CN212252859U - Indoor unit of air conditioner - Google Patents

Abstract

The utility model provides an indoor unit of air conditioner, it includes: the shell is arranged on the wall surface in the space where the shell is arranged in a hanging manner, and is provided with an upper air inlet, a lower air inlet and an air outlet, wherein the upper air inlet and the lower air inlet are respectively arranged at the top and the bottom of the shell, and the air outlet is arranged at the front side of the shell; the fan is arranged in the shell and used for promoting airflow to flow from the upper air inlet and the lower air inlet to the air outlet; and the upper heat exchanger and the lower heat exchanger are arranged in the shell and are respectively positioned on airflow flow paths between the upper air inlet and the lower air inlet and the fan so as to respectively exchange heat with airflow flowing to the fan from the upper air inlet and the lower air inlet. Because two heat exchangers are far away from the air outlet, a user is not easy to touch, the problems that the existing wall-mounted air conditioner is only provided with one heat exchanger and the heat exchanger is close to the air outlet, so that safety regulations are not met and condensate water is easily blown out can be well solved, the use safety of the user is improved, and the use experience of the user is improved.

Description

Indoor unit of air conditioner

Technical Field

The utility model relates to an air conditioner especially relates to an air conditioning indoor unit.

Background

The existing vertical air conditioner indoor unit is usually directly placed on the ground and occupies a certain use space. At present, the urban housing price is high, the land is precious, people need to meet the storage requirement and simultaneously ensure that the indoor space is spacious and comfortable, and therefore, the trend of research and development of the air conditioning industry is to release the indoor space occupied by the indoor unit of the air conditioner.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at overcoming at least one defect among the prior art, provide an air conditioning indoor unit that hardly occupies indoor usage space, the air output is big, the air-out scope is wide.

The utility model discloses a further purpose is to improve the security that the machine used in the air conditioning, improve user's use and experience.

A further object of the present invention is to avoid the influence of the indoor unit of an air conditioner on the normal indoor activities of the user.

In order to achieve the above object, the utility model provides an indoor unit of air conditioner, it includes:

the shell is arranged on the wall surface in the space where the shell is arranged in a hanging manner, and is provided with an upper air inlet, a lower air inlet and an air outlet, wherein the upper air inlet and the lower air inlet are respectively arranged at the top and the bottom of the shell, and the air outlet is arranged at the front side of the shell;

the fan is arranged in the shell and used for promoting airflow to flow from the upper air inlet and the lower air inlet to the air outlet; and

and the upper heat exchanger and the lower heat exchanger are arranged in the shell and are respectively positioned on airflow flow paths between the upper air inlet and the lower air inlet and the fan so as to respectively exchange heat with airflow flowing to the fan from the upper air inlet and the lower air inlet.

Optionally, the length direction of the cabinet extends in a vertical direction; and is

The air outlet is a bar-shaped air outlet which is arranged on the front side surface of the machine shell and extends vertically.

Optionally, at least one side surface of the casing other than the front side surface thereof has a hanging structure for hanging the casing on the wall surface.

Optionally, the cross section of the casing is generally triangular; and is

The air outlet is formed in the front side face of the machine shell, and the cross section of the front side face of the machine shell is any side of the triangle.

Optionally, the triangle is a right triangle; and is

The hanging structure is arranged on two transverse side surfaces of the casing, the cross sections of the two transverse side surfaces are respectively two right-angle sides of the right-angled triangle, so that the casing is hung at a wall corner formed by two mutually vertical wall surfaces through the hanging structure on the transverse side surfaces.

Optionally, the cross section of the casing is overall fan-shaped; and is

The air outlet is arranged on the front side face of the machine shell, and the cross section of the front side face of the machine shell is a fan-shaped arc line.

Optionally, the central angle of the sector is 90 °; and is

The wall is characterized in that the hanging structures are arranged on two transverse side surfaces of the casing, the cross sections of the two transverse side surfaces are respectively provided with two fan-shaped radiuses, so that the casing is hung at a corner formed by two mutually vertical wall surfaces through the hanging structures on the two transverse side surfaces.

Optionally, the upper heat exchanger is horizontally arranged above the fan; and/or

The lower heat exchanger is horizontally arranged below the fan.

Optionally, the fan is a double suction centrifugal fan, and includes:

a volute having an upper airflow inlet opposite to the upper intake opening, a lower airflow inlet opposite to the lower intake opening, and an airflow outlet opposite to the air outlet; and

the double-suction impeller is arranged in the volute and is provided with a horizontally placed wheel disc and two blade groups distributed on the upper side and the lower side of the wheel disc.

Optionally, lower air inlet department is equipped with down the air-inlet grille, down the air-inlet grille includes:

at least two layers of grid plates which are arranged in an overlapped mode at intervals along the vertical direction, wherein each layer of grid plate comprises a plurality of lower grid bars which are arranged at intervals so as to form lower grid holes for air flow to pass through between every two adjacent lower grid bars;

the projection of each lower grid hole of each layer of grid plate in the horizontal plane falls into the projection of the lower grid bars of other layers of grid plates in the horizontal plane, and each lower grid bar of each layer of grid plate is provided with a groove which is opened upwards so as to be at least used for collecting condensed water generated by the lower heat exchanger.

The utility model discloses a casing of machine in air conditioning sets up to set up on the wall in its space of locating with hanging, does not occupy indoor ground space, can let out its below space that is close to ground, supplies user storage article etc. to utilize indoor space better. The utility model discloses an air conditioning indoor unit has two upper and lower air intakes, has enlarged the intake to the air output of air conditioning indoor unit has been enlarged. And simultaneously, the utility model discloses with the air outlet setting in the casing front side, can enlarge the air supply scope of machine in the air conditioning.

Furthermore, the air-conditioning indoor unit further comprises two heat exchangers which are respectively used for carrying out heat exchange with air flow entering the shell through the two air inlets, the positions of the two heat exchangers are specially designed to be respectively positioned on air flow paths between the two air inlets and the fan, the distance between the two heat exchangers and the air outlet is far, a user cannot easily touch the two heat exchangers, the problems that the existing wall-mounted air conditioner is only provided with one heat exchanger, and the heat exchanger is close to the air outlet, so that safety regulations are not met and condensed water is easily blown out can be well solved, the use safety of the user is improved, and the use experience of the.

Furthermore, the cross section of the casing can be integrally in a right-angled triangle shape or a fan shape with a central angle of 90 degrees, so that the air-conditioning indoor unit can be arranged at a wall angle in a hanging mode through the hanging structures arranged on the two transverse side surfaces of the casing, the installation stability of the air-conditioning indoor unit can be ensured, the space where the air-conditioning indoor unit is located can be a corner space where a user does not move frequently, and the influence of the air-conditioning indoor unit on the normal indoor movement of the user is avoided.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

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

fig. 2 is a schematic exploded view of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 3 is a schematic exploded view of an air conditioning indoor unit according to an embodiment of the present invention in another orientation;

fig. 4 is a schematic structural view of an indoor unit of an air conditioner according to another embodiment of the present invention;

fig. 5 is a schematic structural view of an indoor unit of an air conditioner according to still another embodiment of the present invention;

FIG. 6 is a schematic block diagram of a lower air intake grill in accordance with one embodiment of the present invention;

FIG. 7 is a schematic block diagram of a lower air intake grille taken along a vertical cross-sectional plane in accordance with one embodiment of the present invention;

fig. 8 is a schematic cross-sectional view of an upfeed style grate taken along a vertical cross-sectional plane in accordance with an embodiment of the present invention;

FIG. 9 is a schematic block diagram of an upper air intake grill in accordance with another embodiment of the present invention;

fig. 10 is a schematic exploded view of an air conditioning indoor unit according to another embodiment of the present invention.

Detailed Description

The utility model provides an air-conditioning indoor unit. Fig. 1 is a schematic structural view of an air-conditioning indoor unit according to an embodiment of the present invention, fig. 2 is a schematic structural exploded view of an air-conditioning indoor unit according to an embodiment of the present invention, and fig. 3 is a schematic structural exploded view of another direction of an air-conditioning indoor unit according to an embodiment of the present invention. Referring to fig. 1 to 3, an air conditioning indoor unit 1 of the present invention includes a casing 10, a fan 30, an upper heat exchanger 21, and a lower heat exchanger 22.

The casing 10 is suspended on a wall surface in a space where the casing is located, does not occupy the indoor floor space, and can be used for saving the space below the casing close to the floor for a user to store articles and the like, so that the indoor space is better utilized. Further, the cabinet 10 has an upper intake opening 11 and a lower intake opening 12 opened at the top and bottom thereof, respectively, and an outlet opening 13 opened at the front side thereof. The utility model discloses an indoor set 1 of air conditioning has two upper and lower air intakes, has enlarged the intake to the air output of indoor set 1 of air conditioning has been enlarged. And simultaneously, the utility model discloses set up air outlet 13 in casing 10 front side, can enlarge the air supply scope of machine 1 in the air conditioning.

The blower 30 is disposed in the casing 10 for promoting the airflow from the upper air inlet 11 and the lower air inlet 12 toward the air outlet 13.

The upper heat exchanger 21 and the lower heat exchanger 22 are disposed in the casing 10 and are respectively located on the airflow path between the upper air inlet 11 and the lower air inlet 12 and the fan 30, so as to respectively exchange heat with the airflow flowing from the upper air inlet 11 and the lower air inlet 12 to the fan 30. That is to say, the air-conditioning indoor unit 1 includes two heat exchangers, and is used for respectively carrying out the heat exchange with the air current that gets into in the casing 10 through two air intakes, and the position of two heat exchangers designs into being located the air current flow path between two air intakes and fan respectively very much, and is far away with air outlet 13 distance, and the user is difficult to touch, can solve current wall-hanging wall air conditioner that hangs that to set up only one heat exchanger well, and the heat exchanger is close to the air outlet and leads to not conforming to the ann rule and the problem of easily blowing off the comdenstion water, has improved user's safety in utilization, has. Specifically, since the two air inlets are respectively located at the top and the bottom of the housing 10, which are not easily accessible by the user, no potential safety hazard will be generated even if the heat exchanger is closer to the air inlets. And the air outlet 13 is in the front side of the casing 10, so that a user can easily touch the air outlet, the heat exchanger is arranged close to the air outlet, potential safety hazards such as scalding and electric shock are easily caused, and condensed water generated on the heat exchanger can be blown out along with air flow, so that the use experience of the user is influenced.

In some embodiments, the length direction of the cabinet 10 extends in a vertical direction. That is, the shape of the air-conditioning indoor unit 1 is closer to that of a vertical air-conditioning indoor unit, which is beneficial to the air inlet and outlet and installation of the air-conditioning indoor unit 1. Further, the air outlet 13 is a strip-shaped air outlet which is arranged on the front side surface of the casing 10 and extends vertically, so that the air outlet range of the indoor unit 1 of the air conditioner in the vertical direction is enlarged. An air guide mechanism which can swing along the transverse direction can be arranged at the air outlet 13 so as to expand the air outlet range of the indoor unit 1 of the air conditioner in the transverse direction.

In some embodiments, at least one side of the casing 10 other than the front side 10a thereof has a hanging structure 14 for hanging the casing 10 on a wall surface. That is, the hanging structure 14 may be provided on one side surface of the casing 10 other than the front side surface 10a thereof, or the hanging structures 14 may be provided on two other side surfaces of the casing 10 other than the front side surface thereof, as long as the stable mounting of the casing 10 is ensured. Specifically, the hanging structure 14 may be a hanging hole, and the cabinet 10 may be hung on the wall surface by inserting a hook fixed on the wall surface into the hanging hole.

In some embodiments, referring to fig. 1, the cross-section of the enclosure 10 may be generally triangular. At this time, the air outlet 13 may be opened on the front side surface 10a of the casing 10, and the cross section of the front side surface 10a of the casing is any side of the triangle. It will be understood by those skilled in the art that "integral" herein means that the cross-section of the casing 10 may be strictly triangular or substantially triangular, for example, the intersection of two sides may have a chamfer, a cut edge, or the like.

In a further embodiment, the triangle may be a right triangle. The hanging structures 14 are arranged on the two transverse side faces of the casing 10, the cross sections of the two transverse side faces are respectively two right-angle sides of the right-angled triangle, so that the casing 10 is hung at the wall angle formed by the two mutually perpendicular wall faces through the hanging structures 14 on the two transverse side faces, the installation stability of the indoor air conditioner can be ensured, the space where the indoor air conditioner is located can be a corner space where a user does not move frequently, and the influence of the indoor air conditioner on the normal indoor movement of the user is avoided. Further, the triangle may be an isosceles right triangle, so as to arrange the fan, the heat exchanger and other structures in the casing 10, and the appearance is more beautiful.

Fig. 4 is a schematic structural view of an air conditioning indoor unit according to another embodiment of the present invention. In other embodiments, the cross-section of the housing 10 may be generally fan-shaped. At this time, the air outlet 13 is opened on the front side surface 10a of the casing 10, and the cross section of the front side surface 10a of the casing is an arc of the sector. That is, the outlet 13 is formed on the front side surface 10a having a substantially fan shape, and the area of the outlet 13 is relatively large and the air outlet range is relatively wide. Moreover, the fan-shaped appearance is softer and has stronger aesthetic feeling. It will be understood by those skilled in the art that "integral" herein means that the cross-section of the housing 10 may be strictly fan-shaped or substantially fan-shaped, for example, a curved arc may connect two straight radii by two straight lines.

In a further embodiment, the central angle of the fan-shape is 90 °. The hanging structures 14 are arranged on the two transverse side surfaces of the casing 10, the cross sections of the two transverse side surfaces are respectively provided with the two fan-shaped radiuses, so that the casing 10 is hung at the wall corner formed by the two mutually perpendicular wall surfaces through the hanging structures 14 on the two transverse side surfaces, the installation stability of the indoor air conditioner can be ensured, the space where the indoor air conditioner 1 is located can be a corner space where a user does not move frequently, and the influence of the indoor air conditioner 1 on the normal indoor movement of the user is avoided.

In some alternative embodiments, the central angle of the fan shape may be any other angle between 60 ° and 180 °.

Fig. 5 is a schematic structural view of an air conditioning indoor unit according to still another embodiment of the present invention. In still other embodiments, the cross-section of the enclosure 10 may be generally square. At this time, the hanging structure may be opened at a rear side of the cabinet 10 disposed opposite to the front side 10a thereof.

In alternative embodiments, the cross-section of the housing 10 may be generally circular, pentagonal, or other suitable shape.

In some embodiments, the upper heat exchanger 21 may be disposed substantially horizontally above the fan 30. The lower heat exchanger 22 may be disposed substantially horizontally below the fan 30. This can reduce the height of the air conditioning indoor unit 1 in the vertical direction as much as possible, and reduce the volume thereof. In some alternative embodiments, the upper heat exchanger 21 and the lower heat exchanger 22 may also be disposed obliquely above and below the blower 30 in the lateral direction, respectively. For example, the upper heat exchanger 21 and the lower heat exchanger 22 may be disposed at a predetermined angle with respect to the horizontal plane. Both the two heat exchangers can be flat plate heat exchangers or multi-section bending heat exchangers.

In some embodiments, the fan 30 is a double suction centrifugal fan and includes a volute 31 and a double suction impeller 32. The scroll casing 31 has an upper airflow inlet 311 opposite to the upper intake opening 11, a lower airflow inlet 312 opposite to the lower intake opening 12, and an airflow outlet 313 opposite to the outlet opening 13. The double suction impeller 32 is disposed in the volute 31, a rotating shaft of the double suction impeller can extend in a vertical direction, and the double suction impeller has a horizontally disposed wheel disc 321 and two blade groups 322 distributed on upper and lower sides of the wheel disc 321, and each blade group 322 includes a plurality of blades.

When the fan 30 rotates, air in the impeller flow channel formed between two adjacent blades moves radially outward under the action of centrifugal force, so that the air pressure in the middle of the double-suction impeller 32 is lower than the external atmospheric pressure. Under the action of the pressure difference, the airflow above and below the fan 30 is axially sucked into the volute 31 through the upper airflow inlet 311 and the lower airflow inlet 312 of the volute 31, changes direction at the double-suction impeller 32, and flows to the airflow outlet 313 through the impeller flow channel of the double-suction impeller 32. Because the disk 321 separates the two blade sets 322, the air flow entering through the upper and lower air flow inlets 311, 312 does not create any mixing or interference.

Further, the upper heat exchanger 21 is located between the upper intake opening 11 and the upper airflow inlet 311 to sufficiently contact and exchange heat with the airflow flowing toward the upper airflow inlet 311 through the upper intake opening 11. Likewise, the lower heat exchanger 22 is positioned between the lower intake vent 12 and the lower airflow inlet 312 for substantially contacting and exchanging heat with the airflow flowing through the lower intake vent 12 to the lower airflow inlet 312.

In some embodiments, the lower air inlet 12 is provided with a lower air inlet grille 50. The shape of the lower grill 50 may match the shape of the cabinet 10. The lower grill 50 may be a conventional grill or other specially designed grill.

Fig. 6 is a schematic structural view of a lower air intake grill according to an embodiment of the present invention. Referring to fig. 6, the lower air-inlet grille 50 includes at least two layers of grille plates 51 arranged in an up-down direction at intervals. Each of the grid plates 51 includes a plurality of lower grid bars 511 arranged at intervals to form lower grid holes 512 for passing the air flow between two adjacent lower grid bars 511. Each lower grid 511 is a long and thin strip, and the lower grid hole 512 between two adjacent lower grids 511 is also a long strip. The lower grid holes formed by the method are more in number and relatively dense, so that the air inlet of the lower air inlet cannot be influenced, and the wind resistance is smaller.

Further, the projection of each lower grid hole 512 of each grid plate 51 in the horizontal plane falls into the projection of the lower grid strips 511 of the other grid plates 51 in the horizontal plane. That is, in the vertical direction, each lower grid hole 512 of each layer of grid plate 51 can be completely blocked by the lower grid strips 511 of the other layers of grid plates 41 in the vertical direction. Therefore, the condensed water generated on the lower heat exchanger 22 can fall vertically downward on the lower grid 511 under the action of its own weight, and will not drop outside the casing 10 through any lower grid hole 512, which improves the user experience. It can be seen that, the utility model discloses a lower air-inlet grille 50 has integrateed traditional air-inlet grille and water collector's dual function simultaneously under the prerequisite that does not influence lower air intake 12 intake, and the structure is very simple moreover.

Fig. 7 is a schematic block diagram of a lower air intake grille taken along a vertical cross-sectional plane in accordance with an embodiment of the present invention. Referring to fig. 6 and 7, in some embodiments, each lower grid 511 of each grid 51 has an upwardly open recess 513 for collecting condensate water produced by the lower heat exchanger 22. The grooves 513 with upward openings can collect a relatively large amount of condensed water, so as to prevent the condensed water from dripping from the lower grid strips 511 to the outside of the cabinet 10. Specifically, the groove 513 may extend along the length direction of the lower grill 511, and the vertical section of the groove 513 may be arc-shaped, V-shaped, U-shaped, or other suitable shapes.

Further, any one of the grid plates 51 other than the lowermost layer is in fluid communication with the lowermost grid plate 51 directly or indirectly, so as to allow condensed water collected on any one of the grid plates 51 other than the lowermost layer to converge to the lowermost grid plate 51. Thereby, it is facilitated to discharge the condensed water collected by all the grill plates 51 to the outside of the indoor unit 1 of the air conditioner through the lowermost grill plate 51. For example, the condensed water collected by the entire lower grill 50 may be discharged to the outside of the indoor unit 1 through a drain pipe communicating with the lowermost grill plate 51.

In some embodiments, each of the grid plates 51 further includes an outer grid frame 514, and a collecting groove 515 for collecting condensed water is formed at an inner edge of the outer grid frame 514. Both ends of each lower grid 511 of each grid plate 51 are connected with the outer grid frame 514 of the grid plate 51, and the groove 513 of each lower grid 511 of each grid plate 51 is communicated with the confluence groove 515 of the grid plate 51, so that the condensed water collected by each lower grid 511 flows into the confluence groove 515 through the groove 513 and is converged.

In some embodiments, the flow-joining grooves 515 of any one of the grid plates 51 except the lowermost layer are directly communicated with the flow-joining grooves 515 of the grid plates 51 of the lowermost layer through the flow-guiding holes 516, so that the condensed water collected by any one of the grid plates 51 except the lowermost layer directly flows to the flow-joining grooves 515 of the grid plates 51 of the lowermost layer. In other embodiments, the flow-joining grooves 515 of any grid plate 51 except the lowermost grid plate are directly communicated with the flow-joining grooves 515 of the grid plates 51 adjacent to and below the grid plate through the flow-guiding holes 516, so that the condensed water collected by each grid plate 51 flows down layer by layer until the condensed water flows to the flow-joining grooves 515 of the lowermost grid plate 51.

Specifically, the flow guide holes 516 may be opened at least one end portion of the grid plate 51 and communicate with the flow collecting grooves 515 thereof. In the embodiment shown in fig. 6 and 7, the lower air inlet grille 50 comprises an upper grille plate 51 and a lower grille plate 51, one end of the upper grille plate 51 is provided with a flow guiding column 517 which protrudes vertically downwards and extends to the lower grille plate 51, and the flow guiding column 517 is hollow, so as to form a flow guiding hole 516. The bottom of the flow guiding column 517 can extend into the flow converging groove 515 of the lower grid plate 51, and the bottom of the flow guiding column 517 is provided with a notch, so that the flow guiding hole 516 formed therein is communicated with the flow converging groove 515 of the lower grid plate 51. It will be appreciated that the flow posts 517 also serve to secure and support the upper grid panel 51. In other embodiments, other structures may be additionally provided to fix and support the upper grid plate 51. In some alternative embodiments, flow guiding columns and holes may be disposed at the other end or other edge of the upper grid 51.

In some embodiments, the groove 513 is a through groove penetrating the lower bars 511 along the length direction of the lower bars 511, that is, the groove 513 is a through groove with both ends open so as to communicate with the bus bar 515. Moreover, the height of the lower grid 511 in the vertical direction is gradually reduced from the middle to the two ends thereof, for example, the lower grid 511 may be approximately in an arch shape with the middle high and the two ends low, which is beneficial for the condensed water collected by the lower grid 511 to flow into the confluence groove 515 along the groove 513, so as to avoid the problem that the lower heat exchanger 22 is easy to frost due to the fact that the condensed water is retained on the lower grid 511 for a long time and the water content of the intake air flow is large.

In some embodiments, each layer of grid plate 51 is inclined at a predetermined angle to the horizontal plane (see fig. 5), which is beneficial for the condensed water collected by each layer of grid plate 51 to flow to one side of the grid plate 51 under the action of its own gravity, so as to be collected together and be conveniently discharged, thereby avoiding the problem that the condensed water is retained on the grid plate 51 for a long time to cause the problem that the lower heat exchanger 22 is easily frosted due to the large water content of the intake air flow. In these embodiments, the diversion holes 516 may be disposed at the lower end of the grating plate 51 to facilitate drainage of the condensed water.

Further, the inclined directions of the grill plates 51 are the same to reduce the volume occupied by the lower grill 50 in the vertical direction as much as possible, thereby reducing the space occupied by the entire indoor unit 1 of the air conditioner. It will be understood by those skilled in the art that "tilt direction" herein means the tendency of the grating plates 51 to tilt, and does not include a tilt angle. For example, each layer of grating plates 51 may each be sloped downward from front to back, or sloped upward from front to back, or sloped downward from left to back, or sloped upward from left to right, and so forth.

In some embodiments, the inclination angles of the layers of grating plates 51 may be the same, and in this case, the layers of grating plates 51 are disposed substantially in parallel to minimize the space occupied by the lower air inlet grating 50 in the vertical direction. In other embodiments, the inclination angle of each layer of grating plates 51 can decrease from top to bottom, i.e., the inclination degree of each layer of grating plates 51 decreases from top to bottom. This is because the uppermost grid plate 51 is closest to the lower heat exchanger 22 and receives a relatively large amount of condensed water, and therefore, the inclination is set to the maximum, which is advantageous for the condensed water received thereon to be collected in the lowermost grid plate 51 in time.

Further, the lower grills 511 of each layer of the grille plates 51 extend in the transverse direction of the cabinet 10, and the plurality of lower grills 511 are arranged at intervals in the front-rear direction (i.e., the depth direction of the cabinet 10). Each layer of grid plate 51 all extends downwards from the past to the back to make the shared space of indoor set 1 of air conditioner in vertical direction increase in proper order from the past to the back, from this, can put the great part of occupation space in the rear side of indoor set of air conditioner, can enough accelerate the flow and the emission of comdenstion water on the grid plate 51, can avoid indoor set 1 of air conditioner front side to occupy great space again and bring the inconvenience of use for the user.

In some embodiments, the plurality of lower grid bars 511 of the same grid plate 51 are uniformly arranged at equal intervals, so that the width of each lower grid hole 512 of the grid plate 51 is uniform. The width of the lower grid holes 512 of each grid plate 51 may be the same as or different from the width of the lower grid holes 512 of other grid plates 51. The distance between two adjacent layers of grid plates 51 is far larger than the width of the lower grid hole of any one layer of grid plate 51. The "much larger" referred to herein may be more than twice as large. Because the lower grid holes 512 of two adjacent layers of grid plates 51 are arranged in a staggered manner, the flow direction of the airflow passing through two adjacent layers of grid plates 51 is slightly changed. Therefore, the distance between two adjacent layers of grid plates 51 is designed to be far larger than the width of the lower grid holes 512 of any layer of grid plate 51, so that sufficient space for changing the direction of air flow can be ensured between two adjacent layers of grid plates 51, the air flow flowing resistance is further reduced, and the air inlet amount is ensured.

Further, the width of the lower grid holes 512 of each layer of grid plate 51 increases from bottom to top. In other words, the widths of the lower grid holes 512 of each layer of grid plate 51 increase in sequence along the airflow direction. That is, the lower grid holes 512 closer to the lower grid plate 51 have a smaller width. Therefore, resistance encountered when the airflow sequentially flows through each layer of grid plate 51 from bottom to top can be further reduced, and the condensed water is ensured not to drop through the lower grid holes 512. Meanwhile, the width of the lower grid holes 512 of the uppermost grid plate 51 is relatively large, the airflow flowing area of the lower heat exchanger 22 is increased, the airflow is conveniently and uniformly contacted with the lower heat exchanger 22, and the heat exchange efficiency is improved.

Specifically, the width of the lower grid bars 511 of each layer of grid plate 51 in the transverse direction decreases from bottom to top, so that the width of the lower grid holes 512 of each layer of grid plate 51 increases from bottom to top.

In some embodiments, the projection of the lower air grille 50 in the horizontal plane corresponds to the cross-sectional shape of the cabinet 10. For example, the lower air grille 50 shown in FIG. 4 has a square projection in the horizontal plane, which is suitable for a square enclosure. It will be appreciated that when the cross-section of the housing 10 is generally triangular, the projection of the lower grill 50 in the horizontal plane is also triangular.

Those skilled in the art will appreciate that in some alternative embodiments, the lower air intake grille 50 may also be a common air intake grille having only a grille function. In this case, a serpentine, stacked or other suitable drip tray may be provided below the lower heat exchanger 22 as long as the intake air is not affected.

In some embodiments, an upper air inlet grille 40 is disposed at the upper air inlet 11. Fig. 8 is a schematic cross-sectional view of an upper grill according to an embodiment of the present invention, which is taken along a vertical cross-sectional plane, and referring to fig. 8, the upper grill 40 includes a plurality of upper grills 41 extending in a transverse direction and spaced along a depth direction (i.e., a front-back direction) of the housing 10, and each of the upper grills 41 includes a first grill 411 inclined backward in the depth direction from top to bottom, so that an upper grill hole 42 for passing an air flow toward an upper front side of the housing 10 is formed between the first grills 411 of two adjacent upper grills 41, so as to pass the air flow. That is, the upper grill 40 is opened to the upper front of the cabinet 10. Because the front of the indoor unit 1 of the air conditioner is wider, the space is sufficient, the indoor unit cannot be shielded by a top wall surface, a left wall surface, a right wall surface or other objects, the air inlet quantity is stable, the air return phenomenon cannot occur, the position of the indoor unit 1 of the air conditioner can be selected at will, and the flexibility is higher. The utility model discloses need not change under the prerequisite of last air inlet 11 positions on the structural basis of traditional air conditioning indoor set, only carry out the structure to last air inlet grid 40 and design very much and just can change the air inlet direction of casing 10 into from the place ahead air inlet by the air inlet of top-down, not only gained good air inlet effect, the structure is very simple moreover, almost need not increase the cost.

Specifically, the first louver 411 may be an elongated bar-shaped plate body extending in the transverse direction of the cabinet 10, and the upper louver hole 412 formed between two adjacent first louver 411 is an elongated bar-shaped hole extending in the transverse direction of the cabinet 10.

In some embodiments, the frontmost contour line of the upper grill 41 is more forward than the rearmost contour line of an upper grill 41 adjacently located on the front side of the upper grill 41. In other embodiments, the front-most contour of the upper grill 41 is flush with the rear-most contour of an upper grill 41 located adjacent to the front side of the upper grill 41. That is, the projections of the two adjacent upper grills 41 in the horizontal plane have overlapping portions or are right next to each other, so that the projection of the entire upper air inlet grille 40 in the horizontal plane is continuous without interruption, and therefore, the dust from the top to the bottom falls on the upper surfaces of the upper grills 41, thereby being completely blocked outside the cabinet 10. It is visible, the utility model discloses an enterprising style bars 40 has not only kept traditional air inlet function, has good air inlet effect, but also can play fine effect that hides grey dust keeping off.

In some embodiments, first louver 411 extends rearward in a straight line from top to bottom to form a flat plate shape. In other embodiments, first louver 411 extends rearward along a smooth curve from top to bottom to form an upwardly arched curved plate. The first grid plates 411 with the two shapes can enable the wall surface of the upper grid hole 42 to be smoother, reduce the wind resistance of airflow flowing through the upper grid hole 42 and reduce noise; meanwhile, the aperture size of the upper grid hole 42 is enlarged, and the air inlet space of the upper air inlet grid 40 is enlarged, so that air inlet is smoother, and the air inlet amount is larger.

In some embodiments, the upper grill 40 further includes an outer frame 43, and both ends of each upper grill bar 41 are connected to the outer frame 43, respectively. The two end edges of the first grid plate 411 are connected with the outer frame 43 through the end plates 44 extending vertically, so that the connection between the first grid plate 411 and the outer frame 43 is reinforced, and the structural strength of the upper air inlet grille 40 is improved.

Further, the upper grid 41 further comprises a second grid 412 connected with the bottom edge of the first grid 411, and two ends of the second grid 412 are respectively connected with the outer frame 43, so that the deformation of the strip-shaped first grid 411 after long-time use can be avoided, and the structural strength and the structural stability of the upper air inlet grid 40 are improved.

Further, the second louver 412 may be a flat plate body extending in a horizontal direction. The contact area between both ends of the flat plate body and the outer frame 43 is large, and therefore, the coupling strength and stability are high.

In some embodiments, the projection of the upper grill 40 in the horizontal plane corresponds to the cross-sectional shape of the cabinet 10. That is, when the cross section of the casing 10 is generally triangular, the projection of the upper air-inlet grille 40 in the horizontal plane is also generally triangular; when the cross section of the casing 10 is overall fan-shaped, the projection of the upper air inlet grille 40 in the horizontal plane is also approximately fan-shaped; when the cross section of the casing 10 is generally square, the projection of the upper grill 40 in the horizontal plane is also generally square.

Fig. 9 is a schematic structural view of an upper air intake grill according to another embodiment of the present invention. In other embodiments, top stylized grate 40 includes a body 44 formed with a plurality of openings 441 and a plurality of curtain portions 45 that are upwardly arched relative to body 44. Each shield 45 is arranged such that a projection onto a horizontal plane covers at least a part of one opening 441. Therefore, the dust falling into the shell 10 from the upper air inlet 11 can be reduced while the occupied space is not increased, the cleaning period of the indoor unit of the air conditioner is further shortened, and the convenience of users is improved.

Further, each of the shielding portions 45 includes a shielding plate 451 extending in the lateral direction and placed horizontally, and two end plates 452 connected between both ends of the shielding plate 451 and the main body 44, respectively. The height of the shielding plate 451 of the plurality of shielding portions 45 is set to gradually increase from front to rear in the depth direction of the cabinet 10. From this, can make the air inlet space between two adjacent shielding parts 45 open towards the front side of casing 10, not only enlarge the size in air inlet space, improved air conditioning indoor set's intake, more importantly, the front side of casing 10 is wide, and the space is sufficient, can not receive the top wall, control the wall or other object's sheltering from, and the intake is stable, can not appear the return air phenomenon, therefore air conditioning indoor set 1's position can be selected at will, and the flexibility is higher.

In order to avoid the condensed water generated by the upper heat exchanger 21 from falling into the blower 30, in some embodiments, the present invention also provides a special design for the structure of the upper heat exchanger 21 and the blower volute 31.

Fig. 10 is a schematic exploded view of an air conditioning indoor unit according to another embodiment of the present invention. Referring to fig. 10, the upper heat exchanger 21 has a through hole 211 penetrating vertically, and a projection of the upper airflow inlet 311 in the horizontal plane falls in a projection of the through hole 211 in the horizontal plane. That is to say, the upper heat exchanger 21 does not have a heat exchange structure facing the upper airflow inlet 311 in the vertical direction, so that the condensed water generated by the upper heat exchanger 21 only drops outside the volute casing 31 and does not drop into the volute casing 31 through the upper airflow inlet 311, which not only can prevent the potential safety hazard caused by the contact of the devices such as the motor and the like with the condensed water, but also can prevent the condensed water from adhering to the impeller 32 in the volute casing 31, thereby avoiding the condensed water blown out by the indoor unit 1 of the air conditioner, and improving the user experience.

Meanwhile, because a part of the air flow entering through the upper air inlet 11 is subjected to heat exchange through the heat exchange structure of the upper heat exchanger 21 and then flows to the fan 30, the other part of the air flow directly flows to the fan 30 without being subjected to heat exchange through the through hole 211 of the upper heat exchanger 21, and the two parts of the air flow are mixed in the fan 30 and then are sent out from the air outlet 13. Therefore, the airflow blown out from the air outlet 13 is mixed airflow which is subjected to heat exchange and is not subjected to heat exchange, the temperature of the airflow is relatively soft, the user feels warm but not hot, cool but not cold, and the comfort experience of the user is improved.

In some embodiments, the upper airflow inlet 311 is formed at a top surface of the volute 31. The circumferential edge of the upper airflow inlet 311 is provided with a water blocking rib 314 that protrudes upward from the top surface of the scroll casing 31. The water blocking rib 314, which is annular and surrounds the entire circumferential edge of the upper airflow inlet 311, effectively prevents the condensed water on the top surface of the scroll casing 31 from flowing into the inside of the scroll casing 31 through the edge of the upper airflow inlet 311.

In some embodiments, the top surface of the volute casing 31 may be configured to be gradually inclined downward along the radially outer side of the upper airflow inlet 311, so that the condensed water received thereon flows downward to avoid the condensed water from collecting on the top surface of the volute casing 31.

Further, the peripheral edge of the airflow outlet 313 is provided with a flange 315 extending outward along the radial direction, and the flange 315 can prevent the condensed water on the outer surface of the scroll casing 31 from adhering to the peripheral edge of the airflow outlet 313 and blowing out along with the airflow, thereby further preventing the air conditioning indoor unit 1 from blowing out the condensed water.

In the above embodiments of the present invention, other structures in the drawings used for specifically describing one structure of the casing 10, the upper grill 40, the upper heat exchanger 21, the fan 30, and the lower grill 50 may be common structures. Those skilled in the art will appreciate that in some embodiments, the indoor unit 1 may include the specially designed casing 10, the upper grill 40, the upper heat exchanger 21, the fan 30, and the lower grill 50 in many or all of the above embodiments. For example, the lower grill 50 of FIG. 2 may be replaced with the lower grill 50 of FIG. 6 by simply modifying it to a triangular shape.

It should be understood by those skilled in the art that the terms "upper", "lower", "top", "bottom", "horizontal", "front", "back", etc. used in the embodiments of the present invention to indicate the orientation or the position relationship are based on the actual use state of the indoor unit 1 of the air conditioner, and these terms are only used for convenience of description and understanding of the technical solution of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore, should not be interpreted as limiting the present invention.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

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

the shell is arranged on the wall surface in the space where the shell is arranged in a hanging manner, and is provided with an upper air inlet, a lower air inlet and an air outlet, wherein the upper air inlet and the lower air inlet are respectively arranged at the top and the bottom of the shell, and the air outlet is arranged at the front side of the shell;

the fan is arranged in the shell and used for promoting airflow to flow from the upper air inlet and the lower air inlet to the air outlet; and

and the upper heat exchanger and the lower heat exchanger are arranged in the shell and are respectively positioned on airflow flow paths between the upper air inlet and the lower air inlet and the fan so as to respectively exchange heat with airflow flowing to the fan from the upper air inlet and the lower air inlet.

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

the length direction of the shell extends along the vertical direction; and is

The air outlet is a bar-shaped air outlet which is arranged on the front side surface of the machine shell and extends vertically.

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

at least one side surface of the casing except the front side surface is provided with a hanging structure for hanging and arranging the casing on the wall surface.

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

the cross section of the shell is integrally triangular; and is

The air outlet is formed in the front side face of the machine shell, and the cross section of the front side face of the machine shell is any side of the triangle.

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

the triangle is a right-angle triangle; and is

The hanging structure is arranged on two transverse side surfaces of the casing, the cross sections of the two transverse side surfaces are respectively two right-angle sides of the right-angled triangle, so that the casing is hung at a wall corner formed by two mutually vertical wall surfaces through the hanging structure on the transverse side surfaces.

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

the cross section of the shell is integrally fan-shaped; and is

The air outlet is arranged on the front side face of the machine shell, and the cross section of the front side face of the machine shell is a fan-shaped arc line.

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

the central angle of the fan shape is 90 degrees; and is

The wall is characterized in that the hanging structures are arranged on two transverse side surfaces of the casing, the cross sections of the two transverse side surfaces are respectively provided with two fan-shaped radiuses, so that the casing is hung at a corner formed by two mutually vertical wall surfaces through the hanging structures on the two transverse side surfaces.

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

the upper heat exchanger is horizontally arranged above the fan; and/or

The lower heat exchanger is horizontally arranged below the fan.

9. An indoor unit of an air conditioner according to claim 1, wherein the fan is a centrifugal fan of a double suction type, and comprises:

a volute having an upper airflow inlet opposite to the upper intake opening, a lower airflow inlet opposite to the lower intake opening, and an airflow outlet opposite to the air outlet; and

the double-suction impeller is arranged in the volute and is provided with a horizontally placed wheel disc and two blade groups distributed on the upper side and the lower side of the wheel disc.

10. An indoor unit of an air conditioner according to claim 1, wherein a lower air inlet grille is provided at the lower air inlet, and the lower air inlet grille includes:

at least two layers of grid plates which are arranged in an overlapped mode at intervals along the vertical direction, wherein each layer of grid plate comprises a plurality of lower grid bars which are arranged at intervals so as to form lower grid holes for air flow to pass through between every two adjacent lower grid bars;

the projection of each lower grid hole of each layer of grid plate in the horizontal plane falls into the projection of the lower grid bars of other layers of grid plates in the horizontal plane, and each lower grid bar of each layer of grid plate is provided with a groove which is opened upwards so as to be at least used for collecting condensed water generated by the lower heat exchanger.

Images