Dual-channel air ventilation and purification device and valve assembly thereof

Abstract

The embodiment of the present invention relates to a dual-channel air ventilation and purification device and a valve assembly thereof, which relates to the field of air purification technology. The main purpose is to provide a multifunctional and easy-to-operate dual-channel air ventilation and purification device and a valve assembly thereof. The main technical solution adopted is: the valve assembly includes: a valve base, the valve base is provided with a ventilation valve port, a purification valve port, and a negative pressure valve port; a ventilation valve core body, which is provided at the ventilation valve port; a purification valve core body, which is provided at the purification valve port; a negative pressure valve core body, which is provided at the negative pressure valve port; and an operating component for jointly controlling the ventilation valve core body, the purification valve core body, and the negative pressure valve core body. Compared with the prior art, when operating in the ventilation mode, there is no need to operate the electrically controlled purification valve and the electrically controlled negative pressure valve, and the operation process is more convenient.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of air purification, and in particular to a dual-channel air ventilation and purification device and a valve assembly thereof. Background Art

[0002] When responding to wars, natural disasters, and production accidents, it is necessary to consider the air pollution situation more comprehensively and provide people with a clean living space.

[0003] In a polluted air environment with particulate pollutants in the external environment, a particle purifier can be used to purify the air, and the filtered clean air is used as the air source inside the isolation tent. In a toxic and harmful environment, an absorption purification device is needed to purify the air, absorb the polluted gas, and use the absorbed and purified clean air as the air source inside the isolation tent.

[0004] Among them, in order to meet the comprehensive accident prevention and control, multiple different air treatment devices (for example: particulate matter purifiers, absorption purification devices) are required. Therefore, it is necessary to equip the isolation tent with multiple sets of air treatment equipment, which takes a long time. Summary of the Invention

[0005] In view of this, an embodiment of the present invention provides a dual-channel air ventilation and purification device and a valve assembly thereof, the main purpose of which is to provide a multifunctional and easy-to-operate dual-channel air ventilation and purification device and a valve assembly thereof.

[0006] To achieve the above objectives, the embodiments of the present invention mainly provide the following technical solutions:

[0007] In one aspect, an embodiment of the present invention provides a valve assembly for a dual-channel air ventilation and purification device, comprising:

[0008] A valve base body, wherein the valve base body is provided with a ventilation valve port, a purification valve port, and a negative pressure valve port;

[0009] A ventilation valve core body is arranged at the ventilation valve port;

[0010] A purification valve core body is arranged at the purification valve port;

[0011] A negative pressure valve core body is arranged at the negative pressure valve port;

[0012] The operating component for jointly controlling the ventilation valve core body, the purification valve core body and the negative pressure valve core body is respectively connected to the ventilation valve core body, the purification valve core body and the negative pressure valve port, and is used to receive the rotational force of external operation. The operating component transmits the rotational force received to the ventilation valve core body, the purification valve core body and the negative pressure valve core body, so that the ventilation valve core body changes from a closed state closed to the ventilation valve port to an open state opened to the ventilation valve port, the purification valve core body changes from an open state opened to the purification valve port to a closed state closed to the purification valve port, and the negative pressure valve core body changes from an open state opened to the negative pressure valve port to a closed state closed to the negative pressure valve port.

[0013] The objectives of the embodiments of the present invention and the solutions to the technical problems thereof can be further achieved by adopting the following technical measures.

[0014] Optionally, the valve assembly of the aforementioned dual-channel air ventilation and purification device further includes:

[0015] a force storage component connected to the operating component, and configured to receive and store the rotational force exerted by the operation through the operating component;

[0016] The electrically controlled locking component is used to lock the operating component to limit the rotation of the operating component and to release the locking of the operating component through an electrically controlled operation.

[0017] Optionally, the valve assembly of the aforementioned dual-channel air ventilation and purification device, wherein the operating component includes a rotating shaft, the rotating shaft is rotatably arranged on the valve base, the ventilation valve core body, the purification valve core body and the negative pressure valve core body are arranged on the rotating shaft, and are linked with the rotation of the rotating shaft, and one end of the rotating shaft is exposed as an operating end.

[0018] Optionally, in the aforementioned valve assembly of the dual-channel air ventilation and purification device, the valve base comprises a rectangular bottom shell and a rectangular side wall around the outer periphery of the rectangular bottom shell;

[0019] The rotating shaft includes a first shaft, a second shaft, a universal joint, and a third shaft;

[0020] The ventilation valve port, the purification valve port, and the negative pressure valve port are arranged on a diagonal line of the rectangular shell bottom;

[0021] The ventilation valve core body, the purification valve core body and the negative pressure valve core body are arranged on the first shaft;

[0022] The second shaft and the first shaft are connected via a worm gear cross transmission;

[0023] The first end of the third shaft is connected to the first end of the second shaft through the universal joint, the second end of the third shaft is perpendicular to the first side wall of the rectangular side wall, the operating end is the second end of the third shaft, the first side wall is provided with a control through hole, the second end of the third shaft is an inner polygonal jack or an outer polygonal plug, extending to the control through hole, and the inner polygonal jack or the outer polygonal plug is exposed through the control through hole.

[0024] Optionally, the valve assembly of the aforementioned dual-channel air ventilation and purification device, wherein the force storage component includes a torsion spring, the torsion spring is sleeved on the second end of the second shaft, the first end of the torsion spring is fixed to the valve base, and the second end of the torsion spring is fixed to the second shaft.

[0025] Optionally, in the aforementioned valve assembly of the dual-channel air ventilation and purification device, the electrically controlled locking component comprises: an electric drive mechanism, a ratchet, and a pawl;

[0026] The ratchet is arranged on the third shaft, the pawl is arranged on the valve base, and the pawl is one-way clamped with the ratchet;

[0027] The electric drive mechanism is used to drive the pawl to separate from the ratchet wheel.

[0028] Optionally, the valve assembly of the aforementioned dual-channel air ventilation and purification device, wherein the electric drive mechanism includes: a motor, the motor is arranged on the valve base, the output shaft of the motor is provided with a paddle, when the output shaft of the motor rotates from a first angle to a second angle, the paddle drives the pawl to separate from the ratchet.

[0029] Optionally, in the valve assembly of the aforementioned dual-channel air ventilation and purification device, at least one of the ventilation valve core body, the purification valve core body, and the negative pressure valve core body is a valve plate.

[0030] On the other hand, an embodiment of the present invention provides a dual-channel air ventilation and purification device, comprising:

[0031] A filter component having an exhaust chamber for discharging filtered particulate matter;

[0032] Purification components, including ventilation channels, purification channels and negative pressure channels;

[0033] a purification fan, wherein the air inlet side of the purification fan is connected to the exhaust chamber, and the air outlet side of the purification fan is connected to the entrance of the ventilation channel and the entrance of the purification channel;

[0034] Wherein, the negative pressure channel is connected to the exhaust chamber and the ventilation channel.

[0035] The valve assembly mentioned above; wherein,

[0036] The ventilation valve port is connected to the ventilation channel. When the ventilation valve core changes from a closed state at the ventilation valve port to an open state at the ventilation valve port, the ventilation channel changes from a blocked state to a connected state.

[0037] The purge valve port is connected to the purge passage, and when the purge valve core body changes from an open state at the purge valve port to a closed state at the purge valve port, the purge passage changes from a conducting state to a blocking state;

[0038] The negative pressure valve port is connected to the negative pressure channel. When the negative pressure valve core changes from an open state at the negative pressure valve port to a closed state at the negative pressure valve port, the negative pressure channel changes from a conducting state to a blocking state.

[0039] The objectives of the embodiments of the present invention and the solutions to the technical problems thereof can be further achieved by adopting the following technical measures.

[0040] Optionally, in the aforementioned dual-channel air ventilation and purification device, the ventilation channel is arranged on the periphery of the purification channel;

[0041] The ventilation valve ports are a pair, which are arranged on both sides of the purification valve port. The negative pressure valve ports are a pair, which are arranged on both sides of the purification valve port. The pair of ventilation valve ports, the purification valve ports, and the pair of negative pressure valve ports are arranged on a diagonal line in the rectangular shell bottom.

[0042] By means of the above technical solution, the dual-channel air ventilation and purification device and valve assembly thereof provided by the technical solution of the present invention have at least the following advantages:

[0043] In the technical solution provided by the embodiment of the present invention, during the operation in the ventilation mode, the operator only needs to apply a rotational force to the operating component once to change the ventilation valve core body from the closed state closed at the ventilation valve port to the open state opened at the ventilation valve port, the purification valve core body from the open state opened at the purification valve port to the closed state closed at the purification valve port, and the negative pressure valve core body from the open state opened at the negative pressure valve port to the closed state closed at the negative pressure valve port. Compared with the existing technology, during the operation in the ventilation mode, there is no need to operate the electrically controlled purification valve and the electrically controlled negative pressure valve, and the operation process is more convenient.

[0044] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the embodiments of the present invention and to implement them according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0046] Figure 1 This is a schematic structural diagram of a ventilation and purification device provided by an embodiment of the present invention;

[0047] Figure 2 is a schematic cross-sectional view of a ventilation and purification device provided by an embodiment of the present invention;

[0048] Figure 3 This is a schematic diagram of an exploded structure of a ventilation and purification device provided by an embodiment of the present invention from a first perspective;

[0049] Figure 4 is a schematic diagram of an exploded structure of a ventilation and purification device provided by an embodiment of the present invention from a second perspective;

[0050] Figure 5 is a schematic cross-sectional view of a cyclone filter of a ventilation and purification device provided by an embodiment of the present invention;

[0051] Figure 6 This is a schematic diagram of the axonometric structure of the air inlet end of a purification component of a ventilation purification device provided by an embodiment of the present invention;

[0052] Figure 7 1 is a left-side structural schematic diagram of a purification component of a ventilation purification device provided by an embodiment of the present invention;

[0053] Figure 8 This is a schematic diagram of the main structure of a purification component of a ventilation purification device provided by an embodiment of the present invention;

[0054] Figure 9 yes Figure 8 Schematic diagram of the cross-sectional structure of AA;

[0055] Figure 10 This is a schematic diagram of the axonometric structure of an air outlet end of a purification component of a ventilation and purification device provided by an embodiment of the present invention;

[0056] Figure 11 yes Figure 7 Schematic diagram of the cross-sectional structure of the middle BB;

[0057] Figure 12 This is a schematic diagram of the main structure of a valve assembly of a ventilation and purification device provided by an embodiment of the present invention;

[0058] Figure 13 This is a schematic structural diagram of a valve assembly of a ventilation and purification device provided by an embodiment of the present invention from a first perspective;

[0059] Figure 14 2 is a schematic structural diagram of a valve assembly of a ventilation and purification device provided by an embodiment of the present invention from a second perspective;

[0060] Figure 15 It is a partial cross-sectional structural schematic diagram of a ventilation and purification device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0061] To further illustrate the technical means and effects employed by the present invention to achieve the intended objectives of the embodiments, the following, in conjunction with the accompanying drawings and preferred embodiments, describes in detail the specific implementation, structure, features, and effects of the dual-channel air ventilation and purification device and its valve assembly according to the embodiments of the present invention. In the following description, different "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0062] Figures 1 to 11 For an embodiment of the ventilation and purification device provided by the present invention, please refer to Figures 1 to 11 A ventilation and purification device provided in one embodiment of the present invention includes at least: a purification component 10 and a purification fan 20.

[0063] The purification component 10 includes a first air flow channel and a second air flow channel.

[0064] The first airflow channel is provided with a polluted gas purification unit, which can be used to purify harmful gases in the air. This unit serves as a purification channel 11, and is provided with a purification valve 31. The specific material and structure can be determined according to the type of polluted gas to be filtered. It can be set to filter a single type of harmful gas, or it can be set to filter at least two types of harmful and hazardous gases as required. The second airflow channel can serve as a channel for direct airflow, serving as a ventilation channel 12, and is provided with a ventilation valve 32.

[0065] The air outlet side of the purification fan 20 leads to the inlet of the ventilation channel 12 and the inlet of the purification channel 11 .

[0066] Two air flow channels are provided in the purification component 10. When the air needs to be ventilated separately, the ventilation valve 32 can be opened, the purification valve 31 can be closed, and the purification fan 20 can be turned on. The air volume can be discharged from the outlet of the ventilation channel 12 to realize the ventilation mode. When the air needs to be purified separately, the ventilation valve 32 can be closed, the purification valve 31 can be opened, and the purification fan 20 can be turned on. The air volume can be purified by the polluted gas purification unit of the purification channel and discharged to realize the purification mode. Compared with the prior art, the ventilation and purification device provided in this embodiment can realize the dual functions of ventilation and polluted gas purification. It can be assembled in a safety isolation tent. Only one set of equipment needs to be assembled, which is easy to assemble.

[0067] The first and second airflow channels are independent channels and can be arranged adjacent to each other, that is, separated by a barrier. The first airflow channel is used to filter polluted gases, and the second airflow channel is used when polluted gases are not required. The first and second airflow channels can be arranged in a stacked or annular manner. For example, the second airflow channel is an annular airflow channel surrounding the outer periphery of the first airflow channel.

[0068] The first end plate 110 at the outlet end of the first air flow channel has a first air outlet 111, and the air inlet end of the first air flow channel has a first air inlet 112, which serves as the entrance to the purification channel 11; the second end plate 120 at the outlet end of the second air flow channel has a second air outlet 121, and the air inlet end of the second air flow channel has a second air inlet 122, which serves as the entrance to the ventilation channel 12; the second air flow channel surrounds the outer periphery of the first air flow channel, and the second air flow channel can be an integral annular air flow channel, or can include multiple independent air flow channels. In implementation, the second air inlet 122 of each independent air flow channel is connected, serving as the entrance to the ventilation channel 12. There is an air flow gap space between the first end plate 110 and the second end plate 120, and the air flow gap space is respectively connected to each independent second air flow channel 12, the first air outlet 111, and the second air outlet 121. Among them, the second air outlet 121 can serve as the total air outlet of the purification component 10, and different ventilation channels can be selected by adjusting the opening and closing of the ventilation valve 32 and the purification valve 31.

[0069] In practice, the outlet of the ventilation channel 12 and the outlet of the purification channel 11 can be connected to a unified outlet, and the unified outlet can be connected to the safety isolation tent, so as to provide clean and safe air for the people in the safety isolation tent.

[0070] The purification fan 20 includes a motor 21 and a blade area 22. The blade area 22 is arranged on the drive shaft of the motor 21 and generates airflow according to the driving rotation of the drive shaft. The air outlet formed by the blade area 22 is sealed and connected to the inlet of the ventilation channel 12 and the inlet of the purification channel 11.

[0071] The ventilation and purification device proposed in one embodiment of the present invention, based on the ventilation and purification device provided in the above embodiment, may further include: a filter component 40. The filter component 40 has a filter air inlet and a filter air outlet, and the air inlet side of the purification fan 20 can be connected to the filter air outlet of the filter component 30. Therefore, when it is necessary to filter the air separately, the ventilation valve 32 can be opened, the purification valve 31 can be closed, and the purification fan 20 can be turned on. The air volume can be filtered by the filter component 30 for particulate matter, and then discharged from the outlet of the ventilation channel 12 to realize the filtering mode. When it is necessary to purify the air, the ventilation valve 32 can be closed, the purification valve 31 can be opened, and the purification fan 30 can be turned on. The air volume can be filtered by the filter component 30 for particulate matter, and then purified by the polluted gas purification unit of the purification channel 11 and discharged to realize the purification mode.

[0072] The filter component 40 may include a cyclone filter chamber 41, an exhaust fan 42, and a exhaust pipe 43. The cyclone filter chamber 41 includes an air inlet chamber 411, a dust collecting chamber 412, an exhaust chamber 413 and a cyclone filter 414. The air inlet chamber 411 is provided with an air inlet, the air inlet of the cyclone filter 414 is arranged in the air inlet chamber 411, the dust exhaust port of the cyclone filter 414 is arranged in the dust collecting chamber 412, and the air exhaust port of the cyclone filter 414 is arranged in the exhaust chamber 413; the air inlet of the exhaust fan 42 is connected to the dust collecting chamber 412, the first end of the exhaust pipe 43 is connected to the exhaust port of the exhaust fan 42, and the second end of the exhaust pipe 43 can be led to the outside of the air inlet set in the air inlet chamber 411; the air inlet side of the purification fan 20 is connected to the exhaust chamber 413.

[0073] The air inlet of the air inlet chamber 413 can be provided with a sealing cover to prevent external gas from entering the air inlet chamber 413 when ventilation and purification are not needed. The sealing cover can be opened and covered on the outside of the air inlet chamber 413.

[0074] In some embodiments, the second end of the drainage pipe 43 can be used to discharge dust through an independent drainage port defined in the filter element 40. In some embodiments, dust can also be discharged through the air inlet provided in the air inlet chamber 411. When the sealing cover is opened, the second end of the drainage pipe 43 can be directed to the air inlet provided in the air inlet chamber 411. The directions of the air inlet of the air inlet chamber 411 and the drainage port at the second end of the drainage pipe 43 can be different.

[0075] When ventilation and purification are not needed, the second end of the sewage pipe 43 can be set in the air inlet chamber 411, and the sealing cover simultaneously seals the air inlet of the air inlet chamber 411 and the second end of the sewage pipe 43 (the air inlet of the air inlet chamber and the second end of the sewage pipe are sealed in the sealed space formed between the sealing cover and the air inlet chamber).

[0076] The number of the cyclone filters 414 is not limited to one, and may be one or more. For example, a plurality of cyclone filters 414 are arranged in parallel.

[0077] The cyclone filter 414 includes an air duct 4141 and a conical barrel 4142. A cyclone impeller is disposed within the first end of the air duct 4141. The first port of the conical barrel 4142 extends into the second end of the air duct 4141. The first port of the conical barrel 4142 is smaller than the second port of the conical barrel 4142. The air inlet chamber 411, the dust collection chamber 412, and the exhaust chamber 413 are arranged sequentially. The air inlet of the first end of the air duct 4141 is disposed in the air inlet chamber 411, the second end of the air duct 4141 is disposed in the dust collection chamber 412, and the second port of the conical barrel 4142 is disposed in the exhaust chamber 413. The cyclone impeller can be fixed to the first end of the air duct 4141 or can be integrally formed within the first end of the air duct 4141. The specific form of the impeller is not limited.

[0078] During operation, the outside air enters the air inlet chamber 411 from the air inlet of the air inlet chamber 411, and after passing through the cyclone impeller inside the first end of the air duct 4141, a cyclone is generated in the air duct 4141, and the particulate matter with increased weight is swirled to the inner wall of the air duct 4141, and discharged to the dust collecting chamber 412 through the gap between the inner wall of the port at the second end of the air duct 4141 and the outer wall of the first port of the conical cylinder 4142. The lighter clean air flows from the center of the air duct 4141 through the first port of the conical cylinder 4142, and enters the exhaust chamber 413 through the second port of the conical cylinder 4142, thereby completing the screening of particulate matter in the air.

[0079] The air inlet formed by the fan blade area 22 is connected to the exhaust chamber 413. When the purification fan 20 is in operation, a negative pressure area is formed on the air inlet side of the purification fan 20, and a positive pressure area is formed on the air outlet side of the purification fan 20. In the purification mode, the ventilation valve 32 is closed and the purification valve 31 is open. Since the outlet of the ventilation channel 12 and the outlet of the purification channel 11 are connected, if the ventilation valve 32 is not sealed tightly, unpurified air will leak from the ventilation channel 32 and be transported to the safety isolation tent. This leads to excessively high sealing requirements for the ventilation valve 32, significantly increasing production costs. In some embodiments, the ventilation valve 32 may include a first valve disposed at the inlet of the ventilation channel 12 and a second valve disposed at the outlet of the ventilation channel, thereby improving the sealing effect by using two valves. In addition, in the purification mode, when the first valve and the second valve are closed, clean positive pressure gas can be introduced into the ventilation channel 12 between the first valve and the second valve, so that the pressure in the ventilation channel 12 between the first valve and the second valve is greater than the pressure in the purification channel, thereby preventing leakage of contaminated gas from the first valve into the ventilation channel 12. In addition, in the purification mode, the first valve and the second valve are closed, and a negative pressure pipeline can be applied to the ventilation channel 12 between the first valve and the second valve so that the pressure of the ventilation channel 12 between the first valve and the second valve is lower than the pressure of the purification channel, so that the polluted gas leaking from the first valve into the ventilation channel 12 can be discharged through the negative pressure pipeline.

[0080] The inventors discovered that if a dual-channel structure is used to achieve ventilation and purification functions, in order to ensure operational safety, ventilation valves can be set in the ventilation channel and purification valves can be set in the purification channel. During the process of switching from the ventilation function to the purification function, personnel are required to manually close the manual valve in the ventilation channel and electronically open the electric-controlled valve in the purification channel. During the process of switching from the purification function to the ventilation function, personnel are required to manually open the manual valve in the ventilation channel and electronically close the electric-controlled valve in the purification channel, which is cumbersome to operate.

[0081] Figures 12 to 15 This is an embodiment of the present invention, based on the ventilation and purification device described in the above embodiment, please refer to Figures 12 to 15 A valve assembly for a dual-channel air ventilation and purification device according to one embodiment of the present invention includes:

[0082] A valve base 34 is provided with a ventilation valve port 34a, a purge valve port 34b, and a negative pressure valve port 34c;

[0083] The ventilation valve core body 321 is provided at the ventilation valve port 34a;

[0084] The purge valve core body 311 is provided at the purge valve port 34b;

[0085] The negative pressure valve core 331 is provided at the negative pressure valve port 34c;

[0086] The operating component 35 for jointly controlling the ventilation valve core body 321, the purification valve core body 311 and the negative pressure valve core body 331 is respectively connected to the ventilation valve core body 321, the purification valve core body 311 and the negative pressure valve port, and is used to receive the rotational force of external operation. The operating component transmits the rotational force received to the ventilation valve core body 321, the purification valve core body 311 and the negative pressure valve core body 331, so that the ventilation valve core body 321 changes from a closed state closed to the ventilation valve port to an open state opened to the ventilation valve port, the purification valve core body 311 changes from an open state opened to the purification valve port to a closed state closed to the purification valve port, and the negative pressure valve core body 331 changes from an open state opened to the negative pressure valve port to a closed state closed to the negative pressure valve port.

[0087] In the technical solution provided by the embodiment of the present invention, during the operation of the ventilation mode, the operator only needs to apply a rotational force to the operating component once to change the ventilation valve core body 321 from the closed state closed to the ventilation valve port to the open state opened to the ventilation valve port, the purification valve core body 311 from the open state opened to the purification valve port to the closed state closed to the purification valve port, and the negative pressure valve core body 331 from the open state opened to the negative pressure valve port to the closed state closed to the negative pressure valve port. Compared with the existing technology, there is no need to operate the electrically controlled purification valve 31 and the electrically controlled negative pressure valve, and the operation process is more convenient.

[0088] The inventors found that: because the dual-channel air ventilation and purification device adopts a dual-channel structure, that is, the purification component 10 in the dual-channel air ventilation and purification device includes a ventilation channel 12 and a purification channel 11 arranged in parallel, and the outlet of the ventilation channel 12 and the outlet of the purification channel 11 can be connected to a unified outlet, and the unified outlet is connected to the place to be supplied with air during use. Since the same purification fan 20 is used to the inlet side of the ventilation channel 12 and the inlet of the purification channel 11, when the dual-channel air ventilation and purification device is in a polluted gas environment, after the purification mode is turned on, if the external environment no longer has a polluted gas environment, it is still not possible to directly switch to the ventilation mode. Since in the purification mode, the polluted gas will remain in the internal space such as the purification fan 20 of the dual-channel air ventilation and purification device, it is easy for the polluted gas retained in the dual-channel air ventilation and purification device to be discharged from the ventilation channel 12 to the place to be supplied with air, thereby causing a dangerous accident. Therefore, after turning on the purification mode, it is necessary to first clean the toxic and harmful substances inside the dual-channel air ventilation and purification device before turning on the ventilation mode, so as to ensure the safety of use. If the ventilation valve 32 and the purge valve 31 are uniformly set as electronically controlled valves, operators who are not familiar with the operating specifications of the equipment may easily forget to directly remotely control the ventilation valve 32 and the purge valve 31, thereby switching the dual-channel air ventilation and purification device from purification mode to ventilation mode. Alternatively, there is the possibility that non-operating personnel may mistakenly operate the remote control of the dual-channel air ventilation and purification device, directly switching the purification mode to ventilation mode, which may cause a serious safety accident.

[0089] The operating component has a manual operating end, and by manually applying a rotational force to the operating end, the ventilation valve core 321 is switched from a closed state (closed to the ventilation valve port) to an open state (open to the ventilation valve port), the purification valve core 311 is switched from an open state (open to the purification valve port) to a closed state (closed to the purification valve port), and the negative pressure valve core 331 is switched from an open state (open to the negative pressure valve port) to a closed state (closed to the negative pressure valve port). This allows the operator of the dual-channel air ventilation and purification device to manually access the dual-channel air ventilation and purification device to manually open the ventilation valve core 321 of the ventilation channel 12 in the purification component 10 of the dual-channel air ventilation and purification device when switching from purification mode to ventilation mode. This prevents the possibility of erroneous switching operations that may occur if toxic substances remaining in the air handling device are not cleared before switching from purification mode to ventilation mode.

[0090] In some embodiments, the valve assembly of the above-mentioned dual-channel air ventilation and purification device also includes: a force storage component 36, which is connected to the operating component 35, and is used to receive and store the rotational force applied to the operation through the operating component 35; an electrically controlled locking component 37, which is used to lock the operating component 35 to limit the rotation of the operating component 35, and to release the lock of the operating component 35 by electrically controlling the electrically controlled locking component 37.

[0091] Due to the existence of the force storage component, when the ventilation mode is turned on, the force storage component can store the rotational force applied by the operator, and when the purification mode is turned on, the stored rotational force can be released.

[0092] In realizing the joint control of the ventilation valve core 321, the purification valve core 311, and the negative pressure valve core 331, the operating component 35 includes a rotating shaft, which is rotatably arranged on the valve base 34. The ventilation valve core 321, the purification valve core 311, and the negative pressure valve core 331 are arranged on the rotating shaft. With the rotation of the rotating shaft, one end of the rotating shaft is exposed and serves as the operating end. It should be noted that the rotating shaft is not limited to the first rotating shaft part, and should be understood to include at least one shaft. In practice, it can be understood as a rotating shaft mechanism including a shaft, or an shaft mechanism connected by multiple shafts or multiple transmission mechanisms, which can realize the operating mechanism of the joint control of the ventilation valve core 321, the purification valve core 311, and the negative pressure valve core 331. In this embodiment, only a dual-channel air ventilation and purification device adapted to a rectangular structure is taken as an example. The corresponding valve assembly housing is a rectangular structure. The valve base 34 includes a rectangular bottom shell 341 and a rectangular side wall 342 on the periphery of the rectangular bottom shell; the rotating shaft includes a first shaft 351, a second shaft 352, a universal coupling 353, and a third shaft 354; the ventilation valve port, the purification valve port, and the negative pressure valve port are arranged on a diagonal line in the rectangular shell bottom 341; the ventilation valve core body 321, the purification valve core body 311, and the negative pressure valve core body 331 are arranged on the first shaft 351; The second shaft 352 and the first shaft 351 are cross-connected via a worm gear. The first end of the third shaft 354 is connected to the first end of the second shaft 352 via the universal coupling 353. The second end of the third shaft 354 is perpendicular to the first sidewall of the rectangular sidewall. The operating end is the second end of the third shaft 354. The first sidewall is provided with a manipulation hole 343. The second end of the third shaft 354 is an inner polygonal socket or an outer polygonal plug, extending into the manipulation hole 343. The inner polygonal socket or outer polygonal plug is exposed through the manipulation hole 343. In this embodiment, the valve assembly arranges the ventilation valve port, the purge valve port, and the negative pressure valve port on a diagonal line of the rectangular housing base. This allows for a more compact arrangement of the three valve ports than would be possible with a horizontal and vertical arrangement of the three valve ports. Furthermore, the worm gear and universal coupling 353 allow the operating end to be perpendicular to the sidewall of the valve base 34, facilitating the application of rotational force to the inner polygonal socket or outer polygonal plug through the manipulation hole by an external tool.

[0093] The force storage component can be an elastic material element to store the rotational force, such as a torque spring or an elastic rope. Taking the torque spring as an example, the torque spring is sleeved on the second end of the second shaft 352, the first end of the torque spring is fixed to the valve base 34, and the second end of the torque spring is fixed to the second shaft 352.

[0094] The electrically controlled locking component can be used to lock the operating component to restrict the forward and reverse rotation of the locking component. When the dual-channel air ventilation and purification device is in ventilation mode, it is necessary to first electrically control the electrically controlled locking component to release the locking of the operating component. Thereafter, a rotational force is applied to the operating component to cause the valve core to transition from a closed state (closed to the valve port) to an open state (open to the valve port).

[0095] Among them, the above-mentioned operation process is relatively cumbersome. In order to simplify the operation steps, the following implementation method can be adopted: wherein, the operating component is used to receive the rotational force in the first direction of the external operation, and the operating component transmits the first direction rotational force to the valve core body, so that the valve core body changes from a closed state closed to the valve port to an open state open to the valve port; the electric control locking component is used to lock the operating component to limit the rotation of the operating component in the second direction, and release the lock on the rotation of the operating component in the second direction through electric control operation.

[0096] In a specific implementation, the following structure can be used, but is not limited to the following specific structure: the electrically controlled locking component includes: an electric drive mechanism, a ratchet, and a pawl; the ratchet is disposed on the third shaft, the pawl is disposed on the valve base 34, and the pawl is unidirectionally engaged with the ratchet; the electric drive mechanism is used to drive the pawl to separate from the ratchet. The electric drive mechanism includes: a motor, the motor is disposed on the valve base 34, and the output shaft of the motor is provided with a paddle. When the output shaft of the motor rotates from a first angle to a second angle, the paddle paddle moves the pawl to separate from the ratchet. When the dual-channel air ventilation and purification device is in ventilation mode, the ratchet and pawl structure cooperate, and the electrically controlled locking component does not restrict the rotation of the operating component in the first direction. It is no longer necessary to electrically operate the electrically controlled locking component to release the locking of the operating component. Instead, a rotational force in the first direction can be directly applied to the operating component, causing the valve core body to transition from a closed state (closed to the valve port) to an open state (open to the valve port), making the operation process more convenient.

[0097] Based on the same invention technology concept, an embodiment provided by the present invention can be based on the valve assembly described in the above embodiment, please refer to Figures 12 to 15 An embodiment of the present invention provides a dual-channel air ventilation and purification device, comprising:

[0098] The filter component 40 has an exhaust chamber 413 for discharging filtered particulate matter;

[0099] The purification component 10 includes a ventilation channel 12, a purification channel 11 and a negative pressure channel 13;

[0100] a purification fan 20, wherein the air inlet side of the purification fan 20 is connected to the exhaust chamber 413, and the air outlet side of the purification fan 20 is connected to the entrance of the ventilation channel 12 and the entrance of the purification channel 11;

[0101] The negative pressure channel 13 is connected to the exhaust chamber 413 and the ventilation channel 12 .

[0102] Valve assembly, including:

[0103] A valve base 34 is provided with a ventilation valve port 34a, a purge valve port 34b, and a negative pressure valve port 34c;

[0104] The ventilation valve core body 321 is arranged at the ventilation valve port 34a;

[0105] The purge valve core body 311 is provided at the purge valve port 34b;

[0106] The negative pressure valve core 331 is provided at the negative pressure valve port 34c;

[0107] The operating component for jointly controlling the ventilation valve core body 321, the purification valve core body 311 and the negative pressure valve core body 331 is respectively connected to the ventilation valve core body 321, the purification valve core body 311 and the negative pressure valve port, and is used to receive the rotational force of external operation. The operating component transmits the rotational force received to the ventilation valve core body 321, the purification valve core body 311 and the negative pressure valve core body 331, so that the ventilation valve core body 321 changes from a closed state closed to the ventilation valve port to an open state opened to the ventilation valve port, the purification valve core body 311 changes from an open state opened to the purification valve port to a closed state closed to the purification valve port, and the negative pressure valve core body 331 changes from an open state opened to the negative pressure valve port to a closed state closed to the negative pressure valve port.

[0108] The ventilation valve port is connected to the ventilation channel 12. When the ventilation valve core body 321 changes from a closed state closed to the ventilation valve port to an open state opened to the ventilation valve port, the ventilation channel 12 changes from a blocked state to a conductive state. The purification valve port is connected to the purification channel 11. When the purification valve core body 311 changes from an open state opened to the purification valve port to a closed state closed to the purification valve port, the purification channel 11 changes from a conductive state to a blocked state. The negative pressure valve port is connected to the negative pressure channel. When the negative pressure valve core body 331 changes from an open state opened to the negative pressure valve port to a closed state closed to the negative pressure valve port, the negative pressure channel changes from a conductive state to a blocked state.

[0109] In the technical solution provided by the embodiment of the present invention, during the operation of the ventilation mode, the operator only needs to apply a rotational force to the operating component once to change the ventilation valve core body 321 from the closed state closed to the ventilation valve port to the open state opened to the ventilation valve port, the purification valve core body 311 from the open state opened to the purification valve port to the closed state closed to the purification valve port, and the negative pressure valve core body 331 from the open state opened to the negative pressure valve port to the closed state closed to the negative pressure valve port. Compared with the existing technology, there is no need to operate the electrically controlled purification valve 31 and the electrically controlled negative pressure valve, and the operation process is more convenient.

[0110] Wherein, the negative pressure channel can be an independently arranged connecting pipe, or it can be an airflow pipeline structure constructed inside the purification component 10. The first end of the negative pressure channel is connected to the exhaust chamber 413, and the second end of the negative pressure channel is connected to the negative pressure port of the ventilation channel 12. In some embodiments, the inlet of the ventilation channel 12 and the negative pressure port of the ventilation channel 12 are located at the first end of the ventilation channel 12 (the inlet of the ventilation channel 12 and the negative pressure port of the ventilation channel 12 are connected in parallel to the first end of the ventilation channel 12), and the outlet of the ventilation channel 12 is located at the second end of the ventilation channel 12. The polluted gas leaked into the ventilation channel 12 from the inlet ventilation valve core body 321 of the ventilation channel 12 will be discharged into the negative pressure channel from the negative pressure port of the ventilation channel 12 closer to the inlet of the ventilation channel 12, which can prevent the polluted gas from remaining in the ventilation channel 12.

[0111] During implementation, the outlet of the ventilation channel 12 and the outlet of the purification channel 11 are connected. Since the outlet of the ventilation channel 12 and the outlet of the purification channel 11 are connected, in the purification mode, part of the clean air discharged from the outlet of the purification channel 11 will be drawn away from the ventilation channel 12 by the negative pressure channel, resulting in a large air flow loss.

[0112] In other embodiments, this can be achieved by adjusting the ventilation volume of the negative pressure channel. In practice, the inner diameter of the negative pressure channel is smaller than the inner diameter of the ventilation channel 12, so that the negative pressure channel can achieve a small amount of airflow. The specific inner diameter of the negative pressure channel can be determined based on the leakage volume of the ventilation valve core 321. The ventilation volume of the negative pressure channel can be slightly greater than or equal to the leakage volume of the ventilation valve core 321.

[0113] When the first end of the negative pressure channel is connected to the exhaust chamber 413, the first end of the negative pressure channel is kept in a stable negative pressure environment. It is necessary to seal the air outlet side of the purification fan 20 to the inlet of the ventilation channel 12 and the inlet of the purification channel 11, that is, the air volume on the air outlet side of the purification fan 20 is not connected to the exhaust chamber 413. In practice, the ventilation channel 12 is arranged on the periphery of the purification channel 11; the air outlet side of the purification fan 20 is an annular air outlet, and the annular air outlet is sealed and buckled with the annular inlet of the ventilation channel. The annular air outlet is located in the first area of ​​the inner wall of the exhaust chamber 413, and the first end of the negative pressure channel is connected to the second area of ​​the inner wall of the exhaust chamber 413.

[0114] In the filter mode, the ventilation valve core 321 is opened, the negative pressure valve core 331 is closed, and the purification valve core 311 is closed. When the purification fan is turned on, since the negative pressure valve of the negative pressure channel is closed, the air filtered by the filter component 40 will be prevented from being drawn away by the negative pressure channel through the ventilation channel 12 and returned to the exhaust chamber 413, thereby greatly reducing the air volume drawn away by the negative pressure channel and returned to the exhaust chamber 413 in the ventilation mode.

[0115] In the purification mode, the ventilation valve core 321 is closed, the negative pressure valve core 331 is opened, and the purification valve core 311 is opened; the purification fan 20 is turned on. Under the action of the purification fan 20, negative pressure is generated in the exhaust chamber 413 and the negative pressure channel, so that the air after the particulate matter is filtered by the filter component 40 is blown from the exhaust chamber 413 to the inlet of the ventilation channel 12 and the inlet of the purification channel 11, generating positive pressure at the inlet of the ventilation channel 12 and the inlet of the purification channel 11. If the ventilation valve core 321 is not sealed tightly, part of the filtered polluted gas and air will be discharged after being purified by the purification channel 11, and part of the filtered polluted gas and air will leak into the ventilation channel 12 due to the closing of the first ventilation valve. Compared with the prior art, because the pressure in the exhaust chamber 413 on the negative pressure channel side is lower than the pressure in the ventilation channel 12, the leaked polluted gas is discharged into the exhaust chamber 413 through the negative pressure channel, and will not be discharged through the unified outlet connected to the outlet of the ventilation channel 12 and the outlet of the purification channel 11, thereby improving the safety of the purification mode. At the same time, compared with the solution of using an additional channel pressure regulating device to regulate the pressure of the negative pressure channel, the production cost can be reduced, and it is only necessary to construct a negative pressure channel between the exhaust chamber 413 and the ventilation channel 12.

[0116] In some embodiments, the ventilation channel 12 is arranged on the periphery of the purification channel 11; in implementation, the ventilation valve ports are a pair, which are arranged on both sides of the purification valve port, and the negative pressure valve ports are a pair, which are arranged on both sides of the purification valve port. A pair of the ventilation valve ports, the purification valve ports, and a pair of the negative pressure valve ports are arranged on a diagonal line in the bottom of the rectangular shell.

[0117] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0118] It is understood that the related features in the above devices can be referenced to each other. In addition, the "first", "second", etc. in the above embodiments are used to distinguish between the embodiments, and do not represent the advantages and disadvantages of the embodiments.

[0119] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0120] Similarly, it should be understood that in order to streamline the present disclosure and aid understanding of one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed apparatus should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Accordingly, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the invention.

[0121] It will be appreciated by those skilled in the art that the components of the apparatus in the embodiment may be adaptively changed and arranged in one or more apparatuses different from the embodiment. The components in the embodiment may be combined into one component, and furthermore they may be divided into a plurality of subcomponents. All features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all components of any apparatus so disclosed may be combined in any combination, except that at least some of such features are mutually exclusive. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0122] Furthermore, those skilled in the art will appreciate that although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination. The various component embodiments of the present invention may be implemented in hardware, or in combinations thereof.

[0123] It should be noted that the above embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by a person skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of parts or components not listed in the claims. The word "a" or "an" preceding a part or component does not exclude the presence of a plurality of such parts or components. The invention may be implemented by means of an apparatus comprising several different parts. In claims enumerating several parts, several of these parts may be embodied by the same component item. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

[0124] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiment based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A valve assembly for a dual-channel air ventilation and purification device, characterized in that: include: A valve base body, wherein the valve base body is provided with a ventilation valve port, a purification valve port, and a negative pressure valve port; A ventilation valve core body is arranged at the ventilation valve port; A purification valve core body is arranged at the purification valve port; A negative pressure valve core body is arranged at the negative pressure valve port; an operating component for jointly controlling the ventilation valve core body, the purification valve core body, and the negative pressure valve core body, respectively connected to the ventilation valve core body, the purification valve core body, and the negative pressure valve port, and configured to receive a rotational force from an external operation, wherein the operating component transmits the rotational force received to the ventilation valve core body, the purification valve core body, and the negative pressure valve core body, so that the ventilation valve core body changes from a closed state closed at the ventilation valve port to an open state opened at the ventilation valve port, the purification valve core body changes from an open state opened at the purification valve port to a closed state closed at the purification valve port, and the negative pressure valve core body changes from an open state opened at the negative pressure valve port to a closed state closed at the negative pressure valve port; The operating component includes a rotating shaft, which is rotatably arranged on the valve base. The ventilation valve core body, the purification valve core body and the negative pressure valve core body are arranged on the rotating shaft and are linked with the rotation of the rotating shaft. One end of the rotating shaft is exposed and serves as an operating end. The valve base comprises a rectangular bottom shell and a rectangular side wall around the outer periphery of the rectangular bottom shell; The rotating shaft includes a first shaft, a second shaft, a universal joint, and a third shaft; The ventilation valve port, the purification valve port, and the negative pressure valve port are arranged on a diagonal line in the rectangular bottom shell; The ventilation valve core body, the purification valve core body and the negative pressure valve core body are arranged on the first shaft; The second shaft and the first shaft are connected via a worm gear cross transmission; The first end of the third shaft is connected to the first end of the second shaft through the universal joint, the second end of the third shaft is perpendicular to the first side wall of the rectangular side wall, the operating end is the second end of the third shaft, the first side wall is provided with a control through hole, the second end of the third shaft is an inner polygonal jack or an outer polygonal plug, extending to the control through hole, and the inner polygonal jack or the outer polygonal plug is exposed through the control through hole.

2. The valve assembly of the dual-channel air ventilation and purification device according to claim 1, characterized in that: Also includes: a force storage component connected to the operating component, and configured to receive and store the rotational force exerted by the operation through the operating component; The electrically controlled locking component is used to lock the operating component to limit the rotation of the operating component and to release the locking of the operating component through an electrically controlled operation.

3. The valve assembly of the dual-channel air ventilation and purification device according to claim 2, characterized in that: The force storage component includes a torsion spring. The torsion spring is sleeved on the second end of the second shaft. The first end of the torsion spring is fixed to the valve base, and the second end of the torsion spring is fixed to the second shaft.

4. The valve assembly of the dual-channel air ventilation and purification device according to claim 3, characterized in that: The electric locking component includes: an electric drive mechanism, a ratchet, and a pawl; The ratchet is arranged on the third shaft, the pawl is arranged on the valve base, and the pawl is one-way clamped with the ratchet; The electric drive mechanism is used to drive the pawl to separate from the ratchet wheel.

5. The valve assembly of the dual-channel air ventilation and purification device according to claim 4, characterized in that: The electric drive mechanism includes a motor, which is arranged on the valve base. The output shaft of the motor is provided with a paddle. When the output shaft of the motor rotates from a first angle to a second angle, the paddle drives the pawl to separate from the ratchet.

6. The valve assembly of the dual-channel air ventilation and purification device according to any one of claims 1 to 5, characterized in that: At least one of the ventilation valve core body, the purification valve core body, and the negative pressure valve core body is a valve plate.

7. A dual-channel air ventilation and purification device, characterized in that: include: A filter component having an exhaust chamber for discharging filtered particulate matter; Purification components, including ventilation channels, purification channels and negative pressure channels; a purification fan, wherein the air inlet side of the purification fan is connected to the exhaust chamber, and the air outlet side of the purification fan is connected to the entrance of the ventilation channel and the entrance of the purification channel; Wherein, the negative pressure channel is connected to the exhaust chamber and the ventilation channel; The valve assembly according to any one of claims 1 to 6 above; wherein, The ventilation valve port is connected to the ventilation channel. When the ventilation valve core changes from a closed state at the ventilation valve port to an open state at the ventilation valve port, the ventilation channel changes from a blocked state to a connected state. The purge valve port is connected to the purge passage, and when the purge valve core body changes from an open state at the purge valve port to a closed state at the purge valve port, the purge passage changes from a conducting state to a blocking state; The negative pressure valve port is connected to the negative pressure channel. When the negative pressure valve core changes from an open state at the negative pressure valve port to a closed state at the negative pressure valve port, the negative pressure channel changes from a conducting state to a blocking state.

8. The dual-channel air ventilation and purification device according to claim 7, characterized in that: The ventilation channel is arranged on the periphery of the purification channel; The ventilation valve ports are a pair, which are arranged on both sides of the purification valve port. The negative pressure valve ports are a pair, which are arranged on both sides of the purification valve port. The pair of ventilation valve ports, the purification valve ports, and the pair of negative pressure valve ports are arranged on a diagonal line in the rectangular bottom shell.

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