CN221146644U

CN221146644U - Indoor unit of air conditioner

Info

Publication number: CN221146644U
Application number: CN202322221733.5U
Authority: CN
Inventors: 谢宝臣
Original assignee: Hisense Air Conditioning Co Ltd
Current assignee: Hisense Air Conditioning Co Ltd
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2024-06-14
Anticipated expiration: 2033-08-17

Abstract

The utility model provides an air conditioner indoor unit which can solve the problem of channeling between a fan centrifugal unit and a through-flow unit in the prior art. The air conditioner indoor unit comprises a shell, a fan, a first partition board, a second partition board and an indoor air outlet; a heat exchange air duct is arranged in the shell, and the fan is arranged in the heat exchange air duct; the first partition plate is arranged on the fan; the second baffle is provided with a wind shielding part, a step part and a flanging, the wind shielding part is connected with the shell, the step part is connected with one end of the wind shielding part, which is close to the first baffle, and the flanging is connected with one end of the step part, which is close to the axis of the fan. Through the baffle structure between the through-flow unit and the centrifugal unit, the cross flow of the centrifugal unit to the through-flow unit can be effectively prevented, and the air supply distance and the wind resistance of the indoor unit of the air conditioner are improved.

Description

Indoor unit of air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a structural improvement of an outdoor unit of an air conditioner.

Background

At present, the indoor unit of the hanging air conditioner is generally arranged on a wall body or other supporting structures, the indoor unit of the hanging air conditioner generally comprises a shell, the length direction of the shell is generally arranged along the horizontal direction, a strip-shaped indoor air outlet which is arranged along the length direction of the shell is generally arranged on the shell, an indoor air inlet is further formed in the shell, a heat exchanger and a heat exchange fan are arranged in the shell, and indoor air enters the shell through the indoor air inlet and flows out of the indoor air outlet after exchanging heat with the heat exchanger.

The traditional hanging type air conditioner indoor unit is usually only provided with a through-flow air duct, because the blades of the through-flow fan only work in the air outlet direction, a plurality of blades in the air inlet direction do not work and cannot provide the effect of air flow acceleration, the through-flow unit in the fan has poor static pressure resistance and a short air supply distance, the centrifugal unit is axially air-in and radially air-out, all the blades can participate in accelerating air flow and can do work, the air outlet speed of the general centrifugal unit is high, the air outlet distance is far as the working capacity of the centrifugal unit is high, the air conditioner indoor unit integrating the centrifugal blades on the through-flow fan is designed in the prior art, and the air flow blown by centrifugal blowing drives the air flow blown out by the centrifugal air flow, so that the air supply distance can be integrally improved, the air resistance of the whole machine is enhanced, and the quick refrigerating and heating effects of the whole machine are improved.

However, because the air flow blown out by the centrifugal unit is greater than the external atmospheric pressure, the acting capability of the through-flow unit is weaker, and the air flow blown out by the through-flow unit is lower than the external atmospheric pressure, the through-flow unit and the centrifugal unit are combined together to be air-out, and axial cross flow is easy to occur at the combined position, namely the air flow blown out by the centrifugal unit may not be blown out of the centrifugal unit due to the action of pressure difference and is blown into the through-flow unit.

Disclosure of utility model

In view of the above problems, the utility model provides an air conditioner indoor unit, which can effectively prevent the problem of cross flow caused by uneven pressure of air outlet air flow between a through-flow unit and a centrifugal unit by arranging a baffle structure between the centrifugal unit and the through-flow unit, and solves the defects of short air supply distance and weak wind resistance of the air conditioner indoor unit caused by cross flow between the through-flow unit and the centrifugal unit.

In some embodiments of the present application, an indoor unit of an air conditioner is provided, including:

The heat exchange air duct is arranged in the shell along the length direction; an indoor air inlet is formed in the top of the shell, an indoor air outlet is formed in the bottom of the front side of the shell, and the heat exchange air duct is communicated with the indoor air inlet and the indoor air outlet;

The indoor heat exchanger is arranged in the heat exchange air duct and exchanges heat with air passing through the indoor heat exchanger to form heat exchange air flow;

The fan is arranged in the heat exchange air duct, the fan is arranged below the indoor heat exchanger, and indoor air flow enters the shell through the indoor air inlet and is output from the indoor air outlet after being subjected to heat exchange by the indoor heat exchanger;

The first partition plate is arranged on the fan and comprises a through-flow unit and a centrifugal unit, one side of the first partition plate along the axial direction of the fan is provided with the through-flow unit, and the first partition plate is used for limiting air flow from the centrifugal unit to enter the through-flow unit along the axial center of the fan;

The second partition plate comprises a wind shielding part, a step part and a flanging;

The wind shielding part is connected with the shell, and a first gap is formed between the wind shielding part and the first baffle plate;

The step part is connected with one end of the wind shielding part, which is close to the first baffle plate, and extends from one end of the wind shielding part, which is close to the first baffle plate, towards one side of the through-flow unit in the axial direction of the fan; the flange is connected with one end of the step part close to the axis of the fan, and extends to two sides of the length direction of the fan at one end of the step part close to the axis of the fan;

The step and the flange are configured to limit air flow from the centrifugal unit into the through-flow unit through the first gap.

Through setting up first baffle and second baffle between through-flow unit and centrifugal unit can prevent effectively that centrifugal unit from to through-flow unit cross flow, the turn-ups can prevent effectively that the through-flow unit middle part from going out the negative pressure backward flow of wind through-flow unit both sides tip.

In some embodiments of the application, the first baffle is connected to any blade of the fan for restricting air flow from the centrifugal unit into the flow through unit.

In some embodiments of the present application, the second partition is disposed in a ventilation space on a side of the fan near the indoor air outlet, the ventilation space is divided into two parts by the second partition along an axis direction of the fan, and the air outlet of the centrifugal unit and the air outlet of the through-flow unit are converged on the air outlet side of the indoor air outlet.

In some embodiments of the application, a length of a side of the flange, which is close to the first partition, in an axial direction of the fan is smaller than or equal to a length of a side of the flange, which is far away from the first partition, in the axial direction of the fan.

In some embodiments of the present application, a distance between a side of the flange, which is close to the first baffle, and the first baffle is less than or equal to a distance between the wind shielding portion and the first baffle.

In some embodiments of the present application, the length of the through-flow unit along the axial direction is smaller than the length of the centrifugal unit along the axial direction.

In some embodiments of the present application, the indoor unit of an air conditioner further includes:

the rotating shaft is arranged at the axle center of the centrifugal unit;

the bearing is arranged in the shell and positioned at one side of the axial direction of the fan and used for fixing the fan, and the bearing is connected with the first baffle plate through the rotating shaft;

The driving motor is arranged in the shell and positioned at the other side of the axial direction of the fan, and the driving motor drives the through-flow unit and the centrifugal unit to rotate through the rotating shaft.

the air duct shell is arranged at the periphery of the centrifugal unit, a centrifugal air duct opening is formed in the air duct shell in the axial direction of the fan, indoor air enters the air duct through the heat exchanger from the centrifugal air duct opening, and air is discharged from the indoor air outlet through the air duct shell;

And the third partition plate is arranged on the air duct shell, and a second gap is formed between the third partition plate and the indoor heat exchanger.

In some embodiments of the application, the air duct housing includes a protrusion, the protrusion is located at a periphery of the first partition, a portion of the protrusion is located above the centrifugal unit, and another portion of the protrusion is located above the through-flow unit.

In some embodiments of the application, a gap is formed between the first baffle and the boss, and a portion of the first baffle is positioned in a groove inside the boss to restrict airflow from the centrifugal unit into the through-flow unit.

In order to solve the problems of weak static pressure resistance and short air supply distance of a cross flow unit of an indoor air conditioner, the fan comprises the cross flow unit and a centrifugal unit which participate in air supply together; the application can effectively prevent the problem of channeling of the centrifugal unit to the through-flow unit at the position of the heat exchange air duct close to the indoor air outlet by designing the technical scheme of combining the first baffle plate and the second baffle plate; the application designs a technical scheme of combining the first partition plate, the air duct shell and the third partition plate, which can effectively prevent the problem of channeling of air from the centrifugal unit to the through-flow unit at the position of the heat exchange air duct, which is close to the indoor air inlet, because of the difference of air pressure at the position of the through-flow unit and the centrifugal unit, which are close to the indoor air inlet; in order to solve the problem of negative pressure backflow which is easily generated due to the fact that the pressure intensity of the air flow blown out of the middle of the through-flow air channel is high, the second baffle plate is provided with the flanging structure, and the negative pressure backflow of the high-pressure air flow blown out of the middle of the through-flow air channel to the end part of the through-flow air channel can be limited.

The centrifugal unit and the baffle plate structure are additionally arranged, so that centrifugal air outlet and through air outlet can be carried out simultaneously under the condition of the same fan, the integral air supply distance of the air conditioner indoor unit can be effectively improved, the wind resistance of the air conditioner indoor unit is enhanced, and the rapid refrigerating and heating effects of the air conditioner indoor unit are improved.

Other features and advantages of the present utility model will become apparent upon review of the detailed description of the utility model in conjunction with the drawings.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of an air conditioner indoor unit according to an embodiment of the present application;

Fig. 2 is a left side view of an air conditioner indoor unit according to an embodiment of the present application;

fig. 3 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the present application;

fig. 4 is a cross-sectional view of an air conditioner indoor unit according to an embodiment of the present application;

fig. 5 is an exploded view of an indoor unit of an air conditioner according to an embodiment of the present application;

Fig. 6 is a cross-sectional view of an air conditioner indoor unit according to another embodiment of the present application;

FIG. 7 is a perspective view of a fan according to an embodiment of the present application;

FIG. 8 is an enlarged view of portion A of FIG. 7;

FIG. 9 is a perspective view of a fan from another perspective according to an embodiment of the present application;

fig. 10 is an exploded view of a fresh air module according to an embodiment of the present application.

Reference numerals:

10 shells, 11 indoor air inlets and 12 indoor air outlets;

A 20 heat exchanger;

30 heat exchange air channels, 31 through-flow air channels, 311 through-flow air channel air inlet space, 312 through-flow air channel air outlet space, 32 centrifugal air channels, 321 centrifugal air channel air inlet space and 322 centrifugal air channel air outlet space;

40 fans, 41 through-flow units, 411 impellers, 4111 blades, 42 centrifugal units, 43 first partition plates, 44 second partition plates, 441 wind shielding parts, 442 step parts, 4421 first step parts, 4422 second step parts, 443 flanging, 45 third partition plates, 46 fourth partition plates, 47 first movement gaps, 48 second movement gaps, 49 air duct shells and 491 are convex;

51 rotation shaft, 52 bearings.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

The terms "first," "second," and the like, 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" or "a second" may explicitly or implicitly include one or more such feature. 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 either fixedly connected, detachably connected, or integrally connected, for example; 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.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The air conditioner of the present application performs a refrigerating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and refrigerating or heating an indoor space.

The low-temperature low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas into a high-temperature high-pressure state, and the compressed refrigerant gas is discharged. 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 formed by condensation in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator may achieve a cooling effect by exchanging heat with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner may adjust the temperature of the indoor space throughout the cycle.

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

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

The present application provides an indoor unit of an air conditioner, which aims to solve one or more of the above problems, and the following figures describe the indoor unit of an air conditioner with reference to fig. 1 to 10.

Referring to fig. 1 to 3, the indoor unit of the air conditioner may be a wall-mounted or other structure-mounted unit.

The directions described herein are based on the direction in which the user faces the air conditioning indoor unit, wherein the side of the air conditioning indoor unit facing the user when in use is defined as the front side of the air conditioning indoor unit, and the side opposite to the front side is defined as the rear side, and the user is defined as the left and right of the air conditioning indoor unit when the user faces the air conditioning indoor unit. The top end and the bottom end of the air conditioner indoor unit are two ends which are arranged in the height direction when the air conditioner indoor unit is hung on a wall body or other structures. The top and bottom of the shell are two ends arranged in the height direction, the front side and the rear side of the shell are two sides arranged in the width direction, and the left end and the right end of the shell are two ends arranged in the length direction.

Referring to fig. 1 to 3, a casing 10 forms an overall appearance of an air conditioner indoor unit, and an accommodating space is defined inside the casing 10.

In some embodiments of the present application, the indoor unit of the air conditioner may be a hanging unit hung on a wall or other structure.

Referring to fig. 1 to 3, the indoor unit of an air conditioner of the present application includes a housing 10, a heat exchanger 20, a heat exchanging air duct 30, and a fan 40.

The top of casing 10 is provided with indoor air intake 12, and casing 10 front side bottom is provided with indoor air outlet 12, and heat exchanger 20 sets up in casing 10, and heat transfer wind channel 30 comprises through-flow wind channel 31 and centrifugal wind channel 32, and it sets up in casing 10.

The heat exchanger 20 is arranged on the windward side of the through-flow air duct 31 and the centrifugal air duct 32, and air flows from the indoor air inlet 11 on the top side of the indoor air conditioner, through the heat exchanger 20, and into the through-flow air duct 31 and the centrifugal air duct 32.

The fan 40 is arranged in the heat exchange air duct 30, the fan 40 is arranged below the indoor heat exchanger, and indoor air flow enters the shell 10 through the indoor air inlet 11 and is output from the indoor air outlet 12 after being subjected to heat exchange by the indoor heat exchanger;

Any blade of the fan 40 penetrates through the first partition plate 43, and the fan 40 is divided into a centrifugal unit 42 and a through-flow unit 41 by the first partition plate 43;

In some embodiments of the present application, the through-flow air duct 31 is disposed in the housing 10, the through-flow air duct 31 is provided with the through-flow unit 41, a space of the through-flow unit 41 close to the indoor air inlet 11 is a through-flow air duct air inlet space 311, a space of the through-flow unit 41 close to the indoor air outlet 12 is a through-flow air duct air outlet space 312, the centrifugal air duct 32 is disposed in the housing 10 and is located at one end of the through-flow air duct 31, a space of the centrifugal unit 42 close to the indoor air inlet 11 is a centrifugal air duct air inlet space 321, a space of the centrifugal unit 42 close to the indoor air outlet 12 is a centrifugal air duct air outlet space 322, and the centrifugal unit 42 is an extension of the through-flow unit 41 in the centrifugal air duct 32.

The gap between the through-flow unit 41 and the through-flow air duct 31 near the front inner wall of the air conditioning indoor unit and the gap between the through-flow unit 41 and the through-flow air duct 31 near the rear inner wall of the air conditioning indoor unit are smaller than the gap between the through-flow air duct air inlet space 311 and the through-flow air duct air outlet space 312, so that in the through-flow air duct 31, the blades of the through-flow unit 41 rotating to the through-flow air duct air inlet space 311 only play a role of an air inlet, the blades of the through-flow unit 41 rotating to the through-flow air duct air outlet space 312 can accelerate the air flow, work can be done on the air flow, and experiments prove that the air flow pressure of the through-flow unit 41 is lower than the atmospheric pressure, and a negative pressure area of an eccentric scroll is arranged in the through-flow unit 41.

The through-flow unit 41 includes a plurality of impellers 411, the impellers 411 are disposed in sequence along the axial direction of the fan 40, each impeller 40 includes a plurality of blades 4111 disposed along the circumferential direction, a fourth partition 46 is disposed between two adjacent impellers 411, and a through hole is formed in the fourth partition 46.

The centrifugal air duct 32 is arranged in the shell 10 and is positioned at one end of the through-flow air duct 31, the centrifugal fan 42 is arranged in the centrifugal air duct 32, the air duct shell 49 is arranged at the periphery of the centrifugal fan 42, the spiral casing formed by the air duct shell 49 and the indoor air outlet 12 is in a logarithmic spiral shape, the centrifugal units 42 and the spiral casing structure at the periphery of the centrifugal units enable the blades of each centrifugal unit 42 to accelerate the air flow, so that the centrifugal air duct 32 has strong working capacity, and experiments prove that the air flow blown out of the centrifugal air duct 42 is larger than the external atmospheric pressure.

In some embodiments of the present application, the centrifugal air duct 42 is provided with an air duct housing 49 at its periphery, and the air duct housing 49 is provided with an opening on the side close to the housing 10, from which air is axially introduced into the centrifugal air duct 32.

The diameter of the inner wall of the air duct housing 49 on the side close to the rotating shaft 51 is larger than the circular diameter of the centrifugal unit 42, which is shown by the movement track of the blades on the side far away from the rotating shaft 51, and is equal to or smaller than the diameter of the first partition plate 43.

The air duct housing 49 is provided with a protrusion 491 above the first partition plate 43, the protrusion 491 is arranged across the first partition plate 43, the end surface of the protrusion 491, which is close to the rotating shaft 51, is larger than the circular diameter of the centrifugal unit 42 and the through-flow unit 41, which is presented by the movement track of the blades at one end far away from the rotating shaft 51, is smaller than or equal to the diameter of the first partition plate 43, and the diameter of the inner wall of the protrusion 491, which is far away from the rotating shaft 51, is larger than the diameter of the first partition plate 43. The air duct housing 49 can reduce the channeling of the centrifugal air duct 32 to the through-flow air duct 31, but a second movement gap 48 must be formed between the centrifugal unit 32 and the through-flow unit 31 and the first partition 43, so that the protrusion 491 can block the airflow passing through the second movement gap 48 in order to reduce the airflow of the centrifugal air duct 32 entering the through-flow air duct 31 through the second movement gap 48.

According to the application, the through-flow air duct 31 and the centrifugal air duct 32 are used for mixing and air-out, the air flow pressure of the air-out of the through-flow air duct 31 is smaller than the atmospheric pressure, and the air flow pressure of the air-out of the centrifugal air duct 32 is larger than the atmospheric pressure, so that cross flow easily occurs at the joint position of the through-flow air duct 31 and the centrifugal air duct 32, and the air flow blown out of the centrifugal air duct 32 does not completely blow out of the centrifugal air duct 32 along the indoor air outlet 12 due to the action of pressure difference and enters the through-flow air duct 31, so that an isolation structure is arranged between the through-flow air duct 31 and the centrifugal air duct 32.

In some embodiments of the present application, a first partition plate 43 is disposed between the centrifugal unit 42 and the through-flow unit 41, two sides of the first partition plate 43 perpendicular to the rotation axis 51 are respectively connected to the first partition plate 43 and the second partition plate 44, the diameter of the first partition plate 43 is greater than or equal to the diameter of the movement track of the end portion of the blade away from the rotation axis 51, and the arrangement of the first partition plate 43 can avoid axial cross-flow of the through-flow unit 41 and the centrifugal unit 42 in the blade.

A second partition 44 is provided between the centrifugal unit 42 and the through-flow unit 41, and the second partition 44 is located below the through-flow duct 31 and the centrifugal duct 32.

Referring to fig. 8, in some embodiments of the present application, the second partition 44 includes a wind shielding portion 441, a stepped portion 442, and a flange 443.

The lower end of the wind shielding portion 441 is connected to the housing 10 such that air is not leaked between the through-flow air duct 31 and the centrifugal air duct 32 at the inner walls of the wind shielding portion 441 and the heat exchange air duct 30.

When the fan 40 rotates, a first movement gap 47 must exist between the upper end of the wind shielding portion 441 and the first partition plate 43, so that a movement gap exists between the fan 40 and the second partition plate 44 to ensure that the fan 40 rotates, and when the indoor unit of the air conditioner operates, the air flow blown out by the centrifugal air duct 32 still can enter the through-flow air duct 41 through the first movement gap 47 between the first partition plate 43 and the wind shielding portion 441.

The stepped portion 442 is connected to an end of the wind shielding portion 441 adjacent to the first separator 43, and the stepped portion 442 extends from the end of the wind shielding portion 441 adjacent to the first separator 43 toward the side of the through-flow unit 41 in the longitudinal direction of the fan 40.

The step portion 442 includes a first step portion 4421 and a second step portion 4422, the first step portion 4421 is a portion of the step portion 442 extending along the length direction of the fan 40, and the second step portion 4422 is a portion of the first step portion 4421 extending toward the axis of the fan 40 at an end of the first step portion 4421 away from the first partition 43.

When the fan 40 is operated, high-pressure air in the centrifugal air duct 32 enters the through-flow air duct 31 from the first movement gap 47 between the wind shielding part 441 and the first partition plate 43, the stepped part 442 can limit air flow from the centrifugal air duct 32 into the through-flow air duct 31 through the first movement gap 47, air flow entering the through-flow air duct 31 along the first stepped part 4421 when the air flow passes through the first movement gap 47 can be blocked by the second stepped part 4422, cross flow of the air flow can be well limited, and air flow of the centrifugal unit 42 is limited to enter the through-flow unit 41 through the first movement gap 47.

The flange 443 is connected to the second stepped portion 4422, and the flange 443 extends on both sides in the longitudinal direction of the fan 40 at one end of the stepped portion 442 near the axial center of the fan 40.

With the connection point of the step portion 442 and the flange 443 as a starting point, the flange 443 near one side of the first partition plate 43 can well limit the flow of the centrifugal air duct 32 to the through-flow air duct 31, when the air flow passes through the first movement gap 47, the air flow enters the through-flow air duct 31 along the first step portion 4421, the air flow entering the through-flow air duct 31 along the first movement gap 47 is blocked by the second step portion 4422, and when the blocked air flow still has a part entering the through-flow air duct 31 through the gap between the second step portion 4422 and the first partition plate 43, the flange 443 near one side of the first partition plate 43 can further limit the flow of the centrifugal air duct 32 to the through-flow air duct 31.

The wind shielding portion 441, the step portion 442, and the side flange 443 of the second separator 44 adjacent to the first separator 43 can limit the channeling of the airflow from the centrifugal air duct 32 to the through-flow air duct 31.

The air flow pressure difference exists between the middle part of the through-flow unit 41 of the fan 40 and the air flow pressure at the two ends, the air pressure of the air outlet at the middle part of the through-flow unit 41 is larger than the air pressure of the air outlet at the two ends of the through-flow unit 41, and the air outlet at the middle part of the through-flow unit 41 easily flows back to the two ends of the through-flow unit 41 under negative pressure.

The air outlet at the middle part of the through-flow unit 41 enters into the two ends of the through-flow unit 41 due to negative pressure backflow, takes the connection point of the step part 442 and the flanging 443 as a starting point, and is far away from the flanging 443 of the first partition plate 43, so that the negative pressure backflow of the middle part of the through-flow unit 41 to the side of the through-flow unit 41 close to the first partition plate 43 can be limited, and the through-flow unit 41 can smoothly outlet air.

Through setting up first baffle 43 and second baffle 44 in the air conditioning indoor set, restricted the cross flow of air current from through-flow wind channel 31 to centrifugal wind channel 32, the high-pressure wind that centrifugal wind channel 32 blown out and the low-pressure wind that through-flow wind channel 31 blown out are joined in indoor air outlet 12's outside to increase the air-out distance of air conditioning indoor set, promote indoor ventilation efficiency.

A third partition board 45 is arranged above the through-flow unit 41 and the centrifugal unit 42, the third partition board 45 is arranged between the through-flow air channel air inlet space 311 and the centrifugal air channel air inlet space 321, the third partition board 45 is attached to the air channel shell 49, and the upper end of the third partition board 45 is arranged close to the heat exchanger 20.

Referring to fig. 4, a third partition 45 is disposed between the through-flow air duct air inlet space 311 and the centrifugal air duct air inlet space 321 and above the through-flow air duct 31 and the centrifugal air duct 32, so as to prevent air flow from flowing from the upper side of the first partition 43 axially along the centrifugal unit 42 to the through-flow unit 41. When the through-flow unit 41 and the centrifugal unit 42 are operated, it is possible to prevent the air flow of the through-flow duct air intake space 311 from flowing into the centrifugal duct air intake space 321 due to the pressure difference.

In the heat exchange air duct 30, a centrifugal air duct air inlet space 311 is formed by the side, close to the centrifugal unit 42, of the third partition plate 45 and the side, close to the indoor air inlet 11, of the air duct shell 49, and air flow enters the centrifugal fan air inlet space 321 from the indoor air inlet 11 and then axially enters the centrifugal air duct 32.

In an embodiment of the present application, the indoor unit of the air conditioner includes a mounting frame connected to the housing 10, and a fan mounting cavity for accommodating the fan 40 is provided inside the mounting frame.

The heat exchanger 20 is disposed in the heat exchange air duct 30 and is disposed in the heat exchange air duct 30, one end of the heat exchanger 20 is connected with the mounting frame, and air flowing into the heat exchange air duct 30 flows to the fan 40 after heat exchange of the heat exchanger 20.

When the indoor unit of the air conditioner works, air flow entering the heat exchange air duct 30 from the indoor air inlet 11 through the heat exchanger 20 is divided into a through-flow air duct air inlet space 311 and a centrifugal air duct air inlet space 321 by the third partition board 45, and the third partition board 45 can play a role in shunting, so that the air flow is ensured to enter the air inlet channel of the centrifugal air duct 32 from the indoor air inlet 11 to be kept smooth.

The second partition 44 is disposed between the through-flow air duct 31 and the centrifugal air duct 32 and below the through-flow air duct 31 and the centrifugal air duct 32, so that when the through-flow unit 41 and the centrifugal unit 42 are operated, the air flow in the through-flow air duct air outlet space 312 due to the pressure difference can be prevented from flowing into the centrifugal air duct air outlet space 322.

The third partition 45 is located above the through-flow duct 31 and the centrifugal duct 32, and can prevent the air flow of the through-flow duct air inlet space 311 from flowing into the centrifugal duct air inlet space 321 due to the pressure difference when the through-flow unit 41 and the centrifugal unit 42 are operated.

In some embodiments of the present application, the first separator 43, the second separator 44 and the third separator 45 cooperate to effectively prevent the high-pressure air of the centrifugal air duct 32 from flowing to the through-flow air duct 31 in the heat exchange air duct 30, effectively reduce the flow-channeling probability of the air flow, increase the air output of the centrifugal air duct 32, improve the air flow pressure of the air flow blown out by the centrifugal air duct 32, and at higher air flow speed, the air flow blown out by the centrifugal air duct 32 merges with the air flow blown out by the through-flow unit 41 outside the indoor unit of the air conditioner, so that the air flow can be blown out for a longer distance, and further improve the cooling and heating efficiency of the air conditioner.

Referring to fig. 10, in some embodiments of the present application, the indoor unit of an air conditioner further includes a driving motor (not shown) and a bearing 52, the driving motor (not shown) is disposed in the housing 10 and located at one side end of the through-flow unit 41 or the centrifugal unit 42, the bearing 52 is disposed in the housing 10 and located at the other end opposite to the driving motor (not shown), the driving motor (not shown) and the bearing 52 are disposed at both ends of the rotation shaft 51, the through-flow unit 41 and the centrifugal unit 42 are disposed on the rotation shaft 51, and the through-flow unit 41 and the centrifugal unit 42 rotate along the rotation shaft 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

1. An air conditioning indoor unit, comprising:

The step and the flange limit the air flow from the centrifugal unit to the through-flow unit through the first gap.

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

The first baffle is connected with any blade of the fan and used for limiting air flow from the centrifugal unit to enter the through-flow unit.

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

The second partition plate is arranged in a ventilation space on one side of the fan, which is close to the indoor air outlet, the ventilation space is divided into two parts along the axial direction of the fan by the second partition plate, and the air outlet of the centrifugal unit and the air outlet of the through-flow unit are converged on one side of the indoor air outlet.

4. An indoor unit for an air conditioner according to claim 1, wherein,

The length of one side of the flange, which is close to the first baffle plate, in the axial direction of the fan is smaller than or equal to the length of one side of the flange, which is far away from the first baffle plate, in the axial direction of the fan.

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

The distance between one side of the flange, which is close to the first baffle plate, and the first baffle plate is smaller than or equal to the distance between the wind shielding part and the first baffle plate.

6. An indoor unit for an air conditioner according to claim 1, wherein,

The length of the through-flow unit along the axial direction is smaller than that of the centrifugal unit along the axial direction.

7. The air conditioning indoor unit of claim 1, further comprising:

the rotating shaft is arranged at the axle center of the centrifugal unit;

8. An air conditioning indoor unit, comprising:

The air duct shell is arranged at the periphery of the centrifugal unit, a centrifugal air duct opening is formed in the air duct shell in the axial direction of the fan, indoor air enters the air duct through the indoor heat exchanger from the centrifugal air duct opening, and air is discharged from the indoor air outlet through the air duct shell;

9. The indoor unit of claim 8, wherein the indoor unit of the air conditioner,

The air duct shell comprises a protrusion, the protrusion is located on the periphery of the first partition board, one part of the protrusion is located above the centrifugal unit, and the other part of the protrusion is located above the through-flow unit.

10. The indoor unit of claim 9, wherein the indoor unit of the air conditioner,

A gap is formed between the first baffle plate and the bulge, and a part of the first baffle plate is positioned in a groove in the bulge so as to limit air flow from the centrifugal unit to enter the through-flow unit.