CN213300258U

CN213300258U - Indoor unit of air conditioner

Info

Publication number: CN213300258U
Application number: CN202022432089.2U
Authority: CN
Inventors: 王炳祺
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-05-28
Anticipated expiration: 2030-10-27

Abstract

The utility model provides an indoor unit of air conditioner, include: a housing; the rear end of the guide ring is bent outwards along the radial direction of the guide ring and then bent backwards along the axis direction of the guide ring to form an L-shaped bent part positioned at the rear end of the guide ring, the guide ring is connected with the guide cover through the L-shaped bent part, and the diameter of the guide cover is larger than that of the guide ring; the impeller is rotatably arranged in the air duct, the outer ring of the impeller is provided with a rotating ring, the rear end of the rotating ring is provided with a flanging which circumferentially surrounds the rotating ring, the diameter of the flanging is larger than that of the rotating ring, the flanging is perpendicular to the rotating ring, and the part of the flanging is positioned in the L-shaped bent part, so that an L-shaped gap is formed between the flanging and the L-shaped bent part; and the motor is used for driving the impeller to rotate. The technical effects of the utility model: an L-shaped gap is formed between the flanging and the L-shaped bent part, so that the condition of air leakage during rotation of the impeller is reduced.

Description

Indoor unit of air conditioner

Technical Field

The utility model belongs to the technical field of the air conditioner, especially, relate to an indoor unit of air conditioner.

Background

At present, the conventional air conditioner adopts more impeller rotating rings with I-shaped sections, as shown in figure 1, only the impeller is improved, and a guide ring matched with the impeller is not correspondingly improved, the weakening effect of the structure on the leakage of the blade top is very limited, because the impeller rotates in a guide cover, a radial gap L must be reserved between the blade top end and the guide cover, the pressure of the concave surface of the blade is greater than that of the convex surface of the blade in the conveying process of airflow, airflow at the blade top end flows from the high-pressure area of an outlet to the low-pressure area of an inlet, backflow opposite to the conveying direction of the airflow is generated, and the existence of the radial gap reduces the efficiency, the pressure and the air quantity of the axial flow fan, the noise is also deteriorated to a certain extent, and the larger the radial gap is, and the influence on the performance becomes more serious.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides an indoor set of air conditioning, main objective provide one kind reduce the indoor set of air conditioning of the air conditioner air volume leakage condition.

In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:

the utility model discloses an air conditioner in embodiment includes: a casing provided with an air outlet; the guide ring and the guide cover are arranged at the air outlet, the guide ring is provided with an air duct which is communicated with the front and the back, the rear end of the guide ring is bent outwards along the radial direction of the guide ring and then bent backwards along the axis direction of the guide ring to form an L-shaped bent part positioned at the rear end of the guide ring, the guide ring is connected with the guide cover through the L-shaped bent part, and the diameter of the guide cover is larger than that of the guide ring; the impeller is rotatably arranged in the air duct, the outer ring of the impeller is provided with a rotating ring, the rear end of the rotating ring is provided with a flanging which circumferentially surrounds the rotating ring, the diameter of the flanging is larger than that of the rotating ring, the flanging is perpendicular to the rotating ring, and the part of the flanging is positioned in the L-shaped bent part, so that an L-shaped gap is formed between the flanging and the L-shaped bent part; the motor sets up on the water conservancy diversion circle, and the output shaft and the impeller fixed connection of motor for the drive impeller rotates, and the turn-ups plays the effect of blockking to the air current, forms L type clearance with the cooperation of water conservancy diversion circle simultaneously, and the forced air current carries out twice right angle diversion, greatly reduced the flow velocity of leaking gas, has weakened the intensity of leaking the air current.

In the embodiment of the utility model, the diameter of rotatory ring is D1, and the diameter of turn-ups is D2, and D1 satisfies with D2: d2 is more than or equal to 105 percent of D1.

The utility model discloses an in the embodiment, have axial clearance B between turn-ups and the L type kink, B satisfies: b is less than or equal to 2 percent of D1.

The utility model discloses an in the embodiment, have radial clearance L1 between turn-ups and the L type kink, L satisfies: l1 is less than or equal to 2 percent, D1.

In an embodiment of the present invention, the radial gap L2 between the rotating ring and the deflector ring, and the radial gap L2 is equal to the radial gap L1.

In the embodiment of the present invention, the joint of the air guide sleeve and the bending part is an arc transition.

The utility model discloses an in the embodiment, the water conservancy diversion circle is provided with the water conservancy diversion grid in the export in wind channel.

In the embodiment of the present invention, a plurality of blades are circumferentially disposed on the impeller at intervals, and the top ends of the plurality of blades are all fixedly connected to the rotating ring.

The utility model discloses an in the embodiment, use the axis of water conservancy diversion circle as fore-and-aft direction, turn-ups's rear end is located the rear end the place ahead of L type kink.

Drawings

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

FIG. 1 is a schematic view of an I-shaped gap between an impeller and a guide ring in the prior art;

fig. 2 is a schematic view of a flow guiding ring and a fan according to an embodiment of the present invention;

fig. 3 is a sectional view of the deflector ring according to the embodiment of the present invention after being assembled with the fan;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a schematic view of the air flow through the L-shaped gap in an embodiment of the present invention;

in the above figures: 1. a flow guide ring; 101. a pod; 102. an air guide grid; 103. an L-shaped bent portion; 2. an impeller; 201. a blade; 3. a rotating ring; 301. flanging; 4. an electric motor.

Detailed Description

The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model provides an indoor unit of air conditioner, refer to fig. 2-5, indoor unit of air conditioner in this embodiment includes the casing, be provided with the air outlet to indoor air supply on the casing, set up water conservancy diversion circle 1 so that better to indoor air supply in air outlet department, water conservancy diversion circle 1 is the tubular structure, the wind channel that runs through around its inside has, the wind channel entry is located the rear end of water conservancy diversion circle 1, the wind channel export is located the front end of water conservancy diversion circle 1, water conservancy diversion circle 1 uses the axis direction of water conservancy diversion circle 1 as the fore-and-aft direction, the wind channel exit of water conservancy diversion circle 1 has set up water conservancy diversion grid 102, water conservancy diversion grid 102 can separate the air current that flows from the wind channel export, so that each position of even.

The center of the flow guide grid 102 is provided with a motor 4, an impeller 2 is arranged in an air duct of the flow guide ring 1, the impeller 2 is fixedly connected with an output shaft of the motor 4, when the motor 4 rotates, the impeller 2 can be driven to rotate, the impeller 2 can drive air to flow in from an air duct inlet, the air duct flows through the air duct and flows out from an air duct outlet to supply air indoors, a flow guide cover 101 is arranged at the air duct inlet of the flow guide ring 1, and the diameter of the flow guide cover 101 is larger than that of the flow guide ring 1 so that the air flow can flow into the.

The indoor unit of an air conditioner according to an embodiment of the present invention is further described below.

Because the diameter of the guide sleeve 101 is greater than that of the guide ring 1, the rear end of the guide ring 1 is bent outwards in the radial direction of the guide ring 1, and then bent backwards again in the axial direction of the guide ring 1 to form an L-shaped bent part 103 located at the rear end of the guide ring 1, and the guide ring 1 is connected with the guide ring 2 through the L-shaped bent part 103.

Under the drive of the motor 4, the impeller 2 drives the air flow to flow through rotation, the outer ring of the impeller 2 is provided with the rotating ring 3, seven blades 201 are arranged on the impeller 2 at intervals in the circumferential direction, the top ends of the seven blades 201 are fixedly connected with the rotating ring 3, the structural strength of the impeller 2 during rotation is guaranteed, as the impeller 2 needs to rotate, a radial gap is formed between the rotating ring 3 of the impeller 2 and the flow guide ring 1, and in the flowing process of the air flow, the pressure of the concave surfaces of the blades 201 is greater than the pressure of the convex surfaces, so that the air flow can flow from a high-pressure area at the outlet of the air duct to a low-pressure area at the inlet of the air duct, backflow opposite to the air flow conveying direction is generated, the existence of the radial gap enables the air volume of an indoor unit of the air conditioner to.

The backward one end of the rotating ring 3 in the direction of the axis of the guide ring 2 is provided with a flange 301 which circumferentially surrounds the rotating ring 3, the rotating ring 3 is vertically bent outwards in the radial direction to form the flange 301, the impeller 2 is arranged in the air duct of the guide ring 1, the part of the flange 301 is positioned in the L-shaped bent part 103, and the direction of the axis of the guide ring 1 is taken as the front and back direction, the rear end of the flange 301 is positioned in the front of the rear end of the L-shaped bent part 103, so that an L-shaped gap is formed between the flange 301 and the L-shaped bent part 103, meanwhile, a radial gap communicated with the L-shaped gap is also formed between the rotating ring 3 and the guide ring 2, referring to fig. 5, when the impeller 2 rotates, air flows from a high pressure area to a low pressure area through the L-shaped gap, the flange 301 is firstly subjected to right angle reversing, and.

In the embodiment of the present invention, in order to further optimize the weakening effect of the L-shaped bending portion 103 on the air flow backflow, the parameters of the L-shaped gap are controlled.

In the present embodiment, the diameter of the rotating ring 3 is D1, and the diameter of the flange 301 is D2, the relationship between D2 and D1 satisfies: d2 is more than or equal to 106 percent of D1, and D2 is 107 percent of D1.

The radial clearance of the flanging 301 and the L-shaped bent portion 103 is L1, the axial clearance of the flanging 301 and the L-shaped bent portion 103 is B, and the radial clearance of the rotating ring 3 and the baffle ring 1 is L2, wherein the radial clearance L1 of the flanging 301 and the L-shaped bent portion 103 is the same as the radial clearance L2 of the rotating ring 3 and the baffle ring 1, i.e., L1 is L2, and meanwhile, the relationship between L1 and B and D1 satisfies: l1 is less than or equal to 1.9% of D1, B is less than or equal to 1.9% of D1, L1 is 1.8% of D1, B is 1.8% of D1, L1 is the same as L2, L2 is 1.8% of D1, and the effect of air flow convergence at the gap to cause air flow leakage is weakened by setting the gap parameters of the L-shaped bent part 103 and the flanging 301.

In the embodiment of the present invention, the diameter of the air guide sleeve 101 is greater than the diameter of the L-shaped bending portion 103, so that the front end of the air guide sleeve 101 and the connecting position of the L-shaped bending portion 103 adopt arc transition to reduce the stress concentration at the connecting position of the air guide sleeve 3 and the L-shaped bending portion 103.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

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

a casing provided with an air outlet;

the air guide ring and the air guide cover are arranged at the air outlet, the air guide ring is provided with an air duct which is through from front to back, the rear end of the air guide ring is bent outwards along the radial direction of the air guide ring and then bent backwards along the axis direction of the air guide ring to form an L-shaped bent part which is positioned at the rear end of the air guide ring, the air guide ring is connected with the air guide cover through the L-shaped bent part, and the diameter of the air guide cover is larger than that of the air guide ring;

the impeller is rotatably arranged in the air duct, the outer ring of the impeller is provided with a rotating ring, the rear end of the rotating ring is provided with a flanging which circumferentially surrounds the rotating ring, the diameter of the flanging is larger than that of the rotating ring, the flanging is perpendicular to the rotating ring, and the part of the flanging is positioned in the L-shaped bent part, so that an L-shaped gap is formed between the flanging and the L-shaped bent part;

and the motor is arranged on the guide ring, and an output shaft of the motor is fixedly connected with the impeller and used for driving the impeller to rotate.

2. An indoor unit of an air conditioner according to claim 1, wherein: the diameter of the rotating ring is D1, the diameter of the flanging is D2, and D1 and D2 meet the following requirements: d2 is more than or equal to 105 percent of D1.

3. An indoor unit of an air conditioner according to claim 1, wherein: the turn-ups with have axial clearance B between the L type kink, B satisfies: b is less than or equal to 2 percent of D1.

4. An indoor unit of an air conditioner according to claim 1, wherein: the turn-ups with have radial clearance L1 between the L type kink, L satisfies: l1 is less than or equal to 2 percent, D1.

5. An indoor unit of an air conditioner according to claim 4, wherein: the radial clearance L2 between the rotating ring and the guide ring, and the radial clearance L2 is equal to the radial clearance L1.

6. An indoor unit of an air conditioner according to claim 1, wherein: and the joint of the air guide sleeve and the bent part is in arc transition.

7. An indoor unit of an air conditioner according to claim 1, wherein: and a flow guide grid is arranged at the outlet of the air duct by the flow guide ring.

8. An indoor unit of an air conditioner according to claim 1, wherein: the impeller is provided with a plurality of blades at intervals in the circumferential direction, and the top ends of the plurality of blades are fixedly connected with the rotating ring.

9. An indoor unit of an air conditioner according to claim 1, wherein: the axis of the flow guide ring is used as the front and rear direction, and the rear end of the flanging is positioned in front of the rear end of the L-shaped bending part.