 301 is disposed outside the air mixing shell 700 , and the indoor air outside the air mixing shell 700 enters the air mixing shell 700 through the first air inlet 301 .

[0078] In some embodiments, the first air outlet 302 and the mixed air outlet 701 are spaced apart, and the distance between the first air outlet 302 and the mixed air outlet 701 facilitates mixing of airflows in the first air duct 200 and the second air duct 500 .

[0079] In some embodiments, the second fan 600 includes a second housing 603 , and a second air outlet 601 and a second air inlet 602 are provided in the housing of the second fan 600 . The second air outlet 601 is arranged toward the first air duct 200 , and the second air inlet 602 is arranged toward the second indoor air inlet 102 .

[0080] The air outlet direction of the second air outlet 601 and the air inlet direction of the second air inlet 602 form a certain angle, so that the second fan 600 drives the wind on the air inlet side away from the first fan 300 and changes the flow direction, and then blows it toward the first fan 300. Therefore, the heat exchange airflow can be better driven and guided, and then converge into the first air duct 200 for mixed air and then sent out, which improves the air mixing effect and concentrates the air outlet.

[0081] The second fan 600 includes a second fan blade 604 . The second fan blade 604 is disposed in the second housing 603 .

[0082] The second fan 600 includes a second driving member, which includes but is not limited to an electric motor. The second driving member is disposed in the second housing 603 , and drives the second fan blade 604 to rotate.

[0083] When the first fan 300 is not rotating, the indoor air entering from the second indoor air inlet 102 is heat exchanged through the indoor heat exchanger 400 to form a heat exchange airflow. The heat exchange airflow enters the first air duct 200 under the action of the second fan 600 and is output through the indoor air outlet 102.

[0084] In some embodiments, the first fan 300 is an axial flow fan, and the second fan 600 is a centrifugal fan. The first fan 300 is disposed between the first indoor air inlet 101 and the indoor air outlet 102 .

[0085] In some embodiments, the first fan 300 is disposed above the second fan 600 , and the space layout in the housing 100 is reasonable and compact, thereby improving the space utilization rate in the housing 100 .

[0086] In some embodiments, a wind shield 800 is further included, and the wind shield 800 is disposed on a side of the second fan 600 close to the second indoor air inlet 102, and is used to prevent airflow from entering the side of the second fan 600 away from the second indoor air inlet 102. The wind shield 800 is a vertically disposed plate-like structure, and the wind shield 800 is connected to the second housing 603.

[0087] In some embodiments, a mounting portion 900 is provided between the first air duct 200 and the second air duct 500 , the mounting portion 900 is connected to the wind shield 800 and is located on a side of the wind shield 800 facing the second air inlet 602 , and the indoor heat exchanger 400 is installed on the mounting portion 900 .

[0088] An air cavity is enclosed between the mounting portion 900, the second housing 603 and the wind shield portion 800 and the housing, and indoor air enters the air cavity from the second indoor air inlet 102 for heat exchange. The heat exchange airflow can only enter the second housing 603 through the second air inlet 602, and under the action of the second fan 600, enters the first air duct 200 from the second air outlet 601.

[0089] In some embodiments, an air outlet grille 100 is provided in the indoor air outlet 102. The air guide direction of the air outlet grille 100 is the same as the opening direction of the indoor air outlet 102. The air outlet grille 100 guides the air conditioning air passing through the indoor air outlet 102 to improve the user experience.

[0090] In some embodiments, a fresh air fan 110 is further disposed in the second air duct 500 , and a fresh air outlet 120 is opened on the housing 100 . The fresh air fan 110 is used to input outdoor fresh air into the room through the fresh air outlet 120 .

[0091] In some embodiments, the first fan 300 is an axial flow fan, and the second fan 600 is a centrifugal fan. The air outlet of the second fan 600 flows rapidly to the air outlet side of the first fan 300. Since the air outlet intensity of the axial flow fan is large and the air outlet distance is long, the air outlet of the axial flow fan quickly drives the air outlet of the centrifugal fan to mix in the first air duct 200. Therefore, when the two winds are blown toward the indoor air outlet 102, they not only have the effect of long-distance air supply, but also have a greater dispersion when the air is discharged, so that the air outlet and air supply range at the edge of the indoor air outlet 102 is larger and the wind feels comfortable.

[0092] When the first fan 300 is a fan of different types, a variety of air outlet modes can be formed to meet a variety of air outlet requirements.

[0093] In some embodiments, the first fan 300 is a diagonal flow fan, and the second fan 600 is a centrifugal fan. Similarly, the diagonal flow fan blows the wind on its air inlet side to the first air duct 200 at a certain centrifugal speed and axial speed, while the centrifugal fan quickly throws the wind on its corresponding air inlet side into the air outlet side of the first fan 300. The two winds are superimposed, mixed, and form a turbulent flow in the first air duct 200, and blown toward the indoor air outlet 102, which can also form an outlet with a certain air supply distance, and the wind feels comfortable and has a wide air supply range.

[0094] In addition, the present application also provides a vertical air-conditioning indoor unit, which includes a shell 100, the top and bottom ends of the shell 100 are two opposite ends in the length direction of the shell 100, and the shell 100 is provided with a first indoor air inlet 101, an indoor air outlet 102 and a second indoor air inlet 102.

[0095] The vertical air conditioner indoor unit includes an indoor heat exchanger 400, which is arranged in the housing 100 and close to the first indoor air inlet 101. The indoor heat exchanger 400 is used to exchange heat with the air passing through it to form a heat exchange airflow. The refrigerant flowing inside the indoor heat exchanger exchanges heat with the air to form a heating cycle or a cooling cycle.

[0096] The vertical air conditioner indoor unit includes a first air duct 200 , which is disposed in the shell 100 . The first air duct 200 is located on a side of the indoor heat exchanger 400 away from the first indoor air inlet 101 . The first air duct 200 connects the first indoor air inlet 101 and the indoor air outlet 102 .

[0097] The indoor heat exchanger 400 is arranged on the air inlet side of the first air duct 200. The indoor heat exchanger 400 forms a negative pressure cavity in the first air duct 200. The negative pressure cavity enables the external wind to undergo sufficient heat exchange when passing through the indoor heat exchanger 400, and the heat exchange is fast and the air inlet volume is large.

[0098] After the air has been heat exchanged in the indoor heat exchanger 400 and enters the negative pressure chamber, it is mixed in the first air duct 200 under the drive and guidance of the first fan 300 and the second fan 600, and is finally delivered to the outside from the indoor air outlet 102, providing a comfortable wind feeling.

[0099] The vertical air conditioner indoor unit includes a first fan 300 , which is disposed in the first air duct 200 . The first fan 300 has a first air inlet 301 and a first air outlet 302 . The first air inlet 301 is connected to the first indoor air inlet 101 , and the first air outlet 302 is connected to the indoor air outlet 102 .

[0100] The vertical air conditioner indoor unit includes a second air duct 500 , which is disposed in the housing 100 and is spaced apart from the first air duct 200 along the length direction of the housing 100 . The second air duct 500 communicates with the first air duct 200 and the second indoor air inlet 102 .

[0101] The vertical air conditioner indoor unit includes a second fan 600, which is arranged in the shell 100. The second fan 600 has a second air outlet 601 and a second air inlet 602. The second air inlet 602 is connected to the second indoor air inlet 102, and the second air outlet 601 is connected to the first air duct 200. The heat exchange airflow in the second air duct 500 flows into the first air duct 200 and mixes with the indoor airflow in the first air duct 200. The mixed airflow is output through the indoor air outlet 102.

[0102] The indoor air entering from the first indoor air inlet 101 is heat exchanged through the indoor heat exchanger 400 to form a heat exchange airflow. The heat exchange airflow enters the first air duct 200 under the action of the first fan 300. The indoor air entering from the second indoor air inlet 102 enters the first air duct 200 under the action of the second fan 600 and mixes with the indoor air in the first air duct 200. The mixed gas is output through the indoor air outlet 102.

[0103] Through the above technical solution, the second air duct 500 introduces natural wind, and the natural wind and the air conditioning heat exchange air are mixed, which will not reduce the compressor frequency and the air outlet volume, and the air conditioning cooling and heating capacity will not be attenuated. It effectively improves the problem of uncomfortable air outlet temperature and will not cause the attenuation of cooling and heating capacity, greatly improving the user's comfort experience.

[0104] In some embodiments, the first indoor air inlet 101 and the second indoor air inlet 102 are opened at the rear side of the housing 100 , and the first indoor air inlet 101 is arranged above the second indoor air inlet 102 . The indoor air outlet 102 is arranged at the front side of the housing 100 .

[0105] The indoor air is heated or cooled by the indoor heat exchanger 400 through the first indoor air inlet 101 and then transported to the first air duct 200 by the first fan 300. The air is transported to the first air duct 200 by the second fan 600 through the second indoor air inlet 102 and mixed with the heat exchange airflow in the first air duct 200. The mixed gas is discharged through the indoor air outlet 102 to change the indoor temperature.

[0106] In some embodiments, the vertical air conditioner indoor unit may include an air mixing housing 700, the air mixing housing 700 is disposed in the housing 100, the first fan 300 is disposed in the air mixing housing 700, and the air mixing housing 700 has an air mixing outlet 701, and the air mixing outlet 701 is connected to the indoor air outlet 102. The air mixing outlet 701 is opened on a side of the air mixing housing 700 away from the indoor heat exchanger 400, and the air mixing outlet 701 is close to the indoor air outlet 102, so that the airflow in the air mixing outlet 701 can pass through the indoor air outlet 102 quickly.

[0107] In some embodiments, the front side of the housing 100 is a panel, and the indoor air outlet 102 is provided on the panel. The mixed wind formed by the wind blown by the first fan 300 and the second fan 600 is mixed and then sent out from the indoor air outlet 102 .

[0108] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A vertical air conditioner indoor unit, characterized in that: It includes: A shell, wherein the top and bottom ends of the shell are two opposite ends in the length direction of the shell, and the shell is provided with a first indoor air inlet, an indoor air outlet, and a second indoor air inlet; A first air duct, the first air duct is arranged in the housing, and the first air duct is connected with the first indoor air inlet and the indoor air outlet; A first fan, the first fan is arranged in the first air duct, the first fan has a first air inlet and a first air outlet, the first air inlet is connected to the first indoor air inlet, and the first air outlet is connected to the indoor air outlet; an indoor heat exchanger, the indoor heat exchanger being arranged in the housing and close to the second indoor air inlet, the indoor heat exchanger being used for performing heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow; a second air duct, the second air duct being arranged in the shell and spaced apart from the first air duct along the length direction of the shell, the second air duct being located on a side of the indoor heat exchanger away from the second indoor air inlet, the second air duct being connected to the first air duct and the second indoor air inlet; The second fan is arranged in the second air duct, the second fan has a second air outlet and a second air inlet, the second air inlet is connected to the second indoor air inlet, the second air outlet is connected to the first air duct, the heat exchange airflow in the second air duct flows into the first air duct and mixes with the indoor airflow in the first air duct, and the mixed airflow is output through the indoor air outlet.

2. A vertical air conditioner indoor unit, characterized in that: It includes: A shell, wherein the top and bottom ends of the shell are two opposite ends in the length direction of the shell, and the shell is provided with a first indoor air inlet, a second indoor air inlet and an indoor air outlet; an indoor heat exchanger, the indoor heat exchanger being arranged in the housing and close to the first indoor air inlet, the indoor heat exchanger being used for performing heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow; A first air duct, the first air duct is arranged in the housing, the first air duct is located on a side of the indoor heat exchanger away from the first indoor air inlet, and the first air duct is connected to the first indoor air inlet and the indoor air outlet; A first fan, the first fan is arranged in the first air duct, the first fan has a first air inlet and a first air outlet, the first air inlet is connected to the first indoor air inlet, and the first air outlet is connected to the indoor air outlet; a second air duct, the second air duct being arranged in the housing and spaced apart from the first air duct along the length direction of the housing, the second air duct being connected to the first air duct and the second indoor air inlet; The second fan is arranged in the shell, the second fan has a second air outlet and a second air inlet, the second air inlet is connected to the second indoor air inlet, the second air outlet is connected to the first air duct, the heat exchange airflow in the second air duct flows into the first air duct and mixes with the indoor airflow in the first air duct, and the mixed airflow is output through the indoor air outlet.

3. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: It also includes an air mixing shell, which is arranged in the shell body, and the first fan is arranged in the air mixing shell. The air mixing shell is provided with an air mixing outlet, and the air mixing outlet is connected to the indoor air outlet.

4. The vertical air conditioner indoor unit according to claim 3, characterized in that: A connecting port is formed on a side of the air mixing shell facing the second air duct, and the connecting port is connected to the second air outlet.

5. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: The first fan includes a first housing, a first fan blade and a first driving member. The first fan blade and the first driving member are arranged in the first housing. The first air outlet and the first air inlet are opened in the first housing. The first driving member drives the first fan blade to rotate.

6. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: The second fan includes a second housing, a second fan blade and a second driving member, the second fan blade and the second driving member are arranged in the second housing, the second air outlet and the second air inlet are opened in the second housing, and the second driving member drives the second fan blade to rotate.

7. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: It also includes a wind shield, which is arranged on a side of the second fan close to the second indoor air inlet, and is used to prevent airflow from entering a side of the second fan away from the second indoor air inlet.

8. The vertical air conditioner indoor unit according to claim 7, characterized in that: An installation portion is provided between the first air duct and the second air duct, the installation portion is connected to the wind shield portion and is located on a side of the wind shield portion facing the second air inlet, and the indoor heat exchanger is installed on the installation portion.

9. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: An air outlet grille is arranged inside the indoor air outlet, and the air guiding direction of the air outlet grille is the same as the opening direction of the indoor air outlet.

10. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: A fresh air fan is also arranged in the second air duct, and a fresh air outlet is opened on the shell. The fresh air fan is used to input outdoor fresh air into the room through the fresh air outlet.

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