Air conditioner outdoor unit and air conditioner
By arranging a retaining ring between the impeller and the air guide ring of the outdoor unit of the air conditioner, the problem of air flow backflow in the axial flow blades is solved, and the air supply volume and heat exchange efficiency are improved.
Patent Information
- Application Number
- CN202420689779.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-03
AI Technical Summary
When the existing axial flow vane is running, the air flow returns due to the axial gap between the impeller and the air guide ring and between the blade and the air outlet, resulting in loss of air supply and reduced heat exchange efficiency.
Design an air conditioner outdoor unit that reduces the axial gap by arranging a retaining ring between the impeller and the air guide ring, and ensures that all airflow flows to the air outlet through the converging and guiding function of the retaining ring, thereby reducing axial leakage of airflow.
It effectively reduces the axial leakage of air flow, improves the air supply volume of the axial flow blades and the heat exchange efficiency of the air conditioner outdoor unit and air conditioner.
Smart Images
Figure CN222378275U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air conditioning, in particular to an air conditioning outdoor unit and an air conditioner. Background Art
[0002] Air conditioners are widely used for temperature regulation in indoor environments. The air conditioner outdoor unit of an existing air conditioner is generally provided with an axial flow fan blade for driving the airflow. However, when the existing axial flow fan blade is in operation, an axial gap will be formed between its own impeller and the air guide ring and between it and the air outlet. When the pressure on the windward side of the blade is greater than the pressure on the leeward side, the external airflow will flow back through the axial gap, thereby increasing the air supply loss of the axial flow fan blade and reducing the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner. Utility Model Content
[0003] The purpose of the utility model includes providing an air conditioner outdoor unit and an air conditioner to solve the technical problem that the air supply volume loss of the existing axial flow fan blades is large, resulting in low heat exchange efficiency of the air conditioner outdoor unit and the air conditioner.
[0004] In order to solve the above problems, the utility model provides an air-conditioning outdoor unit, including a box body and an axial flow fan blade, the panel of the box body is provided with an air outlet, and the inner end of the air outlet is surrounded by a retaining ring; the axial flow fan blade includes an impeller and an air guide ring, the impeller is rotatably arranged in the box body, the air guide ring is sleeved on the outer periphery of the impeller and fixedly connected to the outer edge of the blades of the impeller, and both the impeller and the air guide ring are arranged axially with respect to the air outlet.
[0005] When the air conditioner outdoor unit provided by the utility model is in use, firstly, the outer edge of the blades in the impeller is connected to the inner wall of the air guide ring with no gap therebetween, so that the airflow entering the air guide ring can all contact with the blades and flow to the retaining ring and the air outlet under the drive of the blades, thereby reducing the occurrence of axial leakage of the airflow caused by the axial gap between the blades and the air guide ring, and correspondingly increasing the air supply of the axial flow blades to the air conditioner outdoor unit, thereby improving the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner. Secondly, the impeller and the air guide ring are spaced apart from the panel to ensure that there is no interference between the rotation process of the impeller and the air guide ring and the panel and that they can rotate smoothly. The retaining ring is arranged between the air outlet and the air guide ring, and can play a role of enclosing the open axial gap between the two. The airflow flowing out through the air guide ring can first flow into the retaining ring, and flow to the air outlet and then flow out under the convergence and guiding action of the retaining ring; the setting of the retaining ring, on the one hand, can shorten or even eliminate the open axial gap between the air guide ring and the air outlet, thereby reducing the outward divergent flow rate when the airflow flows through the open axial gap with a longer length, correspondingly reducing the axial leakage of the airflow and increasing the flow rate of the airflow to the air outlet; on the other hand, a larger amount of airflow flows to the air outlet through the retaining ring, which can play a better air sealing role for the air outlet, thereby effectively reducing the axial leakage of the airflow caused by the backflow of the external airflow through the air outlet, and correspondingly further increasing the air supply volume of the air conditioner outdoor unit, thereby improving the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner.
[0006] Optionally, the inner diameter of the retaining ring is larger than the outer diameter of the air guide ring.
[0007] Optionally, an air outlet end of the air guide ring is located inside the retaining ring.
[0008] Optionally, the retaining ring and the air guide ring form a radial gap, and the width of the radial gap is 6 mm to 10 mm.
[0009] Optionally, the retaining ring includes a retaining cylinder and an annular flange arranged at the air outlet end of the retaining ring, the outer cylinder wall of the retaining cylinder is provided with a plurality of connecting ears dispersedly arranged along its circumference, the connecting ears are detachably fixed to the panel through a connecting piece, and the annular flange abuts against the panel.
[0010] Optionally, the air guide ring includes a straight section and an air inlet shrinkage section along the axial direction away from the air outlet, and the shrinkage end of the air inlet shrinkage section is connected to the air inlet end of the straight section.
[0011] Optionally, an inner wall of the straight tube section is provided with a flared guide ring surface, the flared guide ring surface is flared in a direction toward the panel and an air outlet end thereof is consistent with the air outlet end of the straight tube section.
[0012] Optionally, the impeller and the air guide ring are integrally formed.
[0013] Optionally, the air outlet is provided with a mesh cover, and the mesh cover is integrally formed with the panel.
[0014] The utility model also provides an air conditioner, comprising an air conditioner indoor unit and the above-mentioned air conditioner outdoor unit, wherein the air conditioner indoor unit is connected with the air conditioner outdoor unit through a refrigerant pipeline to form a refrigerant circulation.
[0015] The air conditioner provided by the utility model adopts the above-mentioned air conditioner outdoor unit, and the air supply volume loss of the air conditioner outdoor unit is small, which can improve the heat exchange efficiency of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0017] Figure 1 This is a front view of the connection between the middle panel, retaining ring and axial flow fan blade of the air conditioner outdoor unit provided by the utility model;
[0018] Figure 2 for Figure 1 Sectional view in the AA direction;
[0019] Figure 3 An exploded view of the middle panel, retaining ring and axial flow fan blades of the air conditioner outdoor unit provided by the utility model;
[0020] Figure 4 This is a front view of the retaining ring in the air conditioner outdoor unit provided by the utility model.
[0021] Description of reference numerals:
[0022] 100-axial flow fan blade; 110-impeller; 111-hub; 112-blade; 120-air guide ring; 121-straight section; 122-air inlet constriction section; 200-panel; 210-air outlet; 300-retaining ring; 310-retaining cylinder; 320-annular flange; 330-connecting ear; 340-reinforcement rib; 400-radial gap; 500-mesh cover. DETAILED DESCRIPTION
[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0024] This embodiment provides an air conditioner outdoor unit, such as Figure 1-Figure 3As shown, it includes a box body and an axial flow fan blade 100, the panel 200 of the box body is provided with an air outlet 210, and a retaining ring 300 is provided around the inner end of the air outlet 210; the axial flow fan blade 100 includes an impeller 110 and an air guide ring 120, the impeller 110 is rotatably arranged in the box body, the air guide ring 120 is sleeved on the outer periphery of the impeller 110 and fixedly connected to the outer edge of the blade 112 of the impeller 110, and both the impeller 110 and the air guide ring 120 are arranged axially with respect to the air outlet 210.
[0025] This embodiment also provides an air conditioner, including an air conditioner indoor unit and the above-mentioned air conditioner outdoor unit, and the air conditioner indoor unit and the air conditioner outdoor unit are connected through a refrigerant pipeline to form a refrigerant circulation.
[0026] The present embodiment provides an air conditioner outdoor unit and an air conditioner, wherein the air conditioner outdoor unit includes a box body serving as an installation base and forming an air duct inside, an axial flow fan blade 100 for driving the air flow through the air duct, and a retaining ring 300 for enclosing the axial gap between the air outlet 210 and the axial flow fan blade 100; wherein the air conditioner includes an air conditioner indoor unit and an air conditioner outdoor unit which are connected to form a refrigerant circulation to achieve temperature regulation of the indoor environment by transporting heat.
[0027] When in use, the hub 111 of the axial flow fan blade 100 rotates under the drive, and the multiple blades 112 dispersedly arranged on the periphery of the hub 111 and the air guide ring 120 sleeved on the outer edges of the multiple blades 112 all rotate synchronously with the hub 111. The rotating blades 112 can drive the airflow, and the air guide ring 120 can converge and guide the airflow. Accordingly, the airflow flows through the air guide ring 120, the retaining ring 300 and the air outlet 210 in sequence under the convergence and guidance effect of the air guide ring 120 and the driving effect of the impeller 110, and then flows out of the box; the heat exchanger in the outdoor unit of the air conditioner performs convection heat exchange with the airflow, and the refrigerant in the heat exchanger flows to the heat exchanger of the indoor unit of the air conditioner through the refrigerant pipeline and performs convection heat exchange with the indoor environment, thereby realizing temperature regulation of the indoor environment.
[0028] Among them, when the air conditioner outdoor unit provided by this embodiment is in use, first, the outer edge of the blade 112 in the impeller 110 is connected to the inner wall of the air guide ring 120, and there is no gap between the two. Then, the airflow entering the air guide ring 120 can all contact with the blade 112 and flow to the retaining ring 300 and the air outlet 210 under the drive of the blade 112, thereby reducing the axial gap between the blade 112 and the air guide ring 120 to cause axial leakage of the airflow, and correspondingly increasing the air supply of the axial flow blade 100 to the air conditioner outdoor unit, thereby improving the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner. Secondly, the impeller 110 and the air guide ring 120 are spaced apart from the panel 200 to ensure that the impeller 110 and the air guide ring 120 rotate without interference with the panel 200 and can rotate smoothly. The retaining ring 300 is arranged between the air outlet 210 and the air guide ring 120 to block the open axial gap between the two. The airflow flowing out through the air guide ring 120 can first flow into the retaining ring 300, and then flow to the air outlet 210 and out under the convergence and guidance of the retaining ring 300. The setting of the retaining ring 300 can, on the one hand, shorten or even eliminate the air flow of the air guide ring 120. There is an open axial gap between the wind ring 120 and the air outlet 210, thereby reducing the outward divergent flow rate of the airflow when it flows through the long open axial gap, correspondingly reducing the axial leakage of the airflow and increasing the flow rate of the airflow to the air outlet 210; on the other hand, a larger amount of airflow flows to the air outlet 210 through the retaining ring 300, which can play a better air sealing role for the air outlet 210, thereby effectively reducing the axial leakage of the airflow caused by the backflow of the external airflow through the air outlet 210, and correspondingly further increasing the air supply volume of the air conditioner outdoor unit, thereby improving the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner.
[0029] Optionally, in this embodiment, if Figure 2 As shown, the inner diameter of the retaining ring 300 is greater than the outer diameter of the air guide ring 120. The air guide ring 120, the impeller 110, the retaining ring 300 and the air outlet 210 are coaxially arranged, and the inner diameter of the retaining ring 300 is greater than the outer diameter of the air guide ring 120. Then, in one radial section of the retaining ring 300, the projection of the air guide ring 120 to the radial section is completely located within the annular contour of the retaining ring 300. Accordingly, the airflow flowing out of the air guide ring 120 can flow more fully into the retaining ring 300, thereby further improving the convergence effect of the retaining ring 300 on the airflow between the air outlet 210 and the air guide ring 120, and correspondingly further ensuring the air supply volume of the air conditioner outdoor unit, thereby further improving the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner.
[0030] Of course, in some other embodiments, the inner diameter of the retaining ring 300 may also be greater than or equal to the inner diameter of the air guide ring 120 and less than or equal to the outer diameter of the air guide ring 120 .
[0031] In this embodiment, Figure 2As shown, the air outlet end of the air guide ring 120 is located in the retaining ring 300. One end of the air guide ring 120 facing the air outlet 210 extends into the retaining ring 300, so the retaining ring 300 can completely enclose the axial gap between the air guide ring 120 and the air outlet 210 in the axial direction, and accordingly, the airflow flowing out of the air guide ring 120 can completely enter the retaining ring 300 and flow out from the air outlet 210 under the guiding effect of the retaining ring 300, thereby further reducing the leakage of the airflow between the air outlet 210 and the air guide ring 120, and correspondingly further increasing the air supply volume of the air conditioner outdoor unit, and further improving the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner.
[0032] Specifically, in this embodiment, the depth of the air guide ring 120 inserted into the retaining ring 300 is 5mm to 8mm, and the width of the radial gap 400 formed between the retaining ring 300 and the air guide ring 120 is 6mm to 10mm. The setting of the axial insertion depth and the radial gap 400 between the retaining ring 300 and the air guide ring 120 can not only ensure that the retaining ring 300 does not interfere with the rotation of the air guide ring 120 and the impeller 110, and accordingly ensure the normal operation of the axial flow fan blade 100; but also ensure that the airflow flowing out of the air guide ring 120 can flow to the air outlet 210 along the retaining ring 300, and accordingly reduce the amount of airflow flowing out of the air guide ring 120 through the radial gap 400 between the retaining ring 300 and the air guide ring 120 to flow back into the box body, thereby ensuring the air supply volume of the axial flow fan blade 100 to the air outlet 210, and accordingly ensuring the air supply volume of the air conditioner outdoor unit, and ensuring the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner.
[0033] In this embodiment, Figure 2-Figure 4As shown, the retaining ring 300 includes a retaining cylinder 310 and an annular flange 320 provided at the air outlet end of the retaining ring 300. The outer cylinder wall of the retaining cylinder 310 is provided with a plurality of connecting ears 330 dispersedly arranged along the circumference thereof. The connecting ears 330 are detachably fixed to the panel 200 through a connecting piece, and the annular flange 320 abuts against the panel 200. This is one of the specific forms of the retaining ring 300. On the one hand, the retaining cylinder 310 of the retaining ring 300 encloses the axial gap between the air outlet 210 and the air guide ring 120 and is detachably fixed to the panel 200 through the connecting ears 330. In the subsequent maintenance process, only the panel 200 or the retaining ring 300 can be disassembled and maintained, thereby improving the maintenance convenience of the air conditioner outdoor unit and the air conditioner; and the retaining ring 300 with appropriate radial size and circumferential size can be selected according to the model of the air guide ring 120 and installed on the panel 200, thereby improving the adaptation range of the panel 200 and the axial flow fan. On the other hand, the annular flange 320 abuts against the panel 200, which can not only improve the stability of the relative position between the retaining ring and the panel 200 to ensure the adaptation and air guiding of the retaining ring and the air guide ring 120, but also increase the connection contact area between the retaining ring 300 and the panel 200, improve the air tightness of the connection between the two, and correspondingly reduce the leakage of the airflow passing through the connection between the retaining ring 300 and the panel 200, thereby further improving the air supply volume of the air conditioner outdoor unit and the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner. On the other hand, the retaining ring 300 is a non-appearance part and can be disassembled relative to the panel 200. The retaining ring 300 can be processed and produced using low-end plastics or recycled materials, which can reduce its cost and improve the utilization rate of waste plastics while ensuring its converging and guiding functions.
[0034] Specifically, the above-mentioned connecting member may include a screw or a snap-fit structure; a reinforcing rib 340 may be connected between the retaining cylinder 310 and the annular flange 320 to improve the relative position stability of the two.
[0035] Optionally, in this embodiment, if Figure 2 and Figure 3 As shown, the air guide ring 120 includes a straight section 121 and an air inlet constriction section 122 along the axial direction away from the air outlet 210, and the constriction end of the air inlet constriction section 122 is connected to the air inlet end of the straight section 121. On the basis that the radial dimensions of the impeller 110 and the straight section 121 are fixed, the air inlet constriction section 122 in a constricted shape is provided at the air inlet end of the straight section 121, and the expanded end of the air inlet constriction section 122 serves as the actual air inlet end of the air guide ring 120, which can effectively increase the air inlet area of the air guide ring 120. Under the driving action of the impeller 110, more gas can flow into the air guide ring 120 through the air inlet, thereby improving the convergence effect of the air guide ring 120 on the air flow, and correspondingly further increasing the air supply volume of the axial flow fan blade 100 to the air conditioner outdoor unit, thereby further improving the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner.
[0036] In this embodiment, the inner wall of the straight tube section 121 is provided with a flared guide ring surface, which is flared in the direction toward the panel 200 and its air outlet end is consistent with the air outlet end of the straight tube section 121 . The air outlet end of the straight tube section 121 is inserted into the retaining ring 300, and an expanding guide annular surface in a flaring shape is provided at the air outlet port of the straight tube section 121. The airflow flowing out through the straight tube section 121 can flow out in a divergent shape under the guiding effect of the expanding guide annular surface, wherein the airflow in the middle area flows into the retaining ring 300 axially and flows toward the air outlet 210, and the airflow flowing out in the edge area in a divergent manner flows toward the retaining ring 300 and contacts the inner wall surface of the retaining ring 300 and then flows along the retaining ring 300 to the air outlet 210. The airflow can completely fill the retaining ring 300, thereby reducing the backflow leakage caused by the gap formed between the edge area in the retaining ring 300 and the airflow, and correspondingly further improves the air supply volume of the air conditioner outdoor unit and the heat exchange efficiency of the air conditioner outdoor unit and the air conditioner.
[0037] Specifically, the included angle between the generatrix of the expanded guide annular surface and its axis is less than 45°.
[0038] In this embodiment, the impeller 110 and the air guide ring 120 are integrally formed. During processing, the entire axial flow fan blade 100 can be integrally formed, specifically including the straight tube section 121, the air inlet constriction section 122, the plurality of blades 112 and the hub 111. No additional assembly or connection operation is required between the components, the processing is convenient, and the connection firmness and position accuracy between the components are high. The axial flow fan blade 100 has higher stability in rotating operation under driving, and there is no gap at the connection between two adjacent components, and the noise pollution generated during the operation is smaller.
[0039] Optionally, in this embodiment, if Figure 1-Figure 3 As shown, the air outlet 210 is provided with a mesh cover 500, and the mesh cover 500 is integrally formed with the panel 200. The mesh cover 500 is separated at the air outlet 210, which can protect the axial flow fan blades 100 and the like therein, reduce the damage caused by foreign objects entering the box through the air inlet to the axial flow fan blades 100, the heat exchanger, etc., and accordingly ensure the normal operation of the air conditioner outdoor unit; at the same time, it can also reduce the occurrence of children and the like putting their hands into the air outlet 210 and being injured by the blades 112 due to misoperation, and accordingly improve the safety of the air conditioner outdoor unit. At the same time, the mesh cover 500 and the panel 200 are integrally formed, and the processing convenience and connection firmness of the two are higher. During operation, there is no mechanical connection between the two and no corresponding noise pollution will be generated.
[0040] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An air conditioner outdoor unit, characterized in that: The invention comprises a box body and an axial flow fan blade (100), wherein a panel (200) of the box body is provided with an air outlet (210), and a retaining ring (300) is provided around the inner end of the air outlet (210); the axial flow fan blade (100) comprises an impeller (110) and an air guide ring (120), wherein the impeller (110) is rotatably arranged in the box body, and the air guide ring (120) is sleeved on the outer periphery of the impeller (110) and fixedly connected to the outer edge of a blade (112) of the impeller (110), and both the impeller (110) and the air guide ring (120) are arranged axially spaced from the air outlet (210).
2. The air conditioner outdoor unit according to claim 1, characterized in that: The inner diameter of the retaining ring (300) is greater than the outer diameter of the air guide ring (120).
3. The air conditioner outdoor unit according to claim 1, characterized in that: The air outlet end of the air guide ring (120) is located inside the retaining ring (300).
4. The air conditioner outdoor unit according to claim 3, characterized in that: The retaining ring (300) and the air guide ring (120) form a radial gap (400), and the width of the radial gap (400) is 6 mm to 10 mm.
5. The air conditioner outdoor unit according to any one of claims 1 to 4, characterized in that: The retaining ring (300) comprises a retaining cylinder (310) and an annular flange (320) arranged at the air outlet end of the retaining ring (300); the outer cylinder wall of the retaining cylinder (310) is provided with a plurality of connecting ears (330) dispersedly arranged along its circumference; the connecting ears (330) are detachably fixed to the panel (200) via a connecting piece; and the annular flange (320) abuts against the panel (200).
6. The air conditioner outdoor unit according to any one of claims 1 to 4, characterized in that: The air guide ring (120) comprises a straight section (121) and an air inlet constriction section (122) along the axial direction away from the air outlet (210), and the constriction end of the air inlet constriction section (122) is connected to the air inlet end of the straight section (121).
7. The air conditioner outdoor unit according to claim 6, characterized in that: The inner wall of the straight tube section (121) is provided with a flared flow guide annular surface, the flared flow guide annular surface is flared in a direction toward the panel (200), and its air outlet end is consistent with the air outlet end of the straight tube section (121).
8. The air conditioner outdoor unit according to any one of claims 1 to 4, characterized in that: The impeller (110) and the air guide ring (120) are integrally formed.
9. The air conditioner outdoor unit according to any one of claims 1 to 4, characterized in that: The air outlet (210) is provided with a mesh cover (500), and the mesh cover (500) is integrally formed with the panel (200).
10. An air conditioner, characterized in that: It comprises an air-conditioning indoor unit and an air-conditioning outdoor unit according to any one of claims 1 to 9, wherein the air-conditioning indoor unit is connected with the air-conditioning outdoor unit via a refrigerant pipeline to form a refrigerant circulation.