CN211778114U - Fan and air conditioner - Google Patents

Abstract

The utility model provides a fan and air conditioner, fan include casing and fan blade, and the fan blade setting is in the casing. The fan blade comprises a chassis, blades and a flow guide retainer ring, wherein the blades are arranged on the chassis, and the flow guide ring is sleeved outside each blade. The diversion baffle ring is sleeved at one end far away from the chassis; the minimum size of the diversion check ring is larger than or equal to the maximum size of the chassis so as to stagger the chassis and the diversion check ring. The utility model provides a fan designs into "the minimum dimension of water conservancy diversion retaining ring is not less than the maximum dimension on chassis" with water conservancy diversion retaining ring and chassis, that is to say, stagger water conservancy diversion retaining ring and chassis, just can not appear the phenomenon that the runner between the blade produced the mould back-off when moulding plastics again. Therefore, the blade, the chassis and the flow guide check ring can be subjected to injection molding through one set of mold, the injection molding is not required to be carried out twice or even for multiple times, and the process of ultrasonic welding of multiple parts is omitted. The working time required by injection molding is saved, and the cost required by injection molding is reduced.

Description

Fan and air conditioner

Technical Field

The utility model belongs to the technical field of the air conditioner, more specifically say, relate to a fan and air conditioner.

Background

At present, a centrifugal fan blade is usually installed in air conditioning ventilation equipment, and is used for enabling airflow to pass through a filter from the outside to the inside, and the air conditioning is a multipurpose backward centrifugal fan.

The existing centrifugal fan blade of the backward centrifugal fan realizes the conveyance of air flow by the axial air inlet and radial air outlet of the centrifugal fan blade, and a flow guide retaining ring is needed to be arranged at an inlet to guide the air flow to realize acting and provide power.

Due to the matching relation design of the guide retaining ring, the blades and the chassis, the phenomenon of mold back-off exists in the flow channel between the blades, so that the one-step molding production of the centrifugal fan blade model is troublesome. Specifically, two sets of molds need to be made, the chassis and the blade usually form one set of mold, the flow guide check ring is formed by one set of mold, and the two parts are connected together by ultrasonic welding and other modes after injection molding is completed respectively to form a complete blade, so that the time is more consumed during injection molding and the cost is higher.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fan to solve the machine-shaping problem consuming time, with high costs that exist among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: the fan comprises a shell and fan blades, wherein the fan blades are arranged in the shell. The fan blades comprise a chassis, blades and a flow guide retainer ring, the blades are arranged on the chassis, and the flow guide ring is sleeved outside each blade. The diversion check ring is sleeved at one end far away from the chassis; the minimum size of the diversion check ring is larger than or equal to the maximum size of the chassis so as to stagger the chassis and the diversion check ring.

Further, still be provided with the drainage circle on the casing, the drainage circle sets up the tip of casing just is close to the blade, the drainage circle orientation the inner circle setting of casing.

Furthermore, a groove is formed between the drainage ring and the casing, and the flow guide check ring extends into the groove.

Further, the depth of the diversion check ring extending into the groove is 4mm.

Further, the distance between the diversion check ring and the diversion ring, and/or the distance between the diversion check ring and the casing is 3-5 mm.

Further, the surface of the diversion check ring is streamline.

Further, the section of the diversion check ring is S-shaped.

Further, the base plate is connected with the blade and is provided with a concave surface, and the blade is positioned on the other side of the concave surface.

Furthermore, the cross section of the drainage ring is arc-shaped, and the convex surface of the drainage ring faces away from the inner ring of the machine shell.

Another object of the utility model is to provide an air conditioner, including above-mentioned fan.

The utility model provides a fan's beneficial effect lies in: compared with the prior art, the guide retainer ring and the chassis are designed into the structure that the minimum size of the guide retainer ring is not smaller than the maximum size of the chassis, namely, the guide retainer ring and the chassis are staggered, and the phenomenon that a runner between blades generates mold back-off can not occur during injection molding. Therefore, the blade, the chassis and the flow guide check ring can be subjected to injection molding through one set of mold, the injection molding is not required to be carried out twice or even for multiple times, and the process of ultrasonic welding of multiple parts is omitted. The working time required by injection molding is saved, and the cost required by injection molding is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic top view of a fan according to an embodiment of the present invention;

fig. 2 is a schematic side view of a fan according to an embodiment of the present invention;

fig. 3 is a schematic sectional structural view of a fan according to an embodiment of the present invention, in which a part of the structure is not shown;

fig. 4 is a schematic diagram of a cross-sectional structure of the blower provided by the embodiment of the present invention, and a partial structure is not shown.

Wherein, in the drawings, the reference numerals are mainly as follows:

1. a housing;

2. a fan blade; 21. a chassis; 22. a blade; 23. a diversion retainer ring;

3. a drainage ring; 4. a groove; 5. an electric motor.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and fig. 2 together, a fan according to an embodiment of the present invention will now be described. The fan comprises a casing 1 and fan blades 2, wherein the fan blades 2 are arranged in the casing 1. The fan blade 2 comprises a chassis 21, a blade 22 and a guide baffle ring 23. In the drawing, a circular or elliptical centrifugal fan blade 2 is taken as an example (other shapes are not listed one by one here), blades 22 are arranged on a chassis 21, a guide baffle ring 23 is sleeved on an outer edge formed by each blade 22, and the guide baffle ring 23 is sleeved on the blade 22 and is far away from the chassis 21. The minimum dimension of the baffle 23 is greater than or equal to the maximum dimension of the chassis 21. So that the baffle 23 and the chassis 21 are vertically offset. Specifically, according to the information provided in the figures, the baffle 23 cannot cover the edge of the chassis 21 when viewed from above the baffle 23. According to the arrangement, the reverse buckling of the mold caused by the flow passage between the blades 22 and the vanes 22 is eliminated, and the chassis 21, the blades 22 and the flow guide retainer ring 23 can be injection molded by the same set of mold.

The utility model provides a fan compares with prior art, designs into the state of mentioning above with water conservancy diversion retaining ring 23 and chassis 21, that is to say, stagger water conservancy diversion retaining ring 23 and chassis 21, just can not appear the phenomenon that the runner between blade 22 produced the mould back-off when moulding plastics. Therefore, the blades 22, the chassis 21 and the guide baffle ring 23 can be injection molded through a set of mold, and the injection molding is not required to be performed twice or even repeatedly, so that the process of ultrasonically welding a plurality of parts is omitted. The working time required by injection molding is saved, and the cost required by injection molding is reduced.

Referring to fig. 3 and 4, the casing 1 is further provided with a drainage ring 3, wherein the drainage ring 3 is disposed at an end portion of the casing 1 (at a top portion of the casing 1 as viewed in the drawings), the drainage ring 3 is far away from the chassis 21, and the drainage ring 3 is bent toward an internal cavity of the casing 1, so as to facilitate drainage of the airflow from the outside to the inside of the casing 1.

Preferably, the longitudinal section of the drainage ring 3 is arc-shaped, and the concave surface of the arc is opposite to the inner wall of the machine shell 1. The design is beneficial to the air flow to flow in at a higher speed, and the shape of the guide ring 3 is convenient for the air flow to the blades 22 more smoothly.

Further, referring to fig. 3 and fig. 4, as an embodiment of the fan provided by the present invention, the chassis 21 is designed as a spherical plate, wherein the concave surface of the chassis 21 and the blades 22 are respectively disposed on two sides of the chassis 21. The design is to make the air flow more conveniently flow out from the casing 1, so as to prevent the air flow from being disturbed in the casing 1 caused by the long-time retention of the air flow in the casing 1. Further, taking the cylindrical casing 1 as an example, it can be derived from the fluid dynamics for the design of the bottom case having such a shape, and a cylindrical air flow is easily generated. To minimize the impact of the centrifugal flow on the inner wall of the housing.

Preferably, in order to enable the airflow to better flow into the casing 1, the diversion check ring 23 is designed into a streamline shape, specifically, the longitudinal section of the diversion check ring 23 is designed into an S shape, and the diversion check ring 23 and the chassis 21 are smoothly transited into an air outlet duct, so that a pressure flow field is generated, the flow velocity of the fluid is increased, and the total pressure of the outlet air of the fan blade 2 is improved.

In addition, be formed with recess 4 between drainage circle 3 and the casing 1, when the assembly, stretch into recess 4 with water conservancy diversion retaining ring 23, according to this design, the degree of depth that the water conservancy diversion circle deepened recess 4 is 4mm, and the degree of depth that certainly stretches into needs to be confirmed according to the model of reality, the demand of actual processing. The distance between the flow guide check ring 23 and the flow guide ring 3 and the distance between the flow guide check ring 23 and the casing 1 are designed to be 3-5 mm. Effectively preventing the air flow from reflowing. The actual value of the design needs to consider the reasons of cost, model and the like, and is not described in detail herein.

In detail, the utility model discloses an injection moulding integrated into one piece's backward formula centrifugal fan, fan setting are in the inside of place casing 1, and casing 1 includes the square part of lower part, the circular part on upper portion. The present invention is explained based on this case 1. Centrifugal new fan contains in the cylindric part of casing, has motor 5, fan blade 2, drainage circle 3, and drainage circle 3 has adopted the toper structure in the picture, by cylinder outer lane direction to the fan blade 2 in the middle of, drainage circle 3 minimum diameter calculates: r2= Q/3600 pi V, where Q is the wind volume, V is the wind speed, and V <4 m/s. Some of centrifugal blade 22 is higher than the lowest part of drainage circle 3, the utility model discloses design with H =7mm, the amount of wind has promoted 2% under the equal noise, carries out the analog computation back, discovers than traditional fan blade 2 and has increased the work that blade 22 of H part was done to make the amount of wind obtain promoting. The motor 5 is arranged below the fan blade 2 and provides power for the whole fan component.

The flowing direction of the airflow is shown as an arrow in the figure, the airflow outside the machine shell 1 is guided by the guide ring 3 to enter the machine shell 1, the blades 22 do work on the airflow, and the airflow is blown to the lower part of the cylinder through a channel formed by the guide retaining ring 23 and the chassis 21. The circle center of the drainage ring 3, the circle center of the flow guide check ring 23 and the center formed by the blades 22 are coaxial. The fan blade 2 comprises a guide baffle ring 23, a fan blade 22 and a chassis 21. The minimum diameter of the drainage ring 3 is not less than the maximum diameter of the flow guide check ring 23, the flow guide check ring 23 far away from the direction of the chassis 21 of the fan blade 2 is inserted into the groove 4 formed by the drainage ring 3 and the cylinder wall, the insertion depth is 4mm, and the distance between the flow guide check ring 23 and the drainage ring 3 and the cylinder wall is preferably 3-5mm, so that gas backflow is effectively blocked, and large pneumatic noise cannot be generated. The section of the flow guide check ring 23 is S-shaped, the flow guide check ring 23 and the chassis 21 are smoothly transited into an air outlet duct, which is beneficial to generating a pressure flow field, increasing the flow velocity and improving the total pressure of the outlet air of the fan blade 2.

Referring to fig. 1 and 2, in the backward centrifugal fan blade 2 integrally molded by injection molding of the present invention, the minimum diameter B of the front view diversion baffle ring 23 is greater than the maximum diameter a of the chassis 21, the chassis 21 is a sphere-like structure, and the sphere-like structure is designed to make the airflow more easily form the airflow parallel to the cylinder, so as to reduce the impact loss of the centrifugal airflow to the cylinder wall to the maximum extent.

The utility model discloses only need develop one set of mould can produce backward formula centrifugation fan blade 2, reduce the mould and develop quantity, reduced the research and development cost. One set of mould production part need not secondary operation welding, and one set of mould production need not to carry on processes such as secondary welding again, and the part dynamic balance parameter is good after the machine-shaping, and the qualification rate is high, need not the secondary counter weight, has promoted production efficiency greatly. After integrated into one piece, new fan efficiency can also obtain promoting.

The utility model also provides an air conditioner, the air conditioner includes above-mentioned fan.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The fan comprises a casing and fan blades, wherein each fan blade comprises a chassis, a blade arranged on the chassis and a flow guide check ring sleeved outside the blade, and the flow guide check ring is sleeved at one end far away from the chassis; the method is characterized in that:

the minimum size of the diversion check ring is not smaller than the maximum size of the chassis, so that the chassis and the diversion check ring are staggered.

2. The fan of claim 1, wherein: the base plate is connected with the blades and is provided with a concave surface, and the blades are positioned on the other side of the concave surface.

3. The fan of claim 1, wherein: still be provided with the drainage circle on the casing, the drainage circle sets up the tip of casing just is close to the blade, the drainage circle orientation the inner circle setting of casing.

4. The fan of claim 3, wherein: the cross-section of drainage circle is the arc just the convex surface of drainage circle dorsad the inner wall of casing.

5. The fan of claim 3, wherein: a groove is formed between the drainage ring and the casing, and the flow guide check ring extends into the groove.

6. The fan of claim 5, wherein: the depth of the diversion check ring extending into the groove is 4mm.

7. The fan of claim 5, wherein: the distance between the diversion check ring and the diversion ring and/or the distance between the diversion check ring and the casing is 3-5 mm.

8. The fan of claim 1, wherein: the surface of the diversion check ring is streamline.

9. The fan of claim 8, wherein: the section of the diversion check ring is S-shaped.

10. An air conditioner, characterized in that: a fan comprising any of claims 1-9.

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