CN217031578U

CN217031578U - Air conditioner indoor unit

Info

Publication number: CN217031578U
Application number: CN202220293934.9U
Authority: CN
Inventors: 杨锦文; 杨伟奇; 曾帅; 曾梦伟; 李阳轩
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-07-22
Anticipated expiration: 2032-02-14

Abstract

The utility model provides an air-conditioning indoor unit, comprising: the motor mounting structure comprises a bottom shell, a motor mounting seat and a motor mounting seat, wherein a mounting groove is formed in the bottom shell; the heat exchanger is arranged on the bottom shell, and a mounting cavity is enclosed by the heat exchanger and the mounting groove; the cross-flow fan blade is rotatably arranged in the mounting cavity; the motor is arranged on the motor mounting seat and is in driving connection with the cross-flow fan blade; the motor cover covers the motor mounting seat, the motor cover comprises a blocking plate, and the blocking plate is in sealing contact with the bottom shell and the first end of the heat exchanger and used for blocking the first end of the mounting cavity. The motor cover plate is arranged to enable the airflow path to form a relatively closed space, airflow disturbance at the position can be reduced, smoothness of airflow is guaranteed, the rotation of the through-flow fan blade extending into the space is less affected, the air volume of the indoor unit can be improved, and airflow noise can be reduced.

Description

Air conditioner indoor unit

Technical Field

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

Background

The noise of the air conditioner indoor unit is a very sensitive problem for users, and the complaint rate of products is greatly increased due to the overhigh noise level, so that the competitiveness and public praise accumulation of the products are very unfavorable. The air conditioner indoor unit adopts the cross-flow fan blade to realize air supply, and the pneumatic noise generated by the cross-flow fan blade in the rotation process is the most main noise source of the indoor unit, including rotation noise and vortex noise. The vortex noise is also called broadband noise, and is noise waves generated by the fact that the blades push air in the surrounding space to form vortices, and the vortices are split into a plurality of large and small vortices on the surface of the blades and the wall surface of the volute. The rotational noise, also called discrete noise, is generated by the air pressure pulsation caused by the impact of the operating blades against the surrounding gaseous medium.

The rotary noise is particularly obvious in high wind gear, and shows a peak on a frequency spectrum, and human ears are sensitive to the noise, which is a main problem of the noise of the indoor unit. Therefore, there is a need for an improved structure of an indoor unit of an air conditioner, which reduces rotational noise and improves user comfort.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides an indoor unit of an air conditioner, which is at least used for solving the technical problem of large noise of outlet air in the prior art, and specifically:

the utility model provides an air conditioner indoor unit, comprising:

the motor mounting structure comprises a bottom shell, a motor mounting seat and a motor mounting seat, wherein a mounting groove is formed in the bottom shell;

the heat exchanger is arranged on the bottom shell, and a mounting cavity is enclosed by the heat exchanger and the mounting groove;

the cross-flow fan blade is rotatably arranged in the mounting cavity;

the motor is arranged on the motor mounting seat and is in driving connection with the cross-flow fan blade;

the motor cover covers the motor mounting seat, and comprises a blocking plate, wherein the blocking plate is in sealing contact with the bottom shell and the first end of the heat exchanger and used for blocking the first end of the mounting cavity.

Further optionally, the motor cover is provided with a first clamping structure clamped with the bottom shell and a second clamping structure clamped with the heat exchanger.

Further optionally, the edge of the containment plate comprises:

the radius of the circumference where the first end part arc section is located is Rh;

the straight line section is tangent to the circumference of the first end circular arc section;

the first end circular arc section is connected with the first end of the straight line section through a plurality of connecting circular arc sections, and the radius of the circumference where the connecting circular arc sections are located is larger than Rh;

the second end of the straight line section is connected with a second end circular arc section, and the radius of the circumference where the second end circular arc section is located is larger than Rh.

Further optionally, the motor cover further comprises a cover plate, the cover plate is arranged on one side of the blocking plate, and the cover plate is an arc-shaped plate and used for shielding the upper side of the motor.

Further optionally, a stop block is arranged at a position, close to the motor mounting seat, in the mounting groove of the bottom case, and the stop block is used for disturbing air flow.

Further optionally, the dog is the massive structure that windward side thickness is less than leeward side thickness, wherein, the bottom surface of dog with the drain pan laminating sets up, the top surface of dog includes indent cambered surface and plane.

Further optionally, the stopper has a front end height h1 of 5mm, a rear end height h2 of 25mm, a width b1 of 40mm, a top plane length l1 of 10mm, and a bottom curved surface chord length l2 of 50 mm; and/or the presence of a gas in the gas,

the distance between the stop block and the air outlet of the bottom shell is as follows: ld 50 mm.

Further optionally, the air conditioner includes an air deflector, a protrusion is disposed on the air deflector, and the protrusion is located at one end far away from the motor.

Further optionally, the protrusion is a trapezoidal block, the height h is 15mm, the width bu of the top is 5mm, the width bb of the bottom is 13mm, and the length l2 is 36 mm; and/or the presence of a gas in the gas,

the distance le between the lug and the end face of the air deflector is equal to [0,40] mm, and the distance lq between the lug and the front end of the air deflector is equal to [5,25] mm.

Further optionally, the air deflectors include a main air deflector and an auxiliary air deflector, and the protrusion is disposed on the main air deflector.

The motor cover plate is arranged to enable the airflow path to form a relatively closed space, airflow disturbance at the position can be reduced, smoothness of airflow is guaranteed, the rotation of the through-flow fan blade extending into the space is less affected, the air volume of the indoor unit can be improved, and airflow noise can be reduced.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.

FIG. 1 is an exploded view of an indoor unit of an air conditioner according to an embodiment of the present invention;

FIG. 2 is a schematic view showing the assembly of the structure of part of the indoor unit of the air conditioner according to the embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating a first state of a motor cover according to an embodiment of the present invention;

FIG. 4 is a second structural diagram of a motor cover according to an embodiment of the present invention;

FIG. 5 shows a schematic structural view of a containment cap in accordance with an embodiment of the present invention;

fig. 6 shows a schematic view of an indoor unit of an air conditioner according to an embodiment of the present invention (no air deflector is provided);

FIG. 7 is a schematic view of a stopper according to an embodiment of the present invention;

fig. 8 is a schematic structural view of an air conditioning indoor unit according to an embodiment of the present invention (with an air guide plate).

In the figure:

1. a bottom case; 101. mounting grooves; 102. a motor mounting seat; 103. a card slot; 2. a heat exchanger; 201. clamping holes; 3. a motor cover; 301. a hook; 302. buckling; 303. a plugging plate; 304. a cover plate; 4. a motor; 5. a cross-flow fan blade; 6. a stopper; 7. a main air deflector; 8. a secondary air deflector; 9. a bump; 10. a wind sweeping blade.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the examples of the utility model and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "the plural" typically includes at least two, but does not exclude the presence of at least one.

It should be understood that the term "and/or" as used herein is merely a relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.

The motor cover plate is arranged to enable the airflow path to form a relatively closed space, airflow disturbance at the position can be reduced, smoothness of airflow is guaranteed, the rotation of the through-flow fan blade extending into the space is less affected, the air volume of the indoor unit can be improved, and airflow noise can be reduced. Meanwhile, the stop blocks and the convex blocks are additionally arranged on the right side of the bottom shell and the left side of the air deflector, so that the rotary noise is effectively reduced under the high-rotation-speed working condition of the indoor unit, the air volume is increased, and the energy efficiency level is improved. The utility model is described in detail below with reference to specific examples:

as shown in fig. 1 and 2, the present invention provides an indoor unit of an air conditioner, including:

the motor installation structure comprises a bottom shell 1, wherein an installation groove 101 is formed in the bottom shell 1, and a motor installation seat 102 is formed at a first end of the installation groove 101;

the heat exchanger 2 is arranged on the bottom shell 1, and the heat exchanger 2 and the mounting groove 101 enclose a mounting cavity;

the cross-flow fan blade 5 is rotatably arranged in the mounting cavity;

the motor 4 is arranged on the motor mounting seat 102 and is in driving connection with the cross-flow fan blade 5;

the motor cover 3 covers the motor mounting base 102, the motor cover 3 comprises a blocking plate 303, and the blocking plate 303 is in sealing contact with the first ends of the bottom shell 1 and the heat exchanger 2 and is used for blocking the first end of the mounting cavity.

As shown in fig. 3 and 4, preferably, the motor cover 3 is a cover-shaped structure and includes a blocking plate 303 and a cover plate 304, the cover plate 304 is disposed on one side of the blocking plate 303, the cover plate 304 is an arc-shaped plate, the blocking plate 303 and the cover plate 304 enclose a space for accommodating the motor 4, and the motor 4 is covered inside. The end closure of the left end of the motor cover 3 is matched with the bottom shell 1 to form a closed space, an output shaft of the motor 4 drives the cross-flow fan blade 5 to rotate, and the rightmost end of the cross-flow fan blade 5 extends into the space formed by the motor cover 3 and the bottom shell 1. The blocking plate 303 is in smooth transition on the basis of the semi-circular arc line of the bottom shell 1, and the closed space formed by the bottom shell 1 is larger, so that the air flow disturbance at the position can be reduced, and the smooth air flow is ensured. The rotation of the cross-flow fan 5 extending into the space is less affected, and the air volume of the indoor unit can be improved.

Preferably, the edge of the blocking plate 303 comprises: a first end circular arc segment, the radius of the circumference where the first end circular arc segment is located being Rh; the straight line section is tangent to the circumference of the first end circular arc section; the first end part circular arc section is connected with the first end of the straight line section through a plurality of connecting circular arc sections, and the radius of the circumference where the connecting circular arc sections are located is larger than Rh; the second end of the straight line section is connected with a second end part circular arc section, and the radius of the circumference where the second end part circular arc section is located is larger than Rh. In the present embodiment, as shown in fig. 5, the blocking plate 303 is composed of 5 curved surfaces hu1-hu5 and 1 flat surface Lh. Rh is the diameter of the semicircular arc line matched with the bottom shell 1 and the motor cover 3, and the curved surface hu5 is taken from a part of Rh. Under the influence of the evaporator, the points Lh can only be connected in a plane, and the plane Lh is tangent to Rh. The hu5 and the Lh are transited by curved surfaces hu3 and hu4, and the radian reaches the maximum value while the smooth transition is ensured; similarly, the left end of Lh is transited by the curved surfaces hu1 and hu2, and the radian reaches the maximum value under the limitation of the structure of the bottom case 1.

The motor cover 3 is provided with a first clamping structure clamped with the bottom shell 1 and a second clamping structure clamped with the heat exchanger 2. Specifically, the motor cover 3 is provided with a hook 301 formed in a direction away from the evaporator, the hook 301 forms a first clamping structure, and the evaporator is provided with a clamping hole 201 formed by a sheet metal part and matched with the hook 301. The clamping hook 301 is arranged independently, the left side and the right side are not provided with connecting structures, the clamping hook 301 can deform when being clamped into the clamping hole 201, and the clamping hook 301 is conveniently clamped into the clamping hole 201. The upper end surface of the hook 301 is provided with a reinforcing groove, so that the structural strength of the hook 301 is improved, and the hook 301 is prevented from being broken. The front end of the motor cover 3 is provided with a buckle 302, the buckle 302 forms a second clamping structure, the buckle 302 and a clamping groove 103 on the bottom case 1 are matched to be clamped, the motor cover 3 is fixed on the bottom case 1 in the mode, and then the motor cover 3 is fixed through three screws, so that the motor cover 3 is convenient to install.

The rightmost end of the indoor unit is influenced by air inlet, the motor cover 3 and a sealing metal plate on the right side of the evaporator, the flow of the indoor unit is complex, and the flow is small relative to the middle. As shown in fig. 6, a stopper 6 is arranged at a position close to the motor mounting seat 102 in the mounting groove 101 of the bottom case 1, the stopper 6 is used for disturbing the flow of the outlet airflow, and the stopper 6 is added at the right end, so that the flow state of the air outlet at the right end is disturbed, the flow vortex at the right end is reduced, and noise reduction is facilitated. Preferably, the stopper 6 is a block structure with windward side thickness smaller than leeward side thickness, wherein the bottom surface of the stopper 6 is attached to the bottom case 1, and the top surface of the stopper 6 comprises an inward concave arc surface and a plane. As shown in fig. 7, in the present embodiment, the height h1 of the front end of the stopper 6 is 5mm, the height h2 of the rear end is 25mm, the width b1 is 40mm, the length l1 of the top plane is 10mm, and the chord length l2 of the bottom curved surface is 50 mm. And, the distance that dog 6 apart from the air outlet of drain pan 1 is: ld 50 mm.

The air conditioner comprises an air deflector, as shown in fig. 8, a convex block 9 is arranged on the air deflector, and the convex block 9 is positioned at one end far away from the motor 4. In the implementation, the air conditioner comprises a main air deflector 7 and an auxiliary air deflector 8, wherein the main air deflector 7 is larger than the auxiliary air deflector 8, the two air deflectors are independently controlled and can be asynchronously controlled, and the requirements of the air conditioner on different air guiding angles during refrigeration and heating are met. The main air deflector 7 is positioned at the upper side, the auxiliary air deflector 8 is positioned at the lower side, and the two air deflectors are arranged in parallel. The whole angle is leaned on, and the cold wind that blows out like this is guided to blow the high altitude, because cold air density is greater than room air density, can slowly sink down, avoids the uncomfortable sense of cold wind straight blow, and the air outlet is separated into a plurality of different air outlets by sweeping wind blade 10 simultaneously, and scattered wind channel can give other people and not feel, improves the travelling comfort. The left side of the main air deflector 7 is provided with a trapezoidal protrusion, the bump 9 is a trapezoidal block, the height h is 15mm, the top width bu is 5mm, the bottom width bb is 13mm, the length l3 is 36mm, the distance le of the bump 9 from the end face of the air deflector belongs to [0,40] mm, and the distance lq from the front end of the air deflector belongs to [5,25] mm.

The noise reduction effect of the air conditioner indoor unit is as follows:

TABLE 1 noise test data

As can be seen from the table 1, the scheme of adding the baffle 6 to the motor cover 3 reduces the noise peak value by about 3dB (A) and the total noise value by about 0.4dB (A); the scheme of adding the stop block 6 and the air deflector bulge on the motor cover 3 has larger influence on the rotating noise peak value, and the rotating noise peak value is reduced by about 10dB (A) at 1500 rpm. It can be seen that the inventive solution facilitates the optimization of rotational noise.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the disclosure is not limited to the precise construction, arrangements, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

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

the heat exchanger is arranged on the bottom shell, and an installation cavity is defined by the heat exchanger and the installation groove;

the cross-flow fan blade is rotatably arranged in the mounting cavity;

the motor cover covers the motor mounting seat, the motor cover comprises a blocking plate, and the blocking plate is in sealing contact with the bottom shell and the first end of the heat exchanger and used for blocking the first end of the mounting cavity.

2. An indoor unit of an air conditioner as claimed in claim 1, wherein the motor cover is provided with a first clamping structure for clamping with the bottom casing and a second clamping structure for clamping with the heat exchanger.

3. An indoor unit of an air conditioner according to claim 2, wherein the edge of the blocking plate includes:

a straight line segment tangent to a circumference where the first end circular arc segment is located;

the first end part circular arc section is connected with the first end of the straight line section through a plurality of connecting circular arc sections, and the radius of the circumference where the connecting circular arc sections are located is larger than Rh;

4. An indoor unit of an air conditioner according to claim 3, wherein the motor cover further includes a cover plate provided on one side of the blocking plate, the cover plate being an arc-shaped plate for covering an upper side of the motor.

5. An indoor unit of an air conditioner as claimed in any one of claims 1 to 4, wherein a stopper is provided in the mounting groove of the bottom casing at a position close to the motor mounting seat, and the stopper is used for disturbing an outlet airflow.

6. An indoor unit of an air conditioner as claimed in claim 5, wherein the stopper is a block structure having a windward side thickness smaller than a leeward side thickness, wherein a bottom surface of the stopper is attached to the bottom casing, and a top surface of the stopper includes a concave arc surface and a flat surface.

7. An air conditioning indoor unit according to claim 6, wherein the stopper has a front end height h 1-5 mm, a rear end height h 2-25 mm, a width b 1-40 mm, a top plane length l 1-10 mm, and a bottom curved surface chord length l 2-50 mm; and/or the presence of a gas in the atmosphere,

8. An indoor unit of an air conditioner as claimed in claim 5, wherein the air conditioner includes a baffle plate, and a protrusion is provided on the baffle plate and located at an end away from the motor.

9. The indoor unit of claim 8, wherein the protrusion is a trapezoidal block, the height h is 15mm, the width bu of the top is 5mm, the width bb of the bottom is 13mm, and the length l2 is 36 mm; and/or the presence of a gas in the atmosphere,

the distance le from the lug to the end face of the air deflector belongs to [0,40] mm, and the distance lq from the lug to the front end of the air deflector belongs to [5,25] mm.

10. The indoor unit of claim 9, wherein the air guide plate comprises a main air guide plate and an auxiliary air guide plate, and the protrusion is disposed on the main air guide plate.