Maintenance-free wet film type fogless humidifier

Abstract

The application relates to a maintenance-free wet film type fog-free humidifier which effectively solves the problems of small wet film effective area and laying area and inconvenient water supply; the technical scheme is that the humidifier comprises an outer shell body, a water storage tank below the outer shell body and an evaporator above the outer shell body, a fan is arranged on the left side of the evaporator, and an air outlet corresponding to an air outlet channel is arranged on the top of the outer shell body; the evaporator comprises a rotatable horizontal shaft, the horizontal shaft is sleeved with inner and outer multilayer conical filter cylinders; there is a gap between the two adjacent conical filter cylinders, the left end of the conical filter cylinder is large, and the right end is small; a layer of wet film is laid on the outer side of each layer of the conical filter cylinder; a plurality of water absorbing cottons are connected between the two adjacent layers of the wet film; the outer side of the conical filter cylinder is provided with a ring-shaped filter cylinder, a plurality of water absorbing curtains are uniformly distributed on the outer edge surface of the ring-shaped filter cylinder; a press roller located directly above the ring-shaped filter cylinder is arranged in the outer shell body, and the wet film is arranged in the inner and outer multilayer conical cylinder mode, so that the laying area and the effective evaporation area of the wet film are improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a maintenance-free wet film type mist-free humidifier. Background Technology

[0002] Humidifiers are used in many industries, such as textiles, papermaking, electronics, mobile phone batteries, spraying, plastics, gunpowder, printing, laboratories, tobacco, HVAC, food preservation, food, agriculture, animal husbandry, and artificial landscaping.

[0003] The principle of a wet film humidifier is as follows: when dry air passes through the wet film material, water molecules absorb heat from the air and vaporize, increasing the humidity and creating humid air. It uses natural evaporation for humidification and has the significant advantages of being adaptable to various water qualities and producing no mist, making it more widely used currently. The evaporation rate of a wet film humidifier is directly related to the evaporation area, airflow velocity, and temperature.

[0004] Traditional wet-film humidifiers typically place the lower part of the wet-film material in water, relying on capillary action to saturate the material. Examples include patent documents CN104848458A (an air purifier) ​​and CN116697485A (a humidification device and humidification filter). However, this method suffers from a slow capillary absorption rate, and the upper part of the wet-film material often fails to absorb water. Building on this, some humidifiers now use pumps for water supply, such as patent document CN116007097A (a mist-free humidifier with a simple mist-producing structure). This method uses a circulating pump to wet the wet curtain, but the pump requires continuous operation, resulting in significant noise, especially when water is scarce. Furthermore, the pump has a high failure rate, and pipe leaks are common.

[0005] Another type of patent literature uses a rotating wet film method, such as CN114777268A, a humidifying roller for an air purifier. This method uses a circular wet film, which is fully saturated by placing a portion of it in water and rotating it. This method eliminates the need for a pump, relying instead on a low-speed, quiet motor. However, in this method, a portion of the wet film remains constantly submerged in water, preventing it from being effectively evaporated by the fan. This limitation becomes more pronounced as the water level rises, reducing the effective working area of ​​the wet film. Furthermore, this method typically only allows for a single wet film, limiting the area that can be covered.

[0006] In addition, there are differences among various humidifiers in terms of water filling methods and automatic water replenishment. Currently, a new type of humidifier is needed to solve the above problems. Summary of the Invention

[0007] In view of the above situation and to solve the problems existing in the prior art, the purpose of this invention is to provide a maintenance-free wet film type mist-free humidifier, which can effectively solve the problems of small effective area and laying area of ​​wet film and inconvenient water supply.

[0008] The technical solution includes an outer shell, inside which is a partition. Below the partition is a water storage tank, and above the partition is a vertically placed evaporator. A fan is located on the left side of the evaporator. An air inlet is located on the left side of the outer shell, and a filter is installed at the air inlet. An air outlet is located on the right side of the evaporator, and an air outlet corresponding to the air outlet is located on the top of the outer shell.

[0009] The evaporator includes a rotatable horizontal shaft, around which are fitted multiple layers of inner and outer conical filter cylinders; there is a gap between adjacent layers of conical filter cylinders, with the left end of the conical filter cylinder being larger than the right end; a wet film is laid on the outer side of each layer of conical filter cylinder; multiple absorbent cotton strands are connected between adjacent layers of wet film; an annular filter cylinder is fitted on the outer side of the outermost conical filter cylinder, and multiple absorbent curtains are evenly distributed around the circumference of the outer edge of the annular filter cylinder; a clearance groove is provided on the partition plate, and the absorbent curtains can pass through the clearance groove and be placed in the water storage tank after rotating to the bottom; a pressure roller is provided inside the outer shell, located directly above the annular filter cylinder.

[0010] The advantages of this invention are as follows: 1. By using a multi-layered conical cylindrical layout of the wet film 403 material inside and outside, the laying area of ​​the wet film 403 and the air flow rate are effectively increased. At the same time, the wet film 403 material does not need to be immersed in water and evaporates as a whole, thereby increasing the effective evaporation area.

[0011] 2. By installing a high-efficiency water-absorbing curtain 406 on the outer layer and multiple water-absorbing cotton 404 between adjacent layers, water is supplied by an overall rolling method, which can fully wet all layers without the need for a pump, making it more efficient and quieter.

[0012] 3. The air outlet duct 8 can also be used with water added directly from the top, resulting in a more streamlined structure, top air outlet, and high circulation efficiency. Top water addition makes it convenient to use.

[0013] 4. The air inlet 6 is equipped with filter cotton 7, which effectively directs workshop dust onto the wet membrane 403 material, improving its lifespan and enabling long-term maintenance-free operation.

[0014] 5. Automatic water replenishment can be achieved through auxiliary water tank 13 or by direct connection to tap water pipes, enabling long-term operation. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention.

[0016] Figure 2 This is a front cross-sectional view of the present invention.

[0017] Figure 3 This is a left-side cross-sectional view of the present invention.

[0018] Figure 4 for Figure 2 A magnified view of a portion of point A in the middle.

[0019] Figure 5 This is a three-dimensional schematic diagram of evaporator 4.

[0020] In the diagram: 1. Outer shell; 2. Partition plate; 3. Water tank; 4. Evaporator; 5. Fan; 6. Air inlet; 7. Filter cotton; 8. Air outlet channel; 9. Water inlet pipe; 10. One-way water inlet valve; 11. Float valve; 12. Auxiliary water tank; 13. Horizontal shaft; 401. Conical filter cartridge; 402. Wet film; 403. Water-absorbing cotton; 404. Annular filter cartridge; 405. Water-absorbing curtain; 406. Relief groove; 407. Pressure roller; 408. Motor; 409. Slider; 410. Slide groove; 411. Compression spring; 412. Counterweight rod; 413. Implementation

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Depend on Figures 1 to 5 The present invention includes an outer shell 1, a partition 2 inside the outer shell 1, a water storage tank 3 below the partition 2, a vertically placed evaporator 4 above the partition 2, a fan 5 on the left side of the evaporator 4, an air inlet 6 on the left side of the outer shell 1, and a filter cotton 7 installed at the air inlet 6; an air outlet 8 on the right side of the evaporator 4, and an air outlet 9 corresponding to the air outlet 8 on the top of the outer shell 1.

[0023] The evaporator 4 includes a rotatable horizontal shaft 401, around which multiple layers of conical filter cylinders 402 are fitted. There is a gap between adjacent layers of conical filter cylinders 402, with the left end of the conical filter cylinder 402 being larger than the right end. A wet film 403 is laid on the outer side of each layer of conical filter cylinder 402. Multiple absorbent cotton strands 404 are connected between adjacent layers of wet film 403. An annular filter cylinder 405 is fitted on the outer side of the outermost conical filter cylinder 402, and multiple absorbent curtains 406 are evenly distributed around the outer edge of the annular filter cylinder 405. A clearance groove 407 is provided on the partition plate 2, and the absorbent curtains 406 can pass through the clearance groove 407 and be placed in the water storage tank 3 after rotating to the bottom. A pressure roller 408 is provided inside the outer shell 1, located directly above the annular filter cylinder 405.

[0024] To enable the installation and rotation of the horizontal shaft 401, the right end of the horizontal shaft 401 is driven to rotate by a motor 409, which is fixed to the inner wall of the outer casing 1, and a waterproof shell is provided on the outer side of the motor 409; a bearing is fitted on the left end of the horizontal shaft 401, and the outer side of the bearing is fixed to the outer casing 1 by multiple connecting rods.

[0025] To achieve automatic water replenishment, the bottom of the water storage tank 3 is provided with a water inlet pipe 10, the middle of the water inlet pipe 10 is provided with a one-way water inlet valve 11, the left end of the water inlet pipe 10 is connected to a vertical pipe, the upper end of the vertical pipe is connected to a float valve 12, and the right end of the water inlet pipe 10 is connected to an auxiliary water tank 13.

[0026] In order to achieve the pressing of the pressure roller 408, sliders 410 are provided at both the left and right ends of the pressure roller 408, and two vertical grooves 411 corresponding to the sliders 410 are provided inside the outer shell 1. Compression springs 412 are provided in both the left and right grooves 411.

[0027] In order for the water absorption curtain 406 to be rotated to the bottom and placed in the water storage tank 3, a counterweight rod 413 is provided at the end of the water absorption curtain 406 away from the annular filter cylinder 405.

[0028] In order to install the multi-layer conical filter cartridge 402 and the arc-shaped filter cartridge, multiple mounting rods are evenly distributed around the left and right ends of the horizontal shaft 401. The mounting rods are provided with grooves corresponding to the conical filter cartridge 402, and the ends of the conical filter cartridge 402 are placed in the grooves. The annular filter cartridge 405 is fixedly connected to the mounting rods by bolts.

[0029] To achieve intelligent humidification, a humidity sensor is installed at the air inlet 6, and both the motor 409 and the fan 5 are controlled by a controller. Once the set humidity is reached, the controller stops the motor 409 and the fan 5 from operating.

[0030] For ease of maintenance and installation, the outer casing 1 is provided with a door on the front side.

[0031] In this invention, the air outlet channel 8 can both supply air and add water. Therefore, before or during use, water can be added directly through the air outlet 9, flowing through the air outlet channel 8 and finally into the water storage tank 3 via the clearance groove 407. Simultaneously, this invention can also connect an auxiliary water tank 13 to the right end of the water inlet pipe 10, or directly connect the right end of the water inlet pipe 10 to a tap water source; then, with the combined action of the one-way water inlet valve 11 and the float valve 12, the water level in the water storage tank 3 can be maintained, achieving automatic water replenishment and maintenance-free operation.

[0032] After connecting the power supply to the fan 5 and motor 409, the fan 5 will draw air from the left side and blow it towards the evaporator 4. Since the evaporator 4 has multiple inner and outer conical filter cartridges 402, a wet film 403 is attached to the outside of the conical filter cartridges 402 by means of nails, glue, or Velcro. When the air blows from left to right onto the wet film 403, it can accelerate the evaporation of the wet film 403. The dry airflow will mix with water vapor to form humid air, which will eventually be dispersed upward through the air outlet 8 and the air outlet 9.

[0033] Because the wet membrane 403 is cone-shaped with a larger diameter at the left end and a smaller diameter at the right end, the airflow has a certain angle and resistance when passing through the wet membrane 403, which increases the probability of the airflow penetrating the wet membrane 403 and allows the moisture on the wet membrane 403 to evaporate more quickly. Compared with the traditional method where the airflow direction is parallel to the wet curtain, this method can improve the effect of airflow penetrating the wet curtain, increase the humidification of the airflow, and improve the evaporation efficiency. Compared with the traditional method where the airflow direction is perpendicular to the wet curtain, this method can achieve multi-layer layout and increase the layout area of ​​the wet curtain.

[0034] As the motor 409 rotates, taking clockwise rotation as an example, the water-absorbing curtain 406 on the right side gradually descends and passes through the clearance groove 407 into the water storage tank 3. Because each water-absorbing curtain 406 has a counterweight rod 413 at its lower end, it remains vertical when placed in the water storage tank 3, ensuring that the lower end of the water-absorbing curtain 406 is almost in contact with the bottom of the water storage tank 3. Once inside the water storage tank 3, the water-absorbing curtain 406 is filled with water. It then continues to rotate, turning upwards and to the right, and adheres to the outside of the annular filter cartridge 405. When the water-absorbing curtain 406 reaches the top, the pressure roller 408 presses against its outer side, squeezing out the water. The squeezed water falls onto the outermost wet membrane 403.

[0035] Because absorbent cotton 404 connects the multiple layers of wet film 403, moisture on the outermost wet film 403 is transferred to the remaining layers of wet film 403 through capillary action via the absorbent cotton 404. Since the moisture on the outermost wet film 403 is in a super-dampened state, it also drips into the inner layers, accelerating the wetting of the inner layers. Ultimately, each layer of wet film 403 absorbs moisture, and the moisture content increases sequentially from the inside to the outside of the multiple layers. Each layer continuously and rapidly evaporates under the action of the fan 5, and moisture is continuously replenished.

[0036] In conjunction with the controller, when the humidity sensor at the air inlet 6 detects the humidity at the set value, the fan 5 and motor 409 will stop working, and the humidifier will stop working accordingly; when the humidity drops, it will automatically start working again.

[0037] Because it uses the wet film 403 humidification principle, there are no strict requirements for water quality; traditional tap water can be used. Furthermore, the presence of filter cotton 7 at the air inlet 6 prevents debris from entering the evaporator 4, thus extending its lifespan. After a period of time, a descaling agent can be added to the water storage tank 3 to remove calcium deposits from the evaporator 4, improving its evaporation efficiency.

[0038] In this device, the entire evaporator 4 is above the water surface, allowing for comprehensive evaporation; this avoids the need for the lower part of the evaporator 4 to be submerged in water, which reduces the effective evaporation area of ​​the evaporator 4 in traditional methods.

[0039] In this device, water is absorbed and squeezed through a water absorption curtain 406. The water absorption curtain 406 is made of a material with a high water absorption rate. Through the overall rotation of the evaporator 4, multiple water absorption curtains 406 can alternately absorb and squeeze water by using the pressure roller 408. No pump is required, making it quieter, more efficient, and easier to maintain. At the same time, the high water absorption rate can completely absorb the water in the water storage tank 3, saving space and piping layout.

[0040] The key feature of this device is that the multi-layered wet film 403 is set in a conical shape and nested inside and outside. On the one hand, it can make the wet film 403 and the airflow at a certain angle, so that the airflow can better penetrate the wet film 403 and improve the evaporation efficiency. On the other hand, after the internal and external multi-layer layout, the coverage area of ​​the wet film 403 can be increased many times in the effective space, and the humidification capacity can be increased many times.

[0041] In this device, by placing absorbent cotton 404 between the multiple wet films 403, the water absorption capacity of the inner wet film 403 can be improved, allowing the moisture in the outer layer to be quickly transferred to the inner layer through the capillary effect of the absorbent cotton 404; thus avoiding the problem that the moisture in the inner wet film 403 cannot be replenished in time.

Claims

1. A maintenance-free wet-film type mist-free humidifier, comprising an outer shell (1), a partition (2) inside the outer shell (1), and a water storage tank (3) below the partition (2), characterized in that, An evaporator (4) is placed vertically above the partition (2). A fan (5) is located on the left side of the evaporator (4). An air inlet (6) is located on the left side of the outer casing (1). A filter cotton (7) is installed at the air inlet (6). An air outlet channel (8) is located on the right side of the evaporator (4). An air outlet (9) corresponding to the air outlet channel (8) is located above the outer casing (1). The evaporator (4) includes a rotatable horizontal shaft (401), and multiple conical filter cylinders (402) are fitted around the horizontal shaft (401); there is a gap between two adjacent conical filter cylinders (402), and the left end of the conical filter cylinder (402) is larger than the right end; a wet film (403) is laid on the outside of each conical filter cylinder (402); multiple absorbent cotton (404) is connected between two adjacent wet films (403); an annular filter cylinder (405) is fitted around the outermost conical filter cylinder (402), and multiple absorbent curtains (406) are evenly distributed around the outer edge of the annular filter cylinder (405); a clearance groove (407) is provided on the partition plate (2), and the absorbent curtain (406) can pass through the clearance groove (407) and be placed in the water storage tank (3) after rotating to the bottom; a pressure roller (408) is provided inside the outer shell (1) and located directly above the annular filter cylinder (405).

2. The maintenance-free wet film type mist-free humidifier according to claim 1, characterized in that, The right end of the horizontal shaft (401) is driven to rotate by a motor (409). The motor (409) is fixed on the inner wall of the outer shell (1), and a waterproof shell is provided on the outer side of the motor (409). The left end of the horizontal shaft (401) is fitted with a bearing, and the outer side of the bearing is fixed to the outer shell (1) by multiple connecting rods.

3. The maintenance-free wet film type mist-free humidifier according to claim 1, characterized in that, The water storage tank (3) is provided with a water inlet pipe (10) at the bottom, a one-way water inlet valve (11) in the middle of the water inlet pipe (10), a vertical pipe connected to the left end of the water inlet pipe (10), and a float valve (12) connected to the upper end of the vertical pipe; an auxiliary water tank (13) is connected to the right end of the water inlet pipe (10).

4. A maintenance-free wet film type mist-free humidifier according to claim 1, characterized in that, The pressure roller (408) is provided with sliders (410) at both ends. The outer shell (1) is provided with two vertical grooves (411) corresponding to the sliders (410). Each of the two grooves (411) is provided with a compression spring (412).

5. A maintenance-free wet film type mist-free humidifier according to claim 1, characterized in that, The water-absorbing curtain (406) is provided with a counterweight rod (413) at the end away from the annular filter cylinder (405).

6. A maintenance-free wet film type mist-free humidifier according to claim 1, characterized in that, The horizontal shaft (401) has multiple mounting rods evenly distributed around its left and right ends. The mounting rods have grooves corresponding to the conical filter cylinder (402), and the end of the conical filter cylinder (402) is placed in the groove. The annular filter cylinder (405) is fixedly connected to the mounting rods by bolts.

7. A maintenance-free wet film type mist-free humidifier according to claim 1, characterized in that, A humidity sensor is installed at the air inlet (6), and the motor (409) and the fan (5) are both controlled by the controller.

8. A maintenance-free wet film type mist-free humidifier according to claim 1, characterized in that, The outer shell (1) is provided with a door on the front side.

Images