Pump blade structure, pump body and air conditioner

Abstract

The application provides a pump blade structure, a pump body and an air conditioner, wherein the pump blade structure comprises a plurality of blades and a rotating shaft, the blades are arranged on the rotating shaft, the plurality of blades are arranged at intervals along the circumference of the rotating shaft, the blade comprises a trailing edge, a suction surface and a pressure surface, the suction surface, the trailing edge and the pressure surface are sequentially connected, the suction surface has a line type Sl, the pressure surface has a line type Pl, the line type Sl and the line type Pl are smooth transition arcs, the trailing edge has a chord line, the chord line is perpendicular to the line type Sl, and the chord line is perpendicular to the line type Pl. According to the application, the technical problem of the low water pump lift in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioners, and particularly relates to a pump blade structure, a pump body and an air conditioner. BACKGROUND

[0002] At present, the mainstream of the market is the machine in the cooling mode, because the water vapor in the air will form a large amount of condensate water on the surface of the condenser when it is cold, and finally flow into the special water collecting container under the condenser. With the increase of cooling demand, a large amount of condensate water will be produced in the water collecting container. In order to discharge the condensate water to the predetermined position in time and efficiently, a drainage pump is installed beside the water collecting container of the machine. Due to the special installation position and structural design, the drainage pump is required to have high drainage efficiency and drainage performance. The drainage pump of the machine currently has the defects of low head and low drainage efficiency.

[0003] Since the water pump in the prior art has the technical problems of low head and low drainage efficiency, the present application provides a pump blade structure, a pump body and an air conditioner. SUMMARY

[0004] Therefore, the present application provides a pump blade structure, a pump body and an air conditioner, which can solve the technical problem of low head of the water pump in the prior art.

[0005] In order to solve the above problems, the present application provides a pump blade structure, comprising: a plurality of blades and a rotating shaft, the blades are arranged on the rotating shaft, and a plurality of the blades are arranged at intervals along the circumference of the rotating shaft, the blade comprises a trailing edge, a suction surface and a pressure surface, the suction surface, the trailing edge and the pressure surface are connected in sequence, the suction surface has a line type Sl, the pressure surface has a line type Pl, the line type Sl and the line type Pl are smooth transition arcs, the trailing edge has a chord line, the chord line is perpendicular to the line type Sl, and the chord line is perpendicular to the line type Pl.

[0006] In some embodiments, the sine value of the chord line is L1, and the cosine value of the chord line is L2, which satisfies L1 [0.3mm, 0.4mm], and L2 [0.15mm, 0.2mm].

[0007] In some embodiments, the pump blade structure comprises a water pressure ring, the blade is located in the water pressure ring, the cross section of the water pressure ring is a projection surface, the center of the water pressure ring is O(0, 0) point, the line type Sl satisfies f(x) = a1*x^6 + a2*x^5 + a3*x^4 + a4*x^3 + a5*x^2 + a6*x + a7, wherein,

[0008] a1∈(-8.569e-05,-7.205e-05); a2∈(-0.005041,-0.004307); a3∈(-0.1232,-0.107); a4∈(-1.61,-1.424); a5∈(-12.02,-10.84); a6∈(-49.67,-45.72); a7∈(-80.91,-75.53), x is the vertical distance between point x on the X-axis and the center O, and f(x) represents the vertical height of the Y-axis on the plane.

[0009] In some embodiments, the pump blade structure includes a pressure circle, the blade is located in the pressure circle, the cross section of the pressure circle is the projection plane, the center of the pressure circle is the point O(0, 0), the linear type Pl satisfies g(x) = b1*x^6 + b2*x^5 + b3*x^4 + b4*x^3 + b5*x^2 + b6*x + b7, wherein,

[0010] b1∈(-1.149e-05,-1.014e-05); b2∈(-0.0007356,-0.0006595); b3∈(-0.01988,-0.01813); b4∈(-0.2946,-0.2734); b5∈(-2.621,-2.48); b6∈(-13.95,-13.45); b7∈(-26.01,-25.3), x is the vertical distance between point x on the X-axis and the center O, and g(x) represents the vertical height of the Y-axis on the plane.

[0011] In some embodiments, the pump blade structure includes a pressure circle, the blade is located in the pressure circle, the blade includes a top portion, the suction surface, the top portion and the pressure surface are sequentially connected, the top portion is connected with the trailing edge, the top portion has a first linear type, the longitudinal cross section of the pressure circle is the projection plane, when the pump blade structure is installed on the impeller, the center point of the impeller is the center O4, the coordinate origin of the projection plane is defined as O4, the coordinate of Q3 is defined as (D3, H1), which satisfies H(x) = p1*x^6 + p2*x^5 + p3*x^4 + p4*x^3 + p5*x^2 + p6*x + p7, wherein, p1∈(-3.127e-05,-2.801e-05); p2∈(-0.001997,-0.001814); p3∈(-0.05359,-0.04936); p4∈(-0.7779,-0.7268); p5∈(-6.52,-6.178); p6∈

[0012] (-30.19, -28.99); p7∈(-55.06, -53.34), x is the vertical distance of point x on the X axis and the center O4 of the circle, and H(x) represents the vertical height of the Y axis and the center O4 of the circle.

[0013] In some embodiments, the pump blade structure comprises a water pressure ring, the blade is located in the water pressure ring, and the radius R5 of the water pressure ring is in the range of [16mm, 17mm].

[0014] The application also provides a pump body comprising the above pump blade structure, and the pump body further comprises a base, and a plurality of convex ribs are arranged on the inner wall surface of the base in the circumferential direction of the base.

[0015] In some embodiments, a plurality of heat dissipation openings are arranged on the base, the arc length of the heat dissipation opening is L, the arc length L of the heat dissipation opening is determined by a circle with a radius Rq, and the central angle of the arc length L of the heat dissipation opening is θ, which satisfies L=πR q θ / 180, wherein θ∈[20°, 30°].

[0016] In some embodiments, the pump body further comprises a volute, and the water inlet of the volute is provided with a filter assembly.

[0017] The application also provides an air conditioner comprising the above pump body.

[0018] The application provides a pump blade structure, a pump body and an air conditioner.

[0019] By intersecting and being perpendicular to the linear type Sl by the chord line and intersecting and being perpendicular to the linear type Pl by the chord line, the performance of the drainage pump is effectively limited by the impeller, and the drainage performance and the drainage efficiency are not high. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. The drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creative labor.

[0021] Figure 1 is an assembly structure diagram of the pump blade structure of the application;

[0022] Figure 2 is an explosion diagram of the pump body of another embodiment of the application;

[0023] Figure 3 is a structural schematic diagram of the pump body of another embodiment of the application;

[0024] Figure 4 is a structural diagram of the pump vane structure of the present application Figure 1 ;

[0025] Figure 5 is a structural diagram of the volute in the pump body of another embodiment of the present application

[0026] Figure 6 is a structural diagram of the pump vane structure of the present application Figure 2 ;

[0027] Figure 7 is a structural diagram of the pump vane structure of the present application Figure 3 ;

[0028] Figure 8 is a structural diagram of the pump vane structure of the present application Figure 4 ;

[0029] Figure 9 is a structural diagram of the pump vane structure of the present application Figure 5 ;

[0030] Figure 10 is a structural diagram of the pump vane structure of the present application Figure 6 ;

[0031] Figure 11 is a structural diagram of the pump vane structure of the present application Figure 7 ;

[0032] Figure 12 is a structural diagram of the base in the pump body of another embodiment of the present application

[0033] Figure 13 is a structural diagram of the base in the pump body of another embodiment of the present application Figure 2 ;

[0034] Figure 14 is a structural diagram of the filter assembly in the pump body of another embodiment of the present application Figure 1 ;

[0035] Figure 15 is a structural diagram of the filter assembly in the pump body of another embodiment of the present application Figure 2 ;

[0036] Figure 16 is a structural diagram of the filter assembly in the pump body of another embodiment of the present application Figure 3 .

[0037] Reference numerals are:

[0038] 1, volute; 2, impeller; 3, support; 4, motor; 5, foot pad; 6, base; 7, water blocking ring; 8, sealing ring; 9, water outlet pipe; 10, filter assembly; 11, water hitting part; 12, chord line; 13, pump blade water inlet; 14, water pressing ring; 15, rotating shaft; 16, guide vane; 17, blade; 18, top; 19, suction surface; 20, pressure surface; 21, bottom; 22, trailing edge; 23, leading edge; 24, connecting surface; 26, first circle; 27, second circle; 28, first line type; 29, buckle; 30, pump body inlet; 31, volute water outlet; 32, filter; 33, convex rib; 34, heat dissipation opening; 35, limiting ring; 37, limiting hole. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work, fall within the scope of protection of the present application.

[0040] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without being contrary to the description, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0041] For ease of description, spatial relative terms such as "on", "above", "top", "bottom", and the like can be used herein for ease of description to describe one device or feature's spatial position relation to another device or feature as illustrated in the figures. It should be understood that the spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, a device described as "above" or "on" other devices or structures would then be oriented "below" or "on" the other devices or structures. Accordingly, the exemplary term "above" can encompass both an orientation of above and below. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial relative descriptors used herein interpreted accordingly.

[0042] In addition, it should be noted that the use of "first", "second", and the like words to qualify parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0043] For reference Figures 1-16 As shown, according to the embodiment of the present application, a pump blade structure is provided, comprising: a plurality of blades 17 and a rotating shaft 15, the blades 17 are arranged on the rotating shaft 15, a plurality of the blades 17 are arranged at intervals along the circumference of the rotating shaft 15, the blade 17 comprises a trailing edge 22, a suction surface 19 and a pressure surface 20, the suction surface 19, the trailing edge 22 and the pressure surface 20 are connected in sequence, the suction surface 19 has a line type Sl, the pressure surface 20 has a line type Pl, the line type Sl and the line type Pl are smooth transition arcs, the trailing edge 22 has a chord line 12, the chord line 12 is perpendicular to the line type Sl, and the chord line 12 is perpendicular to the line type Pl. In this technical solution, the chord line 12 is a connecting line between the two ends of the trailing edge 22, the trailing edge 22 is a circular arc type, and for reference Figure 8 As shown, the leading edge 23 is composed of a circular arc segment intersected by an inner limit first circle 26 with a radius R2, and the trailing edge 22 is composed of circular arc segments tangent to the circle centers O1 and O2 with radii R3 and R4, respectively. Wherein, R3 = R4 ∈ [0.20mm, 0.22mm], preferably R3 = R4 = 0.21mm; R3 is tangent to the chord line Sl of the blade suction surface; R4 is tangent to the chord line Pl of the blade pressure surface; wherein the trailing edge starting thickness of the blade profile is determined by the chord line 12, and the chord line 12 is perpendicular to the line type Sl and the line type Pl. By making the chord line 12 perpendicular to the line type Sl and the line type Pl, the problem of low drainage performance and efficiency due to the limitation of the impeller on the performance of the drainage pump is effectively solved.

[0044] In some embodiments, the sine value of the chord line 12 is L1, and the cosine value of the chord line 12 is L2, which satisfies L1∈[0.3mm, 0.4mm], L2∈[0.15mm, 0.2mm]. In this technical solution, L1 and L2 are respectively the sine value and the cosine value of the thickness of the trailing edge of the airfoil, wherein L1 and L2 are used to determine the initial thickness of the airfoil, while ensuring the structural strength of the trailing edge of the airfoil. The top portion 18 has a first line type 28, and each dimension of the first line type 28 has the following requirements: L1∈[0.3mm, 0.4mm], the optimal execution distance L1=0.38959mm, L2∈[0.15mm, 0.2mm], and the optimal execution distance L2=0.18849mm.

[0045] In some embodiments, the pump blade structure includes a water pressure circle 14, the blade 17 is located in the water pressure circle 14, the cross section of the water pressure circle 14 is a projection plane, the center of the water pressure circle 14 is O(0, 0) point, and the line type Sl satisfies f(x)=a1*x^6+a2*x^5+a3*x^4+a4*x^3+a5*x^2+a6*x+a7, wherein,

[0046] a1∈(-8.569e-05,-7.205e-05); a2∈(-0.005041,-0.004307); a3∈(-0.1232,-0.107); a4∈(-1.61,-1.424); a5∈(-12.02,-10.84); a6∈(-49.67,-45.72); a7∈(-80.91,-75.53), x is the vertical distance of point x on the X axis from the center O, and f(x) represents the vertical height of the Y axis on the plane.

[0047] The pump blade airfoil is composed of a circular arc line Sl and a line Pl, which is combined with reference to Figure 7shown, wherein it is provided that in a two-dimensional plane with the center O (0,0), the coordinate points q1 (X1, Y1), q2 (X2, Y2) are two points on the second circle 27 with a radius R1, R1 e [7mm, 8mm], preferably R1 = 7.5mm, the second circle 27 is tangent to the blade trailing edge 22, the blade pressure surface profile Pl and the blade suction surface profile Sl start at the coordinate points q2, q1, respectively, and end at the intersection on an inner limit circle with a radius R2, R2 e [16mm, 17mm], preferably R1 = 16.5mm; the inner limit circle with a radius R2 intersects the second circle 27 of the pump blade. The blade thickness distribution is formed by the blade pressure surface profile Pl and the blade suction surface profile Sl, respectively, i.e. the blade thickness distribution is determined by the blade suction surface profile Sl and the blade pressure surface profile Pl by the functions f(x), g(x), respectively. The coordinate points q1 and q2, the functions f(x), g(x) finally have the following requirements:

[0048] Optimal execution coordinate points q2(-5.04681, 5.72267), q1(-5.4364, 5.53418);

[0049] Blade suction surface profile Sl execution function f(x)

[0050] f(x) = a1*x^6 + a2*x^5 + a3*x^4 + a4*x^3 + a5*x^2 +

[0051] a6*x + a7

[0052] wherein: a1 e (-8.569e-05, -7.205e-05)

[0053] a2 e (-0.005041, -0.004307)

[0054] a3 e (-0.1232, -0.107)

[0055] a4 e (-1.61, -1.424)

[0056] a5 e (-12.02, -10.84)

[0057] a6 e (-49.67, -45.72)

[0058] a7 e (-80.91, -75.53)

[0059] wherein a1, a2, a3, a4, a5, a6, a7 represent the coefficients of the Sl curve f(x), in a two-dimensional plane, x is the vertical distance of the point x on the X-axis from the center O, and f(x) represents the vertical height on the Y-axis in the plane.

[0060] Optimal execution function input:

[0061] f(x) = -7.887e-05 * x 6 -0.004674 * x 5 -0.1151 * x 4 -1.517 * x 3 -11.43 * x 2 -47.698 * x - 78.22

[0062] In some embodiments, the pump blade structure comprises a water pressure circle 14, the blade 17 is located in the water pressure circle 14, the cross section of the water pressure circle 14 is the projection plane, the center of the water pressure circle 14 is the O(0,0) point, the linear Pl satisfies g(x) = b1*x^6 + b2*x^5 + b3*x^4 + b4*x^3 + b5*x^2 + b6*x + b7, wherein,

[0063] b1∈(-1.149e-05,-1.014e-05); b2∈(-0.0007356,-0.0006595); b3∈(-0.01988,-0.01813); b4∈(-0.2946,-0.2734); b5∈(-2.621,-2.48); b6∈(-13.95,-13.45); b7∈(-26.01,-25.3), x is the vertical distance of point x on the X axis from the center O, and g(x) represents the vertical height of the Y axis on the plane.

[0064] In the technical scheme, the blade pressure surface profile Pl executes the function g(x)

[0065] g(x) = b1*x^6 + b2*x^5 + b3*x^4 + b4*x^3 + b5*x^2 +

[0066] b6*x + b7

[0067] In the formula: b1∈(-1.149e-05,-1.014e-05)

[0068] b2∈(-0.0007356,-0.0006595)

[0069] b3∈(-0.01988,-0.01813)

[0070] b4∈(-0.2946,-0.2734)

[0071] b5∈(-2.621,-2.48)

[0072] b6∈(-13.95,-13.45)

[0073] b7 e (-26.01, -25.3)

[0074] wherein b1, b2, b3, b4, b5, b6, b7 are coefficients of the Pl curve g(x), x is the perpendicular distance of point x on the X axis from the center O, and g(x) represents the perpendicular height of the Y axis on the plane.

[0075] Optimal execution function input:

[0076] g(x) = -1.081e-05 * x 6 -0.0006975 * x 5 -0.019 * x 4 -0.284 * x 3 -2.55 * x 2 -13.7 * x - 25.65.

[0077] In some embodiments, the pump blade structure comprises a pressure circle 14, the blade 17 is located in the pressure circle 14, the blade 17 comprises a top 18, the suction surface 19, the top 18 and the pressure surface 20 are sequentially connected, the top 18 is connected with the trailing edge 22, the top 18 has a first line type 28, the longitudinal section of the pressure circle 14 is the projection plane, when the pump blade structure is installed on the impeller 2, the center point of the impeller 2 is the center O4, the coordinate origin of the projection plane is defined as O4, the coordinate point Q3 is the starting coordinate point of the first line type (28), and the coordinates of Q3 are defined as (D3, H1), which satisfy H(x) = p1*x^6 + p2*x^5 + p3*x^4 + p4*x^3 + p5*x^2 + p6*x + p7, wherein p1 e (-3.127e-05, -2.801e-05); p2 e (-0.001997, -0.001814); p3 e (-0.05359, -0.04936); p4 e (-0.7779, -0.7268); p5 e (-6.52, -6.178); p6 e (-30.19, -28.99); p7 e (-55.06, -53.34), x is the perpendicular distance of point x on the X axis from the center O4, and H(x) represents the perpendicular height of the Y axis from the center O4. In the technical scheme, the pump blade 17 is a vertical blade, which is convenient for injection molding, and the combination is described in detail in the description. Figure 9As shown, the blade structure is composed of a blade top 18, a blade bottom 21, a blade leading edge 23, a blade trailing edge 22, a blade pressure surface 20 front, a blade suction surface 19 rear, and a guide vane 16 guide arc 24, the blade pressure surface 20 and the blade suction surface 19 are the front and rear surfaces of the blade; the guide arc 24 of the guide vane 16 is the line type at the connection between the guide vane 16 and the blade 17, the guide arc 24 is arc-shaped, and extends from any top corner of the blade 17 to the bottom corner of the blade 17. The top corner and the bottom corner are two corners arranged opposite to each other, and the top corner and the bottom corner are two corners on the same surface.

[0078] The pump blade top 18 is determined by a first line type 28, which is completely composed of an arc segment, and the arc length of the first line type 28 intersects with an inner limit first circle 26 with a radius R2. For reference, see Figure 11 As shown, the coordinate point of Q3 in the specified plane is Q3(D3, H1), Q3 is the starting coordinate point of the first line type 28, and ends at the inner limit first circle 26 with a radius R2. R2 ∈ [16mm, 17mm], preferably R1 = 16.5mm; the blade intersects with the inner limit first circle 26. The first line type 28 of the blade top 17 is determined by the function H(x), and the heights of the blade trailing edge 22 and the leading edge 23 are determined by H1 and H2 respectively, which affect the work done of the impeller during the operation of the drainage pump, i.e. affect the performance of the drainage pump, and each size meets the following requirements: the optimal execution coordinate point Q3(-5.4364, 3.2294); H1 ∈ [3mm, 4mm], preferably the height H1 = 3.2294mm;

[0079] H2 ∈ [0.15mm, 0.2mm], preferably the height H2 = 0.15114mm.

[0080] H(x) = p1*x^6 + p2*x^5 + p3*x^4 + p4*x^3 + p5*x^2 +

[0081] p6*x + p7

[0082] In the formula: p1 ∈ (-3.127e-05, -2.801e-05)

[0083] p2 ∈ (-0.001997, -0.001814)

[0084] p3 ∈ (-0.05359, -0.04936)

[0085] p4 ∈ (-0.7779, -0.7268)

[0086] p5 ∈ (-6.52, -6.178)

[0087] p6 ∈ (-30.19, -28.99)

[0088] p7∈(-55.06,-53.34)

[0089] wherein p1, p2, p3, p4, p5, p6, p7 are coefficients of the curve H(x), x is the vertical distance of the point x on the X axis from the center O4, and H(x) represents the vertical height of the Y axis from the center O4 on the two-dimensional plane.

[0090] Optimal execution function input:

[0091] H(x) = -2.964e-05 * x^6 - 0.001906 * x^5 - 0.05148 * x^4 - 0.7524

[0092] * x^3 - 6.349 * x^2 - 29.59 * x - 54.2

[0093] In some embodiments, the pump blade structure comprises a water pressure ring 14, the blade 17 is located in the water pressure ring 14, and the radius R5 of the water pressure ring 14 is in the range of [16mm, 17mm].

[0094] For reference Figure 6 It is shown that the pump blade structure is composed of a water pressure ring 14, a pump blade water inlet 13, a pump blade 17, a pump blade shaft 15, and a guide vane 16. Preferably, R5 = 17.74mm.

[0095] The pump blade structure of the present application optimizes the pump blade and adopts forward multi-wing blades to ensure the pressure in the cavity of the drainage pump, maintain a large flow rate, and improve the lift of the drainage pump. The drainage ring can reduce noise generation. The guide vane helps to guide the liquid and eliminates the water beating noise between the blades during the operation of the impeller. The forward blade type eliminates the water beating sound of gas and liquid, and the pump blade is arranged in a forward multi-wing form to greatly improve the performance of the water pump.

[0096] The present application also provides a pump body comprising the above-mentioned pump blade structure, and the pump body further comprises a base 6. A plurality of convex ribs 33 are arranged on the inner wall surface of the base 6 along the circumferential direction of the base 6, and the convex ribs 33 are in an arc shape. In this technical solution, a plurality of semicircular convex ribs 33 are arranged on the inner side surface of the motor base 6, and the inner bottom surface limiting rings 35 are composed of limiting rings a and limiting rings b with different radii Rw and Rr, as shown in Figure 12 By arranging the convex ribs 33, the contact area between the inner circumferential surface of the motor base 6 and the motor can be reduced, the strength of the base structure can be increased, the influence of the deformation error caused by the production process of the base on the coaxiality of the water pump center can be greatly reduced, and at the same time, the circumferential swing of the motor can be reduced, thereby reducing the influence on the performance of the water pump.

[0097] The centers of the semicircular convex ribs 33 with a radius of Rt are on the inner limiting circle with a radius of Rq, as shown inFigure 12 The first semicircular convex rib 33 has a starting position angle of β at the center of the circle, the second semicircular convex rib 33 has a center angle of γ relative to the first convex rib, and the ending position has a center angle of (π-μ). The height of the semicircular convex rib 33 is determined by H3, wherein Rq∈[25.5, 28], preferably Rq=27.9mm; Rr∈[16.5, 19], preferably Rr=18.8mm; Rw∈[10, 12], preferably Rw=11.4mm; β∈[18°, 20°], preferably β=19.19°; γ∈[28°, 31°], preferably γ=29.81°; (π-μ)∈[130°, 150°], preferably μ=40°; H3∈[15, 17.2], and the optimal execution height H3=17.2mm.

[0098] In some embodiments, a plurality of heat dissipation openings 34 are arranged on the base 6. The arc length of the heat dissipation opening 34 is L, and the arc length L of the heat dissipation opening 34 is determined by a circle with a radius Rq. The central angle of the arc length L of the heat dissipation opening 34 is θ, which satisfies L=πR q θ / 180, wherein θ∈[20°, 30°].

[0099] In this technical solution, combined with the description of the above-mentioned technical scheme, Figure 13 As shown in the figure, the heat dissipation opening 34 can accelerate the heat dissipation of the motor, thereby ensuring the influence of the motor overheating operation on the performance of the water pump and prolonging the service life of the motor.

[0100] The arc length track of the heat dissipation opening 34 is determined by a circle with a radius Rq, and the arc length L is determined by a central angle θ. The height H4 of the heat dissipation opening is ∈[19.9, 20.9], and the optimal execution height H4=20.4mm. The arc length L satisfies the relationship:

[0101] L=πR q θ / 180

[0102] In the formula, θ∈[20°, 30°], and preferably θ=26.9°.

[0103] The pump body of the application can effectively solve the heat dissipation problem and the motor circumferential swing problem in the operation of the motor. The base is designed to be not closed, which greatly improves the heat dissipation efficiency of the motor and reduces the influence of the water pump performance caused by the overheating of the motor.

[0104] Through the convex rib 33, the inner side of the motor base adopts a semi-cylindrical structure design, which can greatly improve the stability of the motor operation, and at the same time reduce the influence of the circumferential swing of the motor shaft on the performance of the drainage pump. The semi-enclosed motor heat dissipation base adopts an incomplete wrapping design of the motor, which can greatly improve the heat dissipation efficiency of the motor, reduce the influence of the overheat operation of the motor on the drainage performance of the drainage pump, reduce the contact area between the inner surface and the motor, and alleviate the deformation of the inner surface of the motor base due to the production process error, thereby maximizing the coaxiality of the motor; the motor can be circumferentially limited, which is easy to disassemble and assemble in the production process, improves the production efficiency, and greatly improves the stability of the motor operation, thereby reducing the influence of the circumferential swing of the motor shaft on the performance of the drainage pump.

[0105] In some embodiments, the pump body further comprises a volute 1, and the water inlet of the volute 1 is provided with a filter assembly 10. In this technical solution, a plurality of water inlets are arranged on the volute 1 along the circumference of the volute 1, and each water inlet is provided with a filter assembly 10. The filter assembly 10 comprises a filter piece 32, one end of the filter piece 32 is connected with the water inlet, the filter piece 32 is in the shape of a quadrangular prism, and the inner wall of the volute 1 is provided with a plurality of limiting holes 37. The filter piece 32 is modified from a cylinder. In addition to avoiding the direct contact between the drainage pump body and the water collecting container, which affects the drainage efficiency of the drainage pump, the filter piece 32 also has a certain filtering effect, which ensures the normal operation of the drainage pump during work. The adhesion of impurities to the surface of the quadrangular prism

[0106] The filter piece 32 is composed of an equilateral quadrangular prism with a length L m , and a circular arc with a radius Rf is tangent to the quadrangular edge. For reference, see Figure 16 , the acute angle of the quadrangular prism is determined by α, and the obtuse angle is determined by δ; the height of the filter piece 32 is determined by Dh.

[0107] Wherein L m ∈[1.5, 2], preferably L m =1.92mm; D h ∈[5, 7], preferably D h =6mm; α∈[71°, 77°], preferably α=74°; δ∈[103°, 109°], preferably δ=106°.

[0108] Through the filter assembly 10, a quadrangular structure design is adopted, which can effectively reduce the adhesion of impurities to the surface of the filter ring, avoid the blockage of the water inlet, and reduce the entry of impurities into the working cavity, thereby ensuring the normal operation of the drainage pump; greatly improve the filtering efficiency of impurities, thereby greatly improve the drainage performance of the drainage pump;

[0109] The pump body of the present application can effectively increase the working area of the blade, ensure the water pressure in the pump cavity, and achieve the effect of high lift of the water pump; the open ring design of the motor base greatly improves the heat dissipation efficiency of the motor, reduces the influence of the heat generated by the long-time working of the motor on the performance of the water pump, and the design of the semicircular track can greatly improve the working stability of the motor and reduce the influence of the circumferential swing of the motor shaft on the performance of the water pump, thereby effectively improving the lift and flow of the water pump.

[0110] The pump body of the present application is compared with the existing drainage pump:

[0111] Table 1

[0112]

[0113] From the experimental data in Table 1, it can be seen that the pump body of the present application has a 42.3% improvement in flow and an 18.6% improvement in lift under the same test conditions compared with the existing drainage pump. The experimental data shows that the pump body of the present application has a significant advantage in performance, which can effectively solve the problem of height limitation of the lift and flow of the drainage pump and greatly improve the working efficiency of the drainage pump.

[0114] For reference Figure 2 As shown in the figure, the pump body group of the present application includes a volute 1, a forward multi-wing impeller 2, a motor heat dissipation support 3, a direct current motor 4, a damping foot pad 5, a motor base 6, a water blocking ring 7, a sealing ring 8, a reversing elbow 9, and a filtering device 10. The direct current motor is located between the motor base 6 and the motor heat dissipation support 3 and is fixed and sealed by fixing screws. The motor shaft passes through the shaft hole of the heat dissipation support 3 and is connected with the pump blade shaft 15, and the volute 1 is connected and fixed with the clamping piece of the motor heat dissipation support 3 through the volute buckle 29. During the operation of the water pump, the water flow is first pumped into the water pump by the water pumping part 11 of the pump blade, and then flows into the water pump through the pump blade inlet 13. Under the joint action of the blade 17 and the guide vane 16, the fluid gradually flows between the volute and the pump blade. With the gradual increase of the water storage part pressure, the water flow enters the volute outlet 31 through the volute under the action of pressure and centrifugal force, and then is pumped into the drainage pipeline. The design of the pump blade, the motor base and the filtering device has a great influence on the performance of the water pump.

[0115] The present application also provides an air conditioner comprising the above pump body.

[0116] Those skilled in the art will readily understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0117] The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pump impeller structure, characterized in that: include: Multiple blades (17) and a rotating shaft (15) are provided. The blades (17) are disposed on the rotating shaft (15) and are spaced apart along the circumference of the rotating shaft (15). Each blade (17) includes a trailing edge (22), a suction surface (19), and a pressure surface (20). The suction surface (19), the trailing edge (22), and the pressure surface (20) are connected in sequence. The suction surface (19) has a linear shape. The pressure surface (20) has a linear shape. The linear The linear The trailing edge (22) has a chord (12) that forms a smooth transition arc, and the chord (12) is consistent with the line shape. Intersecting perpendicularly, the chord (12) and the line type Intersecting perpendicularly; The pump impeller structure includes a pressure ring (14), and the blades (17) are located inside the pressure ring (14). The cross-section of the pressure ring (14) is used as the projection plane, and the center of the pressure ring (14) is taken as point O (0, 0). The linear shape... satisfy, , in, ， x is the perpendicular distance between point x on the X-axis and the center O of the circle, and f(x) represents the vertical height of the Y-axis on the plane.

2. The pump impeller structure according to claim 1, characterized in that: The sine value of the chord (12) is L1, and the cosine value of the chord (12) is L2, which satisfies L1∈[0.3mm, 0.4mm], L2∈[0.15mm, 0.2mm].

3. The pump impeller structure according to claim 1, characterized in that: The pump impeller structure includes a pressure ring (14), and the blades (17) are located inside the pressure ring (14). The cross-section of the pressure ring (14) is used as the projection plane, and the center of the pressure ring (14) is taken as point O (0, 0). The linear shape... satisfy, , in, ， x is the vertical distance between point x on the X-axis and the center O of the circle, and g(x) represents the vertical height of the Y-axis on the plane.

4. The pump impeller structure according to claim 1, characterized in that: The pump impeller structure includes a pressure ring (14), and the blade (17) is located inside the pressure ring (14). The blade (17) includes a top (18). The suction surface (19), the top (18), and the pressure surface (20) are connected in sequence. The top (18) is connected to the trailing edge (22). The top (18) has a first line shape (28). Taking the longitudinal section of the pressure ring (14) as the projection plane, when the pump impeller structure is installed on the impeller (2), the center point of the impeller (2) is the center O4. The origin of the projection plane is defined as O4. The coordinate point Q3 is the starting coordinate point of the first line shape (28). The coordinate of Q3 is defined as ( ), The minimum distance between the trailing edge (22) and the central axis of the rotating shaft (15) is... The height of the trailing edge (22) satisfies, , in, x is the vertical distance between point x on the X-axis and the center O4 of the circle, and H(x) represents the vertical height of the Y-axis from the center O4 of the circle.

5. The pump impeller structure according to claim 1, characterized in that: The pump blade structure includes a pressure ring (14), and the blade (17) is located inside the pressure ring (14). The radius R5 of the pressure ring (14) is [16mm, 17mm].

6. A pump body, characterized in that, The pump body includes the pump blade structure according to any one of claims 1 to 5, and the pump body further includes a motor base (6). Along the circumference of the motor base (6), a plurality of ribs (33) are provided on the inner wall surface of the motor base (6), and the ribs (33) are arc-shaped.

7. The pump body according to claim 6, characterized in that: The motor base (6) is provided with multiple heat dissipation vents (34). The arc length of each heat dissipation vent (34) is L. The trajectory of the arc length L of the heat dissipation vent (34) is determined by a circle with radius Rq. The central angle of the arc length L of the heat dissipation vent (34) is... Its satisfaction ,in, .

8. The pump body according to claim 6, characterized in that: The pump body also includes a volute (1), and the inlet of the volute (1) is provided with a filter assembly (10).

9. An air conditioner, characterized in that, The pump body includes any one of claims 6 to 8.

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