CN113217956B - Anti-icing method for indoor and outdoor machines of centralized smoke exhaust system of building - Google Patents
Anti-icing method for indoor and outdoor machines of centralized smoke exhaust system of building Download PDFInfo
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- CN113217956B CN113217956B CN202010068224.1A CN202010068224A CN113217956B CN 113217956 B CN113217956 B CN 113217956B CN 202010068224 A CN202010068224 A CN 202010068224A CN 113217956 B CN113217956 B CN 113217956B
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- indoor
- range hood
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- indoor range
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/02—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
Abstract
The invention relates to an anti-icing method for an indoor machine and an outdoor machine of a building centralized smoke exhaust system, wherein the building centralized smoke exhaust system comprises M indoor smoke exhaust ventilators, a common flue and an outdoor main fan system; air outlets of the M indoor range hoods are communicated with a common flue through indoor air outlet branch pipes; an electric fire valve is arranged at the outlet of the indoor air outlet branch pipe; the outdoor main fan system comprises an outdoor main control device and an outdoor fan; m indoor range hoods are in communication connection with an outdoor main control device; the method is characterized in that: the outdoor main control device detects the outdoor temperature, and if the outdoor temperature is close to or lower than the freezing point temperature and the current time does not enter the cooking peak period, the outdoor fan is started, and the less-used indoor range hood with the use frequency lower than the preset value is started; and if the current time is about to enter the peak cooking period, starting a common indoor range hood with the use frequency more than or equal to a preset value in advance. The invention can prevent the indoor and outdoor units from freezing without additionally increasing the cost.
Description
Technical Field
The invention relates to an anti-icing method for an internal machine and an external machine of a centralized smoke exhaust system of a building.
Background
The range hood that uses in the kitchen of house and apartment at present, most all are independent separately, do not have the relation between the range hood of different residents, the user installs by oneself and inhales oil smoke and has very big randomness, most users directly set up the discharge port of range hood at the window trompil or the wall body hole digging in kitchen, the oil smoke directly discharges from the outer wall, cause the pollution interference to upper and lower floor resident family, and can cause oil pollution to the outer wall, can also influence the whole outward appearance image of building simultaneously.
With the rapid development of economy, more and more high-rise residences pull out the ground like spring shoots after rain. In order to keep the appearance of the whole building, a centralized smoke exhaust system of the building is adopted to perform centralized smoke exhaust in a plurality of high-rise civil residences, the system comprises indoor smoke exhaust ventilators arranged in kitchens of different residents on different floors, a public flue arranged in the building and an outdoor main fan system arranged on the top layer of the building, an air outlet of the indoor smoke exhaust ventilator is communicated with the public flue through an angle-adjustable electric check valve, and an air outlet of the public flue is communicated with an inlet of the outdoor fan system.
Because the air flow sucked by the outdoor fan contains partial water vapor for cooking by indoor users, when the temperature is reduced to be close to a freezing point in winter, if the indoor range hood is not opened by the indoor user at night or in the middle of night, the outdoor main fan system is in a standby state or the starting rate of the indoor range hood is low, so that the outdoor main fan system is not started, the blades, the hub and the like are easy to freeze due to continuous reduction of the external temperature, when the outdoor motor is started again, the blocked current is not necessarily enough, the motor is easy to damage, the outdoor fan per se is generally not subjected to low-temperature heat protection like an air conditioner and a water heater with a heating device, if a heat protection module is additionally arranged, the cost is additionally increased, and the reliability is low.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an indoor and outdoor machine anti-icing method of a building centralized smoke exhaust system, which can prevent the indoor and outdoor machines from icing without additionally increasing the cost.
The technical scheme adopted by the invention for solving the technical problems is as follows: an internal and external machine anti-icing method of a building centralized smoke exhaust system, wherein the building centralized smoke exhaust system comprises M indoor smoke exhaust ventilators arranged in kitchens of residents on different floors, and M is a natural number; the public flue is arranged inside the building, and the outdoor main fan system is arranged on the top layer of the building; air outlets of the M indoor range hoods are communicated with a common flue through indoor air outlet branch pipes; an electric fire valve is arranged at the outlet of the indoor air outlet branch pipe; the outdoor main fan system comprises an outdoor main control device and an outdoor fan, an air outlet of the common flue is communicated with an inlet of the outdoor fan, and an outlet of the outdoor fan is communicated with the outside; m indoor smoke exhaust ventilators are in communication connection with an outdoor main control device; the method is characterized in that: the outdoor main control device detects the outdoor temperature, and if the outdoor temperature is close to or lower than the freezing point temperature and the current time does not enter the peak cooking period, the outdoor fan is started, and the less-use indoor range hood with the use frequency lower than the preset value is started; and if the current time is about to enter the peak cooking period, starting a common indoor range hood with the use frequency more than or equal to a preset value in advance.
The outdoor main control device prevents the inner machine and the outer machine from freezing through the following steps:
step 6, if the corresponding indoor range hood accepts the start-up, starting the corresponding indoor range hood, operating according to a common gear, starting the electric fireproof valve, and then entering step 8; if the corresponding indoor range hood does not receive the starting information, entering the step 7;
step 7, pushing the information of starting up in advance to the indoor range hood ranked next, and then returning to the step 6;
step 8, obtaining a fan rotating speed n1 of the corresponding indoor range hood, and judging whether the fan rotating speed n1 is greater than a preset rotating speed, wherein the preset rotating speed is a corresponding normal operating rotating speed when the corresponding indoor range hood normally operates, and if yes, entering step 9; if not, the corresponding indoor range hood is normally started; entering step 10;
step 9, judging whether the corresponding indoor range hood operating gear is the maximum gear, if not, increasing the gear, then returning to step 8, if so, sending out the fault information of the electric fire damper of the floor, and returning to step 7;
step 10, starting an outdoor fan to enable the outdoor fan to operate at a preset rotating speed; the preset rotation speed optimal value is the low-gear rotation speed of the outdoor fan;
step 12, reading the rotation speed information returned by the indoor low-use range hood, judging whether the rotation speed of the indoor low-use range hood is greater than 0, if so, judging that the electric fire damper at the outlet of the indoor air outlet branch pipe of the floor where the indoor low-use range hood is located is sucked, and then returning to the step 2; if not, judging that the electric fire damper at the outlet of the indoor air outlet branch pipe of the floor where the corresponding less-used indoor range hood is located is stuck, starting the corresponding less-used indoor range hood, and entering the step 13;
and step 13, reading the rotation speed information returned by the low-use indoor range hood, judging whether the rotation speed of the low-use indoor range hood is greater than a preset value, if so, outputting the fault information of the floor electric fire damper, if not, closing the low-use indoor range hood, and returning to the step 11.
In the step 4, marking the indoor range hood with the starting times lower than the preset value in the last period of time as a less-used indoor range hood, and marking the indoor range hood with the starting times more than or equal to the preset value in the last period of time as a common indoor range hood; the most recent period of time is the most recent week or two weeks or three weeks or four weeks.
Compared with the prior art, the invention has the advantages that: the warm air flow generated after the outdoor fan works and the indoor range hood works is utilized to prevent the fireproof valve and the outdoor fan from being frozen or unfrozen, the user can be helped to realize fresh air ventilation to a certain degree indoors on the basis of not increasing the cost of the outdoor unit, the outdoor unit is mainly in active operation, and the noise is low. The intelligent diagnosis method has high intelligence of prevention and diagnosis, high reliability and no need of increasing additional cost.
Drawings
Fig. 1 is a schematic diagram of a centralized smoke exhaust system for a building according to an embodiment of the present invention.
Fig. 2 is a flow chart of an anti-icing method for an indoor unit and an outdoor unit of a centralized smoke exhaust system of a building in the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the following examples of the drawings.
The centralized smoke exhaust system for the building shown in fig. 1 comprises M indoor smoke exhaust ventilators 11 and … … 1M arranged in kitchens of residents on different floors, wherein M is a natural number; the system comprises a common flue 2 arranged inside a building and an outdoor main fan system 3 arranged at the top layer of the building; the air outlets of the M indoor smoke exhaust ventilators are communicated with a common flue through indoor air outlet branch pipes 5, an electric fire damper 4 is installed in each indoor air outlet branch pipe of each floor, an outdoor main fan system comprises an outdoor main control device and an outdoor fan, the air outlet of the common flue is communicated with the inlet of the outdoor fan, and the outlet of the outdoor fan is communicated with the outside; m indoor range hoods are in communication connection with an outdoor main control device and are successfully bound; the outdoor main control device prevents the internal and external machines from freezing by the following method, as shown in fig. 2:
step 6, if the corresponding indoor range hood accepts the start-up, starting the corresponding indoor oil smoke absorption, operating according to a common gear which is a frequently-used start-up gear of the corresponding indoor oil smoke absorption, opening an electric fireproof valve on an indoor air outlet branch pipe 5 of the corresponding floor, and entering step 8; if the corresponding indoor range hood does not receive the starting information, entering step 7;
step 7, pushing the information of starting up in advance to the indoor range hood ranked next, and then returning to the step 6;
step 8, obtaining a fan rotating speed n1 of the corresponding indoor range hood, and judging whether the fan rotating speed n1 is greater than a preset rotating speed, wherein the preset rotating speed is a corresponding normal operating rotating speed when the corresponding indoor range hood normally operates, and if yes, entering step 9; if not, the corresponding indoor range hood is normally started; entering the step 10;
step 9, judging whether the corresponding indoor range hood operating gear is the maximum gear, if not, increasing the gear, then returning to step 8, if so, sending out the fault information of the electric fire damper of the floor, and returning to step 7;
step 10, starting an outdoor fan to enable the outdoor fan to operate at a preset rotating speed; the preset rotation speed optimal value is the low-gear rotation speed of the outdoor fan, and then the step 2 is returned;
step 12, reading the rotation speed information returned by the indoor low-consumption range hood, judging whether the rotation speed of the indoor low-consumption range hood is greater than 0, if so, judging that the electric fire valve at the outlet of the indoor air outlet branch pipe of the floor where the corresponding indoor low-consumption range hood is located is sucked open, and then returning to the step 2; if not, judging that the electric fire damper at the outlet of the indoor air outlet branch pipe of the floor where the corresponding less-used indoor range hood is located is stuck, starting the corresponding less-used indoor range hood, and entering the step 13;
and step 13, reading the rotation speed information returned by the low-use indoor range hood, judging whether the rotation speed of the low-use indoor range hood is greater than a preset value, if so, outputting the fault information of the floor electric fire damper, if not, closing the low-use indoor range hood, and returning to the step 11.
Claims (3)
1. An internal and external machine anti-icing method of a building centralized smoke exhaust system, wherein the building centralized smoke exhaust system comprises smoke exhaust ventilators in M rooms arranged in kitchens of residents on different floors, wherein M is a natural number; the public flue is arranged inside the building, and the outdoor main fan system is arranged on the top layer of the building; air outlets of the M indoor range hoods are communicated with a common flue through indoor air outlet branch pipes; an electric fire valve is arranged at the outlet of the indoor air outlet branch pipe; the outdoor main fan system comprises an outdoor main control device and an outdoor fan, an air outlet of the common flue is communicated with an inlet of the outdoor fan, and an outlet of the outdoor fan is communicated with the outside; m indoor range hoods are in communication connection with an outdoor main control device; the method is characterized in that: the outdoor main control device detects the outdoor temperature, and if the outdoor temperature is close to or lower than the freezing point temperature and the current time does not enter the cooking peak period, the outdoor fan is started, and the less-used indoor range hood with the use frequency lower than the preset value is started; and if the current time is about to enter the peak cooking period, starting a common indoor range hood with the use frequency more than or equal to a preset value in advance.
2. The inside and outside machine anti-icing method according to claim 1, characterized in that: the outdoor main control device prevents the inner machine and the outer machine from freezing through the following steps:
step 1, starting an outdoor main control device;
step 2, acquiring the outlet or outdoor temperature of the outdoor fan;
step 3, judging whether the temperature at the outlet of the outdoor fan or the outdoor temperature is close to or lower than the freezing point temperature, if not, returning to the step 2; if so, inquiring whether an indoor range hood is running; if yes, returning to the step 2; if not, inquiring historical starting information corresponding to the range hood in the current time chamber;
step 4, dividing the indoor range hoods into common indoor range hoods and less-used indoor range hoods according to the starting information of the range hoods in the indoor chamber in the recent period of time, and sequencing the common indoor range hoods according to the starting times;
step 5, judging whether a cooking peak period is about to enter according to the current time, wherein the starting time and the ending time of the cooking peak period are preset; sequencing according to the starting times of the common indoor range hoods within a recent period of time, and pushing a message needing to be started in advance to the indoor range hood at the top of the rank; if not, entering step 11;
step 6, if the corresponding indoor range hood accepts the start-up, starting the corresponding indoor range hood, operating according to a common gear, starting the electric fireproof valve, and then entering step 8; if the corresponding indoor range hood does not receive the starting information, entering the step 7;
step 7, pushing the information of starting up in advance to the indoor range hood ranked next, and then returning to the step 6;
step 8, obtaining a fan rotating speed n1 of the corresponding indoor range hood, and judging whether the fan rotating speed n1 is greater than a preset rotating speed, if so, entering step 9; if not, the corresponding indoor range hood is normally started; entering the step 10;
step 9, judging whether the corresponding indoor range hood operating gear is the maximum gear, if not, increasing the gear, then returning to step 8, if so, sending out the fault information of the floor electric fire damper, and returning to step 7;
step 10, starting an outdoor fan to enable the outdoor fan to operate at a preset rotating speed;
step 11, starting an outdoor fan to enable the outdoor fan to operate at a preset rotating speed; meanwhile, opening an electric fireproof valve at an outlet of an indoor air outlet branch pipe of a floor where the less-used indoor range hood is located;
step 12, reading the rotation speed information returned by the indoor low-consumption range hood, judging whether the rotation speed of the indoor low-consumption range hood is greater than 0, if so, judging that the electric fire valve at the outlet of the indoor air outlet branch pipe of the floor where the corresponding indoor low-consumption range hood is located is sucked open, and then returning to the step 2; if not, judging that the electric fire damper at the outlet of the indoor air outlet branch pipe of the floor where the corresponding less-used indoor range hood is located is stuck, starting the corresponding less-used indoor range hood, and entering the step 13;
and step 13, reading the rotation speed information returned by the indoor low-consumption range hood, judging whether the rotation speed of the indoor low-consumption range hood is greater than a preset value or not, if so, outputting the fault information of the floor electric fire damper, otherwise, closing the indoor low-consumption range hood, and returning to the step 11.
3. The icing preventing method for indoor and outdoor units according to claim 2, wherein: in the step 4, marking the indoor range hood with the starting times lower than the preset value in the last period of time as a less-used indoor range hood, and marking the indoor range hood with the starting times more than or equal to the preset value in the last period of time as a common indoor range hood; the last period of time is the last week or two weeks or three weeks or four weeks.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010068224.1A CN113217956B (en) | 2020-01-21 | 2020-01-21 | Anti-icing method for indoor and outdoor machines of centralized smoke exhaust system of building |
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| CN202010068224.1A CN113217956B (en) | 2020-01-21 | 2020-01-21 | Anti-icing method for indoor and outdoor machines of centralized smoke exhaust system of building |
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| CN113217956A CN113217956A (en) | 2021-08-06 |
| CN113217956B true CN113217956B (en) | 2022-07-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5001894B2 (en) * | 2008-04-02 | 2012-08-15 | 積水化学工業株式会社 | Building ventilation system and unit building |
| CN102809978B (en) * | 2012-07-10 | 2014-12-10 | 浙江宇视科技有限公司 | Anti-icing method and system for outdoor dome camera |
| KR102564573B1 (en) * | 2016-09-09 | 2023-08-07 | 삼성전자주식회사 | Cook top, range hood and control mehtods thereof |
| CN109737557B (en) * | 2018-12-21 | 2021-11-02 | 青岛海尔空调电子有限公司 | Anti-frosting control method and system for outdoor unit of air conditioner |
| CN110500625B (en) * | 2019-07-24 | 2021-02-26 | 宁波方太厨具有限公司 | Building outdoor auxiliary smoke discharging and purifying system and control method thereof |
| CN110375365B (en) * | 2019-07-24 | 2020-08-11 | 宁波方太厨具有限公司 | Intelligent building smoke exhaust system and control method thereof |
| CN110486766B (en) * | 2019-08-23 | 2020-09-15 | 宁波方太厨具有限公司 | Automatic coding method for range hood of central flue system |
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