Air conditioner

Abstract

The application provides an air conditioner, and relates to the technical field of air conditioners. The air conditioner comprises a cabinet body and an air guide assembly. The air guide assembly comprises an air guide piece. The cabinet body is provided with an air outlet, and the air guide piece is arranged in the cabinet body and corresponds to the air outlet. The air guide piece has opposite air inlet faces and air outlet faces. The air guide piece is provided with an air guide channel, the air guide channel penetrates through the air inlet faces and the air outlet faces, the air guide channel forms an air inlet on one side of the air inlet faces, and the air guide channel forms an air outlet on one side of the air outlet faces. The size of the air inlet in the height direction of the cabinet body is greater than the size in the width direction of the cabinet body. The air guide assembly can increase the flow collection range and make the air flow more smooth, thereby improving the air supply of the axial flow cabinet.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to an air conditioner. Background Technology

[0002] Axial flow cabinet air conditioners typically consist of a casing, a heat exchanger, air guides, and an axial flow fan. The casing has an air inlet, and the heat exchanger is installed inside the casing corresponding to the air inlet. The air guides are arranged to match the air outlet of the casing, and the axial flow fan is positioned corresponding to the air guides. Its simple duct structure allows for large air volume and long air delivery distance, enabling rapid air replacement and meeting the ventilation needs of large spaces.

[0003] To protect the impeller, guide airflow, and improve fan efficiency, axial flow fan blades are usually fitted with air guide rings. However, the air inlets of existing air guide rings are mostly circular, and the specifications of the air inlets are limited by the size of the cabinet unit. This results in a limited air collection range of the air guide ring, which cannot fully guide the airflow in the large cavity inside the casing into the impeller rotation area, thus restricting the improvement of the air volume of the axial flow cabinet unit. Utility Model Content

[0004] The problem solved by this invention is how to increase the air collection range of the air guide ring, thereby increasing the air volume of the axial flow cabinet air conditioner.

[0005] To address the aforementioned issues, this invention provides an air conditioner that can increase the airflow range of the air guide assembly and allow for smoother airflow, thereby improving the air volume of the axial flow cabinet air conditioner.

[0006] This utility model provides an air conditioner, which includes a cabinet body and an air guide assembly; the air guide assembly includes an air guide component. The cabinet body is provided with an air outlet, and the air guide is provided in the cabinet body and is provided corresponding to the air outlet. The air guide has a relative air inlet surface and an air outlet surface; The air guide is provided with an air guide channel, which extends from the air inlet surface through the air outlet surface. The air guide channel forms an air inlet on one side of the air inlet surface and an air outlet on one side of the air outlet surface. The size of the air inlet in the height direction of the cabinet body is greater than the size in the width direction of the cabinet body.

[0007] Existing axial flow air conditioner cabinet units have circular air inlets for their air guide components. The diameter of the air inlet is limited by the width of the unit body, resulting in a limited airflow collection range for the air guide ring. This limits the effective channeling of airflow from the large cavities within the unit body to the rotation area of ​​the axial fan blades, thus restricting the increase in airflow volume. This application addresses this by setting the height of the air inlet of the air guide component to be greater than its width, increasing the inlet area and improving space utilization. Most importantly, the increased inlet area expands the airflow collection range of the air guide component, allowing for more effective channeling of airflow from the large cavities within the unit body to the rotation area of ​​the axial fan blades, thereby increasing the airflow volume of the axial flow air conditioner. The increased inlet area also ensures smoother airflow into the inlet, further enhancing airflow.

[0008] In an optional embodiment, the air guide channel includes an air guide section and a ventilation section that are interconnected. The air guide section is located on one side of the air inlet surface, the ventilation section is located on one side of the air outlet surface, the air inlet is formed on the side of the air guide section away from the ventilation section, and the air outlet is formed on the side of the ventilation section away from the air guide section. The ventilation area of ​​the air outlet is smaller than that of the air inlet.

[0009] This application achieves long-distance air delivery by making the ventilation area of ​​the air outlet smaller than that of the air inlet.

[0010] In an optional embodiment, the ventilation area of ​​the cross section of the air guide section gradually decreases in the direction from the air inlet to the air outlet.

[0011] This application allows the ventilation area of ​​the air guide section to gradually decrease in the direction from the air inlet to the air outlet, which can avoid the generation of eddies due to abrupt changes in cross-section and reduce aerodynamic noise.

[0012] In an optional embodiment, the ventilation section of the ventilation segment is circular, the ventilation section at the connection between the air guide section and the ventilation segment is circular, the cross-section of the air inlet is elliptical, and the ventilation section of the air guide section gradually changes from elliptical to circular in the direction from the air inlet to the air outlet.

[0013] This application sets the cross-section of the air inlet to an elliptical shape, which increases the airflow collection range and effectively guides the airflow from the large cavity inside the casing into the rotation area of ​​the axial fan blades. Secondly, it also improves the problem of vortices. It guides the air smoothly into the axial fan blades, ensuring that the airflow impacts the axial fan blades at the optimal angle of attack, reducing energy loss at the inlet.

[0014] In an optional embodiment, the major axis of the ellipse of the air inlet cross-section is parallel to the height direction of the cabinet, and the minor axis is parallel to the width direction of the cabinet.

[0015] This application makes the major axis of the ellipse of the air inlet cross-section parallel to the height direction of the cabinet, and the minor axis parallel to the width direction of the cabinet. In this way, the major and minor axes of the air inlet can be made as large as possible in a limited space, and the air collection range can also be increased.

[0016] In an optional embodiment, the minor axis of the ellipse of the air inlet cross-section is larger than the diameter of the ventilation section.

[0017] This application increases the air volume by making the minor axis of the ellipse of the air inlet cross-section larger than the diameter of the ventilation section.

[0018] In an optional embodiment, the ratio of the major axis to the minor axis of the ellipse of the air inlet cross-section ranges from 1.15 to 1.35.

[0019] This application sets the ratio of the major axis to the minor axis of the ellipse of the air inlet cross-section to a range of 1.15-1.35, which can increase the air volume.

[0020] In an optional embodiment, the air guide assembly further includes an axial flow fan blade, which is installed on the air guide section and the ventilation section, and the ratio of the length of the air guide section in the axial direction to the axial thickness of the axial flow fan blade is in the range of 0.5-0.8.

[0021] This application sets the ratio of the axial length of the air guide section to the axial thickness of the axial flow fan blade to a range of 0.5-0.8, which can increase the air volume.

[0022] In an optional embodiment, the ratio of the distance between the blade tip of the axial flow fan blade and the air inlet surface to the axial thickness of the axial flow fan blade is greater than 0.15.

[0023] This application sets the ratio of the distance between the blade tip and the air inlet surface of the axial flow fan blade to the axial thickness of the axial flow fan blade to be greater than 0.15, which can increase the air intake.

[0024] In an optional embodiment, the ratio of the size of the short shaft of the air inlet to the diameter of the axial flow fan blade is greater than 1.05.

[0025] This application sets the ratio of the size of the short shaft of the air inlet to the diameter of the axial fan blade to be greater than 1.05, which can increase the air volume while avoiding interference between the two. Attached Figure Description

[0026] Figure 1 A schematic diagram of the air guide assembly of the air conditioner provided in this embodiment of the utility model; Figure 2 Another structural schematic diagram of the air guide assembly of the air conditioner provided in an embodiment of this utility model; Figure 3 A cross-sectional view of the air guide assembly of an air conditioner provided in an embodiment of this utility model; Figure 4 A schematic diagram of the air guide component of the air guide assembly of the air conditioner provided in this embodiment of the utility model; Figure 5 Another structural schematic diagram of the air guide component of the air guide assembly of the air conditioner provided in this embodiment of the utility model; Figure 6 A cross-sectional view of the air guide component of the air guide assembly of the air conditioner provided in this embodiment of the utility model; Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 A graph showing the relationship between the ratio of the major axis to the minor axis of the air inlet of the air guide component of the air conditioner provided in this embodiment and the change in the air volume growth rate. Figure 9 A graph showing the relationship between the ratio of t and w of the air guide component of the air guide assembly of the air conditioner provided in this embodiment and the change in air volume growth rate; Figure 10 The diagram shows the fluid simulation analysis of the prototype. Figure 11 Fluid simulation analysis diagram of the air guide component of the air conditioner provided in the embodiment of this utility model.

[0027] Reference numerals: 100-Air guide assembly; 110-Air guide component; 111-Air inlet surface; 112-Air outlet surface; 113-Air guide channel; 114-Air inlet; 115-Air outlet; 116-Air guide section; 117-Ventilation section; 130-Axial flow fan blade; 150-Motor. Detailed Implementation

[0028] In axial flow cabinet air conditioners, air guide rings are typically added around the axial fan blades to protect the impeller, guide airflow, and improve fan efficiency. Existing air guide rings mostly have circular inlets, and due to cabinet size limitations, the 114mm inlet specification is restricted, resulting in a limited airflow collection range. This prevents the airflow from the large cavity inside the casing from being fully directed into the impeller's rotation area, thus hindering the improvement of the airflow volume of the axial flow cabinet air conditioner.

[0029] This application provides an air conditioner that can increase the air volume of an axial flow cabinet unit by increasing the air collection range of the air guide component and making the airflow smoother.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Please refer to Figure 1 This embodiment provides an air conditioner, which is an axial flow cabinet air conditioner that delivers air to the room through an axial flow fan.

[0032] In this embodiment, the air conditioner includes a cabinet unit and an air guide assembly 100. The cabinet unit has an air outlet, and the air guide assembly 100 is disposed within the cabinet unit and corresponds to the air outlet. The air guide assembly 100 can guide air to the air outlet, thereby directing air into the room.

[0033] The cabinet unit also contains a heat exchanger, which can process the air passing through it to achieve cooling or heating.

[0034] Please refer to Figures 1 to 7 In this embodiment, the air guiding assembly 100 includes an air guiding component 110. The air guiding component 110 is disposed within the cabinet body and corresponds to the air outlet. The air guiding component 110 can guide air to the air outlet, thereby guiding air into the room. The air guiding component 110 has an opposing air inlet surface 111 and an air outlet surface 112. The air guiding component 110 is provided with an air guiding channel 113. The air guiding channel 113 extends from the air inlet surface 111 through the air outlet surface 112. An air inlet 114 is formed on one side of the air inlet surface 111 in the air guiding channel 113. An air outlet 115 is formed on one side of the air outlet surface 112 in the air guiding channel 113. The dimension of the air inlet 114 in the height direction of the cabinet body is larger than its dimension in the width direction of the cabinet body.

[0035] In this embodiment, the size of the air inlet 114 of the air guide 110 in the height direction of the cabinet body is set to be larger than the size in the width direction of the cabinet body. This increases the area of ​​the air inlet 114 and improves space utilization. Most importantly, the increased area of ​​the air inlet 114 increases the air collection range of the air guide 110, which can effectively guide the airflow in the large cavity inside the cabinet body into the rotation area of ​​the axial fan blade 130, thereby increasing the air volume of the axial flow cabinet air conditioner. The increased area of ​​the air inlet 114 also allows the airflow to enter the air inlet 114 more smoothly, which can also increase the air volume.

[0036] The air guide assembly 100 also includes axial flow fan blades corresponding to the air guide channel 113. The air collection range refers to the three-dimensional spatial region in which the axial flow fan blade 130 can effectively capture, accelerate and guide the airflow along the axial direction when it is rotating, through the work and guiding effect of the blades on the airflow.

[0037] Please refer to Figures 1 to 7Furthermore, the air guiding duct 113 includes an interconnected air guiding section 116 and a ventilation section 117. The air guiding section 116 and the ventilation section 117 are coaxially arranged, with the air guiding section 116 located on one side of the air inlet surface 111 and the ventilation section 117 located on one side of the air outlet surface 112. An air inlet 114 is formed on the side of the air guiding section 116 away from the ventilation section 117. An air outlet 115 is formed on the side of the ventilation section 117 away from the air guiding section 116. The ventilation area of ​​the air outlet 115 is smaller than the ventilation area of ​​the air inlet 114.

[0038] In this embodiment, by making the ventilation area of ​​the air outlet 115 smaller than that of the air inlet 114, long-distance air delivery can be achieved.

[0039] Please refer to Figures 1 to 7 Furthermore, the ventilation area of ​​the cross section of the air guide section 116 gradually decreases in the direction from the air inlet 114 to the air outlet 115.

[0040] In this embodiment, the ventilation area of ​​the cross section of the air guide section 116 gradually decreases in the direction from the air inlet 114 to the air outlet 115. This can avoid the generation of eddies due to abrupt changes in the cross section and reduce aerodynamic noise.

[0041] In this embodiment, the ventilation section 117 has a circular cross-section. The ventilation section at the connection between the air guide section 116 and the ventilation section 117 is circular, and the cross-section of the air inlet 114 is elliptical. The ventilation section of the air guide section 116 gradually changes from elliptical to circular in the direction from the air inlet 114 to the air outlet 115.

[0042] In this embodiment, the cross-section of the air inlet 114 is set to an elliptical shape, which increases the airflow collection range and fully guides the airflow in the large cavity inside the housing into the rotation area of ​​the axial fan blade 130. Secondly, it also improves the vortex problem. It guides the air smoothly into the axial fan blade 130, ensuring that the airflow impacts the axial fan blade 130 at the optimal angle of attack, reducing energy loss at the inlet.

[0043] The circular ventilation section at the connection between the air guide section 116 and the ventilation section 117 can be understood as the end of the air guide section 116 away from the air inlet 114 being circular, while the end of the air inlet 114 is elliptical. The air guide section 116 gradually transitions from an ellipse to a perfect circle in the air intake direction, achieving a smooth curved surface transition. The cross-sections of the air guide section 116 along both the major and minor axes are isosceles trapezoids.

[0044] Please refer to Figures 1 to 7 Furthermore, the major axis of the ellipse of the cross-section of the air inlet 114 is parallel to the height direction of the cabinet, and the minor axis is parallel to the width direction of the cabinet.

[0045] In this embodiment, the major axis of the ellipse of the cross-section of the air inlet 114 is parallel to the height direction of the cabinet, and the minor axis is parallel to the width direction of the cabinet. In this way, the major and minor axes of the air inlet 114 can be as large as possible in a limited space, and the air collection range can also be increased.

[0046] In this embodiment, the minor axis of the ellipse of the cross-section of the air inlet 114 is larger than the diameter of the ventilation section 117.

[0047] In this embodiment, the minor axis of the ellipse of the cross-section of the air inlet 114 is larger than the diameter of the ventilation section 117, which can increase the air volume and reduce turbulence.

[0048] Please refer to Figures 1 to 8 In this embodiment, the ratio of the major axis to the minor axis of the ellipse of the cross-section of the air inlet 114 ranges from 1.15 to 1.35.

[0049] In this embodiment, the ratio of the major axis to the minor axis of the ellipse of the cross-section of the air inlet 114 is set to a range of 1.15-1.35, which can improve the air volume.

[0050] Please refer to Figure 8 In a set of experiments: Using the air inlet 114 of the prototype as a comparison basis, the air volume of the prototype's air inlet 114, i.e., the ratio of its major axis to its minor axis is 1, is taken as the base air volume. When the ratio of the major axis to the minor axis of the ellipse of the air inlet 114's cross-section is 1.1, the air volume increase rate compared to the prototype is 1.2%; when the ratio is 1.15, the air volume increase rate is 4.3%; when the ratio is 1.25, the air volume increase rate is 7%; when the ratio is 1.35, the air volume increase rate is 4.9%; and when the ratio is 1.4, the air volume increase rate is 1.8%.

[0051] The comparative experiments above show that setting the ratio of the major axis to the minor axis of the ellipse of the air inlet 114's cross-section within the range of 1.15-1.35 can achieve an increase in air volume compared to the prototype. The specific parameter for the ratio of the major axis to the minor axis of the ellipse of the air inlet 114's cross-section can be selected between 1.15 and 1.35 according to requirements, with 1.25 being the preferred value.

[0052] Please refer to Figures 1 to 7 and Figure 9In this embodiment, the axial flow fan blade 130 is installed in the air guide section 116 and the ventilation section 117. The ratio of the axial length of the air guide section 116 to the axial thickness of the axial flow fan blade 130 ranges from 0.5 to 0.8.

[0053] In this embodiment, the ratio of the axial length of the air guide section 116 to the axial thickness of the axial flow fan blade 130 is set to a range of 0.5-0.8, which can increase the air volume.

[0054] Please refer to Figure 9 The following are some sets of data from optimization tests based on the prototype: When the ratio of the axial length of the guide section 116 to the axial thickness of the axial fan blade 130 is 0.4, the air volume increase compared to the prototype is 0.9%; when the ratio is 0.5, the air volume increase compared to the prototype is 4.9%; when the ratio is 0.6, the air volume increase compared to the prototype is 6%; when the ratio is 0.7, the air volume increase compared to the prototype is 5.4%; and when the ratio is 0.8, the air volume increase compared to the prototype is 4.2%. The comparative experiments above show that setting the ratio of the axial length of the guide section 116 to the axial thickness of the axial flow fan blade 130 to 0.5-0.8 can achieve an increase in air volume compared to the prototype. Specific parameters can be set according to actual needs, with 0.6 being the preferred value.

[0055] It should be noted that the axis of the axial fan blade 130 coincides with the axis of the air guide duct 113, meaning that the axis of the axial fan blade 130 coincides with the axes of both the air guide section 116 and the ventilation section 117. The axial thickness of the axial fan blade 130 refers to the distance between the leading and trailing edges of the blade along the axial direction of the axial fan blade 130, and can also be expressed as the axial thickness of the blade. The axial thickness of the axial fan blade 130 is the distance represented by 't' in the figure, and the axial length of the air guide section 116 is the distance represented by 'w' in the figure.

[0056] Please refer to Figure 3 Specifically, the axial thickness t of the axial fan blade 130 is 100mm, and the axial length w of the air guide section 116 is 60mm. The ratio of t to L ranges from 0.2 to 0.2, and L is the thickness of the cabinet body, which is 455mm.

[0057] Furthermore, the ratio of the distance d between the blade tip and the air inlet surface 111 of the axial flow fan blade 130 to the axial thickness t of the axial flow fan blade 130 is greater than 0.15.

[0058] In this embodiment, the ratio of the distance between the blade tip of the axial flow fan 130 and the air inlet surface 111 to the axial thickness of the axial flow fan 130 is set to a value greater than 0.15, which can increase the air intake volume. It also ensures that the flow collection effect of the guide section 116 takes effect before the flow reaches the cross-section of the axial flow fan 130.

[0059] Specifically, the distance d between the blade tip of the axial flow fan blade 130 and the air inlet surface 111 is 16.2 mm.

[0060] In this embodiment, the ratio of the size of the short shaft of the air inlet 114 to the diameter of the axial flow fan blade 130 is greater than 1.05.

[0061] In this embodiment, the ratio of the size of the short shaft of the air inlet 114 to the diameter of the axial fan blade 130 is set to be greater than 1.05, which can increase the air volume while avoiding interference between the two.

[0062] Please refer to Figure 10 In the prototype, because both the air guide section 116 and the ventilation section 117 have circular cross-sections, a sudden change in cross-section occurs at the connection point, resulting in a noticeable vortex. Please refer to... Figure 11 In this embodiment, since the air inlet 114 is elliptical and gradually transitions to a perfect circle through the air guide section 116, the elimination of eddies can be clearly seen from the comparison of fluid simulation diagrams.

[0063] Please refer to Figure 3 In this embodiment, the air inlet surface 111 of the air guide 110 is provided with a motor bracket (not shown), and the motor 150 is mounted on the motor bracket. The axial fan blade 130 is connected to the output shaft of the motor 150.

[0064] Please refer to Figure 7 Secondly, it should be noted that the diameter of the ventilation section 117 can be set according to requirements. To facilitate manufacturing and ventilation, the ventilation section 117 is usually provided with a small draft angle towards the air inlet 114. The periphery of the air inlet 114 is also rounded, and the connection between the air guide section 116 and the ventilation section 117 can also be rounded to achieve a smooth transition.

[0065] In summary, this embodiment sets the dimension of the air inlet 114 of the air guide 110 in the height direction of the cabinet body to be larger than its dimension in the width direction of the cabinet body. This increases the area of ​​the air inlet 114 and improves space utilization. Most importantly, the increased area of ​​the air inlet 114 increases the airflow collection range of the air guide 110, effectively guiding the airflow from the large cavity inside the cabinet body into the rotation area of ​​the axial fan blade 130, thereby increasing the air volume of the axial flow cabinet unit. The increased area of ​​the air inlet 114 also allows for smoother airflow into the air inlet 114, further enhancing the airflow volume.

[0066] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An air conditioner, characterized in that, The air conditioner includes a cabinet body and an air guide assembly (100). The air guide assembly (100) includes an air guide element (110); The cabinet body is provided with an air outlet, and the air guide (110) is provided in the cabinet body and is provided corresponding to the air outlet. The air guide (110) has an air inlet surface (111) and an air outlet surface (112) with opposite sides. The air guide (110) is provided with an air guide channel (113), which extends from the air inlet surface (111) through the air outlet surface (112). The air guide channel (113) forms an air inlet (114) on one side of the air inlet surface (111) and an air outlet (115) on one side of the air outlet surface (112). The air inlet (114) is larger in the height direction of the cabinet body than in the width direction of the cabinet body.

2. The air conditioner according to claim 1, characterized in that, The air guide channel (113) includes an interconnected air guide section (116) and a ventilation section (117). The air guide section (116) is located on one side of the air inlet surface (111), and the ventilation section (117) is located on one side of the air outlet surface (112). The air inlet (114) is formed on the side of the air guide section (116) away from the ventilation section (117), and the air outlet (115) is formed on the side of the ventilation section (117) away from the air guide section (116). The ventilation area of ​​the air outlet (115) is smaller than that of the air inlet (114).

3. The air conditioner according to claim 2, characterized in that, The ventilation area of ​​the air guide section (116) gradually decreases in the direction from the air inlet (114) to the air outlet (115).

4. The air conditioner according to claim 3, characterized in that, The ventilation section (117) has a circular cross-section, the ventilation section at the connection between the air guide section (116) and the ventilation section (117) has a circular cross-section, the air inlet (114) has an elliptical cross-section, and the ventilation section of the air guide section (116) gradually changes from the elliptical shape to the circular shape in the direction from the air inlet (114) to the air outlet (115).

5. The air conditioner according to claim 4, characterized in that, The major axis of the ellipse of the cross-section of the air inlet (114) is parallel to the height direction of the cabinet, and the minor axis is parallel to the width direction of the cabinet.

6. The air conditioner according to claim 4, characterized in that, The minor axis of the ellipse of the cross section of the air inlet (114) is larger than the diameter of the ventilation section (117).

7. The air conditioner according to claim 6, characterized in that, The ratio of the major axis to the minor axis of the ellipse of the cross section of the air inlet (114) ranges from 1.15 to 1.

35.

8. The air conditioner according to any one of claims 4-7, characterized in that, The air guide assembly (100) further includes an axial flow fan blade (130), which is installed on the air guide section (116) and the ventilation section (117), and the ratio of the axial length of the air guide section (116) to the axial thickness of the blade of the axial flow fan blade (130) is in the range of 0.5-0.

8.

9. The air conditioner according to claim 8, characterized in that, The ratio of the distance between the blade tip of the axial flow fan (130) and the air inlet surface (111) to the axial thickness of the blade of the axial flow fan (130) is greater than 0.

15.

10. The air conditioner according to claim 8, characterized in that, The ratio of the dimension of the short shaft of the air inlet (114) to the diameter of the axial flow fan blade (130) is greater than 1.05.

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