High-pressure forward-inclined impeller and fan for car washing

Abstract

The utility model relates to a high-pressure forward-inclined impeller and fan for washing a car. The high-pressure forward-inclined impeller and fan comprises a first wheel disc piece, a shaft disc piece, a blade piece and a second wheel disc piece. The impeller has the advantages that the blade pieces are connected with the first wheel disc piece and the second wheel disc piece in an inserted connection mode, so that compared with an existing installation method that the blade pieces are installed in a welding mode and the like, the weight of the whole impeller can be reduced by about 50% through the inserted connection mode, the assembly difficulty can be reduced, and the assembly efficiency is improved. The production cost can also be reduced; in addition, the first wheel disc piece and the shaft disc piece are connected in a riveting mode, so that compared with an existing bolt connection mode, the situation that bolts fail can be avoided, and the service life of the impeller is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of impellers, in particular to a high-pressure forward-inclined impeller and a fan for washing a car. Background Art

[0002] A car washing machine is a machine that uses a computer to control a brush and high-pressure water to automatically wash a car. It can be divided into: automatic car washing machine and coin-operated car washing machine. It is mainly composed of a control system, circuit, gas circuit, water circuit and mechanical structure. The car washing machine has the characteristics of simple operation, beautiful appearance, and little damage to the car paint. In recent years, it has been widely used in the automotive service industry. Traditional car wash shops are made up of a high-pressure water gun connected to tap water, plus a few large towels and some detergents. This is the main equipment of many car wash shops. The waste of water for car washing is serious. The circulating water washing equipment in the car wash room has become a decoration. A large amount of clean water is secretly used for car washing, and water-saving applications cannot be promoted. According to relevant statistics, according to this washing method, 100 million tons will be consumed nationwide every year.

[0003] Fans are composed of a fan cover, a fan impeller and a motor, wherein the fan impeller is composed of an end plate, blades connected to the end plate and a sleeve keyed to the motor output shaft; however, the existing impeller is a welded structure, which makes the impeller heavy, consumes a lot of power during use, has low energy efficiency, and is easily deformed after welding; in addition, the existing shaft disc and impeller are connected by bolts, which has the risk of locking failure.

[0004] Currently, no effective solution has been proposed for the problems existing in the related technology, such as the easy deformation of the impeller welding structure and the locking failure between the shaft disc and the impeller. Utility Model Content

[0005] The purpose of the utility model is to provide a high-pressure forward-inclined impeller and fan for car washing in view of the deficiencies in the prior art, so as to solve the problems existing in the related art such as the easy deformation of the impeller welding structure and the locking failure between the shaft disc and the impeller.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] In a first aspect, the utility model provides a high-pressure forward-inclined impeller for washing a car, comprising:

[0008] A first wheel disc member, wherein the first wheel disc member is used for mounting components;

[0009] A shaft disc component, the shaft disc component is connected to the first wheel disc component by riveting, and the shaft disc component is located at the center of the first wheel disc component and is coaxially arranged with the first wheel disc component, and the shaft disc component is used to be connected to the output shaft of the motor;

[0010] A plurality of blade members, wherein the plurality of blade members are arranged at the edge of the first wheel disc member and are arranged at intervals along the circumference of the first wheel disc member, and the first ends of the blade members are plug-connected with the first wheel disc member;

[0011] A second wheel disc member is disposed at the second end of the blade member and is plug-connected with the blade member.

[0012] In some of the embodiments, the first wheel disc member further comprises:

[0013] A mounting hole is provided at the center of the first wheel disc component and is used for mounting the shaft disc component.

[0014] In some of the embodiments, the first wheel disc member further comprises:

[0015] A riveting edge structure, which is integrally formed at the side wall of the mounting hole and is arranged around the circumference of the mounting hole to provide riveting conditions for the first wheel disc member and the shaft disc member;

[0016] The shaft disc member also includes:

[0017] A rivet head structure is integrally formed at the edge of one end of the shaft disc and is arranged around the circumference of the shaft disc to be riveted to the rivet edge structure.

[0018] In some of the embodiments, the first wheel disc member further comprises:

[0019] A rib structure is integrally formed on the first wheel disc component and is arranged along the circumference of the first wheel disc component to increase the structural strength of the first wheel disc component.

[0020] In some of the embodiments, the first wheel disc member further comprises:

[0021] A plurality of first slots, wherein the plurality of first slots are integrally formed at the edge of the first wheel disc, and the plurality of first slots are spaced apart along the circumference of the first wheel disc;

[0022] The second wheel disc also includes:

[0023] A plurality of second slots, wherein the plurality of second slots are integrally formed at the edge of the second wheel disc, and the plurality of second slots are spaced apart along the circumference of the second wheel disc;

[0024] The blade member also includes:

[0025] A first pin, the first pin being integrally formed at the first end of the blade member, the first pin being inserted into the corresponding first slot and connected to the first wheel member through bending;

[0026] A second plug pin is integrally formed at the second end of the blade member, and the second plug pin is inserted into the corresponding second slot and connected to the second wheel member by bending.

[0027] In some embodiments, the number of the first pin and the number of the second pin on one blade member are two respectively, and the first pin and the second pin are inserted into the corresponding first slot and the second slot respectively.

[0028] In some embodiments, a gap between a bend of the first pin and the first slot is 0.01 mm to 0.05 mm; a gap between a bend of the second pin and the second slot is 0.01 mm to 0.05 mm.

[0029] In some of the embodiments, the blade member is an arc-shaped plate-like structure, and the arc angle of the blade member is 50 degrees to 70 degrees; the angle between the blade member and the edges of the first wheel disc member and the second wheel disc member is 30 degrees to 60 degrees.

[0030] In some of the embodiments, the arc angle of the blade member is 60 degrees; the angle between the blade member and the edges of the first wheel disc member and the second wheel disc member is 45 degrees.

[0031] In a second aspect, the utility model further provides a fan, comprising:

[0032] Fan cover;

[0033] The high-pressure forward-inclined impeller as described in the second aspect, wherein the high-pressure forward-inclined impeller is arranged inside the fan cover;

[0034] A motor is arranged at the back of the fan cover and connected to the high-pressure forward-inclined impeller to drive the high-pressure forward-inclined impeller to rotate.

[0035] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0036] The utility model discloses a high-pressure forward-inclined impeller and fan for washing cars. By connecting the blade member to the first wheel disc member and the second wheel disc member by means of a plug-in connection, the weight of the entire impeller can be reduced by about 50% compared to the existing installation method of the blade member by means of welding or the like, which not only reduces the difficulty of assembly but also reduces the production cost. In addition, by riveting the first wheel disc member and the shaft disc member together, the bolt failure can be avoided compared to the existing bolt connection method, thereby increasing the service life of the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic plan view of a high-pressure forward-inclined impeller according to an embodiment of the utility model;

[0038] Figure 2 is a schematic diagram of a first wheel disc according to an embodiment of the utility model;

[0039] Figure 3 is a cross-sectional schematic diagram of a high-pressure forward-inclined impeller according to an embodiment of the utility model;

[0040] Figure 4 yes Figure 3 The enlarged view of the Chinese part A mainly shows the rivet edge structure and the rivet head structure;

[0041] Figure 5 is a schematic diagram of a second wheel disc according to an embodiment of the utility model;

[0042] Figure 6 It is a schematic diagram of a blade member according to an embodiment of the utility model.

[0043] The reference numerals are: 100, first wheel disc; 110, mounting hole; 120, riveting edge structure; 130, rib pressing structure; 140, first slot;

[0044] 200, shaft disc; 210, rivet head structure;

[0045] 300, blade member; 310, first pin; 320, second pin;

[0046] 400, a second wheel disc; 410, a second slot. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0048] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0049] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0050] Example 1

[0051] This embodiment relates to a high-pressure forward-inclined impeller in the utility model.

[0052] like Figure 1 As shown, a high-pressure forward-inclined impeller for washing a car comprises a first wheel disc 100, a shaft disc 200, a plurality of blades 300 and a second wheel disc 400. The first wheel disc 100 is used to install parts; the shaft disc 200 is connected to the first wheel disc 100 by riveting, and the shaft disc 200 is located at the center of the first wheel disc 100 and is coaxially arranged with the first wheel disc 100, and the shaft disc 200 is used to connect with the output shaft of the motor; a plurality of blades 300 are arranged at the edge of the first wheel disc 100 and are arranged at intervals along the circumference of the first wheel disc 100, and the first end of the blade 300 is plug-connected with the first wheel disc 100; the second wheel disc 400 is arranged at the second end of the blade 300 and is plug-connected with the blade 300.

[0053] like Figure 2 and Figure 3 As shown, the first wheel disc member 100 is provided in a circular plate-shaped structure, and the first wheel disc member 100 can provide installation conditions for components such as the shaft disc member 200 and the blade member 300.

[0054] In some of the embodiments, the first wheel disc 100 includes but is not limited to a galvanized plate.

[0055] Furthermore, the first wheel disc 100 further includes a mounting hole 110. The mounting hole 110 is opened at the center of the first wheel disc 100 for mounting the shaft disc 200.

[0056] It should be noted that the mounting hole 110 is coaxially arranged with the first wheel disc member 100 , and the size of the mounting hole 110 can be set according to the size of the shaft disc member 200 , and no excessive restrictions are imposed herein.

[0057] Furthermore, the first wheel disc 100 further includes a rib structure 130. The rib structure 130 is integrally formed on the first wheel disc 100 and is arranged along the circumference of the first wheel disc 100 to increase the structural strength of the first wheel disc 100.

[0058] Specifically, the rib structure 130 is arranged in a concave structure, and the depth of the rib structure 130 is 1.0 mm to 1.5 mm; preferably, the depth of the rib structure 130 is 1.2 mm.

[0059] It should be noted that the rib structure 130 is die-cast on the first wheel disc 100 , and the size and shape of the rib structure 130 can be set according to actual strength requirements, and no excessive restrictions are made here.

[0060] Furthermore, the first wheel disc 100 further includes a plurality of first slots 140 , wherein the plurality of first slots 140 are integrally formed at the edge of the first wheel disc 100 , and the plurality of first slots 140 are spaced apart along the circumference of the first wheel disc 100 .

[0061] More specifically, the plurality of first slots 140 are arranged in a ring shape on the first wheel disc 100 , and the plurality of first slots 140 are arranged in two rings on the first wheel disc 100 .

[0062] It should be noted that the positions and numbers of the first slots 140 on the first wheel disc 100 can be set according to the number of the blades 300 and the installation angles of the blades 300 , and no excessive restrictions are imposed herein.

[0063] like Figure 3 As shown, the shaft disc component 200 is arranged in a hollow cylindrical structure, and the hollow hole of the shaft disc component 200 can allow the output shaft of the motor to extend into; in addition, there is a pin groove on the side wall of the hollow hole, and the pin groove can be embedded and matched with the pin key on the output shaft of the motor, thereby realizing the connection between the shaft disc component 200 and the output shaft of the motor.

[0064] In some of the embodiments, the shaft disc member 200 includes but is not limited to an alloy steel shaft.

[0065] like Figure 3 and Figure 4As shown, the first wheel disc 100 further includes a riveting edge structure 120. The riveting edge structure 120 is integrally formed at the side wall of the mounting hole 110 and is arranged around the circumference of the mounting hole 110 to provide riveting conditions for the first wheel disc 100 and the shaft disc 200.

[0066] Specifically, the riveted edge structure 120 is provided in a circular ring sheet shape, and the riveted edge structure 120 can facilitate the riveting connection between the first wheel disc component 100 and the shaft disc component 200 .

[0067] The shaft disc 200 further includes a rivet head structure 210 . The rivet head structure 210 is integrally formed at the edge of one end of the shaft disc 200 and is disposed around the circumference of the shaft disc 200 for being riveted to the rivet edge structure 120 .

[0068] Specifically, the rivet head structure 210 is arranged in a circular ring shape, and the cross section of the rivet head structure 210 is a semicircular structure. The mutual riveting of the rivet head structure 210 and the rivet edge structure 120 can realize the connection between the first wheel disk component 100 and the shaft disk component 200.

[0069] It should be noted that, compared with the existing bolt connection method, the riveted connection between the first wheel disc 100 and the shaft disc 200 can avoid the occurrence of bolt failure and increase the service life of the impeller.

[0070] like Figure 5 As shown, the second wheel disc member 400 is provided in a circular plate-shaped structure, and the second wheel disc member 400 is connected to the second ends of a plurality of blade members 300, thereby increasing the stability of the overall structure of the impeller.

[0071] In some of the embodiments, the second wheel disc 400 includes but is not limited to a galvanized plate.

[0072] Furthermore, the second wheel disc 400 further includes a plurality of second slots 410 , wherein the plurality of second slots 410 are integrally formed at the edge of the second wheel disc 400 , and the plurality of second slots 410 are spaced apart along the circumference of the second wheel disc 400 .

[0073] More specifically, the plurality of second slots 410 are arranged in a ring shape on the second wheel disc 400 , and the plurality of second slots 410 are arranged in two rings on the second wheel disc 400 .

[0074] It should be noted that the positions and numbers of the second slots 410 on the second wheel disc 400 can be set according to the number of the blades 300 and the installation angles of the blades 300 , and no excessive restrictions are imposed herein.

[0075] like Figure 6As shown, the blade member 300 is vertically arranged between the first wheel disc member 100 and the second wheel disc member 400, and the first end of the blade member 300 is connected to the first wheel disc member 100, and the second end of the blade member 300 is connected to the second wheel disc member 400; it should be noted that the first end and the second end of the blade member 300 are respectively the two ends in its length direction.

[0076] In some of the embodiments, the blade member 300 includes, but is not limited to, a galvanized blade.

[0077] It should be noted that the number of blade members 300 between the first wheel disc member 100 and the second wheel disc member 400 can be set according to actual needs, and no excessive restrictions are made here.

[0078] It should be noted that after the first pin 310 and the second pin 320 on the blade member 300 are inserted into the corresponding first slot 140 and the second slot 410, the blade member 300 is connected to the first wheel member 100 and the second wheel member 400 by bending and rolling the first pin 310 and the second pin 320.

[0079] Furthermore, the blade member 300 is an arc-shaped plate-like structure, and the arc angle of the blade member 300 is 50 degrees to 70 degrees; the angle between the blade member 300 and the edges of the first wheel disc member 100 and the second wheel disc member 400 is 30 degrees to 60 degrees.

[0080] Preferably, the arc angle of the blade member 300 is 60 degrees; the angle between the blade member 300 and the edges of the first wheel disc member 100 and the second wheel disc member 400 is 45 degrees.

[0081] It should be noted that the structural design of the blade member 300 can generate a high airflow intensity and a high wind speed, which greatly improves the air drying effect of the fan on the car and improves the working efficiency of the fan.

[0082] Furthermore, the blade member 300 further includes a first pin 310 and a second pin 320. The first pin 310 is integrally formed at the first end of the blade member 300, the first pin 310 is inserted into the corresponding first slot 140 and connected to the first wheel member 100 by bending; the second pin 320 is integrally formed at the second end of the blade member 300, the second pin 320 is inserted into the corresponding second slot 410 and connected to the second wheel member 400 by bending.

[0083] Specifically, the first pin 310 is arranged in a long sheet structure, and the gap between the bending part of the first pin 310 and the first slot 140 is 0.01mm-0.05mm; preferably, the gap between the bending part of the first pin 310 and the first slot 140 is 0.02mm.

[0084] In some of the embodiments, the first pin 310 includes but is not limited to a galvanized pin.

[0085] Specifically, the second pin 320 is arranged in a long sheet structure, and the gap between the bending part of the second pin 320 and the second slot 410 is 0.01mm-0.05mm; preferably, the gap between the bending part of the second pin 320 and the second slot 410 is 0.02mm.

[0086] In some of the embodiments, the second pin 320 includes but is not limited to a galvanized pin.

[0087] It should be noted that by controlling the gap between the bending part of the first pin 310 and the first slot 140, and the gap between the bending part of the second pin 320 and the second slot 410 to about 0.02 mm, the installation stability of the blade member 300 and the first wheel disc member 100 and the second wheel disc member 400 can be ensured; in addition, compared with the existing installation method of the blade member 300 by welding, the plug-in connection method can reduce the weight of the entire impeller by about 50%, which can not only reduce the difficulty of assembly, but also reduce production costs.

[0088] More specifically, the number of the first plug pins 310 and the second plug pins 320 on one blade member 300 is two respectively, and the first plug pin 310 and the second plug pin 320 are inserted into the corresponding first slot 140 and second slot 410 respectively.

[0089] In some of the embodiments, the number of the first pin 310 and the second pin 320 on a blade member 300 can be 1, 3, etc., that is, the number of the first pin 310 and the second pin 320 on a blade member 300 can be set according to the actual connection strength requirements, and no excessive restrictions are made here.

[0090] The advantage of this embodiment is that by connecting the blade member to the first wheel disc member and the second wheel disc member by means of a plug-in connection, the weight of the entire impeller can be reduced by about 50% compared to the existing installation method of the blade member by welding or the like, which not only reduces the difficulty of assembly but also reduces the production cost; in addition, by riveting the first wheel disc member and the shaft disc member together, bolt failure can be avoided compared to the existing bolt connection method, thereby increasing the service life of the impeller.

[0091] Example 2

[0092] This embodiment relates to the fan in the utility model.

[0093] A fan comprises a fan cover, a high-pressure forward-inclined impeller as described in Example 1, and a motor. The high-pressure forward-inclined impeller is arranged inside the fan cover; the motor is arranged at the back of the fan cover and connected to the high-pressure forward-inclined impeller to drive the high-pressure forward-inclined impeller to rotate.

[0094] Specifically, the fan cover includes a circumferential ring plate, an air inlet end ring plate arranged on the front side of the circumferential ring plate, a mounting back plate arranged on the back side of the circumferential ring plate, and an exhaust pipe arranged on the peripheral side of the circumferential ring plate.

[0095] In some of the embodiments, the fan cover shell is generally thin. If the mounting back plate of the fan cover is directly bolted to the motor, tearing or deformation may occur during long-term weak vibrations. In order to improve the connection reliability, this embodiment also includes a connecting plate, which is connected between the mounting back plate and the motor.

[0096] Specifically, the motor is fixedly mounted on the outer end of the mounting back plate, and the output shaft passes through the mounting back plate and extends into the inner cavity of the fan cover.

[0097] In some of the embodiments, in order to increase the working stability of the high-pressure forward impeller, the fan further includes a heating mechanism. The heating mechanism includes a bearing plate, a heating ring plate, a wind collecting tube and a plurality of electric heating rods. A rotation groove is provided in the middle area of ​​the bearing plate, and a through hole is provided in the middle area of ​​the rotation groove for passing an external drive shaft. In the present embodiment, the bearing plate is a circular plate-like structure. In another embodiment, the bearing plate is a rectangular plate-like structure. The rotation groove is adapted to the drive shaft, and the drive shaft is inserted in the rotation groove and is rotatably connected to the bearing plate. Each electric heating rod is arranged at the edge of the bearing plate. Further, in the present embodiment, each electric heating rod is evenly arranged at the edge of the bearing plate. The bearing plate is connected to the heating ring plate through each electric heating rod, and the input end of the wind collecting tube is connected to the side of the heating ring plate facing away from the bearing plate. In the present embodiment, the heating ring plate and the wind collecting tube are integrally formed to increase the structural stability of the heating mechanism. In another embodiment, the heating ring plate and the wind collecting tube are detachably connected.

[0098] The advantages of this embodiment are the same as those of Embodiment 1 and will not be described in detail here.

[0099] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A high-pressure forward-inclined impeller for car washing, characterized in that: include: A first wheel disc member, wherein the first wheel disc member is used for mounting components; A shaft disc component, the shaft disc component is connected to the first wheel disc component by riveting, and the shaft disc component is located at the center of the first wheel disc component and is coaxially arranged with the first wheel disc component, and the shaft disc component is used to be connected to the output shaft of the motor; A plurality of blade members, wherein the plurality of blade members are arranged at the edge of the first wheel disc member and are arranged at intervals along the circumference of the first wheel disc member, and the first ends of the blade members are plug-connected with the first wheel disc member; A second wheel disc member is disposed at the second end of the blade member and is plug-connected with the blade member.

2. The high-pressure forward-inclined impeller according to claim 1, characterized in that: The first wheel disc member also includes: A mounting hole is provided at the center of the first wheel disc component and is used for mounting the shaft disc component.

3. The high-pressure forward-inclined impeller according to claim 2, characterized in that: The first wheel disc member also includes: A riveting edge structure, which is integrally formed at the side wall of the mounting hole and is arranged around the circumference of the mounting hole to provide riveting conditions for the first wheel disc member and the shaft disc member; The shaft disc member also includes: A rivet head structure is integrally formed at the edge of one end of the shaft disc and is arranged around the circumference of the shaft disc to be riveted to the rivet edge structure.

4. The high-pressure forward-inclined impeller according to claim 1, characterized in that: The first wheel disc member also includes: A rib structure is integrally formed on the first wheel disc component and is arranged along the circumference of the first wheel disc component to increase the structural strength of the first wheel disc component.

5. The high-pressure forward-inclined impeller according to claim 1, characterized in that: The first wheel disc member also includes: A plurality of first slots, wherein the plurality of first slots are integrally formed at the edge of the first wheel disc, and the plurality of first slots are spaced apart along the circumference of the first wheel disc; The second wheel disc also includes: A plurality of second slots, wherein the plurality of second slots are integrally formed at the edge of the second wheel disc, and the plurality of second slots are spaced apart along the circumference of the second wheel disc; The blade member also includes: A first pin, the first pin being integrally formed at the first end of the blade member, the first pin being inserted into the corresponding first slot and connected to the first wheel member through bending; A second plug pin is integrally formed at the second end of the blade member, and the second plug pin is inserted into the corresponding second slot and connected to the second wheel member by bending.

6. The high-pressure forward-inclined impeller according to claim 5, characterized in that: The number of the first plug pin and the number of the second plug pin on one blade member are two respectively, and the first plug pin and the second plug pin are respectively inserted into the corresponding first slot and the second slot.

7. The high-pressure forward-inclined impeller according to claim 5, characterized in that: The gap between the bending part of the first pin and the first slot is 0.01 mm to 0.05 mm; the gap between the bending part of the second pin and the second slot is 0.01 mm to 0.05 mm.

8. The high-pressure forward-inclined impeller according to claim 1, characterized in that: The blade member is an arc-shaped plate-like structure, and the arc angle of the blade member is 50 degrees to 70 degrees; the angle between the blade member and the edges of the first wheel disc member and the second wheel disc member is 30 degrees to 60 degrees.

9. The high-pressure forward-inclined impeller according to claim 7, characterized in that: The arc angle of the blade member is 60 degrees; the angle between the blade member and the edges of the first wheel disc member and the second wheel disc member is 45 degrees.

10. A fan, characterized in that: include: Fan cover; The high-pressure forward-inclined impeller according to any one of claims 1 to 9, wherein the high-pressure forward-inclined impeller is arranged inside the fan cover; A motor is arranged at the back of the fan cover and connected to the high-pressure forward-inclined impeller to drive the high-pressure forward-inclined impeller to rotate.

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