Three-layer coaxial air passage two-position five-way valve

Abstract

The present application relates to two position five way valve field, especially to a kind of three-layer coaxial air passage two position five way valve, including hollow valve core, the outer side of the valve core is provided with a plurality of annular partitions and a plurality of longitudinal partitions spliced into a plurality of intermediate layer air passages;Gas leakage cover, the valve core is equipped with gas leakage cover, the outer side of the gas leakage cover is provided with a plurality of annular ribs and a plurality of longitudinal ribs spliced into a plurality of outer layer air passages;Shell, the gas leakage cover is equipped with shell, the shell is provided with common output, atmospheric air inlet, atmospheric air outlet, inlet passage and outlet passage;Turbine fan, for the gas flowing through is pressurized;Motor, the motor is connected with the end of gas leakage cover, the common output, the atmospheric air inlet and the atmospheric air outlet are communicated with atmosphere, the inlet passage is communicated with the turbine fan inlet, the outlet passage is communicated with the turbine fan output;The volume of valve group is reduced by the motor driving valve core movement to realize the switching of airflow direction.

Description

Technical Field

[0001] This invention relates to a two-position five-way valve, specifically to a three-layer coaxial two-position five-way valve. Background Technology

[0002] Existing gas flow direction switching is mainly achieved by connecting two two-position three-way valves in parallel, such as... Figure 1 As shown, the existing valve group consists of two two-position three-way valves, valve A and valve B, connected in parallel at both ends of the turbine. Valve A and valve B have a total of six ports: A1, A2, A3, B1, B2, and B3. Among them, A3 and B3 are two common ports of valve A and valve B, which are always in the connected state in different states. A1, A2, B1, and B2 are switching ports, which are in the connected or disconnected state as the state changes.

[0003] exist Figure 1 In the configuration, common interface A3 connects to the turbine's inlet, and common interface B3 connects to the turbine's outlet. Both A1 and B1 are connected to the atmosphere. A2 and B2 converge at interface C, forming a common output terminal. When the valve assembly is in intake mode, A1 connects to A3, and B3 connects to B2. Through this formed pathway, the turbine draws in air from the atmosphere, and the gas ultimately flows to the common output terminal C, creating positive pressure. Figure 2 As shown, when the valve group switches to the exhalation mode, A2 and A3 are connected, and B3 and B1 are connected. Through the formed passage, the turbine draws in air from the common output end C, and the gas finally flows into the atmosphere through the interface B1, thus creating a negative pressure at the common output end.

[0004] The two-position five-way valve disclosed in CN216590078U includes a valve body, a valve core, a first air inlet, a first air outlet, and a second air outlet. The valve body has a transverse inner cavity, one end of which is covered by a positioning seat, and the other end of which is covered by a valve cover. A sleeve is provided inside the inner cavity, and a valve core is provided inside the sleeve and is slidably connected to the sleeve wall. An air inlet is provided on the valve cover, which is connected to one end of the valve core. A return spring is provided between the other end of the valve core and the positioning seat. The valve body has a first air inlet on the upper side and a first air outlet and a second air outlet on the lower side. The conventional two-position five-way valve disclosed in this article cannot realize the function of airflow reversal. Summary of the Invention

[0005] This invention designs a two-position five-way valve. Through spatial structure design, it achieves positive and negative pressure switching under the condition of one motor operation, reducing costs and making the valve assembly smaller.

[0006] The present invention achieves the above effects using the following technical solutions:

[0007] First, a three-layer coaxial two-position five-way valve is provided, including...

[0008] The valve core is hollow, and the outer side of the valve core is provided with several annular baffles and several longitudinal baffles spliced ​​together to form several intermediate air passages;

[0009] An air leak cover is provided on the outside of the valve core. The outer side of the air leak cover is provided with several annular ribs and several longitudinal ribs spliced ​​together to form several outer air passages.

[0010] The outer shell is fitted over the vent cover. The outer shell has a common outlet, an atmospheric inlet, an atmospheric outlet, an inlet channel, and an outlet channel.

[0011] A turbine fan is used to pressurize flowing gas;

[0012] The motor is connected to the end of the air leak cover and is used to drive the valve core to reciprocate in the longitudinal direction inside the air leak cover.

[0013] The common output port is used to generate positive and negative pressure. The atmospheric inlet and atmospheric outlet are connected to the atmosphere. The air inlet channel is connected to the turbine inlet, and the air outlet channel is connected to the turbine outlet.

[0014] Furthermore, the intermediate air passage includes a first air passage, a transition air passage, and an outlet air passage arranged in sequence in a fan shape. The first air passage is divided into an inlet air passage and an outlet air passage by a longitudinal partition. The inlet air passage and the outlet air passage are connected to the inside of the valve core. One end of the outlet air passage is not blocked by a longitudinal partition, forming an opening. The transition air passage is used to allow airflow to flow between the outlet passage and the common outlet. The inlet air passage and the outlet air passage are used to allow airflow to flow inside the valve core. The outlet air passage allows airflow to flow into the atmospheric outlet.

[0015] Furthermore, the outer air duct includes an annular ventilation duct, which is divided into a second air duct and a third air duct by two longitudinal ribs. A first air leakage hole is provided on the side of the air leakage hood near the ventilation duct, a second air leakage hole is provided on the second air duct, and a third air leakage hole is provided on the third air duct. The first, second, and third air leakage holes are used to allow airflow to smoothly enter and exit the air leakage hood, thereby achieving airflow diversion.

[0016] Furthermore, one end of the air leak cover is sealed and detachably connected to the motor, while the other end is open. The opening is inserted into the inner wall of the outer shell and communicates with the atmospheric air inlet. The opening allows external gas to enter the air leak cover and facilitates airflow. At the same time, the detachable connection between the motor and the air leak cover also facilitates the assembly and maintenance of this device.

[0017] Furthermore, the first vent hole is connected to the air inlet channel, the second vent hole is connected to the common outlet, and the third vent hole is connected to the air outlet channel; by connecting the corresponding channels to the through holes, the airflow can flow in the preset manner to achieve the desired effect.

[0018] Furthermore, the motor drives the valve core to move back and forth, sequentially connecting the transition air passage and the overflow air passage alternately with the third air leakage hole, the transition air passage and the inlet air passage alternately with the second air leakage hole, and the outlet air passage intermittently with the first air leakage hole; the motor drives the valve core to move, so that the intermediate air passage and the outer air passage can cooperate with each other in spatial structure, thereby realizing the switching of positive and negative pressure at the common output port.

[0019] Furthermore, an irregularly shaped baffle is provided at the atmospheric inlet, which is inserted and matched with the end of the valve core. The end of the valve core is inserted and matched with the inner side of the baffle. A fan-shaped flow channel for external gas to enter is formed between the outer wall of the baffle and the inner wall of the outer shell. The baffle allows external gas to enter the device smoothly and also has a sealing effect, separating the atmospheric inlet and the atmospheric outlet.

[0020] Furthermore, the baffle has two contact surfaces that contact the sides of the two longitudinal partitions at the end of the valve core; the two contact surfaces on the baffle position the valve core in the circumferential direction, making it difficult for it to rotate along the axis and only able to move in the longitudinal direction.

[0021] Furthermore, one end of the valve core is detachably connected to the output shaft of the motor via a nut, and the other end is open, with a plug fitted at the opening; the valve core can be easily connected to the motor through the opening, and the plug ensures that the valve core is sealed during operation.

[0022] Furthermore, the vent cover is provided with an installation edge, and the installation edge is detachably connected to the end face of the outer shell by bolts; the bolts facilitate the assembly of the outer shell and the vent cover, making replacement and maintenance convenient.

[0023] The present invention has the following beneficial effects: by driving the valve core to move by a motor, the cooperation between the intermediate air passage and the outer air passage can realize the switching between positive and negative pressure at the common output port, and the turbine fan does not change direction during operation, so the turbine fan can always keep working normally, improving work efficiency. The structure of this device is ingenious, and by making reasonable use of the spatial structure, only one motor is needed to achieve the required functions, which is lower in cost. Compared with existing valve groups, it occupies a smaller volume and the structure is greatly simplified, making it more convenient to install and assemble. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0025] Figure 1 Airway diagram of the existing valve group in intake mode;

[0026] Figure 2 This is an airway diagram under the exhalation mode of the existing valve assembly.

[0027] Figure 3 This is a three-dimensional structural diagram of this embodiment;

[0028] Figure 4 for Figure 3 Rear view;

[0029] Figure 5 This is a cross-sectional view in the inhalation mode of this embodiment;

[0030] Figure 6 This is a cross-sectional view in the exhalation mode of this embodiment;

[0031] Figure 7 This is a schematic diagram of the interlaminar airway structure in this embodiment;

[0032] Figure 8 for Figure 7 Rear view;

[0033] Figure 9 This is a schematic diagram of the outer airway structure in this embodiment;

[0034] Figure 10 for Figure 9 Rear view;

[0035] Figure 11 This is a side view of this embodiment;

[0036] Figure 12 This is a stepped sectional view of this embodiment;

[0037] Figure 13 This is the aerodynamic diagram of the common output port under positive pressure in this embodiment;

[0038] Figure 14 This is a pneumatic diagram of the common output port under negative pressure in this embodiment;

[0039] Figure 15 This is a cross-sectional view of the common output port under positive pressure in this embodiment;

[0040] Figure 16 This is a first cross-sectional view of the common output port under negative pressure conditions in this embodiment;

[0041] Figure 17 This is a second cross-sectional view of the common output port in the negative pressure state of this embodiment. Detailed Implementation

[0042] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0044] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] This invention provides a three-layer coaxial two-position five-way valve, such as... Figure 3 , Figure 4 and Figure 5 As shown, it includes a hollow valve core 101, a cylindrical air leak cover 201 fitted over the valve core 101, and an outer shell 301 fitted over the air leak cover 201. The valve core 101, the air leak cover 201 and the outer shell 301 are wrapped together to form a three-layer structure, and the valve core 101, the air leak cover 201 and the outer shell 301 are all in sealed contact.

[0047] A detachable motor 401 is installed on the end face of the vent 201. The output shaft of the motor 401 is detachably connected to the valve core 101 via a nut. The valve core 101 is open at one end of the motor 401. When the valve body needs to be assembled, the output shaft of the motor 401 is passed through the end face of the valve core 101, and then the nut is installed on the output shaft of the motor 401 through the opening of the valve core 101, thereby installing the motor 401 and the valve core 101 together. Then, a plug 102 is installed at the opening of the valve core 101 to seal the inside of the valve core 101. When the motor 401 is working, it drives the valve core 101 to reciprocate in the longitudinal direction within the vent 201.

[0048] Meanwhile, the vent cover 201 has an installation edge, which is detachably connected to the outer shell 301 by bolts. At this time, the vent cover 201 and the outer shell 301 are essentially fixed to each other. In this embodiment, four protrusions connected to the outer shell 301 by bolts are provided on the installation edge of the vent cover 201 in the circumferential direction.

[0049] Specifically, in this embodiment, such as Figure 1 and Figure 2 As shown, the outer casing 301 has an atmospheric inlet 320 on its end face and an atmospheric outlet 330 on its side. Both the atmospheric inlet 320 and the atmospheric outlet 330 are connected to the atmosphere. At the same time, the outer casing 301 has a common outlet 310 on its side. The common outlet 310 can generate positive and negative pressure and can be connected to a ventilator.

[0050] Similarly, the outer casing 301 is provided with an air intake channel 340 and an air outlet channel 350 on its side. In order to pressurize the gas and create positive and negative pressure at the common outlet 310, the air intake channel 340 is connected to the air intake of the turbine fan 501, and the air outlet channel 350 is connected to the air outlet of the turbine fan 501. The turbine fan 501 pressurizes the gas flowing through it. It is equivalent to the turbine fan 501 drawing in air from the air intake channel 340 and blowing air into the air outlet channel 350 when it is working.

[0051] Specifically, in this embodiment, such as Figure 13 and Figure 14 As shown, the gas flow direction is as follows:

[0052] When the common outlet 310 generates positive pressure, it is equivalent to supplying gas into the ventilator. Outside gas enters the device through the atmospheric inlet 320, then enters the turbine fan 501 through the inlet channel 340, and re-enters the device through the outlet channel 350, and is discharged from the common outlet 310 to supply gas to the ventilator.

[0053] When the common outlet 310 generates negative pressure, it is equivalent to drawing in the exhaust gas from the ventilator. The exhaust gas generated by the ventilator enters the device through the common outlet 310, then enters the turbine fan 501 through the air inlet channel 340, and then re-enters the device through the air outlet channel 350 and is discharged through the atmospheric outlet 330.

[0054] To prevent contamination of the ventilator, the atmospheric inlet 320 is equipped with filter material to filter the inhaled air, while the exhaust air is waste gas. Therefore, the atmospheric outlet 330 does not need to be equipped with filter material.

[0055] To achieve the aforementioned gas flow direction, specifically, as follows: Figure 7 and Figure 8 As shown, in this embodiment, the valve core 101 has several annular baffles and several longitudinal baffles on its side. The annular baffles and longitudinal baffles are interleaved to form several intermediate air passages. The intermediate air passages are in sealed contact with the inner side of the leak cover 201. Starting from one end of the motor 401, the intermediate air passages include a first air passage, a transition air passage 120 and an outlet air passage 130 arranged in sequence. The first air passage, the transition air passage 120 and the outlet air passage 130 are all arranged in a fan shape on the outer side of the valve core 101. At the same time, a longitudinal baffle is provided in the middle of the first air passage to divide it into an inlet air passage 110 and an overflow air passage 111. The inlet air passage 110 and the outlet air passage 130 are both connected to the interior of the valve core 101. One end of the overflow air passage 111 is not blocked by a longitudinal baffle, so it forms an opening. When gas enters the overflow air passage 111, it can flow out from its opening.

[0056] like Figure 9 and Figure 10 As shown, the outer side of the air leak cover 201 is provided with several annular ribs and several longitudinal ribs. The annular ribs and longitudinal ribs are interlocked to form an annular outer air passage. The outer air passage is in sealed contact with the inner wall of the outer shell 301. The outer air passage includes a ventilation passage, in which two longitudinal ribs are provided to form a second air passage 210 and a third air passage 220. At the same time, a first air leak hole 202 is provided on the side of the air leak cover 201 near the ventilation passage, a second air leak hole 211 is provided on the second air passage 210, and a third air leak hole 221 is provided on the third air passage 220.

[0057] Specifically, in this embodiment, such as Figure 5 and Figure 6 As shown, the first vent 202 is connected to the air inlet channel 340 on the outer casing 301, the second vent 211 is connected to the common outlet 310 on the outer casing 301, and the third vent 221 is connected to the air outlet channel 350 on the outer casing 301.

[0058] like Figure 11 and Figure 12 As shown, in order to better guide the airflow and achieve sealing, a shaped baffle 302 is provided at the atmospheric inlet 320. The end of the valve core 101 is sealed and inserted into the shaped baffle 302. At the same time, there are two planes on the baffle 302, which contact the longitudinal partition at the upper end of the valve core 101, limiting the valve core 101 in the circumferential direction to prevent it from rotating, so that the valve core 101 can only move in the longitudinal direction. At the same time, the contact surface can also achieve a sealing effect, preventing the gas entering from the atmospheric inlet 320 from entering the atmospheric outlet 330. The side of the baffle 302 and the inner wall of the outer shell 301 form a fan-shaped flow channel 303 for gas to enter. The fan-shaped flow channel 303 is connected to the air inlet channel 340 through the first air leakage hole 202. The fan-shaped channel 304 has the effect of guiding the flow.

[0059] like Figure 5 and Figure 6 As shown, when positive pressure is generated at the common output port 310, the motor 401 shortens, placing the valve core 101 at the leftmost position of the vent 201. At this time, the intake air passage 110 and the overflow air passage 111 in the first air passage contact the inner wall of the vent 201, preventing it from working. The transition air passage 120 is connected to both the third vent 221 and the second vent 211. From the above, it can be seen that the second vent 211 is connected to the common output port 310, and the third vent 211 is connected to the exhaust passage 350. At the same time, the exhaust passage 130 also contacts the inner wall of the vent 201, preventing it from working. Furthermore, the annular baffle on the exhaust passage 130 does not block the first vent 202, allowing the first vent 202 to connect to the atmospheric intake port 320. If the turbine fan 501 is working at this time, the gas flow direction is as follows: Figure 15 As shown;

[0060] External gas enters the device through the atmospheric inlet 320, then enters the opening of the leak hood 201 through the fan-shaped flow channel 303, and enters the intake channel 340 through the first leak hole 202. It is then pressurized by the turbine motor 501. The pressurized airflow enters the device through the outlet channel 350, enters the transition airway 120 through the third leak hole 211, and then flows through the first leak hole 202 and enters the common outlet 310, forming a positive pressure, thereby inputting the pressurized gas into the ventilator.

[0061] like Figure 5 and Figure 6As shown, when negative pressure is generated at the common output port 310, the motor 401 extends, connecting the overflow duct 111 with the third leak hole 221, the intake duct 110 with the common output port 310, the transition duct 120 contacts the inner wall of the leak cover 201, preventing it from working, and the outlet duct 130 connects with the first leak hole 202. Simultaneously, the annular baffle of the outlet duct 130 blocks the fan-shaped flow channel 303. If the turbine fan 501 operates, the gas flow direction is as follows... Figure 16 and Figure 17 As shown:

[0062] The exhaust gas discharged from the ventilator enters the device through the common outlet 310 and enters the intake airway 110 through the second vent 211. Since the intake airway 110 is connected to the inside of the valve core 101, the exhaust gas enters the inside of the valve core 101. At the same time, the exhaust airway 130 is also connected to the inside of the valve core 101. The exhaust gas in the valve core 101 is discharged through the exhaust airway 130. The exhaust gas discharged from the exhaust airway 130 enters the intake channel 340 through the first vent 202. After being pressurized by the turbine fan 501, it enters the third vent 221 through the exhaust channel 350. The exhaust gas in the third vent 221 enters the overflow airway 111 and moves along the longitudinal direction of the valve core 101 to the baffle 302 through the opening on the overflow airway 111 between the valve core 101 and the vent cover 201. Finally, it is discharged from the atmospheric outlet 330.

[0063] Through the above two gas flow processes, it can be seen that in the process of switching between positive and negative pressure at the common output port 310, the turbine fan 501 does not change direction, allowing the turbine fan 501 to maintain normal operation and improve working efficiency. At the same time, through the cooperation of the intermediate air passage on the valve core 101 and the outer air passage on the leak cover 201, the airflow at the common output port can be switched between positive and negative directions when the valve core 101 is in two different positions. The structure of this device is ingenious, requiring only one motor to achieve the required functions, resulting in lower cost, smaller volume, greatly simplified structure, and easier installation and assembly.

[0064] It should be understood that the above description of specific embodiments of the present invention is only for illustrating the technical approach and features of the present invention, and is intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. However, the present invention is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of the present invention should be covered within the protection scope of the present invention.

Claims

1. A three-layer coaxial two-position five-way valve, characterized in that, include The valve core (101) is hollow. Several annular baffles and several longitudinal baffles are spliced ​​together on the outer side of the valve core (101) to form several intermediate air passages. The intermediate air passages include a first air passage, a transition air passage (120) and an outlet air passage (130) arranged in sequence in a fan shape. The first air passage is divided into an inlet air passage (110) and an overflow air passage (111) by longitudinal baffles. The inlet air passage (110) and the outlet air passage (130) are connected to the inside of the valve core (101). One end of the overflow air passage (111) is not blocked by a longitudinal baffle to form an opening. A leak cover (201) is provided on the outside of the valve core (101). The leak cover (201) has several annular ribs and several longitudinal ribs spliced ​​together to form several outer air channels. The outer air channels include an annular ventilation channel. The ventilation channel is divided into a second air channel (210) and a third air channel (220) by two longitudinal ribs. A first leak hole (202) is provided on the side of the leak cover (201) near the ventilation channel. A second leak hole (211) is provided on the second air channel (210). A third leak hole (221) is provided on the third air channel (220). The outer shell (301) is fitted over the air leak cover (201). The outer shell (301) has a common outlet (310), an atmospheric inlet (320), an atmospheric outlet (330), an air inlet channel (340), and an air outlet channel (350). Turbine blower (501) is used to pressurize the flowing gas; The motor (401) is connected to the end of the air leak cover (201) and is used to drive the valve core (101) to reciprocate in the longitudinal direction inside the air leak cover (201); The common output port (310) is used to generate positive and negative pressure. The atmospheric inlet (320) and atmospheric outlet (330) are connected to the atmosphere. The air inlet channel (340) is connected to the air inlet of the turbine fan (501). The air outlet channel (350) is connected to the output port of the turbine fan (501).

2. The three-layer coaxial two-position five-way valve according to claim 1, characterized in that, One end of the air leak cover (201) is sealed and detachably connected to the motor (401), while the other end is open. The opening is inserted into the inner wall of the outer shell (301) and communicates with the atmospheric air inlet (320).

3. A three-layer coaxial two-position five-way valve according to claim 2, characterized in that, The first vent (202) is connected to the air inlet channel (340), the second vent (211) is connected to the common outlet (310), and the third vent (221) is connected to the air outlet channel (350).

4. A two-position five-way valve with a three-layer coaxial air passage according to claim 3, characterized in that, The motor (401) drives the valve core (101) to move back and forth, so that the transition air passage (120) and the overflow air passage (111) are alternately connected to the third air leakage hole (221), the transition air passage (120) and the inlet air passage (110) are alternately connected to the second air leakage hole (211), and the outlet air passage (130) is intermittently connected to the first air leakage hole (202).

5. A three-layer coaxial two-position five-way valve according to claim 2, characterized in that, An irregularly shaped baffle (302) is provided at the atmospheric inlet (320) and is inserted into the end of the valve core (101). The end of the valve core (101) is inserted into the inner side of the baffle (302). A fan-shaped flow channel (303) for external gas to enter is formed between the outer wall of the baffle (302) and the inner wall of the outer shell (301).

6. A two-position five-way valve with a three-layer coaxial air passage according to claim 5, characterized in that, The baffle (302) has two contact surfaces that contact the sides of the two longitudinal partitions at the end of the valve core (101).

7. A two-position five-way valve with a three-layer coaxial air passage according to claim 1, characterized in that, One end of the valve core (101) is detachably connected to the output shaft of the motor (401) via a nut, and the other end is open, with a plug (102) fitted at the opening.

8. A three-layer coaxial two-position five-way valve according to claim 1, characterized in that, The vent cover (201) is provided with an installation edge, and the installation edge is detachably connected to the end face of the outer shell (301) by bolts.

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