Wind power automatic adjusting type laboratory medicine cabinet

Abstract

This utility model relates to the field of laboratory medicine cabinet technology, and discloses a laboratory medicine cabinet with automatic wind power adjustment. It includes a cabinet body, a storage cabinet on the right side, and a control cabinet on the left side. A front door panel is hinged to the front of the storage cabinet, and a limit switch is fixedly installed above the storage cabinet. An air suction device is installed on the storage cabinet behind the drawers. The air suction device includes suction pipes, with multiple suction pipes located behind each drawer and fixed to the storage cabinet. Filter holes are distributed on the side of the suction pipes facing the drawers. A main suction pipe is connected to the left side of the multiple suction pipes. The bottom end of the main suction pipe is closed, and the top end is connected to the air inlet of a centrifugal fan. The main suction pipe and the centrifugal fan are fixedly installed inside the control cabinet. The centrifugal fan of this utility model can automatically increase and decrease its speed according to the opening and closing of the door, removing harmful gases disturbed when the door is opened, preventing leakage, maintaining a stable slight negative pressure inside the cabinet when the door is closed, and reducing energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of laboratory medicine cabinet technology, and in particular to a wind-driven, automatically adjustable laboratory medicine cabinet. Background Technology

[0002] Laboratory reagent cabinets are essential equipment for the safe storage of various chemical reagents and medicines. Their core function is to prevent the leakage of harmful gases and protect the health of laboratory personnel and the safety of the laboratory environment. To ensure that volatile or harmful gases inside the cabinet do not escape into the laboratory environment and to maintain a suitable environment inside the cabinet, an effective ventilation system is usually required. When the cabinet door of a traditional reagent cabinet is opened, the airflow inside the cabinet is disturbed by external factors, which can easily cause harmful gases to diffuse out of the cabinet. Existing ventilation systems have a slow response and cannot quickly remove disturbed harmful gases, increasing the risk of inhalation for operators. The fan speed is mostly set to a constant speed. Strong ventilation is required when the door is open to quickly remove hazards, but high speed is not needed under normal circumstances. The fixed speed leads to excessive energy consumption. At the same time, there is a lack of adaptive adjustment for different states of opening and closing, making it impossible to balance ventilation effect and energy consumption reduction. Utility Model Content

[0003] The purpose of this utility model is to provide a wind-driven, automatically adjustable laboratory medicine cabinet that offers automatic wind adjustment, precise ventilation, and effective prevention of gas leakage, thereby improving safety and reducing energy consumption in storage.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An automatically adjustable wind-driven laboratory medicine cabinet includes a cabinet body. A storage cabinet is located on the right side of the cabinet body, and a control cabinet is located on the left side. A controller is installed inside the control cabinet. A front door panel is hinged to the front of the storage cabinet. Electromagnetic locks are fixedly installed at the top and bottom of the storage cabinet. Iron blocks are fixedly installed at positions corresponding to the electromagnetic locks on the front door panel. A limit switch is also fixedly installed above the storage cabinet. Multiple drawers are installed inside the storage cabinet. An air suction device is installed on the storage cabinet behind each drawer. The air suction device includes suction pipes, filter holes, a main suction pipe, and a centrifugal fan. Multiple suction pipes are located behind each drawer and fixed to the storage cabinet. Filter holes are distributed on the side of the suction pipes facing the drawers. A main suction pipe is connected to the left side of the multiple suction pipes. The bottom end of the main suction pipe is closed, and the top end is connected to the air inlet of the centrifugal fan. The main suction pipe and the centrifugal fan are fixedly installed inside the control cabinet.

[0005] Preferably, the storage cabinet is also equipped with an air supply device, which includes an air supply pipe, an air outlet slot, a main air supply pipe, a three-way solenoid valve, and an air outlet pipe. Multiple air supply pipes are located above the front side of each drawer and are fixed to the storage cabinet. A strip-shaped air outlet slot is opened below each air supply pipe. A main air supply pipe is connected to the left side of the multiple air supply pipes. The bottom end of the main air supply pipe is closed, and the top end is connected to one end of the three-way solenoid valve. The other two ends of the three-way solenoid valve are connected to the air outlet of the centrifugal fan and the air outlet pipe, respectively.

[0006] Preferably, a solenoid valve is installed at the connection point between each of the air intake pipes and the main air intake pipe, and a solenoid valve is also installed at the connection point between each of the supplementary air pipes and the main supplementary air pipe.

[0007] Preferably, the control cabinet is divided into an equipment compartment and a control compartment, with the centrifugal fan and three-way solenoid valve fixedly installed in the equipment compartment, and the controller installed on the mounting plate in the control compartment. A fingerprint lock and a display screen are installed on the front side of the control compartment.

[0008] Preferably, the control cabinet is hinged to a rear door panel, and the rear door panel is provided with heat dissipation louvers.

[0009] Preferably, a glass window is fixedly installed in the middle of the front door panel.

[0010] Preferably, the cabinet is equipped with casters at the four corners of its bottom.

[0011] This utility model has the following beneficial effects: 1. The limit switch triggers the controller to increase the speed of the centrifugal fan to the high speed, which quickly enhances the air intake efficiency, removes harmful gases disturbed when the door is opened, and prevents them from overflowing. When the door is closed, the centrifugal fan automatically switches to the low speed to maintain a stable slight negative pressure inside the cabinet and reduce energy consumption. 2. When the door is opened, the controller switches the airflow channel through the three-way solenoid valve, guiding the airflow discharged by the fan to the air supply pipe, and spraying it downward through the air outlet to form a uniform air curtain, forming a physical barrier. Combined with the high-speed air intake system, this double-prevents the leakage of harmful gases, significantly improving the safety when the door is opened. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the appearance and structure of this utility model; Figure 2 This is the front view of this utility model; Figure 3 This is a schematic diagram of the internal structure of the control cabinet of this utility model; Figure 4 This is a schematic diagram of the air intake device of this utility model; Figure 5 This is a schematic diagram of the gas replenishment device of this utility model; Figure 6This is a schematic diagram of the air outlet duct structure of this utility model; Figure 7 This is a schematic diagram of the position of the solenoid valve of this utility model; Icons: 1. Cabinet; 2. Storage cabinet; 21. Front door panel; 211. Glass window; 22. Electromagnetic lock; 23. Iron block; 24. Limit switch; 25. Drawer; 26. Air intake device; 261. Air intake pipe; 262. Filter hole; 263. Main air intake pipe; 264. Centrifugal fan; 265. Air supply pipe; 266. Air outlet duct; 267. Main air supply pipe; 268. Three-way solenoid valve; 269. Air outlet pipe; 27. Solenoid valve; 3. Control cabinet; 31. Equipment compartment; 32. Control compartment; 33. Fingerprint lock; 34. Display screen; 35. Rear door panel; 4. Casters. Detailed Implementation

[0013] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] like Figure 1-7As shown, in this embodiment, a wind-driven, automatically adjustable laboratory medicine cabinet includes a cabinet body 1. A storage cabinet 2 for storing medicines is located on the right side of the cabinet body 1, and a control cabinet 3 is located on the left side. A controller is installed inside the control cabinet 3. A front door panel 21 is hinged to the front of the storage cabinet 2. Electromagnetic locks 22 are fixedly installed on the upper and lower parts of the storage cabinet 2. Iron blocks 23 are fixedly installed on the front door panel 21 at positions corresponding to the electromagnetic locks 22. When the front door panel 21 is closed, the iron blocks 23 are attracted and fixed to the electromagnetic locks 22. A limit switch 24 is also fixedly installed above the storage cabinet 2. Multiple drawers 25 are installed inside the storage cabinet 2. The drawers 25 are installed on the inner side panels of the storage cabinet 2 via drawer slides on the left and right sides. A [unclear - possibly a device or mechanism] is installed on the storage cabinet 2 behind the drawers 25. The air intake device 26 includes an air intake pipe 261, a filter hole 262, an air intake manifold 263, and a centrifugal fan 264. Multiple air intake pipes 261 are located on the rear side of each drawer 25 and are fixed to the storage cabinet 2. The air intake pipes 261 have filter holes 262 distributed on the side facing the drawer 25. A main air intake manifold 263 is connected to the left side of the multiple air intake pipes 261. The bottom end of the main air intake manifold 263 is closed, and the top end is connected to the air inlet of the centrifugal fan 264. The centrifugal fan 264 is electrically connected to the controller. The main air intake manifold 263 and the centrifugal fan 264 are fixedly installed inside the control cabinet 3. The filter hole 262 effectively prevents large particles of impurities from entering the main air intake manifold 263 and the centrifugal fan 264, extending the service life of the equipment.

[0016] Specifically, when the front door 21 is open, the limit switch 24 triggers a signal, causing the controller in the control cabinet 3 to control the centrifugal fan 264 to increase its speed, enhancing the suction effect of the suction device 26 and quickly expelling harmful gases from the storage cabinet 2. This prevents the airflow inside the storage cabinet 2 from being disturbed when the front door 21 is open, thus reducing the risk of harmful gases being inhaled by staff. Simultaneously, when the front door 21 is closed, the limit switch 24 triggers a signal again, causing the controller to control the centrifugal fan 264 to reduce its speed, decreasing energy consumption and maintaining a slight negative pressure inside the storage cabinet 2. This ensures that the centrifugal fan 264 continues to properly expel gases from the storage cabinet 2.

[0017] The storage cabinet 2 is also equipped with an air replenishment device, which includes an air replenishment pipe 265, an air outlet slot 266, an air replenishment main pipe 267, a three-way solenoid valve 268, and an air outlet pipe 269. The multiple air replenishment pipes 265 are located above the front side of each drawer 25 and are fixed to the storage cabinet 2. A strip-shaped air outlet slot 266 is opened below the air replenishment pipe 265. The multiple air replenishment pipes 265 are connected to a main air replenishment pipe 267 on the left side. The bottom end of the main air replenishment pipe 267 is closed, and the top end is connected to one end of the three-way solenoid valve 268. The other two ends of the three-way solenoid valve 268 are connected to the air outlet of the centrifugal fan 264 and the air outlet pipe 269, respectively. The air outlet pipe 269 is connected to the outside world and is discharged into the atmosphere after being filtered by a gas filter. The three-way solenoid valve 268 is electrically connected to the controller.

[0018] When the current door panel 21 is open, the limit switch 24 triggers a signal, and simultaneously, the controller switches the airflow channel of the three-way solenoid valve 268, connecting the main air supply pipe 267 to the outlet of the centrifugal fan 264 via the three-way solenoid valve 268. The airflow discharged from the centrifugal fan 264 enters the air supply pipe 265 through the main air supply pipe 267 and is ejected from the air outlet slot 266, forming a circulation. The air outlet slot 266 forms a downward air curtain, further effectively preventing harmful gases from escaping from inside the drawer 25 and ensuring the safety of the operator. When the current door panel 21 is closed, the limit switch 24 triggers a signal again, and the controller switches the channel of the three-way solenoid valve 268, connecting the outlet of the centrifugal fan 264 to the air outlet pipe 269, allowing the gas to be discharged normally outdoors.

[0019] A solenoid valve 27 is installed at the connection root of each of the air intake pipes 261 and the main air intake pipe 263, and a solenoid valve 27 is also installed at the connection root of each of the air replenishment pipes 265 and the main air replenishment pipe 267. The solenoid valve 27 is electrically connected to the controller.

[0020] In practical use, each solenoid valve 27 is connected to the controller signal. Based on the type of medicine in each drawer 25, the controller is manually operated to flexibly control the opening and closing status of the solenoid valve 27 corresponding to each drawer 25, performing gas circulation or exhaust only on the drawers containing volatile or ventilated medicines. By setting independently controlled solenoid valves 27, this medicine cabinet can achieve on-demand ventilation while ensuring a stable medicine storage environment, avoiding unnecessary energy waste and further enhancing the overall safety and applicability of the cabinet. It is especially suitable for storing various types of chemical reagents with different volatility characteristics. Through this precise airflow control system, the medicine cabinet can effectively maintain the stability of the internal environment. The control cabinet 3 is divided into an equipment compartment 31 and a control compartment 32. The centrifugal fan 264 and the three-way solenoid valve 268 are fixedly installed in the equipment compartment 31. The controller is installed on the mounting plate in the control compartment 32. A fingerprint lock 33 and a display screen 34, which are electrically connected to the controller, are installed on the front side of the control compartment 32. The fingerprint lock 33 is used to verify the operator's identity information and open the solenoid lock 22. The display screen 34 is used to display and control the operating status inside the cabinet 1, including the speed of the centrifugal fan 264, the opening and closing status of the solenoid valves 27 corresponding to each drawer 25, etc., so that the operator can intuitively understand the working status of the medicine cabinet.

[0021] The control cabinet 3 is hinged to a rear door panel 35, which is equipped with heat dissipation louvers for ventilation and heat dissipation inside the control compartment 32, ensuring the stable operation of the controller and other electronic components.

[0022] A glass window 211 is fixedly installed in the middle of the front door panel 21. The glass window 211 allows operators to clearly observe the storage of medicines inside the storage cabinet 2 without opening the front door panel 21, facilitating management and retrieval. Furthermore, the glass window 211 is made of explosion-proof material, improving safety during use. In addition, a sealing strip is provided along the edge of the front door panel 21. When the front door panel 21 is closed, the sealing strip tightly fits against the edge of the storage cabinet 2, effectively preventing the leakage of harmful gases and further ensuring the safety of the operator.

[0023] The cabinet 1 is equipped with four casters 4 at the bottom corners. The casters 4 are preferably swivel casters with brakes, which facilitates the movement and handling of the entire medicine cabinet and improves the ease of use.

[0024] The working principle of this utility model is as follows: When the door panel 21 is closed, the controller controls the centrifugal fan 264 to run at a preset low speed to maintain a stable slight negative pressure state inside the storage cabinet. This allows the suction device 26 to continuously draw in air from the back of each drawer 25 through the filter holes 262 on the suction pipe 261. After the air is collected through the main suction pipe 263, it is discharged by the centrifugal fan 264 to the outlet pipe 269, and then discharged into the atmosphere after being treated by an external filter, effectively preventing the leakage of harmful gases. At this time, the three-way solenoid valve 268 keeps the outlet of the centrifugal fan 264 connected to the outlet pipe 269, ensuring that the gas is discharged in a directional manner.

[0025] Once the operator verifies their identity via fingerprint lock 33, electromagnetic lock 22 unlocks, and the opening of front door panel 21 instantly triggers limit switch 24. The controller immediately responds, increasing the speed of centrifugal fan 264 to high speed to enhance suction efficiency and quickly remove harmful gases disturbed when the door is opened. Simultaneously, it switches the channel of three-way solenoid valve 268, connecting the centrifugal fan 264 outlet to the main air supply pipe 267. Airflow flows to the air supply pipe 265 and is sprayed downwards through the air outlet slot 266, forming a uniform air curtain barrier to further prevent gas leakage. The controller also independently controls the opening and closing of solenoid valves 27 at the base of each layer's suction pipe 261 and air supply pipe 265 based on preset instructions on the display screen or real-time operation, activating airflow circulation only for drawers containing volatile chemicals, achieving precise ventilation and energy-saving optimization. After front door panel 21 closes, limit switch 24 resets, and the controller automatically restores centrifugal fan 264 to low speed operation and switches three-way solenoid valve 268 back to its initial discharge mode. The entire process is seamless, improving laboratory safety and equipment efficiency.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind-driven, automatically adjustable laboratory medicine cabinet, comprising a cabinet body (1), a storage cabinet (2) on the right side of the cabinet body (1), and a control cabinet (3) on the left side, wherein a controller is installed inside the control cabinet (3), characterized in that, The storage cabinet (2) has a front door panel (21) hinged to the front side. Electromagnetic locks (22) are fixedly installed on the top and bottom of the storage cabinet (2). Iron blocks (23) are fixedly installed on the front door panel (21) and the corresponding positions of the electromagnetic locks (22). A limit switch (24) is also fixedly installed on the top of the storage cabinet (2). Multiple drawers (25) are installed inside the storage cabinet (2). An air suction device (26) is installed on the storage cabinet (2) behind the drawers (25). The suction device (26) includes a suction pipe (261), a filter hole (262), a main suction pipe (263), and a centrifugal fan (264). Multiple suction pipes (261) are located on the back side of each drawer (25) and are fixed to the storage cabinet (2). The suction pipes (261) have filter holes (262) distributed on the side facing the drawer (25). Multiple suction pipes (261) are connected to a main suction pipe (263) on the left side. The bottom end of the main suction pipe (263) is closed and the top end is connected to the air inlet of the centrifugal fan (264). The main suction pipe (263) and the centrifugal fan (264) are fixedly installed in the control cabinet (3).

2. The wind-driven, automatically adjustable laboratory medicine cabinet according to claim 1, characterized in that, The storage cabinet (2) is also equipped with an air supply device, which includes an air supply pipe (265), an air outlet slot (266), an air supply main pipe (267), a three-way solenoid valve (268), and an air outlet pipe (269). Multiple air supply pipes (265) are located above the front side of each drawer (25) and are fixed to the storage cabinet (2). A strip-shaped air outlet slot (266) is opened below the air supply pipe (265). A main air supply pipe (267) is connected to the left side of multiple air supply pipes (265). The bottom end of the main air supply pipe (267) is closed, and the top end is connected to one end of the three-way solenoid valve (268). The other two ends of the three-way solenoid valve (268) are connected to the air outlet of the centrifugal fan (264) and the air outlet pipe (269), respectively.

3. The wind-driven, automatically adjustable laboratory medicine cabinet according to claim 2, characterized in that, A solenoid valve (27) is installed at the connection root of each of the air intake pipes (261) and the main air intake pipe (263), and a solenoid valve (27) is also installed at the connection root of each of the air replenishment pipes (265) and the main air replenishment pipe (267).

4. The wind-driven, automatically adjustable laboratory medicine cabinet according to claim 2, characterized in that, The control cabinet (3) is divided into an equipment compartment (31) and a control compartment (32) on the top and bottom respectively. The centrifugal fan (264) and the three-way solenoid valve (268) are fixedly installed in the equipment compartment (31). The controller is installed on the mounting plate in the control compartment (32). A fingerprint lock (33) and a display screen (34) are installed on the front side of the control compartment (32).

5. The wind-driven, automatically adjustable laboratory medicine cabinet according to claim 1, characterized in that, The control cabinet (3) is hinged to a rear door panel (35), and the rear door panel (35) is provided with heat dissipation louvers (36).

6. The wind-driven, automatically adjustable laboratory medicine cabinet according to claim 1, characterized in that, A glass window (211) is fixedly installed in the middle of the front door panel (21).

7. The wind-driven, automatically adjustable laboratory medicine cabinet according to claim 1, characterized in that, The cabinet (1) is equipped with four casters (4) at the bottom corners.

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