New wind machine

[0058] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.

[0059] Reference below Figure 1-Figure 13 The fresh air blower 100 according to an embodiment of the present invention is described. The fresh air blower 100 can introduce fresh air into the indoor environment.

[0060] Reference figure 1 with figure 2 As shown, the new fan 100 according to the embodiment of the present invention may include a housing 1, a heat exchange core 2, a first air duct member 3 and a first fan assembly 4, a heat exchange core 2, a first air duct member 3 and a first fan assembly 4 A fan assembly 4 is arranged in the housing 1. For example, the heat exchange core 2 divides the space of the housing 1 into an independent first chamber 14 and a second chamber 15, and the first fan assembly 4 and the first air duct 3 are both located in the first chamber 14.

[0061] Such as figure 1 , image 3 with Figure 4 As shown, the housing 1 has a fresh air inlet 1a, a fresh air outlet 1b, a return air inlet 1c, and a return air outlet 1d, the housing 1 has a first side wall 11, and the heat exchange core 2 has a first airflow channel 21 and spaced apart from each other. In the second airflow channel 22, the air inlet end of the first airflow channel 21 is connected to the fresh air inlet 1a, and the air outlet end of the second airflow channel 22 is connected to the return air outlet 1d.

[0062] Such as figure 1 As shown, the first air duct 3 is connected between the heat exchange core 2 and the side wall with the return air inlet 1c of the housing 1, and a return air flow channel is formed in the first air duct 3, and the return air flow channel Both ends are respectively communicated with the return air inlet 1c and the air inlet end of the second air flow channel 22.

[0063] Reference figure 1 with Figure 4 As shown, as shown, the first fan assembly 4 drives the fresh air from the outlet end of the first airflow channel 21 to be discharged into the room from the fresh air outlet 1b, and the first fan assembly 4 and the first air duct 3 are located in the heat exchange core 2. The first fan assembly 4 is located on the same side and separated from each other. The first fan assembly 4 is located between the first side wall 11 and the first air duct member 3, wherein the air outlet end of the first air flow channel 21 of the heat exchange core 2 faces the entire first fan assembly 4, and at least part of the air outlet end of the first air flow channel 21 of the heat exchange core 2 faces the first air channel member 3.

[0064] For example, such as figure 1 with Figure 4 As shown, the air outlet end of the first air flow channel 21 of the heat exchange core 2 faces the first air duct member 3 and the first fan assembly 4, and the air duct member 3 and the first fan assembly 4 of the first chamber 14 are removed The space defines the airflow channel from the outlet end of the first airflow channel 21 to the air inlet end of the first fan assembly 4, and the fresh airflow from the outlet end of the first airflow channel 21 of the heat exchange core 2 passes through The flow ventilation channel flows to the air inlet end of the first fan assembly 4.

[0065] For another example, the air outlet end of the first air flow channel 21 of the heat exchange core 2 faces the entire first fan assembly 4, and the air outlet part of the first air flow channel 21 of the heat exchange core 2 faces the first air channel member 3. The air outlet end of the first air flow channel 21 of the heat exchange core 2, the part of the outer wall of the first air duct 3 facing the first air channel 21, the outer wall of the first fan assembly 4, and the housing 1 define the first air flow channel The fresh air flow out of the air outlet end of the first fan assembly 4 flows to the air flow channel at the air inlet end of the first fan assembly 4, and the fresh air flow out of the air outlet end of the first air flow channel 21 of the heat exchange core 2 flows to the first air channel through the flow channel. The air inlet end of the fan assembly 4.

[0066] Such as figure 2 As shown, the first fan assembly 4 includes a first centrifugal wind wheel 41, wherein the minimum distance between the rotation center line of the first centrifugal wind wheel 41 and the first side wall 11 is D1, and the first air duct 3 and the The minimum distance between one side wall 11 is E1, and D1 and E1 satisfy: 0.6≤[(E1-D1)/D1]≤1.4. For example, [(E1-D1)/D1] can be 0.7, 0.8, 0.9, 1, 1.1, 1.2, or 1.3.

[0067] It can be understood that, in the related art, the first fan assembly is arranged adjacent to the first side wall, resulting in a small air intake on the side of the air inlet end of the first fan assembly close to the first side wall, and a distance from the air inlet end of the first fan assembly The air intake on one side of the first side wall 11 is large, which causes uneven air flow to the air intake end of the first fan assembly, increases the resistance of the air flow, and causes the air flow of the new fan to be small and the working noise is large.

[0068] In this application, the minimum distance D1 between the rotation center line of the first centrifugal wind wheel 41 and the first side wall 11 and the minimum distance E1 between the first air duct 3 and the first side wall 11 Satisfaction: 0.6≤[(E1-D1)/D1]≤1.4, which is conducive to making the airflow out of the air outlet end of the first airflow channel 21 evenly flow to the air inlet end of the first fan assembly 4, thereby facilitating reduction The flow resistance of the airflow is beneficial to increase the exhaust air volume of the fresh air outlet 1b and reduce the working noise of the fresh air blower 100 at the same time. In addition, it makes the layout of the first fan assembly 4 and the first air duct 3 in the housing 1 reasonable. The structure is compact and easy to produce and process the fresh fan 100.

[0069] According to the fresh air blower 100 of the embodiment of the present invention, the minimum distance D1 between the rotation center line of the first centrifugal wind wheel 41 and the first side wall 11 and the distance between the first air duct 3 and the first side wall 11 The minimum distance E1 satisfies: 0.6≤[(E1-D1)/D1]≤1.4, which is beneficial to make the airflow out of the air outlet end of the first airflow channel 21 evenly flow to the air inlet end of the first fan assembly 4, thereby It is beneficial to reduce the air flow resistance, thereby helping to increase the exhaust air volume of the fresh air outlet 1b, and at the same time reduce the working noise of the fresh fan 100. In addition, the first fan assembly 4 and the first air duct 3 are in the housing 1 The layout is reasonable, the structure is compact, and it is easy to produce and process the new fan 100.

[0070] In some embodiments of the present invention, such as figure 2 As shown, D1 and E1 satisfy: 0.9≤[(E1-D1)/D1]≤1.1. Therefore, the centerline of rotation of the first centrifugal wind wheel 41 is arranged adjacent to the middle of the first air duct 3 and the first side wall 11, which is beneficial to further make the air flow out of the air outlet end of the first air flow channel 21 evenly It flows to the air inlet end of the first fan assembly 4, thereby reducing the air flow resistance, thereby helping to increase the exhaust air volume of the fresh air outlet 1b and reducing the operating noise of the fresh fan 100 at the same time. For example, [(E1-D1)/D1] can be 0.95, 1, 1.05, or 1.08.

[0071] Optionally, such as figure 2 with Figure 4 As shown, the first fan assembly 4 includes: a first volute 42 having a first air inlet 421 and a first air outlet 422, the first air outlet 422 is connected to the fresh air outlet 1b, and a first centrifugal wind wheel 41 is set in the first volute 42, the minimum distance between the first volute 42 and the first side wall 11 is C1, and C1 and D1 satisfy: 1/4≤C1/D1≤2/5. Wherein, the air inlet end of the first fan assembly 4 can be understood as the first air inlet 421. As a result, the layout of the first fan assembly 4 and the first air duct 3 in the housing 1 can be reasonable, the structure is compact, and the production and processing of the fresh fan 100 can be facilitated. At the same time, it is beneficial to make the rotation center of the first centrifugal wind wheel 41 The line is arranged adjacent to the middle of the first air duct member 3 and the first side wall 11, thereby reducing the air flow resistance to increase the air volume of the fresh fan 100 and reduce the operating noise. Optionally, C1/D1 is 1/3.

[0072] In some optional embodiments of the present invention, such as Figure 4 As shown, the first fan assembly 4 includes a first motor 43, the housing 1 includes a second side wall 12 and a third side wall 13, the second side wall 12 and the third side wall 13 are arranged in parallel, and the second side wall 12 is vertical On the rotation center line of the first centrifugal wind wheel 41, the first motor 43 is located between the second side wall 12 and the first volute 42, and the motor shaft of the first motor 43 passes through the first volute 42 and the first centrifugal wind The wheels 41 are connected, the minimum distance between the first volute 42 and the second side wall 12 is B1, the minimum distance between the first volute 42 and the third side wall 13 is A1, and B1 and A1 satisfy: 0.5≤B1 /A1≤0.95. Wherein, the side walls of the first volute 42 facing the second side wall 12 and the third side wall 13 are respectively provided with first air inlets 421. For example, B1/A1 can be 0.6, 0.7, 0.75, 0.8, or 0.9.

[0073] It can be understood that because the first motor 43 is located between the second side wall 12 and the first volute 42, the air inlet area of ​​the first volute 42 facing the third side wall 13 is larger than the first air inlet 421 The air inlet area of ​​a volute 42 facing the first air inlet 421 of the second side wall 12, therefore, by making B1/A1≤0.95, the first air inlet of the first volute 42 facing the third side wall 13 can be guaranteed The intake air volume of 421 is relatively large, thereby increasing the overall air intake volume of the first volute 42 to ensure the exhaust air volume of the fresh fan 100; in addition, by making B1/A1≥0.5, the first volute 42 can be made to face the second side The air inlet volume of the first air inlet 421 of the wall 12 is not too small, so as to ensure the air inlet volume of the first volute 42 as a whole, thereby ensuring the air discharge volume of the fresh fan 100.

[0074] Optionally, a plane parallel to the second side wall 12 is defined as a reference plane, the reference plane is located between the second side wall 12 and the third side wall 13, and the distance between the reference plane and the second side wall 12 is equal to the reference plane The distance between the surface and the third side wall 13, the axial ends of the first volute 42 are respectively located on both sides of the reference surface. Wherein, the side walls of the first volute 42 facing the second side wall 12 and the third side wall 13 are respectively provided with first air inlets 421. For example, the reference surface is like Figure 4 Reference plane N shown. Therefore, it is beneficial to ensure the air intake volume of the two first air inlets 421 of the first volute 42 and thereby ensure the air discharge volume of the fresh fan 100.

[0075] In some optional embodiments of the present invention, such as figure 1 As shown, the heat exchange core 2 is provided in the housing 1 to divide the space of the housing 1 into independent first chambers 14 and second chambers 15, and the first fan assembly 4 and the first air duct 3 are located in the first chamber. A chamber 14, the return air inlet 1c and the fresh air outlet 1b are located on the side wall of the housing 1 corresponding to the first chamber 14.

[0076] Such as figure 1 As shown, the fresh air fan 100 further includes a second air duct member 5 and a second fan assembly 6, the second air duct member 5 and the second fan assembly 6 are arranged in the second chamber 15, the return air outlet 1d and the fresh air inlet 1a Located on the side wall of the housing 1 corresponding to the second chamber 15, the second air duct member 5 is connected between the heat exchange core 2 and the side wall of the housing 1 with the fresh air inlet 1a, and the second air duct member 5 A fresh air flow channel is formed inside, and both ends of the fresh air flow channel are respectively connected to the fresh air inlet 1a and the air inlet end of the first air flow channel 21, such as figure 2 As shown, the second fan assembly 6 includes a second centrifugal wind wheel 61. The second fan assembly 6 drives the return air from the air outlet end of the second airflow channel 22 to be discharged to the outdoors from the return air outlet 1d. The second air duct 5 and The second fan assembly 6 is spaced apart, and the second fan assembly 6 is located between the first side wall 11 and the second air duct member 5.

[0077] Among them, such as figure 2 As shown, the minimum distance between the rotation center line of the second centrifugal wind wheel 61 and the first side wall 11 is D2, and the minimum distance between the second air duct member 5 and the first side wall 11 is E2, where D2 And E2 satisfies: 0.6≤[(E2-D2)/D2]≤1.4. For example, [(E2-D2)/D2] can be 0.7, 0.8, 0.9, 1, 1.1, 1.2, or 1.3.

[0078] It should be noted that at least part of the air outlet end of the second airflow channel 22 faces the second air duct member 5, and the air outlet end of the second airflow channel 22 of the heat exchange core 2 faces the entire second fan assembly 6, and the heat exchange At least part of the air outlet end of the second air flow channel 22 of the core 2 faces the second air channel member 5.

[0079] For example, such as figure 1 with figure 2 As shown, the air outlet end of the second air flow channel 22 of the heat exchange core 2 faces the second air duct member 5 and the second fan assembly 6, and the second cavity 15 is removed from the second air duct member 5 and the second fan assembly The space of 6 defines the return air flow from the outlet end of the second air flow channel 22 to the air inlet end of the second fan assembly 6 and flows out from the air outlet end of the second air channel 22 of the heat exchange core 2 The return air flow flows to the air inlet end of the second fan assembly 6 through the flow ventilation channel;

[0080] For another example, the air outlet end of the second air flow channel 22 of the heat exchange core 2 faces the entire second fan assembly 6, and the air outlet end of the second air flow channel 22 of the heat exchange core 2 faces the second air channel member 5. The space of the second chamber 15 excluding the part of the second air duct member 5 that is not facing the second air flow channel 22 and the outer wall of the second fan assembly 6 defines the return air flow to flow out of the air outlet end of the second air flow channel 22 The airflow flows to the airflow channel at the air inlet end of the second fan assembly 6, and the return airflow from the air outlet end of the second airflow channel 22 of the heat exchange core 2 flows to the inlet air of the second fan assembly 6 through the airflow channel end.

[0081] It can be understood that, in the related art, the second fan assembly is arranged adjacent to the first side wall, resulting in a small air intake on the side of the air inlet end of the second fan assembly close to the first side wall, and a distance from the air inlet end of the second fan assembly. The air intake on one side of the first side wall is large, which causes uneven air flow to the air inlet end of the second fan assembly, increases the resistance of the air flow, and causes the air return outlet of the fresh fan to have a small air flow and high operating noise.

[0082] In this application, the minimum distance D2 between the rotation center line of the second centrifugal wind wheel 61 and the first side wall 11 and the minimum distance E2 between the second air duct member 5 and the first side wall 11 Satisfaction: 0.6≤[(E2-D2)/D2]≤1.4, which is conducive to making the airflow out of the air outlet end of the second airflow channel 22 evenly flow to the air inlet end of the second fan assembly 6, thereby facilitating reduction The air flow resistance is beneficial to increase the exhaust air volume of the return air outlet 1d while reducing the operating noise of the fresh fan 100. In addition, the second fan assembly 6 and the second air duct member 5 are reasonably arranged in the housing 1 , Compact structure, easy to produce and process the new fan 100.

[0083] Optionally, such as figure 2 As shown, D2 and E2 satisfy: 0.9≤[(E2-D2)/D2]≤1.1. Therefore, the rotation center line of the second centrifugal wind wheel 61 is arranged adjacent to the middle of the second air duct member 5 and the first side wall 11, which is beneficial to further make the return air flow out of the air outlet end of the second air flow channel 22 It evenly flows to the air inlet end of the second fan assembly 6 so as to reduce the air flow resistance, thereby helping to increase the exhaust air volume of the exhaust outlet and reduce the operating noise of the fresh fan 100 at the same time. For example, [(E2-D2)/D2] can be 0.95, 1, 1.05, or 1.08.

[0084] In some optional embodiments of the present invention, such as figure 2 with image 3 As shown, the second fan assembly 6 includes: a second volute 62, the second volute 62 has a second air inlet 621 and a second air outlet 622, the second air outlet 622 is connected to the return air outlet 1d, the second centrifugal wind The wheel 61 is arranged in the second volute 62, the minimum distance between the second volute 62 and the first side wall 11 is C2, and C2 and D2 satisfy: 1/4≤C2/D2≤2/5. The air inlet end of the second fan assembly 6 can be understood as the second air inlet 621. Therefore, it is beneficial to make the layout of the second fan assembly 6 and the second air duct member 5 in the housing 1 reasonable, compact in structure, easy to produce and process the fresh air blower 100, and at the same time facilitate the rotation of the second centrifugal wind wheel 61 The center line is arranged adjacent to the middle of the second air duct member 5 and the first side wall 11, thereby reducing the air flow resistance to increase the air volume of the return air outlet 1d of the fresh fan 100 and reduce the working noise. Optionally, C2/D2 is 1/3.

[0085] Optionally, such as Figure 4 As shown, the second fan assembly 6 includes a second motor 63, the housing 1 includes a second side wall 12 and a third side wall 13, the second side wall 12 and the third side wall 13 are arranged in parallel, and the second side wall 12 is vertical On the rotation center line of the second centrifugal wind wheel 61, the second motor 63 is located between the second side wall 12 and the second volute 62, and the motor shaft of the second motor 63 passes through the second volute 62 and the second centrifugal wind The wheels 61 are connected, the minimum distance between the second volute 62 and the second side wall 12 is B2, the minimum distance between the second volute 62 and the third side wall 13 is A2, B2 and A2 satisfy: 0.5≤B2 /A2≤0.95. Wherein, the side walls of the second volute 62 facing the second side wall 12 and the third side wall 13 are respectively provided with second air inlets 621. For example, B2/A2 can be 0.6, 0.7, 0.75, 0.8, or 0.9.

[0086] Understandably, such as Figure 4 As shown, since the second motor 63 is located between the second side wall 12 and the second volute 62, the air inlet area of ​​the second air inlet 621 of the second volute 62 facing the third side wall 13 is larger than that of the second volute. The air inlet area of ​​the casing 62 facing the second air inlet 621 of the second side wall 12, therefore, by making B2/A2≤0.95, it can be ensured that the second volute 62 faces the second air inlet 621 of the third side wall 13 The intake air volume is large, thereby increasing the overall air intake volume of the second volute 62, thereby ensuring the exhaust air volume of the return air outlet 1d of the fresh fan 100; in addition, by making B2/A2≥0.5, the direction of the second volute 62 can be made The air inlet volume of the second air inlet 621 of the second side wall 12 is not too small, so as to ensure the air inlet volume of the second volute 62 as a whole, thereby ensuring the air volume of the return air outlet 1d of the fresh fan 100.

[0087] In some optional embodiments of the present invention, a plane parallel to the second side wall 12 is defined as a reference plane, the reference plane is located between the second side wall 12 and the third side wall 13, and the reference plane is connected to the second side The distance between the walls 12 is equal to the distance between the reference surface and the surface of the third side wall 13, and the two axial ends of the second volute 62 are respectively located on both sides of the reference surface. Wherein, the side walls of the second volute 62 facing the second side wall 12 and the third side wall 13 are respectively provided with second air inlets 621. For example, the reference surface is like Figure 4 Reference plane N shown. Therefore, it is beneficial to ensure the air intake volume of the two second air inlets 621 of the second volute 62, and thereby ensure the air discharge volume of the return air outlet 1d of the fresh fan 100.

[0088] Optionally, refer to Figure 5 As shown, the first volute 42 is called the volute 7, or the second volute 62 is called the volute 7; the volute 7 includes a first volute portion 71 and a second volute portion 72, and the first volute portion 71 It is clamped with the second volute portion 72. It is understandable that at least one of the first volute 42 and the second volute 62 is called the volute 7. The first volute 42 may be called the volute 7, or the second volute 62 may be called the volute. The casing 7 or the first volute 42 and the second volute 62 are both referred to as the volute 7. As a result, the first volute part 71 and the second volute part 72 are clamped together, so that the first volute part 71 and the second volute part 72 can be easily disassembled and assembled.

[0089] In some optional embodiments of the present invention, such as Image 6 with Figure 7 As shown, the first volute portion 71 is provided with a slot 711, and the second volute portion 72 is provided with a buckle 721 that cooperates with the slot 711. Therefore, the structure is simple, which is beneficial to reduce the production cost. Of course, the present invention is not limited to this, and the first volute portion 71 may be provided with a buckle 721, and the second volute portion 72 may be provided with a groove 711 that cooperates with the buckle 721.

[0090] Optionally, such as Figure 7 As shown, a mating part 712 is formed on the outer peripheral wall of the first volute part 71. The mating part 712 includes a first connecting section 7121 and a second connecting section 7122. One end of the first connecting section 7121 is connected to the first volute part 71 The other end of the first connecting section 7121 extends radially outward, one end of the second connecting section 7122 is connected to the other end of the first connecting section 7121, and the other end of the second connecting section 7122 is along the axial direction, Extending in the direction close to the second volute portion 72, the mating portion 712 and the outer peripheral wall of the first volute portion 71 define a clamping slot 711; the buckle 721 includes a first clamping section 7211 and a second clamping section 7212. One end of a clamping section 7211 is connected to the outer peripheral wall of the second volute portion 72, the other end of the first clamping section 7211 extends radially outward, and one end of the second clamping section 7212 is connected to the first clamping section 7211 The other end of the second clamping section 7212 extends in the axial direction toward the direction close to the first volute portion 71, and the second clamping section 7212 is adapted to be clamped into the clamping slot 711. Therefore, after the first volute part 71 and the second volute part 72 are assembled, the second clamping section 7212 is adapted to be inserted into the clamping groove 711 to realize the alignment of the first volute part 71 and the second volute part 72. The sealing of the connection point is beneficial to avoid air leakage at the connection point of the first volute portion 71 and the second volute portion 72.

[0091] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, only for ease of description The present invention and simplified description do not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0092] In some optional embodiments of the present invention, such as Figure 7 As shown, the surface of the second connecting section 7122 facing the central axis of the volute 7 is provided with a first guide surface 71221. In the direction from the first volute portion 71 to the second volute portion 72, the first guide surface 71221 extends obliquely in a direction away from the central axis of the volute 7. Thus, when the second clamping section 7212 is clamped into the clamping slot 711, the first guide surface 71221 can guide the second clamping portion into the clamping slot 711, thereby facilitating the realization of the first volute portion 71 and the second volute portion 72 assembly. Among them, the central axis of the volute 7 refers to the central axis of the volute part of the volute 7.

[0093] Optionally, such as Figure 7 As shown, a second guide surface 72121 is provided on the surface of the second clamping section 7212 facing the central axis of the volute 7, and in the direction from the second volute part 72 to the first volute part 71, the first The two guide surfaces 72121 extend obliquely in a direction away from the center axis of the volute 7. Therefore, when the second clamping section 7212 is clamped into the groove 711, the second guide surface 72121 can guide the second clamping section 7212 into the groove 711, thereby facilitating the realization of the first volute portion 71 and the second volute. Assembly between parts 72.

[0094] In some alternative embodiments of the present invention, refer to Figure 8 , Figure 11-Figure 13 As shown, the outer peripheral wall of the first volute portion 71 is provided with a guide hole 713, and the outer peripheral wall of the second volute portion 72 is provided with a first guide portion 722, and the first guide portion 722 is adapted to extend into the guide hole 713. Therefore, when assembling the first volute part 71 and the second volute part 72 together, the first guide part 722 extends into the guide hole 713 to realize the first volute part 71 and the second volute part 72 in the circumference. The upward positioning is beneficial to improve the accuracy of assembly between the first volute portion 71 and the second volute portion 72.

[0095] Optionally, such as Image 6 with Figure 8 As shown, the outer peripheral wall of the first volute portion 71 is provided with a second guide portion 714. The second guide portion 714 includes two first guide plates 7141 and a second guide plate 7142. The casing 7 is arranged at intervals in the circumferential direction, one end of each first guide plate 7141 is connected to the outer peripheral wall of the first volute portion 71, and the other end of each first guide plate 7141 extends outward in the radial direction. Two ends of the two guide plates 7142 are respectively connected to the other ends of the two first guide plates 7141, and the second guide portion 714 and the outer peripheral wall of the first volute portion 71 define a guide hole 713. Therefore, the structure is simple, and it is helpful to ensure the connection strength between the second guide portion 714 and the outer peripheral wall of the first volute portion 71, and avoid the first guide portion 722 and the guide hole 713 during the operation of the fresh fan 100. Disengagement between.

[0096] In some optional embodiments of the present invention, such as Picture 11 with Figure 13 As shown, in the direction from the first volute portion 71 to the second volute portion 72, the side surface of the second guide plate 7142 facing the central axis of the volute 7 is inclined to face away from the central axis of the volute 7 The direction extends to define a third guide surface 71421. Therefore, when the first guide portion 722 extends into the guide hole 713, the third guide surface 71421 can guide the first guide portion 722 into the guide hole 713, so that the first guide portion 722 and the guide hole 713 can cooperate with each other.

[0097] Optionally, such as Picture 12 As shown, in the direction from the first volute portion 71 to the second volute portion 72, the distance between the two first guide plates 7141 gradually increases. Thus, it is convenient for the first guide portion 722 to extend into the guide hole 713, so that the first guide portion 722 and the guide hole 713 can cooperate with each other.

[0098] In some optional embodiments of the present invention, such as Picture 11 As shown, the first guide portion 722 includes a body portion 7221 and a flange portion 7222. One end of the body portion 7221 is connected to the outer peripheral wall of the second volute portion 72, and the other end of the body portion 7221 faces the first volute along the axial direction. The volute portion 71 extends in the direction of the volute portion 71, the flange portion 7222 is connected to the other end of the body portion 7221 and extends radially outward, the flange portion 7222 passes through the guide hole 713, and the flange portion 7222 abuts against the guide hole 713 The end surface away from the second volute portion 72. Thus, through the abutment and fit of the flange portion 7222 and the end surface of the guide hole 713 away from the second volute portion 72, the first volute portion 71 and the second volute portion 72 can be aligned in the circumferential direction of the volute 7 Upper limit. For example, refer to Figure 5 As shown, after the flanged portion 7222 passes through the guide hole 713 and the flanged portion 7222 abuts on the end surface of the guide hole 713 away from the second volute portion 72, the first volute portion 71 and the second volute portion 72 are connected by threaded fasteners. Of course, the present invention is not limited to this. The first guide portion 722 may also only include a body portion 7221. One end of the body portion 7221 is connected to the outer peripheral wall of the second volute portion 72, and the other end of the body portion 7221 faces in the axial direction. Extending in a direction close to the first volute portion 71, the body portion 7221 extends into the guide hole 713 to realize the positioning of the first volute portion 71 and the second volute portion 72 in the circumferential direction.

[0099] Optionally, such as Picture 11 As shown, the side surface of the flange portion 7222 away from the central axis of the volute 7 is formed with a fourth guide surface 72221. In the direction from the first volute portion 71 to the second volute portion 72, the second guide surface 72121 It extends obliquely in a direction away from the central axis of the volute 7. Therefore, when the first volute portion 71 and the second volute portion 72 are assembled together, the fourth guide surface 72221 can guide the flange portion 7222 into the guide hole 713, thereby facilitating the flange portion 7222 from the guide hole 713. Through.

[0100] In some optional embodiments of the present invention, such as Figure 5 with Picture 9 As shown, a support 8 is also provided between the volute 7 and the housing 1. The support 8 is provided in the housing 1 and is connected to the housing 1. The volute 7 is provided with a plurality of support legs 723, and the volute 7 It is connected to the support 8 through a plurality of support legs 723. Each supporting leg 723 includes a supporting leg body 7231 and a fixing plate 7232. One end of the supporting leg body 7231 is connected to the volute 7, the other end of the supporting leg body 7231 extends toward the direction close to the support 8, and one end of the fixing plate 7232 is connected to The other end of the supporting leg body 7231 is connected, and the other end of the fixing plate 7232 extends outward along the radial direction of the volute 7. The side wall of the fixing plate 7232 facing the support 8 is provided with positioning protrusions 72321, and the support 8 is provided There are a plurality of positioning holes 81, and the plurality of positioning protrusions 72321 are matched with the plurality of positioning holes 81 in a one-to-one correspondence. Therefore, through the cooperation of the positioning protrusion 72321 and the positioning hole 81, it is convenient to mount the multiple support legs 723 on the support 8.

[0101] For example, such as Figure 5 As shown, the fixing plate 7232 and the support 8 are also connected by threaded fasteners, so that through the cooperation of the positioning protrusion 72321 and the positioning hole 81, the pre-positioning between the support leg 723 and the support 8 can be realized, and then The fixing plate 7232 and the support 8 are connected by threaded fasteners, which is beneficial to improve the assembly accuracy between the support leg 723 and the support 8.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples" etc. means to incorporate the implementation The specific features, structures, materials or characteristics described by the examples or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above-mentioned terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

[0103] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and modifications can be made to these embodiments without departing from the principle and purpose of the present invention. The scope of the present invention is defined by the claims and their equivalents.