A system for multiple restaurants to share an oil fume exhaust system

Abstract

The utility model discloses a kind of for multiple catering shops share exhaust fume system, including shop fan, flow sensor, controller, signal receiving device, signal sending device, fan frequency converter, exhaust fume total fan and exhaust fume purification device, shop fan is equipped with multiple, flow sensor is respectively arranged in the pipeline of each shop fan, flow sensor is electrically connected with signal receiving device, controller is electrically connected with signal receiving device, signal sending device respectively, signal sending device is electrically connected with fan frequency converter, exhaust fume total fan, fan frequency converter is electrically connected with exhaust fume total fan, exhaust fume purification device is arranged on the pipeline of exhaust fume total fan, exhaust fume purification device is also electrically connected with signal receiving device and signal sending device respectively. Compared with prior art, energy consumption can be reduced.

Description

Technical Field

[0001] This utility model relates to a shop exhaust system, and more particularly to an exhaust system for multiple catering shops to share. Background Technology

[0002] Sharing a kitchen exhaust system among multiple restaurants is a common practice in commercial buildings. Its advantages include a centralized exhaust shaft system, allowing for concentrated fumes discharge at appropriate locations, thus saving on construction and maintenance costs. Typically, a two-stage exhaust system is used, with a primary exhaust fan in each restaurant and a secondary main exhaust fan on the roof, preceded by a fume purification device. However, the usage time and frequency of the exhaust systems in different restaurants often vary. If the main roof exhaust fan is always fully operational, high energy consumption can occur when only a few restaurants' systems are in use, which is not environmentally friendly. Utility Model Content

[0003] The purpose of this utility model is to provide a shared exhaust system for multiple catering establishments, and the technical problem to be solved is to reduce energy consumption.

[0004] To solve the above problems, this utility model adopts the following technical solution: a shared exhaust system for multiple catering shops, including shop-specific fans, flow sensors, controllers, signal receiving devices, signal transmitting devices, fan frequency converters, a main exhaust fan, and an exhaust purification device. Multiple shop-specific fans are provided, and flow sensors are respectively installed in the ducts of each shop-specific fan. The flow sensors are electrically connected to the signal receiving devices. The controller is electrically connected to both the signal receiving and signal transmitting devices. The signal transmitting devices are electrically connected to the fan frequency converters and the main exhaust fan. The fan frequency converters are electrically connected to the main exhaust fan. The exhaust purification device is installed on the duct of the main exhaust fan and is also electrically connected to both the signal receiving and signal transmitting devices. The controller uses the flow sensors to determine whether the shop-specific fans are running to control the fan frequency converters to change their frequency, thereby changing the frequency of the main exhaust fan. The controller also controls the activation of the exhaust purification device and the main exhaust fan.

[0005] Furthermore, when the controller sends a start signal to the main exhaust fan via the signal sending device, it also sends an interlock start signal to the fume purification device.

[0006] Furthermore, the controller is also electrically connected to the shop's indoor fans via a signal transmitting device, so that when an alarm signal is received from the fume purification device, the indoor fans and the main exhaust fan will be shut down in an interlocking manner.

[0007] Furthermore, the operating frequency of the wind turbine inverter is 20Hz, 40Hz or 50Hz.

[0008] Furthermore, when the number of fans operating in the shop is less than or equal to one-third of the total number of fans in the shop, the controller sends a low-frequency operation command to the fan inverter, and the fan inverter adjusts its operating frequency to 20Hz; when the number of fans operating in the shop is greater than one-third of the total number of fans in the shop, and the number of fans operating in the shop is less than or equal to two-thirds of the total number of fans in the shop, the controller sends a medium-frequency operation command to the fan inverter, and the fan inverter adjusts its operating frequency to 40Hz; when the number of fans operating in the shop is greater than two-thirds of the total number of fans in the shop, the controller sends a high-frequency operation command to the fan inverter, and the fan inverter adjusts its operating frequency to 50Hz.

[0009] Compared with the prior art, this utility model, by installing a flow sensor on the duct of the shop's internal fan and controlling the shop's internal fan, flow sensor, fan frequency converter, main exhaust fan, and fume purification device through a controller, realizes the adjustment of the frequency of the fan frequency converter to change the operating frequency of the main exhaust fan. In this way, energy consumption can be reduced while ensuring the normal operation of the fume system. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0012] like Figure 1 As shown, this utility model discloses a shared exhaust system for multiple catering shops, including a shop-specific fan 1, a flow sensor 2, a controller 3, a signal receiving device 4, a signal transmitting device 5, a fan frequency converter 6, a main exhaust fan 7, and an exhaust purification device 8, wherein:

[0013] The shop has multiple ventilation fans.

[0014] The number of flow sensors 2 is equal to the number of fans 1 in the shop. The flow sensors 2 are installed in the pipes of each fan 1 in the shop. The flow sensors 2 are electrically connected to the signal receiving device 4. The flow sensors 2 are used to sense whether the fans 1 in the shop are in the on state and feed the signal back to the controller 3 through the signal receiving device 4.

[0015] The controller 3 is electrically connected to the signal receiving device 4 and the signal transmitting device 5 respectively. The controller 3 uses the flow sensor 2 to determine whether the shop fan 1 is started in order to control the frequency converter 6 of the fan to change the frequency, and to control the opening of the oil fume purification device 8 and the main exhaust fan 7.

[0016] The signal transmitting device 5 is electrically connected to the fan frequency converter 6 and the main exhaust fan 7. The fan frequency converter 6 is electrically connected to the main exhaust fan 7. The fume purification device 8 is installed on the duct of the main exhaust fan 7. The fume purification device 8 is also electrically connected to the signal receiving device 4 and the signal transmitting device 5 respectively.

[0017] While the controller 3 is sending a start signal to the main exhaust fan 7 via the signal sending device 5, it is also sending an interlock start signal to the fume purification device 8.

[0018] like Figure 1 As shown, in this utility model, the shop's indoor fan 1 is connected to the signal transmitting device 5 via a signal line; the main exhaust fan 7 is connected to the fan inverter 6 via a low-voltage cable; the main exhaust fan 7 is connected to the signal transmitting device 5 via a signal line; the fume purification device 8 is connected to the signal transmitting device 5 and the signal receiving device 4 via a signal line; the flow sensor 2 is connected to the signal receiving device 4 via a signal line; the controller 3 is connected to the signal receiving device 4 and the signal transmitting device 5 via a signal line; and the fan inverter 6 is connected to the signal transmitting device 5 via a signal line.

[0019] In this utility model, the power supply for the shop's internal fan 1 is provided by the shop's internal power supply system, while the power supply for the controller 3, the fume purification device 8, the fan frequency converter 6, the signal transmitting device 5, and the signal receiving device 4 is provided by the power supply system of the property where the shop is located.

[0020] When a fan 1 in a shop in the building is turned on, the air in the exhaust duct flows. The flow sensor 2 detects the flow and sends a signal to the signal receiving device 4. The signal receiving device 4 receives the signal and feeds it back to the controller 3 to collect the start signal of the fan 1 in the shop. When the number of fans increases, the controller 3 collects the start signal of the fan 1 in the shop in the same way.

[0021] After the signal is acquired, the controller 3 sends a frequency conversion signal to the fan frequency converter 6 through the signal sending device 5. The controller 3 controls the start of the main exhaust fan 7 and simultaneously controls the start of the fume purification device 8. The fan frequency converter 6 adjusts the working frequency of the main exhaust fan 7 according to the frequency conversion signal.

[0022] In this invention, when the controller 3 receives an alarm signal from the fume purification device 8, it also interlocks and shuts down the shop's indoor fan 1 and the main exhaust fan 7. Generally, the alarm signal indicates a malfunction in the fume purification device 8 or a need to replace consumables.

[0023] The wind turbine inverter 6 operates at three frequencies: 20Hz, 40Hz, and 50Hz. 20Hz is the low frequency, 40Hz is the medium frequency, and 50Hz is the high frequency. Setting three operating frequencies can avoid the problem of frequent adjustments to the inverter and the wind turbine.

[0024] In this invention, when the number of ventilators 1 operating in the shop is less than or equal to 1 / 3 of the total number of ventilators 1 in the shop, the controller 3 sends a low-frequency operation command to the fan inverter 6, and the fan inverter 6 adjusts its operating frequency to 20Hz; when the number of ventilators 1 operating in the shop is greater than or equal to 1 / 3 of the total number of ventilators 1 in the shop, and the number of ventilators 1 operating in the shop is less than or equal to 2 / 3 of the total number of ventilators 1 in the shop, the controller 3 sends a medium-frequency operation command to the fan inverter 6, and the fan inverter 6 adjusts its operating frequency to 40Hz; when the number of ventilators 1 operating in the shop is greater than or equal to 2 / 3 of the total number of ventilators 1 in the shop, the controller 3 sends a high-frequency operation command to the fan inverter 6, and the fan inverter 6 adjusts its operating frequency to 50Hz.

[0025] This invention reduces energy consumption by adjusting the operating frequency of the main exhaust fan using a frequency converter.

Claims

1. A shared exhaust system for multiple catering establishments, comprising an in-store fan (1), characterized in that: It also includes a flow sensor (2), a controller (3), a signal receiving device (4), a signal transmitting device (5), a fan frequency converter (6), a main exhaust fan (7), and an oil fume purification device (8). There are multiple fans (1) in the shop. The flow sensor (2) is installed in the pipe of each fan (1) in the shop. The flow sensor (2) is electrically connected to the signal receiving device (4). The controller (3) is electrically connected to the signal receiving device (4) and the signal transmitting device (5) respectively. The signal transmitting device (5) is connected to the fan frequency converter (6) and the main exhaust fan (8). The machine (7) is electrically connected, the fan frequency converter (6) is electrically connected to the main exhaust fan (7), the fume purification device (8) is installed on the duct of the main exhaust fan (7), the fume purification device (8) is also electrically connected to the signal receiving device (4) and the signal sending device (5) respectively, the controller (3) determines whether the fan (1) in the shop is started through the flow sensor (2) to control the fan frequency converter (6) to change the frequency, thereby changing the frequency of the main exhaust fan (7), the controller (3) also controls the opening of the fume purification device (8) and the main exhaust fan (7).

2. The exhaust system for multiple catering establishments as described in claim 1, characterized in that: When the controller (3) sends a start signal to the main exhaust fan (7) through the signal sending device (5), it also sends a chain start signal to the fume purification device (8).

3. The exhaust system for multiple catering establishments as described in claim 2, characterized in that: The controller (3) is also electrically connected to the shop fan (1) via the signal transmitting device (5) so that when it receives the alarm signal from the fume purification device (8), it will shut down the shop fan (1) and the main exhaust fan (7).

4. The exhaust system for multiple catering establishments as described in claim 3, characterized in that: The operating frequency of the wind turbine inverter (6) is 20Hz, 40Hz or 50Hz.

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