CN102954536B - air conditioner - Google Patents

Abstract

The invention relates to an air conditioner, comprising an evaporator, a cross-flow fan blade, a front volute tongue, a rear volute tongue and an air duct, the air duct is located between the cross-flow fan blade and the evaporator, and the air duct includes the first arc segment of the air duct and In the second arc segment of the air duct, the trajectory of the center O ₁ of the first arc segment of the air duct is a circle with the center O ₀ of the cross-flow fan blade as the center radius R ₁ , and the arc length of the first arc segment of the air duct is 115mm～129mm, the track of the center O ₂ of the second arc section of the air duct is a circle with the center O ₀ of the cross-flow fan blade as the center radius R ₂ , and the arc length of the second arc section of the air duct is 60mm～70mm, The straight line O _{0 O 1} between the center O 1 of the first arc segment of the _air duct and the center O ₀ of the cross-flow fan blade, the straight line O ₀ O ₁ between the center O ₂ of the second arc segment of the air duct and the circle center O ₀ of the cross-flow fan blade The included angle between ₂ is 60°～65°, and there is a common tangent at the end point of the first arc segment of the air duct and the starting point of the second arc segment of the air duct.

Description

air conditioner

technical field

The invention relates to an air conditioner.

Background technique

An air conditioner is a device that can keep the indoor air in the most comfortable state according to different purposes. In summer, when the indoor temperature is high, it can discharge low-temperature cold air to the room to lower the indoor temperature. The hot air with a higher temperature can be discharged into the room to increase the room temperature. The working principle of the air conditioner is to exchange heat between the refrigerant circulating through the compressor, condenser, expansion device, and heat exchanger, and the air passing through the heat exchanger, and then adjust the cooling and heating of the air in the indoor space.

The structure of the air conditioner includes an outdoor unit composed of a compressor, a condenser, and an expansion device, and an indoor unit composed of a fan and a heat exchanger. The outdoor unit and the indoor unit are connected to each other through refrigerant piping.

The types of air conditioners can be divided into integrated type and split type according to the overall structure. The integrated air conditioner is composed of a chassis as a whole, and the split air conditioner is composed of an indoor unit installed in a space requiring air conditioning and an outdoor unit installed in an outdoor space, and the indoor unit and the outdoor unit are independent of each other. In recent years, with the improvement of people's quality of life, split-type air conditioners have been widely used in order to avoid the impact of noise when the air conditioner is working. In addition, according to the location of the indoor unit, air conditioners can be divided into cabinet air conditioners that are placed upright indoors, wall-mounted air conditioners that are hung on the indoor wall, and ceiling air conditioners that are installed on the top of the room.

The structure of the indoor unit of the cabinet air conditioner generally includes a shell, a front panel is connected to the front of the shell, a rear cover is connected to the back of the shell, a fan, a volute and a heat exchanger are installed inside the shell, and the volute It is installed at the lower part of the housing, the fan is installed inside the volute, and the heat exchanger is installed at the outlet of the volute. A water collecting pan is arranged between the volute and the heat exchanger. After the air conditioner is turned on, the fan rotates to blow the wind into the room through the volute and the heat exchanger to adjust the indoor air temperature.

With the improvement of people's living standards and national energy efficiency standards, the air volume and noise performance of air conditioners have attracted more and more attention. The air duct of the traditional air conditioner is generally a horizontal centrifugal air duct, the air duct shape is relatively fixed, and there are relatively small air volume, relatively large noise, and the sound quality of the whole machine is average. Therefore, in order to better solve this problem, a new profile optimization of the air duct is required.

Contents of the invention

The object of the present invention is to provide an air conditioner capable of reducing noise, improving sound quality, and having a large air volume.

An air conditioner, comprising an evaporator, a cross-flow fan blade, a front volute tongue, a rear volute tongue, and an air duct, the air duct is located between the cross-flow fan blade and the evaporator, and it is characterized in that the air duct includes a wind The first arc segment of the air duct and the second arc segment of the air duct, the track of the center _O1 of the first arc segment of the air duct is a circle with the center _O0 of the cross-flow fan blade as the center radius _R1 , The arc length of the first arc segment of the air duct is 115 mm to 129 mm, and the track of the center _O2 of the second arc segment of the air duct is the circle center _O0 of the cross-flow fan blade as the center radius _R2 . circle, the arc length of the second arc segment of the air duct is 60 mm to 70 mm, the center O ₁ of the first arc segment of the air duct and the straight line O ₀ O ₁ where the center O ₀ of the cross-flow fan blade is located, the The angle between the center O ₂ of the second arc segment of the air duct and the straight line O ₀ O ₂ where the center O ₀ of the cross-flow fan blade is located is 60°-65°, and the second arc segment of the air duct is The end point of the first arc segment of the air duct is the starting point, and there is a common tangent between the end point of the first arc segment of the air duct and the starting point of the second arc segment of the air duct.

Further, the arc length of the first arc segment of the air duct is 119 mm to 121 mm; the arc length of the second arc segment of the air duct is 63 mm to 65 mm.

Further, the arc length of the first arc segment of the air duct is 120.15 mm; the arc length of the second arc segment of the air duct is 64.46 mm.

Further, the center O ₁ of the first arc segment of the air duct and the straight line O ₀ O ₁ where the center O ₀ of the cross-flow vane is located, the center O ₂ of the second arc segment of the air duct and the The included angle between the straight lines O ₀ O ₂ where the center O ₀ of the air flow blade is located is 62°˜64°.

Further, the center O ₁ of the first arc segment of the air duct and the straight line O ₀ O ₁ where the center O ₀ of the cross-flow vane is located, the center O ₂ of the second arc segment of the air duct and the The included angle between the straight lines O ₀ O ₂ where the center O ₀ of the air flow vane is located is 63°.

Further, the radius of the cross-flow vane is R ₀ , the range of R ₁ /R ₀ is 0.25-0.55, and the range of R ₂ /R ₀ is 2.25-4.45.

Further, the radius of the cross-flow vane is R ₀ , the value of R ₁ /R ₀ is 0.45, and the value of R ₂ /R ₀ is 3.35.

Further, the radius R ₃ of the first arc segment of the air duct ranges from 77.5 mm to 87.5 mm, and the radius R ₄ of the second arc segment of the air duct ranges from 78.5 mm to 188.6 mm.

Further, the radius R ₃ of the first arc segment of the air duct ranges from 85 mm to 87 mm, and the radius R ₄ of the second arc segment of the air duct ranges from 185 mm to 188 mm.

Further, the radius R ₃ of the first arc segment of the air duct is 86.67 mm, and the radius R ₄ of the second arc segment of the air duct is 187.65 mm.

Further, the minimum gap between the front volute tongue and the outer edge of the cross-flow vane is 6.5mm-7.5mm, and the minimum gap between the front volute tongue and the second arc section of the air duct is 110mm-112mm.

Further, the minimum gap between the front volute tongue and the outer edge of the cross-flow blade is 7.12 mm, and the minimum gap between the front volute tongue and the second arc segment of the air duct is 111 mm.

Further, the shape line of the anterior cochlear tongue includes the first arc segment of the anterior cochlear tongue, the first straight line segment of the anterior cochlear tongue, the second arc segment of the anterior cochlear tongue, the second straight line segment of the anterior cochlear tongue, the anterior cochlear tongue In the third arc segment, the angle between the first straight line segment of the anterior cochlear tongue and the second straight line segment of the anterior cochlear tongue ranges from 40° to 50°.

Further, the radius of the first arc segment of the anterior cochlear tongue is 6.78 mm, the radius of the second arc segment of the anterior cochlear tongue is 3.05 mm, and the radius of the third arc segment of the anterior cochlear tongue is 0.21 mm.

Further, the angle between the first straight section of the anterior cochlear lingual and the second straight section of the anterior cochlear lingual is 46°.

Further, the minimum gap between the rear volute tongue and the edge of the cross-flow vane is 5-6mm.

Further, the minimum gap between the rear volute tongue and the outer edge of the cross-flow blade is 5.43 mm.

Further, the end angle of the posterior cochlear tongue is 2°-6°.

Further, the end angle of the posterior cochlear tongue is 3°.

Further, the air conditioner further includes a casing, an air inlet is arranged on the front side of the casing, the air inlet is arranged opposite to the evaporator, and an air outlet is arranged on the rear side of the casing.

Further, the front volute tongue is arranged at the air outlet, and the front volute tongue is engaged with the housing.

Further, the air duct and the cross-flow blades are arranged vertically relative to the base.

Further, the air duct also includes a third straight line segment of the air duct, the third straight line segment of the air duct is tangent to the second arc segment of the air duct, the starting point of the third straight line segment of the air duct, the air duct The end point of the second arc segment, the third straight line segment of the air duct coincides with the tangent point of the second arc segment of the air duct, and the length of the third straight line segment of the air duct is 20 mm to 25 mm.

The invention also provides another air conditioner capable of reducing noise, improving sound quality and having a large air volume.

An air conditioner includes a shell, a base, an end cover, an evaporator, cross-flow fan blades, a front volute tongue, a rear volute tongue and an air duct. The air duct is located between the cross-flow blades and the evaporator, and is characterized in that the air duct includes the first arc segment of the air duct, the first straight line segment of the air duct, and the second straight line segment of the air duct, and the center of the first arc segment of the air duct The trajectory of O ₁ is a circle with the center O ₀ of the cross-flow fan blade as the center and the radius R ₁ , with a length of 115 mm to 129 mm; the starting point of the first straight line segment of the air duct is tangent to the end point of the first arc segment of the air duct, The length of the first straight line segment of the air duct is 10 mm to 15 mm, the second straight line segment of the air duct is connected to the first straight line segment of the air duct, and the formed angle is 170° to 180°, the air duct The length of the second straight line segment is 60 mm to 65 mm.

Further, the arc length of the first arc segment of the air duct is 119mm-129mm.

Further, the arc length of the first arc segment of the air duct is 126.7 mm.

Further, the length of the first straight section of the air duct is 13.22mm, and the length of the second straight section of the air duct is 61.4mm.

Further, the angle between the second straight line section of the air duct and the first straight line section of the air duct is 174°.

Further, the radius R ₃ of the first arc segment of the air duct ranges from 77.5 mm to 87.5 mm.

Further, the radius R ₃ of the first arc segment of the air duct is 78.5mm.

Further, the shape line of the anterior cochlear tongue includes the first arc segment of the anterior cochlear tongue, the first straight line segment of the anterior cochlear tongue, the second arc segment of the anterior cochlear tongue, the second straight line segment of the anterior cochlear tongue, the anterior cochlear tongue The third arc segment, the angle between the first straight segment of the anterior cochlear tongue and the second straight segment of the anterior cochlear tongue is 25° to 35°, the first arc segment of the anterior cochlear tongue is parallel to the first straight segment of the anterior cochlear tongue Tangent, the second straight segment of the anterior cochlear tongue is tangent to the second arc segment of the anterior cochlear tongue and the third arc segment of the anterior cochlear tongue.

Further, the radius of the first arc segment of the anterior cochlear tongue is 5.57 mm, the radius of the second arc segment of the anterior cochlear tongue is 2.93 mm, and the radius of the third arc segment of the anterior cochlear tongue is 0.20 mm.

Further, the minimum gap between the front volute tongue and the through-flow fan blade is 2.50-3.50 mm.

Further, the minimum gap between the front volute tongue and the outer edge of the cross-flow blade is 3 mm.

Further, the minimum gap between the front volute tongue and the second straight section of the air duct is 50.50-60.50mm.

Further, the minimum gap between the front volute tongue and the second straight section of the air duct is 55.42mm.

Further, the minimum gap between the rear volute tongue and the outer edge of the cross-flow blade is 6.5-7.5 mm.

Further, the minimum gap between the rear volute tongue and the outer edge of the cross-flow blade is 6.32mm.

Further, the end angle of the posterior cochlear tongue is 4°-8°.

Further, the end angle of the posterior cochlear tongue is 6°.

Further, the air conditioner further includes a casing, an air inlet is arranged on the front side of the casing, the air inlet is arranged opposite to the evaporator, and an air outlet is arranged on the rear side of the casing.

Further, an air inlet is provided on the front side of the casing, and the air inlet is arranged opposite to the evaporator, and an air outlet is arranged on the rear side of the casing.

Further, the cross-flow fan blades are installed on the base and the end cover, and the area of the base is larger than that of the end cover.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention will improve the parameters of the air duct profile, improve the distance between the volute tongue and the cross-flow fan blade, and increase the diameter of the cross-flow fan blade. The above improvements will reduce the noise of the air conditioner, improve the sound quality, and increase the air volume. big.

Description of drawings

Fig. 1 is the perspective view of the air conditioner of the specific embodiment of the technical solution;

Fig. 2 is a partial perspective view of an air-conditioning device according to a specific embodiment of the technical solution;

Fig. 3 is a cross-sectional view of an air-conditioning device according to a specific embodiment of the technical solution;

Fig. 4 is a schematic diagram of the air duct profile of the first specific embodiment of the technical solution;

Fig. 5 is a schematic diagram of the air duct profile of the second and third specific embodiments of the technical solution;

Fig. 6 is a graph showing the relationship between air volume and noise measured within the arc length and radius of the air duct in the first specific embodiment of the technical solution;

Fig. 7 is a diagram of the relationship between air volume and noise measured in the air duct of the first specific embodiment of the technical solution within the range of the gap between the front volute tongue and the cross-flow fan blade;

Fig. 8 is a graph showing the relationship between air volume and noise measured within the range of the gap between the rear volute tongue and the cross-flow blade of the air duct of the first specific embodiment of the technical solution;

Fig. 9 is a diagram showing the relationship between air volume and noise measured within the arc length and radius range of the air duct in the second specific embodiment of the technical solution;

Fig. 10 is a diagram of the relationship between air volume and noise measured in the range of O ₀ O ₁ and O ₀ O ₂ in the air duct of the second specific embodiment of the technical solution;

Fig. 11 is a diagram of the relationship between air volume and noise measured in the air duct of the second specific embodiment of the technical solution within the range of the gap between the front volute tongue and the cross-flow fan blade;

Fig. 12 is a diagram of the relationship between air volume and noise measured in the air duct of the second specific embodiment of the technical solution within the gap range between the rear volute tongue and the cross-flow fan blade;

Fig. 13 is a schematic diagram of the anterior cochlear tongue 7 of the present technical solution.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

The technical solution will be further described below in conjunction with multiple drawings and embodiments.

Please refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 13 together. The present invention provides the first embodiment. Leaf 6, front snail tongue 7, back snail tongue 8 and air duct 9. The air duct 9 is located between the cross-flow blades 6 and the evaporator 5. The air duct 9 includes the first arc segment 11 of the air duct, the first straight line segment 9a of the air duct and the second straight line segment 9b of the air duct. The first arc line of the air duct The track of the center O1 of the section ₁₁ is a circle with the center _O0 of the through-flow fan blade as the center and the radius _R1 , the length is 115-129 mm, and the arc length of the first arc segment of the air duct is 119-129 mm. In this embodiment, the preferred value is 126.7 mm; the radius R ₃ of the first arc segment of the air duct ranges from 77.5 mm to 87.5 mm, and the preferred value in this embodiment is 78.5 mm.

The first straight line section 9a of the air duct is tangent to the first arc section 11 of the air duct, and its length is 10-15mm, preferably 13.22mm in this embodiment; the second straight line section 9b of the air duct is tangent to the first arc section of the air duct 11 are connected, and the formed angle is 170°-180°, preferably 174° in this embodiment, the length of the second straight line section of the air duct is 60-65mm, and the preferred data in this embodiment is 61.4mm.

An air inlet 12 is arranged on the front side of the casing 2 , and the air inlet 12 is arranged opposite to the evaporator 5 , and an air outlet 13 is arranged on the rear side of the casing 2 .

The front volute tongue 7 is arranged at the air outlet 13 , and the front volute tongue 7 is engaged with the housing 2 . The minimum gap between the front volute tongue 7 and the outer edge of the cross-flow blade 6 is 2.50-3.50mm, and the preferred data in this embodiment is 3.00mm; The preferred data of the embodiment is 55.42mm; the shape line of the anterior cochlear tongue 7 includes the first arc segment 7a of the anterior cochlear tongue, the first straight line segment 7b of the anterior cochlear tongue, the second arc segment 7c of the anterior cochlear tongue, the first arc segment of the anterior cochlear tongue Two straight line segments 7d, the third arc segment 7e of the anterior cochlear tongue, the angle between the first straight line segment 7b of the anterior cochlear tongue and the second straight line segment 7d of the anterior cochlear tongue is 25°～35°, preferably, the anterior cochlear tongue The angle between the first straight line segment 7b and the second straight line segment 7d of the anterior cochlear tongue is 30°, the first arc segment of the anterior cochlear tongue is tangent to the first straight line segment of the anterior cochlear tongue, and the second straight line segment of the anterior cochlear tongue is tangent to the first straight line segment of the anterior cochlear tongue The second arc of the anterior cochlear tongue is tangent to the third arc of the anterior cochlear tongue. The radius of the first arc of the anterior cochlear tongue is 5.57mm, the radius of the second arc of the anterior cochlear tongue is 2.93mm, and the radius of the third arc of the anterior cochlear tongue is 0.20mm. The minimum gap H1 between the front volute tongue 7 and the through-flow vane 6 is 5.50-6.50 mm, and the preferred data in this embodiment is 5.98 mm.

The minimum gap H2 between the rear volute tongue 8 and the outer edge of the cross-flow vane 6 is 6.5-7.5 mm, and the preferred data in this embodiment is 6.32 mm. The end angle α of the posterior cochlear tongue 7 is 4°-8°, and it is preferably 6° in this embodiment.

The cross-flow vane 6 is installed on the base 3 and the end cover 4 . The area of the base 3 is larger than that of the end cap 4 .

If the pickup is used to test the noise radiation of the existing air-conditioning indoor unit and the regulating indoor unit using the rear shell of the air-conditioning indoor unit in the embodiment of the present invention, the pickup is placed 1m in front of the air-conditioning indoor unit, and the height of the pickup is 1m from the ground ; and supply mains power to the indoor unit of the air conditioner, and the indoor unit of the air conditioner is in the mode of silent windshield, low windshield, medium windshield, high windshield and super windshield respectively, the default air guide angle, rated cooling working condition, the air conditioner is cooling Tested under the model conditions, the experimental data obtained are as follows:

(1) Table 1 is the total noise value, air volume and rotating speed data that the first embodiment of the present invention records under optimal data conditions; Table 2 is the total noise value, air volume and speed data that existing air conditioner records under the above-mentioned conditions speed data. Through the comparison of experimental data, it can be known that in the cooling mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 1

Table 2

If the pickup is used to test the noise radiation of the existing air-conditioning indoor unit and the regulating indoor unit using the rear shell of the air-conditioning indoor unit in the embodiment of the present invention, the pickup is placed 1m in front of the air-conditioning indoor unit, and the height of the pickup is 1m from the ground ; and supply mains power to the indoor unit of the air conditioner, and the indoor unit of the air conditioner is in the modes of silent windshield, low windshield, medium windshield, high windshield and super strong windshield respectively. The test is carried out under heating mode conditions, and the experimental data obtained are as follows:

(2) Table 3 is the total noise value, air volume and rotating speed data that first embodiment of the present invention records under optimal data conditions; Table 4 is the total noise value, air volume and speed data that existing air conditioner records under above-mentioned conditions speed data. Through the comparison of experimental data, it can be seen that in the heating mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

table 3

Table 4

Similarly, Fig. 6 is a graph showing the relationship between air volume and noise measured within the range of arc length and radius of the air duct of a specific embodiment of the technical solution; Under the condition of 77.5-87.5mm, the noise radiation of the existing air-conditioning indoor unit and the regulating indoor unit using the rear shell of the air-conditioning indoor unit in the embodiment of the present invention is tested by using the pickup, and the pickup is placed 1m in front of the air-conditioning indoor unit and the height of the pickup is 1m from the ground; and supply mains power to the air conditioner indoor unit, and the air conditioner indoor unit is in the modes of silent windshield, low windshield, medium windshield, high windshield and super windshield respectively. The default wind guide angle is Rated cooling conditions, the air conditioner is tested under the heating mode, and the schematic diagram of the relationship between noise and air volume is obtained. It can be seen from the figure that the arc length of the first arc segment is 115-129mm, and the radius is 77.5- Under the condition of 87.5mm, the air volume increases and the noise decreases accordingly.

(3) The arc length of the first arc section of the air duct is 115mm, the radius is 77.5, the length of the first straight line section of the air duct is 10mm, and the length of the second straight line section of the air duct is 60mm. The included angle of the second straight line section of the road is 170°, the minimum gap between the front volute tongue 7 and the outer edge of the cross-flow fan 6 is 2.50mm, the minimum gap H2 between the rear volute tongue 8 and the outer edge of the cross-flow fan 6 is 6.5mm, and the rear Under the condition that the end angle of the volute tongue is 4°, the following data are measured: Table 5 is the total noise value, air volume and rotational speed data measured under the above-mentioned conditions in the embodiment of the present invention; The total noise value, air volume and speed data measured under the conditions. Through the comparison of experimental data, it can be known that in the cooling mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

table 5

Table 6

(4) The arc length of the first arc section of the air duct is 129mm, the radius is 87.5, the length of the first straight line section of the air duct is 15mm, and the length of the second straight line section of the air duct is 65mm. The included angle of the second straight section of the road is 180°, the minimum gap between the front volute tongue 7 and the outer edge of the cross-flow blade 6 is 3.50mm, the minimum gap H2 between the rear volute tongue 8 and the outer edge of the cross-flow blade 6 is 7.5mm, and the rear Under the condition that the end angle of the volute tongue is 8°, the following data are measured: Table 7 is the total noise value, air volume and rotational speed data measured under the above-mentioned conditions in the embodiment of the present invention; The total noise value, air volume and speed data measured under the conditions. Through the comparison of experimental data, it can be known that in the cooling mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 7

Table 8

(5) The arc length of the first arc section of the air duct is 119mm, the radius is 77.5, the length of the first straight line section of the air duct is 10mm, and the length of the second straight line section of the air duct is 60mm. The included angle of the second straight line section of the road is 170°, the minimum gap between the front volute tongue 7 and the outer edge of the cross-flow fan 6 is 2.50mm, the minimum gap H2 between the rear volute tongue 8 and the outer edge of the cross-flow fan 6 is 6.5mm, and the rear Under the condition that the end angle of the volute tongue is 4°, the following data are measured: Table 9 is the total noise value, air volume and rotational speed data measured under the above-mentioned conditions in the embodiment of the present invention; The total noise value, air volume and speed data measured under the conditions. Through the comparison of experimental data, it can be known that in the cooling mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 9

Table 10

(6) The arc length of the first arc section of the air duct is 129mm, the radius is 77.5, the length of the first straight line section of the air duct is 10mm, and the length of the second straight line section of the air duct is 60mm. The included angle of the second straight section of the road is 180°, the minimum gap between the front volute tongue 7 and the outer edge of the cross-flow blade 6 is 3.50mm, the minimum gap H2 between the rear volute tongue 8 and the outer edge of the cross-flow blade 6 is 7.5mm, and the rear Under the condition that the end angle of the volute tongue is 8°, the following data are measured: Table 11 is the total noise value, air volume and rotational speed data measured under the above-mentioned conditions in the embodiment of the present invention; The total noise value, air volume and speed data measured under the conditions. Through the comparison of experimental data, it can be known that in the cooling mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 11

Table 12

Fig. 7 is a diagram of the relationship between air volume and noise measured in the air duct of the first specific embodiment of the technical solution within the range of the gap between the front volute tongue and the cross-flow fan blade; the test method is the same as that in Fig. 6, and will not be described here. It can be seen from the figure that under the condition that the gap between the front volute tongue and the cross-flow fan blade is 5.5-6.5, the noise is reduced correspondingly with the increase of the air volume. Fig. 8 is a diagram of the relationship between air volume and noise measured in the air duct of a specific embodiment of the technical solution within the range of the gap between the rear volute tongue and the cross-flow fan blade; the test method is the same as that in Fig. 6 and will not be described here. It can be seen that under the condition that the gap between the front volute tongue and the cross-flow fan blade is 6.5-7.5, the noise decreases correspondingly while the air volume increases.

The present invention also provides a second embodiment, please refer to Figure 1, Figure 2, Figure 3, Figure 5 and Figure 13 together, the air conditioner 1 includes a housing 2, a base 3, an end cover 4, an evaporator 5, Flow wind blade 6, front snail tongue 7, back snail tongue 8 and air duct 9. The air duct 9 is located between the cross-flow fan blade 6 and the evaporator 5, the air duct 9 includes the first arc segment of the air duct and the second arc segment of the air duct, and the track of the center _O1 of the first arc segment of the air duct is given by The center _O of the cross-flow fan blade is a circle with a radius of _R1 , the arc length of the first arc segment of the air duct is 115-129 mm, and the arc length of the first arc segment of the air duct can also be 119 mm. ~ 121mm, preferably 120.15mm in this embodiment; the radius _R3 of the first arc segment of the air duct ranges from 77.5 to 87.5mm, and the preferred value in this embodiment is 86.67mm; the center O of the second arc segment of the air duct The trajectory of ₂ is a circle with the center _O0 of the cross-flow fan blade as the center radius _R2 , the arc length of the second arc segment of the air duct is 60-70mm, and the arc length of the second arc segment of the air duct The arc length can also be 63-65 mm, and the preferred data in this embodiment is 64.46 mm.

The trajectory of the center O ₂ is a circle with the center O ₀ of the cross-flow fan blade as the center radius R ₂ , and the length is 60-70 mm, preferably 64.46 mm in this embodiment.

Among them, the radius of the cross-flow fan blade is set as R ₀ , the range of R ₁ /R ₀ is 0.25-0.55, the range of R ₂ /R ₀ is 2.25-4.45, the center O ₁ of the first arc segment of the air duct and the cross-flow fan blade The angle between the straight line O ₀ O ₁ where the center _O 0 is located, the center O ₂ of the second arc segment of the air duct, and the straight line O ₀ O ₂ where the center O ₀ of the cross-flow fan blade is 60°-65°, the wind The center O ₁ of the first arc segment of the duct and the center O ₀ of the cross-flow fan blade are located on a straight line O ₀ O ₁ , the circle center O ₂ of the second arc segment of the air duct and the circle center O ₀ of the cross-flow fan blade The included angle between the straight lines O ₀ O ₂ may also be 62°-64°. The preferred data in this embodiment is 63°. The second arc segment of the air duct takes the end point of the first arc segment of the air duct as the starting point, and there is an public tangent. Wherein, the radius _R3 of the first arc section of the air duct ranges from 77.5mm to 87.5mm, and the radius _R3 of the first arc section of the air duct may also range from 85mm to 87mm, with a preferred value of 86.67mm; The radius R4 of the second arc segment ranges from 78.5 mm to 188.6 mm, and the radius R4 of the second arc segment of the air duct may also range from 185 mm to 188 mm, and the preferred value in this embodiment is 187.65 mm.

An air inlet 12 is arranged on the front side of the casing 2 , and the air inlet 12 is arranged opposite to the evaporator 5 , and an air outlet 13 is arranged on the rear side of the casing 2 .

The front volute tongue 7 is arranged at the air outlet 13 , and the front volute tongue 7 is engaged with the housing 2 . The minimum gap H1 between the front snail tongue 7 and the outer edge of the cross-flow fan blade 6 is 6.5-7.5, the preferred data in this embodiment is 7.12 mm, and the minimum gap H1 between the front snail tongue 7 and the second arc segment of the air duct is 110-112 mm. The preferred data of the embodiment is 111mm. The profile of the anterior cochlear tongue 7 includes the first arc segment of the anterior cochlear tongue, the first straight line segment of the anterior cochlear tongue, the second arc segment of the anterior cochlear tongue, the second straight line segment of the anterior cochlear tongue, The angle between the third arc segment of the anterior cochlear tongue, the first straight line segment of the anterior cochlear tongue and the second straight line segment of the anterior cochlear tongue is 40°-50°, and the preferred data in this embodiment is 46°. The radius of the first arc of the anterior cochlear tongue is 6.78mm, the radius of the second arc of the anterior cochlear tongue is 3.05mm, and the radius of the third arc of the anterior cochlear tongue is 0.21mm.

The minimum clearance H2 between the rear volute tongue 8 and the outer edge of the cross-flow vane 6 is 5-6 mm, and the preferred data in this embodiment is 5.43 mm. The end angle α of the posterior cochlear tongue 7 is 2°-6°. The preferred data in this embodiment is 3°.

The cross-flow vane 6 is installed on the base 3 and the end cover 4 . The area of the base 3 is larger than that of the end cap 4 .

If the pickup is used to test the noise radiation of the existing air-conditioning indoor unit and the regulating indoor unit using the rear shell of the air-conditioning indoor unit in the embodiment of the present invention, the pickup is placed 1m in front of the air-conditioning indoor unit, and the height of the pickup is 1m from the ground ; and supply mains power to the indoor unit of the air conditioner, and the indoor unit of the air conditioner is in the mode of silent windshield, low windshield, medium windshield, high windshield and super windshield respectively, the default air guide angle, rated cooling working condition, the air conditioner is cooling Tested under the model conditions, the experimental data obtained are as follows:

(7) Table 13 is the total noise value, air volume and rotating speed data that the second embodiment of the present invention records under optimal data conditions; speed data. Through the comparison of experimental data, it can be known that in the cooling mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 13

Table 14

If the pickup is used to test the noise radiation of the existing air-conditioning indoor unit and the regulating indoor unit using the rear shell of the air-conditioning indoor unit in the embodiment of the present invention, the pickup is placed 1m in front of the air-conditioning indoor unit, and the height of the pickup is 1m from the ground ; and supply mains power to the indoor unit of the air conditioner, and the indoor unit of the air conditioner is in the modes of silent windshield, low windshield, medium windshield, high windshield and super strong windshield respectively. The test is carried out under heating mode conditions, and the experimental data obtained are as follows:

(8) Table 15 is the total noise value, air volume and rotating speed data that the second embodiment of the present invention records under optimal data conditions; speed data. Through the comparison of experimental data, it can be seen that in the heating mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 15

Table 16

(9) The arc length of the first arc section of the air duct is 115mm, the radius is 77.5mm, the arc length of the second arc section of the air duct is 60mm, and the radius is 78.5mm, the clip of O ₀ O ₂ and O ₀ O ₁ The angle is 60°, the minimum gap between the front volute tongue 7 and the outer edge of the cross-flow vane is 5.50 mm, the minimum gap between the rear volute tongue 8 and the outer edge of the cross-flow vane 6 is 6.5 mm, and the radius of the cross-flow vane is R ₀ , R ₁ /R ₀ is 0.25, R ₂ /R ₀ is 2.25, and the end angle of the rear cochlear tongue is 2°, the following data are measured: Table 17 shows the second embodiment of the present invention under the above conditions The measured total noise value, air volume and speed data; Table 18 shows the total noise value, air volume and speed data measured by the existing air conditioner under the above conditions. Through the comparison of experimental data, it can be seen that in the heating mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 17

Table 18

(9) The arc length of the first arc section of the air duct is 129mm, the radius is 87.5mm, the arc length of the second arc section of the air duct is 70mm, and the radius is 188.6mm, the clip of O ₀ O ₂ and O ₀ O ₁ The angle is 70°, the minimum gap between the front volute tongue and the outer edge of the cross-flow vane is 6.50 mm, the minimum gap between the rear volute tongue 8 and the outer edge of the cross-flow vane 6 is 7.5 mm, and the radius of the cross-flow vane is R ₀ , Under the condition that R ₁ /R ₀ is 0.55, R ₂ /R ₀ is 4.45, and the angle of the end of the rear cochlear tongue is 6°, the following data are measured: Table 19 is the second embodiment of the present invention measured under the above conditions The total noise value, air volume and rotational speed data obtained; Table 20 shows the total noise value, air volume and rotational speed data measured by the existing air conditioner under the above conditions. Through the comparison of experimental data, it can be seen that in the heating mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 19

Table 20

(10) The arc length of the first arc section of the air duct is 119mm, the radius is 85mm, the arc length of the second arc section of the air duct is 63mm, and the radius is 185mm, the angle between O ₀ O ₂ and O ₀ O ₁ is 62°, the minimum gap between the front volute tongue 7 and the outer edge of the cross-flow vane is 5.50 mm, the minimum gap between the rear volute tongue 8 and the outer edge of the cross-flow vane 6 is 6.5 mm, and the radius of the cross-flow vane is R ₀ , R ₁ /R ₀ is 0.25, R ₂ /R ₀ is 2.25, and the end angle of the rear cochlear tongue is 2°, the following data are measured: Table 21 is the second embodiment of the present invention measured under the above conditions The total noise value, air volume and speed data of the existing air conditioner; Table 22 shows the total noise value, air volume and speed data of the existing air conditioner measured under the above conditions. Through the comparison of experimental data, it can be seen that in the heating mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 21

Table 22

(11) The arc length of the first arc section of the air duct is 121mm, the radius is 87mm, the arc length of the second arc section of the air duct is 65mm, and the radius is 188mm, the angle between O ₀ O ₂ and O ₀ O ₁ is 64°, the minimum gap between the front volute tongue 7 and the outer edge of the cross-flow vane is 5.50 mm, the minimum gap between the rear volute tongue 8 and the outer edge of the cross-flow vane 6 is 6.5 mm, and the radius of the cross-flow vane is R ₀ , R ₁ /R ₀ is 0.55, R ₂ /R ₀ is 4.45, and the end angle of the rear cochlear tongue is 6°, the following data are measured: Table 23 is the second embodiment of the present invention measured under the above conditions The total noise value, air volume and rotational speed data; Table 24 shows the total noise value, air volume and rotational speed data measured by the existing air conditioner under the above conditions. Through the comparison of experimental data, it can be seen that in the heating mode, the speed of the present invention decreases, the noise value decreases, and the air volume increases.

Table 23

Table 24

Fig. 9 is the air volume and noise relationship diagram measured in the arc length and radius range of the air duct of the second specific embodiment of the technical solution; the test method is the same as that in Fig. 6, so it will not be repeated here, as can be seen from the figure , the arc length of the first arc section of the air duct is 115-129mm, the arc length of the second arc section of the air duct is 115-129mm, the radius of the first arc section of the air duct is 77.5-87.5mm, and the arc length of the air duct second arc section is 77.5-87.5mm. Under the conditions that the radius of the second arc section is 77-189mm, the arc length of the first arc section of the air duct is 115-129mm, and the arc length of the second arc section of the air duct is 60-70mm, the noise will increase while the air volume increases. also decreased accordingly. Fig. 10 is a diagram of the relationship between air volume and noise measured in the range of O ₀ O ₁ and O ₀ O ₂ in the air duct of the second specific embodiment of the technical solution; the test method is the same as that in Fig. 6 and will not be described here. It can be seen from the figure that when the angle between O ₀ O ₁ and O ₀ O ₂ is 60°-70°, the noise decreases while the air volume increases. Fig. 11 is a graph showing the relationship between air volume and noise measured within the range of the gap between the front volute tongue and the cross-flow blade of the air duct of another specific embodiment of the technical solution; the test method is the same as that in Fig. 6, and will not be described here. It can be seen from the figure that when the gap between the front volute tongue and the cross-flow fan blade is 5.5-6.5 mm, the noise decreases while the air volume increases. Fig. 12 is a diagram of the relationship between air volume and noise measured in the air duct of the second specific embodiment of the technical solution within the range of the gap between the rear volute tongue and the cross-flow fan blade; the test method is the same as that in Fig. 6, and will not be repeated here, and will be described later The gap between the volute tongue and the cross-flow fan blade is within the range of 6.5-7.5mm, and the noise is correspondingly reduced while the air volume is increased.

As a third embodiment, referring to Fig. 5, on the basis of the second embodiment, the air duct 9 further includes a third straight section 14 of the air duct, and the third straight section 14 of the air duct is connected to the third straight section 14 of the air duct. The second arc segment 10 of the air duct is tangent, the starting point of the third straight line segment 14 of the air duct, the end point of the second arc segment 10 of the air duct, and the third straight line segment 14 of the air duct and the second arc line of the air duct The tangent points of the sections 10 coincide, and the length of the third straight line section 14 of the air duct is 20-25 mm, preferably 24.4 mm in this embodiment. In the case of adding a straight line section, it does not affect the noise and air volume of the air duct , the increased straight line section only plays a role in making the air duct smoother. The above air ducts can be vertical air ducts or horizontal air ducts.

The air-conditioning device involved in this technical solution improves the parameters of the air duct profile, improves the distance between the volute tongue and the cross-flow fan blade, and increases the diameter of the cross-flow fan blade. The above improvements reduce the noise of the air-conditioning device and improve the sound quality , and the air volume also increases.

The above detailed description is a specific description of a feasible embodiment of the present invention. This embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or change that does not depart from the present invention should be included in the scope of this case. within the scope of the patent.

Claims (42)

1. an aircondition, comprise evaporimeter, through-flow fan blade, front snail tongue, rear snail tongue and air channel, described air channel, between described through-flow fan blade, evaporimeter, is characterized in that, described air channel comprises air channel first arc and air channel second arc, the center of circle O of described air channel first arc ₁track be center of circle O with described through-flow fan blade ₀for center of circle radius is R ₁circle, the arc length of described air channel first arc is 115mm ~ 129mm, the center of circle O of described air channel second arc ₂track be center of circle O with described through-flow fan blade ₀for center of circle radius is R ₂circle, the arc length of described air channel second arc is 60mm ~ 70mm, the center of circle O of described air channel first arc ₁with the center of circle O of described through-flow fan blade ₀place straight line O ₀o ₁, described air channel second arc center of circle O ₂with the center of circle O of described through-flow fan blade ₀place straight line O ₀o ₂between angle be 60 ° ~ 65 °, described air channel second arc for starting point, has common tangent at the terminal of described air channel first arc and arc starting point place, described air channel second with the terminal of described air channel first arc.

2. aircondition as claimed in claim 1, it is characterized in that, the arc length of described air channel first arc is 119mm ~ 121mm; The arc length of described air channel second arc is 63mm ~ 65mm.

3. aircondition as claimed in claim 2, it is characterized in that, the arc length of described air channel first arc is 120.15mm; The arc length of described air channel second arc is 64.46mm.

4. aircondition as claimed in claim 1, is characterized in that, the center of circle O of described air channel first arc ₁with the center of circle O of described through-flow fan blade ₀place straight line O ₀o ₁, described air channel second arc center of circle O ₂with the center of circle O of described through-flow fan blade ₀place straight line O ₀o ₂between angle be 62 ° ~ 64 °.

5. aircondition as claimed in claim 4, is characterized in that, the center of circle O of described air channel first arc ₁with the center of circle O of described through-flow fan blade ₀place straight line O ₀o ₁, described air channel second arc center of circle O ₂with the center of circle O of described through-flow fan blade ₀place straight line O ₀o ₂between angle be 63 °.

6. aircondition as claimed in claim 1, it is characterized in that, the radius of described through-flow fan blade is R ₀, R ₁/ R ₀scope is 0.25 ~ 0.55, R ₂/ R ₀scope is 2.25 ~ 4.45.

7. aircondition as claimed in claim 6, it is characterized in that, the radius of described through-flow fan blade is R ₀, R ₁/ R ₀value is 0.45, R ₂/ R ₀value is 3.35.

8. aircondition as claimed in claim 1, is characterized in that, the radius R of described air channel first arc ₃scope is 77.5mm ~ 87.5mm, the radius R of described air channel second arc ₄scope is 78.5mm ~ 188.6mm.

9. aircondition as claimed in claim 8, is characterized in that, the radius R of described air channel first arc ₃scope is 85mm ~ 87mm, the radius R of described air channel second arc ₄scope is 185mm ~ 188mm.

10. aircondition as claimed in claim 9, is characterized in that, the radius R of described air channel first arc ₃for 86.67mm, the radius R of described air channel second arc ₄for 187.65mm.

11. airconditions as claimed in claim 1, it is characterized in that, described front snail tongue and the outer peripheral minimum clearance of described through-flow fan blade are 6.5mm ~ 7.5mm, the minimum clearance of described front snail tongue and described air channel second arc is 110mm ~ 112mm.

12. airconditions as claimed in claim 11, it is characterized in that, described front snail tongue and the outer peripheral minimum clearance of described through-flow fan blade are 7.12mm, the minimum clearance of described front snail tongue and described air channel second arc is 111mm.

13. airconditions as claimed in claim 12, it is characterized in that, the molded line of described front snail tongue comprises front snail tongue first arc, front snail tongue first straightway, front snail tongue second arc, front snail tongue second straightway, front snail tongue the 3rd arc successively, and the angular range between described front snail tongue first straightway and front snail tongue second straightway is 40 ° ~ 50 °.

14. airconditions as claimed in claim 13, is characterized in that, the radius of described front snail tongue first arc is 6.78mm, the radius of front snail tongue second arc is 3.05mm, the radius of front snail tongue the 3rd arc is 0.21mm.

15. airconditions as claimed in claim 13, is characterized in that, the angle between described front snail tongue first straightway and described front snail tongue second straightway is 46 °.

16. airconditions as claimed in claim 1, is characterized in that, described rear snail tongue and the outer peripheral minimum clearance of described through-flow fan blade are 5 ~ 6mm.

17. airconditions as claimed in claim 16, is characterized in that, described rear snail tongue and the outer peripheral minimum clearance of described through-flow fan blade are 5.43mm.

18. airconditions as claimed in claim 1, is characterized in that, the end angle of described rear snail tongue is 2 ° ~ 6 °.

19. airconditions as claimed in claim 18, is characterized in that, the end angle of described rear snail tongue is 3 °.

20. airconditions as claimed in claim 1, it is characterized in that, described aircondition also comprises housing, arranges air inlet in the front side of described housing, and described air inlet and described evaporimeter are oppositely arranged, and the rear side of described housing sets out air port.

21. airconditions stated as claim 20, is characterized in that, described front snail tongue is arranged on air outlet place, described front snail tongue and described housing clamping.

22. airconditions as claimed in claim 21, it is characterized in that, described aircondition also comprises base, and described air channel and described through-flow fan blade are vertically arranged relative to described base.

23. airconditions as claimed in claim 1, it is characterized in that, described air channel also comprises air channel the 3rd straightway, described air channel the 3rd straightway and described air channel second arc tangent, the starting point of described air channel the 3rd straightway, the terminal of air channel second arc, air channel the 3rd straightway overlap with the point of contact of described air channel second arc, and the length of described air channel the 3rd straightway is 20mm ~ 25mm.

24. 1 kinds of airconditions, comprise housing, base, end cap, evaporimeter, through-flow fan blade, front snail tongue, rear snail tongue and air channel, air channel is between through-flow fan blade and evaporimeter, it is characterized in that, air channel comprises air channel first arc, air channel first straightway and air channel second straightway, the center of circle O of air channel first arc ₁track be center of circle O with through-flow fan blade ₀for the center of circle, radius is R ₁circle, length is 115mm ~ 129mm; The starting point of air channel first straightway and the terminal of air channel first arc tangent, the length of described air channel first straightway is 10mm ~ 15mm, described air channel second straightway is connected with described air channel first straightway, and angle is 170 ° ~ 180 °, the length of described air channel second straightway is 60mm ~ 65mm.

25. airconditions as claimed in claim 24, is characterized in that, the arc length of described air channel first arc is 119mm ~ 129mm.

26. airconditions as claimed in claim 25, is characterized in that, the arc length of described air channel first arc is 126.7mm.

27. airconditions as claimed in claim 24, it is characterized in that, the length of described air channel first straightway is 13.22mm, the length of described air channel second straightway is 61.4mm.

28. airconditions as claimed in claim 24, is characterized in that, described air channel second straightway and described air channel first straightway angle are 174 °.

29. airconditions as claimed in claim 28, is characterized in that, the radius R of described air channel first arc ₃scope is 77.5mm ~ 87.5mm.

30. airconditions as claimed in claim 29, is characterized in that, the radius R of described air channel first arc ₃value is 78.5mm.

31. airconditions as claimed in claim 24, it is characterized in that, the molded line of described front snail tongue comprises front snail tongue first arc, front snail tongue first straightway, front snail tongue second arc, front snail tongue second straightway, front snail tongue the 3rd arc successively, angle between front snail tongue first straightway and front snail tongue second straightway is 25 ° ~ 35 °, front snail tongue first arc and front snail tongue first straightway tangent, front snail tongue second straightway and front snail tongue second arc and front snail tongue the 3rd arc tangent.

32. airconditions as claimed in claim 31, is characterized in that, the radius of described front snail tongue first arc is 5.57mm, the radius of front snail tongue second arc is 2.93mm, the radius of front snail tongue the 3rd arc is 0.20mm.

33. airconditions as claimed in claim 24, is characterized in that, described front snail tongue and the outer peripheral minimum clearance of through-flow fan blade are 2.50 ~ 3.50mm.

34. airconditions as claimed in claim 33, is characterized in that, described front snail tongue and the outer peripheral minimum clearance of through-flow fan blade are 3mm.

35. airconditions as claimed in claim 24, is characterized in that, the minimum clearance of described front snail tongue and described air channel second straightway is 50.50mm ~ 60.50mm.

36. airconditions as claimed in claim 35, is characterized in that, the minimum clearance of described front snail tongue and described air channel second straightway is 55.42mm.

37. airconditions as claimed in claim 24, is characterized in that, described rear snail tongue and the outer peripheral minimum clearance of through-flow fan blade are 6.5 ~ 7.5mm.

38. airconditions as claimed in claim 24, is characterized in that, described rear snail tongue and the outer peripheral minimum clearance of described through-flow fan blade are 6.32mm.

39. airconditions as claimed in claim 24, is characterized in that, the end angle of described rear snail tongue is 4 ° ~ 8 °.

40. airconditions as claimed in claim 39, is characterized in that, the end angle of described rear snail tongue is 6 °.

41. airconditions as claimed in claim 24, it is characterized in that, described aircondition also comprises housing, arranges air inlet in the front side of described housing, and described air inlet and described evaporimeter are oppositely arranged, and the rear side of described housing sets out air port.

42. airconditions as claimed in claim 41, it is characterized in that, through-flow fan blade is arranged on base and end cap, and the area of base is greater than the area of end cap.