CN111946648A - Fan, air pipe inner unit and air conditioner - Google Patents

Abstract

The invention relates to the technical field of air conditioners, in particular to a fan, an air duct inner unit and an air conditioner. The fan includes a mounting plate connected to the air duct inner unit, and a first air outlet ring channel and a second air outlet ring channel symmetrically arranged on the installation plate. , the air supply assembly arranged on the mounting plate; the air supply assembly is arranged between the first air outlet ring channel and the second air outlet ring channel; the air supply assembly includes a drive member arranged on the installation plate, and the air supply assembly is connected with the drive member. The first axial flow fan blade, and the second axial flow fan blade connected with the driving element. Compared with the traditional centrifugal fan blades, the invention provides air supply through the axial flow fan blades of the air supply assembly. Compared with the traditional centrifugal fan blades, the air outlet is stable and the noise is low. At the same time, the structure of the two air outlet rings is set according to the static pressure balance principle, and the air outlet volume is large. Due to the intake air volume delivered by the air supply unit, the motor speed is greatly reduced compared with the traditional fan, which reduces the power consumption. In addition, the structure of the fan of the present invention is simple, the assembly difficulty is reduced, the assembly efficiency is improved, and the production cost is reduced.

Description

A fan, an air duct inner unit and an air conditioner

technical field

The invention relates to the technical field of air conditioners, in particular to a fan, an air duct internal unit and an air conditioner.

Background technique

As the core part of the central air-conditioning system, the air duct internal unit is widely used in various fields such as office buildings, commercial plazas and real estate due to its simple structure, convenient installation and high cost performance. The traditional air duct inner unit is mainly composed of evaporator, fan mounting plate, fan, side plate, etc. The evaporator is the key component of the air conditioner. During cooling, the low-temperature and low-pressure refrigerant liquid in the evaporator pipeline absorbs the heat in the gas, thereby reducing the Indoor ambient temperature. The flow of gas in the indoor environment is gentle. During the cooling process, it is necessary to speed up the flow of gas to improve the efficiency of cold and heat exchange. The fan is the key component to speed up the flow of gas. Wind, guide wind, adjust wind speed, etc. The traditional fan is mainly composed of centrifugal fan blade, motor shaft, motor, fan mounting plate, motor bracket, clamp, bearing rubber seat, volute, sponge, etc. The motor is fixed in the fan mounting plate through the motor bracket and clamp. The blade and the motor shaft are connected to the fan mounting plate through the bearing rubber seat. During operation, the motor rotates and drives the centrifugal fan blade to rotate through the motor shaft, thereby changing the gas flow direction and speed, and discharging the gas to the side of the evaporator for heat exchange. Traditional fans are complex in structure, difficult to assemble, and prone to deviations between freely rotating objects and the motor shaft, while the centrifugal fan blades are large, and the dynamic balance between the motor shaft and the fan blades is prone to failure, resulting in vibration of the fan. This makes the air output unstable. When the dynamic balance between the motor shaft and the fan blades fails, the fan will vibrate, which is prone to abnormal noise. On the other hand, the air output of the traditional fan structure depends on the speed of the motor. The motor speed needs to be increased, and the power consumption is large.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a fan, an air duct inner unit including the aforementioned fan, and an air conditioner including the aforementioned air duct inner unit.

The present invention adopts the following scheme to realize:

A fan is arranged inside an air duct inner unit of an air conditioner, the fan comprises: a mounting plate connected with the air duct inner unit, a first air outlet ring channel and a second air outlet ring channel symmetrically arranged on the installation plate, arranged on the The air supply assembly on the mounting plate is used for supplying air to the first air outlet ring and the second air outlet; the air supply assembly is arranged between the first air outlet and the second air outlet. the air supply assembly includes a driving member arranged on the mounting plate, a first axial flow fan blade connected to the driving member for supplying air to the first air outlet ring, and the driving member The connected second axial flow fan blade for supplying air to the second air outlet ring channel.

Further, the first air outlet ring channel and the second air outlet ring channel both include an inner ring channel member, an outer ring channel member sleeved on the inner ring channel member, and an air inlet disposed on the side wall of the outer ring channel member. A space for gas circulation is formed between the inner ring channel piece and the outer ring channel piece; the air inlet frame of the first air outlet ring channel is detachably connected to the air inlet frame of the second air outlet ring channel ; The first air outlet frame and the second air outlet frame together form a space for accommodating the air supply assembly, and the first axial flow fan blade is located in the air inlet frame of the first air outlet ring channel, The second axial flow fan blade is located in the air inlet frame of the second air outlet ring channel.

Further, the upper end of the inner ring member is bent toward the outer ring member and forms an air inlet for gas circulation between the inner ring member and the outer ring member, and the upper end of the outer ring member is bent downward and the The upper end of the inner ring channel member is wrapped inside, and an air outlet is formed between the upper end portion of the outer ring channel member and the inner ring channel member, and the area of the air outlet is smaller than the area of the air inlet; the inner ring A plurality of connecting pieces for connecting the outer ring track pieces are provided at positions near the upper end of the track pieces.

Further, the air inlet frame is provided with a plurality of air holes for air circulation, and the lower side of the air inlet frame is also provided with an opening for the driving member to pass through.

Further, both the first air outlet ring channel and the second air outlet ring channel are connected with the mounting plate through a connecting assembly, and the connecting assembly includes an annular collar connected with the outer ring channel piece, which is used to connect with the mounting plate. The annular collar and the fixing ring of the mounting plate, and the sealing rubber ring arranged between the annular collar and the fixing ring.

Further, the air inlet frame of the first air outlet ring channel and the air inlet frame of the second air outlet ring channel are connected by a snap assembly.

Further, the positions of the mounting plate corresponding to the first air outlet ring channel and the second air outlet ring channel are provided with air ports for air circulation.

Further, the driving member is fixedly connected to the mounting plate through a fixing bracket, and the driving member is fixed on the fixing bracket through a clamp; the driving member is a double-headed shaft motor, and the main shaft of the double-headed shaft motor is two The ends face the first air outlet ring channel and the second air outlet ring channel respectively.

An air duct inner unit includes the aforementioned fan.

An air conditioner includes the aforementioned air duct internal unit.

Compared with the prior art, the present invention has the following beneficial effects:

In the present invention, the first air outlet ring and the second air outlet ring are symmetrically arranged on the mounting plate, and the air is supplied by the axial flow fan blades of the air supply assembly. Compared with the traditional centrifugal fan blades, the air outlet is stable and noisy. At the same time, the structure of the two air outlet rings is set according to the principle of static pressure balance. The air outlet volume is much larger than the air inlet volume delivered by the air supply component. Under the condition of the same air volume demand, the motor speed is significantly lower than that of the traditional fan, which greatly reduces the power consumption. On the other hand, the structure of the fan of the present invention is simpler than that of the traditional fan, the number of components is less, the assembly difficulty is reduced, the assembly efficiency is improved, and the production cost is reduced.

Description of drawings

FIG. 1 is an exploded view of a fan provided by the present invention.

FIG. 2 is a schematic structural diagram of the first air outlet ring of the present invention.

3 is a cross-sectional view of the first air outlet ring of the present invention.

FIG. 4 is an assembly drawing of the fan of the present invention.

FIG. 5 is a schematic diagram of the connection between the fan and the air duct inner unit according to the present invention.

The figure includes:

Mounting plate 1, air port 11, first air outlet ring 2, inner ring channel piece 21, outer ring channel piece 22, air inlet frame 23, air inlet 24, air outlet 25, connecting piece 26, air hole 27, opening 28, The second air outlet ring 3, the air supply assembly 4, the driving member 41, the first axial flow fan blade 42, the second axial flow fan blade 43, the fixing bracket 44, the clamp 45, the connecting assembly 5, the annular clamp ring 51, The fixing ring 52 , the sealing rubber ring 53 , the buckle assembly 6 , the inner casing of the air duct 7 , and the evaporator 71 .

Detailed ways

In order to facilitate the understanding of the present invention by those skilled in the art, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

1 to 5 , a fan provided by the present invention is arranged inside an air duct inner unit of an air conditioner. The fan includes: a mounting plate 1 connected to the air duct inner unit, and a first outlet symmetrically arranged on the mounting plate 1 The air ring 2 and the second air outlet 3, the air supply assembly 4 arranged on the mounting plate 1 for supplying air to the first air outlet 2 and the second air outlet 3; the air supply The assembly 4 is arranged between the first air outlet ring 2 and the second air outlet ring 3; the air supply assembly 4 includes a driving member 41 arranged on the mounting plate 1, and the driving member 41 The connected first axial flow fan blade 42 for supplying air to the first air outlet ring 2, and the second axial flow fan blade connected with the driving member 41 for supplying air to the second air outlet ring channel 3 43. The two air outlet loops of the fan are fixed, and the two axial flow fan blades are driven to rotate only by the driving member 41. Compared with the traditional fan using large centrifugal fan blades to rotate the air, the present invention has stable air outlet and low noise. At the same time, the structural design of the fan of the present invention can also eliminate the volute and sponge used for air diversion in the traditional fan components, so that the structure of the fan components is relatively simple, involves less materials, and saves cost and assembly time.

The driving member 41 is fixedly connected to the mounting plate 1 through a fixing bracket 44 , and the driving member 41 is fixed on the fixing bracket 44 through a clamp 45 . In this embodiment, the driving member 41 is a double-headed shaft motor, and both ends of the main shaft of the double-headed shaft motor face the first air outlet ring 2 and the second air outlet ring 3 respectively.

The first air outlet ring 2 and the second air outlet ring 3 both include an inner ring member 21, an outer ring member 22 sleeved on the inner ring member 21, and disposed on the side wall of the outer ring member 22. The air inlet frame 23 of the first air outlet ring 2 and the air inlet frame 23 of the first air outlet ring 2 and the second air outlet ring The air inlet frame 23 of the duct 3 is detachably connected; the first air outlet frame and the second air outlet frame together form a space for accommodating the air supply assembly 4, and the first axial flow fan blade 42 is located in the In the air inlet frame 23 of the first air outlet ring 2 , the second axial flow fan blades 43 are located in the air inlet frame 23 of the second air outlet ring 3 . The first axial flow fan blade 42 and the second axial flow fan blade 43 are respectively connected to both ends of the main shaft of the double-ended shaft motor. In this embodiment, the inner ring track member 21 and the outer ring track member 22 are generally waist-shaped (that is, similar to the shape of a standard track and field track). During specific implementation, the shapes of the two are not limited to this embodiment. The shape shown in can be other geometric shapes such as circle or ellipse. In this embodiment, the air inlet frame 23 is generally tubular, and in a specific implementation, the outer ring duct 22 and the air inlet frame 23 may be integrally formed. The traditional fan uses centrifugal fan blades. There are many centrifugal fan blades, and the inclination angle of the blades is required to be precise. The injection molding is difficult and the scrap rate is high. Simple molding and low scrap rate.

The upper end of the inner ring channel member 21 is bent toward the outer ring channel member 22 and forms an air inlet 24 for gas circulation with the outer ring channel member 22. The upper end of the outer ring channel member 22 is bent downward and The upper end of the inner ring channel member 21 is wrapped inside, and an air outlet 25 is formed between the upper end portion of the outer ring channel member 22 and the inner ring channel member 21, and the area of the air outlet 25 is smaller than that of the air inlet. 24 area. The side of the outer ring member 22 facing the inner ring member 21 is defined as the inner wall of the outer ring member 22 , and the upper end of the inner ring member 21 is bent toward the inner wall of the outer ring member 22 . According to the principle of static pressure balance, pressurization is achieved by designing the area ratio of the air inlet 24 and the air outlet 25, and using the Coanda surface, the air blown out from the gap of the air outlet 25 is pressurized, the air outlet speed increases, and the high speed is increased. The blown air forms a low pressure area, and the air upstream and around the loop is supplemented under the pressure difference. The supplemented air is much larger than the air intake. After calculation using the CFD numerical simulation software, the air flow will become the original air volume at the same motor speed. After further calculation, under the condition of obtaining the same air volume, the motor speed required by the motor of the fan of the present invention is only 16% of that of the traditional fan component, and the power consumption is low.

The inner ring member 21 is provided with a plurality of connecting members 26 for connecting the outer ring member 22 at the position close to the upper end. The lower bent upper end is just connected to the connecting piece 26 .

The air inlet frame 23 is provided with a plurality of air holes 27 for air circulation. The air holes 27 can be evenly distributed along the outer wall of the air inlet frame 23. The lower side of the air inlet frame 23 is also provided with a drive member 41 to pass through. opening 28.

The first air outlet ring 2 and the second air outlet ring 3 are both connected to the mounting plate 1 through a connecting assembly 5 , and the connecting assembly 5 includes an annular collar 51 connected to the outer ring member 22 . , used to connect the annular collar 51 and the fixing ring 52 of the mounting plate 1 , and the sealing rubber ring 53 arranged between the annular collar 51 and the fixing ring 52 .

The air inlet frame 23 of the first air outlet ring channel 2 and the air inlet frame 23 of the second air outlet ring channel 3 are connected by the snap assembly 6 . There are a plurality of buckle assemblies 6. In specific implementation, male buckles can be provided on the air inlet frame 23 of the first air outlet ring 2, and male buckles can be arranged on the air inlet frame 23 of the second air outlet ring 3, or the reverse can be used. Come and set up.

The positions of the mounting plate 1 corresponding to the first air outlet ring 2 and the second air outlet ring 3 are provided with air ports 11 for air circulation. The shape of the air ports 11 is the same as the first air outlet ring 2 and the second air outlet. Ring Road 3 corresponds.

The present invention also provides an air duct inner unit, including the aforementioned fan. When the fan is installed in the air duct inner unit, the mounting plate 1 is connected to the air duct inner unit housing 7, and the air outlet direction is toward the evaporator 71 side.

The present invention also provides an air conditioner, comprising the aforementioned air duct internal unit.

In the present invention, the first air outlet ring and the second air outlet ring are symmetrically arranged on the mounting plate, and the air is supplied by the axial flow fan blades of the air supply assembly. Compared with the traditional centrifugal fan blades, the air outlet is stable and noisy. At the same time, the structure of the two air outlet rings is set according to the principle of static pressure balance. The air outlet volume is much larger than the air inlet volume delivered by the air supply component. Under the condition of the same air volume demand, the motor speed is significantly lower than that of the traditional fan, which greatly reduces the power consumption. On the other hand, the structure of the fan of the present invention is simpler than that of the traditional fan, the number of components is less, the assembly difficulty is reduced, the assembly efficiency is improved, and the production cost is reduced.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, terms such as "connection" and "fixed" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated; The connection can also be an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Although the present invention is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Accordingly, all such alternatives, modifications and variations are intended to be included within the scope of the appended claims.

Claims (10)

1. The utility model provides a fan, sets up inside the tuber pipe internal unit of air conditioner, its characterized in that, the fan includes: the air supply device comprises a mounting plate connected with an air pipe inner machine, a first air outlet loop and a second air outlet loop which are symmetrically arranged on the mounting plate, and an air supply assembly which is arranged on the mounting plate and used for supplying air to the first air outlet loop and the second air outlet loop; the air supply assembly is arranged between the first air outlet loop and the second air outlet loop; the air supply assembly comprises a driving piece arranged on the mounting plate, a first axial flow fan blade connected with the driving piece and used for supplying air to the first air outlet loop, and a second axial flow fan blade connected with the driving piece and used for supplying air to the second air outlet loop.

2. The fan as claimed in claim 1, wherein the first and second air outlet loops each comprise an inner loop member, an outer loop member disposed on the inner loop member, and an air inlet frame disposed on a side wall of the outer loop member, wherein a space for air to flow is formed between the inner loop member and the outer loop member; the air inlet frame of the first air outlet loop is detachably connected with the air inlet frame of the second air outlet loop; the first air outlet frame and the second air outlet frame jointly form a space for containing the air supply assembly, the first axial flow fan blade is located in the air inlet frame of the first air outlet loop, and the second axial flow fan blade is located in the air inlet frame of the second air outlet loop.

3. The fan as claimed in claim 2, wherein the upper end of the inner ring member is bent toward the outer ring member and forms an air inlet for air to flow through with the outer ring member, the upper end of the outer ring member is bent downward and wraps the upper end of the inner ring member, and forms an air outlet between the upper end of the outer ring member and the inner ring member, and the area of the air outlet is smaller than that of the air inlet; and a plurality of connecting pieces for connecting the outer ring element are arranged at the position of the inner ring element close to the upper end part.

4. The fan as claimed in claim 2, wherein the air inlet frame is provided with a plurality of air holes for air to flow through, and an opening for the driving member to pass through is further provided at a lower side of the air inlet frame.

5. The blower of claim 2, wherein the first outlet duct and the second outlet duct are each connected to the mounting plate by a connection assembly, the connection assembly including an annular collar connected to the outer duct member, a retaining ring for connecting the annular collar to the mounting plate, and a sealing rubber ring disposed between the annular collar and the retaining ring.

6. The fan of claim 2, wherein the air inlet frame of the first air outlet loop and the air inlet frame of the second air outlet loop are connected by a snap assembly.

7. The fan as claimed in claim 1, wherein the mounting plate is provided with air openings for air to flow through at positions corresponding to the first air outlet ring and the second air outlet ring.

8. The fan of claim 1, wherein the driving member is fixedly connected to the mounting plate by a fixing bracket, and the driving member is fixed to the fixing bracket by a clamp; the driving piece is a double-end shaft motor, and two ends of a main shaft of the double-end shaft motor face the first air outlet loop and the second air outlet loop respectively.

9. An air-conditioning machine, characterized by comprising a fan according to any one of claims 1 to 8.

10. An air conditioner characterized by comprising the indoor unit of claim 9.

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