CN108443978B

CN108443978B - Air conditioning equipment

Info

Publication number: CN108443978B
Application number: CN201810180619.3A
Authority: CN
Inventors: 游斌; 喻辉
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2018-03-05
Filing date: 2018-03-05
Publication date: 2020-05-15
Anticipated expiration: 2038-03-05
Also published as: CN108443978A

Abstract

The present invention provides an air conditioning apparatus, comprising: the shell is provided with an air outlet and an air return inlet; the volute air channel is positioned in the shell and is communicated with the air outlet and the air return inlet, wherein the volute air channel comprises a volute part and a volute tongue part, the volute part is provided with a butting edge, and the butting edge is contacted with the inner end of the air outlet; the wind wheel is a cross-flow wind wheel, the wind wheel is positioned in the volute air duct, an intersecting line formed by the intersection of the inner surface of the volute part and a middle section vertical to the axis of the wind wheel is a molded line of the volute part, the molded line and the abutting edge have an intersecting point, the line length F1 from the point closest to the wind wheel on the molded line to the intersecting point, the hole wall length F2 of the air outlet, the diameter D of the wind wheel and the axial length L of the wind wheel meet the condition that the ratio of L/D is more than or equal to 1.8 and less than or equal to (F1+ F2)/D is less than or equal to 2.5, and. The air conditioning equipment that this scheme provided can ensure to realize that the air current streamline in the spiral case wind channel is level and smooth and easy, and then reaches the purpose that reduces the air current noise, reduces the resistance loss, compromises noise reduction effect and the efficiency that promotes the product.

Description

Air conditioning equipment

Technical Field

The invention relates to the field of air conditioners, in particular to an air conditioning device.

Background

In the process of implementing the invention, the inventor finds that the prior art has the following problems: the existing air conditioning equipment has the problems of unstable indoor side wind sound, high noise and the like during operation, so that the product use experience is poor, and the whole energy efficiency of the air conditioning equipment is low and the energy consumption is high.

Disclosure of Invention

In order to solve at least one of the above technical problems, an object of the present invention is to provide an air conditioning apparatus.

To achieve the above object, an embodiment of the present invention provides an air conditioning apparatus including: the shell is provided with an air outlet and an air return inlet; the volute air channel is positioned in the shell and is communicated with the air outlet and the air return inlet, the volute air channel comprises a volute part and a volute tongue part, the volute part is provided with a butting edge, and the butting edge is contacted with the inner end of the air outlet; the wind wheel is a cross-flow wind wheel, the wind wheel is positioned in the volute air duct, an intersecting line formed by the intersection of the inner surface of the volute part and a middle section perpendicular to the axis of the wind wheel is a molded line of the volute part, the molded line and the abutting edge have an intersecting point, a line length F1 from a point closest to the wind wheel to the intersecting point on the molded line, the hole wall length F2 of the air outlet, the diameter D of the wind wheel and the axial length L of the wind wheel meet the conditions that L/D is not less than 1.8 and not more than (F1+ F2)/D is not more than 2.5, and L/D is not less than 3.5 and not more than 4.6.

In the air conditioning equipment provided by the above embodiment of the present invention, the length-diameter ratio of the wind wheel satisfies: L/D is more than or equal to 3.5 and less than or equal to 4.6, and the relationship between the molded line length F1 from the point closest to the wind wheel on the molded line of the volute part to the molded line length F2 of the molded line and the abutting edge intersection point of the molded line and the volute part, the hole wall length F2 of the air outlet and the diameter D of the wind wheel is more than or equal to 1.8 and less than or equal to (F1+ F2)/D and less than or equal to 2.5, so that the length of the main flow guide part on the volute part can be ensured to be coordinated with the size of the wind wheel, the flow line of the air in the volute air channel is ensured to be smooth and smooth, the purposes.

In addition, the cross-flow wind wheel has small requirement on the radial dimension, does not occupy the space of a heat exchanger, can be beneficial to reducing the volume of the inner side part of the equipment room, has the advantages of uniform air supply and low noise, can improve the air outlet uniformity and softness of a product, ensures that the airflow streamline in the volute air channel is smooth and smooth, achieves the purposes of reducing the airflow noise and the airflow loss, and considers the noise reduction effect and the energy efficiency of the product.

More specifically, when (F1+ F2)/D is less than 1.8, the wind wheel is relatively large, the volute downstream effect and the actual wind guiding efficiency of the wind wheel are relatively low, the wind guiding capability of the wind wheel has a large deviation in the matching relationship compared with the volute downstream effect and the actual wind guiding efficiency of the wind wheel, if the quiet comfort is to be obtained, the rotation speed and the wind pressure of the wind wheel need to be greatly reduced, which requires a very high heat exchange efficiency cost, and the wind wheel can not work in the rotating speed frequency band which realizes the optimization of the noise reduction effect and the most efficient noise reduction effect, so that the noise reduction effect obtained by adjusting parameters such as wind pressure, wind speed and the like is not obvious, when (F1+ F2)/D is larger than 2.5, the wind wheel is smaller, the wind resistance on the volute part is larger, therefore, the resistance loss of the equipment is increased, the turbulence noise is increased rapidly, the use experience of the equipment is reduced, and the energy efficiency is reduced; in the scheme, F1, F2 and D are controlled to meet the requirements that (F1+ F2)/D is more than or equal to 1.8 and less than or equal to 2.5 and L/D is more than or equal to 3.5 and less than or equal to 4.6, wherein when the length-diameter ratio L/D of the wind wheel is more than 4.6, the width size of the heat exchanger is not favorably reduced, the whole machine is heavy, and when the length-diameter ratio L/D of the wind wheel is less than 3.5, the wind wheel is too short, the area of a single-row heat exchanger is not favorably increased, the energy efficiency of the whole machine is not favorably improved, and the design can ensure that a main flow guide part on the volute part and the size of the wind wheel keep a proper coordination relationship, so that the wind wheel can work in a rotating speed frequency band with optimized noise reduction effect and the most efficient noise reduction effect while meeting the wind speed and the wind pressure of the wind wheel, ensure that the wind resistance of the volute part, the noise reduction effect and the energy efficiency of the product are improved.

In addition, the air conditioning equipment in the above embodiment provided by the present invention may further have the following additional technical features:

in the above technical solution, D satisfies: d is more than or equal to 88mm and less than or equal to 105 mm.

In this scheme, based on aforementioned 1.8 ≦ F1+ F2)/D ≦ 2.5 and 3.5 ≦ L/D ≦ 4.6, set up 88mm ≦ D ≦ 105mm, can satisfy the amount of wind requirement of wind wheel like this, can not increase the air supply noise again simultaneously, and do benefit to complete machine size design, realize reducing the indoor side's of equipment volume, and if D is less than 88mm, there is the problem of wind wheel undersize, be unfavorable for improving the amount of wind, and increase indoor side air supply noise easily, and if D is greater than 105mm, occupy the space of heat exchanger easily, be unfavorable for reducing the indoor side's of equipment volume.

More preferably, D satisfies: d is more than or equal to 90mm and less than or equal to 100 mm.

In any of the above technical solutions, a portion of the molded line between a point closest to the wind wheel and the intersection point includes a curved line segment and a straight line segment, and the curved line segment and the straight line segment are sequentially arranged along the molded line from the point closest to the wind wheel to the intersection point.

In this scheme, design spiral case portion molded lines be located with the wind wheel nearest the point with the part between the nodical includes curve section and straightway, under the same load condition, can promote the amount of wind, and utilize the curve section can gently lead to the air current, and the curve section resistance and the pressure drop when the performance direction effect are little, can avoid the torrent noise, utilize the straightway can be in the low reaches position of curve section to further arrange in order the air current, make the air-out more smooth and easy, simultaneously, the combination form of curve section and straightway can do benefit to and restrict the air current pressure drop, the emergence development of suppression torrent, in order to improve the noise level.

In the above technical solution, one end of the straight line segment is joined to one end of the curved line segment, an end point of the other end of the straight line segment is the intersection point, and an end point of the other end of the curved line segment is a point closest to the wind wheel, so that the F1, the linear length S1 of the curved line segment, and the linear length S2 of the straight line segment satisfy: f1 ═ S1+ S2.

In this scheme, design F1 ═ S1+ S2, can further simplify the structural style of volute portion like this, make things convenient for the product to make the demolding, and this structure can do benefit to and restrict the air current pressure drop, and the emergence development of suppression torrent is in order to improve the noise level.

Preferably, the joint part of the curved section and the straight section is in smooth transition, so that airflow can smoothly transit from the surface of the curved section to the surface of the straight section, the streamline of the airflow in the volute air duct is smooth, the generation and development of turbulent flow caused by abrupt change of curvature are avoided, and the noise level is improved.

In the technical scheme, the straight line section is an inclined straight line section, so that the height of the opening defined by the volute part and the volute tongue part is gradually increased.

In this scheme, set up the straightway and be the slope straightway for along fluid flow direction, the opening height that volute portion and snail tongue portion injectd increases gradually, does benefit to the air current and keeps smooth-going, makes the streamline smooth and easy of air current in the spiral case wind channel, avoids arousing the torrent because the camber sudden change takes place and development, improves the noise level.

In any of the above technical solutions, the area a of the air return opening and the area B of the air outlet satisfy: A/B is more than or equal to 2.5 and less than or equal to 3.5.

In the scheme, based on the condition that the ratio of (F1+ F2)/D is more than or equal to 1.8 and less than or equal to 2.5 and the ratio of L/D is more than or equal to 3.5 and less than or equal to 4.6, the area A of the return air inlet and the area B of the air outlet are designed to meet the following conditions: A/B is more than or equal to 2.5 and less than or equal to 3.5, so that the length of the main flow guide part on the volute part can be coordinated with the size of the wind wheel, the driving force of the wind wheel on the air flow, the air quantity in the volute air channel influenced by the air return opening and the air outlet and the flow resistance of the main flow guide part on the volute part are coordinated, the smoothness and smoothness of the air flow line in the volute air channel are ensured, the purposes of reducing air flow noise and resistance loss are achieved, and the noise reduction effect and the energy efficiency of a product are improved.

In any one of the above technical solutions, the air conditioning apparatus further includes: the first grating is arranged at the air return opening; and/or the second grating is arranged at the air outlet.

In the scheme, the first grating is arranged at the air return opening, the first grating can play a role in blocking and protecting the air return opening to prevent foreign matters from entering the air return opening, and the first grating can cut air to flow downstream when the air enters the air return opening, so that the smoothness of entering air flow is improved, and the noise reduction effect is enhanced; set up the second grid in air outlet department, the second grid can play in air outlet department and block and the guard action, prevents that the foreign matter from getting into the air outlet, and the second grid can carry out the downflow of cutting wind when the air outlet is ventilated, promotes the ride comfort of exhaust air, strengthens the noise reduction effect, and can promote the air outlet department velocity of flow, extension air supply distance.

More specifically, the first grid is a strip-shaped grid or a perforated plate structure in the form of an ellipse, a honeycomb, a radial shape, etc., and the second grid is a strip-shaped grid or a perforated plate structure in the form of an ellipse, a honeycomb, a radial shape, etc., but of course, the second grid may also be a louver-shaped grid, or an air guide plate structure in the form of a whole strip of a straight shape or an arc shape.

In any of the above technical solutions, an included angle θ between the orientation of the air outlet and the horizontal direction is equal to or greater than 0 degree and equal to or less than 35 degrees, and/or an included angle β between the orientation of the air return inlet and the horizontal direction is equal to or greater than 0 degree and equal to or less than β and equal to or less than 15 degrees.

In the scheme, an included angle theta between the orientation of the air outlet and the horizontal direction is designed to be more than or equal to 0 degree and less than or equal to 35 degrees, wind energy is generated at the angle, large wind quantity and low noise are effectively guaranteed, meanwhile, wind can be conveniently sent out towards the front in a long distance, the requirement of room comfort is effectively met, the whole machine can be seen to be thinner and more attractive, an included angle β between the orientation of the air return inlet and the horizontal direction is designed to be more than or equal to 0 degree and less than or equal to β and less than or equal to 15 degrees, the whole machine can be seen to be thinner and more attractive, the air return range is favorably expanded, the air return quantity is favorably improved, and the problem that condensed water of a heat exchanger leaks from the air return.

In any of the above technical solutions, the air conditioning equipment is a window air conditioner or a mobile air conditioner, the wind wheel is an indoor side wind wheel of the window air conditioner or the mobile air conditioner, and the volute air duct is an indoor side volute air duct of the window air conditioner or the mobile air conditioner.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of an air conditioning apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of an air conditioning apparatus according to an embodiment of the present invention, partially in section;

fig. 3 is a schematic perspective view of an air conditioning apparatus according to an embodiment of the present invention;

FIG. 4 is a schematic view of an air conditioning apparatus according to an embodiment of the present invention, partially in section;

fig. 5 is a schematic perspective view of an air conditioning apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic view of an air conditioning apparatus according to an embodiment of the present invention, partially in section;

fig. 7 is a schematic perspective view of an air conditioning apparatus according to an embodiment of the present invention;

fig. 8 is a partial sectional view schematically illustrating an air conditioning apparatus according to an embodiment of the present invention;

fig. 9 is a partial sectional view schematically showing an air conditioning apparatus according to an embodiment of the present invention;

FIG. 10 is a projection view of a partial structure of an air conditioner according to an embodiment of the present invention in a plane perpendicular to the axis of its rotor;

fig. 11 is a partially enlarged schematic view of an air conditioning apparatus according to an embodiment of the present invention;

fig. 12 is a partially enlarged schematic view of an air conditioner according to an embodiment of the present invention;

FIG. 13 is a schematic structural view of a housing according to an embodiment of the present invention;

FIG. 14 is a schematic view of a wind turbine according to an embodiment of the present invention;

fig. 15 is a partially exploded view of an air conditioner according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 15 is:

10 outer shell, 11 air outlet, 111 hole wall, 12 air return inlet, 20 volute part, 21 abutting edge, 22 molded line, 221 curved line section, 222 straight line section, 30 volute tongue part, 40 wind wheel, 41 shaft sleeve, 42 connecting shaft, 50 heat exchanger, 51 heat exchange tube, 60 motor, 70 outdoor side part, 80 groove, 91 first grid and 92 second grid.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the air conditioning apparatus according to the first embodiment of the present invention, the air conditioning apparatus may be an integrated air conditioner (e.g., a window air conditioner or a mobile air conditioner), the integrated air conditioner includes an indoor portion and an outdoor portion 70, and of course, the air conditioning apparatus may also be an indoor unit of an air conditioner, specifically, a window air conditioner is taken as an example for description, as shown in fig. 2, 4, 6, 8, 9 and 10, the window air conditioner includes: housing 10, volute duct, and wind wheel 40.

Specifically, the casing 10 is provided with an air outlet 11 and an air return port 12; the volute air channel is positioned in the shell 10 and is communicated with the air outlet 11 and the air return opening 12, wherein the volute air channel comprises a volute part 20 and a volute tongue part 30, the volute part 20 is provided with an abutting edge 21, and the abutting edge 21 is in contact with the inner end of the air outlet 11; the wind wheel 40 is a cross-flow wind wheel, the wind wheel 40 is positioned in the volute air channel, the intersection line formed by the intersection of the inner surface of the volute part 20 and the middle section vertical to the axis of the wind wheel 40 is the molded line 22 of the volute part 20, the molded line 22 and the abutting edge 21 have an intersection point Q, the line length F1 from the point K closest to the wind wheel 40 to the intersection point Q on the molded line 22, the length F2 of the hole wall 111 of the air outlet 11, the diameter D of the wind wheel 40 and the axial length L of the wind wheel 40 meet the conditions that L/D is more than or equal to 1.8 and less than or equal to (F1+ F2)/D is less than or equal to 2.5, and L.

It should be noted that, regarding the length of the hole wall 111 of the exhaust outlet 11, it can be understood as the axial length from the contact point of the hole wall 111 of the exhaust outlet 11 and the abutting edge 21 to the outer end point of the hole wall 111 of the exhaust outlet 11, when the surface of the casing 10 at the end position of the exhaust outlet 11 and the hole wall 111 of the exhaust outlet 11 are transited by the rounded corner with the radius R, as shown in fig. 12, for example, one end point of F2 is defined as the tangent point P of the hole wall 111 of the exhaust outlet 11 and the rounded corner, as shown in fig. 10, the other end point Q of F2 can be understood similarly, and of course, in the case of the non-rounded corner structure at the end position of the exhaust outlet 11, the end point of F2 can be defined as the joint point of the hole wall 111 of the exhaust outlet 11 and. In addition, regarding the point of the profile 22 closest to the rotor 40, that is, the point of the volute 20 closest to the rotor 40, as shown in fig. 10 and 11, when a circle is drawn with the axis of the rotor 40 as the center, the tangent point K is formed when the smallest circumference w tangent to the profile 22 is tangent to the profile 22, and F1 can be further understood as the length of the profile 22 from the point K to the point Q.

In the air conditioning equipment provided by the above embodiment of the present invention, the length-diameter ratio of the wind wheel 40 satisfies: L/D is more than or equal to 3.5 and less than or equal to 4.6, and the relationship between the length F1 of the molded line 22 from the point K closest to the wind wheel 40 to the molded line 22 of the intersection point Q of the molded line 22 and the abutting edge 21 of the volute part 20, the length F2 of the hole wall 111 of the air outlet 11 and the diameter D of the wind wheel 40 is more than or equal to 1.8 (F1+ F2)/D is less than or equal to 2.5, so that the length of the main flow guide part on the volute part 20 can be ensured to be coordinated with the size of the wind wheel 40, the flow line of the airflow in the volute air duct is ensured to be smooth and smooth, the purposes of reducing airflow noise and resistance loss are achieved, and the noise reduction effect and the.

More specifically, when (F1+ F2)/D is less than 1.8, the wind wheel 40 is relatively large, the downstream effect of the volute portion 20 and the actual wind guiding efficiency of the wind wheel 40 are relatively low, the wind guiding capability of the wind wheel 40 has a large deviation in the matching relationship with the downstream effect of the volute portion 20 and the actual wind guiding efficiency of the wind wheel 40, if a silencing comfort is to be obtained, the rotation speed and the wind pressure of the wind wheel 40 need to be greatly reduced, which requires a very high heat exchange efficiency cost, and the wind wheel 40 cannot work within the rotation speed frequency band with the most efficient noise reduction effect, so that the noise reduction effect obtained by adjusting parameters such as the wind pressure and the wind speed is not obvious, and when (F1+ F2)/D is greater than 2.5, the wind wheel 40 is relatively small, the wind resistance on the volute portion 20 is relatively large, which results in an increase in the air conditioning airflow loss, turbulence noise is increased, and the experience of the equipment is decreased, and, The energy efficiency is reduced; in the scheme, the control of F1, F2 and D satisfies the conditions that (F1+ F2)/D is more than or equal to 1.8 and less than or equal to 2.5 and L/D is more than or equal to 3.5 and less than or equal to 4.6, wherein when the length-diameter ratio L/D of the wind wheel 40 is more than 4.6, the width dimension of the heat exchanger 50 is not favorably reduced, the whole machine is heavy, and when the length-diameter ratio L/D of the wind wheel 40 is less than 3.5, the wind wheel 40 is too short, the area of the single-row heat exchanger 50 is not favorably increased, the energy efficiency of the whole machine is favorably improved, the design can ensure that the main flow guide part on the volute part 20 and the size of the wind wheel 40 keep a proper coordination relationship, the wind wheel 40 can work in a rotating speed frequency band with optimized noise reduction effect and the most efficient noise reduction effect while satisfying the wind speed and the wind pressure, the wind resistance of the volute part 20 is ensured to be, The purpose of reducing the air flow loss is considered to improve the noise reduction effect and the energy efficiency of the product.

In the second embodiment of the air conditioning apparatus of the present invention, as shown in fig. 14, in addition to the features of the above-described first embodiment, the diameter D of the wind rotor 40 is further set to satisfy: d is more than or equal to 88mm and less than or equal to 105mm, wherein, through being based on the aforesaid (F1+ F2)/D is more than or equal to 2.5 and L/D is more than or equal to 3.5 and less than or equal to 4.6, set up 88mm and less than or equal to D and less than or equal to 105mm, can satisfy the amount of wind requirement of wind wheel 40 like this, can not increase the air supply noise again simultaneously, and do benefit to complete machine size design, realize reducing the indoor volume of equipment, and if D is less than 88mm, there is the too small problem of wind wheel 40, be unfavorable for improving the amount of wind, and increase indoor side air supply noise easily, and if D is greater than 105mm, easily occupy the space of heat exchanger 50, be unfavorable.

More preferably, D satisfies: d is more than or equal to 90mm and less than or equal to 100mm, and the volute air duct structure in the first embodiment can be combined to obtain a more excellent silencing effect.

In a third embodiment of the air conditioning equipment of the present invention, as shown in fig. 14 and 15, in addition to the features of any of the above embodiments, the wind wheel 40 is a cross-flow wind wheel, the requirement for the radial size of the cross-flow wind wheel 40 is small, the cross-flow wind wheel does not occupy the space of the heat exchanger 50, and is beneficial to reducing the volume of the indoor side portion of the equipment.

More specifically, as shown in fig. 14 and 15, a shaft sleeve 41 is provided at one end of the cross-flow wind wheel, a connecting shaft 42 is provided at the other end of the cross-flow wind wheel, an output shaft of a motor 60 can be connected with a shaft hole on the shaft sleeve 41, and the connecting shaft 42 of the cross-flow wind wheel can be mounted on a bearing seat to drive the cross-flow wind wheel to rotate by the motor 60.

In a fourth embodiment of the air conditioning apparatus according to the present invention, as shown in fig. 10, in addition to the features of any of the above-described embodiments, a portion of the molded line 22 located between the point K closest to the rotor 40 and the intersection point Q includes a curved line segment 221 and a straight line segment 222, and the curved line segment 221 and the straight line segment 222 are arranged in order along the molded line 22 from the point K closest to the rotor 40 toward the intersection point Q, so that, under the same load condition, the air quantity can be improved, the curve section 221 can be used for smoothly guiding the air flow, the resistance and the pressure drop of the curve section 221 when the guiding function is exerted are small, the turbulent noise can be avoided, the straight line section 222 can be used to further straighten the air flow at the downstream part of the curved line section 221, so that the air outlet is smoother, meanwhile, the combination of the curved section 221 and the straight section 222 can help to limit the pressure drop of the airflow and inhibit the occurrence and development of turbulence so as to improve the noise level.

Further, as shown in fig. 10, one end of the straight line segment 222 is joined to one end of the curved line segment 221, an end point of the other end of the straight line segment 222 is an intersection point Q, and an end point of the other end of the curved line segment 221 is a point K closest to the wind wheel 40, so that F1, a linear length S1 of the curved line segment 221, and a linear length S2 of the straight line segment 222 satisfy: f1 ═ S1+ S2, which can further simplify the structure of the volute section 20, facilitate the product manufacture and the mould production, and the structure can be beneficial to limit the airflow pressure drop and inhibit the generation and development of turbulent flow, so as to improve the noise level.

Preferably, as shown in fig. 10, the junction of the curved section 221 and the straight section 222 is smoothly transited, which facilitates the smooth transition flow of the airflow from the surface of the curved section 221 to the surface of the straight section 222, so that the streamline of the airflow in the volute air duct is smooth, the occurrence and development of turbulence caused by the abrupt change of curvature are avoided, and the noise level is improved.

More preferably, as shown in fig. 10, the straight line segment 222 is an inclined straight line segment, so that the height of the opening defined by the volute portion 20 and the volute tongue portion 30 is in a gradually increasing variation trend, wherein the straight line segment 222 is arranged to be an inclined straight line segment, so that the height of the opening defined by the volute portion 20 and the volute tongue portion 30 is gradually increased in the fluid flowing direction, the outlet pressure drop can be realized, the smoothness of the airflow is favorably maintained, the streamline of the airflow in the volute duct is smooth, the occurrence and development of turbulence caused by the sudden change of curvature are avoided, and the noise level is improved.

More specifically, as shown in fig. 10, the straight line segment 222 is an inclined straight line segment inclined with respect to the horizontal direction, and the molded line of the portion of the volute tongue 30 corresponding to the straight line segment 222 is a horizontal line segment.

In the fifth embodiment of the air conditioning apparatus of the present invention, preferably, in addition to the features of any of the above embodiments, the area a of the return air opening 12 and the area B of the air discharge opening 11 are further defined to satisfy: 2.5. ltoreq. A/B. ltoreq.3.5, wherein the area A of the return air inlet 12 and the area B of the exhaust outlet 11 are designed to satisfy, based on the aforementioned 1.8. ltoreq. F1+ F2)/D. ltoreq.2.5 and 3.5. ltoreq. L/D. ltoreq.4.6: A/B is more than or equal to 2.5 and less than or equal to 3.5, so that the length of the main flow guide part on the volute part 20 can be coordinated with the size of the wind wheel 40, and the driving force of the wind wheel 40 on the air flow, the air quantity in the volute air channel influenced by the air return opening 12 and the air outlet 11 and the flow resistance of the main flow guide part on the volute part 20 are coordinated, so that the smoothness and smoothness of the air flow line in the volute air channel are ensured, the purposes of reducing air flow noise and air flow loss are achieved, and the noise reduction effect and the energy efficiency of a product are improved.

With respect to the above embodiment, it is understood that, as shown in fig. 2, the air return opening 12 and the air exhaust opening 11 are preferably substantially rectangular or square, and when the width of the air return opening 12 is the same as that of the air exhaust opening 11, the ratio of the height Y2 of the air return opening 12 to the height Y1 of the air exhaust opening 11, Y2/Y1, is equal to the ratio of the area a of the air return opening 12 to the area B of the air exhaust opening 11, that is, the height Y2 of the air return opening 12 and the height Y1 of the air exhaust opening 11 also satisfy: the height Y2 of the return air inlet is more than or equal to 2.5/the height Y1 of the air outlet is less than or equal to 3.5.

In a sixth embodiment of the air conditioning equipment of the present invention, as shown in fig. 1, the air conditioning equipment further includes a first grille 91, the first grille 91 is disposed at the air return opening 12, the first grille 91 can play a role in blocking and protecting the air return opening 12 to prevent foreign matters from entering the air return opening 12, and the first grille 91 can cut the air downstream when the air enters the air return opening 12 to improve the smoothness of the entering air flow and enhance the noise reduction effect. More specifically, the first grid 91 may be a perforated plate structure having an elliptical shape, a honeycomb shape, and a radial shape, in addition to the stripe-shaped grid.

It is to be noted that, in calculating the area a of the return air opening 12, the area a of the return air opening 12 includes an area of a portion of the return air opening 12 which is shielded by the first grill 91.

In a seventh embodiment of the air conditioning equipment of the present invention, as shown in fig. 1 and 3, the air conditioning equipment further includes a second grille 92, the second grille 92 is disposed at the air outlet 11, the second grille 92 can block and protect the air outlet 11 to prevent foreign matters from entering the air outlet 11, and the second grille 92 can cut the air downstream when the air outlet 11 exhausts air, so as to improve the smoothness of the exhaust air flow, enhance the noise reduction effect, and can improve the flow speed at the air outlet to prolong the air supply distance. More specifically, the second grille 92 may be a strip grille, a louver grille, or a whole straight or arc-shaped air deflector structure.

It is to be noted that, in calculating the area B of the air outlet 11, the area B of the air outlet 11 includes an area of a portion of the air outlet 11 which is blocked by the second grill 92.

In the eighth embodiment of the air conditioning equipment of the present invention, as shown in fig. 1 and fig. 2, in addition to the features of the first to seventh embodiments, an included angle θ between the orientation m of the air outlet 11 and the horizontal direction h is further limited to 0 °, and the wind energy generated at this angle is favorable for sending wind to the front and far away while effectively ensuring a large wind volume and low noise, so as to effectively meet the comfort requirement of a room, and make the whole machine look thinner and more beautiful, and further limit an included angle β between the orientation n of the air return opening 12 and the horizontal direction h to 0 °, so that the design is favorable for improving the return wind volume, and the shape is beautiful.

Preferably, as shown in fig. 13, the air outlet 11 is located at the upper side of the air return opening 12, forming an upper air outlet and a lower air return structure.

In the ninth embodiment of the air conditioning equipment according to the present invention, as shown in fig. 3 and 4, in addition to the features of the first to seventh embodiments, the included angle between the orientation m of the air outlet 11 and the horizontal direction h is further defined as θ, it can be understood that the included angle between the outer end surface of the air outlet 11 (the outer end surface of the air outlet 11 along the normal direction of m) and the vertical direction v is also correspondingly defined as θ, and the aforementioned θ satisfies 0 ° or more and 35 ° or less, and the angle can effectively ensure large air volume and low noise, and is favorable for the wind to be sent out toward the front, effectively meet the comfort requirement of the room, and can make the whole machine look thinner and more beautiful, and further defines the included angle β between the orientation n of the air return 12 and the horizontal direction h as 0 °, and the design is favorable for improving the air return volume and has an attractive appearance.

Preferably, as shown in fig. 13, the air outlet 11 is located at the upper side of the air return opening 12 to form an upper air outlet and lower air return structure, and more preferably, the direction m of the air outlet 11 is inclined upward relative to the horizontal direction h to increase the condensed air conveying distance.

In the tenth embodiment of the air conditioning equipment of the present invention, as shown in fig. 5 and fig. 6, in addition to the features of the first to seventh embodiments, an included angle θ between the orientation m of the air outlet 11 and the horizontal direction h is further defined to be 0 °, which angle is favorable for sending wind to the front surface for a long distance while effectively ensuring a large wind volume and low noise, so as to effectively meet the comfort requirement of a room, and make the whole machine look thinner and more beautiful, and further define an included angle between the orientation n of the air return opening 12 and the horizontal direction h to be β, it can be understood that an included angle between the outer end surface of the air return opening 12 (the outer end surface of the air return opening 12 along the normal direction of n) and the vertical direction v is also β, and the aforementioned β satisfies that 0 ° β is less than or equal to 15 °, which design can make the whole machine look thinner and more beautiful, is favorable for expanding the return air volume, and the problem that the condensate water leaks from the air return opening 12 due to too oblique angle of the heat exchanger does not occur.

Preferably, as shown in fig. 13, the exhaust outlet 11 is located at the upper side of the return air inlet 12 to form an upper-side air outlet and lower-side air return structure, and more preferably, the orientation n of the return air inlet 12 is inclined downward relative to the horizontal direction h, which can facilitate the hot air deflected upward due to self-floating force to flow back along the return air inlet 12, thereby increasing the air return amount.

In the eleventh embodiment of the air conditioning equipment of the present invention, as shown in fig. 7 and 8, in addition to the features of the first to seventh embodiments, the included angle between the direction m of the air outlet 11 and the horizontal direction h is further defined as θ, it can be understood that the included angle between the outer end surface of the air outlet 11 (the outer end surface of the air outlet 11 along the normal direction m) and the vertical direction v is also defined as θ, where θ satisfies 0 ° or more and 35 ° or less, and this angle is favorable for the wind to be sent out to the front surface in a long distance while effectively ensuring large wind volume and low noise, and effectively satisfying the comfort requirement of the room, and can make the whole machine look thinner and more beautiful, and further defines the included angle between the direction n of the air return 12 and the horizontal direction h as β, it can be understood that the included angle between the outer end surface of the air return 12 (the outer end surface of the air return 12 along the normal direction n) and the vertical direction v is also correspondingly β, and the β satisfies 0 ° or more β ° or less and 15 ° or more beautiful, and this design can make the whole machine look thinner and is favorable for the air return, and the condensate water leakage problem of the heat exchanger, and the air flow rate will not be too large.

Preferably, as shown in fig. 13, the air outlet 11 is located on the upper side of the air return opening 12 to form an upper air outlet and lower air return structure, and more preferably, the orientation m of the air outlet 11 is inclined upward relative to the horizontal direction h to increase the condensed air conveying distance, and the orientation n of the air return opening 12 is inclined downward relative to the horizontal direction h, which may facilitate the upward hot air flowing due to the self-floating force to flow back along the air return opening 12 to increase the air return amount.

More specifically, of course, the outer end of the air outlet 11 is not necessarily planar as shown in fig. 2 and fig. 4, and it can be understood by those skilled in the art that the outer end of the air outlet 11 may also be in a cambered state, specifically, when the air outlet 11 is in a cambered state, the direction m of the air outlet 11 is the direction of the outer normal of the connecting line between the outer end point of the upper wall of the middle section of the air outlet 11 and the outer end point of the lower wall of the air outlet 11, and when the air outlet 11 is planar, the direction m of the air outlet 11 is the direction of the outer normal (perpendicular to the air outlet 11) of the middle section of the air outlet.

Of course, the air return opening 12 is not necessarily planar as shown in fig. 2 and fig. 6, and it can be understood by those skilled in the art that the outer end of the air return opening 12 may also be in an arc state, specifically, when the outer end of the air return opening 12 is in an arc state, the direction n of the air return opening 12 is the direction of the outer normal n of the connecting line between the outer end point of the upper wall of the middle section of the air return opening 12 and the outer end point of the lower wall of the air return opening, and when the air return opening 12 is planar, the direction n of the air return opening 12 is the direction of the outer normal n (perpendicular to the air return opening 12) of the middle section of the air.

In any of the above embodiments, as shown in fig. 1, the top wall of the casing 10 is provided with a groove 80 formed by partially recessing downward, the groove 80 is used for the air conditioner to be fitted in a wall or a window, and preferably the groove 80 is located between the indoor side portion and the outdoor side portion 70 of the air conditioner.

In any of the above embodiments, as shown in fig. 2, in addition to the features of any of the above embodiments, the air conditioning apparatus is further defined to further include a heat exchanger 50, the heat exchanger 50 is preferably of a multi-fold structure and is disposed outside the wind wheel 40 in a semi-enclosed manner, and more preferably, as shown in fig. 2, the heat exchanger 50 intersects a horizontal section JJ of the lower end point of the wind wheel 40, wherein the casing 10 is provided with the return air opening 12 at a position below the air outlet 11, the heat exchanger 50 has a plurality of heat exchange tubes 51, and the number of the heat exchange tubes 51 on the upper side of the horizontal section JJ is less than the number of the heat exchange tubes 51 on the lower.

It should be noted that, as shown in fig. 2, a horizontal tangent plane JJ of the lower end point of rotor 40 is a horizontal plane tangent to the lowest point of the outer circumference of rotor 40. In addition, the horizontal tangent plane JJ intersects the heat exchanger 50, and it is worth to be noted that, taking the example that the number of the heat exchange tubes 51 of the heat exchanger 50 located at the upper side of the horizontal tangent plane JJ is less than the number of the heat exchange tubes 51 located at the lower side of the tangent plane JJ, for the heat exchange tubes 51 of the heat exchanger 50 intersecting the horizontal tangent plane JJ, if more than half of the heat exchange tubes 51 intersecting the horizontal tangent plane JJ are located at the lower side of the horizontal tangent plane JJ, the number of the heat exchange tubes 51 is counted as the heat exchange tubes 51 located; if more than half of the heat exchange tubes 51 intersecting the horizontal section JJ are positioned on the upper side of the horizontal section JJ, the heat exchange tubes 51 are counted as the heat exchange tubes 51 positioned on the upper side of the horizontal section JJ; if half of the heat exchange tubes 51 intersecting the horizontal section JJ are positioned on the upper side of the horizontal section JJ and the other half are positioned on the lower side of the horizontal section JJ, the number of the heat exchange tubes 51 of the heat exchanger 50 positioned on the lower side of the horizontal section JJ is 17 and the number of the heat exchange tubes 51 positioned on the upper side of the horizontal section JJ is 7, for example, as shown in fig. 2.

In any of the above embodiments, the air conditioning equipment is a window air conditioner or a mobile air conditioner, the wind wheel 40 is an indoor side wind wheel of the window air conditioner or the mobile air conditioner, and the volute air duct is an indoor side volute air duct of the window air conditioner or the mobile air conditioner.

In summary, the length-diameter ratio of the wind wheel of the air conditioning equipment provided by the invention satisfies the following requirements: L/D is more than or equal to 3.5 and less than or equal to 4.6, and the relationship between the molded line length F1 from the point K closest to the wind wheel on the molded line of the volute part to the molded line length Q of the molded line and the abutting edge intersection point Q of the molded line and the volute part, the hole wall length F2 of the air outlet and the diameter D of the wind wheel is more than or equal to 1.8 and less than or equal to (F1+ F2)/D and less than or equal to 2.5, so that the length of the main flow guide part on the volute part can be ensured to be coordinated with the size of the wind wheel, the smoothness and smoothness of the airflow line in the volute air duct can be ensured, the purposes of reducing airflow noise and resistance loss are further achieved, the energy efficiency of products is improved, the running noise of the equipment can be reduced to less than.

In the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air conditioning apparatus, characterized by comprising:

the shell is provided with an air outlet and an air return inlet;

the volute air channel is positioned in the shell and is communicated with the air outlet and the air return inlet, the volute air channel comprises a volute part and a volute tongue part, the volute part is provided with a butting edge, and the butting edge is contacted with the inner end of the air outlet;

the wind wheel is a cross-flow wind wheel, the wind wheel is positioned in the volute air duct, an intersecting line formed by the intersection of the inner surface of the volute part and a middle section vertical to the axis of the wind wheel is a molded line of the volute part, the molded line and the abutting edge have an intersecting point, a line length F1 from a point closest to the wind wheel to the intersecting point on the molded line, a hole wall length F2 of the air outlet, a diameter D of the wind wheel and an axial length L of the wind wheel meet the conditions that L/D is not less than 1.8 and not more than (F1+ F2)/D is not more than 2.5, and L/D is not less than 3.5 and not more than 4.6;

the length F2 of the hole wall of the air outlet is the axial length from the contact point of the hole wall of the air outlet and the abutting edge to the outer end point of the hole wall of the air outlet.

2. Air conditioning apparatus according to claim 1,

the D satisfies: d is more than or equal to 88mm and less than or equal to 105 mm.

3. Air conditioning apparatus according to claim 1 or 2,

the part of the molded line between the point closest to the wind wheel and the intersection point comprises a curve section and a straight section, and the curve section and the straight section are sequentially arranged along the molded line from the point closest to the wind wheel to the intersection point.

4. Air conditioning apparatus according to claim 3,

one end of the straight line section is connected with one end of the curved line section, the endpoint of the other end of the straight line section is the intersection point, the endpoint of the other end of the curved line section is the point which is closest to the wind wheel, and the F1, the linear length S1 of the curved line section and the linear length S2 of the straight line section meet the following requirements: f1 ═ S1+ S2.

5. Air conditioning apparatus according to claim 3,

the straight line section is an inclined straight line section, so that the height of an opening defined by the volute part and the volute tongue part is gradually increased along the flowing direction of the fluid.

6. Air conditioning apparatus according to claim 1 or 2,

the area A of the air return inlet and the area B of the air outlet meet the following conditions: A/B is more than or equal to 2.5 and less than or equal to 3.5.

7. Air conditioning apparatus according to claim 1 or 2,

the orientation of air exit satisfies with the contained angle theta of horizontal direction: theta is more than or equal to 0 degree and less than or equal to 35 degrees, and/or

The included angle β between the orientation of the air return opening and the horizontal direction meets the requirement that β is more than or equal to 0 degree and less than or equal to 15 degrees.

8. Air conditioning apparatus according to claim 1 or 2,

the air conditioning equipment is a window type air conditioner or a mobile air conditioner, the wind wheel is an indoor side wind wheel of the window type air conditioner or the mobile air conditioner, and the volute air channel is an indoor side volute air channel of the window type air conditioner or the mobile air conditioner.