CN113124497B

CN113124497B - Indoor unit of air conditioner

Info

Publication number: CN113124497B
Application number: CN201911416283.7A
Authority: CN
Inventors: 林晨; 大森宏; 江晨钟; 何家基; 岳宝
Original assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2023-01-03
Anticipated expiration: 2039-12-31
Also published as: CN113124497A

Abstract

The application discloses machine in air conditioning includes: the air inlet area and the air outlet area which are opposite to each other in the first direction are formed on the shell, and the shell forms an accommodating cavity; the heat exchanger is arranged in the accommodating cavity and comprises at least one heat exchange sheet arranged at intervals along the second direction; the width of the heat exchange plate in the third direction is gradually reduced from the air inlet area to the air outlet area; at least one heat exchanger is arranged in a third direction; the first direction, the second direction and the third direction are mutually vertical; at least one water catch bowl sets up in the holding intracavity, and every water catch bowl sets up between a heat exchanger and air-out district, and the notch orientation of water catch bowl the heat exchanger. The air conditioner indoor unit can achieve low-noise refrigeration and air supply.

Description

Indoor unit of air conditioner

Technical Field

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

Background

At present, indoor air conditioning units mostly suck indoor return air into an indoor unit through a fan, and then blow cold air obtained after heat exchange of an evaporator into the indoor unit, so that the air quantity is large, the noise generated by operation of the fan is large, and poor experience is caused for users.

Disclosure of Invention

The application provides an air-conditioning indoor unit to solve the problem that the air-conditioning indoor unit in the prior art is large in noise and air volume.

In order to solve the above technical problem, the present application provides an air conditioning indoor unit, including: the air inlet area and the air outlet area which are opposite to each other in the first direction are formed on the shell, and the shell forms an accommodating cavity; the heat exchanger is arranged in the accommodating cavity and comprises at least one heat exchange sheet arranged at intervals along the second direction; the width of the heat exchange fins in the third direction is gradually reduced from the air inlet area to the air outlet area; at least one heat exchanger is arranged in a third direction; the first direction, the second direction and the third direction are mutually vertical; at least one water catch bowl sets up in the holding intracavity, and every water catch bowl sets up between a heat exchanger and air-out district, and the notch of water catch bowl is towards the heat exchanger.

The heat exchanger comprises at least one first heat exchange pipeline arranged in parallel at intervals along a first reference plane, the at least one first heat exchange pipeline penetrates through the at least one heat exchange plate, and a first included angle formed between the first reference plane and the first direction ranges from 0 degree to 30 degrees.

The heat exchanger comprises at least one second heat exchange pipeline arranged in parallel along a second reference plane at intervals, the at least one second heat exchange pipeline penetrates through at least one heat exchange sheet, a second included angle formed between the second reference plane and the first direction is 5-30 degrees, and the second included angle is larger than or equal to the first included angle.

The heat exchange fins comprise first heat exchange fins and second heat exchange fins, at least one first heat exchange pipeline penetrates through at least one first heat exchange fin, and at least one second heat exchange pipeline penetrates through at least one second heat exchange fin; the first heat exchange sheet and the second heat exchange sheet are mutually abutted at one ends close to the air outlet area, and the other ends close to the air inlet area are mutually spaced.

The heat exchange plate is integrated with a heat exchange pipeline inside, the area where the heat exchange pipeline is located is provided with a first thickness, the other areas of the heat exchange plate outside the heat exchange pipeline are provided with a second thickness, and the ratio of the first thickness to the second thickness is larger than or equal to 1.2 and smaller than or equal to 2.

And the ratio of the second thickness to the distance between two adjacent heat exchange plates is more than or equal to 0.01 and less than or equal to 0.5.

The shell has an average height in the first direction, an average length in the second direction and an average width in the third direction, the product of the average height, the average length and the average width is greater than or equal to 0.02 cubic meter, the ratio of the average height to the average length is greater than or equal to 0.1 and less than or equal to 1, the ratio of the average width to the average length is greater than or equal to 0.15 and less than or equal to 5, and the ratio of the average height to the average width is greater than or equal to 0.3 and less than or equal to 3.

At least one of the two opposite side surfaces of the water collecting tank in the third direction is an inclined plane, so that the width of the water collecting tank in the third direction is gradually reduced from the air inlet area to the air outlet area.

Wherein, the included angle between the inclined plane and the first direction is 5-60 degrees.

The shell comprises an upper side plate and a lower side plate which are oppositely arranged along a first direction, the ratio of the area of the air inlet area to the area of the upper side plate is more than or equal to 0.4 and less than 1, and the ratio of the area of the air outlet area to the area of the lower side plate is more than or equal to 0.4 and less than 1.

The application provides an indoor unit of air conditioner, wherein, forms relative inlet air district and air-out district on the casing in the first direction, and the casing constitutes the holding chamber, and heat exchanger and water catch bowl are located the holding intracavity, and the heat exchanger includes at least one heat exchanger fin that the second direction interval set up, and the quantity of heat exchanger is at least one, arranges the setting in the third direction, and the air that gets into the holding chamber from the inlet air district is through the heat exchanger cooling, by air-out district discharge. And in the direction of going into the wind zone to the air-out district, also be the comdenstion water flow direction, the heat exchanger fin reduces gradually in the third direction width, corresponds the heat exchanger and also sets up the water catch bowl, avoids the comdenstion water influence when guaranteeing refrigerate. Continuous and natural refrigeration air convection is carried out in the air conditioner indoor unit, and refrigeration air supply with low noise and low wind sensation is achieved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

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

fig. 2 is a side schematic view of the air conditioning indoor unit of the embodiment of fig. 1;

fig. 3 is a schematic front view of the embodiment of the air conditioning indoor unit shown in fig. 1;

FIG. 4 is a schematic top view of the embodiment of the air conditioning indoor unit of FIG. 1;

fig. 5 is another schematic structural diagram of a heat exchanger in the embodiment of the indoor unit of the air conditioner shown in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that if directional indications (such as up, down, left, right, front, back, 8230; \8230;) are referred to in the embodiments of the present application, the directional indications are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope claimed in the present application.

Referring to fig. 1-4, fig. 1 is a schematic structural view of an embodiment of an air conditioning indoor unit of the present application, fig. 2 is a schematic side view of the embodiment of the air conditioning indoor unit shown in fig. 1, fig. 3 is a schematic front view of the embodiment of the air conditioning indoor unit shown in fig. 1, and fig. 4 is a schematic top view of the embodiment of the air conditioning indoor unit shown in fig. 1. The air conditioning indoor unit 100 of the present embodiment includes a casing 11, a heat exchanger 12, and a water collection tank 13.

The housing 11 forms an accommodating cavity 111, and an air inlet area 112 and an air outlet area 113 opposite to each other are formed on the housing 11 in the first direction X. When the indoor unit 100 of the air conditioner of this embodiment is in use, the first direction X is set as a vertical direction, and air enters from the air inlet area 112 and is discharged from the air outlet area 113, so as to form a cool air deposition channel from top to bottom.

The heat exchanger 12 is arranged in the accommodating cavity 111 to cool air entering from the air inlet area 112, and the cooled air is naturally deposited and discharged from the air outlet area 113.

In this embodiment, the heat exchanger 12 includes at least one heat exchanging fin 121 spaced along the second direction Y, and the number of the heat exchangers 12 is at least one, and the heat exchangers are arranged in a third direction Z. I.e. each heat exchanger 12 comprises a set of at least one heat exchanger fin 121, in the present embodiment there is at least one heat exchanger 12, i.e. at least one set of heat exchanger fins 121 is arranged in the third direction Z. The first direction X, the second direction Y and the third direction Z are mutually perpendicular.

The air entering the air inlet area 112 is cooled by the heat exchanger 12 and is deposited and discharged from the air outlet area 113, during which the heat exchanger 12 has a certain resistance to the air, and in order to reduce the resistance, the heat exchange fins 121 are arranged in a regular manner in the present embodiment, that is, in the second direction Y and the third direction Z, the heat exchange fins are arranged in a flush manner.

Further, the projection of the air intake zone 112 in the first direction X falls within the area formed by all the heat exchangers 12. Through this kind of arrangement, make the air homoenergetic that gets into by the intake zone pass through the heat exchanger, then improve heat exchange efficiency.

The present embodiment is mainly applied to a central air conditioner, and the natural convection refrigeration mainly enters from the air inlet area 112 and exits from the air outlet area 113. The sizes of the air inlet area 112 and the air outlet area 113 determine the size of the refrigeration effect, specifically, the housing 11 is provided with an upper side plate and a lower side plate in the first direction X, the ratio of the area A1 of the air inlet area 112 to the area A2 of the upper side plate is greater than or equal to 0.4 and less than 1, as shown in fig. 4, the area A1 of the air inlet area 112 is the area enclosed by the air inlet, and the area A2 of the upper side plate is the area enclosed by the edge of the upper side plate. Similarly, the ratio of the area B1 of the air-out region 113 to the area B2 of the lower side plate is greater than or equal to 0.4 and less than 1.

The ratio of the inlet area 112 may be greater than that of the outlet area 113, so as to facilitate the discharge of the cool air. If the ratio is closer to 1, the refrigeration efficiency is high; if the ratio is closer to 0.4, the refrigeration efficiency is low, natural convection refrigeration is applied to improve the body feeling of a human body, and when an overhigh refrigeration effect is not needed, a proper ratio can be selected according to specific conditions.

In use of the present embodiment, the air conditioning indoor unit 100 is placed with the first direction as a vertical direction, corresponding to a downward deposition direction of the cool air. At this time, the condensed water generated by the heat exchanger 12 also flows downward and flows toward the air-out area 113, so in this embodiment, a water collecting tank 13 is further disposed on a side of the heat exchanger 12 facing the air-out area 113, that is, the water collecting tank 13 is located between the heat exchanger 12 and the air-out area 113, and the notch 131 of the water collecting tank 13 faces the heat exchanger 12.

The arrangement of the water collecting tank 13 may cause a certain obstruction to the sedimentation of the cold air, and therefore, in this embodiment, in the direction from the air inlet area 112 to the air outlet area 113, the width W1 of the heat exchanging fins 121 in the third direction Z is gradually reduced, and the width W21 of the notch 131 of the water collecting tank 13 in the third direction Z is greater than the width W11 of one end of the heat exchanging fins 121 facing the water collecting tank 13 in the third direction Z, so that, in the direction from the air inlet area 112 to the air outlet area 113, the width W1 of the heat exchanging fins 121 is reduced, that is, the size of the water collecting tank 13 can be reduced; in addition, the width W1 of the heat exchanger fin 121 is large in the direction toward the air intake area 112, so that the heat exchanger 12 can cover the air intake area 112 as much as possible.

Further, at least one of opposite side surfaces of the water collection groove 13 in the third direction Z is a slope 132 such that a width W2 of the water collection groove 13 in the third direction Z is gradually reduced from the wind-in area 112 to the wind-out area 113. The formation of stagnant zones after the cold air has passed through the water collection sump 13 is avoided. The inclined surface 132 forms an angle of 5 to 60 degrees with the first direction X.

If a plurality of heat exchangers 12 are provided in the present embodiment, a plurality of water collecting troughs 13 are correspondingly provided, the water collecting troughs 13 all extend in the second direction Y and are arranged in parallel in the third direction Z, and the water collecting troughs 13 are provided with a water collecting and draining structure 14 at least one of two ends in the second direction Y, so that the water collecting troughs 13 are uniformly inclined toward the water draining structure 14 for facilitating the drainage of the condensed water.

The scheme of the embodiment is suitable for a central air conditioner, namely, an air conditioner structure with small height and large length and width. For example, the housing 11 in this embodiment has an average height H3 in the first direction, an average length D3 in the second direction, and an average width W3 in the third direction.

Wherein, the product of the average height H3, the average length D3 and the average width W3 is more than or equal to 0.02 cubic meter, the ratio of the average height H3 to the average length D3 is more than or equal to 0.1 and less than or equal to 1, the ratio of the average width W3 to the average length D3 is more than or equal to 0.15 and less than or equal to 5, and the ratio of the average height H3 to the average width W3 is more than or equal to 0.3 and less than or equal to 3. Namely, the housing 11 has the following dimensional relationship:

H3×D3×W3≥0.02m ³

0.1≤H3：D3≤1

0.15≤W3：D3≤5

0.3≤H3：W3≤3

the indoor unit of the air conditioner with the size relation is suitable for indoor installation as a central air conditioner, and can realize higher natural cold air deposition effect.

The heat exchanger 12 in this embodiment may be disposed in various ways, for example, the heat exchanger includes a plurality of first heat exchange pipes 122 disposed in parallel at intervals along a first reference plane C, where the first reference plane C is a plane formed by the first heat exchange pipes 122 and is a plane formed by central axes of the first heat exchange pipes 122. The plurality of first heat exchange pipelines 122 are all arranged through the plurality of heat exchange fins 121, and a first included angle between the first reference plane C and the first direction X is 0-30 °.

The heat exchanger 12 further includes a plurality of second heat exchange pipelines 123 arranged in parallel at intervals along a second reference plane D, the plurality of second heat exchange pipelines 123 are all arranged through the plurality of heat exchange fins 121, and a second included angle between the second reference plane D and the first direction X is 5-30 °. That is, the plurality of first heat exchange pipes 122 and the plurality of second heat exchange pipes 123 are arranged in a V shape, and the second included angle may be greater than or equal to the first included angle. The outer diameter range of the heat exchange pipeline is 2-12 mm, so that excessive resistance to cold air can be avoided while a certain heat exchange effect is realized. The V-shaped arrangement of the heat exchanger 12 is such that the heat exchanger 12 covers the area of air flow as large as possible in the first direction, improving the cold air sinking performance, the inclination is 0 to 30 °, and at the same time, condensate water is prevented from directly dripping from the heat exchanger 12 and can flow along the heat exchanger 12 to the water collection sump 13.

In this embodiment, the heat exchanging fins 121 may be an integral structure or a combined structure. As shown in fig. 2, the heat exchanger plate 121 is composed of a first heat exchanger 1211 and a second heat exchanger 1212, wherein the plurality of first heat exchanger pipes 122 are all inserted into the plurality of first heat exchanger 1211, and the plurality of second heat exchanger pipes 123 are all inserted into the plurality of second heat exchanger 1212. The first heat exchanging fin 1211 and the second heat exchanging fin 1212 abut against each other at one end near the air outlet area and are spaced from each other at the other end near the air inlet area, thereby forming a V-shape matched with the first heat exchanging pipeline 122 and the second heat exchanging pipeline 123. The first heat exchanging fin 1211 and the second heat exchanging fin 1212 have the same shape and size and are both long strips. The central axis of the first plate 1211 is located on the first reference plane C and the central axis of the second plate 1212 is located on the second reference plane D.

In order to realize heat exchange and avoid resistance to cold air, the ratio of the distance between two adjacent first heat exchange fins 1211 to the width of the first heat exchange fins 1211 is greater than or equal to 0.06 and less than or equal to 0.7. Similarly, the second plate 1212 has the same design dimensions as the first plate 1211.

Further, the ratio of the projected areas of the first plate 1211 and the second plate 1212 on the same plane along the first direction is greater than 0.85 and less than 1, and the projections of the first plate 1211 and the second plate 1212 on the same plane along the third direction are mostly coincident.

Through the arrangement of the first heat exchange plate 1211 and the second heat exchange plate 1212, the air circulation area in the first direction is covered as much as possible, the projection area in the second direction, i.e. the third direction, is reduced, i.e. the resistance of air flow is reduced, and the natural air sinking effect is enhanced.

The end, close to the air outlet area 113, of each of the first heat exchange fin 1211 and the second heat exchange fin 1212 is trimmed so as to guide condensed water to the water collecting tank, an included angle between the trimmed edge of the first heat exchange fin 1211 and the first reference plane C ranges from 5 degrees to 60 degrees, the size of the water collecting tank 13 is further reduced, the cold air blockage of the water collecting tank 13 is further reduced, the included angle is not too large, and water flow can be prevented from directly falling down in the middle of flowing through the trimmed edge.

For example, the heat exchanger may also be as shown in fig. 5, and fig. 5 is another schematic structural diagram of the heat exchanger in the embodiment of the indoor unit of the air conditioner shown in fig. 1.

The heat exchange pipe 122 is integrated in the heat exchange plate 121, the heat exchange plate 121 has a first thickness in a region where the heat exchange pipe 122 is located, the heat exchange plate 121 has a second thickness in other regions except the heat exchange pipe 122, and a ratio of the first thickness to the second thickness is greater than or equal to 1.2 and less than or equal to 2. The ratio of the second thickness to the distance between two adjacent heat exchange plates 121 is greater than or equal to 0.01 and less than or equal to 0.5. Compared with the radiator, the radiator can give consideration to air flow resistance and heat exchange performance, and the optimization of comprehensive performance is realized.

The heat exchanging pipes 122 are refrigerant flow paths, and can be formed by blowing on the heat exchanging fins 121, and according to the shape of the heat exchanging fins 121, the heat exchanging pipes 122 are also V-shaped in this embodiment, so that the temperature on the heat exchanging fins 121 is as uniform as possible. The fins 121 are less obstructive to the cooling air.

The air conditioner indoor unit can realize natural convection of refrigerating air and low-noise and low-wind-sense refrigerating air supply, and the design mode of the heat exchanger and the water collecting tank in the indoor unit is more favorable for application in a central air conditioner.

The above description is only an example of the present application, and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. An air conditioning indoor unit, characterized in that, the air conditioning indoor unit includes:

the air conditioner comprises a shell, a fan and a fan, wherein an air inlet area and an air outlet area which are opposite to each other in a first direction are formed on the shell, and the shell forms an accommodating cavity;

the heat exchangers are arranged in the accommodating cavity and used for cooling air entering from the air inlet area, and the air outlet area is used for discharging the air naturally deposited after cooling;

the heat exchanger comprises a plurality of heat exchange fins arranged at intervals along a second direction; from the air inlet area to the air outlet area, the width of the heat exchange plate in the third direction is gradually reduced; the plurality of heat exchangers are arranged in the third direction; the first direction, the second direction and the third direction are perpendicular to each other;

a plurality of water catch bowl, set up in the holding intracavity, every water catch bowl sets up in one the heat exchanger with between the air-out district, the notch orientation of water catch bowl the heat exchanger.

2. An indoor unit of an air conditioner as claimed in claim 1, wherein the heat exchanger comprises at least one first heat exchange pipeline arranged in parallel at intervals along a first reference plane, the at least one first heat exchange pipeline penetrates through the at least one heat exchange fin, and a first included angle between the first reference plane and the first direction is 0-30 °.

3. An indoor unit of an air conditioner as claimed in claim 2, wherein the heat exchanger comprises at least one second heat exchange pipeline arranged in parallel at intervals along a second reference plane, the at least one second heat exchange pipeline penetrates through the at least one heat exchange fin, a second included angle between the second reference plane and the first direction is 5-30 degrees, and the second included angle is greater than or equal to the first included angle.

4. The indoor unit of claim 3, wherein the heat exchanging fins comprise a first heat exchanging fin and a second heat exchanging fin, the at least one first heat exchanging pipeline is arranged through at least one first heat exchanging fin, the at least one second heat exchanging pipeline is arranged through at least one second heat exchanging fin, one ends of the first heat exchanging fin and the second heat exchanging fin close to the air outlet area are abutted against each other, and the other ends of the first heat exchanging fin and the second heat exchanging fin close to the air inlet area are spaced from each other.

5. The indoor unit of an air conditioner as claimed in claim 1, wherein heat exchange pipes are integrated in the heat exchange plate, the heat exchange plate has a first thickness in a region where the heat exchange pipes are located, the heat exchange plate has a second thickness in a region other than the heat exchange pipes, and a ratio of the first thickness to the second thickness is greater than or equal to 1.2 and less than or equal to 2.

6. An indoor unit of an air conditioner according to claim 5, wherein a ratio of the second thickness to a distance between two adjacent heat exchange fins is greater than or equal to 0.01 and less than or equal to 0.5.

7. An air conditioning indoor unit according to claim 1, wherein the casing has an average height in the first direction, an average length in the second direction, and an average width in the third direction, a product of the average height, the average length, and the average width is 0.02 cubic meter or more, a ratio of the average height to the average length is 0.1 or more and 1 or less, a ratio of the average width to the average length is 0.15 or more and 5 or less, and a ratio of the average height to the average width is 0.3 or more and 3 or less.

8. An indoor unit of an air conditioner according to claim 1, wherein at least one of opposite side surfaces of the water collecting groove in the third direction is inclined so that a width of the water collecting groove in the third direction is gradually reduced in a direction from the air-intake zone to the air-outlet zone.

9. An indoor unit of an air conditioner according to claim 8, wherein an angle between the inclined surface and the first direction is 5 ° to 60 °.

10. An indoor unit of an air conditioner according to claim 1, wherein the casing includes an upper side plate and a lower side plate which are arranged opposite to each other in the first direction, a ratio of an area of the air inlet area to an area of the upper side plate is 0.4 or more and less than 1, and a ratio of an area of the air outlet area to an area of the lower side plate is 0.4 or more and less than 1.