CN210484190U - Air condensing units that blade apex is V type structure - Google Patents
Air condensing units that blade apex is V type structure Download PDFInfo
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- CN210484190U CN210484190U CN201921421219.3U CN201921421219U CN210484190U CN 210484190 U CN210484190 U CN 210484190U CN 201921421219 U CN201921421219 U CN 201921421219U CN 210484190 U CN210484190 U CN 210484190U
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- outdoor unit
- air conditioner
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Abstract
The utility model relates to an air condensing units impeller that blade apex is V type structure, a serial communication port, impeller, heat exchanger, kuppe, motor support, median septum, play net, condenser, liquid storage pot, flow controller, compressor that are V type structure including the blade apex. The utility model provides a pair of air condensing units that blade apex is V type structure slots at air condensing units impeller blade apex, presents V type structure, carries out the improved design to blade apex structure under the prerequisite that does not increase the cost, simple process, and the expense is low, and the juice is established in the integration of being convenient for, but large-scale production. Meanwhile, on the premise of ensuring that the overall performance of other components of the outdoor unit of the air conditioner is not changed, the outlet flow rate of the outdoor unit of the air conditioner is improved, the pneumatic noise of the outdoor unit of the air conditioner is reduced, the flow loss of the outdoor unit of the air conditioner is reduced, the inherent frequency of an impeller of the outdoor unit of the air conditioner is improved, the efficiency of the outdoor unit of the air conditioner is improved, and the service life of the outdoor unit of the air.
Description
Technical Field
The utility model relates to an air condensing units energy-conservation falls the technical field that makes an uproar, especially relates to an air condensing units that blade apex is V type structure.
Background
With the progress of society and the development of science and technology, the quality of life standard of people is obviously improved, and an air conditioner is not used as a luxury household appliance and gradually enters ordinary families, so that the life style of people is changed, and people are warm in winter and cool in summer all the year round. But indoor comfortable and convenient that brings, also to outdoor noise of having propagated, these noises not only can influence indoor user, have reduced self experience and have felt, more can influence surrounding environment, give other people's puzzlement in life and work, have reduced other people's happiness. Moreover, noise originally becomes a major factor of urban pollution, and noise of the air conditioner outdoor unit also serves as a part of a noise pollution source, so people hope to pay attention to noise reduction of the air conditioner, which also becomes a great progress requirement and a great challenge in the air conditioner manufacturing industry.
In terms of research contents of reducing flow loss and aerodynamic noise of the air conditioner outdoor unit and improving aerodynamic efficiency, researchers all over the world propose different research methods, wherein an experimental method and a numerical simulation method are main methods for researching the aerodynamic noise of the air conditioner outdoor unit. For example, the method is a research method which is worth taking a reference, such as a method which is verified by a combination of a research method of numerical simulation and an experimental method for researching the trend of the pneumatic noise of the air conditioner outdoor unit. The modification is to change the aerodynamic characteristics of the outdoor unit of the air conditioner by optimizing the structural parameters of the impeller and designing a new impeller so as to reduce the aerodynamic noise of the outdoor unit of the air conditioner, but changing the structural parameters of the impeller and designing the new impeller change the structural dynamics characteristics of the impeller of the outdoor unit of the air conditioner, so that the problem becomes complex, the influence factors are increased, and the research difficulty is increased.
Among the energy losses of the outdoor unit of the air conditioner, the flow loss is one of the main factors affecting the ventilation efficiency thereof. Because a gap exists between the impeller and the integral casing of the outdoor unit of the air conditioner, when the impeller normally rotates, a turbulent vortex is formed in the rotating area of the impeller, and thus, flow loss is caused. In order to reduce the flow loss caused by the rotation of the impeller, researchers at home and abroad explore the flow performance of the outdoor unit of the air conditioner in the rotating area of the impeller by modifying the blades of the outdoor unit of the air conditioner, and after the blade tips of the blades are cut, the vortex disorder state in the outdoor unit of the air conditioner is improved, and the cutting shape and the cutting amount of the blade tips of the blades of the outdoor unit of the air conditioner directly influence the ventilation efficiency and the pneumatic noise of the outdoor unit of the air conditioner.
The utility model provides a pair of air condensing units that blade apex is V type structure under the whole inner structure's of air condensing units condition not changing, through carrying out the modification design to blade apex structure, reduce air condensing units's pneumatic noise, improve ventilation efficiency, improve the atress condition of blade, reduce the fatigue degree of blade, improve the natural frequency of air condensing units impeller, increase air condensing units's life, for air condensing units work of making an uproar falls provides relative design experience and theoretical experience.
Disclosure of Invention
The utility model provides a pair of air condensing units, locate the fluting at the blade apex, make blade apex structural change, present V type structure, under the whole inner structure's of air condensing units circumstances, through carrying out the retrofit design to blade apex structure, reduce air condensing units's pneumatic noise, improve ventilation efficiency, improve the atress condition of blade, reduce the fatigue degree of blade, improve air condensing units impeller's natural frequency, increase air condensing units's life.
The utility model provides a pair of blade apex is air condensing units of V type structure, including impeller body, impeller body's blade apex position has V type structure grooving.
The utility model provides a pair of air condensing units, impeller, heat exchanger, kuppe, motor support, median septum, play net, condenser, liquid storage pot, flow controller, compressor etc. that are V type structure including the blade apex. The heat exchanger, the air guide sleeve, the motor support, the middle partition plate and the air outlet net sequentially form an air duct system of the air conditioner outdoor unit, blades with V-shaped blade tips are respectively fixed on the blades to form an impeller of the air conditioner outdoor unit, the impeller of the air conditioner outdoor unit is located in the air duct system body of the air conditioner outdoor unit, the condenser, the liquid storage tank and the restrictor are respectively located in the air conditioner outdoor unit body, and the compressor drives a refrigerant in the air conditioner refrigeration process.
The utility model provides a pair of air condensing units that blade apex is V type structure, locate the fluting at air condensing units impeller blade apex, make the apex structural change, present V type structure, carry out the retrofit design to the apex structure under the prerequisite that does not increase the cost, simple process, the expense is low, and the juice can be established in the integration of being convenient for, but large-scale production. Meanwhile, on the premise of ensuring that the performances of other parts of the outdoor unit of the air conditioner are not changed, the pneumatic noise of the outdoor unit of the air conditioner is reduced, the ventilation efficiency is improved, the fatigue degree of the blades is reduced, the natural frequency of an impeller of the outdoor unit of the air conditioner is improved, the efficiency of the outdoor unit of the air conditioner is improved, and the service life of the outdoor unit of the air conditioner is prolonged.
Drawings
For a clear explanation of the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an impeller of an outdoor unit of an air conditioner, in which blade tips of the blades are in a V-shaped structure, according to an embodiment of the present invention;
fig. 2 is a schematic view of a V-shaped structure of an outdoor unit of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic view of arrangement of noise calculation points in an impeller rotation area of an outdoor unit of an air conditioner according to an embodiment of the present invention;
fig. 4 is a graph illustrating a variation curve of the maximum sound pressure level of the noise in the rotation area of the outdoor unit impeller of the air conditioner before and after the modification of the blade tip, at different distances from the center of the cross-section (i.e., the rotation central axis).
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless explicitly stated or limited otherwise, the terms "mounted", "connected" and "connected" are to be understood broadly, and may for example be fixedly connected, detachably connected or integrally connected; either mechanically or electrically: they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, the utility model provides a pair of blade apex is air condensing units of V type structure, including the impeller body, the blade apex part of impeller has the V type grooving, and the apex is the geometric parameters of V type structure including grooving degree of depth h, grooving width an, grooving angle theta.
The utility model provides a pair of air condensing units, impeller, heat exchanger, kuppe, motor support, median septum, play net, condenser, liquid storage pot, flow controller, compressor etc. that are V type structure including the blade apex. The heat exchanger, the air guide sleeve, the motor support, the middle partition plate and the air outlet net sequentially form an air duct system of the air conditioner outdoor unit, the blades with V-shaped blade tips are respectively fixed on the blades to form an impeller of the air conditioner outdoor unit, the impeller of the air conditioner outdoor unit is located in the air duct system body of the air conditioner outdoor unit, the condenser, the liquid storage tank and the restrictor are respectively located in the air conditioner outdoor unit, and the compressor drives a refrigerant in the air conditioner refrigeration process.
In order to accurately calculate the vorticity change of the inner basin of the air conditioner outdoor unit with the blade tips not grooved and the V-shaped blade tips and the aerodynamic noise change characteristics of the rotating area of the impeller, a FW-H acoustic model is used for carrying out numerical analysis on 6 calculation points in the radial direction of the rotating area of the air conditioner outdoor unit, and the specific noise calculation points are arranged as shown in FIG. 3. The three-dimensional coordinate axis of the calculation area is defined as that the center of the rotation area of the impeller of the air conditioner outdoor unit is taken as a coordinate origin, the direction of an outlet axis is taken as the positive direction of a Z axis, every two mutually perpendicular radial directions passing through the origin are respectively taken as X, Y axes, a coordinate system is established by taking the direction pointing to an air outlet as the positive direction, three coordinate positions taken by the Z axis of a noise calculation section are taken as sections (Z =0 mm), 6 noise calculation points are respectively taken in the radial direction of the sections, namely the Y axis direction, and the axis coordinates of Y are respectively 80mm, 100mm, 120mm, 140mm, 160mm and 180 mm.
In the embodiment of the present invention, the designed V-shaped size of the blade tip is the depth h =7.36mm of the cutting groove, the width a =8.5mm of the cutting groove, and the angle θ =60 ° of the cutting groove, and is compared with the unmodified impeller blade. When the rotating speed of the impeller is 820r/min, the vorticity change of an internal flow area of the outdoor unit is adjusted when the blades are not modified and the blade tips are in a V-shaped structure in the rotating area of the impeller of the outdoor unit, which is not modified, is analyzed by adopting large-vortex simulation calculation, and the vorticity value of the rotating area of the impeller of the outdoor unit is 218.7s-1The vortex value of the rotating area of the outdoor unit impeller with the blade tip in a V-shaped structure is 189.8s-1The vorticity decreased by 13.21%. Therefore, the vane tips are of the V-shaped structures and can effectively break up the vorticity of the rotating area of the impeller of the outdoor unit of the air conditioner, the vorticity of the inner basin of the impeller is reduced due to the V-shaped structures of the vane tips, the phenomenon of flow disorder is improved, the energy loss is reduced, the efficiency of the outdoor unit of the air conditioner is improved, and the service life of the ventilator is prolonged.
The embodiment of the utility model provides an in, the impeller is under the same rated revolution 820r/min, and the noise frequency spectrum map to the noise calculation point of the air condensing units impeller rotation region who does not remodel and blade apex be V type structure respectively carries out the analysis, and the pneumatic noise of the air condensing units impeller rotation region mainly comprises the rotation fundamental frequency and harmonic wave, the vortex shedding frequency of impeller, and wherein the frequency that the biggest sound pressure level corresponds is the rotation fundamental frequency 40.04Hz of impeller. As can be seen from fig. 4, the noise spectrogram of each noise test point is analyzed to obtain the maximum sound pressure level of the noise at each calculation point, the Y-axis coordinate value, i.e., the distance from the noise calculation point to the center of the cross section (i.e., the rotation central axis), is an abscissa, and the maximum sound pressure level of the calculation point is an ordinate, and it can be known by comparing the maximum sound pressure level change curves of the unmodified and the V-shaped blade tip structures, the sound pressure level of the V-shaped blade tip structure is significantly reduced, the maximum sound pressure level of the V-shaped blade tip structure is 100.1dB at a position 80mm from the hub center, and the maximum sound pressure level of the unmodified blade is 102.1 dB; at the position 100mm away from the center of the hub, the maximum sound pressure level of the V-shaped structure of the blade tip is 105.2dB, and the maximum sound pressure level of the unmodified blade is 108.6 dB; at the position 120mm away from the center of the hub, the maximum sound pressure level of the V-shaped structure of the blade tip is 104.8dB, and the maximum sound pressure level of the unmodified blade is 108.3 dB; at the position 140mm away from the center of the hub, the maximum sound pressure level of the V-shaped structure of the blade tip is 104.2dB, and the maximum sound pressure level of the unmodified blade is 108.8 dB; at a position 160mm away from the center of the hub, the maximum sound pressure level of the V-shaped structure of the blade tip is 103.3dB, and the maximum sound pressure level of the unmodified blade is 108.2 dB; at the position 180mm away from the center of the hub, the maximum sound pressure level of the V-shaped structure of the blade tip is 99.4dB, and the maximum sound pressure level of the unmodified blade is 103.8 dB; the blade tip is in a V-shaped structure, and the noise is averagely reduced by 3.5 percent compared with the noise of the unmodified blade.
In the embodiment of the present invention, under the excitation of 10N exciting force, the test finds that the impeller with the blade tip in the V-shape 1 is increased in the natural frequency of each step compared with the impeller with the unmodified blade, wherein when the impeller with the blade tip in the V-shape structure is 41.98Hz, the natural frequency of the unmodified blade is 40.56Hz, and the natural frequency is increased by 3.5%; in the second order, the natural frequency of the impeller with the V-shaped blade tip structure is 44.55Hz, the natural frequency of the unmodified impeller of the blade is 42.71Hz, and the natural frequency is improved by 4.3 percent; in the third order, the inherent frequency of the impeller with the V-shaped blade tip structure is 64.42Hz, the inherent frequency of the unmodified impeller is 59.56Hz, and the inherent frequency is improved by 8.15 percent; in the fourth step, the natural frequency of the impeller with the V-shaped blade tip structure is 68.24Hz, the natural frequency of the unmodified impeller of the blade is 61.72Hz, and the natural frequency is improved by 10.56%. This is consistent with the conclusion that a decrease in blade mass in the blade natural frequency equation results in an increase in the blade natural frequency.
Through the modification to blade apex structure, the utility model provides a blade apex is the outdoor unit of air condensing units of V type structure, under the prerequisite of taking into account other part performance of outdoor unit of air condensing units, the flow loss that has reduced outdoor unit of air condensing units's pneumatic noise and the inside fluid of outdoor unit of air condensing units caused because of the vortex has improved the atress condition of blade and the inside fluidic turbulent state of outdoor unit of air condensing units, has reduced the fatigue degree of blade, improves the natural frequency of outdoor unit of air condensing units impeller, prolongs outdoor unit of air condensing units's life.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (1)
1. An air conditioner outdoor unit with V-shaped blade tips is characterized by comprising an impeller body, wherein V-shaped cutting grooves are formed in the blade tip part of the impeller body;
the V-shaped structural parameters of the blade tip are the depth h =7.36mm of the cutting groove, the width a =8.5mm of the cutting groove and the angle theta =60 degrees of the cutting groove;
the air conditioner also comprises a heat exchanger, a flow guide sleeve, a motor bracket, a middle partition plate, an air outlet net, a condenser, a liquid storage tank, a throttler and a compressor;
the heat exchanger, the air guide sleeve, the motor support, the middle partition plate and the air outlet net sequentially form an air duct system of the air conditioner outdoor unit, the blades with V-shaped blade tips are respectively fixed on the impellers to form an impeller of the air conditioner outdoor unit, the impeller of the air conditioner outdoor unit is located in the air duct system body of the air conditioner outdoor unit, the condenser, the liquid storage tank and the restrictor are respectively located in the air conditioner outdoor unit body, and the compressor drives a refrigerant in the air conditioner refrigeration process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921421219.3U CN210484190U (en) | 2019-08-29 | 2019-08-29 | Air condensing units that blade apex is V type structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921421219.3U CN210484190U (en) | 2019-08-29 | 2019-08-29 | Air condensing units that blade apex is V type structure |
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| CN210484190U true CN210484190U (en) | 2020-05-08 |
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| CN201921421219.3U Expired - Fee Related CN210484190U (en) | 2019-08-29 | 2019-08-29 | Air condensing units that blade apex is V type structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374920A (en) * | 2019-08-29 | 2019-10-25 | 代元军 | A kind of air-conditioner outdoor unit of the V-shaped structure of blade tip |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374920A (en) * | 2019-08-29 | 2019-10-25 | 代元军 | A kind of air-conditioner outdoor unit of the V-shaped structure of blade tip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200901 Address after: 201306 No. 300, SHUIHUA Road, Pudong New Area, Shanghai Co-patentee after: Yuan Jun of the Dynasty Patentee after: SHANGHAI DIANJI University Address before: 830091 Nanchang road the Xinjiang Uygur Autonomous Region Urumqi shayibake District No. 236 Patentee before: Yuan Jun of the Dynasty |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 Termination date: 20210829 |