CN221055122U - Indoor unit of air conditioner - Google Patents

Abstract

The application discloses an air conditioner indoor unit, and belongs to the technical field of air treatment. The indoor unit of the air conditioner comprises: a housing; an indoor heat exchanger provided in the housing for exchanging heat with air passing therethrough; a refrigerant line assembly connected to the indoor heat exchanger, the refrigerant line assembly including an expansion valve; the refrigerant line assembly does not intersect the indoor heat exchanger in a windward projection of the indoor heat exchanger. The air conditioner indoor unit can reduce the internal resistance of the air duct, improve the air quantity and reduce the noise.

Description

Indoor unit of air conditioner

Technical Field

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

Background

The refrigerating and heating functions of the indoor unit of the air conditioner are regulated through the heat exchange capacity of the heat exchanger and air, and the electronic expansion valve is used as an important component of the heat exchange system of the indoor unit and is used for controlling the flow of the refrigerant, regulating the temperature and the pressure of the heat exchanger and realizing the normal operation of the air conditioning system.

The electronic expansion valve is usually connected with the indoor unit heat exchanger through a copper pipe, and is usually placed at the front side of the heat exchanger in the prior art, so that air flow passing through the heat exchanger is blocked, the air quantity of the indoor unit is reduced, the rotating speed is required to be increased to increase the air quantity in order to meet the refrigerating and heating capacities of the indoor unit, and noise is increased.

Disclosure of utility model

The application provides an air conditioner indoor unit which can reduce the internal resistance of an air duct, improve the air quantity and reduce the noise.

In one aspect of the present application, an indoor unit of an air conditioner includes: a housing; a fan assembly for driving air flow; an indoor heat exchanger provided in the housing for exchanging heat with air passing therethrough; a refrigerant line assembly connected to the indoor heat exchanger, the refrigerant line assembly including an expansion valve; the refrigerant line assembly does not intersect the indoor heat exchanger in a windward projection of the indoor heat exchanger.

In the technical scheme, on the projection of the windward side of the indoor heat exchanger, the refrigerant pipeline component is not intersected with the indoor heat exchanger, so that air flow is not blocked by the refrigerant pipeline component when flowing to the indoor heat exchanger, air quantity cannot be lost, the fan component is not required to increase the rotating speed to ensure the air quantity, and noise caused by the operation of the fan component is naturally reduced.

In some embodiments, the axis of the expansion valve is disposed vertically.

In some embodiments, the refrigerant line assembly further comprises a tap, a tap port of the tap being connected to the indoor heat exchanger, a tap port of the tap being connected to the expansion valve; the axis of the shunt head and the axis of the expansion valve are vertically arranged; the pipeline between the shunt head and the expansion valve comprises: the first straight pipe section extends vertically and is connected with the main port of the flow dividing head; and the second straight pipe section extends vertically and is connected with the expansion valve.

In some embodiments, the conduit between the diverter head and the expansion valve further comprises third and fourth vertically extending straight pipe sections; the third straight pipe section is connected between the first straight pipe section and the fourth straight pipe section, and the fourth straight pipe section is connected between the third straight pipe section and the second straight pipe section; the refrigerant line assembly further comprises: the first filter is arranged on the second straight pipe section or the third straight pipe section.

In some embodiments, the conduit diameter between the shunt head and the first filter is greater than the conduit diameter between the first filter to the expansion valve; the first filter is arranged on the third straight pipe section.

In some embodiments, the third straight tube section is further from the indoor heat exchanger than the first straight tube section, the fourth straight tube section is closer to the indoor heat exchanger than the third straight tube section, and the second straight tube section is further from the indoor heat exchanger than the fourth straight tube section.

In some embodiments, on projection of the top plate of the housing, the axes of the first straight tube section are denoted as a, the axes of the third straight tube section are denoted as B, the axes of the fourth straight tube section are denoted as C, the axes of the second straight tube section are denoted as D, and the line segments AB, BC and CD are substantially connected in a "Z" shape.

In some embodiments, the angle α between the line of AB and the line of CD satisfies: alpha is more than or equal to 0 DEG and less than or equal to 20 deg.

In some embodiments, the refrigerant line assembly further comprises: the first pipe joint is connected with the expansion valve; the pipeline between the first pipe joint and the expansion valve is transversely arranged.

In another aspect of the present application, an indoor unit of an air conditioner includes: a housing; the middle partition plate is arranged in the shell to divide the space in the shell into a first air cavity and a second air cavity; the fan assembly is arranged in the first air cavity and used for driving air to flow; an indoor heat exchanger arranged in the second air chamber and used for exchanging heat with air passing through the indoor heat exchanger; a refrigerant line assembly connected to the indoor heat exchanger, the refrigerant line assembly including an expansion valve; the first air cavity and the second air cavity are distributed along a first direction, the second air cavity can be divided into a first installation area and a second installation area which are distributed along a second direction, and the first direction and the second direction are both transverse and vertical; the indoor heat exchanger is disposed in the first mounting area and the refrigerant line assembly is disposed in the second mounting area.

In the technical scheme, the air flow direction at the indoor heat exchanger is a first direction, the refrigerant pipeline components and the indoor heat exchanger are distributed according to a second direction, the second direction is perpendicular to the first direction, and the air flow is not blocked by the refrigerant pipeline components when flowing through the indoor heat exchanger according to the first direction, so that the air quantity cannot be lost.

Drawings

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

FIG. 2 illustrates a cross-sectional view of an air conditioning indoor unit according to some embodiments, with arrows illustrating air flow;

FIG. 3 illustrates a top view of an air conditioning indoor unit with a top plate omitted according to some embodiments;

FIG. 4 illustrates a top view of an indoor heat exchanger and refrigerant line assembly of an air conditioning indoor unit according to some embodiments;

FIG. 5 illustrates a perspective view of an indoor heat exchanger and refrigerant line assembly of an air conditioning indoor unit according to some embodiments;

FIG. 6 illustrates a side view of an indoor heat exchanger and refrigerant line assembly of an air conditioning indoor unit according to some embodiments;

fig. 7 and 8 illustrate bottom views of refrigerant circuit assemblies of an air conditioning indoor unit according to some embodiments;

Fig. 9 illustrates a perspective view of a refrigerant circuit assembly of an air conditioning indoor unit according to some embodiments;

Fig. 10 illustrates a comparison of air volume of an air conditioning indoor unit and a prior art air conditioning indoor unit according to some embodiments;

In the above figures: 10. a housing; 11. an air return port; 12. an air outlet; 13. a bottom plate; 14. a top plate; 15. a rear side plate; 16. a front side plate; 17. a first air chamber; 18. a second air chamber; 181. a first mounting area; 182. a second mounting area; 19. a right side plate; 20. an indoor heat exchanger; 21. a water receiving tray; 30. a fan assembly; 40. a middle partition plate; 41. a vent; 50. a refrigerant line assembly; 51. an expansion valve; 52. a shunt head; 531. a first straight pipe section; 532. a second straight tube section; 533. a third straight pipe section; 534. a fourth straight tube section; 54. a first filter; 55. a second filter; 56. a first pipe joint; 57. a second pipe joint; 58. collecting pipes; 60. and (3) a water pump.

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 orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated 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 "a first", "a second" or the like may include one or more such features, either explicitly or implicitly. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is 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 or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication 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 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. Throughout the cycle, the air conditioner may adjust the temperature of the indoor space.

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.

Referring to fig. 1 and 2, an air conditioner indoor unit according to an embodiment of the present application includes: a housing 10, an indoor heat exchanger 20, and a fan assembly 30.

The housing 10 forms the general appearance of an air conditioning indoor unit. The casing 10 is formed with an air return port 11 and an air outlet port 12, and air can enter the casing 10 through the air return port 11 and be blown out through the air outlet port 12.

The housing 10 includes a bottom plate 13, a top plate 14, a rear side plate 15, a front side plate 16, a left side plate, and a right side plate 19. The top plate 14 forms the top structure of the air conditioner indoor unit, the bottom plate 13 forms the bottom structure of the air conditioner indoor unit, the bottom plate 13 is opposite to the top plate 14 up and down, the back side plate 15 is provided with the air return opening 11, and the front side plate 16 is provided with the air outlet 12; four side plates are connected between the bottom plate 13 and the top plate 14, and left and right side plates 19 are respectively positioned at left and right sides of the indoor unit of the air conditioner.

The air conditioning indoor unit is also internally provided with a middle partition plate 40, the middle partition plate 40 is vertically connected in the shell 10 and divides the space in the shell 10 into a first air cavity 17 and a second air cavity 18, the first air cavity 17 is positioned at the rear side, and the second air cavity 18 is positioned at the front side.

The air outlet 12 is communicated with the second air cavity 18, and the air return 11 is communicated with the first air cavity 17.

The middle partition plate 40 is provided with a through ventilation opening 41, and the ventilation opening 41 can realize the communication between the first air cavity 17 and the second air cavity 18.

A fan assembly 30 is disposed within the first air chamber 17 of the housing 10 for forcing air to flow from the return air inlet 11 to the air outlet 12.

The indoor heat exchanger 20 is disposed in the casing 10 and is disposed on an air moving path from the return air inlet 11 to the outlet air outlet 12. The indoor heat exchanger 20 serves to absorb heat from or transfer heat to air introduced into the casing 10. A water tray 21 is provided below the indoor heat exchanger 20 to collect moisture condensed in the indoor heat exchanger 20.

Specifically, the indoor heat exchanger 20 is disposed in the second air chamber 18 corresponding to the air outlet 12.

Referring to fig. 3 to 6, the air conditioner indoor unit further includes a refrigerant pipe assembly 50 for enabling refrigerant communication between the indoor heat exchanger 20 and the air conditioner outdoor unit.

The refrigerant line assembly 50 includes an expansion valve 51, and the expansion valve 51 is connected to the indoor heat exchanger 20 through a refrigerant pipe, such as a copper pipe.

The expansion valve 51 decompresses the refrigerant by its own throttle operation, and the expansion valve 51 can also adjust the amount of the refrigerant supplied to the indoor heat exchanger 20 so that the indoor heat exchanger 20 can sufficiently exchange heat. The expansion valve 51 adjusts the amount of refrigerant by adjusting the opening degree.

In the prior art, the expansion valve 51 is generally located on the windward side of the indoor heat exchanger 20, so that the expansion valve 51 blocks the air flow to a certain extent, resulting in a reduction in the air volume, and in order to satisfy the cooling/heating capacity of the air conditioner, the rotation speed of the fan assembly needs to be increased to increase the air volume, which in turn results in an increase in noise.

In order to solve this technical problem, the present application improves the structure of the refrigerant line assembly 50.

On the windward projection of the indoor heat exchanger 20, the refrigerant pipeline assembly 50 is not intersected with the indoor heat exchanger 20, so that the air flow is not blocked by the refrigerant pipeline assembly 50 when flowing to the indoor heat exchanger 20, the air quantity is not lost, the fan assembly 30 is not required to increase the rotating speed to ensure the air quantity, and the noise caused by the operation of the fan assembly 30 is naturally reduced.

In another embodiment, the air flows in the first direction, i.e., the front-to-rear direction, of the second air chamber 18, and the refrigerant line assembly 50 is disposed on one side of the second direction of the indoor heat exchanger 20, i.e., the left-to-right direction, i.e., the refrigerant line assembly 50 is disposed on the left or right side of the indoor heat exchanger 20, in order to avoid blocking the air flow by the refrigerant line assembly 50. In the present example, the refrigerant line assembly 50 is illustrated as being located on the right side of the indoor heat exchanger 20.

Specifically, the second wind chamber 18 may be divided into a first installation region 181 and a second installation region 182 arranged left and right. The indoor heat exchanger 20 is disposed in the first mounting area 181 and the refrigerant line assembly 50 is disposed in the second mounting area 182.

The second installation area 182 is further provided with a water pump 60, and the water pump 60 is fixedly connected with the side wall of the housing 10 for discharging condensed water in the water pan 21.

The water pump 60 and the refrigerant line assembly 50 are arranged in a front-to-rear direction within the second mounting area 182.

The present application also designs the refrigerant pipe assembly 50 such that the refrigerant pipe assembly 50 is more compact in structure, and can be smoothly placed in the second installation area 182 without increasing the volume of the second installation area 182, since the expansion valve 51 must occupy the right space of the indoor heat exchanger 20 when being moved to the right side of the indoor heat exchanger 20.

The axis of the expansion valve 51 is vertically arranged, so that on one hand, the impact of the refrigerant in the pipeline on the internal valve needle of the expansion valve 51 during flowing can be reduced, and on the other hand, the occupied space of the expansion valve 51 in the transverse direction can be saved, because the expansion valve 51 has a larger size in the axis direction, and if the expansion valve 51 is transversely arranged, the occupied transverse space is relatively large.

According to an embodiment of the present application, the refrigerant circuit assembly 50 also includes a tap 52. The tap 52 is used to split the refrigerant into multiple strands or to pool the multiple strands of refrigerant into one strand.

The split header 52 is connected between the expansion valve 51 and the indoor heat exchanger 20 through a copper pipe. Specifically, the refrigerant pipe of the indoor heat exchanger 20 is formed with a plurality of first ports and a plurality of second ports on the right side, and when the air conditioner indoor unit is operated, the refrigerant flows into the indoor heat exchanger 20 from one of the first ports and the second ports, and flows out of the indoor heat exchanger 20 from the other of the first ports and the second ports.

The split port of the split header 52 is connected to the first port of the indoor heat exchanger 20, and the total port of the split header 52 is connected to one port of the expansion valve 51.

In some embodiments of the present application, the conduit between the diverter head 52 and the expansion valve 51 includes a first straight tube segment 531 and a second straight tube segment 532 extending in a vertical direction. The first straight pipe section 531 is connected to the main port of the split head 52, and the second straight pipe section 532 is connected to the expansion valve 51.

In the application, the flow dividing head 52, the expansion valve 51, the first straight pipe section 531 and the second straight pipe section 532 are all vertically arranged, so that most of the path of the refrigerant between the flow dividing head 52 and the expansion valve 51 is vertical, the vertical flow is the same as the gravity direction, the flow of the refrigerant is more facilitated, in addition, the vertical arrangement mode can further enable the structure of the refrigerant pipeline assembly 50 in the transverse direction to be more compact, and the transverse space occupied by the refrigerant pipeline assembly is reduced.

The first straight pipe section 531 is located at the lower end of the diverter 52, and the second straight pipe section 532 is located at the lower end of the expansion valve 51, so that the diverter 52 and the expansion valve 51 are prevented from being immersed in the condensed water in the water pan 21.

A first filter 54 is further disposed between the split head 52 and the expansion valve 51, and is used for filtering the refrigerant, so as to ensure smooth flow of the refrigerant.

If the first filter 54 is disposed on the first straight pipe section 531 or the second straight pipe section 532, the height of the section is raised, which affects the height dimension of the indoor unit, so that the pipe between the diverter 52 and the expansion valve 51 further includes the third straight pipe section 533 and the fourth straight pipe section 534 in order to ensure that the height of the indoor unit is unchanged. The third straight pipe section 533 is connected to the lower end of the first straight pipe section 531 by a bent pipe section, the upper ends of the third straight pipe section 533 and the fourth straight pipe section 534 are connected by a bent pipe section, and the lower ends of the fourth straight pipe section 534 and the second straight pipe section 532 are connected by a bent pipe section. The first filter 54 is disposed on the third straight tube section 533 or on the fourth straight tube section 534.

The third straight pipe section 533 and the fourth straight pipe section 534 are vertically extended, and the axis of the first filter 54 is vertically arranged, so that the flow of the refrigerant is facilitated, the problem that the transverse size is increased when the refrigerant is transversely arranged is avoided, and the air conditioner has the advantage of small occupied space.

According to an embodiment of the present application, the conduit diameter between the diverter head 52 and the first filter 54 is greater than the conduit diameter of the other portions.

If the first filter 54 is disposed on the fourth straight tube section 534, the diameters of the first straight tube section 531 and the third straight tube section 533 between the split head 52 and the first filter 54 are both thicker, and if the first filter 54 is disposed on the third straight tube section 533, the first filter 54 is located closer to the split head 52 on the tube path, so that the length of the thick tube can be reduced, and the cost can be saved.

In some embodiments of the present application, referring to fig. 7, on the projection of the top plate of the housing 10, the axis of the first straight tube section 531 is denoted as a, the axis of the third straight tube section 533 is denoted as B, the axis of the fourth straight tube section 534 is denoted as C, the axis of the second straight tube section 532 is denoted as D, and the line segments AB, BC, CD are substantially connected in a "Z" shape.

The zigzag arrangement makes the piping structure between the flow dividing head 52 and the expansion valve 51 more compact, because if the piping between the flow dividing head 52 and the expansion valve 51 is unfolded, for example, in a horizontal direction, it will necessarily have a relatively large size in the horizontal direction, and if it is in a front-rear direction, it will have a relatively large size in the front-rear direction.

Since the flow dividing header 52 is connected to the indoor heat exchanger 20, the first straight pipe section 531 may be located farther to the left, the third straight pipe section 533 is located farther from the indoor heat exchanger 20 than the first straight pipe section 531, the fourth straight pipe section 534 is located closer to the indoor heat exchanger 20 than the third straight pipe section 533, and the second straight pipe section 532 is located farther from the indoor heat exchanger 20 than the fourth straight pipe section 534.

In some embodiments of the present application, referring to fig. 8, the angle α between the line along which ab is located and the line along which CD is located satisfies: alpha is more than or equal to 0 DEG and less than or equal to 20 deg.

0.Ltoreq.α.ltoreq.20, e.g. α=10, the angle between AB and CD being relatively small, may further allow for a relatively compact flow dividing head 52 to expansion valve 51. If the angle between AB and CD is relatively large, indicating that the shunt head 52 is relatively far from the expansion valve 51, the space occupied by both in the second mounting region 182 is increased.

According to an embodiment of the present application, referring to fig. 9, one end of the expansion valve 51 is connected to the split head 52, and the other end of the expansion valve 51 is connected in series with the second filter 55 and then connected to the first pipe joint 56. The first pipe joint 56 is fixed to the right side wall of the casing 10 for connecting an air conditioner outdoor unit.

The arrangement of the line between the expansion valve 51 and the first pipe connection 56 is laterally arranged, whereby the influence on the machine height can be avoided.

The refrigerant line assembly also includes a header 58 and a second tube fitting 57. The branch port of the header 58 is connected to the second port of the indoor heat exchanger 20, and the trunk port of the header 58 is connected to the second pipe joint 57. A second pipe joint 57 is also fixed to the right side wall of the casing 10 for connecting an air conditioner outdoor unit.

The expansion valve 51 is provided on the windward side of the indoor heat exchanger 20 in the conventional model. The comparison experiment is carried out on the prior art model and the application model, and referring to fig. 10, the abscissa is the gear of the fan, the ordinate is the air quantity, in each group of bar charts, the first column represents the air quantity of the prior art model, and the second column represents the air quantity of the application model, so that the air quantity of the application is about 6% higher than the air quantity of the prior art model under the same fan rotating speed. Therefore, the air conditioner indoor unit has the advantages of lower rotating speed of the fan, lower generated noise and low noise on the basis of ensuring the air quantity.

In the present application, on the windward projection of the indoor heat exchanger 20, the refrigerant pipe assembly 50 is not intersected with the indoor heat exchanger 20, so that the air flow is not blocked by the refrigerant pipe assembly 50 when flowing to the indoor heat exchanger 20, the air quantity is not lost, the fan assembly 30 is not required to increase the rotation speed to ensure the air quantity, and the noise caused by the operation of the fan assembly 30 is naturally reduced.

In the present application, the air flow direction at the indoor heat exchanger 20 is a first direction, the refrigerant pipe assembly 50 and the indoor heat exchanger 20 are arranged in a second direction perpendicular to the first direction, and the air flow is not blocked by the refrigerant pipe assembly 50 when passing through the indoor heat exchanger 20 in the first direction, so that the air volume is not lost.

In the application, the axis of the expansion valve 51 is vertically arranged, so that on one hand, the impact of the refrigerant in the pipeline on the inner valve needle of the expansion valve 51 during flowing can be reduced, and on the other hand, the occupied space of the expansion valve 51 in the transverse direction can be saved.

In the application, the first straight pipe section 531, which is the pipeline connected with the split head 52, the second straight pipe section 532, which is the pipeline connected with the expansion valve 51, the split head 52 and the expansion valve 51 are all vertically arranged, so that most of the paths of the refrigerant between the split head 52 and the expansion valve 51 are vertical, the vertical flow is the same as the gravity direction, the flow of the refrigerant is more facilitated, in addition, the vertical arrangement mode can further enable the structure of the refrigerant pipeline assembly 50 in the left-right direction to be more compact, and the occupied transverse space of the refrigerant pipeline assembly is reduced.

In the present application, the third straight pipe section 533 and the fourth straight pipe section 534 between the split flow head 52 and the expansion valve 51 are vertically extended, and the axis of the first filter 54 is vertically arranged, so that the flow of the refrigerant is facilitated, the problem that the transverse size is increased during the transverse arrangement is avoided, and the present application has the advantage of small occupied space.

In the application, the pipeline between the flow dividing head 52 and the first filter 54 is thicker, and the first filter 54 is arranged on the third straight pipe section 533 and is closer to the flow dividing head 52, so that the length of the thick pipeline can be reduced, and the cost can be saved.

In the application, the pipeline between the flow dividing head 52 and the expansion valve 51 is connected into a Z shape on the projection of the top plate, so that the pipeline structure between the flow dividing head 52 and the expansion valve 51 is more compact.

In the application, the included angle alpha between the straight line where AB is located and the straight line where CD is located on the projection of the pipeline between the shunt head 52 and the expansion valve 51 on the top plate meets the following conditions: alpha is more than or equal to 0 DEG and less than or equal to 20 DEG, so that the space between the shunt head 52 and the expansion valve 51 can be further compact, and the shunt head 52 is prevented from being far away from the expansion valve 51.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the 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 (10)

1. An air conditioning indoor unit, comprising:

A housing;

the fan assembly is arranged in the shell and used for driving air to flow;

An indoor heat exchanger for exchanging heat with air passing therethrough;

a refrigerant line assembly connected to the indoor heat exchanger, the refrigerant line assembly including an expansion valve;

The refrigerant line assembly does not intersect the indoor heat exchanger in a windward projection of the indoor heat exchanger.

2. An air conditioning indoor unit according to claim 1, wherein the axis of the expansion valve is vertically disposed.

3. The indoor unit of claim 1, wherein the refrigerant line assembly further comprises a tap, a tap port of the tap being connected to the indoor heat exchanger, a main port of the tap being connected to the expansion valve; the axis of the shunt head and the axis of the expansion valve are vertically arranged;

the pipeline between the shunt head and the expansion valve comprises:

The first straight pipe section extends vertically and is connected with the total port of the flow dividing head;

and the second straight pipe section extends vertically and is connected with the expansion valve.

4. An indoor unit for an air conditioner according to claim 3, wherein the piping between the diverter head and the expansion valve further comprises third and fourth vertically extending straight pipe sections;

The third straight pipe section is connected between the first straight pipe section and the fourth straight pipe section, and the fourth straight pipe section is connected between the third straight pipe section and the second straight pipe section;

The refrigerant line assembly further comprises:

The first filter is arranged on the second straight pipe section or the third straight pipe section.

5. The indoor unit of claim 4, wherein a pipe diameter between the split head and the first filter is greater than a pipe diameter between the first filter and the expansion valve;

The first filter is arranged on the third straight pipe section.

6. The indoor unit of claim 4, wherein the third straight pipe section is farther from the indoor heat exchanger than the first straight pipe section, the fourth straight pipe section is closer to the indoor heat exchanger than the third straight pipe section, and the second straight pipe section is farther from the indoor heat exchanger than the fourth straight pipe section.

7. The indoor unit of claim 4, wherein on a projection of the top plate of the housing, an axis of the first straight pipe section is denoted as a, an axis of the third straight pipe section is denoted as B, an axis of the fourth straight pipe section is denoted as C, an axis of the second straight pipe section is denoted as D, and line segments AB, BC, and CD are substantially connected in a "Z" shape.

8. The indoor unit of claim 7, wherein the angle α between the line along which AB is located and the line along which CD is located is: alpha is more than or equal to 0 DEG and less than or equal to 20 deg.

9. The indoor unit of claim 1, wherein the refrigerant line assembly further comprises:

The first pipe joint is connected with the expansion valve;

The pipeline between the first pipe joint and the expansion valve is transversely arranged.

10. An air conditioning indoor unit, comprising:

A housing;

The middle partition plate is arranged in the shell to divide the space in the shell into a first air cavity and a second air cavity;

the fan assembly is arranged in the first air cavity and used for driving air to flow;

An indoor heat exchanger arranged in the second air cavity and used for exchanging heat with air passing through the indoor heat exchanger;

a refrigerant line assembly connected to the indoor heat exchanger, the refrigerant line assembly including an expansion valve;

The first air cavity and the second air cavity are arranged along a first direction, the second air cavity can be divided into a first installation area and a second installation area which are arranged along a second direction, and the first direction and the second direction are both transverse and vertical; the indoor heat exchanger is arranged in the first installation area, and the refrigerant pipeline assembly is arranged in the second installation area;

The refrigerant line assembly does not intersect the indoor heat exchanger in a windward projection of the indoor heat exchanger.