WO2017117699A1

WO2017117699A1 - Axial fan assembly and motor home air-conditioner using same

Info

Publication number: WO2017117699A1
Application number: PCT/CN2016/000715
Authority: WO
Inventors: 楚人震; 朱建国; 常广青
Original assignee: 宁波宏都电器有限公司
Priority date: 2016-01-07
Filing date: 2016-12-28
Publication date: 2017-07-13
Also published as: EP3401546A1; AU2016385149B2; EP3401546A4; AU2016385149A1

Abstract

Disclosed are an axial fan assembly and a motor home air-conditioner using same. The motor home air-conditioner comprises an air-conditioner body (1). A heat exchanging system, a central air-inlet channel (2) and a peripheral air-outlet channel (3) are arranged in the air-conditioner body (1). The heat exchanging system comprises an evaporator assembly (4) distributed in a ring shape and an axial fan assembly (5) located within the evaporator assembly (4). The axial fan assembly (5) comprises an axial fan (6) and a skeleton-type blast ring (7). The axial fan (6) is mounted within the skeleton-type blast ring (7). The skeleton-type blast ring (7) comprises a drainage pressurized region (71) and an airflow diffusion region (72) for air to flow out. The airflow diffusion region (72) comprises a circumferential air-outlet region (721) and an axial air-outlet region (722). The present axial fan assembly not only meets the requirement of strength in installation, but also changes the direction of airflow blown by the axial fan to achieve the blowing effect of mixed wind flow.

Description

Axial fan assembly and RV air conditioner using the same

Technical field

The invention relates to a fan assembly and a room air conditioner, in particular to an axial fan assembly and a motor vehicle air conditioner using the same.

Background technique

RV air conditioners include outdoor units, indoor units, and access air ducts. The outdoor unit includes an air conditioning system consisting of a condenser, an evaporator, a compressor, an evaporating fan, a condensing fan, and the like. The indoor unit is mainly composed of a panel assembly and a duct bracket. The panel assembly is provided with an inlet and outlet port, and the inlet and outlet ducts are installed between the duct bracket and the outdoor unit. The air inside the car is sent to the air conditioner of the RV through the air inlet and outlet passages, and then enters the vehicle after being exchanged with the heat of the evaporator, thereby functioning as air circulation and adjusting the temperature of the indoor air.

The evaporating fan or the condensing fan can be divided into a centrifugal fan and an axial fan. The centrifugal fan is in operation, the airflow enters the blade space from the axial direction of the fan, and then rotates with the impeller under the driving of the impeller; on the other hand, under the action of inertia The energy is increased, and the airflow leaves the impeller in a radial direction, and the centrifugal force is generated to perform work, thereby discharging the airflow from the peripheral side of the impeller. The axial flow fan is such that the airflow flows from the axial end of the fan into the impeller and flows out along the other end of the fan shaft. The significant difference between the two is that the centrifugal fan changes the flow direction of the medium in the air duct, and the axial flow fan does not change the flow direction of the medium in the air duct. Compared with the axial flow fan, the centrifugal fan has relatively complicated installation and structure, relatively large weight and high cost. However, the traditional axial flow fan determines the flow direction of the inlet and outlet due to its structure, which limits its application.

Summary of the invention

The technical problem to be solved by the present invention is to provide an axial flow fan assembly and a motor vehicle air conditioner using the axial flow fan assembly. The fan assembly axially enters the air and adopts axial and circumferential mixed air to form a unique mixed flow type. Wind mode expands the application field of axial fans;

The RV air conditioner enters the air in the direction of the central axis of the axial fan, and the airflow fan mixes out the wind and flows through the evaporator component at the periphery of the fan, and then enters into the cabin through the air outlet passage.

The technical solution adopted by the present invention to solve the above technical problem is: an axial flow fan assembly comprising an axial flow fan and a skeleton type wind ring, wherein the axial flow fan is installed in the skeleton type wind ring, the skeleton type The air ring includes a drainage pressurized region and a gas flow diffusion region for the outflow, the airflow diffusion region is located downstream of the drainage pressurized region, and the airflow diffusion region includes a circumferential air outlet region and an axial air outlet region.

According to a further preferred embodiment of the present invention, the drainage and pressurization region is surrounded by a closed annular body, and the circumferential air outlet region is an open side air outlet region located downstream of the closed annular body. The axial air outlet region is an axial air outlet adjacent to the side air outlet region.

According to a further preferred embodiment of the present invention, the skeleton type wind ring comprises a substrate on which an axial flow fan is mounted, and the closed annular body and the substrate are connected by a longitudinally connected longitudinally connected column, and the circumferential air outlet area is distributed in the closed Between the annular body and the substrate, the axial air outlet region is distributed on the substrate.

According to a further preferred embodiment of the present invention, the axial flow fan comprises a driver, a rotating impeller and a base, the base is mounted at the center of the substrate, the rotating impeller is located between the base and the driver, and the axial air outlet region is distributed in a peripheral region of the substrate.

According to a further preferred embodiment of the present invention, the height of the closed annular body is 1/5 to 1/2 of the height of the skeleton type wind ring.

According to a further preferred embodiment of the present invention, the substrate is provided with a lateral connecting post connected to the upper end of the longitudinal connecting post.

According to a further preferred embodiment of the present invention, the periphery of the laterally connected column of the substrate is provided with segmented reinforcing ribs. The segmented ribs increase the overall strength of the skeletal wind ring while ensuring normal axial and circumferential outflow of the axial flow motor.

A further preferred embodiment of the invention is the injection molding of the skeleton type wind ring.

A RV air conditioner using an axial flow fan assembly, including an air conditioning main body, wherein the air conditioning main body has a heat exchange system, a central air inlet passage, and a peripheral side air outlet passage, and the heat exchange system includes an annular distribution or a segmented structure. An evaporator assembly and an axial fan assembly located within the evaporator assembly, the axial fan assembly including an axial fan and a skeleton wind ring, the axial fan being mounted in the skeleton wind circle, the skeleton The air coil includes a drainage pressurized region and a gas flow diffusion region for the outflow, and the airflow diffusion region includes a circumferential air outlet region and an axial air outlet region.

According to a further preferred embodiment of the present invention, the air conditioning main body includes an evaporator volute that is disposed outside the evaporator assembly, the evaporator volute includes a side assembly and a top cover, and the top cover is located at the evaporator assembly Above the side assembly, located on the outside of the evaporator assembly, forms a separate and enclosed heat exchange space within the evaporator volute.

According to a further preferred embodiment of the present invention, the air conditioner main body includes a chassis on which a water collecting tray is mounted, an evaporator assembly is mounted on the water collecting tray, and the evaporator volute cover is disposed on the chassis. The water collecting tray has an air inlet hole, and the water collecting tray is provided with a concave step for the rotating impeller of the axial flow fan to extend.

According to a further preferred embodiment of the present invention, the evaporator volute is made of a polymer composite material having thermal insulation properties.

According to a further preferred embodiment of the present invention, the drainage and pressurization region is surrounded by a closed annular body, and the circumferential air outlet region is an open side air outlet region located downstream of the closed annular body. The axial air outlet zone The domain is an axial air outlet adjacent to the side air outlet area.

According to a further preferred embodiment of the present invention, the substrate is provided with a lateral connecting column connected to the upper end of the longitudinal connecting column, and the periphery of the horizontal connecting column of the substrate is provided with a segmented reinforcing rib.

According to a further preferred embodiment of the present invention, the air conditioning main body includes a panel assembly, and the air duct assembly is disposed between the panel assembly and the air inlet hole of the water trap. The inner side of the air duct assembly is a central air inlet passage. The side outlet passage is located outside the duct assembly.

According to a further preferred embodiment of the present invention, the cross section of the central air inlet passage and the peripheral side air outlet passage has an R-like structure.

Compared with the prior art, the invention has the advantages that the fan assembly is subjected to axial supercharged air after axial air inlet, and the axial and circumferential mixed air is used to form a unique mixed flow air outlet mode, which expands the axial flow fan. Application area. The wind ring adopts the skeleton support structure, which not only satisfies the strength requirement of the axial flow fan installation, but also changes the air flow direction of the axial flow fan through the drainage under the wind ring and the upper diffusion structure, and the axial flow fan not only has a vertical direction. The wind is out, and it has a wind in the direction of the surrounding, forming a mixed air blowing effect. Breaking through the traditional way of installing axial fans can only suck and wind in the same direction.

When the air conditioner is working, the air inside the vehicle enters into the air-conditioning main body from the central air inlet passage, and the axial flow fan assembly is subjected to the axial pressure and the circumferential airflow to form a mixed flow type airflow after being axially introduced into the air. After the heat exchange of the evaporator assembly, the air outlet channel is blown out from the peripheral side to achieve the purpose of adjusting the temperature of the air inside the vehicle. The wind ring adopts the skeleton support structure, which not only satisfies the strength requirement of the axial flow fan installation, but also changes the air flow direction of the axial flow fan through the drainage under the wind ring and the upper diffusion structure, and the axial flow fan not only has a vertical direction. The wind is out, and it has a wind in the direction of the surrounding, forming a mixed air blowing effect. Breaking through the traditional way of installing axial fans can only suck and wind in the same direction.

DRAWINGS

Figure 1 is a perspective view 1 of the axial flow fan assembly of the present invention;

Figure 2 is a perspective view 2 of the axial flow fan assembly of the present invention;

Figure 3 is a perspective view of a skeleton type wind ring of the axial flow fan assembly of the present invention;

4 is a structural view of an axial flow fan of an axial flow fan assembly according to the present invention;

Figure 5 is a perspective view showing the assembly of the axial flow fan assembly and the water tray in the first embodiment of the present invention;

Figure 6 is a cross-sectional view showing the assembly of the axial fan assembly and the water tray in the first embodiment of the present invention;

Figure 7 is a perspective view showing the assembly of the axial flow fan assembly and the water tray in the second embodiment of the present invention;

FIG. 8 is a structural diagram of an axial flow fan assembly according to Embodiment 2 of the present invention applied to an air conditioner of a motor home.

Figure 9 is a partial structural view of the air conditioner of the motor home of the present invention;

Figure 10 is a cross-sectional structural view of the air conditioner of the motor home of the present invention;

Figure 11 is a partial exploded view of the air conditioner of the motor home of the present invention.

detailed description

The invention will be further described in detail below with reference to the embodiments of the drawings.

Embodiment 1: As shown in FIG. 9, FIG. 10 and FIG. 11, a motor vehicle air conditioner using an axial flow fan assembly includes an air conditioning main body 1. The air conditioning main body 1 has a heat exchange system, a central air inlet passage 2, and a peripheral side air passage passage. 3. The heat exchange system comprises an annular distribution evaporator assembly 4 and an axial fan assembly 5 located within the evaporator assembly 4, the axial flow fan assembly 5 comprising an axial flow fan 6 and a skeletal wind ring 7, the axial flow fan 6 being mounted In the skeleton type wind ring 7, the skeleton type wind ring 7 includes a drainage pressurization region 71 and an airflow diffusion region 72 for air outlet, and the airflow diffusion region 72 includes a circumferential air outlet region 721 and an axial air outlet region 722. The axial flow fan assembly 5 is located in the annularly distributed evaporator assembly 4, and the space inside the air conditioner is fully utilized, which is advantageous for reducing the overall height of the air conditioner under the premise of efficient heat exchange. The evaporator assembly 4 can be distributed continuously on the water tray, or it can be distributed in sections on the water tray. As shown in FIG. 10, the cross section of the center inlet passage 2 and the peripheral side outlet passage 3 has an R-like configuration.

Since the axial flow fan 6 is mounted on the independent skeleton type wind ring 7, compared with the conventional axial flow fan 6 installed in the air inlet hole 91 of the water storage tray 9, the axial flow fan of the present invention is provided as long as the internal space permits The diameter of 6 can be made as large as possible, and the air volume is large. Under the same power conditions, the noise of the motor is relatively small.

As shown in FIG. 11, the air conditioning body includes an evaporator volute 8 that is disposed outside of the evaporator assembly 4. The evaporator volute 8 includes a side assembly 81 and a top cover 82 that is located above the evaporator assembly 4, side The edge assembly 81 is located outside of the evaporator assembly 4 to form a separate and enclosed heat exchange space within the evaporator volute 8. The axial airflow of the axial fan 5 is blocked by the top cover of the evaporator volute 8 and flows toward the evaporator assembly 4 together with the circumferential airflow, and the axial flow wind The fan 5's air outlet is more concentrated in the side air outlet, and the heat exchange efficiency is higher.

As shown in FIGS. 9 to 11, the air conditioner main body 1 includes a chassis 10 on which a water collecting tray 9 is mounted, the evaporator unit 4 is mounted on the water collecting tray 9, and the evaporator volute 8 is placed on the chassis 10, and the water collecting tray 9 is mounted. There is an air inlet hole 91 on which the recessed step 11 into which the rotary impeller 62 of the axial fan 6 projects is inserted. As shown in FIG. 5 and FIG. 6, the side wall 12 of the recessed step 11 also exerts an effect of introducing and supercharging the intake air of the axial flow fan 5, and increases the outlet air power of the axial flow fan 5.

The evaporator volute 8 is made of a polymer composite material having heat insulating properties. The evaporator volute 8 has good thermal insulation properties.

As shown in FIG. 1 and FIG. 2, the drainage pressurized region 71 is surrounded by a closed annular body 73, and the circumferential air outlet region 721 is an open side air outlet region located downstream of the closed annular body 71. The axial air outlet region 722 is an axial air outlet adjacent to the side air outlet region 721.

As shown in FIG. 3, the skeleton type wind ring 7 includes a substrate 12 on which the axial flow fan 6 is mounted, and the closed annular body 73 and the substrate 12 are connected by a longitudinally distributed longitudinal connecting column 13 and distributed in the circumferential air outlet region 721. Between the closed annular body 73 and the substrate 12, the axial air outlet region 722 is distributed over the substrate 12. The skeleton type wind ring 7 is injection molded.

As shown in FIG. 4, the axial fan 6 includes a driver 61, a rotating impeller 62 and a base 63. The base 63 is mounted at the center of the substrate 12. The rotating impeller 62 is located between the base 63 and the driver 61. 722 is distributed in a peripheral region of the substrate 12.

As shown in Figs. 1 and 2, the height of the closed annular body 73 is 1/5 or 1/3 or 1/2 of the height of the skeleton type wind ring 7. At a motor speed of 1250 rpm, the overall height of the skeleton type wind ring is 70 mm. If the side of the skeleton type wind ring 7 is fully open (no closed ring body), the air volume is only 470 cubic meters per hour, in the skeleton type. When the side of the wind ring 7 is fully closed, the air volume is 424 cubic meters per hour, and when the height of the closed annular body 73 is 25 mm, the air volume is 514 cubic meters per hour. The experimental parameters are shown in the following table:

The substrate 12 is provided with a lateral connecting post 14 connected to the upper end of the longitudinal connecting post 13, and the lateral connection of the substrate 12 A segmented rib 15 is provided on the periphery of the column 14. The segmented ribs 15 increase the overall strength of the skeletal wind ring 7, while ensuring normal axial and circumferential outflow of the axial flow motor.

As shown in FIG. 11, the air conditioning main body 1 includes a panel assembly 16, and a duct assembly 17 is disposed between the panel assembly 16 and the air inlet hole 91 of the water trapping disc 9. The inner side of the air duct assembly 17 is a central air inlet passage 2, and the circumference The side air outlet passage 3 is located outside the air duct assembly 17. The air duct assembly 17 includes a duct 18, a duct ring 19 and a duct bracket 20. The upper end of the duct 18 is connected to the bracket on the water trap 9, and the duct 18 is connected to the duct bracket 20 through the duct ring 19, the duct The bracket 20 is mounted on the panel assembly 16.

The utility model adopts a large-diameter axial flow fan 6 to supply air, low noise and large air volume; the chassis 10, the evaporator water storage tray 9 and the evaporator volute casing 8 cooperate to form an independent cooling and heating exchange space, and the air duct bracket 20 The air duct ring 19, the air duct 18 and the panel assembly 16 isolate and circulate the air after heat exchange in the vehicle compartment. When the axial fan 6 rotates to generate a negative pressure, the air in the cabin is sucked through the panel assembly 16 and the air duct 18 by the chassis. 10. The heat exchange space formed by the evaporator volute 8 passes through the heat exchange of the annular evaporator assembly 4, and is sent to the passenger compartment through the air duct 18 and the panel assembly 16 on all sides, and the entire air flow duct is formed. R-channel to achieve the purpose of regulating air temperature. The evaporator volute 8 is made of high-strength insulation structure, directly formed by polymer composite material, and its thermal insulation performance is excellent. The annular distribution of the evaporator assembly 4 and the axial flow fan 6 are horizontally placed to make full use of the internal space of the air conditioner. Under the premise of heat exchange, the height of the air conditioner is reduced.

Embodiment 2: As shown in FIG. 5 and FIG. 6, the axial flow fan 6 of Embodiment 1 is hoisted on the skeleton type wind ring 7, and the airflow diffusion area 72 on the skeleton type wind ring 7 is located above the airflow pressure increasing area 71. . As shown in FIG. 7 and FIG. 8 , the axial flow fan assembly is reversely installed in the air conditioner of the RV. Specifically, the axial flow fan 5 is located on the skeleton wind ring 7 in Embodiment 2, and the airflow on the skeleton wind ring 7 is diffused. The region 72 is located below the airflow boosting zone 71.

The axial flow fan assembly provided by the present invention and the air conditioner air conditioner using the axial flow fan assembly are described in detail. The principle and embodiment of the present invention are described in the following. The description of the above embodiment is only used for the description. Help understand the invention and the core ideas. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims

An axial flow fan assembly characterized by comprising an axial flow fan and a skeleton type wind turbine, wherein the axial flow fan is installed in the skeleton type wind ring, the skeleton type wind ring comprises a drainage pressurized area and is used for The airflow diffusion region of the airflow, the airflow diffusion region is located downstream of the drainage pressurized region, and the airflow diffusion region includes a circumferential air outlet region and an axial air outlet region.
The axial flow fan assembly according to claim 1 wherein said drainage plenum is enclosed by a closed annular body, said circumferentially venting region being open downstream of the closed annular body. The side air outlet region is an axial air outlet adjacent to the side air outlet region.
The axial flow fan assembly according to claim 2, wherein the skeleton type wind ring comprises a substrate on which an axial flow fan is mounted, and the closed annular body and the substrate are connected by a longitudinally distributed longitudinal connecting column, and the circumference is connected. The air outlet region is distributed between the closed annular body and the substrate, and the axial air outlet region is distributed on the substrate.
The axial flow fan assembly according to claim 3, wherein the axial flow fan comprises a driver, a rotating impeller and a base, the base is mounted at the center of the substrate, the rotating impeller is located between the base and the driver, and the axial air outlet region Distributed in the peripheral area of the substrate.
The axial fan assembly according to claim 2, wherein the height of the closed annular body is 1/5 to 1/2 of the height of the skeleton type wind ring.
The axial flow fan assembly according to claim 3, wherein the substrate is provided with a transverse connecting post connected to the upper end of the longitudinal connecting post.
The axial flow fan assembly according to claim 6, wherein the periphery of the laterally connected column of the substrate is provided with a segmented reinforcing rib.
The axial flow fan assembly of claim 1 wherein said skeletal wind ring is injection molded.
A RV air conditioner using an axial flow fan assembly, including an air conditioning main body, wherein the air conditioning main body has a heat exchange system, a central air inlet passage, and a peripheral side air outlet passage, wherein the heat exchange system includes an annular distribution of evaporation And an axial fan assembly located within the evaporator assembly, the axial fan assembly including an axial fan and a skeletal wind ring, the axial fan being mounted within the skeletal wind ring, the skeleton The air ring includes a drainage pressurized region and an airflow diffusion region for the wind, and the airflow diffusion region includes a circumferential air outlet region and an axial air outlet region.
A room air conditioner using an axial flow fan assembly according to claim 9, wherein said air conditioner body comprises an evaporator volute that is disposed outside the evaporator assembly, said evaporator volute including a side assembly and a top Cover, said top A cover is located above the evaporator assembly, the side assembly being located outside of the evaporator assembly to form a separate and enclosed heat exchange space within the evaporator volute.
A motor vehicle air conditioner using an axial flow fan assembly according to claim 10, wherein said air conditioning main body comprises a chassis on which a water storage tray is mounted, and an evaporator assembly is mounted on said water storage tray, said evaporator The volute cover is disposed on the chassis, and the water storage tray has an air inlet hole, and the water storage tray is provided with a concave step for the rotary impeller of the axial flow fan to extend.
The RV air conditioner using the axial flow fan assembly according to claim 10, wherein the evaporator volute is made of a polymer composite material having heat insulating properties.
The RV air conditioner using the axial flow fan assembly according to claim 9, wherein said drainage pressurized region is surrounded by a closed annular body, and said circumferential air outlet region is located in a closed annular body. The downstream side is an open side air outlet area, and the axial air outlet area is an axial air outlet adjacent to the side air outlet area.
The RV air conditioner using the axial flow fan assembly according to claim 13, wherein the skeleton type wind ring comprises a substrate on which an axial flow fan is mounted, and the closed annular body and the substrate are longitudinally connected by an annular distribution. The column is connected, and the circumferential air outlet region is distributed between the closed annular body and the substrate, and the axial air outlet region is distributed on the substrate.
The RV air conditioner using the axial flow fan assembly according to claim 14, wherein the axial flow fan comprises a driver, a rotating impeller and a base, the base is mounted at a center of the substrate, and the rotating impeller is located between the base and the driver, the shaft The windward area is distributed in the peripheral area of the substrate.
The RV air conditioner using the axial flow fan assembly according to claim 13, wherein the height of the closed annular body is 1/5 to 1/2 of the height of the skeleton type wind ring.
The RV air conditioner using the axial flow fan assembly according to claim 14, wherein the substrate is provided with a lateral connecting column connected to the upper end of the longitudinal connecting column, and the periphery of the horizontal connecting column of the substrate is provided with a segmented reinforcing rib.
The RV air conditioner using the axial flow fan assembly according to claim 11, wherein the air conditioning main body comprises a panel assembly, and the air duct assembly is arranged between the panel assembly and the air inlet hole of the water collecting tray. The inner side of the track assembly is a central air inlet passage, and the peripheral side air outlet passage is located outside the air duct assembly.
The RV air conditioner using the axial flow fan assembly according to claim 9, wherein the central air inlet passage and the peripheral side air outlet passage have an R-like structure.