CN215909195U - Air conditioner indoor unit and air conditioner - Google Patents

Abstract

The application discloses machine and air conditioner in air conditioning, machine includes in the air conditioning: a housing; the wind wheel and the indoor heat exchanger are arranged in the shell, and the wind wheel is arranged on the air outlet side of the indoor heat exchanger; wherein the housing includes: the wind wheel wind power generation device comprises a front volute tongue and a pressure expanding plate, wherein the front volute tongue, the pressure expanding plate and the wind wheel define an exhaust duct, a swing blade capable of swinging left and right and a wind guide structure arranged on the inner side of the swing blade are arranged on the exhaust duct, and the wind guide structure divides at least part of the exhaust duct into a first air duct adjacent to the pressure expanding plate and a second air duct adjacent to the front volute tongue. According to the air conditioner indoor unit, under the working condition of reducing air quantity or when the resistance of the air inlet or the air outlet is too large, the eccentric vortex still stays near the front volute tongue, and meanwhile, the size of the eccentric vortex is not increased.

Description

Air conditioner indoor unit and air conditioner

Technical Field

The application relates to the field of household appliances, in particular to an air conditioner indoor unit and an air conditioner.

Background

Because of the principle characteristics of the cross-flow wind wheel, the relation between the performance and the eccentric vortex at the front volute tongue is extremely large when the wind wheel works, the position of the eccentric vortex is closer to the front volute tongue, the area is smaller, the flow in the wind wheel is more ideal, and the efficiency of the fan is higher.

However, because the range of the air output of the fan is large, the design mostly takes the highest working condition as the reference working condition, and the requirement of ideal eccentric vortex of the fan is met; in addition, the low-air-volume eccentric vortex does not regularly move in the wind wheel, so that the air volume is reduced, periodic surge is caused, the air outlet backflow is serious, the air outlet efficiency is low, and the like.

SUMMERY OF THE UTILITY MODEL

The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present application is to provide an indoor unit of an air conditioner, in which when the air volume is reduced or the resistance of the air inlet or the air outlet is too large, the eccentric vortex still stays near the front volute tongue, and the size of the eccentric vortex does not increase.

An air conditioning indoor unit according to the present application includes: a housing; the wind wheel and the indoor heat exchanger are arranged in the shell, and the wind wheel is arranged on the air outlet side of the indoor heat exchanger; wherein the housing includes: the wind wheel wind power generation device comprises a front volute tongue and a pressure expanding plate, wherein the front volute tongue, the pressure expanding plate and the wind wheel define an exhaust duct, a swing blade capable of swinging left and right and a wind guide structure arranged on the inner side of the swing blade are arranged on the exhaust duct, and the wind guide structure divides at least part of the exhaust duct into a first air duct adjacent to the pressure expanding plate and a second air duct adjacent to the front volute tongue.

According to the air conditioner indoor unit of the application, through set up wind-guiding structure in the exhaust duct, can separate the exhaust duct for first wind channel and second wind channel, therefore, when the wind wheel with the air current leading-in to the exhaust duct, through set up wind-guiding structure near the position of air exit in the exhaust duct, reduce the air current that is close to diffuser one side and return the possibility to the wind wheel under the pressure, thereby when the operating mode that reduces the amount of wind or the resistance of air intake or air exit is too big, the eccentric vortex still stops near preceding volute tongue, the size of eccentric vortex does not increase simultaneously, compare from this in prior art under the same operating mode increased the amount of wind, the noise is reduced, the risk such as surge, abnormal sound has been reduced.

According to one embodiment of the present application, the air guiding structure is configured as an air guiding plate, and the air guiding plate extends along the air outlet direction.

According to an embodiment of the present application, the outer diameter of the wind wheel is D, the minimum distance between the wind deflector and the outer circumferential surface of the wind wheel is δ, and δ satisfies: delta is more than or equal to 5% and less than or equal to 20% of D.

According to one embodiment of the application, an arc-shaped section bent towards the front side is arranged on the front volute tongue, an included angle between a perpendicular line from the circle center of the arc-shaped section to the pressure expansion plate and the air deflector is alpha, and the alpha satisfies the following conditions: alpha is more than or equal to 85 degrees and less than or equal to 95 degrees.

According to an embodiment of the present application, the air deflector is parallel to at least a portion of the pressure expansion plate, a distance between the air deflector and the portion of the pressure expansion plate parallel to the air deflector is H, a minimum distance between the front volute tongue and the pressure expansion plate is H, and H satisfies: 0.3H < 0.5H.

According to an embodiment of the application, the length of the wind deflector in the wind guiding direction is L, the outer diameter of the wind wheel is D, and L satisfies: l > 0.3D.

According to one embodiment of the application, the air deflector is configured as a flat plate or an arc plate.

According to one embodiment of the application, the left end and the right end of the air deflector are respectively and fixedly connected with the left side wall and the right side wall of the shell, and the swing blade is provided with a fit clearance matched with the air deflector.

According to an embodiment of the application, the wind guiding structure is constructed into a plurality of sub wind guiding structures which are sequentially arranged in the wind outlet direction or sequentially arranged in the left-right direction, and two adjacent sub wind guiding structures can move relatively.

According to the air conditioner of this application including foretell air conditioning indoor set, because the air conditioner according to this application is provided with foretell air conditioning indoor set, therefore this air conditioner is at the in-process of operation, no matter the volume of airing exhaust is big or little, the eccentric vortex of air conditioning indoor set still stops near preceding snail tongue, and the size of eccentric vortex does not increase simultaneously, has increased the amount of wind compared with in the prior art under the same operating mode from this, has reduced the noise, has reduced risks such as surge, abnormal sound.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

fig. 2 is a schematic view illustrating the flow of air in an air conditioning indoor unit according to an embodiment of the present application;

FIG. 3 is a schematic view of one orientation of the air deflection plate in cooperation with the swing blade according to an embodiment of the present application;

FIG. 4 is a schematic view of another orientation of the wind deflector in cooperation with the swing blade according to an embodiment of the present application;

fig. 5 is a schematic view of an air conditioning indoor unit according to another embodiment of the present application.

Reference numerals: the air conditioner indoor unit 100, a shell 110, a base plate 111, a face frame 112, a diffuser 111a, a front volute tongue 112a, a wind wheel 120, an indoor heat exchanger 130, a wind deflector 140, a swing blade 150, an air inlet 101, an air inlet duct 102, an air outlet 103, an air outlet duct 104, a first air duct 104a and a second air duct 104 b.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

An air conditioning indoor unit 100 according to an embodiment of the present application is described below with reference to fig. 1 to 5.

The air conditioning indoor unit 100 according to the present application includes a case 110, a wind wheel 120, and an indoor heat exchanger 130.

The casing 110 may include a base chassis 111 and a face frame 112 disposed on the base chassis 111, the wind turbine 120 and the indoor heat exchanger 130 are disposed in the casing 110, and particularly, the wind turbine 120 and the indoor heat exchanger 130 are disposed between the base chassis 111 and the face frame 112, and the base chassis 111 and the face frame 112 define a receiving space in which the wind turbine 120 and the indoor heat exchanger 130 are received.

The top of the face frame 112 can be provided with an air inlet 101, an air inlet duct 102 communicated with the air inlet 101 is defined among the face frame 112, the base plate 111 and the indoor heat exchanger 130, wherein a filter screen is arranged on the air inlet side of the indoor heat exchanger 130; the wind wheel 120 is disposed at the air outlet side of the indoor heat exchanger 130, wherein the base plate 111 is provided with a pressure expansion plate 111a, the face frame 112 is provided with a front volute tongue 112a, and the pressure expansion plate 111a, the front volute tongue 112a and the indoor heat exchanger 130 define an exhaust duct 104. Meanwhile, the face frame 112 is provided with an air outlet 103, and the air outlet 103 is communicated with the air exhaust duct 104.

Indoor air enters the air inlet duct 102 through the air inlet 101, is filtered by the filter screen, passes through the indoor heat exchanger 130 and exchanges heat with the refrigerant in the indoor heat exchanger 130, and then is discharged from the indoor air conditioner through the air outlet duct 104 and the air outlet 103 after exchanging heat.

The air outlet 103 of the air conditioner is generally provided with an air guide strip which can swing in the up-and-down direction, so that up-and-down air guide can be realized, and meanwhile, the air exhaust duct 104 is provided with a swing blade which can swing in the left-and-right direction at the inner side of the air guide strip, so that left-and-right air guide can be realized for exhausted air. From this, can realize different air-out effects.

However, in the prior art, because the range of the air output of the fan is large, the highest working condition is mostly used as the reference working condition during the design, and the requirement of the ideal eccentric vortex is met, and during the actual work, due to the change of the inlet and outlet resistance, the adjustment of the outlet air deflector 140 and other reasons, the abnormal working conditions of low air volume of the wind wheel 120 occur, and the eccentric vortex of the working conditions is too large, so that the working efficiency of the wind wheel 120 is affected; in addition, the low air volume eccentric vortex moves irregularly in the wind wheel 120, so that the air volume is reduced, periodic surge is caused, the air outlet backflow is serious, the air outlet efficiency is low, and the like.

In order to solve the above technical problem, a wind guiding structure is disposed in the exhaust duct 104 and at the same time inside the swing blade 150 (i.e. upstream of the swing blade 150 in the air outlet direction), and the wind guiding structure can divide at least a portion of the exhaust duct 104 into a first wind duct 104a and a second wind duct 104b, wherein the first wind duct 104a is adjacent to the pressure expanding plate 111a, and the second wind duct 104b is adjacent to the front volute tongue 112 a.

Therefore, as shown in fig. 2, when the wind wheel 120 guides the airflow into the exhaust duct 104, the air guide structure is arranged at a position close to the exhaust outlet 103 in the exhaust duct 104, so that the possibility that the airflow close to one side of the pressure expansion plate 111a flows back to the wind wheel 120 under the action of pressure is reduced, and therefore, when the working condition of reducing the air volume or the resistance of the air inlet 101 or the exhaust outlet 103 is too large, the eccentric vortex still stays near the front volute tongue 112a, and the size of the eccentric vortex is not increased, so that the air volume is increased under the same working condition compared with the prior art, the noise is reduced, and the risks of surge, abnormal sound and the like are reduced.

According to the air conditioner indoor unit 100 of the present application, the air exhaust duct 104 can be divided into the first air duct 104a and the second air duct 104b by providing the air guide structure in the air exhaust duct 104, so that when the wind wheel 120 guides the air flow into the air exhaust duct 104, the air guide structure is provided in the air exhaust duct 104 at a position close to the air outlet 103, thereby reducing the possibility that the air flow close to the side of the pressure expansion plate 111a flows back to the wind wheel 120 under the pressure effect, so that the eccentric vortex still stays near the front volute tongue 112a under the working condition of reducing the air volume or when the resistance of the air inlet 101 or the air outlet 103 is too large, and the size of the eccentric vortex is not increased, thereby increasing the air volume under the same working condition, reducing the noise, and reducing the risks of surge, abnormal sound and the like in comparison with the prior art.

In some embodiments of the present application, as shown in fig. 1 to 4, the wind guiding structure may be configured as a wind guiding plate 140, and the wind guiding plate 140 may extend in the left-right direction and in the wind outlet direction. Thereby, the air flow in the exhaust duct 104 can be divided into two parts, wherein the possibility that the air flow close to the pressure expansion plate 111a flows back to the wind wheel 120 under pressure is reduced, the eccentric vortex still stays near the front volute tongue 112a, and the size of the eccentric vortex is not increased.

Further, the air guiding plate 140 may be a flat plate or an arc-shaped plate, and when the air guiding plate 140 is configured as an arc-shaped plate, the bending direction of the air guiding plate 140 may be the same as the bending direction of the front volute tongue 112a or the pressure expanding plate 111 a. In the embodiment of the present application, the front volute tongue 112a and the pressure-expanding plate 111a are both bent toward the front side, so the air deflector 140 is also bent toward the front side, thereby the exhaust duct 104 can be more uniformly divided into two parts.

In some embodiments of the present application, as shown in fig. 1, the outer diameter of the rotor 120 may be D, and the minimum distance between the outer circumferential surface of the rotor 120 and the wind deflector 140 may be δ, while δ satisfies: delta is more than or equal to 5% and less than or equal to 20% of D. Through a plurality of tests and researches, the inventor of the application finds that delta is too small, abnormal sound is generated, delta is too large, and the air guide effect is not good, and only when delta is not less than 5% D and not more than 20% D, the air conditioner indoor unit 100 can ensure that the abnormal sound decibel is low during operation, and simultaneously, the air guide effect of the air guide plate 140 is ensured, so that the eccentric vortex is still kept near the front volute tongue 112a, and the size of the eccentric vortex is not increased.

In some embodiments of the present application, since the front volute tongue 112a is bent toward the front side, an arc-shaped section bent toward the front side is naturally disposed on the front volute tongue 112a, the arc-shaped section has a circular shape, and an included angle between a perpendicular line between the circular shape and the diffuser plate 111a and the wind deflector 140 may be α, where α satisfies: alpha is more than or equal to 85 degrees and less than or equal to 95 degrees.

Accordingly, the air guide plate 140 and the diffuser 111a can be kept substantially parallel to each other, or the air guide plate 140 and a part of the diffuser 111a can be substantially parallel to each other, and when the air guide plate 140 is a flat plate, the air guide plate 140 and the part of the diffuser 111a that is flat plate can be substantially parallel to each other, and when the air guide plate 140 is an arc-shaped plate, the air guide plate 140 and the part of the diffuser 111a that is arc-shaped can be substantially parallel to each other.

According to an embodiment of the present application, at least a portion of the pressure expansion plate 111a is parallel to the wind deflector 140, a distance between a portion of the pressure expansion plate 111a parallel to the wind deflector 140 and the wind deflector 140 is H, and a minimum distance between the pressure expansion plate 111a and the front volute tongue 112a is H, then H satisfies: 0.3H < 0.5H.

The wind guiding effect is not good when the value of h is too large or too small. Setting the value range of h in the above range can effectively ensure the air guiding effect, ensure that the eccentric vortex still stays near the front volute tongue 112a, and simultaneously, the size of the eccentric vortex is not increased.

In some embodiments of the present application, the dimension of the wind deflector 140 in the wind guiding direction is L, and the outer diameter of the wind wheel 120 is D, then L satisfies: l > 0.3D. The inventor of the present application finds that when the air deflector 140 is too short, the air flow easily bypasses the air deflector 140, the original flow guiding effect cannot be achieved, and most of the air flow close to the pressure expansion plate 111a still flows back into the wind wheel 120, so that the eccentric vortex is far away from the front volute tongue 112a, and the eccentric vortex is increased.

According to an embodiment of the present application, the left and right ends of the wind deflector 140 are respectively and fixedly connected to the left and right sidewalls of the housing 110, and the blade is provided with a gap matched with the wind deflector 140, the gap can avoid the wind deflector 140, so as to prevent the swing blade 150 from interfering with the wind deflector 140 during the swinging process, and ensure that the swing blade 150 can smoothly guide wind left and right.

In some embodiments of the present application, the air guiding structure includes a plurality of sub air guiding structures, and the plurality of air guiding structures may be arranged in sequence in the air outlet direction, or the plurality of air guiding structures may be arranged in sequence in the left-right direction, and simultaneously, two adjacent sub air guiding structures may move relatively.

For example, the wind guiding structure may be configured as a wind guiding plate 140, the wind guiding plate 140 may include a plurality of sub-wind guiding plates, the plurality of sub-wind guiding plates may be sequentially arranged in the wind outlet direction, and at the same time, two adjacent sub-wind guiding plates may relatively swing in the front-back direction or the up-down direction; the plurality of sub-air deflectors can be sequentially arranged in the left-right direction, and two adjacent sub-air deflectors can relatively swing in the front-back direction, the left-right direction or the up-down direction.

Therefore, the air guide structure can realize various different working conditions, and the air guide effect can be more complex by adjusting the movement of the plurality of sub air guide structures, so that the operation mode of the indoor unit 100 of the air conditioner is improved.

Of course, it can be understood that the wind guide structure can be constructed as an integral molding piece, so that the whole construction of the wind guide structure can be simplified, and the wind guide structure is simpler to manufacture and produce.

In another embodiment of the present application, as shown in fig. 5, the air guiding structure is similar to the front volute tongue 112a, and the air guiding structure includes two intersecting air guiding plate portions, the intersecting position of the two air guiding plate portions is configured to be a circular arc structure, one of the two air guiding plate portions and the front volute tongue 112a define the second air duct 104b, and the other air guiding plate portion and the diffuser plate 111a define the first air duct 104 a.

An embodiment of the air conditioning indoor unit of the present application is described in detail below.

The air conditioner indoor unit comprises a shell 110, a wind wheel 120 and an indoor heat exchanger 130, wherein the shell 110 comprises a base plate 111 and a face frame 112 arranged on the base plate 111, the top of the face frame 112 can be provided with an air inlet 101, an air inlet duct 102 communicated with the air inlet 101 is defined among the face frame 112, the base plate 111 and the indoor heat exchanger 130, and a filter screen is arranged on the air inlet side of the indoor heat exchanger 130; the wind wheel 120 is disposed at the air outlet side of the indoor heat exchanger 130, wherein the base plate 111 is provided with a pressure expansion plate 111a, the face frame 112 is provided with a front volute tongue 112a, and the pressure expansion plate 111a, the front volute tongue 112a and the indoor heat exchanger 130 define an exhaust duct 104. Meanwhile, the face frame 112 is provided with an air outlet 103, and the air outlet 103 is communicated with the air exhaust duct 104.

The air outlet 103 of the air conditioner is generally provided with an air guide strip which can swing in the up-and-down direction, so that the up-and-down air guide can be realized, meanwhile, the air exhaust duct 104 is provided with a swing blade 150 at the inner side of the air guide strip, and the swing blade 150 can swing in the left-and-right direction, so that the left-and-right direction air guide can be realized for the exhausted air. From this, can realize different air-out effects.

In the air conditioning indoor unit 100 of the present application, a wind guide structure is disposed in the exhaust duct 104 and at the same time inside the swing blade 150 (i.e., upstream of the swing blade 150 in the air outlet direction), and the wind guide structure can divide at least a portion of the exhaust duct 104 into a first wind duct 104a and a second wind duct 104b, where the first wind duct 104a is adjacent to the pressure expansion plate 111a, and the second wind duct 104b is adjacent to the front volute tongue 112 a.

Therefore, when the wind wheel 120 guides the airflow into the exhaust duct 104, the air guide structure is arranged at the position close to the exhaust outlet 103 in the exhaust duct 104, so that the possibility that the airflow close to one side of the pressure expansion plate 111a flows back to the wind wheel 120 under the action of pressure is reduced, and therefore, under the working condition of reducing the air volume or the over-large resistance of the air inlet 101 or the exhaust outlet 103, the eccentric vortex still stays near the front volute tongue 112a, and meanwhile, the size of the eccentric vortex is not increased, so that the air volume is increased under the same working condition compared with the prior art, the noise is reduced, and the risks of surge, abnormal sound and the like are reduced.

The wind guide structure may be configured as a wind guide plate 140, and the wind guide plate 140 may extend in the left-right direction and in the wind outlet direction. Thereby, the air flow in the exhaust duct 104 can be divided into two parts, wherein the possibility that the air flow close to the pressure expansion plate 111a flows back to the wind wheel 120 under pressure is reduced, the eccentric vortex still stays near the front volute tongue 112a, and the size of the eccentric vortex is not increased. The air deflector 140 may be a flat plate or an arc-shaped plate, and when the air deflector 140 is configured as an arc-shaped plate, the bending direction of the air deflector 140 may be the same as the bending direction of the front volute tongue 112a or the pressure expansion plate 111 a. In the embodiment of the present application, the front volute tongue 112a and the pressure-expanding plate 111a are both bent toward the front side, so the air deflector 140 is also bent toward the front side, thereby the exhaust duct 104 can be more uniformly divided into two parts.

The air conditioner of the embodiment of the present application is briefly described below.

The air conditioner according to the embodiment of the present application includes the above-mentioned air conditioner indoor unit 100, and since the air conditioner according to the embodiment of the present application is provided with the above-mentioned air conditioner indoor unit 100, during the operation of the air conditioner, no matter whether the air discharge amount is large or small, the eccentric vortex of the air conditioner indoor unit 100 still stays near the front volute tongue 112a, and meanwhile, the size of the eccentric vortex is not increased, thereby increasing the air volume, reducing the noise, and reducing the risks of surge, abnormal sound and the like compared with the prior art under the same working condition.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

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

a housing;

the wind wheel and the indoor heat exchanger are arranged in the shell, and the wind wheel is arranged on the air outlet side of the indoor heat exchanger; wherein

The housing includes: the wind wheel wind power generation device comprises a front volute tongue and a pressure expanding plate, wherein the front volute tongue, the pressure expanding plate and the wind wheel define an exhaust duct, a swing blade capable of swinging left and right and a wind guide structure arranged on the inner side of the swing blade are arranged on the exhaust duct, and the wind guide structure divides at least part of the exhaust duct into a first air duct adjacent to the pressure expanding plate and a second air duct adjacent to the front volute tongue.

2. An indoor unit of an air conditioner according to claim 1, wherein the air guide structure is configured as an air guide plate extending in an air outlet direction.

3. An indoor unit of an air conditioner according to claim 2, wherein the outer diameter of the wind wheel is D, the minimum distance between the air deflector and the outer peripheral surface of the wind wheel is δ, and δ satisfies: delta is more than or equal to 5% and less than or equal to 20% of D.

4. An indoor unit of an air conditioner as claimed in claim 2, wherein the front volute tongue is provided with an arc-shaped section bent towards the front side, an included angle between a perpendicular line from the center of the arc-shaped section to the pressure expansion plate and the air deflector is α, and α satisfies: alpha is more than or equal to 85 degrees and less than or equal to 95 degrees.

5. An indoor unit of an air conditioner as claimed in claim 2, wherein the air deflector is parallel to at least part of the pressure expansion plate, the distance between the air deflector and the part of the pressure expansion plate parallel to the air deflector is H, the minimum distance between the front volute tongue and the pressure expansion plate is H, and H satisfies: 0.3H < 0.5H.

6. An indoor unit of an air conditioner according to claim 2, wherein the length of the air deflector in the air guiding direction is L, the outer diameter of the wind wheel is D, and L satisfies: l > 0.3D.

7. An indoor unit of an air conditioner according to claim 2, wherein the air guide plate is configured as a flat plate or an arc-shaped plate.

8. An indoor unit of an air conditioner according to claim 2, wherein left and right ends of the air guide plate are fixedly connected to left and right side walls of the casing, respectively, and the swing vane is provided with a fitting gap fitted to the air guide plate.

9. An indoor unit of an air conditioner according to claim 1, wherein the air guide structure is configured as a plurality of sub air guide structures arranged in sequence in an air outlet direction or in sequence in a left-right direction, and adjacent two of the sub air guide structures are relatively movable.

10. An air conditioner characterized by comprising the indoor unit of an air conditioner according to any one of claims 1 to 9.

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