CN224003809U

CN224003809U - Indoor unit of air conditioner

Info

Publication number: CN224003809U
Application number: CN202520664068.3U
Authority: CN
Inventors: 杜永; 张震; 宋振兴; 位向前; 牟天一
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2025-04-09
Filing date: 2025-04-09
Publication date: 2026-03-17
Anticipated expiration: 2035-04-09

Abstract

This application discloses an indoor air conditioner unit, belonging to the field of air conditioning technology. The indoor air conditioner unit includes: a return air vent and an air outlet on the outer casing; at least one fan disposed inside the outer casing, the fan being positioned near the return air vent; an indoor heat exchanger disposed on the air outlet side of the fan; the air outlet includes a first air outlet and a second air outlet, the first air outlet and the second air outlet being respectively disposed on adjacent side walls of the outer casing, the first air outlet being disposed on the side wall of the outer casing opposite to the leeward side of the indoor heat exchanger; a first air guide duct, one end of the first air guide duct being connected to the second air outlet, and the other end being bent and extended toward the bottom of the outer casing, for guiding the second air outlet to output heating airflow toward the bottom of the outer casing; this application, by setting multiple different air outlets to output cooling airflow or heating airflow respectively, and by using the first air guide duct to guide the airflow direction of some air outlets, thereby making the output direction of the heating airflow toward the bottom of the outer casing, thus allowing the two airflows to evenly cover the entire room, improving human comfort.

Description

Indoor unit of air conditioner

Technical Field

The application relates to the technical field of air conditioners, in particular to an air conditioner indoor unit.

Background

An air conditioner is an apparatus for adjusting and controlling parameters such as temperature, humidity, and flow rate of ambient air in a building or structure by manual means. An air conditioner generally includes an indoor unit and an outdoor unit.

The air conditioner indoor unit is used for refrigerating or heating, and the refrigerating airflow is easy to sink compared with the indoor air, and the heating airflow is easy to float compared with the indoor air.

However, if the air outlet is set to be horizontal, the air flow of the refrigerating air is blown from top to bottom in the room, so that the refrigerating air flow uniformly covers the room, the air flow of the refrigerating air is suspended at the top of the room, and the effect of uniformly covering the room by the air flow of the refrigerating air is not achieved, and conversely, if the air outlet is set to be downward, the effect of uniformly covering the room by the air flow of the refrigerating air is not achieved.

Therefore, based on the technical scheme, any situation that the refrigerating air flow or the heating air flow is not easy to uniformly cover the whole room inevitably exists during refrigeration or heating, so that the comfort of a human body is poor.

Disclosure of utility model

The application provides an indoor unit of an air conditioner, which is characterized in that a plurality of different air outlets are arranged to output refrigerating air flow or heating air flow respectively, and the air outlet direction of part of the air outlets is guided by a first air guide pipe, so that the output direction of the heating air flow faces to the lower part of a shell, the refrigerating air flow faces to the horizontal direction, and the two air flows are further enabled to uniformly cover the whole room, and the comfort of a human body is improved.

In one aspect, an indoor unit of an air conditioner is provided, including:

The shell is provided with an air return opening and an air outlet, and the air return opening and the air outlet are distributed along the circumferential direction of the shell;

The fan is arranged in the shell, and the fan is arranged close to the return air inlet;

An indoor heat exchanger arranged at the air outlet side of the fan and used for exchanging heat with the air flow passing through the indoor heat exchanger;

The air outlet comprises a first air outlet and a second air outlet, the first air outlet and the second air outlet are respectively arranged on two adjacent side walls of the shell, and the first air outlet is arranged on the side wall of the shell opposite to the lee side of the indoor heat exchanger;

The first air valve is arranged on the first air outlet and is used for opening or closing the first air outlet;

The second air valve is arranged on the second air outlet and is used for opening or closing the second air outlet;

One end of the first air guide pipe is communicated with the second air outlet, and the other end of the first air guide pipe extends to face to the lower part of the shell through bending and is used for guiding the second air outlet to output heating air flow to the lower part of the shell;

When the refrigerating air flow is output, the second air valve is closed, the first air valve is opened, the second air outlet is used for outputting the refrigerating air flow to the lower side of the shell through the first air guide pipe, and when the refrigerating air flow is output, the second air valve is closed, the first air valve is opened, and the refrigerating air flow is output to the horizontal direction deviating from the shell through the first air outlet.

In the air conditioner indoor unit, the first air outlet arranged at the front end of the shell is used for outputting the refrigerating air flow in the horizontal direction, and the second air outlet arranged at the side end face of the shell and the first air guide pipe are used for outputting the heating air flow to the lower part of the shell, so that the two air flows output by the same air conditioner indoor unit can cover the whole room, and the comfort of a human body is improved.

In some embodiments, the air conditioning indoor unit further comprises:

And a third air outlet is formed in the bottom end surface of the shell and used for outputting heating air flow to the lower part of the shell.

Based on the technical scheme, the heating air flow is output to the lower part of the shell through the third air outlet, so that the heating efficiency is improved.

In some embodiments, the air conditioning indoor unit further comprises:

and the third air valve is arranged on the third air outlet and is used for opening or closing the third air outlet.

Based on the technical scheme, the third air outlet is controlled to be opened or closed through the third air valve, and the first air valve and the second air valve are matched to control the air outlet.

In some embodiments, the return air inlet is formed in a side wall of the housing opposite the windward side of the indoor heat exchanger.

Based on the technical scheme, through making the return air inlet locate the rear end face of shell relative first air outlet, form good air circulation route, ensure that refrigeration or heating air current can flow in indoor space rapidly, improve the work efficiency of air conditioner.

In some embodiments, the air return port is disposed on a bottom end surface of the housing, and a preset distance is disposed between the air return port and the third air outlet.

Based on the technical scheme, through setting up the air inlet operation that presets the interval in order to make the return air inlet and the air-out operation of third air outlet noninterference, avoid the air current of output to flow back immediately in order to reduce the work efficiency of air conditioner.

In some embodiments, the indoor unit of the air conditioner further comprises a first grid, a second grid and a third grid, wherein the first grid is arranged at the air return opening and used for guiding air flow to flow back into the shell based on a first direction, the second grid is arranged at the third air outlet and used for guiding air flow to flow out of the shell based on a second direction, and an included angle between the first direction and the second direction is an acute angle.

Based on the technical scheme, through setting up first grid and second grid in order to guide air inlet and air-out direction respectively to make the contained angle of two wind directions be the acute angle, thereby avoid the air current of output to flow back immediately in order to reduce the work efficiency of air conditioner on the basis of guaranteeing the ventilation volume.

In some embodiments, the first direction is at an angle α to the second direction, the angle α satisfying that α is greater than or equal to 30 °, α is less than or equal to 45 °.

Based on the technical scheme, through setting up the contained angle of first direction and second direction to make contained angle value avoid the air current of output to flow back immediately in order to reduce the work efficiency of air conditioner on the basis of guaranteeing the air quantity is sufficient.

In some embodiments, the ratio X1 of the air outlet areas of the first air outlet, the second air outlet and the third air outlet to the working area of the indoor heat exchanger is that X1 is more than or equal to 0.3 and X1 is less than or equal to 0.8;

And/or the ratio Y1 of the size area of the air opening of the first air valve, the second air valve and the third air valve to the working area of the indoor heat exchanger, wherein the ratio Y1 satisfies that Y1 is more than or equal to 0.3 and Y1 is less than or equal to 0.8.

Based on the technical scheme, the ratio of the air outlet area of the air outlet or the air valve air outlet to the working area of the indoor heat exchanger is limited to optimize the air flow and the heat exchange efficiency.

In some embodiments, the ratio X2 of the air outlet areas of the first air outlet, the second air outlet and the third air outlet to the working area of the indoor heat exchanger is more than or equal to 0.4, and the ratio X2 is more than or equal to 0.6;

And/or the ratio Y2 of the size area of the air opening of the first air valve, the second air valve and the third air valve to the working area of the indoor heat exchanger, wherein the ratio Y2 satisfies that Y2 is more than or equal to 0.4 and Y2 is less than or equal to 0.6.

In another aspect, there is also provided an indoor unit of an air conditioner, including:

the air guide module is used for guiding the heated air flow to the lower part of the shell for output;

When the heating air flow is output, the first air valve is closed, the second air valve is opened, and the second air outlet outputs the heating air flow to the lower part of the shell through the air guide module; when the refrigerating air flow is output, the second air valve is closed, the first air valve is opened, and the refrigerating air flow is output to the horizontal direction deviating from the shell through the first air outlet.

Based on the technical scheme, the air guide module is used for guiding the heating air to flow to the lower part of the shell for output, so that the inclusion of the specific setting position of the second air outlet is stronger, and the heating air flow output by the second air outlet with the opening facing different positions can cover the whole room, so that the comfort of a human body is improved.

Drawings

Fig. 1 illustrates a first perspective view of an air conditioning indoor unit according to some embodiments;

FIG. 2 illustrates a front view of FIG. 1 in an air conditioning indoor unit according to some embodiments;

FIG. 3 illustrates a rear view of FIG. 1 in an air conditioning indoor unit according to some embodiments;

FIG. 4 illustrates a bottom view of FIG. 1 in an air conditioning indoor unit according to some embodiments;

fig. 5 illustrates a second perspective view of an air conditioning indoor unit according to some embodiments;

fig. 6 illustrates a third perspective view of an air conditioning indoor unit according to some embodiments;

Fig. 7 illustrates a fourth perspective view of an air conditioning indoor unit according to some embodiments;

FIG. 8 illustrates a front view of FIG. 7 in an air conditioning indoor unit according to some embodiments;

FIG. 9 illustrates a top view of FIG. 7 in an air conditioning indoor unit according to some embodiments;

Fig. 10 illustrates a bottom view of fig. 7 in an air conditioning indoor unit according to some embodiments.

In the above figures, 100 parts of the shell, 101 parts of the first air outlet, 102 parts of the second air outlet, 103 parts of the third air outlet, 104 parts of the return air inlet, 200 parts of the fan, 300 parts of the indoor heat exchanger, 400 parts of the first air valve, 500 parts of the second air valve, 600 parts of the third air valve, 700 parts of the first air guide pipe, 800 parts of the second air guide pipe.

Detailed Description

For the purposes of making the objects and embodiments of the present application more apparent, an exemplary embodiment of the present application will be described in detail below with reference to the accompanying drawings in which exemplary embodiments of the present application are illustrated, it being apparent that the exemplary embodiments described are only some, but not all, of the embodiments of the present application.

In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first", "second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, "a plurality of" means two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or in communication with each other between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The air conditioner of the present application performs a refrigerating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies a refrigerant to the air that has been conditioned and heat exchanged.

The compressor compresses refrigerant gas in a low-temperature and low-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator 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 evaporator may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner may adjust the temperature of the indoor space throughout the cycle.

An outdoor unit of an air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, an indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater of a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler of a cooling mode.

The utility model provides an air conditioner indoor unit, relates to the technical field of air conditioners, and is described below with reference to figures 1-10.

Referring to fig. 1 to 10, an indoor unit of an air conditioner includes a casing 100, wherein the casing 100 is hollow and is used as a main structure of the indoor unit of the air conditioner, which not only plays a role in protection, but also realizes reasonable guiding of air flow by providing an air return port 104 and an air outlet, and the air return port 104 and the air outlet are distributed along the circumferential direction of the casing.

The casing 100 is provided with an air return opening 104, and the air return opening 104 is used for receiving indoor air to be sucked as a starting point of air circulation.

The arrangement of the return air inlet 104 can avoid multiple holes on the ceiling, and the decoration is attractive.

Referring to fig. 5, at least one fan 200 is disposed in the housing 100, and the fan 200 is disposed near the air return opening 104 to guide the air flow into the housing 100.

Referring to fig. 5, 6, 8, and 9, an indoor heat exchanger 300 is further provided in the casing 100, and the indoor heat exchanger 300 is located at the air outlet side of the fan 200.

The side of the indoor heat exchanger 300 facing the fan 200 is a windward side, and the side facing away from the fan 200 is a leeward side.

The indoor heat exchanger 300 is a temperature control part that realizes temperature adjustment of an air flow, and transfers a cooling or heating effect to air through heat exchange, thereby exchanging heat with the air flow passing therethrough.

After the air flow entering the casing 100 from the return air inlet 104 is boosted by the fan 200, the air flow is blown from the air outlet side of the fan 200 to the indoor heat exchanger 300, and the indoor heat exchanger 300 absorbs heat to reduce the temperature of the air flow to form a refrigerating air flow.

Or after the air flow entering the casing 100 from the return air inlet 104 is boosted by the fan 200, the air flow is blown to the indoor heat exchanger 300 from the air outlet side of the fan 200, and the indoor heat exchanger 300 forms a heating air flow by radiating heat to raise the temperature of the air flow.

The air outlet formed on the housing 100 includes a first air outlet 101 and a second air outlet 102.

Referring to fig. 6 and 7, the first air outlet 101 is disposed on a side wall of the casing 100 opposite to the leeward side of the indoor heat exchanger, that is, the front end surface of the casing 100 is provided with the first air outlet 101, and the first air outlet 101 is used for outputting the refrigerating air flow to the front horizontal direction of the casing 100.

The first air outlet 101 is generally directed to a side far from a wall of the room or toward a center of the room, and the cooling air flow outputted through the first air outlet 101 sinks at a position at or near the center of the room. For ensuring that the refrigerating effect of the refrigerating air flow outputted from the first air outlet 101 is uniformly distributed in the room.

Referring to fig. 6 and 7, at least one second air outlet 102 is provided on two sidewalls of the housing 100 adjacent to the first air outlet 101.

The housing 100 is disposed at a position where one end face is close to a wall of a room.

At this time, only one side end face of the casing 100 in the length direction may be provided with the second air outlet 102, and the second air outlet 102 faces to a side far from the wall of the room. For avoiding the heating air flow output by the second air outlet 102 from being blocked by the wall of the room, so as to ensure uniform heating effect in the room.

When the installation position of the casing 100 is located in the center of the room, two second air outlets 102 may be respectively formed on two side end surfaces of the casing 100 in the length direction. For ensuring that the heating effect of the heating air flow output by the second air outlet 102 is uniformly distributed in the room.

Referring to fig. 4, 6, 7 and 10, a third air outlet 103 is further formed at the bottom end of the housing 100, and the third air outlet 103 is used for outputting the heating air flow to the lower side of the housing 100.

The third air outlet 103 faces the bottom direction of the room, and the heated air flow outputted through the third air outlet 103 firstly heats the air at the bottom of the room and then ascends at the middle part or a position close to the middle part of the room. For ensuring that the heating effect of the heating air flow output from the third air outlet 103 is uniformly distributed in the room.

The air return port 104 formed on the casing 100 is disposed at the other end of the casing 100 opposite to the first air outlet 101, i.e. the air return port 104 is formed on a side wall of the casing 100 opposite to the windward side of the indoor heat exchanger 300.

The air return port 104 and the first air outlet port 101 are disposed opposite to each other, so that an effective air flow circulation path can be formed.

The air return opening 104 is responsible for absorbing indoor polluted air, the air outlet is responsible for sending the treated fresh air back to the indoor, and the layout is helpful for ensuring effective circulation and circulation of indoor air and improving the refrigerating or heating effect of the indoor air conditioner.

A filter screen is provided at the return air inlet 104 of the housing 100.

And based on the fixed arrangement of the air return opening 104 and the cooperation of the air return opening 104 with the first air outlet 101, the second air outlet 102 and the third air outlet 103, the air flow direction of the air return opening 104 is fixed, and no reverse air flow exists. The problem that the hair and dust accumulated on the filter screen at the air return port 104 are blown out can be avoided.

The shell 100 is also provided with a second air guide pipe 800, the second air guide pipe 800 is arranged at the position of the first air outlet 101 on the shell 100, and the second air guide pipe 800 is hollow and is provided with two open ends.

Referring to fig. 1, 2 and 4, one end of the second air guiding duct 800 is connected to the first air outlet 101, and the other end extends to a preset position in a horizontal direction away from the housing 100.

The second air guide duct 800 is used for guiding the first air outlet 101 to output a cooling air flow at a preset position.

It should be noted that, the installation environment of the indoor unit of the air conditioner may not always be the most suitable output position of the first air outlet 101. In a relatively large room installation environment, the air conditioner indoor unit is always located close to the wall body in order to be matched with the installation of the air conditioner outdoor unit.

At this time, the position of the output cool air of the first air outlet 101 is close to one end of the room and far away from the other end, so that the cooling effect on the end of the room far away from the first air outlet 101 is poor, and the technical effect of uniform cooling cannot be achieved.

Therefore, the second air guide pipe 800 extends the cool air output position of the first air outlet 101 to the preset position to output air, so that the technical problem of uneven refrigeration can be solved. The preset position may be set as an intermediate position of the room according to actual conditions.

The output cool air position of the first air outlet 101 is extended to the middle position of the room through the second air guide pipe 800 so that the distance between the air outlet position and the two ends of the room is equal, and the output cool air is uniformly sunk to cool.

The first air duct is arranged in the shell 100 and is communicated with the first air outlet 101 and the air return port 104, and the first air duct is used for ensuring that air flow entering the shell 100 through the air return port 104 can be smoothly conveyed to the first air outlet 101 after refrigeration treatment, so that refrigeration air flow is output through the first air outlet 101.

The second air duct is arranged in the casing 100, and is communicated with the second air outlet 102 and the air return port 104, and the second air duct is used for ensuring that air flow entering the casing 100 through the air return port 104 can be smoothly conveyed to the second air outlet 102 after being subjected to heating treatment, so that heating air flow is output through the second air outlet 102.

The third air duct is arranged in the shell 100 and is communicated with the third air outlet 103 and the air return port 104, and the third air duct is used for ensuring that air flow entering the shell 100 through the air return port 104 can be smoothly conveyed to the third air outlet 103 after being subjected to heating treatment, so that heating air flow is output through the third air outlet 103.

At least one fan 200 is disposed in the housing 100, and the fan 200 is configured to supply air to the first air duct, the second air duct, and the third air duct. The air flow entering the interior of the casing 100 through the air return port 104 is caused to flow to the first air outlet 101, the second air outlet 102 and the third air outlet 103.

It should be noted that, considering the cooperation between the air return port 104 and the plurality of air outlets, when there is a high requirement for the air output of the air outlets, one fan 200 is difficult to satisfy the air supply requirement, and therefore the number of fans 200 should be set according to the actual situation.

Referring to fig. 3, 5 and 6, in some embodiments of the present application, the number of fans 200 may be three to increase the air volume to each air outlet, thereby improving the air supply efficiency.

In some embodiments of the application, fan 200 is a cross-flow fan 200 or a centrifugal fan 200.

The cross flow fan 200 has the advantages of low noise and high air volume, and the cross flow fan 200 is generally suitable for occasions requiring silence and high air volume requirements.

The cross flow fan 200 can generate more uniform air flow, so that the temperature of each indoor area is more uniform, and the comfort level is improved.

The design of cross-flow fan 200 is designed to reduce noise, and multiple cross-flow fans 200 can be operated at the same time to maintain a low noise level, thus providing a quiet environment for the user.

Centrifugal fan 200 has a strong airflow pushing capability and stability, and centrifugal fan 200 is generally suitable for applications requiring rapid and efficient air delivery.

The centrifugal fan 200 can rapidly deliver the treated air to each corner of the room, ensuring rapid adjustment of the indoor temperature and humidity.

The centrifugal fan 200 can maintain the stability of the air flow during operation, and avoid the influence of the air conditioning effect due to the air flow fluctuation.

It should be noted that, based on the arrangement of a plurality of fans 200, the cross-flow fan 200 and the centrifugal fan 200 may be mixed and arranged in the housing 100, so as to flexibly adjust the working states of the cross-flow fan 200 and the centrifugal fan 200 according to the indoor environment and the user requirement, thereby realizing customized air supply.

The power of the centrifugal fan 200 can be increased when rapid cooling or heating is required, and the cross-flow fan 200 can be relied on more when the indoor silence is required.

Referring to fig. 5, the casing 100 further includes a first air valve 400, where the first air valve 400 is disposed on the first air outlet 101, and the first air valve 400 is used to control opening and closing of the first air outlet 101, so as to adjust airflow direction in cooperation with the operation mode of the indoor heat exchanger 300.

The first air outlet 101 faces the front of the housing 100, and the first air outlet 101 is fixed to output the cooling air flow in a horizontal direction away from the housing 100. The first damper 400 is thus set to be opened in the cooling mode of the indoor heat exchanger 300 by the independent first damper 400 controller to output the cooling air flow through the first air outlet 101.

In contrast, when the indoor heat exchanger 300 is in the heating mode, the first damper 400 is closed at this time. So as to avoid outputting the heating air flow through the first air outlet 101, thereby avoiding too much heating air flow gathered at the top of the room, resulting in too high local air temperature and poor user experience.

Referring to fig. 5, the housing 100 further includes a second air valve 500, where the second air valve 500 is disposed on the second air outlet 102, and the second air valve 500 is used for controlling opening and closing of the second air outlet 102, so as to adjust the airflow direction in accordance with the working mode of the indoor heat exchanger 300.

The first air guide pipe 700 is disposed at the position of the second air outlet 102 on the housing 100, and the first air guide pipe 700 is hollow and has two open ends.

One end of the first air guide pipe 700 is communicated with the second air outlet 102, and the other end of the first air guide pipe is bent and extended to the lower part of the outer shell 100 after being far away from the outer shell 100, so that the actual air outlet direction is the lower part of the outer shell 100.

The first air guide pipe 700 is used for guiding the second air outlet 102 to output the heating air flow to the lower side of the outer casing 100.

The second air outlet 102 faces the side of the housing 100, and the second air outlet 102 is fixed to output the flow of heating air to the lower side of the housing 100 in cooperation with the first air guide duct 700. The second air valve 500 is thus set to be opened in the heating mode of the indoor heat exchanger 300 through the independent second air valve 500 controller to output the heated air flow through the second air outlet 102.

Conversely, when the indoor heat exchanger 300 is in the cooling mode, the second damper 500 is closed at this time. To avoid outputting the refrigerating air flow through the second air outlet 102, thereby avoiding too much refrigerating air flow gathered at the bottom of the room, resulting in too low local air temperature and poor user experience.

Referring to fig. 4, a third air valve 600 is disposed on the third air outlet 103, and the third air valve 600 is used for controlling the opening and closing of the third air outlet 103, so as to adjust the airflow direction in accordance with the operation mode of the indoor heat exchanger 300.

The third air outlet 103 faces the lower surface of the casing 100, and the third air outlet 103 is fixed to output the flow of heating air to the lower surface of the casing 100. The third air valve 600 is thus set to be opened in the heating mode of the indoor heat exchanger 300 by the independent third air valve 600 controller to output the heating air flow through the third air outlet 103.

Conversely, when the indoor heat exchanger 300 is in the cooling mode, the third damper 600 is closed at this time. In order to avoid outputting the refrigerating air flow through the third air outlet 103, thereby avoiding too much refrigerating air flow gathered at the bottom of the room, resulting in too low local air temperature and poor user experience.

In some embodiments of the present application, the first air outlet 101, the second air outlet 102 and the third air outlet 103 are integrally provided with the first air valve 400, the second air valve 500 and the third air valve 600, respectively, to facilitate installation.

The first air valve 400, the second air valve 500, and the third air valve 600 may have a circular shape, a rectangular shape, or the like depending on the actual situation.

In some embodiments of the application, the size and the area of the air outlet of any air outlet or any air valve are designed according to the air quantity, so that the average air speed Z1 of the passing air flow is equal to or more than 1.0m/s, and the average air speed Z1 is equal to or less than 4.0m/s.

The average wind speed of the air flow at any air outlet or the air outlet of any air valve is limited, so that the air flow can be uniformly distributed to each indoor area, and the situation that the air flow is too strong or too weak in a local area is avoided. So as to improve the comfort of the indoor environment and reduce the uncomfortable feeling caused by uneven air flow distribution.

In some embodiments of the application, the size and the area of the air outlet of any air outlet or any air valve are designed according to the air quantity, so that the average air speed Z2 of the passing air flow is more than or equal to 1.5m/s, and the average air speed Z2 is more than or equal to 2.5m/s.

By limiting the average wind speed of the air flow at any air outlet or the air outlet of any air valve, the noise generated during the operation of the air conditioning system is effectively reduced, and a quieter and more comfortable environment is provided for indoor personnel.

Too low wind speed may cause insufficient heat exchange, while too high wind speed may increase energy loss and noise, and after limiting the wind speed, the performance of the heat exchanger may be optimized, and the energy utilization efficiency may be improved.

When the indoor unit is used for cooling operation, air flows into the casing 100 through the return air inlet 104. The air flow entering the casing 100 is guided based on the fan 200 to pass through the indoor heat exchanger 300 for heat exchange, and the air flow cooled by the indoor heat exchanger 300 enters the first air duct, the second air duct and the third air duct.

At this time, the first air valve 400, the second air valve 500, and the third air valve 600 are operated by switching the indoor heat exchanger 300. Wherein the first damper 400 is opened and the second damper 500 and the third damper 600 are closed.

The cooled air flow enters the first air duct, the second air duct and the third air duct, but only the cooled air flow can be output from the first air outlet 101 to the horizontal direction away from the housing 100 through the first air duct. The refrigerating airflow gradually sinks from top to bottom in the room to cool down, so as to achieve the technical effect of uniform refrigeration.

When the indoor unit is used for heating, air flows into the casing 100 through the return air inlet 104. The air flow entering the casing 100 is guided based on the fan 200 to pass through the indoor heat exchanger 300 for heat exchange, and the air flow warmed up by the indoor heat exchanger 300 enters the first air duct, the second air duct, and the third air duct.

At this time, the first air valve 400, the second air valve 500, and the third air valve 600 are operated by switching the indoor heat exchanger 300 to heat. Wherein the first damper 400 is closed and the second damper 500 and the third damper 600 are opened.

The heated air flow enters the first air duct, the second air duct and the third air duct, and the heated air flow can be output to the lower side of the shell 100 from the second air outlet 102 and the third air outlet 103 through the second air duct and the third air duct. The heating air flow gradually rises in the room from bottom to top to heat the air, so as to achieve the technical effect of uniform heating.

In some embodiments of the present application, the ratio X1 of the air outlet areas of the first air outlet 101, the second air outlet 102 and the third air outlet 103 to the working area of the indoor heat exchanger 300 is satisfied that X1 is greater than or equal to 0.3 and X1 is less than or equal to 0.8.

The air outlet areas of the first air outlet 101, the second air outlet 102 and the third air outlet 103 are substantially the product of the length dimension and the width dimension of each air outlet.

The working area of the indoor heat exchanger 300 is essentially the surface area between which heat is transferred between the indoor heat exchanger 300 and the air stream as the air stream passes through the indoor heat exchanger 300.

The ratio of the two values is limited to ensure that the size of the air outlet is matched with the heat exchange capacity of the indoor heat exchanger 300. The air passing through the indoor heat exchanger 300 can sufficiently absorb or release heat and then be discharged after reaching a desired temperature, thereby improving heat exchange efficiency.

And/or the ratio Y1 of the size area of the air ports of the first air valve 400, the second air valve 500 and the third air valve 600 to the working area of the heat exchanger, wherein the ratio Y1 satisfies that Y1 is more than or equal to 0.3 and Y1 is less than or equal to 0.8.

The size area of the tuyere of the first, second and third dampers 400, 500 and 600 is substantially the product of the length and width dimensions of the tuyere controlled by the respective dampers.

By limiting the ratio of the two values, the failure rate caused by unsmooth air flow or insufficient heat exchange is reduced. Any air valve can flexibly adjust the air supply quantity and the temperature according to actual demands, and the response speed and the adaptability are improved.

In yet other embodiments of the present application,

Referring to fig. 4, 7 and 10, the position of the return air inlet 104 is disposed on the bottom end surface of the casing 100, and a preset distance is disposed between the return air inlet 104 and the third air outlet 103.

The return air inlet 104 is provided at the bottom end of the casing 100 to provide more various options for the installation of the indoor air conditioner. Avoiding that the back end surface of the chamber housing 100 is used for installation, the air return port 104 arranged on the back end surface of the housing 100 is required to be used for air return, so that the air quantity of the air return is too small.

The air return port 104 and the third air outlet 103 are opened at the bottom end of the casing 100 together, and there is a case that the air return port 104 returns air and the third air outlet 103 outputs air to cause short circuit. That is, the heating air flow of the third air outlet 103 is not used for heating at the indoor preset position, and is immediately sent back to the casing 100 by the air return inlet 104 for reprocessing, so that the heating efficiency is reduced.

The preset distance is arranged between the return air inlet 104 and the third air outlet 103, so that the return air passage of the return air inlet 104 is separated from the air outlet passage of the third air outlet 103 by a certain distance, and the mutual influence is avoided, thereby solving the problem of low heating efficiency.

Through locating the position of return air inlet 104 in the bottom of shell 100, and set up the interval of predetermineeing between return air inlet 104 and the third air outlet 103, improved the installation flexibility of air conditioning indoor set to still guaranteed the technological effect of heating efficiency.

In some embodiments of the present application, a plurality of first grills are arranged at the return air opening 104 for guiding the air flow back into the housing 100 based on the first direction.

The first grills are arranged at the air return opening 104 to form a first air guiding grille, and the first air guiding grille is used for guiding the air flow entering the casing 100 from the air return opening 104 to flow back based on a first direction. I.e. the flow direction of the return air flow is controlled and guided.

The second bars are arranged at the third air outlet 103 for guiding the air flow to flow out of the housing 100 based on the second direction.

The second grills are arranged at the air return opening 104 to form a second air guiding grille, and the second air guiding grille is used for guiding the air flow output from the third air outlet 103 to flow out of the casing 100 based on the second direction. I.e. the flow direction of the output air flow is controlled and guided.

The included angle between the first direction and the second direction is an acute angle.

By staggering the flow direction of the return air flow from the flow direction of the output air flow, the short circuit between the air outlet and the return air is avoided.

In addition, the larger the included angle between the first direction and the second direction is, the smaller the air outlet quantity and the air return quantity are. The flow direction included angle of the two is limited to be an acute angle, so that the air return quantity and the air outlet quantity can meet the requirements.

In some embodiments of the application, the angle alpha between the first direction and the second direction is more than or equal to 30 degrees and less than or equal to 45 degrees.

The smaller the included angle between the first direction and the second direction, the easier the air outlet air path and the return air path are mutually influenced, thereby causing air outlet and return short circuit.

Therefore, on the basis that the air outlet quantity and the air return quantity can meet the requirements, the included angle between the first direction and the second direction is limited, and the technical effects of avoiding short circuit of the air outlet and the air return can be achieved.

In some embodiments of the present application, the first grill provided at the return air inlet 104 is integrally provided with the second grill provided at the third air outlet 103 to form a third air guiding grill. The third conductive grating is conveniently mounted directly at the bottom of the housing 100 when mounted.

Based on the wind guiding direction difference of first grid strip and second grid strip on the third wind-guiding grid, can avoid air-out and return air short circuit.

In other embodiments of the present application,

The ratio X2 of the air outlet area of the first air outlet 101, the second air outlet 102 and the third air outlet 103 to the working area of the heat exchanger is more than or equal to 0.4, and the ratio X2 is more than or equal to 0.6.

And/or the ratio Y2 of the size area of the air ports of the first air valve 400, the second air valve 500 and the third air valve 600 to the working area of the heat exchanger, wherein the ratio Y2 satisfies that Y2 is more than or equal to 0.4 and Y2 is less than or equal to 0.6.

The air outlet areas of the air ports of the first air valve 400, the second air valve 500, and the third air valve 600 are substantially the product of the length dimension and the width dimension of the air port controlled by each air valve.

In other embodiments of the present application,

The indoor unit of the air conditioner comprises an air guiding module for guiding the outputted heated air flow to the lower part of the casing 100 for output.

Based on the second air outlet 102 being opened at the side end surface of the housing 100, the air guiding module is connected to the second air outlet 102 to guide the heated air flow outputted from the second air outlet 102 to be outputted towards the lower part of the housing 100. So that the heating air flow gradually rises from bottom to top to uniformly heat.

Based on the third air outlet 103 being opened on the bottom surface of the housing 100, the air guiding module is connected to the third air outlet 103 to guide the third air outlet 103 to extend a preset length below the housing 100. So that the output heating air flow is released at the preset position below the shell 100, the output position of the heating air flow is precisely controlled, and different heating requirements of users are met.

The air guide module is used for guiding the heating air to flow to the lower part of the shell 100 for output, so that the inclusion of the specific setting positions of the second air outlet 102 and/or the third air outlet 103 is stronger, the heating air flows output by the air outlets at different positions can cover the whole room, and the comfort of a human body is improved.

The heated air flow enters the first air duct, the second air duct and the third air duct, but can only output the heated air flow from the second air outlet 102 and the third air outlet 103 through the second air duct and the third air duct, and the heated air flow is output to the lower side of the shell 100 based on the air guiding module. The heating air flow gradually rises in the room from bottom to top to heat the air, so as to achieve the technical effect of uniform heating.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. The illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. An air conditioning indoor unit, comprising:

2. The indoor unit of claim 1, further comprising:

3. The indoor unit of claim 2, further comprising:

4. An indoor unit for an air conditioner according to claim 1, wherein the return air inlet is provided in a side wall of the housing opposite to the windward side of the indoor heat exchanger.

5. The indoor unit of claim 2, wherein the return air inlet is provided at a bottom end surface of the casing, and a preset distance is provided between the return air inlet and the third air outlet.

6. The indoor unit of claim 5, further comprising:

the first grid bars are arranged at the air return openings and used for guiding air flow to flow back into the shell based on a first direction;

The second grid bars are arranged at the third air outlet and used for guiding air flow to flow out of the shell based on a second direction;

7. An indoor unit for an air conditioner according to claim 6, wherein the angle α between the first direction and the second direction is greater than or equal to 30 ° and less than or equal to 45 °.

8. The indoor unit of any one of claims 2 to 7, wherein a ratio X1 of an air outlet area of the first, second, and third air outlets to a working area of the indoor heat exchanger is set to be X1, wherein X1 is equal to or greater than 0.3, and X1 is equal to or less than 0.8;

9. The indoor unit of any one of claims 2 to 7, wherein a ratio X2 of an air outlet area of the first, second, and third air outlets to a working area of the indoor heat exchanger is such that X2 is equal to or greater than 0.4 and X2 is equal to or less than 0.6;

10. An air conditioning indoor unit, comprising:

the air guide module is used for guiding the outputted heating air flow to the lower part of the shell for output;