CN210979963U

CN210979963U - Commercial kitchen combination formula system of discharging fume

Info

Publication number: CN210979963U
Application number: CN201920642086.6U
Authority: CN
Inventors: 刘俊杰; 陈文华; 王攀; 张丁超
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-07-10
Anticipated expiration: 2029-05-07

Abstract

The utility model discloses a commercial kitchen combination formula system of discharging fume, including a plurality of modularization exhaust hood units, exhaust pipe, indoor total exhaust fan and outdoor new trend benefit fan etc.. The utility model discloses with the leading oil smoke prefilter front end to every exhaust hood unit of the axial fan of the low pressure head of big amount of wind, compare for a plurality of exhaust hoods provide the amount of exhaust with a traditional main fan, can thoroughly solve the unbalanced phenomenon of airing exhaust. Each stove eye corresponds to one modular exhaust hood unit, and the modular exhaust hood units are assembled according to the number of the stove eyes, so that the design cost and the processing cost of the kitchen exhaust system are reduced. The utility model discloses a terminal axial fan adds the mode that integrated wind channel main blower airs exhaust, can reduce the requirement of main fan pressure head to can reduce its power and noise, reduce outdoor main fan to the influence of building sound environment on every side. The rotating shaft of the axial flow fan is connected with the dynamic rotating oil smoke filter screen disc, so that the axial flow fan and the rotating screen disc can be controlled in a linkage manner to reduce the control cost.

Description

Commercial kitchen combination formula system of discharging fume

Technical Field

The utility model relates to a kitchen oil smoke processing system especially relates to a commercial kitchen combination formula system of discharging fume.

Background

Large kitchen cooking activities can generate a large amount of oil fume pollutants, water vapor and waste heat, and an efficient oil fume exhaust system is needed to control the oil fume pollutants, the water vapor and the waste heat so as to guarantee the air quality and the hot and humid environment of the kitchen working environment. The air exhaust volume of the existing kitchen oil fume exhaust fan and the air supplement volume of the air supplement fan are generally designed and selected according to the maximum air volume required by all cookers in a kitchen, so that the corresponding fan has high power. However, the cookers in the kitchen are not always operated at full load, and if the kitchen fume exhaust system is not effectively controlled, huge waste of energy is caused. The current practical situation is that most of the oil smoke exhaust fans in kitchens are always in a full-load use state, and in fact, energy waste is caused.

In view of the above, there have been proposed control methods for the oil smoke emission of the kitchen in related patents, such as "hotel apartment centralized oil smoke emission control system" disclosed in the chinese utility model patent with the grant publication number CN204256566U and "a kitchen oil smoke control system" disclosed in the chinese utility model patent with the grant publication number CN205174501U, which all propose control methods for the oil smoke emission of the kitchen. The common characteristic of both patents is that the air volume of the exhaust fan is controlled by measuring the oil smoke temperature, the air pressure difference and the concentration respectively by the temperature, the pressure difference and the oil smoke concentration sensor module. The method for controlling a plurality of parameters is complex, and the cost of the control system is high: and theoretical analysis also has problems, and the method can not be implemented in practical operation, such as: the change of the air volume of the fan is guided by monitoring the temperature of the oil fume, so that a theoretical basis cannot be found and the implementation cannot be realized; through the concentration test to the oil smoke pollutant, can only prove the purification efficiency of oil smoke purifier, also can not guide the change of exhaust fan amount of wind. In the above patent, only the wind pressure really controlling the change of the wind volume of the exhaust fan is used. Although the above control system and control method can solve the problem of kitchen fume emission, the control system and control method thereof need to be further optimized and improved.

Disclosure of Invention

An object of the utility model is to overcome the not enough of prior art, provide an assembled, pressure balance type, low noise, energy-conserving commercial kitchen combination formula system of discharging fume.

A commercial kitchen combined smoke exhaust system comprises a plurality of modularized exhaust hood units which are arranged corresponding to each cooking range arranged on a cooking bench, wherein the modularized exhaust hood units are arranged above the cooking ranges in a one-to-one correspondence manner; each modularized exhaust hood unit comprises an exhaust hood, an exhaust port of the exhaust hood is communicated with an inlet of an air duct arranged along the vertical direction, an outlet of the air duct is communicated with an inlet of a main exhaust pipe arranged along the horizontal direction through a flange, an axial flow fan and an electromagnetic air valve are sequentially arranged in the air duct from bottom to top, the electromagnetic air valve is opened in a one-way mode to prevent oil smoke from flowing backwards and mixing smoke, a rotating shaft of the axial flow fan extends out of a shell of the axial flow fan at the front end of a fan blade, and the lower end of the rotating shaft is connected with a dynamic rotation oil smoke filter screen disc through a nut;

an outer shell is fixed on the front wall of the exhaust hood, the outer shell and the front wall of the exhaust hood form an outdoor fresh air and air supplementing air curtain, an air supply port and an air curtain port are respectively arranged on the top wall and the bottom wall of the outer shell body, the air curtain port is communicated with the indoor space, the air supply port is communicated with the outlet of an air supply air curtain air pipe, an air supplementing air curtain electromagnetic air valve is arranged on the air supplementing air curtain air pipe, an inlet of the air supplementing air curtain air pipe is arranged outdoors, a first fresh air supplementing fan is arranged at the inlet of the air supplementing air curtain air pipe, the exhaust tail end of the main exhaust pipe is sequentially provided with a gas filtering module, an oil smoke sensor and an outdoor exhaust fan along the exhaust direction, one end of an air supply pipeline is communicated with an air supply opening formed in the wall of a kitchen, the other end of the air supply pipeline is arranged outside the room, and a second fresh air supply fan is arranged on the air supply pipeline outside the room;

the unit controller is installed on the exhaust hood of each modular exhaust hood unit, the axial flow fan of each modular exhaust hood unit is connected with one unit controller through a control line, and all the unit controllers, the outdoor exhaust fan, the oil smoke sensor, the first fresh air supply fan and the second fresh air supply fan are connected with the system controller through control lines respectively.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the axial flow fan with large air volume and low pressure head is arranged in front of the oil smoke prefilter of each exhaust hood unit, and compared with the traditional main fan which provides exhaust volume for a plurality of exhaust hoods, the phenomenon of unbalanced exhaust can be thoroughly solved.

(2) The requirement of the pressure head of the main fan can be reduced by the mode that the tail end axial flow fan and the main fan of the integrated air duct exhaust air, so that the power and the noise of the main fan can be reduced, and the influence of the outdoor main fan on the sound environment of the surrounding building can be reduced.

(3) Through the dynamic oil smoke filtration system of terminal axial fan with rotatory net dish, compare traditional oil smoke primary filter, can improve the elementary filtration efficiency of its oil smoke, can reduce the capacity pressure of follow-up high efficiency filter system on the one hand, on the other hand can reduce the pollution to the passageway of discharging fume. Compare traditional rotatory filter screen dish simultaneously, this system can reduce an extra motor, can reduce cost on the one hand, and on the other hand can realize axial fan rotational speed and screen dish coordinated control and reduce control cost.

(4) The axial flow fan of each exhaust hood unit is controlled by a manual controller of each unit, so that system switching and air volume adjustment can be realized.

(5) The integral exhaust system of the kitchen can be formed by assembling a plurality of modularized exhaust hood units according to the number of the cooking holes, so that the design cost and the processing cost of the exhaust system of the kitchen are reduced.

(6) The air quantity information controlled by the units is fed back to the controller, and the output signals are processed to control the opening of an air valve of each modular exhaust hood unit and the rotating speeds of an air curtain blower, a kitchen air supplementing fan and an outdoor exhaust fan. The cost of the control system can be reduced. The use of expensive temperature, pressure difference and oil smoke concentration sensor modules can be reduced in each modularized exhaust hood unit, the problem that the precision is reduced due to oil smoke pollution when the modularized exhaust hood units are used is avoided, and the operation cost is reduced.

(7) The workload of the oil smoke post-processing module is controlled by the oil smoke post-processing module post-arranged oil smoke concentration sensor module of the total fan exhaust volume information and the total exhaust pipe section oil smoke post-processing module, and the service life of the sensor can be prolonged and the control precision of the sensor can be improved by arranging the sensor at the tail end.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, the drawings in the following description are only 1 embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is an exploded schematic view of a combined smoke exhaust system of a commercial kitchen in parallel to a direction of a cooking bench according to an embodiment of the present invention;

fig. 2 is an exploded view of a commercial kitchen combined smoke exhaust system in a direction perpendicular to a cooking bench according to an embodiment of the present invention;

fig. 3 is an embodiment of the utility model provides a commercial kitchen combination formula exhaust system air exhaust fan, air curtain fan and the energy-saving control system who mends the air fan.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and accompanying drawings.

As shown in the accompanying drawing 1 the utility model discloses a commercial kitchen combination formula system of discharging fume, including a plurality of modularization exhaust hood units 3 that correspond each and install 2 settings of the eye of a kitchen range on top of a kitchen range 1, a plurality of modularization exhaust hood units 3 one-to-one install in the top of the eye of a kitchen range 2.

Each modular hood unit 3 comprises a hood 4, which can be of the existing structure in the market. The exhaust hood is characterized in that a smoke outlet of the exhaust hood is communicated with an inlet of an air duct 8 arranged in the vertical direction, and an outlet of the air duct 8 is communicated with an inlet of a main exhaust pipe 10 arranged in the horizontal direction through a flange.

An axial flow fan 7 and an electromagnetic air valve 9 are sequentially installed in the air duct 8 from bottom to top, and the electromagnetic air valve 9 is opened in a one-way mode to prevent oil smoke from flowing backwards and mixing with smoke. The electromagnetic air valve 9 is commercially available, the rotating shaft 6 of the axial flow fan 7 extends out of the shell of the axial flow fan 7 at the front end of the fan blade, the lower end of the rotating shaft 6 is connected with the dynamic rotating oil smoke filter screen disc 5 through a nut, and the dynamic rotating oil smoke filter screen disc 5 can be easily dismounted through the nut so as to be convenient to clean, maintain and replace. Compared with the traditional static oil fume filter, the dynamic rotating oil fume filter screen disc can improve the filtering efficiency of oil fume particles of 2.5-10 microns. The structure of the dynamic rotating oil smoke filter screen disc can refer to chinese patent 201610852728.6.

Compare the tradition kitchen exhaust system who only uses outdoor fan, axial fan is leading can improve the static pressure capture effect of exhaust hood below in the exhaust hood casing to improve the capture efficiency of exhaust hood to oil smoke pollutant, vapor and useless waste heat volume, improve kitchen operational environment's air quality and hot humid environment, thoroughly solve the unbalanced phenomenon of airing exhaust simultaneously.

The antetheca of exhaust hood 4 on be fixed with the shell body, the antetheca of shell body and exhaust hood 4 constitute outdoor new trend and mend wind air curtain 14 the roof and the diapire of shell body on open respectively and have air supply wind gap and air curtain wind gap, air curtain wind gap and indoor intercommunication, air supply wind gap and the export intercommunication of air curtain tuber pipe 16 of meneing on install air curtain electromagnetic air valve 15 of meneing. The inlet of the air supply air curtain air pipe 16 is arranged outdoors, and the inlet of the air supply air curtain air pipe 16 is provided with a first fresh air supply fan 19. The width of an air supply port of the outdoor air supplementing air curtain can be designed to be 5cm, and the air speed is 1 m/s. Local air curtain mends wind and can also give people the breathing zone new trend at culinary art in-process, realizes kitchen negative pressure air inlet, fixed point delivery. The specific structure of the air curtain is just required to adopt Chinese patent with patent number 201410219745.

The exhaust tail end of the main exhaust pipe 10 is sequentially provided with a gas filtering module 11, an oil smoke sensor 12 and an outdoor exhaust fan 13 along the exhaust direction, and the gas filtering module 11 can adopt an oil smoke electrostatic filter.

The air supplementing system of the whole kitchen consists of the fresh air supplementing air curtain 14 of each modular exhaust hood unit 3 and a comprehensive kitchen air supplementing system, and a fan of the comprehensive kitchen air supplementing system is a second fresh air supplementing fan 20. Supply air duct one end and the opening supply air outlet intercommunication on the kitchen wall and the other end setting is in the outdoor side, in the outdoor side supply air duct on install second new trend moisturizing machine 20, the engineer can look the kitchen size and carry out the flexibility to the position in supply air outlet and arrange.

The mechanical air supply also solves the problems of energy consumption and heat discomfort caused by natural ventilation of large commercial kitchens and improves the oil smoke separation efficiency. For small commercial kitchens, the first fresh air make-up air curtain 14 may also be used in combination with natural make-up air that permeates through the doors and windows.

As shown in fig. 3, a unit controller 17 is installed on the exhaust hood 4 of each modular exhaust hood unit 3, and the axial flow fan 7 of each modular exhaust hood unit 3 is connected with one unit controller 17 through a control line. An operator such as a cook can adjust the air volume of the modular hood unit 3 according to the type of cooked food. The air volume of the axial flow fan 7 can be controlled at 600-2000m through the unit controller 17 of the modularized exhaust hood³The speed of the axial flow fan is up to 2800 revolutions per minute.

All the unit controllers 17, the outdoor exhaust fan 13, the lampblack sensor 12, the first fresh air supplementing fan 19 and the second fresh air supplementing fan 20 are respectively connected with the system controller 18 through control lines. Each unit controller 17 feeds back the air volume signal to the system controller 18, and the system controller 18 is connected with the outdoor exhaust fan 13 through a control line so as to control the exhaust volume of the outdoor exhaust fan 13 according to the air volume of each unit controller 17.

The system controller 18 adjusts the operation power of the gas filtering module 11 according to the air volume of the outdoor exhaust fan 13 and the feedback signal of the lampblack sensor 12, and the adjusting mode can greatly reduce the control cost and achieve good energy-saving and environment-friendly effects. Meanwhile, the system controller 18 sends a rotation speed signal to the first fresh air supply fan 19 according to the opening number of the modular exhaust hood units 3 to control the air supply amount of the first fresh air supply fan 19, and the more the opening number is, the larger the air supply amount of the first fresh air supply fan 19 is. The system controller 18 determines to send a rotation speed signal to the second fresh air supplementing fan 20 according to the sum of the air supply quantities of the first fresh air supplementing fan 19 (for example, the rotation speed signal is sent to the second fresh air supplementing fan 20 according to the principle that the sum of the air supply quantities of the first fresh air supplementing fan 19 is 90% of the exhaust air quantity of the system) so as to control the air quantity.

The embodiments described above are intended to facilitate one of ordinary skill in the art to understand and practice the invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments herein, and those skilled in the art should understand that modifications and alterations made without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a commercial kitchen combination formula system of discharging fume which characterized in that: the modular exhaust hood comprises a plurality of modular exhaust hood units which are arranged corresponding to each cooking range on a cooking bench, wherein the plurality of modular exhaust hood units are arranged above the cooking ranges in a one-to-one correspondence manner; each modularized exhaust hood unit comprises an exhaust hood, an exhaust port of the exhaust hood is communicated with an inlet of an air duct arranged along the vertical direction, an outlet of the air duct is communicated with an inlet of a main exhaust pipe arranged along the horizontal direction through a flange, an axial flow fan and an electromagnetic air valve are sequentially arranged in the air duct from bottom to top, the electromagnetic air valve is opened in a one-way mode to prevent oil smoke from flowing backwards and mixing smoke, a rotating shaft of the axial flow fan extends out of a shell of the axial flow fan at the front end of a fan blade, and the lower end of the rotating shaft is connected with a dynamic rotation oil smoke filter screen disc through a nut;