An evaporative humidifier

Abstract

This application discloses an evaporative humidifier, including a main unit housing and a water tank. The main unit housing and the water tank are combined to form an air duct. A centrifugal fan is installed inside the main unit housing, and a filter screen is installed inside the air duct outside the main unit housing. The centrifugal fan includes a fan assembly and an air duct housing. The fan assembly includes a fan wheel and a motor. The fan wheel has a recessed mounting groove in its middle. A motor shaft is fixedly installed at the center of the mounting groove. The motor is embedded in the mounting groove. One side of the motor is connected to the motor shaft, and the other side of the motor is connected to the air duct housing. This utility model provides an evaporative humidifier that can reduce product size and save product costs.

Description

Technical Field

[0001] This utility model relates to the field of humidification equipment technology, and more specifically to an evaporative humidifier. Background Technology

[0002] Evaporative humidifiers typically increase the liquid surface area and airflow above the humidifier by using a fan and filter to promote water evaporation and achieve humidification. However, most existing evaporative humidifiers on the market use motor-driven axial fan blades with the filter placed below the fan blades, allowing air to enter from the bottom and exit from the top. Because the motor and filter occupy a significant amount of space, the product is relatively large. Some evaporative humidifiers use a separate structure for the motor and fan blades, such as the cooling fan disclosed in Chinese patent number CN208779613U, which has an upper and lower fan cover, with the motor mounted on the lower cover. This separate structure results in higher energy consumption, a larger motor footprint, and a still relatively large overall product size. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, this utility model provides an evaporative humidifier that can reduce product size and save product costs.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an evaporative humidifier, including a main unit shell and a water tank, the main unit shell and the water tank are combined to form an air duct, a centrifugal fan is provided inside the main unit shell, and a filter screen is provided in the air duct outside the main unit shell.

[0005] The centrifugal fan includes a fan assembly and a duct housing. The fan assembly includes a fan wheel and a motor. The fan wheel has a recessed mounting groove in the middle. A motor shaft is fixed at the center of the mounting groove. The motor is embedded in the mounting groove. One side of the motor is connected to the motor shaft, and the other side of the motor is connected to the duct housing.

[0006] This technical solution provides an evaporative humidifier that uses an integrated centrifugal fan. By embedding the motor into the mounting slot of the impeller, the impeller encloses the motor, and the fan assembly is integrated with the air duct housing. This reduces the space occupied by the motor, thereby reducing the product size and saving product costs. At the same time, the motor shaft connects the impeller and the motor, and the motor directly drives the impeller to rotate, which can also improve the motor's operating efficiency, improve the humidification efficiency, reduce product energy consumption, and provide better humidification effect.

[0007] In a preferred embodiment, the evaporative humidifier further includes a base, with the main unit housing and water tank both fixed on the base. The base has a water trough that communicates with the water tank, and a filter screen is inserted into the water trough.

[0008] In this technology, the main unit housing and water tank of the evaporative humidifier are both located on the base, which is simple in structure and easy to assemble. At the same time, since the centrifugal fan occupies little space, the size of the main unit housing can be reduced, making the overall size of the product smaller.

[0009] In a preferred embodiment, the bottom of the water tank is connected to the water trough via a drain valve, which facilitates control of water addition to the trough.

[0010] In a preferred embodiment, the water tank has a handle on the side near the main housing, with an air inlet at the top of the handle; the main housing has an air outlet at the top, and ventilation holes on the side of the main housing near the filter. Dry air enters the air duct through the air inlet at the top of the water tank's handle, passes through the filter and ventilation holes into the main housing, and is then discharged to the outside through the air outlet at the top of the main housing, thus achieving top air intake and top air exhaust.

[0011] In a preferred embodiment, the filter screen is located between the main unit housing and the water tank, and the filter screen is in close contact with the outer wall of the main unit housing. This ensures that when the centrifugal motor in the air duct is running, the airflow passes through the air inlet and effectively through the filter screen, thereby increasing the humidification capacity.

[0012] In a preferred technical solution, the top surface of the water tank, the top surface of the handle, and the top surface of the main unit casing are on the same horizontal plane, making the overall shape of the evaporative humidifier square and neat.

[0013] In a preferred embodiment, a boss is provided at the center of the bottom of the mounting groove, and the motor shaft is fixedly connected to the center of the boss. In this technology, the motor shaft is fixedly connected to the center of the boss at the bottom of the mounting groove, resulting in a more stable and secure connection.

[0014] In a preferred embodiment, the motor includes, from the inside out, a bearing, a motor bracket, a coil, a magnetic frame, and a housing, all sequentially mounted on the motor shaft. The motor bracket includes a mounting tube mounted on the bearing and a mounting plate located on one side of the mounting tube. The motor is connected to the duct housing via the mounting plate. This technology features a simple motor structure and convenient assembly due to its connection to the duct housing via the mounting plate of the motor bracket.

[0015] In a preferred embodiment, the motor also includes an oil baffle ring, which is fitted onto the motor shaft between the bearing and the boss. The oil baffle ring can prevent dust, impurities, etc. from entering the bearing and can also prevent lubricating oil from leaking out, thus providing a sealing effect.

[0016] In a preferred embodiment, a snap fastener is provided on the end of the motor shaft that extends through the bearing to prevent the motor shaft from detaching from the bearing.

[0017] As can be seen from the above technical solution, compared with the prior art, the beneficial effects of this utility model are as follows: The evaporative humidifier provided by this utility model adopts an integrated centrifugal fan. By embedding the motor into the mounting groove of the impeller, the impeller wraps around the motor, and the fan assembly and the air duct shell are integrated into one piece, which can compress and reduce the space occupied by the motor, thereby reducing the product size and saving product costs. At the same time, the motor shaft connects the impeller and the motor, and the motor directly drives the impeller to rotate, which can also improve the motor operating efficiency, improve the humidification efficiency, reduce product energy consumption, and achieve better humidification effect.

[0018] In addition, other advantages of this invention will be set forth in the description which follows, in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a cross-sectional view of the evaporative humidifier of this utility model;

[0021] Figure 2 This is a schematic diagram of the centrifugal fan of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the fan assembly of this utility model;

[0023] Figure 4 This is an exploded structural diagram of the fan assembly of this utility model;

[0024] Figure 5 This is a cross-sectional view of the fan assembly of this utility model;

[0025] Figure 6 This is an exploded view of the centrifugal fan of this utility model;

[0026] Explanation of reference numerals in the attached drawings: 1. Main unit housing; 2. Water tank; 3. Centrifugal fan; 4. Filter screen; 5. Base; 11. Air outlet; 21. Air inlet; 30. Fan assembly; 31. Impeller; 311. Mounting slot; 312. Motor shaft; 32. Motor; 321. Housing; 322. Oil baffle ring; 323. Magnetic frame; 324. Coil; 325. Bearing; 326. Buckle; 327. Motor bracket; 33. Air duct housing. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] Reference Figure 1-6 This invention describes an evaporative humidifier according to an embodiment of the present invention.

[0030] In one embodiment, such as Figure 1-6 As shown, an evaporative humidifier includes a main housing 1 and a water tank 2. The main housing 1 and the water tank 2 are combined to form an air duct. A centrifugal fan 3 is provided inside the main housing 1, and a filter screen 4 is provided in the air duct outside the main housing 1. The centrifugal fan 3 includes a fan assembly 30 and an air duct housing 33. The fan assembly 30 includes a fan wheel 31 and a motor 32. The fan wheel 31 has a recessed mounting groove 311 in the middle. A motor shaft 312 is fixedly provided at the center of the mounting groove 311. The motor 32 is embedded in the mounting groove 311. One side of the motor 32 is connected to the motor shaft 312, and the other side of the motor 32 is connected to the air duct housing 33.

[0031] The water tank 2 is used to supply water to the filter screen 4. The filter screen 4 absorbs water and remains moist, thus playing a humidifying role. The main unit housing 1 and the outer shell of the water tank 2 are combined to form an air duct. The outer shell of the water tank 2 is provided with an air inlet 21 and the main unit housing 1 is provided with an air outlet 11. The air duct is the channel through which airflow flows from the air inlet 21 to the air outlet 11. The filter screen 4 is provided in the air duct outside the main unit housing 1, and the centrifugal fan 3 is provided in the air duct inside the main unit housing 1.

[0032] In practice, the evaporative humidifier places the motor 32 in the mounting groove 311 in the middle of the impeller 31, so that the motor 32 is completely embedded in the impeller 31, thereby effectively reducing the thickness of the fan assembly 30, making the centrifugal fan 3 occupy less space, and thus reducing the product size of the evaporative humidifier and saving product costs.

[0033] This embodiment provides an evaporative humidifier that uses an integrated centrifugal fan. By embedding the motor 32 into the mounting groove 311 of the impeller 31, the impeller 31 encloses the motor 32, and the fan assembly 30 is integrated with the air duct housing 33. This reduces the space occupied by the motor 32, thereby reducing the product size and saving product costs. At the same time, the motor shaft 312 connects the impeller 31 and the motor 32, and the motor 32 directly drives the impeller 31 to rotate, which can also improve the operating efficiency of the motor 32, improve the humidification efficiency, reduce product energy consumption, and achieve better humidification effect.

[0034] In this embodiment, a base 5 is also included. The main unit housing 1 and the water tank 2 are both fixed on the base 5. The base 5 is provided with a water tank that communicates with the water tank 2, and the filter screen 4 is inserted into the water tank.

[0035] The evaporative humidifier consists of a main unit housing 1 on one side and a water tank 2 on the other. The main unit housing 1 and the water tank 2 are combined to form an air duct. Both the main unit housing 1 and the water tank 2 of the evaporative humidifier are located on the base 5, which is simple in structure and easy to assemble. At the same time, because the centrifugal fan 3 occupies little space, the size of the main unit housing 1 can be reduced, making the overall size of the product smaller.

[0036] In this embodiment, the bottom of the water tank 2 is connected to the water trough via a drain valve, which facilitates the control of water addition to the water trough.

[0037] In practice, the filter screen 4 is fixedly installed in the water tank. Water from the water tank 2 flows into the water tank under the control of the drain valve. The filter screen 4 automatically absorbs water and remains moist. The centrifugal fan 3 inside the main unit housing 1 works to draw air outwards. Dry air enters the air duct through the air inlet 21, passes through the moist filter screen 4 to obtain moist air, and is then output to the outside through the air outlet 11 on the main unit housing 1.

[0038] In this embodiment, the water tank 2 is provided with a handle on the side near the main housing 1, and an air inlet 21 is provided at the top of the handle; the top of the main housing 1 is provided with an air outlet 11, and a ventilation hole is provided on the side of the main housing 1 near the filter screen 4.

[0039] In practice, dry air enters the air duct through the air inlet 21 at the top of the handle of the water tank 2, passes through the filter 4 and the vent hole into the main unit housing 1, and is then discharged to the outside through the air outlet 11 at the top of the main unit housing 1, thus achieving air intake and exhaust from the top.

[0040] In this embodiment, the filter 4 is located between the main housing 1 and the water tank 2, and the filter 4 is attached to the outer wall of the main housing 1. This ensures that when the centrifugal motor 3 in the air duct is running, the airflow passes through the air inlet 21 and effectively through the filter 4, thereby increasing the humidification capacity.

[0041] In this embodiment, the top surface of the water tank 2, the top surface of the handle, and the top surface of the main unit housing 1 are on the same horizontal plane, making the overall shape of the evaporative humidifier square and neat.

[0042] In this embodiment, a boss is provided at the center of the bottom of the mounting groove 311, and the motor shaft 312 is fixedly connected to the center of the boss. In specific implementation, the motor shaft 312 is inserted into the center of the boss, making the connection between the motor shaft 312 and the impeller 31 more stable and secure.

[0043] In this embodiment, the motor 32 includes a bearing 325, a motor bracket 327, a coil 324, a magnetic frame 323, and a housing 321, which are sequentially sleeved on the motor shaft 312 from the inside to the outside. The motor bracket 327 includes a mounting tube sleeved on the bearing 325 and a mounting plate located on one side of the mounting tube. The motor 32 is connected to the air duct housing 33 through the mounting plate. The structure is simple and easy to assemble.

[0044] In this embodiment, the motor 32 also includes an oil baffle ring 322, which is sleeved on the motor shaft 312 between the bearing 325 and the boss. It can prevent dust, impurities and other contaminants from entering the bearing 325 and can also prevent lubricating oil from leaking out, thus having a sealing effect.

[0045] In this embodiment, a buckle 326 is provided on one end of the motor shaft 312 that extends through the bearing 325, which can prevent the motor shaft 312 from detaching from the bearing 325.

[0046] In a specific implementation, the buckle 326 can be an annular piece. The side wall of the end of the motor shaft 312 that extends through the bearing 325 is provided with an annular groove. The buckle 326 is engaged in the annular groove, and the outer peripheral surface of the buckle 326 protrudes from the outer peripheral surface of the motor shaft 312.

[0047] Other components and operations of the evaporative humidifier according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In the description of this specification, references to the terms "embodiment," "specific embodiment," "example," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example that is included in at least one embodiment or example of the present invention.

[0050] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined with each other in any suitable manner in one or more embodiments or examples without interference or contradiction.

Claims

1. An evaporative humidifier, characterized in that: It includes a main unit housing (1) and a water tank (2). The main unit housing (1) and the water tank (2) are combined to form an air duct. A centrifugal fan (3) is provided inside the main unit housing (1). A filter screen (4) is provided in the air duct outside the main unit housing (1). The centrifugal fan (3) includes a fan assembly (30) and a duct housing (33). The fan assembly (30) includes a fan wheel (31) and a motor (32). The fan wheel (31) has a recessed mounting groove (311) in the middle. A motor shaft (312) is fixedly installed at the center of the mounting groove (311). The motor (32) is embedded in the mounting groove (311). One side of the motor (32) is connected to the motor shaft (312), and the other side of the motor (32) is connected to the duct housing (33).

2. The evaporative humidifier according to claim 1, characterized in that: It also includes a base (5), the main unit housing (1) and the water tank (2) are both fixed on the base (5), the base (5) is provided with a water tank that communicates with the water tank (2), and the filter screen (4) is inserted into the water tank.

3. An evaporative humidifier according to claim 2, characterized in that: The bottom of the water tank (2) is connected to the water trough via a drain valve.

4. An evaporative humidifier according to claim 2, characterized in that: The water tank (2) has a handle on the side near the main housing (1), and an air inlet (21) is provided at the top of the handle; the main housing (1) has an air outlet (11) at the top, and a ventilation hole is provided on the side of the main housing (1) near the filter (4).

5. An evaporative humidifier according to claim 4, characterized in that: The filter screen (4) is located between the main housing (1) and the water tank (2), and the filter screen (4) is attached to the outer wall of the main housing (1).

6. An evaporative humidifier according to claim 4, characterized in that: The top surface of the water tank (2), the top surface of the handle, and the top surface of the main body shell (1) are on the same horizontal plane.

7. An evaporative humidifier according to any one of claims 1 to 6, characterized in that: A boss is provided at the center of the bottom of the mounting groove (311), and the motor shaft (312) is fixedly connected to the center of the boss.

8. An evaporative humidifier according to claim 7, characterized in that: The motor (32) includes a bearing (325), a motor bracket (327), a coil (324), a magnetic frame (323), and a housing (321) sequentially mounted on the motor shaft (312) from the inside out. The motor bracket (327) includes a mounting tube mounted on the bearing (325) and a mounting plate located on one side of the mounting tube. The motor (32) is connected to the air duct housing (33) through the mounting plate.

9. An evaporative humidifier according to claim 8, characterized in that: The motor (32) also includes an oil baffle (322), which is sleeved on the motor shaft (312) between the bearing (325) and the boss.

10. An evaporative humidifier according to claim 9, characterized in that: The motor shaft (312) has a buckle (326) on one end that extends through the bearing (325).

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