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, an indoor heat exchanger, a first air duct, a first fan, a fresh air duct, a fresh air fan and an air mixing duct. The first air duct communicates with the indoor air inlet; the first fan is arranged in the first air duct and provided with a first air inlet and a first air outlet, and the first air inlet communicates with the indoor air inlet; the fresh air duct is communicated with the outside; the fresh air fan is arranged in the fresh air duct; the mixed air duct communicates with the first indoor air outlet, the first air outlet and the fresh air duct. The first air duct is the heat exchange air duct, the air mixing air duct is arranged between the heat exchange air duct and the fresh air duct, heat exchange air and fresh air are mixed in the air mixing air duct, the problem that heat exchange air outlet and fresh air outlet of a traditional vertical air conditioner indoor unit are uncomfortable due to supercooling and superheating is effectively solved, and the air feeling is comfortable.

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 inside the shell, and the heat exchange airflow is output to the room from the air outlet. The fresh air air conditioner is a healthy and comfortable air conditioner with a fresh air function. It uses a fan to realize the circulation and ventilation between the room air and the outdoor air, and also has the function of purifying the air.

[0004] The traditional indoor air outlet has a low air temperature during cooling and a high air temperature during heating. When the air blows on the user, it will produce an uncomfortable experience and cause air conditioning disease in the long run. When the fresh air outlet is located on the front side of the machine body, cold air is blown out in winter and hot air is blown out in summer, which makes the user feel uncomfortable. In order to solve the above problems, the industry has developed a traditional fresh air mixing solution. The fresh air module of the air conditioner is usually located at the bottom of the indoor unit, and the indoor air outlet is usually located in the middle and upper part of the indoor unit. As a result, some solutions need to lead the fresh air to the main air outlet of the air conditioner through the mixing channel due to space problems, resulting in a decrease in the fresh air volume and poor mixing effect. Some solutions set the fresh air outlet near the lower side of the cooling and heating outlet, which can only be mixed with part of the cooling and heating outlet air, and do not solve the problem of low air outlet temperature during cooling and high air outlet temperature during heating at the indoor air outlet. 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, wherein the first air duct is a heat exchange air duct, and a mixing air duct is arranged between the heat exchange air duct and the fresh air duct, and the heat exchange air and the fresh air are mixed in the mixing air duct, providing a comfortable wind feeling.

[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 outlet and an indoor air inlet;

[0009] An indoor heat exchanger, the indoor heat exchanger is arranged in the shell and close to the indoor air inlet, and the indoor heat exchanger is used to perform heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow;

[0010] A first air duct, the first air duct is arranged in the shell and is located on a side of the indoor heat exchanger close to the first indoor air outlet, the first air duct is connected to the indoor air inlet;

[0011] 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, and the first air inlet is connected to the indoor air inlet;

[0012] A fresh air duct, the fresh air duct is arranged in the housing, the distribution direction of the fresh air duct and the first air duct is arranged along the length direction of the housing, and the fresh air duct is connected to the outdoors;

[0013] A fresh air fan, the fresh air fan is arranged in the fresh air duct, and the fresh air fan is used to input outdoor fresh air into the room;

[0014] The mixed air duct connects the first indoor air outlet, the first air duct and the fresh air duct, and the airflows in the first air duct and the fresh air duct flow into the mixed air duct and are mixed, and then are input into the room through the first indoor air outlet.

[0015] In the technical solution, the first air duct is the heat exchange duct, and a mixing air duct is arranged between the heat exchange duct and the fresh air duct. The heat exchange air and the fresh air are mixed in the mixing air duct, which effectively improves the problem of uncomfortable heat exchange air outlet and fresh air outlet due to overcooling or overheating in the traditional vertical air-conditioning indoor unit, and does not reduce the fresh air volume and cooling and heating capacity due to mixed air, which can greatly improve the user's comfort experience.

[0016] In addition, the present application also provides a vertical air conditioner indoor unit, which includes:

[0017] 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 outlet and an indoor air inlet;

[0018] An indoor heat exchanger, the indoor heat exchanger is arranged in the shell and close to the indoor air inlet, and the indoor heat exchanger is used to perform heat exchange on the air passing through the indoor heat exchanger to form a heat exchange airflow;

[0019] A first air duct, the first air duct is arranged in the shell and is located on a side of the indoor heat exchanger close to the first indoor air outlet, the first air duct is connected to the indoor air inlet;

[0020] 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, and the first air inlet is connected to the indoor air inlet;

[0021] A fresh air duct, the fresh air duct is arranged in the shell, the distribution direction of the fresh air duct and the first air duct is arranged along the length direction of the shell, the fresh air duct is connected to the outside, and the fresh air duct is connected to the first air outlet and the first indoor air outlet;

[0022] A fresh air fan is arranged in the fresh air duct, and is used to input outdoor fresh air into the fresh air duct, the airflow in the fresh air duct is mixed with the airflow in the first air duct, and the mixed airflow is output from the first indoor air outlet.

[0023] In the technical solution, the first air duct is the heat exchange duct. The heat exchange air in the heat exchange duct enters the fresh air duct under the action of the first fan, and is input into the room after being mixed with the fresh air in the fresh air duct. This effectively improves the problem of heat exchange air outlet and fresh air outlet due to overcooling or overheating in the indoor unit of the traditional vertical air conditioner, and greatly improves the user's comfort experience.

[0024] In some embodiments of the present application, the fresh air fan has a fresh air outlet, the fresh air outlet is connected to the first indoor air outlet, and the air outlet area of ​​the fresh air outlet is smaller than the air outlet area of ​​the first air outlet.

[0025] In some embodiments of the present application, the first air outlet is arranged on a side of the first fan close to the fresh air fan, and the fresh air outlet is arranged on a side of the fresh air fan close to the first air outlet.

[0026] In some embodiments of the present application, the first indoor air outlet is arranged between the first air duct and the fresh air duct.

[0027] Some embodiments of the present application further include a second fan, which is arranged in the first air duct and located on a side of the first fan away from the fresh air fan.

[0028] In some embodiments of the present application, a second indoor air outlet is provided on the shell, the second fan has a second air inlet and a second air outlet, the second air inlet is connected to the indoor air inlet, and the second air outlet is connected to the second indoor air outlet.

[0029] In some embodiments of the present application, a first baffle is provided at the first indoor air outlet, and the first baffle is used to open or close the first indoor air outlet.

[0030] In some embodiments of the present application, a second baffle is provided at the fresh air outlet, and the second baffle is used to open or close the fresh air outlet.

[0031] In some embodiments of the present application, the fresh air fan has a fresh air inlet, the fresh air inlet is connected to a fresh air duct, and the fresh air duct is connected to the outdoors.

[0032] 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

[0033] 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;

[0034] 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;

[0035] Figure 3 It is a partial structural schematic diagram of a first fan of a vertical air conditioner indoor unit according to an embodiment of the present application;

[0036] Figure 4 It is a partial structural schematic diagram of a fresh air fan of a vertical air conditioner indoor unit according to an embodiment of the present application;

[0037] 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;

[0038] 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;

[0039] Figure 7 It is a side view of the local structure of the fresh air fan of the vertical air conditioner indoor unit according to the embodiment of the present application;

[0040] Figure 8 It is a partial structural cross-sectional view of a first fan of a vertical air conditioner indoor unit according to an embodiment of the present application;

[0041] Fig. 9 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.10 It is a schematic diagram of the partial structure of the air mixing duct of the vertical air conditioner indoor unit according to the implementation mode of the present application;

[0043] Fig.11 It is a partial structural schematic diagram of a first fan of a vertical air conditioner indoor unit according to an embodiment of the present application;

[0044] Fig.12It is a schematic diagram of the partial structure of the fresh air fan of the vertical air-conditioning indoor unit according to the implementation mode of the present application.

[0045] In the above figures: 100, shell; 101, first indoor air outlet; 102, indoor air inlet; 200, indoor heat exchanger; 300, first air duct; 400, first fan; 500, fresh air duct; 600, fresh air fan; 601, fresh air outlet; 602, fresh air inlet; 700, mixed air duct; 800, second fan; 801, second air inlet; 802, second air outlet. DETAILED DESCRIPTION

[0046] In the description of the present invention, it should 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" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0047] In the present invention, unless otherwise clearly specified 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 connection; 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.

[0048] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "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" or "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.

[0049] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", 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, without contradiction.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0057] 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 outlet 101 and an indoor air inlet 102.

[0058] The indoor unit of the vertical air conditioner includes an indoor heat exchanger 200, which is arranged in the shell 100 and close to the indoor air inlet 102. The indoor heat exchanger 200 is used to exchange heat with the air passing through it to form a heat exchange airflow; heat exchange is performed between the refrigerant flowing inside the indoor heat exchanger and the air to form a heating cycle or a cooling cycle.

[0059] The vertical air conditioner indoor unit includes a first air duct 300 , which is disposed in the housing 100 and located at a side of the indoor heat exchanger 200 close to the first indoor air outlet 101 . The first air duct 300 is connected to the indoor air inlet 102 .

[0060] The vertical air conditioner indoor unit includes a first fan 400 , which is disposed in the first air duct 300 . The first fan 400 has a first air inlet and a first air outlet, and the first air inlet is connected to the indoor air inlet 102 .

[0061] The vertical air conditioner indoor unit includes a fresh air duct 500, which is arranged in the shell 100. The distribution direction of the fresh air duct 500 and the first air duct 300 is arranged along the length direction of the shell 100, and the fresh air duct 500 is connected to the outdoors.

[0062] The vertical air conditioner indoor unit includes a fresh air fan 600, which is disposed in the fresh air duct 500. The fresh air fan 600 is used to input outdoor fresh air into the room.

[0063] The vertical air conditioner indoor unit includes a mixed air duct 700, which connects the first indoor air outlet 101, the first air outlet and the fresh air duct 500. The airflow in the first air duct 300 and the fresh air duct 500 flows into the mixed air duct 700 and is mixed before being input into the room through the first indoor air outlet 101.

[0064] The indoor air entering from the indoor air inlet 102 is heat exchanged through the indoor heat exchanger 200 to form a heat exchange airflow. The heat exchange airflow enters the mixed air duct 700 under the action of the first fan 400. The fresh air entering from the outside enters the mixed air duct 700 under the action of the fresh air fan 600. The heat exchange airflow and the fresh air are mixed in the mixed air duct 700, and the mixed gas is input into the room through the first indoor air outlet 101.

[0065] When the fresh air fan 600 does not rotate, the heat exchange airflow in the first air duct 300 is output by the first fan 400 through the first indoor air outlet 101. When the first fan 400 does not rotate, the outdoor air is output by the fresh air fan 600 through the first indoor air outlet 101.

[0066] Through the above technical solution, the first air duct 300 is a heat exchange duct, and a mixing air duct 700 is arranged between the heat exchange duct and the fresh air duct 500. The heat exchange air and the fresh air are mixed in the mixing air duct 700, which effectively improves the problem of uncomfortable heat exchange air outlet and fresh air outlet due to overcooling and overheating in the traditional vertical air-conditioning indoor unit, and does not cause a decrease in the fresh air volume and cooling and heating capacity due to mixed air, which can greatly improve the user's comfort experience.

[0067] In some embodiments, the housing 100 is vertically arranged, and the indoor air inlet 102 is opened on the back of the housing 100. After passing through the indoor air inlet 102, the air is heated or cooled by the indoor heat exchanger 200 and then discharged by the first fan 400 through the first indoor air outlet 101 to change the indoor temperature. The length direction of the indoor heat exchanger 200 is the same as the length direction of the housing 100. The indoor heat exchanger 200 is detachably connected to the housing 100.

[0068] As attached Figures 6 to 8 As shown, in some embodiments, the fresh air fan 600 has a fresh air outlet 601, and the fresh air outlet 601 is connected to the first indoor air outlet 101, and the air outlet area of ​​the fresh air outlet 601 is smaller than the air outlet area of ​​the first air outlet.

[0069] In some embodiments, the first air outlet is disposed on a side of the first fan 400 close to the fresh air fan 600 , and the fresh air outlet 601 is disposed on a side of the fresh air fan 600 close to the first air outlet.

[0070] In some embodiments, the first indoor air outlet 101 is disposed between the first air duct 300 and the fresh air duct 500 .

[0071] In some embodiments, the first fan 400 is disposed on the upper side of the fresh air fan 600 , the first air outlet is disposed on the lower side of the first fan 400 , and the fresh air outlet 601 is disposed on the upper side of the fresh air fan 600 .

[0072] The air outlet direction of the first air outlet and the air inlet direction of the first air inlet form a certain angle, so that the first fan 400 drives the wind on the air inlet side 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 converged to the mixed air duct 700 for mixing and then sent out, which improves the air mixing effect and concentrates the air outlet.

[0073] In some embodiments, the first fan 400 includes a first casing, the first casing is disposed in the housing 100, and the first air outlet is opened in the first casing.

[0074] The first fan 400 includes a first fan blade, which is disposed in the housing 100 and is rotatably connected to the first casing.

[0075] The first fan 400 includes a first driving member, which drives the first fan blade to rotate. The first driving member includes but is not limited to an electric motor.

[0076] In some embodiments, the first housing is in a rectangular box shape, and the first air inlet is opened on a side of the first housing facing the indoor heat exchanger 200 .

[0077] In some embodiments, the vertical air conditioner indoor unit may include a second fan 800, which is disposed in the first air duct 300 and located on a side of the first fan 400 away from the fresh air fan 600. The second fan 800 is disposed on the upper side of the first fan 400, and the first fan 400 is disposed on the upper side of the fresh air fan 600.

[0078] The second fan 800 and the first fan 400 work together to generate more heat exchange airflow, thereby increasing the air output of the air conditioner.

[0079] In some embodiments, the housing 100 is provided with a second indoor air outlet, the second fan 800 has a second air inlet 801 and a second air outlet 802, the second air inlet 801 is connected to the indoor air inlet 102, and the second air outlet 802 is connected to the second indoor air outlet. The second indoor air outlet is provided above the first indoor air outlet 101.

[0080] In some embodiments, the second fan 800 includes a second casing, the second casing is disposed in the housing 100, and the second air outlet 802 is opened in the second casing.

[0081] The second fan 800 includes a second fan blade, which is disposed in the housing 100 and is rotatably connected to the second casing.

[0082] The second fan 800 includes a second driving member, which drives the second fan blades to rotate. The second driving member includes but is not limited to an electric motor.

[0083] In some embodiments, the first fan 400 , the second fan 800 , and the centrifugal fan may be turned on at the same time or only one of the first fan 400 , the second fan 800 , or the centrifugal fan may be turned on.

[0084] In some embodiments, a first baffle is provided at the first indoor air outlet 101 , and the first baffle is used to open or close the first indoor air outlet 101 .

[0085] In some embodiments, a second baffle is provided at the fresh air outlet 601 , and the second baffle is used to open or close the fresh air outlet 601 .

[0086] In some embodiments, the vertical air conditioner indoor unit may include a third air duct, which is arranged in the housing 100 and located on the side of the first air duct 300 away from the fresh air duct 500, and a second fan 800 is arranged in the third air duct. A second indoor air outlet is opened on the housing 100, and the third air duct connects the indoor air inlet 102 and the second indoor air outlet. The second indoor air outlet is arranged on the upper side of the first indoor air outlet 101.

[0087] In some embodiments, the fresh air fan 600 has a fresh air inlet 602, and a fresh air duct is connected to the fresh air inlet 602, and the fresh air duct is connected to the outside. The fresh air duct extends outside the housing 100 and is connected to the outside, the fresh air duct 500 is connected to the fresh air duct and the mixed air duct 700, and the fresh air fan 600 is arranged in the fresh air duct 500, and the outdoor air enters the fresh air duct 500 through the fresh air duct.

[0088] In some embodiments, the fresh air duct is a round tube, and the fresh air duct penetrates the back of the housing 100 in a direction away from the housing 100. The fresh air duct 500 is disposed at the bottom end of the housing 100.

[0089] As attached Figures 9 to 11 As shown, in some embodiments, the fresh air fan 600 includes a fresh air casing, a fresh air inlet 602 and a fresh air second outlet 802 are both opened in the fresh air casing, the fresh air inlet 602 is connected to the fresh air duct 500, and the fresh air outlet 601 is connected to the mixed air duct 700.

[0090] The fresh air fan 600 includes new fan blades, and the new fan blades are arranged in a fresh air machine casing.

[0091] The fresh air fan 600 includes a fresh air driving member, which is disposed in a fresh air machine housing and drives the fresh air fan blades to rotate. The fresh air driving member includes but is not limited to an electric motor.

[0092] In some embodiments, the new fan blades include a fresh air turntable, which is a circular disk and is coaxially fixed to the output shaft of the fresh air driving component.

[0093] The fresh air fan blades include a plurality of fresh air blades, which are fixed to the edge of the fresh air turntable, and the plurality of fresh air blades are arranged at intervals along the circumference of the fresh air turntable, and the distance between any two adjacent fresh air blades is the same.

[0094] In some embodiments, a grille is provided at the fresh air inlet 602 to prevent outdoor impurities from entering the fresh air blower 600 and causing damage.

[0095] In some embodiments, the fresh air fan 600 is a centrifugal fan, and the first fan 400 is a centrifugal fan.

[0096] In some embodiments, the fresh air fan 600 is an axial flow fan, which inputs outdoor air into the mixed air duct 700 when the axial flow fan rotates.

[0097] As attached Fig.12 As shown, in some embodiments, the air outlet direction of the first air outlet is set toward the fresh air fan 600, the air outlet direction of the fresh air outlet 601 is set horizontally, and the air outlet direction of the first indoor air outlet 101 is set horizontally.

[0098] 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 outlet 101 and an indoor air inlet 102.

[0099] The vertical air conditioner indoor unit includes an indoor heat exchanger 200. The indoor heat exchanger 200 is arranged in the housing 100 and close to the indoor air inlet 102. The indoor heat exchanger 200 is used to perform heat exchange on the air passing therethrough to form a heat exchange airflow.

[0100] The indoor heat exchanger 200 is formed on the air inlet side of the first air duct 300, and a negative pressure cavity is formed between the indoor heat exchanger 200 and the shell 100. An indoor air inlet 102 is formed behind the indoor heat exchanger 200 to connect to the negative pressure cavity, and external wind enters the negative pressure cavity from the indoor air inlet 102.

[0101] The vertical air conditioner indoor unit includes a first air duct 300 , which is disposed in the housing 100 and located at a side of the indoor heat exchanger 200 close to the first indoor air outlet 101 . The first air duct 300 is connected to the indoor air inlet 102 .

[0102] The vertical air conditioner indoor unit includes a first fan 400 , which is disposed in the first air duct 300 . The first fan 400 has a first air inlet and a first air outlet, and the first air inlet is connected to the indoor air inlet 102 .

[0103] The vertical air conditioner indoor unit includes a fresh air duct 500, which is arranged in the shell 100. The distribution direction of the fresh air duct 500 and the first air duct 300 is arranged along the length direction of the shell 100. The fresh air duct 500 is connected to the outdoors, and the fresh air duct 500 is connected to the first air outlet and the first indoor air outlet 101.

[0104] The vertical air conditioner indoor unit includes a fresh air fan 600, which is arranged in the fresh air duct 500. The fresh air fan 600 is used to input outdoor fresh air into the fresh air duct 500. The airflow in the fresh air duct 500 is mixed with the airflow in the first air duct 300, and the mixed airflow is output from the first indoor air outlet 101.

[0105] In some embodiments, the fresh air fan 600 has a fresh air outlet 601 , which is connected to the first indoor air outlet 101 , and the air outlet area of ​​the fresh air outlet 601 is smaller than the air outlet area of ​​the first air outlet.

[0106] The indoor air entering from the indoor air inlet 102 is heat exchanged through the indoor heat exchanger 200 to form a heat exchange airflow. The heat exchange airflow enters the fresh air duct 500 under the action of the first fan 400. The fresh air entering from the outside is mixed with the heat exchange airflow in the fresh air duct 500, and the mixed gas is input into the room through the first indoor air outlet 101.

[0107] Through the above technical solution, the first air duct 300 is a heat exchange air duct. The heat exchange air in the heat exchange air duct enters the fresh air duct 500 under the action of the first fan 400, and is input into the room after being mixed with the fresh air in the fresh air duct 500, effectively improving the problem of heat exchange air outlet and fresh air outlet due to overcooling or overheating in the indoor unit of the traditional vertical air conditioner, and greatly improving the user comfort experience.

[0108] In some embodiments, the first fan 400 and the centrifugal fan may be turned on at the same time or only one of the first fan 400 and the centrifugal fan may be turned on.

[0109] In some embodiments, the first indoor air outlet 101 is opened on the side of the housing 100 away from the indoor air inlet 102, and the first indoor air outlet 101 is opened on the front side of the housing 100. The first indoor air outlet 101 is arranged between the first air duct 300 and the fresh air duct 500.

[0110] In some embodiments, the first fan 400 is an axial flow fan, and the first air outlet faces the first indoor air outlet 101 . When the axial flow fan rotates, the heat exchange airflow is output through the first air outlet and the first indoor air outlet 101 .

[0111] In some embodiments, the first indoor air outlet 101 is a rectangular opening and its length direction is arranged along the width direction of the shell 100. An air guide plate is arranged at the first indoor air outlet 101, and the air guide plate is used to change the airflow direction of the air output from the first indoor air outlet 101.

[0112] In some embodiments, the fresh air fan 600 has a fresh air outlet 601 , which is connected to and close to the first indoor air outlet 101 , and the air outlet area of ​​the fresh air outlet 601 is smaller than the air outlet area of ​​the first air outlet.

[0113] 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 outlet and an indoor air inlet; An indoor heat exchanger, the indoor heat exchanger is arranged in the shell and close to the indoor air inlet, and the indoor heat exchanger is used to perform 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 shell and is located on a side of the indoor heat exchanger close to the first indoor air outlet, the first air duct is connected to the indoor air inlet; 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, and the first air inlet is connected to the indoor air inlet; A fresh air duct, the fresh air duct is arranged in the shell, the distribution direction of the fresh air duct and the first air duct is arranged along the length direction of the shell, and the fresh air duct is connected to the outside; A fresh air fan, the fresh air fan is arranged in the fresh air duct, and the fresh air fan is used to input outdoor fresh air into the room; An air mixing duct, the air mixing duct is connected to the first indoor air outlet, the first air duct and the fresh air duct, and the airflows in the first air duct and the fresh air duct flow into the air mixing duct and are mixed before being input into the room through the first indoor air outlet; The first fan is arranged on the upper side of the fresh air fan, the first air outlet is arranged on the lower side of the first fan, and the fresh air outlet is arranged on the upper side of the fresh air fan; The fresh air fan has a fresh air outlet, the fresh air outlet is connected to the first indoor air outlet, and the air outlet area of ​​the fresh air outlet is smaller than the air outlet area of ​​the first 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 outlet and an indoor air inlet; An indoor heat exchanger, the indoor heat exchanger is arranged in the shell and close to the indoor air inlet, and the indoor heat exchanger is used to perform 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 shell and is located on a side of the indoor heat exchanger close to the first indoor air outlet, the first air duct is connected to the indoor air inlet; 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, and the first air inlet is connected to the indoor air inlet; A fresh air duct, the fresh air duct is arranged in the shell, the distribution direction of the fresh air duct and the first air duct is arranged along the length direction of the shell, the fresh air duct is connected to the outside, and the fresh air duct is connected to the first air outlet and the first indoor air outlet; A fresh air fan, the fresh air fan is arranged in the fresh air duct, the fresh air fan is used to input outdoor fresh air into the fresh air duct, the airflow in the fresh air duct is mixed with the airflow in the first air duct, and the mixed airflow is output from the first indoor air outlet; The first fan is arranged on the upper side of the fresh air fan, the first air outlet is arranged on the lower side of the first fan, and the fresh air outlet is arranged on the upper side of the fresh air fan; The fresh air fan has a fresh air outlet, the fresh air outlet is connected to the first indoor air outlet, and the air outlet area of ​​the fresh air outlet is smaller than the air outlet area of ​​the first air outlet.

3. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: The first air outlet is arranged on a side of the first fan close to the fresh air fan, and the fresh air outlet is arranged on a side of the fresh air fan close to the first air outlet.

4. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: The first indoor air outlet is arranged between the first air duct and the fresh air duct.

5. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: It also includes a second fan, which is arranged in the first air duct and located on a side of the first fan away from the fresh air fan.

6. The vertical air conditioner indoor unit according to claim 5, characterized in that: The shell is provided with a second indoor air outlet, the second fan has a second air inlet and a second air outlet, the second air inlet is connected to the indoor air inlet, and the second air outlet is connected to the second indoor air outlet.

7. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: A first baffle is provided at the first indoor air outlet, and the first baffle is used to open or close the first indoor air outlet.

8. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: A second baffle is provided at the fresh air outlet, and the second baffle is used to open or close the fresh air outlet.

9. The vertical air conditioner indoor unit according to claim 1 or 2, characterized in that: The fresh air fan has a fresh air inlet, the fresh air inlet is connected to a fresh air duct, and the fresh air duct is connected to the outside.

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