CN214536501U

CN214536501U - Indoor unit of air conditioner and air conditioner

Info

Publication number: CN214536501U
Application number: CN202120202867.0U
Authority: CN
Inventors: 周星宇; 矫立涛; 郭敏; 刘帅
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-10-29
Anticipated expiration: 2031-01-25

Abstract

The application relates to the technical field of air conditioning, and discloses an air conditioner indoor unit. The air-conditioning indoor unit comprises: the air conditioner comprises a shell, a first air duct and a second air duct, wherein the shell is provided with an upper air outlet and a lower air outlet; a first fan and a first evaporator are arranged in the first air channel, and a first electronic expansion valve is installed at the inlet of the first evaporator; a second fan and a second evaporator are arranged in the second air channel; the inlet of the second evaporator is provided with a second electronic expansion valve; wherein the first evaporator and the second evaporator are connected in parallel. The design of air outlet and the two air outlets of air outlet down in this scheme adoption, and every air outlet corresponds an wind channel, and the two mutually noninterfere can adjust first electronic expansion valve, second electronic expansion valve, first fan and second fan respectively as required to the different air-out effects of upper and lower air outlet are realized. The application also discloses an air conditioner.

Description

Indoor unit of air conditioner and air conditioner

Technical Field

The application relates to the technical field of air conditioning, for example, to an air conditioner indoor unit and an air conditioner.

Background

With the development of economy and the advancement of technology, air conditioners have become one of common household appliances, but with the popularization of air conditioners, users have made more personalized demands on air conditioners.

In the same room, only one air conditioner is usually installed for air supply, but because the adult and the child have different cold air bearing capacities, when the adult and the child exist in the room at the same time, the air conditioner is required to simultaneously meet two air supply requirements; in addition, when the air conditioner user suffers from lower limb diseases such as rheumatism, old and cold legs and the like, the legs cannot be easily cooled, and the air conditioner is required to perform air supply in an up-and-down partition mode.

At present, air conditioners adopting a partitioned air supply scheme are available on the market, two air supply schemes can be implemented simultaneously, but the existing partitioned air supply mode actually adopts two groups of evaporators and is respectively provided with fans, and the rotating speeds of the two fans are changed to enable one side to generate high-speed air and the other side to generate low-speed air, but the circulating volumes of refrigerants in the evaporators on the two sides are the same, although the air speed is reduced, under the condition that the circulating volume of the refrigerants is not changed, the air outlet temperature on the low-speed air side is lower, only the air volume is reduced, and the partitioned air supply effect is not good.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air conditioner indoor unit and an air conditioner, and aims to improve the effect of air supply of an air conditioner in a partition mode.

In some embodiments, the air conditioning indoor unit includes: the air conditioner comprises a shell, a first air duct and a second air duct, wherein the shell is provided with an upper air outlet and a lower air outlet, and the first air duct corresponding to the upper air outlet and the second air duct corresponding to the lower air outlet are arranged in the shell; a first fan and a first evaporator are arranged in the first air channel, and a first electronic expansion valve is installed at the inlet of the first evaporator; a second fan and a second evaporator are arranged in the second air channel; a second electronic expansion valve is installed at the inlet of the second evaporator; wherein the first evaporator and the second evaporator are connected in parallel.

Optionally, the method further comprises: the first temperature sensor is arranged at the upper air outlet; and the second temperature sensor is arranged at the lower air outlet.

Optionally, the air outlet is provided with a soft air structure, and the soft air structure is used for supplying air by soft air.

Optionally, the soft wind structure is a plate-shaped structure provided with a wind dispersing hole.

Optionally, the wind sweeping area of the first fan is greater than or equal to the wind sweeping area of the second fan.

Optionally, the indoor unit of an air conditioner further includes: a human body sensing device mounted on the housing and configured to detect a height of a human body.

Optionally, the human body sensing device comprises a radar sensor or a thermal imaging sensor.

In some embodiments, the air conditioner includes: the air conditioning indoor unit is as described above.

Optionally, the air conditioner further comprises: a control module configured to control opening degrees of the first and second electronic expansion valves.

Optionally, the air conditioner further comprises: the control module is configured to control the rotational speeds of the first fan and the second fan.

The air conditioner indoor unit and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

this scheme adopts two air outlet designs, and every air outlet corresponds an wind channel, and mutually noninterfere when first wind channel and second wind channel carry out the air feed makes the air supply of air conditioning indoor set can correspond high-order district and low level district respectively and carry out the subregion air supply, and wherein, go up the air outlet and mainly supply air to high-order district, and the air outlet mainly supplies air to low level district down.

The fan and the evaporator are respectively arranged in the two air channels, the inlet ends of the evaporators are respectively provided with the electronic expansion valve, the first evaporator and the second evaporator are connected in parallel, the independent air supply capacity of the first air channel and the second air channel during working is ensured, when different air supply requirements exist in human bodies in target areas corresponding to the first air outlet and the second air outlet, the valve opening degrees of the first electronic expansion valve and the second electronic expansion valve can be respectively adjusted according to the corresponding air supply requirements, so that the refrigerant circulation amounts of the first evaporator and the second evaporator are different, and the effect that the air outlet temperatures of the upper air outlet and the lower air outlet are different is achieved; on the basis, the rotating speeds of the first fan and the second fan can be adjusted, so that the wind power of the first fan and the wind power of the second fan are different, and the effects that the air outlet intensity of the upper air outlet is different from that of the lower air outlet are achieved. Particularly, when children or people suffering from leg diseases such as rheumatism or gout exist in the air supply area corresponding to the lower air outlet, in order to prevent the low-temperature air supply from influencing the health of users, relatively higher temperature and smaller wind power can be provided for the low-level area compared with the high-level area.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of an air conditioner indoor unit provided in an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the working principle of the first evaporator and the second evaporator provided by the embodiment of the disclosure;

FIG. 3 is a schematic structural diagram of a soft wind structure provided by the embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another soft wind structure provided by the embodiment of the present disclosure.

Reference numerals:

10: a housing; 20: an upper air outlet; 30: a lower air outlet; 40: a first evaporator; 41: a first electronic expansion valve; 50: a second evaporator; 51: a second electronic expansion valve; 60: a soft wind structure; 61: a wind-dispersing hole; 62: a vent hole; 70: a human body sensing device; 80: a total liquid inlet pipe.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Referring to fig. 1 to 4, an embodiment of the present disclosure provides an indoor unit of an air conditioner, including a casing 10.

The casing 10 is provided with an upper air outlet 20 and a lower air outlet 30, and a first air duct corresponding to the upper air outlet 20 and a second air duct corresponding to the lower air outlet 30 are arranged inside the casing 10.

A first fan and a first evaporator 40 are arranged in the first air duct, and a first electronic expansion valve 41 is installed at the inlet of the first evaporator 40.

A second fan and a second evaporator 50 are arranged in the second air duct; a second electronic expansion valve 51 is installed at an inlet of the second evaporator 50.

Wherein the first evaporator 40 and the second evaporator 50 are connected in parallel.

It can be understood that the casing 10 is provided with an upper air outlet and a lower air outlet on the outside, and is provided with a double air duct corresponding to the double air outlets on the inside, so that the air supply of the indoor unit of the air conditioner corresponds to the high area and the low area respectively, wherein the upper air outlet 20 mainly supplies air to the high area, and the lower air outlet 30 mainly supplies air to the low area.

A first fan and a first evaporator 40 are provided in the first air passage, and a second fan and a second evaporator 50 are provided in the second air passage. The first air duct and the second air duct are respectively provided with the evaporation modules, and the first air duct and the second air duct are not interfered with each other when air supply is carried out.

The fans located in the air channels are mainly used for adjusting air supply intensity, the first fan and the second fan are respectively arranged in the first air channel and the second air channel, the first fan is connected with the first motor, the second fan is connected with the second motor, the two fans can be respectively controlled, and a user can make the air supply intensity of the upper air outlet 20 and the lower air outlet 30 different by adjusting the wind power of the first fan and the wind power of the second fan.

As shown in fig. 2, since the inlet ends of the first evaporator 40 and the second evaporator 50 are both provided with electronic expansion valves, the refrigerant circulation amount can be controlled by adjusting the opening degrees of the electronic expansion valves, so that the air supply temperatures of the upper air outlet 20 and the lower air outlet 30 can be differentiated, the air supply requirements of users at different heights can be met, and the upper air outlet 30 and the lower air outlet 30 can supply air in different areas.

The first evaporation module and the second evaporation module are connected in parallel. It can be understood that the first evaporation module and the second evaporation module are relatively independent and do not interfere with each other.

In practice, for example, in the cooling mode, when there are children or people with leg diseases such as rheumatism or gout in the air supply area corresponding to the lower air outlet 30, it is necessary to provide a relatively higher temperature to the lower area than to the higher area in order to avoid affecting the health of the user. Therefore, the opening degree of the second electronic expansion valve 51 can be reduced, so that the circulation amount of the refrigerant entering the second evaporator 50 is reduced, and the outlet air temperature of the lower outlet 30 is increased. In addition, the wind power of the second fan may be adjusted as necessary so that the air outlet intensity of the lower outlet 30 is slightly weaker than the air outlet intensity of the upper outlet 20.

Here, the control of the outlet air intensity and the control of the outlet air temperature may be performed simultaneously, or may be performed by selecting only the outlet air temperature.

By adopting the air-conditioning indoor unit provided by the embodiment of the disclosure, because the first air duct and the second air duct are independently arranged, the fans and the evaporators are respectively arranged in the two air ducts, the first evaporator 40 is connected with the second evaporator 50 in parallel, and the inlet ends of the evaporators are respectively provided with the electronic expansion valves, when different air supply requirements exist in human bodies in target areas corresponding to the first air outlet and the second air outlet, the valve opening degrees of the first electronic expansion valve 41 and the second electronic expansion valve 51 can be respectively adjusted according to the corresponding air supply requirements, so that the refrigerant circulation amounts of the first evaporator 40 and the second evaporator 50 are different, and the effect that the air outlet temperatures of the upper air outlet 20 and the lower air outlet 30 are different is achieved; on this basis, the rotating speeds of the first fan and the second fan can be adjusted, so that the wind power of the first fan and the wind power of the second fan are different, and the effects that the air outlet intensity of the upper air outlet 20 is different from that of the lower air outlet 30 are achieved. In particular, when there are children or people with leg diseases such as rheumatism or gout in the air supply area corresponding to the lower air outlet 30, in order to prevent the low-temperature air supply from affecting the health of the user, relatively higher temperature and lower wind power can be provided to the lower area compared to the higher area.

Optionally, the indoor unit of an air conditioner further includes: the total liquid inlet pipe 80 is divided in the casing 10, and is respectively connected with the first evaporator 40 and the second evaporator 50 to supply the refrigerant of the first evaporator 40 and the second evaporator 50, thereby reducing the pipeline connection outside the indoor unit of the air conditioner and facilitating the installation of the air conditioning equipment.

Optionally, the method further comprises: a first temperature sensor installed at the upper air outlet 20; and a second temperature sensor installed at the lower air outlet 30.

It can be understood that the first temperature sensor is used for measuring the outlet air temperature t1 of the upper outlet 20, and the second temperature sensor is used for measuring the outlet air temperature t2 of the lower outlet 30.

Further, a first temperature sensor may be associated with the first electronic expansion valve 41, and the first electronic expansion valve 41 may adjust the refrigerant circulation amount of the first evaporator 40 according to the outlet air temperature t1 and the temperature t01 corresponding to the upper outlet 20 set by the user; similarly, the second electronic expansion valve 51 may adjust the refrigerant circulation amount of the second evaporator 50 according to the outlet air temperature t2 and the temperature t02 corresponding to the lower outlet 30 set by the user.

For example, when t02 is greater than t2, that is, when the lower outlet 30 requires a higher outlet temperature, the valve opening of the second electronic expansion valve 51 is adjusted to be small, so that the refrigerant circulation amount entering the first evaporator 40 is reduced, and the outlet temperature t2 of the lower outlet 30 is increased.

In the field of air conditioners, the technical scheme of adjusting the valve opening degrees of the first electronic expansion valve 41 and the second electronic expansion valve 51 according to the temperature set by a user and the actual outlet air temperature measured by the temperature sensor is the prior art, and relevant technical details are not further described herein.

Optionally, the lower air outlet 30 is provided with a soft air structure 60, and the soft air structure 60 is used for supplying air by soft air. It can be understood that the soft wind structure 60 is mainly used for softening the wind blowing intensity of the lower wind outlet 30, so that the lower wind outlet 30 blows air in a soft wind manner, and the occurrence of discomfort of a user (especially for children or people suffering from rheumatism) caused by too strong wind blowing force in a low position area is reduced.

Optionally, the soft wind structure 60 is a plate-shaped structure provided with wind dispersing holes 61. It can be understood that the plate-shaped structure with the air dispersing holes 61 is installed at the lower air outlet 30, the air supplied from the lower air outlet 30 can be sent out only through the air dispersing holes 61 of the soft air structure 60, and the air dispersing holes 61 can disperse the air flow, weaken the strength of the air flow, and make the air supplied from the lower air outlet 30 softer.

As an example, the soft wind structure 60 may be fixed at the lower outlet 30 of the housing 10, as shown in fig. 3, and a plurality of wind dispersing holes 61 are uniformly formed on the soft wind structure 60.

As another example, the soft wind structure 60 may be movably installed at the lower wind outlet 30 by a displacement structure such as a sliding connection, a gear fit, a pneumatic drive, etc. This kind of gentle wind structure 60 can be as shown in fig. 4, including scattered wind district and ventilation zone, scattered wind district part is provided with a plurality of scattered wind holes 61 of evenly arranging, and ventilation zone part is provided with ventilation hole 62, and the open area of ventilation hole 62 equals with the air-out area of air outlet 30 down, or is less than the air-out area of air outlet 30 down a little.

The displacement structure can drive the soft wind structure 60 to displace, so that the lower air outlet 30 can switch the air supply modes of normal air supply and soft wind air supply. When the air supply device is used, a user can select a normal air supply mode or a soft air supply mode. When normal air supply is selected, the ventilation area of the soft air structure 60 is positioned at the lower air outlet 30, and the lower air outlet 30 supplies air normally; when the soft air supply is selected, the air diffusing area of the soft air structure 60 is located at the lower air outlet 30, and the air diffusing holes 61 can diffuse the air flow, so that the air flow strength is weakened, and the air supply of the lower air outlet 30 is softer.

Optionally, the wind-swept area of the first fan is greater than or equal to the wind-swept area of the second fan.

It is understood that, since the swept area is related to the wind intensity, the larger the swept area of the fan, the stronger the wind. Therefore, the air-blowing area of the first fan is designed to be larger than or equal to the air-blowing area of the second fan, and the air-blowing intensity of the lower outlet 30 is smaller than or equal to the air-blowing intensity of the upper outlet 20 under the condition that other conditions are not changed.

As an example, the air sweeping area of the first fan is larger than that of the second fan, when the air conditioner is turned on in the cooling mode, the air blowing intensity of the lower air outlet 30 is lower than that of the upper air outlet 20 by default, so as to avoid that the air blowing intensity of the lower air outlet 30 exceeds the bearing capacity of children or people with rheumatic diseases due to the fact that the user forgets to turn on the partitioned air blowing function. However, this example does not exclude the case where the user needs to perform high-intensity blowing to the low area, and in this case, the high-intensity blowing may be performed by adjusting the rotation speed of the second fan.

Optionally, the indoor unit of an air conditioner further includes: a human body sensing device 70 mounted on the housing 10, configured to detect a height of a human body.

It can be understood that the human body sensing device 70 for detecting the height of the human body is disposed on the casing 10, and is mainly used for determining whether a child exists in the space where the indoor unit of the air conditioner is located, and further calculating the rotation speeds of the first fan and the second fan, and the valve opening degrees of the first electronic expansion valve 41 and the second electronic expansion valve 51, so as to achieve accurate air supply to the target person.

As an example, an infrared sensor may be used to determine the height of the human body by using the size and height of the thermal image, thereby distinguishing an adult from a child. In practice, when it is determined that the human body in the area includes a child, the air can be supplied from the upper air outlet 20 and the lower air outlet 30 in different areas, the valve opening of the second electronic expansion valve 51 is reduced, the rotation speed of the second fan is increased, and comfortable air supply is performed. Here, the control of the outlet air intensity and the control of the outlet air temperature may be performed simultaneously, or may be performed by selecting only the outlet air temperature.

As another example, a plurality of distance sensors may be provided on the housing 10 from top to bottom, and the height of the human body may be determined by detecting the presence of the human body for different set heights, thereby distinguishing adults from children. In implementation, when the distance sensor in the high-level area does not detect the presence of a human body, and the distance sensor in the middle-level area or the low-level area detects the presence of a human body, it is determined that a child is present in the room or that the user is in a non-standing posture such as a sitting posture or a lying posture, and at this time, the air can be supplied from the upper air outlet 20 and the lower air outlet 30 in a partitioned manner, so that the valve opening of the second electronic expansion valve 51 is reduced, the rotation speed of the second fan is increased, and comfortable air supply is performed. Here, the control of the outlet air intensity and the control of the outlet air temperature may be performed simultaneously, or may be performed by selecting only the outlet air temperature.

As another example, in implementation, the sitting/lying state of the user may be determined according to the feedback of the human body sensing device 70, and tracking air blowing may be performed on the user, when it is detected that the human body exceeds the preset height, the user is determined to be in a standing posture, the air is blown simultaneously through the upper air outlet 20 and the lower air outlet 30, and when it is detected that the human body is lower than the preset height, the user is determined to be in a sitting/lying posture, and air blowing is mainly performed through the lower air outlet 30, so that tracking air blowing may be performed on the user. Preferably, when tracking blowing is performed, soft wind is supplied, so that the influence on user experience due to over-strong wind power is avoided; in addition, under the tracking air supply mode, the air supply can be swung, so that the phenomenon that the local part is too cold due to long-term concentrated air blowing at the same position is avoided.

The above three examples are all realized by the air conditioner control system automatically controlling according to the detection result of the human body sensing device 70, and correspondingly, a chip is arranged in the air conditioner indoor unit or the air conditioner outdoor unit, and a processor is loaded on the chip and is used for calculating the actions to be executed by the first motor and the second motor, or the first electronic expansion valve 41 and the first electronic expansion valve 41 according to the current indoor personnel condition.

Optionally, the human body sensing device 70 includes a radar sensor or a thermal imaging sensor.

It can be understood that when distance induction system is radar sensor, distance induction system mainly used supports the scene of pursuit formula air supply, and radar sensor response target personage's azimuth removes, and the treater is as the basis of judging target personage's gesture with this response result, adjusts and controls main air-out position and air-out wind direction.

When the distance sensing device is a thermal imaging sensor, the distance sensing device is mainly used for supporting a scene of comfortable air supply, the thermal imaging sensor is used for sensing the height of a target person and judging the composition of indoor members, if children exist indoors, the processor takes the sensing result as the basis for judging the air supply requirement of the target person, the valve opening degree of the second electronic expansion valve 51 is reduced, the air supply temperature of the lower air outlet 30 is increased, the rotating speed of the second fan can be reduced according to the requirement, and the air supply intensity of the lower air outlet 30 is reduced.

Optionally, the upper outlet 20 and the lower outlet 30 are arranged in parallel.

It can be understood that the upper air outlet 20 and the lower air outlet 30 are longitudinally arranged on the casing 10, and the upper air outlet 20 and the lower air outlet 30 are arranged in parallel up and down, which can not only ensure the appearance of the indoor unit of the air conditioner, but also avoid the uneven air outlet of the indoor unit of the air conditioner.

In some embodiments, an air conditioner includes: the air conditioner indoor unit.

Optionally, the air conditioner further comprises: a control module configured to control opening degrees of the first and second

electronic expansion valves

41 and 51. The air supply temperature of the lower air outlet 30 is not lower than the air supply temperature of the upper air outlet 20 by controlling the valve opening of the electronic expansion valve. When children or people with leg diseases such as rheumatism or gout exist in the air supply area corresponding to the lower air outlet 30, in order to prevent the low-temperature air supply from affecting the health of users, relatively higher temperature can be provided for the low-level area compared with the high-level area.

Optionally, the air conditioner further comprises: a control module configured to control rotational speeds of the first fan and the second fan.

It can be understood that the wind power of the fan is mainly determined by the rotation speed of the fan, the wind sweeping area of the fan and the wing profile of the fan blade, and the wind sweeping area of the fan and the wing profile of the fan blade are limited by the factors of the fan, so that the wind power of the fan is inconvenient to adjust in the use process. Therefore, the user can adjust the blowing intensity of the upper outlet 20 and the lower outlet 30 by adjusting the rotation speed of the first fan and the second fan, so that the blowing intensity of the lower outlet 30 is not more than the blowing intensity of the upper outlet 20, and when children or people with leg diseases such as rheumatism or gout exist in the blowing area corresponding to the lower outlet 30, in order to prevent the low-temperature blowing from affecting the health of the user, the blowing intensity can be further controlled on the basis of controlling the blowing temperature of the lower outlet 30, and wind power smaller than that of the high-level area is provided for the low-level area.

this scheme adopts two air outlet designs, and every air outlet corresponds an wind channel, and mutually noninterfere when first wind channel and second wind channel carry out the air feed makes the air supply of air conditioning indoor set can correspond high-order district and low level district respectively and carry out the subregion air supply, and wherein, upper air outlet 20 mainly supplies air to the high-order district, and lower air outlet 30 mainly supplies air to the low level district.

The two air channels are respectively provided with a fan and an evaporator, the inlet ends of the evaporators are respectively provided with an electronic expansion valve, and the first evaporator 40 is connected with the second evaporator 50 in parallel, so that the independent air supply capacity of the first air channel and the second air channel in work is ensured, when different air supply requirements exist in human bodies in target areas corresponding to the first air outlet and the second air outlet, the valve opening degrees of the first electronic expansion valve 41 and the second electronic expansion valve 51 can be respectively adjusted according to the corresponding air supply requirements, the refrigerant circulation amounts of the first evaporator 40 and the second evaporator 50 are different, and the effect that the air outlet temperatures of the upper air outlet 20 and the lower air outlet 30 are different is achieved; on this basis, the rotating speeds of the first fan and the second fan can be adjusted, so that the wind power of the first fan and the wind power of the second fan are different, and the effects that the air outlet intensity of the upper air outlet 20 is different from that of the lower air outlet 30 are achieved.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An indoor unit of an air conditioner, comprising:

the air conditioner comprises a shell (10) and a control device, wherein the shell (10) is provided with an upper air outlet (20) and a lower air outlet (30), and a first air duct corresponding to the upper air outlet (20) and a second air duct corresponding to the lower air outlet (30) are arranged inside the shell (10);

a first fan and a first evaporator (40) are arranged in the first air channel, and a first electronic expansion valve (41) is installed at the inlet of the first evaporator (40);

a second fan and a second evaporator (50) are arranged in the second air channel; a second electronic expansion valve (51) is installed at the inlet of the second evaporator (50);

wherein the first evaporator (40) and the second evaporator (50) are connected in parallel.

2. An indoor unit for an air conditioner according to claim 1, further comprising:

a first temperature sensor mounted at the upper outlet (20);

and the second temperature sensor is arranged at the lower air outlet (30).

3. An indoor unit of an air conditioner according to claim 1,

the air conditioner is characterized in that a soft air structure (60) is installed at the lower air outlet (30), and the soft air structure (60) is used for supplying air by soft air.

4. An indoor unit of an air conditioner according to claim 3,

the soft wind structure (60) is a plate-shaped structure provided with wind dispersing holes (61).

5. An indoor unit of an air conditioner according to claim 1,

the wind sweeping area of the first fan is larger than or equal to that of the second fan.

6. An indoor unit of an air conditioner according to any one of claims 1 to 5, further comprising:

a human body sensing device (70) mounted on the housing (10) configured to detect a human body height.

7. An indoor unit of an air conditioner according to claim 6,

the human body sensing device (70) comprises a radar sensor or a thermal imaging sensor.

8. An air conditioner characterized by comprising an indoor unit of an air conditioner according to any one of claims 1 to 7.

9. The air conditioner as claimed in claim 8, further comprising:

a control module configured to control opening degrees of the first electronic expansion valve (41) and the second electronic expansion valve (51).

10. The air conditioner as claimed in claim 9, further comprising:

the control module is configured to control the rotational speeds of the first fan and the second fan.