Fume hood with modular vav executive controller

Abstract

The utility model relates to a fume chamber with modular VAV executive controller, it includes cabinet and the valve body module of air valve, the valve body module of air valve sets up at the top of cabinet, the valve body module of air valve includes air valve, VAV controller and executor, VAV controller and executor fixedly set up on the outer wall of air valve, VAV controller is connected with the executor through power cord and signal line, be equipped with operating panel, displacement sensor and area existence sensor on the cabinet, operating panel, displacement sensor and area existence sensor are connected with VAV controller electric signal respectively. The utility model integrates VAV controller and executor with air valve into a whole module, can select the VAV controller of adaptation according to the model selection of air valve and executor during production, and complete VAV controller and the connection and debugging of executor, can simplify the process of installation and debugging, and can guarantee the matching degree of VAV controller and executor.

Description

Technical Field

[0001] This utility model relates to the field of fume hood technology, and in particular to a fume hood with a modular VAV actuator controller. Background Technology

[0002] Fume hoods are core equipment for laboratory ventilation. They utilize a variable air volume (VAV) control system, where the VAV controller controls the actuators to adjust the opening of the dampers. The goal of the VAV system is to respond quickly to changes in the door position and automatically maintain a stable airflow velocity across the fume hood. Currently, the VAV controller and actuators are separate components; the actuators are typically located on the dampers, while the VAV controller is connected to the control panel. This interconnected structure means the VAV controller and actuator are usually two independent devices. During fume hood manufacturing, these need to be procured separately, leading to complex installation and commissioning processes and higher costs. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to solve the problem that the existing setup of the VAV controller and actuator for fume hoods, as described in the background art, is inconvenient for wiring, installation, and debugging, and to provide a fume hood.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A fume hood with a modular VAV actuator controller includes a cabinet and a valve body module for an air valve. The valve body module is located on the top of the cabinet and includes an air valve, a VAV controller, and an actuator. The VAV controller and actuator are fixedly mounted on the outer wall of the air valve. The VAV controller and actuator are connected via power lines and signal lines. An operation panel, a displacement sensor, and a regional presence sensor are provided on the cabinet. The operation panel, displacement sensor, and regional presence sensor are respectively electrically connected to the VAV controller.

[0005] In the above scheme, the air valve is an on / off butterfly valve, and a wind speed sensor is installed inside the air valve. The wind speed sensor is electrically connected to the VAV controller. With this configuration, the wind speed sensor can detect the wind speed inside the air valve and transmit the detected data to the VAV controller. The VAV controller can then adjust the opening degree of the air valve based on the detected wind speed and the set air pressure of the fume hood.

[0006] In the above scheme, the actuator housing is fixedly connected to the outer wall of the damper, and the actuator's U-shaped buckle is fixedly connected to the damper's rotating shaft. The VAV controller is located next to the actuator, with its wiring ports facing each other. This configuration allows the VAV controller, actuator, and damper body to be designed as a single module, enabling assembly and debugging as a single product during the production phase. When installed on a fume hood, there is no need to consider the compatibility of the VAV controller, actuator, and damper body; modular installation on the fume hood is sufficient, making application more convenient. Furthermore, the wiring between the VAV controller and actuator is simpler, facilitating installation and debugging.

[0007] It should be noted that although this utility model uses devices such as a VAV controller, wind speed sensor, actuator, and valve body of the air valve, and these devices require corresponding software support to operate, these software only involve simple control software such as valve body control of the air valve, acquisition of sensor data, transmission of control signals, and adjustment of fan opening. These control software are all existing technologies, therefore this utility model does not involve improvement of software or methods.

[0008] This invention has several advantages: The fume hood with a modular VAV actuator directly mounts the VAV controller and actuator on the outer wall of the damper, integrating the damper into a single module. During production, a suitable VAV controller can be selected based on the model of the damper and actuator, and the connection and debugging of the VAV controller and actuator can be completed. When installing the damper body module into the fume hood, the damper body module can be directly installed as a whole on the top of the fume hood, eliminating the need for further connection and debugging of the VAV controller and actuator. This simplifies the installation and debugging process and ensures the compatibility between the VAV controller and actuator. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the fume hood of this utility model.

[0010] Figure 2 This is a circuit connection block diagram of the various components of the fume hood of this utility model.

[0011] The attached diagram is labeled as follows: cabinet 1, cabinet door 2, operation panel 3, displacement sensor 4, area presence sensor 5, valve body module of air valve 6, air valve 61, VAV controller 62, actuator 63, wiring port 64, and wind speed sensor 7. Detailed Implementation

[0012] The technical solution of this utility model will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0013] like Figure 1 and 2 As shown, the present invention provides a fume hood with a modular VAV actuator controller, which includes a cabinet body 1 and a valve body module 6 for the air valve.

[0014] Cabinet 1 can be a standard fume hood, such as the one described in patent document CN215466915U. A door 2 is located on the front of cabinet 1, typically an automatically lifting door. A displacement sensor 4 and a zone presence sensor 5 are located next to door 2. An operation panel 3 is also located on cabinet 1. The operation panel 3, displacement sensor 4, and zone presence sensor 5 are electrically connected to the VAV controller 62 on the valve body module 6 of the air valve. With this setup, cabinet 1 can be operated via the operation panel 3. The displacement sensor 4 detects the movement of door 2; when door 2 moves, it sends a signal to the VAV controller 62, enabling the VAV controller 62 to control the air valve 61 to maintain stable air pressure within cabinet 1. The zone presence sensor 5 detects the presence of objects or personnel within a specific area, achieving environmental monitoring and intelligent control through photoelectric technology or signal acquisition. The area presence sensor 5 can be used for safety detection of the fume hood 1. For example, when the area presence sensor 5 detects that a hand is operating at the door 2 of the fume hood, the VAV controller 62 can control the door 2 to remain open to prevent the door 2 from closing and causing harm to the operator.

[0015] The valve body module 6 of the air valve is located on the top of the cabinet 1. The valve body module 6 of the air valve includes an air valve 61, a VAV controller 62 and an actuator 63.

[0016] The type of air valve 61 can be selected according to the appropriate type, such as an on / off butterfly valve.

[0017] Preferably, a wind speed sensor 7 is provided inside the air valve 61, and the wind speed sensor 7 is electrically connected to the VAV controller 62. With this configuration, the wind speed sensor 7 can detect the wind speed inside the air valve 61 and transmit the detected data to the VAV controller 62. The VAV controller 62 can then adjust the opening degree of the air valve 61 based on the detected wind speed and the air pressure set in the fume hood.

[0018] The VAV controller 62 and the actuator 63 are fixedly mounted on the outer wall of the air valve 61. The VAV controller 62 and the actuator 63 are connected by a power line and a signal line.

[0019] The housing of actuator 63 is fixedly connected to the outer wall of damper 61, and the U-shaped buckle of actuator 63 is fixedly connected to the rotating shaft of damper 61. VAV controller 62 is located next to actuator 63, and its housing is fixedly connected to the outer wall of damper 61. The wiring port 64 of VAV controller 62 is opposite to the wiring port 64 of actuator 63, and the wiring ports 64 only need to be connected via power and signal lines. With this configuration, VAV controller 62, actuator 63, and damper 61 can be designed as a single module, allowing for assembly and debugging as a single product during the production phase. When installed on a fume hood, there is no need to consider the compatibility of the valve bodies of VAV controller 62, actuator 63, and damper 61; modular installation on the fume hood is sufficient, making application more convenient. Furthermore, the wiring between VAV controller 62 and actuator 63 is simpler, facilitating installation and debugging.

[0020] This utility model discloses a fume hood with a modular VAV actuator controller. The VAV controller and actuator are directly mounted on the outer wall of the air valve, integrating the air valve into a single module. During the production stage, a suitable VAV controller can be selected according to the model of the air valve and actuator, and the connection and debugging of the VAV controller and actuator can be completed. When installing the valve body module of the air valve into the fume hood, the valve body module can be directly installed as a whole on the top of the fume hood, eliminating the need for further connection and debugging of the VAV controller and actuator. This simplifies the installation and debugging process and ensures the compatibility between the VAV controller and actuator.

[0021] 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 fume hood with a modular VAV actuator controller, characterized in that, It includes a cabinet and a valve body module for the air valve. The valve body module for the air valve is located on the top of the cabinet. The valve body module for the air valve includes the air valve, a VAV controller, and an actuator. The VAV controller and the actuator are fixedly installed on the outer wall of the air valve. The VAV controller and the actuator are connected via power lines and signal lines. An operation panel, a displacement sensor, and a regional presence sensor are provided on the cabinet. The operation panel, displacement sensor, and regional presence sensor are respectively electrically connected to the VAV controller.

2. The fume hood with a modular VAV actuator controller according to claim 1, characterized in that: The air valve is an on / off butterfly valve, and a wind speed sensor is installed inside the air valve. The wind speed sensor is electrically connected to the VAV controller.

3. The fume hood with a modular VAV actuator controller according to claim 1, characterized in that: The actuator housing is fixedly connected to the outer wall of the air valve, the actuator's U-shaped buckle is fixedly connected to the air valve's rotating shaft, and the VAV controller is located next to the actuator, with the VAV controller's wiring port facing the actuator's wiring port.

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