CN109209959A

CN109209959A - Kitchen ventilator and its series connection blower fan system, control method and connector, blower fan system

Info

Publication number: CN109209959A
Application number: CN201710549457.1A
Authority: CN
Inventors: 施必德; 杨磊
Original assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Electrical Appliances Jiangsu Co Ltd; BSH Hausgeraete GmbH
Priority date: 2017-07-06
Filing date: 2017-07-06
Publication date: 2019-01-15
Anticipated expiration: 2037-07-06
Also published as: CN109209959B

Abstract

A kind of kitchen ventilator and its connect blower fan system, control method and connector, blower fan system, the series connection blower fan system for kitchen ventilator includes: the first blower；Second blower；Connector, the both ends of connector are separately connected the outlet air end of the first blower and the air intake of the second blower；Connector includes control switch, for detecting the characteristic of fluid of the test point in connector, and according to the working condition of characteristic of fluid the second blower of control, so that the second blower is opened with the opening of the first blower, and is closed with the closing of the first blower；Connector further includes aditus laryngis, and the opening section size of aditus laryngis is less than the opening section size at other positions in connector, and test point is between aditus laryngis and the outlet air end of the first blower.The technical solution provided through the invention can simplify the mounting means of the second blower under the premise of not changing the first blower, and two blowers being capable of linkage work, additionally it is possible to effectively improve the working efficiency of entire series connection blower fan system.

Description

Kitchen ventilator and its series connection blower fan system, control method and connector, blower fan system

Technical field

The present invention relates to household appliance technical fields, more particularly to a kind of kitchen ventilator and its series connection blower fan system, control method And connector, blower fan system.

Background technique

Wind pressure and exhaust air rate largely determine one as the two big key indexes for measuring a kitchen ventilator performance Can money kitchen ventilator be liked for masses.This causes kitchen ventilator manufacturer when designing a kitchen ventilator, can make wind pressure and exhaust air rate For two restricted publication of international news and commentary entitled factors of design, it is desirable to which the blower fan system that final design is completed can have biggish wind pressure, also, in wind pressure In the case where determination, there is biggish exhaust air rate.

In order to increase wind pressure, a kind of existing technical solution is that two fans in series get up to be placed on oil smoke as a whole In machine.But existing series connection blower fan system to the switch control of two blowers is realized by circuit connection.Example Such as, two blowers are together in series as a whole, and control the switch of the two blowers simultaneously by master control chip.

Although such scheme can improve the wind pressure of kitchen ventilator to a certain extent, in practical applications, in this way Series connection blower fan system need to do larger change to the circuit structure of kitchen ventilator, the design cycle is long, is unfavorable for promoting on a large scale Using.

Summary of the invention

The technical issues of embodiment of the present invention solves is how to design a kind of series connection blower fan system easy to implement, so that institute Stating multiple blowers that series connection blower fan system includes can be realized linkage work, and then improve the work effect of entire series connection blower fan system Rate.

In order to solve the above technical problems, the present invention provides a kind of series connection blower fan system for kitchen ventilator, which is characterized in that It include: the first blower；Second blower；Connector, the both ends of the connector be separately connected first blower outlet air end and The air intake of second blower, so that the air-flow that the outlet air end of first blower flows out is via described in connector inflow The air intake of second blower；Wherein, the connector includes control switch, for detecting the stream of the test point in the connector Body characteristics, and the working condition of second blower is controlled according to the characteristic of fluid, so that second blower is with described The opening of one blower and open, and closed with the closing of first blower；The connector further includes aditus laryngis, the aditus laryngis Opening section size be less than the connector in other positions opening section size, the test point be located at the aditus laryngis with Between the outlet air end of first blower.

Optionally, the control switch is according to the comparison result control of the characteristic of fluid and default control threshold value described the The working condition of two blowers；Wherein, when the characteristic of fluid is greater than the default control threshold value, the control switch controls institute State the second blower opening；When the characteristic of fluid is less than the default control threshold value, the control switch control described second Blower is closed.

Optionally, the characteristic of fluid of the test point include any one of following element or appoint it is a variety of: static pressure, dynamic pressure, Total pressure, air quantity, flow velocity.

Optionally, the control switch includes: pressure switch, for detecting the static pressure of the test point, and according to described The working condition of second blower described in Static prestressed-pile.

Optionally, the control switch includes: sensor, for acquiring the characteristic of fluid of the test point；Trigger switch, It communicates with the sensor, second blower is controlled with the characteristic of fluid of the test point acquired according to the sensor Working condition.

Optionally, first blower and the second blower share power supply line；Alternatively, first blower and the second blower are each From with independent power supply line.

Optionally, in the connector first position of the opening section size at other positions on the connector to institute State and be gradually reduced between aditus laryngis, the first position on the connector be located at first blower outlet air end and the aditus laryngis it Between.

Optionally, in the connector opening section size at other positions on the aditus laryngis and the connector the Be gradually increased between two positions, the second position on the connector be located at second blower air intake and the aditus laryngis it Between.

Optionally, the opening section size at other positions remains unchanged in the connector.

Optionally, the characteristic of fluid of the test point is absolute fluid feature or fluid relative feature, wherein the phase It is the fluid spy indicated on the basis of the characteristic of fluid outside the connector associated with the test point to characteristic of fluid Sign.

The present invention also provides a kind of kitchen ventilator, including ontology, above-mentioned series connection blower fan system is provided on the ontology.

The present invention also provides a kind of blower fan system, the blower fan system includes blower, and the blower has air intake, described Blower further include: connector, the connector are connected with the air intake of the blower, so that sky of the air-flow from the connector It sets end to flow into, and flows into the air intake of the blower via the connector；Wherein, the connector includes control switch, is used In the characteristic of fluid for detecting the test point in the connector, and control according to the characteristic of fluid work shape of the blower State；The connector further includes aditus laryngis, and the opening section size of the aditus laryngis is less than the opening at other positions in the connector Sectional dimension, the test point is between the aditus laryngis and the vacant end of the connector.

Optionally, the vacant end of the connector is arranged to be suitable for linking in the exhaust port of a kitchen ventilator.

Optionally, in the connector first position of the opening section size at other positions on the connector to institute It states and is gradually reduced between aditus laryngis, the first position on the connector is between the vacant end and the aditus laryngis.

Optionally, in the connector opening section size at other positions between the aditus laryngis and the second position It is gradually increased, the second position on the connector is located between the air intake and the aditus laryngis of the blower.

The present invention also provides a kind of connector for kitchen ventilator, the connector includes: vacant end；Connecting pin；Control Switch, for detecting the characteristic of fluid of the test point in the connector, the switch state of the control switch is by the fluid Feature determines；Aditus laryngis, the opening section size of the aditus laryngis are less than the opening section size at other positions in the connector；Its In, the test point is between the aditus laryngis and vacant end.

Optionally, when the characteristic of fluid of the test point is greater than default control threshold value, the control switch conducting is determined； When the characteristic of fluid of the test point is less than default control threshold value, the control switch shutdown is determined.

The present invention also provides a kind of control method of kitchen ventilator, the kitchen ventilator includes the first blower and the second blower, institute State the first blower and connect with second blower via connector so that the air-flow that flows out of the outlet air end of first blower via The connector flows into the air intake of second blower, and the control method includes: that acquisition defaults in the connector The characteristic of fluid of test point；The working condition of first blower is judged according to the characteristic of fluid of the test point；According to judgement As a result the working condition of second blower is controlled, so that second blower is opened with the opening of first blower, and It is closed with the closing of first blower.

Optionally, the connector includes aditus laryngis, and the opening section size of the aditus laryngis is less than other in the connector The opening section size at position, the test point is between the aditus laryngis and the outlet air end of the first blower.

Optionally, the characteristic of fluid according to the test point judges that the working condition of first blower includes: root The working condition of first blower is judged according to the comparison result of the characteristic of fluid and default control threshold value；Wherein, when described When comparison result shows that the characteristic of fluid is greater than the default control threshold value, judge to determine that first blower is in open shape State；When the comparison result shows that the characteristic of fluid is less than the default control threshold value, judge to determine first blower It is in close state；The working condition for controlling second blower according to judging result includes: when the judging result table Bright first blower in the open state, controls second blower and opens；Otherwise, second blower is controlled to close.

Compared with prior art, technical solution of the present invention has the advantage that

Series connection blower fan system based on the embodiment of the present invention, the first blower and the second wind are connected by connector Machine, so that air-flow can flow into the second blower by the connector after the outflow of the first blower.Further, the connector packet Control switch is included, so as to control the work of the second blower according to the characteristic of fluid of the test point in the connector detected Make state, links so that second blower can be realized with the first blower.It is controlled respectively compared with existing by circuit connection The technical solution of each blower working condition in series connection blower fan system, the technical solution of the embodiment of the present invention can be in the first blower Under the premise of without any changes, the second blower is installed with simpler mounting means, and true by connector and control switch Protect in the series connection blower fan system each blower can linkage work, to preferably improve the wind pressure and exhaust air rate of kitchen ventilator. It will be appreciated by those skilled in the art that since the linkage work of each blower in the series connection blower fan system of the embodiment of the present invention does not pass through Circuit (such as chip) control, in practical application, in the case where the first blower of kitchen ventilator has existed, without to oil smoke Machine is modified, and only need to be connected first blower and the second blower with connector, be can be obtained string described in the embodiment of the present invention Join blower fan system, it is easy to implement, be conducive to promote and apply on a large scale.Further, the connector includes aditus laryngis, the detection Point ensures to detect in the test point between the aditus laryngis and the outlet air end of the first blower, with the blocking by the aditus laryngis To characteristic of fluid tend towards stability so that first blower and the second blower can be realized more accurate linkage work.Into One step, the sectional dimension by reasonably designing the aditus laryngis can be effectively reduced the temperature of each blower in series connection blower fan system It rises, and then improves the working efficiency of entire series connection blower fan system.

Further, the control switch can control institute according to the characteristic of fluid and the comparison result of default control threshold value The working condition of the second blower is stated, more accurately to judge the working condition of first blower, and then according to judging result control The working condition for making the second blower enables second blower to open with the opening of the first blower, and with described The closing of first blower and close.

Further, the characteristic of fluid of the test point includes at least: static pressure, dynamic pressure, total pressure, air quantity, flow velocity.This field skill Art personnel understand that above-mentioned physical quantity has in common that the air-flow mobility status that may be incorporated for measuring in the connector, lead to Cross detect any of these physical quantitys or appoint it is multiple, the control switch can understand the work of first blower in time State (for example, whether first blower opens or closes), and then realize the linkage control to second blower.

Further, the control switch may include pressure switch, correspondingly, the characteristic of fluid can be static pressure, institute The working condition of second blower can be directly controlled according to the static pressure of the test point by stating pressure switch.For example, in reality In, the pressure switch can be arranged on the connector and be connected with the inside of the connector to obtain State the static pressure of test point；Also, the pressure switch can also be connected in series to connection second blower and kitchen ventilator main power source On power supply line, to be done directly the switch control to second blower by the pressure switch.Those skilled in the art's reason Solution, using the series connection blower fan system of the embodiment of the present invention, i.e., no replacement is required the original control chip of kitchen ventilator increases without additional Add the control chip to the second blower, it will be able to realize the linkage work of each blower in the series connection blower fan system, greatly Simplify the installation operation of the second blower.

Further, the control switch can also include sensor and trigger switch, wherein the trigger switch being capable of root The working condition of second blower is controlled according to the characteristic of fluid of the collected test point of the sensor.For example, In practical application, the sensor can be arranged on the connector, to detect the characteristic of fluid of the test point；May be used also With by the trigger switch be connected in series on the power supply line for connecting second blower and kitchen ventilator main power source and with the sensor It communicates, to receive and control the electricity between second blower and kitchen ventilator main power source according to the data that the sensor acquires Break-make situation is flowed, to control the switch of second blower.It will be appreciated by those skilled in the art that using the string of the embodiment of the present invention Join blower fan system, i.e., no replacement is required the original control chip of kitchen ventilator, without the additional control chip increased to the second blower, The linkage work that can be realized as each blower in the series connection blower fan system greatly simplifies the installation behaviour of the second blower Make.

Further, first blower and the second blower can share power supply line, alternatively, the two can also respectively have solely Vertical power supply line, to obtain electric energy from the kitchen ventilator main power source.

Further, in the connector first position of the opening section size at other positions on the connector to institute State and be gradually reduced between aditus laryngis, the first position on the connector be located at first blower outlet air end and the aditus laryngis it Between.Further, in the connector opening section size at other positions on the aditus laryngis and the connector second Be gradually increased between position, the second position on the connector be located at second blower air intake and the aditus laryngis it Between.It will be appreciated by those skilled in the art that the connector designed using the embodiment of the present invention, is conducive to obtain in the test point More stable characteristic of fluid testing result, the as far as possible air-flow in reduction connector flow the influence to testing result, avoid Control switch maloperation.

Further, the opening section size at other positions can also remain unchanged in the connector, so that the string The overall structure for joining blower fan system is more compact, can be adapted to various sizes of kitchen ventilator.

Further, the characteristic of fluid of the test point can be absolute fluid feature or fluid relative feature.Wherein, institute Stating fluid relative feature is the stream indicated on the basis of the characteristic of fluid outside the connector associated with the test point Body characteristics.For example, the pressure switch can control second blower according to the difference of the inside and outside static pressure of the test point Working condition, to improve the identification sensitivity of pressure switch, it is ensured that the pressure switch can in time, accurately identify institute The variation of the first blower working condition is stated, and then controls the second fan linkage work.

Further, the embodiment of the present invention also provides a kind of kitchen ventilator, and the kitchen ventilator includes ontology and above-mentioned series connection wind Machine system, the kitchen ventilator can be improved itself wind pressure and exhaust air rate based on the series connection blower fan system, optimize user's body It tests.

Further, the embodiment of the present invention also provides a kind of blower fan system, and the blower fan system includes above-mentioned blower (i.e. second Blower) and connector.Further, the connector includes above-mentioned control switch and aditus laryngis.It will be appreciated by those skilled in the art that Blower described in the embodiment of the present invention can be used as an individual components and be assembled on existing kitchen ventilator, with the kitchen ventilator Original fans in series forms above-mentioned series connection blower fan system, to increase the wind pressure and exhaust air rate of the kitchen ventilator.Further, exist It is easy to operate without doing any change to the original blower of the kitchen ventilator in assembling process, almost do not have to change the oil smoke The circuit structure of machine is easy to promote and apply on a large scale.

Further, the embodiment of the present invention also provides a kind of connector for kitchen ventilator, the connector include vacant end, Connecting pin, above-mentioned control switch and aditus laryngis.It will be appreciated by those skilled in the art that connector described in the embodiment of the present invention can be used as one A individual components are assembled on existing kitchen ventilator, original two fans in series of the kitchen ventilator are got up, alternatively, institute Stating connector can be used for the original blower of the kitchen ventilator and a newly-increased fans in series, to form above-mentioned string Join blower fan system, increases the wind pressure of the kitchen ventilator and the technical effect of exhaust air rate.Further, without to institute in assembling process It states the original blower of kitchen ventilator and does any change, it is easy to operate, almost do not have to the circuit structure for changing the kitchen ventilator, is easy to big The popularization and application of scale.

Further, the embodiment of the present invention also provides a kind of control method of kitchen ventilator, defaults in the connection by acquisition The characteristic of fluid of test point in part (the first blower and the second blower for the kitchen ventilator of connecting), according to the test point Characteristic of fluid judge the working condition of first blower, and then the work shape of second blower is controlled according to judging result State so that second blower is opened with the opening of first blower, and is closed with the closing of first blower.This Field technical staff understands that the technical solution based on the embodiment of the present invention is not necessarily to be the special circuit control of the second fan design Logic, but the working condition of the second blower can be automatically controlled by identifying the working condition of the first blower, to ensure State two blowers in kitchen ventilator can linkage work, to realize the technical effect of the wind pressure and exhaust air rate that increase kitchen ventilator.

Further, when the comparison result shows that the characteristic of fluid is greater than the default control threshold value, judge to determine First blower is in the open state, and then controls second blower and open；When the comparison result shows the fluid When feature is less than the default control threshold value, judge to determine that first blower is in close state, and then controls described second Blower is closed.It will be appreciated by those skilled in the art that can ensure second blower certainly using the technical solution of the embodiment of the present invention It moves the opening for following first blower and opens, and follow the closing of first blower automatically and close.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of series connection blower fan system for kitchen ventilator of the first embodiment of the present invention；

Fig. 2 is the structural schematic diagram using a kind of connector of the embodiment of the present invention；

Fig. 3 is the structural schematic diagram using the alternative attachment of the embodiment of the present invention；

Fig. 4 is the schematic illustration using a kind of sensor of the embodiment of the present invention；

Fig. 5 is the schematic illustration using another sensor of the embodiment of the present invention；

Fig. 6 is a kind of structural representation of series connection blower fan system for kitchen ventilator of a change case of the embodiment of the present invention Figure；

Fig. 7 is the structural schematic diagram using another connector of the embodiment of the present invention；

Fig. 8 is a kind of schematic illustration of kitchen ventilator of second embodiment of the invention；

Fig. 9 is the schematic illustration of another kitchen ventilator of second embodiment of the invention；

Figure 10 is a kind of structural schematic diagram of blower fan system of third embodiment of the invention；

Figure 11 is a kind of structural schematic diagram of blower fan system of a change case of third embodiment of the invention；

Figure 12 is a kind of connector for kitchen ventilator of fourth embodiment of the invention；

Figure 13 is a kind of flow chart of the control method of kitchen ventilator of fifth embodiment of the invention.

In figure: 62- is used for the series connection blower fan system of kitchen ventilator；The first blower of 1-；The second blower of 2- (or blower)；3- connects Fitting；11- outlet air end；21- air intake；4- control switch；P1- test point；5- aditus laryngis；42- sensor；43- trigger switch； The first position 32-；The second position 33-；6- kitchen ventilator；61- ontology；7- blower fan system；The vacant end 31-；The connecting pin 34-；Air- Air-flow；H1- difference in height；H2- difference in height；12- power supply line；23- power supply line；41- pressure switch.

Specific embodiment

As described in the background art, in existing kitchen ventilator, series connection blower fan system is generallyd use to increase the wind of kitchen ventilator Pressure optimizes user experience preferably to improve the exhaust air rate of kitchen ventilator.

For the existing series connection blower fan system for kitchen ventilator, since the quantity of blower increases, so that manufacturer is in oil While adding blower in smoke machine, it is also necessary to increase a set of corresponding control circuit, with each in control series connection blower fan system The working condition of blower；Alternatively, the selection of Ye You manufacturer redesigns control chip, so that need to only control the control of a blower originally Coremaking piece can control two blowers simultaneously.

But no matter which kind of above-mentioned scheme is used, it requires to do larger improvement, design cycle to the circuit structure of kitchen ventilator It is long, it is unfavorable for promoting and applying on a large scale.

In order to solve the above-mentioned technical problem, the technical solution of the embodiment of the present invention provides a kind of series connection wind for kitchen ventilator Machine system connects the first blower and the second blower by connector, so that air-flow can pass through institute after the outflow of the first blower It states connector and flows into the second blower.Further, the connector includes control switch, so as to according to the company detected The characteristic of fluid of test point in fitting controls the working condition of the second blower, so that second blower can be with the first blower Realize linkage.

It will be appreciated by those skilled in the art that the technical solution of the embodiment of the present invention can be without any changes in the first blower Under the premise of, the second blower is installed with simpler mounting means, and the series connection blower is ensured by connector and control switch In system each blower can linkage work, thus preferably improve kitchen ventilator wind pressure and exhaust air rate.

Further, since the linkage work of each blower in the series connection blower fan system of the embodiment of the present invention is not to pass through electricity Road (such as chip) control, in practical application, in the case where the first blower of kitchen ventilator has existed, without to kitchen ventilator It is modified, only need to connect first blower and the second blower with connector, can be obtained series connection described in the embodiment of the present invention Blower fan system, it is easy to implement, be conducive to promote and apply on a large scale.

Further, the connector includes aditus laryngis, and the test point is located at the outlet air end of the aditus laryngis and the first blower Between, to ensure that the characteristic of fluid detected in the test point tends towards stability by the blocking of the aditus laryngis, so that described the One blower and the second blower can be realized more accurate linkage work.It will be appreciated by those skilled in the art that by reasonably designing The sectional dimension of the aditus laryngis can be effectively reduced the temperature rise of each blower in series connection blower fan system, and then improve entire series connection wind The working efficiency of machine system.

To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention Specific embodiment explain in detail.

Fig. 1 is a kind of structural schematic diagram of series connection blower fan system 62 for kitchen ventilator of the first embodiment of the present invention. Wherein, the series connection blower fan system 62 can increase the wind pressure of the kitchen ventilator by way of at least two blowers of connecting, with Meet the use demand that user obtains bigger exhaust air rate.In order to make it easy to understand, the present embodiment only by taking two blowers of connecting as an example into Row illustrates, but in practical applications, the series connection blower fan system 62 for the kitchen ventilator can also connect, and there are three even More multi fan, those skilled in the art can change more embodiments out according to actual needs, this has no effect on skill of the invention Art content.

Specifically, in the present embodiment, the series connection blower fan system 62 may include the first blower 1；Second blower 2；Even Fitting 3, the both ends of the connector 3 are separately connected the outlet air end 11 of first blower 1 and the air intake of second blower 2 21, so that the air-flow Air that the outlet air end 11 of first blower 1 flows out flows into second blower 2 via the connector 3 Air intake 21.Further, the air-flow Air also flows out the outlet air end 22 of second blower 2 via second blower 2. Wherein, first blower 1 and the second blower 2 can be blower used by the prior art, it will be appreciated by those skilled in the art that this The technical solution of inventive embodiments focuses on how to design a kind of series connection blower fan system easy to implement, can be by kitchen ventilator The smaller change of existing structure obtains the working effect of series connection blower fan system.

More specifically, in conjunction with Fig. 2, the connector 3 can also include control switch 4, for detecting the connector 3 The characteristic of fluid of interior test point P1, and the working condition of second blower 2 is controlled according to the characteristic of fluid, so that described Second blower 2 is opened with the opening of first blower 1, and is closed with the closing of first blower 1.

Further, the connector 3 includes aditus laryngis 5, and the opening section size of the aditus laryngis 5 is less than the connector The opening section size at other positions in 3, the test point P1 is between the aditus laryngis 5 and the outlet air end 11 of the first blower 1.

In a typical application scenarios, the control switch 4 can be according to the characteristic of fluid and default control threshold The comparison result of value controls the working condition of second blower 2.Wherein, the default control threshold value can by user and/or Manufacturer presets.Further, in use, the user can also setting value to the default control threshold value into Row modification.It will be appreciated by those skilled in the art that the control switch 4 can more accurately judge by the default control threshold value The working condition of first blower 1, and then according to the working condition of judging result the second blower 2 of control, so that described second Blower 2 can be opened with the opening of the first blower 1, and be closed with the closing of first blower 1.

For example, the control switch 4 can control described the when the characteristic of fluid is greater than the default control threshold value Two blowers 2 are opened；When the characteristic of fluid is less than the default control threshold value, the control switch 4 can control described the Two blowers 2 are closed.

Further, the default control threshold value can be according to the opening section size of the aditus laryngis 5 and described first Blower 1 and the respective running parameter of the second blower 2 determine.It will be appreciated by those skilled in the art that when first blower 1 is opened, and And when also being opened based on the second blower 2 described in series connection blower fan system 62 described in the present embodiment, due to second blower 2 Swabbing action, the characteristic of fluid such as air pressure of the test point P1 can be declined, and be needed at this time (logical by the characteristic of two blowers The respective running parameter of two blowers is crossed to embody) and the aditus laryngis 5 opening section size, to ensure the test point P1's Characteristic of fluid will not drop to the default control threshold value hereinafter, in order to avoid false triggering because of the swabbing action of second blower 2 The closing of second blower 2, it is ensured that first blower 1 and the second blower 2 are capable of forming stable tandem working environment.It is excellent Selection of land, the running parameter include at least power.

Further, the opening section size of the aditus laryngis 5 is bigger, and the default control threshold value can set smaller； The difference of first blower 1 and the respective running parameter of the second blower 2 is smaller, and what the default control threshold value can be set gets over It is small.Preferably, guarantee first blower 1 open when the second blower 2 can with minimum entry condition united opening, and Two blowers reach steady operational status and first blower 1 closing after opening when, what the second blower 2 simultaneously closed off Under the premise of, the default control threshold value can be level off to zero positive value.Ideally, when first blower 1 and second When the running parameter of blower 2 is identical, theoretically the default control threshold value can be to be set as zero, the corresponding aditus laryngis 5 Sectional dimension can obtain it is bigger.

Further, when first blower 1 and the second blower 2 are opened simultaneously, the opening section size of the aditus laryngis 5 Bigger, the characteristic of fluid of the test point P1 is smaller, it is therefore desirable to design a reasonable opening section ruler to the aditus laryngis 5 It is very little, to ensure that stable tandem working state can be formed with second blower 2 after first blower 1 is opened.

Further, the characteristic of fluid of the test point P1 may include any one of following element or appoint a variety of: quiet Pressure, dynamic pressure, total pressure, air quantity, flow velocity.It will be appreciated by those skilled in the art that having in common that for above-mentioned physical quantity may be incorporated for weighing Measure the air-flow mobility status in the connector 3, by detect any of these physical quantitys or appoint it is multiple, the control is opened The working condition (for example, whether first blower 1 opens or closes) of first blower 1 can be understood in time by closing 4, in turn Realize the linkage control to second blower 2.Alternatively, those skilled in the art can be with base other than above-mentioned characteristic of fluid It determines in the physical quantity that other are used to describe the airflow characteristics such as wind pressure, the air quantity in the connector 3 to second wind The control logic of machine 2.

Further, the characteristic of fluid of the test point P1 can be absolute fluid feature or fluid relative feature, In, the fluid relative feature is on the basis of the characteristic of fluid outside the connector 3 associated with the test point P1 The characteristic of fluid of expression.

In a preferred embodiment, the control switch 4 may include pressure switch 41, for detecting the test point P1's Static pressure, and the working condition of the second blower 2 according to the Static prestressed-pile.Specifically, the pressure switch 41 can be existing Some mechanical pressure switchs, the mechanical pressure switch can be connected according to the inside and outside static pressure difference of the test point P1 or Close the power supply of second blower 2.

For example, the mechanical pressure switch can realize switch motion by built-in spring, wherein the spring Side can be connected with the test point P1, to detect the static pressure in the connector 3 at test point P1, the spring The other side can extend the connector 3 and be connected with atmosphere, to detect atmospheric pressure.Further, the pressure switch 41 one end can connect the power supply line 23 of second blower 2, and the other end of the pressure switch 42 may be coupled to oil smoke In owner's power supply (not shown), when the spring action causes the pressure switch 41 to be closed, the power supply of second blower 2 Line 23 and the kitchen ventilator main power source are connected；When the spring action causes the pressure switch 41 to be opened, second wind The power supply line 23 of machine 2 is disconnected with the kitchen ventilator main power source.

As a non-limiting embodiments, (second blower 2 is still in static at this time after first blower 1 is opened State), air-flow Air enters the connector 3, and by the blocking of the aditus laryngis 5, the static pressure at the test point P1 is risen to Higher than atmospheric pressure, when the static pressure of the test point P1 and the difference of the atmospheric pressure are greater than the default control threshold value (as preset Static pressure threshold value) when, the spring action of the pressure switch 41, to control the power supply line 23 and the oil smoke of second blower 2 Owner's power supply is connected, and is opened so that second blower 2 is powered.

Further, after first blower 1 is closed (at this time second blower 2 still in working condition), air-flow Air The connector 3 is sucked by second blower 2, so that the static pressure at the test point P2 declines, when the test point P1's When the difference of static pressure and the atmospheric pressure is less than (or being equal to) described default static pressure threshold value, the spring of the pressure switch 41 is again Movement, is disconnected with controlling the power supply line 23 of second blower 2 with the kitchen ventilator main power source, so that second blower 2 power-off are closed.

It will be appreciated by those skilled in the art that using the series connection blower fan system 62 of the embodiment of the present invention, i.e., no replacement is required kitchen ventilator Original control chip is to realize the master control to two blowers, without the additional control chip increased to the second blower 2, energy The linkage work for enough realizing each blower in the series connection blower fan system 62 greatly simplifies the installation operation of the second blower 2.

In another preference, in conjunction with Fig. 3, the control switch 4 can also include sensor 42, described for acquiring The characteristic of fluid of test point P1；And trigger switch 43, it communicates with the sensor 42, to be acquired according to the sensor 42 The characteristic of fluid of the test point P1 control the working condition of second blower 2.Wherein, the sensor 42 can be set Inside the connector 3, and the inner wall that against the connector 3 is placed.For example, the sensor 42 can be set in described At the test point P1 in connector 3, more accurately to detect the characteristic of fluid at the test point P1.

Further, the trigger switch 43 can be set outside the connector 3, and communicate with the sensor 42 News, to obtain the collected data of the sensor 42 (characteristic of fluid of the i.e. described test point P1).

Further, similar with above-mentioned pressure switch 41, one end of the trigger switch 43 also can connect described The power supply line 23 of two blowers 2, the other end then may be coupled on the kitchen ventilator main power source, when the trigger switch 43 is closed When, the power supply line 23 of second blower 2 and the kitchen ventilator main power source are connected；It is described when the trigger switch 43 is opened The power supply line 23 of second blower 2 is disconnected with the kitchen ventilator main power source.

As a non-limiting embodiment, (second blower 2 is still at this time after first blower 1 is opened Stationary state), air-flow Air is pushed into the connector 3, the static pressure by the blocking of the aditus laryngis 5, at the test point P1 Rising, the sensor 42 can acquire the static pressure size of the test point P1 in real time and feed back to the trigger switch 43, when When the static pressure of the test point P1 is risen to greater than the default control threshold value (such as default static pressure threshold value), the trigger switch 43 Closure, the power supply line 23 of second blower 2 and the kitchen ventilator main power source are connected, and are opened so that second blower 2 is powered.

Further, after first blower 1 is closed (at this time second blower 2 still in working condition), air-flow Air The connector 3 is sucked by second blower 2, so that the static pressure at the test point P2 declines, when the sensor 42 is adopted When the static pressure of the test point P1 collected is less than (or being equal to) described default static pressure threshold value, the trigger switch 43 is opened, with The power supply line 23 and the kitchen ventilator main power source for controlling second blower 2 disconnect, so that second blower 2 power-off is closed It closes.

Further, when sensor 42 is used to detect the static pressure of the test point P1, the trigger switch 43 can be Electron type pressure switch (not shown), the difference with above-mentioned mechanical pressure switch are that electron type pressure switch is according to The static pressure of the collected test point P1 of sensor 42 determines the movement of the spring, and then controls second blower 2 Working condition.

Further, it can be communicated by way of wired (such as data line) between the sensor 42 and trigger switch 43 News；Alternatively, the two can also be communicated by the mode of wireless (such as bluetooth, WIFI).

In another non-limiting embodiment, the sensor 42 can be also used for detecting the wind of the test point P1 Amount, the trigger switch 43 control the working condition of second blower 2 according to the air force of the test point P1.For example, When the air quantity of the test point P1 is greater than (or being equal to) described default control threshold value (such as default air quantity threshold value), institute can be determined The first blower 1 opening is stated, the trigger switch 43 can control the linkage of the second blower 2 and open；In another example when the detection When the air quantity of point P1 is less than the default control threshold value (such as default air quantity threshold value), it can determine that first blower 1 is closed, institute Stating trigger switch 43 can control the linkage of the second blower 2 closing.

As a change case, institute can also be arranged in a manner of being similar to above-mentioned pressure switch 41 in the sensor 42 It states outside connector 3, and is connected in the test point P1 with the inside of the connector 3, accurately to detect the test point The characteristic of fluid of P1.

For example, can be with reference to the schematic illustration of the sensor 42 shown in Fig. 4, wherein the one of the sensor 42 End can be protruded into inside the connector 3, and the other end can be connected to the tube wall of the connector 3 (to obtain the test point P1 Static pressure).Further, when there is air-flow Air flowing in the connector 3, the sensor 42 can detecte the detection The dynamic pressure of point P1, and the specific value of the dynamic pressure detected to the transmission of 43 (not shown) of trigger switch.It is unrestricted at one In property embodiment, the test point P1 be can be set on the axis of the connector 3, and the sensor 42 can be by described The difference in height h1 that air-flow Air is generated detects the dynamic pressure of the test point P1.

In another example can also be with reference to the schematic illustration of the sensor 42 shown in Fig. 5, wherein the sensor 42 One end can protrude into inside the connector 3, the other end can be communicated with the atmosphere.Further, have when in the connector 3 When air-flow Air flows, the sensor 42 can detecte the total pressure of the test point P1, and (not show in figure to trigger switch 43 The specific value for the total pressure that transmission detects out).In one non-limiting embodiment, the test point P1 can be set in institute On the axis for stating connector 3, the sensor 42 can detect the detection by the difference in height h2 that the air-flow Air is generated The dynamic pressure of point P1.

Further, those skilled in the art can also take other existing schemes to acquire detection in the connector 3 The characteristic of fluid such as static pressure, dynamic pressure, total pressure, air quantity at point P1, this has no effect on technology contents of the invention.

As another change case, the sensor 42 can also be set to opening section size where the test point P1 Section center location, precisely to detect the flow velocity of the test point P1.Further, the axial direction when the sensor 42 and institute State air-flow Air flow direction it is identical when, the sensor 42 can be also used for detecting the dynamic pressure of the test point P1.More into one Step ground, the trigger switch 43 control described the according to the collected data of the sensor 42 (such as described flow velocity and dynamic pressure) The working condition of two blowers 2, specific control logic those skilled in the art can refer to the above-mentioned control based on wind pressure and air quantity Logic processed, it will not be described here.

As another change case, the sensor 42 can also acquire multiple characteristic of fluid of the test point P1 simultaneously (for example, static pressure and air quantity for acquiring the test point P1 simultaneously), when the multiple characteristic of fluid be all larger than it is corresponding pre- If when control threshold, the trigger switch 43 can just control second blower 2 and open；Otherwise, the trigger switch 43 controls Second blower 2 is closed.

Alternatively, multiple sensors 42 can also be arranged inside and outside in the connector 2, to detect the test point P1's respectively Multiple characteristic of fluid (for example, dynamic pressure and flow velocity for detecting the monitoring point P1 respectively by different sensors 42).

Further, first blower 1 and the second blower 2 can share power supply line 23 (as shown in Figure 6), the power supply Line 23 can connect to the kitchen ventilator main power source；Alternatively, first blower 1 and the second blower 2 can also respectively have solely Vertical power supply line (as shown in Figure 1), first blower 1 have independent power supply line 12, and second blower 2 has independent Power supply line 23, the power supply line 12 and power supply line 23 are connected respectively to the kitchen ventilator main power source).

Further, with continued reference to Fig. 2, the opening section size at other positions is in the connector 3 in the connector 3 On first position 32 be gradually reduced between the aditus laryngis 5, the first position 32 on the connector 3 is located at first wind Between the outlet air end 11 and the aditus laryngis 5 of machine 1.It will be appreciated by those skilled in the art that the technical solution of the present embodiment is by the connection The front half section of part 3 is designed as gradually reducing pipeline, with ensure the air pressure in the connector 3 can gather positioned at the aditus laryngis 5 with On test point P1 between the outlet air end 11 of first blower 1, the second wind is controlled so that the present embodiment is based on the first fan linkage The technical solution of machine.

Further, in the connector 3 the opening section size at other positions in the aditus laryngis 5 and the connector 3 On the second position 33 between be gradually increased, the second position 33 on the connector 3 is located at the air intake of second blower 2 Between 21 and the aditus laryngis 5.

It will be appreciated by those skilled in the art that the connector 3 designed using the embodiment of the present invention, is conducive in the detection Point P1 obtains more stable characteristic of fluid testing result, and the air-flow Air in reduction connector 3 as far as possible is flowed to testing result Influence, avoid 4 maloperation of control switch.Further, it the connector 3 is designed as opening section size first reduces to increase afterwards Big form can effectively increase the resistance of pipe network locating for first blower 1, to preferably realize pressurization, can more increase Big flow (alternatively referred to as air quantity).

As a change case, the opening section size at other positions can also be remained unchanged in the connector 3.Example Such as, with reference to Fig. 7, the connector 3 can be designed as AND DEWATERING FOR ORIFICE STRUCTURE, so that the overall structure of the series connection blower fan system 62 is more It is compact, enable preferably adapted to using the series connection blower fan system 62 of the technical solution of the embodiment of the present invention it is various sizes of Kitchen ventilator.

Further, the distance between the test point P1 and the aditus laryngis 5 are according to the opening section size of the aditus laryngis 5 And first blower 1 and the respective running parameter (such as power) of the second blower 2 determine.Preferably, the test point P1 with The distance between the aditus laryngis 5 is closer, using the comparison result of the characteristic of fluid of the test point P1 and default control threshold value as The unlocking condition and closedown condition of second blower 2 are more advantageous；But between the test point P1 and the aditus laryngis 5 away from From can not be too close, otherwise two blowers may cannot be introduced into steady-working state after opening.It is therefore desirable to design a conjunction The distance of reason, to ensure that stable tandem working state can be formed with second blower 2 after first blower 1 is opened.

Further, two wind with different operating parameter (such as power) if the series connection blower fan system 62 has been connected Machine, performance curve when running in conjunction with two fans in series can be with by rationally designing the opening section size of the aditus laryngis 5 Ensure that first blower 1 and the second blower 2 work in reasonable interval (for example, working in the pipe of first blower On the left of the intersection point of net characteristic curve and synthesis pressure curve), so that the respectively motor of two blowers when tandem working be effectively reduced Temperature rise, and improve the working efficiency of entire series connection blower fan system 62.Preferably, in the air draft for ensuring the series connection blower fan system 62 Under the premise of amount, the opening section size of the aditus laryngis 5 is smaller, more can ensure that first blower 1 and the second blower 2 work On the left of the intersection point.

It is possible to further using the biggish blower of running parameter in the series connection blower fan system 62 as first blower 1, using the lesser blower of running parameter as second blower 2, increased with being preferably based on the series connection blower fan system 62 The big wind pressure of kitchen ventilator and the technical effect of exhaust air rate.

It is respective by comprehensively considering first blower 1 and the second blower 2 using the scheme of first embodiment by upper The distance between running parameter, the opening section size of the aditus laryngis 5, the test point P1 and the aditus laryngis 5 and described pre- If these factors of the specific value of control threshold, it is ensured that the series connection blower fan system 62 of final design can be realized multiple wind The linkage work of machine, that is, when first blower 1 is opened, second blower 2 can link opening；When two blowers are equal After unlatching, can steady operation in open state, to realize air draft；After first blower 1 is closed, second blower 2 Also can link closing.

Fig. 8 is a kind of schematic illustration of kitchen ventilator 6 of second embodiment of the invention.Specifically, the kitchen ventilator 6 can be with Including ontology 61.More specifically, above-mentioned Fig. 1 is provided on the ontology 61 to series connection blower fan system 62 shown in Fig. 7.

Further, the placement location that the series connection blower fan system 62 is referred to blower in existing kitchen ventilator is set It sets.For example, can be as shown in figure 8, the series connection blower fan system 62 to be placed on to the inside of the ontology 61 as a whole, with section Save space.

Alternatively, a preferred embodiment as the present embodiment, with reference to Fig. 9, the series connection blower fan system 62 can be with Part is taken to be set to inside the ontology 61, the mode for partially extending the ontology 61 is placed on the kitchen ventilator 6.Example Such as, as shown in figure 9, the kitchen ventilator 6 is original may to be already installed with the first blower 1, in order to increase the wind pressure of the kitchen ventilator And exhaust air rate, connector 3 and the second blower 2 can be connected in the outlet air end 11 of first blower 1, to form the series connection wind Machine system 62.Wherein, the both ends of the connector 3 are separately connected the outlet air end 11 and second blower 2 of first blower 1 Air intake 21 so that air-flow flows out the outlet air end 22 via the connector 3 from the outlet air end 11.

It, can about working principle, the more contents of working method of the series connection blower fan system 62 on the kitchen ventilator 6 With the associated description referring to above-mentioned Fig. 1 into Fig. 7, which is not described herein again.

Figure 10 is a kind of structural schematic diagram of blower fan system 7 of third embodiment of the invention.Specifically, the blower fan system 7 may include blower 2 (i.e. above-mentioned Fig. 1 to the second blower 2 shown in Fig. 7), and the blower 2 has air intake 21 and outlet air end 22。

More specifically, the blower fan system 7 can also include connector 3, the connector 3 and the blower 2 into Wind end 21 is connected, so that air-flow Air is flowed into from the vacant end 31 of the connector 3, and flows into via the connector 3 described The air intake 21 of blower 2.

Further, the connector 3 may include control switch 4, for detecting the test point P1 in the connector 3 Characteristic of fluid, and control according to the characteristic of fluid working condition of the blower 2.

Preferably, the connector 3 can also include aditus laryngis 5, and the opening section size of the aditus laryngis 5 is less than the connection The opening section size at other positions in part 3, the test point P1 are located at the vacant end 31 of the aditus laryngis 5 and the connector 3 Between.

Further, the vacant end 31 of the connector 3 can be set to be suitable for linking in the exhaust end of a kitchen ventilator Mouthful.For example, the vacant end 31 of the connector 3 can be connected to the first blower 1 in above-mentioned Fig. 1 into embodiment illustrated in fig. 7 Outlet air end 11, be set to the series connection blower fan system 62 of kitchen ventilator 6 shown in above-mentioned Fig. 8 or Fig. 9 to obtain.

It will be appreciated by those skilled in the art that in practical applications, the blower 2 can be directly connected to existing kitchen ventilator On blower, series connection blower fan system 62 of the above-mentioned Fig. 1 into embodiment illustrated in fig. 7 is formed.Preferably, the blower 2 can be to insert The mode entered is connected with the blower of the existing kitchen ventilator；Alternatively, the blower of the blower 2 and the existing kitchen ventilator goes out Wind end the other modes such as can also be connected by screw bolts and be attached.

In a preferred embodiment, the opening section size at other positions can be on the connector 3 in the connector 3 First position 32 be gradually reduced between the aditus laryngis 5, wherein the first position 32 on the connector 3 is located at the sky It sets between end 31 and the aditus laryngis 5.

Further, the opening section size at other positions can also be in the aditus laryngis 5 and described the in the connector 3 It is gradually increased between two positions 33, the second position 33 on the connector 3 is located at the air intake 21 and the larynx of the blower 2 Between mouth 5.

In a change case, with reference to Figure 11, the opening section size at other positions can also be kept in the connector 3 It is constant.

Working principle, more contents of working method about the blower fan system 7, are referred to above-mentioned Fig. 1 into Fig. 7 Associated description, which is not described herein again.

By upper, using the scheme of 3rd embodiment, the blower fan system 7 can be used as an individual components and be assembled to On existing kitchen ventilator, to be gone here and there with the original blower of the kitchen ventilator (for example, the first blower 1 described in above-mentioned first embodiment) Connection forms series connection blower fan system 62 described in above-mentioned Fig. 1 to Fig. 7, to increase the wind pressure and exhaust air rate of existing kitchen ventilator.Into one Step ground, using the technical solution of the present embodiment, without doing any change to the original blower of the kitchen ventilator in assembling process, It is easy to operate, almost do not have to the circuit structure for changing existing kitchen ventilator, is easy to promote and apply on a large scale.

Figure 12 is a kind of connector 3 for kitchen ventilator of fourth embodiment of the invention.Specifically, the connector 3 can To include vacant end 31；Connecting pin 34；Control switch 4, for detecting the characteristic of fluid of the test point P1 in the connector 3, The switch state of the control switch 4 is determined by the characteristic of fluid；The opening section size of aditus laryngis 5, the aditus laryngis 5 is less than institute State the opening section size at other positions in connector 3；Wherein, the test point P1 be located at the aditus laryngis 5 and vacant end 31 it Between.

It will be appreciated by those skilled in the art that in practical applications, connector 3 described in the embodiment of the present invention can be used as a list Only components are assembled on existing kitchen ventilator, and original two fans in series of the kitchen ventilator are got up；Alternatively, the company Fitting 3 can be used for the original blower of the kitchen ventilator and a newly-increased fans in series, to form above-mentioned Fig. 1 extremely Series connection blower fan system 62 described in Fig. 7 obtains the technical effect of the wind pressure and exhaust air rate that increase the kitchen ventilator.For example, can be with The vacant end 31 of the connector 3 is connected with the first blower 1 described in above-mentioned Fig. 1 to Fig. 7, by the company of the connector 3 It connects end 34 to be connected with the second blower 2 described in above-mentioned Fig. 1 to Fig. 7, to form the series connection blower fan system 62.Further, exist It is easy to operate without doing any change to the original blower of the kitchen ventilator in assembling process, almost do not have to change the oil smoke The circuit structure of machine is easy to promote and apply on a large scale.

Preferably, the blower 2 can be connected with the blower of the existing kitchen ventilator in the way to insert；Alternatively, institute The outlet air end for stating blower 2 and the blower of the existing kitchen ventilator other modes such as can also be connected by screw bolts and be attached.

Further, when the characteristic of fluid of the test point P1 is greater than default control threshold value, the control switch 4 is determined Conducting；When the characteristic of fluid of the test point P1 is less than default control threshold value, determine that the control switch 4 turns off.

As a change case, the specific structure of the connector 3 can also be referring to above-mentioned Fig. 3 or technology shown in Fig. 7 Scheme, it will not be described here.

Working principle, more contents of working method about the connector 3, are referred to above-mentioned Fig. 1 into Fig. 7 Associated description, which is not described herein again.

Figure 13 is a kind of flow chart of the control method of kitchen ventilator of fifth embodiment of the invention.Wherein, the kitchen ventilator Specific structure can be with reference to kitchen ventilator 6 described in above-mentioned Fig. 8.

Specifically, the kitchen ventilator 6 may include ontology 61 and series connection blower fan system 62.Wherein, the series connection blower system The specific structure of system 62 can be with reference to the technical solution shown in above-mentioned Fig. 1 to Fig. 7.

More specifically, with reference to above-mentioned Fig. 1 to Fig. 7, the series connection blower fan system 62 of the kitchen ventilator 6 may include the first wind Machine 1 and the second blower 2, first blower 1 is connect with second blower 2 via connector 3, so that first blower 1 The air-flow Air that flows out of outlet air end 11 air intake 21 of second blower 2 is flowed into via the connector 3.

Further, in the present embodiment, the control method of the kitchen ventilator 6 can be implemented in accordance with the following steps:

Step S101, acquisition default in the characteristic of fluid of the test point P1 in the connector 3.

Step S102 judges the working condition of first blower 1 according to the characteristic of fluid of the test point P1.

Step S103 controls the working condition of second blower 2 according to judging result so that second blower 2 with The opening of first blower 1 and open, and closed with the closing of first blower 1.

Further, the characteristic of fluid may include static pressure, dynamic pressure, total pressure, air quantity, flow velocity, any one of or appoint It is a variety of.

Further, the connector 3 may include aditus laryngis 5, and the opening section size of the aditus laryngis 5 is less than the connection The opening section size at other positions in part 3, the test point P1 be located at the aditus laryngis 5 and the first blower 1 outlet air end 1 it Between.

Preferably, the specific structure of the connector 3 is referred to technical solution shown in above-mentioned Fig. 1 to Figure 12, here It repeats no more.

In a preferred embodiment, described the can be judged according to the comparison result of the characteristic of fluid and default control threshold value The working condition of one blower 1.Preferably, when the comparison result shows that the characteristic of fluid is greater than the default control threshold value When, judge to determine that first blower 1 is in the open state, and then control second blower 2 and open.Alternatively, working as the ratio Compared with the result shows that judging that determining that first blower 1 is in closes shape when the characteristic of fluid is less than the default control threshold value State then controls second blower 2 and closes.

For example, the control switch 4 (such as pressure switch 41) senses the test point after first blower 1 is opened The air pressure of P1 increases, when the air pressure of the test point P1 be increased to 3 outside of connector with the test point P1 corresponding position When the difference for the air pressure set is greater than the default control threshold value (such as preset pressure threshold value), then the control switch 4 is closed, to connect Lead to the connection between the power supply of second blower 2 and the main power source of the kitchen ventilator 6, so that second blower 2 energization is opened It opens.Further, after first blower 1 closing, the control switch 4 (such as pressure switch 41) senses the test point The air pressure of P1 reduces, when the test point P1 air pressure drop down to 3 outside of connector with the test point P1 corresponding position When the difference for the air pressure set is less than (or being equal to) described default control threshold value (such as preset pressure threshold value), then the control switch 4 It opens, to disconnect the connection between the power supply of second blower 2 and the main power source of the kitchen ventilator 6, so that second wind The power-off of machine 2 stops working.

In another example the sensor 42 of the control switch 4 acquires the connector 3 in real time after first blower 1 is opened The air quantity of interior test point P1 simultaneously feeds back to trigger switch 43, when the air quantity for the test point P1 that the trigger switch 43 receives When rising to greater than the default control threshold value (such as default air quantity threshold value), the trigger switch 4 is acted, to connect described second Connection between the power supply of blower 2 and the main power source of the kitchen ventilator 6 is opened so that second blower 2 is powered.Further Ground, after first blower 1 is closed, the sensor 42 of the control switch 4 continues to acquire test point P1 in the connector 3 Air quantity simultaneously feeds back to trigger switch 43, when the air quantity for the test point P1 that the trigger switch 43 receives deteriorates to less than institute When stating default control threshold value (such as default air quantity threshold value), the trigger switch 4 is acted, to disconnect the power supply of second blower 2 Connection between the main power source of the kitchen ventilator 6, so that second blower 2 power-off is closed.

Working principle, more contents of working method about the kitchen ventilator 6, are referred to above-mentioned Fig. 1 into Fig. 7 Associated description, which is not described herein again.

By upper, using the scheme of the 5th embodiment, without designing special circuit control logic for second blower 2, But the working condition of the second blower 2 can be automatically controlled by identifying the working condition of first blower 1, to ensure The linkage work that two in kitchen ventilator 6 blowers can automate is stated, to realize the wind pressure and exhaust air rate for increasing kitchen ventilator Technical effect.

Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute Subject to the range of restriction.

Claims

1. a kind of series connection blower fan system (62) for kitchen ventilator characterized by comprising

First blower (1)；

Second blower (2)；

Connector (3), the both ends of the connector (3) are separately connected the outlet air end (11) and described of first blower (1) The air intake (21) of two blowers (2), so that the air-flow that the outlet air end (11) of first blower (1) flows out is via the connector (3) air intake (21) of second blower (2) is flowed into；

Wherein, the connector (3) includes control switch (4), for detecting the stream of the test point (P1) in the connector (3) Body characteristics, and control according to the characteristic of fluid working condition of second blower (2) so that second blower (2) with The opening of first blower (1) and open, and closed with the closing of first blower (1)；

The connector (3) further includes aditus laryngis (5), and the opening section size of the aditus laryngis (5) is less than its in the connector (3) The opening section size at his position, the test point (P1) be located at the aditus laryngis (5) and the first blower (1) outlet air end (11) it Between.

2. series connection blower fan system (62) according to claim 1, which is characterized in that the control switch (4) is according to Characteristic of fluid and the comparison result of default control threshold value control the working condition of second blower (2)；

Wherein, when the characteristic of fluid is greater than the default control threshold value, the control switch (4) controls second blower (2) it opens；When the characteristic of fluid is less than the default control threshold value, the control switch (4) controls second blower (2) it closes.

3. series connection blower fan system (62) according to claim 1, which is characterized in that the characteristic of fluid of the test point (P1) Including any one of following element or appoint a variety of: static pressure, dynamic pressure, total pressure, air quantity, flow velocity.

4. series connection blower fan system (62) according to claim 1, which is characterized in that the control switch (4) includes:

Pressure switch (41), for detecting the static pressure of the test point (P1), and the second blower according to the Static prestressed-pile (2) working condition.

5. series connection blower fan system (62) according to claim 1, which is characterized in that the control switch (4) includes:

Sensor (42), for acquiring the characteristic of fluid of the test point (P1)；

Trigger switch (43) communicates with the sensor (42), with the test point acquired according to the sensor (42) (P1) characteristic of fluid controls the working condition of second blower (2).

6. series connection blower fan system (62) according to claim 1, which is characterized in that first blower (1) and the second wind Machine (2) shares power supply line；Alternatively, first blower (1) and the second blower (2) respectively have independent power supply line.

7. series connection blower fan system (62) according to claim 1, which is characterized in that other positions in the connector (3) Opening section size be gradually reduced in the first position (32) on the connector (3) between the aditus laryngis (5), the company First position (32) on fitting (3) is located between the outlet air end (11) and the aditus laryngis (5) of first blower (1).

8. series connection blower fan system (62) according to claim 7, which is characterized in that other positions in the connector (3) Opening section size be gradually increased between the second position (33) on the aditus laryngis (5) and the connector (3), the company The second position (33) on fitting (3) is located between the air intake (21) and the aditus laryngis (5) of second blower (2).

9. series connection blower fan system (62) according to claim 1, which is characterized in that other positions in the connector (3) Opening section size remain unchanged.

10. series connection blower fan system (62) according to any one of claim 1 to 9, which is characterized in that the test point (P1) characteristic of fluid be absolute fluid feature or fluid relative feature, wherein the fluid relative feature be with it is described The characteristic of fluid indicated on the basis of the external characteristic of fluid of the associated connector (3) of test point (P1).

11. a kind of kitchen ventilator (6), including ontology (61), which is characterized in that be provided on the ontology (61) claim 1 to Series connection blower fan system (62) described in any one of 10.

12. a kind of blower fan system (7), the blower fan system (7) includes blower (2), and the blower (2) has air intake (21), It is characterized by further comprising:

Connector (3), the connector (3) are connected with the air intake (21) of the blower (2), so that air-flow is from the connection The vacant end (31) of part (3) flows into, and the air intake (21) of the blower (2) is flowed into via the connector (3)；

Wherein, the connector (3) includes control switch (4), for detecting the stream of the test point (P1) in the connector (3) Body characteristics, and according to the working condition of the characteristic of fluid control blower (2)；

The connector (3) further includes aditus laryngis (5), and the opening section size of the aditus laryngis (5) is less than its in the connector (3) The opening section size at his position, the test point (P1) are located at the vacant end (31) of the aditus laryngis (5) and the connector (3) Between.

13. blower fan system (7) according to claim 12, which is characterized in that vacant end (31) quilt of the connector (3) It is set as appropriate for being connected in the exhaust port of a kitchen ventilator.

14. blower fan system (7) according to claim 12, which is characterized in that other positions opens in the connector (3) Mouth sectional dimension is gradually reduced in the first position (32) on the connector (3) between the aditus laryngis (5), the connector (3) first position (32) on is between the vacant end (31) and the aditus laryngis (5).

15. blower fan system (7) according to claim 14, which is characterized in that other positions opens in the connector (3) Mouth sectional dimension is gradually increased between the second position (33) on the aditus laryngis (5) and the connector (3), the connector (3) second position (33) on is located between the air intake (21) and the aditus laryngis (5) of the blower (2).

16. blower fan system (7) according to claim 12, which is characterized in that other positions opens in the connector (3) Mouth sectional dimension remains unchanged.

17. a kind of connector (3) for kitchen ventilator characterized by comprising

Vacant end (31)；

Connecting pin (34)；

Control switch (4), for detecting the characteristic of fluid of the test point (P1) in the connector (3), the control switch (4) Switch state determined by the characteristic of fluid；

Aditus laryngis (5), the opening section size of the aditus laryngis (5) are less than the opening section ruler at other positions in the connector (3) It is very little；

Wherein, the test point (P1) is between the aditus laryngis (5) and vacant end (31).

18. connector (3) according to claim 17, which is characterized in that when the characteristic of fluid of the test point (P1) is big When default control threshold value, determine that the control switch (4) are connected；When the characteristic of fluid of the test point (P1) is less than default control When threshold value processed, determine that the control switch (4) turn off.

19. a kind of control method of kitchen ventilator (6), the kitchen ventilator (6) includes the first blower (1) and the second blower (2), described First blower (1) is connect with second blower (2) via connector (3), so that the outlet air end (11) of first blower (1) The air-flow of outflow flows into the air intake (21) of second blower (2) via the connector (3) characterized by comprising

Acquisition defaults in the characteristic of fluid of the test point (P1) in the connector (3)；

The working condition of first blower (1) is judged according to the characteristic of fluid of the test point (P1)；

The working condition that second blower (2) is controlled according to judging result, so that second blower (2) is with first wind The opening of machine (1) and open, and closed with the closing of first blower (1).

20. control method according to claim 19, which is characterized in that the connector (3) includes aditus laryngis (5), described The opening section size of aditus laryngis (5) is less than the opening section size at other positions in the connector (3), the test point (P1) Between the aditus laryngis (5) and the outlet air end (11) of the first blower (1).

21. control method according to claim 19, which is characterized in that the fluid according to the test point (P1) is special Sign judges that the working condition of first blower (1) includes:

The working condition of first blower (1) is judged according to the comparison result of the characteristic of fluid and default control threshold value；

Wherein, when the comparison result shows that the characteristic of fluid is greater than the default control threshold value, judge to determine described the One blower (1) is in the open state；When the comparison result shows that the characteristic of fluid is less than the default control threshold value, sentence It is disconnected to determine that first blower (1) is in close state；

The working condition for controlling second blower (2) according to judging result includes:

When the judging result shows first blower (1) in the open state, control second blower (2) is opened； Otherwise, second blower (2) is controlled to close.