CN112303714A

CN112303714A - Air conditioner indoor unit and air conditioner

Info

Publication number: CN112303714A
Application number: CN201910705103.0A
Authority: CN
Inventors: 杜顺开; 谭周衡; 曾威; 周向阳
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2021-02-02

Abstract

The invention discloses an air conditioner indoor unit and an air conditioner, wherein the air conditioner indoor unit comprises an air outlet cavity and a vortex ring generating part, the air outlet cavity is provided with an air inlet and an air outlet opposite to the air inlet, the air outlet cavity is at least partially arranged from the air inlet to the air outlet in a gradually-reduced mode to be provided with an annular gradually-reduced section, the air passing area of the air outlet is smaller than the air passing area of the air inlet, the included angle between the inner wall of the annular gradually-reduced section and the central line of the annular gradually-reduced section is 15-45 degrees, the vortex ring generating part is arranged on one side, far away from the air outlet, of the air inlet, and the vortex ring generating part can periodically drive air flow. In the invention, the vortex ring generating part generates disturbance in the air inlet direction to the air in the air outlet cavity, the airflow is periodically driven to blow out from the air outlet cavity, and the airflow flowing through the air outlet cavity is influenced by the annular tapered section to form distribution with slow peripheral flow velocity and large middle flow velocity, so that the blown air forms more obvious vortex ring airflow to realize farther air supply distance.

Description

Air conditioner indoor unit and air conditioner

Technical Field

The invention relates to the technical field of air conditioning, in particular to an air conditioner indoor unit and an air conditioner.

Background

The conventional air conditioner blows out air flow after heat exchange through a conventional air opening of the air conditioner, the air outlet mode of the conventional air conditioner is conventional air outlet, the air flow coming out from the conventional air opening is fixed and unchangeable, the radiation range of the conventional air conditioner is short and narrow, large-range and remote air supply cannot be achieved, and the use experience of a user is reduced.

The vortex ring generating device is arranged on the air conditioner to realize remote air supply, but the air outlet in the conventional shape has poor air flow effect of the generated vortex ring and short air supply distance.

The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.

Disclosure of Invention

The invention mainly aims to provide an air conditioner indoor unit and an air conditioner, and aims to provide an air conditioner which is better in vortex ring effect and longer in air supply distance.

In order to achieve the above object, the present invention provides an indoor unit of an air conditioner, comprising:

the air outlet cavity is provided with an air inlet and an air supply outlet opposite to the air inlet, the air outlet cavity is at least partially arranged in a gradually-reduced manner from the air inlet to the air supply outlet so as to form an annular gradually-reduced section, the air passing area of the air supply outlet is smaller than that of the air inlet, and the included angle between the inner wall of the annular gradually-reduced section and the central line of the annular gradually-reduced section is 15-45 degrees; and the number of the first and second groups,

the vortex ring generating part is arranged on one side, far away from the air supply opening, of the air inlet, and can periodically drive airflow to blow out through the air outlet cavity.

In one embodiment, the ratio of the air passing area of the air supply outlet to the air passing area of the air inlet is 0.1 to 0.7.

In one embodiment, the extension length of the annular tapered section is 50-300 mm.

In an embodiment, the air outlet cavity is arranged in a tapered manner from the air inlet to the air outlet.

In an embodiment, the outlet cavity has a straight section disposed near the inlet, one end of the annular tapered section is disposed adjacent to the straight section, the other end of the annular tapered section forms the outlet, and the cross section of the outlet cavity in the straight section remains unchanged.

In one embodiment, the extension of the straight section in the air intake direction is not less than 1/3 of the extension of the annular tapered section.

In an embodiment, the vortex ring generation part includes a driving device and a switch door, the switch door is arranged at an air inlet of the air outlet cavity to block air flow from flowing into the air outlet cavity, and the driving device is connected with the switch door to drive the switch door to be opened or closed.

In an embodiment, the indoor unit of the air conditioner further includes a flexible cavity, the flexible cavity is disposed on one side of the air inlet of the air outlet cavity and is communicated with the air outlet cavity through the switch door, and at least part of the flexible cavity is made of an elastic material, so that the flexible cavity can store pressure.

In an embodiment, the vortex ring generating portion includes a driving device and a compression element, the compression element is disposed in the air outlet cavity, and the driving device is connected to the compression element to periodically drive the compression element to extrude the air at a side of the air outlet cavity close to the air supply opening, and to blow the air out through the air supply opening.

In one embodiment, the indoor unit of the air conditioner further comprises:

the air outlet cavity is communicated with the air outlet, and the air inlet of the air outlet cavity is communicated with the heat exchange air channel;

the fan assembly is arranged in the shell and can drive airflow to flow from the air inlet to the vortex ring generating part; and the number of the first and second groups,

the heat exchanger is arranged on the heat exchange air duct.

In one embodiment, a flow collecting piece is installed at the air outlet of the casing, the flow collecting piece is arranged in a hollow manner to form the air outlet cavity, the flow collecting piece is installed in the casing, and the air supply outlet is arranged corresponding to the air outlet; alternatively, the first and second electrodes may be,

the air outlet of the casing is provided with a flow collecting piece which is arranged in a hollow mode to form the air outlet cavity, and the flow collecting piece is arranged on the casing and at least partially extends out of the casing.

The invention also provides an air conditioner, which comprises an air conditioner indoor unit and an air conditioner outdoor unit which are connected through a refrigerant pipe, wherein the air conditioner indoor unit comprises:

the air outlet cavity is provided with an air inlet and an air supply outlet opposite to the air inlet, and the air outlet cavity is at least partially arranged in a gradually reducing manner from the air inlet to the air supply outlet, so that the air passing area of the air supply outlet is smaller than that of the air inlet; and the number of the first and second groups,

the vortex ring generating part is arranged on one side of the air inlet far away from the air supply outlet and can periodically drive airflow to blow out through the air outlet cavity.

According to the air conditioner indoor unit provided by the invention, the vortex ring generating part generates disturbance in the air inlet direction to the air in the air outlet cavity, the air flow is periodically driven to blow out through the air outlet cavity, the periphery of the air flow flowing through the air outlet cavity is subjected to resistance due to the influence of the inner wall of the annular gradually-reducing section, and flow field distribution with low peripheral flow velocity and high middle flow velocity is formed, so that the air flowing through the air outlet cavity and blown out from the air supply outlet forms more obvious vortex ring air flow, and further air supply distance is realized. And the included angle between the inner wall of the annular gradually-reducing section and the central line of the annular gradually-reducing section is 15-45 degrees, so that the vortex ring effect and the air supply distance can be considered, and the better air supply effect is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 2 is a partial sectional view of the indoor unit of the air conditioner of fig. 1;

fig. 3 shows a schematic perspective view of the indoor unit of the air conditioner of fig. 1;

figure 4 shows a side view of the indoor unit of the air conditioner of figure 1;

figure 5 shows a top view of the indoor unit of the air conditioner of figure 1;

figure 6 shows a front view of the indoor unit of the air conditioner of figure 1;

figure 7 shows a cross-sectional view a-a of the indoor unit of the air conditioner of figure 6; (ii) a

Fig. 8 is a schematic structural view of an embodiment of the air outlet cavity in fig. 2;

fig. 9 shows a schematic structural view of another embodiment of the air outlet cavity in fig. 2;

FIG. 10 is a schematic structural view of the flexible chamber in the air outlet chamber of FIG. 2 before pressure accumulation;

fig. 11 shows a schematic structural diagram of the flexible cavity in fig. 10 after pressure accumulation.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)	Reference numerals	Name (R)
						100	Indoor machine of air conditioner	14	Fan assembly	104	Heat exchange air duct
10	Air outlet cavity	15	Heat exchanger	110	Straight section
						11	Air inlet	101	Casing (CN)	120	Annular tapered section
12	Air supply outlet	102	Air inlet	20	Flexible cavity
						13	Vortex ring generating part	103	Air outlet	200	Flow collecting piece

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.

The invention provides an air conditioner indoor unit, which can be a floor type air conditioner indoor unit, a mobile air conditioner, a wall-mounted air conditioner indoor unit, a window machine and the like.

Referring to fig. 1 to 7, in the present embodiment, an air conditioner indoor unit 100 includes an air outlet cavity 10 and a vortex ring generating portion 13, the air outlet cavity 10 has an air inlet 11 and an air outlet 12 opposite to the air inlet 11, and the air outlet cavity 10 is at least partially disposed in a tapered manner from the air inlet 11 to the air outlet 12 to have an annular tapered section 120, so that an air passing area of the air outlet 12 is smaller than an air passing area of the air inlet 11. The vortex ring generating part 13 is arranged on one side of the air inlet 11 far away from the air supply outlet 12, and the vortex ring generating part 13 can periodically drive airflow to be blown out through the air outlet cavity 10.

The cross section of the annular tapered section 120 may be circular, elliptical, or the like, as long as a vortex ring can be formed. In this embodiment, the cross section of the annular tapered section 120 is circular, the air inlet 11 and the air outlet 12 are arranged in a circular manner, and the center line is a line connecting the centers of the air inlet 11 and the air outlet 12. The vortex ring generating part 13 generates disturbance in the air inlet direction to the air in the air outlet cavity 10, periodically drives the air flow to be blown out from the air outlet cavity 10, and the periphery of the air flow flowing through the air outlet cavity 10 is blocked due to the influence of the inner wall of the tapered annular tapered section 120, so that a flow field distribution with slow peripheral flow rate and large middle flow rate is formed, so that the air blown out from the air supply opening 12 forms more obvious vortex ring air flow, and further air supply distance is realized. And the vortex ring exchanges heat with ambient air in the transmission process, the temperature difference between the temperature of the vortex ring and the ambient air is not large, so that the vortex ring cannot generate obvious supercooling or overheating feeling when being blown on a person, and the comfort is improved.

In this embodiment, as shown in fig. 2, an included angle α between an inner wall of the annular tapered section 120 and a center line of the annular tapered section is 15 ° to 45 °, and the center line of the annular tapered section 120 is a connecting line between the centers of the air inlet 11 and the air outlet 12. Those skilled in the art can understand that when the inclination angle of the air outlet cavity 10 at the tapering position is too small, the periphery of the air flow cannot be effectively decelerated due to obstruction, and the effect of forming the vortex ring is not good, and when the inclination angle of the air outlet cavity 10 at the tapering position is too large, the air flow is influenced due to the obstruction of the air flow, so that the power of the vortex ring is insufficient, and the ideal air supply distance cannot be achieved. Therefore, when the included angle α between the inner wall of the annular tapered section 120 and the central line of the annular tapered section is 15 ° to 45 °, the vortex ring effect and the air supply distance can be considered, and a better air supply effect is achieved.

On the basis of the above embodiment, the air supply opening 12 has a smaller air passing area than the air inlet 11, so that the airflow forms a vortex ring after flowing through the air outlet cavity 10, and preferably, the ratio of the air passing area of the air supply opening 12 to the air passing area of the air inlet 11 is 0.1-0.7. Those skilled in the art can understand that, when the difference between the air passing area of the air supply opening 12 and the air passing area of the air inlet 11 is larger, the effect of forming the vortex ring is more obvious, but when the difference between the air passing area of the air supply opening 12 and the air passing area of the air inlet 11 is too large, the wind resistance of the airflow in the air outlet cavity 10 is too large, the overall power of the formed vortex ring is insufficient, the ideal air supply distance cannot be achieved, and when the air passing area of the air supply opening 12 is close to the air passing area of the air inlet 11, the obvious vortex ring cannot be formed. In the present embodiment, the ratio of the air passing area of the air outlet 12 to the air passing area of the air inlet 11 is 0.1 to 0.7, which can achieve both a good vortex ring effect and a good air blowing distance.

In addition to the above embodiments, referring to fig. 2 and 9, the extension length L1 of the annular tapered section 120 is 50mm to 300 mm. It will be appreciated by those skilled in the art that the longer the extended length L1 of the annular tapered section 120, the more readily a distinct vortex ring is formed. According to the size of the indoor unit of a general air conditioner, the extension length L1 of the annular tapered section 120 is not less than 50mm, so that a better vortex ring air supply effect can be achieved. Furthermore, the extension length of the annular tapered section is less than 300mm, preferably 180mm, so as to achieve a better vortex ring air supply effect and meet the requirement of the appearance size of the indoor unit of the air conditioner.

There are various ways to realize the taper of the air outlet cavity 10, for example, as shown in fig. 8, the air outlet 12 may be set to be tapered from the air inlet 11 of the air outlet cavity 10, or may be set to be tapered from the air inlet 11 of the air outlet cavity 10 to the middle of the air outlet 12, and preferably, the portion of the air outlet cavity 10 adjacent to the air outlet 12 is tapered. As long as the air blowing opening 12 can have an air passing area smaller than that of the air inlet 11.

Like this, the air current that flows through air-out cavity 10 is in the cavity of convergent, and the air current of periphery receives the influence of convergent cavity inner wall, and the velocity of flow is slower, and the air current velocity of flow in the middle of is relatively faster, therefore spills over to the periphery more easily at supply-air outlet 12, forms more obvious vortex ring air current to realize farther air supply distance.

On the basis of the above embodiment, referring to fig. 9, the air outlet cavity 10 has a straight section 110 disposed near the air inlet 11, one end of an annular tapered section 120 is disposed adjacent to the straight section 110, and the other end of the annular tapered section 120 forms an air outlet 12.

In general, the flow field of the air entering the air outlet cavity 10 from the air inlet 11 may be unevenly distributed, so that the air passing through the annular tapered section 120 cannot form an obvious vortex ring. In this implementation, when the air current flows through straight section 110, obtain certain rectification effect to flow velocity distribution is more even before getting into annular convergent section 120, can form the better vortex ring of effect behind annular convergent section 120.

In the present embodiment, in consideration of the space size and the rectification effect inside the air conditioning indoor unit, the extension length L2 of the straight section 110 in the air intake direction is not less than 1/3 of the extension length of the annular tapered section, so as to stabilize the airflow and form a better vortex ring.

There are various ways for the vortex ring generating part 13 to periodically drive the airflow to be blown out through the air outlet cavity 10, in this embodiment, the vortex ring generating part 13 is installed in the air outlet cavity 10, specifically, the vortex ring generating part 13 is connected to the air inlet 11. The vortex ring generating part 13 can be detachably mounted, and can also be integrally formed with the air outlet cavity 10. Specifically, the vortex ring generating portion 13 may be a door opening and closing structure, such as a louver structure, a door panel structure, a fan structure, and the like, and the door opening and closing structure is periodically opened or closed, so that air with a certain pressure accumulated on one side of the door opening and closing structure is rapidly released from the air inlet 11, and forms a vortex ring to blow out after flowing through the air outlet cavity 10.

Specifically, referring to fig. 2, the vortex ring generating portion 13 includes a driving device and a switch door, the switch door is disposed at the air inlet 11 of the air outlet cavity 10 to block the air flow from flowing into the air outlet cavity 10, and the driving device is connected to the switch door to drive the switch door to open or close. The air inlet 11 of the air outlet cavity 10 is opened or closed repeatedly by controlling and driving the switch door to do periodic reciprocating motion, so as to drive the air flow periodically. In this embodiment, it should be noted that when the switch door is closed, that is, when the air inlet 11 is closed, the switch door may be completely closed, or may be partially closed, for example, 2/3, 4/5, 5/6, 9/10 and the like that close the air inlet 11. The air inlet 11 may be communicated with a heat exchange air duct 104 of the air conditioner, and the heat exchange fan may continuously blow the air flow to the air outlet cavity 10. The air inlet 11 may not be connected to the heat exchange air duct 104, and a vortex ring fan may be provided to drive sufficient indoor airflow to flow toward the air inlet 11. When the vortex ring generating part 13 is operated, a certain volume of air is accumulated outside the air inlet 11 because the air inlet 11 is continuously supplied with air. When the vortex ring generating part 13 opens the air inlet 11, a driving force is generated to drive the air flow to the air outlet 12 due to the pressure difference, and the air outlet 12 can blow the vortex ring air flow because the air passing area of the air outlet 12 is smaller than that of the air inlet 11.

The opening and closing door can be of a shutter structure, a door plate structure, a fan structure and the like. The driving device can comprise a control panel and a driving piece, the driving piece can be a hydraulic device, an air pressure device or a motor driving device, and the driving device can drive the opening and closing door to rotate, stretch and the like so as to drive the opening and closing door to be opened and closed periodically. The control panel controls the driving member to drive the opening and closing door to repeatedly open or close the air inlet 11. The structure of opening and closing the door is added through the driving device, the structure is simple and stable, and the control is convenient, so that the smooth generation of vortex ring airflow is more facilitated.

In an embodiment, the opening and closing door includes a plurality of blades, the vortex ring generating portion 13 further includes a transmission member, the transmission member is connected to the plurality of blades in a transmission manner, and the driving device is connected to the transmission member to drive the plurality of blades to open or close. In this embodiment, the blade structure makes the switching mode of switch door simple more reliable, and easily realizes. In one embodiment, the driving device is an electromagnet, the transmission part comprises a gear connected with a blade rotating shaft, a rack connected with the electromagnet, and a transmission rod in transmission connection with the blade rotating shafts, and the rack is driven by the pulse of the electromagnet to drive the gear to rotate so as to drive the blades to open or close. Pulse signals are given through the electromagnet to drive the rack to do reciprocating motion, and then the gear is driven to rotate so as to drive the blades to be rapidly opened and closed within a certain angle. In another embodiment, the driving device is a motor, the transmission member includes a gear connected to the motor shaft, a pinion engaged with the gear and fixedly connected to the blade rotating shaft, and a transmission rod drivingly connected to the blade rotating shafts, and the motor drives the gear to rotate the pinion to drive the blade to rotate around the rotating shaft, so as to rotate the blades.

In another embodiment, the vortex ring generating portion 13 periodically drives the airflow to be blown out through the outlet cavity 10. It is understood that the vortex ring generating part 13 may be a compression structure in a cavity, an air compressor, or the like, and only needs to periodically drive the air flow from the air inlet 11 to the air outlet 12. The vortex ring generator 13 periodically disturbs the airflow in the air outlet cavity 10, so that the airflow can be pushed to be blown out from the air outlet 12 and has a certain flow velocity. The pressure difference between the central area and the peripheral area of the air supply opening 12 makes the air flow at the side of the air supply opening 12 supplement to the edge of the air supply opening 12, so that the vortex ring air flow can be blown out at the air supply opening 12, and the diameter of the vortex ring air flow is gradually increased, thereby realizing long-distance and wide-area air supply.

Specifically, the vortex ring generator 13 includes a driving device and a compressor (not shown), the compressor (not shown) is attached to the air outlet chamber 10, the driving device is connected to the compressor (not shown), and the compressor (not shown) is periodically driven to extrude the gas in the air outlet chamber 10 on the side close to the air outlet 12 and blow the gas out through the air outlet 12.

In this embodiment, the compression member may be a piston structure, a membrane structure, or the like. When the compressing element (not shown) is a piston structure, the piston is sealed with the inner wall surface of the air outlet cavity 10 and can move relatively. When the driving device drives the piston to move in the air outlet cavity 10, the air in the air outlet cavity 10 near the air supply opening 12 can be compressed, and the air is further pushed to form a vortex ring airflow from the air supply opening 12 to be blown out. In an embodiment, the piston structure includes a pushing plate and a pushing rod connected to the pushing plate, and the pushing plate is movably connected to the inner wall surface of the air outlet cavity 10. The driving device drives the pushing rod to drive the pushing plate to move in the air outlet cavity 10. When the compression member (not shown) is a film structure, the film structure is a flexible material or an elastic material. And the film structure is fixedly connected with the inner wall surface of the air outlet cavity 10, air on one side of the air outlet cavity 10 close to the air supply outlet 12 can be periodically extruded through the push-pull film structure, and therefore air flow is driven to form vortex ring air flow from the air supply outlet 12 to be blown out. The driving device can comprise a driving piece and a transmission piece, and the driving piece can be a motor driving device, a hydraulic driving device, a pneumatic driving device, an electromagnet driving device and the like. The driving member may be a screw drive, a worm and gear drive, a rack and pinion drive, a connecting rod drive, etc., and it is only necessary to enable the driving member to drive the driving member to move so as to drive the compressing member (not shown) to extrude out the volume of the air cavity 10 near the side of the air supply outlet 12, and no specific limitation is made herein.

On the basis of the above embodiment, referring to fig. 10 and 11, the air conditioner indoor unit 100 further includes a flexible cavity 20, the flexible cavity 20 is disposed at one side of the air inlet 11 of the air outlet cavity 10 and is communicated with the air outlet cavity 10 through the switch door, and at least a part of the flexible cavity 20 is made of an elastic material, so that the flexible cavity 20 can store pressure.

In this embodiment, when the switch door for controlling air circulation is closed, the airflow continuously flows in the direction of the air outlet cavity 10, so that a pressure difference is formed between the front and the rear of the switch door, at this time, as shown in fig. 11, the flexible cavity 20 is pressed to expand outwards to store pressure, when the switch door for controlling air circulation is opened, the pressures of the flexible cavity 20 and the rear of the switch door are released instantaneously, as shown in fig. 10, the airflow is pushed out instantaneously, and at this time, the pressure difference is increased, so that the vortex ring effect generated by the vortex ring generating portion 13 is more obvious.

In an embodiment, referring to fig. 4 to 7, the indoor unit 100 of the air conditioner further includes a casing 101, the casing 101 has an air inlet 102, an air outlet 103, and a heat exchange air duct 104 communicating the air inlet 102 and the air outlet 103, the air outlet 12 of the air outlet cavity 10 communicates with the air outlet 103, and the air inlet 11 of the air outlet cavity 10 communicates with the heat exchange air duct 104.

The heat exchange air duct 104 means that the air flow entering from the air inlet 102 can exchange heat in the air duct and then be blown out from the air outlet 103. The cross-sectional shape of the heat exchange air duct 104 may be circular, oval, arc, etc., and the extension shape thereof may be a straight tube type, a bent type, etc. The heat exchange duct 104 may be directly enclosed by the casing 101, or may be enclosed by an inner casing inside the casing 101. Air flows in from the air inlet 102 of the casing 101, exchanges heat in the heat exchange air duct 104, and then is blown out from the air outlet 103 through the air outlet cavity 10, so that vortex air supply of cold air or hot air of the air conditioner is completed, the air supply distance is farther, and the user experience is good.

The air conditioner indoor unit 100 further includes a fan assembly 14, the fan assembly 14 is disposed in the casing 101, and the fan assembly 14 is capable of driving an air flow from the air inlet 102 to the vortex ring generating portion 13. The fan assembly 14 can drive sufficient airflow to flow from the air inlet 102 to the vortex ring generating portion 13, so that the airflow forms vortex ring airflow from the air supply outlet 12 of the air outlet cavity 10 after flowing through the vortex ring generating portion 13, and the output range of the vortex ring airflow is large and the output distance is long, so that a good air outlet effect is ensured, and the use experience of a user is improved. The fan assembly 14 may include a rotor and a motor that powers the rotor. The wind wheel can be a centrifugal wind wheel or an axial flow wind wheel. The number of the wind wheels may be one or two, when one wind wheel is provided, the wind wheel is placed at the wind inlet 102 to drive enough airflow from the wind inlet 102 to the vortex ring generation part 13, when two or more wind wheels are provided, one wind wheel is placed at the wind inlet 102 to drive enough airflow from the wind inlet 102, and the other wind wheel or a part of the wind wheels is placed at the wind inlet 11 to drive enough airflow to the vortex ring generation part 13.

The indoor unit 100 of the air conditioner further comprises a heat exchanger 15, and the heat exchanger 15 is disposed in the heat exchange air duct 104. The heat exchanger 15 exchanges heat for the air flow flowing into the heat exchange air duct 104 to form cold air or hot air to be blown out. The heat exchanger 154 may be a finned tube evaporator, a plate evaporator, or the like. The air current after the heat exchange of heat exchanger 15 forms the vortex ring through air-out cavity 10 and blows out for the air current after the heat exchange of the vortex ring that blows out, more comfortable and accord with the user demand of blowing.

There are various ways to form the outlet cavity 10, for example, the outlet cavity 10 may be formed integrally in the casing 101, or the collector 200 may be formed separately from the casing 101. In this embodiment, the air outlet 103 of the casing 101 is installed with a flow collecting piece 200, and the flow collecting piece 200 is disposed in a hollow manner to form the air outlet cavity 10. It will be appreciated that the current collector 200 is sealingly connected to the housing. In this embodiment, the hollow cavity of the collecting member 200 is at least partially tapered, so that the air flow area of the air supply opening 12 is smaller than the air flow area of the air inlet 11, and the air flow flowing from the air inlet 11 to the air supply opening 12 has a large on-way resistance and a large flow velocity in the middle part, so that the air flow can form a vortex ring air flow after being blown out from the air supply opening 12.

On the basis of the above embodiment, the collecting member 200 may be installed in the housing, and the air supply opening 12 is disposed corresponding to the air outlet 103. Thus, the current collector 200 does not protrude out of the housing, and the housing can protect the current collector 200, so that the current collector is not easily damaged, and meanwhile, the housing can be kept flat and uniform and is more attractive.

In another embodiment, as shown in fig. 1 and 7, the collecting member 200 is mounted on the housing and extends out of the housing, or only partially extends out of the housing, so that the size of the collecting member 200 can be designed to be larger, the air volume can be increased, and the formation of the vortex ring at the collecting member 200 can be more effective. Meanwhile, the space in the shell is not occupied by a large area.

The present invention further provides an air conditioner, which includes an air conditioner outdoor unit and an air conditioner indoor unit 100, the air conditioner outdoor unit and the air conditioner indoor unit 100 are connected through a refrigerant pipe, the specific structure of the air conditioner indoor unit 100 refers to the above embodiments, and the air conditioner adopts all the technical solutions of all the above embodiments, so that the air conditioner at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

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

2. The indoor unit of claim 1, wherein the ratio of the air passing area of the air supply outlet to the air passing area of the air inlet is 0.1-0.7.

3. The indoor unit of claim 1, wherein the extension length of the annular tapered section is 50-300 mm.

4. The indoor unit of claim 1, wherein the outlet cavity is tapered from the inlet to the outlet.

5. The indoor unit of claim 1, wherein the outlet cavity has a straight section disposed near the inlet, one end of the annular tapered section is disposed adjacent to the straight section, the other end of the annular tapered section forms the outlet, and the cross section of the outlet cavity at the straight section remains unchanged.

6. An indoor unit for an air conditioner according to claim 5, wherein the extension length of the straight section in the air intake direction is not less than 1/3 of the extension length of the annular tapered section.

7. The indoor unit of an air conditioner according to any one of claims 1 to 6, wherein the vortex ring generating portion includes a driving device and a switch door, the switch door is disposed at an air inlet of the air outlet cavity to block air flow from flowing into the air outlet cavity, and the driving device is connected to the switch door to drive the switch door to open or close.

8. The indoor unit of claim 7, further comprising a flexible cavity, wherein the flexible cavity is disposed at one side of the air inlet of the air outlet cavity and is communicated with the air outlet cavity through the switch door, and at least part of the flexible cavity is made of an elastic material, so that the flexible cavity can store pressure.

9. The indoor unit of any one of claims 1 to 6, wherein the vortex ring generator comprises a driving device and a compression element, the compression element is disposed in the outlet cavity, and the driving device is connected to the compression element to periodically drive the compression element to extrude the air at one side of the outlet cavity close to the air supply opening and blow the air out through the air supply opening.

10. An indoor unit according to any one of claims 1 to 7, further comprising:

the heat exchanger is arranged in the heat exchange air duct.

11. The indoor unit of an air conditioner as claimed in claim 10, wherein a flow collecting piece is installed at the air outlet of the casing, the flow collecting piece is hollow to form the air outlet cavity, the flow collecting piece is installed in the casing, and the air supply outlet is arranged corresponding to the air outlet; alternatively, the first and second electrodes may be,

12. An air conditioner, comprising an outdoor unit and the indoor unit as claimed in any one of claims 1 to 11, wherein the outdoor unit is connected to the indoor unit via a refrigerant pipe.