CN216159159U - Indoor unit of air conditioner - Google Patents

Abstract

The application relates to the technical field of household appliance manufacturing, and discloses an air conditioner indoor unit, which comprises a shell, at least two heat exchangers and at least two fans. At least two heat exchangers are transversely arranged in the shell side by side, and at least two fans are respectively arranged on the side parts of the heat exchangers. The heat exchanger comprises a base plate, an inlet pipeline and an outlet pipeline. The inlet pipeline is communicated with one port of the plurality of refrigerant channels, and the outlet pipeline is communicated with the other port of the plurality of refrigerant channels. The application provides an indoor set of air conditioning, a plurality of refrigerant passageways of heat exchanger take away the system heat through refrigerant heat conduction and flow convection, have improved the heat exchange efficiency of heat exchanger, and simultaneously, the indoor set of air conditioning includes two at least heat exchangers and two at least fans, has further promoted the wholeness ability of indoor set of air conditioning.

Description

Indoor unit of air conditioner

Technical Field

The application relates to the technical field of household appliance manufacturing, for example to an air conditioner indoor unit.

Background

A typical air conditioner consists of a condenser, an evaporator, a compressor and a throttling device. The condenser and the evaporator can be regarded as heat exchangers functionally, and the heat exchange performance of the condenser and the evaporator is an index for measuring the refrigeration performance and the power consumption of the air conditioner. In order to improve the cooling and heating efficiency of the air conditioner, the existing indoor unit adopts a plurality of heat exchangers.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the path lengths of the refrigerant flowing through the plurality of heat exchangers of the indoor unit of the air conditioner are different, so that the refrigerant flow in the plurality of heat exchangers is different, the heat exchange temperatures of the plurality of heat exchangers are different, and the refrigerating and heating effects of the indoor unit of the air conditioner are seriously influenced.

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, which aims to solve the problem of low energy efficiency of the air conditioner indoor unit.

In some embodiments, an air conditioning indoor unit includes a housing, at least two heat exchangers, and at least two fans. At least two heat exchangers are transversely arranged in the shell side by side; at least two fans are respectively arranged on the side parts of the heat exchanger. The heat exchanger comprises a base plate, an inlet pipeline and an outlet pipeline. A plurality of refrigerant channels penetrate through the substrate; the inlet pipeline is communicated with one end port of the plurality of refrigerant channels; the outlet pipeline is communicated with the other ports of the refrigerant channels.

In some optional embodiments, the distances between the plurality of refrigerant channels increase in sequence along the direction from the fan to the heat exchanger.

In some optional embodiments, the pipe diameters of the plurality of refrigerant channels decrease in sequence along the direction from the fan to the heat exchanger.

In some optional embodiments, the heat exchanger further comprises a plurality of fins disposed on the surface of the substrate.

In some alternative embodiments, the plurality of fins are disposed at a predetermined angle with respect to the surface of the substrate.

In some alternative embodiments, the fin spacing decreases in sequence in the direction from the inlet tube to the outlet tube.

In some alternative embodiments, the fin heights increase sequentially in the direction from the inlet tube to the outlet tube.

In some optional embodiments, the plurality of fins are located on one side or both sides of the plurality of refrigerant channels.

In some alternative embodiments, at least two heat exchangers are connected in parallel.

In some optional embodiments, the air flowing out of the fan is perpendicular to the flow direction of the refrigerant in the plurality of refrigerant channels.

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

the air-conditioning indoor unit comprises a shell, at least two heat exchangers and at least two fans. At least two heat exchangers are transversely arranged in the shell side by side, and at least two fans are respectively arranged on the side parts of the heat exchangers. The heat exchanger comprises a base plate, an inlet pipeline and an outlet pipeline. The inlet pipeline is communicated with one port of the plurality of refrigerant channels, and the outlet pipeline is communicated with the other port of the plurality of refrigerant channels. The application provides an indoor set of air conditioner, system's heat is taken away through refrigerant heat conduction and flow convection to a plurality of refrigerant passageways of heat exchanger, has improved the heat exchange efficiency of heat exchanger, and simultaneously, the indoor set of air conditioner includes two at least heat exchangers and two at least fans, has further promoted the wholeness ability of indoor set of air conditioner to avoid the problem that the indoor set of air conditioner efficiency is low.

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 overall structure diagram of an air conditioner indoor unit provided in an embodiment of the present disclosure;

fig. 2 is a schematic partial structure diagram of an air conditioner indoor unit provided in the embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a housing provided by an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a heat exchanger provided by an embodiment of the present disclosure;

fig. 5 is a schematic cross-sectional view of a heat exchanger provided by an embodiment of the present disclosure.

Reference numerals:

1: a housing; 11: an air inlet; 12: an air outlet; 2: a heat exchanger; 21: a substrate; 211: a refrigerant channel; 22: a fin; 3: a fan; 4: an inlet line; 5: an outlet line; 6: a water pan; 7: and a water discharge 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 5, an embodiment of the present disclosure provides an indoor unit of an air conditioner.

The air conditioner indoor unit provided by the embodiment of the disclosure comprises a shell 1, at least two heat exchangers 2 and at least two fans 3. At least two heat exchangers 2 are transversely arranged in the shell 1 side by side; at least two fans 3 are respectively arranged at the side parts of the heat exchanger 2. Wherein the heat exchanger 2 comprises a base plate 21, an inlet line 4 and an outlet line 5. A plurality of refrigerant channels 211 penetrate through the base plate 21; the inlet pipeline 4 is communicated with one end port of a plurality of refrigerant channels 211; the outlet pipe 5 communicates with the other ports of the plurality of refrigerant passages 211. The system heat is taken away through refrigerant heat conduction and flowing convection by the aid of the plurality of refrigerant channels 211 of the heat exchanger 2, heat exchange efficiency of the heat exchanger 2 is improved, meanwhile, the indoor air conditioner comprises at least two heat exchangers 2 and at least two fans 3, and overall performance of the indoor air conditioner is further improved.

Optionally, the housing 1 comprises a front panel, a back panel, a bottom panel, a left side panel and a right side panel. The front panel, the back panel, the bottom panel, the left side panel and the right side panel enclose an installation space. The bottom plate and the back plate of the housing 1 are respectively provided with a vent. Two heat exchangers 2 are arranged in the shell 1 side by side symmetrically, and two fans 3 are arranged in the shell 1 symmetrically. Compare in a fan 3, double fan 3's heat exchange efficiency is higher. Preferably, the air conditioner indoor unit of the embodiment of the present disclosure is used for a ceiling air conditioner.

Alternatively, a plurality of refrigerant channels 211 are provided in the base plate 21, and adjacent refrigerant channels 211 are isolated from each other. The refrigerant circulation pipeline is divided into a plurality of refrigerant channels 211, so that the defect that the refrigerant is evaporated before the outlet pipeline 5 is overcome.

Alternatively, the plurality of refrigerant passages 211 are parallel to each other. The multiple refrigerant channels 211 are arranged in parallel and in heat conduction contact with each other, so that heat exchange among the refrigerant channels 211 is increased, and heat exchange of the heat exchanger 2 is more balanced.

Optionally, a first heat exchanger and a second heat exchanger are arranged in the casing 1 of the indoor unit of the air conditioner side by side, the first fan and the second fan are located on the same side face of the first heat exchanger and the second heat exchanger, and the refrigerant channel 211 in the first heat exchanger and the refrigerant channel 211 in the second heat exchanger are located on the same plane. Through set up two fans 3 at the homonymy of two heat exchangers 2, can improve the efficiency of machine in the air conditioning, reduce the area of machine in the air conditioning simultaneously.

Alternatively, the pitches of the plurality of refrigerant channels 211 are sequentially increased in the direction from the fan 3 to the heat exchanger 2. The fan 3 is an axial flow fan or a turbofan, and wind enters from the periphery of the fan 3 and exits from the middle of the fan 3. The distances between the refrigerant channels 211 are sequentially increased from 1 cm to 2cm to 3 cm to 6cm along the direction from the fan 3 to the heat exchanger 2. The refrigerant channels 211 close to the fan 3 are densely distributed, and the refrigerant channels 211 far from the fan 3 are sparsely distributed. The refrigerant passageway 211 interval increases in proper order, can make the refrigerant passageway 211 of keeping away from fan 3, shortens to fan 3's distance to the wind speed that makes the refrigerant passageway 211 of keeping away from fan 3 promotes, promotes the heat exchange efficiency of machine in the air conditioning.

Alternatively, the pipe diameters of the plurality of refrigerant channels 211 are sequentially decreased in a direction from the fan 3 to the heat exchanger 2. The pipe diameter of the refrigerant channel 211 is sequentially reduced from 2cm to 4cm to 1 cm to 2cm along the direction from the fan 3 to the heat exchanger 2. The pipe diameter of the refrigerant channel 211 close to the fan 3 is larger, and the pipe diameter of the refrigerant channel 211 far away from the fan 3 is smaller. Through adjusting the pipe diameter of refrigerant passageway 211, make the refrigerant flow in the different refrigerant passageways 211 different, the pipe diameter is less, and the velocity of flow that the intraductal refrigerant flows is big more, and heat transfer coefficient improves to improve the heat transfer performance of the refrigerant passageway 211 of keeping away from fan 3.

Optionally, the heat exchanger 2 further includes a plurality of fins 22 disposed on the surface of the base plate 21. The plurality of fins 22 are integrally formed with the base plate 21 by extrusion and cutting, and the plurality of fins 22 are located on the surface of the base plate 21 to form air flow channels. Air is blown out from the center of the fan 3 through the pressure difference formed by the fan 3, enters from two sides of the fins 22, and carries away system heat through heat conduction and flow convection of a refrigerant. In addition, the fins 22 and the base plate 21 are integrally extruded and cut to form a whole, so that large thermal contact resistance caused by welding is avoided, the heat exchange efficiency of the heat exchanger 2 is improved, and the stability and reliability of the indoor unit of the air conditioner are improved.

Specifically, when the air conditioner operates in a refrigeration working condition, the first heat exchanger and the second heat exchanger are combined with the plurality of fins 22 to perform efficient air cooling and heat dissipation enhancement, so that the indoor unit of the air conditioner has better heat exchange performance under a high-temperature working condition. When the heating working condition is operated, the air cooling heat dissipation can be carried out by only depending on the fin 22 assembly.

Optionally, the plurality of fins 22 and the surface of the substrate 21 are provided with a preset included angle, and the preset included angle is smaller than 90 °. The preset included angle enables condensed water formed by air on the outer surface of the fin 22 to flow out along the included angle, so that a large-area liquid film is prevented from being formed, and the heat exchange efficiency of the system is improved.

Optionally, the preset angles of the base plate 21 and the fins 22 on the two heat exchangers 2 are the same, and the plurality of fins 22 on the two heat exchangers 2 are arranged in parallel, so that the noise is reduced by reducing the wind resistance, and the air cooling heat exchange performance is improved.

Alternatively, the plurality of fins 22 are located on the same side of the base plate 21. The fins 22 of the heat exchanger 2 are arranged on the same side, so that the floor area of the indoor unit of the air conditioner can be reduced. Moreover, the number of the fins 22 can be selected according to the specific space requirement of the system and the requirement on the heat exchange efficiency, so as to better meet the requirements of different areas and different users on the space occupation of the air conditioner and the efficiency of the air conditioner.

Alternatively, the fins 22 are successively less spaced in the direction from the inlet pipe 4 to the outlet pipe 5. The fins 22 are sequentially reduced from 4-6cm to 1-2cm in the direction from the inlet pipe 4 to the outlet pipe 5. Compare in the heat exchanger 2 of fin 22 uniform spacing, the refrigerant temperature of 2 inlet pipeline 4 of heat exchanger is less than outlet pipeline 5's refrigerant temperature, and the fin 22 that is close to inlet pipeline 4 distributes sparsely, and the fin 22 that is close to outlet pipeline 5 distributes densely, has optimized the interval of a plurality of fins 22 and has arranged, has promoted heat exchanger 2's performance.

Alternatively, the fins 22 increase in height in the direction from the inlet pipe 4 to the outlet pipe 5. The height of the fins 22 close to the inlet pipeline 4 is small, the height of the fins 22 close to the outlet pipeline 5 is large, and the height of the fins 22 is increased from 1-2cm to 4-6 cm. Compared to the case where a plurality of fins 22 having the same size are provided on the surface of the base plate 21, the temperature of the refrigerant flowing through the refrigerant passage 211 near the inlet pipe 4 is low, and the temperature of the refrigerant flowing through the refrigerant passage 211 near the outlet pipe 5 is high. By arranging the fins 22 with different heights, the heights of the fins 22 are optimized, so that the heat exchange quantity of all parts of the system is more balanced, and the heat exchange efficiency of the heat exchanger 2 is better improved.

Optionally, at least two heat exchangers 2 are connected in parallel. The refrigerant flow directions in the refrigerant passages 211 of the two heat exchangers 2 are the same. Two heat exchangers 2 are located same horizontal plane, and two heat exchangers 2 share a feed liquor pipe and an outlet duct, and feed liquor pipe and outlet duct run through same side of casing 1, and then make the inside of machine of indoor set of air conditioning arrange more rationally, reduce the area of machine of indoor set of air conditioning.

Optionally, the inlet line 4 of the air conditioning indoor unit is provided with a valve body. The flow rate of the refrigerant flowing into the indoor unit of the air conditioner is controlled by adjusting the opening of the valve body, so that the outlet temperature is balanced, and the stability of the outlet temperature is further maintained.

Optionally, the liquid inlet pipe and the gas outlet pipe between the two heat exchangers 2 are both provided with a valve body. When the two valve bodies are opened, the refrigerant flows through the first heat exchanger 2 and the second heat exchanger 2; when the two valve bodies are closed, the refrigerant only flows through the second heat exchanger 2, and the first heat exchanger 2 stops running. Valve bodies are arranged on a liquid inlet pipe and a gas outlet pipe which are connected with the two heat exchangers 2, and then the valve bodies on an inlet pipeline 4 of the second heat exchanger 2 are matched, so that the refrigerant quantity in the first heat exchanger 2 and the refrigerant quantity in the second heat exchanger 2 can be adjusted no matter the air conditioner is in a refrigerating working condition or a heating working condition, the refrigerant quantity of each pipeline in an indoor unit of the air conditioner is controlled, the air conditioner is always maintained in a refrigerant quantity preset threshold range, and the heat exchange performance is exerted to a greater extent. And, through adjusting the aperture of two valve bodies, also can make the user control the heat transfer ability of heat exchanger 2 according to self demand.

Alternatively, the number of the refrigerant passages 211 in the two heat exchangers 2 is equal. By arranging the refrigerant channels 211 with the same number, the balance of the two heat exchangers 2 can be improved, the refrigerant is more uniformly distributed between the two heat exchangers 2 in the full-load operation process of the indoor unit of the air conditioner, and the heat exchange efficiency of the indoor unit of the air conditioner is improved.

Optionally, the inner walls of the refrigerant channels 211 are provided with internal threads. Through setting up the heat transfer area of contact that the internal thread can increase the refrigerant in refrigerant passageway 211, more abundant carry out heat exchange, the radiating effect is good.

Alternatively, the air flowing out of the fan 3 flows perpendicular to the flow of the refrigerant in the refrigerant channels 211. The plurality of refrigerant channels 211 are perpendicular to the plurality of fins 22, the fan 3 and the heat exchanger 2 are located on the same horizontal plane, and the wind direction of the wind blown out from the center of the fan 3 is parallel to the fins 22, so that the wind resistance is reduced, and the fins 22 can exchange heat better.

Alternatively, the material of the base plate 21 and the plurality of fins 22 includes a highly thermally conductive material, such as an aluminum material. The heat exchange effect of the high-heat-conductivity material is good, the refrigerant in the refrigerant channels 211 can be conducted to the base plate 21 in a heat mode, the air at the center of the fan 3 can blow over the fins 22 from the two sides, heat is released to the air through forced convection heat dissipation, and the heat dissipation effect is better.

Optionally, the plurality of fins 22 are flat sheets or corrugated sheets. The fins 22 may be provided with louvers spaced along the length of the fins 22. The disturbance of air flow can be effectively enhanced, the heat transfer coefficient of the air side is improved, and the heat conduction is facilitated.

Optionally, the indoor unit of the air conditioner further includes at least two water trays 6, and the water trays 6 are located below the heat exchanger 2 and correspond to the heat exchanger 2 one to one. Specifically, a first water pan is arranged below the first heat exchanger, a second water pan is arranged below the second heat exchanger, and the two water pans 6 are provided with drain pipes 7. The first water pan and the second water pan are communicated through a first drain pipe, and the second water pan is provided with a second drain pipe. The second drain pipe penetrates the side of the case 1. A large amount of condensed water can be accumulated on the heat exchanger 2, because the first water receiving tray and the second water receiving tray are respectively arranged below the first heat exchanger and the second heat exchanger, the condensed water on the first heat exchanger and the second heat exchanger can flow to the water receiving tray 6 and is discharged through the drain pipe 7, the double water receiving trays 6 can simultaneously drain the two heat exchangers 2, the condensed water and the defrosting water are more conveniently discharged, and the influence of the drain pipe 7 on the appearance of the air conditioner is reduced.

Specifically, when the air conditioner operates in a heating working condition, the compressor discharges high-temperature and high-pressure steam refrigerants, the condensed liquid refrigerants enter the throttling element through the heat exchanger 2 of the indoor unit of the air conditioner, and the liquid refrigerants are changed into low-temperature and low-pressure refrigerants after throttling. And the condensed water generated on the surface of the heat exchanger 2 and the water generated by defrosting flow into the first water pan and the second water pan and are discharged out of the indoor unit of the air conditioner through a second water discharge pipe of the second water pan.

Optionally, the plurality of refrigerant channels 211 of the heat exchanger 2 are arranged in a line or in an array. The multiple refrigerant channels 211 are arranged in a straight line, the thickness of the base plate 21 of the heat exchanger 2 is smaller under the condition that the pipe diameter of the maximum refrigerant channel 211 is met, and the occupied space of the indoor unit of the air conditioner is small. The plurality of refrigerant channels 211 are arranged in an array, and compared with the linear arrangement, the heat exchange area between the refrigerant circulating in the plurality of refrigerant channels 211 of the heat exchanger 2 and the substrate 21 is increased, so that the heat exchange efficiency of the heat exchanger 2 is increased.

Optionally, the base plate 21 comprises a blown plate. The base plate 21 of the first heat exchanger 2 comprises a first inflatable plate and the base plate 21 of the second heat exchanger 2 comprises a second inflatable plate. The plurality of refrigerant passages 211 are inflation lines of the inflation plate. The blowing plate enables the heat dissipation of the substrate 21 to be more uniform, and the temperature uniformity of the substrate 21 is improved.

Optionally, the base plate 21 comprises an aluminum plate and a blown plate. The plurality of refrigerant passages 211 are refrigerant tubes penetrating the aluminum plate, and the plurality of fins 22 are integrally formed with the aluminum plate. The aluminum plate and the blowing plate can be connected in a welding mode or in a screw and bolt connection mode. The aluminum plate plays roles of fixing, heat storage and heat transfer.

Optionally, the housing 1 is provided with at least two air intakes 11, and at least two air outlets 12. The air inlet 11 of the housing 1 includes a first air inlet 11 and a second air inlet 11, and the air outlet 12 includes a first air outlet 12 and a second air outlet 12. The first fan 3 is used for assisting in heat dissipation through air circulation of the first air inlet 11; the second fan 3 is used for assisting in heat dissipation through air circulation of the second air inlet 11. When a heating device in the air conditioner works, a large amount of heat can be generated, and if the heat dissipation environment does not meet the requirement, the components are easy to damage. And first air outlet 12 and second air outlet 12 carry out the heat dissipation to heating element and part and handle, and the radiating effect is better, and has improved the heat transfer effect of heat exchanger 2.

As an example, a plurality of fins 22 are provided at the bottom of the base plate 21 of the heat exchanger 2, a water pan 6 is provided below the plurality of fins 22, and a drain pipe of the water pan 6 penetrates through a right side plate of the housing 1. And the air-conditioning indoor unit discharges the condensed water on the two heat exchangers 2 out of the indoor unit through a drain pipe. The bottom plate of the shell 1 is provided with an air outlet 12, and the air outlet 12 is positioned below the fan 3. The lower opening of the indoor unit of the air conditioner is ventilated, so that dust can be effectively prevented, and the service life of the indoor unit of the air conditioner is prolonged. The back plate of the shell 1 is provided with an air inlet 11, and the air inlet 11 is positioned right behind the heat exchanger 2. One ends of inlet pipelines 4 of the two heat exchangers 2 are communicated through liquid inlet pipes, and the liquid inlet pipes are positioned right behind the heat exchangers 2; one ends of the outlet pipelines 5 of the two heat exchangers 2 are communicated through an air outlet pipe, and the air outlet pipe is positioned right in front of the heat exchangers 2; wherein, the air outlet pipe and the liquid inlet pipe penetrate through the right side plate. Through spacing setting up outlet duct and feed liquor pipe, not only make the house steward length shorten, save the cost, can save air conditioning indoor set space as far as possible moreover. The heights of the plurality of fins 22 of the two heat exchangers 2 decrease from left to right, and the pitches of the plurality of fins 22 increase from left to right. The pipe diameters of the refrigerant channels 211 are sequentially reduced from front to back. Through the combined arrangement mode of the refrigerant channels 211 and the fins 22, thermal contact resistance is effectively avoided, and the performance of the heat exchanger 2 is improved.

Optionally, the indoor unit of the air conditioner further comprises a control unit for controlling the opening degree of the valve bodies at the inlet ends of the inlet pipes 4 of the first heat exchanger and the second heat exchanger. The first heat exchanger and the second heat exchanger are connected in parallel in a refrigerant flow path in the air-conditioning indoor unit. When the refrigeration mode is adjusted to be high-grade by a user, opening an inlet end valve body of an inlet pipeline of the first heat exchanger and an inlet end valve body of an inlet pipeline of the second heat exchanger, and improving the heat exchange efficiency of the indoor unit of the air conditioner; when a user adjusts the refrigeration mode to be a middle gear, controlling an inlet end valve body of an inlet pipeline of the first heat exchanger to close, or controlling an inlet end valve body of an inlet pipeline of the second heat exchanger to close; when the user adjusts the refrigeration mode to be low, the inlet end valve body of the inlet pipeline of the first heat exchanger and the inlet end valve body of the inlet pipeline of the second heat exchanger are controlled to be closed, and only the fan 3 and the plurality of fins 22 of the heat exchanger 2 are used for air cooling heat exchange.

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 (10)

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

a shell body, a plurality of first connecting rods and a plurality of second connecting rods,

at least two heat exchangers arranged in the shell transversely side by side; and the combination of (a) and (b),

the at least two fans are respectively arranged on the side parts of the heat exchanger;

wherein, the heat exchanger includes:

a substrate, wherein a plurality of refrigerant channels penetrate through the substrate;

the inlet pipeline is communicated with one ports of the plurality of refrigerant channels; and the combination of (a) and (b),

and the outlet pipeline is communicated with the other ports of the plurality of refrigerant channels.

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

and the spaces of the plurality of refrigerant channels are sequentially increased along the direction from the fan to the heat exchanger.

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

and the pipe diameters of the plurality of refrigerant channels are sequentially reduced along the direction from the fan to the heat exchanger.

4. An indoor unit of an air conditioner according to claim 1, wherein the heat exchanger further comprises:

and the plurality of fins are arranged on the surface of the substrate.

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

and a preset included angle is formed between the plurality of fins and the surface of the substrate.

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

in the direction from the inlet pipeline to the outlet pipeline, the fin intervals are sequentially reduced.

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

and in the direction from the inlet pipeline to the outlet pipeline, the heights of the fins are sequentially increased.

8. An indoor unit of an air conditioner according to any one of claims 4 to 7,

the fins are positioned on one side or two sides of the refrigerant channels.

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

the at least two heat exchangers are connected in parallel.

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

the air flowing out of the fan is perpendicular to the flow direction of the refrigerants in the refrigerant channels.

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