A spiral demisting and dehumidifying device

Abstract

A spiral demisting and dehumidifying device comprises at least one spiral unit and a plurality of spiral units connected in parallel. The device utilizes a logarithmic spiral single-arm vortex body structure to generate an airflow vortex flow field. The airflow carries mist droplets to perform logarithmic spiral motion. The logarithmic spiral streamlines are similar and clustered. The points with the same curvature on the logarithmic spiral streamline clusters form arc-shaped isobaric surfaces. When mist droplets of different radii continuously pass through an off-line isobaric surface that is in inclination balance with its centripetal force and an off-field isobaric surface that is in vertical balance with its centripetal force, the vortex motion with an inclination angle is transformed into a circular motion without an inclination angle and then hits a wall surface to achieve demisting. During the demisting process, the pressure is reduced and the temperature is lowered, so that water vapor condenses on the mist droplets and is removed with the mist droplets to achieve dehumidification. The airflow after demisting and dehumidification is discharged from an outlet, and the mist droplets that hit the wall gather into a liquid film and are discharged with the bottom airflow. The spiral unit has a small volume and a limited flow rate. The parallel connection of a plurality of spiral units not only expands the flow rate but also maintains the removal quality of the small-volume spiral unit.

Description

Technical Field

[0001] The invention belongs to the field of air demisting and dehumidification, and in particular relates to a spiral demisting and dehumidification device. Background Art

[0002] The separation of suspended droplets in the industrial field is an important issue in many chemical process processes. In the gas (vapor) liquid mass transfer and heat transfer unit operations such as distillation, absorption, desorption, moisture addition (desorption), whether it is a packed tower or a plate tower, the transfer of interphase components is promoted through close contact and separation of the two phases to achieve the purpose of liquid or gas purification. In these processes, the gas phase leaving the packing layer or the tower plate must carry a certain number of droplets or liquid foams of varying sizes; in the subsequent cooling and condensation process, tiny particles suspended in the gas phase will also be formed; when the system being treated is relatively complex, the gas phase chemical reaction between the components may also generate smaller particles. Usually, the droplets entrained by the gas flow must be separated out, which is also called gas-liquid separation (abbreviated as demisting). There are many methods for demisting at present. The more commonly used demisting devices include inertial type, baffle type, cyclone plate type, cyclone type, gravity sedimentation type, electrical separation type, fiber mesh type demisting device, etc. The operating principles of various demisting devices are different and they are suitable for different particle size ranges. However, to fully remove tiny droplets suspended in the gas phase, it is necessary to reduce the flow channel spacing or pore size, increase the separation and capture units, and increase the flow rate. This will increase the resistance and make the removal more difficult.

[0003] Generally, the humidity of airflow with large amount of fog is saturated, and common demisting technologies and devices are not suitable for dehumidification. Humidity, generally speaking, refers to air humidity in meteorology. It is the content of water vapor in the air. Liquid or solid water in the air is not counted in humidity. Air without water vapor is called dry air. Air humidity is a physical quantity indicating the amount of water vapor contained. There are many dehumidification methods at present. The more commonly used dehumidification devices include cooling dehumidifiers, rotary dehumidifiers, liquid dehumidification air conditioning systems, electro-osmosis dehumidifiers, etc. General civilian dehumidifiers control the relative humidity within the range that the human body feels comfortable. Common dehumidification technologies all use special materials or devices. The materials need to be regenerated, the devices need to consume electricity and add dynamic point control, and are limited by some negative effects, which have a certain impact on the dehumidification effect.

[0004] In situations where both demisting and dehumidification are required, demisting is generally performed first and then dehumidification. Technologies and devices that have both demisting and dehumidification functions are relatively rare.

[0005] In summary, it is necessary to provide a new demisting and dehumidifying device with excellent comprehensive performance. Summary of the invention

[0006] The purpose of the present invention is to provide a device with high efficiency, compact size, light weight, low pressure drop, high efficiency, large processing capacity, wide range of use, and capable of demisting and dehumidifying at the same time, so as to solve at least one technical problem existing in the prior art.

[0007] In order to achieve the above-mentioned object, the present invention provides a spiral demisting and dehumidifying device, comprising at least one spiral unit, each spiral unit consisting of a spiral shell (1), a spiral cover (2), and a spiral bottom (3);

[0008] The spiral shell is a single-arm vortex body that curls inwardly and rotates horizontally around a spiral axis (10). The wall surface of the single-arm vortex body facing the spiral axis is an inner spiral wall (11), and the wall surface facing away from the spiral axis is an outer spiral wall (12). The horizontal projection curves of the inner spiral wall and the outer spiral wall include two logarithmic spirals with similar rotation directions. The two logarithmic spirals have the same pole, the same total polar angle, and the same inclination angle. The point on the spiral axis is the spiral center (8). The pole of the logarithmic spiral is the spiral center. The total angle of the single-arm vortex body rotating and curling, i.e., the total polar angle, is φ. The outer end edge line (13) of the outer spiral wall is parallel to the spiral axis. The distance from the outer end edge line of the outer spiral wall to the spiral axis is the outer end polar diameter P' of the outer spiral wall. 0 (21), the circle with the spiral center as the center and the outer end polar diameter of the spiral wall as the radius is the outer end circle of the single-arm vortex body (22), the outer end circle of the single-arm vortex body is the outer end circle of the spiral shell, the single-arm vortex body rotates horizontally from the outer end circle to the spiral eye circle (6), the spiral eye circle and the outer end circle of the spiral shell are concentric circles, and the radius of the spiral eye circle is the polar diameter P φ (7), the spiral cover is a cover of the upper horizontal plane of the single-arm vortex body, the spiral cover has a circular hole as the cover screw eye (4), the cover screw eye circle is the projection of the screw eye circle on the spiral cover, the spiral bottom is the bottom of the lower horizontal plane of the single-arm vortex body, the spiral bottom has a circular hole as the bottom screw eye (5), the bottom screw eye circle is the projection of the screw eye circle on the spiral bottom, the cylindrical space between the cover screw eye and the bottom screw eye is the screw eye area (9), the horizontal projection of the screw eye area is the screw eye circle, the cylindrical outer facade of the screw eye area is the screw eye area edge circular surface (49), the cover screw eye and the bottom screw eye are the spiral unit outlets, the spiral cover and the spiral bottom are horizontal projections of each other, and the outer contour line of the spiral cover includes the projection of the logarithmic spiral of the outer spiral wall rotating from the outer end edge line to 2π on the spiral cover;

[0009] The outer edge of the outer spiral wall of the single-arm vortex body is used as the starting point for rotation around the spiral axis. The starting point radian is 0. It can rotate inward clockwise or counterclockwise. Counterclockwise inward rotation is left-handed rotation. Left-handed rotation starts at 3 o'clock on the clockwise direction. Clockwise inward rotation is right-handed rotation. Right-handed rotation starts at 9 o'clock on the clockwise direction. Left-handed rotation starting point 0 radian is right-handed rotation of the spiral axis (23). Left-handed rotation 1π radians is left-handed rotation of the spiral axis (24). Left-handed rotation π / 2 radians is forward rotation of the spiral axis (2 5), 3π / 2 radians of left-hand rotation is the rear direction of the screw axis (26); 0 radians of right-hand rotation is the left direction of the screw axis (27), 1π radians of right-hand rotation is the right direction of the screw axis (28), π / 2 radians of right-hand rotation is the forward direction of the screw axis (29), 3π / 2 radians of right-hand rotation is the rear direction of the screw axis (30), and the direction of inward rotation or rotational contraction is the positive rotation direction (31); the forward, backward, left and right directions of the spiral unit are the same as the forward, backward, left and right directions of the screw axis, attached Fig.12 It is a schematic diagram comparing the rotation angle and direction of clockwise and counterclockwise rotation;

[0010] The wall curvature of the single-arm vortex increases as the inward rotation angle of the logarithmic spiral of its horizontal projection increases. The inclination rate of the logarithmic spiral rotating inward is negative. The rotation angle in the positive direction is represented by a positive value, and the rotation angle in the negative direction is represented by a negative value. The inclination of the logarithmic spiral of the inner spiral wall and the logarithmic spiral of the outer spiral wall, that is, the inclination angle, is the same as A (32), 0<A<π / 4, and the tangent slope, that is, the inclination rate, is –tan(A), 0<tan(A)<1, and the angle between the two logarithmic spirals is α (33), 0 <α<2π, the total polar angle of the two logarithmic spirals is the same, the polar angle of the polar diameter at both ends of the logarithmic spiral is the total polar angle φ, that is, the total angle of rotation and curling of the single-arm vortex body, φ≥4π–α, the two logarithmic spirals rotate around the spiral axis at the same angle, the variable of the same rotation angle, that is, the polar angle variable is θ (34), 0≤θ≤φ, the side line parallel to the spiral axis at the angle θ on the spiral wall is the θ side line, then the outer side line can also be called the 0 side line and the inner side line can also be called the φ side line, the distance from the point on the inner spiral wall logarithmic spiral (35) to the spiral axis is the polar diameter P θ (36), the outer end of the inner screw wall (the starting end of the inner screw wall) has a polar diameter of P 0 (37), P θ =P 0 e –θtan(A) , e –θtan(A) It is the ratio of the polar diameter at the angle θ of the logarithmic spiral to the polar diameter at the outer end, referred to as the polar diameter ratio, 0<e –θtan(A) <1, the inner end diameter of the inner screw wall is equal to the eye diameter P φ , P φ =P 0 e –φtan(A) The distance from a point on the external spiral wall logarithmic spiral (38) to the spiral center axis is the polar diameter P' θ , P' θ =P' 0 e –θtan(A), the outer end diameter of the outer spiral wall P' 0 , P' 0 =P 0 e αtan(A) , the inner end diameter of the outer screw wall is P' φ (39), P' φ =P' 0 e –φtan(A) , the polar diameter ratio of the inner spiral wall logarithmic spiral is the same as the polar diameter ratio of the outer spiral wall logarithmic spiral, and the similarity ratio of the inner spiral wall logarithmic spiral to the outer spiral wall logarithmic spiral is e –αtan(A) , similarity ratio e –αtan(A) is the ratio of the polar diameters of the two logarithmic spirals at the same polar angle θ, that is, P θ :P' θ =e –αtan(A) , and the similarity of the two logarithmic spirals means that the logarithmic spiral of the inner spiral wall is enlarged e αtan(A) times the logarithmic spiral of the outer wall, or the logarithmic spiral of the outer wall is reduced by e αtan(A) After multiplication, it is equal to the logarithmic spiral of the inner wall, or the two polar diameters at the same polar angle and the lines connecting the polar diameter endpoints form similar triangles, and the two logarithmic spirals corresponding to the same polar angle are similar. The similarity relationship between the two ends of the logarithmic spiral of the inner wall and the logarithmic spiral of the outer wall includes: P' 0 =P 0 e αtan(A) , P' φ =P φ e αtan(A) ; In the interval α≤θ≤φ–α, the equal-length polar diameters or equal-length polar diameter points on the two logarithmic spirals are rotationally symmetric at an angle of α. The rotational symmetry relationship includes: P 0 =P' 0 e –αtan(A) =P' α , P' φ =P φ e αtan(A) =P φ–α , P' θ =P θ e αtan(A) =P θ–α ; In the interval of φ-α<θ≤φ, the points on the logarithmic spiral of the inner spiral wall and the equal-length polar diameters or the equal-length polar diameter points on the inner end extension line of the logarithmic spiral of the outer spiral wall are rotationally symmetrical at an angle α. The rotational symmetry relationship includes: P φ =P' φ e –αtan(A) =P' φ+α , P θ =P' θ e –αtan(A) =P' θ+α ; In the interval 0≤θ<α, the points on the logarithmic spiral of the outer wall are rotationally symmetrical with the equal-length polar diameters or the equal-length polar diameter points on the extension line of the outer end of the logarithmic spiral of the inner wall at an angle α. The rotational symmetry relationship includes: P'0 =P 0 e αtan(A) =P 0–α , P' θ =P θ e αtan(A) =P θ–α ; Because P θ =P 0 e –θtan(A) , P' 0 =P 0 e αtan(A) , P' θ =P' 0 e –θtan(A) , then P' θ =P 0 e αtan(A) e –θtan(A) =P 0 e (α–θ)tan(A) , similarly P θ =P' 0 e (–θ–α)tan(A) .

[0011] Any equal polar angle segments on two logarithmic spirals with the same inclination are similar, which is consistent with the self-similarity of logarithmic spirals. If you take any segment of a logarithmic spiral and enlarge or reduce it according to the original geometric relationship, you can find an equal logarithmic spiral on the original logarithmic spiral or the extension of the original logarithmic spiral. Two logarithmic spirals with the same inclination but not equal polar angles can be similar by extending them to equal polar angles according to the difference in polar angles, or even become equal after being similar and enlarged or reduced. The similarity ratio of similar logarithmic spirals in the same polar coordinate system is the ratio of the polar diameters of the collinear lines of the two logarithmic spirals, which is equal to the ratio of the angle exponent of the two similar logarithmic spirals enlarged or reduced to be equal. The ratio of rotational symmetry is formed. The angle between any equal polar diameters on two similar logarithmic spirals is equal. If the equal polar diameter point of one logarithmic spiral rotates along its own spiral to a collinear line with the equal polar diameter of the other logarithmic spiral, the polar diameter ratio at the collinear line is based on the angle as the exponent. The entire logarithmic spiral is rotationally symmetrical after enlarging or reducing the angle exponent at one end. The two rotationally symmetrical curves are equal. For a logarithmic spiral itself, the enlargement or reduction of this angle exponent is its own extension or shortening. For example, the logarithmic spiral line from 0 to 2π and the line from 2π to 4π on the outer wall of the spiral shell are self-similar, and the similarity ratio is e 2 πtan(A) For example, the logarithmic spiral line from 0 to 2π and the line from 2π to 4π in the spiral shell are also self-similar, and the similarity ratio is e 2πtan(A) For example, the logarithmic spiral line from 0 to 2π on the inner wall of a spiral shell is similar to the logarithmic spiral line from 2π to 4π on the outer wall of a spiral shell, and the similarity ratio is e (2π–α)tan(A) .

[0012] The outer end of the logarithmic spiral of the inner spiral wall of the single-arm vortex and the outer end of the logarithmic spiral of the outer spiral wall are connected by an outer end convex arc line, one end of the outer end convex arc line (15) is tangent to the outer end of the inner spiral wall logarithmic spiral, and the other end of the outer end convex arc line intersects with the outer end of the logarithmic spiral of the outer spiral wall at the outer end circle of the single-arm vortex body, and the chord length of the outer end convex arc line is L' 0 (40) is the outer end diameter P' of the outer screw wall 0 The outer end diameter P of the inner screw wall 0 The difference is L' 0 = P' 0 –P 0 The outer end convex arc line between the outer end edge line of the inner spiral wall (14) and the outer end edge line of the outer spiral wall forms a curved surface as the outer end convex arc wall (16) of the single-arm vortex body, and the chord length L' of the outer end convex arc line 0 The inner end of the logarithmic spiral of the spiral wall in the single-arm vortex body and the inner end of the logarithmic spiral of the outer spiral wall are connected by an inner end convex arc line, one end of the inner end convex arc line (17) is inscribed with the inner end of the logarithmic spiral of the outer spiral wall, and the other end intersects with the inner end of the logarithmic spiral of the inner spiral wall on the eye circle, the inner end polar diameter of the inner spiral wall is equal to the eye circle polar diameter, and the chord length of the inner end convex arc line is L' φ (41) is the inner end diameter P' of the outer screw wall φ The inner end diameter P of the inner screw wall φ The difference is L' φ = P' φ –P φ The inner end convex arc line between the inner end edge line (18) of the outer spiral wall and the inner end edge line (19) of the inner spiral wall forms a curved surface as the inner end convex arc wall (20) of the single-arm vortex body. The chord length L' of the inner end convex arc line φ That is, the thickness of the inner ends of the two walls of the single-arm vortex body; the ratio of the thickness of the inner ends of the two walls of the single-arm vortex body to the thickness of the outer ends is L' φ / L' 0 , L' φ / L' 0 =(P' φ –P φ ) / (P' 0 –P 0 )=(P 0 e (α–φ)tan(A) –P 0 e –φtan(A) ) / (P 0 e αtan(A) –P 0 )=e –φtan(A) (e αtan(A) –1) / (e αtan(A) –1)=e –φtan(A) ; The thickness of the two walls of the single-arm vortex at the curling angle θ is L' θ (42) is the axial section width of the spiral mandrel at the curling angle θ, that is, the difference in polar diameter between the two wall edges on the axial section, L' θ= P' θ –P θ The ratio of the thickness of the two walls at angle θ to the thickness of the two walls at the outer end is L' θ / L' 0 =e –θtan(A) This ratio is the same as the ratio of the pole diameters at the same θ angle of the logarithmic spiral, namely L' θ / L' 0 =P θ / P 0 =e –θtan(A) The inner spiral wall, the outer spiral wall, the inner end convex arc wall and the outer end convex arc wall together form a single-arm vortex body. The inner end convex arc wall of the single-arm vortex body can also be replaced by the inner end concave arc wall. The inner end concave arc wall is the inner end edge line of the outer spiral wall rotated by an angle extending from φ to φ+α. The inner end polar diameter of the extended outer spiral wall is P' φ+α , P' φ+α =P' 0 e –（φ+α）tan(A) =P 0 e αtan(A) e –（φ+α）tan(A) =P 0 e –φtan(A) =P φ The rotation angle of the inner edge of the inner screw wall is still φ, and the inner end of the logarithmic spiral of the inner screw wall and the inner end of the logarithmic spiral of the outer screw wall are connected by the radius of the eye circle P. φ The concave arc line concave toward the spiral core axis is connected, and the concave arc line forms a curved surface along the inner end edge line of the outer spiral wall and the inner end edge line of the inner spiral wall to form the concave arc wall at the inner end of the single-arm scroll body.

[0013] The plane formed by the intersection of the outer edge of the spiral wall in the single-arm vortex body and its projection onto the spiral axis on the outer spiral wall, or the axial section formed by the outer edge of the inner spiral wall and the 2π edge (43) of the outer spiral wall is the spiral unit entrance (44), and the width of the spiral unit entrance is L 0 (45), the width edge line (442) of the entrance surface of the spiral unit is the lower edge line of the spiral cover straight edge and the upper edge line of the spiral bottom straight edge (441), and the polar diameter of the outer spiral wall rotating to 2π is P' 2π (46), L 0 =P 0 –P’ 2π =P 0 –P 0 e (α–2π)tan(A) =P 0 (1–e (α–2π)tan(A) ), the width of the spiral unit entrance surface is greater than or equal to the spiral eye diameter, i.e. L 0 ≥P φ , then P 0 –P’ 2π ≥P φ , because P' 2π =P 0 e(α–2π)tan(A) , then P 0 –P 0 e (α–2π)tan(A) ≥P 0 e –φtan(A) , which simplifies to 1–e (α–2π)tan(A) ≥e –φtan(A) , since φ≥4π–α in this device, substitute φ=4π–α into 1–e (α–2π)tan(A) ≥e –φtan(A) , then 1–e (α–2π)tan(A) ≥e (α–4π)tan(A) , 1≥e (α–4π)tan(A) +e (α–2π)tan(A) , 1≥e αtan(A) (e –4πtan(A) +e –2πtan(A) ), 1 / (e –4πtan(A) +e –2πtan(A) )≥e αtan(A) , e 4πtan(A) / (e 2πtan(A) +1)≥e αtan(A) , because αtan(A) >1, then e 4πtan(A) / (e 2πtan(A) +1)>1,e 4πtan(A) >e 2πtan(A) +1, e 4πtan(A) –e 2πtan(A) >1,(e 2πtan(A) –1 / 2) 2 >5 / 4,e 2πtan(A) >(5 1 / 2 +1) / 2, then tan(A)>In[(5 1 / 2 +1) / 2] / (2π),A>arctan{In[(5 1 / 2 +1) / 2] / (2π)}, when φ>4π–α, e –φtan(A) decreases as φ increases, while 1–e (α–2π)tan(A) ≥e –φtan(A) Still holds true, then 1–e –φtan(A) ≥e (α–2π)tan(A) , e 2πtan(A) (1–e –φtan(A) )≥e αtan(A) , because αtan(A) >1, then e 2πtan(A) (1–e –φtan(A) )>1,1–e –φtan(A) >e –2πtan(A) , 1>e –2πtan(A) +e –φtan(A) , e φtan(A) >1 / (1–e –2πtan(A) ), because φtan(A) is a monotonically increasing function of A and 1 / (1–e –2πtan(A)) is a monotonically decreasing function of A, and from φ≥4π–α and 2π>α>0, we can get φ>2π. It can be seen that the minimum value range of A can be expanded as φ increases, that is, when φ>4π–α, the geometric relationship between the inclination angle A and the total polar angle φ satisfies 1>e –2πtan(A) +e –φtan(A) The specific value can be calculated by iterative method;

[0014] Example 1: When φ=9π / 2, 1>e –2πtan(A) +e –(9π / 2)tan(A) , by the iteration method, we can get A>arctan(0.0718707), arctan(0.0718707)=0.07174734, because arctan{In[(5 1 / 2 +1) / 2] / (2π)}=0.07643798, 007174734<0.07643798, that is, arctan(0.0718707)<arctan{In[(5 1 / 2 +1) / 2] / (2π)}, the minimum value of the inclination angle A can be expanded to less than 0.07174734 radians, so the value range of the inclination angle A can be expanded to A>0 as φ increases. When the inclination angle A=π / 4, tan(A)=1, e φ >1 / (1–e –2π ), e φ >1.00187, if φ=2.1π, then e 2.1π =733.14578>1.00187, the screw eye circle is too small, and a small screw eye circle affects the air flow rate. Increasing the flow rate requires increasing the wind pressure. If the required wind pressure exceeds the range of commonly used fan equipment, it will not have practical significance. Therefore, this device sets A<π / 4.

[0015] The outer contour line (47) of the spiral cover or spiral bottom includes a horizontal projection line (381) of the outer spiral wall of the spiral shell in the range of 0 to 2π, a horizontal projection line (443) of the width edge line of the spiral unit entrance, and a horizontal projection line of the convex arc wall at the outer end of the spiral shell;

[0016] The air flow channel surrounded by the spiral shell, the spiral cover and the spiral bottom is a vortex zone (48); the width of the spiral unit inlet surface is the inlet width of the vortex zone; the vortex zone is a space formed by the vortex extending from the spiral unit inlet surface to the spiral eye zone, that is, the space between the 2π and φ interval surface of the spiral wall outside the single-arm vortex body, the 0 and φ interval surface of the spiral wall inside the single-arm vortex body, the convex arc wall at the end of the single-arm vortex body, the spiral unit inlet surface and the spiral eye zone edge circular surface (49); the total rotation angle of the vortex zone is equal to the total rotation curling angle φ of the single-arm vortex body, and the vortex zone is divided into an acceleration separation zone (50) and a deceleration separation zone (51);

[0017] The vortex zone surrounded by the outer spiral wall 2π to φ interval surface of the single-arm vortex body, the inner spiral wall 0 to φ–2π interval surface of the single-arm vortex body and the spiral unit inlet surface is the acceleration separation zone. The acceleration separation zone is the radial double-sided spiral wall surface. The angle between the two walls of the acceleration separation zone is 2π–α (52). The end section of the acceleration separation zone is the axial section where the inner spiral wall rotates to the φ–2π angle. The end width of the acceleration separation zone is the axial section width L at the φ–2π edge line (53) of the inner spiral wall. φ–2π (54), assuming that the width of the end of the acceleration separation zone is equal to the circular polar diameter of the screw eye P φ That is L φ–2π =P φ , because L φ–2π =P φ–2π –P’ φ =P 0 e (–φ+2π)tan(A) –P 0 e （–φ+α) tan(A) =P 0 e –φtan(A) (e 2πtan(A) –e αtan(A) ), and P φ =P 0 e –φtan(A) , and L φ–2π =P φ , then e (–φ+2π)tan(A) –e （–φ+α)tan(A) =e –φtan(A) , cancel out the e in the previous formula –φtan(A) Then 2πtan(A) –e αtan(A) =1, then e 2πtan(A) –1=e αtan(A) , then In(e 2πtan(A) –1)=αtan(A), because 0<e –αtan(A) <1, and 1<e αtan(A) , then 1<e 2πtan(A) , when e 2πtan(A) >2, tan(A)>In(2) / (2π), since π / 4>A>arctan[In(2) / (2π)], then 2π>In(e 2πtan(A) –1)>0, then 0<α<In(e 2πtan(A) –1) / tan(A), simplified to 0<α<2π, then e 2πtan(A) –e αtan(A) >1 to get L φ–2π =P 0 e –φtan(A) (e 2πtan(A) –e αtan(A) )>P φ , that is, when A>arctan[In(2) / (2π)], the width of the end of the acceleration separation zone is greater than the diameter of the screw eye circle; when 1<e 2πtan(A)<2, tan(A)<In(2) / (2π), then A<arctan[In(2) / (2π)], then In(e 2πtan(A) –1)<0, then α>In(e 2πtan(A) –1) / tan(A) means that α is greater than a negative number, and 0<α<2π, then e 2πtan(A) –e αtan(A) <1, because e 2πtan(A) –e αtan(A) <1 gives L φ–2π =P 0 e –φtan(A) (e 2 πtan(A) –e αtan(A) )<P φ , that is, when A<arctan[In(2) / (2π)], the width of the end of the acceleration separation zone is less than the circular polar diameter of the screw eye; when A=arctan[In(2) / (2π)], the width of the end of the acceleration separation zone is equal to the circular polar diameter of the screw eye;

[0018] The vortex zone formed by the axial section at the end of the acceleration separation zone, the φ–2π to φ interval surface of the spiral wall of the single-arm vortex body, the convex arc wall at the inner end of the single-arm vortex body and the circular surface of the spiral eye area is the deceleration separation zone. The deceleration separation zone is a radial single-sided spiral wall surface. The flow cross-section of the deceleration separation zone increases, the pressure increases, and the flow velocity decreases, but the streamline of the deceleration separation zone is short and the inclination angle is uneven. There is a separation effect but it is not balanced. The main purpose of setting the inner end of the single-arm vortex body into a convex arc wall is that if the inner end concave arc wall is made into a sharp point here, the processing accuracy requirements are high and it is easy to be broken during use due to operations such as cleaning The maintenance cost is increased by breaking, and the convex arc wall is made to form a smaller deceleration separation zone structure. The working effect is mainly based on the acceleration separation zone, and the specific effect of the deceleration separation zone is not used as a reference. If a sharp and solid inner end concave arc wall can be made, this interval is an extension of the acceleration separation zone structure, that is, the acceleration separation zone is extended by an angle α, and the deceleration separation zone becomes a vortex zone surrounded by the inner spiral wall φ–2π+α to φ interval surface and the spiral eye area edge circular surface. The pressure and flow rate of this deceleration separation zone are directly affected by the spiral eye area, and the separation effect is still uneven; if the end width L of the acceleration separation zone φ–2π Greater than the eye radius P φ , then the pressure in the screw eye area is lower than the pressure at the end of the acceleration separation area. The pressure in the deceleration separation area increases first and then decreases along the flow direction, while the flow velocity decreases first and then increases. If the width L at the end of the acceleration separation area φ–2π Smaller than the eye radius P φ When , the pressure in the screw eye area is higher than the pressure at the end of the acceleration separation area, the pressure in the deceleration separation area increases unevenly along the flow direction and the flow velocity also decreases unevenly. The screw eye area also has a separation effect, but the streamlines near the screw eye are deflected, resulting in an uneven inclination of the overall streamline cluster, so it is not included in the scope of action of this device;

[0019] The radial flow section is the arc surface around the axis intercepted by the two walls of the acceleration separation zone at the angle θ of the spiral wall of the single-arm vortex body in the acceleration separation zone. The radial flow section is a coaxial arc surface with the spiral axis as the axis center. The axial angle between the horizontal ends of the radial flow section is the angle between the two walls of the acceleration separation zone 2π–α. The radial flow section of the streamline, i.e., the element surface, coincides with the radial flow section of the streamline cluster, i.e., the total surface. The streamline and the radial flow section are obliquely intersected, and the oblique angle is the inclination angle A. The radial flow section of the streamline cluster coincides with the radial flow section of the acceleration separation zone. The horizontal side arc length of the radial flow section of the acceleration separation zone is L 弧 θ , L 弧 θ = (2π – α)P θ = (2π – α)P 0 e –θtan(A) The axial section of the acceleration separation zone at the angle θ of the spiral wall in the single-arm vortex body is taken as the tangential flow section of the acceleration separation zone. The tangential flow section of a single streamline, i.e., the element surface, is perpendicular to the streamline, while the element surfaces of multiple streamlines are parallel and not on the same plane. The total surface of the streamline cluster connected by the element surfaces, i.e., the tangential flow section of the acceleration separation zone, is a wavy surface that undulates along the axial section and is intercepted by the two walls of the acceleration separation zone. When two adjacent streamlines are infinitely close, the wavy surfaces are densely packed into points, and the wavy surfaces can be approximated as a plane. Therefore, the tangential flow section is the axial projection plane of the wavy surface, i.e., the axial section. The horizontal side length L of the tangential flow section is θ (55), L θ =P θ –P’ θ+2π =P θ –P θ+2π e αtan(A) =P θ –P θ–（2π–α） =P 0 e –θtan(A) –P 0 e (–θ–2π+α)tan(A) , get L θ =P 0 e –θtan(A) (1–e (α–2π)tan(A) ), the flow section of the acceleration separation zone decreases along the direction of the increasing curvature of the spiral wall in the single-arm vortex body. Because the vortex zones are of equal height, the change in the flow section area is manifested as the change in its width. The tangential flow section width of the acceleration separation zone is its horizontal side length L θ The radial flow section width of the acceleration separation zone is expressed as the arc length of its horizontal side is L 弧 θ , L 弧 θ =(2π–α)P θ , the width ratio of the tangential flow section of the acceleration separation zone to the entrance of the eddy flow zone is L θ / L 0 , Lθ / L 0 =[P 0 e –θtan(A) (1–e (α–2π)tan(A) )] / P 0 (1–e (α–2π)tan(A) )=e –θtan(A) The ratio of the horizontal arc length of the radial flow section of the acceleration separation zone to the horizontal arc length of the radial flow section of the outer edge of the spiral wall of the single-arm vortex body is L. 弧 θ / L 弧 0 , L 弧 θ / L 弧 0 =(2π–α)P 0 e –θtan(A) / (2π–α)P 0 =e –θtan(A) , the change rate of the horizontal side length of the tangential flow section and the arc length of the horizontal side of the radial flow section at the same rotation angle is the same;

[0020] The airflow passes through the vortex zone to form a cyclonic vortex field. The inlet pressure of the spiral unit is p 进 The pressure in the screw eye is p 出 The pressure difference between the spiral unit entrance and the spiral eye is p 进 –p 出 The airflow is driven to enter the spiral unit at an inclination angle A of the radial flow section and advances along the horizontal vortex of equal height in the vortex zone. The streamlines of each particle in the flow field rotate around the spiral axis at an inclination rate of –tan(A). The streamlines in the acceleration separation zone are acceleration streamlines (56). The acceleration streamlines are horizontal logarithmic spirals with an inclination rate of –tan(A) and are rotationally symmetrical after the rotation angle β (57) formed with the logarithmic spiral of the spiral wall in the single-arm vortex body is poor. The starting end of the acceleration streamline is at the entrance pole diameter P of the vortex zone. β 0 (58), 0<β<2π–α, P β 0 =P 0 e –βtan(A) =P β =P' β e –αtan(A) , P β 0 The polar diameter of the logarithmic spiral of the spiral wall in the single-arm vortex body is P β (59), if β = 0, then P β =P 0 , if β=2π–α, then P' β e –αtan(A) =P' 0 e –(α+2π–α)tan(A) =P'0 e –2πtan(A) =P' 2π , since 0<β<2π–α, then P' 2π <P β 0 <P 0 That is, the starting point of the acceleration streamline is the extreme value P β 0 Between the outer end polar diameter of the logarithmic spiral of the spiral wall in the single-arm vortex body and the polar diameter of the logarithmic spiral of the outer spiral wall rotating to 2π, the rotation angle of the acceleration streamline changes with the rotation angle variable θ of the spiral wall in the single-arm vortex body to θ+β(60), and the polar diameter of the acceleration streamline changes with the rotation angle variable θ of the spiral wall in the single-arm vortex body to P β θ (61), P β θ =P β 0 e –θtan(A) =P 0 e –(θ+β)tan(A) =P θ e –βtan(A) =P θ+β , P β θ The polar diameter of the logarithmic spiral of the spiral wall in the single-arm vortex body is P θ+β (62), the end diameter of the acceleration streamline P β φ–2π , P β φ–2π =P β 0 e –(φ–2π)tan(A) =P φ–2π+β =P' φ–2π+β e –αtan(A) , if β=0, then P φ–2π+β =P φ–2π , if β=2π–α, then P β φ–2π =P' φ–2π+β e –αtan(A) =P' 0 e –（φ–2π+2π–α+α）tan(A) =P' φ , since 0<β<2π–α, then P' φ <P β φ–2π <P φ–2π That is, the end diameter value P of the acceleration streamline β φ-2π In the single-arm vortex, the logarithmic spiral of the spiral wall rotates to the polar diameter between φ–2π and the inner polar diameter of the logarithmic spiral of the outer spiral wall, so P' φ <P θ+β <P 0 That is, the acceleration streamline diameter value P βθ Between the outer end polar diameter of the logarithmic spiral of the spiral wall in the single-arm vortex body and the inner end polar diameter of the logarithmic spiral of the outer spiral wall, the acceleration streamline and the logarithmic spiral of the spiral wall in the single-arm vortex body have a rotational symmetry relationship with a relatively poor angle, including: β 0 =P 0 e –βtan(A) =P β , P β θ =P θ e –βtan(A) =P β 0 e –θtan(A) =P 0 e –(θ+β)tan(A) =P θ+β , P β φ–2π =P φ–2π e –βtan(A) =P β 0 e –(φ–2π)tan(A) =P 0 e –(φ–2π+β)tan(A) =P φ–2π+β , the inclination rate of each acceleration streamline is the same, and each acceleration streamline is similar to the logarithmic spiral of the spiral wall in the single-arm vortex body from 0 to φ–2π, and the similarity ratio is P β θ :P θ =e –βtan(A) Similarly, each acceleration streamline is similar to the logarithmic spiral of the outer spiral wall of the single-arm vortex from 2π to φ, and the similarity ratio is P β θ :P' θ+2π =e (2π–α–β)tan(A) , and the logarithmic spiral of the spiral wall of the single-arm vortex from 0 to φ–2π is similar to the logarithmic spiral of the outer spiral wall from 2π to φ, and the similarity ratio is P θ :P' θ+2π =e (2π–α)tan(A)The horizontal section of the acceleration streamline cluster forms a vortex surface. The pressure gradient is distributed along the acceleration streamline cluster. The flow field forms a vortex field. The linear velocity of the airflow particle is always tangent to the acceleration streamline. The linear velocity inclination is the same as the inclination of the acceleration streamline. The flow section of the acceleration streamline cluster is divided into a radial flow section and a tangential flow section. The airflow particles include air molecules and droplets of different radii r carried by the airflow. The center of curvature of each point on the acceleration streamline is the center of the curvature circle on its evolute. The evolute of the acceleration streamline is also in the shape of a logarithmic spiral. The centripetal force on the airflow particle points to the center of curvature of its acceleration streamline (63). The angle between the centripetal force and the radial direction is equal to the inclination angle A. The center of curvature is the center of the centripetal force of the airflow particle. The curvature is the centripetal force curvature of the airflow particle. The curvature value of a point on the acceleration streamline is the curvature value of the point (64) on the logarithmic spiral of the spiral wall in the single-arm vortex body that is rotationally symmetrical with the acceleration streamline. The curvature value of a point on the logarithmic spiral of the spiral wall in the single-arm vortex body is the curvature radius R of the point. θ The reciprocal of (65) 1 / R θ , radius of curvature and polar diameter P θ The angle (66) is equal to the inclination angle A of the logarithmic spiral of the spiral wall of the single-arm vortex body, and the radius of curvature R θ =cos(A)P 0 e θtan(A) , curvature 1 / R θ =1 / [cos(A)P 0 e θtan(A) ] corresponds to the centripetal curvature of the airflow particle on the acceleration streamline 1 / R 向 =1 / [cos(A) P β θ ]=1 / [cos(A)P 0 e –(θ+β)tan(A) ], the centripetal force on the air particle increases as the curvature of the acceleration streamline increases. The centripetal force center of the air particle moves along the asymptote of the acceleration streamline at the same time. The linear velocity of the air particle is tangent to the curvature circle and is at right angles to the centripetal force direction. Points with the same curvature on the horizontal section of the acceleration streamline cluster are rotationally symmetrical around the spiral axis. The line connecting the points with the same curvature is the isobar (67). The pressure on the isobar is equal. The isobar is a concentric arc with the spiral axis as the center. The polar diameter of the isobar is the radius R β θ =P β θ =P 0 e –(θ+β)tan(A) =P θ+β , because P' φ <P θ+β <P 0 , then P' φ <R β θ <P 0That is, the radius of the isobar is between the outer polar diameter of the logarithmic spiral of the inner wall of the single-arm vortex and the inner polar diameter of the logarithmic spiral of the outer wall. The tangential force at each point on the isobar is at an inclination angle A to the isobar, which is in the same direction as the linear velocity. Each point on the isobar points radially to the spiral axis. The direction of the centripetal force at each point on the isobar is concave and perpendicular to the tangential force and at an inclination angle A to the radial direction. The arc surface formed by the isobars with the same radius in the acceleration streamline cluster is the isobaric surface. The pressure on the isobaric surface is equal. The isobaric surface of the acceleration streamline cluster is the radial flow section of the acceleration streamline cluster. The isobaric surface of the acceleration streamline cluster coincides with the radial flow section of the acceleration separation zone. The tangential flow section of the acceleration streamline cluster coincides with the tangential flow section of the acceleration separation zone. The linear velocity v of each airflow particle on the isobaric surface θ (68) The same size and direction are rotationally symmetrical around the spiral axis. The inclination angle between the linear velocity direction on the isobaric surface and the isobaric surface is A. The centripetal force direction of each point on the isobaric surface is concave and forms an inclination angle A with the radial surface of the isobaric surface and an inclination angle π / 2+A with the tangential surface of the isobaric surface. The angle with the tangential surface or tangent of the isobaric surface can be referred to as the angle with the isobaric surface.

[0021] The linear velocities on the tangential flow section of the acceleration streamline cluster are different in magnitude but parallel in direction, and the directions of the linear velocities are all inclined at an angle of π / 2-A to the tangential flow section. The linear velocity on the acceleration streamline near the inner wall of the single-arm vortex body on the tangential flow section of the acceleration streamline cluster is smaller than the linear velocity on the acceleration streamline near the outer wall, but the pressure on the acceleration streamline near the inner wall is greater than the pressure on the acceleration streamline near the outer wall. Therefore, the acceleration on the acceleration streamline near the inner wall of the tangential flow section of the acceleration streamline cluster is greater than the acceleration on the acceleration streamline near the outer wall. It is relatively cumbersome to calculate the flow rate using the linear velocity and acceleration on the tangential flow section, and the arc length of the horizontal side of the isobaric surface has the same rate of change of the same rotation angle as the horizontal side of the tangential flow section, and the linear velocity on the isobaric surface is the same, so it is relatively simple to use the isobaric surface to calculate the flow rate. Because the vortex zone is of equal height, the change in the area of ​​the isobaric surface is manifested as the change in the arc length of its horizontal side. The arc length of the horizontal side of the isobaric surface in the vortex zone is the arc length L of the isobaric line. 等 θ , when θ<2π, L 等 θ =θP θ , when 2π≤θ≤φ–2π, L 等 θ = (2π – α)P θ = (2π – α)P 0 e –θtan(A) , when φ–2π<θ, L 等 θ = (φ–θ)P θ, the entrance of the eddy zone has an outer convex arc wall tangent to the inner spiral wall, and there is a complete and gradually shrinking tangential flow section along the eddy zone from the entrance of the eddy zone. The rotation angle of the acceleration separation zone of this device is greater than or equal to 2π, and the total rotation angle of the eddy zone is greater than or equal to 4π-α. Therefore, when θ<2π, the arc length of the isobaric line is regarded as the width of the complete tangential flow section, that is, the arc length of the isobaric line is still calculated according to the full arc length of the radial flow section of the acceleration separation zone, that is, L 等 θ = (2π – α)P θ , when φ–2π<θ, it has entered the deceleration separation zone, which has no effect on the acceleration separation zone. Therefore, the arc length of the isobaric line and the area of ​​the isobaric surface in the acceleration separation zone are calculated according to the full arc length of the radial flow section in the acceleration separation zone, i.e., L 等 θ = (2π – α)P θ , the area of ​​the isobaric surface is L 等 θ Multiplied by the height of the eddy zone, the area of ​​the isobaric surface in the acceleration separation zone decreases along the flow direction while the curvature increases. The instantaneous linear velocity difference between the front and rear points of the same streamline is calculated using the front and rear change rate of its tangential flow section.

[0022] The isobaric surface in the acceleration separation zone is distributed along the point gradient of the logarithmic spiral. The pressure gradient is distributed along the isobaric surface. The area of ​​the isobaric surface along the flow direction decreases as the radial flow cross-section of the acceleration separation zone decreases. The instantaneous pressure p of the airflow along the flow direction is θ It decreases as the area of ​​the isobaric surface decreases, that is, it decreases as the arc length of the horizontal side of the isobaric surface decreases. According to the Bernoulli equation: p+(1 / 2)ρv 2 +ρgh=C (C is the total pressure), for equal height flow, then p+(1 / 2)ρv 2 =C, then the pressure difference C–p=(1 / 2)ρv 2 , the air pressure difference force does work to increase the kinetic energy of air molecules by (1 / 2)ρ 空气 v θ 2 =p 进 –p θ , v θ is the instantaneous linear velocity of air molecules and also the instantaneous velocity of air flow, and the instantaneous air pressure difference p θ –p 出 The p decreases along the acceleration streamline direction. 进 –p θ Increases along the acceleration streamline direction, p 进 –p θ Converted into kinetic energy of air molecules (1 / 2)ρ 空气 v θ 2The airflow particles include air molecules and the substances they carry. The motion traces of air molecules coincide with the acceleration streamlines and form a logarithmic spiral. The logarithmic spiral can be regarded as the circular motion of the centripetal force center along the logarithmic spiral asymptote with continuously changing diameters. The linear velocity v of air molecules is θ It is the tangential velocity of the air molecules moving in a logarithmic spiral along the acceleration streamline, and its direction is inclined at an angle A to the acceleration streamline. The linear velocity of the air molecules v θ Along the acceleration streamline, the pressure increases as the area of ​​the isobaric surface decreases. The substances carried by the air molecules include the droplets. The air resistance (also called aerodynamic force) F 阻 =(p 进 –p θ )CS=(1 / 2)ρ 空气 v θ 2 CS, C is the air resistance coefficient, the droplet is a sphere, the air resistance coefficient of the sphere is C=0.5, S is the windward area, the windward area of ​​the sphere is S=πr 雾 2 , r 雾 is the droplet radius, ρ 空气 is the air density. The centripetal force of the droplet's circular motion points to the center of curvature of the accelerating streamline. The tangential velocity of the droplet, i.e., the linear velocity, is tangent to the curvature circle of the accelerating streamline. 雾向 =m 雾 v 雾 2 / R 雾 , R 雾 is the radius of curvature of the centripetal force of the droplet in circular motion, v 雾 is the linear velocity of the droplet in circular motion, m 雾 is the droplet mass, m 雾 =ρ 雾 V 雾 , ρ 雾 is the density of water, V 雾 is the volume of the droplet, the droplet is a sphere V 雾 = (4 / 3)πr 雾 3 , F 雾向 =m 雾 v 雾 2 / R 雾 =ρ 雾 V 雾 v 雾 2 / R 雾 = (4 / 3)πr 雾 3 ρ 雾 v 雾 2 / R 雾 = (4 / 3)r雾 Sρ 雾 v 雾 2 / R 雾 The droplets make the same logarithmic spiral motion as the air molecule trajectory in the acceleration separation zone tan(A) < 1. For any two points on any acceleration streamline, let the point with greater curvature U have a pressure p 2 , the pressure p at the point with small curvature W 1 , p 1 >p 2 , the angle between the two points is ε, and the velocity of point U is v 2 , velocity v at point W 1 , v 2 >v 1 , the curvature radius of point U is R 2 , the curvature radius R at point W 1 , R 1 >R 2 , R 2 =R 1 e –εtan(A) , U point flow cross-sectional area S 2 Width L 2 , the cross-sectional area of ​​flow at point W is S 1 Width L 1 , L 2 =L 1 e –εtan(A) The Venturi effect is manifested as the phenomenon that the flow velocity of the fluid increases when the restricted flow passes through the reduced flow section. The flow velocity v is inversely proportional to the flow section area S, that is, Q=S×v. The streamline stability in the acceleration separation zone belongs to isochoric flow. According to the Venturi effect formula Q=S×v, the flow rates at points U and W are the same, both Q, Q=S 1 ×v 1 =S 2 ×v 2 , the flow area ratio of equal height flow is equal to the width ratio, v 1 =S 2 ×v 2 / S 1 =L 2 ×v 2 / L 1 =v 2 e –εtan(A) , according to the Bernoulli equation p+(1 / 2)ρv 2 =C, p 1 +(1 / 2)ρv 1 2 =p 2 +(1 / 2)ρv 2 2 , p 1 –p 2 =(1 / 2)ρv 22 –(1 / 2)ρv 1 2 , two-point pressure difference resistance F 差阻 =(p 1 –p 2 )CS=(1 / 2)ρ 空气 CS(v 2 2 –v 1 2 )=(1 / 2)ρ 空气 CS(1–e –2εtan(A) ) 2 2 , the centripetal force difference F of two points in circular motion 差雾向 =m 雾 v 2 2 / R 2 – m 雾 v 1 2 / R 1 = (4 / 3)r 雾 Sρ 雾 (v 2 2 / R 2 –v 1 2 / R 1 ) = (4 / 3) r 雾 Sρ 雾 [1 / R 2 –e –2εtan(A) / (e εtan(A) R 2 )]v 2 2 = (4 / 3)r 雾 Sρ 雾 [(1–e –3εtan(A) ) / R 2 ]v 2 2 , and then set F 差阻 =F 差雾向 , (1 / 2)ρ 空气 CS(1–e –2εtan(A) )v 2 2 = (4 / 3)r 雾 Sρ 雾 [(1–e –3εtan(A) ) / R 2 ]v 2 2 , (1 / 2)ρ 空气 C(1–e –2εtan(A) )=(4 / 3)r 雾 ρ 雾(1–e –3εtan(A) ) / R 2 , R 2 =[(8 / 3)r 雾 ρ 雾 / ρ 空气 C] ×[(1–e –3εtan(A) ) / (1–e –2εtan(A) )], the air resistance coefficient of the sphere is C = 1 / 2, after simplification: R 2 =[(16 / 3)r 雾 ρ 雾 / ρ 空气 ]×{1+1 / [(1+e εtan(A) ) εtan(A) ]}, because e εtan(A) >1, so 0 < 1 / [(1+e εtan(A) ) εtan(A) ]<1 / 2, in the interval 0<A<π / 4, 1 / [(1+e εtan(A) ) εtan(A) ] is a monotonically decreasing function. The larger the ε, the closer the function value is to 0. Then 1<1+1 / [(1+e εtan(A) ) εtan(A) ]<3 / 2, the larger the ε, the function 1+1 / [(1+e εtan(A) ) εtan(A) ] value is closer to 1, and R 2 The closer to (16 / 3)r 雾 ρ 雾 / ρ 空气 , then (16 / 3)r 雾 ρ 雾 / ρ 空气 <R 2 <8r 雾 ρ 雾 / ρ 空气 , indicating that when the droplets are balanced by the centripetal force and at a certain temperature, ρ 雾 and ρ 空气 When the value is constant, the droplet radius r 雾 At a certain time, the curvature radius R of its vortex motion, i.e. logarithmic spiral motion, is 雾 There is a certain range, the radius of curvature R 雾 The range is (16 / 3)r 雾 ρ 雾 / ρ 空气 <R 2 <8r 雾 ρ 雾 / ρ 空气 , vortex motion curvature radius R 雾 Mainly with the droplet radius r 雾 changes, and the curvature radius R of the vortex motion at equilibrium 雾 Regardless of air flow rate, R雾 The shape of the eddy current zone varies within the range of 1×(16 / 3)r 雾 ρ 雾 / ρ 空气 to 1.5×(16 / 3)r 雾 ρ 雾 / ρ 空气 Between, radius r 雾 A certain droplet balances the air resistance and makes a vortex motion with a curvature radius R 雾 There is a limited range of variation, which can be called the centripetal force balance range, and as the rotation angle increases, it is closer to circular motion, R 雾 Take the minimum value, that is, R 雾 =(16 / 3)r 雾 ρ 雾 / ρ 空气 Assuming that the mist droplets eventually move in a circular motion, Example 2: Let ρ 雾 =1000kg / m 3 , ρ 空气 =1.293kg / m 3 , r 雾 =1.25μm, then R 雾 =(16 / 3)r 雾 ρ 雾 / ρ 空气 =(16 / 3)×1.25×10 –6 ×1000 / 1.293=0.005156m=5.156mm, 1.5R 雾 =7.734mm, indicating that the space radius for the 1.25μm radius droplet to make vortex motion is between 5.156 and 7.734mm. This space range is limited, so the vortex zone space required for the 1.25μm radius droplet to make circular motion is also limited. The isobaric radius of at least one isobaric surface in the acceleration separation zone in the vortex zone can be selected to be less than 5.156mm to restrict its motion. The space outside the vortex zone in the direction of airflow is relatively large, which is enough for the airflow to carry the droplets into the vortex zone space. The marginal conditions of the airflow to the space outside the vortex zone are not explained here. The curvature radius R of the droplet vortex motion that balances the air resistance 雾 The minimum constant that exists is (16 / 3)r 雾 ρ 雾 / ρ 空气 It can be called the centripetal force balance radius R of circular motion 平衡 , when pure air flows, due to R 空气 =(16 / 3)r 空气 ρ 空气 / ρ 空气 , then R 空气 =(16 / 3)r 空气 , the radius of curvature of the circular motion of air molecules R 空气is its molecular diameter 2r 空气 8 / 3 to 4 times the diameter of the circular motion of air molecules 2R 空气 is its molecular diameter 2r 空气 16 / 3 times, about 5.33 to 8 times, generally the average distance of gas molecules is 10 times their diameter, the diameter of the circular motion of air molecules is 2R 空气 It is about 5.33 to 8 times the molecular diameter and less than 10 times the average molecular distance;

[0023] Assume that the rotation angle at the point U with large curvature on the acceleration streamline is θ, and the angle between the airflow coming from the point W with small curvature is still ε, ε<θ, and the velocity v at point U is 2 =v θ , the curvature radius of point U is R 2 =R θ The air resistance and centripetal force of the droplets carried by the airflow to point U are balanced, that is, F 阻 =F 雾向 , and v θ =v 雾 , and R θ =R 雾 , F 阻 =F 雾向 That is (1 / 2)ρ 空气 v θ 2 CS=m 雾 v 雾 2 / R 雾 , (1 / 2)ρ 空气 v θ 2 (1 / 2)πr 雾 2 =ρ 雾 (4 / 3)πr 雾 3 v 雾 2 / R 雾 , cancel out the same terms and equal terms on both sides of the formula, and get R 雾 = (16 / 3)r 雾 ρ 雾 / ρ 空气 , radius R at point U β θ =P β θ =P 0 e –(θ+β)tan(A) The radius of curvature R of the centripetal force of the air mass point on the isobaric line 向 =R 雾 =cos(A) P β θ , isobar radius R βθ =R 雾 / cos(A), radius is r 雾 The droplet is within the isobar radius R β θ =R 雾 / cos(A) is balanced by the centripetal force F 阻 =F 雾向 And v θ =v 雾 , then R 雾 = (16 / 3)r 雾 ρ 雾 / ρ 空气 , R β θ The radius of curvature R of the acceleration streamline cluster on the isobaric surface where the isobaric line is located is the direction point W θ–ε Both are greater than R 雾 , because the flow cross section decreases, the flow velocity increases v θ–ε <v 雾 , then the centripetal force F of the droplet passing through the isobaric surface where the incoming point W is located θ-ε向 =m 雾 v θ–ε 2 / R θ–ε <m 雾 v 雾 2 / R 雾 That is F θ–ε向 <F 雾向 , the centripetal force required to approach the isobaric surface where point W is located is less than the centripetal force at equilibrium, and the air resistance F required to approach the isobaric surface where point W is located 阻θ–ε = (1 / 2)ρ 空气 v θ–ε 2 CS, the angle between the incoming point W and θ is ε, the angle between the incoming point W and the entrance of the eddy zone is θ-ε, the width ratio of the flow section where the incoming point W is located to the flow section at the entrance of the eddy zone = e –（θ–ε）tan(A) , the width ratio of the flow section at point U to the flow section at the incoming point W = e –θtan(A) / e –（θ–ε）tan(A) =e –εtan(A) , according to the Venturi effect formula v θ–ε =v 1 =v 雾 e –εtan(A) , acceleration streamline curvature radius ratio = R θ–ε / R 雾 =e εtan(A) , F 阻θ–ε =(1 / 2)ρ 空气 v θ–ε 2 CS = (1 / 2)ρ 空气 (v雾 e –εtan(A) ) 2 CS = (1 / 2)ρ 空气 v 雾 2 CS(e –εtan(A) ) 2 , F θ–ε向 =m 雾 v θ–ε 2 / R θ–ε =m 雾 (v 雾 e –εtan(A) ) 2 / (R 雾 e εtan(A) )=(m 雾 v 雾 2 / R 雾 )(e –εtan(A) ) 3 , F 阻θ–ε / F θ–ε向 =(e –εtan(A) ) 2 / (e –εtan(A) ) 3 =e εtan(A) , because εtan(A) >1, then F 阻θ–ε >F θ–ε向 , because the velocity v at the point where the centripetal force is balanced 雾 Greater than the incoming flow velocity v θ–ε And become εtan(A) The increase is in line with the law of change in the eddy current area, and the centripetal force is balanced at F 阻 =(1 / 2)ρ 空气 v θ 2 CS, F 阻 / F 阻θ–ε =(1 / 2)ρ 空气 v θ 2 CS / [(1 / 2)ρ 空气 v θ–ε 2 CS] = (1 / 2)ρ 空气 v θ 2 CS / [(1 / 2)ρ 空气 v 雾 2 CS(e –εtan(A) ) 2 ]=(e εtan(A) ) 2 , because εtan(A) >1, then F 阻 >F 阻θ-ε, because F 雾向 =m 雾 v 雾 2 / R 雾 , then F 雾向 / F θ–ε向 =m 雾 v 雾 2 / R 雾 / (m 雾 v θ–ε 2 / R θ–ε )=(e εtan(A) ) 3 =e 3εtan(A) , F 阻 :F 雾向 :F 阻θ–ε :F θ–ε向 = e 3εtan(A) :e 3εtan(A) :e εtan(A) :1, so F 阻 =F 雾向 >F 阻θ–ε >F θ–ε向 , indicating that the airflow has enough power to carry the droplets along the acceleration streamline to the centripetal force balance point;

[0024] Assume that the angle between the airflow destination point W' and point U is still ε, the angle between the destination point W' and the entrance of the eddy zone is θ+ε, and the width ratio of the destination flow section to the eddy zone entrance flow section = e –（θ+ε）tan(A) , the ratio of the flow section width at the centripetal force balance point U to the flow section width at the destination point W' = e –θtan(A) / e –（θ+ε）tan(A) =e εtan(A) , R β θ The radius of curvature R of the acceleration streamline cluster on the isobaric surface where the isobaric line is located is the destination point W' θ+ε Both are less than R 雾 , v θ+ε >v 雾 , the centripetal force F required to reach the isobaric surface at point W' θ+ε向 =m 雾 v θ+ε 2 / R θ+ε , then m 雾 v θ+ε 2 / R θ+ε >m 雾 v 雾 2 / R 雾 That is F θ+ε向 >F 雾向, the centripetal force required to move the droplet is greater than the centripetal force at equilibrium, and the air resistance F generated at the point W' 阻θ+ε =(1 / 2)ρ 空气 v θ+ε 2 CS, according to the Venturi effect formula v θ+ε =v 雾 e εtan(A) , e εtan(A) >1, so the air velocity at the destination point W' is greater than the velocity at the centripetal force balance point, that is, v θ+ε >v 雾 , acceleration streamline curvature radius ratio = R θ+ε / R 雾 =e –εtan(A) , then F 阻θ+ε =(1 / 2)ρ 空气 v θ+ε 2 CS = (1 / 2)ρ 空气 (v 雾 e εtan(A) ) 2 CS = (1 / 2)ρ 空气 v 雾 2 CS(e εtan(A) ) 2 , F θ+ε向 =m 雾 v θ+ε 2 / R θ+ε =m 雾 (v 雾 e εtan(A) ) 2 / (R 雾 e –εtan(A) )=(m 雾 v 雾 2 / R 雾 )(e εtan(A) ) 3 , then F 阻θ+ε / F θ+ε向 =(e εtan(A) ) 2 / (e εtan(A) ) 3 =e –εtan(A) , because –εtan(A) <1, then F 阻θ+ε <F θ+ε向 , F θ+ε向 / F 雾向 =(m 雾 v 雾 2 / R 雾 )(e εtan(A) )3 / (m 雾 v 雾 2 / R 雾 )=(e εtan(A) ) 3 = e 3εtan(A) , while F 阻θ+ε / F 阻 =(1 / 2)ρ 空气 v 雾 2 CS(e εtan(A) ) 2 / (1 / 2)ρ 空气 v 雾 2 CS=e 2εtan(A) , then F 阻 <F 阻θ+ε , F 阻θ+ε / F 雾向 =(1 / 2)ρ 空气 v 雾 2 CS(e εtan(A) ) 2 / (m 雾 v 雾 2 / R 雾 ) =e 2εtan(A) Then F 雾向 <F 阻θ+ε , so F θ+ε向 :F 阻θ+ε :F 雾向 =e 3εtan(A) :e 2εtan(A) : 1, or F θ+ε向 :F 阻θ+ε :F 雾向 = 1:e –εtan(A) :e –3εtan(A) , F θ+ε向 >F 阻θ+ε >F 雾向 This means that after passing the centripetal force equilibrium point, both the centripetal force and the air resistance must increase, while the air resistance can only increase by e. 2εtan(A) –1 times, but the centripetal force needs to be increased by e 3εtan(A) –1 times, because the centripetal force of the droplets has been balanced, the increase in air resistance is lower than the required amount of centripetal force, so the outgoing airflow does not have enough power to carry the droplets through the centripetal force balance point in the direction of rotation of the acceleration streamline;

[0025] The radius of curvature R of a droplet with a certain radius making a circular motion balanced with air resistance 雾 There is a minimum constant, namely (16 / 3)r 雾 ρ 雾 / ρ 空气It can be called the centripetal force equilibrium curvature radius R 平衡 , the reciprocal of the radius of curvature of the centripetal force balance 1 / R 平衡 is the centripetal force equilibrium curvature, the centripetal force equilibrium curvature of the droplet is 1 / R 平衡 =(3 / 16)ρ 空气 / (r 雾 ρ 雾 ), the centripetal curvature of the airflow particle is 1 / R 向 =1 / [cos(A) P β θ ]=1 / [cos(A) P 0 e –(θ+β)tan(A) ], the curvature value of at least one point on the logarithmic spiral line of the horizontal projection of the spiral wall of the single-arm vortex in the acceleration separation zone is greater than the centripetal force equilibrium curvature of the removed droplet, that is, 1 / R θ >1 / R 平衡 , 0<θ<φ–2π, then 1 / R θ =1 / [cos(A)P θ ]=1 / [cos(A)P 0 e –θtan(A) ],1 / [cos(A)P 0 e –θtan(A) ]>1 / R 平衡 , P 0 e –θtan(A) <R 平衡 / cos(A),P 0 e –θtan(A) <(16 / 3)(r 雾 ρ 雾 ) / [ρ 空气 cos(A)], when θ takes φ–2π, P 0 e – (φ–2π) tan(A) <(16 / 3)(r 雾 ρ 雾 ) / [ρ 空气 cos(A)],P φ–2π <(16 / 3)(r 雾 ρ 雾 ) / [ρ 空气 cos(A)],P φ–2π cos(A)<(16 / 3)(r 雾 ρ 雾 ) / ρ 空气 , R φ–2π <(16 / 3)(r 雾 ρ 雾 ) / ρ 空气, that is, when θ takes φ–2π, the curvature radius of the logarithmic spiral point of the inner spiral wall at the end of the acceleration separation zone is smaller than the centripetal force equilibrium curvature radius of the removed droplets. Since the curvature radius before the end of the logarithmic spiral of the inner spiral wall in the acceleration separation zone is all larger than the curvature radius of the end, the curvature radius before the end includes a radius larger than the centripetal force equilibrium curvature radius of the removed droplets, and the curvature radius before the end also includes a radius smaller than or partially smaller than the centripetal force equilibrium curvature radius of the removed droplets; if the curvature radius before the end is smaller than or partially smaller than the centripetal force equilibrium curvature radius of the removed droplets, the curvature radius of the end is smaller, that is, at least the curvature radius of the logarithmic spiral point of the inner spiral wall at the end of the acceleration separation zone is smaller than the centripetal force equilibrium curvature radius of the removed droplets. For the curvature, at least the curvature of the logarithmic spiral point of the inner spiral wall at the end of the acceleration separation zone is greater than the centripetal force equilibrium curvature of the removed droplets; when θ takes 0, P 0 <(16 / 3)(r 雾 ρ 雾 ) / [ρ 空气 cos(A)],P 0 cos(A)<(16 / 3)(r 雾 ρ 雾 ) / ρ 空气 , R 0 <(16 / 3)(r 雾 ρ 雾 ) / ρ 空气, that is, when θ takes 0, the curvature radius of the logarithmic spiral point of the inner wall at the starting end of the acceleration separation zone is smaller than the centripetal force equilibrium curvature radius of the removed droplets. Then, since the curvature radius after the starting end of the logarithmic spiral of the inner wall of the acceleration separation zone is smaller than the curvature radius of the starting end, the curvature radius after the starting end of the logarithmic spiral of the inner wall of the acceleration separation zone is smaller than the centripetal force equilibrium curvature radius of the removed droplets. That is, all the curvature radii of the logarithmic spiral of the inner wall of the acceleration separation zone are smaller than the centripetal force equilibrium curvature radius of the removed droplets. For the curvature, the curvature of all the logarithmic spiral points of the inner wall at the end of the acceleration separation zone is greater than the centripetal force equilibrium curvature of the removed droplets. θ takes any value between 0 and φ–2π. Since the polar diameter of the logarithmic spiral gradually decreases, the curvature radius of the part of the logarithmic spiral of the inner wall of the acceleration separation zone with a rotation angle greater than θ is greater than the centripetal force equilibrium curvature radius of the removed droplets. The curvature radius of the part with a rotation angle less than θ is less than the centripetal force balance curvature radius of the removed droplets. For the curvature, the curvature of the part with a rotation angle greater than θ on the logarithmic spiral of the spiral wall in the acceleration separation zone is less than the centripetal force balance curvature of the removed droplets, and the curvature of the part with a rotation angle less than θ is greater than the centripetal force balance curvature of the removed droplets. In this way, the curvature of the logarithmic spiral of the spiral wall in the acceleration separation zone that is greater than the centripetal force balance curvature of the removed droplets is reduced in range, and the corresponding spiral wall in the acceleration separation zone has a certain length, which is less than the length of the logarithmic spiral. In summary, the above three situations are that at least one point on the logarithmic spiral of the horizontal projection of the spiral wall in the single-arm vortex body in the acceleration separation zone has a curvature value greater than the centripetal force balance curvature of the removed droplets, that is, at least one point on the logarithmic spiral of the spiral wall in the acceleration separation zone has a polar diameter less than 1 / cos(A) of the centripetal force balance curvature radius of the removed droplets.

[0026] The radii of the droplets carried by the airflow are different and generally have a certain range. The centripetal force balance curvature or curvature radius of the droplets also has a certain range corresponding to the radius range of the droplets. The maximum curvature within the logarithmic spiral curvature range of the spiral wall in the single-arm vortex body in the acceleration separation zone can be made larger than the maximum curvature within the centripetal force balance curvature range of the removed droplets. The method is that the logarithmic spiral curvature of the spiral wall in the single-arm vortex body at the end of the acceleration separation zone is larger than the maximum curvature within the centripetal force balance curvature range of the removed droplets. The partial curvature within the logarithmic spiral curvature range of the spiral wall in the single-arm vortex body in the acceleration separation zone can also be made larger than the maximum curvature within the centripetal force balance curvature range of the removed droplets. The method is that the logarithmic spiral curvature of the spiral wall in the single-arm vortex body in the middle of the acceleration separation zone is larger than the centripetal force balance curvature of the removed droplets. The maximum curvature within the range of balanced curvature can also make all curvatures within the range of logarithmic spiral curvature of the spiral wall in the single-arm vortex body in the acceleration separation zone greater than the maximum curvature within the range of centripetal force balanced curvature of the removed droplets. The method is that the logarithmic spiral curvature of the spiral wall in the single-arm vortex body at the starting end of the acceleration separation zone is greater than the maximum curvature within the range of centripetal force balanced curvature of the removed droplets. In summary, the above three situations are that at least one point on the logarithmic spiral of the horizontal projection of the spiral wall in the single-arm vortex body in the acceleration separation zone has a curvature value greater than the maximum curvature within the range of centripetal force balanced curvature of the removed droplets, and as for the curvature radius, at least one point on the logarithmic spiral of the horizontal projection of the spiral wall in the single-arm vortex body in the acceleration separation zone has a curvature radius smaller than the minimum curvature radius within the range of centripetal force balanced curvature of the removed droplets.

[0027] The logarithmic spiral curvature 1 / R of the spiral wall on the acceleration streamline cluster in the acceleration separation zone and the spiral wall in the single-arm vortex θ The corresponding isobaric surface P β θ , isobaric surface P β θ When the logarithmic spiral of the spiral wall of the single-arm vortex body intersects obliquely, β=0, which is briefly described as the isobaric surface P θ , P θ =R θ / cos(A), isobaric surface P θ The corresponding point of each streamline is P β θ =P θ e –βtan(A) , isobaric surface P θ The curvature of the accelerating streamline on the β θ , 1 / R β θ =1 / [cos(A)P β θ ], isobaric surface P θ The curvature of the acceleration streamline on the inner spiral wall is equal to the logarithmic spiral curvature of the inner spiral wall, that is, 1 / R β θ =1 / Rθ , isobaric surface P θ The curvature of the upward accelerating streamline cluster is greater than 1 / R θ , isobaric surface P θ The centripetal curvature of the airflow particle on the outward acceleration streamline is 1 / R 去向 Both are greater than the isobaric surface P θ The curvature of the accelerating streamline on the θ That is 1 / R 去向 >1 / R θ , with a radius of r 雾 The droplet passes through the isobaric surface P at an inclination angle A. θ The centripetal force is balanced, so the radius is r 雾 The centripetal force of the droplet is balanced by curvature 1 / R 平衡 With isobaric surface P θ The curvature of the accelerating streamline on the θ Equal to 1 / R θ =1 / R 平衡 , then the isobaric surface P θ The radius P θ =R 平衡 / cos(A), isobaric surface P at the equilibrium point θ The angle between the radius of the droplet and the radius of curvature of the centripetal force balance is the inclination angle A, and the isobaric surface P θ The tangent direction of the droplet forms an inclination angle π / 2+A with the centripetal force direction of the droplet. After the force balance along the streamline motion direction, the droplet no longer moves in a logarithmic spiral with the original inclination angle along the air flow streamline, while the radial pressure difference force still has potential. The radial pressure difference force is manifested as the droplet moving along the isobaric surface P θ As the droplet moves in the direction of the inclination angle A, the curvature of the isobaric surface that the droplet subsequently passes through increases, and the inclination angle between the droplet and the isobaric surface that the droplet subsequently passes through gradually decreases. θ The component force in the direction of the inclination angle decreases and the speed increases. The droplets move along the isobaric surface P θ The normal force component in the direction of the inclination angle, i.e. the centripetal force, remains unchanged, while the inclination angle between the centripetal force and the radius of the isobaric surface that it subsequently passes through decreases. The tangent direction of the curvature circle of the centripetal force balance point on the acceleration streamline of the droplet is the isobaric surface P. θ The inclination angle direction breaks away from the acceleration streamline, and then enters the isobaric surface P tangentially θ–In[cos(A)] / tan(A) , P θ–In[cos(A)] / tan(A) =cos(A)P θ , because P θ–In[cos(A)] / tan(A) =P 0 e –{θ–In[cos(A)] / tan(A)}tan(A) =P 0 e {–θtan(A)+In[cos(A)]} =P 0 e –θtan(A) e In[cos(A)] =cos(A)P θ , P θ–In[cos(A)] / tan(A) =R 平衡, isobaric surface P θ–In[cos(A)] / tan(A) The curvature of 1 / cos(A)P θ =1 / R 平衡 , isobaric surface P θ The curvature 1 / P θ =cos(A) / R 平衡 , isobaric surface P θ The curvature of the isobaric surface P θ–In[cos(A)] / tan(A) The curvature of the isobaric surface P is cos(A) times θ–In[cos(A)] / tan(A) The upper inclination angle is zero, the radial pressure difference force is balanced with the centripetal force of the droplets, and the isobaric surface P θ The pressure on the isobaric surface P is greater than θ–In[cos(A)] / tan(A) The pressure on the isobaric surface P θ The velocity on the isobaric surface P is less than that on the isobaric surface P θ–In[cos(A)] / tan(A) The velocity on the acceleration streamline is insufficient to maintain the original inclination angle of the droplet. The radial pressure difference between the two isobaric surfaces that makes the droplet turn is released as the inclination angle gradually disappears. The movement of the droplet between the two isobaric surfaces can be regarded as linear motion. The droplet moves to the isobaric surface P θ–In[cos(A)] / tan(A) The velocity increases as the droplet moves upward, and the droplet motion changes from an inclined balance with the isobaric surface to a vertical balance. θ–In[cos(A)] / tan(A) The pressure difference on both sides is just enough to keep the droplets on the isobaric surface P θ–In[cos(A)] / tan(A) The radius is R 平衡 The equilibrium circular motion, isobaric surface P θ–In[cos(A)] / tan(A) Perpendicular to the centripetal force of the droplet, the linear velocity of the balanced circular motion has no inclination angle or the inclination angle is zero, and the isobaric surface P θ It can be called the offline isobaric surface of the droplet or the inclined equilibrium isobaric surface. θ–In[cos(A)] / tan(A) It can be called the droplet's departure isobaric surface or vertical equilibrium isobaric surface. If the mass of the droplet remains unchanged, it can continue to move along the departure isobaric surface. Because the isobaric surface is an arc-shaped surface cut by the inner spiral wall, the droplet will finally hit the inner spiral wall along the departure isobaric surface. If the mass of the droplet changes slightly, it will hit the wall near the intersection of the departure isobaric surface and the inner spiral wall. The radius is r 雾 The droplets break away from the air flow streamline on the offline isobaric surface and slide toward the off-field isobaric surface. They move in a circular motion through the off-field isobaric surface and break away from the flow field and hit the wall. The radius is less than r 雾 The droplets can pass through the isobaric surface P θ When the droplets reach the offline isobaric surface corresponding to the centripetal force balance curvature, they are separated from the airflow streamlines, and then move along the departure isobaric surface corresponding to the centripetal force balance curvature. At this point, the droplets reach the departure wall. It is necessary to accelerate the separation area. At least one point on the logarithmic spiral of the spiral wall has a polar diameter smaller than the centripetal force balance curvature radius of the droplets to be removed, that is, P θ <R 平衡, converted into a curvature of at least one point on the logarithmic spiral of the spiral wall in the accelerated separation zone that is greater than the centripetal force equilibrium curvature of the removed droplet 1 / cos(A), that is, 1 / R θ >1 / [R 平衡 cos(A)]; and for the droplets to be offline, it is only necessary that at least one point on the logarithmic spiral of the spiral wall in the acceleration separation zone has a polar diameter smaller than 1 / cos(A) of the centripetal force equilibrium curvature radius of the removed droplets, which is converted into a curvature that is greater than the centripetal force equilibrium curvature of the removed droplets at least one point on the logarithmic spiral of the spiral wall in the acceleration separation zone;

[0028] The airflow through the device is constrained by the shape of the spiral shell to form a coaxial vortex flow field. In the vortex flow field, the flow cross-section decreases and the pressure decreases, the flow cross-section decreases and the flow velocity increases, the pressure decreases and the temperature decreases, and the airflow carries droplets of different radii to perform vortex motion with a certain inclination angle to form a logarithmic spiral streamline (or a vortex motion with a periodic same inclination angle to form a logarithmic spiral arc streamline). The airflow streamlines in the vortex flow field are similar and have the same inclination angle. The same curvature points on the streamline cluster form an arc-shaped isobaric surface, and a curved surface is formed along the contraction direction of the streamline cluster. The coaxial arc isobaric surface with a gradually increasing rate, the coaxial arc isobaric surface is distributed along the curvature gradient of the logarithmic spiral, the linear velocity direction of the airflow particle on the streamline is inclined at an angle to the tangent of the arc isobaric surface, the centripetal force direction of the airflow particle is inclined at an angle to the radial direction of the arc isobaric surface, the centripetal force balance curvature of a certain radius droplet is a constant, the arc isobaric surface includes the departure isobaric surface which is perpendicular to the centripetal force of the droplet and whose curvature is equal to the centripetal force balance curvature of the droplet, and the cos(A) which is inclined to the centripetal force of the droplet and whose curvature is equal to the centripetal force balance curvature of the droplet The curvature ratio of the offline isobaric surface and the off-site isobaric surface is the cosine of the inclination angle, i.e., cos(A). The curvature of the offline isobaric surface is smaller than that of the off-site isobaric surface. The pressure of the offline isobaric surface is greater than that of the off-site isobaric surface. The droplets first pass through the offline isobaric surface at an inclination. The curvature of the airflow streamline on the offline isobaric surface is the same as the curvature of the centripetal force balance of the droplets. The centripetal force of the droplets is balanced with the airflow resistance. The centripetal force direction of the droplets is insufficient and the movement direction is separated from the airflow streamline. The droplets are affected by the offline isobaric surface along the inclination angle of the equilibrium point. The pressure difference between the isobaric surface and the departure isobaric surface moves away from the airflow streamline and then tangentially enters the departure isobaric surface. The curvature of the departure isobaric surface is the same as the centripetal force balance curvature of the droplets. The pressure difference on both sides of the departure isobaric surface continues to balance the centripetal force of the droplets. The droplets move in a circular motion along the departure isobaric surface until they leave the flow field and collide with the inner spiral wall. Droplets of different radii continuously pass through the corresponding offline isobaric surface and the departure isobaric surface and then hit the wall. The motion state of the droplets is transformed from vortex motion with an inclination angle to circular motion without an inclination angle, thereby achieving gas-liquid separation.

[0029] The flow cross-section at the end of the acceleration separation zone is the smallest, the pressure is the smallest, the flow velocity is the largest, and the temperature is the lowest. After passing through the end of the acceleration separation zone, the airflow enters the deceleration separation zone and continues to rotate. The flow cross-section in the deceleration separation zone increases, the pressure increases, the flow velocity decreases, and the temperature rises. Then, after continuous rotation in the screw eye zone, it is discharged from the cover screw eye and the bottom screw eye. The droplets form a liquid film on the inner screw wall. The liquid film flows down along the wall under the action of gravity and gathers on the bottom of the spiral roll. The liquid film on the bottom of the spiral roll is pushed by the airflow to the bottom screw eye and discharged from the spiral roll unit.

[0030] The formula 1-e (α–2π)tan(A) ≥e –φtan(A) It represents the spatial proportional relationship between the spiral shell and the eddy zone. The larger the inclination angle A is, the faster the spiral shell shrinks and the smaller the eddy zone space is. The larger the angle α between the two spiral walls of the spiral shell is, the thicker the spiral shell is and the narrower the eddy zone space is. The narrow eddy zone space means a narrow flow cross-section. The narrow flow cross-section means a short isobar arc. The short isobar arc means a small total polar angle φ is required.

[0031] Demisting is accompanied by dehumidification. Usually, the humidity of the airflow carrying the mist droplets is saturated or even oversaturated. According to the Kelvin formula: RT 0 In( p / p 0 )=2γM / (ρ 水 r'), p 0 is the saturated vapor pressure on the plane, p is the saturated vapor pressure on the surface. The saturated vapor pressure is the pressure at a certain temperature under closed conditions. T 0 The pressure of the vapor of a solid or liquid in equilibrium with the p / p 0 is the supersaturation on the plane, r' is the radius of curvature of the surface, r' is positive for convex surfaces and negative for concave surfaces, γ, M and ρ 水 They are the surface tension, molar mass and density of the liquid. When the curved surface is convex, such as a fog drop, its saturated vapor pressure is greater than that on a flat surface. If it is together with the flat surface, the vapor pressure in its space, that is, the external pressure, is saturated for the fog drop and supersaturated for the flat surface. The fog drop is in a phase equilibrium state while the flat surface is in a condensation state. If the temperature is kept constant for a period of time, the water vapor condenses toward the flat surface, causing the external pressure to decrease and the fog drop evaporation rate to increase, which reduces its own curvature radius. If the temperature is lowered, the external pressure is supersaturated for the fog drop and the supersaturation increases for the flat surface. The fog drop also enters a condensation state, and the fog drop becomes a condensation nucleus with an increased curvature radius. According to Charles' law: p=p 0 (1+t / 273), Bernoulli equation: p+(1 / 2)ρv 2=C (C is the total pressure) and the Venturi effect formula: Q=S×v, then the gradual contraction process of the acceleration separation zone in the eddy zone of the device is an isochoric flow. During the process, the airflow pressure decreases, the flow rate increases, and the temperature decreases. The saturated vapor pressure of the water vapor plane decreases with the temperature, and the humidity-saturated airflow tends to be supersaturated. The airflow temperature continues to decrease and the heat absorption increases. The condensation amount of water vapor is greater than the evaporation amount. The water vapor condenses toward the droplets and the wall. The heat released by the condensation of water vapor is transferred to the airflow, droplets and wall. The temperature of the airflow, droplets and wall is in dynamic equilibrium, and the airflow temperature decreases without The water vapor continuously absorbs heat and condenses. The heat of vaporization of water is high and the energy it carries is large. The amount of water vapor condensed is subject to the saturated vapor pressure of the airflow. The water vapor condenses on the droplets and increases the radius of the droplets. The radius of the droplets increases and the radius of the centripetal force balance curvature increases, that is, the centripetal force balance curvature decreases. The radius of the offline isobaric surface and the off-site isobaric surface of the droplets also increase. The water vapor condensed on the droplets is removed along with the droplets. The volume of the condensed droplets increases, and the radius of the centripetal force balance curvature increases, thereby enhancing the demisting effect. The water vapor condensed on the wall and the droplets that touch the wall flow out of the spiral unit with the liquid film, making the wall A continuous cold end is formed. After the droplets are separated, the airflow takes the heat absorbed in the process out of the vortex area. After the airflow is discharged from the vortex area, the pressure and temperature rise. After the airflow is discharged, the temperature rises, and a continuous hot end is formed outside the spiral unit outlet. Because the outflow of the airflow takes away the heat and the condensation temperature of water vapor is lower than the temperature of the incoming flow, the wall temperature is lower than the temperature of the incoming flow. The thermal conductivity of the solid wall is faster than the thermal conductivity of the gas, and the heat conduction of the wall makes the overall temperature of the device lower than the temperature of the incoming flow. The subsequent incoming flow enters the vortex area and reacts with the low-temperature wall generated by the previous outflow to release more heat than the previous outflow. The amount of water is greater, thereby expanding the cooling temperature difference of the subsequent incoming flow. The expansion of the cooling temperature difference increases the heat absorption of the airflow and the condensation of water vapor. In this way, the heat exchange rate of the incoming flow, the environment and the overall device is balanced, and the temperature difference when the heat exchange rate is balanced remains stable. Because the latent heat of vaporization of water is much greater than the specific heat of the airflow, when the condensation amount is large, the airflow is heated up. However, when the droplets are removed, the droplets in the isochoric deflow are reduced and the evaporation area is reduced. The reduction in the evaporation area causes the secondary evaporation amount of the isochoric deflow after heating to be always less than the condensation amount before heating. Therefore, the water content of the airflow in the accelerated separation zone is always decreasing.The device has a certain dehumidification function, and adding auxiliary devices can improve the dehumidification efficiency. For example, a water storage tank is installed at the bottom of the device, and a fogging device and a circulation pump are installed in the water storage tank. The water storage tank, the fogging device, the circulation pump and the device form a fog water circulation system for fogging, demisting and dehumidification, and water recovery, which can enhance the dehumidification effect. The water collected by the device flows back to the water storage tank and then enters the spiral unit in the device again after atomization as the working medium. The amount of fog in the spiral unit increases, the humidity increases, and the structure cools down during the working process. The working medium fog and the fog droplets carried by the airflow are mixed and are Remove the return water collected inside the device. The circulating water atomization process is accompanied by evaporation, which increases the heat carried and reduces the water temperature in the water storage tank. After condensation and separation, the heat is taken away by the airflow, and the temperature of the part of the structure where the return water flows through the device also decreases. After continuous circulation for a period of time, the amount of water collected by the device increases, and the temperature of the circulating water and the temperature of the device are continuously reduced. The temperature difference between the inside of the device and the incoming airflow continues to expand, and the vapor pressure of the incoming airflow decreases faster when passing through the device, and the humidity of the incoming airflow decreases faster, resulting in a continuous increase in the dehumidification effect; due to Charles' law: p=p; 0 (1+t / 273), Bernoulli equation: p+(1 / 2)ρv 2 =C, C is the total pressure, p 0 is the atmospheric pressure at 0℃, the air density ρ, and the temperature of p is t 2 , then p=p 0 (1+t 2 / 273), let the temperature of C be t 1 Then C=p 0 (1+t 1 / 273), substitute the above two equations into p+(1 / 2)ρv 2 =C gets t 1 –t 2 =(273 / 2)ρv 2 / p 0 , Example 3: Assume C = 101325Pa, t 1 =25℃, v=3m / s, then p 0 =92824.59 Pa, t 1 –t 2 =0.01711℃, t 2 =24.98289℃; Assume that the angle between the polar angle of θ at the destination point W' and the point U in the spiral unit acceleration separation zone is still ε, point U is still the equilibrium point, the angle between the destination point W' and the entrance of the eddy zone is θ+ε, and the width ratio of the destination flow section to the entrance of the eddy zone is L θ+ε / L 0 =e –（θ+ε）tan(A) , the ratio of the centripetal force balance point to the width of the outgoing flow section is L θ / L θ+ε =e –θtan(A) / e –（θ+ε）tan(A) =e εtan(A) According to the Venturi effect formula Q=S×v, the flow rate at point W' is the same as that at point U, both are Q, Q=S θ ×v θ =S θ+ε ×v θ+ε , the flow area ratio of equal height flow is equal to the width ratio, v θ+ε =S θ ×v θ / S θ+ε =L θ ×v θ / L θ+ε =v θ e εtan(A) , according to Charles' law, there is a point U at p θ =p 0 (1+t θ / 273), point W' at p θ+ε =p 0 (1+t θ+ε / 273), according to the Bernoulli equation, at point U and point W' p θ+ε +(1 / 2)ρv θ+ε 2 = p θ +(1 / 2)ρv θ 2 , then the temperature difference t θ –t θ+ε =(273 / 2)ρ(v θ+ε 2 –v θ 2 ) / p 0 =(273 / 2)ρ(e 2 εtan(A) –1) v θ 2 / p 0 , Example 4: Let e εtan(A) =2, citing example 3 data C=p 0 (1+t 1 / 273), p 0 =92824.59,t 1 =25℃,v θ =v=3m / s,t θ =t 2 =24.98289℃, then v θ+ε =6m / s, then the temperature difference t θ –t θ+ε =0.05134℃, t θ+ε=24.93155℃, and then assume that the airflow is driven by a centrifugal fan with a flow rate of Q=200m³ / h, and the wind speed at the inlet of the spiral unit is θ=0 and v 0 =3m / s, temperature difference t 0 –t ε =0.05134℃, the specific heat of air is 1030J / (kg·℃), and water circulation is used to make fog at the same time, the specific heat of water is 4200J / (kg·℃), then the temperature that can be reduced by one kilogram of water flow per hour = air density × wind flow × temperature difference × air specific heat / (water specific heat × water flow) = 1.293×200×1030 / (4200×1)×0.05134=3.26℃, because the time unit of wind flow and water flow is the same, and the ratio of wind flow and water flow per unit time is the same, so the temperature difference is also the instantaneous temperature difference under the flow ratio, and the actual temperature difference of the spiral unit made of benign thermal conductive material is lower than the calculated temperature difference; the cumulative dehumidification effect of this device produced by long-term operation in a certain space is better, and it is suitable for civil places with limited humidity.

[0032] The spiral unit also includes at least one built-in single-arm vortex body to divide the acceleration separation zone or vortex zone into a plurality of sub-acceleration separation zones or sub-vortex zones, a built-in single-arm vortex body that curls horizontally around the spiral core axis, the inclination angles of the two walls of the built-in single-arm vortex body are equal to the inclination angles of the inner spiral wall of the spiral shell, and the similarity relationship between the built-in single-arm vortex body and the spiral shell includes: (1) the angle between the horizontal projection logarithmic spiral of the outer spiral wall of the built-in single-arm vortex body and the outer spiral wall of the spiral shell is equal to the angle between the horizontal projection logarithmic spiral of the inner spiral wall of the built-in single-arm vortex body and the inner spiral wall of the spiral shell, and the outer spiral wall of the built-in single-arm vortex body is parallel to the inner spiral wall of the spiral shell. (2) The included angle of the horizontally projected logarithmic spiral of the spiral wall and the included angle of the horizontally projected logarithmic spiral of the two spiral walls of the spiral shell are equal, and the built-in single-arm vortex body and the spiral shell are similar; (3) The included angle of the horizontally projected logarithmic spiral of the outer spiral wall of the built-in single-arm vortex body and the outer spiral wall of the spiral shell and the included angle of the horizontally projected logarithmic spiral of the spiral wall of the built-in single-arm vortex body and the inner spiral wall of the spiral shell are not equal, while the included angle of the horizontally projected logarithmic spiral of the outer spiral wall of the built-in single-arm vortex body and its own inner spiral wall and the included angle of the horizontally projected logarithmic spiral of the two spiral walls of the spiral shell are not equal, and the corresponding spiral walls of the built-in single-arm vortex body and the spiral shell are still similar but with different similarity ratios. Since the inclination angles of the two walls of the built-in single-arm vortex body are equal to the inclination angle of the spiral shell, the streamlines in the multiple sub-acceleration and separation zones where the corresponding spiral walls of the built-in single-arm vortex body and the spiral shell are similar but with different similarity ratios are still similar streamlines. Take the similarity relationship between the built-in single-arm vortex body and the spiral shell (1) as an example: the spiral shell, as the first single-arm vortex body (1010), itself encloses the vortex zone of the entire spiral unit, the angle between the two walls of the spiral shell is α, and the vortex zone of the spiral unit is divided into an acceleration separation zone and a deceleration separation zone. In the acceleration separation zone, N built-in similar single-arm vortex bodies can be arranged according to the angle 2π-α between the two walls of the acceleration separation zone, where N is a positive integer, to form N+1 sub-acceleration separation zones, and the equally divided angle of the sub-acceleration separation zones is 2π / (N+1)-α. The single-arm vortex bodies arranged inward from the first single-arm vortex body can be called the N+1th single-arm vortex body in order from the outside to the inside. If the first single-arm vortex body A built-in similar single-arm vortex body is arranged inside, which is the second single-arm vortex body (127), and the angle of division is π-α, which is equally divided to form the first acceleration separation zone (501) and the second acceleration separation zone (502); if two built-in similar single-arm vortex bodies are arranged inside the first single-arm vortex body, which are the second single-arm vortex body and the third single-arm vortex body, and the angle of division is 2π / 3-α, which is equally divided to form the first acceleration separation zone, the second acceleration separation zone and the third acceleration separation zone; N similar built-in single-arm vortex bodies divide the acceleration separation zone into N+1 sub-acceleration separation zones, and the similarity ratio of the logarithmic spiral of the inner spiral wall and the logarithmic spiral of the outer spiral wall of each built-in single-arm vortex body itself is e –αtan(A) The similarity ratio of the logarithmic spiral of the inner spiral wall and the logarithmic spiral of the outer spiral wall is the same as that of the first single-arm vortex body. The wall angles of the sub-acceleration separation zones enclosed by adjacent built-in single-arm vortex bodies are all 2π / (N+1)–α. The sub-acceleration separation sections are similar. The similarity ratio of the logarithmic spiral of the adjacent inner spiral wall and the logarithmic spiral of the outer spiral wall of two adjacent similar built-in single-arm vortex bodies is e[2π / (N+1)–α]tan(A) The sum of the angles between the spiral shell, the built-in single-arm vortex body and each sub-acceleration separation zone is (N+1)α+(N+1)[2π / (N+1)–α]= 2π. The two ends of each single-arm vortex body include an outer end convex arc wall and an inner end convex arc wall. The ends of N similar built-in single-arm vortex bodies can be extended according to their front geometric relationship, and the longest can reach the edge circular surface of the spiral eye area to form a built-in single-arm vortex body in the full-length vortex area. The built-in full-length single-arm vortex body (128) divides the entire vortex area into N+1 sub-vortex areas, thereby extending the sub-acceleration separation area. The extended sub-acceleration separation area is closer to the edge circular surface of the spiral eye area, thereby shortening the sub-deceleration separation area and enhancing the separation effect. Multiple built-in single-arm vortex bodies in the acceleration separation area with equal angles between their own outer spiral walls and inner spiral walls can be extended according to their front geometric relationship to the edge circular surface of the spiral eye area to form a built-in full-length single-arm vortex body in the vortex area. The built-in single-arm vortex body has a difference in the angle between the outer spiral wall and the inner spiral wall, that is, they are not equal. The built-in single-arm vortex body can be arranged in the acceleration separation zone of the spiral shell along the angle between the two walls within the angle 2π-α. The angle between the outer spiral wall and the inner spiral wall of the built-in single-arm vortex body is less than 2π-α. The outer spiral wall and the inner spiral wall of the built-in single-arm vortex body are similar to the two spiral walls of the spiral shell but not similar as a whole. Multiple built-in single-arm vortex bodies in the acceleration separation zone with unequal angles between the outer spiral wall and the inner spiral wall can be extended to the edge circular surface of the spiral eye zone according to the geometric relationship of the front part to form a built-in full-length single-arm vortex body in the vortex zone. The spiral unit including multiple built-in single-arm vortex bodies is more suitable for occasions with large airflow and large droplet size. The built-in single-arm vortex body has a reinforcing effect on the spiral unit.

[0033] The area of ​​the cap screw eye or the bottom screw eye is the area of ​​the screw eye circle S1, S1=πP φ 2 Considering that there is water accumulation on the bottom of the spiral, the inlet surface area S2 of the spiral unit is greater than or equal to the sum of the areas of the cover screw eye and the bottom screw eye, that is, S2 ≥ 2S1 to ensure that the flow rate is not affected by the accumulation of water. The height of the vortex zone is the height of the spiral shell H (129), and the inlet surface area of ​​the spiral unit S2 = L 0 ×H, the inlet width of the spiral unit is L 0 , L 0 ×H≥2πP φ 2 , then H ≥ 2πP φ 2 / L 0 , because L 0 =P 0 –P’ 2π =P 0 –P 0 e (α–2π)tan(A) =P 0 (1–e (α–2π)tan(A) )Substitute into H≥2πP φ 2 / L 0, we get H ≥ 2πP 0 2 e –2φtan(A) / [P 0 (1–e (α–2π)tan(A) )],H≥2πP 0 e –2φtan(A) / (1–e (α–2π)tan(A) ), H ≥ 2πP 0 e –φtan(A) [e –φtan(A) / (1–e (α–2π)tan(A) )],H≥2πP φ [e –φtan(A) / (1–e (α–2π)tan(A) )], the height of the spiral shell is greater than or equal to 2πe of the radius of the spiral eye circle –φtan(A) / (1–e (α–2π)tan(A) ) times.

[0034] The horizontal projection lines of the outer contours of the spiral cover and spiral bottom of the spiral unit with a built-in single-arm scroll body include the horizontal projection line of the outer spiral wall of the spiral shell in the range from 0 to 2π, the horizontal projection line of the convex arc wall at the outer end of the spiral shell, the horizontal projection line of the width edge line of the spiral unit entrance, and the horizontal projection line of the convex arc wall at the outer end of the built-in single-arm scroll body.

[0035] The device is placed in the ventilation duct, and when the sum of the inlet areas of the spiral unit is close to the cross-sectional area of ​​the ventilation duct, the inlet of the spiral unit is sealed and connected to the variable diameter pipeline to connect the incoming airflow, and at the same time, the two screw holes of the spiral unit are sealed and connected to the variable diameter pipeline to connect the outgoing airflow. It is also possible to set a cover baffle (101) on the outer shell of the spiral unit in the peripheral space between the inlet of the spiral unit and the cover screw hole to be connected to the spiral cover, and at the same time, set a bottom baffle (102) on the outer shell of the spiral unit in the peripheral space between the inlet of the spiral unit and the bottom screw hole to connect the spiral unit. The top and bottom partitions are connected, the top partition and the bottom partition include a 5-shaped partition (1014), an L-shaped partition, and a groove-shaped partition. One side of the partition is connected to the spiral cover or the spiral bottom, and the other side of the partition is connected to a fixed frame and fixed in the ventilation duct. The fixed frame is connected to the exposed edge formed by the partition and the spiral unit and seals and isolates the space outside the spiral unit in the ventilation duct, ensuring that the airflow in the ventilation duct only passes through the vortex area and the spiral eye area of ​​the spiral unit. The top partition and the bottom partition are of the same height. The height of the partition is h (130). Since the circular area of ​​the spiral eye is S1=πP φ 2 , the cross-sectional area of ​​the airflow after the horizontal turn of the two screw eyes is greater than or equal to the circular area of ​​the two screw eyes. Assume that the minimum cross-sectional area of ​​the airflow after the horizontal turn is the square area h×h, h×h≥πP φ 2 , then h ≥ π 1 / 2 P φThe horizontal projection shape of the 5-shaped partition is the shape of the outer contour horizontal projection line of the spiral cover or spiral bottom from π / 2 to 2π, which is not longer than the horizontal projection line of the interval. The outer contour horizontal projection line from π / 2 to 2π can also be regarded as the interval from 0 to –3π / 2 in the negative direction. The outer contour horizontal projection line from 0 to –3π / 2 of the spiral cover or spiral bottom includes the horizontal projection line of the convex arc wall at the outer end of the spiral shell, the horizontal projection line of the spiral unit inlet surface, and the outer spiral wall from 0 to –3π / 2 of the spiral shell, that is, the positive direction. The horizontal projection line in the range of π / 2 to 2π, three horizontal projection lines are connected to form a contour line in the shape of a figure 5, and the figure 5 line is used as the thickness reference line. The figure 5 line is viewed from the front of the figure 5, the left direction of the figure 5 line is the front direction of the spiral unit, and the right direction of the figure 5 line is the rear direction of the spiral unit. The thickness of the left and right directions of the thickness reference line are taken separately or the thickness of the two directions is taken together; the thickness of the thickness reference line is taken in the left direction, and the partition is in the horizontal projection line of the outer contour of the spiral cover or spiral bottom. The axial thickness L of the horizontal projection line of the outer spiral wall in the range of 0 to –3π / 2 隔 , L 隔 ≤P' 2π –P’ 4π The forward thickness of the partition in the horizontal projection line of the outer contour of the spiral cover or spiral bottom is equal to L 隔 , the forward thickness surface can be extended to the outer spiral wall, and the thickness reference line forms a surface along the height; the thickness reference line is taken to the right, and the partition is the anti-axial thickness L' of the horizontal projection line of the outer spiral wall 0 to –3π / 2 in the horizontal projection line of the outer contour of the spiral cover or spiral bottom 隔 , L' 隔 ≤P' 2π –P’ 4π The thickness of the partition in the horizontal projection line of the outer contour of the spiral cover or spiral bottom is equal to L' 隔 , the posterior thickness surface can be extended to the outer spiral wall side of the outer end convex arc wall, the thickness reference line is taken from the right side, the upper partition can be extended downward to the bottom surface of the spiral cover, and the lower partition can be extended upward to the top surface of the spiral bottom; the thickness reference line is combined in two directions to take the thickness in each direction separately, and the combined thickness is taken, then the combined thickness can be taken less than or equal to 2(P' 2π –P’ 4π); the length of the partition from 0 to –π / 2 is the same as the horizontal projection line of the outer contour of the spiral cover or spiral bottom from 0 to –π / 2, the length of the partition from –π / 2 to –3π / 2 is the same as the horizontal projection line of the outer contour of the spiral cover or spiral bottom from –π / 2 to –3π / 2, which can be intercepted according to the shape of the fixed frame of the ventilation duct. The 5-shaped upper partition and the 5-shaped lower partition of the same spiral unit are projections of each other; the L-shaped partition is composed of a vertical plate and a horizontal plate The vertical section is a right-angle L-shaped, also known as an angle partition. The horizontal projection line of the vertical plate of the angle partition includes a convex arc, a concave arc, and a straight line tangent to the horizontal projection line of the outer contour of the spiral cover or spiral bottom in the interval π / 2 to 7π / 4, that is, the horizontal projection line of the outer spiral wall in the interval π / 2 to 7π / 4. The length of the positive rotation line from the projection line tangent point is at least to the anti-rotation tangent line of the outer end point of the horizontal projection line of the inner spiral wall. The positive rotation line of the convex arc, concave arc or straight line to the horizontal projection line of the spiral unit inlet surface The gap of the projection line is filled by the horizontal plate of the angle partition. The convex arc line, concave arc line or straight line tangent to the lower curve of the 5-shaped line is the horizontal projection line of the vertical plate of the angle partition. The horizontal projection line of the vertical plate of the angle partition intersects with the upper horizontal line of the 5-shaped line or the extension line of the horizontal line. The right notch of the 5-shaped line is filled by the horizontal plate of the angle partition. The horizontal plate of the angle partition is connected with the spiral cover or spiral bottom with equal thickness. The horizontal plate of the partition on the angle cover (1 012) bottom surface is coplanar with the bottom surface of the spiral cover, the top surface of the horizontal plate (1022) of the angled bottom partition is coplanar with the top surface of the spiral bottom, the vertical plate of the angled partition can be extended in the anti-rotation direction from the projection line tangent point, and the horizontal plate of the angled partition is extended along the shape of the vertical plate and fills the gap between the anti-rotation projection line of the vertical plate and the corresponding anti-rotation outer spiral wall horizontal projection line. The thickness of the vertical plate of the angled partition is its horizontal projection line as the thickness reference line, and the vertical plate of the angled partition takes a thickness L on one side of the thickness reference line. 隔 , L 隔 ≤P' 2π –P’ 4π , take the thickness L' on the other side 隔 , L' 隔 ≤P' 2π –P’ 4π , the combined thickness of both sides can be less than or equal to 2(P' 2π –P’ 4π ), the vertical plate height of the angle partition h ≥ π 1 / 2 P φ The total height of the angle partition is the height of the vertical plate plus the thickness of the horizontal plate. The angle partition is divided into a convex arc angle partition, a concave arc angle partition and a straight angle partition according to the shape of the horizontal projection line of its vertical plate. The horizontal projections of the angle cover upper partition and the angle bottom partition of the same spiral unit coincide. The groove partition is a vertical plate (1021) of an angle bottom partition connected to a vertical plate (1011) of an angle cover upper partition of the same size. The longitudinal section of the groove partition is a groove shape. The height of the vertical plate (103) of the groove partition is 2h.

[0036] The device also includes a plurality of spiral units, each of which is provided with a cover baffle and a bottom baffle, and the plurality of spiral units are arranged in parallel, and the plurality of spiral units in parallel include a plurality of spiral units of the same size and rotation direction in parallel; the function of the plurality of spiral units in parallel is to connect the inlets of the plurality of spiral units in parallel and the outlets in parallel, and to set baffles of uniform shape between the outsides of the plurality of spiral units so that the incoming airflow and the outgoing airflow are evenly distributed inside the plurality of spiral units; the parallel connection of the plurality of spiral units includes: horizontally adjacent spiral units of the same size and rotation direction are connected in parallel at an equal angle equal to π in a straight line, referred to as a straight line parallel connection, and horizontally adjacent spiral units of the same size and rotation direction are connected in parallel in a straight line, referred to as a straight line parallel connection. The coil units are connected in parallel at equal angles in the range of greater than π and less than or equal to 3π / 2 to form a convex arc, referred to as convex arc parallel connection; the horizontally adjacent spiral coil units of the same size and the same rotation direction are connected in parallel at equal angles in the range of greater than or equal to π / 2 and less than π to form a concave arc, referred to as concave arc parallel connection; multiple straight coil units are connected in parallel and then stacked on the vertical surface to form a flat surface, referred to as flat surface multi-layer parallel connection; multiple convex arcs with the same radius are connected in parallel and then stacked on the same arc axis to form a convex arc surface, referred to as convex arc surface multi-layer parallel connection; multiple concave arcs with the same radius are connected in parallel and then stacked on the same arc axis to form a concave arc surface, referred to as concave arc surface multi-layer parallel connection; the horizontally adjacent spiral coil units of the same size and the same rotation direction are connected in parallel at equal angles in the range of greater than π and less than or equal to π 3π / 2 interval parallel connection into a circle referred to as inner air inlet circular parallel connection, multiple inner air inlet circular parallel connection with the same radius and then stacked in parallel with the same axis to form a cylinder referred to as inner air inlet cylinder multilayer parallel connection, horizontally adjacent spiral units of the same size and rotation direction are horizontally connected at equal angles in the interval greater than or equal to π / 2 and less than π to form a circle referred to as outer air inlet circular parallel connection, multiple outer air inlet circular parallel connection with the same radius and then stacked in parallel with the same axis to form a cylinder referred to as outer air inlet cylinder multilayer parallel connection, vertically adjacent spiral units of the same size and rotation direction are vertically connected in parallel as projections in a row referred to as in-line parallel connection, multiple in-line parallel connection and then parallel connection in parallel horizontally adjacent at equal angles equal to π to form a flat surface referred to as flat surface multilayer parallel connection Multiple columns in parallel, multiple columns in parallel and then parallel horizontally adjacent to form equal angles in the range greater than π and less than or equal to 3π / 2, connected in parallel to form a convex arc surface, referred to as convex arc surface multiple columns in parallel, multiple columns in parallel and then parallel horizontally adjacent to form equal angles in the range greater than or equal to π / 2 and less than π, connected in parallel to form a concave arc surface, referred to as concave arc surface multiple columns in parallel, multiple equal-height columns in parallel and then parallel horizontally adjacent to form equal angles in the range greater than π and less than or equal to 3π / 2, connected in parallel to form a cylinder, referred to as inner air intake cylinder multiple columns in parallel, multiple equal-height columns in parallel and then parallel horizontally adjacent to form equal angles in the range greater than or equal to π / 2 and less than π, connected in parallel to form a cylinder, referred to as outer air intake cylinder multiple columns in parallel.

[0037] A plurality of spiral units of the same size and the same rotation direction are arranged in parallel at equal angles horizontally, wherein the plane where the axial section (1303) of the spiral shell of one of the two adjacent spiral units lies between π / 2 and 3π / 2 is coplanar with the entrance plane of the adjacent spiral unit, and the coplanar plane forms an angle λ (1302) with its own entrance plane, wherein the angle λ is the equal angle formed by the horizontal parallel connection of the adjacent spiral units, π / 2≤λ≤3π / 2, and the spiral core axes of the two adjacent spiral units are on the coplanar plane S. The connection modes of the two adjacent spiral units include tangency, intersection, and separation of the outer spiral walls of the two adjacent spiral shells on the coplanar plane S, wherein tangency is caused by the outer spiral walls of the two spiral shells having the same inclination angle and the tangent planes coinciding (such as the attached Fig.18 ); intersection is the fusion of two spiral shells by the intersection surface to a certain thickness (such as attached Fig.15 ), the intersecting thickness includes less than or equal to the thickness of the thinner single-arm vortex body on the axial coplane S, that is, the thickness position is at most to the point where the outer spiral wall of the thicker single-arm vortex body is tangent to the inner spiral wall of the thinner single-arm vortex body, and the intersecting thickness also includes greater than the thickness of the thinner single-arm vortex body on the axial coplane S but less than or equal to the thickness of the thicker single-arm vortex body on the axial coplane S. At this time, the thicker single-arm vortex body invades the internal space of the thinner single-arm vortex body, and the occupied part must be cut off along the occupied inner spiral wall surface; the two spiral shells are separated by a certain distance (such as the attached Fig.16 ), the outer spiral walls of the two spiral shells and the two intersection positions of the coplanar S are connected by a spacing plate (1504) passing through the coplanar S or a spacing arc plate with the plane between the two intersections as the chord plane, the thickness of the spacing plate or the spacing arc plate is the same as the thickness of the upper partition plate or the thickness of the lower partition plate, and the height of the spacing plate or the spacing arc plate is the sum of the height of the spiral unit, the height of the upper partition plate, and the height of the lower partition plate; each horizontal angle parallel connection form of multiple spiral units adopts the same horizontal adjacent connection method, and can also be divided into tangent parallel, intersecting parallel, and spaced parallel according to the connection method of horizontally adjacent spiral units;

[0038] The horizontal parallel connection of adjacent spiral units at equal angles λ=π is straight parallel connection, π<λ≤3π / 2 is convex arc parallel connection, and π / 2≤λ<π is concave arc parallel connection; the horizontal parallel connection of adjacent spiral units at equal angles π<λ≤3π / 2 is inner air circular parallel connection, which can be regarded as an extension of convex arc parallel connection; the horizontal parallel connection of adjacent spiral units at equal angles π / 2≤λ<π is outer air circular parallel connection, which can be regarded as an extension of concave arc parallel connection; The straight parallel connection, convex arc parallel connection, concave arc parallel connection, inner air inlet circular parallel connection and outer air inlet circular parallel connection are all single-layer parallel connection. The single-layer parallel connection is provided with a cover baffle of uniform shape and a bottom baffle of uniform shape. The horizontal projections of the cover baffle and the bottom baffle of the spiral unit coincide. The cover baffle of uniform shape and the bottom baffle of uniform shape include a 5-shaped cover baffle and a 5-shaped bottom baffle, an angle-shaped cover baffle and an angle-shaped bottom baffle. Adjacent 5-shaped cover baffles or 5-shaped bottom baffles are tangent, intersecting or intersecting with their spiral units. The thickness reference line length of the 5-shaped partitions connected in a spaced manner, tangent or intersecting manner is intercepted at the connection, and the thickness reference line length of the 5-shaped partitions connected in a spaced manner is intercepted at the connection of the spacer flat plate or the spacer arc plate; the straight parallel connection adopts a straight angle partition, the vertical plate of the straight angle partition is parallel to the coplanar S, and the adjacent vertical plates are connected to form a plane; the convex arc parallel connection and the inner air intake circular parallel connection adopt a convex arc angle partition, the horizontal projection convex arc of the vertical plate of the convex arc angle partition is concentric with the convex arc or circle of the parallel body, and the adjacent vertical plates are connected Convex arc surface; concave arc parallel and external air inlet circular parallel use concave arc angle partition, the horizontal projection concave arc of the vertical plate of the concave arc angle partition is concentric with the concave arc or circle of the parallel body, and adjacent vertical plates are connected to form a concave arc surface; the single-layer parallel is fixed in the ventilation duct by a fixed frame, the upper frame of the fixed frame is connected to the upper side of the upper partition body of the single-layer parallel, the lower frame of the fixed frame is connected to the lower side of the bottom partition body of the single-layer parallel, and the frames on both sides of the fixed frame follow the shape of the two sides of the single-layer parallel body, and the circular parallel body has no fixed frames on both sides;

[0039] Flat surface multilayer parallel connection, convex arc surface multilayer parallel connection, concave arc surface multilayer parallel connection, inner air intake cylindrical multilayer parallel connection, outer air intake cylindrical multilayer parallel connection are all multilayer parallel connection. Multilayer parallel connection is to stack multiple single-layer parallel connection of the same shape vertical surfaces. Flat surface multilayer parallel connection is to stack the same vertical planes in straight parallel connection. Convex arc surface multilayer parallel connection is to stack the same convex arc surface in convex arc parallel connection. Concave arc surface multilayer parallel connection is to stack the same concave arc surface in concave arc parallel connection. Inner air intake cylindrical multilayer parallel connection is to stack the same cylindrical surface in inner air intake circle connection. The stacked arrangement is a cylindrical multi-layer parallel arrangement with external air inlet, and the same cylindrical surface is stacked. The horizontal mutual projection of the spiral units of two adjacent layers includes overlap and misalignment. The number of spiral units in each layer includes equal and difference. The upper and lower partitions of the upper and lower adjacent spiral units of the two adjacent layers whose mutual projection overlap are connected as a whole. The angled upper partition and the angled lower partition are connected to form a groove partition. The spacing between the two adjacent layers (131) is the sum of the height of the upper partition and the lower partition, that is, 2h, 2h ≥ 2π 1 / 2 P φ , wherein the height of the interval plates or interval arc plates connected in the same layer in an interval manner is extended and interconnected; the upper partition plates and the lower partition plates of the two adjacent spiral units of the two adjacent layers that are horizontally offset from each other are offset and there is a gap, and an interlayer frame (2001) needs to be set to fill the offset gap. The interlayer frame is placed between the offset upper partition plates and the lower partition plates and connected to the two partition plates. The thickness of the interlayer frame is greater than or equal to the maximum width of the axial section of the offset gap and the sum of the thickness of the upper partition plates and the lower partition plates here. The length of the interlayer frame is at least equal to the parallel length of the offset part. The spacing between the two adjacent layers of spiral units is the sum of the heights of the upper partition plates and the lower partition plates plus the height of the interlayer frame. The interlayer frame is a straight body with full thickness and height. The interlayer frame fills the offset gap and also includes filling the same layer with The connection in a spaced manner produces dislocation gaps; the multi-layer parallel is fixed in the ventilation duct by a fixed frame, the upper frame of the fixed frame is connected to the upper edge of the uppermost cover partition body of the multi-layer parallel, the lower frame of the fixed frame is connected to the lower edge of the lowermost bottom partition body of the multi-layer parallel, the frames on both sides of the fixed frame follow the shape of the two sides of the multi-layer parallel body, the cylindrical parallel body has no fixed frames on both sides, the multi-layer parallel body with equal lengths of flat surface multi-layer parallel, concave arc surface multi-layer parallel, and convex arc surface multi-layer parallel, and the multi-layer parallel body with equal number of spiral units of each layer and overlapping projections of two adjacent layers connected to the fixed frame has regular and neat exposed edges, while the regularity of the exposed edges of the multi-layer parallel body with difference in length of each layer or difference in number of spiral units of each layer or misaligned projections of two adjacent layers connected to the fixed frame is reduced;

[0040] The outer air inlet circular parallel, the inner air inlet circular parallel, the outer air inlet cylindrical multi-layer parallel, and the inner air inlet cylindrical multi-layer parallel can be provided with a cover on the upper part of the parallel body or a bottom on the lower part of the parallel body to control the flow direction. The outer air inlet circular parallel without bottom and cover and the outer air inlet cylindrical multi-layer parallel without bottom and cover have airflow flowing out from the upper and lower sides at the same time, the inner air inlet circular parallel without bottom and cover and the inner air inlet cylindrical multi-layer parallel without bottom and cover have airflow flowing in from the upper and lower sides at the same time, and the outer air inlet circular parallel without bottom and cover The outer air inlet cylindrical multi-layer parallel connection with a bottom and a cover has air flowing out from the bottom, the inner air inlet circular parallel connection with a bottom and a cover has air flowing in from the bottom, the outer air inlet circular parallel connection with a bottom and no cover has air flowing out from the top, the inner air inlet circular parallel connection with a bottom and no cover has air flowing in from the top, and the inner air inlet cylindrical multi-layer parallel connection with a bottom and no cover has air flowing in from the top. The top without a cover or the bottom without a bottom can be connected to a fixed frame.

[0041] A plurality of vertically adjacent spiral units of the same size and the same rotation direction are vertically projected and connected in parallel to form a series, which is referred to as series parallel connection. The series parallel spiral units are provided with a cover partition of a uniform shape and a bottom partition of a uniform shape. The horizontal projections of the cover partition and the bottom partition of the spiral unit coincide with each other. Each series parallel spiral unit includes a 5-shaped cover partition and a 5-shaped bottom partition, an angle-shaped cover partition and an angle-shaped bottom partition. The height of the 5-shaped partition and the height of the vertical plate of the angle-shaped partition are both h, and h≥π 1 / 2 P φ , the height of the vertical plate of the groove partition is 2h, 2h ≥ 2π 1 / 2 P φ , the upper partition and the bottom partition of two adjacent spiral units in parallel are connected as one, wherein the angle upper partition and the angle bottom partition are connected as one as a groove partition, and the spacing between two adjacent spiral units is 2h, 2h≥2π 1 / 2 P φ; The angular partitions are arranged in parallel along the anti-rotational wall section of the outer edge of the inner wall of the spiral shell to the inter-row frame (1701) of the angular partition vertical plate surface. The inter-row frame is a vertical plate shape that passes the height of the column. The thickness of the inter-row frame is taken from the anti-rotational wall section of the outer edge of the inner wall to the anti-rotational wall section of the outer edge of the outer wall. Since the anti-rotational wall section of the outer edge of the outer wall is parallel to the anti-rotational wall section of the outer edge of the inner wall, the thickness of the inter-row frame is less than or equal to the distance between the two anti-rotational wall sections. The angular partition is connected to the inter-row frame. The positive rotation length of the angular partition is the length after being connected to the inter-row frame. The inlet surfaces of the spiral units connected in parallel are coplanar. The spiral units connected in parallel are The axial sections of the spiral units are coplanar. Multiple rows with the same rotation direction are connected in parallel and then arranged in parallel horizontally at equal angles. One row in parallel is a row. The axial sections between π / 2 and 3π / 2 of the spiral units in one of any two adjacent rows are coplanar with the entrance surface of the spiral units in the other row. The coplanar S forms an angle λ with its own entrance surface. λ is the equal angle of multiple rows in parallel, π / 2≤λ≤3π / 2. The spiral core axes of the two adjacent rows are on this coplanar S. The connection methods of the two adjacent rows include tangency, intersection, and separation of the horizontal projections of the spiral shells of the two adjacent rows on the coplanar S. Tangency is caused by the horizontal projections of the outer spiral walls of the spiral shells of the two rows having the same inclination angle and the overlap of the tangent planes (such as the attached Fig.21 The intersection is the horizontal projection of two rows of spiral shells fused by the intersection surface to a certain thickness (such as the attached Fig.15 ), the intersecting thickness includes less than or equal to the thickness of the thinner single-arm vortex body on the axial coplane S, that is, the thickness position is at most to the point where the outer spiral wall of the thicker single-arm vortex body is tangent to the inner spiral wall of the thinner single-arm vortex body, and the intersecting thickness also includes greater than the thickness of the thinner single-arm vortex body on the axial coplane S but less than or equal to the thickness of the thicker single-arm vortex body on the axial coplane S. At this time, the thicker single-arm vortex body invades the internal space of the thinner single-arm vortex body, and the occupied part must be cut off along the occupied inner spiral wall surface; the two rows of spiral shells are separated by a certain distance (such as the attached Fig.16 ), the outer spiral walls of the two rows of spiral shells are connected at the two intersection positions of the coplanar plane S by a spacing plate passing through the coplanar plane S or a spacing arc plate with the plane between the two intersection lines as the chord plane, the thickness of the spacing plate or spacing arc plate is the same as the thickness of the cover partition, and the height of the spacing plate or spacing arc plate is the sum of the height of the spiral unit, the height of the cover partition, and the height of the bottom partition; each multi-row parallel form adopts the same adjacent connection method, and can also be divided into tangent multi-row parallel, intersecting multi-row parallel, and separated multi-row parallel according to the column adjacent connection method;

[0042] In-line parallel connection is single-row parallel connection, multiple-row parallel connection with equal angle λ=π is flat surface multiple-row parallel connection, π<λ≤3π / 2 is convex arc surface multiple-row parallel connection, π / 2≤λ<π is concave arc surface multiple-row parallel connection; multiple equal-height in-line parallel connection and then parallel connection horizontally with equal angle π<λ≤3π / 2 to form a cylinder is referred to as inner air intake cylinder multiple-row parallel connection, and inner air intake cylinder multiple-row parallel connection can be regarded as an extension of equal-height convex arc surface multiple-row parallel connection; multiple equal-height in-line parallel connection and then parallel connection horizontally with equal angle π / 2≤λ<π to form a cylinder is referred to as outer air intake cylinder multiple-row parallel connection, and outer air intake cylinder multiple-row parallel connection can be regarded as an extension of equal-height concave arc surface multiple-row parallel connection;

[0043] Multiple parallel columns of flat surfaces, multiple parallel columns of convex curved surfaces, multiple parallel columns of concave curved surfaces, multiple parallel columns of inner air inlet cylinders, and multiple parallel columns of outer air inlet cylinders are all multiple parallel columns. The lengths of the multiple parallel columns include being equal or having a difference, the number of spiral units in each column includes being equal or having a difference, the vertical surfaces of the spiral units of two adjacent columns are projected to each other including being overlapped or misaligned, and the inter-column frame plays a role in bridging the vertical misaligned gaps between columns when the vertical surfaces of the spiral units of adjacent columns are projected to each other misaligned, which is the same as the role of the inter-layer frame of the multi-layer parallel connection in bridging the horizontal misaligned gaps between layers; the multiple parallel columns are fixed in the ventilation duct by a fixed frame, and the fixed frame The upper frame of the frame is connected to the upper side of the uppermost cover partition body connected in parallel with each column, the lower frame of the fixed frame is connected to the lower side of the lowermost bottom partition body connected in parallel with each column, the frames on both sides of the fixed frame follow the shape of the two sides of the multi-column parallel body, the cylindrical parallel body has no fixed frames on both sides, the exposed edges of the multi-column parallel body with equal lengths of each column and equal number of spiral units of each column and overlapped projections of two adjacent columns connected to the fixed frame are regular and neat, while the exposed edges of the multi-column parallel body with differences in lengths of each column or differences in number of spiral units of each column or misaligned projections of spiral units of two adjacent columns connected to the fixed frame are less regular;

[0044] The outer air inlet cylindrical multiple rows in parallel and the inner air inlet cylindrical multiple rows in parallel can be provided with a cover on the top of the parallel body or a bottom on the bottom of the parallel body to control the flow direction. The outer air inlet cylindrical multiple rows in parallel without bottom and cover have airflow flowing out from the top and bottom at the same time, the inner air inlet cylindrical multiple rows in parallel without bottom and cover have airflow flowing in from the top and bottom at the same time, the outer air inlet cylindrical multiple rows in parallel without bottom and cover have airflow flowing out from the bottom, the inner air inlet cylindrical multiple rows in parallel without bottom and cover have airflow flowing in from the bottom, the outer air inlet cylindrical multiple rows in parallel with bottom and no cover have airflow flowing out from the top, and the inner air inlet cylindrical multiple rows in parallel with bottom and no cover have airflow flowing in from the top. The top without cover or the bottom without bottom can be connected to a fixed frame.

[0045] The horizontal projection curves of the inner spiral wall and the outer spiral wall of the single-arm vortex body also include two similar logarithmic spiral arcs. The logarithmic spiral arc is obtained by dividing the total polar angle φ of the logarithmic spiral with an inclination angle of A into M' parts, M'≥2, the equally divided polar angle is σ, φ=M'σ, and the arcs corresponding to the equally divided polar angles and the two points on the logarithmic spiral with the arc equilateral circular angle of the equally divided polar angle as the center angle are equiangular circular arcs, and the center angles of the equally divided polar angle and the equiangular circular arc are mutually the same arc circular angles. The curve formed by sequentially connecting adjacent equiangular circular arcs on the logarithmic spiral arc is the logarithmic spiral arc, and the adjacent equiangular circular arcs on the logarithmic spiral arc have a common tangent and a common normal at the connection point, and the centers of the two arcs are on the common normal line. The radii of adjacent equiangular circular arcs of the logarithmic spiral arc change in a fixed ratio along the direction of contraction and rotation, and the fixed ratio is e –tan(A) The power of the equally divided polar angle is e –σtan(A) , the contraction ratio of the polar angle divided equally into M' parts is e –M’σtan(A) , e –M’σtan(A) =e –φtan(A) ; The airflow streamline is in the shape of a logarithmic spiral arc. The streamline motion of the airflow along the logarithmic spiral arc is a variable diameter circular motion with a curvature radius that changes in a period of equal polar angle σ. The droplets carried by the airflow can be separated from the streamline when the curvature radius of the streamline shrinks to the curvature radius of the droplet centripetal force balance. After separation, the airflow continues to move along the streamline while the droplets move in a circular motion with a balanced curvature radius against the wall. The included angle of the logarithmic spiral arc between the inner spiral wall and the outer spiral wall of the single-arm vortex is α, α≥σ, and the similarity ratio of the logarithmic spiral where the logarithmic spiral arc of the inner spiral wall and the outer spiral wall is e –αtan(A) ; The two sides of the n+1th equally divided polar angle σ are the polar diameter p n and p n+1 , p n+1 =p n e –σtan(A) , n is the number of polar diameters that divide the polar angle equally, n is a natural number, and the outer end of the logarithmic spiral arc is the 0th polar diameter p 0 , the inner end of the logarithmic spiral arc is the nth pole diameter p n , p 0 and p n is the polar diameter on both sides of the total polar angle of the logarithmic spiral arc, p n =p 0 e –φtan(A) , the polar diameter of any adjacent equally divided polar angle is p n and p n+1 or p n–1 and p n , the same arc equilateral circular angle that divides the polar angle σ equally is taken as the central angle, which is still equal to σ. The radius of curvature of the n+1th equiangular circular arc corresponding to the central angle is R n+1 , because 0<e –σtan(A) <1, R n+1 Divide the polar angle equally with its polar diameter p n The triangular relationship is R n+1 =[(p n –e–σtan(A) p n cosσ) 2 +(e –σtan(A) p n sinσ) 2 ] 1 / 2 / [2sin(σ / 2)] = p n [(1–e –σtan(A) cosσ) 2 +(e –σtan(A) sinσ) 2 ] 1 / 2 / [2sin(σ / 2)], the radius of curvature of the equiangular circular arc that shrinks along the equiangular spiral arc is R n+2 =e –σtan(A) R n+1 . The curvature of at least one equiangular circular arc on the logarithmic spiral arc of the spiral wall in the acceleration separation zone is greater than 1 / cos(A) of the centripetal force equilibrium curvature of the droplets. The logarithmic spiral is similar to the logarithmic spiral arc in shape. The curvature of the logarithmic spiral changes from time to time. Its demisting and dehumidification effect is uniform and reliable, but it requires high processing precision and is difficult to process. The curvature of the logarithmic spiral arc changes periodically with equally divided polar angles. The smaller the change period, the closer the effect is to the logarithmic spiral, but the processing difficulty increases. The larger the change period, the worse the effect is, but the easier it is to process. The difference between the logarithmic spiral arc and the logarithmic spiral is shown in the attached figure. Fig.28 .

[0046] In the case of large demisting particle size or low requirements for demisting and dehumidification effects, the single-arm vortex body can also be made into a uniform wall thickness. A single-arm vortex body with uniform wall thickness means that the horizontal projection curve of the inner spiral wall adopts a logarithmic spiral or a logarithmic spiral arc, and the horizontal projection curve of the outer spiral wall is a curve formed by the inner spiral wall plus a fixed thickness, or the horizontal projection curve of the outer spiral wall adopts a logarithmic spiral or a logarithmic spiral arc, and the horizontal projection curve of the inner spiral wall is a curve formed by the outer spiral wall minus a fixed thickness. The two curves are equidistant on the same plane. The smaller the equidistant, the better the demisting effect. Materials with good toughness can be made into extremely thin single-arm vortex bodies, such as stainless steel materials with a thickness of less than 0.1 mm. The smaller the equidistant, the closer the projection lines of the two walls are to a logarithmic spiral. The logarithmic spiral P of the inner spiral wall θ =P 0 e –θtan(A) , the outer screw wall equidistant curve P' θ =P 0 e –θtan(A) +k, k is uniform wall thickness or equidistant, k≤10%P 0 , P' θ =P 0 (e –θtan(A) +10%), P 0 –P’ 2π ≥P φ , 1–(e –2πtan(A)+10%)≥e –φtan(A) , the minimum value of the inclination angle A and the total polar angle φ conform to the geometric relationship 0.9 ≥ e –2πtan(A) +e –φtan(A) ; or the external spiral wall logarithmic spiral P' θ =P' 0 e –θtan(A) , inner screw wall equidistant curve P θ =P' 0 e –θtan(A) –k,P 0 =P' 0 –k, k is uniform wall thickness or equidistant, k≤10%P 0 , 10%P 0 =10%(P' 0 –k), k≤9.1%P' 0 , P θ =P' 0 (e –θtan(A) –9.1%), P 0 –P’ 2π ≥P φ , 90.9%P' 0 –P’ 0 e –2πtan(A) ≥P' 0 (e –φtan(A) –9.1%), the minimum value of the inclination angle A and the total polar angle φ conform to the geometric relationship 1≥e –2πtan(A) +e –φtan(A) .

[0047] The device with multiple spiral units connected in parallel is placed in a ventilation duct, and an incoming mist-containing airflow passes through the device. The flow is distributed to each spiral unit by the air pressure distribution on the windward side of the device. The airflow is inclined to enter the vortex zone through the inlet of the spiral unit. The airflow is constrained by the shape of the vortex zone to form a coaxial vortex flow field. The airflow accelerates and vortices around the spiral core axis in the acceleration separation zone according to the inclination angle of the inner spiral wall. The airflow streamlines rotate around the spiral core axis. The airflow streamlines are similar logarithmic spiral shapes. The logarithmic spiral streamline cluster forms a vortex flow field in the acceleration separation zone. The curvature of the logarithmic spiral streamline increases along the flow direction, and the airflow pressure decreases as the streamline curvature increases. The same curvature points on the logarithmic spiral streamline cluster form a vortex in the acceleration separation zone. The arc-shaped isobaric surface of the swirl field, the curvature of the arc-shaped isobaric surface is cos(A) times the curvature of the logarithmic spiral streamline on the arc-shaped isobaric surface, the pressure gradient is distributed along the arc-shaped isobaric surface, the curvature of the arc-shaped isobaric surface increases along the streamline direction as the tangential flow section of the acceleration separation zone decreases, the pressure decreases as the curvature of the isobaric surface increases, the pressure gradient force does work to increase the kinetic energy of the airflow, the velocity of the airflow particle increases along the logarithmic spiral streamline direction, the curvature of the arc-shaped isobaric surface increases as the curvature of the logarithmic spiral streamline increases, the curvature of the isobaric surface increases and the pressure decreases, the flow velocity of the airflow particle increases and the centripetal force increases, the arc-shaped isobaric surface that is balanced with the centripetal force of the droplets includes the arc-shaped isobaric surface that is perpendicular to the centripetal force of the droplets and its The off-site isobaric surface with a curvature equal to the centripetal force balance curvature of the droplet and the off-site isobaric surface which is inclined with the centripetal force of the droplet and has a curvature equal to cos(A) times the centripetal force balance curvature of the droplet. The pressure of the off-site isobaric surface is greater than the pressure of the off-site isobaric surface. The droplet first passes through the off-site isobaric surface with a tilt, and its centripetal force balance curvature is the same as the curvature of the airflow streamline, and the centripetal force is balanced. After the centripetal force is balanced, the droplet separates from the airflow streamline. After separation, the droplet enters the off-site isobaric surface and moves in a circle along the off-site isobaric surface until it hits the inner spiral wall and leaves the flow field. The movement state of droplets of different radii when they continuously pass through the off-site isobaric surface with a tilt balance with its centripetal force and the off-site isobaric surface with a vertical balance with its centripetal force The state is changed from vortex motion with an inclination angle to circular motion without an inclination angle, and the motion is separated from the flow field to realize gas-liquid separation. In the process, the pressure is reduced and the temperature is lowered, so that the water vapor condenses into the droplets and the humidity is reduced. After the water vapor condenses, it is removed with the droplets. The airflow after demisting and dehumidification continues to vortex along the vortex area, and is discharged from the cover screw eye and the bottom screw eye after rotating in the deceleration vortex area and the screw eye area. The airflow discharged from each spiral unit is collected in the ventilation duct and flows in the direction of destination. The droplets adhere to the inner spiral wall to form a liquid film. The liquid film flows down along the wall under the action of gravity and gathers on the bottom of the spiral. The liquid film on the bottom of the spiral is pushed by the airflow to the bottom screw eye to discharge the spiral unit. The liquid discharged from each spiral unit flows down along the wall of the parallel body.

[0048] The parallel connection of multiple spiral units makes the airflow direction and the airflow direction of each spiral unit parallel. The common droplet radius range is relatively large, ranging from micrometer level to millimeter level. The size of the spiral unit is determined by the minimum radius of the droplets to be removed. The length of the acceleration separation zone of the spiral unit is limited, and the radius range of the droplets suitable for direct separation is limited. The spiral unit is more suitable for directly removing droplets with a concentrated radius range. The droplets with a centripetal force balance curvature radius greater than the curvature radius of the outer end of the spiral wall in the spiral unit move to the vicinity of the spiral unit entrance and directly touch the wall without penetrating into the spiral unit. The smaller the radius of the droplets, the smaller the spiral unit is suitable for. The parallel connection of multiple spiral units can not only ensure the demisting and dehumidification quality but also multiply the flow rate. The structural size of the spiral unit is set according to the minimum radius of the droplets to be removed. The flow rate of the airflow to be removed is evenly distributed with the sum of the two spiral eye areas of a single spiral unit as the flow area. The total number of spiral units in parallel multiplied by the two spiral eye areas of a single spiral unit is the total flow area of ​​the device, and the total flow area is equivalent to the flow area of ​​the airflow to be removed.

[0049] The spiral unit includes an integrally formed, integrally welded and detachable structure. The detachable structures of the spiral unit include three types: the first type: the spiral shell, the spiral bottom and the spiral cover are each an independently formed structure and can be plugged, riveted, buckled or crimped with each other; the second type: the spiral cover and the spiral shell are integrally formed and can be plugged, riveted, buckled or crimped with the spiral bottom; the third type: the spiral bottom and the spiral shell are integrally formed and can be plugged, riveted, buckled or crimped with the spiral cover; if the spiral unit is integrally formed, the upper partition and the lower partition can be integrally formed with the spiral unit; if the spiral unit is detachable, the upper partition and the lower partition can be connected to the corresponding detachable structure of the spiral unit. The parallel body of multiple spiral units includes an integrally formed, integrally welded and detachable structure. The detachable structure of the parallel body of multiple spiral units includes that the spiral cover and the spiral shell connection position of each layer can be detached while other structures are integrally formed or integrally welded, and the spiral bottom and the spiral shell connection position of each layer can be detached while other structures are integrally formed or integrally welded. The connection methods of the detachable parts include plug-in, riveting, buckling and crimping. After the spiral unit or the parallel body of multiple spiral units is detached according to the detachable structure, the eddy current area or the parallel eddy current area is exposed, the internal scale of the eddy current area or the parallel eddy current area can be cleaned, and the eddy current area or the parallel eddy current area can be reassembled after cleaning.

[0050] The present invention has the following beneficial effects:

[0051] (1) Reasonable structure makes the structure compact, easy to use, and low in manufacturing and operating costs;

[0052] (2) It can accurately remove droplets of corresponding size in the airflow according to the structural size, while reducing the humidity of the airflow;

[0053] (3) Affected by the curvature of the movement of droplets, the spiral unit suitable for removing tiny droplets is small in size and has limited flow rate. The array-type parallel connection of multiple spiral units not only expands the flow rate but also maintains the removal quality of the small-volume spiral unit, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The drawings of the present invention are provided for illustrative purposes only, and the proportions and quantities of the components in the drawings may not necessarily be consistent with the actual products.

[0055] Figure 1 It is a specific implementation of the spiral demisting and dehumidifying device in the present invention. Example 1: Front view of a single spiral unit, with a total polar angle φ=4.5π.

[0056] Figure 2 yes Figure 1 A top view of the spiral demisting and dehumidifying device included in the figure.

[0057] Figure 3 yes Figure 1 A side view of the spiral demisting and dehumidifying device included in the figure.

[0058] Figure 4 yes Figure 1 A three-dimensional diagram of the spiral demisting and dehumidifying device included in the figure.

[0059] Figure 5 yes Figure 1 Horizontal section view of BB.

[0060] Figure 6 yes Figure 1 Vertical section view of CC.

[0061] Figure 7 yes Figure 2 Vertical section view of DD.

[0062] Figure 8 It is a schematic diagram of the geometric relationship of the horizontal projection of the spiral shell in the present invention, and the total polar angle φ=5π.

[0063] Fig. 9 It is a schematic diagram of the relationship between the rotation angles of the horizontal section of the spiral shell and the streamlines in the eddy current zone in the present invention, and the total polar angle φ=4.5π.

[0064] Fig.10 yes Fig. 9 Schematic diagram of the polar-diameter relationship corresponding to the rotation angle of the horizontal section of the spiral shell and the streamlines in the vortex zone.

[0065] Fig.11Schematic diagram of the inclination angle relationship between similar streamlines and isobars in the horizontal section of the spiral shell and the eddy zone in the present invention. In the figure, the logarithmic spiral streamlines B56 and C56 in the eddy zone are similar logarithmic spiral streamlines, and the prefix numbers B56 and C56 are used to distinguish the positions. In the figure, the inclination angle A of the outer spiral wall, the inclination angle A of the inner spiral wall, the inclination angle A of the logarithmic spiral streamline, and the angle A between the polar diameter and the radius of curvature are all equal, and the total polar angle φ=4.5π is parallel to the tangent of the similar streamlines on the tangential flow section, the isobars are concentric arcs, the tangents of the isobars are parallel, and the angle between the tangent of the logarithmic spiral streamline and the tangent of the isobars is the inclination angle A; the tangents of the streamlines at points Q" and Q' on the tangential flow section are parallel with J'J", the linear velocity directions at points Q" and Q' are parallel along the tangent direction, the center radius of curvature at points Q" and Q' is parallel along the normal direction, and the centripetal force direction is along the center radius of curvature direction. The direction of the centripetal force is at right angles to the direction of the linear velocity. The inclination angle of the wall surface of the logarithmic spiral passing through points C", J", and J' on the plane where J'J" is located on the flow section is equal to the inclination angle of the streamline at points Q" and Q', and the streamline tangents passing through points C", J", J', Q", and Q' are parallel, and the directions of the center of curvature radius of the streamline passing through points C", J", J', Q", and Q' are parallel. The droplets are separated from the logarithmic spiral streamline C56 at point Q, and the isobar (167) is the offline isobar of the droplets. The pressure at point Q" on the logarithmic spiral streamline B56 is equal to the pressure at point Q. The linear velocity directions of the two points are rotationally symmetrical, and the linear velocities are equal. The droplets carried on the logarithmic spiral streamline B56 with a radius equal to that separated at point Q are separated at point Q", and the radius of the droplet's departure isobar is cos(A) times the radius of the offline isobar. See Fig.13 (The position of point Q in this figure is equivalent to Fig.13 Q 1 At point Q and point Q', droplets of the same radius are separated along the same isobar (167). After separation, the droplets of the same radius move in a circular motion along an isobar with a radius cos(A) times that of the isobar (167) to a point T' on the inner spiral wall where the curvature of the logarithmic spiral is 1 / cos(A) or a point cos(A) times the polar diameter of point T' on the inner spiral wall, and then land on the wall. The airflow continues to move along streamline C56 to point Q', where droplets of smaller radius may be separated along the isobar (96).

[0066] Fig.12 3 is a schematic diagram comparing the rotation angles and directions of clockwise and counterclockwise rotations in the present invention, where CW is clockwise and CCW is counterclockwise.

[0067] Fig.13It is a schematic diagram of the force analysis of the horizontal motion of the droplet particles in the acceleration separation zone of the present invention. The spiral shell is partially intercepted for simplification. The force analysis adopts the parallelogram rule. The centripetal force and the tangential force are the component forces. The component forces are along the tangent and normal directions of the streamline. The tangent and normal angles are both right angles, so the parallelogram is a rectangle. The direction of the resultant force points to the point along the streamline, and the linear velocity is in the same direction as the tangential force. The droplet particles move with the airflow to point Q 1 The centripetal force and airflow resistance are balanced, and the droplet particle moves from point Q 1 The isobaric surface (67) is the off-line isobaric surface of the droplet particle, and the isobaric surface (116) is the off-field isobaric surface of the droplet particle. The droplet particle is separated from point Q 1 Q along the acceleration streamline (56) 1 The tangent direction (68) of the point curvature circle moves to point Q on the isobaric surface (116). 2 Then, make a straight line from point Q along the isobaric surface (116). 2 Pass Q 4 The circular motion until G 2 The wall is touched, and the airflow starts from point Q 1 The vortex motion continues along the streamline (56) in a logarithmic spiral trajectory, passing through point Q on the streamline (56) in sequence. 3 Click Q 5 ; Point Q in the figure 2 The polar diameter Q 2 O is equal to Q 1 I 1 , Q 1 I 1 That is R θ (165), Q 1 I 1 Equal to the centripetal force balance curvature radius R of the droplet 平衡 , Q 2 O is equal to R 平衡 , Q 1 O is the polar diameter P θ , polar diameter P θ =R θ / cos(A) =R 平衡 / cos(A),Q 2 O is the polar diameter P of the isobaric surface (116) θ–In[cos(A)] / tan(A) , P θ–In[cos(A)] / tan(A) =cos(A)P θ , P θ–In[cos(A)] / tan(A) = R θ =R 平衡 ,Depend on Fig.11 The parallel relationship of the curvature radius of similar streamlines passing through the same tangential flow section shows that the point Q 2 The curvature radius of the logarithmic spiral streamline and point Q 3 The radius of curvature Q 3 I2 Parallel, point Q 2 The center of curvature is at OI 2 On the extension line, pass point Q 2 The streamline curvature radius is equal to cos(A) R 平衡 The streamline curvature is equal to 1 / [cos(A) R 平衡 ], click G 2 It's Q 2 The rotational symmetry point of the inner screw wall G 2 The radius of curvature of the logarithmic spiral at point Q 2 The curvature radius of the logarithmic spiral streamlines is equal to that of the droplet Q 1 After the point is offline, it can touch the wall. The acceleration separation zone must be longer than point G2 in the positive direction. The curvature of the logarithmic spiral on the spiral wall in the acceleration separation zone that is longer than point G2 in the positive direction is greater than the curvature of point G2. The curvature of the logarithmic spiral at point G2 is equal to 1 / [cos(A) R 平衡 ] is equal to the centripetal equilibrium curvature of the droplet 1 / R 平衡 1 / cos(A); It should be noted here that the curvature of the logarithmic spiral changes from time to time. The logarithmic spiral is applicable to the curvature converted into a polar diameter that is smaller than the centripetal force equilibrium curvature radius of the droplet, while the curvature of the logarithmic spiral arc changes periodically. The logarithmic spiral arc is only applicable to the curvature of the equiangular circular arc or the curvature radius converted into the polar diameters on both sides of the equiangular circular arc that equally divides the polar angle, and is not applicable to the conversion of the polar diameter within the equiangular circular arc.

[0068] Fig.14 yes Fig.13 Magnified view of HH.

[0069] Fig.15 The horizontal projection diagram of the structure of the spiral units in the present invention connected horizontally in a straight parallel manner in an intersecting manner, in which the axial section (1303) of the middle spiral unit and the inlet plane where the horizontal projection line (443) of the inlet width edge line of the adjacent spiral unit on the left are located form a coplanar plane S, and the coplanar plane S and the inlet plane where the horizontal projection line of the inlet width edge line of the spiral unit itself is located include an angle λ (1302), λ=π.

[0070] Fig.16 The invention is a schematic diagram of horizontal projection of a convex arc parallel structure in which the spiral units are horizontally connected in an interval manner. In the figure, the axial section (1303) of the middle spiral unit and the inlet plane where the horizontal projection line of the inlet width edge line of the left adjacent spiral unit are located form a coplanar plane S, and the coplanar plane S and the inlet plane where the horizontal projection line (443) of the inlet width edge line of the own spiral unit are located form an angle λ (1302), π<λ≤3π / 2.

[0071] Fig.17It is a front view of a spiral demisting and dehumidifying device in which the spiral units of the 5-shaped partitions in the present invention are horizontally connected in a tangential manner and the horizontal projections of the flat plate surfaces are overlapped.

[0072] Fig.18 yes Fig.17 A top view of a spiral demisting and dehumidifying device in which the spiral units of the 5-shaped partitions are horizontally connected in a tangential manner and the horizontal projections of the flat plate surfaces of the multiple layers are overlapped.

[0073] Fig.19 yes Fig.17 A side view of a spiral demisting and dehumidifying device in which the spiral units of the 5-shaped partitions are horizontally connected in a tangential manner and the horizontal projections of the flat plate surfaces of the multiple layers are overlapped.

[0074] Fig. 20 It is a three-dimensional diagram of a spiral demisting and dehumidifying device in which the spiral units of the angled partitions of the present invention are connected in series in a tangential manner, and the convex arc surfaces of multiple rows are connected in parallel, and the vertical surfaces of the rows are projected and staggered to each other.

[0075] Fig.21 yes Fig. 20 A top view of a spiral demisting and dehumidifying device including a spiral unit of an angular partition connected in series in a tangential manner, a plurality of parallel rows of convex arc surfaces, and mutually projected and staggered vertical surfaces.

[0076] Fig. 22 It is a stereoscopic diagram of a spiral demisting and dehumidifying device in which the spiral units of the angled partitions of the present invention are connected in a tangential manner and the convex arc surfaces are multi-layered and parallel, and the horizontal projections of the layers are staggered with each other.

[0077] Fig.23 yes Fig. 22 A top view of a spiral demisting and dehumidifying device in which the spiral units of the angular partitions are connected in a tangential manner and the convex arc surfaces are multi-layered and parallel, and the horizontal projections are offset from each other.

[0078] Fig.24 It is a stereoscopic diagram of a spiral demisting and dehumidifying device in which the spiral units of the 5-shaped partitions of the present invention are connected in a tangential manner and the flat surface layers are parallel and horizontally projected and staggered to each other.

[0079] Fig.25 yes Fig.24 A top view of a spiral demisting and dehumidifying device in which the spiral units of the 5-shaped partitions are connected in a tangential manner and the flat surface layers are connected in parallel and horizontally projected and offset from each other.

[0080] Fig.26 It is a schematic diagram of horizontal projection of the structure of a single-arm vortex body built into the acceleration separation zone of the spiral unit in the present invention.

[0081] Fig. 27It is a schematic diagram of horizontal projection of the structure of a through-length single-arm vortex body built into the vortex zone of the spiral unit in the present invention.

[0082] Fig.28 It is a schematic diagram for comparing the differences between the logarithmic spiral arc and the logarithmic spiral in the present invention.

[0083] Fig.29 It is a specific implementation example 2 of the spiral demisting and dehumidifying device in the present invention: a three-dimensional diagram of multiple parallel-connected cylindrical air inlets with angled partitions having a bottom but no cover.

[0084] Fig.30 yes Fig.29 Embodiment 2 included therein is a front view of a multi-layer parallel connection of cylindrical air inlets with angled partitions having a bottom but no cover, and its side view is the same as the front view.

[0085] Fig.31 yes Fig.30 Horizontal section view of the TT.

[0086] Fig.32 yes Fig.31 Enlarged view of H'-H'.

[0087] Fig.33 yes Fig.29 Embodiment 2 included therein is a top view of a multi-layer parallel connection of cylindrical air inlets with corner partitions having a bottom but no cover.

[0088] In the figure: 1: spiral shell; 2: spiral cover; 3: spiral bottom; 4: spiral eye of cover; 5: spiral eye of bottom; 6: spiral eye circle; 7: spiral eye circle radius P φ ; 8: screw core; 9: screw eye area; 10: screw core axis; 11: inner screw wall; 12: outer screw wall; 13: outer end edge line of outer screw wall; 14: outer end edge line of inner screw wall; 15: outer end convex arc line; 16: outer end convex arc wall; 17: inner end convex arc line; 18: inner end edge line of outer screw wall; 19: inner end edge line of inner screw wall; 20: inner end convex arc wall; 21: outer end polar diameter P' of outer screw wall 0 ; 22: outer end circle of the spiral shell; 23: right direction of the left-handed spiral axis; 24: left-handed spiral axis left-handed; 25: forward direction of the left-handed spiral axis; 26: backward direction of the left-handed spiral axis; 27: left direction of the right-handed spiral axis; 28: right direction of the right-handed spiral axis; 29: forward direction of the right-handed spiral axis; 30: backward direction of the right-handed spiral axis; 31: positive rotation direction; 32: inclination angle A; 33: angle α between the logarithmic spiral of the outer spiral wall and the inner spiral wall; 34: polar angle variable θ; 35: logarithmic spiral of the inner spiral wall; 36: polar diameter P of the polar angle θ θ ; 37: inner screw wall outer end diameter P 0 ; 38: logarithmic spiral of the outer spiral wall; 39: inner end polar diameter of the outer spiral wall P' φ ; 40: chord length L' of the convex arc at the outer end 0; 41: chord length L' of the inner convex arc φ ; 42: The thickness of the two screw walls at angle θ L' θ ; 43: 2π edge of the outer spiral wall; 44: spiral unit entrance; 45: spiral unit entrance width is L 0 ; 46: outer spiral wall 2π edge line polar diameter P' 2π ; 47: outer contour line of the spiral cover or spiral bottom; 48: eddy current zone; 49: edge and round surface of the spiral eye zone; 50: acceleration and separation zone; 51: deceleration and separation zone; 52: angle 2π–α between the two spiral walls of the acceleration and separation zone, arc B”B; 53: φ–2π edge line of the inner spiral wall at the end of the acceleration and separation zone; 54: axial section width L at the end of the acceleration and separation zone φ–2π ; 55: horizontal side length of the tangential flow section, i.e. width L θ ; 56: acceleration streamline; 57: angle β between acceleration streamline and logarithmic spiral of inner spiral wall, arc GG', isobaric line GG'; 58: polar diameter P of point G on acceleration streamline β 0 ; 59: internal spiral wall logarithmic spiral β angle polar diameter P β ; 60: acceleration streamline polar angle variable θ+β, arc FF', isobar FF'; 61: acceleration streamline J point polar diameter P β θ ; 62: internal spiral wall logarithmic spiral θ + β angle polar diameter P θ+β ; 63: Point Q on the acceleration streamline 1 The center of curvature I 1 ; 64: Point Q on the logarithmic spiral of the inner spiral wall and the acceleration streamline 1 The rotational symmetry point G 1 ; 65: The curvature radius R of point Q" on the acceleration streamline B56 θ , line segment Q"I; 66: the angle A between the radius of curvature and the polar radius of the point on the acceleration streamline; 67: the point Q on the acceleration streamline 1 Isobaric surface at the location, offline isobaric surface of the droplet particle; 68: Linear velocity v on the acceleration streamline θ and direction, tangential force on the acceleration streamline; 69: point Q' on streamline C56; 70: tangent line of the outer end circle of the spiral shell; 71: Fig.13The local enlarged position HH; 72: the rotational symmetric point Z of the inner end edge line of the inner screw wall on the extension line of the inner end of the outer screw wall; 73: the rotational symmetric point Z' of the outer end edge line of the inner screw wall on the outer screw wall; 74: the rotational symmetric point Z" of the outer end edge line of the inner screw wall on the extension line of the outer end of the outer screw wall; 75: the θ corner point J on the acceleration streamline; 76: the θ corner point J' on the inner screw wall; 77: the θ corner point C" on the outer screw wall; 78: the θ+2π corner point J" on the outer screw wall; 79: the rotational symmetric point G' of the acceleration streamline point G on the inner screw wall; 80: Point K on the flow section at the end of the acceleration streamline. A logarithmic spiral streamline in the eddy zone is divided into a front section and a rear section at point K. The front section is the streamline in the acceleration separation zone, referred to as the acceleration streamline, and the rear section is the streamline in the deceleration separation zone, referred to as the deceleration streamline; 81: Projection point B of the 2π–α edge of the inner spiral wall; 82: 0-corner point F of the isobaric line at point J, entrance point F of the eddy zone of the isobaric line at point J, and endpoint F of the arc FF'; 83: Projection point C' of the outer edge of the outer spiral wall; 84: Projection point C of the outer edge of the inner spiral wall; 85: 0-corner point G on the acceleration streamline; 86: Projection point B' of the 2π edge of the inner spiral wall; 87: Point Q on streamline C56; 88: Projection point D of the inner edge of the outer spiral wall; 89: Projection point D' of the inner edge of the inner spiral wall; 90: Point Q" on streamline B56; 94: Center of the curvature circle I' of point J" of the outer spiral wall; 95: isobaric point T”, point Q’ is the rotationally symmetrical point T” on the inner screw wall; 96: isobaric point Q’; 97: isobaric point J’; 98: isobaric line FF’; 99: isobaric line GG’; 100: tangent line of isobaric line at point Q”; 101: upper partition; 102: lower partition; 103: vertical plate of groove partition; 104: BB section line; 105: CC section line; 106: DD section line; 107: point Q on the acceleration streamline 1 ; 108: Point Q on the isobaric surface 2 ; 109: Point Q on the isobaric surface 4 ; 110: Point Q on the acceleration streamline 5 ; 111: Point Q on the acceleration streamline 3 ; 112: isobaric surface contact point G 2 , click Q 2 The rotational symmetric point G on the inner screw wall 2 ; 113: isobaric surface contact point G 3 , click Q 3 The rotational symmetric point G on the inner screw wall 3 ;114:Q 1 Point P θ , line segment Q 1 O; 115: Q 3 116: the isobaric surface at the departure of the droplet; 117: the isobaric surface at the end of the interception acceleration separation zone; 118: Q 3 Point curvature radius Q 3 I2 ;119:Q 3 Point logarithmic spiral motion centripetal force; 120: Q 1 Point logarithmic spiral motion resultant force; 121: Q 1 Point logarithmic spiral motion centripetal force; 122: Q 2 Point circular motion centripetal force; 123: Q 2 Point circular motion resultant force; 124: Q 3 Point Pole Diameter Q 3 O; 125: spiral shell interception line; 127: the second single-arm vortex in the acceleration separation zone; 128: the second single-arm vortex in the eddy flow zone; 129: the height of the spiral shell H; 130: the height of the partition h; 131: the distance between the spiral unit layers 2h; 132: the connection position of the spiral units in adjacent layers; 135: Q 3 The resultant force of the logarithmic spiral motion at the point; 156: logarithmic spiral streamline B56 in the vortex zone; 162: the remaining convex arc wall of the intersecting spiral shell; 163: point Q on the acceleration streamline 3 The center of the circle of curvature I 2 ; 164: isobaric line wall point T', point Q and point Q" are rotationally symmetrical points T' on the inner screw wall; 165: acceleration streamline Q 1 The curvature radius R of the point θ , line segment Q 1 I 1 ; 167: Q point isobaric line, on the same line as Q” point isobaric line; 168: Q 3 Tangential force of point logarithmic spiral motion, linear velocity direction of logarithmic spiral motion; 200: Q 1 Point isobaric surface tangent; 201: inner end convex arc wall edge; 232: eddy zone streamline inclination angle A; 256: eddy zone logarithmic spiral streamline C56; 263: streamline B56 Q "point curvature circle center I; 264: acceleration streamline J point on the inner spiral wall of the rotational symmetry point F', J point isobaric line wall point F', arc FF' end point F'; 266: Q 3 Point curvature radius and polar angle A; 300: Q 2 Tangential force of point circular motion; 332: Q 3 The inclination angle A of the tangential force of the logarithmic spiral motion, the inclination angle A of the linear velocity of the logarithmic spiral motion; 381: the horizontal projection line of the outer wall of the spiral shell from 0 to 2π; 382: the horizontal projection line of the outer wall of the spiral shell from 2π to φ; 432: Q 1The inclination angle A of the tangential force of the logarithmic spiral motion and the inclination angle A of the linear velocity of the logarithmic spiral motion; 433: the projection point B" of the 2π edge line of the outer spiral wall; 441: the straight edge of the spiral bottom or spiral cover; 442: the edge line of the width of the spiral unit entrance; 443: the horizontal projection line of the edge line of the width of the spiral unit entrance; 481: the projection line of the flow section at the end of the acceleration separation zone; 501: the first acceleration separation zone; 502: the second acceleration separation zone; 511: the first deceleration separation Zone; 512: 2nd deceleration separation zone; 533: Projection point E of the φ–2π edge line of the inner spiral wall at the end of the acceleration separation zone; 566: Streamline of the deceleration separation zone; 801: Projection point T of the 4π–α edge line of the inner spiral wall; 1001: Horizontal projection of the spiral unit structure; 1010: 1st single-arm vortex of the spiral shell; 1011: Vertical plate of the upper partition of the angular cover; 1012: Horizontal plate of the upper partition of the angular cover; 1013: Extension plate of the vertical plate of the angular partition; 1 014: 5-shaped cover partition or bottom partition; 1021: vertical plate of angle bottom partition; 1022: horizontal plate of angle bottom partition; 1301: overlapping area of ​​intersecting spiral units; 1302: angle λ of horizontal parallel connection of spiral units; 1303: axial section of spiral unit; 1305: foot of perpendicular from arc center to coplane S; 1501: arc center of arc parallel connection or circle center of circular parallel connection; 1502: arc circumference of arc parallel connection; 1503: axial section of arc parallel connection; 1504: axial section of arc parallel connection; 1505: axial section of arc parallel connection; 1506: axial section of arc parallel connection; 1507: axial section of arc parallel connection; 1508: axial section of arc parallel connection; 1509: axial section of arc parallel connection; 1510: axial section of arc parallel connection; 1511: axial section of arc parallel connection; 1512: axial section of arc parallel connection; 1513: axial section of arc parallel connection; 1514: axial section of arc parallel connection; 1515: axial section of arc parallel connection; 1516: axial section of arc parallel connection; 1517: axial section of arc parallel connection; 1518: axial section of arc parallel connection; 1519: axial section of arc parallel connection; 1520: axial section of arc parallel connection; 1521: axial section of arc parallel connection; 1522: axial section of arc parallel connection; 1523: axial section of arc parallel connection; 1524: axial section of arc parallel connection; 1525: axial section of arc parallel connection; 1526: axial section of arc parallel connection; 1527: axial section of arc parallel connection; 1528: axial section of arc parallel connection; 1529: axial 03: The radius from the arc-shaped parallel spiral axis to the arc center or the radius from the circular parallel spiral axis to the circle center; 1504: The spacing plate; 1505: The parallel center angle of the adjacent arc-shaped parallel or circular parallel spiral axis; 2001: The interlayer frame; 1701: The intercolumn frame; 2301: The annular fixed frame at the top of the cylinder; 2302: The bottom of the cylinder; 2303: The circular air outlet of the annular fixed frame; 2304: The TT section line; 2305: Fig.31 The local enlarged position H'-H'; 2401: logarithmic spiral arc; 2402: logarithmic spiral; 2403: the same arc of the same arc circumferential angle, ∠XO'Y and ∠XOY are the circumferential angles of the same arc; 2404: the first equiangular circular arc; ∠XO'Y: the center angle σ of the first equiangular circular arc 2404, the circumferential angle on arc 2403; ∠XOY: the first equal-division polar angle σ of the logarithmic spiral 2402, the circumferential angle on arc 2403; ∠YO"X': the center angle of the second equiangular circular arc σ; ∠YOX': the second equally divided polar angle σ of the logarithmic spiral 2402, ∠YO"X' and ∠YOX' are the circumferential angles of the same arc; 1A: the layer sequence number of the spiral unit, layers from the top, columns from the left, 1st layer, A column; 1B: 1st layer, B column; 1C: 1st layer, C column; 2A: 2nd layer, A column; 2B: 2nd layer, B column; 2C: 2nd layer, C column; 2D: 2nd layer, D column; 3A: 3rd layer, A column; 3B: 3rd layer, B column; 3C: 3rd layer, C column.

[0089] Embodiment 1: A demisting and dehumidifying device for removing mist droplets with a radius of 10 microns, as shown in the attached Figure 1 To Attachment Figure 7 The demisting and dehumidifying device is a spiral unit, and the total polar angle of the spiral shell is φ = 4.5π, r 雾 = The centripetal force equilibrium curvature radius R of a 10-micron droplet 平衡 =(16 / 3)r 雾 ρ 雾 / ρ 空气 =41.25 mm, the inner screw wall inclination angle A=π / 30, the geometric relationship between the inclination angle A and the total polar angle φ –2πtan(π / 30) +e –4.5πtan(π / 30) =0.74295<1, the inner screw wall π / 2 edge line polar diameter is 41.25 mm, the inner screw wall outer end polar diameter P 0 =P θ e θtan(A) =P π / 2 e (π / 2)tan(π / 30) =41.25×1.18=48.68 mm, the inner end diameter of the inner screw wall is the eye radius P φ =P 0 e –φtan(A) =48.68×e –4.5πtan(π / 30) =48.68×0.23=11.20 mm, the outer end thickness of the spiral shell is L' 0 = P' 0 –P 0 =P 0 (e αtan(A) –1), let L' 0 =5 mm, e αtan(A) –1=5 / 48.68=0.1027, the angle between the outer spiral wall and the inner spiral wall is α=In(L' 0 / P 0 +1) / tan(A)=In(5 / 48.68+1) / tan(π / 30) =0.9303≌53.3°, φ=4.5π=14.137, 4π–α=11.636, 14.137≥11.636 meets φ≥4π–α, the inner end thickness of the spiral shell is L' φ =P' φ –P φ =P φ (e αtan(A) –1)=11.20×0.1027=1.15 mm, the outer end diameter of the outer screw wall is P' 0 =P 0 e αtan(A) =48.68×1.1027=53.68 mm, the inner end diameter of the outer screw wall is P' φ =P' 0 e –φtan(A) =P' 0 e –4.5πtan(π / 30)= 53.68×0.23=12.35 mm, spiral unit entrance width L 0 =P 0 –P’ 2π =P 0 (1–e (α–2π)tan(A) ) =48.68×(1–e (0.9303–2π)tan(π / 30) ) = 20.95 mm, L 0 >P φ , spiral shell height H ≥ 2πP φ 2 / L 0 , 2πP φ 2 / L 0 =2π×11.20 2 / 20.95=37.62 mm, the height of the spiral shell H is 38 mm, the end section of the acceleration separation zone is φ–2π=2.5π, the axial section of the 2.5π edge of the inner spiral wall is the end section of the acceleration separation zone, and the polar diameter of the 2.5π edge of the inner spiral wall is P 2.5π =P 0 e –2.5πtan(π / 30) =48.68×0.428=21.32 mm, the radius of the off-site isobaric surface at the end of the accelerated separation zone is the inner spiral wall edge line diameter, the radius of the off-line isobaric surface at the end of the accelerated separation zone = 21.32 / cos(π / 30) = 21.44 mm, the radius of the droplets that can be removed at the end of the accelerated separation zone r 雾 =(3 / 16) R 平衡 ρ 空气 / ρ 雾 =(3 / 16) P 2.5π ρ 空气 / ρ 雾 =(3 / 16) ×21.32×1.293 / 1000=0.00517 mm=5.17 μm. When the droplets with a radius of 5.17 μm move to the offline isobaric surface with a radius of 21.44 mm, they are separated from the airflow and land on the inner spiral wall at the end of the acceleration separation zone. This device can remove droplets with a radius greater than 5.17 μm. After the airflow runs smoothly, the droplets with a radius of 10 μm carried by it land on the wall near the π / 2 edge of the inner spiral wall. The polar diameter of the π / 2 edge of the inner spiral wall is the radius of the departure isobaric surface of the droplets with a radius of 10 μm. The centripetal force equilibrium curvature radius of the droplets with a radius of 10 μm is equal to the polar diameter R of the π / 2 edge of the inner spiral wall. 平衡 =P π / 2 =41.25 mm, inner screw wall π / 2 edge curvature 1 / R π / 2 =1 / [cos(A)×P π / 2 ]=1 / [cos(π / 30)×0.04125]=24.376, the centripetal equilibrium curvature of the droplet is 1 / R 平衡=1 / 0.04125=24.242, 1 / R π / 2 : 1 / R 平衡 =1 / [cos(π / 30)×0.04125]: [1 / 0.04125]=1 / cos(π / 30) The curvature of the inner spiral wall π / 2 edge is 1 / cos(π / 30) of the centripetal force equilibrium curvature of the droplet. The radius of the offline isobaric surface of a droplet with a radius of 10 microns = 41.25 / cos(π / 30)=41.48mm. The radius of the offline isobaric surface is smaller than the outer end of the inner spiral wall, indicating that the droplets can enter the spiral shell for separation. The inner spiral wall π / 2 edge line has a rotation angle of 2π from the end of the accelerated separation zone. The curvature from the inner spiral wall π / 2 edge line to the end of the accelerated separation zone is greater than the curvature of the inner spiral wall π / 2 edge line. It is consistent with the curvature of at least one point on the logarithmic spiral of the inner spiral wall in the accelerated separation zone being greater than 1 / cos(A) of the centripetal force equilibrium curvature of the droplets. Therefore, the removal effect of droplets with a radius of 10 microns can be guaranteed, including the removal of droplets with a radius greater than 10 microns. The flow area is the sum of the areas of the two spiral eyes 2πP φ 2 =2π×11.20 2 =788.16 square millimeters; Assume that the atmospheric pressure at room temperature C = 101325 Pa, and the room temperature t 0 =25℃, spiral unit inlet wind speed v 0 =3m / s, then the atmospheric pressure at 0℃ is p 0 =92824.59 Pa, velocity v at the end of the acceleration separation zone θ+ε =v θ e εtan(A) ,θ=0,ε=2.5π,e εtan(A) =e 2.5πtan(π / 30) =2.283, v 末 =6.85m / s, calculated temperature difference t between the spiral shell inlet and the end of the acceleration separation zone 0 –t 末 =(273 / 2)ρ 空气 (e 2εtan(A) –1) v 0 2 / p 0 =(273 / 2)×1.293×(e 2×2.5πtan(π / 30) –1)× 3 2 / 92824.59=0.07209℃, t 末 =24.92791℃. The actual temperature difference during use is affected by the airflow velocity, airflow moisture content, airflow dynamic pressure difference, airflow temperature, ambient temperature, etc., and the comprehensive temperature difference needs to be actually measured. The device of this embodiment can be provided with a fixed frame at the entrance.

[0090] Example 2: A multi-layer parallel demisting and dehumidifying device with a bottom and no cover, with an angled baffle plate and an external air inlet, for removing droplets with a radius greater than 1 micron. The accumulated water in the cylinder is discharged in the reverse direction from the vortex area of ​​each spiral unit at the bottom of the cylinder, as shown in the attached Fig.29 To Attachment Fig.33 The device of this embodiment includes an annular fixed frame at the top of the cylinder, a cylinder, and a cylinder bottom, wherein a circular air outlet is opened in the center of the annular fixed frame, wherein the cylinder includes 8 layers of external air inlet circular parallel, each layer of external air inlet circular parallel includes 30 spiral units tangentially connected in parallel, and the parallel angle λ=168°, the upper baffle of the uppermost spiral unit of the cylinder is an angular concave arc upper baffle, and the adjacent angular concave arc upper baffles are horizontally connected to form an annular whole, and the annular fixed frame and the uppermost cover baffle are connected to form an annular whole concentric with the annular The bottom baffle of the lowest spiral unit of the cylinder is an angular concave arc bottom baffle, and the adjacent angular concave arc bottom baffles are horizontally connected to form an annular whole. The bottom of the cylinder and the lowest bottom baffle are connected to form an annular whole with the same radius and concentricity and connected to the bottom of the annular whole. The middle layer of the cylinder is a groove baffle connected by an angular baffle, and the groove baffles are horizontally connected to form an annular whole. The spiral units of each layer are mutually projected, the horizontal plates of each layer of baffles are mutually projected, and the vertical plates of each layer of baffles are mutually projected. The total polar angle of the spiral shell is φ=4π, r 雾 = The centripetal force equilibrium curvature radius R of a 1-micron droplet 平衡 =(16 / 3)r 雾 ρ 雾 / ρ 空气 =4.125 mm, the radius is greater than 1 micron droplet, the centripetal force equilibrium curvature radius is greater than 4.125 mm, the inner spiral wall inclination angle A = 0.1152 ≌ 6.6 °, the geometric relationship between the inclination angle A and the total polar angle φ is e –2πtan(0.1152) +e –4πtan(0.1152) =0.7169<1, the outer end diameter of the inner screw wall is P 0 =8.54 mm, the inner end diameter of the inner screw wall is the eye radius P φ =P 0 e –φtan(A) =8.54×e –4πtan(0.1152) =8.54×0.234=1.998 mm, the outer end thickness of the spiral shell is L' 0 = P' 0 –P 0 =P 0 (e αtan(A) –1), let L' 0 = 1.7 mm, e αtan(A) –1=1.7 / 8.54=0.199, the angle between the outer spiral wall and the inner spiral wall is α=In(L' 0 / P 0+1) / tan(A)=In(1.7 / 8.54+1) / tan(0.1152)=1.568≌89.87°,φ=4π=12.566,4π–α=10.998,12.566≥10.998 satisfiesφ≥4π–α,the inner end thickness of the spiral shell is L' φ =P' φ –P φ =P φ (e αtan(A) –1)=2×0.199=0.398 mm, the outer end diameter of the outer screw wall is P' 0 =P 0 e αtan(A) =8.54×1.199=10.239 mm, the inner end diameter of the outer screw wall is P' φ =P' 0 e –φtan(A) =10.239×e –4πtan(0.1152) =10.239×0.234=2.396 mm, spiral unit entrance width L 0 =P 0 –P’ 2π =P 0 (1–e (α–2π)tan(A) )=8.56×(1–e (1.568–2π)tan(0.1152) )=8.56×0.4205=3.599 mm, L 0 >P φ , spiral shell height H ≥ 2πP φ 2 / L 0 , 2πP φ 2 / L 0 =2π×1.998 2 / 3.599=6.969 mm, the spiral shell height H is 10 mm, the vertical plate height of the angle partition h ≥ π 1 / 2 P φ =π 1 / 2 ×1.998=3.541 mm, the height h of the vertical plate of the angle partition is 4 mm, the horizontal projection line of the vertical plate of the spiral unit angle partition is a concave arc tangent to the lower curve of the 5-shaped line and the concave arcs of each unit are connected to form a circle, the thickness of the vertical plate of the angle partition is taken to the left of the 5-shaped line, the height 2h of the vertical plate of the grooved partition is 8 mm, the end section of the acceleration separation zone is φ–2π=2π angle, the axial section of the 2π edge line of the inner spiral wall is the end section of the acceleration separation zone, and the axial section width L of the 2π edge line of the inner spiral wall φ–2π =P φ–2π –P’ φ =P 0 e –φtan(A) (e 2πtan(A) –e αtan(A))=8.54×e –4πtan(0.1152) ×(e 2πtan(0.1152) –e 1.568tan(0.1152) ) = 1.736 mm. Because the bottom screw eye is pushed by wind pressure to discharge the water at the bottom of the screw roll immediately, the water film at the end section of the accelerated separation zone is thinner and will not be blocked. The 2π edge line polar diameter P of the inner screw wall at the end of the accelerated separation zone 2π =P 0 e –2πtan(0.1152) = 8.54×0.483=4.125 mm, the centripetal force equilibrium curvature radius R of a droplet with a radius of 1 micron 平衡 =P 2π =4.125 mm. This device can just remove the droplets with a radius larger than 1 micron. After the airflow runs smoothly, the droplets with a radius of 1 micron carried by it will land on the wall near the 2π edge of the inner spiral wall of the spiral unit. The droplets with a radius larger than 1 micron will land on the wall before the 2π edge of the inner spiral wall. The logarithmic spiral curvature 1 / R 2π =1 / [cos(A)×P 2π ]=1 / [cos(0.1152)×0.004125]=244.04, the centripetal equilibrium curvature of a droplet with a radius of 1 micron is 1 / R 平衡 =1 / 0.004125=242.42, 1 / R 2π : 1 / R 平衡 =1 / [cos(0.1152)×0.004125]: [1 / 0.004125]=1 / cos(0.1152) The curvature of the logarithmic spiral at the π / 2 edge of the inner spiral wall is 1 / cos(0.1152) of the centripetal force equilibrium curvature of the droplet with a radius of 1 micron. Therefore, the curvature of the logarithmic spiral at the 2π edge of the inner spiral wall is greater than the centripetal force equilibrium curvature of the droplet with a radius greater than 1 micron, which is 1 / cos(0.1152). This is consistent with the fact that at least one point on the logarithmic spiral of the spiral wall in the acceleration separation zone has a curvature greater than 1 / cos(A) of the centripetal force equilibrium curvature of the droplet. The flow area of ​​the spiral unit is the sum of the areas of the two spiral eyes, 2πP φ 2 =2π×1.998 2 =25.08 square millimeters, the total flow area of ​​240 parallel spiral units = 240 × 25.08 = 6019.80 square millimeters, the flow area of ​​the circular air outlet with an annular fixed frame is not less than the total flow area of ​​the parallel spiral units, and the radius of the circular air outlet with an annular fixed frame is ≥ (6019.80 / π) 1 / 2=43.77 mm, the radius of the annular fixed frame air outlet is 50 mm; the parallel angle λ=168°=168π / 180=2.932, the parallel center angle of adjacent spiral mandrels in circular parallel connection is π–λ, the ratio of half the distance between two adjacent spiral mandrels to the radius of the spiral mandrel to the center of the circular parallel connection is sin[(π–λ) / 2], the radius of the spiral mandrel to the center of the circular parallel connection is =(P' 0 + P' π ) / 2 / sin[(π–λ) / 2]=(P' 0 + P' π ) / [2cos(λ / 2)]=10.239(1+e –πtan(0.1152) ) / [2cos(2.932 / 2)]=82.97 mm;

[0091] Assume that the atmospheric pressure at room temperature is C = 101325 Pa, and the room temperature is t 0 =25℃, spiral unit inlet wind speed v 0 =3m / s, then the atmospheric pressure at 0℃ is p 0 =92824.59 Pa, velocity v at the end of the acceleration separation zone θ+ε =v θ e εtan(A) ,θ=0,ε=2π,e εtan(A) =e 2πtan(0.1152) =2.069, v 末 =6.21m / s, the calculated temperature difference between the spiral shell inlet and the end of the acceleration separation zone t 0 –t 末 =(273 / 2)ρ 空气 (e 2εtan(A) –1) v 0 2 / p 0 =(273 / 2)×1.293×(e 2×2πtan(0.1152) –1)× 3 2 / 92824.59=0.05614℃, t 末 =24.94386℃. The actual temperature difference during use is affected by the airflow velocity, airflow moisture content, airflow dynamic pressure difference, airflow temperature, ambient temperature, etc., so the comprehensive temperature difference needs to be measured.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spiral demisting and dehumidifying device, characterized in that: It comprises at least one spiral unit, each spiral unit is composed of a spiral shell (1), a spiral cover (2), and a spiral bottom (3); The spiral shell is a single-arm vortex body of equal height that is horizontally rotated and curled inward around a spiral core axis (10). The single-arm vortex body is surrounded by an inner spiral wall (11), an outer spiral wall (12), an outer end convex arc wall (16), and an inner end convex arc wall (20). The wall surface of the single-arm vortex body facing the spiral core axis is the inner spiral wall, and the wall surface facing away from the spiral core axis is the outer spiral wall. The direction in which the curvature of the inner spiral wall increases is the positive rotation direction. The outer end of the single-arm vortex body is tangent to the inner spiral wall by the outer end convex arc wall and intersects with the outer spiral wall. The inner end of the single-arm vortex body is tangent to the inner spiral wall by the inner end convex arc wall. The arc wall is tangent to the outer spiral wall and intersects the inner spiral wall. The horizontal projection curve of the outer spiral wall and the horizontal projection curve of the inner spiral wall include two logarithmic spirals with the same rotation direction. The outer spiral wall logarithmic spiral (38) and the inner spiral wall logarithmic spiral (35) have the same pole, the same total polar angle φ, and the same inclination angle A (32). The inclination rates of the two logarithmic spirals are both –tan(A). The horizontal angle between the two logarithmic spirals is α (33), 0<α<2π, and the similarity ratio between the outer spiral wall logarithmic spiral and the inner spiral wall logarithmic spiral is e αtan(A) The thickness of the single-arm vortex is its axial cross-sectional width. The point on the spiral axis is the spiral center (8). The pole of the logarithmic spiral is the spiral center. The total polar angle of the single-arm vortex is φ, φ≥4π–α. The geometric relationship between the minimum value of the inclination angle A and the total polar angle φ is 1>e –2πtan(A) +e –φtan(A) , the maximum value of the inclination angle A is less than π / 4, the outer edge of the outer spiral wall is parallel to the spiral axis, the outer edge of the outer spiral wall is the intersection line of the outer spiral wall and the outer convex arc wall, the distance from the outer edge of the outer spiral wall to the spiral axis is the outer polar diameter of the outer spiral wall P'0(21), the polar angle of P'0 is 0, the inner edge of the outer spiral wall is parallel to the spiral axis, the inner edge of the outer spiral wall is the tangent line of the outer spiral wall and the inner convex arc wall, the distance from the inner edge of the outer spiral wall to the spiral axis is the inner polar diameter of the outer spiral wall P' φ (39), P' φ The polar angle of P0 is φ, the circle with the spiral center as the center and the outer end polar diameter of the outer spiral wall as the radius is the outer end circle of the spiral shell (22), the outer end edge line of the inner spiral wall is parallel to the spiral center axis, the outer end edge line of the inner spiral wall is the tangent line between the inner spiral wall and the outer end convex arc wall, and the distance from the outer end edge line of the inner spiral wall to the spiral center axis is the inner end polar diameter P0 (37), the polar angle of P0 is 0, the inner end edge line of the inner spiral wall is parallel to the spiral center axis, the inner end edge line of the inner spiral wall is the intersection line between the inner spiral wall and the inner end convex arc wall, and the distance from the inner end edge line of the inner spiral wall to the spiral center axis is the inner end polar diameter P φ (7), P φ The polar angle is φ, the circle with the spiral center as the center and the inner end polar diameter of the inner spiral wall as the radius is the spiral eye circle (6), the spiral eye circle and the outer end circle of the spiral shell are concentric circles, the single-arm vortex body horizontally rotates and curls from the outer end circle of the spiral shell to the spiral eye circle, the axial section formed between the outer end edge line of the inner spiral wall and the 2π edge line (43) of the outer spiral wall is the spiral unit entrance (44), the spiral cover is the cover of the upper horizontal plane of the single-arm vortex body, the spiral cover has a circular hole as the cover spiral eye (4), the cover spiral eye circle is the projection of the spiral eye circle on the spiral cover, the spiral bottom is the bottom of the lower horizontal plane of the single-arm vortex body, the spiral bottom has a circular hole as the bottom spiral eye (5), the bottom spiral eye circle is the projection of the spiral eye circle on the spiral bottom, the cylindrical space between the cover spiral eye and the bottom spiral eye is the spiral eye area (9), the cover spiral eye and the bottom spiral eye are the exits of the spiral unit, the spiral cover and the spiral bottom are horizontal projections of each other, and the spiral The horizontal projection outer contour line (47) of the cover or the spiral bottom is connected by the horizontal projection line of the outer end convex arc wall, the horizontal projection line of the outer spiral wall rotating from 0 to 2π and the horizontal projection line of the spiral unit entrance width edge line (442); the spiral shell, the spiral cover and the spiral bottom form a spiral unit; the space formed by the spiral unit from the entrance to the spiral eye area is a vortex zone (48); the space formed by the spiral wall surfaces on both sides of the vortex zone is an acceleration separation zone (50); the spiral wall surfaces on both sides of the acceleration separation zone are similar and have the same inclination angle; the tangential flow section width of the acceleration separation zone is the polar diameter difference of the spiral wall edges on both sides on the axial section of the acceleration separation zone; the space formed by the spiral wall surface on one side of the vortex zone is a deceleration separation zone (51); and the curvature of at least one point on the spiral wall logarithmic spiral line in the acceleration separation zone is greater than 1 / cos(A) of the centripetal force equilibrium curvature of the droplet; The height of the single-arm vortex of equal height is greater than or equal to 2πe of the radius of the eye circle –φtan(A) / (1–e (α–2π)tan(A) ) times, that is, H ≥ 2πP φ e –φtan(A) / (1–e (α–2π)tan(A) ), H is the height of the spiral shell; The droplets of different radii in the acceleration and separation zone continuously pass through the offline isobaric surface that is in tilt balance with their centripetal force and the departure isobaric surface that is in vertical balance with their centripetal force. The curvature of at least one point on the logarithmic spiral of the spiral wall in the acceleration and separation zone is greater than 1 / cos(A) of the maximum value of the centripetal force balance curvature of the droplets of different radii. The spiral unit is connected with the external airflow by directly connecting with the external airflow through the inlet and the outlet or by arranging a cover baffle (101) and a bottom baffle (102) in the peripheral space between the inlet and the outlet on the shell of the spiral unit to connect with the external airflow. The airflow carries the mist droplets and enters the spiral unit obliquely from the inlet and moves horizontally along the vortex zone around the spiral axis to form a vortex flow field. The flow cross section in the vortex flow field decreases and the flow velocity increases. The flow velocity increases and the pressure decreases. The pressure decreases and the temperature decreases. The airflow carrying the mist droplets in the accelerated separation zone moves with an inclination rate of - The logarithmic spiral streamlines of tan(A) are similar and clustered. The points with the same curvature on the logarithmic spiral streamline clusters form arc-shaped isobaric surfaces. The arc-shaped isobaric surfaces along the contraction direction of the streamline clusters are coaxial and have increasing curvatures. The curvature of the arc-shaped isobaric surface is cos(A) times the curvature of the logarithmic spiral streamlines it passes through. The pressure decreases as the curvature of the arc-shaped isobaric surface increases. The arc-shaped isobaric surface that balances the centripetal force of the droplets includes the departure isobaric surface whose curvature is equal to the centripetal force balance curvature of the droplets and the arc-shaped isobaric surface whose curvature is cos( A) times the offline isobaric surface, the pressure of the offline isobaric surface is greater than the pressure of the departure isobaric surface. When the droplets first pass through the offline isobaric surface obliquely, the centripetal force balance curvature is the same as the curvature of the airflow streamline and the centripetal force is balanced. After the centripetal force is balanced, the droplets separate from the airflow streamline along the tangent direction of the airflow streamline. The separated droplets enter the departure isobaric surface tangentially and move in a circle along the departure isobaric surface until they hit the inner spiral wall and leave the flow field. When droplets of different radii continuously pass through the offline isobaric surface with its centripetal force tilt balance and the departure isobaric surface with its centripetal force vertical balance, the droplets move in a circle until they hit the inner spiral wall and leave the flow field. The dynamic state changes from vortex motion with an inclination angle to circular motion without an inclination angle and then hits the inner screw wall to achieve demisting. During the demisting process, the pressure decreases and the temperature drops, causing water vapor to condense into droplets and the humidity to decrease. After the water vapor condenses, it is removed along with the droplets to achieve dehumidification. The airflow after demisting and dehumidification continues to vortex along the vortex area, rotates through the deceleration separation area and the screw eye area, and is discharged from the cover screw eye and the bottom screw eye. The droplets hitting the wall gather into a liquid film, which flows along the wall to the bottom of the spiral under the action of gravity. The airflow pushes the liquid film on the bottom of the spiral to be discharged from the spiral unit through the bottom screw eye.

2. A spiral demisting and dehumidifying device according to claim 1, characterized in that: It comprises a plurality of spiral units which are connected in parallel as a whole.

3. The spiral demisting and dehumidifying device according to claim 1, characterized in that: The width of the spiral unit entrance is greater than or equal to the radius of the spiral eye circle.

4. The spiral demisting and dehumidifying device according to claim 1, characterized in that: The outer space between the inlet and the outlet of the spiral unit shell is provided with a cover partition and a bottom partition to communicate with the external airflow. The cover partition and the bottom partition include a 5-shaped partition and an angle partition, wherein the angle partition is connected by a vertical plate and a horizontal plate to form a right-angle L shape, and the lower side of the vertical plate of the angle bottom partition of the same height and the upper side of the vertical plate of the angle cover partition are connected to form a groove-shaped partition.

5. The spiral demisting and dehumidifying device according to claim 2, characterized in that: The multiple spiral units are connected in parallel as a whole, and the parallel connection forms of the multiple spiral units include: single-layer parallel connection, multi-layer parallel connection, in-line parallel connection, and multi-row parallel connection.

6. A spiral demisting and dehumidifying device according to claim 5, characterized in that: The single-layer parallel connection forms include: straight parallel connection, concave arc parallel connection, convex arc parallel connection, external air inlet circular parallel connection, and internal air inlet circular parallel connection.

7. The spiral demisting and dehumidifying device according to claim 5, characterized in that: The multi-layer parallel connection forms include: flat surface multi-layer parallel connection, concave arc surface multi-layer parallel connection, convex arc surface multi-layer parallel connection, external air inlet cylindrical multi-layer parallel connection, and internal air inlet cylindrical multi-layer parallel connection.

8. The spiral demisting and dehumidifying device according to claim 5, characterized in that: The multi-column parallel connection forms include: multi-column parallel connection of flat surfaces, multi-column parallel connection of concave arc surfaces, multi-column parallel connection of convex arc surfaces, multi-column parallel connection of external air inlet cylindrical shapes, and multi-column parallel connection of internal air inlet cylindrical shapes.

9. The spiral demisting and dehumidifying device according to claim 2, characterized in that: The plurality of spiral units are connected in parallel as a whole, wherein the connection modes of horizontally adjacent spiral units include: tangential connection, intersecting connection, and spaced connection.

10. The spiral demisting and dehumidifying device according to claim 1, characterized in that: The acceleration separation zone also includes at least one built-in single-arm vortex body with the same inclination angle as the inner spiral wall thereof, and the built-in single-arm vortex body divides the acceleration separation zone into a plurality of sub-acceleration separation zones.

11. The spiral demisting and dehumidifying device according to claim 1, characterized in that: The eddy current zone also includes at least one built-in full-length single-arm vortex body with the same inclination angle as the inner spiral wall thereof, and the built-in full-length single-arm vortex body divides the eddy current zone into a plurality of sub-eddy current zones.

12. The spiral demisting and dehumidifying device according to claim 1, characterized in that: The horizontal projection curve of the outer spiral wall of the single-arm vortex body and the horizontal projection curve of the inner spiral wall also include two similar logarithmic spiral arcs.

13. The spiral demisting and dehumidifying device according to claim 1, characterized in that: The horizontal projection curve of the outer spiral wall of the single-arm vortex body and the horizontal projection curve of the inner spiral wall also include a logarithmic spiral and a curve equidistant from the logarithmic spiral.

14. The spiral demisting and dehumidifying device according to claim 1, characterized in that: The horizontal projection curve of the outer spiral wall of the single-arm vortex body and the horizontal projection curve of the inner spiral wall also include a logarithmic spiral arc and a curve equidistant from the logarithmic spiral arc.

15. The spiral demisting and dehumidifying device according to claim 1, characterized in that: The upper and lower partitions include a 5-shaped partition, an angled partition, and a grooved partition. The height of the vertical plates of the 5-shaped partition and the angled partition is greater than or equal to π of the radius of the screw eye circle. 1 / 2 times, h is the height of the vertical plate of the 5-shaped partition and the angle partition, h≥π 1 / 2 P φ , the vertical plate height of the trough partition is 2h.

Images