A bionic axial flow fan, an outdoor unit of an air conditioner, and a heat dissipation method

Abstract

The present invention discloses a bionic axial flow fan, an outdoor unit of an air conditioner and a heat dissipation method, which includes a fan body having a plurality of fan blades, and the fan blades have blade edges; a water scooping structure including a plurality of water scooping spines, the plurality of water scooping spines are arranged on the blade edges and are inclined relative to the blade edges, and the cross-section of the water scooping spines is gradually reduced from the end close to the blade edge to the end far from the blade edge; a water splashing ring connected to the fan body and arranged on the periphery of the plurality of water scooping spines; in this application, a plurality of water scooping spines are used to scoop up the condensed water and throw it to the inner side of the water splashing ring, and the water splashing ring is used to break up the condensed water into water mist, and under the action of the wind, it is blown to the central area of the condenser to realize the heat dissipation and cooling of the condenser; moreover, this application adopts bionic design to simulate the fine-tooth structure at the edge of bird feathers, so that the fan body can reduce the wind noise during rotation and realize silent operation.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly relates to a bionic axial flow fan, an outdoor unit of an air conditioner, and a heat dissipation method. Background Art

[0002] An air conditioner generally consists of two parts: an outdoor unit and an indoor unit. Among them, the outdoor unit generally includes a compressor, a condenser, and an axial flow fan. By means of the axial flow fan, outdoor air is inhaled and blown towards the condenser to achieve the cooling of the condenser. In the prior art, a water scooping ring is arranged around the outer periphery of the axial flow fan. By means of the water scooping ring, the condensed water on the chassis of the outdoor unit is thrown onto the condenser to reduce the temperature of the condenser, and thus the heat exchange efficiency can be improved. However, when the water scooping ring throws water in the prior art, the condensed water splashes everywhere, and the water-throwing area is uneven, resulting in a large temperature difference at each position on the condenser, and the heat dissipation effect is not ideal. Summary of the Invention

[0003] The purpose of the present invention is to provide a bionic axial flow fan, an outdoor unit of an air conditioner, and a heat dissipation method, aiming to solve the technical problem that the heat dissipation effect of the outdoor unit of the air conditioner in the prior art is not ideal.

[0004] In order to achieve the above purpose, the technical solution of the present invention is as follows:

[0005] The present application provides a bionic axial flow fan, which includes:

[0006] A fan body, which has a plurality of fan blades, and the fan blades have blade edges;

[0007] A water scooping structure, which includes a plurality of water scooping barbs. The plurality of water scooping barbs are arranged on the blade edges and are inclined relative to the blade edges. The cross-section of the water scooping barb gradually decreases from the end close to the blade edge to the end far from the blade edge;

[0008] A water spraying ring, which is connected to the fan body and is arranged outside the plurality of water scooping barbs.

[0009] Compared with the prior art, the present application arranges a water scooping structure at the blade edges of the fan blades. The condensed water is scooped up by a plurality of water scooping barbs and thrown to the inner side of the water spraying ring. With the help of the water spraying ring, the condensed water is broken into water mist and blown to the central area of the condenser under the action of the wind, so as to achieve the heat dissipation and cooling of the condenser; moreover, the water scooping structure of the present application adopts a bionic design, simulating the fine-tooth structure at the edge of bird feathers, so that the fan body can reduce the wind noise during rotation, achieve silent operation, and at the same time, the condensed water of the water scooping structure can be evenly thrown away by a plurality of water scooping barbs, making it easier to break up the condensed water and enhancing the heat dissipation effect.

[0010] In a preferred embodiment, a water scooping structure is further provided with a water inlet and a diversion channel, and the diversion channel is arranged in the water scooping structure along the extending direction of the blade edge;

[0011] A plurality of the water scooping barbs are provided with water outlet holes, and the water outlet holes are communicated with the water inlet through the diversion channel.

[0012] In a preferred embodiment, the water outlet holes are arranged at one end of the water scooping barbs far away from the blade edge.

[0013] In a preferred embodiment, the cross-section of the diversion channel is gradually reduced from the leading edge of the blade towards the trailing edge of the blade.

[0014] In a preferred embodiment, the fan blade further has a leading edge and a trailing edge of the blade, and the water inlet is arranged close to the leading edge of the blade.

[0015] In a preferred embodiment, the water inlet is an open mouth, and the opening direction is set towards the hub of the fan body.

[0016] The present application provides an outdoor unit of an air conditioner, which includes the bionic axial flow fan as described above; and further includes: a driving motor, which is drivingly connected to the bionic axial flow fan.

[0017] In a preferred embodiment, it further includes: a condenser; a water receiving tray, which is arranged below the bionic axial flow fan; a lifting device, which is drivingly connected to the driving motor; a temperature sensor, which is used to obtain the temperature of a preset measuring point on the condenser; a control device, which is electrically connected to the temperature sensor and is used to receive the temperature signal of the temperature sensor, process and generate a heat dissipation working signal or a normal working signal; the control device is further electrically connected to the lifting device and is used to perform lifting work according to the heat dissipation working signal or the normal working signal; the control device is further electrically connected to the driving motor and is used to perform variable speed work according to the heat dissipation working signal or the normal working signal.

[0018] The present application provides a heat dissipation method for an outdoor unit of an air conditioner, which includes:

[0019] Step 1: Obtain the temperature of a preset measuring point on the condenser to obtain a temperature signal;

[0020] Step 2: Compare the temperature signal in Step 1 with a preset threshold value to generate a heat dissipation working signal or a normal working signal;

[0021] Step 3: Control the lifting device to perform lifting work according to the heat dissipation working signal or the normal working signal, and control the driving motor to perform variable speed work according to the heat dissipation working signal or the normal working signal.

[0022] In a preferred embodiment, step 2 is specifically as follows: if the temperature signal is lower than a preset threshold, a normal operation signal is generated; otherwise, a heat dissipation operation signal is generated.

[0023] For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0024] Figure 1 is a schematic diagram of a bionic axial flow fan;

[0025] Figure 2 is a schematic diagram of the connection of each component of the outdoor unit of an air conditioner.

[0026] Description of the Reference Numerals:

[0027] 1 fan body, 11 fan blades, 111 blade edges, 112 blade leading edges, 113 blade trailing edges, 2 water scooping structure, 21 water scooping barbs, 22 water inlet, 23 diversion channel, 24 water outlet holes, 3 water pumping ring, 4 drive motor, 5 lifting device, 6 temperature sensor, 7 control device. Detailed Embodiments

[0028] To better elaborate the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the embodiments of the present application.

[0030] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0031] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] In addition, in the description of the present application, unless otherwise specified, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0033] Combined with Figure 1 and Figure 2 As shown, the present application provides a bionic axial flow fan, which includes: a fan body 1 having a plurality of fan blades 11, and the fan blades 11 have blade edges 111; a water scooping structure 2 including a water scooping ring 3 and a plurality of water scooping spines 21, wherein the plurality of water scooping spines 21 are arranged on the blade edge 111 and are inclined relative to the blade edge 111, and the cross-section of the water scooping spine 21 gradually decreases from the end close to the blade edge 111 to the end away from the blade edge 111; the water scooping ring 3 is connected to the fan body 1 and is arranged outside the plurality of water scooping spines 21.

[0034] Compared with the prior art, the present application provides a water scooping structure 2 at the blade edge 111 of the fan blade 11. The plurality of water scooping spines 21 scoop up the condensed water and throw it to the inner side of the water scooping ring 3. After the condensed water hits the water scooping ring 3, the water scooping ring 3 breaks up the condensed water into water mist, and under the action of the wind, it is blown to the central area of the condenser to achieve heat dissipation and cooling of the condenser; moreover, the water scooping structure 2 of the present application adopts a bionic design, simulating the fine-tooth structure at the edge of bird feathers, so that the fan body 1 can reduce the wind noise during rotation, achieve silent operation, and at the same time, the condensed water of the water scooping structure 2 can be evenly thrown away by the plurality of water scooping spines 21, making it easier to break up the condensed water and enhancing the heat dissipation effect.

[0035] In one embodiment, the skimming structure 2 is further provided with a water inlet 22 and a diversion channel 23, and the diversion channel 23 is arranged in the skimming structure 2 along the extension direction of the blade edge 111; the plurality of the skimming strips 21 are provided with water outlet holes 24, and the water outlet holes 24 are connected to the water inlet 22 through the diversion channel 23.

[0036] In order to further increase the amount of condensed water skimmed and better disperse the condensed water, when the fan body 1 rotates and the fan blades 11 come into contact with the condensed water in the water receiving tray, the condensed water can flow into the diversion channel 23 through the water inlet 22, and be diverted to the inside of the sparging strip 21 under the action of centrifugal force, and be ejected to the inside of the water ring 3 through the water outlet 24 in the form of fine water droplets. In the above manner, the present application allows the condensed water to be thrown onto the water ring 3 not only through the surface of the sparging strip 21 but also through the inside of the sparging strip 21, thereby increasing the amount of skimming; moreover, the condensed water ejected through the water outlet 24 appears in the form of fine water droplets, which are more easily dispersed into water mist.

[0037] Furthermore, the water outlet hole 24 is arranged at one end of the skein strip 21 away from the blade edge 111. The present application ensures that the condensed water is linearly ejected onto the water ring 3 through the water outlet hole 24 through the above method.

[0038] Furthermore, the cross-section of the diverter channel 23 is gradually reduced from the leading edge 112 of the blade toward the trailing edge 113 of the blade. The present application can accelerate the speed at which the condensed water flows from the front end of the diverter channel 23 (the side close to the water inlet 22) to the rear end of the diverter channel 23 (the side away from the water inlet 22) through the above-mentioned method, and can quickly fill the diverter channel 23, thereby avoiding the situation where the condensed water is only concentrated on the rear end of the skewer strips 21 while the front end of the skewer strips 21 has no water, so that the condensed water is evenly hit on the water ring 3.

[0039] Furthermore, the fan blade 11 also has a blade leading edge 112 and a blade trailing edge 113 , and the water inlet 22 is arranged close to the blade leading edge 112 , so that the condensed water can better enter the diversion channel 23 through the water inlet 22 as the fan body 1 rotates.

[0040] Preferably, the water inlet 22 is open, and the opening direction is set toward the hub of the fan body 1. The present application increases the water inlet area of ​​the water inlet 22 in disguise by designing the water inlet 22 to be open, so that more condensed water can enter the diversion channel 23 in a short time.

[0041] In one embodiment, the water skimming structure 2 is connected to the fan blade 11 via an adhesive.

[0042] The present application provides an outdoor air conditioner, which includes the bionic axial flow fan as described above; it further includes: a driving motor 4, which is drivingly connected to the bionic axial flow fan. In the present application, the driving motor 4 drives the bionic axial flow fan to rotate, picks up the condensed water and throws it to the inner side of the water throwing ring 3. After the condensed water hits the water throwing ring 3, the water throwing ring 3 is used to break up the condensed water into water mist, and under the action of the wind, it is blown to the central area of the condenser, realizing the heat dissipation and cooling of the condenser and improving the heat exchange effect of the condenser.

[0043] In one embodiment, the outdoor air conditioner further includes: a condenser; a water receiving tray, which is arranged below the bionic axial flow fan; a lifting device 5, which is drivingly connected to the driving motor 4; a temperature sensor 6, which is used to obtain the temperature of preset points on the condenser; a control device 7, which is electrically connected to the temperature sensor 6 and is used to receive the temperature signal of the temperature sensor 6, process and generate a heat dissipation working signal or a normal working signal; the control device 7 is further electrically connected to the lifting device 5 and is used to perform lifting work according to the heat dissipation working signal or the normal working signal; the control device 7 is further electrically connected to the driving motor 4 and is used to perform variable speed work according to the heat dissipation working signal or the normal working signal.

[0044] Since the cooling temperature of the air conditioner is different, the surface temperature of the condenser will also be different accordingly. In order to better respond to energy conservation and emission reduction, the present application controls the rotation speed and height of the driving motor 4 according to the different surface temperatures of the condenser, so as to dissipate heat and cool the condenser on the premise of meeting energy conservation. Specifically, the water receiving tray is filled with condensed water for water picking operation; multiple temperature detection points are pre-arranged on the condenser of the outdoor air conditioner as required, and the temperature sensor 6 is used to detect the temperature of these preset temperature detection points, obtain the current temperature and send the temperature signal to the control device 7; after receiving the temperature signal, the control device 7 analyzes and processes it, generates a heat dissipation working signal or a normal working signal, and sends the heat dissipation working signal or the normal working signal to the lifting device 5 and the driving motor 4;

[0045] When the temperature of the condenser is higher than the preset threshold, the control device 7 generates a heat dissipation working signal. At this time, the lifting device 5 drives the driving motor 4 to move downward, so that the water picking structure 2 on the fan blade 11 can contact the condensed water, pick up the condensed water and form water mist under the action of the water throwing ring 3, and thus be blown to the condenser under the action of the wind to realize heat dissipation and cooling; in addition, the driving motor 4 will also increase its power to achieve high-speed rotation, so as to dissipate heat from the condenser faster.

[0046] When the temperature of the condenser is lower than the preset threshold, the control device 7 generates a normal working signal. At this time, the lifting device 5 drives the driving motor 4 to move upward, so that the fan body 1 is separated from the condensed water, and the water scooping structure 2 on the fan blade 11 does not contact the condensed water. Moreover, the driving motor 4 will also reduce its power and rotate at a low speed, which can ensure the heat dissipation effect while achieving energy conservation and emission reduction.

[0047] Moreover, within a period of time after the lifting device 5 drives the driving motor 4 to move upward in this application, since there is still some remaining water in the diversion channel 23 and the water scooping barbs 21, at this time, even if the water scooping barbs 21 no longer contact the condensed water, the remaining water in the diversion channel 23 and the water scooping barbs 21 will continue to be ejected to the inner side of the water spraying ring 3 under the action of centrifugal force, and thus continue to be blown onto the condenser in the form of water mist for heat dissipation until the remaining water is completely ejected.

[0048] This application provides a heat dissipation method for an outdoor unit of an air conditioner, which includes:

[0049] Step 1: Obtain the preset distribution point temperature on the condenser to obtain a temperature signal;

[0050] Step 2: Compare the temperature signal in Step 1 with the preset threshold to generate a heat dissipation working signal or a normal working signal;

[0051] Step 3: Control the lifting device to perform lifting work according to the heat dissipation working signal or the normal working signal, and control the driving motor to perform variable speed work according to the heat dissipation working signal or the normal working signal.

[0052] Specifically, a plurality of temperature detection points are pre-arranged on the condenser of the outdoor unit of the air conditioner as required, and temperature sensors are used to detect the temperature of the above-mentioned preset temperature detection points, obtain the current temperature and send the temperature signal to the control device; after receiving the temperature signal, the control device performs analysis and processing, generates a heat dissipation working signal or a normal working signal, and sends the heat dissipation working signal or the normal working signal to the lifting device and the driving motor;

[0053] When the temperature of the condenser is higher than the preset threshold, the control device generates a heat dissipation working signal. At this time, the lifting device drives the driving motor to move downward, so that the water scooping structure on the fan blade can contact the condensed water, scoop up the condensed water and form water mist under the action of the water spraying ring, and thus be blown onto the condenser under the action of the wind to achieve heat dissipation and cooling; in addition, the driving motor will also increase its power to achieve high-speed rotation, so as to dissipate heat from the condenser faster.

[0054] When the temperature of the condenser is lower than the preset threshold, the control device generates a normal working signal. At this time, the lifting device drives the driving motor to move upward, so that the fan body is separated from the condensed water, and the water scooping structure on the fan blade does not contact the condensed water. Moreover, the driving motor will also reduce its power and rotate at a low speed, which can ensure the heat dissipation effect while achieving energy conservation and emission reduction.

[0055] Moreover, within a period of time after the lifting device drives the driving motor to move upward in this application, since there is still some remaining water in the diversion channel and the water scooping barbs, at this time, even if the water scooping barbs no longer contact the condensed water, the remaining water in the diversion channel and the water scooping barbs will continue to be ejected to the inner side of the water spraying ring under the action of centrifugal force, and thus continue to be blown towards the condenser in the form of water mist for heat dissipation until the remaining water is completely ejected.

[0056] In one embodiment, step 2 is specifically: if the temperature signal is lower than the preset threshold, a normal working signal is generated; otherwise, a heat dissipation working signal is generated.

[0057] According to the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A bionic axial flow fan, characterized in that, Comprising: A fan body having a plurality of fan blades, and the fan blades having blade edges; A water scooping structure including a plurality of water scooping barbs, the plurality of water scooping barbs being disposed on the blade edges and being inclined relative to the blade edges, and a cross-section of the water scooping barb being gradually reduced from an end close to the blade edge towards an end away from the blade edge; A water splashing ring connected to the fan body and disposed around the plurality of water scooping barbs; The water scooping structure is further provided with a water inlet and a diversion channel, and the diversion channel is disposed in the water scooping structure along an extending direction of the blade edge; The plurality of water scooping barbs are provided with water outlet holes, and the water outlet holes are communicated with the water inlet through the diversion channel; The water outlet holes are disposed at an end of the water scooping barb away from the blade edge; The fan blade further has a blade leading edge and a blade trailing edge, and the water inlet is disposed close to the blade leading edge; The water inlet is an open port, and an opening direction thereof faces a hub of the fan body.

2. The bionic axial flow fan according to claim 1, characterized in that: A cross-section of the diversion channel is gradually reduced from the blade leading edge towards the blade trailing edge.

3. An outdoor unit of an air conditioner, characterized in that, Comprising the bionic axial flow fan according to any one of claims 1-2; further comprising: A drive motor drivingly connected to the bionic axial flow fan.

4. The outdoor unit of an air conditioner according to claim 3, characterized in that, Further comprising: A condenser; A water receiving tray disposed below the bionic axial flow fan; A lifting device drivingly connected to the drive motor; A temperature sensor for obtaining a temperature of a preset distribution point on the condenser; A control device electrically connected to the temperature sensor for receiving a temperature signal of the temperature sensor and processing and generating a heat dissipation working signal or a normal working signal; The control device is further electrically connected to the lifting device for performing a lifting operation according to the heat dissipation working signal or the normal working signal; The control device is further electrically connected to the drive motor for performing a speed change operation according to the heat dissipation working signal or the normal working signal.

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