CN116045327A - Anti-reverse oil smoke device, system and control method of anti-reverse oil smoke device - Google Patents

Abstract

The embodiment of the invention provides an oil smoke fall prevention device, an oil smoke fall prevention system and a control method of the oil smoke fall prevention device, and belongs to the field of oil smoke treatment. An anti-tipping smoke device comprising: the exhaust pipe is connected with the exhaust pipe of the range hood, and the exhaust end of the U-shaped pipeline is connected with the exhaust main pipe; the liquid inlet pipe is arranged at the bottom of the U-shaped pipeline and is communicated with the inside of the U-shaped pipeline through the liquid inlet end of the U-shaped pipeline, and a liquid inlet valve is arranged on a liquid inlet pipeline of the liquid inlet pipe; the liquid discharge pipe is arranged at the bottom of the U-shaped pipeline and is communicated with the inside of the U-shaped pipeline through a liquid discharge end of the U-shaped pipeline, and a liquid discharge valve is arranged on the liquid discharge pipe of the liquid discharge pipe; the automatic liquid exchange mechanism is respectively and electrically connected with the liquid inlet valve and the liquid outlet valve, and the U-shaped pipeline can execute automatic liquid outlet and automatic liquid inlet under the control of the automatic liquid exchange mechanism. The U-shaped pipeline is sealed by liquid, so that the reverse oil smoke can be effectively prevented from flowing back to a kitchen.

Description

Anti-reverse oil smoke device, system and control method of anti-reverse oil smoke device

Technical Field

The invention relates to the technical field of oil smoke treatment, in particular to an oil smoke fall prevention device, an oil smoke fall prevention system and a control method of the oil smoke fall prevention device.

Background

Kitchen fumes have a certain harm to human body. While kitchen fumes have two sources: firstly, the cooking of the kitchen ventilator generates oil smoke, and secondly, the kitchen ventilator is used for pouring the oil smoke. Along with the continuous lifting of the total height and floors of residential buildings, the pressure of the oil smoke total exhaust pipe is larger and larger, and even the oil smoke machine can be returned, so that the health of a human body is continuously influenced.

The existing oil fume fall prevention device mainly adopts a mechanical check valve and an electric butterfly valve. The mechanical check valve is the most common device used by domestic residents at present, but after the device is used for a period of time, the condition that the sealing surface of the check plate closing member cannot be completely sealed due to oil stain sticking can occur, and even the condition that the closing member is blocked and cannot be normally closed due to excessive oil stain sticking can occur, so that the reverse smoke prevention effect of the mechanical check valve is gradually deteriorated and even completely fails. The electric butterfly valve is driven by the motor to open and close the butterfly valve, so that the electric butterfly valve has no problem of complete locking compared with a mechanical check valve, but still has the problem that the sealing surface of the opening and closing valve flap is smeared with oil so that the electric butterfly valve cannot be completely sealed and air leakage occurs.

The invention provides an oil smoke reverse prevention device, an oil smoke reverse prevention system and a control method of the oil smoke reverse prevention device, which can effectively prevent oil smoke reverse from flowing back to a kitchen.

Disclosure of Invention

The invention aims to provide an oil smoke fall prevention device, an oil smoke fall prevention system and a control method of the oil smoke fall prevention device.

In order to achieve the above object, in a first aspect, an embodiment of the present invention provides an anti-reverse smoke device, including:

the exhaust pipe is connected with the exhaust pipe of the range hood, and the exhaust end of the U-shaped pipeline is connected with the exhaust main pipe;

the liquid inlet pipe is arranged at the bottom of the U-shaped pipeline and is communicated with the inside of the U-shaped pipeline through a liquid inlet end of the U-shaped pipeline, and a liquid inlet valve is arranged on a liquid inlet pipeline of the liquid inlet pipe; sealing liquid is injected from the liquid inlet pipe to the U-shaped pipeline, so that the inverted oil smoke in the exhaust manifold can be prevented from entering the exhaust pipe of the range hood;

the liquid discharge pipe is arranged at the bottom of the U-shaped pipeline and is communicated with the inside of the U-shaped pipeline through a liquid discharge end of the U-shaped pipeline, and a liquid discharge valve is arranged on the liquid discharge pipe of the liquid discharge pipe;

the automatic liquid exchange mechanism is respectively and electrically connected with the liquid inlet valve and the liquid outlet valve, and the U-shaped pipeline can execute automatic liquid outlet and automatic liquid inlet under the control of the automatic liquid exchange mechanism.

Preferably, a first liquid level sensor, a second liquid level sensor and a third liquid level sensor are further arranged in the U-shaped pipeline;

the first liquid level sensor is arranged on the outer wall of the exhaust end of the U-shaped pipeline and is used for monitoring the liquid inlet level in the U-shaped pipeline;

the second liquid level sensor is arranged at the outer bottom of the U-shaped pipeline and is used for monitoring whether liquid exists in the U-shaped pipeline or not;

the third liquid level sensor is arranged on the outer wall of the air inlet end of the U-shaped pipeline and is used for monitoring the highest limit of the liquid level in the U-shaped pipeline.

Preferably, the automatic liquid changing mechanism is a timer.

In a second aspect, the embodiment of the invention provides an anti-reverse oil smoke system, which comprises an automatic liquid changing module, a control module and the anti-reverse oil smoke device,

the oil fume pouring prevention device is respectively connected with the range hood and the exhaust manifold and is used for preventing the oil fume pouring of the exhaust manifold from entering the range hood through liquid discharge and liquid inlet of the U-shaped pipeline;

the automatic liquid changing module is used for setting an automatic liquid changing time point and controlling the U-shaped pipeline to execute automatic liquid discharging and automatic liquid feeding according to the automatic liquid changing time point;

the control module is respectively connected with the automatic liquid changing module, the liquid discharging valve and the liquid inlet valve of the oil smoke pouring prevention device and is used for controlling the oil smoke pouring prevention device to work.

Preferably, the anti-falling oil smoke system further comprises an anti-freezing module and an alarm module;

the anti-freezing module comprises an anti-freezing button, the anti-freezing button is connected with the control module, and the anti-freezing button is used for inputting an anti-freezing instruction to the control module;

the control module is used for controlling liquid inlet and liquid discharge of the U-shaped pipeline according to the anti-freezing instruction;

the control module is also used for outputting an alarm instruction to the alarm module;

the alarm module is connected with the control module and used for executing alarm actions according to alarm instructions of the control module.

In a third aspect, an embodiment of the present invention provides a control method of an anti-reverse oil smoke device, where the anti-reverse oil smoke system as described above is applied, including the following steps:

in the working state of the oil smoke machine, monitoring whether liquid exists in the U-shaped pipeline in real time;

if the liquid is detected, controlling the U-shaped pipeline to perform liquid discharge operation until the liquid of the U-shaped pipeline is discharged;

in the non-working state of the range hood

And the U-shaped pipeline performs fluid replacement operation until the liquid level in the U-shaped pipeline reaches a first preset liquid level.

Preferably, the method further comprises:

when the set automatic liquid changing time point is reached, controlling the U-shaped pipeline to execute liquid discharging operation, and then controlling the U-shaped pipeline to execute liquid supplementing operation; the automatic liquid changing time point is in a time period of the non-working state of the range hood.

Preferably, in the state that the range hood does not work, monitoring the liquid level in the U-shaped pipeline in real time, and executing liquid supplementing operation in the U-shaped pipeline under the condition that the liquid level in the U-shaped pipeline is lower than a first preset liquid level until the liquid level in the U-shaped pipeline reaches the first preset liquid level; wherein the first preset liquid level is arranged at the exhaust end of the U-shaped pipeline.

Preferably, the liquid level in the U-shaped pipeline is monitored in real time, and when the liquid level in the U-shaped pipeline is greater than or equal to a second preset liquid level, the U-shaped pipeline is controlled to perform liquid draining operation until the liquid level in the U-shaped pipeline is smaller than the second preset liquid level; the second preset liquid level is arranged at the air inlet end of the U-shaped pipeline, and the level of the second preset liquid level is higher than that of the first preset liquid level.

Preferably, judging the state of the anti-freezing button in the non-working state of the range hood;

when the antifreezing button is determined to be in a closed state, the U-shaped pipeline is controlled to execute liquid draining operation and then liquid supplementing operation.

The reverse-oil-fume prevention device is characterized in that a U-shaped pipeline is designed to be connected with the oil fume exhauster and the oil fume main exhaust pipe, and the U-shaped pipeline is sealed by liquid, so that reverse-oil fume can be effectively prevented from flowing back to a kitchen; the device for preventing the oil smoke from falling is also provided with an automatic liquid changing mechanism, so that the environment is prevented from being polluted due to the deterioration of liquid in the U-shaped pipeline when the range hood is not used for a long time.

Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. In the drawings:

fig. 1 is a schematic structural diagram of an anti-reverse smoke device provided in embodiment 1 of the present invention;

fig. 2 is a topological diagram of an anti-reverse smoke system provided in embodiment 1 of the present invention.

Description of the reference numerals

The device comprises a 1-U-shaped pipeline, a 2-liquid inlet pipe, a 3-liquid outlet pipe, a 4-liquid inlet valve, a 5-liquid outlet valve, a 6-first liquid level sensor, a 7-second liquid level sensor and an 8-third liquid level sensor.

Detailed Description

The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.

In the embodiments of the present invention, unless otherwise indicated, terms such as "upper, lower, left, and right" and "upper, lower, left, and right" are used generally referring to directions or positional relationships based on those shown in the drawings, or those conventionally used in the use of the inventive products. The terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

The terms "parallel", "perpendicular", and the like do not denote that the components are required to be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel than "perpendicular" and does not mean that the structures must be perfectly parallel, but may be slightly tilted.

The terms "horizontal", "vertical", "overhang" and the like do not denote that the component is required to be absolutely horizontal, vertical or overhang, but may be slightly inclined. For example "level" simply means that its direction is more level than "vertical" and does not mean that the structure must be completely level, but may be slightly tilted.

Furthermore, the terms "substantially," "essentially," and the like, are intended to be limited to the precise form disclosed herein and are not necessarily intended to be limiting. For example: the term "substantially equal" does not merely mean absolute equal, but is difficult to achieve absolute equal during actual production and operation, and generally has a certain deviation. Thus, in addition to absolute equality, "approximately equal to" includes the above-described case where there is a certain deviation. In other cases, the terms "substantially", "essentially" and the like are used in a similar manner to those described above unless otherwise indicated.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

"connected" as used herein means electrically powered or signal connected between two components; "connected" may be a direct connection between two elements, or may be connected via an intermediate medium (e.g., a wire), or may be an indirect connection via a third element.

"signal connection" as used herein is intended to mean a signal connection between two components, such as a control signal and a feedback signal; the term "electrically connected" is used to describe an electrical power connection between two components; the "connection" may be a direct connection between two elements or an indirect connection through a third element.

Example 1

Referring to fig. 1, in a first aspect, an embodiment of the present invention provides an anti-reverse smoke device, including:

the exhaust pipe of the range hood is connected with the air inlet end of the U-shaped pipeline 1, and the exhaust end of the U-shaped pipeline 1 is connected with an exhaust main pipe;

the liquid inlet pipe 2 is arranged at the bottom of the U-shaped pipeline 1 and is communicated with the inside of the U-shaped pipeline 1 through a liquid inlet end of the U-shaped pipeline 1, and a liquid inlet valve 4 is arranged on a liquid inlet pipeline of the liquid inlet pipe 2; the sealing liquid is injected into the U-shaped pipeline 1 from the liquid inlet pipe 2, so that the inverted oil smoke in the exhaust manifold can be prevented from entering the exhaust pipe of the range hood;

the liquid discharge pipe 3 is arranged at the bottom of the U-shaped pipeline 1 and is communicated with the inside of the U-shaped pipeline 1 through a liquid discharge end of the U-shaped pipeline 1, and a liquid discharge valve 5 is arranged on a liquid discharge pipeline of the liquid discharge pipe 3;

the automatic liquid exchange mechanism is respectively and electrically connected with the liquid inlet valve 4 and the liquid outlet valve 5, and the U-shaped pipeline 1 can execute automatic liquid outlet and automatic liquid inlet under the control of the automatic liquid exchange mechanism.

Specifically, when the range hood works, the range hood discharges kitchen oil smoke to an oil smoke total exhaust pipe of a corridor through the U-shaped pipeline 1; when the range hood does not work, liquid is injected into the U-shaped pipeline 1, and the oil smoke in the oil smoke main exhaust pipe is prevented from being poured back to the range hood in a liquid sealing mode.

The liquid inlet pipe 2 is arranged, so that liquid supplementing of the U-shaped pipeline 1 can be realized to form sealing. When the U-shaped pipeline 1 is filled with liquid to form a seal, the liquid level at the water inlet end of the U-shaped pipeline 1 is higher than the liquid level at the air outlet end due to the pressure influence of the oil smoke total air outlet pipe, so that a liquid level difference is formed.

The arrangement of the liquid discharge pipe 3 can realize the liquid discharge of the U-shaped pipeline 1 so as to ensure that the range hood works normally.

The automatic liquid changing mechanism is used for automatically discharging liquid and feeding liquid; specifically, in this embodiment, the automatic liquid changing mechanism includes a controller and a timer, and the controller is electrically connected to the liquid inlet valve 4, the liquid outlet valve 5 and the timer respectively; the controller is used for controlling the opening and closing of the liquid inlet valve 4 or the liquid outlet valve 5, and the timer is used for timing. The automatic liquid change time point is set through the timer, when the automatic liquid change time point is reached, the controller controls the liquid discharge valve 5 to be opened, liquid in the U-shaped pipeline 1 is discharged, then the controller controls the liquid inlet valve 4 to be opened, the liquid enters the U-shaped pipeline 1 through the liquid inlet pipe 2 to achieve the purpose of liquid supplementing of the U-shaped pipeline 1, and then the function of automatic liquid change is realized.

In this embodiment, one end of the liquid inlet pipe 2 is connected to a domestic tap water pipe, and one end of the liquid discharge valve 5 is connected to a sewer.

In this embodiment, the U-shaped pipe 1 is further provided with a first liquid level sensor 6, a second liquid level sensor 7 and a third liquid level sensor 8;

the first liquid level sensor 6 is arranged on the outer wall of the exhaust end of the U-shaped pipeline 1, and the first liquid level sensor 6 is used for monitoring the liquid inlet level in the U-shaped pipeline 1;

the second liquid level sensor 7 is arranged at the outer bottom of the U-shaped pipeline 1, and the second liquid level sensor 7 is used for monitoring whether liquid exists in the U-shaped pipeline 1;

the third liquid level sensor 8 is arranged on the outer wall of the air inlet end of the U-shaped pipeline 1, and the third liquid level sensor 8 is used for monitoring the highest limit of the liquid level in the U-shaped pipeline 1.

Specifically, the first liquid level sensor 6 is used for monitoring the water inlet liquid level in the U-shaped pipeline 1. On the one hand, the liquid supplementing limiting effect is achieved, and the first liquid level sensor 6 is arranged at the height of the U-shaped pipeline 1, which meets the sealing effect. When the liquid in the U-shaped pipeline 1 reaches the height which can be monitored by the first liquid level sensor 6, the purpose of forming a water seal is met, and then the water addition can be stopped; on the other hand, the arrangement of the first liquid level sensor 6 can also play a role in resisting the pressure of the reverse oil smoke, and specifically comprises the following steps: when the U-shaped pipeline 1 is filled with liquid to form a seal, the pressure at two sides of the U-shaped pipeline 1 is balanced, but once the number of households using the range hood in a residential building is increased, the reverse oil smoke pressure at the side of the oil smoke main exhaust pipeline is increased, the liquid level at the exhaust end of the U-shaped pipeline 1 can be reduced under the influence of the pressure, and the sealing effect is influenced; therefore, when the liquid level is lower than the monitoring value of the first liquid level sensor 6, the liquid is replenished into the U-shaped pipeline 1, and at the moment, because of the influence of the pressure of the oil smoke total exhaust pipeline, newly-increased liquid flows to the air inlet end of the U-shaped pipeline 1, the liquid level difference between the liquid level at the air inlet end and the liquid level at the exhaust end gradually increases, namely the water level pressure difference gradually increases until the new balance is reached, and the pressure of the inverted oil smoke from the oil smoke total exhaust pipeline is resisted.

The second liquid level sensor 7 is arranged at the bottom of the U-shaped pipeline 1 and is used for monitoring whether liquid exists in the U-shaped pipeline 1. When the U-shaped pipeline 1 discharges the liquid completely, the range hood can reach 100% smoothness, so that the range hood can be normally used.

The third liquid level sensor 8 is arranged on the outer wall of the air inlet end of the U-shaped pipeline 1, so that the excessive liquid level is prevented from entering the range hood, and the range hood is prevented from being damaged. When the third level sensor 8 detects the liquid level, it indicates that the liquid in the U-shaped pipe 1 has reached the ceiling, which needs to be discharged to achieve the effect of lowering the liquid level. Further, when the liquid in the U-shaped pipeline 1 reaches the highest limit, an alarm is sent to a user through an alarm to remind the user to discharge the liquid in the U-shaped pipeline 1 to check the system.

In this embodiment, the automatic liquid changing mechanism is a timer.

In this embodiment, a communicating pipe 9 is disposed at the bottom of the U-shaped pipe 1, the U-shaped pipe 1 is connected to the liquid inlet pipe 2 and the liquid outlet pipe 3 through the communicating pipe 9, the liquid inlet valve 4 is disposed between the communicating pipe 9 and the liquid inlet pipe 2, and the liquid outlet valve 5 is disposed between the communicating pipe 9 and the liquid outlet pipe 3, and the liquid inlet valve 4 and the liquid outlet valve 5 are all electric ball valves. Specifically, the communicating pipe 9 is used for communicating the liquid inlet pipe 2 and the liquid outlet pipe 3, and one communicating pipe 9 is connected with the U-shaped pipeline 1 and then connected with the liquid inlet pipe 2 and the liquid outlet pipe 3.

When being equipped with communicating pipe 9, second level sensor 7 locates communicating pipe 9 and is close to the tip of U type pipeline 1, because U type pipeline 1 and communicating pipe 9 intercommunication, so only need install second level sensor 7 in communicating pipe 9's tip, whether still have the existence of liquid in the U type pipeline 1 that can be more accurate monitoring.

In particular, the air inlet end of the U-shaped duct 1 should be high enough to prevent liquid from entering the range hood on the one hand and to resist the reverse pressure of the cooking fumes from the fume exhaust manifold on the other hand.

Referring to fig. 2, in a second aspect, an embodiment of the present invention provides an anti-reverse smoke system, which includes an automatic liquid exchange module, a control module and an anti-reverse smoke device as described above,

the inverted oil fume discharging device is respectively connected with the oil fume exhauster and the exhaust manifold and is used for preventing inverted oil fume of the exhaust manifold from entering the oil fume exhauster through liquid discharging and liquid feeding of the U-shaped pipeline 1;

the automatic liquid changing module is used for setting an automatic liquid changing time point and controlling the U-shaped pipeline 1 to execute automatic liquid discharging and automatic liquid feeding according to the automatic liquid changing time point;

the control module is respectively connected with the automatic liquid changing module, the liquid discharging valve 5 and the liquid inlet valve 4 of the oil smoke pouring prevention device and is used for controlling the oil smoke pouring prevention device to work.

Specifically, the control module is electrically connected with the first liquid level sensor 6, the second liquid level sensor 7, the third liquid level sensor 8, the liquid discharge valve 5 and the liquid inlet valve 4 respectively.

When the range hood works, namely the U-shaped pipeline 1 does not need to be filled with liquid:

the control module receives a monitoring signal of the second liquid level sensor 7, if the second liquid level sensor 7 monitors that the liquid level exists, a liquid draining instruction is sent to the control module, the control module controls the liquid draining valve 5 to be opened, and liquid in the U-shaped pipeline 1 is drained; and the control module controls the liquid inlet valve 4 to be closed, so that liquid is prevented from flowing into the U-shaped pipeline 1 from the liquid inlet valve 4.

When the range hood is not in operation, the U-shaped pipeline 1 needs to be filled with liquid to form a water seal:

the control module controls the liquid inlet valve 4 to be opened, sealing liquid is injected into the U-shaped pipeline 1, the first liquid level sensor 6 monitors the liquid level condition at the moment, when the liquid level is monitored, a signal is sent to the control module, the control module closes the liquid inlet valve 4, and the liquid injection flow is finished.

When the third liquid level sensor 8 monitors the liquid level at any time, a signal is sent to the control module, the control module opens the liquid discharge valve 5 to discharge the liquid in the U-shaped pipeline 1, and the liquid in the U-shaped pipeline 1 is prevented from entering the range hood to cause damage to the range hood.

The control module is further connected with the automatic liquid exchange mechanism and is used for receiving a liquid exchange instruction of the automatic liquid exchange structure, when the liquid exchange instruction reaches an automatic liquid exchange time point set by the automatic liquid exchange mechanism, the automatic liquid exchange mechanism sends the liquid exchange instruction to the control module, the control module controls the liquid discharge valve 5 to be opened, liquid is discharged from the U-shaped pipeline 1, after the second liquid level sensor 7 monitors that the liquid in the U-shaped pipeline 1 is discharged completely, the control module controls the liquid discharge valve 5 to be closed, the liquid inlet valve 4 is opened, and the liquid enters the U-shaped pipeline 1 from the liquid inlet pipe 2.

In this embodiment, the anti-tilting oil smoke system further includes an anti-freezing module and an alarm module;

the anti-freezing module comprises an anti-freezing button, the anti-freezing button is connected with the control module, the anti-freezing button is used for inputting an anti-freezing instruction to the control module, and the control module executes the anti-freezing instruction to control liquid inlet and liquid discharge of the U-shaped pipeline 1.

Specifically, the anti-freezing function can be used according to the requirement, when a user uses the anti-freezing capability, the anti-freezing button is pressed down, the control module receives an instruction for starting the anti-freezing button, and the anti-freezing action is circularly executed;

the specific antifreezing action is as follows:

A. when the first liquid level sensor 6 detects the liquid level, the control module firstly opens the liquid discharge valve 5 to discharge liquid;

B. when the first liquid level sensor 6 cannot monitor the liquid level, the control module controls the liquid discharge valve 5 to be closed, the liquid inlet valve 4 is opened, and the U-shaped pipeline 1 is used for supplementing liquid until the first liquid level sensor 6 monitors the liquid level again, so that the circulation of liquid discharge and liquid supplement is realized.

It is noted that the action of the liquid discharge valve 5 and the liquid inlet valve 4 has a certain time delay, and a certain time is reserved between the opening and the complete opening, and a certain time is reserved between the closing and the complete closing, so that when the liquid discharge valve 5 is in the process of opening, complete opening, closing and complete closing and the liquid inlet valve 4 is in the process of opening, complete opening, closing and complete closing, a certain liquid level difference can be formed, and the effect of liquid flowing in the U-shaped pipeline 1 is achieved; thereby realizing the flow of liquid in the U-shaped pipeline 1 and achieving the anti-freezing effect.

In other embodiments of the present invention, other thermal measures may be taken with respect to the U-shaped tube to achieve the freeze protection function, including, but not limited to, applying a thermal coating, externally provided thermal sleeves, and the like.

The alarm module is connected with the control module and is used for receiving the alarm instruction of the control module and executing alarm action.

In a third aspect, an embodiment of the present invention provides a control method of an anti-reverse oil smoke device, where the anti-reverse oil smoke system as described above is applied, including the following steps:

when the range hood works, the range hood specifically comprises:

monitoring whether liquid exists in the U-shaped pipeline 1, and if the liquid exists in the U-shaped pipeline 1, discharging the liquid in the U-shaped pipeline 1;

the second liquid level sensor 7 monitors the liquid level in the U-shaped pipeline 1, when the second liquid level sensor 7 monitors the liquid level, the U-shaped pipeline 1 is indicated to have liquid, then the second liquid level sensor 7 sends a second liquid level monitoring signal to the control module, and the control module controls the liquid discharge valve 5 to be opened according to the monitoring signal, and then liquid is discharged.

When the second liquid level sensor 7 does not monitor the liquid level, it indicates that no liquid exists in the U-shaped pipeline 1, and the second liquid level sensor 7 does not send a monitoring signal to the control module, and the liquid discharge valve 5 does not act.

When the range hood does not work, the range hood specifically comprises:

the U-shaped pipeline 1 is subjected to liquid supplementing, and liquid enters the U-shaped pipeline 1 until the liquid in the U-shaped pipeline 1 reaches a first preset liquid level;

the control module controls the liquid inlet valve 4 to be opened, and the U-shaped pipeline 1 is used for supplementing liquid through the liquid inlet valve 4.

The first liquid level sensor 6 monitors the liquid level in the U-shaped pipeline 1, and when the first liquid level sensor 6 does not monitor the liquid level, the control module still controls the liquid inlet valve 4 to be continuously opened; when the first liquid level sensor 6 monitors the liquid level, the first liquid level sensor 6 sends a first liquid level monitoring signal to the controller, and the control module controls the liquid inlet valve 4 to be closed.

In this embodiment, when the automatic liquid changing function is used, an automatic liquid changing time point is set, and when the automatic liquid changing time point is reached, the liquid discharge of the U-shaped pipeline 1 is controlled first, and then the liquid supplementing is performed on the U-shaped pipeline 1.

The automatic liquid change time point is set through the timer, when the automatic liquid change time point is reached, the controller controls the liquid discharge valve 5 to open, liquid in the U-shaped pipeline 1 is discharged completely, until the second liquid level sensor 7 cannot monitor the liquid level, the control module controls the liquid discharge valve 5 to be closed and the liquid inlet valve 4 to be opened, and until the first liquid level sensor 6 monitors the liquid level signal, the control module controls the liquid inlet valve 4 to be closed.

In this embodiment, when the range hood is not in operation, the liquid level is monitored at all times, and if the liquid level is lower than a first preset liquid level, the liquid is added into the U-shaped pipeline 1, and the first preset liquid level is arranged at the exhaust end of the U-shaped pipeline 1. The method can realize the synchronous gain of the back pressure resistance and the back pressure resistance of the U-shaped pipeline 1, namely the pressure for resisting the reverse oil smoke. The method comprises the following steps: when the U-shaped pipeline 1 is filled with liquid to form a seal, the pressure at two sides of the U-shaped pipeline 1 is balanced, but once the number of households using the range hood in a residential building is increased, the reverse oil smoke pressure at the side of the oil smoke main exhaust pipeline is increased, the liquid level at the exhaust end of the U-shaped pipeline 1 can be reduced under the influence of the pressure, and the sealing effect is influenced; therefore, when the liquid level is lower than the monitoring value of the first liquid level sensor 6, the liquid is replenished into the U-shaped pipeline 1, and at the moment, because of the influence of the pressure of the oil smoke total exhaust pipeline, newly-increased liquid flows to the air inlet end of the U-shaped pipeline 1, the liquid level difference between the liquid level at the air inlet end and the liquid level at the exhaust end gradually increases, namely the water level pressure difference gradually increases until the new balance is reached, and the pressure of the inverted oil smoke from the oil smoke total exhaust pipeline is resisted.

In this embodiment, the liquid level is monitored constantly, when the liquid level is greater than or equal to a second preset liquid level, the control module sends an alarm command and simultaneously controls the U-shaped pipeline 1 to drain liquid until the liquid level is less than the second preset liquid level, the second preset liquid level is higher than the first preset liquid level, and the second preset liquid level is arranged at the air inlet end of the U-shaped pipeline 1.

In this embodiment, when the range hood is not in operation, the state of the antifreeze button is determined, and when the antifreeze button is in the closed state, the U-shaped pipe 1 performs the liquid replenishing and discharging operations.

In this embodiment, when the range hood is not working for a long time, the automatic liquid changing mechanism can be used for setting an automatic liquid changing time point, and the automatic liquid changing of the U-shaped pipeline 1 is controlled according to the automatic liquid changing time point, so that the influence of the deterioration of the liquid in the U-shaped pipeline 1 on the environment is prevented.

The foregoing details of the optional implementation of the embodiment of the present invention have been described in detail with reference to the accompanying drawings, but the embodiment of the present invention is not limited to the specific details of the foregoing implementation, and various simple modifications may be made to the technical solution of the embodiment of the present invention within the scope of the technical concept of the embodiment of the present invention, and these simple modifications all fall within the protection scope of the embodiment of the present invention.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, various possible combinations of embodiments of the present invention are not described in detail.

Those skilled in the art will appreciate that all or part of the steps in implementing the methods of the embodiments described above may be implemented by a program stored in a storage medium, including instructions for causing a single-chip microcomputer, chip or processor (processor) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In addition, any combination of various embodiments of the present invention may be performed, so long as the concept of the embodiments of the present invention is not violated, and the disclosure of the embodiments of the present invention should also be considered.

Claims (10)

1. An anti-tipping smoke device, comprising:

the exhaust pipe comprises a U-shaped pipeline (1), wherein the air inlet end of the U-shaped pipeline (1) is connected with an exhaust pipe of the range hood, and the exhaust end of the U-shaped pipeline (1) is connected with an exhaust manifold;

the liquid inlet pipe (2) is arranged at the bottom of the U-shaped pipeline (1) and is communicated with the inside of the U-shaped pipeline (1) through a liquid inlet end of the U-shaped pipeline (1), and a liquid inlet valve (4) is arranged on a liquid inlet pipeline of the liquid inlet pipe (2); injecting sealing liquid from the liquid inlet pipe (2) into the U-shaped pipeline (1) to prevent the reverse oil smoke in the exhaust manifold from entering the exhaust pipe of the range hood;

the liquid discharge pipe (3) is arranged at the bottom of the U-shaped pipeline (1) and is communicated with the inside of the U-shaped pipeline (1) through a liquid discharge end of the U-shaped pipeline (1), and a liquid discharge valve (5) is arranged on the liquid discharge pipe of the liquid discharge pipe (3);

the automatic liquid changing mechanism is respectively and electrically connected with the liquid inlet valve (4) and the liquid outlet valve (5), and the U-shaped pipeline (1) can execute automatic liquid outlet and automatic liquid inlet under the control of the automatic liquid changing mechanism.

2. The reverse lampblack prevention device according to claim 1, characterized in that a first liquid level sensor (6), a second liquid level sensor (7) and a third liquid level sensor (8) are also arranged in the U-shaped pipeline (1);

the first liquid level sensor (6) is arranged on the outer wall of the exhaust end of the U-shaped pipeline (1), and the first liquid level sensor (6) is used for monitoring the liquid inlet level in the U-shaped pipeline (1);

the second liquid level sensor (7) is arranged at the outer bottom of the U-shaped pipeline (1), and the second liquid level sensor (7) is used for monitoring whether liquid exists in the U-shaped pipeline (1);

the third liquid level sensor (8) is arranged on the outer wall of the air inlet end of the U-shaped pipeline (1), and the third liquid level sensor (8) is used for monitoring the highest limit of the liquid level in the U-shaped pipeline (1).

3. The anti-reverse smoke device according to claim 2, wherein the automatic liquid changing mechanism is a timer.

4. An anti-reverse lampblack system, which is characterized by comprising an automatic liquid changing module, a control module and the anti-reverse lampblack device of any one of claims 1-3;

the oil fume pouring prevention device is respectively connected with the range hood and the exhaust manifold and is used for preventing the oil fume pouring of the exhaust manifold from entering the range hood through liquid discharge and liquid inlet of the U-shaped pipeline (1);

the automatic liquid changing module is used for setting an automatic liquid changing time point and controlling the U-shaped pipeline (1) to execute automatic liquid discharging and automatic liquid feeding according to the automatic liquid changing time point;

the control module is respectively connected with the automatic liquid changing module, a liquid discharging valve (5) and a liquid inlet valve (4) of the oil smoke preventing device and is used for controlling the oil smoke preventing device to work.

5. The anti-reverse smoke system of claim 4, further comprising an anti-freeze module and an alarm module;

the anti-freezing module comprises an anti-freezing button, the anti-freezing button is connected with the control module, and the anti-freezing button is used for inputting an anti-freezing instruction to the control module;

the control module is used for controlling liquid inlet and liquid discharge of the U-shaped pipeline (1) according to the anti-freezing instruction;

the control module is also used for outputting an alarm instruction to the alarm module;

the alarm module is connected with the control module and used for executing alarm actions according to alarm instructions of the control module.

6. A control method of an anti-reverse smoke device, which is executed by the anti-reverse smoke system according to any one of claims 4 to 5, and is characterized by comprising the steps of:

in the working state of the oil smoke machine, monitoring whether liquid exists in the U-shaped pipeline (1) in real time;

if the liquid is detected, controlling the U-shaped pipeline (1) to perform liquid discharge operation until the liquid of the U-shaped pipeline (1) is discharged;

in the non-working state of the range hood

And the U-shaped pipeline (1) performs fluid replacement operation until the liquid level in the U-shaped pipeline (1) reaches a first preset liquid level.

7. The control method of the reverse smoke preventing device according to claim 6, further comprising:

when the set automatic liquid changing time point is reached, controlling the U-shaped pipeline (1) to execute liquid discharging operation, and then controlling the U-shaped pipeline (1) to execute liquid supplementing operation; the automatic liquid changing time point is in a time period of the non-working state of the range hood.

8. The control method of the reverse smoke prevention device according to claim 6, wherein in the non-working state of the smoke ventilator, the liquid level in the U-shaped pipeline (1) is monitored in real time, and in the case that the liquid level in the U-shaped pipeline (1) is lower than a first preset liquid level, the U-shaped pipeline (1) is controlled to perform liquid supplementing operation until the liquid level in the U-shaped pipeline (1) reaches the first preset liquid level; wherein, the first preset liquid level is arranged at the exhaust end of the U-shaped pipeline (1).

9. The control method of the reverse smoke prevention device according to claim 8, wherein the liquid level in the U-shaped pipeline (1) is monitored in real time, and the U-shaped pipeline (1) is controlled to perform liquid discharge operation until the liquid level in the U-shaped pipeline (1) is smaller than a second preset liquid level under the condition that the liquid level in the U-shaped pipeline (1) is larger than or equal to the second preset liquid level; the second preset liquid level is higher than the first preset liquid level, and the second preset liquid level is arranged at the air inlet end of the U-shaped pipeline (1).

10. The control method of the reverse smoke preventing device according to claim 6, wherein the antifreeze button state is judged in a state where the range hood is not operated;

when the antifreezing button is determined to be in a closed state, the U-shaped pipeline (1) is controlled to perform liquid draining operation and then liquid supplementing operation.

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