A portable air purification device for cleanrooms

Abstract

This utility model relates to the field of air purification technology, specifically to a portable air purification device for cleanrooms. It includes an air purifier. In this utility model, when a servo motor drives a cross-shaped turntable to rotate, the turntable moves the hinged ends of each connecting rod. The other end of the connecting rod then pushes the corresponding translation frame to move horizontally along the guide rail away from the center of the air purifier. The translation frame drives the U-shaped frame to move horizontally synchronously. The movement of the U-shaped frame causes the slider on it to slide within a corresponding inclined groove. The inclined groove pushes the slider, along with the U-shaped frame, to move downwards while moving horizontally, causing the U-shaped frame and its bottom rubber pad to continuously descend. When the lower sidewall of the rubber pad contacts the ground, it locks the device position through friction with the ground. Simultaneously, the movement of the U-shaped frame moves the rubber pad out of the air purifier's projection range, increasing the contact area of ​​the device with the ground.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, and more specifically, to a portable air purification device for cleanrooms. Background Technology

[0002] A cleanroom is a special enclosed space that achieves extremely low pollution levels by strictly controlling environmental parameters such as air particle concentration, temperature, humidity, and air pressure. Its core purpose is to minimize pollutants such as dust, microorganisms, and aerosols in the air to meet the extremely high environmental cleanliness requirements of scenarios such as precision manufacturing (such as semiconductor chips and biopharmaceuticals), scientific experiments (such as microbial research and nanotechnology), or medical surgery.

[0003] To effectively maintain and improve air quality in cleanrooms and reduce pollutants such as dust, air purifiers are typically installed inside. For convenience and flexibility, these air purifiers are mostly commercially available and mature products, and are generally equipped with casters at the bottom for easy movement. However, this design presents a double challenge in actual operation: First, once the air purifier is moved to the designated position, it needs to be secured. Although the casters are usually equipped with brakes, and operators can lock the brakes to prevent the wheels from rolling, since a single device often has multiple (usually four) casters, operators must bend over and operate each one individually to lock the brakes on each wheel. This process is not only cumbersome, increasing the operator's workload and time cost, but also inefficient in scenarios where frequent position adjustments are required.

[0004] Secondly, and more importantly, even with all the casters locked, the contact area between the air purifier and the ground is still very limited. This small contact point support structure makes the physical stability of the entire air purifier inherently insufficient. The device is prone to shaking or even displacement due to slight collisions, uneven ground, or its own operating vibrations. This potential instability, in the cleanroom environment that requires extreme stability and precision, can not only easily affect the operating efficiency of the air purifier itself, but also bring unexpected risks, which runs counter to the high stability and controllable environment pursued by cleanrooms. Utility Model Content

[0005] The purpose of this invention is to provide a portable air purification device for cleanrooms, in order to solve the problems mentioned in the background art. Air purifiers are supported on the ground only by the small contact points of the casters. When subjected to slight impacts, uneven ground, or vibrations during operation, they are prone to shaking or even displacement.

[0006] To address the above problems, the present invention aims to provide a portable air purification device for cleanrooms, comprising an air purifier. Universal wheels are rotatably connected to the lower sidewall of the air purifier near its four corners. Four guide rails are fixedly mounted in a circular array on the lower sidewall of the air purifier. A translation frame is slidably mounted on the lower sidewall of each guide rail. A U-shaped frame is vertically slidably connected to the translation frame. A lifting assembly is mounted on the U-shaped frame. An expansion mechanism is provided between the four translation frames. The expansion mechanism drives the four translation frames to move synchronously along their respective guide rails towards or away from the center of the air purifier. When the translation frames are fully retracted below the air purifier, the lower sidewall of the U-shaped frame is higher than the bottom of the universal wheels, keeping the universal wheels in contact with the ground while the U-shaped frame remains suspended. When the expansion mechanism drives the four translation frames to move synchronously outward, causing the end of the U-shaped frame to move out of the projection range of the air purifier, the U-shaped frame moves vertically downward under the action of the lifting assembly.

[0007] As a further improvement to this technical solution, a rubber pad is fixedly connected to the lower side wall of the U-shaped frame. When the U-shaped frame moves vertically downward under the action of the lifting assembly, the lower side wall of the rubber pad contacts the ground.

[0008] As a further improvement to this technical solution, the expansion mechanism includes a servo motor embedded and fixed at the bottom of the air purifier, and a cross turntable is coaxially fixedly connected to the lower end of the output shaft of the servo motor.

[0009] As a further improvement to this technical solution, each of the four ends of the cross turntable is hinged with a connecting rod, and the other end of each of the four connecting rods is respectively hinged to the middle position of the four translation frames near the end of the air purifier.

[0010] As a further improvement to this technical solution, protrusions are fixedly connected to both sides of the translation frame near the two ends. The protrusions are vertically arranged, and grooves are opened on the inner wall of the U-shaped frame at the positions corresponding to each protrusion. The protrusions are slidably arranged inside the corresponding grooves.

[0011] As a further improvement to this technical solution, the lifting assembly includes sliders fixedly disposed on both sides of the U-shaped frame near the middle of the air purifier. Positioning plates are fixedly installed on both sides of the U-shaped frame on the lower side wall of the air purifier. An inclined groove is opened on the positioning plate at the position corresponding to the slider, and the slider is slidably disposed in the corresponding inclined groove.

[0012] As a further improvement to this technical solution, the end of the inclined groove near the middle of the air purifier is higher, and the end of the inclined groove away from the middle of the air purifier is lower. When the slider moves to the lower end of the inclined groove, the lower sidewall of the rubber pad contacts the ground.

[0013] As a further improvement to this technical solution, all four translation frames are located between two adjacent casters.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This cleanroom uses a portable air purification device. When the servo motor drives the cross-shaped turntable to rotate, the cross-shaped turntable drives the hinged ends of each connecting rod to move. The other end of the connecting rod then pushes the corresponding translation frame to move horizontally along the guide rail away from the center of the air purifier. The translation frame drives the U-shaped frame to move horizontally in sync. The movement of the U-shaped frame causes the slider on it to slide in the corresponding inclined groove. The inclined groove pushes the slider and the U-shaped frame to move downwards while moving horizontally, so that the U-shaped frame and the rubber pad at its bottom continue to descend. When the lower side wall of the rubber pad contacts the ground, it locks the device position through the friction between the device and the ground, avoiding safety hazards caused by changes in the device's position. At the same time, the movement of the U-shaped frame moves the rubber pad out of the projection range of the air purifier. The rubber pad's contact with the ground increases the contact area of ​​the device, improving the stability of the device when placed on the ground. Attached Figure Description

[0015] Figure 1 This is one of the overall structural schematic diagrams of this utility model; Figure 2 This is the second schematic diagram of the overall structure of this utility model; Figure 3 This is one of the partial structural schematic diagrams of this utility model; Figure 4 This is the second partial structural schematic diagram of the present utility model; Figure 5 This is a schematic diagram of the translation frame and expansion mechanism of this utility model; Figure 6 This is a schematic diagram of the lifting assembly, translation frame, and expansion mechanism of this utility model; Figure 7 This is a schematic diagram of the U-shaped frame of this utility model.

[0016] The meanings of the labels in the diagram are as follows: 1. Air purifier; 11. Casters; 12. Guide rail; 2. Translation frame; 21. Protrusion; 3. U-shaped frame; 31. Rubber pad; 32. Slider; 33. Groove; 4. Positioning plate; 41. Inclined groove; 5. Expansion mechanism; 51. Servo motor; 52. Cross turntable; 53. Connecting rod. Detailed Implementation

[0017] 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.

[0018] Example 1 Please see Figure 1 As shown, the purpose of this embodiment is to provide a portable air purification device for cleanrooms, including an air purifier 1. The air purifier 1 is a commercially available mature product, and its working principle will not be described in detail here. Universal wheels 11 are rotatably connected to the lower side wall of the air purifier 1 near the four corners. When in use, the universal wheels 11 contact the ground, making it easy to move the device.

[0019] Reference Figures 2-4 Four guide rails 12 are fixedly installed in a ring array on the lower side wall of the air purifier 1. A translation frame 2 is slidably arranged on the lower side wall of the guide rail 12. The four translation frames 2 are all located between two adjacent universal wheels 11 to avoid the universal wheels 11 from blocking the normal movement of the translation frame 2. A U-shaped frame 3 is vertically slidably connected to the translation frame 2. A rubber pad 31 is fixedly connected to the lower side wall of the U-shaped frame 3. A lifting component is provided on the U-shaped frame 3. An expansion mechanism 5 is provided between the four translation frames 2. The expansion mechanism 5 is used to drive the four translation frames 2 to move synchronously along their respective guide rails 12 in a direction away from or close to the center of the air purifier 1.

[0020] When the sliding frame 2 is fully retracted under the air purifier 1, the lower side walls of the U-shaped frame 3 and the rubber pad 31 are higher than the bottom of the caster wheel 11, so that the caster wheel 11 remains in contact with the ground while the U-shaped frame 3 and the rubber pad 31 remain suspended in the air. At this time, the caster wheel 11 can be used normally.

[0021] When the user moves the device to the predetermined position, the expansion mechanism 5 drives the four translation frames 2 to move outward synchronously, so that the end of the U-shaped frame 3 moves out of the projection range of the air purifier 1. At this time, the U-shaped frame 3 moves vertically downward under the action of the lifting component until the lower side wall of the rubber pad 31 contacts the ground. The rubber pad 31 prevents the device from moving by friction with the ground, avoiding safety hazards caused by changes in the position of the device. At the same time, the U-shaped frame 3 moves the rubber pad 31 out of the projection range of the air purifier 1. After the rubber pad 31 contacts the ground, the contact area of ​​the device increases, improving the stability of the device placed on the ground.

[0022] The structure of expansion mechanism 5 is described in detail below, with reference to... Figure 5The expansion mechanism 5 includes a servo motor 51 embedded and fixed at the bottom of the air purifier 1. The lower end of the output shaft of the servo motor 51 is coaxially fixed to a cross turntable 52. Each of the four ends of the cross turntable 52 is hinged with a connecting rod 53. The other ends of the four connecting rods 53 are respectively hinged to the middle position of the four translation frames 2 near the end of the air purifier 1.

[0023] It should be noted that the servo motor 51 is electrically connected to the air purifier 1. When the air purifier 1 is connected to an external power source, the servo motor 51 is simultaneously powered on. At the same time, the control panel of the air purifier 1 can control the operation of the servo motor 51.

[0024] Both sides of the translation frame 2 are fixedly connected with protrusions 21 near the ends. The protrusions 21 are vertically arranged. The inner wall of the U-shaped frame 3 is provided with grooves 33 corresponding to each protrusion 21. The protrusions 21 are slidably arranged in the corresponding grooves 33. The cooperation between the protrusions 21 and the grooves 33 restricts the relative movement between the U-shaped frame 3 and the translation frame 2 to only occur in the vertical direction.

[0025] The following details the structure of the lifting assembly, please refer to... Figure 6 and Figure 7 The lifting assembly includes sliders 32 fixedly installed on both sides of the U-shaped frame 3 near the middle of the air purifier 1. Positioning plates 4 are fixedly installed on the lower side wall of the air purifier 1 on both sides of the U-shaped frame 3. An inclined groove 41 is opened on the positioning plate 4 at the position corresponding to the slider 32. The slider 32 is slidably installed in the corresponding inclined groove 41. The end of the inclined groove 41 near the middle of the air purifier 1 is higher, and the end of the inclined groove 41 away from the middle of the air purifier 1 is lower.

[0026] When the translation frame 2 is fully retracted under the air purifier 1, the angle between the connecting rod 53 and the cross disc 52 is an acute angle. At this time, the slider 32 is located at the higher end inside the inclined groove 41. After the servo motor 51 is started, its output shaft drives the cross disc 52 to rotate. The rotation angle of the output shaft of the servo motor 51 is controlled within the range of 0° to 180°. This angle range precisely matches the stroke requirements of the translation frame 2, ensuring that the rubber pad 31 fully descends to contact the ground while avoiding damage to the cross disc 52 and the connecting rod 53 due to excessive rotation. The rotating cross disc 52 pushes one end of the connecting rod 53, and the connecting rod 53, pushed by the cross disc 52, pushes one end of the translation frame 2. At this time, the translation frame 2 is pushed and moves. During the movement of the translation frame 2, the connecting rod 53 moves with the translation frame 2. During this process, the angle between the connecting rod 53 and the cross turntable 52 continues to increase. The translation frame 2 moves horizontally along the guide rail 12 in a direction away from the center of the air purifier 1. The moving translation frame 2 drives the U-shaped frame 3 to move horizontally in sync. The movement of the U-shaped frame 3 causes the slider 32 on it to slide in the corresponding inclined groove 41. Since the inclined groove 41 is inclined downward from the inside (near the center) to the outside (away from the center), during the movement of the slider 32, the inner wall of the inclined groove 41 applies a force to the slider 32, causing the slider 32 and the U-shaped frame 3 to move downward while moving horizontally. This linkage process causes the U-shaped frame 3 and the rubber pad 31 at its bottom to continue to descend. When the slider 32 moves to the lower end of the inclined groove 41, the lower side wall of the rubber pad 31 contacts the ground, thereby improving the stability of the device when placed on the ground.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable air purification device for cleanrooms, comprising an air purifier (1), wherein casters (11) are rotatably connected to the lower side wall of the air purifier (1) near the four corners, characterized in that: The air purifier (1) has four guide rails (12) fixedly mounted in a ring array on its lower side wall. A translation frame (2) is slidably arranged on the lower side wall of the guide rails (12). A U-shaped frame (3) is vertically slidably connected to the translation frame (2). A lifting component is arranged on the U-shaped frame (3). An expansion mechanism (5) is arranged between the four translation frames (2). The expansion mechanism (5) is used to drive the four translation frames (2) to move synchronously along their respective guide rails (12) away from or towards the air purifier (1). When the translation frame (2) is completely retracted under the air purifier (1), the lower side wall of the U-shaped frame (3) is higher than the bottom of the caster wheel (11), so that the caster wheel (11) remains in contact with the ground while the U-shaped frame (3) remains suspended. When the expansion mechanism (5) drives the four translation frames (2) to move outward synchronously, so that the end of the U-shaped frame (3) moves out of the projection range of the air purifier (1), the U-shaped frame (3) moves vertically downward under the action of the lifting component.

2. The clean room air purification device of claim 1, wherein: A rubber pad (31) is fixedly connected to the lower side wall of the U-shaped frame (3). When the U-shaped frame (3) moves vertically downward under the action of the lifting assembly, the lower side wall of the rubber pad (31) contacts the ground.

3. The clean room air purification device of claim 1, wherein: The expansion mechanism (5) includes a servo motor (51) embedded and fixed at the bottom of the air purifier (1), and a cross turntable (52) is coaxially fixedly connected to the lower end of the output shaft of the servo motor (51).

4. The clean room air purification device of claim 3, wherein: The four ends of the cross turntable (52) are all hinged with connecting rods (53), and the other ends of the four connecting rods (53) are respectively hinged to the middle position of the four translation frames (2) near the end of the air purifier (1).

5. The clean room air purification device of claim 1, wherein: The translation frame (2) has protrusions (21) fixedly connected to both sides near the two ends. The protrusions (21) are arranged vertically. The inner wall of the U-shaped frame (3) has grooves (33) at the positions corresponding to each protrusion (21). The protrusions (21) are slidably arranged inside the corresponding grooves (33).

6. The clean room air purification device of claim 2, wherein: The lifting assembly includes sliders (32) fixedly installed on both sides of the U-shaped frame (3) near the middle of the air purifier (1). Both sides of the U-shaped frame (3) are provided with positioning plates (4) fixedly installed on the lower side wall of the air purifier (1). An inclined groove (41) is opened on the positioning plate (4) at the position corresponding to the slider (32). The slider (32) is slidably installed in the corresponding inclined groove (41).

7. The clean room air purification device of claim 6, wherein: The inclined groove (41) is higher at the end near the middle of the air purifier (1) and lower at the end away from the middle of the air purifier (1). When the slider (32) moves to the lower end of the inclined groove (41), the lower side wall of the rubber pad (31) contacts the ground.

8. The clean room air purification device of claim 1, wherein: All four translation frames (2) are located between two adjacent casters (11).

Images