CN218495191U

CN218495191U - Top air outlet structure and air conditioner outdoor unit

Info

Publication number: CN218495191U
Application number: CN202222448107.5U
Authority: CN
Inventors: 廖志平; 骆海; 曹姚松
Original assignee: TCL Air Conditioner Zhongshan Co Ltd
Current assignee: TCL Air Conditioner Zhongshan Co Ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-02-17
Anticipated expiration: 2032-09-15

Abstract

The application provides a top air-out structure and air condensing units, and top air-out structure is used for this air condensing units. The top air outlet structure comprises a louver top cover, a fan component, a connecting piece and a bracket; the bracket supports the louver top cover; wherein the bracket comprises a reinforcing plate; the reinforcing plate is provided with a yielding hole, and the connecting piece penetrates through the yielding hole; the fan assembly is connected with the shutter top cover through the connecting piece, and the fan assembly is abutted to one side, away from the shutter top cover, of the reinforcing plate. The application aims to solve the technical problem that the service time of the outdoor unit of the air conditioner is short due to fatigue fracture and damage of the louver top cover.

Description

Top air outlet structure and air conditioner outdoor unit

Technical Field

The application relates to the technical field of air conditioner outdoor units, in particular to a top air outlet structure and an air conditioner outdoor unit.

Background

The outdoor unit of an air conditioner is an important component of the air conditioner. The top air outlet outdoor machine is a common machine type of an air conditioner outdoor machine. The top air-out air-conditioning outdoor unit comprises a louver top cover arranged on the top of the top air-out air-conditioning outdoor unit and a fan assembly arranged in the louver top cover. The fan assembly is mounted on the louver top cover. Under the coupling action of multiple factors such as environment and fan components, the technical problem that the service time of the outdoor unit of the air conditioner is short due to fatigue fracture and damage of the louver top cover exists.

SUMMERY OF THE UTILITY MODEL

The main objective of this application provides a top air-out structure and air condensing units, aims at solving the technical problem that the tripe top cap exists because of its fatigue fracture impaired and lead to air condensing units time of service weak point.

The application provides a top air outlet structure, which comprises a louver top cover, a fan assembly, a connecting piece and a bracket; the bracket supports the louver top cover; wherein the bracket comprises a reinforcing plate; the reinforcing plate is provided with a yielding hole, and the connecting piece penetrates through the yielding hole; the fan assembly is connected with the shutter top cover through the connecting piece, and the fan assembly is abutted to one side, away from the shutter top cover, of the reinforcing plate.

Optionally, the bracket comprises a top ring, the reinforcing plate being connected with the top ring; the top circle is injectd with the communicating chamber of stepping down in the hole, at least some embedding of fan subassembly the intracavity of stepping down.

Optionally, the top ring abuts against the louver top cover.

Optionally, the stiffening plate rests on the louver top cover.

Optionally, the support further comprises a plurality of support rods, the support rods radially extend from the top ring, and the support rods are arranged along the circumferential direction of the top ring at intervals.

Optionally, one end of the supporting rod, which is far away from the top ring, is configured with a fixing part, and the fixing part is flat.

Optionally, the louver top cover comprises an inner ring, the fan assembly comprises a driving element, and the driving element is connected with the inner ring through the connecting element; an annular pressure rib is constructed on the inner ring, and the driving piece is positioned in an area limited by the annular pressure rib in a projection plane perpendicular to the air outlet direction of the top air outlet structure; the distance between the annular pressing rib and the outer edge of the inner ring is greater than or equal to 5mm.

Optionally, the louver top cover further comprises louvers and an outer ring; in a projection plane perpendicular to the air outlet direction of the top air outlet structure, two ends of the louver are arc-shaped and respectively extend to the outer edge of the inner ring and the inner edge of the outer ring.

Optionally, the angle between the tangential direction of the louver and the horizontal direction is between 55 ° and 75 °.

Optionally, an embodiment of the present application provides an outdoor unit of an air conditioner, including:

a housing defining a cavity having an opening; and

the top air outlet structure is adopted; wherein the shutter top cover covers the opening, and the fan assembly and the bracket are arranged in the cavity.

In the technical scheme of this application, through set up the reinforcing plate on the support. Be equipped with the hole of stepping down on the reinforcing plate, the hole of stepping down is used for dodging the connecting piece of connecting fan subassembly and tripe top cap for the fan subassembly is fixed simultaneously on the reinforcing plate of tripe top cap and support. The fan assembly is abutted to one side, away from the louver top cover, of the reinforcing plate, so that the reinforcing plate can disperse axial load, the stress level borne by the louver top cover is reduced, the position, connected with the fan assembly, of the louver top cover is not prone to being broken due to fatigue damage, and the purpose of prolonging the fatigue life of the louver top cover is achieved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described 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 according to the structures shown in the drawings without creative efforts.

Fig. 1 is an assembly schematic view of a louver top cover and a bracket of a top air outlet structure provided in an embodiment of the present application;

fig. 2 is a schematic perspective view of a bracket of a top air outlet structure according to an embodiment of the present application;

FIG. 3 is an enlarged view of a portion B of FIG. 2;

fig. 4 is a schematic plan view of a bracket of a top air outlet structure according to an embodiment of the present application;

fig. 5 is a schematic structural view of a reinforcing plate of a bracket of a top air outlet structure according to an embodiment of the present disclosure;

FIG. 6 isbase:Sub>A schematic cross-sectional view of section A-A of FIG. 5;

fig. 7 is a schematic structural view of a louver top cover of a top air outlet structure provided in the embodiment of the present application;

FIG. 8 is an enlarged view of a portion of FIG. 7 at C;

fig. 9 is a partial enlarged view of fig. 7 at D.

List of reference numerals

100	Shutter top cover	210	Reinforcing plate
				200	Support frame	211	Hole of stepping down
110	Inner ring	220	Top ring
				120	Shutter	230	Support rod
130	Outer ring	240	Circumferential weld
				111	Rib pressing	231	Fixing part
112	Screw hole	231a	Fixing hole
				113	Outer edge	S1	Air outlet
114	Reinforcing rib	S2	Abdication cavity
				131	Inner edge

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

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

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

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 such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. 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.

The air conditioner outdoor unit derives the model of the top air outlet outdoor unit under the influence of the house structure. For example, due to the house style, north american regions are often equipped with top outlet air conditioners. In the prior art, for example, patent document CN205448080U describes a top-outlet air conditioner outdoor unit, which includes a bracket, a top cover and a fan assembly. The fan assembly is fixed on the top cover through a connecting piece and is arranged in the machine body. The support supports the top cover to prevent the top cover from deforming under the weight or inertia of the fan assembly.

However, in north america regions, climates are complicated and changeable, and the tripe top cap and the impeller of air condensing units usually can appear ponding and freeze the unfavorable operating mode such as, lead to the impeller out of balance state, and the fatigue life of tripe top cap is compelled to shorten, and then influences the time of being in service of off-premises station. Through failure analysis of the louver top cover, the failure position of the louver top cover is mainly located at the position connected with the fan assembly. For this reason, this application provides a top air-out structure, aims at prolonging the fatigue life of tripe top cap.

It should be emphasized that the above discussion of the technical problems to be solved by the present application is only exemplary explained in the north american region, and is not intended to limit the region of the top-outlet structure and the air conditioner outdoor unit proposed by the present application.

The embodiment of the application provides a top air-out structure, through the axial atress of dispersion tripe top cap 100 to reduce the stress level that tripe top cap 100 received, and then prolong its fatigue life.

As shown in fig. 1, the top outlet structure includes a louver top cover 100, a fan assembly (not shown), a connector (not shown), and a bracket 200. The bracket 200 supports the louver top cover 100. In an embodiment, as shown in fig. 2, the bracket 200 includes a reinforcement plate 210. As shown in fig. 2, 5 and 6, the reinforcing plate 210 is configured with a relief hole 211. The connecting piece passes through the abdicating hole 211; the fan assembly is connected to the louver top cover 100 through the connecting piece, and the fan assembly abuts against one side of the reinforcing plate 210 departing from the louver top cover 100.

In the technical solution of the embodiment of the present application, the reinforcing plate 210 is disposed on the bracket 200. The reinforcing plate 210 is provided with a yielding hole 211, and the yielding hole 211 is used for yielding a connecting piece for connecting the fan assembly and the louver top cover 100, so that the fan assembly is simultaneously fixed on the louver top cover 100 and the reinforcing plate 210 of the bracket 200. The fan assembly abuts against one side of the reinforcing plate 210, which is far away from the louver top cover 100; the reinforcing plate 210 provides a sufficient supporting surface for the fan assembly, and the reinforcing plate 210 can disperse the axial load to reduce the stress level borne by the louver top cover 100, so that the position of the louver top cover 100 connected with the fan assembly is not easily damaged by fatigue and is not broken, and the purpose of prolonging the fatigue life of the louver top cover 100 is achieved.

The test proves that: the old shutter top cover without any correction is cracked after the machine continuously runs for 4.5 hours, and the market maintenance rate reaches 25X 10 ^-6 The market maintenance cost accounts for the largest proportion. The structure proposed in the embodiment of the present application was tested, that is: the reinforcing plate 210 is additionally arranged on the support 200, the fan assembly is supported by the support 200 and the louver top cover 100 through bearing together, the outdoor unit of the air conditioner can continuously run for more than 100 hours without abnormality, and the market maintenance rate is about 2 x 10 ^-6 The maintenance rate can be reduced by 92%, the market maintenance cost is reduced by about 90%, and the strength of the top cover can effectively resist the destructive force of the louver top cover 100 caused by severe weather.

It should be noted that the fan assembly includes a motor and an impeller. The motor is fixed on the louver top cover 100 through a connecting piece. The motor abuts against the reinforcing plate 210. The motor drives the impeller to rotate to generate air flow, and the air is discharged from the air outlet S1 of the louver top cover 100.

Further, as shown in fig. 2, 5 and 7, the number of the escape holes 211 is the same as the number of the screw holes 112 on the louver top cover 100, and they are matched with each other in position. Typically, the screw holes 112 are annularly arrayed on the louver top cover 100. Likewise, the relief holes 211 are also in an annular array on the stiffener plate 210.

The connector is connected to the screw hole 112 from one side of the reinforcing plate to the other side of the reinforcing plate through the escape hole 211, so that the fan assembly is connected to the louver top cover 100. It should be noted that the connection member is typically a threaded connection member. For example, the connecting member may be a fastener such as a screw or a stud.

As an alternative to the above embodiment, as shown in fig. 2, the bracket 200 includes a top ring 220, and the reinforcing plate 210 is connected to the top ring 220. In one embodiment, the top ring 220 and the stiffener plate 210 may be two separate pieces. The reinforcing plate 210 is welded to the top ring 220. For example, the reinforcing plate 210 and the top ring 220 are both circular. There is at least one arc-shaped weld 240 between the reinforcement plate 210 and the top ring 220. For example, as shown in FIG. 4, the stiffener plate 210 and the top ring 220 of the bracket 200 can be welded by four arc welds 240. Four arc welds 240 are in a circumferential array. The length L of the arc-shaped weld 240 is greater than or equal to 30mm. In some embodiments, the quality requirements for the weld are: the tensile resistance of each welding seam is greater than or equal to 7.5kN, and the total tensile resistance of four positions is greater than or equal to 30kN.

In a specific implementation process, as shown in fig. 2, the top ring 220 defines a yielding cavity S2 communicated with the yielding hole 211. At least one part of the fan assembly is embedded in the yielding cavity S2. The fan assembly includes a motor and an impeller. At least a portion of the fan assembly may be part of the motor. The yielding cavity S2 of the top ring 220 is used for yielding a motor of the fan assembly, and the projection of the gravity center of the fan assembly in the gravity direction falls into the top ring 220.

In some embodiments, the top ring 220 is a ring-shaped structure formed by bending a wire and having a relief cavity S2. Both ends of the abdicating cavity S2 are provided with cavity openings. After the reinforcing plate 210 is welded on the top ring 220, one end cavity opening of the abdicating cavity S2 is covered by the top ring 220, and the other end cavity opening is an inlet opening for installing a motor.

As an alternative to the above embodiment, the top ring 220 abuts against the louver top cover 100. The top ring 220 is abutted against the louver top cover 100 to support the louver top cover 100, so as to prevent the louver top cover 100 from being deformed by the gravity of the fan assembly. In particular embodiments, the louver top cover 100 includes an inner ring 110. Top ring 220 abuts inner ring 110.

As an alternative to the above embodiment, the reinforcing plate 210 abuts against the louver top cover 100. The reinforcing plate 210 has a sufficient supporting surface, which can support the louver top cover 100 on one hand, and avoid the louver top cover 100 from deforming due to the gravity of the fan assembly; on the other hand, the axial load can be dispersed to reduce the stress level born by the louver top cover 100, so that the position of the louver top cover 100 connected with the fan component is not easy to be damaged by fatigue and broken, and the aim of prolonging the fatigue life of the louver top cover 100 is fulfilled.

As an alternative to the above-mentioned embodiment, as shown in fig. 2 and 4, the support frame 200 further includes a plurality of support rods 230, the support rods 230 extend radially from the top ring 220, and the plurality of support rods 230 are spaced apart from each other along the circumferential direction of the top ring 220. When installed, the support rod 230 is connected to a wind guide ring inside the air conditioner outdoor unit, for supporting the louver top cover 100 and bearing the weight of the wind power assembly. In a typical case, the support rods 230 are formed by bending a wire. The supporting bar 230 is welded to the top ring 220. The support rod 230 is welded to the top ring 220 on the side facing away from the reinforcing plate 210.

As an alternative to the above embodiment, as shown in fig. 3, a fixing portion 231 is formed at an end of the supporting rod 230 away from the top ring 220, and the fixing portion 231 is flat. In the specific implementation process, the fixing portion 231 is detachably connected or fixedly connected with the mounting portion on the wind guide ring. The fixing portion 231 is provided with a fixing hole 231a. The mounting part of the air guide ring is provided with a mounting hole matched with the fixing hole 231a. The fixing holes 231a and the mounting holes are connected by fixing members to fix the support bar 230 to the wind guide ring. The fixing member may be a pin, a screw, or the like. For another example, the mounting portion of the wind guiding ring is an insertion hole, the fixing portion 231 is inserted into the insertion hole, and then the supporting rod 230 is welded to the wind guiding ring. The fixing portion 231 is designed to be flat, mainly to reduce the difficulty of assembling the supporting rod 230 and the wind-guiding ring.

As an alternative to the above embodiment, as shown in fig. 7, the louver top cover 100 includes an inner ring 110, and the fan assembly includes a driving member connected to the inner ring 110 through the connecting member. The drive member is typically an electric motor. The motor is connected to the inner race 110 through a connecting member. As shown in fig. 7 and 8, an annular bead 111 is provided on the inner ring 110. Generally, the annular beads 111 define the mounting location for the motor. In a projection plane perpendicular to the air outlet direction of the top air outlet structure, the driving member is located in an area defined by the annular pressing rib 111. In the specific installation, a driving member (motor) is provided corresponding to the annular beads 111. The annular beads 111 serve to reinforce the louver top cover 100 and increase strength. As shown in fig. 8, the distance H between the annular bead 111 and the outer edge 113 of the inner ring 110 is greater than or equal to 5mm, which mainly increases the distribution area of concentrated stress to weaken the peak stress of stress concentration in the area adjacent to the outer edge 113 of the inner ring 110, improves the fatigue life of the louver top cover 100, and is beneficial to sheet metal stretch processing.

As an alternative to the above embodiment, as shown in fig. 7, the louver top cover 100 further includes louvers 120 and an outer ring 130; as shown in fig. 8 and 9, in a projection plane perpendicular to the air outlet direction of the top air outlet structure, both ends of the louver 120 are arc-shaped and respectively extend to the outer edge 113 of the inner ring 110 and the inner edge 131 of the outer ring 130. The louvers 120 are sequentially spaced along the circumferential direction of the inner ring 110 to form an air outlet S1. When the top air outlet outdoor unit operates for a long time or operates in a freezing rain environment, the impeller on the louver top cover 100 is easy to accumulate water and freeze, the impeller loses dynamic balance and operates at a high speed after being frozen, the root strength of the two ends of the louver 120 is the weakest part, and the fatigue stress is concentrated to the ultimate strength and then is broken. The two ends of the louver 120 are designed to be arc-shaped, so that the overall strength of the louver top cover 100 is enhanced, and the two ends of the louver 120 are prevented from being cracked due to stress concentration caused by sharp corners at the root parts.

In the specific implementation process, the larger the arc-shaped radius of the two ends of the louver 120, the better, which is beneficial to weakening the peak stress of stress concentration; generally, the radius R of the circular arc at the two ends of the louver 120 is 3 to 5 times the thickness of the louver 120.

As an alternative to the above embodiment, the angle between the tangential direction of the louver 120 and the horizontal direction is 55 ° to 75 °. In order to ensure smooth air outlet of the louver top cover 100 and reduce wind resistance and vibration, the louvers 120 are twisted into a certain angle after being blanked so as to match the angle of the impeller, thereby achieving the purposes of increasing air volume and reducing vibration, and in general, an included angle between the tangential direction of the louvers 120 and the horizontal direction is between 55 ° and 75 °.

In some embodiments, the motor is mounted on inner race 110. For this reason, in order to ensure sufficient strength of the position of the inner ring 110 where the motor is mounted, the inner ring 110 is provided with the deformed reinforcing ribs 114 to ensure that the motor mounting position strength is within the effective strength range. The depth of the reinforcing rib 114 is 1.5-2 mm. The reinforcing rib 114 has a continuous structure.

In some examples, a gasket, a washer or a nut with a larger size is selected to be matched with the connecting piece so as to increase the contact area between the gasket, the washer or the nut and the top cover, and further, the local stress of the louver top cover 100 can be effectively reduced so as to improve the fatigue life. For example, a washer, washer or nut may be used

And the above.

Through the optimization of the structure, the reliability test and verification are carried out on the entity complete machine, the icing unbalance of the fan is simulated aiming at the outdoor units with the same model, and the outdoor units are operated at the highest rotating speed. The top cover of the old shutter 120 window is not modified, the top cover cracks after the machine continuously runs for 4.5 hours, and the market maintenance rate reaches 25X 10 ^-6 The market maintenance cost accounts for the largest proportion. Large gaskets are added between the fan supporting surface, the screw cap, the bolt and the top cover, unacceptable cracks appear after the machine continuously runs for 25.5 hours, and the market maintenance rate is about 10 x 10 ^-6 And the reduction rate of the market maintenance cost is about 20 percent. After the top cover structure of the louver 120 window is designed and optimized, unacceptable cracks appear after the machine continuously runs for 48 hours, and the market maintenance rate is about 5 x 10 ^-6 The market maintenance cost is reduced by about 55%.

The embodiment of the application further provides an air conditioner outdoor unit, which comprises a casing and a top air outlet structure. The top air outlet structure adopts a part or all of the embodiments, so that the top air outlet structure has a part of or all of the technical advantages of the embodiments, and details are not repeated herein. The housing defines a cavity having an opening. The casing is generally made by riveting and splicing sheet metal. The louver top cover 100 is adapted to the shape of the opening. The louver top cover 100 covers the opening, and typically, the louver top cover 100 is connected to the housing by means of a plug, a snap, or a screw. The blower assembly and the bracket 200 are disposed within the cavity. The outdoor unit of the air conditioner further comprises an air guide ring, and the bracket 200 is further connected with the air guide ring. For example, the fixing portion 231 of the bracket 200 is connected to the wind guide ring.

The above description is only an alternative embodiment of the present application, and not intended to limit the scope of the present application, and all modifications and equivalents of the subject matter of the present application, which are made by the following claims and their equivalents, or which are directly or indirectly applicable to other related arts, are intended to be included within the scope of the present application.

Claims

1. A top air outlet structure is characterized by comprising a louver top cover, a fan assembly, a connecting piece and a bracket; the bracket supports the louver top cover;

wherein the bracket comprises a reinforcing plate; the reinforcing plate is provided with a yielding hole, and the connecting piece penetrates through the yielding hole; the fan assembly is connected with the shutter top cover through the connecting piece, and the fan assembly is abutted to one side, away from the shutter top cover, of the reinforcing plate.

2. The top vent structure of claim 1, wherein the bracket comprises a top ring, and the stiffener plate is connected to the top ring;

the top circle is injectd with the communicating chamber of stepping down in the hole, at least some embedding of fan subassembly the intracavity of stepping down.

3. The top vent structure of claim 2, wherein the top ring abuts against the louver top cover.

4. The top wind structure according to any one of claims 1 to 3, characterized in that the reinforcing plate abuts against the louver top cover.

5. The top outlet structure of claim 2 or 3, wherein the support further comprises a plurality of support rods extending radially from the top ring, and the plurality of support rods are arranged at intervals along the circumference of the top ring.

6. The top outlet structure of claim 5, wherein a fixing portion is formed at an end of the support rod away from the top ring, and the fixing portion is flat.

7. The top outlet structure of claim 1, wherein the louver top cover comprises an inner ring, and the fan assembly comprises a driving member, and the driving member is connected with the inner ring through the connecting member;

an annular pressure rib is constructed on the inner ring, and the driving piece is positioned in an area limited by the annular pressure rib in a projection plane perpendicular to the air outlet direction of the top air outlet structure; the distance between the annular pressing rib and the outer edge of the inner ring is greater than or equal to 5mm.

8. The top outlet structure of claim 7, wherein the louver top cover further comprises louvers and an outer ring; in a projection plane perpendicular to the air outlet direction of the top air outlet structure, two ends of the louver are arc-shaped and respectively extend to the outer edge of the inner ring and the inner edge of the outer ring.

9. The top outlet structure of claim 8, wherein the angle between the tangential direction of the louver and the horizontal direction is between 55 ° and 75 °.

10. An outdoor unit of an air conditioner, comprising:

a housing defining a cavity having an opening; and

the top vent structure of any one of claims 1 to 9; wherein the shutter top cover covers the opening, and the fan assembly and the bracket are arranged in the cavity.