A machine head and cooling fan

Abstract

The present invention discloses a machine head and a cooling fan, wherein the machine head includes a shell with an air duct, the air inlet and the air outlet of the air duct are respectively arranged on the opposite side walls of the shell, and a wet curtain assembly and a fan assembly are arranged in the air duct along the air flow direction, and the wet curtain assembly is hinged on the inner wall of the shell, and when the shell shakes up and down, the wet curtain assembly swings in the vertical plane relative to the shell under the action of gravity. In the machine head described in the present invention, the wet curtain assembly is hinged in the shell through a horizontal hinge shaft, and during the shaking of the machine head, the wet curtain assembly, under the action of its own weight, ensures that the inclination angle of the wet curtain assembly relative to the vertical direction is small, effectively preventing water leakage and improving the cooling effect; when the machine head shakes its head, the wet curtain bracket contacts the limit block on the rear shell, effectively preventing the wet curtain bracket from directly contacting the rear shell and causing a collision.

Description

Technical Field

[0001] The invention relates to the technical field of cooling fans, and in particular to a machine head and a cooling fan. Background Art

[0002] The cooling fan uses the evaporation of water to absorb heat and blow out cold air. The wet curtain is an important component of the cooling fan. It can increase the contact area and time between water and air, allowing the water to absorb heat and evaporate, effectively cooling down. Usually, the wet curtain is set on the wet curtain bracket, which is fixed to the fan rear shell or grille, and the wet curtain rotates with the fan shaking.

[0003] With the widespread use of cooling fans, circulating fans came into being. In addition to shaking left and right, circulating fans can also shake up and down. When the circulating fan shakes up and down, if the wet curtain is always fixed to the fan head, the wet curtain will have an inclination relative to the vertical direction. If the inclination is too large, the vertical downward water flow will leak out of the wet curtain, and the wet curtain cannot fully absorb water, and the cooling effect is greatly reduced. Summary of the invention

[0004] In order to solve the technical problem mentioned in the background technology that when the circulating fan shakes up and down, the wet curtain is fixed in the machine head and leaks. The present invention provides a machine head and a cooling fan, and the wet curtain assembly is hinged in the shell through a horizontal hinge shaft, so as to ensure that the inclination angle of the wet curtain assembly relative to the vertical direction is small, effectively preventing water leakage and improving the cooling effect.

[0005] To achieve the above purpose, the specific technical solution of a head and a cooling fan of the present invention is as follows:

[0006] A machine head comprises a shell with an air duct, wherein the air inlet and the air outlet of the air duct are respectively arranged on opposite side walls of the shell, and a wet curtain assembly and a fan assembly are arranged in the air duct along the air flow direction. The wet curtain assembly is hinged on the inner wall of the shell, and when the shell shakes up and down, the wet curtain assembly swings in a vertical plane relative to the shell under the action of gravity.

[0007] Furthermore, the wet curtain assembly includes a wet curtain body and a wet curtain bracket. The wet curtain body is fixed in the wet curtain bracket. A support bracket is provided on the top surface of the inner wall of the shell. A connecting frame is provided on the top wall of the wet curtain bracket. The wet curtain bracket is hinged to the support frame through a hinge shaft.

[0008] Furthermore, a limiting member is provided on the inner wall of the shell, and the limiting member contacts the bottom end of the wet curtain bracket. The limiting member includes two limiting members, and the two limiting members are respectively arranged on the inner wall of the shell opposite to the bottom corner of the wet curtain bracket.

[0009] Furthermore, the limiting member is a limiting block made of elastic material, or the limiting member is a spring, one end of the spring is fixed to the inner wall of the shell, and the other end of the spring is a free end.

[0010] Furthermore, it also includes a guide member, which is arranged on the side wall of the wet curtain bracket, and a guide rail used in conjunction with the guide member is arranged on the inner wall of the shell, and the guide member slides smoothly along the guide rail.

[0011] Furthermore, the guide member includes a connecting rod, and both ends of the connecting rod are rotatably connected to a support seat and a swing seat, the support seat is arranged on the side wall of the wet curtain bracket, and the swing seat is slidably connected to the guide rail.

[0012] Furthermore, the support seat and the connecting rod are respectively provided with spherical grooves and spheres that cooperate with each other, and the connecting rod and the support seat form a universal joint.

[0013] Furthermore, the connecting rod and the swing seat are respectively provided with a sphere and a spherical groove that cooperate with each other, and the connecting rod and the swing seat form a universal joint.

[0014] Furthermore, a guide rod is arranged on the swing seat, an arc-shaped hole is arranged on the guide rail, and the end of the guide rod is inserted into the arc-shaped hole and moves along the arc-shaped hole.

[0015] Furthermore, the connecting rod is a telescopic sleeve.

[0016] Furthermore, the shell includes a front shell and a rear shell that are fixed together. The front shell is cylindrical, and an air outlet grille is arranged at the end of the front shell. The axis line of the front shell is distributed in a horizontal direction. The rear shell is hemispherical and opens toward the front shell. The rear shell is provided with an air inlet of the air duct.

[0017] Furthermore, the fan assembly is arranged between the wet curtain assembly and the air outlet grille, and the fan assembly includes a motor and a fan blade fixed to the motor drive shaft, the motor is fixed to the motor bracket, the motor bracket is fixed to the opening of the rear shell, a buckle is provided on the support frame facing the direction of the motor bracket, and a buckle hole that cooperates with the buckle is provided on the motor bracket.

[0018] A cooling fan comprises a machine base and the above-mentioned machine head. The machine base is provided with an oscillating head assembly, and the machine head is fixed on the oscillating head assembly.

[0019] A machine head and a cooling fan of the present invention have the following advantages:

[0020] In the machine head described in the present invention, the wet curtain assembly is hinged in the shell through a horizontal hinge shaft. During the movement of the machine head, the wet curtain assembly, under the action of its own weight, ensures that the inclination angle of the wet curtain assembly relative to the vertical direction is small, effectively preventing water leakage and improving the cooling effect; when the machine head shakes its head, the wet curtain bracket contacts the limit block on the rear shell, effectively preventing the wet curtain bracket from directly contacting the rear shell and causing a collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the cooling fan of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the present invention when the machine head moves to a first state;

[0023] Figure 3 It is a structural schematic diagram of the present invention when the machine head moves to the second state;

[0024] Figure 4 It is a cross-sectional view of the machine head of the present invention.

[0025] Explanation of the numbers in the figure: 1. front shell; 11. air outlet grille; 2. rear shell; 21. guide rail; 3. support frame; 4. wet curtain assembly; 41. wet curtain body; 42. wet curtain bracket; 43. connecting frame; 5. fan assembly; 51. motor; 52. fan blade; 53. motor bracket; 6. hinge shaft; 7. guide member; 71. support seat; 72. connecting rod; 73. swing seat; 8. limit block. DETAILED DESCRIPTION

[0026] In order to better understand the purpose, structure and function of the present invention, a head and a cooling fan of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 1 As shown, the head of the present invention includes a housing with an air duct, the air inlet and the air outlet of the air duct are respectively arranged on the opposite side walls of the housing, and a wet curtain assembly 4 and a fan assembly 5 are arranged in the air duct along the air flow direction. The wet curtain assembly 4 is hinged on the inner wall of the housing, and when the housing shakes up and down, the wet curtain assembly 4 swings relative to the housing in the vertical plane under the action of gravity. This ensures that the wet curtain has a small inclination angle relative to the vertical direction, effectively prevents water leakage, and improves the cooling effect.

[0028] The shell body includes a front shell 1 and a rear shell 2 which are fixed together. The front shell 1 is cylindrical, and an air outlet grille 11 is arranged at the end of the front shell 1. The axis of the front shell 1 is horizontally distributed. The rear shell 2 is hemispherical and opens toward the front shell 1. The rear shell 2 is provided with an air inlet of the air duct.

[0029] The wet curtain assembly 4 is a key component of the cooling fan. Usually, the wet curtain assembly 4 includes a wet curtain body 41 and a wet curtain bracket 42. The wet curtain body 41 is fixed in the wet curtain bracket 42. In order to make the wet curtain assembly 4 hinged in the shell, a support frame 3 is provided on the top surface of the inner wall of the rear shell 2, and a connecting frame 43 is provided on the top wall of the wet curtain bracket 42. Mounting holes are respectively provided on the connecting frame 43 and the support frame 3. A hinge shaft 6 is inserted in the mounting hole, so that the wet curtain bracket 42 is hinged on the support frame 3. The hinge shaft 6 is arranged in the horizontal direction to ensure that when the shell shakes up and down in the vertical plane, the wet curtain assembly 4 is in a vertical state or has a small inclination angle with the vertical direction under the action of gravity, so that the wet curtain body 41 can fully absorb moisture and be fully soaked, thereby improving the cooling effect.

[0030] like Figure 2-Figure 3As shown, in the process of the housing shaking up and down, since the wet curtain assembly 4 has a certain thickness and the space of the rear shell 2 is limited, when the wet curtain assembly 4 rotates around the hinge shaft 6, the bottom end of the wet curtain assembly 4 may collide with the rear shell 2, so a limiter is provided on the inner wall of the rear shell 2, and the limiter contacts the bottom end of the wet curtain bracket 42, effectively preventing the wet curtain assembly 4 from hitting the rear shell 2 and causing damage. Preferably, the limiter includes two limiters, and the two limiters are respectively arranged on the inner wall of the rear shell 2 opposite to the bottom corners of the wet curtain bracket 42.

[0031] The stopper may be a stopper block 8 made of elastic materials such as rubber and plastic, or a spring, one end of which is fixed to the inner wall of the rear shell 2 and the other end of which is a free end. The stopper is made of elastic material or spring, which is convenient for shock absorption during the contact between the wet curtain assembly 4 and the rear shell 2, and reduces the impact force of the wet curtain assembly 4 on the rear shell 2, thereby improving the stability of the system.

[0032] In order to further enhance the stability of the wet curtain assembly 4, the machine head also includes a guide member 7, which is arranged on the side wall of the wet curtain bracket 42, and a guide rail 21 used in conjunction with the guide member 7 is arranged on the inner wall of the rear shell 2, and the guide member 7 slides smoothly along the guide rail 21.

[0033] like Figure 4 As shown, the guide member 7 includes a support seat 71 and a connecting rod 72 rotatably connected to the support seat 71. The support seat 71 is arranged on the side wall of the wet curtain bracket 42. A spherical groove is provided on the support seat 71. A sphere that cooperates with the spherical groove is provided at the end of the connecting rod 72, so that the connecting rod 72 and the support seat 71 form a universal joint to achieve a rotational connection between the two.

[0034] The other end of the connecting rod 72 is rotatably connected to a swing seat 73. The end of the connecting rod 72 and the swing seat 73 are respectively provided with a sphere and a spherical groove that cooperate with each other, and the two are rotatably connected. A guide rod is provided on the swing seat 73, and an arc hole is provided on the guide rail 21. The end of the guide rod is inserted into the arc hole and moves along the arc hole, thereby limiting the swing angle of the wet curtain assembly 4 relative to the shell, and effectively preventing the wet curtain assembly 4 from hitting the rear shell 2 or the fan assembly 5.

[0035] During the swinging of the wet curtain assembly 4 relative to the housing, the distance between the wet curtain bracket 42 and the rear housing 2 may change, so the connecting rod 72 is a telescopic sleeve.

[0036] The fan assembly 5 is arranged between the wet curtain assembly 4 and the air outlet grille 11. The fan assembly 5 includes a motor 51 and a fan blade 52 fixed to the driving shaft of the motor 51. The motor 51 is fixed to a motor bracket 53, and the motor bracket 53 is fixed to the opening of the rear shell 2. In the process of the housing shaking, the strength of the support frame 3 is required to be high. In order to improve the strength of the support frame 3, as shown in FIG. Figure 3As shown, a buckle is provided on the support frame 3 facing the motor bracket 53 , and a clamping hole matching with the buckle is provided on the motor bracket 53 . The buckle is clamped and fixed in the buckle, thereby improving the strength of the support frame 3 .

[0037] When the machine head moves up and down within the range of 0°-15°, the wet curtain assembly 4 rotates around the hinge shaft 6, and the guide rod moves along the arc hole. The wet curtain assembly 4 remains in a vertical state under the action of its own weight, so that the water flow can completely flow through the wet curtain body 41 to maintain the cooling effect. Figure 2 The machine head is in the first state, and the angle between the axis of the machine head and the horizontal direction is 15°; when the machine head moves up and down within the range of 15°-45°, the wet curtain bracket 42 contacts the limit block 8, and the wet curtain assembly 4 rotates together with the machine head, and the wet curtain assembly 4 has a certain inclination angle with the vertical direction, so that the water flow can fully flow through and soak the wet curtain body 41 as much as possible. Figure 3 The middle machine head is in the second state, and the angle between the axis of the machine head and the horizontal direction is 45°.

[0038] The present application also provides a cooling fan, including a base and the above-mentioned head, the base is provided with an oscillating head assembly, and the head is fixed on the oscillating head assembly.

[0039] The wet curtain assembly 4 of the machine head is hinged in the shell through a horizontal hinge shaft 6. When the machine head shakes its head, the wet curtain assembly 4, under the action of its own weight, ensures that the inclination angle of the wet curtain assembly 4 relative to the vertical direction is small, effectively preventing water leakage and improving the cooling effect; when the machine head shakes its head, the wet curtain bracket 42 contacts the limit block 8 on the rear shell 2, effectively preventing the wet curtain bracket 42 from directly contacting the rear shell 2 and causing a collision.

[0040] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A machine head, comprising a housing with an air duct, wherein an air inlet and an air outlet of the air duct are respectively arranged on opposite side walls of the housing, and a wet curtain assembly (4) and a fan assembly (5) are arranged in the air duct along the air flow direction, characterized in that: The wet curtain assembly (4) is hinged on the inner wall of the shell, and when the shell shakes up and down, the wet curtain assembly (4) swings relative to the shell in a vertical plane under the action of gravity.

2. The head according to claim 1, characterized in that: The wet curtain assembly (4) comprises a wet curtain body (41) and a wet curtain bracket (42); the wet curtain body (41) is fixed in the wet curtain bracket (42); a support bracket (3) is provided on the top surface of the inner wall of the shell; a connecting bracket (43) is provided on the top wall of the wet curtain bracket (42); and the wet curtain bracket (42) is hinged to the support bracket (3) via a hinge shaft (6).

3. The head according to claim 2, characterized in that: The inner wall of the shell is provided with a limiter, which contacts the bottom end of the wet curtain bracket (42). The limiter includes two limiters, which are respectively arranged on the inner wall of the shell opposite to the bottom corners of the wet curtain bracket (42).

4. The head according to claim 3, characterized in that: The limiting member is a limiting block (8) made of elastic material, or the limiting member is a spring, one end of the spring is fixed on the inner wall of the shell, and the other end of the spring is a free end.

5. The handpiece according to claim 2, characterized in that: The housing also comprises a guide member (7), wherein the guide member (7) is arranged on the side wall of the wet curtain bracket (42), and a guide rail (21) used in conjunction with the guide member (7) is arranged on the inner wall of the housing, and the guide member (7) slides smoothly along the guide rail (21).

6. The handpiece according to claim 5, characterized in that: The guide member (7) comprises a connecting rod (72), and the two ends of the connecting rod (72) are rotatably connected to a support seat (71) and a swing seat (73), respectively. The support seat (71) is arranged on the side wall of the wet curtain bracket (42), and the swing seat (73) is slidably connected to the guide rail (21).

7. The handpiece according to claim 6, characterized in that: The support seat (71) and the connecting rod (72) are respectively provided with spherical grooves and spheres that match each other, and the connecting rod (72) and the support seat (71) form a universal joint.

8. The handpiece according to claim 6, characterized in that: The connecting rod (72) and the swing seat (73) are respectively provided with a sphere and a spherical groove which cooperate with each other, and the connecting rod (72) and the swing seat (73) form a universal joint.

9. The handpiece according to claim 6, characterized in that: A guide rod is arranged on the swing seat (73), an arc hole is arranged on the guide rail (21), and the end of the guide rod is inserted into the arc hole and moves along the arc hole.

10. The handpiece according to claim 6, characterized in that: The connecting rod (72) is a telescopic sleeve.

11. The handpiece according to claim 2, characterized in that: The shell comprises a front shell (1) and a rear shell (2) which are fixedly connected by clamping, the front shell (1) is cylindrical, an air outlet grille (11) is arranged at the end of the front shell (1), the axis of the front shell (1) is distributed in the horizontal direction, the rear shell (2) is in the shape of a hemispherical surface opening toward the front shell (1), and an air inlet of the air duct is arranged on the rear shell (2).

12. The handpiece according to claim 11, characterized in that: The fan assembly (5) is arranged between the wet curtain assembly (4) and the air outlet grille (11), and comprises a motor (51) and a fan blade (52) fixed to a drive shaft of the motor (51); the motor (51) is fixed to a motor bracket (53), the motor bracket (53) is fixed to an opening of the rear shell (2), a buckle is provided on the support frame (3) facing the motor bracket (53), and a buckle hole matched with the buckle is provided on the motor bracket (53).

13. A cooling fan, characterized in that: It comprises a machine base and a machine head as described in any one of claims 1 to 12, wherein an oscillating head assembly is arranged on the machine base, and the machine head is fixed on the oscillating head assembly.

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