CN107013495B - Fan integrated system with double air duct switching function and air duct switching method thereof - Google Patents
Fan integrated system with double air duct switching function and air duct switching method thereof Download PDFInfo
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- CN107013495B CN107013495B CN201710381680.XA CN201710381680A CN107013495B CN 107013495 B CN107013495 B CN 107013495B CN 201710381680 A CN201710381680 A CN 201710381680A CN 107013495 B CN107013495 B CN 107013495B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
Abstract
The utility model provides a fan integrated system who possesses two wind channels and switch, includes the spiral case, the fan subassembly, the pipeline of breathing in, the gas charging line, wind channel switching pipeline and wind channel switching control assembly, a plurality of radial vents have been seted up along the axial to the wind channel switching pipeline, wind channel switching control assembly is including inlaying piston baffle and the connecting rod of locating in the wind channel switching pipeline, the drive control motor passes through connecting rod drive piston baffle and slides along the axial in the wind channel switching pipeline in order to realize the wind channel and switch. The fan integrated system with double air duct switching and the air duct switching method thereof can realize the switching of a single fan to various air supply modes by adjusting the air duct, do not need complex independent air ducts and multi-fan arrangement, have the characteristics of intensive energy conservation, light weight and modularized installation, can solve the difficulty brought by the design and installation regulation of the air duct of the inflatable structure, and provide a new technical scheme for designing and manufacturing the complex dynamic modeling of the inflatable structure.
Description
Technical Field
The invention relates to the field of air supply equipment, in particular to a fan integrated system with double air channel switching and an air channel switching method thereof.
Background
The manufacturing technology of the inflatable amusement equipment is mature day by day, inflatable products containing various shapes and beautiful appearance are full of selling and amusement markets, and inflatable children parks, inflatable slides, inflatable cartoon shapes and the like are commonly arranged in parks.
However, the conventional display mode of the inflatable structure only depends on gorgeous static shape which is attractive to viewers, the updating and the release of each generation of novel products are usually realized by means of independent appearance change and color rendering, namely that soup is changed but medicine is not changed, the playing method of the products is still unchanged, along with the requirements of abundant material life and increasing mental culture requirements of people, equipment with various shapes gradually loses novelty and gradually shows single adjustment, children are strange to various new shapes, and lack of strong interest, various signs show that the traditional appearance design mode is gradually unavailable, designers must widen the design field, and the diversity of functions and the variability of the playing method of the inflatable product are combined, so that the new design direction of the inflatable product is developed.
In order to break through the increasingly deficient bottleneck of design materials and break through the static shape of the inflatable structure, the dynamic and static combination of the traditional inflatable structure is realized, the energy and the novelty can be brought to the tedious shape structure, and the charm attraction of the inflatable structure is further exerted for the second time, so that the inflatable structure is an innovative design mode.
The conventional implementation method for realizing the dynamic action of the inflatable structure depends on the driving of a mechanical component, the mechanical component is difficult to realize good combination with the inflatable structure due to complex structure and large mass, and the action driven by the mechanical component is relatively rigid and has larger noise; through changing the gas filled state of gas filled structure to realize the change to the air film appearance that the air current supported with the help of the control of air current, can effectively overcome a great deal of defects that mechanical component exists when realizing gas filled structure dynamic action, make motion control natural smoothness, and simplified the product structure, avoided the stiff sense and the potential safety hazard of use of installation restriction, control that mechanical component exists.
As is well known, the main supporting carrier of the inflatable structure is air filled inside, and the inflatable amusement equipment is inflated all the time to form internal pressure of the equipment, so that the whole structure of the inflatable amusement equipment is expanded to form supporting force. When the structure is inflated with gas, the gas film expands, when the structure is pumped out, the gas film contracts and collapses, the gas film is periodically inflated and pumped out, so that the expansion and contraction movement of the gas film can be realized, and the special film side line structure of the inflatable structure is used for realizing the movement modeling of a certain part or the whole of the inflatable structure. For example, a dynamic inflation model of an animal tail is designed, the tail can be raised when the tail part is inflated with air, the tail can hang down when the air is pumped out of the tail part, and the tail part can be dynamically swung up and down by periodically inflating and pumping the tail part.
To facilitate product display, it is often desirable to keep the inflatable structure product entirely static and in some areas dynamic. And the stick gas filled structure product not only needs to keep holistic inflation pressure stable but also needs to realize the expansion contraction motion at certain position, promptly the interior air feed that should last of gas filled structure is again in whole air feed periodic convulsions air extraction at certain required position, wherein must have certain conflict, single fan receives self structure and function restriction and can't satisfy gas filled structure to the demand of above-mentioned multiple air feed mode, need control the air feed convulsions alone through arranging many independent wind channels and adopting the fan of different functions in order to solve above-mentioned problem usually, and the sealed arrangement and the bonding concatenation of the inside membrane material of gas filled structure must be considered in seting up of independent wind channel, the arrangement also need be considered comprehensively to the mounted position of different fans and the business turn over mode of circuit, thereby cause very big puzzlement for gas filled structure's design and installation, structural design's overall cost is also higher.
Disclosure of Invention
Based on the above problems and design defects, the present invention aims to provide a fan integrated system with dual air duct switching and an air duct switching method thereof, the fan integrated system can realize the switching of a single fan to multiple air supply modes by adjusting the air duct without complex independent air ducts and multiple fan arrangement, has the characteristics of intensive energy saving, light weight, modularized installation and intelligent regulation and control of actions, and can solve the difficulties brought by the air duct design and installation regulation and control of an inflatable structure, thereby providing a new technical scheme for designing and manufacturing complex movable inflatable models.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a fan integrated system with dual air duct switching comprises: a volute having an air inlet and an air outlet; the fan assembly is arranged in the volute; the tail end of the air suction pipeline is communicated with an air inlet of the volute; the starting end of the inflation pipeline is communicated with the air outlet of the volute, and the tail end of the inflation pipeline is provided with a first air outlet; the air channel switching pipeline is connected and arranged between the starting end of the air suction pipeline and the pipeline side wall of the inflation pipeline, a first air inlet and a driving control motor are respectively arranged at the starting end and the tail end of the air channel switching pipeline, the air channel switching pipeline is sequentially provided with a first radial vent, a second vent and a third vent on the side wall along the axial direction, the first vent is connected with the starting end of the air suction pipeline, the third vent is connected and communicated with the pipeline side wall of the inflation pipeline, and the second vent is positioned between the first vent and the third vent and is communicated with the outside; the air channel switching control assembly comprises a first piston baffle, a second piston baffle and a connecting rod, wherein the first piston baffle, the second piston baffle and the connecting rod are hermetically embedded in the air channel switching pipeline, the connecting rod is transversely connected with the two piston baffles in a penetrating mode, and the driving control motor drives the two piston baffles to synchronously slide in the air channel switching pipeline along the axial direction through the connecting rod.
As a preferred scheme, the fan integrated system further comprises an integrated box body, the integrated box body is covered outside the fan integrated system, and the surface of the integrated box body is provided with mounting holes for inserting the first air inlet, the first air outlet and the second air inlet.
As a preferred scheme, the volute and the pipelines are connected in a sealing way so as to ensure that each air circulation channel is not influenced by external air inlet or air leakage.
As a preferred scheme, the fan assembly can be a centrifugal fan or an axial flow fan, and fan assemblies of different specifications and different types can be selected according to the specific requirement of the air supply pressure of the air charging structure.
As a preferred scheme, a master control PLC device is connected to the drive control motor, and the master control PLC device automatically regulates and controls the movement of the piston baffle by the drive control motor according to a set program.
As a preferable scheme, three radial ventilation openings in the air channel switching pipeline are arranged at equal intervals, the relative positions of the first piston baffle and the second piston baffle are kept constant, and the distance between the two piston baffles is equal to the distance between the outer edges of the two adjacent ventilation openings.
Preferably, the end of the air duct switching pipeline, at which the drive control motor is installed, is sealed to maintain good sealing performance in the air duct switching pipeline.
An air duct switching method of a fan integrated system with double air duct switching comprises the following steps:
(1) Opening a first air duct: the driving control motor drives the first piston baffle to be located between the first ventilation opening and the second ventilation opening and drives the second piston baffle to be located between the third ventilation opening and the tail end of the air channel switching pipeline, at the moment, the first air inlet, the volute air outlet and the first air outlet are communicated to construct a first air circulation channel, and the first air inlet, the volute air outlet and the second ventilation opening are communicated to construct a second air circulation channel;
(2) Opening a second air channel: the driving control motor drives the first piston baffle to be located between the first air inlet and the first air vent, and drives the second piston baffle to be located between the second air vent and the third air vent, and at the moment, the second air vent, the volute air inlet, the volute air outlet and the first air outlet are communicated to construct a third air circulation channel.
When a first air circulation channel of the fan integrated system is communicated, air is sucked in from the first air inlet and is output through the first air outlet, at the moment, the first air inlet serves as an air suction port, and the first air outlet serves as an air charging port;
when a second air circulation channel of the fan integrated system is communicated, air is sucked in from the first air inlet and is output through the second air vent, at the moment, the first air inlet serves as an air suction port, and the second air vent serves as an air charging port;
when a third air circulation channel of the fan integrated system is communicated, air is sucked in from the second air opening and is output from the first air outlet, at the moment, the second air opening serves as an air suction opening, and the first air outlet serves as an air charging opening.
In conclusion, when the first air channel is opened, the second air vent and the first air outlet can be used as air inflation ports, so that the double-channel air inflation function of the single fan is realized; when the second air channel is opened, the second air channel serves as an air pumping port, the first air outlet serves as an air charging port, and the simultaneous air charging and air pumping functions of the single fan are realized; in the air duct switching process, the first air outlet is always used as an inflation inlet, and the second air outlet can be used as both an inflation inlet and an air extraction inlet, so that periodic air duct switching can be performed by only using the driving control motor, periodic air extraction and air extraction of a certain part can be performed by using the same fan while the whole air inflation and air supply are kept, and a solution is provided for dynamic modeling control of an inflation structure.
Has the advantages that:
1. the fan integrated system prepared by the invention realizes the switching of a single fan corresponding to various air supply forms by arranging the double-air-channel switching system, can realize the air supply mode of parallel operation of air supply and air exhaust in the same period, and solves the technical bottleneck for the design of dynamic modeling of an inflatable structure.
2. The fan integrated system prepared by the invention realizes the control of inflation and air exhaust by using a single fan at the same time, and omits the arrangement of independent air channels for inflation and air exhaust, thereby optimizing the installation structure of the air supply device, improving the use efficiency of the fan, and reducing the energy consumption and the installation cost of the fan.
3. The fan integrated system prepared by the invention has a simple structure, each component and pipeline can be installed in a modularized way, the disassembly and the replacement and the maintenance are convenient, and the switching control of the air channels is carried out by components such as the piston baffle plate, so that the switching process of the air channels is more moderate and is not abrupt, and the dynamic effect of the air charging structure is more natural.
4. The fan integrated system prepared by the invention is integrally integrated in a box body, the occupied area is small, the control precision is ensured through the program setting of the master control PLC device, and meanwhile, the noise of equipment operation and air duct switching is reduced by adopting a switching mode of pushing the piston baffle and the connecting rod.
Drawings
FIG. 1 is a schematic structural diagram of a fan integrated system for opening a first air duct;
FIG. 2 is a schematic structural diagram of a fan integrated system opening a second air duct;
description of the drawings: 1. the air channel switching device comprises an integrated box body, 2, a volute, 3, a fan assembly, 4, an air suction pipeline, 5, an inflation pipeline, 6, an air channel switching pipeline, 7, a first air outlet, 8, a first air inlet, 9, a driving control motor, 10, a first ventilation opening, 11, a second ventilation opening, 12, a third ventilation opening, 13, a first piston baffle, 14, a second piston baffle, 15 and a connecting rod.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
In the description of the embodiments and drawings of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes and for distinguishing between individual components, and are not to be construed as indicating or implying relative importance, unless otherwise explicitly stated or specifically limited; the terms "mounted," "connected," and "communicating" are to be construed broadly and may include fixed connections, removable connections, integral connections, electrical connections, indirect connections through intervening media, or communications between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example (b):
the blower integration system with double air duct switching provided by the invention is shown in the structural schematic diagrams of fig. 1 and fig. 2, and comprises an integration box body 1, wherein the integration box body 1 is covered outside the blower integration system and mainly plays a role in protecting each component in the box body; the integrated box body 1 is internally provided with a volute 2, the volute 2 is of a hollow sealed shell structure, and both ends of the outer surface of the volute are provided with an air inlet and an air outlet; the volute 2 is internally and fixedly provided with a fan assembly 3, and according to different requirements of specific use occasions on fan specifications, the fan assembly 3 can be selected from various types and specifications of fan devices such as a centrifugal fan or an axial flow fan; an air suction pipeline 4 is connected and installed at an air inlet of the volute 2, an air charging pipeline 5 is connected and installed at an air outlet of the volute 2, and a first air outlet 7 is arranged at the tail end of the air charging pipeline 5; an air channel switching pipeline 6 is connected and installed between the starting end of the air suction pipeline 4 and the side wall of the middle pipeline section of the inflation pipeline 5, the air channel switching pipeline 6 is of a hollow pipe body structure, a first air inlet 8 communicated with the outside is formed in the starting end of the air channel switching pipeline 6, a driving control motor 9 is arranged at the tail end of the air channel switching pipeline 6, and the tail end of an installation pipeline of the driving control motor 9 is sealed to ensure that the sealing performance in the air channel switching pipeline 6 is good; the air channel switching pipeline 6 is sequentially provided with a first radial ventilation opening 10, a second ventilation opening 11 and a third ventilation opening 12 on the side wall of the pipeline along the axial direction, the first ventilation opening 10 is connected with the starting end of the air suction pipeline 4, the third ventilation opening 12 is connected and communicated with the side wall of the pipeline of the inflation pipeline 5, and the second ventilation opening 11 is positioned between the first ventilation opening 10 and the third ventilation opening 12 and is communicated with the outside; a first piston baffle 13, a second piston baffle 14 and a connecting rod 15 transversely penetrating and connecting the two piston baffles are embedded in the pipeline of the air channel switching pipeline 6 in a sealing manner, one end of the connecting rod 15 penetrates and connects the two piston baffles to play a role in connection and support, the other end of the connecting rod is fixedly connected with the driving control motor 9, the first piston baffle 13, the second piston baffle 14 and the connecting rod 15 jointly form an air channel switching control assembly, and the driving control motor 9 can drive the two piston baffles to synchronously slide in the air channel switching pipeline 6 along the axial direction through the connecting rod 15.
In this fan integrated system, the ventilation hole total 3 with external intercommunication, first air inlet 8, first gas outlet 7 and second ventilation opening 11, correspondingly, also offer the mounting hole that is used for 3 ventilation holes more than interlude on integrated box 1 surface, for the influence that ensures that the circulation of air passageway in the integrated system does not receive external air admission or gas leakage, except that above 3 ventilation holes, all adopt airtight connection between other each pipelines.
In order to facilitate the switching of different air channels of the integrated system, a master control PLC device is connected to the drive control motor 9 and automatically regulates and controls the movement of the piston baffles in the air channel switching pipeline 6 according to a set program through the drive control motor 9, meanwhile, the three radial air vents are arranged at equal intervals, the relative positions of the first piston baffle 13 and the second piston baffle 14 are kept constant, and the distance between the two piston baffles is equal to the distance between the outer edges of the two adjacent air vents.
When the specific double-air-channel switching is carried out, the method is realized by the following steps:
(1) Opening a first air channel: the driving control motor 9 drives the first piston baffle 13 to be located between the first ventilation opening 10 and the second ventilation opening 11, and drives the second piston baffle 14 to be located between the third ventilation opening 12 and the tail end of the air channel switching pipeline 6, at this time, the first air inlet 8, the volute air inlet, the volute air outlet and the first air outlet 7 are communicated to form a first air circulation channel, and the first air inlet 8, the volute air inlet, the volute air outlet and the second ventilation opening 11 are communicated to form a second air circulation channel;
(2) Opening a second air channel: the driving control motor 9 drives the first piston baffle 13 to be located between the first air inlet 8 and the first vent 10, and drives the second piston baffle 14 to be located between the second vent 11 and the third vent 12, and at this time, the second vent 11, the volute air inlet, the volute air outlet and the first air outlet 7 are communicated to form a third air circulation channel.
When the fan integrated system opens the first air channel, the first air circulation channel and the second air circulation channel are simultaneously communicated, outside air is sucked into the air channel switching pipeline 6 through the first air inlet 8 and is respectively blown out through the first air outlet 7 and the second air outlet 11, air outlets of the first air outlet 7 and the second air outlet 11 are connected with the inflation structure, and at the moment, both the first air outlet 7 and the second air outlet 11 can serve as inflation inlets and simultaneously inflate the inflation structure;
when the fan integrated system opens the second air duct, the third air circulation channel is conducted, air is sucked through the second air vent 11 and blown out through the first air outlet 7, at the moment, the second air vent 11 serves as an air suction port, the first air outlet 7 serves as an air inflation port, and as the first air outlet 7 and the second air vent 11 are both connected with the air inflation structure, the first air outlet 7 keeps inflating the air inflation structure, and the second air vent 11 becomes to exhaust the air inflation structure, so that the function of synchronously inflating and exhausting through the same fan is realized.
When the fan integrated system is switched to the first air channel again, the first air outlet 7 keeps the air inflation function unchanged, and the second air outlet 11 is changed from the air suction function to the air inflation function again; when the air duct is periodically and repeatedly switched, the air charging function of the first air outlet 7 is kept unchanged, and meanwhile, the second air outlet 11 is periodically switched to air suction and air charging.
Therefore, when the dynamic modeling of a certain position is realized while the whole air pressure of the inflatable structure is required to be kept stable, only the first air outlet 7 is connected with the whole air chamber of the inflatable structure, the second air outlet 11 is connected to the air chamber of the dynamic modeling part, and then the periodic double-air-channel switching is carried out by means of the driving control motor 9, so that the periodic air suction and exhaust of the certain position can be realized while the whole air inflation and air supply is kept by using the same fan, and a solution is provided for the dynamic modeling control of the inflatable structure.
In addition, when a plurality of inflatable structures or a plurality of parts of the inflatable structures need to realize dynamic modeling, a plurality of branch pipelines can be diverged from the tail ends of the second air vents 11 and the first air vents 7, or the number of the air vents is increased on the air duct switching pipeline, so that linkage control of the plurality of inflatable structures or the plurality of parts of the inflatable structures is realized.
When the air duct switching device is applied to the site, the air duct switching component in the embodiment is not limited to the piston baffle and the connecting rod device, various control components such as an electromagnetic valve and a ventilation valve can be used according to specific application occasions, the control mode can realize automatic and manual switching, the arrangement and the trend of each pipeline are determined according to specific layout requirements on the premise of not deviating from a basic structure, the selection of the specification and the model of each component is not limited, and the integral function of the system is not influenced.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications, substitutions and improvements of the technical solutions of the present invention by those skilled in the art should fall within the scope of the present invention without departing from the design concept of the present invention.
Claims (6)
1. The utility model provides a fan integrated system who possesses two wind channels and switch which characterized in that includes:
a volute having an air inlet and an air outlet;
a fan assembly disposed within the volute;
the tail end of the air suction pipeline is communicated with an air inlet of the volute;
the starting end of the inflation pipeline is communicated with the air outlet of the volute, and the tail end of the inflation pipeline is provided with a first air outlet; the air channel switching pipeline is connected and arranged between the starting end of the air suction pipeline and the pipeline side wall of the inflation pipeline, a first air inlet and a driving control motor are respectively arranged at the starting end and the tail end of the air channel switching pipeline, the air channel switching pipeline is sequentially provided with a first radial vent, a second vent and a third vent on the side wall along the axial direction, the first vent is connected with the starting end of the air suction pipeline, the third vent is connected and communicated with the pipeline side wall of the inflation pipeline, and the second vent is positioned between the first vent and the third vent and is communicated with the outside;
the air channel switching control assembly comprises a first piston baffle plate, a second piston baffle plate and a connecting rod, wherein the first piston baffle plate and the second piston baffle plate are hermetically embedded in the air channel switching pipeline, the connecting rod transversely penetrates through the two piston baffle plates, and the driving control motor drives the two piston baffle plates to synchronously slide in the air channel switching pipeline along the axial direction through the connecting rod;
the volute and the pipelines are connected in a sealed manner;
and the tail end of the drive control motor is arranged in the air channel switching pipeline for sealing.
2. The fan integrated system with double air channel switching according to claim 1, wherein: the fan integrated system is characterized by further comprising an integrated box body, the integrated box body is covered outside the fan integrated system, and mounting holes for inserting the first air inlet, the first air outlet and the second air vent are formed in the surface of the integrated box body.
3. The fan integrated system with double air channel switching according to claim 1, wherein: the fan assembly is a centrifugal fan or an axial flow fan.
4. The integrated system of claim 1, wherein the integrated system comprises: the drive control motor is connected with a master control PLC device, and the master control PLC device automatically regulates and controls the movement of the piston baffle plate according to a set program through the drive control motor.
5. The fan integrated system with double air channel switching according to claim 1, wherein: three radial ventilation openings in the air channel switching pipeline are arranged at equal intervals, the relative positions of the first piston baffle and the second piston baffle are kept constant, and the spacing distance between the two piston baffles is equal to the outer edge distance between the two adjacent ventilation openings.
6. The air duct switching method of the fan integrated system with double air duct switching according to any one of claims 1 to 5, characterized by comprising the following steps:
(1) Opening a first air channel: the driving control motor drives the first piston baffle to be located between the first ventilation opening and the second ventilation opening and drives the second piston baffle to be located between the third ventilation opening and the tail end of the air channel switching pipeline, at the moment, the first air inlet, the volute air outlet and the first air outlet are communicated to construct a first air circulation channel, and the first air inlet, the volute air outlet and the second ventilation opening are communicated to construct a second air circulation channel;
(2) Opening a second air channel: the drive control motor drives the first piston baffle to be located between the first air inlet and the first vent, and drives the second piston baffle to be located between the second vent and the third vent, and at the moment, the second vent, the volute air inlet, the volute air outlet and the first air outlet are communicated to construct a third air circulation channel.
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| CN201710381680.XA CN107013495B (en) | 2017-05-26 | 2017-05-26 | Fan integrated system with double air duct switching function and air duct switching method thereof |
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| CN201710381680.XA CN107013495B (en) | 2017-05-26 | 2017-05-26 | Fan integrated system with double air duct switching function and air duct switching method thereof |
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| CN107795517A (en) * | 2017-10-30 | 2018-03-13 | 明达实业(厦门)有限公司 | A kind of air pump with multi-channel structure |
| CN108443229A (en) * | 2018-03-13 | 2018-08-24 | 昆山斯莱姆节能科技有限公司 | Centrafugal pipeline fan |
| CN109506281B (en) * | 2019-01-24 | 2020-02-07 | 佛山市顺德区美的洗涤电器制造有限公司 | Smoke exhaust ventilator |
| CN110006623B (en) * | 2019-05-23 | 2024-02-02 | 重庆大学 | Tornado and downburst two-in-one simulation device and simulation method thereof |
| CN110930903B (en) * | 2019-12-17 | 2021-10-22 | 刘路路 | Accomplish storage device that gas mould was accomodate fast |
| CN111947175A (en) * | 2020-07-21 | 2020-11-17 | 淮安金能能源科技有限公司 | Flue gas switching pipeline |
| CN113668438B (en) * | 2021-07-29 | 2023-01-06 | 浙江亚特电器股份有限公司 | Air blowing and sucking conversion device and air blowing and sucking machine |
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